Pay attention to the suitability of choosing ppe

For the fall, it seems to show a bit of bleak charm everywhere, whether it is falling leaves after rain or endless rainy days, people always feel a little repressed, and occasionally a careless spring injury It's So in the fall and winter seasons, choose clothes is also exquisite, of course, the choice of clothes color can not be on the matter of course.

So autumn should choose what kind of clothes, now Xiaobian take you to the pop buyers to stroll it!

Simple warm orange is of course the representative of the warm color friends, for the dark complexion partners, but also very significant color Oh. Simple style full of leisure, the white stripes at the sleeves at the more embellished the whole point of a little fresh feeling. Waist bow factor, but also added a bit sweet and playful feel. A simple casual dress, enough to highlight all the playful sweetness.

Refreshing white shirt, coupled with V-collar factors, but also increased a little bit ***y. Long sleeve design is also very suitable for now comfortable and cool weather. Sleeve at the small print design also highlights the somewhat small sense of freshness. Bottom with a dark blue half-length denim s******t, the front zipper style design full of fashion sense. The whole small fresh and full of fashion sense. Like it, may wish to shop Oh!

Sponge Breaking Machine

Sponge Breaking Machine,Sponge Mixing Machine,Foam Cutting  Machine

Flow Wrapping Machine,Noodle Packing Machine Co., Ltd. , http://www.flow-wrappingmachine.com

Sissi is a global functional underwear brand from France, the product form is unique, with the world's first perfect thin body underwear as a fist product, the concept of functional body shape into the field of underwear, the lingerie raised to a professional modeling measurements measurements to build the perfect Body's secret weapon, with body shaping series of auxiliary stereotypes, to achieve the perfect measurements results.

Sisi Princess Health Series underwear not only from the material to choose the best fabric, breathable full; from the design, it is to comply with the European-style ***y underwear more ***y, built-in rim inside the innovation to minimize the harm to the female body, Create the perfect body shape.

Quilting machine

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First of all, we must analyze the factors affecting the efficiency of the centrifugal pump, and put forward improvement measures to improve the efficiency of the centrifugal pump and reduce the energy consumption of the equipment.

First, several factors that affect the efficiency of centrifugal pump group

Centrifugal pump efficiency is the product of mechanical, volume, and hydrodynamic efficiency. The efficiency of the pump set is the product of pump efficiency and motor efficiency. The main reasons for the low efficiency of the centrifugal pump group are as follows:

1. The efficiency of the pump itself is the most fundamental effect. For pumps under the same operating conditions, the efficiency may differ by more than 15%.

2. The operating conditions of the centrifugal pump are lower than the rated operating conditions of the pump. The pump efficiency is low and the energy consumption is high.

3. The motor efficiency remains basically unchanged during use. Therefore, it is important to choose a high-efficiency motor.

4. The influence of mechanical efficiency is mainly related to design and manufacturing quality. After the pump is selected, the impact of later management is less.

5. Hydraulic losses include hydraulic friction and local resistance loss. After the pump has been running for a certain period of time, it will inevitably cause the surfaces of the impeller and guide vanes to wear out, the hydraulic loss will increase, and the hydraulic efficiency will decrease.

6. The volume loss of the pump, also known as the leakage loss, includes three kinds of leakage losses: the impeller seal ring, the interstage, and the axial force balance mechanism. The volumetric efficiency is not only related to design and manufacturing, but also related to later management. After a certain period of continuous operation of the pump, due to friction between the components, the gap increases and the volumetric efficiency decreases.

7. Due to blockage of the filter cylinder, intake of the pipeline, etc., the centrifugal pump was pumped out and idling.

8. Before starting the pump, employees did not pay attention to the preparatory work before the start of the centrifugal pump, and the basic operating procedures such as the warm pump, disc pump, and infusion pump were not thoroughly performed, which often caused cavitation of the pump, causing large pump noise, large vibration, and low pump efficiency.

Second, reduce the centrifugal pump energy consumption, improve the efficiency of the pump group should take measures

1. Replace the inefficient centrifugal pump. When replacing, use a centrifugal pump that is close to the actual operating conditions to ensure that the replaced pump always runs in a highly efficient state.

2. The application of frequency conversion energy-saving technology. For centrifugal pumps with design parameters greater than the actual operating conditions, the frequency conversion speed control device is installed and is always operated in the high efficiency zone.

3. Promote the use of energy-efficient permanent magnet speed control motors and dual power motors and other new energy-saving products in the main centrifugal pumps.

4. Centrifugal pump selection. When selecting a new pump, the pump produced by the brand manufacturer should be selected to ensure high efficiency of the centrifugal pump.

5. Centrifugal pump maintenance.

(1) Always check and adjust the shaft end seal of the centrifugal pump to reduce the volume loss;

(2) After the centrifugal pump has been operated for 10,000 hours, it shall be overhauled to restore the pump efficiency;

(3) Spread the application of bellows sealing technology on centrifugal pumps to completely eliminate the leakage of centrifugal pumps and increase the volumetric efficiency.

6. Periodically clean the filter cylinder and check the connection of the pipeline to ensure that the centrifugal pump inlet line is unblocked.

7. Strictly follow the operating principle of the centrifugal pump. Before starting the pump, perform a disc pump, open the inlet valve, close the outlet valve, exhaust the exhaust, and check that the inlet pressure of the pump meets the requirements. To prevent pumping cavitation from occurring due to low fluid supply pressure and insufficient flow.

8. Centrifugal pumps are regularly tested for pump efficiency. For pumps with low pump efficiency, the cause must be found in a timely manner and appropriate measures must be taken to resolve them.

When a centrifugal pump is used to pump a mud flow containing large, medium, and small sized material in a liquid, the liquid is sprayed in a tangential direction into the cylindrical chamber to form a vortex, and a portion of the liquid is removed from the chamber in a tangential direction The slurry is injected axially into the chamber and the vortex separates the large size material from the rest of the slurry and the liquid; the remaining mud and liquid are axially removed from the chamber and injected into the inlet of the centrifugal pump; The material coming out of the centrifugal pump serves as a spray liquid for forming the vortex, thereby reducing the wear of the impeller of the centrifugal pump and improving the efficiency of the centrifugal pump.

When a centrifugal pump is used to pump a mud flow containing large to small size materials in a liquid, the method of reducing the wear of the centrifugal pump impeller and increasing the efficiency of the centrifugal pump is characterized in that it includes:

a. The liquid is tangentially sprayed into the vortex chamber to form a vortex, and a portion of the liquid is tangentially removed from the chamber;

b. The slurry is injected axially into the chamber, and the vortex separates the large-size material from the rest of the slurry and liquid;

c. The remaining mud and liquid are axially removed from the chamber and sprayed into the inlet of a centrifugal pump;

d. The material from the centrifugal pump is used as the ejecting liquid for forming the vortex; therefore, the large-sized material is moved toward the outer circle of the vortex, and as a result, medium, small, and size materials and liquids are injected. The centrifugal pump, therefore, reduces wear of the impeller and allows the pump to run at high speed, thus increasing efficiency.

Main product

Flow Wrapping Machine,Noodle Packing Machine Co., Ltd. , http://www.flow-wrappingmachine.com

In this pursuit of beauty, lace can belong to the pleasure of a woman's gift. Spring / Summer 2015 Pink Mary Pink Marche continues the delicate, romantic style, the French rose leaves spread on the silk growth, but under the sun does not reveal the edge, outlined the gentle dream of a Midsummer Night's dream. Elegant pink nude color to create a fresh and gentle atmosphere, looming lace interpretation of the details of the dress romantic.

Old castle walls covered with red rose vines, dark colors at night but no dark incense was attacked. Black lace S******t hem hollow design, revealing the wild beauty of rose prickly; waist and legs under the skin in the thin black gauze looming eyesight bright spot. High-heeled lace handmade shoes, light stealth, revealing the mysterious and glamorous sky.

Elegant plume feather-like lace delicate, single product regardless of black and white have a natural quiet beauty. In addition to daily wear can add to the charm of Women, more important occasions for you to add color, quality sense and really wear a high degree.

Romantic woman knows where to add a little soft, where the more a trace. And how to integrate into their own romantic and elegant taste, I believe your mind must have the answer, heart it? Now go to the National Pink Mary Pink Ma Tau store counters tried tasting!

Hoodie Sweatshirts

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Men Sweater,Summer Sweater,Women Sweater Co., Ltd. , http://www.men-sweater.com

April 24, 2016, a "fashion. Impression" as the theme of the fashion show splendid performance in Shenzhen Jin Mao Yuan Hotel, opened Di Figure prelude brand 2016 autumn and winter orders will open the new season of fashion tour.

Autumn and winter 2016, the continuation of the "fashion" of the core concepts, elaborate fashion this season ... ... When the fashion melodious sounded, models are dressed in this season new products, with elegant makeup and refreshing hairstyle models step by step, with Di family And the guests travel together fashion trip: the Dutch town, picturesque streets of Paris; the ancient civilization of the Seine, quietly walking through the streets of Milan ... ... amazing fashion heritage and changes, sediment spread.

Pants & Jogger

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Want to wear a small group of the United States and the United States over the long holiday, but afraid of the weather cold, how to do? Xiao Bian think you can bring a personality jacket, first of all can be warm, but also concave shape at any moment, take a quick look at what kind of coat with it.

This red leather jacket with black cascading style S******t reveals a boundless aura, the red dress Xiaobian remember Liu Yifei in an ad through a similar piece, the red leather is not as black leather as introverted, handsome, it More shows a publicity, beautiful beauty. With the choice of fashion is also a single product girdle, with black and white will never make mistakes, with the overall brilliant, bright.

Polka dot suits more professional style, and here we have chosen the pearl collar black sleeves within the ride, the entire set of clothing to show a decent business style, but we also did not choose pure black jacket, dot Design adds a touch of casual taste, does not look too serious, and then with the same paragraph is also a small s******t. Both inside and outside echo as a whole become more harmonious.

Pullover

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The beauty of life

Not looking up

It is close

The pursuit of beauty

Not at your fingertips

The cloud is the moonlight

There are so many temptations indifferent

There are so many opportunities to let it go

Why did someone sigh?

But only people who know it know this is a sudden

Not pleased, not to have compassion

Not as a result of high but natural nature

It is an innate part

Let it melt into the bones

Black pure, hot red, who did not meet before the meeting can be foreseen to make such a day, the perfect match. T-shirt and wide-leg pants with the original is also commonplace, but with a smooth fabric texture and three-dimensional smooth cut to win. What is lacking in life is this pure, just can complement you by dress, nice.

Cotton lazy called literary, tooling neutral can also be called literature and art, so do not use the narrow concept of literature and art to read the word. Do not want to let yourself wear fragile look, then try such an insane expression! Black and white gray tri-color shirt above the free, as we born a look at the fall of the striped shirt, lower body with a leather s******t, large version to a certain extent weakened the tough look, this boyish wind instead Looks like you are more cute and special.

Photo credit: Foucault

Brass CNC Machining Parts

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To coat the time, the coat has been selected on the left a nice look inside take, if the set up, the two clothes complement each other, if you hit the color will undermine the overall style, then come take a look at there What kind of good-looking take it?

This pale pink coat is very temperament color, but if you do not have to wear within the ride will undermine the overall style, so here is the choice of black long fringed mix, black is the middle color, and warm colors can be cool colors With black, and here choose black will not be overwhelming, and light pink collide, but also to increase the quiet, calm temperament.

This light blue long-sleeved coat is a lively, bright temperament, so it should take the inner ride, we chose a printed white T-shirt with a combination of jeans, wearing this dress is like Back to that energetic, youthful and lively time.

Therefore, the choice of ride is also a skillful thing, come and learn it.

Injection Molding

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MCLEMAN takes the concept of "Professional, Fashion and Health" as its brand spirit, and introduces the concept of comfort and personal wear throughout product design and production to create the inner beauty of men's health, highlighting and subliming the charm of men. MCLEMAN in the spirit of humanistic care, "JUST FOR MEN" professional attitude, bringing the supreme feeling of modern men's wear, and guide the men's clothing fashion trends, reflecting its unique masculine charm.

All MCLEMAN products are made of eco-friendly fabrics to ensure they are healthy and natural. Product design combined with the human version of the type, the subtle consideration of the perfect consideration, as much as possible to exclude easy to deform after washing, easy to shift when wearing sports, trousers local tightness and other issues, bring men really comfortable wearing experience.

Gentleman respect for quality products: This series of products directly for those who make a career and family gentleman, they are mature and unique charm. The series of simple classic style, calm and elegant colors, new environmentally friendly high-quality fabrics, bring not only healthy and comfortable underwear products, more is to meet the gentlemen self-affirmation, self-realization of the consumer psychology, to achieve They respect the ideal and pursuit of life.

Hipster fashion products: The series of products using translucent ice silk, mesh and other fabrics, combined with low waist, low waist style, the appropriate interspersed with different color, dot, line, face will be bright colors, a variety of materials Applied to products, laid the product of ***y and stylish tone, fully meet the young family of fashionable pursuit of the mentality of the influx of people.

Jun Shi boutique products: This series of products to meet the consumer is the young white-collar workers and young elite, they are passionate about life, busy with hard work while pursuing a higher quality of life. Boutique products simple and stylish, introverted yet without strain. Bright colors, just right decorative lines, making the product is full of stylish sports, handsome men's special choice

Turning Service

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The change of the start method of the fire pump in the new regulation: "Technical specifications for fire water supply and fire hydrant system" has comprehensively stipulated the design, installation, construction, commissioning, acceptance and maintenance management of the fire water supply and fire hydrant system, not only with the The professional specifications of the regulations are also the basic and universal standards that govern various types of water fire extinguishing systems in terms of water source protection, water supply methods for fire-fighting water supply systems, and design parameters of fire-fighting water supply systems.

For technicians engaged in water supply and drainage professional, "Technical Code for Fire-fighting Water Supply and Fire Hydrant System" GB50974-2014 should be an important criterion. For the most basic fire hydrant fire extinguishing system, the change of new regulations should be referred to as fire hydrant. System startup method.

1, the drawbacks of the original specification

The original code requires that the hydrant system of the temporary high-pressure water supply system must have a fire pumping button at the fire hydrant. In this case, the fire pump may have started. However, if the fire extinguishing system fails to fire in the future, the whole fire pipe network will not be put into operation. Waterless gun out of water to extinguish fire) The fire pump has been started, this will inevitably cause the pipe network pressure to increase sharply, resulting in a serious overpressure phenomenon, most likely to cause the pipe network burst, if there is a burst of fire, the entire fire hydrant system will collapse, the consequences are unimaginable .

Since any fire hydrant start pump button must start the fire main pump, put a group of main lines to put all fire hydrant buttons on the main line. This mode is independent of the fire alarm controller. After the button is accidentally lowered, special tools must be used to reset it. There are as many as hundreds of thousands of hydrant systems to find the button that needs to be reset to bring difficulties.

2. Control requirements for fire hydrant system with automatic fire alarm system set by the new specification

The latest fire code requires a temporary high-pressure fire hydrant system with an automatic fire alarm system. The fire hydrant pump-start button may not be provided but only an alarm button.

The first kind of interlocking control method, the flow switch of the high-level fire-fighting water tank outlet pipe or the low-pressure pressure switch signal of the water pump outlet serves as the trigger signal, and directly controls the starting hydrant pump;

In the second linkage control mode, the action signal of the fire hydrant button is used as the linkage trigger signal and is connected to the linkage controller of the fire control room, and the action signal of the fire hydrant button is sent to the fire linkage controller. After the action of the linkage control confirmation button is pressed The given control logic sends a linkage to open the fire hydrant pump signal. The fire pump action signal is fed back to the fire control room and displayed on the fire linkage controller.

3. Control requirements of the new code for fire hydrant systems without automatic fire alarm system
The number of fire hydrant is relatively small for the temporary high-pressure fire hydrant system without the automatic fire alarm system. The fire hydrant pump is still provided with the fire hydrant pump pump button. The on-site personnel opens the hydrant valve and presses the hydrant button. The hydrant button directly activates the hydrant pump and the hydrant pump. The action signal is displayed on the fire hydrant button by the fire linkage controller, which brings convenience to reset.

For the low pressure switch setting of the system, the initial value of the low pressure switch is the height difference between the elevation of the pressure switch and the highest water level of the high level fire water tank. The water level of the high level tank drops, and the static pressure felt by the low pressure pressure switch is reduced and converted into an electrical signal. , start the main fire pump; specifications given pressure switch electrical contact pressure gauges, pressure sensors, which makes the design more maneuverable.

4, the new specification of the flow switch, pressure switch settings

When the water level of the high water tank drops, the flow switch on the water outlet pipe of the water tank senses the flow of water and converts it into an electric signal. The main pump is started. The initial value of the flow switch should be zero. As for the flow rate, it will alarm. Personally think that it should be Select a suitable value between the leakage flow of the pipe network and 5L/S.

Does the sprinkler system with a high level fire water tank require a flow switch at the outlet pipe of the tank? Article 11.0.4 of the “New Regulations” states that: The fire pump should be provided with a pressure switch on the main pipe of the fire pump. High-level fire-fighting water tanks on the discharge pipe or alarm valve pressure switch light switch signal to automatically start the fire pump directly, literally should not be required, this study believes that because of sprinkler system in the layered or sub-area automatic On the horizontal main pipe of the sprinkler system, the water flow indicator is set on the floor or the partition, and both are coded into the program with the fire control center according to the address code.

Once a fire occurs in a certain zone or room, the sprinkler starts to spray water. When the system water passes through the indicator, the contact circuit in the indicator is turned on, and the zone (or layer) is controlled on the console. Somewhere there was a fire and an alarm was issued. At the same time, the main spray pump is turned on automatically for continuous water supply and fire extinguishing, so it is considered reasonable to no longer set the flow switch.

Conclusion

The introduction of "Technical Code for Fire-fighting Water Supply and Fire Hydrant System" and "Design Specification for Automatic Fire-alarm System" have made all types of fire-fighting equipment more timely and fire control more effective. From the point of view of the fire-fighting mode, the control of the system is more human, more operable, and more convenient to maintain. The setting of pressure switch and flow switch makes the design and operation of the system closer to the developed countries in the world, avoiding malfunctions and solving the problem of difficulty in resetting after misoperation. The forced detection of various water source and water level signals makes the fire water supply reliable. More ***ual.

Brass Parts

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