Slurry pump how to install?

1) must ensure that the slurry pump turning in the same direction indicated by the arrow on the bracket. The motor must be completely disengaged Trial pump, non-motor drives the pump shaft reverse rotation, otherwise it will cause damage to components.
2) packing seal of pumps, the packing must be added as required before driving. 3) mechanical seal pumps, seal must ensure the supply of water. Non run dry, otherwise the mechanical seal will be burned.
4) using thin oil lubricated pumps, pump before oil level line should be the subject of fuel oil. Oil-free driving is strictly prohibited, otherwise, the bearing will be burned.
Second, the installation

1) before installation inspection
Pump at the factory inspection and test, to ensure they are in good working condition, it must be properly installed. Installation should first press “Packing List” Check device model, the parameter is correct, whether the parts are complete and intact, technical information and quality onboard proof is complete. After verification, should carefully read the relevant technical information, information on technical requirements and operating essentials, before installation, should not blind.

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Slurry innovation is the development of the road vicious competition Service

Agricultural submersible pump market is highly competitive, the major consumer groups small submersible pumps are farmers, under the premise of guaranteeing quality, the farmers figure is affordable. Farmers want to spend nothing wrong with inexpensive products, but some businesses blind pursuit of cheap, shoddy, to the extent that intense competition in the market, which makes large enterprise market not only difficult, but also to the enterprise product upgrades more difficult. It is therefore recommended not to pump and valve businesses shopping prices, rely on innovation, by upgrading find a new breakthrough.

First, to adjust the product structure, we must first make business thoroughly studied existing products, according to advanced materials science, changes in the level of technology and reasonable adjustment of existing products to ensure that the level of product technology and social science and technology development synchronization.

Second, we must increase the new product development efforts, enhance their skills. Mention of new products, many companies have a misunderstanding: the early years of the submersible pump sales situation is better, everyone rushing on submersible pumps, slurry pumps market now see good, regardless of how the ability to be on the slurry pump. In fact, the new product is to go beyond existing products when technical problems only submersible pump family of products to be studied on a lot, how to improve the power index of the pump, increase lift, reduce the volume, improve efficiency, reduce power consumption, the use of advanced materials, technology, and how to produce excellent pump parts, which all belong to the new product category.

According to a recent submersible pump market did a market survey and found that all manufacturers of products structure monotony, exactly the same shape, no features, no innovation. It can be said, who advance out of this vicious circle of monotony, who will win in the new round of market competition.

With particular attention to the rural market demand, vigorously develop rural consumer products. With the rapid development of new rural construction, home automatic water supply device, gas pumps, household sewage pump, domestic hot water circulating pump, etc. increase market demand for space. Enterprises should do more and do more market research and explore new areas.
From a business perspective, to strengthen modern scientific marketing idea. Pump able to sell is the last word, to sell the pump is not rework the truth harder simple sentence or two popular sales channel to understand the importance of service sectors. Some people say that Chinese people who are selling the product, and foreigners selling brand and services. Pump industry should learn from foreign advanced mode, multi-brand and service doing something, do something in the article, so that people really have access to safe pumps.

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Leakage occurs when commissioning horizontal dredge pump

Horizontal slurry pump mechanical seal after the static test, the high-speed rotation of the centrifugal force generated when the operation would inhibit media leaks. Therefore, the exclusion of commissioning mechanical seal leakage between the shaft and cover seal failure after, basically due to the dynamic and static ring friction caused by sabotage. Factors causing friction seal failure are:

(L) operation, because the evacuation, cavitation, hold pressure and abnormal, causing large axial force, so dynamic and static ring contact surface separation;

(2) When installing the mechanical seal compression is too large, resulting in serious vice Friction wear, abrasion;

(3) tight ring seals, spring can not adjust the axial float ring of the amount;

(4) stationary ring seal is too loose, when the axial float ring, stationary ring from the stationary ring seat;

(5) working medium is particulate matter, running into friction, testing dynamic and static ring seal faces;

(6) The design selection is incorrect, the sealing face pressure is low or the sealing of large and other materials expand and contract.

The above phenomenon is slurry pump mechanical seal in the commissioning of a recurrent problem, sometimes you can adjust the stationary ring seat and so be eliminated, but most need to re-disassembly, replace the seal.

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Leakage occurs when commissioning horizontal dredge pump

Horizontal slurry pump mechanical seal after the static test, the high-speed rotation of the centrifugal force generated when the operation would inhibit media leaks. Therefore, the exclusion of commissioning mechanical seal leakage between the shaft and cover seal failure after, basically due to the dynamic and static ring friction caused by sabotage. Factors causing friction seal failure are:

(L) operation, because the evacuation, cavitation, hold pressure and abnormal, causing large axial force, so dynamic and static ring contact surface separation;

(2) When installing the mechanical seal compression is too large, resulting in serious vice Friction wear, abrasion;

(3) tight ring seals, spring can not adjust the axial float ring of the amount;

(4) stationary ring seal is too loose, when the axial float ring, stationary ring from the stationary ring seat;

(5) working medium is particulate matter, running into friction, testing dynamic and static ring seal faces;

(6) The design selection is incorrect, the sealing face pressure is low or the sealing of large and other materials expand and contract.

The above phenomenon is slurry pump mechanical seal in the commissioning of a recurrent problem, sometimes you can adjust the stationary ring seat and so be eliminated, but most need to re-disassembly, replace the seal.

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Slurry pump fever how to do?

Between the shaft and the centrifugal pump casing there is a gap, as no measures are taken, the gap will leak. When the liquid pressure greater than atmospheric pressure at the gap (such as a single-stage centrifugal pump), the pump housing of the high pressure water does not leak out a large gap by some; when the fluid pressure at the gap is a vacuum (eg slurry pumps) , the air will leak from the gap into the pump, thereby reducing pump water absorption. To do this, set the seal means in the gap between the shaft and the pump at a known seal.

Seal fever, causes and treatment methods are as follows:

Packing too tight or friction. Approach is to relax the packing, check the seal tube.

Seal ring and the seal of dislocation. Approach is to re-check the alignment.

Washing, cooling has good. Processing method is to check the flush pipe cooling cycle.

Mechanical seal is faulty. Processing method is to check the mechanical seal.

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Analysis of several reasons Slurry pumping the slurry

Slurry its simple structure, easy maintenance, high efficiency and become the most widely used as a trash pump, but also because sometimes mention the slurry and people feel more trouble. Now it is analyzed on the reasons for this failure.

Inlet and an air pump body

(1) Some users before Slurry Pump not filled enough paste, sometimes looks irrigation water from the bleed hole overflow, but is not spinning shaft post air completely discharged, resulting in a little air still remains in the inlet or the pump body.

(2) in contact with the pump inlet against the flow direction of the horizontal section of the application above 0.5% decline slope, connect one end of the pump to the highest import, do not completely level. If the upward tilt, will be retained within the inlet air, reducing the pipes and pumps in the vacuum, suction effect.

(3) long-term use of the pump packing packing too worn or too loose, resulting in a large amount of water discharged from the gap filler and shaft sleeve, the result is on the outside air from these gaps into the interior of the pump, affect the carrying water.

(4) into the water because of the long-term potential underwater holes in the wall corrosion occurs, after declining water pump work, when these holes out of the water, the air entering the inlet pipe from the hole.

(5) the inlet pipe bends cracks appeared slight gap inlet pipe and pump connections, are likely to allow air to enter into the water.

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AH series slurry pump seal in the form which has several

There are two types of shaft seal, the auxiliary impeller shaft seal and packed gland.

(1), the auxiliary impeller shaft seal: at the pump inlet is pressure value is greater than the pump outlet pressure value 10% single stage pump or multi-stage pump first, secondary impeller shaft seal can be used, with secondary impeller shaft seal without shaft seal water, not diluted slurry, good seal effect and so on.

(2) packing shaft seal: packing shaft seal of simple structure, easy maintenance, but be used seal water, not suitable for the condition of secondary impeller shaft seal adopts packing seal.

Filler usually consists of oil-soaked cotton filler composition, primarily containment, the packing should be adjusted by adjusting the gland and nut for the adjustment. If packing it too tightly, starting difficulties, running at the same time when power and axial heating if packing too loosely, the leakage of liquid in the pump is too large, it will reduce the efficiency, or within the area of low pressure or pump air infiltration in may, nut tightened a drop of liquid to leak out the level 1s as appropriate. Placed water seal ring, its purpose is Dang pump within sucking entrance Yu vacuum situation Shi, from water seal ring injected above 0.1Mpa of liquid (water) to prevent air leak into pump within; Dang pump within hydraulic above 0.1Mpa Shi, available above pump within pressure 0.05-0.01MPa of sealed liquid (water) injected, up to water seal role, to reduced leak, and up to cooling and lubrication of role.

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Slurry pump selection important?

Basic requirements for pump selection should be based on process, and drainage requirements, from six aspects into consideration, the liquid throughput (flow), equipment lift (lift), liquid (Ph), piping layout (piping length and diameter size), the pump’s overall performance and operation conditions
1, traffic is one of the most important performance parameters of the selected pump, it is directly related to the plant capacity and transmission capacity. Design of design institutes can work out the pump, minimum, maximum, three flow. When choosing a pump, according to the maximum flow, taking into account the normal flow, when in the absence of the largest, is usually preferable to 1.1 times times the normal flow for maximum flow.
2, unit head required by the system is another important performance data for the selected pump, used to enlarge margins to lift after the selection.

3, and liquid nature, including liquid media name, physical properties, chemical nature and other nature, physical properties has temperature, and density and stick degrees, media in the solid particles diameter and gas of content,, this involves system of head, effective gas corrosion allowance calculation and right pump of type; chemical nature, main refers to liquid media of chemical corrosion sex and toxicity, is selection pump material and selection axis seal type type of important according to.

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Slurry Pump and under water due to what

Slag pulp pump in using Shi if installation of location than level to high, this situation Xia horizontal slag pulp pump of sucking water pipeline bottom must installation a prevent water back back pool of end of valve, in each using slag pulp pump yiqian have for horizontal slag pulp pump and the imports pipeline inside added full water Hou to run, this is we repeatedly stressed slag pulp pump started must for intrusion started way of main reasons. In use will inevitably encounter a slurry pump under water, slurry pump and what are the reasons for dissatisfaction with water?

1, because the valve at the end of a long soak in the pool bottom, bottom valve of horizontal slurry pumps for liquids corrosive lax or other reasons causing damage or sealing reasons should remove bottom valve repair or replacement of the pump foot valve.

2, due to the transport of liquid containing debris inside the bottom valve the valve was blocked by debris resulting in a bottom valve seal loose that’s why slurry pump under water.

3, due to imports of pipe sealing slurry pump cause or the sealing of pipe joints not strictly leakage phenomenon.

4, horizontal waterproofing slurry pump slurry pump caused by bolts not tightened and reasons for dissatisfaction with water, you should tighten the drain bolt.

5, there is the often overlooked is because AH slurry pump piping with plenty of water and for water pipes inside air is unable to drain away when you run out of irrigation can also lead to pump under water.

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Cause analysis of Slurry Pump cavitation

When the slurry flow in slurry pump, when the slurry pump suction height is too large and when the temperature of the liquid is higher, resulting in suction pressure is less than or equal to the saturated vapor pressure of liquid, due to the shape and characteristics of fluid flows in which change direction suddenly lights, leaves nearby non-face, there are some partial area of low pressure. If in low voltage district of fluid pressure reduced to corresponds to liquid temperature of saturated steam pressure, liquid will began vaporization and produced bubble;

if pressure continues to reduced, bubble and regional will gradually increases and expanded; Yu this while pressure continues to reduced, bubble and regional will gradually increases and expanded; Yu this while part original may dissolved in liquid in the of some lively gas (as water in the of oxygen,), also will due to pressure reduced and escape again became bubble. When these bubbles with the liquid flow into the pump high pressure area, they are compressed and condensed or broken quickly disappeared. Moments of fizz, bubble around the liquid quickly into bubble setting loss of hole, along with a local phenomena of water hammer in high temperature and high pressure. Slurry pump impeller by great force of impact, so the cavitation phenomenon.

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