Method and device for pump flushing

IPC classes for russian patent Method and device for pump flushing (RU 2506453):

F04D7/00 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts (pumping liquids and elastic fluids at the same time F04D0031000000)

F04B1/00 - POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS (engine fuel-injection pumps F02M; machines for liquids, or pumps, of rotary-piston or oscillating-piston type F04C; non-positive-displacement pumps F04D; pumping of fluid by direct contact of another fluid or by using inertia of fluid to be pumped F04F; crankshafts, crossheads, connecting-rods F16C; flywheels F16F; gearings for interconverting rotary motion and reciprocating motion in general F16H; pistons, piston-rods, cylinders, in general F16J; ion pumps H01J0041120000; electrodynamic pumps H02K0044020000)

E03F5/22 - Adaptations of pumping plants for lifting sewage (wheeled apparatus for emptying sewers or cesspools E03F0007100000; pumps, pumping plants, per seF04)

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FIELD: engines and pumps.

SUBSTANCE: invention relates to hydraulic pump flushing. In compliance with proposed method, fluid is forced through pump housing to remove accumulated solids. For this, bleed pump 30 forced water suspension in flushing tank 31 to flush pump housing. Volume of suspension to be forced in equals at least the pump housing volume. Cleaner module comprises vessel and pump connected thereto and having outlet 34 to allows discharge of water suspension there through from said vessel. Bleed pump communicates with inlet 34 and outlet 40. Flushing tank 31 made of material ruling out the sticking of solids thereto has outlet 33 communicated with pump outlet 34 and water suspension discharge pipe 36. Volume of suspension to be forced into the tank 31 equals at least the pump housing volume.

EFFECT: regular flushing intervals, efficient removal of solids.

15 cl, 3 dwg

The technical field to which the invention relates.

The present invention relates to a method of cleaning the pump housing and, more specifically, housing the drain pump home module portions of water purification, the appropriate restrictive part of claim 1 of the formula.

According to the proposed method through the pump housing fluid flow to remove accumulating in it solid.

The invention relates also to a Sipper device, the appropriate restrictive part of item 8 of the formula.

The level of technology

The pumps used in the cleaning modules, batch actions, work in environments consisting of liquids and solids. Specified substance easily accumulate, in particular, in the case of the pump, which may interfere with the operation of this module, and move the solids from the pump in the direction of flow is usually undesirable. This situation occurs when, for example, water treated in the cleaning module portions steps removed from it. When starting the pump, which had accumulated a solid substance, it drains well and the specified residue. If the volume of liquid displaced so small, this substance remaining in the internal volume of the pump, substantially increases the amount of undesirable impurities.

To avoid the above paragraph is oblem, for such pumps technical solutions were developed using compressed air. They submitted, in particular, in the description of the patent document EP 1566498 and in the description to German patent for useful model №20105661. According to the description of EP 1566498 solid matter accumulated in the piping, remove the pipe is evacuated from it by means of compressed air back into the separating chamber for sewage.

In the publications of JP 2004351400 and JP 20001271782 described pumps, which can continuously separating water from sludge containing solid. However, such technical solutions are expensive, complex, and their use in cleaning the modules batch actions difficult.

Disclosure of inventions

The problem to which the present invention is directed, is to eliminate the problems inherent in known technologies, and the development of completely new technical solution relating to, first, remove the solids from the drain pump cleaning module portion actions during the working periods specified block.

The principle underlying the invention is that the housing of the drain pump is washed, passing through him aqueous suspension coming from the washing tank, and tank performs the specified function of the buffer.

At the same time until the flushing tank Zap Laut, using to pump water suspension in tank drain pump to simultaneously upload to remove from the pump housing, at least part of the solids inside the housing. In the most suitable mode volume of the aqueous suspension is pumped into the tank at least equal to the volume of the body of the drain pump, and in the preferred embodiment, surpasses it.

In addition, in the framework of the present invention developed a special device that uses a drain pump and is designed for use in the cleaning module portion of the action. The specified device includes a pump with a discharge pipe and connected to the working capacity of the module. Thus, the possibility through the outlet pipe of the pump to remove it from the cleaning module portion, the aqueous suspension, resulting in a production capacity. According to the invention of the washing tank is displaced in a vertical direction relative to the pump (i.e. is above him) and contains inlet and outlet openings and the inlet connected to the outlet of the pump. In relation to a drain tank acts as a buffer, and its volume at least equal to the volume of the drain pump. When this condition becomes possible to inject into the tank through the pump outlet and the inlet of the tank volume of liquids and, the equivalent of a full volume of the pump casing.

More specifically, the method according to the present invention is mainly characterized by the signs of the characterizing portion of claim 1 formula.

In turn Sipper device according to the present invention is characterized by distinctive signs part 8 of the formula.

The use of the invention provides significant advantages. Thus, the proposed solution allows to flush the pump through the required intervals. Removal of solids remaining inside the pump, can be performed efficiently, and provides the ability to prevent migration of the specified substance in the treated water.

Brief description of drawings

Hereinafter the invention will be described in more detail by means of the detailed description with reference to the accompanying drawings.

Figure 1 on the side view illustrates the basic module design of wastewater treatment, working on a batch principle.

Figa and 2, respectively, in the perspective image and the side view, in partial section, illustrating the construction of the Sipper device equipped with a flushing tank.

The implementation of the invention

As described above, in the technical solution under the present invention the housing of the drain pump on isaomega module portions actions clean through regular counterflow rinsing. Flushing ensures that harmful amounts of solid substances do not accumulate in the pump and that the pump can be removed together with the liquid.

Provides the ability to carry out the above procedure once or repeated several times until the pump will not be actually free from solids. After the cleaning module portion of the steps you can remove the water through the flush tank, with no migration of any solid matter from the pump housing together with a removable substance.

Allows for flush the pump regularly during his work. In this case, the acceptable intervals between washes are chosen in accordance with the utilization. In practice, it is sufficient to wash the pump cleaning module portions steps 1-5 times in 24 hours or less.

Wash tank, which in the most convenient option is placed over the pump, fill in pulsed mode until then, until it is almost full, and so that the solid is present inside the pump housing, is also passed into the flush tank. After that, the mixture of the liquid/solid gets the opportunity under the influence of gravity back through the pump, thereby washing his body.

Washing is carried out as neo is needed. Usually the duration of the injection pulses is approximately 0.1 to 20, preferably about 0.5-10, and in an even more preferred variant - 1-3 C. the Specified duration depends on the capacity and volume capacity. The duration of the leaching period between injection pulses is equal to at least 10, preferably approximately 15 to 5 minutes, and in a more acceptable option for at least 1 min. it is Important that the duration of the leaching period was sufficient to guarantee the removal of solid matter from the pump.

The lower part of the washing tank has the shape of a cone, or its surface is narrowed in some other way. This part is connected to the outlet of the pump. In a more preferred embodiment, the neck of the conical lower part is connected to the outlet of the drain pump. Then water slurry injected into the wash tank, under the action of gravity easily flows back into the pump and can wash his body.

The dimensions of the washing tank is chosen, for example, so that its volume was 1-3 times the volume of the pump. When this ratio of the volume of a solid substance can be effectively flushed out of the internal cavity of the pump. On the other hand, the advantage of this system is the fact that the volume of the tank is not large enough, the button filling and countercurrent washing could shake sucks in a production capacity. In accordance with these recommendations, volume wash tank refers to the volume of the pump is approximately as 1 to 10: 1, particularly preferably as 1-5:1.

During operation, the cleaning module portion actions purified water regularly removed from the working tank through the outlet pipe. The possibility of implementing wash function, described above, is provided by the fact that the output pipe to the washing tank in the preferred embodiment, is located on the top edge of the tank below the level to which, during the pump-pulse rises suspension in water, injected to flush the pump.

Conical bottom part can be made from the same material of the remaining portion of the wash tank. It is preferable to select the material, the surface of which the solid does not stick. Suitable materials include various thermoplastic materials, and structural materials with thermoplastic coating. To improve the resistance to adhesion of the surface can be subjected to a separate additional processing. Suitable plastics are, for example, polyethylene, polypropylene and other polyolefins.

The preferred implementation of the present invention are presented in the attached drawings. In figure 1, which shows a schematic construction of the cleaning module portion de is affected, used the following digital signs:

1. cumulative capacity

1A. Bay power plant

2. working capacity

3. the connection between the vessels

4. inlet pipe

5. transfer pump

6. pipe pump pump

7. the control center

8. a level controller for pumping pump

9. plate aerator

10. pipe aerator

11. compressor

12. the measuring device

13. the control unit pump chemicals

14. the pump chemicals

15. Flex

16. output a suction pump

17. outlet pipe

18. a pump for pumping sludge

19. pipe for pumping sludge

20. tank excess sludge

21. the base compartment of the power plant

22. wash tank

The cleaning module, shown in the drawing, is designed for domestic wastewater treatment. It contains two main parts, namely the accumulation tank 1, in which the subject waste water is fed through inlet pipe 4, and the working tank 2, in which the use of activated sludge spend real cleaning. Actually tanks 1 and 2 are separate units, connected to each other through the connection 3. Wastewater is pumped from the storage tank 1 into the working container 2 by means of pumping of the pump 5, the control is imago controller 8 level. The specified controller includes transfer pump when the level of sewage pumped into the accumulation tank exceeds a preset limit value. In the waste water is pumped through the connection 3 to the transporting pipe 6 into the working capacity 2.

The control center 7, through which govern the operation of the entire device placed in the compartment 1A of the power plant, built-in storage capacity. The base 21 of the specified compartment divides the block of the storage tank into two parts. By placing the center of the 7 management and compartment 1A of the power plant inside the accumulation tank 1 the centre reliably separated and isolated from the surrounding space. In compartment 1A is also a compressor 11, which produces compressed air with the ability to escalate it into the waste water to be processed in a production capacity. The injection is made with the help of the pipe 10 and the plate 9 aerator located at its end below the liquid surface. In addition, in the compartment 1A is a pump 14 supply of chemicals, as well as Flex 15 supply of these drugs and the unit 13 controls data pump. The specified pump 14 is used for injection of chemicals into the accumulation tank 1.

It is obvious that Bay power plant can be placed not inside accumulating container of the STI, and in some other place, i.e. option described represents only one possible technical solutions.

In addition to pipes and plates aerator, working tank includes a pump 18 for pumping sludge. By means of this pump, you can remove the sludge accumulating in the bottom of the tank. To collect sucks, the holding tank is placed a container (such as a bunker 20) for the excess sludge is connected to the pump 18 through a pipe 19 corresponding destination.

Sewage, submitted to the working container, is subjected to aeration, directing the air through the fins of the aerator in the water directly or using ozonation. In this capacity begins to form sucks (in particular, activated sludge), containing microorganisms. Under the influence of these microorganisms/microbes nutrients in the wastewater are decomposed, followed by the formation of gas and decomposition products soluble in the liquid. These products accumulate in the sludge, thereby forming a layer of sludge, whereas the treated water remains on top of such a layer. This water regularly removed from the tank using the output suction pump 16. The operation of this pump is operated by using the measuring device 12. The pump is connected to the flushing Baku 22 associated with the discharge pipe 17 of the working capacity.

On figa and 2 In the Sipper device according to the present invention, is shown in figure 1, are presented in more detail. Numerical designation 30 and 31 are respectively to the drain pump and placed over him wash Baku. The lower part 32 of the specified tank has a cone shape, and the inlet pipe with the inlet hole 33, provided with a flange connected to the outlet 34 of the pump 30. The control unit of the pump and its inlet in communication with the working capacity, denoted, respectively, as 35 and 40. As shown in the drawings, the outlet pipe 36 of the washing tank is located on the upper edge of the upper cylindrical part 37 immediately below the top wall 38. In the top cover of the tank is placed a valve 39 air bleed, allow the air displaced from the tank pumped water (as shown by arrows). Accordingly, by means of this valve, you can enter in the tank so called compensation air when the tank is emptied through its conical lower part.

As can be seen from the preceding text, according to a preferred variant of the invention, the wash tank 31 is in direct hydraulic contact with the pump 30 between the inlet hole 33 of the specified tank and the outlet 34 of the drain pump valve no. With this the technical solutions when you turn off the pump wash tank is emptied automatically under the influence of gravity. During this process, the flow of fluid flowing from the tank, washes the pump casing.

1. Method of leaching Sipper device connected to the working tank cleaning module portion of actions, including passing through the specified device aqueous slurry, characterized in that
as a Sipper devices use drain pump,
- water slurry is injected into the flushing tank (31), which is in hydraulic contact with the drain pump (30),
- use of water, the suspension is pumped to the washing tank for washing the body of the drain pump to remove accumulated in the case of solids,
the volume of aqueous suspensions injected into the wash tank at least equal to the volume of the body of the drain pump.

2. The method according to claim 1, characterized in that the aqueous suspension is pumped from the drain pump (30) to the rinsing tank (31), which is placed above the pump back water suspension from the specified tank in case the drain pump under the action of gravity.

3. The method according to claim 1 or 2, characterized in that the flushing tank (31) functions as a buffer that prevents the release of solids from the cleaning module portion of the action.

4. The method according to claim 1 or 2, characterized in that the aqueous suspension pump drain pump (30) to wash the AK (31) in the pulse mode.

5. The method according to claim 4, characterized in that the duration of a single pulse injection rate of approximately 0.1-20 C.

6. The method according to claim 1 or 2, characterized in that the duration of the leaching period is at least 10 C.

7. The method according to claim 1 or 2, characterized in that after the leaching period, make a removal of fluid from the cleaning module portion via the outlet pipe (36) of the washing tank.

8. The cleaning module portion of the action, containing the working capacity and Sipper device that is connected to the working tank and has an outlet (34), made with the possibility of removal through it from the working capacity of the aqueous suspension, wherein the Sipper device comprises a drain pump (30)associated with the outlet (34) and the inlet opening (40), and placed above the pump wash tank (31)made of a material to which a solid, essentially, does not stick, and having the inlet opening (33)connected to the exhaust the hole (34) of the pump; and an outlet pipe (36) for water suspension; to enable delivery of the full volume of the pump into the tank during one cycle tank capacity (31), at least equal to the volume of the pump casing.

9. The cleaning module of claim 8, wherein the amount of flush tank (31) will bring the flax in 1-10 times more than the volume of the pump.

10. The cleaning module of claim 8 or 9, characterized in that the lower part of the washing tank (31) has a cone shape and is connected to the outlet (34) of the pump.

11. The cleaning module of claim 8 or 9, characterized in that the flushing tank (31) made of plastic, preferably made of polyolefin, such as polyethylene or polypropylene, or from a structural material, which is coated in plastic.

12. The cleaning module of claim 8 or 9, characterized in that the flushing tank (31) has a valve (39) air bleed.

13. The cleaning module of claim 8 or 9, characterized in that the outlet pipe (36) of the washing tank is placed on its upper edge.

14. The cleaning module of claim 8 or 9, characterized in that the flush tank is in direct hydraulic contact with the pump, with automatic removal from the tank of the liquid supplied to the pump by gravity when the pump is stopped.