CN216742020U - Vacuum water diversion tank and suction water pumping device using same - Google Patents

Abstract

The utility model relates to a vacuum water diversion tank and a water pumping device using the same, wherein the vacuum water diversion tank comprises a tank body, a water outlet control valve is fixedly arranged on the tank body, the water outlet control valve is provided with a water inlet communicated with an inner cavity of the tank body and a water outlet communicated with a non-self-priming centrifugal pump, and the water outlet control valve is a check valve used for controlling fluid to flow from the water inlet to the water outlet only so as to prevent gas poured back from the water outlet from entering the tank body through the check valve and damaging the vacuum degree of the vacuum water diversion tank. The check valve fixedly arranged on the vacuum water diversion tank is used for controlling the fluid to flow to the non-self-suction centrifugal pump only, the external gas entering from the failure sealing position of the non-self-suction centrifugal pump is blocked by the check valve, the external gas cannot reversely flow back into the vacuum water diversion tank, and the vacuum degree in the vacuum water diversion tank cannot be damaged.

Description

Vacuum water diversion tank and water pumping device using same

Technical Field

The present invention relates generally to the field of negative pressure aspiration. More particularly, the present invention relates to a vacuum water diversion tank and a suction water pumping device using the same.

Background

In production practice, centrifugal pumps are often used to pump water from a lower location and out. Centrifugal pumps are mainly designed to deliver liquid by the centrifugal force generated by the rotation of an impeller, and can be divided into self-priming centrifugal pumps and non-self-priming centrifugal pumps according to whether the pump body has a self-priming structure. The pump cavity of the self-suction centrifugal pump is provided with a liquid storage chamber, a gas-liquid separation chamber and other structures, so that the self-suction centrifugal pump does not need to be refilled when being opened again after the first priming operation, and only can be refilled for the first time. The self-suction centrifugal pump is relatively simple and convenient to operate, the auxiliary structure is relatively simple, the working efficiency of the self-suction centrifugal pump is relatively low, the structure of the self-suction centrifugal pump is complex, the maintenance and operation cost is high, and the type and the applicability of the self-suction centrifugal pump are not as good as those of a non-self-suction centrifugal pump. The non-self-suction centrifugal pump has high working efficiency, but a pump body is not provided with a liquid storage cavity, and the pump needs to be refilled before being started every time, so that the operation is complex. Because self-priming centrifugal pump and non-self-priming centrifugal pump have merits respectively, so all have the application in the actual production.

At present, in the actual production, when the non-self-priming centrifugal pump is adopted for negative pressure suction, a water inlet pipe can be utilized to be additionally provided with a bottom valve to supply water to the centrifugal pump so as to ensure the continuous operation of the non-self-priming centrifugal pump. In practical application, especially when being applied to impurity-containing sewage, the bottom valve's valve plate card rubbish appears easily, leads to the pump idle running unable to draw water. Moreover, the sealing position is easy to corrode along with the prolonging of the service life, so that the bottom valve is easy to leak water, and the pump is easy to idle and can not pump water.

In order to expand the application range of the non-self-suction centrifugal pump, a scheme of supplying water to the centrifugal pump by using a vacuum water diversion tank is also provided at present so as to ensure that the non-self-suction centrifugal pump can realize negative pressure water pumping and conveying under higher working efficiency. For example, the centrifugal pump and the vacuum water diversion tank disclosed in the patent of the Chinese utility model with the publication number of CN210290171U are connected with a water suction pipeline on the vacuum water diversion tank, and the vacuum water diversion tank is communicated with the centrifugal pump through a water inlet pipeline. When the vacuum diversion tank is used, water is filled in the vacuum diversion tank, the centrifugal pump sucks water in the vacuum diversion tank, and when the water level in the vacuum diversion tank drops to a certain degree, a negative pressure state with a certain vacuum degree is formed in the tank body, so that an external water body can be sucked into the vacuum diversion tank by the water suction pipeline and then sucked by the centrifugal pump.

In terms of a non-self-suction centrifugal pump, packing sealing and mechanical sealing are mostly adopted for sealing on the centrifugal pump, wherein the packing sealing is low in cost and convenient to replace, and can be used for various media. In the using process, after the centrifugal pump stops running every time, the pressure in the vacuum water diversion tank can be lower than that at the impeller of the centrifugal pump, outside air can reversely enter the vacuum water diversion tank through the sealing failure position to damage the vacuum degree of the vacuum water diversion tank, and the sealing failure degree can not leak water but only leaks air. At the moment, when the non-self-priming centrifugal pump is restarted to work, because the vacuum degree of the vacuum diversion tank is destroyed, the situation of 'pumping out' is easily caused, namely the vacuum diversion tank cannot form enough vacuum degree and further cannot pump the external water body. If the normal work is continued, the vacuum water tank needs to be filled again, and the operation is complex.

SUMMERY OF THE UTILITY MODEL

The utility model provides a vacuum diversion tank, which aims to solve the technical problem that when a matched non-self-suction centrifugal pump in the prior art fails in sealing, external air is easy to flow back into a tank body to damage the vacuum degree in the tank. Furthermore, the utility model also provides a water pumping device using the vacuum water diversion tank.

Specifically, the first aspect of the present invention provides the following technical solutions: the utility model provides a vacuum diversion jar, includes a jar body, the jar body has set firmly out water control valve, this water control valve have with the water inlet of the inner chamber intercommunication of the jar body and be used for with the delivery port of inhaling formula centrifugal pump intercommunication from, it is used for controlling fluid only can by the water inlet flow direction to go out the check valve of delivery port for prevent follow the gas that the delivery port was backward irritated gets into the jar body through the check valve and destroy vacuum diversion jar vacuum.

As a further improvement, the check valve has a valve body fixed on the tank body, the valve body has the water inlet, the water outlet and a fluid passage communicating the water inlet and the water outlet, a valve seat is arranged in the fluid passage, a valve plate is hinged and assembled in the valve body through a hinge shaft extending horizontally and used for being matched with the valve seat in a sealing mode to control fluid to flow from the water inlet to the water outlet only, and the valve plate has a blocking stroke of swinging downwards to be matched with the valve seat in a sealing mode to block the fluid passage and an opening stroke of swinging upwards to be away from the valve seat to open the fluid passage in the process of swinging around the hinge shaft in a reciprocating mode.

As a further improvement, the valve seat is provided with a sealing ring surface which vertically extends up and down and is obliquely arranged upwards.

As a further improvement, a suspension rod extending in the up-down direction is fixedly installed in the valve body, and the upper end of the valve plate is hinged and assembled on the suspension rod through the hinge shaft.

As a further improvement, the upper end of the suspender is provided with a connecting section, a mounting seat for the connecting section to pass through is arranged in the valve body, and a threaded fastener for fixedly mounting the suspender on the mounting seat is fixedly assembled on the connecting section.

As a further improvement, the valve body comprises a valve body, the valve body is provided with the water inlet, the water outlet and a valve cavity communicated with the water inlet and the water outlet, the valve cavity forms the fluid passage, the suspender and the valve plate are installed in the valve cavity, the top of the valve body is provided with an installation opening used for installing the valve plate in the valve cavity, and the valve top cover is detachably assembled at the installation opening of the valve body.

As a further improvement, the valve plate comprises a sealing plate main body and a swinging rod which are detachably and fixedly assembled together, the sealing plate main body is used for being in sealing fit with the valve seat, and the swinging rod is hinged and assembled in the valve body through the hinge shaft.

As a further improvement, a limit stop piece is arranged in the valve body and is used for being matched with the oscillating rod in a one-way stop mode to limit the opening angle of the valve plate when the oscillating rod drives the sealing plate main body to oscillate upwards to a set position.

As a further improvement, the valve body is fixedly assembled with the tank body in a sealing mode through a flange connecting structure.

The second aspect of the utility model provides the following technical scheme: a suction water pumping device comprising: a non-self-priming centrifugal pump having a water inlet; and the water outlet of the water outlet check valve of the vacuum water diversion tank is connected with the water inlet of the non-self-priming centrifugal pump through a connecting pipeline.

The beneficial effects are that: when the vacuum water diversion tank provided by the utility model works in cooperation with a non-self-priming centrifugal pump, the check valve fixedly arranged on the vacuum water diversion tank is used for controlling fluid to flow to the centrifugal pump only, external gas entering through the failure sealing position of the centrifugal pump can be blocked by the check valve, the external gas cannot reversely flow back into the vacuum water diversion tank, and the vacuum degree in the vacuum water diversion tank cannot be damaged. When the centrifugal pump is restarted, negative pressure is formed at the impeller of the centrifugal pump, so that gas and water in the connecting pipeline can be pumped out, the check valve is normally opened again, and the vacuum water diversion tank is guaranteed to normally supply water to the non-self-priming centrifugal pump. In the continuous work of the non-self-priming centrifugal pump, the negative pressure environment which is not damaged in the vacuum diversion tank can continuously pump the external water body into the vacuum diversion tank, so that the vacuum diversion tank can continuously supply water to the centrifugal pump, and the phenomenon of pumping out can not occur.

Drawings

The above and other objects, features and advantages of exemplary embodiments of the present invention will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. Several embodiments of the present invention are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which like reference numerals refer to similar or corresponding parts and in which:

fig. 1 is a schematic structural view of a water pumping device provided by the present invention;

FIG. 2 is a schematic structural view of the vacuum diversion tank in FIG. 1;

FIG. 3 is a left side view of the vacuum diversion tank shown in FIG. 2;

fig. 4 is an enlarged view of a portion a in fig. 2.

Description of reference numerals:

1. a non-self-priming centrifugal pump; 2. connecting a pipeline; 3. a check valve; 30. a valve body; 31. a valve plate; 311. a swing lever; 312. a sealing plate main body; 32. a mounting seat; 33. a valve top cover; 34. a boom; 35. a water outlet; 36. a fluid channel; 37. a valve seat; 38. a water inlet; 39. a limit stop member; 4. a vacuum water diversion tank; 5. a tank body; 6. a water injection pipeline; 7. an exhaust overflow line; 8. a vent line; 9. a water inlet joint.

Detailed Description

The technical solutions in the embodiments of the present invention will be described below clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it should be understood by those skilled in the art that the embodiments described below are some embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Corresponding to the vacuum diversion tank matched with the non-self-priming centrifugal pump to work, under the condition that the sealing structure of the non-self-priming centrifugal pump has air leakage failure, when the non-self-priming centrifugal pump stops working, due to the negative pressure environment in the vacuum diversion tank, external air is easily reversely poured into the vacuum diversion tank through the air leakage position of the centrifugal pump and along the connecting pipeline of the centrifugal pump and the vacuum diversion tank, and the vacuum degree of the vacuum diversion tank is damaged.

After the non-self-priming centrifugal pump is restarted, the vacuum of the vacuum water diversion tank is destroyed due to the fact that the external air flows backwards, and the vacuum water diversion tank cannot continuously suck external water for supplement. After the water in the vacuum water diversion tank is pumped by the centrifugal pump, the phenomenon of 'pumping out' inevitably occurs, which easily causes the damage of the centrifugal pump. If the non-self-suction centrifugal pump is expected to work normally again, the vacuum diversion tank needs to be refilled, and then the vacuum degree is built in the vacuum diversion tank again. Therefore, the non-self-suction centrifugal pump needs to be refilled with the vacuum water diversion tank every time the non-self-suction centrifugal pump stops, the operation is really too complicated, and the efficiency is too low.

In view of the situation, the check valve is directly and fixedly arranged on the vacuum water diversion tank, the check valve is used for controlling the fluid to flow to the centrifugal pump only, the external gas entering from the failure sealing position of the centrifugal pump can be blocked by the check valve, the external gas cannot reversely flow into the vacuum water diversion tank, and the vacuum degree in the vacuum water diversion tank cannot be damaged. When the centrifugal pump is restarted, negative pressure is formed at the impeller of the centrifugal pump, so that gas and water in the connecting pipeline can be pumped out, the check valve is normally opened again, and the vacuum water diversion tank is guaranteed to normally supply water to the non-self-priming centrifugal pump. In the continuous work of the non-self-priming centrifugal pump, the negative pressure environment which is not damaged in the vacuum diversion tank can continuously pump the external water body into the vacuum diversion tank, so that the vacuum diversion tank can continuously supply water to the centrifugal pump, and the phenomenon of pumping out can not occur.

Having described the general principles of the utility model, various non-limiting embodiments of the utility model are described in detail below. Any number of elements in the drawings are by way of example and not by way of limitation, and any nomenclature is used solely for differentiation and not by way of limitation.

The principles and spirit of the present invention are explained in detail below with reference to several representative embodiments of the utility model.

Embodiment 1 of the suction water pumping apparatus provided by the present invention:

as shown in fig. 1 to 4, the water pumping device comprises a vacuum water diversion tank 4 and a non-self-priming centrifugal pump 1, wherein a water outlet control valve is fixedly arranged on a tank body 5 of the vacuum water diversion tank 4, and a water outlet 35 of the water outlet control valve is connected with a water inlet 38 of the non-self-priming centrifugal pump 1 through a connecting pipeline 2, so that the vacuum water diversion tank can supply water to the centrifugal pump, and the normal operation requirement of the centrifugal pump is met.

As shown in fig. 1 to 4, the vacuum diversion tank 4 specifically includes a tank body 5, and the tank body 5 is provided with a water inlet joint 9, a water injection pipeline 6, an exhaust overflow pipeline 7, an emptying pipeline 8 and a water outlet control valve. Wherein, water supply connector 9 sets up on the upper portion of jar body 5, and water supply connector 9 is used for sealing connection inlet channel to utilize the internal negative pressure environment of jar to pump outside water. The water injection pipeline 6 is used for connecting a water source so as to actively inject water into the tank body, and the gas in the tank body is conveniently discharged. The exhaust overflow pipeline 7 is used for conveniently exhausting the gas in the tank body 5 to the atmosphere when water is injected, and can also be used for safely overflowing when the water injection is finished. The emptying pipeline 8 can be used for realizing the sewage discharge operation when the tank body is cleaned and maintained. The water outlet control valve is used for being connected with the non-self-suction centrifugal pump 1 through a connecting pipeline 2 so as to realize normal water supply.

Wherein, be equipped with corresponding control valve respectively on water injection pipeline 6, exhaust overflow pipeline 7 and the pipeline 8 of empting to the control corresponds the pipeline and normally works, is not repeated in detail.

As shown in fig. 2 and 4, the water outlet control valve is specifically a check valve 3 fixedly arranged on the vacuum water diversion tank 4, the check valve 3 is provided with a water outlet 35 and a water inlet 38, the water inlet 38 is communicated with the inner cavity of the tank body 5, and the water outlet 35 is communicated with the non-self-priming centrifugal pump 1 through a connecting pipeline 2. The check valve 3 is used for controlling the fluid to flow from the water inlet 38 to the water outlet 35 only, so as to prevent the gas which flows backwards from the water outlet 35 from entering the tank body 5 through the check valve 3 and destroying the vacuum degree of the vacuum water diversion tank.

As shown in fig. 4, the check valve 3 has a valve body fixedly mounted on the tank 5, and the valve body has a water inlet 38, a water outlet 35, and a fluid passage 36 communicating the water inlet 38 and the water outlet 35. And, a valve seat 37 is provided in the fluid passage 36, a valve plate 31 is hinge-fitted in the valve body through a hinge shaft extending horizontally, the valve plate 31 being adapted to be brought into sealing engagement with the valve seat 37 to control the flow of the fluid only from the water inlet 38 to the water outlet 35, and the valve plate 31 has a closing stroke swinging downward to be brought into sealing engagement with the valve seat to close the fluid passage 36 and an opening stroke swinging upward to be away from the valve seat to open the fluid passage 36 during the reciprocal swinging thereof about the hinge shaft.

In the present embodiment, the valve body of the check valve 3 is hermetically and fixedly assembled with the tank 5 by a flange connection structure. During specific assembly, usually can be welded and fixed with a flange section of thick bamboo on the jar body in advance, the one end that corresponds the water inlet of valve body sets up the flange joint board, and this flange joint board passes through fastening bolt fixed connection with a flange section of thick bamboo to realize the sealed fixed assembly of valve body and jar body.

In the embodiment shown in fig. 4, the valve body specifically includes a valve main body 30 and a valve top cover 33, the valve main body 30 extends horizontally and transversely as a whole, the water inlets 38 and the water outlets 35 on the valve main body are arranged at both horizontal and transverse ends of the valve main body 30 in a one-to-one correspondence, and the valve main body has a valve cavity, a part of which forms a fluid passage 36 for communicating the water inlets 38 and the water outlets 35.

The fluid passage 36 is provided with a valve seat 37 therein, the valve seat 37 extending vertically in particular, and the valve seat 37 is welded and fixed in the valve main body 30. The valve seat 37 has a sealing ring surface extending vertically upward and is an inclined surface arranged obliquely upward. The valve seat 37 at the closing position can be in an inclined posture by utilizing the inclined surface, the valve seat can be kept in the closing posture by conveniently utilizing the gravity of the valve seat 37, and the one-way sealing performance of the check valve is improved.

A mounting seat 32 is provided above a valve seat 37 in the valve body 30, a boom 34 is fixedly attached to the mounting seat 32, the entire boom 34 extends in the vertical direction, and the valve plate 31 is hinged to the lower end of the boom 34 by a hinge shaft. The hinge shaft here extends horizontally so that the valve plate 31 can reciprocally swing in the up-down direction about the hinge shaft.

As shown in fig. 4, the upper end of the suspension rod 34 has a connection section, the mounting seat 32 is provided with a through hole for the connection section of the suspension rod 34 to pass through, and the suspension rod 34 can be fixedly mounted on the mounting seat 32 by fastening a threaded fastener on the connection section. In a specific embodiment, an external thread can be provided on the connecting section, and the threaded fastener can be matched with a corresponding fastening nut. As another embodiment, an internally threaded hole may be provided at the top of the connecting section, and the screw fastener is a fastening screw, which is tightly fitted into the internally threaded hole, and the suspension rod may be also tightly mounted on the corresponding mounting seat.

In addition, to prevent rotation of the hanger bar 34, the fastening connector may be fixedly attached to the mounting block 32 directly by a welding process after the fastening assembly is completed.

The lower end of the boom 34 is hinge-fitted with the valve plate 31 through a hinge shaft so that the valve plate 31 can swing up and down about the hinge shaft. Both the hanger bar 34 and the valve plate 31 are disposed in the valve chamber, and in order to facilitate mounting of the hanger bar 34 and the valve plate 31 in the valve chamber, a mounting opening is provided at the top of the valve main body 30, and at the same time, a valve head 33 is detachably mounted at the mounting opening of the valve main body by fastening bolts.

In the present embodiment, the upper end of the valve plate 31 is hinge-fitted with the lower end of the hanger bar 34. Specifically, as shown in fig. 4, the valve plate 31 includes a seal plate main body 312 and an oscillating rod 311, and the seal plate main body 312 and the oscillating rod 311 are detachably fixed and assembled together. Wherein the sealing plate body 312 is used for sealing and matching with the sealing ring surface of the valve seat 37 to block the fluid passage 36, and the swinging rod 311 is used for being hinged and assembled with the lower end of the suspender 34 through a hinging shaft. When the seal plate main body 312 is damaged, the seal plate main body can be replaced alone without replacing the oscillating lever at the same time, so that the maintenance cost can be reduced.

In addition, in fig. 4, in order to prevent the valve plate 31 from being damaged due to the collision of the sealing plate main body 312 with the valve body caused by the upward transitional overturn, a limit stopper 39 is further disposed in the valve main body, and the limit stopper 39 is configured to be in one-way stop fit with the swinging rod 311 to limit the opening angle of the valve plate 31 when the swinging rod 311 swings upward with the sealing plate main body 312 to a set position, which is the stop fit position of the swinging rod 311 and the limit stopper 39 as shown by the dotted line in fig. 4, and this position is also the end position of the opening stroke of the valve plate 31.

When the water pumping device provided by the embodiment is used, water is injected into the tank body 5 by the water injection pipeline 6, after the tank body 5 is filled, the non-self-suction centrifugal pump 1 is started to pump water, and the valve plate 31 swings to open the fluid channel 36. In the process that the non-self-priming centrifugal pump 1 continuously pumps water, the water level in the tank body 5 gradually decreases, so that a certain vacuum degree is formed in the tank body 5, when the vacuum degree reaches a set requirement, a negative pressure environment can be formed in the tank body, and then the external water body is sucked into the tank body through the water inlet connector 9 and the corresponding pipeline, so that timely water supplement is formed, and continuous water pumping operation of the non-self-priming centrifugal pump is guaranteed.

When the non-self-priming centrifugal pump 1 is suspended, the air pressure in the tank body 5 is lower than the pump end, the vacuum water diversion tank 4 sucks back to force the valve plate 31 to be automatically closed, the fluid channel 36 is closed to form effective sealing, and at the moment, even if external air enters through a sealing failure position on the non-self-priming centrifugal pump 1, the external air cannot flow back into the tank body, so that the vacuum degree in the vacuum water diversion tank is maintained. When the non-self-suction centrifugal pump 1 is started next time, water injection operation is not needed again, the vacuum water diversion tank can continuously supply water to the non-self-suction centrifugal pump, the non-self-suction centrifugal pump can continuously and stably operate for a long time, and the condition of evacuation is avoided.

Embodiment 2 of the suction water pumping device provided by the present invention:

the difference from example 1 is mainly that: in embodiment 1, the check valve uses a valve plate as a one-way valve core to control the fluid to flow from the water inlet to the water outlet of the check valve only.

In the present embodiment, the check valve may also be implemented by other types of check valve cartridges, such as a cylindrical valve cartridge. Those skilled in the art can select different types of valve cores according to actual needs, as long as one-way through-flow control is satisfied.

Embodiment 3 of the suction water pumping device provided by the present invention:

the difference from example 1 is mainly that: in embodiment 1, the water inlet and the water outlet of the valve body are correspondingly located at the horizontal two ends of the valve main body, and the sealing ring surface of the valve seat vertically extends up and down, so that the valve plate at the closed position is also arranged up and down.

In this embodiment, when the delivery port of valve body was located the top of valve body, the sealed anchor ring of disk seat can be arranged along the horizontal plane, and at this moment, the valve plate that is in the closed position also can be arranged along the horizontal plane, and the assurance valve plate can with sealed the effective of anchor ring.

Embodiment 4 of the suction water pumping apparatus provided by the present invention:

the difference from example 1 is mainly that: in the embodiment 1, a suspension rod is fixedly arranged in the valve body, and the valve plate is hinged and assembled by a guide rod.

In this embodiment, the inner cavity wall of the valve body is directly provided with a hinge seat in a protruding manner, and the valve plate is directly assembled on the valve body in a hinge manner through a hinge shaft extending horizontally.

Embodiment 5 of the suction water pumping device provided by the present invention:

the difference from example 1 is mainly that: the valve plate comprises a sealing plate main body and a swinging rod which are detachably assembled together, and the installation mode is convenient for maintenance and replacement of single parts.

In this embodiment, the valve plate may also be an integrated structure, and a sealing ring is disposed on a side surface of the valve plate facing the valve seat to achieve a sealing engagement with the sealing ring surface. At the moment, two hinged assembling holes can be directly machined and formed by a drilling machine at the upper end of the valve plate, and normal assembly of the hinged shaft is guaranteed.

The structure of the vacuum water diversion tank provided by the second aspect of the present invention may adopt any one of the vacuum water diversion tanks in the above embodiments of the water pumping device, and details thereof are not repeated herein.

When the vacuum water diversion tank provided by the utility model is used in combination with a non-self-suction centrifugal pump, the continuous normal work of the non-self-suction centrifugal pump can be effectively ensured. Simultaneously, overall structure is simple, also is convenient for directly reform transform on current vacuum diversion jar, is fit for direct application in the production reality.

In light of the foregoing description of the present specification, those skilled in the art will also understand that terms used to indicate orientation or positional relationship, such as "upper", "lower", "vertical", "horizontal", "central" and "lateral", etc., are based on the orientation or positional relationship shown in the drawings of the present specification, which are used for the purpose of convenience of illustrating the aspects of the present invention and simplifying the description, and do not explicitly or implicitly indicate that the device or element involved must have the specific orientation, be constructed and operated in the specific orientation, and thus, the above-mentioned orientation or positional relationship terms should not be interpreted or construed as limiting the aspects of the present invention.

Additionally, while various embodiments of the present invention have been shown and described herein, it will be obvious to those skilled in the art that such embodiments are provided by way of example only. Numerous modifications, changes, and substitutions will occur to those skilled in the art without departing from the spirit and scope of the present invention. It should be understood that various alternatives to the embodiments of the utility model described herein may be employed in practicing the utility model. It is intended that the following claims define the scope of the utility model and that the module compositions, equivalents, or alternatives falling within the scope of these claims be covered thereby.

Claims (10)

1. The utility model provides a vacuum diversion jar, includes jar body, its characterized in that: the water outlet control valve is a check valve used for controlling fluid to flow to the water outlet only from the water inlet, so that gas flowing backwards from the water outlet is prevented from entering the tank body through the check valve to destroy the vacuum degree of the vacuum water tank.

2. The vacuum diversion tank of claim 1, wherein said check valve has a valve body fixed on said tank body, said valve body having said water inlet, said water outlet and a fluid passage communicating said water inlet and said water outlet, said fluid passage having a valve seat therein, said valve body having a valve plate hingedly mounted therein by a horizontally extending hinge shaft for sealing engagement with said valve seat to control fluid flow only from said water inlet to said water outlet, said valve plate having a closing stroke swinging downwardly for sealing engagement with said valve seat to close said fluid passage during reciprocal swinging movement thereof about said hinge shaft and an opening stroke swinging upwardly away from said valve seat to open said fluid passage.

3. The vacuum diversion tank of claim 2, wherein said valve seat has a sealing ring surface extending vertically up and down and arranged obliquely upward.

4. The vacuum diversion tank of claim 3, wherein a suspension rod extending in an up-down direction is fixedly installed in said valve body, and an upper end of said valve plate is hinge-fitted to said suspension rod through said hinge shaft.

5. The vacuum diversion tank of claim 4, wherein said boom has a connection section at an upper end thereof, a mounting seat for said connection section to pass through is provided in said valve body, and a threaded fastener for fixedly mounting said boom on said mounting seat is fixedly fitted on said connection section.

6. The vacuum diversion tank as claimed in claim 4, wherein said valve body comprises a valve body having said water inlet, said water outlet and a valve chamber communicating said water inlet and said water outlet, said valve chamber forming said fluid passage, said hanger rod and said valve plate being mounted in said valve chamber, said valve body being provided at a top thereof with a mounting opening for mounting said valve plate in said valve chamber, said valve body being detachably mounted with a valve top cover at said mounting opening.

7. The vacuum diversion tank as claimed in any one of claims 2 to 6, wherein said valve plate comprises a sealing plate body and an oscillating rod, which are detachably and fixedly assembled together, said sealing plate body being adapted to be in sealing engagement with said valve seat, said oscillating rod being hingedly assembled in said valve body through said hinge shaft.

8. The vacuum diversion tank as claimed in claim 7, wherein a limit stop is provided in said valve body for one-way stop-cooperating with said oscillating rod to limit the opening angle of said valve plate when said oscillating rod carries said sealing plate main body to swing upward to a set position.

9. The vacuum diversion tank as claimed in any one of claims 2 to 6, wherein: the valve body is fixedly assembled with the tank body in a sealing way through a flange connecting structure.

10. A kind of suction water pumping device, characterized by: the method comprises the following steps:

a non-self-priming centrifugal pump having a water inlet; and

the vacuum diversion tank of any one of claims 1 to 9, a water outlet of a water outlet check valve of the vacuum diversion tank is connected with a water inlet of the non-self-priming centrifugal pump through a connecting pipeline.

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