CN219101613U

CN219101613U - Exhaust structure of centrifugal pump

Info

Publication number: CN219101613U
Application number: CN202223582714.7U
Authority: CN
Inventors: 赵周天
Original assignee: Suzhou Jiana Fluid Technology Co ltd
Current assignee: Suzhou Jiana Fluid Technology Co ltd
Priority date: 2022-12-31
Filing date: 2022-12-31
Publication date: 2023-05-30
Anticipated expiration: 2032-12-31

Abstract

The utility model discloses an exhaust structure of a centrifugal pump, which relates to the technical field of centrifugal pumps and comprises a base, wherein a pump body is arranged at the top end of the base, a water outlet, a water inlet and an exhaust port are formed in one side of the pump body, a pump filling pipe extending into the pump body is connected to the bottom end of the exhaust port, a water tank is arranged on one side of the exhaust port, a water suction pipe is connected to the outer wall of the water tank through a one-way valve, a piston is connected to the inner wall of the water tank in a sliding manner, a piston rod is fixedly connected to the end part of the piston, a pull rod is fixedly connected to the end part of the piston rod, and a drain pipe extending into the exhaust port is connected to the side part of the water tank through the one-way valve. According to the utility model, the water tank, the water suction pipe, the drain pipe, the piston rod and the pull rod are arranged, so that the pumping operation of the pump body can be completed without an external water pipe, the operation is simple, convenient and quick, and the work efficiency of the centrifugal pump is improved.

Description

Exhaust structure of centrifugal pump

Technical Field

The utility model relates to the technical field of centrifugal pumps, in particular to an exhaust structure of a centrifugal pump.

Background

The centrifugal pump is a pump for conveying liquid by centrifugal force generated when the impeller rotates, if the centrifugal pump is filled with gas in the shell before starting, the gas in the center of the impeller cannot form a large enough vacuum degree at the position when the gas is thrown after starting, so that the liquid in the groove cannot be sucked up, and the phenomenon is called gas binding.

In order to prevent the occurrence of the air-binding phenomenon, the space in the pump shell is filled with external liquid before the centrifugal pump is started, the step becomes pumping, the conventional centrifugal pump is usually operated by an artificial external water pipe, the operation is complex, and the time is consumed.

Disclosure of Invention

Based on this, it is an object of the present utility model to provide an exhaust structure of a centrifugal pump to solve the technical problems mentioned in the background above.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an exhaust structure of centrifugal pump, includes the base, the pump body is installed on the top of base, and one side of the pump body has seted up delivery port, water inlet and gas vent, the bottom of gas vent is connected with and extends to the pump pipe of the inside of the pump body, and one side of gas vent installs the water tank, the outer wall of water tank is connected with the water pipe that absorbs water through the check valve, and the inner wall sliding connection of water tank has the piston, the tip fixedly connected with piston rod of piston, and the tip fixedly connected with pull rod of piston rod, the lateral part of water tank is connected with the drain pipe that extends to the gas vent inside through the check valve.

Through adopting above-mentioned technical scheme, need not external water pipe and can accomplish the pump operation of irritating to the pump body, easy operation, convenient and fast are favorable to promoting centrifugal pump's work efficiency.

The utility model is further arranged that the side wall of the exhaust port is provided with an exhaust valve.

By adopting the technical scheme, the auxiliary exhaust effect is achieved.

The utility model is further arranged that the top end of the exhaust port is provided with a magnifying lens.

By adopting the technical scheme, the effect of assisting in observing bubbles is achieved.

The utility model is further arranged that the other end of the water suction pipe is communicated with the water inlet pipe.

By adopting the technical scheme, the water-absorbing feeding effect is achieved.

The utility model is further provided that a shaft seal is arranged at the joint of the piston rod and the water tank.

By adopting the technical scheme, the sealing effect on the water tank is achieved.

In summary, the utility model has the following advantages:

1. according to the utility model, the water tank, the water suction pipe, the drain pipe, the piston rod and the pull rod are arranged, before the centrifugal pump is started, the piston rod is pulled by the pull rod, so that the piston rod drives the piston to move, negative pressure is generated in the water tank after the piston moves, the water suction pipe can suck water flow from the water inlet pipe, the water tank is just full of water flow when the piston moves to the outermost side, then the pull rod is pushed, the piston rod can push the piston to squeeze the water flow under the action of the pull rod, so that the water flow is discharged into the pump filling pipe through the drain pipe, and at the moment, the water flow can flow into the pump body for pumping, and gas in the pump body is extruded and discharged, so that the exhaust effect of the pump body is realized;

2. according to the utility model, by arranging the amplifying lens and the exhaust valve, when the pumping operation is performed, air bubbles are formed in water and flow upwards, and finally the air bubbles are exhausted through the exhaust valve, meanwhile, an operator can observe the generation condition of the air bubbles in the pump body through the amplifying lens, if no air bubbles are generated in the pump body, the air in the pump body is exhausted, and the centrifugal pump can be started to operate, so that the auxiliary observation effect is achieved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic diagram of the pump priming structure of the present utility model;

fig. 3 is a schematic view of the structure of the exhaust port of the present utility model.

In the figure: 1. a base; 2. a pump body; 3. a water outlet; 4. a water inlet; 5. an exhaust port; 6. a pump filling pipe; 7. a water tank; 8. a water suction pipe; 9. a piston; 10. a piston rod; 11. a pull rod; 12. a drain pipe; 13. an exhaust valve; 14. magnifying lenses.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

Hereinafter, an embodiment of the present utility model will be described in accordance with its entire structure.

1-3, including base 1, pump body 2 is installed on the top of base 1, and delivery port 3 is offered to one side of pump body 2, water inlet 4 and gas vent 5, amplification lens 14 is installed to the top tip of gas vent 5, amplification lens 14 can assist personnel to observe whether there is the bubble to produce in the pump body 2, and then be convenient for judge whether the inside gas of pump body 2 empties, discharge valve 13 has been offered to the lateral wall of gas vent 5, the inside gas of pump body 2 can produce the bubble and upwards discharge under rivers effect, and finally discharge through discharge valve 13, the bottom of gas vent 5 is connected with the lavage tube 6 that extends to the inside of pump body 2, and water tank 7 is installed to one side of gas vent 5, the outer wall of water tank 7 is connected with the water suction pipe 8 through the check valve, and the inner wall sliding connection of water tank 7 has piston 9, the end fixedly connected with piston rod 10 of piston rod 10, and the tip fixedly connected with pull rod 11 of piston rod 7's lateral part is connected with drain pipe 12 that extends to the inside of gas vent 5 through the check valve.

Referring to fig. 1-2, the other end of the water suction pipe 8 is communicated with the water inlet pipe, so that the water suction pipe 8 can suck water flow through the water inlet pipe, and the water tank 7 can be filled with water flow for pumping.

Referring to fig. 2, a shaft seal is disposed at the connection between the piston rod 10 and the water tank 7, so as to achieve a sealing effect on the connection between the piston rod 10 and the water tank 7, and prevent water leakage.

The working principle of the utility model is as follows: before the centrifugal pump is started, the piston rod 10 is pulled by the pull rod 11, so that the piston rod 10 drives the piston 9 to move, negative pressure is generated in the water tank 7 after the piston 9 moves, at the moment, the water suction pipe 8 sucks water flow from the water inlet pipe, when the piston 9 moves to the outermost side, the water tank 7 is just full of water flow, then the pull rod 11 is pushed, the piston rod 10 pushes the piston 9 to squeeze the water flow under the action of the pull rod 11, so that the water flow is discharged into the pump filling pipe 6 through the water discharge pipe 12, at the moment, the water flow flows into the pump body 2 for pump filling, and gas in the pump body 2 is squeezed and discharged, so that the exhaust effect on the pump body 2 is realized;

when the pumping operation is performed, air bubbles are formed in water and flow upwards, and finally the air bubbles are discharged through the exhaust valve 13, meanwhile, an operator can observe the generation condition of the air bubbles in the pump body 2 through the amplifying lens 14, if no air bubbles are generated in the pump body 2, the air in the pump body 2 is exhausted, and the centrifugal pump can be started to operate.

Although embodiments of the utility model have been shown and described, the detailed description is to be construed as exemplary only and is not limiting of the utility model as the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples, and modifications, substitutions, variations, etc. may be made in the embodiments as desired by those skilled in the art without departing from the principles and spirit of the utility model, provided that such modifications are within the scope of the appended claims.

Claims

1. An exhaust structure of a centrifugal pump, comprising a base (1), characterized in that: the pump body (2) is installed on the top of base (1), and delivery port (3), water inlet (4) and gas vent (5) have been seted up to one side of pump body (2), the bottom of gas vent (5) is connected with and extends to pump filling pipe (6) inside pump body (2), and one side of gas vent (5) is installed water tank (7), the outer wall of water tank (7) is connected with water suction pipe (8) through the check valve, and the inner wall sliding connection of water tank (7) has piston (9), the end fixedly connected with piston rod (10) of piston (9), and the end fixedly connected with pull rod (11) of piston rod (10), the lateral part of water tank (7) is connected with drain pipe (12) that extend to gas vent (5) inside through the check valve.

2. The exhaust structure of a centrifugal pump according to claim 1, wherein: an exhaust valve (13) is arranged on the side wall of the exhaust port (5).

3. The exhaust structure of a centrifugal pump according to claim 1, wherein: an amplifying lens (14) is arranged at the top end part of the exhaust port (5).

4. The exhaust structure of a centrifugal pump according to claim 1, wherein: the other end of the water suction pipe (8) is communicated with the water inlet pipe.

5. The exhaust structure of a centrifugal pump according to claim 1, wherein: a shaft seal is arranged at the joint of the piston rod (10) and the water tank (7).