CN219101613U - Exhaust structure of a centrifugal pump - Google Patents

Abstract

The utility model discloses an exhaust structure of a centrifugal pump, relates to the technical field of centrifugal pumps, and comprises a base, a pump body is installed on the top of the base, and a water outlet, a water inlet and a drain Air port, the bottom end of the exhaust port is connected with a pump filling pipe extending to the inside of the pump body, and a water tank is installed on one side of the exhaust port, the outer wall of the water tank is connected with a suction pipe through a one-way valve, and the water tank The inner wall of the tank is slidingly connected with a piston, the end of the piston is fixedly connected with a piston rod, and the end of the piston rod is fixedly connected with a pull rod, and the side of the water tank is connected with a drain extending to the inside of the exhaust port through a one-way valve. Tube. The utility model is equipped with a water tank, a water suction pipe, a drain pipe, a piston, a piston rod and a pull rod, and can complete the pump filling operation for the pump body without external water pipes.

Description

Exhaust structure of a centrifugal pump

technical field

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

Background technique

A centrifugal pump refers to a pump that delivers liquid by the centrifugal force generated when the impeller rotates. If the casing of the centrifugal pump is filled with gas before starting, the center of the impeller cannot form a sufficient vacuum there when the gas is thrown after starting. In this way, the liquid in the tank cannot be sucked up, and this phenomenon is called air binding.

In order to prevent the occurrence of gas binding, the centrifugal pump needs to fill the inner space of the pump casing with external liquid before starting. This step is called filling the pump. The existing centrifugal pumps are usually operated by manual external water pipes, which is complicated to operate and waste time.

Utility model content

Based on this, the purpose of this utility model is 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 utility model provides the following technical solutions: a centrifugal pump exhaust structure, including a base, the top of the base is installed with a pump body, and one side of the pump body is provided with a water outlet and a water inlet And the exhaust port, the bottom end of the exhaust port is connected with a pump filling pipe extending to the inside of the pump body, and a water tank is installed on one side of the exhaust port, and the outer wall of the water tank is connected with a water suction pipe through a one-way valve. And the inner wall of the water tank is slidingly connected with a piston, the end of the piston is fixedly connected with a piston rod, and the end of the piston rod is fixedly connected with a pull rod, and the side of the water tank is connected with a valve extending to the inside of the exhaust port through a one-way valve. drain pipe.

By adopting the above technical solution, the pump filling operation for the pump body can be completed without external connection of water pipes, and the operation is simple, convenient and fast, which is conducive to improving the working efficiency of the centrifugal pump.

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

By adopting the above technical solution, the effect of assisting exhaust gas is achieved.

The utility model is further configured that a magnifying lens is installed at the top end of the exhaust port.

By adopting the above technical solution, the effect of assisting the observation of bubbles is achieved.

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

By adopting the above technical scheme, the effect of absorbing water feed is achieved.

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

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

In summary, the utility model mainly has the following beneficial effects:

1. The utility model is provided with a water tank, a water suction pipe, a drain pipe, a piston, a piston rod and a pull rod. Before starting the centrifugal pump, the piston rod is pulled by the pull rod so that the piston rod drives the piston to move. After the piston moves, a negative load will be generated in the water tank. At this time, the water suction pipe will absorb water flow from the water inlet pipe. When the piston moves to the outermost side, the water tank is just filled with water flow, and then the pull rod is pushed. Under the action of the pull rod, the piston rod will push the piston to squeeze the water flow, so that the water flow through the drain The pipe is discharged into the priming pipe, at this time, the water flow will flow into the pump body to prime the pump, and the gas in the pump body will be squeezed out to achieve the exhaust effect of the pump body;

2. The utility model is equipped with a magnifying lens and an exhaust valve. When the pumping operation is in progress, the gas will form bubbles in the water and flow upward, and finally be discharged through the exhaust valve. At the same time, the operator can observe the pump through the magnifying lens. If there are no bubbles in the pump body, it means that the gas in the pump body has been emptied, and the centrifugal pump can be turned on to assist in observation.

Description of drawings

Fig. 1 is the overall structural representation of the utility model;

Fig. 2 is a structural schematic diagram of the irrigation pump of the present utility model;

Fig. 3 is a schematic diagram of the structure of the exhaust port of the present invention.

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

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model, but should not be construed as limiting the present utility model.

Below according to the overall structure of the utility model, its embodiment is described.

An exhaust structure of a centrifugal pump, as shown in Figure 1-3, includes a base 1, a pump body 2 is installed on the top of the base 1, and one side of the pump body 2 is provided with a water outlet 3, a water inlet 4 and Exhaust port 5, the top end of exhaust port 5 is equipped with magnifying lens 14, and magnifying lens 14 can assist personnel to observe whether there is air bubble to produce in pump body 2, and then is convenient to judge whether pump body 2 internal gas is exhausted, and the exhaust port There is an exhaust valve 13 on the side wall of the pump body 2. The gas inside the pump body 2 will generate bubbles under the action of the water flow and be discharged upwards, and finally discharged through the exhaust valve 13. The bottom end of the exhaust port 5 is connected to a valve extending to the pump body 2 The inner pumping pipe 6, and a water tank 7 is installed on one side of the exhaust port 5, the outer wall of the water tank 7 is connected to the water suction pipe 8 through a one-way valve, and the inner wall of the water tank 7 is slidingly connected to the piston 9, and the end of the piston 9 A piston rod 10 is fixedly connected to the top of the piston rod 10, and a pull rod 11 is fixedly connected to the end of the piston rod 10. The side of the water tank 7 is connected with a drain pipe 12 extending to the inside of the exhaust port 5 through a check valve.

Please refer to Fig. 1-2, the other end of the water suction pipe 8 communicates with the water inlet pipe, so that the water suction pipe 8 can suck water flow through the water inlet pipe, so that the water tank 7 can be filled with water flow for priming the pump.

Please refer to FIG. 2 , a shaft seal is provided at the joint between the piston rod 10 and the water tank 7 to achieve a sealing effect on the joint between the piston rod 10 and the water tank 7 and prevent water leakage.

The working principle of the utility model is: before starting the centrifugal pump, pull the piston rod 10 through the pull rod 11, so that the piston rod 10 drives the piston 9 to move. It will draw water flow from the water inlet pipe. When the piston 9 moves to the outermost side, the water tank 7 is just filled with water flow, and then the pull rod 11 is pushed. Under the action of the pull rod 11, the piston rod 10 will push the piston 9 to squeeze the water flow, so that the water flow passes through the drain pipe. 12 is discharged into the pump filling pipe 6. At this time, the water flow will flow into the pump body 2 to prime the pump, and the gas in the pump body 2 will be squeezed out to realize the exhaust effect of the pump body 2;

When the pump filling operation is in progress, the gas will form bubbles in the water and flow upward, and finally be discharged through the exhaust valve 13. At the same time, the operator can observe the generation of bubbles in the pump body 2 through the magnifying lens 14. If the pump body 2 If there is no bubble in the middle, it means that the gas in the pump body 2 is exhausted, and the centrifugal pump can be started to run.

Although the embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model, and it is not a limitation of the utility model, and the specific features, structures, materials or characteristics described can be used in any Or multiple embodiments or examples are combined in a suitable manner, and those skilled in the art can make no creative contributions to the embodiments as required without departing from the principle and purpose of the utility model after reading this specification Amendments, replacements and variations, etc., but as long as they are within the scope of the claims of the utility model, they are all protected by the patent law.

Claims (5)

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).

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