Jet pump with pressure reducing valve

Abstract

The utility model provides an injection pump with a pressure reducing valve, and belongs to the technical field of water pumps. The problem that an injection pump in the prior art is overloaded is solved. The pump comprises a motor and a pump body, the motor is connected with the pump body, one side of the pump body is fixedly connected with an output pump cover, a first connecting port is integrally formed in the upper end of the pump body, a second connecting port is integrally formed in the upper end of the output pump cover, and a pressure reducing valve assembly is fixedly connected to the upper ends of the pump body and the output pump cover. The pressure reducing valve assembly comprises a pressure reducing valve sleeve, an adjuster, a pressure reducing valve spring and a stop dog, a first connecting foot and a second connecting foot are integrally formed at the bottom of the pressure reducing valve sleeve and connected with the first connecting port and the second connecting port respectively, and the stop dog is connected with the pressure reducing valve spring. The stop dog and the pressure reducing valve spring are installed in the pressure reducing valve sleeve, the regulator is connected with one end of the pressure reducing valve sleeve, and an injection opening is formed in the output pump cover. The utility model has the advantages that the flow is increased, and overload is prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of water pumps and relates to a jet pump with a pressure reducing valve. Background Art

[0002] A jet pump is a fluid power pump that has no mechanical transmission or mechanical working components. It uses the energy of another working fluid as a power source to transport low-energy liquids.

[0003] A Chinese patent with publication number CN206582184U discloses a jet pump, comprising a pump body and an ejector connected to the pump body, the ejector comprising a shell and a nozzle, the shell being provided with a water inlet and a water outlet, a return water channel being provided inside the shell, a return water inlet and a return water outlet being provided on the return water channel, the return water outlet and the water inlet being intersected at the water outlet, the nozzle being threadedly connected at the return water outlet, a limiting groove being provided on the outer side wall of the nozzle, an elastic member and a telescopic member being provided on the side wall of the return water outlet, the elastic member applying elastic force to the telescopic member and the telescopic member being able to be engaged in the limiting groove, the telescopic member comprising a receiving groove provided on the side wall of the return water outlet, a limiting block slidably connected inside the receiving groove, and an elastic member provided in the receiving groove, the outer side wall of the nozzle being fitted with the inner side wall of the return water outlet, and the diameter of the return water outlet close to the water outlet being larger than the diameter of the return water outlet away from the water outlet.

[0004] The jet pump provided by this patent lacks a pressure reducing valve assembly, which may cause overload and other phenomena during use, thus affecting the working efficiency of the jet pump. Utility Model Content

[0005] The utility model aims to provide a jet pump with a pressure reducing valve in view of the above problems existing in the prior art.

[0006] The purpose of the utility model can be achieved through the following technical solutions: a jet pump with a pressure reducing valve, comprising a motor and a pump body, the motor and the pump body are connected, an output pump cover is fixedly connected to one side of the pump body, a first connecting port is integrally formed on the upper end of the pump body, a second connecting port is integrally formed on the upper end of the output pump cover, a pressure reducing valve assembly is fixedly connected to the upper ends of the pump body and the output pump cover, the pressure reducing valve assembly comprises a pressure reducing valve sleeve, a regulator, a pressure reducing valve spring and a stopper, a first connecting foot and a second connecting foot are integrally formed at the bottom of the pressure reducing valve sleeve, the first connecting foot and the second connecting foot are respectively connected to the first connecting port and the second connecting port, the stopper is connected to the pressure reducing valve spring, the stopper and the pressure reducing valve spring are installed inside the pressure reducing valve sleeve, the regulator is connected to one end of the pressure reducing valve sleeve, and an injection port is formed on the output pump cover.

[0007] In the above-mentioned jet pump with a pressure reducing valve, a plurality of connecting protrusions are formed on the pump body, and a plurality of connecting plates are formed on the output pump cover. The number of the connecting plates is the same as the number of the connecting protrusions. The connecting protrusions and the connecting plates are fixedly connected by fixing bolts.

[0008] In the above-mentioned jet pump with a pressure reducing valve, a bypass pipe is formed on one side of the pump body, and the bypass pipe is connected with the interior of the pump body.

[0009] In the above-mentioned jet pump with a pressure reducing valve, a pump shaft is fixedly installed inside the pump body, a motor shaft extends out of the motor, the pump shaft extends out of the pump body and is connected to the motor shaft, and a connecting gear is fixedly mounted at the connection between the pump shaft and the motor shaft.

[0010] In the above-mentioned jet pump with a pressure reducing valve, a shaft support and an impeller are installed inside the pump body, and the shaft support and the impeller are sleeved on the pump shaft.

[0011] Compared with the prior art, the utility model provides a jet pump with a pressure reducing valve, which has the following beneficial effects: by arranging a pressure reducing valve assembly at the upper ends of the pump body and the output pump cover, the flow rate inside the pump body is effectively increased and the occurrence of overload inside the pump body is prevented, and the first connecting pin and the second connecting pin of the pressure reducing valve sleeve are respectively connected to the first connecting port on the pump body and the second connecting port on the output pump cover, so that the utility model has better integrity, stable structure and longer service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the explosion structure of the utility model;

[0014] Figure 3 It is a schematic diagram of the exploded structure of the pressure relief valve assembly;

[0015] Figure 4 yes Figure 1 Enlarged structural diagram at A in the middle.

[0016] In the figure: 1. motor; 11. motor shaft; 2. pump body; 21. first connection port; 22. connecting protrusion; 23. bypass pipe; 24. pump shaft; 25. shaft bracket; 26. impeller; 3. output pump cover; 31. second connection port; 32. injection port; 33. connecting plate; 4. pressure reducing valve assembly; 41. pressure reducing valve sleeve; 411. first connecting pin; 412. second connecting pin; 42. regulator; 43. pressure reducing valve spring; 44. stopper; 5. fastening bolt; 6. connecting gear. DETAILED DESCRIPTION

[0017] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0018] like Figures 1 to 4 As shown, this embodiment includes a motor 1, a pump body 2, an output pump cover 3 and a pressure reducing valve assembly 4, the motor 1 is connected to the pump body 2, a pump shaft 24 is fixedly installed inside the pump body 2, a shaft support 25 and an impeller 26 are both installed inside the pump body 2 and the shaft support 25 and the impeller 26 are sleeved and fixed on the pump shaft 24, the output pump cover 3 is fixedly connected to one side of the output end of the pump body 2, an injection port 32 is formed on the output pump cover 3, a first connecting port 21 is integrally formed at the upper end of the pump body 2, a second connecting port 31 is integrally formed at the upper end of the output pump cover 3, and the pressure reducing valve assembly 4 includes a pressure reducing valve sleeve 41, a regulator 42, and a pressure reducing valve spring 43. and a stopper 44, a first connecting foot 411 and a second connecting foot 412 are integrally formed at the bottom of the pressure reducing valve sleeve 41, the first connecting foot 411 and the second connecting foot 412 are respectively connected to the first connecting port 21 and the second connecting port 31, so that the pressure reducing valve sleeve 41 is connected to the pump body 2 and the output pump cover 3, the stopper 44 and the pressure reducing valve spring 43 are installed inside the pressure reducing valve sleeve 41 and the stopper 44 is connected to the pressure reducing valve spring 43, the regulator 42 is connected to one end of the pressure reducing valve sleeve 41, the pressure reducing valve assembly 4 is connected to the pump body 2 and the output pump cover 3, and the pressure reducing valve plays a role in increasing the flow and preventing overload.

[0019] To elaborate further, Figure 1 As shown, three connecting protrusions 22 are welded and fixed on the pump body 2, and three connecting plates 33 are welded and fixed on the output pump cover 3. The positions of the connecting plates 33 and the connecting protrusions 22 match each other, and the connecting protrusions 22 and the connecting plates 33 are fixedly connected by fastening bolts 5.

[0020] To elaborate further, Figure 1 to Figure 2 As shown, a bypass pipe 23 is formed on one side of the pump body 2. The bypass pipe 23 is connected to the inside of the pump body 2. The bypass pipe 23 can be used to connect an external hose.

[0021] To elaborate further, Figure 4 As shown, the motor 1 has a motor shaft 11 extending out, the pump shaft 24 extends out of the pump body 2 and is sleeved on the outside of the motor shaft 11 to connect the pump shaft 24 and the motor shaft 11, and a connecting gear 6 is fixed at the connection between the pump shaft 24 and the motor shaft 11, the connecting gear 6 extends into the pump shaft 24 and is sleeved on the outside of the motor shaft 11, and the connecting gear 6 ensures the connection stability between the motor shaft 11 and the pump shaft 24.

[0022] The specific embodiments described herein are merely examples of the spirit of the present invention. A person skilled in the art of the present invention may make various modifications or additions to the specific embodiments described or replace them in a similar manner, but this will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0023] Although various terms are used more frequently in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A jet pump with a pressure reducing valve, comprising a motor (1) and a pump body (2), wherein the motor (1) and the pump body (2) are connected, and an output pump cover (3) is fixedly connected to one side of the pump body (2), characterized in that: The upper end of the pump body (2) is integrally formed with a first connection port (21), the upper end of the output pump cover (3) is integrally formed with a second connection port (31), the upper ends of the pump body (2) and the output pump cover (3) are fixedly connected with a pressure reducing valve assembly (4), the pressure reducing valve assembly (4) comprising a pressure reducing valve sleeve (41), a regulator (42), a pressure reducing valve spring (43) and a stopper (44), the bottom of the pressure reducing valve sleeve (41) is integrally formed with a first connection foot (411) and a second connection foot (412). The first connecting foot (411) and the second connecting foot (412) are respectively connected to the first connecting port (21) and the second connecting port (31); the stopper (44) is connected to the pressure reducing valve spring (43); the stopper (44) and the pressure reducing valve spring (43) are installed inside the pressure reducing valve sleeve (41); the regulator (42) is connected to one end of the pressure reducing valve sleeve (41); and an injection port (32) is formed on the output pump cover (3).

2. A jet pump with a pressure reducing valve according to claim 1, characterized in that: The pump body (2) is formed with a plurality of connecting protrusions (22), the output pump cover (3) is formed with a plurality of connecting plates (33), the number of the connecting plates (33) is the same as the number of the connecting protrusions (22), and the connecting protrusions (22) and the connecting plates (33) are fixedly connected by means of fixing bolts (5).

3. The jet pump with a pressure reducing valve according to claim 1, characterized in that: A bypass pipe (23) is formed on one side of the pump body (2), and the bypass pipe (23) is connected to the interior of the pump body (2).

4. The jet pump with a pressure reducing valve according to claim 1, characterized in that: A pump shaft (24) is fixedly mounted inside the pump body (2); a motor shaft (11) extends out of the motor (1); the pump shaft (24) extends out of the pump body (2) and is connected to the motor shaft (11); a connecting gear (6) is sleeved and fixed at the connection between the pump shaft (24) and the motor shaft (11).

5. A jet pump with a pressure reducing valve according to claim 1 or 4, characterized in that: A shaft support (25) and an impeller (26) are installed inside the pump body (2), and the shaft support (25) and the impeller (26) are sleeved on the pump shaft (24).

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