CN216407194U

CN216407194U - Pump cavity structure and vertical pump

Info

Publication number: CN216407194U
Application number: CN202122410194.0U
Authority: CN
Inventors: 吴斌
Original assignee: Dongguan Chuang Sheng Machinery Equipment Co ltd
Current assignee: Dongguan Chuang Sheng Machinery Equipment Co ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-04-29
Anticipated expiration: 2031-09-30

Abstract

The utility model belongs to the technical field of vertical pumps, and particularly relates to a pump cavity structure and a vertical pump, wherein the pump cavity structure comprises a pump cover, an impeller, a pump main body, a flow guide block, a boss and a concave platform; the pump cover is fixedly arranged at the bottom of the pump main body, a water suction chamber is formed between the pump cover and the pump main body, the impeller is rotatably arranged in the water suction chamber, a circle of flow guide blocks are fixedly arranged at the upper part of the water suction chamber and are arranged along the circumferential direction of the impeller, and the flow guide blocks guide liquid thrown out by the impeller to a water outlet; the circle of bosses are fixedly arranged at the bottom of the impeller along the circumferential direction of the impeller; the upper end of pump cover and corresponding to the water inlet are located along the circumference of pump cover to the round concave station, and the boss stretches into the concave station. When liquid enters the impeller from the water inlet, the liquid flows to the water outlet under the action of centrifugal force, and the resistance provided by the cooperation of the backflow block, the boss and the concave platform accelerates the liquid to flow out of the water outlet, increases the force of aggregation in the water absorption chamber, and improves the working efficiency of the pump.

Description

Pump cavity structure and vertical pump

Technical Field

The utility model belongs to the technical field of vertical pumps, and particularly relates to a pump cavity structure and a vertical pump.

Background

Vertical pumps generally rely on the action of a rotating impeller on the fluid to transfer the mechanical energy of a prime mover to the fluid. The centrifugal pump has the advantages that the speed energy and the pressure energy of the liquid are increased in the process that the liquid flows from the inlet to the outlet of the impeller under the action of the centrifugal pump, most of the speed energy of the liquid discharged by the impeller passes through the extrusion chamber and is converted into pressure energy, the pressure energy is then conveyed out along the discharge pipeline, at the moment, vacuum or low pressure is formed at the inlet of the impeller due to the discharge of the liquid, the liquid in the water suction pool is pressed into the inlet of the impeller under the action of the liquid level pressure or the atmospheric pressure, and then the rotating impeller continuously sucks and discharges the liquid. However, the flow channel, the pump body, the pump cover and the impeller of the conventional vertical pump are used in a plane in a matching manner, and the design easily causes pressure loss in the pump cavity, thereby reducing the working efficiency of the pump.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a pump cavity structure and a vertical pump, and aims to solve the technical problem that the working efficiency of the pump is reduced due to pressure loss in the pump cavity of the vertical pump in the prior art.

In order to achieve the above object, an embodiment of the present invention provides a pump cavity structure, including a pump cover, an impeller, a pump main body, a flow guide block, a boss, and a concave platform, wherein a water inlet is disposed at a bottom end of the pump cover, and a water outlet is disposed at a side wall of the pump main body; the pump cover is fixedly arranged at the bottom of the pump main body, a water suction chamber is formed between the pump cover and the pump main body, the impeller is rotatably arranged in the water suction chamber, a circle of flow guide blocks are fixedly arranged at the upper part of the water suction chamber and are arranged along the circumferential direction of the impeller, and the flow guide blocks guide liquid thrown out by the impeller to the water outlet; the circle of bosses are fixedly arranged at the bottom of the impeller along the circumferential direction of the impeller; the circle of concave station is located along the circumference of pump cover the upper end of pump cover and correspond to the water inlet, the boss stretches into the concave station.

Preferably, a guide inclined plane is disposed along a lower peripheral edge of the guide block, the guide inclined plane corresponds to the impeller and has an inner peripheral edge and an outer peripheral edge, and the inner peripheral edge is obliquely connected to the outer peripheral edge upward to form the guide inclined plane.

Preferably, a circle of threaded sleeve is arranged along the upper periphery of the flow guide block and is in threaded connection with the side wall of the upper part of the water suction chamber.

Preferably, the pump cover has an inner peripheral sidewall, and the inner peripheral sidewall is provided with a flow guiding conical surface.

Preferably, a circle of groove is formed in the circumferential direction of the lower end face of the pump main body, a first sealing ring is arranged in the groove, and the first sealing ring is attached between the pump main body and the pump cover.

Preferably, the pump cover is screwed to the inner circumference of the lower end of the pump main body.

In order to achieve the above object, an embodiment of the present invention provides a vertical pump, including a motor and a pump shaft, wherein the motor is drivingly connected to the pump shaft; the pump cavity structure is further included, and the lower end of the pump shaft is in driving connection with the impeller.

Preferably, the pump shaft is sleeved with a shaft sleeve.

Preferably, the motor is fixed on a seat plate, a seal sleeve is arranged on the bottom surface of the seat plate, and the pump shaft penetrates through the seat plate and the seal sleeve; and a second sealing ring is arranged at the top of the shaft sleeve and is sealed between the sealing sleeve and the shaft sleeve.

Preferably, the vertical pump further comprises a supporting tube, the upper end of the supporting tube is fixedly connected with the seat plate, and the lower end of the supporting tube is fixedly connected with the pump main body.

One or more technical solutions in the vertical pump provided by the embodiment of the present invention have at least one of the following technical effects: when liquid enters the impeller from the water inlet, the liquid flows to the water outlet under the action of centrifugal force, and the force accumulation in the water suction chamber is increased through the resistance provided by the matching of the backflow block, the boss and the concave platform, so that the liquid flow out of the water outlet is accelerated, and the working efficiency of the pump is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of a vertical pump according to an embodiment of the present invention.

Fig. 2 is an exploded view of a vertical pump according to an embodiment of the present invention.

Fig. 3 is a top view of a vertical pump according to an embodiment of the present invention.

Fig. 4 is a sectional view taken along line a-a in fig. 3.

Fig. 5 is a partially enlarged view of the area a shown in fig. 4.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the embodiments of the present invention, and should not be construed as limiting the utility model.

In the description of the embodiments of the present invention, it should be understood that, if directional indications are provided in the embodiments of the present invention, such as directions of up, down, left, right, front, back, inner, outer, etc., the directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for convenience of describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, terms such as "mounted," "connected," and "fixed" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.

In an embodiment of the present invention, as shown in fig. 1 to 5, a pump chamber structure 10 is provided, which includes a pump cover 11, an impeller 12, a pump main body 13, a flow guide block 14, a boss 15, and a concave table 16, wherein a water inlet 111 is formed at a bottom end of the pump cover 11, and a water outlet 131 is formed at a side wall of the pump main body 13; the pump cover 11 is fixedly arranged at the bottom of the pump body 13, a water suction chamber 17 is formed between the pump cover 11 and the pump body 13, the impeller 12 is rotatably arranged in the water suction chamber 17, a circle of flow guide blocks 14 are fixedly arranged at the upper part of the water suction chamber 17 and are arranged along the circumferential direction of the impeller 12, and the flow guide blocks 14 guide liquid thrown out by the impeller 12 to the water outlet 131; a circle of the bosses 15 are fixedly arranged at the bottom of the impeller 12 along the circumferential direction of the impeller 12; the circle of concave station 16 is located along the circumference of pump cover 11 the upper end of pump cover 11 and correspond to water inlet 111, the boss stretches into concave station 16. When liquid enters the impeller 12 from the water inlet 111, the liquid flows to the water outlet 131 under the action of centrifugal force, the resistance provided by the matching of the boss 15 and the concave 16 increases the suction force in the water suction chamber 17, and the liquid thrown out by the impeller 12 is guided by the guide block 14, so that the liquid flows out of the water outlet 131 quickly, and the working efficiency of the pump is improved.

In another embodiment of the present invention, as shown in fig. 2 and 5, a diversion inclined plane 141 is provided along a lower peripheral edge of the diversion block 14, the diversion inclined plane 141 corresponds to the impeller 12, and has an inner peripheral edge 142 and an outer peripheral edge 143, and the inner peripheral edge 142 is connected to the outer peripheral edge 143 in an inclined manner to form the diversion inclined plane 141. The guide slope 141 is arranged to effectively guide the liquid thrown out by the impeller 12 to flow out of the water outlet 131, so that the working efficiency of the pump is improved.

In another embodiment of the present invention, as shown in fig. 5, a ring of threaded sleeves 144 is provided along the upper periphery of the deflector block 14, and the threaded sleeves 144 are screwed with the upper sidewall of the suction chamber 17. Simple structure, simple to operate, firm in connection.

In another embodiment of the present invention, as shown in fig. 5, the pump cap 11 has an inner peripheral sidewall 112, and the inner peripheral sidewall 112 is provided with a flow guiding cone surface 113. The guide cone surface 113 is arranged to effectively guide liquid flowing into the water suction chamber 17 from the water inlet, so that the working efficiency of the pump is improved.

In another embodiment of the present invention, as shown in fig. 5, a circle of grooves 132 is formed along the circumferential direction of the lower end surface of the pump main body 13, and a first sealing ring (not shown) is disposed in the groove 132, and the first sealing ring (not shown) is attached between the pump main body 13 and the pump cover 11. The sealing performance between the pump body 13 and the pump cover 11 is increased, and pressure release is prevented.

In another embodiment of the present invention, as shown in fig. 5, the pump cover 11 is screwed to the inner circumference of the lower end of the pump body 13. Simple structure, simple to operate, firm in connection.

In another embodiment of the present invention, as shown in fig. 4, a vertical pump 1 is provided, which includes a motor 20 and a pump shaft 21, wherein the motor 20 is drivingly connected to the pump shaft 21; the vertical pump 1 further comprises the pump cavity structure 10, and the lower end of the pump shaft 21 is in driving connection with the impeller 12. When the pump body 13 is immersed in liquid, the water suction chamber 17 is a sealed space, the motor 20 drives the impeller 12 to rotate, the speed can be converted into pressure energy to suck and discharge the liquid, and the pressure in the pump is increased and the working pressure of the pump is increased through the pump cavity structure 10.

In another embodiment of the present invention, as shown in fig. 4, a shaft sleeve 22 is sleeved on the pump shaft 21. The shaft sleeve 22 protects the pump shaft 21 from normal operation. Specifically, the shaft sleeve 22 is usually made of an anti-corrosion material (plastic) and serves to protect the pump shaft 21 and improve its anti-corrosion capability.

In another embodiment of the present invention, as shown in fig. 4, the motor 20 is fixed on a seat plate 23, a sealing sleeve 24 is disposed on a bottom surface of the seat plate 23, and the pump shaft 21 penetrates through the seat plate 23 and the sealing sleeve 24; the top of the shaft sleeve 22 is provided with a second sealing ring 221, and the second sealing ring 221 is sealed between the sealing sleeve 24 and the shaft sleeve 22. The sealing performance between the sealing sleeve 24 and the shaft sleeve 22 is improved, the working stability of the motor 20 is ensured, the pump shaft 21 is prevented from being corroded by gas in the pump main body 13, and the service life of the pump is prolonged.

In another embodiment of the present invention, as shown in fig. 4, the vertical pump 1 further comprises a supporting tube 25, wherein the upper end of the supporting tube 25 is fixedly connected to the seat plate 23, and the lower end of the supporting tube 25 is fixedly connected to the pump body 13. The support tube 25 supports the pump shaft 21, thereby improving the stability of the operation of the pump shaft 21.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A pump chamber structure comprising:

the bottom end of the pump cover is provided with a water inlet;

the side wall of the pump main body is provided with a water outlet; the pump cover is fixedly arranged at the bottom of the pump main body, and a water suction chamber is formed between the pump cover and the pump main body;

the impeller is rotatably arranged in the water suction chamber;

characterized in that, pump chamber structure still includes:

the circle of the flow guide blocks are fixedly arranged at the upper part of the water suction chamber and are arranged along the circumferential direction of the impeller, and the flow guide blocks guide liquid thrown out by the impeller to the water outlet;

the circle of bosses are fixedly arranged at the bottom of the impeller along the circumferential direction of the impeller; and

and the circle of concave platform is arranged at the upper end of the pump cover along the circumferential direction of the pump cover and corresponds to the water inlet, and the boss extends into the concave platform.

2. The pump chamber structure according to claim 1, wherein a guide slope is provided along a lower peripheral edge of the guide block, the guide slope corresponding to the impeller and having an inner peripheral edge and an outer peripheral edge, the inner peripheral edge being connected to the outer peripheral edge obliquely upward to form the guide slope.

3. The pump chamber structure of claim 1 wherein a ring of threaded sleeves is provided along the upper periphery of the baffle block, said threaded sleeves being threaded onto the upper sidewall of the suction chamber.

4. A pump chamber structure according to any one of claims 1-3, wherein the pump cover has an inner peripheral side wall provided with a flow guiding tapered surface.

5. A pump chamber structure according to any one of claims 1 to 3, characterized in that a circle of groove is formed along the circumferential direction of the lower end surface of the pump main body, a first sealing ring is arranged in the groove, and the first sealing ring is attached between the pump main body and the pump cover.

6. A pump chamber structure according to any one of claims 1 to 3, wherein the pump cover is screwed to the inner periphery of the lower end of the pump main body.

7. A vertical pump comprising:

a pump shaft;

the motor is in driving connection with the pump shaft; a pump chamber structure according to any one of claims 1 to 6, further comprising a lower end of the pump shaft drivingly connected to the impeller.

8. The vertical pump of claim 7, wherein a shaft sleeve is sleeved on the pump shaft.

9. The vertical pump as claimed in claim 8, wherein the motor is fixed on a seat plate, a sealing sleeve is arranged on the bottom surface of the seat plate, and the pump shaft penetrates through the seat plate and the sealing sleeve; and a second sealing ring is arranged at the top of the shaft sleeve and is sealed between the sealing sleeve and the shaft sleeve.

10. The vertical pump as claimed in claim 9, further comprising a support tube having an upper end fixedly connected to the seat plate and a lower end fixedly connected to the pump body.