CN215719573U

CN215719573U - High-volume-efficiency single-stage pump

Info

Publication number: CN215719573U
Application number: CN202122390216.1U
Authority: CN
Inventors: 李金旭; 卢军涛; 郭瑞伟; 李元庆
Original assignee: Kaiquan Group Co ltd
Current assignee: Kaiquan Group Co ltd
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2022-02-01
Anticipated expiration: 2031-09-29

Abstract

The utility model discloses a single-stage pump with high volumetric efficiency, which comprises a base, wherein a driving motor and a pump body are installed on the base, an inlet and an outlet are formed in the pump body, a pump cover is arranged at one end, close to the driving motor, of the pump body, an impeller is arranged in the pump body, and a motor shaft of the driving motor penetrates through the pump cover and extends into the pump body to be in linkage connection with the impeller; a copper opening ring is clamped between the impeller and the pump body and is made of brass. According to the utility model, the copper mouth ring is additionally arranged between the impeller pump bodies, so that liquid flow leakage is reduced, and the volume efficiency is improved.

Description

High-volume-efficiency single-stage pump

Technical Field

The utility model relates to the technical field of single-stage pumps, in particular to a high-volume-efficiency single-stage pump.

Background

The single-stage pump generally comprises a motor, a pump body, a pump shaft, an impeller and the like, and is widely applied to the fields of cross-basin water transfer, farmland irrigation, production water supply and drainage and the like. In the single-stage pump, the pump shaft is used as a main component for transmitting mechanical energy, the pump shaft extends into the pump body through a pump cover on the pump body, one end of the pump shaft is provided with a motor shaft connecting hole for the insertion of the motor shaft, the linkage of the motor shaft and the pump shaft is realized through key connection, and the other end supports the impeller to be kept at a working position for rotary motion.

The material of the pump body and impeller all is HT, and the hardness differs by a little, and impeller hardness slightly is less than the pump body usually, and driving motor drives the rotatory in-process of impeller, and the impeller outer end can produce the friction with the pump body inner wall, and the two long-term friction can make this partial clearance increase to lead to the liquid stream to leak, volumetric efficiency reduces.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a single-stage pump with high volumetric efficiency.

In order to achieve the purpose, the utility model provides the following technical scheme: a single-stage pump with high volumetric efficiency comprises a base, wherein a driving motor and a pump body are mounted on the base, an inlet and an outlet are formed in the pump body, a pump cover is arranged at one end, close to the driving motor, of the pump body, an impeller is arranged inside the pump body, and a motor shaft of the driving motor penetrates through the pump cover and extends into the pump body to be in linkage connection with the impeller; a copper opening ring is clamped between the impeller and the pump body and is made of brass.

Through adopting above-mentioned technical scheme, it is equipped with the copper choma to press from both sides between the impeller and the pump body, the copper choma plays supporting role to the impeller, separate the pump body and impeller simultaneously again, avoid the two direct contact, and the copper choma adopts the brass material to make, its hardness loudness is softer in conventional pump body and impeller, therefore, when driving motor's motor shaft drove the impeller and rotates, the copper choma only can rub basically, the later stage is changed and only need to be changed the copper choma and can be replied original clearance, it is very convenient to maintain, it has reduced the liquid stream and has leaked, volume efficiency is promoted.

The utility model is further arranged in such a way that a first annular groove is formed in the inner wall of the pump body, a first limiting step is arranged on the inner wall of the pump body, which is positioned at one end of the first annular groove, which is close to the inlet of the pump body, the copper port ring is embedded in the first annular groove, the end surface of the copper port ring, which is close to the inlet of the pump body, is abutted against the first limiting step, a second annular groove is arranged at one end of the outer wall of the impeller, which is close to the inlet of the pump body, and the inner wall of the copper port ring is attached to the second annular groove.

Through adopting above-mentioned technical scheme, can realize the location installation of copper choma, and simple structure, the dismouting is maintained very conveniently.

The utility model is further provided that a second limiting step is arranged on the inner wall of the pump body at the position of the second annular groove far away from the inlet of the pump body, and one end of the copper opening ring far away from the inlet of the pump body is in clearance fit with the second limiting step.

Through adopting above-mentioned technical scheme, can further promote the stability of copper choma installation to reduce the friction between copper choma and the impeller, can not only promote the life of the two, can reduce the energy consumption moreover.

The utility model is further provided that one end of the outer wall of the copper collar, which is close to the inlet of the pump body, is provided with a guide inclined plane.

Through adopting above-mentioned technical scheme, can play the effect of direction when the installation of copper collar, make things convenient for the installation operation of copper collar greatly.

The utility model is further arranged in such a way that a first positioning groove with a semicircular section is formed on the inner wall of the first annular groove along the circumferential direction, a second positioning groove with a semicircular section is formed on the outer wall of the copper opening ring along the circumferential direction, when the copper opening ring is embedded in the first annular groove, the first positioning groove and the second positioning groove form a clamping groove, and an O-shaped rubber ring is embedded in the clamping groove.

Through adopting above-mentioned technical scheme, can not only promote the steadiness of copper mouthful ring installation, can promote the leakproofness between copper mouthful ring and the pump body inner wall moreover, further promote the volume efficiency.

The utility model is further provided that a plurality of guide plates are uniformly arranged on the inner wall of the pump body inlet along the circumferential direction.

Through adopting above-mentioned technical scheme, can play the effect of water conservancy diversion, improve the turbulent state of medium, reduce the impulsive noise.

The utility model is further arranged in such a way that a motor shaft of the driving motor penetrates through the middle part of the impeller, the motor shaft of the driving motor is in linkage with the impeller through a key connection, a mechanical seal is arranged on the periphery of the motor shaft of the driving motor, the mechanical seal is clamped between the impeller and the pump cover, and a pressing plate for pressing the impeller on the mechanical seal is installed at the end part of the motor shaft of the driving motor through a fastening screw.

Through adopting above-mentioned technical scheme, can realize that the circumference linkage and the axial between driving motor's motor shaft and the impeller are spacing, stability when having guaranteed driving motor's motor shaft drive impeller rotation.

Drawings

FIG. 1 is a schematic structural view of the present invention as a whole;

FIG. 2 is an enlarged view of portion A of FIG. 1;

fig. 3 is a side view of the utility model as a whole.

In the figure: 1. a base; 2. a drive motor; 3. a pump body; 4. an inlet; 5. an outlet; 6. a pump cover; 7. an impeller; 8. a motor shaft; 9. a copper collar; 10. a first annular groove; 11. a first limit step; 12. a second annular groove; 13. a second limit step; 14. a guide slope; 15. a first positioning groove; 16. a second positioning groove; 17. a clamping groove; 18. an O-shaped rubber ring; 19. a baffle; 20. mechanical sealing; 21. tightening the screw; 22. and (7) pressing a plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.

Example (b): the single-stage pump with high volumetric efficiency as shown in the attached figures 1-3 comprises a base 1, wherein a driving motor 2 and a pump body 3 are installed on the base 1 through bolts, an inlet 4 and an outlet 5 are arranged on the pump body 3, the inlet 4 and the outlet 5 are communicated with an inner cavity of the pump body 3, one end, close to the driving motor 2, of the pump body 3 is provided with a pump cover 6, the pump cover 6 is connected with the pump body 3 through bolts, an impeller 7 is arranged inside the pump body 3, a shell of the driving motor 2 is connected with the pump cover 6 through bolts, a motor shaft 8 of the driving motor 2 penetrates through the pump cover 6 and extends into the pump body 3 to be in linkage connection with the impeller 7, and a motor shaft 8 of the driving motor 2 drives the impeller 7 to rotate synchronously; a copper opening ring 9 is clamped between the impeller 7 and the pump body 3, and the copper opening ring 9 is made of brass. This design presss from both sides between impeller 7 and the pump body 3 and establishes copper mouthful ring 9, copper mouthful ring 9 plays the supporting role to impeller 7, separate the pump body 3 with impeller 7 simultaneously again, avoid the two direct contact, and copper mouthful ring 9 adopts the brass material to make, its hardness loudness is softer in conventional pump body 3 and impeller 7, therefore, when driving motor 2's motor shaft 8 drove impeller 7 and rotates, copper mouthful ring 9 only can rub basically, the later stage is changed and only needs to change copper mouthful ring 9 and can reply original clearance, it is very convenient to maintain, it has reduced the liquid stream and has leaked, promote the volumetric efficiency.

As shown in fig. 1 and fig. 2, a first annular groove 10 is formed in the inner wall of the pump body 3, a first limit step 11 is arranged at a position, close to one end of the inlet 4 of the pump body 3, of the first annular groove 10 on the inner wall of the pump body 3, the copper mouth ring 9 is embedded in the first annular groove 10, the end face, close to the inlet 4 of the pump body 3, of the copper mouth ring 9 is abutted to the first limit step 11, a second annular groove 12 is formed at a position, close to one end of the inlet 4 of the pump body 3, of the outer wall of the impeller 7, and the inner wall of the copper mouth ring 9 is attached to the second annular groove 12. The design can realize the positioning and installation of the copper opening ring 9, and the structure is simple, and the disassembly, assembly and maintenance are very convenient.

As shown in fig. 1 and fig. 2, a second limit step 13 is disposed on the inner wall of the pump body 3 at a position of the second annular groove 12 away from the inlet 4 of the pump body 3, and one end of the copper notch ring 9 away from the inlet 4 of the pump body 3 is in clearance fit with the second limit step 13. This design can further promote the stability of copper choma 9 installation to reduce the friction between copper choma 9 and the impeller 7, can not only promote the life of the two, can reduce the energy consumption moreover.

As shown in fig. 2, the end of the outer wall of the copper notch ring 9 close to the inlet 4 of the pump body 3 is provided with a guide inclined surface 14. The guide inclined plane 14 can play a role in guiding when the copper collar 9 is installed, and installation operation of the copper collar 9 is greatly facilitated.

As shown in fig. 2, a first positioning groove 15 with a semicircular cross section is formed in the inner wall of the first annular groove 10 along the circumferential direction, a second positioning groove 16 with a semicircular cross section is formed in the outer wall of the copper collar 9 along the circumferential direction, when the copper collar 9 is embedded in the first annular groove 10, the first positioning groove 15 and the second positioning groove 16 form a clamping groove 17, the cross section of the clamping groove 17 is circular, an O-shaped rubber ring 18 is embedded in the clamping groove 17, and the shape of the O-shaped rubber ring 18 is matched with the shape of the clamping groove 17. This design can not only promote the steadiness of the installation of copper mouthful ring 9, can promote the leakproofness between copper mouthful ring 9 and the 3 inner walls of the pump body moreover, further promotes the volume efficiency.

As shown in fig. 1 and fig. 3, a plurality of flow deflectors 19 are uniformly arranged on the inner wall of the inlet 4 of the pump body 3 along the circumferential direction, and the flow deflectors 19 are welded on the inner wall of the pump body 3. The guide plate 19 can play the effect of water conservancy diversion, improves the turbulent state of medium, reduces the impulsive noise.

As shown in fig. 1, a motor shaft 8 of the driving motor 2 penetrates through the middle of the impeller 7, the motor shaft 8 of the driving motor 2 is in linkage with the impeller 7 through a key connection, a mechanical seal 20 is arranged on the periphery of the motor shaft 8 of the driving motor 2, the mechanical seal 20 is clamped between the impeller 7 and the pump cover 6, and a pressing plate 22 for pressing the impeller 7 on the mechanical seal 20 is mounted at the end of the motor shaft 8 of the driving motor 2 through a fastening screw 21. This design can realize the circumference linkage and the axial spacing between motor shaft 8 of driving motor 2 and impeller 7, stability when having guaranteed that driving motor 2's motor shaft 8 drives impeller 7 and rotates.

Claims

1. A single-stage pump with high volumetric efficiency comprises a base (1), wherein a driving motor (2) and a pump body (3) are installed on the base (1), an inlet (4) and an outlet (5) are formed in the pump body (3), a pump cover (6) is arranged at one end, close to the driving motor (2), of the pump body (3), and an impeller (7) is arranged inside the pump body (3); the method is characterized in that: a motor shaft (8) of the driving motor (2) penetrates through the pump cover (6) and extends into the pump body (3) to be connected with the impeller (7) in a linkage mode, a copper opening ring (9) is clamped between the impeller (7) and the pump body (3), and the copper opening ring (9) is made of brass.

2. A high volumetric efficiency, single stage pump as defined in claim 1 wherein: seted up first ring channel (10) on the inner wall of the pump body (3), the position that lies in first ring channel (10) and is close to pump body (3) import (4) one end on the inner wall of the pump body (3) is equipped with first spacing step (11), copper mouthful ring (9) are inlayed and are established in first ring channel (10) to copper mouthful ring (9) are close to the terminal surface and the first spacing step (11) of pump body (3) import (4) and are inconsistent, impeller (7) outer wall is close to the position of pump body (3) import (4) one end and is equipped with second ring channel (12), the inner wall and the second ring channel (12) of copper mouthful ring (9) are laminated mutually.

3. A high volumetric efficiency, single stage pump as defined in claim 2 wherein: the position that is located second ring channel (12) and keeps away from pump body (3) import (4) one end on the pump body (3) inner wall is equipped with second limit step (13), keep away from the one end and the second limit step (13) clearance fit of pump body (3) import (4) on copper mouthful ring (9).

4. A high volumetric efficiency, single stage pump as defined in claim 2 wherein: and a guide inclined plane (14) is arranged at one end of the outer wall of the copper opening ring (9) close to the inlet (4) of the pump body (3).

5. A high volumetric efficiency, single stage pump as defined in claim 2 wherein: the inner wall of the first annular groove (10) is circumferentially provided with a first locating groove (15) with a semicircular cross section, the outer wall of the copper opening ring (9) is circumferentially provided with a second locating groove (16) with a semicircular cross section, when the copper opening ring (9) is embedded in the first annular groove (10), the first locating groove (15) and the second locating groove (16) form a clamping groove (17), and an O-shaped rubber ring (18) is embedded in the clamping groove (17).

6. A high volumetric efficiency, single stage pump as defined in claim 1 wherein: a plurality of guide plates (19) are uniformly arranged on the inner wall of the inlet (4) of the pump body (3) along the circumferential direction.

7. A high volumetric efficiency, single stage pump as defined in claim 1 wherein: the impeller pump is characterized in that a motor shaft (8) of the driving motor (2) penetrates through the middle of the impeller (7), the motor shaft (8) of the driving motor (2) is in key connection with the impeller (7) to achieve linkage, a mechanical seal (20) is arranged on the periphery of the motor shaft (8) of the driving motor (2), the mechanical seal (20) is clamped between the impeller (7) and the pump cover (6), and a pressing plate (22) used for pressing the impeller (7) on the mechanical seal (20) is installed at the end part of the motor shaft (8) of the driving motor (2) through a fastening screw (21).