CN217270852U

CN217270852U - Double-impeller high-pressure centrifugal pump

Info

Publication number: CN217270852U
Application number: CN202221287841.1U
Authority: CN
Inventors: 孟文祥; 孟令淇
Original assignee: Henan Shennong Pump Co ltd
Current assignee: Henan Shennong Pump Co ltd
Priority date: 2022-05-26
Filing date: 2022-05-26
Publication date: 2022-08-23
Anticipated expiration: 2032-05-26

Abstract

The utility model discloses a bilobed wheel high-pressure centrifugal pump relates to centrifugal pump technical field, which comprises a pump body, the pump cover is installed to one side of the pump body, and the other end of pump cover is provided with the tee bend, it fills up to be connected with the second between tee bend and the pump cover, and the sealed internally connected who fills up of second has the second bolt, the tee bend other end is provided with the straight tube, and is connected with first sealed the pad between straight tube and the tee bend, the first sealed outside of filling up is provided with first loose joint nut, the tee bend top is connected with the kill sub-assembly, and the internally connected of kill sub-assembly has first valve. The utility model discloses in, be provided with the pump body, bearing, impeller and stator, through there being the stator in the design of pump body internal portion, just can alleviate power load, guaranteed the flow direction of water, the better suction of the impeller of being convenient for, two impellers of rethread just can be so that the mobility of water is better, and water pressure increases, and the injection effect is better, has higher practicality.

Description

Double-impeller high-pressure centrifugal pump

Technical Field

The utility model relates to a centrifugal pump technical field especially relates to bilobed wheel high-pressure centrifugal pump.

Background

The centrifugal pump is a pump for conveying liquid by means of centrifugal force generated when an impeller rotates, a pump shell and a water suction pipe are required to be filled with water before the water pump is started, then a motor is started, the pump shaft drives the impeller and the water to rotate at high speed, the water is thrown to the outer edge of the impeller and flows into a water pressure pipeline of the water pump through a flow channel of a volute-shaped pump shell after centrifugal motion occurs.

The existing high-pressure centrifugal pump is not provided with a drainage device inside in the using process, so that the power load of a pump body is heavier, the flow direction of water is more disordered, and the impeller is inconvenient to suck.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving current high-pressure centrifugal pump, in the use, high-pressure centrifugal pump is inside all not to set up drainage device for pump body power load is heavier, and the flow direction of water is more chaotic, the inspiratory shortcoming of the impeller of being not convenient for, and the bilobed wheel high-pressure centrifugal pump who provides.

In order to realize the purpose, the utility model adopts the following technical scheme:

a twin-impeller high-pressure centrifugal pump comprising:

the pump comprises a pump body, wherein a pump cover is installed on one side of the pump body, a tee joint is arranged at the other end of the pump cover, a second sealing gasket is connected between the tee joint and the pump cover, a second bolt is connected inside the second sealing gasket, a straight pipe is arranged at the other end of the tee joint, a first sealing gasket is connected between the straight pipe and the tee joint, a first loose joint nut is arranged outside the first sealing gasket, a kill-job assembly is connected to the top of the tee joint, a first valve is connected inside the kill-job assembly, a first bolt is arranged inside the tee joint and the kill-job assembly, a first nut is connected outside the first bolt, a straight joint is arranged at the top of the pump body, a second valve is connected between the straight joint and the pump body, a fourth bolt is connected outside the straight joint and the pump body, a fourth nut is connected outside the fourth bolt in a threaded manner, and an elbow is arranged at the top of the straight joint, and the other end of the elbow and the straight joint is provided with a third sealing gasket, and the outside of the third sealing gasket is provided with a fourth loose joint nut.

Preferably, a pump frame is arranged on the other side of the pump body, a fifth bolt is connected between the pump frame and the pump body, a shaft body is connected inside the pump body and the pump frame, a first key is connected outside one end of the shaft body, a second key is connected outside the other end of the shaft body, a bearing is connected outside the shaft body, a small end cover is arranged on one side of the shaft body, a third bolt is connected inside the small end cover, a third nut is connected outside the shaft body, a gasket is connected between the third nut and the shaft body, a spring pad is connected on the other side of the shaft body, an air release screw plug is arranged outside the shaft body, a large end cover is arranged on the other side of the shaft body, a framework oil seal is arranged inside the small end cover, a third O-shaped ring is connected between the pump body and the pump frame, a first O-shaped ring is arranged between the pump body and the pump cover, and a guide vane is arranged inside the pump body, the externally connected with second O type circle of stator, the externally mounted of axis body has the impeller, and the outside of axis body and the outside of big end cover are provided with mechanical seal, the outside of axis body and the outside of pump frame are provided with the band pulley.

Preferably, the inner wall of the bearing is attached to the outer wall of the shaft body, and four groups of the bearings are distributed.

Preferably, a detachable structure is formed between the elbow and the pump body through a fourth bolt and a fourth nut, and the inner diameter of the elbow is equal to that of the pump body.

Preferably, a detachable structure is formed between the straight pipe and the pump cover through a tee joint and a second bolt, and the diameter of an inner ring of the tee joint is equal to that of an inner ring of the second sealing gasket.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses in, be provided with the pump body, bearing, impeller and stator, through there being the stator in the design of pump body internal portion, just can alleviate power load, guaranteed the flow direction of water, the better suction of the impeller of being convenient for, two impellers of rethread just can be so that the mobility of water is better, and water pressure increases, and the injection effect is better, has higher practicality.

2. The utility model discloses in, be provided with the pump body, mechanical seal, skeleton oil blanket and bearing, the pump body adopts three to seal (mechanical seal, O type circle and sealed pad), four bearings, and machine oil is lubricated, and the effectual leakproofness and the lubricity that improve the pump body have prolonged the life of the pump body.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the pump body of the present invention;

fig. 3 is an enlarged schematic view of a portion a in fig. 2.

Illustration of the drawings:

1. a pump body; 2. a straight pipe; 3. bending the pipe; 4. a kill assembly; 5. a first valve; 6. a first bolt; 7. a first nut; 8. a spring pad; 9. a first loose joint nut; 10. a first gasket; 11. a tee joint; 12. a second bolt; 13. a second gasket; 14. a pump cover; 15. an impeller; 16. a first O-ring; 17. a second O-ring; 18. a guide vane; 19. a first key; 20. a shaft body; 21. a third O-ring; 22. a pump frame; 23. a bearing; 24. a small end cap; 25. a third bolt; 26. a pulley; 27. a gasket; 28. a third nut; 29. a second key; 30. framework oil seal; 31. an air-release screw plug; 32. a large end cap; 33. mechanical sealing; 34. a fourth nut; 35. a fifth bolt; 36. a fourth bolt; 37. a third gasket; 38. a fourth loose joint nut; 39. a straight section; 40. a second valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, a double-impeller high-pressure centrifugal pump comprises a pump body 1, a pump cover 14 is installed on one side of the pump body 1, a tee joint 11 is arranged at the other end of the pump cover 14, a second sealing gasket 13 is connected between the tee joint 11 and the pump cover 14, a second bolt 12 is connected inside the second sealing gasket 13, a straight pipe 2 is arranged at the other end of the tee joint 11, a first sealing gasket 10 is connected between the straight pipe 2 and the tee joint 11, the straight pipe 2 and the pump cover 14 form a detachable structure through the tee joint 11 and the second bolt 12, the diameter of the inner ring of the tee joint 11 is equal to that of the inner ring of the second sealing gasket 13, the second bolt 12 is manually operated, the second bolt 12 moves to the outside of the tee joint 11, so that the replacement work of the straight pipe 2 is conveniently completed, a first union nut 9 is arranged outside the first sealing gasket 10, a kill-well assembly 4 is connected to the top of the tee joint 11, and a first valve 5 is connected inside the kill-well assembly 4, a first bolt 6 is arranged inside the tee joint 11 and the kill-job assembly 4, a first nut 7 is connected outside the first bolt 6, a straight joint 39 is arranged at the top of the pump body 1, and a second valve 40 is connected between the straight section 39 and the pump body 1, a fourth bolt 36 is connected between the outer part of the straight section 39 and the outer part of the pump body 1, and the outer thread of the fourth bolt 36 is connected with a fourth nut 34, the top of the straight section 39 is provided with an elbow 3, and the other ends of the elbow 3 and the straight joint 39 are provided with a third sealing gasket 37, a detachable structure is formed between the elbow 3 and the pump body 1 through a fourth bolt 36 and a fourth nut 34, and the inner diameter of the elbow 3 is equal to the inner diameter of the pump body 1, the fourth bolt 36 is manually operated, the fourth bolt 36 moves to the outside of the elbow 3, therefore, the disassembly work of the elbow 3 is conveniently completed, and a fourth loose joint nut 38 is arranged and connected outside the third sealing gasket 37;

the other side of the pump body 1 is provided with a pump frame 22, a fifth bolt 35 is connected between the pump frame 22 and the pump body 1, the pump body 1 and the pump frame 22 are internally connected with a shaft body 20, one end of the shaft body 20 is externally connected with a first key 19, the other end of the shaft body 20 is externally connected with a second key 29, the shaft body 20 is externally connected with a bearing 23, the inner wall of the bearing 23 is attached to the outer wall of the shaft body 20, four groups of the bearing 23 are distributed, the shaft body 20 can drive the impellers 15 to rotate through the bearing 23, the two impellers 15 enable the water to have better fluidity, the water pressure is increased, the spraying effect is better, one side of the shaft body 20 is provided with a small end cover 24, the inside of the small end cover 24 is connected with a third bolt 25, the shaft body 20 is externally connected with a third nut 28, a gasket 27 is connected between the third nut 28 and the shaft body 20, the other side of the shaft body 20 is connected with a spring cushion 8, and the outside of the shaft body 20 is provided with a vent plug screw 31, and the other side of the shaft body 20 is provided with a large end cover 32, the inside of the small end cover 24 is provided with a skeleton oil seal 30, a third O-shaped ring 21 is connected between the pump body 1 and the pump frame 22, a first O-shaped ring 16 is arranged between the pump body 1 and the pump cover 14, the inside of the pump body 1 is provided with a guide vane 18, the outside of the guide vane 18 is connected with a second O-shaped ring 17, the outside of the shaft body 20 is provided with an impeller 15, the outside of the shaft body 20 and the outside of the large end cover 32 are provided with a mechanical seal 33, and the outside of the shaft body 20 and the outside of the pump frame 22 are provided with a belt pulley 26.

The working principle is as follows: during the use, at first the axis body 20 in the bilobed wheel high-pressure centrifugal pump can drive impeller 15 through bearing 23 and rotate, two impeller 15 just make the mobility of water better, water pressure increases, it is better to spray the effect, design has stator 18 in the bilobed wheel high-pressure centrifugal pump case, stator 18 can alleviate power load, the flow direction of water has been guaranteed, be convenient for impeller 15 better to inhale, pump body 1 adopts three seals (mechanical seal 33, O type circle and sealed pad), four bearings 23, machine oil lubrication, the leakproofness and the lubricity of the pump body 1 have been improved, the life of pump has been prolonged, manual operation fourth bolt 36, fourth bolt 36 will move outside elbow 3, just so conveniently accomplish the dismantlement work of elbow 3.

The above, only be the embodiment of the preferred of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, which are designed to be replaced or changed equally, all should be covered within the protection scope of the present invention.

Claims

1. Double-impeller high-pressure centrifugal pump, characterized by comprising:

the pump comprises a pump body (1), a pump cover (14) is installed on one side of the pump body (1), a tee joint (11) is arranged at the other end of the pump cover (14), a second sealing gasket (13) is connected between the tee joint (11) and the pump cover (14), a second bolt (12) is connected inside the second sealing gasket (13), a straight pipe (2) is arranged at the other end of the tee joint (11), a first sealing gasket (10) is connected between the straight pipe (2) and the tee joint (11), a first loose joint nut (9) is arranged outside the first sealing gasket (10), a kill sub assembly (4) is connected to the top of the tee joint (11), a first valve (5) is connected inside the kill sub assembly (4), a first bolt (6) is arranged inside the tee joint (11) and the kill sub assembly (4), and a first nut (7) is connected outside the first bolt (6), the top of the pump body (1) is provided with the straight section (39), and is connected with second valve (40) between the straight section (39) and the pump body (1), the outside of straight section (39) and the external connection of the pump body (1) have fourth bolt (36), and the outside threaded connection of fourth bolt (36) has fourth nut (34), the top of straight section (39) is provided with elbow (3), and the other end of elbow (3) and straight section (39) is provided with the sealed pad (37) of third, the outside setting of the sealed pad (37) of third is connected with fourth loose joint nut (38).

2. The twin-impeller high-pressure centrifugal pump of claim 1, wherein: the pump comprises a pump body (1), and is characterized in that a pump frame (22) is arranged on the other side of the pump body (1), a fifth bolt (35) is connected between the pump frame (22) and the pump body (1), a shaft body (20) is connected inside the pump body (1) and the pump frame (22), a first key (19) is connected outside one end of the shaft body (20), a second key (29) is connected outside the other end of the shaft body (20), a bearing (23) is connected outside the shaft body (20), a small end cover (24) is arranged on one side of the shaft body (20), a third bolt (25) is connected inside the small end cover (24), a third nut (28) is connected outside the shaft body (20), a gasket (27) is connected between the third nut (28) and the shaft body (20), a spring pad (8) is connected on the other side of the shaft body (20), and a deflation screw plug (31) is arranged outside the shaft body (20), and the opposite side of axis body (20) is provided with big end cover (32), the inside of little end cover (24) is provided with skeleton oil blanket (30), be connected with third O type circle (21) between the pump body (1) and pump frame (22), be provided with first O type circle (16) between the pump body (1) and pump cover (14), and the inside of the pump body (1) is provided with stator (18), the external connection of stator (18) has second O type circle (17), the externally mounted of axis body (20) has impeller (15), and the outside of axis body (20) and big end cover (32) is provided with mechanical seal (33), the outside of axis body (20) and the outside of pump frame (22) are provided with band pulley (26).

3. The twin-impeller high-pressure centrifugal pump of claim 2, wherein: the inner wall of the bearing (23) is attached to the outer wall of the shaft body (20), and four groups of the bearings (23) are distributed.

4. The twin-impeller high-pressure centrifugal pump of claim 1, wherein: a detachable structure is formed between the elbow (3) and the pump body (1) through a fourth bolt (36) and a fourth nut (34), and the inner diameter of the elbow (3) is equal to that of the pump body (1).

5. The twin-impeller high-pressure centrifugal pump of claim 1, wherein: the straight pipe (2) and the pump cover (14) form a detachable structure through a tee joint (11) and a second bolt (12), and the diameter of the inner ring of the tee joint (11) is equal to that of the inner ring of the second sealing gasket (13).