CN216447114U

CN216447114U - Multi-stage high-lift large-flow slurry pump

Info

Publication number: CN216447114U
Application number: CN202220060145.0U
Authority: CN
Inventors: 李富强; 张建力; 崔启明
Original assignee: Hebei Tongda Pump And Valve Group Co ltd
Current assignee: Hebei Tongda Pump And Valve Group Co ltd
Priority date: 2022-01-11
Filing date: 2022-01-11
Publication date: 2022-05-06
Anticipated expiration: 2032-01-11

Abstract

The utility model discloses a multistage high-lift large-flow slurry pump which comprises a rotating shaft, a bracket, a material inlet body, a first-stage volute and a second-stage volute, wherein the material inlet body is arranged on the right side of the bracket, the first-stage volute and the second-stage volute are sequentially arranged on the right side of the material inlet body, an inner cavity of the first-stage volute and an inner cavity of the second-stage volute are communicated with an inner cavity of the material inlet body, a first-stage impeller is arranged in the first-stage volute, a second-stage impeller is arranged in the second-stage volute, and the rotating shaft penetrates through the bracket and the material inlet body and extends into the first-stage volute and the second-stage volute to be connected with the first-stage impeller and the second-stage impeller. The multi-stage high-lift large-flow slurry pump adopting the structure has the advantages of high lift range, good sealing property and long service life.

Description

Multi-stage high-lift large-flow slurry pump

Technical Field

The utility model relates to the technical field of slurry pump equipment, in particular to a multistage high-lift large-flow slurry pump.

Background

The slurry pump refers to a device for converting electric energy into kinetic energy and potential energy of a medium by a machine for increasing energy of a solid-liquid mixed medium by the action of centrifugal force (rotation of an impeller of the pump). The method is mainly suitable for the following steps: the working principle of the industrial fields of mines, power plants, dredging, metallurgy, chemical industry, building materials, petroleum and the like is as follows: under the action of centrifugal force, the liquid is thrown from the center of the impeller to the outer edge and obtains energy, and the energy leaves the outer edge of the impeller at high speed and enters the volute pump shell. In the volute pump casing, the liquid is decelerated due to the gradual expansion of the flow passage, part of kinetic energy is converted into static pressure energy, and finally the static pressure energy flows into a discharge pipeline at higher pressure and is sent to a required place. However, the existing slurry pump has the problems of limited lift range, insufficient mechanical seal tightness and short service life.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a multistage high-lift large-flow slurry pump which is high in lift range, good in sealing performance and long in service life.

In order to achieve the purpose, the utility model provides a multistage high-lift large-flow slurry pump which comprises a rotating shaft, a bracket, a material feeding body, a first-stage volute and a second-stage volute, wherein the material feeding body is arranged on the right side of the bracket, the first-stage volute and the second-stage volute are sequentially arranged on the right side of the material feeding body, an inner cavity of the first-stage volute and an inner cavity of the second-stage volute are communicated with an inner cavity of the material feeding body, a first-stage impeller is arranged in the first-stage volute, a second-stage impeller is arranged in the second-stage volute, and the rotating shaft penetrates through the bracket and the material feeding body and extends to the first-stage volute and the second-stage volute to be connected with the first-stage impeller and the second-stage impeller;

the two sides of the bracket are connected with the rotating shaft through bearings, the bracket is close to a water retaining disc arranged on the bearing on one side of the feeding body, one side of the water retaining disc is provided with a fixing nut, one side of the feeding body, which is close to the one-level volute, is provided with a positioning sleeve fixedly connected with the one-level impeller, the positioning sleeve is fixedly connected with a mechanical seal shaft sleeve between the fixing nuts, the feeding body is close to one side of the bracket is provided with a mechanical seal mounting port, the outer side of the mechanical seal mounting port is fixedly connected with a mechanical seal cover, one side of the mechanical seal cover, which is far away from the mechanical seal mounting port, is provided with a static ring arranged on the mechanical seal shaft sleeve, the inner side of the mechanical seal mounting port is provided with a movable ring arranged on the mechanical seal shaft sleeve, and the static ring is connected with the movable ring through a spring.

Preferably, the feed body is close to one side of one-level spiral case is equipped with first joint platform, the one-level spiral case is close to one side of the feed body is equipped with the second joint platform, first joint platform with the second joint platform passes through mutually and is connected for the joint recess, be close to in the feed body one side of one-level spiral case is equipped with the backplate, be equipped with on the circumference of backplate with joint recess assorted joint is protruding.

Preferably, a first limiting boss is arranged on the machine seal pressing cover, the first limiting boss and the machine seal mounting opening are connected in a penetrating mode to form a sliding cavity, a chamfer is arranged on the front side of the rotating ring, a sealing ring is arranged in the chamfer, and a second limiting boss matched with the sliding cavity is arranged on the rear side of the rotating ring.

Preferably, one side of the bracket, which is far away from the material feeding body, is provided with a bearing box, a bearing is arranged in the bearing box, the outer side of the bearing box is connected with a bearing gland, the middle part of the bearing gland is provided with a blocking sleeve, and a framework oil seal is arranged between the blocking sleeve and the bearing gland.

Therefore, the multistage high-lift large-flow slurry pump adopting the structure has the advantages of high lift range, good sealing performance and long service life.

The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.

Drawings

FIG. 1 is a schematic diagram of an embodiment of a multi-stage high-lift high-flow slurry pump of the present invention;

FIG. 2 is an enlarged view of the portion A of a multi-stage high-lift high-flow slurry pump of the present invention;

fig. 3 is a partial schematic view of a multistage high-lift high-flow slurry pump seal of the present invention.

Reference numerals:

1. a rotating shaft; 2. a bracket; 3. a material feeding body; 4. a first-stage volute; 5. a second-stage volute; 6. a first-stage impeller; 7. a secondary impeller; 8. a bearing; 9. a water retaining disc; 10. fixing a nut; 11. a positioning sleeve; 12. a mechanical seal shaft sleeve; 13. a machine seal mounting port; 14. a mechanical seal gland; 15. a stationary ring; 16. a moving ring; 17. a spring; 18. a first limit boss; 19. a seal ring; 20. a second limit boss; 21. a first clamping table; 22. a second clamping table; 23. a rear guard plate; 24. clamping connection protrusions; 25. a bearing housing; 26. a bearing gland; 27. a blocking sleeve; 28. and (5) framework oil seal.

Detailed Description

The technical solution of the present invention is further illustrated by the accompanying drawings and examples.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

Examples

Referring to fig. 1 to 3, as shown in the figures, the present invention provides a multi-stage high-lift high-flow slurry pump, which includes a rotating shaft 1, a bracket 2, a material feeding body 3, a first-stage volute 4 and a second-stage volute 5, wherein the material feeding body 3 is disposed on the right side of the bracket 2, the first-stage volute 4 and the second-stage volute 5 are sequentially disposed on the right side of the material feeding body 3, an inner cavity of the first-stage volute 4 and an inner cavity of the second-stage volute 5 are communicated with an inner cavity of the material feeding body 3, a first-stage impeller 6 is disposed in the first-stage volute 4, and a second-stage impeller 7 is disposed in the second-stage volute 5, the rotating shaft 1 extends through the bracket 2 and the material feeding body 3 to the first-stage volute 4 and the second-stage volute 5 to be connected with the first-stage impeller 6 and the second-stage impeller 7, and the rotating shaft 1 simultaneously drives the first impeller and the second impeller to rotate, so as to implement a two-stage material conveying function, thereby increasing a lift range of the slurry pump.

The both sides of bracket 2 are passed through bearing 8 and are connected with pivot 1, and bracket 2 is close to and is equipped with manger plate dish 9 on the bearing 8 of the body of feeding 3 one side, and the operational environment of sediment thick liquid pump is mostly submerged, and the setting of manger plate dish 9 can effectual improvement bracket 2's leakproofness, prevents that liquid from entering into bracket 2 and causes the damage to pivot 1, prolongs the life of pivot 1. One side of manger plate 9 is equipped with fixation nut 10, one side that is close to one-level spiral case 4 in the feed body 3 is equipped with the position sleeve 11 with one-level impeller 6 fixed connection, fixedly connected with machine seal axle sleeve 12 between position sleeve 11 and fixation nut 10, machine seal axle sleeve 12, position sleeve 11 connects gradually from a left side to the right side in pivot 1, thereby when with pivot 1 and feed body 3 sealing connection, also push up one-level impeller 6 and second grade impeller 7 tightly and make it fixed firm with the rotation.

One side of the material feeding body 3 close to the bracket 2 is provided with a machine seal mounting port 13, the outer side of the machine seal mounting port 13 is fixedly connected with a machine seal cover 14, one side of the machine seal cover 14 far away from the machine seal mounting port 13 is provided with a static ring 15 sleeved on the machine seal shaft sleeve 12, the inner side of the machine seal mounting port 13 is provided with a dynamic ring 16 sleeved on the machine seal shaft sleeve 12, the static ring 15 is connected with the dynamic ring 16 through a spring 17, and the dynamic ring 16 can compress the spring 17 to move left and right on the machine seal shaft sleeve 12. The mechanical seal gland 14 is provided with a first limit boss 18, the first limit boss 18 is connected with the mechanical seal mounting port 13 in a penetrating mode to form a sliding cavity, the front side of the moving ring 16 is provided with a chamfer, a sealing ring 19 is arranged in the chamfer, the arrangement of the sealing ring 19 improves the sealing performance between the moving ring 16 and the mechanical seal shaft sleeve 12, and liquid in the pump is prevented from leaking out through a gap between the moving ring 16 and the mechanical seal shaft sleeve 12. The rear side of rotating ring 16 is equipped with the spacing boss 20 of second that matches with the slip chamber, and the spacing boss 20 of second matches with first spacing boss 18, makes first spacing boss 18 carry on spacingly to the spacing boss 20 of second, prevents that rotating ring 16 roll-off machine from sealing the installing port 13.

In the operation process of the slurry pump, a conveying medium with certain pressure is filled in a sealing cavity formed by the feeding body 3 and the mechanical seal gland 14, and the movable ring 16 moves left and right on the mechanical seal shaft sleeve 12 along with the change of the pressure of the conveying medium, so that the impact force caused by the conveying medium is relieved, the mechanical seal structure is prevented from being damaged due to the overlarge impact force of the medium, and the service life of the mechanical seal structure is prolonged.

One side of the feeding body 3 close to the first-stage volute 4 is provided with a first clamping table 21, one side of the first-stage volute 4 close to the feeding body 3 is provided with a second clamping table 22, the first clamping table 21 and the second clamping table 22 are connected in a penetrating mode to form a clamping groove, one side of the feeding body 3 close to the first-stage volute 4 is provided with a rear protection plate 23, and the circumference of the rear protection plate 23 is provided with a clamping protrusion 24 matched with the clamping groove. The arrangement of the rear guard plate 23 can guide the liquid entering the feeding body 3, and can further improve the stability of the connection between the feeding body 3 and the first-stage volute 4.

A bearing box 25 is arranged on one side, away from the material feeding body 3, of the bracket 2, a bearing 8 is arranged in the bearing box 25, a bearing gland 26 is connected to the outer side of the bearing box 25, a blocking sleeve 27 is arranged in the middle of the bearing gland 26, and a framework oil seal 28 is arranged between the blocking sleeve 27 and the bearing gland 26. The setting of bearing box 25 can improve the lubricity of bearing 8 to reduce pivot 1 pivoted resistance, make pivot 1 can be smooth rotate in bearing 8, guarantee the stability of sediment stuff pump operation.

Therefore, the multistage high-lift large-flow slurry pump adopting the structure is provided with the multistage impellers, the lift range of the slurry pump is improved, and the movable ring and the static ring are arranged on the mechanical seal shaft sleeve and matched, so that the impact force of a liquid medium on the mechanical seal structure is relieved, the sealing performance of the mechanical seal structure is improved, and the service life of the slurry pump is prolonged.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the utility model without departing from the spirit and scope of the utility model.

Claims

1. The utility model provides a large-traffic sediment stuff pump of multistage high-lift which characterized in that: the feeding body is arranged on the right side of the bracket, the first-stage volute and the second-stage volute are sequentially arranged on the right side of the feeding body, an inner cavity of the first-stage volute and an inner cavity of the second-stage volute are communicated with an inner cavity of the feeding body, a first-stage impeller is arranged in the first-stage volute, a second-stage impeller is arranged in the second-stage volute, and the rotating shaft penetrates through the bracket and the feeding body and extends to the first-stage volute, and the second-stage volute is connected with the first-stage impeller and the second-stage impeller;

2. The multi-stage high-lift high-flow slurry pump according to claim 1, characterized in that: the feed body is close to one side of one-level spiral case is equipped with first joint platform, the one-level spiral case is close to one side of feed body is equipped with the second joint platform, first joint platform with the second joint platform passes through mutually to be connected for the joint recess, be close to in the feed body one side of one-level spiral case is equipped with the backplate, be equipped with on the circumference of backplate with joint recess assorted joint is protruding.

3. The multi-stage high-lift high-flow slurry pump according to claim 1, characterized in that: the mechanical seal device is characterized in that a first limiting boss is arranged on the mechanical seal gland, the first limiting boss and the mechanical seal mounting port are connected in a penetrating mode to form a sliding cavity, a chamfer is arranged on the front side of the rotating ring, a sealing ring is arranged in the chamfer, and a second limiting boss matched with the sliding cavity is arranged on the rear side of the rotating ring.

4. The multi-stage high-lift high-flow slurry pump according to claim 1, characterized in that: the bearing box is arranged on one side, away from the material feeding body, of the bracket, a bearing is arranged in the bearing box, a bearing gland is connected to the outer side of the bearing box, a blocking sleeve is arranged in the middle of the bearing gland, and a framework oil seal is arranged between the blocking sleeve and the bearing gland.