CN215719524U

CN215719524U - Slurry pump

Info

Publication number: CN215719524U
Application number: CN202122011986.0U
Authority: CN
Inventors: 候泽飞; 候进才
Original assignee: Hebei Yongquan Motor Pump Manufacturing Co ltd
Current assignee: Hebei Yongquan Motor Pump Manufacturing Co ltd
Priority date: 2021-08-25
Filing date: 2021-08-25
Publication date: 2022-02-01
Anticipated expiration: 2031-08-25

Abstract

The utility model relates to the field of centrifugal pumps, in particular to a slurry pump which comprises a support, wherein one side of the support is fixedly connected with a volute, an impeller is arranged in the volute, the impeller is connected with a driving assembly in a shaft coupling mode, and the bottom of the support is provided with a vibration damping assembly; the impeller comprises an impeller rear cover plate and an impeller front cover plate, and a plurality of blade assemblies are uniformly distributed between the impeller rear cover plate and the impeller front cover plate; the blade assembly comprises blades and splitter blades, the splitter blades are positioned on the outer sides of the blades, and the outer edges of the splitter blades are flush with the edges of the impeller rear cover plate and the impeller front cover plate; the splitter blade comprises a convex tip and a concave tip, the convex tip and the concave tip are in the same orientation, the edges of the convex tip and the concave tip are in tangent connection through arcs, and the convex tip faces the blade. The utility model provides a slurry pump capable of reducing vibration, so that the service life of the slurry pump is prolonged.

Description

Slurry pump

Technical Field

The utility model relates to the field of centrifugal pumps, in particular to a slurry pump.

Background

The slurry pump achieves the purpose of conveying solid-liquid mixed media by the centrifugal force generated by the rotation of the impeller. The main structure of the slurry pump comprises a transmission part and a pump head, wherein the pump head is a core component of the slurry pump, and the pump head is generally composed of a pump body, a pump cover, an impeller and a lining part.

The sediment stuff pump vibrates great at the operation in-process, and the vibration can influence the life of sediment stuff pump, and the reason that the vibration produced has a variety, and the sediment stuff pump itself rotates the in-process and can produce partly vibration, and the sediment stuff pump is at the operation in-process in addition, and the fluid flow in the pump also can arouse the vibration, and consequently, the vibration problem of solving the sediment stuff pump is the problem that the present stage is urgent to be solved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a slurry pump, which solves the problems and reduces vibration so as to prolong the service life of the slurry pump.

In order to achieve the purpose, the utility model provides the following scheme:

the slurry pump comprises a support, wherein a volute is fixedly connected to one side of the support, an impeller is arranged in the volute, the impeller is connected with a driving assembly in a shaft coupling mode, and a vibration damping assembly is arranged at the bottom of the support;

the impeller comprises an impeller rear cover plate and an impeller front cover plate, and a plurality of blade assemblies are uniformly distributed between the impeller rear cover plate and the impeller front cover plate;

the blade assembly comprises blades and splitter blades, the splitter blades are positioned on the outer sides of the blades, and the outer edges of the splitter blades are flush with the edges of the impeller rear cover plate and the impeller front cover plate;

the splitter blade comprises a convex tip and a concave tip, the convex tip and the concave tip are in the same orientation, the edges of the convex tip and the concave tip are in tangent connection through an arc, and the convex tip faces the blade.

Preferably, the radius of the impeller rear cover plate and the impeller front cover plate is D, the distance from the edge of the blade to the center of the impeller rear cover plate is D, the distance from the protruding tip to the center of the impeller rear cover plate is D2, the distance from the tip of the protruding tip to the tip of the concave tip is L, and the radius of the circular arc is R;

the distance D between the edge of the blade and the center of the impeller back cover plate is mD, and the value range of m is 0.8-1.

Preferably, the distance D2 between the tip and the center of the impeller back cover plate is equal to nD, and n ranges from 0.7 to 0.9.

Preferably, the distance L between the tip of the protruding tip and the tip of the concave tip is equal to aD, and a ranges from 0.1 to 0.2.

Preferably, the arc radius R ═ bD, b ranges from 0.01 to 0.02.

Preferably, the vibration reduction assembly comprises a first ball seat fixedly connected to four corners of the bottom of the support, a first ball head is connected to the first ball seat in a rotating mode, a piston end of a high-frequency servo motor is fixedly connected to the first ball head, a second ball seat is fixedly connected to the center of the bottom of the support, a second ball head is connected to the second ball seat in a rotating mode, one end of a connecting rod is fixedly connected to the second ball head, a sliding sleeve is sleeved on the outer side of the connecting rod in a sliding mode, a base plate is fixedly connected to the cylinder body of the high-frequency servo motor and the sliding sleeve respectively, a spring is fixedly connected between the other end of the connecting rod and the base plate, and a pressure sensor is fixedly connected between the high-frequency servo motor and the first ball head.

Preferably, the opposite side surfaces of the impeller rear cover plate and the impeller front cover plate are respectively provided with a first groove and a second groove, the first groove is matched with the projection shape of the blade, the second groove is matched with the projection shape of the splitter blade, and the impeller rear cover plate, the impeller front cover plate, the blade and the splitter blade are respectively provided with corresponding screw through holes.

Preferably, the driving assembly comprises a bearing assembly fixedly connected above the bracket, a driving shaft is rotatably connected to the center of the bearing assembly, one end of the driving shaft penetrates through the bearing assembly and the volute to be coupled with the impeller rear cover plate, and the other end of the driving shaft is connected with a motor in a transmission manner.

The utility model has the following technical effects:

when the slurry pump is in operation, pumped liquid flows to the edges of the impeller rear cover plate and the impeller front cover plate through the two blades, then flows to the inner wall of the volute, is pumped out through the outlet of the volute, when the liquid flows to the volute, the liquid can generate larger vortex due to the sharp change of the flow direction, the liquid can be cut when flowing through the splitter blade by arranging the splitter blade at the outer side of the blade, then a smaller vortex is formed at the arc of the splitter blade, the original large vortex is cut into small vortices by the cutting action of the splitter blade, when the vortex becomes smaller, the noise generated by the vortex becomes smaller, the subsequent liquid in the slurry pump pushes the small vortex separated by the splitter vane to continue to move forwards in the volute along with the operation of the slurry pump and is pumped out from the outlet of the volute, therefore, the purpose of reducing noise is achieved, and meanwhile, the vibration in the operation process of the slurry pump is further reduced by matching with the vibration reduction assembly.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments 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 without inventive exercise.

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

FIG. 2 is a schematic view of the structure of the driving shaft and the impeller;

FIG. 3 is a front view of the impeller back cover plate;

fig. 4 is a partial sectional structural view of the impeller.

Wherein, 1, a bracket; 2. a bearing assembly; 3. a drive shaft; 4. a volute; 5. an impeller; 501. an impeller rear cover plate; 502. an impeller front cover plate; 503. a blade; 504. a splitter blade; 6. a first ball cup seat; 7. a second ball cup seat; 8. a first ball head; 9. a high-frequency servo motor; 10. a second ball head; 11. a connecting rod; 12. a sliding sleeve; 13. a spring; 14. a base 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.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

Referring to fig. 1-4, the utility model provides a slurry pump, which comprises a bracket 1, wherein one side of the bracket 1 is fixedly connected with a volute 4, an impeller 5 is arranged in the volute 4, the impeller 5 is coupled with a driving assembly, and the bottom of the bracket 1 is provided with a vibration damping assembly;

the impeller 5 comprises an impeller rear cover plate 501 and an impeller front cover plate 502, and a plurality of blade assemblies are uniformly distributed between the impeller rear cover plate 501 and the impeller front cover plate 502;

the blade assembly comprises a blade 503 and a splitter blade 504, the splitter blade 504 is positioned outside the blade 503, and the outer side edge of the splitter blade 504 is flush with the edges of the impeller rear cover plate 501 and the impeller front cover plate 502;

the splitter blade 504 includes a convex tip and a concave tip, the convex tip and the concave tip are in the same orientation, the edges of the convex tip and the concave tip are connected tangentially through an arc, and the convex tip faces the blade 503.

In the operation process of the slurry pump, pumped liquid flows to the edges of the impeller rear cover plate 501 and the impeller front cover plate 502 through the two blades 503, then flows to the inner wall of the volute 4, and is pumped out through the outlet of the volute 4, when the liquid flows to the volute 4, the liquid generates a larger vortex due to the rapid change of the flow direction, the liquid is cut when flowing through the splitter blade 504 by arranging the splitter blade 504 at the outer side of the blade 503, then a smaller vortex is formed at the arc part of the splitter blade 504, the original large vortex is cut into small vortices through the cutting action of the splitter blade 504, when the vortex is reduced, the noise generated by the small vortices is reduced, the subsequent liquid in the slurry pump pushes the small vortices separated by the splitter blade 504 to continue to move in the volute 4 along with the operation of the slurry pump, and is pumped out from the outlet of the volute 4, so that the purpose of reducing the noise is achieved, and the vibration reduction assembly is matched at the same time, further reduce the vibration of the slurry pump in the operation process.

In a further optimization scheme, the radius of the impeller rear cover plate 501 and the impeller front cover plate 502 is D, the distance from the edge of the blade 503 to the center of the impeller rear cover plate 501 is D1, the distance from the convex tip to the center of the impeller rear cover plate 501 is D2, the distance from the tip of the convex tip to the tip of the concave tip is L, and the radius of the circular arc is R;

the distance D1 between the edge of the blade 503 and the center of the impeller back cover plate 501 is mD, and m is in the range of 0.8-1.

In a further optimization scheme, the distance D2 from the protruding tip to the center of the impeller back cover plate 501 is equal to nD, and the value range of n is 0.7-0.9.

In a further optimization scheme, the distance L between the tip of the convex tip and the tip of the concave tip is equal to aD, and the value range of a is 0.1-0.2.

In a further optimization scheme, the arc radius R is bD, and the value range of b is 0.01-0.02.

Further optimize the scheme, the damping subassembly includes first bulb seat 6 of fixed connection in 1 bottom four corners of support, 6 internal rotations of first bulb seat are connected with first bulb 8, the piston end of 8 fixedly connected with high frequency servo motor 9 of first bulb, 1 bottom center fixedly connected with second bulb seat 7 of support, 7 internal rotations of second bulb seat are connected with second bulb 10, 11 one ends of 10 fixedly connected with connecting rod of second bulb, sliding sleeve 12 has been cup jointed in the slip in the connecting rod 11 outside, 9 cylinder bodies of high frequency servo motor, sliding sleeve 12 respectively fixedly connected with bottom plate 14, fixedly connected with spring 13 between the connecting rod 11 other end and the bottom plate 14, high frequency servo motor 9 with fixedly connected with pressure sensor between the first bulb 8.

High frequency servo motor 9 is linear electric motor, high frequency servo motor 9, pressure sensor electric connection has the controller, the PLC controller can be chooseed for use to the controller, the sediment stuff pump operation in-process produces the vibration, support 1 can be alleviated through the buffering of spring 13, longitudinal vibration between bottom plate 14, transmit to the controller through the pressure value that detects pressure sensor, controller control high frequency servo motor 9 produces the flexible vibration that can offset support 1 of opposite direction, through set up the motion that first bulb 8 and second bulb 10 cooperate jointly and can make support 1 produce the multi-angle in support 1 below, thereby make the damping effect of whole damping subassembly better.

According to the further optimization scheme, the opposite side surfaces of the impeller rear cover plate 501 and the impeller front cover plate 502 are respectively provided with a first groove and a second groove, the first groove is matched with the projection shape of the blade 503, the second groove is matched with the projection shape of the splitter blade 504, and the impeller rear cover plate 501, the impeller front cover plate 502, the blade 503 and the splitter blade 504 are respectively provided with corresponding screw through holes.

The impeller assembly of the slurry pump is easy to damage in the operation process, and the impeller rear cover plate 501 and the impeller front cover plate 502 are not easy to damage, so that the impeller rear cover plate 501, the impeller front cover plate 502, the blades 503 and the splitter blades 504 are arranged to be split structures, when the impeller assembly is damaged, the impeller assembly is disassembled, only the damaged blades 503 and splitter blades 504 are replaced, the whole impeller assembly is not required to be replaced, and the maintenance cost of the slurry pump is reduced.

Further optimize the scheme, drive assembly includes bearing assembly 2 of fixed connection in support 1 top, and bearing assembly 2 center rotation is connected with

drive shaft

3, and 3 one ends of drive shaft pass bearing assembly 2, spiral case 4 and impeller back shroud 501 coupling, and the other end transmission of drive shaft 3 is connected with the motor.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.

Claims

1. A slurry pump characterized in that: the vibration reduction device comprises a support (1), wherein a volute (4) is fixedly connected to one side of the support (1), an impeller (5) is arranged in the volute (4), the impeller (5) is connected with a driving assembly in a shaft mode, and a vibration reduction assembly is arranged at the bottom of the support (1);

the impeller (5) comprises an impeller rear cover plate (501) and an impeller front cover plate (502), and a plurality of blade assemblies are uniformly distributed between the impeller rear cover plate (501) and the impeller front cover plate (502);

the blade assembly comprises a blade (503) and a splitter blade (504), the splitter blade (504) is positioned on the outer side of the blade (503), and the outer side edge of the splitter blade (504) is flush with the edges of the impeller rear cover plate (501) and the impeller front cover plate (502);

the splitter blade (504) comprises a convex tip and a concave tip, the convex tip and the concave tip are in the same direction, the edges of the convex tip and the concave tip are tangentially connected through an arc, and the convex tip faces the blade (503).

2. The slurry pump of claim 1, wherein: the radius of the impeller rear cover plate (501) and the radius of the impeller front cover plate (502) are D, the distance from the edge of the blade (503) to the center of the impeller rear cover plate (501) is D1, the distance from the convex tip to the center of the impeller rear cover plate (501) is D2, the distance from the tip of the convex tip to the tip of the concave tip is L, and the radius of the circular arc is R;

the distance D1 between the edge of the blade (503) and the center of the impeller rear cover plate (501) is mD, and the value range of m is 0.8-1.

3. The slurry pump of claim 2, wherein: the distance D2 between the protruding tip and the center of the impeller rear cover plate (501) is nD, and the value range of n is 0.7-0.9.

4. The slurry pump of claim 2, wherein: the distance L between the tip of the convex tip and the tip of the concave tip is aD, and the value range of a is 0.1-0.2.

5. The slurry pump of claim 2, wherein: the radius R of the circular arc is bD, and the value range of b is 0.01-0.02.

6. The slurry pump of claim 1, wherein: the vibration reduction assembly comprises a first ball socket (6) fixedly connected with four corners of the bottom of the bracket (1), a first bulb (8) is rotationally connected in the first bulb seat (6), the first bulb (8) is fixedly connected with a piston end of a high-frequency servo motor (9), a second ball head seat (7) is fixedly connected with the center of the bottom of the bracket (1), a second ball head (10) is rotatably connected with the second ball head seat (7), the second ball head (10) is fixedly connected with one end of a connecting rod (11), the outer side of the connecting rod (11) is sleeved with a sliding sleeve (12) in a sliding manner, the cylinder body of the high-frequency servo motor (9) and the sliding sleeve (12) are respectively and fixedly connected with a bottom plate (14), a spring (13) is fixedly connected between the other end of the connecting rod (11) and the bottom plate (14), and a pressure sensor is fixedly connected between the high-frequency servo motor (9) and the first ball head (8).

7. The slurry pump of claim 1, wherein: first recess and second recess have been seted up respectively to impeller back shroud (501), the relative side of impeller front shroud (502), first recess with blade (503) projection shape phase-match, the second recess with splitter blade (504) projection shape phase-match, corresponding screw via hole has been seted up respectively on impeller back shroud (501), impeller front shroud (502), blade (503), splitter blade (504).

8. The slurry pump of claim 1, wherein: the driving assembly comprises a bearing assembly (2) fixedly connected above the support (1), a driving shaft (3) is rotatably connected to the center of the bearing assembly (2), one end of the driving shaft (3) penetrates through the bearing assembly (2), the volute (4) and the impeller rear cover plate (501) in a shaft connection mode, and the other end of the driving shaft (3) is connected with a motor in a transmission mode.