CN219317204U

CN219317204U - Enhanced horizontal slurry pump

Info

Publication number: CN219317204U
Application number: CN202223112369.0U
Authority: CN
Inventors: 李�杰
Original assignee: Hebei Kaiyue Industrial Pump Manufacturing Co ltd
Current assignee: Hebei Kaiyue Industrial Pump Manufacturing Co ltd
Priority date: 2022-11-21
Filing date: 2022-11-21
Publication date: 2023-07-07
Anticipated expiration: 2032-11-21

Abstract

The utility model discloses an enhanced horizontal slurry pump, wherein a pump head is formed by connecting a left side assembly and a right side assembly through bolts, the left side assembly is connected with a pump body base into a whole through bolts, and the center of the right side assembly and a liquid inlet port are connected into a whole; the pump chamber consists of two parts, including an outer chamber surface and an inner supporting surface, wherein the inner supporting surface is lapped on the inner side surface of the axle center fixing part; the outer chamber surface and the inner wall of the right side assembly are extruded and fixed into a whole; an impeller is arranged in the pump chamber, and the joint of the impeller and the driving shaft is connected by adopting threads or clamping grooves; clamping protrusions and external clamping are arranged on the left side surface and the right side surface of the impeller; after the structure is arranged, the number of components in the pump head area can be reduced, and the leakage points are reduced by adopting the integral molding of the outer cavity surface; the driving shaft is thickened and then connected with the pump body, and the impeller is provided with a radial positioning structure to prevent the influence of the deflection rotation of the impeller on the driving shaft.

Description

Enhanced horizontal slurry pump

Technical Field

The utility model relates to the technical field of industrial pumps, in particular to an enhanced horizontal slurry pump.

Background

A slurry pump is a machine for increasing the energy of a solid-liquid mixed medium by the action of centrifugal force (rotation of an impeller of the pump), and converts kinetic energy of high-speed rotation into kinetic energy and potential energy of the medium, and the machine is mainly applicable to: industry fields such as mines, power plants, dredging, metallurgy, chemical industry, building materials, petroleum and the like.

Because the operation environment of the slurry pump is severe, the conveyed substances contain crushed stones and gravel, and because the overall strength of the pump body is low, the pump body is easy to damage during operation, and the pump body structure is improved by the technicians in the field; however, such an improved pump body is also susceptible to the following problems when in use: 1. the pump body is formed by combining four parts, and under the impact of broken sand stones in high-speed operation, leakage easily occurs at the joint points; 2. after the driving shaft is connected with the pump body, the pump body is directly connected with the driving shaft, and a gap exists between the radial lower pump body and the shell, so that the driving shaft is broken due to centrifugal force, and the technical problem cannot be thoroughly eradicated at present.

Aiming at the defects in the prior art which still exist, as a person skilled in the art, continuous improvement on the existing pump head driving structure is still needed, so that the overall strength of the pump head is improved.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, an object of the present utility model is to provide an enhanced horizontal slurry pump, which improves the pump body structure as a whole and improves the driving shaft structure, so as to improve the stability of the operation of the slurry pump head.

The utility model comprises a pump body base, wherein a transmission bin is arranged on the pump body base, a driving shaft transversely penetrates through the transmission bin, and the driving shaft is fixed in the transmission bin through an end bearing and extends into a pump head all the time; the pump head is formed by axially assembling and connecting multiple parts, and comprises an axle center fixing part, wherein a sealing assembly is arranged in the axle center fixing part, the periphery of the axle center fixing part is arranged on the pump head assembly, the pump head assembly is formed by connecting two parts of bolts, namely a left side assembly and a right side assembly, the left side assembly is connected with a pump body base into a whole through bolts, and the center of the right side assembly and a liquid inlet port are connected into a whole;

the pump head is internally provided with a pump chamber in a coating manner, the pump chamber consists of two parts, and comprises an outer chamber surface and an inner supporting surface, and the inner supporting surface is lapped on the inner side surface of the axle center fixing part; the outer chamber surface and the inner wall of the right side assembly are extruded and fixed into a whole; an impeller is arranged in the pump chamber, and the joint of the impeller and the driving shaft is connected by adopting threads or clamping grooves; the left side surface and the right side surface of the impeller are provided with clamping bulges and external clamping devices.

The joint of the driving shaft and the impeller is provided with a stepped shaft, and the diameter A of the end part of the stepped shaft is not smaller than 60 mm.

The clamping bulge arranged on the left side surface of the impeller is clamped and fixed with the inner bulge on the inner supporting surface to restrict the impeller from moving radially.

The pump chamber is internally provided with an axial positioning groove, and a clamping protrusion on the right side surface of the impeller is in plug-in fit with the axial positioning groove.

The utility model has the following beneficial effects: the pump head is formed by axially assembling and connecting multiple parts, and comprises an axle center fixing part, wherein a sealing assembly is arranged in the axle center fixing part, the periphery of the axle center fixing part is arranged on the pump head assembly, the pump head assembly is formed by connecting two parts of bolts, namely a left side assembly and a right side assembly, the left side assembly is connected with a pump body base into a whole through bolts, and the center of the right side assembly and a liquid inlet port are connected into a whole; the pump chamber consists of two parts, including an outer chamber surface and an inner supporting surface, wherein the inner supporting surface is lapped on the inner side surface of the axle center fixing part; the outer chamber surface and the inner wall of the right side assembly are extruded and fixed into a whole; an impeller is arranged in the pump chamber, and the joint of the impeller and the driving shaft is connected by adopting threads or clamping grooves; clamping protrusions and external clamping are arranged on the left side surface and the right side surface of the impeller; after the structure is arranged, the number of components in the pump head area can be reduced, and the leakage points are reduced by adopting the integral molding of the outer cavity surface; the driving shaft is thickened and then connected with the pump body, and the impeller is provided with a radial positioning structure to prevent the influence of the deflection rotation of the impeller on the driving shaft.

Drawings

The utility model will be further described with reference to the drawings and examples.

FIG. 1 is a schematic view of the internal cross-sectional structure of the present utility model;

FIG. 2 is an enlarged schematic diagram of the internal structure from a side view;

in the figure, 1, a pump body base, 2, a coupling, 21, a sealing assembly, 3, a transmission bin, 31, a left bearing group, 32, a right bearing group, 4, a driving shaft, 5, an axle center fixing part, 51, a sealing assembly, 6, a pump head, 61, a left side assembly, 62, a right side assembly, 63, a liquid outlet, 64, a liquid inlet, 7, a pump chamber, 71, an inner supporting surface, 72, an outer chamber surface, 73, an axial positioning groove, 8, an impeller, 81, a left side clamping bulge, 82 and a right side clamping bulge.

Detailed Description

Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following detailed description of the utility model.

As shown in the drawing, the reinforced horizontal slurry pump has the same integral structure as the structure of the prior patent product, and comprises a pump body base 1, a transmission bin 3 is arranged on the pump body base, the left end of the transmission bin 3 is connected with a driving shaft 4 through a coupler 2, and the driving shaft 4 is fixedly penetrated in the transmission bin 3 through a left bearing group 31 and a right bearing group 32 and extends into a pump head 6; the pump head 6 is formed by axially assembling and connecting multiple parts, and comprises an axle center fixing part 5, wherein a sealing assembly 51 is arranged in the axle center fixing part 5, and the sealing assembly is wound by graphite or oil-immersed asbestos ropes.

The periphery of the axle center fixing part 5 is arranged on a pump head assembly, the pump head assembly is formed by connecting two parts of bolts and is respectively a left side assembly 61 and a right side assembly 62, the left side assembly 61 is connected with a pump body base into a whole through bolts, and the center of the right side assembly 62 is connected with a liquid inlet port 64 into a whole;

the design focus of the utility model is that: the pump head 6 is internally provided with a pump chamber 7 in a coating manner, the pump chamber 7 consists of two parts, and comprises an outer chamber surface 72 and an inner supporting surface 71, and the inner supporting surface 71 is lapped on the inner side surface of the axle center fixing part 5; the outer chamber face 72 and the inner wall of the right-hand assembly 62 are press-fitted together, the number of components of the pump chamber 7 is reduced, and the strength is greatly improved over the prior art by using an integral molding.

The inside of the pump chamber 7 is provided with an impeller 8, the joint of the impeller 8 and the driving shaft 4 is connected by adopting threads or clamping grooves, and in order to ensure the combination strength, the joint of the driving shaft and the impeller is arranged by adopting a stepped shaft, and the diameter A of the end part of the stepped shaft is not less than 60 mm, so that the structure effectively improves the connection strength; further, the left and right sides of the impeller 8 are provided with clamping protrusions and external clamping protrusions, the clamping protrusions comprise a left clamping protrusion 81 and a right clamping protrusion 82, and the left clamping protrusion 81 arranged on the left side of the impeller is fixedly clamped with the inner protrusion on the inner supporting surface 71 to restrict the impeller from moving radially; the inside axial positioning groove 73 that is provided with of pump chamber 7, the right side clamping arch 82 on the right side of impeller 8 and axial positioning groove 73 grafting cooperation, this simple structure is used for preventing the flabellum radial swing again equally, avoids the impeller to cause the injury to drive shaft 4 tie point when high-speed operation.

Summarizing: the pump chamber of the utility model is composed of two parts, which comprises an outer chamber surface and an inner supporting surface, wherein the inner supporting surface is lapped on the inner side surface of the axle center fixing part; the outer chamber surface and the inner wall of the right side assembly are extruded and fixed into a whole; after combination, the whole pump is fixed and stable, the number of components in the pump head area can be reduced, and the leakage points are reduced by adopting the integrated forming of the outer cavity surface. An impeller is arranged in the pump chamber, and the joint of the impeller and the thickened step-type driving shaft is connected by adopting threads or clamping grooves; clamping protrusions and external clamping are arranged on the left side surface and the right side surface of the impeller; the driving shaft is thickened and then connected with the pump body, and the impeller is provided with a radial positioning structure to prevent the influence of the deflection rotation of the impeller on the driving shaft.

Claims

1. The reinforced horizontal slurry pump includes one base with one transmission bin with one driving shaft extending into the pump head; the method is characterized in that: the pump head is internally provided with a pump chamber in a coating manner, the pump chamber consists of two parts, and comprises an external chamber surface and an inner side supporting surface, and the inner side supporting surface is lapped on the inner side surface of the axle center fixing part; the outer chamber surface and the inner wall of the right side assembly are extruded and fixed into a whole; an impeller is arranged in the pump chamber, and the joint of the impeller and the driving shaft is connected by adopting threads or clamping grooves; the left side surface and the right side surface of the impeller are provided with clamping bulges and external clamping devices.

2. The enhanced horizontal slurry pump of claim 1 wherein: the joint of the driving shaft and the impeller is provided with a stepped shaft, and the diameter A of the end part of the stepped shaft is not smaller than 60 mm.

3. The enhanced horizontal slurry pump of claim 1 wherein: the clamping bulge arranged on the left side surface of the impeller is clamped and fixed with the inner bulge on the inner supporting surface to restrict the impeller from moving radially.

4. The enhanced horizontal slurry pump of claim 1 wherein: the pump chamber is internally provided with an axial positioning groove, and a clamping protrusion on the right side surface of the impeller is in plug-in fit with the axial positioning groove.