CN216077559U

CN216077559U - Quick-mounting screw pump

Info

Publication number: CN216077559U
Application number: CN202121175493.4U
Authority: CN
Inventors: 郝之非
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2022-03-18
Anticipated expiration: 2031-05-28

Abstract

The utility model discloses a quick-mounting screw pump which comprises a pump body, a screw rod and a shaft frame, wherein the screw rod is arranged in the pump body, the shaft frame is of a sleeve type structure and is arranged at two end parts of the pump body, two ends of a screw rod shaft extend out of the shaft frame, the screw pump further comprises a mechanical seal movable ring assembly and a mechanical seal static ring assembly, the mechanical seal movable ring assembly is arranged on the screw rod and is positioned at one end of the inner side of the screw rod extending into the shaft frame, the mechanical seal static ring assembly is arranged on the outer side (the side far away from the pump body) of the shaft frame and is sleeved on the screw rod, one end of a static ring friction surface (mirror surface) of the mechanical seal static ring assembly is pressed on the surface part of the movable ring friction surface (mirror surface) of the mechanical seal movable ring assembly, and the mechanical seal static ring assembly is tightly connected with the outer side of the shaft frame through bolts. The utility model discloses a simple structure, the installation is dismantled conveniently and is avoided mechanical seal collision to damage when the installation.

Description

Quick-mounting screw pump

Technical Field

The utility model relates to the technical field of pump bodies, in particular to a quick-mounting type screw pump.

Background

The production assembly, the maintenance and the disassembly and assembly processes of the screw pump (screw compressor) have complex operation and great difficulty. Only taking a double-screw pump as an example, the existing mechanical seal static ring assembly is arranged between a shaft bracket and a pump body and is assembled on the shaft bracket (the inner side of the shaft bracket) in advance, and then the shaft bracket is hoisted to penetrate through two screw pump shafts to be connected with the pump body. Difficult and time consuming. The mechanical seals on the pump are wearing parts and need to be maintained and replaced frequently, and particularly when only one mechanical seal is found to be maintained, the shaft bracket also needs to be detached. If the pump is used without hoisting equipment, the difficulty of the maintenance, the disassembly and the assembly process is very high.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a quick-mounting screw pump to solve the problems of assembly collision damage and difficulty in assembly and disassembly.

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

a kind of fast-assembling type screw pump, including pump casing, threaded spindle and shaft bracket, the threaded spindle is installed in the pump casing, the said shaft bracket is the telescopic structure and is installed in both ends of the pump casing, both ends of the threaded spindle stretch out from inside of shaft bracket, characterized by, also include mechanical seal rotating ring assembly and mechanical seal stationary ring assembly;

the mechanical seal movable ring assembly is arranged on the screw rod and positioned at one end of the screw rod extending into the shaft bracket, and the mechanical seal static ring assembly is arranged on one side of the shaft bracket far away from the pump body and sleeved on the screw rod;

the static ring friction surface of the mechanical seal static ring component is pressed against the moving ring friction surface of the mechanical seal moving ring component, and the mechanical seal static ring component is tightly connected with the outer side of the shaft frame through bolts.

On the basis of the technical scheme, the utility model also provides the following optional technical scheme:

in one alternative: and a gasket is arranged between the mechanical seal movable ring assembly and the inner side part of the shaft frame.

In one alternative: the mechanical seal movable ring assembly comprises a shaft sleeve, a spring seat, a push ring and a movable ring, wherein the shaft sleeve is arranged on the screw rod, the spring seat ring is sleeved at the shaft shoulder of the shaft sleeve and is tightly fixed on the shaft sleeve through a set screw, the movable ring is arranged at one end of the shaft sleeve far away from the pump body, and the push ring is arranged on the shaft sleeve in a sliding manner and is connected with the spring seat and the push ring through a spring surrounding the outside of the shaft sleeve.

In one alternative: sealing rings are arranged between the movable ring and the shaft sleeve and at the port of the shaft sleeve facing the pump body.

In one alternative: the mechanical seal static ring component comprises a static ring, a static ring seat and an end cover part, the static ring component is sleeved on the screw rod, the outer wall of the static ring component is in matched contact with the inner wall of the shaft bracket, the static ring is installed inside the end part of the static ring seat facing the mechanical seal movable ring component, a static ring sealing ring is arranged between the static ring and the static ring seat, the static ring seat sealing ring is embedded on the outer ring wall of the static ring seat, and the end cover part is arranged at the end part of the static ring seat, far away from the pump body, and is fastened with the outer side part of the shaft bracket through bolts.

Compared with the prior art, the utility model has the following beneficial effects:

the internal structure of the shaft bracket is changed, the screw rod is meshed with the pump body during assembly, the shaft brackets at two ends are connected with the pump body, the sealing gasket, the mechanical sealing movable ring assembly and the mechanical sealing static ring assembly are sequentially arranged outside the shaft brackets, the mechanical sealing static ring assembly is small in size and light in weight, only one piece of manual work is needed to be installed outside the shaft brackets, and the fact that the mechanical sealing static ring assembly does not collide with the shaft of the screw rod is easily achieved. When the pump is repaired and disassembled, the static ring component is firstly disassembled from the outer side of the shaft frame, and then the movable ring component is disassembled along the pump shaft, so that any one part of the mechanical seal can be replaced.

Drawings

Fig. 1 is a schematic view of an overall structure of the screw pump according to an embodiment of the present invention.

FIG. 2 is a schematic structural view of a mechanical seal rotating ring assembly according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a mechanical seal static ring assembly in an embodiment of the utility model.

Notations for reference numerals: the pump body 1, the screw rod 2, the shaft bracket 3, the gasket 4, the mechanical seal movable ring assembly 5, the shaft sleeve 51, the seal ring 52, the spring seat 53, the fastening screw 54, the spring 55, the push ring 56, the movable ring 58, the mechanical seal stationary ring assembly 6, the stationary ring 61, the stationary ring seal ring 62, the stationary ring seat 63 and the stationary ring seat seal ring 64.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments; in the drawings or the description, the same reference numerals are used for similar or identical parts, and the shape, thickness or height of each part may be enlarged or reduced in practical use. The examples are given solely for the purpose of illustration and are not intended to limit the scope of the utility model. Any obvious modifications or variations can be made to the present invention without departing from the spirit or scope of the present invention.

Wherein, the drawing of fig. 1 is a left-right symmetrical view, wherein the left side only shows the appearance of the device;

in one embodiment, as shown in fig. 1, a quick-mounting screw pump includes a pump body 1, a screw rod 2 and a shaft frame 3, the screw rod 2 is installed inside the pump body 1, the shaft frame 3 is of a sleeve type structure and is installed at both ends of the pump body 1, both ends of the screw rod 2 extend out from the inside of the shaft frame 3, and further includes a mechanical seal moving ring assembly 5 and a mechanical seal static ring assembly 6, the mechanical seal moving ring assembly 5 is installed on the screw rod 2 and is located at one end of the screw rod extending into the inside of the shaft frame 3, the mechanical seal static ring assembly 6 is installed at the outside of the shaft frame 3 (the side far from the pump body 1) and is sleeved on the screw rod 2, a static ring friction surface (mirror surface) of the mechanical seal static ring assembly 6 is pressed against the friction surface (mirror surface) face of the mechanical seal moving ring assembly 5, and the mechanical seal static ring assembly 6 is fastened and connected with the outside of the shaft frame 3 through bolts;

in the implementation of this embodiment, pack into the pump body 1 with the screw rod 2 that meshes earlier in, overlap pedestal 3 on the screw rod 2 and install at the both ends of the pump body 1 again, place mechanical seal rotating ring subassembly 5 inside pedestal 3 and overlap on screw rod 2, and fix with set screw tightly, extrude between pedestal 3 and the pump body 1 with mechanical seal rotating ring subassembly 5 through mechanical seal stationary ring subassembly 6 at last, pass through bolt-up connection with pedestal 3 outside portion with mechanical seal stationary ring subassembly 6 end cap portion. The installation mode avoids the problem that the mechanical seal static ring assembly 6 is easy to damage when passing through the screw rod 2, and is convenient to disassemble and maintain;

in one embodiment, as shown in fig. 1, a gasket 4 is further disposed between the mechanical seal moving ring assembly 5 and the side portion of the shaft bracket 3, and the gasket 4 is configured to perform a better sealing function and an elastic installation and prevent the mechanical seal moving ring assembly 5 and the shaft bracket 3 from being worn;

in one embodiment, as shown in fig. 2, the mechanical seal moving ring assembly 5 includes a shaft sleeve 51, a spring seat 53, a push ring 56 and a moving ring 58, the shaft sleeve 51 is mounted on the screw rod 2, the spring seat 53 is sleeved on a shaft shoulder of the shaft sleeve 51 and is fastened on the shaft sleeve by a set screw 54, the moving ring 58 is mounted at one end of the shaft sleeve 51 away from the pump body 1, the push ring 56 is slidably sleeved on the shaft sleeve 51, and the spring seat 53 and the push ring 56 are connected by a spring 55 surrounding the outside of the shaft sleeve 51, by the arrangement of the spring 55, when the mechanical seal stationary ring assembly 6 abuts against the moving ring 58, a certain space can be reserved, so that the mechanical seal stationary ring assembly 6 and the shaft frame 3 can be fixed in the case of dimensional errors, and the elasticity of the spring 55 can play a certain role of buffering;

in one embodiment, as shown in fig. 2, a sealing ring 52 is further provided between the movable ring 58 and the shaft sleeve 51 and at a port of the shaft sleeve 51 facing the pump body 1 to perform a sealing function;

in one embodiment, as shown in fig. 3, the mechanical seal stationary ring assembly 6 includes a stationary ring 61, a stationary ring seat 63 and an end cover portion, the stationary ring assembly 6 is sleeved on the screw rod 2, and the outer wall of the stationary ring assembly 6 is in fit contact with the inner wall of the shaft bracket 3, the stationary ring 61 is installed inside the end portion of the stationary ring seat 63 facing the mechanical seal moving ring assembly 5, a stationary ring seal ring 62 is arranged between the stationary ring 61 and the stationary ring seat 63, a stationary ring seat seal ring 64 is embedded on the outer annular wall of the stationary ring seat 63, the end cover portion is arranged at the end portion of the stationary ring seat 63 far away from the pump body 1 and is fastened with the outer side portion of the shaft bracket 3 through bolts, and the stationary ring seat seal ring 64 is arranged to increase the sealing performance between the stationary ring seat 63 and the shaft bracket 3;

the above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present disclosure, and all the changes or substitutions should be covered within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. A kind of fast-assembling type screw pump, including pump casing, threaded spindle and shaft bracket, the threaded spindle is installed in the pump casing, the said shaft bracket is the telescopic structure and is installed in both ends of the pump casing, both ends of the threaded spindle stretch out from inside of shaft bracket, characterized by, also include mechanical seal rotating ring assembly and mechanical seal stationary ring assembly;

2. The quick load screw pump of claim 1, further comprising a gasket disposed between the mechanical seal rotating ring assembly and the inner side of the frame.

3. The packaged screw pump of claim 1, wherein the mechanical seal rotating ring assembly comprises a sleeve, a spring seat, a push ring and a rotating ring, the sleeve is mounted on the screw, the spring seat ring is sleeved on a shoulder of the sleeve and is fastened on the sleeve by a set screw, the rotating ring is mounted at one end of the sleeve far away from the pump body, the push ring sliding sleeve is mounted on the sleeve, and the spring seat and the push ring are connected by a spring surrounding the outer part of the sleeve.

4. A ready-package screw pump according to claim 3, wherein sealing rings are provided between the dynamic ring and the sleeve and at the end of the sleeve facing the pump body.

5. The quick assembling type screw pump according to any one of claims 1 to 4, wherein the mechanical seal stationary ring assembly includes a stationary ring, a stationary ring seat and an end cap, the stationary ring seat is sleeved on the screw rod and the outer wall of the stationary ring seat is in fit contact with the inner wall of the shaft bracket, the stationary ring is installed inside the end portion of the stationary ring seat facing the mechanical seal moving ring assembly, a stationary ring seal ring is arranged between the stationary ring and the stationary ring seat, a stationary ring seat seal ring is embedded on the outer ring wall of the stationary ring seat, the end cap is arranged at the end portion of the stationary ring seat far away from the pump body and is fastened with the outer side of the shaft bracket through bolts, and the stationary ring seat is further provided with fabrication holes for facilitating the assembly and disassembly of the mechanical seal moving ring assembly.