CN219472401U

CN219472401U - Novel adjust impeller and wear ring clearance device

Info

Publication number: CN219472401U
Application number: CN202320619070.XU
Authority: CN
Inventors: 李发明; 邵博; 李宝
Original assignee: Dalian Yichen Fluid Equipment Co ltd
Current assignee: Dalian Yichen Fluid Equipment Co ltd
Priority date: 2023-03-27
Filing date: 2023-03-27
Publication date: 2023-08-04
Anticipated expiration: 2033-03-27

Abstract

The utility model discloses a novel device for adjusting the gap between an impeller and a wear-resistant ring, which comprises a pump shell, a wear-resistant ring and an impeller which are sequentially arranged from left to right, wherein the pump shell is connected with the wear-resistant ring through a plurality of bolts, sealing rings are sleeved on the bolts, the sealing rings are arranged between the pump shell and the wear-resistant ring, the right end of each bolt is screwed with the wear-resistant ring through threads, the left end of each bolt penetrates through the pump shell and is fixed through a fastening nut, the technical field of centrifugal pumps is related to, the sealing rings are fixed on the bolts, the tail ends of the bolts are in threaded connection with the wear-resistant ring, after the fastening nut is loosened, the position of the wear-resistant ring can be adjusted by rotating the bolts, the influence of operation on the sealing performance of the centrifugal pump is reduced, and meanwhile, sealing rings are arranged between the inner contact surface and the outer contact surface of the pump shell and the wear-resistant ring, so that the sealing performance of the centrifugal pump is further improved.

Description

Novel adjust impeller and wear ring clearance device

Technical Field

The utility model belongs to the technical field of centrifugal pumps, and particularly relates to a novel device for adjusting the gap between an impeller and a wear-resistant ring.

Background

A centrifugal pump is a pump that conveys liquid by centrifugal force generated when an impeller rotates. The pump mainly comprises an impeller, a pump body, a pump shaft, a bearing, a sealing ring, a stuffing box and the like. The main characteristics of the device include: compact structure, wide range of flow lift, uniform flow, stable operation, small vibration, lower maintenance and repair cost, etc.

A wear-resistant ring is arranged between an impeller and a pump body of the existing centrifugal pump, so that the cost of the pump is reduced, and the processing and the replacement are convenient. The size of the gap between the impeller and the front wear plate directly affects the performance and use of the pump. On the premise of meeting the working condition, the smaller the gap is, the higher the pump efficiency is, and therefore the smaller the gap is, the better the gap is.

However, the existing device for adjusting the gap between the impeller and the wear-resistant ring has defects, such as an open impeller front wear-resistant plate adjusting device of a centrifugal pump with application number of 2021207755008, which adjusts the gap between the impeller and the wear-resistant ring by loosening the screw for fixing the pump body and the wear-resistant plate, so that the tightness of the screw for fixing the pump body and the wear-resistant plate is poor, and the existing pump body and the wear-resistant plate are not sufficiently designed in sealing structure, so that the centrifugal pump is poor.

Disclosure of Invention

The utility model aims to provide a novel device for adjusting the clearance between an impeller and a wear-resistant ring, so as to solve the problems in the background art.

The technical scheme adopted by the utility model is as follows:

the utility model provides a novel adjust impeller and wear ring clearance device, includes pump case, wear ring, impeller that sets gradually from left to right, link to each other through a plurality of bolts between pump case and the wear ring, the cover is equipped with the sealing ring on the bolt, the sealing ring sets up between pump case and wear ring, adopt the screw thread to connect soon between bolt right-hand member and the wear ring, the bolt left end passes the pump case to it is fixed through fastening nut.

Preferably, the sealing ring is fixedly connected with the bolt.

Preferably, the bolt comprises a fastening section on the left side of the sealing ring and an adjusting section on the right side of the sealing ring, the adjusting section is in threaded connection with the wear-resistant ring, the fastening section penetrates through the pump shell, and one end, far away from the adjusting section, of the fastening section is in threaded connection with the fastening nut.

Preferably, the bolt head is sized smaller than the fastening nut inner diameter.

Preferably, the pump shell is in sealing connection with the inner contact surface and the outer contact surface of the wear-resistant ring through sealing rings.

In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:

according to the centrifugal pump, the sealing ring is fixed on the bolt, the tail end of the bolt is in threaded connection with the wear-resistant ring, after the fastening nut is loosened, the position of the wear-resistant ring can be adjusted by rotating the bolt, the fastening nut is screwed down after adjustment is completed, the influence of operation on the sealing performance of the centrifugal pump is reduced, and meanwhile, the sealing rings are arranged between the inner contact surface and the outer contact surface of the pump shell and the wear-resistant ring, so that the sealing performance of the centrifugal pump is further improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is an enlarged view of the structure at A of the present utility model;

FIG. 3 is an enlarged view of the structure at B of the present utility model;

FIG. 4 is a schematic view of a bolt structure according to the present utility model;

in the figure: 1. a pump housing; 2. a wear ring; 3. an impeller; 4. a bolt; 41. a fastening section; 42. a regulating section; 5. a seal ring; 6. a fastening nut; 7. and (3) sealing rings.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Example 1:

the specific structure of the novel device for adjusting the gap between the impeller and the wear-resistant ring is shown in fig. 1-4, and comprises a pump shell 1, a wear-resistant ring 2 and an impeller 3 which are sequentially arranged from left to right, wherein the pump shell 1 is connected with the wear-resistant ring 2 through a plurality of bolts 4, sealing rings 5 are sleeved on the bolts 4, the sealing rings 5 are arranged between the pump shell 1 and the wear-resistant ring 2, the right ends of the bolts 4 are screwed with the wear-resistant ring 2 through threads, and the left ends of the bolts 4 penetrate through the pump shell 1 and are fixed through fastening nuts 6.

Further, the sealing ring 5 is fixedly connected with the bolt 4.

Further, the bolt 4 comprises a fastening section 41 on the left side of the sealing ring 5 and an adjusting section 42 on the right side of the sealing ring 5, the adjusting section 42 is screwed with the wear-resistant ring 2, the fastening section 41 penetrates through the pump shell 1, and one end, away from the adjusting section 42, of the fastening section 41 is screwed with the fastening nut 6.

Further, the head size of the bolt 4 is smaller than the inner diameter of the fastening nut 6.

Further, the head size of the bolt 4 is smaller than the outer diameter of the fastening section 41.

Furthermore, the inner contact surface and the outer contact surface of the pump shell 1 and the wear-resistant ring 2 are in sealing connection through the sealing ring 7, so that the sealing performance of the centrifugal pump is further improved.

1-4, wherein the bolt 4 is a prefabricated product, the sealing ring 5 and the bolt 4 are of an integrated structure, during installation, firstly, the wear-resistant ring 2 is installed on a main shaft and positioned at the left side of the impeller 3, then the bolt 4 is screwed on the right side of the wear-resistant ring 2, the adjusting section 42 is screwed into a screw hole at the left side of the wear-resistant ring 2, a gasket is sleeved on the fastening section 41, the pump shell 1 is covered, and because the head size of the bolt 4 is smaller than the outer diameter of the fastening section 41, the head of the bolt 4 can pass through the screw hole on the pump shell 1, then the fastening nut 6 is screwed, and the assembly process is completed;

when the clearance between the impeller and the wear-resistant ring is adjusted, the fastening nut 6 is loosened at first, the bolt 4 is rotated, the bolt 4 rotates out of a screw hole of the wear-resistant ring 2 by a proper distance, and then the fastening nut 6 is screwed down, so that the influence on the sealing performance is reduced because the sealing ring 5 and the bolt 4 are of an integrated structure.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. Novel adjust impeller and wear ring clearance device, its characterized in that: the novel wear-resistant pump comprises a pump shell (1), a wear-resistant ring (2) and an impeller (3) which are sequentially arranged left and right, wherein the pump shell (1) is connected with the wear-resistant ring (2) through a plurality of bolts (4), a sealing ring (5) is sleeved on the bolts (4), the sealing ring (5) is arranged between the pump shell (1) and the wear-resistant ring (2), the right end of the bolts (4) is screwed with the wear-resistant ring (2) through threads, and the left end of the bolts (4) penetrates through the pump shell (1) and is fixed through fastening nuts (6).

2. A novel device for adjusting the clearance between an impeller and a wear ring as claimed in claim 1, wherein: the sealing ring (5) is fixedly connected with the bolt (4).

3. A novel device for adjusting the clearance between an impeller and a wear ring as claimed in claim 2, wherein: the bolt (4) comprises a fastening section (41) on the left side of the sealing ring (5) and an adjusting section (42) on the right side of the sealing ring (5), the adjusting section (42) is screwed with the wear-resistant ring (2), the fastening section (41) penetrates through the pump shell (1), and one end, far away from the adjusting section (42), of the fastening section (41) is screwed with the fastening nut (6).

4. A novel device for adjusting the clearance between an impeller and a wear ring as claimed in claim 1, wherein: the head size of the bolt (4) is smaller than the inner diameter of the fastening nut (6).

5. A novel device for adjusting the clearance between an impeller and a wear ring as claimed in claim 1, wherein: the pump shell (1) is in sealing connection with the inner contact surface and the outer contact surface of the wear-resistant ring (2) through a sealing ring (7).