CN221003231U - Novel throat lining structure - Google Patents

Abstract

The utility model relates to the technical field of throat bushings, and discloses a novel throat bushing structure, which comprises a bushing main body and a fixing structure, wherein the fixing structure is connected to the outer wall of the bushing main body in a threaded manner, the fixing structure comprises a nut, a first thread is arranged on the inner wall of the nut, and a plurality of friction blocks are fixedly connected to the outer wall of one surface of the nut, which is close to the first thread. According to the utility model, through the arrangement of the nut, when the bushing main body is required to be arranged on the pump body in the running process of the bushing main body, the bushing is sleeved between the rotating shaft and the bearing, the nut is screwed on the bushing, the bushing main body fills and fixes the gap between the rotating shaft and the bearing, the bushing main body is arranged between the rotating shaft and the bearing, certain vibration is generated when the pump body runs, and when the nut is required to be loosened, the friction force is increased to the loosening path of the nut by the friction block, so that the effect of limiting and fixing again is realized, and the effect of effectively limiting and fixing the bushing main body on the pump body is achieved.

Description

Novel throat lining structure

Technical Field

The utility model relates to the technical field of throat lining equipment, in particular to a novel throat lining structure.

Background

In the centrifugal pump flushing scheme of Plan21, 23, 53A, 53B and 62 systems, a throat lining is additionally arranged between the impeller and the mechanical seal, so that the effects of throttling and reducing pressure of a mechanical seal cavity are achieved, the normal operation of the mechanical seal is ensured, and the service life of the mechanical seal is prolonged. Particularly for the environment of delivering high-temperature high-pressure fluid medium, the pump is positioned at a core station, and whether the design of the throat bush is reasonable plays a vital role in mechanical sealing and operation of the pump. Once the mechanical seal fails, the normal operation of the unit is severely restricted, and the systematic production is stopped.

The application number is CN202121607749.4, a novel throat lining structure is disclosed, the novel throat lining structure comprises a lining body, the inner side wall of the lining body is provided with a plurality of grooves, the outside of the lining body is sleeved with a pump cover, and a gap is reserved between the inner side wall of the pump cover and the outer side wall of the lining body; the mechanical seal can be in a low-pressure medium environment to the greatest extent, the service life of the mechanical seal is prolonged, and the mechanical seal has very important effects of preventing and resisting friction and locking between the impeller and the throat lining.

The novel throat liner structure disclosed in the above document has the following defects: the pump body can bring vibrations when the operation, only sets up a plurality of recess at the bush inner wall, and the pump body can drive the screw thread structure of connection under vibrations and become flexible, and this equipment can't play certain fixed action to the route that this structure becomes flexible, makes this bush unable play maximum effect.

Therefore, after the existing novel throat bush structure is installed, vibration can be generated when the pump body operates, the connected threaded structure is driven to loosen under the vibration, the device does not have the function of fixing a loose path of the structure, and the function of effectively fixing the throat bush on the pump body is provided by improving the existing defects.

Disclosure of Invention

The present utility model is directed to a novel throat liner structure to solve the above-mentioned problems set forth in the background art.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

The utility model relates to a novel throat lining structure which comprises a lining main body and a fixing structure, wherein the fixing structure is in threaded connection with the outer wall of the lining main body, the fixing structure comprises a nut, a first thread is arranged on the inner wall of the nut, and a plurality of friction blocks are fixedly connected with the outer wall of one surface of the nut, which is close to the first thread. The purpose that sets up like this is, when the bush main part operation in-process, when the bush main part needs to be installed at the pump body, first with the bush cover between pivot and bearing, twist the nut, with nut threaded connection on the bush, make the bush main part fill and fix the clearance between pivot and the bearing, install the bush main part between pivot and bearing, the friction disc that sets up in the nut is in the reverse side of screw thread one, can produce certain vibrations when the pump body operation, when the nut will become flexible, utilize the friction disc to increase frictional force to the route that the nut is not hard up, carry out the effect of spacing fixedly again, the effect that the bush main part is effective spacing fixedly to the pump body has been reached.

Further, the bushing body comprises a bushing, and the surface of the bushing is a conical surface. The purpose of setting like this is, at bush main part operation in-process, cup joints the tip of bush on the inner wall of bearing along the tapering, makes bush and bearing closely laminate, effectively reduces the clearance increase between pivot and the bearing.

Further, a second thread is formed on the outer wall of one side, close to the nut, of the bushing, and the bushing is in threaded connection with the nut. The purpose that sets up like this is, at bush main part operation in-process, can make the bush utilize screw thread two to carry out threaded connection with the nut, plays effectual fixed action to the bush, when the bush main part damages, loosens the nut, takes out locking plate and bearing in proper order, can take off the bush from the pivot, makes the bush main part dismantle the renew.

Further, a bearing is sleeved on the outer wall of the bushing, and the surface of the bearing is a conical surface. The purpose of setting like this is, in the bush main part operation in-process, cup joints the tip of bearing on the outer wall of bush along the tapering, makes bush and bearing closely laminate.

Further, a rotating shaft is sleeved on the inner wall of the bushing. The purpose of setting like this is, at bush main part operation in-process, when the bush main part needs to be installed at the pump body, cup joints bush main part, fixed knot constructs and pivot in proper order on the outer wall of pivot.

Further, a locking plate is sleeved on the outer wall of the bushing, and the locking plate is positioned between the nut and the bearing. The purpose that sets up like this is, at bush main part operation in-process, and the relation of connection of bush and bearing is not hard up easily, and usable locking plate carries out spacing effect with bush and bearing, and the nut of tightening again carries out effective fixation.

The utility model has the following beneficial effects:

(1) According to the utility model, through the arrangement of the nut, when the bushing main body is required to be arranged on the pump body in the running process of the bushing main body, the bushing is sleeved between the rotating shaft and the bearing, the nut is screwed on the bushing, the bushing main body fills and fixes the gap between the rotating shaft and the bearing, the bushing main body is arranged between the rotating shaft and the bearing, the friction block arranged in the nut is positioned on the reverse side of the first thread, certain vibration is generated when the pump body runs, and when the nut is required to loosen, the friction force is increased to the loosening path of the nut by the friction block, so that the effect of limiting and fixing again is realized, and the effect of effectively limiting and fixing the bushing main body on the pump body is achieved.

(2) According to the utility model, through the arrangement of the threads, the bushing can be in threaded connection with the nut by utilizing the second thread in the running process of the bushing main body, an effective fixing effect is achieved on the bushing, when the bushing main body is damaged, the nut is loosened, the locking plate and the bearing are sequentially taken out, and the bushing can be taken down from the rotating shaft, so that the bushing main body is detached and replaced.

Of course, it is not necessary for any one product to practice the utility model to achieve all of the advantages set forth above at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of 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 utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

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

FIG. 2 is a schematic side view of the present utility model;

FIG. 3 is a schematic view of the internal structure of the present utility model;

FIG. 4 is a schematic cross-sectional view of the present utility model;

in the drawings, the list of components represented by the various numbers is as follows:

in the figure: 1. a bushing body; 101. a bushing; 102. a second thread; 2. a fixed structure; 201. a locking plate; 202. a nut; 203. a first thread; 204. a friction block; 3. a rotating shaft; 4. and (3) a bearing.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model is a novel throat lining structure, which comprises a lining main body 1 and a fixing structure 2, wherein the fixing structure 2 is in threaded connection with the outer wall of the lining main body 1, the fixing structure 2 comprises a nut 202, a first thread 203 is arranged on the inner wall of the nut 202, and a plurality of friction blocks 204 are fixedly connected with the outer wall of one surface of the nut 202, which is close to the first thread 203. The purpose of setting like this is, when liner body 1 operation in-process, when liner body 1 needs to be installed at the pump body, first with liner 101 cover between pivot 3 and bearing 4, twist nut 202, with nut 202 threaded connection on liner 101, make liner body 1 fill and fix the clearance between pivot 3 and the bearing 4, install liner body 1 between pivot 3 and bearing 4, the clutch block 204 that sets up in the nut 202 is in the reverse side of screw thread 203, can produce certain vibrations when the pump body is in operation, when nut 202 is to become flexible, utilize the clutch block 204 to increase frictional force to the route that nut 202 becomes flexible, carry out spacing fixed effect again, the effect that liner body 1 realized effective spacing fixed to the pump body has been reached.

The bushing body 1 includes a bushing 101, and the surface of the bushing 101 is tapered. The purpose of this setting is, in the operation of bush main part 1, cup joints the tip of bush 101 on the inner wall of bearing 4 along the tapering, makes bush 101 and bearing 4 closely laminate, effectively reduces the clearance increase between pivot 3 and the bearing 4.

The outer wall of one side of the bushing 101, which is close to the nut 202, is provided with a second thread 102, and the bushing 101 is in threaded connection with the nut 202. The purpose of setting like this is, at bush main part 1 operation in-process, can make bush 101 utilize screw thread two 102 to carry out threaded connection with nut 202, plays effectual fixed action to bush 101, when bush main part 1 damages, loosens nut 202, takes out locking plate 201 and bearing 4 in proper order, can take off bush 101 from pivot 3, makes bush main part 1 dismantle the renew.

The outer wall of the bushing 101 is sleeved with a bearing 4, and the surface of the bearing 4 is a conical surface. The purpose of this arrangement is to allow the small end of the bearing 4 to be fitted over the outer wall of the bushing 101 in a tapered manner during operation of the bushing body 1, so that the bushing 101 is in close contact with the bearing 4.

The inner wall of the bushing 101 is sleeved with a rotating shaft 3. The purpose of setting up like this is, in bush main part 1 operation in-process, when bush main part 1 needs to install at the pump body, cup joints bush main part 1, fixed knot constructs 2 and pivot 3 in proper order on the outer wall of pivot 3.

A locking piece 201 is sleeved on the outer wall of the bushing 101, and the locking piece 201 is positioned between the nut 202 and the bearing 4. The purpose of this arrangement is that during the operation of the bushing body 1, the connection between the bushing 101 and the bearing 4 is not firm and is easy to loosen, and the locking plate 201 can be used to limit the bushing 101 and the bearing 4, and then the nut 202 is screwed down to fix effectively.

When the bushing body 1 is used, when the bushing body 1 needs to be installed in a pump body, the bushing 101 is sleeved between the rotating shaft 3 and the bearing 4, the nut 202 is screwed, the nut 202 is connected to the bushing 101 in a threaded mode, the gap between the rotating shaft 3 and the bearing 4 is filled and fixed by the bushing body 1, the bushing body 1 is installed between the rotating shaft 3 and the bearing 4, the friction block 204 arranged in the nut 202 is positioned on the reverse side of the thread one 203, certain vibration is generated when the pump body runs, friction force is increased by using a path of the friction block 204 for loosening the nut 202 when the nut 202 is required to loosen, and the effect of limiting and fixing again is achieved, so that the effect of effectively limiting and fixing the pump body 1 is achieved.

The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.

Claims (6)

1. The utility model provides a novel throat bush structure, includes bush main part (1) and fixed knot constructs (2), its characterized in that: the fixing structure (2) is in threaded connection with the outer wall of the bushing main body (1), the fixing structure (2) comprises a nut (202), a first thread (203) is arranged on the inner wall of the nut (202), and a plurality of friction blocks (204) are fixedly connected with the outer wall of one surface of the nut (202) close to the first thread (203).

2. A novel throat insert structure according to claim 1, wherein: the bushing body (1) comprises a bushing (101), and the surface of the bushing (101) is a conical surface.

3. A novel throat insert structure according to claim 2, wherein: the bushing (101) is provided with a second thread (102) on the outer wall of one side, close to the nut (202), of the bushing, and the bushing (101) is in threaded connection with the nut (202).

4. A novel throat insert structure according to claim 2, wherein: the outer wall of the bushing (101) is sleeved with a bearing (4), and the surface of the bearing (4) is a conical surface.

5. A novel throat insert structure according to claim 2, wherein: the inner wall of the bushing (101) is sleeved with a rotating shaft (3).

6. A novel throat insert structure according to claim 2, wherein: and a locking plate (201) is sleeved on the outer wall of the bushing (101), and the locking plate (201) is positioned between the nut (202) and the bearing (4).