CN111043322A

CN111043322A - Structure for cleaning sealing surfaces of valve core and valve seat

Info

Publication number: CN111043322A
Application number: CN201911363872.3A
Authority: CN
Inventors: 王朝鹤
Original assignee: Individual
Current assignee: Sichuan Feiqiu Group Co ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-04-21
Anticipated expiration: 2039-12-26
Also published as: CN111043322B

Abstract

The invention provides a structure for cleaning sealing surfaces of a valve core and a valve seat, which comprises an installation disc, a valve body and a valve cover, wherein the installation disc is arranged between the valve core and the lower valve cover; the driving shaft is coaxially arranged on the mounting disc, and one end of the driving shaft penetrates through the lower valve cover; a cleaning part is arranged at one end part of the third connecting rod; the third connecting rod is hinged and drives the cleaning part to be arranged towards the valve core through a torsion spring; the second connecting rod and the first connecting rod are respectively arranged between the mounting disc and the lower valve cover; when the hinged end of the second connecting rod and the hinged end of the first connecting rod are abutted to the bottom of the lower valve cover, the second connecting rod can push the third connecting rod to enable the cleaning end to swing towards the inner side of the valve core. Can in time clear up the small particle impurity that bonds on the sealed face of case and the sealed face of disk seat through disk seat and case clearance part, prevent that impurity from bonding and piling up and causing sealed face to damage on sealed face, and then reduce the interior degree of leaking of valve, improve the life of valve, reduce the production maintenance cost.

Description

Structure for cleaning sealing surfaces of valve core and valve seat

Technical Field

The invention relates to the field of valves, in particular to a structure for cleaning sealing surfaces of a valve core and a valve seat.

Background

Valves are indispensable as important components in pipelines. The stop valve is used for controlling the on-off of the pipeline, and further has high requirement on the internal leakage degree between the valve core and the valve seat. In-service use is because there are many impurities in the fluid medium in the pipeline, these impurities mostly are unable small granule of filtering, can bond on the sealed face of disk seat and case under high temperature and high pressure, and the crimping between sealed face of rethread, the granule can cause sealed face pitting, consequently, leads to leaking in the valve in the time of the year, and then influences production and goes on to increase the maintenance cost. In view of the above, a structure for cleaning sealing surfaces of a valve core and a valve seat is designed.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the problem of impurity among the fluid medium adhere to sealed face is solved, and then reduce the damage of the sealed face of disk seat and the sealed face of case, reduce the valve internal leakage degree.

The technical scheme adopted by the invention for solving the technical problems is as follows: a structure for cleaning sealing surfaces of a valve core and a valve seat comprises an installation disc, a valve body and a valve seat, wherein the installation disc is arranged between the valve core and a lower valve cover and is coaxial with the valve core; the driving shaft is coaxially arranged on the mounting disc, and one end of the driving shaft penetrates through the lower valve cover; wherein the driving shaft is connected with the lower valve cover in a sealing way; the driving shaft can drive the mounting disc to axially move and circumferentially rotate; a cleaning part is arranged at one end part of the third connecting rod; the third connecting rod is hinged to the mounting disc and drives the cleaning part end to swing towards the outer side of the valve core through a torsion spring, so that the cleaning part is arranged towards the valve core and extends to the position corresponding to the sealing surface of the valve core and the sealing surface of the valve; the end parts of the second connecting rod and the first connecting rod are hinged and are respectively arranged between the mounting disc and the lower valve cover; the first connecting rod is hinged on the driving shaft; the second connecting rod is hinged to the third connecting rod, and when the hinged end of the second connecting rod and the hinged end of the first connecting rod are abutted to the bottom of the lower valve cover, the second connecting rod can push the third connecting rod to enable the cleaning end to swing towards the inner side of the valve core.

Preferably, the peripheral wall of the mounting plate is provided with a placing opening, and the second connecting rod pushes the third connecting rod to enable the third connecting rod and the cleaning part to be placed in the placing opening.

Preferably, an abutting portion that restricts a range of oscillation of the third link to an outside of the valve body is provided in the accommodating port.

Preferably, the bottom of the lower valve cover is provided with an annular convex pressing platform, and the convex pressing platform is in threaded connection with the lower valve cover.

Preferably, the lower valve cover is provided with a motor, and an output shaft of the motor is in transmission connection with the driving shaft.

Preferably, an installation part is arranged on the motor, the motor is installed on the outer side of the lower valve cover through the installation part, the installation part is a telescopic rod, and scales are marked on the telescopic rod.

The valve seat and the valve core cleaning component can clean the valve core sealing surface and tiny particle impurities adhered on the valve seat sealing surface in time, prevent the impurities from adhering and accumulating on the sealing surface to cause the damage of the sealing surface, further reduce the internal leakage degree of the valve, prolong the service life of the valve and reduce the production and maintenance cost.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of a cleaning mechanism with the valve open according to an embodiment of the present invention;

FIG. 2 is a schematic view of the partial cross-sectional configuration of FIG. 1;

FIG. 3 is a schematic perspective view of the FIG. 1 state;

FIG. 4 is a schematic structural diagram of a sealing surface being cleaned according to an embodiment of the present invention;

in the figure: 1-mounting disc, 1.1-placing port, 2-driving shaft, 3.1-first connecting rod, 3.2-second connecting rod, 3.3-third connecting rod, 3.4-cleaning part, 4-abutting part, 5-motor, 5.1-mounting part, a-valve seat, a 1-valve seat sealing surface, b-valve core, b 1-valve core sealing surface, c-lower valve cover and c 1-convex pressing platform.

Detailed Description

The above-described scheme is further illustrated below with reference to specific examples. It is to be understood that these examples are for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention. The conditions used in the examples may be further adjusted according to the conditions of the particular manufacturer, and the conditions not specified are generally the conditions in routine experiments.

In one embodiment, a structure for cleaning sealing surfaces of a valve core and a valve seat is provided, (as shown in fig. 2-4) comprises a mounting disc 1 arranged between the valve core b and a lower valve cover c, wherein the mounting disc 1 is arranged coaxially with the valve core b; a driving shaft 2 is arranged at the bottom of the mounting disc 1, the driving shaft 2 and the mounting disc 1 are coaxially arranged, and one end of the driving shaft 2 penetrates through the lower valve cover c; wherein, the driving shaft 2 is hermetically connected with the lower valve cover c through a sealing filler; the drive shaft 2 can drive the mounting disk 1 to move axially and rotate circumferentially, and can adjust the relative positions of the mounting disk 1, the valve element b and the valve seat a. A third connecting rod 3.3 is hinged on the mounting disc 1, the third connecting rod 3.3 swings towards the outer side of the valve core b through a torsion spring arranged between the third connecting rod 3.3 and the mounting disc 1, a cleaning part 3.4 is arranged at the end part of the third connecting rod 3.3, the cleaning part 3.4 can be arranged towards the valve core b after swinging, and the cleaning part 3.4 extends to the position corresponding to the sealing surface of the valve core and the sealing surface of the valve; the cleaning part 3.4 is a brush structure. A second connecting rod 3.2 and a first connecting rod 3.1 are arranged between the mounting disc 1 and the lower valve cover c, the end parts of the second connecting rod 3.2 and the first connecting rod 3.1 are hinged, wherein the first connecting rod 3.1 is hinged on the driving shaft 2, the second connecting rod 3.2 is hinged on the opposite end of the third connecting rod 3.3 provided with a cleaning part 3.4, and when the hinged end of the second connecting rod 3.2 and the first connecting rod 3.1 is abutted to the bottom of the lower valve cover c, the second connecting rod 3.2 can push the third connecting rod 3.3 to enable the end of the cleaning part 3.4 to swing towards the inner side of the valve core b. Therefore, as can be seen from the above, the torsion spring drives the third link 3.3 to swing towards the outside of the valve core b, and the second link 3 and the first link 3.1 are in hinged fit to make the third link 3.3 swing towards the outside of the valve core b.

When the valve seat sealing surface a1 and the valve core sealing surface b1 are cleaned, the valve core b moves upwards firstly, so that a space for placing a cleaning part 3.4 is formed by the valve seat sealing surface a1 and the valve core sealing surface b 1; the driving shaft 2 is pushed upwards, the hinged end of the second connecting rod 3.2 and the first connecting rod 3.1 is separated from the bottom of the lower valve cover c, the third connecting rod 3.3 swings towards the outer side of the valve core b through the torsion of a torsion spring, the cleaning part 3.4 extends to the position corresponding to the sealing surface of the valve core and the sealing surface of the valve, and the driving shaft 2 is continuously pushed upwards to enable the cleaning part 3.4 to enter the position between the sealing surface a1 of the valve seat and the sealing surface b1 of the valve core; finally, the drive shaft 2 is rotated to rotate the cleaning part 3.4 to clean the valve seat sealing surface a1 and the valve core sealing surface b 1. When clearance portion 3.4 withdrawed, pulling drive shaft 2 downwards, second connecting rod 3.2 can promote third connecting rod 3.3 and make 3.4 ends of clearance portion swing to case b inboard gradually after two connecting rods 3.2 and first connecting rod 3.1 hinged end and valve gap c bottom butt, realize the withdrawal of clearance portion 3.4. Therefore, the valve core and the valve seat sealing surface are cleaned under the condition that the valve is not detached, and then tiny particle impurities bonded on the valve core sealing surface and the valve seat sealing surface can be cleaned in time, so that the situation that the impurities are bonded and accumulated on the sealing surface to cause the sealing surface to be damaged is prevented, the degree of leakage in the valve is reduced, the service life of the valve is prolonged, and the production and maintenance cost is reduced.

Combine above-mentioned structural feature in order to avoid third connecting rod 3.3 and clearance portion 3.4 to occupy the valve space, it is unobstructed to do benefit to liquid flow in the valve to and avoid impurity to pile up in the valve, seted up at 1 perisporium of mounting disc and put mouthful 1.1, second connecting rod 3.2 promotes third connecting rod 3.3 and can make third connecting rod 3.3 and clearance portion 3.4 arrange in putting mouthful 1.1. When the cleaning part 3.4 rotates to clean the sealing surface, in order to avoid the cleaning part 3.4 from swinging towards the outer side of the valve core through centrifugal force, the abutting part 4 is arranged in the placing opening 1.1, and the abutting part 4 limits the swinging range of the third connecting rod 3.3 and the cleaning part 3.4 towards the outer side of the valve core b.

In order to adjust the downward movement position of the driving shaft 2 and adjust the connection end of the two connecting rods 3.2 and the first connecting rod 3.1 to be abutted against the bottom of the lower valve cover c, an annular convex pressing platform c1 is arranged at the bottom of the lower valve cover c, the convex pressing platform c1 is in threaded connection with the lower valve cover c, the height of the convex pressing platform c1 can be adjusted through threads, and then the stroke of the valve core b can be changed.

In order to improve the cleaning efficiency and quality of the cleaning part 3.4 to the sealing surface, a motor 5 is arranged at the bottom of the outer side of the lower valve cover c, and an output shaft of the motor 5 is in transmission connection with the driving shaft 2. The motor drives the cleaning part 3.4 to clean the sealing surface of the valve core and the valve seat quickly when rotating.

When the motor is used, in order to facilitate the installation of the motor, the installation part 5.1 is arranged on the motor 5, and the motor 5 is installed on the outer side of the lower valve cover c through the installation part 5.1; in order to facilitate the quick determination of whether the cleaning part 3.4 enters between the valve seat sealing surface a1 and the valve core sealing surface b1, the mounting part 5.1 is provided with a telescopic rod, and scales are marked on the telescopic rod. During installation, the length of the installation piece 5.1 is adjusted according to the scales, and the length can enable the motor to push the driving shaft 2 when being matched with the driving shaft 2, so that the cleaning part 3.4 enters between the valve seat sealing surface a1 and the valve core sealing surface b 1.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a structure for clearing up sealed face of case, valve seat which characterized in that includes:

the mounting disc 1 is arranged between the valve core b and the lower valve cover c and is coaxially arranged with the valve core b;

a drive shaft 2 coaxially mounted on the mounting plate 1 and having one end penetrating the lower bonnet c; wherein the driving shaft 2 is connected with the lower valve cover c in a sealing way; the driving shaft 2 can drive the mounting disc 1 to axially move and circumferentially rotate;

a cleaning part 3.4 is arranged at one end part of the third connecting rod 3.3; the third connecting rod 3.3 is hinged to the mounting disc 1, and drives the end of the cleaning part 3.4 to swing towards the outer side of the valve core b through a torsion spring, so that the cleaning part 3.4 is arranged towards the valve core b, and the cleaning part 3.4 extends to a position corresponding to the sealing surface of the valve core and the sealing surface of the valve;

the end parts of the second connecting rod 3.2 and the first connecting rod 3.1 are hinged and are respectively arranged between the mounting disc 1 and the lower valve cover c; the first connecting rod 3.1 is hinged on the driving shaft 2; the second connecting rod 3.2 is hinged to the third connecting rod 3.3, and when the hinged end of the second connecting rod 3.2 and the hinged end of the first connecting rod 3.1 are abutted to the bottom of the lower valve cover c, the second connecting rod 3.2 can push the third connecting rod 3.3 to enable the end of the cleaning part 3.4 to swing towards the inner side of the valve core b.

2. The structure for cleaning the sealing surface of the valve core and the valve seat as claimed in claim 1, wherein the mounting plate 1 is provided with a placing opening 1.1 on the peripheral wall, and the second connecting rod 3.2 pushes the third connecting rod 3.3 to enable the third connecting rod 3.3 and the cleaning part 3.4 to be placed in the placing opening 1.1.

3. The structure for cleaning the sealing surface of the valve core and the valve seat according to claim 2, wherein an abutting part 4 is arranged in the opening 1.1, and the abutting part 4 limits the swinging range of the third connecting rod 3.3 to the outer side of the valve core b.

4. The structure for cleaning the sealing surface of the valve core and the valve seat as claimed in claim 1, wherein the bottom of the lower valve cover c is provided with an annular convex pressing platform c1, and the convex pressing platform c1 is in threaded connection with the lower valve cover c.

5. The structure for cleaning the sealing surface of the valve core and the valve seat as claimed in claim 1, wherein the lower valve cover c is provided with a motor 5, and an output shaft of the motor 5 is in transmission connection with the driving shaft 2.

6. The structure for cleaning the sealing surface of the valve core and the valve seat as claimed in claim 5, wherein a mounting part 5.1 is provided on the motor 5, the motor 5 is mounted outside the lower valve cover c through the mounting part 5.1, wherein the mounting part 5.1 is a telescopic rod, and the telescopic rod is marked with scales.