CN215173067U

CN215173067U - Rotary seal valve

Info

Publication number: CN215173067U
Application number: CN202121392300.0U
Authority: CN
Inventors: 赵天峰; 赵雨辰
Original assignee: Qinhuangdao Fengyue Technology Co ltd
Current assignee: Qinhuangdao Fengyue Technology Co ltd
Priority date: 2021-06-22
Filing date: 2021-06-22
Publication date: 2021-12-14
Anticipated expiration: 2031-06-22

Abstract

The application discloses rotary seal valve, rotary seal valve include valve body, dabber, valve shaft connector, bearing and sealing member, are provided with the boss on the valve body, and the boss is used for being connected with the valve shaft connector, is provided with the shaft shoulder on the dabber, and the shaft shoulder is used for installing the bearing, and the bearing cooperates with the spacing arch of the inside bearing of valve body, dabber top and sealing member cooperation. The utility model discloses rotary seal valve adopts the bearing to undertake the moment of flexure of dabber, avoids the dabber to take place deformation, also makes the sealing member only bear axial thrust, has strengthened sealed reliability.

Description

Rotary seal valve

Technical Field

The application belongs to the field of sealing valves and relates to a rotary sealing valve.

Background

In the process of casting and producing aluminum alloy, the purification of the discharged gas is an essential link. Degassing and cleaning are usually performed by a degasser. The inert gas delivery routes are: air supply → pipeline → rotary seal valve → hollow shaft of deaerator.

The rotary sealing valve is a key device of a gas transmission system, and the existing rotary sealing valve is a simple elbow type and uses a common O-shaped ring to seal inert gas between a rotating shaft and a static shaft. The prior art has a number of disadvantages, such as: the sealing effect is poor, complete sealing cannot be realized, and inert gas always escapes from the space between the rotating shaft and the static shaft; the service cycle is short, and the average service life is 180-200 hours; the O-shaped ring can not work continuously, and the O-shaped ring can be damaged due to overheating after the O-shaped ring works continuously for more than four hours; the aluminum alloy is frequently damaged in the degassing process, so that the quality of the aluminum alloy product is influenced; it cannot be applied to high-speed workplaces.

Therefore, how to provide a rotary sealing valve which has good sealing performance and long service life and can adapt to a high-rotating-speed scene is a technical problem which needs to be solved urgently at present.

Disclosure of Invention

In order to solve the above technical problem, the present application provides a rotary seal valve:

the rotary sealing valve comprises a valve body, a mandrel, a valve shaft connector, a bearing and a sealing element, wherein a boss is arranged on the valve body and used for being connected with the valve shaft connector, a shaft shoulder is arranged on the mandrel and used for installing the bearing, the bearing is matched with a bearing limiting bulge in the valve body, and the top end of the mandrel is matched with the sealing element.

The bearing is arranged on the mandrel to bear bending moment, so that the mandrel is prevented from being deformed, the sealing element is only subjected to axial thrust, gas leakage is avoided, and the sealing performance of the sealing valve is ensured. The valve body and the valve shaft connector are in split design, so that the valve body and the valve shaft connector are convenient to replace, and the universality of the rotary sealing valve is enhanced.

Optionally, the boss is provided with an external thread, the valve shaft connector is provided with an internal thread matched with the external thread, and the boss is in threaded connection with the valve shaft connector.

The boss is connected with the valve shaft connector through threads, so that the installation and the disassembly are convenient.

Optionally, a limiting groove is formed in the valve body, a check ring is installed in the limiting groove, and the check ring is used for fixing the bearing.

The limiting groove is arranged inside the valve body and matched with the check ring to block the outer ring of the bearing, so that the bearing is prevented from moving on the mandrel, and the integral installation precision is ensured.

Optionally, the mandrel is provided with two bearing mounting positions, and the bearing mounting positions are distributed on two sides of the shaft shoulder.

The mandrel is provided with two bearing mounting positions, and the two bearings are symmetrically distributed along the shaft shoulder, so that the bending resistance of the whole mandrel can be enhanced, and the strength of the whole rotary sealing valve is improved.

Optionally, a chamfer is arranged at the top end of the mandrel and is 30-45 degrees.

Through set up the chamfer at the dabber top, sealing member and chamfer cooperation guarantee that the sealing member can not drop from the dabber.

Optionally, the sealing member is made of polyvinyl chloride.

The polyvinyl chloride is high-pressure resistant, and the sealing reliability of the whole rotary sealing valve can be improved.

Optionally, the bearing type is a deep groove ball bearing or a cylindrical roller bearing.

The bearing type is a deep groove ball bearing or a cylindrical roller bearing, and the bearing type is flexibly switched according to different practical application scenes.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a schematic view of an embodiment of a rotary seal valve according to the present invention;

FIG. 2 is a schematic structural view of the valve body in FIG. 1

FIG. 3 is a schematic structural view of the mandrel of FIG. 1;

FIG. 4 is a schematic view of the valve shaft connector shown in FIG. 1;

in the figure: a valve body 1; a limiting groove 11; a boss 12; external threads 121; a mandrel 2; a bearing mounting location 21; a shoulder 22; chamfering 23; a valve shaft connector 3; an internal thread 31; a bearing 4; a seal 5; a retainer ring 6.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.

The rotary seal valve of the present invention is specifically described below with reference to the accompanying drawings:

as shown in fig. 1, the rotary seal valve includes a valve body 1, a spindle 2, a valve shaft connector 3, a bearing 4 and a sealing element 5, wherein a boss 12 is provided on the valve body 1, the boss 12 is used for connecting with the valve shaft connector 3, a shoulder 22 is provided on the spindle 2, the shoulder 22 is used for mounting the bearing 4, the bearing 4 is matched with a bearing limit protrusion inside the valve body 1, and the top end of the spindle 2 is matched with the sealing element 5.

The bearing 4 is arranged on the mandrel 2 to bear bending moment, so that the mandrel 2 is prevented from deforming, the sealing element 5 is only subjected to axial thrust, gas leakage is avoided, and the sealing performance of the sealing valve is ensured. The valve body 1 and the valve shaft connector 3 are in a split design, so that the replacement is convenient, and the universality of the rotary sealing valve is enhanced.

Optionally, as shown in fig. 2, an external thread 121 is provided on the boss 12, an internal thread 31 matching with the external thread 121 is provided on the valve shaft connector 3, and the boss 12 and the valve shaft connector 3 are in threaded connection.

The boss 12 is connected with the valve shaft connector 3 through threads, so that the installation and the disassembly are convenient.

Optionally, as shown in fig. 2, a limiting groove 11 is arranged inside the valve body 1, a retainer ring 6 is installed in the limiting groove 11, and the retainer ring 6 is used for fixing the bearing 4.

Limiting groove 11 sets up inside valve body 1, and with retaining ring 6 cooperation, block bearing 4 outer lane, prevent that bearing 4 from shifting on dabber 2, guarantee holistic installation accuracy.

Optionally, as shown in fig. 3, two bearing 4 mounting positions 21 are provided on the mandrel 2, and the bearing 4 mounting positions 21 are distributed on two sides of the shoulder 22.

The mandrel 2 is provided with two bearing 4 mounting positions 21, and the two bearings 4 are symmetrically distributed along the shaft shoulder 22, so that the bending resistance of the whole mandrel 2 can be enhanced, and the strength of the whole rotary sealing valve can be improved.

Optionally, as shown in fig. 3, a chamfer 23 is provided at the top end of the mandrel 2, and the chamfer 23 is 30-45 degrees.

Through set up chamfer 23 at dabber 2 top, sealing member 5 and chamfer 23 cooperation guarantee that sealing member 5 can not drop from dabber 2.

Optionally, the material of the sealing member 5 is polyvinyl chloride.

Alternatively, the bearing 4 is of the type of a deep groove ball bearing or a cylindrical roller bearing.

The type of the bearing 4 is a deep groove ball bearing or a cylindrical roller bearing, and the bearing is flexibly switched according to different practical application scenes. Cylindrical roller bearings may be chosen if the spindle is subjected to large bending moments in use, and deep groove ball bearings may be chosen if the forces to which the spindle is subjected are complex in use.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims

1. The utility model provides a rotary seal valve, its characterized in that, rotary seal valve includes valve body, dabber, valve shaft connector, bearing and sealing member, be provided with the boss on the valve body, the boss be used for with the valve shaft connector is connected, be provided with the shaft shoulder on the dabber, the shaft shoulder is used for the installation the bearing, the bearing with the spacing protruding cooperation of the inside bearing of valve body, the dabber top with the sealing member cooperation.

2. The rotary sealing valve according to claim 1, wherein said boss is provided with an external thread, said valve shaft connector is provided with an internal thread matching said external thread, and said boss and said valve shaft connector are threadedly connected.

3. The rotary sealing valve according to claim 1, characterized in that said valve body is internally provided with a limiting groove, in which a retaining ring is mounted, said retaining ring being intended to fix said bearing.

4. The rotary sealing valve according to claim 1, wherein said spindle is provided with two bearing mounting locations, said bearing mounting locations being distributed on both sides of said shoulder.

5. The rotary sealing valve according to claim 1, wherein said mandrel tip is provided with a chamfer, said chamfer being in the range of 30-45 degrees.

6. The rotary sealing valve according to claim 1, wherein said seal is made of polyvinyl chloride.

7. The rotary sealing valve according to claim 1, characterized in that said bearing type is a deep groove ball bearing or a cylindrical roller bearing.