CN218094290U

CN218094290U - Sealing device of pneumatic butterfly valve

Info

Publication number: CN218094290U
Application number: CN202221985400.9U
Authority: CN
Inventors: 陈平; 高勇; 张敏超
Original assignee: Hubei Shangweijia Intelligent Technology Co ltd
Current assignee: Hubei Shangweijia Intelligent Technology Co ltd
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2022-12-20
Anticipated expiration: 2032-07-29

Abstract

The utility model relates to a pneumatic butterfly valve seals technical field, and discloses a pneumatic butterfly valve's sealing device, rotate the valve rod of being connected including the valve body and with the valve body, still include fixed mounting in the left valve plate of valve rod, the diapire fixed mounting of valve body has the installation pole that extends to the valve rod inside, rotate through the bearing between the surface of installation pole and the inner wall of valve rod and be connected, the top fixed mounting of installation pole has the double flute cam, the inner wall swing joint of double flute cam has the pull rod that is upper and lower symmetric distribution, and the pull rod is L shape. This pneumatic butterfly valve's sealing device possesses the contact wear who reduces the sealing member, guarantees advantages such as the leakproofness of valve, has solved current butterfly valve sealing device generally through inlay establish the sealing washer in closure member surface or valve pipe internal surface, but in frequent switch closure in-process, wearing and tearing can appear very fast in the sealing washer, and then lead to the sealing failure of butterfly valve, influence the problem of the normal work of equipment.

Description

Sealing device of pneumatic butterfly valve

Technical Field

The utility model relates to a pneumatic butterfly valve seals technical field, specifically is a sealing device of pneumatic butterfly valve.

Background

The pneumatic butterfly valve is composed of a pneumatic actuator and a butterfly valve, wherein the pneumatic butterfly valve is a pneumatic valve which is opened and closed by a circular butterfly plate rotating along with a valve rod so as to realize starting action, and the butterfly valve is opened and closed by components such as a valve shaft, a closing member, a valve pipe, a sealing member and the like.

The sealing ring is generally embedded in the surface of a closing part or the inner surface of a valve pipe in the conventional butterfly valve sealing device, but the sealing ring is quickly worn in the frequent opening and closing process, so that the sealing failure of the butterfly valve is caused, and the normal work of equipment is influenced, so that the sealing device of the pneumatic butterfly valve is provided to solve the problem.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a sealing device of pneumatic butterfly valve possesses the contact wear who reduces the sealing member, guarantees advantages such as the leakproofness of valve, has solved current butterfly valve sealing device generally through inlaying and establish the sealing washer in closing member surface or valve pipe internal surface, but at frequent switch closure in-process, wearing and tearing can appear very fast in the sealing washer, and then lead to the sealed inefficacy of butterfly valve, influence the problem of the normal work of equipment.

(II) technical scheme

The utility model provides an above-mentioned technical problem's technical scheme as follows: the utility model provides a sealing device of pneumatic butterfly valve, includes the valve body and rotates the valve rod of being connected with the valve body, still includes fixed mounting in the left valve plate of valve rod, the diapire fixed mounting of valve body has the installation pole that extends to the inside of valve rod, rotate through the bearing between the surface of installation pole and the inner wall of valve rod and be connected, the top fixed mounting of installation pole has the double flute cam, the inner wall swing joint of double flute cam has the pull rod that is longitudinal symmetry distribution, and the pull rod is L shape, the inner chamber of valve plate and the inner chamber intercommunication of valve rod, from top to bottom the left side of pull rod all extends to the inside of valve plate, from top to bottom the same movable sealing ring of left side fixedly connected with of pull rod, the inner wall fixed mounting of valve plate has fixed sealing ring.

The utility model has the advantages that:

this sealing device of pneumatic butterfly valve, when the device during operation, the valve rod drives the valve plate and rotates, under the cooperation of double flute cam and pull rod, make two pull rods move to the one side of carrying on the back mutually, and then drive the direction motion that the movable seal hoop is close to the valve body inner wall, make between movable seal ring and the fixed seal ring, form the extrusion between the inner wall of movable seal ring and valve body, make the inside formation of the device sealed, when the device during operation once more, double flute cam and pull rod cooperation, two pull rods drive the relative side motion of movable seal hoop promptly, make the valve plate when rotating movable seal ring not produce the friction with the inner wall of valve body, possessing the contact wear who reduces the sealing member, guarantee the advantage of the leakproofness of valve.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

Further, the outer surface of the double-groove cam is provided with limiting sliding grooves which are symmetrically distributed up and down, the right side of the pull rod is movably provided with rollers, and the rollers extend to the insides of the limiting sliding grooves.

Adopt above-mentioned further scheme's beneficial effect to be, through gyro wheel and spacing spout inner wall relative motion, improve relative motion's smoothness nature between pull rod and the double flute cam.

Further, the same rotary sealing ring is fixedly mounted between the outer surface of the mounting rod and the inner wall of the valve rod, and the same rotary sealing ring is fixedly mounted between the outer surface of the valve rod and the inner wall of the valve body.

Adopt above-mentioned further scheme's beneficial effect is, prevent the device through setting up rotatory sealing washer and cause the leakage of liquid in the course of the work, guarantee the normal work of equipment.

Furthermore, the relative one side of fixed sealing ring and activity sealing ring all is the tilting design, and the relative one side of fixed sealing ring and activity sealing ring closely laminates, the activity sealing ring adopts elastic rubber.

The beneficial effect who adopts above-mentioned further scheme is that, the tilting design possesses the wedging effect between being convenient for movable sealing ring and the fixed sealing ring for form the extrusion between movable sealing ring and the fixed sealing ring, ensure sealed reliability.

Further, from top to bottom the equal fixed mounting in front and the back of pull rod has the stopper that is vertical evenly distributed, the inner wall of valve plate set up with the T shape spout of stopper looks adaptation, and the equal polishing of the inner wall of the surface of stopper and T shape spout handles.

The beneficial effect who adopts above-mentioned further scheme is that, the stopper can lead spacing to the motion of pull rod, and the polishing is handled and is convenient for produce relative motion between stopper and the T spout.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of the point A of the present invention;

FIG. 3 is an enlarged view of the position B of the present invention;

FIG. 4 is a drawing showing the connection between the pull rod and the valve plate;

fig. 5 is a development view of the outer surface of the double-groove cam of the present invention.

In the figure: 1. a valve body; 2. a valve stem; 3. a valve plate; 4. mounting a rod; 5. a double-grooved cam; 6. a pull rod; 7. a movable sealing ring; 8. fixing a sealing ring; 9. a limiting chute; 10. a roller; 11. rotating the sealing ring; 12. and a limiting block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the embodiment, given by fig. 1-5, a sealing device of pneumatic butterfly valve, including valve body 1 and with valve body 1 rotate the valve rod 2 of being connected, still include fixed mounting in the left valve plate 3 of valve rod 2, the diapire fixed mounting of valve body 1 has the installation pole 4 that extends to the inside of valve rod 2, rotate through the bearing between the surface of installation pole 4 and the inner wall of valve rod 2 and be connected, the top fixed mounting of installation pole 4 has double flute cam 5, the inner wall swing joint of double flute cam 5 has the pull rod 6 that is upper and lower symmetric distribution, and pull rod 6 is the L shape, the inner chamber of valve plate 3 and the inner chamber intercommunication of valve rod 2, the left side of upper and lower pull rod 6 all extends to the inside of valve plate 3, the left side fixed connection of upper and lower pull rod 6 has same movable sealing ring 7, the inner wall fixed mounting of valve plate 3 has fixed sealing ring 8.

Wherein, the outer surface of double flute cam 5 is seted up and is spacing spout 9 that upper and lower symmetric distribution, and the equal movable mounting in right side of upper and lower pull rod 6 has gyro wheel 10, and inside gyro wheel 10 extended to spacing spout 9.

The fluency of the relative motion between the pull rod 6 and the double-groove cam 5 is improved through the relative motion between the roller 10 and the inner wall of the limit sliding groove 9.

Wherein, the same rotary sealing ring 11 is fixedly arranged between the outer surface of the mounting rod 4 and the inner wall of the valve rod 2, and the same rotary sealing ring 11 is fixedly arranged between the outer surface of the valve rod 2 and the inner wall of the valve body 1.

The rotary sealing ring 11 is arranged to prevent the device from causing liquid leakage in the working process, and the normal work of the equipment is ensured.

Wherein, the relative one side of fixed seal ring 8 and activity sealing ring 7 all is the tilting design, and the relative one side of fixed seal ring 8 and activity sealing ring 7 closely laminates, and activity sealing ring 7 adopts elastic rubber.

The inclined design is convenient for the movable sealing ring 7 and the fixed sealing ring 8 to have a wedging effect, so that the movable sealing ring 7 and the fixed sealing ring 8 are extruded to ensure the sealing reliability.

Wherein, the equal fixed mounting in front and the back of upper and lower pull rod 6 has stopper 12 that is vertical evenly distributed, and the T shape spout with stopper 12 looks adaptation is seted up to the inner wall of valve plate 3, and the equal polishing treatment of the outer surface of stopper 12 and the inner wall of T shape spout.

The limiting block 12 can guide and limit the movement of the pull rod 6, and the polishing treatment is convenient for the limiting block 12 and the T-shaped sliding groove to move relatively.

The working principle is as follows:

this sealing device of pneumatic butterfly valve, when the device during operation, valve rod 2 drives valve plate 3 and rotates, under the cooperation of double flute cam 5 and pull rod 6, through gyro wheel 10 and spacing spout 9 inner wall relative motion, improve the smoothness nature of relative motion between pull rod 6 and the double flute cam 5, make two pull rod 6 move to one side of carrying on the back mutually, and then drive movable sealing ring 7 and move to the direction that is close to valve body 1 inner wall, make between movable sealing ring 7 and the fixed sealing ring 8, form the extrusion between the inner wall of movable sealing ring 7 and valve body 1, the tilting design is convenient for possess the wedging effect between movable sealing ring 7 and the fixed sealing ring 8, make form the extrusion between movable sealing ring 7 and the fixed sealing ring 8, make the inside formation of the device sealed, when the device is worked once more, double flute cam 5 and pull rod 6 cooperation, two pull rod 6 drive movable sealing ring 7 to relative one side motion promptly, make valve plate 3 movable sealing ring 7 not produce the friction with the inner wall of valve body 1 when rotating.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a sealing device of pneumatic butterfly valve, includes valve body (1) and rotates valve rod (2) of being connected, its characterized in that with valve body (1): still include fixed mounting in left valve plate (3) of valve rod (2), the diapire fixed mounting of valve body (1) has installation pole (4) that extend to valve rod (2) inside, rotate through the bearing between the surface of installation pole (4) and the inner wall of valve rod (2) and be connected, the top fixed mounting of installation pole (4) has double flute cam (5), the inner wall swing joint of double flute cam (5) has pull rod (6) that are the longitudinal symmetry and distribute, and pull rod (6) are L shape, the inner chamber of valve plate (3) and the inner chamber intercommunication of valve rod (2), from top to bottom the left side of pull rod (6) all extends to the inside of valve plate (3), from top to bottom the same movable sealing ring (7) of left side fixedly connected with of pull rod (6), the inner wall fixed mounting of valve plate (3) has fixed sealing ring (8).

2. A seal for a pneumatic butterfly valve according to claim 1, characterised in that: the outer surface of the double-groove cam (5) is provided with limiting sliding grooves (9) which are symmetrically distributed up and down, rollers (10) are movably mounted on the right side of the pull rod (6) from top to bottom, and the rollers (10) extend to the insides of the limiting sliding grooves (9).

3. The sealing device of a pneumatic butterfly valve according to claim 1, wherein: the valve is characterized in that the same rotary sealing ring (11) is fixedly mounted between the outer surface of the mounting rod (4) and the inner wall of the valve rod (2), and the same rotary sealing ring (11) is fixedly mounted between the outer surface of the valve rod (2) and the inner wall of the valve body (1).

4. A seal for a pneumatic butterfly valve according to claim 1, characterised in that: the fixed sealing ring (8) and the opposite side of the movable sealing ring (7) are both designed in an inclined mode, the fixed sealing ring (8) and the opposite side of the movable sealing ring (7) are tightly attached, and the movable sealing ring (7) is made of elastic rubber.

5. A seal for a pneumatic butterfly valve according to claim 2, characterised in that: the inner wall of the upper limiting chute (9) and the outer surface of the roller (10) are in contact, and the contact surfaces are polished.

6. A seal for a pneumatic butterfly valve according to claim 1, characterised in that: from top to bottom the front of pull rod (6) and the equal fixed mounting in the back have stopper (12) that are vertical evenly distributed, the T shape spout with stopper (12) looks adaptation is seted up to the inner wall of valve plate (3), and the equal polishing treatment of the surface of stopper (12) and the inner wall of T shape spout.