CN220688058U - Shaft seal structure of butterfly valve and butterfly valve - Google Patents

Abstract

The utility model relates to the technical field of butterfly valves and discloses a shaft seal structure of a butterfly valve and the butterfly valve, which comprise a butterfly valve body, wherein an inner shaft seal connecting plate is fixedly connected to the middle part of the inner side of the butterfly valve body, a valve is movably sleeved on the inner side of the inner shaft seal connecting plate, a connecting column is fixedly connected to the middle part of the valve, an installation seat is fixedly connected to the upper end and the lower end of the inner side of the butterfly valve body, a first sealing plate is installed in the installation seat at the lower end, and a first waterproof pad is arranged at the lower end of the first sealing plate. This bearing seal structure and butterfly valve of butterfly valve is located the outside of interior bearing seal connecting plate through the third waterproof pad, and when the valve was closed, can drive the activity of third waterproof pad, and the joint of third waterproof pad is in the inboard of valve simultaneously, and the leakproofness of interior bearing seal connecting plate and valve laminating department is increased to the third waterproof pad promptly to after the valve is closed, the second waterproof pad keeps being the laminating state with the inboard of axle shrouding, further drives the leakproofness when valve is closed, reduces the problem of liquid leakage.

Description

Shaft seal structure of butterfly valve and butterfly valve

Technical Field

The utility model relates to the technical field of butterfly valves, in particular to a shaft seal structure of a butterfly valve and the butterfly valve.

Background

The butterfly valve is also called as a flap valve, and is a valve which has a simple structure and can be used for opening and closing low-pressure pipeline media. When the butterfly valve is used, a shaft seal device is arranged in the valve, the shaft seal effectively packages the tightness of the valve, and is a friction seal or a stuffing box for preventing liquid between a shaft and a bearing of a compressor or other fluid conveying equipment from leaking and is a sealing device for preventing a pump shaft and a shell from leaking. Common shaft seal types are packing seals, mechanical seals and dynamic seals.

Among the patents issued, in chinese patent No. CN202021720696.2, a butterfly valve is disclosed that is easy to operate; through installing sealing block, spring, logical groove and sealing pad for when the in-process that needs closed valve body, rotate the dish board, make dish board and sealing pad combine, and drive its inside removal at the mounting groove, simultaneously through the effect of spring, when making the valve body close, dish board and sealing pad closely laminate, thereby strengthen the leakproofness when dish board is closed, improve sealed effect

In the above-mentioned device, in the bearing seal structure of butterfly valve, when utilizing the spring to assist to drive dish board and sealed the direct laminating of filling up, keep the compactness to the leakproofness when increasing the butterfly valve and using, but in the above-mentioned device, spring equipment is in the inside of valve, and the spring needs to be with the inside liquid contact of pipeline, can produce pressure when the liquid is filled in the pipeline inside simultaneously, can strike paralysis when the inside water pressure of pipeline is too big, thereby influence the elastic kinetic energy of spring, thereby when utilizing elasticity to carry the laminating between dish board and the sealed pad, because the problem of water pressure can influence laminating efficiency, we have proposed a bearing seal structure of butterfly valve and butterfly valve for this reason.

Disclosure of Invention

Aiming at the defects of the existing shaft seal structure and butterfly valve of the butterfly valve, the utility model provides the shaft seal structure and butterfly valve of the butterfly valve, which are provided with the waterproof pad arranged on the outer side of the inner shaft seal connecting plate, wherein the waterproof pad can move to the outer part of the valve when the valve is closed, so that the sealing performance can be improved, and the second waterproof pad is attached to the outer part of the shaft seal plate when the valve is attached to the inner shaft seal connecting plate, namely, the shaft seal plate and the second waterproof pad are kept sealing performance, so that the problems in the background art are solved.

The utility model provides the following technical scheme: the utility model provides a shaft seal structure and butterfly valve of butterfly valve, includes the butterfly valve body, the inboard middle part fixedly connected with of butterfly valve body is interior seal connecting plate, interior movable sleeve of interior seal connecting plate has cup jointed the valve, the middle part fixedly connected with spliced pole of valve, the inside upper and lower end fixedly connected with mount pad of butterfly valve body, the lower extreme the internally mounted of mount pad has first closing plate, the lower extreme is provided with first waterproof pad, the lower extreme threaded connection of mount pad has the seal cover, the upper end the inside of mount pad is provided with the second closing plate, the upper end the inside threaded connection of mount pad has the thread bush, the outside of second closing plate is provided with the rotation handle, interior fixedly connected with third waterproof pad of interior seal connecting plate, interior movable sleeve of interior seal connecting plate has the shaft seal board, the internally mounted of shaft seal board has first fastening bolt, the outside fixedly connected with strengthening rib of valve, the outside of valve is located the second waterproof pad of the inboard of axle closing plate simultaneously.

Preferably, the connecting column is arranged in the upper and lower groups of mounting seats, the valve and the inner shaft seal connecting plate are round, and the valve is attached to the inner shaft seal connecting plate.

Preferably, the third waterproof pad is arc-shaped, and the inner side of the third waterproof pad is filled with gas, and the third waterproof pad is movably sleeved in the valve.

Preferably, the front end of the first sealing plate passes through the inside of the connecting column, and the bolt is arranged at the outside of the connecting column, and the first waterproof gasket is clamped between the sealing sleeve and the first sealing plate.

Preferably, the middle part centre gripping of second closing plate is in the outside of spliced pole upper end, the middle part of second closing plate extends to the inside of spliced pole, the outside of second closing plate pass the spliced pole and cup joint with mutual activity between the rotation handle simultaneously.

Preferably, the lower end of the rotating handle is in contact with the upper portion of the screw sleeve, and the upper end of the second sealing plate passes through the inside of the screw sleeve.

Preferably, the shaft seal plate is installed at both ends of the inner shaft seal connecting plate, meanwhile, a baffle is installed at one side of the inner part of the shaft seal plate, the baffle is located at the outer part of the valve, and the second waterproof pad is attached to the inner side of the shaft seal plate.

Compared with the shaft seal structure of the existing butterfly valve and the butterfly valve, the butterfly valve has the following beneficial effects:

1. the shaft seal structure and the butterfly valve of the butterfly valve are installed at two ends of the inner shaft seal connecting plate through the shaft seal plate, and the shaft seal plate can limit a closing interval when driving the valve to be closed, so that the valve is prevented from continuously rotating when the water pressure is overlarge, and equipment is damaged.

2. This bearing seal structure and butterfly valve of butterfly valve is located the outside of interior bearing seal connecting plate through the third waterproof pad, and when the valve was closed, can drive the activity of third waterproof pad, and the joint of third waterproof pad is in the inboard of valve simultaneously, and the leakproofness of interior bearing seal connecting plate and valve laminating department is increased to the third waterproof pad promptly to after the valve is closed, the second waterproof pad keeps being the laminating state with the inboard of axle shrouding, further drives the leakproofness when valve is closed, reduces the problem of liquid leakage.

Drawings

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 cross-sectional view of the main body of the present utility model;

FIG. 4 is a schematic top view of the main body of the present utility model;

fig. 5 is a schematic diagram of the explosive structure of the main body of the present utility model.

In the figure: 1. a butterfly valve body; 2. an inner shaft seal connecting plate; 3. a valve; 4. a connecting column; 5. a mounting base; 6. a first sealing plate; 7. a first waterproof pad; 8. sealing sleeve; 9. a second sealing plate; 10. a thread sleeve; 11. rotating the handle; 12. a third waterproof pad; 13. a shaft sealing plate; 14. a first fastening bolt; 15. reinforcing ribs; 16. and a second waterproof pad.

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, 2, 3, 4 and 5, a shaft seal structure of a butterfly valve and the butterfly valve thereof, comprising a butterfly valve body 1, wherein an inner shaft seal connecting plate 2 is fixedly connected to the middle part of the inner side of the butterfly valve body 1, the inner shaft seal connecting plate 2 drives a shaft seal plate 13 to limit the position, a valve 3 is movably sleeved on the inner side of the inner shaft seal connecting plate 2, when the valve 3 rotates, an opening can be formed, the valve can be controlled to be closed or opened by portable equipment, a connecting column 4 is fixedly connected to the middle part of the valve 3, an installation seat 5 is fixedly connected to the upper end and the lower end of the inner side of the butterfly valve body 1, the connecting column 4 and the installation seat 5 are mutually sleeved and limited, namely, the installation seat 5 drives the position of the connecting column 4 to limit the position, a first sealing plate 6 is arranged in the lower end of the installation seat 5, the position between the lower end connecting column 4 and the installation seat 5 is limited, a first waterproof pad 7 is arranged at the lower end of the first sealing plate 6, the lower end of the lower end mounting seat 5 is connected with a sealing sleeve 8 in a threaded manner, the first waterproof pad 7 and the sealing sleeve 8 increase tightness when driving equipment to be mounted, the second sealing plate 9 is arranged in the upper end mounting seat 5, the second sealing plate 9 drives the upper end of the mounting seat 5 to be limited with the connecting column 4, the inner thread of the upper end mounting seat 5 is connected with a threaded sleeve 10, the outer side of the second sealing plate 9 is provided with a rotating handle 11, the rotating handle 11 controls the valve 3 to rotate, the inner side of the inner shaft sealing connecting plate 2 is fixedly connected with a third waterproof pad 12, the third waterproof pad 12 is movable, meanwhile, the third waterproof pad 12 can be clamped in the inner side of the valve 3, namely, the tightness when the equipment is increased, the outer side of the inner shaft sealing connecting plate 2 is movably sleeved with a shaft sealing plate 13, the inner side of the shaft sealing plate 13 is provided with a first fastening bolt 14, the outside fixedly connected with strengthening rib 15 of valve 3, the outside of valve 3 is located the inboard of shaft seal 13 simultaneously and installs second waterproof pad 16, and when valve 3 was closed, second waterproof pad 16 laminating was in the outside of bearing seal plate 13, and when laminating the restriction between bearing seal plate 13 and the second waterproof pad 16, the multiplicable leakproofness reduced liquid leakage.

Referring to fig. 1, the connecting column 4 is installed in the upper and lower two sets of installation seats 5, meanwhile, the valve 3 and the inner shaft seal connecting plate 2 are circular, the valve 3 is attached to the inner shaft seal connecting plate 2, stability is increased when the installation seat 5 drives the connecting column 4 to be installed at the position by installing the connecting column 4 on the inner side of the installation seat 5, and meanwhile, the positions between the valve 3 and the inner shaft seal connecting plate 2 are mutually sleeved and limited, namely, when the valve 3 moves to be attached to the inner shaft seal connecting plate 2, the inner part of the butterfly valve can be driven to keep a sealing state.

Referring to fig. 4, the third waterproof pad 12 is arc-shaped, the inner side of the third waterproof pad 12 is filled with gas, the third waterproof pad 12 is movably sleeved in the valve 3, the third waterproof pad 12 is installed through the inner side of the inner sealing connecting plate 2, when the valve 3 rotates, the outer side of the valve 3 contacts with the third waterproof pad 12, the third waterproof pad 12 contracts inwards, when the valve 3 moves to the inner sealing connecting plate 2 to be parallel, the third waterproof pad 12 moves to the inner side of the valve 3, namely, the third waterproof pad 12 can drive the inner sealing connecting plate 2 to be overlapped with the valve 3, and the sealing performance is improved.

Referring to fig. 3, the front end of the first sealing plate 6 passes through the inside of the connecting column 4, meanwhile, the bolt is installed on the outside of the connecting column 4, the first waterproof pad 7 is clamped between the sealing sleeve 8 and the first sealing plate 6, the first sealing plate 6 is installed in the installation seat 5 through the connecting column 4, meanwhile, the first sealing plate 6 is installed in the installation seat 5 at the lower end, the position between the connecting column 4 and the installation seat 5 is limited, and the first waterproof pad 7 and the sealing sleeve 8 are sequentially installed at the lower end of the first sealing plate 6, so that the sealing performance and the waterproof performance are improved when equipment installation can be driven, and meanwhile, the problem of looseness in the installation of the position of the first sealing plate 6 is avoided.

Referring to fig. 3, the middle part of the second sealing plate 9 is clamped at the outer part of the upper end of the connecting column 4, the middle part of the second sealing plate 9 extends to the inner part of the connecting column 4, the outer part of the second sealing plate 9 passes through the connecting column 4 and is movably sleeved with the rotating handle 11, after the second sealing plate 9 is carried and installed in the inner part of the upper end installation seat 5, the second sealing plate 9 drives the connecting column 4 and the upper end of the installation seat 5 to limit, meanwhile, bolts are installed between the second sealing plate 9 and the connecting column 4 to limit, the rotating handle 11 is installed at the outer part of the second sealing plate 9, the rotating handle 11 can drive the connecting column 4 to regulate and control the angle inside the butterfly valve body 1.

Referring to fig. 3, the lower end of the rotating handle 11 contacts with the upper portion of the threaded sleeve 10, and the upper end of the second sealing plate 9 passes through the interior of the threaded sleeve 10, and is installed in the installation seat 5 through the threaded sleeve 10, the lower end of the threaded sleeve 10 extrudes and limits the position of the second sealing plate 9, i.e. when the second sealing plate 9 is installed in position, stability is increased, the rotating handle 11 is sleeved outside the top end of the second sealing plate 9, and meanwhile, the rotating handle 11 limits the position of the threaded sleeve 10, so that the loosening problem is avoided when the threaded sleeve 10 is installed and used.

Referring to fig. 2, the shaft sealing plates 13 are installed at both ends of the inner shaft sealing connection plate 2, meanwhile, a baffle is installed at one side of the inner shaft sealing plate 13, the baffle is located at the outer side of the valve 3, the second waterproof pad 16 is attached to the inner side of the shaft sealing plate 13, the shaft sealing plates 13 are installed at the outer side of the inner shaft sealing connection plate 2, the rotation track of the valve 3 is limited by the shaft sealing plates 13 in sequence, namely, the rotation treatment of the valve 3 is avoided, the second waterproof pad 16 is arranged at the outer side of the valve 3, the second waterproof pad 16 is attached to the inner side of the shaft sealing plate 13, namely, when the valve 3 is aligned with the inner shaft sealing connection plate 2, attaching limitation is carried out between the shaft sealing plate 13 and the second waterproof pad 16, so that when the valve is closed, the sealing performance can be increased.

Working principle: when the sealing device is used, the valve 3 is moved to the inner side of the inner shaft seal connecting plate 2, the connecting column 4 and the mounting seat 5 are aligned and mounted, meanwhile, the second sealing plate 9 and the first sealing plate 6 are sequentially mounted at the upper end and the lower end of the mounting seat 5, meanwhile, when the waterproof pad 7, the sealing sleeve 8, the threaded sleeve 10 and the rotating handle 11 are sequentially mounted outside the first sealing plate 6 and the second sealing plate 9, namely, when the connecting column 4 is mounted, stability and sealing performance can be improved, the shaft sealing plate 13 is mounted at the front end and the rear end of the inner shaft seal connecting plate 2, the shaft sealing plate 13 is limited through the first fastening bolt 14, when the sealing device is used, the rotating handle 11 rotates, the rotating handle 11 drives the valve 3 to rotate, namely, an opening is formed in the butterfly valve body 1, liquid is driven to circulate, meanwhile, the shaft sealing plate 13 drives the movable maximum track of the valve 3 to be limited, and when the valve 3 and the inner shaft sealing connecting plate 2 are carried, the third waterproof pad 12 contracts inwards and simultaneously moves to the inner side of the valve 3, namely, sealing performance can be improved when the inner shaft sealing connecting plate 2 and the valve 3 are closed, and the sealing performance can be improved when the sealing device is used.

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

Claims (7)

1. The utility model provides a bearing seal structure and butterfly valve of butterfly valve, includes butterfly valve body (1), the inboard middle part fixedly connected with of butterfly valve body (1) is interior seal connecting plate (2), interior movable sleeve of interior seal connecting plate (2) has valve (3), the middle part fixedly connected with spliced pole (4) of valve (3), the inside upper and lower fixedly connected with mount pad (5) of butterfly valve body (1), the lower extreme mounting of mount pad (5) has first closing plate (6), the lower extreme of first closing plate (6) is provided with first waterproof pad (7), the lower extreme threaded connection of mount pad (5) has seal cover (8), the upper end the inside of mount pad (5) is provided with second closing plate (9), the upper end the inside threaded connection of mount pad (5) has thread bush (10), the outside of second closing plate (9) is provided with rotation handle (11), its characterized in that: the novel waterproof sealing device is characterized in that a third waterproof pad (12) is fixedly connected to the inner side of the inner shaft seal connecting plate (2), a shaft seal plate (13) is movably sleeved on the outer side of the inner shaft seal connecting plate (2), a first fastening bolt (14) is mounted in the shaft seal plate (13), a reinforcing rib (15) is fixedly connected to the outer side of the valve (3), and a second waterproof pad (16) is mounted on the inner side of the shaft seal plate (13) at the same time.

2. The shaft seal structure of a butterfly valve according to claim 1, wherein: the connecting column (4) is arranged in the upper and lower groups of mounting seats (5), meanwhile, the valve (3) and the inner shaft seal connecting plate (2) are round, and the valve (3) is attached to the inner shaft seal connecting plate (2).

3. The shaft seal structure of a butterfly valve according to claim 1, wherein: the third waterproof pad (12) is arc-shaped, gas is filled in the inner side of the third waterproof pad (12), and the third waterproof pad (12) is movably sleeved in the valve (3).

4. The shaft seal structure of a butterfly valve according to claim 1, wherein: the front end of the first sealing plate (6) penetrates through the inside of the connecting column (4), a bolt is arranged on the outside of the connecting column (4), and the first waterproof pad (7) is clamped between the sealing sleeve (8) and the first sealing plate (6).

5. The shaft seal structure of a butterfly valve according to claim 1, wherein: the middle part centre gripping of second closing plate (9) is in the outside of spliced pole (4) upper end, the middle part of second closing plate (9) extends to the inside of spliced pole (4), the outside of second closing plate (9) pass spliced pole (4) and simultaneously with rotate between the handle (11) the mutual activity cup joint.

6. The shaft seal structure of a butterfly valve according to claim 1, wherein: the lower end of the rotating handle (11) is in contact with the upper part of the thread bush (10), and the upper end of the second sealing plate (9) penetrates through the inside of the thread bush (10).

7. The shaft seal structure of a butterfly valve according to claim 1, wherein: the shaft seal plate (13) is installed at both ends of the inner shaft seal connecting plate (2), meanwhile, a baffle is installed on one side of the inner portion of the shaft seal plate (13), the baffle is located outside the valve (3), and the second waterproof pad (16) is attached to the inner side of the shaft seal plate (13).