CN221145339U - A flange type center line soft seal butterfly valve - Google Patents

Abstract

The utility model relates to the technical field of center line butterfly valves and discloses a flange type center line soft sealing butterfly valve which comprises a valve body, wherein a lower connecting seat is fixedly connected to the bottom of the valve body, a valve groove is formed in the top of the lower connecting seat in a penetrating mode, a bearing is fixedly connected to the inner wall of the valve groove, a valve rod is fixedly connected to the bearing and penetrates through the valve body, an upper connecting seat is fixedly connected to the top of the valve body, a valve plate is fixedly connected to the outer diameter of the valve rod in a penetrating mode, the valve plate is arranged in the valve body, an arc-shaped ring is fixedly connected to the outer diameter of the valve plate, and a convex ring is fixedly connected to the inner wall of the valve body. According to the utility model, the limiting groove, the limiting plate, the fixing plate, the mounting groove, the spring, the bolt and the slot are mutually matched to work, so that the effect of disassembling and replacing the second sealing ring is realized, and meanwhile, the second sealing ring and the arc sealing ring are attached to the inner wall of the slot more closely, and the effect of better sealing performance is achieved.

Description

A flange type center line soft seal butterfly valve

Technical Field

The utility model relates to the technical field of center line butterfly valves, in particular to a flange type center line soft sealing butterfly valve.

Background technique

Butterfly valve, also known as flap valve, is a regulating valve with a simple structure. It can be used for the on-off control of low-pressure pipeline media. The butterfly valve refers to a valve with a closing member (valve disc or butterfly plate) as a disc, which rotates around the valve axis to achieve opening and closing. The center line butterfly valve is a component used to achieve on-off and flow control of the pipeline system. It has been widely used in many fields such as petroleum, chemical industry, metallurgy, hydropower, etc.

After searching, the existing Chinese patent publication number is: CN212407590U, which provides a centerline soft-sealed butterfly valve for regulating or cutting off the flow of industrial pipelines. The patent makes the valve plate more firm and stable through the connection between the valve body, valve seat, valve stem, valve plate, upper sealing ring, upper bearing, lower sealing ring and lower bearing, and solves the problem that the valve plate tends to move upward when impacted by the fluid, which will cause the valve plate to retreat for a long time and cause the valve body to be unable to be used normally. The coordination between the valve stem, gear plate, gear rod, rotating shaft, rotating shaft groove, gear bearing and rotating plate makes it more labor-saving and simple to operate the centerline soft-sealed butterfly valve, and it is also convenient to adjust or cut off the flow in the pipeline.

Although the above patent can solve the problem that the valve body cannot be used normally and is not convenient for adjusting or cutting off the flow rate in the pipeline, the above-mentioned center line soft seal butterfly valve for adjusting or cutting off the flow rate of industrial pipelines still has the following problems: the sealing ring cannot be disassembled and replaced, the practicability is not strong, and the sealing performance is poor.

In view of the above problems, a flange type center line soft sealing butterfly valve is proposed.

Utility Model Content

The utility model aims to provide a flange type center line soft sealing butterfly valve, which solves the problems in the background technology that the sealing ring cannot be disassembled and replaced, the practicability is not strong, and the sealing performance is not good.

To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a flange-type centerline soft-sealed butterfly valve, comprising a valve body, a lower connecting seat fixedly connected to the bottom of the valve body, a valve slot passing through and arranged on the top of the lower connecting seat, a bearing fixedly connected to the inner wall of the valve slot, a valve stem fixedly connected to the bearing and the valve stem passing through the valve body, an upper connecting seat fixedly connected to the top of the valve body, a valve plate passing through and fixedly connected to the outer diameter of the valve stem, the valve plate being arranged in the valve body, an arc ring fixedly connected to the outer diameter of the valve plate, a convex ring fixedly connected to the inner wall of the valve body, a slot passing through and arranged on the upper and lower ends of the upper connecting seat, a sealing assembly being arranged in the slot, a connecting column connected to the top of the sealing assembly, and a fixing assembly connected to the top of the connecting column.

By adopting the above technical solution, both sides of the arc ring have inclined surfaces, the convex ring is made of rubber material, and the positions of the convex ring and the arc ring correspond to each other, which can make the arc ring and the convex ring contact more closely.

As a further description of the above technical solution: the fixing assembly includes a fixing plate, the fixing plate and the top of the upper connecting seat are threadedly connected with bolts on both sides, the bottom of the fixing plate is fixedly connected to the top of the connecting column, the middle of the fixing plate and the connecting column are penetrated and provided with a first through groove, both sides of the fixing plate are fixedly connected with limiting plates, both ends of the limiting plate are provided with limiting blocks, the limiting grooves are provided on the opposite side of the limiting block and the limiting plates are arranged in the limiting grooves.

By adopting the above technical solution, the fixing plate is fixed to the upper connecting seat by bolts, the valve stem passes through the upper connecting seat and the second sealing ring, connecting column and fixing plate inside, and the bottom of the limiting groove is closed.

As a further description of the above technical solution: the sealing assembly includes a second sealing ring, the top of the second sealing ring is fixedly connected to the bottom of the connecting column, the upper and lower ends of the second sealing ring are penetrated and provided with a second through groove, the outer side of the second sealing ring is provided with an installation groove, the installation groove is fixedly connected with a uniformly distributed spring, and the other end of the spring is fixedly connected with an arc-shaped sealing ring.

By adopting the above technical solution, the arc-shaped sealing ring is arranged inside the installation groove, and the outer diameter of the arc-shaped sealing ring is smooth to facilitate entering the slot.

As a further description of the above technical solution: a hand wheel is arranged on the top of the valve stem.

By adopting the above technical solution, the hand wheel on the valve stem can be disassembled, so as to facilitate taking out the fixing plate, the connecting column and the second sealing ring.

As a further description of the above technical solution: a first sealing ring is arranged on the top of the valve groove and the first sealing ring is arranged above the bearing.

By adopting the above technical solution, the valve stem passes through the first sealing ring in the valve groove and the outer diameter of the lower end is fixedly connected to the bearing.

As a further description of the above technical solution: both ends of the outer wall of the valve body are fixedly connected with side flanges, and both sides of the side flanges are penetrated and provided with connecting holes.

By adopting the above technical solution, quick installation can be achieved through the side flange and the connecting hole.

As a further description of the above technical solution: the arc-shaped sealing ring is arranged in the installation groove and the outer wall of the arc-shaped sealing ring is slidably connected to the inner wall of the installation groove.

By adopting the above technical solution, a better sealing effect can be achieved.

As a further description of the above technical solution: one side of the limit block is fixedly connected to the outer wall of the upper connecting seat.

By adopting the above technical solution, the effect of fixing the limit block and the upper connecting seat is achieved.

Compared with the prior art, the beneficial effects of the utility model are as follows:

The utility model provides a flange type center line soft sealing butterfly valve, which realizes the effect of disassembling and replacing the second sealing ring through the cooperation of the limit groove, the limit plate, the fixing plate, the connecting column, the second sealing ring, the second through groove, the installation groove, the spring, the arc sealing ring, the bolt and the slot, and also can make the second sealing ring and the arc sealing ring fit better with the inner wall of the slot, thereby achieving a better sealing effect.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is an exploded schematic diagram of the overall structure of the utility model;

Figure 2 is a schematic diagram of the overall structure of the utility model;

FIG3 is an exploded view of the fixing assembly of the present invention;

FIG. 4 is an exploded view of the sealing assembly of the present invention.

In the figure: 1. valve body; 2. side flange; 3. connecting hole; 4. lower connecting seat; 5. valve slot; 6. bearing; 7. first sealing ring; 8. valve stem; 9. hand wheel; 10. upper connecting seat; 11. valve plate; 12. arc ring; 13. convex ring; 14. slot; 15. connecting column; 16. first through groove; 17. fixing plate; 18. limiting plate; 19. bolt; 20. limiting block; 21. limiting groove; 22. second sealing ring; 23. second through groove; 24. mounting groove; 25. spring; 26. arc sealing ring.

Detailed ways

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings.

In conjunction with Figures 1 and 2, a flange-type centerline soft-sealed butterfly valve of the utility model comprises a valve body 1, a lower connecting seat 4 is fixedly connected to the bottom of the valve body 1, a valve stem 8 can pass through the valve body 1 and limit the lower end of the valve stem 8 through the lower connecting seat 4, a valve groove 5 is penetrated and arranged on the top of the lower connecting seat 4, the valve groove 5 is used to place the lower end of the valve stem 8, a bearing 6 is fixedly connected to the inner wall of the valve groove 5, the bearing 6 makes the valve stem 8 rotate better, the valve stem 8 is fixedly connected in the bearing 6 and the valve stem 8 passes through the valve body 1, an upper connecting seat 10 is fixedly connected to the top of the valve body 1, the upper connecting seat 10 plays a fixing effect, a valve plate 11 is penetrated and fixedly connected on the outer diameter of the valve stem 8, the valve plate 11 plays a role in controlling the flow, the valve plate 11 is arranged in the valve body 1, and an arc ring 12 is fixedly connected on the outer diameter of the valve plate 11, A convex ring 13 is fixedly connected to the inner wall of the valve body 1, and the contact and fit between the arc ring 12 and the convex ring 13 can increase the sealing performance. The upper connecting seat 10 is penetrated and provided with slots 14 at the upper and lower ends. The slots 14 are convenient for inserting the connecting column 15 and the second sealing ring 22. A sealing assembly is arranged in the slot 14. The top of the sealing assembly is connected with a connecting column 15, and the connecting column 15 is used to fix the second sealing ring 22. The top of the connecting column 15 is connected with a fixing assembly. A hand wheel 9 is arranged on the top of the valve stem 8, and the rotation of the valve plate 11 is controlled by the hand wheel 9. A first sealing ring 7 is arranged on the top of the valve groove 5 and the first sealing ring 7 is arranged above the bearing 6 to play a sealing role. Side flanges 2 are fixedly connected to both ends of the outer wall of the valve body 1, and connecting holes 3 are penetrated and provided on both sides of the side flange 2. The side flange 2 is convenient for installing the valve body 1.

In conjunction with Figures 2 and 3, the fixing assembly includes a fixing plate 17, and bolts 19 are threadedly connected on both sides of the fixing plate 17 and the top of the upper connecting seat 10. The bolts 19 are used to fix the fixing plate 17. The bottom of the fixing plate 17 is fixedly connected to the top of the connecting column 15. The middle of the fixing plate 17 and the connecting column 15 are penetrated and provided with a first through groove 16. The first through groove 16 facilitates the passage of the valve stem 8. Both sides of the fixing plate 17 are fixedly connected to a limiting plate 18, and the limiting plate 18 can limit the fixing plate 17. Limiting blocks 20 are provided at both ends of the limiting plate 18, and a limiting groove 21 is provided on the opposite side of the limiting block 20, and the limiting plate 18 is arranged in the limiting groove 21. The limiting groove 21 makes the limiting effect better, and one side of the limiting block 20 is fixedly connected to the outer wall of the upper connecting seat 10.

In conjunction with Figure 4, the sealing assembly includes a second sealing ring 22, which can seal the slot 14. The top of the second sealing ring 22 is fixedly connected to the bottom of the connecting column 15. The second sealing ring 22 is penetrated and provided with a second through groove 23 at the upper and lower ends. A mounting groove 24 is provided on the outer side of the second sealing ring 22. The spring 25 and the arc-shaped sealing ring 26 can be conveniently installed in the mounting groove 24. The mounting groove 24 is fixedly connected with evenly distributed springs 25, and the other ends of the springs 25 are fixedly connected with arc-shaped sealing rings 26. The arc-shaped sealing ring 2 can better enter the slot 14. The arc-shaped sealing ring 26 is arranged in the mounting groove 24 and the outer wall of the arc-shaped sealing ring 26 is slidably connected to the inner wall of the mounting groove 24. The spring 25 cooperates to realize the expansion and contraction of the arc-shaped sealing ring 26 in the mounting groove 24.

Working principle: when the second sealing ring 22 needs to be installed, the hand wheel 9 is removed, the fixing plate 17 is passed through the valve stem 8 and placed above the upper connecting seat 10, the connecting column 15 and the second sealing ring 22 below the fixing plate 17 are inserted into the slot 14, and then the limiting plates 18 on both sides of the fixing plate 17 are inserted into the limiting grooves 21 on both sides of the upper connecting seat 10, and then the fixing plate 17 is fixed, and then the bolts 19 above the fixing plate 17 are passed through the fixing plate 17 to fix the fixing plate 17 on the upper connecting seat 10, so as to achieve the effect of quick installation. As a result, when the second sealing ring 22 enters the slot 14, the inner wall of the slot 14 squeezes the arcuate sealing ring 26, causing the arcuate sealing ring 26 to shrink in the installation slot 24. After it drops to a certain position, the elastic force of the spring 25 makes the second sealing ring 22 and the arcuate sealing ring 26 fit more closely to the inner wall of the slot 14, thereby achieving a better sealing effect. When the valve body 1 needs to be closed, the valve plate 11 drives the arcuate ring 12 to rotate. When it contacts the inner wall of the valve body 1, the arcuate ring 12 contacts and fits with the convex ring 13, thereby improving the sealing performance of the valve plate 11.

It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

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

Claims (8)

1. A flange-type centerline soft-sealed butterfly valve, comprising a valve body (1), characterized in that: the bottom of the valve body (1) is fixedly connected to a lower connecting seat (4), the top of the lower connecting seat (4) penetrates and is provided with a valve groove (5), the inner wall of the valve groove (5) is fixedly connected to a bearing (6), the bearing (6) is fixedly connected to a valve stem (8) and the valve stem (8) penetrates the valve body (1), the top of the valve body (1) is fixedly connected to an upper connecting seat (10), and the outer diameter of the valve stem (8) is A valve plate (11) is passed through and fixedly connected, the valve plate (11) is arranged in the valve body (1), an arc ring (12) is fixedly connected on the outer diameter of the valve plate (11), a convex ring (13) is fixedly connected to the inner wall of the valve body (1), the upper and lower ends of the upper connecting seat (10) are passed through and provided with slots (14), a sealing component is arranged in the slot (14), the top of the sealing component is connected to a connecting column (15), and the top of the connecting column (15) is connected to a fixing component. 2. A flange-type centerline soft-sealed butterfly valve according to claim 1, characterized in that: the fixing assembly includes a fixing plate (17), the fixing plate (17) and the top of the upper connecting seat (10) are both threadedly connected with bolts (19), the bottom of the fixing plate (17) is fixedly connected to the top of the connecting column (15), the middle of the fixing plate (17) and the connecting column (15) are penetrated and provided with a first through groove (16), both sides of the fixing plate (17) are fixedly connected with a limiting plate (18), both ends of the limiting plate (18) are provided with a limiting block (20), the opposite side of the limiting block (20) is provided with a limiting groove (21) and the limiting plate (18) is arranged in the limiting groove (21). 3. A flange-type centerline soft-seal butterfly valve according to claim 1, characterized in that: the sealing assembly includes a second sealing ring (22), the top of the second sealing ring (22) is fixedly connected to the bottom of the connecting column (15), the upper and lower ends of the second sealing ring (22) are penetrated and provided with a second through groove (23), the outer side of the second sealing ring (22) is provided with a mounting groove (24), the mounting groove (24) is fixedly connected with a uniformly distributed spring (25), and the other end of the spring (25) is fixedly connected with an arc-shaped sealing ring (26). 4. A flange-type center-line soft-sealed butterfly valve according to claim 1, characterized in that a hand wheel (9) is provided on the top of the valve stem (8). 5. A flange-type centerline soft-sealed butterfly valve according to claim 1, characterized in that a first sealing ring (7) is arranged on the top of the valve groove (5) and the first sealing ring (7) is arranged above the bearing (6). 6. A flange-type centerline soft-sealed butterfly valve according to claim 1, characterized in that: both ends of the outer wall of the valve body (1) are fixedly connected with side flanges (2), and both sides of the side flange (2) are penetrated and provided with connecting holes (3). 7. A flange-type centerline soft-sealed butterfly valve according to claim 3, characterized in that the arc-shaped sealing ring (26) is arranged in the installation groove (24) and the outer wall of the arc-shaped sealing ring (26) is slidably connected to the inner wall of the installation groove (24). 8. A flange-type centerline soft-sealed butterfly valve according to claim 2, characterized in that one side of the limit block (20) is fixedly connected to the outer wall of the upper connecting seat (10).