CN211951472U - Butterfly valve seat - Google Patents

Abstract

The utility model discloses a butterfly valve seat, comprising a valve seat body, a sealing ring and a sealing groove. The inner side of the valve seat body is provided with a sealing ring, and both sides inside the sealing ring are provided with sealing grooves. The inside of the sealing groove is uniformly installed with a telescopic spring, and the end of the telescopic spring away from the valve seat body is installed with a sealing rubber strip, and a third butterfly rod installation hole is arranged at the middle position of the top of the sealing ring. The utility model is provided with a sealing ring, a sealing rubber strip and a telescopic spring, and an arc-shaped groove and an arc-shaped convex part are arranged on the sealing rubber strip. When the butterfly plate is closed, the edge position of the butterfly plate is clamped in the arc-shaped In the groove, liquid and gas cannot enter the arc-shaped groove through the barrier of the arc-shaped convex part, so that the sealing strip and the butterfly plate are kept sealed, which can improve the sealing performance of the device, and can effectively prevent liquid and Gas leak.

Description

A butterfly valve seat

technical field

The utility model relates to the technical field of butterfly valve fittings, in particular to a butterfly valve seat.

Background technique

Butterfly valve, also known as flap valve, is a kind of regulating valve with simple structure. Butterfly valve that can be used for on-off control of low-pressure pipeline medium means that the closing member (disc or butterfly plate) is a disc, which rotates around the valve shaft to achieve opening and closing. A kind of valve, the valve can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media, the valve seat is the main body of the butterfly valve, and the valve seat is installed inside The butterfly plate can adjust the flow rate by rotating the butterfly plate. In order to improve the sealing performance of the existing butterfly valve seat, a sealing ring is often installed inside the valve seat, and the sealing performance is improved through the cooperation of the sealing ring and the butterfly plate. In order to enable the butterfly plate to rotate, the inner diameter of the sealing ring is larger than the diameter of the butterfly plate, so that the inner diameter of the butterfly plate and the sealing ring fit together. The gap leaks out, which affects the sealing performance. At the same time, after the sealing ring is used for a period of time, the sealing ring is prone to wear and rust, which increases the gap between the sealing ring and the butterfly plate. The sealing ring of the existing butterfly valve seat cannot be used alone. For replacement, the entire valve seat needs to be replaced, the maintenance cost is high, and resources are wasted.

Utility model content

The purpose of the present invention is to provide a butterfly valve seat to solve the problems raised in the above background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a butterfly valve seat, comprising a valve seat body, a sealing ring and a sealing groove, a sealing ring is installed on the inner side of the valve seat body, and both sides inside the sealing ring They are all provided with sealing grooves, and telescopic springs are evenly installed inside the sealing grooves, and a sealing rubber strip is installed at one end of the telescopic springs away from the valve seat body. The middle position of the top of the sealing ring is provided with a third The butterfly rod installation hole, and the middle position of the bottom of the sealing ring is provided with a first butterfly rod installation hole, and one end of the top of the valve seat body is provided with a third installation screw hole, and the inner thread of the third installation screw hole is installed with a third installation screw hole. Two mounting bolts, one end of the bottom of the valve seat body away from the third mounting screw hole is provided with a first mounting screw hole, and the inner thread of the first mounting screw hole is mounted with a first mounting bolt.

Preferably, arc-shaped grooves are provided in the middle of one end of the sealing rubber strip away from the telescopic spring, and arc-shaped protrusions are provided on both sides of the end of the sealing rubber strip away from the telescopic spring.

Preferably, a fourth butterfly rod mounting hole is provided at the middle position of the top of the valve seat body, and a second butterfly rod mounting hole is provided at the middle position of the bottom of the valve seat body.

Preferably, the bottom of the sealing ring is provided with a second mounting screw hole that cooperates with the first mounting screw at the position facing the first mounting screw hole, and the top of the sealing ring is provided with the third mounting screw hole at the position facing the third mounting screw hole. The fourth mounting screw hole in which the two mounting bolts cooperate with each other.

Preferably, valve seat mounting sheets are evenly mounted on the outer side of the valve seat body, and mounting holes are provided inside the valve seat mounting sheets.

Preferably, a rubber cap is installed at one end of the first installation bolt away from the valve seat body, and an anti-skid pattern is provided on the outer side of the rubber cap.

Compared with the prior art, the beneficial effects of the present utility model are: the butterfly valve seat is provided with a sealing ring, a sealing rubber strip and a telescopic spring, and the sealing rubber strip is provided with an arc-shaped groove and an arc-shaped convex part, When the butterfly plate is closed, the edge of the butterfly plate is clamped in the arc-shaped groove, and the liquid and gas cannot enter the arc-shaped groove through the barrier of the arc-shaped protrusion, so that the sealing strip and the butterfly plate are separated. Keeping the seal, the sealing performance of the device can be improved, and the leakage of liquid and gas can be effectively prevented. The third installation screw hole and the fourth installation screw hole are used together, and the first installation bolt is unscrewed from the second installation screw hole, and the second installation bolt is unscrewed from the fourth installation screw hole, and the sealing ring can be installed. Replacement, when the sealing ring is worn or corroded seriously, the sealing ring can be replaced separately, without the need to replace the valve seat body as a whole, which is conducive to reducing maintenance costs and resource waste.

Description of drawings

Fig. 1 is the front sectional schematic diagram of the utility model;

2 is a schematic front view of the utility model;

3 is a schematic top view of the sealing rubber strip of the present invention.

In the figure: 1. Valve seat body; 2. First butterfly rod mounting hole; 3. Second butterfly rod mounting hole; 4. First mounting bolt; 5. First mounting screw hole; 6. Second mounting screw hole; 7. Sealing ring; 8. Sealing groove; 9. Mounting hole for third butterfly rod; 10. Mounting hole for fourth butterfly rod; 11. Second mounting bolt; 12. Third mounting screw hole; 13. Fourth mounting screw Hole; 14. Sealing strip; 15. Valve seat mounting plate; 16. Telescopic spring; 17. Arc-shaped groove; 18. Arc-shaped protrusion.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

1-3, an embodiment provided by the present invention: a butterfly valve seat, including a valve seat body 1, a sealing ring 7 and a sealing groove 8, the inner side of the valve seat body 1 is installed with a sealing ring 7, In addition, both sides inside the sealing ring 7 are provided with sealing grooves 8, and the interior of the sealing grooves 8 are uniformly installed with telescopic springs 16, and one end of the telescopic springs 16 away from the valve seat body 1 is installed with a sealing rubber strip 14 to seal the grooves. The middle position of the top of the ring 7 is provided with a third butterfly rod installation hole 9, and the middle position of the bottom of the sealing ring 7 is provided with a first butterfly rod installation hole 2, and one end of the top of the valve seat body 1 is provided with a third installation screw hole 12, and the inner thread of the third installation screw hole 12 is installed with the second installation bolt 11, the bottom end of the valve seat body 1 away from the third installation screw hole 12 is provided with a first installation screw hole 5, and the first installation screw hole 5 A first mounting bolt 4 is installed on the inner thread of the .

In this implementation:

Further, arc-shaped grooves 17 are provided at the middle position of one end of the sealing rubber strip 14 away from the telescopic spring 16, and arc-shaped protrusions 18 are provided on both sides of the end of the sealing rubber strip 14 away from the expansion spring 16. When closed, the edge of the butterfly plate is clamped in the arc-shaped groove 17, and the liquid and gas cannot enter the arc-shaped groove 17 through the blocking of the arc-shaped protrusion 18, so that the sealing strip 14 and the butterfly plate are blocked. Sealing is maintained between them, so that the sealing performance of the device can be improved, and the leakage of liquid and gas can be effectively prevented.

Further, a fourth butterfly rod installation hole 10 is provided at the middle position of the top of the valve seat body 1, and a second butterfly rod installation hole 3 is provided at the middle position of the bottom of the valve seat body 1, so as to facilitate the installation of the butterfly rod and the butterfly plate.

Further, a second installation screw hole 6 that cooperates with the first installation bolt 4 is provided at the position where the bottom of the sealing ring 7 faces the first installation screw hole 5 , and the top of the sealing ring 7 faces the third installation screw hole 12 position. A fourth installation screw hole 13 is provided that cooperates with the second installation bolt 11 , the first installation bolt 4 is unscrewed from the second installation screw hole 6 , and the second installation bolt 11 is removed from the fourth installation screw hole 13 The sealing ring 7 can be replaced by unscrewing it. When the sealing ring 7 is worn or corroded seriously, the sealing ring 7 can be replaced independently without replacing the valve seat body 1 as a whole, which is beneficial to reduce maintenance costs and resource waste.

Further, valve seat mounting pieces 15 are evenly mounted on the outer side of the valve seat body 1 , and the inside of the valve seat mounting pieces 15 are all provided with mounting holes to facilitate the installation of the valve seat body 1 .

Further, a rubber cap is installed at one end of the first installation bolt 4 away from the valve seat body 1 , and the outer side of the rubber cap is provided with an anti-slip pattern, which is convenient for screwing the first installation bolt 4 .

Working principle: When the butterfly plate is closed, the butterfly plate rotates and firstly contacts the arc-shaped protrusion 18 on the sealing rubber strip 14, the sealing rubber strip 14 is squeezed by the butterfly plate and compresses the telescopic spring 16, the butterfly plate continues to rotate, and the butterfly When the plate is completely closed, the butterfly plate slides into the arc-shaped groove 17 through the arc-shaped protrusion 18, and the elastic action of the telescopic spring 16 makes it push the sealing strip 14, so that the inner side of the arc-shaped groove 17 is close to the butterfly plate. , through the barrier of the arc-shaped protrusion 18, the liquid and gas cannot enter the arc-shaped groove 17, so that the sealing strip 14 and the butterfly plate are kept sealed. When the butterfly plate is opened, the butterfly plate is removed from the arc-shaped groove 17. Out of the transfer, the butterfly plate is in contact with the arc-shaped protrusion 18, and the sealing rubber strip 14 is squeezed by the butterfly plate and compresses the telescopic spring 16, so that the sealing rubber strip 14 will not hinder the rotation of the butterfly plate, so that the butterfly plate can be released from the seal. When the rubber strip 14 is turned out, and the sealing ring 7 is worn or corroded seriously, the sealing ring 7 can be replaced separately. 11. Unscrew from the fourth installation screw hole 13, the sealing ring 7 can be disassembled from the inside of the valve seat body 1 as a whole, then the new sealing ring 7 is put into the valve seat body 1, and the first installation bolt 4 is screwed in The new sealing ring 7 can be fixed inside the valve seat body 1 by screwing the second mounting bolt 11 into the fourth mounting screw hole 13 in the second installation screw hole 6 , thereby completing the replacement process of the sealing ring 7 .

Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Within the spirit and principle of the present utility model, any modifications, equivalent replacements, improvements, etc. made shall be included within the protection scope of the present utility model.

Claims (6)

1. The utility model provides a butterfly valve disk seat, includes disk seat body (1), sealing washer (7) and sealed recess (8), its characterized in that: a sealing ring (7) is arranged on the inner side of the valve seat body (1), sealing grooves (8) are arranged on two sides of the inner part of the sealing ring (7), the inside of the sealing groove (8) is uniformly provided with telescopic springs (16), and one end of the extension spring (16) far away from the valve seat body (1) is provided with a sealing rubber strip (14), a third butterfly rod mounting hole (9) is arranged at the middle position of the top of the sealing ring (7), and the middle position of the bottom of the sealing ring (7) is provided with a first butterfly rod mounting hole (2), one end of the top of the valve seat body (1) is provided with a third mounting screw hole (12), and the inner thread of the third mounting screw hole (12) is provided with a second mounting bolt (11), a first mounting screw hole (5) is arranged at one end of the bottom of the valve seat body (1) far away from the third mounting screw hole (12), and a first mounting bolt (4) is mounted on the inner thread of the first mounting screw hole (5).

2. A butterfly valve seat in accordance with claim 1, wherein: the middle position of one end, far away from the telescopic spring (16), of the sealing rubber strip (14) is provided with an arc-shaped groove (17), and the two sides, far away from the telescopic spring (16), of the sealing rubber strip (14) are provided with arc-shaped protruding parts (18).

3. A butterfly valve seat in accordance with claim 1, wherein: a fourth butterfly rod mounting hole (10) is formed in the middle of the top of the valve seat body (1), and a second butterfly rod mounting hole (3) is formed in the middle of the bottom of the valve seat body (1).

4. A butterfly valve seat in accordance with claim 1, wherein: and a second mounting screw hole (6) matched with the first mounting bolt (4) is formed in the position, right opposite to the first mounting screw hole (5), of the bottom of the sealing ring (7), and a fourth mounting screw hole (13) matched with the second mounting bolt (11) is formed in the position, right opposite to the third mounting screw hole (12), of the top of the sealing ring (7).

5. A butterfly valve seat in accordance with claim 1, wherein: the outer side of the valve seat body (1) is uniformly provided with valve seat installation pieces (15), and installation holes are formed in the valve seat installation pieces (15).

6. A butterfly valve seat in accordance with claim 1, wherein: the rubber cap is installed to the one end that disk seat body (1) was kept away from in first construction bolt (4), and the outside of rubber cap is provided with anti-skidding line.

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