Compensation adjusting type ball valve

Abstract

The utility model discloses a compensation adjusting type ball valve which comprises a valve body, a circular channel and a spherical cavity are arranged in the valve body, the spherical cavity is arranged in the middle of the channel and communicated with the channel, and clamping grooves are symmetrically arranged on two sides of the spherical cavity. The valve seat is composed of the sealing ring and the elastic pieces, the sealing ring is abraded after the ball valve is opened and closed repeatedly, the thickness of the sealing ring is reduced, due to the fact that the sealing ring is of a structure with the thick outer portion and the narrow inner portion, the sealing ring is pushed through elastic force of the elastic pieces to conduct compensation adjustment after abrasion is generated, and the sealing ring can be tightly plugged in a gap between the ball body and the circular channel to conduct sealing. And the worn valve seat does not need to be replaced, the sealing performance of the ball valve is ensured, and the problems existing in the prior art are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, in particular to a compensation-adjustable ball valve. Background Technique

[0002] A ball valve is a valve in which the closing member is driven by a valve stem and rotates around the axis of the ball valve. The ball valve can be used for the regulation and control of fluids, and can be divided into pneumatic ball valves, electric ball valves and manual ball valves. The ball valve is mainly used for cutting, distributing and changing the flow direction of the medium in the pipeline. It is suitable for use as a switch and a cut-off valve. The ball valve is widely used in industries such as petroleum refining, long-distance pipelines, chemical industry, papermaking, pharmaceuticals, water conservancy, electric power, municipal administration, and steel.

[0003] At present, the valve seat and the ball of the existing ball valve are in surface contact. After repeated opening and closing, it is inevitable that the valve seat with a sealing function will be pressed and worn, which not only reduces the sealing performance of the ball valve, but also makes it difficult to replace the valve seat. Therefore, there is an urgent need for a compensation-adjustable ball valve to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide a compensation-adjustable ball valve to solve the problems raised in the above background technique that after the ball valve is repeatedly opened and closed, it is inevitable that the valve seat with a sealing function will be pressed and worn, which not only reduces the sealing performance of the ball valve, but also makes it difficult to replace the valve seat.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A compensation-adjustable ball valve, including a valve body, a circular channel and a spherical chamber are arranged in the valve body, the spherical chamber is arranged in the middle of the channel and communicated with it, and clamping grooves are symmetrically arranged on both sides of the spherical chamber;

[0006] A closing member, including a ball arranged in the spherical chamber and a valve stem passing through the valve body and located above the ball, one end of the valve stem is connected to the ball, and a rotating handle is arranged at the other end of the valve stem;

[0007] A valve seat, including a sealing ring and a plurality of elastic pieces arranged outside the sealing ring, the sealing ring and the elastic pieces are symmetrically arranged on both sides of the ball, one end of the elastic piece is installed on the sealing ring, and the other end of the elastic piece is located in the clamping groove.

[0008] As a preferred scheme of the compensation-adjustable ball valve of the utility model, wherein: the clamping groove is located at the junction of the spherical chamber and the circular channel, and a fillet is arranged between the clamping groove and the circular channel.

[0009] As a preferred scheme of the compensation-adjustable ball valve of the utility model, wherein: the clamping groove is of an annular structure, the cross-section of the clamping groove is an L-shaped groove, and the elastic piece abuts against the L-shaped corner of the clamping groove.

[0010] As a preferred embodiment of the compensating and adjusting ball valve of the present utility model, wherein: both the inner side and the outer side of the sealing ring are arc surface structures, both ends of the sealing ring are circular surface structures, and the thickness of the sealing ring gradually decreases from outside to inside.

[0011] As a preferred embodiment of the compensating and adjusting ball valve of the present utility model, wherein: the inner side of the sealing ring is in contact with the sphere, and the outer side of the sealing ring is in contact with the fillet of the clamping groove.

[0012] As a preferred embodiment of the compensating and adjusting ball valve of the present utility model, wherein: a slot is further provided on the outer side of the sealing ring, and the slot is a ring structure, and the elastic sheet is inserted into the slot of the sealing ring.

[0013] As a preferred embodiment of the compensating and adjusting ball valve of the present utility model, wherein: the number of the elastic sheets provided on the outer side of the sealing ring is 2-8, and the elastic sheets are evenly distributed in an annular array.

[0014] As a preferred embodiment of the compensating and adjusting ball valve of the present utility model, wherein: when the elastic sheet is located in the clamping groove, it is arc-shaped and has a tendency to elastically recover to a straight surface.

[0015] Compared with the prior art, the beneficial effects of the present utility model are:

[0016] The valve seat of the present utility model is composed of a sealing ring and a plurality of elastic sheets. After the ball valve is repeatedly opened and closed, the sealing ring will be worn and its thickness will be reduced. Since the sealing ring has a structure that is thick outside and narrow inside, after wear, the elastic force of the elastic sheet is used to push the sealing ring for compensation and adjustment, so that the sealing ring can be tightly plugged into the gap between the sphere and the circular channel for sealing. Not only does it not need to replace the worn valve seat, but also the sealing performance of the ball valve is ensured, effectively solving the problems existing in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic cross-sectional structure diagram of the present utility model;

[0018] Figure 2 is a schematic structure diagram of the valve seat of the present utility model;

[0019] Figure 3 is a schematic front cross-sectional structure diagram of the present utility model;

[0020] Figure 4 is of the present utility model Figure 3 enlarged schematic structure diagram at A;

[0021] Figure 5 is a schematic overall structure diagram of the present utility model.

[0022] In the figure: 1. Valve body; 101. Circular channel; 102. Spherical chamber; 102a. Card slot; 103. Fillet; 2. Opening and closing member; 201. Sphere; 202. Valve stem; 203. Rotating handle; 3. Valve seat; 301. Sealing ring; 301a. Slot; 302. Elastic piece. Detailed implementation mode

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] Please refer to Figures 1-5 , a compensation-adjustable ball valve, including a valve body 1, a circular channel 101 and a spherical chamber 102 are arranged in the valve body 1, the spherical chamber 102 is arranged in the middle of the channel and communicates with it, and card slots 102a are symmetrically arranged on both sides of the spherical chamber 102;

[0025] An opening and closing member 2, including a sphere 201 arranged in the spherical chamber 102 and a valve stem 202 passing through the valve body 1 and located above the sphere 201, one end of the valve stem 202 is connected to the sphere 201, and a rotating handle 203 is arranged at the other end of the valve stem 202;

[0026] A valve seat 3, including a sealing ring 301 and a plurality of elastic pieces 302 arranged outside the sealing ring 301, the sealing ring 301 and the elastic pieces 302 are symmetrically arranged on both sides of the sphere 201, one end of the elastic piece 302 is installed on the sealing ring 301, and the other end of the elastic piece 302 is located in the card slot 102a.

[0027] In this embodiment, the card slot 102a is located at the junction of the spherical chamber 102 and the circular channel 101, and a fillet 103 is arranged between the card slot 102a and the circular channel 101, so that the circular channel 101 and the sealing ring 301 are in arc contact to reduce friction;

[0028] Specifically, the card slot 102a is a ring structure, the cross section of the card slot 102a is an L-shaped groove, and the elastic piece 302 abuts against the L-shaped corner of the card slot 102a. At this time, the elastic piece 302 is bent into an arc shape and has a certain elasticity. According to the loss of the sealing ring 301, the elastic piece 302 will gradually elastically recover to a straight state, and the end of the elastic piece 302 slides down along the card slot 102a and pushes the sealing ring 301 to move.

[0029] In this embodiment, both the inner side and the outer side of the sealing ring 301 are arc structures, both ends of the sealing ring 301 are circular surface structures, and the thickness of the sealing ring 301 gradually decreases from the outside to the inside;

[0030] It should be noted that both ends of the sealing ring 301 with a circular surface structure are streamlined and more smooth and practical. The sealing ring 301 has a structure with a thicker outer part and a narrower inner part. When the sealing ring 301 is worn, the elastic piece 302 can be used to push the sealing ring 301 to move, and the sealing ring 301 can be tightly plugged into the gap between the sphere 201 and the circular channel 101 to ensure the sealing performance.

[0031] Specifically, the inner side surface of the sealing ring 301 is in contact with the sphere 201, and the outer side surface of the sealing ring 301 is in contact with the rounded corner 103 of the card slot 102a, so that the sealing ring 301 can seal the gap between the sphere 201 and the circular channel 101.

[0032] An insertion slot 301a is also provided on the outer side surface of the sealing ring 301, and the insertion slot 301a is of an annular structure, and the elastic piece 302 is inserted into the insertion slot 301a of the sealing ring 301.

[0033] In this embodiment, the number of elastic pieces 302 provided on the outer side of the sealing ring 301 is 2 - 8, and the elastic pieces 302 are evenly distributed in an annular array. Specifically, when implemented, the number of elastic pieces 302 is set to 4, which provides sufficient thrust for the sealing ring 301. When the elastic piece 302 is located in the card slot 102a, it is arc-shaped and has a tendency to elastically recover to a straight surface. The elastic recovery performance of the elastic piece 302 is used to provide thrust compensation adjustment for the sealing ring 301, so that the sealing ring 301 can be tightly plugged into the gap between the sphere 201 and the circular channel 101.

[0034] In summary, after the ball valve repeatedly opens and closes and wears the sealing ring, the elastic piece is used to push the sealing ring for compensation adjustment, so that the sealing ring can be tightly plugged into the gap between the sphere and the circular channel for sealing. Not only does it not need to replace the worn valve seat, but also the sealing performance of the ball valve is ensured.

[0035] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A compensating regulating ball valve, characterized in that: include, A valve body (1), wherein a circular channel (101) and a spherical chamber (102) are provided in the valve body (1), wherein the spherical chamber (102) is provided in the middle of the channel and communicates with the channel, and slots (102a) are symmetrically provided on both sides of the spherical chamber (102); An opening and closing member (2) comprises a sphere (201) arranged in the spherical chamber (102) and a valve stem (202) penetrating the valve body (1) and located above the sphere (201), one end of the valve stem (202) being connected to the sphere (201), and the other end of the valve stem (202) being provided with a rotating handle (203); The valve seat (3) comprises a sealing ring (301) and a plurality of spring sheets (302) arranged outside the sealing ring (301), wherein the sealing ring (301) and the spring sheets (302) are symmetrically arranged on both sides of the sphere (201), one end of the spring sheet (302) is mounted on the sealing ring (301), and the other end of the spring sheet (302) is located in the slot (102a).

2. The compensating regulating ball valve according to claim 1 is characterized in that: The slot (102a) is located at the junction of the spherical chamber (102) and the circular channel (101), and a rounded corner (103) is provided between the slot (102a) and the circular channel (101).

3. The compensating regulating ball valve according to claim 2 is characterized in that: The card slot (102a) is an annular structure; the cross section of the card slot (102a) is an L-shaped slot; and the spring sheet (302) abuts against the L-shaped corner of the card slot (102a).

4. The compensating regulating ball valve according to claim 1 or 3, characterized in that: The inner side surface and the outer side surface of the sealing ring (301) are both arc surface structures, the two ends of the sealing ring (301) are round surface structures, and the thickness of the sealing ring (301) gradually decreases from the outside to the inside.

5. The compensating regulating ball valve according to claim 4 is characterized in that: The inner side surface of the sealing ring (301) is in contact with the spherical body (201), and the outer side surface of the sealing ring (301) is in contact with the rounded corner (103) of the clamping groove (102a).

6. The compensating regulating ball valve according to claim 5, characterized in that: The outer side surface of the sealing ring (301) is also provided with a slot (301a), and the slot (301a) is an annular structure, and the spring sheet (302) is inserted into the slot (301a) of the sealing ring (301).

7. The compensating regulating ball valve according to claim 1 or 6, characterized in that: The number of the spring pieces (302) arranged on the outside of the sealing ring (301) is 2-8, and the spring pieces (302) are evenly distributed in a ring array.

8. The compensating regulating ball valve according to claim 7, characterized in that: When the spring sheet (302) is located in the slot (102a), it is arc-shaped and has a tendency to elastically recover to a straight surface.

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