Special-shaped circlip and its regulating valve

Abstract

The present invention relates to the technical field of circlips, and particularly relates to a special-shaped circlip and a regulating valve thereof. The circlip body includes a plurality of support bodies with elastic deformation ability. The plurality of support bodies are connected end to end to form an annular structure. An opening is provided on the annular structure formed by the plurality of support bodies. Adjacent two support bodies intersect with each other to form a first vertex angle and form a repeating unit. When the special-shaped circlip and the regulating valve of the present invention are in use, a plurality of repeating units enclose to form an annular structure, and the second vertex angles of adjacent two repeating units are abutted against the valve seat, and the first vertex angles of adjacent two support bodies are abutted against the clamping groove of the valve body, ensuring that the special-shaped circlip has a certain spring pre-tightening force, and has excellent fixing and compensating performance for the valve seat, and the sealing performance of the ball core and the valve seat is still effective.

Description

Technical Field

[0001] The present invention relates to the technical field of circlips, and particularly to a special-shaped circlip and a regulating valve thereof. Background Art

[0002] Currently, during the operation of a 1 / 4 spherical V-type regulating ball valve, to prevent partial contact between the valve seat sealing surface and the spherical surface, which may cause the valve seat to warp due to unilateral force, a common shaft-end retaining ring is generally used for restriction. Although the problem of valve seat warping is solved, after long-term wear of the valve seat, due to the restriction of the retaining ring, the valve seat has no compensation, and the sealing specific pressure decreases accordingly, resulting in the failure of sealing performance and seriously affecting on-site use. Summary of the Invention

[0003] The technical problem to be solved by the present invention is as follows: In order to solve the problem that in the prior art, when the valve seat warps due to unilateral force, a common shaft-end retaining ring is generally used for restriction. Although the problem of valve seat warping is solved, after long-term wear of the valve seat, due to the restriction of the retaining ring, the valve seat has no compensation, and the sealing specific pressure decreases accordingly, resulting in the failure of sealing performance and seriously affecting on-site use. Now, a special-shaped circlip and a regulating valve thereof are provided.

[0004] The technical solution adopted by the present invention to solve its technical problems is: A special-shaped circlip includes a circlip body. The circlip body includes a plurality of support bodies with elastic deformation ability. The plurality of support bodies are connected end to end to form an annular structure. An opening is provided on the annular structure formed by the plurality of support bodies. Adjacent two support bodies cross each other to form a first vertex angle and form a repeating unit. The support bodies between adjacent two repeating units cross each other to form a second vertex angle. The first vertex angles on the annular structure are located on the same circumscribed circle. The second vertex angles on the annular structure are located on the same inscribed circle. The first vertex angle and the second vertex angle are located on different planes, and an included angle α is formed between the plane where the second vertex angle is located and the plane where the first vertex angle is located. Compared with the prior art, in this solution, an annular structure is formed by enclosing a plurality of repeating units, and the second vertex angles of adjacent two repeating units are abutted against the valve seat, and the first vertex angles of adjacent two support bodies are abutted against the clamping groove of the valve body, restricting the valve seat from being pushed into the valve cavity by the medium when in the open position and blocking the normal operation of the ball core, ensuring that the special-shaped circlip has a certain spring pre-tightening force, having excellent fixing and compensating performance for the valve seat, and still maintaining the sealing performance of the ball core and the valve seat.

[0005] Further, in order to facilitate manufacturing and ensure stable and reliable abutment in the clamping groove of the valve body, the first vertex angles on the annular structure are located on the same circumscribed circle.

[0006] Further, in order to facilitate manufacturing and ensure stable and reliable abutment on the valve seat, the second vertex angles on the annular structure are located on the same inscribed circle.

[0007] For ease of manufacturing, for ease of machining and manufacturing, further, the circumcircle and the incircle are concentric circles.

[0008] Further, the first vertex angle is an arc transition angle. The arc transition is to reduce the fatigue fracture phenomenon caused by stress concentration.

[0009] Further, the second vertex angle is an arc transition angle. The arc transition is to reduce the fatigue fracture phenomenon caused by stress concentration.

[0010] Further, an angle α is formed between the plane where the second vertex angle is located and the plane where the first vertex angle is located.

[0011] Further, the snap ring body is an integrally formed structure. The snap ring body is a steel wire, which ensures the overall strength of the snap ring body and improves the service life of the snap ring body. A regulating valve includes a valve body, a valve seat and a ball core arranged in the valve body. The valve seat is arranged between the ball core and the valve body, and a special-shaped snap ring as described above is installed between the valve seat and the ball core.

[0012] The beneficial effects of the present invention are as follows: When the special-shaped snap ring and its regulating valve of the present invention are in use, a ring structure is formed by enclosing multiple repeating units, and the second vertex angles of two adjacent repeating units are abutted against the valve seat, and the first vertex angles of two adjacent support bodies are abutted against the clamping groove of the valve body, ensuring that the special-shaped snap ring has a certain spring pre-tightening force, having excellent fixing and compensation performance for the valve seat, and still having effective sealing performance for the ball core and the valve seat, avoiding the warping of the existing valve seat due to unilateral force. Generally, an ordinary shaft end retaining ring is used for restriction. Although the problem of valve seat warping is solved, after the valve seat is worn for a long time, due to the restriction of the retaining ring, the valve seat has no compensation, and the sealing specific pressure will decrease accordingly, resulting in the failure of the sealing performance and seriously affecting the on-site use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below with reference to the drawings and embodiments.

[0014] Figure 1 is the front view of the present invention;

[0015] Figure 2 is the top view of the present invention;

[0016] Figure 3 is the structural schematic diagram of the specific application of the present invention.

[0017] In the figure: 1. Snap ring body, 2. Support body, 3. Opening, 4. First vertex angle, 5. Second vertex angle, 6. Valve body, 7. Valve seat, 8. Ball core, α is the angle formed between the plane where the second vertex angle is located and the plane where the first vertex angle is located, A. Circumcircle, B. Incircle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The present invention will be further described in detail below in conjunction with embodiments:

[0019] The present invention is not limited to the following specific embodiments. Those of ordinary skill in the art can implement the present invention in many other specific embodiments according to the content disclosed in the present invention. Or, any simple changes or modifications made using the design structure and concept of the present invention fall within the protection scope of the present invention. It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0020] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly defined and limited, the terms "mounted", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

[0022] Such as Figure 1-2As shown in the figure, a special-shaped circlip includes a circlip body 1, which is integrally formed by a non-closed special-shaped steel wire ring composed of twelve sides. The circlip body 1 includes twelve support bodies 2 with elastic deformation ability. The support bodies 2 can be steel wires with a circular cross-section. A plurality of the support bodies 2 are connected end to end to form an annular structure. An opening 3 is provided on the annular structure formed by the plurality of support bodies 2. The opening 3 is for the convenience of installing the circlip body 1 and also facilitates the elastic deformation of the circlip body 1. Adjacent two of the support bodies 2 cross each other to form six first vertex angles 4 and form a repeating unit. The support bodies 2 between adjacent two of the repeating units cross each other to form five second vertex angles 5. The first vertex angles 4 on the annular structure are located on the same circumscribed circle A, and the diameter of the circumscribed circle A is not less than the diameter of the card slot on the valve body 6. The second vertex angles 5 on the annular structure are located on the same inscribed circle B, and the diameter of the inscribed circle shall not be greater than the outer diameter of the valve seat 7; the first vertex angles 4 and the second vertex angles 5 are located on two different planes, and an included angle α is formed between the plane where the second vertex angles 5 are located and the plane where the first vertex angles 4 are located. The included angle α here is an acute angle, and the included angle α is determined according to the diameter of the ball core 8.

[0023] The circumscribed circle A and the inscribed circle B are concentric circles.

[0024] The first vertex angle 4 is an arc transition angle.

[0025] The second vertex angle 5 is an arc transition angle.

[0026] When the above special-shaped circlip and its regulating valve are in use, the circlip body 1 is a special-shaped structure, which is mainly used for fixing the valve seat 7 of the V-type regulating ball valve, avoiding the contact between the sealing surface part of the valve seat 7 and the ball core 8 when the valve is fully open, resulting in the inclination of the valve seat 7. During installation, a special tooling is used to press its six first vertex angles 4 into the card slot of the valve body 6. After the circlip body 1 enters the slot, it automatically rebounds to its original state, and the five second vertex angles 5 press on the valve seat 7. The card slot in the valve body 6 and the end face of the valve seat 7 are not on the same plane, ensuring that the special-shaped circlip has a certain spring pre-tightening force. Thus, the valve seat 7 is tightly pressed by the elastic deformation of the circlip body 1 and the valve seat 7 will not lose its elastic compensation, thereby ensuring the long-term effective sealing performance of the valve. The fixing and compensation performance of the valve seat 7 is excellent. After more than 40,000 times of load-bearing action tests, the sealing performance of the ball core 8 and the valve seat 7 is still effective.

[0027] Embodiment 2

[0028] Embodiment 2 is the application of Embodiment 1, specifically: As Figure 3 shown, a regulating valve includes a valve body 6 and a valve seat 7 and a ball core 8 arranged in the valve body 6. The valve seat 7 is arranged between the ball core 8 and the valve body 6. The above special-shaped circlip is installed between the valve seat 7 and the ball core 8.

[0029] Based on the inspiration of the ideal embodiments of the present invention, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A regulating valve, comprising a valve body (6), a valve seat (7) and a ball core (8) arranged inside the valve body (6), characterized in that: The valve seat (7) is arranged between the ball core (8) and the valve body (6), and a special-shaped circlip is installed between the valve seat (7) and the ball core (8); The special-shaped circlip includes a circlip body (1), and the circlip body (1) includes a plurality of support bodies (2) with elastic deformation ability. The plurality of support bodies (2) are connected end to end to form an annular structure. An opening (3) is arranged on the annular structure formed by the plurality of support bodies (2). Adjacent two support bodies (2) intersect with each other to form a first vertex angle (4) and form a repeating unit. The support bodies (2) between adjacent two repeating units intersect with each other to form a second vertex angle (5). The first vertex angle (4) and the second vertex angle (5) are located on different planes; The first vertex angles (4) on the annular structure are located on the same circumscribed circle (A); The second vertex angles (5) on the annular structure are located on the same inscribed circle (B); The circumscribed circle (A) and the inscribed circle (B) are concentric circles; During use, the second vertex angles (5) of adjacent two repeating units are used to abut against the valve seat (7), and the first vertex angles (4) of adjacent two support bodies (2) are used to abut against the clamping grooves on the valve body (6), so as to prevent the valve seat (7) from being pushed by the medium into the valve cavity to block the normal operation of the ball core when in the open position, ensure that the special-shaped circlip has a certain spring pre-tightening force, and fix and compensate the valve seat (7); An included angle α is formed between the planes where the second vertex angle (5) and the first vertex angle (4) are located, and the included angle α is an acute angle.

2. The regulating valve according to claim 1, characterized in that: The first vertex angle (4) is an arc transition angle.

3. The regulating valve according to claim 1, characterized in that: The second vertex angle (5) is an arc transition angle.

4. The regulating valve according to claim 1, characterized in that: The circlip body (1) is an integrally formed structure.

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