Diameter-variable automatic compensation sealing valve seat
By designing a variable-diameter automatic compensation sealed valve seat, the combination of an annular structure and elastic flexible parts solves the leakage problem caused by the fixed diameter of the existing valve seat, and realizes automatic compensation for processing errors and wear clearance, extends the service life of the valve and reduces the risk of leakage.
Patent Information
- Application Number
- CN202411972876.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-04-11
AI Technical Summary
The existing valve seat has a fixed diameter, which leads to processing errors and installation errors during the production process, resulting in the inability to control the assembly gap between the valve core and the valve seat, which in turn leads to an increase in leakage, affecting the service life of the valve and production tasks.
A variable diameter automatic compensation seal valve seat is designed, and the base of at least two arc-shaped structures is combined with the ring structure along the circumference, combined with the mating and preloading mechanism of the upper and lower connecting parts, and the elastic flexible parts are used to perform radial deformation, so as to achieve automatic compensation of processing errors and wear gaps.
This structure can effectively reduce the chance of valve leakage, extend the service life of the valve, ensure stable and reliable sealing, and the structure is simple and reliable.
Smart Images
Figure CN119802271A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of valve seats, and in particular to a variable diameter automatic compensation sealing valve seat. Background Art
[0002] The valve core and valve seat are key components in the valve, and the sealing performance between them is crucial to the overall function and efficiency of the valve. Internal leakage of the valve usually occurs at the position of the valve core and the sealing seat. Since the traditional valve seat is a fixed diameter, the processing error and installation error of the valve seat and the ball core during the production process lead to low processing accuracy of the valve seat or ball core, and the assembly gap between the valve core and the valve seat cannot be controlled. Therefore, during use, the wear of the ball core and the valve seat is aggravated, and the gap between the valve core and the valve seat sealing surface increases, which leads to increased leakage, affecting the service life of the valve and production tasks. Valve leakage usually causes serious production accidents. Summary of the invention
[0003] The technical problem to be solved by the present invention is: in order to solve the problem that the existing valve seat has a fixed diameter, the processing error and installation error of the valve seat and the ball center during the production process, resulting in low processing accuracy of the valve seat or the ball core, and the assembly gap between the valve core and the valve seat cannot be controlled. Therefore, during use, the wear of the ball core and the valve seat is aggravated, and the gap between the valve core and the valve seat sealing surface is increased, which leads to increased leakage, affecting the service life of the valve and production tasks. The leakage of the valve usually causes serious production accidents. A variable diameter automatic compensating sealing valve seat is provided.
[0004] The technical solution adopted by the present invention to solve the technical problem is: a variable diameter automatic compensation sealing valve seat, comprising a valve seat body of an annular structure, the valve seat body comprising at least two arc-shaped substrates, the substrates are sequentially connected end to end and enclose the valve seat body, each of the substrates has an upper connecting portion and a lower connecting portion sequentially arranged along the axial direction of the valve seat body;
[0005] The upper connecting portion is provided with a first protrusion at one end along the circumference of the valve seat body, and a first groove at the other end; the lower connecting portion is provided with a second groove at one end along the circumference of the valve seat body, and a second protrusion at the other end;
[0006] The first protrusion of the upper connection part of one of the two adjacent bases is arranged in the first groove of the upper connection part of the other, and an upper flexible member capable of elastic deformation is arranged between the first protrusion of one of the two adjacent bases and the first groove of the other;
[0007] The second groove portion at one end of the lower connection portion of the rear substrate of the two adjacent substrates is arranged on the second protrusion portion at the other end of the lower connection portion of the front substrate, and a lower flexible member with elastic deformation capability is arranged between the second groove portion at one end of the lower connection portion of the rear substrate of the two adjacent substrates and the second protrusion portion at the other end of the upper connection portion of the front substrate;
[0008] An end surface of the first protrusion close to the second protrusion in the axial direction of the valve seat body is a first matching surface, and an end surface of the second protrusion close to the first protrusion in the axial direction of the valve seat body is a second matching surface;
[0009] The first mating surface and the second mating surface between two adjacent substrates are in contact with each other;
[0010] The valve seat body is provided with a pre-tightening mechanism for maintaining the valve seat body in an annular structure. Compared with the prior art, the present solution uses at least two bases to form an annular valve seat body along a circle, the upper connecting part and the lower connecting part are matched between the two adjacent bases, and the pre-tightening mechanism always maintains the valve seat body in an annular structure, and the upper flexible part and the lower flexible part are matched between the two adjacent bases, so that the sealing valve seat has a certain radial deformation, and the valve seat body also plays a sealing and supporting role. This structure can automatically compensate for the processing error, assembly error and wear clearance between the ball core and the valve seat during use, ensure stable and reliable sealing, reduce the probability of valve leakage, thereby extending the service life of the valve, reducing the occurrence of leakage conditions, and has a simple and reliable structure.
[0011] In order to better ensure the strength of the valve seat body, some preferred embodiments are that a third groove portion is arranged on the first protrusion portion at one end of the upper connecting portion along the radial direction of the valve seat body, and a third protrusion portion is arranged on the first groove portion at the other end of the upper connecting portion along the radial direction of the valve seat body, the third groove portion matches the third protrusion portion, and the third groove portion on the first protrusion portion at one end of the upper connecting portion of the adjacent two substrates is arranged on the third protrusion portion on the first groove portion at the other end of the upper connecting portion of the preceding substrate.
[0012] In order to better ensure the strength of the valve seat body, some preferred embodiments are that a fourth protrusion is radially arranged on the second groove portion at one end of the lower connecting portion along the valve seat body, and a fourth groove is radially arranged on the second groove portion at the other end of the lower connecting portion along the valve seat body, the fourth protrusion matches the fourth groove portion, and the fourth protrusion on the second groove portion at one end of the lower connecting portion of the two adjacent substrates is arranged on the fourth groove portion on the second protrusion at the other end of the lower connecting portion of the previous substrate, the third groove portion at one end of the upper connecting portion on the substrate and the fourth protrusion at one end of the lower connecting portion are staggered with each other, and the third protrusion at the other end of the upper connecting portion on the substrate and the fourth groove portion at the other end of the lower connecting portion are staggered with each other.
[0013] In order to realize the pre-tightening mechanism, some preferred embodiments include a retaining spring, a retaining groove matching the retaining spring is provided on the outer circumference of the valve seat body, and the retaining spring is arranged in the retaining groove. The retaining groove on the outer circumference of the valve seat body cooperates with the retaining spring, which has a supporting pre-tightening effect on the valve seat body in both axial and radial directions. The retaining spring also limits the automatic compensation range of the valve seat body and ensures the strength of the valve seat body itself.
[0014] In order to ensure the strength of the valve seat body, in some preferred embodiments, the cross section of the clamping groove is a trapezoid, and the lower bottom edge and the upper bottom edge of the trapezoid are arranged from the outside to the inside along the radial direction of the valve seat body. The clamping groove of the trapezoidal mechanism matches the clamping spring, and the cross section of the clamping spring is also a trapezoid. When the valve core and the valve seat are in contact, the force is evenly applied, and there is a supporting pre-tightening effect in both the axial and radial directions to ensure the strength of the valve seat.
[0015] In some preferred embodiments, there are two retaining springs and they are arranged axially along the valve seat body.
[0016] In some preferred embodiments, the upper flexible member and the lower flexible member are made of rubber. The rubber material can be selected according to the overall design requirements of the valve to meet the use conditions and service life requirements.
[0017] The beneficial effects of the present invention are as follows: when the variable diameter automatic compensating sealing valve seat of the present invention is in use, at least two bases are arranged around the valve seat body to form an annular structure, and the first limiting shaft shoulder and the first limiting groove are axially arranged between the two adjacent bases, and the valve seat body is always kept in an annular structure by the pre-tightening mechanism. The cooperation of the elastic connecting piece between the two adjacent bases enables the sealing valve seat to have a certain radial deformation, and the valve seat body also plays a sealing and supporting role. This structure can automatically compensate for the machining error, assembly error and wear gap between the ball core and the valve seat during use. The invention relates to a valve having a fixed diameter and a ball core. ... BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments.
[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;
[0020] Figure 2 It is the front view in the present invention;
[0021] Figure 3 It is a left side view in the present invention;
[0022] Figure 4 It is a right side view in the present invention;
[0023] Figure 5 yes Figure 2 Middle AA section view;
[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the matrix in the present invention;
[0025] Figure 7 is A front view of the substrate in the present invention;
[0026] Figure 8 It is a state diagram of the present invention when in use.
[0027] In the figure: 1. valve seat body, 2. base, 3. upper connecting part, 4. lower connecting part, 5. first protruding part, 6. first groove part, 7. second groove part, 8. second protruding part, 9. upper flexible part, 10. lower flexible part, 11. third groove part, 12. third protruding part, 13. fourth protruding part, 14. fourth groove part, 15. retaining spring, 16. retaining groove, 17. surface contact. DETAILED DESCRIPTION
[0028] The present invention is further described in detail below in conjunction with embodiments:
[0029] The present invention is not limited to the following specific embodiments. A person skilled in the art can implement the present invention in various other specific embodiments according to the contents disclosed in the present invention, or any simple changes or modifications made to the design structure and ideas of the present invention fall within the protection scope of the present invention. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.
[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are 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 therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.
[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.
[0032] like Figure 1-8As shown, a variable diameter automatic compensation sealing valve seat includes a valve seat body 1 with an annular structure. In this embodiment, the valve seat body 1 includes four bases 2, and the bases 2 are of an arc-shaped structure. Of course, in addition to four bases 2, there can also be two, three, five or more bases. The four bases 2 are sequentially connected end to end and enclose the valve seat body 1. Each base 2 has an upper connecting portion 3 and a lower connecting portion 4 arranged in sequence along the axial direction of the valve seat body 1. The upper connecting portion 3 is provided with a first protrusion 5 at one end along the circumference of the valve seat body 1, and a first groove portion 6 is provided at the other end of the upper connecting portion 3 along the circumference of the valve seat body 1. The lower connecting portion 4 is provided with a second groove portion 7 at one end along the circumference of the valve seat body 1, and the lower connecting portion 4 is provided with a second groove portion 7 at the other end along the circumference of the valve seat body 1. A second protrusion 8 is provided at one end, a first protrusion 5 at one end of the upper connection part 3 of the rear substrate 2 of the two adjacent substrates 2 is arranged in a first groove 6 at the other end of the upper connection part 3 of the front substrate 2, an upper flexible member 9 with elastic deformation ability is provided between the first protrusion 5 at one end of the upper connection part 3 of the rear substrate 2 of the two adjacent substrates 2 and the first groove 6 at the other end of the upper connection part 3 of the front substrate 2, a second groove 7 at one end of the lower connection part 4 of the rear substrate 2 of the two adjacent substrates 2 is arranged on the second protrusion 8 at the other end of the lower connection part 4 of the front substrate 2, and the second groove 7 at one end of the lower connection part 4 of the rear substrate 2 of the two adjacent substrates 2 is arranged on the second protrusion 8 at the other end of the lower connection part 4 of the front substrate 2. A lower flexible member 10 with elastic deformation capability is arranged between the second protrusion 8 at the other end of the upper connection portion 3 of a substrate 2, and a first protrusion 5 located at one end of the upper connection portion 3 of the two adjacent substrates 2 is in surface contact 17 with a second groove 7 located at one end of the lower connection portion 4 of the two adjacent substrates 2. A pre-tightening mechanism is arranged on the valve seat body 1, and the pre-tightening mechanism is used to keep the valve seat body 1 in an annular structure. When radial diameter variation compensation is performed on the valve seat body 1, on the one hand, the elastic deformation of the upper flexible member 9 and the lower flexible member 10 causes the substrate 2 to move radially along the valve seat body 1, thereby realizing automatic compensation between the valve core and the valve seat, and cooperating with the pre-tightening mechanism to limit the radial displacement of the substrate 2 within a certain range. , and always ensure that the valve seat and the valve core are sealed with each other when in contact. In this embodiment, the material of the base 2 is metal, and the end face of the first protrusion 5 close to the second protrusion 8 in the axial direction of the valve seat body 1 is the first matching surface 5a, and the end face of the second protrusion 8 close to the first protrusion 5 in the axial direction of the valve seat body 1 is the second matching surface 8a. The first matching surface 5a and the second matching surface 8a between the two adjacent bases 2 are in contact with each other, that is, the surface contact 17 between the two adjacent bases 2 is the contact between metal surfaces and metal surfaces. When the valve is installed, due to the pre-tightening force of the valve seat body 1, there is no gap between the valve core and the valve seat body 1, the axial strength is guaranteed, and the design requirements of variable diameter can be achieved at the same time.
[0033] A third groove portion 11 is provided on the first protrusion 5 at one end of the upper connection portion 3 along the radial direction of the valve seat body 1, and a third protrusion 12 is provided on the first groove portion 6 at the other end of the upper connection portion 3 along the radial direction of the valve seat body 1. The third groove portion 11 matches the third protrusion 12. The third groove portion 11 on the first protrusion 5 at one end of the upper connection portion 3 of the two adjacent substrates 2 is provided on the third protrusion 12 on the first groove portion 6 at the other end of the upper connection portion 3 of the previous substrate 2. A fourth protrusion 13 is provided on the second groove portion 7 at one end of the lower connection portion 4 along the radial direction of the valve seat body 1, and a The fourth groove portion 14 and the fourth protrusion 13 match the fourth groove portion 14. The fourth protrusion 13 on the second groove portion 7 at one end of the lower connecting portion 4 of the rear substrate 2 of the two adjacent substrates 2 is arranged on the fourth groove portion 14 on the second protrusion 8 at the other end of the lower connecting portion 4 of the front substrate 2. The third groove portion 11 at one end of the upper connecting portion 3 on the substrate 2 and the fourth protrusion 13 at one end of the lower connecting portion 4 are staggered with each other. The third protrusion 12 at the other end of the upper connecting portion 3 on the substrate 2 and the fourth groove portion 14 at the other end of the lower connecting portion 4 are staggered with each other. This structure can limit the range of radial compensation of the valve seat body 1 and ensure the overall strength and sealing of the valve seat body 1.
[0034] Therefore, by observing the outer circumferential surface of the valve seat body 1, it can be found that the connection between the two adjacent substrates 2 is a mirror image Z shape, and the surface contact 17 between the two adjacent substrates 2 is mainly to prevent the valve seat body 1 from axial movement, and the upper flexible part 9 is located above the surface contact 17, and the lower flexible part 10 is located below the surface contact 17. The upper flexible part 9 and the lower flexible part 10 are staggered from each other. Furthermore, by observing from the axial end perspectives of the valve seat body 1, it can be found that the upper flexible part 9 and the lower flexible part 10 are symmetrical Z shapes, and the upper flexible part 9 and the lower flexible part 10 provide the valve seat body 1 with a certain amount of deformation in the circumferential direction, thereby realizing the radial automatic compensation function, and also acting as a soft seal to ensure the sealing of the valve seat body 1.
[0035] The pre-tightening mechanism includes a clamping spring 15, and a clamping groove 16 matching the clamping spring 15 is arranged on the outer peripheral surface of the valve seat body 1. The clamping spring 15 is arranged in the clamping groove 16. The cross section of the clamping groove 16 is a trapezoid. The lower bottom edge and the upper bottom edge of the trapezoid are arranged from the outside to the inside along the radial direction of the valve seat body 1. There are two clamping springs 15 and they are arranged axially along the valve seat body 1. The use of the clamping spring 15 can increase the overall strength of the valve seat body 1 and prevent the rubber from being damaged when the radial force is too large, resulting in failure of the parts.
[0036] In this embodiment, the upper flexible member 9 and the lower flexible member 10 are both made of rubber. The rubber is bonded between two adjacent substrates 2. In addition to rubber, polyurethane and silicone can also be used.
[0037] During use, when the valve is assembled, the valve seat body 1 contacts the valve core, and the retaining spring 15 provides a pre-tightening force for the valve seat body 1. In the later use of the valve, when the gap increases due to wear, the pre-tightening force provided by the retaining spring 15 cooperates with the deformation of the upper flexible part 9 and the lower flexible part 10, so that the gap between the valve seat and the valve core is always maintained within a certain range, so that the valve seat body 1 automatically changes radially, realizing the variable diameter automatic compensation sealing function.
[0038] The above-mentioned ideal embodiments of the present invention are for inspiration. Through the above-mentioned description, relevant staff can make various changes and modifications without departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.
Claims
1. A variable diameter automatic compensating sealing valve seat, characterized in that: A valve seat body (1) having an annular structure, wherein the valve seat body (1) comprises at least two base bodies (2) having an arc-shaped structure, wherein the base bodies (2) are sequentially connected end to end and enclose the valve seat body (1), and each of the base bodies (2) has an upper connecting portion (3) and a lower connecting portion (4) sequentially arranged along the axial direction of the valve seat body (1); The upper connecting portion (3) is provided with a first protruding portion (5) at one end along the circumference of the valve seat body (1), and a first recessed portion (6) at the other end; the lower connecting portion (4) is provided with a second recessed portion (7) at one end along the circumference of the valve seat body (1), and a second protruding portion (8) at the other end; The first protruding portion (5) of the upper connecting portion (3) of one of the two adjacent base bodies (2) is arranged in the first recessed portion (6) of the upper connecting portion (3) of the other, and an upper flexible member (9) capable of elastic deformation is arranged between the first protruding portion (5) of one of the two adjacent base bodies (2) and the first recessed portion (6) of the other; The second groove portion (7) located at one end of the lower connection portion (4) of the rear substrate (2) of the two adjacent substrates (2) is arranged on the second protrusion portion (8) located at the other end of the lower connection portion (4) of the front substrate (2), and a lower flexible member (10) with elastic deformation capability is arranged between the second groove portion (7) located at one end of the lower connection portion (4) of the rear substrate (2) of the two adjacent substrates (2) and the second protrusion portion (8) located at the other end of the upper connection portion (3) of the front substrate (2); An end surface of the first protrusion (5) close to the second protrusion (8) in the axial direction of the valve seat body (1) is a first matching surface (5a), and an end surface of the second protrusion (8) close to the first protrusion (5) in the axial direction of the valve seat body (1) is a second matching surface (8a); The first mating surface (5a) and the second mating surface (8a) between two adjacent substrates (2) are in contact with each other; The valve seat body (1) is provided with a pre-tightening mechanism for maintaining the valve seat body (1) in an annular structure.
2. The variable diameter automatic compensating sealing valve seat according to claim 1, characterized in that: A third groove portion (11) is provided on the first protrusion portion (5) at one end of the upper connecting portion (3) radially along the valve seat body (1), and a third protrusion portion (12) is provided on the first groove portion (6) at the other end of the upper connecting portion (3) radially along the valve seat body (1), the third groove portion (11) matches the third protrusion portion (12), and the third groove portion (11) on the first protrusion portion (5) at one end of the upper connecting portion (3) of the latter of the two adjacent base bodies (2) is provided on the third protrusion portion (12) on the first groove portion (6) at the other end of the upper connecting portion (3) of the former base body (2).
3. The variable diameter automatic compensating sealing valve seat according to claim 2, characterized in that: A fourth protrusion (13) is provided on the second groove (7) at one end of the lower connecting portion (4) along the radial direction of the valve seat body (1), and a fourth protrusion (14) is provided on the second groove (8) at the other end of the lower connecting portion (4) along the radial direction of the valve seat body (1), the fourth protrusion (13) matches the fourth protrusion (14), and the fourth protrusion (13) on the second groove (7) at one end of the lower connecting portion (4) of the latter of the two adjacent base bodies (2) is located. The upper connecting portion (3) of the substrate (2) is provided on a fourth groove portion (14) on a second protruding portion (8) at the other end of the lower connecting portion (4) of the previous substrate (2); the third groove portion (11) at one end of the upper connecting portion (3) of the substrate (2) and the fourth protruding portion (13) at one end of the lower connecting portion (4) are staggered with each other; the third protruding portion (12) at the other end of the upper connecting portion (3) of the substrate (2) and the fourth groove portion (14) at the other end of the lower connecting portion (4) are staggered with each other.
4. The variable diameter automatic compensating sealing valve seat according to claim 1, characterized in that: The pre-tightening mechanism comprises a clamping spring (15); a clamping groove (16) matching the clamping spring (15) is arranged on the outer peripheral surface of the valve seat body (1); and the clamping spring (15) is arranged in the clamping groove (16).
5. The variable diameter automatic compensating sealing valve seat according to claim 4, characterized in that: The cross section of the clamping groove (16) is a trapezoid, and the lower base and the upper base of the trapezoid are arranged from the outside to the inside along the radial direction of the valve seat body (1).
6. A variable diameter automatic compensating sealing valve seat according to claim 4 or 5, characterized in that: There are two clamping springs (15) which are arranged axially along the valve seat body (1).
7. The variable diameter automatic compensating sealing valve seat according to claim 1, characterized in that: The upper flexible member (9) and the lower flexible member (10) are made of rubber.