Control valve with high sealing performance
By employing a rectangular sliding groove and a movable plate structure in the control valve, combined with a sealing plate assembly and a guide rod, dual sealing under high pressure is achieved, solving the leakage problem of traditional control valves and reducing manufacturing difficulty.
Patent Information
- Application Number
- CN202520187946.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-07
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-02-07
AI Technical Summary
Traditional control valves are prone to leakage in high-pressure environments, which increases the difficulty of manufacturing them.
The structure employs a rectangular sliding groove and a movable plate, combined with a sealing plate assembly and a guide rod. Fluid pressure drives the sealing plate assembly to make tight contact with the inner wall of the sliding groove, achieving double sealing.
Maintaining good sealing performance in high-pressure environments reduces the requirements for the machining and assembly precision of control valve parts, thus reducing manufacturing difficulty.
Smart Images
Figure CN223825646U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to control valve technical field, especially a control valve that strong sealing. BACKGROUND
[0002] Control valve plays a vital role in the industrial production process, and is widely used in petroleum, chemical industry, electric power, metallurgy and many other fields, and is used for controlling the flow, pressure and direction of fluid and other parameters. With the continuous development of industrial technology, the performance requirements of control valve are increasingly improved.
[0003] For the related technology in the above, the inventor finds that the traditional control valve sealing structure often adopts simple rubber sealing gasket or sealing ring, when the control valve is used in high pressure environment for a long time, and the pressure of fluid is high, fluid is easy to flow out from the tiny gap to cause leakage, therefore, the machining precision and assembly precision of control valve parts have higher requirements, which increases the manufacturing difficulty of control valve. UTILITY MODEL CONTENT
[0004] The utility model mainly solves the technical problem that provides a control valve that strong sealing solves the problem that the manufacturing difficulty is big.
[0005] In order to solve the above technical problem, one of the technical schemes adopted by the utility model is to provide a control valve that strong sealing, comprising: valve body and the circular liquid flow channel arranged in the valve body, the valve body is also provided with the rectangular sliding groove perpendicular to the circular liquid flow channel, the width of the rectangular sliding groove is greater than the diameter of the circular liquid flow channel and is connected, the moving plate is slidably connected in the rectangular sliding groove, the moving plate is provided with the circular through hole, one side of the moving plate is provided with the circular blind hole one below the circular through hole, the other side is provided with the circular blind hole two concentric with the circular blind hole one, the pressure bearing plate is arranged in the circular blind hole one, the sealing plate assembly for plugging the circular liquid flow channel is arranged in the circular blind hole two, the end of the circular blind hole one cavity is provided with a plurality of circular through holes in annular array, the guide rod is slidably connected in the circular through hole, one end of the guide rod is connected with the pressure bearing plate, the other end is connected with the sealing plate assembly.
[0006] The valve body is connected with the sealing mounting seat assembly one covering one end of the rectangular sliding groove, the sealing mounting seat assembly one is connected with the telescopic rod for driving the moving plate to slide, the valve body is also connected with the sealing mounting seat assembly two covering the other end of the rectangular sliding groove.
[0007] By adopting the technical scheme, the control valve is installed in the pipeline, when it is needed to open the control valve to make the pipeline unobstructed, the telescopic rod is operated to drive the moving plate to slide downwards along the rectangular sliding groove by a certain distance, the circular through hole on the moving plate is communicated with the circular liquid flow channel, and fluid can flow through the circular liquid flow channel, namely, the pipeline is in an unobstructed state; when it is needed to close the control valve to make the pipeline disconnected, the telescopic rod is operated to drive the moving plate to slide upwards along the rectangular sliding groove by a certain distance, the sealing plate assembly corresponds to the circular liquid flow channel, at this moment, the moving plate performs primary sealing on the circular liquid flow channel, because the fluid has a large pressure, the fluid acts on the pressure bearing plate to generate a large thrust, the pressure bearing plate drives the sealing plate assembly to tightly contact the inner wall of the rectangular sliding groove through the guide rod, the sealing plate assembly performs secondary sealing on the circular liquid flow channel, namely, the greater the pressure of the fluid is, the better the sealing effect of the sealing plate assembly on the circular liquid flow channel is, even if the control valve is used in a high-pressure environment, there is no special requirement on the machining precision and assembly precision of the control valve parts, and the difficulty of manufacturing the control valve is reduced.
[0008] In a preferred example, the length of the guide rod is greater than the distance between the first circular blind hole and the second circular blind hole.
[0009] By adopting the technical scheme, when the pressure bearing plate is extruded by the fluid, the pressure bearing plate can drive the sealing plate assembly to move through the guide rod, so that the sealing plate assembly is tightly connected with the inner wall of the rectangular sliding groove, and the sealing property is enhanced.
[0010] In a preferred example, the sealing plate assembly comprises a circular plate and a first wear-resistant sealing ring, the side, away from the guide rod, of the circular plate is provided with a first annular groove, the first wear-resistant sealing ring is connected in the first annular groove, and the inner diameter of the first wear-resistant sealing ring is greater than the hole diameter of the circular liquid flow channel.
[0011] By adopting the technical scheme, when the moving plate drives the first wear-resistant sealing ring on the sealing plate assembly to move by a certain distance, the first wear-resistant sealing ring is located outside the circular liquid flow channel, and the first wear-resistant sealing ring is tightly connected with the inner wall of the rectangular sliding groove, so that the fluid is prevented from flowing out through the circular liquid flow channel.
[0012] The utility model discloses a further configuration in a preferable example can be: the sealed mounting seat subassembly one includes the circular mounting seat, the concentricly equipped with the let -by cavity and transition hole on the circular mounting seat, let -by cavity with transition hole intercommunication, the rectangular slide slot is located in the projection of let -by cavity, the concentricly equipped with the second annular groove on the lower end surface of circular mounting seat, be connected with the sealing ring no. 1 in the second annular groove, the circular mounting seat is equipped with a plurality of bolts of annular array wear, the end spiral of bolt wears is equipped in valve body, be equipped with the third annular groove in transition hole, be equipped with the second wear -resistant sealing ring in the third annular groove, the second wear -resistant sealing ring is set up on the extension rod of telescopic link and both are slidingly connected.
[0013] By adopting the above technical scheme, when the control valve is used in a high-pressure fluid environment, fluid will flow from the tiny gap between the moving plate and the inner wall of the rectangular slide groove into the let -by cavity, and through the joint action of the sealing ring no. 1 and the second wear -resistant sealing ring, the fluid is prevented from flowing into the external environment, thereby achieving the sealing effect.
[0014] The utility model discloses a further configuration in a preferable example can be: the sealed mounting seat subassembly two includes the circular seat, be equipped with the fourth annular groove on the circular seat, be equipped with the sealing ring no. 2 in the fourth annular groove, the circular seat is equipped with a plurality of bolts of annular array wear, the end spiral of bolt wears is equipped in valve body.
[0015] By adopting the above technical scheme, when the control valve is used in a high-pressure fluid environment, fluid will flow from the tiny gap between the moving plate and the inner wall of the rectangular slide groove, and through the tight connection of the sealing ring no. 2 with the circular seat and the valve body, the sealing ring no. 2 plays a sealing role, preventing the fluid from flowing into the external environment.
[0016] The utility model discloses a further configuration in a preferable example can be: one side of the valve body is connected with the liquid inlet connecting pipe that communicates with the circular liquid flow channel, and the other side is connected with the liquid outlet connecting pipe that communicates with the circular liquid flow channel.
[0017] By adopting the above technical scheme, through the use of the liquid inlet connecting pipe and the liquid outlet connecting pipe, the control valve of the application can be conveniently installed in the pipeline, improving the operational convenience.
[0018] The utility model discloses a further configuration in a preferable example can be: the telescopic link includes electric push rod and round rod body, one end of the round rod body is connected with the extension rod end of electric push rod, and the other end is spiral and is equipped in the moving plate.
[0019] By adopting the above technical scheme, the telescopic rod of the electric push rod performs the action of extension and contraction, thereby driving the moving plate to slide in the rectangular slide groove through the round rod body.
[0020] In summary, the utility model has at least one of the following beneficial technical effects:
[0021] When it is needed to close the control valve to disconnect the pipeline, the telescopic rod is operated to drive the moving plate to slide upwards along the rectangular sliding groove for a distance, at which time the moving plate performs primary blocking on the circular liquid flow channel, due to the large pressure of the fluid, the fluid acts on the pressure-bearing plate to generate a large thrust, the pressure-bearing plate drives the sealing plate assembly to tightly contact with the inner wall of the rectangular sliding groove through the guide rod, the sealing plate assembly performs secondary blocking on the circular liquid flow channel, that is, the greater the pressure of the fluid, the better the blocking effect of the sealing plate assembly on the circular liquid flow channel, even if the control valve of the application is used in a high-pressure environment, there is no special requirement for the machining precision and assembly precision of the control valve parts, and the difficulty of manufacturing the control valve is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor, wherein:
[0023] Figure 1 is a structural schematic view of a preferred embodiment of the control valve with strong sealing of the present application.
[0024] Figure 2 is Figure 1 the A-A line section view in the figure.
[0025] Figure 3 is Figure 2 the structural schematic view of the connection of the moving plate, the pressure-bearing plate, the guide rod and the sealing plate assembly in the figure.
[0026] Figure 4 is Figure 2 another structural schematic view of the connection of the moving plate, the pressure-bearing plate, the guide rod and the sealing plate assembly in the figure.
[0027] In the figure: 1, valve body; 2, circular liquid flow channel; 3, rectangular sliding groove; 4, moving plate; 5, circular through hole; 60, sealing plate assembly; 70, sealing mounting seat assembly one; 80, telescopic rod; 90, sealing mounting seat assembly two;
[0028] 11, circular blind hole one; 12, circular blind hole two; 13, pressure-bearing plate; 14, circular through hole; 15, guide rod; 16, liquid inlet connecting pipe; 17, liquid outlet connecting pipe;
[0029] 61, circular plate; 62, first wear-resistant sealing ring; 63, first annular groove;
[0030] 71, circular mounting seat; 72, let place cavity; 73, transition hole; 74, second annular groove; 75, sealing ring one; 76, third annular groove; 77, second wear-resistant sealing ring;
[0031] 81, electric push rod; 82, round rod body;
[0032] 91, circular seat; 92, fourth annular groove; 93, sealing ring two. DETAILED DESCRIPTION
[0033] The preferred embodiments of the utility model are described below in combination with the drawings, and it should be understood that the preferred embodiments described herein are only used to illustrate and explain the utility model, and are not used to limit the utility model.
[0034] It should be noted that these drawings are all simplified schematic diagrams, and only illustrate the basic structure of the utility model in a schematic manner, so they only show the structure related to the utility model.
[0035] REFERENCE Figures 1 to 4 The utility model discloses a control valve that strong sealing, include: valve body 1 and set in valve body 1 circular liquid flow channel 2, valve body 1 still is equipped with the rectangular sliding groove 3 that is perpendicular to circular liquid flow channel 2, the width of rectangular sliding groove 3 is greater than the diameter of circular liquid flow channel 2 and is connected, and the moving plate 4 is slidably connected in rectangular sliding groove 3, be equipped with circular through -hole 5 on moving plate 4, one side of moving plate 4 is equipped with the circular blind hole one 11 that is located circular through -hole 5 below, the other side is equipped with the circular blind hole two 12 that is concentric with circular blind hole one 11, be equipped with pressure plate 13 in circular blind hole one 11, be equipped with sealing plate assembly 60 for plugging circular liquid flow channel 2 in circular blind hole two 12, the end annular array of circular blind hole one 11 cavity is equipped with a plurality of circular through -hole 14, circular through -hole 14 is slidably connected with guide rod 15 respectively, one end of guide rod 15 is connected with pressure plate 13, and the other end is connected with sealing plate assembly 60;The length of guide rod 15 is greater than the distance between circular blind hole one 11 and circular blind hole two 12;When pressure plate 13 is extruded by fluid, pressure plate 13 can drive sealing plate assembly 60 to move by guide rod 15, so that sealing plate assembly 60 and the inner wall of rectangular sliding groove 3 are closely connected, and the sealing property is enhanced.
[0036] The sealing plate assembly 60 comprises a circular plate 61 and a first wear-resistant sealing ring 62, the circular plate 61 is provided with a first annular groove 63 on the side away from the guide rod 15, the first wear-resistant sealing ring 62 is connected in the first annular groove 63, and the inner diameter of the first wear-resistant sealing ring 62 is greater than the hole diameter of the circular liquid flow channel 2; when the first wear-resistant sealing ring 62 on the sealing plate assembly 60 is moved by the moving plate 4 for a certain distance, the first wear-resistant sealing ring 62 is located outside the circular liquid flow channel 2, and the first wear-resistant sealing ring 62 is tightly connected with the inner wall of the rectangular sliding groove 3, so that the fluid is prevented from flowing out through the circular liquid flow channel 2.
[0037] The valve body 1 is connected with a sealing mounting seat assembly one 70 covering one end of the rectangular sliding groove 3, the sealing mounting seat assembly one 70 is connected with an extension rod 80 for driving the moving plate 4 to slide, and the valve body 1 is further connected with a sealing mounting seat assembly two 90 covering the other end of the rectangular sliding groove 3.
[0038] The sealing mounting seat assembly one 70 comprises a circular mounting seat 71, the circular mounting seat 71 is provided with a displacement cavity 72 and a transition hole 73 in a concentric mode, the displacement cavity 72 is in communication with the transition hole 73, the rectangular sliding groove 3 is located in the projection of the displacement cavity 72, the lower end surface of the circular mounting seat 71 is provided with a second annular groove 74 in a concentric mode, the sealing ring one 75 is connected in the second annular groove 74, a plurality of bolts are arranged in the circular mounting seat 71 in an annular array mode, the end portions of the bolts are screw-connected on the valve body 1, the transition hole 73 is provided with a third annular groove 76, the second wear-resistant sealing ring 77 is arranged in the third annular groove 76, the second wear-resistant sealing ring 77 is sleeved on the extension rod of the extension rod 80 and is in sliding connection with the extension rod; when the control valve is used in a high-pressure fluid environment, the fluid can flow into the displacement cavity 72 from the tiny gap between the moving plate 4 and the inner wall of the rectangular sliding groove 3, the fluid is prevented from flowing into the external environment through the cooperation of the sealing ring one 75 and the second wear-resistant sealing ring 77, and the sealing effect is achieved.
[0039] The sealing mounting seat assembly two 90 comprises a circular seat 91, the circular seat 91 is provided with a fourth annular groove 92, the fourth annular groove 92 is provided with a sealing ring two 93, a plurality of bolts are arranged in the circular seat 91 in an annular array mode, and the end portions of the bolts are screw-connected on the valve body 1; when the control valve is used in a high-pressure fluid environment, the fluid can flow from the tiny gap between the moving plate 4 and the inner wall of the rectangular sliding groove 3, the sealing ring two 93 is tightly connected with the circular seat 91 and the valve body 1 respectively, the sealing ring two 93 plays a sealing role, and the fluid is prevented from flowing into the external environment.
[0040] One side of the valve body 1 is connected with a liquid inlet connecting pipe 16 in communication with the circular liquid flow channel 2, and the other side is connected with a liquid outlet connecting pipe 17 in communication with the circular liquid flow channel 2; through the use of the liquid inlet connecting pipe 16 and the liquid outlet connecting pipe 17, the control valve of the application is conveniently installed in a pipeline, and the operation convenience is improved.
[0041] The telescopic rod 80 comprises an electric push rod 81 and a round rod body 82, one end of the round rod body 82 is connected with the extending rod end of the electric push rod 81, and the other end is screwed into the moving plate 4; the telescopic rod of the electric push rod 81 extends and retracts, thereby driving the moving plate 4 to slide in the rectangular sliding groove 3 through the round rod body 82.
[0042] The implementation principle of the embodiment is as follows: the control valve is installed in the pipeline, when it is needed to open the control valve to make the pipeline unobstructed, the telescopic rod 80 is operated to drive the moving plate 4 to slide downwards along the rectangular sliding groove 3 by a certain distance, the circular through hole 5 on the moving plate 4 is communicated with the circular liquid flow channel 2, and the fluid can flow through the circular liquid flow channel 2, that is, the pipeline is in an unobstructed state; when it is needed to close the control valve to disconnect the pipeline, the telescopic rod 80 is operated to drive the moving plate 4 to slide upwards along the rectangular sliding groove 3 by a certain distance, the sealing plate assembly 60 corresponds to the circular liquid flow channel 2, at this time, the moving plate 4 seals the circular liquid flow channel 2 once, because the fluid has a large pressure, the fluid acts on the pressure bearing plate 13 to generate a large thrust, the pressure bearing plate 13 drives the sealing plate assembly 60 to tightly contact the inner wall of the rectangular sliding groove 3 through the guide rod 15, and the sealing plate assembly 60 seals the circular liquid flow channel 2 twice, that is, the greater the pressure of the fluid, the better the sealing effect of the sealing plate assembly 60 on the circular liquid flow channel 2, even if the control valve is used in a high-pressure environment, there is no special requirement for the machining precision and assembly precision of the parts of the control valve, and the difficulty of manufacturing the control valve is reduced.
[0043] The above only describes the embodiments of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process transformation according to the content of the utility model specification, or direct or indirect application in other related technical fields, are all included in the patent protection range of the utility model.
Claims
1. A control valve having a strong seal, characterized by comprising: 1) a valve body having a valve hole and a valve seat, The utility model relates to a valve body (1) and the circular liquid flow channel (2) of setting in valve body (1), still be equipped with the rectangular sliding groove (3) perpendicular to circular liquid flow channel (2) in valve body (1), the width of rectangular sliding groove (3) is greater than the diameter of circular liquid flow channel (2) and is connected, the mobile board (4) of sliding connection is equipped in rectangular sliding groove (3), be equipped with the circular through -hole (5) on mobile board (4), one side of mobile board (4) is equipped with the circular blind hole one (11) below circular through -hole (5), the other side is equipped with the circular blind hole two (12) with circular blind hole one (11) concentric, be equipped with the pressure plate (13) in circular blind hole one (11), be equipped with the sealing plate subassembly (60) for plugging circular liquid flow channel (2) in circular blind hole two (12), the end annular array of circular blind hole one (11) inner chamber is equipped with a plurality of circular through -hole (14), the circular through -hole (14) is respectively slidingly connected with the guide rod (15), one end of guide rod (15) is connected with pressure plate (13), the other end is connected with sealing plate subassembly (60). The valve body (1) is connected with the sealing mounting seat assembly one (70) covering one end of rectangular sliding groove (3), the sealing mounting seat assembly one (70) is connected with the telescopic rod piece (80) of driving mobile board (4) to slide, the valve body (1) is also connected with the sealing mounting seat assembly two (90) covering the other end of rectangular sliding groove (3). The length of the guide rod (15) is greater than the distance between the circular blind hole one (11) and the circular blind hole two (12).
2. The control valve having high tightness according to claim 1, wherein The sealing plate subassembly (60) includes a circular plate (61) and a first wear-resistant sealing ring (62), the first ring groove (63) is provided on the side of the circular plate (61) away from the guide rod (15), the first wear-resistant sealing ring (62) is connected in the first ring groove (63), and the inner diameter of the first wear-resistant sealing ring (62) is greater than the hole diameter of the circular liquid flow channel (2).
3. The strong seal control valve of claim 1, wherein, The sealing mounting seat assembly one (70) includes a circular mounting seat (71), a displacement cavity (72), and a transition hole (73) are concentrically arranged on the circular mounting seat (71), the displacement cavity (72) is in communication with the transition hole (73), the rectangular sliding groove (3) is located in the projection of the displacement cavity (72), a second ring groove (74) is concentrically arranged on the lower end surface of the circular mounting seat (71), a sealing ring one (75) is connected in the second ring groove (74), a plurality of bolts are annularly arranged on the circular mounting seat (71), the end of the bolt is screwed into the valve body (1), a third ring groove (76) is arranged in the transition hole (73), a second wear-resistant sealing ring (77) is arranged in the third ring groove (76), the second wear-resistant sealing ring (77) is sleeved on the extension rod of the telescopic rod piece (80) and is in sliding connection with the extension rod.
4. The strong seal control valve of claim 1, wherein, 5. The strong seal control valve of claim 1, wherein, The sealing mounting base assembly two (90) comprises a circular seat (91), a fourth annular groove (92) is arranged on the circular seat (91), a sealing ring two (93) is arranged in the fourth annular groove (92), a plurality of bolts are arranged in an annular array on the circular seat (91), and end portions of the bolts are screw-connected on the valve body (1).
6. The strong seal control valve of claim 1, wherein, One side of the valve body (1) is connected with a liquid inlet connecting pipe (16) in communication with the circular liquid flow channel (2), and the other side is connected with a liquid outlet connecting pipe (17) in communication with the circular liquid flow channel (2).
7. The strong containment control valve of claim 1, wherein, The telescopic rod (80) comprises an electric push rod (81) and a circular rod body (82), one end of the circular rod body (82) is connected with an extending rod end of the electric push rod (81), and the other end is screw-connected on the moving plate (4).