Sealing valve
By designing a gas pressure-controlled sealing valve, the combination of movable seat, slide valve and compression spring, the existing sealing valve is solved with the high cost and time-consuming and labor-intensive problems of existing sealing valves, and the low-pressure control of high-pressure gas conduction and automated operation are achieved, reducing the number of operations of low-pressure gases. and labor costs.
Patent Information
- Application Number
- CN202420915834.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-29
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-04-29
AI Technical Summary
The existing sealing valves are costly and have strict environmental requirements when controlling flammable gas flow media. Manual control requires manual operation, which is time-consuming and labor-intensive, resulting in increased labor costs.
A sealing valve including a valve assembly and a valve core assembly is designed. Through the cooperation of the movable seat, the slide valve and the compression spring, the conduction of the pneumatic pressure control valve is achieved and manual intervention is reduced.
Low-pressure control of high-pressure gas conduction is achieved, cost reduction, and automated operation is achieved through long-distance air pressure control, avoiding the limitations of the use of electric sealing valves.
Smart Images
Figure CN222458421U_ABST
Abstract
Description
Technical Field
[0001] The utility model specifically relates to a sealing valve. Background Art
[0002] As an actuator, the sealing valve is mainly used to control the flow of fluid media. The existing sealing valve mainly includes a valve body and a valve core. The valve core can be controlled by electric control or manual control. The cost of electric control sealing valves is relatively high and the use environment requirements are strict, especially when used to control flammable gas media. Although manual control is suitable for various environments, it requires manual operation, which is time-consuming and labor-intensive, resulting in increased labor costs. Figure 1 As shown, when the sealing valve needs to be controlled to open, manual pressure is required to drive the valve core to move downward to open the channel. In order to solve the above problems, the utility model proposes a new type of sealing valve. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide a sealing valve which has a simple structure, is easy to use, does not require manual operation and can be controlled at a low pressure.
[0004] In order to solve the above technical problems, the utility model is solved through the following technical solutions: a sealing valve, including a valve assembly and a valve core assembly, the valve assembly includes a valve body and a valve cover, the valve cover is sealed with the valve body, the valve cover is provided with a movable cavity, the valve core assembly includes a movable seat and a sliding valve, the movable seat is vertically movably arranged in the movable cavity, and the peripheral side of the movable seat is sealed with the valve cover, the movable seat is provided with a first air channel running through the upper and lower side surfaces, a pressure gap is provided between the upper side surface of the movable seat and the sealing cover, the sliding valve is provided with a second air channel, and the valve body is provided with a mounting for assembling the sliding valve. The valve body is provided with an air inlet channel connected to the installation chamber, an air outlet channel connected to the active chamber, and a control channel connected to the second air channel. The valve body is also provided with a sealing port for connecting the installation chamber and the active chamber. The upper end of the sliding valve is extended into the first air channel and is sealed and fixedly matched with the movable seat. The first air channel is connected to the second air channel. The lower end of the sliding valve is sealed and matched with the inner wall of the installation chamber. The sliding valve is also provided with a sealing ring for blocking the sealing port. A compression spring is also provided at the bottom of the installation chamber. The compression spring is used to lift the sliding valve so that the sealing ring closes the sealing port.
[0005] Preferably, a hollow valve seat is embedded in the sealing port, and the valve seat is sealed with the valve body, the valve seat is provided with a retaining ring, and the retaining ring is provided with an exhaust port, the sliding valve is movably arranged in the valve seat, and the sealing ring can movably seal the exhaust port, the valve seat is provided with an auxiliary cover located above the exhaust port, the auxiliary cover is provided with a movable hole, the upper end of the sliding valve movably passes through the movable hole, and the peripheral side of the auxiliary cover is provided with a plurality of through holes along its radial direction, and the through holes are connected with the movable cavity; the advantage is that the reliability of the conduction between the installation cavity and the movable cavity controlled by the sliding valve can be guaranteed by the arranged valve seat, thereby reliably controlling the conduction between the air inlet channel and the air outlet channel; at the same time, the cooperation of the arranged auxiliary cover and the through hole can make the airflow in the installation cavity enter the movable cavity along the radial direction of the valve seat, so as to avoid the airflow vertically rushing into the movable cavity to impact the movable seat and affect the stability of the conduction.
[0006] Furthermore, the auxiliary cover extends upward into the movable cavity, the lower end of the valve seat is provided with a limiting edge, and the valve body is provided with a fixing platform that cooperates with the limiting edge; the advantage is that the stability of the valve seat can be ensured by the cooperation between the limiting edge and the fixing platform, and the auxiliary cover can limit the moving stroke of the movable seat.
[0007] Furthermore, the sliding valve includes a valve core body and a push rod which are coaxially fixed, the valve core body is provided with a first air guide hole, the push rod is provided with a second air guide hole, the first air guide hole and the second air guide hole are connected to form a second air channel, the sealing ring is arranged at the upper end of the valve core body, the upper end of the valve core body is movably arranged in the valve seat, and the upper end of the push rod passes through the movable hole and is fixed to the movable seat; the advantage is that the production and processing requirements of the sliding valve can be reduced by cooperating with the valve core body and the push rod.
[0008] Furthermore, the sealing ring is provided with a sealing groove, a sealing ring is provided in the sealing groove, the lower end of the push rod is fixedly embedded in the first air hole, and the push rod is also provided with a pressing platform, and the pressing platform is pressed on the sealing ring. When the sliding valve seals the exhaust port, the sealing ring is tightly attached to the retaining ring. The advantage is that the sealing effect of the exhaust port can be further improved by setting the sealing ring, thereby ensuring the sealing reliability.
[0009] Furthermore, an auxiliary groove is provided at the bottom of the valve core body, an assembly hole is opened at the bottom of the installation cavity, one end of the compression spring is arranged in the assembly hole, and the other end is arranged in the auxiliary groove; the advantage is that the compression spring can be reliably and stably limited by the arranged assembly hole and the auxiliary groove, the compression spring is prevented from deviating, and the stability of the compression spring is ensured.
[0010] Furthermore, a first annular groove is opened at the lower end of the valve core body, and a first sealing ring is embedded in the first annular groove; the advantage is that the cooperation between the first annular groove and the first sealing ring can effectively improve the sealing effect of the valve core body and the installation cavity, thereby preventing the medium in the intake channel from entering the control channel through the installation cavity.
[0011] Preferably, a second annular groove is provided on the circumferential side of the movable seat, and a second sealing ring is embedded in the second annular groove; the advantage is that the cooperation between the second annular groove and the second sealing ring can effectively ensure the sealing effect between the movable seat and the valve cover, thereby ensuring that the movable seat can be reliably pressed after the gas is introduced into the control channel.
[0012] Preferably, the upper end surface of the movable seat is provided with an annular boss around its axis, and the valve cover is provided with a conical notch; the advantage is that the annular boss and the conical notch can ensure a reliable pressure gap between the movable seat and the valve cover, thereby ensuring the reliability of pressing the movable seat.
[0013] Compared with the prior art, the utility model has the following beneficial effects: the cooperation of the movable seat, the slide valve and the clamping spring can realize the conduction of the sealing valve controlled by air pressure, thereby reducing manual intervention and avoiding the limitations of the use of the electric sealing valve. At the same time, the movement of the slide valve can be controlled by introducing air pressure matching the clamping spring into the control channel to realize low-pressure control. The utility model has a simple structure and can realize the conduction of high-pressure gas by low-pressure control, and has a low production and use cost. At the same time, remote control can be realized by connecting a pipe to the control channel. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0015] Figure 1 It is a schematic diagram of an existing manually controlled sealing valve;
[0016] Figure 2 It is a cross-sectional schematic diagram of the overall structure of the utility model;
[0017] Figure 3 It is a schematic diagram of the cross-sectional structure of the valve seat of the utility model;
[0018] Figure 4 It is a schematic diagram of the cross-sectional structure of the valve body of the utility model;
[0019] Figure 5 This is a schematic diagram of the cooperation between the valve core assembly and the valve seat of the utility model;
[0020] Figure 6 It is a disassembly schematic diagram of the slide valve of the utility model. DETAILED DESCRIPTION
[0021] The utility model is described in further detail below in conjunction with the accompanying drawings.
[0022] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be used for other implementation schemes, variations, improvements, equivalent schemes, and other technical solutions that do not deviate from the spirit and scope of the utility model.
[0023] Those skilled in the art should understand that, in the disclosure of the present invention, the directions or positions indicated by the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, which are only simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the above terms should not be understood as limitations on the present invention.
[0024] As attached Figure 2-5 A sealing valve shown in the figure comprises a valve assembly and a valve core assembly, the valve assembly comprises a valve body 1 and a valve cover 2, the valve cover 2 is sealed with the valve body, the valve cover 2 is provided with a movable cavity 2.1, the valve core assembly comprises a movable seat 4 and a sliding valve 5, the movable seat 4 is vertically movably arranged in the movable cavity 2.1, and the peripheral side of the movable seat 4 is sealed with the valve cover 2, the movable seat 4 is provided with a first air passage 4.1 penetrating the upper and lower side surfaces, a pressure gap is provided between the upper side surface of the movable seat 4 and the sealing cover, the sliding valve 5 is provided with a second air passage 5.4, the valve body 1 is provided with a mounting cavity 1.1 for assembling the sliding valve 5, the valve body 1 is provided with an air inlet passage 1.2 connected to the mounting cavity 1.1, and an air inlet passage 1.2 connected to the movable cavity 2.1 The valve body 1 is also provided with a sealing port 1.5 for connecting the installation cavity 1.1 and the movable cavity 2.1. The upper end of the sliding valve 5 is extended into the first air passage 4.1 and is sealed and fixedly matched with the movable seat 4. The first air passage 4.1 is connected with the second air passage 5.4. The lower end of the sliding valve 5 is sealed and matched with the inner wall of the installation cavity 1.1. The sliding valve 5 is also provided with a sealing ring 5.11 for blocking the sealing port 1.5. The bottom of the installation cavity 1.1 is also provided with a clamping spring 5.3. The clamping spring 5.3 is used to lift the sliding valve 5 so that the sealing ring 5.11 closes the sealing port 1.5.
[0025] In the initial state, the slide valve 5 is pushed upward by the action of the compression spring 5.3, and the sealing port 1.5 is sealed by the sealing ring 5.11, so that the installation chamber 1.1 is separated from the active chamber 2.1, and the air inlet channel 1.2 is separated from the air outlet channel 1.3. When the air inlet channel 1.2 and the air outlet channel 1.3 need to be connected for use, the air flow is introduced from the control channel 1.4, and the air flow enters the pressure gap along the control channel 1.4, the second air channel 5.4, and the first air channel 4.1 and acts on the upper side of the movable seat 4. When the pressure is greater than the upward force of the compression spring 5.3, the movable seat 4 presses the slide valve 5 downward to open the sealing port 1.5, so that the installation chamber 1.1 is connected to the active chamber 2.1, so that the air flow in the air inlet channel 1.2 can enter the air outlet channel 1.3 along the installation chamber 1.1 and the active chamber 2.1. The conduction of the sealing valve is controlled by air pressure, thereby reducing manual intervention and avoiding the limitations of the use of the electric sealing valve. At the same time, the air pressure matching the compression spring 5.3 is introduced into the control channel 1.4 to control the movement of the slide valve 5, thereby realizing low-pressure control. The design has a simple structure and can realize low-pressure control of high-pressure gas conduction, and has a low production and use cost. At the same time, remote control can be realized by connecting a pipe to the control channel 1.4.
[0026] On the basis of the above, a hollow valve seat 3 is embedded in the sealing port 1.5, the valve seat is sealed with the valve body 1, a retaining ring 3.1 is arranged in the valve seat, the retaining ring 3.1 is provided with an exhaust port 3.2, a slide valve 5 is movably arranged in the valve seat 3, and a sealing ring 5.11 can movably seal the exhaust port 3.2, the valve seat is provided with an auxiliary cover 3.3 located above the exhaust port 3.2, the auxiliary cover 3.3 is provided with an active hole 3.4, the upper end of the slide valve 5 movably passes through the active hole 3.4, and the peripheral side of the auxiliary cover 3.3 is provided with a plurality of along Its radial through hole 3.5 is connected to the active chamber 2.1. The valve seat 3 provided can ensure the reliability of the slide valve 5 controlling the conduction between the installation chamber 1.1 and the active chamber 2.1, and thus reliably control the conduction between the air inlet channel 1.2 and the air outlet channel 1.3; at the same time, the cooperation of the auxiliary cover 3.3 and the through hole 3.5 can make the airflow in the installation chamber 1.1 enter the active chamber 2.1 along the radial direction of the valve seat, avoiding the airflow vertically rushing into the active chamber 2.1 to impact the active seat 4 and affect the stability of the conduction.
[0027] To further explain, the auxiliary cover 3.3 extends upward into the movable cavity 2.1, the lower end of the valve seat 3 is provided with a limiting edge 3.6, and the valve body is provided with a fixing platform 1.6 matched with the limiting edge 3.6. The cooperation between the limiting edge 3.6 and the fixing platform 1.6 can ensure the stability of the valve seat. At the same time, the auxiliary cover 3.3 can limit the moving stroke of the movable seat 4 to avoid excessive movement of the movable seat 4.
[0028] It is worth mentioning that the sliding valve 5 of the present design includes a valve core body 5.1 and a push rod 5.2 which are coaxially fixed. The valve core body 5.1 is provided with a first air guide hole 5.41, and the push rod 5.2 is provided with a second air guide hole 5.42. The first air guide hole 5.41 and the second air guide hole 5.42 are connected to form a second air channel 5.4. The sealing ring 5.11 is arranged at the upper end of the valve core body 5.1, and the upper end of the valve core body 5.1 is movably arranged in the valve seat 3. The upper end of the push rod 5.2 passes through the movable hole 3.4 and is fixed to the movable seat 4. The separate arrangement of the valve core body 5.1 and the push rod 5.2 can reduce the production and processing requirements of the sliding valve 5, especially the processing difficulty of the first air guide hole 5.41 and the second air guide hole 5.42, thereby improving the production efficiency.
[0029] On the basis of the above, in order to improve the sealing effect of the sliding valve 5, the sealing ring 5.11 is coaxially provided with a sealing groove 5.12, and a sealing ring 5.13 is provided in the sealing groove 5.12. The lower end of the push rod 5.2 passes through the sealing ring 5.13 and is fixedly embedded in the first air hole. The push rod 5.2 is also provided with a pressing platform 5.21, and the pressing platform 5.21 is pressed on the sealing ring 5.13. When the sliding valve 5 seals the exhaust port 3.2, the sealing ring 5.13 is tightly attached to the retaining ring 3.1, thereby further improving the sealing effect of the exhaust port 3.2 and ensuring the sealing reliability.
[0030] In order to ensure the reliability of the use of the compression spring 5.3 of this design, an auxiliary groove 5.14 is provided at the bottom of the valve core body 5.1, and an assembly hole 1.7 is provided at the bottom of the installation cavity 1.1. One end of the compression spring 5.3 is provided in the assembly hole 1.7, and the other end is provided in the auxiliary groove 5.14. The assembly hole 1.7 and the auxiliary groove 5.14 can reliably limit the compression spring 5.3 and prevent the compression spring 5.3 from running off. The lower end of the valve core body 5.1 is also provided with a first annular groove 5.15, and a first sealing ring 5.165.11 is embedded in the first annular groove 5.15. The cooperation between the first annular groove 5.15 and the first sealing ring 5.165.11 can effectively improve the sealing effect between the valve core body 5.1 and the installation cavity 1.1, and prevent the medium in the air intake channel 1.2 from entering the control channel 1.4 through the installation cavity 1.1.
[0031] In order to improve the sealing between the movable seat 4 and the valve cover 2, the present design provides a second annular groove on the circumference of the movable seat 4, in which a second sealing ring 5.114.3 is embedded, thereby ensuring that the movable seat 4 can be reliably pressed after gas is introduced into the control channel 1.4.
[0032] In order to ensure that the air pressure can reliably press the movable seat 4, an annular boss 4.2 is arranged on the upper end surface of the movable seat 4 around its axis, and the valve cover 2 is provided with a conical notch 2.2, so that a pressure gap is ensured between the movable seat 4 and the valve cover 2 through the annular boss 4.2 and the conical notch 2.2, thereby ensuring that the air pressure can reliably act on the upper side of the movable seat 4.
[0033] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments. Without departing from the principles, the embodiments of the present invention may be deformed or modified in any way.
Claims
1. A sealing valve, comprising a valve assembly and a valve core assembly, characterized in that: The valve assembly includes a valve body and a valve cover, the valve cover is sealed with the valve body, the valve cover is provided with a movable cavity, the valve core assembly includes a movable seat and a sliding valve, the movable seat is vertically movably arranged in the movable cavity, and the peripheral side of the movable seat is sealed with the valve cover, the movable seat is provided with a first air passage running through the upper and lower side surfaces, a pressure gap is provided between the upper side surface of the movable seat and the sealing cover, the sliding valve is provided with a second air passage, the valve body is provided with a mounting cavity for assembling the sliding valve, and the valve body is provided with an air inlet passage connected with the mounting cavity, An air outlet channel connected to the active cavity, and a control channel connected to the second air channel, the valve body is also provided with a sealing port for connecting the installation cavity and the active cavity, the upper end of the sliding valve is extended into the first air channel and is sealed and fixedly matched with the movable seat, the first air channel is connected to the second air channel, the lower end of the sliding valve is sealed and matched with the inner wall of the installation cavity, the sliding valve is also provided with a sealing ring for blocking the sealing port, and a clamping spring is also provided at the bottom of the installation cavity, the clamping spring is used to lift the sliding valve so that the sealing ring closes the sealing port.
2. A sealing valve according to claim 1, characterized in that: A hollow valve seat is embedded in the sealing port, and the valve seat is sealed with the valve body. The valve seat is provided with a retaining ring, and the retaining ring is provided with an exhaust port. The sliding valve is movably arranged in the valve seat, and the sealing ring can movably seal the exhaust port. The valve seat is provided with an auxiliary cover located above the exhaust port, and the auxiliary cover is provided with a movable hole. The upper end of the sliding valve movably passes through the movable hole, and the peripheral side of the auxiliary cover is provided with a plurality of through holes along its radial direction, and the through holes are communicated with the movable cavity.
3. A sealing valve according to claim 2, characterized in that: The auxiliary cover extends upward into the active cavity, a limiting edge is arranged at the lower end of the valve seat, and a fixing platform matched with the limiting edge is arranged on the valve body.
4. A sealing valve according to claim 2, characterized in that: The sliding valve includes a valve core body and a push rod which are coaxially fixed. The valve core body is provided with a first air guide hole, and the push rod is provided with a second air guide hole. The first air guide hole and the second air guide hole are connected to form a second air channel. The sealing ring is arranged at the upper end of the valve core body, and the upper end of the valve core body is movably arranged in the valve seat. The upper end of the push rod passes through the movable hole and is fixed to the movable seat.
5. A sealing valve according to claim 4, characterized in that: The sealing ring is provided with a sealing groove, a sealing ring is provided in the sealing groove, the lower end of the push rod is fixedly embedded in the first air hole, and the push rod is also provided with a pressing platform, and the pressing platform is pressed on the sealing ring. When the sliding valve seals the exhaust port, the sealing ring is tightly attached to the retaining ring.
6. A sealing valve according to claim 4, characterized in that: An auxiliary groove is arranged at the bottom of the valve core body, an assembly hole is opened at the bottom of the installation cavity, one end of the compression spring is arranged in the assembly hole, and the other end is arranged in the auxiliary groove.
7. A sealing valve according to claim 4, characterized in that: A first annular groove is formed at the lower end of the valve core body, and a first sealing ring is embedded in the first annular groove.
8. A sealing valve according to claim 1, characterized in that: A second annular groove is arranged on the peripheral side of the movable seat, and a second sealing ring is embedded in the second annular groove.
9. A sealing valve according to claim 1, characterized in that: The upper end surface of the movable seat is provided with an annular boss around its axis, and the valve cover is provided with a conical notch.