Secondary sealing valve
The valve, with its two-stage sealing structure and bevel design, solves the leakage problem caused by valve sealing aging, achieving higher sealing performance and service life, and reducing maintenance costs.
Patent Information
- Application Number
- CN202423258991.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Existing valves are prone to aging and leakage after prolonged use, resulting in high maintenance and replacement costs and wasted system energy.
It adopts a two-stage sealing structure, with two valve cores controlling the inlet and outlet of the valve body respectively. The fluid forms a two-stage seal in the valve body. When one valve core leaks, the other valve core can still block the fluid. Combined with the inclined surface design and protective shell structure, the sealing performance is enhanced.
This reduces the probability of valve leakage, extends service life, reduces the frequency of maintenance and replacement, and saves costs.
Smart Images
Figure CN223511527U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of valve technology, and in particular to a valve with a two-stage sealing. Background Technology
[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and regulate and control the parameters of the conveyed medium. Valves have functions such as shut-off, regulation, flow guidance, backflow prevention, pressure stabilization, flow diversion, or overflow pressure relief. They can be used to control the flow of various types of fluids, such as air, water, steam, various corrosive media, mud, oil, liquid metals, and radioactive media.
[0003] However, most valves in current technology only have a single-stage seal. After prolonged use, leakage may occur due to the aging of internal seals. This requires the entire valve to be removed from the pipeline for repair or replacement, which not only increases the costs of inspection, maintenance, and procurement, but also wastes a lot of system energy, resulting in significant economic losses. Utility Model Content
[0004] In order to improve the sealing performance of the valve and reduce the probability of leakage, this utility model provides a valve with a two-stage sealing.
[0005] This utility model provides a two-stage sealing valve, which adopts the following technical solution:
[0006] A two-stage sealing valve includes a valve body and a valve core. The valve body has an inlet and an outlet at both ends. A first inlet and a second inlet are provided within the valve body. The valve core is disposed inside the valve body and includes a first valve core and a second valve core. The first and second valve cores are slidably connected to the valve body. The first valve core is disposed on the first inlet, and the second valve core is disposed on the second inlet. The first and second valve cores can completely cover the first and second inlets, respectively. The first valve core can move up and down along the axis of the first inlet, and the second valve core can move up and down along the axis of the second inlet. The first valve core and the second valve core move synchronously. With the above configuration, fluid enters the valve body through the inlet. When the first valve core and the second valve core open at the first and second water passages respectively, the fluid flows out through the first and second water passages and exits at the outlet. When the first valve core and the second valve core close at the first and second water passages respectively, the fluid is blocked by the first valve core and cannot enter the first water passage, thus achieving a seal on the valve body. If either the first valve core or the second valve core leaks, the other can still block the fluid, reducing the probability of leakage, extending the overall service life of the valve, reducing the number of maintenance and replacements, and saving costs.
[0007] Furthermore, the valve body is internally provided with a first chamber, a second chamber, and a third chamber. The first chamber is connected to the inlet, and the third chamber is connected to the outlet. The first and third chambers are located on the same plane. The second chamber is located below the first and third chambers. The first and third chambers are not connected. The first water outlet connects the first and second chambers, and the second water outlet connects the second and third chambers. With the above arrangement, after the fluid enters through the inlet, it sequentially enters the first chamber, then the second chamber through the first water outlet, and finally the third chamber through the second water outlet. After the first valve core and the second valve core close synchronously, a two-stage seal is formed, reducing the probability of fluid leakage.
[0008] Furthermore, the first valve core has a first surface and a second surface. The diameter of the first surface is smaller than the diameter of the second surface. The diameter of the first valve core gradually decreases from the second surface to the first surface. The diameter of the first surface is smaller than the diameter of the first water inlet, and the diameter of the second surface is larger than the diameter of the first water inlet. The second valve core has the same structure as the first valve core. Through the above arrangement, the first valve core can completely press and seal the first water inlet, and the second valve core can completely press and seal the second water inlet, thus ensuring sealing performance.
[0009] Furthermore, the first and second water inlets are respectively provided with chamfers at the ends near the first and second valve cores, and the chamfers have the same slope as the side of the first valve core; through the above arrangement, the contact area between the first valve core and the first water inlet is increased, and the sealing performance is improved.
[0010] Furthermore, a connecting rod is fixedly connected to the top of both the first valve core and the second valve core. The two connecting rods extend out of the valve body and are slidably connected to the valve body. A movable plate is fixedly connected to the end of the two connecting rods away from the valve core. With the above arrangement, the movable plate fixes the first valve core and the second valve core through the connecting rods, ensuring that the first valve core and the second valve core move synchronously and can simultaneously close the first water outlet and the second water outlet.
[0011] Furthermore, a protective shell is provided on the outer side of the valve body. The interior of the protective shell is hollow, and the movable plate is located inside the protective shell. A mounting hole is provided on the top of the protective shell. Through the above arrangement, the protective shell protects the movable plate and prevents external factors from affecting the movable plate and causing leakage of the valve core.
[0012] Furthermore, an operating component is provided within the mounting hole. The operating component includes a rotating rod and an operating handle. The operating handle is fixedly connected to the first end of the rotating rod and is located outside the protective shell. The second end of the rotating rod is located inside the valve body and is rotatably connected to the valve body. The rotating rod passes through the movable rod and is threadedly connected to the movable rod. A guide rod is provided inside the protective shell, parallel to the rotating rod, and slidably connected to the movable plate. With the above configuration, rotating the operating handle causes the rotating rod to rotate, and the movable plate moves up and down along the guide rod, simultaneously driving the first valve core and the second valve core to move up and down, thereby opening or closing the valve body.
[0013] In summary, this utility model has at least one of the following beneficial technical effects:
[0014] 1. By setting two valve cores to simultaneously control the opening and closing of the valve body, fluid enters through the inlet of the valve body. When the first valve core and the second valve core are open at the first and second water passages respectively, the fluid flows out through the first and second water passages and exits at the outlet. When the first valve core and the second valve core are closed at the first and second water passages respectively, the fluid is blocked by the first valve core and cannot enter the first water passage, thus achieving a seal of the valve body. If either the first or second valve core leaks, the other can still block the fluid, reducing the probability of leakage, extending the overall service life of the valve, reducing the number of maintenance and replacements, and saving costs.
[0015] 2. By setting the sides of the first valve core and the second valve core as inclined surfaces, the first valve core can completely press and seal the first water inlet, and the second valve core can completely press and seal the second water inlet, thus ensuring sealing performance.
[0016] 3. The protective shell protects the internal structure and prevents external factors from affecting the movement of the moving plate, which could lead to leakage of the valve core. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this application;
[0018] Figure 2 This is a cross-sectional structural diagram of the entire application;
[0019] Figure 3 This is a cross-sectional structural schematic diagram of the valve body of this application;
[0020] Figure 4 This is a schematic diagram of the structure of the first valve core, the second valve core, and the movable plate in this application.
[0021] Figure 5 This is a schematic diagram of the structure of the operating component of this application;
[0022] Reference numerals: 100, valve body; 110, inlet; 120, outlet; 130, first water passage; 140, second water passage; 150, first chamber; 160, second chamber; 170, third chamber; 180, chamfer; 210, first valve core; 220, second valve core; 230, connecting rod; 240, movable plate; 300, operating component; 310, rotating rod; 320, operating handle; 400, protective shell; 410, mounting hole; 420, guide rod. Detailed Implementation
[0023] The technical solutions of this utility model are clearly and completely described below through specific embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0024] The following combination Figures 1 to 5 The present invention will be described in further detail below.
[0025] This embodiment discloses a two-stage sealing valve, referring to... Figure 1 The valve body 100 includes a valve body 100 for allowing fluid to pass through, a first valve core 210 and a second valve core 220 for controlling the fluid flow, and an operating element 300 for controlling the simultaneous opening and closing of the first valve core 210 and the second valve core 220. When the first valve core 210 and the second valve core 220 are in the open state, fluid can pass through the valve body 100. When the first valve core 210 and the second valve core 220 are in the closed state, the fluid is blocked by the first valve core 210, thus sealing the valve body 100. If either the first valve core 210 or the second valve core 220 leaks, the other can still block the fluid, thus achieving a two-stage seal.
[0026] Reference Figures 2-3This embodiment adds the following technical features (the structure of the valve body 100 is specifically configured as follows): the valve body 100 has an inlet 110 and an outlet 120 at both ends, a first water passage 130 and a second water passage 140 are provided inside the valve body 100, and a first cavity 150, a second cavity 160 and a third cavity 170 are provided inside the valve body 100. The first cavity 150 is connected to the inlet 110, the third cavity 170 is connected to the outlet 120, the first cavity 150 and the third cavity 170 are located on the same plane, the second cavity 160 is located below the first cavity 150 and the third cavity 170, the first cavity 150 and the third cavity 170 are not connected, the first water passage 130 connects the first cavity 150 and the second cavity 160, and the second water passage 140 connects the second cavity 160 and the third cavity 170.
[0027] The valve core is disposed inside the valve body 100. The valve core includes a first valve core 210 and a second valve core 220. The first valve core 210 and the second valve core 220 are slidably connected to the valve body 100. The first valve core 210 is disposed on the first water inlet 130, and the second valve core 220 is disposed on the second water inlet 140. The first valve core 210 and the second valve core 220 can completely cover the first water inlet 130 and the second water inlet 140, respectively. The first valve core 210 can move up and down along the axis of the first water inlet 130, and the second valve core 220 can move up and down along the axis of the second water inlet 140. The first valve core 210 and the second valve core 220 move synchronously.
[0028] Thus, fluid enters through the inlet 110 of the valve body 100. When the first valve core 210 and the second valve core 220 are opened at the first through port 130 and the second through port 140 respectively, the fluid enters through the inlet 110 and sequentially enters the first chamber 150, passes through the first through port 130 into the second chamber 160, then passes through the second through port 140 into the third chamber 170, and finally flows out through the outlet 120. When the first valve core 210 and the second valve core 220 are closed at the first through port 130 and the second through port 140 respectively, the fluid is blocked by the first valve core 210 and cannot enter the first through port 130, thus achieving a seal on the valve body 100. If either the first valve core 210 or the second valve core 220 leaks, the other can still block the fluid. After the first valve core 210 and the second valve core 220 are closed simultaneously, a two-stage seal is formed, reducing the probability of leakage, extending the overall service life of the valve, reducing the number of maintenance and replacements, and saving costs.
[0029] Reference Figure 2 , Figure 4This embodiment adds the following technical features (the structure of the valve core and the protective shell 400 is specifically configured as follows): the first valve core 210 has a first surface and a second surface, the diameter of the first surface is smaller than the diameter of the second surface, the diameter of the first valve core 210 gradually decreases from the second surface to the first surface, the diameter of the first surface is smaller than the diameter of the first water inlet 130, the diameter of the second surface is larger than the diameter of the first water inlet 130, and the second valve core 220 has the same structure as the first valve core 210; the first water inlet 130 and the second water inlet 140 are provided with a chamfer 180 at the end near the first valve core 210 and the second valve core 220, and the chamfer 180 is the same as the slope of the side of the first valve core 210.
[0030] Thus, the first valve core 210 can completely press and seal the first water inlet 130, and the second valve core 220 can completely press and seal the second water inlet 140. Furthermore, the first water inlet 130 and the second water inlet 140 are provided with chamfers 180, which increases the contact area between the first valve core 210 and the first water inlet 130 and improves the sealing performance.
[0031] A protective shell 400 is provided on the outer side of the valve body 100. The protective shell 400 is hollow inside. A mounting hole 410 is provided on the top of the protective shell 400. A connecting rod 230 is fixedly connected to the top of the first valve core 210 and the second valve core 220. The two connecting rods 230 extend out of the valve body 100 and are slidably connected to the valve body 100. A movable plate 240 is fixedly connected to the end of the two connecting rods 230 away from the valve core. The movable plate 240 is provided with a threaded hole and a guide hole. The movable plate 240 is inside the protective shell 400.
[0032] Thus, the movable plate 240 fixes the first valve core 210 and the second valve core 220 through the connecting rod 230, ensuring that the first valve core 210 and the second valve core 220 move synchronously, and can simultaneously close the first water outlet 130 and the second water outlet 140; the protective shell 400 protects the movable plate 240 and prevents external factors from affecting the movable plate 240 and causing leakage of the valve core.
[0033] Reference Figures 1-2 , Figure 5This embodiment adds the following technical features (the structure of the operating component 300 is specifically configured as follows): An operating component 300 is disposed within the mounting hole 410. The operating component 300 includes a rotating rod 310 and an operating handle 320. The operating handle 320 is fixedly connected to the first end of the rotating rod 310 and is disposed outside the protective shell 400. The second end of the rotating rod 310 is disposed within the valve body 100 and rotatably connected to the valve body 100. The rotating rod 310 passes through the movable rod and is threaded, connecting the rotating rod 310 to the movable rod. A guide rod 420 is disposed within the protective shell 400, parallel to the rotating rod 310, passing through a guide hole, and slidably connected to the movable plate 240. Preferably, a bearing is fixed within the valve body 100, and the second end of the rotating rod 310 is fixedly connected to the inner ring of the bearing.
[0034] Thus, by turning the operating handle 320, the rotating rod 310 rotates, and the movable plate 240 moves up and down along the guide rod 420, which in turn drives the first valve core 210 and the second valve core 220 to move up and down, thereby opening or closing the valve body 100.
[0035] The implementation principle of this embodiment is as follows:
[0036] Fluid enters through the inlet 110 of the valve body 100. Turning the operating handle 320 causes the rotating rod 310 to rotate, and the movable plate 240 moves upward along the guide rod 420. Simultaneously, this causes the first valve core 210 and the second valve core 220 to move away from the first through-port 130 and the second through-port 140, respectively. When the first valve core 210 and the second valve core 220 open at the first through-port 130 and the second through-port 140, respectively, the fluid enters through the inlet 110 and sequentially enters the first chamber 150, passes through the first through-port 130 into the second chamber 160, then passes through the second through-port 140 into the third chamber 170, and finally flows out through the outlet 120, thus opening the valve. Reversing the rotation... The operating handle 320 is activated, the rotating rod 310 rotates, and the movable plate 240 moves downward along the guide rod 420. At the same time, it drives the first valve core 210 and the second valve core 220 to contact and press against the first water inlet 130 and the second water inlet 140 respectively. The fluid is blocked by the first valve core 210 and cannot enter the first water inlet 130, thus achieving a seal on the valve body 100. When either the first valve core 210 or the second valve core 220 leaks, the other can still block the fluid. After the first valve core 210 and the second valve core 220 close simultaneously, a two-stage seal is formed, which reduces the probability of leakage, extends the overall service life of the valve, reduces the number of maintenance and replacements, and saves costs.
[0037] The first valve core 210 can completely press and seal the first water inlet 130, and the second valve core 220 can completely press and seal the second water inlet 140. Furthermore, the first water inlet 130 and the second water inlet 140 are provided with chamfers 180, which increases the contact area between the first valve core 210 and the first water inlet 130 and improves the sealing performance.
[0038] The movable plate 240 fixes the first valve core 210 and the second valve core 220 through the connecting rod 230, ensuring that the first valve core 210 and the second valve core 220 move synchronously, and can simultaneously close the first water outlet 130 and the second water outlet 140; the protective shell 400 protects the movable plate 240 and prevents external factors from affecting the movable plate 240 and causing leakage of the valve core.
[0039] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.
Claims
1. A valve with a two-stage sealing mechanism, characterized in that, The device includes a valve body and a valve core. The valve body has an inlet and an outlet at both ends. The valve body has a first inlet and a second inlet. The valve core is disposed inside the valve body and includes a first valve core and a second valve core. The first valve core and the second valve core are slidably connected to the valve body. The first valve core is disposed on the first inlet, and the second valve core is disposed on the second inlet. The first valve core and the second valve core can completely cover the first inlet and the second inlet, respectively. The first valve core can move up and down along the axis of the first inlet, and the second valve core can move up and down along the axis of the second inlet. The first valve core and the second valve core move synchronously.
2. The valve with a secondary seal according to claim 1, characterized in that, The valve body is provided with a first chamber, a second chamber and a third chamber. The first chamber is connected to the water inlet and the third chamber is connected to the water outlet. The first chamber and the third chamber are located on the same plane. The second chamber is located below the first chamber and the third chamber. The first chamber and the third chamber are not connected. The first water outlet connects the first chamber and the second chamber, and the second water outlet connects the second chamber and the third chamber.
3. The valve with a secondary seal according to claim 1, characterized in that, The first valve core has a first surface and a second surface. The diameter of the first surface is smaller than the diameter of the second surface. The diameter of the first valve core gradually decreases from the second surface to the first surface. The diameter of the first surface is smaller than the diameter of the first water inlet. The diameter of the second surface is larger than the diameter of the first water inlet. The second valve core has the same structure as the first valve core.
4. The valve with a secondary seal according to claim 1, characterized in that, The first water inlet and the second water inlet are respectively provided with chamfers at the ends near the first valve core and the second valve core, and the chamfers are the same as the slope of the side of the first valve core.
5. The valve with a secondary seal according to claim 1, characterized in that, The top of both the first valve core and the second valve core are fixedly connected to a connecting rod. The two connecting rods extend out of the valve body and are slidably connected to the valve body. A movable plate is fixedly connected to the end of the two connecting rods away from the valve core.
6. The valve with a secondary seal according to claim 1, characterized in that, The valve body is provided with a protective shell on its outer side. The protective shell is hollow inside. The movable plate is inside the protective shell. The top of the protective shell is provided with a mounting hole.
7. The valve with a secondary seal according to claim 1, characterized in that, An operating component is provided in the mounting hole. The operating component includes a rotating rod and an operating handle. The operating handle is fixedly connected to the first end of the rotating rod and is located outside the protective shell. The second end of the rotating rod is located inside the valve body and is rotatably connected to the valve body. The rotating rod passes through the movable rod and is threadedly connected to the movable rod. A guide rod is provided inside the protective shell. The guide rod is parallel to the rotating rod and is slidably connected to the movable plate.