Valve with auxiliary closing device

Abstract

The invention discloses a valve with an auxiliary closing device and relates to the technical field of valves, the valve comprises an auxiliary valve and a valve body which are detachably connected with a pipeline, the valve body comprises a valve element, a valve plate capable of blocking the pipeline is slidably connected in the auxiliary valve, the valve body further comprises a valve rod, and when the valve rod rotates, the valve element can be driven to rotate to block the pipeline; or the valve plate can be driven to slide to block the pipeline. The device is convenient to operate, the pipeline can be blocked when the valve is maintained, and the valve can be disassembled only after the pipeline is blocked, so that the safety of disassembling the valve is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of valves, and in particular to a valve with an auxiliary closing device. Background Art

[0002] Valves are control components in fluid conveying systems. They have functions such as shutoff, regulation, diversion, backflow prevention, pressure stabilization, diversion or overflow pressure relief. They can be used to control the flow of various fluids such as water, steam, oil, and gas. Valves in conveying systems often need to be opened frequently, which can easily lead to wear, blockage, and even damage to the internal components of the valve. At this time, the valves usually need to be repaired or disassembled and replaced.

[0003] Patent publication number CN 221800760 U discloses a valve that is easy to maintain, including a valve body, a mounting plate installed on the top of the valve body, a rectangular block installed vertically on the top of the mounting plate, a valve handle installed on the mounting plate through the rectangular block, four limit rods vertically connected to the bottom of the valve handle, a mounting frame installed vertically on one side of the top of the valve handle, connecting blocks installed inside both side plates of the mounting frame, and two limit bars horizontally slidably connected inside the two connecting blocks.

[0004] However, it still has the following problems: it cannot effectively seal the pipeline, the maintenance and disassembly of the valve often face water pressure, and pressure maintenance is more difficult; after closing the front-end water supply pipeline, there will still be a lot of liquid remaining in the pipeline, and directly disassembling the valve will cause water to flow out, affecting the surrounding environment. Summary of the Invention

[0005] In order to solve the above problems in the prior art, a valve with an auxiliary closing device is provided.

[0006] The technical solution adopted by the present invention to solve its technical problem is: The present invention proposes a valve with an auxiliary closing device, comprising an auxiliary valve and a valve body, both of which are detachably connected to a pipeline. The valve body includes a valve core, and a valve plate capable of sealing the pipeline is slidably connected inside the auxiliary valve. The valve body also includes a valve stem. When the valve stem rotates, it can drive the valve core to rotate to seal the pipeline, or it can drive the valve plate to slide to seal the pipeline.

[0007] Preferably, a second gear is rotatably connected inside the auxiliary valve, a screw is threadedly connected inside the second gear, and the screw is fixedly connected to the valve plate.

[0008] Preferably, a first gear is rotatably connected to the valve body, a transition gear is rotatably connected to the valve body, and two ends of the transition gear are respectively meshed with the first gear and the second gear.

[0009] Preferably, the valve stem is fixedly connected to a first spline shaft, the first spline shaft is fixedly connected to a second spline shaft via a polished rod, the polished rod fixing sleeve is provided with a pressure plate, and a compression spring is provided between the pressure plate and the valve body.

[0010] Preferably, the first gear is provided with a first spline groove for the first spline shaft to slide into, and the valve core is provided with a second spline groove for the second spline shaft to slide into, and the diameters of the first spline groove and the second spline groove are both larger than the diameter of the polished rod.

[0011] Preferably, when the valve stem moves downward to cause the first spline shaft to slide into the first spline groove, the polished rod slides into the second spline groove and the second spline shaft slides out of the second spline groove.

[0012] Preferably, the valve body is rotatably connected with a bolt, and the auxiliary valve is provided with a threaded hole for the bolt to be screwed into.

[0013] Preferably, a limit plate is slidably connected in the auxiliary valve, and the limit plate is connected to the auxiliary valve through a small spring. A ratchet is provided at the contact portion between the bolt and the limit plate, and the ratchet allows the bolt to rotate only in the tightening direction.

[0014] Preferably, a wedge rod is slidably connected inside the valve plate, and the wedge rod is connected to a magnet that has an attractive effect on the limit plate, and the magnetic force of the magnet is greater than the elastic force of the small spring.

[0015] Preferably, the valve plate is slidably connected to a piston, the piston is connected to the valve plate via a large spring, the wedge rod is located on one side of the piston, and the piston is arranged on one side of the water inlet of the pipeline.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present application is provided with a valve stem, which can drive the valve core to rotate, thereby realizing normal opening and closing of the pipeline. When the valve needs to be disassembled, it is only necessary to press down the valve stem, and the valve stem drives the first spline shaft to slide into the first spline groove of the first gear. At this time, the rotation of the valve stem can drive the valve plate to descend, thereby realizing sealing of the pipeline. At the same time, the light rod slides into the valve core, so it will not drive the valve core to rotate. A single driving component can drive the valve core and valve plate to move independently, effectively simplifying the overall structure, with a high degree of component integration, reducing production costs and assembly difficulty, simple processing and manufacturing, and convenient operation.

[0017] 2. The present application provides a limit plate, and the contact part between the limit plate and the bolt is provided with a ratchet. The setting of the ratchet can make the bolt move in only one direction, so that after the bolt is screwed into the auxiliary valve, the bolt cannot be removed, thereby effectively improving the sealing of the device and preventing the bolt from loosening after long-term use. Only when the valve plate seals the pipeline, the residual liquid in the pipeline impacts the piston, and the piston drives the wedge rod to move, so that the magnet moves to the side of the limit plate, thereby realizing the separation of the limit plate and the bolt. Only when the pipeline is sealed, the valve can be disassembled, thereby effectively improving the safety of valve disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments with reference to the following drawings, in which: Figure 1 It is an overall stereogram of the present invention; Figure 2 The present invention is the overall main view Figure 1 ; Figure 3 The present invention is the overall main view Figure 1 (in working state); Figure 4 yes Figure 2 Schematic diagram of the structure of the middle piston; Figure 5 yes Figure 2 Schematic diagram of the coordination between the middle limit plate and the bolts Figure 1 ; Figure 6 yes Figure 2 Schematic diagram of the coordination between the middle limit plate and the bolts Figure 2 ; Figure 7 The present invention is the overall main view Figure 2 .

[0019] Description of reference numerals: 1 Valve body; 2 Valve core; 3 Valve stem; 4 First spline shaft; 5 Second spline shaft; 6 Compression spring; 7 First gear; 8 Second gear; 9 Screw; 10 Valve plate; 11 Wedge rod; 12 Magnet; 13 Piston; 14 Large spring; 15 Bolt; 16 Limit plate; 17 Small spring; 18 Air vent; 19 Ratchet; 20 Polish rod; 21 Pipeline; 22 Auxiliary valve. DETAILED DESCRIPTION

[0020] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0021] like Figure 1-Figure 7 As shown, this embodiment proposes a valve with an auxiliary closing device, including an auxiliary valve 22 and a valve body 1, both of which are detachably connected to a pipe 21. Flanges are provided on both sides of the valve body 1 and the auxiliary valve 22, and the flanges are provided with through holes. The pipe 21 includes a water inlet end and a water outlet end, wherein the water inlet end and the auxiliary valve 22 are detachably connected by bolts 15, and then the auxiliary valve 22 is detachably connected to the valve body 1 by the bolts 15, and the valve body 1 is detachably connected to the water outlet end by the bolts 15.

[0022] The valve body 1 includes a valve core 2, which is rotatably connected to the valve body 1. When the valve core 2 rotates, the valve body 1 can be sealed and opened. A valve plate 10 is slidably connected in the auxiliary valve 22 to seal the pipeline 21. The valve plate 10 can only slide in the vertical direction. It also includes a valve stem 3. When the valve stem 3 rotates, it can drive the valve core 2 to rotate to seal the pipeline 21, or it can drive the valve plate 10 to slide to seal the pipeline 21.

[0023] A second gear 8 is rotatably connected to the auxiliary valve 22, and a screw 9 is threadedly connected to the second gear 8. The screw 9 and the valve plate 10 are fixedly connected. When the second gear 8 rotates, it can drive the screw 9 to move vertically, thereby driving the valve plate 10 to slide vertically, thereby achieving the sealing and opening of the pipeline 21.

[0024] A first gear 7 is rotatably connected inside the valve body 1, and a transition gear is rotatably connected to the valve body 1. The two ends of the transition gear are respectively engaged with the first gear 7 and the second gear 8. When the first gear 7 rotates, it can drive the transition gear to rotate. When the transition gear drives the second gear 8 to rotate, the movement of the valve plate 10 is realized.

[0025] The lower end of the valve stem 3 is fixedly connected to the first spline shaft 4, the lower end of the first spline shaft 4 is fixedly connected to the polished rod 20, and the lower end of the polished rod 20 is fixedly connected to the second spline shaft 5. When the valve stem 3 rotates, it can drive the first spline shaft 4, the polished rod 20 and the second spline shaft 5 to rotate at the same time. The polished rod 20 is fixedly sleeved with a pressure plate, and a compression spring 6 is arranged between the pressure plate and the valve body 1.

[0026] The first gear 7 is provided with a first spline groove for the first spline shaft 4 to slide into, and the valve core 2 is provided with a second spline groove for the second spline shaft 5 to slide into. The diameters of the first spline groove and the second spline groove are both larger than the diameter of the light rod 20. The compression spring 6 is sleeved on the light rod 20. The lower end of the compression spring 6 is connected to the valve body 1, and the upper end of the compression spring 6 is rotatably connected to the pressure plate or in sliding contact with the pressure plate. The compression spring 6 is used for resetting the valve stem 3, and the valve stem 3 can rotate and slide relative to the valve body 1.

[0027] In the initial state, under the elastic force of the compression spring 6, the second spline shaft 5 slides into the second spline groove of the valve core 2. Therefore, the rotation of the valve stem 3 can drive the valve core 2 to rotate. At this time, the light rod 20 is located in the first spline groove, so it will not drive the first gear 7 to rotate.

[0028] When the valve stem 3 moves downward and the first spline shaft 4 slides into the first spline groove, the light rod 20 slides downward into the second spline groove, and at the same time the second spline shaft 5 slides downward out of the second spline groove. At this time, the compression spring 6 is compressed, and the rotation of the valve stem 3 can drive the first gear 7 to rotate, without driving the valve core 2 to rotate, thereby realizing the separate driving of the valve core 2 and the valve plate 10.

[0029] The valve stem 3 can drive the valve core 2 to rotate, thereby realizing normal opening and closing of the pipeline 21. When the valve body 1 needs to be disassembled, it is only necessary to press down the valve stem 3. The valve stem 3 drives the first spline shaft 4 to slide into the first spline groove of the first gear 7. At this time, the rotation of the valve stem 3 can drive the valve plate 10 to descend, thereby realizing the blocking of the pipeline 21. At the same time, the light rod 20 slides into the valve core 2, so the valve stem 3 will not drive the valve core 2 to rotate. Using one driving component can drive the valve core 2 and the valve plate 10 to move independently, which effectively simplifies the overall structure, has a high degree of component integration, reduces production costs and assembly difficulty, is simple to process and manufacture, and is convenient to operate.

[0030] The valve body 1 is rotatably connected with a bolt 15, and the auxiliary valve 22 is provided with a threaded hole for the bolt 15 to be screwed in. There are several bolts 15. By rotating the bolt 15, the bolt 15 can be screwed into the threaded hole of the auxiliary valve 22, thereby realizing the connection between the valve body 1 and the auxiliary valve 22.

[0031] A limit plate 16 is slidably connected inside the auxiliary valve 22. The limit plate 16 is connected to the auxiliary valve 22 through a small spring 17. A ratchet 19 is provided at the contact portion between the bolt 15 and the limit plate 16. The ratchet 19 enables the bolt 15 to rotate only in the tightening direction. The ends of the bolt 15 and the limit plate 16 that are close to each other are respectively connected with a ratchet 19.

[0032] A cavity is provided in the auxiliary valve 22, and a limit plate 16 is slidably connected in the cavity. The cavity and the threaded hole are connected. The number of the limit plates 16 is the same as the number of the threaded holes, and the limit plate 16 is provided on one side of the threaded hole. After the bolt 15 passes through the threaded hole, the ratchet 19 of the bolt 15 can contact the ratchet 19 on the limit plate 16, so that the bolt 15 and the limit plate 16 can cooperate with each other.

[0033] One end of the small spring 17 is connected to the auxiliary valve 22, and the other end of the small spring 17 is connected to the limit plate 16. Under the elastic force of the small spring 17, the limit plate 16 and the ratchet 19 provided on the bolt 15 can always be in a matched state. When the bolt 15 is further tightened, the inclined surfaces of the ratchet 19 are in contact, which can drive the limit plate 16 to move back and forth without affecting the screwing in of the bolt 15. When the bolt 15 is unscrewed, the horizontal surfaces of the ratchet 19 are in contact, and cannot drive the limit plate 16 to move back and forth, thereby preventing the bolt 15 from being unscrewed. The limit plate 16 can thus only allow the bolt 15 to be screwed in but not out.

[0034] A wedge rod 11 is slidably connected inside the valve plate 10, and the wedge rod 11 is connected to a magnet 12 that has an attractive effect on the limit plate 16. The magnetic force of the magnet 12 is greater than the elastic force of the small spring 17. When the wedge rod 11 slides to one side of the limit plate 16, the magnet 12 can generate an attractive force on the limit plate 16, thereby compressing the small spring 17, causing the limit plate 16 and the bolt 15 to disengage, and the bolt 15 can be unscrewed.

[0035] The valve plate 10 is also provided with an air vent 18. When the wedge rod 11 moves, the gas in the space where the wedge rod 11 is located can be discharged through the air vent 18, thereby facilitating the movement of the wedge rod 11. The space where the wedge rod 11 is located is independent of the cavity where the limit plate 16 is located. The end of the limit plate 16 close to the magnet 12 can be fixedly connected to an iron block, which facilitates the magnet 12 to attract the limit plate 16.

[0036] The valve plate 10 is slidably connected to the piston 13, and the piston 13 is connected to the valve plate 10 through a large spring 14. The right end of the large spring 14 is connected to the piston 13, and the left end of the large spring 14 is connected to the valve plate 10. The wedge rod 11 is located on one side of the piston 13. In the initial state, under the elastic force of the large spring 14, a certain gap is left between the piston 13 and the wedge rod 11, and the piston 13 is arranged on the water inlet side of the pipe 21.

[0037] like Figure 7 As shown, Figure 7 The present invention is the overall main view Figure 2 , considering that when part of the pipeline 21 is repaired, the direction of the incoming water may be bidirectional, or when it is unidirectionally transported, there is still water on the other side of the part of the pipeline 21, so two auxiliary valves 22 can be provided and symmetrically arranged on both sides of the valve body 1. At this time, two transition gears are provided, and the two transition gears are respectively engaged with the second gear 8. When the valve stem 3 rotates, it can drive the two second gears 8 to rotate at the same time, thereby driving the two valve plates 10 to move downward at the same time, thereby realizing the blocking work on both sides of the pipeline 21.

[0038] A method for using a valve with an auxiliary closing device, using the above-mentioned valve with an auxiliary closing device, comprises the following steps: S1: When the valve body 1 needs to be installed, the bolt 15 is screwed into the threaded hole of the auxiliary valve 22 by rotating the bolt 15. When the ratchet 19 of the bolt 15 contacts the ratchet 19 of the limit plate 16, the ratchet 19 allows the bolt 15 to rotate only in the screwing direction; S2: When the valve body 1 needs to be repaired, the valve stem 3 is pressed down, and the valve stem 3 drives the first spline shaft 4 to slide into the first spline groove of the first gear 7. At the same time, the polished rod 20 slides into the second spline groove of the valve core 2, and the second spline shaft 5 slides out of the second spline groove of the valve core 2. At this time, the valve stem 3 is rotated, and the valve stem 3 drives the first gear 7 to rotate; S3: The first gear 7 drives the second gear 8 to rotate, the second gear 8 drives the screw 9 to descend, the screw 9 drives the valve plate 10 to descend, the valve plate 10 seals the pipe 21, the water in the pipe 21 impacts the piston 13, and the piston 13 drives the wedge rod 11 to slide; S4: The wedge rod 11 moves to one side of the limit plate 16, and the magnet 12 attracts the limit plate 16, causing the small spring 17 to be compressed, thereby causing the limit plate 16 to disengage from the bolt 15. The ratchet 19 of the limit plate 16 no longer limits the bolt 15 at this time, and the bolt 15 can be screwed outward to achieve disassembly of the valve body 1. At the same time, the valve plate 10 can seal the pipeline 21.

[0039] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A valve with an auxiliary closing device, comprising an auxiliary valve (22) and a valve body (1) both detachably connected to a pipeline (21), wherein the valve body (1) includes a valve core (2), characterized in that: The auxiliary valve (22) is slidably connected to a valve plate (10) capable of blocking the pipeline (21), and further comprises a valve stem (3). When the valve stem (3) rotates, it can drive the valve core (2) to rotate to block the pipeline (21), or it can drive the valve plate (10) to slide to block the pipeline (21).

2. A valve with an auxiliary closing device according to claim 1, characterized in that: A second gear (8) is rotatably connected to the auxiliary valve (22), a screw rod (9) is internally threadedly connected to the second gear (8), and the screw rod (9) and the valve plate (10) are fixedly connected.

3. A valve with an auxiliary closing device according to claim 2, characterized in that: A first gear (7) is rotatably connected inside the valve body (1), and a transition gear is rotatably connected to the valve body (1), with both ends of the transition gear respectively meshing with the first gear (7) and the second gear (8).

4. A valve with an auxiliary closing device according to claim 2, characterized in that: The valve stem (3) is fixedly connected to a first spline shaft (4), and the first spline shaft (4) is fixedly connected to a second spline shaft (5) via a polished rod (20). The polished rod (20) is fixedly sleeved with a pressure plate, and a compression spring (6) is provided between the pressure plate and the valve body (1).

5. A valve with an auxiliary closing device according to claim 4, characterized in that: The first gear (7) is provided with a first spline groove for the first spline shaft (4) to slide into, and the valve core (2) is provided with a second spline groove for the second spline shaft (5) to slide into, and the diameters of the first spline groove and the second spline groove are both larger than the diameter of the polished rod (20).

6. A valve with an auxiliary closing device according to claim 5, characterized in that: When the valve stem (3) moves downward to cause the first spline shaft (4) to slide into the first spline groove, the polished rod (20) slides into the second spline groove and the second spline shaft (5) slides out of the second spline groove.

7. The valve with auxiliary closing device according to claim 1, characterized in that: The valve body (1) is rotatably connected with a bolt (15), and the auxiliary valve (22) is provided with a threaded hole for the bolt (15) to be screwed in.

8. The valve with auxiliary closing device according to claim 7, characterized in that: A limit plate (16) is slidably connected inside the auxiliary valve (22), and the limit plate (16) is connected to the auxiliary valve (22) via a small spring (17). A ratchet (19) is provided at the contact portion between the bolt (15) and the limit plate (16), and the ratchet (19) enables the bolt (15) to rotate only in the tightening direction.

9. The valve with auxiliary closing device according to claim 8, characterized in that: A wedge rod (11) is slidably connected inside the valve plate (10), and the wedge rod (11) is connected to a magnet (12) that has an attractive effect on the limit plate (16), and the magnetic force of the magnet (12) is greater than the elastic force of the small spring (17).

10. The valve with auxiliary closing device according to claim 9, characterized in that: The valve plate (10) is slidably connected to a piston (13), the piston (13) being connected to the valve plate (10) via a large spring (14), the wedge rod (11) being located on one side of the piston (13), and the piston (13) being arranged on one side of the water inlet of the pipe (21).

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