Flange connection type gate valve
By introducing airbags and lifting mechanisms into the flange-connected plug-in valve, the problems of wear and leakage of sealing parts during valve plate movement are solved, and the effect of reducing leakage and extending the life of the airbag is achieved.
Patent Information
- Application Number
- CN202421018205.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-11
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-05-11
AI Technical Summary
The existing flange-connected plug-in valve will aggravate the wear of the sealing part during the movement of the valve plate, resulting in poor coordination between the valve plate and the valve seat and liquid leakage.
A flange-connected plug-in valve is designed, using airbags and lifting mechanisms to reduce leakage. By opening an inflation slot on the inner surface of the piston chamber and installing an airbag in the mounting slot, the airbag expands when the gas is filled into the airbag, reducing leakage. At the same time, through the arrangement of the top plate, the wear of the airbag is reduced.
Through the installation of the airbag, the occurrence of leakage is significantly reduced, and the wear of the airbag is reduced, improving the sealing and service life of the valve.
Smart Images
Figure CN222502735U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gate valves, in particular to a flange-connected gate valve. Background Art
[0002] Flange-connected gate valve is a valve that is connected to the pipeline by flange connection. The gate valve is a valve that moves up and down, and controls the flow of the medium by moving the valve plate. Flange connection is a common pipeline connection method. By connecting the flange parts of the valve and the pipeline to each other, a sealed pipeline system is formed. Therefore, the flange-connected gate valve is a gate valve installed in the pipeline system using flange connection. This type of valve is usually used in applications that require frequent opening and closing, as well as flow regulation, such as in chemical, petroleum, natural gas and other industrial fields.
[0003] However, some existing flange-connected gate valves have structural problems when in use, so the valve plate will aggravate the wear of the sealing part during movement, so that the valve plate will not fit well with the valve seat. When the poor fit occurs, leakage will occur. Therefore, this problem needs to be solved. Utility Model Content
[0004] The utility model aims to solve the shortcomings in the prior art and proposes a flange-connected plug valve.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A flange-connected plug valve comprises a valve seat, a receiving groove is provided inside the top of the valve seat, a valve plate is slidably connected inside the receiving groove, a lifting mechanism for lifting the valve plate is provided on the top of the valve seat, a piston warehouse is provided on one side of the valve plate, a plurality of inflation grooves are provided on the inner surface of the piston warehouse, the plurality of inflation grooves are evenly provided in a ring shape, the same mounting groove is provided on the other end of the plurality of inflation grooves, an air bag is installed inside the mounting groove, a starting mechanism for starting the air bag is provided inside the piston warehouse, a rotating shaft is rotatably connected to one side of the piston warehouse, a top plate is sleeved on the surface of the rotating shaft close to the piston warehouse, and a rotating mechanism for rotating the top plate is provided at both ends of the rotating shaft, and leakage can be reduced by setting the air bag.
[0007] As a further solution of the utility model, the lifting mechanism includes a third gear, which is rotatably connected to the top of the valve seat, and a screw rod is sleeved on the top of the third gear, and the screw rod is fixedly connected to the top of the valve plate. The surface of the third gear is matched with a second gear, and the surface of the second gear is matched with a first gear. The second gear and the first gear are both rotatably connected to the top of the valve seat, and the top of the first gear is fixedly connected to a motor, and the motor is fixedly connected to the top of the valve seat. By setting the screw rod, the valve plate can be controlled to rise and fall.
[0008] As a further solution of the utility model, the starting mechanism includes an inner plate, which is slidably connected to the inside of the piston chamber, and a plurality of telescopic cylinders are fixedly connected to the surface of the inner plate close to the piston chamber. The plurality of telescopic cylinders are evenly fixed in a ring shape, and the other ends of the plurality of telescopic cylinders are fixedly connected to the inner side of the piston chamber. The surfaces of the plurality of telescopic cylinders are sleeved with springs, and one end of the plurality of springs is fixedly connected to the inner side of the inner plate, and the other ends of the plurality of springs are fixedly connected to the inner side of the piston chamber. The airbag can be inflated by the setting of the inner plate.
[0009] As a further solution of the utility model, the rotating mechanism includes a first worm wheel, the first worm wheel is sleeved on the surface of the rotating shaft, the first worm wheel surface is matched with a first worm, the first worm is rotatably connected to the top of the valve plate, the top of the first worm is sleeved with a second worm wheel, the second worm wheel surface is matched with a second worm, the second worm is rotatably connected to the top of the valve plate, one end of the second worm is sleeved with a fourth gear, the surface of the fourth gear is matched with a rack, the rack is fixedly connected to one side of the inside of the valve seat, the surface of the valve seat close to the valve plate is fixedly connected to a first flange, and the surface of the valve seat away from the first flange is installed with a second flange, and the setting of the rack can make the top plate rotate.
[0010] The beneficial effects of the utility model are:
[0011] 1. The setting of the airbag can reduce the occurrence of leakage. An air filling groove is opened on the inner surface of the piston chamber, and the air filling groove is connected to the mounting groove. Therefore, when the inner plate is compressed, the gas inside the piston chamber can be filled into the mounting groove. An airbag is installed inside the mounting groove. When the gas enters the mounting groove, the airbag can be expanded. Therefore, under the action of the airbag, the leakage phenomenon can be reduced.
[0012] 2. The setting of the top plate can greatly reduce the wear of the airbag, because the rack is installed inside the valve seat, so when the gear follows the valve plate to move up, the gear can rotate. When the gear rotates, the second worm, the first worm, and the rotating shaft will also rotate accordingly. After the rotating shaft rotates, the inner plate can be reset through the top plate. When the inner plate is reset, the airbag will also be reset accordingly, thereby reducing the contact between the airbag and the inside of the valve seat to avoid excessive friction. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a schematic diagram of the overall structure of a flange-connected gate valve proposed by the utility model;
[0014] Figure 2 This is a schematic diagram of the external structure of a flange-connected gate valve proposed by the utility model;
[0015] Figure 3 This is a schematic diagram of a lifting mechanism of a flange-connected gate valve proposed in the utility model;
[0016] Figure 4 The utility model is a schematic diagram of a starting mechanism of a flange-connected gate valve.
[0017] In the figure: 1. valve seat; 2. motor; 3. inner plate; 101. storage groove; 102. first flange; 103. second flange; 201. first gear; 202. second gear; 203. third gear; 204. screw; 205. valve plate; 206. piston chamber; 207. charging groove; 208. mounting groove; 301. telescopic cylinder; 302. spring; 303. air bag; 304. rotating shaft; 305. top plate; 306. first worm wheel; 307. first worm; 308. second worm wheel; 309. second worm; 310. fourth gear; 311. rack. DETAILED DESCRIPTION
[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0019] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0020] Reference Figure 1-Figure 4A flange-connected plug valve comprises a valve seat 1, a receiving groove 101 is provided inside the top of the valve seat 1, a valve plate 205 is slidably connected inside the receiving groove 101, a lifting mechanism for lifting the valve plate 205 is provided on the top of the valve seat 1, a piston warehouse 206 is provided on one side of the valve plate 205, a plurality of inflation grooves 207 are provided on the inner surface of the piston warehouse 206, the plurality of inflation grooves 207 are evenly provided in an annular shape, the other end of the plurality of inflation grooves 207 is provided with the same mounting groove 208, an air bag 303 is installed inside the mounting groove 208, a starting mechanism for starting the air bag 303 is provided inside the piston warehouse 206, a rotating shaft 304 is rotatably connected to one side of the piston warehouse 206, a top plate 305 is sleeved on the surface of the rotating shaft 304 close to the piston warehouse 206, a rotating mechanism for rotating the top plate 305 is provided at both ends of the rotating shaft 304, and leakage can be reduced by setting the air bag 303.
[0021] Reference Figure 1 and Figure 3 In a preferred embodiment, the lifting mechanism includes a third gear 203, which is rotatably connected to the top of the valve seat 1. A screw rod 204 is sleeved on the top of the third gear 203, and the screw rod 204 is fixedly connected to the top of the valve plate 205. The surface of the third gear 203 is matched with a second gear 202, and the surface of the second gear 202 is matched with a first gear 201. The second gear 202 and the first gear 201 are both rotatably connected to the top of the valve seat 1, and the top of the first gear 201 is fixedly connected to a motor 2, and the motor 2 is fixedly connected to the top of the valve seat 1. By setting the screw rod 204, the valve plate 205 can be controlled to be lifted and lowered.
[0022] Reference Figure 3 and Figure 4 In a preferred embodiment, the starting mechanism includes an inner plate 3, which is slidably connected to the inside of the piston chamber 206. A plurality of telescopic cylinders 301 are fixedly connected to the surface of the inner plate 3 close to the piston chamber 206. The plurality of telescopic cylinders 301 are evenly fixed in a ring shape. The other ends of the plurality of telescopic cylinders 301 are fixedly connected to the inner side of the piston chamber 206. The surfaces of the plurality of telescopic cylinders 301 are sleeved with springs 302. One ends of the plurality of springs 302 are fixedly connected to the inner side of the inner plate 3. The other ends of the plurality of springs 302 are fixedly connected to the inner side of the piston chamber 206. The airbag 303 can be inflated by the setting of the inner plate 3.
[0023] Reference Figure 2-Figure 4In a preferred embodiment, the rotating mechanism includes a first worm gear 306, which is sleeved on the surface of the rotating shaft 304. The surface of the first worm gear 306 is matched with a first worm 307, and the first worm 307 is rotatably connected to the top of the valve plate 205. A second worm gear 308 is sleeved on the top of the first worm 307, and a second worm 309 is matched on the surface of the second worm gear 308. The second worm 309 is rotatably connected to the top of the valve plate 205. A fourth gear 310 is sleeved on one end of the second worm 309, and a rack 311 is matched on the surface of the fourth gear 310. The rack 311 is fixedly connected to one side of the inside of the valve seat 1, and the first flange 102 is fixedly connected to the surface of the valve seat 1 close to the valve plate 205, and the second flange 103 is installed on the surface of the valve seat 1 away from the first flange 102. The arrangement of the rack 311 can make the top plate 305 rotate.
[0024] From the above description, it can be seen that the above-mentioned embodiment of the utility model achieves the following technical effects: when in use, the device is placed in an appropriate position and then installed. The second flange 103 and the first flange 102 are respectively installed on both sides of the valve seat 1. When connecting with the pipeline, the first flange 102 is connected to the liquid inlet pipe, and the liquid outlet pipe is connected to the second flange 103. When the installation is completed, it can be used. A piston chamber 206 is opened on one side of the valve plate 205, and an inner plate 3 is installed inside the piston chamber 206. The inner plate 3 is connected to the piston chamber 206 through a spring 302. When blocking the liquid, the liquid can compress the inner plate 3. An air filling groove 207 is provided on the inner surface of the piston chamber 206, and the air filling groove 207 is connected to the mounting groove 208. Therefore, when the inner plate 3 is compressed, the gas inside the piston chamber 206 can be filled into the mounting groove 208. An air bag 303 is installed inside the mounting groove 208. When the gas enters the mounting groove 208, the air bag 303 can be expanded. Therefore, under the action of the air bag 303, the leakage phenomenon can be reduced. A screw rod 204 is installed on the top of the valve plate 205, so that when the flow rate needs to be adjusted, , start the motor 2 to drive the third gear 203 to rotate. Because the screw rod 204 is fixed, when the third gear 203 rotates, the valve plate 205 can be moved up, thereby completing the flow adjustment. A top plate 305 is installed inside the valve plate 205, and the top plate 305 is sleeved on the surface of the rotating shaft 304. A first worm gear 306 is sleeved on one side of the rotating shaft 304, and a first worm 307 is matched on the surface of the first worm gear 306. A second worm gear 308 is sleeved on the top of the first worm gear 307, and a second worm 309 is matched on the surface of the second worm gear 308. A second worm gear 309 is sleeved on one end of the second worm gear 309. There is a fourth gear 310, and the fourth gear 310 cooperates with the rack 311, because the rack 311 is installed inside the valve seat 1, so that when the fourth gear 310 moves up with the valve plate 205, the fourth gear 310 can rotate, and when the fourth gear 310 rotates, the second worm 309, the first worm 307, and the rotating shaft 304 will also rotate accordingly. After the rotating shaft 304 rotates, the inner plate 3 can be reset through the top plate 305. After the inner plate 3 is reset, the airbag 303 will also be reset accordingly, thereby reducing the contact between the airbag 303 and the inside of the valve seat 1 to avoid excessive friction.
[0025] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.
[0026] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.
[0027] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.
[0028] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A flange-connected gate valve, comprising a valve seat (1), characterized in that: A receiving groove (101) is provided inside the top of the valve seat (1), a valve plate (205) is slidably connected inside the receiving groove (101), a lifting mechanism for lifting the valve plate (205) is provided on the top of the valve seat (1), a piston chamber (206) is provided on one side of the valve plate (205), a plurality of air-filling grooves (207) are provided on the inner surface of the piston chamber (206), the plurality of air-filling grooves (207) are evenly provided in a ring shape, and the plurality of air-filling grooves (207) are arranged on the other side. The piston chamber (206) is provided with a same installation groove (208) at the end, an air bag (303) is installed inside the installation groove (208), a starting mechanism for starting the air bag (303) is provided inside the piston chamber (206), a rotating shaft (304) is rotatably connected to one side of the piston chamber (206), a top plate (305) is sleeved on the surface of the rotating shaft (304) close to the piston chamber (206), and a rotating mechanism for rotating the top plate (305) is provided at both ends of the rotating shaft (304).
2. The flange-connected gate valve according to claim 1, characterized in that: The lifting mechanism comprises a third gear (203), the third gear (203) is rotatably connected to the top of the valve seat (1), the top of the third gear (203) is sleeved with a screw rod (204), the screw rod (204) is fixedly connected to the top of the valve plate (205), the surface of the third gear (203) is matched with a second gear (202), the surface of the second gear (202) is matched with a first gear (201), the second gear (202) and the first gear (201) are both rotatably connected to the top of the valve seat (1), the top of the first gear (201) is fixedly connected to a motor (2), and the motor (2) is fixedly connected to the top of the valve seat (1).
3. The flange-connected gate valve according to claim 2, characterized in that: The starting mechanism comprises an inner plate (3), wherein the inner plate (3) is slidably connected to the inside of the piston chamber (206), and a plurality of telescopic cylinders (301) are fixedly connected to the surface of the inner plate (3) close to the piston chamber (206), wherein the plurality of telescopic cylinders (301) are evenly fixed in a ring shape, and the other ends of the plurality of telescopic cylinders (301) are fixedly connected to the inside of the piston chamber (206), and the surfaces of the plurality of telescopic cylinders (301) are sleeved with springs (302), and one ends of the plurality of springs (302) are fixedly connected to the inside of the inner plate (3), and the other ends of the plurality of springs (302) are fixedly connected to the inside of the piston chamber (206).
4. The flange-connected gate valve according to claim 3, characterized in that: The rotating mechanism comprises a first worm wheel (306), the first worm wheel (306) is sleeved on the surface of the rotating shaft (304), the surface of the first worm wheel (306) is matched with a first worm (307), the first worm (307) is rotatably connected to the top of the valve plate (205), and the top of the first worm (307) is sleeved with a second worm wheel (308).
5. The flange-connected gate valve according to claim 4, characterized in that: The surface of the second worm wheel (308) is matched with a second worm (309), and the second worm (309) is rotatably connected to the top of the valve plate (205). One end of the second worm (309) is sleeved with a fourth gear (310), and the surface of the fourth gear (310) is matched with a rack (311), and the rack (311) is fixedly connected to one side of the inside of the valve seat (1).
6. The flange-connected gate valve according to claim 5, characterized in that: A first flange (102) is fixedly connected to the surface of the valve seat (1) on the side close to the valve plate (205), and a second flange (103) is installed on the surface of the valve seat (1) on the side away from the first flange (102).