Valve cover structure of valve

Abstract

The utility model belongs to the technical field of pipeline valves, and particularly relates to a valve bonnet structure, which comprises a valve body and is characterized in that a mounting seat is arranged at the top of the valve body, a valve bonnet is detachably connected to the top of the mounting seat, two first fixing strips are fixedly connected to the bottom of the mounting seat, and the valve bonnet is detachably connected to the top of the mounting seat. A toothed belt is slidably connected to the interior of the first fixing strip, fixing blocks are fixedly connected to the two sides of the mounting base, and connecting shafts are arranged on the inner sides of the fixing blocks; through linkage between the first fixing strip and the second fixing strip, the two sides of the valve cover can be synchronously extruded downwards during installation, so that the two sides of a gasket located between the installation base and the valve cover are stressed by downward extrusion force of the valve cover at the same time, and the gasket is stressed more evenly when a first screw is installed; the situation that when the first screw is installed, due to uneven stress, the thickness of the gasket is uneven, and the sealing performance is affected is avoided, and the sealing performance between the valve cover and the installation base is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline valves, and in particular relates to a valve cover structure. Background Art

[0002] A valve is a device used to control the flow of fluids such as liquids, gases, steam, etc. It is installed on a pipeline to open, close, adjust or control the flow and direction of the fluid. The valve cover is an important component of the valve, usually used to cover and seal the opening of the valve. The valve cover is usually connected to the mounting seat on the top of the valve body by screws, and a gasket needs to be provided between the valve cover and the mounting seat. Due to the large number of screws, when the valve cover is fixed by screws, the pressure applied by the valve cover to the bottom gasket during the fixing of the first screw is uneven, which will cause the gasket at the installation position of the first screw to be squeezed to the other side, resulting in uneven gasket thickness, which can easily affect the sealing between the valve cover and the valve body. Utility Model Content

[0003] The utility model provides a valve cover structure, which has the characteristics that the two sides of the valve cover can be pressed downward synchronously during installation through the linkage between the first fixing strip and the second fixing strip, which is beneficial to make the gasket more evenly stressed when installing the first screw.

[0004] The utility model provides the following technical solution: it includes a valve body, characterized in that: a mounting seat is provided at the top of the valve body, the top of the mounting seat is detachably connected to a valve cover, the bottom of the mounting seat is fixedly connected with two fixing strips 1, the interior of the fixing strip 1 is slidably connected with a toothed belt, two sides of the mounting seat are fixedly connected with fixing blocks, the inner side of the fixing block is provided with a connecting shaft, two ends of the connecting shaft are rotatably connected with gears, a vertical fixing plate is provided at the top of one end of the fixing strip 1, the toothed belt is slidably connected to the inner side of the vertical fixing plate, the toothed belt is meshed with the gear, the top of the valve cover is fixedly connected with two fixing strips 2, the bottom of the two ends of the fixing strip 2 is provided with racks, the racks are meshed with the gears, and one side of the two gears located on one side of the mounting seat is provided with a winding shaft, and the end of the toothed belt away from the vertical fixing plate is provided with a connecting belt, and the connecting belt is wound around the outside of the winding shaft.

[0005] The lengths of the fixing bars 1 and 2 are the same, the distance between the two fixing bars 2 is the same as the distance between the two fixing bars 1, and the two fixing bars 1 are parallel to each other, and the two fixing bars 2 are parallel to each other.

[0006] Wherein, an empty slot is provided inside the fixing strip 1, and the toothed belt is slidably connected inside the empty slot.

[0007] Wherein, a plurality of connecting slots are arranged on the inner side of the vertical fixing plate, and the toothed belt is slidably connected to the inner side of the connecting slots.

[0008] Wherein, the rack is perpendicular to the second fixing bar, and the two racks are symmetrical to each other.

[0009] The beneficial effect of the utility model is that through the linkage between the fixing strip one and the fixing strip two, the two sides of the valve cover can be squeezed downward synchronously during installation, so that the two sides of the gasket located between the mounting seat and the valve cover are simultaneously subjected to the downward squeezing force of the valve cover, which is beneficial to making the gasket more evenly stressed when installing the first screw, avoiding the situation in which the uneven thickness of the gasket affects the sealing due to uneven force when installing the first screw, and is beneficial to ensuring the sealing between the valve cover and the mounting seat.

[0010] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0012] Figure 2 For this utility model Figure 1 A magnified view of part A in FIG.

[0013] Figure 3 For this utility model Figure 1 A magnified view of part B in FIG.

[0014] Figure 4 It is a side view structural schematic diagram of the utility model;

[0015] Figure 5 It is a schematic diagram of the top view of the mounting seat in the utility model;

[0016] Figure 6 For this utility model Figure 5 The enlarged view of the C part in FIG.

[0017] Figure 7 For this utility model Figure 6 The enlarged view of the D part in FIG.

[0018] In the figure: 1. valve body; 2. mounting seat; 21. fixing strip 1; 211. empty slot; 212. toothed belt; 213. connecting belt; 22. fixing block; 221. connecting shaft; 222. gear; 223. winding shaft; 23. vertical fixing plate; 231. connecting slot; 3. valve cover; 31. fixing strip 2; 311. rack. DETAILED DESCRIPTION

[0019] See also Figure 1-Figure 7The utility model provides the following technical solution: it includes a valve body 1, characterized in that: a mounting seat 2 is provided on the top of the valve body 1, a valve cover 3 is detachably connected to the top of the mounting seat 2, two fixing strips 21 are fixedly connected to the bottom of the mounting seat 2, a toothed belt 212 is slidably connected inside the fixing strip 21, fixing blocks 22 are fixedly connected to both sides of the mounting seat 2, a connecting shaft 221 is provided on the inner side of the fixing block 22, gears 222 are rotatably connected to both ends of the connecting shaft 221, and a vertical gear 222 is provided on the top of one end of the fixing strip 21 A straight fixed plate 23, a toothed belt 212 is slidably connected to the inner side of the vertical fixed plate 23, the toothed belt 212 is meshedly connected to the gear 222, two fixed strips 231 are fixedly connected to the top of the valve cover 3, racks 311 are provided at the bottom of both ends of the fixed strips 231, the racks 311 are meshedly connected to the gear 222, a winding shaft 223 is provided on one side of the two gears 222 located on one side of the mounting seat 2, a connecting belt 213 is provided at one end of the toothed belt 212 away from the vertical fixed plate 23, and the connecting belt 213 is wound around the outside of the winding shaft 223.

[0020] In the present embodiment: it includes a valve body 1, which is a device for controlling the flow of fluids such as liquids, gases, steam, etc., and can be installed on a pipeline to open, close, adjust or control the flow rate and flow direction of the fluid. A mounting seat 2 is provided on the top of the valve body 1, and a plurality of connecting holes are provided on the mounting seat 2. A valve cover 3 is detachably connected to the top of the mounting seat 2. The valve cover 3 is an important component of the valve, usually used to cover and seal the opening part of the valve, and a plurality of connecting holes are also provided on the valve cover 3. Two fixing strips 21 are fixedly connected to the bottom of the mounting seat 2. The positions of the two fixing strips 21 are opposite. A toothed belt 212 is slidably connected to the inside of the fixing strip 21. One end of the toothed belt 212 is located at the fixing strip 21. The outside is bent upward, and fixed blocks 22 are fixedly connected to both sides of the mounting seat 2. The two fixed blocks 22 are symmetrical to each other. A connecting shaft 221 is provided on the inner side of the fixed block 22. The connecting shaft 221 is fixedly connected to the fixed block 22, and the connecting shaft 221 is perpendicular to the fixed bar 1 21. Gears 222 are rotatably connected at both ends of the connecting shaft 221. The gear 222 is located above the fixed bar 1 21. A vertical fixing plate 23 is provided on the top of one end of the fixed bar 1 21. The vertical fixing plate 23 is fixedly connected to the fixed bar 1 21. The toothed belt 212 is slidably connected to the inner side of the vertical fixing plate 23, and the toothed belt 212 is supported by the vertical fixing plate 23. The toothed belt 212 is in a bent state, and the toothed belt 212 is meshed and connected with the gear 222. When the gear 222 rotates, The toothed belt 212 can be driven to move. Two fixing bars 231 are fixedly connected to the top of the valve cover 3. The positions of the two fixing bars 231 are opposite to each other. Racks 311 are provided at the bottom of both ends of the fixing bars 231. The racks 311 are fixedly connected to the fixing bars 231, and the tooth blocks of the racks 311 are located on the outside. The racks 311 are meshed with the gears 222. When the valve cover 3 moves downward, the gears 222 can be driven to rotate through the meshing of the racks 311 and the gears 222, thereby driving the toothed belt 212 to move upward. A winding shaft 223 is provided on one side of the two gears 222 located on one side of the mounting seat 2. The winding shaft 223 is fixedly connected to the gears 222. The winding shaft 223 rotates synchronously with the gears 222, and the winding shaft 223 is located on the mounting seat 2 away from the vertical. On one side of the straight fixed plate 23, a connecting belt 213 is provided at one end of the toothed belt 212 away from the vertical fixed plate 23, and the connecting belt 213 is wound around the outside of the winding shaft 223. When the gear 222 rotates to drive the toothed belt 212 to move upward, the toothed belt 212 will pull the connecting belt 213, so that the winding shaft 223 and the gear 222 rotate. The rack 311 on the same side of the connecting belt 213 is longer than the other rack 311. Therefore, when the short rack 311 is close to the gear 222 but not in contact, the long rack 311 will first mesh with the gear 222. Therefore, when the valve cover 3 descends, the short rack 311 meshes with the gear 222. Through the linkage of the gear 222, the toothed belt 212, the connecting belt 213 and the connecting belt 213,It can drive another gear 222 to rotate and apply downward force to the long rack 311, so that both ends of the second fixing strip 31 are subjected to the same downward force. Therefore, when the valve cover 3 is installed by screws, by aligning the second fixing strip 31 with the first fixing strip 21 and first installing the screw hole located between the two second fixing strips 31 and on the same side as the short rack 311, the other side of the valve cover 3 can be pressed downward synchronously, so that both sides of the gasket between the mounting seat 2 and the valve cover 3 are simultaneously subjected to the downward pressing force of the valve cover 3, which is conducive to making the gasket more evenly stressed when installing the first screw, avoiding the situation where the uneven thickness of the gasket affects the sealing due to uneven stress when installing the first screw, and is conducive to ensuring the sealing between the valve cover 3 and the mounting seat 2.

[0021] The lengths of the fixing strip 1 21 and the fixing strip 2 31 are the same, the distance between the two fixing strips 2 31 is the same as the distance between the two fixing strips 1 21 , and the two fixing strips 1 21 are parallel to each other, and the two fixing strips 2 31 are parallel to each other; by adjusting the position of the valve cover 3, the fixing strip 2 31 can be vertically aligned with the fixing strip 1 21, so that the rack 311 and the gear 222 can be meshed.

[0022] An empty slot 211 is formed inside the fixing strip 21 , and the toothed belt 212 is slidably connected inside the empty slot 211 ; when the toothed belt 212 is pulled by the gear 222 , the toothed belt 212 will slide inside the empty slot 211 .

[0023] A plurality of connecting slots 231 are provided on the inner side of the vertical fixing plate 23 , and the toothed belt 212 is slidably connected to the inner side of the connecting slots 231 ; the toothed belt 212 can be limited by the connecting slots 231 , so that the toothed belt 212 can slide up and down on the inner side of the vertical fixing plate 23 .

[0024] The rack 311 is perpendicular to the second fixing bar 31 , and the two racks 311 are symmetrical to each other; when the valve cover 3 moves downward, the rack 311 will also perform a linear motion downward.

[0025] The working principle and use process of the utility model are as follows: when installing the valve cover 3, it is first necessary to align the fixing strip 21 with the fixing strip 1 21, and the rack 311 on the same side of the connecting strip 213 is longer than the other rack 311. Therefore, when the short rack 311 is close to the gear 222 but not in contact with it, the long rack 311 will first mesh with the gear 222. Therefore, when the valve cover 3 is lowered, the short rack 311 meshes with the gear 222, which can drive the gear 222 to rotate, thereby driving the toothed belt 212 to move upward, and the toothed belt 212 will pull the connecting strip 213, so that the reel 223 and the gear 222 on the other side rotate to apply a downward force to the long rack 311, so that the two ends of the fixing strip 213 are subjected to the same downward force, which is conducive to making the gasket more evenly stressed when installing the first screw.

Claims

1. A valve bonnet structure, comprising a valve body (1), characterized in that: A mounting seat (2) is provided at the top of the valve body (1), a valve cover (3) is detachably connected to the top of the mounting seat (2), two fixing strips (21) are fixedly connected to the bottom of the mounting seat (2), a toothed belt (212) is slidably connected to the inside of the fixing strip (21), fixing blocks (22) are fixedly connected to the two sides of the mounting seat (2), a connecting shaft (221) is provided on the inner side of the fixing block (22), gears (222) are rotatably connected to the two ends of the connecting shaft (221), a vertical fixing plate (23) is provided at the top of one end of the fixing strip (21), the toothed belt (212) is rotatably connected to the vertical fixing plate (23), and the toothed belt (212) is rotatably connected to the vertical fixing plate (23). The inner side of the plate (23) is slidably connected, the toothed belt (212) is meshingly connected with the gear (222), the top of the valve cover (3) is fixedly connected with two fixing strips (31), the bottoms of both ends of the fixing strips (31) are provided with racks (311), the racks (311) are meshingly connected with the gear (222), a winding shaft (223) is provided on one side of the two gears (222) located on one side of the mounting seat (2), and a connecting belt (213) is provided at one end of the toothed belt (212) away from the vertical fixing plate (23), and the connecting belt (213) is wound around the outside of the winding shaft (223).

2. A valve cover structure according to claim 1, characterized in that: The lengths of the fixing strip 1 (21) and the fixing strip 2 (31) are the same, the distance between the two fixing strips 2 (31) is the same as the distance between the two fixing strips 1 (21), and the two fixing strips 1 (21) are parallel to each other, and the two fixing strips 2 (31) are parallel to each other.

3. A valve cover structure according to claim 2, characterized in that: An empty slot (211) is provided inside the fixing strip (21), and the toothed belt (212) is slidably connected inside the empty slot (211).

4. A valve cover structure according to claim 3, characterized in that: A plurality of engagement slots (231) are provided on the inner side of the vertical fixing plate (23), and the toothed belt (212) is slidably connected to the inner side of the engagement slots (231).

5. A valve cover structure according to claim 4, characterized in that: The rack (311) is perpendicular to the second fixing bar (31), and the two racks (311) are symmetrical to each other.

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