A rack and pinion transmission gate valve

Abstract

The present invention discloses a gear rack transmission gate valve, comprising a valve plate body, the valve plate body comprising a first mounting portion and a second mounting portion, wherein an open slot is provided in the middle of the first mounting portion, and the open slot runs through the first mounting portion; a valve core assembly is also provided inside the valve plate body, and the valve core assembly comprises a drive frame, a sealing plate and a push rod; the drive frame comprises an upper mounting structure and a lower driving structure, and the mounting bracket is used to install the sealing plate; a driving tooth is provided on the lower driving structure; a driving device is also provided on the lower driving structure, and the driving device drives the valve core assembly through a gear shaft. The present invention solves the problem of the applicability of the slender gate valve under harsh installation space conditions. Through the transmission of the gear shaft and the driving tooth, the total length of the slender valve plate body is reduced by about one third, the valve structure is more compact, and the installation space requirement is smaller. The gear shaft and the driving tooth are closer to the center of the valve core assembly, and the movement of the valve core assembly is smoother.

Description

Technical Field

[0001] The invention belongs to the technical field of valve sealing, and in particular relates to a rack and pinion transmission plug-in valve. Background Art

[0002] The vacuum gate valve uses the actuator to drive the valve core assembly to rise and fall to open and close the valve. When the valve is closed, the sealing plate moves to the sealing position and stops moving, and the drive frame continues to move. The push rod connected between the sealing plate and the drive frame pushes the sealing plate away from the drive body and presses against the sealing surface of the valve body as the drive frame moves. When the push rod is horizontal, the clamping force reaches the maximum and the valve is completely closed. When the valve is opened, the drive frame is away from the sealing area, and the sealing plate moves backward with the drive body under the action of the push rod, leaving the sealing surface until the valve is fully opened.

[0003] The vacuum gate valve has the characteristics of large flow capacity, compact structure, small size, lightness and thinness. It is widely used in high-tech fields such as electronics, chemical industry, metallurgy, nuclear industry, aviation, aerospace, materials, biomedicine, atomic energy, and space exploration.

[0004] The gate valves currently used in the vacuum valve industry can be divided into manual, pneumatic and electric gate valves according to the driving mode. According to their own characteristics, they are widely used in various industries.

[0005] Depending on the position of the actuator relative to the valve body, the connection method between the actuator and the valve core is also different. When the actuator is above the valve body, the actuator and the valve core are directly connected. When the actuator is on the side of the valve body, the actuator and the valve core are connected by a four-link method. When the actuator is on the end face of the valve body, the actuator and the valve core are connected by a swing arm cam method.

[0006] When the interface of the rectangular plug valve is slender and the valve core is required to move along the long side. For example, the interface size is 200mmx1000mm, and the valve core is required to move along the 1000mm direction. The four-link connection method or the swing arm cam connection method between the actuator and the valve core cannot achieve the opening and closing of the valve. Although the direct connection method can solve the opening and closing of the valve, it will greatly increase the total length of the valve, which not only requires a larger installation space on site, but also because the valve structure is too long, the valve as a whole requires a higher structural strength; it increases the design difficulty, valve weight, and valve cost. Summary of the invention

[0007] The object of the present invention is to provide a gear rack transmission gate valve to solve the problem that in the prior art proposed in the background technology, the four-link connection method and the swing arm cam connection method cannot realize the opening and closing action of the valve, and the direct connection method will increase the total length of the valve, increase the design difficulty, the weight of the valve, and increase the cost of the valve.

[0008] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0009] A rack and pinion transmission gate valve comprises a valve plate body, the valve plate body comprises a first mounting portion and a second mounting portion, wherein the first mounting portion and the second mounting portion are both hollow inside, the first mounting portion and the second mounting portion are communicated with each other, and an open groove is provided in the middle of the first mounting portion, the open groove passes through the first mounting portion;

[0010] A valve core assembly is also arranged inside the valve plate body, and the valve core assembly includes a driving frame, a sealing plate and a push rod; wherein the driving frame includes an upper mounting structure and a lower driving structure, wherein the upper mounting structure includes a plurality of mounting brackets, and the mounting brackets are used to mount the sealing plate; a driving tooth is arranged on the lower driving structure; and the push rod is used to connect the sealing plate and the driving frame;

[0011] A driving device is also provided on the lower driving structure. A gear shaft matching the driving teeth is provided on the output shaft of the driving device. The driving teeth are meshed with the gear shaft. The driving device drives the valve core assembly via the gear shaft.

[0012] According to the above technical solution, a mounting platform is also provided on the driving frame, and the mounting platform is used to install a pulley, and the pulley is used for the sliding of the driving frame.

[0013] According to the above technical solution, four mounting platforms are provided, and the four mounting platforms are respectively provided at four ends of the driving frame.

[0014] According to the above technical solution, an auxiliary rotating wheel is arranged on the side of the sealing plate, and the auxiliary rotating wheel is used to assist the movement of the sealing plate.

[0015] According to the above technical solution, a sealing ring is arranged on the outer side of the sealing plate to increase the sealing effect.

[0016] According to the above technical solution, the push rod includes a connecting portion and a fixing seat, one end of the connecting portion is connected to the mounting bracket, and the other end of the connecting portion is connected to the fixing seat.

[0017] According to the above technical solution, the fixing seat is an H-shaped structure, and the fixing seat is fixedly installed on the sealing plate.

[0018] According to the above technical solution, the connection part includes two sets, namely connection part A and connection part B. Connection part A is arranged above the mounting bracket, and connection part B is arranged below the mounting bracket.

[0019] According to the above technical solution, there are 10-12 push rods.

[0020] According to the above technical solution, the driving device is a motor.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] Compared with the existing rectangular gate valve, the present invention solves the problem of the applicability of the slender gate valve under harsh installation space conditions without changing the product function, and enhances the application scope of this type of valve products. It is more suitable for occasions with extremely small installation space, and the specific beneficial effects are as follows:

[0023] (1) Through the transmission of the gear shaft and the driving gear, the total length of the slender valve plate body is reduced by about one third, the valve structure is more compact, and the installation space requirement is smaller.

[0024] (2) The gear shaft and the drive teeth are closer to the center of the valve core assembly, and the movement of the valve core assembly is smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a front view structural schematic diagram of the present invention;

[0026] Figure 2 It is a rear view structural schematic diagram of the present invention;

[0027] Figure 3 It is a schematic diagram of the structure of the valve core assembly of the present invention;

[0028] Figure 4 It is a schematic diagram of the top rod structure of the present invention;

[0029] Figure 5 It is a schematic diagram of the structure of the fixing seat of the present invention.

[0030] Markings in the figure: 1-valve plate body, 101-first mounting part, 102-second mounting part, 103-opening groove, 2-driving frame, 201-upper mounting structure, 202-lower driving structure, 203-mounting bracket, 204-driving tooth, 3-sealing plate, 4-top rod, 401-connecting part A, 402-connecting part B, 403-fixed seat, 404-rotating shaft, 405-first vertically mounted conductive plate, 406-second vertically mounted conductive plate, 407-connecting plate, 5-driving device, 6-gear shaft, 7-mounting table, 8-pulley, 9-auxiliary rotating wheel, 10-rotating wheel. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Embodiment 1

[0033] like Figure 1 , Figure 2 , Figure 3 As shown, a rack and pinion transmission gate valve comprises a valve plate body 1, wherein the valve plate body 1 comprises a first mounting portion 101 and a second mounting portion 102, wherein the first mounting portion 101 and the second mounting portion 102 are both hollow inside, the first mounting portion 101 and the second mounting portion 102 are communicated, and an opening groove 103 is provided in the middle of the first mounting portion, and the opening groove 103 passes through the first mounting portion 101;

[0034] The valve plate body 1 is also provided with a valve core assembly inside, and the valve core assembly includes a drive frame 2, a sealing plate 3 and a push rod 4; wherein the drive frame 2 includes an upper mounting structure 201 and a lower driving structure 202, wherein the upper mounting structure 201 includes a plurality of mounting brackets 203, and the mounting brackets 203 are used to mount the sealing plate 3; a driving tooth 204 is provided on the lower driving structure 202; and the push rod 4 is used to connect the sealing plate 3 and the drive frame 2;

[0035] A driving device 5 is also provided on the lower driving structure 202 . A gear shaft 6 cooperating with the driving teeth 204 is provided on the output shaft of the driving device 5 . The driving teeth 204 mesh with the gear shaft 6 . The driving device 5 drives the valve core assembly via the gear shaft 6 .

[0036] Furthermore, the mounting bracket 203 is provided with two, including a mounting bracket 203A and a mounting bracket 203B, and the top rod 4 is provided with two rows, the upper row is provided on the mounting bracket 203A, and the lower row is provided on the mounting bracket 203B.

[0037] Furthermore, a limit block is provided on the valve plate body 1 , and the limit block is used to limit the position of the sealing plate 3 .

[0038] Embodiment 2

[0039] This embodiment is a further refinement of the first embodiment. Figure 3 As shown, a mounting platform 7 is also provided on the driving frame 2 , and the mounting platform 7 is used to install a pulley 8 , and the pulley 8 is used for the sliding of the driving frame 2 .

[0040] There are four mounting platforms 7 , which are respectively arranged at four ends of the driving frame 2 .

[0041] Furthermore, the pulley 8 is used to slide on the inner wall of the bottom plate of the valve plate body 1, and the mounting platform 7 is at a certain distance (such as 3-5 mm) from the driving frame 2 to avoid friction between the driving frame 2 and the inner wall of the bottom plate of the valve plate body 1, so as not to affect the sealing effect.

[0042] Furthermore, an installation groove is provided below the lower driving structure 202, and the installation groove is used to install a rotating wheel 10. The rotating wheel 10 is in sliding contact with the inner walls of the two side walls of the valve plate body 1. The rotating wheel 10 is used to assist the movement of the driving frame 2 to prevent the driving frame 2 from rubbing against the side walls of the valve plate body 1 and affecting the movement of the valve core assembly.

[0043] Embodiment 3

[0044] This embodiment is a further refinement of the first embodiment. Figure 4 As shown, the push rod 4 includes a connecting portion and a fixing seat 403 , one end of the connecting portion is connected to the mounting bracket 203 , and the other end of the connecting portion is connected to the fixing seat 403 .

[0045] The fixing seat 403 is an H-shaped structure and is fixedly mounted on the sealing plate 3 .

[0046] The connection part includes two sets, namely the connection part A401 and the connection part B402 . The connection part A401 is arranged above the mounting bracket 203 , and the connection part B402 is arranged below the mounting bracket 203 .

[0047] The number of the top rods 4 is 10-12.

[0048] like Figure 4 , Figure 5As shown, further, the fixing seat 403 includes two vertical rods and a connecting plate 407, the two vertical rods are respectively a first vertically mounted conductive plate 405 and a second vertically mounted conductive plate 406; wherein, one end of the connecting portion A401 is arranged above the connecting plate 407, and one end of the connecting portion B402 is arranged below the connecting plate 407, and the connecting portion A401 and the connecting portion B402 clamp the connecting plate 407; and, rotating holes are arranged on the connecting portion A401, the connecting portion B402 and the connecting plate 407, and the rotating holes are used to install the rotating shaft 404, through which the connecting portion A401 and the connecting portion B402 can rotate around the rotating shaft 404 while keeping the connecting plate 407 clamped. Similarly, the other end of the connection part A401 is arranged above the mounting bracket 203, and the other end of the connection part B402 is arranged below the mounting bracket 203. The connection part A401 and the connection part B402 clamp the mounting bracket 203. Rotating holes are arranged between the connection part A401, the connection part B402 and the mounting bracket. The rotating holes are used to install the rotating shaft 404. Through the rotating shaft 404, the connection part A401 and the connection part B402 can rotate around the rotating shaft 404 while keeping the mounting bracket 203 clamped.

[0049] Furthermore, the first vertically mounted conductive plate 405 of the fixed seat 403 can limit the rotation of the connection part A401 and the connection part B402. When the connection part A401 and the connection part B402 rotate clockwise to a certain angle (such as 30°), they will contact the first vertically mounted conductive plate 405, which stops the rotation of the connection part A401 and the connection part B402 and drives the sealing plate 3 to move under the action of the driving device.

[0050] Furthermore, by connecting the mounting bracket 203 and the fixing seat 403 through the connecting part, the force bearing area of ​​the sealing plate can be increased through the H-shaped fixing seat 403. When the connecting rod transmits the force from the mounting bracket 203 to the fixing seat 403, the vertical rod A of the fixing seat 403 and the second vertically mounted conductive plate 406 make surface contact with the sealing plate, thereby increasing the force bearing area of ​​the sealing plate, making the force on the sealing plate more uniform, and the sealing plate is not easy to slide when moving, thereby improving the reliability of the seal.

[0051] Furthermore, the connection part A401 and the connection part B402 are connected by a rotating shaft 404, and the rotating shaft 404 is used for the simultaneous rotation of the connection part A401 and the connection part B402.

[0052] The working principle of the present invention is as follows: in the present invention, the gear shaft 6 driven by the driving device 5 cooperates with the driving teeth 204 (rack) on the driving frame 2 to complete the driving of the driving frame 2. At the same time, since the sealing plate 3 is connected to the driving frame 2 through the push rod 4, and the push rod 4 is rotatably connected to the driving frame 2 and the sealing plate 3, when the driving frame 2 moves, the push rod 4 is driven to move through the mounting bracket 203 on the driving frame 2, and the push rod 4 and the sealing plate 3 rotate. When the push rod 4 rotates to a certain angle (for example, 15°), it is blocked by the block, so that the push rod 4 and the sealing plate 3 no longer rotate relative to each other, but the push rod 4 drives the sealing plate 3 to move, thereby completing the opening or closing of the valve plate body 1.

[0053] Embodiment 4

[0054] This embodiment provides a specific working process.

[0055] Working process 1, valve plate body 1 is opened:

[0056] When the valve plate body 1 is in a closed state, the push rod 4 and the sealing plate 3 are perpendicular to each other. When the valve plate body 1 needs to be opened, the driving device 5 is started, and the driving device 5 rotates clockwise, driving the gear shaft 6 to rotate clockwise; the gear shaft 6 cooperates with the driving teeth 204 on the driving frame 2, driving the driving teeth 204 to move, thereby driving the driving frame 2 to move toward the second mounting portion 102. Under the action of the driving frame 2, the push rod 4 forms a certain angle (for example, 15°) with the sealing plate 3. Subsequently, under the action of the stopper, the push rod 4 no longer rotates, but the push rod 4 drives the sealing plate 3 to move toward the second mounting portion 102 together, so that it is away from the opening groove 103 of the first mounting portion 101, and the valve plate body 1 is opened.

[0057] Working process 2, valve plate body 1 is closed:

[0058] When the valve plate body 1 is in the open state, the push rod 4 and the sealing plate 3 form a certain angle (e.g., 15°). The driving device 5 rotates counterclockwise, and the driving device 5 drives the gear shaft 6 to rotate counterclockwise. The gear shaft 6 cooperates with the driving teeth 204 on the driving frame 2 to drive the driving teeth 204 to move, thereby driving the driving frame 2 to move toward the first mounting portion 101. When the sealing plate 3 reaches the position of the limit block on the valve plate body 1, the sealing plate 3 stops moving, and the driving frame 2 continues to move under the action of the driving device 5, and the mounting bracket 203 on the driving frame 2 continues to drive the connecting part A401 and the connecting part B402 on the push rod 4 to continue to move. Since the position of the sealing plate 3 has been fixed, when the push rod 4 continues to move toward the first mounting part 101, the sealing plate 3 will not move in the horizontal direction. At this time, the connecting part A401 and the connecting part B402 will rotate around the rotating shaft 404; during the rotation process, the connecting plate 407 connected to the connecting part A401 and the connecting part B402 is pushed, and the first vertical mounting conductive plate 405 and the second vertical mounting conductive plate 406 are pushed through the connecting plate 407, thereby completing the pushing of the sealing plate 3. The sealing plate 3 seals the opening groove 103.

[0059] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0060] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A rack and pinion drive gate valve, characterized in that: The valve plate body (1) comprises a first mounting portion (101) and a second mounting portion (102), wherein the first mounting portion (101) and the second mounting portion (102) are both hollow inside, the first mounting portion (101) and the second mounting portion (102) are connected, and an opening groove (103) is provided in the middle of the first mounting portion (101), and the opening groove (103) passes through the first mounting portion (101); A valve core assembly is also provided inside the valve plate body (1), and the valve core assembly comprises a drive frame (2), a sealing plate (3) and a push rod (4); wherein the drive frame (2) comprises an upper mounting structure (201) and a lower driving structure (202); wherein the upper mounting structure (201) comprises a plurality of mounting brackets (203), and the mounting brackets (203) are used to mount the sealing plate (3); a driving tooth (204) is provided on the lower driving structure (202); and the push rod (4) is used to connect the sealing plate (3) and the drive frame (2). ; The push rod (4) comprises a connecting portion and a fixing seat (403), one end of the connecting portion is connected to the mounting bracket (203), and the other end of the connecting portion is connected to the fixing seat (403); the fixing seat (403) is an H-shaped structure, and the fixing seat (403) is fixedly mounted on the sealing plate (3); the connecting portion comprises two sets, namely a connecting portion A (401) and a connecting portion B (402), the connecting portion A (401) is arranged above the mounting bracket (203), and the connecting portion B (402) is arranged below the mounting bracket (203); A driving device (5) is also provided on the lower driving structure (202); a gear shaft (6) cooperating with the driving teeth (204) is provided on the output shaft of the driving device (5); the driving teeth (204) mesh with the gear shaft (6); and the driving device (5) drives the valve core assembly via the gear shaft (6).

2. A rack and pinion drive gate valve according to claim 1, characterized in that: The driving frame (2) is also provided with a mounting platform (7), the mounting platform (7) being used to mount a pulley (8), and the pulley (8) being used to drive the frame (2) to slide.

3. A rack and pinion drive gate valve according to claim 2, characterized in that: Four mounting platforms (7) are provided, and the four mounting platforms (7) are respectively provided at four ends of the driving frame (2).

4. A rack and pinion drive gate valve according to claim 1, characterized in that: An auxiliary rotating wheel (9) is provided on the side of the sealing plate (3), and the auxiliary rotating wheel (9) is used to assist the sealing plate (3) in moving.

5. The rack and pinion drive gate valve according to claim 1, characterized in that: A sealing ring is provided on the outer side of the sealing plate (3), and the sealing effect is enhanced by the sealing ring.

6. The rack and pinion drive gate valve according to claim 1, characterized in that: The number of the top rods (4) is 10-12.

7. The rack and pinion drive gate valve according to claim 1, characterized in that: The driving device (5) is a motor.

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