Electro-hydraulic gate valve

Abstract

The utility model provides an electro-hydraulic gate valve, belongs to the field of gate valves, and aims to solve the problem that an existing electro-hydraulic gate valve cannot be conveniently and stably disassembled and overhauled. The electro-hydraulic gate valve comprises a valve body, a second connecting plate, a first sealing frame and a second sealing frame, and the first connecting plate is fixedly welded to the top end of the valve body; a positioning block is welded and fixed to the top end face of the first connecting plate, a first spring is welded and fixed in the positioning block, and a check block is welded and fixed to the other end of the first spring. Through cooperation of the positioning block and the check block, clamping mounting and dismounting separation between the valve deck and the valve body can be conveniently completed, and through combination of a limiting block and a limiting groove, convenient and stable clamping mounting and dismounting separation work can be conducted on an electric hydraulic rod on the mounting plate; and therefore, the overall disassembly and clamping installation work of the electro-hydraulic gate valve can be conveniently and stably completed, and convenient and stable overhaul and maintenance or single replacement work of parts can be conducted on the electro-hydraulic gate valve.

Description

Technical Field

[0001] The utility model relates to the field of gate valves, in particular to an electro-hydraulic gate valve. Background Art

[0002] The electro-hydraulic gate valve is a common industrial valve, mainly used for switching fluids in pipelines. It can fully open or completely close the fluid channel. Its main features are simple structure, good sealing and small fluid resistance. In general, the electro-hydraulic gate valve is a reliable and common type of industrial valve, suitable for a variety of fluid control needs.

[0003] However, the existing electro-hydraulic gate valves have some problems in the actual working process. For example, the intelligent electro-hydraulic gate valve with publication number CN205278507U can sense the strong magnet through the Hall sensor and transmit the sensing signal to the remote control console to realize intelligent control and remote control during the working process. However, after working for a long time, it is not possible to perform convenient and stable disassembly and maintenance and individual replacement of parts, which leads to a short service life of the electro-hydraulic gate valve; and the existing electro-hydraulic gate valve cannot perform further sealing and protection work on the flange connection between the gate valve and the pipeline during the actual working process. Therefore, particles such as soil and dust in the external environment can easily enter the flange connection and affect the normal operation of the gate valve. Therefore, we make improvements on this and propose an electro-hydraulic gate valve. Utility Model Content

[0004] The purpose of the utility model is to address the problems that the existing electro-hydraulic gate valve cannot be disassembled and repaired conveniently and stably, and the individual replacement of parts cannot be carried out, and the flange connection between the gate valve and the pipeline cannot be further sealed and protected.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] Electro-hydraulic gate valve is used to improve the above problems.

[0007] The specific application is as follows:

[0008] The valve body comprises a valve body, a second connecting plate, a first sealing frame and a second sealing frame, the top end of the valve body is welded and fixed with a first connecting plate, the top end surface of the first connecting plate is welded and fixed with a positioning block, a first spring is welded and fixed in the positioning block, a stopper is welded and fixed at the other end of the first spring, the stopper is limitedly slidably connected in the positioning block, a positioning groove is penetrated through the second connecting plate, the positioning block is snap-connected in the positioning groove, a valve cover is welded and fixed on the top end surface of the second connecting plate, a groove is provided on the top of the valve cover, a limiting block is welded and fixed on the inner wall of the groove, the A mounting plate is provided in the groove, a limiting groove is provided at the side end of the mounting plate, the limiting block is snap-connected in the limiting groove, an electric hydraulic rod is fixedly installed on the bottom end surface of the mounting plate, a connecting cable is connected to the top of the electric hydraulic rod, a gate plate is welded and fixed to the bottom end of the electric hydraulic rod, the gate plate is limitedly slidably connected in the valve body, a fixing pipe is welded and fixed to the bottom side end of the valve body, a connecting pipe is flange-connected to the fixing pipe, a rubber plate is fixedly connected in the first sealing frame and the second sealing frame, and a rubber airbag is fixedly connected in the first sealing frame and the second sealing frame.

[0009] As a preferred technical solution of the present application, the top end surface of the first connecting plate is fitted with the bottom end surface of the second connecting plate, the second connecting plate is in a semicircular shape, the second connecting plates are symmetrically distributed on both sides of the top of the first connecting plate, the second connecting plates correspond one-to-one with the positioning groove and the valve cover respectively, the first spring is symmetrically distributed on both sides of the positioning block, the first spring corresponds one-to-one with the stop block, and the end cross-section of the stop block is a right-angled trapezoid.

[0010] As a preferred technical solution of the present application, the groove is semicircular, the inner wall of the groove is in contact with the side end surface of the mounting plate, and the groove corresponds one-to-one with the limiting slot through the limiting block.

[0011] As a preferred technical solution of the present application, the first sealing frame and the second sealing frame are both semi-circular in shape, the diameter of the first sealing frame is equal to the diameter of the second sealing frame, the diameter of the first sealing frame is larger than the diameter of the fixed tube, the rubber plate and the rubber airbag are both semi-circular in shape, the rubber airbags are symmetrically distributed on both sides of the first sealing frame and on both sides of the second sealing frame, and the rubber plates are symmetrically distributed on both sides of the rubber airbag.

[0012] As a preferred technical solution of the present application, a connecting frame is welded and fixed on the first sealing frame, a second spring is welded and fixed on the side end of the connecting frame, a clamping rod is welded and fixed on the other end of the second spring, the clamping rod is limitedly and slidably connected in the connecting frame, a fixing block is welded and fixed on the second sealing frame, the fixing block is clamped and connected in the connecting frame, a clamping groove is provided on the side end of the fixing block, the end of the clamping rod is clamped and connected in the clamping groove, the connecting frames are symmetrically distributed in the middle parts of both sides of the first sealing frame, and the connecting frames correspond one-to-one to the clamping rod and the fixing blocks respectively.

[0013] As a preferred technical solution of the present application, magnetic frames are fixedly connected inside the first sealing frame and the second sealing frame, a connecting mesh frame is arranged inside the magnetic frame, the connecting mesh frame and the magnetic frame are fixed by magnetic adsorption, the inner wall of the magnetic frame is in contact with the outer wall of the connecting mesh frame, and the magnetic frames are symmetrically distributed on both sides of the first sealing frame and both sides of the second sealing frame.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] In the scheme of this application:

[0016] 1. Through the cooperation of the positioning block and the stopper, the valve cover and the valve body can be easily installed and disassembled. The electric hydraulic rod on the mounting plate can be easily and stably installed and disassembled by combining the limit block and the limit groove, so that the overall disassembly and installation of the electro-hydraulic gate valve can be easily and stably completed, so that the electro-hydraulic gate valve can be easily and stably repaired and maintained or the individual replacement of parts can be carried out, which effectively improves the service life of the electro-hydraulic gate valve and reduces the maintenance cost of the electro-hydraulic gate valve.

[0017] 2. Through the cooperation of the provided clamping rod and the fixed block, the first sealing frame and the second sealing frame can be conveniently and stably engaged and spliced ​​and disassembled and separated. By engaging and splicing the first sealing frame and the second sealing frame, the rubber airbag and the rubber plates on both sides can be used to automatically and efficiently seal and protect the flange connection of the fixed pipe and the connecting pipe, thereby preventing particles such as dirt and dust from entering the flange connection, slowing down the corrosion rate of metal parts, thereby extending the service life of the electro-hydraulic gate valve, and further improving the sealing performance of the flange, thereby increasing the stability and safety of the electro-hydraulic gate valve;

[0018] 3. The connecting mesh frame can be used to hold the desiccant, and the desiccant in the connecting mesh frame can be used to continuously and stably remove moisture and dry the flange connection between the fixed pipe and the connecting pipe, thereby further avoiding rust at the flange connection, thereby further improving the service life and safety of the electro-hydraulic gate valve. In addition, the magnetic properties of the magnetic frame can be used to conveniently disassemble and stably install the connecting mesh frame, so that the desiccant in the connecting mesh frame can be conveniently and stably replaced regularly, increasing the diversity and stability of the use of the electro-hydraulic gate valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the overall three-dimensional structure of the electro-hydraulic gate valve provided in this application;

[0020] Figure 2 This is a schematic diagram of the overall main structure of the electro-hydraulic gate valve provided in this application;

[0021] Figure 3 A schematic diagram of the main cross-sectional structure of the valve body of the electro-hydraulic gate valve provided in this application;

[0022] Figure 4 The electro-hydraulic gate valve provided for this application Figure 1 The enlarged structural diagram at A in the middle;

[0023] Figure 5 A schematic diagram of the side cross-sectional structure of the positioning block of the electro-hydraulic gate valve provided in this application;

[0024] Figure 6 This is a schematic diagram of the main cross-sectional structure of the first sealing frame of the electro-hydraulic gate valve provided in the present application;

[0025] Figure 7 A schematic diagram of the side structure of the first sealing frame of the electro-hydraulic gate valve provided in the present application;

[0026] Figure 8 A schematic diagram of the side cross-sectional structure of the connection frame of the electro-hydraulic gate valve provided in this application;

[0027] Fig. 9 A schematic diagram of the connection structure between the magnetic frame and the connecting mesh frame of the electro-hydraulic gate valve provided in this application.

[0028] Markings in the figure: 1. valve body; 2. first connecting plate; 3. positioning block; 4. first spring; 5. stopper; 6. second connecting plate; 7. positioning groove; 8. valve cover; 9. groove; 10. limit block; 11. mounting plate; 12. limit groove; 13. connecting cable; 14. electric hydraulic rod; 15. gate; 16. fixing pipe; 17. connecting pipe; 18. first sealing frame; 19. second sealing frame; 20. connecting frame; 21. second spring; 22. clamping rod; 23. fixing block; 24. clamping groove; 25. rubber plate; 26. rubber airbag; 27. magnetic frame; 28. connecting mesh frame. DETAILED DESCRIPTION

[0029] To make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments.

[0030] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the present invention to be protected, but merely represents some embodiments of the present invention. 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.

[0031] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0033] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "upper", "lower", etc. is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product is usually placed when in use, or the orientation or position relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0034] Embodiment 1:

[0035] like Figure 1-Figure 7As shown, this embodiment proposes an electro-hydraulic gate valve, including a valve body 1, a second connecting plate 6, a first sealing frame 18 and a second sealing frame 19, a first connecting plate 2 is welded and fixed to the top end of the valve body 1, a positioning block 3 is welded and fixed to the top end surface of the first connecting plate 2, a first spring 4 is welded and fixed in the positioning block 3, a stopper 5 is welded and fixed to the other end of the first spring 4, the stopper 5 is limitedly slidably connected in the positioning block 3, a positioning groove 7 is penetrated through the second connecting plate 6, the positioning block 3 is snap-connected in the positioning groove 7, a valve cover 8 is welded and fixed to the top end surface of the second connecting plate 6, a groove 9 is opened on the top of the valve cover 8, a limiting block 10 is welded and fixed to the inner wall of the groove 9, and the groove 9 is provided with a groove 9. A mounting plate 11 is provided in the groove 9, and a limiting groove 12 is provided at the side end of the mounting plate 11, and a limiting block 10 is snap-connected in the limiting groove 12, and an electric hydraulic rod 14 is fixedly installed on the bottom end surface of the mounting plate 11, and a connecting cable 13 is connected to the top of the electric hydraulic rod 14, and a gate plate 15 is welded and fixed to the bottom end of the electric hydraulic rod 14, and the gate plate 15 is limitedly slidably connected in the valve body 1, and a fixing pipe 16 is welded and fixed to the bottom side end of the valve body 1, and a connecting pipe 17 is flange-connected on the fixing pipe 16, a rubber plate 25 is fixedly connected in the first sealing frame 18 and the second sealing frame 19, and a rubber airbag 26 is fixedly connected in the first sealing frame 18 and the second sealing frame 19.

[0036] Embodiment 2:

[0037] The solution in Example 1 is further introduced below in combination with a specific working method, as described below:

[0038] like Figure 1-Figure 5 As shown, as a preferred embodiment, on the basis of the above-mentioned manner, further, the top end surface of the first connecting plate 2 is fitted with the bottom end surface of the second connecting plate 6, the second connecting plate 6 is in a semicircular ring shape, the second connecting plates 6 are symmetrically distributed on both sides of the top of the first connecting plate 2, the second connecting plates 6 correspond to the positioning grooves 7 and the valve cover 8 one by one, the first springs 4 are symmetrically distributed on both sides of the interior of the positioning block 3, the first springs 4 correspond to the stoppers 5 one by one, the end cross-section of the stoppers 5 is a right-angled trapezoid, the groove 9 is semicircular, and the inner wall of the groove 9 is aligned with the inner wall of the mounting plate 11. The side end surfaces are fitted together, and the groove 9 corresponds one-to-one with the limiting groove 12 through the limiting block 10. By utilizing the cooperation of the positioning block 3 and the stopper 5, the valve cover 8 and the valve body 1 can be conveniently engaged, installed, and disassembled. Combined with the limiting block 10 and the limiting groove 12, the electric hydraulic rod 14 on the mounting plate 11 can be conveniently and stably engaged, installed, and disassembled, and then the overall disassembly and engagement installation of the electro-hydraulic gate valve can be conveniently and stably completed, so that the electro-hydraulic gate valve can be conveniently and stably inspected and maintained or individual parts replaced.

[0039] like Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, as a preferred embodiment, on the basis of the above-mentioned manner, further, the first sealing frame 18 and the second sealing frame 19 are both semi-circular, the diameter of the first sealing frame 18 is equal to the diameter of the second sealing frame 19, the diameter of the first sealing frame 18 is larger than the diameter of the fixed tube 16, the rubber plate 25 and the rubber airbag 26 are both semi-circular, the rubber airbags 26 are symmetrically distributed on both sides of the first sealing frame 18 and the second sealing frame 19, the rubber plates 25 are symmetrically distributed on both sides of the rubber airbags 26, and the first sealing frame 18 and the second sealing frame 19 are spliced ​​and connected by snapping together, and the rubber airbags 26 and the rubber plates 25 on both sides are matched, so that the flange connection between the fixed tube 16 and the connecting tube 17 can be automatically and efficiently sealed and protected.

[0040] like Figure 7 and Figure 8 As shown, as a preferred embodiment, on the basis of the above method, further, a connecting frame 20 is welded and fixed on the first sealing frame 18, a second spring 21 is welded and fixed on the side end of the connecting frame 20, a clamping rod 22 is welded and fixed on the other end of the second spring 21, the clamping rod 22 is limitedly slidably connected in the connecting frame 20, a fixing block 23 is welded and fixed on the second sealing frame 19, the fixing block 23 is snap-connected in the connecting frame 20, a clamping groove 24 is provided on the side end of the fixing block 23, the end of the clamping rod 22 is snap-connected in the clamping groove 24, the connecting frames 20 are symmetrically distributed in the middle parts of both sides of the first sealing frame 18, the connecting frames 20 correspond to the clamping rod 22 and the fixing block 23 one by one, respectively, and the cooperation of the clamping rod 22 and the fixing block 23 can facilitate and stably engage, splice, disassemble and separate the first sealing frame 18 and the second sealing frame 19.

[0041] like Figure 6 and Fig. 9 As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, a magnetic frame 27 is fixedly connected inside the first sealing frame 18 and the second sealing frame 19, a connecting mesh frame 28 is arranged inside the magnetic frame 27, the connecting mesh frame 28 and the magnetic frame 27 are fixed by magnetic adsorption, the inner wall of the magnetic frame 27 fits with the outer wall of the connecting mesh frame 28, the magnetic frames 27 are symmetrically distributed on both sides of the inside of the first sealing frame 18 and the inside of the second sealing frame 19, the connecting mesh frame 28 can be used to hold the desiccant, the desiccant in the connecting mesh frame 28 can be used to perform continuous and stable dehumidification and drying treatment on the flange connection between the fixed pipe 16 and the connecting pipe 17, and the magnetism of the magnetic frame 27 can be used to conveniently disassemble and stably install the connecting mesh frame 28, so that the desiccant in the connecting mesh frame 28 can be conveniently and stably replaced regularly.

[0042] Specifically, when the electro-hydraulic gate valve is in use: first, when the electro-hydraulic gate valve starts to work, the staff can splice the two valve covers 8 with each other, and by utilizing the splicing of the two valve covers 8, the limit block 10 in the groove 9 at the top of the valve cover 8 can be stably inserted into the limit groove 12 at the side end of the mounting plate 11. At this time, by utilizing the splicing of the two valve covers 8, the electric hydraulic rod 14 can be conveniently and stably snap-fitted and installed through the mounting plate 11. After the two valve covers 8 are spliced ​​with each other, the corresponding second connecting plate 6 is also spliced. Then the staff can place the spliced ​​second connecting plate 6 on the first connecting plate 2 at the top of the valve body 1. During the placement of the second connecting plate 6, the positioning groove 7 on the second connecting plate 6 can be stably inserted into the positioning block 3. During the placement of the plate 6, the second connecting plate 6 first contacts the inclined surface at the end of the stopper 5. Therefore, when the second connecting plate 6 moves downward, the stopper 5 can be pushed by the inclined surface at the end of the stopper 5 to automatically move toward the inside of the positioning block 3 until the second connecting plate 6 drives the positioning groove 7 to move below the stopper 5. At this time, under the elastic action of the first spring 4, the stopper 5 can be driven to automatically move outward, and the positioning block 3 and the positioning groove 7 can be used to conveniently complete the clamping installation between the valve cover 8 and the valve body 1. In combination with the limit block 10 and the limit groove 12, the electric hydraulic rod 14 on the mounting plate 11 can be conveniently and stably clamped and installed. At the same time, the electric hydraulic rod 14 can drive the gate plate 15 at the bottom to be stably inserted into the valve body 1, thereby ensuring the stability of the subsequent working state.

[0043] During the operation of the electro-hydraulic gate valve, the staff can splice the first sealing frame 18 and the second sealing frame 19 to each other, and cover them at the flange connection between the fixed pipe 16 and the connecting pipe 17. Before the first sealing frame 18 and the second sealing frame 19 are spliced ​​to each other, the staff needs to pull the clamping rod 22 on the connecting frame 20 outward in advance. When the first sealing frame 18 and the second sealing frame 19 are spliced ​​to each other, the fixing block 23 on the second sealing frame 19 can be stably engaged in the connecting frame 20 on the first sealing frame 18. Then the staff can release the clamping rod 22 on the connecting frame 20. At this time, under the elastic action of the second spring 21, the clamping rod 22 can be driven to automatically engage in the clamping groove 24 on the fixing block 23, so that the first sealing frame 18 and the second sealing frame 19 can be conveniently completed. The two sealing frames 19 are engaged and installed. At this time, the rubber airbags 26 on both sides of the first sealing frame 18 and the second sealing frame 19 and the rubber plates 25 on both sides can be used to automatically and efficiently seal and protect the flange connection between the fixed pipe 16 and the connecting pipe 17, thereby preventing particles such as soil and dust from entering the flange connection, slowing down the corrosion rate of metal parts, thereby extending the service life of the electro-hydraulic gate valve, and further improving the sealing performance of the flange. At the same time, the desiccant in the connecting mesh frame 28 can be used to continuously and stably remove moisture and dry the flange connection between the fixed pipe 16 and the connecting pipe 17, thereby further preventing rust from occurring at the flange connection, thereby further improving the service life and safety of the electro-hydraulic gate valve.

[0044] If the electro-hydraulic gate valve needs to be repaired and maintained, the staff only needs to push the stopper 5 to move toward the inside of the positioning block 3 so that it will not block the second connecting plate 6. Then the staff can pull the valve cover 8 upward to conveniently complete the disassembly and separation between the valve cover 8 and the valve body 1. Then the staff can separate the two valve covers 8. At this time, the limit block 10 on the groove 9 is also separated from the limit groove 12 on the mounting plate 11. At this time, the disassembly work of the electric hydraulic rod 14 is conveniently completed, so that the overall disassembly work of the electro-hydraulic gate valve can be conveniently completed, so that the electro-hydraulic gate valve can be conveniently and stably repaired and maintained or the individual replacement of parts can be carried out;

[0045] In addition, the staff can pull the latch rod 22 on the connecting frame 20 outward until the latch rod 22 moves out of the latch groove 24 on the fixing block 23, thereby conveniently completing the disassembly and separation of the first sealing frame 18 and the second sealing frame 19, thereby ensuring the stability and convenience of subsequent inspection and maintenance of the flange connection between the fixing pipe 16 and the connecting pipe 17. In addition, the staff can use the magnetism of the magnetic frame 27 to conveniently disassemble and stably install the connecting mesh frame 28, thereby conveniently and stably replacing the desiccant in the connecting mesh frame 28 on a regular basis.

[0046] The above embodiments are only used to illustrate the utility model but not to limit the technical solutions described in the utility model. Although the present invention has been described in detail with reference to the above embodiments, the utility model is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the utility model; and all technical solutions and improvements that do not deviate from the spirit and scope of the utility model are included in the scope of the claims of the utility model.

Claims

1. An electro-hydraulic gate valve, comprising a valve body (1), a second connecting plate (6), a first sealing frame (18) and a second sealing frame (19), characterized in that: A first connecting plate (2) is welded and fixed to the top end of the valve body (1), a positioning block (3) is welded and fixed to the top end surface of the first connecting plate (2), a first spring (4) is welded and fixed inside the positioning block (3), a stopper (5) is welded and fixed to the other end of the first spring (4), the stopper (5) is limitedly slidably connected in the positioning block (3), a positioning groove (7) is provided through the second connecting plate (6), the positioning block (3) is snap-connected in the positioning groove (7), a valve cover (8) is welded and fixed to the top end surface of the second connecting plate (6), a groove (9) is provided on the top of the valve cover (8), a limiting block (10) is welded and fixed to the inner wall of the groove (9), a mounting plate (11) is provided in the groove (9), and the mounting plate (11) is provided with a A limit groove (12) is provided at the side end, the limit block (10) is snap-connected in the limit groove (12), an electric hydraulic rod (14) is fixedly mounted on the bottom end surface of the mounting plate (11), the top of the electric hydraulic rod (14) is connected to a connecting cable (13), a gate plate (15) is welded and fixed at the bottom end of the electric hydraulic rod (14), the gate plate (15) is limitedly slidably connected in the valve body (1), a fixing pipe (16) is welded and fixed at the bottom side end of the valve body (1), a connecting pipe (17) is flange-connected on the fixing pipe (16), a rubber plate (25) is fixedly connected in the first sealing frame (18) and the second sealing frame (19), and a rubber airbag (26) is fixedly connected in the first sealing frame (18) and the second sealing frame (19).

2. An electro-hydraulic gate valve according to claim 1, characterized in that: The top end surface of the first connecting plate (2) is in contact with the bottom end surface of the second connecting plate (6); the second connecting plate (6) is in a semicircular shape; the second connecting plates (6) are symmetrically distributed on both sides of the top of the first connecting plate (2); the second connecting plates (6) correspond one-to-one with the positioning groove (7) and the valve cover (8), respectively; the first spring (4) is symmetrically distributed on both sides of the interior of the positioning block (3); the first spring (4) corresponds one-to-one with the stop block (5); and the end cross section of the stop block (5) is in a right-angle trapezoidal shape.

3. The electro-hydraulic gate valve according to claim 1, characterized in that: The groove (9) is semicircular in shape, the inner wall of the groove (9) is in contact with the side end surface of the mounting plate (11), and the groove (9) corresponds one-to-one with the limiting groove (12) through the limiting block (10).

4. The electro-hydraulic gate valve according to claim 1, characterized in that: The first sealing frame (18) and the second sealing frame (19) are both semi-circular in shape, the diameter of the first sealing frame (18) is equal to the diameter of the second sealing frame (19), the diameter of the first sealing frame (18) is greater than the diameter of the fixed tube (16), the rubber plate (25) and the rubber airbag (26) are both semi-circular in shape, the rubber airbag (26) is symmetrically distributed on both sides of the first sealing frame (18) and the second sealing frame (19), and the rubber plate (25) is symmetrically distributed on both sides of the rubber airbag (26).

5. The electro-hydraulic gate valve according to claim 1, characterized in that: A connecting frame (20) is welded and fixed on the first sealing frame (18), a second spring (21) is welded and fixed on the side end of the connecting frame (20), a clamping rod (22) is welded and fixed on the other end of the second spring (21), the clamping rod (22) is limitedly slidably connected in the connecting frame (20), a fixing block (23) is welded and fixed on the second sealing frame (19), the fixing block (23) is snap-fitted and connected in the connecting frame (20), a slot (24) is provided on the side end of the fixing block (23), the end of the clamping rod (22) is snap-fitted and connected in the slot (24), the connecting frames (20) are symmetrically distributed in the middle parts of both sides of the first sealing frame (18), and the connecting frames (20) correspond one-to-one to the clamping rod (22) and the fixing block (23), respectively.

6. The electro-hydraulic gate valve according to claim 1, characterized in that: The first sealing frame (18) and the second sealing frame (19) are both fixedly connected with a magnetic frame (27), a connecting mesh frame (28) is arranged in the magnetic frame (27), the connecting mesh frame (28) and the magnetic frame (27) are fixed by magnetic adsorption, the inner wall of the magnetic frame (27) is in contact with the outer wall of the connecting mesh frame (28), and the magnetic frames (27) are symmetrically distributed on both sides of the first sealing frame (18) and on both sides of the second sealing frame (19).

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