A gate valve, a valve plate and a valve stem

Abstract

The present invention discloses a gate valve, a valve plate and a valve stem, and relates to the technical field of gate valves. A valve stem comprises a valve stem member, the outer wall of the valve stem member is slidably connected to a gate valve frame, the outer wall of the valve stem member is fixedly connected to a connecting disk, and a No. 1 moving component for controlling the movement of the connecting disk is installed between the connecting disk and the gate valve frame. The present invention sets a quick response structure, and the No. 2 moving component controls the movement of the moving frame to realize the energy storage of the No. 1 spring, so that rapid opening and closing can be completed later. The No. 1 limiting component limits the position of the moving frame, so that the No. 1 spring is in a ready-to-fire state, and the No. 1 limiting component cancels the restriction on the moving frame. At the same time, when the limiting device does not achieve any restriction, the connecting disk and the limiting device are moved synchronously, and the rapid movement of the valve stem member is completed. Rapid opening and closing is achieved through the No. 1 spring. It has the characteristics of fast response speed, which ensures the rapid opening and closing requirements of the pipeline usage scenario in an emergency.

Description

Technical Field

[0001] The present invention relates to the technical field of gate valves, in particular to a gate valve, a valve plate and a valve stem. Background Art

[0002] The gate valve is a valve device whose opening and closing part is the gate, and the gate is driven by the valve stem to do lifting and lowering movements. The movement direction of the gate is perpendicular to the direction of the fluid, and the gate valve is sealed by the contact between the valve seat and the gate.

[0003] For example, patent publication number CN110056665A, which is named as a gate valve with a swing-type fast opening and closing in the middle cavity, comprises a gate valve body, a gate valve cover, a driving valve stem and a gate valve middle cavity, and a gate valve seat is arranged above the gate valve body. The gate valve with a swing-type fast opening and closing in the middle cavity is provided with a first movable gate plate and a second movable gate plate for synchronous parallel swing opening and closing, which facilitates the rapid opening and closing of the device under the synchronous transmission of the connecting tooth groove, and the limit block of the movable connecting sleeve can facilitate the flexible limit of the device, thereby improving the practicality of the device.

[0004] The above invention still uses flexible transmission of connecting teeth and connecting gears in the process of realizing rapid opening and closing. The above invention realizes rapid opening and closing of the gate valve through a transmission mechanism, but its response speed may be affected by factors such as the length of the transmission path and the transmission efficiency. Due to the entire pipeline system in which the gate valve is located, and due to the different usage scenarios of the entire pipeline system, emergency situations may occur in some special places. At this time, the gate valve needs to be quickly and completely opened or quickly and completely closed. For this purpose, a gate valve, a valve plate and a valve stem are invented. Summary of the invention

[0005] The object of the present invention is to provide a gate valve, a valve plate and a valve stem to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a valve stem, comprising a valve stem member, the outer wall of the valve stem member is slidably connected to a gate valve frame, the outer wall of the valve stem member is fixedly connected to a connecting plate, a moving component for controlling the movement of the connecting plate is installed between the connecting plate and the gate valve frame, and the top and bottom ends of the gate valve frame are respectively fixedly connected to a quick response structure for realizing quick opening and closing;

[0007] The quick response structure includes a No. 1 spring, which is fixedly mounted on the gate valve frame, a mobile frame is fixedly connected to the No. 1 spring, a No. 2 mobile assembly for controlling the movement of the mobile frame is installed between the mobile frame and the gate valve frame, a mobile cylinder is slidably connected to the outer wall of the mobile frame, and a No. 2 spring is installed between the mobile cylinder and the mobile frame;

[0008] The gate valve frame is provided with a first limiting component for limiting the movement of the moving frame, the gate valve frame is provided with a second limiting component for limiting the movement of the moving cylinder, and a transmission component is provided between the valve stem and the quick response structure;

[0009] The transmission assembly includes a fixed plate, which is fixedly installed on the gate valve frame, and the interior of the fixed plate is rotatably connected to a main bevel wheel and a slave bevel wheel, the outer wall of the main bevel wheel meshes with the outer wall of the slave bevel wheel, the outer wall of the valve stem is slidably connected to a twill plate for meshing with the slave bevel wheel, a No. 3 spring is fixedly connected between the twill plate and the valve stem, a No. 2 twill block is slidably connected to the interior of the moving cylinder, an L-shaped piece is slidably connected to the outer wall of the valve stem, a No. 4 spring is fixedly connected between the L-shaped piece and the connecting plate, a slanted plate for limiting the movement of the twill plate is fixedly connected to one side of the L-shaped piece, and a No. 5 spring is fixedly connected between the No. 2 twill block and the moving cylinder.

[0010] Furthermore, the No. 1 moving component includes a guide rod, which is fixedly installed inside the gate valve frame, and a moving frame is slidably connected to the guide rod, and a No. 2 motor is fixedly connected to the moving frame, and a No. 2 threaded rod is fixedly connected to the output end of the No. 2 motor, and the outer wall of the No. 2 threaded rod is threadedly connected to one end of a connecting plate, and one end of the connecting plate is slidably connected to the guide rod, and a limiting device for limiting the movement of the moving frame on the guide rod is installed on the moving frame.

[0011] Furthermore, the No. 2 moving component includes a circular leakage cylinder, which is fixedly installed on the gate valve frame. The interior of the circular leakage cylinder is rotatably connected to a No. 1 threaded rod, and the circular leakage cylinder is fixedly connected to a No. 1 motor for controlling the rotation of the No. 1 threaded rod. The outer wall of the No. 1 threaded rod is threadedly connected to a moving block, and the interior of one end of the moving frame is slidably connected to the outer wall of the circular leakage cylinder.

[0012] Furthermore, the No. 2 limiting component includes a No. 2 telescopic part, which is fixedly installed on the gate valve frame, the telescopic end of the No. 2 telescopic part is fixedly connected to a No. 9 spring, the telescopic end of the No. 9 spring is fixedly connected to a No. 3 limiting block, the outer wall of the No. 3 limiting block is slidably connected to the gate valve frame, and the top of the side wall of the movable cylinder is fixedly connected to a No. 3 inclined block.

[0013] Furthermore, the limiting device includes a telescopic part No. 1, which is fixedly installed on the movable frame. The telescopic end of the telescopic part No. 1 is fixedly connected to a circular arc part. One end inside the circular arc part is fixedly connected to a friction inner part No. 1. The other end inside the circular arc part is slidably connected to a friction inner part No. 2. One side of the friction inner part No. 2 is slidably connected to one end of the connecting plate.

[0014] Furthermore, the No. 1 limiting component includes a clamp, the bottom end of the clamp is rotatably connected to the inside of the gate valve frame, one side of the clamp is rotatably connected to a No. 3 telescopic member, and the telescopic end of the No. 3 telescopic member is rotatably connected to the inside of the gate valve frame.

[0015] A valve plate uses the above-mentioned valve stem, including a valve plate member, the top end of the valve plate member and the bottom end of the valve stem member are fixed, a sealing assembly for achieving sealing is installed on the valve plate member, the sealing assembly includes a sliding block, the outer wall of the sliding block is slidably connected to the inner wall of the valve plate member, a circular ring is slidably connected to the inner wall of the valve plate member, a rubber pad is fixedly connected between one side of the circular ring and one side of the valve plate member, a No. 7 spring is fixedly connected between the sliding block and the valve plate member, a No. 8 spring is fixedly connected between the circular ring and the valve plate member, and one side of the sliding block is in contact with the other side of the circular ring.

[0016] A gate valve comprises a pipeline component and uses the above-mentioned valve stem. The top end of the pipeline component is fixed to the bottom end of a gate valve frame.

[0017] A gate valve includes a pipeline component and uses the above-mentioned valve plate. The bottom end of the gate valve frame is fixed to the top end of the pipeline component, and the valve plate component is installed inside the pipeline component for opening and closing the pipeline component.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The gate valve, valve plate and valve stem are provided with a quick response structure. The No. 2 moving component controls the movement of the moving frame to store energy for the No. 1 spring so that quick opening and closing can be completed later. The No. 1 limiting component limits the position of the moving frame so that the No. 1 spring is in a ready-to-fire state. When a quick response is required, the No. 1 limiting component cancels the restriction on the moving frame. At the same time, when the limiting device does not achieve any restriction, the connecting disk and the limiting device move synchronously to complete the quick movement of the valve stem and achieve quick opening and closing through the No. 1 spring. It has the characteristics of fast response speed, which ensures the need for quick opening and closing of the pipeline in emergency scenarios.

[0020] At the same time, through the setting of the No. 1 limiting component, the No. 1 limiting component can fix the position between the movable frame and the guide rod, which can meet the daily movement of the valve stem. When the No. 1 limiting component is not restricted, it is in a quick response state, thereby realizing the synchronous movement of the connecting disk, the No. 1 limiting component and the movable frame. When the No. 1 limiting component fixes the position between the guide rod and the connecting disk, the No. 2 motor rotates to control the position of the movable frame on the guide rod, so as to make the movable frame return to its original position after the quick response state, thereby ensuring the practicality of the quick response structure.

[0021] Through the setting of the transmission component, when the moving cylinder is not in contact with the connecting disk, the movement of the moving cylinder and the moving frame can pass through the transmission component so that the valve stem and the connecting disk have an initial speed, and the setting of the transmission component makes the direction of the initial speed the same as the moving direction of the moving cylinder. Therefore, when the moving cylinder and the connecting disk are in contact, the impact of the moving cylinder on the connecting disk can be reduced, thereby ensuring the service life of the moving cylinder and the connecting disk. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is an interior isometric view of the present invention;

[0023] Figure 2 is an isometric view of the valve plate of the present invention;

[0024] Figure 3 is a cross-sectional view of the sealing assembly of the present invention;

[0025] Figure 4 is a cross-sectional view of a first moving assembly of the present invention;

[0026] Figure 5 is an isometric view of the restriction device of the present invention;

[0027] Figure 6 It is an isometric view of the rapid response structure and the second mobile assembly of the present invention;

[0028] Figure 7 is a cross-sectional view of the second mobile assembly of the present invention;

[0029] Figure 8 It is a cross-sectional view of the transmission assembly and the quick response structure of the present invention;

[0030] Fig. 9 A partial cross-sectional view of the transmission assembly of the present invention;

[0031] Fig.10 It is a front view of the transmission assembly of the present invention.

[0032] In the figure: 1. gate valve frame; 2. valve stem; 3. connecting plate; 4. No. 1 moving assembly; 401. guide rod; 402. moving frame; 403. No. 2 motor; 404. No. 2 threaded rod; 5. pipeline; 6. quick response structure; 601. No. 1 spring; 602. moving frame; 603. moving cylinder; 604. No. 2 spring; 7. No. 2 moving assembly; 701. round leakage cylinder; 702. No. 1 threaded rod; 703. No. 1 motor; 704. moving block; 8. transmission assembly; 801. fixed plate; 802. main bevel wheel; 803. slave bevel wheel; 804. No. 1 twill plate; 805. No. 2 twill block; 806. L-type Components; 807, spring No. 3; 808, spring No. 4; 809, spring No. 5; 810, inclined plate; 9, limiting assembly No. 1; 901, telescopic component No. 3; 902, clamping component; 10, limiting device; 1001, telescopic component No. 1; 1002, arc component; 1003, friction inner component No. 1; 1004, friction inner component No. 2; 11, valve plate component; 12, sealing assembly; 1201, sliding block; 1202, ring; 1203, rubber pad; 1204, spring No. 7; 1205, spring No. 8; 13, limiting assembly No. 2; 1301, telescopic component No. 2; 1302, spring No. 9; 1303, limiting block No. 3. DETAILED DESCRIPTION

[0033] 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.

[0034] like Figure 1 - Fig.10 As shown, the present invention provides a technical solution: a valve stem, comprising a valve stem member 2, the outer wall of the valve stem member 2 is slidably connected to a gate valve frame 1, the outer wall of the valve stem member 2 is fixedly connected to a connecting plate 3, a moving component 4 for controlling the movement of the connecting plate 3 is installed between the connecting plate 3 and the gate valve frame 1, and the top and bottom ends inside the gate valve frame 1 are respectively fixedly connected to a quick response structure 6 for realizing quick opening and closing;

[0035] The quick response structure 6 includes a No. 1 spring 601, which is fixedly mounted on the gate valve frame 1, a mobile frame 602 is fixedly connected to the No. 1 spring 601, a No. 2 mobile assembly 7 for controlling the movement of the mobile frame 602 is installed between the mobile frame 602 and the gate valve frame 1, a mobile cylinder 603 is slidably connected to the outer wall of the mobile frame 602, and a No. 2 spring 604 is installed between the mobile cylinder 603 and the mobile frame 602;

[0036] A first limiting component 9 for limiting the movement of the moving frame 602 is installed on the gate valve frame 1, a second limiting component 13 for limiting the movement of the moving cylinder 603 is installed on the gate valve frame 1, and a transmission component 8 is installed between the valve stem 2 and the quick response structure 6;

[0037] The transmission assembly 8 includes a fixed plate 801, which is fixedly installed on the gate valve frame 1. The interior of the fixed plate 801 is rotatably connected with a main bevel wheel 802 and a slave bevel wheel 803. The outer wall of the main bevel wheel 802 is meshed with the outer wall of the slave bevel wheel 803. The outer wall of the valve stem member 2 is slidably connected with a twill plate 804 for meshing with the slave bevel wheel 803. A No. 3 spring 807 is fixedly connected between the twill plate 804 and the valve stem member 2. A No. 2 twill block 805 is slidably connected inside the moving cylinder 603. The outer wall of the valve stem member 2 is slidably connected with an L-shaped member 806. A No. 4 spring 808 is fixedly connected between the L-shaped member 806 and the connecting plate 3. A slanted plate 810 for limiting the movement of the twill plate 804 is fixedly connected to one side of the L-shaped member 806. A No. 5 spring 809 is fixedly connected between the No. 2 twill block 805 and the moving cylinder 603.

[0038] The No. 1 moving component 4 includes a guide rod 401, which is fixedly installed inside the gate valve frame 1. A moving frame 402 is slidably connected to the guide rod 401, and a No. 2 motor 403 is fixedly connected to the moving frame 402. A No. 2 threaded rod 404 is fixedly connected to the output end of the No. 2 motor 403. The outer wall of the No. 2 threaded rod 404 is threadedly connected to one end of the connecting plate 3, and one end of the connecting plate 3 is slidably connected to the guide rod 401. A limiting device 10 for limiting the movement of the moving frame 402 on the guide rod 401 is installed on the moving frame 402.

[0039] The No. 2 moving component 7 includes a circular leakage cylinder 701, which is fixedly mounted on the gate valve frame 1. The interior of the circular leakage cylinder 701 is rotatably connected to a No. 1 threaded rod 702. A No. 1 motor 703 for controlling the rotation of the No. 1 threaded rod 702 is fixedly connected to the circular leakage cylinder 701. The outer wall of the No. 1 threaded rod 702 is threadedly connected to a moving block 704. The interior of one end of the moving frame 602 is slidably connected to the outer wall of the circular leakage cylinder 701.

[0040] The No. 2 limiting assembly 13 includes a No. 2 telescopic member 1301, which is fixedly mounted on the gate valve frame 1. The telescopic end of the No. 2 telescopic member 1301 is fixedly connected to a No. 9 spring 1302, and the telescopic end of the No. 9 spring 1302 is fixedly connected to a No. 3 limiting block 1303. The outer wall of the No. 3 limiting block 1303 is slidably connected to the gate valve frame 1, and the top of the side wall of the moving cylinder 603 is fixedly connected to a No. 3 inclined block.

[0041] The limiting device 10 includes a telescopic member No. 1001, which is fixedly installed on the movable frame 402. The telescopic end of the telescopic member No. 1001 is fixedly connected to the arc member 1002. One end inside the arc member 1002 is fixedly connected to the friction inner member No. 1003. The other end inside the arc member 1002 is slidably connected to the friction inner member No. 2 1004. One side of the friction inner member No. 1004 is slidably connected to one end of the connecting plate 3.

[0042] The No. 1 limiting component 9 includes a clamp 902, the bottom end of the clamp 902 is rotatably connected to the inside of the gate valve frame 1, and one side of the clamp 902 is rotatably connected to the No. 3 telescopic component 901, and the telescopic end of the No. 3 telescopic component 901 is rotatably connected to the inside of the gate valve frame 1.

[0043] A valve plate uses the above-mentioned valve stem, including a valve plate member 11, the top end of the valve plate member 11 and the bottom end of the valve stem member 2 are fixed, a sealing assembly 12 for achieving sealing is installed on the valve plate member 11, the sealing assembly 12 includes a sliding block 1201, the outer wall of the sliding block 1201 is slidably connected to the inner wall of the valve plate member 11, a circular ring 1202 is slidably connected to the inner wall of the valve plate member 11, a rubber pad 1203 is fixedly connected between one side of the circular ring 1202 and one side of the valve plate member 11, a No. 7 spring 1204 is fixedly connected between the sliding block 1201 and the valve plate member 11, a No. 8 spring 1205 is fixedly connected between the circular ring 1202 and the valve plate member 11, and one side of the sliding block 1201 is in contact with the other side of the circular ring 1202.

[0044] A gate valve comprises a pipe member 5 and uses the above-mentioned valve stem. The top end of the pipe member 5 is fixed to the bottom end of a gate valve frame 1.

[0045] A gate valve includes a pipe member 5 and uses the above-mentioned valve plate. The bottom end of the gate valve frame 1 is fixed to the top end of the pipe member 5. A valve plate member 11 for opening and closing the pipe member 5 is installed inside the pipe member 5.

[0046] When the limiting device 10 fixes the position between the movable frame 402 and the guide rod 401, the output end of the No. 2 motor 403 and the No. 2 threaded rod 404 rotate, the connecting disk 3 is affected by the rotation of the No. 2 threaded rod 404, the connecting disk 3 and the valve stem member 2 move, and the control of the valve plate member 11 is completed, so that the valve plate member 11 can be opened or closed under normal circumstances.

[0047] When the limiting device 10 fixes the position between the guide rod 401 and the connecting disk 3, the output end of the No. 2 motor 403 and the No. 2 threaded rod 404 rotate. At this time, since the position between the connecting disk 3 and the guide rod 401 is fixed, the No. 2 threaded rod 404 rotates and moves, thereby causing the movable frame 402 to move on the guide rod 401, thereby adjusting the position of the movable frame 402 on the guide rod 401.

[0048] When no restriction is implemented in the restriction device 10, the movable frame 602 and the movable cylinder 603 move, exerting force on the connecting disk 3, thereby driving the entire restriction device 10 to move.

[0049] The telescopic movement of the telescopic end of the No. 1 telescopic member 1001 can realize the fixation of the position between the movable frame 402 and the guide rod 401 and the fixation of the position between the guide rod 401 and the connecting plate 3, thereby realizing the switching of these two states. The telescopic end of the No. 1 telescopic member 1001 moves, and the arc member 1002 moves, so that the No. 1 friction inner member 1003 and the No. 2 friction inner member 1004 inside the arc member 1002 move, thereby respectively realizing the contact between the No. 1 friction inner member 1003 and the guide rod 401, or the No. 2 friction inner member 1004. 04 comes into contact with the guide rod 401, and the guide rod 401 may be provided with friction patterns, which can be used to increase the friction between the No. 1 friction inner part 1003 and the guide rod 401, and increase the friction between the No. 2 friction inner part 1004 and the guide rod 401, so as to achieve the fixation of the position between the movable frame 402 and the guide rod 401 or the fixation of the position between the guide rod 401 and the connecting plate 3. When no restriction is implemented in the restriction device 10, at this time, the No. 1 friction inner part 1003 and the No. 2 friction inner part 1004 do not come into contact with the guide rod 401.

[0050] The first friction inner part 1003 is in contact with the guide rod 401, so as to fix the position between the movable frame 402 and the guide rod 401. At this time, the output end of the second motor 403 rotates to complete the movement of the valve plate 11. The second friction inner part 1004 is in contact with the guide rod 401, so as to fix the position between the guide rod 401 and the connecting plate 3. The output end of the second motor 403 rotates to adjust the position of the movable frame 402 on the guide rod 401. A sensor that can detect the relative position between the guide rod 401 and the movable frame 402, such as an acoustic wave sensor, can be provided on the guide rod 401 or the movable frame 402. The acoustic wave sensor is installed on the guide rod 401 to detect the relative position between the guide rod 401 and the movable frame 402. The relative position between the frame 402 and the guide rod 401 is achieved through the setting of the No. 1 limiting component 9. The No. 1 limiting component 9 realizes the fixation of the position between the movable frame 402 and the guide rod 401, which can meet the daily movement of the valve stem 2. When the No. 1 limiting component 9 is limiting, it is in a quick response state, and then the synchronous movement of the connecting disk 3, the No. 1 limiting component 9 and the movable frame 402 can be achieved. When the No. 1 limiting component 9 realizes the fixation of the position between the guide rod 401 and the connecting disk 3, the No. 2 motor 403 rotates to control the position of the movable frame 402 on the guide rod 401, so as to make the movable frame 402 return to its original position after the quick response state, thereby ensuring the practicality of the quick response structure 6.

[0051] The limiting device 10 fixes the position between the movable frame 402 and the guide rod 401, thereby assisting in achieving the control of the valve plate 11 in daily needs, and the limiting device 10 fixes the position between the guide rod 401 and the connecting disk 3, thereby controlling the position of the movable frame 402 after a quick response so as to return to the position before the quick response, so as to achieve the control of the valve plate 11 in daily needs.

[0052] like Figure 8 , Fig. 9 and Fig.10 As shown, in an emergency, when it is necessary to realize the rapid opening and closing of the gate valve, the No. 1 limiting component 9 cancels the restriction on the moving frame 602, the telescopic end of the No. 3 telescopic member 901 moves, the clamp 902 rotates, the clamp 902 and the moving frame 602 separate, and under the action of the No. 1 spring 601, the moving frame 602 moves to apply force to the moving cylinder 603, so that the moving cylinder 603 moves. When the moving frame 602 applies force to the moving cylinder 603, the No. 1 bevel block and the No. 2 bevel block 805 come into contact, thereby causing the No. 2 bevel block 805 to move. The No. 2 twill block 805 is in contact with other structures in the transmission assembly 8 to complete the transmission of the transmission assembly 8 to the valve stem 2. When the moving frame 602 does not apply force to the moving cylinder 603, the No. 2 twill block 805 will not contact other structures of the transmission assembly 8 under the action of the No. 5 spring 809. Therefore, when the quick response structure 6 is in a stationary state, the No. 2 twill block 805 will not contact the main bevel wheel 802. In daily use, the movement of the valve stem 2 will not be affected by the No. 2 twill block 805, so that the valve stem 2 can move normally.

[0053] When realizing rapid opening and closing, the moving cylinder 603 moves and contacts with the connecting disk 3, completing the movement of the connecting disk 3 and the valve stem 2, the No. 2 inclined block on the moving cylinder 603 contacts with the inclined surface at the bottom of the L-shaped member 806, the No. 2 inclined block applies force to the L-shaped member 806, so that the L-shaped member 806 moves, the No. 4 spring 808 is compressed, and the inclined plate 810 moves at the same time. At this time, due to the gradual thickness design of the inclined plate 810, the inclined plate 810 cancels the restriction on the No. 1 twill plate 804 during the movement process, and the No. 1 twill plate 804 and the valve stem 2 are slidably connected, but there is a maximum distance for the sliding connection. When the maximum thickness of the inclined plate 810 is between the No. 1 twill plate 804 and the valve stem 2, the sliding distance between the No. 1 twill plate 804 and the valve stem 2 reaches the maximum distance, and then the No. 1 twill plate 804 cannot move at this time, and the No. 2 twill block 805 moves upward with the moving cylinder 603. The twill block 805 contacts the main bevel wheel 802, thereby causing the main bevel wheel 802 to rotate, and the slave bevel wheel 803 rotates, and the side of the second twill block 805 can mesh with the outer wall of the main bevel wheel 802, and the side of the first twill plate 804 can mesh with the outer wall of the slave bevel wheel 803, thereby realizing transmission. In this way, when the moving cylinder 603 has not yet contacted the connecting disk 3, the valve stem member 2 has an initial moving speed through the transmission assembly 8, thereby reducing the impact force of the moving cylinder 603 on the connecting disk 3. When the second twill block contacts the inclined surface at the bottom of the L-shaped member 806, the inclined plate 810 moves, and then the first twill plate 804 is separated from the slave bevel wheel 803 under the action of the third spring 807. This design is to avoid the moving cylinder 603 applying force to the connecting disk 3 to make it move while being affected by the transmission of the transmission assembly 8, so as to avoid the transmission of two different paths and the resulting jamming, that is, the inability to achieve rapid opening and closing.

[0054] The movable cylinder 603 is restricted in the set position by the No. 2 restriction component 13. The movable cylinder 603 and the gate valve frame 1 restrict the connecting plate 3, thereby restricting the valve stem 2 in the current position, so that the valve stem can be kept in the current position after rapid opening and closing. At this time, the No. 2 movable component 7 is started, the output end of the No. 1 motor 703 and the No. 1 threaded rod 702 rotate, and the movable block 704 is affected by the rotation of the No. 1 threaded rod 702 and the sliding connection with the circular leak cylinder 701, so that the movable block 704 moves, and the movable block 704 moves and contacts the movable frame 602, so that the movable frame 602 can contact the No. 1 restriction component. 9 contacts, realizing the restriction of the mobile frame 602 by the No. 1 restriction component 9, and then the output end of the No. 1 motor 703 rotates in the opposite direction, and through transmission, the moving block 704 moves in the opposite direction, so that the moving block 704 is away from the mobile frame 602, thereby avoiding the influence of the moving block 704 on the quick response structure 6 during the operation of the quick response structure 6. The No. 3 restriction block 1303 restricts the moving cylinder 603 under the action of the No. 9 spring 1302. In the process of the moving cylinder 603 and the moving frame 602 separating, the No. 2 spring 604 is stretched, and the telescopic end of the No. 2 telescopic member 1301 contracts, so that the No. 9 spring 1302 and the No. 3 restriction block 1303 are 03 moves, thereby canceling the restriction on the moving cylinder 603, so that the distance between the moving cylinder 603 and the moving frame 602 becomes closer under the action of the No. 2 spring 604, so as to facilitate the subsequent rapid response. Through the setting of the rapid response structure 6, the No. 2 moving component 7 controls the movement of the moving frame 602 to realize the energy storage of the No. 1 spring 601, so as to complete the rapid opening and closing later. The No. 1 limiting component 9 limits the position of the moving frame 602, so that the No. 1 spring 601 is in a ready-to-fire state. When a rapid response is required, the No. 1 limiting component 9 cancels the restriction on the moving frame 602. At the same time, when the limiting device 10 does not achieve any restriction, the connecting disk 3 and the limiting device 10 are closed. The setting 10 moves synchronously to complete the rapid movement of the valve stem 2, and realizes rapid opening and closing through the No. 1 spring 601, which has the characteristics of fast response speed. Through the setting of the transmission component 8, when the moving cylinder 603 does not come into contact with the connecting disk 3, the movement of the moving cylinder 603 and the moving frame 602 can be through the transmission component 8, so that the valve stem 2 and the connecting disk 3 have an initial speed, and the setting of the transmission component 8 makes the direction of the initial speed the same as the moving direction of the moving cylinder 603. Therefore, when the moving cylinder 603 and the connecting disk 3 are in contact, the impact of the moving cylinder 603 on the connecting disk 3 can be reduced, thereby ensuring the service life of the moving cylinder 603 and the connecting disk 3.

[0055] When the valve plate 11 closes the pipe member 5, the sliding block 1201 comes into contact with the inner wall of the pipe, thereby applying force to the ring 1202 to move it, and the rubber pad 1203 moves synchronously with the ring 1202. The rubber pad 1203 comes into contact with the side surface inside the pipe member 5 and is squeezed to deform, thereby increasing the air tightness when closing. At the same time, when opening, under the action of the No. 7 spring 1204 and the No. 8 spring 1205, the sliding block 1201, the ring 1202 and the rubber pad 1203 will move in the opposite direction, and the setting of the sealing component 12 will not affect the normal opening of the normal gate valve.

[0056] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is limited by the attached embodiments and their equivalents.

Claims

1. A valve stem, comprising a valve stem member (2), characterized in that: The outer wall of the valve stem (2) is slidably connected to the gate valve frame (1), the outer wall of the valve stem (2) is fixedly connected to the connection plate (3), a moving component (4) for controlling the movement of the connection plate (3) is installed between the connection plate (3) and the gate valve frame (1), and the top and bottom ends of the gate valve frame (1) are respectively fixedly connected to a quick response structure (6) for achieving quick opening and closing; The quick response structure (6) comprises a No. 1 spring (601), the No. 1 spring (601) is fixedly mounted on the gate valve frame (1), a moving frame (602) is fixedly connected to the No. 1 spring (601), a No. 2 moving assembly (7) for controlling the movement of the moving frame (602) is installed between the moving frame (602) and the gate valve frame (1), a moving cylinder (603) is slidably connected to the outer wall of the moving frame (602), and a No. 2 spring (604) is installed between the moving cylinder (603) and the moving frame (602); A first limiting component (9) for limiting the movement of the movable frame (602) is installed on the gate valve frame (1), a second limiting component (13) for limiting the movement of the movable cylinder (603) is installed on the gate valve frame (1), and a transmission component (8) is installed between the valve stem (2) and the quick response structure (6); The transmission assembly (8) comprises a fixed plate (801), the fixed plate (801) being fixedly mounted on the gate valve frame (1), the interior of the fixed plate (801) being rotatably connected to a main bevel wheel (802) and a slave bevel wheel (803), the outer wall of the main bevel wheel (802) being meshed with the outer wall of the slave bevel wheel (803), the outer wall of the valve stem (2) being slidably connected to a bevel plate (804) for meshing with the slave bevel wheel (803), a third spring being fixedly connected between the bevel plate (804) and the valve stem (2) A spring (807) is provided, the interior of the movable cylinder (603) is slidably connected to a No. 2 twill block (805), the outer wall of the valve stem (2) is slidably connected to an L-shaped member (806), a No. 4 spring (808) is fixedly connected between the L-shaped member (806) and the connecting plate (3), a slanted plate (810) for limiting the movement of the twill plate (804) is fixedly connected to one side of the L-shaped member (806), and a No. 5 spring (809) is fixedly connected between the No. 2 twill block (805) and the movable cylinder (603).

2. A valve stem according to claim 1, characterized in that: The first moving assembly (4) comprises a guide rod (401), the guide rod (401) being fixedly mounted inside the gate valve frame (1), a moving frame (402) being slidably connected to the guide rod (401), a second motor (403) being fixedly connected to the moving frame (402), a second threaded rod (404) being fixedly connected to the output end of the second motor (403), an outer wall of the second threaded rod (404) being threadedly connected to one end of a connecting plate (3), one end of the connecting plate (3) being slidably connected to the guide rod (401), and a limiting device (10) for limiting the movement of the moving frame (402) on the guide rod (401) being mounted on the moving frame (402).

3. A valve stem according to claim 1, characterized in that: The second moving assembly (7) comprises a circular leakage cylinder (701), the circular leakage cylinder (701) being fixedly mounted on the gate valve frame (1), the interior of the circular leakage cylinder (701) being rotatably connected to a No. 1 threaded rod (702), the circular leakage cylinder (701) being fixedly connected to a No. 1 motor (703) for controlling the rotation of the No. 1 threaded rod (702), the outer wall of the No. 1 threaded rod (702) being threadedly connected to a moving block (704), and the interior of one end of the moving frame (602) being slidably connected to the outer wall of the circular leakage cylinder (701).

4. A valve stem according to claim 1, characterized in that: The No. 2 limiting assembly (13) comprises a No. 2 telescopic member (1301), the No. 2 telescopic member (1301) is fixedly mounted on the gate valve frame (1), the telescopic end of the No. 2 telescopic member (1301) is fixedly connected to a No. 9 spring (1302), the telescopic end of the No. 9 spring (1302) is fixedly connected to a No. 3 limiting block (1303), the outer wall of the No. 3 limiting block (1303) is slidably connected to the gate valve frame (1), and the top end of the side wall of the moving cylinder (603) is fixedly connected to a No. 3 inclined block.

5. A valve stem according to claim 2, characterized in that: The limiting device (10) comprises a telescopic member No. 1 (1001), the telescopic member No. 1 (1001) is fixedly mounted on the movable frame (402), the telescopic end of the telescopic member No. 1 (1001) is fixedly connected to a circular arc member (1002), one end inside the circular arc member (1002) is fixedly connected to a friction inner member No. 1 (1003), the other end inside the circular arc member (1002) is slidably connected to a friction inner member No. 2 (1004), and one side of the friction inner member No. 2 (1004) is slidably connected to one end of the connecting plate (3).

6. A valve stem according to claim 1, characterized in that: The No. 1 limiting component (9) comprises a clamp (902), the bottom end of the clamp (902) being rotatably connected to the inside of the gate valve frame (1), one side of the clamp (902) being rotatably connected to a No. 3 telescopic component (901), the telescopic end of the No. 3 telescopic component (901) being rotatably connected to the inside of the gate valve frame (1).

7. A valve plate, using a valve stem according to any one of claims 1 to 6, comprising a valve plate member (11), characterized in that: The top end of the valve plate member (11) and the bottom end of the valve stem member (2) are fixed to each other, and a sealing assembly (12) is installed on the valve plate member (11). The sealing assembly (12) includes a sliding block (1201), the outer wall of the sliding block (1201) is slidably connected to the inner wall of the valve plate member (11), and a circular ring (1202) is slidably connected to the inner wall of the valve plate member (11), a rubber pad (1203) is fixedly connected between one side of the circular ring (1202) and one side of the valve plate member (11), a No. 7 spring (1204) is fixedly connected between the sliding block (1201) and the valve plate member (11), and a No. 8 spring (1205) is fixedly connected between the circular ring (1202) and the valve plate member (11), and one side of the sliding block (1201) is in contact with the other side of the circular ring (1202).

8. A gate valve, comprising a pipeline member (5), characterized in that: A valve stem as claimed in any one of claims 1 to 6 is used, and the top end of the pipe member (5) is fixed to the bottom end of the gate valve frame (1).

9. A gate valve, comprising a pipeline member (5), characterized in that: A valve plate as claimed in claim 7 is used, the bottom end of the gate valve frame (1) and the top end of the pipeline member (5) are fixed to each other, and a valve plate member (11) for opening and closing the pipeline member (5) is installed inside the pipeline member (5).

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