Flat gate valve convenient to screw

Abstract

The invention relates to the technical field of flat gate valves, and discloses a flat gate valve convenient to screw, which comprises a gate valve shell, a channel is formed in the gate valve shell, a mounting bin is mounted at the upper end of the gate valve shell, an adjusting assembly is arranged in the mounting bin, and a lifting assembly is connected to the lower end of the adjusting assembly. Auxiliary positioning assemblies are arranged on the two sides of the lifting assembly. According to the flat gate valve convenient to screw, the opening and closing speed of the gate valve can be accurately controlled through the adjusting assembly by selecting a proper bevel gear combination, then the flow of fluid is accurately controlled, the strict requirements for technological parameters in fine chemical industry production are met, and operation is easier and more convenient; the gate is stably driven to move up and down, and the opening degree of the gate is accurately controlled, so that the flow of a medium is accurately adjusted, the fault probability of the valve is reduced to a certain extent, and the operation stability of the gate is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of flat gate technology, specifically a flat gate valve that is easy to turn. Background Technology

[0002] A flat gate valve is a type of valve that uses a flat gate to cut off or connect pipeline media by making linear movements. Its main feature is that the gate is flat and it is suitable for controlling high-pressure, large-diameter, or media containing solid particles.

[0003] Flat gate valves, as a common type of shut-off valve, are widely used in pipeline systems in industries such as petroleum, chemical, and natural gas to control the flow and cut-off of media. In actual use, operators need to rotate the valve stem to raise and lower the gate to open or close the valve. Therefore, it is necessary to develop a flat gate valve that is easy to turn and use.

[0004] The prior art, disclosed in CN114413010A, provides a low-torque flat gate valve with forced sealing capability. It includes a valve body and a gate located within the valve body. The valve body has annular grooves, and a main valve seat and a controllable valve seat are sequentially and sealed within the two annular grooves. The gate is located between the two main valve seats and its two sides are slidably sealed to the main valve seats. The inner wall of the main valve seat has multiple medium through holes, and the main valve seat has a main valve seat closing annular groove communicating with the medium through holes. The controllable valve seat is in movable contact with the main valve seat, and a controllable valve seat closing annular groove is located at the end of the controllable valve seat near the bottom of the annular groove. The valve body has an external control channel communicating with the controllable valve seat closing annular groove and the annular groove. This invention uses medium pressure and external control pressure to push the main valve seat and the external control valve seat respectively, achieving reliable sealing under both high and low pressure conditions. By achieving front seat sealing and no pressure in the valve cavity, it significantly reduces the switching torque, meeting the requirements of high-pressure, large-diameter gate valves.

[0005] The aforementioned existing technology, while achieving front seat sealing across the entire pressure range using external control pressure and a controllable valve seat, with the medium pressure and external control pressure respectively driving the main valve seat and the external control valve seat to ensure reliable sealing under both high and low pressure conditions, and with measurable, controllable, reliable, and stable external control pressure capable of forced sealing, thus changing the passive situation of valve products (gate valves, ball valves) relying solely on medium pressure for sealing, lacks the function of adjusting the turning coefficient of the flat gate valve. In practical applications, flat gate valves face different working conditions, such as changes in medium flow rate, pressure, and temperature, and the inability to adjust the turning coefficient means that the valve's operating performance cannot reach its optimal state when the operating conditions change.

[0006] It is evident that a flat gate valve that is easy to turn is needed to solve the problem mentioned in the background art, which is that the inability to adjust the turning coefficient limits the application range of flat gate valves. Summary of the Invention

[0007] The purpose of this invention is to provide a flat gate valve that is easy to turn, so as to solve the problems mentioned in the background art.

[0008] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a flat gate valve that is easy to turn, including a gate valve body, a channel is opened inside the gate valve body, and an installation chamber is installed at the upper end of the gate valve body. An adjustment component is arranged inside the installation chamber, and a lifting component is connected to the lower end of the adjustment component. Auxiliary positioning components are arranged on both sides of the lifting component. The adjustment assembly includes a pneumatic telescopic rod, and the output end of the pneumatic telescopic rod is connected to a movable seat. Bearings are provided on both sides of the movable seat, and a rotating rod is installed in the middle of the bearings. One end of the rotating rod is connected to a turning seat, and the other end of the rotating rod is connected to a first bevel gear. A second bevel gear is provided on one side of the first bevel gear, and a connecting rod is provided at the lower end of the second bevel gear. A third bevel gear is provided on the side of the first bevel gear away from the second bevel gear, and a connecting rod is installed at the lower end of the third bevel gear. The lifting assembly includes a connecting seat, and a connecting shaft is installed at the lower end of the connecting seat. A pulley set is sleeved on the outer side of the connecting shaft, and a lead screw is installed at the lower end of the connecting shaft. A moving block is sleeved on the outer side of the lead screw, and a vertical rod is installed at the lower end of the middle position of the moving block. The auxiliary positioning component includes a mounting groove, and a first spring is placed in the mounting groove. A first slider is provided on one side of the first spring. A convex ball is installed at one end of the first slider, and a concave hole is opened in the mounting chamber at the corresponding position of the convex ball.

[0009] Preferably, the lower end of the auxiliary positioning component is connected to a gate, the gate is provided with a sealing component around its perimeter, the gate is provided with a through groove, the bottom of the gate valve body is provided with a bottom frame, and a sealing seat is installed in the bottom frame.

[0010] Preferably, the pneumatic telescopic rod is detachably installed at the upper end of the installation chamber, and the output end of the pneumatic telescopic rod passes through the installation chamber and extends into its inner cavity. The rotating rod passes through the movable seat and extends to its outer side. The first bevel gear meshes with the second bevel gear and the third bevel gear respectively.

[0011] Preferably, the second bevel gear and the third bevel gear are separated by a distance, the connecting rod passes through the third bevel gear and extends to its outer side, and the connecting rod and the connecting rod are respectively connected to the connecting seat.

[0012] Preferably, there are multiple sets of connecting shafts, which are connected together by a set of pulleys, and the number of connecting shafts matches the lead screw, which in turn matches the moving block.

[0013] Preferably, the mounting grooves are arranged symmetrically in two sets within the moving block, the first slider slides within the mounting groove, the convex ball penetrates the mounting groove and extends to its outer side, and the concave holes are in multiple sets, with the multiple sets of concave holes being evenly spaced on the inner wall of the mounting chamber, and the concave holes matching the convex balls.

[0014] Preferably, the sealing assembly includes a sealing gasket, and a screw is installed around the gate valve body. One end of the screw is provided with a pressure block, and the pressure block has placement grooves on both sides. A second spring is placed inside the placement groove, and a second slider is provided on one side of the second spring. One end of the second slider is connected to a protrusion. The gate valve body has a placement groove at the corresponding position of the sealing gasket, and the inner wall of the placement groove has multiple sets of equally spaced grooves.

[0015] Preferably, the sealing gasket has a U-shaped structure that matches the gate plate, the screw is threadedly connected to the gate valve body, and there are multiple sets of screws symmetrically arranged. The pressure block is slidably arranged in the opening placement groove.

[0016] Preferably, the second slider is slidably disposed within the placement groove, the protrusion has a triangular cross-section, and the protrusion matches the groove.

[0017] Preferably, the gate plate passes through the mounting compartment and extends into the gate valve body, and the through groove matches the channel.

[0018] Compared with the prior art, the beneficial effects achieved by the present invention are: First, by setting an adjustment component and using a suitable combination of bevel gears, the present invention can accurately control the opening and closing speed of the gate valve, thereby precisely controlling the flow rate of the fluid and meeting the strict requirements of process parameters in fine chemical production. By using a combination of small-tooth bevel gears driving large-tooth bevel gears, the torque is increased, and operators can operate the valve with less force, greatly reducing labor intensity and making operation easier and more convenient.

[0019] Secondly, the present invention uses a lifting component and an auxiliary positioning component to stably drive the gate to move up and down, accurately control the opening of the gate, thereby accurately regulating the flow of the medium, reducing the probability of valve failure to a certain extent, reducing system downtime and production losses caused by valve failure, and ensuring the stability of the gate operation.

[0020] Third, the present invention ensures the sealing performance of the gate during use by setting a sealing component. The pressure of the sealing gasket and the gate is adjusted by the screw, which makes it convenient to accurately adjust the pressure on the sealing gasket according to the changes in specific working conditions. This allows the sealing gasket to better adapt to the sealing requirements under different working conditions, thereby ensuring that the gate and the gate valve body always maintain a good sealing state and effectively prevent media leakage. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the structure of the adjusted component of the present invention; Figure 4 This is a schematic diagram of the lifting assembly of the present invention; Figure 5 For the present invention Figure 2 Enlarged view of the structure at point A in the middle; Figure 6 This is a schematic diagram of the structure of the sealing gasket and the gate of the present invention; Figure 7 For the present invention Figure 2 Enlarged view of the structure at point B.

[0022] The components include: 1. Gate valve body; 2. Channel; 3. Mounting chamber; 4. Adjustment assembly; 401. Pneumatic telescopic rod; 402. Moving seat; 403. Bearing; 404. Rotating rod; 405. Tightening seat; 406. First bevel gear; 407. Second bevel gear; 408. Connecting rotating rod; 409. Third bevel gear; 410. Connecting rod; 5. Lifting assembly; 501. Connecting seat; 502. Connecting shaft; 503. Pulley assembly; 504. Lead screw; 5 05. Moving block; 506. Vertical rod; 6. Auxiliary positioning component; 601. Mounting groove; 602. First spring; 603. First slider; 604. Convex ball; 605. Concave hole; 7. Gate plate; 8. Sealing component; 801. Sealing gasket; 802. Screw; 803. Pressure block; 804. Placement groove; 805. Second spring; 806. Second slider; 807. Protrusion; 808. Groove; 9. Through groove; 10. Base frame; 11. Sealing seat. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see Figures 1-3A convenient-to-twist flat gate valve includes a gate valve body 1, with a channel 2 inside the gate valve body 1. An installation chamber 3 is installed at the upper end of the gate valve body 1. An adjustment assembly 4 is provided inside the installation chamber 3. The adjustment assembly 4 includes a pneumatic telescopic rod 401, and the output end of the pneumatic telescopic rod 401 is connected to a movable seat 402. Bearings 403 are provided on both sides of the movable seat 402. A rotating rod 404 is installed in the middle of the bearings 403. One end of the rotating rod 404 is connected to a turning seat 405, and the other end of the rotating rod 404 is connected to a first bevel gear 406. A second bevel gear 407 is provided on one side of the first bevel gear 406, and a connecting rod 408 is provided at the lower end of the second bevel gear 407. A third bevel gear 409 is provided on the side of the first bevel gear 406 away from the second bevel gear 407, and a connecting rod 410 is installed at the lower end of the third bevel gear 409.

[0025] In this embodiment, the adjustment component 4 can flexibly adjust the position of the moving seat 402 via the pneumatic telescopic rod 401, thereby changing the meshing state of the first bevel gear 406 with the second bevel gear 407 and the third bevel gear 409. When it is necessary to adjust the turning force and opening / closing speed of the gate valve, the pneumatic telescopic rod 401 extends or retracts, driving the moving seat 402 to move. If the second bevel gear 407 or the third bevel gear 409 with a small number of teeth meshes with the first bevel gear 406 with a large number of teeth, the torque is increased, allowing the operator to rotate the turning seat 405 with only a small force to easily open or close the gate valve, which is particularly suitable for... To reduce labor intensity under large-diameter, high-pressure operating conditions, if a second bevel gear 407 or a third bevel gear 409 with a large number of teeth meshes with a first bevel gear 406 with a small number of teeth, the opening and closing speed of the gate valve can be accelerated, meeting the needs for rapid fluid flow control. This allows for timely adjustment of the medium flow rate when the automated production line quickly switches processes. At the same time, the bearing 403 effectively reduces the frictional resistance when the rotating rod 404 rotates, ensuring the stability and efficiency of power transmission, extending the service life of components, and improving the overall operating performance and applicability of the flat gate valve. The second bevel gear 407 and the third bevel gear 409 have different numbers of teeth.

[0026] Specifically, the pneumatic telescopic rod 401 is detachably installed at the upper end of the mounting chamber 3, and the output end of the pneumatic telescopic rod 401 passes through the mounting chamber 3 and extends into its inner cavity. The rotating rod 404 passes through the movable seat 402 and extends to its outer side. The first bevel gear 406 meshes with the second bevel gear 407 and the third bevel gear 409 respectively.

[0027] In this embodiment, the pneumatic telescopic rod 401 is externally connected to an air source and controller to ensure the independent operation of each device. The pneumatic telescopic rod 401 is detachably mounted on the upper end of the installation chamber 3, greatly improving the convenience of equipment maintenance. When the pneumatic telescopic rod 401 malfunctions or its performance deteriorates, there is no need to disassemble the entire flat gate valve. It can be quickly repaired or replaced simply by removing it from the installation chamber 3, effectively shortening downtime and reducing maintenance costs. Its output end extends through the installation chamber 3 into the inner cavity, enabling precise and direct drive of the moving seat 402, ensuring the stability and reliability of power transmission and avoiding power loss caused by complex transmission structures. The rotating rod 404 extends through the moving seat 402 to the outside, facilitating direct operation of the rotating seat 405 by the operator. The installation chamber 3 has a groove at the position corresponding to the sliding path of the turning seat 405. The structure design of the first bevel gear 406 meshing with the second bevel gear 407 and the third bevel gear 409 respectively provides a variety of transmission ratio selection. Under different working conditions, the position of the first bevel gear 406 can be changed by adjusting the pneumatic telescopic rod 401, so that it meshes with the second bevel gear 407 or the third bevel gear 409 with different numbers of teeth, thereby adjusting the turning force and speed of the gate valve during operation. For example, in a high-pressure medium environment, the gear combination that increases the torque can be switched to easily overcome the resistance to open the gate valve. In the scenario where the flow rate needs to be adjusted quickly, the gear combination that increases the speed can be switched to achieve rapid opening and closing of the gate valve, which significantly improves the adaptability and working efficiency of the flat gate valve to complex working conditions.

[0028] Specifically, the second bevel gear 407 and the third bevel gear 409 are separated by a distance, and the connecting rod 408 passes through the third bevel gear 409 and extends to its outer side.

[0029] In this embodiment, the second bevel gear 407 and the third bevel gear 409 are spaced apart, providing flexible switching space for the first bevel gear 406. When the pneumatic telescopic rod 401 drives the moving seat 402 to move, the first bevel gear 406 can precisely mesh with the second bevel gear 407 or the third bevel gear 409, avoiding the first bevel gear 406 from contacting both gears simultaneously due to the small gap between the two gears, which would cause transmission disorder. At the same time, this spacing design also facilitates installation and maintenance, reduces the risk of mutual interference and wear between gears, and extends the service life of the gear set. The connecting rod 408 passes through the third bevel gear 409 and extends to its outer side, making the power output of the third bevel gear 409 more stable and reliable, ensuring that the torque can be efficiently transmitted to the lifting mechanism of the flat gate valve.

[0030] Please see Figures 4-5A type of easy-to-twist flat gate valve, wherein the lower end of the adjusting component 4 is connected to a lifting component 5, and auxiliary positioning components 6 are provided on both sides of the lifting component 5. The lifting component 5 includes a connecting seat 501, and a connecting shaft 502 is installed at the lower end of the connecting seat 501. A pulley group 503 is sleeved on the outer side of the connecting shaft 502, and a lead screw 504 is installed at the lower end of the connecting shaft 502. A moving block 505 is sleeved on the outer side of the lead screw 504, and a vertical rod 506 is installed at the lower end of the middle position of the moving block 505. The auxiliary positioning component 6 includes a mounting groove 601, and a first spring 602 is placed in the mounting groove 601. A first slider 603 is provided on one side of the first spring 602, and a convex ball 604 is installed at one end of the first slider 603. A recessed hole 605 is opened in the mounting chamber 3 at the corresponding position of the convex ball 604.

[0031] In this embodiment, the lifting assembly 5 receives the power transmitted by the adjusting assembly 4 through the connecting seat 501. The connecting shaft 502 rotates synchronously under the action of the pulley set 503, driving the lead screw 504 to rotate stably. The lead screw 504 and the moving block 505 form a helical transmission structure, converting the rotational motion into linear motion, so that the moving block 505 can move smoothly up and down along the lead screw 504. Then, the vertical rod 506 precisely controls the lifting and lowering of the gate 7, realizing precise adjustment of the opening and closing degree of the channel 2. The pulley set 503 not only ensures the synchronous rotation of multiple connecting shafts 502, but also buffers the impact during the power transmission process to a certain extent, protects the lead screw 504 and other components, improves the stability and reliability of the lifting assembly 5, and assists in the positioning. In the positioning component 6, the first spring 602 provides elastic support for the first slider 603, ensuring that the convex ball 604 always maintains a tendency to engage with the recessed hole 605 on the inner wall of the mounting chamber 3. During the process of the moving block 505 driving the gate 7 to rise and fall, the convex ball 604 engages and positions itself in the recessed hole 605 at different positions, effectively limiting the lateral displacement and swaying of the moving block 505, ensuring that the gate 7 moves stably in the vertical direction, and avoiding the phenomenon of poor sealing or jamming between the gate and the valve seat due to deviation. At the same time, when the gate 7 reaches the designated position, the engagement of the convex ball 604 with the recessed hole 605 can provide a certain positioning and locking function, preventing the gate 7 from moving unexpectedly due to factors such as medium pressure fluctuations, thereby enhancing the safety and stability of the flat gate valve during operation.

[0032] Specifically, the connecting rod 408 and the connecting rod 410 are respectively connected to the connecting seat 501. There are multiple sets of connecting shafts 502. The multiple sets of connecting shafts 502 are connected together through the pulley set 503. The number of connecting shafts 502 matches the lead screw 504. The lead screw 504 matches the moving block 505.

[0033] In this embodiment, the connection between the connecting rod 408 and the connecting rod 410 and the connecting seat 501 establishes a stable power transmission bridge between the adjusting component 4 and the lifting component 5. The torque transmitted through the bevel gear is precisely transmitted to the connecting seat 501 via the connecting rod 408 and the connecting rod 410, ensuring lossless and stable power output and providing a reliable power source for the gate lifting. Multiple sets of connecting shafts 502 are interconnected through pulley sets 503 to form a synchronous transmission system. This design allows each lead screw 504 to rotate at the same speed at the same time, ensuring that the moving block 505 matched with the lead screw 504 is subjected to uniform force and lifts and lowers synchronously. When driving the gate 7, this effectively avoids... The uneven rotation of a single lead screw causes the gate to tilt and jam, allowing the gate to move vertically and smoothly along channel 2, precisely controlling the medium flow. At the same time, the pulley assembly 503 has a certain elastic buffering performance, which can absorb the vibration and impact generated during transmission, reduce the wear of components such as lead screw 504 and moving block 505, extend the service life of lifting assembly 5, and improve the overall stability and reliability of the flat gate valve. The lead screw 504 and moving block 505 are precisely matched, efficiently converting rotary motion into linear motion. Through precise pitch design, precise control of the gate's lifting displacement is achieved, meeting the high-precision requirements for valve opening adjustment under different working conditions.

[0034] Specifically, the mounting groove 601 is arranged symmetrically in two sets within the moving block 505. The first slider 603 slides within the mounting groove 601. The convex ball 604 penetrates the mounting groove 601 and extends to its outer side. There are multiple sets of concave holes 605, which are evenly spaced on the inner wall of the mounting chamber 3 and are matched with the convex ball 604.

[0035] In this embodiment, two sets of symmetrically arranged mounting grooves 601 within the movable block 505, together with multiple sets of evenly distributed recesses 605 on the inner wall of the mounting chamber 3, constitute a stable and precise positioning system. The symmetrical distribution design ensures that the movable block 505 experiences balanced force during lifting and lowering, effectively preventing tilting or offset caused by unilateral force. When the movable block 505 drives the gate 7 to rise or fall, the first slider 603 slides within the mounting groove 601. The elastic force provided by the first spring 602 pushes the convex ball 604 to maintain contact with the recesses 605. As the movable block 505 moves, the convex ball 604 sequentially embeds into the recesses 605 at different positions. Each time... The locking mechanism corresponds to a specific position of the gate 7, enabling precise limiting and graded positioning during the gate's lifting and lowering process. This positioning method not only ensures stable vertical movement of the gate 7, preventing wear on the sealing surface caused by shaking, but also provides reliable mechanical positioning when the gate is open or closed, preventing displacement of the gate position due to factors such as medium pressure fluctuations. At the same time, multiple sets of equidistant recesses 605 provide flexible opening adjustment options for the gate 7, allowing the gate to be stopped at different preset positions according to actual working conditions, achieving fine control of medium flow and greatly improving the adaptability and stability of the flat gate valve under complex working conditions.

[0036] Please see Figures 6-7 A convenient-to-twist flat gate valve has an auxiliary positioning component 6 connected to a gate plate 7 at its lower end. A sealing component 8 is provided around the gate plate 7. A through groove 9 is provided on the gate plate 7. A bottom frame 10 is provided at the bottom of the gate valve body 1, and a sealing seat 11 is installed inside the bottom frame 10. The sealing component 8 includes a sealing gasket 801. A screw 802 is installed around the gate valve body 1. A pressure block 803 is provided at one end of the screw 802. Placement grooves 804 are provided on both sides of the pressure block 803. A second spring 805 is placed inside the placement groove 804. A second slider 806 is provided on one side of the second spring 805. A protrusion 807 is connected to one end of the second slider 806. A placement groove is provided on the gate valve body 1 at the corresponding position of the sealing gasket 801. Multiple sets of equidistant grooves 808 are provided on the inner wall of the placement groove.

[0037] In this embodiment, the lower end of the auxiliary positioning component 6 is connected to the gate 7, directly applying the precise positioning function to the gate 7. This ensures that the gate 7 remains vertical and stable during lifting and lowering, preventing sealing failure due to offset. The through groove 9 on the gate 7 precisely corresponds to the channel 2 inside the gate valve body 1. When the gate is open, it provides a smooth flow path for the medium, effectively reducing fluid resistance. When closed, the edge of the through groove tightly engages with the sealing component, forming a reliable sealing barrier. The sealing component 8, through the coordinated design of the screw 802, the pressure block 803, and the sealing gasket 801, achieves flexible adjustment of the sealing pressure. The operator can rotate the screw 802 to push the pressure block 803 according to the working conditions. 03. Then, the fit between the sealing gasket 801 and the gate 7 is adjusted. The elastic locking structure composed of the second spring 805, the second slider 806 and the protrusion 807, when the pressure block moves, the protrusion is embedded in the groove 808 of the inner wall of the gate valve body 1 by the spring force. This not only prevents the pressure block from loosening, but also makes the pressure of the sealing gasket evenly distributed, avoiding excessive or insufficient local pressure from affecting the sealing effect. The bottom frame 10 and the sealing seat 11 at the bottom of the gate valve body 1 provide stable support and secondary sealing guarantee when the gate is closed. The synergistic effect of the multiple sealing structures ensures that the flat gate valve can still achieve zero leakage operation under complex working conditions such as high pressure and high corrosion, which greatly improves the reliability and safety of the equipment.

[0038] Specifically, the sealing gasket 801 has a U-shaped structure that matches the gate plate 7, the screw 802 is threadedly connected to the gate valve body 1, and there are multiple sets of screws 802, which are symmetrically arranged. The pressure block 803 is slidably arranged in the opening placement groove.

[0039] In this embodiment, the sealing gasket 801 adopts a U-shaped structure, which can closely fit the contour of the gate 7 to form a full-circumferential sealing surface. This ensures that when the gate 7 is closed, the medium cannot leak from the surrounding gaps, effectively improving the sealing effect. This structural design precisely matches the gate 7, and even during frequent gate lifting and lowering, the sealing gasket 801 can maintain a good fit, reducing wear caused by friction and extending service life. Multiple sets of symmetrically arranged screws 802 are threadedly connected to the gate valve body 1. By rotating the screws 802, uniform pressure can be applied to the sealing gasket 801. The symmetrically distributed screws 802 avoid the problem of uneven local pressure, ensuring that the sealing gasket is subjected to consistent force in all directions and preventing sealing failure due to pressure deviation. Operators can flexibly adjust the screw depth of each screw according to actual working conditions, and precisely control the clamping force between the sealing gasket and the gate to adapt to the sealing requirements under different pressure and temperature environments. The pressure block 803 is slidably set in the placement groove, so that when adjusting the screw 802, the pressure block can smoothly transmit the pressure to the sealing gasket 801. This sliding structure not only ensures the stability of pressure transmission, but also allows the pressure block to move further down to compensate for the gap and maintain the sealing performance when the sealing gasket wears due to long-term use. At the same time, the sliding setting reduces the frictional resistance between the pressure block 803 and the gate valve body 1, reduces the difficulty of operation, and makes the adjustment of sealing pressure easier and more convenient, effectively improving the practicality and maintenance convenience of the flat gate valve.

[0040] Specifically, the second slider 806 is slidably disposed within the placement groove 804, the protrusion 807 has a triangular cross-section, and the protrusion 807 matches the groove 808.

[0041] In this embodiment, the sliding arrangement of the second slider 806 within the placement groove 804, combined with the matching structure of the triangular cross-section protrusion 807 and the groove 808, constructs an efficient pressure locking and adjustment mechanism. When the operator pushes the pressure block 803 to squeeze the sealing gasket 801 via the screw 802, the second slider 806 slides along the placement groove 804 under the elastic action of the second spring 805, allowing the protrusion 807 to be precisely embedded in the groove 808. The triangular protrusion 807 has unique mechanical advantages; its inclined side provides excellent support for the insertion... When the gasket is inserted into the groove 808, it will automatically lock as the pressure increases. When the medium pressure acts on the gate 7 to try to push the gasket 801 to move, the wedge structure between the protrusion 807 and the groove 808 will convert the pressure into mutual squeezing friction, effectively preventing the pressure block 803 from loosening and ensuring that the gasket always maintains a stable clamping force. At the same time, this structural design also allows the operator to adjust the gasket pressure in multiple stages by cooperating the protrusion 807 with the grooves 808 at different positions when adjusting the screw 802, so as to meet the sealing requirements under different working conditions.

[0042] Specifically, the gate 7 passes through the mounting chamber 3 and extends into the gate valve body 1, and the through groove 9 matches the channel 2.

[0043] In this embodiment, the gate 7 can move smoothly up and down within the gate valve body 1 under the drive of the lifting assembly 5 within the installation chamber 3, thereby controlling the opening and closing of the channel 2. The through groove 9 matches the channel 2. When the gate 7 rises to the open position, the through groove 9 is completely aligned with the channel 2, allowing the medium to pass through the channel 2 and through groove 9 without obstruction, putting the flat gate valve in a conducting state. Due to the precise matching of the two, the resistance and turbulence of the fluid during passage can be effectively reduced, energy loss can be reduced, and the efficiency of medium transportation can be improved. When the gate 7 falls to the closed position, the gate 7 completely blocks the channel 2. At this time, the sealing assembly 8 plays a role in ensuring that the gate valve achieves a good sealing effect, preventing medium leakage, and ensuring the safety and stability of the system. This precise matching design allows the flat gate valve to accurately control the flow of the medium according to actual needs, meeting the requirements for flow and pressure regulation under different working conditions, and improving the practicality and applicability of the flat gate valve.

[0044] In use, when it is necessary to adjust the appropriate turning coefficient, the pneumatic telescopic rod 401 is activated. The pneumatic telescopic rod 401 drives the moving seat 402 to move, which in turn drives the bearing 403 to move. The bearing 403 then drives the rotating rod 404 to move, causing the first bevel gear 406 to engage with the second bevel gear 407 or the third bevel gear 409. Turning the turning seat 405 rotates the rotating rod 404, which in turn drives the first bevel gear 406 to rotate. The first bevel gear 406 then drives the second bevel gear 407 or the third bevel gear 409 to rotate. The rotation of gear 409 drives the connecting rod 408 or connecting rod 410 to rotate, which in turn drives the connecting seat 501 to rotate. The rotation of the connecting seat 501 drives the connecting shaft 502 to rotate, which in turn drives the pulley set 503 to rotate. The rotation of the pulley set 503 drives the two sets of lead screws 504 to rotate synchronously, which in turn drives the moving block 505 to move. The movement of the moving block 505 drives the mounting groove 601 to move, causing the first spring 602 to elastically deform. The elastic deformation of the first spring 602 causes the first slider 603 to slide, which in turn drives the convex ball 6... 04. After disengaging from the concave hole 605, when moving to the position of the next concave hole 605, the first spring 602 resets, causing the first slider 603 to slide. The sliding of the first slider 603 causes the convex ball 604 to move and get stuck in the concave hole 605, ensuring the stability of the position movement. At the same time, the movement of the moving block 505 causes the vertical rod 506 to move, and the movement of the vertical rod 506 causes the gate plate 7 to move. When the gate plate 7 moves so that the through groove 9 is aligned with the channel 2, it is convenient to open the gate valve body 1 to transport fluid. When it is necessary to adjust the sealing structure to ensure sealing, the screw 802 is rotated. The screw 802 is threadedly connected to the gate valve body 1. The screw 802 is continuously screwed in to press the pressure. When block 803 moves, the movement of pressure block 803 drives the placement groove 804 to move. The inner wall of the placement groove presses against the protrusion 807, causing the second spring 805 to undergo elastic deformation. The elastic deformation of the second spring 805 causes the second slider 806 to slide. The second slider 806 drives the protrusion 807 to disengage from the groove 808. When it moves to the next groove 808 position, the second spring 805 resets and drives the second slider 806 to slide. The sliding of the second slider 806 causes the protrusion 807 to be stuck in the groove 808. At the same time, the pressure block 803 moves and presses against the outside of the sealing gasket 801, so that the sealing gasket 801 and the outside of the gate 7 are tightly fitted to ensure sealing.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made to these embodiments without departing from the principles and spirit of this application. The scope of this application is defined by the appended claims and their equivalents.

Claims

1. A convenient-to-turn flat gate valve, comprising a gate valve body (1), characterized in that: The gate valve housing (1) has a channel (2) inside, and an installation chamber (3) is installed at the upper end of the gate valve housing (1). An adjustment component (4) is provided inside the installation chamber (3), and a lifting component (5) is connected to the lower end of the adjustment component (4). Auxiliary positioning components (6) are provided on both sides of the lifting component (5). The adjustment assembly (4) includes a pneumatic telescopic rod (401), and the output end of the pneumatic telescopic rod (401) is connected to a movable seat (402). Bearings (403) are provided on both sides of the movable seat (402). A rotating rod (404) is installed in the middle of the bearings (403). One end of the rotating rod (404) is connected to a turning seat (405), and the other end of the rotating rod (404) is connected to a first bevel gear (406). A second bevel gear (407) is provided on one side of the first bevel gear (406), and a connecting rod (408) is provided at the lower end of the second bevel gear (407). A third bevel gear (409) is provided on the side of the first bevel gear (406) away from the second bevel gear (407), and a connecting rod (410) is installed at the lower end of the third bevel gear (409). The lifting assembly (5) includes a connecting seat (501), and a connecting shaft (502) is installed at the lower end of the connecting seat (501). A pulley assembly (503) is sleeved on the outer side of the connecting shaft (502), and a lead screw (504) is installed at the lower end of the connecting shaft (502). A moving block (505) is sleeved on the outer side of the lead screw (504), and a vertical rod (506) is installed at the lower end of the middle position of the moving block (505). The auxiliary positioning component (6) includes a mounting groove (601), and a first spring (602) is placed in the mounting groove (601). A first slider (603) is provided on one side of the first spring (602). A convex ball (604) is installed at one end of the first slider (603), and a recess (605) is provided in the mounting chamber (3) at the corresponding position of the convex ball (604).

2. The convenient-to-turn flat gate valve according to claim 1, characterized in that: The lower end of the auxiliary positioning component (6) is connected to a gate plate (7), and a sealing component (8) is provided around the gate plate (7). A through groove (9) is provided on the gate plate (7), and a bottom frame (10) is provided at the bottom of the gate valve body (1), and a sealing seat (11) is installed in the bottom frame (10).

3. The easy-to-turn flat gate valve according to claim 1, characterized in that: The pneumatic telescopic rod (401) is detachably installed at the upper end of the mounting chamber (3), and the output end of the pneumatic telescopic rod (401) passes through the mounting chamber (3) and extends into its inner cavity. The rotating rod (404) passes through the movable seat (402) and extends to its outer side. The first bevel gear (406) meshes with the second bevel gear (407) and the third bevel gear (409) respectively.

4. The convenient-to-turn flat gate valve according to claim 1, characterized in that: The second bevel gear (407) is separated from the third bevel gear (409) by a certain distance. The connecting rod (408) passes through the third bevel gear (409) and extends to its outer side. The connecting rod (408) and the connecting rod (410) are respectively connected to the connecting seat (501).

5. A convenient-to-turn flat gate valve according to claim 1, characterized in that: The connecting shaft (502) is in multiple sets, and the multiple sets of connecting shaft (502) are connected together by a pulley set (503). The number of connecting shafts (502) matches the number of lead screws (504), and the lead screws (504) match the moving blocks (505).

6. A convenient-to-turn flat gate valve according to claim 1, characterized in that: The mounting groove (601) is arranged in two sets symmetrically within the moving block (505). The first slider (603) slides within the mounting groove (601). The convex ball (604) penetrates the mounting groove (601) and extends to its outer side. The concave hole (605) is in multiple sets. The multiple sets of concave holes (605) are evenly spaced on the inner wall of the mounting chamber (3), and the concave holes (605) match the convex balls (604).

7. A convenient-to-turn flat gate valve according to claim 2, characterized in that: The sealing assembly (8) includes a sealing gasket (801), and a screw (802) is installed around the gate valve housing (1). A pressure block (803) is provided at one end of the screw (802), and a placement groove (804) is provided on both sides of the pressure block (803). A second spring (805) is placed inside the placement groove (804). A second slider (806) is provided on one side of the second spring (805), and a protrusion (807) is connected to one end of the second slider (806). The gate valve housing (1) has a placement groove at the corresponding position of the sealing gasket (801), and multiple sets of equally spaced grooves (808) are provided on the inner wall of the placement groove.

8. A convenient-to-turn flat gate valve according to claim 7, characterized in that: The sealing gasket (801) has a U-shaped structure that matches the gate plate (7). The screw (802) is threadedly connected to the gate valve body (1), and there are multiple sets of screws (802). The multiple sets of screws (802) are symmetrically arranged. The pressure block (803) is slidably arranged in the opening placement groove.

9. A convenient-to-turn flat gate valve according to claim 7, characterized in that: The second slider (806) is slidably disposed in the placement groove (804), the protrusion (807) has a triangular cross-section, and the protrusion (807) matches the groove (808).

10. A convenient-to-turn flat gate valve according to claim 2, characterized in that: The gate (7) passes through the mounting compartment (3) and extends into the gate valve housing (1), and the through slot (9) matches the channel (2).

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