Gas gate valve

Abstract

The invention belongs to the technical field of gate valves, and provides a gas gate valve which comprises a transmission mechanism, a sealing upper cover body and a lower valve body. The sealing upper cover body is installed on the transmission mechanism, the lower valve body and the sealing upper cover body are fixed in a welded mode, and the self-cleaning mechanism is arranged at the end of one side of the transmission mechanism. The self-cleaning mechanism comprises a first telescopic shell, a second telescopic shell, a middle shell and extending grooves, the left side and the right side of the middle shell are sleeved with the first telescopic shell and the second telescopic shell respectively, and the first telescopic shell, the second telescopic shell and the middle shell are each provided with a plurality of extending grooves; the self-cleaning mechanism further comprises a first scraping and brushing mechanism, the first scraping and brushing mechanism comprises a second motor, a first three-extension plate, a first U-shaped block, a bent rod, a scraping and brushing plate, a second three-extension plate, a second U-shaped block, a telescopic connecting rod, a protruding strip and a return rod, impurities and sediments attached to the gateway can be automatically removed, the requirement for manual cleaning is reduced, the gateway is kept unblocked and clean, and the service life of the gateway is prolonged. And blockage and faults caused by impurity accumulation are prevented.

Description

Technical Field

[0001] The invention belongs to the technical field of gate valves, and provides a gate valve that can both autonomously clean a gate channel and autonomously lubricate a valve stem, in particular to a gas gate valve. Background Art

[0002] As an important shut-off device in the fluid control system, the long-term stable operation of the gate valve is crucial to the stability and safety of the entire system. Self-cleaning and self-lubrication technology helps to ensure the sealing performance and movement flexibility of the gate valve, reduce leakage, rust and other abnormal conditions, and thus improve the safety of the system. Equipment autonomous maintenance is a prevention-oriented equipment maintenance strategy, including internal cleaning of the gate valve and lubrication of the valve stem. It emphasizes maintaining the optimal operating state of the equipment through daily maintenance activities such as self-inspection, cleaning, lubrication and tightening by equipment operators. This strategy can effectively improve equipment reliability, reduce downtime and reduce maintenance costs. For gas gate valves, self-cleaning and self-lubrication are key elements that help extend the service life of the valve and improve operating efficiency.

[0003] In the existing technology, in the field of modern industry and energy, although technological innovation continues to promote the progress of various equipment and machinery, up to now, a gas gate valve that can have the function of self-cleaning has not been developed. This means that in the gas transmission and distribution system, the existing gate valve technology still relies on regular manual maintenance and inspection to remove the dirt and sediment that may accumulate, and to ensure that the sealing surface and moving parts of the valve are properly lubricated to prevent wear and extend the service life. The lack of this self-cleaning not only increases maintenance costs and operational complexity, but may also cause equipment failures and safety risks due to human errors or untimely maintenance. Summary of the invention

[0004] The present invention provides a gas gate valve. The purpose of the present invention is to provide a gas gate valve which can complete the autonomous cleaning of the valve channel of the gate valve by opening and closing the gate valve.

[0005] The technical solution of the present invention is as follows: a gas gate valve, comprising a transmission mechanism;

[0006] Sealing the upper cover body;

[0007] Lower valve body;

[0008] The sealing upper cover is mounted on the transmission mechanism, the lower valve body and the sealing upper cover are fixed by welding, and the self-cleaning mechanism is arranged at one end of the transmission mechanism;

[0009] The self-cleaning mechanism comprises a telescopic shell 1, a telescopic shell 2, a middle shell and an extension slot, wherein the telescopic shell 1 and the telescopic shell 2 are respectively sleeved on the left and right sides of the middle shell, and a plurality of extension slots are respectively provided on the telescopic shell 1, the telescopic shell 2 and the middle shell;

[0010] The self-cleaning mechanism also includes a scraping and brushing mechanism 1, which includes a motor 2, a three-extension plate 1, a U-shaped block 1, a bending rod, a scraping and brushing plate, a three-extension plate 2, a U-shaped block 2, a telescopic connecting rod, a convex strip and a return rod. A sleeve is fixedly sleeved on the output shaft of the motor 2, and the sleeve is fixedly connected to the three-extension plate 1. The return rod is movably inserted in the sleeve, and a strong spring is sleeved on the return rod. The three extension plates 2 are movably sleeved on the return rod. The three U-shaped blocks 1 and the three U-shaped blocks 2 are respectively inserted at the ends of the three extension plates 1 and the three extension plates 2. The three bending rods are all rotatably connected to the U-shaped block 1, and the three telescopic connecting rods are all rotatably connected to the U-shaped block 2. The three convex strips are all fixed to the middle part of the corresponding bending rods and are correspondingly rotatably connected to the three telescopic connecting rods.

[0011] It also includes a scraping and brushing mechanism 2, which has the same structure as the scraping and brushing mechanism 1. Two motors 2 are respectively fixed on the inner walls of the telescopic shell 1 and the telescopic shell 2.

[0012] Furthermore, the transmission mechanism includes a hand-cranked wheel, a follower rod, a first co-directional thread, a second co-directional thread, a ball screw sleeve 1, a right-angle rod 1, a ball screw sleeve 2, a right-angle rod 2, a gate, a connecting rod and a sealing block;

[0013] The follower rod is fixed to the bottom of the hand-cranked wheel, a valve stem is fixed to the bottom of the follower rod, a first same-direction thread is provided on the upper part of the valve stem, a second same-direction thread is provided on the lower part of the valve stem, a ball screw sleeve 1 is mounted on the upper part of the valve stem and is threadedly connected to the first same-direction thread, a ball screw sleeve 2 is mounted on the lower part of the valve stem and is threadedly connected to the second same-direction thread, a right-angle rod 1 is fixed to one side of the ball screw sleeve 1, a right-angle rod 2 is fixed to one side of the ball screw sleeve 2, a gate is fixed to the bottom end of the right-angle rod 2, a self-cleaning mechanism is fixed to the bottom end of the right-angle rod 2, a connecting rod is fixed to the bottom of the self-cleaning mechanism, and a sealing block is fixed to the bottom of the connecting rod;

[0014] By turning the hand wheel, the hand wheel drives the follower rod to rotate, the follower rod drives the valve stem to rotate, and the ball screw sleeve 1 and the ball screw sleeve 2 move on the valve stem, so that the ball screw sleeve 1 and the ball screw sleeve 2 on the same valve stem can move in the same direction at the same time. When the gate is in the closed state, the self-cleaning mechanism is in the working state, and when the gate is in the open state, the self-cleaning mechanism is in the resting state.

[0015] Further, the self-cleaning mechanism also includes a fixing mechanism, which includes a frame, a slider 1, a rack 1, a gear 1, a driven rod, a motor 1, a rack 2, a slider 2, a connecting block 1, a slide bar 1, a connecting block 2, a slide bar 2, a push rod 1, a push rod 2, a slide groove 1, a slide groove 2, a round hole, a fixing rod, a cap, a disc, an arc groove 1, an arc groove 2, a vertical pole 1, a vertical pole 2, a double-headed groove plate, a push plate 1, a push plate 2 and an arc support plate;

[0016] The slide groove 1 is opened on one side of the frame, the slide groove 2 is opened on the other side of the frame, the slider 1 is slidably installed on the slide groove 1, the slider 2 is slidably installed on the slide groove 2, the rack 1 is fixed on the slider 1, the rack 2 is fixed on the slider 2, the upper part of the gear 1 is meshed with the rack 1, and the lower part of the gear 1 is meshed with the rack 2, the motor 1 is arranged below the gear 1, the output shaft of the motor 1 is fixedly sleeved on the gear 1, the motor 1 is fixed below the gear 1 by a fixing rod, the coupling block 2 is fixed to one end of the rack 1, the coupling block 1 is fixed to one end of the rack 2, the two slide bars 1 and the slide bars 2 respectively slide the coupling block 1 and the coupling block 2 on the frame, the push rod 1 is rotatably installed on the coupling block 2, the push rod 2 is rotatably installed on the coupling block 1, and the two round holes are respectively opened on both sides of the frame;

[0017] The driven rod is fixed on the output end of the motor 1, the disc is fixedly sleeved on the driven rod, the arc groove 1 and the arc groove 2 are respectively opened on the disc, the double-headed groove plate is arranged under the disc, the push plate 1 and the push plate 2 are respectively slidably connected to the two ends of the double-headed groove plate, the vertical rod 1 and the vertical rod 2 are respectively fixed on the push plate 1 and the push plate 2, and inserted in the arc groove 2 and the arc groove 1, and two arc-shaped support plates are fixed at the ends of the push plate 1 and the push plate 2;

[0018] Among them, the return rods in the scraping and brushing mechanism 2 and the scraping and brushing mechanism 1 are respectively fixed to each other with the push rod 2 and the push rod 1 in the fixing mechanism, the motor 1 drives the driven rod to rotate, the driven rod drives the gear 1 to rotate, the gear 1 drives the rack 1 and the rack 2 to move in the same side or both sides, the rack 1 and the rack 2 drive the connecting block 2 and the connecting block 1 to move in the same side or both sides, the connecting block 2 and the connecting block 1 drive the push rod 1 and the push rod 2 to move in the same side or both sides, the push rod 1 and the push rod 2 drive the scraping and brushing mechanism 1 and the scraping and brushing mechanism 2 to move in the same side or both sides, and the driven rod also drives the disc to rotate, the disc drives the vertical rod 2 and the vertical rod 1 to move in the direction of the arc groove 1 and the arc groove 2, the vertical rod 2 and the vertical rod 1 drive the push plate 2 and the push plate 1 to move, and the push plate 2 and the push plate 1 drive the two arc support plates to move in the same direction or in reverse directions;

[0019] Start motor one, the output shaft of motor one rotates counterclockwise, driving the driven rod to rotate counterclockwise, the driven rod drives gear one to rotate counterclockwise, gear one drives rack two to slide inward, and drives rack one to slide inward as well, rack two drives connecting block two and push rod one to slide inward, rack one drives connecting block one and push rod two to slide inward, push rod one and push rod two drive two return rods to slide inward as well, three extension plate two presses against the frame, three extension plate two approaches three extension plate one, until the self-cleaning mechanism expands to the maximum angle so that it can resist the gate, then start motor two, motor two drives the sleeve to rotate, the sleeve drives three extension plate one to rotate, three extension plate one drives the scraper plate to rotate in the gate.

[0020] Furthermore, the lower valve body includes a connecting flange, a gate tube, a plate groove, a block groove and a block cavity, and the block cavity is used to accommodate the sealing block when the self-cleaning mechanism is in a working state.

[0021] Furthermore, in order to realize self-cleaning and self-lubricating the valve stem, the gas gate valve also includes a self-lubricating mechanism, which is arranged on the other side of the transmission mechanism; the self-cleaning mechanism and the self-lubricating mechanism work simultaneously;

[0022] The self-lubricating mechanism includes an oil storage frame, an elastic bent plate, an oil flow groove, a second gear, an oil flow hole, a refueling pipe and an oil filling hole. The refueling pipe is connected to the sealing upper cover body, the oil filling hole is opened at the connection of the refueling pipe, the oil storage frame is connected to one side of the refueling pipe, the elastic bent plate is plugged into one side of the oil storage frame, the oil flow groove is opened on the elastic bent plate, and the second gear is arranged on one side of the elastic bent plate and meshes with the valve stem;

[0023] Among them, by turning the hand wheel, the hand wheel drives the valve stem to rotate, the valve stem drives gear two to rotate, gear two drives the elastic bent plate to bend and deform, the oil storage frame is set at an inclined angle, and the lubricating oil in the oil storage frame flows into the outer edge of gear two along the oil flow groove on the elastic bent plate. Due to the rotation of the gear, the lubricating oil and the valve stem are in contact.

[0024] Furthermore, the third extension plate 2 is axially limited and circumferentially rotated relative to the return rod.

[0025] The beneficial effects of the present invention are:

[0026] The present invention uses a scraping and brushing mechanism driven by a motor, which can automatically remove impurities and sediments attached to the gate, reducing the need for manual cleaning and improving the efficiency and automation of cleaning work. The self-cleaning mechanism can keep the gate unobstructed and clean, which is crucial to preventing blockages and malfunctions caused by accumulation of impurities, ensuring the normal operation and long-term stability of the gas gate valve. The automated cleaning process reduces manual intervention, thereby reducing maintenance costs and potential safety risks.

[0027] The present invention uses an automatic lubrication system to continuously lubricate the valve stem and gears, reducing wear caused by friction, thereby extending the service life of valve components. Autonomous lubrication reduces the need for manual lubrication, reduces maintenance workload and maintenance costs, and continuous lubrication ensures smooth valve operation, improving the reliability and stability of the entire system.

[0028] The present invention can work simultaneously through the self-cleaning and self-lubricating mechanisms. Lubrication is carried out while cleaning is in progress. This coordinated operation improves the working efficiency of the entire system. During the valve operation process, cleaning and lubrication are carried out simultaneously to reduce the delay caused by waiting for cleaning or lubrication, and improve the response speed of the system. By cleaning and lubricating at the same time, the motor and other driving resources can be used more effectively, avoiding waste of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0032] Figure 3 It is a schematic diagram of the structure of the self-lubricating mechanism of the present invention;

[0033] Figure 4 It is a schematic diagram of the structure of the lower valve body of the present invention;

[0034] Figure 5 For the present invention Figure 2 A magnified view of the structure at A;

[0035] Figure 6 It is a schematic diagram of the planar structure of the self-cleaning mechanism of the present invention as viewed from above;

[0036] Figure 7 It is a schematic diagram of a partial top plan structure of a fixing mechanism in the self-cleaning mechanism of the present invention;

[0037] Figure 8 It is a partial side structural schematic diagram of the fixing mechanism in the self-cleaning mechanism of the present invention;

[0038] Fig. 9 It is a schematic diagram of a partial bottom view of the fixing mechanism in the self-cleaning mechanism of the present invention;

[0039] Fig.10 It is a schematic diagram of the planar structure of the fixing mechanism in the self-cleaning mechanism of the present invention in a supporting state;

[0040] Fig.11It is a structural schematic diagram of the scraping and brushing mechanism 1 in the self-cleaning mechanism of the present invention.

[0041] In the figure: 1, transmission mechanism; 101, hand wheel; 102, follower rod; 103, first co-directional thread; 104, second co-directional thread; 105, ball screw sleeve 1; 106, right angle rod 1; 107, ball screw sleeve 2; 108, right angle rod 2; 109, gate; 110, connecting rod; 111, sealing block;

[0042] 2. Seal the upper cover;

[0043] 3. Lower valve body; 301. Connecting flange; 302. Gate pipe; 303. Plate slot; 304. Block slot; 305. Block cavity;

[0044] 4. Self-cleaning mechanism; 401. Telescopic shell 1; 402. Telescopic shell 2; 403. Middle shell; 404. Extension slot;

[0045] 405, fixing mechanism; 4051, frame; 4052, slider 1; 4053, rack 1; 4054, gear 1; 4055, driven rod; 4056, motor 1; 4057, rack 2; 4058, slider 2; 4059, link block 1; 4060, slider 1; 4061, link block 2; 4062, slider 2; 4063, push rod 1; 4064, Push rod 2; 4065, slide slot 1; 4066, slide slot 2; 4067, round hole; 4068, fixing rod; 4069, cap; 4070, disc; 4071, arc slot 1; 4072, arc slot 2; 4073, vertical pole 1; 4074, vertical pole 2; 4075, double-headed slot plate; 4076, push plate 1; 4077, push plate 2; 4078, arc support plate;

[0046] 410, scraping and brushing mechanism 1; 4101, motor 2; 4102, three extension plate 1; 4103, U-shaped block 1; 4104, bending rod; 4105, scraping and brushing plate; 4106, three extension plate 2; 4107, U-shaped block 2; 4108, telescopic connecting rod; 4109, convex strip; 4120, return rod;

[0047] 411, scraping mechanism 2;

[0048] 5. Self-lubricating mechanism; 501. Oil storage frame; 502. Elastic bent plate; 503. Oil flow groove; 504. Gear 2; 505. Oil flow hole; 506. Oil filling pipe; 507. Oil filling hole. DETAILED DESCRIPTION

[0049] The following will be combined with 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.

[0050] Example 1

[0051] like Figures 1 to 11 As shown, this embodiment proposes a gas gate valve, including a transmission mechanism 1, a sealing upper cover body 2, a lower valve body 3, a self-cleaning mechanism 4 and a self-lubricating mechanism 5, wherein the sealing upper cover body 2 is mounted on the transmission mechanism 1, the self-cleaning mechanism 4 is arranged at one end of the transmission mechanism 1, the lower valve body 3 and the sealing upper cover body 2 are welded and fixed, and the self-lubricating mechanism 5 is arranged at the other side of the transmission mechanism 1;

[0052] The self-cleaning mechanism 4 and the self-lubricating mechanism 5 can work simultaneously.

[0053] like Figure 1 , 2 As shown, the transmission mechanism 1 includes a hand wheel 101, a follower rod 102, a first co-directional thread 103, a second co-directional thread 104, a ball screw sleeve 105, a right angle rod 106, a ball screw sleeve 2 107, a right angle rod 2 108, a gate 109, a connecting rod 110 and a sealing block 111;

[0054] The follower rod 102 is fixed to the bottom of the hand-cranked wheel 101, a valve stem is fixed to the bottom of the follower rod 102, a first unidirectional thread 103 is provided on the upper part of the valve stem, a second unidirectional thread 104 is provided on the lower part of the valve stem, a ball screw sleeve 105 is mounted on the upper part of the valve stem, and is threadedly connected to the first unidirectional thread 103, a ball screw sleeve 2 107 is mounted on the lower part of the valve stem, and is threadedly connected to the second unidirectional thread 104, a right-angle rod 106 is fixed to one side of the ball screw sleeve 105, a right-angle rod 2 108 is fixed to one side of the ball screw sleeve 2 107, a gate plate 109 is fixed to the bottom end of the right-angle rod 2 108, a self-cleaning mechanism 4 is fixed to the bottom end of the right-angle rod 2 108, a connecting rod 110 is fixed to the bottom of the self-cleaning mechanism 4, and a sealing block 111 is fixed to the bottom of the connecting rod 110;

[0055] By rotating the hand wheel 101, the hand wheel 101 drives the follower rod 102 to rotate, and the follower rod 102 drives the valve stem to rotate, and the ball screw sleeve 105 and the ball screw sleeve 2 107 move on the valve stem. Because the surface of the valve stem is provided with two sections of threads with the same direction but no interference, the ball screw sleeve 105 and the ball screw sleeve 2 107 on the same valve stem can move in the same direction at the same time, and when the gate plate 109 is in the closed state, the self-cleaning mechanism 4 is in the working state, and when the gate plate 109 is in the open state, the self-cleaning mechanism 4 is in the resting state.

[0056] In this embodiment, the hand wheel 101 is fixedly connected to the follower rod 102. When the hand wheel 101 rotates, the follower rod 102 also rotates. A valve stem is fixed to the bottom of the follower rod 102. The rotation of the follower rod 102 drives the valve stem to rotate. The upper part of the valve stem is provided with a first unidirectional thread 103, and the lower part is provided with a second unidirectional thread 104. This design allows two ball screw sleeves to be installed on the valve stem at the same time, and the two ball screw sleeves can move independently. The ball screw sleeve 105 is installed on the upper part of the valve stem and is threadedly connected to the first co-directional thread 103. The ball screw sleeve 2 107 is installed on the lower part of the valve stem and is threadedly connected to the second co-directional thread 104. The right-angle rod 106 is fixed to one side of the ball screw sleeve 105, the right-angle rod 2 108 is fixed to one side of the ball screw sleeve 2 107, the gate plate 109 is fixed to the bottom end of the right-angle rod 2 108, and the self-cleaning mechanism 4 is also fixed to the bottom end of the right-angle rod 2 108. The connecting rod 110 is fixed to the bottom of the self-cleaning mechanism 4, and the sealing block 111 is fixed to the bottom of the connecting rod 110.

[0057] It should also be noted that the side of the lower valve body 3 close to the gate plate 109 is the air inlet, and the side close to the self-cleaning mechanism 4 is the air outlet.

[0058] Working principle: When the hand-cranked wheel 101 rotates, it drives the follower rod 102 and the valve stem to rotate. Since the thread directions of the upper and lower parts of the valve stem are the same, the ball screw sleeve 105 and the ball screw sleeve 2 107 can move independently and in the same direction on the valve stem. When the ball screw sleeve 105 moves upward, the first unidirectional thread 103 will drive the right-angle rod 106 and the gate plate 109 connected thereto to move upward, and the ball screw sleeve 2 107 also moves upward. The second unidirectional thread 104 will drive the right-angle rod 2 108 and the self-cleaning mechanism 4 connected thereto to move upward, and the gate plate 109 and the sealing block 111 can move in the same direction at the same time to realize the opening and closing of the gate plate 109 and the switching of the resting and working states of the self-cleaning mechanism 4.

[0059] Example 2

[0060] like Figure 1 , 5 As shown, on the basis of Example 1, this embodiment further proposes a structure of a gas gate valve, which specifically also includes the following structure: the self-cleaning mechanism 4 includes a telescopic shell 1 401, a telescopic shell 2 402, a middle shell 403 and a protruding groove 404, the telescopic shell 1 401 and the telescopic shell 2 402 are respectively sleeved on the left and right sides of the middle shell 403, and the telescopic shell 1 401, the telescopic shell 2 402 and the middle shell 403 are respectively provided with a plurality of protruding grooves 404;

[0061] like Figure 6 , 11As shown, the self-cleaning mechanism 4 also includes a scraping mechanism 410, which includes a motor 4101, a three-extension plate 4102, a U-shaped block 4103, a bending rod 4104, a scraping plate 4105, a three-extension plate 4106, a U-shaped block 4107, a telescopic connecting rod 4108, a convex strip 4109 and a return rod 4120. A sleeve is fixedly sleeved on the output shaft of the motor 4101, and the sleeve is fixedly connected to the three-extension plate 4102. The return rod 4120 is movably inserted in the sleeve, and a strong spring is sleeved on the return rod 4120. The three-extension plate 4102 is fixedly connected to the three-extension plate 4102. 106 is movably sleeved on the return rod 4120, specifically, the three extension plates 4106 are axially limited relative to the return rod 4120 and rotate circumferentially; three U-shaped blocks 1 4103 and three U-shaped blocks 2 4107 are respectively inserted at the ends of the three extension plates 1 4102 and the three extension plates 2 4106, three bending rods 4104 are all rotatably connected to the U-shaped block 1 4103, three telescopic connecting rods 4108 are all rotatably connected to the U-shaped block 2 4107, and three convex strips 4109 are all fixed to the middle of the corresponding bending rods 4104, and are correspondingly rotatably connected to the three telescopic connecting rods 4108;

[0062] It also includes a second scraping and brushing mechanism 411 , which has the same structure as the first scraping and brushing mechanism 410 . Two second motors 4101 are respectively fixed on the inner walls of the first telescopic shell 401 and the second telescopic shell 402 .

[0063] like Figure 7 to Figure 10 As shown, the self-cleaning mechanism 4 also includes a fixing mechanism 405, which includes a frame 4051, a slider 1 4052, a rack 1 4053, a gear 1 4054, a driven rod 4055, a motor 1 4056, a rack 2 4057, a slider 2 4058, a coupling block 1 4059, a slide bar 1 4060, a coupling block 2 4061, a slide bar 2 4062, a push rod 1 4063, a push rod 2 4064, a chute 1 4065, a chute 2 4066, a round hole 4067, a fixing rod 4068, a cap 4069, a disc 4070, an arc groove 1 4071, an arc groove 2 4072, a vertical rod 1 4073, a vertical rod 2 4074, a double-headed groove plate 4075, a push plate 1 4076, a push plate 2 4077 and an arc support plate 4078;

[0064] Slide groove 1 4065 is provided on one side of frame 4051, slide groove 2 4066 is provided on the other side of frame 4051, slider 1 4052 is slidably mounted on slide groove 1 4065, slider 2 4058 is slidably mounted on slide groove 2 4066, rack 1 4053 is fixed on slider 1 4052, rack 2 4057 is fixed on slider 2 4058, the upper part of gear 1 4054 is meshed with rack 1 4053, the lower part of gear 1 4054 is meshed with rack 2 4057, motor 1 4056 is provided below gear 1 4054, and the output shaft of motor 1 4056 is fixed. The motor 1 4056 is located below the gear 1 4054 and fixed by a fixing rod 4068. The second link block 4061 is fixed to one end of the rack 1 4053. The first link block 4059 is fixed to one end of the rack 2 4057. Two slide bars 1 4060 and two slide bars 2 4062 respectively slide the corresponding link blocks 1 4059 and 4061 on the frame 4051. The push rod 1 4063 is fixed to the link block 2 4061. The push rod 2 4064 is fixed to the link block 1 4059. Two round holes 4067 are respectively opened on both sides of the frame 4051.

[0065] The driven rod 4055 is fixed on the output end of the motor 1 4056, the disc 4070 is fixedly sleeved on the driven rod 4055, the arc groove 1 4071 and the arc groove 2 4072 are respectively opened on the disc 4070, the double-headed groove plate 4075 is arranged below the disc 4070, the push plate 1 4076 and the push plate 2 4077 are respectively slidably connected to the two ends of the double-headed groove plate 4075, the vertical rod 1 4073 and the vertical rod 2 4074 are respectively fixed on the push plate 1 4076 and the push plate 2 4077, and inserted into the arc groove 2 4072 and the arc groove 1 4071, and two arc-shaped support plates 4078 are fixed at the ends of the push plate 1 4076 and the push plate 2 4077;

[0066] In this embodiment, the return rod 4120 in the scraping mechanism 2 411 and the scraping mechanism 1 410 is respectively fixed to the corresponding push rod 2 4064 and push rod 1 4063 in the fixing mechanism 405, the motor 1 4056 drives the driven rod 4055 to rotate, the driven rod 4055 drives the gear 1 4054 to rotate, the gear 1 4054 drives the rack 1 4053 and the rack 2 4057 to move in the same direction or in reverse, the rack 1 4053 and the rack 2 4057 drive the connecting block 2 4061 and the connecting block 1 4059 to move in the same direction or in reverse, and the connecting block 2 4061 and the connecting block 1 4059 drive the push rod 1 4063 The push rod 1 4063 and the push rod 2 4064 drive the scraping mechanism 1 410 and the scraping mechanism 2 411 to move in the same direction or in the opposite direction. In addition, the driven rod 4055 also drives the disc 4070 to rotate, and the disc 4070 drives the vertical rod 2 4074 and the vertical rod 1 4073 to move along the direction of the arc groove 1 4071 and the arc groove 2 4072. The vertical rod 2 4074 and the vertical rod 1 4073 drive the push plate 2 4077 and the push plate 1 4076 to move, and the push plate 2 4077 and the push plate 1 4076 drive the two arc support plates 4078 to move in the same direction or in the opposite direction.

[0067] Start motor 1 4056, the output shaft of motor 1 4056 rotates counterclockwise, driving driven rod 4055 to rotate counterclockwise, driven rod 4055 drives gear 1 4054 to rotate counterclockwise, gear 1 4054 drives rack 2 4057 to slide inward, and drives rack 1 4053 to slide inward, rack 2 4057 drives connecting block 2 4061 and push rod 1 4063 to slide inward, rack 1 4053 drives connecting block 1 4059 and push rod 2 4064 to slide inward, push rod 1 4054 ...7 and push rod 1 4057. 063 and the push rod 2 4064 drive the two return rods 4120 to slide inwards, the three extension plates 2 4106 press against the frame 4051, and the three extension plates 2 4106 are close to the three extension plates 1 4102 until the self-cleaning mechanism 4 expands to the maximum angle so that it can resist the gate, and then the motor 2 4101 can be started, the motor 2 4101 drives the sleeve to rotate, the sleeve drives the three extension plates 1 4102 to rotate, and the three extension plates 1 4102 drives the scraper plate 4105 to rotate in the gate, and the cleaning operation can be carried out;

[0068] After the cleaning operation is completed, the motor 1 4056 is started, and the output shaft of the motor 1 4056 rotates clockwise, driving the driven rod 4055 to rotate clockwise, and the driven rod 4055 drives the gear 1 4054 to rotate clockwise, and the gear 1 4054 drives the rack 2 4057 to slide outward, and drives the rack 1 4053 to slide outward as well, and the rack 2 4057 drives the connecting block 2 4061 and the push rod 1 4063 to slide outward, and the rack 1 4053 drives the connecting block 1 4059 and the push rod 2 4064 to slide outward as well, and the push rod 1 4063 and the push rod 2 4064 drive the two return rods 4120 to slide outward as well, and the three extension plates 2 4106 return to the initial position due to the elastic potential energy of the strong spring, that is, the state where the self-cleaning mechanism 4 is folded, and the cleaning operation is completed;

[0069] It should also be noted that when the output shaft of motor 1 4056 rotates counterclockwise, it also drives the disc 4070 to rotate counterclockwise, and the number of rotations of the output shaft of motor 2 4101 required for the supporting operation of the fixing mechanism 405 and the expansion operation of the self-cleaning mechanism 4 is the same; when the output shaft of motor 1 4056 rotates clockwise, it also drives the disc 4070 to rotate clockwise, and the number of rotations of the output shaft of motor 2 4101 required for the plate retracting operation of the fixing mechanism 405 and the retracting operation of the self-cleaning mechanism 4 are also the same.

[0070] The self-cleaning mechanism 4 realizes effective cleaning of the gate surface through the coordinated work of the motor-driven scraping mechanism and the fixing mechanism 405, keeps the gate unobstructed and clean, reduces the need for manual cleaning, and improves the degree of automation. The scraping mechanism 1 410 and the scraping mechanism 2 411 are driven by the motor to scrape and clean the gate surface. The scraping plate 4105 and the convex strip 4109 and other components are in contact with the gate surface, and impurities and sediments attached to the gate are removed through mechanical movement. During the cleaning process, the movement of the scraping mechanism will remove the debris deposited on the filter.

[0071] Example 3

[0072] like Figure 1 , 4 As shown, the lower valve body 3 includes a connecting flange 301, a gate tube 302, a plate groove 303, a block groove 304 and a block cavity 305, and the block cavity 305 is used to accommodate the sealing block 111 when the self-cleaning mechanism 4 is in a working state.

[0073] like Figure 2 , 3As shown, the self-lubricating mechanism 5 includes an oil storage frame 501, an elastic bent plate 502, an oil flow groove 503, a gear 2 504, an oil flow hole 505, a refueling pipe 506 and an oil filling hole 507. The refueling pipe 506 is connected to the sealing upper cover 2, and the oil filling hole 507 is provided at the connection of the refueling pipe 506. The oil storage frame 501 is connected to one side of the refueling pipe 506, the elastic bent plate 502 is plugged into one side of the oil storage frame 501, the oil flow groove 503 is provided on the elastic bent plate 502, and the gear 2 504 is provided on one side of the elastic bent plate 502 and meshes with the valve stem;

[0074] Among them, by rotating the hand wheel 101, the hand wheel 101 drives the valve stem to rotate, the valve stem drives the gear 2 504 to rotate, the gear 2 504 drives the elastic bent plate 502 to bend and deform, the oil storage frame 501 is set at an inclined angle, and the lubricating oil in the oil storage frame 501 flows into the outer edge of the gear 2 504 along the oil flow groove 503 on the elastic bent plate 502. Due to the rotation of the gear, the lubricating oil and the valve stem are in contact.

[0075] In this embodiment, the oil storage frame 501 is used to store lubricating oil. It is connected to one side of the filling pipe 506. The filling pipe 506 is connected to the sealed upper cover body 2, so that lubricating oil can be easily added to the oil storage frame 501. The filling pipe 506 is used to introduce lubricating oil from the outside into the oil storage frame 501, and the oil filling hole 507 is a hole opened at the connection of the filling pipe 506, which is used as the injection point when actually adding lubricating oil. The elastic bent plate 502 is plugged into one side of the oil storage frame 501, and an oil flow groove 503 is opened on it. The function of the oil flow groove 503 is to guide the lubricating oil in the oil storage frame 501 to flow to Gear 2 504, Gear 2 504 meshes with the valve stem. When the hand wheel 101 rotates, the rotation of the valve stem drives Gear 2 504 to rotate. As Gear 2 504 rotates, the elastic bent plate 502 in contact with it will bend and deform. This deformation helps the lubricating oil to flow from the oil storage frame 501 through the oil flow groove 503 to the outer edge of Gear 2 504. The oil storage frame 501 is set at an inclined angle, which is conducive to the lubricating oil flowing along the oil flow groove 503 on the elastic bent plate 502 under the action of gravity. The rotation of Gear 2 504 causes the lubricating oil to be brought to its outer edge and contact the valve stem. In this way, the valve stem can be continuously lubricated when it rotates. The design of the entire self-lubricating mechanism 5 enables the lubricating oil to automatically flow to the part that needs lubrication, that is, the contact surface between the valve stem and Gear 2 504, without the need for manual intervention, to achieve autonomous lubrication.

[0076] The connecting flange 301 is used to connect the lower valve body 3 with other components, such as pipes, flanges, etc., to ensure the sealing and structural stability of the valve as a whole. The plate groove 303 and the block groove 304 are used for the entry and exit of the gate plate 109 and the sealing block 111. The sealing block 111 can block and seal the block groove 304 on the gate pipe 302 when the gate valve is in a closed state.

[0077] The block cavity 305 is a space specially designed to accommodate the sealing block 111, especially when the self-cleaning mechanism 4 is in working state, to ensure that the sealing block 111 can be correctly placed and moved.

[0078] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gas gate valve, characterized in that: Including transmission mechanism; Sealing the upper cover body; Lower valve body; The sealing upper cover is mounted on the transmission mechanism, the lower valve body and the sealing upper cover are fixed by welding, and the self-cleaning mechanism is arranged at one end of the transmission mechanism; The self-cleaning mechanism comprises a telescopic shell 1, a telescopic shell 2, a middle shell and an extension slot, wherein the telescopic shell 1 and the telescopic shell 2 are respectively sleeved on the left and right sides of the middle shell, and a plurality of extension slots are respectively provided on the telescopic shell 1, the telescopic shell 2 and the middle shell; The self-cleaning mechanism also includes a scraping and brushing mechanism 1, which includes a motor 2, a three-extension plate 1, a U-shaped block 1, a bending rod, a scraping and brushing plate, a three-extension plate 2, a U-shaped block 2, a telescopic connecting rod, a convex strip and a return rod. A sleeve is fixedly sleeved on the output shaft of the motor 2, and the sleeve is fixedly connected to the three-extension plate 1. The return rod is movably inserted in the sleeve, and a strong spring is sleeved on the return rod. The three extension plates 2 are movably sleeved on the return rod. The three U-shaped blocks 1 and the three U-shaped blocks 2 are respectively inserted at the ends of the three extension plates 1 and the three extension plates 2. The three bending rods are all rotatably connected to the U-shaped block 1, and the three telescopic connecting rods are all rotatably connected to the U-shaped block 2. The three convex strips are all fixed to the middle part of the corresponding bending rods and are correspondingly rotatably connected to the three telescopic connecting rods. It also includes a scraping and brushing mechanism 2, which has the same structure as the scraping and brushing mechanism 1. Two motors 2 are respectively fixed on the inner walls of the telescopic shell 1 and the telescopic shell 2.

2. A gas gate valve according to claim 1, characterized in that: The transmission mechanism includes a hand-cranked wheel, a follower rod, a first co-directional thread, a second co-directional thread, a first ball screw sleeve, a first right-angle rod, a second ball screw sleeve, a second right-angle rod, a gate, a connecting rod and a sealing block; The follower rod is fixed to the bottom of the hand-cranked wheel, a valve stem is fixed to the bottom of the follower rod, a first same-direction thread is provided on the upper part of the valve stem, a second same-direction thread is provided on the lower part of the valve stem, a ball screw sleeve 1 is mounted on the upper part of the valve stem and is threadedly connected to the first same-direction thread, a ball screw sleeve 2 is mounted on the lower part of the valve stem and is threadedly connected to the second same-direction thread, a right-angle rod 1 is fixed to one side of the ball screw sleeve 1, a right-angle rod 2 is fixed to one side of the ball screw sleeve 2, a gate is fixed to the bottom end of the right-angle rod 2, a self-cleaning mechanism is fixed to the bottom end of the right-angle rod 2, a connecting rod is fixed to the bottom of the self-cleaning mechanism, and a sealing block is fixed to the bottom of the connecting rod; By turning the hand wheel, the hand wheel drives the follower rod to rotate, the follower rod drives the valve stem to rotate, and the ball screw sleeve 1 and the ball screw sleeve 2 move on the valve stem, so that the ball screw sleeve 1 and the ball screw sleeve 2 on the same valve stem can move in the same direction at the same time. When the gate is in the closed state, the self-cleaning mechanism is in the working state, and when the gate is in the open state, the self-cleaning mechanism is in the resting state.

3. A gas gate valve according to claim 1, characterized in that: The self-cleaning mechanism also includes a fixing mechanism, which includes a frame, a slider 1, a rack 1, a gear 1, a driven rod, a motor 1, a rack 2, a slider 2, a connecting block 1, a sliding bar 1, a connecting block 2, a sliding bar 2, a push rod 1, a push rod 2, a slide groove 1, a slide groove 2, a round hole, a fixing rod, a cap, a disc, an arc groove 1, an arc groove 2, a vertical pole 1, a vertical pole 2, a double-headed groove plate, a push plate 1, a push plate 2 and an arc support plate; The slide groove 1 is opened on one side of the frame, the slide groove 2 is opened on the other side of the frame, the slider 1 is slidably installed on the slide groove 1, the slider 2 is slidably installed on the slide groove 2, the rack 1 is fixed on the slider 1, the rack 2 is fixed on the slider 2, the upper part of the gear 1 is meshed with the rack 1, and the lower part of the gear 1 is meshed with the rack 2, the motor 1 is arranged below the gear 1, the output shaft of the motor 1 is fixedly sleeved on the gear 1, the motor 1 is fixed below the gear 1 by a fixing rod, the coupling block 2 is fixed to one end of the rack 1, the coupling block 1 is fixed to one end of the rack 2, the two slide bars 1 and the slide bars 2 respectively slide the coupling block 1 and the coupling block 2 on the frame, the push rod 1 is rotatably installed on the coupling block 2, the push rod 2 is rotatably installed on the coupling block 1, and the two round holes are respectively opened on both sides of the frame; The driven rod is fixed on the output end of the motor 1, the disc is fixedly sleeved on the driven rod, the arc groove 1 and the arc groove 2 are respectively opened on the disc, the double-headed groove plate is arranged under the disc, the push plate 1 and the push plate 2 are respectively slidably connected to the two ends of the double-headed groove plate, the vertical rod 1 and the vertical rod 2 are respectively fixed on the push plate 1 and the push plate 2, and inserted in the arc groove 2 and the arc groove 1, and two arc-shaped support plates are fixed at the ends of the push plate 1 and the push plate 2; Among them, the return rods in the scraping and brushing mechanism 2 and the scraping and brushing mechanism 1 are respectively fixed to each other with the push rod 2 and the push rod 1 in the fixing mechanism, the motor 1 drives the driven rod to rotate, the driven rod drives the gear 1 to rotate, the gear 1 drives the rack 1 and the rack 2 to move in the same side or both sides, the rack 1 and the rack 2 drive the connecting block 2 and the connecting block 1 to move in the same side or both sides, the connecting block 2 and the connecting block 1 drive the push rod 1 and the push rod 2 to move in the same side or both sides, the push rod 1 and the push rod 2 drive the scraping and brushing mechanism 1 and the scraping and brushing mechanism 2 to move in the same side or both sides, and the driven rod also drives the disc to rotate, the disc drives the vertical rod 2 and the vertical rod 1 to move in the direction of the arc groove 1 and the arc groove 2, the vertical rod 2 and the vertical rod 1 drive the push plate 2 and the push plate 1 to move, and the push plate 2 and the push plate 1 drive the two arc support plates to move in the same direction or in reverse directions; Start motor one, the output shaft of motor one rotates counterclockwise, driving the driven rod to rotate counterclockwise, the driven rod drives gear one to rotate counterclockwise, gear one drives rack two to slide inward, and drives rack one to slide inward as well, rack two drives connecting block two and push rod one to slide inward, rack one drives connecting block one and push rod two to slide inward, push rod one and push rod two drive two return rods to slide inward as well, three extension plate two presses against the frame, three extension plate two approaches three extension plate one, until the self-cleaning mechanism expands to the maximum angle so that it can resist the gate, then start motor two, motor two drives the sleeve to rotate, the sleeve drives three extension plate one to rotate, three extension plate one drives the scraper plate to rotate in the gate.

4. A gas gate valve according to claim 2, characterized in that: The lower valve body comprises a connecting flange, a gate tube, a plate groove, a block groove and a block cavity, and the block cavity is used to accommodate the sealing block when the self-cleaning mechanism is in a working state.

5. A gas gate valve according to claim 2, characterized in that: It also includes a self-lubricating mechanism, which is arranged on the other side of the transmission mechanism; the self-cleaning mechanism and the self-lubricating mechanism work simultaneously; The self-lubricating mechanism includes an oil storage frame, an elastic bent plate, an oil flow groove, a second gear, an oil flow hole, a refueling pipe and an oil filling hole. The refueling pipe is connected to the sealing upper cover body, the oil filling hole is opened at the connection of the refueling pipe, the oil storage frame is connected to one side of the refueling pipe, the elastic bent plate is plugged into one side of the oil storage frame, the oil flow groove is opened on the elastic bent plate, and the second gear is arranged on one side of the elastic bent plate and meshes with the valve stem; Among them, by turning the hand wheel, the hand wheel drives the valve stem to rotate, the valve stem drives gear two to rotate, gear two drives the elastic bent plate to bend and deform, the oil storage frame is set at an inclined angle, and the lubricating oil in the oil storage frame flows into the outer edge of gear two along the oil flow groove on the elastic bent plate. Due to the rotation of the gear, the lubricating oil and the valve stem are in contact.

6. A gas gate valve according to claim 1, characterized in that: The three extension plates are axially limited and circumferentially rotated relative to the return rod.

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