A pneumatic lifting valve interlocking sealing structure

Abstract

The present invention discloses a pneumatic lifting valve interlocking sealing structure, which belongs to the technical field of lifting valves, and comprises a valve body, two groups of lifting valve mechanisms are arranged inside the valve body, a partition is arranged inside the valve body, and a connecting port 2 and a connecting port 1 are opened on the surface of the valve body corresponding to the lifting valve. In the present invention, when the valve plate and the partition are fitted, two groups of annular sealing soft seals are formed by the soft rings arranged on the piston ring and the partition, so as to improve the filling effect of the gap, reduce the poor sealing caused by the reduced fitting degree of the valve plate and the partition, and ensure the sealing performance. At the same time, during the sealing process, when the valve plate moves downward, the pressure gas can be filled between the two groups of soft rings, and the pressure between the two groups of soft rings can be increased to reduce the pressure difference between the two groups of soft rings and the external closed gas, so as to improve the sealing effect. In addition, when the soft ring leaks, the movement of the lower piston can trigger the touch switch to send out an automatic alarm, so as to timely discover and reduce the harm of the leakage.

Description

Technical Field

[0001] The invention relates to the technical field of lift valves, and in particular to an interlocking sealing structure of a pneumatic lift valve. Background Art

[0002] A pneumatic lift valve is a valve that uses compressed air as a power source to drive the valve body for sealing or passage. The pneumatic lift valve has rapid action, fast response speed, simple and compact structure, and can be automatically controlled. It is widely used in gas circulation and transportation in industrial production and manufacturing.

[0003] In the prior art, most pneumatic lift valves in the industrial field generally use steel-to-steel hard seals to ensure service life and simplify components. The valve plate and the sealing flange are pressed together to achieve sealing. However, the exhaust gas generated in the industrial production process carries residual temperature, and the exhaust gas temperature of the production steps involving hot processing is even higher. This hot exhaust gas can easily cause deformation and expansion of the valve plate and flange seal, resulting in poor fit and affecting the sealing.

[0004] How to invent a pneumatic lifting valve interlocking sealing structure to improve these problems has become an urgent problem to be solved by technical personnel in this field. Summary of the invention

[0005] In order to make up for the above shortcomings, the present invention provides a pneumatic lifting valve interlocking sealing structure, aiming to improve the problems raised by the above background technology.

[0006] The present invention is achieved in that:

[0007] The present invention provides a pneumatic lifting valve interlocking sealing structure, comprising a valve body, two sets of lifting valve mechanisms are arranged inside the valve body, a partition is arranged inside the valve body, a second communication port and a first communication port corresponding to the lifting valve are opened on the surface of the valve body, the lifting valve mechanism comprises a cylinder arranged on the top of the valve body, a connecting rod is connected to the telescopic shaft of the cylinder, a valve plate is connected to the bottom of the connecting rod, a valve port corresponding to the valve plate is opened on the partition, and a soft sealing mechanism is arranged between the valve plate and the partition;

[0008] The soft sealing mechanism includes an airtight groove provided in the partition, a piston ring is sleeved inside the airtight groove, a soft ring is arranged on the top of the piston ring and the top of the partition, an air injection port is provided inside the valve plate, the bottom of the air injection port is provided between the two groups of soft rings, an airtight cylinder is provided inside the valve body, a piston block is fixedly installed on the side wall of the connecting rod, an upper piston is provided on the top of the piston block, a lower piston is provided on the bottom of the piston block, a spring 1 is connected between the piston block and the upper piston, a spring 2 is connected between the piston block and the lower piston, the piston block, the upper piston and the lower piston are all movably sleeved with the inner side wall of the airtight cylinder, the upper piston and the lower piston are slidably connected to the outer side wall of the connecting rod, an airtight cavity is provided on the outer side wall of the airtight cylinder, a plunger block is provided inside the airtight cavity, a connecting groove is provided between the airtight cylinder and the airtight cavity, an exhaust port is provided on the side wall of the airtight cavity, an air inlet pipe is connected between the exhaust port and the air injection port, a touch switch is provided at the inner bottom of the airtight cylinder, and a blowing mechanism and an anti-deformation mechanism are also provided inside the valve body.

[0009] Preferably, an air hole is provided on the inner top of the airtight cavity.

[0010] Preferably, the blowing mechanism includes an air path duct opened inside the piston ring, the top of the air path duct is rotatably connected to an air nozzle through a rotating shaft, the outer wall of the air nozzle is provided with a magnetic ring, the top of the partition is provided with a magnetic block 1 designed corresponding to the magnetic pole of the magnetic ring, and the interior of the piston ring is located above the air nozzle and a magnetic block 2 designed corresponding to the magnetic pole of the magnetic ring is provided.

[0011] Preferably, the end of the air nozzle close to the air pipeline is designed to be horizontal, and the other end of the air nozzle is designed to be inclined.

[0012] Preferably, the anti-deformation mechanism includes a liquid path groove 1 and a liquid path groove 2 opened inside the valve plate, a liquid storage cavity is arranged on the top of the valve body, a liquid pipe 1 is connected above the liquid path groove 1 and the inner cavity of the air-tight cylinder, a liquid pipe 4 is connected between the liquid path groove 2 and the liquid storage cavity, and a liquid pipe 3 is connected above the liquid storage cavity and the inner cavity of the air-tight cylinder, a sealing groove is arranged inside the valve plate, the sealing groove is connected with the liquid path groove 1 and the liquid path groove 2, a valve block is slidably connected inside the sealing groove, a horizontal groove connecting the liquid path groove 1 and the liquid path groove 2 is arranged inside the valve block, a spiral air pipe is arranged inside the valve plate, the spiral air pipe is arranged with multiple turns around the axis of the valve plate, each group of spiral air pipes is connected, and the spiral air pipe is provided with a group of channels connected to the bottom of the sealing groove.

[0013] Preferably, the first and second liquid path grooves are disposed close to the contact position between the valve plate and the valve port.

[0014] Preferably, one-way valves are provided inside the liquid pipe 1 and the liquid pipe 3.

[0015] In summary, the beneficial effects of the present invention are:

[0016] 1. When the valve plate and the partition are fitted, two groups of annular soft seals are formed by the soft rings arranged on the piston ring and the partition, which improves the filling effect of the gap, reduces the deterioration of the sealing caused by the reduced fitting degree of the valve plate and the partition, and ensures the sealing. At the same time, when the valve plate moves down during the sealing process, the pressure gas can be filled between the two groups of soft rings to increase the pressure between the two groups of soft rings and reduce the pressure difference between the external closed gas, thereby improving the sealing effect. In addition, when the soft ring leaks, the movement of the lower piston can trigger the touch switch to send out an automatic alarm, so as to timely discover and reduce the harm of leakage.

[0017] 2. During the process of the valve plate moving down to seal the valve port, the gas inside the airtight groove is compressed by the piston ring and ejected through the air nozzle. At the same time, the magnetic force between the magnetic ring and the magnetic blocks 2 and 1 is coordinated, so that in the first half of the sealing process, the air nozzle first blows upward to clean the bottom of the valve plate, and in the second half of the sealing process, it turns downward to blow and clean the gradually approaching partition. This realizes automatic position adjustment before each sealing to efficiently blow away impurities such as dust particles attached to the surface of the valve plate and the partition, reduce the deposition of impurity particles, ensure the fitting effect of the valve plate and the partition, and improve the sealing between the valve plate and the partition.

[0018] 3. In the process of the valve plate moving down and sealing, firstly, the spring 1 is charged by the blocking of the valve block. When the temperature of the blocked gas rises, the gas expansion force generated by the heat of multiple sets of spiral air pipes jointly pushes the valve block to connect the liquid path groove 1 and the liquid path groove 2. Then, the cooling medium finally flows from the liquid storage chamber, the liquid path groove 2 and the liquid path groove 1 to the inside of the airtight cylinder, thereby taking away part of the heat of the valve plate and cooling the area close to the valve plate and the valve port, realizing automatic cooling when the temperature rises, reducing the deformation between the valve plate and the partition, ensuring the fit, and reducing the deterioration of the seal caused by the deformation and expansion of the device caused by the temperature rise of the sealing gas, thereby ensuring the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is an overall schematic diagram of a valve body provided in an embodiment of the present invention.

[0021] Figure 2 It is a schematic diagram of the interior of a valve body provided in an embodiment of the present invention.

[0022] Figure 3 It is an overall schematic diagram of the lift valve structure provided in an embodiment of the present invention.

[0023] Figure 4 It is a schematic diagram of the interior of the airtight cylinder provided in an embodiment of the present invention.

[0024] Figure 5 It is a schematic diagram of the interior of a piston ring provided in an embodiment of the present invention.

[0025] Figure 6 Schematic diagram of the overall structure of the air nozzle provided by the embodiment of the present invention.

[0026] Figure 7 Schematic diagram of the interior of the valve plate provided in an embodiment of the present invention.

[0027] Figure 8 It is a sealing schematic diagram of a lift valve mechanism provided in an embodiment of the present invention.

[0028] Fig. 9 It is a schematic diagram of the interior of the airtight cylinder when sealed provided by an embodiment of the present invention.

[0029] Fig.10 Embodiment of the present invention Figure 8 An enlarged schematic diagram of point A.

[0030] Legend:

[0031] 100, valve body; 101, connecting port 1; 102, connecting port 2; 103, partition; 104, valve port; 105, airtight groove; 106, piston ring; 107, magnetic block 1; 108, air pipeline; 109, jet nozzle; 110, magnetic ring; 111, soft ring; 112, magnetic block 2; 200, cylinder; 201, valve plate; 202, connecting rod; 203, airtight cylinder; 204, liquid storage chamber; 205, piston block; 206, Upper piston; 207, spring one; 208, lower piston; 209, spring two; 210, touch switch; 211, airtight chamber; 212, connecting groove; 213, plunger block; 214, exhaust port; 215, gas injection port; 216, spiral air pipe; 217, liquid path groove one; 218, liquid path groove two; 219, sealing groove; 220, valve block; 300, air inlet pipe; 301, liquid pipe one; 303, liquid pipe three; 304, liquid pipe four. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0033] Reference Figure 1-10 The present invention provides a pneumatic lifting valve interlocking sealing structure, including a valve body 100, wherein two groups of lifting valve mechanisms are arranged inside the valve body 100, and a partition 103 is arranged inside the valve body 100. The partition 103 is T-shaped and divides the inside of the valve body 100 into three groups of cavities, wherein the two groups of cavities at the bottom are respectively connected with the two groups of connecting ports 101, and the group of cavities at the top is connected with the two groups of connecting ports 2 102. The surface of the valve body 100 is provided with connecting ports 2 102 and connecting ports 1 101 corresponding to the lifting valves, and the lifting valve mechanism includes a cylinder 200 arranged at the top of the valve body 100, the telescopic shaft of the cylinder 200 is connected with a connecting rod 202, the bottom of the connecting rod 202 is connected with a valve plate 201, the partition 103 is provided with a valve port 104 corresponding to the valve plate 201, and a soft sealing mechanism is arranged between the valve plate 201 and the partition 103;

[0034] The soft sealing mechanism includes an airtight groove 105 provided in the partition 103, a piston ring 106 is sleeved inside the airtight groove 105, a soft ring 111 is provided on the top of the piston ring 106 and the top of the partition 103, an air injection port 215 is provided inside the valve plate 201, and the bottom of the air injection port 215 is provided between the two groups of soft rings 111, an airtight cylinder 203 is provided inside the valve body 100, a piston block 205 is fixedly installed on the side wall of the connecting rod 202, an upper piston 206 is provided on the top of the piston block 205, a lower piston 208 is provided on the bottom of the piston block 205, a spring 207 is connected between the piston block 205 and the upper piston 206, and a spring 207 is connected between the piston block 205 and the lower piston 208. A spring 209 is connected, and the piston block 205, the upper piston 206, and the lower piston 208 are all movably connected to the inner wall of the airtight cylinder 203. The upper piston 206 and the lower piston 208 are slidably connected to the outer wall of the connecting rod 202. An airtight cavity 211 is provided on the outer wall of the airtight cylinder 203, and a plunger block 213 is provided inside the airtight cavity 211. A connecting groove 212 is provided between the airtight cylinder 203 and the airtight cavity 211, and an exhaust port 214 is provided on the side wall of the airtight cavity 211. The exhaust port 214 and the air injection port 215 are connected with an air inlet pipe 300. A touch switch 210 is provided on the inner bottom of the airtight cylinder 203, and a blowing mechanism and an anti-deformation mechanism are also provided inside the valve body 100.

[0035] Furthermore, an air hole is opened at the inner top of the airtight cavity 211. It should be noted that, through the design of the air hole, there is a certain delay when the plunger block 213 moves up to compress and remove the gas inside the airtight cavity 211, thereby preventing the gas from leaking out of the gas injection port 215 in advance.

[0036] Reference Figure 3-6The blowing mechanism includes an air path 108 opened inside the piston ring 106, the top of the air path 108 is rotatably connected to an air nozzle 109 through a rotating shaft, the outer wall of the air nozzle 109 is provided with a magnetic ring 110, the top of the partition 103 is provided with a magnetic block 107 designed corresponding to the magnetic pole of the magnetic ring 110, and the interior of the piston ring 106 is located above the air nozzle 109 and a magnetic block 112 designed corresponding to the magnetic pole of the magnetic ring 110 is provided.

[0037] Furthermore, the end of the air nozzle 109 close to the air path pipe 108 is designed to be horizontal, and the other end of the air nozzle 109 is designed to be inclined. Specifically, this design can control the blowing direction of the air nozzle 109, so that the air nozzle 109 can blow toward the valve plate 201 when it is close to the valve plate 201, and can turn to blow toward the partition 103 when it is close to the partition 103, always facing the target direction, thereby improving the concentration and blowing effect of the air.

[0038] Reference Figure 3-10 The anti-deformation mechanism includes a liquid path groove 1 217 and a liquid path groove 218 provided inside the valve plate 201, a liquid storage chamber 204 is provided on the top of the valve body 100, a liquid pipe 1 301 is connected above the liquid path groove 1 217 and the inner cavity of the airtight tube 203, a liquid pipe 4 304 is connected between the liquid path groove 218 and the liquid storage chamber 204, and a liquid pipe 3 303 is connected above the liquid storage chamber 204 and the inner cavity of the airtight tube 203, a sealing groove 219 is provided inside the valve plate 201, the sealing groove 219 is connected with the liquid path groove 1 217 and the liquid path groove 218, a valve block 220 is slidably connected inside the sealing groove 219, a horizontal groove connecting the liquid path groove 1 217 and the liquid path groove 218 is provided inside the valve block 220, it should be noted that when the valve plate 201 is close to the partition plate 103, it is magnetically affected by the magnetic block 107. The valve block 220 moves downward, causing the horizontal groove to be misaligned with the connecting channel between the liquid path groove 1 217 and the liquid path groove 2 218, and the liquid path groove 1 217 and the liquid path groove 2 218 are not connected. Moreover, during the downward movement of the valve plate 201, although the valve block 220 is not affected by the magnetic force of the magnetic block 107 in the early stage, the valve plate 201 moves downward at a fast speed, and the liquid path groove 1 217 and the liquid path groove 2 218 have a small flow cross-sectional area through the horizontal groove of the valve block 220, and the connecting flow rate is slow. Therefore, the impact is small. Only under the influence of thermal force, the valve block 220 will slowly exchange heat and dissipate heat after it moves upward and is connected. A spiral air pipe 216 is arranged inside the valve plate 201, and the spiral air pipe 216 is arranged with multiple circles around the axis of the valve plate 201. Each group of spiral air pipes 216 is connected, and the spiral air pipe 216 is provided with a group of channels connected to the bottom of the sealing groove 219.

[0039] Furthermore, the liquid path groove 1 217 and the liquid path groove 218 are disposed close to the contact position between the valve plate 201 and the valve port 104. Specifically, this can preferentially cool the sealing contact portion, thereby ensuring a cooling and sealing effect.

[0040] It should be noted that one-way valves are provided inside the liquid pipe 1 301 and the liquid pipe 3 303 .

[0041] The working process of the pneumatic lifting valve interlocking sealing structure is as follows:

[0042] When the two groups of lifting valve mechanisms are connected, the cylinders 200 of the two groups of lifting valve mechanisms are simultaneously started to drive the connecting rod 202 to lift the valve plate 201, so that it is free from the blockage of the valve port 104, so that the connecting port 101 is connected with the connecting port 2 102 through the valve port 104, and further through the T-shaped design of the partition 103, the air flow passes through the top of the partition 103 and is connected with the valve port 104 of another group of lifting valve mechanisms and its corresponding connecting port 101, so that the two groups of connecting ports 101 are connected through the two groups of lifting valve mechanisms. The interlocking design of the two groups of lifting valve mechanisms can avoid the leakage risk of a single lifting valve mechanism and improve the sealing stability. At the same time, one of the two groups of lifting valves can be opened and the other closed, and the gas can be discharged through the remaining valves arranged above the valve body 100, so as to perform operations such as exhausting and cleaning the pipeline, thereby improving the overall practicality of the valve body 100.

[0043] When the cylinder 200 drives the valve plate 201 to move downward through the connecting rod 202 to seal the valve port 104, the valve plate 201 first contacts the piston ring 106 when it moves downward, and further drives the piston ring 106 to move downward. When the piston ring 106 moves downward, it compresses the gas inside the airtight groove 105, so that it passes through the one-way valve inside the gas pipeline 108 and enters the inside of the air nozzle 109. When the magnetic ring 110 is not affected or is less affected by external force, the magnetic ring 110 on the side wall of the air nozzle 109 can cooperate with the magnetic block 112 to make the air nozzle 109 9 keeps the end facing upward, and the gas is ejected upward through the air nozzle 109 to blow and clean the bottom of the valve plate 201 that is about to contact the partition 103. The valve plate 201 pushes the piston ring 106 to continue to move downward. When the piston ring 106 moves down to approach the magnetic block 107, since the magnetic force of the magnetic block 107 is greater than the magnetic force of the magnetic block 2 112, the magnetic ring 110 can be pushed to overcome the magnetic force of the magnetic block 2 112 and flipped to make the end of the air nozzle 109 face downward. At this time, the air nozzle 1 09, the blowing direction at the end is changed to downward, and the part of the partition 103 that is about to contact the valve plate 201 is blown and cleaned. When the valve plate 201 moves down to seal the valve port 104, the gas inside the airtight groove 105 is compressed by the piston ring 106 and ejected through the air nozzle 109. At the same time, through the magnetic force between the magnetic ring 110, the magnetic block 2 112 and the magnetic block 1 107, the air nozzle 109 blows upward to clean the bottom of the valve plate 201, and then turns downward to blow and clean the partition 103, realizing self-sealing before each sealing. Dynamic air blowing removes impurities such as dust particles on the surface of the valve plate 201 and the partition 103, reduces the deposition of impurity particles, ensures the fitting effect of the valve plate 201 and the partition 103, and improves the sealing between the valve plate 201 and the partition 103. After the valve plate 201 rises, the piston ring 106 is reset under the action of the spring force set inside the airtight groove 105. At the same time, a group of pipes with a one-way valve extending to the outside of the valve body 100 are used to draw clean gas from the outside into the airtight groove 105 to realize the subsequent circulation operation of the device.

[0044] It should be noted that the piston ring 106 is designed as a frame as a whole, and the side wall of the piston ring 106 is designed with a connecting port to ensure the circulation of gas.

[0045] During the process of the valve plate 201 moving down to contact and fit with the partition 103, the connecting rod 202 moves down, driving the piston block 205 to move down, further driving the lower piston 208 to move down to compress the gas at the bottom of the airtight cylinder 203, and at the same time, the spring 209 is compressed, further increasing the pressure at the bottom inside the airtight cylinder 203, and the air pressure is transmitted to the airtight chamber 211 through the connecting groove 212, pushing the plunger block 213 to move up. During the upward movement of the plunger block 213, the gas above the inner side of the airtight chamber 211 is slowly discharged through the air hole above the inner side of the airtight chamber 211, causing the plunger block 213 to move up slowly until the plunger block 213 moves up to expose the exhaust port 214, so that the pressurized gas inside the airtight cylinder 203 passes through the connecting groove 212, the one-way valve inside the exhaust port 214 and the air inlet pipe 300 and enters the gas injection port 215, refer to Fig. 9 and Fig.10 When the valve plate 201 and the partition 103 are fitted, two groups of annular soft seals are formed by the soft ring 111 arranged on the piston ring 106 and the partition 103, which improves the filling effect of the gap and reduces the poor sealing caused by the reduced deformation and fit of the valve plate 201 and the partition 103, thereby ensuring the sealing performance. At the same time, during the sealing process, when the valve plate 201 moves downward, pressurized gas can be filled between the two groups of soft rings 111 to increase the pressure between the two groups of soft rings 111, reduce the pressure difference between the two groups of soft rings 111 and the external closed gas, thereby improving the sealing effect. Moreover, when the soft ring 111 leaks, the leaked gas is first It is clean gas with higher pressure that enters through the gas injection port 215, which effectively reduces the hazard of leakage. In addition, when leakage occurs and the gas inside the gas injection port 215 is slowly discharged, the gas on the lower side of the airtight cylinder 203 is reduced, and the pressure is reduced, so that the pressure on the lower piston 208 becomes smaller. Under the elastic force of the spring 209, the lower piston 208 moves downward and contacts the touch switch 210, thereby triggering the touch switch 210 to send a leakage alarm signal to the staff through an external alarm device, which can realize automatic alarm for leakage, effectively and timely detect leakage, and reduce the hazard of leakage.

[0046] It should be noted that when the piston block 205 is reset, the airtight cylinder 203 can slowly absorb external gas into the airtight cylinder 203 through the one-way valve arranged on the side wall of the airtight cylinder 203, and at the same time drive the plunger block 213 to gradually reset, so as to facilitate the circulation operation of the device.

[0047] During the downward movement of the valve plate 201, the downward movement of the piston block 205 will drive the upper piston 206 to move downward. However, due to the magnetic attraction of the magnetic block 107 to the valve block 220, the valve block 220 moves downward to block the channel between the liquid path groove 1 217 and the liquid path groove 218. The upper piston 206 is difficult to move downward to suck the liquid in the liquid path groove 1 217 into the airtight cylinder 203. Since the displacement of the upper piston 206 is limited, the piston block 205 moves downward to drive the spring 1 207 to stretch and store force. When the valve plate 201 fits with the partition 103, the valve port 1 After 04 is closed, if the hot exhaust gas is sealed, the temperature of the sealing part between the valve plate 201 and the valve port 104 rises, and the valve plate 201 is heated as a whole. Furthermore, when the gas temperature is too high, the gas inside the multiple groups of spiral gas pipes 216 arranged inside the valve plate 201 expands due to the heat, and converges into a unified gas driving force toward the inside of the sealing groove 219, pushing the valve block 220 to move upward, and the liquid path groove 1 217 and the liquid path groove 2 218 are connected through the channel inside the valve block 220. At this time, the upper piston 206 is driven downward by the elastic force of the spring 1 207. The cooling medium in the liquid path groove 1 217 is sucked into the airtight cylinder 203 through the liquid pipe 1 301 provided with a one-way valve. At the same time, the medium in the liquid path groove 218 flows into the liquid path groove 1 217 through the valve block 220, and the cooling medium in the liquid storage chamber 204 is replenished into the liquid path groove 218 through the liquid pipe 4 304, so that the cooling medium flows from the liquid storage chamber 204 to the liquid path groove 218, further flows through the liquid path groove 1 217, and finally enters the airtight cylinder 203. When the cooling medium flows, it can take away a part of the inside of the valve plate 201 The heat is used to cool the area close to the valve plate 201 and the valve port 104, so as to maintain the physical properties of the valve plate 201, reduce the deformation and expansion caused by the temperature rise, ensure the fit and sealing effect between the valve plate 201 and the partition 103, and reduce the influence of the temperature rise on the sealing after the valve plate 201 is sealed. When the valve plate 201 rises and resets, the piston block 205 drives the upper piston 206 to move up and pumps the cooling medium inside the airtight cylinder 203 into the liquid storage chamber 204 through the liquid pipe 303 provided with a one-way valve to form a liquid reflux.

[0048] It should be noted that the cooling medium filled and flowing inside the liquid storage cavity 204, the liquid path groove 1 217 and the liquid path groove 218 is preferably a cooling oil medium with good corrosion resistance, cooling effect and fluidity.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pneumatic poppet valve interlocking sealing structure, comprising a valve body (100), characterized in that: Two groups of lifting valve mechanisms are arranged inside the valve body (100), a partition (103) is arranged inside the valve body (100), a second connecting port (102) and a first connecting port (101) corresponding to the lifting valve are provided on the surface of the valve body (100), the lifting valve mechanism comprises a cylinder (200) arranged on the top of the valve body (100), a telescopic shaft of the cylinder (200) is connected to a connecting rod (202), a bottom of the connecting rod (202) is connected to a valve plate (201), the partition (103) is provided with a valve port (104) corresponding to the valve plate (201), and a soft sealing mechanism is provided between the valve plate (201) and the partition (103); The soft sealing mechanism comprises an airtight groove (105) provided in the partition (103), a piston ring (106) being sleeved inside the airtight groove (105), a soft ring (111) being provided on the top of the piston ring (106) and the top of the partition (103), an air injection port (215) being provided inside the valve plate (201), the bottom of the air injection port (215) being provided between the two groups of soft rings (111), an airtight cylinder (203) being provided inside the valve body (100), a piston block (205) being fixedly mounted on the side wall of the connecting rod (202), an upper piston (206) being provided on the top of the piston block (205), a lower piston (208) being provided on the bottom of the piston block (205), a spring 1 (207) being connected between the piston block (205) and the upper piston (206), and a spring 2 (207) being provided between the piston block (205) and the lower piston (208) A spring 2 (209) is connected between the piston block (205), the upper piston (206) and the lower piston (208) are all movably connected to the inner wall of the airtight cylinder (203), the upper piston (206) and the lower piston (208) are slidably connected to the outer wall of the connecting rod (202), the outer wall of the airtight cylinder (203) is provided with an airtight cavity (211), the interior of the airtight cavity (211) is provided with a plunger block (213), a connecting groove (212) is provided between the airtight cylinder (203) and the airtight cavity (211), the side wall of the airtight cavity (211) is provided with an exhaust port (214), an air inlet pipe (300) is connected between the exhaust port (214) and the air injection port (215), a touch switch (210) is provided at the inner bottom of the airtight cylinder (203), and an air blowing mechanism and an anti-deformation mechanism are also provided inside the valve body (100).

2. A pneumatic lift valve interlocking sealing structure according to claim 1, characterized in that: An air hole is provided on the inner top of the airtight cavity (211).

3. The pneumatic lift valve interlocking sealing structure according to claim 1, characterized in that: The blowing mechanism comprises an air path duct (108) opened inside the piston ring (106); the top of the air path duct (108) is rotatably connected to an air nozzle (109) via a rotating shaft; the outer wall of the air nozzle (109) is provided with a magnetic ring (110); the top of the partition (103) is provided with a magnetic block 1 (107) designed to correspond to the magnetic pole of the magnetic ring (110); and the inside of the piston ring (106) is located above the air nozzle (109) and is provided with a magnetic block 2 (112) designed to correspond to the magnetic pole of the magnetic ring (110).

4. A pneumatic lift valve interlocking sealing structure according to claim 3, characterized in that: The end of the air nozzle (109) close to the air pipeline (108) is designed to be horizontal, and the other end of the air nozzle (109) is designed to be inclined.

5. The pneumatic lifting valve interlocking sealing structure according to claim 1 is characterized in that: The anti-deformation mechanism comprises a liquid path groove 1 (217) and a liquid path groove 2 (218) provided inside the valve plate (201); a liquid storage cavity (204) is provided on the top of the valve body (100); a liquid pipe 1 (301) is connected above the liquid path groove 1 (217) and the inner cavity of the airtight cylinder (203); a liquid pipe 4 (304) is connected between the liquid path groove 2 (218) and the liquid storage cavity (204); a liquid pipe 3 (303) is connected above the liquid storage cavity (204) and the inner cavity of the airtight cylinder (203); a sealing groove (219) is provided inside the valve plate (201); (219) is connected to the liquid path groove 1 (217) and the liquid path groove 2 (218); the interior of the sealing groove (219) is slidably connected to a valve block (220); the interior of the valve block (220) is provided with a horizontal groove connecting the liquid path groove 1 (217) and the liquid path groove 2 (218); the interior of the valve plate (201) is provided with a spiral air pipe (216); the spiral air pipe (216) is arranged around the axis of the valve plate (201) for a plurality of turns; each group of the spiral air pipes (216) is connected; and the spiral air pipe (216) is provided with a group of channels connected to the bottom of the sealing groove (219).

6. A pneumatic lifting valve interlocking sealing structure according to claim 5, characterized in that: The first liquid path groove (217) and the second liquid path groove (218) are disposed close to the position where the valve plate (201) and the valve port (104) are in contact.

7. A pneumatic lift valve interlocking sealing structure according to claim 6, characterized in that: One-way valves are provided inside the liquid pipe 1 (301) and the liquid pipe 3 (303).

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