Piston-free air inlet valve

Abstract

The invention discloses a piston-free air inlet valve, and relates to the technical field of air inlet valves. The valve comprises a valve body, wherein the valve body is provided with an air inlet and an air outlet; the sealing mechanism comprises an annular plate installed in the valve body, the inner circumferential side of the annular plate is conical, the inner edge, close to the air inlet, of the annular plate is far away from the axis of the valve body, at least three plugging blocks are installed in the valve body in an inclined and sliding mode, and each plugging block comprises two attaching faces and one abutting face. When the plugging blocks move in the direction away from the annular plate, the plugging blocks gradually get away from the axis of the valve body, and when the multiple plugging blocks move and make the abutting faces abut against the inner circumferential side of the annular plate. Due to the design that the plugging block moves in an inclined mode and the abutting face is inclined, the abutting face can well abut against the sealing ring under the condition that the sealing ring is abraded, the sealing performance is effectively improved, the sealing performance is guaranteed, the service life of the sealing ring is prolonged, and the period of replacing the sealing ring is effectively shortened.

Description

Technical Field

[0001] The invention relates to the technical field of air intake valves, and in particular to a pistonless air intake valve. Background Art

[0002] In industrial automation and fluid control systems, electromagnetic intake valves are used as key actuators to adjust gas flow, pressure, and on-off control. Traditional electromagnetic intake valves usually use a single valve core structure to open and close the valve through the interaction of electromagnetic force and spring force. However, when the existing electromagnetic intake valve is in use, it mainly controls the opening and closing of the gas through the movement of the internal piston plate. When the piston plate moves at a high frequency for a long time, the sealing material of the piston plate is seriously worn. Especially under high pressure, the sealing interface is easily broken by the air pressure, causing gas leakage. The internal piston plate of the piston-type electromagnetic intake valve with a transmission wears faster under high pressure for a long time, which affects the service life. The piston plate sealing material needs to be replaced regularly.

[0003] Therefore, the present invention proposes a piston-free intake valve. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in the above-mentioned background technology, and provide a pistonless intake valve.

[0005] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0006] Pistonless intake valve, including:

[0007] A valve body, wherein the valve body has an air inlet and an air outlet;

[0008] The sealing mechanism comprises a ring plate installed in the valve body, the inner peripheral side of the ring plate is tapered, the inner edge of the ring plate close to the air inlet is away from the valve body axis, at least three blocking blocks are obliquely and slidably installed in the valve body, the blocking blocks include two fitting surfaces and one abutting surface, when the blocking blocks move in a direction away from the ring plate, the blocking blocks gradually move away from the valve body axis, when multiple blocking blocks move and make the abutting surfaces abut against the inner peripheral side of the ring plate, the fitting surfaces relative to each other between the blocking blocks abut against each other, so that multiple blocking blocks are formed to block the inside of the ring plate;

[0009] The electromagnetic component is installed on the valve body and acts on the blocking blocks. The electromagnetic component drives the multiple blocking blocks to move so that the relative fitting surfaces between the blocking blocks are parallel to each other and move closer or farther away.

[0010] Furthermore, a mounting plate is installed in the air inlet cavity, a plurality of ventilation grooves are formed on the mounting plate, the ring plate is located between the mounting plate and the air inlet, a resistance rod is installed at the middle of one end of the mounting plate close to the air inlet, the resistance rod passes through the ring plate, a holding surface is constructed at one end of the sealing block away from the resistance surface, a plurality of tightening surfaces are constructed in an array around the resistance rod, and the number of the tightening surfaces is consistent with the number of the holding surfaces.

[0011] Furthermore, a partition is provided inside the valve body, through which the valve body is separated into an air inlet cavity and an air outlet cavity, two flow tubes are connected to the valve body, one end of the two flow tubes is respectively connected to the air inlet cavity and the air outlet cavity, a connecting tube is connected between the free ends of the two flow tubes, the ring plate is located in the air outlet cavity, a pneumatic component is provided in the air inlet cavity, the pneumatic component acts on a plurality of blocking blocks, when air enters the air inlet cavity and the electromagnetic component is in a closed state, the pneumatic component is used to make the plurality of blocking blocks approach each other and block the inside of the ring plate.

[0012] Furthermore, the pneumatic component includes a push plate located in the air inlet cavity, and a plurality of connecting rods are constructed on the push plate. The free ends of the plurality of connecting rods all pass through the partition and are hinged with connecting rods. The free ends of the plurality of connecting rods are respectively hinged on a plurality of blocking blocks, and the electromagnetic component acts on the push plate.

[0013] Furthermore, the electromagnetic assembly includes a mounting cylinder installed on one side of the valve body, an electromagnetic valve is installed in the mounting cylinder, a sliding rod is slidably installed on the mounting cylinder, a hinged rod is hinged between one end of the sliding rod and the push plate, and the other end of the sliding rod is located in the mounting cylinder and is installed with an armature.

[0014] Furthermore, one end of the mounting plate is connected to a clamping spring, one end of the clamping spring is connected to a clamping plate, and the clamping plate is slidably mounted on the abutment rod. When multiple blocking blocks block the inside of the ring plate, the clamping plate abuts against one end of the multiple blocking blocks.

[0015] Furthermore, the clamping plate is circular, the diameter of the mounting plate is consistent with the diameter along the edge of the ring plate close to the air outlet, and a linkage piece acting on the clamping plate is installed on the blocking block. When the blocking block moves away from the ring plate, the mounting plate is moved away from the ring plate through the linkage piece.

[0016] Furthermore, the clamping plate is provided with a plurality of through grooves, the linkage comprises a forcing plate constructed on the blocking block, the forcing plate is provided with a driving inclined surface, and the end of the through groove away from the axis of the ring plate is provided with a forcing inclined surface for contacting the driving inclined surface.

[0017] Furthermore, one end of the push plate is configured with a sliding cylinder which penetrates and is inserted on the partition plate, the sliding cylinder is slidably sleeved on the resistance rod, and a resistance spring is installed between the resistance rod and the sliding cylinder.

[0018] Furthermore, it also includes a sealing rubber pad installed on the blocking block, and the sealing rubber pad is connected to two fitting surfaces and one pressing surface of the blocking block.

[0019] The beneficial effects of the present invention are as follows:

[0020] The design of the oblique movement of the sealing block and the inclined contact surface of the present invention enables the contact surface to well contact the sealing ring when the sealing ring is worn, thereby effectively improving the sealing performance. It not only ensures the sealing performance, but also increases the service life of the sealing ring, effectively reducing the cycle of replacing the sealing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 The present invention Figure 1 Partial stereoscopic cutaway view;

[0023] Figure 3 The present invention Figure 1 Partial stereoscopic cutaway view;

[0024] Figure 4 It is a structural diagram of the blocking block of the present invention;

[0025] Figure 5 The present invention Figure 2 A magnified view of the structure at center;

[0026] Figure 6 The present invention Figure 2 A magnified view of the structure at B in the middle;

[0027] Figure 7 The present invention Figure 3 Enlarged view of the structure at C in the middle

[0028] Reference numerals: 1, valve body; 2, partition plate; 3, intake cavity; 4, outlet cavity; 5, flow pipe; 6, connecting pipe; 7, sealing mechanism; 8, ring plate; 9, plugging block; 10, fitting surface; 11, contact surface; 12, ventilation groove; 13, intake port; 14, outlet port; 15, contact rod; 16, electromagnetic component; 1601, mounting cylinder; 1602, solenoid valve; 1603, sliding rod; 1604, armature; 1605, hinge rod; 17, pressing surface; 18, pressing tight surface; 19, pneumatic component; 1901, push plate; 1902, connecting rod; 1903, linkage rod; 20, pressing tight spring; 21, pressing tight plate; 22, linkage part; 23, through slot; 24, forcing plate; 25, driving inclined surface; 26, forcing inclined surface; 27, sliding cylinder; 28, contact spring; 29, sealing gasket; 30, mounting plate; 31, sealing ring. Detailed implementation manners

[0029] In order to make the objectives, 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 with reference to the accompanying drawings in the embodiments of the present invention.

[0030] As Figures 1-7 shown, a pistonless intake valve proposed in an embodiment of the present invention includes:

[0031] A valve body 1, on which there are an intake port 13 and an outlet port 14. High-pressure intake enters from the intake port 13 and sprays out from the outlet port 14 after passing through the valve body 1;

[0032] A sealing mechanism 7, including a ring plate 8 installed in the valve body 1. The inner peripheral side of the ring plate 8 is conical.

[0033] Specifically, a sealing groove is annularly formed on the inner peripheral side of the ring plate 8, and a sealing ring 31 is installed in the sealing groove. As Figure 6 shown, the sealing ring 31 is conical annular. The inner edge of the ring plate 8 close to the intake port 13 is away from the axis of the valve body 1. At least three plugging blocks 9 are slidably installed in the valve body 1 in an inclined manner. In this embodiment, the number of the plugging blocks 9 is six, and six guide rods are inclinedly installed in the valve body 1. The plugging blocks 9 are slidably sleeved on the guide rods. The plugging block 9 includes two fitting surfaces 10 and one contact surface 11. When the plugging block 9 moves away from the ring plate 8, the plugging block 9 gradually moves away from the axis of the valve body 1. When multiple plugging blocks 9 move and the contact surface 11 abuts against the inner peripheral side of the ring plate 8, the opposite fitting surfaces 10 between the plugging blocks 9 abut against each other to form multiple plugging blocks 9 to block the inside of the ring plate 8. That is to say, when multiple plugging blocks 9 move and the fitting surfaces 10 of the adjacent plugging blocks 9 abut against each other, at this time, the contact surface 11 abuts against the sealing ring 31 on the inner peripheral side of the ring plate 8;

[0034] The electromagnetic component 16 is installed on the valve body 1 and acts on the plugging block 9. By driving the movement of multiple plugging blocks 9 through the electromagnetic component 16, the opposite mating surfaces 10 between the plugging blocks 9 are moved closer to or away from each other in a parallel state, as Figure 4 shown. Specifically, the contact surface 11 of the plugging block 9 is an inclined surface, ensuring that the contact surface 11 of the plugging block 9 can fully contact the sealing ring 31. When multiple plugging blocks 9 approach the sealing ring 31 under the action of the electromagnetic component 16, at this time, because multiple plugging blocks 9 approach the sealing ring 31 synchronously, the opposite mating surfaces 10 between the plugging blocks 9 will gradually approach until they fit together. During this process, the mating surfaces 10 between the two plugging blocks 9 approach each other in a parallel state until they come into contact. This movement method can not only ensure that multiple plugging blocks 9 can fit fully, but also prevent the opposite mating surfaces 10 between the plugging blocks 9 from generating misalignment friction, effectively improving the service life. Preferably, in this embodiment, a gasket can be installed on the mating surface 10 to further improve the sealing effect. Shallow grooves can be opened on the mating surface 10 for installing the gasket. When the contact surface 11 of the plugging block 9 contacts the sealing ring 31, the contact surface 11 will give a certain frictional force to the sealing ring 31. Although there will be a certain amount of wear when the plugging block 9 moves at a high frequency, the design of the inclined movement of the plugging block 9 and the inclined contact surface 11 enables the contact surface 11 to still contact the sealing ring 31 well even when the sealing ring 31 is worn, effectively improving the sealing performance, not only ensuring the sealing performance, but also improving the service life of the sealing ring 31 and effectively reducing the replacement cycle of the sealing ring 31.

[0035] As Figure 2 and Figure 4 shown, in order to further improve the sealing performance and prevent leakage in the middle after multiple plugging blocks 9 are fitted together, a mounting plate 30 is installed in the air inlet cavity 3. Multiple ventilation grooves 12 are opened on the mounting plate 30. The annular plate 8 is located between the mounting plate 30 and the air inlet 13. A contact rod 15 is installed in the middle of one end of the mounting plate 30 close to the air inlet 13. The contact rod 15 passes through the annular plate 8. A pressing surface 17 is formed at one end of the plugging block 9 away from the contact surface 11. Multiple abutting surfaces 18 are arranged in an array on the circumference of the contact rod 15. The number of the abutting surfaces 18 is the same as that of the pressing surfaces 17. In this way, when multiple plugging blocks 9 contact the sealing ring 31, the pressing surface 17 of the plugging block 9 also contacts the abutting surface 18 of the contact rod 15 at this time. The pressing surface 17 is a plane and is parallel to the corresponding abutting surface 18, preventing leakage caused by the mutual contact of multiple plugging blocks 9 along the edges. The design of the abutting surface 18 effectively increases the contact area between the plugging block 9 and the contact rod 15, further improving the sealing performance.

[0036] As Figure 1 、 Figure 2 and Figure 3As shown, the specific structure of the valve body 1 is further disclosed. A partition plate 2 is arranged inside the valve body 1. The valve body 1 is separated by the partition plate 2 to form an air inlet cavity 3 and an air outlet cavity 4. Two flow pipes 5 are connected to the valve body 1. One ends of the two flow pipes 5 are respectively connected to the air inlet cavity 3 and the air outlet cavity 4. A connecting pipe 6 is connected between the free ends of the two flow pipes 5. The ring plate 8 is located in the air outlet cavity 4. A pneumatic assembly 19 is arranged in the air inlet cavity 3. The pneumatic assembly 19 acts on a plurality of blocking blocks 9. When air enters the air inlet cavity 3 and the electromagnetic assembly 16 is in the closed state, the pneumatic assembly 19 causes the plurality of blocking blocks 9 to approach each other and block the inside of the ring plate 8. That is to say, when the high-pressure gas enters from the air inlet 13, it is first located in the air inlet cavity 3. At this time, when the high-pressure gas contacts the pneumatic assembly 19, the plurality of blocking blocks 9 will block the inside of the ring plate 8 to quickly block the ring plate 8. So that after the high-pressure gas enters the air outlet cavity 4, the high-pressure gas will not pass through the ring plate 8 and flow out from the air outlet 14. Only by starting the electromagnetic assembly 16 can the plurality of blocking blocks 9 move away from each other to discharge the high-pressure gas.

[0037] As Figure 2 and Figure 3 shown, the specific structure of the pneumatic assembly 19 is disclosed. The pneumatic assembly 19 includes a push plate 1901 located in the air inlet cavity 3. A plurality of connecting rods 1902 are constructed on the push plate 1901. The free ends of the plurality of connecting rods 1902 all penetrate through the partition plate 2 and are hinged with a linkage rod 1903. The free ends of the plurality of linkage rods 1903 are respectively hinged on a plurality of blocking blocks 9. The electromagnetic assembly 16 acts on the push plate 1901. When the electromagnetic assembly 16 is in the closed state, after the high-pressure gas enters the air inlet cavity 3, the high-pressure gas will push the push plate 1901 to move. As a result, the movement of the push plate 1901 will drive the plurality of connecting rods 1902 to move. Because there is a linkage rod 1903 hinged between the connecting rod 1902 and the blocking block 9, the movement of the plurality of connecting rods 1902 will cause the plurality of blocking blocks 9 to approach each other until they abut against the inside of the ring plate 8, realizing the function of quickly blocking the ring plate 8. And since the high-pressure gas cannot pass through the ring plate 8 and be discharged from the air outlet 14, it will continuously exert pressure on the push plate 1901, thereby increasing the contact force between the blocking blocks 9 and between the blocking blocks 9 and the ring plate 8.

[0038] As Figure 1 and Figure 2As shown, the specific content of the electromagnetic component 16 is disclosed. The electromagnetic component 16 includes a mounting cylinder 1601 installed on one side of the valve body 1. An electromagnetic valve 1602 is installed inside the mounting cylinder 1601. A sliding rod 1603 is slidably installed on the mounting cylinder 1601. One end of the sliding rod 1603 is hinged to a push plate 1901 by a hinge rod 1605. The other end of the sliding rod 1603 is located inside the mounting cylinder 1601 and is provided with an armature 1604. The mounting cylinder 1601 is arranged on one side of the valve body 1, so that during the flow of high-pressure gas, it will not be blocked by the electromagnetic valve 1602, ensuring the air flow. When the electromagnetic valve 1602 is started, the electromagnetic valve 1602 is energized to make the armature 1604 adsorbed on the electromagnetic valve 1602, thereby driving the movement of the sliding rod 1603. When the sliding rod 1603 moves, it will drive the push plate 1901 to move away from the ring plate 8 through the hinge rod 1605, and further make the plurality of plugging blocks 9 move away from each other. When the electromagnetic valve 1602 is closed, under the action of high-pressure gas, the push plate 1901 moves towards the ring plate 8, so that the plurality of plugging blocks 9 re-contact inside the ring plate 8.

[0039] As Figure 2 and Figure 6 As shown, in order to further improve the sealing performance, one end of the mounting plate 30 is connected with a pressing spring 20. One end of the pressing spring 20 is connected with a pressing plate 21. The pressing plate 21 is slidably sleeved on the abutting rod 15. When the plurality of plugging blocks 9 plug the inside of the ring plate 8, the pressing plate 21 abuts against one end of the plurality of plugging blocks 9. Because the pressing plate 21 is sleeved on the abutting rod 15, after the plurality of plugging blocks 9 plug the inside of the ring plate 8, at this time, the movement of the plugging blocks 9 will drive the pressing plate 21 to move upward, thereby squeezing the pressing spring 20. Under the reaction of the pressing spring 20, the plugging blocks 9 are made to abut against the plurality of plugging blocks 9, so that the pressing surface 17 of the plugging blocks 9 and the abutting surface 18 of the abutting rod 15 are abutted and pressed by the pressing plate 21, effectively preventing gas leakage between the abutting surface 18 and the pressing surface 17.

[0040] As Figure 2 and Figure 6As shown, in order to further improve the sealing effect of the pressing plate 21, the pressing plate 21 is circular, and the diameter of the mounting plate 30 is the same as the diameter of the edge of the ring plate 8 close to the air outlet 14. In this way, when multiple blocking blocks 9 abut against the inside of the ring plate 8, at this time, the pressing plate 21 not only blocks the gap between the pressing surface 17 and the abutting surface 18, but also blocks between the two fitting surfaces 10, preventing high-pressure gas from flowing out through the gap between the two fitting surfaces 10, further improving the sealing performance. And after the fitting surfaces 10 are slightly aged, the pressing plate 21 can ensure the continuous use of the device, effectively improving the service life. A linkage 22 acting on the pressing plate 21 is installed on the blocking block 9. When the blocking block 9 moves away from the ring plate 8, the mounting plate 30 is moved away from the ring plate 8 through the linkage 22. Because the diameter of the pressing plate 21 is increased, in order to prevent the pressing plate 21 from affecting the air flow effect, when multiple blocking blocks 9 move away from the ring plate 8, the pressing plate 21 will be moved away from the ring plate 8 through the linkage 22, so that high-pressure gas can be discharged from the air outlet 14 through the gap between the ring plate 8 and the pressing plate 21.

[0041] As Figure 2 and Figure 6 shown, in some embodiments, a plurality of through slots 23 are formed in the pressing plate 21. The linkage 22 includes a forcing plate 24 formed on the blocking block 9. A driving inclined surface 25 is formed on the forcing plate 24. One end of the through slot 23 away from the axis of the ring plate 8 is formed with a forcing inclined surface 26 for contacting the driving inclined surface 25. As shown, the inclination angle of the driving inclined surface 25 is different from the moving angle of the blocking block 9, and the slope of the driving inclined surface 25 is greater than the inclination angle of the moving axis of the blocking block 9. In this way, when the blocking block 9 moves obliquely downward, the driving inclined surface 25 will contact the forcing inclined surface 26, thereby forcing the pressing plate 21 to move upward. As the blocking block 9 continues to move downward, the top of the forcing plate 24 abuts against the bottom of the pressing plate 21. At this time, the blocking block 9 just moves to the maximum limit position, effectively ensuring the air flow, and no additional driving force is required to drive the movement of the pressing plate 21.

[0042] As Figure 2 shown, in some embodiments, one end of the push plate 1901 is formed with a sliding cylinder 27 inserted through the partition plate 2. The sliding cylinder 27 is slidably sleeved on the abutting rod 15. Abutting spring 28 is installed between the abutting rod 15 and the sliding cylinder 27. The design of the abutting spring 28 enables the solenoid valve 1602 to be in the closed state. At this time, the abutting spring 28 will reset due to its own elastic deformation characteristics, thereby enabling the push plate 1901 to quickly move back to its original position. When the solenoid valve 1602 is in the closed state, multiple blocking blocks 9 can quickly move to block the inside of the ring plate 8.

[0043] AsFigure 2 and Figure 4 As shown in and

[0044] , in some embodiments, it further includes a sealing gasket 29 installed on the plugging block 9, and the sealing gasket 29 is connected to two fitting surfaces 10 and one pressing surface 17 of the plugging block 9.

[0044] The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. Pistonless intake valve, characterized in that: include: A valve body, wherein the valve body has an air inlet and an air outlet; The sealing mechanism comprises a ring plate installed in the valve body, the inner peripheral side of the ring plate is tapered, the inner edge of the ring plate close to the air inlet is away from the valve body axis, at least three blocking blocks are obliquely and slidably installed in the valve body, the blocking blocks include two fitting surfaces and one abutting surface, when the blocking blocks move in a direction away from the ring plate, the blocking blocks gradually move away from the valve body axis, when multiple blocking blocks move and make the abutting surfaces abut against the inner peripheral side of the ring plate, the fitting surfaces relative to each other between the blocking blocks abut against each other, so that multiple blocking blocks are formed to block the inside of the ring plate; The electromagnetic component is installed on the valve body and acts on the blocking blocks. The electromagnetic component drives the multiple blocking blocks to move so that the relative fitting surfaces between the blocking blocks are parallel to each other and move closer or farther away.

2. The pistonless intake valve according to claim 1, characterized in that: A mounting plate is installed in the air inlet cavity, and a plurality of ventilation grooves are formed on the mounting plate. The ring plate is located between the mounting plate and the air inlet. A resistance rod is installed at the middle of one end of the mounting plate close to the air inlet, and the resistance rod passes through the ring plate. A holding surface is configured at one end of the blocking block away from the resistance surface, and a plurality of tight surfaces are configured in an array around the resistance rod, and the number of the tight surfaces is consistent with the number of the holding surfaces.

3. The pistonless intake valve according to claim 1, characterized in that: A partition is provided inside the valve body, and the valve body is separated by the partition to form an air inlet cavity and an air outlet cavity. Two flow pipes are connected to the valve body, and one end of the two flow pipes is respectively connected to the air inlet cavity and the air outlet cavity, and a connecting pipe is connected between the free ends of the two flow pipes. The ring plate is located in the air outlet cavity, and a pneumatic component is provided in the air inlet cavity. The pneumatic component acts on multiple blocking blocks. When air enters the air inlet cavity and the electromagnetic component is in a closed state, the pneumatic component is used to make the multiple blocking blocks approach each other and block the inside of the ring plate.

4. The pistonless intake valve according to claim 3, characterized in that: The pneumatic component includes a push plate located in the air inlet cavity, and a plurality of connecting rods are constructed on the push plate. The free ends of the plurality of connecting rods all pass through the partition and are hinged with connecting rods. The free ends of the plurality of connecting rods are respectively hinged on a plurality of blocking blocks, and the electromagnetic component acts on the push plate.

5. The pistonless intake valve according to claim 3, characterized in that: The electromagnetic assembly includes a mounting cylinder installed on one side of the valve body, a solenoid valve is installed in the mounting cylinder, a sliding rod is slidably installed on the mounting cylinder, a hinged rod is hinged between one end of the sliding rod and the push plate, and the other end of the sliding rod is located in the mounting cylinder and is installed with an armature.

6. The pistonless intake valve according to claim 2, characterized in that: One end of the mounting plate is connected to a clamping spring, one end of the clamping spring is connected to a clamping plate, the clamping plate is slidably sleeved on the abutment rod, and when multiple blocking blocks block the inside of the ring plate, the clamping plate abuts against one end of the multiple blocking blocks.

7. The pistonless intake valve according to claim 6, characterized in that: The clamping plate is circular, the diameter of the mounting plate is consistent with the diameter of the edge of the ring plate close to the air outlet, and a linkage piece acting on the clamping plate is installed on the blocking block. When the blocking block moves away from the ring plate, the mounting plate is moved away from the ring plate through the linkage piece.

8. The pistonless intake valve according to claim 7, characterized in that: The clamping plate is provided with a plurality of through grooves, the linkage member comprises a forcing plate constructed on the blocking block, the forcing plate is constructed with a driving inclined surface, and one end of the through groove away from the axis of the ring plate is constructed with a forcing inclined surface for contacting the driving inclined surface.

9. The pistonless intake valve according to claim 4, characterized in that: One end of the push plate is configured with a sliding cylinder which penetrates and is inserted on the partition plate. The sliding cylinder is slidably sleeved on the resistance rod. A resistance spring is installed between the resistance rod and the sliding cylinder.

10. The pistonless intake valve according to claim 1, characterized in that: It also includes a sealing rubber pad installed on the blocking block, and the sealing rubber pad is connected to two fitting surfaces and one pressing surface of the blocking block.

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