Valve suitable for short frequency

Abstract

The invention discloses a valve suitable for short frequency and high speed. The valve comprises a valve body, a valve element and a valve rod. An outlet, a valve cavity and an inlet which are communicated with one another are formed in the valve body, the valve element is arranged in the valve cavity and comprises a support and a plugging head used for opening and closing the inlet, a mounting cavity is formed in the support, a connecting rod is arranged on the support and located in the mounting cavity, and the plugging head is connected with the connecting rod. A sliding block is arranged at the position, facing the inner wall of the valve cavity and opposite to the connecting rod, of the support, an annular sliding rail allowing the sliding block to slide is arranged in the valve cavity, one end of the valve rod stretches into the valve cavity, the other end of the valve rod stretches out of the valve body, an inserting groove is formed in the valve rod, and the connecting rod is located in the inserting groove. The invention aims to provide a valve suitable for short frequency and high speed.

Description

Technical Field

[0001] The invention relates to the field of valves, and more particularly to a valve suitable for short-frequency and fast operation. Background Art

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and adjust and control the parameters (temperature, pressure, and flow) of the conveying medium. According to their functions, they can be divided into shut-off valves, check valves, regulating valves, etc.

[0003] Valves are control components in fluid delivery systems, with functions such as shutoff, regulation, flow diversion, backflow prevention, pressure stabilization, flow diversion or overflow pressure relief. Valves used in fluid control systems come in a wide variety of varieties and specifications, from the simplest shutoff valves to the various valves used in extremely complex automatic control systems.

[0004] In some special fields, such as process requirements, valves need to be opened and closed frequently and quickly in a short period of time. At this time, traditional valves cannot achieve this function. Summary of the invention

[0005] In view of the deficiencies in the prior art, the object of the present invention is to provide a valve suitable for short-frequency and fast operation.

[0006] To achieve the above object, the present invention provides the following technical solutions: A valve suitable for short-frequency and fast operation, comprising: a valve body, a valve core, and a valve stem; The valve body is provided with an outlet, a valve cavity and an inlet which are connected to each other, the valve core is arranged in the valve cavity, the valve core includes a bracket and a plugging head for opening and closing the inlet, an installation cavity is arranged in the bracket, a connecting rod is arranged on the bracket, the connecting rod is located in the installation cavity, a sliding block is arranged on the bracket facing the inner wall of the valve cavity and relative to the connecting rod, an annular sliding track for the sliding block to slide is arranged in the valve cavity, one end of the valve stem is deep into the valve cavity, and the other end extends out of the valve body, a slot is arranged on the valve stem, and the connecting rod is located in the slot.

[0007] As a further improvement of the present invention, The bracket comprises a first connecting ring and a second connecting ring, wherein the first connecting ring and the second connecting ring are respectively located at an inlet and an outlet, and the first connecting ring and the second connecting ring are connected via a connecting plate, and the connecting rod and the sliding block are arranged on the connecting plate.

[0008] As a further improvement of the present invention, The first connecting ring is provided with a mounting plate, a hollow groove is formed between the mounting plate and the first connecting ring, and the plugging head is provided on the mounting plate.

[0009] As a further improvement of the present invention, The valve body includes a cylinder, a first valve cover, and a second valve cover. The first valve cover and the second valve cover are respectively installed at two ends of the cylinder. The inlet is located at the first valve cover, and the outlet is located at the second valve cover. The valve cavity is located on the cylinder. The cylinder is also provided with a through hole for the valve stem to pass through.

[0010] As a further improvement of the present invention, The valve cover is provided with a mounting hole, a valve seat is installed in the mounting hole, a flow port communicating with the inlet is provided on the valve seat, and one end of the valve seat is used to cooperate with the plugging head; The valve seat is provided with a first step, a first recessed platform for cooperating with the first step is provided in the mounting hole, a positioning hole is provided on the first recessed platform, a first spring is provided in the positioning hole, and one end of the first spring abuts against the first step.

[0011] As a further improvement of the present invention, The mounting hole is provided with an annular groove, a snap ring is installed in the annular groove, and the first boss is limited between the snap ring and the first recess; A second boss is arranged on the first valve seat, a mounting gap is formed between the second boss and the inner wall of the mounting hole, and a first sealing ring is arranged in the mounting gap.

[0012] As a further improvement of the present invention, The mounting plate is provided with an insertion rod, the blocking head is provided with an insertion groove for inserting the insertion rod, the insertion rod is provided with a conducting hole, the conducting hole is connected with the insertion groove, a second spring is provided in the insertion groove, the conducting hole has an internal thread at one end facing away from the insertion groove, a first bolt is threadedly connected to the internal thread, two ends of the second spring abut against the first bolt and the inner wall of the insertion groove, a limiting slide groove is provided on the insertion rod, the blocking head is provided with a third threaded hole, a second bolt is threadedly connected to the third threaded hole, and one end of the second bolt enters the limiting slide groove.

[0013] As a further improvement of the present invention, The cylinder body is provided with an installation through groove, and a track plate is detachably installed on the installation through groove, the sliding track is arranged on the track plate, and a sliding groove is arranged on the track plate, and a sliding block is slidably connected to the sliding groove, and the sliding block is arranged on the sliding track, and a first transverse groove is arranged on the installation through groove, and a second transverse groove communicating with the sliding groove is arranged on the track plate, and a limiting strip for inserting into the first transverse groove is arranged on the second transverse groove, and a third spring for keeping the limiting strip entering the first transverse groove is arranged in the second transverse groove, and the third spring conflicts with the limiting strip and the inner wall of the second transverse groove, and a first inclined surface is arranged on the sliding block, and a limiting groove for cooperating with the first inclined surface is arranged on the limiting strip.

[0014] As a further improvement of the present invention, The limiting groove is provided with a second inclined surface for cooperating with the first inclined surface, and the end of the limiting strip for extending into the first transverse groove is provided with a third inclined surface.

[0015] As a further improvement of the present invention, The mounting groove is provided with a first threaded hole, the track plate is provided with a second threaded hole for cooperating with the first threaded hole, screws are threadedly connected to the first threaded hole and the second threaded hole, and a second sealing ring is provided at the connection between the track plate and the mounting groove.

[0016] The beneficial effect of the present invention is that one end of the valve stem goes deep into the valve cavity, and a slot is set on the valve stem, and the slot cooperates with the connecting rod, so that when the valve stem is rotated, the connecting rod will be driven to move, thereby promoting the movement of the entire bracket. Because a sliding block is set on the bracket, the sliding block cooperates with the sliding track, so that the bracket will produce a slight rotation when moving back and forth, and will not leave the sliding track to move. At this time, the plugging head can complete the opening and closing of the inlet. As the valve stem rotates continuously, the sliding track is annular. After the plugging head opens the inlet, it will continue to block the inlet. In this way, the opening and closing of the valve can be controlled quickly and frequently, and the sliding track can be set to various annular shapes such as circular, elliptical, triangular, quadrilateral, etc. according to the needs of the process, which can adapt to various process requirements. At the same time, the entire bracket and the plugging head will also undergo axial rotation. The rotation of the bracket can scrape the inner wall of the channel, and the rotation of the plugging head can also properly clean the inlet and reduce blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the matching structure when closed according to the first embodiment of the present invention; Figure 3 This is a schematic diagram of the explosion structure of the first embodiment of the present invention; Figure 4 This is a schematic diagram of the valve core matching structure when the valve core is opened according to the first embodiment of the present invention; Figure 5 This is a schematic diagram of the cylinder structure of the first embodiment of the present invention; Figure 6 This is a schematic diagram of the internal structure of Embodiment 2 of the present invention; Figure 7 for Figure 6 A local enlarged view of point A; Figure 8 This is a schematic diagram of the detachable structure of the third embodiment of the present invention; Fig. 9 This is a schematic diagram of the structure of the non-detachable embodiment of the present invention; Fig.10 Schematic diagram of the internal structure of the fourth embodiment of the present invention.

[0018] Reference numerals: 1. Valve body; 2. Bracket; 3. Valve stem; 4. Outlet; 5. Valve cavity; 6. Inlet; 7. Blocking head; 8. Mounting cavity; 9. Connecting rod; 10. Sliding block; 11. Sliding track; 12. Slot; 13. First connecting ring; 14. Second connecting ring; 15. Connecting plate; 16. Mounting plate; 17. Empty groove; 18. Cylinder; 19. First valve cover; 20. Second valve cover; 21. Through hole; 22. Mounting hole; 23. Valve seat; 24. Flow port; 25. First step; 26. First concave platform; 27. Positioning hole; 28. First spring; 29. ​​Annular groove; 30. Snap ring; 31. Second convex platform; 32 , installation gap; 33, first sealing ring; 34, insertion rod; 35, insertion groove; 36, guide hole; 37, second spring; 38, internal thread; 39, first bolt; 40, limiting slide groove; 41, third threaded hole; 42, second bolt; 43, installation through groove; 44, track plate; 45, sliding groove; 46, sliding block; 47, first transverse groove; 48, second transverse groove; 49, limiting strip; 50, third spring; 51, first inclined surface; 52, limiting groove; 53, second inclined surface; 54, third inclined surface; 55, first threaded hole; 56, second threaded hole; 57, screw; 58, second sealing ring. DETAILED DESCRIPTION

[0019] The present invention will be further described below in detail with reference to the embodiments shown in the accompanying drawings. Example

[0020] A valve suitable for short-frequency fast operation, comprising: a valve body 1, a valve core, and a valve stem 3; The valve body 1 is provided with an outlet 4, a valve cavity 5 and an inlet 6 which are connected to each other. The valve core is arranged in the valve cavity 5. The valve core includes a bracket 2 and a plugging head 7 for opening and closing the inlet 6. An installation cavity 8 is arranged in the bracket 2. A connecting rod 9 is arranged on the bracket 2. The connecting rod 9 is located in the installation cavity 8. A sliding block 10 is arranged on the bracket 2 facing the inner wall of the valve cavity 5 and relative to the connecting rod 9. An annular sliding track 11 for the sliding block 10 to slide is arranged in the valve cavity 5. One end of the valve stem 3 extends deep into the valve cavity 5, and the other end extends out of the valve body 1. A slot 12 is arranged on the valve stem 3, and the connecting rod 9 is located in the slot 12.

[0021] Through the above technical solution, one end of the valve stem 3 goes deep into the valve cavity 5, and a slot 12 is set on the valve stem 3, and the slot 12 cooperates with the connecting rod 9, so that when the valve stem 3 is rotated, the connecting rod 9 will be driven to move, thereby pushing the entire bracket 2 to move. Because the bracket 2 is provided with a sliding block 10, the sliding block 10 cooperates with the sliding track 11, so that the bracket 2 will produce a slight rotation when moving back and forth, and will not be separated from the sliding track 11 to move, at this time, the plugging head 7 can complete the opening and closing of the inlet 6. As the valve stem 3 rotates continuously, the sliding track 11 is annular, and the plugging head 7 will continue to block the inlet 6 after opening the inlet 6, so that the valve opening and closing can be controlled quickly and frequently, and the sliding track 11 can be set to various annular shapes such as circular, elliptical, triangular, quadrilateral, etc. according to the needs of the process, which can adapt to various process requirements. At the same time, the entire bracket 2 and the plugging head 7 will also undergo axial rotation, and the rotation of the bracket 2 can scrape the inner wall of the channel, and the rotation of the plugging head 7 can also properly clean the inlet 6 and reduce blockage.

[0022] As a specific implementation method of the improvement, The bracket 2 includes a first connecting ring 13 and a second connecting ring 14 , which are respectively located at the inlet 6 and the outlet 4 , and are connected by a connecting plate 15 , on which the connecting rod 9 and the sliding block 10 are arranged.

[0023] Through the above technical solution, the bracket 2 is composed of a first connecting ring 13 and a second connecting ring 14, and is connected by a connecting plate 15, so that the bracket 2 has a simple structure and light weight, and at the same time has more gaps for fluid to pass through, and does not affect the overall structural stability.

[0024] As a specific implementation method of the improvement, A mounting plate 16 is disposed on the first connecting ring 13 , a slot 17 is formed between the mounting plate 16 and the first connecting ring 13 , and the plugging head 7 is disposed on the mounting plate 16 .

[0025] Through the above technical solution and the arrangement of the mounting plate 16 , the plugging head 7 has enough space for installation.

[0026] As a specific implementation method of the improvement, The valve body 1 includes a cylinder 18, a first valve cover 19, and a second valve cover 20. The first valve cover 19 and the second valve cover 20 are respectively installed at both ends of the cylinder 18. The inlet 6 is located on the first valve cover 19, and the outlet 4 is located on the second valve cover 20. The valve cavity is located on the cylinder 18. The cylinder 18 is also provided with a through hole 21 for the valve stem 3 to pass through.

[0027] Through the above technical solution, the valve body 1 can be installed by the bracket 2 and the valve stem 3 into the cylinder 18, and then the first valve cover 19 and the second valve cover 20 are installed, which is easier to assemble. In the embodiment of our company, the first valve cover 19, the second valve cover 20 and the cylinder 18 are mainly fixed and connected by screw holes and bolts.

[0028] As a specific implementation method of the improvement, The first valve cover 19 is provided with a mounting hole 22, a valve seat 23 is installed in the mounting hole 22, a flow port 24 communicating with the inlet 6 is provided on the valve seat 23, and one end of the valve seat 23 is used to cooperate with the plugging head 7; The valve seat 23 is provided with a first step 25 , and a first recess 26 for cooperating with the first step 25 is provided in the mounting hole 22 . A positioning hole 27 is provided on the first recess 26 , and a first spring 28 is provided in the positioning hole 27 . One end of the first spring 28 abuts against the first step 25 .

[0029] Through the above technical solution, the installation position of the valve seat 23 is provided by the setting of the installation hole 22. Through the setting of the first spring 28, the first spring 28 continuously maintains a force to push the valve seat 23 into the valve cavity 5 to cooperate with the plugging head 7, so that the sealing effect of the plugging head 7 is better.

[0030] As a specific implementation method of the improvement, The mounting hole 22 is provided with an annular groove 29, a snap ring 30 is installed in the annular groove 29, and the first boss is limited between the snap ring 30 and the first recessed platform 26; A second boss 31 is disposed on the valve seat 23 . A mounting gap 32 is defined between the second boss 31 and the inner wall of the mounting hole 22 . A first sealing ring 33 is disposed in the mounting gap 32 .

[0031] Through the above technical solution, the valve seat 23 can be fixed by the provision of the annular groove 29 and the clamping ring 30 , and the provision of the first sealing ring 33 improves the sealing performance of the valve seat 23 . Example

[0032] The following improvements are made on the basis of the first embodiment: The mounting plate 16 is provided with an insert rod 34, the plugging head 7 is provided with an insertion groove 35 for inserting the insert rod 34, the insert rod 34 is provided with a conducting hole 36, the conducting hole 36 is in communication with the inserting groove 35, a second spring 37 is provided in the inserting groove 35, the conducting hole 36 has an internal thread 38 at one end facing away from the inserting groove 35, a first bolt 39 is threadedly connected to the internal thread 38, two ends of the second spring 37 abut against the first bolt 39 and the inner wall of the inserting groove 35, a limiting slide groove 40 is provided on the insert rod 34, the plugging head 7 is provided with a third threaded hole 41, a second bolt 42 is threadedly connected to the third threaded hole 41, and one end of the second bolt 42 enters into the limiting slide groove 40.

[0033] Through the above technical solution, after the valve is used for a long time, the matching between the plugging head 7 and the valve seat 23 will become less and less tight. There are many reasons for this. Through the arrangement of this embodiment, the first bolt 39 can be rotated to make the second spring 37 elastically deformed, thereby changing the force of the spring, thereby changing the force pushing the plugging head 7 toward the valve seat 23, and further adjusting the external force of the plugging head 7, thereby adjusting the force when the plugging head 7 and the valve seat 23 are closed. And through the arrangement of the second bolt 42, the second bolt 42 is restricted in the limiting slide groove 40 to prevent the plugging head 7 from being separated from the plug rod 34. Example

[0034] The following improvements are made on the basis of the first embodiment: The cylinder 18 is provided with a mounting groove 43, and a track plate 44 is detachably mounted on the mounting groove 43. The sliding track 11 is arranged on the track plate 44, and a sliding groove 45 is arranged on the track plate 44. A sliding block 46 is slidably connected to the sliding groove 45, and the sliding block 46 is arranged on the sliding track 11. The mounting groove 43 is provided with a first transverse groove 47, and the track plate 44 is provided with a second transverse groove 48 that is connected to the sliding groove 45. A limiting strip 49 for inserting into the first transverse groove 47 is provided on the second transverse groove 48, and a third spring 50 for keeping the limiting strip 49 entering the first transverse groove 47 is provided in the second transverse groove 48. The third spring 50 conflicts with the limiting strip 49 and the inner wall of the second transverse groove 48. The sliding block 46 is provided with a first inclined surface 51, and the limiting strip 49 is provided with a limiting groove 52 for cooperating with the first inclined surface 51.

[0035] Through the above technical solution, a method for conveniently replacing the sliding track 11 is provided. When the opening and closing strategy needs to be adjusted, the sliding track 11 can be directly replaced without replacing the valve. When the sliding track 11 needs to be replaced, the valve stem 3 is rotated so that the sliding block 10 abuts against the sliding block 46, so that the sliding block 46 moves downward. The sliding block 46 is provided with a first inclined surface 51, which, when cooperating with the limiting groove 52, drives the limiting strip 49 to move, so that the limiting strip 49 is separated from the first transverse groove 47, and the third spring 50 is compressed, and the entire track plate 44 can be disassembled at this time. In the embodiment, when the plugging head 7 completely closes the valve, the sliding block 10 abuts against the sliding block 46. In this way, replacement can be achieved when it is closed.

[0036] On the contrary, when installing the track plate 44, the track plate 44 is inserted into the installation groove 43. Since the limit strip 49 is pressed into the second transverse groove 48, it can be directly installed. When entering the position of the first transverse groove 47, the limit strip 49 will be inserted into the first transverse groove 47 under the action of the third spring 50 to complete the installation.

[0037] As a specific implementation method of the improvement, The limiting groove 52 is provided with a second inclined surface 53 for cooperating with the first inclined surface 51 , and one end of the limiting strip 49 for extending into the first transverse groove 47 is provided with a third inclined surface 54 .

[0038] Through the above technical solution, the first inclined surface 51 and the second inclined surface 53 cooperate to make the sliding block 46 more easily drive the limit bar 49 to move during the pressing process. Through the setting of the third inclined surface 54, the track plate 44 can move along the third inclined surface 54 when it is installed, so that the installation is more convenient.

[0039] As a specific implementation method of the improvement, The mounting groove is provided with a first threaded hole 55 , the track plate 44 is provided with a second threaded hole 56 for cooperating with the first threaded hole 55 , the first threaded hole 55 and the second threaded hole 56 are internally threadedly connected with screws 57 , and a second sealing ring 58 is provided at the connection between the track plate 44 and the mounting groove 43 .

[0040] According to the above technical solution, the screw 57 is screwed in through the cooperation of the first threaded hole 55 and the second threaded hole 56 to fix the track plate 44 . In addition, the second sealing ring 58 is provided to improve the sealing of the track plate 44 . Example

[0041] The following improvements are made on the basis of the second embodiment: it is equivalent to combining the second embodiment with the third embodiment.

[0042] The cylinder 18 is provided with a mounting groove 43, and a track plate 44 is detachably mounted on the mounting groove 43. The sliding track 11 is arranged on the track plate 44, and a sliding groove 45 is arranged on the track plate 44. A sliding block 46 is slidably connected to the sliding groove 45, and the sliding block 46 is arranged on the sliding track 11. The mounting groove 43 is provided with a first transverse groove 47, and the track plate 44 is provided with a second transverse groove 48 that is connected to the sliding groove 45. A limiting strip 49 for inserting into the first transverse groove 47 is provided on the second transverse groove 48, and a third spring 50 for keeping the limiting strip 49 entering the first transverse groove 47 is provided in the second transverse groove 48. The third spring 50 conflicts with the limiting strip 49 and the inner wall of the second transverse groove 48. The sliding block 46 is provided with a first inclined surface 51, and the limiting strip 49 is provided with a limiting groove 52 for cooperating with the first inclined surface 51.

[0043] Through the above technical solution, a method for conveniently replacing the sliding track 11 is provided. When the sliding track 11 needs to be replaced, the valve stem 3 is rotated so that the sliding block 10 abuts against the sliding block 46, causing the sliding block 46 to move downward. A first inclined surface 51 is provided on the sliding block 46, which, when cooperating with the limiting groove 52, drives the limiting bar 49 to move, causing the limiting bar 49 to disengage from the first transverse groove 47, and the third spring 50 will be compressed. At this time, the entire track plate 44 can be removed.

[0044] On the contrary, when installing the track plate 44, the track plate 44 is inserted into the installation groove 43. Since the limit strip 49 is pressed into the second transverse groove 48, it can be directly installed. When entering the position of the first transverse groove 47, the limit strip 49 will be inserted into the first transverse groove 47 under the action of the third spring 50 to complete the installation.

[0045] As a specific implementation method of the improvement, The limiting groove 52 is provided with a second inclined surface 53 for cooperating with the first inclined surface 51 , and one end of the limiting strip 49 for extending into the first transverse groove 47 is provided with a third inclined surface 54 .

[0046] Through the above technical solution, the first inclined surface 51 and the second inclined surface 53 cooperate to make the sliding block 46 more easily drive the limit bar 49 to move during the pressing process. Through the setting of the third inclined surface 54, the track plate 44 can move along the third inclined surface 54 when it is installed, so that the installation is more convenient.

[0047] As a specific implementation method of the improvement, The mounting groove is provided with a first threaded hole 55 , the track plate 44 is provided with a second threaded hole 56 for cooperating with the first threaded hole 55 , the first threaded hole 55 and the second threaded hole 56 are internally threadedly connected with screws 57 , and a second sealing ring 58 is provided at the connection between the track plate 44 and the mounting groove 43 .

[0048] According to the above technical solution, the screw 57 is screwed in through the cooperation of the first threaded hole 55 and the second threaded hole 56 to fix the track plate 44 . In addition, the second sealing ring 58 is provided to improve the sealing of the track plate 44 .

[0049] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A valve suitable for short-frequency and fast operation, characterized in that: include: Valve body (1), valve core, valve stem (3); The valve body (1) is provided with an outlet (4), a valve cavity (5), and an inlet (6) which are in communication with each other. The valve core is arranged in the valve cavity (5). The valve core comprises a bracket (2) and a plugging head (7) for opening and closing the inlet (6). An installation cavity (8) is arranged in the bracket (2). A connecting rod (9) is arranged on the bracket (2). The connecting rod (9) is located in the installation cavity (8). A sliding block (10) is arranged on the bracket (2) in a direction facing the inner wall of the valve cavity (5) and relative to the connecting rod (9). An annular sliding track (11) for the sliding block (10) to slide is arranged in the valve cavity (5). One end of the valve stem (3) extends deep into the valve cavity (5) and the other end extends out of the valve body (1). A slot (12) is arranged on the valve stem (3), and the connecting rod (9) is located in the slot (12).

2. A valve suitable for short-frequency fast operation according to claim 1, characterized in that: The support (2) comprises a first connecting ring (13) and a second connecting ring (14); the first connecting ring (13) and the second connecting ring (14) are respectively located at the inlet (6) and the outlet (4); the first connecting ring (13) and the second connecting ring (14) are connected via a connecting plate (15); and the connecting rod (9) and the sliding block (10) are arranged on the connecting plate (15).

3. A valve suitable for short-frequency fast operation according to claim 2, characterized in that: A mounting plate (16) is provided on the first connecting ring (13), a hollow groove (17) is formed between the mounting plate (16) and the first connecting ring (13), and the plugging head (7) is provided on the mounting plate (16).

4. A valve suitable for short-frequency fast operation according to claim 3, characterized in that: The valve body (1) comprises a cylinder (18), a first valve cover (19), and a second valve cover (20); the first valve cover (19) and the second valve cover (20) are respectively mounted at two ends of the cylinder (18); the inlet (6) is located on the first valve cover (19), the outlet (4) is located on the second valve cover (20), the valve cavity is located on the cylinder (18), and the cylinder (18) is also provided with a through hole (21) for the valve stem (3) to pass through.

5. A valve suitable for short-frequency fast operation according to claim 4, characterized in that: The first valve cover (19) is provided with a mounting hole (22), a valve seat (23) is installed in the mounting hole (22), a flow port (24) communicating with the inlet (6) is provided on the valve seat (23), and one end of the valve seat (23) is used to cooperate with the plugging head (7); The valve seat (23) is provided with a first step (25), a first recessed platform (26) for cooperating with the first step (25) is provided in the mounting hole (22), a positioning hole (27) is provided on the first recessed platform (26), a first spring (28) is provided in the positioning hole (27), and one end of the first spring (28) is in contact with the first step (25).

6. A valve suitable for short-frequency fast operation according to claim 5, characterized in that: The mounting hole (22) is provided with an annular groove (29), a snap ring (30) is installed in the annular groove (29), and the first protrusion is limited between the snap ring (30) and the first concave stage (26); A second boss (31) is provided on the valve seat (23), a mounting gap (32) is formed between the second boss (31) and the inner wall of the mounting hole (22), and a first sealing ring (33) is provided in the mounting gap (32).

7. A valve suitable for short-frequency fast operation according to claim 6, characterized in that: The mounting plate (16) is provided with an insertion rod (34), the plugging head (7) is provided with an insertion groove (35) for inserting the insertion rod (34), the insertion rod (34) is provided with a conducting hole (36), the conducting hole (36) is in conduction with the insertion groove (35), a second spring (37) is provided in the insertion groove (35), the conducting hole (36) has an internal thread (38) at one end facing away from the insertion groove (35), a first bolt (39) is threadedly connected to the internal thread (38), two ends of the second spring (37) abut against the first bolt (39) and the inner wall of the insertion groove (35), the insertion rod (34) is provided with a limiting slide groove (40), the plugging head (7) is provided with a third threaded hole (41), a second bolt (42) is threadedly connected to the third threaded hole (41), and one end of the second bolt (42) enters the limiting slide groove (40).

8. A valve suitable for short-frequency fast operation according to claim 6, characterized in that: The cylinder (18) is provided with a mounting groove (43), a track plate (44) is detachably mounted on the mounting groove (43), the sliding track (11) is arranged on the track plate (44), a sliding groove (45) is provided on the track plate (44), a sliding block (46) is slidably connected to the sliding groove (45), the sliding block (46) is arranged on the sliding track (11), a first transverse groove (47) is provided on the mounting groove (43), and a guide plate (47) is provided on the track plate (44) that is in conduction with the sliding groove (45). The second transverse groove (48) is provided with a limit strip (49) for inserting into the first transverse groove (47), the second transverse groove (48) is provided with a third spring (50) for keeping the limit strip (49) entering the first transverse groove (47), the third spring (50) abuts against the limit strip (49) and the inner wall of the second transverse groove (48), the sliding block (46) is provided with a first inclined surface (51), and the limit strip (49) is provided with a limit slot (52) for cooperating with the first inclined surface (51).

9. A valve suitable for short-frequency fast operation according to claim 8, characterized in that: The limiting groove (52) is provided with a second inclined surface (53) for cooperating with the first inclined surface (51), and one end of the limiting strip (49) for extending into the first transverse groove (47) is provided with a third inclined surface (54).

10. A valve suitable for short-frequency fast operation according to claim 9, characterized in that: The mounting groove is provided with a first threaded hole (55), the track plate (44) is provided with a second threaded hole (56) for cooperating with the first threaded hole (55), the first threaded hole (55) and the second threaded hole (56) are internally threadedly connected with a screw (57), and a second sealing ring (58) is provided at the connection between the track plate (44) and the mounting through groove (43).

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