A valve suitable for short, frequent and fast operations

Abstract

The present invention discloses a valve suitable for short-frequency-fast operation, comprising: a valve body, a valve core, and a valve rod; an outlet, a valve cavity, and an inlet that are mutually communicated are arranged in the valve body, the valve core is arranged in the valve cavity, the valve core includes a bracket and a plug 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 in the direction towards 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 rod extends deep into the valve cavity, and the other end extends out of the valve body, a slot is arranged on the valve rod, and the connecting rod is located in the slot. The purpose of the present invention is to provide a valve suitable for short-frequency-fast operation.

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:

[0007] A valve suitable for short-frequency and fast operation, comprising: a valve body, a valve core, and a valve stem;

[0008] 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.

[0009] As a further improvement of the present invention,

[0010] 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.

[0011] As a further improvement of the present invention,

[0012] An installation plate is provided on the first connection ring, an empty slot is formed between the installation plate and the first connection ring, and the plugging head is arranged on the installation plate.

[0013] As a further improvement of the present invention,

[0014] The valve body includes a cylinder body, a first valve cover, and a second valve cover. The first valve cover and the second valve cover are respectively installed at both ends of the cylinder body. The inlet is located on the first valve cover, the outlet is located on the second valve cover, the valve cavity is located on the cylinder body, and a through hole for the valve rod to pass through is also provided on the cylinder body.

[0015] As a further improvement of the present invention,

[0016] An installation hole is provided on the valve cover, a valve seat is installed in the installation 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;

[0017] The valve seat is provided with a first stepped platform, a first concave platform for cooperating with the first stepped platform is provided in the installation hole, a positioning hole is provided on the first concave platform, a first spring is provided in the positioning hole, and one end of the first spring abuts against the first stepped platform.

[0018] As a further improvement of the present invention,

[0019] An annular groove is provided on the installation hole, a snap ring is installed in the annular groove, and the first stepped platform is limited between the snap ring and the first concave platform;

[0020] A second convex platform is provided on the first valve seat, there is an installation gap between the second convex platform and the inner wall of the installation hole, and a first sealing ring is provided in the installation gap.

[0021] As a further improvement of the present invention,

[0022] An insertion rod is provided on the installation plate, an insertion slot for the insertion rod to insert is provided on the plugging head, a guide through hole is provided on the insertion rod, the guide through hole communicates with the insertion slot, a second spring is provided in the insertion slot, the end of the guide through hole facing away from the insertion slot has internal threads, a first bolt is threadedly connected to the internal threads, both ends of the second spring abut against the first bolt and the inner wall of the insertion slot, a limiting sliding groove is provided on the insertion rod, a third threaded hole is provided on the plugging head, and a second bolt is threadedly connected to the third threaded hole, and one end of the second bolt enters the limiting sliding groove.

[0023] As a further improvement of the present invention,

[0024] An installation through groove is provided on the cylinder body. A track plate is detachably installed on the installation through groove. The sliding track is arranged on the track plate. A sliding groove is provided on the track plate. A sliding block is slidably connected to the sliding groove. The sliding block is arranged on the sliding track. A first horizontal groove is provided on the installation through groove. A second horizontal groove communicating with the sliding groove is provided on the track plate. A limiting strip for inserting into the first horizontal groove is provided on the second horizontal groove. A third spring for keeping the limiting strip entering the first horizontal groove is arranged in the second horizontal groove. The third spring abuts against the limiting strip and the inner wall of the second horizontal groove. A first inclined surface is provided on the sliding block. A limiting groove for cooperating with the first inclined surface is provided on the limiting strip.

[0025] As a further improvement of the present invention,

[0026] The limiting groove is provided with a second inclined surface for cooperating with the first inclined surface. A third inclined surface is provided at one end of the limiting strip for extending into the first horizontal groove.

[0027] As a further improvement of the present invention,

[0028] A first threaded hole is provided on the installation groove. A second threaded hole for cooperating with the first threaded hole is provided on the track plate. A screw is threadedly connected in the first threaded hole and the second threaded hole. A second sealing ring is arranged at the connection between the track plate and the installation through groove.

[0029] The beneficial effects of the present invention are as follows: One end of the valve stem extends deep into the valve cavity. A slot is provided on the valve stem. The slot cooperates with the connecting rod. In this way, when the valve stem is rotated, the connecting rod will be driven to move, thereby pushing the entire bracket to move. Also, since a sliding block is provided on the bracket and the sliding block cooperates with the sliding track, the bracket will generate a slight rotation when moving back and forth and will not move away from the sliding track. At this time, the opening and closing of the inlet by the plug can be completed. As the valve stem rotates continuously and the sliding track is annular, after the plug 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 according to the process requirements, the sliding track can be set into various annular shapes such as circular, oval, triangular, quadrilateral, etc., which can adapt to various process requirements. At the same time, the entire bracket and the plug will also rotate axially. The rotation of the bracket can play a role in scraping the inner wall, and the rotation of the plug can also appropriately clean the inlet and reduce blockage. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0031] Figure 2 It is a schematic diagram of the mating structure when closed in the first embodiment of the present invention;

[0032] Figure 3 Explosion structure schematic diagram of Embodiment 1 of the present invention;

[0033] Figure 4 Schematic diagram of the spool mating structure when opened in Embodiment 1 of the present invention;

[0034] Figure 5 Schematic diagram of the cylinder structure in Embodiment 1 of the present invention;

[0035] Figure 6 Internal structure schematic diagram of Embodiment 2 of the present invention;

[0036] Figure 7 For Figure 6 Local enlarged view of part A;

[0037] Figure 8 Schematic diagram of the structure when detachable in Embodiment 3 of the present invention;

[0038] Figure 9 Schematic diagram of the structure when non - detachable in Embodiment 3 of the present invention;

[0039] Figure 10 Internal structure schematic diagram of Embodiment 4 of the present invention.

[0040] Reference numerals:

[0041] 1, valve body; 2, bracket; 3, valve stem; 4, outlet; 5, valve cavity; 6, inlet; 7, plugging head; 8, installation 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 slot; 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; 27, positioning hole; 28, first spring; 29, annular groove; 30, snap ring; 31, second boss; 32, installation gap; 33, first sealing ring; 34, inserting rod; 35, inserting groove; 36, guiding through - hole; 37, second spring; 38, internal thread; 39, first bolt; 40, limiting sliding groove; 41, third threaded hole; 42, second bolt; 43, installation through - slot; 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 implementation manners

[0042] The present invention will be further described in detail below with reference to the embodiments given in the drawings.

[0043] Example 1:

[0044] A valve suitable for short - frequency - fast operation, comprising: a valve body 1, a valve core, and a valve stem 3;

[0045] An outlet 4, a valve cavity 5, and an inlet 6 that are mutually communicated are provided inside the valve body 1. The valve core is arranged in the valve cavity 5. The valve core includes a bracket 2 and a plug 7 for opening and closing the inlet 6. An installation cavity 8 is provided inside the bracket 2. A connecting rod 9 is provided on the bracket 2. The connecting rod 9 is located inside the installation cavity 8. A sliding block 10 is provided on the bracket 2 in the direction towards 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 provided in the valve cavity 5. One end of the valve stem 3 extends into the valve cavity 5, and the other end extends outside the valve body 1. A slot 12 is provided on the valve stem 3. The connecting rod 9 is located in the slot 12.

[0046] Through the above - mentioned technical solution, one end of the valve stem 3 extends into the valve cavity 5, and the slot 12 is provided on the valve stem 3. The slot 12 cooperates with the connecting rod 9. Thus, when the valve stem 3 is rotated, the connecting rod 9 will be driven to move, thereby pushing the entire bracket 2 to move. Also, since the sliding block 10 is provided on the bracket 2 and the sliding block 10 cooperates with the sliding track 11, when the bracket 2 moves back and forth, it will produce a slight rotation and will not break away from the sliding track 11 to carry out the movement. At this time, the opening and closing of the inlet 6 by the plug 7 can be completed. As the valve stem 3 rotates continuously, the sliding track 11 is annular. After the plug 7 opens the inlet 6, it will continue to block the inlet 6. In this way, the opening and closing of the valve can be controlled quickly with short - frequency, and according to the needs of the process, the sliding track 11 can be set into various annular shapes such as circular, elliptical, triangular, and quadrilateral, which can adapt to various process requirements. At the same time, the entire bracket 2 and the plug 7 will also rotate axially. The rotation of the bracket 2 can play a role in scraping the inner wall, and the rotation of the plug 7 can also appropriately clean the inlet 6 to reduce blockage.

[0047] As a specific improvement embodiment,

[0048] The bracket 2 includes 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 by a connecting plate 15. The connecting rod 9 and the sliding block 10 are arranged on the connecting plate 15.

[0049] Through the above - mentioned technical solution, the bracket 2 is composed of the first connecting ring 13 and the second connecting ring 14 and is connected by the connecting plate 15. In this way, the bracket 2 has a simple structure and is light in weight. At the same time, there are more voids for the fluid to pass through, and it does not affect the overall structural stability.

[0050] As a specific improvement embodiment,

[0051] An installation plate 16 is provided on the first connecting ring 13. An empty groove 17 is formed between the installation plate 16 and the first connecting ring 13. The plugging head 7 is arranged on the installation plate 16.

[0052] Through the above technical solution, due to the provision of the installation plate 16, there is sufficient space for installing the plugging head 7.

[0053] As a specific improvement embodiment,

[0054] The valve body 1 includes a cylinder body 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 body 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 body 18, and a through hole 21 for the valve stem 3 to pass through is also provided on the cylinder body 18.

[0055] Through the above technical solution, during installation, the bracket 2 and the valve stem 3 can be inserted into the cylinder body 18, and then the first valve cover 19 and the second valve cover 20 are installed. This makes the assembly easier. And in this embodiment, the first valve cover 19, the second valve cover 20, and the cylinder body 18 are mainly fixedly connected through screw holes and bolts.

[0056] As a specific improvement embodiment,

[0057] An installation hole 22 is provided on the first valve cover 19. A valve seat 23 is installed in the installation hole 22. A communication port 24 communicating with the inlet 6 is provided on the valve seat 23. One end of the valve seat 23 is used to cooperate with the plugging head 7;

[0058] The valve seat 23 is provided with a first stepped platform 25. A first concave platform 26 for cooperating with the first stepped platform 25 is provided in the installation hole 22. A positioning hole 27 is provided on the first concave platform 26. A first spring 28 is provided in the positioning hole 27. One end of the first spring 28 abuts against the first stepped platform 25.

[0059] Through the above technical solution, due to the provision of the installation hole 22, the installation position of the valve seat 23 is provided. Due to the provision of the first spring 28, the first spring 28 continuously maintains a force to push the valve seat 23 towards the inside of the valve cavity 5 to cooperate with the plugging head 7, so that the closing effect of the plugging head 7 is better.

[0060] As a specific improvement embodiment,

[0061] An annular groove 29 is provided on the installation hole 22. A snap ring 30 is installed in the annular groove 29. The first stepped platform is limited between the snap ring 30 and the first concave platform 26;

[0062] A second boss 31 is provided on the valve seat 23. There is an installation gap 32 between the second boss 31 and the inner wall of the installation hole 22, and a first sealing ring 33 is arranged in the installation gap 32.

[0063] Through the above technical solution, by providing the annular groove 29 and the snap ring 30, the valve seat 23 can be fixed. At the same time, the setting of the first sealing ring 33 improves the sealing performance of the valve seat 23.

[0064] Embodiment Two:

[0065] The following improvements are made on the basis of Embodiment One:

[0066] An insertion rod 34 is provided on the mounting plate 16. An insertion groove 35 for the insertion rod 34 to insert is provided on the plugging head 7. A guide through hole 36 is provided on the insertion rod 34. The guide through hole 36 communicates with the insertion groove 35. A second spring 37 is arranged in the insertion groove 35. One end of the guide through hole 36 facing away from the insertion groove 35 has an internal thread 38. A first bolt 39 is threadedly connected to the internal thread 38. Both ends of the second spring 37 abut against the first bolt 39 and the inner wall of the insertion groove 35. A limiting sliding groove 40 is provided on the insertion rod 34. A third threaded hole 41 is provided on the plugging head 7. A second bolt 42 is threadedly connected to the third threaded hole 41. One end of the second bolt 42 enters the limiting sliding groove 40.

[0067] Through the above technical solution, after the valve is used for a long time, the cooperation between the plugging head 7 and the valve seat 23 will become less and less tight. There are many reasons for this. Through the setting of this embodiment, by rotating the first bolt 39, the second spring 37 can be elastically deformed, so as to change the force of the spring, and then change the force pushing the plugging head 7 towards the valve seat 23, further adjusting the external force of the plugging head 7, and thus adjusting the acting force when the plugging head 7 and the valve seat 23 are closed. And through the setting of the second bolt 42, the second bolt 42 is restricted in the limiting sliding groove 40 to prevent the plugging head 7 from detaching from the insertion rod 34.

[0068] Embodiment Three:

[0069] The following improvements are made on the basis of Embodiment One:

[0070] An installation through groove 43 is provided on the cylinder body 18. A track plate 44 is detachably installed on the installation through 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 installation through groove 43. A second transverse groove 48 communicating with the sliding groove 45 is provided on the track plate 44. A limiting strip 49 for inserting into the first transverse groove 47 is provided on the second transverse groove 48. A third spring 50 for keeping the limiting strip 49 entering the first transverse groove 47 is arranged in the second transverse groove 48. The third spring 50 abuts against the limiting strip 49 and the inner wall of the second transverse groove 48. A first inclined surface 51 is provided on the sliding block 46. A limiting groove 52 for cooperating with the first inclined surface 51 is provided on the limiting strip 49.

[0071] Through the above technical solution, a method for conveniently replacing the sliding track 11 is provided. When it is necessary to adjust the opening and closing strategy, 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, causing the sliding block 46 to move downward. The first inclined surface 51 is provided on the sliding block 46. When cooperating with the limiting groove 52, it will drive the limiting strip 49 to move, causing the limiting strip 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 disassembled. In the embodiment, when the sealing head 7 completely closes the valve, the sliding block 10 abuts against the sliding block 46. In this way, replacement can be achieved when the valve is closed.

[0072] On the contrary, when installing the track plate 44, the track plate 44 is inserted into the installation through groove 43. Since the limiting strip 49 is pressed into the second transverse groove 48, it can be directly inserted. When reaching the position of the first transverse groove 47, under the action of the third spring 50, the limiting strip 49 will be inserted into the first transverse groove 47 to complete the installation.

[0073] As a specific implementation of the improvement,

[0074] The limiting groove 52 is provided with a second inclined surface 53 for cooperating with the first inclined surface 51. One end of the limiting strip 49 for extending into the first transverse groove 47 is provided with a third inclined surface 54.

[0075] Through the above technical solution, through the cooperation of the first inclined surface 51 and the second inclined surface 53, when the sliding block 46 is pressed down, it is easier to drive the limiting strip 49 to move. Through the setting of the third inclined surface 54, when the track plate 44 is installed, it can move along the third inclined surface 54, so the installation is more convenient.

[0076] As a specific implementation of the improvement,

[0077] A first threaded hole 55 is provided on the installation groove, and a second threaded hole 56 for cooperating with the first threaded hole 55 is provided on the track slab 44. A screw 57 is threadedly connected in the first threaded hole 55 and the second threaded hole 56. A second sealing ring 58 is provided at the connection between the track slab 44 and the installation through groove 43.

[0078] Through the above technical solution, by the cooperation of the first threaded hole 55 and the second threaded hole 56, the screw 57 is screwed in to complete the fixation of the track slab 44. And the setting of the second sealing ring 58 can improve the sealing of the track slab 44.

[0079] Embodiment 4:

[0080] The following improvements are made on the basis of Embodiment 2: It is equivalent to combining Embodiment 2 and Embodiment 3.

[0081] An installation through groove 43 is provided on the cylinder body 18. A track slab 44 is detachably installed on the installation through groove 43. The sliding track 11 is arranged on the track slab 44. A sliding groove 45 is provided on the track slab 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 installation through groove 43. A second transverse groove 48 communicated with the sliding groove 45 is provided on the track slab 44. A limiting strip 49 for inserting into the first transverse groove 47 is provided on the second transverse groove 48. A third spring 50 for keeping the limiting strip 49 entering the first transverse groove 47 is arranged in the second transverse groove 48. The third spring 50 abuts against the limiting strip 49 and the inner wall of the second transverse groove 48. A first inclined surface 51 is provided on the sliding block 46. A limiting groove 52 for cooperating with the first inclined surface 51 is provided on the limiting strip 49.

[0082] Through the above technical solution, a method for conveniently replacing the sliding track 11 is provided. When it is necessary to replace the sliding track 11, the valve rod 3 is rotated so that the sliding block 10 abuts against the sliding block 46, causing the sliding block 46 to move downward. The first inclined surface 51 is provided on the sliding block 46. When cooperating with the limiting groove 52, it will drive the limiting strip 49 to move, causing the limiting strip 49 to disengage from the first transverse groove 47, and the third spring 50 will be compressed. At this time, the entire track slab 44 can be disassembled.

[0083] On the contrary, when installing the track slab 44, the track slab 44 is inserted into the installation through groove 43. Since the limiting strip 49 is pressed into the second transverse groove 48, it can be directly inserted. When reaching the position of the first transverse groove 47, under the action of the third spring 50, the limiting strip 49 will be inserted into the first transverse groove 47 to complete the installation.

[0084] As a specific implementation of the improvement,

[0085] 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.

[0086] Through the above technical solution, through the cooperation of the first inclined surface 51 and the second inclined surface 53, when the sliding block 46 is pressed down, it is easier to drive the limiting strip 49 to move. Through the setting of the third inclined surface 54, when the track plate 44 is installed, it can move along the third inclined surface 54, so the installation is more convenient.

[0087] As a specific implementation of the improvement,

[0088] The installation 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 threaded with a screw 57, and a second sealing ring 58 is arranged at the connection between the track plate 44 and the installation through groove 43.

[0089] Through the above technical solution, through the cooperation of the first threaded hole 55 and the second threaded hole 56, the screw 57 is screwed in to complete the fixation of the track plate 44. And the setting of the second sealing ring 58 can improve the sealing of the track plate 44.

[0090] The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements 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). The bracket (2) is provided with an installation cavity (8). A connecting rod (9) is provided on the bracket (2). The connecting rod (9) is located in the installation cavity (8). A sliding block (10) is provided 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 sliding the sliding block (10) is provided in the valve cavity (5). One end of the valve stem (3) is deeply inserted into the valve cavity (5), and the other end extends out of the valve body (1). A slot (12) is provided on the valve stem (3), and the connecting rod (9) is located in the slot (12). 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 further provided with a through hole (21) for the valve stem (3) to pass through; 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).

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 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).

5. A valve suitable for short-frequency fast operation according to claim 4, characterized in that: An annular groove (29) is provided on the mounting hole (22), a snap ring (30) is installed in the annular groove (29), and the first step (25) is limited between the snap ring (30) and the first concave step (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).

6. A valve suitable for short-frequency fast operation according to claim 5, 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).

7. A valve suitable for short-frequency fast operation according to claim 6, 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).

8. A valve suitable for short-frequency fast operation according to claim 7, characterized in that: The mounting through groove (43) 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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