A high stability impact resistant hydraulic throttle valve

Abstract

The present invention discloses a high-stability impact-resistant hydraulic throttle valve, which relates to the technical field of throttle valves. A sealing plate corresponds to an output port of an airbag. When a movable seat tops the sealing plate, it moves to the output port position of the airbag, thereby communicating with the output port of the airbag. When the screw rod moves upward, it also drives the clamping frame to squeeze the airbag. When the airbag is squeezed, the internal pressure changes. When the movable seat moves to the airbag position, the gas will flow to the movable seat position, and the airflow will drive the impurities on the conical filter to move into the collection box, thereby realizing the cleaning of the conical filter. The movable box is movably connected to the movable seat. When the movable seat drives the conical filter to move to the through-pipe position, the liquid in the through-pipe will pass through the conical filter to reach the storage chamber. The liquid can be filtered when passing through the conical filter, and the filtered liquid will not directly cause erosion to the valve core, thereby protecting the valve core, thereby improving the overall service life of the throttle valve.

Description

Technical Field

[0001] The invention relates to the technical field of throttle valves, in particular to a high-stability impact-resistant hydraulic throttle valve. Background Art

[0002] A throttle valve is a valve that controls the flow of a fluid by changing the throttle section or throttle length. A throttle valve and a check valve can be connected in parallel to form a one-way throttle valve. A throttle valve and a one-way throttle valve are simple flow control valves. In a quantitative pump hydraulic system, a throttle valve and a relief valve can be used together to form three types of throttle speed control systems, namely, an oil inlet throttle speed control system, an oil return throttle speed control system, and a bypass throttle speed control system. A throttle valve does not have a negative flow feedback function and cannot compensate for speed instability caused by load changes. It is generally only used in situations where load changes are not large or where speed stability requirements are not high.

[0003] When high-pressure fluid passes through the throttle valve, it will be collided by large particles in the fluid. The particles in the fluid will be eroded by the particles when passing through the valve core. The valve core will be damaged after being used for a period of time, which greatly reduces the service life of the throttle valve and increases its use cost. Summary of the invention

[0004] Technical issues solved

[0005] In view of the deficiencies in the prior art, the present invention provides a high-stability, impact-resistant hydraulic throttle valve.

[0006] Technical Solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a high-stability impact-resistant hydraulic throttle valve, comprising a valve body, a valve stem and a valve core, a liquid cavity is arranged inside the valve body, the liquid cavity is communicated with a liquid inlet, a through pipe is arranged on the side wall of the liquid cavity, the through pipe is communicated with a movable box of the valve body, a movable seat is movably connected inside the movable box, a conical filter is detachably connected to the movable seat, the movable seat is communicated with the through pipe, a storage cavity is arranged inside the valve body, the storage cavity is detachably connected with the same through pipe, the through pipe on the storage cavity corresponds to the position of the through pipe in the liquid cavity, the movable seat is slidably connected inside the movable box, an airbag is detachably connected to the outside of the movable box, the airbag is located on a clamping frame, the output port of the airbag is communicated with the movable seat, and a collecting box is arranged on the movable box on the other side corresponding to the airbag.

[0008] Preferably, the storage chamber is detachably connected with a lower tube, the lower tube is communicated with the liquid discharge port, the inner diameter of the lower tube is the same as the outer diameter of the valve core, and the output end of the valve core is conically arranged.

[0009] The large port of the conical filter screen of the movable seat faces the liquid cavity, the small port of the conical filter screen is closed, and the small port of the conical filter screen faces the storage cavity.

[0010] The movable box is provided with a limiting frame inside, and the limiting frames are respectively vertically mounted on both sides of the inner wall of the movable box, and the limiting frames are arranged parallel to each other.

[0011] A moving seat is slidably connected to the limiting frame inside the movable box. The diameter of the moving seat is larger than the diameter of the through pipe, and the inner diameter of the moving seat is the same as the diameter of the through pipe.

[0012] A screw rod is rotatably connected to the movable seat, the screw rod is vertically connected in the movable box, and one end of the screw rod is located outside the movable box.

[0013] A knob is arranged on the screw rod outside the movable box, and a clamping frame is rotatably connected to the screw rod outside the movable box, and the clamping frame is arranged in an S shape as a whole.

[0014] The upper end of the movable box is L-shaped, an airbag is installed between the upper end of the movable box and the lower end of the clamping frame, and a sealing plate is provided inside the movable box connected to the airbag output port.

[0015] The sealing plate is provided with a guide rail, a guide groove is provided on a limiting frame corresponding to the guide rail, and the guide rail is slidably connected inside the corresponding guide groove.

[0016] A return spring is detachably connected to the guide rail inside the guide groove, and the return spring is vertically arranged in the guide groove.

[0017] Beneficial Effects

[0018] The present invention provides a high-stability impact-resistant hydraulic throttle valve, which has the following beneficial effects:

[0019] This high-stability, impact-resistant hydraulic throttle valve has a liquid cavity arranged inside the valve body. The liquid in the liquid cavity will store the liquid, and the liquid will eventually flow away through the through pipe on the side wall of the liquid cavity. The through pipe is connected to a movable box, and the movable box is movably connected to a movable seat. When the movable seat drives the conical filter to move to the through pipe position, the liquid in the through pipe will pass through the conical filter to reach the storage cavity. The liquid can be filtered when passing through the conical filter, and the filtered liquid will not directly cause erosion to the valve core, thereby protecting the valve core and improving the overall service life of the throttle valve.

[0020] The invention discloses a high-stability impact-resistant hydraulic throttle valve. A limit frame is arranged in a movable box of a valve body. A moving seat is installed on the limit frame. The moving seat can move on the limit frame. The limit frame will limit the moving seat, and the moving seat will not be in a swinging state, so that it is close to the inner walls of both sides of the movable box. The moving seat will be closely connected with the through pipes on both sides to prevent liquid from being discharged from the gaps between the two ports of the moving seat. When the throttle valve is not in use, the screw rod can be rotated to move the moving seat upward. The moving seat will drive the conical filter screen to move upward. During the upward movement of the moving seat, the sealing plate will be pushed. The sealing plate will be pushed upward. The sealing plate corresponds to the output port of the airbag. When the moving seat pushes the sealing plate, it will move to the output port position of the airbag, so as to communicate with the output port of the airbag. When the screw rod moves upward, it will also drive the clamping frame to squeeze the airbag. When the airbag is squeezed, the internal pressure changes. When the moving seat moves to the position of the airbag, the gas will flow to the position of the moving seat. The airflow will drive the impurities on the conical filter screen to move into the collecting box, so as to realize the cleaning of the conical filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0022] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0023] Figure 3 It is a connection schematic diagram of the valve core in the present invention;

[0024] Figure 4 It is a structural schematic diagram of the screw in the present invention;

[0025] Figure 5 It is a schematic diagram of the structure of the conical filter screen in the present invention.

[0026] In the figure:

[0027] 1. Valve body; 2. Movable box; 3. Clamp; 4. Air bag; 5. Valve stem; 6. Knob; 7. Collection box; 8. Liquid chamber; 9. Through pipe; 10. Valve core; 11. Storage chamber; 12. Lower pipe; 13. Liquid discharge port; 14. Liquid inlet; 15. Screw; 16. Sealing plate; 17. Reset spring; 18. Guide rail; 19. Guide groove; 20. Limiting frame; 21. Moving seat; 22. Conical filter; DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-Figure 5 The present invention provides a high-stability impact-resistant hydraulic throttle valve, comprising a valve body 1, a valve stem 5 and a valve core 10. A liquid cavity 8 is arranged inside the valve body 1, and the liquid cavity 8 is communicated with a liquid inlet 14. A through pipe 9 is arranged on the side wall of the liquid cavity 8, and the through pipe 9 is communicated with a movable box 2 of the valve body 1. A movable seat 21 is movably connected inside the movable box 2, and a conical filter screen 22 is detachably connected to the movable seat 21. The movable seat 21 is communicated with the through pipe 9. A storage cavity 11 is arranged inside the valve body 1, and the same through pipe 9 is detachably connected to the storage cavity 11. The through pipe 9 on the storage cavity 11 corresponds to the position of the through pipe 9 of the liquid cavity 8. The movable seat 21 is slidably connected inside the movable box 2, and an air bag 4 is detachably connected to the outside of the movable box 2. The air bag 4 is located on the clamping frame 3, and the output port of the air bag 4 is communicated with the movable seat 21. A collecting box 7 is arranged on the movable box 2 on the other side corresponding to the air bag 4.

[0030] A limit frame 20 is provided in the movable box 2 of the valve body 1, and a moving seat 21 is installed on the limit frame 20. The moving seat 21 can move on the limit frame 20, and the limit frame 20 will limit the moving seat 21, so that the moving seat 21 will not be in a swinging state, thereby being close to the inner walls of the movable box 2 on both sides, and the moving seat 21 will be tightly connected with the through pipes 9 on both sides to prevent the liquid from being discharged from the gaps between the two ports of the moving seat 21. When the throttle valve is not in use, the screw 15 can be rotated to move the moving seat 21 upward, and the moving seat 21 will drive the conical filter screen 22 to move upward. During the upward movement of the moving seat 21, the sealing plate 16 will be pushed, and the sealing plate 16 will be pushed up, and the sealing plate 16 corresponds to the output port of the airbag 4. When the moving seat 21 pushes away the sealing plate 16, it will move to the output port position of the airbag 4, thereby communicating with the output port of the airbag 4, and the screw 15 will also drive the clamping frame when it moves upward. 3 The airbag 4 is squeezed. When the airbag 4 is squeezed, the internal pressure changes. When the movable seat 21 moves to the position of the airbag 4, the gas will flow to the position of the movable seat 21, and the airflow will drive the impurities on the conical filter 22 to move to the collection box 7, so as to realize the cleaning of the conical filter 22. By arranging a liquid cavity 8 inside the valve body 1, the liquid cavity 8 will store the liquid entering, and the liquid will finally flow away through the through pipe 9 on the side wall of the liquid cavity 8. The through pipe 9 is connected to the movable box 2, and the movable box 2 is movably connected to the movable seat 21. When the movable seat 21 drives the conical filter 22 to move to the position of the through pipe 9, the liquid in the through pipe 9 will pass through the conical filter 22 to reach the storage cavity 11. The liquid can be filtered when passing through the conical filter 22, and the filtered liquid will not directly cause erosion to the valve core 10, thereby protecting the valve core 10, thereby improving the overall service life of the throttle valve.

[0031] The storage chamber 11 is detachably connected with a lower tube 12, which is communicated with a liquid discharge port 13. The inner diameter of the lower tube 12 is the same as the outer diameter of the valve core 10, and the output end of the valve core 10 is set in a conical shape. By installing the lower tube 12 on the storage chamber 11, the liquid in the storage chamber 11 can flow to the lower tube 12 and finally be discharged through the liquid discharge port 13. The lower tube 12 can be connected to the valve core 10. When the valve core 10 enters the lower tube 12, the lower tube 12 is in a closed state, and the liquid cannot flow. When the valve core 10 enters the storage chamber 11, the maximum flow of liquid can be achieved, and the process of the valve core 10 gradually moving into the storage chamber 11 can achieve flow control.

[0032] The large port of the conical filter 22 of the movable seat 21 faces the liquid chamber 8, and the small port of the conical filter 22 is closed, and the small port of the conical filter 22 faces the storage chamber 11. The installation direction of the conical filter 22 is set according to the flow direction of the liquid, and the liquid will first pass through the large port of the conical filter 22, and the liquid will be filtered when passing through the conical filter 22. The filtered liquid continues to flow and reaches the storage chamber 11. Through the setting of the conical filter 22, when the conical filter 22 moves up, the large port will correspond to the input port of the collection box 7, so that the impurities on the conical filter 22 are conveniently discharged into the collection box 7.

[0033] The movable box 2 is provided with a limit frame 20, which is respectively installed vertically on both sides of the inner wall of the movable box 2, and the limit frames 20 are arranged parallel to each other. By providing the limit frame 20 in the movable box 2, the limit frame 20 can improve the guidance of the movable seat 21, and the movable seat 21 will not be offset when moving, thereby ensuring that the moving direction of the movable seat 21 will not change, and the movable seat 21 can be accurately connected to the through pipe 9 when resetting.

[0034] A movable seat 21 is slidably connected to the limiting frame 20 inside the movable box 2. The diameter of the movable seat 21 is larger than the diameter of the through pipe 9, and the inner diameter of the movable seat 21 is the same as the diameter of the through pipe 9. The through pipes 9 on both sides can be connected to each other by the arrangement of the movable seat 21. When the diameter of the movable seat 21 is larger than the diameter of the through pipe 9, the movable seat 21 can be sealed when it moves to the position of the through pipe 9, and the connection between the through pipe 9 and the movable seat 21 will not easily leak liquid.

[0035] The movable seat 21 is rotatably connected with a screw rod 15, which is vertically connected to the movable box 2, and one end of the screw rod 15 is located outside the movable box 2. By arranging the screw rod 15 on the movable box 2, the screw rod 15 can be moved on the movable box 2, and the movable box 2 is provided with a knob 6. By manipulating the knob 6, the screw rod 15 can be controlled, and the screw rod 15 can be moved on the movable box 2. When moving, the movable seat 21 can be driven to move, and the movable seat 21 can move up and down in the movable box 2.

[0036] The screw rod 15 outside the movable box 2 is provided with a knob 6, and the screw rod 15 outside the movable box 2 is rotatably connected with the clamping frame 3, and the clamping frame 3 is arranged in an S shape as a whole. When the clamping frame 3 is installed on the screw rod 15, the screw rod 15 can drive the clamping frame 3 to move up and down, and when the screw rod 15 drives the moving seat 21 to move up, it also drives the clamping frame 3 to move up. When the clamping frame 3 moves up, it will squeeze the airbag 4, thereby increasing the pressure inside the airbag 4, and when the moving seat 21 moves to the output port of the airbag 4, the gas can be blown into the moving seat 21.

[0037] The upper end of the movable box 2 is L-shaped, and the airbag 4 is installed between the upper end of the movable box 2 and the lower end of the clamp 3. A sealing plate 16 is provided inside the movable box 2 to which the output port of the airbag 4 is connected. When the movable seat 21 moves to the position of the sealing plate 16, the sealing plate 16 will be pushed up, the output port of the airbag 4 will not be blocked, and the air inside the airbag 4 can be discharged to the outside, thereby blowing into the inside of the movable seat 21.

[0038] The sealing plate 16 is provided with a guide rail 18, and a guide groove 19 is provided on a limiting frame 20 corresponding to the guide rail 18, and the guide rail 18 is slidably connected inside the corresponding guide groove 19. The connection with the guide groove 19 can be achieved by setting the guide rail 18, and the guide rail 18 can move in the guide groove 19, so that the sealing plate 16 on the guide rail 18 can move up and down.

[0039] The guide rail 18 inside the guide groove 19 is disassembled and connected with a return spring 17, which is arranged vertically in the guide groove 19. When the sealing plate 16 is pushed upward, the return spring 17 will be squeezed, and the sealing plate 16 will move downward under the drive of the return spring 17 when it is not pushed.

[0040] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0041] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of units is only for some logical functions, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0042] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A high-stability, impact-resistant hydraulic throttle valve, comprising a valve body (1), a valve stem (5) and a valve core (10), characterized in that: The valve body (1) is provided with a liquid cavity (8) inside, the liquid cavity (8) being in communication with the liquid inlet (14), a through pipe (9) being provided on the side wall of the liquid cavity (8), the through pipe (9) being in communication with the movable box (2) of the valve body (1), a movable seat (21) being movably connected inside the movable box (2), a conical filter screen (22) being detachably connected to the movable seat (21), the movable seat (21) being in communication with the through pipe (9), a storage cavity (11) being provided inside the valve body (1), a similar through pipe (9) being detachably connected to the storage cavity (11), the through pipe (9) on the storage cavity (11) being in communication with the through pipe (9), and a movable seat (21) being detachably connected to the conical filter screen (22). The position of the through pipe (9) of the liquid chamber (8) corresponds to that of the movable seat (21), the movable seat (21) is slidably connected to the inside of the movable box (2), the outside of the movable box (2) is detachably connected with an airbag (4), the airbag (4) is located on the clamping frame (3), the output port of the airbag (4) is communicated with the movable seat (21), a collecting box (7) is provided on the other side of the movable box (2) corresponding to the airbag (4), a limiting frame (20) is arranged inside the movable box (2), the limiting frames (20) are respectively vertically installed on both sides of the inner wall of the movable box (2), the limiting frames (20) are arranged in parallel with each other, and the limiting frames inside the movable box (2) A movable seat (21) is slidably connected to the positioning frame (20); the diameter of the movable seat (21) is larger than the diameter of the through pipe (9); the inner diameter of the movable seat (21) is the same as the diameter of the through pipe (9); a screw rod (15) is rotatably connected to the movable seat (21); the screw rod (15) is vertically connected to the inside of the movable box (2); one end of the screw rod (15) is located outside the movable box (2); a knob (6) is provided on the screw rod (15) outside the movable box (2); a clamping frame (3) is rotatably connected to the screw rod (15) outside the movable box (2); the clamping frame (3) is arranged in an S shape as a whole; the movable box The upper end of the movable box (2) is L-shaped, an airbag (4) is installed between the upper end of the movable box (2) and the lower end of the clamping frame (3), a sealing plate (16) is provided inside the movable box (2) connected to the output port of the airbag (4), a guide rail (18) is provided on the sealing plate (16), a guide groove (19) is provided on the limiting frame (20) corresponding to the guide rail (18), the guide rail (18) is slidably connected inside the corresponding guide groove (19), a return spring (17) is detachably connected to the guide rail (18) inside the guide groove (19), and the return spring (17) is vertically arranged in the guide groove (19).

2. A high-stability impact-resistant hydraulic throttle valve according to claim 1, characterized in that: The storage chamber (11) is detachably connected to a lower tube (12), the lower tube (12) being in communication with a liquid discharge port (13), the inner diameter of the lower tube (12) being the same as the outer diameter of the valve core (10), and the output end of the valve core (10) being conical.

3. A high-stability impact-resistant hydraulic throttle valve according to claim 1, characterized in that: The large port of the conical filter screen (22) of the movable seat (21) faces the liquid chamber (8), the small port of the conical filter screen (22) is closed, and the small port of the conical filter screen (22) faces the storage chamber (11).

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