Double-channel high-pressure stop valve

Abstract

The invention discloses a double-channel high-pressure stop valve, and particularly relates to the technical field of stop valves, the double-channel high-pressure stop valve comprises a first valve body, the two sides of the first valve body communicate with second valve bodies, the ends, away from the first valve body, of the second valve bodies are provided with high-pressure water inlets for high-pressure water to flow in, and the bottom ends of the second valve bodies communicate with high-pressure water inlets for high-pressure water to flow out; the number of the second valve bodies is two, each second valve body comprises a valve body a and a valve body b, the interior of the valve body b communicates with the interior of the valve body a, and a piston assembly used for blocking the high-pressure water inlet is arranged in the valve body a. Two fluid flowing channels are arranged on the two sides of the control valve body, two high-pressure water flows can be controlled to flow at the same time, the cost is reduced, three different use modes are provided for the valve, the functions of the valve are further enriched, the valve can be flexibly switched between the single / double-channel two modes, and the valve is suitable for popularization and application. The method is suitable for different use scenes, and the use range is expanded.

Description

Technical Field

[0001] The present invention relates to the technical field of cut-off valves, and more specifically to a dual-channel high-pressure cut-off valve. Background Art

[0002] A high-pressure cut-off valve is a valve commonly used to control the on-off of fluids in a high-pressure environment. The control of high-pressure water flow in a ship rust removal robot is also achieved by a high-pressure cut-off valve. It is known that a ship rust removal robot is an automated device mainly used for rust removal on the surfaces of large steel structures such as ships. It mainly uses a high-pressure water pump to increase the pressure of ordinary water to 40 - 280 mpa to form a super-high-pressure water jet, and uses the powerful impact force, erosion force, and peeling ability of the water jet to quickly remove coatings, scale, rust, and paint. It can be seen that the high-pressure cut-off valve mainly operates in various high-pressure environments. The valve body material is commonly made of cast steel, stainless steel (such as 304, 316, 316L), etc. The sealing ring and O-ring can be made of polytetrafluoroethylene, nitrile rubber, etc. to ensure that the valve body can meet the pressure requirements and sealing requirements in the high-pressure working environment, as shown in the prior art publication numbers CN113639054A, CN103672066B, and CN102575779A.

[0003] Often, there is more than one high-pressure water path in a ship rust removal robot. Existing such cut-off valves are only provided with one fluid flow passage, which leads to the need to install two sets of the same cut-off valves when dealing with two high-pressure water paths. The setting of the two sets of cut-off valves will directly cause a significant increase in the manufacturing cost and use cost of the ship rust removal robot, affecting its practicability. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a dual-channel high-pressure cut-off valve. By providing two fluid flow passages on both sides of the control valve body, it can be used to control the flow of two high-pressure water flows simultaneously, reducing costs. It can also be flexibly switched between single-channel and dual-channel modes, further enriching the functions of the present invention and improving practicability to solve the problems arising in the above background art.

[0005] To achieve the above object, the present invention provides the following technical solution: A dual-channel high-pressure cut-off valve includes a first valve body. Both sides of the first valve body are communicated with a second valve body. One end of the second valve body away from the first valve body is provided with a high-pressure water inlet for high-pressure water to flow in, and the bottom end of the second valve body is communicated with a high-pressure water outlet for high-pressure water to flow out.

[0006] There are two second valve bodies in total. Each second valve body includes a valve body a and a valve body b. The inside of the valve body b is communicated with the inside of the valve body a. A piston assembly for blocking the high-pressure water inlet is provided inside the valve body a.

[0007] One end of the first valve body is provided with a hydraulic oil inlet for allowing hydraulic oil to enter. The hydraulic oil is input into the first valve body by a hydraulic pump. The hydraulic oil enters the first valve body through the hydraulic oil inlet and pushes the piston assembly to move to one side to block the high-pressure water inlet, so as to cut off the flow of high-pressure water in the valve body b.

[0008] In a preferred embodiment, the first valve body includes a control valve body. Two through holes are provided on both sides of the control valve body and are distributed up and down. The hydraulic oil sequentially enters the inside of the valve body a through the hydraulic oil inlet and the through holes.

[0009] The inner top end of the control valve body is movably connected with a rotating shaft through a sealed bearing. Two groups of through hole blocking rods are provided at the outer end of the rotating shaft. The number of each group of through hole blocking rods is three. The three through hole blocking rods are distributed in a T shape on the outer wall of the rotating shaft. A driving mechanism for driving the rotating shaft to rotate is provided at the top of the control valve body. By controlling the rotation of the two groups of through hole blocking rods by the driving mechanism, the through holes on both side walls of the control valve body are blocked to control the on-off of the high-pressure water in the two valve bodies b.

[0010] In a preferred embodiment, the driving mechanism includes a turntable. Eight grooves are provided on the inner wall of the turntable. Two ratchets are engaged in the turntable. One end of the ratchet is provided with a protrusion, which is adapted to the groove. Each rotation of the ratchet drives the turntable to rotate 45°.

[0011] The rotation directions of the two ratchets are opposite. Two motors for driving the two ratchets to rotate respectively are provided at the top of the turntable.

[0012] In a preferred embodiment, a protective shell is fixed at the top of the control valve body. The motor is fixed to the inner wall of the protective shell through a bracket. The output shaft at the bottom of the motor penetrates through the ratchet to drive the ratchet to rotate.

[0013] In a preferred embodiment, a backing plate is provided at the bottom of the turntable. The backing plate is fixed at the inner bottom end of the protective shell. The rotating shaft penetrates through the backing plate. The provided backing plate is used to support the turntable from the bottom.

[0014] In a preferred embodiment, each through hole blocking rod includes a cross bar fixed to the outer wall of the rotating shaft. A hollow rod is inserted at the outer end of the cross bar. One end inside the hollow rod is fixed with a spring a. One end of the spring a is fixed to the end face of the cross bar. A plug in contact with the inner wall of the control valve body is fixed at the end of the hollow rod away from the cross bar. When the cross bar rotates to the position of the through hole, the end of the plug extends into the through hole to block the through hole.

[0015] In a preferred embodiment, a reduced-diameter through hole communicating with the high-pressure water inlet is provided at one end of the valve body b.

[0016] The piston assembly includes a first piston. One end of the first piston is fixed with a piston rod, and the other end of the first piston is fixed with a second piston. One end of the second piston away from the first piston is fixed with a third piston that fits the inner cavity shape of the variable-diameter through hole. The hydraulic oil entering the inside of valve body a pushes the third piston into the variable-diameter through hole to prevent the high-pressure water from entering valve body b through the high-pressure water inlet.

[0017] In a preferred embodiment, a spring b is provided at the outer end of the first piston. One end of the spring b is fixed to the inner wall of valve body a, and the other end of the spring b is fixed to the side wall of the piston rod. When the hydraulic oil pressure inside the control valve body decreases, the compressed spring b pushes the piston rod to reset, which is used to pull out the third piston from the variable-diameter through hole to allow the high-pressure water to enter the inside of valve body b through the high-pressure water inlet and then flow out through the high-pressure water outlet.

[0018] Technical effects and advantages of the present invention:

[0019] 1. In view of the fact that the existing high-pressure cut-off valve has only one fluid flow passage, the present invention provides two fluid flow passages on both sides of the control valve body, which can be used to control the flow of two high-pressure water streams simultaneously, reducing costs and improving practicability.

[0020] 2. By providing three through-hole plug rods to block the through holes on both sides of the inner wall of the control valve body, the present invention provides three different usage modes, further enriching the functions of the invention, enabling the present invention to flexibly switch between single / double-channel modes to adapt to different usage scenarios and expanding the scope of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is the first view of the overall structure of the present invention;

[0022] Figure 2 is the second view of the overall structure of the present invention;

[0023] Figure 3 is the exploded view of the present invention;

[0024] Figure 4 is the cross-sectional view of valve body 1 and valve body 2 of the present invention;

[0025] Figure 5 is the exploded view of the drive mechanism of the present invention;

[0026] Figure 6 is the schematic diagram of the initial position of the through-hole plug rod of the present invention;

[0027] Figure 7 is the schematic diagram of the through-hole plug rod blocking the left through hole on the inner wall of the control valve body of the present invention;

[0028] Figure 8Schematic diagram of the through-hole plugging rod of the present invention plugging the through-hole on the right side of the inner wall of the control valve body;

[0029] Figure 9 Schematic diagram of the through-hole plugging rod of the present invention plugging the through-holes on both sides of the inner wall of the control valve body.

[0030] Reference numerals are:

[0031] 1. Valve body one; 11. Control valve body; 12. Through-hole; 13. Rotating shaft; 14. Through-hole plugging rod; 141. Cross bar; 142. Hollow rod; 143. Spring a; 144. Plug; 15. Protective shell; 16. Driving mechanism; 161. Turntable; 162. Groove; 163. Ratchet; 164. Motor; 165. Base plate;

[0032] 2. Valve body two; 21. Valve body a; 22. Piston assembly; 221. Piston one; 222. Piston rod; 223. Piston two; 224. Piston three; 23. Spring b; 24. Valve body b; 25. Variable-diameter through-hole;

[0033] 3. High-pressure water inlet;

[0034] 4. High-pressure water outlet;

[0035] 5. Hydraulic oil inlet. Detailed implementation manners

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0037] Embodiment 1

[0038] Refer to the attached drawings of the specification Figure 1 、 Figure 2 and Figure 3, the present invention provides a dual-channel high-pressure cut-off valve, which includes a first valve body 1. Both sides of the first valve body 1 are communicated with second valve bodies 2. One end of the second valve body 2 far from the first valve body 1 is provided with a high-pressure water inlet 3 for high-pressure water to flow in. The bottom end of the second valve body 2 is communicated with a high-pressure water outlet 4 for high-pressure water to flow out. In actual application, the present invention is often used on ship rust-removing robots. A ship rust-removing robot is an automated device mainly used for rust removal on the surfaces of large steel structures such as ships. The rust removal principle is mainly that a high-pressure water pump increases the pressure of ordinary water to 40 - 280 mpa, and the single-gun flow rate is about 20 - 43 l / min. It is ejected from the nozzle to form an ultra-high-pressure water jet. By using the strong impact force, erosion force and peeling ability of the water jet, the coating, scale, rust and paint can be quickly removed completely. The application of the present invention on the ship rust-removing robot is mainly to control the on-off of the high-pressure water flow in the nozzle.

[0039] In the traditional technology, if it is necessary to control the high-pressure water flow in two nozzles of a ship rust-removing robot, two independent cut-off valves need to be equipped. This method has a high cost. In view of this, the present invention sets the second valve body 2 into two. Each second valve body 2 includes a valve body a21 and a valve body b24. The inside of the valve body b24 is communicated with the inside of the valve body a21. The high-pressure water inlet 3 is communicated with the inside of the valve body b24. A piston assembly 22 for blocking the high-pressure water inlet 3 is provided inside the valve body a21;

[0040] As Figure 4 shown, a reduced-diameter through hole 25 communicated with the high-pressure water inlet 3 is opened at one end of the valve body b24; the piston assembly 22 includes a first piston 221. A piston rod 222 is fixed to one end of the first piston 221. A second piston 223 is fixed to the other end of the first piston 221. A third piston 224 that fits the inner cavity shape of the reduced-diameter through hole 25 is fixed to the end of the second piston 223 far from the first piston 221. The hydraulic oil entering the inside of the valve body a21 pushes the third piston 224 to insert into the reduced-diameter through hole 25 to prevent high-pressure water from entering the valve body b24 through the high-pressure water inlet 3;

[0041] Moreover, the valve body 1 includes a control valve body 11, and two through holes 12 distributed up and down are provided on both sides of the control valve body 11. The hydraulic oil enters the valve body a21 through the hydraulic oil inlet 5 and the through hole 12 in turn. A hydraulic oil inlet 5 for the hydraulic oil to enter is provided at the bottom of the valve body 1. The hydraulic oil is pumped into the control valve body 11 by a hydraulic pump. After the hydraulic oil enters the valve body b24 through the through hole 12, it pushes the piston rod 222, piston 1 221, piston 223 and piston 3 224 to move toward the high-pressure water inlet 3 until 2524 is inserted into the variable diameter through hole 25 to achieve the effect of blocking the high-pressure water inlet 3. After the high-pressure water inlet 3 is blocked, the high-pressure water cannot enter the valve body b24, so that the flow of high-pressure water in the valve body b24 can be cut off. At this time, the high-pressure water is statically pressurized.

[0042] After the hydraulic pump stops working, the pressure inside the control valve body 11 decreases, so that the piston assembly 22 can be reset. Figure 4 As shown, a spring b23 is provided at the outer end of the piston 1 221, one end of the spring b23 is fixed to the inner wall of the valve body a21, and the other end of the spring b23 is fixed to the side wall of the piston rod 222. When the hydraulic oil pressure inside the control valve body 11 is reduced, the compressed spring b23 will push the piston rod 222 to move toward the valve body 1 and reset, and pull the piston 3 224 out of the variable diameter through hole 25. At this time, high-pressure water is allowed to enter the valve body b24 through the high-pressure water inlet 3 and then flow out through the high-pressure water outlet 4.

[0043] The present invention utilizes a hydraulic pump to pump hydraulic oil into the control valve body 11 to simultaneously control the on-off of two high-pressure water passages. Compared with the prior art method of using two cut-off valves to control two high-pressure water passages, the present invention can greatly reduce the control cost of high-pressure water. In addition, the present invention has a simple structural design and low manufacturing cost, and has a higher promotion value.

[0044] It is worth noting that the spring b23 in the present invention is located between the piston rod 222 and the second piston 223, which can avoid contact with the hydraulic oil on one side of the piston rod 222 and the water flow on one side of the second piston 223, thereby preventing oxidation and rusting, and ensuring that the service life of the spring b23 is not affected by rust. In addition, the control valve body 11, the valve body a21 and the valve body b24 in the present invention are all detachably connected through flanges. This design can replace the damaged parts of the structure during use alone, which can ensure the sealing effect of the connection on the one hand, and on the other hand, it can also ensure the sealing of one end of the piston rod 222 and one end of the second piston 223, so as to prevent water and oil from contacting the spring b23 and extend the service life of the spring b23 as much as possible.

[0045] Embodiment 2

[0046] As shown in Figure 4 and Figure 5 shown, inside the top end of the control valve body 11 of the present invention, a rotating shaft 13 is movably connected through a sealing bearing. At the outer end of the rotating shaft 13, there are two sets of through-hole blocking rods 14 distributed up and down. The number of each set of through-hole blocking rods 14 is three, and the three through-hole blocking rods 14 are distributed in a T shape on the outer wall of the rotating shaft 13. At the top of the control valve body 11, there is a driving mechanism 16 for driving the rotation of the rotating shaft 13. By controlling the rotation of the two sets of through-hole blocking rods 14 through the driving mechanism 16, the through-holes 12 on both side walls of the control valve body 11 are blocked to control the on-off of the high-pressure water in the two valve bodies b24;

[0047] The initial positions of the three through-hole blocking rods 14 are as shown in Figure 6 shown: None of the three through-hole blocking rods 14 block the through-hole 12. Each through-hole blocking rod 14 includes a cross bar 141 fixed to the outer wall of the rotating shaft 13. A hollow rod 142 is inserted at the outer end of the cross bar 141. At one end inside the hollow rod 142, a spring a143 is fixed. One end of the spring a143 is fixed to the end face of the cross bar 141. At the end of the hollow rod 142 away from the cross bar 141, a plug 144 in contact with the inner wall of the control valve body 11 is fixed. When the cross bar 141 rotates to the position of the through-hole 12, the end of the plug 144 extends into the through-hole 12 to block the through-hole 12.

[0048] It should be noted that when the plug 144 contacts the inner wall of the control valve body 11, the hollow rod 142 will squeeze the spring a143, causing the hollow rod 142 to contract along the outer wall of the cross bar 141 to shorten the distance between the plug 144 and the rotating shaft 13; when the plug 144 rotates to the position where the through-hole 12 is located, the compressed spring a143 will push the hollow rod 142 and the plug 144 towards the through-hole 12 until the end of the plug 144 is clamped into the through-hole 12 to block the through-hole 12. At the same time, the elastic force of the spring a143 itself can also apply a thrust to the plug 144 towards the through-hole 12 to further improve the blocking effect of the plug 144 on the through-hole 12.

[0049] Among them, the specific structure of the driving mechanism 16 for driving the rotation of the rotating shaft 13 is as shown in Figure 5 shown: It includes a turntable 161. At the bottom of the turntable 161, there is a backing plate 165. The backing plate 165 is fixed to the bottom end inside the protective shell 15. The top end of the rotating shaft 13 passes through the backing plate 165 and is fixed to the bottom of the turntable 161. Eight grooves 162 are opened on the inner wall of the turntable 161. Two ratchets 163 are meshed inside the turntable 161. One end of each ratchet 163 has a protrusion, and this protrusion is adapted to the groove 162. The initial positions of the two ratchets 163 are as shown in Figure 5Shown: The protrusion of a ratchet 163 is stuck inside the groove 162, and one side of the other ratchet 163 without a protrusion is in contact with the inner wall of the turntable 161. Since the number of grooves 162 is set to eight, each rotation of the ratchet 163 drives the turntable 161 to rotate 45°.

[0050] The rotation directions of the two ratchets 163 are opposite. There are two motors 164 on the top of the turntable 161 that drive the two ratchets 163 to rotate respectively. One motor 164 controls the ratchet 163 to rotate clockwise, and the other motor 164 controls the other ratchet 163 to rotate counterclockwise. A protective shell 15 is fixed on the top of the control valve body 11. The motor 164 is fixed to the inner wall of the protective shell 15 through a bracket. The output shaft at the bottom of the motor 164 passes through the ratchet 163 to drive the ratchet 163 to rotate. The motor 164 is a stepper motor, and the working principle of the stepper motor is based on the law of electromagnetic induction. When the stator winding receives an electrical pulse signal, a magnetic field is generated. The magnetic field interacts with the permanent magnet of the rotor, causing the rotor to rotate. The rotation angle of the rotor is proportional to the number of electrical pulse signals. Therefore, the position and speed of the rotor can be precisely controlled by controlling the number and frequency of the electrical pulse signals. In the present invention, it is set that the motor 164 pauses once every rotation. In this way, the turntable 161 can be controlled by the motor 164 to rotate 45° and then pause once. Then, through an external controller, the rotation angle of the turntable 161 can be controlled, that is, the rotation angles of the three through-hole plug rods 14 can be controlled.

[0051] Based on the above structure, the present invention also provides three usage modes as follows:

[0052] ①: Synchronous control mode for high-pressure water circuits on both sides

[0053] When the three through-hole plug rods 14 are in the position as Figure 6 shown, the through-holes 12 on both sides of the control valve body 11 are not blocked by the through-hole plug rods 14. At this time, the hydraulic pump can pump hydraulic oil into the control valve body 11 through the hydraulic oil inlet 5, and then the hydraulic oil enters the valve body a21 along the Figure 6 arrow shown in the figure, pushing the piston assembly 22 to block the variable-diameter through-hole 25 and the high-pressure water inlet 3 to block the high-pressure water circuits on both sides simultaneously.

[0054] By controlling one of the motors 164 through the controller to drive the ratchet 163 to rotate counterclockwise, one rotation of this ratchet 163 drives the turntable 161 to rotate counterclockwise by 45°. The rotating turntable 161 can synchronously drive the rotating shaft 13 and the through-hole plug rods 14 to rotate counterclockwise, and rotate the through-hole plug rods 14 from the initial position to the position as Figure 9The positions shown, at this time the through holes 12 on both sides of the control valve body 11 are blocked by the through hole blocking rods 14, and the hydraulic oil inside the control valve body 11 cannot enter the valve body a21 through the through holes 12, as Figure 9 shown by the arrows in the figure: At this time, the high-pressure water on both sides can respectively enter the two valve bodies b24 through the high-pressure water inlets 3 on both sides, and then flow out through the high-pressure water outlets 4. That is: At this time, both high-pressure water paths are in a connected state.

[0055] ②: The left water path is always open, and the right water path is controlled separately

[0056] Different from ①, in this mode, it is necessary to drive another motor 164 through the controller to control the ratchet wheel 163 to rotate clockwise, and control its rotation by 45°, and rotate the through hole blocking rod 14 from the initial position to as shown in Figure 7 the position shown. At this time, the through hole blocking rod 14 blocks the through hole 12 on the left inner wall of the control valve body 11, and the hydraulic oil inside the control valve body 11 cannot enter the left valve body a21 through the through hole 12. At this time, the high-pressure water on the left can smoothly enter the left valve body b24 through the high-pressure water inlet 3, and then flow out through the high-pressure water outlet 4 at the bottom of the valve body b24.

[0057] In this mode, the through hole 12 on the right side inside the control valve body 11 is not blocked, so the on-off of the right high-pressure water path can still be controlled separately by pumping hydraulic oil into the control valve body 11. It is also possible to pump hydraulic oil into the control valve body 11 so that the hydraulic oil can push the piston assembly 22 to block the variable-diameter through hole 25 as shown by the arrow in Figure 7 . At this time, only the left high-pressure water path can be reserved for separate use.

[0058] ③: The right water path is always open, and the left water path is controlled separately

[0059] Different from ②, it is necessary to control the motor 164 through the controller to drive the ratchet wheel 163 rotating counterclockwise to rotate by 135°, and rotate the through hole blocking rod 14 from the initial position to as shown in Figure 8 the position shown, and use the through hole blocking rod 14 to block the through hole 12 on the right inner wall of the control valve body 11.

[0060] In this mode, the through hole 12 on the left side inside the control valve body 11 is not blocked, so the on-off of the left high-pressure water path can still be controlled separately by pumping hydraulic oil into the control valve body 11. It is also possible to pump hydraulic oil into the control valve body 11 so that the hydraulic oil can push the piston assembly 22 to block the variable-diameter through hole 25 as shown by the arrow in Figure 8 . At this time, only the right high-pressure water path can be reserved for separate use.

[0061] By providing the above three usage modes, the present invention can be flexibly switched between single / double channels to meet the usage requirements of different usage scenarios, further improving the practicality of the present invention and enriching the functionality of the present invention.

[0062] Finally, the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A dual-channel high-pressure cut-off valve, characterized in that: The valve body comprises a valve body 1 (1), both sides of the valve body 1 (1) are connected to a valve body 2 (2), an end of the valve body 2 (2) away from the valve body 1 (1) is provided with a high-pressure water inlet (3) for high-pressure water to flow in, and the bottom end of the valve body 2 (2) is connected to a high-pressure water outlet (4) for high-pressure water to flow out; There are two valve bodies 2 (2) in total, each valve body 2 (2) comprises a valve body a (21) and a valve body b (24), the interior of the valve body b (24) is communicated with the interior of the valve body a (21), and the interior of the valve body a (21) is provided with a piston assembly (22) for blocking the high-pressure water inlet (3); The bottom end of the valve body 1 (1) is provided with a hydraulic oil inlet (5) for the hydraulic oil to enter. The hydraulic oil enters the interior of the valve body 1 (1) through the hydraulic oil inlet (5) and pushes the piston assembly (22) to move to one side to block the high-pressure water inlet (3), thereby cutting off the flow of high-pressure water in the valve body b (24).

2. A dual-channel high-pressure cut-off valve according to claim 1, characterized in that: The valve body a (1) comprises a control valve body (11), and two through holes (12) distributed vertically are provided on both sides of the control valve body (11), and the hydraulic oil enters the interior of the valve body a (21) through the hydraulic oil inlet (5) and the through holes (12) in sequence; The top end of the control valve body (11) is movably connected to a rotating shaft (13) via a sealing bearing. The outer end of the rotating shaft (13) is provided with two groups of through-hole blocking rods (14) distributed up and down. Each group of through-hole blocking rods (14) is provided with three through-hole blocking rods (14). The three through-hole blocking rods (14) are distributed in a T-shape on the outer wall of the rotating shaft (13). The top of the control valve body (11) is provided with a driving mechanism (16) for driving the rotating shaft (13) to rotate. The two groups of through-hole blocking rods (14) are controlled by the driving mechanism (16) to rotate so as to block the through holes (12) on the two side walls of the control valve body (11) so as to control the on and off of high-pressure water in the two valve bodies b (24).

3. A dual-channel high-pressure cut-off valve according to claim 2, characterized in that: The driving mechanism (16) comprises a rotating disk (161), the inner wall of which is provided with eight grooves (162), two ratchets (163) meshing inside the rotating disk (161), one end of the ratchets (163) being provided with a protrusion, and the protrusion being matched with the groove (162), and each rotation of the ratchets (163) drives the rotating disk (161) to rotate 45°; The two ratchet wheels (163) rotate in opposite directions, and two motors (164) are provided on the top of the rotating disk (161) for respectively driving the two ratchet wheels (163) to rotate.

4. A dual-channel high-pressure cut-off valve according to claim 3, characterized in that: A protective shell (15) is fixed on the top of the control valve body (11), and the motor (164) is fixed to the inner wall of the protective shell (15) via a bracket.

5. A dual-channel high-pressure cut-off valve according to claim 4, characterized in that: A pad (165) is provided at the bottom of the rotating disk (161), the pad (165) is fixed to the bottom end inside the protective shell (15), and the rotating shaft (13) passes through the pad (165).

6. A dual-channel high-pressure cut-off valve according to claim 2, characterized in that: Each through-hole blocking rod (14) comprises a cross bar (141) fixed to the outer wall of the rotating shaft (13); a hollow rod (142) is inserted into the outer end of the cross bar (141); a spring a (143) is fixed to one end of the hollow rod (142); one end of the spring a (143) is fixed to the end face of the cross bar (141); a plug (144) in contact with the inner wall of the control valve body (11) is fixed to one end of the hollow rod (142) away from the cross bar (141); when the cross bar (141) is rotated to the through-hole (12) position, the end of the plug (144) extends into the through-hole (12) to block the through-hole (12).

7. A dual-channel high-pressure cut-off valve according to claim 2, characterized in that: One end of the valve body b (24) is provided with a variable diameter through hole (25) connected to the high-pressure water inlet (3); The piston assembly (22) comprises a piston 1 (221), a piston rod (222) being fixed at one end of the piston 1 (221), a piston 2 (223) being fixed at the other end of the piston 1 (221), and a piston 3 (224) being fixed at the end of the piston 2 (223) away from the piston 1 (221) and matching the shape of the inner cavity of the variable diameter through hole (25). The hydraulic oil entering the interior of the valve body a (21) pushes the piston 3 (224) to be inserted into the interior of the variable diameter through hole (25), so as to prevent high-pressure water from entering the valve body b (24) through the high-pressure water inlet (3).

8. A dual-channel high-pressure cut-off valve according to claim 7, characterized in that: A spring b (23) is provided at the outer end of the piston one (221), one end of the spring b (23) is fixed to the inner wall of the valve body a (21), and the other end of the spring b (23) is fixed to the side wall of the piston rod (222). When the hydraulic oil pressure inside the control valve body (11) decreases, the compressed spring b (23) pushes the piston rod (222) to reset, so as to pull the piston three (224) out of the variable diameter through hole (25), so as to allow high-pressure water to enter the valve body b (24) through the high-pressure water inlet (3) and then flow out through the high-pressure water outlet (4).

Images