Hydraulic regulating valve group

Abstract

The utility model relates to the technical field of regulating valves, in particular to a hydraulic regulating valve group, which reduces the opening and closing difficulty of a hydraulic valve by regulating the pressure balance at the upper end and the lower end of a piston, and is good in practicability. Comprising a valve body, fixing cylinders, pistons and push rods. The right pressure regulating pipe is communicated with the valve body and the upper end of the right side of the fixing cylinder, the left pressure regulating pipe is communicated with the valve body and the upper end of the left side of the fixing cylinder, the groove disc is rotationally installed at the top end of the interior of the fixing cylinder, and the output end of the right pressure regulating pipe and the output end of the left pressure regulating pipe extend into two arc-shaped grooves of the groove disc respectively; the sealing ring is installed in the fixing cylinder, the sealing ring is in sliding sealing contact with the lower end face of the groove disc, the sealing ring is provided with a vertically-through third through hole, the third through hole is located between the first through hole and the second through hole, and the first through hole, the second through hole and the third through hole are located on the circumference with the axis of the groove disc as the circle center.

Description

Technical Field

[0001] The utility model relates to the technical field of regulating valves, in particular to a hydraulic regulating valve group. Background Art

[0002] In hydraulic equipment, hydraulic valves are often used to adjust the pressure in hydraulic devices. The Chinese utility model patent with the prior art publication number CN217462702U proposes a hydraulic regulating valve assembly, which, when in use, is provided with a valve stem, a fixed cylinder, a slide groove, a limit plate, a slider, a rotating rod, a cross plate, a plug, a pressing handle and a spring, and the pressing handle is pressed downward to drive the valve core body to move downward, and adjust the distance between the valve core body and the valve core groove to adjust the pressure inside the hydraulic device. The rotating rod is rotated under the action of the spring to drive the plug on the top of the cross plate to plug into the slot at the bottom of the fixed plate to fix the position of the valve core body, thereby avoiding rust and thread slippage, so as to facilitate the normal use of the regulating valve.

[0003] However, when the component is in use, the pressure of the hydraulic oil in the delivery pipe is relatively high, and the pressure of the hydraulic oil on the valve core body is relatively high, resulting in greater resistance when the valve core body moves toward the valve core groove, making the closing process of the hydraulic valve more difficult. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a hydraulic regulating valve group with good practicality, which can reduce the difficulty of opening and closing the hydraulic valve by adjusting the pressure balance between the upper and lower ends of the piston.

[0005] The utility model discloses a hydraulic regulating valve group, comprising a valve body, a fixed cylinder, a piston and a push rod, wherein the fixed cylinder is mounted on the valve body, the fixed cylinder is communicated with the valve body, the piston is slidably mounted inside the fixed cylinder, the lower end of the push rod is connected with the piston, and the push rod extends out of the upper part of the fixed cylinder; the utility model also comprises a right pressure regulating pipe, a left pressure regulating pipe, a groove plate and a sealing ring, the input end of the right pressure regulating pipe is communicated with the input end of the valve body, the output end of the right pressure regulating pipe extends into the upper right end of the fixed cylinder, the input end of the left pressure regulating pipe is communicated with the output end of the valve body, and the output end of the left pressure regulating pipe extends into the inner part of the fixed cylinder At the upper left end of the part, the slot disk is rotatably mounted on the inner top of the fixed cylinder, the slot disk is slidably and sealedly connected to the inner wall of the fixed cylinder, a left arc groove and a right arc groove are respectively arranged on the left and right sides of the slot disk, the ends of the two arc grooves are respectively and oppositely arranged with a through hole 1 and a through hole 2 which are connected downwards, the output end of the right pressure regulating tube and the output end of the left pressure regulating tube are respectively extended into the two arc grooves of the slot disk, the sealing ring is installed in the fixed cylinder, the sealing ring is in sliding and sealing contact with the lower end surface of the slot disk, the sealing ring is arranged with a through hole 3 which is passed through from top to bottom, the through hole 3 is located between the through hole 1 and the through hole 2, so The through holes 1, 2 and 3 are located on a circle with the axis of the grooved plate as the center. When the piston needs to be lowered into the valve body to reduce the flow of hydraulic oil in the valve body, the grooved plate is rotated so that the through hole 2 of the right arc groove connected with the right pressure regulating pipe is connected with the through hole 3 of the sealing ring, so that the high-pressure hydraulic oil in the input end of the valve body is input into the right arc groove of the grooved plate through the right pressure regulating pipe and enters the space between the piston and the grooved plate inside the fixed cylinder through the through holes 2 and 3, so that the pressure at both ends of the piston is balanced. At this time, the piston can be operated to move downward more easily through the push rod. When the cam is in the air, it closes the valve body; when the cam is in the air, it closes the valve body and the piston is retracted into the fixed cylinder. When the valve body is opened, the groove disk is rotated in the opposite direction so that the through hole 1 of the left arc groove connected with the right pressure regulating pipe is connected with the through hole 3 of the sealing ring, so that the higher-pressure hydraulic oil in the space between the piston and the groove disk inside the fixed cylinder enters the left arc groove of the groove disk through the through hole 3 and the through hole 1 and is discharged into the output end of the valve body through the left pressure regulating pipe, so that the pressure on the upper end of the piston is reduced. At this time, the piston can be easily raised by the push rod to open the valve body, thereby reducing the difficulty of opening and closing the hydraulic valve and having good practicality.

[0006] Preferably, it also includes a shaft tube, a sealing ring and a clamping block. The shaft tube is sleeved on the outer wall of the push rod, the middle part of the shaft tube is rotatably connected to the top of the fixed cylinder, the lower part of the left pressure regulating tube passes concentrically through the groove disk, a wear-resistant sealing ring is arranged between the shaft tube and the fixed cylinder, a wear-resistant sealing ring is arranged between the push rod and the shaft tube, a sealing ring is arranged between the shaft tube and the groove disk, a plurality of clamping blocks are arranged on the outer wall of the shaft tube, and the groove disk is provided with grooves matching the plurality of blocks, and the shaft tube is matched with the plurality of grooves of the groove disk through the plurality of blocks; the push rod can rotate inside the shaft tube, and the sealing of the push rod and the shaft tube is improved by the wear-resistant sealing ring. When the shaft tube is rotated, the groove disk is driven to rotate by the plurality of clamping blocks, and the sealing between the groove disk and the shaft tube is improved by arranging the sealing ring, which has good practicality.

[0007] Preferably, it also includes a pointer and two limit blocks, the pointer is mounted on the upper outer wall of the shaft tube, the two limit blocks are mounted on the upper end surface of the fixed cylinder, the two limit blocks are relatively arranged on the left and right sides of the pointer, and the two limit blocks position the rotation angle of the pointer; when the shaft tube drives the slot disk to rotate, the pointer is in limit contact with the limit block on the left, at which time the through hole two of the right arc-shaped slot is aligned and connected with the through hole three of the sealing ring; the pointer is in limit contact with the limit block on the left, at which time the through hole one of the left arc-shaped slot is aligned and connected with the through hole three of the sealing ring, thereby improving the conversion accuracy of the slot disk.

[0008] Preferably, it also includes a motor, gear one, a lever, an impeller and gear two, the motor is installed on the fixed cylinder, the gear is installed on the output shaft of the motor in a concentric rotation, a plurality of levers are arranged on the end face circumference of gear one, the impeller is installed on the output shaft of the motor, a plurality of spring sheets are arranged on the impeller, the ends of the plurality of spring sheets are respectively aligned and contacted with the plurality of levers, gear two is concentrically installed on the upper outer wall of the shaft tube, gear two is meshed with gear one; the output shaft of the motor drives the impeller to rotate, the plurality of spring sheets of the impeller shift the plurality of levers to drive gear one to rotate, so that the meshing of gear one drives the rotation of gear two, and the gear two drives the shaft tube to rotate, when the shaft tube drives the slot disk to reach the limit, the plurality of spring sheets of the impeller bend and disengage from the plurality of levers, and gear one stops rotating, thereby realizing automatic adjustment of the slot disk angle, which has good practicality.

[0009] Preferably, it also includes a threaded plate and a screw rod 1, the threaded plate is installed on the upper end of the push rod, the upper part of the screw rod 1 is threadedly connected to the threaded plate, and the lower end of the screw rod 1 is coaxially connected to the output shaft of the motor; the output shaft of the motor drives the screw rod 1 to rotate, and the threaded action of the screw rod 1 and the threaded plate drives the threaded plate to rise and fall, and the threaded plate drives the push rod and the piston to rise and fall, thereby realizing automatic lifting and lowering adjustment of the piston.

[0010] Preferably, it also includes screw 2, a driving wheel, a driven wheel and a transmission belt. The upper end of screw 2 is rotatably threaded with the threaded plate, the lower end of screw 2 is rotatably connected to the fixed cylinder, the driving wheel is concentrically installed on screw 1, the driven wheel is concentrically installed on screw 2, and the transmission belt is sleeved on the driving wheel and the driven wheel; when the output shaft of the motor drives screw 1 to rotate, it drives the driving wheel to rotate, and the driving wheel drives the driven wheel and screw 2 to rotate through the transmission belt, and screw 2 and screw 1 rotate synchronously, and rise and fall under the action of the threads of the threaded plate and screws 1 and 2, thereby improving the stability of the lifting and lowering of the threaded plate and the push rod.

[0011] Compared with the prior art, the utility model has the following beneficial effects: when the piston needs to be lowered into the valve body to reduce the flow rate of the hydraulic oil in the valve body, the groove plate is rotated so that the through hole 2 of the right arc groove connected with the right pressure regulating pipe is connected with the through hole 3 of the sealing ring, so that the high-pressure hydraulic oil in the input end of the valve body is input into the right arc groove of the groove plate through the right pressure regulating pipe and enters the space between the piston and the groove plate inside the fixed cylinder through the through holes 2 and 3, so that the pressure at both ends of the piston is balanced. At this time, the piston can be easily operated to lower the valve body through the push rod. Close; the piston needs to be retracted into the fixed cylinder. When the valve body is opened, the groove plate is rotated in the opposite direction so that the through hole 1 of the left arc groove connected with the right pressure regulating pipe is connected with the through hole 3 of the sealing ring, so that the higher-pressure hydraulic oil in the space between the piston and the groove plate inside the fixed cylinder enters the left arc groove of the groove plate through the through hole 3 and the through hole 1 and is discharged into the output end of the valve body through the left pressure regulating pipe, so that the pressure on the upper end of the piston is reduced. At this time, the piston can be easily raised by the push rod to open the valve body, thereby reducing the difficulty of opening and closing the hydraulic valve, and having good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 It is a schematic diagram of the axonometric partial cross-sectional structure of the utility model;

[0014] Figure 3 It is a schematic diagram of the axonometric structure of the utility model;

[0015] Figure 4 It is a structural schematic diagram of the groove plate, sealing ring, shaft tube, sealing ring, clamp block and pointer;

[0016] Figure 5 It is a schematic diagram of the exploded structure of the groove plate, sealing ring, shaft tube and sealing ring;

[0017] Figure 6 It is a schematic diagram of the structure of a piston, a push rod, a motor, a threaded plate, a screw rod 1, a screw rod 2, a driving wheel and a driven wheel.

[0018] Markings in the attached figure: 1. valve body; 2. fixed cylinder; 3. piston; 4. push rod; 5. right pressure regulating tube; 6. left pressure regulating tube; 7. groove plate; 8. sealing ring; 9. shaft tube; 10. sealing ring; 11. block; 12. pointer; 13. limit block; 14. motor; 15. gear 1; 16. lever; 17. impeller; 18. gear 2; 19. threaded plate; 20. screw 1; 21. screw 2; 22. driving wheel; 23. driven wheel; 24. transmission belt. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of the present invention, the present invention is comprehensively described below with reference to the relevant drawings.

[0020] Embodiment 1

[0021] like Figures 1 to 3 As shown, on the basis of Example 2, a hydraulic regulating valve group includes a valve body 1, a fixed cylinder 2, a piston 3 and a push rod 4, the fixed cylinder 2 is installed on the valve body 1, the fixed cylinder 2 is connected to the valve body 1, the piston 3 is slidably installed in the interior of the fixed cylinder 2, the lower end of the push rod 4 is connected to the piston 3, and the push rod 4 extends out of the upper outside of the fixed cylinder 2; it also includes a right pressure regulating pipe 5, a left pressure regulating pipe 6, a groove plate 7 and a sealing ring 8, the input end of the right pressure regulating pipe 5 is connected to the input end of the valve body 1, the output end of the right pressure regulating pipe 5 extends into the upper right end of the interior of the fixed cylinder 2, the input end of the left pressure regulating pipe 6 is connected to the output end of the valve body 1, and the output end of the left pressure regulating pipe 6 extends into the upper left end of the interior of the fixed cylinder 2 The groove plate 7 is rotatably mounted on the inner top of the fixed cylinder 2, and the groove plate 7 is slidably and sealedly connected to the inner wall of the fixed cylinder 2. A left arc groove and a right arc groove are respectively arranged on the left and right sides of the groove plate 7, and the ends of the two arc grooves are respectively arranged with a through hole 1 and a through hole 2 which are connected downwards. The output end of the right pressure regulating tube 5 and the output end of the left pressure regulating tube 6 are respectively extended into the two arc grooves of the groove plate 7, and the sealing ring 8 is installed in the fixed cylinder 2, and the sealing ring 8 is in sliding and sealing contact with the lower end surface of the groove plate 7. The sealing ring 8 is provided with a through hole 3 which passes through from top to bottom, and the through hole 3 is located between the through hole 1 and the through hole 2, and the through hole 1, the through hole 2 and the through hole 3 are located on a circumference with the axis of the groove plate 7 as the center.

[0022] When it is necessary to lower the piston 3 into the valve body 1 to reduce the flow of hydraulic oil in the valve body 1, the groove plate 7 is rotated so that the through hole 2 of the right arc groove connected to the right pressure regulating pipe 5 is connected with the through hole 3 of the sealing ring 8, so that the high-pressure hydraulic oil in the input end of the valve body 1 is input into the right arc groove of the groove plate 7 through the right pressure regulating pipe 5 and enters the space between the piston 3 and the groove plate 7 inside the fixed cylinder 2 through the through holes 2 and 3, so that the pressure at both ends of the piston 3 is balanced. At this time, the piston 3 can be easily operated to lower the valve body 1 through the push rod 4; when the piston 3 is lowered into the valve body 1, the piston 3 can be easily operated to lower the valve body 1 through the push rod 4. 3 contracts into the fixed cylinder 2. When the valve body 1 is opened, the groove plate 7 is rotated in the opposite direction, so that the through hole 1 of the left arc groove connected with the right pressure regulating pipe 5 is connected with the through hole 3 of the sealing ring 8, so that the relatively high-pressure hydraulic oil in the space between the piston 3 and the groove plate 7 inside the fixed cylinder 2 enters the left arc groove of the groove plate 7 through the through holes 3 and 1 and is discharged into the output end of the valve body 1 through the left pressure regulating pipe 6, so that the pressure on the upper end of the piston 3 is reduced. At this time, the piston 3 can be easily operated to rise to open the valve body 1 through the push rod 4, thereby reducing the difficulty of opening and closing the hydraulic valve.

[0023] Embodiment 2

[0024] like Figure 4 and Figure 5 As shown, on the basis of Example 1, it also includes a shaft tube 9, a sealing ring 10 and a block 11, the shaft tube 9 is sleeved on the outer wall of the push rod 4, the middle part of the shaft tube 9 is rotatably connected to the top of the fixed cylinder 2, the lower part of the left pressure regulating tube 6 concentrically passes through the groove plate 7, a wear-resistant sealing ring is arranged between the shaft tube 9 and the fixed cylinder 2, a wear-resistant sealing ring is arranged between the push rod 4 and the shaft tube 9, a sealing ring 10 is arranged between the shaft tube 9 and the groove plate 7, a plurality of blocks 11 are arranged on the outer wall of the shaft tube 9, and grooves matching the plurality of blocks 11 are arranged on the groove plate 7, and the shaft tube 9 matches the plurality of grooves of the groove plate 7 through the plurality of blocks 11; it also includes a pointer 12 and two limit blocks 13, the pointer 12 is installed on the upper outer wall of the shaft tube 9, and the two limit blocks 13 are installed on the upper outer wall of the shaft tube 9. 3 is mounted on the upper end surface of the fixed cylinder 2, two limit blocks 13 are arranged on the left and right sides of the pointer 12 relatively, and the two limit blocks 13 position the rotation angle of the pointer 12; it also includes a motor 14, a gear 15, a lever 16, an impeller 17 and a gear 2 18, the motor 14 is mounted on the fixed cylinder 2, the gear 15 is coaxially mounted on the output shaft of the motor 14, a plurality of levers 16 are arranged on the end surface circumference of the gear 15, the impeller 17 is mounted on the output shaft of the motor 14, the impeller 17 is provided with a plurality of spring sheets, the ends of the plurality of spring sheets are respectively aligned and contacted with the plurality of levers 16, the gear 2 18 is coaxially mounted on the upper outer wall of the shaft tube 9, and the gear 2 18 is meshed with the gear 15.

[0025] The push rod 4 can rotate inside the shaft tube 9, and the wear-resistant sealing ring is used to improve the sealing performance of the push rod 4 and the shaft tube 9. When the shaft tube 9 is rotated, the shaft tube 9 drives the groove plate 7 to rotate through multiple blocks 11. The sealing ring 10 is provided to improve the sealing performance between the groove plate 7 and the shaft tube 9. The output shaft of the motor 14 drives the impeller 17 to rotate. The multiple spring sheets of the impeller 17 drive the multiple levers 16 to drive the gear 15 to rotate, so that the gear 15 meshes and drives the gear 2 18 to rotate. The gear 2 18 drives the shaft tube 9 to rotate. When the shaft When the tube 9 drives the slot disk 7 to reach the limit, the multiple spring leaves of the impeller 17 bend and disengage from the multiple levers 16, and the gear 15 stops rotating, thereby realizing the automatic adjustment of the angle of the slot disk 7. When the shaft tube 9 drives the slot disk 7 to rotate, the pointer 12 contacts with the limit block 13 on the left side. At this time, the through hole 2 of the right arc-shaped groove is aligned and connected with the through hole 3 of the sealing ring 8; the pointer 12 contacts with the limit block 13 on the left side. At this time, the through hole 1 of the left arc-shaped groove is aligned and connected with the through hole 3 of the sealing ring 8, thereby improving the conversion accuracy of the slot disk 7.

[0026] Embodiment 3

[0027] like Figure 1 , Figure 2 , Figure 3 and Figure 6As shown, on the basis of Example 2, it also includes a threaded plate 19 and a screw rod 20, the threaded plate 19 is installed on the upper end of the push rod 4, the upper part of the screw rod 20 is screwed to the threaded plate 19, and the lower end of the screw rod 20 is coaxially connected to the output shaft of the motor 14; it also includes a screw rod 21, a driving wheel 22, a driven wheel 23 and a transmission belt 24, the upper end of the screw rod 21 is rotatably screwed to the threaded plate 19, the lower end of the screw rod 21 is rotatably connected to the fixed cylinder 2, the driving wheel 22 is concentrically installed on the screw rod 20, the driven wheel 23 is concentrically installed on the screw rod 21, and the transmission belt 24 is sleeved on the driving wheel 22 and the driven wheel 23.

[0028] The output shaft of the motor 14 drives the screw 1 20 to rotate, and drives the driving wheel 22 to rotate. The driving wheel 22 drives the driven wheel 23 and the screw 2 21 to rotate through the transmission belt 24, and the screw 2 21 and the screw 1 20 rotate synchronously, and rise and fall under the action of the threads of the threaded plate 19, the screw 1 20 and the screw 2 21, thereby improving the stability of the lifting and lowering of the threaded plate 19 and the push rod 4, and realizing the automatic lifting and lowering adjustment of the piston 3.

[0029] like Figures 1 to 6As shown, a hydraulic regulating valve group of the utility model, when working, first, when the output shaft of the motor 14 drives the screw rod 1 20 to rotate, the driving wheel 22 is driven to rotate, and the driving wheel 22 drives the driven wheel 23 and the screw rod 21 to rotate through the transmission belt 24, and the screw rod 21 and the screw rod 1 20 rotate synchronously, and rise and fall under the action of the threads of the threaded plate 19, the screw rod 1 20 and the screw rod 21, the threaded plate 19 drives the push rod 4 and the piston 3 to rise and fall, and when the piston 3 needs to be lowered into the valve body 1 to reduce the hydraulic oil flow in the valve body 1, the output shaft of the motor 14 drives the impeller 17 to rotate, and the multiple spring sheets of the impeller 17 drive the multiple levers 16 to drive the gear 1 15 to rotate, so that the gear 15 meshes and drives the gear 2 18 to rotate, and the gear 2 18 drives the shaft tube 9 to rotate, and when the shaft tube 9 drives the groove plate 7 to reach the limit, the multiple spring sheets of the impeller 17 bend and disengage from the multiple levers 16, and the gear 15 stops rotating, so that it is connected with the right pressure regulating pipe 5. The through hole 2 of the right arc groove is connected with the through hole 3 of the sealing ring 8, so that the high-pressure hydraulic oil in the input end of the valve body 1 is input into the right arc groove of the groove plate 7 through the right pressure regulating pipe 5 and enters the space between the piston 3 and the groove plate 7 inside the fixed cylinder 2 through the through holes 2 and 3, so that the pressure at both ends of the piston 3 is balanced. At this time, the piston 3 can be easily operated to descend to close the valve body 1 through the push rod 4; when the piston 3 needs to be retracted into the fixed cylinder 2 to open the valve body 1, the motor 14 is reversed to rotate the groove plate 7 in the opposite direction, so that the through hole 1 of the left arc groove connected with the right pressure regulating pipe 5 is connected with the through hole 3 of the sealing ring 8, so that the higher-pressure hydraulic oil in the space between the piston 3 and the groove plate 7 inside the fixed cylinder 2 enters the left arc groove of the groove plate 7 through the through holes 3 and 1 and is discharged into the output end of the valve body 1 through the left pressure regulating pipe 6, so that the pressure on the upper end of the piston 3 is reduced. At this time, the piston 3 can be easily operated to rise through the push rod 4 to open the valve body 1.

[0030] The main functions achieved by this utility model are:

[0031] 1. Reduce the difficulty of opening and closing the hydraulic valve by adjusting the pressure balance at the upper and lower ends of the piston;

[0032] 2. Automatically lift the piston to adjust the hydraulic oil delivery flow;

[0033] 3. Automatically adjust the angle of the groove plate, and the adjustment direction matches the piston lifting direction.

Claims

1. A hydraulic regulating valve group, comprising a valve body (1), a fixed cylinder (2), a piston (3) and a push rod (4), wherein the fixed cylinder (2) is mounted on the valve body (1), the fixed cylinder (2) is communicated with the valve body (1), the piston (3) is slidably mounted inside the fixed cylinder (2), the lower end of the push rod (4) is connected to the piston (3), and the push rod (4) extends out of the upper part of the fixed cylinder (2); characterized in that: The valve body (1) further comprises a right pressure regulating pipe (5), a left pressure regulating pipe (6), a groove plate (7) and a sealing ring (8), wherein the input end of the right pressure regulating pipe (5) is connected to the input end of the valve body (1), the output end of the right pressure regulating pipe (5) extends into the upper right end of the interior of the fixed cylinder (2), the input end of the left pressure regulating pipe (6) is connected to the output end of the valve body (1), the output end of the left pressure regulating pipe (6) extends into the upper left end of the interior of the fixed cylinder (2), the groove plate (7) is rotatably mounted on the top end of the interior of the fixed cylinder (2), the groove plate (7) is slidably sealed with the inner wall of the fixed cylinder (2), and the left and right sides of the groove plate (7) are respectively A left arc groove and a right arc groove are respectively provided, and the ends of the two arc grooves are respectively provided with a through hole 1 and a through hole 2 which are connected downwards. The output end of the right pressure regulating tube (5) and the output end of the left pressure regulating tube (6) are respectively extended into the two arc grooves of the groove plate (7). The sealing ring (8) is installed in the fixed cylinder (2), and the sealing ring (8) is in sliding sealing contact with the lower end surface of the groove plate (7). The sealing ring (8) is provided with a through hole 3 which is passed through from top to bottom. The through hole 3 is located between the through hole 1 and the through hole 2. The through hole 1, the through hole 2 and the through hole 3 are located on a circumference with the axis of the groove plate (7) as the center.

2. A hydraulic regulating valve group according to claim 1, characterized in that: The invention also comprises a shaft tube (9), a sealing ring (10) and a clamping block (11). The shaft tube (9) is sleeved on the outer wall of the push rod (4). The middle part of the shaft tube (9) is rotatably connected to the top of the fixed cylinder (2). The lower part of the left pressure regulating tube (6) passes through the groove plate (7) concentrically. A wear-resistant sealing ring is arranged between the shaft tube (9) and the fixed cylinder (2). A wear-resistant sealing ring is arranged between the push rod (4) and the shaft tube (9). A sealing ring (10) is arranged between the shaft tube (9) and the groove plate (7). A plurality of clamping blocks (11) are arranged on the outer wall of the shaft tube (9). The groove plate (7) is provided with clamping grooves matching the plurality of clamping blocks (11). The shaft tube (9) matches the plurality of clamping grooves of the groove plate (7) through the plurality of clamping blocks (11).

3. A hydraulic regulating valve group as claimed in claim 2, characterized in that: It also includes a pointer (12) and two limit blocks (13), the pointer (12) being mounted on the upper outer wall of the shaft tube (9), the two limit blocks (13) being mounted on the upper end surface of the fixed cylinder (2), the two limit blocks (13) being arranged oppositely on the left and right sides of the pointer (12), and the two limit blocks (13) positioning the rotation angle of the pointer (12).

4. A hydraulic regulating valve group as claimed in claim 2, characterized in that: The invention also comprises a motor (14), a gear 1 (15), a lever (16), an impeller (17) and a gear 2 (18), wherein the motor (14) is mounted on the fixed cylinder (2), the gear 1 (15) is coaxially mounted on the output shaft of the motor (14), a plurality of levers (16) are arranged on the circumference of the end surface of the gear 1 (15), the impeller (17) is mounted on the output shaft of the motor (14), the impeller (17) is provided with a plurality of spring sheets, the ends of the plurality of spring sheets are respectively aligned and in contact with the plurality of levers (16), the gear 2 (18) is coaxially mounted on the upper outer wall of the shaft tube (9), and the gear 2 (18) is meshed with the gear 1 (15).

5. A hydraulic regulating valve group as claimed in claim 4, characterized in that: It also includes a threaded plate (19) and a screw rod (20), wherein the threaded plate (19) is mounted on the upper end of the push rod (4), the upper part of the screw rod (20) is threadedly connected to the threaded plate (19), and the lower end of the screw rod (20) is coaxially connected to the output shaft of the motor (14).

6. A hydraulic regulating valve group according to claim 5, characterized in that: The invention also comprises a second screw rod (21), a driving wheel (22), a driven wheel (23) and a transmission belt (24). The upper end of the second screw rod (21) is rotatably screwed to the threaded plate (19), the lower end of the second screw rod (21) is rotatably connected to the fixed cylinder (2), the driving wheel (22) is coaxially mounted on the first screw rod (20), the driven wheel (23) is coaxially mounted on the second screw rod (21), and the transmission belt (24) is sleeved on the driving wheel (22) and the driven wheel (23).

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