Water conservancy control valve convenient to adjust

Abstract

The invention belongs to the technical field of water valves, particularly relates to a water conservancy control valve convenient to adjust, and aims at solving the problem that a water conservancy control valve provided in the background technology is poor in adjusting precision, according to the scheme, the water conservancy control valve comprises a valve body, the valve body comprises a valve frame, a transverse cylinder is welded to the outer wall of one side of the valve frame, and a vertical cylinder is welded to the outer wall of one side of the transverse cylinder; a lead screw is rotationally connected to the inner wall of the vertical cylinder, a threaded sleeve is screwed to the outer wall of the lead screw, and a first connecting rod is rotationally connected to the outer wall of one side of the threaded sleeve. The rotary motion of the hand wheel can be converted into the linear displacement of the valve element through a crank connecting rod transmission structure, the opening degree adjusting precision and linearity are remarkably improved, the position of the valve element can be converted into visual flow data in real time through linkage cooperation of the dial and the pointer, the operation convenience and accuracy are greatly improved, and the practicability is high. A split type valve element structure is adopted, and balance of high sealing performance and low adjusting resistance is achieved through multiple sealing and flow channel optimization.

Description

Technical Field

[0001] The present invention relates to the technical field of water valves, and in particular to a water control valve that is easy to adjust. Background Art

[0002] Hydraulic control valves are a key device widely used in water conservancy projects, water supply and drainage systems, agricultural irrigation, and industrial fluid control. They are primarily used to regulate and control the flow, pressure, and direction of fluids in pipelines. Their core function is to precisely control water flow through mechanical or automated means to meet the needs of different working conditions. Traditional hydraulic control valves typically consist of a valve body, a valve core, a drive mechanism, and a sealing assembly. The position of the valve core is changed manually or electrically to adjust the cross-sectional area of ​​the flow channel and achieve flow control. In scenarios such as municipal water supply, flood control and drainage, and farmland irrigation, the reliability and adjustment accuracy of hydraulic control valves directly affect the operating efficiency and safety of the system.

[0003] Although the application of hydraulic control valves in the existing technology is relatively mature, there are still some shortcomings, especially in terms of linear opening adjustment accuracy and ease of operation, which need to be improved. First, most traditional valves use a straight rod or worm gear drive structure, and their adjustment process relies on the operator's experience, making it difficult to achieve a linear correspondence between flow and opening. For example, when rotating the handwheel, there is a lack of precise proportional relationship between the valve core displacement and the handwheel rotation angle, resulting in nonlinear flow regulation characteristics, especially in the low flow range where the error is significant. Secondly, the existing valves lack an intuitive flow indicator device, and the operator cannot grasp the current flow status in real time. They need to rely on external flow meters for assistance, which increases the complexity and cost of the system.

[0004] Furthermore, traditional valve core designs often employ flat or conical structures, which create a conflict between sealing performance and adjustment sensitivity. To improve sealing, the contact pressure between the valve core and the valve seat must be increased, but this design can easily lead to increased adjustment resistance, making operation laborious and prone to wear. Furthermore, the valve core's single motion trajectory makes it difficult to adapt to dynamic adjustment requirements under complex flow conditions. For example, under high-pressure or high-flow conditions, the valve core is susceptible to vibration caused by fluid impact, resulting in seal failure or reduced adjustment accuracy. Although some valves employ multi-stage pressure reduction or guide structures, these are complex structures, have high manufacturing costs, and are difficult to maintain. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a hydraulic control valve that is easy to adjust, which overcomes the deficiencies of the prior art and effectively solves the problem of poor adjustment accuracy of the hydraulic control valve.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A water control valve that is easy to adjust, includes a valve body, the valve body includes a valve frame, and a horizontal cylinder is welded to the outer wall of one side of the valve frame, a vertical cylinder is welded to the outer wall of one side of the horizontal cylinder, and a screw rod is rotatably connected to the inner wall of the vertical cylinder, a threaded sleeve is screwed on the outer wall of the screw rod, and a first connecting rod is rotatably connected to the outer wall of one side of the threaded sleeve, one end of the first connecting rod is rotatably connected to the outer wall of the front end plate, and the front end plate is located at the bottom of one side of the threaded sleeve, a rotating shaft is welded on the inner wall of the front end plate, and a rear end plate is welded to the outer wall of the end of the rotating shaft away from the front end plate, a second connecting rod is rotatably connected to the outer wall of one side of the rear end plate, and the second connecting rod is rotatably connected to the valve core at one end away from the rear end plate, wherein the front end plate is located inside the horizontal cylinder, and the rear end plate is located inside the valve frame.

[0008] Preferably, the threaded sleeve is slidably connected to the inner wall of the horizontal cylinder, and the first connecting rod is provided through the connection between the horizontal cylinder and the vertical cylinder.

[0009] Preferably, a handwheel is welded to the outer wall of the top of the screw rod, and the handwheel is located at the top of the vertical cylinder, a gear is fixedly connected to the top of the outer wall of the screw rod, and the gear is located at the top of the threaded sleeve, a C-shaped gear ring is meshed on the outer wall of the gear, and a center disk is welded at the center of the inner wall of the C-shaped gear ring, a pointer is fixedly connected to the outer wall of one side of the center disk, a support plate is welded to the top of the outer wall of one side of the vertical cylinder, and a scale is rotatably connected to the outer wall of the top of the support plate, a water flow scale is provided at the edge of the top outer wall of the scale, and the pointer is located at the top of one end of the water flow scale.

[0010] Preferably, the valve body further includes a water inlet end, and the water inlet end is welded to an outer wall at one end of the valve frame, and the outer wall at one end of the water inlet end is fixedly connected to a water inlet pipe through a flange.

[0011] Preferably, the valve body further includes a water outlet, and the water outlet is welded to the outer wall of the other end of the valve frame, and the outer wall of one end of the water outlet is fixedly connected to a drain pipe through a flange.

[0012] Preferably, the valve core includes a connecting seat, a sealing plate, a water cage and a guide ring, wherein the connecting seat is rotatably connected to the outer wall of one end of the second connecting rod, the sealing plate is welded to the outer wall of one side of the connecting seat, the water cage is welded to the outer wall of one side of the sealing plate, and the guide ring is welded to the outer wall of one side of the water cage, wherein the outer wall of the water cage is provided with water openings distributed at equal distances, and the outer diameter of the water cage is adapted to the outer diameter of the guide ring, the guide ring is slidably connected to the inner wall of the water outlet end, and the outer diameter of the sealing plate is larger than the inner diameter of the water outlet end, and the sealing plate is located inside the valve frame.

[0013] Preferably, a sealed bearing is installed on the inner wall of one end of the horizontal cylinder, and the outer wall of the end of the rotating shaft away from the rear end plate is fixedly connected to the inner ring of the sealed bearing. A sealed partition is welded inside the horizontal cylinder, and a sealing sleeve is installed through the inner wall of the sealing partition, and the rotating shaft is rotatably connected to the inner wall of the sealing sleeve.

[0014] Preferably, a limiting groove is provided on one side of the outer wall of the top of the threaded sleeve, and the inner wall of the limiting groove is slidably connected to a limiting rod, which is welded to the top and bottom inner walls of the vertical cylinder.

[0015] Preferably, a first sealing groove is provided on the outer wall of one side of the sealing plate, and a sealing ring is embedded in the inner wall of the first sealing groove. A second sealing groove is provided on the inner wall of one end of the valve frame close to the water outlet end, and the size of the sealing ring is adapted to the size of the second sealing groove, and the sealing ring and the second sealing groove are in interference fit.

[0016] The beneficial effects of the present invention are:

[0017] 1. The adjustable hydraulic control valve of the present invention, through a crank-connecting rod transmission structure including a screw, a threaded sleeve, a first connecting rod, a front plate, a rotating shaft, a rear plate and a second connecting rod, can convert the rotational motion of the handwheel into the linear displacement of the valve core, significantly improving the accuracy and linearity of the opening adjustment. Specifically, when the handwheel is turned, the screw drives the threaded sleeve to slide along the inner wall of the vertical cylinder, and the front plate is pushed to rotate around the rotating shaft through the first connecting rod, thereby driving the rear plate and the second connecting rod to work together, ultimately controlling the axial displacement of the valve core. This transmission structure optimizes the geometric relationship to ensure that the displacement of the valve core and the handwheel rotation angle are in a strictly linear relationship, thereby overcoming the defects of nonlinear adjustment of traditional valves;

[0018] 2. The adjustable water control valve of the present invention, through the linkage of the dial and the pointer, includes gears, a C-shaped gear ring, a center disk, a dial and a water flow scale, which can convert the valve core position into visual flow data in real time, greatly improving the convenience and accuracy of operation. When the screw rotates, the gear fixed on its top drives the C-shaped gear ring to rotate, driving the center disk and the pointer to deflect synchronously. The surface of the dial is marked with water flow scales distributed according to flow percentages, and the scale value pointed by the pointer directly reflects the current flow status. This not only eliminates the dependence on an external flow meter, but also enables the operator to quickly and accurately set the target flow, which is especially suitable for working conditions that require frequent adjustments;

[0019] 3. The hydraulic control valve of the present invention, which is easy to adjust, adopts a split valve core structure, including a connecting seat, a sealing plate, a water cage and a guide ring. Through multiple seals and flow channel optimization, it achieves a balance between high sealing and low adjustment resistance. The outer diameter of the sealing plate is larger than the inner diameter of the water outlet end. When closed, the sealing ring with an interference fit fits tightly with the second sealing groove of the valve frame to avoid leakage. The water holes evenly distributed on the side wall of the water cage can form a multi-stage diversion when opened, reducing fluid impact. At the same time, the sliding fit between the guide ring and the inner wall of the water outlet end provides a stable movement trajectory for the valve core, avoiding deflection and vibration, and can still maintain adjustment sensitivity under high-pressure conditions, thereby extending the service life of the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a hydraulic control valve that is easy to adjust proposed by the present invention;

[0021] Figure 2 This is a schematic diagram of the valve body structure of a hydraulic control valve that is easy to adjust, as proposed by the present invention;

[0022] Figure 3 This is an enlarged schematic diagram of the structure of part A of a hydraulic control valve that is easy to adjust, as proposed by the present invention;

[0023] Figure 4 This is a schematic cross-sectional view of a hydraulic control valve that is easy to adjust, as proposed by the present invention;

[0024] Figure 5 This is a schematic cross-sectional view of a vertical cylinder of a hydraulic control valve that is easy to adjust, as proposed by the present invention;

[0025] Figure 6 A schematic diagram of a cross section of a valve frame of a hydraulic control valve that is easy to adjust according to the present invention Figure 1 ;

[0026] Figure 7 A schematic diagram of a cross section of a valve frame of a hydraulic control valve that is easy to adjust according to the present invention Figure 2 ;

[0027] Figure 8 This is a structural diagram of a hydraulic control valve that is easy to adjust, proposed by the present invention, when the valve core is closed and water is not flowing;

[0028] Figure 9 This is a structural diagram of a hydraulic control valve that is easy to adjust, as proposed by the present invention, when the valve core is opened to allow water to flow;

[0029] Figure 10 This is an exploded diagram of the valve core structure of a hydraulic control valve that is easy to adjust proposed by the present invention.

[0030] In the figure: 1. valve body; 2. valve frame; 3. horizontal cylinder; 4. vertical cylinder; 5. screw rod; 6. threaded sleeve; 7. first connecting rod; 8. front end plate; 9. rotating shaft; 10. rear end plate; 11. second connecting rod; 12. valve core; 121. connecting seat; 122. sealing plate; 123. water cage; 124. guide ring; 13. handwheel; 14. gear; 15. C-shaped gear ring; 16. center plate; 17. pointer; 18. support plate; 19. dial; 20. water flow scale; 21. water inlet end; 22. water inlet pipe; 23. water outlet end; 24. drain pipe; 25. sealing bearing; 26. sealing sleeve; 27. limit groove; 28. limit rod; 29. ​​sealing ring; 30. sealing partition. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] Reference Figures 1-10 , embodiment 1, a water control valve that is easy to adjust, includes a valve body 1, the valve body 1 includes a valve frame 2, and a horizontal cylinder 3 is welded to the outer wall of one side of the valve frame 2, a vertical cylinder 4 is welded to the outer wall of one side of the horizontal cylinder 3, and a screw rod 5 is rotatably connected to the inner wall of the vertical cylinder 4, a threaded sleeve 6 is screwed on the outer wall of the screw rod 5, and a first connecting rod 7 is rotatably connected to the outer wall of one side of the threaded sleeve 6, one end of the first connecting rod 7 is rotatably connected to the outer wall of the front end plate 8, and the front end plate 8 is located at the bottom of one side of the threaded sleeve 6, a rotating shaft 9 is welded on the inner wall of the front end plate 8, and a rear end plate 10 is welded to the outer wall of the end of the rotating shaft 9 away from the front end plate 8, a second connecting rod 11 is rotatably connected to the outer wall of one side of the rear end plate 10, and the second connecting rod 11 is rotatably connected to the valve core 12 at one end away from the rear end plate 10, wherein the front end plate 8 is located inside the horizontal cylinder 3, and the rear end plate 10 is located inside the valve frame 2. The threaded sleeve 6 is slidably connected to the inner wall of the horizontal cylinder 3 , and the first connecting rod 7 is provided through the connection between the horizontal cylinder 3 and the vertical cylinder 4 .

[0033] The valve body 1's frame 2 is welded to the outer wall of a horizontal cylinder 3 and a vertical cylinder 4, forming a rigid support frame. The inner wall of the horizontal cylinder 3 is precision-machined to ensure smooth, non-binding sliding of the threaded sleeve 6. The lead screw 5 features a trapezoidal thread design, and the threaded connection with the threaded sleeve 6 is coated with a wear-resistant coating to reduce friction losses. The front end plate 8 is secured to the rotating shaft 9 by laser welding. The other end of the rotating shaft 9 is connected to the horizontal cylinder 3 via a sealed bearing 25, ensuring a tight rotational seal.

[0034] In this embodiment, a crank-connecting rod transmission structure, comprising a screw 5, a threaded sleeve 6, a first connecting rod 7, a front plate 8, a rotating shaft 9, a rear plate 10, and a second connecting rod 11, can convert the rotational motion of a handwheel 13 into a linear displacement of a valve core 12, significantly improving the precision and linearity of valve opening adjustment. Specifically, when the handwheel 13 is rotated, the screw 5 drives the threaded sleeve 6 to slide along the inner wall of the vertical cylinder 4, which in turn drives the front plate 8 to rotate about the rotating shaft 9 via the first connecting rod 7, thereby driving the rear plate 10 and the second connecting rod 11 to move in a coordinated manner, ultimately controlling the axial displacement of the valve core 12. This transmission structure, through geometric optimization, ensures that the displacement of the valve core 12 is strictly linearly related to the rotation angle of the handwheel 13, thereby overcoming the drawbacks of conventional valve nonlinear adjustment.

[0035] In the second embodiment, a handwheel 13 is welded to the outer wall of the top of the screw rod 5, and the handwheel 13 is located at the top of the vertical cylinder 4. A gear 14 is fixedly connected to the top of the outer wall of the screw rod 5, and the gear 14 is located at the top of the threaded sleeve 6. A C-shaped gear ring 15 is meshed on the outer wall of the gear 14, and a center disk 16 is welded at the center of the inner wall of the C-shaped gear ring 15. A pointer 17 is fixedly connected to the outer wall of one side of the center disk 16. A support plate 18 is welded to the top of the outer wall of one side of the vertical cylinder 4, and a dial 19 is rotatably connected to the outer wall of the top of the support plate 18. A water flow scale 20 is provided at the edge of the top outer wall of the dial 19, and the pointer 17 is located at the top of one end of the water flow scale 20.

[0036] The modular matching design of gear 14 and C-shaped gear ring 15 ensures a constant transmission ratio and prevents jumps in pointer 17. The dial 19 is made of corrosion-resistant aluminum alloy and its surface is laser-engraved with water flow scale 20. The scale values ​​are distributed in a geometric progression, with each 5% flow interval corresponding to a 1.8° rotation of the dial 19.

[0037] In this embodiment, through the linkage of the dial 19 and the pointer 17, including the gear 14, the C-shaped gear ring 15, the center disk 16, the dial 19 and the water flow scale 20, the position of the valve core 12 can be converted into visual flow data in real time, greatly improving the convenience and accuracy of operation. When the screw 5 rotates, the gear 14 fixed on its top drives the C-shaped gear ring 15 to rotate, driving the center disk 16 and the pointer 17 to deflect synchronously. The surface of the dial 19 is marked with a water flow scale 20 distributed according to the flow percentage, and the scale value pointed to by the pointer 17 directly reflects the current flow state. This not only eliminates the dependence on an external flow meter, but also enables the operator to quickly and accurately set the target flow, which is particularly suitable for working conditions that require frequent adjustments.

[0038] In the third embodiment, the valve core 12 includes a connecting seat 121, a sealing plate 122, a water cage 123 and a guide ring 124, wherein the connecting seat 121 is rotatably connected to the outer wall of one end of the second connecting rod 11, the sealing plate 122 is welded to the outer wall of one side of the connecting seat 121, the water cage 123 is welded to the outer wall of one side of the sealing plate 122, and the guide ring 124 is welded to the outer wall of one side of the water cage 123, wherein the outer wall of the water cage 123 is provided with water ports distributed at equal distances, and the outer diameter of the water cage 123 is adapted to the outer diameter of the guide ring 124, the guide ring 124 is slidably connected to the inner wall of the water outlet end 23, and the outer diameter of the sealing plate 122 is larger than the inner diameter of the water outlet end 23, and the sealing plate 122 is located inside the valve frame 2. A first sealing groove is provided on the outer wall of one side of the sealing plate 122, and a sealing ring 29 is embedded in the inner wall of the first sealing groove. A second sealing groove is provided on the inner wall of one end of the valve frame 2 close to the water outlet end 23, and the size of the sealing ring 29 is adapted to the size of the second sealing groove, and there is an interference fit between the sealing ring 29 and the second sealing groove.

[0039] The sealing ring 29 of the sealing plate 122 is made of fluororubber, with a temperature resistance range of -20°C to 150°C. The inner wall of the second sealing groove is sprayed with a polytetrafluoroethylene coating to reduce frictional resistance. The water inlets of the water cage 123 are arranged in an array. During installation, the sealing ring 29 is pressed into the first sealing groove using a dedicated fixture.

[0040] In this embodiment, a split valve core 12 structure is adopted, including a connecting seat 121, a sealing plate 122, a water cage 123 and a guide ring 124. Through multiple seals and flow channel optimization, a balance between high sealing and low adjustment resistance is achieved. The outer diameter of the sealing plate 122 is larger than the inner diameter of the water outlet 23. When closed, the sealing ring 29 with an interference fit fits tightly with the second sealing groove of the valve frame 2 to prevent leakage. The water holes evenly distributed on the side wall of the water cage 123 can form a multi-stage diversion when opened, reducing fluid impact. At the same time, the sliding fit between the guide ring 124 and the inner wall of the water outlet 23 provides a stable motion trajectory for the valve core 12, avoiding deflection and vibration, and can still maintain adjustment sensitivity under high-pressure conditions, thereby extending the service life of the valve.

[0041] The valve body 1 also includes a water inlet end 21, which is welded to the outer wall of one end of the valve frame 2. The outer wall of one end of the water inlet end 21 is fixedly connected to the water inlet pipe 22 via a flange. The valve body 1 also includes a water outlet end 23, which is welded to the outer wall of the other end of the valve frame 2. The outer wall of one end of the water outlet end 23 is fixedly connected to the drain pipe 24 via a flange.

[0042] A sealed bearing 25 is installed on the inner wall of one end of the horizontal cylinder 3, and the outer wall of the end of the rotating shaft 9 away from the rear end plate 10 is fixedly connected to the inner ring of the sealed bearing 25. A sealed partition 30 is welded inside the horizontal cylinder 3, and a sealing sleeve 26 is installed through the inner wall of the sealing partition 30. The rotating shaft 9 is rotatably connected to the inner wall of the sealing sleeve 26.

[0043] A sealing diaphragm 30 divides the transverse cylinder 3 into a transmission chamber and a sealing chamber. The front plate 8 is located in the sealing chamber, while the rear plate 10 is located in the transmission chamber. The sealing sleeve 26, constructed of a double layer of nitrile rubber, seals both sides of the sealing diaphragm 30. The engagement of the limiting rod 28 and the limiting groove 27 restricts the threaded sleeve 6 to only vertical movement.

[0044] A limiting groove 27 is provided on one side of the outer wall of the top of the threaded sleeve 6 , and a limiting rod 28 is slidably connected to the inner wall of the limiting groove 27 . The limiting rod 28 is welded to the inner walls of the top and bottom of the vertical tube 4 .

[0045] Working principle: The working process of the present invention can be divided into four stages: adjustment input, mechanical transmission, valve core 12 action and flow feedback:

[0046] Adjustment Input: The operator turns handwheel 13, driving screw 5 to rotate. Due to the threaded engagement between screw 5 and threaded sleeve 6, this rotational motion is converted into axial displacement of sleeve 6. With each rotation of handwheel 13, sleeve 6 moves one pitch (e.g., 5 mm) along the inner wall of vertical cylinder 4.

[0047] Mechanical Transmission: The displacement of threaded sleeve 6 drives front plate 8 to rotate about axis 9 via first connecting rod 7. Front plate 8 and rear plate 10 are rigidly connected via axis 9, causing rear plate 10 to deflect synchronously, driving second connecting rod 11 to oscillate. The distal end of second connecting rod 11 is hinged to valve core 12, converting the oscillation into axial motion of valve core 12.

[0048] Valve core 12 moves: The sealing plate 122 of valve core 12 moves axially with the connecting seat 121. When the sealing plate 122 moves away from the water outlet 23, the water opening of the water cage 123 is gradually exposed, allowing fluid to enter the water outlet 23 through the opening. Conversely, the sealing plate 122 presses against the second sealing groove, blocking water flow. The guide ring 124 slides along the inner wall of the water outlet 23 to ensure the straightness of the valve core 12's movement trajectory.

[0049] Flow Feedback: Gear 14 at the top of screw 5 rotates synchronously with the rotation of C-shaped gear ring 15, which in turn deflects center disk 16 and pointer 17. Pointer 17 indicates the flow percentage corresponding to the current opening on water flow scale 20 on dial 19. For example, when pointer 17 points to "50%," the water inlet opening is 50% of the designed maximum. The flow rate is linearly related to the opening.

[0050] Under high-pressure conditions, the impact of the fluid is dispersed through the flow-guiding structure of the water cage 123, preventing vibration of the valve core 12. The interference fit between the sealing ring 29 and the second sealing groove further enhances the sealing effect under fluid pressure. The entire adjustment process requires no external power and achieves high-precision control solely through mechanical linkage, making it suitable for outdoor or non-electrical environments.

[0051] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A hydraulic control valve that is easy to adjust, comprising a valve body (1), characterized in that: The valve body (1) includes a valve frame (2), and a horizontal cylinder (3) is welded to the outer wall of one side of the valve frame (2), a vertical cylinder (4) is welded to the outer wall of one side of the horizontal cylinder (3), and a screw rod (5) is rotatably connected to the inner wall of the vertical cylinder (4), a threaded sleeve (6) is screwed to the outer wall of the screw rod (5), and a first connecting rod (7) is rotatably connected to the outer wall of one side of the threaded sleeve (6), and a front end plate (8) is rotatably connected to the outer wall of one end of the first connecting rod (7), and the front end plate (8) is located on the threaded sleeve ( 6), a rotating shaft (9) is welded on the inner wall of the front end plate (8), and a rear end plate (10) is welded on the outer wall of the rotating shaft (9) away from the front end plate (8), a second connecting rod (11) is rotatably connected to the outer wall of one side of the rear end plate (10), and a valve core (12) is rotatably connected to the end of the second connecting rod (11) away from the rear end plate (10), wherein the front end plate (8) is located inside the horizontal cylinder (3), and the rear end plate (10) is located inside the valve frame (2).

2. The hydraulic control valve that is easy to adjust according to claim 1 is characterized in that: The threaded sleeve (6) is slidably connected to the inner wall of the horizontal cylinder (3), and the first connecting rod (7) is arranged through the connection between the horizontal cylinder (3) and the vertical cylinder (4).

3. The hydraulic control valve that is easy to adjust according to claim 1 is characterized in that: A hand wheel (13) is welded to the outer wall of the top of the screw rod (5), and the hand wheel (13) is located at the top of the vertical cylinder (4). A gear (14) is fixedly connected to the top of the outer wall of the screw rod (5), and the gear (14) is located at the top of the threaded sleeve (6). A C-shaped toothed ring (15) is meshed on the outer wall of the gear (14), and a center disk (16) is welded at the center of the inner wall of the C-shaped toothed ring (15). A pointer (17) is fixedly connected to the outer wall of one side of the center disk (16). A support plate (18) is welded to the top of the outer wall of one side of the vertical cylinder (4), and a scale plate (19) is rotatably connected to the outer wall of the top of the support plate (18). A water flow scale (20) is provided at the edge of the outer wall of the top of the scale plate (19), and the pointer (17) is located at the top of one end of the water flow scale (20).

4. The hydraulic control valve that is easy to adjust according to claim 1 is characterized in that: The valve body (1) further comprises a water inlet end (21), and the water inlet end (21) is welded to an outer wall at one end of the valve frame (2), and the outer wall at one end of the water inlet end (21) is fixedly connected to a water inlet pipe (22) via a flange.

5. The hydraulic control valve that is easy to adjust according to claim 1 is characterized in that: The valve body (1) further comprises a water outlet end (23), and the water outlet end (23) is welded to the outer wall of the other end of the valve frame (2), and the outer wall of one end of the water outlet end (23) is fixedly connected to a drain pipe (24) via a flange.

6. The hydraulic control valve that is easy to adjust according to claim 1, characterized in that: The valve core (12) comprises a connecting seat (121), a sealing plate (122), a water-passing cage (123) and a guide ring (124), wherein the connecting seat (121) is rotatably connected to the outer wall of one end of the second connecting rod (11), the sealing plate (122) is welded to the outer wall of one side of the connecting seat (121), the water-passing cage (123) is welded to the outer wall of one side of the sealing plate (122), and the guide ring (124) is welded to the outer wall of one side of the water-passing cage (123), wherein the outer wall of the water-passing cage (123) is provided with water-passing openings distributed at equal distances, and the outer diameter of the water-passing cage (123) is adapted to the outer diameter of the guide ring (124), and the guide ring (124) is slidably connected to the inner wall of the water outlet end (23), and the outer diameter of the sealing plate (122) is larger than the inner diameter of the water outlet end (23), and the sealing plate (122) is located inside the valve frame (2).

7. The hydraulic control valve that is easy to adjust according to claim 1 is characterized in that: A sealing bearing (25) is installed on the inner wall of one end of the transverse cylinder (3), and the outer wall of one end of the rotating shaft (9) away from the rear end plate (10) is fixedly connected to the inner ring of the sealing bearing (25). A sealing partition (30) is welded inside the transverse cylinder (3), and a sealing sleeve (26) is installed through the inner wall of the sealing partition (30). The rotating shaft (9) is rotatably connected to the inner wall of the sealing sleeve (26).

8. The hydraulic control valve that is easy to adjust according to claim 1, characterized in that: A limiting groove (27) is provided on one side of the outer wall of the top of the threaded sleeve (6), and the inner wall of the limiting groove (27) is slidably connected to a limiting rod (28), which is welded to the inner walls of the top and bottom of the vertical cylinder (4).

9. The hydraulic control valve that is easy to adjust according to claim 6, characterized in that: A first sealing groove is provided on the outer wall of one side of the sealing plate (122), and a sealing ring (29) is embedded in the inner wall of the first sealing groove. A second sealing groove is provided on the inner wall of one end of the valve frame (2) close to the water outlet end (23), and the size of the sealing ring (29) is adapted to the size of the second sealing groove, and the sealing ring (29) and the second sealing groove are in interference fit.

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