Adjustable speed regulating valve

Abstract

The utility model belongs to the technical field of hydraulic elements, and particularly relates to an adjustable speed regulating valve which comprises a valve sleeve and a connecting sleeve, the connecting sleeve is in threaded connection with the valve sleeve through a threaded sleeve, the side wall of the valve sleeve is communicated and connected with an oil inlet sleeve, the oil inlet sleeve is provided with an oil inlet, the side wall of the valve sleeve is provided with an oil outlet, and the oil outlet is communicated with the connecting sleeve. An adjusting disc is connected into the valve sleeve in a sealed and sliding mode. The rotary rod rotates along with the rotary knob, the rotary rod drives the worm to rotate, the worm is meshed with the worm gear to drive the worm gear to rotate, the worm gear drives the rotary table to rotate, the rotary table drives the adjusting disc to axially move in the valve sleeve through the connecting rod, the area of the oil outlet is adjusted, and flow control is achieved. No extra tool is needed in the whole process, micro-angle rotation and micro-displacement adjustment of the adjusting disc can be achieved through worm and worm wheel transmission, and the requirement for fine adjustment of flow of a hydraulic system is met.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic component technology, specifically an adjustable speed control valve. Background Technology

[0002] In throttle valve speed control systems, if the load pressure fluctuates frequently, even with a fixed throttle orifice area, changes in the pressure difference across the throttle valve will cause flow fluctuations, making it difficult to stabilize the actuator's speed. Therefore, throttle valves are suitable for systems with small load variations and where flow changes have minimal impact on the working mechanism. Hydraulic systems with frequently changing load pressures and requiring stable flow should use pressure-compensated speed control valves, i.e., speed control valves, which can automatically adjust to maintain a relatively constant flow.

[0003] Currently, various methods have been proposed for an adjustable speed control valve in existing technologies. For example, a patent application with publication number "CN215672939U" discloses an adjustable pressure-compensated speed control valve. An adjusting rod is movably sleeved inside a threaded sleeve. A hexagonal bolt groove is provided on the left end of the adjusting rod, and a throttling rod is fixedly installed on the right end of the adjusting rod. The throttling rod is movably fitted with the throttling valve sleeve. A hexagonal nut is installed on the left end of the threaded sleeve corresponding to the outer surface of the adjusting rod. Threads are installed on the outer surface of the adjusting rod and the inner surface of the threaded sleeve, and the adjusting rod is movably engaged with both the hexagonal nut and the threaded sleeve through the threads. A sealing element is installed on the outside of the throttling rod. The user can use a hexagonal wrench to rotate the adjusting rod by engaging with the hexagonal bolt groove, causing the adjusting rod to move the throttling rod to the left end. However, when adjusting the throttling rod, workers need to use additional tools, which is inconvenient and increases labor costs and operation time. Furthermore, the adjusting rod is threadedly connected to the screw sleeve. This connection method has transmission clearance. During the adjustment process, this clearance will cause the small movements of the adjusting rod to be inaccurate, resulting in displacement deviation. It is difficult to achieve precise fine-tuning and affects the control accuracy of the speed control valve.

[0004] Therefore, this utility model provides an adjustable speed control valve. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: An adjustable speed control valve of this utility model includes a valve sleeve and a connecting sleeve. The connecting sleeve is threadedly connected to the valve sleeve via a threaded sleeve. An oil inlet sleeve is connected to the side wall of the valve sleeve, and an oil inlet is provided on the oil inlet sleeve. An oil outlet is provided on the side wall of the valve sleeve. An adjusting disc is slidably connected inside the valve sleeve. A mechanism box is fixedly connected to the end of the connecting sleeve away from the valve sleeve. A worm gear is rotatably connected to the inner wall of the mechanism box. A rotating rod is rotatably connected inside the mechanism box. A worm is fixedly connected to the rotating rod, and the worm meshes with the worm gear. The rotating rod passes through the rotating mechanism box. A knob is fixedly connected to the upper end of the rotating rod. An observation mechanism for observing the flow rate is installed on the mechanism box, and a moving mechanism for moving the adjusting disc is installed on the worm gear.

[0007] Preferably, the observation mechanism includes a dial, a scale needle, and a pointer. The dial is fixedly installed at the upper end of the mechanism box, the rotating rod passes through the dial to rotate it, the pointer is fixedly installed at the lower end of the knob, and the scale needle is located at the upper end of the dial.

[0008] Preferably, the moving mechanism includes a turntable and a connecting rod. The turntable is fixedly mounted on the side wall of the worm gear, one end of the connecting rod is rotatably mounted on the turntable, and the other end of the connecting rod is rotatably mounted on the side wall of the adjusting plate.

[0009] Preferably, the connecting rod is rotatably mounted at a position offset from the center of the turntable.

[0010] Preferably, the knob is provided with anti-slip strips on its sidewall.

[0011] Preferably, a first sealing ring is provided at the connection between the connecting sleeve and the mechanism box.

[0012] Preferably, a second sealing ring is provided at the connection between the valve sleeve and the oil inlet sleeve.

[0013] Preferably, the transmission between the worm and the worm wheel has self-locking properties.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. The adjustable speed control valve of this utility model drives a rotating rod to rotate by rotating a knob. The rotating rod drives a worm gear to rotate, which in turn drives a worm wheel to rotate. The worm wheel drives a turntable to rotate, which in turn drives an adjustment disc to rotate via a connecting rod. This allows adjustment of the adjustment disc without the need for additional tools. At the same time, the worm gear transmission makes it easier to achieve small-angle rotation, thereby achieving small displacement adjustment of the adjustment disc and meeting the needs of hydraulic systems for precise flow regulation.

[0016] 2. The adjustable speed control valve described in this utility model allows the operator to intuitively adjust the speed according to the scale indication through the cooperation of the knob, scale and pointer, and accurately control the position of the adjustment plate to achieve precise speed control of the hydraulic system. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a perspective view of the present invention;

[0019] Figure 2 This is a schematic cross-sectional view of the mechanism box of this utility model;

[0020] Figure 3 This is a schematic diagram of the connection structure of the connecting sleeve and the threaded sleeve of this utility model;

[0021] Figure 4 This is a partial structural schematic diagram of the valve sleeve in this utility model.

[0022] In the diagram: 1. Valve sleeve; 2. Connecting sleeve; 3. First sealing ring; 4. Mechanism box; 5. Knob; 6. Dial; 7. Oil inlet sleeve; 8. Oil inlet; 9. Second sealing ring; 10. Oil outlet; 11. Dial needle; 12. Pointer; 13. Rotating rod; 14. Worm gear; 15. Worm wheel; 16. Turntable; 17. Connecting rod; 18. Adjusting disc; 19. Threaded sleeve. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] Specific implementation examples are given below.

[0025] like Figures 1 to 4As shown in the embodiment of this utility model, an adjustable speed control valve includes a valve sleeve 1 and a connecting sleeve 2. The connecting sleeve 2 is threadedly connected to the valve sleeve 1 via a threaded sleeve 19. An oil inlet sleeve 7 is connected to the side wall of the valve sleeve 1, and an oil inlet 8 is provided on the oil inlet sleeve 7. An oil outlet 10 is provided on the side wall of the valve sleeve 1. An adjusting disc 18 is slidably connected inside the valve sleeve 1. A mechanism box 4 is fixedly connected to the end of the connecting sleeve 2 away from the valve sleeve 1. A worm gear 15 is rotatably connected to the inner wall of the mechanism box 4. A rotating rod 13 is rotatably connected inside the mechanism box 4. A worm gear 14 is fixedly connected to the rotating rod 13. The worm gear 14 meshes with the worm gear 15. The rotating rod 13 passes through the rotating mechanism box 4. A knob 5 is fixedly connected to the upper end of the rotating rod 13. An observation mechanism for observing the flow rate is installed on the mechanism box 4. A moving mechanism for moving the adjusting disc 18 is installed on the worm gear 15. During operation, hydraulic oil flows into the speed control valve through the inlet 8 and enters the valve sleeve 1 through the inlet sleeve 7. When the knob 5 is turned, the rotating rod 13 rotates accordingly, and the worm gear 14 on it drives the worm wheel 15 to rotate. The worm wheel 15 drives the turntable 16 to rotate, and the turntable 16 drives the adjusting plate 18 to move axially within the valve sleeve 1 via the connecting rod 17, changing the flow area of ​​the outlet 10, thereby regulating the flow rate and controlling the speed of the actuator.

[0026] like Figure 1 and Figure 2 As shown, the observation mechanism includes a dial 6, a scale needle 11, and a pointer 12. The dial 6 is fixedly mounted on the upper end of the mechanism box 4. The rotating rod 13 passes through the dial 6 to rotate it. The pointer 12 is fixedly mounted on the lower end of the knob 5, and the scale needle 11 is located on the upper end of the dial 6. During operation, when the adjustment dial 18 moves, the pointer 12 will correspondingly indicate the current adjustment position on the dial 6. This structure allows the operator to intuitively understand the flow rate adjustment status of the speed control valve, facilitating precise adjustment operations.

[0027] like Figure 2 As shown, the moving mechanism includes a turntable 16 and a connecting rod 17. The turntable 16 is fixedly mounted on the side wall of the worm gear 15. One end of the connecting rod 17 is rotatably mounted on the turntable 16, and the other end is rotatably mounted on the side wall of the regulating disc 18. During operation, the turntable 16 drives the regulating disc 18 to move axially within the valve sleeve 1 via the connecting rod 17. This structure allows for flexible control of the movement range of the regulating disc 18, thus adapting to different flow regulation requirements and giving the speed control valve a wider range of adaptability.

[0028] like Figure 2As shown, the connecting rod 17 is rotatably mounted on the turntable 16 at a position offset from the center. This structure allows the rotation of the turntable 16 to be more effectively converted into axial movement of the adjusting disc 18. Compared to mounting at the center, the offset mounting method allows for a greater axial movement at the same rotation angle, improving adjustment efficiency and also helping to optimize adjustment accuracy and linearity.

[0029] like Figure 1 and Figure 2 As shown, the knob 5 has anti-slip strips on its side wall. This structure effectively increases the friction between the operator's fingers and the knob 5, preventing slippage during adjustment and improving the reliability and safety of operation. This design is particularly advantageous when hands are oily or wet.

[0030] like Figure 1 As shown, a first sealing ring 3 is provided at the connection between the connecting sleeve 2 and the mechanism box 4. This structure effectively prevents hydraulic oil leakage at this connection point, further improving the sealing performance of the speed control valve, ensuring stable system pressure, and also reducing hydraulic oil waste and environmental pollution.

[0031] like Figure 1 and Figure 4 As shown, a second sealing ring 9 is provided at the connection between the valve sleeve 1 and the oil inlet sleeve 7. This structure seals the critical passage for hydraulic oil entering the speed control valve, preventing leakage under high pressure. This ensures stable hydraulic oil pressure inside the speed control valve, contributing to its normal operation and performance, and also enhancing its overall reliability and durability.

[0032] like Figure 2 As shown, the transmission between the worm gear 14 and the worm wheel 15 has a self-locking property. Through this structure, when the regulating disc 18 is subjected to a reaction force generated by factors such as fluid pressure, the self-locking function of the worm wheel 15 and the worm gear 14 can prevent the regulating disc 18 from rotating unexpectedly, ensuring the stability of the speed control valve's regulating state. This avoids flow changes caused by external interference or misoperation, improving the safety and reliability of the hydraulic system. Especially under conditions of large system pressure fluctuations or vibrations, the self-locking property effectively ensures the normal operation of the speed control valve.

[0033] Working principle: Hydraulic oil enters the speed control valve through inlet 8, passes through inlet sleeve 7, and reaches the inside of valve sleeve 1. When knob 5 is turned, knob 5 drives rotating rod 13 to rotate. Worm gear 14 on rotating rod 13 rotates accordingly and meshes with worm wheel 15, driving worm wheel 15 to rotate. Worm wheel 15 drives turntable 16 to rotate, and turntable 16 drives adjusting disc 18 to move axially within valve sleeve 1 via connecting rod 17. The movement of adjusting disc 18 changes the area of ​​oil outlet 10, thereby regulating the flow rate through the speed control valve and realizing the control of the movement speed of the actuator.

[0034] Meanwhile, the pointer 12 and dial 6 in the observation mechanism can intuitively display the adjustment status, facilitating precise adjustment by the operator. Inside the valve sleeve 1, the hydraulic oil flows out from the oil outlet 10 after being throttled by the regulating disc 18, thereby realizing the oil supply control of the actuators in the hydraulic system.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An adjustable speed regulating valve characterized by: The utility model provides a valve sleeve (1) and connecting sleeve (2) are connected through the threaded sleeve (19) with valve sleeve (1) threaded connection, the side wall of valve sleeve (1) is connected with the oil inlet sleeve (7) of communication, the oil inlet sleeve (7) is set up the oil inlet (8), the side wall of valve sleeve (1) is set up the oil outlet (10), the valve sleeve (1) is sealed and is slidably connected with the adjusting disc (18), the connecting sleeve (2) is fixedly connected with the mechanism box (4) away from the one end of valve sleeve (1), the mechanism box (4) inner wall is rotatably connected with the worm wheel (15), the mechanism box (4) is rotatably connected with the rotary bar (13), the rotary bar (13) is fixedly connected with the worm (14) on, the worm (14) is engaged with worm wheel (15), the rotary bar (13) penetrates rotary mechanism box (4), the rotary bar (13) is fixedly connected with the knob (5) on the upper end, the mechanism box (4) is installed for observing the observation mechanism of flow rate, the worm wheel (15) is installed for moving the moving mechanism of adjusting disc (18).

2. The adjustable speed regulating valve of claim 1 wherein: The observation mechanism includes a dial (6), a scale needle (11) and a pointer (12), the dial (6) is fixedly installed on the upper end of the mechanism box (4), the rotary bar (13) penetrates the dial (6), the pointer (12) is fixedly installed on the lower end of the knob (5), the scale needle (11) is arranged on the upper end of the dial (6).

3. The adjustable speed regulating valve of claim 1 wherein: The moving mechanism includes a rotating disc (16) and a connecting rod (17), the rotating disc (16) is fixedly installed on the side wall of the worm wheel (15), one end of the connecting rod (17) is rotatably installed on the rotating disc (16), the other end of the connecting rod (17) is rotatably installed on the side wall of the adjusting disc (18).

4. The adjustable speed regulating valve of claim 3 wherein: The connecting rod (17) is rotatably installed on the rotating disc (16) offset the position of the center.

5. The adjustable speed regulating valve of claim 1 wherein: The side wall of the knob (5) is provided with an anti-skid strip.

6. The adjustable speed regulating valve of claim 1 wherein: The connecting sleeve (2) and the mechanism box (4) are provided with a first sealing ring (3) at the connection.

7. The adjustable speed regulating valve of claim 1 wherein: The valve sleeve (1) and the oil inlet sleeve (7) are provided with a second sealing ring (9) at the connection.

8. The adjustable speed regulating valve of claim 1 wherein: The transmission of the worm (14) and the worm wheel (15) has self-locking property.

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