A zero position adjustment device for a rotary flow control valve

Abstract

The invention discloses a zero position adjustment device for a rotary flow control valve, comprising a fixed chassis, an adjustment turntable, a fixing screw, an adjustment screw and a pressure block; the fixed chassis is pressed and fixed to two end faces of the rotary flow control valve by fixing screws; the adjustment turntable is placed on the fixed chassis and can rotate relative to the chassis; the motor on the rotary flow control valve is tightly fixed to the adjustment turntable by adjusting screws and a pressure block, so that the motor can rotate synchronously with the adjustment turntable relative to the chassis; there are scale lines on the adjustment turntable and the fixed chassis, and the rotation angles of the turntable and the motor can be read. The invention effectively improves the accuracy of valve zero position adjustment, and has the advantages of simple structure, easy operation, low cost, strong versatility, etc.

Description

Technical Field

[0001] The invention relates to an adjusting device for a flow control valve, in particular to a zero position adjusting device for a rotary flow control valve. Background Art

[0002] The rotary flow control valve is a complex component that integrates motor and control technology. Its main function is to connect the electrical part and the hydraulic part in the hydraulic system. It can convert the input tiny electrical signal into a high-power hydraulic signal output. It has the advantages of small input power, high power amplification ratio, good dynamic performance, etc., and has broad application prospects.

[0003] At present, there is no effective device for adjusting the zero position of the rotary flow control valve. When adjusting the zero position of the valve, it is manually adjusted, which is inefficient and requires a long time to adjust, which is time-consuming and laborious. With the in-depth promotion and extensive and large-scale use of rotary flow control valves, an efficient and fast zero position adjustment device is bound to be needed to improve the zero position adjustment efficiency of rotary flow control valves and reduce costs. Summary of the invention

[0004] The object of the present invention is to provide a zero position adjustment device for a rotary flow control valve, which can effectively improve the accuracy and efficiency of the zero position adjustment of the rotary flow control valve.

[0005] The technical solution to achieve the purpose of the present invention is: a rotary flow control valve zero position adjustment device, comprising a fixed chassis, an adjustment dial, a fixing screw, an adjustment screw and a pressure block;

[0006] The fixed chassis is a disc-shaped structure, and two symmetrical ears are arranged at the bottom of the fixed chassis; the fixing screws lock the two end surfaces of the flow control valve through the threaded holes on the ears, so that the fixed chassis is fixed; the adjusting dial is placed on the fixed chassis and can rotate freely relative to the fixed chassis; the fixed chassis and the adjusting dial are both provided with graduation scales, and the graduation scales are aligned during pre-assembly, and are used to read the relative rotation angle when the adjusting dial and the fixed chassis rotate relative to each other; the adjusting dial is provided with two symmetrical ear structures, and the adjusting screws adjust the mutual distance between the two pressure blocks through the ear structures on the adjusting dial, so that the two pressure blocks press the motor housing on the control valve; when the adjusting dial rotates, it drives the motor to rotate relative to the housing of the control valve, thereby adjusting the zero position of the rotary flow control valve.

[0007] Compared with the prior art, the significant advantages of the present invention are: the present invention provides a zero position adjustment device for a rotary flow control valve, which can improve the adjustment accuracy and efficiency of the zero position of the rotary flow control valve, and has the characteristics of simple structure, easy operation, low cost, and strong versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a structural schematic diagram of a zero position adjustment device of a rotary flow control valve of the present invention.

[0009] Figure 2 It is a top view of the zero position adjustment device of the rotary flow control valve of the present invention.

[0010] Among them, 1-fixed chassis, 2-adjusting dial, 3-fixing screw, 4-adjusting screw, 5-pressure block. DETAILED DESCRIPTION

[0011] Combination Figure 1 , Figure 2 A rotary flow control valve zero position adjustment device includes a driving fixed chassis 1, an adjustment turntable 2, a fixing screw 3, an adjustment screw 4, and a pressure block 5.

[0012] The fixed chassis 1 is a disc-shaped structure, with two symmetrical ear structures at the bottom of the chassis and two threaded through holes at the center of the ear; the fixing screw 3 adjusts the relative distance through the threaded holes on the ear, thereby locking the two end faces of the flow control valve and making the fixed chassis 1 immobile. The adjusting dial 2 is placed on the fixed chassis 1 and can rotate freely relative to the fixed chassis 1. There are graduation scales on both the fixed chassis 1 and the adjusting dial 2, which can be aligned during pre-assembly, and the angle of relative rotation can be read when the adjusting dial 2 and the fixed chassis 1 rotate relative to each other. The adjusting dial 2 is provided with two symmetrical ear structures, with two threaded through holes at the center of the ear. The adjusting screw 4 adjusts the mutual distance between the two pressure blocks 5 through the ear structure on the adjusting dial 2, so that the two pressure blocks 5 can tightly press the motor housing on the control valve. When the adjusting dial 2 rotates, it can drive the motor to rotate relative to the housing of the control valve, thereby adjusting the zero position of the rotary flow control valve.

[0013] Furthermore, the adjusting screw 4 is fixedly connected to the corresponding pressing block 5 .

[0014] Furthermore, two symmetrical ears on the adjusting dial 2 are provided with threaded holes, and the adjusting screw 4 adjusts the relative distance of the pressing block 5 between the two screws through the threaded holes, so that the adjusting dial 2 and the motor housing of the flow control valve can rotate synchronously.

[0015] Furthermore, the threaded hole on the ear of the adjusting dial 2 is arranged at the center of the ear, and the line connecting the two threaded holes passes through the center of the circle of the adjusting dial 2.

[0016] Furthermore, the threaded hole on the support ear of the fixed chassis 1 is arranged at the center of the support ear, and the connecting line of the two threaded holes passes through the center of the fixed chassis 1 .

[0017] When the zero position adjustment device of the rotary flow control valve of the present invention is actually working, the motor as a whole can be driven to rotate relative to the valve body by rotating the adjustment dial. At the same time, the rotation angle of the motor as a whole can be accurately read according to the scales on the fixed chassis and the adjustment dial, so the zero position of the valve can be accurately adjusted.

[0018] The present invention is described in detail below with reference to the embodiments.

[0019] Example

[0020] A zero position adjustment device for a rotary flow control valve comprises a fixed chassis 1, an adjustment dial 2, a fixing screw 3, an adjusting screw 4, and a pressure block 5. The fixed chassis 1 is a disc-shaped structure, and has two symmetrical ears at one end of the chassis. The fixing screw 3 locks the two end surfaces of the flow control valve through the threaded holes on the ears, so that the fixed chassis is fixed. The adjusting dial 2 is a disc-shaped structure, which is placed on the fixed chassis 1 and can rotate freely relative to the fixed chassis 1. There are graduation scales on both the fixed chassis 1 and the adjustment dial 2, which can be aligned during pre-assembly, and when the adjustment dial 2 and the fixed chassis 1 rotate relative to each other, the relative rotation angle can be read. One end of the adjustment dial 2 has two symmetrical ear structures, and the adjusting screw 4 adjusts the mutual distance between the two pressure blocks 5 through the ear structures on the adjustment dial 2, so that the two pressure blocks 5 can tightly press the motor housing on the control valve. When the adjustment dial 2 rotates, it can drive the motor to rotate relative to the housing of the control valve, thereby adjusting the zero position of the rotary flow control valve.

[0021] The fixing screws can adjust the mutual distance between the two screws through the threaded holes in the two symmetrical ears on the fixed chassis, so that the fixed chassis can be fixedly connected to the housing of the flow control valve. The adjusting screws can adjust the mutual distance between the pressing blocks between the two screws through the threaded holes in the two symmetrical ears on the adjusting turntable, so that the adjusting turntable and the motor housing of the flow control valve can rotate synchronously.

[0022] The zero position adjustment device of the rotary flow control valve of the present invention can improve the adjustment accuracy and efficiency of the zero position of the rotary flow control valve, and has the characteristics of simple structure, easy operation, low cost, strong versatility, etc.

Claims

1. A zero position adjustment device for a rotary flow control valve, characterized in that: It comprises a fixed chassis (1), an adjusting turntable (2), a fixing screw (3), an adjusting screw (4) and a pressing block (5); The fixed chassis (1) is a disc-shaped structure, and two symmetrical ears are arranged at the bottom of the fixed chassis; the fixing screw (3) locks the two end surfaces of the flow control valve through the threaded holes on the ears, so that the fixed chassis (1) is fixed; the adjusting dial (2) is placed on the fixed chassis (1) and can rotate freely relative to the fixed chassis (1); the fixed chassis (1) and the adjusting dial (2) are both provided with graduation scales, and the graduation scales are aligned during pre-assembly, and are used to read the relative rotation angle when the adjusting dial (2) and the fixed chassis (1) rotate relative to each other; the adjusting dial (2) is provided with two symmetrical ear structures, and the adjusting screw (4) adjusts the mutual distance between the two pressure blocks (5) through the ear structures on the adjusting dial (2), so that the two pressure blocks (5) press the motor housing on the control valve; when the adjusting dial (2) rotates, it drives the motor to rotate relative to the housing of the control valve, thereby adjusting the zero position of the rotary flow control valve.

2. The zero position adjustment device of a rotary flow control valve according to claim 1, characterized in that: The adjusting screw (4) is fixedly connected to the corresponding pressing block (5).

3. The zero position adjustment device of a rotary flow control valve according to claim 1 or 2, characterized in that: Two symmetrical ears on the adjusting turntable (2) are provided with threaded holes, and the adjusting screw (4) adjusts the relative distance of the pressing block (5) between the two screws through the threaded holes, so that the adjusting turntable (2) and the motor housing of the flow control valve can rotate synchronously.

4. The zero position adjustment device for a rotary flow control valve according to claim 3, characterized in that: The threaded hole on the support ear of the adjusting turntable (2) is arranged at the center of the support ear, and the connecting line of the two threaded holes passes through the center of the circle of the adjusting turntable (2).

5. The zero position adjustment device of a rotary flow control valve according to claim 1, characterized in that: The threaded hole on the support ear of the fixed chassis (1) is arranged at the center of the support ear, and the connecting line of the two threaded holes passes through the center of the fixed chassis (1).

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