A through-type stepper motor driven flexible hose clamp valve structure

Abstract

This invention provides a flexible hose clamp valve structure driven by a through-type stepper motor, belonging to the field of clamp valve technology. It includes a through-type stepper motor, a clamp head, a cylinder, a top tube nut, and a drive control board. The through-type stepper motor drives the clamp head to reciprocate within the cylinder. The drive control board adjusts the input pulse count to change the stroke of the clamp head, thereby changing the gap between the clamp head and the top tube nut. The top tube nut is used to manually adjust its position to readjust the gap. Using a low-power through-type stepper motor, compared to an electromagnetic spring-driven method, it avoids the problem of electromagnet overheating leading to clamping failure. Extensive testing has shown that the clamp valve of this invention can still operate stably, effectively ensuring the reliability of the clamp valve during long-term operation.

Description

Technical Field

[0001] This utility model relates to the field of hose clamp valve technology, specifically a hose clamp valve structure driven by a through stepper motor. Background Technology

[0002] A hose pinch valve (also known as a pipe clamp valve, tube clamp valve, or squeeze valve) is a unique and widely used fluid control valve. Its core principle is to cut off or regulate fluid flow by using external mechanical force to squeeze a flexible hose. The fluid only contacts the inner wall of the hose, and the valve body and actuator are completely isolated from the fluid. This eliminates the risks of material blockage and fluid contamination.

[0003] The following problems were found in the relevant technology: There are two existing drive methods for hose clamp valves:

[0004] 1. Electromagnetic and spring drive: The mechanical structure is driven to squeeze hose one by the principle of electromagnet attraction when energized. After the power is cut off, the mechanical structure is pushed to squeeze hose two by the spring tension.

[0005] 2. Cylinder drive: Compressed air is used to drive the cylinder / diaphragm to evenly squeeze the hose.

[0006] The two solutions mentioned above are as follows: the electromagnetic and spring-driven method suffers from overheating of the electromagnet during high-frequency operation, which reduces the attraction capacity and leads to clamping failure; the spring has a limited lifespan and fails after exceeding the fatigue limit, resulting in clamping failure; moreover, this method cannot achieve precise control of clamping force and can only cut off the flow but cannot achieve the function of regulating the flow. In response to this, we propose a through-type stepper motor driven hose clamp valve structure.

[0007] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background section of this application, and therefore may include prior art information that does not constitute prior art information known to those skilled in the art. Utility Model Content

[0008] This utility model aims to solve at least one of the technical problems existing in the prior art or related technologies. To address the issue of the inability to adjust flow rate in the prior art, this utility model provides a through-type stepper motor driven hose clamp valve structure. It employs an adjustable pulse count structure combined with stepper motor stroke control to achieve precise clamping force control. The specific technical solution is as follows:

[0009] The through-type stepper motor serves as a power source, driving the pipe clamping head to reciprocate within the cylinder, thereby enabling the opening and closing of the two pipes. Specifically, the output shaft of the through-type stepper motor is connected to a transmission mechanism. The transmission mechanism can employ common transmission methods in the field, such as a lead screw and nut mechanism or a gear and rack mechanism, to convert the rotational motion of the stepper motor into the linear motion of the pipe clamping head, allowing the pipe clamping head to reciprocate along the axial direction within the cylinder.

[0010] When the clamp head moves closer to the hose, it squeezes the hose, cutting off the fluid flow; when the clamp head moves away from the hose, the hose returns to its original shape, and the fluid can flow normally.

[0011] In the above technical solution, the drive control board is used to adjust the number of input pulses. By changing the number of pulses input to the stepper motor, the stroke of the clamping head can be changed, thereby changing the gap between the clamping head and the top tube nut, and thus adjusting the clamping force.

[0012] The drive control board integrates circuit components such as a microprocessor, a driver chip, and a power module. The microprocessor receives external control signals and generates corresponding pulse signals according to a preset program; the driver chip amplifies and converts the pulse signals generated by the microprocessor to drive the stepper motor; and the power module provides a stable 24V power supply to the entire drive control board and the stepper motor.

[0013] For example, when it is necessary to increase the clamping force, the drive control board increases the number of pulses input to the stepper motor, the stepper motor rotation angle increases, the clamping head moves a longer distance, the gap between the clamping head and the top tube nut decreases, and the clamping force increases; conversely, reducing the number of pulses decreases the clamping force.

[0014] The jacking nut is used for manual adjustment of its front and rear positions, thereby readjusting the gap. The jacking nut is connected to the cylinder by threads, which are manufactured using a high-precision machining process to ensure that the jacking nut can move smoothly and accurately during rotation.

[0015] When the system needs to be debugged on-site, or when the clamping force needs to be finely adjusted due to various factors during actual use, the operator can use tools such as a wrench to rotate the jacking nut. The jacking nut moves along the axial direction of the cylinder, changing the relative position between it and the clamping head, thereby achieving further adjustment of the clamping force.

[0016] The inner cavity of the cylinder is fitted with a rear clamping shaft for abutting the clamping head.

[0017] A baffle is embedded on the side of the clamping head near the through stepper motor.

[0018] The drive control board is fitted with a protective cover that is fixed to the through-type stepper motor and the connecting flange.

[0019] 10. Compared with the prior art, the beneficial effects of this utility model are: the structure of the through-type stepper motor driven hose clamp valve:

[0020] 11. First, the use of a low-power through-type stepper motor drive eliminates the problem of clamping failure due to electromagnet overheating, compared to the electromagnetic plus spring drive method. Extensive testing has shown that the clamp valve of this invention can still operate stably after 60 hours of continuous operation at a frequency of 30 times per minute. In contrast, the clamp valve driven by an electromagnetic plus spring has approximately a 30% probability of overheating and clamping failure under the same conditions, effectively ensuring the reliability of the clamp valve during long-term operation.

[0021] Second, by adjusting the number of input pulses, the clamping gap between the clamp head and the jacking nut can be accurately adjusted, enabling not only fluid cutoff but also precise flow rate regulation. In practical applications, for chemical production batching processes with high flow control accuracy requirements, the clamp valve of this invention can stabilize the flow control accuracy within ±0.5%, far superior to existing technologies, and can meet various high-precision flow control needs.

[0022] Third, the introduced mechanical adjustment structure, namely the jacking nut, can effectively compensate for gap adjustments, greatly facilitating system commissioning. During on-site installation and commissioning, operators do not need complex program settings or specialized equipment; they can quickly fine-tune the clamping force according to the actual situation simply by manually rotating the jacking nut. This allows the clamping valve to better adapt to different working environments and fluid media, significantly shortening commissioning time and improving work efficiency. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a through-type stepper motor driven flexible hose clamp valve structure according to the present invention.

[0024] Figure 2 This is an exploded structural diagram of a through-type stepper motor driven flexible hose clamp valve according to the present invention.

[0025] in, Figure 1 and Figure 2 The correspondence between the reference numerals and component names in the attached drawings is as follows: 1-through stepper motor, 2-pipe clamping head, 3-connecting flange, 4-cylinder body, 5-top pipe nut, 6-drive control board, 7-rear clamping shaft, 8-baffle plate, 9-protective cover. Detailed Implementation

[0026] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] The following are specific implementation cases and appendices. Figure 1 and attached Figure 2 The present invention will be further described below, but the present invention is not limited to these embodiments.

[0028] A through-type stepper motor driven hose clamp valve structure includes a through-type stepper motor 1, a clamp head 2, a cylinder 4, a top tube nut 5, and a drive control board 6. The through-type stepper motor 1 is used to drive the clamp head 2 to reciprocate within the cylinder 4 to achieve the opening and closing function of two branches. The drive control board 6 is used to adjust the number of input pulses to change the stroke of the clamp head 2, thereby changing the gap between the clamp head 2 and the top tube nut 5 to adjust the clamping force. The top tube nut 5 is used to manually adjust its front and rear positions to readjust the gap.

[0029] In addition, the through-type stepper motor 1 is connected to the clamp head 2 through a transmission mechanism, which includes a lead screw and nut mechanism or a gear and rack mechanism.

[0030] During actual installation, first, the cylinder 4 is fixedly installed in a suitable position to ensure its stability. Then, the through-type stepper motor 1 is installed at one end of the cylinder 4, so that the output shaft of the stepper motor 1 is accurately connected to the transmission mechanism inside the cylinder 4 to ensure the accuracy of power transmission. Next, the pipe clamping head 2 is installed on the transmission mechanism, so that the pipe clamping head 2 can freely perform reciprocating linear motion inside the cylinder 4.

[0031] Next, screw the jacking nut 5 into the other end of the cylinder 4 through the thread, ensuring a tight threaded connection and that the jacking nut 5 can rotate and move smoothly. Finally, install the drive control board 6 at a suitable position on the outside of the cylinder 4, and connect the drive control board 6 to the stepper motor 1 through wires to complete the circuit construction.

[0032] The part of the clamp head 2 that contacts the hose has an arc-shaped structure.

[0033] The cylinder 4 is made of aluminum alloy and is used to guide and support the movement of the clamping head 2.

[0034] The drive control board 6 integrates a microprocessor, a driver chip, and a power module, which is used to receive external control signals and generate corresponding pulse signals to control the operation of the stepper motor.

[0035] The jacking nut 5 is connected to the cylinder 4 by a high-precision thread, and the thread precision meets the requirements for fine adjustment of clamping force.

[0036] In addition, during use, when it is necessary to control the flow of fluid or adjust the flow rate, the operator can send control signals to the drive control board 6 through external devices (such as control panels, computers, etc.) according to actual needs. After receiving the signal, the microprocessor of the drive control board 6 generates a corresponding number of pulse signals according to the preset program. After being amplified and converted by the drive chip, the pulse signals drive the stepper motor 1 to run.

[0037] Stepper motor 1 drives the clamping head 2 to move inside the cylinder 4 through the transmission mechanism, changing the gap between the clamping head 2 and the top pipe nut 5, thereby controlling the degree of compression of the hose and achieving the purpose of cutting off the fluid or regulating the flow.

[0038] The inner cavity of the cylinder 4 is fitted with a rear clamping shaft 7 for abutting the clamping head.

[0039] A baffle 8 is embedded on the side of the clamping head near the through stepper motor.

[0040] The drive control board 6 is externally fitted with a protective cover 9 that is fixed to the through-type stepper motor and the connecting flange 3.

[0041] Furthermore, if fine-tuning of the clamping force is required during use, or during system installation and commissioning, operators can use tools such as wrenches to rotate the jacking nut 5. By rotating the jacking nut 5, its axial position on the cylinder 4 is changed, thereby adjusting the gap between the clamping head 2 and the jacking nut 5, achieving manual adjustment of the clamping force, and enabling the clamping valve to better adapt to different working conditions and fluid control requirements.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A through-type stepper motor driven flexible hose clamp valve structure, characterized in that: The device includes a through-type stepper motor, a pipe clamping head, a cylinder, a jacking nut, a drive control board, a clamping head, and a connecting flange. The through-type stepper motor drives the pipe clamping head to reciprocate within the cylinder. The drive control board adjusts the number of input pulses to change the stroke of the pipe clamping head, thereby changing the gap between the pipe clamping head and the jacking nut. The jacking nut is used to manually adjust its front and rear positions to readjust the gap.

2. The through-type stepper motor driven flexible hose clamp valve structure according to claim 1, characterized in that: The through-type stepper motor is connected to the clamp head through a transmission mechanism, which is a lead screw and nut mechanism.

3. The through-type stepper motor driven flexible hose clamp valve structure according to claim 1, characterized in that: The part of the clamp head that contacts the hose has an arc-shaped structure.

4. The through-type stepper motor driven flexible hose clamp valve structure according to claim 1, characterized in that: The cylinder is made of aluminum alloy and is used to guide and support the movement of the clamping head.

5. The through-type stepper motor driven flexible hose clamp valve structure according to claim 1, characterized in that: The drive control board integrates a microprocessor, a drive chip, and a power module, which are used to receive external control signals and generate corresponding pulse signals to control the operation of the stepper motor.

6. The through-type stepper motor driven flexible hose clamp valve structure according to claim 1, characterized in that: The jacking nut is connected to the cylinder via a high-precision thread, the thread precision of which meets the requirements for fine-tuning of clamping force.

7. The through-type stepper motor driven flexible hose clamp valve structure according to claim 1, characterized in that: The inner cavity of the cylinder is fitted with a rear clamping shaft for abutting the clamping head.

8. The through-type stepper motor driven flexible hose clamp valve structure according to claim 1, characterized in that: A baffle is embedded on the side of the clamping head near the through stepper motor.

9. The through-type stepper motor driven flexible hose clamp valve structure according to claim 1, characterized in that: The drive control board is fitted with a protective cover that is fixed to the through-type stepper motor and the connecting flange.

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