Dual-channel screw-type pinch valve with pipeline installation detection

Abstract

The present invention proposes a dual-channel lead screw pinch valve with pipeline installation detection. The valve comprises a mounting base, the front of which has first and second slots for mounting a hose. The first and second slots each have a mounting hole, and a first optical sensor and a second optical sensor are mounted in the corresponding mounting holes. Two mounting slots are provided on either side of the mounting base, and the four mounting slots are used to mount a first position sensor, a second position sensor, a third position sensor, and a fourth position sensor, respectively. The mounting base is also mounted with a first guide shaft and a second guide shaft. The dual-channel lead screw pinch valve utilizes two integrated DC motors and a lead screw drive to drive the valve core up and down along the guide shafts. A closed-loop feedback system, formed by limit switches, precisely controls the stroke and position. An internal optical sensor detects whether the pipelines are installed or in place, thereby controlling the opening and closing of the two pipelines.

Description

Technical Field

[0001] The invention belongs to the field of pipe valves, and in particular relates to a dual-channel screw pinch valve with pipeline installation detection. Background Art

[0002] Currently, medical equipment often uses flexible tubes in conjunction with corresponding pumps, valves, weighing devices, and other components to achieve the delivery, transfer, and quantitative control of biological fluids (such as blood). Valves control the flow of pipes, and currently, solenoid pinch valves and plug valves are commonly used in the industry. While the advantage of solenoid pinch valves is their simple structure, their disadvantage is that they are only suitable for single-channel applications. A single solenoid valve can only control the flow of a single hose, forcing many medical devices to install multiple solenoid valves, occupying valuable internal space. Furthermore, because solenoid valves use a coil to generate a magnetic field to drive the valve core, the coil must be continuously energized during operation, which not only consumes energy and increases overall power consumption, but also generates significant heat, potentially degrading or even damaging the coil. The advantage of plug valves is their simple structure and small size. Their disadvantages are the relatively complex structure and production process of the associated consumables, resulting in high costs for large-scale use. Furthermore, the medical staff operating the equipment are highly demanding, requiring training. Even more seriously, when the performance of the associated consumables degrades or becomes damaged due to quality control or misoperation, neither the equipment nor the operator can detect it in time, potentially leading to more serious consequences. Furthermore, neither solenoid valves nor plug valves can detect whether the piping is installed properly, nor can they provide clear feedback or prompts to the operator.

[0003] Therefore, there is an urgent need for a dual-channel screw pinch valve with pipeline installation detection. Summary of the Invention

[0004] The present invention provides a dual-channel screw pinch valve with pipeline installation detection, which solves the problem that common electromagnetic pinch valves in the prior art are only suitable for a single channel.

[0005] The technical solution of the present invention is implemented as follows: a dual-channel screw clamp valve with pipeline installation detection includes a fixed seat, the front of the fixed seat has a first card slot and a second card slot for installing a hose, the first card slot and the second card slot are each provided with a mounting hole, the first optical sensor and the second optical sensor are respectively installed in the corresponding mounting holes, two mounting slots are respectively provided on both sides of the fixed seat, the four mounting slots are respectively used to fix the first position sensor, the second position sensor, the third position sensor and the fourth position sensor, the fixed seat is also equipped with a first guide shaft and a second guide shaft, the first valve core has a threaded hole that matches the screw of the first screw motor, the second valve core has a threaded hole that matches the screw of the second screw motor, the first screw motor, the second screw motor, the first rolling bearing and the second rolling bearing are respectively installed on the fixed seat.

[0006] As a preferred embodiment, the screw end of the first screw motor passes through the inner ring of the first rolling bearing and extends outward, and the screw end of the second screw motor passes through the inner ring of the second rolling bearing and extends outward.

[0007] As a preferred embodiment, the first handle is mounted on the first rolling bearing, the second handle is mounted on the second rolling bearing, and the first valve core and the second valve core respectively have mounting holes for fixing linear bearings.

[0008] As a preferred embodiment, a lampshade is installed on the fixing base.

[0009] As a preferred embodiment, the lampshade is made of translucent material.

[0010] As a preferred embodiment, two LED lights serving as prompts are installed on the top of the fixing seat.

[0011] By adopting the above technical solution, the present invention has the following beneficial effects: the motor thrust generated by the lead screw is relatively large, the shut-off state is more stable, and the self-locking function eliminates the need for a holding current when the motor is in position, reducing the power load and saving energy. Even in the event of a power outage or other unexpected situation, the state remains unchanged. The lead screw pinch valve is equipped with a knob on top for manual adjustment of the valve state. An LED on the top indicates the valve's status, allowing the operator to monitor the valve's open and closed state at all times.

[0012] Compared with solenoid pinch valves, lead screw pinch valves are more stable. This is because the coil of a solenoid pinch valve must be continuously energized during operation, which not only consumes energy and increases the power consumption of the entire device, but also generates a large amount of heat, which may cause coil performance degradation or even damage. Moreover, solenoid pinch valves can only control the opening and closing status of a single pipeline, while lead screw pinch valves are more flexible. Whether increasing or reducing the number of control channels within the existing structure, it is structurally easier to implement.

[0013] Compared with plug valves, screw-type pinch valves have a significant cost advantage. To ensure accurate positioning, plug valves typically require the use of stepper motors and encoders, which results in higher hardware costs and more complex control. Screw-type pinch valves, on the other hand, use DC motors in conjunction with limit switches, making control relatively simple. Furthermore, the consumables required for plug valves also have a special structure, resulting in higher costs than conventional consumables.

[0014] This dual-channel lead screw pinch valve uses two integrated DC motors and lead screw transmissions to drive the valve core up and down along the guide shaft. A closed-loop feedback system consisting of limit switches precisely controls the stroke and position. An internal optical sensor detects whether the pipelines are installed or in place, thereby controlling the opening and closing of the two pipelines. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a schematic diagram of the overall structure of a dual-channel screw pinch valve with pipeline installation detection according to the present invention;

[0017] Figure 2 Schematic diagram of the cross-sectional structure of the dual-channel screw pinch valve with pipeline installation detection of the present invention;

[0018] Figure 3 This is a schematic diagram of the split structure of the dual-channel screw pinch valve with pipeline installation detection of the present invention;

[0019] Figure 4 Schematic diagram of the cross-sectional structure of the pinch valve of the present invention when the first clamping groove is in an open state;

[0020] Figure 5 It is a schematic cross-sectional structural diagram of the pinch valve of the present invention when the first clamping groove is in a closed state.

[0021] In the figure, 1-fixed seat; 1A-first slot; 1A′-second slot; 2-lamp cover; 3-first screw motor; 3′-second screw motor; 4-first valve core; 4′-second valve core; 5-first rolling bearing; 5′-second rolling bearing; 6-first handle; 6′-second handle; 7-linear bearing; 8-first guide shaft; 8′-second guide shaft; 9-first optical sensor; 9′-second optical sensor; 11-first position sensor; 11′-second position sensor; 12-third position sensor; 12′-fourth position sensor. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0023] Example:

[0024] like Figures 1 to 3 As shown, a dual-channel screw clamp valve with pipeline installation detection includes a fixed seat (1), a first card slot (1A) and a second card slot (1A') for installing a hose are provided on the front of the fixed seat, a mounting hole is provided in each of the first card slot (1A) and the second card slot (1A'), a first optical sensor (9) and a second optical sensor (9') are respectively installed in the corresponding mounting holes, two mounting slots are provided on each side of the fixed seat (1), and the four mounting slots are respectively used to fix a first position sensor (11), a second position sensor (11'), a third position sensor (12) and a fourth position sensor (12'), a first guide shaft (8) and a second guide shaft (8') are also installed on the fixed seat (1), a threaded hole matching the screw of the first screw motor (3) is provided on the first valve core (4), and a threaded hole matching the screw of the second valve core (4') is provided on the second valve core (4'). The invention discloses a method for manufacturing a linear bearing (7) comprising: providing a threaded hole matched with a lead screw of a second lead screw motor (3'); a first lead screw motor (3), a second lead screw motor (3'), a first rolling bearing (5) and a second rolling bearing (5') respectively mounted on a fixing seat (1); a lead screw end of the first lead screw motor (3) passes through an inner ring of the first rolling bearing (5) and extends outward; a lead screw end of the second lead screw motor (3') passes through an inner ring of the second rolling bearing (5') and extends outward; a first handle (6) is mounted on the first rolling bearing (5); a second handle (6') is mounted on the second rolling bearing (5'); mounting holes for fixing a linear bearing (7) are respectively provided on the first valve core (4) and the second valve core (4'); a lampshade (2) is mounted on the fixing seat (1); the lampshade (2) is made of a translucent material; and two LED lights for prompting are mounted on the top of the fixing seat (1).

[0025] When the first screw motor (3) and the second screw motor (3') rotate, the first valve core (4) and the second valve core (4') move linearly upward or downward under the action of the screw motor and the guide shaft to squeeze or release the hose installed between the valve core and the fixed seat (1); when the first handle (6) and the second handle (6') are rotated, the valve core can also move linearly upward or downward. The lampshade (2) is made of translucent material, which is light-transmissive but not transparent. That is, from the outside of the screw clamp valve, you can see the LED emitting light of various colors, but you cannot see the LED itself. When the first valve core (4) and the second valve core (4') trigger the corresponding limit switch, the indicator light installed on the fixed seat will display the corresponding status to remind the operator.

[0026] like Figure 4 As shown, when the first clamping slot (1A) of the clamping valve is in the open state, the third position sensor (12) of the right upper limit switch is triggered, and the installer can easily install the hose on the first clamping slot (1A) of the valve, and the LED on the right side will flash red to remind the operator to install the pipeline; when the hose is installed inside the clamping slot, the first optical sensor (9) detects the reflected signal, and the LED stops flashing.

[0027] like Figure 5 As shown, when the first screw motor (3) rotates, the first valve core (4) moves downward to the first position sensor (11) of the lower right limit switch. At this time, the first slot (1A) is in a closed state, the LED lights up green, and the liquid in the hose cannot flow.

[0028] The first clamping groove (1A) and the second clamping groove (1A') of the pinch valve can operate individually or simultaneously by controlling two screw motors.

[0029] When the power to the pinch valve is accidentally cut off, the first handle (6) and the second handle (6′) on the top of the valve can be used to rotate the screw motor. At this time, the valve core can also move up and down to close or open the first slot (1A) and the second slot (1A′) according to the operator's intention.

[0030] This dual-channel lead screw pinch valve uses two integrated DC motors and lead screw transmissions to drive the valve core up and down along the guide shaft. A closed-loop feedback system consisting of limit switches precisely controls the stroke and position. An internal optical sensor detects whether the pipelines are installed or in place, thereby controlling the opening and closing of the two pipelines.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A dual-channel screw pinch valve with pipeline installation detection, characterized in that: include: A fixing seat, the front of the fixing seat has a first card slot and a second card slot for installing a hose, the first card slot and the second card slot are each provided with a mounting hole, the first optical sensor and the second optical sensor are respectively installed in the corresponding mounting holes, two mounting slots are respectively provided on both sides of the fixing seat, the four mounting slots are respectively used to fix the first position sensor, the second position sensor, the third position sensor and the fourth position sensor, the fixing seat is also provided with a first guide shaft and a second guide shaft, the first valve core has a threaded hole that matches the screw of the first screw motor, the second valve core has a threaded hole that matches the screw of the second screw motor, the first screw motor, the second screw motor, the first rolling bearing and the second rolling bearing are respectively installed on the fixing seat, the screw end of the first screw motor passes through the inner ring of the first rolling bearing and extends outward, the screw end of the second screw motor passes through the inner ring of the second rolling bearing and extends outward.

2. The dual-channel screw pinch valve with pipeline installation detection according to claim 1, characterized in that: The first handle is mounted on the first rolling bearing, the second handle is mounted on the second rolling bearing, and the first valve core and the second valve core are respectively provided with mounting holes for fixing linear bearings.

3. The dual-channel screw pinch valve with pipeline installation detection according to claim 2, characterized in that: A lampshade is installed on the fixing seat.

4. The dual-channel screw pinch valve with pipeline installation detection according to claim 3, characterized in that: The lampshade is made of translucent material.

5. The dual-channel screw pinch valve with pipeline installation detection according to claim 4, characterized in that: Two LED lights serving as prompts are installed on the top of the fixing seat.

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