A pinch valve integrated module for combined control of flow paths

Abstract

The utility model belongs to the technical field of pipe clamp device and provides a kind of pipe clamp valve integrated module of combined control flow path, comprising: cabinet, it includes upper end cover, lower end cover and damping hinge;Damping hinge is equipped between upper end cover and lower end cover, and several installation grooves are opened in upper end cover upper surface, and pipe groove is opened in lower end cover upper surface, silicon tube is arranged in pipe groove inside, and silicon tube forms several flow paths by branch, and cylindrical pin is fixed in flow path inner wall, and drive part is installed in installation groove top surface;Chuck subassembly, it includes screw rod, piston and chuck;The utility model is set to cabinet and chuck subassembly, uses silicon tube as the component of contact with medium, and the accurate extrusion positioning of cooperation chuck and flow path inner wall cylindrical pin is adopted, liquid enters valve body cavity is avoided, and the risk of dead volume residual and cross contamination is fundamentally eliminated, diaphragm is not easy to damage, make hose replacement need not to disassemble pipeline, and only need to overturn upper end cover to complete.

Description

Technical Field

[0001] This utility model belongs to the technical field of pipe clamping devices, specifically a pipe clamping valve integrated module for combined control of flow path. Background Technology

[0002] In industries such as pharmaceuticals, medical dialysis machines, food processing, brewing, dairy processing, and dialysis machine processes, precise flow control of liquids, gases, slurries, and other media within pipelines is required, while also meeting compliance requirements such as hygiene and safety, pollution-free operation, and low residue. Furthermore, in these industries, tubing is a consumable material that needs frequent replacement in scenarios such as disposable bioreactors and home dialysis, often involving flow path control requirements for large-diameter, high-hardness, and high-pressure tubing.

[0003] When traditional diaphragm valves and electromagnetic isolation valves are integrated, liquid can easily enter the valve body cavity, causing the diaphragm and valve body to have a dead volume that cannot be cleaned, resulting in cross-contamination and residue problems, affecting process accuracy, and the diaphragm is easily damaged, making it difficult to adapt to high-pressure, high-hardness, and large-diameter pipe fittings.

[0004] To address this issue, those skilled in the art have proposed an integrated clamp valve module that combines control flow paths to solve the problems raised in the background art. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides an integrated clamp valve module for combined control flow paths, which solves the problems in the prior art where liquid easily enters the valve body cavity of traditional diaphragm valves or electromagnetic isolation valves, resulting in dead volumes on the diaphragm and valve body that cannot be cleaned, leading to cross-contamination and residue.

[0006] An integrated module for a combined control flow path pinch valve includes: a housing comprising an upper end cover, a lower end cover, and a damping hinge; the damping hinge is provided between the upper end cover and the lower end cover; the upper surface of the upper end cover has a plurality of mounting grooves; the upper surface of the lower end cover has a tube groove; a silicone tube is provided inside the tube groove; the silicone tube forms a plurality of flow paths through branches; a cylindrical pin is fixed to the inner wall of the silicone tube; and a driving component is mounted on the top surface of the mounting groove.

[0007] The chuck assembly includes a lead screw, a piston, and a chuck. The output end of the drive unit is connected to the lead screw, which is threadedly engaged with the piston. The bottom surface of the piston is fixedly connected to the chuck. The position of the chuck corresponds to the silicone tube and the position of the chuck corresponds to the cylindrical pin.

[0008] Preferably, the driving component is either a brushless motor or a stepper motor.

[0009] Preferably, the driving component is a turntable, and a lead screw is connected to the bottom surface of the turntable.

[0010] Preferably, the upper end cover has rotating grooves on both sides, a positioning shaft is fixedly installed inside the rotating groove, a rotating rod is installed around the positioning shaft, and a pressure plate is threaded to one end of the rotating rod. The lower end cover has limiting grooves on both sides, and the position of the rotating rod corresponds to the limiting groove.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] This invention, through the design of a housing and a clamp assembly, uses a silicone tube as the component in contact with the medium. The precise compression and positioning between the clamp and the cylindrical pin on the inner wall of the flow path prevents liquid from entering the valve body cavity, fundamentally eliminating the risk of dead volume residue and cross-contamination. Flow path control is achieved directly through the clamp assembly acting on the silicone tube, minimizing diaphragm damage. The opening and closing structure achieved by the damping hinge and the tube groove embedding structure allow for hose replacement without disassembling complex pipelines; simply flipping the top cover is sufficient. Furthermore, the three drive methods—brushless motor, stepper motor, and manual turntable—are all adapted to pipes of different hardness and diameter through stable mechanical transmission. Combined with features such as screw self-locking and wear-resistant ring guidance, this not only meets the demands of high-pressure operating conditions but also enhances the accuracy of flow control and environmental adaptability through the proportional control of the stepper motor and the emergency adjustment capability of manual adjustment, significantly extending the device's service life and operational reliability. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the unfolded structure of this utility model;

[0015] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0016] In the picture:

[0017] 1. Upper end cover; 2. Lower end cover; 3. Damping hinge; 4. Positioning shaft; 5. Rotating rod; 6. Pressure plate; 7. Limiting groove; 8. Tube groove; 9. Silicone tube; 10. Mounting groove; 11. Brushless motor; 12. Piston; 1201. Chuck; 13. Lead screw; 14. Turntable; 15. Stepper motor; 16. Cylindrical pin. Detailed Implementation

[0018] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0019] Example 1: As shown in the attached document Figure 1 To be continued Figure 3As shown: This utility model provides an integrated module for a combined control flow path clamp valve, including a housing and a clamp assembly;

[0020] The housing includes an upper cover 1, a lower cover 2 and a damping hinge 3; the damping hinge 3 is provided between the upper cover 1 and the lower cover 2; the upper surface of the upper cover 1 is provided with several mounting grooves 10; the upper surface of the lower cover 2 is provided with a tube groove 8; the tube groove 8 forms several branches; a silicone tube 9 is provided inside the tube groove 8; the silicone tube 9 forms several flow paths through branches; a cylindrical pin 16 is fixed to the inner wall of the silicone tube 9; and a driving component is installed on the top surface of the mounting groove 10.

[0021] The chuck assembly includes a lead screw 13, a piston 12, and a chuck 1201. The output end of the drive unit is connected to the lead screw 13, which is threadedly engaged with the piston 12. The bottom surface of the piston 12 is fixedly connected to the chuck 1201, which is positioned corresponding to the silicone tube 9 and the cylindrical pin 16.

[0022] The upper end cover 1 has rotating grooves on both sides of its side walls. A positioning shaft 4 is fixedly installed inside the rotating grooves. A rotating rod 5 is installed around the positioning shaft 4. A pressure plate 6 is threaded onto one end of the rotating rod 5. The lower end cover 2 has limit grooves 7 on both sides of its side walls. The position of the rotating rod 5 corresponds to the limit groove 7. By setting the rotating grooves, space is reserved for the rotation of the positioning shaft 4. With the tightening of the pressure plate 6, the upper end cover 1 and the lower end cover 2 can be fixed. The driving component is a brushless motor 11.

[0023] First, assemble the housing. Secure one side of the damping hinge 3 to the edge of the upper cover 1 with screws, and the other side to the corresponding edge of the lower cover 2 with screws. This allows the upper cover 1 and lower cover 2 to open and close from 0-90° via the damping hinge 3, providing operational space for the subsequent installation and replacement of the silicone tube 9. Next, embed the silicone tube 9 into the groove 8 on the upper surface of the lower cover 2. The silicone tube 9 naturally forms several independent flow paths within the groove 8, and a cylindrical pin 16 is fixed at a preset position on the inner wall of each flow path. The cylindrical pin 16 is made of SS_AISI-304 material, which provides a precise extrusion positioning reference for the chuck 1201 and enhances the stability of the flow path structure. Then, install the chuck assembly and drive components. Connect the brushless motor 11 using M2 screws... The screw is fixedly installed in the mounting groove 10 on the upper surface of the upper end cover 1. The output end of the brushless motor 11 is rigidly connected to one end of the lead screw 13 through a coupling. The other end of the lead screw 13 passes through the reserved through hole of the upper end cover 1 and forms a threaded engagement with the threaded hole inside the piston 12. The bottom surface of the piston 12 is fixedly connected to the chuck 1201 by bolts. Its bottom shape is adapted to the outer contour of the silicone tube 9 and its position is precisely aligned with the cylindrical pin 16 on the inner wall of the silicone tube 9 and the flow path. At the same time, a wear-resistant ring is installed on the outer wall of the chuck 1201. The wear-resistant ring is made of PTFE material. The wear-resistant ring engages with the guide hole inside the upper end cover 1 to provide guidance for the reciprocating motion of the piston 12 and reduce wear. The bosses on both sides of the piston 12 engage with the limiting structure inside the upper end cover 1 to realize the stroke limit of the up and down movement.

[0024] Finally, the locking structure is installed. Positioning shafts 4 are fixedly installed in the rotating grooves on both sides of the upper cover 1. The middle part of the rotating rod 5 is fitted around the positioning shaft 4 through a shaft hole, allowing the rotating rod 5 to rotate freely around the positioning shaft 4. One end of the rotating rod 5 is threaded into the pressure plate 6, and the limiting grooves 7 on both sides of the lower cover 2 correspond to the position of the other end of the rotating rod 5. When it is necessary to fix the upper cover 1 and the lower cover 2, flip the upper cover 1 to the closed state, rotate the rotating rod 5 so that the other end is engaged in the limiting groove 7, and then tighten the pressure plate 6. The lever action of the rotating rod 5 tightly locks the upper cover 1 and the lower cover 2 together.

[0025] As can be seen from the above, the brushless motor 11 starts after receiving an electrical signal. Its rotational motion is converted into the linear motion of the piston 12 through the lead screw 13, which drives the chuck 1201 to move downward to squeeze the silicone tube 9 until the chuck 1201 cooperates with the cylindrical pin 16 to completely close the silicone tube 9, thereby cutting off the flow path. Conversely, the brushless motor 11 reverses and drives the chuck 1201 to move upward to disengage from the silicone tube 9, and the flow path is restored to conduction. The beneficial effects of this embodiment are as follows: the opening and closing structure achieved by the damping hinge 3, combined with the embedded design of the tube groove 8 and the silicone tube 9, allows the hose to be replaced without disassembling complex pipelines; it can be completed simply by flipping the top cover, solving the problem of cumbersome hose replacement in traditional valves. The precise matching and engagement of the clamp 1201 and the cylindrical pin 16, combined with the stable drive of the brushless motor, ensures the airtightness when the flow path is closed. Furthermore, the silicone tube 9, as a component in contact with the medium, avoids the dead volume residue and cross-contamination caused by liquid entering the valve body cavity in traditional valves. The momentary stall of the brushless motor 11 can be self-locked by the lead screw 13, preventing the clamp 1201 from loosening due to external force, thus improving the reliability of flow path control. The wear-resistant ring reduces the wear of piston movement and extends the service life of the components.

[0026] Example 2: Based on Example 1, the driving component is a stepper motor 15. The stepper motor 15 integrates a 485, analog, and pulse signal communication module. The PCBA board of the communication module is connected to the control terminal of the stepper motor 15 via a ribbon cable, and can receive PID adjustment signals from an external control system. The installation of the locking structure is the same as in Example 1. The upper and lower end covers are locked together by the cooperation of the positioning shaft 4, the rotating rod 5, the pressure plate 6, and the limiting groove 7. The stepper motor 15 is controlled by the program to run to its limit stroke, and precise positioning is achieved in conjunction with the cylindrical pin 16.

[0027] As can be seen from the above, after the stepper motor 15 receives external communication signals such as analog 0-5V signals or pulse signals, it drives the lead screw 13 to rotate through the internal reducer. The lead screw 13 drives the piston 12 to drive the chuck 1201 to move linearly. According to the signal command, the degree of compression of the silicone tube 9 by the chuck 1201 is controlled to realize the proportional adjustment of the flow path opening. For example, when receiving a pulse signal with a 50% duty cycle, the chuck 1201 moves to the semi-closed position of the silicone tube 9 to accurately control the medium flow rate. When it is necessary to fully close or open, the stroke can be accurately controlled through a preset program.

[0028] The proportional control characteristics of the stepper motor 15 solve the problem that traditional valves can only achieve on / off control and cannot accurately adjust the flow rate, making it suitable for the flow requirements of different process stages in industries such as pharmaceuticals and food processing. Diverse communication methods (485, analog, pulse) enable compatibility with different external control systems, improving the module's versatility. The bosses on both sides of the piston 12, along with the wear-resistant ring guide, ensure the stability and accuracy of the clamp movement driven by the stepper motor, reducing flow rate adjustment errors. Simultaneously, it retains the advantages of convenient hose replacement and the absence of dead volume contamination provided by the damping hinge in Embodiment 1. Furthermore, the controllability of the stepper motor allows for flexible adjustment of the clamp pressure according to the medium characteristics (such as viscosity and pressure), preventing damage caused by excessive compression of the silicone tube.

[0029] Example 3: The driving component is a turntable 14, and the bottom surface of the turntable 14 is connected to a lead screw 13. During the installation of the chuck assembly, the turntable 14 is installed in the mounting groove 10 of the upper end cover 1 through a bearing. The center of the bottom surface of the turntable 14 is connected to one end of the lead screw 13 by a key connection or threaded fixing. The other end of the lead screw 13 is threadedly engaged with the piston 12. The bottom surface of the piston 12 is fixed with a chuck 1201. A wear-resistant ring is installed on the outside of the chuck 1201 and limited by a boss. Its position corresponds to the silicone tube 9 and the cylindrical pin 16. At the same time, a lead screw bushing is sleeved at the connection end between the lead screw 13 and the turntable 14. One end of the bushing is fixed to the bottom surface of the turntable 14 by an M4 bolt, and the other end contacts the top end face of the piston 12. Snap rings are installed at the upper and lower ends of the lead screw 13 to prevent the turntable 14 from separating from the lead screw 13.

[0030] As can be seen from the above, when it is necessary to adjust the flow path, the operator directly rotates the turntable 14. The rotational motion of the turntable 14 is converted into the linear motion of the piston 12 through the lead screw 13, which drives the chuck 1201 to move up and down. When the chuck 1201 moves down, it cooperates with the cylindrical pin 16 to squeeze the silicone tube 9. By observing the scale on the edge of the turntable 14 or by feeling the feedback, the degree of squeezing of the silicone tube 9 by the chuck 1201 is controlled, so as to realize the opening and closing of the flow path or the adjustment of the flow ratio. When the chuck 1201 contacts the cylindrical pin 16, the silicone tube 9 is completely closed and the flow path is cut off.

[0031] This module enhances its emergency use capability and environmental adaptability, effectively preventing damage from excessive compression of the silicone tube; the screw bushing and snap ring design enhance the stability of manual operation, avoiding the risk of parts falling off during operation; it retains the advantage of easy hose replacement provided by the damping hinge, and manual adjustment does not require complex circuit control, reducing the module's manufacturing cost and maintenance difficulty; the cooperation between the chuck 1201 and the cylindrical pin 16 ensures the closing accuracy during manual adjustment;

[0032] Meanwhile, the silicone tube 9 independently contacts the medium, which can avoid dead volume residue and is suitable for cost-sensitive or simple operating environments, such as small food processing equipment or laboratory flow path control.

[0033] The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pinch valve integrated module for combined control flow path, characterized in that: include: The housing includes an upper end cover (1), a lower end cover (2), and a damping hinge (3); the damping hinge (3) is provided between the upper end cover (1) and the lower end cover (2); the upper surface of the upper end cover (1) is provided with several mounting grooves (10); the upper surface of the lower end cover (2) is provided with a tube groove (8); a silicone tube (9) is provided inside the tube groove (8); the silicone tube (9) forms several flow paths through branches; a cylindrical pin (16) is fixed on the inner wall of the silicone tube (9); and a driving component is installed on the top surface of the mounting groove (10). The chuck assembly includes a lead screw (13), a piston (12), and a chuck (1201). The output end of the drive unit is connected to the lead screw (13), which is threadedly engaged with the piston (12). The bottom surface of the piston (12) is fixedly connected to the chuck (1201). The position of the chuck (1201) corresponds to the silicone tube (9) and the position of the chuck (1201) corresponds to the cylindrical pin (16).

2. The integrated pinch valve module for combined control flow path as described in claim 1, characterized in that: The driving component is either a brushless motor (11) or a stepper motor (15).

3. The integrated pinch valve module for combined control flow path as described in claim 1, characterized in that: The driving component is a turntable (14), and the bottom surface of the turntable (14) is connected to a lead screw (13).

4. The integrated pinch valve module for combined control flow path as described in claim 2 or 3, characterized in that: The upper end cover (1) has rotating grooves on both sides, and a positioning shaft (4) is fixedly installed inside the rotating groove. A rotating rod (5) is installed around the positioning shaft (4). A pressure plate (6) is threaded onto one end of the rotating rod (5). The lower end cover (2) has limiting grooves (7) on both sides, and the position of the rotating rod (5) corresponds to the limiting groove (7).

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