Pinch tube system, pinch tube valve and blood purification equipment

Abstract

The utility model discloses a pipe clamping system, a pipe clamping valve and blood purification equipment. The problem that a pipe in an existing pipe clamping valve is prone to deviating and falling off, and the treatment effect is affected is solved. The system comprises a clamping unit and a spinning unit. The clamping unit is provided with a pipeline and is used for pressing a flexible pipe into the pipeline and keeping the flexible pipe in the pipeline; and the spinning unit is used for rotating and pressing the flexible pipe after the flexible pipe is arranged in the pipeline, so that the flexible pipe is fixed in the clamping unit and the spinning unit. The pipeline is arranged on the clamping unit, the flexible pipe is pressed into the pipeline, the installation position of the flexible pipe is determined and fixed, meanwhile, the clamping unit and the spinning unit are matched, the flexible pipe is clamped and pressed between the clamping unit and the spinning part in an abutting mode, the extrusion force applied to the flexible pipe by the spinning part is adjusted through rotation of the spinning part, and the flexible pipe is clamped and fixed. And the flexible pipe is prevented from falling off and sliding out.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a tube clamping system, a tube clamping valve, and a blood purification device. Background Technology

[0002] Blood purification equipment has wide applications in real life, especially in the medical field, primarily for treating patients with kidney failure, liver failure, and other conditions requiring blood purification therapy. Existing clamp valves are typically designed so that the tubing is pressed into the valve and secured by friction within the valve's inner wall. This design lacks additional protective features, posing safety hazards. For example, when the blood purification equipment is operating, the tubing is subjected to high pressure. Tubing secured solely by friction is prone to displacement or even detachment from the clamp valve due to pressure fluctuations, increasing the risk of blood leakage or other fluid leaks. This not only affects treatment efficacy but may also worsen the patient's health. Alternatively, because blood purification is performed under high pressure, the tubing is susceptible to mechanical vibration and other factors, leading to tubing misalignment.

[0003] Pinch valves require a compact design to fit the space constraints of clinical environments. Adding an extra anti-dislodgement structure to existing pinch valves would increase the overall size, affecting the portability and installation flexibility of the equipment. Furthermore, blood purification equipment requires pinch valves to respond quickly during operation, promptly cutting off or restoring tubing flow. The existing pinch valve's internal friction-based tubing fixation meets the need for rapid response; adding an extra anti-dislodgement structure might increase the pinch valve's response time and operational complexity. Utility Model Content

[0004] The purpose of this invention is to provide a clamping system, clamping valve, and blood purification equipment to solve the problem that the tubing in existing clamping valves is prone to displacement and detachment, which affects the treatment effect.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] In a first aspect, the present invention provides a tube clamping system, the tube clamping system comprising: a clamping unit and a spinning unit;

[0007] The clamping unit is provided with a pipe for pressing the flexible tube into the pipe and holding the flexible tube inside;

[0008] The spinning unit is used to rotate and press the flexible tube after it is placed inside the pipe, so that the flexible tube is fixed in the clamping unit and the spinning unit.

[0009] Preferably, the system further includes a detection unit for detecting whether the spinning member presses the flexible tube tightly.

[0010] Preferably, the clamping unit includes a clamping seat, on which a first clamping part and a second clamping part are disposed, the first clamping part and the second clamping part being disposed opposite to each other on both sides of the end face of the clamping seat;

[0011] The pipe is located in the second clamping part.

[0012] Preferably, the second clamping part is provided with a through channel in the z-axis direction;

[0013] The spinning unit is provided with a rotating part and a pressing part. The rotating part is built into the clamping seat, and the pressing part is placed in the channel and rotates in the channel.

[0014] Preferably, the clamping system further includes a rotating shaft, one end of which is connected to the rotating part;

[0015] The detection unit includes a circular detection element and a photoelectric sensor. The circular detection element is fitted onto the rotating shaft, and the edge of the circular detection element is provided with a light channel for the light source to pass through.

[0016] The photoelectric sensor is used to detect light sources passing through the light channel.

[0017] Preferably, the photoelectric sensor includes a fixing part and a sensing part, and the sensing part includes a light-emitting part, a receiving part, and an optical path located between the two;

[0018] The light-emitting element and the receiving element are arranged opposite each other in the central direction of the rotation axis, and the edge of the circular detection element is embedded in the optical path.

[0019] Preferably, the system further includes a mounting plate, the clamping unit is fixed to the mounting plate by screws, and the rotating shaft passes through the mounting plate and is connected to the rotating part.

[0020] Preferably, the system further includes a mounting base, the detection unit is built into the mounting base, and the rotating shaft passes through the mounting base and connects to the circular detection element.

[0021] Secondly, this utility model provides a pinch valve, the pinch valve comprising:

[0022] The clamping system as described in any of the first aspects above;

[0023] A motor mechanism is used to control the rotation of the spinning unit and to press the tube.

[0024] Thirdly, this utility model provides a blood purification device, the device including at least one clamp valve as described in the second aspect.

[0025] Compared with the prior art, the present invention has the following advantages: The clamping unit is provided with a pipe for pressing the tube into the pipe, so that the flexible tube will not move out of the pipe even if there is slight shaking in the outside. After the flexible tube is placed in the pipe, the spinning unit is controlled to rotate and abut against the flexible tube, fixing the flexible tube between the spinning unit and the clamping unit. Through the cooperation of the clamping unit and the spinning unit, a stronger fixing force is provided for the flexible tube, ensuring that the pipeline remains stable under high pressure.

[0026] Meanwhile, by rapidly controlling the rotation direction of the spinning unit, the flexible tube can be quickly fixed or released, enabling timely cutting off or restoration of pipeline flow, thus meeting the needs of rapid response purification equipment.

[0027] This invention, through the cooperation of the clamping unit and the spinning unit, makes the installation and disassembly of the flexible tube simple and direct, reduces equipment safety hazards while meeting equipment requirements, improves equipment reliability and ease of use, and provides a strong guarantee for the safe and efficient operation of blood purification equipment. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0030] Figure 1 This is a schematic diagram of the pipe clamping system provided in Example 1;

[0031] Figure 2 This is a schematic diagram of the pipe clamping system provided in Example 1;

[0032] Figure 3 This is a schematic diagram of the pipe clamping system provided in Example 1;

[0033] Figure 4 This is a schematic diagram of the pipe clamping system provided in Example 1;

[0034] Figure 5This is a schematic diagram of the pipe clamping system provided in Example 1;

[0035] Figure 6 This is an exploded view of the pipe clamping system provided in Example 1;

[0036] Figure 7 This is an exploded view of the pipe clamping system provided in Example 1;

[0037] Figure 8 This is a schematic diagram of the pipe clamping system provided in Example 1;

[0038] Figure 9 This is a schematic diagram of the installation structure of the detection unit in the pipe clamping system provided in Example 1;

[0039] Figure 10 This is a schematic diagram of the installation structure of the detection device for the clamping system provided in Example 1;

[0040] Figure 11 A schematic diagram of the pinch valve provided in Example 2;

[0041] Figure 12 A schematic diagram of the pinch valve provided in Example 2;

[0042] Illustration: ----------------------

[0043] 1. Pipe clamping system; 2. Clamping unit; 21. Clamping seat; 22. First clamping part; 23. Second clamping part; 231. Pipe; 232. Channel; 233. Clamping component; 24. Third clamping part; 3. Spinning unit; 31. Rotating part; 32. Pressing part; 321. First end; 322. Second end; 4. Detection unit; 41. Circular detection component; 411. Optical channel; 42. Photoelectric sensor; 421. Fixing part; 422. Sensing part; 4221. Light-emitting component; 4222. Receiver; 4223. Optical path; 43. Light source; 5. Rotating shaft; 6. Mounting plate; 7. Mounting base; 8. Motor mechanism. Detailed Implementation

[0044] To make the utility model's objectives, features, and advantages more apparent and understandable, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below 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 scope of protection of the present utility model.

[0045] In the description of this utility model, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component centrally located at the same time.

[0046] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0047] Example 1

[0048] Please refer to Figure 1 and Figure 2 This utility model provides a tube clamping system, the tube clamping system 1 including a clamping unit 2 and a spinning unit 3;

[0049] The clamping unit 2 is provided with a pipe 231 for pressing the flexible tube into the pipe 231 and keeping the flexible tube inside.

[0050] The spinning unit 3 is used to rotate and press the flexible tube after it is placed inside the pipe 231, so that the flexible tube is fixed inside the clamping unit 2 and the spinning unit 3.

[0051] Specifically, the direction of the pipe 231 of the clamping unit 2 is taken as the y-axis, and the direction of the flexible tube squeezed and placed in the pipe 231 by the spinning unit 3 is taken as the x-axis. The y-axis and the x-axis are perpendicular, and an xy plane is established with the x-axis and y-axis.

[0052] The pipe 231 is an arc-shaped pipe 231, with its opening facing the spinning unit 3, and the bottom of the pipe 231 is away from the spinning unit 3 along the x-axis. Along the x-axis, the spinning unit 3 and the clamping unit 2 are spaced a certain distance apart, which is used to press the flexible tube from the gap between them into the space between the spinning unit 3 and the clamping unit 2. Then, the flexible tube is pressed into the pipe 231 from its opening, preventing the flexible tube from moving directly out from between the spinning unit 3 and the clamping unit 2 when the system shakes.

[0053] The technical solution provided in this embodiment uses a pipe 231 in the clamping unit 2 to press the tube into the pipe 231, so that the flexible tube will not move out of the pipe 231 even if there is slight shaking in the outside. After the flexible tube is placed in the pipe 231, the spinning unit 3 is controlled to rotate and abut against the flexible tube, fixing the flexible tube between the spinning unit 3 and the clamping unit 2. Through the cooperation of the clamping unit 2 and the spinning unit 3, a stronger fixing force is provided for the flexible tube, ensuring that the pipeline remains stable under high pressure.

[0054] Meanwhile, by rapidly controlling the rotation direction of the spinning unit 3, the flexible tube can be quickly fixed or released, enabling timely cutting off or restoration of pipeline flow, thus meeting the needs of rapid response purification equipment.

[0055] The combination of clamping unit 2 and spinning unit 3 makes the installation and disassembly of flexible tubes simple and direct, reducing equipment safety hazards while meeting equipment requirements, improving equipment reliability and ease of use, and providing strong protection for the safe and efficient operation of blood purification equipment.

[0056] In one embodiment, such as Figure 3 As shown, the clamping unit 2 includes a clamping seat 21, on which a first clamping part 22 and a second clamping part 23 are provided. The first clamping part 22 and the second clamping part 23 are disposed opposite to each other on both sides of the end face of the clamping seat 21.

[0057] The pipe 231 is disposed in the second clamping part 23.

[0058] Specifically, the clamping base 21 has a cylindrical structure, with the spinning unit 3 and the clamping unit 2 disposed on one end face. It is used to install the first clamping part 22, the second clamping part 23, the spinning unit 3, and to provide support. The first clamping part 22 and the second clamping part 23 are respectively installed on both sides of the end face with the y-axis as the dividing line. One end of the spinning unit 3 is embedded in the mounting base, and the other end is placed between the first clamping part 22 and the second clamping part 23. The spinning unit 3 and the first clamping part 22 and the second clamping part 23 are distributed at a certain distance. When installing the flexible tube, the flexible tube is first pressed between the first clamping part 22 and the spinning unit 3, and then both ends of the flexible tube are pressed into the pipe 231 in the second clamping part 23. The spinning unit 3 is rotated so that its length direction is aligned with the first clamping part 22, thus fixing the flexible tube between the first clamping part 22 and the spinning unit 3.

[0059] Preferably, the first clamping part 22 is a cylindrical structure with its central axis direction parallel to the z-axis direction, and its size on the xy plane is smaller than the width of the spinning unit 3 on the xy plane, so that the two ends of the flexible tube are not blocked by the spinning unit 3 and can be smoothly pressed into the pipe 231 of the second clamping part 23.

[0060] In another embodiment, the clamping unit 2 includes a clamping seat 21, on which a third clamping part 24 and a spinning unit 3 are provided. One end of the spinning unit 3 is embedded in the clamping seat 21, and the other end is exposed to the outside.

[0061] The pipe 231 is disposed in the third clamping part 24.

[0062] Before the flexible tube enters the pipe 231, in the xy plane, the length direction of the spinning unit 3 is parallel to the y-axis. After the flexible tube is pressed into the pipe 231, the system controls the spinning unit 3 to rotate, gradually bringing its length direction closer to the x-axis, and finally perpendicular to the y-axis. This structure along the length of the spinning unit 3 pushes the flexible tube towards the bottom of the pipe 231 and presses against it, thus fixing the flexible tube between the spinning unit 3 and the third clamping part 24.

[0063] In one embodiment, such as Figure 3 As shown, the second clamping part 23 is provided with a channel 232 extending through in the z-axis direction;

[0064] The spinning unit 3 is provided with a rotating part 31 and a pressing part 32. The rotating part 31 is built into the clamping seat 21 and is placed in the channel 232 and rotates in the channel 232.

[0065] Specifically, the spinning unit 3 is placed in the channel 232 of the second clamping part 23, so that the first clamping part 22 and the second clamping part 23 are more compactly distributed, making the overall structure smaller and reducing the space ratio of the structure.

[0066] The rotating part 31 is a cylindrical body, whose central axis coincides with the central axis of the clamping seat 21, and the rotating part 31 rotates around its central axis within the clamping seat 21.

[0067] One end of the pressing part 32 is connected to the rotating part 31, which is used to rotate the rotating part 31 to drive the pressing part 32 to rotate. The other end is placed in the channel 232, and rotates to a predetermined position in the channel 232 to squeeze and fix the flexible tube.

[0068] Let the depth of the pipe 231 in the x-axis direction be the first depth, and the depth of the channel 232 in the x-axis direction be the second depth, wherein the first depth is less than the second depth.

[0069] The opening of the channel 232 faces the first clamping unit 2, and the size of the opening in the y-axis direction and the second depth of the channel 232 are both greater than the size of the structure in the length direction of the pressing part 32, so that the pressing part will not collide with the second clamping part when it rotates in the channel 232.

[0070] Preferred, such as Figure 3 As shown, in the xy plane, the pressing part 32 includes a first end 321 for pressing the flexible tube and a second end 322 connected to the rotating part 31, the first end 321 and the second end 322.

[0071] When the clamping part 32 is placed between the first clamping part 22 and the second clamping part 23, when installing the flexible tube, the first end 321 is away from the first clamping part 22 and located in the channel 232 of the second clamping part 23. When the flexible tube is pressed into the first clamping part 22 and both ends of the flexible tube are pressed into the pipe 231 of the second clamping part 23, the rotating member is rotated so that the first end 321 of the clamping member rotates to the x-axis direction. The first end 321 approaches the first clamping part 22 and squeezes and clamps the flexible tube with the first clamping part 22. The second end 322 rotates into the channel 232 and approaches the second clamping part 23.

[0072] Similarly, when the flexible tube is pressed into the pipe 231 on the third clamping part 24, the rotating part 31 rotates to rotate the first end 321 to be close to the third clamping part 24 to press the flexible tube tightly, while the second end 322 moves away from the third clamping part 24.

[0073] Preferably, the second clamping part 23 extends in the x-axis direction near both ends of the first clamping member to form a clamping member 233. The clamping member 233 is disposed above the pipe 231, so that if the flexible tube detaches from the pipe 231 during the opening of the rotating unit, the clamping member blocks the flexible tube from sliding out between the spinning unit 3 and the clamping unit 2 due to large movement.

[0074] In one embodiment, such as Figures 5-10 As shown, the system also includes a detection unit 4, used to detect whether the spinning member presses the flexible tube tightly.

[0075] Specifically, the detection unit 4 detects whether the spinning member presses the flexible tube by using a photoelectric sensor, a magnetic induction sensor, and an ultrasonic sensor to detect whether the spinning unit 3 rotates to the corresponding position to press against the flexible tube.

[0076] When the flexible tube is pressed into the pipe 231 and the spinning unit 3 is activated, the detection unit 4 detects whether the structure of the spinning unit 3 in the length direction has rotated to a predetermined position to press against the flexible tube. If the structure in the length direction fails to rotate to the predetermined position, an alarm is issued to the outside.

[0077] In one embodiment, such as Figures 5-9 As shown, the clamping system 1 also includes a rotating shaft 5, one end of which is connected to the rotating part 31;

[0078] When the photoelectric sensor 42 is used for detection, the detection unit 4 includes a circular detection element 41 and a photoelectric sensor 42. The circular detection element 41 is fitted onto the rotating shaft 5, and the edge of the circular detection element 41 is provided with a light channel for the light source 43 to pass through.

[0079] The photoelectric sensor 42 is used to detect the light source 43 passing through the light channel 411.

[0080] Specifically, one end of the rotating shaft 5 is connected to the rotating part 31, which drives the entire spinning unit 3 to rotate, and the other end is fitted with the circular detection element 41. Both the circular detection element 41 and the rotating part 31 are fixed on the rotating shaft 5 and rotate with the rotation of the rotating shaft 5.

[0081] When the circular detection element 41 is installed, the length direction of the light channel 411 on the circular detection element 41 is parallel to the length direction of the clamping element. When the photoelectric sensor 42 is installed, its installation position and the predetermined position are on the same axis in the z-axis direction. This ensures that when the light channel 411 of the circular detection element 41 enters the detection area of ​​the photoelectric sensor 42, the clamping element rotates to the predetermined position, the photoelectric sensor 42 detects the light source 43 entering from the light channel 411, generates a signal to control the rotating shaft 5 to stop rotating, and stops the clamping element at the predetermined position to compress the flexible tube.

[0082] In one embodiment, such as Figure 10 As shown, the photoelectric sensor 42 is disposed between the circular detection member 41 and the spinning unit 3 in the z-axis direction. When ambient light or other light sources 43 are perpendicularly irradiated onto the side away from the photoelectric sensor 42, when the light channel 411 on the circular detection member 41 rotates into the detection range of the photoelectric sensor 42, the light beam enters from the light channel 411 and is detected by the photoelectric sensor 42, generating a signal to control the rotating shaft 5 to stop rotating, so that the clamping member stops at the preset position to press against the flexible tube located between the clamping member and the clamping part.

[0083] In another embodiment, such as Figures 5-9 As shown, the photoelectric sensor 42 includes a fixing part 421 and a sensing part 422. The sensing part 422 includes a light-emitting part 4221, a receiving part 4222, and an optical path 4223 located between the two.

[0084] The light-emitting element 4221 and the receiving element 4222 are symmetrically arranged in the central direction of the rotation axis 5, and the edge of the circular detection element 41 is embedded in the optical path 4223.

[0085] Specifically, the fixing part 421 fixes the photoelectric sensor 42 to other components to prevent the photoelectric sensor 42 from shaking and affecting the reception of the light source 43 or the position where the clamping part stops rotating.

[0086] The fixing part 421 is a cuboid, and its length direction is parallel to the y-axis direction. The sensing part 422 is fixedly connected to the middle of the fixing part 421, and the two ends of the fixing part 421 are fixed to other structures by screws.

[0087] The sensing unit 422 is integrally formed into a U-shaped groove structure. The opening of the U-shaped groove is aligned with the central axis of the circular detection element 41. The light-emitting element 4221 and the receiver 4222 are respectively installed at both ends of the U-shaped groove structure, and the edge of the circular detection element 41 is placed inside the U-shaped groove structure. When the light channel 411 on the circular detection element 41 is aligned with the light path 4223 between the light-emitting element 4221 and the receiver 4222, the light source 43 can pass through the light channel 411 through the circular detection element 41 to reach the receiver 4222. After receiving the light source 43, the receiver 4222 generates a signal to control the rotating shaft 5 to stop rotating, so that the clamping element reaches the preset position and the clamping unit 2 presses and fixes the flexible tube.

[0088] In one embodiment, such as Figures 7-9 As shown, the system also includes a mounting plate 6, the clamping unit 2 is fixed to the mounting plate 6 by screws, and the rotating shaft 5 passes through the mounting plate 6 and is connected to the rotating part 31.

[0089] Specifically, the clamping unit 2 is fixed to the mounting plate 6 by screws, while the rotating shaft 5 passes through the mounting plate 6 and is connected to the rotating part 31, ensuring a reliable connection between the clamping unit 2 and the rotating shaft 5, and facilitating maintenance and replacement of parts.

[0090] The mounting plate 6 in this embodiment provides a robust platform, which allows the clamping unit 2 and the rotating shaft 5 to be stably mounted on it, reducing vibration and displacement during movement and improving the stability and reliability of the entire system. The clamping unit 2 is fixed to the mounting plate 6 with screws, making the assembly and disassembly process simpler and faster.

[0091] In one embodiment, such as Figures 7-9 As shown, the system also includes a mounting base 7, the detection unit 4 is built into the mounting base 7, and the rotating shaft 5 passes through the mounting base 7 and is connected to the circular detection element 41.

[0092] Specifically, the central axes of the mounting base 7 and the mounting plate 6 are on the same axis, which facilitates the installation of the detection unit 4 and the spinning unit 3. At the same time, one end of the rotating shaft 5 passes through the mounting plate 6 and connects to the rotating part 31 inside the clamping seat 21, and the other end passes through the mounting base 7 and connects to the circular detection piece 41. This makes the overall structure compact, and the circular detection piece 41 and the spinning unit 3 are driven to rotate by the same rotating shaft 5, so that their rotation is at the same frequency and their rotation trajectories are the same.

[0093] Example 2

[0094] Please refer to Figure 11 and Figure 12 Based on the above embodiment 1, this embodiment provides a pinch valve, which includes any of the pinch systems 1 described in the above embodiments;

[0095] And a motor mechanism 8, used to control the rotation of the spinning unit 3 and press the tube.

[0096] Specifically, the motor mechanism 8 drives the rotating shaft 5 to rotate, which in turn drives the spinning unit 3 to rotate to a preset position, and at the same time drives the circular detection component 41 in the detection unit 4 to rotate.

[0097] Preferred, such as Figure 11 , Figure 12 As shown, the motor mechanism 8 includes a motor drive component and a motor lead screw. The motor lead screw is connected to the rotating shaft 5 and drives the rotating shaft 5 to rotate.

[0098] Preferably, the rotating shaft 5 is a motor lead screw, the top end of which is connected to the clamping unit and the bottom end is connected to the circular detection piece 41.

[0099] In one embodiment, such as Figure 11 As shown, the motor mechanism 8 is disposed between the mounting plate 6 and the mounting base 7.

[0100] In another implementation, such as Figure 12 As shown, the motor structure is located below the mounting base 7.

[0101] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A pipe clamping system, characterized in that, The tube clamping system (1) includes a clamping unit (2) and a spinning unit (3); The clamping unit (2) is provided with a pipe (231) for pressing the flexible tube into the pipe (231) and keeping the flexible tube inside; The spinning unit (3) is used to rotate and press the flexible tube after it is placed in the pipe (231), so that the flexible tube is fixed in the clamping unit (2) and the spinning unit (3).

2. The pipe clamping system according to claim 1, characterized in that, The system also includes a detection unit (4) for detecting whether the spinning unit (3) presses the flexible tube.

3. The pipe clamping system according to claim 2, characterized in that, The clamping unit (2) includes a clamping seat (21), on which a first clamping part (22) and a second clamping part (23) are provided. The first clamping part (22) and the second clamping part (23) are disposed opposite to each other on both sides of the end face of the clamping seat (21). The pipe (231) is disposed in the second clamping part (23).

4. The pipe clamping system according to claim 3, characterized in that, The second clamping part (23) is provided with a through channel (232) in the z-axis direction; The spinning unit (3) is provided with a rotating part (31) and a pressing part (32). The rotating part (31) is built into the clamping seat (21), and the pressing part (32) is placed in the channel (232) and rotates in the channel (232).

5. The pipe clamping system according to claim 4, characterized in that, The clamping system (1) also includes a rotating shaft (5), one end of which is connected to the rotating part (31); The detection unit (4) includes a circular detection element (41) and a photoelectric sensor (42). The circular detection element (41) is fitted onto the rotating shaft (5), and the edge of the circular detection element (41) is provided with a light channel (411) for the light source (43) to pass through. The photoelectric sensor (42) is used to detect the light source (43) passing through the light channel (411).

6. The pipe clamping system according to claim 5, characterized in that, The photoelectric sensor (42) includes a fixing part (421) and a sensing part (422). The sensing part (422) includes a light-emitting part (4221), a receiving part (4222), and an optical path (4223) located between the two. The light-emitting element (4221) and the receiving element (4222) are arranged opposite each other in the central direction of the rotating shaft (5), and the edge of the circular detection element (41) is embedded in the optical path (4223).

7. The pipe clamping system according to claim 6, characterized in that, The system also includes a mounting plate (6), the clamping unit (2) is fixed to the mounting plate (6) by screws, and the rotating shaft (5) passes through the mounting plate (6) and is connected to the rotating part (31).

8. The tube clamping system according to claim 7, characterized in that, The system also includes a mounting base (7), the detection unit (4) is built into the mounting base (7), and the rotating shaft (5) passes through the mounting base (7) and is connected to the circular detection element (41).

9. A pinch valve, characterized in that, The pinch valve includes: The clamping system (1) as described in any one of claims 1-8; The motor mechanism (8) is used to control the rotation of the spinning unit (3) and press the tube.

10. A blood purification device, characterized in that, It includes at least one clamp valve as shown in claim 9.

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