Pinch valve capable of adjusting clamping gap

Abstract

The utility model discloses a pinch valve with an adjustable clamping gap, which comprises a valve body, an infrared sensor and a clamping part, the upper end of the valve body is provided with a containing groove for containing a hose, the inner wall of the containing groove is provided with a containing cavity, the containing cavity is internally provided with the infrared sensor for detecting the outer diameter of the hose in the containing groove, and the infrared sensor is connected with the clamping part. The transmitting end and the receiving end of the infrared sensor are oppositely arranged on the outer wall of the hose, the clamping part is located in the valve body, and one end of the clamping part penetrates through the valve body and then is located in the containing groove. According to the pipe clamping valve capable of adjusting the clamping gap, the infrared sensor used for detecting the outer diameter of the hose in the containing groove is arranged in the valve body, the thickness of a pipeline can be automatically detected, and therefore the reserved gap after the hose is clamped can be adjusted according to the size of the hose, and reliable clamping and softness are achieved, and the hose is not damaged.

Description

Technical Field

[0001] This utility model relates to the field of clamp valve technology, and in particular to a clamp valve with adjustable clamping gap. Background Technology

[0002] In the field of fluid control, pinch valves, as non-contact fluid control devices, are widely used in various industries, including medical, bioprocessing, biotechnology, pharmaceuticals, chemicals, industry, and food and beverage, due to their advantages such as effectively avoiding media contamination and ease of cleaning and maintenance. Particularly in the life sciences field, pinch valves play a crucial role in blood purification equipment. They are not only a key component ensuring the safety of blood purification but also improve the continuity and effectiveness of treatment through precise control of blood flow and auxiliary emergency treatment functions.

[0003] Traditional pinch valves typically use electromagnetic actuation to control the opening and closing of hoses. However, traditional electromagnetic pinch valves have relatively limited functionality, only capable of simple on / off operations, and cannot be flexibly adjusted according to the hose diameter. When dealing with hoses of different diameters, if the clamping force remains constant, the following problems may occur: for thicker hoses, repeated closing operations may cause deformation or even breakage due to excessive clamping force, severely affecting the hose's lifespan and system safety; while for thinner hoses, insufficient clamping force may lead to poor sealing and leakage, failing to meet the high-precision requirements of fluid control.

[0004] In summary, the present invention aims to solve the problems of traditional electromagnetic pinch valves, such as limited functionality and insufficient regulating capacity. Utility Model Content

[0005] In order to solve the above-mentioned problems in the existing technology, the purpose of this utility model is to provide a clamping valve with adjustable clamping gap, which can automatically detect the diameter of the pipeline and adjust the retention gap after clamping according to the wall thickness of the hose, so as to achieve reliable clamping and gentle clamping without damaging the hose.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a clamping valve with adjustable clamping gap, comprising:

[0007] The valve body has a receiving groove at its upper end for accommodating a flexible hose. The inner wall of the receiving groove has a receiving cavity. An infrared sensor for detecting the outer diameter of the flexible hose inside the receiving cavity is installed inside the receiving cavity. The transmitting end and receiving end of the infrared sensor are arranged opposite to each other on the outside of the flexible hose.

[0008] The clamping part is located inside the valve body, with one end of the clamping part penetrating through the valve body and located in the receiving groove.

[0009] As a further improvement of this utility model, the receiving groove is inverted U-shape, and the transmitting end and receiving end of the infrared sensor are respectively arranged in the receiving cavity at the upper end and the receiving cavity at the lower end of the receiving groove.

[0010] As a further improvement of this utility model, the clamping part includes a clamping block and a clamping plate connected to the top of the clamping block, and the clamping plate is arranged parallel to the opening direction of the receiving groove.

[0011] As a further improvement of this utility model, the top of the clamping plate is provided with a rounded chamfer.

[0012] As a further improvement of this utility model, it also includes a drive mechanism for driving the clamping assembly to move. The drive mechanism includes a linear motor and a push rod. One end of the push rod is connected to the bottom of the clamping block, and the other end of the push rod is connected to the mover of the linear motor.

[0013] When the mover of the linear motor moves, it drives the push rod connected to it to move synchronously in a linear motion, thereby causing the clamping part to move along the length of the valve body.

[0014] As a further improvement of this utility model, it also includes a limiting component, which includes a limiting block and an elastic element connected to the limiting block. One end of the limiting block passes through the top opening of the valve body and is located on one side of the inlet of the receiving groove, and the other end is connected to the elastic element. The other end of the elastic element is fixed to the bottom inner wall of the valve body.

[0015] As a further improvement of this utility model, it also includes a connecting seat, which is fixed on the lower peripheral wall of the valve body.

[0016] Compared with the prior art, this utility model has the following advantages:

[0017] This utility model discloses a clamping valve with adjustable clamping gap. By installing an infrared sensor in the valve body to detect the outer diameter of the hose in the receiving groove, the valve can automatically detect the thickness of the pipe. Thus, the clamping gap can be adjusted according to the size of the hose, achieving both reliable clamping and gentle clamping without damaging the hose. Attached Figure Description

[0018] Fig. 1 This is a schematic diagram of the overall structure of the adjustable clamping gap clamping valve of this utility model;

[0019] Fig. 2 This is a schematic diagram of the internal structure of the clamp valve body of the adjustable clamping gap of this utility model;

[0020] Fig. 3 This is a schematic diagram of the clamping part of the adjustable clamping gap clamping valve of this utility model. Detailed Implementation

[0021] 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. Example 1

[0022] Figs. 1 to 3 The diagram shown is a structural schematic of one embodiment of a clamping valve with adjustable clamping gap according to the present invention. Its main body includes a valve body 100, an infrared sensor 200, a clamping part 300, and a driving mechanism 400.

[0023] The upper end of the valve body 100 is provided with a receiving groove 110 for accommodating a flexible hose. The inner wall of the receiving groove 110 is provided with a receiving cavity. An infrared sensor 200 for detecting the outer diameter of the flexible hose within the receiving groove 110 is disposed within the receiving cavity, with the transmitting and receiving ends of the infrared sensor 200 positioned opposite each other on the outer side of the flexible hose. In this embodiment, the receiving groove 110 is arranged radially along the valve body 100, forming an inverted U-shape adapted to the flexible hose. The transmitting and receiving ends of the infrared sensor 200 are respectively disposed within the receiving cavities at the upper and lower ends of the receiving groove 110, i.e., on the inner walls of the two free ends of the U-shaped receiving groove 110. When measuring the outer diameter of the flexible hose, the transmitting end of the infrared sensor 200 emits infrared light towards the surface of the flexible hose, and the receiving end receives the infrared signal reflected back from the surface of the flexible hose, thereby detecting the outer diameter of the flexible hose. Then, the infrared sensor 200 transmits the detected outer diameter information of the flexible hose to the device control unit. The control unit calculates the required clamping force according to a preset algorithm and controls the drive mechanism 400 to operate.

[0024] A clamping part 300 is located inside the valve body 100 and is used to clamp the hose. One end of the clamping part 300 passes through the valve body 100 and is located inside the receiving groove 110. The clamping part 300 includes a clamping block 310 and a clamping plate 320 connected to the top of the clamping block 310, and the clamping plate 320 is arranged parallel to the opening direction of the receiving groove 110. Preferably, in this embodiment, in order to reduce damage to the hose, the top of the clamping plate 320 is provided with a rounded chamfer.

[0025] The drive mechanism 400 is used to drive the clamping part 300 to move. The drive mechanism 400 includes a linear motor 410 and a push rod 420. One end of the push rod 420 is connected to the bottom of the clamping block 310, and the other end of the push rod 420 is connected to the mover of the linear motor 410. When the mover of the linear motor 410 moves, it drives the push rod 420 connected to it to move synchronously in a linear motion, thereby driving the clamping part 300 to move along the length direction of the valve body 100. The control unit of the equipment precisely controls the magnetic field strength and direction changes generated by the linear motor 410 by controlling parameters such as the magnitude, direction, and frequency of the current input to the stator of the linear motor 410. This enables precise control of the displacement, speed, and acceleration of the mover, thereby adjusting the up-and-down movement of the push rod 420 connected to the mover. Consequently, the clamping force of the clamping part 300 on the hose can be automatically adjusted according to the actual diameter of the hose, achieving precise clamping and release of the hose. This ensures that the hose is neither damaged due to excessive force nor leaked due to insufficient force during clamping, thus achieving precise clamping and release of the hose.

[0026] Combination Figs. 1 to 3 The adjustable clamping gap clamping valve of this embodiment is used as follows: When the hose is placed in the receiving groove 110, the infrared sensor 200 transmits the detected outer diameter size information of the hose to the control unit of the device. The control unit adjusts the clamping gap of the hose by controlling the drive mechanism 400, thereby achieving precise clamping of the hose. Example 2

[0027] like Fig. 1 and Fig. 2 As shown, in Embodiment 2, based on Embodiment 1, a limiting component 500 is provided to prevent the hose from slipping off the clamping part 200 when the clamping part 300 clamps the hose. The limiting component 500 includes a limiting block 510 and an elastic member 520 connected to the limiting block 510. One end of the limiting block 510 passes through the top opening of the valve body 100 and is located on one side of the inlet of the receiving groove 110, while the other end is connected to the elastic member 520. The other end of the elastic member 520 is fixed to the bottom inner wall of the valve body 100. When the equipment is in use, the elastic element 520 is in its initial state, and the top of the limiting block 510 abuts against the top inner wall of the receiving groove 110. At this time, the limiting block 510 seals the notch of the receiving groove 110, and the pipeline is restricted within the receiving groove 110 to prevent the pipeline from slipping off the clamping part 300. When it is necessary to remove the pipeline from the receiving groove 110, press down on the top of the limiting block 510. At this time, the elastic element 520 is in a compressed state, and the top of the limiting block 510 is flush with the bottom inner wall of the receiving groove 110. At this time, the pipeline can be removed from the receiving groove 110.

[0028] Preferably, in this embodiment, a connecting seat 600 is also included. The connecting seat 600 is fixed on the lower peripheral wall of the valve body 100 and is used for connection with the host device.

[0029] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A clamping valve with adjustable clamping gap, characterized in that, include: The valve body (100) has a receiving groove (110) at its upper end for accommodating a hose. The inner wall of the receiving groove (110) has a receiving cavity. An infrared sensor (200) for detecting the outer diameter of the hose in the receiving groove (110) is provided in the receiving cavity. The transmitting end and receiving end of the infrared sensor (200) are arranged opposite to each other on the outside of the hose. The clamping part (300) is located inside the valve body (100), and one end of the clamping part (300) passes through the valve body (100) and is located in the receiving groove (110).

2. The adjustable clamping gap clamping valve according to claim 1, characterized in that: The receiving groove (110) is in the shape of an inverted U, and the transmitting end and receiving end of the infrared sensor (200) are respectively located in the receiving cavity at the upper end and the receiving cavity at the lower end of the receiving groove (110).

3. The adjustable clamping gap clamping valve according to claim 1, characterized in that: The clamping part (300) includes a clamping block (310) and a clamping plate (320) connected to the top of the clamping block (310), and the clamping plate (320) is arranged parallel to the opening direction of the receiving groove (110).

4. A clamping valve with adjustable clamping gap according to claim 3, characterized in that: The top of the clamp (320) is set with a rounded chamfer.

5. A clamping valve with adjustable clamping gap according to claim 3, characterized in that: It also includes a drive mechanism (400) for driving the clamping part (300) to move. The drive mechanism (400) includes a linear motor (410) and a push rod (420). One end of the push rod (420) is connected to the bottom of the clamping block (310), and the other end of the push rod (420) is connected to the mover of the linear motor (410). When the mover of the linear motor (410) moves, it drives the push rod (420) connected to it to move synchronously in a straight line, thereby driving the clamping part (300) to move along the length direction of the valve body (100).

6. A clamping valve with adjustable clamping gap according to any one of claims 1-5, characterized in that: It also includes a limiting component (500), which includes a limiting block (510) and an elastic element (520) connected to the limiting block (510). One end of the limiting block (510) passes through the top opening of the valve body (100) and is located on one side of the inlet of the receiving groove (110). The other end is connected to the elastic element (520). The other end of the elastic element (520) is fixed to the bottom inner wall of the valve body (100).

7. A clamping valve with adjustable clamping gap according to claim 1, characterized in that: It also includes a connecting seat (600), which is fixed to the lower peripheral wall of the valve body (100).

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