A self-priming micro pinch valve pump module

Abstract

The utility model belongs to the field of hose pump provides a kind of breakable self-priming micro pinch valve pump module, including base assembly, the top surface middle part of base assembly is transversely installed with three groups of power mechanism, the rotating end of three groups power mechanism is all installed with telescopic part, the telescopic part lower end of three groups telescopic part middle part is installed with plane pressure head, two the telescopic part lower end of both sides is installed with V-shaped pressure head;The utility model can be independently accurately controlled by the displacement of three groups of power mechanism, so that the pump module can be adapted to hoses of different pipe diameters and wall thicknesses by adjusting the depth of the pressure head, solving the problem of poor adaptability of existing equipment. At the same time, based on the precise drive of brushless motor, the three pressure heads can act according to the precise peristaltic waveform sequence, achieving stable, minimally pulsatile microfluidic delivery, and having efficient self-priming starting capability, perfectly meeting the stringent requirements of medical, analytical and other fields for delivery accuracy and cleanliness.

Description

Technical Field

[0001] This utility model belongs to the field of flexible hose pumps, specifically a self-priming micro clamp pump module that can be switched on and off. Background Technology

[0002] In the fields of medical, analytical instruments, biopharmaceutical, chemical, chemical and food industries, flexible pumps are required. A flexible pump is a positive displacement pump that uses the peristaltic principle to transport fluids. The fluid is completely sealed inside the flexible tube and only contacts the inner wall of the tube, completely isolated from other parts of the pump. This makes it very suitable for transporting sterile, high-purity, corrosive or shear-sensitive fluids. It can easily transport slurries, sludge, toothpaste, paint and other fluids containing particles and fibers.

[0003] While existing hose pumps can transport fluids, their delivery is limited by the hose diameter, and they cannot be adjusted to use hoses of different diameters according to actual usage conditions, thus their adaptability needs to be improved. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a self-priming micro clamp pump module that can be switched on and off, thereby resolving the issues raised in the above technical background.

[0005] A self-priming micro-pinch pump module with on / off capability includes a base assembly. Three sets of power mechanisms are horizontally mounted on the top center of the base assembly. Each of the three sets of power mechanisms has a telescopic component mounted on its rotating end. A flat pressure head is mounted on the lower end of the telescopic component in the middle of the three sets of telescopic components, and a V-shaped pressure head is mounted on the lower end of the two telescopic components on both sides.

[0006] The power mechanism includes a fixed flange, a brushless motor is fixedly installed in the middle of the fixed flange, fixing bolts are evenly distributed on the top surface of the fixed flange, and a threaded rod is fixedly installed at the rotating end of the brushless motor.

[0007] Preferably, the base assembly includes a hose clamp, the top surface of which has three sliding cavities laterally formed in the center, and each of the three sliding cavities has several bolt holes. The front side wall of the hose clamp has a hose groove laterally formed, the bottom surface of the inner cavity of the hose groove has a first pressure groove for matching a flat pressure head, and the hose groove has second pressure grooves for matching a V-shaped pressure head on both sides of the first pressure groove.

[0008] Preferably, the telescopic component includes a cylindrical slider, the top surface of which has a threaded hole in the middle, the threaded hole being threadedly connected to a threaded rod, and limit blocks being symmetrically fixedly installed on both sides of the cylindrical slider.

[0009] Preferably, the cylindrical slider and the limiting block are slidably disposed in the sliding cavity, and the fixing flange is fixedly installed on the top surface of the hose clamp by fixing bolts.

[0010] Preferably, the top surface of the brushless motor is connected to an electrical wire.

[0011] Preferably, the planar pressure head is made of flexible rubber, and the hose clamp is made of medical-grade plastic.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This utility model allows for independent and precise control of the displacement of three sets of power mechanisms, enabling the pump module to adapt to hoses of different diameters and wall thicknesses by adjusting the pressure depth of the pressure head. This solves the problem of poor adaptability of existing equipment. At the same time, based on the precision drive of the brushless motor, the three pressure heads can move in a precise peristaltic waveform sequence to achieve stable and minimally pulsating micro-fluid delivery. It also has a highly efficient self-priming start-up capability, perfectly meeting the stringent requirements for delivery accuracy and cleanliness in medical, analytical and other fields.

[0014] 2. This utility model, through the coordinated operation of three independently controlled telescopic components and pressure heads, can simultaneously press down when needed, forming three continuous pressure-closing points on the hose. This three-point pressure-closing structure constitutes a mechanical shut-off valve, realizing the absolute shut-off of the fluid in the hose. It effectively solves the problems of fluid leakage, backflow, or siphoning that may occur when traditional hose pumps stop due to hose rebound or system pressure, significantly improving the sealing performance and safety of the equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0016] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0017] Figure 3 This is an enlarged schematic diagram of structure A of this utility model;

[0018] Figure 4 This is a schematic diagram of the base assembly structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the power mechanism structure of this utility model.

[0020] In the picture:

[0021] 1. Base assembly; 101. Hose clamp; 102. Sliding cavity; 103. Bolt hole; 104. Hose groove; 105. First pressure groove; 106. Second pressure groove;

[0022] 2. Power mechanism; 201. Fixed flange; 202. Fixing bolt; 203. Brushless motor; 204. Threaded rod;

[0023] 3. Telescopic component; 301. Cylindrical slider; 302. Limiting block; 303. Threaded hole;

[0024] 4. Flat indenter; 5. V-shaped indenter; 6. Electrical wire. Detailed Implementation

[0025] 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 used to illustrate this utility model, but should not be used to limit the scope of this utility model.

[0026] Example 1:

[0027] Reference Appendix Figure 1 To be continued Figure 5 As shown, a self-priming micro clamp pump module with on / off capability includes a base assembly 1. Three sets of power mechanisms 2 are horizontally installed in the middle of the top surface of the base assembly 1. Each of the three sets of power mechanisms 2 has a telescopic component 3 installed at its rotating end. A flat pressure head 4 is installed at the lower end of the telescopic component 3 in the middle of the three sets of telescopic components 3, and V-shaped pressure heads 5 are installed at the lower ends of the two telescopic components 3 on both sides.

[0028] The power mechanism 2 includes a fixed flange 201, a brushless motor 203 is fixedly installed in the middle of the fixed flange 201, fixed bolts 202 are evenly distributed on the top surface of the fixed flange 201, and a threaded rod 204 is fixedly installed at the rotating end of the brushless motor 203.

[0029] As can be seen from the above, the core component of the module is based on a base component 1. On the top surface of the base component 1, three identical power mechanisms 2 are installed side by side along a straight line. This side-by-side layout is the basis for realizing the subsequent coordinated extrusion action.

[0030] Each set of power mechanism 2 has a telescopic component 3 drivenly installed at the rotation output end, that is, at the end of the threaded rod 204;

[0031] The key difference lies in the actuating components at the lower ends of these three telescopic parts:

[0032] At the lower end of the telescopic component 3 located in the middle, there is a flat pressure head 4 with a flat working surface, while at the lower ends of the two telescopic components 3 on both sides, there are V-shaped pressure heads 5 with a V-shaped working surface. This configuration of pressure heads with a flat center and V-shaped sides is one of the core designs for achieving efficient fluid transport and reliable flow interception.

[0033] The power mechanism 2 consists of a fixed flange 201 that provides main support and positioning. A brushless motor 203 is fixedly installed in the central through hole of the fixed flange 201. In order to securely install the entire power mechanism on the base assembly 1, several fixing bolts 202 are evenly distributed on the top surface of the fixed flange 201. The rotating end of the brushless motor 203 extends downward and is fixedly installed with a vertical threaded rod 204. This brushless motor 203 is responsible for providing precise prime mover power.

[0034] Three independent power mechanisms 2 enable the three telescopic components 3 to be raised and lowered independently and precisely. The central flat pressure head 4 is mainly used to form a large-area effective seal, while the V-shaped pressure heads 5 on both sides are more conducive to the initial clamping and final compression of the hose. The three components work in sequence or synchronously to complete the conveying and interception functions.

[0035] Example 2:

[0036] Reference Appendix Figure 1 To be continued Figure 5 As shown, the base assembly 1 includes a hose clamp 101. Three sliding cavities 102 are laterally formed in the middle of the top surface of the hose clamp 101. Several bolt holes 103 are formed on the top surface of the three sliding cavities 102. A hose groove 104 is laterally formed on the front side wall of the hose clamp 101. A first pressing groove 105 for use with a flat pressing head 4 is formed in the middle of the bottom surface of the inner cavity of the hose groove 104. A second pressing groove 106 for use with a V-shaped pressing head 5 is formed on both sides of the first pressing groove 105 of the hose groove 104.

[0037] On the front side wall of the hose clamp 101, a continuous hose groove 104 is opened horizontally to accommodate and position the hose to be pumped. In order to achieve precise and efficient extrusion, a first pressure groove 105 matching the shape of the flat pressure head 4 is opened on the bottom surface of the inner cavity of the hose groove 104, corresponding to the position of the middle telescopic member 3. At the same time, on both sides of the first pressure groove 105, corresponding to the positions of the two telescopic members 3, two second pressure grooves 106 matching the shape of the V-shaped pressure head 5 are opened.

[0038] The hose is constrained within the hose groove 104. When the pressure head is pressed down, the hose is pressed into the corresponding pressure groove. The presence of the pressure groove restricts the lateral deformation of the hose and ensures that the pressure is concentrated and effective.

[0039] On the other hand, its shape complements the pressure head, enabling more thorough flow channel closure. Especially in the cut-off mode, the three pressure grooves work together to form three continuous pressure-closing zones, achieving absolute shut-off.

[0040] The telescopic component 3 includes a cylindrical slider 301, a threaded hole 303 is provided in the middle of the top surface of the cylindrical slider 301, the threaded hole 303 is threadedly connected to the threaded rod 204, and limit blocks 302 are symmetrically fixedly installed on both sides of the cylindrical slider 301.

[0041] On it, the internal threaded hole 303 is precisely threadedly connected to the threaded rod 204 of the power mechanism 2, thereby converting the rotational motion of the motor shaft into the linear motion of the slider itself. In order to ensure that the slider does not rotate during the lifting process and only performs vertical reciprocating motion, limit blocks 302 are symmetrically and integrally fixedly installed on both sides of the columnar slider 301.

[0042] The cylindrical slider 301 and the limiting block 302 are slidably disposed in the sliding cavity 102, and the fixed flange 201 is fixedly installed on the top surface of the hose clamp 101 by the fixing bolt 202;

[0043] This assembly relationship ensures the accuracy of power transmission. The brushless motor 203 drives the threaded rod 204 to rotate, forcing the cylindrical slider 301 to make precise linear motion under the constraint of the sliding cavity 102, thereby driving the pressure head to achieve precise squeezing and release of the hose.

[0044] The top surface of the brushless motor 203 is connected to an electrical wire 6;

[0045] On each of the brushless motors 203, an electrical wire 6 is connected to the top or side. These electrical wires 6 are bundled together and connected to an external central controller [not shown in the figure].

[0046] The electrical line 6 is used to provide power to the brushless motor 203 and transmit control signals. The external controller independently and precisely controls the start, stop, direction, speed and rotation angle of each brushless motor 203 through the electrical line 6, thereby precisely regulating the movement sequence, speed and pressing depth of the three pressure heads. This is the electrical basis for realizing complex creeping waveforms and reliable current cutting action.

[0047] The flat pressure head 4 is made of flexible rubber, and the hose clamp 101 is made of medical plastic.

[0048] The flexible rubber material (such as silicone rubber, polyurethane, etc.) has a certain degree of elasticity and wear resistance, which can provide sufficient compression force while avoiding cutting or excessive wear on the hose, thus significantly extending the service life of the hose.

[0049] In addition, the hose clamp 101, as a key structural component that indirectly contacts the fluid environment, is made of medical-grade plastic material (such as medical-grade polycarbonate PC, polypropylene PP, etc.). This material has good biocompatibility, chemical corrosion resistance and mechanical strength, and is easy to clean and disinfect, making it very suitable for medical, biopharmaceutical and other fields with extremely high hygiene requirements.

[0050] Working principle:

[0051] The external controller independently drives three brushless motors 203 via electrical line 6. The rotation of the motors drives the threaded rod 204 to rotate, which in turn causes the telescopic part 3 connected to it to produce precise vertical linear motion under the limiting constraint of the sliding cavity 102, and finally drives the pressure head at its lower end to perform the action.

[0052] In the fluid transport mode, the flat pressure head 4 in the middle and the V-shaped pressure heads 5 on both sides alternately press down and release according to the preset peristaltic waveform sequence. The flat pressure head 4 presses into the first pressure groove 105 to form the main sealing section, and the V-shaped pressure head 5 presses into the second pressure groove 106 to generate negative pressure self-priming and push the fluid forward in sequence, thereby realizing the continuous, unidirectional and micro-volume transport of fluid.

[0053] When it is necessary to stop the flow, the system switches to the fluid shut-off mode, and the three sets of telescopic components move down synchronously, so that the three pressure heads simultaneously press the hose. Through the "three-point coordinated pressure closing" mechanism, a continuous and reliable mechanical blockage is formed in the flow channel, realizing the absolute shut-off function and effectively preventing leakage and siphoning.

[0054] The entire module can adapt to hoses of different diameters by adjusting the motor's motion parameters, and has a highly efficient self-priming start capability, perfectly realizing integrated intelligent control of conveying and interception.

[0055] The embodiments of this utility model are given for the purpose of illustration and description. Although embodiments of this utility model have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the utility model. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this utility model.

Claims

1. A self-priming micro clamp pump module with on / off capability, characterized in that: Includes a base assembly (1), on which three sets of power mechanisms (2) are horizontally installed in the middle of the top surface of the base assembly (1). Each of the three sets of power mechanisms (2) has a telescopic component (3) installed at the rotating end. A flat pressure head (4) is installed at the lower end of the telescopic component (3) in the middle of the three sets of telescopic components (3), and a V-shaped pressure head (5) is installed at the lower end of the two telescopic components (3) on both sides. The power mechanism (2) includes a fixed flange (201), a brushless motor (203) is fixedly installed in the middle of the fixed flange (201), fixed bolts (202) are evenly distributed on the top surface of the fixed flange (201), and a threaded rod (204) is fixedly installed at the rotating end of the brushless motor (203).

2. The self-priming micro clamp pump module with on / off capability as described in claim 1, characterized in that: The base assembly (1) includes a hose clamp (101). The top surface of the hose clamp (101) has three sliding cavities (102) opened laterally in the middle. The top surface of the hose clamp (101) has several bolt holes (103) on each of the three sliding cavities (102). The front side wall of the hose clamp (101) has a hose groove (104) opened laterally. The bottom surface of the inner cavity of the hose groove (104) has a first pressure groove (105) for use with a matching flat pressure head (4). The hose groove (104) has a second pressure groove (106) for use with a matching V-shaped pressure head (5) on both sides of the first pressure groove (105).

3. The on / off self-priming micro clamp pump module as described in claim 2, characterized in that: The telescopic component (3) includes a cylindrical slider (301), a threaded hole (303) is provided in the middle of the top surface of the cylindrical slider (301), the threaded hole (303) is threadedly connected to the threaded rod (204), and limit blocks (302) are symmetrically fixedly installed on both sides of the cylindrical slider (301).

4. The on / off self-priming micro clamp pump module as described in claim 3, characterized in that: The columnar slider (301) and the limiting block (302) are slidably disposed in the sliding cavity (102), and the fixed flange (201) is fixedly installed on the top surface of the hose clamp (101) by the fixing bolt (202).

5. The on / off self-priming micro clamp pump module as described in claim 1, characterized in that: The top surface of the brushless motor (203) is connected to an electrical wire (6).

6. The on / off self-priming micro clamp pump module as described in claim 2, characterized in that: The flat pressure head (4) is made of flexible rubber, and the hose clamp (101) is made of medical plastic.

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