Novel peristaltic pump structure

Abstract

The utility model relates to a novel peristaltic pump structure, and belongs to the technical field of peristaltic pumps, the novel peristaltic pump structure comprises a motor, a base, an eccentric wheel, an extrusion bearing, a wheel disc, a fastening support, a top cover and a positioning bearing, the motor is fixedly installed on the base, and a liquid inlet pipe and a liquid outlet pipe are arranged on the side portion of the fastening support in a penetrating mode; the wheel disc is arranged in the fastening support. The wheel disc is fixed in the fastening support in a sealed mode through the top cover and the base, a channel is formed between the wheel disc and the fastening support, the eccentric wheel drives the extrusion bearing to eccentrically rotate, the extrusion bearing extrudes the rotary disc, one section of the inner wall of the rotary disc is always attached to the interior of the fastening support, and the state similar to the state that a hose is extruded is formed; the working principle of the peristaltic pump is achieved, the wheel disc is long in service life, and therefore the peristaltic pump is long in service life, free of maintenance and suitable for wider working conditions, for example, the peristaltic pump is applied to occasions where maintenance cannot be achieved and the service life requirement is high.

Description

Technical Field

[0001] The present application relates to the technical field of peristaltic pumps, and in particular to a novel peristaltic pump structure. Background Art

[0002] Peristaltic pump is a liquid delivery device with controllable flow rate. It has the advantages of high delivery accuracy, strong corrosion resistance, small shear effect, simple operation and easy maintenance. Therefore, it is widely used in scientific research, pharmaceuticals, chemicals, environmental protection, beverages, food, printing and other fields.

[0003] Due to the limitations of its own structure and working principle, diaphragm pumps generally have the disadvantage of short pump tube life. Utility Model Content

[0004] The purpose of this application is to provide a new peristaltic pump structure to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present application provides a novel peristaltic pump structure adopting the following technical solutions:

[0006] A novel peristaltic pump structure includes a motor, a base, an eccentric wheel, an extrusion bearing, a wheel disc, a fastening bracket, a top cover and a positioning bearing. The motor is fixedly mounted on the base. A liquid inlet pipe and a liquid outlet pipe are provided on the side of the fastening bracket. The wheel disc is arranged inside the fastening bracket. One side of the fastening bracket is fixed to the base. The top cover is fixed to the fastening bracket. The top cover and the base seal and squeeze the two sides of the wheel disc. The positioning bearing is fixedly mounted in the top cover. The eccentric wheel is fixed to the output shaft of the motor. The inner ring of the extrusion bearing is fixed to the eccentric wheel, and the extrusion bearing is correspondingly arranged inside the wheel disc. The outer ring of the positioning bearing is fixed in the top cover. The end of the output shaft of the motor is fixed in the inner ring of the positioning bearing.

[0007] The inner ring of the fastening bracket has an annular protrusion, the liquid inlet pipe and the liquid outlet pipe are connected to the annular protrusion, and the wheel disc has annular rings on both sides, and annular grooves corresponding to the annular protrusions are formed between the annular rings on both sides. The annular rings on both sides are squeezed and fixed on the fastening bracket by the top cover and the base respectively.

[0008] Preferably, in order to increase the service life of the wheel disc, a metal skeleton is provided inside the wheel disc, and the metal skeleton has an annular block at a position corresponding to the annular groove.

[0009] Preferably, the base, the wheel disc and the top cover are respectively provided with positioning grooves, and fixing pins are passed through the positioning grooves.

[0010] The two ends of the fixing pin are connected to the base and the top cover and pass through the wheel disc, so that the wheel disc can be positioned to prevent the wheel disc from rotating.

[0011] In order to prevent dust from entering the fastening bracket, the locating bearing is a sealed bearing.

[0012] To sum up, the present application includes at least one of the following beneficial technical effects: the new peristaltic pump structure seals the wheel disc in the fastening bracket through the top cover and the base, and a channel is formed between the wheel disc and the fastening bracket. When the eccentric wheel drives the extrusion bearing to rotate eccentrically, the extrusion bearing squeezes the turntable, so that there is always a section of the inner wall of the turntable that fits the inside of the fastening bracket, forming a state similar to that of a hose being squeezed, realizing the working principle of the peristaltic pump, and utilizing the longer service life of the wheel disc, thereby increasing the life of the peristaltic pump, being maintenance-free, and adapting to a wider range of working conditions, such as applications where maintenance is not possible and high service life requirements are required. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0014] Figure 2 It is a schematic diagram of the structure in the embodiment of the present application when the top cover is hidden.

[0015] Figure 3 It is a schematic diagram of the overall explosion structure of an embodiment of the present application.

[0016] Figure 4 It is a structural diagram used to illustrate the peeling state of the wheel disc and the metal frame in the embodiment of the present application.

[0017] Explanation of the accompanying reference numerals: 1. Motor; 2. Base; 3. Eccentric wheel; 4. Extrusion bearing; 5. Wheel; 51. Annular groove; 511. Metal frame; 512. Positioning groove; 6. Fastening bracket; 61. Annular protrusion; 7. Top cover; 8. Positioning bearing; 9. Liquid inlet pipe; 10. Liquid outlet pipe; 11. Fixing pin. DETAILED DESCRIPTION

[0018] The following is combined with Figure 1-4 This application is described in further detail.

[0019] The present application discloses a novel peristaltic pump structure. Figure 1-4, including a motor 1, a base 2, an eccentric wheel 3, an extrusion bearing 4, a wheel disc 5, a fastening bracket 6, a top cover 7 and a positioning bearing 8. The motor 1 is fixedly mounted on the base 2. The side of the fastening bracket 6 is provided with a liquid inlet pipe 9 and a liquid outlet pipe 10. The wheel disc 5 is arranged inside the fastening bracket 6. One side of the fastening bracket 6 is fixed on the base 2. The top cover 7 is fixed on the fastening bracket 6. The top cover 7 and the base 2 seal and squeeze both sides of the wheel disc 5. The positioning bearing 8 is fixedly mounted in the top cover 7. The eccentric wheel 3 is fixed on the output shaft of the motor 1. The inner ring of the extrusion bearing 4 is fixed on the eccentric wheel 3, and the extrusion bearing 4 is correspondingly arranged inside the wheel disc 5. The outer ring of the positioning bearing 8 is fixed in the top cover 7. The end of the output shaft of the motor 1 is fixed in the inner ring of the positioning bearing 8. In order to prevent dust from entering the fastening bracket 6, the positioning bearing 8 is a sealed bearing.

[0020] Reference Figure 3 The inner ring of the fastening bracket 6 has an annular protrusion 61, the liquid inlet pipe 9 and the liquid outlet pipe 10 are connected to the annular protrusion 61, and the wheel 5 has annular rings on both sides. An annular groove 51 corresponding to the annular protrusion 61 is formed between the annular rings on both sides. The annular rings on both sides are squeezed and fixed on the fastening bracket 6 by the top cover 7 and the base 2 respectively. In order to ensure that the turntable has a long service life, a metal skeleton 511 is provided inside the wheel 5, and the metal skeleton 511 has an annular block at the position corresponding to the annular groove 51.

[0021] Reference Figure 2 and Figure 3 The base 2, the wheel disc 5 and the top cover 7 are respectively provided with positioning grooves 512, and a fixing pin 11 is passed through the positioning groove 512. The two ends of the fixing pin 11 are connected to the base 2 and the top cover 7, and pass through the wheel disc 5, so that the wheel disc 5 can be positioned to prevent the wheel disc 5 from rotating.

[0022] The implementation principle of a new peristaltic pump structure in the embodiment of the present application is:

[0023] When the motor 1 is working, the motor 1 shaft rotates to drive the eccentric wheel 3, and the eccentric wheel 3 drives the extrusion bearing 4 to rotate eccentrically. The extrusion bearing 4 squeezes the turntable so that there is always a section of the inner wall of the turntable that fits the inside of the fastening bracket 6, forming a state similar to that of a hose being squeezed, realizing the working principle of the peristaltic pump, and then realizing the transmission of liquid through the liquid inlet pipe 9 and the liquid outlet pipe 10. With such a structure, the turntable can have smaller resistance when it has the same thickness as the hose. Under the premise that the power of the motor 1 remains unchanged, a thicker turntable is used instead of the hose to increase its life.

[0024] By improving the flow path, which is the weakest factor affecting the life of the peristaltic pump, the life of the peristaltic pump is increased, maintenance-free, and adaptable to a wider range of working conditions, such as occasions where maintenance is not possible and high life requirements are required.

[0025] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A new peristaltic pump structure, characterized by: The invention comprises a motor (1), a base (2), an eccentric wheel (3), an extrusion bearing (4), a wheel disc (5), a fastening bracket (6), a top cover (7) and a positioning bearing (8), wherein the motor (1) is fixedly mounted on the base (2), a liquid inlet pipe (9) and a liquid outlet pipe (10) are provided through the side of the fastening bracket (6), the wheel disc (5) is arranged inside the fastening bracket (6), one side of the fastening bracket (6) is fixed on the base (2), and the top cover (7) is fixed on the fastening bracket (6). The top cover (7) and the base (2) seal and squeeze the two sides of the wheel disc (5), the locating bearing (8) is fixedly installed in the top cover (7), the eccentric wheel (3) is fixed on the output shaft of the motor (1), the inner ring of the extrusion bearing (4) is fixed on the eccentric wheel (3), and the extrusion bearing (4) is correspondingly arranged inside the wheel disc (5), the outer ring of the locating bearing (8) is fixed in the top cover (7), and the end of the output shaft of the motor (1) is fixed in the inner ring of the locating bearing (8).

2. The novel peristaltic pump structure according to claim 1 is characterized in that: The inner ring of the fastening bracket (6) has an annular protrusion (61), the liquid inlet pipe (9) and the liquid outlet pipe (10) are connected to the annular protrusion (61), and the wheel disc (5) has annular rings on both sides, and an annular groove (51) corresponding to the annular protrusion (61) is formed between the annular rings on both sides. The annular rings on both sides are squeezed and fixed on the fastening bracket (6) by the top cover (7) and the base (2) respectively.

3. The novel peristaltic pump structure according to claim 2 is characterized in that: A metal skeleton (511) is provided inside the wheel disc (5), and the metal skeleton (511) has an annular block at a position corresponding to the annular groove (51).

4. The novel peristaltic pump structure according to claim 1 is characterized in that: Positioning grooves (512) are correspondingly provided on the base (2), the wheel disc (5) and the top cover (7), and a fixing pin (11) is inserted into the positioning groove (512).

5. The novel peristaltic pump structure according to claim 1 is characterized in that: The positioning bearing (8) is a sealed bearing.

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