CN217206822U - Peristaltic pump - Google Patents

Abstract

The utility model relates to the technical field of peristaltic pumps, and discloses a peristaltic pump, which comprises a working matching plate, wherein a working plane is arranged on the working matching plate; the peristaltic tube is used for flowing fluid and can be elastically deformed; the peristaltic pressing plate is provided with a pressing plane and can move horizontally so that at least part of peristaltic tubes are located between the pressing plane and the working plane; the peristaltic pressing plate can be lifted so that the pressing plane presses the peristaltic tube to the side of the working plane; the backflow prevention device I and the working matching plates are distributed along the fluid flowing direction in the peristaltic tube, and the peristaltic tube can be selectively connected or disconnected. Compared with the prior art that the roller horizontally moves and extrudes fluid, the peristaltic tube between the pressing plane and the working plane is uniformly stressed, and the damage of the peristaltic tube is reduced; and no rolling exists between the peristaltic pressing plate and the peristaltic tube, so that the friction resistance is small, the service life of the peristaltic tube is prolonged, and the maintenance cost of the peristaltic pump is reduced.

Description

Peristaltic pump

Technical Field

The utility model relates to a peristaltic pump technical field especially relates to a peristaltic pump.

Background

The measurement precision requirement of the industries such as biological pharmacy, medical treatment, chemical industry and the like is higher, and a roller type peristaltic pump is mostly adopted for quantitative measurement at present.

The operating principle of the roller type peristaltic pump is as follows: the roller is controlled to rise to press the roller on the elastic hose, then the roller is controlled to move horizontally for a certain distance, and the roller extrudes the elastic hose in the horizontal moving process, so that the fluid in the elastic hose is extruded out.

The roller type peristaltic pump has the following technical problems when in operation:

(1) the matching precision between the roller and the elastic hose is not high, and the mode that the roller horizontally moves extrudes the elastic hose has the defect of nonuniform extrusion of the elastic hose, so that the service life of the elastic hose is shortened, and the maintenance cost of the peristaltic pump is increased.

(2) When the roller horizontally moves to extrude the elastic hose, the friction force between the roller and the elastic hose is large, so that the hose is easily subjected to plastic deformation, the service life of the elastic hose is shortened, the replacement period of the elastic hose is short, and the maintenance cost of the peristaltic pump is increased.

Therefore, a peristaltic pump is needed to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a peristaltic pump can prolong the life of peristaltic pipe, reduces peristaltic pump's cost of maintenance.

To achieve the purpose, the utility model adopts the following technical proposal:

a peristaltic pump, comprising:

the working matching plate is provided with a working plane;

a peristaltic tube for flowing a fluid, the peristaltic tube being elastically deformable;

the peristaltic pressing plate is provided with a pressing plane and can move horizontally so that at least part of the peristaltic tubes are positioned between the pressing plane and the working plane; the peristaltic pressing plate can be lifted so that the pressing plane presses the peristaltic tube towards the side of the working plane;

and the backflow preventer I and the working matching plate are distributed along the fluid flowing direction in the peristaltic tube and can selectively connect or disconnect the peristaltic tube.

As a preferable scheme of the peristaltic pump, the peristaltic tube includes an inlet section, a working section and an outlet section which are sequentially arranged along a fluid flow direction, and the working section is arranged opposite to the working plane;

the above peristaltic pump further comprises:

a first clamping structure for supporting and securing said inlet section;

and the second clamping structure is used for supporting and fixing the outlet section.

As a preferable aspect of the peristaltic pump, the peristaltic tube further includes:

and the backflow preventer II can selectively connect or disconnect the outlet section.

As a preferable aspect of the peristaltic pump, the backflow prevention device I and the backflow prevention device II each include:

an anti-backflow plate;

the eccentric roller, some said peristaltic hoses locate between above-mentioned anti-return board and above-mentioned eccentric roller; the eccentric roller can rotate and lift so as to selectively clamp a peristaltic tube between the anti-backflow plate and the eccentric roller to disconnect the peristaltic tube, or separate the peristaltic tube from the peristaltic tube to connect the peristaltic tube;

and an output shaft of the anti-backflow motor is in transmission connection with the eccentric roller, and the output shaft and the eccentric roller are eccentrically arranged, and the anti-backflow motor is used for driving the eccentric roller to rotate and lift.

As a preferable aspect of the peristaltic pump, the peristaltic pump further includes:

the first supporting plate is provided with a pipe inlet hole for penetrating the inlet section, and the backflow prevention device I is positioned between the first supporting plate and the first clamping structure.

As a preferable aspect of the peristaltic pump, the peristaltic pump further includes:

the second backup pad is equipped with out the tube hole in the above-mentioned second backup pad for wear to establish above-mentioned outlet section, above-mentioned backflow prevention device II is located between above-mentioned second backup pad and the above-mentioned second clamp structure.

Preferably, the inlet section is higher than the working section, and the outlet section is not higher than the working section.

As a preferable scheme of the peristaltic pump, the peristaltic tube is provided with a transition section, two ends of the transition section are respectively connected with the inlet section and the working section, and the transition section is obliquely arranged;

the peristaltic pump further includes an angled support plate for supporting the transition section to maintain communication at the junction of the inlet section and the transition section.

In a preferred embodiment of the peristaltic pump, the peristaltic tube is provided in plural.

As a preferable embodiment of the peristaltic pump, the peristaltic pump further includes:

the linear driving assembly is used for driving the peristaltic pressing plate to horizontally reciprocate;

and the jacking driving component is used for driving the linear driving component to lift.

The utility model discloses beneficial effect:

the utility model provides a peristaltic pump, be equipped with the work plane on the work coordination board, be equipped with the press plane on the wriggling press plate, adjust the area that press plane and work plane just right through horizontal migration wriggling press plate, play the effect of the fluid volume of adjustment single pump sending, make the peristaltic pipe disconnection of work coordination board upper reaches through anti-reflux unit I, through control wriggling press plate lift, make the wriggling press plate extrude the peristaltic pipe between its and the work coordination board, realize once only pressing in place, compare prior art gyro wheel horizontal migration extrusion fluid, the peristaltic pipe atress between press plane and the work plane is even, the damage of peristaltic pipe has been reduced; and no rolling exists between the peristaltic pressing plate and the peristaltic tube, so that the frictional resistance is small, the service life of the peristaltic tube is prolonged, and the maintenance cost of the peristaltic pump is reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a peristaltic pump provided in an embodiment of the present invention;

fig. 2 is a schematic structural view of a pressing backflow prevention device provided by an embodiment of the present invention;

fig. 3 is a schematic view of a work flow provided by an embodiment of the present invention.

In the figure:

1. a peristaltic pressing plate; 2. a working mating plate;

3. a peristaltic tube; 31. an inlet section; 32. a transition section; 33. a working section; 34. an outlet section;

4. a backflow prevention device I; 41. an eccentric roller; 42. an anti-backflow plate; 43. a backflow prevention motor; 5. a backflow prevention device II;

6. a first clamping structure; 61. inclining the support plate; 7. a second clamping structure;

8. a top block; 9. a linear drive assembly; 10. a jacking driving component; 11. a first support plate; 12. a second support plate.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The prior peristaltic pump adopts a roller to press a peristaltic tube and horizontally move a certain distance so as to realize quantitative metering of fluid. But has the defects of low metering precision, short service life of a peristaltic tube and high maintenance cost of the peristaltic pump. Therefore, the embodiment provides the peristaltic pump so as to improve the metering precision of the peristaltic pump, prolong the service life of the peristaltic tube and reduce the maintenance cost of the peristaltic pump.

As shown in fig. 1, the peristaltic pump provided in this embodiment includes a peristaltic pressing plate 1, a work matching plate 2, a peristaltic tube 3, and a backflow prevention device I4, where the peristaltic tube 3 can elastically deform, the work matching plate 2 is provided with a working plane, the peristaltic pressing plate 1 is provided with a pressing plane, and the peristaltic pressing plate 1 can horizontally move so that at least a part of the working section is located between the pressing plane and the working plane; the pressing plate can be lifted to enable the pressing plane to press the peristaltic tube 3 towards the side of the working plane; backflow preventer I4 and work fitting plate 5 are distributed in sequence along the direction of fluid flow within peristaltic tube 3, and backflow preventer I4 is capable of selectively connecting or disconnecting peristaltic tube 3.

When the peristaltic pump does not work, the peristaltic pressing plate 1 is separated from the peristaltic tube 3. When the peristaltic pump is used for metering fluid, the peristaltic tube 3 is disconnected through the backflow prevention device I4, the peristaltic pressing plate 1 is controlled to move horizontally to enable at least part of the peristaltic tube 3 to be located between the pressing plane and the working plane, then the peristaltic pressing plate 1 is controlled to lift to enable the pressing plane to press the peristaltic tube towards the side where the working plane is located, and as the peristaltic tube 3 is cut off by the backflow prevention device I4 located at the upstream of the working matching plate 2, fluid in the peristaltic tube 3 flows to the outlet of the peristaltic tube 3 under the pressing action of the peristaltic pressing plate 1.

According to the peristaltic pump provided by the embodiment, the peristaltic pressing plate 1 is horizontally moved to adjust the area opposite to the pressing plane and the working plane, so that the effect of adjusting the amount of fluid pumped in a single time is achieved, the peristaltic pressing plate 1 is controlled to ascend and descend, the peristaltic pressing plate 1 is enabled to extrude the peristaltic tubes 3 located between the peristaltic pressing plate 1 and the working matching plate 2, the problem that in the prior art, accumulated errors occur in all links in the implementation process is overcome, one-time pressing in place is achieved, compared with the prior art that rollers horizontally move to extrude fluid, the peristaltic tubes 3 between the pressing plane and the working plane are uniformly stressed, and the damage to the peristaltic tubes 3 is reduced; and no rolling exists between the peristaltic pressing plate 1 and the peristaltic tube 3, so that the friction resistance is small, the service life of the peristaltic tube 3 is prolonged, and the maintenance cost of the peristaltic pump is reduced.

In this embodiment, the inlet of peristaltic tube 3 is used for connecting a fluid source, and peristaltic tube 3 comprises an inlet section 31, a working section 32 and an outlet section 34 which are arranged in sequence along the direction of fluid flow in peristaltic tube 3. Wherein, the backflow preventer I4 is arranged corresponding to the inlet section 31 and is used for connecting or disconnecting the inlet section 31.

Optionally, the peristaltic pump further comprises a peristaltic casing, the peristaltic pressing plate 1, the working matching plate 2 and the backflow prevention device I4 are arranged in the peristaltic casing, and the peristaltic casing mainly plays a role in protection. The wriggling casing includes upper end open-ended shell body and apron, and apron 15 and shell body can be dismantled the opening of connection with shutoff shell body upper end, are convenient for maintain the structure in the wriggling casing etc.. Illustratively, the work matching plate 2 and the peristaltic pressing plate 1 are both of a plate-shaped structure, the work matching plate 2 is positioned above the peristaltic pressing plate 1, and the work matching plate 2 is fixed below the cover plate.

Alternatively, in order to prevent the peristaltic tube 3 from shaking during the process of pressing the peristaltic tube 3 by the peristaltic pressing plate 1, the peristaltic tube 3 is deviated from the pressing plane and the working plane, so that the metering accuracy is affected. For this purpose, clamping structures for fixing the peristaltic tubes 3 are added, and two clamping structures are provided, respectively designated as a first clamping structure 6 and a second clamping structure 7, wherein the first clamping structure 6 is used for supporting and fixing the inlet section 31, and the second clamping structure 7 is used for supporting and fixing the outlet section 4. As for the specific structure of the clamping structure, a conventional structure for fixing the pipe may be adopted, and will not be described in detail herein.

Alternatively, as shown in fig. 2, the backflow prevention device I4 comprises a backflow prevention plate 42, an eccentric roller 41 and a backflow prevention motor 43, the peristaltic pipe 3 is located between the backflow prevention plate 42 and the eccentric roller 41, and an output shaft of the backflow prevention motor 43 is in transmission connection with the eccentric roller 41 and is used for driving the eccentric roller 41 to rotate so as to selectively press the peristaltic pipe 3 to the side of the backflow prevention plate 42 to disconnect the peristaltic pipe 3 or separate from the peristaltic pipe 3 to connect the peristaltic pipe 3. Illustratively, the output shaft of the backflow prevention motor 43 is horizontally disposed, the backflow prevention plate 42 is located above the eccentric roller 41, the backflow prevention plate 42 is fixed to the cover plate, and the inlet section 31 is located between the backflow prevention plate 42 and the eccentric roller 41.

When the peristaltic tube 3 needs to be disconnected through the backflow prevention device I4, the backflow prevention motor 43 is controlled to work, the backflow prevention motor 43 drives the eccentric roller 41 to rotate, the eccentric roller 41 rotates to press the peristaltic tube 3, and the peristaltic tube 3 is disconnected.

It should be noted that the backflow prevention device I4 may also adopt other structures, such as a switch valve, which may be a manual switch valve, or an electromagnetic switch valve.

As shown in fig. 3, in order to achieve continuity of the peristaltic pump operation, outlet section 34 of peristaltic tube 3 is optionally provided with backflow preventer II5 for selectively connecting or disconnecting peristaltic tube 3. After the primary extrusion is finished, before the peristaltic pressing plate 4 descends, the backflow prevention device II5 is used for disconnecting the outlet section 34 of the peristaltic tube 3; and then the peristaltic pressing plate 4 is controlled to descend, and the backflow prevention device I4 is controlled to act to enable the inlet section 31 of the peristaltic tube 3 to be communicated, so that the peristaltic pump can continuously pump liquid. The structure of the backflow preventer II5 is the same as that of the backflow preventer I4, and a detailed description thereof will not be repeated.

Optionally, in order to prevent peristaltic tubes 3 from being unstable when two backflow prevention devices disconnect peristaltic tubes 3, in this embodiment, the peristaltic pump further includes a first supporting plate 11, a tube inlet hole is provided on first supporting plate 11 for penetrating the inlet section, and backflow prevention device I4 is located between first supporting plate 11 and first clamping structure 6. By means of the arrangement, the stability of the peristaltic tube 3 in the process that the inlet section 31 is disconnected by the backflow prevention device I4 can be improved. The peristaltic pump further comprises a second supporting plate 12, wherein a pipe outlet hole is formed in the second supporting plate 12 and used for penetrating through the outlet section 34, and the backflow preventer II5 is located between the second supporting plate 12 and the second clamping structure 7. With this arrangement, the stability of peristaltic tube 3 during the process of opening outlet section 34 by backflow preventer II5 can be improved.

It should be noted that the first support plate 11 and the second support plate 12 in the present embodiment refer to opposite side plates of the case body.

Alternatively, the inlet section 31 is higher than the working section 33, and the fluid in the inlet section 31 can be more smoothly guided into the working section 33 by using the height difference of the positions, and the fluid can be ensured to fully fill the working section 33; alternatively, the working section 33 is not lower than the outlet section 34, and fluid is more easily discharged from the outlet section 34 during pressing.

In order to make the inlet section 31 higher than the working section 33, the first clamping structure 6 is higher than the working engagement surface of the working engagement plate 2. Due to the height difference between the inlet section 31 and the outlet section 34, a transition section 32 is present between the inlet section 31 and the outlet section 34, the transition section 32 is arranged obliquely, and both ends of the transition section 32 are respectively communicated with the inlet section 31 and the working section 33. When the transition section 32 is unsupported, the transition section 32 is in a suspended state and is recessed due to the influence of gravity, and the improper inclination angle of the transition section 32 can cause the fluid to flow abnormally at the joint of the transition section 32 and the inlet section 31, even the fluid is completely disconnected, so that the peristaltic pump cannot work normally. For this purpose, the peristaltic pump further comprises an inclined support plate 61, and the transition section 32 is supported by the inclined support plate 61 so as to maintain a communication state at the connection position of the inlet section 31 and the transition section 32.

In this embodiment, the second clamping structure 7 and the backflow preventer II5 are fixedly mounted on the same bracket, which is fixedly mounted to the housing body; the inclined support plate 61 and the first clamping structure 6 and the backflow prevention device I4 are fixedly mounted on the same bracket, which is fixed to the housing body. The angle at which inclined support plate 61 is inclined downward with respect to the horizontal plane can be determined according to the pipe diameter of peristaltic pipe 3 so that the connection position of inlet section 31 and transition section 32 is kept in a communicated state, and therefore, the specific inclination angle of inclined support plate 61 is not limited herein.

The peristaltic pump provided by the embodiment further comprises a linear driving assembly 9 for driving the horizontal reciprocating movement of the peristaltic pressing plate 1. Preferably, the linear drive assembly 9 is a motor-screw arrangement. Specifically, linear drive assembly 9 includes first support, first motor, first lead screw and first slider, the stiff end of first motor is fixed in on the first support, the output of first motor links to each other with the one end of first lead screw, the other end and the first support of first lead screw rotate to be connected, be equipped with on the first lead screw rather than threaded connection's first slider, first slider and first lead screw threaded connection, horizontal direction sliding connection is followed with first support to first slider, play and lead to and restrict pivoted effect to the removal of first slider, first slider and wriggling press platen fixed connection. The first motor works to drive the first lead screw to rotate, the first sliding block moves axially along the first lead screw, and the horizontal movement of the first sliding block drives the peristaltic pressing plate to move horizontally. It should be noted that, in other embodiments, the linear driving assembly 9 may also be a telescopic cylinder such as an oil cylinder, an air cylinder, an electric push rod, or a motor gear rack structure, or a connecting rod slider structure, and will not be described in detail herein.

The peristaltic pump provided by the embodiment further comprises a jacking driving assembly 10, and the jacking driving assembly is used for driving the linear driving assembly 9 to ascend and descend, so that the peristaltic pressing plate 1 is ascended and descended. Preferably, the jacking driving assembly 9 is a motor screw structure. Specifically, jacking drive assembly 9 includes the second support, the second motor, second lead screw and second slider, wherein, the bottom of wriggling casing is fixed with the second support, the fixed end fixed mounting of second motor is in the second support, the output of second motor links to each other with the one end of second lead screw, the other end and the second support rotation of second lead screw are connected, second slider and second lead screw threaded connection, second slider and second support are along vertical direction sliding connection, play and lead to and restrict pivoted effect to the removal of second slider, second slider and first support fixed connection. The second motor works to drive the second lead screw to rotate, the second sliding block moves axially along the second lead screw, and the first support is driven to lift by the lifting of the second sliding block, so that the peristaltic pressing plate is lifted. It should be noted that, in other embodiments, the lifting driving assembly 10 may also be a telescopic cylinder such as an oil cylinder, an air cylinder, an electric push rod, or a motor gear rack structure, or a connecting rod slider structure, and will not be described in detail herein.

In other embodiments, the output end of the linear driving assembly 9 may be fixedly connected to the jacking driving assembly 10, the output end of the jacking driving assembly 10 is directly and fixedly connected to the peristaltic pressing plate 1, the linear driving assembly 9 drives the jacking driving assembly 10 to move horizontally, and the jacking driving assembly 10 directly drives the peristaltic pressing plate 1 to move up and down.

Preferably, at least two peristaltic tubes 3 are provided, and a plurality of peristaltic tubes 3 can be simultaneously pressed at one time by one peristaltic pressing plate 1. It should be noted that the number of the peristaltic tubes 3 may be set according to actual requirements, and one peristaltic pressing plate 1 may also press one peristaltic tube 3, and one linear driving assembly 9 is used to simultaneously drive a plurality of peristaltic pressing plates 1 to simultaneously move horizontally.

The embodiment also provides a control method of the peristaltic pump, which comprises the following steps:

the peristaltic tube 3 is disconnected through the backflow prevention device I, the peristaltic pressing plate 1 separated from the peristaltic tube 3 is controlled to move horizontally, and the length of the pressing plane opposite to the working plane along the horizontal moving direction of the peristaltic tube 3 is equal to the preset length;

when the peristaltic pressing plate 1 is controlled to ascend and descend, the peristaltic pressing plate 1 presses the peristaltic tube 3, and the vertical distance between the working plane and the pressing plane is a preset distance.

The preset length is determined according to the fluid amount required to be metered. In order to improve the metering accuracy and avoid that the distance between the working plane and the pressing plane is too small, which leads to complete disconnection of the peristaltic tube 3 and thus to the expansion and deformation of the inlet section 31 under a large pressure, the minimum distance between the working plane and the pressing plane is defined, and when the distance between the working plane and the pressing plane is the minimum distance, the fluid in the inlet section 31 can flow to the outlet section 34. After a single squeeze, backflow preventer I4 was held to disconnect peristaltic tubing 3 for a preset time, and the spacing between the work plane and the press plane was held at a minimum spacing for a preset time to allow fluid within peristaltic tubing 3 between work mating plate 2 and backflow preventer I4 to flow to the outlet of peristaltic tubing 3. The predetermined distance is the minimum distance.

In addition, the foregoing is only the preferred embodiment of the present invention and the technical principles applied thereto. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims (10)

1. A peristaltic pump, comprising:

the working matching plate (2) is provided with a working plane;

the peristaltic tube (3) is used for flowing fluid, and the peristaltic tube (3) can be elastically deformed;

the peristaltic pressing plate (1) is provided with a pressing plane, and the peristaltic pressing plate (1) can move horizontally so that at least part of peristaltic tubes (3) are located between the pressing plane and the working plane; the peristaltic pressing plate (1) can be lifted to enable the pressing plane to press the peristaltic tube (3) to the side of the working plane;

the backflow preventer I (4) and the working matching plate (2) are distributed along the flow direction of the fluid in the peristaltic tube (3) and can selectively connect or disconnect the peristaltic tube (3).

2. Peristaltic pump according to claim 1, wherein said peristaltic tube (3) comprises, in succession along the direction of fluid flow, an inlet section (31), a working section (33) and an outlet section (34), said working section (33) being arranged opposite said working plane;

the peristaltic pump further comprises:

-a first clamping structure (6) for supporting and fixing said inlet section (31);

a second clamping structure (7) for supporting and securing the outlet section (34).

3. Peristaltic pump according to claim 2, characterized in that said peristaltic tube (3) further comprises:

and a backflow preventer II (5) capable of selectively connecting or disconnecting the outlet section (34).

4. Peristaltic pump according to claim 3, characterized in that said backflow prevention means I (4) and said backflow prevention means II (5) each comprise:

an anti-reflux plate (42);

an eccentric roller (41), wherein part of the peristaltic tube (3) is positioned between the anti-backflow plate (42) and the eccentric roller (41); the eccentric roller (41) can rotate and lift to selectively clamp the peristaltic tube (3) between the anti-return plate (42) and the eccentric roller (41) to disconnect the peristaltic tube (3) or separate the peristaltic tube (3) to communicate the peristaltic tube (3);

the anti-backflow motor (43), the output shaft of the anti-backflow motor (43) is in transmission connection with the eccentric roller (41), the output shaft is in eccentric arrangement with the eccentric roller (41), and the anti-backflow motor (43) is used for driving the eccentric roller (41) to rotate and lift.

5. A peristaltic pump as claimed in claim 4, further comprising:

the first supporting plate (11) is provided with a pipe inlet hole for penetrating the inlet section (31), and the backflow prevention device I (4) is located between the first supporting plate (11) and the first clamping structure (6).

6. A peristaltic pump as claimed in claim 4, further comprising:

the anti-backflow device is characterized by comprising a second supporting plate (12), wherein a pipe outlet hole is formed in the second supporting plate (12) and used for penetrating through the outlet section (34), and the anti-backflow device II (5) is located between the second supporting plate (12) and the second clamping structure (7).

7. Peristaltic pump according to claim 2, wherein said inlet section (31) is higher than said working section (33), said outlet section (34) being not higher than the working section (33).

8. Peristaltic pump according to claim 7, characterized in that said peristaltic tube (3) has a transition section (32), said transition section (32) being connected at both ends to said inlet section (31) and said working section (33), respectively, said transition section (32) being arranged obliquely;

the peristaltic pump further comprises an inclined support plate (61) for supporting the transition section (32) in communication at the location of the connection of the inlet section (31) and the transition section (32).

9. Peristaltic pump according to any one of claims 1 to 8, characterized in that said peristaltic tube (3) is provided in plurality.

10. A peristaltic pump as claimed in any one of claims 1 to 8, further comprising:

the linear driving assembly (9) is used for driving the peristaltic pressing plate (1) to horizontally reciprocate;

and the jacking driving component (10) is used for driving the linear driving component (9) to lift.

Images