CN218934683U

CN218934683U - Linear peristaltic pump and perfusion culture system

Info

Publication number: CN218934683U
Application number: CN202320156415.2U
Authority: CN
Inventors: 李宁; 王玄
Original assignee: Shanghai Ruiyu Biotech Co Ltd
Current assignee: Shanghai Ruiyu Biotech Co Ltd
Priority date: 2023-01-18
Filing date: 2023-01-18
Publication date: 2023-04-28
Anticipated expiration: 2033-01-18

Abstract

The embodiment of the specification provides a linear peristaltic pump and a perfusion culture system. The linear peristaltic pump comprises a rotary driving source, a rotary structure, a supporting seat and a plurality of rollers. The rotating structure is connected with the rotating driving source, and a plurality of strip-shaped grooves which are arranged at intervals around the rotating shaft of the rotating structure are arranged on the rotating structure; the rotating structure is rotatably arranged on the supporting seat; the support seat is provided with a first guide groove which is arranged around the rotating shaft of the rotating structure; the first guide groove at least comprises a linear extrusion section; the strip-shaped groove extends along the radial direction of the rotating shaft of the rotating structure; a plurality of rollers, each roller including a main body portion and a support shaft; the supporting shafts of the rollers respectively penetrate through the plurality of strip-shaped grooves and are positioned in the first guide groove; when the rotating structure rotates, the supporting shafts of the rollers reciprocate in the strip-shaped grooves while moving along the first guide grooves. The perfusion culture system comprises a culture container and a linear peristaltic pump, wherein the linear peristaltic pump is used for conveying liquid into the culture container and/or pumping out the liquid.

Description

Linear peristaltic pump and perfusion culture system

Technical Field

The technical field of peristaltic pumps is designed in the specification, and particularly relates to a linear peristaltic pump with a simple structure and a perfusion culture system.

Background

Peristaltic pumps are a new type of fluid delivery pumps following rotor pumps, centrifugal pumps, diaphragm pumps, etc., which are just like squeezing a fluid filled tube (e.g., an elastic hose) with fingers, and as the fingers slide forward, negative pressure is created in the tube and fluid in the tube moves forward. Peristaltic pumps are currently being widely popularized and applied in various industries such as medical treatment, medicine, food, beverage, chemical industry, smelting and the like.

The conventional peristaltic pump relies on the roller component to rotationally squeeze the pipeline during operation, the pumping liquid path is generally curved, the roller component is easy to displace during rotation, and the peristaltic pump has limitations in daily use scenes.

Disclosure of Invention

One of the embodiments of the present specification provides a linear peristaltic pump comprising: a rotational drive source; the rotating structure is connected with the rotating driving source, a plurality of strip-shaped grooves are formed in the rotating structure, and the plurality of strip-shaped grooves are arranged at intervals around a rotating shaft of the rotating structure; the rotating structure is rotatably arranged on the supporting seat; the support seat is provided with a first guide groove which is arranged around the rotating shaft of the rotating structure; the first guide groove at least comprises a linear extrusion section; the strip-shaped groove extends along the radial direction of the rotating shaft of the rotating structure; a plurality of rollers respectively passing through the plurality of strip-shaped grooves and positioned in the first guide groove; when the rotating structure rotates, the rollers reciprocate in the strip-shaped grooves while moving along the first guide grooves.

In some embodiments, the rotating structure comprises a first turntable and a second turntable arranged in parallel and coaxially, the first turntable being fixed with the second turntable; a plurality of strip-shaped grooves are formed in the first rotary table and the second rotary table; the plurality of strip-shaped grooves of the first turntable are arranged in one-to-one correspondence with the plurality of strip-shaped grooves of the second turntable; the rollers are arranged between the first rotary table and the second rotary table, and the supporting shafts at the two axial ends of each roller respectively penetrate through the strip-shaped grooves correspondingly arranged on the first rotary table and the second rotary table.

In some embodiments, the distribution of the plurality of rollers satisfies the following conditional expression:

wherein θ is an included angle between the centers of two adjacent rollers and the axis of the rotating shaft of the rotating structure on the same section perpendicular to the axis of the rollers; a is the longest distance of the motion track of the roller when moving along the linear extrusion section in the first guide groove; r is the farthest distance from the axis of the rotating shaft of the rotating structure to the moving track of the roller in the first guide groove.

In some embodiments, the movement of the roller toward the rotation center of the rotating structure satisfies the following conditional expression: b is greater than or equal to

Wherein B is the longest distance of the motion track of the roller moving unidirectionally in the strip-shaped groove; r is the farthest distance from the axis of the rotating shaft of the rotating structure to the movement track of the roller in the first guide groove; a is the longest distance of the movement track of the roller when moving along the straight extrusion section in the first guide groove.

In some embodiments, the first guide slot includes a circular arc segment and a straight extrusion segment; the two ends of the arc section are respectively connected with the linear extrusion section; wherein R is the radius of the movement track of the roller when the roller moves along the arc section in the first guide groove.

In some embodiments, each of the rollers includes a main body portion and a support shaft; the supporting shafts of the rollers respectively penetrate through the strip-shaped grooves on the rotating structure; the length of the strip-shaped groove meets the following conditional expression: c is more than or equal to B+phi; wherein C is the length of the slot; Φ is the diameter of the support shaft of the roller.

In some embodiments, the linear peristaltic pump further comprises a housing; the shell is arranged on the supporting seat; the first turntable and the second turntable are both contained within the housing; the shell is provided with a second guide groove; the second guide groove is the same as the first guide groove in size and shape and is respectively positioned at two ends of the roller; the support shafts at the two axial ends of each roller are respectively positioned in the first guide groove and the second guide groove.

In some embodiments, a first pipe limit groove is formed on the shell, and the first pipe limit groove is parallel to the linear extrusion section; the linear peristaltic pump further comprises a cover body; the cover body is covered on the shell; the cover body is provided with a second pipeline limiting groove; when the cover body is covered on the shell, the second pipeline limiting groove and the first pipeline limiting groove are surrounded to form a pipeline limiting groove with a circular cross section.

In some embodiments, the linear peristaltic pump further comprises a locking structure for locking the housing and the cover.

One of the embodiments of the specification provides a perfusion culture system comprising a culture container and at least one linear peristaltic pump according to any one of the embodiments above; the linear peristaltic pump is used for delivering liquid into the culture container and/or extracting liquid.

Possible benefits of embodiments of the present description include, but are not limited to: 1) The pumping liquid path is a straight line, so that the use feasibility of various scenes in daily use is increased; 2) Compared with curve pumping in the prior art, the linear pumping can effectively avoid the axial displacement of the pipeline; 3) The pipe clamping operation is simple, the pipeline can be taken and placed at any time, and the pipeline is convenient to replace.

Drawings

The present specification will be further elucidated by way of example embodiments, which will be described in detail by means of the accompanying drawings. The embodiments are not limiting, in which like numerals represent like structures, wherein:

FIG. 1 is a schematic illustration of a linear peristaltic pump according to some embodiments of the present disclosure;

FIG. 2 is a schematic partial structural view of a linear peristaltic pump according to some embodiments of the present disclosure;

FIG. 3 is a schematic view of the structure of a support base of a linear peristaltic pump according to some embodiments of the present disclosure;

FIG. 4 is a schematic view of the rollers, tubing and support base of the linear peristaltic pump according to some embodiments of the present disclosure;

FIG. 5 is a schematic view of a rotating structure and rollers according to some embodiments of the present disclosure;

FIG. 6 is a schematic diagram of a rotational structure coupled to an output shaft of a rotational drive source according to some embodiments of the present disclosure;

FIG. 7 is a schematic diagram illustrating a distribution of a plurality of rollers over a rotating structure according to some embodiments of the present disclosure;

FIG. 8 is a schematic illustration of the dimensional relationship between a bar-type channel and a first channel according to some embodiments of the present disclosure;

FIG. 9 is a schematic structural view of a housing of a linear peristaltic pump according to some embodiments of the present disclosure;

fig. 10 is a schematic diagram of the cover and housing structure of a linear peristaltic pump according to some embodiments of the present disclosure.

In the figure: 100. a rotating structure; 101. a first turntable; 102. a second turntable; 103. a connecting pipe; 110. a bar-shaped groove; 200. a support base; 210. a first guide groove; 211. a circular arc section; 212. a straight extrusion section; 300. a roller; 310. a main body portion; 320. a support shaft; 400. a rotational drive source; 410. an output shaft; 500. a housing; 510. a second guide groove; 520. a first pipe limit groove; 600. a cover body; 610. a second pipeline limit groove; 700. a locking structure; 710. a chuck; 720. locking; 800. a pipeline.

Detailed Description

In order to more clearly illustrate the technical solutions of the embodiments of the present specification, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is apparent that the drawings in the following description are only some examples or embodiments of the present specification, and it is possible for those of ordinary skill in the art to apply the present specification to other similar situations according to the drawings without inventive effort. Unless otherwise apparent from the context of the language or otherwise specified, like reference numerals in the figures refer to like structures or operations.

It should be understood that "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, and can also be communicated with the inside of two elements. However, if other words can achieve the same purpose, the words can be replaced by other expressions.

As used in this specification and the claims, the terms "a," "an," "the," and/or "the" are not specific to a singular, but may include a plurality, unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that the steps and elements are explicitly identified, and they do not constitute an exclusive list, as other steps or elements may be included in a method or apparatus.

Peristaltic pumps are like squeezing a fluid filled hose with fingers, and as the fingers slide forward, the fluid in the tube moves forward. Peristaltic pumps are also the principle simply by replacing the finger with a roller. Fluid is pumped by alternately squeezing and releasing the flexible delivery hose. As the hose is squeezed by two fingers, negative pressure is formed in the hose along with the movement of the fingers, and liquid flows along with the negative pressure. Peristaltic pumps are being widely popularized and applied in various industries such as medical treatment, medicine, food, beverage, chemical industry, smelting and the like. However, conventional peristaltic pumps rely on roller assemblies to rotationally squeeze flexible tubing during operation, and the path of the pumped fluid is generally curvilinear, which has limitations in everyday use scenarios.

For the above reasons, some embodiments of the present application provide a linear peristaltic pump, which has excellent performance and reliability, is very widely applied, and can meet the application requirements of various processes, including various fields from experimental scientific research and analytical instruments to industrial production.

The linear peristaltic pump according to the embodiments of the present disclosure will be described in detail with reference to fig. 1 to 10. It is noted that the following examples are only for explaining the present application and are not limiting of the present application.

FIG. 1 is a schematic illustration of a linear peristaltic pump according to some embodiments of the present disclosure; FIG. 2 is a schematic partial structural view of a linear peristaltic pump according to some embodiments of the present disclosure; fig. 3 is a schematic structural view of a support base of a linear peristaltic pump according to some embodiments of the present disclosure.

In some embodiments, referring to fig. 1, 2, and 3, a linear peristaltic pump includes a rotational drive source 400, a rotational structure 100, a support base 200, and a plurality of rollers 300. The rotating structure 100 is provided with a plurality of bar-shaped grooves 110.

The rotational drive source 400 is a drive device for a linear peristaltic pump for providing a driving force to the rotating structure 100. In some embodiments, the rotary drive source 400 is the power system of the entire linear peristaltic pump and may be a high-precision motor. Different motors may be selected depending on the operating requirements of the linear peristaltic pump, for example: a fixed-rotation-speed motor, a variable-rotation-speed motor, a reversible motor, and the like. By adopting a motor with fixed rotating speed, the linear peristaltic pump can always keep constant speed during operation and use. The motor with variable rotating speed is adopted, so that the linear peristaltic pump can be rotated and regulated according to different requirements during operation and use, and the size of the conveying flow is changed. The rotary driving source 400 adopts a motor capable of rotating positively and negatively, so that the direction of liquid delivery of the linear peristaltic pump can be adjusted at any time during operation and use.

The support base 200 is a base of the linear peristaltic pump and is fixedly connected to the rotational driving source 400. In some embodiments, the support base 200 may be fixedly coupled with the rotation driving source 400 by a plurality of screws. In some embodiments, the support base 200 may be fixedly coupled to the rotation driving source 400 by four screws distributed at four corners thereof.

The rotating structure 100 is connected to the rotation driving source 400, and the rotating structure 100 is rotatably disposed on the supporting seat 200. The plurality of bar-shaped grooves 110 on the rotating structure 100 may be spaced around the rotational axis of the rotating structure 100. That is, the plurality of bar-shaped grooves 110 may be spaced apart along the rotation direction of the rotation structure 100. The support base 200 is provided with a first guide groove 210, and the first guide groove 210 is arranged around the rotating shaft of the rotating structure 100. The first guide groove 210 includes at least a straight pressing section. In some embodiments, the first guide slot 210 may include a straight extrusion section and an arcuate section. In some embodiments, the first guide channel 210 may also include a plurality of straight extrusion segments and a plurality of arcuate transition segments.

In some embodiments, as shown in fig. 3, the first guide groove 210 includes an arc section 211 and a straight extrusion section 212, and both ends of the arc section 211 are respectively connected to the straight extrusion section 212. The bar-shaped groove 110 extends in a radial direction of the rotation shaft of the rotation structure 100. In fig. 3, the center of the arc segment 211 may coincide with the rotation axis of the rotating structure 100, so that the bar-shaped groove 110 also extends along the radial direction of the arc segment 211.

In some embodiments, the number of bar grooves 110 may be equal to the number of rollers 300. In some embodiments, the number of bar-shaped grooves 110 may be greater than the number of rollers 300, and the number of rollers 300 may be installed according to actual use requirements.

As shown in fig. 4, when the rotating structure 100 rotates along its own axis, the plurality of rollers 300 are driven to move around the rotating structure 100, the plurality of rollers 300 move along the track guided by the first guide groove 210, when the rollers 300 are located in the linear extrusion section 212 of the first guide groove 210, the rollers 300 can extrude the pipe 800 under the guidance of the bar-type groove 110, and along with the movement of the rollers 300 in the linear extrusion section 212, the liquid in the pipe 800 can be pushed to flow, so that the liquid in the pipe 800 can be transported.

FIG. 5 is a schematic view of a rotating structure and rollers according to some embodiments of the present disclosure; fig. 6 is a schematic structural view showing a rotary structure connected to an output shaft of a rotary drive source according to some embodiments of the present specification.

In some embodiments, referring to fig. 5 and 6, the rotating structure 100 may include a first turntable 101 and a second turntable 102 arranged in parallel and coaxially, the first turntable 101 being fixed with the second turntable 102. The first turntable 101 and the second turntable 102 are provided with a plurality of strip-shaped grooves 110. The plurality of grooves 110 of the first turntable 101 are arranged in one-to-one correspondence with the plurality of grooves 110 of the second turntable 102. A plurality of rollers 300 are provided between the first and

second turntables

101 and 102, and support shafts 320 at both axial ends of each roller 300 pass through the bar-shaped grooves 110 correspondingly provided on the first and

second turntables

101 and 102, respectively. The first rotating disc 101 and the second rotating disc 102 have the same shape and size (including the shape, the size and the number of the strip-shaped grooves 110), are symmetrically arranged on two circumferential sides of the plurality of rollers 300, and the first rotating disc 101 and the second rotating disc 102 rotate simultaneously to drive the plurality of rollers 300 to move, so that the movement stability of the plurality of rollers 300 is ensured.

In some embodiments, the first turntable 101 and the second turntable 102 are connected through a hollow connection pipe 103, and an output shaft 410 of the rotation driving source 400 is fixed in the connection pipe 103. In some embodiments, the connection pipe 103 may be fixedly connected to the first rotating disc 101 and the second rotating disc 102 by welding, integrally molding, casting, or the like, so that the connection pipe 103 and the first rotating disc 101 and the second rotating disc 102 form a single integral part. In some embodiments, the connection pipe 103 may also be detachably and fixedly connected to the first turntable 101 and the second turntable 102 by screws.

In some embodiments, in order not to affect the movement of the plurality of rollers 300, the radius of the connection tube 103 is smaller than the distance from the center of the rotation structure 100 to the straight extrusion section 212 minus the radius of the rollers 300, i.e., the rollers 300 do not contact the connection tube 103 when the rollers 300 move in the straight extrusion section 212 and are positioned closest to the connection tube 103, ensuring smooth movement of the plurality of rollers 300.

In some embodiments, the first turntable 101 and the second turntable 102 may be fixedly connected in other manners. For example, a plurality of pins may be fixedly coupled, and the plurality of pins may be circumferentially distributed between adjacent two rollers 300. The distribution of the positions of the plurality of pins does not affect the movement of the plurality of rollers 300.

Fig. 7 is a schematic diagram illustrating a distribution of a plurality of rollers over a rotating structure according to some embodiments of the present disclosure.

During operation of the linear peristaltic pump, at least one or more rollers 300 are positioned on the linear extrusion section 212 of the first channel 210, and the tube 800 mounted in the linear peristaltic pump is extruded through the body portion 310 of the rollers 300 to ensure that liquid cannot flow back. That is, at least one other roller 300 enters the linear extrusion section 212 at or before the point at which one roller 300 exits the linear extrusion section 212. The number and distribution spacing of the rollers 300 can be reasonably designed based on the radius of the support shaft 320, the length of the straight extrusion section 212, and the radius of the circular arc section 211. In some embodiments, referring to fig. 7, the distribution of the plurality of rollers 300 satisfies the following conditional expression:

wherein θ is an included angle between the centers of two adjacent rollers 300 and the axis of the rotating shaft of the rotating structure 100 on the same section perpendicular to the axis of the rollers 300; a is the longest distance of the movement track of the roller 300 when moving along the straight pressing section 212 in the first guide groove 210; r is the farthest distance from the axis of the rotating shaft of the rotating structure 100 to the movement track of the roller 300 in the first guide groove 210.

In some embodiments, as shown in fig. 7, R is the radius of the motion trajectory of roller 300 as it moves along arc segment 211. In FIG. 7 is shown

In the case shown in fig. 7, when the axial center of one roller 300 is located at one end of the straight pressing section 212, the axial center of the other roller is located at the other end of the straight pressing section 212. By arranging the rollers 300 according to the above-described conditional expression, at least two rollers 300 can be simultaneously positioned on the linear pressing section 212 of the first guide groove 210. The movement locus in this specification means a movement locus formed by the axis of the roller 300 when the roller 300 moves. The rollers 300 are arranged in an arrangementThe linear peristaltic pump can realize continuous conveying during liquid conveying, and no liquid backflow condition occurs.

In some embodiments, referring to fig. 7, the number of rollers 300 may be five, and then the included angles between the centers of two adjacent rollers 300 and the axis of the rotating shaft of the rotating structure 100 on the same section perpendicular to the axis of the rollers 300 are respectively θ ₁ 、θ ₂ 、θ ₃ 、θ ₄ 、θ ₅ . In some embodiments, five rollers 300 may be unevenly distributed about the axis of rotation of the rotating structure 100, i.e., θ ₁ 、θ ₂ 、θ ₃ 、θ ₄ 、θ ₅ Not equal but θ ₁ 、θ ₂ 、θ ₃ 、θ ₄ 、θ ₅ All satisfy the condition

The linear peristaltic pump of this embodiment may be used in non-uniform fluid delivery applications.

In some embodiments, as shown in fig. 5, the rollers 300 may be four and uniformly distributed on the outer side of the rotation shaft of the rotation structure 100, i.e., θ=90°, and the linear peristaltic pump of this embodiment may be used in a uniform fluid delivery application scenario.

In some embodiments, the plurality of slots 110 are evenly distributed across the first turntable 101 and the second turntable 102. As shown in fig. 5, the bar grooves 110 have four sets, and the support shafts 320 of the four rollers 300 are mounted on the four sets of the bar grooves 110.

Fig. 8 is a schematic illustration of the dimensional relationship between a bar-type groove and a first guide groove according to some embodiments of the present disclosure.

In some embodiments, referring to fig. 8, the movement of the roller 300 toward the rotation center direction of the rotating structure 100 satisfies the following conditional expression:

wherein B is the longest distance of the movement locus of the roller 300 moving unidirectionally in the bar groove 110; r is the most distance from the axis of the rotating shaft of the rotating structure 100 to the movement track of the roller 300 in the first guide groove 210A long distance; a is the longest distance of the movement trace of the roller 300 when moving along the straight pressing section 212 in the first guide groove 210. Accordingly, the moving stroke of the roller 300 within the bar-shaped groove 110 is determined based on the shape size of the first guide groove 210, and the size of the support shaft 320 of the roller 300. Meanwhile, the length of the bar-shaped groove 110 needs to give the roller 300 sufficient reciprocating space. Therefore, the linear peristaltic pump of the present disclosure may be designed according to the actual requirements, such as the shape and size of the first guide groove 210, the size of the roller 300, and the length of the bar-shaped groove 110. In some embodiments, the first guide groove 210 includes an arc segment 211 and a straight pressing segment 212, and r is a radius of a movement trace of the roller 300 when moving along the arc segment 211.

In some embodiments, each roller 300 includes a body portion 310 and a support shaft 320. The supporting shafts 320 of the plurality of rollers 300 pass through the plurality of bar-shaped grooves 110 of the rotating structure 100, respectively. Referring to fig. 2, the body portion 310 is used to compress a conduit 800 (e.g., a flexible hose). The supporting shafts 320 of the plurality of rollers 300 pass through the plurality of bar-shaped grooves 110, respectively, and are positioned in the first guide groove 210. The body portion 310 may have a cylindrical shape, an elliptic cylindrical shape, or the like. The first guide groove 210 and the bar-shaped groove 110 each play a role in guiding the movement of the roller 300. The support shaft 320 of the roller 300 may move from the circular arc section 211 to the linear pressing section 212, or may move from the linear pressing section 212 to the circular arc section 211. When the rotating structure 100 rotates, the support shafts 320 of the plurality of rollers 300 reciprocate within the bar-shaped groove 110 while moving along the first guide groove 210. The conduit 800 may be disposed on a side of the linear extrusion section 212 remote from the circular arc section 211, as above the linear extrusion section 212 in fig. 3. When the supporting shaft 320 of the roller 300 is positioned at the straight pressing section 212, the roller 300 can press the pipe 800. In some embodiments, at least two rollers 300 are simultaneously positioned on the linear extrusion section 212 to facilitate pushing the flow within the pipe 800.

In some embodiments, referring to fig. 8, the length of the bar-shaped groove 110 satisfies the following conditional expression: c is more than or equal to B+phi; wherein C is the length of the slot 110; b is the longest distance of the motion trajectory of the roller 300 moving unidirectionally in the bar slot 110; Φ is the diameter of the supporting shaft 320 of the roller 300. The length of the strip-shaped groove 110 meets the above conditional expression, ensures that the moving travel of the roller 300 in the strip-shaped groove 110 is not limited, and further ensures that the liquid is smoothly conveyed when the linear peristaltic pump is used.

In some embodiments, the width of the bar-shaped groove 110 is equal to or slightly greater than the diameter of the support shaft 320 of the roller 300. The width of the bar-shaped groove 110 allows smooth reciprocation of the roller 300 in the length direction of the bar-shaped groove 110, and prevents shaking of the roller 300 in the width direction of the bar-shaped groove 110.

Fig. 9 is a schematic structural view of a housing of a linear peristaltic pump according to some embodiments of the present disclosure.

In some embodiments, referring to fig. 9 and 10, the linear peristaltic pump further includes a housing 500. The housing 500 is disposed on the support base 200. The first turntable 101 and the second turntable 102 are each housed within the housing 500. In some embodiments, the housing 500 may be detachably and fixedly coupled to the support base 200 by a screw. When the linear peristaltic pump fails, the detachable shell is convenient to maintain.

Referring to fig. 9, a second guide groove 510 is provided on the housing 500; the second guide groove 510 is the same size and shape as the first guide groove 210, and is located at both ends of the roller 300, respectively. The support shafts 320 at both axial ends of each roller 300 are respectively located in the first guide groove 210 and the second guide groove 510. Two symmetrical moving guide rails (namely a first guide groove 210 and a second guide groove 510) are designed at two ends of the roller 300, so that smooth movement of a plurality of rollers 300 is further ensured, and the problems of inclination or derailment of the support shaft 320 and the like in the using process are avoided.

In some embodiments, the housing 500 is provided with a first conduit-restricting groove 520. The first conduit-restraining slot 520 is parallel to the straight extrusion section 212. When the housing 500 is opened to install the pipe 800, the first pipe stopper groove 520 facilitates quick positioning installation of the pipe 800. The pipe 800 installed in the first pipe limit groove 520 is located between the first turntable 101 and the second turntable 102, and is located at a side of the linear pressing section 212 away from the circular arc section 211. As shown in fig. 2 and 3, the pipe 800 installed in the first pipe restraining groove 520 may be located above the plurality of rollers 300 and the straight pressing section 212.

In some embodiments, referring to fig. 10, the linear peristaltic pump further includes a cover 600. The cover 600 is provided to cover the housing 500. In some embodiments, the cover 600 is hinged with the support base 200, and the cover 600 may be opened or closed with respect to the housing 500. When the cover 600 is opened, the liquid conveying pipe 800 is conveniently installed in the linear peristaltic pump, and the cover 600 is closed so that the pipe 800 is clamped in the first pipe limiting groove 520.

In some embodiments, as shown in fig. 9 and 10, a second pipe limit groove 610 is provided on the cover 600. When the cover 600 is covered on the housing 500, the second pipe limit groove 610 and the first pipe limit groove 520 enclose a pipe limit groove with a circular cross section. The design of the second tube limit groove 610 further limits the position of the tube 800 in the linear peristaltic pump, preventing the tube 800 from radial displacement during the infusion operation of the linear peristaltic pump.

In some embodiments, as shown in fig. 10, the linear peristaltic pump further includes a locking structure 700 for locking the housing 500 and the cover 600. In some embodiments, the locking structure 700 may include a collet 710 and a catch 720 that mates with the collet 710. The chuck 710 may be coupled to the cover 600 and the latch 720 may be fixedly coupled to the housing 500. In some embodiments, the locking structure 700 may be a spring lock, for example, when the cover 600 needs to be closed, the clamp 710 is snapped into the lock 720 and locked, when the cover 600 needs to be opened, the clamp 710 is pressed down, and the lock 720 releases the clamp 710, so that the cover 600 can be quickly opened to realize quick replacement of the pipe 800.

In some embodiments, the locking structure 700 may be other types of latches, and only needs to be capable of quickly opening and closing the cover 600, and the specific structure of the locking structure 700 is not limited in this specification. For example, the locking structure 700 may be a magnetically attractable latch.

In some embodiments, the locking structure 700 may also be a self-closing hinge provided at the hinge of the cover 600 and the support base 200. When the cover 600 needs to be opened, the hinge can be opened by external force, and when the cover 600 needs to be closed, the hinge capable of being automatically closed can automatically close the cover 600 after the external force is removed.

In some embodiments, the first guide channel 210 may have two straight extruded sections 212 (this embodiment does not show a drawing). For example, the first guide groove 210 may be composed of upper and lower straight pressing sections 212 and left and right circular arc sections 211. In this embodiment, the two ends of the circular arc segment 211 can be understood as being connected to the straight extrusion segments 212, respectively, except that the two ends of the circular arc segment 211 are connected to different straight extrusion segments 212. The linear peristaltic pump shown in the embodiment can clamp two pipelines to pump liquid at the same time, but the pumping directions of the two pipelines are opposite to each other, so that the linear peristaltic pump is suitable for more scenes in daily use.

In some embodiments, the first guide slot 210 may also be provided with more than two linear crush segments 212 (e.g., three or four). Both ends of each linear extrusion section 212 are connected with other adjacent linear extrusion sections 212 through circular arc sections 211. The arc sections 211 are adopted to carry out transition among the plurality of straight extrusion sections 212, so that mutual extrusion among a plurality of infusion pipelines can be avoided.

The embodiment of the specification also provides a perfusion culture system, which comprises a culture container and at least one linear peristaltic pump according to any one of the embodiments. The linear peristaltic pump is used for conveying liquid into the culture container and/or pumping liquid out so as to realize liquid supply and liquid discharge of culture work of the perfusion culture system.

While the basic concepts have been described above, it will be apparent to those skilled in the art that the foregoing detailed disclosure is by way of example only and is not intended to be limiting. Although not explicitly described herein, various modifications, improvements, and adaptations to the present disclosure may occur to one skilled in the art. Such modifications, improvements, and modifications are intended to be suggested within this specification, and therefore, such modifications, improvements, and modifications are intended to be included within the spirit and scope of the exemplary embodiments of the present utility model.

Meanwhile, the specification uses specific words to describe the embodiments of the specification. Reference to "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic is associated with at least one embodiment of the present description. Thus, it should be emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various positions in this specification are not necessarily referring to the same embodiment. Furthermore, certain features, structures, or characteristics of one or more embodiments of the present description may be combined as suitable.

Finally, it should be understood that the embodiments described in this specification are merely illustrative of the principles of the embodiments of this specification. Other variations are possible within the scope of this description. Thus, by way of example, and not limitation, alternative configurations of embodiments of the present specification may be considered as consistent with the teachings of the present specification. Accordingly, the embodiments of the present specification are not limited to only the embodiments explicitly described and depicted in the present specification.

Claims

1. A linear peristaltic pump comprising:

a rotation drive source (400);

the rotating structure (100), the rotating structure (100) is connected with the rotating driving source, a plurality of strip-shaped grooves (110) are formed in the rotating structure (100), and the plurality of strip-shaped grooves (110) are arranged at intervals around the rotating shaft of the rotating structure (100);

the rotating structure (100) is rotatably arranged on the supporting seat (200); the support base (200) is provided with a first guide groove (210), and the first guide groove (210) is arranged around the rotating shaft of the rotating structure (100); the first guide groove (210) at least comprises a linear extrusion section (212); the strip-shaped groove (110) extends along the radial direction of the rotating shaft of the rotating structure (100);

a plurality of rollers (300) passing through the plurality of bar grooves (110) respectively and being located in the first guide groove (210);

when the rotating structure (100) rotates, a plurality of rollers (300) reciprocate within the bar-shaped groove (110) while moving along the first guide groove (210).

2. The linear peristaltic pump of claim 1, characterized in that said rotating structure (100) comprises a first carousel (101) and a second carousel (102) arranged in parallel and coaxially, said first carousel (101) being fixed with said second carousel (102); a plurality of strip-shaped grooves (110) are formed in each of the first rotary table (101) and the second rotary table (102); the plurality of strip-shaped grooves (110) of the first turntable (101) are arranged in one-to-one correspondence with the plurality of strip-shaped grooves (110) of the second turntable (102); the rollers (300) are arranged between the first rotary table (101) and the second rotary table (102), and supporting shafts (320) at two axial ends of each roller (300) respectively penetrate through the strip-shaped grooves (110) which are correspondingly arranged on the first rotary table (101) and the second rotary table (102).

3. The linear peristaltic pump of claim 1, characterized in that the distribution of a plurality of said rollers (300) satisfies the following conditional expression:

wherein θ is an included angle between the centers of two adjacent rollers (300) on the same section perpendicular to the axis of the rollers (300) and the axis of the rotating shaft of the rotating structure (100) respectively; a is the longest distance of the motion trail of the roller (300) when moving along the straight extrusion section (212) in the first guide groove (210); r is the farthest distance from the axis of the rotating shaft of the rotating structure (100) to the movement track of the roller (300) in the first guide groove (210).

4. Linear peristaltic pump according to claim 1, characterized in that the movement of the roller (300) in the direction of the rotation centre of the rotating structure (100) satisfies the following condition:

wherein B is the longest distance of the motion track of the roller (300) moving unidirectionally in the strip-shaped groove (110); r is the farthest distance from the axis of the rotating shaft of the rotating structure (100) to the movement track of the roller (300) in the first guide groove (210); a is the longest distance of the movement track of the roller (300) when moving along the straight extrusion section (212) in the first guide groove (210).

5. A linear peristaltic pump as claimed in claim 3 or 4, wherein: the first guide groove (210) comprises a circular arc section (211) and a linear extrusion section (212); both ends of the arc section (211) are respectively connected with the linear extrusion section (212); wherein R is the radius of the movement track of the roller (300) when moving along the arc section (211) in the first guide groove (210).

6. The linear peristaltic pump of claim 1 wherein each of said rollers (300) includes a main body portion (310) and a support shaft (320); the supporting shafts (320) of the rollers (300) respectively penetrate through the strip-shaped grooves (110) on the rotating structure (100); the length of the strip-shaped groove (110) satisfies the following conditional expression:

C≥B+Φ；

wherein C is the length of the bar slot (110); phi is the diameter of the support shaft (320) of the roller (300).

7. The linear peristaltic pump of claim 2, further comprising a housing (500); the shell (500) is arranged on the supporting seat (200); -the first turntable (101) and the second turntable (102) are both housed within the housing (500); the shell (500) is provided with a second guide groove (510); the second guide groove (510) has the same size and shape as the first guide groove (210) and is respectively positioned at two ends of the roller (300); support shafts (320) at both axial ends of each roller (300) are respectively located in the first guide groove (210) and the second guide groove (510).

8. The linear peristaltic pump of claim 7 wherein said housing (500) is provided with a first tube-defining slot (520), said first tube-defining slot (520) being parallel to said linear extrusion section (212);

the linear peristaltic pump further comprises a cover (600); the cover body (600) is arranged on the shell (500) in a covering way; a second pipeline limiting groove (610) is formed in the cover body (600); when the cover body (600) is covered on the shell (500), the second pipeline limiting groove (610) and the first pipeline limiting groove (520) are surrounded to form a pipeline limiting groove with a circular cross section.

9. The linear peristaltic pump of claim 8 further comprising a locking structure (700) for locking said housing (500) and said cover (600).

10. A perfusion culture system, characterized in that: comprising a culture vessel and at least one linear peristaltic pump according to any one of claims 1 to 9; the linear peristaltic pump is used for delivering liquid into the culture container and/or extracting liquid.