CN220705901U

CN220705901U - Adjustable extrusion peristaltic pump

Info

Publication number: CN220705901U
Application number: CN202322030114.8U
Authority: CN
Inventors: 汪强; 王瑞鹏; 孙金福; 赵远路; 张彦峰; 张小伶
Original assignee: Baoding Lead Fluid Technology Co ltd
Current assignee: Baoding Lead Fluid Technology Co ltd
Priority date: 2023-07-31
Filing date: 2023-07-31
Publication date: 2024-04-02
Anticipated expiration: 2033-07-31

Abstract

The embodiments of the specification disclose an adjustable squeeze peristaltic pump comprising: the hose clamp comprises a body, a transmission part, an extrusion part, a stop block and a limiting plate, wherein the limiting plate is arranged on the upper end face of the body and fixedly connected with the body, and a hose is placed below the limiting plate; when the hose pressing device works, the pressing piece is driven by the transmission part to do reciprocating motion and is used for pressing the hose; the stop block reciprocates under the drive of the transmission part and is used for stopping the liquid inlet end or the liquid outlet end of the hose; the height of the stop block can be adjusted. The scheme improves the stop valve structure, changes the fixed stop valve structure into a structure with adjustable height so as to change the extrusion state of the hose and further change the pipeline pressure for fluid transmission.

Description

Adjustable extrusion peristaltic pump

Technical Field

The application relates to the technical field of fluid transmission, in particular to an adjustable extrusion peristaltic pump.

Background

The conveying pressure of the extrusion peristaltic pump in the prior art is determined by the extrusion state of the stop valve to the hose, the better the sealing state of the hose is after the extrusion of the stop valve, the larger the pressure in the hose is, the larger the pressure transmitted to the outside is allowed, but the height of the stop valve of the existing extrusion peristaltic pump is not adjustable, namely the sealing effect of the stop valve to the hose is not adjustable, and the real-time regulation of the pipeline pressure in actual use cannot be realized.

Disclosure of Invention

In view of the foregoing, embodiments of the present application provide an adjustable squeeze peristaltic pump for adjusting tubing pressure for fluid delivery in the squeeze peristaltic pump to improve compliance.

In order to solve the above technical problems, the embodiments of the present specification are implemented as follows:

an embodiment of the present disclosure provides an adjustable squeeze peristaltic pump, comprising: the hose clamp comprises a body, a transmission part, an extrusion part, a stop block and a limiting plate, wherein the limiting plate is arranged on the upper end face of the body and fixedly connected with the body, and a hose is placed below the limiting plate;

when the hose pressing device works, the pressing piece is driven by the transmission part to do reciprocating motion and is used for pressing the hose; the stop block reciprocates under the drive of the transmission part and is used for stopping the liquid inlet end or the liquid outlet end of the hose;

the height of the stop block can be adjusted.

In one or more embodiments, the cutoff block may include: the device comprises a stop block shell, a rising pressing block and an adjusting piece;

the upper pressure increasing block is arranged inside the stop block shell, the upper pressure increasing block is arranged above the adjusting piece, and the upper pressure increasing block moves up and down and stretches out of the top of the stop block shell under the driving of the adjusting piece.

In one or more embodiments, the adjusting member is an elastic body having an elastic direction identical to a moving direction of the rising weight.

In one or more embodiments, the adjustment member is a cam, the outer edge of which is tangential to the bottom of the lifting press block.

In one or more embodiments, the adjusting member is a moving block, the moving block is installed inside the stop block housing, and the upper pressure increasing block moves up and down and extends out of the top of the stop block housing under the driving of the moving block.

In one or more embodiments, the lifting block and the moving block form a cam mechanism, and a moving direction of the moving block is perpendicular to a moving direction of the lifting block.

In one or more embodiments, the cutoff block further comprises: the screw is connected with the moving block through threads, and the screw penetrates through the stop block shell.

In one or more embodiments, the screw includes a screw rod and a knob, the screw rod is inserted into the knob, a threaded hole is formed in the moving block, the screw rod is matched with the threaded hole, and the knob is arranged outside the shell of the stop block.

In one or more embodiments, one end of the knob is fixedly connected with a ratchet wheel, and the ratchet wheel is connected with a ratchet wheel arranged on the stop block shell in a matching way.

In one or more embodiments, a spring is provided on a side of the ratchet adjacent the screw.

In one or more embodiments, a side of the upper boost block adjacent the knob identifies a movement scale.

In one or more embodiments, the cutoff block includes: the liquid inlet stop block is linked with the regulating block of the liquid outlet stop block.

The above-mentioned at least one technical scheme that this description embodiment adopted can reach following beneficial effect:

in the scheme, from the viewpoint of improving the sealing effect of the stop valve on the hose, the stop valve structure is improved, and the fixed stop valve structure is changed into an adjustable structure (namely, the height of the stop valve is changed) so as to change the extrusion state of the hose, thereby changing the pipeline pressure for fluid transmission.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:

FIG. 1 is a schematic diagram of the overall structure of an adjustable squeeze peristaltic pump according to an embodiment of the present disclosure;

FIG. 2 is a schematic cross-sectional view of a regulated extrusion peristaltic pump;

FIG. 3 is a schematic view of the internal structure of a regulated extrusion peristaltic pump;

FIG. 4 is a schematic view of the internal structure of the shut-off valve;

FIG. 5 is a schematic diagram of an assembly structure of a lifting block and a moving block;

FIG. 6 is a side view of the assembled structure of the lifting block and the moving block;

FIG. 7 is a schematic view of section I-I of the assembled structure of the lifting block and the moving block of FIG. 5;

FIG. 8 is a schematic view of the overall structure of the screw;

FIG. 9 is a schematic view in section J-J of the screw of FIG. 8;

FIG. 10 is a cross-sectional view of the shaft of the screw inserted into the knob;

reference numerals: 1. a pump head housing; 2. a stop block; 3. extruding a block; 4. a main shaft; 5. a spindle bearing; 6. a gasket; 7. a driving motor; 8. a liquid discharge stop cam; 9. extruding the working cam; 10. a limiting plate; 11. a liquid inlet stop cam; 12. a hose; 201. a stop block housing; 202. ascending a pressing block; 203. a moving block; 204. moving the scale; 205. a screw; 206. a spring; 207. a knob; 208. a ratchet wheel.

Detailed Description

For the purposes, technical solutions and advantages of the present application, the technical solutions of the present application will be clearly and completely described below with reference to specific embodiments of the present application and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

Embodiments of the present specification provide an adjustable squeeze peristaltic pump comprising: the hose clamp comprises a body, a transmission part, an extrusion part, a stop block and a limiting plate, wherein the limiting plate is arranged on the upper end face of the body and fixedly connected with the body, and a hose is placed below the limiting plate;

the height of the stop block can be adjusted.

The reciprocating motion is not particularly limited, and may be linear reciprocating motion or oscillating reciprocating motion, so long as the hose is pressed and fluid transmission is realized.

Alternatively, the pressing piece is driven by the transmission part to do linear reciprocating motion or swing reciprocating motion, and the stop block is driven by the transmission part to do linear reciprocating motion. The stop block makes linear reciprocating motion, which is more beneficial to effectively stopping the hose.

The body refers to an integral part of the extrusion peristaltic pump, other structures are structurally installed on the basis of the body, and the body can be also called a shell, a frame and other names. The body can be a shell with an empty inside, can be a shell without a cover at the top, and can be a shell without a cover at the top and the bottom. In some embodiments, the drive member, extrusion, stop may be disposed inside the body or may be disposed outside the body. The extrusion part and the cutoff block can correspond to one body or a plurality of bodies. Similarly, the limiting plate can be one, two or more.

An extrusion is understood to mean a part, component or element or the like which can press against a hose. For example, the extrusion may be a briquette, a rod, or the like. Compared with the traditional rotary peristaltic pump, the axial rubbing of the hose is reduced through the interval action of the extrusion pieces, so that the axial excessive friction of the hose is reduced, the service life of the hose is prolonged, and the transmission precision is improved. The extrusion may be a single component or may be a unitary body of multiple components.

The limiting plate is used for limiting the hose, and can also be called as a fixed block, a fixed plate, a supporting plate or an upper pressing block and the like, so that the hose is fixed between the limiting plate and the extrusion piece or the stop block, wherein the limiting plate has a similar function with the upper pressing block of the rotary peristaltic pump. Wherein, the limiting plate can be a plurality of, corresponds the extrusion piece respectively and cuts off the piece setting.

The limiting plate is fixedly connected with the body and comprises detachable connection and non-detachable connection. The removable connection may include a hinge, a threaded connection, or the like.

The stop block is used for stopping the liquid inlet end or the liquid outlet end of the hose, so the stop block can comprise a liquid inlet stop block and a liquid discharge stop block, and the liquid inlet stop block and the liquid discharge stop block are arranged on two sides of the extrusion. The liquid inlet stop block and the liquid outlet stop block can be arranged independently or can form a whole. The liquid inlet stop block and the liquid outlet stop block can be driven by one transmission part or two transmission parts, and can be driven by one motor for convenience and volume reduction.

The stop block may be a mechanical component (such as a press block) or an electronic component (such as an electronic valve).

Since an effective shut-off of the hose is required, the construction of the shut-off block can be selected according to this requirement. For example, a clamping block may be employed.

The transmission part is used for driving the extrusion piece and the stop block to press the hose, wherein the transmission part can be an eccentric transmission mechanism such as a cam, a connecting rod mechanism, a linear transmission mechanism and the like. The transmission member and the pressing unit (pressing member and cut-off block) can be in point contact, line contact and surface contact.

In some embodiments, the eccentric transmission mechanism sequentially comprises a first eccentric part, a second eccentric part and a third eccentric part which are coaxial, wherein the second eccentric part is an eccentric wheel, the first eccentric part or the third eccentric part is a cam, and the eccentric angles of adjacent eccentric parts are different.

In the above embodiment, the eccentric transmission mechanism may include a plurality of eccentric members, and the eccentric members may be understood as members whose geometric center and center of mass (center of gravity) are not at the same point. The eccentric drive may comprise an eccentric, which mainly refers to a circular wheel, whose centre and centre of rotation are not coincident, and a cam, which may refer to a mechanical turning or sliding member (such as a wheel or a protruding part of a wheel), which transmits the movement to a roller that moves against its edge or a needle bar that is free to move on the grooved surface, or from which such roller and needle bar are received. According to the cam profile, the follower can obtain any expected motion law, and the structure is simple and compact, and the manufacture is easy.

In some embodiments, the eccentric drive mechanism is a cam shaft having a plurality of cams, the cam shaft being rotatably disposed on the body, the phase angles corresponding to the highest peaks of adjacent ones of the cams being different.

In these embodiments, the eccentric transmission is entirely accomplished with a cam structure, which together drive the different pressing units (pressing members and stop blocks) to perform different functions. The phase angles corresponding to the highest peaks of the adjacent cams are different, and the fact that the positions of the central angles corresponding to the positions of the highest peaks of the cams are different can be understood. For example, when one cam is in a state of shutting off the hose, the adjacent cams cannot be in a state of shutting off the hose, that is, the phase angles corresponding to the highest peaks of the adjacent cams are different.

The phase angle can be understood as that the origin of the X and Y two-dimensional coordinate centers is placed at the center of a cam spindle, the included angle between the positive direction of the X axis and the movement direction of a cam follower is the phase angle, and the relative rotation angle of the cam profile relative to a key groove of a cam shaft when the origin of movement is obtained is used.

The phase angles corresponding to the highest peaks of the cams are different, so that different processes, such as liquid feeding, conveying, liquid discharging and the like, are realized together when the pressing unit (the pressing piece and the stop block) is driven to press the hose.

The characteristic of this scheme is to change feed liquor stop block and flowing back stop block into the height-adjustable briquetting, by the sealing ability of height-adjustable briquetting to the hose regulation.

The fixed structure of the stop block is changed into an adjustable structure, and the adjustable structure comprises a stop block shell, a rising pressing block and an adjusting piece; the upper pressure increasing block is arranged inside the stop block shell and arranged above the moving block, and the upper pressure increasing block moves up and down and stretches out of the top of the stop block shell under the drive of the adjusting piece and is used for stopping the hose.

Wherein, the adjusting piece can be an elastic body, a cam or a moving block, etc.

When the adjusting piece is an elastic body, the elastic direction of the elastic body is the same as the moving direction of the ascending pressing block, and the effect of adjusting the height of the stop block can be achieved. The elastomer may be a spring, silicone, or the like. Compression and relaxation of the elastomer may be achieved by other structures.

When the regulating part is a cam, the outer edge of the cam is tangent with the bottom of the upper pressure increasing block, and the cam rotates to different angles due to the fact that the cam is an eccentric device, the height of the upper pressure increasing block can be changed, and therefore the purpose of changing the height of the cut-off block is achieved. Instead of cams, other eccentric type mechanisms may be employed.

When the regulating piece is a moving block, the moving block is arranged inside the stop block shell, and the upper pressure increasing block moves up and down and stretches out of the top of the stop block shell under the driving of the moving block. The moving block can move in an action mode, and the left-right movement is adjusted to move up and down through the wedge-shaped structure.

Since the cutoff block includes: the liquid inlet stop block and the liquid outlet stop block can be linked in order to improve the adjusting precision in some embodiments. The specific mode of linkage can adopt the same regulating block, and can also adopt two regulating blocks with high consistency to realize linkage.

Example 1

The following describes in detail the technical solutions provided by the embodiments of the present application with reference to the accompanying drawings.

As shown in fig. 1-3, the adjustable extrusion peristaltic pump comprises a pump head and a driving motor 7, the pump head comprises a pump head shell 1, a hose 12 arranged along a straight line direction, a main shaft 4 parallel to the hose 12 direction, and a limiting plate 10 arranged on the other side of the hose 12, a liquid inlet stop cam 11, an extrusion working cam 9 and a liquid discharge stop cam 8 are sequentially arranged along the axial direction of the main shaft 4, the pump head further comprises various functional press blocks for extruding the hose 12, specifically a liquid inlet stop block, an extrusion block 3 and a liquid discharge stop block, wherein the stop block 2 comprises the liquid inlet stop block and the liquid discharge stop block, the liquid inlet stop cam 11, the extrusion working cam 9 and the liquid discharge stop cam 8 are respectively arranged corresponding to the liquid inlet stop block, the extrusion block 3 and the liquid discharge stop block, and the rotation of the cam drives the press blocks to reciprocate according to the rule of the cams, and finally the liquid inlet stop block, the extrusion block 3 and the liquid discharge stop block extrude the hose 12 to the direction of the limiting plate 10, so that the pumping function of the extrusion peristaltic pump is realized.

As shown in fig. 4 and 7, the cutoff block 2 includes: a cutoff block case 201, an upper pressure increasing block 202, and a moving block 203; the upper pressure increasing block 202 and the moving block 203 are arranged in the stop block shell 201, and the stop block shell 201 plays a role in limiting the pressure increasing block 202, so that the upper pressure increasing block 202 can only move up and down along the installation direction in the stop block shell 201; similarly, the stop block housing 201 also plays a limiting role on the moving block 203, and limits the moving block 203 to move only left and right, and the moving direction of the stop block housing 201 is perpendicular to the moving direction of the upper pressure increasing block 202, so that the stop block housing 201 plays a limiting role on two moving parts. Inclined planes are arranged on the upper surface of the rising pressing block 202 and below the moving block 203, the inclined planes of the two parts are matched with each other, the rising pressing block 202 is a stressed body to form a working inclined wedge, also called a sliding block, the moving block 203 forms an active inclined wedge, and the sliding block is matched with the inclined wedge to form an inclined wedge mechanism. The horizontal movement of the moving block 203 is converted into the vertical movement of the upper boost block 202.

The movement of the moving block 203 is controlled by a screw, as shown in fig. 5, 8-10, which includes: a screw 205, a knob 207 and a ratchet 208. Wherein, be provided with the screw hole in the movable block 203, screw rod 205 cooperates with the screw hole, realizes spiral regulation removal.

One end of the screw 205 is inserted with a knob 207, and the knob head is exposed out of the pressing block, so that the position can be adjusted at any time during working. The other end of the knob 207 is provided with a ratchet 208, the ratchet 208 is fixedly connected with the knob 207, a round hole is formed in the position, corresponding to the knob 207, of the stop block shell 201, and a ratchet (not shown in the figure) matched with the ratchet 208 is arranged on the round hole. The ratchet cooperates with the ratchet 208 to limit rotation of the knob to only one protocol. For the ratchet 208 to control the screw 205 to rotate unidirectionally, when reverse rotation is required, the knob needs to be pushed in to the direction of the screw 205 until the ratchet 208 is disengaged from the ratchet in the stop block housing 201 and then rotates reversely.

As shown in fig. 8, a spring 206 is provided on the side of the ratchet 208 near the screw 205, and the spring 206 provides thrust to the ratchet 208 to avoid disengagement.

As shown in fig. 6, a movement scale 204 is also marked on the side of the lifting block 202 for better determination of the adjustment position.

When the scheme is used, the scheme is required to be installed in an extrusion peristaltic pump, and when the pipeline pressure is increased, the knob 207 is rotated, the screw 205 pushes the moving block 203 to move, and the upper pressure increasing block 202 is pushed to move upwards under the matched movement of the wedge mechanism. The ratchet wheel 208 is matched with the screw 205 to fix the position after the moving position is determined, so that the problem of inconsistent extrusion quantity of the hose caused by dislocation movement in the process of repeatedly extruding cartilage by the pressing block is avoided.

Example two

Unlike the first embodiment, the adjusting member in this embodiment is an elastic body, and the elastic direction of the elastic body needs to be the same as the moving direction of the rising block, so as to achieve the effect of adjusting the height of the blocking block. The elastic body can be elastic materials such as springs, silica gel and the like. Compression and relaxation of the elastomer may be achieved by other structures.

The spring or the elastic material can also be controlled by adjusting the height of the spring or the elastic material, so that the height of the elastomer is adjusted, and finally the position of the upper pressure increasing block is adjusted.

Example III

Unlike the first embodiment, the adjusting member in this embodiment is a cam, at this time, the outer edge of the cam is tangent to the bottom of the upper boost block, and since the cam is an eccentric device, the cam rotates to different angles, and the height of the boost block changes, so that the purpose of changing the height of the stop block is achieved. Instead of cams, other eccentric type mechanisms may be employed.

The cam structure is adopted for adjustment, manual adjustment (such as a knob mode) can be adopted for adjustment of the cam angle, electric control can be adopted, and electric control can be better time limit linkage for linkage adjustment of the liquid inlet stop block and the liquid beating end stop block.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.

The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.

Claims

1. An adjustable squeeze peristaltic pump comprising: the hose clamp comprises a body, a transmission part, an extrusion part, a stop block and a limiting plate, wherein the limiting plate is arranged on the upper end face of the body and fixedly connected with the body, and a hose is placed below the limiting plate;

the height of the stop block can be adjusted.

2. The regulated extrusion peristaltic pump of claim 1 wherein the cutoff block comprises: the device comprises a stop block shell, a rising pressing block and an adjusting piece;

3. The adjustable peristaltic pump of claim 2 wherein the adjustment member is an elastomer having a direction of elasticity that is the same as the direction of movement of the lifting block.

4. The adjustable peristaltic pump of claim 2 wherein the adjustment member is a cam having an outer edge tangential to the bottom of the ascending pressure block.

5. The adjustable peristaltic pump of claim 2 wherein the adjustment member is a moving block mounted within the stop block housing, the upper pressure increasing block being moved up and down and extending out of the top of the stop block housing under the drive of the moving block.

6. The adjustable peristaltic pump as claimed in claim 5, wherein the lifting block and the moving block form a cam mechanism, and a moving direction of the moving block is perpendicular to a moving direction of the lifting block.

7. The regulated extrusion peristaltic pump of claim 5, wherein the cutoff block further comprises: the screw is connected with the moving block through threads, and the screw penetrates through the stop block shell.

8. The adjustable extrusion peristaltic pump of claim 7 wherein the screw includes a threaded rod and a knob, the threaded rod is inserted into the knob, a threaded hole is provided in the moving block, the threaded rod mates with the threaded hole, and the knob is disposed outside the stop block housing.

9. The adjustable peristaltic pump of claim 8 wherein one end of the knob is fixedly connected to a ratchet wheel, the ratchet wheel being matingly connected to a ratchet tooth provided on the stop block housing.

10. The adjustable peristaltic pump as claimed in claim 9, wherein a spring is provided on a side of the ratchet adjacent the screw.

11. The adjustable squeeze peristaltic pump of claim 8 wherein a side of the upper pressure block adjacent the knob is marked with a displacement scale.

12. The regulated extrusion peristaltic pump of claim 2 wherein the cutoff block comprises: the liquid inlet stop block is linked with the regulating block of the liquid outlet stop block.