CN214787925U

CN214787925U - High-precision rotary split charging peristaltic pump

Info

Publication number: CN214787925U
Application number: CN202120838554.4U
Authority: CN
Inventors: 王建中
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-04-22
Filing date: 2021-04-22
Publication date: 2021-11-19
Anticipated expiration: 2031-04-22

Abstract

The utility model relates to a peristaltic pump technical field provides a high accuracy rotation type partial shipment peristaltic pump, including the pump mount, hose pay-off roller components, the conveying hose, can reset extrusion mechanism and tube clamping mechanism, the conveying hose coils in the periphery of hose pay-off roller components along the circumferencial direction, can reset extrusion mechanism can extrude on the conveying hose of hose pay-off roller components periphery, and can reset the conveying hose between extrusion mechanism and the hose pay-off roller components and form the pay-off portion, one end of pay-off portion outwards extends and forms the feed end, the other end outwards extends and forms the discharge end, tube clamping mechanism sets up on the conveying hose between discharge end and pay-off portion, when stopping the pay-off, tube clamping mechanism is used for pressing from both sides tight conveying hose, realize the restoration of pay-off portion deformation and the shutoff of discharge end simultaneously; after each action, each mechanism resets, and the initial position of pay-off is fixed every time, has control accuracy height, the higher characteristics of efficiency.

Description

High-precision rotary split charging peristaltic pump

Technical Field

The utility model relates to a peristaltic pump technical field especially relates to a high accuracy rotation type partial shipment peristaltic pump.

Background

The peristaltic pump is generally suitable for conveying fluid materials, and the material conveying principle is that a section of pump pipe between two rotating rollers forms a pillow-shaped fluid, so that the material is conveyed. The existing peristaltic pump structure is provided with the rotating rollers at intervals, so that the stopping position of the rotating rollers is uncertain after feeding is finished every time, and the starting position of the rotating rollers is inconsistent when materials are conveyed next time, so that the feeding precision is not easy to control. In addition, after the feeding is finished each time, the roller stops rotating, so that the materials in the pump pipe can continue to flow under the action of inertia, and the phenomena of dropping or leaking occur, or the materials in the pump pipe lose the driving force of continuing flowing, so that the problems of backflow and the like occur. The above problems all affect the feeding precision of the peristaltic pump.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: in order to improve the pay-off precision of peristaltic pump among the prior art, the utility model provides a high accuracy rotation type partial shipment peristaltic pump makes each mechanism all increase the action that resets after every stage of pay-off to make the peristaltic pump pay-off all be in the same position at every turn, with improvement control accuracy.

The utility model provides a technical scheme that its technical problem will adopt is: a high-precision rotary split charging peristaltic pump, which comprises a pump seat, a hose feeding roller component, a material conveying hose, a resettable extrusion mechanism and a pipe clamping mechanism, wherein the hose feeding roller component, the material conveying hose, the resettable extrusion mechanism and the pipe clamping mechanism are arranged on the pump seat, wherein the material conveying hose is wound around the periphery of the hose feeding roller component along the circumferential direction, the resettable extrusion mechanism can extrude the material conveying hose on the periphery of the hose feeding roller component, and a feeding hose between the resettable extrusion mechanism and the hose feeding roller assembly forms a feeding part, one end of the feeding part extends outwards to form a feeding end, the other end extends outwards to form a discharging end, liquid materials in the pipe enter from the feeding end and are output from the discharging end through the feeding part, the pipe clamping mechanism is arranged on the conveying hose between the discharging end and the feeding portion, and when feeding is stopped, the pipe clamping mechanism is used for clamping the conveying hose, and meanwhile, the deformation of the feeding portion is restored and the discharging end is turned off.

In order to improve the control precision of the peristaltic pump, the moving process of each structure of the feeding part of the feeding hose is mainly controlled. Therefore, can design one and produce the mechanism of extrusion force at the pay-off portion circulation, it is concrete, but the extrusion mechanism that resets includes that slip briquetting, slider compress tightly actuating mechanism and elastic guide canceling release mechanical system, and wherein, the slip briquetting can cyclic motion, and can drive the slip briquetting and produce the reciprocal linear motion's of circulation mechanism and have multiple implementation, the utility model discloses in be through the slider that produces the packing force compress tightly actuating mechanism and produce the elastic guide canceling release mechanical system that resumes elasticity mutually support and realize. The flexible pipe feeding mechanism comprises a flexible pipe feeding roller component, a sliding pressing block pressing driving mechanism and a sliding pressing block pressing driving mechanism, wherein the sliding pressing block is over against one side of the flexible pipe feeding roller component, one side of the sliding pressing block, which faces away from the flexible pipe feeding roller component, is provided with an arc-shaped pressing surface, one side of the arc-shaped pressing surface is provided with a cam abutting surface, the sliding pressing blocks on the left side and the right side of the arc-shaped pressing surface are supported on an elastic guiding reset mechanism, the sliding pressing block pressing driving mechanism can generate driving force to drive the sliding pressing block to move on the elastic guiding reset mechanism towards the direction close to a feeding part, the feeding part is pressed between the sliding pressing block and the flexible pipe feeding roller component, the elastic guiding reset mechanism can generate elastic potential energy enabling the sliding pressing block to be far away from the feeding part when the sliding pressing block presses the feeding part, and after the driving force of the sliding pressing driving mechanism on the sliding pressing block disappears, the sliding pressing block is reset to the initial position under the elastic potential energy of the elastic guiding reset mechanism.

The slider compresses tightly actuating mechanism and can adopt lead screw, cylinder or other drive mechanism to realize, the utility model discloses well preferred cam mechanism that adopts realizes, and is concrete, slider compress tightly actuating mechanism and includes cam, cam carrier and cam driving motor, the cam is connected on cam driving motor's output shaft, and supports on the pump mount through cam carrier, and cam driving motor can drive the cam and swing on cam carrier, the swing end curved surface of cam can support on the cam butt face of slip briquetting and make the motion that the slip briquetting produced and is close to hose pay-off roller components, and after the cam upwards swings and breaks away from the slip briquetting, the slip briquetting can move to the initial position under elastic guide canceling release mechanical system's effect.

Elastic guide canceling release mechanical system is used for making the slip briquetting can both reset to the initial position at every turn, and is specific, elastic guide canceling release mechanical system is two sets ofly, installs on the pump stand through the bottom plate, and sets up respectively in the left and right sides of slip briquetting, and every elastic guide canceling release mechanical system of group includes briquetting guide post, briquetting uide bushing and reset spring, the upper and lower both ends of briquetting guide post are fixed respectively on the first supporting part and the second supporting part of bottom plate, and first supporting part is close to cam one side, and the second supporting part is close to wheel components one side, the briquetting uide bushing inlays in the slip briquetting, and overlaps and establish on the briquetting uide bushing, and the briquetting uide bushing can drive the slip briquetting and slide along the axis direction on the briquetting guide post, reset spring supports the one side that the slip briquetting was equipped with the arc plane of extrusion, and is located between slip briquetting and the second supporting part. The bottom plate is provided with a first supporting part, a second supporting part and a third supporting part in parallel, wherein the first supporting part and the second supporting part are used for installing an elastic guiding reset mechanism, and the third supporting part is used for limiting and positioning the conveying hose and facilitating installation of a cover plate of the roller assembly.

In order to avoid backward flow and hourglass material, the peristaltic pump has add the break-make that presss from both sides pipe mechanism cooperation hose pay-off roller components control conveying hose, and is concrete, it includes chuck, splint and chuck actuating mechanism to press from both sides pipe mechanism, chuck and splint set up respectively in the conveying hose both sides of discharge end, just chuck actuating mechanism can drive the chuck and be close to the clamp that splint realized the discharge end and turn off, perhaps drive the chuck and keep away from the relaxation of splint realization discharge end and open.

The realization mode of the driving mechanism for driving the chuck to realize the linear telescopic motion comprises but is not limited to the modes of adopting a motor lead screw, a cylinder, a gear rack and the like, the utility model provides a concrete realization mode for explaining the feasibility of the scheme, but the linear telescopic motion is not limited to the mode, the concrete chuck driving mechanism comprises a pipe clamp seat, a chuck guide post, a chuck roller component, a chuck slider and a chuck limiting plate, wherein, the chuck guide post is relatively and fixedly connected with the pump seat through the pipe clamp seat, two sides of the chuck slider are slidably connected on the chuck guide post, and the chuck slider is driven to reciprocate on the chuck guide post through the chuck roller component, the chuck limiting plate is fixed at one end of the pipe clamp seat close to the material conveying hose, and the middle part of the chuck limiting plate is provided with a chuck guide hole, one end of the chuck is connected on the chuck slider, the other end is opposite to the chuck guide hole, and the chuck limiting plate and the clamping plate are arranged in parallel to form a limiting channel of the conveying hose.

The chuck roller assembly comprises a chuck roller support, at least one chuck roller and a chuck roller driving motor, the upper end and the lower end of the chuck roller are connected to the chuck roller support, and the chuck roller driving motor drives the chuck roller to rotate circumferentially through the chuck roller support, so that the chuck slider is pushed to move on the chuck guide column, and the clamping and the turning-off of the conveying hose are realized.

Further, in order to guarantee the stability of hose discharge end, the pipe clamping mechanism still includes at least one hose limit layering, hose limit layering and splint parallel and level, and be located one side of defeated material hose, the spacing layering bottom of hose is fixed on the pump mount, and the top upwards extends and has the flexion towards defeated material hose, flexion and pipe clamp seat form defeated material hose's spacing hole jointly. During assembly, the discharge end of the conveying hose penetrates through the limiting hole and the limiting channel, when the conveying hose is filled with materials, the conveying hose expands, the bending portion presses the conveying hose on the pipe clamp seat, and meanwhile the clamping head limiting plate and the clamping plates clamp the conveying hose in the limiting channel, so that the discharge end of the conveying hose is positioned, the stability of the discharge end is guaranteed, and the material conveying precision is improved.

The principle of peristaltic pump promotes the material through continuous circulating's extrusion force and realizes carrying, and more conventional mode is exactly through equidistant setting a plurality of gyro wheels (roller) realization on same circumference, the utility model discloses in also adopted the structure of gyro wheel, specific, hose pay-off roller components includes pay-off gyro wheel support, two at least pay-off gyro wheels, pay-off gyro wheel driving motor and apron, the pay-off gyro wheel is along circumference evenly distributed on the pay-off gyro wheel support, and pay-off gyro wheel driving motor can drive the pay-off gyro wheel through the pay-off gyro wheel support and rotate along circumference, the apron covers and establishes in the outside of pay-off gyro wheel support and be used for supporting and protecting the pay-off gyro wheel to inside pay-off gyro wheel support.

A control method of a peristaltic pump comprises the peristaltic pump, and further comprises a feeding stage and a stopping stage, wherein,

the feeding stage comprises the following steps:

when feeding, the chuck of the pipe clamping mechanism is far away from the clamping plate and is reset to the initial position, and the discharge end of the material conveying hose is in a relaxed open state; the sliding pressing block of the resettable extrusion mechanism is pressed downwards to clamp the feeding part of the material conveying hose between the sliding pressing block and the hose feeding roller assembly, the feeding roller of the hose feeding roller assembly starts to rotate to extrude the material conveying hose to start conveying materials, and when the conveyed materials (liquid or paste media) meet requirements, the stopping stage is started.

The stop phase comprises the following steps:

after the conveying is finished, firstly, the feeding roller drives the motor to stop rotating, and the feeding roller stops feeding; when the feeding roller stops running, the materials in the pipe are not continuously transmitted; the chuck roller drives the motor to rotate, drives the chuck roller to rotate, pushes the chuck slider to drive the chuck to penetrate through a limiting hole of the chuck limiting plate, and enables the chuck to be close to the material conveying hose until the material conveying hose is clamped and cut off at the discharge end; then, the resettable extrusion mechanism resets, the cam is lifted to the highest position, the sliding pressing block is far away from the material conveying hose and lifted to the initial position, and the feeding part of the material conveying hose is in an uncompressed state; meanwhile, the feeding roller is reset and rotates to the initial position at the nearest angle to wait for entering the next material conveying period.

Further, in order to ensure the conveying precision, an emptying stage is also included before the feeding stage, and the emptying stage specifically comprises the following steps:

firstly, a chuck of a pipe clamping mechanism is loosened and is positioned at an initial position, a sliding pressing block of a resettable extrusion mechanism is pressed downwards to clamp a feeding part of a material conveying hose between the sliding pressing block and a hose feeding roller assembly, a feeding roller of the hose feeding roller assembly starts to rotate for feeding, so that the material is filled in the material conveying hose, and gas in the material conveying hose is discharged; then, the discharge end of the material conveying hose is clamped and closed by a chuck of the pipe clamping mechanism, and the hose feeding roller assembly stops feeding; and the resettable extrusion mechanism and the hose feeding roller assembly are reset to the initial positions.

The pipe clamping mechanism clamps the discharge end of the conveying hose, and can prevent material backflow, material leakage, material dripping and the like besides closing the discharge end to stop feeding.

The utility model has the advantages that: the utility model provides a pair of high accuracy rotation type partial shipment peristaltic pump and control method can reach the medium volume of carrying at every turn through the motion control and at more accurate within range, after the action each time, each mechanism all resets, and the initial position of pay-off is fixed at every turn, and the precision of extruding hose operation control always than traditional peristaltic pump is higher, and this rotation type is compared again in the efficiency that straight line endless mode came higher.

In addition, after the conveying is finished, the hose feeding roller assembly and the resettable extrusion mechanism are reset, so that the conveying hose is in a loose state and cannot be in an extrusion deformation state all the time, the abrasion deformation of the conveying hose is reduced, and the control precision can be further improved.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of a preferred embodiment of the present invention.

FIG. 2 is a schematic view showing the construction of a feed hose.

Fig. 3 is a schematic view of the internal structure of the peristaltic pump.

Fig. 4 is a schematic structural view of the resettable pressing mechanism.

FIG. 5 is a schematic view of the structure of the sliding compact.

Fig. 6 is a schematic structural diagram of the elastic guide resetting mechanism.

Fig. 7 is a schematic view of the structure of the base plate.

Fig. 8 is a schematic structural view of the hose support mechanism.

Fig. 9 is a schematic view of the structure of the hose feed roller assembly.

Fig. 10 is a schematic view of the construction of the hose feed roller assembly (without the cover plate).

Fig. 11 is a schematic perspective view of the pipe clamping mechanism.

FIG. 12 is a front view schematically showing the structure of the pipe clamping mechanism (without the feed hose).

In the figure: 100. pump base, 200, delivery hose, 201, feeding part, 202, feeding end, 203, discharging end, 300, hose feeding roller component, 400, resettable extrusion mechanism, 500, pipe clamping mechanism, 1, hose internal support, 2, hose guide sleeve, 3, cam, 4, cam support, 5, cam driving motor, 6, sliding press block, 61, arc extrusion surface, 62, cam abutting surface, 63, guide hole, 7, elastic guide resetting mechanism, 71, press block guide column, 72, press block guide sleeve, 73, resetting spring, 74, spring mounting block, 8, feeding roller support, 9, feeding roller, 10, feeding roller driving motor, 11, cover plate, 12, hose support, 121, C-shaped groove, 13, bottom plate, 131, first supporting part, 132, second supporting part, 133, fixing press block, 14, chuck, 15, clamping plate, 16, chuck guide column, 17, hose feeding roller component, The pipe clamp comprises a clamp roller support 18, a clamp roller 19, a clamp roller driving motor 20, a clamp sliding block 21, a clamp limiting plate 211, a limiting hole 22, a hose limiting pressing strip 221, a bending part 23 and a pipe clamp seat.

Detailed Description

The present invention will now be described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, and merely illustrates the basic structure of the present invention in a schematic manner, and therefore it shows only the constitution related to the present invention.

As shown in fig. 1-3, the high-precision rotary split charging peristaltic pump of the present invention comprises a pump base 100, and a hose feeding roller assembly 300, a feeding hose 200, a resettable squeezing mechanism 400 and a pipe clamping mechanism 500, which are disposed on the pump base 100, wherein, as shown in fig. 2, the feeding hose 200 comprises a feeding end 202, a feeding portion 201 and a discharging end 203, which are connected in sequence, the feeding end 202 is mainly connected to a feeding device for inputting materials; the feeding part 201 is used for deforming the hose through extrusion force so as to provide power for material flowing and realize the conveying of materials and the accurate control of feeding amount; the discharge end 203 is used for outputting and quantitatively supplying materials to downstream devices and equipment. Fig. 2 is a schematic view showing a structure of a material transfer hose 200 according to the present invention, and the shape of the material transfer hose 200 includes, but is not limited to, that shown in fig. 2, and the feeding end 202 and the discharging end 203 thereof may be oriented in different directions. The conveying hose 200 is coiled on the periphery of the hose feeding roller assembly 300 along the circumferential direction, the resettable extrusion mechanism 400 can be extruded on the conveying hose 200 on the periphery of the hose feeding roller assembly 300, the conveying hose 200 between the resettable extrusion mechanism 400 and the hose feeding roller assembly 300 forms a feeding portion 201, one end of the feeding portion 201 extends outwards to form a feeding end 202, the other end extends outwards to form a discharging end 203, liquid materials in the pipe enter from the feeding end 202 and are output by the discharging end 203 through the feeding portion 201, the pipe clamping mechanism 500 is arranged on the conveying hose 200 between the discharging end 203 and the feeding portion 201, and when the feeding is stopped, the pipe clamping mechanism 500 is used for clamping the conveying hose 200, and meanwhile, the deformation of the feeding portion 201 and the turn-off of the discharging end 203 are realized.

As shown in fig. 4, the resettable extrusion mechanism 400 includes a sliding press block 6, a slide block compression driving mechanism and an elastic guide resetting mechanism 7, as shown in fig. 5, the sliding press block 6 is right opposite to the arc-shaped extrusion surface 61 arranged on one side of the hose feeding roller assembly 300, a cam abutting surface 62 is arranged on one side of the arc-shaped extrusion surface 61, guide holes 63 are respectively arranged at the left end and the right end of the sliding press block 6, a press block guide sleeve 72 is arranged in each guide hole 63, and the press block guide sleeve 72 is sleeved on a press block guide column 71 and is slidably connected with the press block guide column 71. The sliding press blocks 6 on the left side and the right side of the arc-shaped extrusion surface 61 are supported on the elastic guide resetting mechanism 7, the slide block pressing driving mechanism can generate driving force to drive the sliding press blocks 6 to move on the elastic guide resetting mechanism 7 towards the direction close to the feeding part 201, the feeding part 201 is pressed between the sliding press blocks 6 and the hose feeding roller component 300, the elastic guide resetting mechanism 7 can generate elastic potential energy for enabling the sliding press blocks 6 to be far away from the feeding part 201 when the sliding press blocks 6 press the feeding part 201, and after the driving force of the slide block pressing driving mechanism on the sliding press blocks 6 disappears, the sliding press blocks 6 are reset to the initial position under the action of the elastic potential energy of the elastic guide resetting mechanism 7.

As shown in fig. 4, the slide block pressing driving mechanism includes a cam 3, a cam bracket 4 and a cam driving motor 5, the cam 3 is connected to an output shaft of the cam driving motor 5 and supported on the pump base 100 through the cam bracket 4, the cam driving motor 5 can drive the cam 3 to swing on the cam bracket 4, a curved surface of a swing end of the cam 3 can abut against a cam abutting surface 62 of the sliding pressing block 6 and make the sliding pressing block 6 move close to the hose feeding roller assembly 300, and after the cam 3 swings upwards to separate from the sliding pressing block 6, the sliding pressing block 6 can move to an initial position under the action of the elastic guiding and resetting mechanism 7. In this embodiment, a small roller is arranged on the curved surface of the swing end of the cam 3, and the friction between the cam 3 and the cam abutting surface 62 is reduced by rolling of the small roller, so that the action is smoother.

As shown in fig. 6, the elastic guide resetting mechanisms 7 are used for resetting the sliding pressing block 6 to the initial position, specifically, the elastic guide resetting mechanisms 7 are two sets, are installed on the pump base 100 through the bottom plate 13 and are respectively arranged on the left side and the right side of the sliding pressing block 6, each set of elastic guide resetting mechanism 7 comprises a pressing block guide column 71, a pressing block guide sleeve 72 and a resetting spring 73, as shown in fig. 7, a first supporting part 131, a second supporting part 132 and a fixed pressing block 133 are arranged on the bottom plate 13 in parallel, wherein the first supporting part 131 and the second supporting part 132 are used for installing the elastic guide resetting mechanism 7, and one side of the fixed pressing block 133 facing the feeding roller 9 is provided with a roller track arc surface. Briquetting guide post 71's upper and lower both ends are fixed respectively on first supporting part 131 and second supporting part 132 of bottom plate 13, and first supporting part 131 is close to cam 3 one side, and second supporting part 132 is close to roller components one side, briquetting uide bushing 72 inlays in slip briquetting 6, and overlaps and establish on briquetting guide post 71, and briquetting uide bushing 72 can drive slip briquetting 6 and slide along the axis direction on briquetting guide post 71, reset spring 73 supports the one side that is equipped with arc extruded surface 61 at slip briquetting 6, and is located between slip briquetting 6 and the second supporting part 132. In order to facilitate the installation of the press block guide column 71, U-shaped openings are formed in the first support portion 131 and the second support portion 132, and the upper and lower ends of the press block guide column 71 are fixed in the U-shaped openings by rectangular pieces and screws. The return spring 73 is two inside and outside, and the one end of inboard return spring 73 is directly installed on second supporting part 132, and in order to dodge the U-shaped opening on second supporting part 132, increased spring installation piece 74 on the side of second supporting part 132 near the gyro wheel to the installation of outside return spring 73 is convenient for.

As shown in fig. 4 and 8, a hose support mechanism is arranged on one side of the bottom plate 13 away from the cam 3, the hose support mechanism comprises a hose support 12, the hose support 12 is fixed on the pump base 100, and the left and right sides of the hose support are provided with C-shaped grooves 121, and the delivery hose 200 is embedded in the C-shaped grooves 121 to keep the position thereof stable; in order to avoid the mutual approach of the material conveying hoses 200, the outer side of the hose support 12 is further provided with a hose inner support 1 and a hose guide sleeve 2, the hose inner support 1 is located at the inner ring of the material conveying hose 200, the left end and the right end of the hose inner support are also provided with C-shaped grooves 121, the hose guide sleeve 2 is embedded in the C-shaped grooves 121, and the feeding end 202 and the discharging end 203 of the material conveying hose 200 respectively penetrate through the hose guide sleeve 2 and are used for limiting and positioning the material conveying hose 200 and facilitating the installation of the cover plate 11 of the roller assembly.

The principle of the peristaltic pump is that the material is pushed by continuous circulating extrusion force to realize conveying, and the conventional mode is realized by arranging a plurality of rollers (rollers) on the same circumference at equal intervals, as shown in fig. 9 and 10, the utility model discloses a structure of the rollers is also adopted, specifically, the hose feeding roller assembly 300 includes a feeding roller bracket 8, at least two feeding rollers 9, a feeding roller driving motor 10 and a cover plate 11, in this embodiment, four feeding rollers 9 uniformly distributed along the circumference are adopted, and the feeding efficiency and precision can be ensured; feeding roller 9 is along circumference evenly distributed on feeding roller support 8, and feeding roller driving motor 10 can drive feeding roller 9 along the circumference rotation through feeding roller support 8, apron 11 covers and establishes and be used for supporting inside feeding roller support 8 and protect feeding roller 9 in the outside of feeding roller support 8.

As shown in fig. 11-12, the pipe clamping mechanism 500 comprises a clamping head 14, a clamping plate 15, and a clamping head driving mechanism, wherein the clamping head 14 and the clamping plate 15 are respectively disposed at two sides of the delivery hose 200 at the discharge end 203, and the clamping head driving mechanism can drive the clamping head 14 to approach the clamping plate 15 to realize clamping closing of the discharge end 203, or drive the clamping head 14 to move away from the clamping plate 15 to realize releasing opening of the discharge end 203. Chuck actuating mechanism includes pipe holder 23, chuck guide 16, chuck roller subassembly, chuck slider 20 and chuck limiting plate 21, and wherein, chuck guide 16 is through pipe holder 23 and the relative fixed connection of pump mount 100, and the both sides sliding connection of chuck slider 20 is on chuck guide 16, and drives chuck slider 20 reciprocating motion on chuck guide 16 through chuck roller subassembly, chuck limiting plate 21 is fixed in the one end that pipe holder 23 is close to defeated material hose 200, and chuck limiting plate 21 middle part is equipped with the chuck guiding hole, 14 one end of chuck is connected on chuck slider 20, and the other end is just to the chuck guiding hole, and can be in the downthehole concertina movement of chuck guiding under the drive of chuck slider 20, just chuck limiting plate 21 and splint 15 parallel arrangement form defeated material hose 200's spacing passageway. The chuck roller assembly includes a chuck roller bracket 17, at least one chuck roller 18 and a chuck roller driving motor 19, in this embodiment, two chuck rollers 18 are symmetrically arranged along a radial direction, and a chuck slider 20 is provided with a circular arc track groove matched with the chuck rollers 18. The upper end and the lower end of the chuck roller 18 are connected to the chuck roller support 17, and the chuck roller driving motor 19 drives the chuck roller 18 to rotate circumferentially through the chuck roller support 17, so as to push the chuck slider 20 to move on the chuck guide post 16, thereby realizing the clamping and turning-off of the material conveying hose 200.

In order to ensure the stability of the hose discharging end 203, the pipe clamping mechanism 500 further comprises at least one hose limiting bead 22, the hose limiting bead 22 is flush with the clamping plate 15 and located on one side of the material conveying hose 200, the bottom of the hose limiting bead 22 is fixed on the pump base 100, the top of the hose limiting bead extends upwards and is provided with a bending part 221 facing the material conveying hose 200, and the bending part 221 and the pipe clamping base 23 jointly form a limiting hole 211 of the material conveying hose 200. During assembly, the discharge end 203 of the material conveying hose 200 penetrates through the limiting hole 211 and the limiting channel, when the material conveying hose 200 is filled with materials, the material conveying hose 200 expands, the bent portion 221 presses the material conveying hose 200 on the pipe clamp seat 23, meanwhile, the clamp head limiting plate 21 and the clamp plate 15 clamp the material conveying hose 200 in the limiting channel, accordingly, the discharge end 203 of the material conveying hose 200 is located, the stability of the discharge end 203 is guaranteed, and the precision of material conveying is improved.

A method for controlling a peristaltic pump, including the above peristaltic pump, further including an emptying phase, a feeding phase and a stopping phase, will now be described in detail with reference to the structure of the peristaltic pump in this embodiment, the steps of each phase are as follows:

the peristaltic pump is gone up the electricity and is opened the machine and then reset to it earlier, resets back each mechanism and all is in initial position, each part initial position in this embodiment: the cam 3 is lifted to the highest position, the sliding pressing block 6 is lifted to the position of separating from the material conveying hose 200, the feeding roller 9 is rotated to the set initial position, and the clamping head 14 is lifted to the position of separating from the material conveying hose 200. The starting position may be calibrated by means of position sensors, encoders, etc.

In order to ensure the uniform material transportation and the precision, the air in the material transporting hose 200 needs to be evacuated to fill the material in the hose, so that the evacuation stage specifically comprises the following steps:

firstly, the chuck 14 of the pipe clamping mechanism 500 is kept at the initial position, the cam driving motor 5 rotates to drive the cam 3 to swing downwards from the highest position to the lowest position, the curved surface of the swing end of the cam 3 abuts against the cam abutting surface 62 of the sliding pressing block 6, the sliding pressing block 6 is pushed to press downwards to clamp the feeding part 201 of the material conveying hose 200 between the sliding pressing block 6 and the feeding roller 9, the feeding roller 9 starts to rotate for feeding, so that the material is filled in the material conveying hose 200, and the gas in the material conveying hose 200 is discharged; at this time, the pipe clamping mechanism 500 does not press the feed hose 200, and therefore, does not affect the discharge of the gas. After the gas in the pipe is exhausted, the chuck roller driving motor 19 rotates to drive the chuck roller 18 to rotate, the chuck roller 18 pushes the chuck slide block 20 to drive the chuck 14 to pass through the limiting hole 211 of the chuck limiting plate 21, and the chuck 14 is close to the delivery hose 200 until the discharge end 203 of the delivery hose 200 is clamped and closed; meanwhile, the feeding roller driving motor 10 stops rotating, the feeding roller 9 stops feeding, the cam driving motor 5 rotates reversely, and the cam 3 and the sliding pressing block 6 are reset to the initial positions; the feed roller driving motor 10 rotates at the nearest angle to drive the feed roller 9 to return to the initial position.

After the gas in the pipe is emptied, the normal quantitative feeding stage is carried out, the feeding amount is set by a customer according to the requirement, and the feeding stage comprises the following steps:

during feeding, the chuck roller driving motor 19 rotates reversely to drive the chuck roller 18 to rotate reversely to the initial position, the chuck roller 18 pulls the chuck slider 20 to retract from the limiting hole 211 to be far away from the clamping plate 15 and reset to the initial position, the chuck 14 is far away from the material conveying hose 200, and the discharge end 203 of the material conveying hose 200 is in a relaxed open state; the cam driving motor 5 rotates to drive the cam 3 to swing downwards from the highest position to the lowest position, the curved surface at the swing end of the cam 3 abuts against the cam abutting surface 62 of the sliding pressing block 6 to force the sliding pressing block 6 to move to the limited position in the direction of the feeding roller 9, the sliding pressing block 6 presses downwards to clamp the feeding part 201 of the material conveying hose 200 between the sliding pressing block 6 and the feeding roller 9, the feeding roller 9 starts to rotate according to the set number of turns or angle to extrude the material conveying hose 200 to start conveying materials, and when the conveyed materials (liquid or paste media) meet the requirements, the material conveying device enters a stop stage.

The stop phase comprises the following steps:

after the conveying is finished, firstly, the feeding roller driving motor 10 stops rotating, and the feeding roller 9 stops feeding; when the feeding roller 9 stops running, the materials in the pipe are not continuously transmitted; the chuck roller driving motor 19 rotates to drive the chuck roller 18 to rotate, the chuck roller 18 pushes the chuck slider 20 to drive the chuck 14 to pass through the limiting hole 211 of the chuck limiting plate 21, and the chuck 14 is close to the material conveying hose 200 until the discharge end 203 of the material conveying hose 200 is clamped and closed; when the pipe clamping mechanism 500 presses the material conveying hose 200 to a position (the material conveying hose 200 is pressed to control the conveying medium not to flow), the resettable pressing mechanism 400 resets, the cam 3 rotates by a certain angle and is lifted to the highest position, at the moment, because the cam 3 leaves the sliding pressing block 6, the sliding pressing block 6 moves towards the cam 3 under the spring force of the built-in reset spring 73, the sliding pressing block 6 is far away from the material conveying hose 200 and is lifted to the initial position, and the feeding part 201 of the material conveying hose 200 is in an uncompressed state; at the same time, the feed roller 9 is reset, rotated to the initial position at the nearest angle, and waits for the next material conveying period.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a high accuracy rotation type partial shipment peristaltic pump which characterized in that: including the pump seat to and set up hose pay-off roller components, defeated material hose, the extrusion mechanism that can reset and the double-layered pipe mechanism on the pump seat, wherein, defeated material hose coils in the periphery of hose pay-off roller components along the circumferencial direction, the extrusion mechanism that can reset can extrude on the defeated material hose of hose pay-off roller components outlying, and can reset the defeated material hose between extrusion mechanism and the hose pay-off roller components and form pay-off portion, pay-off portion one end outwards extends and forms the feed end, and the other end outwards extends and forms the discharge end, press from both sides pipe mechanism and set up on the defeated material hose between discharge end and pay-off portion, when stopping the pay-off, double-layered pipe mechanism is used for pressing from both sides tight defeated material hose, realizes the reduction of pay-off portion deformation and the shutoff of discharge end simultaneously.

2. A high precision rotary dispensing peristaltic pump as recited in claim 1, wherein: the resettable extrusion mechanism comprises a sliding pressing block, a sliding block pressing driving mechanism and an elastic guiding resetting mechanism, an arc-shaped extrusion surface is arranged on one side of the sliding pressing block, which is opposite to the hose feeding roller component, a cam abutting surface is arranged on one side of the sliding pressing block, which is back to the arc-shaped extrusion surface, the sliding press blocks on the left side and the right side of the arc-shaped extrusion surface are supported on the elastic guide resetting mechanism, the slide block pressing driving mechanism can generate driving force to drive the sliding press blocks to move on the elastic guide resetting mechanism towards the direction close to the feeding part, the feeding part is pressed between the sliding pressing block and the hose feeding roller component, the elastic guiding reset mechanism can generate elastic potential energy which enables the sliding pressing block to be far away from the feeding part when the sliding pressing block presses the feeding part, and when the driving force of the sliding block pressing driving mechanism acting on the sliding pressing block disappears, the sliding pressing block is reset to the initial position under the action of the elastic potential energy of the elastic guiding reset mechanism.

3. A high precision rotary dispensing peristaltic pump as recited in claim 2, wherein: the slider compresses tightly actuating mechanism and includes cam, cam support and cam driving motor, the cam is connected on cam driving motor's output shaft, and supports on the pump stand through the cam support, and cam driving motor can drive the cam and swing on the cam support, the swing end curved surface of cam can support on the cam butt face of slip briquetting and make the motion that the slip briquetting produced and is close to hose pay-off roller components, and after the cam upwards swung and breaks away from the slip briquetting, the slip briquetting can move to the initial position under the effect of elastic guide canceling release mechanical system.

4. A high precision rotary dispensing peristaltic pump as set forth in claim 3, wherein: elastic guide canceling release mechanical system is two sets ofly, installs on the pump seat through the bottom plate, and sets up respectively in the left and right sides of slip briquetting, and every elastic guide canceling release mechanical system of group includes briquetting guide post, briquetting uide bushing and reset spring, the upper and lower both ends of briquetting guide post are fixed respectively on the first supporting part and the second supporting part of bottom plate, the briquetting uide bushing inlays in the sliding pressure piece, and the cover is established on the briquetting guide post, and the briquetting uide bushing can drive the slip briquetting and slide along the axis direction on the briquetting guide post, reset spring supports the one side that is equipped with the arc extruded surface at the slip briquetting, and is located between slip briquetting and the second supporting part.

5. A high precision rotary dispensing peristaltic pump as recited in claim 1, wherein: the pipe clamping mechanism comprises a chuck, a clamping plate and a chuck driving mechanism, wherein the chuck and the clamping plate are respectively arranged on two sides of a conveying hose at the discharge end, the chuck driving mechanism can drive the chuck to be close to the clamping and turning-off of the discharge end realized by the clamping plate, or drive the chuck to be far away from the loosening and opening of the discharge end realized by the clamping plate.

6. A high precision rotary dispensing peristaltic pump as set forth in claim 5, wherein: chuck actuating mechanism includes pipe holder, chuck guide post, chuck roller components, chuck slider and chuck limiting plate, and wherein, the chuck guide post is through pipe holder and the relatively fixed connection of pump seat, and chuck slider both sides sliding connection is on the chuck guide post, and drives chuck slider reciprocating motion on the chuck guide post through chuck roller components, the chuck limiting plate is fixed in the one end that the pipe holder is close to the conveying hose, and chuck limiting plate middle part is equipped with the chuck guiding hole, chuck one end is connected on chuck slider, and the other end is just to the chuck guiding hole, and can be in the downthehole concertina movement of chuck guiding under chuck slider's drive, just chuck limiting plate and splint parallel arrangement form the spacing passageway of conveying hose.

7. A high accuracy rotary dispensing peristaltic pump as set forth in claim 6, wherein: the pipe clamping mechanism further comprises at least one hose limiting pressing strip, the hose limiting pressing strip is parallel to the clamping plate and located on one side of the conveying hose, the bottom of the hose limiting pressing strip is fixed on the pump seat, the top of the hose limiting pressing strip extends upwards and is provided with a bending portion facing the conveying hose, and the bending portion and the pipe clamping seat jointly form a limiting hole of the conveying hose.

8. A high precision rotary dispensing peristaltic pump as set forth in claim 3, wherein: hose pay-off roller assembly includes pay-off roller support, two at least pay-off rollers, pay-off roller driving motor and apron, the pay-off roller is along circumference evenly distributed on the pay-off roller support, and pay-off roller driving motor can drive the pay-off roller through the pay-off roller support and rotate along circumference, the outside at the pay-off roller support is established to the apron cover.