CN111456930A - Peristaltic pump head, peristaltic pump and flow adjusting method of peristaltic pump - Google Patents

Peristaltic pump head, peristaltic pump and flow adjusting method of peristaltic pump Download PDF

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Publication number
CN111456930A
CN111456930A CN202010368184.2A CN202010368184A CN111456930A CN 111456930 A CN111456930 A CN 111456930A CN 202010368184 A CN202010368184 A CN 202010368184A CN 111456930 A CN111456930 A CN 111456930A
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CN
China
Prior art keywords
adjusting
elastic hose
peristaltic pump
rotor
self
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Pending
Application number
CN202010368184.2A
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Chinese (zh)
Inventor
乔宝石
张彦峰
王瑞鹏
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Baoding Lead Fluid Technology Co ltd
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Baoding Lead Fluid Technology Co ltd
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Priority to CN202010368184.2A priority Critical patent/CN111456930A/en
Publication of CN111456930A publication Critical patent/CN111456930A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
    • F04B43/1253—Machines, pumps, or pumping installations having flexible working members having peristaltic action by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing
    • F04B43/1261—Machines, pumps, or pumping installations having flexible working members having peristaltic action by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing the rollers being placed at the outside of the tubular flexible member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/0009—Special features
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/0009—Special features
    • F04B43/0081—Special features systems, control, safety measures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/20—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by changing the driving speed

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)

Abstract

The invention discloses a peristaltic pump head, a peristaltic pump and a flow regulating method of the peristaltic pump, wherein the peristaltic pump head comprises a shell, a rotating shaft and a rotor device, wherein a first opening and a second opening are arranged on the shell and used as an inlet and an outlet of an elastic hose, the rotating shaft is arranged in the shell, the rotor device is sleeved with the rotating shaft, the elastic hose passes through the first opening and the second opening and is arranged between the rotor device and the shell, and the rotor device can extrude the elastic hose when in corresponding positions; the peristaltic pump comprises a rotor device and a rotor, wherein the rotor device comprises a rotor support, an adjusting mechanism and a rotor, the rotor support is sleeved with a rotating shaft, the rotor is connected with the rotating shaft through the rotor support, and the rotor can extrude an elastic hose when in a corresponding position.

Description

Peristaltic pump head, peristaltic pump and flow adjusting method of peristaltic pump
Technical Field
The application relates to the field of peristaltic pumps, in particular to a peristaltic pump head, a peristaltic pump and a flow adjusting method of the peristaltic pump.
Background
The peristaltic pump is used for conveying liquid or a solid-liquid mixture, and the principle is that the elastic hose is continuously pressed and released through the rotor, so that the purpose of conveying the liquid or the solid-liquid mixture is achieved. Along with the continuous expansion of the application field of peristaltic pump products, the market has more and more refined requirements on the adjustable range of the transmission flow of the peristaltic pump products, and the requirements on adjustable precision are higher and higher.
In the prior art, peristaltic pumps are generally divided into different sizes to cope with different levels of flow demand. For peristaltic pumps of the same type, the output flow rate is the product of the output quantity of 1-circle rotation and the rotating speed, and when the rotating speed of the driver is fixed, the flow rate in a local range can be adjusted by replacing elastic hoses with different inner diameters; when the peristaltic pump model and the driver rotate at a certain speed, for the same model and the same inner diameter of the elastic hose, the conventional method is to change the inner diameter of the hose by stretching the elastic hose or to finely adjust the transmission flow by changing the extrusion degree of the elastic hose, but the method of adjusting the flow by stretching the length of the elastic hose or changing the extrusion degree of the elastic hose has obvious defects: 1. the elastic hose is stretched, the wall of the elastic hose is thinned while the inner diameter is changed, the working clearance of the peristaltic pump is influenced, the pressure bearing capacity of the elastic hose is reduced, the elastic hose is easy to break, and liquid flows into a pump head from the elastic hose, so that equipment failure and damage are caused; 2. the elastic hoses made of different materials have different tensile properties and poor universality; 3. the service life of the elastic hose subjected to stretching or extrusion degree increase is obviously reduced compared with that of the elastic hose not subjected to stretching or extrusion degree increase; 4. under the condition of not changing the model of the elastic hose, the requirement of any flow in an adjustable range cannot be met by changing the extrusion degree of the elastic hose.
The linear peristaltic pump is characterized in that the linear peristaltic pump is arranged in the prior art, the stroke of the extrusion part for extruding the elastic hose is changed to realize fine adjustment of flow, the structure and the working principle of the linear peristaltic pump are closer to those of an injection pump, the structure of the linear peristaltic pump is more complex than that of a traditional universal peristaltic pump, the requirement on the material of accessories and the realization cost of technology are much higher, the linear peristaltic pump cannot realize continuous fluid transmission, the working efficiency is not high, the application range of the linear peristaltic pump is limited, and the liquid volume transmission is still dominant through rotary driving in the application field of the peristaltic pump.
But the hose life can not be guaranteed in the time of the meticulous regulation to transmission flow under the condition of not changing hose pipe diameter to current rotation drive peristaltic pump product, consequently, under the prerequisite of not changing elastic hose model and internal diameter, how to find one kind can realize the accurate regulation to the flow, can guarantee elastic hose life again, can also do the easy simple structure of technique and fluid continuous transmission's of peristaltic pump flow control method and peristaltic pump product, become the technological problem that this field awaits a urgent need to be solved.
Disclosure of Invention
The invention aims to provide a peristaltic pump head, a peristaltic pump and a peristaltic pump flow adjusting method aiming at the defects of the prior art.
The peristaltic pump head comprises a shell, a rotating shaft and a rotor device, wherein a first opening and a second opening are arranged on the shell and used as an inlet port and an outlet port of an elastic hose, the rotating shaft is arranged in the shell, the rotor device is sleeved with the rotating shaft, the elastic hose penetrates through the first opening and the second opening and is arranged between the rotor device and the shell, and the rotor device can extrude the elastic hose when in a corresponding position;
the rotor device comprises a rotor bracket, an adjusting mechanism and a rotor, the rotor bracket is sleeved with the rotating shaft, the rotor is connected with the rotating shaft through the rotor bracket, and the rotor can extrude the elastic hose when in a corresponding position;
the adjusting mechanism passes through the rotor bracket with the pivot is connected, adjusting mechanism fixed set up in on the rotor bracket, adjusting mechanism can to the elastic hose removes and extrudees when relevant position the elastic hose, adjusting mechanism set up in the concentric circumference of rotor, adjusting mechanism has locking structure, the last measuring mechanism that is provided with of adjusting mechanism.
Furthermore, the adjusting mechanism comprises a self-locking type telescopic structure and an adjusting piece, one end of the self-locking type telescopic structure is connected with the rotating shaft through the rotor support, the other end of the self-locking type telescopic structure is connected with the adjusting piece, and the self-locking type telescopic structure can control the adjusting piece to move towards the elastic hose and enable the adjusting piece to extrude the elastic hose when in a corresponding position.
Furthermore, the adjusting part is an adjusting wheel, the self-locking telescopic structure is a self-locking telescopic rod, one end of the self-locking telescopic rod is connected with the rotating shaft through the rotor support, the other end of the self-locking telescopic rod is connected with the adjusting wheel, and the self-locking telescopic rod can control the adjusting wheel to move towards the elastic hose and enable the adjusting wheel to extrude the elastic hose when in a corresponding position.
Furthermore, the regulating part is an adjusting block, the self-locking telescopic structure is a self-locking telescopic rod, one end of the self-locking telescopic rod is connected with the rotating shaft through the rotor support, the other end of the self-locking telescopic rod is connected with the adjusting block, the self-locking telescopic rod can control the adjusting block to move towards the elastic hose and enable the adjusting block to extrude the elastic hose when in a corresponding position, the extruding surfaces of the adjusting block and the elastic hose are smooth arc surfaces, and the smooth arc surfaces are convex towards the direction of the elastic hose.
Further, the adjusting mechanism comprises a slide rail, a first pressure bar, a second pressure bar, a first pressing block and a second pressing block, the slide rail is arranged on the rotor support, the first pressure bar and the second pressure bar are respectively arranged on two sides of the slide rail in parallel and are connected with the slide rail in a sliding manner, the first pressing block and the second pressing block are respectively connected with the first pressure bar and the second pressure bar, the elastic hose penetrates through the space between the first pressing block and the second pressing block, the first pressure bar and the second pressure bar can move on the slide rail and control the first pressing block and the second pressing block to move towards the elastic hose and enable the adjusting block to extrude the elastic hose at corresponding positions, extrusion surfaces of the first pressing block and the second pressing block and the elastic hose are smooth arc surfaces, and the smooth arc surfaces are convex towards the direction of the elastic hose, the first pressure lever and the second pressure lever can be locked on the slide rail through nuts.
Further, the rotor support includes first rim plate, second rim plate and pivot sleeve pipe, the parallel cup joint of first rim plate and second rim plate is in the pivot, the pivot sleeve pipe cup joint in the pivot between first rim plate and the second rim plate, and with first rim plate and second rim plate are connected, first rim plate and even distribution has the pinhole on the second rim plate same position, the pinhole is located same periphery, the rotor passes through the pinhole with first rim plate and second rim plate rotate to be connected, the axis of rotor with the axis of pivot is parallel.
Furthermore, the number of the rotors and the number of the adjusting mechanisms are multiple, the rotors are uniformly distributed on the same circumferential surface, and the adjusting mechanisms are fixedly arranged at the same positions between every two adjacent rotors.
Furthermore, a measuring mechanism is arranged on the adjusting mechanism.
A peristaltic pump comprises the peristaltic pump head.
The flow regulating method of the peristaltic pump comprises the following steps:
step 1, preliminarily adjusting the flow of an elastic hose in a pump head of the peristaltic pump by adjusting the rotating speed of a rotating shaft;
and 2, adjusting the position of an adjusting piece in the pump head of the peristaltic pump through an adjusting mechanism to enable the adjusting piece to extrude the elastic hose, and finely adjusting the flow of the elastic hose in the pump head of the peristaltic pump.
Compared with the prior art, the peristaltic pump head, the peristaltic pump and the flow adjusting method of the peristaltic pump have the following remarkable advantages:
1. the flow regulation of the peristaltic pump is stepless regulation, and the required arbitrary flow can be regulated in a continuous flow regulation interval by regulating the flow of each pillow on the premise of not changing the model and the inner diameter of a pump head or an elastic hose of the peristaltic pump, so that the continuous regulation of the transmission flow of the peristaltic pump is realized, and the flow regulation range is expanded;
2. when multiple pump heads are in cascade operation, the peristaltic pump can more accurately reduce errors of flow among different channels, and ensures the consistency of flow among the channels of the pump heads.
3. The pump head adjusting piece of the peristaltic pump is used for carrying out non-sealing extrusion adjustment on each pillow, and the service life of the elastic hose can be ensured while the flow is adjusted.
Drawings
FIG. 1 is a schematic diagram of a peristaltic pump head structure when an adjusting member of the peristaltic pump head is an adjusting wheel according to the present invention;
FIG. 2 is a schematic diagram of a peristaltic pump head structure when an adjusting piece of the peristaltic pump head is an adjusting block according to the present invention;
fig. 3 is a schematic diagram of a peristaltic pump head structure when an adjusting piece of the peristaltic pump head is a pressing block.
The labels in the figure are: 1-a housing, 11-a first opening, 12-a second opening; 2-a rotating shaft; 3-rotor device, 31-rotor support, 32-rotor, 33-adjusting mechanism, 331-self-locking type telescopic structure, 332-adjusting piece, 333-sliding rail, 334-first pressure bar, 335-second pressure bar, 336-first pressure block, 337-second pressure block; 4-an elastic hose; 5-extrusion layer.
Detailed Description
Example 1:
the peristaltic pump flow adjusting method comprises the following steps:
step 1, primarily adjusting the flow of an elastic hose in a pump head of a peristaltic pump by changing the rotating speed of a rotating shaft;
and 2, adjusting the position of an adjusting piece in the pump head of the peristaltic pump through an adjusting mechanism to enable the adjusting piece to extrude the elastic hose, and finely adjusting the flow of the elastic hose in the pump head of the peristaltic pump.
Further, step 2 includes the following steps:
and 2.1, the position of the adjusting mechanism is adjusted to enable the elastic hose to be extruded by the adjusting piece, the elastic hose is partially deformed, and the volume of the elastic hose is changed, so that the liquid amount contained by the elastic hose is controlled, and the purpose of controlling the flow rate is achieved by controlling the liquid amount output by each pillow.
Through the matching of the step 1 and the step 2, the output flow of each pillow can be any value within the range from zero flow to the original liquid output amount of the elastic hose, and the stepless regulation of the output flow can be realized through the matching of the step 1 and the step 2.
In the above embodiment, when the same driver drives a plurality of peristaltic pump heads to operate in a cascade manner, by properly adjusting the position of the adjusting mechanism, the flow error can be reduced to the maximum extent without changing the inner diameter of the elastic hose, so that the flow rates of the elastic hoses in different peristaltic pump heads are basically the same.
Example 2:
the peristaltic pump flow adjusting method comprises the following steps:
step 1, primarily adjusting the flow of an elastic hose in a pump head of a peristaltic pump by changing the rotating speed of a rotating shaft;
and 2, adjusting the position of an adjusting piece in the pump head of the peristaltic pump through an adjusting mechanism to enable the adjusting piece to extrude the elastic hose, and finely adjusting the flow of the elastic hose in the pump head of the peristaltic pump.
Further, step 2 includes the following steps:
and 2.1, the position of the adjusting mechanism is adjusted, so that the elastic hose is extruded by the first adjusting block and the second adjusting block, the elastic hose is partially deformed, the volume of the elastic hose is changed, the liquid amount contained by the elastic hose is controlled, and the purpose of controlling the flow is achieved by controlling the liquid amount output by each pillow.
Through the matching of the step 1 and the step 2, the output flow of each pillow can be any value within the range from zero flow to the original liquid output amount of the elastic hose, and the stepless regulation of the output flow can be realized through the matching of the step 1 and the step 2.
In the above embodiment, when the same driver drives a plurality of peristaltic pump heads to operate in a cascade manner, by properly adjusting the position of the adjusting mechanism, the flow error can be reduced to the maximum extent without changing the inner diameter of the elastic hose, so that the flow rates of the elastic hoses in different peristaltic pump heads are basically the same.
Example 3:
as shown in fig. 1 and fig. 2, a peristaltic pump head based on the peristaltic pump flow rate adjusting method in embodiment 1 includes a housing 1, a rotating shaft 2, and a rotor device 3, where the housing 1 is provided with a first opening 11 and a second opening 12 as inlet and outlet ports of an elastic hose 4, the rotating shaft 2 is disposed inside the housing 1, the rotor device 3 is sleeved with the rotating shaft 2, the elastic hose 4 passes through the first opening 11 and the second opening 12 and is disposed between the rotor device 3 and the housing 1, and the rotor device 3 can press the elastic hose 4 when in a corresponding position;
the rotor device 3 comprises a rotor bracket 31, an adjusting mechanism 33 and a rotor 32, the rotor bracket 31 is sleeved with the rotating shaft 2, the rotor 32 is connected with the rotating shaft 2 through the rotor bracket 31, and the rotor 32 can extrude the elastic hose 4 at a corresponding position;
the adjusting mechanism 33 is connected with the rotating shaft 2 through the rotor bracket 31, the adjusting mechanism 33 is fixedly arranged on the rotor bracket 31, the adjusting mechanism 33 can move towards the elastic hose 4 and extrude the elastic hose 4 when in a corresponding position, the adjusting mechanism 33 is arranged in the concentric circumference of the rotor 32, and the adjusting mechanism 33 is provided with a locking structure.
Further, adjustment mechanism 33 is including locking-type extending structure 331 and regulating part 332, from locking-type extending structure 331 is for locking-type telescopic link, regulating part 332 is the regulating wheel, pass through from locking-type telescopic link one end rotor support 31 with pivot 2 is connected, from locking-type telescopic link the other end with the regulating wheel is connected, from locking-type telescopic link can control the regulating wheel to elastic hose 4 removes and can make when relevant position the regulating wheel extrusion elastic hose 4 can make elastic hose 4 volume change, the telescopic link can be through screw thread or friction auto-lock, be provided with measuring mechanism (not shown in the figure) on the telescopic link, like scale measurement, laser rangefinder etc. the regulating wheel can keep on fixed position, realizes accurate control flow.
In the above embodiment, a plurality of the rotors 32 and the adjusting mechanisms 33 are provided, the rotors 32 are uniformly distributed on the same circumferential surface, the adjusting mechanisms 33 are fixedly provided at the same positions between two adjacent rotors 32, a plurality of the adjusting mechanisms 33 can be provided between two adjacent rotors 32, the adjusting mechanisms 33 are distributed in the concentric circumferences of the rotors 32, and the more the number of the adjusting mechanisms 33 between two adjacent rotors 32 is, the more precise the flow rate adjustment is, and the less the loss of the elastic hose 4 is.
In the above embodiment, the regulating wheel can also be the regulating block, the regulating block with 4 extrusion faces of elastic hose are glossy arc surface, glossy arc face to 4 direction arch of elastic hose are used for reducing the regulating block is right 4 burdens of elastic hose when 4 extrudees of elastic hose reduce 4 losses of elastic hose, guarantee elastic hose 4's life.
In the above embodiment, the radial dimension R of the vertex of contact of the adjusting block or wheel with the elastic hose 41The relation between the inner diameter R of the housing 1, the diameter D of the outer wall of the elastic hose 4 and the wall thickness D of the elastic hose 4 is as follows: (R-D) is less than or equal to R1＜(R-2d)。
In the above embodiment, the extrusion layer 5 is disposed between the rotor device 3 and the housing 1, the extrusion layer 5 is fixedly disposed on the inner wall between the housing 1 and the rotor device 3, the elastic hose 4 is disposed between the rotor device 3 and the extrusion layer 5 through the first opening 11 and the second opening 12, and the radial dimension R of the vertex of the contact between the adjusting block or the adjusting wheel and the elastic hose 4 is the same as the radial dimension R of the vertex of the contact between the adjusting block or the adjusting wheel and the elastic hose 41The inner diameter R' of the extrusion layer 5, the outer wall diameter D of the elastic hose 4 and the wall thickness of the elastic hose 4The relationship of d is: r is not more than (R' -D)1< (R' -2d), the extrusion layer 5 can reduce the pressure to which the housing 1 is subjected, and prolong the service life of the housing 1.
In the above embodiment, the peristaltic pump head can also be connected to an external driving device, such as a driving motor, a hydraulic cylinder or a pneumatic cylinder, to realize the movement and self-locking of the telescopic rod.
Example 4:
as shown in fig. 3, a peristaltic pump according to the method for adjusting a flow rate of a peristaltic pump in embodiment 2, in this embodiment, the structure is the same as that in embodiment 3 except for an adjusting mechanism 33, and the adjusting mechanism 33 includes: the sliding rail 333 is arranged on the rotor bracket 31, the first pressure lever 334 and the second pressure lever 335 are respectively arranged on two sides of the sliding rail 333 in parallel and are slidably connected with the sliding rail 333, the first pressing block 336 and the second pressing block 337 are respectively connected with the first pressure lever 334 and the second pressure lever 335, the elastic hose 4 passes through the space between the first pressing block 336 and the second pressing block 337, the first pressing block 334 and the second pressing block 335 can move on the sliding rail 333 and control the first pressing block 336 and the second pressing block 337 to move towards the elastic hose 4 and can enable the adjusting block to press the elastic hose 4 at corresponding positions, and the pressing surfaces of the first pressing block 336 and the second pressing block 337 and the elastic hose 4 are smooth arc surfaces, the smooth arc surface protrudes towards the elastic hose 4, when the first pressing block 336 and the second pressing block 337 are in contact with the elastic hose 4, the elastic hose 4 can be squeezed into the space between the first pressing block 336 and the second pressing block 337 through the smooth arc surface, meanwhile, the loss of the elastic hose 4 can be reduced, the service life of the elastic hose 4 is ensured, the first pressing rod 334 and the second pressing rod 335 can control the first pressing block 336 and the second pressing block 337 to be pressed together, in the pressing process, the elastic hose 4 is squeezed by the first pressing block 336 and the second pressing block 337, the volume of the elastic hose 4 between two adjacent rotors 32 is changed, and measuring mechanisms such as scale measurement and laser ranging are arranged at two ends of the sliding rail 333, so that the moving distance of the first pressing rod 334 and the second pressing rod 335 can be determined, the first and second pressing rods 334 and 335 can be locked on the sliding rail 333 by nuts (not shown).
In the above embodiment, the number of the rotors 32 and the number of the adjusting mechanisms 33 are multiple, the rotors 32 are uniformly distributed on the same circumferential surface, the adjusting mechanisms 33 are fixedly arranged at the same positions between two adjacent rotors 32, the number of the adjusting mechanisms 33 can be multiple between two adjacent rotors 32, the adjusting mechanisms 33 are distributed in the concentric circumferences of the rotors 32, and the larger the number of the adjusting mechanisms 33 between two adjacent rotors 32 is, the more precise the flow rate adjustment is.
In the above embodiment, the radial dimension R between the first pressing piece 336 and the second pressing piece 3372The relation between the inner diameter R of the pump head shell 1 of the peristaltic pump and the diameter D of the outer wall of the elastic hose 4 is as follows: (R-1/3D) R is less than or equal to2< R, the axial distance d between the apexes of the first and second pressing pieces 336, 337 in contact with the elastic tube 41The relationship with the wall thickness d of the flexible hose 4 is: d1＞2d。
In the above embodiment, the extrusion layer 5 is disposed between the rotor device 3 and the housing 1, the extrusion layer 5 is fixedly disposed on the inner wall between the housing 1 and the rotor device 3, the elastic tube 4 is disposed between the rotor device 3 and the extrusion layer 5 through the first opening 11 and the second opening 12, and the radial dimension R between the first pressing piece 336 and the second pressing piece 337 is2The relationship between the inner diameter R' of the extruded layer 5 and the diameter D of the outer wall of the flexible hose 4 is: r is not more than (R' -1/3D)2< R', the axial distance d between the vertices of contact of said first and second pressure pieces 336, 337 with the elastic hose 41The relationship with the wall thickness d of the flexible hose 4 is: d1And the extrusion layer 5 can reduce the pressure on the shell 1 and prolong the service life of the shell 1.
In the above embodiment, the peristaltic pump head can also be connected to an external driving device, such as a driving motor, a hydraulic cylinder or a pneumatic cylinder, to realize the movement and self-locking of the first pressing rod 334 and the second pressing rod 335.
In the above embodiment, the first pressing piece 336 and the second pressing piece 337 can also be replaced by rollers, and rolling friction is used to replace sliding friction, so as to further reduce the wear of the elastic hose 4 and ensure the service life of the elastic hose 4.
The application also provides a peristaltic pump, which comprises the peristaltic pump head and the peristaltic pump flow adjusting method.
The above description is only for the preferred embodiment of the present invention and should not be construed as limiting the present invention, and various modifications and changes can be made by those skilled in the art without departing from the spirit and principle of the present invention, and any modifications, equivalents, improvements, etc. should be included in the scope of the claims of the present invention.

Claims (10)

1. A peristaltic pump head is characterized by comprising a shell, a rotating shaft and a rotor device, wherein a first opening and a second opening are arranged on the shell and used as an inlet and outlet port of an elastic hose;
the rotor device comprises a rotor bracket, an adjusting mechanism and a rotor, the rotor bracket is sleeved with the rotating shaft, the rotor is connected with the rotating shaft through the rotor bracket, and the rotor can extrude the elastic hose when in a corresponding position;
the adjusting mechanism passes through the rotor bracket with the pivot is connected, adjusting mechanism fixed set up in on the rotor bracket, adjusting mechanism can to the elastic hose removes and extrudees when relevant position the elastic hose, adjusting mechanism set up in the concentric circumference of rotor, adjusting mechanism has locking structure, the last measuring mechanism that is provided with of adjusting mechanism.
2. The peristaltic pump head according to claim 1, wherein the adjusting mechanism comprises a self-locking type telescopic structure and an adjusting member, one end of the self-locking type telescopic structure is connected with the rotating shaft through the rotor bracket, the other end of the self-locking type telescopic structure is connected with the adjusting member, the self-locking type telescopic structure can control the adjusting member to move towards the elastic hose and can enable the adjusting member to extrude the elastic hose when in a corresponding position.
3. The peristaltic pump head according to claim 2, wherein the self-locking telescopic structure is a self-locking telescopic rod, the adjusting member is an adjusting wheel, one end of the self-locking telescopic rod is connected with the rotating shaft through the rotor bracket, the other end of the self-locking telescopic rod is connected with the adjusting wheel, and the self-locking telescopic rod can control the adjusting wheel to move towards the elastic hose and enable the adjusting wheel to extrude the elastic hose when in a corresponding position.
4. The peristaltic pump head according to claim 2, wherein the self-locking telescopic structure is a self-locking telescopic rod, the adjusting member is an adjusting block, one end of the self-locking telescopic rod is connected with the rotating shaft through the rotor support, the other end of the self-locking telescopic rod is connected with the adjusting block, the self-locking telescopic rod can control the adjusting block to move towards the elastic hose and enable the adjusting block to extrude the elastic hose when in a corresponding position, extrusion surfaces of the adjusting block and the elastic hose are smooth arc surfaces, and the smooth arc surfaces are convex towards the direction of the elastic hose.
5. The peristaltic pump head according to claim 1, wherein the adjusting mechanism includes a slide rail, a first pressing rod, a second pressing rod, a first pressing block and a second pressing block, the slide rail is disposed on the rotor support, the first pressing rod and the second pressing rod are respectively disposed on two sides of the slide rail in parallel and slidably connected to the slide rail, the first pressing block and the second pressing block are respectively connected to the first pressing rod and the second pressing rod, the elastic hose passes through the space between the first pressing block and the second pressing block, the first pressing rod and the second pressing rod can move on the slide rail and control the first pressing block and the second pressing block to move towards the elastic hose and can enable the adjusting block to press the elastic hose at corresponding positions, and pressing surfaces of the first pressing block and the second pressing block and the elastic hose are smooth arc surfaces, the smooth arc surface protrudes towards the direction of the elastic hose, and the first pressure lever and the second pressure lever can be locked on the sliding rail through nuts.
6. The peristaltic pump head as claimed in claim 1, wherein the rotor support includes a first wheel disc, a second wheel disc and a rotation shaft sleeve, the first wheel disc and the second wheel disc are sleeved on the rotation shaft in parallel, the rotation shaft sleeve is sleeved on the rotation shaft between the first wheel disc and the second wheel disc and connected with the first wheel disc and the second wheel disc, pin holes are uniformly distributed on the same positions of the first wheel disc and the second wheel disc, the pin holes are located on the same circumferential surface, the rotor is rotatably connected with the first wheel disc and the second wheel disc through the pin holes, and the axis of the rotor is parallel to the axis of the rotation shaft.
7. The peristaltic pump head as claimed in claim 1, wherein the plurality of rotors and the plurality of adjusting mechanisms are provided, the rotors are uniformly distributed on the same circumferential surface, and the adjusting mechanisms are fixedly arranged at the same positions between two adjacent rotors.
8. The peristaltic pump head of claim 1, wherein the adjustment mechanism is provided with a measuring mechanism.
9. A peristaltic pump comprising a peristaltic pump head as claimed in any one of claims 1 to 8.
10. The method for regulating the flow rate of the pump head of the peristaltic pump according to claims 1 to 8, comprising the following steps:
step 1, preliminarily adjusting the flow of an elastic hose in a pump head of the peristaltic pump by adjusting the rotating speed of a rotating shaft;
and 2, adjusting the position of an adjusting piece in the pump head of the peristaltic pump through an adjusting mechanism to enable the adjusting piece to extrude the elastic hose, and finely adjusting the flow of the elastic hose in the pump head of the peristaltic pump.
CN202010368184.2A 2020-04-30 2020-04-30 Peristaltic pump head, peristaltic pump and flow adjusting method of peristaltic pump Pending CN111456930A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113062852A (en) * 2021-05-02 2021-07-02 石河子大学 Adjustable squeeze roller type hose pump
CN114776570A (en) * 2022-03-15 2022-07-22 深圳市好克医疗仪器股份有限公司 Infusion pump speed change adjusting method and device, electronic equipment and readable storage medium
CN116251264A (en) * 2023-02-08 2023-06-13 广州君霖医疗科技有限公司 Pressurized atomizing device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113062852A (en) * 2021-05-02 2021-07-02 石河子大学 Adjustable squeeze roller type hose pump
CN113062852B (en) * 2021-05-02 2024-03-29 石河子大学 Adjustable squeeze roller type hose pump
CN114776570A (en) * 2022-03-15 2022-07-22 深圳市好克医疗仪器股份有限公司 Infusion pump speed change adjusting method and device, electronic equipment and readable storage medium
CN114776570B (en) * 2022-03-15 2024-04-16 深圳市好克医疗仪器股份有限公司 Infusion pump speed change adjustment method and device, electronic equipment and readable storage medium
CN116251264A (en) * 2023-02-08 2023-06-13 广州君霖医疗科技有限公司 Pressurized atomizing device
CN116251264B (en) * 2023-02-08 2023-10-20 广州君霖医疗科技有限公司 Pressurized atomizing device

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