CN114017297A - A peristaltic pump automatic pinch mechanism - Google Patents
A peristaltic pump automatic pinch mechanism Download PDFInfo
- Publication number
- CN114017297A CN114017297A CN202111434955.4A CN202111434955A CN114017297A CN 114017297 A CN114017297 A CN 114017297A CN 202111434955 A CN202111434955 A CN 202111434955A CN 114017297 A CN114017297 A CN 114017297A
- Authority
- CN
- China
- Prior art keywords
- slit
- lead screw
- fixed
- pipe clamping
- peristaltic pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- F04B43/1223—Machines, pumps, or pumping installations having flexible working members having peristaltic action the actuating elements, e.g. rollers, moving in a straight line during squeezing
-
- 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
- F04B49/02—Stopping, starting, unloading or idling control
-
- 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
- F04B49/06—Control using electricity
- F04B49/065—Control using electricity and making use of computers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Reciprocating Pumps (AREA)
Abstract
An automatic tube clamping mechanism of a peristaltic pump comprises a driving motor and a tube clamping mechanical arm, wherein the driving motor is fixed on a pump seat through an elastic mounting plate, and a lead screw is coaxially fixed on a main shaft of the driving motor; the pipe clamping mechanical arm is slidably mounted on the pump base, a screw nut is fixed at the rear end of the pipe clamping mechanical arm and is in threaded connection with a screw rod, the screw rod is driven to rotate through a driving motor, and then the pipe clamping mechanical arm is driven to linearly move on the pump base through the screw nut. The present invention overcomes the deficiencies of the prior art.
Description
Technical Field
The invention relates to the technical field of peristaltic pumps, in particular to an automatic tube clamping mechanism of a peristaltic pump.
Background
The existing peristaltic pump is divided into a manual tube clamping mode and a mechanical arm automatic tube clamping mode in the mode of fixing a peristaltic tube. The mode of the manipulator automatically clamping the tube is that a motor is controlled by a program to drive a screw nut to drive the manipulator to stretch and retract, so that the clamping of the creeping tube is realized. The essence of the peristaltic pump is that a tube clamping mechanical arm is moved to a tube clamping position, and the tube clamping mechanical arm is matched with a pump head roller to generate pressure for extruding a peristaltic tube, so that the peristaltic tube is clamped. Once the distance between the tube clamping position of the tube clamping manipulator and the roller of the pump head is set, when peristaltic tubes of different specifications are clamped, the pump head of the peristaltic pump needs to be replaced or the tube clamping position of the tube clamping manipulator is newly arranged, if the tube clamping position of the manipulator needs to be adjusted, whether the mounted peristaltic tubes are sealed or not needs to be detected, and the tube clamping position of the manipulator needs to be adjusted, moreover, the distance between the tube clamping manipulator and the roller of the pump head cannot be too small, the stress of the peristaltic tubes can be increased due to too small distance, the peristaltic tubes are prone to being broken, the service life of the peristaltic tubes is shortened, some peristaltic tubes which are too large cannot be sealed, the installation and adjustment process is complex and troublesome, the working efficiency is low, the universality is low, the cost is high, and automatic tube clamping cannot be completely realized; secondly, peristaltic tubes of different manufacturers with the same specification have different wall thicknesses and elasticity, and the set tube clamping position cannot adapt to the peristaltic tubes of different manufacturers, so that some peristaltic tubes cannot be sealed, and the peristaltic pump cannot work normally or the flow precision is reduced.
Disclosure of Invention
The invention provides an automatic pipe clamping mechanism of a peristaltic pump, which overcomes the defects of the prior art.
The technical scheme adopted by the invention is as follows: an automatic tube clamping mechanism of a peristaltic pump comprises a driving motor and a tube clamping mechanical arm, wherein the driving motor is fixed on a pump seat through an elastic mounting plate, and a lead screw is coaxially fixed on a main shaft of the driving motor; the pipe clamping mechanical arm is slidably mounted on the pump base, a screw nut is fixed at the rear end of the pipe clamping mechanical arm and is in threaded connection with a screw rod, the screw rod is driven to rotate through a driving motor, and then the pipe clamping mechanical arm is driven to linearly move on the pump base through the screw nut.
The driving motor is fixed on the pump base, and a lead screw is coaxially fixed on a main shaft of the driving motor; the pipe clamping mechanical arm is slidably mounted on the pump base, a screw nut is fixed at the rear end of the pipe clamping mechanical arm through an elastic mounting plate and is in threaded connection with a screw rod, the screw rod is driven to rotate through a driving motor, and then the pipe clamping mechanical arm is driven to linearly move on the pump base through the screw nut.
And a deformation sensor is fixed on the elastic mounting plate and is electrically connected with a control system of the peristaltic pump.
The elastic mounting plate is formed by overlapping elastic steel sheets.
A first slit, a second slit, a third slit and a fourth slit are symmetrically formed in the vertical direction on two sides of the elastic steel sheet, openings of the first slit and the third slit face upwards, and openings of the second slit and the fourth slit face downwards; a through hole is formed in the center of the elastic steel sheet, first mounting holes are symmetrically formed in the periphery of the through hole, and the through hole and the first mounting holes are located between the second slit and the third slit; the deformation sensors are a pair of resistance strain gauges, and the resistance strain gauges are symmetrically fixed between the first slit and the second slit and between the third slit and the fourth slit; second mounting holes are symmetrically formed in two sides of the elastic steel sheet and are positioned on the outer sides of the first thin slits; the elastic steel sheet is fixedly connected with the driving motor or the screw nut through the first mounting hole and fixedly connected with the pump base or the rear end of the pipe clamping manipulator through the second mounting hole.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the deformation of the elastic steel sheet is detected by arranging the deformation sensor, the detection signal is transmitted to the peristaltic pump control system, the stroke of the pipe clamping manipulator is controlled by the peristaltic pump control system, the pipe clamping position of the manipulator does not need to be adjusted, and the peristaltic pump head does not need to be replaced, so that effective clamping of different elastic peristaltic pipes with different specifications and different wall thicknesses can be realized, the adaptability of the peristaltic pump is improved, and the full automation of pipe clamping by the manipulator is realized.
2. The invention realizes stepless adjustment of the stroke of the pipe clamping manipulator through elastic deformation, further realizes stepless adjustment of clamping force in the pipe clamping process, can effectively clamp peristaltic pipes with different wall thicknesses and elasticity of different manufacturers, has strong universality, can ensure reliable, stable and normal operation of the peristaltic pump, has accurate flow precision, and effectively reduces the pipe breakage rate of the peristaltic pipes.
3. In the invention, the elastic deformation amount is larger when the elasticity of the peristaltic tube is larger in the tube clamping process, so that the obtained elastic deformation amount detection data can be used as the elasticity evaluation data of the peristaltic tube.
4. The invention can adjust the size of the elastic deformation amount by increasing or reducing the number of the elastic steel sheets, thereby achieving the purpose of adjusting the size of the clamping force of the manipulator and having wide application range.
5. According to the invention, the peristaltic pump control system is used for detecting data by using elastic deformation, a limit switch is not needed to be arranged, the opening, closing and resetting of the manipulator can be automatically completed, the elastic deformation can be monitored by the peristaltic pump control system, and when the data are detected to be abnormal, the tube clamping manipulator driving motor is suddenly stopped, so that the function of preventing hands from being clamped in the closing process of the manipulator is realized, and the personal injury is effectively avoided.
Drawings
FIG. 1 is a schematic structural diagram of a first embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a second embodiment of the present invention;
FIG. 3 is a state diagram of the use of the first embodiment of the present invention;
FIG. 4 is a state diagram of the use of the second embodiment of the present invention;
FIG. 5 is a schematic view showing the structure of the elastic steel sheet according to the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Example 1: referring to the attached figures 1, 3 and 5, the automatic tube clamping mechanism of the peristaltic pump comprises a driving motor 1 and a tube clamping manipulator 2, wherein the driving motor 1 is fixed on a pump base 6 through an elastic mounting plate 3, and a lead screw 4 is coaxially fixed on a main shaft of the driving motor 1; the pipe clamping mechanical arm 2 is slidably mounted on the pump base 6, a lead screw nut 5 is fixed to the rear end of the pipe clamping mechanical arm 2, the lead screw nut 5 is in threaded connection with a lead screw 4, the lead screw 4 is driven to rotate through a driving motor 1, and then the pipe clamping mechanical arm 2 is driven to linearly move on the pump base 6 through the lead screw nut 5.
The elastic mounting plate 3 is formed by superposing elastic steel sheets 8, a deformation sensor 7 is fixed on the elastic steel sheet 8 on the outermost side, and the deformation sensor 7 is electrically connected with a control system of the peristaltic pump.
Two sides of the elastic steel sheet 8 are symmetrically provided with a first slit 8-1, a second slit 8-2, a third slit 8-3 and a fourth slit 8-4 in the vertical direction, the openings of the first slit 8-1 and the third slit 8-3 are upward, and the openings of the second slit 8-2 and the fourth slit 8-4 are downward; a through hole 8-5 is formed in the center of the elastic steel sheet 8, a first mounting hole 8-6 is symmetrically formed in the periphery of the through hole 8-5, and the through hole 8-5 and the first mounting hole 8-6 are located between the second slit 8-2 and the third slit 8-3; the deformation sensor 7 is a pair of resistance strain gauges which are symmetrically fixed between the first slit 8-1 and the second slit 8-2 and between the third slit 8-3 and the fourth slit 8-4; second mounting holes 8-7 are symmetrically formed in two sides of the elastic steel sheet 8, and the second mounting holes 8-7 are located on the outer side of the first thin slit 8-1; the elastic steel sheet 8 is fixedly connected with the driving motor 1 through a first mounting hole 8-6 and fixedly connected with the pump base 6 through a second mounting hole 8-7.
Example 2: refer to fig. 2, 4, 5. A peristaltic pump tube clamping mechanism comprises a driving motor 1 and a tube clamping manipulator 2, wherein the driving motor 1 is fixed on a pump base 6, and a lead screw 4 is coaxially fixed on a main shaft of the driving motor 1; the pipe clamping mechanical arm 2 is slidably mounted on the pump base 6, a screw nut 5 is fixed at the rear end of the pipe clamping mechanical arm 2 through an elastic mounting plate 3, the screw nut 5 is in threaded connection with a screw rod 4, the screw rod 4 is driven to rotate through a driving motor 1, and then the pipe clamping mechanical arm 2 is driven to linearly move on the pump base 6 through the screw nut 5.
The elastic mounting plate 3 is formed by superposing elastic steel sheets 8, a deformation sensor 7 is fixed on the elastic steel sheet 8 on the outermost side, and the deformation sensor 7 is electrically connected with a control system of the peristaltic pump. The number of the elastic steel sheets 8 is determined according to the design range of the clamping force of the pipe clamping manipulator 2, and the more the number of the elastic steel sheets 8 is stacked, the larger the clamping force of the pipe clamping manipulator 2 is.
Two sides of the elastic steel sheet 8 are symmetrically provided with a first slit 8-1, a second slit 8-2, a third slit 8-3 and a fourth slit 8-4 in the vertical direction, the openings of the first slit 8-1 and the third slit 8-3 are upward, and the openings of the second slit 8-2 and the fourth slit 8-4 are downward; a through hole 8-5 is formed in the center of the elastic steel sheet 8, a first mounting hole 8-6 is symmetrically formed in the periphery of the through hole 8-5, and the through hole 8-5 and the first mounting hole 8-6 are located between the second slit 8-2 and the third slit 8-3; the deformation sensor 7 is a pair of resistance strain gauges which are symmetrically fixed between the first slit 8-1 and the second slit 8-2 and between the third slit 8-3 and the fourth slit 8-4; second mounting holes 8-7 are symmetrically formed in two sides of the elastic steel sheet 8, and the second mounting holes 8-7 are located on the outer side of the first thin slit 8-1; the elastic steel sheet 8 is fixedly connected with the screw rod nut 5 through a first mounting hole 8-6 and fixedly connected with the rear end of the pipe clamping manipulator 2 through a second mounting hole 8-7.
The working principle of the invention is as follows: the control system of the peristaltic pump controls the driving motor 1 to drive the screw rod 4 to rotate, then the screw nut 5 drives the tube clamping mechanical arm 2 to linearly move to the mounting position of the peristaltic tube 9 along the pump seat 6 leftwards and stop, then the peristaltic tube 9 is mounted in the peristaltic tube mounting groove 2-1 at the front end of the tube clamping mechanical arm 2, the control system of the peristaltic pump controls the driving motor 1 to reversely rotate to drive the screw rod 4 to reversely rotate, then the screw nut 5 drives the tube clamping mechanical arm 2 to linearly move rightwards along the pump seat 6 until the peristaltic tube 9 contacts with the roller component 10 of the peristaltic pump when encountering the elastic resistance of the peristaltic tube, the elastic mounting plate 3 starts to deform, the resistance strain gauge 7 fixed on the elastic mounting plate 3 deforms along with the elastic mounting plate, an electric signal generated by the deformation of the resistance strain gauge 7 is transmitted to the control system of the peristaltic pump, and the driving motor 1 continuously rotates, the deformation of the elastic mounting plate 3 is increased continuously, the electric signal generated by the deformation of the resistance strain gauge 7 is increased continuously, and when the control system of the peristaltic pump detects that the electric signal generated by the deformation of the resistance strain gauge 7 reaches the rated value for clamping the peristaltic tube, the driving motor 1 is controlled to stop rotating, so that the peristaltic tube is clamped automatically.
The invention realizes the stepless regulation of the stroke of the pipe clamping manipulator 2 through elastic deformation, further realizes the stepless regulation of the clamping force in the pipe clamping process, can realize effective clamping for peristaltic pipes with different wall thicknesses and elasticity of different manufacturers, can realize effective clamping for peristaltic pipes with different specifications without replacing a peristaltic pump head or newly arranging a pipe clamping position of the pipe clamping manipulator, has strong adaptability, ensures the reliable and stable work of the peristaltic pump, and realizes the full automation of the pipe clamping of the manipulator.
The invention can also utilize elastic deformation to detect data through the peristaltic pump control system, can automatically complete the opening, closing and resetting of the manipulator without arranging a limit switch, can also monitor the elastic deformation through the peristaltic pump control system, and can suddenly stop the driving motor of the pipe clamping manipulator when the data is detected to be abnormal, thereby realizing the function of preventing the manipulator from clamping hands in the closing process.
The above-mentioned embodiments are merely preferred embodiments of the present invention, which should not be construed as limiting the scope of the invention, and therefore all equivalent variations made by the following claims should be included in the scope of the invention.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111434955.4A CN114017297B (en) | 2021-11-29 | 2021-11-29 | A peristaltic pump automatic tube clamping mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111434955.4A CN114017297B (en) | 2021-11-29 | 2021-11-29 | A peristaltic pump automatic tube clamping mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114017297A true CN114017297A (en) | 2022-02-08 |
| CN114017297B CN114017297B (en) | 2025-07-01 |
Family
ID=80066994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111434955.4A Active CN114017297B (en) | 2021-11-29 | 2021-11-29 | A peristaltic pump automatic tube clamping mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114017297B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120100023A1 (en) * | 2010-10-22 | 2012-04-26 | Nidec Servo Corporation | Tube pump |
| US20130195630A1 (en) * | 2012-01-30 | 2013-08-01 | Seiko Epson Corporation | Pump apparatus |
| CN209621566U (en) * | 2019-03-19 | 2019-11-12 | 天津金菩提科技有限公司 | A kind of peristaltic-type pump arrangement of telescopic Automatic-clamping release delivery hose |
| CN216714666U (en) * | 2021-11-29 | 2022-06-10 | 罗淑文 | Automatic pipe clamping mechanism of peristaltic pump |
-
2021
- 2021-11-29 CN CN202111434955.4A patent/CN114017297B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120100023A1 (en) * | 2010-10-22 | 2012-04-26 | Nidec Servo Corporation | Tube pump |
| US20130195630A1 (en) * | 2012-01-30 | 2013-08-01 | Seiko Epson Corporation | Pump apparatus |
| CN209621566U (en) * | 2019-03-19 | 2019-11-12 | 天津金菩提科技有限公司 | A kind of peristaltic-type pump arrangement of telescopic Automatic-clamping release delivery hose |
| CN216714666U (en) * | 2021-11-29 | 2022-06-10 | 罗淑文 | Automatic pipe clamping mechanism of peristaltic pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114017297B (en) | 2025-07-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204346688U (en) | Welded nut pick-up unit | |
| CN216714666U (en) | Automatic pipe clamping mechanism of peristaltic pump | |
| CN112366888A (en) | Brushless motor driven lift stand and lift table | |
| CN205326303U (en) | 3D printer send a double detection device | |
| CN114017297B (en) | A peristaltic pump automatic tube clamping mechanism | |
| CN114993863A (en) | Metal fatigue resistance performance detection device | |
| CN211145772U (en) | Pipeline walking robot and pipeline inspection system | |
| CN207915052U (en) | A kind of clamp dedicated for machining | |
| CN219802143U (en) | Linear displacement device with adjustable start-stop position | |
| CN114572919A (en) | Screwing mechanism and control method thereof | |
| CN205723194U (en) | Pressure monitoring and control device in high-voltage switch hydraulic operating mechanism | |
| CN111331265B (en) | A multi-diameter adaptive positioning bushing | |
| CN214686528U (en) | An automatic adjustment suction cup group mechanism | |
| CN213846444U (en) | Brushless motor driven straight cylinder stand and lift table | |
| CN222231933U (en) | Explosion-proof differential pressure transmitter | |
| CN219757386U (en) | Automatic change portable electric actuator timing device of instrument | |
| CN114877704A (en) | Device, system and method for controlling baking deformation of thin-wall bending vacuum chamber | |
| CN221173286U (en) | Wire outer diameter detection equipment | |
| CN222791784U (en) | An intelligent induction clamping device | |
| CN110328976A (en) | Driving device of printer head | |
| CN216246089U (en) | Spare part detection device for electromechanical manufacturing | |
| CN210759436U (en) | Hydraulic press slider stroke detection device | |
| CN222144525U (en) | A device for measuring elasticity of high-sealed water pump bearings | |
| CN222866122U (en) | Sensor stability test equipment | |
| CN220129518U (en) | Flaring forming die for winding corrugated pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |