CN115076063B - Automatic injection pump for improving process reliability - Google Patents
Automatic injection pump for improving process reliability Download PDFInfo
- Publication number
- CN115076063B CN115076063B CN202210675772.XA CN202210675772A CN115076063B CN 115076063 B CN115076063 B CN 115076063B CN 202210675772 A CN202210675772 A CN 202210675772A CN 115076063 B CN115076063 B CN 115076063B
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- CN
- China
- Prior art keywords
- injector
- injection pump
- driving motor
- sliding block
- push rod
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- 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.)
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Classifications
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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
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
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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
- 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
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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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
Abstract
The invention provides an automatic injection pump for improving process reliability, which comprises an injection pump shell, a pipette gun head, a driving motor, a screw nut, a sleeve, a linear guide rail, a sliding block, a nut seat, a push rod, a photoelectric switch, a light blocking piece, an injector cylinder, an injector plunger and an injector sliding block, wherein an output shaft of the driving motor is connected with a first end of the screw through a coupler, a second end of the screw is rotationally connected with the nut seat, the second end of the screw nut is fixedly connected with the first end of the sliding block, the sliding block is in sliding connection with the linear guide rail, the second end of the sliding block is fixedly connected with the injector sliding block, and the push rod penetrates through the injector push rod seat and is arranged in the injector cylinder. According to the invention, the driving motor drives the screw rod, so that the injector piston is pushed to reciprocate, and the movement stroke of the injector piston is precisely controlled by adjusting the input pulse of the driving motor, so that the precision of the volume and the quality of injected liquid is ensured, and the consistency of the track of the screw rod during reciprocating movement is ensured by matching with the linear guide rail.
Description
Technical Field
The invention belongs to the technical field of process reliability engineering, and particularly relates to an automatic injection pump for improving process reliability.
Background
In the fields of aerospace, chemical industry, medical treatment and the like, the correct proportioning of raw material components is an important factor influencing the quality of products, and especially in the industrialized mass production, the reliability and stability of equipment for proportioning raw materials are important ways for realizing the stability and consistency of the quality of products. The reliability and stability of the equipment for proportioning the raw materials are realized by constructing the equipment with reasonable structure, function and layout.
The injection pump is a common raw material proportioning device, and the piston of the injector is pushed to perform liquid suction, injection and transfusion by controlling the power element, so that liquid transmission is realized. Currently, the existing syringe pumps have the following problems: 1) When the injection pump is used for large-batch operation, the consistency of the volume/mass of liquid injected each time is difficult to control accurately, namely the repeated precision of the injection pump is difficult to ensure, which inevitably affects the stability of the quality of the processed product. 2) When changing the injection liquid, the syringe needs to be cleaned. Incomplete cleaning of the syringe can introduce impurities into the product, resulting in defects in the quality of the processed product. Accordingly, there is a need to provide an automatic syringe pump for improving process reliability.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides an automatic injection pump for improving the process reliability, which drives a screw rod through a driving motor so as to push a syringe piston to reciprocate. By adjusting the input pulse of the driving motor, the movement stroke of the injector piston is precisely controlled, thereby ensuring the precision of the volume and the mass of the injected liquid, and ensuring the consistency of the track during the reciprocating movement of the screw rod by matching with the linear guide rail.
The invention provides an automatic injection pump for improving process reliability, which comprises an injection pump shell, a liquid-transferring gun head, a driving motor, a screw nut, a sleeve, an injection pump base, a linear guide rail, a slide block, a motor support, a motor base, a nut base, a push rod, a photoelectric switch, a light blocking sheet, a pump adapter, an injector cylinder, a liquid-transferring gun head, an injector plunger, an injector slide block, an injector fixing seat, an injector pressing plate, an injector push rod base, an injector sealing joint, a spring pressing block and a sampling needle,
the driving motor is fixedly arranged on the motor support, the motor base is positioned below the motor support and is fixedly connected with the motor support through the injection pump housing, the first end of the nut seat is fixedly connected with the first end face of the pump adapter seat, the second end face of the pump adapter seat is fixedly connected with the injection pump housing, the second end of the nut seat is fixedly connected with the upper part of the sleeve, the output shaft of the driving motor is connected with the first end of the screw rod through a coupler, and the second end of the screw rod is rotationally connected with the nut seat;
the screw nut is sleeved on the screw, the first end of the screw nut is provided with a light blocking piece, the second end of the screw nut is fixedly connected with the first end of the sliding block, the sliding block is in sliding connection with the linear guide rail, the linear guide rail is fixedly installed on the injection pump base, the second end of the sliding block is fixedly connected with the injector sliding block, the bottom of the injector sliding block is connected with the first end of the push rod through a spring pressing block, the push rod penetrates through the injector push rod seat and is arranged in the injector cylinder, the tail end of the injector cylinder is provided with an injector sealing joint, the pipette gun head is arranged between the injector cylinder and the sleeve, the second end of the push rod is connected with the injector plunger, the upper part of the injector cylinder is fixedly connected with the injector fixing seat through an injector pressing plate, and the tail end of the injector is provided with a sampling needle.
Preferably, the upper part of the injection pump housing is fixedly provided with a photoelectric switch which is matched with the light blocking sheet for use, and when the light blocking sheet moves to the photoelectric switch, the photoelectric switch controls the driving motor to stop moving, so that the syringe plunger is prevented from falling off due to exceeding limit.
Preferably, the injection pump base is provided with a limit groove for limiting the vertical up-and-down movement stroke of the push rod.
Preferably, the driving motor converts the rotation motion of the output shaft of the driving motor into the linear motion through the cooperation of the screw and the screw nut.
Preferably, the automatic injection pump adjusts the movement stroke of the syringe plunger by setting the number of pulses of the drive motor, thereby controlling the volume/mass of liquid drawn into the syringe.
Compared with the prior art, the invention has the following advantages:
1. according to the invention, the driving motor drives the screw rod, so that the injector piston is pushed to reciprocate. The motion stroke of the injector piston can be precisely controlled by adjusting the input pulse of the driving motor, so that the precision of the volume and the quality of the injected liquid is ensured; and the linear guide rail is matched, so that the track consistency during the reciprocating motion of the screw rod is ensured. In summary, repeatable accuracy of the automatic injection pump may be effectively ensured.
2. The invention adopts the disposable injector, the injector does not need to be cleaned when different liquids are injected, the cleaning steps are reduced, and the problem that the impurities are introduced into the product due to incomplete cleaning of the injector is effectively avoided; meanwhile, the sampling needle is removed by the motor of the injection pump, so that the pollution to the injector when the sampling needle is manually removed is avoided, and the quality level of the product is effectively controlled.
Drawings
FIG. 1 is a schematic view of the overall structure of an automatic injection pump of the present invention;
FIG. 2 is a schematic view of an automatic injection pump according to the present invention;
FIG. 3 is a schematic side view of an automatic injection pump of the present invention;
fig. 4 is a schematic top view of an automatic injection pump of the present invention.
The main reference numerals:
the syringe pump housing 1, the pipette tip 2, the driving motor 3, the screw nut 4, the sleeve 5, the syringe pump base 6, the linear guide rail 7, the sliding block 8, the motor support 9, the driving motor base 10, the nut base 11, the push rod 12, the photoelectric switch 13, the light blocking piece 14, the pump adapter 15, the syringe barrel 16, the syringe pipette tip 17, the syringe plunger 18, the syringe sliding block 19, the syringe fixing base 20, the syringe pressing plate 21, the syringe push rod base 22, the syringe sealing joint 23, the spring pressing block 24 and the sampling needle 25.
Detailed Description
In order to make the technical content, the structural features, the achieved objects and the effects of the present invention more detailed, the following description will be taken in conjunction with the accompanying drawings.
The invention provides an automatic injection pump for improving process reliability, as shown in fig. 1 to 4, the automatic injection pump comprises an injection pump housing 1, a liquid-transferring device gun head 2, a driving motor 3, a screw nut 4, a sleeve 5, an injection pump base 6, a linear guide rail 7, a sliding block 8, a motor support 9, a motor base 10, a nut base 11, a push rod 12, a photoelectric switch 13, a light blocking piece 14, a pump transfer base 15, a syringe barrel 16, a liquid-transferring device gun head 17, a syringe plunger 18, a syringe sliding block 19, a syringe fixing seat 20, a syringe pressing plate 21, a syringe push rod base 22, a syringe sealing joint 23, a spring pressing block 24 and a sampling needle 25, wherein the driving motor 3 is fixedly arranged on the motor support 9, the motor base 10 is positioned below the motor support 9, the motor base 10 is fixedly connected with the motor support 9 through the injection pump housing 1, a first end of the nut base 11 is fixedly connected with a first end face of the pump transfer base 15, a second end face of the pump transfer base 15 is fixedly connected with the injection pump housing 1, a second end of the nut base 11 is fixedly connected with the upper part of the sleeve 5, an output shaft of the driving motor 3 is fixedly connected with the second end of the photoelectric switch 13 through the motor sealing joint 23 and the photoelectric switch 13, and the photoelectric switch 13 is prevented from falling off when the photoelectric switch 13 is matched with the screw 13 is driven by the drive motor 3, and the photoelectric switch is fixedly arranged at the position of the plunger 13. The screw nut 4 is sleeved on the screw, the first end of the screw nut 4 is provided with the light blocking piece 14, the second end of the screw nut 4 is fixedly connected with the first end of the sliding block 8, the sliding block 8 is in sliding connection with the linear guide rail 7, the linear guide rail 7 is fixedly arranged on the injection pump base 6, a limiting groove is formed in the injection pump base 6 and used for limiting the vertical up-and-down moving stroke of the push rod 12, the second end of the sliding block 8 is fixedly connected with the injector sliding block 19, the bottom of the injector sliding block 19 is connected with the first end of the push rod 12 through the spring pressing block 24, the push rod 12 penetrates through the injector push rod seat 22 and is arranged in the injector cylinder 16, the end of the injector cylinder 16 is provided with the injector sealing joint 23, the pipette gun head 2 is arranged between the injector cylinder 16 and the sleeve 5, the second end of the push rod 12 is connected with the injector plunger 18, the upper part of the injector cylinder 16 is fixedly connected with the injector fixing seat 20 through the injector pressing plate 21, and the sampling needle 25 is arranged at the tail end of the injector 16.
Specifically, the drive motor 3 converts the rotational motion of the output shaft of the drive motor 3 into a linear motion by the engagement of the lead screw with the lead screw nut 4. The automatic injection pump adjusts the movement stroke of the syringe plunger 18 by setting the number of pulses of the drive motor 3, thereby controlling the volume/mass of liquid drawn into the syringe.
An automatic syringe pump for improving process reliability of the present invention is further described in connection with the following examples:
examples:
as shown in fig. 1 to 4, the driving motor 3 is mounted on a motor support 9 and a driving motor base 10, an output end of the driving motor 3 is connected to a screw nut 4, and the screw nut 4 converts a rotational motion of the output end of the driving motor 3 into a linear motion. The screw nut 4 is provided with the light blocking piece 14, the light blocking piece 14 is matched with the photoelectric switch 13 arranged at the zero position of the injector, when the light blocking piece 14 moves to the photoelectric switch 13, the position of the plunger 18 of the injector is indicated to be at the zero position, and at the moment, the photoelectric switch 13 controls the driving motor 3 to stop moving.
The screw nut 4 is connected with the injector slide block 19, and drives the injector slide block 19 arranged on the linear guide rail 7 and the slide block 8 to perform linear motion. The syringe slide 19 is connected to the ram 12 by a spring press 24, and the ram 12 drives the syringe plunger 18 to reciprocate within the syringe barrel 16. The syringe barrel 16 is fixed to the syringe holder 20 by a syringe pressing plate 21. A sampling needle 25 is mounted at the end of the syringe barrel 16 for taking liquid samples and pipetting.
First, when the injection pump is used for injecting liquid, an operator sends out a control pulse through the controller to enable the driving motor 3 to rotate, the driving motor 3 drives the screw nut 4 to change the rotation motion into linear motion, the syringe plunger 18 is pushed to perform injection and transfusion, and liquid in the syringe is transported to a designated position. By setting the number of control pulses, the travel of the syringe plunger 18 can be adjusted to control the volume/mass of the injected fluid.
Then, when the syringe pump is used for taking liquid, an operator sends out a control pulse through the controller to enable the driving motor 3 to reversely rotate, and the driving motor 3 drives the screw nut 4 to change the rotary motion into linear motion to drive the syringe plunger 18 to take liquid. By setting the number of control pulses, the travel of the syringe plunger 18 can be adjusted to control the volume/mass of fluid drawn into the syringe. When the light blocking piece 14 moves to the photoelectric switch 13, the photoelectric switch 13 controls the driving motor 3 to stop moving, so that the falling off caused by the fact that the plunger 18 of the injector exceeds the limit is avoided.
Finally, when the syringe pump sampling needle is removed, an operator sends out a control pulse through the controller to enable the driving motor 3 to rotate, the driving motor 3 drives the lead screw nut 4, and the syringe plunger 18 is driven to move to contact the sampling needle 25 and is removed.
The invention drives the screw rod through the driving motor 3, so as to push the injector piston 18 to reciprocate. By adjusting the input pulse of the driving motor 3, the movement stroke of the injector piston 18 is precisely controlled, thereby ensuring the precision of the volume and the quality of the injected liquid, and ensuring the consistency of the track during the reciprocating movement of the screw rod by matching with the linear guide rail. In summary, repeatable accuracy of the automatic syringe pump is effectively ensured.
The above examples are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solution of the present invention should fall within the scope of protection defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (5)
1. An automatic injection pump for improving process reliability is characterized by comprising an injection pump shell, a pipette gun head, a driving motor, a screw nut, a sleeve, an injection pump base, a linear guide rail, a slide block, a motor support, a motor base, a nut base, a push rod, a photoelectric switch, a light blocking sheet, a pump adapter, an injector cylinder, a pipette gun head, an injector plunger, an injector slide block, an injector fixing seat, an injector pressing plate, an injector push rod base, an injector sealing joint, a spring pressing block and a sampling needle,
the driving motor is fixedly arranged on the motor support, the motor base is positioned below the motor support and is fixedly connected with the motor support through the injection pump housing, the first end of the nut seat is fixedly connected with the first end face of the pump adapter seat, the second end face of the pump adapter seat is fixedly connected with the injection pump housing, the second end of the nut seat is fixedly connected with the upper part of the sleeve, the output shaft of the driving motor is connected with the first end of the screw rod through a coupler, and the second end of the screw rod is rotationally connected with the nut seat;
the screw nut is sleeved on the screw, the first end of the screw nut is provided with a light blocking piece, the second end of the screw nut is fixedly connected with the first end of the sliding block, the sliding block is in sliding connection with the linear guide rail, the linear guide rail is fixedly arranged on the injection pump base, the second end of the sliding block is fixedly connected with the sliding block of the injector, the bottom of the sliding block of the injector is connected with the first end of the push rod through the spring pressing block, the push rod penetrates through the push rod seat of the injector and is arranged in the injector cylinder, the tail end of the injector cylinder is provided with an injector sealing joint, the gun head of the liquid transfer device is arranged between the injector cylinder and the sleeve, the second end of the push rod is connected with the plunger of the injector, the upper part of the injector cylinder is fixedly connected with the fixed seat of the injector through the injector pressing plate, and the tail end of the injector is provided with a sampling needle.
2. The automatic injection pump for improving process reliability according to claim 1, wherein a photoelectric switch is fixedly arranged at the upper part of the injection pump housing and is matched with the light blocking sheet, and when the light blocking sheet moves to the photoelectric switch, the photoelectric switch controls the driving motor to stop moving, so that falling off caused by exceeding limit of the plunger of the injector is avoided.
3. The automatic syringe pump for improving process reliability according to claim 1, wherein the syringe pump base is provided with a limit groove for limiting the vertical up-and-down movement stroke of the push rod.
4. The automatic injection pump for improving process reliability according to claim 1, wherein the driving motor converts a rotational motion of an output shaft of the driving motor into a linear motion by cooperation of a lead screw with the lead screw nut.
5. The automatic injection pump for improving process reliability according to claim 1, wherein the automatic injection pump adjusts a movement stroke of the syringe plunger by setting the number of pulses of the driving motor, thereby controlling a volume/mass of liquid sucked into the syringe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210675772.XA CN115076063B (en) | 2022-06-15 | 2022-06-15 | Automatic injection pump for improving process reliability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210675772.XA CN115076063B (en) | 2022-06-15 | 2022-06-15 | Automatic injection pump for improving process reliability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115076063A CN115076063A (en) | 2022-09-20 |
| CN115076063B true CN115076063B (en) | 2023-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210675772.XA Active CN115076063B (en) | 2022-06-15 | 2022-06-15 | Automatic injection pump for improving process reliability |
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| Country | Link |
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| CN (1) | CN115076063B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH062650A (en) * | 1992-06-16 | 1994-01-11 | F D K Eng:Kk | Measuring pumping device |
| CN103105316A (en) * | 2012-11-06 | 2013-05-15 | 苏州聚阳环保科技有限公司 | Injection pump |
| CN203299213U (en) * | 2013-06-17 | 2013-11-20 | 孙卫国 | Precise injection pump |
| KR20170006174A (en) * | 2015-07-07 | 2017-01-17 | 주식회사 그란테크 | Ultra-precision syringe pumps |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7284453B2 (en) * | 2005-07-15 | 2007-10-23 | Beckman Coulter, Inc. | Method and apparatus for maximizing liquid aspiration from small vessels |
-
2022
- 2022-06-15 CN CN202210675772.XA patent/CN115076063B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH062650A (en) * | 1992-06-16 | 1994-01-11 | F D K Eng:Kk | Measuring pumping device |
| CN103105316A (en) * | 2012-11-06 | 2013-05-15 | 苏州聚阳环保科技有限公司 | Injection pump |
| CN203299213U (en) * | 2013-06-17 | 2013-11-20 | 孙卫国 | Precise injection pump |
| KR20170006174A (en) * | 2015-07-07 | 2017-01-17 | 주식회사 그란테크 | Ultra-precision syringe pumps |
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| Publication number | Publication date |
|---|---|
| CN115076063A (en) | 2022-09-20 |
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