CN202451405U - Peristaltic pump with anti-inversion function - Google Patents
Peristaltic pump with anti-inversion function Download PDFInfo
- Publication number
- CN202451405U CN202451405U CN2012200164296U CN201220016429U CN202451405U CN 202451405 U CN202451405 U CN 202451405U CN 2012200164296 U CN2012200164296 U CN 2012200164296U CN 201220016429 U CN201220016429 U CN 201220016429U CN 202451405 U CN202451405 U CN 202451405U
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- peristaltic pump
- transmission shaft
- magnet
- utility
- model
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- 230000002572 peristaltic effect Effects 0.000 title claims abstract description 62
- 230000005540 biological transmission Effects 0.000 claims abstract description 24
- 238000001802 infusion Methods 0.000 abstract description 16
- 238000010276 construction Methods 0.000 abstract 1
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 13
- 238000012545 processing Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
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Abstract
The utility model discloses a peristaltic pump with an anti-inversion function, which comprises a transmission shaft and a plurality of peristaltic sliding blocks, wherein the peristaltic sliding blocks are axially connected to the transmission shaft in series and are used for extruding an infusion tube, and at least three magnets are unevenly fixed on the same circumstance at a certain angle on an end surface of the transmission shaft, which is near a sensing element. The peristaltic pump has the advantages of simple structure and low construction cost and has the anti-inversion function.
Description
Technical field
The utility model relates to the assembly of infusion pump, specifically is meant a kind of peristaltic pump that prevents reverse function that has.
Background technique
Infusion pump is a kind of safety can be provided, reliably and accurately control the medical apparatus of venous transfusion.Infusion pump generally comprises the pump housing, peristaltic pump, motor and control mechanism; Peristaltic pump is installed in the pump housing of infusion pump; Peristaltic pump has transmission shaft and is contained in a plurality of wriggling slide blocks on the transmission shaft with axially going here and there, and the wriggling slide block is used to push the indusion tube that interts in the infusion pump pump housing, and the transmission shaft of peristaltic pump links to each other with the output shaft of motor; Rotated synchronously by the motor driving transmission shaft, control mechanism can be controlled motor action.
As the core component in the infusion pump, peristaltic pump is a kind of liquid transporting apparatus of may command flow velocity.Make through the repeated compression spring tube commonly that content moves along certain orientation in the pipe, its flow velocity is determined with compression speed by the diameter of pipe.If the order of compression changes, then the flow direction of tube fluid just changes.
The working principle of peristaltic pump is similar to flexible pipe that is full of fluid of finger pinching, along with moving of finger, forms negative pressure in the pipe, and liquid flows thereupon, and the sliding tube inner fluid moves forward along with pointing forward.Be divided into the roller peristaltic pump and refer to formula blade peristaltic pump according to the different of working position shape and drive manner.
The roller peristaltic pump is exactly to replace finger with roller, according to fixing turning to, continues the flexible pipe of full of liquid is pushed, and makes liquid in pipe move forward along the flow direction of expectation; Finger formula blade peristaltic pump is the slide block with a series of blade types, arranges according to a definite sequence, and replaces finger tube wall to be pushed according to preset order in the flexible pipe outside of full of liquid, makes liquid in pipe move forward along the flow direction of expectation.For referring to formula blade peristaltic pump; What the extruding that slide block produces was moved is to be caused by the cam rotation with the slide block equal number; The corresponding cam of each piece slide block; All cams all are installed on same the live axle, and the mobile order of slide block is determined with the cam structure size by putting in order of these cams.
On market the most common to some technology that prevent to reverse in; The direction that the device detection motor of processing through optics and photovoltaic principals rotates reaches the technology of judging the peristaltic pump sense of rotation, and it is made up of light source, code-disc (also being raster grid), optical system and four parts of circuit.The method that is adopted is roughly on the output shaft of motor, and an opaque code-disc of rotation synchronously is installed, the periphery of code-disc, and the unequal grid of the size that distributing in the both sides of these grids, is installed optical emission element and optical receiver component respectively.So, in the rotation process of code-disc along with motor, the grid that the signal of the optical element on both sides constantly is rotated intercepts, and original so lasting signal has just produced with grid and rotated another intermittent signal of getting in touch surely.The rotation of positive and negative both direction, code-disc can produce the two pulse signals of phase phase difference 90 degree, and through comparison and analysis to these signals, the judgement to code-disc rotating speed and sense of rotation is made by system, and then judge the sense of rotation of motor.The device that this optics and photovoltaic principals are processed detects the method for motor sense of rotation and has used wide sending out, but it needs the special device that transmits and receives, and cost is higher.
The model utility content
The purpose of the utility model provides a kind of peristaltic pump that prevents reverse function that has, and this peristaltic pump is simple in structure, cost is low, has the reverse function of preventing.
The above-mentioned purpose of the utility model realizes through following technological scheme: a kind of have a peristaltic pump that prevents reverse function; It comprises that transmission shaft and axial string are contained in a plurality of wriggling slide blocks that are used to push indusion tube on the transmission shaft, is characterized in that: said transmission shaft near the end face of sense cell on same circumference according to inhomogeneous fixing at least three magnet of several angle.
The peristaltic pump of the utility model is no less than three magnetic signal generation and feeler mechanism in the end face design; Obtain the signal corresponding with sense of rotation; And, distinguish the sense of rotation of peristaltic pump, when counter-rotating appears in peristaltic pump through the calculating and the analysis of control circuit to signal; The operation of forced termination infusion pump, thereby the Security and the reliability of raising infusion pump.
In the utility model, said magnet is three, and the center angle that has between the adjacent magnets is followed successively by 70 °, 120 °, 170 °.
In the utility model, said magnet is four, and the center angle that has between the adjacent magnets is followed successively by 50 °, 80 °, 100 °, 130 °.
In the utility model, said magnet is five, and the center angle that has between the adjacent magnets is followed successively by 50 °, 60 °, 70 °, 90 °, 90 °.
Compared with prior art, the utlity model has following remarkable result:
1, the utility model peristaltic pump does not need this element of code-disc (raster grid), has reduced cost and difficulty that installation brought.
2, the utility model peristaltic pump is because the stability of magnet is better than optical element, and therefore, the stability of circuit strengthens, and with low cost.
3, the utility model peristaltic pump directly detects the transmission shaft of peristaltic pump, rather than the output shaft of motor, more near the target that detects, has improved the validity that detects.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is explained further details.
Fig. 1 is that the utility model peristaltic pump is executed the overall structure schematic representation that example one is installed on the infusion pump;
Fig. 2 is that the utility model peristaltic pump is executed the side view that has partial cutaway that example one is installed on the infusion pump, shows the mounting point of peristaltic pump in infusion pump;
Fig. 3 is the utility model peristaltic pump embodiment one an overall structure schematic representation;
Fig. 4 is the utility model peristaltic pump embodiment one a end view, shows that magnet concerns in the position of peristaltic pump end face;
Fig. 5 is the different wave that clockwise and anticlockwise is exported among the utility model peristaltic pump embodiment one;
Fig. 6 is the end view among the utility model peristaltic pump embodiment two, shows that magnet concerns in the position of peristaltic pump end face;
Fig. 7 is the end view among the utility model peristaltic pump embodiment three, shows that magnet concerns in the position of peristaltic pump end face;
Description of reference numerals
1, wriggling slide block 2, the pump housing 3, Hall transducer; 4, magnet; 5, transmission shaft
Embodiment
Embodiment one
Like Fig. 1, the infusion pump that has the present embodiment peristaltic pump shown in 2; It comprises the pump housing 2, peristaltic pump, motor and control mechanism, and peristaltic pump is installed in the pump housing 2 of infusion pump, and the transmission shaft 5 of peristaltic pump links to each other with the output shaft of motor; Rotate synchronously by motor driving transmission shaft 5; Control mechanism can be controlled motor action, and control mechanism also comprises Hall transducer 3 and signal processing circuit, and Hall transducer 3 is electrically connected with signal processing circuit; Hall transducer 3 is installed in the pump housing 2, and Hall transducer 3 is the sense cell of infusion pump.
Prevent the peristaltic pump of reverse function to shown in Figure 4 having like Fig. 2; It comprises that transmission shaft 5 is contained in a plurality of wriggling slide blocks 1 that are used to push indusion tube on the transmission shaft with axially going here and there; Transmission shaft 5 near the end face of sense cell Hall transducer 3 on same circumference according to inhomogeneous fixing three magnet 4 of several angle, the center angle that has between the adjacent magnets in these three magnet 4 is followed successively by 70 °, 120 °, 170 °.
When the peristaltic pump of present embodiment is installed in the infusion pump; The mounting point of Hall transducer 3 is corresponding with the position of magnet 4; Hall transducer 3 and magnet 4 between distance of reaction be preferably 5～10mm, Hall transducer 3 can be sensed magnet 4 and induced signal is transferred to signal processing circuit, signal processing circuit is analyzed and is handled after receiving the signal that Hall transducer 3 transmission come; To judge the sense of rotation of peristaltic pump transmission shaft 5; And when detecting the signal of peristaltic pump transmission shaft 5 counter-rotatings, send the signal that pressure stops, preventing the peristaltic pump counter-rotating to motor.
The principle of the utility model is through between magnet 4 and the Hall transducer 3, near certain limit, is understanding the characteristics that produce signal, provides to circuit and analyzes required signal.Because on circumference on the end face of peristaltic pump transmission shaft 5; The signal that produces during for positive and negative select is had any different, and on same circumference, fixes three magnet 4 by the several angle difference is uneven, in the position of correspondence; Fix Hall transducer 3 and signal processing circuit thereof; Adjust the distance of magnet 4 and Hall transducer 3, when making each magnet 4 near Hall transducer 3, circuit can detect corresponding signal.So, when peristaltic pump rotated, the magnet 4 on the peristaltic pump live axle can once pass through the induction zone of Hall transducer 3, because the distribute spacing of magnet 4 is distinguishing, therefore, and different choice directions, the signal of generation is just different.As shown in Figure 5, the peristaltic pump waveform of being exported that just changes, reverses is different, because motor and peristaltic pump rotate synchronously; Turn to identical; According to analysis and the processing of circuit, just can judge the sense of rotation of peristaltic pump, thereby also can draw the sense of rotation of motor signal.When circuitry detects when being normal sense of rotation, keep detected state; When signal that detects counter-rotating or abnormal signal, system sends the signal that pressure stops to motor, and peristaltic pump is stopped.
Embodiment two
End view among the utility model peristaltic pump embodiment two is as shown in Figure 6, and different with embodiment one is, magnet 4 is four, and the center angle that has between the adjacent magnets 4 is followed successively by 50 °, 80 °, 100 °, 130 °.
Embodiment three
End view among the utility model peristaltic pump embodiment three is as shown in Figure 7, and different with embodiment one is, magnet 4 is five, and the center angle that has between the adjacent magnets 4 is followed successively by 50 °, 60 °, 70 °, 90 °, 90 °.
The foregoing description of the utility model is not the qualification to the utility model protection domain; The mode of execution of the utility model is not limited thereto; According to the foregoing of the utility model,, do not breaking away under the above-mentioned basic fundamental thought of the utility model prerequisite according to the ordinary skill knowledge and the customary means of related domain; Modification, replacement or the change of other various ways that the said structure of the utility model is made all drop within the protection domain of the utility model.
Claims (4)
1. one kind has the peristaltic pump that prevents reverse function; It comprises that transmission shaft and axial string are contained in a plurality of wriggling slide blocks that are used to push indusion tube on the transmission shaft, is characterized in that: said transmission shaft near the end face of sense cell on same circumference according to inhomogeneous fixing at least three magnet of several angle.
2. according to claim 1 have a peristaltic pump that prevents reverse function, and it is characterized in that: said magnet is three, and the center angle that has between the adjacent magnets is followed successively by 70 °, 120 °, 170 °.
3. according to claim 1 have a peristaltic pump that prevents reverse function, and it is characterized in that: said magnet is four, and the center angle that has between the adjacent magnets is followed successively by 50 °, 80 °, 100 °, 130 °.
4. according to claim 1 have a peristaltic pump that prevents reverse function, and it is characterized in that: said magnet is five, and the center angle that has between the adjacent magnets is followed successively by 50 °, 60 °, 70 °, 90 °, 90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200164296U CN202451405U (en) | 2012-01-06 | 2012-01-06 | Peristaltic pump with anti-inversion function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200164296U CN202451405U (en) | 2012-01-06 | 2012-01-06 | Peristaltic pump with anti-inversion function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202451405U true CN202451405U (en) | 2012-09-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200164296U Expired - Fee Related CN202451405U (en) | 2012-01-06 | 2012-01-06 | Peristaltic pump with anti-inversion function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202451405U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103120812A (en) * | 2013-02-01 | 2013-05-29 | 深圳玉升医疗科技有限公司 | Infusion pump |
| CN103191484A (en) * | 2013-04-10 | 2013-07-10 | 苏州泽德医疗器械有限公司 | Infusion pump |
-
2012
- 2012-01-06 CN CN2012200164296U patent/CN202451405U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103120812A (en) * | 2013-02-01 | 2013-05-29 | 深圳玉升医疗科技有限公司 | Infusion pump |
| CN103191484A (en) * | 2013-04-10 | 2013-07-10 | 苏州泽德医疗器械有限公司 | Infusion pump |
| CN103191484B (en) * | 2013-04-10 | 2015-10-28 | 苏州泽德医疗器械有限公司 | A kind of infusion pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ASS | Succession or assignment of patent right |
Owner name: GUANGZHOU SAFEWAY MEDICAL SCIENCE + TECHNOLOGY CO. Free format text: FORMER OWNER: LU PINGCHANG Effective date: 20120824 Free format text: FORMER OWNER: ZHOU MINGJIE ZHOU WENGUAN Effective date: 20120824 |
|
| C14 | Grant of patent or utility model | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 510290 GUANGZHOU, GUANGDONG PROVINCE TO: 510520 GUANGZHOU, GUANGDONG PROVINCE |
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| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120824 Address after: 510520, E, No. 1, two floor, No. two, No. 13, Guang Shan Road, Guangzhou, Guangdong, Tianhe District Patentee after: GUANGZHOU SHURUI MEDICAL TECHNOLOGY CO.,LTD. Address before: Haizhuqu District Guangzhou City, Guangdong Province, South Island Road 510290 Rome homes Kelly F-301 Co-patentee before: Zhou Mingjie Patentee before: Lu Pingchang Co-patentee before: Zhou Wenguan |
|
| DD01 | Delivery of document by public notice |
Addressee: GUANGZHOU SHURUI MEDICAL TECHNOLOGY CO.,LTD. Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120926 Termination date: 20140106 |