CN201921178U - Liquid level detection balancing device for hemodialysis - Google Patents
Liquid level detection balancing device for hemodialysis Download PDFInfo
- Publication number
- CN201921178U CN201921178U CN2011200103048U CN201120010304U CN201921178U CN 201921178 U CN201921178 U CN 201921178U CN 2011200103048 U CN2011200103048 U CN 2011200103048U CN 201120010304 U CN201120010304 U CN 201120010304U CN 201921178 U CN201921178 U CN 201921178U
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- chamber
- liquid level
- liquid
- electromagnetic valve
- level detector
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Abstract
The utility model discloses a liquid level detection balancing device for hemodialysis. One extramembranous joint at one end of a hemodialyzer is connected with the first end of a first three-way joint after being connected in series with a first liquid level detector and a second electromagnetic valve in sequence; another extramembranous joint at the other end of the hemodialyzer is connected with the first end of a second three-way joint after being connected in series with a second hydraulic pump and a third electromagnetic valve in sequence; the second end of the first three-way joint is communicated with a first chamber of a balancer; the third end of the first three-way joint is connected with a dislysate joint after being connected in series with a first electromagnetic valve and a first hydraulic pump in sequence; the second end of the second three-way joint is communicated with a second chamber of the balancer; and the third end of the second three-way joint is connected with a waste liquid joint after being connected in series with a fourth electromagnetic valve and a second liquid level detector. The balancer adopted by the utility model is used as a capacity balancing device, and thus, the control is simple and the manufacturing cost is lower; a liquid level detection mode is utilized to monitor whether a membrane in the balancer is pushed in place or not. A manufacturing process and the control are comparatively simple, and the precision is ensured.
Description
Technical field
This utility model belongs to the blood purification technical field, specifically, and particularly a kind of hemodialysis Level Detection bascule.
Background technology
At present, dialysis machine generally adopts effusion meter, pressure controling mode or dual pump mode to control the balance of dialysis solution and waste liquid in the blood purification, and existing deficiency is:
1, adopt the balance of effusion meter control dialysis solution and waste liquid, to effusion meter required precision height, effusion meter is made complicated, and needs constantly to carry out self-calibrating midway.
2, adopt pressure controling mode to realize the balance of dialysis solution and waste liquid, the pressure sensor signal fluctuation is bigger, and precision is not high.
3, adopt the dual pump mode to realize the balance of liquid and waste liquid, higher to the requirement on machining accuracy of dual pump, the cost of dual pump is higher.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of hemodialysis Level Detection bascule simple, that precision is high of controlling.
The utlity model has two kinds of technical schemes, first kind of technical scheme is as follows: a kind of hemodialysis Level Detection bascule, comprise hemodialyzer (1), it is characterized in that: static organ (2) is set in the outside of described hemodialyzer (1), the inner chamber of this static organ (2) is separated into first chamber (2a) and second chamber (2b) by diaphragm (3), the film coupling of described hemodialyzer (1) one end is connected successively by pipeline behind first liquid level detector (4) and second electromagnetic valve (5), be connected with first three way cock's (6) first end, the film coupling of hemodialyzer (1) other end is connected successively by pipeline behind second hydraulic pump (7) and the 3rd electromagnetic valve (8), is connected with second three way cock's (12) first end; Described first three way cock's (6) second end is communicated with first chamber (2a) of static organ (2) by pipeline, first three way cock's (6) the 3rd end is connected successively by pipeline behind first electromagnetic valve (9) and first hydraulic pump (10), is connected with dialysis solution joint (11); Described second three way cock's (12) second end is communicated with second chamber (2b) of static organ (2) by pipeline, second three way cock's (12) the 3rd end is connected successively by pipeline behind the 4th electromagnetic valve (13) and second liquid level detector (14), is connected with waste liquid joint (15).
In the above scheme, first hydraulic pump, second hydraulic pump be as power source, drives dialysis solution respectively, waste liquid flows.First electromagnetic valve, second electromagnetic valve, the 3rd electromagnetic valve and the 4th electromagnetic valve alternately open and close, concrete working condition is: the open and close of first electromagnetic valve, second electromagnetic valve, the 3rd electromagnetic valve and the 4th electromagnetic valve is divided into the biphase one-period that is.
In first phase, first electromagnetic valve, the 4th electromagnetic valve are opened, second electromagnetic valve, the 3rd closed electromagnetic valve, this moment, the first hydraulic pump drive dialysis solution flowed from first chamber of dialysis solution joint to static organ, the direction of diaphragm from first chamber toward second chamber in the static organ moved, make the waste liquid in second chamber flow to second liquid level detector and waste liquid joint simultaneously, in this process, the float that carries in second liquid level detector is owing to there is liquid flow, and this float is in the middle and upper part of second liquid level detector.When diaphragm is adjacent to the chamber wall of second chamber, in second liquid level detector because of no longer including liquid flow, float in second liquid level detector is parked in the bottom of second liquid level detector, after the induction apparatus that this moment, second liquid level detector carried detects the signal of float, make first electromagnetic valve, second electromagnetic valve, the 3rd electromagnetic valve and the 4th electromagnetic valve carry out second mutually by control circuit.
In second phase, second electromagnetic valve, the 3rd electromagnetic valve are opened, first electromagnetic valve, the 4th closed electromagnetic valve, mutually opposite with first, the outer waste liquid of second hydraulic pump drive hemodialyzer film this moment flows to second chamber of static organ, the direction of diaphragm from second chamber toward first chamber in the static organ moved, make dialysis fluid flow in first chamber simultaneously outside the film of first liquid level detector and hemodialyzer, in this process, the float that carries in first liquid level detector is owing to there is liquid flow, and this float is in the middle and upper part of first liquid level detector.When diaphragm is adjacent to the chamber wall of first chamber, in first liquid level detector because of no longer including liquid flow, float in first liquid level detector is parked in the bottom of first liquid level detector, after the induction apparatus that this moment, first liquid level detector carried detects the signal of float, make first electromagnetic valve, second electromagnetic valve, the 3rd electromagnetic valve and the 4th electromagnetic valve carry out next cycle again by control circuit.
The inner chamber that is combined into by first chamber and second chamber in the static organ is because given volume, when diaphragm is shifted to second chamber from first chamber, enters the dialysis solution of first chamber and waste liquid that second chamber is discharged equivalent all the time.On the contrary, when diaphragm is shifted to first chamber from second chamber, enter dialysis solution that the waste liquid of second chamber and first chamber discharge equivalent all the time.These two processes have guaranteed that the amount of liquid outside dialysis solution and the waste liquid turnover hemodialyzer film is equal fully all the time.This shows,, can accurately control the outer dialysis solution of unit interval turnover hemodialyzer film and the flow of waste liquid by the switching times of control unit interval first electromagnetic valve, second electromagnetic valve, the 3rd electromagnetic valve and the 4th electromagnetic valve.
Second kind of technical scheme of the present utility model is as follows: a kind of hemodialysis Level Detection bascule, comprise hemodialyzer (1), its key is: in the outside of described hemodialyzer (1) static organ (2) is set, the inner chamber of this static organ (2) is separated into first chamber (2a) and second chamber (2b) by diaphragm (3), the film coupling of described hemodialyzer (1) one end is connected by pipeline behind first liquid level detector (4), be connected with the liquid outlet of first three-way magnetic valve (16), the film coupling of hemodialyzer (1) other end is connected by pipeline behind second hydraulic pump (7), is connected with the liquid feeding end of second three-way magnetic valve (17); The common terminal of described first three-way magnetic valve (16) is communicated with first chamber (2a) of static organ (2) by pipeline, and the liquid feeding end of first three-way magnetic valve (16) is connected by pipeline behind first hydraulic pump (10), is connected with dialysis solution joint (11); The common terminal of described second three-way magnetic valve (17) is communicated with second chamber (2b) of static organ (2) by pipeline, and the liquid outlet of second three-way magnetic valve (17) is connected by pipeline behind second liquid level detector (14), is connected with waste liquid joint (15).
In the above scheme, first hydraulic pump, second hydraulic pump be as power source, drives dialysis solution respectively, waste liquid flows.The open and close of first three-way magnetic valve and second three-way magnetic valve also is divided into the biphase one-period that is.
In first phase, first three-way magnetic valve opens that (liquid feeding end is to the common terminal conducting, liquid outlet is closed to common terminal), second three-way magnetic valve closes that (liquid feeding end is closed to common terminal, liquid outlet is to the common terminal conducting), this moment, the first hydraulic pump drive dialysis solution flowed from first chamber of dialysis solution joint to static organ, diaphragm in the static organ is moved from first chamber toward the second chamber direction, make the waste liquid in second chamber flow to second liquid level detector and waste liquid joint simultaneously, float in this process in second liquid level detector is owing to there is liquid flow, and this float is in the middle and upper part of second liquid level detector.When diaphragm is adjacent to the chamber wall of second chamber, in second liquid level detector because of no longer including liquid flow, float in second liquid level detector is parked in the bottom of second liquid level detector, after the interior induction apparatus of second liquid level detector this moment detects the signal of float, make first three-way magnetic valve, second three-way magnetic valve carry out second phase by control circuit.
In second phase, first three-way magnetic valve closes that (liquid feeding end is closed to common terminal, liquid outlet is to the common terminal conducting), second three-way magnetic valve opens that (liquid feeding end is to the common terminal conducting, liquid outlet is closed to common terminal), mutually opposite with first, the outer waste liquid of second hydraulic pump drive hemodialyzer film this moment, second chamber to static organ flows, diaphragm in the static organ is moved from second chamber toward the first chamber direction, make dialysis fluid flow in first chamber simultaneously outside the film of first liquid level detector and hemodialyzer, float in this process in first liquid level detector is owing to there is liquid flow, and this float is in the middle and upper part of first liquid level detector.When diaphragm is adjacent to the chamber wall of first chamber, in first liquid level detector because of no longer including liquid flow, float in first liquid level detector is parked in the bottom of first liquid level detector, after the interior induction apparatus of first liquid level detector this moment detects the signal of float, make first three-way magnetic valve, second three-way magnetic valve carry out next cycle again by control circuit.
For simplified structure, make things convenient for processing and manufacturing and assembling, described static organ (2) is made up of two symmetric cavity make-ups, passes through bolting between two cavitys.
For diaphragm is installed firmly, move reliably, the edge of described diaphragm (3) is compressed by the cavity of static organ (2).
The beneficial effects of the utility model are:
1, adopt static organ as the capacitance balance device, control is simple, and manufacturing cost is lower;
2, whether the diaphragm that utilizes the Level Detection mode to monitor in the static organ promotes to put in place, and manufacturing process and control are all simpler, is easy to realize, can accurately control the outer dialysis solution of unit interval turnover hemodialyzer film and the flow of waste liquid.
Description of drawings
Fig. 1 is the structural representation of embodiment 1.
Fig. 2 is the structural representation of embodiment 2.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
Embodiment 1
As shown in Figure 1, in the outside of hemodialyzer 1 static organ 2 is set, this static organ 2 is made up of two symmetric cavity make-ups, passes through bolting between two cavitys.Be provided with diaphragm 3 in static organ 2, the edge of this diaphragm 3 is compressed by the cavity of static organ 2, and diaphragm 3 is separated into the first chamber 2a and the second chamber 2b with the inner chamber of static organ 2.The film coupling of described hemodialyzer 1 one ends is connected by the liquid outlet of pipeline with first liquid level detector 4, the inlet of first liquid level detector 4 is connected by the liquid outlet of pipeline with second electromagnetic valve 5, and the inlet of second electromagnetic valve 5 is connected by first end of pipeline with first three way cock 6; The film coupling of hemodialyzer 1 other end is connected by the liquid feeding end of pipeline with second hydraulic pump 7, the liquid outlet of second hydraulic pump 7 is connected by the liquid feeding end of pipeline with the 3rd electromagnetic valve 8, and the liquid outlet of the 3rd electromagnetic valve 8 is connected by first end of pipeline with second three way cock 12.
As can be known from Fig. 1, first three way cock's 6 second end is communicated with the first chamber 2a of static organ 2 by pipeline, first three way cock's 6 the 3rd end is connected by the liquid outlet of pipeline with first electromagnetic valve 9, the liquid feeding end of first electromagnetic valve 9 is connected by the liquid outlet of pipeline with first hydraulic pump 10, and the liquid feeding end of first hydraulic pump 10 joins by pipeline and dialysis solution joint 11.Described second three way cock's 12 second end is communicated with the second chamber 2b of static organ 2 by pipeline, second three way cock's 12 the 3rd end is connected by the liquid feeding end of pipeline with the 4th electromagnetic valve 13, the liquid outlet of the 4th electromagnetic valve 13 is connected by the liquid feeding end of pipeline with second liquid level detector 14, and the liquid outlet of second liquid level detector 14 is connected with waste liquid joint 15 by pipeline.
In the present embodiment, first liquid level detector 4 and second liquid level detector 14 carry float and induction apparatus, and the structure and the operation principle of liquid level detector are same as the prior art, do not do at this and give unnecessary details.
The operation principle of present embodiment is as follows:
First electromagnetic valve 9, second electromagnetic valve 5, the 3rd electromagnetic valve 8 and 13 alternately open and close of the 4th electromagnetic valve, concrete working condition is: the open and close of first electromagnetic valve 9, second electromagnetic valve 5, the 3rd electromagnetic valve 8 and the 4th electromagnetic valve 13 is divided into the biphase one-period that is.
In first phase, first electromagnetic valve 9, the 4th electromagnetic valve 13 are opened, second electromagnetic valve 5, the 3rd electromagnetic valve 8 are closed, this moment, first hydraulic pump, 10 driving dialysis solution flowed from the first chamber 2a of dialysis solution joint 11 to static organ 2, the direction of diaphragm 3 from the first chamber 2a toward the second chamber 2b in the static organ 2 moved, make the waste liquid among the second chamber 2b flow to second liquid level detector 14 and waste liquid joint 15 simultaneously, in this process, float in second liquid level detector 14 is owing to there is liquid flow, and this float is in the middle and upper part of second liquid level detector 14.When diaphragm 3 is adjacent to the chamber wall of the second chamber 2b, in second liquid level detector 14 because of no longer including liquid flow, float in second liquid level detector 14 is parked in the bottom of second liquid level detector 14, after this moment, second liquid level detector, 14 interior induction apparatuss detected the signal of float, make first electromagnetic valve 9, second electromagnetic valve 5, the 3rd electromagnetic valve 8 and the 4th electromagnetic valve 13 carry out second mutually by control circuit.
In second phase, second electromagnetic valve 5, the 3rd electromagnetic valve 8 is opened, first electromagnetic valve 9, the 4th electromagnetic valve 13 cuts out, mutually opposite with first, the waste liquid that this moment second, hydraulic pump 7 drove outside the hemodialyzer film flows to the second chamber 2b of static organ 2, the direction of diaphragm 3 from the second chamber 2b toward the first chamber 2a in the static organ 2 moved, make dialysis fluid flow among the first chamber 2a simultaneously outside the film of first liquid level detector 4 and hemodialyzer 1, in this process, float in first liquid level detector 4 is owing to there is liquid flow, and this float is in the middle and upper part of first liquid level detector 4.When diaphragm 3 is adjacent to the chamber wall of the first chamber 2a, in first liquid level detector 4 because of no longer including liquid flow, float in first liquid level detector 4 is parked in the bottom of first liquid level detector 4, after this moment, first liquid level detector, 4 interior induction apparatuss detected the signal of float, make first electromagnetic valve 9, second electromagnetic valve 5, the 3rd electromagnetic valve 8 and the 4th electromagnetic valve 13 carry out next cycle again by control circuit.
Embodiment 2
As shown in Figure 2, the film coupling of hemodialyzer 1 one ends is connected by the liquid outlet of pipeline with first liquid level detector 4, and the inlet of first liquid level detector 4 is connected by the liquid outlet of pipeline with first three-way magnetic valve 16; The film coupling of hemodialyzer 1 other end is connected by the inlet of pipeline with second hydraulic pump 7, and the liquid outlet of second hydraulic pump 7 is connected by the liquid feeding end of pipeline with second three-way magnetic valve 17.The common terminal of described first three-way magnetic valve 16 is communicated with the first chamber 2a of static organ 2 by pipeline, the liquid feeding end of first three-way magnetic valve 16 is connected by the liquid outlet of pipeline with first hydraulic pump 10, and the inlet of first hydraulic pump 10 joins by pipeline and dialysis solution joint 11.The common terminal of described second three-way magnetic valve 17 is communicated with the second chamber 2b of static organ 2 by pipeline, the liquid outlet of second three-way magnetic valve 17 is connected by the inlet of pipeline with second liquid level detector 14, and the pipeline that passes through of second liquid level detector 14 is connected with waste liquid joint 15.All the other structures of present embodiment are identical with embodiment 1, do not do at this and give unnecessary details.
The operation principle of present embodiment is as follows:
The open and close of first three-way magnetic valve 16 and second three-way magnetic valve 17 also is divided into the biphase one-period that is.
In first phase, first three-way magnetic valve 16 opens that (liquid feeding end is to the common terminal conducting, liquid outlet is closed to common terminal), second three-way magnetic valve 17 closes that (liquid feeding end is closed to common terminal, liquid outlet is to the common terminal conducting), this moment, first hydraulic pump, 10 driving dialysis solution flowed from the first chamber 2a of dialysis solution joint 11 to static organ 2, diaphragm 3 in the static organ 2 is moved from the first chamber 2a toward the second chamber 2b direction, make the waste liquid among the second chamber 2b flow to second liquid level detector 14 and waste liquid joint 15 simultaneously, float in this process in second liquid level detector 14 is owing to there is liquid flow, and this float is in the middle and upper part of second liquid level detector 14.When diaphragm 3 is adjacent to the chamber wall of the second chamber 2b, in second liquid level detector 14 because of no longer including liquid flow, float in second liquid level detector 14 is parked in the bottom of second liquid level detector 14, after this moment, second liquid level detector, 14 interior induction apparatuss detected the signal of float, make first three-way magnetic valve 16, second three-way magnetic valve 17 carry out second phase by control circuit.
In second phase, first three-way magnetic valve 16 closes that (liquid feeding end is closed to common terminal, liquid outlet is to the common terminal conducting), second three-way magnetic valve 17 opens that (liquid feeding end is to the common terminal conducting, liquid outlet is closed to common terminal), mutually opposite with first, this moment second, hydraulic pump 7 drove the outer waste liquid of hemodialyzer film, the second chamber 2b to static organ 2 flows, diaphragm 3 in the static organ 2 is moved from the second chamber 2b toward the first chamber 2a direction, make dialysis fluid flow among the first chamber 2a simultaneously outside the film of first liquid level detector 4 and hemodialyzer 1, float in this process in first liquid level detector 4 is owing to there is liquid flow, and this float is in the middle and upper part of first liquid level detector 4.When diaphragm 3 is adjacent to the chamber wall of the first chamber 2a, in first liquid level detector 4 because of no longer including liquid flow, float in first liquid level detector 4 is parked in the bottom of first liquid level detector 4, after this moment, first liquid level detector, 4 interior induction apparatuss detected the signal of float, make first three-way magnetic valve 16, second three-way magnetic valve 17 carry out next cycle again by control circuit.
Claims (6)
1. hemodialysis Level Detection bascule, comprise hemodialyzer (1), it is characterized in that: static organ (2) is set in the outside of described hemodialyzer (1), the inner chamber of this static organ (2) is separated into first chamber (2a) and second chamber (2b) by diaphragm (3), the film coupling of described hemodialyzer (1) one end is connected successively by pipeline behind first liquid level detector (4) and second electromagnetic valve (5), be connected with first three way cock's (6) first end, the film coupling of hemodialyzer (1) other end is connected successively by pipeline behind second hydraulic pump (7) and the 3rd electromagnetic valve (8), is connected with second three way cock's (12) first end; Described first three way cock's (6) second end is communicated with first chamber (2a) of static organ (2) by pipeline, first three way cock's (6) the 3rd end is connected successively by pipeline behind first electromagnetic valve (9) and first hydraulic pump (10), is connected with dialysis solution joint (11); Described second three way cock's (12) second end is communicated with second chamber (2b) of static organ (2) by pipeline, second three way cock's (12) the 3rd end is connected successively by pipeline behind the 4th electromagnetic valve (13) and second liquid level detector (14), is connected with waste liquid joint (15).
2. hemodialysis Level Detection bascule according to claim 1 is characterized in that: described static organ (2) is made up of two symmetric cavity make-ups, passes through bolting between two cavitys.
3. hemodialysis Level Detection bascule according to claim 2 is characterized in that: the edge of described diaphragm (3) is compressed by the cavity of static organ (2).
4. hemodialysis Level Detection bascule, comprise hemodialyzer (1), it is characterized in that: static organ (2) is set in the outside of described hemodialyzer (1), the inner chamber of this static organ (2) is separated into first chamber (2a) and second chamber (2b) by diaphragm (3), the film coupling of described hemodialyzer (1) one end is connected by pipeline behind first liquid level detector (4), be connected with the liquid outlet of first three-way magnetic valve (16), the film coupling of hemodialyzer (1) other end is connected by pipeline behind second hydraulic pump (7), is connected with the liquid feeding end of second three-way magnetic valve (17); The common terminal of described first three-way magnetic valve (16) is communicated with first chamber (2a) of static organ (2) by pipeline, and the liquid feeding end of first three-way magnetic valve (16) is connected by pipeline behind first hydraulic pump (10), is connected with dialysis solution joint (11); The common terminal of described second three-way magnetic valve (17) is communicated with second chamber (2b) of static organ (2) by pipeline, and the liquid outlet of second three-way magnetic valve (17) is connected by pipeline behind second liquid level detector (14), is connected with waste liquid joint (15).
5. hemodialysis Level Detection bascule according to claim 4 is characterized in that: described static organ (2) is made up of two symmetric cavity make-ups, passes through bolting between two cavitys.
6. hemodialysis Level Detection bascule according to claim 5 is characterized in that: the edge of described diaphragm (3) is compressed by the cavity of static organ (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200103048U CN201921178U (en) | 2011-01-14 | 2011-01-14 | Liquid level detection balancing device for hemodialysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200103048U CN201921178U (en) | 2011-01-14 | 2011-01-14 | Liquid level detection balancing device for hemodialysis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201921178U true CN201921178U (en) | 2011-08-10 |
Family
ID=44425053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200103048U Expired - Lifetime CN201921178U (en) | 2011-01-14 | 2011-01-14 | Liquid level detection balancing device for hemodialysis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201921178U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102068722A (en) * | 2011-01-14 | 2011-05-25 | 重庆山外山科技有限公司 | Liquid level detection balance device used for hemodialysis |
-
2011
- 2011-01-14 CN CN2011200103048U patent/CN201921178U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102068722A (en) * | 2011-01-14 | 2011-05-25 | 重庆山外山科技有限公司 | Liquid level detection balance device used for hemodialysis |
| CN102068722B (en) * | 2011-01-14 | 2012-04-18 | 重庆山外山科技有限公司 | Liquid level detection balance device used for hemodialysis |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110810 Effective date of abandoning: 20120502 |