CN2531421Y - Automatic liquid level control device for central liquid supply system - Google Patents
Automatic liquid level control device for central liquid supply system Download PDFInfo
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- CN2531421Y CN2531421Y CN 02202785 CN02202785U CN2531421Y CN 2531421 Y CN2531421 Y CN 2531421Y CN 02202785 CN02202785 CN 02202785 CN 02202785 U CN02202785 U CN 02202785U CN 2531421 Y CN2531421 Y CN 2531421Y
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- liquid level
- liquid
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- supply system
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Abstract
Disclosed is a liquid level auto control device for centralized liquid supply system, which belongs to blood dialysis equipment field. The utility model solves the problems of dialysis machine alarm caused by high level in the dialysate concentration automatic mixing and dialysate supply process and existing bubbles caused by low level in the transmission pipeline. The utility model comprises a liquid storage tack with a float therein and one or two proximity switches which are arranged outside of the liquid storage tank at the corresponding position to the set liquid level. The concentration automatic mixing device and the liquid level automatic control device are separately composed. The device can make the precision of dialysate mixing concentration to 0.3%. The liquid level is controlled stably between the upper limit and lower limit set by the buffer device, therefore guaranteeing supplies of Liquid A and Liquid B of the dialysis machine and providing a relatively stable pressure environment. The whole circuit adopts 24V low voltage controlling, which can guarantee safety of medical staff, therefore, the utility model is a very smart method to successfully solve the contradiction between high precision, convenient operation and high cost, which is suitable for various dialysis machines.
Description
Technical field: the proportioning and the feedway of employed dislysate when the utility model belongs to haemodialysis in the hemodialysis apparatus field, particularly central liquid supply system.
Background technology: dislysate is to be mixed by the A liquid of acidity and alkaline B liquid, and the concentration of A liquid, B liquid directly affects the potential of hydrogen of dislysate, also just directly influences patient's dialysis quality, so concentration proportioning is a key issue.At present, the domestic central liquid supply system that does not still have full-automatic integral, more hospital is still by the manual dosing of technician, is transported to by every hemo system by more than barrels of ground of nurse then.Technician, nurse pay heavy manual labor every day for this reason.Have only the actual conditions of individual hospitals, done some very simple and crude manual central fluid supply devices according to oneself.This simple device one is to overcome the error that the inside and outside difference owing to optical medium density of container causes vision, the 2nd, and it is inside and outside because the error that capillary influence causes to overcome container.
Though similar equipment is arranged in the world, but some imperfection parts is arranged.The one, consider the problem of cost, to needing the separate unit hemo system of central fluid supply, the concentrate matching device is not installed during fabrication, but the unified concentrate proportioning of carrying out, and then concentrate and supply with, this common agitator volume is huge, when the liquid level of liquid in bucket is in a high position, cause higher pressure for the A liquid of hemo system, the supply of B liquid, cause the hemo system warning; When the liquid level in the bucket is in low level, can there be bubble in the conveyance conduit, can influence the stability of hemodialysis process thus. The 2nd, this central liquid supply system costs an arm and a leg and is unsuitable for the national conditions of China.
The hemo system brand that domestic some hospital uses is various, and the concentration difference of the dislysate that every hemo system is required can't be used external the sort of supporting central liquid supply system at all.And the hemo system of China's import self all has been equipped with liquid dispensing device, if carry out dosing again, has improved operating cost virtually.
Summary of the invention: the utility model purpose is to solve the hemo system that causes because of a high position in the dislysate supply process to report to the police, reach the air bubble problem that in conveyance conduit, exists because of low level, solve dialysate concentration automatic mixing problem simultaneously, to adapt to of the different requirements of different hemo systems to dialysate concentration.
The utility model comprises the fluid reservoir that has inlet and liquid outlet, it is characterized in that being provided with in fluid reservoir a float, and fluid reservoir is outer to be provided with two or one near switch with setting the liquid level correspondence position, is connected with control circuit near switch.
Respectively be provided with one (amounting to two) respectively near switch as fluid reservoir is outer with the setting liquid level upper limit, lower limit correspondence position, this device can be used for automatic liquid level control, i.e. snubber assembly.
Be provided with one near switch as fluid reservoir is outer with setting the liquid level correspondence position, this device can be used for automatic concentration proportioning.
The utility model advantage: 1, this device can make dislysate matched proportion density largely be accurate to 0.3%; 2, owing to adopt the automatic liquid level control device, its control circuit system can make liquid level rise to going up in limited time of snubber assembly, cuts off the power supply of liquid-feeding pump, stops liquor charging; Reduce to down in limited time when liquid level, the power supply of demand working liquid-feeding pump recovers liquor charging, thereby, guaranteed the A liquid of dialysis machine, the supply of B liquid, have a relatively-stationary pressure differential, a comparatively pressure stable environment is provided; 3, entire circuit adopts the 24V low voltage control, can guarantee medical worker's safety, therefore, this is a kind of very dexterous method, has solved precision height, easy to operate and contradiction that cost is high well.
Description of drawings:
Fig. 1, embodiment 1 are used for the device synoptic diagram of automatic liquid level control;
Fig. 2, embodiment 2 are used for the device synoptic diagram of automatic concentration proportioning.
Embodiment:
As shown in Figure 1, this central liquid supply system automatic liquid level control device, be in fluid reservoir 1 (also being surge tank), to be provided with a magnetic float 2, the outside of fluid reservoir respectively is provided with one (amounting to two) respectively near switch (this example is selected magnetic coupling switch) 3 with the upper limit, the lower limit correspondence position of setting liquid level, connect control circuit near switch, the automatic fluid level control device of this example can be used for the dislysate snubber assembly in the central liquid supply system.
This automatic liquid level control device is prescribed a time limit when liquid level rises to going up of snubber assembly under control circuit system control, and control circuit can cut off the power supply of liquid-feeding pump 4 immediately, stops liquor charging; Reduce to down in limited time when liquid level, control circuit is understood the power supply of demand working liquid-feeding pump, recovers liquor charging.Thereby, guaranteed the A liquid of dialysis machine, the supply of B liquid, have a relatively-stationary pressure differential, a comparatively pressure stable environment is provided.
As shown in Figure 2, this central liquid supply system automatic liquid level control device, comprise the fluid reservoir 1 (also being Agitation Tank) that has inlet and liquid outlet, in fluid reservoir, be provided with a magnetic float 2, fluid reservoir is outer to be provided with one near switch 3 with the liquid level correspondence position of setting, connect control circuit near switch, this routine automatic liquid level control device can be used for the dialysate concentration automatic matching device in the central liquid supply system.
In the liquid dosage process, the amount of A, B liquid is according to what of one day patient to determine according to the calculating of concentration, will use how many A pulvis, how many B pulvis, correspondingly will with how many reverse osmosis water configure, that is to say whether whether concentration accurately depends primarily on the amount of reverse osmosis water an amount of.At first calculate water consumption, will be transferred to predetermined graduated near switch, press the button that discharges water, when waiting water level to arrive, provide a signal near switch to control circuit, control circuit control reverse osmosis water stops to flow into, and realizes concentration automatic mixing purpose.
Claims (4)
1, a kind of central liquid supply system automatic liquid level control device, comprise the fluid reservoir that has inlet and liquid outlet, it is characterized in that being provided with in fluid reservoir a float, fluid reservoir is outer to be provided with two or one near switch with setting the liquid level correspondence position, is connected with control circuit near switch.
2, central liquid supply system according to claim 1 automatic liquid level control device, it is characterized in that being provided with in the fluid reservoir float, fluid reservoir is outer respectively to be provided with one respectively near switch with the setting liquid level upper limit, lower limit correspondence position, be used for the automatic liquid level control device of central liquid supply system, also be snubber assembly.
3, central liquid supply system according to claim 1 automatic liquid level control device, it is characterized in that being provided with in the fluid reservoir float, fluid reservoir is outer to be provided with one near switch with setting the liquid level correspondence position, is used for the automatic concentration proportioning device of central liquid supply system.
4, according to claim 1 or 2 or 3 described central liquid supply system automatic liquid level control device, it is characterized in that being provided with in the fluid reservoir magnetic float, is magnetic coupling switch near switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02202785 CN2531421Y (en) | 2002-02-01 | 2002-02-01 | Automatic liquid level control device for central liquid supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02202785 CN2531421Y (en) | 2002-02-01 | 2002-02-01 | Automatic liquid level control device for central liquid supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2531421Y true CN2531421Y (en) | 2003-01-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02202785 Expired - Fee Related CN2531421Y (en) | 2002-02-01 | 2002-02-01 | Automatic liquid level control device for central liquid supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2531421Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103823485A (en) * | 2014-02-24 | 2014-05-28 | 广东宝莱特医用科技股份有限公司 | System and method for automatically controlling and detecting ionic concentration |
| CN112578823A (en) * | 2020-12-25 | 2021-03-30 | 浙江瑞速电器科技有限公司 | Liquid concentration detection proportioner |
| CN113934236A (en) * | 2021-10-12 | 2022-01-14 | 中元汇吉生物技术股份有限公司 | Substrate device and substrate control system thereof |
-
2002
- 2002-02-01 CN CN 02202785 patent/CN2531421Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103823485A (en) * | 2014-02-24 | 2014-05-28 | 广东宝莱特医用科技股份有限公司 | System and method for automatically controlling and detecting ionic concentration |
| CN112578823A (en) * | 2020-12-25 | 2021-03-30 | 浙江瑞速电器科技有限公司 | Liquid concentration detection proportioner |
| CN113934236A (en) * | 2021-10-12 | 2022-01-14 | 中元汇吉生物技术股份有限公司 | Substrate device and substrate control system thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |