CN117587889A - Biochemical analyzer water supply system - Google Patents

Biochemical analyzer water supply system Download PDF

Info

Publication number
CN117587889A
CN117587889A CN202311548474.5A CN202311548474A CN117587889A CN 117587889 A CN117587889 A CN 117587889A CN 202311548474 A CN202311548474 A CN 202311548474A CN 117587889 A CN117587889 A CN 117587889A
Authority
CN
China
Prior art keywords
water supply
control valve
water
pressure
cavity
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.)
Pending
Application number
CN202311548474.5A
Other languages
Chinese (zh)
Inventor
姚斌
王斌
余世密
李建鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Caretium Medical Instruments Co ltd
Original Assignee
Caretium Medical Instruments Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Caretium Medical Instruments Co ltd filed Critical Caretium Medical Instruments Co ltd
Priority to CN202311548474.5A priority Critical patent/CN117587889A/en
Publication of CN117587889A publication Critical patent/CN117587889A/en
Pending legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
    • E03B7/078—Combined units with different devices; Arrangement of different devices with respect to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/08—Cleaning containers, e.g. tanks
    • B08B9/093—Cleaning containers, e.g. tanks by the force of jets or sprays
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B11/00—Arrangements or adaptations of tanks for water supply
    • E03B11/10—Arrangements or adaptations of tanks for water supply for public or like main water supply
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
    • E03B7/072—Arrangement of flowmeters
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
    • E03B7/075—Arrangement of devices for control of pressure or flow rate
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
    • E03B7/08—Arrangement of draining devices, e.g. manual shut-off valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Analysis And Handling Materials Therefor (AREA)

Abstract

The invention provides a water supply system of a biochemical analyzer, belonging to the field of special equipment of the analyzer; the water supply system of the biochemical analyzer consists of three sealed cavities, three pressure sensors, a water supply pump, a plurality of control valves and corresponding pipelines; the water supply pump supplies water to the three sealed cavities in a pressurizing way, so that air in the sealed cavities is compressed to form pressure; monitoring pressure conditions within the three sealed volumes by means of three pressure sensors on the sealed volumes; the water supply and the water outlet of the pipeline are controlled by matching the opening and closing of the control valve; thereby realizing constant pressure water supply of the three sealed cavities in different pressure ranges respectively; the invention has the characteristics of low use cost, simple and convenient maintenance, remote operation, high pressure adjustment resolution, and the like.

Description

Biochemical analyzer water supply system
Technical Field
The invention relates to a water supply system of a biochemical analyzer, belonging to the field of special equipment of the analyzer.
Background
The water supply system of the biochemical analyzer is an important component of the biochemical analyzer, and the stability and the reliability of the water supply system have important influence on the performance and the precision of the biochemical analyzer. The water supply system of the existing biochemical analyzer mainly comprises two types of direct water supply and constant pressure water supply.
The direct water supply system regulates the water quantity through the pump and the throttling device, and the defect of the method is that the throttling device needs to be matched in the debugging process, and when the performance of the pump is declined, the water supply flow is weakened, and the throttling device needs to be regulated to restore the water supply flow to the original value. In addition, when the performance of the pump declines to a certain extent, normal water quantity cannot be ensured even if the throttling device is removed, and only a new pump can be replaced, so that the maintenance cost is high. In addition, pump flow and pressure are matched to water supply requirements, which can result in wasted performance or shorter pump life.
The constant pressure water supply system regulates pressure through air pressure, precisely regulates pressure through a pneumatic precise pressure regulating valve and controls a water supply path through an electromagnetic valve. The pressure regulating valve has the advantages of high pressure precision and stable pressure, but has the defects of higher cost, and the pressure regulated by the precise pressure regulating valve can drift or malfunction after long-term use, so that the pressure regulating valve needs to be regulated or maintained by a professional, and a user is not easy to remove the malfunction.
Therefore, the invention aims to realize constant pressure water supply by a simple method, reduce maintenance work caused by device performance degradation, realize water supply pressure regulation by software and facilitate remote maintenance.
Disclosure of Invention
The invention achieves the above purpose through the following detailed technical scheme:
a water supply system of a biochemical analyzer comprises a sealed cavity, a pressure sensor, a water supply pump and a plurality of control valves; the sealed cavity is an airtight cavity, a sensor interface is arranged at the top of the sealed cavity, and a water supply port, a water outlet and a water outlet are arranged at the bottom of the sealed cavity; the water outlet is higher than the water supply port and the water discharge port; the pressure sensor is connected to the top of the sealed containing cavity through the sensor interface; the control valve comprises a water supply control valve, a water outlet control valve and a water discharge control valve; the water supply port is connected with the water outlet end of the water supply pump through the water supply control valve; the rated pressure of the water supply pump is larger than the water supply pressure of the biochemical analyzer, and the water supply flow under the rated pressure is larger than the total water supply demand of the system; the water outlet is connected with a water pipeline of the biochemical analyzer through the water outlet control valve; the water outlet is connected with a drainage pipeline of a laboratory through the drainage control valve.
The sealed containing cavity comprises an inner wall cleaning sealing cavity, an outer wall cleaning sealing cavity and a reaction cup water supply sealing cavity; the pressure sensor comprises a first pressure sensor, a second pressure sensor and a third pressure sensor; the water supply control valve comprises a total water supply control valve, a first connection control valve and a second connection control valve; the water outlet control valve comprises a first end control valve, a second end control valve and a third end control valve;
the top of the inner wall cleaning sealing cavity is connected with the first pressure sensor, a water supply port at the bottom of the inner wall cleaning sealing cavity is connected with a water supply pump through the total water supply control valve, and a water outlet at the bottom of the inner wall cleaning sealing cavity is connected with the inner wall of a needle of the biochemical analyzer through a first tail end control valve; the bottom of the inner wall cleaning sealing cavity is also provided with a first connecting port and a second connecting port, and the first connecting port is connected with a water supply port at the bottom of the outer wall cleaning sealing cavity through the first connecting control valve; the second joint port is connected with a water supply port at the bottom of the water supply sealing cavity of the reaction cup through the second joint control valve;
the top of the outer wall cleaning sealing cavity is connected with the second pressure sensor, and a water outlet at the bottom of the outer wall cleaning sealing cavity is connected with a cleaning tank of the biochemical analyzer through the second tail end control valve;
the top of the reaction cup water supply sealing cavity is connected with the third pressure sensor, and a water outlet at the bottom of the reaction cup water supply sealing cavity is connected with a reaction cup water supply pipeline of the biochemical analyzer through the third tail end control valve.
The main water supply control valve is a three-way control valve and comprises an inlet, an outlet A and an outlet B; the inlet connection outlet A or the inlet connection outlet B can be selectively controlled by controlling the total water supply control valve; the inlet of the main water supply control valve is connected with the water outlet end of the water supply pump, the outlet A of the main water supply control valve is connected with the water supply port at the bottom of the inner wall cleaning seal cavity, and the outlet B of the main water supply control valve is connected back to the water supply tank through a pipeline.
Wherein the control valve is an electromagnetic valve; the main water supply control valve is a two-position three-way electromagnetic valve; the first connecting control valve, the second connecting control valve, the first tail end control valve, the second tail end control valve and the third tail end control valve are two-position two-way electromagnetic valves.
The water outlet of the sealed cavity can be branched into a plurality of water outlets through pipelines, and the water outlet is controlled by one water outlet control valve or a plurality of water outlet control valves. The top of the sealed containing cavity can be provided with a pressurizing port, and the control valve further comprises a pressurizing control valve; the pressurization control valve is connected between the pressurization port and a compressed air source.
Wherein, the water supply system of the biochemical analyzer also comprises a system control unit; the system control unit can collect data of the pressure sensor and control the water supply pump and each control valve; the system control unit is a remote terminal unit.
The invention has the beneficial effects that:
1. and (3) accurate control: the pressure sensor and software control can accurately regulate the pressure in the sealed cavity and the supply of liquid, so that more effective cleaning and water supply are realized.
2. Remote operation: through software remote control, pressure fine adjustment and system debugging can be conveniently carried out, and working efficiency and convenience are improved.
3. The service life is prolonged: through the tee bend design of total water supply control valve, alleviate water hammer effect and reduce motor switching frequency, effectively prolong the life of motor, improve stability and the persistence of system simultaneously.
4. Easy to maintain: the system has simple design, clear structure and convenient maintenance.
Drawings
FIG. 1 is a schematic diagram showing the connection of a water supply system of a biochemical analyzer according to the first embodiment.
FIG. 2 is a schematic diagram showing the connection of a water supply system of a biochemical analyzer according to the second embodiment.
Detailed Description
The invention is described in detail below with reference to the drawings and the specific embodiments.
Embodiment one:
as shown in figure 1, the water supply system of the biochemical analyzer consists of three sealed cavities, three pressure sensors, a water supply pump 1, a plurality of control valves and corresponding pipelines.
The sealed appearance chamber is cylindric, and sealed appearance chamber includes: an inner wall cleaning seal chamber 21, an outer wall cleaning seal chamber 22, and a reaction cup water supply seal chamber 23; the bottom of the inner wall cleaning sealing cavity 21 is provided with a water outlet, a water supply port, a water outlet and two connecting ports, and the top is provided with a pressure sensor interface; the two connecting ports are a first connecting port and a second connecting port respectively; the bottom of the outer wall cleaning sealing cavity 22 and the bottom of the reaction cup water supply sealing cavity 23 are provided with a water outlet, a water supply port and a water outlet, and the top is provided with a pressure sensor interface.
The pressure sensor includes: a first pressure sensor 51, a second pressure sensor 52, a third pressure sensor 53; the first pressure sensor 51 is connected to a pressure sensor interface at the top of the inner wall cleaning seal cavity 21; the second pressure sensor 52 is connected to a pressure sensor interface at the top of the outer wall cleaning seal chamber 22; the third pressure sensor 53 is connected to the pressure sensor interface at the top of the reaction cup water supply sealing cavity 23.
The control valve includes: a total water supply control valve 11, a first coupling control valve 12, a second coupling control valve 13, a first drain control valve 31, a second drain control valve 32, a third drain control valve 33, a first end control valve 41, a second end control valve 42, and a third end control valve 43;
wherein the total water supply control valve 11, the first coupling control valve 12, the second coupling control valve 13, the first drain control valve 31, the second drain control valve 32, the third drain control valve 33, the first end control valve 41 and the second end control valve 42 are each provided with one; the third end control valve 43 is provided with four;
the main water supply control valve 11 is a two-position three-way electromagnetic valve and comprises an inlet, an outlet A and an outlet B; the inlet connection outlet a or the inlet connection outlet B can be selectively controlled by controlling the total water supply control valve 11;
the first coupling control valve 12, the second coupling control valve 13, the first drain control valve 31, the second drain control valve 32, the third drain control valve 33, the first end control valve 41, the second end control valve 42 and the third end control valve 43 are all two-position two-way solenoid valves.
The first drain control valve 31, the second drain control valve 32 and the third drain control valve 33 are respectively connected to the drain ports at the bottoms of the inner wall cleaning seal cavity 21, the outer wall cleaning seal cavity 22 and the reaction cup water supply seal cavity 23, and the other end is communicated with a sewer of a laboratory for draining water in the three seal cavities when needed.
One end of the first connection control valve 12 is connected to a first connection port of the inner wall cleaning seal cavity 21 through a pipeline, and the other end of the first connection control valve is connected to a water supply port of the outer wall cleaning seal cavity 22 through a pipeline; one end of the second joint control valve 13 is connected to a second joint port of the inner wall cleaning seal cavity 21 through a pipeline, and the other end of the second joint control valve is connected to a water supply port of the reaction cup water supply seal cavity 23 through a pipeline.
One end of the first tail end control valve 41 is connected to the water outlet of the inner wall cleaning seal cavity 21 through a pipeline, and the other end of the first tail end control valve is simultaneously connected with the reagent needle of the biochemical analyzer and the needle inner wall of the sample needle through a three-way pipeline; one end of the second tail end control valve 42 is connected to the water outlet of the outer wall cleaning sealing cavity 22 through a pipeline, and the other end of the second tail end control valve is simultaneously connected with two cleaning tanks of the biochemical analyzer through a three-way pipeline; the third tail end control valve 43 is provided with four, one end is simultaneously connected to the water outlet of the reaction cup water supply sealing cavity 23 through a five-way pipeline, and the other end is respectively connected with four pipelines to supply water to the reaction cup of the biochemical analyzer;
the inlet of the water supply pump 1 is connected with the water supply tank through a pipeline so as to extract water in the water supply tank, the outlet of the water supply pump 1 is connected with the inlet of the total water supply control valve 11 through a pipeline, the outlet A of the total water supply control valve 11 is connected with the water supply port at the bottom of the inner wall cleaning seal cavity 21 through a pipeline, and the outlet B of the total water supply control valve 11 is connected with the water supply tank for water supply back through a pipeline. The water supply pump 1 provides the water quantity of the whole water supply system of the biochemical analyzer, the flow rate of the water supply system is larger than the total water supply demand of the system, and a sufficient margin is reserved; the rated pressure of the water supply pump 1 is larger than the cleaning water supply pressure of the inner walls of the reagent needle and the sample needle of the biochemical analyzer, and the water supply flow under the rated pressure is larger than the total water supply demand of the system;
the working principle of the water supply system of the biochemical analyzer is as follows:
firstly, clearing water in the three sealed cavities, filling air in the three sealed cavities, and enabling the first connecting control valve 12, the second connecting control valve 13, the first drainage control valve 31, the second drainage control valve 32, the third drainage control valve 33, the first tail end control valve 41, the second tail end control valve 42 and the third tail end control valve 43 to be in a closed state; then the water supply pump 1 is opened, and the inlet of the total water supply control valve 11 is controlled to be connected with the outlet A; the water supply pump 1 is communicated with a water supply port at the bottom of the inner wall cleaning seal cavity 21, and the water supply pump 1 pumps water in the water supply tank and supplies the water into the inner wall cleaning seal cavity 21 under pressure; the pressure value of which is monitored by a first pressure sensor 51; when the pressure in the cavity is continuously increased after the water supplied by the water supply pump 1 continuously enters the inner wall cleaning sealing cavity 21, and when the pressure reaches the upper limit of the inner wall cleaning water supply pressure, the inlet of the total water supply control valve 11 is controlled to be connected with the outlet B, and the water flows back to the water supply tank. When the pressure in the inner wall cleaning sealing cavity 21 is reduced to the lower limit of the pressure of the inner wall cleaning water supply, the inlet of the total water supply control valve 11 is controlled to be connected with the outlet A, and the water supply pump 1 supplies water to enter the inner wall cleaning sealing cavity 21 again for water supplementing.
The inner wall cleaning process of the sample needle is that the first end control valve 41 is opened, the inner wall cleaning sealing cavity 21 supplies water to the reagent needle of the biochemical analyzer and the inner wall of the sample needle at the inner wall cleaning working pressure, and the water supply time is controlled by the opening time of the first end control valve 41. Because the water supply pressure depends on the inner wall cleaning sealing cavity 21, the pressure of the inner wall cleaning sealing cavity 21 is determined by the space proportion of air and water in the cavity, namely the pressure in the cavity is formed by compressing the original air, the pressure is in direct proportion to the compression degree of the original air in the cavity, and the pressure depends on the injected water quantity, so that the regulation is easy; the pressure of the inner wall cleaning seal cavity 21 can be monitored by the first pressure sensor 51 and can be accurately controlled by adjusting the water injection quantity by software, the pressure can be finely adjusted according to the needs, any hardware element is not required to be changed, the pressure adjusting process can be remotely controlled, and after-sale remote guidance or debugging is facilitated.
The first drain control valve 31 at the bottom of the inner wall cleaning seal chamber 21 is used for draining, and when the first drain control valve 31 and the first end control valve 41 are simultaneously opened, the residual water in the inner wall cleaning seal chamber 21 is drained by the action of gravity.
The outer wall cleaning seal chamber 22 is supplied with water from the inner wall cleaning seal chamber through the first coupling control valve 12; since the inner wall cleaning seal chamber 21 is pressurized more than the outer wall cleaning seal chamber 22, when the first coupling control valve 12 is opened, water flows from the inner wall cleaning seal chamber 21 to the outer wall cleaning seal chamber 22; in the initial state, the outer wall cleaning seal chamber 22 is filled with air at a pressure of one atmosphere, when water continuously flows from the inner wall cleaning seal chamber 21 to the outer wall cleaning seal chamber 22, the pressure in the outer wall cleaning seal chamber 22 is continuously increased, the pressure value is monitored by the second pressure sensor 52, when the pressure reaches the upper limit of the outer wall cleaning pressure, the first connection control valve 12 is closed, the water supply to the outer wall cleaning seal chamber 22 is stopped, and when the pressure in the chamber reaches the lower limit of the outer wall cleaning pressure, the first connection control valve 12 is opened for water replenishment.
The sample needle outer wall cleaning process is that the second end control valve 42 is opened, the outer wall cleaning seal cavity 22 supplies water to the cleaning pool at the working pressure of the cleaning pool, and the water supply time is controlled by the opening time of the second end control valve 42. Because the water supply pressure depends on the pressure of the outer wall cleaning sealing cavity 22, the pressure of the outer wall cleaning sealing cavity 22 is determined by the space proportion of air and water in the cavity, namely, the pressure in the cavity is formed by compressing the original air, the pressure is proportional to the compression degree of the original air in the cavity, and the pressure depends on the injected water quantity, so that the pressure is easy to adjust. The pressure of the outer wall cleaning sealing cavity 22 can be monitored by the second pressure sensor 52 and can be accurately controlled by adjusting the water injection quantity by software, the pressure can be finely adjusted according to the needs, any hardware element is not required to be changed, the pressure adjusting process can be remotely controlled, and the after-sale remote guidance or debugging is convenient;
the second drain control valve 32 at the bottom of the outer wall cleaning seal chamber 22 is used for draining, and when the second drain control valve 32 and the second end control valve 42 are simultaneously opened, the residual water in the outer wall cleaning seal chamber 22 is drained by the action of gravity.
The reaction cup water supply sealing cavity 23 is used for supplying water from the inner wall cleaning sealing cavity through the second coupling control valve 13; since the pressure of the inner wall cleaning seal chamber 21 is greater than that of the reaction cup water supply seal chamber 23, when the second coupling control valve 13 is opened, water flows from the inner wall cleaning seal chamber 21 to the reaction cup water supply seal chamber 23; in the initial state, the reaction cup water supply sealing cavity 23 is filled with air, the pressure is one atmosphere, when the water continuously flows into the reaction cup water supply sealing cavity 23 from the inner wall cleaning sealing cavity 21, the pressure in the reaction cup water supply sealing cavity 23 is continuously increased, the pressure value is monitored by the second pressure sensor 52, when the pressure reaches the upper limit of the outer wall cleaning pressure, the second linkage control valve 13 is closed, the water supply to the reaction cup water supply sealing cavity 23 is stopped, and when the pressure in the cavity reaches the lower limit of the outer wall cleaning pressure, the second linkage control valve 13 is opened for supplementing water.
The reaction cup water supply process is that the third end control valve 43 is opened, the reaction cup water supply sealing cavity supplies water to the reaction cup, the water supply amount is controlled by the opening time of the four third end control valves 43, the opening time of the four third end control valves 43 is basically consistent, and the water supply time of each path can be respectively adjusted according to the flow resistance condition. The pressure of the reaction cup water supply sealing cavity 23 is determined by the space proportion of the air and water in the cavity, namely the pressure in the cavity is formed by compressing the original air, the pressure is proportional to the compression degree of the original air in the cavity, the pressure depends on the injected water quantity, and the pressure is easy to adjust. The pressure of the reaction cup water supply sealing cavity 23 can be monitored by the third pressure sensor 53 and can be accurately controlled by adjusting the water injection quantity by software, the pressure can be finely adjusted according to the needs, any hardware element is not required to be changed, the pressure adjusting process can be remotely controlled, and the after-sale remote guidance or debugging is convenient;
the third drain control valve 33 at the bottom of the reaction cup water supply sealing cavity 23 is used for draining, and when the third drain control valve 33 and the third tail end control valve 43 are simultaneously opened, the residual water in the reaction cup water supply sealing cavity 23 is drained under the action of gravity.
The total water supply control valve 11 controls water supply in a backflow rather than direct disconnection mode, so that damage to the motor and the pipeline caused by water hammer effect is reduced, switching frequency of the motor is reduced, and service life of the motor is prolonged.
The pressure in the sealed cavity is determined by the space proportion of the air and water in the cavity, namely the pressure in the cavity is formed by compressing the original air, the pressure is proportional to the compression degree of the original air in the cavity, and the pressure depends on the injected water quantity; when the pressure in the cavity reaches the set pressure, the larger the air space in the cavity is, the higher the adjusting resolution is, namely the smaller the force change of the water seal Rong Qiangya with the same volume is added at the moment; therefore, the method of increasing the total volume of the sealed cavity can be used for realizing that when the pressure in the cavity reaches the set pressure, a larger air space is provided, so that the adjustment resolution of the water supply system is improved, and the accurate control of the pressure in the sealed cavity is realized.
Embodiment two:
as shown in fig. 2, the second embodiment adds a first pressurizing port 61, a second pressurizing port 62, a third pressurizing port 63, a first pressurizing control valve 64, a second pressurizing control valve 65, and a third pressurizing control valve 65 on the basis of the first embodiment; the first pressurizing port 61 is arranged at the top of the inner wall cleaning sealing cavity 21 and communicated into the cavity, and the first pressurizing control valve 64 is connected between the first pressurizing port 61 and a compressed air source through a pipeline; the second pressurizing port 62 is arranged at the top of the outer wall cleaning sealing cavity 22 and communicated into the cavity, and the second pressurizing control valve 65 is connected between the second pressurizing port 62 and the compressed air source through a pipeline; the third pressurizing port 63 is arranged at the top of the reaction cup water supply sealing cavity 23 and communicated into the cavity, and the third pressurizing control valve 66 is connected between the third pressurizing port 63 and the compressed air source through a pipeline.
When the air pressure in the sealed cavity becomes smaller and the air space becomes smaller due to insufficient tightness of the interface of the pressure sensor and the like when the inner wall cleaning sealed cavity 21, the outer wall cleaning sealed cavity 22 or the reaction cup water supply sealed cavity 23 is used, the adjusting resolution thereof will be reduced, the control accuracy of the pressure of the sealed cavity will be reduced, and at this time, compressed air can be added to increase the air pressure in the sealed cavity by opening the first pressurizing control valve 64, the second pressurizing control valve 65 or the third pressurizing control valve 65, so that the air space in the sealed cavity is not further compressed, thereby ensuring the control accuracy; the operation of adding compressed air can also be performed when the sealed cavity is not out of air, so that the air space in the cavity is increased, and the control precision of the system pressure is improved.
The pressure of the water supply system of the biochemical analyzer can be controlled by opening and closing a plurality of original electromagnetic valves and then matching with the opening and closing of the first pressurizing control valve 64, the second pressurizing control valve 65 and the third pressurizing control valve 65, so that the pressure control flexibility of the water supply system of the biochemical analyzer is improved.
The foregoing examples merely illustrate some embodiments of the invention, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims (9)

1. A water supply system of a biochemical analyzer comprises a sealed cavity, a pressure sensor, a water supply pump (1) and a plurality of control valves; the sealed cavity is an airtight cavity, a sensor interface is arranged at the top of the sealed cavity, and a water supply port, a water outlet and a water outlet are arranged at the bottom of the sealed cavity; the pressure sensor is connected to the top of the sealed containing cavity through the sensor interface; the control valve comprises a water supply control valve, a water outlet control valve and a water discharge control valve; the water supply port is connected with the water outlet end of the water supply pump (1) through the water supply control valve; the rated pressure of the water supply pump (1) is larger than the water supply pressure of the biochemical analyzer, and the water supply flow rate under the rated pressure is larger than the total water supply demand of the system; the water outlet is connected with a water pipeline of the biochemical analyzer through the water outlet control valve; the water outlet is connected with a drainage pipeline of a laboratory through the drainage control valve.
2. A biochemical analyzer water supply according to claim 1, wherein the sealed volume comprises an inner wall cleaning seal chamber (21), an outer wall cleaning seal chamber (22) and a reaction cup water supply seal chamber (23); the pressure sensors include a first pressure sensor (51), a second pressure sensor (52), and a third pressure sensor (53); the water supply control valve comprises a total water supply control valve (11), a first connection control valve (12) and a second connection control valve (13); the water outlet control valve comprises a first end control valve (41), a second end control valve (42) and a third end control valve (43);
the top of the inner wall cleaning sealing cavity (21) is connected with the first pressure sensor (51), a water supply port at the bottom of the inner wall cleaning sealing cavity (21) is connected with a water supply pump (1) through the total water supply control valve (11), and a water outlet at the bottom of the inner wall cleaning sealing cavity (21) is connected with the inner wall of a needle of the biochemical analyzer through the first tail end control valve (41); the bottom of the inner wall cleaning sealing cavity (21) is also provided with a first connecting port and a second connecting port, and the first connecting port is connected with a water supply port at the bottom of the outer wall cleaning sealing cavity (22) through the first connecting control valve (12); the second joint is connected with a water supply port at the bottom of the reaction cup water supply sealing cavity (23) through the second joint control valve (13);
the top of the outer wall cleaning sealing cavity (22) is connected with the second pressure sensor (52), and a water outlet at the bottom of the outer wall cleaning sealing cavity (22) is connected with a cleaning tank of the biochemical analyzer through the second tail end control valve (42);
the top of the reaction cup water supply sealing cavity (23) is connected with the third pressure sensor (53), and a water outlet at the bottom of the reaction cup water supply sealing cavity (23) is connected with a reaction cup water supply pipeline of the biochemical analyzer through the third tail end control valve (43).
3. A biochemical analyzer water supply according to claim 2, characterized in that the total water supply control valve (11) is a three-way control valve comprising three interfaces, inlet, outlet a and outlet B; the inlet connection outlet A or the inlet connection outlet B can be selectively controlled by controlling the total water supply control valve (11); an inlet of the total water supply control valve (11) is connected with a water outlet end of the water supply pump (1), an outlet A of the total water supply control valve (11) is connected with a water supply port at the bottom of the inner wall cleaning seal cavity (21), and an outlet B of the total water supply control valve (11) is connected back to the water supply tank through a pipeline.
4. A biochemical analyzer water supply according to claim 2, wherein the control valve is a solenoid valve, wherein the total water supply control valve (11) is a two-position three-way solenoid valve; the first connecting control valve (12), the second connecting control valve (13), the first tail end control valve (41), the second tail end control valve (42) and the third tail end control valve (43) are two-position two-way electromagnetic valves.
5. The water supply system of a biochemical analyzer according to claim 1, wherein the water outlet of the sealed cavity is branched into a plurality of water outlets by a pipeline, and the water outlets are controlled by a water outlet control valve or a plurality of water outlet control valves.
6. The water supply system of a biochemical analyzer according to claim 1, wherein the top of the sealed cavity is further provided with a pressurizing port, and the control valve further comprises a pressurizing control valve; the pressurization control valve is connected between the pressurization port and a compressed air source.
7. The water supply system of claim 1, wherein the sealed chamber has a water outlet higher than the water supply and drain.
8. A biochemical analyzer water supply according to any one of claims 1 to 7, further comprising a system control unit; the system control unit can collect data of the pressure sensor and control the water supply pump (1) and each control valve.
9. The water supply system of claim 8, wherein the system control unit is a remote terminal unit.
CN202311548474.5A 2023-11-20 2023-11-20 Biochemical analyzer water supply system Pending CN117587889A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311548474.5A CN117587889A (en) 2023-11-20 2023-11-20 Biochemical analyzer water supply system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311548474.5A CN117587889A (en) 2023-11-20 2023-11-20 Biochemical analyzer water supply system

Publications (1)

Publication Number Publication Date
CN117587889A true CN117587889A (en) 2024-02-23

Family

ID=89919367

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311548474.5A Pending CN117587889A (en) 2023-11-20 2023-11-20 Biochemical analyzer water supply system

Country Status (1)

Country Link
CN (1) CN117587889A (en)

Similar Documents

Publication Publication Date Title
EP0156074A2 (en) Positive displacement diaphragm pump employing displacer valves
CN106525358B (en) Valve pressure testing system and method
CN208653742U (en) It is a kind of sealing and the testing integrated machine of pulse
RU2361180C1 (en) Device for feeding and regulating flow of odorant (versions)
US3141475A (en) Regulating valve for a pump controlled by a pressure responsive switch
CN117587889A (en) Biochemical analyzer water supply system
CN213839571U (en) Differential pressure regulating valve
EP0459434A2 (en) Hydropneumatic constant pressure device for automatic control of the operation and stopping of electrical motorpumps
CN110007702B (en) High-pressure and automatic-control aviation fuel test bed oil supply system
CN210513586U (en) Upstream pumping seal test system
RU2636948C1 (en) Device for feeding, measuring, control quantity and flow rate of liquid
CN101566244B (en) Multi-passage circulating member of electromagnetic valve
CN213331555U (en) Pump filling system for centrifugal pump
CN212645966U (en) Gas circuit control structure for pressure tester
CN211525054U (en) Flow sensing device and hydroelectric pump
CN107860441B (en) Water flow sensor test board
CN219695030U (en) Constant-pressure oil storage device
CN206930415U (en) Valve pressure test equipment
CN2462437Y (en) Valve-less self-controlling liquid constant level device
CN210003228U (en) online full-automatic differential pressure detection system for drilling fluid
CN201187618Y (en) Electromagnetic valve multi-channel circulating component
CN109827767A (en) A kind of hydraulic valve automatic testing stand frame
CN117127564B (en) Pressure maintaining system for gate water seal
CN217341436U (en) Step air adjusting pipe and Ma's bottle
CN111828333B (en) Pump filling method for low-position water taking centrifugal pump

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