CN213398198U - Liquid storage tank, liquid path system and sample analyzer - Google Patents
Liquid storage tank, liquid path system and sample analyzer Download PDFInfo
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- CN213398198U CN213398198U CN202021576372.6U CN202021576372U CN213398198U CN 213398198 U CN213398198 U CN 213398198U CN 202021576372 U CN202021576372 U CN 202021576372U CN 213398198 U CN213398198 U CN 213398198U
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Abstract
The application relates to the technical field of medical equipment, specifically discloses a liquid storage pot, liquid way system and sample analysis appearance, and this liquid storage pot includes: the tank body is provided with a liquid outlet at the bottom; the cover body is positioned at the upper part of the tank body and is hermetically connected with the tank body, a liquid inlet, an air outlet and an air hole are arranged on the cover body, and an air valve is arranged on the air hole; the liquid inlet is used for being connected with a reagent tank, the air outlet is used for being connected with a negative pressure air source, the negative pressure air source is used for establishing working negative pressure in the liquid storage tank so that a reagent can enter the tank body through the liquid inlet, and the air valve is used for communicating the air hole with the atmosphere when the capacity of the reagent in the liquid storage tank is larger than or equal to first preset capacity so as to maintain the pressure equal to the atmospheric pressure in the liquid storage tank and enable the reagent to flow out of the tank body through the liquid inlet. By the mode, the phenomenon of empty suction of the syringe or the liquid taking needle can be effectively avoided.
Description
Technical Field
The application relates to the technical field of medical instruments, in particular to a liquid storage tank, a liquid path system and a sample analyzer.
Background
Biochemical analyzers have found widespread use in the field of medical device technology. A liquid storage tank is usually arranged in the biochemical analyzer, and working negative pressure needs to be established in the liquid storage tank to ensure that enough reagent is in the liquid storage tank.
During the long-term development process, the inventor of the present application finds that the biochemical analyzer in the prior art has the following disadvantages when in use: when a plurality of devices such as the cleaning of a stirring rod, the cleaning of a reagent needle, the liquid suction of a reagent injector, the liquid suction of a magnetic separation injector and the like are parallel, the negative pressure of a liquid storage tank influences the reagent injector and the magnetic separation injector to cause the empty suction phenomenon due to insufficient suction force, so that not only is the energy wasted, but also the biochemical analyzer is easy to damage due to the long-time empty suction.
SUMMERY OF THE UTILITY MODEL
The application provides a liquid storage pot, liquid way system and sample analysis appearance, can effectively avoid the emergence of syringe or liquid needle aspiration phenomenon.
In one aspect, the present application provides a fluid reservoir comprising: the tank body is provided with a liquid outlet at the bottom; the cover body is positioned at the upper part of the tank body and is hermetically connected with the tank body, a liquid inlet, an air outlet and an air hole are arranged on the cover body, and an air valve is arranged on the air hole; the liquid inlet is used for being connected with a reagent tank, the air outlet is used for being connected with a negative pressure air source, the negative pressure air source is used for establishing working negative pressure in the liquid storage tank so that a reagent can enter the tank body through the liquid inlet, and the air valve is used for communicating the air hole with the atmosphere when the capacity of the reagent in the liquid storage tank is larger than or equal to first preset capacity so as to maintain the pressure equal to the atmospheric pressure in the liquid storage tank and enable the reagent to flow out of the tank body through the liquid inlet.
In another aspect, the present application provides a fluid path system, comprising at least: the liquid storage tank as described above; the first interface of the negative pressure air source is connected with the air outlet; the cleaning pool is connected with a second interface of the negative pressure air source; the negative pressure air source is also used for sucking the reagent into the cleaning pool from the liquid storage tank when the volume of the reagent in the liquid storage tank is larger than or equal to a second preset volume.
In yet another aspect, the present application provides a sample analyzer, the apparatus comprising the aforementioned fluid path system, an optical detection assembly, and a control circuit.
The beneficial effect of this application is: be different from prior art's condition, the jar body of this application liquid storage pot is equipped with the inlet, be provided with the inlet on the lid, gas vent and gas pocket, negative pressure air supply is connected to the gas vent, negative pressure air supply is used for establishing work negative pressure in the liquid storage pot, so that reagent accessible inlet gets into jar internal, when the capacity of the reagent in the liquid storage pot is greater than or equal to first predetermined capacity, intercommunication gas pocket and atmosphere, with the inside pressure that equals with atmospheric pressure that maintains at the liquid storage pot, make the syringe or the liquid needle of inserting the inlet absorb the reagent in the liquid storage pot more easily, can effectively avoid the syringe or the emergence of liquid needle air suction phenomenon.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Wherein:
FIG. 1 is a schematic diagram illustrating the construction of one embodiment of a fluid reservoir of the present application;
FIG. 2 is a schematic diagram of a fluid circuit system according to an embodiment of the present application;
FIG. 3 is a schematic diagram of an embodiment of a sample analyzer according to the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The technical scheme adopted by the application is as follows: a fluid reservoir 11 is provided. Referring to fig. 1, the liquid storage tank 11 includes a tank 111 and a cover 112, wherein the cover 112 is disposed on the tank 111, and the cover 112 is hermetically connected to the tank 111. Wherein, the bottom of the tank 111 is provided with a liquid outlet 1111, and the cover 112 is provided with a liquid inlet 1121, an air outlet 1122 and an air hole 1123.
The liquid storage tank 11 of this application specifically is the buffer tank, and the liquid storage tank 11 is located between reagent pond 18 and a plurality of liquid way 15, 17 for pressure in the liquid way 15, 17 when balancing the perfusion alleviates the draft that negative pressure air supply 12 formed in liquid way 15, 17, avoids producing the microbubble in the reagent. The reagent reservoir 18 may be used to store reagents or wash solutions that participate in the processing of the sample.
Specifically, the can 111 may include an upper can 1112 and a lower can 1113, and the cover 112 may be disposed on the upper can 1112. The upper tank 1112 and the lower tank 1113 may be of unitary construction. In other embodiments, the tank 111 may be formed by detachably connecting an upper tank 1112 and a lower tank 1113, so as to facilitate detachment and cleaning of the inside of the tank 111, and a sealing member (not shown) is disposed at a joint of the upper tank 1112 and the lower tank 1113, so that sealing effect is good and leakage is avoided. The liquid outlet 1111 may be disposed on a circumferential wall of the lower tank 1113.
Preferably, the bottom of the tank 111 has a semicircular cross section, and the liquid outlet 1111 is disposed at a low-lying position of the bottom of the tank 111. Specifically, the cross-section of the lower tank 1113 is in the shape of a semi-circular arc, the arc top of the semi-circular arc is located at the bottom end of the tank 111, and the liquid outlet 1111 is arranged at the arc top of the semi-circular arc. Since the liquid outlet 1111 is disposed at a low-lying position and the liquid inlet 1121 is disposed at a position away from the low-lying position cover 112, the reagent can flow out from the liquid inlet 1121 more easily.
Wherein, the liquid inlet 1121 is used for connecting the reagent tank 18, and the gas outlet 1122 is used for connecting the negative pressure gas source 12. The negative pressure air source 12 is used to establish a working negative pressure in the liquid storage tank 11, so that the reagent can enter the tank 111 through the liquid inlet 1121.
The air hole 1123 is provided with an air valve 1124, and the air valve 1124 is used for communicating the atmosphere through the air hole 1123 when the volume of the reagent in the liquid storage tank 11 is greater than or equal to a first preset volume, that is, the liquid storage tank 11 and the atmosphere are communicated, so as to maintain the pressure equal to the atmospheric pressure inside the liquid storage tank 11, and the reagent can flow out of the tank 111 through the liquid inlet 1121.
Optionally, the gas valve 1124 is a normally closed solenoid valve or an electrically operated valve; when the volume of the reagent in the liquid storage tank 11 is smaller than the first preset volume, the air valve 1124 is closed; after the air valve 1124 is closed, the reagent in the reagent tank 18 rapidly enters the liquid storage tank 11 through the liquid inlet 1121, and when the volume of the reagent in the liquid storage tank 11 is greater than or equal to a first preset volume, the air valve 1124 is opened to communicate the liquid storage tank 11 with the atmosphere, so as to maintain the pressure inside the liquid storage tank 11 equal to the atmospheric pressure.
Preferably, when the volume of the reagent in the liquid storage tank 11 is greater than or equal to the first preset volume, the air valve 1124 is opened and the negative pressure air source 12 is closed, so that the reagent can rapidly flow out of the tank 111 through the liquid inlet 1121.
More preferably, the cover 112 is provided with an air inlet (not shown) for connecting a positive pressure air source (not shown), when the volume of the reagent in the liquid storage tank 11 is greater than or equal to a first preset volume, the negative pressure air source 12 is closed, and the positive pressure air source is opened, at this time, when the air intake volume of the liquid storage tank 11 is greater than or equal to the air outlet volume, a positive working pressure is established in the liquid storage tank 11, so that the reagent can more quickly flow out of the tank 111 through the liquid inlet 1121, and a syringe or a liquid needle connected to the liquid inlet 1121 more easily sucks the reagent in the liquid storage tank 11.
The first preset capacity may be the sum of the maximum liquid absorption amounts of the respective liquid paths 15 and 17 connected to the liquid storage tank 11 in one working cycle. The size of the first preset volume is set according to the size of the sample analyzer 100 or the user requirement, for example, the first preset volume is greater than or equal to 18 mL.
When the volume of the reagent in the liquid storage tank 11 is greater than or equal to the first predetermined volume, the air valve 1124 is opened to communicate the liquid storage tank 11 with the atmosphere, and at this time, when the air intake volume of the liquid storage tank 11 is greater than or equal to the air outlet volume, the interior of the liquid storage tank 11 is in a positive pressure state, so that the reagent can flow out of the tank 111 through the liquid inlet 1121, and the reagent in the liquid storage tank 11 can be more easily sucked by an injector or a liquid-taking needle connected to the liquid inlet 1121.
Different from the prior art, the liquid storage tank 11 of the present application has a liquid inlet 1121 on the tank body 111, a liquid inlet 1121, an air outlet 1122 and an air hole 1123 are disposed on the cover body 112, the air outlet 1122 is connected to the negative pressure air source 12, the negative pressure air source 12 is used for establishing a working negative pressure in the liquid storage tank 11, so that the reagent can enter the tank body 111 through the liquid inlet 1121, until the volume of the reagent in the liquid storage tank 11 is greater than or equal to a first preset volume, the liquid storage tank 11 and the atmosphere are communicated through the air hole 1123, so as to maintain a pressure equal to the atmospheric pressure in the liquid storage tank 11, so that the syringe or the liquid needle connected to the liquid inlet 1121 can more easily suck the reagent in the liquid storage tank 11, and the occurrence.
In one embodiment, the distance I between the gas port 1123 and the level of the reagent in the reservoir 111Is larger than the distance I between the liquid inlet 1121 and the liquid level of the reagent in the liquid storage tank 112Distance I between vent 1122 and the reagent level in reservoir 113. By the above manner, the reagent is effectively prevented from overflowing from the air hole 1123 when entering from the liquid inlet 1121 or being discharged from the air outlet 1122.
In one embodiment, the inner diameter of liquid inlet 1121 is larger than the inner diameters of liquid outlet 1111, gas outlet 1122 and gas hole 1123. It will be appreciated that the larger the inner diameter of liquid inlet 1121, the greater the pressure, and the easier the solvent will flow from liquid inlet 1121 to tank 11. Specifically, liquid inlet tube 1121 may have an inner diameter of 3.0 to 3.4mm (e.g., 3.0mm, 3.2mm, 3.4mm) and an outer diameter of 3.0 to 3.4 mm. The inner diameter of the liquid outlet 1111, the air outlet 1122 and the air hole 1123 may be 2.2-2.6mm (e.g., 2.2mm, 2.4mm, 2.6mm), and the outer diameter of the pipe may be 2.2-2.6 mm.
In an embodiment, the opening direction of the liquid inlet 1121 and the opening direction of the liquid outlet 1111 are parallel to each other, and the liquid inlet 1121 and the liquid outlet 1111 are disposed opposite to each other. The opening direction of the liquid outlet 1111 is parallel to the opening direction of the liquid inlet 1121, such that the liquid outlet 1111 is opposite to the liquid inlet 1121.
In particular, a liquid inlet1121 is disposed above the liquid outlet 1111. Calculated formula of buoyancy F-float ═ rhoSolvent(s)gVRow board(wherein ρSolvent(s): solvent density in kilograms per cubic meter; g: the ratio of gravity to mass, in newtons; vRow board: the volume of the discharged liquid is in unit of cubic meter), the bubbles entering from the liquid inlet 1121 are subjected to upward buoyancy F in the solvent, and the bubbles are always in a floating state in the liquid storage tank, so that the bubbles can be prevented from entering a liquid path along with the liquid outlet 1111.
The liquid storage tank 11 further includes: a filter screen 114. Filter screen 114 is disposed between liquid inlet 1121 and liquid outlet 1111. The filter mesh 114 has a pore size in the range of 5-200um, such as 5um, 50um, 100um, 150um, or 200 um. Because the aperture of the filter screen 114 is smaller than the diameter of the bubbles, the bubbles are isolated by the filter screen 114, and the bubbles are effectively prevented from entering the liquid path along with the liquid outlet 1111.
Another technical scheme adopted by the application is as follows: a fluid path system 10 is provided. Referring to fig. 2-3, the fluid path system 10 at least includes: the liquid storage tank 11, the negative pressure air source 12 and the cleaning tank 13 of the above embodiment. The negative pressure air source 12 in this application is further connected with the cleaning tank 13, and it is ensured that the redundant solvent in the whole liquid path system 10 is discharged into the cleaning tank 13.
The negative pressure air source 12 may be a liquid pump, the first interface of the negative pressure air source 12 is connected to the exhaust 1122, and the cleaning tank 13 is connected to the second interface of the negative pressure air source 12. Specifically, when the negative pressure air source 12 works, the negative pressure air source 12 pumps air out of the liquid storage tank 11, and a working negative pressure is formed in the liquid storage tank 11, so that the solvent in the reagent tank 18 can enter the liquid storage tank 11 through the liquid inlet 1121.
The negative pressure air source 12 is further configured to suck the reagent from the liquid storage tank 11 to the washing tank 13 when the volume of the reagent in the liquid storage tank 11 is greater than or equal to a second preset volume. When the volume of the reagent in the liquid reservoir tank 11 is equal to or larger than the second predetermined volume, the reagent surface is in contact with the exhaust port 1122 but not in contact with the air hole 1123. Optionally, the second predetermined volume is 2/3 of the total volume of the fluid reservoir tank 11. That is, the vent 1122 extends into the can 111, and when the can 111 is a cylinder, the length of the vent 1122 may be 1/3, which is the distance between the cover 112 and the bottom end of the can 111, and when the volume of reagent in the reservoir 11 reaches 2/3 of the total volume of the reservoir 11, the vent 1122 is just in contact with the reagent level.
Preferably, the liquid storage tank 11 is further provided with a liquid level detection device (not shown), and the liquid level detection device, the negative pressure air source 12 and the air valve 1124 are respectively electrically connected to the control circuit 30, and the liquid level detection device is used for detecting the volume of the reagent in the liquid storage tank 11. When the liquid level detection device detects that the volume of the reagent in the liquid storage tank 11 is smaller than the first preset volume, the control circuit 30 controls the air valve 1124 to close, and controls the negative pressure air source 12 to work, so as to replenish the reagent in the liquid storage tank 11. When the liquid level detection device detects that the volume of the reagent in the liquid storage tank 11 is greater than or equal to the first preset volume, the control circuit 30 controls the air valve 1124 to open, and controls the negative pressure air source 12 to stop working, so that the reagent enters the liquid path from the liquid outlet 1111. When the liquid level detection device detects that the volume of the reagent in the liquid storage tank 11 is greater than or equal to a second preset volume, the control circuit 30 controls the air valve 1124 to open and controls the negative pressure air source 12 to work so as to suck the reagent from the liquid storage tank 11 to the cleaning tank 13.
In one embodiment, the distance between the first port of the negative pressure air source 12 and the inner surface of the fluid reservoir 11 is greater than or equal to a predetermined distance.
Further, the fluid path system 10 further includes: a first valve 14 and a first fluid path 15. The first liquid path 15 is used for sucking the reagent in the liquid storage tank 11 through the liquid outlet 1111 and discharging the reagent to a reaction cup (not shown) for adding the reagent to the reaction cup. The first port of the first valve 14 is connected to the liquid outlet 1111. The first fluid path 15 includes a first syringe 151 and a first electromagnetic valve 152, the first electromagnetic valve 152 is electrically connected to the control circuit 30, a first port of the first electromagnetic valve 152 is connected to a second port of the first valve 14, a second port of the first electromagnetic valve 152 is connected to the first syringe 151, and when the first syringe 151 needs to suck the reagent in the fluid reservoir 11, the control circuit 30 controls the first electromagnetic valve 152 to be powered on.
Specifically, the control circuit 30 controls the first solenoid valve 152 to be powered on, the first syringe 151 is communicated with the liquid storage tank 11, and a certain amount of solvent is sucked from the liquid storage tank 11 under the driving of a motor (not shown) of the first syringe 151. When the first injector 151 needs to send the absorbed solvent into the reaction tank, the control circuit 30 controls the first electromagnetic valve 152 to be powered off, at this time, the first injector 151 is communicated with the reaction tank, and the first injector 151 injects the absorbed solvent into the reaction tank under the driving of the motor. In the present embodiment, the first solenoid valve 152 may be a two-way solenoid valve or a three-way solenoid valve. Preferably, the first solenoid valve 152 is a two-way solenoid valve. The first syringe 151 may be any one of a reagent syringe, a magnetic wash syringe, and a plunger pump syringe. The plunger pump is used as an input power source of the cleaning liquid, the cleaning liquid injected into the reaction cup can be accurately controlled, and meanwhile, the plunger pump is small in size and beneficial to realizing modular management of instruments.
Further, the fluid path system 10 further includes: a second valve 16 and a second fluid passage 17. The first port of the second valve 16 is connected to the third port of the first valve 14, i.e. the first valve 14 is a three-way valve. The second liquid path 17 includes a second syringe 171 and a second electromagnetic valve 172, the second electromagnetic valve 172 is electrically connected to the control circuit 30, a first port of the second electromagnetic valve 172 is connected to a second port of the second valve 16, a second port of the second electromagnetic valve 172 is connected to the second syringe 171, and when the second syringe 171 needs to aspirate a reagent in the reservoir 11, the control circuit 30 controls the second electromagnetic valve 172 to be powered on.
The control circuit 30 controls the second solenoid valve 172 to be powered on, the second syringe 171 is communicated with the liquid storage tank 11, and a certain amount of solvent is sucked from the liquid storage tank 11 under the driving of a motor (not shown) of the second syringe 171. When the second injector 171 needs to send the absorbed solvent into the reaction tank, the control circuit 30 controls the second electromagnetic valve 172 to be powered off, at this time, the second injector 171 is communicated with the reaction tank, and the second injector 171 is driven by the motor to inject the absorbed solvent into the reaction tank. In this embodiment, the second solenoid valve 172 may be a two-way solenoid valve or a three-way solenoid valve. Preferably, the second solenoid valve 172 is a two-way solenoid valve. The second syringe 171 may be any one of a reagent syringe, a magnetic wash syringe, and a plunger pump syringe.
Further, the fluid path system 10 may further include: a third valve (not shown) and a third fluid path (not shown). The first interface of the third valve is connected with the third interface of the second valve, namely the second valve is a three-way valve. The third fluid path comprises a third injector and a third electromagnetic valve, the third electromagnetic valve is electrically connected with the control circuit 30, a first interface of the third electromagnetic valve is connected with a second interface of the third valve, a second interface of the third electromagnetic valve is connected with the third injector, and when the third injector needs to suck the reagent in the liquid storage tank 11, the control circuit 30 controls the third electromagnetic valve to be electrified. The third syringe may be any one of a reagent syringe, a magnetic wash syringe, and a plunger pump syringe.
The application adopts another technical scheme that: a sample analyzer 100 is provided. Referring to fig. 3, the sample analyzer 100 includes the liquid path system 10, the optical detection assembly 20 and the control circuit 30 of the above embodiment, and the control circuit 30 is electrically connected to the liquid path system 10 and the optical detection assembly 20. In this embodiment, the optical detection assembly 20 includes a laser emitting device (not shown) and a light beam collecting device (not shown), the laser emitting device emits laser light to the sample to be detected wrapped by the sheath fluid at the top opening of the sheath fluid flowing tube, and the light beam collecting device collects intensities of scattered light and fluorescence emitted by the sample to be detected under the irradiation of the laser light, so as to further determine the classification and number of the sample to be detected.
It should be noted that sample analyzer 100 of the present application may include two independent sets of fluid path systems 10, two sets of fluid path systems are the fluid path system of sheath fluid and the fluid path system of washing liquid respectively, the liquid storage tank of the fluid path system of sheath fluid is used for caching the sheath fluid after the sheath flow counts, the liquid storage tank of the fluid path system of washing liquid is used for caching the washing liquid, the liquid storage tank of the fluid path system of sheath fluid and the liquid storage tank of the fluid path system of washing liquid set up side by side, can make the structure of sample analyzer more compact, be favorable to the miniaturization of sample analyzer.
The liquid storage tank 11 comprises a tank body 111 provided with a liquid inlet 1121, a cover body 112 provided with a liquid inlet 1121, an exhaust port 1122 and an air hole 1123, the exhaust port 1122 is connected with a negative pressure air source 12, the negative pressure air source 12 is used for establishing working negative pressure in the liquid storage tank 11 so that a reagent can enter the tank body 111 through the liquid inlet 1121, until the volume of the reagent in the liquid storage tank 11 is greater than or equal to a first preset volume, the liquid storage tank 11 and the atmosphere are communicated through the air hole 1123 so as to maintain the pressure equal to the atmospheric pressure in the liquid storage tank 11, so that a syringe or a liquid taking needle connected to the liquid inlet 1121 can more easily suck the reagent in the liquid storage tank 11, and the phenomenon of empty suction of the.
In this application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "connected" and "communicating" are used broadly and may be, for example, directly connected or indirectly connected through intervening media. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In the description of the present application, it is to be understood that the terms "upper", "lower", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or unit must have a specific direction, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present application.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A fluid reservoir, comprising:
the bottom of the tank body is provided with a liquid outlet;
the cover body is positioned at the upper part of the tank body and is in sealed connection with the tank body, a liquid inlet, an air outlet and an air hole are formed in the cover body, and an air valve is arranged on the air hole;
the liquid inlet is used for being connected with a reagent pool, the air outlet is used for being connected with a negative pressure air source, the negative pressure air source is used for establishing working negative pressure in the liquid storage tank so that a reagent can enter the tank body through the liquid inlet, and the air valve is used for communicating the air hole with the atmosphere when the volume of the reagent in the liquid storage tank is larger than or equal to a first preset volume so as to maintain the pressure equal to the atmospheric pressure in the liquid storage tank, so that the reagent can flow out of the tank body through the liquid outlet.
2. The fluid reservoir of claim 1,
the cross-section of the bottom of the tank body is in a semi-circular arc shape, and the liquid outlet is arranged at the bottom of the tank body.
3. The fluid reservoir of claim 1,
the distance between the air hole and the liquid level of the reagent in the liquid storage tank is larger than the distance between the liquid inlet and the air outlet and the liquid level of the reagent in the liquid storage tank.
4. The fluid reservoir of claim 1,
the inner diameter of the liquid inlet is larger than the inner diameters of the liquid outlet, the air outlet and the air hole.
5. The fluid reservoir of claim 1,
the opening direction of the liquid inlet is parallel to that of the liquid outlet, and the liquid inlet and the liquid outlet are arranged oppositely;
the liquid storage pot still includes:
the filter screen, the filter screen sets up the inlet with between the liquid outlet.
6. A fluid path system, comprising at least:
the fluid reservoir tank as set forth in any one of claims 1-5;
the first interface of the negative pressure air source is connected with the air outlet;
the cleaning pool is connected with the second interface of the negative pressure air source;
the negative pressure air source is also used for sucking the reagent from the liquid storage tank to the cleaning pool when the volume of the reagent in the liquid storage tank is larger than or equal to a second preset volume.
7. The fluid path system of claim 6,
the distance between the first interface of the negative pressure air source and the plane in the liquid storage tank is greater than or equal to a preset distance.
8. The fluid path system of claim 6, further comprising:
the first interface of the first valve is connected with the liquid outlet;
the first liquid path comprises a first injector and a first electromagnetic valve, the first electromagnetic valve is electrically connected with the control circuit, a first interface of the first electromagnetic valve is connected with a second interface of the first valve, a second interface of the first electromagnetic valve is connected with the first injector, and when the first injector needs to suck the reagent in the liquid storage tank, the control circuit controls the first electromagnetic valve to be electrified.
9. The fluid path system of claim 8, further comprising:
the first interface of the second valve is connected with the third interface of the first valve;
and the second liquid path comprises a second injector and a second electromagnetic valve, the second electromagnetic valve is electrically connected with the control circuit, a first interface of the second electromagnetic valve is connected with a second interface of the second valve, a second interface of the second electromagnetic valve is connected with the second injector, and when the second injector needs to suck the reagent in the liquid storage tank, the control circuit controls the second electromagnetic valve to be electrified.
10. A sample analyzer comprising the fluid path system of any one of claims 6-9, an optical detection assembly, and a control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021576372.6U CN213398198U (en) | 2020-07-31 | 2020-07-31 | Liquid storage tank, liquid path system and sample analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021576372.6U CN213398198U (en) | 2020-07-31 | 2020-07-31 | Liquid storage tank, liquid path system and sample analyzer |
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| Publication Number | Publication Date |
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| CN213398198U true CN213398198U (en) | 2021-06-08 |
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| CN202021576372.6U Active CN213398198U (en) | 2020-07-31 | 2020-07-31 | Liquid storage tank, liquid path system and sample analyzer |
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