CN213482031U - Reaction mechanism for dry chemical analysis apparatus - Google Patents
Reaction mechanism for dry chemical analysis apparatus Download PDFInfo
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- CN213482031U CN213482031U CN202021181485.6U CN202021181485U CN213482031U CN 213482031 U CN213482031 U CN 213482031U CN 202021181485 U CN202021181485 U CN 202021181485U CN 213482031 U CN213482031 U CN 213482031U
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Abstract
The utility model discloses a reaction mechanism for dry chemical analysis equipment, which comprises a bottom plate, a test paper input seat, a test paper heating component and a test paper conveying component, wherein the test paper input seat, the test paper heating component and the test paper conveying component are arranged on the bottom plate; the test paper heating assembly comprises a heating base, a heating element arranged at the bottom of the heating base and an upper cover arranged at the upper part of the heating base, a heating cavity for containing and heating test paper strips is formed between the upper cover and the heating base, and a test paper strip inlet and a test paper strip outlet are formed at two ends of the heating cavity respectively; an outlet heat-preservation cover is rotatably arranged on the test strip outlet. The reaction mechanism for the dry chemical analysis equipment of the utility model can realize the transportation of the test paper strip on different positions only by using one set of driving mechanism, has simple structure and can meet the detection requirements of dry chemical analysis; the utility model discloses a set up mechanisms such as export heat preservation lid, entry heat preservation subassembly and can carry out fine heat preservation to test paper heating element, can reduce the waste of energy.
Description
Technical Field
The utility model relates to an in vitro diagnostic equipment field, in particular to a reaction mechanism for dry-type chemical analysis equipment.
Background
A dry chemical analyzer is an analyzer for clinical chemical examination using a solid-phase carrier reagent (e.g., a test strip), and quantitatively measures the concentration or activity of a specific component in a sample by a reflection photometry (a method of irradiating a sample with light and detecting the reflected light of the sample by a light-sensitive sensor to obtain a detection result), a differential potential method, or the like. In the dry chemical analyzer, the test strip needs to be subjected to different operations at different positions, such as sample adding, heating, discarding and the like, the test strip heating needs to be realized by adopting a heating component, and the test strip conveying needs to be realized by adopting a special test strip conveying mechanism, such as firstly moving the test strip to the sample adding position, then conveying the test strip to the incubation reaction position, and finally conveying the test strip to the discarding position. However, the heating assembly in the existing dry chemical analyzer is easy to cause heat waste due to the lack of a heat preservation mechanism, and the test strip conveying mechanism therein often has the defect of complex structure. For example, patent 201520792439.2 discloses a dry chemical analyzer in which a test strip transport mechanism includes a front and a rear set of test strip conveyors, resulting in a complicated overall structure.
Therefore, a more reliable solution is now needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to the not enough among the above-mentioned prior art, provide a reaction mechanism for dry-type chemical analysis equipment.
In order to solve the technical problem, the utility model discloses a technical scheme is: a reaction mechanism for a dry chemical analysis device comprises a bottom plate, a test paper input seat, a test paper heating assembly and a test paper conveying assembly, wherein the test paper input seat, the test paper heating assembly and the test paper conveying assembly are arranged on the bottom plate;
the test paper heating assembly comprises a heating base, a heating element arranged at the bottom of the heating base and an upper cover arranged at the upper part of the heating base, a heating cavity for containing and heating test paper strips is formed between the upper cover and the heating base, and a test paper strip inlet and a test paper strip outlet are formed at two ends of the heating cavity respectively; an outlet heat-insulating cover is rotatably arranged on the test strip outlet;
the test paper conveying component can push the test paper strip inserted by the test paper input seat into the heating cavity through the test paper strip inlet along the X direction, and push the test paper strip in the heating cavity out of the heating cavity through the test paper strip outlet along the X direction.
Preferably, both sides of the upper end of the outlet heat-insulating cover are rotatably connected with the upper cover;
and a magnet piece is arranged on the side surface of the heating base below the test strip outlet, and an iron piece which can be attracted with the magnet piece is arranged below the inner side of the upper cover.
And the bottom plate is provided with a waste outlet positioned at the side part of the test strip outlet.
Preferably, the test paper conveying assembly comprises a slide rail fixedly connected to the bottom plate, a push block slidably arranged in a slide way formed in the middle of the slide rail, and a driving mechanism for driving the push block to move.
Preferably, a transmission groove is formed in the middle of the push block along the X direction, and a rack surface is arranged on one inner side surface of the transmission groove along the X direction;
the driving mechanism comprises a motor and a driving gear fixedly connected with an output shaft of the motor, a driving hole is formed in the bottom plate, and the driving gear penetrates through the driving hole to be meshed with the rack surface.
Preferably, the push block is further provided with an optical coupler baffle, and the bottom plate is provided with a plurality of groove-shaped optical couplers at intervals along the X direction.
Preferably, the bottom of the heating base is provided with a first light hole.
Preferably, a test paper input channel communicated to the slideway is formed in the test paper input seat along the Y direction.
Preferably, an inlet heat-insulating assembly is further arranged on the side of the test paper strip inlet of the heating cavity, and the inlet heat-insulating assembly comprises a plurality of telescopic rods fixedly connected to the bottom plate and a wedge-shaped heat-insulating block connected to the upper ends of the telescopic rods;
the first end of the push block is further connected with a test paper slide, and a second light hole is formed in the test paper slide.
Preferably, the telescopic rod comprises an outer sleeve rod fixedly connected to the bottom plate, an inner slide rod slidably inserted into the insertion hole of the outer sleeve rod, and a pressure spring connected between the bottom of the inner slide rod and the inner wall of the bottom of the insertion hole;
the wedge-shaped heat preservation block is provided with an inclined guide surface, and the side part of the wedge-shaped heat preservation block is provided with a heat preservation sheet which can completely cover the test strip inlet of the heating cavity;
the bottom surface of the test paper slide is provided with an inclined driving surface matched with the inclined guide surface, and when the push block moves along the X direction, the inclined driving surface presses the inclined guide surface to enable the wedge-shaped heat preservation block to move downwards along the Z direction.
The utility model has the advantages that: the reaction mechanism for the dry chemical analysis equipment of the utility model can realize the transportation of the test paper strip on different positions only by using one set of driving mechanism, has simple structure and can meet the detection requirements of dry chemical analysis; the utility model discloses a set up mechanisms such as export heat preservation lid, entry heat preservation subassembly and can carry out fine heat preservation to test paper heating element, can reduce the waste of energy.
Drawings
Fig. 1 is a schematic structural view of a reaction mechanism for a dry chemical analysis apparatus according to example 1 of the present invention;
FIG. 2 is a schematic structural view of a reaction mechanism for a dry chemical analyzer according to example 1 of the present invention, with an upper cover removed;
fig. 3 is a schematic structural view of the driving mechanism and the push block in accordance with embodiment 1 of the present invention;
fig. 4 is a schematic structural view of a test paper heating assembly in example 1 of the present invention;
fig. 5 is a schematic structural diagram of another view angle of the test paper heating assembly in example 1 of the present invention;
fig. 6 is a schematic structural view of the test paper heating assembly according to embodiment 1 of the present invention after the heat-insulating cover is removed;
FIG. 7 is a schematic view of the present invention applied to a dry chemical analyzer;
fig. 8 is a schematic structural view of the driving mechanism and the push block according to embodiment 2 of the present invention;
fig. 9 is a schematic structural view of a test paper heating assembly and an inlet heat-insulating assembly in example 2 of the present invention;
fig. 10 is a schematic structural view of an inlet insulation assembly according to embodiment 2 of the present invention;
fig. 11 is a schematic view of a state in which the push block and the wedge-shaped heat-insulating block are not in contact with each other in embodiment 2 of the present invention;
fig. 12 is a schematic view of a state in which a push block is in contact with a wedge-shaped heat-insulating block in embodiment 2 of the present invention.
Description of reference numerals:
1-a bottom plate; 10-a waste outlet; 11-a slot type optical coupler; 110-a first slot type optocoupler; 111-a second slot type optocoupler; 112-third slot type optical coupler; 113-a fourth slot type optocoupler;
2, a test paper input seat; 20, a test paper input channel;
3, a test paper heating component; 30-heating the base; 31-a heating element; 32, an upper cover; 33-heating chamber; 34-test strip inlet; 35-test strip outlet; 36-outlet heat preservation cover; 37-magnet pieces; 38 — first light hole;
4, a test paper conveying component; 40, a slide rail; 41-a slideway; 42-a push block; 43-a drive mechanism; 44-a transmission groove; 45-rack face; 46-a drive aperture; 47-optical coupling baffle; 48-test paper slide; 420-a first end of the push block; 430-motor; 431-a drive gear; 480-a second light hole; 481 — inclined drive faces;
5-inlet heat preservation component; 50, a telescopic rod; 51-a wedge-shaped heat preservation block; 52-an outer loop bar; 53-plug hole; 54-inner sliding rod; 55, a pressure spring; 56-inclined guide surface; 57-heat preservation sheet.
Detailed Description
The present invention is further described in detail below with reference to examples so that those skilled in the art can implement the invention with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
As shown in fig. 1-2, the reaction mechanism for a dry chemical analysis apparatus of the present embodiment includes a base plate 1, and a test paper input seat 2, a test paper heating assembly 3, and a test paper conveying assembly 4 disposed on the base plate 1;
the test paper heating assembly 3 comprises a heating base 30, a heating element 31 arranged at the bottom of the heating base 30 and an upper cover 32 arranged at the upper part of the heating base 30, wherein a heating cavity 33 for containing and heating the test paper is formed between the upper cover 32 and the heating base 30, and a test paper inlet 34 and a test paper outlet 35 are respectively formed at two ends of the heating cavity 33; an outlet heat-insulating cover 36 is rotatably arranged on the test strip outlet 35; when the test paper is sent into the heating cavity 33 for heating, the outlet heat-preservation cover 36 covers the test paper outlet 35 to preserve heat of the heating cavity 33, and heat loss is reduced. The upper cover 32 is made of a material with good thermal insulation performance or coated with a thermal insulation layer (such as thermal insulation cotton), and the heating base 30 is made of a material with good thermal conductivity, so that the heat of the heating element 31 can be transferred into the heating cavity 33. In a preferred embodiment, the heating element 31 is a peltier or electric heating plate.
The test strip delivery assembly 4 can push the test strip inserted from the test strip input seat 2 into the heating cavity 33 through the test strip inlet 34 along the direction X, and push the test strip in the heating cavity 33 out of the heating cavity 33 through the test strip outlet 35 along the direction X.
The bottom plate 1 is provided with a waste outlet 2 positioned at the side part of the test strip outlet 35. The bottom of the heating base 30 is provided with a first light hole 38 for the optical detection mechanism to detect the test strip on the heating base 30. The test paper input seat 2 is provided with a test paper input channel 20 communicated to the slideway 41 along the Y direction. The test strip may be inserted through the test strip input channel 20.
The utility model discloses a mechanism mainly can be applied to dry-type chemical analysis equipment, provides the transport of test paper strip and the heating (carrying out incubation reaction) function of test paper strip. The test strip of the incubation reaction can obtain an analysis result through optical detection. For example, referring to fig. 7, in order to apply the mechanism of the present invention to an embodiment of a dry chemical analyzer, the mechanism further includes an optical detection mechanism and a waste box, the waste box is located below the waste outlet 2, the test strip completing the incubation reaction in the test strip heating assembly 3 can be optically detected by the optical detection mechanism below, so as to obtain the analysis result, and the test strip completing the detection is then pushed out of the heating cavity 33 and discarded to the waste box for collection.
The foregoing is a general idea of the present invention, and more specific embodiments are provided below to further explain the present invention.
Example 1
Referring to fig. 1-6, as a further preferred mode, in the present embodiment, both sides of the upper end of the outlet thermal cover 36 are rotatably connected to the upper cover 32; a magnet piece 37 is arranged on the side surface of the heating base 30 which is positioned below the test paper strip outlet 35, and an iron piece which can be attracted with the magnet piece 37 is arranged below the inner side of the upper cover 32. When the outlet heat preservation cover 36 covers the test paper strip outlet 35, the iron sheet and the magnet sheet 37 are attracted, so that the sealing and heat preservation effects of the outlet heat preservation cover 36 can be improved.
The test paper conveying assembly 4 comprises a slide rail 40 fixedly connected to the bottom plate 1, a push block 42 slidably arranged in a slide rail 41 arranged in the middle of the slide rail 40, and a driving mechanism 43 for driving the push block 42 to move. A transmission groove 44 is formed in the middle of the push block 42 along the X direction, and a rack surface 45 is arranged on one inner side surface of the transmission groove 44 along the X direction; the driving mechanism 43 comprises a motor 430 and a driving gear 431 fixedly connected with an output shaft of the motor 430, a driving hole 46 is formed on the bottom plate 1, and the driving gear 431 penetrates through the driving hole 46 to be meshed with the rack face 45.
The working principle of the test paper conveying component 4 is as follows: the motor 430 drives the gear to rotate, and the gear is engaged with the rack face 45 in the middle of the push block 42, so as to drive the push block 42 to move left and right, for example, referring to fig. 1 and 2, when the push block 42 is driven to move right, the right end face of the push block 42 moves to the left end of the test paper input track conduction, and is a feeding position, and the test paper is inserted at this time; the pusher 42 can then push the test strip to the sample loading position, the heating cavity 33, and push the test strip out of the heating cavity 33 in order to discard the test strip. Thereby can realize the purpose with test paper strip propelling movement to different positions through a motor 430, and the mechanism is simple, and is small, easily control. When the push block 42 pushes the test strip out of the heating cavity 33, the heat-insulating cover is forced to rotate, so that the test strip outlet 35 is opened, and the test strip can be pushed out smoothly.
Further preferably, the push block 42 is further provided with an optical coupler baffle 47, and the bottom plate 1 is provided with a plurality of groove-shaped optical couplers 11 at intervals along the X direction. The optical coupler baffle 47 is matched with the groove-shaped optical coupler 11 to realize the positioning of different positions. For example, referring to fig. 2, in this embodiment, 4 slot type optical couplers 11 are included, namely a first slot type optical coupler 110, a second slot type optical coupler 111, a third slot type optical coupler 112 and a fourth slot type optical coupler 113. When the optical coupler baffle 47 is positioned at the first groove-shaped optical coupler 110, the push block 42 is positioned at the left end position of the test paper input track, and the test paper can be pushed into the right end of the push block 42 through the test paper input track; when the optical coupler baffle 47 is positioned at the second groove-shaped optical coupler 111, the test strip is pushed to the sample adding position by the push block 42, and a sample can be manually added to the test strip; when the light coupling baffle plate 47 is positioned at the third groove type light coupling 112, the push block 42 pushes the test strip into the heating cavity 33 to perform an incubation reaction; when the optical coupler baffle 47 is located at the fourth slot type optical coupler 113, the push block 42 pushes the test strip to the right out of the heating cavity 33, and the test strip is discarded.
Example 2
Referring to fig. 8 to 12, in a further preferred embodiment based on embodiment 1, in this embodiment, an inlet heat-insulating assembly 5 is further disposed on a side portion of the test strip inlet 34 of the heating cavity 33, the inlet heat-insulating assembly 5 includes a plurality of telescopic rods 50 fixedly connected to the bottom plate 1 and a wedge-shaped heat-insulating block 51 connected to an upper end of the telescopic rods 50, a test strip carrier 48 is further connected to a first end 420 of the push block, the test strip carrier 48 is used for carrying a test strip, and a second light-transmitting hole 480 is formed in the test strip carrier 48. The test paper is inserted into the test paper slide 48 through the test paper input channel 20, and the push block 42 drives the test paper slide 48 to move, so that the test paper is conveyed. When the test paper slide 48 conveys the test paper to the heating cavity 33, the first light-transmitting hole 38 and the second light-transmitting hole 480 are communicated, so that light emitted by the optical detection mechanism below can irradiate the test paper for optical detection.
Since it is usually necessary to perform a plurality of sets of tests continuously, i.e. to perform the tests by using a plurality of test strips continuously, the heating element 31 is continuously operated during this period to maintain the desired temperature in the heating cavity 33, so as to improve the testing efficiency (for example, if the heating element 31 is stopped after each set of tests, the heating is stopped during the next set of tests, and the heating time to the desired temperature is wasted). If the test strip inlet 34 of the heating chamber 33 is always kept open, or a large amount of heat is lost, in this embodiment, the inlet heat-preserving component 5 functions as: before the test strip enters the heating cavity 33 (the conveying stage), the test strip inlet 34 is kept sealed and insulated, so that the heat loss is reduced.
The telescopic rod 50 comprises an outer sleeve rod 52 fixedly connected on the base plate 1, an inner slide rod 54 slidably inserted in the insertion hole 53 of the outer sleeve rod 52 and a pressure spring 55 connected between the bottom of the inner slide rod 54 and the inner wall of the bottom of the insertion hole 53; the wedge-shaped heat preservation block 51 is provided with an inclined guide surface 56, and the side part of the wedge-shaped heat preservation block 51 is provided with a heat preservation sheet 57 which can completely cover the test paper strip inlet 34 of the heating cavity 33;
referring to fig. 10 and 11, when no pressure is applied to the wedge-shaped heat preservation block 51, under the action of the elastic force of the pressure spring 55, the inner slide rod 54 supports the wedge-shaped heat preservation block 51 upwards, and at this time, the heat preservation sheet 57 can completely cover the test paper strip inlet 34 of the heating cavity 33, so that heat preservation can be performed on the heating cavity 33, and heat loss in the heating cavity 33 can be prevented.
Referring to fig. 12, the bottom surface of the test paper slide 48 is provided with an inclined driving surface 481 for engaging with the inclined guiding surface 56, and when the test paper slide 48 at the front end of the push block 42 moves forward in the X direction, the wedge-shaped holding block 51 moves downward in the Z direction by pressing the inclined guiding surface 56 by the inclined driving surface 481, so that the test paper slide 48 can smoothly enter the heating cavity 33.
In this embodiment, the working principle of the mechanism is as follows:
firstly, it should be understood that, because multiple groups of continuous detection are performed, the heating element 31 continuously works, the heating cavity 33 is always kept in a required temperature range, at this time, the wedge-shaped heat preservation block 51 is not pressurized, the heat preservation sheet 57 completely covers the test strip inlet 34, and the outlet heat preservation cover 36 also covers the test strip outlet 35 under the action of gravity, so that the heating cavity 33 is well preserved in heat;
step 1) the motor 430 works, the push block 42 is reset, the test paper slide 48 is positioned right behind the test paper input channel 20, the test paper is inserted into the test paper slide 48 through the test paper input channel 20, and at the moment, the optical coupler baffle 47 is positioned at the first groove type optical coupler 110;
step 2), the push block 42 moves rightwards, the test paper slide 48 reaches the sample adding position, a sample can be manually added to the test paper strip on the test paper slide 48, and referring to fig. 11, at this time, the optical coupler baffle 47 is positioned at the second groove type optical coupler 111;
step 3), the push block 42 continues to move rightwards, the test paper slide 48 is in contact with the wedge-shaped heat-insulating block 51, so that the wedge-shaped heat-insulating block 51 moves downwards, the test paper strip inlet 34 is opened, the test paper strip is sent into the heating cavity 33 by the test paper slide 48, and an incubation reaction is carried out, referring to fig. 12; at this time, the optical coupler baffle 47 is located at the third slot type optical coupler 112;
step 4), the push block 42 continues to move rightwards, the wedge-shaped heat preservation block 51 is extruded to be always positioned below the push block 42, the test paper slide 48 pushes the heat preservation cover, the heat preservation cover rotates under stress, the test paper strip outlet 35 is opened, the test paper strip is smoothly pushed out of the heating cavity 33, and then the test paper strip on the test paper slide 48 is manually pulled down and discarded; at this time, the light coupling baffle 47 is at the fourth groove type light coupling 113. The pusher block 42 is then reset for the next set of tests.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
While the embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields where the invention is suitable, and further modifications may readily be made by those skilled in the art, and the invention is therefore not limited to the specific details without departing from the general concept defined by the claims and the scope of equivalents.
Claims (10)
1. A reaction mechanism for dry chemical analysis equipment is characterized by comprising a bottom plate, a test paper input seat, a test paper heating assembly and a test paper conveying assembly, wherein the test paper input seat, the test paper heating assembly and the test paper conveying assembly are arranged on the bottom plate;
the test paper heating assembly comprises a heating base, a heating element arranged at the bottom of the heating base and an upper cover arranged at the upper part of the heating base, a heating cavity for containing and heating test paper strips is formed between the upper cover and the heating base, and a test paper strip inlet and a test paper strip outlet are formed at two ends of the heating cavity respectively; an outlet heat-insulating cover is rotatably arranged on the test strip outlet;
the test paper conveying component can push the test paper strip inserted by the test paper input seat into the heating cavity through the test paper strip inlet along the X direction, and push the test paper strip in the heating cavity out of the heating cavity through the test paper strip outlet along the X direction.
2. The reaction mechanism for a dry-type chemical analysis apparatus according to claim 1, wherein both sides of the upper end of the outlet heat-retaining cover are rotatably connected to the upper cover;
and a magnet piece is arranged on the side surface of the heating base below the test strip outlet, and an iron piece which can be attracted with the magnet piece is arranged below the inner side of the upper cover.
3. The reaction mechanism for a dry-type chemical analysis apparatus according to claim 1, wherein the bottom plate has a waste outlet formed therein and located at a side of the strip outlet.
4. The reaction mechanism of claim 1, wherein the test paper feeding assembly comprises a slide rail fixed to the bottom plate, a pushing block slidably disposed in a slide way formed in the middle of the slide rail, and a driving mechanism for driving the pushing block to move.
5. The reaction mechanism of claim 4, wherein a transmission groove is formed in the middle of the pushing block along the X direction, and a rack surface is formed on one inner side surface of the transmission groove along the X direction;
the driving mechanism comprises a motor and a driving gear fixedly connected with an output shaft of the motor, a driving hole is formed in the bottom plate, and the driving gear penetrates through the driving hole to be meshed with the rack surface.
6. The reaction mechanism of claim 5, wherein the pushing block further comprises an optical coupler baffle, and the bottom plate further comprises a plurality of groove-shaped optical couplers spaced along the X-direction.
7. The reaction mechanism of claim 1, wherein the heating base has a first light hole at a bottom thereof.
8. The reaction mechanism according to claim 4, wherein the strip input seat is provided with a strip input channel in the Y direction, the strip input channel being connected to the slide.
9. The reaction mechanism for a dry-type chemical analysis apparatus according to claim 2, wherein an inlet heat-insulating assembly is further disposed at a side of the test strip inlet of the heating chamber, and the inlet heat-insulating assembly comprises a plurality of telescopic rods fixedly connected to the bottom plate and a wedge-shaped heat-insulating block connected to upper ends of the telescopic rods;
the first end of the push block is further connected with a test paper slide, and a second light hole is formed in the test paper slide.
10. The reaction mechanism for a dry-type chemical analysis apparatus according to claim 9, wherein the telescopic rod comprises an outer rod fixedly attached to the base plate, an inner rod slidably inserted into the insertion hole of the outer rod, and a compression spring connected between the bottom of the inner rod and the bottom inner wall of the insertion hole;
the wedge-shaped heat preservation block is provided with an inclined guide surface, and the side part of the wedge-shaped heat preservation block is provided with a heat preservation sheet which can completely cover the test strip inlet of the heating cavity;
the bottom surface of the test paper slide is provided with an inclined driving surface matched with the inclined guide surface, and when the push block moves along the X direction, the inclined driving surface presses the inclined guide surface to enable the wedge-shaped heat preservation block to move downwards along the Z direction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021181485.6U CN213482031U (en) | 2020-06-23 | 2020-06-23 | Reaction mechanism for dry chemical analysis apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021181485.6U CN213482031U (en) | 2020-06-23 | 2020-06-23 | Reaction mechanism for dry chemical analysis apparatus |
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| CN213482031U true CN213482031U (en) | 2021-06-18 |
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