CN220356927U - Reaction cup and optical analysis device - Google Patents

Abstract

The utility model discloses a reaction cup and an optical analysis device, wherein the optical analysis device comprises a fixed seat, a reaction cup, a light source assembly and a light source receiver; the reaction cup comprises a cup body and a liquid guide structure, wherein the upper end of the cup body is provided with an open cup opening; the liquid guide structure is connected to the outer wall surface of the cup body in a surrounding mode, a liquid guide channel communicated with the outer wall surface of the cup body is formed in the liquid guide structure, and reaction liquid overflowed from the cup opening is suitable for being discharged outwards through the liquid guide channel. Through additionally setting up the drain structure at the outer wall of cup, the drain passageway on the drain structure can guide the flow direction that overflows the reaction liquid from the cup rim of a cup, avoids the reaction liquid that overflows to pollute the optical detection passageway, destroys optical device even, has improved the accuracy of optical analysis device measuring result, has reduced optical analysis device's fault rate.

Description

Reaction cup and optical analysis device

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a reaction cup and an optical analysis device.

Background

An optical analyzer is an instrument for analyzing a finished product of a substance in a sample based on an optical principle, and generally comprises a fixed seat, and a light source assembly, a reaction cup and a light source receiver which are arranged on the fixed seat. The reaction cup is used for containing a sample to be detected, the light source emitted by the light source assembly penetrates through the transparent reaction cup and then is received by the light source receiver, and the light source receiver can analyze the composition and concentration of a certain substance in the sample according to the received light signal.

The reaction cup in the existing optical analyzer is a conical cup body with a large upper opening and a lower opening, the lower half part of the reaction cup is arranged on the fixing seat, the side wall of the reaction cup is provided with a liquid injection channel, and part of samples enter the reaction cup from the liquid injection channel of the reaction cup.

However, in the liquid injection process, the sample in the reaction cup easily overflows outwards from the cup opening at the upper end of the reaction cup, and the sample overflows from the cup opening to pollute an optical detection channel between the optical assembly and the light source receiver, so that the accuracy of a measurement result is affected.

Disclosure of Invention

Therefore, the technical problem to be solved by the utility model is to overcome the defect that the sample liquid overflowed from the reaction cup in the prior art easily pollutes the optical detection channel so as to influence the accuracy of the measurement result, thereby providing the reaction cup and the optical analysis device.

In order to solve the technical problems, the technical scheme of the utility model is as follows:

a reaction cup, comprising:

the upper end of the cup body is provided with an open cup opening;

the liquid guide structure is connected to the outer wall surface of the cup body in a surrounding manner; the liquid guide structure is provided with a liquid guide channel communicated with the outer wall surface of the cup body, and the reaction liquid overflowed from the cup opening is suitable for being discharged outwards through the liquid guide channel.

Further, the liquid guiding structure comprises:

the liquid guide plate is flat and surrounds and is connected to the outer wall surface of the cup body, and the upper surface of the liquid guide plate is perpendicular to the axis of the cup body;

at least two baffles are connected to the liquid guide plate, extend from the liquid guide plate to the cup mouth, and the liquid guide groove formed by surrounding the adjacent baffles above the liquid guide plate is the liquid guide channel.

Further, the liquid guide plate comprises a first liquid guide plate and a second liquid guide plate which are positioned on the same plane and are in butt joint with each other; the baffle comprises at least two first baffles connected to the first liquid guide plate and at least two second baffles connected to the second liquid guide plate; at least two first baffle enclose on first drain board and close and form first drain groove, at least two second baffle enclose on the second drain board and close and form second drain groove, first drain groove with the second drain groove is the drain passageway.

An optical analysis device, comprising:

the fixing seat is provided with a mounting cavity with an opening at the top;

the reaction cup is adopted; the lower part of the cup body is arranged in the mounting cavity, the liquid guide structure is positioned at the top opening of the mounting cavity, and the opposite sides of the cup body are respectively a light inlet surface and a light outlet surface;

the light source assembly is arranged on the fixed seat and positioned at one side of the light incident surface of the cup body, and is suitable for emitting detection light to the light incident surface of the cup body;

the light source receiver is arranged on the fixing seat and positioned at one side of the light emitting surface of the cup body and is suitable for receiving detection light emitted from the light emitting surface of the cup body.

Further, the fixing seat is provided with a side opening positioned on the side surface of the mounting cavity, the outer wall of the cup body is provided with a plurality of liquid injection channels communicated with the inner cavity of the cup body, and the liquid injection channels are positioned on one side of the cup body, which faces the side opening.

Further, a mounting clamping groove is formed above the fixing seat, and the outer edge of the liquid guide structure is limited in the mounting clamping groove; the fixing base top is equipped with and is located the mounting hole of installation draw-in groove one side, be connected with the piece that compresses tightly on the mounting hole, compress tightly the piece at least part pressure in the top of drain structure.

Further, the liquid draining direction of the liquid guiding channel avoids the side opening.

Further, a light incident surface of the cup body is provided with a light incident area for detecting light rays to be incident into the cup body; the light-emitting surface of the cup body is provided with a light-emitting area for detecting light rays to emit out of the cup body; the outer wall of the cup body is provided with a first light leakage prevention structure arranged around the light inlet area and a second light leakage prevention structure arranged around the light outlet area; the first light leakage prevention structure is positioned between the cup body and the light source assembly, and the second light leakage prevention structure is positioned between the cup body and the light source receiver.

Further, the first light-leakage preventing structure and the second light-leakage preventing structure are square frame structures which are surrounded by three sides, and one side, facing the bottom of the mounting cavity, of the first light-leakage preventing structure and the second light-leakage preventing structure is a side wall which is not surrounded by the square frame structures.

Further, the fixing base is provided with a positioning structure which is in limit fit with the first light leakage prevention structure and/or the second light leakage prevention structure in a protruding mode on the cavity wall of the mounting cavity so as to position the cup body.

The technical scheme of the utility model has the following advantages:

1. according to the reaction cup provided by the utility model, the liquid guide structure is additionally arranged on the outer wall surface of the cup body, the liquid guide channel on the liquid guide structure can guide the flow direction of the overflowed reaction liquid from the cup opening of the cup body, the problem that the overflowed reaction liquid pollutes the optical detection channel in the optical analysis device and even damages the optical device is avoided, the accuracy of the measurement result of the optical analysis device is improved, and the failure rate of the optical analysis device is reduced.

2. According to the reaction cup provided by the utility model, the liquid guide groove formed by enclosing the liquid guide plate and the at least two baffles is used as the liquid guide channel, the liquid guide groove can guide the discharge direction of the reaction liquid, so that the discharged reaction liquid can be far away from the optical detection channel in the optical analysis device as far as possible, and the probability of pollution of the optical detection channel is reduced.

3. According to the reaction cup provided by the utility model, the liquid guide plate is formed by butt joint of the first liquid guide plate and the second liquid guide plate which are positioned on the same plane, so that the liquid guide plate is more convenient to manufacture, the liquid guide plate is more easily attached to the outer wall of the cup body, and leakage of reaction liquid from the joint gap of the outer wall surface of the cup body and the liquid guide plate is prevented.

4. The optical analysis device provided by the utility model adopts the reaction cup, and has the advantages of simple structure, low manufacturing cost, high accuracy of measurement results and low failure rate.

5. According to the optical analysis device provided by the utility model, the plurality of liquid injection channels are used for injecting samples or various reaction reagents into the inner cavity of the cup body, so that the reaction reagents react with the samples; the arrangement of the upper side opening of the fixing seat can provide an extension space for the liquid injection channel, so that the liquid injection operation is more convenient.

6. According to the optical analysis device provided by the utility model, the mounting clamping groove is arranged above the fixing seat, and the mounting clamping groove is utilized to position and limit the liquid guide structure, so that the liquid guide structure and the cup body can be prevented from tilting, the cup body can be better kept in a vertical arrangement state, and the phenomenon that the reaction liquid in the cup body overflows the cup mouth is difficult to occur. In addition, after the liquid guide structure is arranged in the installation clamping groove, the top opening of the installation cavity can be shielded, external light is prevented from entering the optical detection channel inside the optical analysis device from the top opening, the influence of external stray light on the optical measurement result is reduced as much as possible, and the accuracy of the measurement result is further improved.

7. According to the optical analysis device provided by the utility model, in order to facilitate the liquid injection operation on the cup body, the side edge of the fixing seat is inevitably provided with the open side surface opening, the liquid discharge direction of the liquid guide channel avoids the side surface opening, and the reaction liquid discharged by the liquid guide channel can be prevented from entering the mounting cavity through the side surface opening direction to influence the accuracy of the measurement result.

8. According to the optical analysis device provided by the utility model, the first light leakage prevention structure and the second light leakage prevention structure form shielding in the light inlet area and the light outlet area, so that on one hand, the leakage of detection light of the optical detection channel can be prevented, and the optical measurement result is prevented from being influenced by light leakage; on the other hand, external stray light or moisture can be prevented from entering the optical detection channel, and the accuracy of the measurement result is improved.

9. According to the optical analysis device provided by the utility model, the first light leakage prevention structure and/or the second light leakage prevention structure are/is positioned by utilizing the positioning structure on the fixing seat, so that the reliability and the positioning precision of the lower part fixing of the cup body can be improved.

10. According to the optical analysis device provided by the utility model, due to the unclosed structural design of the first light-leakage-preventing structure and the second light-leakage-preventing structure towards one side of the bottom of the mounting cavity, the reaction cup can be vertically inserted into the mounting cavity from the top opening of the mounting cavity, and the first light-leakage-preventing structure and the second light-leakage-preventing structure are in limit fit with the positioning structure.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an optical analysis device according to an embodiment of the present utility model;

FIG. 2 is a schematic structural diagram of a reaction cup according to an embodiment of the present utility model.

Reference numerals illustrate: 100. a fixing seat; 101. installing a clamping groove; 102. a side opening; 200. a reaction cup; 210. a cup body; 211. a light-emitting region; 212. a liquid outlet; 220. a liquid guiding structure; 221. a liquid guide plate; 222. a baffle; 223. a liquid guiding groove; 230. a liquid injection channel; 240. a first light leakage prevention structure; 250. a second light leakage preventing structure; 260. an axis of the cup body; 300. a light source assembly; 400. a light source receiver; 500. and a pressing member.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

An optical analysis device as shown in fig. 1-2 includes a holder 100, a cuvette 200, a light source assembly 300, and a light source receiver 400. Wherein, the inside of the fixing base 100 is provided with a mounting cavity suitable for mounting the reaction cup 200, the lower end of the reaction cup 200 extends into the mounting cavity, and the opposite sides of the reaction cup 200 are respectively a light incident surface and a light emergent surface. The light source assembly 300 is fixedly installed on the fixing base 100 and located at one side of the light incident surface of the reaction cup 200, and is used for emitting detection light to the light incident surface of the reaction cup 200. The light source receiver 400 is mounted on the fixing base 100 and located at one side of the light emitting surface of the reaction cup 200, and is used for receiving the detection light emitted from the light emitting surface of the reaction cup 200. The light path channel formed by the detection light emitted by the light source assembly 300 and received by the light source receiver 400 through the cuvette 200 is an optical detection channel.

In some embodiments, the mounting cavity has a top opening and two side openings 102, the two side openings 102 opening on opposite sides of the mounting cavity of the holder 100, the two side openings 102, the light source assembly 300, and the light source receiver 400 being located on four different sides of the mounting cavity, respectively. Two reaction cups 200 are installed in the installation cavity, each reaction cup 200 is correspondingly provided with a light source assembly 300 and a light source receiver 400, and the reaction cups 200 extend into the installation cavity from the top opening of the installation cavity. It will be appreciated that when only one reaction cup 200 is mounted in the mounting cavity, the holder 100 may be provided with a side opening 102 on only one side.

In some embodiments, the reaction cup 200 includes a cup body 210, a liquid guiding structure 220, and a plurality of liquid injection channels 230. The upper end of the cup 210 is provided with an open cup mouth, the lower end of the cup 210 is provided with a liquid outlet 212, the outer diameter of the cup mouth is larger than that of the liquid outlet 212, and the whole cup mouth is of a horn-shaped structure with a large upper part and a small lower part so as to store more reaction liquid in the cup 210. The liquid outlet 212 of the cup 210 may be connected to a liquid discharge pump via a hose, and the liquid discharge pump may discharge the reaction liquid in the cup 210 to the outside via the liquid outlet 212 when being started. Further, the drain port 212 of the cup 210 is tapered to facilitate the draining of the reaction liquid in the cup 210, and avoid the influence of the residual reaction liquid on the measurement result of the next sample. When the reaction liquid in the cup 210 is excessive, the reaction liquid may overflow outward through the cup opening with the upper end opened.

The plurality of liquid injection channels 230 are integrally formed on the outer wall of the cup 210 and are communicated with the inner cavity of the cup 210, part of the liquid injection channels 230 are used for injecting samples into the cup 210, and the other part of the liquid injection channels 230 are used for injecting various reaction reagents into the cup 210, and the reaction reagents react with the samples in the inner cavity of the cup 210. The plurality of injection channels 230 are located at the same side of the cup 210, and typically, the height of the injection channel 230 for injecting a sample is higher than the height of the injection channel 230 for injecting a reaction reagent. The extending directions of the plurality of liquid injection channels 230 are all directed to the side opening 102, and the opening of the side opening 102 is smaller than the width of the mounting cavity; the arrangement of the side opening 102 on the fixing base 100 can provide extension space for the plurality of liquid injection channels 230, so that the interface ends of the plurality of liquid injection channels 230 can be exposed, and the liquid injection operation is more convenient.

The liquid guiding structure 220 is connected to the outer wall surface of the cup 210 in a surrounding manner, and the height of the liquid guiding structure 220 is lower than the height of the cup mouth; the liquid guiding structure 220 is formed with a liquid guiding channel communicating with the outer wall surface of the cup 210, and the reaction liquid overflowed from the cup opening is suitable for being discharged outwards through the liquid guiding channel. Specifically, the liquid guiding structure 220 may be tightly fixed on the outer wall surface of the cup body 210 by using glue adhesion, and there is no gap between the liquid guiding structure 220 and the outer wall surface of the cup body 210, which can be permeated by liquid. The liquid guide channel on the liquid guide structure 220 can guide the flowing direction of the overflowing reaction liquid from the cup opening of the cup body 210, so that the problem that the overflowing reaction liquid pollutes an optical detection channel in the optical analysis device and even damages an optical device is avoided, the accuracy of the measurement result of the optical analysis device is improved, and the failure rate of the optical analysis device is reduced.

In some embodiments, the drain direction of the drain channel avoids the side opening 102; for example, the liquid discharge direction of the liquid guide channel is set along the connection line direction of the light source assembly 300 and the light source receiver 400. By the arrangement, the reaction liquid discharged by the liquid guide channel can be prevented from entering the mounting cavity through the side opening 102, and the accuracy of the measurement result is prevented from being influenced.

In some embodiments, liquid guiding structure 220 includes a liquid guiding plate 221 in a flat plate shape and three baffles 222 located above liquid guiding plate 221; the liquid guide plate 221 is adhesively connected to the outer peripheral surface of the cup 210, and the upper surface of the liquid guide plate 221 is perpendicular to the axis of the cup 210; three baffles 222 are integrally formed above the liquid guide plate 221 and extend from the liquid guide plate 221 to the cup opening, the three baffles 222 are mutually parallel, and a liquid guide groove 223 formed by surrounding the two adjacent baffles 222 above the liquid guide plate 221 is a liquid guide channel. The liquid guide groove 223 formed by the liquid guide plate 221 and the baffle plate 222 in a surrounding way is used as a liquid guide channel, the liquid guide groove 223 can guide the discharging direction of the reaction liquid, so that the discharged reaction liquid can be far away from the optical detection channel in the optical analysis device as far as possible, and the probability of pollution of the optical detection channel is reduced. It will be appreciated that the number and arrangement of the baffles 222 on the liquid guiding plate 221 may be arbitrarily set as long as the baffles 222 can form liquid guiding grooves 223 on the liquid guiding plate 221 for guiding the directional discharge of the reaction liquid. In an alternative embodiment, the liquid guiding channel may be a liquid guiding hole formed inside the liquid guiding plate 221, and the inlet end of the liquid guiding hole is disposed close to the outer wall surface of the cup body 210 but not connected to the cup body 210, so that the reaction liquid overflowed from the cup opening can enter the inlet end of the liquid guiding hole.

In some embodiments, liquid guide plate 221 includes a first liquid guide plate and a second liquid guide plate that are on the same plane and are in butt joint with each other; the first liquid guide plate surrounds the periphery of the light incident surface side of the cup 210, the second liquid guide plate surrounds the periphery of the light emergent surface side of the cup 210, and the first liquid guide plate and the second liquid guide plate can form a tight connection structure through gluing. The baffle 222 comprises three first baffles integrally connected to the first liquid guide plate and three second baffles integrally connected to the second liquid guide plate; the three first baffles enclose on the first liquid guide plate to form a first liquid guide groove, the three second baffles enclose on the second liquid guide plate to form a second liquid guide groove, and the first liquid guide groove and the second liquid guide groove are both liquid guide channels. The liquid guide structure 220 adopts a mode of split type and then splice to form a whole, so that the difficulty in controlling the machining precision of the mounting hole of the cup body 210 on the liquid guide plate 221 is reduced, the split type liquid guide plate 221 is more easily tightly connected with the outer wall surface of the cup body 210 through bonding, and the problem of liquid leakage caused by the fact that a matching gap exists between the liquid guide plate 221 and the outer wall surface of the cup body 210 due to the machining precision error of the mounting hole of the cup body 210 on the liquid guide plate 221 is avoided.

In some embodiments, the mounting clamping groove 101 located at the top of the mounting cavity is arranged above the fixing seat 100, the bottom surface of the liquid guide structure 220 is supported at the bottom of the mounting clamping groove 101, the outer edge of the liquid guide structure 220 is matched with the side wall of the mounting clamping groove 101, the shape and the size of the mounting clamping groove 101 are the same as those of the liquid guide structure 220, the mounting clamping groove 101 forms position limitation on the liquid guide structure 220, the liquid guide structure 220 and the cup body 210 can be prevented from being inclined, the cup body 210 can be better kept in a vertical arrangement state, and the reaction liquid in the cup body 210 is not easy to overflow the cup mouth. In addition, after the liquid guide structure 220 is arranged in the mounting clamping groove 101, the liquid guide structure 220 can cover the top opening of the mounting cavity, so that external light is prevented from entering the optical detection channel inside the optical analysis device from the top opening, the influence of external stray light on the optical measurement result is reduced as much as possible, and the accuracy of the measurement result is further improved.

In some embodiments, the top of the fixing base 100 is provided with a mounting hole located at one side of the mounting slot 101, and the mounting hole is connected with a pressing member 500, where a portion of the pressing member 500 presses above the liquid guiding structure 220. The mounting hole is specifically a threaded hole, and the pressing member 500 is specifically a screw screwed to the threaded hole. The pressing member 500 is pressed on the upper portion of the liquid guiding structure 220, so that the upper portion of the reaction cup 200 can be better fixed, and the stability of the reaction cup 200 can be improved.

In some embodiments, the light incident surface of the cup 210 is provided with a light incident area for detecting light incident into the cup 210; the light emergent surface of the cup 210 is provided with a light emergent region 211 for detecting light rays to be emitted out of the cup 210; the outer wall of the cup 210 is provided with a first light leakage prevention structure 240 arranged around the light incident region and a second light leakage prevention structure 250 arranged around the light emergent region 211; the first light leakage preventing structure 240 is located between the cup 210 and the light source assembly 300, and the second light leakage preventing structure 250 is located between the cup 210 and the light source receiver 400. The first light leakage preventing structure 240 and the second light leakage preventing structure 250 form shielding in the light incident area and the light emergent area 211, so that on one hand, the detection light leakage of the optical detection channel can be prevented, and the optical measurement result is prevented from being influenced by light leakage; on the other hand, external stray light or moisture can be prevented from entering the optical detection channel, and the accuracy of the measurement result is improved.

In some embodiments, the fixing base 100 is provided with a positioning structure protruding from the wall of the mounting cavity, which is in limit fit with the first light-leakage preventing structure 240 and the second light-leakage preventing structure 250 to position the cup 210. The positioning structure can position the first light leakage preventing structure 240 and the second light leakage preventing structure 250, and can improve reliability and positioning accuracy of the lower fixing of the cup 210. The positioning structure may be a positioning edge or a positioning column extending from the fixing base 100 to the first light-leakage preventing structure 240 or the second light-leakage preventing structure 250.

Specifically, the first light-leakage preventing structure 240 and the second light-leakage preventing structure 250 are square frame structures with three surrounding surfaces, and one side of the first light-leakage preventing structure 240 and the second light-leakage preventing structure 250 facing the bottom of the installation cavity is a side wall with the square frame structures not surrounding; so designed, the reaction cup 200 is convenient to vertically insert into the mounting cavity from the top opening of the mounting cavity and the first light leakage preventing structure 240 and the second light leakage preventing structure 250 are in limit fit with the positioning structure.

In summary, according to the reaction cup and the optical analysis device provided by the embodiments of the present utility model, the liquid guiding structure 220 with the liquid guiding channel is additionally provided on the outer wall surface of the cup 210, and the liquid guiding channel can guide the flow direction of the overflowed reaction liquid from the cup opening of the cup 210, so as to avoid the problem that the overflowed reaction liquid contaminates the optical detection channel inside the optical analysis device and even damages the optical device, improve the accuracy of the measurement result of the optical analysis device, and reduce the failure rate of the optical analysis device. Moreover, the upper portion of the reaction cup 200 is fixed by the mounting clamping groove 101 and the pressing piece 500, and the lower portion of the reaction cup 200 is limited by the mode that the light leakage preventing structure is matched with the positioning structure, so that the verticality of the cup 210 can be improved, and the cup 210 is prevented from inclining and freely rotating.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims (10)

1. A reaction cup, comprising:

the upper end of the cup body (210) is provided with an open cup opening;

a liquid guiding structure (220) which is connected on the outer wall surface of the cup body (210) in a surrounding way; the liquid guide structure (220) is provided with a liquid guide channel communicated with the outer wall surface of the cup body (210), and the reaction liquid overflowed from the cup opening is suitable for being discharged outwards through the liquid guide channel.

2. The reaction cup of claim 1 wherein the liquid guiding structure (220) comprises:

a liquid guide plate (221) which is flat and is connected to the outer wall surface of the cup body (210) in a surrounding manner, wherein the upper surface of the liquid guide plate (221) is perpendicular to the axis of the cup body (210);

at least two baffles (222) are connected to the liquid guide plate (221), extend from the liquid guide plate (221) to the cup opening, and a liquid guide groove (223) formed by surrounding the adjacent baffles (222) above the liquid guide plate (221) is the liquid guide channel.

3. The reaction cup of claim 2 wherein the liquid guide plate (221) comprises a first liquid guide plate and a second liquid guide plate that are on the same plane and are in butt joint with each other; the baffle plate (222) comprises at least two first baffle plates connected to the first liquid guide plate and at least two second baffle plates connected to the second liquid guide plate; at least two first baffle enclose on the first drain board and close and form first drain groove, at least two second baffle enclose on the second drain board and close and form second drain groove, first drain groove with the second drain groove is the drain passageway.

4. An optical analysis device, comprising:

a fixed seat (100) provided with a mounting cavity with an opening at the top;

a cuvette (200) according to any one of the preceding claims 1-3; the lower part of the cup body (210) is arranged in the mounting cavity, the liquid guide structure (220) is positioned at the top opening of the mounting cavity, and the opposite sides of the cup body (210) are respectively a light inlet surface and a light outlet surface;

the light source assembly (300) is arranged on the fixed seat (100) and positioned on one side of the light incident surface of the cup body (210) and is suitable for emitting detection light to the light incident surface of the cup body (210);

the light source receiver (400) is arranged on the fixing seat (100) and positioned on one side of the light emitting surface of the cup body (210) and is suitable for receiving detection light emitted from the light emitting surface of the cup body (210).

5. The optical analysis device according to claim 4, wherein the fixing base (100) is provided with a side opening (102) located at the side of the installation cavity, the outer wall of the cup body (210) is provided with a plurality of liquid injection channels (230) communicated with the inner cavity of the cup body (210), and the liquid injection channels (230) are located at one side of the cup body (210) facing the side opening (102).

6. The optical analysis device according to claim 4, wherein a mounting clamping groove (101) is arranged above the fixing seat (100), and the liquid guide structure (220) is limited in the mounting clamping groove (101); the top of the fixing seat (100) is provided with a mounting hole positioned at one side of the mounting clamping groove (101), the mounting hole is connected with a pressing piece (500), and the pressing piece (500) is at least partially pressed above the liquid guide structure (220).

7. The optical analysis device according to claim 5, wherein the drain direction of the liquid guiding channel avoids the side opening (102).

8. The optical analysis device according to any one of claims 4 to 7, wherein the light entrance surface of the cup (210) is provided with a light entrance area for detecting light rays entering the cup (210); the light-emitting surface of the cup body (210) is provided with a light-emitting area (211) for detecting light rays to be emitted out of the cup body (210); a first light leakage prevention structure (240) arranged around the light inlet area and a second light leakage prevention structure (250) arranged around the light outlet area (211) are arranged on the outer wall of the cup body (210); the first light leakage preventing structure (240) is located between the cup (210) and the light source assembly (300), and the second light leakage preventing structure (250) is located between the cup (210) and the light source receiver (400).

9. The optical analysis device according to claim 8, wherein a positioning structure which is in limit fit with the first light leakage preventing structure (240) and/or the second light leakage preventing structure (250) to position the cup body (210) is convexly arranged on a cavity wall of the fixing base (100) corresponding to the mounting cavity.

10. The optical analysis device according to claim 9, wherein the first light-leakage preventing structure (240) and the second light-leakage preventing structure (250) are each a square frame structure surrounded by three sides, and a side of the first light-leakage preventing structure (240) and the second light-leakage preventing structure (250) facing the bottom of the mounting cavity is a side wall not surrounded by the square frame structure.