CN214746887U - Laboratory glassware places structure - Google Patents

Abstract

The utility model relates to a placing structure of experimental instruments, which comprises a supporting plate and at least two supporting rods which are arranged on the supporting plate at intervals; the bottom end of the supporting rod is fixed on the supporting plate, and the top end of the supporting rod extends in the direction far away from the supporting plate; the support rod is internally provided with a hollow channel, the hollow channel extends along the axial direction of the support rod, the top end of the support rod is provided with at least one first vent hole, the side wall of the support rod is provided with at least one second vent hole, and the first vent hole and the second vent hole are communicated with the hollow channel. The utility model provides a structure is placed to laboratory glassware can make the hot gas flow circulate smoothly in laboratory glassware, accounts for than the space big, and no dead angle to can fully dry the moisture of laboratory glassware inner wall, no residual moisture, it is effectual to dry.

Description

Laboratory glassware places structure

Technical Field

The utility model relates to an experiment auxiliary assembly technical field especially relates to a structure is placed to laboratory glassware.

Background

The experimental instrument is used for concrete experiments in natural science and is mainly used in physics, chemistry and biology. Modern laboratory instruments are often used in conical flasks, beakers, measuring cylinders, volumetric flasks, evaporating dishes, etc. Laboratory instruments are frequently used usually, and stains may be adhered in the laboratory instruments after use, so that the laboratory instruments need to be cleaned and dried in time.

At present, when drying laboratory glassware in drying equipment, for example, the erlenmeyer flask, because the hot gas flow can't smoothly circulate in the bottle, often can appear the moisture in the bottle and dry thoroughly, breed the bacterium easily, influence follow-up use, serious can influence the degree of accuracy of follow-up experimental result even.

SUMMERY OF THE UTILITY MODEL

To solve the above technical problem or at least partially solve the above technical problem, the present disclosure provides a laboratory instrument placement structure.

The utility model provides a placing structure of experimental instruments, which comprises a supporting plate and at least two supporting rods arranged on the supporting plate at intervals;

the bottom end of the supporting rod is fixed on the supporting plate, and the top end of the supporting rod extends in the direction far away from the supporting plate;

the support rod is internally provided with a hollow channel, the hollow channel extends along the axial direction of the support rod, the top end of the support rod is provided with at least one first vent hole, the side wall of the support rod is provided with at least one second vent hole, and the first vent hole and the second vent hole are communicated with the hollow channel.

Further, the second ventilation holes are multiple; and part of the second vent holes are arranged at intervals along the axial direction of the support rod, and part of the second vent holes are arranged at intervals along the circumferential direction of the support rod.

Furthermore, a third air vent is formed in the bottom end of the supporting rod and communicated with the hollow channel; and the position of the supporting plate corresponding to the third vent hole is provided with an air inlet.

Further, the aperture of the air inlet is not larger than that of the third vent hole.

Furthermore, a plurality of through holes are formed in the supporting plate, and the through holes are formed into water leakage holes or air inlet holes.

Furthermore, the top end of the supporting rod is provided with a supporting ball, the supporting ball is of a hollow structure communicated with the hollow channel, the supporting ball is provided with a plurality of first air holes which are arranged at intervals, and the first air holes are communicated with the hollow channel.

Furthermore, a flexible buffer layer is arranged at the position, at least in contact with the inner wall of the experimental instrument, of the support ball, and a second air hole corresponding to the first air hole is formed in the flexible buffer layer.

Furthermore, the supporting plate comprises a plurality of sub supporting plates, the sub supporting plates are positioned on the same plane, and the sub supporting plates are detachably connected.

Furthermore, the side walls of the sub-supporting plates are provided with clamping grooves, two adjacent sub-supporting plates are connected through a connecting piece, the connecting piece is provided with a first clamping arm and a second clamping arm, the first clamping arm can be clamped into one of the clamping grooves on the sub-supporting plate, and the second clamping arm can be clamped into the other one of the clamping grooves on the sub-supporting plate, so that the two adjacent sub-supporting plates are connected together.

Furthermore, the size of the notch of the clamping groove is smaller than that of the groove bottom, and the shapes of the first clamping arm and the second clamping arm are matched with the shape of the clamping groove.

Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:

in the experimental instrument placing structure provided by the disclosure, the supporting plate and the at least two supporting rods are arranged on the supporting plate at intervals; the bottom mounting of bracing piece is on the layer board, and the top of bracing piece is along the orientation extension of keeping away from the layer board. When the device is used specifically, the experimental instrument is reversely sleeved outside the supporting rod. Because the inside at the bracing piece has the cavity passageway, the cavity passageway extends along the axial of bracing piece, and has at least one first air vent on the top of bracing piece, is provided with at least one second air vent on the lateral wall of bracing piece, and first air vent and second air vent all communicate with the cavity passageway. So, when drying the laboratory glassware in drying equipment, the hot gas flow not only can get into the inside stoving to it of laboratory glassware through the open end of laboratory glassware, and simultaneously, the hot gas flow can also get into the cavity passageway to in the bracing piece through the second air vent, and discharge through first air vent and part second air vent, that is to say, at the cavity passageway, form airflow channel between first air vent and the second air vent, it is smooth and easy to make the hot gas flow circulate in the laboratory glassware, it is big to account for the specific space, no dead angle, thereby can fully dry the moisture of laboratory glassware inner wall, no residual moisture, it is effectual to dry.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a schematic perspective view of a placement structure of a laboratory instrument according to an embodiment of the present disclosure;

FIG. 2 is a top view of FIG. 1 with one of the support rods removed to show the air inlets in the pallet;

FIG. 3 is a side view of FIG. 1;

FIG. 4 is a partially exploded view of a placement structure of a laboratory instrument according to an embodiment of the present disclosure;

fig. 5 is a schematic view of a card slot of a neutron carrier in a placement structure of a laboratory instrument according to an embodiment of the present disclosure;

FIG. 6 is a schematic perspective view of a connection member between sub-trays of a placement structure for laboratory instruments according to an embodiment of the present disclosure;

fig. 7 is a left side view of fig. 6.

Wherein, 10-pallet; 11-an air inlet; 12-a through hole; 13-a card slot; 131-notches; 132-groove bottom; 20-a support bar; 21-a second vent; 30-a support ball; 31-a first vent; 40-a connector; 41-a first snap arm; 42-second snap arm.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.

Referring to fig. 1 to 7, the present embodiment provides a placement structure for laboratory instruments, which includes a support plate 10 and at least two support rods 20 spaced apart from each other on the support plate 10; the bottom end of the support rod 20 is fixed on the support plate 10, and the top end of the support rod 20 extends in a direction away from the support plate 10.

The laboratory instruments commonly used in modern times include a conical flask, a beaker, a measuring cylinder, a volumetric flask, an evaporating dish, etc., and it can be understood by those skilled in the art that the laboratory instrument placing structure provided by the present disclosure can be used for placing any suitable laboratory instrument, and the following only takes the conical flask as an example to describe in detail the laboratory instrument placing structure provided by the present disclosure.

The support rod 20 may be a cylindrical support rod, a rectangular support rod, a conical support rod, etc., and the support rod can be supported and sleeved on the conical bottle without any limitation. The support rod 20 can be made of any suitable material, and can support and bear the conical flask, so that the strength requirement is met. For example, the support rod 20 may be made of stainless steel, high temperature glass, silicon rubber, or the like.

In addition, the bottom end of the support rod 20 can be directly welded on the support plate 10 or integrally formed with the support plate 10, so that the support rod has good integrity, high strength and excellent bearing performance. Certainly, the bottom end of the supporting rod 20 can be detachably connected with the supporting plate 10 by adopting structural adhesive bonding and other modes, so that the replacement is convenient, and the cost is saved.

In addition, the supporting rod 20 can be a plurality of supporting rods 20, and the plurality of supporting rods 20 are arranged on the same side of the supporting plate 10 at intervals, and in particular, one supporting rod 20 corresponds to one conical flask. So design, on the one hand, can place a plurality of erlenmeyer flasks simultaneously and dry in drying equipment, save time, drying efficiency is higher. On the other hand, a conical flask is sleeved on a supporting rod 20, so that the supporting is stable, and when a large number of conical flasks are placed into the drying equipment and/or taken out of the drying equipment, the phenomena of disordered sequence, dumping and crushing caused by mutual collision of the conical flasks are avoided.

It should be noted that the bottom end of the support rod 20 is the end of the support rod 20 close to the supporting plate 10, and the top end of the support rod 20 is the end of the support rod 20 far from the supporting plate 10.

In this embodiment, the cavity passageway has in the bracing piece 20, the cavity passageway extends along the axial of bracing piece 20, and the top of bracing piece 20 has at least one first air vent, be provided with at least one second air vent 21 on the lateral wall of bracing piece 20, first air vent and second air vent 21 all communicate with the cavity passageway, promptly at first air vent, the cavity passageway, form airflow channel between the second air vent 21, make the hot gas flow not only can be in the erlenmeyer flask that is located the bracing piece 20 outside flow, can also be along this airflow channel circulation in bracing piece 20, thereby the space occupation ratio of hot gas flow in the erlenmeyer flask is high, the circulation is smooth and easy, and then the hot gas flow can fully dry the moisture of erlenmeyer flask inner wall, no residual moisture, it is effectual to dry.

When the drying device is used specifically, the conical bottle is sleeved on the supporting rod 20, the top end of the supporting rod 20 is abutted to the bottom end of the conical bottle, moisture is easily remained at the abutted position, and drying is not thorough. When utilizing the laboratory glassware to place the structure stoving that this disclosure provided, the hot gas flow in the cavity passageway discharges to the bottom of erlenmeyer flask and dries the bottom of erlenmeyer flask through first air vent, and simultaneously, unnecessary hot gas flow in erlenmeyer flask bottom and the cavity passageway can also discharge through second air vent 21, and the phenomenon of the damaged erlenmeyer flask that has avoided the uneven pressure to cause takes place.

The first ventilation hole may be one, and in particular, the top end of the support rod 20 may be partially opened to form the first ventilation hole, and the top end of the support rod 20 may also be fully opened to form the first ventilation hole. Of course, it will be understood by those skilled in the art that the first ventilation hole may be a plurality of first ventilation holes spaced apart from each other at the top end of the support rod 20. One or more second ventilation holes 21 may be provided. In addition, the first vent hole and the second vent hole 21 may be, for example, a rectangular vent hole, a circular vent hole, a diamond-shaped vent hole, etc., which is not limited to this embodiment as long as the air flow can smoothly pass through the vent hole.

Through the technical scheme, in the conical bottle placing structure provided by the disclosure, the supporting plate 10 and the at least two supporting rods 20 which are arranged on the supporting plate 10 at intervals are arranged; the bottom end of the support rod 20 is fixed on the support plate 10, and the top end of the support rod 20 extends in a direction away from the support plate 10. When in specific use, the conical flask is reversely sleeved outside the supporting rod 20. Because the support rod 20 is internally provided with the hollow channel, the hollow channel extends along the axial direction of the support rod 20, the top end of the support rod 20 is provided with at least one first vent hole, the side wall of the support rod 20 is provided with at least one second vent hole 21, and the first vent hole and the second vent hole 21 are both communicated with the hollow channel. Therefore, when the erlenmeyer flask is dried in drying equipment, the hot air current not only can get into the interior of the erlenmeyer flask through the open end of the erlenmeyer flask and dry it, and simultaneously, the hot air current also can get into the hollow channel in the bracing piece 20 through the second air vent 21, and discharge through first air vent and partial second air vent 21, that is, at the hollow channel, form airflow channel between first air vent and the second air vent 21, make the hot air current smooth in the erlenmeyer flask, it is big to account for the specific space, no dead angle, thereby can fully dry the moisture of erlenmeyer flask inner wall, no residual moisture, it is effectual to dry.

In this embodiment, referring to fig. 1, 3 and 4, a plurality of second ventilation holes 21 are provided on the support rod 20, a part of the second ventilation holes 21 are arranged at intervals along the axial direction of the support rod 20, and a part of the second ventilation holes 21 are arranged at intervals along the circumferential direction of the support rod 20, so that a plurality of airflow channels can be formed between the hollow channel and the erlenmeyer flask, that is, the hot airflow can more smoothly circulate between the hollow channel and the erlenmeyer flask outside the support rod 20, and the drying is sufficient.

The plurality of second ventilation holes 21 may be arranged at equal intervals, or may be arranged at any suitable interval. Preferably, part of the second ventilation holes 21 are arranged along the axial direction of the support rod 20 at equal intervals, part of the second ventilation holes 21 are arranged along the circumferential direction of the support rod 20 at equal intervals, the second ventilation holes 21 are uniformly arranged, the appearance is good, and the hot air flow distribution is uniform.

Further, in order to make the flow of the hot air flow smoother, a third vent hole is provided at the bottom end of the support rod 20, that is, a third vent hole is provided at one end of the support rod 20 close to the supporting plate 10, and the third vent hole is communicated with the hollow channel; an air inlet 11 is arranged at the position of the supporting plate 10 corresponding to the third vent hole.

During the specific use, layer board 10 is placed in drying equipment, and the hot gas flow of the side of the bracing piece 20 of keeping away from of tow bar can enter into the cavity passageway through air inlet 11 and third tee bend gas pocket in, add in the endless hot gas flow to make the hot gas flow in the cavity passageway more abundant, help improving drying efficiency, it is effectual to the stoving of erlenmeyer flask inner wall.

Wherein, the third air vent is at least one, and during the concrete implementation, the bottom of bracing piece 20 can be partly opened and be used for forming this third air vent, and the bottom of bracing piece 20 can also all be opened and be used for forming the third air vent. Of course, it will be understood by those skilled in the art that the third vent hole may be a plurality of third vent holes, and a plurality of third vent holes are spaced apart from each other at the bottom end of the support rod 20.

Similarly, there may be one or more air inlets 11 corresponding to the third ventilation holes at the bottom end of each support rod 20. In addition, the third ventilation hole and the air inlet 11 can be, for example, a rectangular hole, a circular hole, a diamond hole, etc., and this embodiment does not limit this too much, as long as the air flow can smoothly pass through.

In this embodiment, in order to stably connect the bottom end of each support rod 20 to the support plate 10, when there is only one air inlet 11 and one third vent, the aperture of the air inlet 11 is not larger than that of the third vent. When the air inlets 11 and the third vent holes are plural, the overall opening size of the plural air inlets 11 is not larger than the overall opening size of the plural third vent holes.

Referring to fig. 1 and 2, a plurality of through holes 12 are opened on a pallet 10, and the through holes 12 are formed as water leakage holes or air intake holes. It will be understood by those skilled in the art that the through-hole 12 and the support bar 20 are located on the same side of the pallet 10.

When the water-saving cleaning device is used specifically, the cleaning water attached to the conical bottle sleeved on the supporting rod 20 in an inverted mode can smoothly drip on the supporting plate 10 under the action of gravity, and the cleaning water on the supporting plate 10 can smoothly flow out through the water leakage holes so as to avoid accumulation of the cleaning water on the supporting plate 10. The through-holes 12 are formed as water leakage holes at this time.

When drying, when not rinsing the water stream time in through-hole 12, steam accessible through-hole 12 in the drying equipment spreads into to erlenmeyer flask one side or directly spreads into to the erlenmeyer flask in, and then makes the remaining washing water evaporation of erlenmeyer flask bottom or lateral wall to realize the purpose that the erlenmeyer flask inner wall was fully dried, not only make things convenient for the follow-up use of erlenmeyer flask, simultaneously, avoided to a certain extent because of the phenomenon emergence of the water influence experiment precision that remains in the erlenmeyer flask. At this time, the through hole 12 is formed as an intake hole.

As an optional implementation manner, the supporting plate 10 is simultaneously provided with a plurality of water leakage holes and a plurality of air inlet holes, which are arranged at intervals, and at this time, the water leakage holes may be blind holes or through holes 12. When the water leakage hole is a blind hole, water in the water leakage hole can be evaporated by hot air in the drying equipment.

As another optional implementation, a water leakage groove is formed in the supporting plate 10, at least one air inlet is formed in the water leakage groove along the thickness direction of the supporting plate 10, the at least one air inlet is arranged at intervals along the extending direction of the water leakage groove, and at this time, the water leakage groove can not only drain cleaning water on the supporting plate 10, but also can transmit hot air into the conical flask.

In the embodiment, referring to fig. 1, 3 and 4, in order to reduce the contact area between the erlenmeyer flask and the support rod 20, a support ball 30 is disposed at the top end of the support rod 20, the support ball 30 is formed into a hollow structure communicated with the hollow channel, a plurality of first air holes 31 are formed in the support ball 30 at intervals, the plurality of first air holes 31 are all communicated with the hollow channel, the contact area between the hot air flow and the bottom of the erlenmeyer flask is larger, and the drying effect is good.

Wherein, the hollow structure in the support ball 30 and the hollow channel intercommunication in the bracing piece 20, that is to say, the hollow structure in the support ball 30 and first air vent and second air vent 21 all communicate, owing to seted up a plurality of first bleeder vents 31 on the support ball 30 again to steam in the drying equipment can enter into in the support ball 30 and discharge to the erlenmeyer flask bottom through first bleeder vent 31 through first air vent, second air vent 21, and then dry to the erlenmeyer flask bottom.

In addition, the plurality of first ventilation holes 31 are arranged at intervals along the side wall of the support ball 30, so that a plurality of air flows are formed on the support ball 30, and the drying is uniform and sufficient.

In addition, the first vent hole 31 may be a rectangular vent hole, a circular vent hole, a diamond-shaped vent hole, or the like.

Further, in order to avoid scratching the conical flask, a flexible buffer layer is arranged at least at the position of the supporting ball 30, which is in contact with the inner wall of the experimental instrument, of course, the outer wall of the supporting ball 30 can be completely wrapped with the flexible buffer layer, the flexible buffer layer is provided with second air holes corresponding to the first air holes 31, one first air hole 31 corresponds to one second air hole, and hot air can smoothly circulate.

Wherein, flexible buffer layer can be made with arbitrary suitable material, can realize to the flexible cushioning effect of erlenmeyer flask can. For example, the flexible buffer layer can be made of silicon rubber, foam and the like.

As an alternative embodiment, the support balls 30 are formed as silicone support balls 30 or the like.

Further, for being applicable to not unidimensional drying equipment, layer board 10 includes a plurality of sub-layer boards, and a plurality of sub-layer boards are located the coplanar, and detachable the connection between a plurality of sub-layer boards to can be according to drying equipment's specific size, the sub-layer board concatenation that will be fit for quantity is used together, has improved the experimental apparatus that this disclosure provided and has placed the suitability of structure.

In this embodiment, referring to fig. 5 to 7, for convenience of connection, a clamping groove 13 is disposed on a side wall of each sub-supporting plate, two adjacent sub-supporting plates are connected through a connecting member 40, the connecting member 40 has a first clamping arm 41 and a second clamping arm 42, the first clamping arm 41 can be clamped into the clamping groove 13 on one of the sub-supporting plates, and the second clamping arm 42 can be clamped into the clamping groove 13 on the other one of the sub-supporting plates, so as to connect the two adjacent sub-supporting plates together.

For the convenience of connection, a plurality of clamping grooves 13 are formed in the side wall of the sub-supporting plate, and the plurality of clamping grooves 13 are arranged at intervals along the circumferential direction of the sub-supporting plate.

Further, referring to fig. 5 to 7, in order to reliably connect the two adjacent sub-trays, the size of the notch 131 of the card slot 13 is smaller than that of the slot bottom 132, that is, at least one inner wall of the connecting notch 131 and the slot bottom 132 of the card slot 13 is inclined, and the shapes of the first and second engaging arms 41 and 42 are matched with the shape of the card slot 13. It will be appreciated by those skilled in the art that the thickness of the first snap arm 41 decreases from the edge of the connector 40 to the center of the connector 40, and likewise, the thickness of the second snap arm 42 decreases from the edge of the connector 40 to the center of the connector 40.

When the supporting rod is used specifically, the inclined inner wall of the clamping groove 13 has a limiting effect on the connecting piece 40, the first clamping arm 41 and the second clamping arm 42 are prevented from being pulled out of the clamping groove 13, two adjacent sub-supporting plates are connected reliably, a plurality of sub-supporting plates are spliced to form the whole supporting plate 10, the integrity is good, and the whole supporting plate 10 forms a stable bearing surface for the supporting rod 20.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The experimental instrument placing structure is characterized by comprising a supporting plate (10) and at least two supporting rods (20) which are arranged on the supporting plate (10) at intervals;

the bottom end of the supporting rod (20) is fixed on the supporting plate (10), and the top end of the supporting rod (20) extends in the direction far away from the supporting plate (10);

the utility model discloses a bracing piece, including bracing piece (20), have the cavity passageway in the bracing piece (20), the cavity passageway is followed the axial extension of bracing piece (20), just the top of bracing piece (20) has at least one first air vent, be provided with at least one second air vent (21) on the lateral wall of bracing piece (20), first air vent with second air vent (21) all with the cavity passageway intercommunication.

2. Laboratory instrument placement arrangement according to claim 1, characterized in that said second venting holes (21) are plural;

part of the second vent holes (21) are arranged at intervals along the axial direction of the support rod (20), and part of the second vent holes (21) are arranged at intervals along the circumferential direction of the support rod (20).

3. Laboratory instrument placement arrangement according to claim 1, characterized in that the bottom end of the support bar (20) has a third venting hole, which communicates with the hollow channel;

and the position of the supporting plate (10) corresponding to the third vent hole is provided with an air inlet (11).

4. Laboratory instrument placement arrangement according to claim 3, characterized in that the aperture of the gas inlet opening (11) is not larger than the aperture of the third venting opening.

5. The laboratory instrument placement structure according to claim 1, wherein said supporting plate (10) is provided with a plurality of through holes (12), and said through holes (12) are formed as water leakage holes or air intake holes.

6. The placement structure according to any one of claims 1 to 5, wherein a support ball (30) is disposed at a top end of the support rod (20), the support ball (30) is formed as a hollow structure communicating with the hollow channel, a plurality of first air holes (31) are formed at intervals on the support ball (30), and the plurality of first air holes (31) are all communicated with the hollow channel.

7. The placement structure of laboratory instruments according to claim 6, wherein said support ball (30) is provided with a flexible buffer layer at least at the position contacting with the inner wall of the laboratory instrument, said flexible buffer layer is provided with a second vent hole corresponding to said first vent hole (31).

8. Laboratory instrument placement arrangement according to anyone of claims 1 to 5, characterized in that said pallet (10) comprises a plurality of sub-pallets, which are located on the same plane and detachably connected therebetween.

9. The placement structure according to claim 8, wherein the side walls of the sub-trays are provided with clamping slots (13), two adjacent sub-trays are connected by a connecting member (40), the connecting member (40) has a first clamping arm (41) and a second clamping arm (42), the first clamping arm (41) can be clamped into the clamping slot (13) on one of the sub-trays, and the second clamping arm (42) can be clamped into the clamping slot (13) on the other sub-tray, so as to connect two adjacent sub-trays together.

10. The laboratory instrument placement structure according to claim 9, wherein the slot opening (131) of the card slot (13) has a smaller size than the slot bottom (132), and the first snap arm (41) and the second snap arm (42) each have a shape matching the shape of the card slot (13).

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