阅读说明：本技术 一种试剂柜 (Reagent cabinet ) 是由 盛方渤 段鹏鹏 方晶 于 2021-01-20 设计创作，主要内容包括：本申请公开了一种试剂柜,涉及一种柜子,改善了打开柜门时化学气体会对工作人员造成不适的问题,其包括呈长方体结构的柜体,所述柜体内间隔设置有若干隔板,所述柜体正侧的开口边沿处铰接有用于闭合柜体开口的柜门,柜门呈长方体结构；所述柜体开口的上边沿水平延伸有第一通风板,所述柜体开口的下边沿凸起有与第一通风板平行的第二通风板,所述柜门位于第一通风板与第二通风板之间。本申请通过在柜门中形成一个气体流通的区域,使得工作人员在开启柜门前,能够通过抽风设备将柜体内的气体进行抽取,降低工作人员开启柜门时柜体内气体对工作人员的影响。(The application discloses a reagent cabinet, which relates to a cabinet and solves the problem that chemical gas can cause discomfort to workers when a cabinet door is opened, and comprises a cabinet body in a cuboid structure, wherein a plurality of partition plates are arranged in the cabinet body at intervals, a cabinet door for closing an opening of the cabinet body is hinged at the opening edge at the front side of the cabinet body, and the cabinet door is in the cuboid structure; the cabinet body open-ended goes up the border horizontal extension and has first ventilating board, the protruding second ventilating board that has with first ventilating board parallel of cabinet body open-ended lower border, the cabinet door is located between first ventilating board and the second ventilating board. This application is through forming the region of a gas circulation in the cabinet door for the staff can extract the internal gas of cabinet through air extraction equipment before opening the cabinet door, reduces the staff and opens the internal gas of cabinet when cabinet door to staff's influence.)

1. The utility model provides a reagent cabinet, is including the cabinet body (1) that is the cuboid structure, the interval is provided with a plurality of baffles (2) in the cabinet body (1), its characterized in that: a cabinet door (4) for closing the opening of the cabinet body (1) is hinged to the edge of the opening at the front side of the cabinet body (1), and the cabinet door (4) is of a cuboid structure; a first ventilating plate (7) horizontally extends from the upper edge of the opening of the cabinet body (1), a second ventilating plate (8) parallel to the first ventilating plate (7) is protruded from the lower edge of the opening of the cabinet body (1), and the cabinet door (4) is positioned between the first ventilating plate (7) and the second ventilating plate (8);

a ventilating groove (10) is formed in one side, facing the cabinet body (1), of the cabinet door (4), a ventilating plate (11) is connected to the notch of the ventilating groove (10), a sealing structure is arranged between the ventilating plate (11) and the edge of the opening of the cabinet body (1), a plurality of ventilating holes (13) communicated with the ventilating groove (10) are formed in the ventilating plate (11) at intervals, and the ventilating holes (13) extend in the height direction of the ventilating plate (11);

the upper end and the lower end of the cabinet door (4) are both provided with ventilation openings (9) communicated with the grooves; the first ventilating plate (7) and the second ventilating plate (8) are both provided with a ventilating hole (23) communicated with the ventilating hole (9) when the cabinet door (4) closes the opening of the cabinet body (1), and the cabinet body (1) is provided with an air draft device connected with one ventilating hole (23);

the ventilation board (11) is internally provided with a plugging assembly for sealing ventilation holes (13), the plugging assembly comprises a plugging board (14), one side, far away from the hinged position of the cabinet door (4), of the ventilation board (11) is provided with a sliding groove (15) for the sliding connection of the plugging board (14), a notch of the sliding groove (15) is provided with a limiting strip (16), the plugging board (14) is provided with a plurality of communicating holes (17) which extend along the height direction of the plugging board and are used for being communicated with the ventilation holes (13), and the number of the communicating holes (17) is the same as that of the ventilation holes (13); one side of the sliding groove (15) far away from the limiting strip (16) is provided with an elastic piece which acts on the blocking plate (14) to provide the blocking plate (14) with movement towards the limiting strip (16), and the blocking plate (14) comprises a first state which is used for completely blocking the plurality of ventilation holes (13) when sliding to abut against the limiting strip (16) and a second state which is used for sliding to a communication hole (17) to be communicated with the ventilation holes (13); one side of the plugging plate (14) close to the limiting strip (16) is vertically connected with a push-pull rod (20) which extends out of the limiting strip (16) and is used for pushing and pulling the plugging plate (14);

a locking mechanism used for fixing the cabinet door (4) on the cabinet body (1) when the cabinet door (4) closes the opening of the cabinet body (1) is arranged between the cabinet body (1) and the cabinet door (4).

2. A reagent cabinet according to claim 1, wherein: one side of the cabinet door (4) is rotatably connected with the side edge of the cabinet body (1) through a hinge (6).

3. A reagent cabinet according to claim 2, wherein: the locking mechanism comprises locking rods (26) vertically connected to the upper end face and the lower end face of the blocking plate (14), through grooves (27) communicated with the sliding grooves (15) and used for the locking rods (26) to extend out are formed in the upper end face and the lower end face of the ventilating plate (11), and the through grooves (27) extend along the length direction of the ventilating plate (11); one sides of the first ventilating plate (7) and the second ventilating plate (8) close to each other are provided with long grooves (28) for the sliding connection of the locking rods (26), and the long grooves (28) extend along the length direction of the first ventilating plate (7); outlet grooves (29) which are communicated with the long grooves (28) and used for sliding out of the locking rods (26) are formed in the sides, far away from the cabinet body (1), of the first ventilating plate (7) and the second ventilating plate (8); when the blocking plate (14) slides to the ventilation hole (13) to be communicated with the communication hole (17), the locking rod (26) slides to abut against one end of the long groove (28) communicated with the outlet groove (29) along the length direction of the long groove (28).

4. A reagent cabinet according to claim 3, wherein: the elastic piece is a first spring (18) installed in the sliding groove (15), one end of the first spring (18) is fixedly connected to one end, away from the limiting strip (16), of the plugging plate (14), and the other end of the first spring abuts against the bottom of the sliding groove (15).

5. A reagent cabinet according to claim 3, wherein: a closing plate (30) used for closing the ventilation opening (9) is arranged at the ventilation opening (9) of the second ventilation plate (8), and a stepped groove (31) for mounting the closing plate (30) is formed in the edge of the ventilation opening (9) of the second ventilation plate (8); when the cabinet door (4) closes the opening of the cabinet body (1), one side of the closing plate (30) close to the cabinet body (1) and one side of the ventilation plate (11) departing from the cabinet body (1) are positioned on the same vertical plane; closing plate (30) are provided with guide bar (32) of two symmetries towards ladder groove (31) one side, lower terminal surface of second ventilating board (8) is seted up and is supplied guide bar (32) guide hole (33) of passing with ladder groove (31) intercommunication, the one end that guide bar (32) stretched out guide hole (33) is equipped with and acts on guide bar (32) and provides the driving piece towards ladder groove (31) direction removal trend for closing plate (30).

6. A reagent cabinet according to claim 5, wherein: the driving piece is a second spring (19) sleeved on the guide rod (32), one end, extending out of the lower end face of the second vent plate (8), of the guide rod (32) is provided with a limiting block (34), one end of the second spring (19) abuts against the lower end face of the second vent plate (8), and the other end of the second spring abuts against the limiting block (34).

7. A reagent cabinet according to claim 3, wherein: the outlet groove (29) is obliquely arranged; when one end of the locking rod (26) rotates to the position of the notch of the outlet groove (29) along with the rotation of the cabinet door (4), one end of the blocking plate (14) is abutted to the limiting strip (16).

8. A reagent cabinet according to claim 1, wherein: the sealing structure comprises a sealing ring (12) arranged at the edge of the ventilating plate (11) in a surrounding mode.

Technical Field

The application relates to a cabinet, in particular to a reagent cabinet.

Background

The reagent cabinet is used for storing and storing chemical reagents in a laboratory.

As shown in figure 1, the reagent cabinet in the related art comprises a cabinet body 1 and a cabinet door 4 hinged to one side of an opening of the cabinet body 1, wherein a plurality of partition plates 2 for storing reagents are arranged in the cabinet body 1 at intervals, and the partition plates 2 are horizontally arranged.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: when chemical reagent who deposits in the reagent cabinet produces harmful or irritative gas because of revealing or volatilizing, when the staff opened cabinet door 4 at every turn, the chemical gas that comes on can cause the discomfort to the staff.

Disclosure of Invention

In order to improve chemical gas can lead to the fact uncomfortable problem to the staff when opening the cabinet door, this application provides a reagent cabinet.

The application provides a reagent cabinet adopts following technical scheme:

a reagent cabinet comprises a cabinet body in a cuboid structure, wherein a plurality of partition plates are arranged in the cabinet body at intervals, a cabinet door for closing an opening of the cabinet body is hinged at the opening edge of the front side of the cabinet body, and the cabinet door is in the cuboid structure; a first ventilating plate horizontally extends from the upper edge of the cabinet body opening, a second ventilating plate parallel to the first ventilating plate is protruded from the lower edge of the cabinet body opening, and the cabinet door is positioned between the first ventilating plate and the second ventilating plate;

a ventilation groove is formed in one side, facing the cabinet body, of the cabinet door, a ventilation plate is connected to the notch of the ventilation groove, a sealing structure is arranged between the ventilation plate and the edge of the opening of the cabinet body, a plurality of ventilation holes communicated with the ventilation groove are formed in the ventilation plate at intervals, and the ventilation holes extend in the height direction of the ventilation plate;

the upper end and the lower end of the cabinet door are both provided with ventilation openings communicated with the grooves; the first ventilating plate and the second ventilating plate are both provided with ventilating holes communicated with the ventilating holes when the cabinet door closes the opening of the cabinet body, and the cabinet body is provided with air draft equipment connected with one of the ventilating holes;

the ventilation board is internally provided with a plugging component for sealing ventilation holes, the plugging component comprises a plugging board, one side of the ventilation board, which is far away from the hinge joint of the cabinet door, is provided with a sliding groove for the sliding connection of the plugging board, a notch of the sliding groove is provided with a limiting strip, the plugging board is provided with a plurality of communicating holes which extend along the height direction of the plugging board and are used for communicating with the ventilation holes at intervals, and the number of the communicating holes is the same as that of the ventilation holes; one side of the sliding groove, which is far away from the limiting strip, is provided with an elastic piece which acts on the plugging plate to provide the plugging plate with movement towards the direction of the limiting strip, and the plugging plate comprises a first state which is used for completely plugging the plurality of ventilation holes when sliding to be abutted against the limiting strip and a second state which is used for sliding to be communicated with the ventilation holes; one side of the plugging plate close to the limiting strip is vertically connected with a push-pull rod which extends out of the limiting strip and is used for pushing and pulling the plugging plate;

and a locking mechanism used for fixing the cabinet door on the cabinet body when the cabinet door closes the opening of the cabinet body is arranged between the cabinet body and the cabinet door.

Through adopting above-mentioned technical scheme, before opening the cabinet door, open air extraction equipment for produce the air current of circulation that makes progress in the cabinet door, slide the shutoff board to the second state of intercommunicating pore and ventilative hole intercommunication this moment. Make the internal gas of cabinet get into in the cabinet door through the bleeder vent to take out by air extraction equipment and separate, thereby reduce the internal irritability gas of cabinet, extract a period after, the staff opens the cabinet door again, can reduce the internal gas of cabinet to staff's influence.

Preferably, one side of the cabinet door and the side edge of the cabinet body are connected in a rotating mode through hinges.

By adopting the technical scheme, the hinge is adopted as the hinge element, and the hinge has the advantages of simple structure and stable stress.

Preferably, the locking mechanism comprises locking rods vertically connected to the upper end face and the lower end face of the blocking plate, the upper end face and the lower end face of the ventilation plate are both provided with through grooves communicated with the sliding grooves for the locking rods to extend out, and the through grooves extend along the length direction of the ventilation plate; one sides of the first ventilating plate and the second ventilating plate, which are close to each other, are provided with long grooves for the sliding connection of the locking rods, and the long grooves extend along the length direction of the first ventilating plate; outlet grooves which are communicated with the long grooves and used for sliding out of the locking rods are formed in the sides, far away from the cabinet body, of the first ventilating plate and the second ventilating plate; when the plugging plate slides to the ventilation hole and is communicated with the communication hole, the locking rod slides to abut against one end of the long groove communicated with the outlet groove along the length direction of the long groove.

By adopting the technical scheme, through the arrangement of the locking rod and the long groove, when the locking rod abuts against one end of the long groove far away from the outlet groove, the cabinet door can be fixed; the outlet groove is arranged, so that the locking rod can be conveniently separated from the long groove, and the cabinet door can be released from being fixed.

Preferably, the elastic component is a first spring installed in the sliding groove, one end of the first spring is fixedly connected to one end, away from the limiting strip, of the plugging plate, and the other end of the first spring abuts against the bottom of the sliding groove.

Through adopting above-mentioned technical scheme, adopt first spring as the elastic component, have simple structure, the stable advantage of atress.

Preferably, a closing plate for closing the vent is arranged at the vent of the second vent plate, and a stepped groove for mounting the closing plate is formed in the edge of the vent of the second vent plate; when the cabinet door closes the opening of the cabinet body, one side of the closing plate close to the cabinet body and one side of the ventilation plate departing from the cabinet body are positioned on the same vertical plane; the closing plate is provided with the guide bar of two symmetries towards ladder groove one side, the lower terminal surface of second ventilating board is seted up and is supplied the guiding hole that the guide bar passed with ladder groove intercommunication, the one end that the guiding hole was stretched out to the guide bar is equipped with and acts on the driving piece that the guide bar provided towards ladder groove direction movement trend for the closing plate.

By adopting the technical scheme, when the air draft equipment works, the closing plate moves upwards under the action of negative pressure, and the ventilation opening of the second ventilation plate is opened, so that gas which flows upwards is generated in the cabinet door; and the closing plate moving upwards can block the ventilation plate, so that the ventilation equipment can prevent workers from opening the cabinet door in the ventilation process.

Preferably, the driving piece is a second spring sleeved on the guide rod, a limiting block is arranged at one end, extending out of the lower end face of the second vent plate, of the guide rod, one end of the second spring abuts against the lower end face of the second vent plate, and the other end of the second spring abuts against the limiting block.

Through adopting above-mentioned technical scheme, adopt the second spring as the driving piece, have simple structure, the stable advantage of atress.

Preferably, the outlet trough is arranged obliquely; when one end of the locking rod rotates to the position of the notch positioned in the outlet groove along with the cabinet door, one end of the blocking plate is abutted against the limiting strip.

Through adopting above-mentioned technical scheme, the export groove that the slope set up can make things convenient for when the staff closed the cabinet door, realizes the state of auto-lock.

Preferably, the sealing structure comprises a sealing ring arranged around the edge of the ventilating plate.

Through adopting above-mentioned technical scheme, the sealed effect between ventilative board and the cabinet body can be improved in the setting of sealing washer.

In summary, the present application includes at least one of the following benefits:

1. according to the cabinet door, the air circulation area is formed in the cabinet door, so that before a worker opens the cabinet door, air in the cabinet body can be extracted through the air extracting equipment, and the influence of the air in the cabinet body on the worker when the worker opens the cabinet door is reduced;

2. through the setting of closing plate, can prevent that the staff from opening the cabinet door at the cabinet door in-process of bleeding.

Drawings

FIG. 1 is a schematic diagram of a prior art configuration;

FIG. 2 is a schematic view of the overall structure of the present embodiment;

fig. 3 is a schematic view of the cabinet door of the present embodiment in an open state;

FIG. 4 is an exploded view of the embodiment embodying the louver;

FIG. 5 is a schematic view showing a state in which the ventilation holes and the communication holes of the present embodiment are communicated with each other;

FIG. 6 is a schematic view showing the staggered plugging of the ventilation holes and the communication holes in the present embodiment;

FIG. 7 is a schematic sectional view of the louver of the present embodiment;

fig. 8 is a schematic sectional view of the cabinet of the present embodiment;

FIG. 9 is an enlarged schematic view of the embodiment at A in FIG. 3;

fig. 10 is a schematic view showing a state in which the closing plate of the present embodiment is opened.

Description of reference numerals: 1. a cabinet body; 2. a partition plate; 3. supporting legs; 4. a cabinet door; 5. a handle; 6. a hinge; 7. a first vent panel; 8. a second vent plate; 9. a vent; 10. a ventilation slot; 11. a ventilation plate; 12. a seal ring; 13. a ventilation hole; 14. a plugging plate; 15. a chute; 16. a limiting strip; 17. a communicating hole; 18. a first spring; 19. a second spring; 20. a push-pull rod; 21. a through hole; 22. pulling the block; 23. a vent hole; 24. an exhaust fan; 25. an exhaust pipe; 26. a locking bar; 27. a through groove; 28. a long groove; 29. an outlet tank; 30. a closing plate; 31. a stepped groove; 32. a guide bar; 33. a guide hole; 34. and a limiting block.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

The embodiment of the application discloses a reagent cabinet. Referring to fig. 2 and 3, the reagent cabinet comprises a cabinet body 1 in a cuboid structure, a plurality of partition plates 2 are arranged in the cabinet body 1 at intervals, and the partition plates 2 are horizontally arranged. The reagent may be placed on the partition 2 for storage. Supporting legs 3 are arranged at four corners of the bottom of the cabinet body 1, and the supporting legs 3 can keep a certain distance between the cabinet body 1 and the ground.

Referring to fig. 2 and 3, a cabinet door 4 is hinged to one side of the cabinet body 1 with an opening, and a handle 5 is arranged on the outer side of the cabinet door 4. Further, the cabinet door 4 is hinged with the side edge of the opening of the cabinet body 1 through a hinge 6. The cabinet door 4 can be rotated to a state of closing the opening of the cabinet body 1 by means of the hinge 6.

Referring to fig. 3 and 4, the upper edge of the opening of the cabinet body 1 horizontally extends to form a first ventilating plate 7, the lower edge of the opening of the cabinet body 1 protrudes to form a second ventilating plate 8 parallel to the first ventilating plate 7, and the cabinet door 4 is of a cuboid structure. When the cabinet door 4 rotates to a state of closing the opening of the cabinet body 1, the upper end face and the lower end face of the cabinet door 4 respectively abut against one side of the first ventilating plate 7 and one side of the second ventilating plate 8 which are close to each other.

Referring to fig. 3 and 4, a ventilation groove 10 is formed in one side, facing the cabinet body 1, of the cabinet door 4, a ventilation plate 11 is fixedly connected to a notch of the ventilation groove 10, and a sealing ring 12 is wound around the edge, facing the one side of the cabinet body 1, of the ventilation plate 11. When the cabinet door 4 closes the opening of the cabinet body 1, the sealing ring 12 on the ventilating plate 11 is abutted against the opening edge of the cabinet body 1, so that a sealing structure between the ventilating plate 11 and the opening edge of the cabinet body 1 is formed, and the sealing of the cabinet body 1 is realized.

Referring to fig. 4 and 5, a plurality of ventilation holes 13 communicated with the ventilation slots 10 are formed in the ventilation plate 11 at intervals, the ventilation holes 13 extend along the height direction of the ventilation plate 11, and air in the cabinet body 1 can enter the ventilation slots 10 through the ventilation holes 13.

Referring to fig. 4 and 5, a plugging component is arranged in the ventilation plate 11, and the plugging component can plug the ventilation hole 13. The shutoff subassembly includes shutoff board 14, and ventilative board 11 is kept away from one side of hinge 6 and is offered the spout 15 that supplies shutoff board 14 sliding connection, and the notch department interference joint of spout 15 has the spacing 16 that is used for preventing shutoff board 14 to break away from spout 15.

Further, referring to fig. 4 and 5, a plurality of vertically extending communication holes 17 are formed at intervals on the blocking plate 14, and the number of the communication holes 17 is the same as that of the ventilation holes 13. The blocking plate 14 includes a first state in which it completely blocks the ventilation plate 11 and a second state in which the communication hole 17 communicates with the corresponding ventilation hole 13.

Referring to fig. 6, when the blocking plate 14 is in the first state, the blocking plate 14 slides to a position abutting against the stopper 16, and at this time, the communication holes 17 on the blocking plate 14 are alternately spaced from the ventilation holes 13 on the ventilation plate 11, so that the blocking plate 14 seals the ventilation plate 11.

Referring to fig. 5, when the blocking plate 14 is in the second state, the blocking plate 14 slides towards the direction away from the position-limiting strip 16, so that the communication holes 17 on the blocking plate 14 are communicated with the corresponding ventilation holes 13, and the gas in the cabinet body 1 can enter the ventilation slots 10.

Referring to fig. 5 and 6, one side of the sliding groove 15, which is away from the limiting strip 16, is provided with an elastic element acting on the blocking plate 14 to provide the blocking plate 14 with an elastic element moving towards the limiting strip 16, the elastic element is a first spring 18, one end of the first spring 18 is fixedly connected to one end of the blocking plate 14, which is away from the limiting strip 16, and the other end of the first spring abuts against the bottom of the sliding groove 15. Under the effect of no external force, the first spring 18 can push the plugging plate 14 to abut against the limiting strip 16, so that the sealing of the ventilation plate 11 is realized.

Referring to fig. 6 and 7, a push-pull rod 20 is vertically welded in the middle of one end of the plugging plate 14 away from the first spring 18, a through hole 21 for the push-pull rod 20 to pass through is formed in the limiting strip 16, and a pulling block 22 is fixedly connected to one end of the push-pull rod 20 extending out of the limiting strip 16. The arrangement of the pulling block 22 can increase the contact area of the pulling rod 20 and the palm of the user, thereby facilitating the pushing of the plugging plate 14 by the staff.

Referring to fig. 8, the upper and lower end faces of the cabinet door 4 are both provided with vents 9 communicated with the ventilation grooves 10, and the first ventilation plate 7 and the second ventilation plate 8 are both provided with ventilation holes 23. When the cabinet door 4 closes the opening of the cabinet body 1, the vent holes 23 on the first vent plate 7 and the second vent plate 8 are respectively communicated with the corresponding vent holes 9 on the cabinet door 4. Be equipped with the updraft ventilator who is used for being connected with one of them ventilation hole 23 on the cabinet body 1, updraft ventilator is for erectting in the air exhauster 24 of the 1 up end of the cabinet body, and air exhauster 24 passes through exhaust column 25 and connects in the ventilation hole 23 of first ventilating board 7, and the other end of exhaust column 25 can link to each other with outside ventilation system to in going into ventilation system with the gas row of extraction. Before cabinet door 4 opens, start exhaust fan 24 to with shutoff board 14 remove to the state of intercommunicating pore 17 with ventilative hole 13 intercommunication, exhaust fan 24 accessible exhaust column 25 at this moment extracts the gas in ventilation groove 10, wait that exhaust fan 24 extracts the internal gas of cabinet 1 after a period, open cabinet door 4 again, can reduce the chemical gas phenomenon of coming towards the staff.

Referring to fig. 7, a locking mechanism for fixing the cabinet door 4 is disposed between the cabinet body 1 and the cabinet door 4. The locking mechanism includes two locking rods 26 vertically connected to the upper and lower end faces of the plugging plate 14, and the two locking rods 26 are coaxially arranged. The upper end face and the lower end face of the ventilating plate 11 are both provided with a through groove 27 communicated with the sliding groove 15 for the locking rod 26 to extend out, and the through groove 27 extends along the length direction of the ventilating plate 11.

Further, referring to fig. 7 and 9, the first ventilation plate 7 and the second ventilation plate 8 are provided with a long groove 28 for slidably connecting the locking rod 26, and the long groove 28 extends along the length direction of the first ventilation plate 7. The first ventilating board 7 and the second ventilating board 8 are provided with an outlet groove 29 communicated with one end of the long groove 28 at one side far away from the cabinet body 1, the outlet groove 29 is arranged towards the inclination, and the locking rod 26 can slide out of the cabinet body 1 through the outlet groove 29. When the locking rod 26 moves to a position where it abuts on one end of the long groove 28 close to the outlet groove 29, the communication hole 17 on the blocking plate 14 is in a communication state with the ventilation hole 13.

When the cabinet door 4 moves to the position of the locking rod 26 at the notch of the outlet slot 29 far away from one end of the cabinet body 1, the blocking plate 14 is in a position that one side of the blocking plate butts against the limiting strip 16; when the cabinet door 4 is closed, the locking rod 26 can move towards one end of the long groove 28 through the inclined outlet groove 29, in the process that the locking rod 26 moves towards the direction of the long groove 28 along the outlet groove 29, the blocking plate 14 moves towards the direction of the first spring 18, the first spring 18 is gradually pressed, and when the locking rod 26 moves to the position of the long groove 28, the first spring 18 can push the blocking plate 14 to move towards the direction of the limiting strip 16, so that the blocking plate 14 drives the locking rod 26 to move the end, away from the outlet groove 29, of the long groove 28, and the cabinet door 4 is fixed.

Referring to fig. 8 and 10, a closing plate 30 for closing the ventilation opening 9 is provided at the ventilation opening 9 of the second ventilation plate 8. Furthermore, a stepped groove 31 for mounting the closing plate 30 is formed at the edge of the vent 9 of the second vent plate 8. The closing plate 30 is provided with two symmetrical guide rods 32 towards one side of the stepped groove 31 perpendicularly, the lower end face of the second vent plate 8 is provided with a guide hole 33 communicated with the stepped groove 31 for the guide rod 32 to pass through, and one end of the guide rod 32 extending out of the guide hole 33 is provided with a driving piece acting on the guide rod 32 to provide a trend of moving towards the stepped groove 31 for the closing plate 30. The driving member is a second spring 19 sleeved on the guide rod 32. The end of the guide rod 32 extending out of the lower end face of the second vent plate 8 is welded with a limit block 34, one end of the second spring 19 abuts against the lower end face of the second vent plate 8, and the other end abuts against the limit block 34. Under the action of no external force, the second spring 19 can act on the limiting block 34, so that the closing plate 30 is abutted on the stepped groove 31 under the action of the second spring 19, and the closing of the ventilation opening 9 of the second ventilation plate 8 is realized.

Referring to fig. 8 and 10, when the cabinet door 4 closes the opening of the cabinet 1, one side of the closing plate 30 close to the cabinet 1 and one side of the ventilation plate 11 away from the cabinet 1 are in the same vertical plane. When the exhaust fan 24 is used for extracting gas in the cabinet body 1, the closing plate 30 moves upwards under the action of wind force of the exhaust fan 24 and realizes upward flowing air flow, and the rising closing plate 30 can block the ventilation plate 11, so that misoperation that the cabinet door 4 is opened by a worker in the process of extracting gas by the exhaust fan 24 is avoided.

The implementation principle of the reagent cabinet in the embodiment of the application is as follows:

before opening cabinet door 4, open air exhauster 24 to push away push-and-pull rod 20 towards the direction of first spring 18, make intercommunicating pore 17 and ventilative hole 13 on the shutoff board 14 communicate, the gas in the cabinet body 1 can be taken out to the outside of cabinet body 1 by air exhauster 24 this moment, treat that air exhauster 24 extracts a period of time after, close air exhauster 24, make closure plate 30 lid close on second ventilative board 8, thereby relieve the fixed to cabinet door 4, make the staff can open cabinet door 4 and take the reagent.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.