Biological safety cabinet for laboratory

Abstract

The utility model belongs to the technical field of biological safety cabinets, and particularly relates to a laboratory biological safety cabinet which comprises a base, a safety cabinet body is vertically connected right above the base in a sliding mode, two symmetrically-arranged storage grooves are formed in the surface of the base, and protection mechanisms are arranged in the storage grooves. The front position of the safety cabinet body is blocked by arranging the protection mechanism, the placement frame and the warning tape, personnel are prevented from mistakenly entering the area of the safety cabinet body, the personnel are prevented from approaching and driving air to flow, the probability of cross contamination between the personnel and samples or between the samples is further reduced, and the working efficiency is improved. The safety cabinet has the advantages that the safety cabinet is simple in structure and convenient to use, the accuracy of the safety cabinet body in the test process is improved, the safety and stability of the safety cabinet body in use and the accuracy in the subsequent test process are guaranteed, the occupied area can be reduced when the safety cabinet body is not used, the safety cabinet body can be quickly unfolded when needed, meanwhile, the placement frame can be stably stored, and the equipment convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of biological safety cabinets, in particular to a laboratory biological safety cabinet. Background Art

[0002] Biosafety cabinets are essential equipment in medical experiments. They mainly use the high-efficiency filter net in the cabinet to filter the air in and out, and generate downward airflow in the cabinet to effectively reduce the chance of laboratory-acquired infection and the chance of cross-contamination between people and samples or between samples. They are used to protect operators, laboratory environment, and biosafety of experimental materials.

[0003] The existing safety cabinet has certain defects when in use. When people nearby walk quickly near the safety cabinet, it is easy to cause the air near the biological safety cabinet operating table to flow quickly, resulting in unstable airflow inside and outside the cabinet. The existing safety cabinet is difficult to protect the area where medical examinations are performed, making it difficult to ensure stable and safe operation of the safety cabinet, and thus difficult to ensure the accuracy of the test process;

[0004] In view of the above technical defects, a solution is now proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a laboratory biological safety cabinet, which blocks the front of the safety cabinet by setting a protective mechanism to prevent people from accidentally entering the safety cabinet area and preventing people from approaching and causing air flow, thereby further reducing the chance of cross contamination between people and samples or between samples, and solving the problems raised by the background technology.

[0006] The purpose of the utility model can be achieved by the following technical solution: a laboratory biological safety cabinet, comprising a base, a safety cabinet body is vertically slidably connected directly above the base, two symmetrically arranged storage grooves are provided on the surface of the base, and a protective mechanism is arranged in the storage groove;

[0007] The protection mechanism includes two placement racks that are slidably connected to the two storage grooves respectively, and the upper surfaces of the placement racks are provided with installation cavities, a warning tape is provided in the installation cavities of one of the placement racks, and an opening for the warning tape to pass through is provided on the side of the placement rack, a mounting piece is fixedly connected to the side of the placement rack close to the base, the mounting piece is penetrated and screwed with a screw, cavities are provided on both sides of the base, and a limit block is fixedly installed in the cavity of the base, a mounting block is fixedly connected to one side of the limit block, and the mounting block is penetrated and limitedly slidably connected to have two locking pieces that engage with the screws.

[0008] Preferably, two groups of symmetrically arranged guide rods are fixedly connected to the lower surface of the safety cabinet body, each group of guide rods is provided with two guide rods, and the two guide rods penetrate the base and are slidably connected to the base in a vertical direction.

[0009] Preferably, a mounting frame is fixedly installed in the cavity of the base, a hydraulic rod is penetrated and fixedly installed on the mounting frame and the base, and the telescopic end of the hydraulic rod penetrates the base and is fixedly connected to the lower surface of the safety cabinet body.

[0010] Preferably, two limit rods are fixedly connected to one side of the placement rack close to the safety cabinet body, and the two limit rods extend into the storage slot, penetrate the limit block, and are slidably connected to the limit block in the horizontal direction.

[0011] Preferably, an installation groove is opened on the upper surface of the installation block, and a limit strip is fixedly connected to the inner wall of the installation groove. The limit strip passes through two locking plates and is slidingly connected with the locking plates. Two symmetrically arranged springs are sleeved on the outer wheel of the limit strip, and the springs are against the locking plates.

[0012] Preferably, a cover plate is fixedly connected to the upper surface of the mounting block, a gear is rotatably connected to the upper surface of the cover plate on a fixed axis, two symmetrically arranged racks meshing with the gear are slidably connected to the upper surface of the cover plate in a horizontal direction, and push columns passing through the cover plate are fixed to the lower surfaces of the two racks, the two push columns are respectively abutted against locking plates, and one of the racks is fixedly connected to a push rod passing through the base.

[0013] Beneficial effects of the utility model:

[0014] (1) The utility model blocks the front of the safety cabinet body by setting a protective mechanism, a placement rack and a warning tape to prevent people from accidentally entering the safety cabinet body area, so that the safety cabinet body has a sufficient safety distance to prevent people from approaching and driving air flow, further reducing the chance of cross contamination between people and samples or between samples, improving the accuracy of the test process using the safety cabinet body, and ensuring the safety and stability of the safety cabinet body when in use and the accuracy of subsequent test processes;

[0015] (2) The placement rack can be recovered through the storage groove provided on the surface of the base, which can reduce the floor space when not in use and can be quickly unfolded when needed. At the same time, the locking plate can automatically separate and position the installation plate, thereby achieving stable storage of the placement rack and improving the convenience of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings;

[0017] Figure 1 The utility model has an overall structure of three-dimensional Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the structure of the placement rack of the utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the base cavity of the utility model;

[0020] Figure 4 This is a schematic diagram of the installation block structure of the utility model;

[0021] Figure 5 It is a schematic diagram of the rack structure of the utility model.

[0022] Legend: 1. Base; 2. Safety cabinet body; 3. Storage slot; 4. Placement rack; 5. Warning tape; 6. Installation cavity; 7. Opening; 8. Limit block; 9. Guide rod; 10. Hydraulic rod; 11. Mounting plate; 12. Screw; 13. Limit rod; 14. Mounting rack; 15. Mounting block; 16. Locking plate; 17. Cover plate; 18. Installation slot; 19. Gear; 20. Rack; 21. Push column; 22. Push rod; 23. Spring; 24. Limit strip. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Embodiment 1:

[0025] This embodiment is used to solve the problem that the existing safety cabinet is difficult to protect the area where medical examinations are performed, thereby making it difficult to ensure stable and safe operation of the safety cabinet and thus making it difficult to ensure accuracy during the test.

[0026] See also Figure 1 - Figure 5 As shown, this embodiment is a laboratory biological safety cabinet, including a base 1, a safety cabinet body 2 is vertically slidably connected directly above the base 1, when the safety cabinet body 2 moves in the vertical direction, the vertical height of the safety cabinet body 2 is adjusted, and two symmetrically arranged storage grooves 3 are opened on the surface of the base 1, and a protective mechanism is arranged in the storage groove 3;

[0027] The protection mechanism includes two placement racks 4 that are slidably connected to the two storage slots 3, respectively. The storage slots 3 store the placement racks 4, which can reduce the space occupied at ordinary times. The upper surface of the placement racks 4 is provided with installation cavities 6. A warning tape 5 is arranged in the installation cavity 6 of one of the placement racks 4. The warning tape 5 is a cassette-type automatic retractable warning tape.

[0028] An opening 7 for the end of the warning tape 5 to be clamped is provided on the side of the placement rack 4. The buckle at the end of the warning tape 5 is inserted into the installation cavity 6 through the opening 7 on the side of the placement rack 4, so that it can be stably inserted into the installation cavity 6. A mounting plate 11 is fixedly connected to the side of the placement rack 4 close to the base 1. The mounting plate 11 is penetrated and screwed with a screw 12. The bottom end of the screw 12 is fixedly connected to a support block. The support block is rotated to make the support block fit the ground, so that the placement rack 4 can be stably placed, thereby realizing the blockade of the position directly in front of the safety cabinet body 2, ensuring a sufficient safety distance in front of it, and preventing personnel from walking close to the direction of the safety cabinet body 2, driving air flow, and thus affecting the use of the safety cabinet body 2;

[0029] Cavities are provided on both sides of the base 1, and the cavity of the base 1 is connected to the storage slot 3. A limit block 8 is fixedly installed in the cavity of the base 1, and a mounting block 15 is fixedly connected to one side of the limit block 8. The mounting block 15 is penetrated and limitedly slidably connected with two locking pieces 16 engaged with the screw 12. The ends of the two locking pieces 16 that are close to each other are V-shaped, which is convenient for the mounting piece 11 to be inserted between the two locking pieces 16. An arc-shaped bayonet matching the mounting piece 11 is provided between the two locking pieces 16, and the placement rack 4 is pushed to move into the storage slot 3, which can separate the two locking pieces 16. The mounting piece 11 is located between the two locking pieces 16, so that the mounting piece 11 can be positioned, so that the placement rack 4 stored in the storage slot 3 can be positioned.

[0030] Two groups of symmetrically arranged guide rods 9 are fixedly connected to the lower surface of the safety cabinet body 2, and each group of guide rods 9 is provided with two. The two guide rods 9 pass through the base 1 and are slidably connected to the base 1 in the vertical direction. The guide rods 9 limit the vertical direction of the safety cabinet body 2 so that the corresponding mounting plates 11 can move stably in the vertical direction.

[0031] A mounting frame 14 is fixedly installed in the cavity of the base 1, and a hydraulic rod 10 is penetrated and fixedly installed on the mounting frame 14 and the base 1. The telescopic end of the hydraulic rod 10 penetrates the base 1 and is fixedly connected to the lower surface of the safety cabinet body 2. When the hydraulic rod 10 is started, the telescopic end of the hydraulic rod 10 pushes the safety cabinet body 2 to move in the vertical direction, and the guide rod 9 penetrates the base 1 and the mounting frame 14 at the same time and is connected to the mounting frame 14 in a limited sliding manner.

[0032] Two limit rods 13 are fixedly connected to one side of the placement rack 4 close to the safety cabinet body 2. The two limit rods 13 extend into the storage slot 3, penetrate the limit block 8 and are slidably connected to the limit block 8 in the horizontal direction. The setting of the two limit rods 13 can limit the placement rack 4 so that it can be easily aligned with the storage slot 3 and the placement rack 4 can be inserted into the storage slot 3.

[0033] An installation groove 18 is formed on the upper surface of the installation block 15, and a limit strip 24 is fixedly connected to the inner wall of the installation groove 18. The limit strip 24 passes through the two locking pieces 16 and is limitedly slidably connected with the locking pieces 16. Two symmetrically arranged springs 23 are sleeved on the outer wheel of the limit strip 24, and the springs 23 resist the locking pieces 16.

[0034] Embodiment 2:

[0035] This embodiment is used to solve the problem of stable recycling of the placement rack 4.

[0036] See also Figure 1 , Figure 5 As shown, a laboratory biosafety cabinet of this embodiment has an installation groove 18 on the upper surface of the installation block 15, and a limit strip 24 is fixedly connected to the inner wall of the installation groove 18. The limit strip 24 passes through two locking pieces 16 and is slidably connected with the locking pieces 16. Two symmetrically arranged springs 23 are sleeved on the outer wheel of the limit strip 24, and the springs 23 are against the locking pieces 16. Under the action of the locking pieces 16, when the installation piece 11 moves between the two locking pieces 16, the installation piece 11 can be automatically locked, which can prevent the placement rack 4 from being easily moved out of the storage slot 3 during transportation and handling.

[0037] The upper surface of the mounting block 15 is fixedly connected to a cover plate 17, and a gear 19 is rotatably connected to the upper surface of the cover plate 17. Two symmetrically arranged racks 20 meshing with the gear 19 are slidably connected to the upper surface of the cover plate 17 in a horizontal direction, but when one of the racks 20 moves, the other rack 20 can move in the opposite direction.

[0038] A pushing column 21 penetrating the cover plate 17 is fixed to the lower surface of the two racks 20, and a sliding groove for the movement of the pushing column 21 is opened on the upper surface of the cover plate 17. The two pushing columns 21 respectively abut against the locking pieces 16. One of the racks 20 is fixedly connected to a pushing rod 22 penetrating the base 1, pushing the pushing rod 22 fixedly connected to the rack 20. The pushing rod 22 moves and causes the gear 19 to push the other rack 20 to move in the opposite direction. When the pushing column 21 at the bottom of the rack 20 fixedly connected to the pushing rod 22 pushes the locking piece 16 to move toward the inner wall of the mounting groove 18, the pushing column 21 on the other rack 20 can push the other locking piece 16 in the opposite direction. At this time, the two locking pieces 16 separate and release the lock on the mounting piece 11, making it easy to pull the storage slot 3 out of the placement rack 4.

[0039] Combining Embodiment 1 and Embodiment 2

[0040] By setting up a protective mechanism, the placement rack 4 and the warning tape 5 are blocked off in front of the safety cabinet body 2 to prevent people from accidentally entering the area of ​​the safety cabinet body 2, so that the safety cabinet body 2 has a sufficient safety distance to prevent people from approaching and driving air flow, further reducing the chance of cross contamination between people and samples or between samples, and improving the accuracy of the test process using the safety cabinet body 2. The storage groove 3 provided on the surface of the base 1 can recycle the placement rack 4, which can reduce the floor space when not in use and can be quickly unfolded when needed. At the same time, the locking piece 16 can automatically separate and position the installation piece 11, so as to achieve stable storage of the placement rack 4, improve the convenience of the equipment, and further ensure the safety and stability of the safety cabinet body 2 when in use and the accuracy of subsequent tests.

[0041] like Figure 1 - Figure 5 As shown, the working process and principle of the utility model are as follows:

[0042] Step 1: When using the safety cabinet body 2, start the hydraulic rod 10 to adjust the height of the safety cabinet body 2 to a suitable height, press the push rod 22, and the push column 21 at the bottom of the rack 20 pushes the locking piece 16 to move toward the inner wall of the installation groove 18, and the push column 21 on the other rack 20 pushes the other locking piece 16 in the opposite direction, and the two locking pieces 16 are separated to release the lock of the installation piece 11, and then the storage slot 3 is pulled out from the placement rack 4;

[0043] Step 2, pull the buckle of the warning tape 5, and insert the buckle of the warning tape 5 through the opening 7 on the side of the other placement rack 4 into the installation cavity 6, so as to block the position directly in front of the safety cabinet body 2, so as to ensure a sufficient safety distance in front of it, and prevent people from walking close to the direction of the safety cabinet body 2, which will drive the air flow and affect the use of the safety cabinet body 2. After use, the buckle of the warning tape 5 is taken out from the installation cavity 6, the warning tape 5 is automatically rolled up, and the placement rack 4 is pushed into the storage slot 3 to store the storage slot 3. When the placement rack 4 is pushed to move into the storage slot 3, the two locking pieces 16 can be separated, and the installation piece 11 is located between the two locking pieces 16. Under the action of the spring 23, the installation piece 11 is automatically positioned.

[0044] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

[0045] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0046] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A laboratory biosafety cabinet, comprising a base (1), characterized in that: A safety cabinet body (2) is vertically slidably connected directly above the base (1); two symmetrically arranged storage grooves (3) are provided on the surface of the base (1); and a protective mechanism is provided in the storage grooves (3); The protective mechanism comprises two placement racks (4) respectively connected in a sliding manner to the two storage slots (3); the upper surface of the placement rack (4) is provided with an installation cavity (6); a warning tape (5) is arranged in the installation cavity (6) of one of the placement racks (4); an opening (7) for the warning tape (5) to pass through is arranged on the side of the placement rack (4); a mounting plate (11) is fixedly connected to the side of the placement rack (4) close to the base (1); the mounting plate (11) is penetrated and screwed with a screw (12); cavities are provided on both sides of the base (1); a limit block (8) is fixedly installed in the cavity of the base (1); a mounting block (15) is fixedly connected to one side of the limit block (8); the mounting block (15) is penetrated and limitedly slidably connected to have two locking plates (16) engaged with the screw (12).

2. A laboratory biosafety cabinet according to claim 1, characterized in that: The lower surface of the safety cabinet body (2) is fixedly connected with two groups of symmetrically arranged guide rods (9), each group of the guide rods (9) is provided with two, and the two guide rods (9) penetrate the base (1) and are slidably connected with the base (1) in a vertical direction.

3. A laboratory biosafety cabinet according to claim 1, characterized in that: A mounting frame (14) is fixedly installed in the cavity of the base (1), and a hydraulic rod (10) is penetrated and fixedly installed on the mounting frame (14) and the base (1), and the telescopic end of the hydraulic rod (10) penetrates the base (1) and is fixedly connected to the lower surface of the safety cabinet body (2).

4. A laboratory biological safety cabinet according to claim 1, characterized in that: Two limit rods (13) are fixedly connected to one side of the placement rack (4) close to the safety cabinet body (2); the two limit rods (13) extend into the storage slot (3), penetrate the limit block (8), and are slidably connected to the limit block (8) in the horizontal direction.

5. A laboratory biosafety cabinet according to claim 1, characterized in that: The upper surface of the mounting block (15) is provided with a mounting groove (18), the inner wall of the mounting groove (18) is fixedly connected to a limit strip (24), the limit strip (24) passes through two locking pieces (16) and is connected to the locking pieces (16) in a limited sliding manner, and two symmetrically arranged springs (23) are sleeved on the outer wheel of the limit strip (24), and the springs (23) are against the locking pieces (16).

6. A laboratory biosafety cabinet according to claim 5, characterized in that: The upper surface of the mounting block (15) is fixedly connected to a cover plate (17), the upper surface of the cover plate (17) is rotatably connected to a gear (19), the upper surface of the cover plate (17) is horizontally slidably connected to two symmetrically arranged racks (20) meshing with the gear (19), the lower surfaces of the two racks (20) are fixed with push columns (21) penetrating the cover plate (17), the two push columns (21) respectively abut against the locking plates (16), and one of the racks (20) is fixedly connected to a push rod (22) penetrating the base (1).

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