CN111804350A

CN111804350A - Biological safety cabinet

Info

Publication number: CN111804350A
Application number: CN202010757548.6A
Authority: CN
Inventors: 刘相东
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2020-10-23

Abstract

The invention relates to a biosafety cabinet which comprises a box body and a support, wherein the box body is connected with the support, an air inlet pipeline and an air outlet pipeline are arranged on the box body, a suction fan is arranged at the joint of the air inlet pipeline and the box body, cutoff valves are respectively arranged on the air inlet pipeline and the air outlet pipeline, the air inlet end and the air outlet end of the air inlet pipeline respectively extend out of the room, a working chamber is arranged on the box body, a centrifugal assembly is arranged in the working chamber, the centrifugal assembly comprises a base, a bearing plate and a centrifugal machine, and the lower end face of the base is arranged on the lower end face of the working chamber. The design of the air inlet pipeline and the air outlet pipeline can well supplement outdoor air into the box body, and meanwhile, the air can be exhausted from the outside through the air outlet pipeline, so that the condition of negative pressure cannot occur inside a laboratory, and the air pressure inside the laboratory cannot be influenced.

Description

Biological safety cabinet

Technical Field

The invention relates to the technical field of laboratory equipment, in particular to a biological safety cabinet.

Background

The biological safety cabinet is a box-shaped air purification negative pressure safety device which can prevent aerosol from dissipating when some dangerous or unknown biological particles are contained in the experimental operation and treatment process. The biological safety cabinet is widely applied to scientific research, teaching, clinical examination and production in the fields of microbiology, biomedicine, genetic engineering, biological products and the like, is the most basic safety protection equipment in a primary protection barrier in laboratory biological safety, viral nucleic acid can be researched through the biological safety cabinet in an epidemic situation, the biological safety cabinet in the prior art only has an air exhaust function, so that the air pressure in a laboratory can be influenced, in addition, the biological safety cabinet in the prior art does not have a centrifugal function, so that the viral nucleic acid cannot be separated, in addition, certain electrical elements can generate great vibration in the using process, so that the using condition of the biological safety cabinet can be influenced, in addition, the biological safety cabinet in the prior art, workers mostly directly sit near a workbench during the working period and sit for a long time, the legs and the feet of the workers are very tired, the present invention proposes a new solution to the above problems.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a biological safety cabinet.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: a biosafety cabinet comprises a box body and a support, wherein the box body is connected with the support, an air inlet pipeline and an air outlet pipeline are arranged on the box body, a suction fan is arranged at the joint of the air inlet pipeline and the box body, cutoff valves are respectively arranged on the air inlet pipeline and the air outlet pipeline, the air inlet end and the air outlet end of the air inlet pipeline respectively extend out of the box body, a working chamber is arranged on the box body, a centrifugal assembly is arranged in the working chamber and comprises a base, a bearing plate and a centrifugal machine, the lower end face of the base is arranged on the lower end face of the working chamber, a containing tank extends downwards from the upper end face of the base, the bearing plate is movably arranged in the containing tank, the centrifugal machine is arranged on the upper end face of the bearing plate, a buffer spring is arranged between the lower end face of the bearing plate and the bottom, the leg rest assembly comprises a massage roller and an adjusting rod, the two ends of the massage roller are movably connected with the support through the adjusting rod respectively, massage balls are arranged on the massage roller, and a pedal area is arranged on the massage roller.

Preferably, the support is provided with a sliding positioning rod and a threaded rod, the two adjusting rods are respectively connected with the sliding positioning rod and the threaded rod, one of the adjusting rods is in threaded connection with the threaded rod, and the bottom end of the threaded rod is rotatably connected with the support.

In a further preferred mode, the bottom end and the top end of the threaded rod are respectively connected with the support through bearings, and the lower half portion of the threaded rod is provided with a rotating handle.

Preferably in further, a sliding groove is formed in the side wall of the accommodating groove, sliding blocks corresponding to the sliding groove are arranged on two sides of the bearing plate, a blocking groove extends inwards on the outer side wall of the base, a blocking block is arranged in the blocking groove, and the blocking block is detachably connected with the base.

In a further preferred mode, the bottom end of the bracket is provided with a carrying rod, a lapping plate and a roller, the upper end surface of the lapping plate is connected with the carrying rod, and the lower end surface of the lapping plate is connected with the roller.

In a further preferred mode, the lap plate is further connected with a stabilizing assembly, the stabilizing assembly comprises a movable rod, a handle and a stabilizing block, the movable rod penetrates through the bottom end of the lap plate to be connected with the stabilizing block, and the top end of the movable rod is connected with the handle.

In a further preferred aspect, the massage balls are provided in plural numbers, which are respectively mounted on the massage rollers.

In a further preferred embodiment, the buffer springs are provided in a plurality and are respectively arranged between the receiving plate and the bottom end of the accommodating groove at equal intervals.

In a further preferred embodiment, a plurality of the sliding grooves and the plurality of the sliding blocks are provided to correspond to each other.

In a further preferred embodiment, two bearings are provided between the massage roller and the adjustment lever, which are respectively arranged symmetrically to each other between the massage roller and the adjustment lever.

(III) advantageous effects

Compared with the prior art, the invention provides a biological safety cabinet, which has the following beneficial effects:

the design of the air inlet pipeline and the air outlet pipeline can well supplement outdoor air into the box body, and simultaneously the air can be exhausted outside the wind direction through the air outlet pipeline, so that negative pressure can not occur in the laboratory, the air pressure in the laboratory can not be influenced, in addition, the wind power can be controlled through the cut-off valve, the air inlet speed and the air exhaust speed can be controlled, the design of the centrifugal machine can well separate virus nucleic acid, thereby better performing experiments, in addition, the vibration brought by the centrifugal machine can be well relieved through the matching design of the damping spring, the bearing plate, the sliding block and the sliding groove, thereby not influencing other electrical elements, the design of the leg rest assembly can well play a role in lapping on legs and feet, can play a role in loosening, the design of the roller can well move the whole equipment, in addition, the design of the stabilizing block can well support the whole equipment, and the displacement of the whole equipment is prevented.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the base and centrifuge of the present invention;

fig. 3 is a partial structure enlarged view of a in fig. 2.

In the figure: 1. a box body; 2. a support; 3. an air inlet pipeline; 4. an exhaust duct; 5. a suction fan; 6. a shutoff valve; 7. a working chamber; 8. a base; 9. a bearing plate; 10. a centrifuge; 11. accommodating grooves; 12. a buffer spring; 13. a massage roller; 14. adjusting a rod; 15. a massage ball; 16. a pedaling zone; 17. sliding the positioning rod; 18. a threaded rod; 19. rotating the handle; 20. a chute; 21. a slider; 22. a blocking groove; 23. a blocking block; 24. a bearing rod; 25. a lap plate; 26. a roller; 27. a movable rod; 28. a handle; 29. and (7) stabilizing the block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b):

referring to fig. 1-3, a biosafety cabinet comprises a box body 1 and a bracket 2, wherein the box body 1 is connected with the bracket 2, an air inlet pipeline 3 and an air outlet pipeline 4 are arranged on the box body 1, a suction fan 5 is arranged at the joint of the air inlet pipeline 3 and the box body 1, a cut-off valve 6 is respectively arranged on the air inlet pipeline 3 and the air outlet pipeline 4, the air inlet end and the air outlet end of the air inlet pipeline 3 respectively extend to the outside, a working chamber 7 is arranged on the box body 1, a centrifugal assembly is arranged in the working chamber 7, the centrifugal assembly comprises a base 8, a bearing plate 9 and a centrifuge 10, the lower end surface of the base 8 is arranged on the lower end surface of the working chamber 7, a containing groove 11 extends downwards from the upper end surface of the base 8, the bearing plate 9 is movably arranged in the containing groove 11, the centrifuge 10 is arranged, be provided with buffer spring 12 between the lower terminal surface of accepting board 9 and the bottom of holding tank 11, the latter half of support 2 is provided with shank rest assembly, shank rest assembly includes massage roller 13 and regulation pole 14, and massage roller 13 both ends are respectively through adjusting pole 14 and support 2 swing joint, be provided with massage ball 15 on the massage roller 13, be provided with pedal region 16 on the massage roller 13.

In this embodiment, a sliding positioning rod 17 and a threaded rod 18 are arranged on the bracket 2, the two adjusting rods 14 are respectively connected with the sliding positioning rod 17 and the threaded rod 18, one of the adjusting rods 14 is in threaded connection with the threaded rod 18, and the bottom end of the threaded rod 18 is rotatably connected with the bracket 2. The adjusting rod 14 is in threaded connection with the threaded rod 18, and the sliding positioning rod 17 mainly plays a role in supporting and stabilizing, so that the massage roller 13 can be well adjusted in use height.

In this embodiment, the bottom end and the top end of the threaded rod 18 are respectively connected with the bracket 2 through bearings, and the lower half part of the threaded rod 18 is provided with a rotating handle 19. The rotating handle 19 is held so as to drive the threaded rod 18 to rotate, so that the massage roller 13 is driven to move up and down, and the massage roller is suitable for people with different heights and can adjust different heights of lap joints of legs.

In this embodiment, a sliding groove 20 is disposed on a side wall of the accommodating groove 11, sliding blocks 21 corresponding to the sliding groove 20 are disposed on two sides of the receiving plate 9, a blocking groove 22 extends inwards on an outer side wall of the base 8, a blocking block 23 is disposed inside the blocking groove 22, and the blocking block 23 is detachably connected with the base 8. The matching design of the sliding groove 20 and the sliding block 21 can well install the bearing plate 9 in the accommodating groove 11, and in addition, the blocking block 23 can well block the sliding block 21 and prevent the sliding block 21 from sliding out of the sliding groove 20. The stop block 23 passes through the stop groove 22 and is communicated with the sliding groove 20 so as to stop the sliding block 21, and the stop block 23 is detachably connected with the base 8 through a bolt.

In this embodiment, the bottom end of the bracket 2 is provided with a receiving rod 24, a bridging plate 25 and a roller 26, the upper end surface of the bridging plate 25 is connected with the receiving rod 24, and the lower end surface thereof is connected with the roller 26.

In this embodiment, a fixing assembly is further connected to the strap 25, and the fixing assembly includes a movable rod 27, a handle 28 and a fixing block 29, wherein the movable rod 27 penetrates through the strap 25 and is connected to the fixing block 29, and the top end of the movable rod is connected to the handle 28. The handle 28 rotates the movable rod 27 until the stabilizing block 29 contacts the ground, thereby stabilizing the overall equipment support.

In this embodiment, the massage balls 15 are provided in plural numbers, which are respectively mounted on the massage rollers 13. The design of a plurality of massage balls 15 can massage the legs well, and the staff can put the legs on the massage roller 13 to turn back and forth, and can massage the legs through the massage balls 15.

In this embodiment, the buffer springs 12 are provided in a plurality and are respectively arranged between the receiving plate 9 and the bottom end of the receiving groove 11 at equal intervals. The design of the plurality of buffer springs 12 can well support the bearing plate 9, and the stability is higher.

In the present embodiment, a plurality of the sliding grooves 20 and the sliding blocks 21 are respectively provided corresponding to each other. The design of the sliding chute 20 and the sliding block 21 can well enable the bearing plate 9 to slide up and down in the accommodating groove 11, so that the vibration generated by the centrifuge 10 can be buffered.

In the present embodiment, two bearings are provided between the massage roller 13 and the adjustment lever 14, and the two bearings are respectively provided between the massage roller 13 and the adjustment lever 14 in a mutually symmetrical manner. A bearing is provided between the massage roller 13 and the adjustment lever 14 so that the massage roller 13 can be rotated well.

Example 2:

the biosafety cabinet has the functions of air supplement and air exhaust, outdoor air can be well extracted into the biosafety cabinet through the suction fan 5 and the air inlet pipeline 3, a filter is preferably arranged in the biosafety cabinet and used for filtering the air entering the biosafety cabinet, and similarly, the filter is also arranged at the air exhaust position and used for filtering gas generated in the experimental process to prevent the gas from polluting the environment.

Example 3:

on the basis of embodiment 2, the staff can place the virus nucleic acid test tube in centrifuge 10, carry out centrifugal setting to virus nucleic acid through centrifuge 10, thereby can study virus nucleic acid better, centrifuge 10 produced vibrations in the use extrusion buffer spring 12 downwards, thereby can cushion vibrations better, slider 21 reciprocates along spout 20, in addition, can move whole equipment to other positions well through gyro wheel 26, after moving suitable position, rotatory handle 28, until stabilizing block 29 extrudees with ground contact.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A biosafety cabinet comprises a box body and a support, the box body is connected with the support, and the biosafety cabinet is characterized in that an air inlet pipeline and an air outlet pipeline are arranged on the box body, a suction fan is arranged at the joint of the air inlet pipeline and the box body, cutoff valves are respectively arranged on the air inlet pipeline and the air outlet pipeline, the air inlet end and the air outlet end of the air inlet pipeline respectively extend out of the room, a working chamber is arranged on the box body, a centrifugal assembly is arranged in the working chamber, the centrifugal assembly comprises a base, a bearing plate and a centrifuge, the lower end face of the base is arranged on the lower end face of the working chamber, a containing groove extends downwards from the upper end face of the base, the bearing plate is movably arranged in the containing groove, the centrifuge is arranged on the upper end face of the bearing plate, a buffer spring is arranged between the lower end face of the, the leg rest assembly comprises a massage roller and an adjusting rod, the two ends of the massage roller are movably connected with the support through the adjusting rod respectively, massage balls are arranged on the massage roller, and a pedal area is arranged on the massage roller.

2. A biosafety cabinet according to claim 1, wherein: the support is provided with a sliding positioning rod and a threaded rod, the two adjusting rods are respectively connected with the sliding positioning rod and the threaded rod, one of the adjusting rods is in threaded connection with the threaded rod, and the bottom end of the threaded rod is rotatably connected with the support.

3. A biosafety cabinet according to claim 2, wherein: the bottom and the top of threaded rod are respectively through bearing and leg joint, and the latter half of threaded rod is provided with rotatory handle.

4. A biosafety cabinet according to claim 3, wherein: be provided with the spout on the lateral wall of holding tank, the both sides of accepting the board are provided with the slider corresponding with the spout, and the lateral wall of base is provided with the retaining groove to inside extension, should block inslot portion and be provided with and block the piece, should block the piece and can dismantle with the base and be connected.

5. A biosafety cabinet according to claim 1, wherein: the bottom of support is provided with adapting rod, overlap joint board and gyro wheel, and the up end of overlap joint board is connected with adapting rod, and its lower terminal surface is connected with the gyro wheel.

6. A biosafety cabinet according to claim 5, wherein: still be connected with firm subassembly on the overlap joint board, this firm subassembly includes movable rod, handle and firm piece, and the movable rod passes the overlap joint board bottom and is connected with firm piece, and its top is connected with the handle.

7. A biosafety cabinet according to claim 1, wherein: the massage balls are provided with a plurality of massage balls which are respectively arranged on the massage rollers.

8. A biosafety cabinet according to claim 1, wherein: buffer spring is provided with a plurality of, and its equidistant setting is being accepted between board and the holding tank bottom respectively.

9. A biosafety cabinet according to claim 4, wherein: the sliding grooves and the sliding blocks are correspondingly provided with a plurality of sliding blocks.

10. A biosafety cabinet according to claim 1, wherein: the massage roller and the adjusting rod are provided with two bearings which are respectively and symmetrically arranged between the massage roller and the adjusting rod.