CN220177812U - Anti-turbulence layered fume hood - Google Patents
Anti-turbulence layered fume hood Download PDFInfo
- Publication number
- CN220177812U CN220177812U CN202321475312.9U CN202321475312U CN220177812U CN 220177812 U CN220177812 U CN 220177812U CN 202321475312 U CN202321475312 U CN 202321475312U CN 220177812 U CN220177812 U CN 220177812U
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- Prior art keywords
- guide plate
- layer guide
- cabinet body
- turbulence
- exhaust
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- 239000003517 fume Substances 0.000 title claims abstract description 24
- 239000010410 layer Substances 0.000 claims abstract description 71
- 239000007789 gas Substances 0.000 claims abstract description 23
- 239000011229 interlayer Substances 0.000 claims abstract description 15
- 239000011148 porous material Substances 0.000 claims description 15
- 239000011521 glass Substances 0.000 claims description 3
- 239000002912 waste gas Substances 0.000 description 9
- 238000002474 experimental method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 231100000481 chemical toxicant Toxicity 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003440 toxic substance Substances 0.000 description 2
- 241001465382 Physalis alkekengi Species 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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- Devices For Use In Laboratory Experiments (AREA)
Abstract
The utility model relates to the field of fume hoods and discloses an anti-turbulence layered fume hood which comprises a hood body, wherein a back plate is vertically arranged in the hood body, an exhaust interlayer is formed between the back plate and the hood body, a top layer guide plate, a middle layer guide plate and a bottom layer guide plate are sequentially arranged on one side of the back plate, which is close to the hood body, from top to bottom, a clamping piece for fixing the middle layer guide plate is processed in the middle of the back plate, positioning pieces for limiting the top layer guide plate and the bottom layer guide plate are respectively arranged at the bottom of the top of the hood body, the top layer guide plate and the bottom layer guide plate are arranged between the clamping pieces and the positioning pieces, a gas collecting cover is arranged at the top of the hood body between the positioning pieces and the exhaust interlayer, an exhaust pipe is connected to the gas collecting cover, and a lamp for lighting is arranged at the top of the hood body below the gas collecting cover. The utility model can be suitable for exhausting gases with different specific weights by matching the exhaust interlayer with the top layer guide plate, the middle layer guide plate and the bottom layer guide plate, and the guide plate can effectively avoid the conditions of turbulence or vortex and the like in the experimental range of the cabinet body.
Description
Technical Field
The utility model relates to the field of fume hoods, in particular to an anti-turbulence layered fume hood.
Background
The fume hood is a first-level barrier for protecting laboratory personnel from toxic chemical fume in the laboratory, and the principle of the fume hood is that the air in the fume hood is sucked out by an exhaust pipe to be in a negative pressure state, so that toxic chemical fume is prevented from flowing into the laboratory to endanger the safety of the laboratory personnel. The existing fume hood is easy to generate turbulence or vortex in the hood body during exhaust, and most of exhaust is exhausted from the top of the hood body, so that the larger exhaust cannot be effectively exhausted, and potential safety hazards exist.
Disclosure of Invention
The utility model aims to provide an anti-turbulence layered fume hood, which adopts a multi-layer design, can exhaust air from the upper layer, the middle layer or/and the lower layer of the fume hood according to the needs so as to meet the needs of different laboratories, and can effectively solve the problem of turbulence or vortex in the fume hood.
The utility model aims at realizing the following technical scheme:
the utility model provides an anti-turbulence's layering fume hood, includes the cabinet body, the internal backplate that vertically installs of cabinet constitutes the exhaust intermediate layer between backplate and the cabinet body, the backplate is close to the internal one side of cabinet and installs top layer guide plate, middle level guide plate and bottom guide plate down in proper order from last, and backplate middle part processing has the joint spare of fixed middle level guide plate, cabinet body top bottom is equipped with the locating piece spacing to top layer guide plate and bottom guide plate respectively, and top layer guide plate and bottom guide plate are installed between joint spare and locating piece, the gas collecting channel is installed at cabinet body top between locating piece and the exhaust intermediate layer, is connected with the blast pipe on the gas collecting channel, the lamps and lanterns that are used for the illumination are installed at cabinet body top below the gas collecting channel, cabinet body opposite side is equipped with the glass window relative with the backplate.
The clamping piece is provided with a plurality of positioning notches, and the inclination angles of the middle-layer guide plates can be adjusted by the positioning notches.
The back plate is provided with pore plates corresponding to the areas of the top layer guide plate, the middle layer guide plate and the bottom layer guide plate, the pore diameters of the pore plates are sequentially increased from top to bottom, and the pore plates are provided with openable shutter baffles.
And a through hole communicated with the exhaust interlayer is processed on the cabinet body below the bottom layer guide plate.
And access doors are machined on the side walls of the two sides of the cabinet body.
The anti-turbulence layered fume hood provided by the utility model has the beneficial effects that:
(1) The back plate is arranged in the cabinet body, an exhaust interlayer is formed between the back plate and the cabinet body, and the top-layer guide plate, the middle-layer guide plate and the bottom-layer guide plate are matched, so that the cabinet can be suitable for exhausting gases with different specific weights, and under the action of the top-layer guide plate, the middle-layer guide plate and the bottom-layer guide plate, the conditions of turbulence or vortex and the like in the experimental range of the cabinet body can be effectively avoided;
(2) The porous plate and the shutter baffle for shielding the porous plate are arranged on the back plate, so that the ventilation quantity at different positions can be adjusted according to experimental reaction, the exhaust effect of waste gas is ensured, and meanwhile, the flow velocity of the waste gas at one end far away from the gas collecting hood can be ensured through the porous plates with different pore diameters;
(3) Through processing the through-hole on the cabinet body of exhaust intermediate layer below, utilize the through-hole can keep away from gas collecting channel one end at the exhaust intermediate layer and send into the air to guarantee the normal flow of air, reduce the waste gas residue in the exhaust intermediate layer.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram provided in an embodiment of the present utility model.
Fig. 2 is a schematic structural diagram of a back plate according to an embodiment of the present utility model.
Reference numerals: 1. a cabinet body; 2. a back plate; 21. an orifice plate; 22. a shutter baffle; 3. a top layer deflector; 4. a middle layer guide plate; 5. a bottom deflector; 6. a clamping piece; 7. a positioning piece; 8. a gas collecting hood; 9. an exhaust pipe; 10. a lamp; 11. a glass window; 12. an access door; 13. and a through hole.
Detailed Description
Examples
As shown in fig. 1, the anti-turbulence layered fume hood provided in this embodiment includes a hood body 1, vertically install backplate 2 in the hood body 1, constitute exhaust intermediate layer between backplate 2 and the hood body 1, exhaust intermediate layer is the transfer passage of waste gas, can avoid waste gas to stay in experimental region, thereby guarantee the safety of experiment, backplate 2 is close to in the hood body 1 one side from last top down install top layer guide plate 3, middle layer guide plate 4 and bottom guide plate 5 in proper order, top layer guide plate 3, middle layer guide plate 4 and bottom guide plate 5 are used for shunting waste gas, so as to avoid waste gas to produce turbulent flow or vortex phenomenon in experimental region, backplate 2 middle processing has joint spare 6 of fixed middle layer guide plate 4, be equipped with a plurality of location breach on joint spare 6, the inclination of a plurality of location breach adjustable middle layer guide plate 4, cabinet body 1 top second bottom is equipped with respectively and is spacing setting a location spare 7 to top layer guide plate 3 and bottom layer guide plate 5, and top layer guide plate 5 install between joint spare 6 and setting spare 7, and can make top layer guide plate 5 and the exhaust pipe 8 that the top side is equipped with the exhaust pipe 8 is installed to the opposite side of the hood body 1, and the exhaust pipe 8 is equipped with the exhaust pipe 8 is concentrated in the opposite side of the hood body 1, and the exhaust pipe 8 is equipped with the top of the exhaust pipe 8 is installed to the top of the air-down in the hood body 1.
In order to ensure that the gas suction between each layer of guide plates is consistent, as shown in fig. 2, the back plate 2 is provided with the pore plates 21 corresponding to the areas of the top layer of guide plates 3, the middle layer of guide plates 4 and the bottom layer of guide plates 5, and the pore diameters of the pore plates 21 are sequentially increased from top to bottom, so that the air flow rate of each pore plate 21 is in a relatively stable state, the suction is consistent, under special experimental conditions, the pore plates 21 are provided with openable shutter plates 22 for adjusting experimental environments, and the pore plates 21 at corresponding positions can be blocked by the shutter plates 22 so as to cope with different experiments.
In order to prevent the exhaust gas from staying in the exhaust interlayer, the through holes 13 communicated with the exhaust interlayer are processed on the cabinet body 1 below the bottom guide plate 5, and the through holes 13 can provide a small amount of air for the exhaust interlayer, so that the exhaust gas can flow to the exhaust pipe 9 along with the air, and the aperture of the through holes 13 is not too large or the suction force to the exhaust gas can be influenced.
In order to facilitate maintenance of the fume hood, the side walls of the two sides of the cabinet body 1 are provided with access doors 12, and the cabinet body 1 and the system pipeline configuration can be conveniently maintained and maintained through the access doors 12.
The application method of the utility model is as follows:
when the device is used, according to the experimental requirements, the shutter baffle 22 is opened, air in the cabinet body 1 is sucked out through the exhaust pipe 9, then an experiment is started, in the experimental process, light-specific-gravity gas flows upwards from the top-layer guide plate 3 to the exhaust interlayer, normal-specific-gravity gas flows from the middle-layer road side to the exhaust interlayer, heavy-gravity gas flows from the bottom-layer guide plate 5 to the exhaust interlayer, flows to the gas collecting cover 8 along the exhaust interlayer, and finally is discharged from the exhaust pipe 9; for experiments with special requirements, the shutter 22 can be closed in position to leave the exhaust gases in the cabinet 1. In the flowing process of the waste gas, the top-layer guide plate 3, the middle-layer guide plate 4 and the bottom-layer guide plate 5 can split the waste gas so as to avoid turbulence or vortex in an experimental area from influencing the accuracy of the experiment.
The foregoing is merely a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any modification and substitution based on the technical scheme and the inventive concept provided by the present utility model should be covered in the scope of the present utility model. It should be noted that the structures or components illustrated in the drawings are not necessarily drawn to scale, and that descriptions of well-known components and processing techniques and procedures are omitted so as not to unnecessarily limit the present utility model.
Claims (5)
1. The utility model provides an anti-turbulence's layering fume hood, includes the cabinet body, its characterized in that: the cabinet is characterized in that a back plate is vertically arranged in the cabinet body, an exhaust interlayer is formed between the back plate and the cabinet body, a top layer guide plate, a middle layer guide plate and a bottom layer guide plate are sequentially arranged on one side of the back plate, close to the cabinet body, from top to bottom, a clamping piece for fixing the middle layer guide plate is machined in the middle of the back plate, locating pieces for limiting the top layer guide plate and the bottom layer guide plate are respectively arranged at the bottom of the top of the cabinet body, the top layer guide plate and the bottom layer guide plate are arranged between the clamping piece and the locating pieces, a gas collecting cover is arranged at the top of the cabinet body between the locating pieces and the exhaust interlayer, an exhaust pipe is connected to the gas collecting cover, a lamp for lighting is arranged at the top of the cabinet body below the gas collecting cover, and a glass window opposite to the back plate is arranged on the other side of the cabinet body.
2. The anti-turbulence, layered fume hood of claim 1, wherein: the clamping piece is provided with a plurality of positioning notches, and the inclination angles of the middle-layer guide plates can be adjusted by the positioning notches.
3. The anti-turbulence, layered fume hood of claim 1, wherein: the back plate is provided with pore plates corresponding to the areas of the top layer guide plate, the middle layer guide plate and the bottom layer guide plate, the pore diameters of the pore plates are sequentially increased from top to bottom, and the pore plates are provided with openable shutter baffles.
4. The anti-turbulence, layered fume hood of claim 1, wherein: and a through hole communicated with the exhaust interlayer is processed on the cabinet body below the bottom layer guide plate.
5. The anti-turbulence, layered fume hood of claim 1, wherein: and access doors are machined on the side walls of the two sides of the cabinet body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321475312.9U CN220177812U (en) | 2023-06-12 | 2023-06-12 | Anti-turbulence layered fume hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321475312.9U CN220177812U (en) | 2023-06-12 | 2023-06-12 | Anti-turbulence layered fume hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220177812U true CN220177812U (en) | 2023-12-15 |
Family
ID=89103184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321475312.9U Active CN220177812U (en) | 2023-06-12 | 2023-06-12 | Anti-turbulence layered fume hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220177812U (en) |
-
2023
- 2023-06-12 CN CN202321475312.9U patent/CN220177812U/en active Active
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