CN207103377U - A kind of special ventilation equipment in environment protection emission formula laboratory - Google Patents
A kind of special ventilation equipment in environment protection emission formula laboratory Download PDFInfo
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- CN207103377U CN207103377U CN201720703422.4U CN201720703422U CN207103377U CN 207103377 U CN207103377 U CN 207103377U CN 201720703422 U CN201720703422 U CN 201720703422U CN 207103377 U CN207103377 U CN 207103377U
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Abstract
A kind of special ventilation equipment in environment protection emission formula laboratory, belong to laboratory special equipment field.It is characterized in that：Including vent cabinet, the top of the vent cabinet sets experimental box body, and ventilation equipment are set on the top of experimental box body；The ventilation equipment include aspiration channel and inherent filtration device, one end UNICOM experiment cavity of the aspiration channel, the other end connection inherent filtration device of aspiration channel；Inherent filtration device can aspirate the gas in experiment cavity by aspiration channel；The inherent filtration device includes functional shell, and inlet air passage, air-out passage and circulation fold back passage are set in the functional shell；One end of fold back passage is circulated by selecting air bleeding valve to connect air-out passage, circulates the other end of fold back passage by selecting intake valve to connect inlet air passage；Electronic gas detection means is set in air-out passage.This equipment constitutes secondary filter by circulating the part such as fold back passage and electronic gas detection means, avoids because there is filtering situation not up to standard during equipment long-term use.
Description
Technical field
The utility model belongs to laboratory special equipment field, and in particular to a kind of special ventilation in environment protection emission formula laboratory
Equipment.
Background technology
Traditional experiment chamber ventilated cabinet is relatively simple, is provided with the supply of experiment space, air exhauster and correlation merely
Power supply auxiliary equipment.In present industrial practice, vent cabinet is one kind essential in the furniture of laboratory.The structure of vent cabinet is
There is gas exhaust piping at vertical type, its top, can install blower fan.There are deflector, circuit control soft-touch control, power outlet etc. in Over-The-Counter
, window uses safety glass, left and right or can move up and down, be operated for people.Lower cabinet has platform above using experiment side platform pattern
Face, here are cabinets, and table top can install various Media Interface Connectors.The smoke discharging structure of traditional experiment chamber ventilated cabinet is relatively simple, mainly
Main exhaust is directed it to by wall scroll or a plurality of bronchus, then by air exhauster, being finally transported to outdoor by main exhaust enters
Row discharge.For this, inventor, which designs set of device, can save substantial amounts of pipeline construction, and the manufacturing cost on the one hand saved is another
The aspect device directly can indoors be discharged by gas after treatment, avoid experimental gas and be discharged into outdoor
The environmental pollution brought.
The content of the invention
Technical problem to be solved in the utility model is to provide a kind of special ventilation equipment in environment protection emission formula laboratory, can
To be filtered and be purified gas in exhaust duct above vent cabinet, directly emit, avoid experimental gas from polluting air
Environment.
In order to solve the above technical problems, the technical solution of the utility model is：It is special to provide a kind of environment protection emission formula laboratory
With ventilation equipment, it is characterised in that：Including vent cabinet, the top of the vent cabinet sets experimental box body, in the experimental box body
Experiment cavity is set, ventilation equipment are set on the top of experimental box body；The ventilation equipment include aspiration channel and inherent filtration device,
One end UNICOM experiment cavity of the aspiration channel, the other end connection inherent filtration device of aspiration channel；Inherent filtration device can pass through
Gas in aspiration channel suction experiment cavity；The inherent filtration device includes functional shell, and inlet air is set in the functional shell
Passage, air-out passage and circulation fold back passage；One end of fold back passage is circulated by selecting air bleeding valve to connect air-out passage, circulation
The other end of fold back passage is by selecting intake valve to connect inlet air passage；Electronic gas detection means is set in air-out passage,
When electronic gas detection means detects that the qualitative data of the air-flow in air-out passage meets preset value, air bleeding valve is selected to make gas
Stream is discharged from air-out passage, when the mass figures that electronic gas detection means is detected in air-out passage are not up to preset value,
Selection air bleeding valve makes air-flow re-start filtering into inlet air passage from circulation reentrant pathway.
Preferably, the selection air bleeding valve includes mounting rod, and the mounting rod is arranged in air-out passage, the mounting rod
The first valve plate of upper setting, the first valve plate pushing meanss, the second valve plate and the second valve plate pushing meanss；First valve plate promotes dress
Putting can promote the first valve plate to close air-out passage, and the second valve plate pushing meanss can promote the second valve plate closed circulation fold back to lead to
The entrance in road.
Preferably, the selection intake valve includes installation dividing plate, and inlet air passage is separated into first by the installation dividing plate
Branch pipe and the second branch pipe, the middle part of installation rotational valve plate is hinged on installation dividing plate；There is air-flow to enter from circulation reentrant pathway
When in inlet air passage, air-flow promotes rotary valve plate to rotate, while the first branch pipe is opened in the side of rotational valve plate, rotational valve plate
Opposite side closes the second branch pipe.
Preferably, the inherent filtration device also includes air inducing chamber, sedimentation pipeline, cooling liquid filter chamber, water conservancy diversion diffusion admittance, filter
Cotton filter chamber, neutralize filter chamber, activated carbon filter chamber and lime particle filter chamber, inlet air passage, air inducing chamber, sedimentation pipeline, drop
Warm liquid filter chamber, water conservancy diversion diffusion admittance, filter pulp filter chamber, neutralization filter chamber, activated carbon filter chamber, lime particle filter chamber and air-out
Passage is arranged in functional shell；Filter pulp device and tubaeform airflow commutating device are set in the filter pulp filter chamber；
Wherein, the lower end connection aspiration channel of inlet air passage, the upper end connection air inducing chamber of inlet air passage；
Air inlet and air outlet are set on the air inducing chamber, air inducing wheel is set in air inducing intracavitary, the air inlet of air inducing chamber connects
Access wind passage, the upper end of the air outlet connection sedimentation pipeline of air inducing chamber；The lower end insertion cooling liquid filter chamber of the sedimentation pipeline
Bottom；
The lower end of the top UNICOM water conservancy diversion diffusion admittance of the cooling liquid filter chamber, the upper end connection loudspeaker of water conservancy diversion diffusion admittance
Shape airflow commutating device, rectification screen cloth is set, if being set on rectification screen cloth at the horn mouth of the tubaeform airflow commutating device
Dry rectification stomata；The front of rectification screen cloth and the filtering web of filter pulp device is oppositely arranged；Plane and mistake where rectification screen cloth
Plane where filter pulp net is parallel to each other and at intervals of 1-2cm；
In the bottom UNICOM of filter pulp filter chamber and filter chamber top, neutralize the bottom UNICOM activated carbon filter chamber of filter chamber
Top, the bottom of the bottom UNICOM lime particle filter chamber of activated carbon filter chamber, the top UNICOM of lime particle filter chamber goes out
Wind passage.
Preferably, more than three groups of water conservancy diversion swing arm set, the water conservancy diversion pendulum are vertically arranged along air intake direction in inlet air passage
Arm group includes at least two water conservancy diversion swing arms, and the setting height(from bottom) of the water conservancy diversion swing arm in each water conservancy diversion swing arm set is identical；Water conservancy diversion swing arm is led to
Cross positioned on more than two cowling panels are set between inlet air passage and air inducing chamber, rectification hole is opened up on the cowling panel；It is described whole
The aperture of discharge orifice is 2-3mm.
Preferably, the body of the sedimentation pipeline and water conservancy diversion diffusion admittance turns including at least the bending at a 90-120 degree angle
Angle.
Preferably, " returning " font or spiral shape hydrojet coil pipe are set in the neutralization filter chamber, set on the hydrojet coil pipe
Hydrojet micropore is put, the aperture of the hydrojet micropore is 0.1-0.3mm；The liquid feeding end of hydrojet coil pipe is connected by neutralizer liquid feeding pump
Neutralising fluid storehouse, the neutralising fluid in neutralising fluid storehouse can be neutralized in liquid liquid feeding pump suction hydrojet coil pipe, and passes through hydrojet
Micropore sprays；Bottom with filter chamber in sets liquid storage tank.
Preferably, the filter pulp device also includes filter pulp elastic retainers, and it is solid that the filtering web is arranged on filter pulp elasticity
Determine on device；Filter pulp elastic retainers include fixator cylinder, and fixator cylinder open at one end simultaneously sets block, fixator cylinder
The other end is closed, and sets extension spring in fixator cylinder, and one end of extension spring is connected the blind end bottom of device cylinder, extension spring
The other end connects expansion plate, and expansion plate is arranged in fixator cylinder and stopped by block, and screw hole, mistake are installed on expansion plate
The edge of the filter pulp net device cylinder that is fastened is fixed on expansion plate after one week by tensioner screw.
Compared with prior art, the beneficial effects of the utility model are：
Vent cabinet described in the utility model, is not only able to provide more easily experiment condition, and can also more section
Rational processing flue gas is learned, makes experimentation more safely controllable, practical environment protection.Device is by circulating fold back passage
Constitute, the secondary filter of gas not up to standard, avoid because occurring during equipment long-term use with parts such as electronic gas detection means
Filtering situation not up to standard.The setting has ensured the in line purpose of this equipment environment protection standard, on the one hand reduces the peace of the equipment
This is dressed up, has on the other hand eliminated pollution of the discharge to atmospheric environment outside experimental gas room.This patent is novel in design, and structure is skilful
It is wonderful, it is particularly suitable for promoting the use of.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of inherent filtration device；
Fig. 3 is Fig. 2 A portions partial enlarged drawing；
Fig. 4 is Fig. 2 B portions partial enlarged drawing；
In figure：
1st, inherent filtration device；1.1st, functional shell；1.2nd, web is filtered；1.3rd, tubaeform airflow commutating device；1.4th, spray
Liquid coil pipe；1.5th, lime particle filter chamber；1.6th, activated carbon filter chamber；1.7th, cool liquid filter chamber；1.8th, fold back passage is circulated；
1.9th, inlet air passage；1.10, rotational valve plate；1.11st, the first branch pipe；The 1.12nd, dividing plate is installed；1.13rd, the second branch pipe；1.14, it is whole
Flowing plate；1.15th, air inducing chamber；1.16th, air inducing wheel；1.17th, pipeline is settled；1.18th, water conservancy diversion diffusion admittance；1.19, extension spring；1.20、
Fixator cylinder；1.21, expansion plate；1.22nd, tensioner screw；1.23, air-out passage；1.24th, electronic gas detection means；
1.25, mounting rod；1.26th, the first valve plate；1.27th, the second valve plate；
2nd, aspiration channel；
3rd, cavity is tested；
4th, experimental facilities storage space.
Embodiment
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of special ventilation equipment in environment protection emission formula laboratory, including vent cabinet, the vent cabinet it is upper
Portion sets experimental box body, and experiment cavity is set in the experimental box body, and ventilation equipment are set on the top of experimental box body；Testing
The bottom of casing sets experimental facilities storage space.
The ventilation equipment include aspiration channel and inherent filtration device, one end UNICOM experiment cavity of the aspiration channel, air draught
The other end connection inherent filtration device of pipe；Inherent filtration device can aspirate the gas in experiment cavity by aspiration channel；This design
In the case where reservation original equipment function is constant, experimental gas collection will be carried out first originally, then again lead to Duo Tai laboratories
Experimental gas in wind cabinet is converged, and experimental gas is conveyed into the indoor side of discharge finally by the transfer pipeline of equivalent length
Formula is changed into, and ventilation hoods for laboratories directly is carried out into the indoor in line of the individual of separate single one, on the one hand reduces the equipment
Installation cost, pollution of the discharge to atmospheric environment outside experimental gas room is on the other hand eliminated.
As shown in Fig. 2 the inherent filtration device includes functional shell, inlet air passage, air-out are set in the functional shell
Passage and circulation fold back passage；One end of fold back passage is circulated by selecting air bleeding valve to connect air-out passage, circulates fold back passage
The other end by select intake valve connect inlet air passage；Electronic gas detection means is set in air-out passage, works as electron gas
When body detection means detects that the qualitative data of the air-flow in air-out passage meets preset value, air bleeding valve is selected to make air-flow from air-out
Passage is discharged, when the mass figures that electronic gas detection means is detected in air-out passage are not up to preset value, selection exhaust
Valve makes air-flow re-start filtering into inlet air passage from circulation reentrant pathway.
As shown in figure 4, the selection air bleeding valve includes mounting rod, the mounting rod is arranged in air-out passage, the peace
The first valve plate, the first valve plate pushing meanss, the second valve plate and the second valve plate pushing meanss are set on dress bar；First valve plate pushes away
Dynamic device can promote the first valve plate to close air-out passage, and the second valve plate pushing meanss can promote the second valve plate closed circulation to return
Roll over the entrance of passage.By the control of the first valve plate and the second valve plate, to realize gas up to standard and the switching discharge of non-conforming gas,
Purpose is that the in line gas out of slave unit has met Standard.
The selection intake valve includes installation dividing plate, and the installation dividing plate is separated into the first branch pipe and the by inlet air passage
Two branch pipes, the middle part of installation rotational valve plate is hinged on installation dividing plate；There is air-flow to enter inlet air passage from circulation reentrant pathway
When middle, air-flow promotes rotary valve plate to rotate, while the first branch pipe is opened in the side of rotational valve plate, another side seal of rotational valve plate
Close the second branch pipe.
Spread and lead to as shown in Fig. 2 the inherent filtration device also includes air inducing chamber, sedimentation pipeline, cooling liquid filter chamber, water conservancy diversion
Road, filter pulp filter chamber, neutralize filter chamber, activated carbon filter chamber and lime particle filter chamber, inlet air passage, air inducing chamber, sedimentation pipe
Road, cooling liquid filter chamber, water conservancy diversion diffusion admittance, filter pulp filter chamber, neutralization filter chamber, activated carbon filter chamber, lime particle filter chamber
It is arranged on air-out passage in functional shell；Filter pulp device and tubaeform airflow commutating device are set in the filter pulp filter chamber；
Wherein, the lower end connection aspiration channel of inlet air passage, the upper end connection air inducing chamber of inlet air passage；Air inlet is set on the air inducing chamber
And air outlet, air inducing wheel, the air inlet connection inlet air passage of air inducing chamber are set in air inducing intracavitary, the air outlet connection of air inducing chamber is sunk
The upper end of pipeline drops；The bottom of the lower end insertion cooling liquid filter chamber of the sedimentation pipeline；The top UNICOM of the cooling liquid filter chamber
The lower end of water conservancy diversion diffusion admittance, the upper end of water conservancy diversion diffusion admittance connect tubaeform airflow commutating device, and the tubaeform air-flow is whole
Flow and rectification screen cloth is set at the horn mouth of device, several rectification stomatas are set on rectification screen cloth；Rectification screen cloth and filter pulp device
The front of filtering web be oppositely arranged；Plane where rectification screen cloth is parallel to each other and at intervals of 1- with plane where filtering web
2cm；In the bottom UNICOM of filter pulp filter chamber and filter chamber top, neutralize filter chamber bottom UNICOM activated carbon filter chamber it is upper
Portion, the bottom of the bottom UNICOM lime particle filter chamber of activated carbon filter chamber, the top UNICOM air-out of lime particle filter chamber are led to
Road.General mood hole is opened up on mounting rod；More than two cowling panels are set between inlet air passage and air inducing chamber, on the cowling panel
Open up rectification hole；The aperture of the rectification hole is 2-3mm.The body of the sedimentation pipeline and water conservancy diversion diffusion admittance comprises at least one
The bending turning at individual 90-120 degree angle." returning " font or spiral shape hydrojet coil pipe, the hydrojet are set in the neutralization filter chamber
Hydrojet micropore is set on coil pipe, and the aperture of the hydrojet micropore is 0.1-0.3mm；The liquid feeding end of hydrojet coil pipe is entered by neutralizer
Liquid pump connection neutralising fluid storehouse, the neutralising fluid in neutralising fluid storehouse can be neutralized in liquid liquid feeding pump suction hydrojet coil pipe, and
Sprayed by hydrojet micropore；In and the bottom of filter chamber sets liquid storage tank, and " returning " word-lifting formula has ensured hydrojet and gas
It is sufficiently mixed.
As shown in figure 3, the filter pulp device also includes filter pulp elastic retainers, the filtering web is arranged on filter pulp elasticity
On fixator；Filter pulp elastic retainers include fixator cylinder, and fixator cylinder open at one end simultaneously sets block, fixator cylinder
Other end closing, extension spring is set in fixator cylinder, and one end of extension spring is connected the blind end bottom of device cylinder, extension spring
Other end connection expansion plate, expansion plate is arranged in fixator cylinder and stopped by block, and screw hole is installed on expansion plate,
The edge device cylinder that is fastened of filtering web is fixed on expansion plate after one week by tensioner screw.This structure can cause
Filter pulp net realizes the bending elasticity of filtering surface, and can be directed to whereby with realization can under the conditions of different pressure or different throughputs
Very good completion filtration operation.
It is described above, only it is preferred embodiment of the present utility model, is not that other forms are made to the utility model
Limitation, any person skilled in the art is changed or is modified as possibly also with the technology contents of the disclosure above equivalent
The equivalent embodiment of change.It is every without departing from the content of the technical scheme of the utility model, according to the technical essence of the utility model pair
Any simple modification, equivalent variations and the remodeling that above example is made, still fall within the protection model of technical solutions of the utility model
Enclose.
Claims (8)
- A kind of 1. special ventilation equipment in environment protection emission formula laboratory, it is characterised in that：Including vent cabinet, the top of the vent cabinet Experimental box body is set, experiment cavity is set in the experimental box body, ventilation equipment are set on the top of experimental box body；The ventilation Equipment includes aspiration channel and inherent filtration device, and one end UNICOM experiment cavity of the aspiration channel, the other end connection of aspiration channel is certainly Filter；Inherent filtration device can aspirate the gas in experiment cavity by aspiration channel；The inherent filtration device includes functional shell, and inlet air passage, air-out passage and circulation fold back are set in the functional shell Passage；One end of fold back passage is circulated by selecting air bleeding valve to connect air-out passage, the other end of circulation fold back passage passes through choosing Select intake valve connection inlet air passage；Electronic gas detection means is set in air-out passage, when electronic gas detection means detects When the qualitative data of air-flow in air-out passage meets preset value, select air bleeding valve to make air-flow be discharged from air-out passage, work as electricity When sub- gas-detecting device detects that the mass figures in air-out passage are not up to preset value, air bleeding valve is selected to make air-flow from circulation Reentrant pathway re-starts filtering into inlet air passage.
- 2. according to a kind of special ventilation equipment in environment protection emission formula laboratory described in claim 1, it is characterised in that：The selection Air bleeding valve includes mounting rod, and the mounting rod is arranged in air-out passage, and the first valve plate, the first valve plate are set on the mounting rod Pushing meanss, the second valve plate and the second valve plate pushing meanss；The first valve plate pushing meanss can promote the first valve plate to close Air-out passage, the second valve plate pushing meanss can promote the entrance of the second valve plate closed circulation fold back passage.
- 3. according to a kind of special ventilation equipment in environment protection emission formula laboratory described in claim 2, it is characterised in that：The selection Intake valve include installation dividing plate, it is described installation dividing plate inlet air passage is separated into the first branch pipe and the second branch pipe, installation every The middle part of installation rotational valve plate is hinged on plate；Have air-flow from circulation reentrant pathway in enter inlet air passage in when, air-flow promote rotation Rotary valve plate rotates, and while the first branch pipe is opened in the side of rotational valve plate, the opposite side of rotational valve plate closes the second branch pipe.
- 4. according to a kind of special ventilation equipment in environment protection emission formula laboratory described in claim 3, it is characterised in that：It is described from mistake Filtering device also includes air inducing chamber, sedimentation pipeline, cooling liquid filter chamber, water conservancy diversion diffusion admittance, filter pulp filter chamber, neutralization filter chamber, work Property charcoal filter chamber and lime particle filter chamber, inlet air passage, air inducing chamber, sedimentation pipeline, cooling liquid filter chamber, water conservancy diversion diffusion admittance, Filter pulp filter chamber, neutralization filter chamber, activated carbon filter chamber, lime particle filter chamber and air-out passage are arranged in functional shell； Filter pulp device and tubaeform airflow commutating device are set in the filter pulp filter chamber；Wherein, the lower end connection aspiration channel of inlet air passage, the upper end connection air inducing chamber of inlet air passage；Air inlet and air outlet are set on the air inducing chamber, air inducing wheel is set in air inducing intracavitary, the air inlet of air inducing chamber connect into Wind passage, the upper end of the air outlet connection sedimentation pipeline of air inducing chamber；The bottom of the lower end insertion cooling liquid filter chamber of the sedimentation pipeline Portion；The lower end of the top UNICOM water conservancy diversion diffusion admittance of the cooling liquid filter chamber, the upper end of water conservancy diversion diffusion admittance connect tubaeform gas Fairing is flowed, rectification screen cloth is set at the horn mouth of the tubaeform airflow commutating device, several are set on rectification screen cloth Rectification stomata；The front of rectification screen cloth and the filtering web of filter pulp device is oppositely arranged；Plane and filter cotton where rectification screen cloth Plane where net is parallel to each other and at intervals of 1-2cm；In the bottom UNICOM of filter pulp filter chamber and filter chamber top, neutralize filter chamber bottom UNICOM activated carbon filter chamber it is upper Portion, the bottom of the bottom UNICOM lime particle filter chamber of activated carbon filter chamber, the top UNICOM air-out of lime particle filter chamber are led to Road.
- 5. according to a kind of special ventilation equipment in environment protection emission formula laboratory described in claim 4, it is characterised in that：Lead in inlet air More than three groups of water conservancy diversion swing arm set is vertically arranged along air intake direction in road, the water conservancy diversion swing arm set includes at least two water conservancy diversion pendulum Arm, the setting height(from bottom) of the water conservancy diversion swing arm in each water conservancy diversion swing arm set are identical；Water conservancy diversion swing arm passes through positioned on inlet air passage and air inducing chamber Between more than two cowling panels are set, open up rectification hole on the cowling panel；The aperture of the rectification hole is 2-3mm.
- 6. according to a kind of special ventilation equipment in environment protection emission formula laboratory described in claim 5, it is characterised in that：The sedimentation The body of pipeline and water conservancy diversion diffusion admittance comprises at least the bending turning at a 90-120 degree angle.
- 7. according to a kind of special ventilation equipment in environment protection emission formula laboratory described in claim 6, it is characterised in that：The neutralization " returning " font or spiral shape hydrojet coil pipe are set in filter chamber, hydrojet micropore, the hydrojet micropore are set on the hydrojet coil pipe Aperture be 0.1-0.3mm；The liquid feeding end of hydrojet coil pipe connects neutralising fluid storehouse by neutralizer liquid feeding pump, in neutralising fluid storehouse Neutralising fluid can be neutralized in liquid liquid feeding pump suction hydrojet coil pipe, and sprayed by hydrojet micropore；In and filter chamber Bottom sets liquid storage tank.
- 8. according to a kind of special ventilation equipment in environment protection emission formula laboratory described in claim 7, it is characterised in that：The filter pulp Device also includes filter pulp elastic retainers, and the filtering web is arranged in filter pulp elastic retainers；Filter pulp elastic retainers bag Fixator cylinder is included, fixator cylinder open at one end simultaneously sets block, the other end closing of fixator cylinder, in fixator cylinder Interior setting extension spring, one end of extension spring are connected the blind end bottom of device cylinder, the other end connection expansion plate of extension spring, expansion plate It is arranged in fixator cylinder and is stopped by block, screw hole is installed on expansion plate, the edge for filtering web is fastened device Cylinder is fixed on expansion plate after one week by tensioner screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720703422.4U CN207103377U (en) | 2017-06-16 | 2017-06-16 | A kind of special ventilation equipment in environment protection emission formula laboratory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720703422.4U CN207103377U (en) | 2017-06-16 | 2017-06-16 | A kind of special ventilation equipment in environment protection emission formula laboratory |
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| Publication Number | Publication Date |
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| CN207103377U true CN207103377U (en) | 2018-03-16 |
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ID=61577356
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720703422.4U Active CN207103377U (en) | 2017-06-16 | 2017-06-16 | A kind of special ventilation equipment in environment protection emission formula laboratory |
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| CN (1) | CN207103377U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114871234A (en) * | 2022-05-23 | 2022-08-09 | 华北电力大学（保定） | Movable biological safety type air exhaust efficient filtering device |
-
2017
- 2017-06-16 CN CN201720703422.4U patent/CN207103377U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114871234A (en) * | 2022-05-23 | 2022-08-09 | 华北电力大学（保定） | Movable biological safety type air exhaust efficient filtering device |
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