CN209519591U - A kind of portable depth removal formaldehyde plant - Google Patents
A kind of portable depth removal formaldehyde plant Download PDFInfo
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- CN209519591U CN209519591U CN201920176577.6U CN201920176577U CN209519591U CN 209519591 U CN209519591 U CN 209519591U CN 201920176577 U CN201920176577 U CN 201920176577U CN 209519591 U CN209519591 U CN 209519591U
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Abstract
The utility model relates to a kind of portable depth to remove formaldehyde plant, including air pump, level-one assembly type reaction flask and second level assembly type reaction flask, the level-one assembly type reaction flask includes the first aeration reaction bottle, defoaming reaction flask and activated carbon adsorption bottle, the first reaction flask top cover is connected to the activated carbon adsorption bottle top side detachable, the first reaction flask top cover connects the second level assembly type reaction flask by second pipe.The utility model will be in the gas sucting reaction bottle to be processed of the small space such as wardrobe by air pump, by achieving the purpose that dispel formaldehyde and other pernicious gases after the series of processes such as adsorbent in bottle, pH meter is for judging adsorbent degree of saturation, it avoids wasting, have the effect of it is good dispel formaldehyde, and it is with strong points, at low cost.
Description
Technical field
The utility model relates to the technical field of air cleaning, especially a kind of portable depth removes formaldehyde plant.
Background technique
Air purifier can provide the air of sanitary safe to people, and various clarifier cleaning principles are different, cleaned
There is also differences for journey, and there are many different technologies and medium.The common purification techniques of air purifier in the market mainly includes
Adsorption technology, high efficiency filter technology, catalysis, anion, plasma technology etc., mainly active charcoal, synthesis are fine for common material
Efficient material of dimension, photocatalyst, HEAP etc., they have significantly different in cost, service life, air purification efficiency, depuration quality.
According to related assessment the results show that air purifier purifies the PM2.5 technology relative maturity in air, but its clear function of removing formaldehyde side
Face is very different, and price virtual height exaggerates the problems such as effect protrusion.
And current air purifier is designed primarily directed to larger space, and some rooms itself pollute not
Greatly, cabinet mainly is in turn resulted in since the adhesive in some inside of furniture plates newly purchased can continue slow release formaldehyde
The partial closures such as interior, drawer spatial summation, high density pollution.If directly carrying out air cleaning to entire room, not only can
It diffuses the polluted gas originally in cabinet, drawer in entire room, increases treating capacity, and its treatment effect also can be big
It gives a discount.If directly spraying these local spaces with spray, object in cabinet can be generated and be stained.
Utility model content
In view of the above-mentioned problems, the utility model provides a kind of portable depth removal formaldehyde plant, including air pump, level-one
The small space such as wardrobe gas to be processed is first sucked level-one group by air pump by assembly type reaction flask and second level assembly type reaction flask
In dress formula reaction flask, reaches after adsorbent, defoaming agent and active carbon processing in bottle and dispel formaldehyde and other harmful gas
The purpose of body, level-one assembly type reaction flask are also equipped with readable formula pH meter for judging the degree of saturation of adsorbent formaldehyde adsorption.Two
Grade assembly type reaction flask is that stand-by provision can lead to when the concentration of formaldehyde of gas to be processed is higher, belongs to high density pollution gas
Second level assembly type reaction flask will be imported by level-one assembly type reaction flask treated gas by crossing triple valve, anti-by the second aeration
It answers bottle further to remove formaldehyde, if necessary, the number of aeration reaction bottle can be increased.
The utility model is directed to the furniture newly purchased, such as the high-concentration formaldehyde gas accumulated in wardrobe, drawer, design one
The portable depth of money removes formaldehyde plant, can draw it out and individually carry out processing operation, avoid contamination gas in furniture use process
The loss of body, to increase processing difficulty.The form that purification device uses absorption and sorption to combine, and adsorbent can be by using
Person voluntarily selects to replace, and absorption processing is carried out in reaction flask using proteolysis type formaldehyde adsorbent.Device has readable formula
PH meter, for judging the adsorption saturation degree of proteolysis type methyl aldehyde adsorption material；Its principle is in formaldehyde and protolysate
Amino occur condensation reaction, generate hydroxymethyl derivative, so that pH be made to reduce.Specifically, proteolysis type formaldehyde absorbing
With formaldehyde condensation reaction can occur at room temperature for agent using the amino in protein hydrolysate --- form the hydroxyl of non-toxic stable
Methyl-derivatives, to effectively realize formaldehyde absorbing and dispel.Its adsorption cleaning ability declines even after reaction solution is in acidity
Lose suction-operated, therefore the present apparatus is furnished with readable pH meter test reaction liquid, then prompt should replace reaction in time when pH Zhi≤5-6
Reagent.
A large amount of bubbles generations are had since gas to be processed generates after being aerated, therefore are arranged above the first aeration reaction bottle
Reaction flask is defoamed, the stability of device interior air-flow can be improved.
Filler particles active carbon in activated carbon adsorption bottle, to absorb removing residue formaldehyde, while adsorb benzene, toluene, nitrogen oxides,
The pernicious gases such as sulfur oxide fully ensure that the safety of processing gas.
Preferably, second level assembly type reaction flask includes the aeration reaction bottle being detachably connected and dehumidifying reaction flask, due to warp
Cross multiple reaction flasks treated that gas humidity increases, the stability of processing gas can be guaranteed by increasing dehumidifying reaction flask.
The present apparatus is also generally applicable to liquid formaldehyde scavenger in the market, i.e. the first aeration reaction bottle, the second aeration reaction
Common liquid formaldehyde scavenger is loaded in bottle, with similar formaldehyde removal effect.
To solve this technical problem, the utility model takes following scheme:
A kind of portable depth removal formaldehyde plant, including air pump, level-one assembly type reaction flask and second level assembly type are anti-
Answer bottle, the level-one assembly type reaction flask includes the first aeration reaction bottle, defoaming reaction flask and activated carbon adsorption bottle, and described first
Aeration reaction bottle is provided with proteolysis type formaldehyde adsorbent, and the defoaming reaction flask is provided with defoaming agent, and the active carbon is inhaled
Attached bottle is provided with granular activated carbon；The air pump connects the first aeration reaction bottle, first pipe by first pipe
Road extends to inside the proteolysis type formaldehyde adsorbent, and the first pipe end connects aeration head；Described first exposes
Solid/liquid/gas reactions bottle is furnished with pH meter, to monitor the degree of saturation of the proteolysis type formaldehyde adsorbent formaldehyde adsorption；Described first exposes
Solid/liquid/gas reactions bottle sealed bottom, the bottom of the detachably connected defoaming reaction flask of the first aeration reaction top of bottle are described
Connect to defoaming reaction flask top side detachable the bottom of the activated carbon adsorption bottle, the activated carbon adsorption bottle top side detachable
The first reaction flask top cover is connected, the first reaction flask top cover connects the second level assembly type reaction flask, institute by second pipe
Second pipe is stated equipped with triple valve, is made by the triple valve through the level-one assembly type reaction flask treated gas choosing
Enter to selecting property the second level assembly type reaction flask or is expelled directly out；The second level assembly type reaction flask includes that the second aeration is anti-
Answer bottle.
Further, the air pump is small air pump, and the first pipe and/or the second pipe are rubber tube
Road.
Further, the defoaming agent is solid defoaming agent particle.
Further, the defoaming agent is adsorbed on sponge for liquid-type defoaming agent and is filled in the defoaming reaction flask,
Liquid-type defoaming agent can be the dissolved mixed solution of solid defoaming agent, and the solution after dilution agent can also be defoamed with liquid.
Further, the second level assembly type reaction flask includes that the second aeration reaction bottle and dehumidifying reaction flask form,
The two is detachably connected, desiccant-filled in the dehumidifying reaction flask, connects to the dehumidifying reaction flask top side detachable
Two reaction flask top covers, the second reaction flask top cover are equipped with gas vent.
Further, the first aeration reaction bottle, the second aeration reaction bottle, the defoaming reaction flask, the work
Property charcoal absorption bottle or the dehumidifying reaction flask be cylinder-shaped, the first aeration reaction bottle and the second aeration reaction bottle structure
Identical, the defoaming reaction flask and dehumidifying reaction bottle structure are identical, and the defoaming reaction flask base diameter is less than described the
The top diameter of one aeration reaction bottle, the activated carbon adsorption bottle base diameter are less than the top diameter of the defoaming reaction flask.
Further, the first aeration reaction top of bottle passes through the detachably connected defoaming reaction of the first connection ring
The bottom of bottle, defoaming reaction flask top pass through the bottom of the detachably connected activated carbon adsorption bottle of the second connection ring,
The activated carbon adsorption top of bottle passes through the detachably connected reaction flask top cover of third connection ring, second aeration reaction
Bottle is first connection ring, second connection ring, described by the detachably connected dehumidifying reaction flask of the 4th connection ring
Third connection ring and the 4th connection ring are equipped with through-hole.
Further, first connection ring, second connection ring, the third connection ring and the 4th connection ring
It all include round connection ontology, the connection ontology is equipped with symmetrical through-hole, the top and bottom of the connection ontology
It is separately connected first annular slot and the second annular groove, the first annular slot and second annular groove will be adjacent with snap fit
Reaction flask be removably joined together, or adjacent reaction flask and reaction flask top cover are removably joined together.
Further, described detachably connected for threaded connection.
Further, first through hole, conduit insertion described first are provided on the upper surface of the second reaction flask top cover
Through-hole exports air-flow.
The utility model is designed for small-sized confined space, with strong points；For conventional air cleaners, processing
Time is shorter, and significant effect, at low cost.It takes reaction flask to focus on mode, and Objective is strong.Lead in assembly type reaction flask
It crosses aeration to combine with absorption, reagent and the abundant dynamic Contact of formaldehyde, reaction sufficiently, it is fast, high-efficient to remove formaldehyde speed.Entirely
Device has advantage small in size, easy to carry, easy to use, not only can quickly remove the small sky of the partial closures such as wardrobe, drawer
Interior formaldehyde, moreover it is possible to which other pernicious gases are removed.
Moreover the utility model uses assembly type reaction flask, detachable use, and reagent can use market in reaction flask
General reagent, when use, are replaced in time as needed, save the cost.
Finally, aeration reaction bottle is furnished with pH meter, to monitor the saturation of the proteolysis type formaldehyde adsorbent formaldehyde adsorption
Degree avoids wasting, and saves electric energy.
Detailed description of the invention
Fig. 1 is the portable depth removal formaldehyde plant structural schematic diagram that the utility model embodiment 1 provides；
Fig. 2 is the first aeration reaction bottle front view that the utility model embodiment 1 provides；
Fig. 3 is the first aeration reaction bottle top view that the utility model embodiment 1 provides；
Fig. 4 is the defoaming reaction flask front view that the utility model embodiment 1 provides；
Fig. 5 is the defoaming reaction flask top view that the utility model embodiment 1 provides；
Fig. 6 is the first connection ring front view that the utility model embodiment 1 provides；
Fig. 7 is the first connection ring top view that the utility model embodiment 1 provides；
Fig. 8 is the first reaction flask top cover front view that the utility model embodiment 1 provides；
Fig. 9 is the portable depth removal formaldehyde plant structural schematic diagram that the utility model embodiment 2 provides.
Specific embodiment
Technical solutions of the utility model are further elaborated with reference to the accompanying drawings and examples, present embodiment can have
Different forms and it is not understood as limited to explanation set forth herein.Identical appended drawing reference represents identical always in text
Element, similar appended drawing reference represent similar element.
Embodiment 1:
With reference to Fig. 1, a kind of portable depth removal formaldehyde plant, including a small size air air pump 1, level-one assembly type reaction flask
(the first aeration reaction bottle 2, the first connection ring 31, defoaming reaction flask 4, the second connection ring 32, activated carbon adsorption bottle 5, third connection
Ring 33, the first reaction flask top cover 6, the first aeration head 7, first pipe 8), triple valve 9, second pipe 63, second level assembly type reaction
Bottle (the second aeration head 10, the second aeration reaction bottle 11, the second reaction flask top cover 13 and the 4th connection ring 34).A small size air air pump 1
It is connected by first pipe 8 with the gas access tube on the first aeration reaction bottle 2, first pipe 8 is rubber tube, gas to be processed
Body sucking first pipe 8 is discharged through the first aeration head 7, abundant with proteolysis type formaldehyde adsorbent in the first aeration reaction bottle 2
Dynamic Contact sufficiently reacts.First aeration reaction bottle 2 is furnished with pH meter (not shown in figure 1), to monitor the proteolysis type first
The degree of saturation of aldehyde adsorbent formaldehyde adsorption.
Fig. 2-Fig. 3 is the structural schematic diagram of the first aeration reaction bottle 2, and Fig. 4-Fig. 5 is the structural representation for defoaming reaction flask 4
Figure, it can be seen that the first aeration reaction bottle 2 is all cylindrical shape with defoaming reaction flask 4, wherein 2 bottom of the first aeration reaction bottle is close
Envelope, first pipe 8 protrude into inside the first aeration reaction bottle 2, and end connects the first aeration head 7, are located at proteolysis type formaldehyde and inhale
Attached dose of inside.It is equipped with bulge loop 21 at the top of first aeration reaction bottle 2, the first connection ring 31 is engaged by bulge loop 21, it is removable to realize
Connect defoaming reaction flask 4 with unloading.Second aeration reaction bottle 11 is identical as the structure of the first aeration reaction bottle 2.
Defoam filler particles shape solid defoaming agent in reaction flask 4.4 bottom opening of reaction flask is defoamed, diameter is less than first
The diameter of the top bulge loop of aeration reaction bottle 2, defoaming 4 lower circumference of reaction flask engage the first connection ring 31, and defoaming reaction flask 4 pushes up
Portion is equipped with bulge loop 41, the second connection ring 32 is engaged by bulge loop 41, to realize detachably connected activated carbon adsorption bottle 5.Activity
Charcoal absorption bottle 5 is identical as the defoaming structure of reaction flask 4, internal filler particles active carbon, bottom opening, and diameter is less than defoaming instead
The diameter of the top bulge loop of bottle 4 is answered, 5 lower circumference of activated carbon adsorption bottle engages the second connection ring 32,5 top of activated carbon adsorption bottle
Equipped with bulge loop 51, third connection ring 33 is engaged by bulge loop 51, to realize detachably connected first reaction flask top cover 6.
First connection ring 31, the second connection ring 32, third connection ring 33 are identical with 34 structure of the 4th connection ring, referring to Fig. 6-
Fig. 7, by taking the first connection ring 31 as an example comprising circle connection ontology 30, connection ontology 30 are equipped with symmetrical through-hole
300, the top and bottom for connecting ontology are separately connected first annular slot 301 and the second annular groove 302, the second annular groove 302 card
It closes on 2 top bulge loop 21 of aeration reaction bottle with matching, first annular slot card 301 closes anti-in defoaming with matching
On the lower circumference for answering bottle 4.Defoam the connection type and so between reaction flask 4 and activated carbon adsorption bottle 5.
The specific structure of first reaction flask top cover 6 is shown in Fig. 8, and bottom is equipped with bulge loop 61, to engage with matching the
Three connection rings 33, first through hole 62 is provided on upper surface, and second pipe 63 is inserted into first through hole 62 and exports air-flow.
Second pipe 63 connects triple valve 9, is made by triple valve 9 through treated the gas choosing of level-one assembly type reaction flask
Enter to selecting property second level assembly type reaction flask or is expelled directly out.Second level assembly type reaction flask includes the second aeration reaction bottle 11,
Second pipe 63 is rubber tube, is divided into two-way after connecting triple valve 9, directly exports gas all the way, extends into the second exposure all the way
Solid/liquid/gas reactions bottle 11, and end connects the second aeration head 10, the proteolysis type formaldehyde positioned at the filling of the second aeration reaction bottle 11 is inhaled
Attached dose of inside.Second aeration reaction bottle, 11 sealed bottom, top pass through detachably connected second reaction flask of the 4th connection ring 34
Top cover 13, the structure of the second reaction flask top cover 13 are identical as the first reaction flask top cover 6.
Embodiment 2:
With reference to Fig. 9, the present embodiment increases dehumidifying reaction flask 12 on the basis of embodiment 1, in second level assembly type reaction flask,
That is it by the detachably connected dehumidifying reaction flask 12 of the 5th connection ring 35 at the top of the second aeration reaction bottle 11, dehumidifies in reaction flask 12
It is desiccant-filled, pass through the detachably connected second reaction flask top cover 13 of the 4th connection ring 34 at the top of the reaction flask 12 that dehumidifies.
Since by treated the gas such as the first aeration reaction bottle 2, the second aeration reaction bottle 11, humidity increases, increase
It dehumidifies after reaction flask 12, the stability of processing gas enhances.
Embodiment 3:
A kind of portable depth removal formaldehyde plant, including a small size air air pump 1, level-one assembly type reaction flask (the first aeration
Reaction flask 2, defoaming reaction flask 4, activated carbon adsorption bottle 5, the first reaction flask top cover 6, the first aeration head 7, first pipe 8), threeway
Valve 9, second pipe 63, second level assembly type reaction flask (the second aeration head 10, the second aeration reaction bottle 11, the second reaction flask top cover
13).A small size air air pump 1 is connected by first pipe 8 with the gas access tube on the first aeration reaction bottle 2, and first pipe 8 is
Rubber tube, gas sucking first pipe 8 to be processed is discharged through the first aeration head 7, with proteolysis type in the first aeration reaction bottle 2
The abundant dynamic Contact of formaldehyde adsorbent sufficiently reacts.First aeration reaction bottle 2 is furnished with pH meter, to monitor the proteolysis type
The degree of saturation of formaldehyde adsorbent formaldehyde adsorption.
First aeration reaction bottle 2 is connected through a screw thread mode and is connected with defoaming reaction flask 4, and junction is equipped with filter screen, disappears
Filling is adsorbed with the sponge of liquid-type defoaming agent in bubble reaction flask 4, and it is dissolved that liquid-type defoaming agent can be solid defoaming agent
Mixed solution can also be defoamed the solution after dilution agent with liquid, defoam 4 bottom opening of reaction flask, filter screen accepts sponge.Disappear
It is connected through a screw thread mode at the top of bubble reaction flask 4 to be connected with activated carbon adsorption bottle 5, junction is equipped with filter screen, to accept activity
Charcoal adsorbs the active carbon particle in bottle 5.Activated carbon adsorption bottle 5 is connected through a screw thread mode and is connected with the first reaction flask top cover 6,
Bottom is equipped with bulge loop 61 and is provided with first through hole 62, second pipe on upper surface to engage third connection ring 33 with matching
63 insertion first through hole 62 export air-flow.
Second pipe 63 connects triple valve 9, is made by triple valve 9 through treated the gas choosing of level-one assembly type reaction flask
Enter to selecting property second level assembly type reaction flask or is expelled directly out.Second level assembly type reaction flask includes the second aeration reaction bottle 11,
Second pipe 63 is rubber tube, is divided into two-way after connecting triple valve 9, directly exports gas all the way, extends into the second exposure all the way
Solid/liquid/gas reactions bottle 11, and end connects the second aeration head 10, the proteolysis type formaldehyde positioned at the filling of the second aeration reaction bottle 11 is inhaled
Attached dose of inside.Second aeration reaction bottle, 11 sealed bottom, top are connected through a screw thread detachably connected second reaction flask of mode
Top cover 13, the structure of the second reaction flask top cover 13 are identical as the first reaction flask top cover 6.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are not departing from the utility model
Principle and objective in the case where above-described embodiment can be changed in the scope of the utility model, modify, replace and
Modification.
Claims (10)
1. a kind of portable depth removes formaldehyde plant, including air pump, level-one assembly type reaction flask and the reaction of second level assembly type
Bottle, the level-one assembly type reaction flask include the first aeration reaction bottle, defoaming reaction flask and activated carbon adsorption bottle, and described first exposes
Solid/liquid/gas reactions bottle is provided with proteolysis type formaldehyde adsorbent, and the defoaming reaction flask is provided with defoaming agent, the activated carbon adsorption
Bottle is provided with granular activated carbon；The air pump connects the first aeration reaction bottle, the first pipe by first pipe
It extends to inside the proteolysis type formaldehyde adsorbent, and the first pipe end connects aeration head；First aeration
Reaction flask is furnished with pH meter, to monitor the degree of saturation of the proteolysis type formaldehyde adsorbent formaldehyde adsorption；First aeration
Reaction flask sealed bottom, the bottom of the detachably connected defoaming reaction flask of the first aeration reaction top of bottle are described to disappear
The bottom for connecting to bubble reaction flask top side detachable the activated carbon adsorption bottle, connects to the activated carbon adsorption bottle top side detachable
The first reaction flask top cover is connect, the first reaction flask top cover connects the second level assembly type reaction flask by second pipe, described
Second pipe is equipped with triple valve, is made by the triple valve through the level-one assembly type reaction flask treated gas selection
Property enter and the second level assembly type reaction flask or be expelled directly out；The second level assembly type reaction flask includes the second aeration reaction
Bottle.
2. portable depth according to claim 1 removes formaldehyde plant, it is characterised in that: the air pump is small-sized gas
Pump, the first pipe and/or the second pipe are rubber tubing.
3. portable depth according to claim 1 removes formaldehyde plant, it is characterised in that: the defoaming agent disappears for solid
Infusion particle.
4. portable depth according to claim 1 removes formaldehyde plant, it is characterised in that: the defoaming agent is liquid-type
Defoaming agent, which is adsorbed on sponge, to be filled in the defoaming reaction flask.
5. portable depth according to claim 1 removes formaldehyde plant, it is characterised in that: the second level assembly type reaction
Bottle includes the second aeration reaction bottle and dehumidifying reaction flask composition, and the two is detachably connected, fills out in the dehumidifying reaction flask
Desiccant is filled, connects the second reaction flask top cover to the dehumidifying reaction flask top side detachable, the second reaction flask top cover is equipped with
Gas vent.
6. portable depth according to claim 5 removes formaldehyde plant, it is characterised in that: first aeration reaction
Bottle, the second aeration reaction bottle, the defoaming reaction flask, the activated carbon adsorption bottle or the dehumidifying reaction flask are cylinder
Shape, the first aeration reaction bottle is identical with the second aeration reaction bottle structure, and the defoaming reaction flask and the dehumidifying are anti-
Answer bottle structure identical, the defoaming reaction flask base diameter is less than the top diameter of the first aeration reaction bottle, the activity
Charcoal adsorbs the top diameter that bottle base diameter is less than the defoaming reaction flask.
7. portable depth according to claim 6 removes formaldehyde plant, it is characterised in that: the first aeration reaction bottle
By the bottom of the detachably connected defoaming reaction flask of the first connection ring, the defoaming reaction flask top passes through second at top
The bottom of the detachably connected activated carbon adsorption bottle of connection ring, the activated carbon adsorption top of bottle can by third connection ring
The reaction flask top cover is releasably connected, the second aeration reaction bottle passes through the detachably connected dehumidifying of the 4th connection ring
Reaction flask, first connection ring, second connection ring, the third connection ring and the 4th connection ring are equipped with logical
Hole.
8. portable depth according to claim 7 removes formaldehyde plant, it is characterised in that: first connection ring, institute
Stating the second connection ring, the third connection ring and the 4th connection ring all includes round connection ontology, on the connection ontology
Equipped with symmetrical through-hole, the top and bottom of the connection ontology are separately connected first annular slot and the second annular groove, institute
It states first annular slot and adjacent reaction flask is removably joined together by second annular groove with snap fit, or will
Adjacent reaction flask and reaction flask top cover is removably joined together.
9. portable depth according to claim 6 removes formaldehyde plant, it is characterised in that: described detachably connected to be
It is threadedly coupled.
10. the portable depth according to any one of claim 7-9 removes formaldehyde plant, it is characterised in that: described the
First through hole is provided on the upper surface of two reaction flask top covers, a conduit is inserted into the first through hole and exports air-flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920176577.6U CN209519591U (en) | 2019-01-31 | 2019-01-31 | A kind of portable depth removal formaldehyde plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920176577.6U CN209519591U (en) | 2019-01-31 | 2019-01-31 | A kind of portable depth removal formaldehyde plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209519591U true CN209519591U (en) | 2019-10-22 |
Family
ID=68230140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920176577.6U Active CN209519591U (en) | 2019-01-31 | 2019-01-31 | A kind of portable depth removal formaldehyde plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209519591U (en) |
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2019
- 2019-01-31 CN CN201920176577.6U patent/CN209519591U/en active Active
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