CN217887420U - Be used for floor type to breed house ventilation deodorizing device - Google Patents
Be used for floor type to breed house ventilation deodorizing device Download PDFInfo
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- CN217887420U CN217887420U CN202221152594.4U CN202221152594U CN217887420U CN 217887420 U CN217887420 U CN 217887420U CN 202221152594 U CN202221152594 U CN 202221152594U CN 217887420 U CN217887420 U CN 217887420U
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Abstract
The utility model discloses a ventilation and deodorization device for a floor type breeding house, which comprises a filter material spraying and dust removing device, a hypochlorous acid atomizing and deodorization device and a matching device, wherein the filter material is arranged at a fan port of the breeding house for front spraying and removing particles; the wind-shield wall is arranged outside the deodorization room, and hypochlorous acid spray is horizontally arranged between the outer wall and the wind-shield wall to form an atomization deodorization room and enhance the deodorization effect. A circulating water tank is arranged below the atomization tank and used for collecting the falling hypochlorous acid fog drops; the water collecting tank is arranged below the filter material and used for collecting sprayed water of the filter material, and the sprayed water flows back to the circulating water tank for spraying and recycling, so that the operating cost of deodorization is greatly reduced; the utility model is suitable for an adopt mechanical ventilation mode's floor formula breed house. Can effectively reduce the emission of pollutants, and has the removal rate of 85 percent of particulate matters, 97 percent of ammonia gas and 99 percent of hydrogen sulfide.
Description
Technical Field
The utility model relates to an environmental control field of breeding trades such as pig, sheep, ox, chicken to the breed mode of taking mechanical ventilation to breed the house, specifically relates to a be used for floor formula to breed house ventilation deodorizing device.
Background
With the development of the breeding industry in China, the cost of breeding enterprises is gradually increased, and the environmental protection pressure is gradually increased. The large-scale intensive culture is favored by the industry due to the efficient management, the specialized culture process and the controllable treatment of pollutants, and becomes a mainstream culture mode.
However, the large-scale cultivation causes great improvement of cultivation density, increases the concentration of gas pollutants in unit space, and is not beneficial to the growth of livestock and poultry. Therefore, a mechanical ventilation mode is adopted in a general breeding house, air in the house is purified, and the environment quality in the house is improved.
And the mechanical ventilation only transfers the odor pollutants in the house to the outside of the house, and the odor pollutants are not treated. The malodorous pollutants in the breeding house mainly comprise particulate matters, aerosol, odor molecules and the like; the particles mainly come from skin secretion and falling of hairiness of the breeding objects and flying dust formed by feed and padding, and the dust particles not only carry malodorous substances, but also carry a large amount of bacteria and viruses; the aerosol mainly comes from a series of physical and chemical reactions of gas pollution, dust and the like in the air, such as ammonia gas, expired gas of a culture object, volatile matters of excrement and urine and the like; the odor molecules mainly come from skin secretion, excrement and urine of the breeding objects and vapor gas generated by fermentation of the excrement and urine. Research shows that 94 kinds of malodorous components of cow dung, 230 kinds of pig dung and 150 kinds of chicken dung are contained. The high-concentration malodorous pollutants discharged outside the house can pollute the outside atmosphere, and simultaneously, the diffusion of the malodorous pollutants can have negative effects on people living in the surrounding environment for a long time.
At present, aiming at odor treatment of mechanical air exhaust breeding houses, filter materials are basically matched with clear water for spraying. The treatment mode can only remove part of dust particles, ammonia gas and odor components which can be dissolved in water, and can not effectively remove PM2.5, PM1.0 and other fine particles and most of malodorous substances which can not be dissolved in water. And the treatment mode has the problems of large water consumption, large energy consumption, easy secondary pollution caused by the wastewater after saturated adsorption and the like.
Based on this, the utility model designs a be used for floor formula to breed house ventilation deodorizing device to solve the above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a be used for floor type to breed house ventilation deodorizing device to the not enough of prior art existence, the energy consumption is low, and the treatment effect is good. The removal rate of the particles is 80 percent, the removal rate of the ammonia gas is 95 percent, the removal rate of the hydrogen sulfide is 99 percent, the gas emission reaches the secondary standard specified in the emission standard of the odor pollutants, the environmental friendliness of the breeding enterprises is improved, and the problems provided in the background art are solved.
In order to realize the above-mentioned purpose, the utility model provides a be used for floor type to breed house ventilation deodorizing device, including between deodorization, deodorization net, the special lifting module of spray tube, wind-break wall, hypochlorous acid generator, constitute between deodorization by between first layer fan mouth deodorization and arrange the second floor fan mouth deodorization on between first layer fan mouth deodorization in between deodorization, the wind-break wall is arranged in between deodorization outside, the special lifting module of spray tube is fixed between the outer wall between deodorization and the wind-break wall, the top of wind-break wall is arranged in to the deodorization screen cloth and is set up in the special lifting module top of spray tube, the outer wall between wind-break wall, deodorization net and deodorization forms between atomizing deodorization.
As a further improvement of the scheme, the hypochlorous acid generator is connected with a hypochlorous acid storage tank through a hypochlorous acid transfer pipeline, the hypochlorous acid storage tank is connected with a hypochlorous acid spraying pump through a hypochlorous acid spraying pump input pipeline, a hypochlorous acid spraying pump outlet is connected with a hypochlorous acid spraying main pipeline, and the hypochlorous acid spraying main pipeline is connected with a hypochlorous acid spraying first branch pipeline and a hypochlorous acid spraying second branch pipeline.
As a further improvement of the scheme, the hypochlorous acid spraying first branch pipeline is arranged at the upper part of the first layer of fan port deodorization room, the spraying direction of the hypochlorous acid spraying first branch pipeline is downward, the hypochlorous acid spraying second branch pipeline is arranged at the upper part of the second layer of deodorization room, the spraying direction of the hypochlorous acid spraying second branch pipeline is downward, and the hypochlorous acid spraying first branch pipeline and the hypochlorous acid spraying second branch pipeline are uniformly arranged below the deodorization net.
As a further improvement of the scheme, the hypochlorous acid spraying first branch pipeline and the hypochlorous acid spraying second branch pipeline are both provided with hypochlorous acid atomizing nozzles, and the hypochlorous acid spraying first branch pipeline and the hypochlorous acid spraying second branch pipeline are fixed on the special lifting module for the spraying pipes.
As a further improvement of the scheme, a first water collecting tank, a first dust-removing filter material and clean water spraying first branch pipeline are arranged in the first layer fan port deodorization room, a second water collecting tank, a second dust-removing filter material and clean water spraying second branch pipeline are arranged in the second layer fan port deodorization room, the first water collecting tank is connected with the return water main pipeline through a first return water branch pipeline, the second water collecting tank is connected with the return water main pipeline through a second return water branch pipeline, and a clean water spraying head is arranged on the first branch pipeline and the clean water spraying second branch pipeline.
As a further improvement of the above scheme, the first water collecting tank is arranged below the first dust removal filter material, the second water collecting tank is arranged below the second dust removal filter material, the clear water sprays the first branch pipeline and is arranged in the dead ahead of the first dust removal filter material and the spraying direction of the first branch pipeline is just opposite to the first dust removal filter material, and the clear water sprays the second branch pipeline and is arranged in the dead ahead of the second dust removal filter material and the spraying direction of the second branch pipeline is just opposite to the second dust removal filter material.
As a further improvement of the above scheme, a circulation water tank is arranged on the ground of the atomization deodorization room, the circulation water tank is connected with a clean water spray pump through a clean water spray pump input pipeline, a clean water spray pump outlet is connected with a clean water spray main pipeline, the clean water spray main pipeline is connected with a clean water spray first branch pipeline and a clean water spray second branch pipeline, a filtering system is arranged on the clean water spray main pipeline, and the circulation water tank is connected with a first return water branch pipeline and a second return water branch pipeline through a return water main pipeline.
The utility model has the advantages that:
1. the utility model adopts two processes of filter material spraying dust removal and hypochlorous acid atomization deodorization to treat the waste gas, the deodorization process is simple and the effect is good;
2. the utility model adopts the polypropylene porous filter material added with the retardant as the main facility for dust removal, the void ratio is 97 percent, the wind resistance can be effectively reduced, and the wind quantity influence on the fan is reduced;
3. the hypochlorous acid atomizer adopted by the utility model is an imported normal pressure atomizer as a main spraying, dedusting and deodorizing means, so that the water consumption and energy consumption are reduced, the operation cost is reduced, the secondary pollution is reduced, and the environmental protection pressure is reduced;
4. the utility model fully improves the contact efficiency of gas and liquid by using the atomization mode, and obviously enhances the deodorization effect;
5. the utility model constructs a large-scale atomization deodorization room outside the original deodorization room, and changes the emission of odor from horizontal straight emission to vertical upward emission; the vertical discharge can effectively slow down the horizontal diffusion speed of the odor, improve the dilution efficiency and reduce the area influenced by odor discharge; meanwhile, the gas discharge stroke is increased, and the liquid-gas contact time is prolonged;
6. the utility model discloses a hypochlorous acid generator field preparation is high-efficient nontoxic, has the high concentration (100 ppm) hypochlorous acid solution of strong oxidizing property, as deodorant oxidant, through the mode of spraying and the abundant contact of the foul smell molecule in airing exhaust in the deodorization room of atomizing, can be rapid with most foul smell composition (for example hydrogen sulfide, volatile fatty acid, indole, smelly element etc.) oxidation to inorganic matters such as carbon dioxide, water, the product after the oxidation does not have toxic and side effect.
Drawings
Fig. 1 is a schematic structural view of a ventilation and deodorization device for a floor-type breeding house provided by the embodiment of the utility model.
The parts of the drawings are numbered as follows: 1. a deodorizing net; 2. a lifting module special for the spray pipe; 3. the second branch pipeline is sprayed with hypochlorous acid; 4. a hypochlorous acid atomizing spray head; 5. a wind-break wall; 6. a first branch pipeline is sprayed with hypochlorous acid; 7. a hypochlorous acid spraying main pipeline; 8. a hypochlorous acid generator; 9. a hypochlorous acid transit pipeline; 10. a hypochlorous acid storage tank; 11. a hypochlorous acid spray pump input pipeline; 12. a hypochlorous acid spray pump; 13. a circulating water tank; 14. the clean water spray pump is input into the pipeline; 15. a clear water spray pump; 16. a filtration system; 17. spraying clean water to the main pipeline; 18. spraying clean water on the first branch pipeline; 19. spraying clean water on the second branch pipeline; 20. a clear water spray header; 21. a water return main pipeline; 22. a first return water branch pipe; 23. a first water collection tank; 24. a first dust-removing filter material; 25. a second return water branch pipeline; 26. a second water collection tank; 27. a second dust-removing filter material; 28. a first layer of fan port deodorization room; 29. the second floor fan mouth deodorization room.
Detailed Description
In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined below to clearly and completely describe the technical solution of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the present invention, belong to the protection scope of the present invention.
Example 1
Referring to fig. 1, the arrow direction is the odor emission direction, the utility model provides a floor type breeding house ventilation centralized deodorization device, including deodorization net 1, special lifting module 2 of spray pipe, hypochlorous acid spraying second branch pipeline 3, hypochlorous acid atomizer 4, wind-break wall 5, hypochlorous acid spraying first branch pipeline 6, hypochlorous acid spraying main pipeline 7, hypochlorous acid generator 8, hypochlorous acid transfer pipeline 9, hypochlorous acid storage tank 10, hypochlorous acid spraying pump input pipeline 11, hypochlorous acid spraying pump 12, circulating water tank 13, clear water spraying pump input pipeline 14, clear water spraying pump 15, filtration system 16, clear water spraying main pipeline 17, clear water spraying first branch pipeline 18, clear water spraying second branch pipeline 19, clear water spraying head 20, return water main pipeline 21, first return water branch pipeline 22, first water catch bowl 23, first dust removal filter material 24, second return water branch pipeline 25, second water catch bowl 26, second dust removal filter material 27.
In this embodiment, the special lifting module 2 of spray pipe is fixed on deodorization room outer wall and wind-break wall 5, and wind-break wall 5 sets up outside the deodorization room outer wall, and deodorization net 1 is fixed on deodorization room outer wall and wind-break wall 5, deodorization room outer wall and deodorization net 1 form the atomizing deodorization room jointly.
In the embodiment, a hypochlorous acid spraying first branch pipeline 6 and a hypochlorous acid spraying second branch pipeline 3 are fixed on the special lifting module 2 for the spraying pipe, the hypochlorous acid spraying first branch pipeline 6 is arranged above a first layer of fan port deodorization room 28, the hypochlorous acid spraying second branch pipeline 3 is arranged above a second layer of fan port deodorization room 29, the hypochlorous acid spraying first branch pipeline 6 and the hypochlorous acid spraying second branch pipeline 3 are connected with a hypochlorous acid spraying pump 12 through a hypochlorous acid spraying main pipeline 7, and hypochlorous acid spraying nozzles 4 are arranged on the hypochlorous acid spraying first branch pipeline 6 and the hypochlorous acid spraying second branch pipeline 3;
further, the hypochlorous acid generator 8 is connected with a hypochlorous acid storage tank 10 through a hypochlorous acid transit pipeline 9, the hypochlorous acid storage tank 10 is connected with a hypochlorous acid input pump 12 through a hypochlorous acid spray pump input pipeline 11, and the outlet of the hypochlorous acid input pump 12 is connected with a hypochlorous acid spray main pipeline 7.
In this embodiment, the circulating water tank 13 is disposed on the ground inside the atomizing and deodorizing room, the lower portion of the circulating water tank 13 is connected to the clean water spray pump 15 through the clean water spray pump input pipeline 14, the outlet of the clean water spray pump 15 is connected to the clean water spray main pipeline 17, and the clean water spray main pipeline 17 is provided with the filtering system 16.
In this embodiment, the first dust-removing filter 24 is disposed in the first-layer fan-mouth deodorizing room 28, the first water collecting tank 23 is disposed below the first dust-removing filter 24, and the clean water spraying first branch pipeline 18 is disposed right in front of the first dust-removing filter 24; the second dust-removing filter 27 is arranged in the second layer fan port deodorization room, the second water collecting tank 26 is arranged below the second dust-removing filter 27, and the clean water spraying second branch pipeline 19 is arranged right in front of the second dust-removing filter 24.
The clean water spraying first branch pipeline 18 and the clean water spraying second branch pipeline 19 are connected with the clean water spraying pump 15 through a clean water spraying main pipeline 17, and clean water spraying heads 20 are arranged on the clean water spraying first branch pipeline 18 and the clean water spraying second branch pipeline 19.
Furthermore, the first water collecting tank 23 is connected to the main return water pipe 21 through a first return water branch pipe 22, and the second water collecting tank 26 is connected to the main return water pipe 21 through a second return water branch pipe 25.
The specific working principle is as follows:
the distance between the first dust removing filter material 24 and the second dust removing filter material 27 and the fan port is larger than the length of the jet flow starting section of the ventilator, and the clean water spraying first branch pipeline 18 and the clean water spraying second branch pipeline 19 are arranged at the position where the distance between the first dust removing filter material 24 and the second dust removing filter material 27 is 0.45-0.65 m.
The distance between clear water shower head 20 is 0.7 to 1.0 meter, start clear water spray pump 15, the return water in circulating water tank 13 is through clear water spray pump input pipeline 14 suction clear water spray pump 15, then filter via filtration system 16, spray main pipeline 17 through the clear water, clear water sprays first branch pipeline 18 and clear water sprays second branch pipeline 19 and carries to clear water spray head 20, form the conical water curtain of dispersion, spray to the filter media side, form the water curtain that top-to-bottom flows, particulate matter and soluble foul smell molecule in the fan is aired exhaust, with conical water curtain, the inside water curtain of filter media carries out abundant contact, greatly get rid of.
The spray water falls onto the first water collecting tank 23 and the second water collecting tank 26, and is converged to the return water main pipeline 21 through the first return water branch pipeline 22 and the second return water branch pipeline 25, and enters the circulating water tank 13 for spray recycling.
The hypochlorous acid generator 8 is used for producing hypochlorous acid solution, and the hypochlorous acid solution is conveyed into a hypochlorous acid storage tank 10 through a hypochlorous acid transit pipeline 9 and is used by a hypochlorous acid spraying pump 12.
The first branch pipeline 6 of chloric acid spraying, hypochlorous acid spraying second branch pipeline 3 are connected with hypochlorous acid spraying pump 12 through hypochlorous acid spraying main pipeline 7, evenly are equipped with hypochlorous acid atomizer 4 on the first branch pipeline 6 of hypochlorous acid spraying, hypochlorous acid spraying second branch pipeline 3, and its spraying direction is downward to the atomizing liquid drop can be even be covered with whole atomizing deodorization room.
Under the state that the hypochlorous acid spray pump 12 is started, the hypochlorous acid is formed at the outlet of the hypochlorous acid atomizing nozzle 4 to spray, the hypochlorous acid liquid drops with the grain diameter of about 50 mu m can be formed by the normal-pressure hypochlorous acid atomizing nozzle 4, the odor after being dedusted by the first dedusting filter material 24 and the second dedusting filter material 27 changes the direction in the atomizing and deodorizing room and is fully contacted with the hypochlorous acid liquid drops which are diffused in the whole atomizing and deodorizing room to generate oxidation reaction; meanwhile, the particle size of the atomized liquid drops is dozens of microns, the gas-liquid boundary condition is sufficient, and under the illumination of light penetrating through the deodorization net 1, hypochlorous acid can perform decomposition reaction to generate new oxygen, the new oxygen has strong oxidizing property and can oxidize odor molecules in gas;
part of atomized liquid drops are upwards intercepted by the deodorization net 1 along with the airflow, are coalesced into water drops with large diameters on the deodorization net 1 and then fall down, form a hypochlorous acid dripping state in the atomization deodorization room, further react with odor, and realize good deodorization effect under the combined action of several reactions.
The dripping hypochlorous acid water drops are collected by the circulating water tank 13, and the residual hypochlorous acid can be sprayed by the clear water spray header 20 to participate in dust removal treatment, so that the utilization rate of the hypochlorous acid is improved, and the integral deodorization effect is improved.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
The above-described embodiments should not be construed as limiting the present invention, and any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (7)
1. The utility model provides a be used for floor type to breed house ventilation deodorizing device, includes between the deodorization, deodorization net (1), special lifting module (2) of spray pipe, wind-break wall (5), hypochlorous acid generator (8), constitute its characterized in that between deodorization by between first layer fan mouth deodorization (28) and arrange second floor fan mouth deodorization on between first layer fan mouth deodorization (28) in (29) between deodorization: the utility model discloses a deodorization spray pipe, including the deodorization of being equipped with between the deodorization of being equipped with, between the deodorization of being equipped with between the deodorization of wind-break wall (5), between the outer wall of deodorization room and wind-break wall (5) is fixed in special lifting module (2) of spray pipe, deodorization net (1) arranges in the top of wind-break wall (5) and sets up in special lifting module (2) top of spray pipe, between outer wall formation atomizing deodorization of wind-break wall (5), deodorization net (1) and deodorization.
2. A ventilating and deodorizing device for storied breeding houses according to claim 1, characterized in that: the hypochlorous acid generator (8) is connected with a hypochlorous acid storage tank (10) through a hypochlorous acid transfer pipeline (9), the hypochlorous acid storage tank (10) is connected with a hypochlorous acid spraying pump (12) through a hypochlorous acid spraying pump input pipeline (11), an outlet of the hypochlorous acid spraying pump (12) is connected with a hypochlorous acid spraying main pipeline (7), and the hypochlorous acid spraying main pipeline (7) is connected with a hypochlorous acid spraying first branch pipeline (6) and a hypochlorous acid spraying second branch pipeline (3).
3. A ventilation and deodorisation device for floor-type breeding houses according to claim 2, wherein: the first hypochlorous acid spraying branch pipeline (6) is arranged on the upper portion of a first layer of fan port deodorization room (28) and the spraying direction of the first hypochlorous acid spraying branch pipeline is downward, the second hypochlorous acid spraying branch pipeline (3) is arranged on the upper portion of a second layer of deodorization room and the spraying direction of the second hypochlorous acid spraying branch pipeline is downward, and the first hypochlorous acid spraying branch pipeline (6) and the second hypochlorous acid spraying branch pipeline (3) are uniformly arranged below the deodorization net (1).
4. A ventilation and deodorisation device for floor-type breeding houses according to claim 2, wherein: and the hypochlorous acid spraying first branch pipeline (6) and the hypochlorous acid spraying second branch pipeline (3) are respectively provided with a hypochlorous acid atomizing spray head (4), and the hypochlorous acid spraying first branch pipeline (6) and the hypochlorous acid spraying second branch pipeline (3) are fixed on the special lifting module (2) for the spraying pipe.
5. A ventilating and deodorizing device for storied breeding houses according to claim 1, characterized in that: the improved air conditioner is characterized in that a first water collecting tank (23), a first dust removing filter material (24) and clean water spraying first branch pipelines (18) are arranged in the first layer fan port deodorization room (28), a second water collecting tank (26), a second dust removing filter material (27) and clean water spraying second branch pipelines (19) are arranged in the second layer fan port deodorization room (29), the first water collecting tank (23) is connected with a return water main pipeline (21) through a first return water branch pipeline (22), the second water collecting tank (26) is connected with the return water main pipeline (21) through a second return water branch pipeline (25), and clean water spraying first branch pipelines (18) and clean water spraying second branch pipelines (19) are provided with clean water spray heads (20).
6. A ventilation and deodorization device for a floor-type breeding house according to claim 5, wherein: first water catch bowl (23) are arranged in the below of first dust removal filter media (24), second water catch bowl (26) are arranged in second dust removal filter media (27) below, the clear water sprays first branch pipeline (18) and arranges in the dead ahead of first dust removal filter media (24) and its direction of spraying just to first dust removal filter media (24), the clear water sprays second branch pipeline (19) and arranges in second dust removal filter media (27) dead ahead and its direction of spraying just to second dust removal filter media (27).
7. A ventilating and deodorizing device for floor type breeding houses according to claim 1, wherein: the ground of the atomization deodorization room is provided with a circulating water tank (13), the circulating water tank (13) is connected with a clean water spraying pump (15) through a clean water spraying pump input pipeline (14), an outlet of the clean water spraying pump (15) is connected with a clean water spraying main pipeline (17), the clean water spraying main pipeline (17) is connected with a clean water spraying first branch pipeline (18) and a clean water spraying second branch pipeline (19), the clean water spraying main pipeline (17) is provided with a filtering system (16), and the circulating water tank (13) is connected with a first return water branch pipeline (22) and a second return water branch pipeline (25) through a return water main pipeline (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221152594.4U CN217887420U (en) | 2022-05-13 | 2022-05-13 | Be used for floor type to breed house ventilation deodorizing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221152594.4U CN217887420U (en) | 2022-05-13 | 2022-05-13 | Be used for floor type to breed house ventilation deodorizing device |
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| CN217887420U true CN217887420U (en) | 2022-11-25 |
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| CN202221152594.4U Active CN217887420U (en) | 2022-05-13 | 2022-05-13 | Be used for floor type to breed house ventilation deodorizing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115868417A (en) * | 2022-12-01 | 2023-03-31 | 南通大学 | Central ventilation device for building cultivation |
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2022
- 2022-05-13 CN CN202221152594.4U patent/CN217887420U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115868417A (en) * | 2022-12-01 | 2023-03-31 | 南通大学 | Central ventilation device for building cultivation |
| CN115868417B (en) * | 2022-12-01 | 2024-05-24 | 南通大学 | Centralized ventilation device for building cultivation |
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