CN215696637U - Fertilizer raw materials yard factory air purification device - Google Patents
Fertilizer raw materials yard factory air purification device Download PDFInfo
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- CN215696637U CN215696637U CN202121337467.7U CN202121337467U CN215696637U CN 215696637 U CN215696637 U CN 215696637U CN 202121337467 U CN202121337467 U CN 202121337467U CN 215696637 U CN215696637 U CN 215696637U
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Abstract
The application discloses fertilizer raw materials yard factory air purification device includes: the device comprises air extraction frames arranged in pairs, air extraction curtain covers arranged in pairs, a plurality of high-energy ultraviolet lamps, a filter box and an exhaust fan; a first door opening and a second door opening are respectively formed in two opposite side walls of the composting shed, and air exhaust frames are respectively arranged on the side walls of the first door opening and the second door opening; the air extraction frames are symmetrically arranged on the inner side walls of the first door opening and the second door opening in pairs; an air outlet is arranged on the side wall of the top surface of the air extracting frame and is communicated with an air inlet pipeline of the exhaust fan; a plurality of air guide holes are formed in the inner side wall of the air exhaust frame; the air exhaust curtain cover is arranged on the top surface of the inlet and the outlet of the composting field, and the air guide plates are arranged on the side walls of the top corners of the bottom surface of the air exhaust curtain cover, so that high-concentration malodorous gas at the upper part can be effectively collected, the gas flowing speed of the edge of a collection area is increased, and the gas flowing speed of the collection area is increased by pumping the gas of the air extractor.
Description
Technical Field
The application relates to the technical field of organic fertilizer production, in particular to an air purification device for an organic fertilizer raw material yard.
Background
The organic fertilizer is prepared from green plants, crop straws, human excrement, livestock and bird droppings, garbage, etc. through retting, stacking, high-temp fermenting and decomposing. There are many kinds of such fertilizers, including manure (ring manure), green manure, compost, manure, retting, cake manure, etc. The organic fertilizer generally contains a plurality of organic matters and a plurality of nutrients such as nitrogen, phosphorus, potassium and the like. The application of the organic fertilizer can meet the requirements of crops on various nutrients, improve soil properties, culture soil fertility and improve crop yield.
Materials used in the existing composting yard are all substances with strong odor, the substances decomposed in the composting process can increase the complexity of odor components, various malodorous substances are further enhanced, door holes are additionally formed in the side walls of the composting shed for facilitating the passing in and out of the composting shed, the door holes often become main channels for the leakage of the malodorous substances, after the gases are directly discharged, the concentration of the malodorous substances in the environment around the composting yard is high, the malodorous substances are sucked for a long time, and the physical health of operators is seriously influenced. The malodorous substances in the environment around the composting site are mainly ammonia substances and sulfides, and the substances are also difficult to decompose in nature and cause environmental pollution.
SUMMERY OF THE UTILITY MODEL
The application provides an organic fertilizer raw material yard plant air purification device for solving the technical problem.
The application provides fertilizer raw materials yard factory air purification device includes: the device comprises air extraction frames arranged in pairs, air extraction curtain covers arranged in pairs, a plurality of high-energy ultraviolet lamps, a filter box and an exhaust fan;
a first door opening and a second door opening are respectively formed in two opposite side walls of the composting shed, and air exhaust frames are respectively arranged on the side walls of the first door opening and the second door opening; the air extraction frames are symmetrically arranged on the inner side walls of the first door opening and the second door opening in pairs; an air outlet is arranged on the side wall of the top surface of the air extracting frame and is communicated with an air inlet pipeline of the exhaust fan; a plurality of air guide holes are formed in the inner side wall of the air exhaust frame;
the air exhaust curtain cover is arranged at the upper parts of the first door opening and the second door opening; the side wall of the top surface of the air exhaust curtain cover is provided with an air outlet and is communicated with an exhaust fan pipeline; the filter box is communicated with an air outlet pipeline of the exhaust fan;
the curtain cover of bleeding includes: the high-energy ultraviolet lamp comprises a cover body, an end sealing plate, a first air inlet side plate, a second air inlet side plate, a plurality of air exhaust bent pipes, an inclined plate and a plurality of high-energy ultraviolet lamps, wherein the cover body is hollow, and an opening is formed in the bottom surface of the cover body; a first air inlet side plate and a second air inlet side plate are symmetrically arranged on the vertex angle of the bottom surface of the cover body; a plurality of through holes are formed along the longitudinal direction and penetrate through the first air inlet side plate, and the through holes are communicated with the inner cavity of the cover body and the composting shed; a plurality of through holes are formed along the longitudinal direction and penetrate through the second air inlet side plate, and the through holes are communicated with the inner cavity of the cover body and the composting shed;
a plurality of air-extracting bent pipes are arranged along the periphery of the bottom surface of the cover body, one end of each air-extracting bent pipe is connected with the periphery of the bottom surface of the cover body, the other end of each air-extracting bent pipe extends downwards, and the extending end of each air-extracting bent pipe extends towards the composting shed after being bent; the end sealing plates are symmetrically arranged on the end surfaces of the cover body, the first air inlet side plate, the second air inlet side plate and the inclined plate in pairs; the air exhaust bent pipe is communicated with the inner cavity of the cover body; the inclined plate is covered on the outer side edge of the bottom surface of the cover body and the bottoms of the first air inlet side plate and the second air inlet side plate; the high-energy ultraviolet lamps are arranged on the top surface of the cover body at intervals; a plurality of high-energy ultraviolet lamps are arranged on the inner side wall of the filter box at intervals.
Preferably, the pumping frame comprises: the frame body is attached to the inner side wall of the first door opening; the outer side wall of the frame body is an opening, and the plate body is covered on the opening; a plurality of air guide holes are formed in the plate body; the side wall of the upper part of the frame body is provided with an exhaust port which is communicated with an exhaust fan pipeline.
Preferably, the pumping frame comprises: the frame body is attached to the inner side wall of the second door opening; the outer side wall of the frame body is an opening, and the plate body is covered on the opening; a plurality of air guide holes are formed in the plate body; the side wall of the upper part of the frame body is provided with an exhaust port which is communicated with an exhaust fan pipeline.
Preferably, one end of the inclined plate is connected with the bottom side of the cover body, and the other end of the inclined plate extends towards the bottom of the first air inlet side plate.
Preferably, the filter box comprises: the air-purifying box comprises a box body and a plurality of layers of activated carbon adsorption interlayers, wherein an air inlet is formed in the first side wall of the box body and is communicated with an air outlet pipeline of an exhaust fan; an air outlet is formed in the second side wall of the box body; the air outlet and the air inlet of the box body are arranged in a staggered manner; a plurality of layers of activated carbon adsorption interlayers are arranged in the box body at intervals.
Preferably, a plurality of high-energy ultraviolet lamps are arranged on the first inner side wall of the box body at intervals; a plurality of high-energy ultraviolet lamps are arranged on the second inner side wall of the box body at intervals.
Preferably, the activated carbon adsorption interlayer comprises: the first activated carbon adsorption interlayer is arranged close to the first side wall of the box body; the second activated carbon adsorption interlayer and the third activated carbon adsorption interlayer are arranged close to the third side wall of the box body; the second active carbon adsorption interlayer is arranged in the middle of the box body.
The beneficial effects that this application can produce include:
1) the application provides a fertilizer raw materials yard factory air purification device imports and exports the top surface through setting up the curtain cover of bleeding on the compost field to set up the aviation baffle on curtain cover bottom surface apex angle lateral wall of bleeding, realize the effective gathering to the higher foul gas of upper portion concentration, strengthen the gas flow speed at gathering regional edge simultaneously, pump the gas in gathering the region through the air extractor, improve this regional gas outflow speed. Because odor substances are mostly positioned above the environment of the composting field, the odor gas can be effectively reduced from being discharged out of the composting field by enhancing the speed and the flow of the air flow above; meanwhile, the side wall of the lower part of the door opening is provided with the air exhaust frame to exhaust the gas in the area, so that the direct leakage quantity of the malodorous gas is reduced, the malodorous gas is treated in a centralized way through the filter, the evacuation proportion of the malodorous gas is reduced, and the environment is purified.
2) The application provides a fertilizer raw materials yard factory air purification device, curtain cover and rose box pipeline intercommunication bleed, carry out UV photodissociation and filtration absorption in letting in the gas that contains the foul substance in the adsorption filter, get rid of wherein contained foul substance and evacuation to contain foul substance mass in the effective reduction exhaust gas, reduce factory environmental pollution.
Drawings
Fig. 1 is a schematic view of an air purification device in a plant area of an organic fertilizer raw material yard provided by the present application;
FIG. 2 is a schematic front view of an air extraction curtain according to the present application;
FIG. 3 is a schematic view of a back side of a door frame panel provided herein;
FIG. 4 is a schematic diagram of a stacking shed test structure provided herein;
illustration of the drawings:
10. a composting shed; 13. An air exhaust frame; 131. a wind guide hole; 132. a plate body; 133. a frame body; 11. an air exhaust curtain cover; 111. a cover body; 112. a first intake side panel; 113. air exhaust bent pipe; 114. a sloping plate; 115. an air extractor; 116. a high energy ultraviolet lamp; 20. a filter box; 211. a first activated carbon adsorption interlayer; 212. a second activated carbon adsorption interlayer; 213. and a third activated carbon interlayer.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are used only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element that is referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1~4, the application provides an organic fertilizer raw materials yard factory air purification device includes: the device comprises air extraction frames 13 arranged in pairs, air extraction curtain covers 11 arranged in pairs, a plurality of high-energy ultraviolet lamps 116, a filter box 20 and an exhaust fan;
a first door opening and a second door opening are respectively formed in two opposite side walls of the composting shed 10, and air exhaust frames 13 are respectively arranged on the side walls of the first door opening and the second door opening; the air pumping frames 13 are symmetrically arranged on the inner side walls of the first door opening and the second door opening in pairs; an air outlet is arranged on the side wall of the top surface of the air extracting frame 13 and is communicated with an air inlet pipeline of the exhaust fan; a plurality of air guide holes 131 are formed in the inner side wall of the air exhaust frame 13;
the air exhaust curtain cover 11 covers the upper parts of the first door opening and the second door opening; the side wall of the top surface of the air exhaust curtain cover 11 is provided with an air outlet and is communicated with an exhaust fan pipeline; the filter box 20 is communicated with an exhaust outlet pipeline of the exhaust fan;
the air-extracting curtain 11 includes: the solar air conditioner comprises a cover body 111, an end sealing plate, a first air inlet side plate 112, a second air inlet side plate, a plurality of air exhaust bent pipes 113, an inclined plate 114 and a plurality of high-energy ultraviolet lamps 116, wherein the cover body 111 is hollow, and the bottom surface of the cover body 111 is provided with an opening; a first air inlet side plate 112 and a second air inlet side plate are symmetrically arranged on the top corner of the bottom surface of the cover body 111; a plurality of through holes are formed along the longitudinal direction and penetrate through the first air inlet side plate 112, and the through holes are communicated with the inner cavity of the cover body 111 and the composting shed 10; a plurality of through holes are formed along the longitudinal direction and penetrate through the second air inlet side plate, and the through holes are communicated with the inner cavity of the cover body 111 and the composting shed 10;
a plurality of air-extracting bent pipes 113 are arranged along the periphery of the bottom surface of the cover body 111, one end of each air-extracting bent pipe 113 is connected with the periphery of the bottom surface of the cover body 111, the other end of each air-extracting bent pipe 113 extends downwards, and the extending end of each air-extracting bent pipe 113 extends towards the composting shed 10 after being bent; the end sealing plates are symmetrically arranged on the end surfaces of the cover body 111, the first air inlet side plate 112, the second air inlet side plate and the inclined plate 114 in pairs; the air exhaust bent pipe 113 is communicated with the inner cavity of the cover body 111; the inclined plate 114 covers the outer side edge of the bottom surface of the cover body 111 and the bottoms of the first air inlet side plate 112 and the second air inlet side plate; the high-energy ultraviolet lamps 116 are arranged on the top surface of the cover 111 at intervals; a plurality of high energy uv lamps 116 are spaced apart on the inside wall of the filter box 20.
Through setting up cover body 111, first air inlet curb plate 112, second air inlet curb plate, 114 piece covers body 111 below region and encloses to establish and wrap for the oblique angle, effectively gathers together the higher foul gas of this regional concentration, simultaneously through first air inlet curb plate 112, second air inlet curb plate and last through-hole, strengthens the directional flow effect of the regional gas of this region edge. Meanwhile, the directional flow of the gas in the area near the end sealing plate is enhanced through the air exhaust bent pipe 113, and the flow rate of the gas entering the inner cavity of the cover body 111 is improved.
Through set up the frame 13 of taking out air on the relative lateral wall at the door opening to set up wind-guiding hole 131 on the frame 13 lateral wall of taking out air, can strengthen the velocity of flow of gas in the door opening, strengthen gaseous directional mobility through wind-guiding hole 131 simultaneously, thereby realize taking out the gas through the door opening effectively, get into rose box 20 through the air exhauster and adsorb and handle, thereby realize effectively handling the gas through the door opening region.
Through set up multiunit high energy ultraviolet lamp 116 on the filter inside wall, simultaneously through setting up high energy ultraviolet lamp 116, can be to getting into the cover body 111 to obtain the foul gas that the cover body 111 gathers together and carry out preliminary UV and decompose.
The waste gas is degraded into CO after the molecular bonds VOCs of pollutants such as volatile organic compounds and the like generate various chemical reactions such as ring opening, breakage and the like under the irradiation of high-energy ultraviolet rays2And meanwhile, the high-energy ultraviolet rays can enable oxygen in the air to generate ozone, and the ozone generates stronger oxidant to react with other organic matters in the waste gas under the action of the high-energy ultraviolet rays, so that the malodorous substances contained in the waste gas are decomposed, and the smell in the gas is reduced. The inclined plate 114 also reduces the amount of accumulated gas from leaving the enclosure, improving process efficiency.
When in use, the gas with less content of malodorous substances is pumped into the filter box 20 through the symmetrically arranged air exhaust frames 13 and the exhaust fan for decomposition treatment; the gas with high content of the malodorous substances above the door opening firstly obtains the UV decomposition effect under the gathering effect of the cover body 111, and then enters the filter box 20 to be decomposed, thereby effectively reducing the content and proportion of the malodorous substances discharged through the door opening.
Preferably, the suction frame 13 comprises: the frame body 133 is attached to the inner side wall of the first door opening; the outer side wall of the frame 133 is open, and the plate body 132 is covered on the open; a plurality of air guide holes 131 are formed in the plate body 132; an exhaust port is formed in the side wall of the upper portion of the frame 133 and is communicated with an exhaust fan pipeline.
Preferably, the suction frame 13 comprises: the frame body 133 is attached to the inner side wall of the second door opening; the outer side wall of the frame 133 is open, and the plate body 132 is covered on the open; a plurality of air guide holes 131 are formed in the plate body 132; an exhaust port is formed in the side wall of the upper portion of the frame 133 and is communicated with an exhaust fan pipeline.
Preferably, one end of the inclined plate 114 is connected to the side edge of the bottom surface of the cover 111, and the other end extends toward the bottom of the first intake side plate 112.
Preferably, the filtering tank 20 comprises: the air-purifying box comprises a box body and a plurality of layers of activated carbon adsorption interlayers, wherein an air inlet is formed in the first side wall of the box body and is communicated with an air outlet pipeline of an exhaust fan; an air outlet is formed in the second side wall of the box body; the air outlet and the air inlet of the box body are arranged in a staggered manner; a plurality of layers of activated carbon adsorption interlayers are arranged in the box body at intervals.
Through setting up the active carbon adsorption intermediate layer and dislocation set air inlet, gas outlet, can prolong gaseous moving path at the box, improve the treatment effect.
Preferably, a plurality of high-energy ultraviolet lamps 116 are arranged on the first inner side wall of the box body at intervals; a plurality of high energy uv lamps 116 are spaced apart on a second interior sidewall of the housing.
By arranging the high-energy ultraviolet lamp 116 in the box body, malodorous substances contained in the gas can be effectively decomposed to form micromolecular substances, thereby realizing the deodorization effect.
The residual odorous substances in the gas can be effectively filtered by arranging the activated carbon adsorption interlayer, so that the treatment effect is improved.
Preferably, the activated carbon adsorption interlayer comprises: the first activated carbon adsorption interlayer 211 is arranged close to the first side wall of the box body; the second activated carbon adsorption interlayer 212 and the third activated carbon adsorption interlayer are arranged close to the third side wall of the box body; the second activated carbon adsorption interlayer 212 is arranged in the middle of the box body. Through setting up multilayer active carbon material layer, can improve exhaust gas purity, further reduce the content of foul smell material.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the utility model can be made, and equivalents and modifications of some features of the utility model can be made without departing from the spirit and scope of the utility model.
Claims (7)
1. The utility model provides an organic fertilizer raw material yard factory air purification device which characterized in that includes: the device comprises air extraction frames (13) arranged in pairs, air extraction curtain covers (11) arranged in pairs, a plurality of high-energy ultraviolet lamps (116), a filter box (20) and an exhaust fan;
a first door opening and a second door opening are respectively formed in two opposite side walls of the composting shed (10), and air exhaust frames (13) are respectively arranged on the side walls of the first door opening and the second door opening; the air pumping frames (13) are symmetrically arranged on the inner side walls of the first door opening and the second door opening in pairs; an air outlet is arranged on the side wall of the top surface of the air extracting frame (13) and is communicated with an air inlet pipeline of the exhaust fan; a plurality of air guide holes (131) are formed in the inner side wall of the air exhaust frame (13);
the air exhaust curtain cover (11) is covered on the upper parts of the first door opening and the second door opening; the side wall of the top surface of the air exhaust curtain cover (11) is provided with an air outlet and is communicated with an exhaust fan pipeline; the filter box (20) is communicated with an air outlet pipeline of the exhaust fan;
the air extraction curtain (11) comprises: the high-energy ultraviolet lamp comprises a cover body (111), an end sealing plate, a first air inlet side plate (112), a second air inlet side plate, a plurality of air exhaust bent pipes (113), an inclined plate (114) and a plurality of high-energy ultraviolet lamps (116), wherein the cover body (111) is hollow, and an opening is formed in the bottom surface of the cover body (111); a first air inlet side plate (112) and a second air inlet side plate are symmetrically arranged on the top corner of the bottom surface of the cover body (111); a plurality of through holes are formed along the longitudinal direction and penetrate through the first air inlet side plate (112), and the through holes are communicated with the inner cavity of the cover body (111) and the composting shed (10); a plurality of through holes are formed along the longitudinal direction and penetrate through the second air inlet side plate, and the through holes are communicated with the inner cavity of the cover body (111) and the composting shed (10);
a plurality of air-extracting bent pipes (113) are arranged along the periphery of the bottom surface of the cover body (111), one end of each air-extracting bent pipe (113) is connected with the periphery of the bottom surface of the cover body (111), the other end of each air-extracting bent pipe extends downwards, and the extending end of each air-extracting bent pipe (113) extends towards the composting shed (10) after being bent; the end sealing plates are symmetrically arranged on the end surfaces of the cover body (111), the first air inlet side plate (112), the second air inlet side plate and the inclined plate (114) in pairs; the air-extracting bent pipe (113) is communicated with the inner cavity of the cover body (111); the inclined plate (114) is covered on the outer side edge of the bottom surface of the cover body (111) and the bottoms of the first air inlet side plate (112) and the second air inlet side plate; the high-energy ultraviolet lamps (116) are arranged on the top surface of the cover body (111) at intervals; a plurality of high-energy ultraviolet lamps (116) are arranged on the inner side wall of the filter box (20) at intervals.
2. The organic fertilizer raw material yard plant area air purification apparatus according to claim 1, wherein said air extraction frame (13) comprises: the frame body (133) is attached to the inner side wall of the first door opening; the outer side wall of the frame body (133) is open, and the plate body (132) is arranged on the open; a plurality of air guide holes (131) are formed in the plate body (132); an exhaust port is formed in the side wall of the upper part of the frame body (133), and the exhaust port is communicated with an exhaust fan pipeline.
3. The organic fertilizer raw material yard plant area air purification apparatus according to claim 1, wherein said air extraction frame (13) comprises: the frame body (133) is attached to the inner side wall of the second door opening; the outer side wall of the frame body (133) is open, and the plate body (132) is arranged on the open; a plurality of air guide holes (131) are formed in the plate body (132); an exhaust port is formed in the side wall of the upper part of the frame body (133), and the exhaust port is communicated with an exhaust fan pipeline.
4. The organic fertilizer raw material yard plant area air purification device as claimed in claim 1, wherein one end of the sloping plate (114) is connected with the side edge of the bottom surface of the cover body (111), and the other end extends towards the bottom of the first air inlet side plate (112).
5. The organic fertilizer raw material yard plant area air purification apparatus of claim 1, wherein said filter box (20) comprises: the air-purifying box comprises a box body and a plurality of layers of activated carbon adsorption interlayers, wherein an air inlet is formed in the first side wall of the box body and is communicated with an air outlet pipeline of an exhaust fan; an air outlet is formed in the second side wall of the box body; the air outlet and the air inlet of the box body are arranged in a staggered manner; a plurality of layers of activated carbon adsorption interlayers are arranged in the box body at intervals.
6. The organic fertilizer raw material yard plant area air purification device of claim 5, wherein a plurality of high-energy ultraviolet lamps (116) are arranged on the first inner side wall of the box body at intervals; a plurality of high-energy ultraviolet lamps (116) are arranged on the second inner side wall of the box body at intervals.
7. The organic fertilizer raw material yard plant area air purification device of claim 5, wherein said activated carbon adsorption interlayer comprises: the first activated carbon adsorption interlayer (211), the second activated carbon adsorption interlayer (212) and the third activated carbon adsorption interlayer are arranged, and the first activated carbon adsorption interlayer (211) is close to the first side wall of the box body; the second activated carbon adsorption interlayer (212) and the third activated carbon adsorption interlayer are arranged close to the third side wall of the box body; the second activated carbon adsorption interlayer (212) is arranged in the middle of the box body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121337467.7U CN215696637U (en) | 2021-06-16 | 2021-06-16 | Fertilizer raw materials yard factory air purification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121337467.7U CN215696637U (en) | 2021-06-16 | 2021-06-16 | Fertilizer raw materials yard factory air purification device |
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| Publication Number | Publication Date |
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| CN215696637U true CN215696637U (en) | 2022-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121337467.7U Active CN215696637U (en) | 2021-06-16 | 2021-06-16 | Fertilizer raw materials yard factory air purification device |
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| CN (1) | CN215696637U (en) |
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2021
- 2021-06-16 CN CN202121337467.7U patent/CN215696637U/en active Active
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