CN110595246A - Waste heat treatment device for mechanical production - Google Patents
Waste heat treatment device for mechanical production Download PDFInfo
- Publication number
- CN110595246A CN110595246A CN201910772355.5A CN201910772355A CN110595246A CN 110595246 A CN110595246 A CN 110595246A CN 201910772355 A CN201910772355 A CN 201910772355A CN 110595246 A CN110595246 A CN 110595246A
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- Prior art keywords
- box
- wall
- pipe
- heat treatment
- waste heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 239000002918 waste heat Substances 0.000 title claims abstract description 36
- 238000010438 heat treatment Methods 0.000 title claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 239000012535 impurity Substances 0.000 claims abstract description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 43
- 238000001914 filtration Methods 0.000 claims description 24
- 238000003466 welding Methods 0.000 claims description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 13
- 239000002699 waste material Substances 0.000 claims description 8
- 238000004804 winding Methods 0.000 claims description 6
- 239000008187 granular material Substances 0.000 claims description 5
- 239000007789 gas Substances 0.000 abstract description 23
- 238000011084 recovery Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 241001233242 Lontra Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
- B01D46/103—Curved filtering elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
- F28D21/0014—Recuperative heat exchangers the heat being recuperated from waste air or from vapors
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a waste heat treatment device for mechanical production, which comprises an air compressor body and a box body, wherein an air pipe is welded at the output end of the air compressor body, the other end of the air pipe is communicated with the box body, the waste heat treatment device also comprises an impurity removal device, the impurity removal device comprises an outer box, the outer box is fixed on the inner wall of one side of the box body through a bolt, the outer box is connected with the air pipe, a first impurity removal plate and a second impurity removal plate are welded on the inner wall of the top of the outer box, and a plurality of air holes are formed in the outer walls of the first impurity removal plate and the second impurity removal plate. The V-shaped impurity removing device can filter and remove impurities from gas, prevents impurities with larger volume from entering a rear pipeline to block the pipeline, and enables the gas to flow upwards.
Description
Technical Field
The invention relates to the technical field of waste heat treatment, in particular to a waste heat treatment device for mechanical production.
Background
The screw air compressor adopts a preformed screw air compressor, only needs single power supply connection and compressed air connection, and is internally provided with a cooling system, so that the installation work is greatly simplified. The screw air compressor has many advantages, such as high efficiency, maintenance-free, etc., but during its operation, a large amount of high-temperature oil gas is directly discharged to the outside, which causes energy waste, so that a waste heat recovery device is needed to fully utilize the energy of the high-temperature gas.
Through the retrieval, chinese patent is granted No. CN 206803833U's patent, discloses a gas-water exchanger for mechanical waste heat recovery, which comprises a housin, the inside of casing is equipped with the cavity, the rear side surface upper end of cavity is equipped with the water inlet, the last fixed surface of water inlet is connected with sealed cap, the upper surface center department of sealed cap is equipped with the basin, the inside outside that adds the basin is equipped with the hole of permeating water, the lower surface in the hole of permeating water is equipped with the dashpot, the inside bottom surface of dashpot is equipped with the seal groove. The above patents suffer from the following disadvantages: the gas is not subjected to impurity removal treatment during the recovery of the high-temperature gas, so that the inside of the pipeline is easily blocked, and the problems cannot be solved by the above patent.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a waste heat treatment device for mechanical production.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a waste heat treatment device for mechanical production, includes air compressor machine body and box, and the output welding of air compressor machine body has the breather pipe, and the other end and the box of breather pipe are linked together, still includes the edulcoration device, the edulcoration device includes the outer container, and the outer container passes through the bolt fastening on one side inner wall of box, the outer container is connected with the breather pipe, and the welding has first miscellaneous board and the miscellaneous board of second removal on the top inner wall of outer container, and it has a plurality of air vents to open on the outer wall of first miscellaneous board and the miscellaneous board of second removal, and first miscellaneous board of removing highly is less than the height that the miscellaneous board of second removal, the inside of box is equipped with filter equipment and heat transfer device.
As a still further scheme of the invention: the bottom welding of outer container has the row's of miscellaneous pipe, and the top of outer container has the vacuum pump through the bolt fastening, and the bottom and the outer container of vacuum pump are linked together, and the output welding of vacuum pump has the outlet duct.
As a still further scheme of the invention: the filtering device comprises a water box, the water box is fixed on the inner wall of the bottom of the box body through bolts, an arc-shaped screen plate is welded on the inner wall of one side of the water box, a plurality of fixing rods are fixed on the inner wall of one side of the water box through bolts, a plurality of filter plates are welded on one side of the fixing rods, a first temperature sensor is fixed on one side of the water box through bolts, and a water outlet pipe is welded on one side of the water box.
As a still further scheme of the invention: the filter is the arc structure, and one side of filter is opened has a plurality of through-holes.
As a still further scheme of the invention: the bottom of the air outlet pipe is positioned below the arc-shaped screen plate, and the height of the middle position of the arc-shaped screen plate is greater than that of the edge position.
As a still further scheme of the invention: heat transfer device includes the heat transfer case, and the heat transfer case passes through the bolt fastening on the bottom inner wall of box, the top welding of heat transfer case has the connecting pipe, and the other end of connecting pipe and the top welding of water box, the bottom welding of connecting pipe has the house steward, the bottom welding of house steward has a plurality of branch pipes, the bottom of branch pipe has the active carbon granule ball through the bolt fastening, the welding has a plurality of conducting strips on the outer wall of branch pipe, there is the second temperature sensor through the bolt fastening on one side inner wall of heat transfer case, the welding has the baffle on one side inner wall of heat transfer case, the baffle is located the top of active carbon granule.
As a still further scheme of the invention: the outer wall of the heat exchange box is connected with a winding pipe in a winding mode, the bottom of the winding pipe is connected with an exhaust pipe, and the exhaust pipe is welded on one side of the heat exchange box.
As a still further scheme of the invention: one side welding of box has two inlet tubes, and the other end of two inlet tubes welds with water box and heat transfer case respectively, all is equipped with the solenoid valve on inlet tube and the blast pipe.
As a still further scheme of the invention: a control panel is fixed on the outer wall of the box body through bolts, a processor is fixed on one side of the control panel through bolts, and an observation window is formed in one side of the box body.
The invention has the beneficial effects that:
1. the gas can be filtered and decontaminated through the arrangement of the first impurity removing plate and the second impurity removing plate, so that impurities with large volume are prevented from entering a rear pipeline to block the pipeline, the gas flows upwards, the V-shaped design improves the filtering surface of the impurities, the impurities fall back to the lower part of the outer box in the filtering process, the impurity removing work is convenient, and the height of the first impurity removing plate is smaller than that of the second impurity removing plate, so that the impurities can be conveniently cleaned;
2. the gas discharged by the gas outlet pipe can be decomposed through the arrangement of the arc-shaped screen plate, so that the subsequent more sufficient filtering work is facilitated, the streamlined design of the filter plate can fully play a role in filtering impurities in the washing and filtering process under the condition of not influencing the gas circulation, the filtering and impurity removing effects of the device are improved, and the filter plate has a certain heat absorption and heat conduction effect and is convenient for the recovery work of waste heat;
3. the branch pipes and the heat conducting fins are matched with each other to conduct more sufficient heat conduction, heat exchange is conducted between the branch pipes and water in the heat exchange box, the waste heat recovery efficiency of the device is improved, the winding pipes can be arranged at low temperature, the heat exchange device is directly connected with the connecting pipe when heat exchange is not needed, gas is directly discharged, and the working efficiency of the device is improved;
4. the air can be purified by arranging the activated carbon particle balls, so that peculiar smell is prevented from being discharged into the atmosphere, and the environment is protected;
5. can cooperate with the treater through first temperature sensor and second temperature sensor's setting, detect the temperature, make things convenient for recycle hot water.
The device has the advantages that the parts which are not involved are the same as or can be realized by adopting the prior art, the gas filtering and impurity removing device can filter and remove impurities of gas, the impurities with larger volume are prevented from entering a rear pipeline to block the pipeline, the gas flows upwards, the V-shaped design improves the filtering surface of the impurities, the impurities fall back to the lower part of an outer box in the filtering process, the impurity removing work is convenient, and the height of the first impurity removing plate is smaller than that of the second impurity removing plate, so that the impurities can be conveniently cleaned.
Drawings
FIG. 1 is a schematic cross-sectional structural diagram of a waste heat treatment device for mechanical production according to the present invention;
FIG. 2 is a schematic structural diagram of an impurity removal device of a waste heat treatment device for mechanical production according to the present invention;
FIG. 3 is a schematic structural diagram of a filtering device of a waste heat treatment device for mechanical production according to the present invention;
FIG. 4 is a schematic structural diagram of a heat exchange device of a waste heat treatment device for mechanical production according to the present invention;
FIG. 5 is a schematic perspective view of a waste heat treatment device for mechanical production according to the present invention;
FIG. 6 is a schematic view of a partial three-dimensional structure of an impurity removal device of a waste heat treatment device for mechanical production according to the present invention;
FIG. 7 is a schematic partial perspective view of a filtering device of a waste heat treatment device for mechanical production according to the present invention;
fig. 8 is a schematic signal flow structure diagram of a waste heat treatment device for mechanical production according to the present invention.
In the figure: 1 air compressor body, 2 breather pipes, 3 boxes, 4 edulcoration devices, 401 outer boxes, 402 first edulcoration board, 403 second edulcoration board, 404 vacuum pump, 405 row's miscellaneous pipe, 5 filter equipment, 501 water box, 502 outlet duct, 503 arc otter board, 504 first temperature sensor, 505 dead lever, 506 filter board, 507 outlet pipe, 6 heat transfer device, 601 heat transfer case, 602 house steward pipe, 603 branch pipes, 604 conducting strip, 605 take-around pipe, 606 second temperature sensor, 607 baffle, 608 active carbon granule ball, 7 blast pipe, 8 inlet tube, 9 connecting pipes, 10 control panels, 11 observation windows.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-8, a waste heat treatment device for mechanical production comprises an air compressor body 1 and a box body 3, wherein an air vent pipe 2 is welded at the output end of the air compressor body 1, the other end of the air vent pipe 2 is communicated with the box body 3, the waste heat treatment device 4 further comprises a waste heat removal device 4, the waste heat removal device 4 comprises an outer box 401, the outer box 401 is fixed on the inner wall of one side of the box body 3 through bolts, the outer box 401 is connected with the air vent pipe 2, a first waste removal plate 402 and a second waste removal plate 403 are welded on the inner wall of the top of the outer box 401, a plurality of vent holes are formed in the outer walls of the first waste removal plate 402 and the second waste removal plate 403, gas is filtered and removed through the first waste removal plate 402 and the second waste removal plate, impurities with large volume are prevented from entering a rear pipeline to block the pipeline, the gas flows upwards, the V-shaped design improves the filtering surface of the impurities, and the impurities fall back to the lower part of, the edulcoration work is conveniently carried out, and the height that highly is less than second miscellaneous board 403 of first miscellaneous board 402 of removing can make things convenient for the clearance of impurity like this, and the inside of box 3 is equipped with filter equipment 5 and heat transfer device 6.
In the invention, the bottom of the outer box 401 is welded with a impurity discharging pipe 405, the top of the outer box 401 is fixed with a vacuum pump 404 through a bolt for rapidly transmitting gas, the bottom of the vacuum pump 404 is communicated with the outer box 401, and the output end of the vacuum pump 404 is welded with an air outlet pipe 502 for exhausting.
The filtering device 5 comprises a water box 501, the water box 501 is fixed on the inner wall of the bottom of the box body 3 through bolts, an arc-shaped screen 503 is welded on the inner wall of one side of the water box 501, gas discharged from the gas outlet pipe 502 is decomposed through the arc-shaped screen 503, so that more sufficient filtering work at the back is facilitated, a plurality of fixing rods 505 are fixed on the inner wall of one side of the water box 501 through bolts, a plurality of filter plates 506 are welded on one side of the fixing rods 505, a first temperature sensor 504 is fixed on one side of the water box 501 through bolts, a water outlet pipe 507 is welded on one side of the water box 501, the filter plates 506 are of an arc-shaped structure, a plurality of through holes are formed in one side of each filter plate 506, the bottom of the gas outlet pipe 502 is positioned below the arc-shaped screen 503, the height of the middle position of the arc-shaped screen 503 is greater than that of the edge position, and the, the device improves the filtering and impurity removing effects, has certain heat absorption and heat conduction effects, and is convenient for waste heat recovery.
The heat exchange device 6 comprises a heat exchange box 601, the heat exchange box 601 is fixed on the inner wall of the bottom of the box body 3 through bolts, a connecting pipe 9 is welded on the top of the heat exchange box 601, the other end of the connecting pipe 9 is welded with the top of the water box 501, a header pipe 602 is welded at the bottom of the connecting pipe 9, a plurality of branch pipes 603 are welded at the bottom of the header pipe 602, activated carbon particle balls 608 are fixed at the bottom of the branch pipes 603 through bolts, a plurality of heat conducting fins 604 are welded on the outer wall of the branch pipes 603, the branch pipes 603 and the heat conducting fins 604 are matched with each other to conduct more sufficient heat conduction, heat exchange is conducted with water in the heat exchange box 601, the waste heat recovery efficiency of the device is improved, a second temperature sensor 606 is fixed on the inner wall of one side of the heat exchange box 601 through bolts, a partition plate 607 is welded on the inner wall of one side of the heat, prevent the odor from being discharged into the atmosphere, and is green and environment-friendly.
Around connecing on heat transfer case 601's the outer wall have around taking over pipe 605, and around the bottom of taking over pipe 605 to be connected with blast pipe 7, the welding of blast pipe 7 is in one side of heat transfer case 601, the welding of one side of box 3 has two inlet tubes 8, and the other end of two inlet tubes 8 respectively with water box 501 and heat transfer case 601 welding, all be equipped with the solenoid valve on inlet tube 8 and the blast pipe 7, there is control panel 10 through the bolt fastening on box 3's the outer wall, and there is the treater one side of control panel 10 through the bolt fastening, cooperate with the treater through first temperature sensor 504 and second temperature sensor 606, detect the temperature, make things convenient for recycle hot water, the model of treater is ARM9TDMI, open one side of box 3 has observation window 11.
When the air compressor is used, air of the air compressor body 1 enters the outer box 401 through the vent pipe 2, the air is filtered and decontaminated through the first impurity removing plate 402 and the second impurity removing plate 403, impurities with large volume are prevented from entering a rear pipeline to block the pipeline, the air circulates upwards, the V-shaped design improves the filtering surface of the impurities, the impurities fall back below the outer box 401 in the filtering process to facilitate impurity removal work, the height of the first impurity removing plate 402 is smaller than that of the second impurity removing plate 403, so that the impurities can be cleaned conveniently, the air discharged from the air outlet pipe 502 is decomposed through the arc-shaped screen 503, more sufficient filtering work at the rear is facilitated, during filtering, the streamlined design of the filter plate 506 can fully play a role in filtering the impurity in the water washing filtering process without influencing the air circulation, and has a certain heat absorption and conduction effect, make things convenient for the recovery work of waste heat, then mutually support through branch pipe 603 and conducting strip 604, carry out more abundant heat conduction, carry out the heat exchange with the water in the heat transfer case 601, finally, gas purifies gas through activated carbon particle ball 608, prevents that it from discharging to have the peculiar smell in the atmosphere, and the afforestation environmental protection detects the temperature through first temperature sensor 504 and second temperature sensor 606, responds to through the treater, makes things convenient for recycle hot water.
In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", "first", "second", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. A waste heat treatment device for mechanical production comprises an air compressor body (1) and a box body (3), wherein an output end of the air compressor body (1) is provided with a vent pipe (2), the other end of the vent pipe (2) is communicated with the box body (3), characterized in that the device also comprises an impurity removing device (4), the impurity removing device (4) comprises an outer box (401), the outer box (401) is fixed on the inner wall of one side of the box body (3) through bolts, the outer box (401) is connected with the vent pipe (2), a first impurity removing plate (402) and a second impurity removing plate (403) are arranged on the inner wall of the top of the outer box (401), a plurality of vent holes are formed on the outer walls of the first impurity removing plate (402) and the second impurity removing plate (403), the height of the first impurity removing plate (402) is smaller than that of the second impurity removing plate (403), and a filtering device (5) and a heat exchange device (6) are arranged in the box body (3).
2. The waste heat treatment device for mechanical production according to claim 1, wherein the bottom of the outer box (401) is provided with a waste discharge pipe (405), the top of the outer box (401) is provided with a vacuum pump (404), the bottom of the vacuum pump (404) is communicated with the outer box (401), and the output end of the vacuum pump (404) is provided with an air outlet pipe (502).
3. The waste heat treatment device for mechanical production as claimed in claim 2, wherein the filtering device (5) comprises a water box (501), the water box (501) is fixed on the inner wall of the bottom of the box body (3) through bolts, an arc-shaped screen (503) is arranged on the inner wall of one side of the water box (501), a plurality of fixing rods (505) are arranged on the inner wall of one side of the water box (501), a plurality of filter plates (506) are arranged on one side of the fixing rods (505), a first temperature sensor (504) is arranged on one side of the water box (501), and a water outlet pipe (507) is arranged on one side of the water box (501).
4. The waste heat treatment device for mechanical production as claimed in claim 3, wherein the filter plate (506) is of an arc structure, and one side of the filter plate (506) is provided with a plurality of through holes.
5. The waste heat treatment device for mechanical production according to claim 4, wherein the bottom of the air outlet pipe (502) is located below the arc-shaped screen plates (503), and the height of the middle position of the arc-shaped screen plates (503) is greater than that of the edge position.
6. Waste heat treatment device for mechanical production according to claim 3, characterized in that the heat exchange device (6) comprises a heat exchange tank (601), the heat exchange box (601) is fixed on the inner wall of the bottom of the box body (3) through bolts, the top of the heat exchange box (601) is provided with a connecting pipe (9), and the other end of connecting pipe (9) and the top welding of water box (501), the bottom of connecting pipe (9) is equipped with house steward (602), the bottom of house steward (602) is equipped with a plurality of branch pipes (603), the bottom of branch pipe (603) is equipped with activated carbon granule ball (608), be equipped with a plurality of conducting strips (604) on the outer wall of branch pipe (603), be equipped with second temperature sensor (606) on one side inner wall of heat transfer case (601), be equipped with baffle (607) on one side inner wall of heat transfer case (601), baffle (607) are located the top of activated carbon granule ball (608).
7. The waste heat treatment device for mechanical production according to claim 6, wherein a winding pipe (605) is wound on the outer wall of the heat exchange box (601), an exhaust pipe (7) is connected to the bottom of the winding pipe (605), and the exhaust pipe (7) is welded on one side of the heat exchange box (601).
8. The waste heat treatment device for mechanical production according to claim 7, wherein one side of the box body (3) is provided with two water inlet pipes (8), the other ends of the two water inlet pipes (8) are respectively welded with the water box (501) and the heat exchange box (601), and the water inlet pipes (8) and the exhaust pipes (7) are respectively provided with electromagnetic valves.
9. The waste heat treatment device for mechanical production according to claim 1, wherein a control panel (10) is arranged on the outer wall of the box body (3), a processor is arranged on one side of the control panel (10), and an observation window (11) is arranged on one side of the box body (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910772355.5A CN110595246A (en) | 2019-08-21 | 2019-08-21 | Waste heat treatment device for mechanical production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910772355.5A CN110595246A (en) | 2019-08-21 | 2019-08-21 | Waste heat treatment device for mechanical production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110595246A true CN110595246A (en) | 2019-12-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910772355.5A Pending CN110595246A (en) | 2019-08-21 | 2019-08-21 | Waste heat treatment device for mechanical production |
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| CN (1) | CN110595246A (en) |
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| CN108662924A (en) * | 2018-05-17 | 2018-10-16 | 友源（长兴）环保科技有限公司 | A kind of waste-heat recovery device of environmental protection |
| CN109373343A (en) * | 2018-10-25 | 2019-02-22 | 肖江江 | A kind of industrial combustion boiler waste-heat recovery device |
| CN210741206U (en) * | 2019-08-21 | 2020-06-12 | 长春理工大学 | Waste heat treatment device for mechanical production |
-
2019
- 2019-08-21 CN CN201910772355.5A patent/CN110595246A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205860248U (en) * | 2016-05-16 | 2017-01-04 | 河北航安智能科技有限公司 | Wall-mounted permanent oxygen air cleaner |
| CN206837576U (en) * | 2017-04-06 | 2018-01-05 | 四川大宇中和农业科技发展有限公司 | The fuel gas filter of biomass carbonization |
| CN207203770U (en) * | 2017-09-09 | 2018-04-10 | 江西信亚合金材料有限公司 | A kind of broken apart recovery dust arrester of lead accumulator |
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