CN110743302A - Indoor air-exchanging dust-removing environment-friendly equipment for coal yard - Google Patents
Indoor air-exchanging dust-removing environment-friendly equipment for coal yard Download PDFInfo
- Publication number
- CN110743302A CN110743302A CN201911079196.7A CN201911079196A CN110743302A CN 110743302 A CN110743302 A CN 110743302A CN 201911079196 A CN201911079196 A CN 201911079196A CN 110743302 A CN110743302 A CN 110743302A
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- filter frame
- controller
- dust
- fan
- coal yard
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- 239000003245 coal Substances 0.000 title claims abstract description 21
- 239000000428 dust Substances 0.000 claims abstract description 36
- 238000001179 sorption measurement Methods 0.000 claims abstract description 32
- 230000008021 deposition Effects 0.000 claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 238000009825 accumulation Methods 0.000 claims description 4
- 230000007613 environmental effect Effects 0.000 claims description 2
- 239000002817 coal dust Substances 0.000 abstract description 21
- 238000009423 ventilation Methods 0.000 abstract description 8
- 238000001914 filtration Methods 0.000 abstract description 6
- 238000004140 cleaning Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2279/00—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses
- B01D2279/50—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses for air conditioning
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses indoor ventilation and dust removal environment-friendly equipment for a coal yard, which comprises a fan, a filter frame and an ash deposition hopper, wherein the filter frame is arranged below the fan; the air door comprises an outer frame, wherein a louver is arranged above the outer frame, and the louver is hinged with the outer frame through a pin shaft. Has the advantages that: the electrostatic adsorption net is used for adsorbing and filtering coal dust in the air, so that indoor air is purified, and the indoor safety of a coal yard is ensured; the pushing mechanism pushes the hammer head to move up and down to beat the electrostatic adsorption net, so that dust on the surface of the electrostatic adsorption net is removed, and the filtering effect of the electrostatic adsorption net is ensured; the dust deposition hopper is driven to move by the driving device, and the dust cleaned by the electrostatic adsorption net is collected, so that manual cleaning is avoided.
Description
Technical Field
The invention relates to the field of coal yard dust removal, in particular to indoor ventilation and dust removal environmental protection equipment for a coal yard.
Background
Coal dust is generated in the production process of a coal yard, and is extremely harmful, so that the coal dust not only pollutes the environment, but also can be harmful to human health after being sucked by human bodies, and when the coal dust in the air reaches a certain concentration, explosion can be caused by fire.
The applicant finds that at least the following technical problems exist in the prior art: the office in the coal yard is independent space usually, and the staff in the office does not wear respiratory mask usually, and because the office is linked together with the external air in coal yard, consequently leads to the coal dust to get into in the office along with the air easily to arouse the concentration gathering of coal dust in the office, because the office space is narrow and small, consequently the concentration of coal dust can rise fast, thereby makes the office produce the potential safety hazard.
Disclosure of Invention
The invention aims to solve the problems and provide the indoor ventilation and dust removal environmental-friendly equipment for the coal yard so as to solve the technical problems that potential safety hazards are easily caused due to overhigh coal dust concentration in the office of the coal yard in the prior art. The preferable technical scheme in the technical schemes provided by the invention comprises the following steps: when the content of the coal dust in the indoor air is high, the coal dust can be adsorbed through the electrostatic adsorption net, so that the indoor air is purified, and the like, and the technical effects are described in detail below.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides indoor ventilation and dust removal environment-friendly equipment for a coal yard, which comprises a fan, a filter frame and an ash deposition hopper, wherein the filter frame is arranged below the fan;
the air door comprises an outer frame, wherein a louver is arranged above the outer frame and hinged with the outer frame through a pin shaft, a connecting rod is arranged on the side surface of the louver, the other end of the connecting rod is hinged with a pulling rod, a telescopic motor is arranged at the end part of the pulling rod and connected with the pulling rod through a coupler, and the telescopic motor is electrically connected with a controller;
the top of the air door is provided with a first air quality detector, and the first air quality detector is electrically connected with the controller;
a vent hole is formed in the side wall of the fan, a control valve is installed at an orifice of the vent hole and electrically connected with the controller, a return air pipe is arranged on the outer side of the control valve, and a filter screen is arranged in the return air pipe;
an electrostatic adsorption net is arranged in the filter frame and is electrically connected with the controller, a hammer head is arranged above the electrostatic adsorption net, a push rod is connected above the hammer head and penetrates through the side wall of the filter frame to extend to the outer side, and the push rod is connected with a pushing mechanism;
the pushing mechanism comprises a top plate, a cam and a driving shaft, the top plate is fixedly connected with the ejector rod, a guide rod is fixedly connected above the top plate, a spring is arranged on the outer circular surface of the guide rod, a fixing plate is arranged above the spring and fixedly connected with the outer side wall of the filter frame, the cam is arranged below the top plate and mounted on the driving shaft, one end of the driving shaft is fixedly connected with a pushing motor, the other end of the driving shaft is mounted on the filter frame through a bearing seat, and the pushing motor is electrically connected with the controller;
the controller is arranged on one side of the pushing mechanism, a wireless annunciator is arranged below the controller, and the wireless annunciator is electrically connected with the controller;
the filter frame is characterized in that a driving device is arranged on the other side face of the filter frame and comprises a connecting shaft, gears and a rotating motor, the two ends of the connecting shaft are mounted on the filter frame through brackets, the gears are further mounted at the two ends of the connecting shaft, the outer side of the end part of the connecting shaft is connected with the rotating motor through a coupler, and the rotating motor is mounted on the side wall of the filter frame through bolts;
the bottom of the ash deposition bucket is funnel-shaped, racks are mounted on two sides of the ash deposition bucket, the racks are meshed with the gears, a photoelectric switch is arranged at the end of one rack, and the photoelectric switch is electrically connected with the controller; a sliding groove is formed in the lateral lower portion of the rack and can be in sliding fit with the filter frame;
and a second air quality detector is arranged below the dust hopper and is electrically connected with the controller.
When the second air quality detector detects that the concentration of indoor coal dust is higher than a set value of the controller, the controller controls the fan to rotate forward, the electrostatic adsorption net is electrified, the control valve is controlled to be opened, indoor air is sucked into the filter frame under the action of the fan, the coal dust in the air is adsorbed and filtered through the electrostatic adsorption net, and residual air passes through the fan, enters the air return pipe through the control valve, is filtered through the filter screen again and then is discharged into the room, so that the indoor air is purified; when the surface of the electrostatic adsorption net adsorbs more coal dust, the user end can send a deashing instruction to the controller through the wireless remote control equipment, the controller controls the rotating motor to start after receiving the instruction, drives the gear to rotate, thereby the gear wheel pushes the rack to move, the dust hopper automatically moves to the lower part of the filter frame, when the photoelectric switch detects the gear, the rotating motor stops rotating, and the pushing motor acts to drive the cam to rotate, thereby the top plate does up-and-down reciprocating motion, the hammer head is driven by the ejector rod to hammer the electrostatic adsorption net, the coal dust adsorbed on the surface of the electrostatic adsorption net falls into the dust deposition bucket, after the cleaning is finished, the pushing motor stops acting, and meanwhile, the rotating motor rotates reversely, so that the ash deposition bucket is transferred to the side face of the filter frame; when ventilation and air exchange are needed indoors, and meanwhile, when the first air quality detector detects that the content of coal dust in outdoor air is lower than the concentration set during ventilation and air exchange in the controller, the telescopic motor retracts, the louver is turned upwards through the pull rod and the connecting rod, the fan rotates reversely, external air is sucked into the filter frame through the air door, at the moment, the control valve is in a closed state, and the external air is filtered through the electrostatic adsorption net and then discharged into the room, so that the indoor air is replaced.
Preferably, the fan is a blade type positive and negative rotation fan.
Preferably, the guide rod is a T-shaped shaft.
Preferably, the outer circular surface of the cam is tangent to the bottom surface of the top plate.
Preferably, the pushing motor is mounted on the filter frame through a fixing frame.
Preferably, the wireless annunciator is a WiFi connector or a bluetooth connector.
Preferably, the bottom of the filtering frame is provided with a slide block folded inwards, and the slide block can extend into the chute to enable the ash deposition bucket to slide along the filtering frame.
Has the advantages that: 1. according to the invention, the electrostatic adsorption net is used for adsorbing and filtering coal dust in the air, so that indoor air is purified, and the indoor safety of a coal yard is ensured;
2. the pushing mechanism pushes the hammer head to move up and down to beat the electrostatic adsorption net, so that dust on the surface of the electrostatic adsorption net is removed, and the filtering effect of the electrostatic adsorption net is ensured;
3. the dust deposition hopper is driven to move by the driving device, and the dust cleaned by the electrostatic adsorption net is collected, so that manual cleaning is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a front view of the present invention;
FIG. 2 is a left side view of the present invention;
FIG. 3 is a right side view of the present invention;
FIG. 4 is a top view of the fan of the present invention;
FIG. 5 is a top view of the damper of the present invention;
fig. 6 is an enlarged view of the ejector mechanism of the present invention.
The reference numerals are explained below:
1. a damper; 101. louver blades; 102. a telescopic motor; 103. a pull rod; 104. a connecting rod; 105. an outer frame; 2. a fan; 3. a filter frame; 4. an ash accumulation hopper; 401. a photoelectric switch; 402. a rack; 403. a chute; 5. a drive device; 501. a rotating electric machine; 502. a connecting shaft; 503. a gear; 504. a support; 6. a second air quality detector; 7. an electrostatic adsorption net; 8. a filter screen; 9. a hammer head; 10. a pushing mechanism; 1001. a cam; 1002. a drive shaft; 1003. a top plate; 1004. a spring; 1005. a fixing plate; 1006. a guide bar; 1007. a pushing motor; 11. a top rod; 12. a controller; 13. a wireless annunciator; 14. a control valve; 15. a return air duct; 16. a first air quality detector.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Referring to fig. 1-6, the invention provides an indoor air-changing and dust-removing environment-friendly device for a coal yard, which comprises a fan 2, a filter frame 3 and an ash deposition hopper 4, wherein the filter frame 3 is arranged below the fan 2, the ash deposition hopper 4 is arranged below the filter frame 3, the ash deposition hopper 4 is connected with the filter frame 3 in a sliding manner, and an air door 1 is arranged above the fan 2;
the air door 1 comprises an outer frame 105, a louver 101 is arranged above the outer frame 105, the louver 101 is hinged with the outer frame 105 through a pin shaft, a connecting rod 104 is arranged on the side face of the louver 101, the other end of the connecting rod 104 is hinged with a drawing rod 103, a telescopic motor 102 is arranged at the end part of the drawing rod 103, the telescopic motor 102 is connected with the drawing rod 103 through a coupler, and the telescopic motor 102 is electrically connected with a controller 12;
a first air quality detector 16 is arranged at the top of the air door 1, and the first air quality detector 16 is electrically connected with the controller 12;
a vent hole is formed in the side wall of the fan 2, a control valve 14 is installed at the orifice of the vent hole, the control valve 14 is electrically connected with the controller 12, an air return pipe 15 is arranged on the outer side of the control valve 14, and a filter screen 8 is arranged in the air return pipe 15;
an electrostatic adsorption net 7 is arranged in the filter frame 3, the electrostatic adsorption net 7 is electrically connected with a controller 12, a hammer 9 is arranged above the electrostatic adsorption net 7, an ejector rod 11 is connected above the hammer 9, and the ejector rod 11 penetrates through the side wall of the filter frame 3 to extend to the outer side and is connected with a pushing mechanism 10;
the pushing mechanism 10 comprises a top plate 1003, a cam 1001 and a driving shaft 1002, the top plate 1003 is fixedly connected with the ejector rod 11, a guide rod 1006 is fixedly connected above the top plate 1003, a spring 1004 is arranged on the outer circular surface of the guide rod 1006, so that the guide rod 1006 is conveniently pushed and pressed through the elastic force of the spring 1004, the bottom surface of the guide rod 1006 is always attached to the outer circular surface of the cam 1001, a fixing plate 1005 is arranged above the spring 1004, the fixing plate 1005 is fixedly connected with the outer side wall of the filter frame 3, the cam 1001 is arranged below the top plate 1003, the cam 1001 is arranged on the driving shaft 1002, one end of the driving shaft 1002 is fixedly connected with a pushing motor 1007, the other end of the driving shaft 1002 is arranged on the;
a controller 12 is arranged at one side of the pushing mechanism 10, a wireless annunciator 13 is arranged below the controller 12, and the wireless annunciator 13 is electrically connected with the controller 12;
the other side surface of the filter frame 3 is provided with a driving device 5, the driving device 5 comprises a connecting shaft 502, a gear 503 and a rotating motor 501, two ends of the connecting shaft 502 are mounted on the filter frame 3 through a bracket 504, the gears 503 are further mounted at two ends of the connecting shaft 502, the outer side of the end part of the connecting shaft 502 is connected with the rotating motor 501 through a coupling, and the rotating motor 501 is mounted on the side wall of the filter frame 3 through bolts;
the bottom of the dust hopper 4 is funnel-shaped, racks 402 are respectively arranged on two sides of the dust hopper 4, the racks 402 are meshed with the gear 503, a photoelectric switch 401 is arranged at the end of one rack 402, and the photoelectric switch 401 is electrically connected with the controller 12; a sliding groove 403 is arranged below the side of the rack 402 and can be in sliding fit with the filter frame 3;
and a second air quality detector 6 is arranged below the dust hopper 4, and the second air quality detector 6 is electrically connected with the controller 12.
As an alternative embodiment, the fan 2 is a blade-type forward/reverse rotation fan, and the arrangement is convenient for the controller 12 to control the forward/reverse rotation of the fan 2.
The guide rod 1006 is a T-shaped shaft, and is disposed so as to prevent the guide rod 1006 from being removed from the fixing plate 1005 by the elastic force of the spring 1004.
The outer circular surface of the cam 1001 is tangent to the bottom surface of the top plate 1003, and the arrangement is convenient for the top plate 1003 to reciprocate up and down along with the overturning of the cam 1001.
The pushing motor 1007 is mounted on the filter frame 3 through a fixing frame, and the pushing motor 1007 is fixed conveniently by the arrangement.
The wireless annunciator 13 is a WiFi connector or a bluetooth connector, and is configured to facilitate a user to send a control signal to the controller 12 through the wireless annunciator 13 by using a wireless remote control device.
The bottom of the filter frame 3 is provided with a slide block folded inwards and can extend into the chute 403, so that the dust hopper 4 slides along the filter frame 3, and the arrangement is convenient for suspending the dust hopper 4 below the filter frame 3 and driving the dust hopper 4 to slide along the bottom of the filter frame 3 by the driving device 5 through the rack 402.
By adopting the structure, in an initial state, the air door 1 is in a closed state, the dust hopper 4 is positioned at one side of the filter frame 3, when the second air quality detector 6 detects that the concentration of indoor coal dust is higher than a set value of the controller 12, the controller 12 controls the fan 2 to rotate forward, simultaneously the electrostatic adsorption net 7 is electrified, the control valve 14 is controlled to be opened, indoor air is sucked into the filter frame 3 under the action of the fan 2, the coal dust in the air is adsorbed and filtered on the electrostatic adsorption net 7, the residual air passes through the fan 2, enters the return air pipe 15 through the control valve 14, is filtered by the filter screen 8 again and then is discharged into a room, and thus the indoor air is purified; when the surface of the electrostatic adsorption net 7 adsorbs more coal dust, a user end can send a dust cleaning instruction to the controller 12 through a wireless remote control device, after the controller 12 receives the instruction, the controller controls the rotary motor 501 to start to drive the gear 503 to rotate, so that the gear 503 pushes the rack 402 to move, the dust hopper 4 automatically moves to the lower part of the filter frame 3, when the photoelectric switch 401 detects the gear 503, the rotary motor 501 stops rotating, the pushing motor 1007 acts to drive the cam 1001 to rotate, so that the top plate 1003 reciprocates up and down, the ejector rod 11 drives the hammer 9 to hammer the electrostatic adsorption net 7, so that the coal dust adsorbed on the surface of the electrostatic adsorption net 7 falls into the dust hopper 4, after cleaning, the pushing motor 1007 stops acting, and the rotary motor 501 rotates reversely, so that the dust hopper 4 is transferred to the side surface of the filter frame 3; when ventilation and air exchange are needed indoors, and meanwhile, when the first air quality detector 16 detects that the content of coal dust in outdoor air is lower than the concentration set in the controller 12 during ventilation and air exchange, the telescopic motor 102 retracts, the louver 101 is turned upwards through the pull rod 103 and the connecting rod 104, the fan 2 rotates reversely, external air is sucked into the filter frame 3 through the air door 1, the control valve 14 is in a closed state at the moment, and the external air is filtered through the electrostatic adsorption net 7 and then is discharged into the room, so that the indoor air is replaced.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (7)
1. The utility model provides an indoor dust removal environmental protection equipment of taking a breath of coal yard which characterized in that: the dust collector comprises a fan (2), a filter frame (3) and a dust accumulation hopper (4), wherein the filter frame (3) is arranged below the fan (2), the dust accumulation hopper (4) is arranged below the filter frame (3), the dust accumulation hopper (4) is connected with the filter frame (3) in a sliding manner, and an air door (1) is arranged above the fan (2);
the air door (1) comprises an outer frame (105), a louver (101) is arranged above the outer frame (105), the louver (101) is hinged to the outer frame (105) through a pin shaft, a connecting rod (104) is arranged on the side face of the louver (101), the other end of the connecting rod (104) is hinged to a drawing rod (103), a telescopic motor (102) is arranged at the end of the drawing rod (103), the telescopic motor (102) is connected with the drawing rod (103) through a coupler, and the telescopic motor (102) is electrically connected with a controller (12);
a first air quality detector (16) is arranged at the top of the air door (1), and the first air quality detector (16) is electrically connected with the controller (12);
a vent hole is formed in the side wall of the fan (2), a control valve (14) is installed at the orifice of the vent hole, the control valve (14) is electrically connected with the controller (12), an air return pipe (15) is arranged on the outer side of the control valve (14), and a filter screen (8) is arranged in the air return pipe (15);
an electrostatic adsorption net (7) is arranged in the filter frame (3), the electrostatic adsorption net (7) is electrically connected with the controller (12), a hammer head (9) is arranged above the electrostatic adsorption net (7), a push rod (11) is connected above the hammer head (9), and the push rod (11) penetrates through the side wall of the filter frame (3) to extend to the outer side and is connected with a pushing mechanism (10);
the pushing mechanism (10) comprises a top plate (1003), a cam (1001) and a driving shaft (1002), the top plate (1003) is fixedly connected with the ejector rod (11), a guide rod (1006) is fixedly connected to the upper portion of the top plate (1003), a spring (1004) is arranged on the outer circular surface of the guide rod (1006), a fixing plate (1005) is arranged on the upper portion of the spring (1004), the fixing plate (1005) is fixedly connected with the outer side wall of the filter frame (3), the cam (1001) is arranged below the top plate (1003), the cam (1001) is installed on the driving shaft (1002), one end of the driving shaft (1002) is fixedly connected with a pushing motor, the other end of the driving shaft is installed on the filter frame (3) through a bearing seat, and the pushing motor is electrically connected with the controller (12);
the controller (12) is arranged on one side of the pushing mechanism (10), the wireless annunciator (13) is arranged below the controller (12), and the wireless annunciator (13) is electrically connected with the controller (12);
the filter frame is characterized in that a driving device (5) is arranged on the other side face of the filter frame (3), the driving device (5) comprises a connecting shaft (502), a gear (503) and a rotating motor (501), the two ends of the connecting shaft (502) are installed on the filter frame (3) through supports (504), the gears (503) are further installed on the two ends of the connecting shaft (502), the outer side of the end part of the connecting shaft (502) is connected with the rotating motor (501) through a coupler, and the rotating motor (501) is installed on the side wall of the filter frame (3) through bolts;
the bottom of the ash deposition bucket (4) is funnel-shaped, racks (402) are mounted on two side edges of the ash deposition bucket (4), the racks (402) are meshed with the gears (503), a photoelectric switch (401) is arranged at the end of one rack (402), and the photoelectric switch (401) is electrically connected with the controller (12); a sliding groove (403) is formed below the side of the rack (402) and can be in sliding fit with the filter frame (3);
and a second air quality detector (6) is arranged below the ash deposition hopper (4), and the second air quality detector (6) is electrically connected with the controller (12).
2. The indoor air exchange and dust removal environment-friendly equipment for the coal yard as claimed in claim 1, characterized in that: the fan (2) is a blade type positive and negative rotation fan.
3. The indoor air exchange and dust removal environment-friendly equipment for the coal yard as claimed in claim 1, characterized in that: the guide rod (1006) is a T-shaped shaft.
4. The indoor air exchange and dust removal environment-friendly equipment for the coal yard as claimed in claim 1, characterized in that: the outer circular surface of the cam (1001) is tangent to the bottom surface of the top plate (1003).
5. The indoor air exchange and dust removal environment-friendly equipment for the coal yard as claimed in claim 1, characterized in that: the pushing motor is arranged on the filter frame (3) through a fixing frame.
6. The indoor air exchange and dust removal environment-friendly equipment for the coal yard as claimed in claim 1, characterized in that: the wireless annunciator (13) is a WiFi connector or a Bluetooth connector.
7. The indoor air exchange and dust removal environment-friendly equipment for the coal yard as claimed in claim 1, characterized in that: the bottom of the filter frame (3) is provided with a slide block which is folded inwards and can extend into the chute (403), so that the ash deposition hopper (4) slides along the filter frame (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911079196.7A CN110743302A (en) | 2019-11-07 | 2019-11-07 | Indoor air-exchanging dust-removing environment-friendly equipment for coal yard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911079196.7A CN110743302A (en) | 2019-11-07 | 2019-11-07 | Indoor air-exchanging dust-removing environment-friendly equipment for coal yard |
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| Publication Number | Publication Date |
|---|---|
| CN110743302A true CN110743302A (en) | 2020-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911079196.7A Pending CN110743302A (en) | 2019-11-07 | 2019-11-07 | Indoor air-exchanging dust-removing environment-friendly equipment for coal yard |
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| CN (1) | CN110743302A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111888843A (en) * | 2020-08-10 | 2020-11-06 | 夏琨 | Workshop air adsorption treatment device |
| CN112576538A (en) * | 2020-12-29 | 2021-03-30 | 王翔 | Fan air door opening and closing device |
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Cited By (3)
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| CN111888843B (en) * | 2020-08-10 | 2021-04-13 | 江苏环保产业技术研究院股份公司 | Workshop air adsorption treatment device |
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