CN108339823B - Portable workshop particulate matter absorbing device - Google Patents
Portable workshop particulate matter absorbing device Download PDFInfo
- Publication number
- CN108339823B CN108339823B CN201810156087.XA CN201810156087A CN108339823B CN 108339823 B CN108339823 B CN 108339823B CN 201810156087 A CN201810156087 A CN 201810156087A CN 108339823 B CN108339823 B CN 108339823B
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- CN
- China
- Prior art keywords
- motor
- fixedly connected
- vehicle body
- particulate matter
- dust
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- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Landscapes
- Refuse-Collection Vehicles (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses a movable workshop particulate matter absorbing device which comprises a vehicle body, wherein wheels are connected to four feet of the vehicle body through rotating shafts, the vehicle body is fixedly connected with a first motor, the other end of a connecting rod is fixedly connected with a sliding block through a mounting seat, a dust storage box is arranged in the middle of the vehicle body, a vacuum pump is arranged on one side of the dust storage box, a PLC (programmable logic controller) is arranged at the front of the vehicle body, and the first motor, a second motor, a third motor, a fourth motor and the vacuum pump are electrically connected with the PLC through wires.
Description
Technical Field
The invention relates to the technical field of environmental protection mechanical equipment, in particular to a movable workshop particulate matter absorbing device.
Background
Some production workshops, especially grinding, polishing and other process workshops, generate a large amount of dust in the production process, so that the environment is polluted, the health of field personnel is damaged, and the potential safety hazard is also caused, for example, the dust of inflammables can cause explosion accidents when meeting open fire.
The existing protective measures are simple to wear the mask, and the effect is not great. Large dust removing equipment is adopted, the occupied space is large, the investment and operation cost is large, and small enterprises are hard to bear. The main dust removing equipment used for treating dust pollution in workshops at present is a bag type dust remover. However, bag filters have the following disadvantages: the service life of the filter bag is limited, the cost for replacing the filter bag is high, and the workload is high; the changed filter bags contain harmful substances such as heavy metals and the like, generally require on-site landfill, and have great difficulty in subsequent treatment work; because the dust discharge capacity is large, the dust particles are different in size, the filter bag cannot capture dust all the time, so that a large amount of dust is discharged into the outdoor air, the environment is polluted, the human body is endangered, and the extra burden of enterprises is increased. For this purpose, a mobile plant particle absorber is proposed.
Disclosure of Invention
The invention aims to provide a movable workshop particulate matter absorbing device which can be used for rapidly absorbing and removing fine particulate matters in a workshop, and is high in working efficiency and low in cost, so that the problems in the background technology are solved.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a portable workshop particulate matter absorbing device, includes the automobile body, four feet departments of automobile body have the wheel through rotation axis connection, automobile body and first motor fixed connection, first motor passes through driving gear and driven gear drive connection, driven gear and spliced pole fixed connection, the bottom of spliced pole and the thrust bearing fixed connection in the rotation base, the top and the carousel fixed connection of spliced pole, the carousel passes through fixing bolt and steelframe fixed connection, the top of steelframe is equipped with the second motor, the output shaft of second motor passes through shaft coupling and first lead screw fixed connection, first lead screw and lead screw nut transmission are connected, lead screw nut passes through connecting bolt and movable frame fixed connection, be equipped with second lead screw and guide arm on the movable frame, the second lead screw passes the output shaft of movable frame and third motor and passes through shaft coupling fixed connection, the one end at movable frame, the second lead screw passes through slider and drive connection, be equipped with the fourth motor on the mounting bracket, the output shaft and the band pulley fixed connection of fourth motor, the band pulley passes through band pulley and is equipped with the second motor, the second motor is equipped with the end of connecting rod and the dust bin, the dust collector is equipped with the dust collector, the dust collector is equipped with the connecting rod with the air pump through the end of connecting rod, the PLC.
Preferably, the connecting post and the driven gear are provided with key grooves, and the connecting post and the driven gear are fixedly connected through keys.
Preferably, a stepping motor is arranged at the bottom of the vehicle body and is in transmission connection with the wheels.
Preferably, the dust hood is communicated with the dust storage box and the vacuum pump through pipelines.
Preferably, the mounting frame and the mounting seat are fixedly connected with the sliding block through bolts, and a combined bearing is arranged in the mounting seat.
Preferably, the first motor, the second motor, the third motor and the fourth motor are stepper motors.
Preferably, a thrust bearing is arranged in the middle of the upper end surface of the turntable, and the first screw rod is fixedly connected with the turntable through the thrust bearing.
Preferably, the dust hood is a shell made of metal materials, and the section area of the dust collection opening is larger than the section area of the bottom.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention has flexible movement, reasonable structure and large working range;
2. the movement of the vehicle body is carried out by driving the wheels by the stepping motor, so that the vehicle is stable and reliable, has high travelling speed and is easy to control;
3. lifting of the dust hood is carried out by the second motor driving the movable frame, and translation of the dust hood is carried out by the third motor driving the sliding block;
4. the rotation of the dust hood is carried out by the connecting rod driven by the fourth motor, the rotation range is large, and the adaptability is wide.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a front view of the present invention;
fig. 3 is a schematic structural view of the dust hood of the present invention.
In the figure: the vacuum cleaner comprises a vehicle body 1, wheels 2, a first motor 3, a driving gear 4, a rotating base 5, a connecting column 6, a driven gear 7, a turntable 8, a fixing bolt 9, a steel frame 10, a first screw rod 11, a second motor 12, a screw rod nut 13, a connecting bolt 14, a movable frame 15, a third motor 16, a second screw rod 17, a guide rod 18, a slide block 19, a mounting frame 20, a fourth motor 21, an upper belt pulley 22, a driving belt 23, a lower belt pulley 24, a connecting rod 25, a mounting seat 26, a dust hood 27, a dust storage box 28, a PLC controller 29 and a vacuum pump 30.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-3, the present invention provides a technical solution: the movable workshop particulate matter absorbing device comprises a vehicle body 1, wheels 2 are connected to four feet of the vehicle body 1 through rotating shafts, the vehicle body 1 is fixedly connected with a first motor 3, the first motor 3 is in transmission connection with a driven gear 7 through a driving gear 4, the driven gear 7 is fixedly connected with a connecting column 6, the bottom of the connecting column 6 is fixedly connected with a thrust bearing in a rotating base 5, the top of the connecting column 6 is fixedly connected with a turntable 8, the turntable 8 is fixedly connected with a steel frame 10 through a fixing bolt 9, the top of the steel frame 10 is provided with a second motor 12, an output shaft of the second motor 12 is fixedly connected with a first screw rod 11 through a coupler, the first screw rod 11 is in transmission connection with a screw rod nut 13, the screw rod nut 13 is fixedly connected with a movable frame 15 through a connecting bolt 14, a second screw rod 17 and a guide rod 18 are arranged on the movable frame 15, the second lead screw 17 passes through the movable frame 15 and is fixedly connected with an output shaft of the third motor 16 through a coupler, the third motor 16 is arranged at one end of the movable frame 15, the second lead screw 17 is in transmission connection with the mounting frame 20 through the sliding block 19, a fourth motor 21 is arranged on the mounting frame 20, an output shaft of the fourth motor 21 is fixedly connected with the upper belt pulley 22, the upper belt pulley 22 is in transmission connection with the lower belt pulley 24 through the driving belt 23, the lower belt pulley 24 is fixedly connected with the connecting rod 25, a dust hood 27 is arranged at the tail end of the connecting rod 25, the other end of the connecting rod 25 is fixedly connected with the sliding block 19 through the mounting seat 26, a dust storage box 28 is arranged in the middle of the vehicle body 1, a vacuum pump 30 is arranged at one side of the dust storage box 28, a PLC (programmable logic controller) 29 is arranged at the front part of the vehicle body 1, and the first motor 3, the second motor 12 are in transmission connection with the lower belt pulley 24 The third motor 16, the fourth motor 21 and the vacuum pump 30 are electrically connected with the PLC controller 29 through wires.
Specifically, key grooves are formed in the connecting column 6 and the driven gear 7, the connecting column 6 and the driven gear 7 are fixedly connected through keys, and the keys are common flat keys.
Specifically, a stepping motor is arranged at the bottom of the vehicle body 1 and is in transmission connection with the wheels 2, and the wheels 2 are provided with brakes.
Specifically, the dust hood 27 is communicated with the dust storage tank 28 and the vacuum pump 30 through a pipeline, and the pipeline can be a PVC transparent hose.
Specifically, the mounting frame 20 and the mounting seat 26 are fixedly connected with the sliding block 19 through bolts, a combined bearing is arranged in the mounting seat 26, and an inner ring of the combined bearing is fixedly connected with the connecting rod 25.
Specifically, the first motor 3, the second motor 12, the third motor 16 and the fourth motor 21 are stepper motors, and may be selected to be 57 stepper motors.
Specifically, a thrust bearing is arranged in the middle of the upper end surface of the turntable 8, the first screw rod 11 is fixedly connected with the turntable 8 through the thrust bearing, and the type of the thrust bearing is generally a thrust angular contact ball bearing.
Specifically, the dust hood 27 is a housing made of metal, and the cross-sectional area of the dust suction opening is larger than the cross-sectional area of the bottom, and the bottom of the dust hood 27 is communicated with the dust storage tank 28 through a pipeline.
Working principle: in use, the wheels 2 are stopped and held stationary by the brake according to the detection result of the air detection device in the workshop. The first motor 3 is started, the driving gear 4 and the driven gear 7 drive the connecting column 6 to rotate, and then the steel frame 10 drives the movable frame 11 to rotate, so that the dust hood 27 rotates in the horizontal plane by taking the rotating base 5 as the center of a circle. The second motor 12 is started to drive the first screw rod 11 to rotate, and then the screw rod nut 13 drives the movable frame 15 to move up and down, so that the dust hood 27 reaches the designated height. The third motor 16 is started to drive the second screw rod 17 to rotate, and then the slider 19 drives the connecting rod 25 to move, so that the dust hood 27 translates in the horizontal plane. The fourth motor 21 is started, the connecting rod 25 is driven to rotate through the transmission component, the dust hood 27 is driven to rotate in a vertical plane and is adjusted to an optimal dust collection position, and the vacuum pump 30 enables air containing particulate matters in the workshop to enter the dust storage box 28 along the dust hood 27 and the connecting pipeline, so that the particulate matters in the workshop are sucked and removed at the fastest speed.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a portable workshop particulate matter absorbing device, includes automobile body (1), its characterized in that: the four feet of the vehicle body (1) are fixedly connected with wheels (2) through rotating shafts, the vehicle body (1) is fixedly connected with a first motor (3), the first motor (3) is in transmission connection with a driven gear (7) through a driving gear (4), the driven gear (7) is fixedly connected with a connecting column (6), the bottom of the connecting column (6) is fixedly connected with a thrust bearing in a rotating base (5), the top of the connecting column (6) is fixedly connected with a rotating disc (8), the rotating disc (8) is fixedly connected with a steel frame (10) through a fixing bolt (9), the top end of the steel frame (10) is provided with a second motor (12), an output shaft of the second motor (12) is fixedly connected with a first screw (11) through a coupler, the first screw (11) is in transmission connection with a screw nut (13), the screw nut (13) is fixedly connected with a moving frame (15) through a connecting bolt (14), a second screw (17) and a motor (18) are arranged on the moving frame (15), the second motor (17) is fixedly connected with the third motor (16) through the third motor (16) at one end of the third motor (16), the second screw rod (17) is in transmission connection with the mounting frame (20) through the sliding block (19), a fourth motor (21) is arranged on the mounting frame (20), an output shaft of the fourth motor (21) is fixedly connected with the upper belt pulley (22), the upper belt pulley (22) is in transmission connection with the lower belt pulley (24) through the transmission belt (23), the lower belt pulley (24) is fixedly connected with the connecting rod (25), a dust hood (27) is arranged at the tail end of the connecting rod (25), the other end of the connecting rod (25) is fixedly connected with the sliding block (19) through the mounting seat (26), a dust storage box (28) is arranged in the middle of the vehicle body (1), a vacuum pump (30) is arranged on one side of the dust storage box (28), a PLC (29) is arranged at the front of the vehicle body (1), and the first motor (3), the second motor (12), the third motor (16), the fourth motor (21) and the vacuum pump (30) are electrically connected with the PLC (29) through wires.
The connecting column (6) and the driven gear (7) are respectively provided with a key slot, and the connecting column (6) and the driven gear (7) are fixedly connected through keys;
the bottom of the vehicle body (1) is provided with a stepping motor which is in transmission connection with the wheels (2);
the dust hood (27) is communicated with the dust storage box (28) and the vacuum pump (30) through pipelines.
2. A mobile shop particulate matter absorbing device according to claim 1, characterized in that: the mounting frame (20) and the mounting seat (26) are fixedly connected with the sliding block (19) through bolts, and a combined bearing is arranged in the mounting seat (26).
3. A mobile shop particulate matter absorbing device according to claim 1, characterized in that: the first motor (3), the second motor (12), the third motor (16) and the fourth motor (21) are all stepping motors.
4. A mobile shop particulate matter absorbing device according to claim 1, characterized in that: the middle part of the upper end surface of the turntable (8) is provided with a thrust bearing, and the first screw rod (11) is fixedly connected with the turntable (8) through the thrust bearing.
5. A mobile shop particulate matter absorbing device according to claim 1, characterized in that: the dust suction cover (27) is a shell made of metal materials, and the section area of the dust suction opening is larger than the section area of the bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810156087.XA CN108339823B (en) | 2018-02-24 | 2018-02-24 | Portable workshop particulate matter absorbing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810156087.XA CN108339823B (en) | 2018-02-24 | 2018-02-24 | Portable workshop particulate matter absorbing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108339823A CN108339823A (en) | 2018-07-31 |
| CN108339823B true CN108339823B (en) | 2023-08-04 |
Family
ID=62960313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810156087.XA Active CN108339823B (en) | 2018-02-24 | 2018-02-24 | Portable workshop particulate matter absorbing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108339823B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108994286A (en) * | 2018-09-17 | 2018-12-14 | 广德亚太汽车智能制动系统有限公司 | A kind of production of automobile brake disc pours anti-splashing structure |
| CN109365465A (en) * | 2018-12-07 | 2019-02-22 | 威海天宇新材料科技有限公司 | A kind of chemical industry dust-extraction unit |
| CN114504909A (en) * | 2022-02-25 | 2022-05-17 | 北京华鼎众星建筑工程有限公司 | Interior decoration dust fall clarification plant |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4103350A (en) * | 1976-05-10 | 1978-07-25 | Astec Industries, Inc. | Method of reducing emission of particulate matter |
| US4211490A (en) * | 1976-05-10 | 1980-07-08 | Astec, Industries, Inc. | Drum mix asphalt plant with fiber filter dust collector |
| GB9513354D0 (en) * | 1995-06-30 | 1995-09-06 | Lanton Park Ltd | Process and apparatus for recycling airborne particulate matter |
| US6387271B1 (en) * | 1995-09-14 | 2002-05-14 | Pall Corporation | Method for separating solid particulates from a liquid |
| CN106582233A (en) * | 2017-02-15 | 2017-04-26 | 福建龙净环保股份有限公司 | Dry desulfurization and denitrification dust removal system for catalytic cracking regeneration flue gas |
| CN206199852U (en) * | 2016-11-13 | 2017-05-31 | 曲靖市福麟彩印包装有限责任公司 | A kind of dust separation system of machine room |
| CN106862225A (en) * | 2017-03-09 | 2017-06-20 | 刘云娟 | A kind of chemical dust absorption treating device |
| CN206444981U (en) * | 2017-01-09 | 2017-08-29 | 清远富强汽车部件有限公司 | A kind of electric automobile accessory production dust shield |
| CN206631385U (en) * | 2017-04-19 | 2017-11-14 | 合肥工业大学 | A kind of efficient airborne dust processing system of automobile-used self-adjustable |
| CN206980354U (en) * | 2017-06-29 | 2018-02-09 | 江苏欣舟化工科技有限公司 | A kind of chemical workshop automatic dust removing apparatus |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2433041A (en) * | 2005-12-08 | 2007-06-13 | Eminox Ltd | Cleaning a vehicle exhaust system filter |
| AU2014230871C1 (en) * | 2013-03-11 | 2017-11-23 | James Hardie Technology Limited | A cutting apparatus |
| CN204817337U (en) * | 2015-06-24 | 2015-12-02 | 国网山东省电力公司济南供电公司 | Communication equipment dust collector |
| CN205463525U (en) * | 2016-01-25 | 2016-08-17 | 武平泓鑫工业技术开发有限公司 | Electric automobile is suction hood for accessory |
| CN208162255U (en) * | 2018-02-24 | 2018-11-30 | 新昌县七星街道盈捷机械厂 | A kind of movable type workshop particulate adsorbent device |
-
2018
- 2018-02-24 CN CN201810156087.XA patent/CN108339823B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4103350A (en) * | 1976-05-10 | 1978-07-25 | Astec Industries, Inc. | Method of reducing emission of particulate matter |
| US4211490A (en) * | 1976-05-10 | 1980-07-08 | Astec, Industries, Inc. | Drum mix asphalt plant with fiber filter dust collector |
| GB9513354D0 (en) * | 1995-06-30 | 1995-09-06 | Lanton Park Ltd | Process and apparatus for recycling airborne particulate matter |
| US6387271B1 (en) * | 1995-09-14 | 2002-05-14 | Pall Corporation | Method for separating solid particulates from a liquid |
| CN206199852U (en) * | 2016-11-13 | 2017-05-31 | 曲靖市福麟彩印包装有限责任公司 | A kind of dust separation system of machine room |
| CN206444981U (en) * | 2017-01-09 | 2017-08-29 | 清远富强汽车部件有限公司 | A kind of electric automobile accessory production dust shield |
| CN106582233A (en) * | 2017-02-15 | 2017-04-26 | 福建龙净环保股份有限公司 | Dry desulfurization and denitrification dust removal system for catalytic cracking regeneration flue gas |
| CN106862225A (en) * | 2017-03-09 | 2017-06-20 | 刘云娟 | A kind of chemical dust absorption treating device |
| CN206631385U (en) * | 2017-04-19 | 2017-11-14 | 合肥工业大学 | A kind of efficient airborne dust processing system of automobile-used self-adjustable |
| CN206980354U (en) * | 2017-06-29 | 2018-02-09 | 江苏欣舟化工科技有限公司 | A kind of chemical workshop automatic dust removing apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108339823A (en) | 2018-07-31 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20230703 Address after: 213000 Donghua science and Technology Pioneer Park, HUTANG Town, Wujin District, Changzhou City, Jiangsu Province Applicant after: JIANGSU DAWNING PHARMACEUTICAL CO.,LTD. Address before: No. 25, Dongbaoshan, Wangjiayuan Village, Yulin Street, Xinchang County, Shaoxing, Zhejiang Province 312521 Applicant before: XINCHANG COUNTY YULIN STREET ZHIXI MACHINERY FACTORY |
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