CN108979706A - A kind of mine adsorption air device for reducing dust - Google Patents

A kind of mine adsorption air device for reducing dust Download PDF

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Publication number
CN108979706A
CN108979706A CN201810705022.6A CN201810705022A CN108979706A CN 108979706 A CN108979706 A CN 108979706A CN 201810705022 A CN201810705022 A CN 201810705022A CN 108979706 A CN108979706 A CN 108979706A
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China
Prior art keywords
bevel gear
drive cavity
rotating bar
mine
air device
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Pending
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CN201810705022.6A
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Chinese (zh)
Inventor
王世华
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Individual
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Individual
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Priority to CN201810705022.6A priority Critical patent/CN108979706A/en
Publication of CN108979706A publication Critical patent/CN108979706A/en
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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F5/00Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
    • E21F5/20Drawing-off or depositing dust

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Treating Waste Gases (AREA)

Abstract

The invention discloses a kind of mine adsorption air device for reducing dust, including adsorbent chamber, dust hood and drive cavity;The drive cavity is fixedly mounted on bottom plate upper end, adsorbent chamber is set to the upper end of drive cavity, the upper end of the drive cavity is additionally provided with dust hood, the setting of dust hood l-shaped, and upright end is protruded into drive cavity through the upper wall of drive cavity and is rotatablely connected with the upper wall of drive cavity.It is of the invention novel in design, the rotation of third rotating bar is driven by the engagement of bevel gear A and bevel gear B when motor rotates, third rotating bar drives the second rotating bar toward renaturation positive and negative rotation campaign by the effect of incomplete bevel gear and bevel gear C, second rotating bar drives dust hood to swing toward renaturation by the engagement of bevel gear D and bevel gear E, to improve dust suction range, the agitating shaft and stirring rod of setting are stirred the water in adsorbent chamber, to improve the adsorption effect of water, increase air cleaning effect.

Description

A kind of mine adsorption air device for reducing dust
Technical field
The present invention relates to field of environment protection equipment, specifically a kind of mine adsorption air device for reducing dust.
Background technique
A large amount of dust, miner's operation on the one hand meeting in the environment of gathering dust can be generated in underground coal mine production process Safety accident is induced because eyesight substantially reduces, on the other hand can also aggravate the risk that miner violates pneumoconiosis.For a long time, mine Underground is mainly achieved the purpose that using atomizing de-dusting dust-proof.Atomizing de-dusting apparatus mainly selects circular arc according to drift section structure Shape spraying device and linear type spraying device, such device is mainly fixed at the top of tunnel, and since fixed point is more, therefore it is installed Movement is time-consuming and laborious, affects dustfall efficiency;Required high altitude operation is easy by fountain depositing dust during the installation process simultaneously Muddy water is left on ground, is unfavorable for the progress of work.
Summary of the invention
The purpose of the present invention is to provide a kind of mine adsorption air device for reducing dust, to solve in above-mentioned background technique The problem of proposition.
To achieve the above object, the invention provides the following technical scheme:
A kind of mine adsorption air device for reducing dust, including adsorbent chamber, dust hood and drive cavity;The drive cavity is fixedly mounted In bottom plate upper end, adsorbent chamber is set to the upper end of drive cavity, and the upper end of the drive cavity is additionally provided with dust hood, and dust hood is at L Type setting, upright end are protruded into drive cavity through the upper wall of drive cavity and are rotatablely connected with the upper wall of drive cavity, be located at described Bevel gear D, bevel gear D and the bevel gear for being fixedly mounted on the second rotating bar right end are fixedly installed on dust hood in drive cavity E engagement, the left end of the second rotating bar are fixedly installed with bevel gear C, and the left side upper and lower side of bevel gear C is symmetrically arranged with incomplete cone The position with teeth of gear, two incomplete bevel gears is arranged in a staggered manner, and incomplete bevel gear is fixed in third rotating bar, and described The output shaft of upper wall of the upper end of three rotating bars through drive cavity and the engagement by bevel gear A and bevel gear B and motor Rotation connection, the bevel gear A are fixed on the output shaft of motor, and bevel gear B is fixed on the upper end of third rotating bar.
As a further solution of the present invention: it is provided in the drive cavity and pumps mechanism, pumping mechanism includes connecting rod, Piston cylinder, catch bar and piston, piston cylinder are connected to by conduit and rotary joint with dust hood, and piston cylinder passes through another conduit It is connected to adsorbent chamber.
As the present invention further scheme: it is provided with piston in the piston cylinder, the right end of piston and catch bar One end is fixedly connected, the other end of catch bar through the side wall of piston cylinder and hinged with one end of connecting rod, connecting rod it is another End is rotatably connected on crankshaft, and the crankshaft is fixedly connected with third rotating bar.
As further scheme of the invention: being provided with check valve in two conduits.
As further scheme of the invention: being provided with agitating shaft in the adsorbent chamber, the right end of agitating shaft is through suction It attached chamber and is fixedly connected with the first rotating bar, the first rotating bar is rotatablely connected by the output shaft of transmission belt and motor, is located at institute It states and multiple groups stirring rod is installed on agitating shaft in adsorbent chamber.
As further scheme of the invention: being provided with venthole in the adsorbent chamber.
As further scheme of the invention: the lower end of the bottom plate is symmetrically installed with wheel, the upper end left side of bottom plate Promotion handle is installed.
As the present invention further scheme: it is provided with piston in the piston cylinder, the right end of piston and catch bar One end is fixedly connected, the other end of catch bar through the side wall of piston cylinder and hinged with one end of connecting rod, connecting rod it is another End is rotatably connected at the eccentric position of turntable, and the rear end shaft of turntable passes through the engagement of bevel gear F and bevel gear G and the The rotation connection of three rotating bars.
As further scheme of the invention: the bevel gear F is fixedly connected with turntable, and bevel gear G and third rotate Bar is fixedly connected.
Compared with prior art, the beneficial effects of the present invention are: the present invention is novel in design, motor passes through bevel gear when rotating The engagement of A and bevel gear B drive the rotation of third rotating bar, and third rotating bar passes through incomplete bevel gear and bevel gear C Effect drives the second rotating bar toward renaturation positive and negative rotation campaign, and the second rotating bar passes through the engagement band of bevel gear D and bevel gear E Dynamic dust hood swings toward renaturation, to improve dust suction range, the agitating shaft and stirring rod of setting are to the water in adsorbent chamber It is stirred, to improve the adsorption effect of water, increases air cleaning effect by absorption type depositing dust and effectively avoid spray The problem of leaching depositing dust causes work influence.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of mine adsorption air device for reducing dust.(embodiment one)
Fig. 2 is the schematic enlarged-scale view in mine adsorption air device for reducing dust at A.(embodiment one)
Fig. 3 is the mine structural schematic diagram that mechanism is pumped in adsorption air device for reducing dust.(embodiment one)
Fig. 4 is the structural schematic diagram of mine adsorption air device for reducing dust.(embodiment two)
Fig. 5 is the side view of mine adsorption air device for reducing dust turntable.(embodiment two)
In figure: 1- bottom plate, 2- wheel, 3- push handle, 4- adsorbent chamber, 5- venthole, 6- stirring rod, 7- agitating shaft, 8- first Rotating bar, 9- motor, the incomplete bevel gear of 10- bevel gear A, 11- bevel gear B, 12-, the second rotating bar of 13- bevel gear C, 14-, 15- dust hood, 16- bevel gear D, 17- bevel gear E, 18- drive cavity, 19- crankshaft, 20- connecting rod, 21- piston cylinder, 22- are pushed Bar, 23- piston, 24- third rotating bar, 25- turntable, 26- bevel gear F, 27- bevel gear G.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
Embodiment one
Please refer to Fig. 1~3, in the embodiment of the present invention, a kind of mine adsorption air device for reducing dust, including adsorbent chamber 4, dust suction It covers 15, drive cavity 18 and pumps mechanism;The drive cavity 18 is fixedly mounted on 1 upper end of bottom plate, and adsorbent chamber 4 is set to drive cavity 18 Upper end, the upper end of drive cavity 18 is additionally provided with dust hood 15, and 15 l-shaped of dust hood setting, upright end runs through drive cavity 18 Upper wall protrude into drive cavity 18 and be rotatablely connected with the upper wall of drive cavity 18, on the dust hood 15 in the drive cavity 18 It is fixedly installed with bevel gear D16, bevel gear D16 and the bevel gear E17 for being fixedly mounted on 14 right end of the second rotating bar to engage, second The left end of rotating bar 14 is fixedly installed with bevel gear C13, and the left side upper and lower side of bevel gear C13 is symmetrically arranged with incomplete bevel gear 12, the position with teeth of two incomplete bevel gears 12 is arranged in a staggered manner, and incomplete bevel gear 12 is fixed in third rotating bar 24, institute State the upper wall of the upper end of third rotating bar 24 through drive cavity 18 and the engagement by bevel gear A10 and bevel gear B11 with The output shaft of motor 9 is rotatablely connected, and the bevel gear A10 is fixed on the output shaft of motor 9, and bevel gear B11 is fixed on third The upper end of rotating bar 24 drives third rotating bar 24 by the engagement of bevel gear A10 and bevel gear B11 when motor 9 rotates Rotation, third rotating bar 24 by the second rotating bar of the effect of incomplete bevel gear 12 and bevel gear C13 drive 14 toward renaturation just Return motion, the second rotating bar 14 drive dust hood 15 toward renaturation or so by the engagement of bevel gear D16 and bevel gear E17 It swings, to improve dust suction range.
It is provided in the drive cavity 18 and pumps mechanism, pumping mechanism includes connecting rod 20, piston cylinder 21,22 and of catch bar Piston 23, piston cylinder 21 are connected to by conduit and rotary joint with dust hood 15, and piston cylinder 21 passes through another conduit and absorption Chamber 4 is connected to, and is provided with check valve in two conduits, piston 23, the right end of piston 23 are provided in the piston cylinder 21 It is fixedly connected with one end of catch bar 22, the other end of catch bar 22 runs through the side wall of piston cylinder 21 and one end with connecting rod 20 Hingedly, the other end of connecting rod 20 is rotatably connected on crankshaft 19, and the crankshaft is fixedly connected with third rotating bar 24, and third turns Band dynamic crankshaft 19 rotates when lever 24 rotates, and crankshaft 19 is by connecting rod 20 and the zone of action piston 23 of catch bar 22 in piston It is moved left and right in cylinder 21 toward renaturation, to realize the process pumped.
Agitating shaft 7 is provided in the adsorbent chamber 4, the right end of agitating shaft 7 is through adsorbent chamber 4 and solid with the first rotating bar 8 Fixed connection, the first rotating bar 8 are rotatablely connected by the output shaft of transmission belt and motor 9, pass through the first rotating bar when motor 9 rotates 8 drive agitating shaft 7 to rotate, and are equipped with multiple groups stirring rod 6 on agitating shaft 7 in the adsorbent chamber 4, stirring rod 6 is in agitating shaft 7 Under the action of the water in adsorbent chamber 4 is stirred, to improve water to the adsorption effect of particle in gas, and then improve dust suction Effect.
It is provided with venthole 5 in the adsorbent chamber 4, the gas after absorption is discharged by venthole 5.
The lower end of the bottom plate 1 is symmetrically installed with wheel 2, is equipped on the left of the upper end of bottom plate 1 and pushes handle 3, thus side Just the device is mobile.
Embodiment two
Fig. 2 ~ 5 are please referred to, embodiment two and the distinguishing characteristics of embodiment one are, the other end rotation connection of the connecting rod 20 At the eccentric position of turntable 25, the rear end shaft of turntable 25 passes through the engagement and third of bevel gear F26 and bevel gear G27 Rotating bar 24 is rotatablely connected, and the bevel gear F26 is fixedly connected with turntable 25, bevel gear G27 and the fixed company of third rotating bar 24 It connects.
It should be strongly noted that the control device of motor and motor, rotary joint in the application, check valve is existing skill The application of art, dust hood can swing and the interior agitating shaft being arranged of adsorbent chamber is the innovative point of the application, effectively solve The fixed problem for causing dust collection efficiency low with particle effect difference in water adsorbed gas of dust suction range of having determined.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art The other embodiments being understood that.

Claims (9)

1. a kind of mine adsorption air device for reducing dust, including adsorbent chamber (4), dust hood (15) and drive cavity (18);It is described Drive cavity (18) is fixedly mounted on bottom plate (1) upper end, and adsorbent chamber (4) is set to the upper end of drive cavity (18), which is characterized in that institute The upper end for stating drive cavity (18) is additionally provided with dust hood (15), and dust hood (15) l-shaped setting, upright end runs through drive cavity (18) upper wall is protruded into drive cavity (18) and is rotatablely connected with the upper wall of drive cavity (18), is located in the drive cavity (18) Dust hood is fixedly installed with bevel gear D(16 on (15)), bevel gear D(16) and it is fixedly mounted on the second rotating bar (14) right end Bevel gear E(17) engagement, the left end of the second rotating bar (14) is fixedly installed with bevel gear C(13), bevel gear C(13) left side on Lower end is symmetrically arranged with incomplete bevel gear (12), and the position with teeth of two incomplete bevel gears (12) is arranged in a staggered manner, not exclusively Bevel gear (12) is fixed on third rotating bar (24), and the upper wall of drive cavity (18) is run through in the upper end of the third rotating bar (24) And pass through bevel gear A(10) and bevel gear B(11) engagement and motor (9) output shaft rotation connection, the bevel gear A (10) it is fixed on the output shaft of motor (9), bevel gear B(11) it is fixed on the upper end of third rotating bar (24).
2. a kind of mine adsorption air device for reducing dust according to claim 1, which is characterized in that the drive cavity (18) it is provided in and pumps mechanism, pumping mechanism includes connecting rod (20), piston cylinder (21), catch bar (22) and piston (23), Piston cylinder (21) is connected to by conduit and rotary joint with dust hood (15), and piston cylinder (21) passes through another conduit and adsorbent chamber (4) it is connected to.
3. a kind of mine adsorption air device for reducing dust according to claim 2, which is characterized in that the piston cylinder (21) in be provided with piston (23), the right end of piston (23) is fixedly connected with one end of catch bar (22), catch bar (22) it is another Through the side wall of piston cylinder (21) and hinged with one end of connecting rod (20), the other end of connecting rod (20) is rotatably connected on for one end On crankshaft (19), the crankshaft is fixedly connected with third rotating bar (24).
4. a kind of mine adsorption air device for reducing dust according to claim 2, which is characterized in that two conduits Inside it is provided with check valve.
5. a kind of mine adsorption air device for reducing dust according to claim 1, which is characterized in that the adsorbent chamber (4) it being provided with agitating shaft (7) in, the right end of agitating shaft (7) is fixedly connected through adsorbent chamber (4) and with the first rotating bar (8), the One rotating bar (8) is rotatablely connected by transmission belt and the output shaft of motor (9), is located on the adsorbent chamber (4) interior agitating shaft (7) Multiple groups stirring rod (6) are installed.
6. a kind of mine adsorption air device for reducing dust according to claim 5, which is characterized in that the adsorbent chamber (4) venthole (5) are provided on.
7. a kind of mine adsorption air device for reducing dust according to claim 1, which is characterized in that the bottom plate (1) Lower end be symmetrically installed with wheel (2), be equipped on the left of the upper end of bottom plate (1) and push handle (3).
8. a kind of mine adsorption air device for reducing dust according to claim 1, which is characterized in that the piston cylinder (21) in be provided with piston (23), the right end of piston (23) is fixedly connected with one end of catch bar (22), catch bar (22) it is another Through the side wall of piston cylinder (21) and hinged with one end of connecting rod (20), the other end of connecting rod (20) is rotatably connected on for one end At the eccentric position of turntable (25), the rear end shaft of turntable (25) passes through bevel gear F(26) and bevel gear G(27) engagement It is rotatablely connected with third rotating bar (24).
9. a kind of mine adsorption air device for reducing dust according to claim 8, which is characterized in that the bevel gear F (26) it is fixedly connected, bevel gear G(27 with turntable (25)) it is fixedly connected with third rotating bar (24).
CN201810705022.6A 2018-07-02 2018-07-02 A kind of mine adsorption air device for reducing dust Pending CN108979706A (en)

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CN201810705022.6A CN108979706A (en) 2018-07-02 2018-07-02 A kind of mine adsorption air device for reducing dust

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Application Number Priority Date Filing Date Title
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109603362A (en) * 2019-02-22 2019-04-12 湖南科技学院 A kind of air based on water absorption principle removes haze device
CN111497022A (en) * 2020-06-11 2020-08-07 山东鼎鲁建筑有限公司 Foam concrete production equipment and method
CN111878154A (en) * 2020-08-05 2020-11-03 合肥尔同新能源有限公司 Portable dust keeper of headwork face for coal mine
CN112302368A (en) * 2020-10-23 2021-02-02 无为县永晟土石方工程有限公司 Dust removal and suction device for house disassembly
CN112377031A (en) * 2020-11-25 2021-02-19 江西科技学院 Lifting component and glass lifter for new energy automobile
CN113399245A (en) * 2021-05-10 2021-09-17 桑野 Material screening plant for construction
CN113521937A (en) * 2020-04-14 2021-10-22 骆用玲 Atmosphere pollution prevention and control equipment
CN117862969A (en) * 2024-03-12 2024-04-12 赣州海盛硬质合金有限公司 Hard alloy cutter edging equipment

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107952308A (en) * 2017-12-07 2018-04-24 张宁 A kind of engineering site device for reducing dust
CN108086109A (en) * 2017-12-26 2018-05-29 共同科技开发有限公司 A kind of town road asphalt paving shakes leveling device
CN108104030A (en) * 2017-12-25 2018-06-01 郑州默尔电子信息技术有限公司 A kind of municipal administration gardens road dust cleaning plant
CN108179979A (en) * 2018-01-03 2018-06-19 大连赢得科技有限公司 It is a kind of that there is the rock drilling device of depositing dust
CN108180031A (en) * 2017-12-27 2018-06-19 郑州格瑞塔电子信息技术有限公司 A kind of dust suction depositing dust integrated device for mine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107952308A (en) * 2017-12-07 2018-04-24 张宁 A kind of engineering site device for reducing dust
CN108104030A (en) * 2017-12-25 2018-06-01 郑州默尔电子信息技术有限公司 A kind of municipal administration gardens road dust cleaning plant
CN108086109A (en) * 2017-12-26 2018-05-29 共同科技开发有限公司 A kind of town road asphalt paving shakes leveling device
CN108180031A (en) * 2017-12-27 2018-06-19 郑州格瑞塔电子信息技术有限公司 A kind of dust suction depositing dust integrated device for mine
CN108179979A (en) * 2018-01-03 2018-06-19 大连赢得科技有限公司 It is a kind of that there is the rock drilling device of depositing dust

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109603362A (en) * 2019-02-22 2019-04-12 湖南科技学院 A kind of air based on water absorption principle removes haze device
CN113521937A (en) * 2020-04-14 2021-10-22 骆用玲 Atmosphere pollution prevention and control equipment
CN111497022A (en) * 2020-06-11 2020-08-07 山东鼎鲁建筑有限公司 Foam concrete production equipment and method
CN111878154A (en) * 2020-08-05 2020-11-03 合肥尔同新能源有限公司 Portable dust keeper of headwork face for coal mine
CN112302368A (en) * 2020-10-23 2021-02-02 无为县永晟土石方工程有限公司 Dust removal and suction device for house disassembly
CN112377031A (en) * 2020-11-25 2021-02-19 江西科技学院 Lifting component and glass lifter for new energy automobile
CN113399245A (en) * 2021-05-10 2021-09-17 桑野 Material screening plant for construction
CN117862969A (en) * 2024-03-12 2024-04-12 赣州海盛硬质合金有限公司 Hard alloy cutter edging equipment
CN117862969B (en) * 2024-03-12 2024-05-28 赣州海盛硬质合金有限公司 Hard alloy cutter edging equipment

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