CN213838656U - Coal mining dryer air outlet position regulation and control device - Google Patents

Coal mining dryer air outlet position regulation and control device Download PDF

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Publication number
CN213838656U
CN213838656U CN202022072517.5U CN202022072517U CN213838656U CN 213838656 U CN213838656 U CN 213838656U CN 202022072517 U CN202022072517 U CN 202022072517U CN 213838656 U CN213838656 U CN 213838656U
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air outlet
fixedly connected
air
pipeline
box
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Expired - Fee Related
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CN202022072517.5U
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Chinese (zh)
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冯泽伟
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Individual
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Abstract

The utility model discloses a coal mining dryer air outlet position regulating device, which belongs to the technical field of coal mine equipment and comprises an air box, wherein the air box is provided with a front air outlet, a front air outlet pipeline is fixedly connected in the front air outlet, the upper end of the air box is provided with a first mounting hole, the lower inner wall of the air box is rotatably connected with a third rotating shaft, the surface of the third rotating shaft is fixedly connected with a second baffle, the upper end of the third rotating shaft is fixedly connected with a second adjusting handle, the left end of the air box is provided with a left air outlet, a left air outlet pipeline is fixedly connected in the left air outlet, the right end of the air box is provided with a right air outlet, a right air outlet pipeline is fixedly connected in the right air outlet, mounting grooves are respectively formed in the left air outlet pipeline and the right air outlet pipeline, finally, the left air outlet and the right air outlet can be adjusted through the mutual matching of a gear and a sliding block, the air outlet of the front air outlet is controlled through a first adjusting knob, the device is simple to operate, very practical and greatly improves the working efficiency.

Description

Coal mining dryer air outlet position regulation and control device
Technical Field
The utility model relates to a coal mine equipment technical field, more specifically say, relate to a coal mining dryer air outlet position regulation and control device.
Background
Coal mines are areas where humans mine coal resources in coal-rich mining areas, and are generally divided into underground coal mines and opencast coal mines. When the coal seam is far from the ground surface, a tunnel is usually dug to the underground, so that the coal is a mineworker coal mine. When the coal seam is very close to the earth surface, the coal is generally excavated by directly stripping the earth surface, which is an open pit coal mine. The vast majority of coal mines in China belong to underground coal mines. Coal mines encompass a large area above ground and below ground as well as associated facilities. Coal mines are reasonable spaces excavated by humans when excavating geological formations rich in coal and generally include roadways, wells, and mining surfaces, among others. Coal is the most predominant solid fuel, one of the flammable organic rocks. It is formed by that the flourishing plants grown in a certain geologic age are gradually piled up into a thick layer in a proper geologic environment, and are buried in the water bottom or silt, and then are subjected to the natural coalification action in a long geologic age. In the geologic periods of the world, most coal is produced in the stratums of the stone charm, the pilaster, the Jurassic and the third era, which is an important coal-forming era. The carbon content of the coal is generally 46-97%, and the coal is brown to black and has dull to metallic luster. According to the degree of coalification, coal can be classified into peat, lignite, bituminous coal and anthracite.
When the colliery was excavated, the staff was when adjusting the position of wind gap air-out, often all adjusted the air outlet position at ordinary air outlet through placing the baffle at the air outlet, and such placing not only stability is very poor, and the operation is very troublesome moreover, can't improve work efficiency.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved
To the problem that exists among the prior art, the utility model aims to provide a coal mining dryer air outlet position regulation and control device, it can realize adjusting through mutually supporting of gear and slider and control the air-out, adjusts the air-out of handle control front air outlet through the second, and this device easy operation is very practical, the improvement of very big degree work efficiency.
2. Technical scheme
In order to solve the above problem, the utility model adopts the following technical scheme:
a coal mining air duct air outlet direction regulating device comprises an air box, wherein a front air outlet is formed in the air box in a chiseled mode, a front air outlet pipeline is fixedly connected in the front air outlet, a first mounting hole is formed in the upper end of the air box in a chiseled mode, a third rotating shaft is connected to the lower inner wall of the air box in a rotating mode, a second baffle is fixedly connected to the surface of the third rotating shaft, a second adjusting handle is fixedly connected to the upper end of the third rotating shaft, a left air outlet is formed in the left end of the air box in a chiseled mode, a left air outlet pipeline is fixedly connected in the left air outlet, a right air outlet is formed in the right end of the air box in a chiseled mode, a right air outlet pipeline is fixedly connected in the right air outlet, mounting grooves are formed in the left air outlet pipeline and the right air outlet pipeline in a chiseled mode, first rotating shafts are connected to the upper inner walls of two mounting grooves in a rotating mode, and the other ends of the first rotating shafts respectively movably penetrate through the lower inner walls of the two mounting grooves, the other ends of the two mounting grooves are respectively and rotatably connected to the lower inner walls of the left air outlet pipeline and the right air outlet pipeline, the surfaces of the two first rotating shafts are respectively and fixedly connected with a first baffle plate, the surfaces of the two first rotating shafts are respectively and fixedly connected with driven gears, the two driven gears are respectively positioned in the two mounting grooves, the upper end of the air box is provided with a sliding hole, the front inner wall and the rear inner wall of the sliding hole are respectively provided with a sliding groove, a first sliding block is connected in the sliding hole in a sliding manner, the front end and the rear end of the first sliding block are respectively and fixedly connected with a second sliding block, the two second sliding blocks are respectively and slidably connected in the two sliding grooves, the upper end of the first sliding block is provided with a second mounting hole in a drilling manner, a second rotating shaft is movably penetrated in the second mounting hole, the lower end of the second rotating shaft is fixedly connected with a driving gear, and the driving gear is matched with the two driven gears, the first adjustment handle of upper end fixedly connected with of second pivot, the rear end of bellows is dug there is the air intake, air-out about fixedly connected with air-supply line in the air intake finally can realize adjusting through mutually supporting of gear and slider, the air-out of air outlet before controlling through first adjust knob, this device easy operation, very practical, the improvement of very big degree work efficiency.
As a preferred scheme of the utility model, the equal fixedly connected with slide in both ends about first slider, two the equal sliding connection of slide is in the upper end of bellows, two the equal fixedly connected with fixed block in upper end of slide, two backup pads of the upper end fixedly connected with of bellows, two the left end of backup pad has all been opened and has been dug the third mounting hole, two the slide activity respectively runs through two third mounting holes, two respectively two springs of fixedly connected with between backup pad and two fixed blocks respectively.
As a preferred scheme of the utility model, equal fixedly connected with air conditioning shutter in left side air-out pipeline, right air-out pipeline and the preceding air-out pipeline.
As a preferred scheme of the utility model, fixedly connected with cross mount between the circumference inner wall of intake stack, the front end fixedly connected with fan of cross mount.
As an optimized scheme of the utility model, the surface of first regulation handle and second regulation handle has all wrapped up anti-skidding rubber sleeve.
As a preferred scheme of the utility model, the bellows is made of stainless steel, and the surface of the bellows is galvanized.
3. Advantageous effects
Compared with the prior art, the utility model has the advantages of:
(1) when the front air outlet needs to be adjusted, the second adjusting handle is held by a hand, the second adjusting handle is rotated, the third rotating shaft is rotated by the rotation of the second adjusting handle, the second baffle plate is rotated by the rotation of the third rotating shaft, the rotation is stopped when the third rotating shaft is rotated by ninety degrees, at the moment, the second baffle plate is vertical to the non-rotated front, the air in the air inlet can be discharged from the front air outlet, when the air is discharged from the left air outlet needs to be adjusted, the first adjusting handle is held by the hand and pushed leftwards, the first slider is moved leftwards by the leftward pushing of the first adjusting handle, the two second sliders slide leftwards in the two sliding holes by the leftward movement of the first slider, the driving gear moves leftwards by the movement of the first slider, the first slider stops moving when the first slider moves to be contacted with the left inner wall of the sliding hole, at the moment, the second rotating shaft is meshed with the driven gear positioned at the left part, rotate first regulation handle, rotate ninety degrees first regulation handle after the first regulation handle of stall, the first baffle that is located the left part this moment is perpendicular before with not rotating, the air outlet that is located the left part can normally be air-out, when needing to adjust the air-out of right part, above-mentioned operation otherwise can, finally can realize adjusting through mutually supporting of gear and slider about the air-out, the air-out of air outlet before controlling through first adjust knob, this device easy operation, it is very practical, the improvement of very big degree work efficiency.
(2) In this scheme, two slides are for the sake of convenience block the slide opening, be for the sake of preventing wind from the slide opening upflow, two fixed blocks are for the sake of convenience fixed two springs, two backup pads are also for the sake of convenience fixed two springs, two third mounting holes are for the sake of convenience two slide activities run through, two springs are for the sake of convenience the position of injecing first slider through the elastic action, left side air-out pipeline, equal fixedly connected with accent wind shutter in right side air-out pipeline and the preceding air-out pipeline, the fixed of accent wind shutter is for the sake of convenience further adjusting the wind direction, fixedly connected with cross mount between the circumference inner wall of air-supply line, the front end fixedly connected with fan of cross mount, the cross mount is for the sake of convenience fixed fan, the fan is for the sake of convenience increase the wind speed.
Drawings
Fig. 1 is a first perspective view of an air outlet direction regulating device of a coal mining air duct of the present invention;
fig. 2 is a second perspective view of the coal mining air duct air outlet direction regulating device of the present invention;
fig. 3 is a cross-sectional view of the coal mining air duct air outlet direction regulating device of the present invention;
fig. 4 is the utility model discloses a coal mining dryer air outlet position regulation and control device's local cross-sectional view.
The reference numbers in the figures illustrate:
1 bellows, 2 left air-out pipelines, 3 air inlet pipeline, 4 right air-out pipelines, 5 preceding air-out pipelines, 6 air regulation shutter, 7 cross mount, 8 fans, 9 mounting grooves, 10 first pivot, 11 driven gear, 12 first baffle, 13 slide holes, 14 spouts, 15 first slider, 16 second slider, 17 second pivot, 18 first regulation handle, 19 driving gear, 20 slides, 21 fixed block, 22 springs, 23 backup pads, 24 second regulation handle, 25 third pivot, 26 second baffle.
Detailed Description
The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example (b):
referring to fig. 1-4, a coal mining air duct air outlet direction regulating device comprises an air box 1, the air box 1 is provided with a front air outlet, a front air outlet pipeline 5 is fixedly connected in the front air outlet, a first mounting hole is drilled in the upper end of the air box 1, the lower inner wall of the air box 1 is rotatably connected with a third rotating shaft 25, the surface of the third rotating shaft 25 is fixedly connected with a second baffle 26, the upper end of the third rotating shaft 25 is fixedly connected with a second adjusting handle 24, the left end of the air box 1 is provided with a left air outlet, the left air outlet pipeline 2 is fixedly connected in the left air outlet, the right end of the air box 1 is provided with a right air outlet, the right air outlet pipeline 4 is fixedly connected in the right air outlet, mounting grooves 9 are drilled in the left air outlet pipeline 2 and the right air outlet pipeline 4, the upper inner walls of the two mounting grooves 9 are rotatably connected with first rotating shafts 10, the other ends of the two first rotating shafts 10 respectively and movably penetrate through the lower inner walls of the two mounting grooves 9, the other ends of the two mounting grooves 9 are respectively and rotatably connected with the lower inner walls of the left air outlet pipeline 2 and the right air outlet pipeline 4, the surfaces of the two first rotating shafts 10 are respectively and fixedly connected with a first baffle 12, the surfaces of the two first rotating shafts 10 are respectively and fixedly connected with driven gears 11, the two driven gears 11 are respectively positioned in the two mounting grooves 9, the upper end of the air box 1 is provided with a sliding hole 13, the front inner wall and the rear inner wall of the sliding hole 13 are respectively provided with a sliding groove 14, the sliding hole 13 is internally and slidably connected with a first sliding block 15, the front end and the rear end of the first sliding block 15 are respectively and fixedly connected with a second sliding block 16, the two second sliding blocks 16 are respectively and slidably connected in the two sliding grooves 14, the upper end of the first sliding block 15 is provided with a second mounting hole, a second rotating shaft 17 movably penetrates through the second mounting hole, the lower end of the second rotating shaft 17 is fixedly connected with a driving gear 19, and the driving gear 19 is matched with the two driven gears 11, the upper end of the second rotating shaft 17 is fixedly connected with a first adjusting handle 18, the rear end of the air box 1 is provided with an air inlet, and an air inlet pipeline 3 is fixedly connected in the air inlet.
In this embodiment, the front air outlet is cut to fix the front air outlet pipe 5 conveniently, the front air outlet pipe 5 is cut to facilitate air outlet, the first installation hole is cut to facilitate the second adjustment handle 24 to penetrate through, the second adjustment handle 24 is cut to facilitate fixing the third rotating shaft 25 and the second baffle 26, the second baffle 26 is cut to facilitate blocking the front air outlet pipe 5 conveniently, the third rotating shaft 25 is cut to facilitate rotating the second adjustment handle 24, the left air outlet is cut to facilitate fixing the left air outlet pipe 2, the right air outlet is cut to facilitate fixing the right air outlet pipe 4, the left air outlet pipe 2 and the right air outlet pipe 4 are cut to facilitate air outlet, the two installation grooves 9 are cut to facilitate rotating the two first rotating shafts 10, the two first rotating shafts 10 are used to facilitate fixing the two driven gears 11 and the two first baffles 12, the two driven gears 11 are matched with the driving gear 19 conveniently, the two first baffles 12 are used for blocking the left air outlet pipeline 2 and the right air outlet pipeline 4 conveniently, the first sliding blocks 15 are used for sliding the sliding holes 13 conveniently, the two sliding grooves 14 are used for sliding the two second sliding blocks 16 conveniently, the two second sliding blocks 16 are fixed to limit the positions of the first sliding blocks 15 conveniently, the second rotating shaft 17 penetrates through the second mounting holes movably, the second rotating shaft 17 is used for fixing the first adjusting handle 18 and the driving gear 19 conveniently, the first adjusting handle 18 is used for rotating the driving gear 19 conveniently, the driving gear 19 is meshed with the two first baffles 12 conveniently, the air inlet is used for fixing the air inlet pipeline 3 conveniently, and air inlet of the air inlet pipeline 3 is used for supplying air conveniently.
Specifically, please refer to fig. 1, the left and right ends of the first slider 15 are fixedly connected with sliding plates 20, the two sliding plates 20 are slidably connected to the upper end of the bellows 1, the upper ends of the two sliding plates 20 are fixedly connected with fixing blocks 21, the upper end of the bellows 1 is fixedly connected with two supporting plates 23, the left ends of the two supporting plates 23 are both provided with third mounting holes, the two sliding plates 20 respectively movably penetrate through the two third mounting holes, and the two supporting plates 23 and the two fixing blocks 21 are fixedly connected with two springs 22 respectively.
In this embodiment, the two sliding plates 20 are for blocking the sliding holes 13 and preventing the wind from flowing upwards from the sliding holes 13, the two fixing blocks 21 are for fixing the two springs 22, the two supporting plates 23 are for fixing the two springs 22, the two third mounting holes are for movably penetrating the two sliding plates 20, and the two springs 22 are for limiting the position of the first slider 15 by elastic action.
Specifically, referring to fig. 1, the left air outlet duct 2, the right air outlet duct 4 and the front air outlet duct 5 are all fixedly connected with an air adjusting shutter 6.
In this embodiment, equal fixedly connected with adjusts wind shutter 6 in left air-out pipeline 2, right air-out pipeline 4 and preceding air-out pipeline 5, and the fixed of adjusting wind shutter 6 is for the convenience of further adjusting the wind direction.
Specifically, referring to fig. 2, a cross fixing frame 7 is fixedly connected between the circumferential inner walls of the air inlet duct 3, and a fan 8 is fixedly connected to the front end of the cross fixing frame 7.
In this embodiment, fixedly connected with cross mount 7 between the circumference inner wall of intake stack 3, the front end fixedly connected with fan 8 of cross mount 7, cross mount 7 is for the convenience of fixed fan 8, and fan 8 is for the convenience of increaseing the wind speed.
Specifically, referring to fig. 1, the surfaces of the first adjusting handle 18 and the second adjusting handle 24 are wrapped with anti-slip rubber sleeves.
In this embodiment, the surfaces of the first adjusting handle 18 and the second adjusting handle 24 are wrapped with anti-slip rubber sleeves, and the two rubber sleeves are wrapped to prevent the hands from slipping.
Specifically, referring to fig. 1, the wind box 1 is made of stainless steel and is galvanized on its surface.
In this embodiment, the bellows 1 is made of stainless steel to prevent the bellows 1 from rusting, and the surface of the bellows 1 is galvanized to make the appearance more beautiful.
The working principle is as follows: when the front air outlet needs to be adjusted, the second adjusting handle 24 is held by hand, the second adjusting handle 24 is rotated, the rotation of the second adjusting handle 24 enables the third rotating shaft 25 to rotate, the rotation of the third rotating shaft 25 enables the second baffle 26 to rotate, the rotation is stopped when the third rotating shaft 25 rotates ninety degrees, at the moment, the second baffle 26 is perpendicular to the non-rotating front air outlet, air in the air inlet can be discharged from the front air outlet, when the air outlet in the left air outlet needs to be adjusted, the first adjusting handle 18 is held by hand to push the first adjusting handle 18 leftwards, the first slider 15 is moved leftwards by the leftward pushing of the first adjusting handle 18, the two second sliders 16 slide leftwards in the two sliding holes 13 by the leftward movement of the first slider 15, the driving gear 19 is moved leftwards by the movement of the first slider 15, and the first slider 15 stops moving when the first slider 15 moves to be in contact with the left inner wall of the sliding holes 13, at this moment, the second rotating shaft 17 is engaged with the driven gear 11 positioned at the left part, the first adjusting handle 18 is rotated, the first adjusting handle 18 stops rotating after the first adjusting handle 18 is rotated by ninety degrees, at this moment, the first baffle 12 positioned at the left part is vertical to the non-rotated part, the air outlet positioned at the left part can normally output air, when the air outlet at the right part needs to be adjusted, the operation is reversed, finally, the left and right air output can be adjusted through the mutual matching of the gear and the sliding block, and the air output of the front air outlet is controlled through the first adjusting knob, the device is simple to operate and very practical, the working efficiency is greatly improved, the two sliding plates 20 are used for conveniently blocking the sliding holes 13 and preventing the air from flowing upwards from the sliding holes 13, the two fixed blocks 21 are used for conveniently fixing the two springs 22, and the two support plates 23 are used for conveniently fixing the two springs 22, two third mounting holes are for the sake of convenience two slides 20 activity runs through, two springs 22 are for the sake of convenience to inject the position of first slider 15 through the elastic action, left side air-out pipeline 2, equal fixedly connected with air regulation shutter 6 in right side air-out pipeline 4 and the preceding air-out pipeline 5, the fixed of air regulation shutter 6 is for the sake of convenience to further adjust the wind direction, fixedly connected with cross mount 7 between the circumference inner wall of intake stack 3, the front end fixedly connected with fan 8 of cross mount 7, cross mount 7 is for the sake of convenience to fix fan 8, fan 8 is for the sake of convenience to increase the wind speed.
The above description is only 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 can substitute or change the technical solution and the improvement concept of the present invention within the technical scope disclosed in the present invention.

Claims (6)

1. The utility model provides a coal mining dryer air outlet position regulation and control device, includes bellows (1), its characterized in that: the air box is characterized in that a front air outlet is formed in the air box (1) through a chiseling mode, a front air outlet pipeline (5) is fixedly connected into the front air outlet, a first mounting hole is formed in the upper end of the air box (1) through a chiseling mode, a third rotating shaft (25) is connected into the lower inner wall of the air box (1) through a rotating mode, a second baffle (26) is fixedly connected onto the surface of the third rotating shaft (25), a second adjusting handle (24) is fixedly connected onto the upper end of the third rotating shaft (25), a left air outlet is formed in the left end of the air box (1), a left air outlet pipeline (2) is fixedly connected into the left air outlet, a right air outlet is formed in the right air outlet through a chiseling mode, a right air outlet pipeline (4) is fixedly connected into the right air outlet pipeline (4), mounting grooves (9) are formed in the left air outlet pipeline (2) and the right air outlet pipeline (4), and the upper inner wall of the mounting grooves (9) is rotatably connected with a first rotating mode (10), two the other end of first pivot (10) is the activity respectively and runs through the lower inner wall of two mounting grooves (9), two the other end of mounting groove (9) rotates respectively and connects in the lower inner wall of left air-out pipeline (2) and right air-out pipeline (4), two the equal fixedly connected with first baffle (12) in surface of first pivot (10), two the equal fixedly connected with driven gear (11) in surface of first pivot (10), two driven gear (11) are located respectively in two mounting grooves (9), the upper end of bellows (1) is opened and is chiseled there is slide opening (13), spout (14) have all been chiseled on the inner wall around slide opening (13), sliding connection has first slider (15) in slide opening (13), the equal fixedly connected with second slider (16) in both ends around first slider (15), two second slider (16) are sliding connection respectively in two spout (14), the upper end of first slider (15) is excavated there is the second mounting hole, the activity runs through in the second mounting hole has second pivot (17), the lower extreme fixedly connected with driving gear (19) of second pivot (17), driving gear (19) and two driven gear (11) homogeneous phase match, the first regulation handle (18) of upper end fixedly connected with of second pivot (17), the rear end of bellows (1) is excavated there is the air intake, fixedly connected with intake stack (3) in the air intake.
2. The coal mining air duct air outlet direction regulating and controlling device of claim 1, characterized in that: equal fixedly connected with slide (20) in both ends about first slider (15), two equal sliding connection in the upper end of bellows (1), two the equal fixedly connected with fixed block (21) in upper end of slide (20), two backup pads (23) of the upper end fixedly connected with of bellows (1), two the left end of backup pad (23) is all opened and is dug there is the third mounting hole, two slide (20) activity respectively runs through two third mounting holes, two respectively two spring (22) of fixedly connected with between backup pad (23) and two fixed block (21).
3. The coal mining air duct air outlet direction regulating and controlling device of claim 2, characterized in that: and air adjusting shutters (6) are fixedly connected in the left air outlet pipeline (2), the right air outlet pipeline (4) and the front air outlet pipeline (5).
4. The coal mining air duct air outlet direction regulating and controlling device of claim 3, characterized in that: a cross fixing frame (7) is fixedly connected between the circumferential inner walls of the air inlet pipeline (3), and a fan (8) is fixedly connected to the front end of the cross fixing frame (7).
5. The coal mining air duct air outlet direction regulating and controlling device of claim 4, characterized in that: the surfaces of the first adjusting handle (18) and the second adjusting handle (24) are wrapped with anti-slip rubber sleeves.
6. The coal mining air duct air outlet direction regulating and controlling device of claim 5, characterized in that: the air box (1) is made of stainless steel, and the surface of the air box is galvanized.
CN202022072517.5U 2020-09-21 2020-09-21 Coal mining dryer air outlet position regulation and control device Expired - Fee Related CN213838656U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022072517.5U CN213838656U (en) 2020-09-21 2020-09-21 Coal mining dryer air outlet position regulation and control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022072517.5U CN213838656U (en) 2020-09-21 2020-09-21 Coal mining dryer air outlet position regulation and control device

Publications (1)

Publication Number Publication Date
CN213838656U true CN213838656U (en) 2021-07-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202022072517.5U Expired - Fee Related CN213838656U (en) 2020-09-21 2020-09-21 Coal mining dryer air outlet position regulation and control device

Country Status (1)

Country Link
CN (1) CN213838656U (en)

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Granted publication date: 20210730