Raw coal dust collecting and treating device for coal cleaning plant

Abstract

The utility model relates to a coal cleaning plant raw coal dust collecting processor which comprises a dust collecting cover, a bag type dust collector, a front exhaust fan, an inverted L-shaped support and a rear exhaust fan, a single-rod hydraulic cylinder is arranged on the vertical portion of the support, a conveying pipe and a motor are arranged on the horizontal portion of the support, and a piston rod of the single-rod hydraulic cylinder is fixedly connected with a horizontal dust collecting barrel. One end of the dust removal cylinder is open, a circle of hollow air distribution plate is arranged on the inner side wall of the dust removal cylinder, the outer side of the air distribution plate is communicated with the bottom end of the conveying pipe through a hose, and a plurality of air outlet holes are evenly distributed in the inner side of the air distribution plate; an output shaft of the motor is downwards and fixedly connected with a rotating disc which is coaxial with the dust removal cylinder, and the left side and the right side of the rotating disc are each provided with a circle of inserting groove; supporting discs are detachably arranged at the centers of the left side and the right side of the rotary disc, a plurality of folding filter elements are fixedly arranged on the sides, away from the rotary disc, of the supporting discs, the folding filter elements are coaxially arranged in a sleeved mode, and the hole diameters are gradually decreased from outside to inside. The dust collection device can realize multiple purification treatment on collected dust, and is more environment-friendly and practical.

Description

TECHNICAL FIELD

[0001] The utility model belongs to raw coal treatment technical field, concretely relates to a coal preparation plant raw coal dust collection processor. BACKGROUND

[0002] At present, the coal preparation plant will produce a certain dust flying when carrying out the crushing, screening and other processing of raw coal, the existing processing mode is that the dust is first concentrated by a certain dust collecting or collecting cover, then is transported to the conventional cyclone or bag type dust collector for dust removal, and finally is discharged under the pumping of the air blower, but the processing effect of the conventional cyclone or bag type dust collector is limited, the tail gas discharged still contains a certain dust, has an adverse effect on the external environment, is not environment-friendly and practical, and needs to be improved. CONTENT OF UTILITY MODEL

[0003] Therefore, the utility model aims at providing a coal preparation plant raw coal dust collection processor, which can realize multiple purification treatment of the collected dust, so as to solve the above problems.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme of a coal preparation plant raw coal dust collection processor, which comprises a dust collecting cover, a bag type dust collector, a front air blower, an inverted L-shaped support and a rear air blower, a single-rod hydraulic cylinder is horizontally fixed on the vertical part of the support, a conveying pipe and a motor are fixed on the horizontal part, the piston rod of the single-rod hydraulic cylinder is directed to the horizontal part of the support and is fixedly connected with a horizontal dust removal cylinder, one end of the dust removal cylinder away from the single-rod hydraulic cylinder is open, a ring of hollow air distribution plates are fixed on the inner side wall of the dust removal cylinder, the outer side of the air distribution plate is communicated with the bottom end of the conveying pipe through a hose, and the inner side is uniformly provided with a plurality of air outlets, the output shaft of the motor is downwardly fixedly connected with a rotating disc, the rotating disc is coaxially arranged with the dust removal cylinder and a ring of insertion slots are formed in the left and right side edges of the rotating disc, the open end of the dust removal cylinder can be inserted into the insertion slots, support discs are detachably arranged on the centers of the left and right sides of the rotating disc, a plurality of folding filter elements are fixed on the side of the support disc away from the rotating disc, the folding filter elements are coaxially sleeved and the pore size decreases from the outside to the inside, a through hole is formed in the support disc corresponding to the inner side of the folding filter element in the innermost layer, an inverted L-shaped channel is formed in the rotating disc corresponding to the through hole, a Y-shaped three-way pipe is fixedly connected to the bottom of the rotating disc, control valves are arranged on the two ports of the upper part of the three-way pipe, the two ports correspond to and communicate with the two channels, the small-diameter end of the dust collecting cover is communicated with the air inlet of the bag type dust collector, the front air blower is fixedly arranged on the horizontal part of the support and its air inlet is communicated with the air outlet of the bag type dust collector, its air outlet is communicated with the top of the conveying pipe, the rear air blower is arranged below the three-way pipe and a support pipe is fixedly communicated with the air inlet of the rear air blower, and the port of the lower part of the three-way pipe is rotatably communicated with the top end of the support pipe.

[0005] Preferably, four groups of square mounting grooves are arranged on the side of the support disc close to the rotating disc, the opposite two groove walls of the mounting groove are provided with blind holes, the corresponding side of the rotating disc is provided with a positioning block, the positioning block is provided with a double-rod hydraulic cylinder, the two piston rods of the double-rod hydraulic cylinder can extend out of the positioning block, the positioning block is inserted into the corresponding mounting groove, and the two piston rods of the double-rod hydraulic cylinder are inserted into the two blind holes of the corresponding mounting groove.

[0006] Preferably, the positioning block is matched with the corresponding mounting groove.

[0007] Preferably, the piston rod of the double-rod hydraulic cylinder is matched with the corresponding blind hole.

[0008] Preferably, the open end of the dust removal cylinder is matched with the corresponding insertion groove.

[0009] Preferably, a sealing gasket is arranged on the groove bottom of the insertion groove.

[0010] The utility model discloses a dust removal device, which comprises a rotating disc, a support disc, a dust removal cylinder, a single-rod hydraulic cylinder, a pre-positioned suction fan and a post-positioned suction fan.

[0011] After a period of use, another new support disc with folded filter core can be installed on the side of the rotating disc far away from the dust removal cylinder, and in the stop state, the single-rod hydraulic cylinder is first operated to retract the piston rod, so that the dust removal cylinder is driven away from the rotating disc. Then, the motor is operated to drive the rotating disc to reverse 180 degrees, so that the used folded filter core is turned to the side far away from the dust removal cylinder, and the new folded filter core is turned to the side close to the dust removal cylinder. Then, the dust removal cylinder is moved and inserted into place through the extension of the piston rod of the single-rod hydraulic cylinder, and the new folded filter core is opened and the other control valve is closed, so that the dust removal operation can continue. Meanwhile, the used folded filter core can be removed according to the detachable setting between the support disc and the rotating disc, and the new folded filter core can be installed for replacement operation. In this way, the folded filter core can be conveniently replaced and disassembled and replaced, and the multi-stage precision filtering effect can be ensured in long-term dust removal operation, and the device is more convenient and practical. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a front view structural schematic diagram of the utility model;

[0013] Figure 2 is a front view structural schematic diagram of the dust removal cylinder of the utility model;

[0014] Figure 3 is a front view structural schematic diagram of the rotating disc of the utility model;

[0015] Figure 4 is a right view structural schematic diagram of the rotating disc of the utility model;

[0016] Figure 5 is a front view structural schematic diagram of the support disc and the folded filter core of the utility model;

[0017] Figure 6 is a right view structural schematic diagram of the support disc of the utility model;

[0018] Figure 7 is a front view structural schematic diagram of the support disc when the support disc is installed on the rotating disc;

[0019] Figure 8 is a front view structural schematic diagram of the dust removal cylinder when the dust removal cylinder is inserted on the rotating disc.

[0020] In the drawing, 1 is a dust collecting cover, 2 is a bag type dust collector, 3 is a front-positioned air extractor, 4 is a support, 5 is a rear-positioned air extractor, 6 is a single-rod hydraulic cylinder, 7 is a conveying pipe, 8 is a motor, 9 is a dust removal cylinder, 10 is a gas distribution plate, 11 is a hose, 12 is an air outlet hole, 13 is a rotating disc, 14 is an insertion slot, 15 is a support disc, 16 is a folded filter core, 17 is a through hole, 18 is a channel, 19 is a tee pipe, 20 is a control valve, 21 is a support pipe, 22 is an installation slot, 23 is a blind hole, 24 is a positioning block, 25 is a double-rod hydraulic cylinder, and 26 is a sealing gasket. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0022] like Figures 1 to 8 As shown, a raw coal dust collection and processing unit for a coal washing plant includes a dust collection hood 1, a bag filter 2, a front-mounted exhaust fan 3, an inverted L-shaped support 4, and a rear-mounted exhaust fan 5. A single-rod hydraulic cylinder 6 is horizontally fixed on the vertical part of the support 4, and a conveying pipe 7 and a motor 8 are fixed on the horizontal part. The piston rod of the single-rod hydraulic cylinder 6 faces the direction of the horizontal part of the support 4 and is fixedly connected to a horizontal dust collection cylinder 9. The end of the dust collection cylinder 9 away from the single-rod hydraulic cylinder 6 is open. A hollow air distribution plate 10 is fixedly installed on the inner wall of the dust collection cylinder 9. The outer side of the air distribution plate 10 is connected to the bottom end of the conveying pipe 7 through a flexible hose 11, and several air outlets 12 are evenly distributed on the inner side. The output shaft of the motor 8 faces downward and is fixedly connected to a turntable 13. The turntable 13 is coaxially arranged with the dust collection cylinder 9, and a ring of slots 14 is opened on both its left and right sides. The open end of the dust collection cylinder 9 can be inserted into the slots 14. A support plate 15 can be detachably installed on the center of both the left and right sides of the turntable 13. Several pleated filter elements 16 are fixed on the side of the support plate 15 away from the turntable 13. The pleated filter elements 16 are coaxially sleeved and the pore size decreases from the outside to the inside. A through hole 17 is opened on the support plate 15 corresponding to the inner side of the innermost pleated filter element 16. An inverted L-shaped channel 18 is opened on the turntable 13 corresponding to the through hole 17. A Y-shaped three-way pipe 19 is fixedly connected to the bottom of the turntable 13. A control valve 20 is provided on both ends of the upper part of the three-way pipe 19, and the two ends correspond to and are connected to the two channels 18 one by one. The small diameter end of the dust collection hood 1 is connected to the air inlet of the bag filter 2. The front exhaust fan 3 is fixed on the horizontal part of the bracket 4 and its air inlet is connected to the air outlet of the bag filter 2, and its exhaust port is connected to the top of the conveying pipe 7. The rear exhaust fan 5 is located below the three-way pipe 19 and its air inlet is fixedly connected to the support pipe 21. The lower port of the three-way pipe 19 is rotatably connected to the top of the support pipe 21.

[0023] Before use, the piston rod of the single-rod hydraulic cylinder 6 is in a retracted state, the dust removal cylinder 9 is away from the rotating disc 13, and no support disc 15 is installed on both sides of the rotating disc 13. When in use, the support disc 15 with the folded filter element 16 can be first installed on the side of the rotating disc 13 away from the dust removal cylinder 9. After installation, the motor 8 is operated to drive the rotating disc 13 to rotate 180 degrees, so that the folded filter element 16 is turned to the direction of the dust removal cylinder 9. Then, the single-rod hydraulic cylinder 6 is operated to make the piston rod thereof extend, so that the dust removal cylinder 9 is driven to move towards the rotating disc 13 as a whole until the open end of the dust removal cylinder 9 is inserted into the corresponding insertion slot 14, and the corresponding folded filter element 16 is covered in the dust removal cylinder 9. Next, the control valve 20 on the three-way pipe 19 corresponding to the folded filter element 16 is opened, and the pre-positioned air extractor 3 and the post-positioned air extractor 5 are operated, so that dust collection and dust removal processing can be carried out. Specifically, the dust hood 1 is arranged at a work position requiring dust removal, and the conical dust hood 1 can effectively collect and deliver dust to the bag-type dust collector 2 for rough filtration, so that most of the dust in the dust-containing air can be effectively removed. Then, under the suction of the pre-positioned air extractor 3, the air passing through the bag-type dust collector 2 can be continuously delivered to the air distribution plate 10 in the dust removal cylinder 9, and then uniformly discharged to the outermost folded filter element 16 through the plurality of air outlet holes 12 on the air distribution plate 10. Under the suction of the post-positioned air extractor 5, the air can pass through the plurality of folded filter elements 16 from the outside to the inside in turn, so that further multi-stage fine filtration processing of the dust-containing air can be realized. Subsequently, the air can be delivered to the support pipe 21 through the corresponding through hole 17, passage 18 and port of the three-way pipe 19, and finally discharged from the air outlet of the post-positioned air extractor 5. In this way, rough filtration and multi-stage fine filtration and purification processing of dust-containing air can be realized in sequence, so that the dust removal effect is better and more conducive to environmental protection.

[0024] After a period of use, another new support disc 15 with a folded filter core 16 can be installed on the side of the rotating disc 13 far from the dust removal cylinder 9 at this time, and in the stopped state, the single-rod hydraulic cylinder 6 is first operated to retract the piston rod, which drives the dust removal cylinder 9 away from the rotating disc. Then, the motor 8 is operated to drive the rotating disc 13 to reverse 180 degrees, which can turn the used folded filter core 16 to the side far from the dust removal cylinder 9 and turn the new folded filter core 16 to the side close to the dust removal cylinder 9. Next, the dust removal cylinder 9 is moved and inserted into place by the extension of the piston rod of the single-rod hydraulic cylinder 6, and the corresponding control valve 20 of the new folded filter core 16 is closed and the other control valve 20 is closed, which can continue the dust removal operation. At the same time, the used folded filter core 16 can be removed according to the detachable setting between the support disc 15 and the rotating disc 13, and the subsequent installation of the new folded filter core 16 for replacement operation can be waited. In this way, the overall folded filter core 16 can be conveniently replaced and disassembled and replaced, which can better ensure the effect of multi-stage precision filtration in long-term dust removal operation, and is more convenient and practical. The bag-type dust collector 2, the front suction fan 3, the rear suction fan 5, the single-rod hydraulic cylinder 6, and the motor 8 all use existing technologies. The motor 8 can specifically use an existing step motor with a brake function to facilitate the rotation to the corresponding angle and the position locking after the rotation is in place. The folded filter core 16 is an existing technology, has the characteristics of high filtering precision and large flow capacity, can cooperate to achieve precision filtration of dust air, and in order to ensure gradient filtration, the pore size of the outermost folded filter core 16 can be smaller than the pore size of the dust removal filter bag in the bag-type dust collector, so as to ensure the filtering and purifying quality.

[0025] In the embodiment, four groups of square mounting grooves 22 are arranged on one side of the support disc 15 close to the rotating disc 13, the mounting grooves 22 are arranged on the opposite two groove walls, the blind holes 23 are arranged on the corresponding side of the rotating disc 13, the positioning blocks 24 are arranged on the corresponding side of the rotating disc 13, the double-rod hydraulic cylinders 25 are arranged in the positioning blocks 24, the two piston rods of the double-rod hydraulic cylinders 25 can extend out of the positioning blocks 24, the positioning blocks 24 are inserted into the corresponding mounting grooves 22, the two piston rods of the double-rod hydraulic cylinders 25 correspond to the two blind holes 23 in the corresponding mounting grooves 22, and are inserted into the two blind holes 23, so that when the used folding filter element 16 needs to be replaced, the double-rod hydraulic cylinders 25 on the corresponding side can be operated after the used folding filter element 16 is turned to the side away from the dust removal cylinder 9, the piston rods of the double-rod hydraulic cylinders 25 are retracted, the insertion locking of the support disc 15 is released, the support disc 15 is pulled out of the rotating disc 13, and the used folding filter element 16 can be integrally removed. When the new folding filter element 16 is installed, the mounting grooves 22 on the support disc 15 are aligned with the corresponding positioning blocks 24, the mounting grooves 22 are inserted into the corresponding positioning blocks 24, the double-rod hydraulic cylinders 25 are operated, the piston rods of the double-rod hydraulic cylinders 25 are extended and inserted into the corresponding blind holes 23, the support disc 15 is inserted and fixed, the fixing and installation of the new folding filter element 16 are completed, the installation is stable, and the subsequent use is not affected. In this way, the folding filter element 16 can be conveniently and integrally replaced, the multi-stage fine filtering effect can be achieved, and the device is more convenient and practical.

[0026] In the embodiment, the positioning blocks 24 are matched with the corresponding mounting grooves 22, so that the support disc 15 can be smoothly inserted and positioned.

[0027] In the embodiment, the piston rods of the double-rod hydraulic cylinders 25 are matched with the corresponding blind holes 23, so that the piston rods of the double-rod hydraulic cylinders 25 can be smoothly inserted and positioned, and the insertion locking and installation of the support disc 15 are achieved.

[0028] In the embodiment, the open end of the dust removal cylinder 9 is matched with the corresponding insertion slot 14, so that the dust removal cylinder 9 can be smoothly inserted and installed.

[0029] In the embodiment, the sealing pads 26 are arranged on the groove bottoms of the insertion slots 14, so that the sealing performance between the dust removal cylinder 9 and the rotating disc 13 can be ensured after the dust removal cylinder 9 is installed, air leakage is avoided, and the fine filtering treatment of the dust air can be smoothly performed.

[0030] The above only describes the preferred embodiments of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A raw coal dust collection and treatment device for a coal washery, characterized by, The utility model provides a dust collecting device, including dust collecting cover, bag type dust collector, front suction fan, upside down L shaped support and rear suction fan, the vertical part of support is fixed with single rod hydraulic cylinder horizontally, horizontal part is fixed with conveying pipe and motor, the piston rod of single rod hydraulic cylinder is towards the horizontal part of support and is fixedly connected with horizontal dust removal cylinder, the one end of dust removal cylinder is open away from single rod hydraulic cylinder, the inboard wall of dust removal cylinder is fixed with a hollow air distribution plate, the outside of air distribution plate is communicated with the bottom end of conveying pipe through hose, and the inboard is uniformly provided with a plurality of air outlet holes, the output shaft of motor is downwards and is fixedly connected with rotating disc, the rotating disc is coaxial with dust removal cylinder and is provided with a circle of insertion slot on the left and right side of its edge, the open end of dust removal cylinder can be inserted in insertion slot, the center of left and right side of rotating disc can be detachably provided with support disc, a plurality of folding filter elements are fixed on the side away from rotating disc of support disc, the folding filter elements are coaxially sleeved and the aperture decreases from outside to inside, a through hole is formed in the inboard of folding filter element of innermost layer, a upside down L shaped channel is formed in the rotating disc corresponding to the through hole, Y shaped three way pipe is fixedly connected to the bottom of rotating disc, control valve is arranged on the two ports of upper part of three way pipe, and the two ports are corresponding to two channels and are communicated, the small diameter end of dust collecting cover is communicated with the air inlet of bag type dust collector, the front suction fan is fixed on the horizontal part of support, the air inlet of front suction fan is communicated with the air outlet of bag type dust collector, the air outlet is communicated with the top of conveying pipe, the rear suction fan is located below three way pipe, and support pipe is fixedly communicated with the air inlet of rear suction fan, the port of lower part of three way pipe is rotatably communicated with the top end of support pipe.

2. The coal preparation plant raw coal dust collection and disposal unit of claim 1, wherein, Four groups of square mounting grooves are formed on the side close to rotating disc of support disc, blind holes are formed in the opposite two groove walls of mounting groove, positioning block is fixedly arranged on the side of rotating disc corresponding to mounting groove, double rod hydraulic cylinder is arranged in positioning block, the two piston rods of double rod hydraulic cylinder can extend out of positioning block, positioning block is inserted in corresponding mounting groove, and the two piston rods of double rod hydraulic cylinder are corresponding to two blind holes in corresponding mounting groove and are inserted.

3. The coal preparation plant raw coal dust collection and disposal unit of claim 2, wherein, The positioning block is matched with the corresponding mounting groove.

4. The coal preparation plant raw coal dust collection and disposal unit of claim 2, wherein, The piston rod of double rod hydraulic cylinder is matched with the corresponding blind hole.

5. The coal preparation plant raw coal fines collection and disposal unit of claim 1 wherein, The open end of dust removal cylinder is matched with the corresponding insertion slot.

6. The coal preparation plant raw coal fines collection and disposal unit of claim 1 wherein, Sealing pad is fixedly arranged on the groove bottom of insertion slot.

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