CN109453986A - A kind of coal grain size sieving device - Google Patents
A kind of coal grain size sieving device Download PDFInfo
- Publication number
- CN109453986A CN109453986A CN201811176411.0A CN201811176411A CN109453986A CN 109453986 A CN109453986 A CN 109453986A CN 201811176411 A CN201811176411 A CN 201811176411A CN 109453986 A CN109453986 A CN 109453986A
- Authority
- CN
- China
- Prior art keywords
- strainer
- shell
- discharge port
- spring
- support rod
- Prior art date
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
The invention discloses a kind of coal grain size sieving devices, including shell, first discharge port, second discharge port, vibration motor, support rod, first sliding groove, second sliding block, second spring, blower, and door body, the side of the shell is provided with feeding inlet, first discharge port is set to the side of shell, and the plane where the first plane and feeding inlet where discharge port is perpendicular, second discharge port is set to side of the shell far from the first discharge port, the vibration motor is installed on the first discharge port close to the side of feeding inlet, the support rod is fixed on the bottom of shell.The coal grain size sieving device, blower can be driven downwards dust by the wind that rotation generates, then after the filtering of cloth bag, clean air is discharged, the effect of dedusting can be thus played to the inside of the device, and the door body of the device can thus facilitate the internal washing of the device by the second shaft Unscrew.
Description
Technical field
The present invention relates to coal screening technique field, specially a kind of coal grain size sieving device.
Background technique
One of the main energy sources that human world uses since coal was 18th century, when current and very long one section following
Between within one of the indispensable energy source of the production and living of coal or our mankind, the exploitation in coal and the mistake that uses
It needs to screen coal in journey.
The screening plant of coal screens coal by the vibration mesh screen inside machine, thus can will be some thin
Broken coal filters out.
But most of coal screening plant is at work without good dust removal method in the market, and cannot be by coal
Charcoal is discretely located, and inconvenience cleans device inside.
Summary of the invention
The purpose of the present invention is to provide a kind of coal grain size sieving devices, to solve the mesh that above-mentioned background technique proposes
Coal cannot be discretely located by preceding coal screening plant in the market at work without good dust removal method, and
The problem of inconvenience cleans device inside.
To achieve the above object, the invention provides the following technical scheme: a kind of coal grain size sieving device, including it is outer
Shell, the first discharge port, the second discharge port, vibration motor, support rod, first sliding groove, the second sliding block, second spring, blower, He Men
Body, the side of the shell are provided with feeding inlet, and first discharge port is set to the side of shell, and where the first discharge port
Plane and feeding inlet where plane it is perpendicular, second discharge port is set to side of the shell far from the first discharge port,
The vibration motor is installed on the first discharge port close to the side of feeding inlet, and the support rod is fixed on the bottom of shell, described
Support rod is provided with supporting block far from the side of shell, wherein
The first sliding groove is opened in inside of the supporting block close to support rod, and the first sliding groove is internally provided with the first bullet
Spring, second sliding block are fixed on support rod close to the side of the first spring, and second sliding block is set to the interior of second sliding slot
Portion, the second sliding slot are set to the junction of the second sliding block and supporting block, and the second spring is set to the outside of support rod；
The assembling is in the bottom of shell, and the blower is provided with cloth bag close to the side of feeding inlet, and cloth bag is set to
The inside of shell, the cloth bag are provided with revolving door far from the side of blower, and the junction of the revolving door and shell is provided with
First rotating shaft, the revolving door are provided with the first strainer close to the side of feeding inlet, and first strainer is close to the one of feeding inlet
Side is provided with the second strainer, and second strainer is provided with third strainer far from the side of the first strainer, and the third strainer leans on
The side of nearly feeding inlet is provided with the 4th strainer, and the 4th strainer is provided with filtering mouth close to the side of the second discharge port, institute
The side that door body is set to shell is stated, and the junction of door body and door body is provided with the second shaft.
Preferably, the support rod, supporting block, first sliding groove, the first spring, the second sliding block, second sliding slot and the second bullet
Spring is provided with four groups, and 4 groups of support rods, supporting block, first sliding groove, the first spring, the second sliding block, second sliding slot and second spring
It is distributed in the bottom four corners of shell.
Preferably, the geomery of second sliding block matches with the geomery of second sliding slot, and the second sliding block with
Second sliding slot is slidably connected.
Preferably, the revolving door is connected by first rotating shaft and shell rotation.
Preferably, second strainer, third strainer and the 4th strainer and 15 ° of cage connection inclination, and the second strainer
Inclined direction is opposite with the inclined direction of third strainer and the 4th strainer.
Preferably, the third strainer, the 4th strainer are consistent with the filtering grid aperture of mouth, and two points of third strainer
One of part be reticular structure, half is plate structure.
Compared with prior art, the beneficial effects of the present invention are: the coal grain size sieving device:
It, will then after the filtering of cloth bag 1. the blower of the device can be driven downwards dust by the wind that rotation generates
Clean air discharge, can thus play the effect of dedusting, and the door body of the device can pass through to the inside of the device
Second shaft Unscrew, thus facilitates the internal washing of the device；
2. can be shunk in the extruding of vibration by the first spring and second spring being arranged between support rod and supporting block, thus
It can play the role of damping；
3. multiple filter screens inside the device can be filtered the coal of different pore size size, and the tilt angle of strainer
Coal is discharged the hand that can be convenient in filtering by the first discharge port and the second discharge port, thus can be big by variable grain
Small coal separation.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is side structure schematic diagram of the present invention；
Fig. 3 is partial enlargement structural representation at A in Fig. 1 of the present invention.
In figure: 1, shell, 2, feeding inlet, the 3, first discharge port, the 4, second discharge port, 5, vibration motor, 6, support rod, 7,
Supporting block, 8, first sliding groove, the 9, first spring, the 10, second sliding block, 11, second sliding slot, 12, second spring, 13, blower, 14,
Cloth bag, 15, revolving door, 16, first rotating shaft, the 17, first strainer, the 18, second strainer, 19, third strainer, the 20, the 4th strainer,
21, mouth, the 22, second shaft, 23, door body are filtered.
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.
Fig. 1-3 is please referred to, the present invention provides a kind of technical solution: a kind of coal grain size sieving device, including shell 1,
Feeding inlet 2, the first discharge port 3, the second discharge port 4, vibration motor 5, support rod 6, supporting block 7, first sliding groove 8, the first spring
9, the second sliding block 10, second sliding slot 11, second spring 12, blower 13, cloth bag 14, revolving door 15, first rotating shaft 16, the first strainer
17, the second strainer 18, third strainer 19, the 4th strainer 20, filtering mouth 21, the second shaft 22 and door body 23, the one of the shell 1
Side is provided with feeding inlet 2, and first discharge port 3 is set to the side of shell 1, and the plane where the first discharge port 3 with enter
Plane where material mouth 2 is perpendicular, and second discharge port 4 is set to side of the shell 1 far from the first discharge port 3, the shake
Dynamic motor 5 is installed on the first discharge port 3 close to the side of feeding inlet 2, and the support rod 6 is fixed on the bottom of shell 1, the branch
Strut 6, supporting block 7, first sliding groove 8, the first spring 9, the second sliding block 10, second sliding slot 11 and second spring 12 are provided with four
Group, and 4 groups of support rods 6, supporting block 7, first sliding groove 8, the first spring 9, the second sliding block 10, second sliding slot 11 and second spring 12
The bottom four corners of shell 1 are distributed in, by the sliding between support rod 6 and supporting block 7, the first spring 9 and second spring 12
Compressional deformation, can play the effect of damping when the device is run, and the support rod 6 is arranged far from the side of shell 1
There is supporting block 7, wherein
The first sliding groove 8 is opened in supporting block 7 close to the inside of support rod 6, and the first sliding groove 8 is internally provided with first
Spring 9, second sliding block 10 are fixed on support rod 6 close to the side of the first spring 9, the geomery of second sliding block 10
It matches with the geomery of second sliding slot 11, and the second sliding block 10 is slidably connected with second sliding slot 11, passes through the second sliding block 10
With the sliding of second sliding slot 11, support rod 6 can be allowed more stable when 6 internal slide of support rod, facilitate the device
Damping, buffering, second sliding block 10 is set to the inside of second sliding slot 11, and the second sliding slot 11 is set to the second sliding block
10 are set to the outside of support rod 6 with the junction of supporting block 7, the second spring 12；
The blower 13 is installed on the bottom of shell 1, and the blower 13 is provided with cloth bag 14, and cloth close to the side of feeding inlet 2
Bag 14 is set to the inside of shell 1, and the cloth bag 14 is provided with revolving door 15 far from the side of blower 13, and the revolving door 15 is logical
It crosses first rotating shaft 16 and the rotation of shell 1 connects, by the way that 15 Unscrew of revolving door can be allowed by first rotating shaft 16, in this way in wind
Machine 13 can be opened revolving door 15 by the wind of generation when work, the convenient inside dedusting to the device, the rotation
Door 15 and the junction of shell 1 are provided with first rotating shaft 16, and the revolving door 15 is provided with the first filter close to the side of feeding inlet 2
Net 17, first strainer 17 are provided with the second strainer 18, second strainer 18, third strainer close to the side of feeding inlet 2
19 and the 4th strainer 20 15 ° of inclination, and the inclined direction of the second strainer 18 and third strainer 19 and the 4th strainer are connect with shell 1
20 inclined direction goes out on the contrary, there is the interests device that coal is moved to the first discharge port 3 and second when vibration in this way
Material mouth 4 facilitates and pours out the coal of filtering, and second strainer 18 is provided with third strainer far from the side of the first strainer 17
19, the third strainer 19, the 4th strainer 20 are consistent with the filtering grid aperture of mouth 21, and the half of third strainer 19
Part be reticular structure, half is plate structure, third strainer 19, the 4th strainer 20 aperture it is consistent can be to avoid
Coal filtering causes a part of coal that can not filter out not in time, and the third strainer 19 is provided with close to the side of feeding inlet 2
4th strainer 20, the 4th strainer 20 are provided with filtering mouth 21 close to the side of the second discharge port 4, and the door body 23 is set to
The side of shell 1, and the junction of door body 23 and door body 23 is provided with the second shaft 22.
Working principle: when using the coal grain size sieving device, securing the device to required place first,
Coal is put by feeding inlet 2 inside of the device when in use, can be passed through behind the inside that coal enters the device
The filtering of 4th strainer 20, the 4th strainer 20 can stop the biggish coal of some particles, then pass through the vibration of vibration motor 5,
It makes the biggish coal of particle mobile to the second discharge port 4, is then filtered by filtering mouth 21, it thus can be by inside coal one
A little excessive coals of particle are separated, and then the satisfactory coal of some particles can pass through third strainer 19 and the 4th strainer
20 fall to carry out second of filtering on the second strainer 18, and the second strainer 18 can filter out some tiny coals, Yi Xiefu
The coal for closing particle requirement can move on the second strainer 18, flow out from the first discharge port 3, can thus separate institute
The blower 13 of the coal of the granular size needed, the lower section of the device can inhale downwards the dust that generation is shaken in filtering, ash
Dirt can be after the filtering through cloth bag 14, and dust can be left on the inside of cloth bag 14, be filtered, reach to the air of discharge in this way
To the effect of dedusting, and the device door body 23 can by 22 Unscrew of the second shaft, thus can be convenient to the dress
The inside set is cleaned, and the first spring 9 and second spring 12 being then arranged between support rod 6 and supporting block 7 can shake
Extruding shrink, the energy of vibration can be consumed when the first spring 9 and 12 deformation of second spring, can thus play and subtract
The effect of shake, here it is the use process of the coal grain size sieving device, the content being not described in detail in this explanation belongs to
The prior art well known to professional and technical personnel in the field.
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art,
It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc.
With replacement, all within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this
Within the protection scope of invention.
Claims (6)
1. a kind of coal grain size sieving device, including shell (1), the first discharge port (3), the second discharge port (4), vibration motor
(5), support rod (6), first sliding groove (8), the second sliding block (10), second spring (12), blower (13) and door body (23), feature
Be: the side of the shell (1) is provided with feeding inlet (2), and first discharge port (3) is set to the side of shell (1), and
Plane where first discharge port (3) and the plane where feeding inlet (2) are perpendicular, and second discharge port (4) is set to outer
Side of the shell (1) far from the first discharge port (3), the vibration motor (5) are installed on the first discharge port (3) close to feeding inlet (2)
Side, the support rod (6) is fixed on the bottom of shell (1), and the support rod (6) is provided with far from the side of shell (1)
Supporting block (7), wherein
The first sliding groove (8) is opened in the inside of supporting block (7) close to support rod (6), and the inside of the first sliding groove (8) is set
Be equipped with the first spring (9), second sliding block (10) be fixed on support rod (6) close to the first spring (9) side, described second
Sliding block (10) is set to the inside of second sliding slot (11), and the second sliding slot (11) is set to the second sliding block (10) and supporting block
(7) junction, the second spring (12) are set to the outside of support rod (6)；
The blower (13) is installed on the bottom of shell (1), and the blower (13) is provided with cloth bag close to the side of feeding inlet (2)
(14), and cloth bag (14) is set to the inside of shell (1), and the cloth bag (14) is provided with revolving door far from the side of blower (13)
(15), the junction of the revolving door (15) and shell (1) is provided with first rotating shaft (16), and the revolving door (15) is close to pan feeding
The side of mouth (2) is provided with the first strainer (17), and first strainer (17) is provided with the second filter close to the side of feeding inlet (2)
Net (18), second strainer (18) are provided with third strainer (19) far from the side of the first strainer (17), the third strainer
(19) side close to feeding inlet (2) is provided with the 4th strainer (20), and the 4th strainer (20) is close to the second discharge port (4)
Side is provided with filtering mouth (21), and the door body (23) is set to the side of shell (1), and the company of door body (23) and door body (23)
The place of connecing is provided with the second shaft (22).
2. a kind of coal grain size sieving device according to claim 1, it is characterised in that: the support rod (6), support
Block (7), first sliding groove (8), the first spring (9), the second sliding block (10), second sliding slot (11) and second spring (12) are provided with four
Group, and 4 groups of support rods (6), supporting block (7), first sliding groove (8), the first spring (9), the second sliding block (10), second sliding slot (11)
The bottom four corners of shell (1) are distributed in second spring (12).
3. a kind of coal grain size sieving device according to claim 1, it is characterised in that: second sliding block (10)
Geomery matches with the geomery of second sliding slot (11), and the second sliding block (10) is slidably connected with second sliding slot (11).
4. a kind of coal grain size sieving device according to claim 1, it is characterised in that: the revolving door (15) passes through
First rotating shaft (16) and shell (1) rotation connect.
5. a kind of coal grain size sieving device according to claim 1, it is characterised in that: second strainer (18),
Third strainer (19) and the 4th strainer (20) connect 15 ° of inclination, and the inclined direction and third of the second strainer (18) with shell (1)
The inclined direction of strainer (19) and the 4th strainer (20) is opposite.
6. a kind of coal grain size sieving device according to claim 1, it is characterised in that: the third strainer (19),
4th strainer (20) and the grid aperture for filtering mouth (21) are consistent, and the part of the half of third strainer (19) is netted
Structure, half are plate structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811176411.0A CN109453986A (en) | 2018-10-10 | 2018-10-10 | A kind of coal grain size sieving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811176411.0A CN109453986A (en) | 2018-10-10 | 2018-10-10 | A kind of coal grain size sieving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109453986A true CN109453986A (en) | 2019-03-12 |
Family
ID=65607441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811176411.0A Pending CN109453986A (en) | 2018-10-10 | 2018-10-10 | A kind of coal grain size sieving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109453986A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114308606A (en) * | 2021-11-18 | 2022-04-12 | 华能碳资产经营有限公司 | Power plant coal conveying pipeline particle filtering and recycling device |
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| CN206661688U (en) * | 2017-03-06 | 2017-11-24 | 宁夏宁平炭素有限责任公司 | Multi-functional coal dedusting screening plant |
| CN107899944A (en) * | 2017-12-30 | 2018-04-13 | 新乡市振英机械设备有限公司 | One kind plus edge formula vibrating screen |
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| CN108325818A (en) * | 2017-12-26 | 2018-07-27 | 共同科技开发有限公司 | A kind of feed screening plant of stable blanking |
| CN108580259A (en) * | 2018-04-28 | 2018-09-28 | 连云港中意航空材料有限公司 | A kind of novel grain sorting and dust-extraction unit |
| CN108580251A (en) * | 2018-03-26 | 2018-09-28 | 无锡康斯坦特动力科技有限公司 | A kind of sandstone screening plant with shock-absorbing function |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0155527A2 (en) * | 1984-03-22 | 1985-09-25 | Bühler AG | Device for cleaning semolina |
| CN205110121U (en) * | 2015-06-16 | 2016-03-30 | 娄底职业技术学院 | Coal picker for coal mine |
| CN206064820U (en) * | 2016-08-23 | 2017-04-05 | 柳延涛 | A kind of removable Semen Maydiss screening machine that can improve screening effect |
| CN206139484U (en) * | 2016-11-02 | 2017-05-03 | 湖南金泰米业有限公司 | Rice processing screening installation |
| CN206661688U (en) * | 2017-03-06 | 2017-11-24 | 宁夏宁平炭素有限责任公司 | Multi-functional coal dedusting screening plant |
| CN207357601U (en) * | 2017-08-26 | 2018-05-15 | 杨丹 | A kind of crops sizing screening exclusion device |
| CN108114876A (en) * | 2017-12-15 | 2018-06-05 | 佛山市万良商贸有限公司 | A kind of screening plant for being used to measure coal granularmetric composition |
| CN108325818A (en) * | 2017-12-26 | 2018-07-27 | 共同科技开发有限公司 | A kind of feed screening plant of stable blanking |
| CN107899944A (en) * | 2017-12-30 | 2018-04-13 | 新乡市振英机械设备有限公司 | One kind plus edge formula vibrating screen |
| CN108580251A (en) * | 2018-03-26 | 2018-09-28 | 无锡康斯坦特动力科技有限公司 | A kind of sandstone screening plant with shock-absorbing function |
| CN108580259A (en) * | 2018-04-28 | 2018-09-28 | 连云港中意航空材料有限公司 | A kind of novel grain sorting and dust-extraction unit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114308606A (en) * | 2021-11-18 | 2022-04-12 | 华能碳资产经营有限公司 | Power plant coal conveying pipeline particle filtering and recycling device |
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