CN217367711U - Integrated equipment for pulverized coal particle size classification and gas conveying dust removal - Google Patents
Integrated equipment for pulverized coal particle size classification and gas conveying dust removal Download PDFInfo
- Publication number
- CN217367711U CN217367711U CN202221365766.6U CN202221365766U CN217367711U CN 217367711 U CN217367711 U CN 217367711U CN 202221365766 U CN202221365766 U CN 202221365766U CN 217367711 U CN217367711 U CN 217367711U
- Authority
- CN
- China
- Prior art keywords
- cavity
- cylinder
- cone
- equal
- partition plate
- 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.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Abstract
The utility model discloses an integrated device for the particle size classification of pulverized coal and the dust removal of conveying gas, which comprises a cylinder body, wherein the bottom end of the cylinder body is connected with the large-aperture end of a cone body, the top end of the cylinder body is provided with a sealing head, and the sealing head, the cylinder body and the cone body form a closed cavity; the inner part of the cylinder body is provided with a cavity-dividing partition plate, the bottom edge of the cavity-dividing partition plate is in seamless connection with the inner surface of the cone body, the outer edges of two sides of the cavity-dividing partition plate are in seamless connection with the inner surface of the cylinder body, the outer edge of the top of the cavity-dividing partition plate is a cross line formed by the intersection of the surface of the cavity-dividing partition plate and a horizontal plane, the outer edge of the top of the cavity-dividing partition plate is not connected with any part of equipment, the small-caliber end of the cone body is communicated with the opening of the fine powder discharge pipe, the top of the end enclosure is communicated with an access hole and an exhaust pipe opening, and the surface of the cylinder body is provided with a feeding pipe. The utility model discloses can be applicable to the online preliminary fractionation of tiny particle diameter among the pneumatic transport fine coal and coarse grain diameter powder, and this equipment has easy operation, running cost low, easily examines the characteristics of maintenance.
Description
Technical Field
The utility model belongs to the technical field of the dust removal of gas is carried according to particle size initial segregation and powder to the powder granule, concretely relates to an integration equipment that is used for fine coal particle size classification and carries gas to remove dust.
Background
In the field of coal deep processing, part of process technologies have severe requirements on the particle size of raw material coal dust, and particularly, fine powder with too small particle size can cause great negative effects on certain downstream deep processing technologies. Generally, raw material coal is crushed into powder with certain particle size distribution by mechanical equipment such as a coal mill and the like, and the powder is buffered to an intermediate bin through a pneumatic conveying process and used as a raw material for further deep processing.
At present, in the conventional coal powder preparation process, dry coal powder with a particle size smaller than a certain particle size in a coal mill is blown out of the equipment to a dust removal bin by utilizing circulating airflow, then the dry coal powder is collected by a filter at the top of the dust removal bin and falls into the bin bottom to be discharged outside by virtue of gravity, and purified gas penetrating out of the filter enters the coal mill again after being pressurized by a circulating fan for recycling. However, the prepared pulverized coal is generally wide in particle size distribution, and the requirement of certain pulverized coal deep processing technology on the particle size index of the fed pulverized coal is difficult to achieve when the proportion of fine powder is high.
Therefore, aiming at the problem that the existing coal mill coal pulverizing system is difficult to remove the unqualified fine coal powder with smaller particle size, the development of the primary coal powder grading and separating device which can efficiently remove most of the fine coal powder with smaller particle size, has low operation cost and small modification range on the existing coal powder preparing system is urgently needed.
Disclosure of Invention
In order to overcome the technical problem above, an object of the utility model is to provide an integration equipment that is used for fine coal particle size grading and carries gas to remove dust, can be applicable to the online preliminary fractionation of tiny particle size and coarse grain diameter powder among the pneumatic transport fine coal, and this equipment has easy operation, running cost low, easily examines the characteristics of maintenance.
In order to realize the purpose, the utility model discloses a technical scheme is:
an integrated device for pulverized coal particle size classification and gas conveying dust removal comprises a cylinder body 7, wherein the bottom end of the cylinder body 7 is connected with a large-aperture end of a cone 1, an end enclosure 12 is arranged at the top end of the cylinder body 7, and the end enclosure 12, the cylinder body 7 and the cone 1 form a closed cavity; a cavity separating plate 8 is arranged inside the cylinder body 7, the bottom edge of the cavity separating plate 8 is connected with the inner surface of the cone body 1 in a seamless mode, the outer edges of the two sides of the cavity separating plate are connected with the inner surface of the cylinder body 7 in a seamless mode, the outer edge of the top of the cavity separating plate 8 is a cross line formed by the fact that the surface where the cavity separating plate 8 is located is intersected with the horizontal plane, the outer edge of the top of the cavity separating plate 8 is not connected with any part of equipment, the small-caliber end of the cone body 1 is communicated with the fine powder discharge pipe opening 2, the top of the seal head 12 is communicated with an overhauling hole 13 and an exhaust pipe opening 14, and a feeding pipe 6 is arranged on the surface of the cylinder body 7.
The cavity dividing partition plate 8 is a plane plate or a curved plate, and the cavity of the lower half side of the device is divided into a coarse powder cavity with a small volume and a fine powder cavity with a large volume by the cavity dividing partition plate 8.
The coarse powder cavity is formed by the cone 1, the cylinder 7 and the cavity separating partition plate 8, the bottom of the cone 1 is communicated with the coarse powder discharge pipe opening 3, the upper part of the bottom of the cone 1 is communicated with the fluidized gas pipe opening 4, the bottom of the cylinder 7 is communicated with the lower pressure measuring pipe opening 5, and the upper part of the bottom of the cylinder 7 is communicated with the feeding pipe 6.
An upper pressure measuring pipe orifice 9 and a manhole 15 are communicated with the cylinder body 7, wherein the horizontal height of the communication contact point position of the upper pressure measuring pipe orifice 9 and the cylinder body 7 is not lower than the highest point of the cavity separation plate 8.
The upper area of the cylinder 7 is in through connection with the back-blowing pipe 11, the back-blowing pipe 11 is communicated with a plurality of groups of nozzles which are connected in parallel and all aim at the filter bag units of the filter bag assembly 10, the support framework unit of the filter bag assembly 10 is detachably connected with the upper area of the cylinder 7, and the filter bag units are detachably connected with the support framework unit.
The lowest point of the filter bag assembly 10 is higher than the highest point of the cavity partition plate 8, the distance between the two is L3, the highest point of the cavity partition plate 8 is higher than the highest point of the feeding pipe 6, the distance between the two is L2, the lowest point of the outlet end of the feeding pipe 6 is higher than the high point of the joint of the lower pressure measuring pipe orifice 5 and the cylinder body 7, and the distance between the two is L1, and the above sizes need to meet the following constraint conditions, namely, L1 is larger than or equal to 400mm and smaller than or equal to 4000mm, L2 is larger than or equal to 500mm and smaller than or equal to 5000mm, and L3 is larger than or equal to 300mm and smaller than or equal to 9000 mm.
After the feeding pipe 6 extends into the barrel 7 from the outside of the device, a wear-resistant elbow with a vertically downward outlet is seamlessly connected to the end of the feeding pipe 6.
The cone angle of the cone 1 is a, the distance between the outer end of the fine powder outer discharge pipe orifice 2 and the outer end of the exhaust pipe orifice 14 is H, the outer diameter of the cylinder 7 is D, and the above dimensions need to meet the following constraint conditions, namely a is more than or equal to 45 degrees and less than or equal to 140 degrees, H is more than or equal to 3000mm and less than or equal to 25000mm, and D is more than or equal to 1500mm and less than or equal to 15000 mm.
The utility model has the advantages that:
the utility model discloses a cavity baffle and filter bag subassembly's ingenious setting in the equipment utilizes the inherent kinetic energy of gas-solid two-phase flow to realize the high efficiency separation of coarse grain and fine particle in fine coal transportation process, makes simultaneously to carry gas can dust cleaning and further recycle, and this technique has established the equipment foundation of consolidating for the hierarchical utilization of different granularity fine coal. In addition, the equipment has the advantages of simple structure, low running cost, small operation difficulty and easy disassembly, maintenance and replacement of the internal parts.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
wherein, 1, a cone; 2. a fine powder discharge pipe orifice; 3. a coarse powder discharge pipe orifice; 4. a fluidizing gas pipe orifice; 5. a pressure measuring pipe orifice is arranged; 6. a feed pipe; 7. a barrel; 8. a cavity separation plate; 9. an upper pressure measuring pipe orifice; 10. a filter bag assembly; 11. blowback pipe fittings; 12. sealing the end; 13. an access hole; 14. an exhaust pipe orifice; 15. a manhole.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in figure 1, the integrated equipment for pulverized coal granularity grading and conveying gas dust removal comprises a cone 1, a fine powder outer discharge pipe orifice 2, a coarse powder outer discharge pipe orifice 3, a fluidized gas pipe orifice 4, a lower pressure measuring pipe orifice 5, a feeding pipe 6, a barrel 7, a cavity partition plate 8, an upper pressure measuring pipe orifice 9, a filter bag component 10, a back blowing pipe fitting 11, an end enclosure 12, an access hole 13, an exhaust pipe orifice 14 and a manhole 15.
The bottom end of the cylinder body 7 is in seamless connection with the large-caliber end of the cone 1, and the top end of the cylinder body 7 is in seamless connection with the seal head 12, so that a closed cavity comprising the seal head, the cylinder body and the cone is formed.
The cavity-dividing partition plate 8 is a flat plate or a curved plate, the bottom edge of the panel is in seamless connection with the inner surface of the cone 1, the outer edges of the two sides of the panel are in seamless connection with the inner surface of the cylinder 7, the outer edge of the top of the panel is an intersection line formed by the intersection of the surface of the cavity-dividing partition plate 8 and a horizontal plane, and the outer edge of the top is not connected with any part of equipment. The cavity partition plate 8 divides the lower half side cavity of the device into a coarse powder cavity with a small volume and a fine powder cavity with a large volume.
The small-caliber end of the cone 1 is communicated with the fine powder discharge pipe orifice 2. In a coarse powder cavity formed by the cone 1, the cylinder 7 and the cavity separating partition plate 8, the bottom of the cone 1 is communicated with a coarse powder outer discharge pipe opening 3, the upper part of the bottom of the cone 1 is communicated with a fluidized gas pipe opening 4, the bottom of the cylinder 7 is communicated with a lower pressure measuring pipe opening 5, and the upper part of the bottom of the cylinder 7 is communicated with a feeding pipe 6.
An upper pressure measuring pipe orifice 9 and a manhole 15 are communicated with the cylinder body 7, wherein the horizontal height of the communication contact point position of the upper pressure measuring pipe orifice 9 and the cylinder body 7 is not lower than the highest point of the cavity separation plate 8.
The back-blowing pipe fitting 11 is communicated with the upper region of the cylinder 7, and the back-blowing pipe fitting 11 is communicated with a plurality of groups of nozzles which are connected in parallel and all aim at the filter bag units of the filter bag assembly 10. The support framework unit of the filter bag assembly 10 is detachably connected with the upper area of the cylinder 7, and the filter bag unit is detachably connected with the support framework unit.
The seal head 12 is communicated with an access hole 13 and an exhaust pipe opening 14.
After the feeding pipe 6 extends into the barrel 7 from the outside of the device, a wear-resistant elbow with a vertically downward outlet is seamlessly connected to the end of the feeding pipe 6.
The lowest point of the filter bag assembly 10 is higher than the highest point of the cavity partition plate 8, the distance between the two is L3, the highest point of the cavity partition plate 8 is higher than the highest point of the feeding pipe 6, the distance between the two is L2, the lowest point of the outlet end of the feeding pipe 6 is higher than the high point of the joint of the lower pressure measuring pipe orifice 5 and the cylinder body 7, and the distance between the two is L1, and the above sizes need to meet the following constraint conditions, namely, L1 is larger than or equal to 400mm and smaller than or equal to 4000mm, L2 is larger than or equal to 500mm and smaller than or equal to 5000mm, and L3 is larger than or equal to 300mm and smaller than or equal to 9000 mm.
The cone angle of the cone 1 is a, the distance between the outer end of the fine powder outer discharge pipe orifice 2 and the outer end of the exhaust pipe orifice 14 is H, the outer diameter of the cylinder 7 is D, and the above dimensions need to meet the following constraint conditions, namely a is more than or equal to 45 degrees and less than or equal to 140 degrees, H is more than or equal to 3000mm and less than or equal to 25000mm, and D is more than or equal to 1500mm and less than or equal to 15000 mm.
The utility model discloses a theory of operation:
the raw material coal powder carried by the conveying gas flows into a coarse powder cavity of the equipment through the feeding pipe 6 in a flow state of gas-solid two-phase flow, under the flow guiding action of a vertical downward elbow at the end of the feeding pipe 6, the coal powder with larger particle size is thrown to be lower in the cavity under the action of inertia, and is discharged outside through a coarse powder outer discharge pipe opening 3, and the coal powder with fine particles is carried outside the coarse powder cavity by turbulent airflow matting rolls. The conveying airflow penetrates the filter bag assembly 10 after leaving the coarse powder chamber area and then is discharged out through the exhaust nozzle 14, and the fine powder intercepted on the filter bag assembly 10 falls into the bottom of the fine powder chamber under the action of periodic blowback and gravity of blowback air from the blowback pipe fitting 11 and is discharged out through the fine powder discharge nozzle 2.
Claims (8)
1. The integrated equipment for pulverized coal granularity grading and gas conveying dust removal is characterized by comprising a cylinder (7), wherein the bottom end of the cylinder (7) is connected with the large-aperture end of a cone (1), the top end of the cylinder (7) is provided with an end enclosure (12), and the end enclosure (12), the cylinder (7) and the cone (1) form a closed cavity; barrel (7) inside is provided with and divides chamber baffle (8), divides the inner surface seamless connection of the bottom edge of chamber baffle (8) and cone (1), and the inner surface seamless connection of both sides outer fringe and barrel (7), and the top outer fringe is for dividing the crossing intersection line that forms of chamber baffle (8) place face and horizontal plane, divides chamber baffle (8) top outer fringe not to be connected with any position of equipment, the small-bore end and the outer discharge pipe mouth (2) intercommunication of farine of cone (1), head (12) top intercommunication is provided with access hole (13), exhaust pipe mouth (14), and barrel (7) surface sets up inlet pipe (6).
2. The integrated equipment for the particle size classification and the dust removal of the conveying gas of the pulverized coal as claimed in claim 1, wherein the chamber-dividing partition plate (8) is a flat plate or a curved plate, and the chamber-dividing partition plate (8) divides the lower half-side chamber of the equipment into a coarse powder chamber with a smaller volume and a fine powder chamber with a larger volume.
3. The integrated equipment for the particle size classification and the dust removal of the conveying gas of the pulverized coal as claimed in claim 2, wherein the cone (1), the cylinder (7) and the cavity separating partition plate (8) form a coarse powder cavity, the bottom of the cone (1) is communicated with a coarse powder outer discharge pipe opening (3), the bottom of the cone (1) is communicated with a fluidizing gas pipe opening (4) from the upper part, the bottom of the cylinder (7) is communicated with a lower pressure measuring pipe opening (5), and the bottom of the cylinder (7) is communicated with the feeding pipe (6) from the upper part.
4. The integrated equipment for the particle size classification and the dust removal of the conveying gas of the pulverized coal as claimed in claim 1, wherein an upper pressure measuring pipe orifice (9) and a manhole (15) are communicated with the cylinder body (7), and the horizontal height of the communication contact point position of the upper pressure measuring pipe orifice (9) and the cylinder body (7) is not lower than the highest point of the cavity separation plate (8).
5. The integrated equipment for the particle size classification and the dust removal of the conveyed gas of the pulverized coal as claimed in claim 1, wherein the upper region of the cylinder (7) is communicated with a back-blowing pipe (11), the back-blowing pipe (11) is communicated with a plurality of groups of nozzles which are connected in parallel and all aim at the filter bag units of the filter bag assembly (10), the support framework unit of the filter bag assembly (10) is detachably connected with the upper region of the cylinder (7), and the filter bag units are detachably connected with the support framework unit.
6. The integrated equipment for pulverized coal particle size classification and dust removal through conveying gas as claimed in claim 5, wherein the lowest point of the filter bag assembly (10) is higher than the highest point of the cavity partition plate (8) and the distance between the two is L3, the highest point of the cavity partition plate (8) is higher than the highest point of the feeding pipe (6) and the distance between the two is L2, the lowest point of the outlet end of the feeding pipe (6) is higher than the highest point of the joint of the lower pressure measuring pipe orifice (5) and the barrel body (7) and the distance between the two is L1, and the sizes meet the following constraint conditions that L1 is larger than or equal to 400mm and smaller than or equal to 4000mm, L2 is larger than or equal to 500mm and smaller than or equal to 5000mm, and L3 is larger than or equal to 9000 mm.
7. The integrated equipment for the particle size classification and the dust removal of the conveying gas of the pulverized coal as claimed in claim 6, wherein the end of the feeding pipe (6) is seamlessly connected with a wear-resistant elbow with a downward outlet after the feeding pipe (6) extends into the barrel (7) from the outside of the equipment.
8. The integrated equipment for the particle size classification and the dust removal of conveying gas of pulverized coal as claimed in claim 1, wherein the cone angle of the cone (1) is a, the distance between the outer end of the fine powder discharge pipe orifice (2) and the outer end of the exhaust pipe orifice (14) is H, the outer diameter of the cylinder (7) is D, and the above dimensions satisfy the following constraint conditions that a is greater than or equal to 45 degrees and less than or equal to 140 degrees, H is greater than or equal to 3000mm and less than or equal to 25000mm, and D is greater than or equal to 1500mm and less than or equal to 15000 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221365766.6U CN217367711U (en) | 2022-06-02 | 2022-06-02 | Integrated equipment for pulverized coal particle size classification and gas conveying dust removal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221365766.6U CN217367711U (en) | 2022-06-02 | 2022-06-02 | Integrated equipment for pulverized coal particle size classification and gas conveying dust removal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217367711U true CN217367711U (en) | 2022-09-06 |
Family
ID=83090781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221365766.6U Active CN217367711U (en) | 2022-06-02 | 2022-06-02 | Integrated equipment for pulverized coal particle size classification and gas conveying dust removal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217367711U (en) |
-
2022
- 2022-06-02 CN CN202221365766.6U patent/CN217367711U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102397841B (en) | Bidirectional airflow submicron powder sorting machine | |
| CN105032763A (en) | Sorting machine | |
| CN202725512U (en) | Full-grain high-efficiency dry coal preparation system for power coal separation | |
| CN212120278U (en) | Fluidized bed jet mill | |
| AU2010352883A1 (en) | Apparatus for pneumatic vacuum separation of bulk materials | |
| CN205008233U (en) | Sorting machine | |
| CN207521126U (en) | Efficient air flow grinding production line | |
| CN108607809A (en) | A kind of multistage feed powder grading plant and its method | |
| CN102784757B (en) | Efficient airflow classification fine-coal remover for power coal before selecting | |
| CN204841874U (en) | Energy -efficient fluid energy mill | |
| CN217367711U (en) | Integrated equipment for pulverized coal particle size classification and gas conveying dust removal | |
| CN208810261U (en) | A kind of normal pressure pulverized coal preparation system of adjustable size distribution | |
| CN108906289B (en) | Composite superfine powder jet mill with self material as jet medium | |
| CN208894380U (en) | A kind of medicinal herb grinder group | |
| CN215878239U (en) | Fluidized bed type crushing device | |
| CN210279412U (en) | Fluidized bed collision type jet mill | |
| CN202725501U (en) | Fines removal all-in-one machine used for dry-method classification before steam coal preparation | |
| CN204933622U (en) | A kind of tilt material pipeline of airslide disintegrating mill | |
| CN209612409U (en) | A kind of rear of sintering machine dust settling formula dust-extraction unit | |
| CN109046717B (en) | Composite superfine powder jet mill | |
| CN205392995U (en) | Perpendicular flow pattern gravity -type air classifier | |
| CN112206907A (en) | Sepiolite ore powder grinding and grading method based on negative pressure screening | |
| CN104607385A (en) | Trash sorting device and method | |
| CN202277874U (en) | Air-flow pulverizer feeding device | |
| CN204638542U (en) | A kind of garbage sorting equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |