CN212702225U - Pulverized coal screening device for thermal power plant - Google Patents
Pulverized coal screening device for thermal power plant Download PDFInfo
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- CN212702225U CN212702225U CN202021312415.XU CN202021312415U CN212702225U CN 212702225 U CN212702225 U CN 212702225U CN 202021312415 U CN202021312415 U CN 202021312415U CN 212702225 U CN212702225 U CN 212702225U
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- screening
- cylinder
- pulverized coal
- thermal power
- wall
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- 238000012216 screening Methods 0.000 title claims abstract description 92
- 239000003245 coal Substances 0.000 title claims abstract description 34
- 244000309464 bull Species 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 3
- 238000007873 sieving Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 abstract description 3
- 239000008187 granular material Substances 0.000 description 6
- 239000004744 fabric Substances 0.000 description 5
- 239000000446 fuel Substances 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a pulverized coal screening device for thermal power plants in the field of pulverized coal screening for thermal power plants, which comprises a screening cylinder, a support rod is fixed on the side wall of the screening cylinder, a cylinder cover is arranged at the top end of the screening cylinder, an opening is arranged at the top end of the cylinder cover, a discharge hole is arranged at the center of the bottom end of the screening cylinder, two groups of arc-shaped grooves are symmetrically arranged on the inner wall of the screening cylinder, the arc-shaped grooves are provided with a rotating shaft, the rotating shaft is rotatably connected with a buffer disc, a discharging groove is arranged at the center of the top end of the buffer disc, two groups of connecting springs are symmetrically fixed on the chute below the top end of the buffer disc, the end parts of the connecting springs are fixed on the inner wall of the screening cylinder, a ring-shaped vibrator is arranged inside the ring-shaped groove, a screening net is arranged on, the rotating rod rotates to penetrate through the cylinder cover, and a first rotating blade and a second rotating blade are fixed on the side wall of the rotating rod.
Description
Technical Field
The utility model relates to a pulverized coal screening field of thermal power plant specifically is a pulverized coal screening device of thermal power plant.
Background
A thermal power plant, referred to as a thermal power plant, is a plant that produces electric energy using a combustible (e.g., coal) as a fuel. The basic production process is as follows: the fuel heats water to generate steam when burning, chemical energy of the fuel is converted into heat energy, the steam pressure pushes a steam turbine to rotate, the heat energy is converted into mechanical energy, then the steam turbine drives a generator to rotate, the mechanical energy is converted into electric energy, the combustible material adopted by a thermal power plant is coal fuel, the coal fuel needs to be manufactured into coal powder to ensure the sufficient burning of the coal, the burning effect of the coal powder is determined by the fineness of the coal powder, the coal powder is insufficiently burned and incompletely burned due to the overlarge fineness, and therefore the coal powder needs to be screened before use.
At present, chinese patent with application number CN201621332123.6 discloses a pulverized coal screening plant for thermal power plant, which comprises a housin, rotating vane, first fan, baffle and circulating pipe, be provided with the feed inlet on the casing, the inside rotation axis that is provided with of screening net, rotating vane one end is connected with the rotation axis, first fan is symmetrical structural distribution in the both sides of casing, the baffle top is provided with the screening net, communicating pipe inside is provided with the rotor plate, grind the inside fixed mounting in room and have grinding roller, grinding roller is connected with the motor, ejection of compact house steward both sides are provided with the support base, be provided with the second fan on the circulating pipe. This pulverized coal screening plant for thermal power plant is equipped with the brush, and the brush has just can brush down the large granule buggy that blocks in the mesh on the screen cloth at the in-process of constantly rotating to can improve the screening effect, however, use the device to carry out thermal power plant's buggy screening, handle the granule of card in the mesh through the mode of brush rotation brush, because the screen cloth is flexible structure, can't ensure that its inside granule that blocks is brushed out. Based on this, the utility model designs a pulverized coal sieving mechanism of thermal power plant.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a pulverized coal sieving mechanism of thermal power plant to the granule of card in the mesh is handled to the mode through the brush handle rotation brush that proposes in solving above-mentioned background, because the screen cloth is flexible structure, can't ensure that its inside granule that blocks is brushed out problem.
In order to achieve the above object, the utility model provides a following technical scheme:
a pulverized coal screening device for a thermal power plant comprises a screening cylinder, wherein a supporting rod is fixed on the side wall of the screening cylinder, a cylinder cover is arranged at the top end of the screening cylinder, an opening is formed in the top end of the cylinder cover, a discharge hole is formed in the center of the bottom end of the screening cylinder, two groups of arc-shaped grooves are symmetrically formed in the inner wall of the screening cylinder, a rotating shaft is arranged on each arc-shaped groove, the rotating shaft is rotatably connected with a buffer disc, a discharging groove is formed in the center of the top end of the buffer disc, two groups of connecting springs are symmetrically fixed on the grooves below the top end of the buffer disc, the end parts of the connecting springs are fixed on the inner wall of the screening cylinder, a circular groove is formed in the inner wall of the screening cylinder, a circular vibrator is installed in the circular groove, a screening net is arranged on the side wall of the, the motor output end is connected with the bull stick, the bull stick rotates and runs through the cover, be fixed with first commentaries on classics leaf and second commentaries on classics leaf on the bull stick lateral wall.
Preferably, the three groups of support rods are arranged, the circumference of each support rod is evenly arranged at the center of the side wall of the screening cylinder, the support rods are welded and fixed on the side wall of the screening cylinder, and a sealing ring is arranged at the contact position of the bottom end of the cylinder cover and the screening cylinder.
Preferably, there is the clearance between two sets of the buffer disc, the silo is for the right angle trapezoidal channel to the inclined of screening drum center down, two sets of connecting spring slope sets up and tip welded fastening is at the screening drum inner wall.
Preferably, the horizontal plane of the arc-shaped groove is higher than the horizontal plane of the center of the screening cylinder, the horizontal plane of the annular groove is lower than the horizontal plane of the center of the screening cylinder, and the height of the screening net is greater than that of the annular groove.
Preferably, the position that the perforation runs through the screen cylinder lateral wall is between arc wall bottom and ring channel top, the perforation is close to the ring channel top and sets up, pipe end and perforation are located the inside vertical face that obtains the tip and locate of screen cylinder and are same vertical face.
Preferably, the length of the rotating rod is greater than the distance from the top end of the screening cylinder to the bottom end of the arc-shaped groove, the length of the rotating rod is smaller than the distance from the top end of the screening cylinder to the top end of the screen, the horizontal plane where the first rotating blade is located and the horizontal plane where the center of the arc-shaped groove is located are the same horizontal plane, and the second rotating blade is made of elastic telescopic materials.
Compared with the prior art, the beneficial effects of the utility model are that: by arranging the arc-shaped groove, the rotating shaft, the buffer disc and the connecting spring, in the process that the pulverized coal reaches the screening net through the opening, firstly, the buffering is carried out through the buffer disc, along with the accumulation of the pulverized coal, the connecting spring is stretched under the action of gravity, the buffer disc rotates downwards, and the pulverized coal slowly falls through the blanking groove, so that the pulverized coal is conveniently screened; by arranging the motor, the rotating rod, the first rotating blade and the second rotating blade, the pulverized coal is stirred and scattered in the falling process of the pulverized coal, so that the pulverized coal is screened; the annular vibrator is arranged to continuously shake the screening net to avoid blockage; through setting up perforation and pipe, after the screening is accomplished, usable outside air extraction equipment of pipe can take out the unqualified buggy on the screen cloth.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings described below are only examples of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic sectional view of the present invention;
fig. 3 is a schematic view of the buffer tray of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1-screening cylinder, 2-supporting rod, 3-cylinder cover, 30-opening, 4-discharging port, 5-arc groove, 6-rotating shaft, 7-buffer disc, 8-blanking groove, 9-connecting spring, 10-annular groove, 11-annular vibrator, 12-screening net, 14-conduit, 15-motor, 16-rotating rod, 17-first rotating blade and 18-second rotating blade.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the examples of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution:
as shown in figures 1 and 2, the pulverized coal screening device for the thermal power plant comprises a screening cylinder 1, wherein three groups of supporting rods 2 are fixed on the side wall of the screening cylinder 1, the circumferences of the three groups of supporting rods 2 are uniformly arranged in the center of the side wall of the screening cylinder 1, the supporting rods 2 are welded and fixed on the side wall of the screening cylinder 1, a cylinder cover 3 is arranged at the top end of the screening cylinder 1, a sealing ring is arranged at the contact position of the bottom end of the cylinder cover 3 and the screening cylinder 1, an opening 30 is arranged at the top end of the cylinder cover 3, a discharge hole 4 is arranged at the center of the bottom end of the screening cylinder 1, two groups of arc-shaped grooves 5 are symmetrically arranged on the inner wall of the screening cylinder 1, the arc-shaped grooves 5 are positioned on a horizontal plane higher than the center of the screening cylinder 1, a rotating shaft 6 is arranged on the arc-shaped grooves 5, the rotating shaft 6 is rotatably, two groups of connecting springs 9 are symmetrically fixed on a trough 8 below the top end of a buffer disc 7 for symmetrical objects, the two groups of connecting springs 9 are obliquely arranged, the end parts of the two groups of connecting springs 9 are welded and fixed on the inner wall of a screening cylinder 1, the end parts of the connecting springs 9 are fixed on the inner wall of the screening cylinder 1, an annular groove 10 is formed in the inner wall of the screening cylinder 1, the horizontal plane where the annular groove 10 is located is lower than the horizontal plane where the center of the screening cylinder 1 is located, an annular vibrator 11 is installed inside the annular groove 10, a screening net 12 is arranged on the side wall of the annular vibrator 11, the height of the screening net 12 is greater than that of the annular groove 10, through holes 13 are formed in the side wall of the screening cylinder 1, the positions of the through holes 13, between the bottom end of an arc-shaped groove 5 and the top end of the annular groove 10, guide pipes 14 are installed;
as shown in fig. 3, motor 15 is installed at the top center of cover 3, motor 15 output is connected with bull stick 16, the length of bull stick 16 is greater than the distance from 1 top of filter screen to 5 bottoms of arc wall, the length of bull stick 16 is less than the distance between 1 top of filter screen to 12 tops of screen cloth, bull stick 16 rotates and runs through cover 3, be fixed with first commentaries on classics leaf 17 and second commentaries on classics leaf 18 on the bull stick 16 lateral wall, the horizontal plane that first commentaries on classics leaf 17 locates and the horizontal plane that 5 centers of arc wall locate are same horizontal plane, second commentaries on classics leaf 18 flexible material preparation forms.
One specific application of this embodiment is: the buggy passes through opening 30 and gets into in the filter cylinder 1, at first fall and cushion on buffer disc 7, avoid the buggy to impact with great volume and fall on screening net 12, along with the continuous accumulation of buggy, under the action of gravity, connecting spring 9 is tensile, under the cooperation of pivot 6, buffer disc 7 down, the buggy is from the chute 9 landing gradually down, in the in-process of landing, rotate through first commentaries on classics leaf 17 and second commentaries on classics leaf 18 and break up, make its dispersion even fall on screening net 12, screening net 12 is under the effect of annular vibrator 11, constantly shake, avoid the jam of screening net 12 when the buggy is screened meticulous, after the screening is accomplished, close motor 15, utilize the external air extraction equipment of pipe 14, under the effect of shape vibrator 11, take out the large granule buggy on screening net 12.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (6)
1. The utility model provides a pulverized coal sieving mechanism of thermal power plant, includes a screen cylinder (1), its characterized in that: the screening cylinder is characterized in that a supporting rod (2) is fixed on the side wall of the screening cylinder (1), a cylinder cover (3) is arranged at the top end of the screening cylinder (1), an opening (30) is formed in the top end of the cylinder cover (3), a discharge hole (4) is formed in the center of the bottom end of the screening cylinder (1), two groups of arc-shaped grooves (5) are symmetrically formed in the inner wall of the screening cylinder (1), a rotating shaft (6) is arranged on the arc-shaped grooves (5), a buffer disc (7) is rotatably connected to the rotating shaft (6), a blanking groove (8) is formed in the center of the top end of the buffer disc (7), two groups of connecting springs (9) are symmetrically fixed below the top end of the buffer disc (7) and are symmetrically fixed to the material, the end parts of the connecting springs (9) are fixed on the inner wall of the screening cylinder (1), an annular groove (10), be provided with on annular electromagnetic shaker (11) lateral wall screening net (12), perforation (13) have been seted up on screening drum (1) lateral wall, install pipe (14) in perforation (13), motor (15) are installed at cover (3) top center, motor (15) output is connected with bull stick (16), bull stick (16) are rotated and are run through cover (3), be fixed with first commentaries on classics leaf (17) and second commentaries on classics leaf (18) on bull stick (16) lateral wall.
2. The pulverized coal screening device of the thermal power plant according to claim 1, characterized in that: the utility model discloses a screening drum, including a screening drum (1), branch (2) total three groups and circumference evenly set up at screening drum (1) lateral wall center, branch (2) welded fastening is on screening drum (1) lateral wall, cover (3) bottom and screening drum (1) position of contacting are provided with the sealing washer.
3. The pulverized coal screening device of the thermal power plant according to claim 1, characterized in that: there is the clearance between two sets of buffer disc (7), lower silo (8) are for the right angle trapezoidal channel to the central slope of screen cylinder (1), two sets of connecting spring (9) slope sets up and tip welded fastening is at screen cylinder (1) inner wall.
4. The pulverized coal screening device of the thermal power plant according to claim 1, characterized in that: the horizontal plane of the arc-shaped groove (5) is higher than the horizontal plane of the center of the screening cylinder (1), the horizontal plane of the annular groove (10) is lower than the horizontal plane of the center of the screening cylinder (1), and the height of the screening net (12) is greater than that of the annular groove (10).
5. The pulverized coal screening device of the thermal power plant according to claim 1, characterized in that: perforation (13) run through the position of screening cylinder (1) lateral wall between arc wall (5) bottom and ring channel (10) top, perforation (13) are close to ring channel (10) top and set up, pipe (14) tip and perforation (13) are located inside the vertical face that obtains the tip and locate of screening cylinder (1) and are same vertical face.
6. The pulverized coal screening device of the thermal power plant according to claim 1, characterized in that: the length of bull stick (16) is greater than the distance of screening cylinder (1) top to arc wall (5) bottom, the length of bull stick (16) is less than the distance between screening cylinder (1) top to screening net (12) top, the horizontal plane that first commentaries on classics leaf (17) were located and the horizontal plane that arc wall (5) center was located are same horizontal plane, second commentaries on classics leaf (18) flexible material preparation forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021312415.XU CN212702225U (en) | 2020-07-07 | 2020-07-07 | Pulverized coal screening device for thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021312415.XU CN212702225U (en) | 2020-07-07 | 2020-07-07 | Pulverized coal screening device for thermal power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212702225U true CN212702225U (en) | 2021-03-16 |
Family
ID=74965463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021312415.XU Withdrawn - After Issue CN212702225U (en) | 2020-07-07 | 2020-07-07 | Pulverized coal screening device for thermal power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212702225U (en) |
-
2020
- 2020-07-07 CN CN202021312415.XU patent/CN212702225U/en not_active Withdrawn - After Issue
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210511 Address after: 13 / F and 14 / F, Huaneng Henan building, 40 Zhengguang North Street, Zhengdong New District, Zhengzhou City, Henan Province, 450018 Patentee after: HUAENG INTERNATIONAL POWER Co.,Ltd. HENAN CLEAN ENERGY BRANCH Address before: 450018 Huaneng Henan building, 40 Zhengguang North Street, Zhengdong New District, Zhengzhou City, Henan Province Patentee before: Liu Shaoqiang |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20210316 Effective date of abandoning: 20231221 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20210316 Effective date of abandoning: 20231221 |