CN217816851U - Pulverized coal distributor - Google Patents
Pulverized coal distributor Download PDFInfo
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- CN217816851U CN217816851U CN202221068545.2U CN202221068545U CN217816851U CN 217816851 U CN217816851 U CN 217816851U CN 202221068545 U CN202221068545 U CN 202221068545U CN 217816851 U CN217816851 U CN 217816851U
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Abstract
The utility model provides a pulverized coal distributor, includes the distributor box, set up the ventilative cloth of horizontally fibre nylon in the distributor box, the area of the ventilative cloth of fibre nylon is greater than the sectional area of distributor box, the ventilative cloth of fibre nylon separates the distributor box for the last box on upper portion and the lower box of lower part, the top of going up the box sets up the buggy import, and the lower part side sets up a plurality of buggy exports, the bottom of box is provided with the air intake down. The utility model adopts an air inflation mode to fluidize the coal dust, thereby solving the problem of coal dust accumulation; one main path can be divided into a plurality of branches instead of two branches, so that the function of one input and multiple output of the pulverized coal under the action of one set of equipment is realized; finally, the utility model discloses still can the quick adjustment each branch road buggy transmission capacity, have simple structure, simple to operate, use characteristics such as nimble reliable, low cost.
Description
Technical Field
The utility model belongs to the technical field of pulverized coal combustion coal distribution auxiliary assembly, a pulverized coal distributor.
Background
Pulverized coal is stored in a pulverized coal bin after being pulverized, and enters a pulverized coal furnace for combustion through a pneumatic conveying pipeline after being measured by a pulverized coal scale. In practical industrial application, the combustion points in the furnace are multi-point combustion, the amount of the used coal powder is different, the traditional mode is a single-bin, single-scale and single-burner point mode, or after one part of the coal powder is divided into two parts by a single-bin and single-scale Y-shaped pulverized coal burner, the Y-shaped pulverized coal burners with different specifications are connected in series according to the amount of the combustion points and are sent to the combustion points.
The mode has the problems of high investment cost, large floor area, large engineering quantity and the like, high conveying cost, multiple maintenance points, incapability of adjusting the coal powder using amount and the like, and the Y-shaped coal pulverizer can cause coal powder accumulation and possibly cause safety accidents.
For example, CN112682812A discloses a pulverized coal distributor, which is provided with a cylinder, a shuttle-shaped distributing body, a driving assembly and a plurality of blades, wherein the driving assembly further comprises a rotary driver, a driving ring, a crank-swing link mechanism and a plurality of groups of link mechanisms.
CN104456602A discloses a pulverized coal distributor of pulverized coal burner of magnesium metal reduction furnace, comprising flange, large volume conical tube, flange, bolt, and obviously less parts compared with CN 112682812A. The coal powder distributor is designed into a conical large inner cavity, the size of the inner cavity is increased by the sudden change of the volume of the inner cavity, the powder gas is suddenly changed from high speed to low speed, the coal powder is in a suspended state, the coal powder is distributed in the inner cavity of the coal powder distributor in a diffused manner and then uniformly flows out of each coal powder branch pipe.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model aims to provide a pulverized coal distributor, which aims to solve the problems that pulverized coal is accumulated, the conveying is not smooth, the pulverized coal amount is not easy to adjust, and a plurality of sets of Y-shaped pulverized coal machines are needed to be combined to form a plurality of branches.
In order to realize the purpose, the utility model discloses a technical scheme be:
the utility model provides a pulverized coal distributor, includes the distributor box, set up the ventilative cloth of horizontally fibre nylon in the distributor box, the area of the ventilative cloth of fibre nylon is greater than the sectional area of distributor box, the ventilative cloth of fibre nylon separates the distributor box for the last box on upper portion and the lower box of lower part, the top of going up the box sets up the buggy import, and the lower part side sets up a plurality of buggy exports, the bottom of box is provided with the air intake down.
In one embodiment, the pulverized coal inlet is arranged in the center of the top of the upper box body, the air inlet is arranged in the center of the bottom of the lower box body, and the pulverized coal inlet and the air inlet are coaxially arranged.
In one embodiment, the diameter of the pulverized coal inlet is larger than that of the air inlet.
In one embodiment, the fiber nylon breathable cloth has the thickness of 6mm and the air permeability of 4-5m 3 Min, pore size range of 50-80 μm.
In one embodiment, the upper box body and the lower box body are in the same cross section, and the height of the upper box body is 4-5 times of the height of the lower box body.
In one embodiment, the number of the pulverized coal outlets is 6, and the pulverized coal outlets are uniformly distributed along the circumferential direction of the upper box body.
In one embodiment, the pulverized coal outlet has two specifications with different diameters, and the two specifications are arranged at intervals.
In one embodiment, the pulverized coal outlet is provided with a regulating valve.
In one embodiment, the air inlet is connected with air pressure of 2000-3000pa and air quantity of 500-700m 3 The centrifugal fan of the/h is an air source.
In one embodiment, the area of the fiber nylon air-permeable cloth and the cross-sectional area of the distributor box body satisfy the following relation: under the action of the wind pressure of 2000-3000pa, the middle part of the fiber nylon breathable cloth is 5-10mm higher than the edge part, so that the pulverized coal automatically flows to the pulverized coal outlet at the edge part.
Compared with the prior art, the utility model adopts an air inflation mode to fluidize the coal dust, thereby solving the problem of coal dust accumulation; one main path can be divided into a plurality of branches instead of two branches, so that the function of one input and multiple output of the pulverized coal under the action of one set of equipment is realized; finally, the utility model discloses still can the quick adjustment each branch road buggy transmission capacity, have simple structure, simple to operate, use characteristics such as nimble reliable, low cost.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a plan view of the present invention.
Fig. 3 is a top view of the internal sealing structure of the cylinder according to the present invention.
Detailed Description
The following describes embodiments of the present invention in detail with reference to the drawings and examples.
As shown in fig. 1, 2 and 3, the present invention provides a pulverized coal distributor, which comprises a distributor box. The utility model discloses in, the cross section of distributor box can be circular, square or other arbitrary shapes, and this embodiment adopts circularly, promptly, the distributor box is a columniform box structure.
The utility model discloses set up the ventilative cloth 4 of horizontally fibre nylon in the distributor box, the ventilative cloth 4 of fibre nylon separates the distributor box for upper portion last box 2 and lower box 5 of lower part. The bottom of lower box 5 is provided with air intake 6, and the top of going up box 2 sets up buggy import 1, exemplarily, thinks easily, the utility model discloses buggy import 1 and air intake 6's best setting form is: the pulverized coal inlet 1 is arranged in the center of the top of the upper box body 2, the air inlet 6 is arranged in the center of the bottom of the lower box body 5, the pulverized coal inlet 1 and the air inlet 6 are coaxially arranged and are opposite up and down, and the pulverized coal in the upper box body 2 is in a fluidized state by upward blowing through the air inlet 6. The side surface of the lower part of the upper box body 2 is provided with a plurality of coal powder outlets 3, namely, the coal powder outlets 3 are positioned above the fiber nylon breathable cloth 4.
In order to make the coal powder flow out along the coal powder outlet 3 during the aeration, the area of the fiber nylon breathable cloth 4 is larger than the sectional area of the distributor box body.
According to the structure, the utility model discloses a working method and principle are:
the pulverized coal is fed into the upper box body 2 from the pulverized coal inlet 1, air is blown into the lower box body 5 from the air inlet 6, the middle part of the fiber nylon breathable cloth 4 is blown up by wind power and is higher than the edge, and the fluidized pulverized coal is gathered at the edge of the bottom of the upper box body 2 and flows out from the pulverized coal outlet 3. Because the pulverized coal is in a fluidized state in the upper box body 2 all the time and can flow out from the pulverized coal outlet 3 quickly, the pulverized coal can be effectively prevented from being accumulated and conveyed unsmoothly.
The utility model discloses in, the time of the 4 middle parts of the ventilative cloth of fibre nylon are bloated should be guaranteed to the drum-in of air, and the buggy is the fluidization in last box 2, and for satisfying this target, generally, the wind pressure of the air supply that air intake 6 is connected is between 2000-3000pa, and the amount of wind is 500-700m 3 And specifically, the air source can adopt a centrifugal fan meeting the index requirement. Under the index, the middle part of the fiber nylon breathable cloth 4 is 5-10mm higher than the edge part, so that the pulverized coal can automatically flow to the pulverized coal outlet 3 at the edge part, and the fluidization state of the pulverized coal is not influenced.
The utility model discloses an optimal structure, the diameter of buggy import 1 is greater than the diameter of air intake 6, and this structure can make the buggy disperse as far as possible when getting into, is favorable to forming the fluidization state as early as possible under the blast air condition.
In order to better satisfy the shape of the fiber nylon breathable cloth 4 under the blast air and simultaneously ensure that the pulverized coal can not fall into the lower box body 5 in a large amount, the utility model provides a parameter of the fiber nylon breathable cloth 4, the thickness of the parameter is 6mm, and the air permeability is 4-5m 3 Min, pore diameterThe range is 50 μm to 80 μm. Under this parameter condition, both can guarantee permeating through fast of air, can guarantee again that the buggy can not pass fibre nylon ventilative cloth 4 and fall into box 5 down, simultaneously, thickness 6mm still possesses certain bearing capacity.
It is easy to understand that in the present invention, the upper box 2 and the lower box 5 should be of uniform cross-section box structure, and the height of the upper box 2 should be 4-5 times of the height of the lower box 5 to better satisfy the fluidized state of the pulverized coal in the upper box 2 and the flowing space thereof. Under the condition of the parameters, on one hand, the space of the upper box body 2 is enough to enable the pulverized coal to form a fluidized state and flow in the fluidized state, and on the other hand, the space of the lower box body 5 is enough to enable high-pressure air to transit in the upper box body, and the high-pressure air penetrates through the fiber nylon breathable cloth 4 in a mode of large middle wind power and small edge wind power, so that the pulverized coal above the edge part can be ensured to be in the fluidized state while the middle of the fiber nylon breathable cloth 4 is enabled to be bulged.
The utility model discloses a structure, the quantity of buggy export 3 is 6, along the circumference evenly distributed of last box 2. Illustratively, the pulverized coal outlet 3 may have a plurality of sizes with different diameters, two sizes are shown in fig. 2, and the two sizes are spaced apart. For realizing flow distribution, the utility model discloses all set up independent governing valve 7 at every buggy export 3, through governing valve 7, the buggy output quantity of adjustable each buggy export 3.
To sum up, the utility model discloses can distribute the multichannel with buggy all the way effectively to adjust each way buggy transmission capacity, thereby change original each way pipeline separately measure, transportation cost height, engineering volume are big, the maintenance point shortcoming such as many.
Additionally, the utility model discloses still need notice following several when processing preparation and installation:
1. the sealing of each flange interface must be ensured to be good, and the leakage of coal dust is prevented.
2. The regulating valve 7 preferably uses a gate valve, and the valve core fails after being worn because the resistance of the pipeline is too large due to the butterfly valve and the ball valve.
3. The turning radius of the pipeline connected with the pulverized coal outlet 3 is more than 5 times larger than the diameter of the conveying pipe in consideration of the installation position, so that air resistance is prevented.
Claims (10)
1. The utility model provides a pulverized coal distributor, includes the distributor box, its characterized in that, set up horizontally ventilative cloth of fibre nylon (4) in the distributor box, the area of ventilative cloth of fibre nylon (4) is greater than the sectional area of distributor box, ventilative cloth of fibre nylon (4) separates the distributor box for upper box (2) on upper portion and lower box (5) of lower part, the top of going up box (2) sets up buggy import (1), and the lower part side sets up a plurality of buggy exports (3), the bottom of lower box (5) is provided with air intake (6).
2. The pulverized coal distributor according to claim 1, wherein the pulverized coal inlet (1) is arranged at the top center of the upper box body (2), the air inlet (6) is arranged at the bottom center of the lower box body (5), and the pulverized coal inlet (1) and the air inlet (6) are coaxially arranged.
3. The pulverized coal distributor according to claim 1 or 2, characterized in that the diameter of the pulverized coal inlet (1) is larger than the diameter of the air inlet (6).
4. The pulverized coal distributor according to claim 1, wherein the air permeability of the fiber nylon air permeable cloth (4) is 4-5m 3 Min, pore diameter range of 50-80 μm.
5. The pulverized coal distributor according to claim 1, wherein the upper box (2) and the lower box (5) have the same cross section, and the height of the upper box (2) is 4-5 times of the height of the lower box (5).
6. The pulverized coal distributor according to claim 1, wherein the number of the pulverized coal outlets (3) is 6, and the pulverized coal outlets are uniformly distributed along the circumferential direction of the upper box body (2).
7. The pulverized coal distributor according to claim 6, wherein the pulverized coal outlet (3) has two sizes with different diameters, and the two sizes are arranged at intervals.
8. Coal dust distributor according to claim 1 or 6 or 7, characterized in that the coal dust outlet (3) is provided with a regulating valve (7).
9. The pulverized coal distributor according to claim 1, wherein the air inlet (6) is connected with an air pressure of 2000 pa to 3000pa and an air volume of 500 m to 700m 3 The centrifugal fan of the/h is an air source.
10. The pulverized coal distributor according to claim 9, wherein the area of the fiber nylon air-permeable cloth (4) is related to the sectional area of the distributor box body by the following relationship: under the action of the wind pressure of 2000-3000pa, the middle part of the fiber nylon breathable cloth (4) is 5-10mm higher than the edge part, so that the pulverized coal automatically flows to the pulverized coal outlet (3) at the edge part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221068545.2U CN217816851U (en) | 2022-05-06 | 2022-05-06 | Pulverized coal distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221068545.2U CN217816851U (en) | 2022-05-06 | 2022-05-06 | Pulverized coal distributor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217816851U true CN217816851U (en) | 2022-11-15 |
Family
ID=83982534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221068545.2U Active CN217816851U (en) | 2022-05-06 | 2022-05-06 | Pulverized coal distributor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217816851U (en) |
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2022
- 2022-05-06 CN CN202221068545.2U patent/CN217816851U/en active Active
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