CN203577967U - Coal dropping pipe and coal dropping mechanism - Google Patents
Coal dropping pipe and coal dropping mechanism Download PDFInfo
- Publication number
- CN203577967U CN203577967U CN201320766345.9U CN201320766345U CN203577967U CN 203577967 U CN203577967 U CN 203577967U CN 201320766345 U CN201320766345 U CN 201320766345U CN 203577967 U CN203577967 U CN 203577967U
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- Prior art keywords
- coal
- tube section
- section
- tube
- conical surface
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- 239000003245 coal Substances 0.000 title claims abstract description 157
- 210000003141 lower extremity Anatomy 0.000 claims description 13
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 238000003466 welding Methods 0.000 claims description 6
- 239000002817 coal dust Substances 0.000 abstract description 18
- 238000004140 cleaning Methods 0.000 abstract description 3
- 230000005494 condensation Effects 0.000 abstract 2
- 238000009833 condensation Methods 0.000 abstract 2
- 230000000903 blocking effect Effects 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Disintegrating Or Milling (AREA)
- Crushing And Grinding (AREA)
Abstract
The utility model discloses a coal dropping pipe used for a coal mill. The lower edge of the coal dropping pipe is suitable to extent into a conical surface (4) of the coal mill and is spaced from the conical surface. The coal dropping pipe comprises an upper pipe section (1) and a lower pipe section (2), which are connected with each other, wherein the inner diameter of the lower pipe section (2) is larger than that of the upper pipe section (1). The utility model also discloses a coal dropping mechanism. By adopting the coal dropping pipe and the coal dropping mechanism, the moisture condensation position in the coal dropping pipe used for the coal mill is in the lower pipe section with larger inner diameter, and when coal dust adheres to the inner wall of the coal dropping pipe due to condensation of the moisture in the coal dust, the agglomerating coal dust can be prevented from blocking the coal dropping pipe, thus avoiding impacts of blockage of the coal dropping pipe on coal dust processing and avoiding often manually cleaning the coal dropping pipe.
Description
Technical field
The utility model relates to coal processing field, particularly, relates to a kind of coal unloading tube and coal breakage mechanism.
Background technology
In Coal dressing system, feeder is carried raw coal by coal unloading tube to coal pulverizer, but situation about stopping up often occurs in this coal unloading tube.Especially the raw coal collecting in the colliery of water enrichment area, more easily causes coal unloading tube to stop up.
This is because the larger raw coal of moisture is when entering coal unloading tube, because the temperature difference in mill bowl and the coal unloading tube of coal pulverizer is larger, the temperature of the raw coal in coal unloading tube is outdoor temperature, for example be about 19 ℃, and mean temperature in coal pulverizer is about 160 ℃, so have the temperature in a region reach the dew point of moisture, the dew point district that this region is moisture the coal unloading tube pipeline section between coal pulverizer from exporting to of feeder.
Known in on-the-spot record by each processing chute blockage, occur stop up position conventionally coal unloading tube from upwards 600mm of coal pulverizer, raw coal is combined with the part fine powder at the place of grinding herein, is suspended in coal unloading tube, and adheres on the tube wall in dew point district.And feeder sealing air enters after coal unloading tube the primary air pressure generation balance with coal pulverizer, duff grain is in equilibrium area inner suspension and tube wall bonding.
As time goes on, along with the increase of coal-supplying amount, the caking in dew point district is increasing, make the tube wall internal diameter of coal unloading tube of this part more and more less, finally cause coal unloading tube to stop up, thereby cause that the fault of pulverized coal preparation system even stops transport, to electric power enterprise, cause very large loss.
Utility model content
The purpose of this utility model is to provide a kind of coal unloading tube for coal pulverizer, and this coal unloading tube is for delivery of coal dust and can prevent obstruction.
To achieve these goals, the utility model provides a kind of coal unloading tube for coal pulverizer, within the lower limb of this coal unloading tube is suitable for extending to the taper surface of described coal pulverizer and with described taper surface separately, wherein, described coal unloading tube comprises interconnective upper pipeline section and lower tube section, and the internal diameter of this lower tube section is greater than the internal diameter of pipeline section on this.
Preferably, the internal diameter of described upper pipeline section is 610mm-630mm, and the internal diameter of described lower tube section is 710mm-730mm.
Preferably, the length of described lower tube section is 960mm-990mm.
Preferably, between described upper pipeline section and described lower tube section, by changeover portion, link together, the lower end of described upper pipeline section and the welding of the upper end of described changeover portion, the upper end of described lower tube section and the welding of the lower end of described changeover portion.
Preferably, the length of described changeover portion is 70mm, and the diameter of described changeover portion increases to the lower end of described changeover portion gradually from the upper end of described changeover portion.
Preferably, on the outer peripheral face of the sidewall of described lower tube section, be provided with the lower conical surface coaxial with described lower tube section, the upper base edge of this lower conical surface circumferentially around and be connected on the sidewall of described lower tube section, extend away from the sidewall of described lower tube section the bottom of this lower conical surface.
The utility model also provides a kind of coal breakage mechanism, this coal breakage mechanism comprises coal unloading tube and coal pulverizer, wherein, this coal unloading tube is the coal unloading tube for coal pulverizer described in the utility model, described coal pulverizer comprises taper surface, the upper end open of this taper surface is greater than lower ending opening, and the lower tube section of described coal unloading tube is inserted in the space that described taper surface surrounds.
Preferably, the vertical range between the lower limb of described lower tube section and described taper surface is 100mm-115mm.
Preferably, on the outer peripheral face of the sidewall of described lower tube section, be provided with the lower conical surface coaxial with described lower tube section, the upper base edge of this lower conical surface circumferentially around and be connected on the sidewall of described lower tube section, extend away from the sidewall of described lower tube section the bottom of this lower conical surface, and the vertical range between the bottom of the described lower conical surface and described taper surface is 75mm-79mm.
Pass through technique scheme, the position that is used for the coal unloading tube moisture dewfall of coal pulverizer is positioned at the lower tube section that internal diameter is larger, when coal dust due to coal dust in the dewfall of moisture while being bonded on the inwall of coal unloading tube, can avoid the coal dust of caking that coal unloading tube is stopped up, the impact on coal dust processing of avoiding coal unloading tube obstruction to bring, and avoid often coal unloading tube being carried out to labor cleaning.
Other feature and advantage of the present utility model are described in detail the specific embodiment part subsequently.
Accompanying drawing explanation
Accompanying drawing is to be used to provide further understanding of the present utility model, and forms a part for description, is used from explanation the utility model, but does not form restriction of the present utility model with the specific embodiment one below.In the accompanying drawings:
Fig. 1 is according to the coal breakage mechanism of the utility model preferred embodiment and the schematic diagram of coal unloading tube.
Description of reference numerals
Pipeline section 21 changeover portions on 1
2,2 ' lower tube section 3,3 ' time conical surface
4 taper surfaces
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is elaborated.Should be understood that, the specific embodiment described herein only, for description and interpretation the utility model, is not limited to the utility model.
In the utility model, in the situation that not doing contrary explanation, the noun of locality of use will be described with description conventionally by reference to the accompanying drawings as " upper and lower, left and right ", and the direction in practical application is suitably understood.
The utility model provides a kind of coal unloading tube for coal pulverizer, within the lower limb of this coal unloading tube is suitable for extending to the taper surface 4 of described coal pulverizer and with described taper surface separately, wherein, described coal unloading tube comprises interconnective upper pipeline section 1 and lower tube section 2, and the internal diameter of this lower tube section 2 is greater than the internal diameter of pipeline section 1 on this.
In the utility model, by coal unloading tube, to coal pulverizer pulverized coal conveying, wherein coal pulverizer comprises taper surface 4, and this taper surface surrounds truncated cone, and the opening diameter that this taper surface is generally upper end is greater than the opening diameter of lower end.
As shown in Figure 1, wherein, coal unloading tube comprises interconnective upper pipeline section 1 and lower tube section 2, and the internal diameter of lower tube section 2 is greater than the internal diameter of pipeline section 1.The upper end of the upper pipeline section 1 of coal unloading tube is connected to feeder, and the lower end of lower tube section 2 extends among the taper surface of coal pulverizer.The taper surface of this coal pulverizer is set to surround the shape of truncated cone conventionally, and the upper end open of taper surface 4 is greater than lower ending opening, and the diameter of the circumference that the upper base of taper surface surrounds is greater than the diameter of the circumference that bottom surrounds.Like this, when coal dust falls to coal pulverizer from coal unloading tube, by the design to upper pipeline section 1 and lower tube section 2, thereby make the dewfall region of coal dust in lower tube section 2, when falling, coal dust will in lower tube section 2, lump, because the internal diameter of lower tube section 2 is designed to be greater than the internal diameter of upper pipeline section 1, therefore with respect to the coal unloading tube of prior art, be difficult for occurring in coal unloading tube due to the coal dust obstruction causing of luming.
In Fig. 1, the lower tube section 2 ' of prior art dots.From Fig. 1, can be clear that lower tube section 2 of the present utility model is than the diameter of lower tube section 2 ' of the prior art is larger and length is shorter.
Pass through technique scheme, the position that is used for the coal unloading tube moisture dewfall of coal pulverizer is positioned at the lower tube section that internal diameter is larger, when coal dust due to coal dust in the dewfall of moisture while being bonded on the inwall of coal unloading tube, can avoid the coal dust of caking that coal unloading tube is stopped up, the impact on coal dust processing of avoiding coal unloading tube obstruction to bring, and avoid often coal unloading tube being carried out to labor cleaning.
Preferably, the internal diameter of described upper pipeline section 1 is 610mm-630mm, and the internal diameter of described lower tube section 2 is 710mm-730mm.
Preferably, the length of described lower tube section 2 is 960mm-990mm.
In preferred embodiment of the present utility model, upper pipeline section 1 is 610mm with the internal diameter that the internal diameter of lower tube section 2 is more preferably designed to pipeline section 1, and the internal diameter of lower tube section 2 is 710mm, and the length of lower tube section 2 is preferably 980mm.
According to the coal unloading tube described in the above-mentioned embodiment of the utility model, than coal unloading tube of the prior art, to compare, the total length of coal unloading tube is shorter, and for example common coal unloading tube total length is than the long 77mm of the total length of the coal unloading tube in present embodiment.Being set to according to the preferred value of the overall construction design of coal unloading tube and coal pulverizer of above-mentioned data, those skilled in the art can be set to other parameters according to actual needs, and the utility model is not limited this.
Preferably, between described upper pipeline section 1 and described lower tube section 2, by changeover portion 21, link together, the upper end welding of the lower end of described upper pipeline section 1 and described changeover portion 21, the lower end welding of the upper end of described lower tube section 2 and described changeover portion 21.
More preferably, the length of described changeover portion 21 is 70mm, and the diameter of described changeover portion 21 increases to the lower end of described changeover portion 21 gradually from the upper end of described changeover portion 21.
Because upper pipeline section 1 is different from the diameter of lower tube section 2, be therefore not easy to directly the lower limb of upper pipeline section 1 is connected with the top edge of lower tube section 2.In the present embodiment, need to upper pipeline section 1 and lower tube section 2 be linked together by connecting ring.
And this changeover portion 21 is preferably diameter and evenly increases to lower end from its upper end, in embodiment as shown in Figure 1, the tube wall of this changeover portion is the frusto-conical face that tilts to extend.
Preferably, on the outer peripheral face of the sidewall of described lower tube section 2, be provided with the lower conical surface 3 coaxial with described lower tube section 2, the upper base edge of this lower conical surface 3 circumferentially around and be connected on the sidewall of described lower tube section 2, extend away from the sidewall of described lower tube section 2 bottom of this lower conical surface 3.
In this preferred embodiment, the radius of the circumference that the upper base of the lower conical surface 3 surrounds is less than the radius of the circumference that bottom surrounds, and the upper base of the lower conical surface 3 is connected to the outer peripheral face of the sidewall of lower tube section 2, and the lower conical surface 3 is coaxial with lower tube section 2.
It should be noted that, be connected to the lower conical surface 3 on the outer peripheral face of lower tube section 2 of coal unloading tube and coal pulverizer taper surface 4 arrange contrary, the lower conical surface 3 is arranged in the space that taper surface 4 surrounds, and the lower tube section 2 of coal unloading tube and the lower conical surface 3 do not contact with taper surface 4.
Visible in Fig. 1, the lower conical surface 3 ' of the prior art dots.From Fig. 1, can be clear that, the lower conical surface 3 of the present utility model is connected on the outer surface of lower tube section 2 of the present utility model.
The utility model also provides a kind of coal breakage mechanism, this coal breakage mechanism comprises coal unloading tube and coal pulverizer, wherein, this coal unloading tube is according to the coal unloading tube for coal pulverizer described in the utility model, described coal pulverizer comprises taper surface 4, the upper end open of this taper surface 4 is greater than lower ending opening, and the lower tube section 2 of described coal unloading tube is inserted in the space that described taper surface 4 surrounds.
According to coal breakage of the present utility model mechanism, this coal breakage mechanism comprises coal pulverizer and the coal unloading tube for coal pulverizer, and this coal unloading tube is for to coal pulverizer pulverized coal conveying.This coal unloading tube is connected with feeder conventionally, the lower tube section 2 of coal unloading tube is inserted in the taper surface 4 of coal pulverizer, the upper end open of this taper surface 4 is greater than lower ending opening, be the diameter that the diameter of the circumference that surrounds of the upper base of taper surface 4 is greater than the circumference that the bottom of taper surface 4 surrounds, with form a coal pulverizer for receiving the acceptance division from the coal dust of coal unloading tube.The lower tube section 2 of coal unloading tube is inserted in the space that taper surface 4 surrounds.
Preferably, the vertical range between the lower limb of described lower tube section 2 and described taper surface 4 is 100mm-115mm.
In preferred embodiment of the present utility model, more preferably, the lower limb of coal unloading tube, the vertical range between lower limb and the taper surface 4 of the lower tube section 2 of coal unloading tube is 114mm.Being set to according to the preferred value of the overall construction design of coal unloading tube and coal pulverizer of above-mentioned data, those skilled in the art can be set to other parameters according to actual needs, and the utility model is not limited this.
Preferably, on the outer peripheral face of the sidewall of described lower tube section 2, be provided with the lower conical surface 3 coaxial with described lower tube section 2, the upper base edge of this lower conical surface 3 circumferentially around and be connected on the sidewall of described lower tube section 2, extend away from the sidewall of described lower tube section 2 bottom of this lower conical surface 3, and the vertical range between the bottom of the described lower conical surface 3 and described taper surface 4 is 75mm-79mm.
In this preferred embodiment, the radius of the circumference that the upper base of the lower conical surface 3 surrounds is less than the radius of the circumference that bottom surrounds, and the upper base of the lower conical surface 3 is connected to the outer peripheral face of the sidewall of lower tube section 2, and the lower conical surface 3 is coaxial with lower tube section 2.
It should be noted that, be connected to the lower conical surface 3 on the outer peripheral face of lower tube section 2 of coal unloading tube and coal pulverizer taper surface 4 arrange contrary, the lower conical surface 3 is arranged in the space that taper surface 4 surrounds, and the lower tube section 2 of coal unloading tube and the lower conical surface 3 do not contact with taper surface 4.
And the vertical range between the bottom of the lower conical surface 3 and taper surface 4 is more preferably 76mm.Being set to according to the preferred value of the overall construction design of coal unloading tube and coal pulverizer of above-mentioned data, those skilled in the art can be set to other parameters according to actual needs, and the utility model is not limited this.
As can be seen from Figure 1, vertical range between lower limb and the taper surface of lower tube section 2 of the present utility model equates with the vertical range between the lower limb of the lower tube section 2 ' of prior art and taper surface 4, and the vertical range between bottom and the taper surface 4 of the vertical range between the bottom of the lower conical surface 3 of the present utility model and taper surface 4 and the lower conical surface 3 of prior art equates.As can be seen here, the diameter of lower tube section 2 of the present utility model and length can be adjusted according to actual needs, but preferably keep the vertical range between the lower limb of lower tube section 2 and the bottom of the lower conical surface and taper surface 4.Or those skilled in the art can adjust the vertical range between the lower limb of above-mentioned lower tube section 2 and the bottom of the lower conical surface and taper surface 4 according to actual needs, the utility model is not limited this.
Below describe by reference to the accompanying drawings preferred embodiment of the present utility model in detail; but; the utility model is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
It should be noted that in addition, each concrete technical characterictic described in the above-mentioned specific embodiment, in reconcilable situation, can combine by any suitable mode, for fear of unnecessary repetition, the utility model is to the explanation no longer separately of various possible combinations.
In addition, between various embodiment of the present utility model, also can be combined, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (9)
1. the coal unloading tube for coal pulverizer, within the lower limb of this coal unloading tube is suitable for extending to the taper surface (4) of described coal pulverizer and with described taper surface separately, it is characterized in that, described coal unloading tube comprises interconnective upper pipeline section (1) and lower tube section (2), and the internal diameter of this lower tube section (2) is greater than the internal diameter of pipeline section on this (1).
2. coal unloading tube according to claim 1, is characterized in that, the internal diameter of described upper pipeline section (1) is 610mm-630mm, and the internal diameter of described lower tube section (2) is 710mm-730mm.
3. coal unloading tube according to claim 2, is characterized in that, the length of described lower tube section (2) is 960mm-990mm.
4. coal unloading tube according to claim 1, it is characterized in that, between described upper pipeline section (1) and described lower tube section (2), by changeover portion (21), link together, the upper end welding of the lower end of described upper pipeline section (1) and described changeover portion (21), the lower end welding of the upper end of described lower tube section (2) and described changeover portion (21).
5. coal unloading tube according to claim 4, is characterized in that, the length of described changeover portion (21) is 70mm, and the diameter of described changeover portion (21) increases to the lower end of described changeover portion (21) gradually from the upper end of described changeover portion (21).
6. according to the coal unloading tube described in any one in claim 1-5, it is characterized in that, on the outer peripheral face of the sidewall of described lower tube section (2), be provided with the lower conical surface (3) coaxial with described lower tube section (2), the upper base edge of this lower conical surface (3) circumferentially around and be connected on the sidewall of described lower tube section (2), extend away from the sidewall of described lower tube section (2) bottom of this lower conical surface (3).
7. a coal breakage mechanism, this coal breakage mechanism comprises coal unloading tube and coal pulverizer, it is characterized in that, this coal unloading tube is according to the coal unloading tube for coal pulverizer described in any one in claim 1-3, described coal pulverizer comprises taper surface (4), the upper end open of this taper surface (4) is greater than lower ending opening, and the lower tube section (2) of described coal unloading tube is inserted in the space that described taper surface (4) surrounds.
8. coal breakage according to claim 7 mechanism, is characterized in that, the vertical range between the lower limb of described lower tube section (2) and described taper surface (4) is 100mm-115mm.
9. coal breakage according to claim 7 mechanism, it is characterized in that, on the outer peripheral face of the sidewall of described lower tube section (2), be provided with the lower conical surface (3) coaxial with described lower tube section (2), the upper base edge of this lower conical surface (3) circumferentially around and be connected on the sidewall of described lower tube section (2), extend away from the sidewall of described lower tube section (2) bottom of this lower conical surface (3), and the vertical range between the bottom of the described lower conical surface (3) and described taper surface (4) is 75mm-79mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320766345.9U CN203577967U (en) | 2013-11-28 | 2013-11-28 | Coal dropping pipe and coal dropping mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320766345.9U CN203577967U (en) | 2013-11-28 | 2013-11-28 | Coal dropping pipe and coal dropping mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203577967U true CN203577967U (en) | 2014-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320766345.9U Expired - Lifetime CN203577967U (en) | 2013-11-28 | 2013-11-28 | Coal dropping pipe and coal dropping mechanism |
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| Country | Link |
|---|---|
| CN (1) | CN203577967U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110745582A (en) * | 2019-10-28 | 2020-02-04 | 章丘华明水泥有限公司 | Blanking device is separated to gate crushed aggregates formula |
-
2013
- 2013-11-28 CN CN201320766345.9U patent/CN203577967U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110745582A (en) * | 2019-10-28 | 2020-02-04 | 章丘华明水泥有限公司 | Blanking device is separated to gate crushed aggregates formula |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140507 |
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| CX01 | Expiry of patent term |