CN212775663U - Shrinkage cavity driving medium that boiler coal pulverizer export is adjustable - Google Patents
Shrinkage cavity driving medium that boiler coal pulverizer export is adjustable Download PDFInfo
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- CN212775663U CN212775663U CN202020602322.4U CN202020602322U CN212775663U CN 212775663 U CN212775663 U CN 212775663U CN 202020602322 U CN202020602322 U CN 202020602322U CN 212775663 U CN212775663 U CN 212775663U
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Abstract
The utility model relates to a coal pulverizer technical field specifically is an adjustable shrinkage cavity driving medium of boiler coal pulverizer export, the power distribution box comprises a box body, the inside of box is equipped with the shrinkage cavity, the inside of box still is equipped with a set of run-on flashboard, the lower extreme of run-on flashboard articulates the inside bottom of box, and two sets of the upper end of run-on flashboard is connected with two sets of connecting pieces, and two sets of the connecting piece runs through the relative both sides wall of box respectively, and two sets of the connecting piece are connected with the transmission lead screw, the transmission lead screw sets up in the upper end of box, through set up the transmission lead screw in the upper end of box, can avoid buggy to block up lead screw; and the two sides of the hinged part of the split plate valve and the box body are provided with dust blowing holes, so that pulverized coal attached to the pin shaft can be blown off conveniently, and oil can be applied to and maintained by the pin shaft conveniently.
Description
Technical Field
The utility model relates to a coal pulverizer technical field specifically is an adjustable shrinkage cavity driving medium of boiler coal pulverizer export.
Background
The coal grinding process is a process in which coal is crushed and its surface area is increased continuously. To increase the new surface area, the binding force between solid molecules must be overcome, and thus energy is consumed. The coal is ground into coal powder in a coal mill mainly by three modes of crushing, smashing and grinding. Wherein the energy consumed by the crushing process is the least. The grinding process is most energy intensive. The two or three modes of the various coal mills are combined in the pulverizing process, but the main mode is determined by the type of the coal mill.
The types of coal mills are many and can be classified into three types, i.e., low-speed coal mills, medium-speed coal mills, and high-speed coal mills, depending on the rotational speed of the coal grinding operation member.
The adjustable shrinkage cavity is an adjusting valve arranged on the powder feeding pipeline and can adjust the flow rate of the air-powder mixture and the pressure head. The primary air resistance is mainly used for adjusting the primary air resistance on the powder feeding pipeline of the power station, so that the primary air speed of the powder feeding pipeline at the inlet of the combustor is kept the same.
Most of the existing adjustable shrinkage cavities are provided with screw rods in a box body, after the adjustable shrinkage cavities are used for a long time, pulverized coal in a pipeline easily enters the box body through a gap between the shrinkage cavities and a flashboard, and part of pulverized coal is attached to threads and nut seats of the screw rods. The coal dust attached to the screw threads and the nut seats accumulates with time, so that the transmission part is blocked, and the flashboard is opened and closed with difficulty. And because the lead screw sets up inside the box, need open the box when clearing up the lead screw, the operation is inconvenient.
Disclosure of Invention
An object of the utility model is to provide an adjustable shrinkage cavity driving medium in boiler coal pulverizer export to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an adjustable shrinkage cavity driving medium in boiler coal pulverizer export, includes the box, the inside of box is equipped with the shrinkage cavity, the inside of box still is equipped with a set of to open flashboard, the lower extreme that opens the flashboard articulates in the inside bottom of box, and is two sets of the upper end that opens the flashboard is connected with two sets of connecting pieces, and is two sets of the connecting piece runs through respectively in the relative both sides wall of box, and is two sets of the connecting piece is connected with the transmission lead screw, the transmission lead screw sets up the upper end at the box.
Preferably, the split gate comprises a left gate plate and a right gate plate, the left gate plate and the right gate plate are respectively arranged on two sides of the shrinkage cavity, the lower ends of the left gate plate and the right gate plate are hinged to the bottom end of the box body through pin shafts, the upper end of the left gate plate and the upper end of the right gate plate are fixedly connected with connecting plates, and the upper end of the connecting plates is fixedly connected with a sliding pin.
Preferably, the connecting piece includes slide bar and slide opening board, slide bar sliding connection is at the lateral wall of box, the one end fixedly connected with nut seat of slide bar, the other end and the slide opening board fixed connection of slide bar, the slide opening has been seted up on the surface of slide opening board, sliding pin sliding connection is in the slide opening.
Preferably, the junction fixedly connected with slip bracket of box lateral wall and slide bar, slide bar sliding connection is in the slip bracket.
Preferably, the middle part of transmission lead screw is equipped with two sets of bearing bracket, two sets of bearing bracket fixed connection is in the upper end of box, two sets of nut seat threaded connection is in the both sides of transmission lead screw.
Preferably, one end of the transmission screw rod is fixedly connected with a rocking handle.
Preferably, the transmission screw rod is a bidirectional screw rod.
Preferably, the box body is provided with a rectangular protruding part at the hinged position of the lower ends of the split gate plates, and dust blowing holes are formed in the surfaces of the two side walls of the protruding part.
Preferably, the inner part of the soot blowing hole is provided with internal threads, and the soot blowing hole is in threaded connection with a hole plug.
Preferably, the two sides of the shrinkage cavity are both connected with flange plates.
Compared with the prior art, the beneficial effects of the utility model are that:
1) the shrinkage cavity transmission part with the adjustable outlet of the boiler coal mill can adjust resistance to an outlet air pipe of the coal mill by arranging the split gate plates, so that the air speed of each powder feeding pipeline at the outlet of the coal mill is kept the same. The bidirectional screw rod is driven by the rotary torque on the rocking handle, the flashboard in the box body rotates in the shrinkage cavity by taking the pin roll as a round point, and the left flashboard and the right flashboard are driven to reversely operate, so that the purpose of adjusting the flow cross section of the pipeline is achieved.
2) According to the adjustable shrinkage cavity transmission piece at the outlet of the boiler coal mill, the transmission screw rod is arranged at the upper end of the box body, so that the situation that coal powder blocks screw threads and a nut seat after entering the box body can be avoided; and the two sides of the hinged part of the split plate valve and the box body are provided with dust blowing holes, so that pulverized coal attached to the pin shaft can be blown off conveniently, and oil can be applied to and maintained by the pin shaft conveniently.
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 introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of the present invention when the hole diameter of the shrinkage cavity is the largest;
fig. 2 is a schematic structural view of the present invention when the hole diameter of the shrinkage cavity is minimum;
fig. 3 is a front view of the present invention;
in the drawings, the components represented by the respective reference numerals are listed below:
the device comprises a box body 1, a shrinkage hole 2, a transmission screw rod 3, a left flashboard 4, a right flashboard 5, a connecting plate 6, a pin shaft 7, a slide rod 8, a slide hole board 9, a nut seat 10, a slide hole 11, a slide bracket 12, a bearing bracket 13, a rocking handle 14, a bulge part 15, a dust blowing hole 16, a hole plug 17 and a flange plate 18.
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 embodiments 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 to 3, the present invention provides a technical solution: the utility model provides an adjustable shrinkage cavity driving medium in boiler coal pulverizer export, includes box 1, and the inside of box 1 is equipped with shrinkage cavity 2, and the inside of box 1 still is equipped with a set of run-to-run flashboard, and the lower extreme of run-to-run flashboard articulates in the inside bottom of box 1, and the upper end of two sets of run-to-run flashboards is connected with two sets of connecting pieces, and two sets of connecting pieces run through respectively in the relative both sides wall of box 1, and two sets of connecting pieces are connected with drive screw 3, and drive screw 3 sets.
Wherein, to open flashboard including left flashboard 4 and right flashboard 5, left flashboard 4 and right flashboard 5 set up respectively in the both sides of shrinkage cavity 2, the lower extreme of left flashboard 4 and right flashboard 5 articulates in the inside bottom of box 1 through the round pin axle, the upper end fixedly connected with connecting plate 6 of left flashboard 4 and right flashboard 5, the upper end fixedly connected with sliding pin 7 of connecting plate 6, through setting up to open flashboard, can be to the export tuber pipe regulation resistance of coal pulverizer, make the wind speed of each powder feeding pipeline in the coal pulverizer exit keep the same. The bidirectional screw rod is driven by the rotation torque on the rocking handle 14, the flashboard in the box body rotates in the shrinkage cavity 2 by taking the pin shaft as a round point, and the left flashboard 4 and the right flashboard 5 are driven to reversely operate, so that the purpose of adjusting the flow cross section of the pipeline is achieved.
The connecting piece comprises a slide rod 8 and a slide hole plate 9, the slide rod 8 is connected to the side wall of the box body 1 in a sliding mode, a nut seat 10 is fixedly connected to one end of the slide rod 8, the other end of the slide rod 8 is fixedly connected with the slide hole plate 9, a slide hole 11 is formed in the surface of the slide hole plate 9, and a slide pin 7 is connected to the slide hole 11 in a sliding mode.
Wherein, the junction fixedly connected with slip bracket 12 of box 1 lateral wall and slide bar 8, slide bar 8 sliding connection is in slip bracket 12.
Wherein, the middle part of transmission lead screw 3 is equipped with two sets of bearing bracket 13, two sets of bearing bracket 13 fixed connection are in the upper end of box 1, two sets of nut seat 10 threaded connection are in the both sides of transmission lead screw 3, the one end fixedly connected with rocking handle 14 of transmission lead screw 3, transmission lead screw 3 is two-way lead screw, through set up transmission lead screw 3 in the upper end of box 1, can avoid buggy to block up transmission lead screw 3 screw and nut seat 10 after getting into box 1.
Wherein, a rectangular bulge part 15 is arranged at the hinged position of the box body 1 and the lower end of the split gate plate, and dust blowing holes 16 are arranged on the surfaces of two side walls of the bulge part 15; the inside of blowing hole 16 is equipped with the internal thread, and blowing hole 16 threaded connection has plug 17, and the articulated department both sides of split plate valve and box 1 are equipped with blowing hole 16, are convenient for blow off the buggy that is attached to on the round pin axle, also are convenient for to the maintenance of oiling of round pin axle.
Wherein, the two sides of the shrinkage cavity 2 are both connected with flange plates 18.
Principle of operation
When the adjustable shrinkage cavity transmission medium at the outlet of the boiler coal mill is used, the rocking handle 14 is rotated, the transmission screw rod 3 is driven through the rotating torque on the rocking handle 14, the transmission screw rod 3 drives the split gate plates through the nut seats 10 and the connecting pieces on the two sides, the gate plates in the box body 1 rotate at the shrinkage cavity 2 by taking the pin shafts as round points, and the left gate plate 4 and the right gate plate 5 are driven to reversely operate so as to achieve the purpose of adjusting the flow cross section area of a pipeline.
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.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.
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 (10)
1. The utility model provides an adjustable shrinkage cavity driving medium in boiler coal pulverizer export, includes box (1), the inside of box (1) is equipped with shrinkage cavity (2), its characterized in that, the inside of box (1) still is equipped with a set of to open flashboard, the lower extreme of to open flashboard articulates in the inside bottom of box (1), and is two sets of the upper end of to open flashboard is connected with two sets of connecting pieces, and is two sets of the connecting piece runs through respectively in the relative both sides wall of box (1), and is two sets of the connecting piece is connected with drive screw (3), drive screw (3) set up the upper end at box (1).
2. The adjustable shrinkage cavity transmission part for the outlet of the boiler coal mill according to claim 1, wherein the split gate comprises a left gate plate (4) and a right gate plate (5), the left gate plate (4) and the right gate plate (5) are respectively arranged at two sides of the shrinkage cavity (2), the lower ends of the left gate plate (4) and the right gate plate (5) are hinged at the inner bottom end of the box body (1) through pin shafts, the upper ends of the left gate plate (4) and the right gate plate (5) are fixedly connected with a connecting plate (6), and the upper end of the connecting plate (6) is fixedly connected with a sliding pin (7).
3. The driving member for the adjustable shrinkage cavity of the outlet of the boiler coal mill according to claim 2, wherein the connecting member comprises a sliding rod (8) and a sliding hole plate (9), the sliding rod (8) is slidably connected to the side wall of the box body (1), one end of the sliding rod (8) is fixedly connected with a nut seat (10), the other end of the sliding rod (8) is fixedly connected with the sliding hole plate (9), a sliding hole (11) is formed in the surface of the sliding hole plate (9), and the sliding pin (7) is slidably connected to the sliding hole (11).
4. The adjustable shrinkage cavity transmission piece for the outlet of the boiler mill according to claim 3, wherein a sliding bracket (12) is fixedly connected to the joint of the side wall of the box body (1) and the sliding rod (8), and the sliding rod (8) is slidably connected in the sliding bracket (12).
5. The adjustable shrinkage cavity driving member for the outlet of the boiler coal mill according to claim 3, wherein two sets of bearing brackets (13) are arranged in the middle of the driving screw (3), the two sets of bearing brackets (13) are fixedly connected to the upper end of the box body (1), and the two sets of nut seats (10) are screwed on two sides of the driving screw (3).
6. The adjustable shrinkage cavity transmission member for the outlet of the boiler coal mill according to claim 1, wherein a rocking handle (14) is fixedly connected to one end of the transmission screw rod (3).
7. The adjustable shrinkage cavity transmission piece for the outlet of the boiler coal mill according to the claim 1, 5 or 6, wherein the transmission screw rod (3) is a bidirectional screw rod.
8. The adjustable shrinkage cavity transmission member for the outlet of the boiler coal mill according to claim 1, wherein the box body (1) is provided with a rectangular protrusion (15) at the hinge joint with the lower end of the split gate plate, and the surfaces of two side walls of the protrusion (15) are provided with ash blowing holes (16).
9. The adjustable shrinkage cavity transmission member for the outlet of the boiler coal mill according to claim 8, wherein the inner portion of the soot blowing hole (16) is provided with an internal thread, and the soot blowing hole (16) is connected with a hole plug (17) in a threaded manner.
10. A driving member for an adjustable shrinkage cavity of an outlet of a boiler coal mill according to claim 1, characterized in that flanges (18) are connected to both sides of the shrinkage cavity (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020602322.4U CN212775663U (en) | 2020-04-21 | 2020-04-21 | Shrinkage cavity driving medium that boiler coal pulverizer export is adjustable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020602322.4U CN212775663U (en) | 2020-04-21 | 2020-04-21 | Shrinkage cavity driving medium that boiler coal pulverizer export is adjustable |
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| Publication Number | Publication Date |
|---|---|
| CN212775663U true CN212775663U (en) | 2021-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020602322.4U Expired - Fee Related CN212775663U (en) | 2020-04-21 | 2020-04-21 | Shrinkage cavity driving medium that boiler coal pulverizer export is adjustable |
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| Country | Link |
|---|---|
| CN (1) | CN212775663U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114261775A (en) * | 2021-11-26 | 2022-04-01 | 华能洛阳热电有限责任公司 | Bidirectional adjustable shrinkage cavity device for coal-fired unit |
-
2020
- 2020-04-21 CN CN202020602322.4U patent/CN212775663U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114261775A (en) * | 2021-11-26 | 2022-04-01 | 华能洛阳热电有限责任公司 | Bidirectional adjustable shrinkage cavity device for coal-fired unit |
| CN114261775B (en) * | 2021-11-26 | 2023-12-15 | 华能洛阳热电有限责任公司 | Bidirectional adjustable shrinkage cavity device for coal-fired unit |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210323 |
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| CF01 | Termination of patent right due to non-payment of annual fee |