CN220258654U - Boiler bottom ash screen device - Google Patents
Boiler bottom ash screen device Download PDFInfo
- Publication number
- CN220258654U CN220258654U CN202320886369.1U CN202320886369U CN220258654U CN 220258654 U CN220258654 U CN 220258654U CN 202320886369 U CN202320886369 U CN 202320886369U CN 220258654 U CN220258654 U CN 220258654U
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- screening
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- 239000010882 bottom ash Substances 0.000 title claims abstract description 31
- 238000012216 screening Methods 0.000 claims abstract description 99
- 239000000428 dust Substances 0.000 claims abstract description 56
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 238000010521 absorption reaction Methods 0.000 claims abstract description 14
- 239000002956 ash Substances 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 6
- 239000000463 material Substances 0.000 description 11
- 238000007599 discharging Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 239000003245 coal Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002452 interceptive effect Effects 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
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000003813 thumb Anatomy 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
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- Combined Means For Separation Of Solids (AREA)
Abstract
The utility model discloses a boiler bottom ash screen device, which comprises a base, wherein a first screening box is arranged at the top of the base, an oscillating assembly is arranged between the first screening box and the base, a second screening box is arranged at the top of the first screening box, and a box cover is arranged at the top of the second screening box; the bottom end of the inner wall of the second screening box is provided with an annular rail, a conical screen is rotationally connected to the annular rail, a discharge hole is formed in the side walls of the second screening box and the first screening box, the discharge hole is connected with a discharge pipe, a collecting box is arranged on the base, and the discharge pipe extends to the inside of the collecting box; the top of base is provided with dust absorption mechanism, and dust absorption mechanism includes the dust catcher, and first dust absorption hose is installed to the output of dust catcher, and first dust absorption hose is connected to the lateral wall of first branch sieve case and second branch sieve case. The utility model is convenient to screen the bottom ash of the boiler step by step, convenient and quick to assemble and disassemble, convenient to clean and capable of avoiding flying dust generated in the screening process of the bottom ash from floating outside the equipment and being inhaled by staff.
Description
Technical Field
The utility model relates to the technical field of boilers, in particular to a boiler bottom ash screen device.
Background
When the boiler burns, a large amount of coal is used, a large amount of ash is generated after the coal is burnt, if the ash is not cleaned timely, the ash is accumulated, so that the normal use of the boiler is affected, and substances which can be continuously used possibly exist in the ash generated after the coal is burnt, so that a screening device is needed.
The Chinese patent with the publication number of CN211515126U discloses a boiler bottom ash screening device, through being provided with screening subassembly and realizing the multilayer screening to the inside available impurity of ash is gone out to effective screening, can utilize the second driving motor to rotate and drive the screening roller and rotate during the use, the inside stirring leaf of screening roller stirs the screening to the ash this moment, the granule ash enters into on the screening board through the hole in the screening process, the screening board vibrates the screening again under vibrating motor's vibration, the ash that will sieve out finally transports through the conveyer belt and leaves.
However, the above disclosed solution has the following disadvantages: when the screening plate performs vibration screening on the furnace dust again under the vibration of the vibration motor, a large amount of furnace dust can fly out from gaps between the screening plate and the conveyor belt, so that serious pollution can be caused to the periphery of equipment, and once the furnace dust is inhaled by nearby staff, certain harm can be brought.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provide the boiler bottom ash screen device with reasonable structural design.
The utility model solves the problems by adopting the following technical scheme: the ash screen device at the bottom of the boiler is characterized by comprising a base, wherein a first screening box is arranged at the top of the base, an oscillating assembly is arranged between the first screening box and the base, a second screening box is arranged at the top of the first screening box, and a box cover is arranged at the top of the second screening box;
the bottom end of the inner wall of the second screening box is provided with an annular rail, the annular rail is rotationally connected with a conical screen, the edge of the bottom end of the conical screen is provided with a discharge hole, the side wall of the second screening box and the side wall of the first screening box are provided with discharge holes, the outer side of each discharge hole is provided with a discharge pipe, the base is provided with a collecting box, the discharge pipe extends to the inside of the collecting box, and an electric valve is arranged at the joint of the discharge pipe and the discharge hole;
the top of base still is provided with dust absorption mechanism, and dust absorption mechanism includes the dust catcher, and first dust absorption hose is installed to the output of dust catcher, and first dust absorption hose is connected to the lateral wall of first branch sieve case and second branch sieve case.
Further, the oscillating assembly is composed of an oscillator and a plurality of groups of springs and is used for vibrating the first screening box.
Further, the second screening boxes are provided with two groups, the two groups of second screening boxes are stacked from top to bottom, and the filtering holes of the conical screen in the upper end second screening box are larger than those of the conical screen in the lower end second screening box.
Further, the side walls of the first sub-screen box and the second sub-screen box are respectively provided with an installation seat, and the first sub-screen box and the second sub-screen box are detachably connected through the installation seats and the fastening bolts.
Further, the discharge pipe and the collecting box are provided with three groups.
Further, the dust collection mechanism further comprises a second dust collection hose, and the second dust collection hose is connected with the position, close to the collection box, on the material discharging pipe.
Further, still include assist mechanism, assist mechanism includes the motor, the motor is installed in the below of first branch sieve case, the output transmission of motor is connected with the pivot, the pivot rotates the bottom of connecting at first branch sieve case, the connecting seat is installed on the top of pivot, peg graft on the connecting seat has the transfer line, the transfer line sets up the middle part at the conical screen, another group of connecting seat is installed on the top of transfer line, install the stirring brush on the lateral wall of connecting seat, the bottom of stirring brush contacts with the top of conical screen or the bottom of first branch sieve case.
Compared with the prior art, the utility model has the following advantages and effects: the utility model is convenient to screen the bottom ash of the boiler step by step, convenient and quick to assemble and disassemble, convenient to clean, and higher in safety, and reduces risk by avoiding flying dust generated in the screening process of the bottom ash to the outside of equipment and being inhaled by staff.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a front view showing the internal structures of the first and second screening boxes of the present utility model;
FIG. 3 is a side view showing the internal structure of the first and second screening boxes of the present utility model;
fig. 4 is a schematic view of the structure of the conical screen of the present utility model.
In the figure: base 1, first branch sieve case 2, second branch sieve case 201, motor 202, pivot 203, oscillating subassembly 3, annular rail 4, conical screen 401, transfer line 402, connecting seat 403, thumb brush 404, case lid 5, dust catcher 6, first dust absorption hose 601, second dust absorption hose 602, discharge pipe 7, electric valve 701, collection box 702.
Detailed Description
The present utility model will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present utility model and not limited to the following examples.
Example 1.
As shown in fig. 1 and 2, the utility model provides a boiler bottom ash screen device, which comprises a base 1, wherein a first screening box 2 is arranged at the top end of the base 1, an oscillating assembly 3 is arranged between the bottom end of the first screening box 2 and the base 1, a second screening box 201 is arranged at the top end of the first screening box 2, and a box cover 5 is arranged at the top end of the second screening box 201;
further, the oscillating assembly 3 is composed of an oscillator and a plurality of groups of springs and is used for vibrating the first sub-screening box 2, the oscillating assembly 3 is in the prior art, and boiler bottom ash in the first sub-screening box 2 and the second sub-screening box 201 can be subjected to vibration screening during starting;
as shown in fig. 1 to 4, an annular rail 4 is arranged at the bottom end of the inner wall of the second screening box 201, a conical screen 401 is rotatably connected to the annular rail 4, discharge holes are formed in the edge of the bottom end of the conical screen 401 and positioned on the side wall of the second screening box 201 and the side wall of the first screening box 2, a discharge pipe 7 is arranged outside the discharge holes, a collecting box 702 is arranged on the base 1, the other end of the discharge pipe 7 extends into the collecting box 702, and an electric valve 701 is arranged at the joint of the discharge pipe 7 and the discharge hole;
the conical screen 401 is in a structure with a high middle part and a low edge, so that particles are conveniently discharged from a discharge hole when the bottom ash of the boiler is subjected to vibration screening;
further, the second screening boxes 201 are provided with two groups, the two groups of second screening boxes 201 are overlapped from top to bottom, and the filtering holes of the conical screen 401 in the upper end second screening box 201 are larger than those of the conical screen 401 in the lower end second screening box 201, so that the boiler bottom ash can be conveniently screened step by step;
further, the side walls of the first sub-screen box 2 and the second sub-screen box 201 are provided with mounting seats, and the first sub-screen box 2 and the second sub-screen box 201 are detachably connected through the mounting seats and fastening bolts, so that the first sub-screen box 2 and the second sub-screen box 201 are convenient to disassemble for internal cleaning;
further, three groups of material discharging pipes 7 and three groups of material collecting boxes 702 are respectively arranged, material receiving boxes are connected in the material collecting boxes 702 in a sliding manner, the material receiving boxes are matched with the output ends of the material discharging pipes 7, and after boiler bottom ash is screened step by step, the boiler bottom ash enters the material collecting boxes 702 along the corresponding material discharging pipes 7 and is received by the material receiving boxes;
as shown in fig. 1 to 3, a dust collection mechanism is further arranged on the other side of the top end of the base 1, the dust collection mechanism comprises a dust collector 6, the dust collector 6 is arranged on the top end of the base 1, a first dust collection hose 601 is arranged at the output end of the dust collector 6, and the other end of the first dust collection hose 601 is connected with the side walls of the first screening box 2 and the second screening box 201;
further, the dust collection mechanism further comprises a second dust collection hose 602, the other end of the second dust collection hose 602 is connected with a position, close to the collection box 702, on the discharge pipe 7, of the screened boiler bottom ash, dust can be generated in the process of entering the collection box 702 through the discharge pipe 7, the dust can be sucked through the second dust collection hose 602 in the dust collection mechanism, and dust suction or pollution caused by the fact that a worker opens a box door of the collection box 702 to take materials is avoided;
in this embodiment, the boiler bottom ash is put into the second screening box 201 from the feed inlet at the top end of the box cover 5, the oscillating assembly 3 is started to drive the first screening box 2 to vibrate, after the bottom ash passes through the screening of the two groups of conical screens 401, the bottom ash with larger particles stays in the upper second screening box 201, the bottom ash with smaller particles stays in the lower second screening box 201, the bottom ash with the smallest particles stays in the first screening box 2, after screening is finished, the valve port of the electric valve 701 is opened, the bottom ash in vibration enters the discharge pipe 7 along the discharge hole and finally falls into the collecting box 702 to be collected, in the vibration process, the dust collector 6 is started, the two groups of second screening boxes 201 and the dust in the first screening box 2 are quickly sucked and removed through the first dust collection hose 601, and when the bottom ash enters the collecting box 702 along the discharge pipe 7, the dust can be sucked and removed through the second dust collection hose 602, so as to avoid pollution caused by floating the dust outside.
Example 2.
As shown in fig. 2 to 4, in this embodiment, compared with embodiment 1, the device further comprises an auxiliary mechanism, the auxiliary mechanism comprises a motor 202, the motor 202 is installed below the first screening box 2, an output end of the motor 202 is in transmission connection with a rotating shaft 203, the rotating shaft 203 is in rotation connection with a bottom end of the first screening box 2, a connecting seat 403 is installed at a top end of the rotating shaft 203, a transmission rod 402 is inserted into the connecting seat 403, the transmission rod 402 is arranged in a middle part of the conical screen 401, another group of connecting seats 403 are installed at a top end of the transmission rod 402, a stirring brush 404 is installed on a side wall of the connecting seat 403, and a bottom end of the stirring brush 404 is in contact with a top of the conical screen 401 or a bottom of the first screening box 2.
In this embodiment, the motor 202 is started to drive the rotating shaft 203 and the driving rod 402 to rotate, so that the corresponding stirring brush 404 rotates along the conical screen 401 or the first screening box 2, which can avoid the conical screen 401 from blocking and interfering with screening, and simultaneously can accelerate the bottom ash to be discharged from the discharge port when the screening is completed.
Working principle: the first screening box 2 and the second screening box 201 and the box cover 5 are arranged so as to facilitate disassembly, assembly and cleaning; the oscillating assembly 3 can drive the first screening box 2, the second screening box 201 and the conical screen 401 to vibrate so as to screen the bottom ash step by step, thereby improving screening efficiency; the dust collection mechanism can quickly suck up dust in the vibration or discharge process, so that the dust is prevented from being sucked by workers, and the safety is improved; the screening efficiency is convenient to be improved through the auxiliary mechanism.
What is not described in detail in this specification is all that is known to those skilled in the art.
Furthermore, the foregoing description of the utility model is provided by way of example only. All equivalent changes in construction, features and principles of the utility model according to the inventive concept are intended to be encompassed by the scope of the utility model. Those skilled in the art may make various modifications, additions and substitutions to the described embodiments without departing from the scope of the utility model as defined in the accompanying claims.
Claims (7)
1. The ash screening device for the boiler bottom is characterized by comprising a base (1), wherein a first screening box (2) is arranged at the top of the base (1), an oscillating assembly (3) is arranged between the first screening box (2) and the base (1), a second screening box (201) is arranged at the top of the first screening box (2), and a box cover (5) is arranged at the top of the second screening box (201);
the bottom end of the inner wall of the second screening box (201) is provided with an annular rail (4), a conical screen (401) is rotationally connected to the annular rail (4), a discharge hole is formed in the edge of the bottom end of the conical screen (401) and located on the side wall of the second screening box (201) and the side wall of the first screening box (2), a discharge pipe (7) is arranged on the outer side of the discharge hole, a collecting box (702) is arranged on the base (1), the discharge pipe (7) extends to the inside of the collecting box (702), and an electric valve (701) is arranged at the joint of the discharge pipe (7) and the discharge hole;
the top of base (1) still is provided with dust absorption mechanism, and dust absorption mechanism includes dust catcher (6), and first dust absorption hose (601) is installed to the output of dust catcher (6), and first dust absorption hose (601) are connected to the lateral wall of first branch sieve case (2) and second branch sieve case (201).
2. The boiler bottom ash screen assembly according to claim 1, characterized in that the oscillating assembly (3) is constituted by an oscillator and several sets of springs for vibrating the first screening box (2).
3. The boiler bottom ash screen arrangement according to claim 1, characterized in that the second screening boxes (201) are provided with two sets of second screening boxes (201) arranged one above the other from top to bottom, the filter holes of the conical screen (401) in the upper second screening box (201) being larger than the filter holes of the conical screen (401) in the lower second screening box (201).
4. The boiler bottom ash screen device according to claim 1, characterized in that the side walls of the first and second screening boxes (2, 201) are provided with mounting seats, and the first and second screening boxes (2, 201) are detachably connected by means of the mounting seats and fastening bolts.
5. The boiler bottom ash screen arrangement according to claim 1, characterized in that the discharge pipe (7) and the collection box (702) are each provided with three groups.
6. The boiler bottom ash screen device according to claim 1, characterized in that the dust suction means further comprises a second dust suction hose (602), the second dust suction hose (602) being connected to the discharge pipe (7) at a position close to the collecting bin (702).
7. The boiler furnace ash screen device according to claim 1, further comprising an auxiliary mechanism, wherein the auxiliary mechanism comprises a motor (202), the motor (202) is installed below the first screening box (2), a rotating shaft (203) is connected to the output end of the motor (202) in a transmission mode, the rotating shaft (203) is rotatably connected to the bottom of the first screening box (2), a connecting seat (403) is installed at the top end of the rotating shaft (203), a transmission rod (402) is inserted on the connecting seat (403), the transmission rod (402) is arranged in the middle of the conical screen (401), another group of connecting seats (403) are installed at the top end of the transmission rod (402), a stirring brush (404) is installed on the side wall of the connecting seat (403), and the bottom of the stirring brush (404) is in contact with the top of the conical screen (401) or the bottom of the first screening box (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320886369.1U CN220258654U (en) | 2023-04-19 | 2023-04-19 | Boiler bottom ash screen device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320886369.1U CN220258654U (en) | 2023-04-19 | 2023-04-19 | Boiler bottom ash screen device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220258654U true CN220258654U (en) | 2023-12-29 |
Family
ID=89319084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320886369.1U Active CN220258654U (en) | 2023-04-19 | 2023-04-19 | Boiler bottom ash screen device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220258654U (en) |
-
2023
- 2023-04-19 CN CN202320886369.1U patent/CN220258654U/en active Active
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