CN209909892U - Slag crusher - Google Patents
Slag crusher Download PDFInfo
- Publication number
- CN209909892U CN209909892U CN201920574735.3U CN201920574735U CN209909892U CN 209909892 U CN209909892 U CN 209909892U CN 201920574735 U CN201920574735 U CN 201920574735U CN 209909892 U CN209909892 U CN 209909892U
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- Prior art keywords
- slag crusher
- crushing
- slag
- roller
- crushing mechanism
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- 239000002893 slag Substances 0.000 title claims abstract description 47
- 230000007246 mechanism Effects 0.000 claims abstract description 39
- 239000000498 cooling water Substances 0.000 claims abstract description 20
- 239000000919 ceramic Substances 0.000 claims description 7
- 239000003779 heat-resistant material Substances 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 3
- 230000010006 flight Effects 0.000 claims 1
- 238000003801 milling Methods 0.000 claims 1
- 238000001816 cooling Methods 0.000 abstract description 18
- 238000011084 recovery Methods 0.000 abstract description 8
- 239000013049 sediment Substances 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 25
- 238000005056 compaction Methods 0.000 description 8
- 238000005096 rolling process Methods 0.000 description 7
- 238000003475 lamination Methods 0.000 description 6
- 239000002918 waste heat Substances 0.000 description 6
- 238000004939 coking Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 239000002956 ash Substances 0.000 description 2
- 239000010884 boiler slag Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 241000237858 Gastropoda Species 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- Crushing And Grinding (AREA)
Abstract
The utility model provides a slag crusher, include: casing, broken mechanism and power input portion, broken mechanism set up in the casing, broken mechanism's one end with power input portion connects, the inside of broken mechanism is provided with the cooling water flow channel that supplies cooling water to flow. The utility model discloses can be with the material breakage of geomantic omen joint cooling entrance to avoid causing stifled sediment inside geomantic omen joint cooler, improved the efficiency that gets into geomantic omen joint cooling and preheat the recovery.
Description
Technical Field
The utility model relates to a fluidized bed technical field particularly, relates to a slag crusher.
Background
The recycling of the cooling waste heat of the boiler slag of the circulating fluidized bed belongs to the research category of low-grade energy utilization, the heat loss of the boiler mainly comprises the heat loss of exhaust gas and the heat loss of slag discharge, and if the two parts of the lost heat can be recycled, the coal consumption of power generation can be reduced, and the effects of energy conservation, emission reduction and consumption reduction can be achieved.
The existing circulating flow lake bed boiler slag cooling waste heat recovery system mainly comprises two types of wind-water combined cooling and a roller slag cooler. In the mode of wind-water combined cooling, after the slag enters the wind-water combined cooling equipment, the slag is blown up by using the high-pressure fluidized bed, heat exchange is carried out between the slag and the water cooling tube bank at the upper part, and meanwhile, fluidized air exchanges heat with the slag, so that heat energy is exchanged by cooling water and cooling air simultaneously, water enters feed water to increase the feed water temperature, and air returns to a hearth to support combustion. However, the requirement of the wind-water combined cooling on the granularity of the slag is high, and if a large number of slag blocks enter a cooler or secondary coking is carried out after the slag blocks enter the cooler, fluidization is not smooth, slag is not discharged from equipment, and the output of a unit is influenced. The roller slag cooler utilizes water and slag in a cooling pipeline to exchange heat and heat water, and simultaneously utilizes a spiral sheet in the slag cooler to apply mechanical thrust to the slag so as to move the slag to finish cooling and slag discharging. The structure can remove large slag blocks and does not produce secondary coking, but has weak waste heat recovery capability and weak water heating capability.
Research shows that the waste heat recovery capability and the cooling slag temperature capability of the wind-water combined cooling are far higher than those of a roller slag cooler. However, the problems of large slag blocks and secondary coking which reduce the reliability can not be solved all the time, if a high-temperature slag crushing device (mainly crushing the large slag blocks) is added at the inlet of the air-water combined cooler, the slag can be prevented from being blocked in the air-water combined cooler, and the recovery capacity of the waste heat of the slag can be improved.
SUMMERY OF THE UTILITY MODEL
The main object of the utility model is to provide a slag crusher to at least, solve the inside easy stifled sediment of wind water combined cooler in prior art, the poor technical problem of recovery ability of slag waste heat.
In order to achieve the above object, the utility model provides a slag crusher, include: casing, broken mechanism and power input portion, broken mechanism set up in the casing, broken mechanism's one end with power input portion connects, the inside of broken mechanism is provided with the cooling water flow channel that supplies cooling water to flow.
Preferably, the crushing mechanism is a centrifugal crushing mechanism or a rolling crushing mechanism.
Preferably, the crushing mechanism of roll-compaction formula includes the roll-compaction roller, the roll-compaction roller includes axle inner tube, axle outer tube and the tooth of the sword, axle inner tube cover is in the inside of axle outer tube, form between axle inner tube, the axle outer tube and be used as the annular gap of cooling water flow channel, the tooth of the sword is installed on the circumference outer wall of axle outer tube.
Preferably, a flow guiding spiral sheet is arranged in the annular gap.
Preferably, the crushing mechanism comprises two mutually matched crushing rollers, wherein the jaw teeth in one of the crushing rollers are arranged in a positive spiral manner, and the jaw teeth in the other crushing roller are arranged in a negative spiral manner.
Preferably, one of the lamination rollers drives the other lamination roller to rotate through a gear transmission mechanism, and the one lamination roller is connected with the power input part.
Preferably, the housing comprises an outer shell and a layer of heat resistant material lining the outer shell.
Preferably, the heat-resistant material layer is cast by using silicon carbide.
Preferably, the lamination roller is mounted to the housing by a ceramic self-aligning roller bearing.
Preferably, the ceramic self-aligning roller bearing is sealed by adopting a labyrinth and high-pressure pneumatic sealing structure.
Due to the adoption of the technical scheme, the utility model discloses can be with the material breakage of geomantic omen joint cooling entrance to avoid causing stifled sediment inside geomantic omen joint cooler, improved the efficiency that gets into geomantic omen joint cooling and preheat the recovery.
In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention. In the drawings:
fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic view of the matching structure of two rolling rollers of the present invention;
figure 3 is a cross-sectional view of the laminating roller of the present invention.
Wherein the figures include the following reference numerals: 1. a power input section; 2. an inner shaft tube; 3. an outer shaft tube; 4. a jaw tooth; 5. a flow guiding spiral sheet; 6. a housing; 7. a layer of heat resistant material; 8. a ceramic self-aligning roller bearing; 9. a bearing seat; 10. a round nut; 11. rotating the water joint; 12. a connecting flange; 13. a gear; 14. labyrinth adds high-pressure pneumatic seal structure.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below 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 in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
According to the utility model discloses slag crusher, especially a circulating fluidized bed boiler high temperature precooling slag crusher, include: casing, broken mechanism and power input part 1, broken mechanism set up in the casing, broken mechanism's one end with power input part 1 is connected, the inside of broken mechanism is provided with the cooling water flow channel that supplies the cooling water to flow.
The temperature of the slag discharged by the circulating fluidized bed boiler is about 900 ℃, the slag is in a solid state at the temperature, and the large slag blocks come from the combustion working condition of a hearth, and according to the characteristics of the design of the air-water combined cooler, the use requirement can be met as long as ash particles are below 8mm and are uniformly distributed.
When in use, the utility model can be arranged in front of the outlet of the circulating fluidized bed boiler to the inlet of the wind-water combined cooler or in front of the ash conveying equipment of the pulverized coal furnace. The sediment gets into through lower sediment pipe at the bottom of the furnace the utility model provides an in the casing of slag crusher, install broken mechanism in the casing to the realization makes its granularity control below 8mm to the breakage of slagging tap. When the prime motor drives the power input part 1 to rotate, the power input part 1 drives the crushing mechanism to work, and the crushing function is realized. When the crushing mechanism works, cooling water flows into the crushing mechanism from the cooling water inlet A and flows out from the cooling water outlet B, so that the crushing mechanism can operate at high temperature for a long time and is not deformed.
Due to the adoption of the technical scheme, the utility model discloses can be with the material breakage of geomantic omen joint cooling entrance to avoid causing stifled sediment inside geomantic omen joint cooler, improved the efficiency that gets into geomantic omen joint cooling and preheat the recovery.
In the present invention, the crushing mechanism may be in a variety of different forms, for example, preferably, the crushing mechanism is a centrifugal crushing mechanism, or a roller crushing type crushing mechanism.
More preferably, the crushing mechanism of roll-compaction formula includes the roll-compaction roller, the roll-compaction roller includes axle inner tube 2, axle outer tube 3 and jaw tooth 4, axle inner tube 2 cover is in the inside of axle outer tube 3, form between axle inner tube 2, the axle outer tube 3 and be used as the annular gap of cooling water flow channel, jaw tooth 4 is installed on the circumference outer wall of axle outer tube 3. Preferably, be provided with water conservancy diversion flight 5 in the annular gap, water can be given birth to the turbulent flow inside to water conservancy diversion flight 5, has strengthened the heat transfer, can form an organic whole with axle outer tube and axle inner tube connection simultaneously, has increased the intensity of roller. In addition, in order to ensure the normal water inlet and outlet of the water flow, one end of the rolling roller adopts a rotary water joint 11, and a connecting flange 12 is arranged on the rotary water joint.
In this embodiment, the cooling water inlet a is one end of the annular gap, the cooling water outlet B is one end of the shaft inner tube 2, and the other end of the shaft inner tube 2 is provided with an opening communicating the inside of the shaft inner tube 2 and the annular gap, so that the cooling water enters the annular gap from the cooling water inlet a, enters the inside of the shaft inner tube 2 through the opening, and then flows out from the cooling water outlet B.
In a more preferred embodiment, the crushing mechanism of the present invention comprises two mutually cooperating crushing rolls, one of the teeth of the jaw 4 in the crushing roll being arranged in a positive spiral manner, and the other of the teeth of the jaw 4 in the crushing roll being arranged in a negative spiral manner. Preferably, one of the lamination rollers is connected with the power input part 1, and the other lamination roller is driven to rotate by a gear transmission mechanism. Preferably, the power input 1 is a coupling. When the prime mover drives the shaft coupling to rotate, one gear 13 which is coaxial with the shaft coupling in the gear transmission mechanism drives the other rolling roller to synchronously rotate through the other gear 13, and due to the characteristics of the gears, the jaw teeth on the two rolling rollers are mutually extruded to realize crushing. Because the double rollers are mutually milled, the toothed plate is not required to be impacted, and the short plate which causes early damage to equipment and can not be cooled under the high-temperature state is avoided. Of course, the utility model provides a crushing mechanism of roll compaction formula includes one roll compaction roller. Preferably, the jaw teeth are of an eagle claw configuration, capable of gripping large slugs, and not capable of rolling on the gear shaft.
Since the device is operated in a high-temperature environment at 800-900 ℃, in order to ensure the long-term stable operation of the rotor, the shell preferably comprises a shell 6 and a heat-resistant material layer 7 lined in the shell 6. Preferably, the heat-resistant material layer 7 is cast from silicon carbide, so that the apparatus can operate at a high temperature of 1100 ℃, but may be made of other high-temperature materials.
In order to keep the bearing stably operating at high temperature for a long time, the rolling roller is preferably mounted on the shell through a ceramic self-aligning roller bearing 8, which can ensure the bearing stably operating at high temperature of 800 ℃ for a long time. Preferably, the ceramic self-aligning roller bearing 8 is sealed by a labyrinth and high-pressure pneumatic sealing structure 14.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A slag crusher, comprising: the crushing mechanism is arranged in the shell, one end of the crushing mechanism is connected with the power input part (1), and a cooling water flow channel for cooling water to flow is arranged in the crushing mechanism.
2. The slag crusher of claim 1, wherein the crushing mechanism is a centrifugal crushing mechanism or a roller crushing mechanism.
3. The slag crusher according to claim 2, characterized in that the crushing mechanism comprises a crushing roller, the crushing roller comprises an inner shaft tube (2), an outer shaft tube (3) and jaw teeth (4), the inner shaft tube (2) is sleeved inside the outer shaft tube (3), an annular gap serving as the cooling water flow channel is formed between the inner shaft tube (2) and the outer shaft tube (3), and the jaw teeth (4) are installed on the circumferential outer wall of the outer shaft tube (3).
4. Slag crusher according to claim 3, characterized in that flow guiding flights (5) are arranged in the annular gap.
5. A slag crusher according to claim 3, characterized in that the crushing means comprises two mutually cooperating crushing rolls, the teeth (4) of the jaws of one of the rolls being arranged in a positive helix and the teeth (4) of the other roll being arranged in a negative helix.
6. A slag crusher according to claim 5, characterized in that one of said rollers is connected to said power input (1) and the other roller is driven in rotation by a gear transmission.
7. Slag crusher according to claim 1, characterized in that the casing comprises a casing (6) and a layer of heat resistant material (7) lining the casing (6).
8. Slag crusher according to claim 7, characterized in that the heat-resistant material layer (7) is cast from silicon carbide.
9. Slag crusher according to claim 3, characterized in that the milling roller is mounted to the housing by means of a ceramic self-aligning roller bearing (8).
10. Slag crusher according to claim 9, characterized in that the ceramic self-aligning roller bearing (8) is sealed in a labyrinth plus high-pressure pneumatic sealing structure (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920574735.3U CN209909892U (en) | 2019-04-24 | 2019-04-24 | Slag crusher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920574735.3U CN209909892U (en) | 2019-04-24 | 2019-04-24 | Slag crusher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209909892U true CN209909892U (en) | 2020-01-07 |
Family
ID=69045494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920574735.3U Active CN209909892U (en) | 2019-04-24 | 2019-04-24 | Slag crusher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209909892U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113446612A (en) * | 2021-07-28 | 2021-09-28 | 贠元璐 | Boiler slagging waste heat recovery device |
| CN114263903A (en) * | 2021-12-09 | 2022-04-01 | 扬州晨光特种设备有限公司 | Natural circulation water cooling system of circulating fluidized bed boiler slag discharge pipe |
| CN115888892A (en) * | 2022-12-21 | 2023-04-04 | 山东鲁泰热电有限公司 | Dustless slag crusher of steam power plant |
-
2019
- 2019-04-24 CN CN201920574735.3U patent/CN209909892U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113446612A (en) * | 2021-07-28 | 2021-09-28 | 贠元璐 | Boiler slagging waste heat recovery device |
| CN113446612B (en) * | 2021-07-28 | 2022-10-14 | 中材节能股份有限公司 | Boiler slagging waste heat recovery device |
| CN114263903A (en) * | 2021-12-09 | 2022-04-01 | 扬州晨光特种设备有限公司 | Natural circulation water cooling system of circulating fluidized bed boiler slag discharge pipe |
| CN114263903B (en) * | 2021-12-09 | 2024-05-24 | 扬州晨光特种设备有限公司 | Natural circulation water cooling system of circulating fluidized bed boiler slag discharging pipe |
| CN115888892A (en) * | 2022-12-21 | 2023-04-04 | 山东鲁泰热电有限公司 | Dustless slag crusher of steam power plant |
| CN115888892B (en) * | 2022-12-21 | 2023-08-15 | 山东鲁泰热电有限公司 | Dust-free slag crusher for thermal power plant |
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