CN208963947U - A kind of circulating fluidized bed boiler Scraper tail bearing sealing device - Google Patents
A kind of circulating fluidized bed boiler Scraper tail bearing sealing device Download PDFInfo
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- CN208963947U CN208963947U CN201821503428.8U CN201821503428U CN208963947U CN 208963947 U CN208963947 U CN 208963947U CN 201821503428 U CN201821503428 U CN 201821503428U CN 208963947 U CN208963947 U CN 208963947U
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- fluidized bed
- circulating fluidized
- bed boiler
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Abstract
The utility model discloses a kind of circulating fluidized bed boiler Scraper tail bearing sealing devices, are mounted in the shaft between the shell and bearing block of feeder tail portion, which includes packing assemblies, sealing ring and outside framework oil seal；The packing assemblies include packing, and the packing installation on the housing, and is closely sheathed in the shaft outside shell；The sealing ring fixation is suited on the shaft, and abuts inner face of the bearing block towards shell；The skeleton oil seal is set between the bearing block and shaft.The utility model solve the problems, such as Scraper tail bearing because internal positive pressure sealing air and wear at axis it is poorly sealed caused by leakage of pulverized coal, the tight seal for realizing Scraper tail bearing seat avoids bearing damage and environmental pollution because of caused by internal leakage of pulverized coal.
Description
Technical field
The utility model relates to a kind of circulating fluidized bed boiler Scraper equipment, and in particular to a kind of fire coal recycle stream
Fluidized bed boiler Scraper tail bearing sealing device.
Background technique
Combustion technology of circulating fluidized be developed from Boiling Combustion technology the eighties one kind it is novel, have development
The clean fired coal combustion technology of prospect.Due to fuel tolerance is wide, high combustion efficiency, load adjustment ability are good, desulphurization denitration
Many advantages, such as simple process, excellent environmental-protecting performance, the superiority of circulating fluidized bed boiler is increasingly widely recognized as, and is obtained
Fast development.
General circulating fluidized bed boiler uses front wall, rear wall and side wall coal-feeding mode, especially side wall and later period to coal,
Since arrangement space is due to longer, two-stage is generally provided with to coal, i.e. the first order is Gravimetric Coal Feeders, and the second level is
Scraper.Meanwhile boiler coal feeding mouth is typically located at feed back leg to coal or burner hearth aperture directly to coal, furnace in order to prevent
High warm flue gas is played a reversed role to Scraper and belt weighing feeder in thorax, so that scaling loss feeder and its components,
The cold First air of 20kPa or so is devised in feeder apparatus casing as sealing air, and burner hearth high-temperature flue gas is avoided to play a reversed role.But
Be, due to traditional screeds feeder bearing wear sealing structure pattern traditional at axis be not able to satisfy internal positive pressure sealing air sealing want
Ask, Scraper occur because wear at axis it is poorly sealed due to cause inner sealing wind to carry leakage of pulverized coal phenomenon, cause and ring
Border pollution and equipment bearing damage, seriously affect unit normal safe operation.
Utility model content
In order to solve Scraper shell in the prior art wear at axis leak coal dust cause bearing damage and environmental pollution
The technical issues of, the purpose of this utility model is to provide a kind of sealings of circulating fluidized bed boiler Scraper tail bearing to fill
It sets, it uses packing_seal, sealing ring and framework oil seal of bearing block triple seal measure, and effective solution Scraper is close
Imprecise problem is sealed, the safety and reliability of circulating fluidized bed boiler Scraper equipment and unit is improved.
The technical scheme adopted by the utility model to solve the technical problem is as follows:
A kind of circulating fluidized bed boiler Scraper tail bearing sealing device is provided, feeder tail portion is mounted on
Shell and bearing block between shaft on, which includes packing assemblies, sealing ring and outside framework oil seal；The packing is close
Sealing assembly includes packing, and the packing installation on the housing, and is closely sheathed in the shaft outside shell；It is described close
Seal ring fixation is suited on the shaft, and abuts inner face of the bearing block towards shell；The skeleton oil seal is set to
Between the bearing block and shaft.
According to the above technical scheme, the packing assemblies further include packing grooved ring, packing pressure ring and packing fastening bolt
Nut, the packing grooved ring is fixedly mounted on the housing, and cavity is formed between shaft, and the packing is placed in described
In cavity, the packing pressure ring is mounted on the packing grooved ring by packing fastening bolt nut, and the packing pressure ring is used for
Carrying out pressure to packing is in close contact it with shaft.
According to the above technical scheme, the packing is graphite packing.
According to the above technical scheme, it is interference fitted between the sealing ring and shaft.
According to the above technical scheme, the inner wall of the bearing block and shaft contacts is equipped with mounting groove, and the outside framework oil seal is put
It is placed in the mounting groove.
According to the above technical scheme, the outside framework oil seal is arranged close to the inner face of the bearing block.
The beneficial effect that the utility model generates is:
1) the utility model wears first of seal approach at shell as shaft using packing, for preventing Scraper
Enclosure interior positive seal wind carries coal dust and leaks from there, using sealing ring as second seal approach, sets for completely cutting off
The coal dust of standby shell leakage enters bearing block, using outside framework oil seal as third road seal approach, for avoiding the coal dust of leakage
Bearing is damaged into bearing block, guarantees the sealing of bearing block apparatus casing side, it is effective to prevent by this triple seal measure
The pollution of leakage of pulverized coal dust environment, bearing damage problem caused by due to the leakage of Scraper internal positive pressure sealing air；
2) the utility model structure is simple, improvement cost is low, is easy to repair and maintenance, and practical function is significant, can successfully improve
Scraper operational reliability and it is effectively improved environmental pollution, there is equipment good economy performance, convenient, high reliablity the skill of maintenance
Art advantage.
Detailed description of the invention
Below in conjunction with accompanying drawings and embodiments, the utility model is described in further detail, in attached drawing:
Fig. 1 is the structural schematic diagram of the utility model embodiment.
In figure: 1- shell；2- packing pressure ring；3- packing grooved ring；4- packing；5- packing fastening bolt nut；6- sealing ring；
7- outside framework oil seal；8- bearing block；9- shaft；10- bearing.
Specific embodiment
In the description of the present invention, it should be noted that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
"front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", " orientation or positional relationships of the instructions such as "inner", "outside"
To be based on the orientation or positional relationship shown in the drawings, it is merely for convenience of describing the present invention and simplifying the description, without referring to
Show or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot manage
Solution is limitations of the present invention.In addition, term " first ", " second " are used for description purposes only, and should not be understood as indicating
Or imply relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.In addition, in the description of the present invention, unless otherwise indicated, " multiples' " contains
Justice is two or more.
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is a part of the embodiment of the utility model, instead of all the embodiments.It should be appreciated that described herein
Specific embodiment only to explain the utility model, is not used to limit the utility model.Based on the implementation in the utility model
Example, those of ordinary skill in the art's every other embodiment obtained without making creative work, all belongs to
In the range of the utility model protection.
As shown in Figure 1, a kind of circulating fluidized bed boiler Scraper tail bearing sealing device, is mounted on to coal
In shaft 9 between the shell 1 and bearing block 8 of drive end unit, which includes packing assemblies, sealing ring 6 and outside framework oil seal
7；Packing assemblies include packing 4, and packing 4 is mounted on shell 1, and are closely sheathed in the shaft 9 outside shell 1；
6 fixing sleeve of sealing ring is loaded in shaft 9, and abuts inner face of the bearing block 8 towards shell 1；Outside framework oil seal 7 is sealed at axis
It holds between seat 8 and shaft 9, bearing 10 is installed in bearing block 8, bearing 10 is mounted on the end of shaft 9.
In the preferred embodiment of the utility model, as shown in Figure 1, packing assemblies further include packing grooved ring 3, packing
Pressure ring 2 and packing fastening bolt nut 5, packing grooved ring 3 is fixedly mounted on shell 1, and cavity, disk are formed between shaft 9
Root 4 is placed in cavity, and packing pressure ring 2 is mounted on packing grooved ring 3 by packing fastening bolt nut 5, and packing pressure ring 2 is used for
Carrying out pressure to packing 4 is in close contact it with shaft 9, guarantees that along the circumferential direction sealing is tight between packing and shaft, prevents
Scraper enclosure interior positive seal wind carries coal dust and leaks from there.
Specifically, the quantity of packing fastening bolt nut be it is multiple, be evenly arranged in packing pressure ring and packing slot in a ring
Between ring, by adjusting packing fastening bolt nut adjustment packing pressure ring to the tightness of packing, to adjust the sealing of packing
Effect.Packing pressure ring using split type, in order to when dismantling and replace packing without dismantling bearing block.
In the preferred embodiment of the utility model, as shown in Figure 1, packing 4 is graphite packing, soft graphite disk is selected
Root, self-lubricating are not required to refuel.
In the preferred embodiment of the utility model, as shown in Figure 1, be interference fitted between sealing ring 6 and shaft 9, with turning
Axis rotates together.Wherein, sealing ring is installed using preheating, and positioning of crossing, close to installation on the inside of bearing block, for completely cutting off
The coal dust blow-through that leaks is to bearing block when packing_seal fails.
In the preferred embodiment of the utility model, as shown in Figure 1, the inner wall that bearing block 8 is contacted with shaft 9 is equipped with peace
Tankage, outside framework oil seal 7 are placed in mounting groove.
In the preferred embodiment of the utility model, as shown in Figure 1, outside framework oil seal 7 is set close to the inner face of bearing block 8
It sets, for guaranteeing the sealing effect of bearing block.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations all should belong to the protection scope of the appended claims for the utility model.
Claims (6)
1. a kind of circulating fluidized bed boiler Scraper tail bearing sealing device, is mounted on the shell of feeder tail portion
In shaft between bearing block, which is characterized in that the device includes packing assemblies, sealing ring and outside framework oil seal；
The packing assemblies include packing, and the packing installation on the housing, and is closely sheathed on outside shell
Shaft on；
The sealing ring fixation is suited on the shaft, and abuts inner face of the bearing block towards shell；
The skeleton oil seal is set between the bearing block and shaft.
2. circulating fluidized bed boiler Scraper tail bearing sealing device according to claim 1, which is characterized in that
The packing assemblies further include packing grooved ring, packing pressure ring and packing fastening bolt nut, the fixed peace of the packing grooved ring
Dress on the housing, and forms cavity between shaft, and the packing is placed in the cavity, and the packing pressure ring passes through
Packing fastening bolt nut is mounted on the packing grooved ring, and the packing pressure ring is used to carry out packing pressure to make itself and shaft
It is in close contact.
3. circulating fluidized bed boiler Scraper tail bearing sealing device according to claim 1 or 2, feature exist
In the packing is graphite packing.
4. circulating fluidized bed boiler Scraper tail bearing sealing device according to claim 1, which is characterized in that
It is interference fitted between the sealing ring and shaft.
5. circulating fluidized bed boiler Scraper tail bearing sealing device according to claim 1, which is characterized in that
The inner wall of the bearing block and shaft contacts is equipped with mounting groove, and the outside framework oil seal is placed in the mounting groove.
6. circulating fluidized bed boiler Scraper tail bearing sealing device, feature exist according to claim 1 or 5
In the outside framework oil seal is arranged close to the inner face of the bearing block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821503428.8U CN208963947U (en) | 2018-09-13 | 2018-09-13 | A kind of circulating fluidized bed boiler Scraper tail bearing sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821503428.8U CN208963947U (en) | 2018-09-13 | 2018-09-13 | A kind of circulating fluidized bed boiler Scraper tail bearing sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208963947U true CN208963947U (en) | 2019-06-11 |
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ID=66754999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821503428.8U Active CN208963947U (en) | 2018-09-13 | 2018-09-13 | A kind of circulating fluidized bed boiler Scraper tail bearing sealing device |
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| CN (1) | CN208963947U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110804722A (en) * | 2019-11-27 | 2020-02-18 | 特诺恩技术（天津）有限公司 | Sealing unit group |
-
2018
- 2018-09-13 CN CN201821503428.8U patent/CN208963947U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110804722A (en) * | 2019-11-27 | 2020-02-18 | 特诺恩技术（天津）有限公司 | Sealing unit group |
| CN110804722B (en) * | 2019-11-27 | 2023-09-15 | 特诺恩技术（天津）有限公司 | Sealing unit group |
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| TR01 | Transfer of patent right |
Effective date of registration: 20200622 Address after: 430223 Room 309, floor 3, Kaidi building, No.1, Jiangxia Avenue, Donghu New Technology Development Zone, Wuhan City, Hubei Province Patentee after: Wuhan Fengying Energy Technology Engineering Co.,Ltd. Address before: 613, room 430223, Katie building, Jiangxia Road, Miao Shan Development Zone, Jiangxia District, Hubei, Wuhan Patentee before: WUHAN KAIDI ELECTRIC POWER ENGINEERING Co.,Ltd. |