CN207131852U - Coal pulverizer hot blast pitch spindle nose sealing structure - Google Patents

Coal pulverizer hot blast pitch spindle nose sealing structure Download PDF

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Publication number
CN207131852U
CN207131852U CN201720778288.4U CN201720778288U CN207131852U CN 207131852 U CN207131852 U CN 207131852U CN 201720778288 U CN201720778288 U CN 201720778288U CN 207131852 U CN207131852 U CN 207131852U
Authority
CN
China
Prior art keywords
hot blast
spindle nose
sealing structure
coal pulverizer
seal receptacle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201720778288.4U
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Chinese (zh)
Inventor
吴敏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anhui Eron Electric Power Technology Co Ltd
Original Assignee
Anhui Eron Electric Power Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Anhui Eron Electric Power Technology Co Ltd filed Critical Anhui Eron Electric Power Technology Co Ltd
Priority to CN201720778288.4U priority Critical patent/CN207131852U/en
Application granted granted Critical
Publication of CN207131852U publication Critical patent/CN207131852U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

It the utility model is related to a kind of coal pulverizer hot blast pitch spindle nose sealing structure, for sealed socket sleeve in the outside of heatproof packing and to sealing, the inner side that axle is pressed close in the upper end of seal receptacle is provided with annular slope, and the V-shaped seal ring for being close to axle outer wall is provided with the annular slope;The lower end tip of the V-shaped seal ring is towards hot blast direction, and the portion of holding level with both hands is pressed with pressing plate on V-shaped seal ring.The utility model good airproof performance, service life are long, easy for installation.

Description

Coal pulverizer hot blast pitch spindle nose sealing structure
Technical field
It the utility model is related to a kind of sealing device, specifically coal pulverizer hot blast pitch spindle nose sealing structure.
Background technology
In the medium-speed pulverizer system of existing operation, it is a ratio that coal pulverizer hot blast pitch shaft head seal, which leaks out, leaks powder, The problem of more typical, certain economic loss is both caused to power plant, disturb power plant again and carry out production strictly in line with rules and regulations.Serious pollution week Collarette border, turn into thermal power generation corporations and all put forth effort on the problem of to be solved.
Above-mentioned to leak out, leak powder main cause be that selected sealing structure is generally deficient of elasticity, it is impossible to timely compensates gap; Plus coal pulverizer hot blast pitch spindle nose long-play, cause the concentricity of door-hinge and seal casinghousing not on a center.Mesh It is preceding in the industry in process of production generally use packing as encapsulant.Unit in the process of running, due to hot blast pitch spindle nose It is poorly sealed to cause hot blast leakage to cause factory building environment pollution.Seriously leak out, leak ash or even cause device damage, Zhi Nengting Fortune maintenance, has severely impacted the stable operation of unit.
CN201521124022.5 Chinese patents are related to a kind of controller of coal mill of boiler hot air isolating door door spindle sealing device, card The try to get to the heart of a matter rear portion of seat sets conical seal ring, and the rear portion of the conical seal ring sets circular seal chuck, circular seal chuck Neighboring set external screw thread, be connected with the internal thread at chuck base rear portion, seal chuck inside setting bellmouth, bellmouth Inner rim and the neighboring of conical seal ring coordinate, the packing inside the Dew Point welds with Dew Point in Dew Point Formation of sealing component is made before connecing, the utility model effectively eliminates isolation door and leaked out the problem of grey, ensure that the stabilization of equipment Safe operation.But above-mentioned technical proposal is not improved and solved for compensation gap, concentricity issues.
The content of the invention
The utility model is existing to solve the problems, such as, it is desirable to provide a kind of coal pulverizer hot blast pitch spindle nose sealing structure.
In order to achieve the above object, the technical solution adopted in the utility model includes support base and positioned at support base center Axle, is cased with heatproof packing on axle, and there is a hot blast both sides of axle, in addition to seal receptacle above support base, V-shaped seal ring and Pressing plate, for sealed socket sleeve in the outside of heatproof packing and to sealing, the inner side that axle is pressed close in the upper end of seal receptacle is provided with annular slope, The V-shaped seal ring for being close to axle outer wall is provided with the annular slope;The lower end tip of the V-shaped seal ring is towards hot blast direction, V The portion of holding level with both hands is pressed with pressing plate on type sealing ring.
Wherein, backing plate is provided between the bottom of seal receptacle and support base.
Wherein, O-ring seal is provided between the bottom of seal receptacle and backing plate.
Wherein, it is fixedly connected between the bottom of seal receptacle and backing plate by hold-down bolt.
Wherein, the outer wall of seal receptacle is provided with the fixed pressure ring of annular.
Wherein, the upper end of pressing plate and the seal receptacle is bolted.
Wherein, the lateral of seal receptacle is additionally provided with the guide ring that can import cold wind.
Compared to the prior art, the utility model good airproof performance, service life are long, easy for installation;Pass through seal receptacle, V-type The tight structure of sealing ring and pressing plate, for preventing hot blast pitch shaft head seal wind, dust from leaking outside, there is good sealing Property;The special V-shaped seal ring of moulding can fill up gap;Backing plate can improve the stability of seal receptacle, keep concentricity;It is O-shaped Sealing ring can reduce the frictional dissipation between the bottom of seal receptacle and backing plate;Fixed pressure ring improves the stabilization of sealing holder structure Property;Clean environment is kept for power plant, achieve the first class up to standard and raising productivity ratio, energy-saving etc. are significant.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model one embodiment.
Embodiment
In conjunction with accompanying drawing, the utility model is further described.
Referring to Fig. 1, Fig. 1 shows one embodiment of the present utility model, including support base 12 and positioned at support base 12 The axle 13 in center, heatproof packing 4 is cased with axle 13.There is an air channel of hot blast the both sides of axle 13, and the hot blast in air channel rises.Also wrap Include seal receptacle 5, V-shaped seal ring 2 and pressing plate 1 located at the top of support base 12, seal receptacle 5 is enclosed on the outside of heatproof packing 4 and right Axle 13 seals, and is tightly contacted with axle 13;The inner side that axle 13 is pressed close in the upper end of seal receptacle 5 is provided with annular slope, in annular slope It is caught in the V-shaped seal ring 2 for being close to the outer wall of axle 13;The lower end tip of V-shaped seal ring is towards hot blast direction, the upper end of V-shaped seal ring Flat portion is pressed with pressing plate.V-shaped seal ring 2 can supplement gap rapidly, prevent the intrusion of hot blast, dust.
Wherein, the outer wall of seal receptacle 5 is provided with the fixed pressure ring 3 of annular, and the stabilization of the structure of seal receptacle 5 is improved from outside Property.
Preferably, being provided with backing plate 9 between the bottom of seal receptacle 5 and support base 12, backing plate 9 can improve the steady of seal receptacle It is qualitative, keep concentricity.O-ring seal 11 is further provided between the bottom of seal receptacle 5 and backing plate 9, O-ring seal 11 can The frictional dissipation between the bottom of seal receptacle 5 and backing plate 9 is reduced, improves service life.
Preferably, it is fixedly connected between the bottom of seal receptacle 5 and backing plate 9 by some hold-down bolts 6.The He of pressing plate 1 If the upper end of seal receptacle 5 is connected by bolt stem 7.Connection can further ensure concentricity at two so that whole sealing structure It is more stable.
Wherein, the lateral of seal receptacle 5 is additionally provided with the guide ring 8 that can import cold wind, and introducing port is provided with connector 10, Ke Yishi Now outer give a dinner for a visitor from afar is protected with the static pressure risen between hot blast of coal pulverizer.
Said structure can preferably elasticity be good, seals the high Compound rubber of close, high temperature resistant, wearing coefficient, Jin Erbao The present embodiment nothing in 1 year is demonstrate,proved to leak out, leak powder, leakage.
Embodiment of the present utility model is described above in conjunction with drawings and Examples, the structure that embodiment provides not structure Paired limitation of the present utility model, those skilled in the art in the art can be according to needing to adjust, in appended claims In the range of make various deformations or amendments in protection domain.

Claims (7)

1. a kind of coal pulverizer hot blast pitch spindle nose sealing structure, including support base and the axle positioned at support base center, it is cased with axle There is hot blast heatproof packing, the both sides of axle, it is characterised in that:Also include seal receptacle, V-shaped seal ring and the pressure above support base Plate, for sealed socket sleeve in the outside of heatproof packing and to sealing, the inner side that axle is pressed close in the upper end of seal receptacle is provided with annular slope, institute State the V-shaped seal ring for being provided with annular slope and being close to axle outer wall;
The lower end tip of the V-shaped seal ring is towards hot blast direction, and the portion of holding level with both hands is pressed with pressing plate on V-shaped seal ring.
A kind of 2. coal pulverizer hot blast pitch spindle nose sealing structure according to claim 1, it is characterised in that:The bottom of seal receptacle Backing plate is provided between portion and support base.
A kind of 3. coal pulverizer hot blast pitch spindle nose sealing structure according to claim 2, it is characterised in that:The bottom of seal receptacle O-ring seal is provided between portion and backing plate.
A kind of 4. coal pulverizer hot blast pitch spindle nose sealing structure according to Claims 2 or 3, it is characterised in that:Seal receptacle Bottom and backing plate between be fixedly connected by hold-down bolt.
A kind of 5. coal pulverizer hot blast pitch spindle nose sealing structure according to claim 1, it is characterised in that:Outside seal receptacle Wall is provided with the fixed pressure ring of annular.
A kind of 6. coal pulverizer hot blast pitch spindle nose sealing structure according to claim 1, it is characterised in that:Pressing plate and described The upper end of seal receptacle is bolted.
A kind of 7. coal pulverizer hot blast pitch spindle nose sealing structure according to claim 1, it is characterised in that:The side of seal receptacle To being additionally provided with the guide ring that can import cold wind.
CN201720778288.4U 2017-06-30 2017-06-30 Coal pulverizer hot blast pitch spindle nose sealing structure Expired - Fee Related CN207131852U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720778288.4U CN207131852U (en) 2017-06-30 2017-06-30 Coal pulverizer hot blast pitch spindle nose sealing structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720778288.4U CN207131852U (en) 2017-06-30 2017-06-30 Coal pulverizer hot blast pitch spindle nose sealing structure

Publications (1)

Publication Number Publication Date
CN207131852U true CN207131852U (en) 2018-03-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720778288.4U Expired - Fee Related CN207131852U (en) 2017-06-30 2017-06-30 Coal pulverizer hot blast pitch spindle nose sealing structure

Country Status (1)

Country Link
CN (1) CN207131852U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113309896A (en) * 2021-06-11 2021-08-27 安徽玉龙电力科技有限公司 Improved generation coal pulverizer hot-blast accent door spindle nose seal structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113309896A (en) * 2021-06-11 2021-08-27 安徽玉龙电力科技有限公司 Improved generation coal pulverizer hot-blast accent door spindle nose seal structure

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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: 20180323

Termination date: 20180630

CF01 Termination of patent right due to non-payment of annual fee