CN201447632U - Mechanical seal for end surface of ribbon type screw of disc refiner - Google Patents
Mechanical seal for end surface of ribbon type screw of disc refiner Download PDFInfo
- Publication number
- CN201447632U CN201447632U CN2009200397222U CN200920039722U CN201447632U CN 201447632 U CN201447632 U CN 201447632U CN 2009200397222 U CN2009200397222 U CN 2009200397222U CN 200920039722 U CN200920039722 U CN 200920039722U CN 201447632 U CN201447632 U CN 201447632U
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- sealing
- seal ring
- gland
- spring
- end surface
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- Expired - Fee Related
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Abstract
The utility model relates to a ribbon type screw feeder in a disc refiner (also called as thermofiner) for fiber preparation on a papermaking or medium-density fiberboard production line, in particular to a seal for a ribbon type screw and a feeding shell. The technical scheme adopted by the utility model is as follows: the seal comprises a shaft, a shaft sleeve, a mounting flange, a front gland and a rear gland, and a fixed seal ring, a movable seal ring and a spring are mounted in the rear part of the gap between the shaft, the shaft sleeve, the mounting flange, the front gland and the rear gland; the fixed seal ring is mounted in the rear gland, the rear end surface of the fixed seal ring is connected with one end of the spring, the front end surface of the fixed seal ring is tightly contacted with the rear end surface of the movable seal ring, and the other end of the spring abuts against the inner surface of the rear gland. The reliable mechanical seal changes the method of sealing the ribbon type screw, the leakage of cooling water is little, consumption is less, and the service life is long.
Description
Technical field
The utility model relates to the middle belt feeding screw of disc mill (also claiming defibrator) of the fiber production on papermaking or the medium density fiber board assembly line, particularly relates to the sealing device of belt spiral and charging housing.
Background technology
In the defibrator system of papermaking or medium density fibre board (MDF) slurrying, for the uniformity that guarantees charging and obtain stable fiber quality, in fill process, adopt belt spiral feeding structure.Mill main frame power resources are main motor, and raw material rotates in the mill main frame in high speed and is broken down into fiber.In order to seal up the steam and the slurry in mill main frame defibrination district, packing_seal is often adopted in the sealing of present spiral feeding structure both domestic and external, and packing makes it closely contact with rotating shaft by hold-down ring and back-up ring, and packing is expanded.Be auxiliary seal, add sealing medium (water) usually and reach sealing function.The defective of sealing device is: after work a period of time, packing is bigger to the wearing and tearing of rotating shaft, causes sealing medium to leak in a large number, seal to shorten service life, equipment work efficient is low, maintenance of equipment time lengthening, cooling-water consumption increases and follow-up dry workshop section power consumption increases.
Summary of the invention
The purpose of this utility model is for overcoming the deficiencies in the prior art, a kind of novel reliable disc mill belt spiral end face mechanical sealing device is provided, changed belt helixseal mode, and the cooling water amount of leakage is little, consume less and long service life.
The technical solution adopted in the utility model is: be made up of axle, axle sleeve, mounting flange, preceding gland and rear pressing cover, the fixed ring of sealing be installed, sealing rotating ring and spring at the rear portion, gap that axle, axle sleeve, mounting flange, preceding gland and rear pressing cover are formed; The fixed ring of sealing is installed in the rear pressing cover, and the rear end face of the fixed ring of sealing links to each other with an end of spring, and the front end face of the fixed ring of sealing closely contacts the rear end face of sealing rotating ring, and the spring other end abuts against the rear pressing cover inner face.
The utility model is formed sealing device by the counterrotating alloy sealing ring of doing perpendicular to helical axis, overcome the problem that sealing medium is revealed by sealing ring, realize sealing effectiveness, can reduce the leakage of sealing medium in the running and the steam in the defibrination process with the damage of fiber to mechanical seal, but the wearing and tearing of the flexible compensation sealing interannular by spring.Have following effect:
1. traditional packing replacement cycle, generally at 1-2 month, the utility model mechanical seal reached 1-3 service life, can prolong the equipment continuous operation time, shortened maintenance time, increased work efficiency.
2. the utility model lacks than leakage rate with packing_seal, can save a large amount of sealing waters, reduces production costs.
3. the moisture content that traditional packing is sealed into the defibrination district is many, increased the required energy of fiber drying, and the utility model mechanical sealing leakage amount is few, thereby can reduces energy consumption for drying, saves operating cost.
4. the utility model reaches zero leakage, produces and environmental protection provides the foundation for the user cleans.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the A partial enlarged drawing of Fig. 1.
Among the figure: 201.; 202. torque transmits bolt; 203. axle sleeve; 204.O RunddichtringO; 205. sealing rotating ring; 206. the fixed ring of sealing; 207. spring; 208. end cap; 209. preceding gland; 212. mounting flange; 213.O RunddichtringO; 214. rear pressing cover.
The specific embodiment
As Fig. 1, the utility model mainly is made up of axle 201, axle sleeve 203, mounting flange 212, preceding gland 209 and rear pressing cover 214.Axle sleeve 203 transmits bolt 202 with torque and is connected on the axle 201.End cap 208 is installed on rear pressing cover 214.At the rear portion, gap that axle 201, axle sleeve 203, mounting flange 212, preceding gland 209 and rear pressing cover 214 are formed sealing being installed encircles 206 surely, seals rotating ring 205 and spring 207.At the rear portion of axle 201, sealing encircles 206 surely and is installed in the rear pressing cover 214, fit together with rear pressing cover 214, sealing encircle surely 206 with rear pressing cover 214 between O RunddichtringO 213 is installed, seal by this O RunddichtringO 213.Sealing encircles 206 rear end face surely and links to each other with an end of spring 207, and the other end of spring 207 is near on rear pressing cover 214 inner faces.Sealing encircles 206 front end face surely and closely contacts with the rear end face of sealing rotating ring 206, between sealing rotating ring 206 and axle sleeve 203 O RunddichtringO 204 is installed, and seals by this O RunddichtringO 204 and axle sleeve 203.After sealing rotating ring 205 end faces encircle 206 service wears surely with sealing, can carry out position compensation by spring 207.
During the utility model work, axle 201 rotations, sealing encircles 206 surely, sealing rotating ring 205 is adjacent under spring 207 effects, sealing rotating ring 205 is by being installed in axle sleeve 203 and the torque acting in conjunction one superhigh speed rotation of transmitting bolt 202 of axle on 201, and sealing encircles 206 transfixions surely, like this, make the dynamic and static ring contact-making surface that rotation relatively take place, under the effect of circulation sealing medium, form one deck liquid diaphragm seal, make circulation sealing medium (water) not leak into atmosphere end and also do not leak into the defibrination working region, the steam of while defibrination working region, fibers etc. also can't enter in the circulating cooling medium, reach sealed at both ends purpose.Sealing encircle surely 206 and sealing rotating ring 205 between relatively at a high speed rotation, producing a large amount of frictional heats can take out of by circulation sealing medium (cooling water), the aging distortion of the secondary element of reducing friction, thereby can guarantee the sealing surface operate as normal, reach sealing effectiveness.When sealing encircle surely 206 and sealing rotating ring 205 when end wear occurring after working long hours, can be compensated by the flexible of spring 207, thereby prolong stream time and service life greatly.End cap 208 can reduce the impact of the fluctuation of steam pressure in the belt spiral transportation to mechanical seal when work, and can reduce tiny solid particulate matter and encircle the accumulation of 206 positions surely in sealing, thereby has stoped the damage of sealing device.
Claims (2)
1. disc mill belt spiral end face mechanical sealing device, form by axle (201), axle sleeve (203), mounting flange (212), preceding gland (209) and rear pressing cover (214), it is characterized in that: at the rear portion, gap that axle (201), axle sleeve (203), mounting flange (212), preceding gland (209) and rear pressing cover (214) are formed the fixed ring of sealing (206) is installed, sealing rotating ring (205) and spring (207); The fixed ring of sealing (206) is installed in the rear pressing cover (214), the rear end face of the fixed ring of sealing (206) links to each other with an end of spring (207), the front end face of the fixed ring of sealing (206) closely contacts the rear end face of sealing rotating ring (205), and the other end of spring (207) abuts against rear pressing cover (214) inner face.
2. disc mill belt spiral end face mechanical sealing device according to claim 1, it is characterized in that: O RunddichtringO (213) is installed between fixed ring of sealing (206) and rear pressing cover (214), O RunddichtringO (204) is installed between sealing rotating ring (205) and axle sleeve (203).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200397222U CN201447632U (en) | 2009-04-29 | 2009-04-29 | Mechanical seal for end surface of ribbon type screw of disc refiner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200397222U CN201447632U (en) | 2009-04-29 | 2009-04-29 | Mechanical seal for end surface of ribbon type screw of disc refiner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201447632U true CN201447632U (en) | 2010-05-05 |
Family
ID=42552348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200397222U Expired - Fee Related CN201447632U (en) | 2009-04-29 | 2009-04-29 | Mechanical seal for end surface of ribbon type screw of disc refiner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201447632U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363120A (en) * | 2013-07-12 | 2013-10-23 | 海南金海浆纸业有限公司 | Spindle sealing and sand preventing isolation device for mixer of pre-impregnation tower |
| CN110565428A (en) * | 2019-09-29 | 2019-12-13 | 镇江中福马机械有限公司 | Sealing device for main shaft of disc mill of density fiberboard production equipment |
-
2009
- 2009-04-29 CN CN2009200397222U patent/CN201447632U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363120A (en) * | 2013-07-12 | 2013-10-23 | 海南金海浆纸业有限公司 | Spindle sealing and sand preventing isolation device for mixer of pre-impregnation tower |
| CN110565428A (en) * | 2019-09-29 | 2019-12-13 | 镇江中福马机械有限公司 | Sealing device for main shaft of disc mill of density fiberboard production equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100505 Termination date: 20170429 |