CN203604152U - Sealing device for compressor stuffing box - Google Patents
Sealing device for compressor stuffing box Download PDFInfo
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- CN203604152U CN203604152U CN201320759116.4U CN201320759116U CN203604152U CN 203604152 U CN203604152 U CN 203604152U CN 201320759116 U CN201320759116 U CN 201320759116U CN 203604152 U CN203604152 U CN 203604152U
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- ring
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- seal
- sealing unit
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Abstract
The utility model discloses a sealing device for a compressor stuffing box. The sealing device comprises a valve body (1) and a gland (2) sealing one end of the valve body (1) and further comprises an oil scraping ring (3), a baffle (4), a sealing ring (5) and a spacer ring (7), wherein the valve body (1) is filled with the oil scraping ring (3), the baffle (4), the sealing ring (5) and the spacer ring (7). A piston rod (6) penetrates through the sealing components and in close contact with all the components. Axial springs (9) are arranged on the outer side of the sealing ring (5) and the outer side of the oil scraping ring (3). A tooth opening of the gland (2) is provided with the oil scraping device (8). The sealing device for the compressor stuffing box is stable in sealing performance and obvious in oil escaping effect.
Description
Technical field
The utility model relates to a kind of compressor part, refers to especially a kind of compressor packing letter seal arrangement.
Background technique
Air compressor is that the equipment for needing pressure wind provides the machinery with wind, and in the industries such as mining, communications and transportation, manufacture of cement, application is all very general.What current many air compressors adopted is planar metal stuffing box, L8-60 type air compressor is relatively typical a kind of, and described stuffing box is generally made up of two groups of (Fourth Ring) seal rings, one group of (two rings) scraper ring, three groups of spacer rings, three groups of baffle plates and spring etc.Working principle is to utilize the tight seal of snak link and scraper ring, makes its inner ring be close to piston rod and seals, and forbids that the oil of crankcase is revealed to cylinder along piston rod.Because L8-60 type air compressor is close to cement grinding mill room and mineral powder bin, dust is larger, make gas, oil in filler sneak into more impurity, cause seal ring and scraper ring easily to wear and tear, gap between filler and piston rod will become greatly, and the filler newly changing just starts after only having used one month to have run oil, within when serious every three days, just needs to refuel 20kg, and also greatly reduce the working life of filler and piston rod, this has not only increased cost of production and has also strengthened the labor intensity of pincers worker.
Run in oily problem industry and also proposed many improvement projects for stuffing box, more typical scheme is accuracy of manufacturing by improving the each element of stuffing box and piston rod, the wear resistance that improves seal ring and scraper ring, strict installation precision, the frequent wash oil filter screen controlled while installing.But these measures can not solve L8-60 type air compressor oily phenomenon of serious race under rugged environment completely.
Domestic patent database disclosed the patented technology of some relevant packing cases in recent years:
For example [application number] CN201010511084.7, [title] stuffing box type compensating joint, [notification number] CN101975317, a kind of stuffing box type compensating joint of this disclosure of the invention, it comprises body and can be sheathed on intrinsic telescopic pipe, between described telescopic pipe cylindrical and body, be provided with gland, described gland, telescopic pipe cylindrical and body form stuffing box, two ends in described stuffing box are provided with lining, between described lining, be arranged at intervals with rubber seal and graphite packing layer, and be equipped with fixing bolt between described gland and body, be fixed bolt and be provided with set screw nut, above-mentioned stuffing box type compensating joint is by tighting a bolt and nut makes gland press seal circle, thereby make seal ring generation resiliently deformable extrusion body and telescopic pipe reach sealing purpose, guarantee that telescopic pipe slides with respect to body and do not leak, but this scheme adopts compensation way to only limit to joint part, can not solve the Leakage of stuffing box itself.
For example [patent No.] CN201120324712.0, [title] a kind of Novel high-pressure valve stuffing box sealing structure, [notification number] CN202176814, this model utility relates to a kind of Novel high-pressure valve stuffing box sealing structure, comprise valve gap, valve rod, support, filler, Gland, filler is installed between valve gap and valve rod by Gland, mainly on Gland, in plane, to be shaped with several circular shrinkage hole, on the support above described circular shrinkage hole, be shaped with corresponding screw, construction bolt in described screw, bolt underpart top is contained on Gland in the circular shrinkage hole in plane.This model utility Gland is held out against filler downwards from support by bolt, filler impacting force is stable, the advantages such as Reliability of Packing Seal is reliable, but this scheme is applicable to gas leakage prevention, for preventing that oil plant from running out of aspect and can not play and well prevent that oil plant from revealing effect owing to lacking effective oil-scraping structure and assembly.
For example [patent No.] CN201020264480.X, [title] stuffing box packing assembly, [notification number] CN201723405, this model utility discloses a kind of stuffing box packing assembly, belong to compressor apparatus field, comprise several stuffing boxes, in each stuffing box, have 4 sealing units, each sealing unit is loaded on respectively in a stuffing box, and each sealing unit includes seal ring, restrictor ring, block ring, radial spring and axle spring; Described seal ring is respectively two, pintongs structure; Axle spring is positioned at every group of seal ring one side; The utility model is simple in structure, is easy to manufacture, and can effectively control the axial clearance between seal ring by axle spring; Meanwhile, the tension of radial spring, makes can carry out auto-compensation after seal wears, effectively prevents Leakage Gas.This same scheme is applicable to gas leakage prevention, lacks effective oil-scraping structure and assembly.
In sum, general packing case exists oil plant to reveal the problems such as serious, sealability is unstable, particularly under rugged environment, has the serious oily phenomenon of running.
Summary of the invention
Compressor packing letter seal arrangement object of the present utility model is to solve the oil plant that traditional compressor stuffing box exists to reveal the problems such as serious, sealability is unstable, provides that a kind of sealability is stable, the significant compressor packing letter of the oily effect of anti-race seal arrangement.
Compressor packing letter seal arrangement of the present utility model, comprise valve body and the gland that seals valve body one end, also comprise the scraper ring, baffle plate, seal ring and the spacer ring that are filled in valve inner, piston rod is through above-mentioned sealing component, and with each component close contact, the outside of seal ring and scraper ring is provided with axle spring; Described gland tooth mouth position is provided with oil wiper.
The oil wiper that establish in gland tooth mouth place is a scraper ring, and the outer radius of scraper ring and thickness mate with inside radius and the tooth open height of gland tooth mouth respectively just mutually.
Scraper ring external diameter is 65mm-67mm, and scraper ring thickness is 8mm-9mm, and gland tooth mouth internal diameter is 70mm-72mm, and tooth open height is 8mm-9mm.
In stuffing box, be from top to bottom filled with successively three groups of sealing units, every group of sealing unit is provided with in the side near valve interior wall the spacer ring that sealing unit is covered, and spacer ring separates sealing unit and valve body; Between each sealing unit, be provided with baffle plate; The assembly of described sealing unit is from top to bottom followed successively by two seal rings, two seal rings, two scraper rings.
The outer ring of every group of sealing unit is with radial spring.
Compressor packing letter seal arrangement of the present utility model is obtained good technique effect by such scheme: can effectively control the axial clearance between sealing unit by radial spring; Coordinate axle spring, can make to carry out auto-compensation after sealing unit component abrasion, effectively prevent oil plant leakage; The tooth mouth feature that makes full use of gland is established extra oil wiper, be equivalent on original basis, increase by one frizing operation, become Liao San road frizing from original twice frizing, this three process is not scraped front two procedures within excess oil clean and that left behind all got lodged in stuffing box, thereby has effectively stoped the oil of crankcase to be revealed to cylinder.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is the structural representation of compressor packing letter seal arrangement of the present utility model.
In figure, 1. valve body; 2. gland; 3. scraper ring; 4. frequency variator; 5. seal ring; 6. piston rod; 7. spacer ring; 8. oil wiper; 9. axle spring; 10. radial spring
Embodiment
As shown in Figure 1, compressor packing letter seal arrangement of the present utility model, comprise valve body 1 and the gland 2 that seals valve body one end, also comprise the scraper ring 3, baffle plate 4, seal ring 5 and the spacer ring 7 that are filled in valve body 1 inside, piston rod 6 is through above-mentioned sealing component, and with each component close contact, the outside of seal ring 5 and scraper ring 3 is provided with axle spring 9; Described gland 2 tooth mouth positions are provided with oil wiper 8.Working principle is to utilize the tight seal of snak link and scraper ring, makes its inner ring be close to piston rod and seals, and forbids that the oil of crankcase is revealed to cylinder along piston rod.
As to the illustrating further of above-mentioned oil wiper 8, the oil wiper that establish in gland 2 tooth mouth places is a scraper ring, and the radius of scraper ring 3 and thickness mate with inside radius and the tooth open height of gland tooth mouth respectively just mutually.Described seal ring can be two lobes or pintongs structure.
As the size to above-mentioned scraper ring and gland tooth mouth illustrate further, tooth open height is 8mm-9mm, tooth mouth internal diameter Φ 70mm-72mm, and scraper ring thickness is 8-9mm, scraper ring external diameter Φ 65mm-67mm, therefore a ring scraper ring just can be placed in the position, space of stuffing box gland.
This scraper ring increasing is just equivalent on original basis, increase by one frizing operation, become Liao San road frizing from original twice frizing, this three process is not scraped front two procedures within excess oil clean and that left behind all got lodged in stuffing box, thereby has effectively stoped the oil of crankcase to be revealed to cylinder.
As further illustrating structural relation between above-mentioned sealing component, in stuffing box, be from top to bottom filled with successively three groups of sealing units, every group of sealing unit is provided with in the side near valve interior wall the spacer ring 7 that sealing unit is covered, and spacer ring 7 separates sealing unit and valve body 1; Between each sealing unit, be provided with baffle plate 4; The assembly of described sealing unit is from top to bottom followed successively by two seal rings 5, two seal rings, two scraper rings 3.Total Axial Thermal gap of each sealing unit is 0.9mm-1.2mm.
More preferably, the outer ring of every group of sealing unit is with radial spring 10.Radial spring 10 can effectively be controlled the axial clearance between sealing unit; Coordinate axle spring 9, make can carry out auto-compensation after sealing unit component abrasion, effectively prevent oil plant leakage.
Three L8-60 type air compressors that the Guangxi 2# of Yu Feng cement limited company line cement grinding mill uses, the 5 monthly oily phenomenons of race that occurred in 2012, particularly the race of S3Z1U11 air compressor oil phenomenon was particularly serious.Utilize scheme of the present utility model to transform S3Z1U11 air compressor, learn from refueling to record, after having increased by a ring scraper ring, average every 17 days (50 classes) needs oiling 20kg, and before increase scraper ring, be that average 10 days (30 classes) needs oiling 20kg, the oily effect of anti-race of comparing is significant.Staff also carries out same transformation to other two L8-60 type air compressors afterwards, and proving effect is good and stable equally.
Claims (5)
1. a compressor packing letter seal arrangement, comprise valve body (1) and seal the gland (2) of valve body one end, also comprise and be filled in valve body (1) inner scraper ring (3), baffle plate (4), seal ring (5) and spacer ring (7), piston rod (6) is through above-mentioned sealing component, and with each component close contact, the outside of seal ring (5) and scraper ring (3) is provided with axle spring (9); It is characterized in that: described gland (2) tooth mouth position is provided with oil wiper (8).
2. compressor packing letter seal arrangement according to claim 1, it is characterized in that: the oil wiper that establish in gland (2) tooth mouth place is a scraper ring (3), the outer radius of scraper ring (3) and thickness mate with inside radius and the tooth open height of gland tooth mouth respectively just mutually.
3. compressor packing letter seal arrangement according to claim 2, is characterized in that: scraper ring (3) external diameter is 65mm-67mm, and scraper ring (3) thickness is 8mm-9mm, and gland (2) tooth mouth internal diameter is 70mm-72mm, and tooth open height is 8mm-9mm.
4. compressor packing letter seal arrangement according to claim 1, it is characterized in that: in stuffing box, be from top to bottom filled with successively three groups of sealing units, every group of sealing unit is provided with in the side near valve interior wall the spacer ring (7) that sealing unit is covered, and spacer ring (7) separates sealing unit and valve body (1); Between each sealing unit, be provided with baffle plate (4); The assembly of described sealing unit is from top to bottom followed successively by two seal rings (5), two seal rings (5), two scraper rings (3).
5. compressor packing letter seal arrangement according to claim 4, is characterized in that: the outer ring of every group of sealing unit is with radial spring (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320759116.4U CN203604152U (en) | 2013-11-26 | 2013-11-26 | Sealing device for compressor stuffing box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320759116.4U CN203604152U (en) | 2013-11-26 | 2013-11-26 | Sealing device for compressor stuffing box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203604152U true CN203604152U (en) | 2014-05-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320759116.4U Expired - Fee Related CN203604152U (en) | 2013-11-26 | 2013-11-26 | Sealing device for compressor stuffing box |
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| Country | Link |
|---|---|
| CN (1) | CN203604152U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104863826A (en) * | 2015-04-10 | 2015-08-26 | 广西鱼峰水泥股份有限公司 | Method for mounting stuffing boxes |
-
2013
- 2013-11-26 CN CN201320759116.4U patent/CN203604152U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104863826A (en) * | 2015-04-10 | 2015-08-26 | 广西鱼峰水泥股份有限公司 | Method for mounting stuffing boxes |
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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: 20140521 Termination date: 20181126 |