CN2833263Y - Self-compensating packing seal structure - Google Patents
Self-compensating packing seal structure Download PDFInfo
- Publication number
- CN2833263Y CN2833263Y CN 200520128177 CN200520128177U CN2833263Y CN 2833263 Y CN2833263 Y CN 2833263Y CN 200520128177 CN200520128177 CN 200520128177 CN 200520128177 U CN200520128177 U CN 200520128177U CN 2833263 Y CN2833263 Y CN 2833263Y
- Authority
- CN
- China
- Prior art keywords
- packing
- seal structure
- gland
- axle
- self compensation
- 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
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Abstract
The utility model discloses a self-compensating packing seal structure which comprises a shaft (or a rod), a packing box, a packing gland, a packing filler and an elastic extruding device, wherein an inner cavity of the packing box forms a tapered shape, and the shape of the gland filler is matched with the shape of the inner cavity; the elastic extruding device is positioned between the packing filler and the gland, the packing gland and the packing box are tightly screwed with each other, and the packing filler is extruded to deform through a pressing spring to tightly envelop the shaft to carry out a seal. The inner cavity of the packing box of the utility model, when the gland is tightly screwed, the packing filler has the tendency of retracting inwards to compensate the shortage of the deformation of packing, and the sealing effect can be improved thereby. The elastic extruding device can store a definite pressure in advance so as to continuously apply pressure to the packing filler to continuously compensate the friction deformation of the packing to realize an effective shaft seal; consequently, the manual screwing frequency can be decreased. The utility model has the advantages of uniform enveloping force, stable sealing performance, high utilizing rate of the packing, etc.
Description
Technical field
The utility model relates to a kind of sealing configuration, a kind of more precisely packing_seal structure with self compensation function.
Background technique
Packing_seal is a kind of sealing configuration commonly used, from the function branch static seal and this two big class of motive sealing are arranged, from the material branch carbon graphite packing, asbestos packing, teflon packing or the like ten polytypes are arranged, these packings structurally mostly as shown in Figure 1, mainly form by axle 1, packing filling 2, packing box 3 and packing gland 4, its working principle is: push by screwing 4 pairs of packing fillings 2 of packing gland, make its distortion and hold axle 1 tightly, thereby reach the purpose of sealing.The major defect of this structure just is: 1, owing to be by the packing filling compressive deformation axle to be sealed, therefore in use for some time, friction can make deformation fade away, cause seal failure, have only to screw gland 4 once more and make it compress filler once more to produce new deformation and could continue to use, need manually intervention to adjust, complex operation and influence the normal operation of equipment not only, before finding seal failure, the instability that its sealability is suitable very easily becomes accident potential; 2, because need consider sealing when screwing, so its pressure that begins and distortion are generally all very big, cause frictional force excessive, and motion consumes more power and do not say that fricative heat can not get dispersing timely also and can damage packing mutually; 3, when packing box 3 and packing gland 4 can't continue to screw, the packing that can only more renew just, the effective rate of utilization of packing is low, causes very big waste, and each seal failure all can have crude oil or the ejection of other liquid, causes the pollution of equipment and environment.
The model utility content
At the deficiencies in the prior art, the purpose of this utility model is to provide a kind of packing_seal structure with self compensation function, the sealing structure in use need not manually to carry out frequent adjustment, and the power of holding tightly is even, sealability stable, packing utilization ratio height.
For achieving the above object, the technical solution adopted in the utility model is: a kind of self compensation packing_seal structure, comprise axostylus axostyle, packing box, packing gland, packing filling and elastic squeezing unit, the packing box inner chamber is tapered, the shape of packing filling is suitable with it, elastic squeezing unit is between packing filling and packing gland, and packing gland and packing box screw mutually and hold axle tightly sealing by the distortion of stage clip extruding packing filling.
Described elastic squeezing unit is a stage clip, and this compression spring sleeve is contained on the axle.
Be provided with the packing pressing plate between described stage clip and the packing filling, the pressing plate middle part offers the through hole that passes for axle.
Described pressing plate size is suitable with packing filling upper surface and packing box internal diameter.
Described pressing plate is rounded.
Be respectively arranged with axle sleeve between described packing box, packing gland and the axle.
The outer peripheral surface of described axle sleeve is provided with and is used for the convex annular edge spacing at the axis hole place.
Axle sleeve between described packing gland and the axle stretches into stage clip inner ring certain distance, and stage clip and its convex annular are along leaning.
Described axle sleeve is made by teflon or other high-abrasive materials.
The inner chamber of the utility model packing box is tapered, and packing filling can have the trend of inside indentation when screwing gland, and the deficiency with the deformation of compensation packing improves sealing effect.Stage clip between packing filling and packing gland can store certain pressure in advance, so that to exerting pressure that packing filling continues, the constantly friction deformation of compensation packing, realize effective shaft sealing, thereby reducing the people is the number of times that screws, and improves the utilization ratio of packing, in addition, the all right compensator or trimmer pressure of stage clip, the deformation of adjusting packing, the power consumption of avoiding the spinning tension to cause.The axle sleeve that is provided with between packing box, packing gland and axle then has very high selflubricating and antiwear property, has avoided direct collision and friction between the two, and not only operating steadily also can prolong its working life.
Description of drawings
Fig. 1 is the schematic representation of existing packing_seal structure;
Fig. 2 is the schematic representation of the utility model self compensation packing_seal structure.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
As shown in Figure 2, self compensation packing_seal structure of the present utility model is mainly by axle 10, packing box 11, packing gland 12, packing filling 13 and stage clip 14 constitute, the taper that the inner chamber of packing box 11 is big up and small down, the shape of packing filling 13 is suitable with it, size is slightly larger than the conical internal cavity of packing box 11, just shape thereupon after packing into, so that obtain required sealing load, stage clip 14 between packing filling 13 and the packing gland 12 and be sleeved on the axle 10 on, between stage clip 14 and packing filling 13, be provided with packing pressing plate 15, pressing plate 15 is rounded, its size is suitable with the upper surface of packing filling 13, the middle part offers for axle 1 through hole that passes, packing gland 12 and packing box 11 screw mutually by screw thread, and push packing fillings 13 distortion by stage clip 14 and pressing plate 15 axle 1 is held tightly, realize sealing, between packing box 11 and axle 1, be respectively arranged with axle sleeve 16, between packing gland 12 and axle 1, be provided with axle sleeve 17, axle sleeve 16,17 outer peripheral surface is provided with the convex annular edge that is used in chucking location, axis hole place, one end of axle sleeve 17 stretches in the inner ring of stage clip 14, stage clip 14 leans axle sleeve 16 with its convex annular edge, 17 make by polytetrafluoroethylmaterial material.
The utility model is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present invention; for example adopt other elastic devices to replace stage clip; or pressing plate is made other suitable shapes; or axle sleeve adopts other materials to make; though but on its shape or structure, do any variation, every packing box has conical internal cavity and is provided with the packing_seal structure of elastic energy storage squeezing unit, all drops within the protection domain of the present utility model.
Claims (10)
1, a kind of self compensation packing_seal structure, it is characterized in that, comprise axle, packing box, packing gland, packing filling and elastic squeezing unit, the packing box inner chamber is tapered, the shape of packing filling is suitable with it, elastic squeezing unit is between packing filling and packing gland, and packing gland and packing box screw mutually and hold axle tightly sealing by the distortion of stage clip extruding packing filling.
2, self compensation packing_seal structure according to claim 1 is characterized in that, described elastic squeezing unit is a stage clip, and this compression spring sleeve is contained on the axle.
3, self compensation packing_seal structure according to claim 2 is characterized in that, is provided with the packing pressing plate between described stage clip and the packing filling, and the pressing plate middle part offers the through hole that passes for axle.
4, self compensation packing_seal structure according to claim 3 is characterized in that, described pressing plate size is suitable with the packing filling upper surface.
5, self compensation packing_seal structure according to claim 4 is characterized in that described pressing plate is rounded.
6, according to the arbitrary described self compensation packing_seal structure of claim 1 to 5, it is characterized in that, be respectively arranged with axle sleeve between the rounded described packing box of described pressing plate, packing gland and the axle.
7, self compensation packing_seal structure according to claim 6, the outer peripheral surface of described axle sleeve are provided with the convex annular edge that is used in chucking location, axis hole place.
8, self compensation packing_seal structure according to claim 7, the axle sleeve between described packing gland and the axle stretches into stage clip inner ring certain distance, and stage clip and its convex annular are along leaning.
9, self compensation packing_seal structure according to claim 8, described axle is a center-pole.
10, self compensation packing_seal structure according to claim 9, described axle sleeve is made by polytetrafluoroethylmaterial material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520128177 CN2833263Y (en) | 2005-10-28 | 2005-10-28 | Self-compensating packing seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520128177 CN2833263Y (en) | 2005-10-28 | 2005-10-28 | Self-compensating packing seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2833263Y true CN2833263Y (en) | 2006-11-01 |
Family
ID=37197576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520128177 Expired - Fee Related CN2833263Y (en) | 2005-10-28 | 2005-10-28 | Self-compensating packing seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2833263Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500383A (en) * | 2014-11-20 | 2015-04-08 | 徐承韬 | Plunger pump sealing device |
| CN105090504A (en) * | 2015-08-31 | 2015-11-25 | 成都欧林生物科技股份有限公司 | Improved sealing device structure capable of preventing air leakage at detection opening |
| CN105937380A (en) * | 2016-07-14 | 2016-09-14 | 哈尔滨理工大学 | Automatic-compensating sealing packing box |
| CN106085467A (en) * | 2016-08-16 | 2016-11-09 | 山东钢铁股份有限公司 | A kind of burnt dust guard of coke dry quenching furnace dress |
| CN106762599A (en) * | 2016-12-08 | 2017-05-31 | 成都格瑞思文化传播有限公司 | Blower pump |
| CN107387391A (en) * | 2017-07-25 | 2017-11-24 | 盐城美希密封件有限公司 | A kind of static seal device of auto pump |
-
2005
- 2005-10-28 CN CN 200520128177 patent/CN2833263Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500383A (en) * | 2014-11-20 | 2015-04-08 | 徐承韬 | Plunger pump sealing device |
| CN105090504A (en) * | 2015-08-31 | 2015-11-25 | 成都欧林生物科技股份有限公司 | Improved sealing device structure capable of preventing air leakage at detection opening |
| CN105937380A (en) * | 2016-07-14 | 2016-09-14 | 哈尔滨理工大学 | Automatic-compensating sealing packing box |
| CN105937380B (en) * | 2016-07-14 | 2018-11-09 | 哈尔滨理工大学 | Automatic compensation sealing packing box |
| CN106085467A (en) * | 2016-08-16 | 2016-11-09 | 山东钢铁股份有限公司 | A kind of burnt dust guard of coke dry quenching furnace dress |
| CN106762599A (en) * | 2016-12-08 | 2017-05-31 | 成都格瑞思文化传播有限公司 | Blower pump |
| CN107387391A (en) * | 2017-07-25 | 2017-11-24 | 盐城美希密封件有限公司 | A kind of static seal device of auto pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |