CN2191319Y - Cap pressed type packing unit - Google Patents
Cap pressed type packing unit Download PDFInfo
- Publication number
- CN2191319Y CN2191319Y CN 94225195 CN94225195U CN2191319Y CN 2191319 Y CN2191319 Y CN 2191319Y CN 94225195 CN94225195 CN 94225195 CN 94225195 U CN94225195 U CN 94225195U CN 2191319 Y CN2191319 Y CN 2191319Y
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- CN
- China
- Prior art keywords
- oil
- filler
- axle sleeve
- spring
- filling
- 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 relates to contact type moving sealing device. A shaft sleeve is fixed to the inner part of a static filling box, an oil chamber is arranged on an external circle of the shaft sleeve, a plurality of oil holes which are communicated with the oil chamber are arranged on an inner circle of the shaft sleeve, and the pipe wire bores on the filling box is also communicated with the oil chamber. A working impeller, a base ring, a plurality of circles of filling materials, a pressing cover, a spring, a spring base and nuts are arranged on a rotating shaft from internal to external in turn, and each component can be axially and mutually press and can be fixed on the shaft by tightening the nuts. So the filling material can be axially and tightly pressed with the inner bores of the shaft sleeve for realizing a required sealing pressure and forming a cylindrical surface which can slide correspondingly. The lubricating oil with the oil pressure of 0.1-0.3Mpa, which is provided by a pressure oil filling machine can lubricate and cool the filling material through the pipe wire bores on a material filling box, the oil chamber and the oil bores; so the filling material can be kept with a long service life. Therefore, the long-term and reliable sealing effect of the utility model can be obtained.
Description
The utility model relates to the contact-type dynamic seal apparatus.
Gland type packing seal (being commonly called as packing) is one of original movable sealing structure, because it is simple in structure, cheap, widely applicable, certain sealing effect is arranged, still is widely used in the every profession and trade so far.Its basic structure is as shown in Figure 1: axle and axle sleeve rotate, it is static that Stuffing box and inside thereof are glanded the filler and the dosing ring that are compressed, the excircle of axle sleeve and the inner circumference of filler are the cylndrical surface of slide relative, the oiling agent of introducing by the dosing ring makes the cylndrical surface of slide relative obtain lubricated and cooling, alleviating the wearing and tearing of filler and axle sleeve, thereby keep necessary sealing load.The excessive pressure P of radially contact pressure Pr 〉=medium between innermost layer filler and axle sleeve surface
Be situated betweenThe time, can keep sealing effect.The major defect of this sealing is: the filler quick abrasion, life-span is short, need often compress filler, often change filler and axle sleeve and could keep sealing effect, otherwise medium can enter the slide relative face under pressure, especially will speed up the wearing and tearing of filler and axle sleeve when containing solid particle in the medium, loses sealing effect gradually, and it is time-consuming to change the filler effort, needs the filler in the dosing ring and the outside thereof is all drawn out and is pressed into again in narrow Stuffing box; Compress filler and change filler and axle sleeve must stop and carries out, it is many to take dead time, to produce disturb big; When the dosing ring is in the most inboard position, oiling agent will lose the lubricated and cooling to filler, quicken the wearing and tearing and the leakage of oil of filler, and make oiling agent (oil or water) enter flow process in a large number, and this is that institute is unallowed on some industry technology.
The purpose of this utility model provides a kind of gland type stuffing seal of new structure, and the sealing device can keep good and stable sealing effect for a long time, does not need often to compress filler and does not need often to change easily consumption part such as filler and axle sleeve; Compress with additional fillers also easily, laborsavingly save time again; Operation rate is significantly improved,, reduced the manpower and financial resources consumption of maintenance again for advantage has been created in production.The utility model makes soft packing seal obtain new vitality, and its performance and benefit can compare favourably with other advanced sealing configurations.
Gland type seal arrangement of the present utility model is made up of members such as Stuffing box, axle sleeve, base ring, filler, gland, spring, spring seat and nuts, is characterized in:
Axle sleeve is fixed on the static Stuffing box, and filler is compacted and be fixed on the spindle nose of rotation by parts such as round nut, spring, glands, and the excircle of filler and the inner circumference of axle sleeve contact and constitute the cylndrical surface of slide relative.
One end of axle sleeve is provided with flange, screw is arranged on the flange, sleeve outer circle week is provided with circular groove at the two ends of length direction, built-in ring, its stage casing is provided with annular oil cavity, is provided with 2～4 round oilholes in the length range of oil pocket, this oilhole is the cone expansion hole greater than 120 degree angles on the circumferencial direction of axle sleeve internal circular surfaces, be one section groove in the longitudinal direction, the axle sleeve internal surface is through cure process, hardness 〉=52Rc.
Establish pipe thread hole on the Stuffing box shell, the outside of pipe thread hole links through oil pipe and compression grease cup, and its inboard communicates with the oil pocket in sleeve outer circle week.
The most inboard at spindle nose outwards is provided with base ring, a few fillers, gland, spring, spring seat and 2 round nuts from running wheel (rotor), makes above-mentioned part axially compress mutually and be fixed on the spindle nose by screwing 2 round nuts.In spindle nose and length that filler matches, the spindle nose external peripheral surface is provided with several vertical grooves.
Filler is that self lubricity is good, and friction factor is little, mechanical strength height, the teflon fibre braided stuffing box packing that corrosion resistance is strong.
Oil pressure P=0.1～the 0.3MPa of the compression grease cup that links with pipe thread hole on the Stuffing box.
The utility model has been compared following advantage and economic benefit with original gland type packing seal:
1. owing to created good condition and selected the quality seal filler for use for the lubricated of filler from structure, under enough impacting force effects, filler can have the very long life-span, can obtain long-time stablizing and reliable sealing effect.Do not need often to change filler and spare part.
2. the wearing and tearing of filler trace, spring force can compress filler automatically, reaches required pressure, does not need often to tighten gland bolt.
3. it is very easy to add new filler, need not draw out dosing ring and whole filler, only needs to add a few fillers in the outside and gets final product.
4. by above-mentioned reason, adjust and significantly reduce the dead time that takies with maintenance, operation rate greatly improves, for advantage has been created in production.And saving mass filler and the consumption of spare part and the consumption of manpower.
5. new structure of the present utility model can compare favourably its performance and benefit with advanced configuration such as mechanical seals for ancient soft packing seal provides new vitality.Except that having kept simple in structure, advantages such as technical requirements is low, low cost, add advantages such as to go up sealing effect reliable, and the life-span is longer, and is easy to install again.
6. the utility model is used to have the motive sealing of solid particle medium, and during as slurry pump, reactor etc., effect is more obvious.
The utility model embodiment is described in detail as follows:
Fig. 2 is the utility model main sectional view of (being used for the slurry pump motive sealing).
Fig. 3 is A～A sectional view of Fig. 2.
Axle sleeve 5 is housed in Stuffing box 7, fixes with bolt 13 and nut 14 flange and Stuffing box with axle sleeve 5.Two ends at axle sleeve 5 excircles are provided with circular groove 16, interior dress rubber seal 3, and the stage casing of axle sleeve 5 excircles is provided with annular oil cavity 17, and this oil pocket communicates with the pipe thread hole 8 of Stuffing box.And the outside of pipe thread hole 8 links by oil pipe and compression grease cup.This compression grease cup is the patented product of another part standardized production, and the oil pressure that is provided is 0.1～0.3MPa.Be provided with 2～4 round oilholes in the length range of oil pocket 17, this oilhole is the cone expansion hole greater than 120 degree angles on the circumferencial direction of axle sleeve internal circular surfaces, and is one section groove in the longitudinal direction.Axle sleeve 5 internal surfaces are through cure process, and hardness is greater than 52Rc.
Axle 1 is the cantilevered axle of slurry pump, and its front end is equipped with running wheel, and base ring 2 outwards is housed successively, a few fillers 4, gland 9, spring 10, spring seat 11, gland nut 12, lock nut 13.By fastening nut 12 and 13, make above-mentioned a series of part axially compress mutually and be fixed on the axle 1, the excircle of filler 4 and the inner circumference of axle sleeve 5 are radially being compressed mutually, form the cylndrical surface 15 of slide relative, this cylndrical surface 15 is in the excessive pressure P of the most inboard radial pressure Pr 〉=medium
Be situated betweenThe time, can keep the motive sealing effect.On axle 1 external peripheral surface and the contacted length of filler, be provided with several vertical grooves, to prevent producing slide relative between filler and axle surface.
Claims (6)
1, a kind of gland type stuffing seal is made up of parts such as Stuffing box, axle sleeve, base ring, filler, gland, spring, spring seat and nuts, it is characterized in that: axle sleeve is fixed on the static Stuffing box, and filler is by parts such as round nut, spring, glands and compacted and be fixed on the spindle nose of rotation, and the excircle of filler and the inner circumference of axle sleeve contact and constitute the cylndrical surface of slide relative.
2, press claim 1 described seal arrangement, it is characterized in that axle sleeve one end is provided with flange, has screw on the flange.Sleeve outer circle week be provided with circular groove and be used to adorn seal ring at the two ends of length direction, its stage casing is provided with annular oil cavity, in the length range of oil pocket, be provided with 2～4 oilholes, this oilhole is the cone expansion hole greater than 120 degree angles on the circumferencial direction of axle sleeve internal circular surfaces, and is one section groove in the longitudinal direction.The axle sleeve internal surface is through cure process, hardness 〉=52Rc.
3, press claim 1 described seal arrangement, it is characterized in that the shell of described Stuffing box is provided with pipe thread hole, the outside of pipe thread hole links through oil pipe and compression grease cup, and the inboard of pipe thread hole communicates with the oil pocket in sleeve outer circle week.
4, press claim 1 described seal arrangement, running wheel is equipped with in the inner end that it is characterized in that described spindle nose, base ring, a few fillers, gland, spring, spring seat and 2 nuts outwards are housed successively, by screwing 2 nuts, make above-mentioned part axially compress mutually and be fixed on the spindle nose, in spindle nose and length that filler matches, the spindle nose external peripheral surface is provided with several vertical grooves.
5, press claim 1 described seal arrangement, it is characterized in that filler is teflon fibre braided stuffing box packing.
6, press claim 1 described seal arrangement, it is characterized in that with the Stuffing box shell on the oil pressure P=0.1～0.3MP of the compression grease cup that links of pipe thread hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94225195 CN2191319Y (en) | 1994-01-27 | 1994-01-27 | Cap pressed type packing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94225195 CN2191319Y (en) | 1994-01-27 | 1994-01-27 | Cap pressed type packing unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2191319Y true CN2191319Y (en) | 1995-03-08 |
Family
ID=33838442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94225195 Expired - Fee Related CN2191319Y (en) | 1994-01-27 | 1994-01-27 | Cap pressed type packing unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2191319Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005714A (en) * | 2010-10-22 | 2011-04-06 | 江苏天力电气有限公司 | Cable sealing device for buried transformer |
| CN102644742A (en) * | 2012-04-27 | 2012-08-22 | 大连华阳光大密封有限公司 | Mechanical seal for packing sealing cavity |
| CN102734467A (en) * | 2012-06-14 | 2012-10-17 | 山东鼎泰盛食品工业装备股份有限公司 | Sealing device for delivery shaft of water tank of continuous sterilizer |
| CN104896097A (en) * | 2015-05-13 | 2015-09-09 | 刘卫东 | Muddy shaft seal |
| CN106704563A (en) * | 2016-11-17 | 2017-05-24 | 中国船舶重工集团公司第七0研究所 | Internal and external pressure balance type rotation movable sealing device |
| CN107638710A (en) * | 2017-09-22 | 2018-01-30 | 南通联源机电科技股份有限公司 | A kind of Potash Industry crystallizer of agitating shaft water-stop |
| CN110702288A (en) * | 2019-10-17 | 2020-01-17 | 天津大学 | Packing sealing contact pressure measuring device and method |
| CN111237463A (en) * | 2020-02-18 | 2020-06-05 | 江苏丰尚智能科技有限公司 | Shaft end sealing mechanism |
-
1994
- 1994-01-27 CN CN 94225195 patent/CN2191319Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005714A (en) * | 2010-10-22 | 2011-04-06 | 江苏天力电气有限公司 | Cable sealing device for buried transformer |
| CN102005714B (en) * | 2010-10-22 | 2012-07-25 | 江苏天力电气有限公司 | Cable sealing device for buried transformer |
| CN102644742A (en) * | 2012-04-27 | 2012-08-22 | 大连华阳光大密封有限公司 | Mechanical seal for packing sealing cavity |
| CN102734467A (en) * | 2012-06-14 | 2012-10-17 | 山东鼎泰盛食品工业装备股份有限公司 | Sealing device for delivery shaft of water tank of continuous sterilizer |
| CN104896097A (en) * | 2015-05-13 | 2015-09-09 | 刘卫东 | Muddy shaft seal |
| CN106704563A (en) * | 2016-11-17 | 2017-05-24 | 中国船舶重工集团公司第七0研究所 | Internal and external pressure balance type rotation movable sealing device |
| CN107638710A (en) * | 2017-09-22 | 2018-01-30 | 南通联源机电科技股份有限公司 | A kind of Potash Industry crystallizer of agitating shaft water-stop |
| CN110702288A (en) * | 2019-10-17 | 2020-01-17 | 天津大学 | Packing sealing contact pressure measuring device and method |
| CN110702288B (en) * | 2019-10-17 | 2021-08-20 | 天津大学 | Packing sealing contact pressure measuring device and method |
| CN111237463A (en) * | 2020-02-18 | 2020-06-05 | 江苏丰尚智能科技有限公司 | Shaft end sealing mechanism |
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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 |