CN205298553U - Packing box subassembly that possesses removable letter mouth structure - Google Patents
Packing box subassembly that possesses removable letter mouth structure Download PDFInfo
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- CN205298553U CN205298553U CN201521137706.9U CN201521137706U CN205298553U CN 205298553 U CN205298553 U CN 205298553U CN 201521137706 U CN201521137706 U CN 201521137706U CN 205298553 U CN205298553 U CN 205298553U
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- letter
- annular flange
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- gland
- packing box
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Abstract
The utility model belongs to the sealed field of the pump body of displacement pump, concretely relates to packing box subassembly that possesses removable letter mouth structure. The utility model discloses a packing box, the packing box be used for the cover to establish letter hole appearance on the plunger to be the ladder poroid, and the large aperture section in this letter hole and the clearance between the plunger constitute the sealed clearance that is used for the intercalate to pack, the large aperture section place nose end that uses the letter hole is the letter mouth, and the department is equipped with the gland who is used for the axial to compress tightly the filler at the letter mouth, the coaxial annular flange that sets up is located to the letter mouth, and the fastening screw with the axial assembly between annular flange and letter mouth forms screw fastening between them cooperation, the interior anchor ring department of annular flange arranges the internal thread, and the gland appearance is the step shaft columnar structure that possesses the cavity lumen, set up in gland's the staff footpath section external screw thread with and the above -mentioned internal thread of annular flange between constitute screw -thread fit. The utility model discloses it is higher that efficiency is changed in the be convenient for quick replacement and the maintenance of on -the -spot part, the dismouting of subassembly, and the cost that the dismouting was maintained does and is effectively reduced.
Description
Technical field
This utility model belongs to the pump housing field of sealing technology of displacement pump, is specifically related to a kind of packing box assembly possessing removable letter mouth structure.
Background technology
Displacement pump refers to that the change utilizing pumping cylinder internal volume is to carry the pump of liquid, such as reciprocating pump, impeller pump etc. Displacement pump is widely used in the industries such as oil, chemical industry, pharmacy, food, metallurgy. Packing seal is the sealing means that displacement pump is the most frequently used, is generally made up of stuffing-box, filler and gland. Stuffing-box is sheathed on plunger and makes to exist between stuffing-box and plunger gap, and this gap forms the seal clearance for adding filler. Filler carrys out axial compression with the Screw assembly gland in stuffing-box end, shown in Fig. 1 and Fig. 2. Above-mentioned traditional structure in actual use, coordinates realize owing to the locking of gland fully relies on the direct screw threads for fastening between this gland with stuffing-box end; Once equipment has pulled above-mentioned screw thread under environment under high pressure in During Process of Long-term Operation, it is necessary for the replacing stuffing-box of entirety, not only to causing very big cost waste, the dismounting of whole stuffing-box simultaneously is also along with the synchronization dismounting of a large amount of accessories around, thus bringing very big inconvenience to the actual replacement operation of Field Force.
Summary of the invention
The purpose of this utility model is for overcoming above-mentioned the deficiencies in the prior art, a kind of rational in infrastructure and packing box assembly possessing removable letter mouth structure of practicality is provided, its quick-replaceable being easy to on-the-spot part and maintenance, the disassembling, assembling and replacing of assembly is in hgher efficiency, and the cost that dismounting is safeguarded also can effectively be reduced.
For achieving the above object, this utility model have employed techniques below scheme:
A kind of packing box assembly possessing removable letter mouth structure, including stuffing-box, stuffing-box is that ladder is poroid for the letter hole profile that is set on plunger, and the gap between large aperture section and the plunger in this letter hole constitutes the seal clearance for inserting filler;With section place, the large aperture nose end in letter hole for letter mouth, it is equipped with the gland for axial compression filler at letter mouth place; Described letter mouth place is coaxially disposed annular flange, forms both screw threads for fastening with the trip bolt axially assembled and coordinate between annular flange with letter mouth; The inner ring surface place of annular flange arranges female thread, and gland profile, in the multidiameter columnar structure possessing hollow tube chamber, the small axle diameter section of gland arranges external screw thread to be constituted threaded engagement between the above-mentioned female thread of annular flange.
The mating surface against letter mouth that is used for of annular flange is convexly equipped with annular projection, and between this annular projection with the annular recess preset on letter mouth, axially grafting coordinates to constitute seam.
On described annular flange, circumference is provided with six installing holes, and the matched place of letter mouth is coaxially disposed six screwed holes accordingly, and trip bolt penetrates in installing hole and coordinates with constituting screw threads for fastening between screwed hole.
Described annular flange internal diameter is equal to the large aperture section internal diameter in letter hole.
Going back screw thread in the small axle diameter section of gland and be connected with the locking nut for playing mechanical locking effect, locking nut is axially against the other end end of the relative engagement letter mouth in annular flange.
The beneficial effects of the utility model are in that:
1), by newly-increased can the letter mouth associate member of screw thread reassembling type, thus the direct threaded engagement between script letter mouth and gland being constructed, be changed into that letter mouth coordinates annular flange and annular flange coordinates the multiple axial fixing structure of gland again. After cause the ridge between annular flange and gland to damage because of factors such as mechanical vibration or piston reciprocation travelings, only need the annular flange easily more renewed. This utility model, without integral demounting stuffing-box, it also avoid the replacement cost caused because of the replacing of whole stuffing-box and sharply increases situation, and can synchronize to meet quick-replaceable and the maintenance needs of on-the-spot part; The disassembling, assembling and replacing of assembly is in hgher efficiency, and the cost that dismounting is safeguarded also can effectively be reduced.
2), actually, due to above-mentioned using annular flange relatively smaller for volume as changing part, even it is contemplated that annular flange directly adopts the material of higher material make during use, to promote its actual life and to extend traditional member replacing interval. Certainly, owing to again without changing stuffing-box, therefore also directly better material can be adopted to make whole stuffing-box, further to promote functional reliability and the actual life of whole packing seal structure. It also can be multiple for limiting as the concrete profile of gland, as directly adopted the gland etc. of sleeve-shaped, need to meet while can being socketed on plunger and pushing against filler, possesses and threaded engagement ability between annular flange.
3) the seam fit structure, between annular flange and letter mouth, contributes to promoting actual installation efficiency. When carrying out installing operation, only axial for annular flange need to be fitted into letter mouth place, utilize its seam to coordinate and directly engage. And screw thread between annular flange with above-mentioned letter mouth is affixed coordinates, then further improve cooperation reliability between the two. Annular flange internal diameter is equal to the large aperture section internal diameter in letter hole, in short, when adopting structure of the present utility model to carry out the update to existing equipment, gland can directly continue to use traditional old structure, it is not necessary to again produces the gland of new size. By in the way of annular flange adapts to gland rather than gland adapts to annular flange, it is clear that being more conducive to the requirement that quickly updates of this equipment, the update cost of equipment also can effectively be reduced.The layout of locking nut, above-mentioned annular flange of arranging in pairs or groups, thereby through machinery pretightning force, effectively realize the reliably working requirement of gland.
Accompanying drawing explanation
Fig. 1 is the assembling schematic diagram of traditional packing seal structure;
Fig. 2 is the structural representation of the stuffing-box of Fig. 1;
Fig. 3 is assembling schematic diagram of the present utility model;
Fig. 4 is the I part partial enlarged drawing of Fig. 3;
Fig. 5 is the structural representation of annular flange.
Illustrate each label as follows with concrete component names corresponding relation of the present utility model:
10-stuffing-box 11-letter mouth
20-plunger 30-filler 40-gland
50-annular flange 51-trip bolt 52-annular projection
60-locking nut
Detailed description of the invention
For ease of understanding, here in connection with Fig. 3-5, the structure that is embodied as of the present utility model is made described further below:
Before described, it should be noted that: the large aperture section in aforesaid letter hole, a section that to be in two hole sections in ladder poroid letter hole relative internal diameter bigger, otherwise in like manner. Same, the small axle diameter section of gland 40, be that in two shaft parts of ladder shaft-like gland, opposite outside diameter is less one section.
Concrete assembling structure of the present utility model is as it is shown on figure 3, collectively constituted by plunger 20, gland 40, locking nut 60, annular flange 50, trip bolt 51, stuffing-box 10, filler 30. Plunger 20 be unique in stuffing-box 10 along letter hole reciprocating part, its outer surface needs to rely on filler 30 effectively to seal, in case the dielectric leakage in pump chamber. Gland 40 is the parts carrying out axial compression filler 30 by rotating screw thread, its small axle diameter section is arranged external screw thread the female thread with annular flange 50 inner ring surface place closely cooperate. Annular flange 50 is then with axial seam fit system, and is axially fixed at letter mouth 11 place of stuffing-box 10 with trip bolt 51, to realize its dismantled and assembled requirement easily. Locking nut 60 for prevent gland 40 from loosening and threaded engagement in the small axle diameter section of above-mentioned gland 40.
Annular flange 50 is as core part of the present utility model, as illustrated in figures 4-5, it by secure engagement between the letter mouth of trip bolt 51 and stuffing-box 10, is closely cooperated by the external screw thread of the female thread of inner ring surface Yu the small axle diameter section of gland 40 on the one hand on the other hand. When equipment is in environment under high pressure continuous operation a period of time, and when occurring the threaded engagement between annular flange 50 and gland 40 to lose efficacy, have only to directly change this annular flange 50, thus avoiding the inconvenience that the whole stuffing-box 10 of traditional necessary integral replacing brings, so not only greatly save cost, more bring very big operation convenient to site operation personnel. The fastening structure of trip bolt 51, then with layout installing hole on annular flange 50, corresponding letter mouth 11 place arranges that the structural form of screwed hole realizes. During concrete operations, it is contemplated that installing hole is designed as shoulder hole structure, with reference to shown in Fig. 5, so that the nut portion of trip bolt 51 sinks in annular flange 50, and provide locking nut 60 with the abutment face of opposed flattened in the end of annular flange 50.
Claims (5)
1. the packing box assembly possessing removable letter mouth structure, including stuffing-box (10), the letter hole profile being used for being set on plunger (20) of stuffing-box (10) is that ladder is poroid, and the gap composition between the large aperture section in this letter hole and plunger (20) is used for inserting the seal clearance of filler (30);With section place, the large aperture nose end in letter hole for letter mouth (11), it is equipped with the gland (40) for axial compression filler (30) at letter mouth (11) place; It is characterized in that: described letter mouth (11) place is coaxially disposed annular flange (50), form both screw threads for fastening with the trip bolt (51) axially assembled between annular flange (50) with letter mouth (11) and coordinate; The inner ring surface place of annular flange (50) arranges female thread, gland (40) profile, in the multidiameter columnar structure possessing hollow tube chamber, the small axle diameter section of gland (40) is arranged and is constituted threaded engagement between the external screw thread above-mentioned female thread with annular flange (50).
2. a kind of packing box assembly possessing removable letter mouth structure according to claim 1, it is characterized in that: annular flange (50) for being convexly equipped with annular projection (52) against the mating surface of letter mouth (11), between this annular projection (52) with the upper annular recess preset of letter mouth (11), axial grafting coordinates to constitute seam.
3. a kind of packing box assembly possessing removable letter mouth structure according to claim 1, it is characterized in that: the upper circumference of described annular flange (50) is provided with six installing holes, the matched place of letter mouth (11) is coaxially disposed six screwed holes accordingly, and trip bolt (51) penetrates in installing hole and coordinates with constituting screw threads for fastening between screwed hole.
4. a kind of packing box assembly possessing removable letter mouth structure according to claim 1 or 2 or 3, it is characterised in that: described annular flange (50) internal diameter is equal to the large aperture section internal diameter in letter hole.
5. a kind of packing box assembly possessing removable letter mouth structure according to claim 1 or 2 or 3, it is characterized in that: going back screw thread in the small axle diameter section of gland (40) and be connected with the locking nut (60) for playing mechanical locking effect, locking nut (60) is axially against the other end end of relative engagement letter mouth (11) in annular flange (50).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521137706.9U CN205298553U (en) | 2015-12-30 | 2015-12-30 | Packing box subassembly that possesses removable letter mouth structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521137706.9U CN205298553U (en) | 2015-12-30 | 2015-12-30 | Packing box subassembly that possesses removable letter mouth structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205298553U true CN205298553U (en) | 2016-06-08 |
Family
ID=56470371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521137706.9U Active CN205298553U (en) | 2015-12-30 | 2015-12-30 | Packing box subassembly that possesses removable letter mouth structure |
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| Country | Link |
|---|---|
| CN (1) | CN205298553U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019037709A1 (en) * | 2017-08-21 | 2019-02-28 | 电化江玲久斗论株式会社 | Cable gland |
-
2015
- 2015-12-30 CN CN201521137706.9U patent/CN205298553U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019037709A1 (en) * | 2017-08-21 | 2019-02-28 | 电化江玲久斗论株式会社 | Cable gland |
| CN109428295A (en) * | 2017-08-21 | 2019-03-05 | 电化江玲久斗论株式会社 | Cable stuffing-box |
| CN109428295B (en) * | 2017-08-21 | 2021-08-10 | 电化江玲久斗论株式会社 | Cable stuffing box |
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| GR01 | Patent grant |