CN203500467U - Sealing device of screw extruder - Google Patents
Sealing device of screw extruder Download PDFInfo
- Publication number
- CN203500467U CN203500467U CN201320628899.2U CN201320628899U CN203500467U CN 203500467 U CN203500467 U CN 203500467U CN 201320628899 U CN201320628899 U CN 201320628899U CN 203500467 U CN203500467 U CN 203500467U
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- Prior art keywords
- screw extruder
- sealing
- seal ring
- seal
- ring
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- Expired - Fee Related
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model provides a sealing device of a screw extruder. The sealing device of the screw extruder comprises a sealing ring, a sealing shell and an adjusting bolt. The sealing ring is arranged inside the sealing shell and composed of multiple sealing semi-rings. A screw shaft of the screw extruder is sleeved with the sealing ring. The adjusting bolt is installed through a radial threaded hole in the sealing shell, penetrates through the sealing shell and makes contact with the sealing ring. The sealing shell is fixed to the screw extruder. The sealing device of the screw extruder can be adjusted and sealed online and is simple in structure, easy to assemble and disassemble and long in service life.
Description
Technical field
The utility model relates to the sealing technique of fluid, relates more specifically to the stuffing seal of screw extruder.
Background technique
Screw extruder can be used for conveying high-pressure and higher full-bodied flowing medium, and such as the Plastic medium of supercharging melting, when temperature is high, air flowability is good, and when temperature is low, viscosity is very high, and shearing force is very large.Fluid in screw extruder has larger pressure, need to take measures to prevent that fluid is from the position leakage that is rotatably connected.The screw extruder packing seal having had at present has more following forms and feature:
1 reverse thread groove: process thread groove on screw axis or on packing ring, thread groove direction is contrary with screw axis sense of rotation, and when screw axis rotates, thread groove is shifted extrusion press inboard onto material, stops and leaks.The shortcoming of this form is that maintenance replacing seal operation amount is large, can not adjust online, and when screw axis does not rotate, sealing is easily leaked;
2 wire packings: compress wire packing by axial force, change its radial dimension, wire packing and screw axis are compressed, reach sealing effect.The shortcoming of this form is that sealing is easily leaked, and the life-span is short;
The lobe of group more than 3 adds spring: by a lot of sealing blocks, form seal ring, and outer ring spring clamp, and sealing block and screw axis are compressed, form sealing.The shortcoming of this form is that the plastic medium of melting can stick together a lot of little sealing flaps and spring, causes sealing mechanism to lose efficacy, and can not adjust online, and sealing is easily leaked, and sealing life is short;
4 mechanical seals: the rubbing surface forming by dynamic and static ring, stops material from leakage.The shortcoming of this form is complex structure, and during cold conditions, plastic medium can stick together sealing surface, and sealing mechanism lost efficacy.
Visible, the ubiquitous problem of existing packing seal is that while producing the product of low-viscosity, seal leakage amount is large, can not adjust online, and it is large that seal operation amount is changed in maintenance, and service life is short.
Summary of the invention
The purpose of this utility model is to provide that a kind of simple in structure, service life is long, the seal arrangement of the screw extruder that can adjust online.
For achieving the above object, the seal arrangement of screw extruder of the present utility model comprises seal ring 1, can 2 and adjusts bolt 3, described seal ring 1 is arranged on the inside of described can 2, multi-disc sealing semi-ring, consists of, and is enclosed within on the screw axis 5 of screw extruder; Described adjustment bolt 3 is installed by the radial screw bore on can 2, passes can 2 and touches seal ring 1; Described can 2 is fixed on screw extruder 6.
Preferably, described seal ring 1 is comprised of two sealing semi-rings.
Preferably, described can 2 is fixed by screws on screw extruder.
The utlity model has following advantage: (1) can be adjusted online, when material amount of leakage increases after seal wears, will adjust bolt precession, seal ring will be pressed on screw axis, and the gap between seal ring and screw axis reduces, and stop material to be revealed; (2) simple in structure, be easy to assembly and disassembly; (3) owing to can constantly adjusting, its service life is long.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is the right side view of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, the utility model is elaborated.
As shown in Figure 1 and Figure 2, the seal arrangement of screw extruder comprises seal ring 1, can 2 and adjusts bolt 3, described seal ring 1 is arranged on the inside of described can 2, seal ring 1 is comprised of multi-disc sealing semi-ring, (half fourth finger is 1/2nd circular ring plates to a complete annular of the common formation of a plurality of sealing semi-rings when seal ring consists of two sheets herein, while forming by three, be 1/3rd circular ring plates, the rest may be inferred), seal ring 1 is enclosed within on the screw axis 5 of screw extruder, between seal ring 1 and screw axis 5, there is very little gap 4, form clearance seal.Described adjustment bolt 3 is radially arranged on can 2 by the tapped hole on can 2, passes can 2 and touches seal ring 1; Described can 2 is fixed on screw extruder 6.
In operation, seal ring 1 is enclosed within on screw axis 5, can 2 is arranged on screw extruder 6, and bolt 3 is adjusted in precession, and seal ring 1 and screw axis 5 pre-pressings form very little clearance seal on screw axis 5 surfaces, have stoped the interior material from leakage of screw extruder 6.Screw axis is after 5 operation a period of times, and seal ring 1 wearing and tearing cause gap 4 to increase, and material from leakage amount increases, and at this moment adjusts online, will adjust bolt 3 precessions, and seal ring 1 will be pressed on screw axis 5, and gap 4 reduces, and has stoped material leakage.
In optimal way, described seal ring 1 is comprised of two sealing semi-rings.Adopt two sealing semi-rings to make the sealing device structure of this screw extruder simpler.
In optimal way, described can 2 is fixed by screws on screw extruder.
Above-described embodiment and accompanying drawing are nonrestrictive description; be intended to illustrate the utility model structural principle; should be appreciated that, any modification of under the condition that does not depart from the utility model connotation, technical solutions of the utility model being made or modification are all included in the protection domain of the utility model claims.
Claims (3)
1. a seal arrangement for screw extruder, is characterized in that: comprise seal ring, can and adjustment bolt, described seal ring is arranged on the inside of described can, multi-disc sealing semi-ring, consists of, and is enclosed within on the screw axis of screw extruder; Described adjustment bolt is installed by the radial screw bore on can, passes can and touches seal ring; Described can is fixed on screw extruder.
2. the seal arrangement of screw extruder according to claim 1, is characterized in that: described seal ring is comprised of two sealing semi-rings.
3. the seal arrangement of screw extruder according to claim 1, is characterized in that: described can is fixed by screws on screw extruder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320628899.2U CN203500467U (en) | 2013-10-12 | 2013-10-12 | Sealing device of screw extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320628899.2U CN203500467U (en) | 2013-10-12 | 2013-10-12 | Sealing device of screw extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203500467U true CN203500467U (en) | 2014-03-26 |
Family
ID=50331447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320628899.2U Expired - Fee Related CN203500467U (en) | 2013-10-12 | 2013-10-12 | Sealing device of screw extruder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203500467U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104315147A (en) * | 2014-09-03 | 2015-01-28 | 东方电气集团东风电机有限公司 | Power type contactless main shaft sealing device |
| CN105946197A (en) * | 2016-07-08 | 2016-09-21 | 大连塑料研究所有限公司 | Mold for hollowing out extrusion molding machine head |
| CN108383222A (en) * | 2018-03-03 | 2018-08-10 | 宁波帝杨电子科技有限公司 | A kind of environmental protection and energy saving sewage-treatment plant |
| CN112709822A (en) * | 2021-02-09 | 2021-04-27 | 湖北中烟工业有限责任公司 | Sealing device of reconstituted tobacco microfilter |
-
2013
- 2013-10-12 CN CN201320628899.2U patent/CN203500467U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104315147A (en) * | 2014-09-03 | 2015-01-28 | 东方电气集团东风电机有限公司 | Power type contactless main shaft sealing device |
| CN105946197A (en) * | 2016-07-08 | 2016-09-21 | 大连塑料研究所有限公司 | Mold for hollowing out extrusion molding machine head |
| CN108383222A (en) * | 2018-03-03 | 2018-08-10 | 宁波帝杨电子科技有限公司 | A kind of environmental protection and energy saving sewage-treatment plant |
| CN112709822A (en) * | 2021-02-09 | 2021-04-27 | 湖北中烟工业有限责任公司 | Sealing device of reconstituted tobacco microfilter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20141012 |
|
| EXPY | Termination of patent right or utility model |