CN214305277U - Double-screw brace granulator sealing structure - Google Patents
Double-screw brace granulator sealing structure Download PDFInfo
- Publication number
- CN214305277U CN214305277U CN202023350276.2U CN202023350276U CN214305277U CN 214305277 U CN214305277 U CN 214305277U CN 202023350276 U CN202023350276 U CN 202023350276U CN 214305277 U CN214305277 U CN 214305277U
- Authority
- CN
- China
- Prior art keywords
- sealing
- ring
- pull rod
- paddle
- extrusion
- 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.)
- Active
Links
Images
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model relates to a double screw brace granulator seal structure, including extrusion paddle leaf, pull rod, establish at the sealing washer, the lantern ring and the lid that extrusion paddle leaf and pull rod are in extrusion intracavity cooperation position department. The sealing ring, the lantern ring and the cover body are sleeved on the pull rod, the sealing ring is arranged in the lantern ring, and the cover body is pressed on the outer end face of the lantern ring and is fixed on the extrusion paddle together with the lantern ring through screws. The inner wall of the sealing ring is provided with a plurality of layers of annular sealing lips which are distributed at intervals along the axial direction. The cover body is provided with an annular boss extending into the sleeve ring. The annular boss can press the wall body of the seal ring to cause the seal lip to generate radial deformation and press the wall surface of the pull rod. This patent is through improving the seal structure that is in the extrusion intracavity between extrusion paddle and the pull rod, can effectively prevent liquid to invade the fitting surface between extrusion paddle and the pull rod, helps guaranteeing stability and the reliability of cooperation relation between extrusion paddle and the pull rod, helps guaranteeing the stability of plastic strip shaping quality.
Description
Technical Field
The utility model relates to a plastic granulation production facility, concretely relates to double screw brace granulator seal structure.
Background
In the plastic granulation production line, a plurality of raw materials are stirred, mixed, heated and melted into a uniform whole, and then are sent into a bar drawing machine to be extruded into plastic bars. The plastic strip is subjected to cooling and drying treatment by a water cooling system and an air cooling system, and the plastic strip is conveyed to a shearing machine after being hardened and is sheared into section-shaped particles.
In the twin-screw brace granulator, the outer end of the pull rod is pressed against the end part of the extrusion paddle through a spiral ring so that the extrusion paddle is fixed on the pull rod and can synchronously rotate along with the pull rod to extrude the material into strips. In the brace granulator in the past, the sealing structure in the extrusion cavity between the extrusion paddle and the pull rod only adopts one or more O-shaped sealing rings, the sealing performance of the sealing structure is poor, liquid easily invades the matching surface between the extrusion paddle and the pull rod, the stability of the installation of the extrusion paddle on the pull rod is adversely affected, and the stability of the molding quality of the plastic strip is poor.
SUMMERY OF THE UTILITY MODEL
The utility model provides a double screw brace granulator seal structure, it is through improving the seal structure that is in the extrusion intracavity between extrusion paddle and the pull rod, can prevent liquid to invade the fitting surface between extrusion paddle and the pull rod effectively, helps guaranteeing stability and the reliability of cooperation relation between extrusion paddle and the pull rod, helps guaranteeing the stability of plastic strip shaping quality.
The utility model provides a technical scheme that its technical problem adopted is: the sealing structure of the twin-screw brace granulator comprises an extruding paddle, a pull rod, a sealing ring, a lantern ring and a cover body, wherein the extruding paddle and the pull rod are arranged at the matching position of an extruding cavity.
The sealing ring, the lantern ring and the cover body are sleeved on the pull rod, the sealing ring is arranged in the lantern ring, the cover body is pressed on the outer end face of the lantern ring, and the cover body and the lantern ring are fixed on the extruding paddle blade together through screws.
The inner wall of the sealing ring is provided with a plurality of layers of annular sealing lips which are distributed at intervals along the axial direction. The cover body is provided with an annular boss extending into the sleeve ring. The annular boss can press against a wall body of the seal ring to radially deform the seal lip and press against a wall surface of the pull rod.
And a sealing gasket is arranged between the matching surfaces of the cover body and the lantern ring.
Furthermore, a radial flange is formed at one end, close to the extruding paddle, of the sealing ring, and the side surface of the radial flange is a conical surface, and the large-diameter end of the conical surface faces the extruding paddle. The collar is formed with a tapered sink that receives the radial flange. After the lantern ring is fixed on the extrusion paddle, the conical sunken groove can push the radial flange to deform.
Furthermore, the end face of the extruding paddle blade is provided with a counter bore. On the inner wall of the sealing ring, a sealing lip at the inner end extends partially into the counter bore.
Further, a sealing support leg a and a sealing support leg b which are arranged axially and alternately are formed on the inner wall of the sealing ring, and the sealing support legs b are close to the extruding paddle. The sealing support leg a extends along the radial direction, and two annular sealing lips are formed at the inner end of the sealing support leg a. The sealing feet b extend in a direction inclined to the axial direction, and two annular sealing lips are also formed at the inner ends. The sealing leg b extends into the counterbore.
Further, a metal ring is embedded in the sealing ring, and the axial section of the metal ring is Z-shaped. The outer end of the sealing ring is provided with a radial flange plate which is opposite to the end surface and is tilted outwards. The outer end of the metal ring is arranged in the radial flange plate, and the inner end of the metal ring extends to a position where the sealing support leg a is connected with the sealing support leg b.
When the cover body is pressed on the end face of the sleeve ring, the cover body can press the radial flange plate into the sleeve ring to enable the metal ring to deform, and the sealing support legs a and the sealing support legs b can be pressed against the pull rod by internal force generated by deformation.
The utility model has the advantages that: this patent is through improving the seal structure that is in the extrusion intracavity between extrusion paddle and the pull rod, can prevent effectively that liquid from invading the fitting surface between extrusion paddle and the pull rod in, help guaranteeing stability and the reliability of cooperation relation between extrusion paddle and the pull rod, help guaranteeing the stability of plastic strip shaping quality.
Drawings
Fig. 1 is a schematic structural diagram of the first embodiment of the present patent.
Fig. 2 is a schematic structural diagram of the second embodiment of the present patent.
In the figure: 10 squeeze paddle, 101 counterbore, 20 tie rod, 30 spiral ring, 1 seal ring, 11 radial flange, 12 seal lip a, 13 seal lip b, 14 seal leg a, 15 seal leg b, 16 metal ring, 17 radial flange, 2 lantern ring, 3 cover body, 31 annular boss.
Detailed Description
The drawings in the specification show the structure, ratio, size, etc. only for the purpose of matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and not for the purpose of limiting the present invention, so the present invention does not have the essential meaning in the art, and any structure modification, ratio relationship change or size adjustment should still fall within the scope covered by the technical content disclosed in the present invention without affecting the function and achievable purpose of the present invention. Meanwhile, the terms "upper", "lower", "front", "rear", "middle", and the like used in the present specification are for the sake of clarity only, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are also considered to be the scope of the present invention without substantial changes in the technical content.
As shown in fig. 1 and 2, the sealing structure of the twin-screw brace granulator comprises a squeezing paddle 10, a pull rod 20, and a sealing ring 1, a collar 2 and a cover body 3 which are arranged at the matching position of the squeezing paddle 10 and the pull rod 20 in a squeezing cavity. The outer end of the tie rod 20 is held against the end of the squeeze blade 10 by the threaded ring 30 to secure the squeeze blade to the tie rod.
The sealing ring 1, the lantern ring 2 and the cover body 3 are sleeved on the pull rod 20, the sealing ring is arranged in the lantern ring, and the cover body is pressed on the outer end face of the lantern ring. The cover 3 is fixed to the squeeze paddle together with the collar 2 by screws.
As shown in fig. 1, two layers of annular sealing lips (sealing lip a12 and sealing lip b13) are provided on the inner wall of the sealing ring 1, and the multiple layers of sealing lips are distributed at intervals in the axial direction.
The cover body 3 is provided with an annular boss 31 extending into the lantern ring 2. The annular boss 31 can press against the wall of the seal ring 1 to radially deform the seal lip 1 and press against the wall of the tie rod 20.
A sealing gasket is arranged between the matching surfaces of the cover body 3 and the lantern ring 2.
One end of the sealing ring 1 close to the extruding paddle 10 is formed with a radial flange 11, the side surface of the radial flange 11 is a conical surface, and the large diameter end of the conical surface faces the extruding paddle 10. The collar 2 is formed with a conical sink that receives the radial flange. After the lantern ring 2 is fixed on the extrusion paddle 10, the conical sunken groove can push the radial flange 11 to deform.
The end face of the extruding paddle 10 is provided with a counter bore 101. On the inner wall of the sealing ring 1, the sealing lip at the inner end extends partially into the counterbore 101.
The inner wall of the sealing ring 1 is formed with axially spaced sealing feet a14 and b15, which are adjacent to the squeeze blade 10. The sealing support leg a extends along the radial direction, and two annular sealing lips are formed at the inner end of the sealing support leg a. The sealing feet b extend in a direction inclined to the axial direction, and two annular sealing lips are also formed at the inner ends. The seal leg b15 extends into the counterbore 101.
A metal ring 16 is embedded in the sealing ring 1, and the axial section of the metal ring 16 is Z-shaped. The outer end of the sealing ring 1 is provided with a radial flange plate 17 which is opposite to the end surface and is tilted outwards. The outer end of the metal ring 16 is placed in the radial flange 17 and the inner end of the metal ring 16 extends to the point where the sealing leg a14 engages the sealing leg b 15.
When the lid 3 is pressed against the end surface of the collar 2, the lid 3 can press the radial flange 17 into the collar 2 to deform the metal ring 16, and the seal leg a14 and the seal leg b15 can be pressed against the outer wall of the tie rod 20 by an internal force generated by the deformation. The metal ring endows the sealing ring 1 with dynamic pressing force, the contact position and the pressing state of a sealing lip arranged on the sealing ring 1 and the pull rod can be continuously changed along with the change of the stress state of the extruding paddle when the pull rod drives the extruding paddle to operate, and the stability and the reliability of the sealing effect can be ensured.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. The present invention can be modified in many ways without departing from the spirit and scope of the present invention, and those skilled in the art can modify or change the embodiments described above without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (7)
1. The utility model provides a double screw brace granulator seal structure, includes extrusion paddle and pull rod, its characterized in that: the extrusion paddle is matched with the pull rod in the extrusion cavity;
the sealing ring, the lantern ring and the cover body are sleeved on the pull rod, the sealing ring is arranged in the lantern ring, and the cover body is pressed on the outer end face of the lantern ring and is fixed on the extrusion paddle together with the lantern ring through screws;
the inner wall of the sealing ring is provided with a plurality of layers of annular sealing lips which are distributed at intervals along the axial direction;
the cover body is provided with an annular boss extending into the sleeve ring; the annular boss can press against a wall body of the seal ring to radially deform the seal lip and press against a wall surface of the pull rod.
2. The twin screw brace granulator sealing structure of claim 1, wherein: and a sealing gasket is arranged between the matching surfaces of the cover body and the lantern ring.
3. The twin-screw brace granulator sealing structure according to claim 1 or 2, characterized in that: a radial flange is formed at one end, close to the extruding paddle, of the sealing ring, the side surface of the radial flange is a conical surface, and the large-diameter end of the conical surface faces the extruding paddle; a conical sink groove for accommodating the radial flange is formed on the collar; after the lantern ring is fixed on the extrusion paddle, the conical sunken groove can push the radial flange to deform.
4. The twin screw brace granulator sealing structure of claim 1, wherein: the end face of the extruding paddle blade is provided with a counter bore; on the inner wall of the sealing ring, a sealing lip at the inner end extends partially into the counter bore.
5. The twin screw brace granulator sealing structure of claim 4, wherein: the inner wall of the sealing ring is provided with sealing support legs a and sealing support legs b which are axially arranged at intervals, and the sealing support legs b are close to the extruding paddle;
the sealing support leg a extends along the radial direction, and two annular sealing lips are formed at the inner end of the sealing support leg a;
the sealing support leg b extends along the direction inclined relative to the axial direction, and two annular sealing lips are formed at the inner end of the sealing support leg b;
the sealing leg b extends into the counterbore.
6. The twin screw brace granulator sealing structure of claim 1, wherein: the inner wall of the sealing ring is provided with sealing support legs a and sealing support legs b which are axially arranged at intervals, and the sealing support legs b are close to the extruding paddle;
the sealing support leg a extends along the radial direction, and two annular sealing lips are formed at the inner end of the sealing support leg a;
the sealing feet b extend in a direction inclined to the axial direction, and two annular sealing lips are also formed at the inner ends.
7. The twin-screw riblet granulator sealing structure of claim 5 or 6, wherein: a metal ring is embedded in the sealing ring, and the axial section of the metal ring is Z-shaped;
the outer end of the sealing ring is provided with a radial flange plate which is opposite to the end surface and is tilted outwards;
the outer end of the metal ring is arranged in the radial flange plate, and the inner end of the metal ring extends to a position where the sealing support leg a is jointed with the sealing support leg b;
when the cover body is pressed on the end face of the sleeve ring, the cover body can press the radial flange plate into the sleeve ring to enable the metal ring to deform, and internal force generated by deformation can press the sealing support legs a and the sealing support legs b to lean against the pull rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023350276.2U CN214305277U (en) | 2020-12-31 | 2020-12-31 | Double-screw brace granulator sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023350276.2U CN214305277U (en) | 2020-12-31 | 2020-12-31 | Double-screw brace granulator sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214305277U true CN214305277U (en) | 2021-09-28 |
Family
ID=77822314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023350276.2U Active CN214305277U (en) | 2020-12-31 | 2020-12-31 | Double-screw brace granulator sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214305277U (en) |
-
2020
- 2020-12-31 CN CN202023350276.2U patent/CN214305277U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103507259B (en) | Efficient large pipe-extrusion forming device | |
| CN203228394U (en) | Plastic pipe material extruding die | |
| CN214305277U (en) | Double-screw brace granulator sealing structure | |
| CN203580084U (en) | Efficient large-sized pipe extrusion molding device | |
| CN213441059U (en) | Extruder is used in processing of withstand voltage pencil pipe | |
| CN201645778U (en) | Novel wire drawing machine with double-screw melt extrusion pump with stable extrusion flow rate | |
| CN217258278U (en) | Double-screw machine barrel | |
| Kruder | Extrusion | |
| CN210538522U (en) | Extruder die head based on fried-free instant noodle machine | |
| CN209208033U (en) | It is a kind of for producing the extruder of insulating materials | |
| US3274648A (en) | Seal ring for screw type extruders | |
| CN219055258U (en) | Screw ejector | |
| CN105109010A (en) | Core and mouth mold for pipe processing | |
| CN203427312U (en) | Extruding hole mold sleeve | |
| CN217414811U (en) | Granulation mechanism convenient to clean for vehicle armrest processing | |
| CN213227486U (en) | Pipe extrusion die capable of avoiding scraping of inner wall | |
| CN210190522U (en) | Extrusion die head of squeezing granulator | |
| CN203344294U (en) | Double-screw to single-screw changed spiral extrusion molding device | |
| CN221437180U (en) | PTFE pipe extrusion molding mould | |
| CN103624951B (en) | A kind of plastic extrusion method of efficiently extruding PA66 internal tooth form gear | |
| CN217476545U (en) | Extruder for injection molding particles | |
| CN220008765U (en) | Filter plate for high polymer material forming machine | |
| CN216804353U (en) | Improved generation plastic extruder's extrusion mechanism | |
| CN211031147U (en) | Polyacrylamide extruder template | |
| CN212697601U (en) | Canned type screw rotor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |