CN216329973U - Filter for cast film extruder - Google Patents
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- CN216329973U CN216329973U CN202122483686.2U CN202122483686U CN216329973U CN 216329973 U CN216329973 U CN 216329973U CN 202122483686 U CN202122483686 U CN 202122483686U CN 216329973 U CN216329973 U CN 216329973U
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- film extruder
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Abstract
The present invention provides a filter for a cast film extruder, comprising: the feeding end cover, a main body, cylinder sintering net and discharge end cover, the feeding end cover has the first surface, the second surface, the feed port, the main body has the third surface, the fourth surface, first anchor ring, first passageway, the discharge end cover has the fifth surface, the sixth surface, the discharge port, the second surface passes through first fixed screw with the third surface and is connected, the fourth surface passes through second fixed screw with the fifth surface and is connected, the one end intercommunication feed port of first passageway, other end intercommunication discharge port, cylinder sintering net sets up in first passageway, the one end and the fifth surface fixed connection of cylinder sintering net. The filter for the cast film extruder is firm in connection; the rigidity of the net body is improved, the filtering performance of the filter screen is improved, black spots and impurities can be effectively intercepted, and the filtering precision is improved; the workload of replacing the filter is reduced.
Description
Technical Field
The utility model relates to the technical field of extrusion equipment, in particular to a filter for a cast film extruder.
Background
Cast film extruders are widely used in industry, and are classified into single-screw and twin-screw extruders according to the number of screws, and into vented and non-vented extruders according to whether or not venting is performed. However, whatever the type of extruder, it is necessary to provide a filter for filtering black spots, crystal spots and other impurities in the molten resin to improve the quality of the product. As shown in fig. 1, the currently used filter is composed of the following parts: discharge end cover 1, filter screen 2, support frame 3, water conservancy diversion pole 4 and filter screen gland 5. The installation steps are as follows: the discharging end cover 1 and the support frame 3 are fixedly connected through the jackscrew 6, the filter screen 2 is sleeved on the support frame 3, the guide rod 4 is inserted from the top, and the filter screen gland 5 is screwed up. Such a filter has the following problems in the production process: 1. the support frame 3 and the discharge end cover 1 are connected by only two jackscrews 6, so that the connection is not firm, and the connection failure can be caused occasionally; 2. the gap between the connecting part of the support frame 3 and the discharge end cover 1 is large, and the material leakage condition exists during production, so that the blocking effect of black spots and impurities is poor, and the quality of a rear-end product is influenced; 3. the filter screen 2 has poor rigidity and poor filtering effect, the original multilayer plain-woven screen only has seam welding and spot welding, each layer of screen is mutually separated, meshes are easy to deform, the filtering effect is poor, the permeability is poor, the pressure difference between the front and the back of the filter is easy to cause, and the thickness uniformity of a product is influenced; 4. the filter screen 2 that the filter was equipped with is disposable product, all needs to be changed new filter screen when installing the filter each time, increases work load. Therefore, it is necessary to develop a filter for a casting film extruder.
SUMMERY OF THE UTILITY MODEL
The present invention provides a filter for a cast film extruder to solve the above problems.
In order to solve the above technical problems, the present invention provides a filter for a cast film extruder, comprising: a feeding end cover, a main body, a cylinder type sintering net and a discharging end cover,
the feeding end cover is provided with a first surface, a second surface corresponding to the first surface and a feeding hole penetrating from the first surface to the second surface, the main body is provided with a third surface, a fourth surface corresponding to the third surface, a first ring surface extending from the third surface to the fourth surface and a first channel penetrating from the third surface to the fourth surface, the discharging end cover is provided with a fifth surface, a sixth surface corresponding to the fifth surface and a discharging hole penetrating from the fifth surface to the sixth surface, the second surface is connected with the third surface through a first fixing screw, the fourth surface is connected with the fifth surface through a second fixing screw, one end of the first channel is communicated with the feeding hole, the other end of the first channel is communicated with the discharging hole, and the barrel type sintering net is arranged in the first channel, one end of the cylindrical sintering net is fixedly connected with the fifth surface.
As a preferable aspect of the filter for a cast film extruder according to the present invention, the feed hole is formed in a trumpet shape, an end of the feed hole on the first surface is smaller than an end of the feed hole on the second surface, the discharge hole is formed in a trumpet shape, and an end of the discharge hole on the fifth surface is larger than an end of the discharge hole on the sixth surface.
As a preferable aspect of the filter for a cast film extruder according to the present invention, the cylindrical sintered mesh has a cylindrical shape and has a first end, a second end corresponding to the first end, and a ring wall extending from the first end to the second end, the first end is a closed end, the second end is an open end, and the second end is communicated with the discharge hole.
As a preferable scheme of the filter for the cast film extruder, the annular wall is provided with a protective layer, a filtering layer, a flow dividing layer, a reinforcing layer and a supporting layer from outside to inside in sequence.
As a preferable mode of the filter for cast film extruder according to the present invention, the protective layer has a plurality of first warps and a plurality of first wefts, the plurality of first warps are parallel to each other, the plurality of first wefts are parallel to each other, any one of the first warps is perpendicular to any one of the first wefts, and a first mesh structure is formed, and the first wefts are pressed on the first warps such that the first wefts are protruded to the outside at the junctions of the first warps and the first wefts.
As a preferable embodiment of the filter for cast film extruder according to the present invention, the filter layer has a plurality of second warps, a plurality of second wefts and a plurality of third wefts, the plurality of second warps are parallel to each other, any one of the second warps is perpendicular to any one of the second wefts or the third wefts, any one of the second wefts is interlaced with one of the third wefts many times, and two adjacent interlaced intersections are separated by one of the second warps to form the second mesh structure.
As a preferable aspect of the filter for a cast film extruder of the present invention, the divided flow layer has a plurality of third warps, a plurality of fourth wefts, a plurality of fifth wefts, a plurality of sixth wefts and a plurality of seventh wefts, the plurality of third warps are parallel to each other, any one of the third warps is perpendicular to any one of the fourth wefts, the fifth wefts, the sixth wefts or the seventh wefts, each of the fourth wefts and the fifth wefts is interlaced with one of the sixth wefts and one of the seventh wefts a plurality of times, adjacent interlaced intersections are separated by one of the third warps, the fifth wefts are disposed outside the fourth wefts, and the seventh wefts are disposed outside the sixth wefts to form a third mesh structure.
As a preferable mode of the filter for a cast film extruder according to the present invention, the reinforcing layer has a plurality of fourth warp threads and a plurality of eighth weft threads, the plurality of fourth warp threads are parallel to each other, the plurality of eighth weft threads are parallel to each other, any one of the fourth warp threads is perpendicular to any one of the eighth weft threads, and the fourth warp threads pass through the eighth weft threads to form a fourth mesh structure.
As a preferable aspect of the filter for a cast film extruder according to the present invention, the support layer is formed by rolling a punched plate, and the punched plate is provided with a plurality of through holes.
As a preferable scheme of the filter for the cast film extruder, the filter for the cast film extruder further comprises a half conical ring and a locking ring, one end of the cylindrical sintering net is in threaded connection with the inner wall of the discharge hole, the half conical ring is sleeved on the ring wall of the cylindrical sintering net, the locking ring is two semicircular rings, the semicircular rings are pressed on the half conical ring, and the two semicircular rings are fixedly connected with the fifth surface through third fixing screws.
Compared with the prior art, the filter for the cast film extruder provided by the utility model is firm in connection; the rigidity of the net body is improved, the filtering performance of the filter screen is improved, black spots and impurities can be effectively intercepted, and the filtering precision is improved; the workload of replacing the filter is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise. Wherein the content of the first and second substances,
FIG. 1 is a schematic view showing a structure of a filter for a cast film extruder in the prior art;
FIG. 2 is a schematic view showing the structure of a filter for a cast film extruder according to the present invention;
FIG. 3 is a schematic view of the cross-section taken along A-A in FIG. 2;
FIG. 4 is a schematic view showing the structure of a cylindrical sintered mesh of a filter for a cast film extruder according to the present invention;
FIG. 5 is a schematic sectional view of a filter web of a filter for a cast film extruder according to the present invention.
Wherein: the device comprises a discharge end cover 1, a filter screen 2, a support frame 3, a guide rod 4, a filter screen gland 5, a jackscrew 6, a feed end cover 7, a main body 8, a cylindrical sintering screen 9, a feed hole 10, a first ring surface 11, a first channel 12, a discharge hole 13, a first fixing screw 14, a second fixing screw 15, a first end 16, a ring wall 17, a protective layer 18, a filter layer 19, a shunting layer 20, a reinforcing layer 21, a supporting layer 22, a Hough cone ring 23, a locking ring 24 and a third fixing screw 25.
Detailed Description
The utility model provides a filter for a cast film extruder, which comprises: feed end cover 7, main part 8, cylinder sintering net 9 and discharge end cover 1.
The present invention will be described in further detail with reference to specific embodiments in order to make the above objects, features and advantages more apparent and understandable.
First, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the utility model. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Next, the present invention will be described in detail by using a schematic structural diagram and the like, and in describing the embodiments of the present invention in detail, the schematic diagram showing the structure of the filter for the cast film extruder will not be partially enlarged in a general scale for convenience of explanation, and the schematic diagram is only an example, which should not limit the scope of the present invention. In addition, the actual fabrication process should include three-dimensional space of length, width and depth.
Example 1
Referring to fig. 2 to 3, as shown in fig. 2 to 3, a filter for a cast film extruder includes: feed end cover 7, main part 8, cylinder sintering net 9 and discharge end cover 1. For ease of understanding, the above structures will now be described separately:
first, feed end cap 7
As shown in fig. 3, the feed end cap 7 is disposed at the leftmost side and has a trumpet-shaped feed hole 10 at the center thereof. The outer surface of the feed end cap 7 is a first surface (not shown), the inner surface is a second surface (not shown), and the diameter of the feed hole 10 gradually increases from the first surface to the second surface.
Second, main body 8
As shown in fig. 3, the main body 8 is a hollow tubular structure, wherein the hollow portion is a first channel 12, an end surface of the first channel connected with the feeding end cap 7 is a third surface (not shown), an end surface connected with the discharging end cap 1 is a fourth surface (not shown), a curved surface on the outer side of the first channel is a first ring surface 11, the first channel 12 passes from the third surface on the left side to the fourth surface on the right side, and the left side of the first channel 12 is communicated with the feeding hole 10. The third surface of the main body 8 is connected with the feeding end cover 7 through a first fixing screw 14.
Three-cylinder type sintering net 9
As shown in fig. 3, the cylindrical sintering net 9 is cylindrical and disposed in the first channel 12, the right end of the cylindrical sintering net 9 is fixedly connected to the discharge end cap 1, the left end of the cylindrical sintering net 9 is a first end 16, the right end is a second end (not shown), the curved surface outside the cylindrical sintering net is an annular wall 17, wherein the first end 16 is a closed end, the second end is an open end, and the second end is communicated with the discharge hole 13. Referring to fig. 4 and 5, fig. 4 is a schematic structural view of a cylindrical sintered mesh of a filter for a cast film extruder according to the present invention; FIG. 5 is a schematic sectional view of a filter web of a filter for a cast film extruder according to the present invention. As shown in fig. 4 and 5, the annular wall 17 is divided into five layers from the outside to the inside, in this order, a protective layer 18, a filter layer 19, a diverter layer 20, a reinforcing layer 21 and a support layer 22. The protective layer 18 is composed of a plurality of parallel vertical lines and a plurality of parallel horizontal lines, for the convenience of understanding, the vertical lines are first warp lines (not shown), the horizontal lines are first weft lines (not shown), and the first warp lines and the first weft lines are perpendicular to each other, so that a first net structure, i.e., a plurality of grid-shaped structures, is formed. In this first net-like structure, at the intersection of the first warp and the first weft, the first weft is pressed against the first warp, so that the first weft at the intersection is protruded to the outside, and the gap generated by the intersection is 80 mesh. The filter layer 19 is composed of a plurality of parallel vertical lines and two kinds of horizontal lines, the same kind of horizontal lines are also parallel, for the convenience of understanding, the vertical lines are set as second warps (not shown), one kind of horizontal lines are set as second wefts (not shown), the other kind of horizontal lines are set as third wefts (not shown), any one second warp is perpendicular to any one second weft, and any one second warp is perpendicular to any one third weft. Each second weft is interlaced with one third weft a plurality of times, and in the gaps formed by interlacing, one second warp passes through, thereby forming a second net structure in which the gaps in the middle are 500 mesh. The distribution layer 20 is composed of a plurality of parallel vertical lines and four transverse lines, the same transverse lines are parallel, for the convenience of understanding, the vertical lines are set as third warps (not shown), one transverse line is set as fourth wefts (not shown), the second transverse line is set as fifth wefts (not shown), the third transverse line is set as sixth wefts (not shown), the fourth transverse line is set as seventh wefts (not shown), any one third warp is perpendicular to any one fourth weft, fifth weft, sixth weft or seventh weft, one fourth weft and one fifth weft are interlaced with one sixth weft and one seventh weft for a plurality of times, the fifth weft is arranged on the outer side of the fourth weft, the seventh weft is arranged on the outer side of the sixth weft to form four intersections, the four intersections are positioned close to each other, a large gap is formed between the adjacent similar four intersections, and the third warp passes through the large gap, forming a third network structure in which the gaps between the first and second mesh layers are 100 mesh. The reinforcing layer 21 is composed of a plurality of parallel vertical lines and a plurality of parallel horizontal lines, for the convenience of understanding, the vertical lines are fourth warp lines (not shown) and the horizontal lines are eighth weft lines (not shown), any one fourth warp line is perpendicular to any one eighth weft line, the fourth warp line passes through the eighth weft lines to form a fourth net-shaped structure, and in the structure, the gaps in the middle are 12 meshes. The support layer 22 is made of a 2mm punched plate. The punching plate has a plurality of through holes. The 5 layers of mesh are sintered at high temperature, pressed, cut, welded and machined to form the final cylindrical sintered mesh 46.
The second end of the cylinder sintering net 9 is in threaded connection with the inner wall of the discharge hole 13, a half conical ring 23 is sleeved on the annular wall 17 of the cylinder sintering net 9, a locking ring 24 (two semicircular rings) is pressed on the half conical ring 23, and the two semicircular rings are fixedly connected with the fifth surface through a third fixing screw 25.
As shown in fig. 3, the inner side surface of the discharge end cover 1 is a fifth surface, the outer side surface is a sixth surface, a discharge hole 13 is arranged in the center of the discharge end cover 1, the right end of the first channel 12 is communicated with the discharge hole 13, the discharge hole 13 is in a trumpet shape and gradually decreases from the fifth surface direction to the sixth surface, and the main body 8 is connected with the discharge end cover 1 through a second fixing screw 15.
The principle of the above embodiment is as follows: the molten resin flows in from the feeding hole 10 of the feeding end cover 7, fills the first channel 12 of the main body 8, then gradually passes through the layer-by-layer filtration of the cylindrical sintering net 9, enters the cylindrical sintering net 9 and then flows out from the discharging hole 13.
It should be understood by those skilled in the art that one of the features or objects of the present invention is to: according to the filter for the cast film extruder, the parts of the whole structure are connected by threads with better fastening effect instead of the original top thread fixation; the filtering structure is changed from the original multilayer plain weave net into a punching plate composite sintering net which is high temperature resistant, good in air permeability, high in precision and stable, and the stability is further improved by using a half cone ring and a locking ring; the strength is higher after the original multilayer plain mesh which needs to be matched with the supporting frame is changed into the multilayer structure woven mesh, and no additional supporting frame is needed; in use, the filter is disassembled before improvement, the disposable filter screen is disassembled and a new filter screen is replaced after the filter is cleaned by the screen burning furnace, the filter is disassembled after improvement and can be installed and used after being cleaned by the screen burning furnace, the work load can be saved, and the filter screen expenditure is reduced.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. A filter for a cast film extruder, comprising: a feeding end cover, a main body, a cylinder type sintering net and a discharging end cover,
the feeding end cover is provided with a first surface, a second surface corresponding to the first surface and a feeding hole penetrating from the first surface to the second surface, the main body is provided with a third surface, a fourth surface corresponding to the third surface, a first ring surface extending from the third surface to the fourth surface and a first channel penetrating from the third surface to the fourth surface, the discharging end cover is provided with a fifth surface, a sixth surface corresponding to the fifth surface and a discharging hole penetrating from the fifth surface to the sixth surface, the second surface is connected with the third surface through a first fixing screw, the fourth surface is connected with the fifth surface through a second fixing screw, one end of the first channel is communicated with the feeding hole, the other end of the first channel is communicated with the discharging hole, and the barrel type sintering net is arranged in the first channel, one end of the cylindrical sintering net is fixedly connected with the fifth surface.
2. A filter for a cast film extruder as claimed in claim 1, wherein: the feed port is loudspeaker form, the feed port is in one end on the first surface is less than the feed port is in one end on the second surface, the discharge opening is loudspeaker form, the discharge opening is in one end on the fifth surface is greater than the discharge opening is in one end on the sixth surface.
3. A filter for a cast film extruder as claimed in claim 1, wherein: the cylinder type sintering net is cylindrical and is provided with a first end, a second end corresponding to the first end, and a ring wall extending from the first end to the second end, wherein the first end is a closed end, the second end is an open end, and the second end is communicated with the discharge hole.
4. A filter for a cast film extruder as claimed in claim 3, wherein: the annular wall is sequentially provided with a protective layer, a filter layer, a flow distribution layer, a reinforcing layer and a supporting layer from outside to inside.
5. A filter for a cast film extruder as claimed in claim 4, wherein: the protective layer has many first warps and many first wefts, and many first warps are parallel to each other, and many first wefts are parallel to each other, and arbitrary one first warp and arbitrary one first weft mutually perpendicular constitute first network structure, first weft pressure is located first warp, make first warp with the handing-over department of first weft, first weft is protruding to the outside.
6. A filter for a cast film extruder as claimed in claim 4, wherein: the filter layer is provided with a plurality of second warps, a plurality of second wefts and a plurality of third wefts, the plurality of second warps are parallel to each other, any one second warp is perpendicular to any one second weft or third weft, any one second weft is interlaced with one third weft for many times, and two adjacent interlaced crossing points are separated by one second warp to form a second net-shaped structure.
7. A filter for a cast film extruder as claimed in claim 4, wherein: the shunting layer is provided with a plurality of third warps, a plurality of fourth wefts, a plurality of fifth wefts, a plurality of sixth wefts and a plurality of seventh wefts, the plurality of third warps are parallel to each other, any one third warp is perpendicular to any one fourth weft, any one fifth weft, any one sixth weft or any one seventh weft, one fourth weft and one fifth weft are interlaced with one sixth weft and one seventh weft for many times, adjacent interlaced intersections are spaced by one third warp, the fifth weft is arranged on the outer side of the fourth weft, and the seventh weft is arranged on the outer side of the sixth weft to form a third net-shaped structure.
8. A filter for a cast film extruder as claimed in claim 4, wherein: the enhancement layer has many fourth warp and many eighth weft, and many fourth warp are parallel to each other, and many eighth weft are parallel to each other, and arbitrary one fourth warp and arbitrary one eighth weft mutually perpendicular, fourth warp passes eighth weft constitutes fourth network structure.
9. A filter for a cast film extruder as claimed in claim 4, wherein: the supporting layer is rolled by a punching plate, and a plurality of through holes are formed in the punching plate.
10. A filter for a cast film extruder as claimed in claim 3, wherein: the filter for the cast film extruder further comprises a half conical ring and a locking ring, one end of the cylinder sintering net is in threaded connection with the inner wall of the discharge hole, the half conical ring is sleeved on the ring wall of the cylinder sintering net, the locking ring is two semicircular rings, the semicircular rings are pressed on the half conical ring, and the two semicircular rings are fixedly connected with the fifth surface through third fixing screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122483686.2U CN216329973U (en) | 2021-10-15 | 2021-10-15 | Filter for cast film extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122483686.2U CN216329973U (en) | 2021-10-15 | 2021-10-15 | Filter for cast film extruder |
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| Publication Number | Publication Date |
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| CN216329973U true CN216329973U (en) | 2022-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122483686.2U Active CN216329973U (en) | 2021-10-15 | 2021-10-15 | Filter for cast film extruder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115157619A (en) * | 2022-07-06 | 2022-10-11 | 江苏科尔玛智能装备制造有限公司 | Intelligent extrusion casting film production device |
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2021
- 2021-10-15 CN CN202122483686.2U patent/CN216329973U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115157619A (en) * | 2022-07-06 | 2022-10-11 | 江苏科尔玛智能装备制造有限公司 | Intelligent extrusion casting film production device |
| CN115157619B (en) * | 2022-07-06 | 2023-07-07 | 江苏科尔玛智能装备制造有限公司 | Intelligent extrusion casting film production device |
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