CN210233949U

CN210233949U - High-efficiency filter of extrusion film coating machine

Info

Publication number: CN210233949U
Application number: CN201920422402.9U
Authority: CN
Inventors: Guoliang Li; 李国亮
Original assignee: Shantou Jintian Plastic Industry Co ltd
Current assignee: Shantou Jintian Plastic Industry Co ltd
Priority date: 2019-03-31
Filing date: 2019-03-31
Publication date: 2020-04-03
Anticipated expiration: 2029-03-31

Abstract

A high-efficiency filter of an extrusion film coating machine comprises a support column, a filter cylinder, a filter screen and a connecting cylinder, wherein the filter cylinder is sleeved outside the support column, a plurality of filter through holes are formed in the circumferential side surface of the filter cylinder, the connecting cylinder is sleeved outside the filter cylinder, and the filter screen is coated on the outer surface of the filter cylinder; a first gap is formed between the filter screen and the inner surface of the connecting cylinder to form a first annular material cavity, the left end of the first annular material cavity is in a sealed state, and the right end of the first annular material cavity is provided with a feed inlet; a second gap is formed between the support column and the inner surface of the filter cylinder to form a second annular material cavity, and the left end and the right end of the second annular material cavity are in a sealing state; the pillar is provided with a plurality of longitudinal flow channels communicated with the second annular material cavity, the middle of the pillar is provided with a transverse flow channel communicated with each longitudinal flow channel, and one side of the pillar is provided with a discharge hole communicated with the transverse flow channel of the pillar. The efficient filter of the extrusion film laminating machine is suitable for the technological production of the laminating reclaimed materials, the net changing period is prolonged, the production efficiency is improved, and the loss and the labor intensity are reduced.

Description

High-efficiency filter of extrusion film coating machine

Technical Field

The utility model relates to a plastic extrusion laminating equipment especially relates to an extrude high efficiency filter of laminating machine.

Background

The composite plastic woven cloth has been produced in China for decades, and the used raw materials mainly comprise polypropylene, polyethylene and ethylene-vinyl acetate copolymer. The production process flow is that polypropylene or low-pressure polyethylene is extruded into film on a wire drawing machine, and is cut into flat wires by a dense blade, and the flat wires are wound into wire ingots after being heated, stretched and shaped by heat treatment; the flat filaments are woven into plastic woven cloth by a weaving machine such as a circular weaving machine, a water weaving machine or a projectile weaving machine, and then one side or two sides of the plastic woven cloth are coated with polymer materials such as polypropylene, high-pressure polyethylene or ethylene-vinyl acetate copolymer in a flow casting way by a plastic extrusion film coating machine.

The composite plastic woven cloth has the advantages of water resistance, no toxicity, light weight, good low temperature resistance, easy recycling and the like, and is widely applied. In the past, the method is mainly applied to aspects such as geotechnical seepage prevention, tents, color strip cloth, tarpaulin, vinyl houses, aquaculture and the like. With the enhancement of the environmental awareness of human beings, people are making efforts to develop new applications of the heat-insulating fabric, such as a roof heat-insulating layer, PE advertising cloth, electric heating carpet lining cloth, a vegetable greenhouse heat-insulating quilt and the like, and the advantages of the heat-insulating fabric are fully utilized to replace the original non-environmental-friendly products. With the continuous increase of sales volume and the continuous development of various production enterprises, the industry competition is very strong, and in order to reduce the production cost and seize the market share, the film coating raw materials used by various production enterprises are gradually changed from new materials to old materials. On the other hand, the country advocates green and environmental protection, reduces white pollution, and policies encourage waste recycling, so that waste polyolefin recycling enterprises and laminating production enterprises form a cooperative industrial chain, and 90% of laminating recycled materials are used for replacing new materials, but the original new material extrusion laminating machine uses a perforated plate type filter, namely, a perforated plate (shown in attached figure 3) is manufactured according to the inner diameter of a charging barrel, a filter screen is added on the cross section of the charging barrel, and the passing material flow is filtered. Because of the limitation of the cross section, the filtering area is small, if 80% -90% of the flow film is adopted to recover the material, the dust and impurities in the material flow are too much, the filter screen is blocked quickly, the pressure of the material flow in the charging barrel is increased, the screen needs to be replaced, the screen replacement frequency is caused, the production efficiency is reduced, the product quality is reduced, and the loss is increased. If a large-diameter orifice plate is used instead, the area of the filter screen can be increased, but the extruder head is too large and heavy.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide an extrude compound membrane machine's high efficiency filter, this kind of high efficiency filter adaptation of extruding compound membrane machine drenches the technology production of membrane reclaimed materials, and the net cycle is traded in the extension, improves production efficiency, reduces loss and intensity of labour. The technical scheme is as follows:

the utility model provides a high efficiency filter of extrusion coating machine which characterized by: the filter cartridge is sleeved outside the strut, a plurality of filter through holes are formed in the circumferential side surface of the filter cartridge, the connecting cylinder is sleeved outside the filter cartridge, and the filter screen is coated on the outer surface of the filter cartridge; a first gap is formed between the filter screen and the inner surface of the connecting cylinder to form a first annular material cavity, the left end of the first annular material cavity is in a sealed state, and the right end of the first annular material cavity is provided with a feed inlet; a second gap is formed between the strut and the inner surface of the filter cylinder to form a second annular material cavity, and the left end and the right end of the second annular material cavity are in a sealing state; the support is provided with a plurality of longitudinal runners communicated with the second annular material cavity, each longitudinal runner is vertical to the central axis of the support, a transverse runner communicated with each longitudinal runner is arranged in the middle of the support, and a discharge hole communicated with the transverse runner of the support is arranged on one side of the support.

The right end of the connecting cylinder is provided with a flange, the right end of the connecting cylinder is connected with a charging barrel of an extruder, under the normal condition, the outer diameter of the connecting cylinder is the same as that of the charging barrel, a material flow extruded by the extruder enters a first annular material cavity through the charging barrel and a feeding hole, passes through a filter screen and a filter through hole of a filter cylinder in the flow, enters a second annular material cavity, then is converged into a transverse flow passage through each longitudinal flow passage in the strut and flows out through a discharge hole. Because the expansion area of face of cylinder is great, the filter screen improves greatly with straining the filtration efficiency of a material stream with straining, and the shape of filter screen is the rectangle simultaneously, tailors according to the expansion size of straining the circumference side of a section of thick bamboo, compares circular shape filter screen material saving, tailors the convenience. In the specific implementation, taking a phi 150 screw extruder as an example, more than 8000 phi 4 small holes are drilled on the circumferential side surface of the filter cylinder by using a paper die, and the number of the small holes is 15 times that of the 537 small holes of the perforated plate, namely, the screen changing period is prolonged by 15 times. When impurities and dust on the filter screen block the filter screen and the material flow pressure in the extruder charging barrel rises to a set value, the filter screen needs to be replaced, the whole filter core (comprising the strut, the filter cylinder and the filter screen) is withdrawn to be replaced, and after the replacement of the filter screen is finished, the whole filter core is arranged in the inner cavity of the connecting cylinder, so that the production efficiency is improved, and the loss and the labor intensity are reduced.

As the utility model discloses an optimal scheme, the left end portion and the right-hand member portion of pillar all are equipped with outside bellied annular protruding muscle, strain a section of thick bamboo both ends respectively with the annular protruding muscle contact cooperation of two tip of pillar. Therefore, the left end and the right end of the second annular material cavity are in a sealed state.

As the utility model discloses an optimized scheme, the pillar is including a section of thick bamboo, left end lid and right-hand member lid, and the left end lid is installed at a left end portion of a section of thick bamboo, and the right-hand member lid is installed at a right-hand member portion of a section of thick bamboo, vertical runner, horizontal runner all set up on the left end lid.

As the utility model discloses an optimized scheme, the high efficiency filter of extrusion coating machine still includes the protecting cover, and protecting cover fixed mounting is in the left end portion of connecting cylinder, the discharge gate set up at the protecting cover with between the pillar. When impurities and dust on the filter screen block the filter screen and the pressure of the material flow in the extruder charging barrel rises to a set value, the screen needs to be changed, at the moment, the protecting cover is detached from the left end of the connecting cylinder, the whole filter core (comprising the strut, the filter cylinder and the filter screen) is withdrawn for changing the screen, after the screen is changed, the whole filter core is arranged in the inner cavity of the connecting cylinder, and then the protecting cover is installed at the left end part of the connecting cylinder again.

As a further preferred scheme of the utility model, the left end of protecting cover is equipped with first flange, the left end of connecting cylinder is equipped with the second flange, through the cooperation of bolt and first flange, second flange with protecting cover fixed mounting on the connecting cylinder.

As a further preferred scheme of the present invention, the right end of the protecting cover has an annular embedding portion capable of being embedded between the pillar and the connecting cylinder, the inner surface of the annular embedding portion is provided with a first internal thread, the outer surface of the left end portion of the pillar is provided with an external thread matched with the first internal thread of the annular embedding portion, the protecting cover is locked at the left end portion of the pillar by the matching of the first internal thread and the external thread, and the annular embedding portion is in contact fit with both the connecting cylinder and the filter cylinder; the discharge port comprises a first discharge port arranged on the protective cover and communicated with the transverse flow passage of the support and a second discharge port arranged on the connecting cylinder and communicated with the first discharge port.

As a further preferred aspect of the utility model, the high efficiency filter of the extrusion coating machine still includes the coupling seat, and the coupling seat is installed the left downside of coupling cylinder is equipped with on the coupling seat with the communicating third discharge gate of second discharge gate is equipped with the second internal thread on the internal surface of third discharge gate. The connecting seat is connected with the die neck through a second internal thread and then connected with the die head, and the material flow flowing out of the second discharge port enters the die neck through a third discharge port and then enters the die head.

Compared with the prior art, the utility model, have following advantage:

the efficient filter at the end part of the extruder charging barrel is formed by assembling and matching the support, the filter barrel, the filter screen and the connecting barrel, so that the process production of the laminating reclaimed materials is adapted, the net replacement period is prolonged, the production efficiency is improved, and the loss and the labor intensity are reduced.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a view in the direction A of FIG. 1;

FIG. 3 is a schematic view showing the structure of a multi-well plate of the prior art.

Detailed Description

The following further describes the preferred embodiments of the present invention with reference to the accompanying drawings.

As shown in fig. 1 and 2, the high-efficiency filter of the extrusion film coating machine comprises a support column 1, a filter cylinder 2, a filter screen 3 and a coupling cylinder 4, wherein the filter cylinder 2 is sleeved outside the support column 1, a plurality of filter through holes 201 are formed in the circumferential side surface of the filter cylinder 2, the coupling cylinder 4 is sleeved outside the filter cylinder 2, and the filter screen 3 is covered on the outer surface of the filter cylinder 2; a first gap is formed between the filter screen 3 and the inner surface of the connecting cylinder 4 to form a first annular material cavity 6, the left end of the first annular material cavity 6 is in a sealed state, and the right end of the first annular material cavity 6 is provided with a feed inlet 5; a second gap is formed between the strut 1 and the inner surface of the filter cylinder 2 to form a second annular material cavity 7, and the left end and the right end of the second annular material cavity 7 are in a sealing state; the pillar 1 is provided with a plurality of longitudinal runners 8 communicated with the second annular material cavity 7, each longitudinal runner 8 is vertical to the central axis of the pillar 1, the middle of the pillar 1 is provided with a transverse runner 9 communicated with each longitudinal runner 8, and one side of the pillar 1 is provided with a discharge hole communicated with the transverse runner 9 of the pillar 1.

The left end and the right end of the strut 1 are both provided with annular convex ribs 101 protruding outwards, and two ends of the filter cartridge 2 are respectively in contact fit with the annular convex ribs 101 at the two ends of the strut 1. Thus, the left end and the right end of the second annular material cavity 7 are in a sealing state.

The strut 1 includes a support tube 102, a left end cap 103 and a right end cap 104, the left end cap 103 is mounted on the left end of the support tube 102, the right end cap 104 is mounted on the right end of the support tube 102, and the longitudinal flow passage 8 and the transverse flow passage 9 are both disposed on the left end cap 103.

The high-efficiency filter of the extrusion film coating machine further comprises a protective cover 14, a first flange is arranged at the left end of the protective cover 14, a second flange is arranged at the left end of the connecting cylinder 4, and the protective cover 14 is fixedly arranged on the connecting cylinder 4 through the matching of a bolt 15, the first flange and the second flange; the right end of the protecting cover 14 is provided with an annular embedding part 1401 capable of being embedded between the strut 1 and the connecting cylinder 4, the inner surface of the annular embedding part 1401 is provided with a first internal thread, the outer surface of the left end part of the strut 1 is provided with an external thread matched with the first internal thread of the annular embedding part 1401, the protecting cover 14 is locked at the left end part of the strut 1 through the matching of the first internal thread and the external thread, and the annular embedding part 1401 is in contact fit with the connecting cylinder 4 and the filter cylinder 2; the discharge ports comprise a first discharge port 10 arranged on the protective cover 14 and communicated with the transverse flow passage 9 of the support column 1 and a second discharge port 11 arranged on the connecting cylinder 4 and communicated with the first discharge port 10.

The high-efficiency filter of the extrusion film coating machine further comprises a connecting seat 13, the connecting seat 13 is installed on the left lower side of the connecting cylinder 4, a third discharge hole 12 communicated with the second discharge hole 11 is formed in the connecting seat 13, and second internal threads are formed in the inner surface of the third discharge hole 12.

The right end of the connecting cylinder 4 is also provided with a flange, the right end of the connecting cylinder 4 is connected with a charging barrel 100 of an extruder, under normal conditions, the outer diameter of the connecting cylinder 4 is the same as that of the charging barrel 100, the connecting seat 13 is connected with a die neck through a second internal thread and then is connected with a die head, material flow extruded by the extruder enters a first annular material cavity 6 through the charging barrel 100 and a feeding port 5, passes through a filter screen 3 and a filter through hole 201 of a filter cylinder 2 in the flow, enters a second annular material cavity 7, then is converged into a transverse flow channel 9 through each longitudinal flow channel 8 in the strut 1, then flows out through a first discharging port 10 and a second discharging port 11, enters the die neck through a third discharging port 12, and then enters the die head. Because the expansion area of face of cylinder is great, filter screen 3 improves greatly with straining the filtration efficiency of a section of thick bamboo 2 to the material stream, and filter screen 3's shape is the rectangle simultaneously, tailors according to the expansion size of straining the circumference side of a section of thick bamboo 2, compares circular filter screen material saving, tailors the convenience. In the specific implementation, taking a phi 150 screw extruder as an example, more than 8000 phi 4 small holes are drilled on the circumferential side surface of the filter cylinder 2 by a paper die, and the number of the small holes is 15 times that of the 537 small holes of the perforated plate, namely, the screen changing period is prolonged by 15 times. When the filter screen 3 is blocked by impurities and dust on the filter screen 3 and the material flow pressure in the extruder charging barrel 100 is increased to a set value, the screen needs to be changed, at the moment, the protective cover 14 is detached from the left end of the connecting barrel 4, the whole filter core (comprising the strut 1, the filter barrel 2 and the filter screen 3) is withdrawn for changing the screen, after the screen is changed, the whole filter core is arranged in the inner cavity of the connecting barrel 4, and the protective cover 14 is reinstalled at the left end of the connecting barrel 4, so that the production efficiency is improved, and the loss and the labor intensity are reduced.

In addition, it should be noted that the names of the parts and the like of the embodiments described in the present specification may be different, and all the equivalent or simple changes made according to the structure, the features and the principle of the present invention are included in the protection scope of the present invention. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides a high efficiency filter of extrusion coating machine which characterized by: the filter cartridge is sleeved outside the strut, a plurality of filter through holes are formed in the circumferential side surface of the filter cartridge, the connecting cylinder is sleeved outside the filter cartridge, and the filter screen is coated on the outer surface of the filter cartridge; a first gap is formed between the filter screen and the inner surface of the connecting cylinder to form a first annular material cavity, the left end of the first annular material cavity is in a sealed state, and the right end of the first annular material cavity is provided with a feed inlet; a second gap is formed between the strut and the inner surface of the filter cylinder to form a second annular material cavity, and the left end and the right end of the second annular material cavity are in a sealing state; the support is provided with a plurality of longitudinal runners communicated with the second annular material cavity, each longitudinal runner is vertical to the central axis of the support, a transverse runner communicated with each longitudinal runner is arranged in the middle of the support, and a discharge hole communicated with the transverse runner of the support is arranged on one side of the support.

2. The high efficiency filter of the extrusion coating machine according to claim 1, characterized in that: the left end and the right end of the strut are respectively provided with an annular convex rib protruding outwards, and two ends of the filter cylinder are respectively in contact fit with the annular convex ribs at the two ends of the strut.

3. The high efficiency filter of the extrusion coating machine according to claim 1, characterized in that: the pillar comprises a supporting cylinder, a left end cover and a right end cover, the left end cover is installed at the left end part of the supporting cylinder, the right end cover is installed at the right end part of the supporting cylinder, and the longitudinal flow channel and the transverse flow channel are both arranged on the left end cover.

4. The high efficiency filter of the extrusion coating machine according to claim 1, characterized in that: the high-efficiency filter of the extrusion film coating machine further comprises a protective cover, the protective cover is fixedly installed at the left end part of the connecting cylinder, and the discharge port is arranged between the protective cover and the supporting columns.

5. The high efficiency filter of an extrusion coating machine according to claim 4, characterized in that: the left end of protecting cover is equipped with first flange, the left end of connecting tube is equipped with the second flange, through the cooperation of bolt and first flange, second flange with protecting cover fixed mounting on the connecting tube.

6. The high efficiency filter of an extrusion coating machine according to claim 4, characterized in that: the right end of the protecting cover is provided with an annular embedding part which can be embedded between the strut and the connecting cylinder, the inner surface of the annular embedding part is provided with a first internal thread, the outer surface of the left end part of the strut is provided with an external thread matched with the first internal thread of the annular embedding part, the protecting cover is locked at the left end part of the strut through the matching of the first internal thread and the external thread, and the annular embedding part is in contact fit with the connecting cylinder and the filter cylinder; the discharge port comprises a first discharge port arranged on the protective cover and communicated with the transverse flow passage of the support and a second discharge port arranged on the connecting cylinder and communicated with the first discharge port.

7. The high efficiency filter of the extrusion coating machine according to claim 6, characterized in that: the high-efficiency filter of the extrusion film coating machine further comprises a connecting seat, the connecting seat is installed on the lower left side of the connecting cylinder, a third discharge hole communicated with the second discharge hole is formed in the connecting seat, and a second internal thread is formed in the inner surface of the third discharge hole.