CN214027121U

CN214027121U - Membrane head filtering device of modified plastic extruder

Info

Publication number: CN214027121U
Application number: CN202023135636.7U
Authority: CN
Inventors: 张大松; 闫东广; 张颖
Original assignee: Jiangsu Suneng New Materials Technology Co ltd
Current assignee: Jiangsu Suneng New Materials Technology Co ltd
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-08-24
Anticipated expiration: 2030-12-23

Abstract

The utility model relates to the field of plastic extruders, in particular to a membrane head filtering device of a modified plastic extruder, which comprises a machine head with a die, wherein the machine head is connected with an extruding mechanism, one end of the extruding mechanism, which is close to the machine head, is provided with a drawing plate which can slide relative to the extruding mechanism, and the drawing plate is arranged perpendicular to the length direction of the extruding mechanism; the drawing plate is detachably connected with two filter screens, and the first filter screen or the second filter screen is positioned in an extrusion channel of the extrusion mechanism; the utility model discloses set up slidable pull board in the passageway of extrusion mechanism, set up the detachable filter screen on the pull board, after one of them filter screen is blockked up, slide pull board and make another filter screen place in extruding the passageway, can realize not shutting down and change the filter screen like this, reduce the equipment downtime; the utility model discloses a pull board changes its position through the automatic control of cylinder, accomplishes to switch in time swiftly to the filter screen is by the fixture block, dismantles the change after convenient the jam.

Description

Membrane head filtering device of modified plastic extruder

Technical Field

The utility model relates to a plastics extruder field, concretely relates to modified plastic extruder membrane head filter equipment.

Background

The main machine of the plastic extruder is an extruding machine which consists of an extruding system, a transmission system and a heating and cooling system. Wherein the extrusion system comprises a screw, a barrel, a hopper, a head, and a die, and the plastic is plasticized into a homogeneous melt by the extrusion system and continuously extruded by the screw under a pressure established in the process.

The raw materials of plastic granules can have foreign particles because of reasons such as manufacturing and transportation, and these foreign particles can not get rid of at the extrusion melting in-process, and these particulate matters are extruded and then are caused product quality to descend, consequently, increase the filter screen and be used for filtering impurity at membrane head department among the existing equipment, but still have the problem that, the filter screen is after long-time the use, because the reason of attached impurity, the resistance of filter screen increases, need to change the filter screen, just need shut down and change the screen this moment, it is comparatively time-consuming.

Therefore, based on practical experience and professional knowledge which are abundant for many years in the design and manufacture of the product, the inventor of the present application repeatedly tests and adjusts the new problems so as to create a membrane head filtering device of the modified plastic extruder, and the membrane head filtering device has the effect of being easy to replace a filter screen and is used for continuously improving the grade and the competitiveness of the product.

Prior art documents:

patent document 1: CN211221588U high-efficient type is retrieved and is filtered die head device

Patent document 2: CN208438601U double-die-head filtering device for plastic granulator

Disclosure of Invention

The utility model aims to provide a can be quick will extrude the filter mechanism that is stopped up in the passageway and change into new filter mechanism, realize not shutting down or as few as possible delays down the down time, consequently provide a modified plastic extruder membrane head filter equipment.

In order to achieve the above purpose, the utility model adopts the following scheme: the membrane head filtering device of the modified plastic extruder comprises a machine head with a die, wherein the machine head is connected with an extruding mechanism, one end of the extruding mechanism, which is close to the machine head, is provided with a drawing plate which can slide relative to the extruding mechanism, and the drawing plate is arranged in a direction vertical to the length direction of the extruding mechanism;

the device comprises a drawing plate and is characterized in that two filter screens are detachably connected to the drawing plate, a first filter screen or a second filter screen is located in an extrusion channel of an extrusion mechanism, and a cylinder used for driving the drawing plate to reciprocate is fixed outside the extrusion mechanism so as to switch the position state of the first filter screen or the second filter screen relative to the extrusion channel.

Preferably, the pulling plate is divided into a first filtering area and a second filtering area, wherein one filtering area is attached to the extruding mechanism, and the other filtering area is located outside the extruding mechanism.

Preferably, the first filtering area and the second filtering area are both provided with filtering grooves corresponding to the extrusion channels, and the filter screen is fixed in the filtering grooves by a clamping block with a hole.

Preferably, the inner wall of the filter tank is provided with a step, the outer wall of the fixture block is provided with a clamping portion corresponding to the step, and the fixture block is clamped into the filter tank from the direction of fluid flow in the extrusion channel.

Preferably, the fixture block is provided with uniformly distributed round holes, and the diameter of the round holes is 3-5 mm.

Preferably, the drawing plate slides transversely.

Preferably, the cylinder is fixed to an outer wall of the extrusion mechanism by four fixing rods.

The utility model provides a modified plastic extruder membrane head filter equipment compares with prior art, has following substantive characteristics and progress:

1. the utility model discloses set up slidable pull board in the passageway of extrusion mechanism, set up the detachable filter screen on the pull board, after one of them filter screen is blockked up, slide pull board and make another filter screen place in extruding the passageway, can realize not shutting down and change the filter screen like this, reduce the equipment downtime;

2. the utility model discloses a pull board changes its position through the automatic control of cylinder, accomplishes to switch in time swiftly to the filter screen is by the fixture block, dismantles the change very easily after blockking up, and whole switching does not need use tools with the dismantlement in-process, and degree of automation is high.

Drawings

FIGS. 1A-B are schematic structural views of a membrane head filtering device of a modified plastic extruder in an embodiment of the present invention;

FIG. 2 is a schematic view of the installation position of the drawing plate on the extruding mechanism in the embodiment of the present invention;

fig. 3 is a schematic structural view of a drawing plate in an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a fixture block in the embodiment of the present invention.

Reference numerals: 1. a machine head; 11. a mold; 12. an extrusion mechanism; 2. a cylinder; 21. fixing the rod; 3. a drawing plate; 301. a first filtration zone; 302. a second filtration zone; 31. a clamping block; 311. a fastening part; 312. a boss; 313. a circular hole; 32. a filter tank; 4. and (4) a filter screen.

Detailed Description

The following detailed description of embodiments of the present invention will be made with reference to the accompanying drawings.

The invention aims to solve the problem that a filter component arranged in an extrusion mechanism 12 can be replaced in time after being blocked, and the position states of two filter screens on a drawing plate 3 relative to an extrusion channel can be rapidly replaced by arranging the drawing plate 3 which can slide relative to the extrusion mechanism 12, so that rapid switching is realized, and the downtime is reduced.

As shown in figures 1 and 2, the invention provides a membrane head filtering device of a modified plastic extruder, which is mainly used on an extruder for processing modified plastics, the front end of the extruder is an extruding mechanism 12, a machine head 1 is connected with the extruding end of the extruding mechanism 12, wherein a screw driven by a motor is arranged in the extruding mechanism 12, the screw can be in a single screw form or a double screw form, an extruding channel is arranged outside the screw, extruded raw materials in a molten state are extruded from the extruding channel to the direction of the machine head 1, and then the raw materials are constructed into an extruding strip by a mould 11 arranged at the front end of the machine head 1, wherein the mould 11 is detachably arranged on the machine head 1 through bolts and can be replaced according to different products.

Because the raw material particles can have impurity particles which can not be melted due to cleaning, packaging, transportation and the like, and the quality of the product can be affected if the impurity particles are directly extruded, the impurity particles are filtered by the filtering component before being constructed into an extruded strip through the machine head 1, in the embodiment, one end of the extruding mechanism 12 close to the machine head 1 is provided with a drawing plate 3 which can slide relative to the extruding mechanism, and the drawing plate 3 is arranged perpendicular to the length direction of the extruding mechanism 12, namely the drawing direction of the drawing plate 3 is perpendicular to the direction in which the melted material in the extruding channel is extruded.

Referring to fig. 1, two filter screens 4 are detachably connected to the pull plate 3, the first filter screen or the second filter screen is located in an extrusion channel (not shown) of the extrusion mechanism, and an air cylinder 2 for driving the pull plate to reciprocate is fixed outside the extrusion mechanism 12 to switch the position state of the first filter screen or the second filter screen relative to the extrusion channel.

Wherein the cylinder 2 is fixed to the outer wall of the extrusion mechanism 12 by four fixing rods 21.

Preferably, the cylinder 2 and the drawing plate 3 are arranged laterally.

In this embodiment, after the filter screen 4 in the extrusion channel is blocked, the filter screen can be detected by a pressure detection system of the extruder itself, when the internal pressure increases, the blockage occurs, the control end controls the electromagnetic valve on the cylinder 2 to stretch or contract the cylinder 2, the cylinder 2 has two position states, one is an ejection state and the other is a reset state, as shown in fig. 1, fig. 1A-1B show that the cylinder 2 changes from the reset state to the ejection state, in this process, the first filter screen (left side) moves from the outer side of the extrusion mechanism 12 to the extrusion channel, and the second filter screen (right side) moves from the extrusion channel to the outer side of the extrusion mechanism 12, so as to realize the replacement of the blocked filter screen into a good filter screen, and when the filter screen is blocked again, the state is changed from fig. 1B to the state shown in fig. 1A.

Referring to fig. 3, the drawing plate 3 is divided into a first filtering area 301 and a second filtering area 302, one filtering area is attached to the extruding mechanism 12 to maintain the sealing performance of the extruding channel, and the other filtering area is located outside the extruding mechanism 12 to facilitate replacement of the filter screen 4 in the filtering area.

The first filtering area 301 and the second filtering area 302 are both provided with filtering grooves 32 corresponding to the extrusion channel, the filter screen 4 is fixed in the filtering grooves 32 by a fixture block 31 with a hole, the inner wall of the filtering groove 32 is provided with a step, the outer wall of the fixture block 31 is provided with a clamping part 311 (shown in fig. 4) corresponding to the step 32, the fixture block 31 is clamped in the filtering grooves 32 from the direction of fluid flow in the extrusion channel, and the fixture block 31 is in clearance fit with the filtering grooves 32.

So, when installing filter screen 4, arrange filter screen 4 in the filter tank 32 outside, the area of filter screen 4 is greater than the area of filter tank 32, then use fixture block 31 to press to filter tank 32 direction, wherein, fixture block 31 is constructed into the shape of boss, have one with step complex block portion 311, upwards extend a boss 312 again, make the holistic thickness of fixture block 31 equal to the thickness of pull board 3, fixture block 31 still sets up the evenly distributed's of lining up its both sides terminal surface round hole 313, wherein, the diameter of round hole 313 is 3-5mm, the big footpath end flow direction filter screen 4 of fused material from fixture block 31, this process fixture block 31 is compressed tightly by the pressure of fluid, during the dismantlement, directly strike one side that fixture block 31 took filter screen 4 can make fixture block 31 and filter tank 32 separation.

In combination with the above embodiment, the utility model discloses a cylinder 2 drives ejecting and the reseing of pull board 3, can switch two filter screen 4 on the pull board 3 and extrude the cooperation state between the passageway, realizes the filter screen 4 that the change that can be quick is blockked up, reduces down time to guarantee machining efficiency.

The present invention is not limited to the specific technical solutions described in the above embodiments, and other embodiments can be provided in addition to the above embodiments. It should be understood by those skilled in the art that any modifications, equivalent substitutions, improvements and the like that are made within the spirit and principle of the present invention are within the scope of the present invention.

Claims

1. A membrane head filtering device of a modified plastic extruder comprises a machine head with a die, wherein the machine head is connected with an extruding mechanism, and the membrane head filtering device is characterized in that one end of the extruding mechanism, which is close to the machine head, is provided with a pull plate which can slide relative to the machine head, and the pull plate is arranged perpendicular to the length direction of the extruding mechanism;

2. The membrane head filtering device of the modified plastic extruder as claimed in claim 1, wherein the drawing plate is divided into a first filtering area and a second filtering area, one filtering area is attached to the extruding means, and the other filtering area is located outside the extruding means.

3. The membrane head filtering device of the modified plastic extruder as claimed in claim 2, wherein the first filtering area and the second filtering area are both provided with filtering grooves corresponding to the extrusion channels, and the filtering net is fixed in the filtering grooves by a fixture block with holes.

4. The membrane head filtering device of the modified plastic extruder as claimed in claim 3, wherein the inner wall of the filtering tank is provided with a step, the outer wall of the clamping block is provided with a clamping portion corresponding to the step, and the clamping block is clamped into the filtering tank from the direction of fluid flow in the extrusion channel.

5. The membrane head filtering device of the modified plastic extruder as claimed in claim 3, wherein the fixture block is provided with uniformly distributed round holes, and the diameter of the round holes is 3-5 mm.

6. The modified plastic extruder membrane head filter device of any one of claims 1 to 5, wherein the drawing plate slides laterally.

7. The modified plastic extruder membrane head filtration device of claim 6, wherein the air cylinder is fixed to the outer wall of the extrusion mechanism by four fixing rods.