CN112045969A

CN112045969A - Disassembly-free filtering device of extruder

Info

Publication number: CN112045969A
Application number: CN202010895152.8A
Authority: CN
Inventors: 王勇; 王操; 杨芳
Original assignee: Henan Anji Plastic Machinery Co ltd
Current assignee: Henan Anji Plastic Machinery Co ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2020-12-08
Anticipated expiration: 2040-08-31
Also published as: CN112045969B

Abstract

The invention relates to a disassembly-free filtering device of an extruder, which effectively solves the problems that materials are wasted and impurities cannot be removed in time when a filter screen is backflushed and cleaned; the technical scheme for solving the problem is that the device comprises a vertical box body, wherein two feed inlets are formed in the front side of the box body, and two discharge outlets are formed in the rear side of the box body; a T-shaped plate capable of moving up and down is arranged in the middle of the box body; the upper side and the lower side of the partition board are symmetrically provided with fixed blocks fixed on the inner wall of the box body; two filter screens which are symmetrical up and down are arranged in the box body, and the two filter screens are positioned on the upper side and the lower side of the T-shaped plate; a square sleeve is arranged on the outer side of each filter screen and can be pulled leftwards; a material receiving box corresponding to each square sleeve is fixed on the left side surface of the box body; the box is internally provided with an upper movable plate and a lower movable plate which are symmetrically arranged, and the movable plates can move up and down and reset towards the middle of the box. The invention can visually see the blocking state of the filter screen, can realize the backflushing of the filter screen by utilizing the internal pressure, and saves materials.

Description

Disassembly-free filtering device of extruder

Technical Field

The invention relates to the field of extruder filtration, in particular to a disassembly-free filtering device of an extruder.

Background

The extruder is the main molding equipment for manufacturing thermoplastic plastics or plastic products with various shapes by using a plastic molding die, and materials are firstly melted into liquid in a filtering device and then pass through a filtering plate to enter the extruder; after the plastic is melted, particulate impurities can be generated, and if the plastic is not filtered, local defects of products can be caused. The extruder is therefore generally fitted with a sieve. After a period of use, the screens on the extruder tend to clog.

The problem of blockking up at present mainly adopts and trades the change that the wire stitcher carries out the filter screen, and traditional wire stitcher of trading generally adopts the mode of two filter screen pulls to change, and the filter screen after blockking up takes out the back, generally can be stained with more impurity, can only abandon and change newly to because the filter screen temperature is high, still there is danger during the change.

Meanwhile, partial devices clean the filter screen in a material backflushing mode, but when the filter screen is backflushed by using materials of the device, a large amount of filtered materials are wasted, and meanwhile, the materials containing impurities can not be discharged timely. On the other hand, after the internal blockage of the conventional screen changer, the internal blockage situation cannot be directly judged generally, and the replacement time of the filter screen cannot be directly judged, so that the problems need to be solved at present.

Disclosure of Invention

In view of the above situation, the present invention aims to provide a disassembly-free filtering device for an extruder, which can effectively solve the problems of material waste, impurity removal in time, etc. during back flushing of a filter screen.

The technical scheme for solving the problem is that the device comprises a vertically placed box body, wherein two feed inlets which are vertically symmetrical are formed in the front side surface of the box body, and two discharge outlets which are vertically symmetrical are formed in the rear side surface of the box body; a T-shaped plate capable of moving up and down is arranged in the middle of the box body; the T-shaped plate consists of a partition plate in the front-back direction and a bottom plate positioned on the rear side of the partition plate; when the bottom plate is positioned in the middle of the box body, the two discharge ports are not blocked; the middle part of the front side surface of the box body is glass, and the middle part of the front side surface of the partition plate is provided with transverse scale marks; a vertical graduated scale is fixed on the outer side surface of the glass;

the upper side and the lower side of the partition board are symmetrically provided with fixed blocks fixed on the inner wall of the box body; two filter screens which are symmetrical up and down are arranged in the box body, and the two filter screens are positioned on the upper side and the lower side of the T-shaped plate; a square sleeve is arranged on the outer side of each filter screen and can be pulled leftwards; a material receiving box corresponding to each square sleeve is fixed on the left side surface of the box body; the box is internally provided with an upper movable plate and a lower movable plate which are symmetrically arranged, and the movable plates can move up and down and reset towards the middle of the box.

The invention can visually see the blocking state of the filter screen, and is convenient for cleaning in time; meanwhile, the back flow of the materials is adjusted, the back flushing of the filter screen can be realized by utilizing the internal pressure, and the materials are saved.

Drawings

Fig. 1 is a front view of the present invention.

FIG. 2 is a front sectional view (simultaneous feeding) of the present invention.

FIG. 3 is a front sectional view (single side feed) of the present invention.

Fig. 4 is a left side view of the present invention.

Fig. 5 is a perspective view of a T-shaped plate.

Fig. 6 is a perspective view of a square sleeve.

Detailed Description

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

As shown in fig. 1 to 6, the invention comprises a vertically arranged box body 1, wherein the front side surface of the box body 1 is provided with two vertically symmetrical feed inlets 2, and the rear side surface of the box body 1 is provided with two vertically symmetrical discharge outlets 3; a T-shaped plate 4 capable of moving up and down is arranged in the middle of the box body 1; the T-shaped plate 4 is composed of a partition 401 in the front-back direction and a bottom plate 402 positioned at the rear side of the partition 401; when the bottom plate 402 is positioned in the middle of the box body 1, the two discharge ports 3 are not blocked; the middle part of the front side surface of the box body 1 is glass 5, and the middle part of the front side surface of the partition board 401 is provided with a transverse scale mark 6; a vertical graduated scale 7 is fixed on the outer side surface of the glass 5;

the upper side and the lower side of the partition board 401 are symmetrically provided with fixed blocks 8 fixed on the inner wall of the box body 1; two filter screens 9 which are symmetrical up and down are arranged in the box body 1, and the two filter screens 9 are positioned at the upper side and the lower side of the T-shaped plate 4; a square sleeve 10 is arranged on the outer side of each filter screen 9, and the square sleeve 10 can be pulled leftwards; a material receiving box 11 corresponding to each square sleeve 10 is fixed on the left side surface of the box body 1; the box body 1 is internally provided with an upper movable plate 12 and a lower movable plate 12 which are symmetrically arranged, and the movable plates 12 can move up and down and reset towards the middle of the box body 1.

In order to facilitate feeding and discharging, the upper feeding hole 2 and the lower feeding hole 2 are connected together through a tee 13 and a pipeline 14; the upper discharge port 3 and the lower discharge port 3 are connected together through a tee joint 13 and a pipeline 14; simultaneously every feed inlet 2 department all installs valve 15, and valve 15 has casing and inside dog to constitute, is connected with electronic jar 16 on the dog, and electronic jar 16 is flexible to be enabled the dog and blocks or open valve 15.

In order to facilitate the drawing of the square sleeves 10, a transverse guide rod 17 is fixed on the left side surface of each square sleeve 10, a threaded rod 18 corresponding to each guide rod 17 is fixed on the left side surface of the box body 1, a nut 20 is sleeved on each threaded rod 18, and the outer side of each nut 20 is fixedly connected with the left end of each guide rod 17; the threaded rod 18 is driven in rotation by a motor 19.

In order to realize the movement and fixation of the movable plates 12, a plurality of vertical rods 21 are fixed on each movable plate 12, the vertical rods 21 penetrate through the box body 1, and a pressure spring 22 positioned between the end part of each vertical rod 21 and the box body 1 is sleeved on each vertical rod 21; grooves 23 are formed in the side surfaces of one of the upper vertical rods 21 and one of the lower vertical rods 21; two horizontal pins 24 are arranged on the box body 1 in a penetrating way, the pins 24 are sleeved with tension springs, the end parts of the pins 24 are provided with inclined planes and can be arranged in the grooves 23, so that the movable plate 12 cannot move outwards.

In order to conveniently control the pin 24, a wedge block 25 is fixed on an expansion rod of the electric cylinder 16, and the electric cylinder 16 extends to enable the pin 24 to be separated from the groove 23 on the vertical rod 21 when the valve 15 is closed and the wedge block 25 is driven to move.

In order to better realize the installation of the movable plate 12 and the sealing between the movable plate 12 and the inner side wall of the box body 1, a sliding groove which is recessed is formed on the inner side surface of the box body 1, and the left edge and the right edge of the movable plate 12 are arranged in the sliding groove.

When the invention is used, firstly, the upper and lower feed ports 2 of the box body 1 are respectively connected to different extruders, the discharge pressures of the two extruders are adjusted to be the same, and then the two discharge ports 3 on the rear side surface of the box body 1 are connected to the feed ports 2 of the die through the tee joint 13 and the pipeline 14.

After connecting whole device, can make two feed inlets 2 on the box 1 be opened simultaneously through driving two electronic jars 16 this moment, later through the plastics that melt can enter into the inside of box 1 simultaneously through two feed inlets 2. Because the extruder has certain pressure, after entering the box body 1, the material firstly passes through the square sleeve 10, then passes through the filter screen 9, is filtered by the filter screen 9 and then enters a space between the filter screen 9 and the T-shaped plate 4, and because the discharge port 3 is arranged between the filter screen 9 and the T-shaped plate 4, the material flows out of the discharge port 3; because a T-shaped plate 4 in the box body 1 is a boundary and is divided into an upper passage and a lower passage, the upper passage and the lower passage can filter and extrude materials.

Meanwhile, the T-shaped plate 4 is positioned in the middle and can move up and down, so when the upper feed port 2 and the lower feed port 2 feed materials simultaneously, the upper side and the lower side of the materials can simultaneously extrude the partition plate 401 in the T-shaped plate 4, and the T-shaped plate 4 is positioned in the middle; at this time, it can be seen from the glass 5 and the scale 7 that the scale line 6 at the middle position of the partition 401 corresponds to the middle O scale of the scale 7, and it is proved that the pressures at the upper and lower sides are equal at this time, and the filter screen 9 is not blocked.

After the filter screen 9 on one side is blocked, the filter screen 9 on the upper side is blocked as an example for explanation, at this time, the trafficability of the filter screen 9 on the upper side is deteriorated, and the material passing through the filter screen 9 is reduced, so that the pressure of the material on the upper side pressing the T-shaped plate 4 is also reduced, and at this time, the T-shaped plate 4 is not kept in the middle position but is shifted upwards; the distance of the scale mark 6 on the partition board 401 moving relative to the scale 7 can be clearly seen through the glass 5, so that the filter screen 9 on which side is blocked can be conveniently judged, and the blocking degree of the filter screen 9 can be visually seen.

After the filter screen 9 of upside blockked up, the feed inlet 2 of upside is closed through the extension of the electronic jar 16 of control upside this moment, and simultaneously electronic jar 16 extends the back, and the wedge 25 of fixing on electronic jar 16's the telescopic link also can extend, makes the pin 24 of top remove forward to make the rear end of pin 24 break away from chucking recess 23, montant 21 is not being fixed this moment, and fly leaf 12 can move about.

After the feed inlet 2 at the upper side is closed, the pressure of the upper part of the material is removed, namely, the upper side surface of a partition plate 401 in a T-shaped plate 4 is not subjected to extrusion force, the extrusion force of the lower side surface of the partition plate 401 is increased, at the moment, the material pushes the T-shaped plate 4 to move upwards, the material between the upper side partition plate 401 and an upper side movable plate 12 is extruded in the moving process, in the initial moving process, the material is extruded from the upper discharge outlet 3 because the upper discharge outlet 3 is not blocked by a bottom plate 402 in the T-shaped plate 4, and the pressure of the material at the moment is low; the movable plates 12 above are not enough to be pushed to move upwards, then after the T-shaped plates 4 continue to move upwards, the bottom plates 402 in the T-shaped plates 4 can block the discharge holes 3 above, the T-shaped plates 4 continue to move upwards at the moment, so that the materials between the upper side surface of the partition plate 401 and the movable plates 12 above are integrally extruded upwards, and the materials reversely pass through the filter screen 9 at the moment, so that impurities attached to the filter screen 9 above are washed away; then the material containing impurities is positioned in the square sleeve 10 above; the threaded rod 18 is driven to rotate by the starting motor 19, at this time, the guide rod 17 drives the square sleeve 10 to be drawn out leftwards, and the drawn-out material containing impurities falls into the material receiving box 11. Then the square sleeve 10 is reset, so that the cleaning of the filter screen 9 is realized; the movable plate 12 is also reset. When the material receiving opening of top needs to be opened again, only need drive electronic jar 16, make electronic jar 16's telescopic link shrink, the material receiving opening of top this moment can be opened again, and pin 24 also can block once more in the recess 23 of montant 21 simultaneously, makes fly leaf 12 fixed.

Clear up filter screen 9 through the above-mentioned mode, the top can not be invaded to the normal filterable material that is in T template 4 below at first, and utilize the pressure of below material, promote the in-process that T template 4 shifted up, the material that lies in between side and the top fly leaf 12 on baffle 401 can at first discharge through the bin outlet of top, the waste of material has been reduced, later after the discharge gate 3 of top is blockked up the back, T template 4 continues to shift up a segment distance, make the material shift up, recoil filter screen 9, the material of this part only has a small part, the waste of material has been reduced, utilize square sleeve 10 to make the discharge entire system that contains the material that impurity is many can be timely simultaneously, avoid influencing subsequent use.

The above is a first use method of the present device, that is: the upper and lower material receiving ports are opened simultaneously, the upper and lower material feeding ports are connected with different extruders respectively, the outlet pressures of the two extruders are adjusted to be communicated, and the two extruders extrude simultaneously through the upper and lower channels of the box body 1 in the same manner; when one of them jam back, through observing the migration distance of baffle 401, can be quick go out which side of the difference and block up to and the condition of jam, be convenient for quick clear net. Through this kind of mode, can accelerate the extrusion speed of material, conveniently clear up filter screen 9 simultaneously, be convenient for timely observation filter screen 9's the jam condition.

The second use method of the device is as follows: the upper and lower feed inlets 2 are connected to the discharge outlet 3 of the same extruder through a tee 13, and only the upper or lower feed inlet 2 is opened each time, in this state, the partition 401 is at the uppermost or lowermost of the stroke, and no indication effect is generated at this time; only the upper channel or only the lower channel is filtered in the box body 1 at the same time; two feed inlets 2 about opening in turn through regularly going on, through this kind of mode, realize not shutting down and filter to do not shut down and carry out the clearance of filter screen 9.

The device is characterized in that a filter screen 9, a square sleeve and a movable plate 12 are symmetrically arranged in a box body 1, and a T-shaped plate 4 capable of moving up and down is arranged in the middle of the box body, so that two filter channels which are not communicated with each other are arranged in the box body 1; through the design of the T-shaped plate 4, when one channel is not filtered, the pressure of the material in the channel at the other side can enable the filter screen 9 at the side which is not filtered to be backflushed, so that the filter screen 9 is cleaned; the filter screen 9 does not need to be disassembled, and the cleaning speed of the filter screen 9 is improved; meanwhile, the back-flushing material quantity is less, and a large amount of waste of materials is avoided.

In this device, through the ingenious position of arranging discharge gate 3, at the in-process that T template 4 removed to certain side, can make the material of this side at first extrude from discharge gate 3, remaining material can be extruded to stepping down through fly leaf 12 has realized the whole reverse flow of material, carries out comprehensive swift clearance to filter screen 9.

In the device, the feeding port 2 and the movable plate 12 on the same side are in a mutually linked state, namely the feeding port 2 is opened, the movable plate 12 is fixed, the feeding port 2 is closed, and the movable plate 12 can move; when the filtering is performed normally, a movable room is left between the movable plate 12 and the side plate of the box body 1; when filtering is needed, the feed inlet 2 is closed, the materials flow in a reverse direction, and the abdicating of the materials can be realized by moving the movable plate 12; the cooperation is ingenious, so that the filter screen 9 can be backflushed.

In the device, the square sleeve 10 is arranged on the outer side of the filter screen 9, and the square sleeve 10 only plays a role of a channel during normal filtering and cannot interfere the flow of materials; when back flushing is required, the material containing the impurities can now enter the square sleeve 10 and can be discharged by pulling the square sleeve 10.

In this device, when two feed inlets 2 feed simultaneously, can utilize filter screen 9 to block up the back, the change of pressure drives T template 4's removal to observe the jam state of both sides filter screen 9, be convenient for timely the mediation operation of carrying on filter screen 9.

This device is connected to same extruder when two feed inlets 2 simultaneously to when utilizing two upper and lower filter screens 9 to filter respectively, can realize not shutting down filtering and clear net through the on-off state of regularly changing feed inlet 2.

Claims

1. The disassembly-free filtering device of the extruder comprises a vertically placed box body (1), and is characterized in that two feed inlets (2) which are vertically symmetrical are formed in the front side surface of the box body (1), and two discharge outlets (3) which are vertically symmetrical are formed in the rear side surface of the box body (1); a T-shaped plate (4) capable of moving up and down is arranged in the middle of the box body (1); the T-shaped plate (4) consists of a partition plate (401) in the front-back direction and a bottom plate (402) positioned on the rear side of the partition plate (401); when the bottom plate (402) is positioned in the middle of the box body (1), the two discharge holes (3) are not blocked; the middle part of the front side surface of the box body (1) is glass (5), and the middle part of the front side surface of the partition board (401) is provided with transverse scale marks (6); a vertical graduated scale (7) is fixed on the outer side surface of the glass (5);

the upper side and the lower side of the partition board (401) are symmetrically provided with fixed blocks (8) fixed on the inner wall of the box body (1); two filter screens (9) which are symmetrical up and down are arranged in the box body (1), and the two filter screens (9) are positioned on the upper side and the lower side of the T-shaped plate (4); a square sleeve (10) is arranged on the outer side of each filter screen (9), and the square sleeve (10) can be pulled leftwards; a material receiving box (11) corresponding to each square sleeve (10) is fixed on the left side surface of the box body (1); the box body (1) is internally provided with an upper movable plate (12) and a lower movable plate (12) which are symmetrically arranged, and the movable plates (12) can move up and down and reset towards the middle of the box body (1).

2. The disassembly-free filtering device of the extruder is characterized in that the upper feeding hole (2) and the lower feeding hole (2) are connected together through a tee joint (13) and a pipeline (14); the upper discharge port (3) and the lower discharge port (3) are connected together through a tee joint (13) and a pipeline (14); simultaneously every feed inlet (2) department all installs valve (15), and valve (15) have casing and inside dog to constitute, are connected with electronic jar (16) on the dog, and electronic jar (16) are flexible to be enabled the dog and stop or open valve (15).

3. The disassembly-free filtering device of the extruding machine as claimed in claim 1, wherein a transverse guide rod (17) is fixed on the left side surface of each square sleeve (10), a threaded rod (18) corresponding to each guide rod (17) is fixed on the left side surface of the box body (1), a nut (20) is sleeved on each threaded rod (18), and the outer side of each nut (20) is fixedly connected with the left end of each guide rod (17); the threaded rod (18) is driven by a motor (19) to rotate.

4. The disassembly-free filtering device of the extruding machine as claimed in claim 1, wherein a plurality of vertical rods (21) are fixed on each movable plate (12), the vertical rods (21) penetrate through the box body (1), and a pressure spring (22) positioned between the end of each vertical rod (21) and the box body (1) is sleeved on each vertical rod (21); a groove (23) is formed in the side surface of one of the upper vertical rods (21) and one of the lower vertical rods (21); two horizontal pins (24) are arranged on the box body (1) in a penetrating way, a tension spring is sleeved on each pin (24), and the end parts of the pins (24) are provided with inclined planes and can be arranged in the grooves (23) so that the movable plates (12) cannot move outwards.

5. The disassembly-free filtering device of the extruding machine is characterized in that a wedge-shaped block (25) is fixed on the telescopic rod of the electric cylinder (16), and the electric cylinder (16) is extended to enable the pin (24) to be separated from the groove (22) on the vertical rod (21) when the electric cylinder (16) drives the wedge-shaped block (25) to move when the valve (15) is closed.