CN210552353U

CN210552353U - Plastic melt filter without silk screen

Info

Publication number: CN210552353U
Application number: CN201921395147.XU
Authority: CN
Inventors: 林甬
Original assignee: Zhejiang Leeny Technology Co ltd
Current assignee: Zhejiang Leneng Technology Co.,Ltd.
Priority date: 2019-08-26
Filing date: 2019-08-26
Publication date: 2020-05-19
Anticipated expiration: 2029-08-26

Abstract

The utility model provides a plastic melt filter without silk screen, which comprises a hollow box body, wherein the inside of the box body is rotatably connected with a filter screen plate, the filter screen plate divides the inner cavity of the box body into a feeding cavity and a discharging cavity, and the box body is provided with a feeding hole, a trash discharging hole and a discharging hole; the box body is provided with a rotating shaft which is connected with the filter screen plate; the feed chamber is inside to be fixed with the scraper, and the scraper is contradicted the filter plate and will be filtered impurity on the plate and scrape down, and the scraper can block the impurity of scraping down and will scrape down and guide to row's miscellaneous mouthful department simultaneously. The rotating shaft is driven by a driving piece such as a motor and the like and drives the filter screen plate to rotate. Impurities attached to the filter screen plate are scraped by the scraper and move to the impurity discharging port under the guide of the scraper. The scraper blocks the scraped impurities so that the impurities do not easily bypass the scraper and flow back into the treated area. And because scraper fixed connection is in the feeding chamber, so the impurity of being scraped can not rotate around the rotation axis in the feeding chamber, and can discharge from arranging the miscellaneous mouthful comparatively fast.

Description

Plastic melt filter without silk screen

Technical Field

The utility model relates to a no silk screen filter technical field especially relates to a no silk screen plastics fuse-element filter.

Background

At present, chinese patent with publication number CN109822857A discloses a no silk screen filter, including box and filter element, the inside of box is formed with the cavity, filter element including set up in the inside filter plate of cavity, just filter plate will the cavity is separated and is become feeding chamber and play material chamber, be provided with the UNICOM on the box in the feed inlet and the row miscellaneous mouth in feeding chamber communicate in the discharge gate in play material chamber, arrange miscellaneous parts set up in arrange miscellaneous mouthful department, it is connected with the pivot to rotate on the box, the one end of pivot stretches into the feeding chamber and is connected with the scraper, the scraper support tightly in filter plate, the other end protrusion of pivot in the box is connected with the driving piece, the driving piece is used for the drive the pivot rotates.

When the plastic melt filtering device is used, a plastic melt to be filtered is continuously injected into the feeding cavity from the feeding hole, the plastic melt in the feeding cavity penetrates through the filtering screen plate under the action of melt pressure and enters the discharging cavity, and impurities mixed in the plastic melt are blocked by the filtering screen plate and are attached to the filtering screen plate. Meanwhile, the scraper is controlled to rotate by the driving piece, so that impurities on the filter screen plate are scraped off, and the impurities are pushed to move in the feeding cavity. However, in the process that the scraper pushes the impurities to move in the feeding cavity, the impurities can be discharged through the impurity discharging port only when the impurities move to the impurity discharging port. Also in this process, part of the impurities easily flows back via the gap between the scraper and the feed chamber into the area which has been scraped by the scraper.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a no silk screen plastics fuse-element filter, it has the impurity of being scraped by the scraper can discharge from arranging miscellaneous mouthful comparatively fast, and the impurity of being scraped by the scraper is difficult for flowing back to the region of having scraped.

In order to solve the technical problem, the technical scheme of the utility model is that: a plastic melt filter without a screen mesh comprises a hollow box body, wherein a screen plate is arranged in the box body, the screen plate divides an inner cavity of the box body into a feeding cavity and a discharging cavity, a feeding hole and a impurity discharging hole which are communicated with the feeding cavity are formed in the box body, a discharging hole which is communicated with the discharging cavity is formed in the box body, and the screen plate is rotatably connected with the box body; a rotating shaft penetrates through the box body, is connected to the filter screen plate and is used for driving the filter screen plate to rotate circumferentially; the scraper is fixed in the feeding cavity, abuts against the filter screen plate and is used for scraping impurities on the filter screen plate, and can block the scraped impurities from passing through the scraper and guide the scraped impurities to the impurity discharge opening.

Through above-mentioned technical scheme, during the use, the plastics fuse-element that will wait to filter is continuously poured into the feeding chamber from the feed inlet, and later the plastics fuse-element in the feeding chamber enters into ejection of compact chamber under the effect of fuse-element pressure, and the plastics fuse-element in the ejection of compact chamber is discharged from the discharge gate under the effect of fuse-element pressure, and the impurity of mingling in the plastics fuse-element is obstructed by filter plate, and some impurity is attached to on filter plate under the effect of fuse-element pressure. Meanwhile, the end part of the rotating shaft protruding out of the box body is connected with driving parts such as a motor, and the driving parts drive the filter screen plate to rotate circumferentially through the rotating shaft. In the process of rotating the filter screen plate, impurities attached to the filter screen plate are scraped by the scraper, the scraped impurities are close to the impurity discharging port, and then the scraped impurities gradually move to one side of the impurity discharging port under the guide of the scraper. The scraper can block the scraped impurities, so that the impurities cannot easily pass through the scraper and flow back to the area processed by the scraper, namely, as long as the filter screen plate scraped by the scraper has better passing performance. And because scraper fixed connection is in the feeding chamber, so in the use, the impurity of being scraped can not rotate around the rotation axis in the feeding chamber for the impurity of being scraped can be comparatively fast be followed and row miscellaneous mouthful discharge. And the contact area between the scraper and the filter screen plate is small, the wear of the filter screen plate is slow, and the service life can be prolonged to a certain extent.

Preferably, a bulge is arranged on the inner wall of the feeding cavity far away from the filter screen plate, and the rotating shaft penetrates through the middle part of the bulge; one end of the scraper is connected with the bulge, and the other end of the scraper is connected with the inner side wall of the feeding cavity.

Through above-mentioned technical scheme, the arch can be fixed a position the pivot for the pivot is difficult for taking place to rock in the use, and connects and is difficult for appearing the slope at the epaxial filter plate of commentaries on classics, makes filter plate's rotation become more smooth and easy, and filter plate is difficult for taking place local wear, has promoted this filter plate's life to a certain extent. One end of the scraper is connected with the bulge, so that the gap between the scraper and the bulge is eliminated, and impurities scraped by the scraper are not easy to flow back to the treated area from the gap between the scraper and the bulge. The other end of the scraper is connected to the inner side wall of the feeding cavity, so that a gap between the scraper and the inner side wall of the feeding cavity is eliminated, and scraped impurities are not easy to flow back to a treated area from the gap between the scraper and the inner side wall of the feeding cavity. Meanwhile, the contact area between the scraper and the filter screen plate is small, so that the friction between the scraper and the filter screen plate can be effectively reduced, the maintenance period is prolonged, and the filter is more convenient to use.

Preferably, an elastic force application member is arranged on the scraper, and the elastic force application member applies an elastic force to the scraper to point to one side of the filter screen plate, so that the scraper abuts against the filter screen plate.

Through above-mentioned technical scheme, support the scraper tightly on filter plate through elasticity application of force spare to this guarantees that the scraper can be contradicted in filter plate all the time at filter plate pivoted in-process all the time, even filter plate takes place certain deformation towards the terminal surface in feeding chamber. Meanwhile, the scraper which is always tightly propped on the filter screen plate can more effectively remove the impurities attached to the filter screen plate, so that the filter screen plate can have better passing performance and can filter the plastic melt more quickly.

Preferably, the elastic force application part comprises a first spring and a second spring, the first spring is arranged inside the protrusion and connected with the scraper, and the second spring is arranged in the inner wall of the feeding cavity and connected with the scraper.

Through the technical scheme, the first spring and the second spring are arranged at the two ends of the scraper respectively and act together, so that the scraper is not prone to single-side tilting.

Preferably, the feeding intracavity portion is provided with the flow distribution plate, the flow distribution plate quilt the pivot runs through, a plurality of diffluent holes have been seted up on the flow distribution plate, the flow distribution plate with the relative department of feed inlet is formed with material blocking portion, material blocking portion is used for hindering the plastics fuse-element that the feed inlet flows to order about the plastics fuse-element to flowing to material blocking portion both sides.

Through above-mentioned technical scheme, during the use, the plastics fuse-element that flows out from the feed inlet strikes on keeping off the material portion, later flows to keeping off material portion both sides to finally discharge from reposition of redundant personnel hole. After shunting the plastics fuse-element, the pressure that comes from the plastics fuse-element that filter plate received is comparatively even for filter plate is difficult to rotate the condition that the unilateral perk takes place for filter plate rotates comparatively smoothly, and filter plate's border is difficult for taking place wearing and tearing, has increased filter plate's life to a certain extent, makes filter plate's change cycle can prolong.

Preferably, the scraper is abutted against between the splitter plate and the filter screen plate, a sundry blocking part is formed on the splitter plate, one side of the sundry blocking part is abutted against the scraper, and the other side of the sundry blocking part extends towards one side of the sundry discharging port.

Through the technical scheme, the impurity blocking part is matched with the scraper to form a semi-closed chamber, and the direction of the opening of the chamber is opposite to the rotating direction of the filter screen plate. When the scraper scrapes off impurities on the filter screen plate, the impurities can enter the chamber and move to one side of the impurity discharging port along the surface of the scraper. And the semi-closed chamber makes it difficult for scraped impurities to flow back into the area that has been treated by the scraper.

Preferably, the diverter plate divides the feeding cavity into a diverter chamber at one side far away from the filter screen plate and a filter chamber at one side close to the filter screen plate, and the end area of the diverter chamber is smaller than that of the filter chamber.

Through above-mentioned technical scheme, the tip area of shunting room is less than the tip area of filter chamber, that is to say the space of shunting room is less than the space of filter chamber, sets up like this, can guarantee this filter on the one hand to the filtration efficiency of plastic melt, and on the other hand can reduce the stock in the feeding chamber. The material stock in the feeding cavity is reduced because the material stock remained in the feeding cavity for a long time can be carbonized after being continuously heated, and great influence is caused on the quality of the plastic melt.

Preferably, the rotating shaft is provided with a discharge hole communicated with the discharge cavity, and a plurality of through holes are circumferentially distributed on the side wall of the rotating shaft and used for communicating the discharge hole with the discharge hole.

Through above-mentioned technical scheme, the plastics fuse-element in the play material chamber enters into the relief hole under the effect of fuse-element pressure, later enters into discharge gate department via the through-hole to finally discharge via the discharge gate. With through-hole circumference distribution in the pivot, like this at pivot pivoted in-process, the relief hole in the pivot can be through one or more through-holes and discharge gate UNICOM all the time, and the plastics fuse-element in the ejection of compact chamber can enter into in the discharge gate in succession.

Preferably, a buffer chamber is arranged in the box body, the rotating shaft penetrates through the buffer chamber, and the through hole is communicated with the discharge hole through the buffer chamber.

Through above-mentioned technical scheme, through the buffer memory cavity with through-hole and discharge opening UNICOM, at pivot pivoted in-process, all through-holes all the time with buffer memory cavity UNICOM, namely say that the plastics fuse-element in the material chamber can last, stably enter into the buffer memory cavity, later the plastics fuse-element in the buffer memory cavity can enter into the discharge gate under the effect of fuse-element pressure to finally discharge via the discharge gate, improved the efficiency that the plastics fuse-element passes through.

Preferably, the discharging cavity is far away from the inner wall of the filter screen plate and is provided with a guide block, the guide block extends to one side of the discharging hole, and the guide block reduces the diameter of one side of the rotating shaft.

Through above-mentioned technical scheme, the plastic melt can flow along the lateral wall of guide block when contacting the guide block to this flow direction who changes the plastic melt makes the plastic melt can be comparatively convenient and smooth and easy enter into in the relief hole.

Drawings

FIG. 1 is an exploded schematic view of an embodiment;

FIG. 2 is a schematic cross-sectional view of an embodiment;

FIG. 3 is a schematic view of the cabinet;

FIG. 4 is a schematic view of the construction of a diverter plate;

FIG. 5 is a schematic structural view of the spindle;

FIG. 6 is a schematic view of the case cover;

FIG. 7 is a partial schematic view of an embodiment, primarily intended to show a straight doctor blade;

FIG. 8 is a partial schematic view of an embodiment, primarily for illustrating a dogleg-shaped doctor blade;

fig. 9 is a partial schematic view of an embodiment, primarily for illustrating the curved blade.

Reference numerals: 1. a box body; 2. a filter screen plate; 3. a feed cavity; 31. a shunting chamber; 32. a filtering chamber; 4. a discharge cavity; 5. a feed inlet; 6. a trash discharge port; 7. a discharge port; 8. a rotating shaft; 9. a scraper; 10. a protrusion; 11. an elastic force application member; 111. a first spring; 112. a second spring; 12. a flow distribution plate; 121. a material blocking part; 122. a impurity blocking part; 13. a shunt hole; 14. a discharge hole; 15. a through hole; 16. a buffer chamber; 17. a guide block; 18. a cabinet housing; 19. a box cover; 20. a filter screen; 21. and a support plate.

Detailed Description

The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings, so that the technical solution of the present invention can be more easily understood and grasped.

A plastic melt filter without a wire mesh is disclosed, as shown in figure 1, and comprises a box body 1, wherein the box body 1 comprises a box shell 18 with an opening arranged on one side and a box cover 19 covering the opening of the box shell 18, and a cavity is formed between the box shell 18 and the box cover 19.

As shown in fig. 2 and 3, a filter screen plate 2 is arranged in a cavity of a box body 1, and the filter screen plate 2 divides the cavity into a feeding cavity 3 at one side far away from a box cover 19 and a discharging cavity 4 at one side close to the box cover 19. The side wall of the box shell 18 is provided with a feed inlet 5, and the end part of the feed inlet 5 is bent to one side of the filter screen plate 2 and is communicated with the feed cavity 3. The side wall of the box shell 18 is also provided with a trash discharging port 6, and the end part of the trash discharging port 6 penetrates through the box shell 18 and is communicated with the feeding cavity 3. The impurity discharging opening 6 and the feeding opening 5 are respectively arranged on two adjacent side walls in the box shell 18. The side wall of the box shell 18 is also provided with a discharge hole 7, and the discharge hole 7 is communicated with the discharge cavity 4.

As shown in figure 2, the filter screen plate 2 is rotatably connected inside the box body 1, the key at the center of the filter screen plate 2 is connected with the rotating shaft 8, the end part of the rotating shaft 8 far away from the filter screen plate 2 protrudes out of the outer wall of the box shell 18, and the end part of the rotating shaft 8 protruding out of the box shell 18 is connected with a driving part which is used for controlling the rotating shaft 8 and the filter screen plate 2 to rotate during use. The driving piece can select a motor for use, and an output shaft of the motor is coaxially connected with the rotating shaft 8 through a coupler.

As shown in fig. 1 and 2, the filter screen plate 2 includes a filter screen 20 near one side of the feeding cavity 3 and a support plate 21 near one side of the discharging cavity 4, and both the filter screen 20 and the support plate 21 have filter holes, but the aperture of the filter hole on the filter screen 20 is smaller than the aperture of the filter hole on the support plate 21.

As shown in fig. 2 and 4, the inner wall of the feeding cavity 3 away from the filter screen plate 2 is integrally formed with a protrusion 10, the protrusion 10 is cylindrical, and the protrusion 10 is penetrated through the center by the rotating shaft 8. The bulge 10 is sleeved with a flow distribution plate 12, the feed cavity 3 is divided into a flow distribution chamber 31 at one side far away from the filter screen plate 2 and a filter chamber 32 at one side close to the filter screen plate 2 by the flow distribution plate 12, the space of the flow distribution chamber 31 is smaller than that of the filter chamber 32, and the end part area of the flow distribution chamber 31 is smaller than that of the filter chamber 32. The splitter plate 12 is provided with a plurality of splitter holes 13, and the splitter holes 13 are circumferentially distributed by taking the rotating shaft 8 as a center. A material blocking part 121 is formed on the flow distribution plate 12, the material blocking part 121 is opposite to the end part of the feed port 5 communicated with the feed cavity 3, and the material blocking part 121 is used for blocking the plastic melt flowing out of the feed port 5, so that the plastic melt is forced to flow to two sides of the material blocking part 121. The splitter plate 12 is formed with a blocking portion 122, one side of the blocking portion 122 is connected to the edge of the impurity discharging opening 6, and the other side of the blocking portion 122 extends toward the rotating shaft 8 and is finally connected to the side wall of the protrusion 10.

As shown in fig. 1 and 2, a scraper 9 is tightly pressed between the filter screen plate 2 and the flow distribution plate 12, and when the filter screen plate 2 rotates, the scraper 9 tightly pressed on the filter screen plate 2 can scrape off impurities attached to the filter screen plate 2. One end of the scraper 9 is embedded into the side wall of the protrusion 10, the scraper 9 penetrates through the protrusion 10 towards the end surface of the filter screen plate 2, the other end of the scraper 9 extends along the rotation direction of the filter screen plate 2 and is embedded into the inner wall of the feeding cavity 3 close to one side of the impurity discharge port 6, and the scraper 9 penetrates through the inner wall of the feeding cavity 3 towards one side of the filter screen plate 2. One side of the scraper 9, which is far away from the filter screen plate 2, is connected with an elastic force application member 11, and the elastic force application member 11 applies elastic force to the scraper 9 to point to one side of the filter screen plate 2, so that the scraper 9 abuts against the filter screen plate 2. The elastic force application member 11 comprises a first spring 111 and a second spring 112, the first spring 111 is arranged inside the protrusion 10, the end of the first spring 111 is connected to the end of the scraper 9 close to the rotating shaft 8, the second spring 112 is arranged in the inner wall of the feeding cavity 3, and the end of the second spring 112 is connected to the end of the scraper 9 far from the rotating shaft 8.

As shown in fig. 7, 8 and 9, the scraper 9 may be straight, broken or curved.

As shown in fig. 2 and 5, a material discharge hole 14 is formed in the center of the rotating shaft 8, the end portion of the rotating shaft 8 close to the box cover 19 penetrates through the material discharge hole 14 and is communicated with the material discharge cavity 4, and an opening of the material discharge hole 14 close to the box cover 19 is flared. The rotating shaft 8 is provided with a plurality of through holes 15 opposite to the discharge hole 7, and the through holes 15 are circumferentially and uniformly distributed by taking the axis of the rotating shaft 8 as the center. The inside buffer memory cavity 16 that is provided with of box 1, buffer memory cavity 16 have a through-hole 15 one section with pivot 8 and surround, and buffer memory cavity 16 with through-hole 15 and discharge gate 7 intercommunication.

As shown in fig. 2 and 6, the inner wall of the discharging cavity 4 far from the filter screen plate 2 is provided with a guide block 17, the central axis of the guide block 17 is overlapped with the central axis of the rotating shaft 8, the guide block 17 extends to one side of the discharging hole 14, and the guide block 17 reduces the diameter to one side of the rotating shaft 8.

The specific use process of the plastic melt filter without the wire mesh is as follows: injecting the plastic melt to be filtered from the feed opening 5; the plastic melt in the feed inlet 5 is discharged from the end part of the feed inlet 5 communicated with the shunting chamber 31 under the action of melt pressure; the plastic melt discharged from the feed inlet 5 impacts on the material blocking part 121, and then the plastic melt flows to two sides of the material blocking part 121; the plastic melt in the shunting chamber 31 flows out of the shunting holes 13 and enters the filter chamber 32; the plastic melt in the filter chamber 32 passes through the filter screen 20 plate 2 under the action of melt pressure and enters the discharge chamber 4, and impurities in the plastic melt are blocked by the filter screen plate 2 and are attached to the filter screen plate 2; the plastic melt in the discharging cavity 4 flows through the discharging hole 14, the through hole 15 and the buffer cavity 16 and is finally discharged from the discharging hole 7; the impurities attached to the filter screen plate 2 are scraped by the scraper 9 abutting against the filter screen plate 2 during the rotation of the filter screen plate 2, and then the scraped impurities move along the surface of the scraper 9 and finally enter the impurity discharging port 6.

Of course, the above is only a typical example of the present invention, and besides, the present invention can also have other various specific embodiments, and all technical solutions adopting equivalent replacement or equivalent transformation are all within the scope of the present invention as claimed.

Claims

1. The utility model provides a no silk screen plastics fuse-element filter, includes hollow box (1), box (1) inside is provided with filter plate (2), filter plate (2) will the inner chamber of box (1) is separated and is become feeding chamber (3) and play material chamber (4), seted up on box (1) communicate in feed inlet (5) and row's miscellaneous mouthful (6) of feeding chamber (3), seted up on box (1) communicate in discharge gate (7) of play material chamber (4), its characterized in that: the filter screen plate (2) is rotationally connected with the box body (1); a rotating shaft (8) penetrates through the box body (1), and the rotating shaft (8) is connected to the filter screen plate (2) and is used for driving the filter screen plate (2) to rotate circumferentially; the utility model discloses a impurity discharging device, including feeding chamber (3), feed chamber (3) inside is fixed with scraper (9), scraper (9) are contradicted filter screen plate (2) and be used for with impurity on filter screen plate (2) is scraped down, just scraper (9) can block the impurity process of scraping down scraper (9) to the impurity guide of scraping down is to arrange miscellaneous mouthful (6) department.

2. The plastic melt filter without screens of claim 1, wherein: a bulge (10) is arranged on the inner wall of the feeding cavity (3) far away from the filter screen plate (2), and the rotating shaft (8) penetrates through the middle part of the bulge (10); one end of the scraper (9) is connected with the protrusion (10), and the other end of the scraper (9) is connected with the inner side wall of the feeding cavity (3).

3. The plastic melt filter without wire mesh of claim 2, wherein: the scraper (9) is provided with an elastic force application part (11), and the elastic force application part (11) applies elastic force to the scraper (9) to point to one side of the filter screen plate (2), so that the scraper (9) is tightly propped against the filter screen plate (2).

4. The plastic melt filter without wire mesh of claim 3, wherein: the elastic force application part (11) comprises a first spring (111) and a second spring (112), the first spring (111) is arranged inside the bulge (10) and connected with the scraper (9), and the second spring (112) is arranged in the inner wall of the feeding cavity (3) and connected with the scraper (9).

5. The plastic melt filter without screens of claim 1, wherein: feeding chamber (3) inside flow distribution plate (12) that is provided with, flow distribution plate (12) quilt pivot (8) run through, a plurality of diffluent holes (13) have been seted up on flow distribution plate (12), flow distribution plate (12) with feed inlet (5) department of being relative is formed with and keeps off material portion (121), keep off material portion (121) and be used for hindering the plastic melt that feed inlet (5) flowed to order about the plastic melt to keep off material portion (121) both sides flow.

6. The plastic melt filter without screens of claim 5, wherein: the scraper (9) supports tightly in flow distribution plate (12) with filter screen board (2) between, be formed with on flow distribution plate (12) and keep off miscellaneous portion (122), keep off miscellaneous portion (122) one side contradict in scraper (9), keep off miscellaneous portion (122) another side direction the extension of trash outlet (6) one side.

7. The plastic melt filter without screens of claim 5, wherein: the material inlet cavity (3) is divided into a diversion chamber (31) at one side far away from the filter screen plate (2) and a filter chamber (32) at one side close to the filter screen plate (2) by the diversion plate (12), and the end part area of the diversion chamber (31) is smaller than that of the filter chamber (32).

8. The plastic melt filter without screens of claim 1, wherein: the material discharging device is characterized in that a material discharging hole (14) is formed in the rotating shaft (8), the material discharging hole (14) is communicated with the material discharging cavity (4), a plurality of through holes (15) are circumferentially distributed in the side wall of the rotating shaft (8), and the through holes (15) are used for communicating the material discharging hole (14) with the material discharging hole (7).

9. The plastic melt filter without screens of claim 8, wherein: a buffer chamber (16) is arranged in the box body (1), the rotating shaft (8) penetrates through the buffer chamber (16), and the through hole (15) is communicated with the discharge hole (7) through the buffer chamber (16).

10. The plastic melt filter without screens of claim 8, wherein: the discharging cavity (4) is far away from the inner wall of the filter screen plate (2) and is provided with a guide block (17), the guide block (17) extends to one side of the discharge hole (14), and the guide block (17) reduces the diameter of one side of the rotating shaft (8).