Filter of granulator

Abstract

The utility model relates to a granulator filter which comprises a knife rest, a feeding box, a cavity box, filter screens, a cylinder and a scraper, the left side and the right side of the feeding box are respectively fixed with the cavity box, the filter screens are arranged between an inner cavity of the feeding box and a first cavity of the cavity box, the knife rest is arranged between the two filter screens, and the cylinder is arranged between the two filter screens. The left side and the right side of the knife rest are connected with the scrapers correspondingly, the scrapers make contact with the filter screen, and the air cylinder drives the knife rest to move in the vertical direction. The filter screens are arranged on the left side and the right side, so that the filtering efficiency is improved; the screw is arranged to discharge impurities out of the filter in time, so that the filtering efficiency of the filter screen is improved, and the overhauling and cleaning times of the filter are reduced; and the feeding box and the cavity box are rotationally connected through the hinge, so that the overhauling and cleaning efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of filters, in particular to a granulator filter. Background Art

[0002] In the context of the waste plastic machinery industry, in the existing process of using filters to granulate, waste plastics are squeezed into the filter to filter impurities. A filter screen is set in the filter, and the scraper moves up and down to scrape off the impurities attached to the filter screen.

[0003] After the existing scraper scrapes the impurities from the filter, the impurities cannot be discharged in time, resulting in some of them being attached to the filter, reducing the filtering efficiency of the filter. At the same time, the impurities in the filter need to be frequently disassembled and cleaned.

[0004] The current scraper is a whole blade. When the whole blade partially contacts the impurities that are difficult to scrape off, it will be blocked by the impurities, causing the blade to bend and deform locally, which in turn causes damage to the blade, shortening the life of the scraper. If the blade is partially damaged, the entire blade needs to be replaced, increasing the cost of use. In addition, the scraper is fixed to the blade holder, resulting in a gap between the scraper and the filter after wear, making it impossible for the scraper to scrape off the impurities on the filter. Utility Model Content

[0005] The utility model aims to solve the above problems and provides a granulator filter and a tray to solve the above problems.

[0006] A granulator filter comprises: a knife holder, a feed box, a cavity box, a filter screen, a cylinder and a scraper, wherein the left and right sides of the feed box are respectively fixed to the cavity box, the filter screen is located between the inner cavity of the feed box and the first cavity of the cavity box, the knife holder is located between the two filter screens, the left and right sides of the knife holder are respectively connected to the scraper, the scraper is in contact with the filter screen, and the cylinder drives the knife holder to move up and down.

[0007] Preferably, the filter screen is fixedly connected to the feed box, and the inner cavity of the feed box and the first cavity of the cavity box are connected through the filter screen.

[0008] Preferably, the rear end of the inner cavity of the feed box is connected to the feed pipe, a first connecting cavity is formed at the front end of the feed box, and a second connecting cavity is formed in the cavity box. The first connecting cavity is respectively connected to the second connecting cavity and the discharge port, and the second connecting cavity is connected to the first cavity.

[0009] Preferably, it also includes a guide column, which is fixedly connected to the feed box, and the tool holder is slidably connected to the guide column.

[0010] Preferably, it also includes a mounting frame, the outer side of the feed box is fixedly connected to the mounting frame, the cylinder body of the cylinder is fixedly connected to the mounting frame, and the piston rod of the cylinder penetrates into the inner cavity of the feed box and is fixedly connected to the tool holder.

[0011] Preferably, it also includes a slag discharge pipe, a screw and a motor. Grooves are formed on the upper and lower sides of the inner cavity of the feed box, respectively. The screw is located in the grooves. The upper and lower sides of the feed box are respectively fixedly connected to the slag discharge pipe. The screw penetrates into the slag discharge pipe and is rotatably connected to the slag discharge pipe. The motor is fixedly connected to the feed box and drives the screw to rotate.

[0012] Preferably, two grooves are formed on the upper and lower sides of the feed box respectively, and the screws in the grooves on the same side rotate in opposite directions.

[0013] Preferably, the slag discharge pipe is located at the front side of the feed box.

[0014] Preferably, it also includes a hinge, and two sides of the hinge are fixedly connected to the feed box and the cavity box respectively.

[0015] Preferably, it also includes a rotating shaft, the scraper includes multiple blades, the upper and lower sides of the left and right sides of the blade holder are rotatably connected to the rotating shaft respectively, the rotating shaft is fixed to the multiple blades, and the blades on the upper and lower sides are mirror-symmetrical.

[0016] The utility model has the following advantages:

[0017] 1. Filters are set on both sides to improve the filtering efficiency;

[0018] 2. The screw is set to discharge impurities from the filter in time, which improves the filtering efficiency of the filter and reduces the number of inspections and cleaning of the filter;

[0019] 3. The feed box and the cavity box are connected by hinge rotation, which improves the efficiency of maintenance and cleaning;

[0020] 4. The scraper is not a whole but consists of multiple blades arranged in a straight line. When a single blade encounters impurities, it can rotate individually to avoid bending and deformation of the blade, thereby increasing the service life of the blade. When a row of multiple blades is damaged, only the damaged blade needs to be replaced instead of all the blades, thus reducing the cost of using the blades. The rotating shaft rotates relative to the blade holder, so that the blade can rotate to fit the filter screen to ensure the scraping effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only one embodiment of the utility model. For ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0022] Figure 1 : Schematic diagram of the three-dimensional structure of the knife holder and the scraper (part of the blade and the rotating shaft are not shown);

[0023] Figure 2 : Schematic diagram of the top view of the blade holder and the scraper (part of the blade and the rotating shaft are not shown);

[0024] Figure 3 : Figure 2 A schematic cross-sectional view of the structure at AA in the middle (part of the blade and the rotating shaft are not shown);

[0025] Figure 4 : Schematic diagram of the three-dimensional structure of the knife holder and the scraper (part of the blade and the rotating shaft are not shown);

[0026] Figure 5 : A schematic diagram of the three-dimensional structure of the utility model;

[0027] Figure 6 : Schematic diagram of the three-dimensional structure of the utility model after removing the feed box;

[0028] Figure 7 : A schematic diagram of the main structure of the utility model;

[0029] Figure 8 : Figure 7 Schematic diagram of the cross-sectional structure at the middle BB;

[0030] Fig. 9 : Figure 7 Schematic diagram of the cross-sectional structure at CC in the middle. DETAILED DESCRIPTION

[0031] The utility model is further described below with reference to the accompanying drawings and examples:

[0032] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] like Figures 1 to 9 As shown, this embodiment provides a granulator filter, including: a knife holder 1, a feed box 4, a cavity box 5, a filter screen 6, a cylinder 7 and a scraper, the left and right sides of the feed box 4 are respectively fixed to the cavity box 5, the filter screen 6 is located between the inner cavity of the feed box 4 and the first cavity 52 of the cavity box 5, the knife holder 1 is located between the two filter screens 6, the left and right sides of the knife holder 1 are respectively connected to the scraper, the scraper is in contact with the filter screen 6, and the cylinder 7 drives the knife holder 1 to move up and down. Preferably, the filter screen 6 is fixed to the feed box 4 and is detachably connected.

[0036] Preferably, the filter screen 6 is fixedly connected to the feed box 4 , and the inner cavity of the feed box 4 and the first cavity 52 of the cavity box 5 are connected through the filter screen 6 .

[0037] Preferably, the rear end of the inner cavity of the feed box 4 is connected to the feed pipe 44, the front end of the feed box 4 is formed with a first connecting cavity 41, the cavity box 5 is formed with a second connecting cavity 51, the first connecting cavity 41 is respectively connected to the second connecting cavity 51 and the discharge port 46, and the second connecting cavity 51 is connected to the first cavity 52.

[0038] Preferably, it further comprises a guide post 42 , wherein the guide post 42 is fixedly connected to the feed box 4 , and the tool holder 1 is slidably connected to the guide post 42 .

[0039] Preferably, it also includes a mounting bracket 72, the outer side of the feed box 4 is fixedly connected to the mounting bracket 72, the cylinder body of the cylinder 7 is fixedly connected to the mounting bracket 72, and the piston rod 71 of the cylinder 7 penetrates into the inner cavity of the feed box 4 and is fixedly connected to the tool holder 1.

[0040] Preferably, it further comprises a slag discharge pipe 45, a screw 8 and a motor 81, the upper and lower sides of the inner cavity of the feed box 4 are respectively formed with grooves, the screw 8 is located in the grooves, the upper and lower sides of the feed box 4 are respectively fixedly connected with the slag discharge pipe 45, the screw 8 penetrates the slag discharge pipe 45 and is rotatably connected with the slag discharge pipe 45, and the motor 81 is fixedly connected with the feed box 4 and drives the screw 8 to rotate. The outer diameter of the screw 8 is equal to the inner diameter of the slag discharge pipe 45.

[0041] Preferably, two grooves are formed on the upper and lower sides of the feed box 4, and the screws 8 in the grooves on the same side rotate in opposite directions. The two screws 8 with opposite rotation directions can be driven by different motors respectively; or the two screws 8 can be fixedly connected to gears respectively. Two gears are meshed, and only one screw 8 is connected to the motor 81.

[0042] Preferably, the slag discharge pipe 45 is located at the front side of the feed box 4 .

[0043] Preferably, a hinge 43 is further included, and the two sides of the hinge 43 are respectively fixedly connected to the feed box 4 and the cavity box 5. During maintenance, the connection pieces used to fix the feed box 4 and the cavity box 5 are removed, and the cavity box 5 is rotated to open, so that the filter screen 6 can be replaced or the inside and components of the feed box 4 and the cavity box 5 can be cleaned. There is no need to disassemble the feed box 4 and the cavity box 5 as a whole, which improves the maintenance and cleaning efficiency.

[0044] Preferably, it also includes a rotating shaft 2, the scraper includes multiple blades 3, the upper and lower sides of the left and right sides of the tool holder 1 are rotatably connected to the rotating shaft 2 respectively, the rotating shaft 2 is fixed to the multiple blades 3, and the blades 3 on the upper and lower sides are mirror-symmetrical.

[0045] Preferably, a limit plate 15 is further included, and the front and rear ends of the rotating shaft 2 are respectively fitted with the limit plates 15, and the limit plates 15 are fixedly and detachably connected to the tool holder 1. During installation, one limit plate 15 is removed, and then the rotating shaft 2 is axially inserted into the cylindrical groove 10, and finally a screw is used to pass through the limit plate 15 and threadedly connected to the tool holder 1, and the limit plate 15 is fitted with the end surface of the rotating shaft 2 to limit the rotating shaft 2.

[0046] Preferably, the rotating shaft 2 is radially formed with a plurality of inserting portions 21 , the blades 3 are inserted into the inserting portions 21 , the inserting portions 21 are evenly arranged in a straight line along the axis of the rotating shaft 2 , and adjacent blades 3 are in contact with each other.

[0047] Preferably, the insertion portion 21 is a through hole or a slot.

[0048] Preferably, it also includes a bolt, the shaft 2 is radially formed with a second fixing hole 22, the second fixing hole 22 is connected to the insertion portion 21, the blade 3 is formed with a third fixing hole 31 in the thickness direction, and the bolt passes through the third fixing hole 31 and is threadedly connected with the second fixing hole 22.

[0049] Preferably, the blade 3 is formed with a first cutting edge surface 32 and a second cutting edge surface 33 , the width of the second cutting edge surface 33 is smaller than the width of the first cutting edge surface 32 , and the second cutting edge surface 33 intersects with the first cutting edge surface 32 .

[0050] Preferably, a first fixing hole 11 is formed in the middle of the tool holder 1 in the up-down direction, and a sliding hole 12 is formed in the up-down direction. When in use, the first fixing hole 11 is fixed to the piston rod of the cylinder, and the guide column passes through the sliding hole 12.

[0051] Preferably, the tool holder 1 is formed with a first through hole 13 in the up-and-down direction, and the tool holder 1 is formed with a through groove 14 that passes through from top to bottom on the front and rear sides. The first through hole 13 and the through groove 14 reduce the material used in the tool holder 1 and allow the liquid in the filter to pass through, thereby reducing the resistance during up-and-down movement.

[0052] Preferably, the upper and lower sides of the left and right side surfaces of the knife holder 1 are rotatably connected to the rotating shaft 2 respectively, so that impurities attached to the filter screens on the left and right sides can be scraped off simultaneously.

[0053] The waste plastics enter the inner cavity of the feed box 4 from the feed pipe 44 , and then move to both sides through the filter screen 6 . Impurities in the waste plastics are blocked by the filter screen 6 and remain in the inner cavity of the feed box 4 .

[0054] The blades 3 on both sides are in contact with the filter screen 6, and the cylinder 7 drives the knife holder 1 to move up and down. When the knife holder 1 moves upward, the scraped impurities leave the filter screen 6 from the second blade surface 33 of the upper blade 3; when the knife holder moves downward, the scraped impurities leave the filter screen 6 from the second blade surface 33 of the lower blade 3. The motor 81 drives the screw 8 to rotate, and the screw 8 drives the impurities to move until the impurities are discharged from the slag discharge pipe 45.

[0055] The filtered waste plastic enters the first cavity 52 , then passes through the second connecting cavity 51 and the first connecting cavity 41 , and is finally discharged from the discharge port 46 .

[0056] The rotation of the shaft 2 relative to the blade holder 1 can keep the blade 3 in contact with the filter. It should be noted that the rotation range of the blade 3 below and below is limited by the cylindrical groove 10, so that the blade 3 will not be rotated by gravity and lose contact with the filter.

[0057] The present invention is described above by way of examples, but the present invention is not limited to the above specific embodiments, and any changes or modifications based on the present invention belong to the scope of protection required by the present invention.

Claims

1. A granulator filter, characterized in that: include: A tool holder (1), a feed box (4), a cavity box (5), a filter screen (6), a cylinder (7) and a scraper, wherein the feed box (4) is fixed to the cavity box (5) on both sides, the filter screen (6) is located between the inner cavity of the feed box (4) and the first cavity (52) of the cavity box (5), the tool holder (1) is located between the two filter screens (6), the tool holder (1) is connected to the scraper on both sides, the scraper is in contact with the filter screen (6), and the cylinder (7) drives the tool holder (1) to move in the up and down directions.

2. A granulator filter according to claim 1, characterized in that: The filter screen (6) is fixedly connected to the feed box (4), and the inner cavity of the feed box (4) and the first cavity (52) of the cavity box (5) are connected via the filter screen (6).

3. A granulator filter according to claim 1, characterized in that: The rear end of the inner cavity of the feed box (4) is connected to the feed pipe (44), the front end of the feed box (4) is formed with a first connecting cavity (41), the cavity box (5) is formed with a second connecting cavity (51), the first connecting cavity (41) is respectively connected to the second connecting cavity (51) and the discharge port (46), and the second connecting cavity (51) is connected to the first cavity (52).

4. A granulator filter according to claim 1, characterized in that: It also includes a guide column (42), wherein the guide column (42) is fixedly connected to the feed box (4), and the tool holder (1) is slidably connected to the guide column (42).

5. A granulator filter according to claim 1, characterized in that: It also includes a mounting frame (72), the outer side of the feed box (4) is fixedly connected to the mounting frame (72), the cylinder body of the cylinder (7) is fixedly connected to the mounting frame (72), and the piston rod (71) of the cylinder (7) penetrates into the inner cavity of the feed box (4) and is fixedly connected to the tool holder (1).

6. A granulator filter according to claim 1, characterized in that: It also includes a slag discharge pipe (45), a screw (8) and a motor (81). The upper and lower sides of the inner cavity of the feed box (4) are respectively formed with grooves, the screw (8) is located in the grooves, the upper and lower sides of the feed box (4) are respectively fixedly connected to the slag discharge pipe (45), the screw (8) penetrates into the slag discharge pipe (45) and is rotatably connected to the slag discharge pipe (45), and the motor (81) is fixedly connected to the feed box (4) and drives the screw (8) to rotate.

7. A granulator filter according to claim 6, characterized in that: The feed box (4) is formed with two grooves on the upper and lower sides respectively, and the screws (8) in the grooves on the same side rotate in opposite directions.

8. A granulator filter according to claim 6, characterized in that: The slag discharge pipe (45) is located at the front side of the feed box (4).

9. A granulator filter according to claim 1, characterized in that: It also comprises a hinge (43), the two sides of which are respectively fixedly connected to the feed box (4) and the cavity box (5).

10. A granulator filter according to claim 1, characterized in that: It also comprises a rotating shaft (2), the scraper comprises a plurality of blades (3), the upper and lower sides of the left and right side surfaces of the blade holder (1) are respectively rotatably connected to the rotating shaft (2), the rotating shaft (2) is fixed to the plurality of blades (3), and the blades (3) on the upper and lower sides are mirror-symmetrical.

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