Four-runner self-cleaning filter

Abstract

The utility model belongs to the technical field of screen exchangers, and relates to a four-runner self-cleaning filter, which comprises a filter box body, a feed port and a discharge port are respectively arranged on two sides of the filter box body, a filter cavity is arranged in the filter box body, two filter units are axially arranged in the filter cavity, and the filter units are arranged in the filter box body. Each filter unit comprises a filter cartridge, a filter screen, a perforated plate and a partition plate which are sequentially arranged from inside to outside, a scraper for cleaning the filter screen is rotationally arranged in the filter cartridge, a filter inlet communicated with the feed port is formed in the filter cartridge, and a filter outlet communicated with the discharge port is formed between the perforated plate and the partition plate. The four-runner self-cleaning filter provided by the utility model can meet the use requirements on a large-yield plastic extrusion product line.

Description

Technical Field

[0001] The utility model belongs to the technical field of filters and relates to a four-channel self-cleaning filter. Background Art

[0002] In the polymer granulation process, in order to ensure the smooth and standardized pelletizing of the material, the molten polymer needs to be strictly filtered before passing through the template hole. Depending on the brand of the material, the required filtering screen is also different. Now the material is generally filtered through a filter.

[0003] Chinese utility model patent CN208993043U (publication date: 2019.06.18) discloses a double-plate type wire-free filter, including a housing, a rotating shaft is rotatably provided in the housing along the axis, one end of the rotating shaft extends out of the housing and is connected to a power source, a housing is formed in the housing, a scraper is provided in the housing, and a first filter disc and a second filter disc are provided on both sides of the scraper, respectively, the first filter disc and the second filter disc divide the housing into a feed cavity and a discharge cavity, the feed cavity and the discharge cavity are respectively connected with a feed port and a discharge hole, and a slag discharge port is provided on one side of the feed cavity; a cover plate is provided on the housing on one side of the second filter disc, and a threaded portion connected to the housing and a gear portion driving the housing to rotate are formed on the outer periphery of the cover plate in sequence, the outer thread is screwed with the housing, a hollow cover plate fixing seat is provided on the right side of the cover plate, and a gear shaft is provided at one end of the cover plate fixing seat, and the gear shaft and the first gear are meshed with each other. The output of the existing plastic extrusion product line is getting larger and larger, and the volume of the housing cavity of the above-mentioned filter is limited, which cannot meet its needs. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a four-channel self-cleaning filter which can meet the use requirements of a large-volume plastic extrusion product line.

[0005] In order to solve the above technical problems, the purpose of the utility model is achieved through the following technical solutions:

[0006] A four-channel self-cleaning filter comprises a filter box, a feed port and a discharge port are respectively arranged on both sides of the filter box, a filter chamber is arranged in the filter box, two filter units are axially arranged in the filter chamber, each filter unit comprises a filter cartridge, a filter screen, a porous plate and a partition plate which are arranged in sequence from the inside to the outside, a scraper for cleaning the filter screen is rotatably arranged in the filter cartridge, a filter inlet connected to the feed port is arranged on the filter cartridge, and a filter outlet connected to the discharge port is arranged between the porous plate and the partition plate.

[0007] In the above-mentioned four-channel self-cleaning filter, the filter units each include a filter cartridge, a pair of filter screens, a pair of porous plates and a pair of partitions, and are correspondingly provided with a filter inlet and two filter outlets.

[0008] In the above-mentioned four-channel self-cleaning filter, the filter cavity is a cylindrical cavity, and the filter cartridge, filter screen, porous plate and partition are all adapted to the filter cavity.

[0009] In the above-mentioned four-channel self-cleaning filter, the partitions of the end filter units can also be directly formed on the filter box; adjacent filter units can also share the partitions.

[0010] In the above-mentioned four-channel self-cleaning filter, the filter inlets of the filter units are respectively collected through feed channels and connected to the feed ports, and the filter outlets of the filter units are respectively collected through discharge channels and connected to the discharge ports; preferably, guide slopes are provided on the feed channels and the discharge channels, and the guide slopes guide the material to the middle area.

[0011] In the above-mentioned four-channel self-cleaning filter, the feed channel and the discharge channel are respectively formed in the filter housing.

[0012] In the above-mentioned four-channel self-cleaning filter, a feed plate and a discharge plate are respectively arranged on both sides of the filter housing, the feed port is arranged on the feed plate, and the discharge port is arranged on the discharge plate.

[0013] In the above-mentioned four-channel self-cleaning filter, an annular filter channel with an opening is arranged between the porous plate and the partition plate, and the filter outlet is arranged at the opening of the annular filter channel.

[0014] In the above-mentioned four-channel self-cleaning filter, the scraper is driven to rotate by a motor on one side of the filter housing, and the scraper contacts the inner side of the filter screen when rotating. Furthermore, the scrapers are all mounted on the same scraper shaft, and the scraper shaft is connected to the motor shaft through a coupling. Preferably, the filter screens in the same filter unit can share the same scraper, and the two sides of the scraper correspond to a filter screen respectively.

[0015] In the above-mentioned four-channel self-cleaning filter, the bottom of the filter cartridge of the filter unit is provided with a debris discharge port, and the bottom of the debris discharge port is connected to a debris discharge device; further, the bottom of the filter box is provided with a debris discharge groove corresponding to the debris discharge port, and the debris discharge device is connected to the debris discharge groove. The debris discharge device adopts a conventional device in the art, for example, a screw driven by a motor or a piston rod driven by a cylinder to transport the debris out of the device.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The utility model provides a four-channel self-cleaning filter, which expands the capacity that the filter can adapt to by adopting two filter units, so that the filter can meet the use requirements of large-volume plastic extrusion product lines. At the same time, the utility model optimizes the layout of the filter unit and further optimizes the design of the inlet and outlet channels. Even if two filter units and four filter channels are set, the smoothness and filtering effect of the filtering will not be affected, and the filtering structure is also made more concise. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the utility model;

[0019] Figure 2 It is a three-dimensional diagram of the filter unit of the utility model;

[0020] Figure 3 yes Figure 2 Exploded diagram of

[0021] Figure 4 It is a three-dimensional diagram of the filter box of the utility model;

[0022] Figure 5 It is a stereogram of the filtering structure of the utility model;

[0023] Figure 6 yes Figure 5 A cross-sectional view along the horizontal axis;

[0024] Figure numerals: 1. filter box; 2. feed port; 3. discharge port; 4. filter cartridge; 5. filter screen; 6. porous plate; 7. partition; 8. scraper; 9. filter inlet; 10. filter outlet; 11. feed channel; 12. discharge channel; 13. annular filter channel; 14. motor; 15. impurity discharge port; 16. impurity discharge device. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings. Figure 1-6 :

[0026] A four-channel self-cleaning filter comprises a filter housing 1, wherein a feed port 2 and a discharge port 3 are respectively arranged on both sides of the filter housing 1, a filter cavity is arranged in the filter housing 1, and two filter units are axially arranged in the filter cavity, each filter unit comprises a filter cartridge 4, a filter screen 5, a porous plate 6 and a partition plate 7 which are arranged in sequence from the inside to the outside, a scraper 8 for cleaning the filter screen 5 is rotatably arranged in the filter cartridge 4, a filter inlet 9 connected with the feed port 2 is arranged on the filter cartridge 4, and a filter outlet 10 connected with the discharge port 3 is arranged between the porous plate 6 and the partition plate 7.

[0027] In this example, the Figure 2 The filter inlets 9 of the filter units are respectively collected through the feed channel 11 and connected to the feed port 2, and the filter outlets 10 of the filter units are respectively collected through the discharge channel 12 and connected to the discharge port 3; preferably, the feed channel 11 and the discharge channel 12 are provided with guide slopes, and the guide slopes guide the material to the middle area.

[0028] In addition, the filter units each include a filter cartridge 4 , a pair of filter screens 5 , a pair of porous plates 6 and a pair of partitions 7 , and are provided with a filter inlet 9 and two filter outlets 10 correspondingly.

[0029] In this example, the Figure 5 The material enters from the feed port 2, and after being diverted by the feed flow channel 11, it enters the filter inlet 9 of the front filter unit and the filter inlet 9 of the rear filter unit respectively. Then, the front filter unit and the rear filter unit filter the entered material respectively. The material entering the cavity of the filter cylinder 4 is squeezed, passes through the filter mesh 5 and the porous plate 6 on both sides in turn, and then enters the two corresponding filter outlets 10. The materials of the four filter outlets 10 are then collected through their respective discharge flow channels 12 and enter the discharge port 3 for discharge.

[0030] In order to reduce material residue, the filter cavity is a cylindrical cavity, and the filter cartridge 4, filter screen 5, porous plate 6 and partition plate 7 are all adapted to the filter cavity.

[0031] In order to make the filtering structure more concise, the partition plate 7 of the end filtering unit can also be directly formed on the filter box 1; adjacent filtering units can also share the partition plate 7.

[0032] Compare with Figure 3 In this embodiment, the feed channel 11 and the discharge channel 12 are respectively formed in the filter housing 1 .

[0033] In order to facilitate the setting of the feed port 2 and the discharge port 3 and to facilitate the connection of the extrusion device, a feed plate and a discharge plate are respectively provided on both sides of the filter box 1, the feed port 2 is provided on the feed plate, and the discharge port 3 is provided on the discharge plate.

[0034] In order to facilitate the outflow of filtered materials, an annular filter flow channel 13 with an opening is provided between the porous plate 6 and the partition plate 7 , and the filter outlet 10 is provided at the opening of the annular filter flow channel 13 .

[0035] A scraper 8 is correspondingly arranged on the inner side of the filter 5, and the scraper 8 is driven to rotate by a motor 14 on one side of the filter housing 1. Further, the scrapers 8 are all mounted on the same scraper shaft, and the scraper shaft is connected to the motor shaft through a coupling. Preferably, the filter screens 5 in the same filter unit can share the same scraper 8, and the two sides of the scraper 8 correspond to a filter screen 5 respectively.

[0036] The bottom of the filter cartridge 4 of the filter unit is provided with a discharge port 15, and the bottom of the discharge port 15 is connected to a discharge device 16; further, the bottom of the filter housing 1 is provided with a discharge groove corresponding to the discharge port 15, and the discharge device 16 is connected to the discharge groove. The discharge device 16 adopts a conventional device in the art, for example, a screw driven by a motor 14 or a piston rod driven by a cylinder to transport the debris out of the device.

[0037] Compare with Figure 1 By setting a scraper 8 driven by a motor 14 and a debris removal device 16, the debris attached to the filter screen 5 can be scraped off and discharged outside the device, and the filter can be self-cleaned, thereby greatly extending the filter screen replacement cycle 5 and avoiding shutdown for screen replacement.

[0038] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A four-channel self-cleaning filter, comprising a filter housing (1), wherein a feed inlet (2) and a discharge outlet (3) are respectively arranged on both sides of the filter housing (1), and a filter cavity is arranged inside the filter housing (1), characterized in that: Two filter units are arranged in the axial direction in the filter cavity, and each filter unit comprises a filter cartridge (4), a filter screen (5), a porous plate (6) and a partition plate (7) which are arranged in sequence from the inside to the outside. A scraper (8) for cleaning the filter screen (5) is rotatably arranged in the filter cartridge (4), a filter inlet (9) which is connected to the feed port (2) is arranged on the filter cartridge (4), and a filter outlet (10) which is connected to the discharge port (3) is arranged between the porous plate (6) and the partition plate (7).

2. A four-channel self-cleaning filter according to claim 1, characterized in that: The filtering units each comprise a filtering cartridge (4), a pair of filtering screens (5), a pair of porous plates (6) and a pair of partitions (7), and are provided with a filtering inlet (9) and two filtering outlets (10) correspondingly.

3. A four-channel self-cleaning filter according to claim 2, characterized in that: The filter inlets (9) of the filter units are respectively collected through the feed channels (11) and communicated with the feed port (2), and the filter outlets (10) of the filter units are respectively collected through the discharge channels (12) and communicated with the discharge port (3).

4. A four-channel self-cleaning filter according to claim 3, characterized in that: The feed flow channel (11) and the discharge flow channel (12) are respectively formed in the filter housing (1).

5. A four-channel self-cleaning filter according to claim 1, characterized in that: An annular filtering flow channel (13) with an opening is provided between the porous plate (6) and the partition plate (7), and the filtering outlet (10) is provided at the opening of the annular filtering flow channel (13).

6. A four-channel self-cleaning filter according to claim 1, characterized in that: The scraper (8) is driven to rotate by a motor (14) on one side of the filter housing (1), and the scraper (8) contacts the inner side of the filter screen (5) when rotating.

7. A four-channel self-cleaning filter according to claim 1, characterized in that: The bottom of the filter cartridge (4) of the filter unit is provided with a debris discharge port (15), and the bottom of the debris discharge port (15) is connected to a debris discharge device (16).

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