Plate type filtering device for sewage treatment

Abstract

The utility model discloses a plate type filtering device for sewage treatment, which comprises a machine body erected on the ground, a filtering mechanism for double filtering of sewage, a positioning mechanism for mounting and positioning the filtering mechanism, and an impurity collecting mechanism for collecting impurities, the filter mechanism is arranged inside the machine body, the positioning mechanism is arranged on the inner side of the machine body corresponding to the filter mechanism, and the impurity collecting mechanism is arranged at the bottom of the machine body. The sewage treatment device can comprehensively filter and purify sewage from multiple angles, ensures that the discharged water quality reaches the standard, is small in distance between filter plates, is high in filtering efficiency, is provided with a positioning mechanism, can stably mount and position filters of different specifications, can realize quick mounting of the filters, is provided with an impurity collecting mechanism, can collect impurities, and is convenient to use. The cleaning is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of plate-type filter devices, in particular to a plate-type filter device for sewage treatment. Background Art

[0002] In the prior art, the plate filter device is a filter device that uses multiple plate-shaped filter plates inside the filter cartridge to filter the filtrate entering it and output clear liquid. It is one of the most commonly used filters at this stage. It has a large filtration area, a large flow rate, and a wide range of applications. Therefore, it is widely used in the pharmaceutical, chemical, food and other industries. When in use, the plate filter device adopts the principle of creating an internal pressure difference, so that the filtrate passes through the filter plate and flows out of the filter cartridge. The residue remaining on the aluminum plate is often shaken off with a vibrator after drying. In this way, the vibrator drives the filter plate to shake, and the amplitude is large, which can easily damage the connection between the filter plate and the liquid outlet, resulting in internal components. The components are damaged and maintenance is difficult. At the same time, the vibration of the vibrator is not efficient in shaking off the residue, and the effect is poor, which often causes a large amount of residue. In order to ensure the cleanliness of the inside of the plate filter device, a filter screen is usually set at the entrance of the plate filter device. However, after long-term use, impurities near the filter screen will accumulate too much, and the staff does not clean the filter screen in time, which affects the flow of the medium between the pipeline and the pipeline through-hole, affecting the normal use of the plate filter device, thereby reducing the working efficiency of the plate filter device. The clogged filter screen is not easy to remove from the plate filter device, which makes it difficult for the staff to clean the clogged filter screen.

[0003] The filtration system of claim 1, wherein the filter comprises a first filter element and a second filter element and a second filter element. The filter element comprises a filter element having a first filter element and a second filter element. The filter element comprises a filter element having a first filter element and a second filter element. The filter element comprises a filter element having a first filter element and a second filter element. However, although this plate filter device is convenient for cleaning the filter screen, the spacing between the filter cloths is large, the filtration efficiency is low, and the filter cloth structure is arranged vertically, which causes impurities to easily accumulate at the bottom of the filter device during filtration. Under the action of water flow, impurities escape to the multiple layers of filter cloth, affecting the filtration effect. Utility Model Content

[0004] The purpose of the utility model is to provide a plate-type filtering device for sewage treatment.

[0005] In order to achieve the above purpose, the technical solution proposed by the utility model is:

[0006] A plate-type filter device for sewage treatment includes a body, which is erected on the ground, and also includes a filtering mechanism for double filtering of sewage, a positioning mechanism for installing and positioning the filtering mechanism, and a collecting mechanism for collecting impurities. The filtering mechanism is arranged inside the body, the positioning mechanism is configured on the inner side of the body corresponding to the filtering mechanism, and the collecting mechanism is arranged at the bottom of the body.

[0007] The filtering mechanism includes a water inlet, a water outlet, a primary filtering assembly and a secondary filtering assembly. The water inlet is arranged on one side of the body and passes through the body. The water outlet is arranged on the side of the body away from the water inlet and passes through the body. The water outlet is arranged corresponding to the water inlet. The primary filtering assembly is arranged on a side of the body close to the water inlet, and the secondary filtering assembly is arranged on a side of the body close to the water outlet.

[0008] The preliminary filtration assembly includes a preliminary filter plate and a preliminary opening and closing door. The preliminary filter plates are provided in several groups. Several groups of the preliminary filter plates are arranged obliquely inside the body through a positioning mechanism and several groups of the preliminary filter plates are arranged parallel to each other. There are two groups of the preliminary opening and closing doors. The two groups of the preliminary opening and closing doors are symmetrically arranged on both sides of the body corresponding to the preliminary filter plates and are hinged to the body.

[0009] The secondary filtration assembly includes a secondary filter and a secondary opening and closing door. There are two groups of secondary filters. The two groups of secondary filters are arranged side by side inside the body and are fixedly connected to the body through a positioning mechanism. The two groups of secondary filters are arranged vertically. There are two groups of secondary opening and closing doors. The two groups of secondary opening and closing doors are symmetrically arranged on both sides of the body corresponding to the secondary filters and are hinged to the body.

[0010] The positioning mechanism includes a liquid inlet baffle, a primary positioning assembly and a secondary positioning assembly. The liquid inlet baffle is arranged at the lower inner part of the body and is fixedly connected to the body. The liquid inlet baffle is arranged on the side of the body close to the primary filter plate. The primary positioning assembly is arranged on the side of the body corresponding to the primary filter plate, and the secondary positioning assembly is arranged at the upper and lower ends of the interior of the body corresponding to the secondary filter.

[0011] The preliminary positioning assembly includes a positioning side plate and a positioning folding snap ring. The positioning side plates are provided with two groups. The two groups of positioning side plates are symmetrically arranged on both sides of the interior of the machine body and fixedly connected to the machine body. The positioning side plates are provided with inclined grooves corresponding to several groups of the preliminary filter plates. The preliminary filter plates are clamped between the two groups of positioning side plates through the inclined grooves. The positioning folding snap rings are provided with several groups corresponding to several groups of the preliminary filter plates. Several groups of positioning folding snap rings are respectively arranged on one side of several groups of the preliminary filter plates and fixedly connected to the corresponding preliminary filter plates. The positioning folding snap rings are clamped with the corresponding positioning side plates.

[0012] The secondary positioning assembly includes a secondary positioning slot, a limiting top block and a supporting structure. The secondary positioning slots are provided with two groups corresponding to the two groups of secondary filters. The two groups of secondary positioning slots are arranged side by side at intervals on the inner lower part of the body and are fixedly connected to the body. The lower parts of the two groups of secondary filters are respectively arranged in the two groups of secondary positioning slots. The limiting top block is arranged on the inner upper part of the body and is fixedly connected to the body. The upper parts of the two groups of secondary filters are abutted against the two sides of the limiting top block. There are two groups of supporting structures. The two groups of supporting structures are symmetrically arranged on the inner upper part of the body and on both sides of the limiting top block.

[0013] The supporting structure includes a supporting bracket, a supporting screw and a supporting base block. The supporting bracket is arranged on the upper inner side of the machine body and is fixedly connected to the machine body. The supporting screw is arranged in the middle of the supporting bracket and passes through the supporting bracket and is threadedly connected to the supporting bracket. The supporting base block is arranged at one end of the supporting screw close to the limiting supporting block and is rotatably connected to the supporting screw. The supporting base block abuts against the upper part of the corresponding secondary filter.

[0014] It also includes a supporting anti-skid pad, which is arranged on a side of the supporting base block close to the secondary filter and is fixedly connected to the supporting base block. The supporting base block abuts against the secondary filter through the supporting anti-skid pad.

[0015] The miscellaneous collection mechanism includes a miscellaneous collection frame and a miscellaneous collection box. The miscellaneous collection frame is arranged at the bottom of the machine body corresponding to the preliminary filter plate and is fixedly connected to the machine body. The upper part of the miscellaneous collection frame is communicated with the interior of the machine body. The miscellaneous collection box is arranged inside the miscellaneous collection frame and is embedded in the miscellaneous collection frame. The upper part of the miscellaneous collection box is provided with an opening structure.

[0016] The beneficial effects of the utility model are:

[0017] It is equipped with a filtering mechanism, which forms a double filtering structure through the oblique filter plate and the vertical filter, which can filter and purify the sewage in a comprehensive and multi-angle manner to ensure that the discharged water quality meets the standards, avoid the accumulation of impurities at the bottom of the filter plate and the escape phenomenon, ensure the filtering effect, and the spacing between the filter plates is small, the filtering efficiency is high, and it is equipped with a positioning mechanism, which can stably install and position filters of different specifications, and can realize the rapid installation of the filter. It is equipped with a debris collection mechanism to collect impurities for easy cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the coordination between the water outlet and the machine body of the utility model;

[0020] Figure 3 This is a cross-sectional view of the filter mechanism and the body of the utility model;

[0021] Figure 4 This is a schematic diagram of the cooperation between the positioning mechanism and the filtering mechanism of the utility model;

[0022] Figure 5 This is a side view of the positioning mechanism and the filtering mechanism of the utility model;

[0023] Figure 6 It is a schematic diagram of the supporting structure of the utility model.

[0024] In the figure: 1. Machine body; 2. Water inlet; 3. Water outlet; 4. Primary filter plate; 5. Primary opening and closing door; 6. Secondary filter; 7. Secondary opening and closing door; 8. Liquid inlet baffle; 9. Positioning side panel; 10. Positioning folding clamp; 11. Secondary positioning slot; 12. Limiting top block; 13. Support bracket; 14. Support screw; 15. Support base block; 16. Support anti-slip pad; 17. Miscellaneous collection frame; 18. Miscellaneous collection box. DETAILED DESCRIPTION

[0025] The present invention is described in further detail below with reference to the accompanying drawings.

[0026] A plate filter device for sewage treatment includes a body 1, which is erected on the ground and further includes a filtering mechanism for double filtering of sewage, a positioning mechanism for installing and positioning the filtering mechanism, and a collecting mechanism for collecting impurities. The filtering mechanism is arranged inside the body 1, the positioning mechanism is arranged on the inner side of the body 1 corresponding to the filtering mechanism, and the collecting mechanism is arranged at the bottom of the body 1. The overall structural diagram of the utility model is shown as follows Figure 1 shown.

[0027] The filtration mechanism includes a water inlet 2, a water outlet 3, a primary filtration component and a secondary filtration component. The water inlet 2 is arranged on one side of the body 1 and passes through the body 1. The water outlet 3 is arranged on the side of the body 1 away from the water inlet 2 and passes through the body 1. The water outlet 3 is arranged corresponding to the water inlet 2. The primary filtration component is arranged on a side of the body 1 close to the water inlet 2, and the secondary filtration component is arranged on a side of the body 1 close to the water outlet 3. The filtration mechanism cooperates with the water inlet 2, the water outlet 3, the primary filtration component and the secondary filtration component to form a secondary filtration structure to perform secondary filtration on the sewage. Among them, the water inlet 2 is used as the water inlet structure of the body 1 to meet the water inlet demand, and the water outlet 3 is used as the water outlet structure of the body 1 to meet the water outlet demand. The primary filtration component is used to form a tilted filtration structure to perform preliminary filtration on the sewage, and the secondary filtration component is used to form a secondary filtration structure together with the primary filtration component to perform secondary filtration on the sewage. The schematic diagram of the cooperation between the water outlet 3 and the body 1 of the utility model is shown in Figure 2 shown.

[0028] The preliminary filter assembly includes a preliminary filter plate 4 and a preliminary opening and closing door 5. The preliminary filter plate 4 is provided with several groups. Several groups of preliminary filter plates 4 are tilted and arranged inside the body 1 through a positioning mechanism, and several groups of preliminary filter plates 4 are arranged parallel to each other. There are two groups of preliminary opening and closing doors 5. The two groups of preliminary opening and closing doors 5 are symmetrically arranged on both sides of the body 1 corresponding to the preliminary filter plates 4 and are hinged to the body 1. The preliminary filter assembly cooperates with the preliminary filter plates 4 and the preliminary opening and closing door 5 to form an oblique filter structure for preliminary filtration of sewage, wherein the preliminary filter plates 4 are used to form an oblique filter structure for preliminary filtration of sewage, and the inclined preliminary filter plates 4 can prevent impurities from accumulating at the bottom of the filter plates and escaping. The preliminary opening and closing door 5 is used as an opening and closing door structure corresponding to the preliminary filter plates 4 on the side of the body 1. The opening and closing door can be opened or closed to meet the maintenance needs of the preliminary filter plates 4. The cross-sectional view of the filter mechanism of the utility model and the body 1 is shown in FIG. Figure 3 shown.

[0029] The secondary filtration component includes a secondary filter 6 and a secondary opening and closing door 7. There are two groups of secondary filters 6. The two groups of secondary filters 6 are arranged side by side inside the body 1 and are fixedly connected to the body 1 through a positioning mechanism. The two groups of secondary filters 6 are arranged vertically. There are two groups of secondary opening and closing doors 7. The two groups of secondary opening and closing doors 7 are symmetrically arranged on both sides of the body 1 corresponding to the secondary filters 6 and are hinged to the body 1. The secondary filtration component cooperates with the secondary filter 6 and the secondary opening and closing door 7 to form a secondary filtration structure together with the primary filtration component to perform secondary filtration on the sewage. Among them, the secondary filter 6 is used to perform secondary filtration on the sewage, and the secondary opening and closing door 7 is used as an opening and closing door structure corresponding to the secondary filter 6 on the side of the body 1. The opening and closing door can be opened or closed to meet the maintenance needs of the secondary filter 6.

[0030] The positioning mechanism includes a liquid inlet baffle 8, a preliminary positioning component and a secondary positioning component. The liquid inlet baffle 8 is arranged at the lower inner part of the body 1 and is fixedly connected to the body 1. The liquid inlet baffle 8 is arranged on the side of the body 1 close to the preliminary filter plate 4. The preliminary positioning component corresponds to the preliminary filter plate 4 and is arranged on the side of the body 1. The secondary positioning component corresponds to the secondary filter 6 and is arranged at the upper and lower ends of the interior of the body 1. The positioning mechanism cooperates with the liquid inlet baffle 8, the preliminary positioning component and the secondary positioning component to install and position the preliminary filter assembly and the secondary filter assembly. Among them, the liquid inlet baffle 8 is used as a baffle structure on the side of the water inlet 2 inside the body 1, which can prevent sewage from directly settling into the collecting mechanism after entering the body 1. The preliminary positioning component is used to install and position the preliminary filter plate 4, and the secondary positioning component is used to install and position the secondary filter 6. The schematic diagram of the cooperation between the positioning mechanism and the filtering mechanism of the utility model is shown in the figure. Figure 4 shown.

[0031] The filter element 4 is fixedly connected to the filter housing 1 by means of a plurality of positioning clamps 10. The filter element 4 is fixedly connected to the filter housing 1 by means of a plurality of positioning clamps 10. Figure 5 shown.

[0032] The secondary positioning assembly includes a secondary positioning slot 11, a limiting top block 12 and a top holding structure. The secondary positioning slot 11 is provided with two groups corresponding to the two groups of secondary filters 6. The two groups of secondary positioning slots 11 are arranged side by side at intervals on the inner lower part of the body 1 and are fixedly connected to the body 1. The lower parts of the two groups of secondary filters 6 are respectively arranged in the two groups of secondary positioning slots 11. The limiting top block 12 is provided on the inner upper part of the body 1 and is fixedly connected to the body 1. The upper parts of the two groups of secondary filters 6 are abutted against both sides of the limiting top block 12. The top holding structure is provided with two groups, and the two groups of top holding structures are symmetrically arranged. Located on the upper inner side of the body 1 and on both sides of the limiting top block 12, the secondary positioning component cooperates with the secondary positioning slot 11, the limiting top block 12 and the supporting structure to install and position the secondary filter 6, wherein the secondary positioning slot 11 is used as a slot structure at the bottom of the body 1, thereby providing positioning support for the lower part of the secondary filter 6, the limiting top block 12 is used as a limiting structure at the top of the body 1, thereby providing limiting support for the upper part of the secondary filter 6, and the supporting structure is used to cooperate with the limiting top block 12 to support and position the upper part of the secondary filter 6.

[0033] The supporting structure includes a supporting bracket 13, a supporting screw 14 and a supporting base block 15. The supporting bracket 13 is arranged on the inner upper part of the body 1 and is fixedly connected to the body 1. The supporting screw 14 is arranged in the middle of the supporting bracket 13 and passes through the supporting bracket 13 and is threadedly connected to the supporting bracket 13. The supporting base block 15 is arranged at one end of the supporting screw 14 close to the limiting top block 12 and is rotatably connected to the supporting screw 14. The supporting base block 15 abuts against the upper part of the corresponding secondary filter 6. The supporting structure cooperates with the supporting bracket 13, the supporting screw 14 and the supporting base block 15. , the upper part of the secondary filter 6 is supported and positioned, wherein the supporting bracket 13 is used to provide installation support for the supporting screw 14, and the supporting screw 14 is used to provide installation support for the supporting base block 15 and drive the supporting base block 15 to move horizontally through the relative rotation between the supporting screw 14 and the supporting bracket 13. The supporting base block 15 is used to move horizontally under the action of the supporting screw 14 to adjust the distance between the supporting base block 15 and the limiting top block 12, thereby cooperating with the limiting top block 12 to support and position the upper part of the secondary filter 6. The schematic diagram of the supporting structure of the utility model is shown as follows Figure 6 shown.

[0034] It also includes a supporting anti-slip pad 16, which is arranged on the side of the supporting base block 15 close to the secondary filter 6 and is fixedly connected to the supporting base block 15. The supporting base block 15 is in contact with the secondary filter 6 through the supporting anti-slip pad 16, wherein the supporting anti-slip pad 16 is used as an anti-slip structure on the supporting base block 15 to enhance the anti-slip effect between the supporting base block 15 and the secondary filter 6, thereby enhancing the positioning stability of the secondary filter 6.

[0035] The impurity collecting mechanism includes a impurity collecting frame 17 and a impurity collecting box 18. The impurity collecting frame 17 is arranged at the bottom of the body 1 corresponding to the preliminary filter plate 4 and is fixedly connected to the body 1. The upper part of the impurity collecting frame 17 is communicated with the interior of the body 1. The impurity collecting box 18 is arranged inside the impurity collecting frame 17 and is embedded in the impurity collecting frame 17. The upper part of the impurity collecting box 18 is provided with an opening structure. The impurity collecting mechanism cooperates with the impurity collecting frame 17 and the impurity collecting box 18 to form a impurity collecting structure at the bottom of the body 1, thereby collecting impurities filtered out by the preliminary filter plate 4 for cleaning operations. The impurity collecting frame 17 is used to provide installation support for the impurity collecting box 18, and the impurity collecting box 18 is used to collect impurities filtered out by the preliminary filter plate 4 for cleaning operations.

[0036] Working principle:

[0037] During use, sewage enters the body 1 through the water inlet 2, and the inclined preliminary filter plate 4 performs preliminary filtration on the sewage. The filtered impurities fall into the collecting box 18 along the preliminary filter plate 4, and the sewage after preliminary filtration flows to the secondary filter assembly, and the secondary filter 6 performs secondary filtration on the sewage. The sewage after secondary filtration flows out of the body 1 through the water outlet 3, and the sewage filtration operation is completed. When the preliminary filter plate 4 needs to be disassembled and replaced, the preliminary opening and closing door 5 is opened, and the preliminary filter plate 4 can be taken out from the positioning side plate 9 through the positioning folding clamp 10, and the preliminary filter plate 4 can be disassembled and replaced. When the secondary filter 6 needs to be disassembled and replaced, the secondary opening and closing door 7 is opened, and the supporting screw 14 is rotated to drive the supporting base block 15 to move horizontally, so that the supporting base block 15 is away from the secondary filter 6. Then the secondary filter 6 is taken out from the secondary slot, and the secondary filter 6 can be disassembled and replaced.

[0038] The beneficial effect of the present invention is that it is provided with a filtering mechanism, which forms a double filtering structure through the oblique filter plate and the vertical filter, which can filter and purify sewage in a comprehensive and multi-angle manner, ensure that the discharged water quality meets the standards, avoid impurities accumulating at the bottom of the filter plate and escaping, ensure the filtering effect, and the spacing between the filter plates is small, the filtering efficiency is high, and a positioning mechanism is provided, which can stably install and position filters of different specifications, and can realize rapid installation of the filter, and a collection mechanism is provided to collect impurities for easy cleaning.

[0039] The above describes an embodiment of the present invention in detail. However, the content is only a preferred embodiment of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A plate filter device for sewage treatment, comprising a body (1), wherein the body (1) is erected on the ground, and is characterized in that: It also includes a filtering mechanism for double filtering sewage, a positioning mechanism for installing and positioning the filtering mechanism, and a collection mechanism for collecting impurities. The filtering mechanism is arranged inside the body (1), the positioning mechanism is arranged on the inner side of the body (1) corresponding to the filtering mechanism, and the collection mechanism is arranged at the bottom of the body (1).

2. A plate filter device for sewage treatment according to claim 1, characterized in that: The filtering mechanism comprises a water inlet (2), a water outlet (3), a primary filtering assembly and a secondary filtering assembly, wherein the water inlet (2) is arranged on one side of the machine body (1) and passes through the machine body (1), the water outlet (3) is arranged on a side of the machine body (1) away from the water inlet (2) and passes through the machine body (1), the water outlet (3) is arranged corresponding to the water inlet (2), the primary filtering assembly is arranged on a side of the machine body (1) close to the water inlet (2), and the secondary filtering assembly is arranged on a side of the machine body (1) close to the water outlet (3).

3. A plate filter device for sewage treatment according to claim 2, characterized in that: The preliminary filter assembly comprises a preliminary filter plate (4) and a preliminary opening and closing door (5), wherein the preliminary filter plate (4) is provided in a plurality of groups, wherein the plurality of groups of the preliminary filter plates (4) are tiltedly arranged inside the machine body (1) through a positioning mechanism and the plurality of groups of the preliminary filter plates (4) are arranged parallel to each other, and wherein the preliminary opening and closing door (5) is provided in two groups, wherein the two groups of the preliminary opening and closing doors (5) are symmetrically arranged on both sides of the machine body (1) corresponding to the preliminary filter plates (4) and are hinged to the machine body (1).

4. A plate filter device for sewage treatment according to claim 3, characterized in that: The secondary filter assembly comprises a secondary filter (6) and a secondary opening and closing door (7). The secondary filter (6) is provided with two groups. The two groups of secondary filters (6) are arranged side by side and spaced apart inside the machine body (1) and are fixedly connected to the machine body (1) through a positioning mechanism. The two groups of secondary filters (6) are arranged vertically. The secondary opening and closing door (7) is provided with two groups. The two groups of secondary opening and closing doors (7) are symmetrically arranged on both sides of the machine body (1) corresponding to the secondary filters (6) and are hinged to the machine body (1).

5. A plate filter device for sewage treatment according to claim 4, characterized in that: The positioning mechanism comprises a liquid inlet baffle (8), a primary positioning assembly, and a secondary positioning assembly. The liquid inlet baffle (8) is arranged at the lower inner portion of the body (1) and is fixedly connected to the body (1). The liquid inlet baffle (8) is arranged on a side of the body (1) close to the primary filter plate (4). The primary positioning assembly is arranged on the side of the body (1) corresponding to the primary filter plate (4). The secondary positioning assembly is arranged at the upper and lower ends of the interior of the body (1) corresponding to the secondary filter (6).

6. A plate filter device for sewage treatment according to claim 5, characterized in that: The preliminary positioning assembly includes a positioning side plate (9) and a positioning folding snap ring (10). The positioning side plates (9) are provided with two groups. The two groups of positioning side plates (9) are symmetrically arranged on both sides of the interior of the machine body (1) and fixedly connected to the machine body (1). The positioning side plates (9) are provided with inclined grooves corresponding to the plurality of groups of preliminary filter plates (4). The preliminary filter plates (4) are clamped between the two groups of positioning side plates (9) through the inclined grooves. The positioning folding snap rings (10) are provided with a plurality of groups corresponding to the plurality of groups of preliminary filter plates (4). The plurality of groups of positioning folding snap rings (10) are respectively arranged on one side of the plurality of groups of preliminary filter plates (4) and fixedly connected to the corresponding preliminary filter plates (4). The positioning folding snap rings (10) are clamped with the corresponding positioning side plates (9).

7. A plate filter device for sewage treatment according to claim 6, characterized in that: The secondary positioning component comprises a secondary positioning slot (11), a limiting top block (12) and a supporting structure. The secondary positioning slot (11) is provided with two groups corresponding to the two groups of secondary filters (6). The two groups of secondary positioning slots (11) are arranged side by side at intervals on the inner lower part of the body (1) and are fixedly connected to the body (1). The lower parts of the two groups of secondary filters (6) are arranged in the two groups of secondary positioning slots (11) respectively. The limiting top block (12) is arranged on the inner upper part of the body (1) and is fixedly connected to the body (1). The upper parts of the two groups of secondary filters (6) abut against both sides of the limiting top block (12). There are two groups of supporting structures. The two groups of supporting structures are symmetrically arranged on the inner upper part of the body (1) and are located on both sides of the limiting top block (12).

8. A plate filter device for sewage treatment according to claim 7, characterized in that: The supporting structure comprises a supporting bracket (13), a supporting screw (14) and a supporting base block (15); the supporting bracket (13) is arranged at the upper inner portion of the machine body (1) and is fixedly connected to the machine body (1); the supporting screw (14) is arranged at the middle portion of the supporting bracket (13) and passes through the supporting bracket (13) and is threadedly connected to the supporting bracket (13); the supporting base block (15) is arranged at one end of the supporting screw (14) close to the limiting supporting block (12) and is rotatably connected to the supporting screw (14); the supporting base block (15) abuts against the upper portion of the corresponding secondary filter (6).

9. A plate filter device for sewage treatment according to claim 8, characterized in that: It also includes a supporting anti-skid pad (16), which is arranged on a side of the supporting base block (15) close to the secondary filter (6) and is fixedly connected to the supporting base block (15), and the supporting base block (15) is in contact with the secondary filter (6) through the supporting anti-skid pad (16).

10. A plate filter device for sewage treatment according to claim 9, characterized in that: The miscellaneous matter collecting mechanism comprises a miscellaneous matter collecting frame (17) and a miscellaneous matter collecting box (18); the miscellaneous matter collecting frame (17) is arranged at the bottom of the machine body (1) corresponding to the preliminary filter plate (4) and is fixedly connected to the machine body (1); the upper part of the miscellaneous matter collecting frame (17) is communicated with the interior of the machine body (1); the miscellaneous matter collecting box (18) is arranged inside the miscellaneous matter collecting frame (17) and is embedded and connected to the miscellaneous matter collecting frame (17); and the upper part of the miscellaneous matter collecting box (18) is provided with an opening structure.

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