Chemical sewage preliminary filtration treatment device for environmental pollution control

By designing a device for chemical sewage treatment, using a stirring and dredging mechanism to avoid congestion, and preventing filter frame displacement through a limiting device, the problem of reducing filtration efficiency caused by congestion in the prior art is solved, and more efficient sewage treatment is achieved.

CN119591182APending Publication Date: 2025-03-11HARBIN INST OF PETROLEUM
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Patent Information

Application Number
CN202510076451.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-17
Publication Date
2025-03-11

AI Technical Summary

Technical Problem

In existing chemical sewage treatment devices, smaller solid particles on the filter screen cannot be completely eliminated, resulting in gradually accumulation of sewage blockage on the filter screen surface, reducing filtration efficiency and sewage treatment efficiency.

Method used

A preliminary filtering and treatment device for chemical sewage treatment in environmental pollution was designed, using motor, stirring shaft, and stirring blades to mix and stir sewage and flocculant, and the first filter frame was unblocked through a dredging brush and scraper to avoid dirt blockage. At the same time, through the cooperation of the spring, the limit groove and the limit plate, the limit rod is inserted into the positioning hole to limit the first filter frame to prevent displacement.

Benefits of technology

It effectively avoids dirt blockage, improves sewage treatment efficiency, ensures continuous optimization of filtration effect, and extends the service life of the device.

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Abstract

The invention relates to the technical field of environmental governance, and discloses an environmental pollution governance chemical sewage preliminary filtration treatment device which comprises a filter box, a feeding hopper and a water outlet, a mounting frame and two limiting frames are fixed to the two sides of the filter box, and a first filter frame and a second filter frame are slidably arranged in the mounting frame and the limiting frames correspondingly; a first spring is fixed to the side wall of an inner cavity of the limiting frame on one side, inserting holes are formed in the side wall of the filter box, push rods slide in the inserting holes, a push plate is fixed to one ends of the push rods, a mounting plate is fixed to the filter box, a first motor is mounted on the side wall of the mounting plate, a cam is mounted at the output shaft end of the first motor, and a second motor is fixed to the outer side of the filter box. A stirring shaft is fixed to the output shaft end of the second motor, stirring blades are fixed to the side wall of the stirring shaft, and scraping plates and dredging brushes are installed on the side walls of the stirring blades. Sewage and a flocculating agent are mixed and stirred through cooperation of the second motor, the stirring shaft and the stirring blades, the first filter frame is dredged through the dredging brush and the scraper when the stirring blades rotate, and the sewage treatment efficiency is improved.
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Description

Technical Field

[0001] The invention relates to the technical field of environmental treatment, and in particular to a preliminary filtering and treating device for chemical wastewater for environmental pollution treatment. Background Art

[0002] With the improvement of environmental protection and sustainable development awareness, the sewage treatment industry has achieved unprecedented development. Whether it is domestic sewage or industrial sewage, it contains certain particulate impurities and needs to be filtered.

[0003] After searching the publication (announcement) number: CN219044853U, a multi-stage wastewater treatment device based on chemical product processing is disclosed, including a device housing, a control panel is fixedly installed at the front end of the device housing, a support foot is fixedly installed at the lower end of the device housing, a protective cover is movably installed at the upper end of the device housing, a handle and a water inlet are fixedly installed at the upper end of the protective cover, the water inlet is located on one side of the handle, a feed inlet and a drive motor are fixedly installed on one side of the device housing, and the feed inlet is located at the upper end of the drive motor. The utility model discloses a multi-stage wastewater treatment device based on chemical product processing, which performs preliminary filtration on chemical wastewater through a filter mesh, and when the wastewater enters the second layer stirring chamber, the stirring shaft rotates to drive the stirring blades to stir the sewage in the inner cavity of the box body, accelerates the mixing between the sewage and the flocculant, and then passes through the second filter mesh to filter, thereby improving the efficiency of sewage treatment and bringing better prospects for use.

[0004] In the above-mentioned prior art solution, the larger slag blocks on the filter screen can be discharged through the slag discharge pipe, but there may still be some smaller solid particles that cannot be completely discharged. These particles may gradually accumulate on the surface of the filter screen when passing through the filter screen in the future, forming a fouling blockage, resulting in a reduction in filtration efficiency, and may eventually cause blockage, reducing the sewage treatment efficiency.

[0005] To this end, we propose a preliminary filtration and treatment device for chemical wastewater for environmental pollution control. Summary of the invention

[0006] The present invention mainly solves the technical problems existing in the above-mentioned prior art and provides a preliminary filtering treatment device for chemical wastewater for environmental pollution control.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a preliminary filtration treatment device for chemical wastewater for environmental pollution control, comprising a filter box, a hopper and a water outlet, a mounting frame and two sets of limit frames are fixed on both sides of the filter box, a first filter frame and a second filter frame are respectively slid in the mounting frame and the limit frame, wherein a plurality of springs are fixed to the side walls of the inner cavity of one side of the limit frame, a socket is opened on the side walls of the filter box, a push rod slides in the socket, a push plate is fixed to one end of the push rod, a mounting plate is fixed on the filter box, a motor is installed on the side wall of the mounting plate, a cam is installed on the output shaft end of the motor, a motor is fixed on the outside of the filter box, a stirring shaft is fixed on the output shaft end of the motor, a stirring blade is fixed on the side walls of the stirring shaft, and a scraper and a dredging brush are respectively installed on the side walls of the stirring blade.

[0008] Preferably, a second positioning hole is provided at the front end of one side of the first filter frame, a first positioning hole is provided at one side of the mounting frame, a fixing frame is fixed to the top wall of the mounting frame, a second spring is fixedly connected to the top wall of the inner cavity of the fixing frame, a limiting plate is fixed to the other end of the second spring, a limiting groove is provided on the side wall of the fixing frame, and a limiting rod is slidably connected in the limiting groove.

[0009] Preferably, one end of the limiting rod close to the limiting plate is fixedly connected to the wall surface of the limiting plate, and the limiting groove corresponds to the positioning hole.

[0010] Preferably, both ends of the bottom of the feed hopper are movably connected to feed quantitative plates, and both sides of the inner cavity of the filter box and located above the mounting frame are fixedly connected to push plates.

[0011] Preferably, the extended ends of the two push plates are in contact with the bottom wall surface of the feed quantitative plate.

[0012] Preferably, the apertures of the sieve holes on the second filter frame decrease in sequence, and the spring 1 fits against the side wall surface of the second filter frame.

[0013] Preferably, the mounting plate is an L-shaped structure, and the stirring blade is an overall C-shaped structure.

[0014] The present invention provides a preliminary filtration treatment device for chemical wastewater for environmental pollution control.

[0015] Beneficial effects:

[0016] 1. This kind of environmental pollution control chemical wastewater preliminary filtration treatment device mixes and stirs the sewage and flocculant through the cooperation of motor 2, stirring shaft and stirring blades. While the stirring blades rotate, the dredging brush and scraper dredge the first filter frame to avoid dirt clogging in the filter holes, thereby improving the sewage treatment efficiency.

[0017] 2. This kind of environmental pollution control chemical wastewater preliminary filtration treatment device, through the cooperation of spring 2, limit groove, and limit plate, the limit rod is inserted into positioning hole 1 and positioning hole 2 to limit the first filter frame, thereby avoiding displacement of the first filter frame when the dredging brush and scraper are used to dredge the first filter frame.

[0018] 3. This kind of environmental pollution control chemical wastewater preliminary filtration treatment device can control the flow of wastewater entering the inner cavity of the filter box through the cooperation of the electric push rod and the feed quantitative plate, so as to achieve a better filtration effect.

[0019] 4. This device for preliminary filtration and treatment of chemical wastewater for environmental pollution control achieves better filtration effect through layer-by-layer filtration of the first filter frame and the second filter frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the implementation of the present invention or the technical solution in the prior art, the following briefly introduces the drawings required for the implementation or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0021] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0022] Figure 1 It is a three-dimensional schematic diagram of the structure of the present invention;

[0023] Figure 2 It is a rear view schematic diagram of the structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the inner cavity of the filter box structure of the present invention;

[0025] Figure 4 This is a three-dimensional schematic diagram of the stirring blade structure of the present invention;

[0026] Figure 5 It is a schematic diagram of the disassembly of the first filter frame, the fixing frame and the installation frame of the present invention.

[0027] Legend:

[0028] 1. Filter box; 101. Water outlet; 2. Feed hopper; 201. Electric push rod; 202. Feed quantitative plate; 3. Motor 1; 301. Cam; 302. Mounting plate; 4. Push plate; 401. Push rod; 402. Socket; 5. Mounting frame; 501. First filter frame; 502. Positioning hole 1; 503. Positioning hole 2; 6. Motor 2; 601. Stirring shaft; 602. Stirring blade; 603. Through hole; 604. Scraper; 605. Dredge brush; 7. Limiting frame; 701. Second filter frame; 8. Spring 1; 9. Fixed frame; 901. Spring 2; 902. Limiting plate; 903. Limiting groove; 904. Limiting rod. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Embodiment 1: A preliminary filtration treatment device for chemical wastewater for environmental pollution control, such as Figure 1-Figure 5 As shown, it includes a filter box 1, the top of the filter box 1 is connected to a Y-shaped material feeding hopper 2, the bottom of the filter box 1 is connected to a water outlet 101, both sides of the upper wall of the inner cavity of the filter box 1 are fixedly connected with mounting frames 5, the inner cavity of the mounting frame 5 is slidably connected with a first filter frame 501, two walls of the inner cavity of the filter box 1 and located below the first filter frame 501 are fixedly connected with two groups of limit frames 7, the inner cavities of the two groups of limit frames 7 are both provided with second filter frames 701, the apertures of the sieve holes on the second filter frame 701 decrease successively, and a plurality of springs 8 are fixedly connected to the side wall surface of the inner cavity of one side of the limit frame 7, the spring 8 and the side wall surface of the second filter frame 701 are fitted with each other, and a plug hole 402 is provided on the wall surface of the side of the filter box 1 away from the spring 8, and there are two groups of plug holes 402, and the inner cavities of the plug holes 402 are slidably connected with push rods 401, one end of the push rod 401 away from the socket 402 is fixedly connected with a push plate 4 of a rectangular structure, and a mounting plate 302 of an L-shaped structure is fixedly connected to the wall of the filter box 1 on one side of the push plate 4, and a motor 3 is fixedly installed on the side wall of the mounting plate 302, and a cam 301 is fixedly installed on the output shaft end of the motor 3, and the side wall of the cam 301 fits with the surface of the push plate 4. The center of the outer wall of the filter box 1 is fixedly connected with a motor 2 6, and the output shaft end of the motor 2 6 penetrates the side wall of the filter box 1 and is fixedly connected with a stirring shaft 601, and a plurality of stirring blades 602 are fixedly connected to the side wall of the stirring shaft 601. The stirring blade 602 is a C-shaped structure as a whole, and a plurality of through holes 603 are opened on the stirring blade 602. Scrapers 604 and dredging brushes 605 are respectively installed on the side walls of the stirring blades 602 away from each other.

[0031] Embodiment 2: A preliminary filtration and treatment device for chemical wastewater for environmental pollution control, such as Figure 1-Figure 5 As shown, it includes a filter box 1, the top of the filter box 1 is connected to a Y-shaped material feeding hopper 2, the bottom of the filter box 1 is connected to a water outlet 101, both sides of the upper wall of the inner cavity of the filter box 1 are fixedly connected with mounting frames 5, the inner cavity of the mounting frame 5 is slidably connected with a first filter frame 501, two walls of the inner cavity of the filter box 1 and located below the first filter frame 501 are fixedly connected with two groups of limit frames 7, the inner cavities of the two groups of limit frames 7 are both provided with second filter frames 701, the apertures of the sieve holes on the second filter frame 701 decrease successively, and a plurality of springs 8 are fixedly connected to the side wall surface of the inner cavity of one side of the limit frame 7, the spring 8 and the side wall surface of the second filter frame 701 are fitted with each other, and a plug hole 402 is provided on the wall surface of the side of the filter box 1 away from the spring 8, and there are two groups of plug holes 402, and the inner cavities of the plug holes 402 are slidably connected with push rods 401, one end of the push rod 401 away from the socket 402 is fixedly connected with a push plate 4 of a rectangular structure, and a mounting plate 302 of an L-shaped structure is fixedly connected to the wall of the filter box 1 on one side of the push plate 4, and a motor 3 is fixedly installed on the side wall of the mounting plate 302, and a cam 301 is fixedly installed on the output shaft end of the motor 3, and the side wall of the cam 301 fits with the surface of the push plate 4. The center of the outer wall of the filter box 1 is fixedly connected with a motor 2 6, and the output shaft end of the motor 2 6 penetrates the side wall of the filter box 1 and is fixedly connected with a stirring shaft 601, and a plurality of stirring blades 602 are fixedly connected to the side wall of the stirring shaft 601. The stirring blade 602 is a C-shaped structure as a whole, and a plurality of through holes 603 are opened on the stirring blade 602. Scrapers 604 and dredging brushes 605 are respectively installed on the side walls of the stirring blades 602 away from each other.

[0032] A second positioning hole 503 is provided at the front end of one side of the first filter frame 501, a first positioning hole 502 is provided on one side of the mounting frame 5 and at a position corresponding to the second positioning hole 503, a fixing frame 9 is fixedly connected to the top wall of the mounting frame 5 and at a position matching the first positioning hole 502, a second spring 901 is fixedly connected to the top wall of the inner cavity of the fixing frame 9, the other end of the second spring 901 is fixedly connected to a limiting plate 902, a limiting groove 903 is provided on the side wall of the fixing frame 9 close to the mounting frame 5 and at a position corresponding to the first positioning hole 502, the inner cavity of the limiting groove 903 is slidably connected to a limiting rod 904, and one end of the limiting rod 904 close to the limiting plate 902 is fixedly connected to the wall surface of the limiting plate 902.

[0033] Embodiment 3: A preliminary filtration and treatment device for chemical wastewater for environmental pollution control, such as Figure 1-Figure 5As shown, it includes a filter box 1, the top of the filter box 1 is connected to a Y-shaped material feeding hopper 2, the bottom of the filter box 1 is connected to a water outlet 101, both sides of the upper wall of the inner cavity of the filter box 1 are fixedly connected with mounting frames 5, the inner cavity of the mounting frame 5 is slidably connected with a first filter frame 501, two walls of the inner cavity of the filter box 1 and located below the first filter frame 501 are fixedly connected with two groups of limit frames 7, the inner cavities of the two groups of limit frames 7 are both provided with second filter frames 701, the apertures of the sieve holes on the second filter frame 701 decrease successively, and a plurality of springs 8 are fixedly connected to the side wall surface of the inner cavity of one side of the limit frame 7, the spring 8 and the side wall surface of the second filter frame 701 are fitted with each other, and a plug hole 402 is provided on the wall surface of the side of the filter box 1 away from the spring 8, and there are two groups of plug holes 402, and the inner cavities of the plug holes 402 are slidably connected with push rods 401, one end of the push rod 401 away from the socket 402 is fixedly connected with a push plate 4 of a rectangular structure, and a mounting plate 302 of an L-shaped structure is fixedly connected to the wall of the filter box 1 on one side of the push plate 4, and a motor 3 is fixedly installed on the side wall of the mounting plate 302, and a cam 301 is fixedly installed on the output shaft end of the motor 3, and the side wall of the cam 301 fits with the surface of the push plate 4. The center of the outer wall of the filter box 1 is fixedly connected with a motor 2 6, and the output shaft end of the motor 2 6 penetrates the side wall of the filter box 1 and is fixedly connected with a stirring shaft 601, and a plurality of stirring blades 602 are fixedly connected to the side wall of the stirring shaft 601. The stirring blade 602 is a C-shaped structure as a whole, and a plurality of through holes 603 are opened on the stirring blade 602. Scrapers 604 and dredging brushes 605 are respectively installed on the side walls of the stirring blades 602 away from each other.

[0034] A second positioning hole 503 is provided at the front end of one side of the first filter frame 501, a first positioning hole 502 is provided on one side of the mounting frame 5 and at a position corresponding to the second positioning hole 503, a fixing frame 9 is fixedly connected to the top wall of the mounting frame 5 and at a position matching the first positioning hole 502, a second spring 901 is fixedly connected to the top wall of the inner cavity of the fixing frame 9, the other end of the second spring 901 is fixedly connected to a limiting plate 902, a limiting groove 903 is provided on the side wall of the fixing frame 9 close to the mounting frame 5 and at a position corresponding to the first positioning hole 502, the inner cavity of the limiting groove 903 is slidably connected to a limiting rod 904, and one end of the limiting rod 904 close to the limiting plate 902 is fixedly connected to the wall surface of the limiting plate 902.

[0035] Both ends of the bottom of the feed hopper 2 are movably connected with feed quantitative plates 202, and push plates 4 are fixedly connected to both sides of the inner cavity of the filter box 1 and located above the mounting frame 5. The protruding ends of the two push plates 4 are in contact with the bottom wall of the feed quantitative plates 202. The size of the opening of the feed quantitative plates 202 is driven by starting the electric push rod 201 to control the water volume.

[0036] Working principle of the present invention:

[0037] When in use, sewage enters the inner cavity of the filter box 1 through the feed hopper 2 for filtration. At the same time, the motor 2 6 is started to drive the stirring blade 602 on the stirring shaft 601 to mix and stir the sewage and flocculant. While the stirring blade 602 rotates, the dredging brush 605 and the scraper 604 dredge the first filter frame 501 to avoid clogging the filter holes of the first filter frame 501 and causing poor material discharge. The motor 1 3 is started to drive the cam 301 to rotate. The cam 301 rotates and the convex end squeezes the push plate 4 to move the second filter frame 701 to the right. After the convex end of the cam 301 turns away from the push plate 4, the push plate 4 is reset under the action of the spring 1 8, and the mountain sewage finally flows out from the outlet 101.

[0038] When in use, the limiting rod 904 is inserted into the inner cavity of the positioning hole 1 502 and the positioning hole 2 503 through the cooperation of the spring 2 901 and the limiting plate 902 to limit the first filter frame 501 and prevent the first filter frame 501 from being displaced when the unblocking brush 605 and the scraper 604 unblock the first filter frame 501.

[0039] When in use, the opening and closing size of the two feed quantitative plates 202 can be controlled through the cooperation of the electric push rod 201 and the feed quantitative plates 202, and the flow rate of sewage entering the inner cavity of the filter box 1 can be controlled, so that the filtering effect is better.

[0040] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0046] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A preliminary filtration treatment device for chemical wastewater for environmental pollution control, comprising a filter box (1), a hopper (2) and a water outlet (101), characterized in that: The filter box (1) is fixed with an installation frame (5) and two sets of limit frames (7) on both sides, and a first filter frame (501) and a second filter frame (701) are respectively slidable in the installation frame (5) and the limit frames (7), wherein a plurality of springs (8) are fixed to the inner cavity side wall of one side limit frame (7), and a plug hole (402) is opened on the side wall of the filter box (1), a push rod (401) is slidable in the plug hole (402), and a push plate (4) is fixed to one end of the push rod (401), and the filter A mounting plate (302) is fixed on the housing (1), a motor 1 (3) is mounted on the side wall of the mounting plate (302), a cam (301) is mounted on the output shaft end of the motor 1 (3), a motor 2 (6) is fixed on the outside of the filter housing (1), a stirring shaft (601) is fixed on the output shaft end of the motor 2 (6), a stirring blade (602) is fixed on the side wall of the stirring shaft (601), and a scraper (604) and a dredging brush (605) are mounted on the side walls of the stirring blade (602).

2. The device for preliminary filtration and treatment of chemical wastewater for environmental pollution control according to claim 1 is characterized in that: A second positioning hole (503) is provided at the front end of one side of the first filter frame (501), a first positioning hole (502) is provided at one side of the installation frame (5), a fixing frame (9) is fixed to the top wall of the installation frame (5), a second spring (901) is fixedly connected to the top wall of the inner cavity of the fixing frame (9), a limiting plate (902) is fixed to the other end of the second spring (901), a limiting groove (903) is provided on the side wall of the fixing frame (9), and a limiting rod (904) is slidably connected in the limiting groove (903).

3. The device for preliminary filtration and treatment of chemical wastewater for environmental pollution control according to claim 2 is characterized in that: One end of the limiting rod (904) close to the limiting plate (902) is fixedly connected to the wall surface of the limiting plate (902), and the limiting groove (903) corresponds to the positioning hole (502).

4. The device for preliminary filtration and treatment of chemical wastewater for environmental pollution control according to claim 1 is characterized in that: Both ends of the bottom of the feed hopper (2) are movably connected to feed quantitative plates (202), and push plates (4) are fixedly connected to both sides of the inner cavity of the filter box (1) and located above the installation frame (5).

5. The device for preliminary filtration and treatment of chemical wastewater for environmental pollution control according to claim 4 is characterized in that: The extended ends of the two push plates (4) are in contact with the bottom wall surface of the feed quantitative plate (202).

6. The device for preliminary filtration and treatment of chemical wastewater for environmental pollution control according to claim 1 is characterized by: The apertures of the sieve holes on the second filter frame (701) decrease in sequence, and the spring 1 (8) and the side wall surface of the second filter frame (701) fit each other.

7. The device for preliminary filtration and treatment of chemical wastewater for environmental pollution control according to claim 1 is characterized by: The mounting plate (302) is an L-shaped structure, and the stirring blade (602) is an overall C-shaped structure.

Citation Information

Patent Citations

  • Wastewater multistage treatment device based on chemical product processing

    CN219044853U