Sewage filtering treatment equipment

Abstract

The invention provides sewage filtration treatment equipment, and relates to the technical field of sewage filtration. The sewage filtering treatment equipment comprises a first shell, a second shell, metal filter screens, a water outlet pipe and a water inlet pipe, the metal filter screens are arranged between the first shell and the second shell, the water inlet pipe is communicated with the first shell, the water outlet pipe is communicated with the second shell, and the sewage filtering treatment equipment has a closed state and a separated state; when the sewage filtering treatment equipment is in a closed state, the first shell, the plurality of metal filter screens and the second shell are sequentially abutted together, and when the sewage filtering treatment equipment is in a separated state, the first shell and the metal filter screens, the adjacent metal filter screens and the metal filter screens and the second shell are separated from each other. According to the metal filter screen cleaning device, all the metal filter screens can be subjected to cleaning work such as comprehensive flushing and brushing, and then the cleaning work of the metal filter screens is greatly simplified.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage filtration, and more particularly, to a sewage filtration and treatment device. Background Art

[0002] In the sewage treatment process, filtration is a crucial link, which directly affects whether the treated water quality meets the standards and the efficiency of subsequent treatment steps. Traditional sewage treatment filtration devices usually adopt a fixed filtration box (filtration cylinder) and an internal filter mesh structure.

[0003] However, in practical applications, most traditional sewage treatment filtration devices face a series of challenges. As the filtration process continues, the filter mesh will gradually become clogged, accumulating a large amount of dirt, resulting in a significant decrease in filtration efficiency. In order to maintain the normal operation of the device and the effluent water quality, the filter mesh must be cleaned regularly. Especially for devices with multiple layers of filter meshes, the problem is more prominent. Due to the compact space between each layer of filter meshes, it is difficult to clean each filter mesh comprehensively and effectively. This not only increases the cleaning difficulty but also may lead to a decline in device performance due to incomplete cleaning, and even affect the effluent water quality. Summary of the Invention

[0004] To solve the above problems, the present invention provides a sewage filtration and treatment device.

[0005] The present invention provides a sewage filtration and treatment device, including a first housing, a second housing, a metal filter mesh, an outlet pipe, and an inlet pipe. A plurality of the metal filter meshes are disposed between the first housing and the second housing. The inlet pipe is communicated with the first housing, and the outlet pipe is communicated with the second housing. The sewage filtration and treatment device has a closed state and a separated state. When the sewage filtration and treatment device is in the closed state, the first housing, the plurality of metal filter meshes, and the second housing are sequentially abutted together. When the sewage filtration and treatment device is in the separated state, the first housing and the metal filter mesh, adjacent metal filter meshes, and the metal filter mesh and the second housing are all separated from each other.

[0006] Optionally, the sewage filtration and treatment device further includes a folding and unfolding unit. The folding and unfolding unit is disposed between the first housing and the metal filter mesh, between adjacent metal filter meshes, and between the metal filter mesh and the second housing. The folding and unfolding unit can be bent or extended. When the folding and unfolding unit is bent, the sewage filtration and treatment device is in the closed state. When the folding and unfolding unit is extended, the sewage filtration and treatment device is in the separated state.

[0007] Optionally, the metal filter screen includes a frame body and a mesh body disposed on the frame body, and the aperture of the mesh body gradually decreases from the first housing to the second housing.

[0008] Optionally, the folding and unfolding unit includes a deformation rod and a hinge seat. First grooves are provided on the opposite end faces of the first housing and the frame body, the opposite end faces of adjacent frame bodies, and the opposite end faces of the frame body and the second housing. The deformation rod is accommodated in the first groove, and both ends of the deformation rod are respectively connected to the hinge seat. The hinge seat is connected to the corresponding end face of the first housing, the frame body end face, or the second housing. The deformation rod has a bent state and an extended state. When the sewage filtration and treatment device is in the closed state, the deformation rod is in the bent state, and when the sewage filtration and treatment device is in the separated state, the deformation rod is in the extended state.

[0009] Optionally, the deformation rod is made of a shape memory polymer material. When the deformation rod is heated, the deformation rod switches from the bent state to the extended state.

[0010] Optionally, a heat conduction unit is further included. The heat conduction unit is disposed on the corresponding end faces of the hinge seat, the first housing, the frame body end face, and the second housing. The heat conduction unit is connected to the corresponding hinge seat, and the heat conduction unit is used to heat the mesh body.

[0011] Optionally, the heat conduction unit includes a heat transfer rod and a heat conduction rod. Second grooves are provided on the end faces of the first housing, the frame body end face, and the second housing. The heat transfer rod is connected in the second groove, and the heat transfer rod is rotatably connected to the corresponding hinge seat. One end of the heat conduction rod is connected to the heat transfer rod, and the other end of the heat conduction rod is inserted into the mesh body.

[0012] Optionally, two groups of the heat conduction units are symmetrically arranged. Each group of the heat conduction units further includes a cleaning rod. The top of the cleaning rod is rotatably connected to the heat transfer rod. The bottom of the cleaning rod extends to the bottom side of the frame body, and the cleaning rod is located outside the mesh body. Arc-shaped water guiding surfaces and water blocking surfaces are provided on both side surfaces of the cleaning rod. An inlet part and an outlet part are formed between the arc-shaped water guiding surface and the water blocking surface. A plurality of rubber bristles are connected to the side surface of the cleaning rod facing the mesh body. An inlet cavity is provided in the rubber bristles. One end of the inlet cavity is an open structure and is communicated with the outlet part. A plurality of capillary spray holes communicated with the inlet cavity are further provided on the periphery of the rubber bristles.

[0013] Optionally, the sewage filtration and treatment device further includes a sealing ring, which is arranged on the opposite end faces of the first housing and the metal filter screen, the opposite end faces of adjacent metal filter screens, and the opposite end faces of the metal filter screen and the second housing.

[0014] Optionally, the sewage filtration and treatment device further includes a heating device, which is used to heat the deformation rod.

[0015] The beneficial effects of the sewage filtration and treatment device of the present invention are as follows: When the sewage filtration and treatment device is in the closed state, the first housing, multiple metal filter screens and the second housing are sequentially abutted together to form a closed filtration box body. After the sewage enters the filtration box body through the water inlet pipe, it is filtered through multiple metal filter screens, and after the sewage is filtered, it is discharged through the water outlet pipe. When the sewage filtration and treatment device is in the separated state, the first housing is separated from the metal filter screen, adjacent metal filter screens, and the metal filter screen and the second housing, so that there is a certain distance between the first housing and the metal filter screen, adjacent metal filter screens, and the metal filter screen and the second housing. Furthermore, each metal filter screen can be comprehensively washed, scrubbed and other cleaning work can be carried out through the distance, which greatly simplifies the cleaning work of the metal filter screen. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of the sewage filtration and treatment device according to the embodiment of the present invention; Figure 2 is a schematic diagram of the sewage filtration and treatment device according to the embodiment of the present invention when it is in the closed state; Figure 3 is a schematic structural diagram of the folding and unfolding unit in the sewage filtration and treatment device according to the embodiment of the present invention; Figure 4 is Figure 2 an enlarged view of the structure at A in Figure 5 is a schematic structural diagram of the heat conduction unit in the sewage filtration and treatment device according to the embodiment of the present invention; Figure 6 is a schematic diagram of the sewage filtration and treatment device according to the embodiment of the present invention when it is in the separated state; Figure 7 is Figure 6 an enlarged view of the structure at B in Figure 8 is a schematic diagram of the sewage filtration and treatment device according to the embodiment of the present invention when the cleaning rod is close to the horizontal position; Figure 9 is a partial structural diagram of the cleaning rod in the sewage filtration and treatment device according to the embodiment of the present invention; Figure 10 is a partial cross-sectional view of the cleaning rod in the sewage filtration and treatment device according to the embodiment of the present invention.

[0017] Description of the reference numerals: 1. First housing; 2. Second housing; 3. Metal filter; 31. Mesh body; 32. Frame body; 321. First groove; 322. Second groove; 4. Water outlet pipe; 5. Water inlet pipe; 6. Folding and unfolding unit; 61. Deformable rod; 62. Hinge seat; 7. Heat conduction unit; 71. Heat transfer rod; 72. Heat conduction rod; 73. Cleaning rod; 731. Arc-shaped water guiding surface; 732. Water inlet part; 733. Water outlet part; 734. Water blocking surface; 735. Rubber brush bristles; 7351. Capillary spray holes; 7352. Water inlet cavity; 8. Sealing ring. Detailed implementation manners

[0018] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following will describe the specific embodiments of the present invention in detail with reference to the accompanying drawings.

[0019] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0020] In the description of this specification, the descriptions with reference to the terms "embodiment", "one embodiment", "some implementation manners", "exemplarily" and "one implementation manner" etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or implementation manner are included in at least one embodiment or implementation manner of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or implementation manner. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or implementation manners in a suitable manner.

[0021] The terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features.

[0022] In the attached drawings, the Z-axis represents the vertical direction, that is, the up-and-down position, and the positive direction of the Z-axis represents up, while the negative direction of the Z-axis represents down; the X-axis in the attached drawings represents the horizontal direction and is specified as the left-and-right position, and the positive direction of the X-axis represents the right side, and the negative direction of the X-axis represents the left side; the Y-axis in the attached drawings represents the front-and-back position, and the positive direction of the Y-axis represents the front side, and the negative direction of the Y-axis represents the back side. It should be noted that the above meanings represented by the Z-axis, Y-axis and X-axis are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it should not be construed as a limitation to the present invention.

[0023] An embodiment of the present invention provides a sewage filtration and treatment device, including a first housing 1, a second housing 2, a metal filter screen 3, a water outlet pipe 4 and a water inlet pipe 5. A plurality of metal filter screens 3 are arranged between the first housing 1 and the second housing 2. The water inlet pipe 5 is communicated with the first housing 1, and the water outlet pipe 4 is communicated with the second housing 2. The sewage filtration and treatment device has a closed state and a separated state. When the sewage filtration and treatment device is in the closed state, the first housing 1, a plurality of metal filter screens 3 and the second housing 2 are sequentially abutted together. When the sewage filtration and treatment device is in the separated state, the first housing 1 and the metal filter screen 3, adjacent metal filter screens 3, and the metal filter screen 3 and the second housing 2 are all separated from each other.

[0024] Specifically, the first housing 1 and the second housing 2 may be rectangular housing structures with one side open. Figure 1 In this case, the left side of the first housing 1 and the right side of the second housing 2 are open. The left side of the first housing 1 is abutted against the corresponding metal filter screen 3, and the right side of the second housing 2 is abutted against the corresponding metal filter screen 3. One end of the water inlet pipe 5 is communicated with the first housing 1, and the other end of the water inlet pipe 5 is connected to the sewage source, so that sewage can be discharged from the first housing 1 into a plurality of metal filter screens 3. The water outlet pipe 4 is communicated with the lower edge of the second housing 2. After the sewage is filtered by a plurality of metal filter screens 3, it is discharged from the water outlet pipe 4.

[0025] In this optional embodiment, when the sewage filtration and treatment device is in the closed state, the first housing 1, a plurality of metal filter screens 3 and the second housing 2 are sequentially abutted together to form a closed filtration box. After the sewage enters the filtration box through the water inlet pipe 5, it is filtered by a plurality of metal filter screens 3, and the filtered sewage is discharged through the water outlet pipe 4. When the sewage filtration and treatment device is in the separated state, the first housing 1 and the metal filter screen 3, adjacent metal filter screens 3, and the metal filter screen 3 and the second housing 2 are all separated from each other, so that there is a certain distance between the first housing 1 and the metal filter screen 3, adjacent metal filter screens 3, and the metal filter screen 3 and the second housing 2. Furthermore, each metal filter screen 3 can be comprehensively washed, brushed and other cleaning work through the distance, which greatly simplifies the cleaning work of the metal filter screen 3.

[0026] Optionally, the sewage filtration treatment device further includes a folding and unfolding unit 6, which is disposed between the first housing 1 and the metal filter screen 3, between adjacent metal filter screens 3, and between the metal filter screen 3 and the second housing 2. The folding and unfolding unit 6 can be bent or extended. When the folding and unfolding unit 6 is bent, the sewage filtration treatment device is in a closed state. When the folding and unfolding unit 6 is extended, the sewage filtration treatment device is in a separated state.

[0027] In this optional embodiment, combined with Figure 2 and Figure 6 as shown, when the folding and unfolding unit 6 is bent, the sewage filtration treatment device is in a closed state, so as to filter the sewage through multiple metal filter screens 3. When the folding and unfolding unit 6 is extended, the sewage filtration treatment device is in a separated state, so as to clean the multiple metal filter screens 3.

[0028] Furthermore, the metal filter screen 3 includes a frame body 32 and a mesh body 31 disposed on the frame body 32. The aperture of the mesh body 31 gradually becomes smaller from the first housing 1 to the second housing 2.

[0029] In this optional embodiment, combined with Figure 1 as shown, the metal filter screen 3 can be in a rectangular structure. By making the aperture of the mesh body 31 gradually become smaller from the first housing 1 to the second housing 2, the layered filtration of the sewage is realized.

[0030] It should be noted that multiple folding and unfolding units 6 can be disposed between the first housing 1 and the metal filter screen 3, between adjacent metal filter screens 3, and between the metal filter screen 3 and the second housing 2 along the extending direction of the frame body 32. Combined with Figure 5 as shown, in this optional embodiment, four folding and unfolding units 6 can be provided, with two provided on the upper side and the lower side of the frame body 32 respectively. When the sewage filtration treatment device is in a closed state, the tensile force between the first housing 1 and the metal filter screen 3, between adjacent metal filter screens 3, and between the metal filter screen 3 and the second housing 2 is increased, thereby improving the sealing performance when the first housing 1, multiple metal filter screens 3 and the second housing 2 are in contact with each other. In other optional embodiments, one folding and unfolding unit 6 can also be provided on each of the upper side, lower side, left side and right side of the frame body 32, making the tensile force between the first housing 1 and the metal filter screen 3, between adjacent metal filter screens 3, and between the metal filter screen 3 and the second housing 2 more uniform, and further improving the sealing performance when the first housing 1, multiple metal filter screens 3 and the second housing 2 are in contact with each other.

[0031] Optionally, the folding unit 6 includes a deformable rod 61 and a hinge seat 62. The relative end faces of the first shell 1 and the frame 32, the relative end faces of the adjacent frame 32, and the relative end faces of the frame 32 and the second shell 2 are provided with a first groove 321. The deformable rod 61 is accommodated in the first groove 321. The two ends of the deformable rod 61 are respectively connected to the hinge seat 62. The hinge seat 62 is connected to the corresponding end face of the first shell 1 or the end face of the frame 32 or the second shell 2. The deformable rod 61 has a bending state and an extended state. When the sewage filtering and treatment equipment is in a closed state, the deformable rod 61 is in a bent state. When the sewage filtering and treatment equipment is in a separated state, the deformable rod 61 is in an extended state.

[0032] Furthermore, the deformable rod 61 is made of a shape memory polymer material, and when the deformable rod 61 is heated, the deformable rod 61 switches from a bent state to an extended state.

[0033] In this optional embodiment, the deformable rod 61 of the shape memory polymer material can be selected from epoxy or cyanate shape memory polymer composite materials. The glass transition temperature of the epoxy polymer material can be modified in the range of 80 to 180°C; and the glass transition temperature of the cyanate polymer can be modified in the range of 180 to 200°C. At room temperature, the deformable rod 61 is in a bent state, such as a U-shape. When the deformable rod 61 is heated and the temperature exceeds its glass transition temperature, the deformable rod 61 unfolds into an "I" shape, thereby supporting the relative end faces of the first shell 1 and the metal filter 3, the relative end faces of the adjacent metal filter 3, and the relative end faces of the metal filter 3 and the second shell 2.

[0034] Optionally, the sewage filtration treatment equipment also includes a heat conduction unit 7, which is arranged between the hinge seat 62 and the corresponding end face of the first shell 1, the end face of the frame 32 and the end face of the second shell 2, and the heat conduction unit 7 is connected to the corresponding hinge seat 62, and the heat conduction unit 7 is used to heat the mesh body 31.

[0035] Furthermore, the heat conducting unit 7 includes a heat transfer rod 71 and a heat conduction rod 72. The end surfaces of the first shell 1, the frame body 32 and the second shell 2 are all provided with a second groove 322. The heat transfer rod 71 is connected to the second groove 322. The heat transfer rod 71 is rotatably connected to the corresponding hinge seat 62. One end of the heat conduction rod 72 is connected to the heat transfer rod 71, and the other end of the heat conduction rod 72 is inserted into the mesh body 31.

[0036] In this optional embodiment, combined with Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, when the deformation rod 61 is heated to separate the adjacent metal filter meshes 3, the heat on the deformation rod 61 will be transferred to the heat transfer rod 71 through the hinge seat 62, then transferred to the heat conduction rod 72 through the heat transfer rod 71, and finally the heat is transferred to the mesh body 31 through the heat conduction rod 72, so as to realize a certain degree of heating of the mesh body 31, accelerate the decomposition and shedding of dirt, and thus when the metal filter meshes 3 are completely separated, it is easier to wash the dirt off the mesh body 31.

[0037] It should be explained that for the convenience of understanding, in Figure 5 , the upper side of the frame body 32 is drawn in a separated state to show the position of the heat transfer rod 71.

[0038] It should be noted that dirt is usually a mixture composed of various substances, including organic matter, inorganic salts, microorganisms, etc. After these substances are deposited on the surface of the metal filter meshes 3, a scale layer that is difficult to remove will be formed. Therefore, appropriate heating can increase the thermal motion speed of dirt molecules, making it easier to fall off from the surface of the mesh body 31. Heating can also accelerate certain chemical reactions, such as oxidation, hydrolysis, etc. These reactions help to decompose the insoluble substances in the dirt and convert them into a form that is easier to remove.

[0039] Optionally, two groups of heat conduction units 7 are symmetrically arranged. Each group of heat conduction units 7 further includes a cleaning rod 73. The top of the cleaning rod 73 is rotatably connected to the heat transfer rod 71. The bottom of the cleaning rod 73 extends to the bottom side of the frame body 32, and the cleaning rod 73 is located outside the mesh body 31. Arc-shaped water guide surfaces 731 and water blocking surfaces 734 are provided on both side surfaces of the cleaning rod 73. An inlet part 732 and an outlet part 733 are formed between the arc-shaped water guide surface 731 and the water blocking surface 734. A plurality of rubber bristles 735 are connected to the side surface of the cleaning rod 73 facing the mesh body 31. An inlet cavity 7352 is provided in the rubber bristles 735. One end of the inlet cavity 7352 is of an open structure and communicates with the outlet part 733. A plurality of capillary spray holes 7351 communicating with the inlet cavity 7352 are further provided on the periphery of the rubber bristles 735.

[0040] In this optional embodiment, in combination with Figure 5 、 Figure 8 、 Figure 9 And Figure 10 As shown, when the adjacent metal filter meshes 3 are separated, while rinsing the mesh body 31 through the nozzle, the inclination angle of the nozzle is changed from time to time, so that the water outlet of the nozzle faces the side surface of the cleaning rod 73, so that part of the water flow alternately impacts the side surfaces of the two cleaning rods 73. After the cleaning rod 73 is impacted to a position close to the horizontal, the water flow is stopped, and the cleaning rod 73 makes a pendulum motion by its own gravity, so that the rubber bristles 735 extend into the mesh holes of the mesh body 31 for brushing, as Figure 8As shown in the figure, the sweeping area of ​​the left cleaning rod 73 on the mesh body 31 is area S1, the sweeping area of ​​the right cleaning rod 73 on the mesh body 31 is area S2, and the area where area S1 and area S2 overlap is area S3, that is, no matter whether it impacts the left cleaning rod 73 or the right cleaning rod 73, it can sweep the S3 area. In other words, impacting the left cleaning rod 73 once and impacting the right cleaning rod 73 once can sweep the S3 area twice, and it happens that the S3 area occupies a larger area of ​​the mesh body 31, thereby improving the cleaning efficiency of the mesh body 31. At the same time, when the water flow impacts the side of the cleaning rod 73, the arc guide The water surface 731 can gather the impacting water flow and reduce unnecessary splashing of the water flow, thereby increasing the impact force of the water flow on the cleaning rod 73, making it easier to impact the cleaning rod 73 to a nearly horizontal position, so that in the process of flushing the net body 31, part of the water flow can also pass through the water inlet part 732 into the water outlet part 733, and then flow into the water inlet cavity 7352 of the rubber bristles 735. Since the rubber bristles 735 will extend into the mesh of the net body 31 when brushing, the water flow will eventually pass through multiple capillary spray holes 7351 to impact in all directions of the mesh of the net body 31, thereby improving the cleaning effect of the dirt in the mesh of the net body 31.

[0041] Furthermore, the sewage filtering and treatment equipment also includes a sealing ring 8, which is arranged on the opposite end faces of the first shell 1 and the metal filter 3, the opposite end faces of adjacent metal filters 3, and the opposite end faces of the metal filter 3 and the second shell 2.

[0042] In this optional embodiment, combined with Figure 4 and Figure 7 As shown, the sealing ring 8 is disposed in the sealing grooves formed between the opposite end faces of the first housing 1 and the frame 32, the opposite end faces of the adjacent frame 32, and the opposite end faces of the frame 32 and the second housing 2. Figure 4 As shown, the sealing ring 8 is located in two corresponding sealing grooves, so as to achieve sealing between the opposite end faces of the first housing 1 and the metal filter 3, the opposite end faces of adjacent metal filter 3, and the opposite end faces of the metal filter 3 and the second housing 2, so as to prevent sewage from leaking out. Figure 7 As shown, when the first housing 1 and the metal filter 3, the adjacent metal filter 3, and the metal filter 3 and the second housing 2 are separated, the sealing ring 8 is located in one of the sealing grooves.

[0043] Optionally, the sewage filtering and treating equipment further comprises a heating device, and the heating device is used to heat the deformable rod 61 .

[0044] In this optional embodiment, combined with Figure 3 As shown, the heating device can be electrically heated, and the current generates heat through the resistor, thereby heating the deformable rod 61. Specifically, an electric heating film can be attached to the surface of the deformable rod 61 to achieve the heating effect.

[0045] Although the present invention is disclosed as above, the scope of protection of the present invention is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will all fall within the scope of protection of the present invention.

Claims

1. A sewage filtration treatment equipment, characterized in that: The sewage filtering treatment device comprises a first shell (1), a second shell (2), a metal filter screen (3), a water outlet pipe (4) and a water inlet pipe (5); a plurality of the metal filter screens (3) are arranged between the first shell (1) and the second shell (2); the water inlet pipe (5) is connected to the first shell (1); and the water outlet pipe (4) is connected to the second shell (2); the sewage filtering treatment device has a closed state and a separated state; when the sewage filtering treatment device is in the closed state, the first shell (1), the plurality of the metal filter screens (3) and the second shell (2) are abutted together in sequence; when the sewage filtering treatment device is in the separated state, the first shell (1) and the metal filter screens (3), adjacent metal filter screens (3) and the metal filter screens (3) and the second shell (2) are separated from each other.

2. The sewage filtration treatment equipment according to claim 1, characterized in that: The device further comprises a folding unit (6), wherein the folding unit (6) is arranged between the first shell (1) and the metal filter screen (3), between adjacent metal filter screens (3), and between the metal filter screen (3) and the second shell (2); the folding unit (6) is capable of bending or stretching; when the folding unit (6) is bent, the sewage filtering treatment device is in a closed state; when the folding unit (6) is stretched, the sewage filtering treatment device is in a separated state.

3. The sewage filtration treatment equipment according to claim 2, characterized in that: The metal filter (3) comprises a frame (32) and a mesh (31) arranged on the frame (32); the aperture of the mesh (31) gradually decreases from the first shell (1) to the second shell (2).

4. The sewage filtration treatment equipment according to claim 3, characterized in that: The folding and unfolding unit (6) comprises a deformable rod (61) and an articulated seat (62); the opposite end faces of the first shell (1) and the frame (32), the opposite end faces of the adjacent frame (32), and the opposite end faces of the frame (32) and the second shell (2) are provided with a first groove (321); the deformable rod (61) is accommodated in the first groove (321); the two ends of the deformable rod (61) are respectively connected to the articulated seat (62); the articulated seat (62) is connected to the corresponding end face of the first shell (1) or the end face of the frame (32) or the second shell (2); the deformable rod (61) has a bent state and an extended state; when the sewage filtering and treating device is in the closed state, the deformable rod (61) is in a bent state; when the sewage filtering and treating device is in the separated state, the deformable rod (61) is in an extended state.

5. The sewage filtration treatment equipment according to claim 4, characterized in that: The deformable rod (61) is made of a shape memory polymer material, and when the deformable rod (61) is heated, the deformable rod (61) switches from the bent state to the extended state.

6. The sewage filtration treatment equipment according to claim 5, characterized in that: It also includes a heat conduction unit (7), which is arranged on the hinge seat (62) and the corresponding end surface of the first shell (1), the end surface of the frame (32) and the end surface of the second shell (2), and the heat conduction unit (7) is connected to the corresponding hinge seat (62). The heat conduction unit (7) is used to heat the mesh body (31).

7. The sewage filtration treatment equipment according to claim 6, characterized in that: The heat conduction unit (7) comprises a heat transfer rod (71) and a heat conduction rod (72); the end surface of the first shell (1), the end surface of the frame (32) and the end surface of the second shell (2) are all provided with a second groove (322); the heat transfer rod (71) is connected to the second groove (322); the heat transfer rod (71) is rotatably connected to the corresponding hinge seat (62); one end of the heat conduction rod (72) is connected to the heat transfer rod (71), and the other end of the heat conduction rod (72) is inserted into the mesh body (31).

8. The sewage filtration treatment equipment according to claim 7, characterized in that: The heat transfer units (7) are symmetrically arranged in two groups, each group of the heat transfer units (7) further comprising a cleaning rod (73), the top of the cleaning rod (73) being rotatably connected to the heat transfer rod (71), the bottom of the cleaning rod (73) extending to the bottom side of the frame (32), and the cleaning rod (73) being located outside the net body (31), and both side surfaces of the cleaning rod (73) being provided with an arc-shaped water-guiding surface (731) and a water-blocking surface (734), the arc-shaped water-guiding surface (731) and the water-blocking surface (734) being connected to each other. A water inlet (732) and a water outlet (733) are formed between the water surface (734); a plurality of rubber bristles (735) are connected to a side of the cleaning rod (73) facing the net body (31); a water inlet cavity (7352) is provided in the rubber bristles (735); one end of the water inlet cavity (7352) is an open structure and is connected to the water outlet (733); and a plurality of capillary spray holes (7351) connected to the water inlet cavity (7352) are also provided around the rubber bristles (735).

9. The sewage filtration treatment equipment according to claim 1, characterized in that: It also comprises a sealing ring (8), the sealing ring (8) being arranged on the opposite end faces of the first shell (1) and the metal filter (3), the opposite end faces of the adjacent metal filter (3), and the opposite end faces of the metal filter (3) and the second shell (2).

10. The sewage filtration treatment equipment according to claim 4, characterized in that: It also comprises a heating device, wherein the heating device is used to heat the deformable rod (61).

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