Wastewater treatment device with wastewater recycling function

Abstract

The invention provides a wastewater treatment device with a wastewater recycling function, and belongs to the technical field of wastewater treatment. The device comprises a base, a filtering mechanism and a driving mechanism, the filtering mechanism realizes bidirectional graded filtering through an upper filtering cavity, a lower filtering cavity and a U-shaped connecting pipe, a coarse filtering plate, a middle filtering plate and a fine filtering plate sequentially intercept pollutants with different particle sizes, and it is ensured that outlet water meets the recycling standard. The filter box adopts a modular cylinder splicing design and is quickly assembled through a bolt and a slot, and a protective door is convenient to maintain. The driving mechanism pushes the impeller through water flow to drive the filter plate to rotate, filter holes are automatically cleaned, and the servo motor assists in guaranteeing the cleaning effect. The problems that a traditional device is low in filtering efficiency, a filter screen is prone to being blocked and maintenance is complex are solved, the device has the advantages of efficient filtering, automatic cleaning and modular design, the device is suitable for industrial, agricultural and municipal wastewater treatment, and the water quality stability and the operation efficiency are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of wastewater treatment, and particularly to a wastewater treatment device with the function of wastewater reuse. Background Art

[0002] With the improvement of environmental protection requirements and the intensification of water resource shortage problems, wastewater treatment and reuse technologies have been widely applied in industrial, agricultural, and municipal fields. Traditional wastewater treatment devices usually integrate multiple functional modules such as mixing reaction and filtration separation, aiming to preliminarily purify wastewater through physical filtration and chemical agent reaction to achieve water quality compliance and partial reuse. For example, the Chinese utility model patent with the application number 202321420216.4 discloses a wastewater treatment device with the function of wastewater reuse. The device effectively improves the mixing efficiency of chemical agents and wastewater by setting up a treatment mechanism composed of a stirring rod, a motor, a high-pressure air pipe, and a medicine pipe, and cooperates with a filter support and an end filter to perform two-stage physical filtration on the treated wastewater. The overall structure is compact and the operation is convenient, having certain practical value.

[0003] However, there are still certain technical defects in the actual use of this device. Its filtration system only adopts a single-stage filtration structure, lacking a hierarchical treatment mechanism for coarse filtration and fine filtration, and it is difficult to meet the requirements of stratified interception of various types of pollutants or high-concentration wastewater, affecting the filtration efficiency and water quality stability; at the same time, the device is not equipped with an automatic cleaning function, and the filter screen is prone to clogging due to the accumulation of suspended impurities during use. Users need to frequently manually disassemble and replace the filter components, increasing the maintenance workload and reducing the continuous operation ability and on-site adaptability of the device. Therefore, it is still necessary to further optimize the filtration structure and cleaning mechanism to improve the stability, automation level, and reuse effect of wastewater treatment. Summary of the Invention

[0004] The purpose of this part is to outline some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part, as well as in the abstract and title of the present application, to avoid obscuring the purpose of this part, the abstract, and the title. However, such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In view of the above and / or problems existing in the prior art, the present invention is proposed.

[0006] Therefore, the technical problems to be solved by the present invention are: to improve the efficiency and accuracy of wastewater filtration, and to achieve automatic cleaning or convenient maintenance of the filter components, so as to improve the stability and continuous treatment ability of wastewater reuse.

[0007] To solve the above technical problems, the present invention provides the following technical solutions:

[0008] A wastewater treatment device with wastewater reuse function, comprising a base, a filtering mechanism and a driving mechanism, wherein:

[0009] The base includes a support plate, and an installation frame is fixedly installed in the middle of the support plate;

[0010] The filtering mechanism includes a filtering box movably arranged directly above the support plate. An upper filtering cavity and a lower filtering cavity are formed inside the filtering box, and the upper filtering cavity and the lower filtering cavity are completely separated by a partition. A U-shaped connecting pipe is fixedly installed at the right end of the filtering box, and the upper filtering cavity is communicated with the lower filtering cavity through the U-shaped connecting pipe. A coarse filter plate, a medium filter plate and a fine filter plate are arranged equidistantly from left to right inside the filtering box. An inlet pipe and a drain pipe are respectively arranged on the upper side and the lower side on the left side of the filtering box, and the inlet pipe is communicated with the upper filtering cavity, and the drain pipe is communicated with the lower filtering cavity;

[0011] The driving mechanism includes a servo motor fixedly installed at the right end of the installation frame. The output end of the servo motor is in transmission connection with a rotating shaft through a coupling. The left end of the rotating shaft penetrates through the installation frame and extends into the drain pipe to be fixedly connected with an impeller, and three gears are fixedly installed on the outer surface of the rotating shaft.

[0012] As a preferred scheme of the wastewater treatment device with wastewater reuse function of the present invention, wherein: the filtering box includes a first single-end closed cylinder, a first double-end open cylinder, a second double-end open cylinder and a second single-end closed cylinder.

[0013] As a preferred scheme of the wastewater treatment device with wastewater reuse function of the present invention, wherein: the whole filtering box is sequentially spliced and composed of a first single-end closed cylinder, a coarse filter plate, a first double-end open cylinder, a medium filter plate, a second double-end open cylinder, a fine filter plate and a second single-end closed cylinder from left to right.

[0014] As a preferred scheme of the wastewater treatment device with wastewater reuse function of the present invention, wherein: through holes are formed at the centers of the coarse filter plate, the medium filter plate and the fine filter plate; a first plug is fixedly installed at the center of the right side surface of the first single-end closed cylinder, and a first slot adapted to the first plug is formed at the center of the left side surface of the first double-end open cylinder, and a second plug is fixedly installed at the center of its right side surface; a second slot adapted to the second plug is formed at the center of the left side surface of the second double-end open cylinder, and a third plug is fixedly installed at the center of its right side surface; a third slot adapted to the third plug is formed at the center of the left side surface of the second single-end closed cylinder; through the plugging cooperation of the three plugs and the three slots, the splicing and fixing of the filtering box are realized.

[0015] As a preferred embodiment of the wastewater treatment device with wastewater reuse function according to the present invention, wherein: protective doors are hinged on both the upper and lower sides of the front surfaces of the first single-end closed cylinder, the second single-end closed cylinder, the first double-end open cylinder, and the second double-end open cylinder, and door handles are fixedly installed on the front surfaces of the four groups of protective doors.

[0016] As a preferred embodiment of the wastewater treatment device with wastewater reuse function according to the present invention, wherein: the coarse filter plate, the medium filter plate, and the fine filter plate are all rotatably connected to the outer surfaces of the first plug pin, the second plug pin, and the third plug pin through through holes, and the coarse filter plate, the medium filter plate, and the fine filter plate are respectively rotatably connected to the outer walls of the first single-end closed cylinder, the second single-end closed cylinder, the first double-end open cylinder, and the second double-end open cylinder through balls.

[0017] As a preferred embodiment of the wastewater treatment device with wastewater reuse function according to the present invention, wherein: annular teeth are fixedly installed on the outer surfaces of the coarse filter plate, the medium filter plate, and the fine filter plate, and the three groups of annular teeth are respectively meshed with the three gears.

[0018] As a preferred embodiment of the wastewater treatment device with wastewater reuse function according to the present invention, wherein: a rotating cavity is formed inside the drain pipe, and the impeller is rotatably connected to the rotating cavity through a rotating shaft.

[0019] The beneficial effects of the present invention:

[0020] (1) By arranging a coarse filter plate, a medium filter plate, and a fine filter plate in the filter box, adopting a double-chamber design of an upper filter chamber and a lower filter chamber, and combining with the communication structure of the U-shaped connecting pipe, the present invention realizes multi-stage filtration and two-way fine filtration of wastewater. The coarse filter plate effectively intercepts large-particle impurities, the medium filter plate removes fine particles, and the fine filter plate conducts in-depth filtration to ensure that the water quality of the effluent meets the reuse standards such as industrial circulation and agricultural irrigation. After the wastewater completes the initial classification filtration in the upper filter chamber, it enters the lower filter chamber through the U-shaped connecting pipe for reverse fine filtration, further improving the water quality stability. Compared with the traditional single-stage filtration device, the present invention significantly improves the filtration efficiency and the water quality of the effluent, solves the problems that the filtration system in the background technology is difficult to cope with multiple types of pollutants and the water quality is unstable, and provides a reliable guarantee for wastewater reuse.

[0021] (2) Through the innovative design of the driving mechanism, combined with the meshing connection of the impeller, rotating shaft, gear and the annular teeth of the filter plate, the automatic rotation and cleaning function of the filter plate is realized. When the wastewater flows through the drain pipe, it pushes the impeller to rotate, driving the rotating shaft and gear, causing the coarse filter plate, medium filter plate and fine filter plate to rotate continuously. The filter holes are flushed by the reverse water flow in the lower filter chamber, effectively removing blockages, and solving the defects of the filter net being easily blocked and requiring frequent manual disassembly in the background technology. In addition, when the water flow power is insufficient, the servo motor provides auxiliary power to ensure the stability of the filter plate rotation and cleaning effect. This automatic cleaning mechanism without an additional power source significantly reduces the maintenance workload and operating costs. At the same time, the modular cylindrical splicing design facilitates the replacement and inspection of the filter plate, further improving the on-site adaptability and long-term operating efficiency of the device.

[0022] (3) The filter box of the present invention adopts a modular splicing structure of the first single-end closed cylinder, the first double-end open cylinder, the second double-end open cylinder and the second single-end closed cylinder. Through the precise cooperation of the plug and the slot, rapid assembly and disassembly are realized, enhancing the flexibility and maintenance convenience of the device. The rotational connection design of the ball reduces the rotation resistance of the filter plate and extends the service life of the components, adapting to high-load operating environments. Compared with the fixed structure of traditional wastewater treatment devices, the modular design of the present invention not only facilitates the adjustment of the filter plate configuration according to different wastewater types, but also can adapt to various application scenarios such as industry, agriculture, and municipal administration, significantly improving the versatility and market competitiveness of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. Among them:

[0024] Figure 1 is a three-dimensional view of the overall structure of the present invention;

[0025] Figure 2 is a three-dimensional front cross-sectional view of the overall structure of the present invention;

[0026] Figure 3 is a side cross-sectional view of the present invention;

[0027] Figure 4 is a three-dimensional view of the connection state of the driving mechanism and the filter plate of the present invention;

[0028] Figure 5 is a three-dimensional exploded view of the first double-end open cylinder, the second double-end open cylinder and the medium filter plate of the present invention;

[0029] Figure 6This is a perspective view of the first single-end closed cylinder of the present invention;

[0030] Figure 7 This is a perspective view of the second single-end closed cylinder of the present invention. Detailed implementation manners

[0031] To make the above objects, features, and advantages of the present invention more apparent and understandable, the following detailed description of the specific implementation manners of the present invention will be given in conjunction with the accompanying drawings of the specification.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar generalizations without departing from the spirit of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0033] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation manner of the present invention. The phrase "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0034] Embodiment

[0035] Referring to Figures 1 to 7 , this is the first embodiment of the present invention. This embodiment provides a wastewater treatment device with a wastewater reuse function. Its structural design is reasonable, and it can efficiently achieve the hierarchical filtration, automatic cleaning, and recycling of wastewater, meeting the wastewater treatment requirements in the industrial, agricultural, and municipal fields. The device includes a base 100, a filtration mechanism 200, and a driving mechanism 300. Each part works together to ensure the high efficiency of wastewater treatment and the stability of the effluent water quality.

[0036] Specifically, the base 100 includes a support plate 101. The support plate 101 provides stable structural support for the entire device. An installation frame 102 is fixedly installed in the middle thereof. The installation frame 102 is used to fix the servo motor 301 of the driving mechanism 300, and its strong frame design ensures the stability of the device during operation, preventing vibration or displacement from affecting the filtration effect. The support plate 101 is made of high-strength metal material, having good load-bearing capacity and corrosion resistance, and adapting to the humid and chemically corrosive conditions in the wastewater treatment environment.

[0037] Furthermore, the filtration mechanism 200 is the core component of the device, including a filtration box 201 movably mounted directly above the support plate 101. The filtration box 201 is fixed to the support plate 101 by a detachable connection method, which is convenient for maintenance and replacement. The interior of the filtration box 201 is completely divided into an upper filtration chamber 202 and a lower filtration chamber 203 by a partition plate 204. The partition plate 204 is made of a corrosion-resistant polymer material to ensure that it will not deteriorate due to the chemical substances in the wastewater during long-term use. The upper filtration chamber 202 is used for primary filtration of wastewater, and the lower filtration chamber 203 is used for secondary fine filtration. The upper and lower chamber design optimizes the filtration path, extends the treatment time of wastewater, and thus improves the filtration efficiency. A U-shaped connecting pipe 205 is fixedly installed at the right end of the filtration box 201. The U-shaped connecting pipe 205 connects the upper filtration chamber 202 and the lower filtration chamber 203. The smooth inner wall design reduces the water flow resistance, ensures that the wastewater flows smoothly from the upper chamber to the lower chamber, and is also convenient for cleaning and maintenance.

[0038] It should be noted that a coarse filter plate 206, a medium filter plate 207, and a fine filter plate 208 are sequentially and equidistantly arranged inside the filtration box 201 from left to right. The three have filter holes with different pore sizes, which are used to intercept large particle impurities, fine particles, and trace pollutants in the wastewater in stages. The coarse filter plate 206 has a larger pore size and mainly intercepts larger suspended matters such as sediment and fibers to protect the subsequent filter plates from being blocked; the medium filter plate 207 has a moderate pore size and removes smaller particles and some organic matters; the fine filter plate 208 has the smallest pore size to achieve deep filtration and ensure that the effluent quality meets the industrial circulation or irrigation reuse standards. An inlet pipe 209 and a drain pipe 210 are respectively arranged on the upper side and the lower side of the left side of the filtration box 201. The inlet pipe 209 is connected to the upper filtration chamber 202 and is designed with a large diameter to adapt to the input of high-flow wastewater; the drain pipe 210 is connected to the lower filtration chamber 203, and a rotating chamber 210a is provided inside it to provide space for the rotation of the impeller 303, ensure smooth drainage, and support the operation of the drive mechanism.

[0039] It should be noted that the filtration tank 201 is composed of a first single-end closed cylinder 201a, a first double-end open cylinder 201b, a second double-end open cylinder 201c, and a second single-end closed cylinder 201d spliced together. The modular design facilitates assembly, disassembly, and maintenance. The first single-end closed cylinder 201a is located at the leftmost end of the filtration tank 201. Its closed left side prevents wastewater leakage, and its right side is connected to the subsequent components through the first pin 212 to enhance the structural stability. The first double-end open cylinder 201b and the second double-end open cylinder 201c are located in the middle and accommodate the medium filter plate 207 and the fine filter plate 208 respectively. Their open design facilitates the smooth passage of water flow and supports the rotary cleaning of the filter plates. The second single-end closed cylinder 201d is located at the rightmost end. Its closed right side prevents the treated wastewater from overflowing, and its left side is connected to the previous component through a slot. Through holes 211 are provided at the centers of the coarse filter plate 206, the medium filter plate 207, and the fine filter plate 208. The through holes 211 are used for the rotational connection of the filter plates and the pins. A first pin 212 is fixedly installed at the center of the right side of the first single-end closed cylinder 201a. A first slot 213 adapted to the first pin 212 is provided at the center of the left side of the first double-end open cylinder 201b, and a second pin 214 is fixedly installed at the center of its right side. A second slot 215 adapted to the second pin 214 is provided at the center of the left side of the second double-end open cylinder 201c, and a third pin 216 is fixedly installed at the center of its right side. A third slot 217 adapted to the third pin 216 is provided at the center of the left side of the second single-end closed cylinder 201d. Through the plugging and matching of three pins and three slots, the filtration tank 201 is quickly spliced and fixed. The pins and slots are processed with high precision to ensure a tight connection and good sealing performance, prevent wastewater leakage, and facilitate disassembly for replacing or cleaning the filter plates.

[0040] Furthermore, the upper and lower sides of the front surfaces of the first single-end closed cylinder 201a, the second single-end closed cylinder 201d, the first double-end open cylinder 201b and the second double-end open cylinder 201c are hinged with protective doors 218, and the front surfaces of the four sets of protective doors 218 are fixedly installed with door handles. The protective doors 218 are made of transparent corrosion-resistant materials, which are convenient for the staff to observe the status of the internal filter plates, and can be quickly opened and closed through the door handles, so that the staff can clean out the dirt inside the filter box 201. The coarse filter plate 206, the medium filter plate 207 and the fine filter plate 208 are all rotatably connected to the outer surfaces of the first latch 212, the second latch 214 and the third latch 216 through the through hole 211. The surface of the latch is smooth and wear-resistant, ensuring smooth rotation of the filter plate and reducing friction loss. The three filter plates are rotatably connected to the outer walls of the first single-end closed cylinder 201a, the second single-end closed cylinder 201d, the first double-end open cylinder 201b and the second double-end open cylinder 201c through the ball bearings 219. The ball bearings 219 are made of high-strength stainless steel to reduce the rotation resistance and extend the service life, ensuring the stability of the filter plates under high-load operation. The outer surfaces of the coarse filter plate 206, the medium filter plate 207 and the fine filter plate 208 are fixedly mounted with annular teeth 220. The three groups of annular teeth 220 are respectively meshed and connected with the three gears 304 of the driving mechanism 300. The annular teeth 220 are made of high-hardness alloy materials and form precise meshing with the gears 304 to transmit the rotational power and ensure the stable rotation of the filter plates.

[0041] Furthermore, the driving mechanism 300 includes a servo motor 301 fixedly mounted on the right end of the mounting frame 102. The servo motor 301 provides stable power through a high-efficiency motor design, and its output end is connected to a rotating shaft 302 through a coupling transmission, and the coupling ensures the efficiency and reliability of power transmission. The left end of the rotating shaft 302 penetrates the mounting frame 102 and extends to the rotating chamber 210a in the drain pipe 210, and is fixedly connected with an impeller 303. The impeller 303 adopts a streamlined blade design to optimize the driving force of the water flow, and at the same time, the kinetic energy of the water flow is converted into mechanical energy through the rotation in the rotating chamber 210a. Three gears 304 are fixedly mounted on the outer surface of the rotating shaft 302, and the gears 304 are meshed with the annular teeth 220 of the filter plate to transmit the rotational power and drive the filter plate to perform self-cleaning. The rotating chamber 210a of the drain pipe 210 provides sufficient rotation space for the impeller 303, and its smooth inner wall design reduces the water flow resistance and ensures the efficient operation of the impeller 303.

[0042] The working principle of this device is as follows: The staff discharges the sewage into the upper filtration chamber 202 through the water inlet pipe 209. The sewage successively passes through the coarse filter plate 206, the medium filter plate 207, and the fine filter plate 208 in the upper filtration chamber 202. The coarse filter plate 206 intercepts large particulate impurities, the medium filter plate 207 removes fine particles, and the fine filter plate 208 achieves deep filtration to ensure that the water quality after the initial filtration reaches a high standard. The filtered sewage flows from the upper filtration chamber 202 into the lower filtration chamber 203 through the U-shaped connecting pipe 205, and successively passes through the fine filter plate 208, the medium filter plate 207, and the coarse filter plate 206 again in the lower filtration chamber 203. The reverse filtration further improves the water quality to ensure that the effluent meets the reuse standards such as industrial circulation and agricultural irrigation. During the process of the sewage flowing through the drain pipe 210, it drives the impeller 303 to rotate. The impeller 303 drives three gears 304 to rotate through the rotating shaft 302. The gears 304 are engaged with the annular teeth 220 of the coarse filter plate 206, the medium filter plate 207, and the fine filter plate 208 to drive the filter plates to rotate. The rotation of the filter plates makes the filter holes rotate from the upper filtration chamber 202 to the lower filtration chamber 203, and the reverse flow of the sewage in the lower filtration chamber 203 is used to wash the filter holes, effectively removing the blockages, solving the problem that traditional filter nets are prone to blockage, and realizing the automatic cleaning function. At the same time, the continuous rotation of the filter plates does not require an additional power source and can be achieved by relying on the water flow to drive the impeller 303, which is energy-saving and efficient. When the water flow power is insufficient, the servo motor 301 starts and drives the gear 304 to rotate through the rotating shaft 302 to ensure the continuous rotation of the filter plates and guarantee the backwashing effect of the filter holes.

[0043] It is important to note that the construction and arrangement of the present application shown in multiple different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who refer to this disclosure should easily understand that many modifications are possible on the premise of substantially not deviating from the novel teachings and advantages of the subject matter described in this application (for example, the dimensions, scales, structures, shapes and proportions of various components, and parameter values (such as temperature, pressure, etc.), installation arrangements, use of materials, color, orientation changes, etc.). For example, an element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature, number or position of discrete elements can be changed or altered. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "means-plus-function" clause is intended to cover the structure that performs the recited function herein, and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions can be made in the design, operating conditions and arrangements of the exemplary embodiments without departing from the scope of the present invention. Therefore, the present invention is not limited to specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0044] In addition, to provide a concise description of the exemplary embodiments, all features of the actual embodiments may not be described (i.e., those features that are not relevant to the currently contemplated best mode of carrying out the present invention or those features that are not relevant to implementing the present invention).

[0045] It should be understood that in the development of any actual implementation, as in any engineering or design project, numerous specific implementation decisions may be made. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, without undue experimentation, such development efforts will be routine work in design, manufacturing, and production.

[0046] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention may be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A wastewater treatment device with the function of reusing wastewater, characterized in that: including, a base (100), including a support plate (101), with a mounting frame (102) fixedly installed in the middle of the support plate (101); a filtering mechanism (200), including a filtering box (201) movably arranged directly above the support plate (101), an upper filtering chamber (202) and a lower filtering chamber (203) being formed inside the filtering box (201), and the upper filtering chamber (202) and the lower filtering chamber (203) being completely separated by a partition plate (204), a U-shaped connecting pipe (205) being fixedly installed at the right end of the filtering box (201), and the upper filtering chamber (202) being communicated with the lower filtering chamber (203) through the U-shaped connecting pipe (205), a coarse filter plate (206), a medium filter plate (207) and a fine filter plate (208) being sequentially and equidistantly arranged in the filtering box (201) from left to right, a water inlet pipe (209) and a drain pipe (210) being respectively arranged on the upper side and the lower side of the left side of the filtering box (201), and the water inlet pipe (209) being communicated with the upper filtering chamber (202), and the drain pipe (210) being communicated with the lower filtering chamber (203); and, a driving mechanism (300), including a servo motor (301) fixedly installed at the right end of the mounting frame (102), the output end of the servo motor (301) being in transmission connection with a rotating shaft (302) through a coupling, the left end of the rotating shaft (302) penetrating through the mounting frame (102) and extending into the drain pipe (210) to be fixedly connected with an impeller (303), and three gears (304) being fixedly installed on the outer surface of the rotating shaft (302).

2. The wastewater treatment device with the function of reusing wastewater according to claim 1, characterized in that: The filtering box (201) includes a first single-end closed cylinder (201a), a first double-end open cylinder (201b), a second double-end open cylinder (201c) and a second single-end closed cylinder (201d).

3. The wastewater treatment device with the function of reusing wastewater according to claim 2, characterized in that: The whole filtering box (201) is sequentially spliced and composed of a first single-end closed cylinder (201a), a coarse filter plate (206), a first double-end open cylinder (201b), a medium filter plate (207), a second double-end open cylinder (201c), a fine filter plate (208) and a second single-end closed cylinder (201d) from left to right.

4. The wastewater treatment device with the function of reusing wastewater according to claim 3, characterized in that: The centers of the coarse filter plate (206), the medium filter plate (207) and the fine filter plate (208) are all provided with through holes (211); a first latch (212) is fixedly installed at the center of the right side of the first single-ended closed cylinder (201a); a first slot (213) adapted to the first latch (212) is opened at the center of the left side of the first double-ended open cylinder (201b); a second latch (214) is fixedly installed at the center of the right side; A second slot (215) adapted to the second latch pin (214) is provided at the center of the left side surface of the second double-ended open cylinder (201c), and a third latch pin (216) is fixedly installed at the center of the right side surface; a third slot (217) adapted to the third latch pin (216) is provided at the center of the left side surface of the second single-ended closed cylinder (201d); the filter box (201) is spliced and fixed by plugging and matching the three latch pins with the three slots.

5. The wastewater treatment device with the function of reusing wastewater according to claim 4, characterized in that: The first single-end closed cylinder (201a), the second single-end closed cylinder (201d), the first double-end open cylinder (201b) and the second double-end open cylinder (201c) are hinged with protective doors (218) on the upper and lower sides of the front surfaces, and door handles are fixedly installed on the front surfaces of the four groups of protective doors (218).

6. The wastewater treatment device with the function of reusing wastewater according to claim 5, characterized in that: The coarse filter plate (206), the medium filter plate (207) and the fine filter plate (208) are all rotatably connected to the outer surfaces of the first latch (212), the second latch (214) and the third latch (216) through the through hole (211), and the coarse filter plate (206), the medium filter plate (207) and the fine filter plate (208) are all rotatably connected to the outer walls of the first single-end closed cylinder (201a), the second single-end closed cylinder (201d), the first double-end open cylinder (201b) and the second double-end open cylinder (201c) through the ball bearing (219).

7. The wastewater treatment device with the function of reusing wastewater according to claim 6, wherein: Annular teeth (220) are fixedly mounted on the outer surfaces of the coarse filter plate (206), the medium filter plate (207) and the fine filter plate (208), and three groups of the annular teeth (220) are respectively meshed and connected with the three gears (304).

8. The wastewater treatment device with the function of reusing wastewater according to claim 7, characterized in that: A rotating chamber (210a) is provided inside the drainage pipe (210), and the impeller (303) is rotatably connected to the rotating chamber (210a) via a rotating shaft (302).

Images