Sewage purification equipment based on biological membrane combined process and purification method thereof

Abstract

The invention discloses sewage purification equipment based on a biological membrane combined process and a purification method thereof.The equipment comprises a main body unit, a cleaning unit, a water isolation unit and a vibration unit, the main body unit comprises a sewage purification box, a biological membrane layer fixedly connected with the interior of the sewage purification box, an activated carbon adsorption layer and a filtering layer; the cleaning unit is located in the sewage purification box and used for cleaning the filtering layer, the water isolation unit is arranged in the cleaning unit, fixedly connected with the inner top wall of the sewage purification box and used for isolating sewage and avoiding hindering cleaning of the cleaning unit, and the vibration unit is connected with the cleaning unit and the water isolation unit. According to the invention, when the scraping plate is used for scraping impurities, the sewage purification operation does not need to be interrupted, and the impurities are not easy to flow everywhere along with water flow when the impurities are scraped, so that the impurity cleaning effect can be improved, in addition, when the impurities are scraped to the impurity collecting box, the impurities can be ensured not to be attached to the scraping plate, and the impurity cleaning effect is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage purification, and in particular to sewage purification equipment and a purification method thereof based on a biofilm combination process. Background Art

[0002] In the field of sewage purification, traditional sewage purification equipment generally uses filter screens, biofilm layers and activated carbon adsorption layers for step-by-step purification. First, when sewage passes through the filter screen, the filter screen can effectively filter out large particles of impurities, providing a relatively clean water quality foundation for subsequent purification steps. However, since the large particles of impurities contained in sewage are often large in size and large in number, the filter screen is very prone to clogging during use, which not only reduces the purification efficiency, but may also cause damage to the equipment.

[0003] In order to solve the problem of filter clogging, the traditional approach is to interrupt the operation several times during purification and clean the filter manually or mechanically. Although this method can temporarily alleviate the problem of filter clogging, frequent interruptions will undoubtedly reduce the overall purification efficiency and increase operating costs.

[0004] In recent years, some advanced sewage purification equipment has begun to adopt a scraper design, which uses the scraper to scrape the impurities on the filter into the impurity collection box, thereby avoiding the problem of filter blockage and without interrupting the purification operation. However, this design still has some problems in practical application. Especially when the water flow is large, impurities tend to float in the water and flow everywhere with the water flow, which makes it difficult for the scraper to accurately scrape the impurities into the impurity collection box when scraping them, resulting in poor impurity cleaning effect. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a sewage purification device based on a biofilm combined process, mainly comprising:

[0007] A main unit, the main unit comprising a sewage purification tank, a biofilm layer fixedly connected to the interior of the sewage purification tank, an activated carbon adsorption layer and a filtration layer, wherein the biofilm layer is located between the activated carbon adsorption layer and the filtration layer;

[0008] A cleaning unit, the cleaning unit is located inside the sewage purification tank and is fixedly connected to the sewage purification tank, and is used to clean the filter layer;

[0009] A water-isolating unit, which is arranged inside the cleaning unit and fixedly connected to the top wall of the sewage purification tank, and is used to isolate sewage to avoid hindering cleaning by the cleaning unit;

[0010] A vibration unit is connected to the cleaning unit and the water-isolating unit.

[0011] As a preferred solution of the sewage purification equipment based on the biofilm combination process described in the present invention, a water inlet is arranged at the top center of the sewage purification tank, a water outlet is arranged at the front bottom of the sewage purification tank, a through groove is arranged on the upper side of one side of the sewage purification tank, and a cleaning port is arranged on the side of the sewage purification tank.

[0012] As a preferred solution of the sewage purification equipment based on the biofilm combination process described in the present invention, a transparent observation window is sealed on one side of the sewage purification tank.

[0013] As a preferred solution of the sewage purification equipment based on the biofilm combination process described in the present invention, the filter layer includes a conical filter located inside the sewage purification tank and an annular impurity receiving filter plate fixedly connected to the bottom of the surrounding side of the conical filter, an impurity discharge groove is provided on the annular impurity receiving filter plate, the outer ring of the annular impurity receiving filter plate is sealed and fixed to the sewage purification tank, and the annular impurity receiving filter plate corresponds to the transparent observation window.

[0014] As a preferred solution of the sewage purification equipment based on the biofilm combined process of the present invention, wherein: the cleaning unit includes an outer gear ring movably arranged inside the sewage purification tank, a connecting pipe fixedly connected to the top of the outer gear ring, a cleaning assembly fixedly connected to the bottom of one side of the outer gear ring, a driving gear meshingly connected to one side of the outer gear ring, an extension plate fixedly connected to the top of the sewage purification tank, and a driving motor fixedly connected to the top of the extension plate;

[0015] The central axis of the outer gear ring and the connecting pipe corresponds to the central axis of the water inlet, the top end of the connecting pipe is rotatably connected to the top wall of the sewage purification box through a bearing, the driving gear movably passes through the through slot, and the bottom output end of the driving motor movably passes through the extension plate and is fixedly connected to the center of the driving gear.

[0016] As a preferred solution of the sewage purification equipment based on the biofilm combined process of the present invention, wherein: the cleaning component is arranged close to the impurity discharge groove, and the cleaning component comprises a vertical rod fixedly connected to the bottom of the outer gear ring, a scraper fixedly connected to the bottom end of the vertical rod, and an impurity receiving box fixedly connected to the inside of the impurity discharge groove;

[0017] A groove is provided at the bottom end of the vertical rod, a movable groove connected to the groove is provided on the side of the vertical rod, the scraper is arranged near the edge of one side of the impurity discharge groove, the bottom of the scraper is movably fitted with the upper surface of the annular impurity receiving filter plate, the scraper is fixedly connected to the side facing the impurity discharge groove with a cover plate, and the cover plate is movably covered on the top of the impurity discharge groove;

[0018] One side of the impurity receiving box is fixedly connected to the inner wall of the sewage purification box, and the side where the impurity receiving box is connected to the sewage purification box is an open structure, and a sealing piece is adapted to be plugged in the opening, and the sealing piece includes a piston that is seal-adapted and plugged in the opening, and the piston slides out of the cleaning port on the side away from the impurity receiving box and is fixedly connected to a fixing plate, the fixing plate is detachably fixed to the outer side wall of the sewage purification box, and a handle is fixedly installed on the side of the fixing plate away from the piston.

[0019] As a preferred solution of the sewage purification equipment based on the biofilm combination process described in the present invention, wherein: the water-isolating unit includes a fixed tube movably arranged at the center of the outer gear ring, an annular groove is provided at the bottom end of the fixed tube, a plurality of evenly distributed first springs are fixedly connected to the top wall of the annular groove, a sealing cover is adapted to be inserted at the bottom end of the annular groove, the top end of the sealing cover is fixedly connected to the bottom end of the first spring, and the bottom end of the sealing cover is an inclined surface parallel to the side of the conical filter screen;

[0020] A force ring is fixedly sleeved on the outside of the sealing cover, and a notch is provided at the position corresponding to the force ring and the vertical rod, and the two opposite surfaces of the notch are both set as downward inclined slopes, and the two inclined surfaces are symmetrically arranged, and a force rod is movably arranged in the notch, and the top end of the force rod is fixedly connected to the bottom of the outer gear ring, and the bottom end of the force rod is set as an arc structure, and the arc of the bottom end of the force rod is movably fitted under the inclined surface, and the force rod is spaced apart from the fixed tube.

[0021] As a preferred solution of the sewage purification equipment based on the biofilm combination process described in the present invention, the vibration unit includes a vibration starting block fixedly connected to the outer side surface of the fixed pipe and a vibration rod slidably connected to the groove, the top of the vibration starting block is set as an inclined arc surface, and the side of the arc surface facing the force rod is the highest point, the top of the vibration rod is fixedly connected to a second spring, the second spring is fixedly connected to the top wall of the groove, one side of the vibration rod is fixedly connected to a connecting column, the connecting column slides through the movable groove, the end of the connecting column away from the vibration rod is fixedly connected to a lifting column, the end of the lifting column away from the connecting column is located between the vibration starting block and the force rod, and the vibration starting block corresponds to the cover plate.

[0022] As a preferred solution of the sewage purification equipment based on the biofilm combined process of the present invention, the width of the vibration starting block is smaller than the gap between the fixed pipe and the force applying rod.

[0023] The purification method using the above-mentioned sewage purification equipment based on the biofilm combination process comprises the following steps:

[0024] Step 1: First, the sewage is added into the sewage purification tank through the water inlet, and then the sewage falls onto the conical filter through the fixed pipe, and the conical filter removes the large particles of impurities in the sewage. Then, the sewage flows through the biofilm layer, and the organic pollutants in the sewage are degraded by the microorganisms attached to the biofilm layer. Finally, the sewage passes through the activated carbon adsorption layer to further adsorb and remove the residual pollutants, and the purified water is discharged from the outlet;

[0025] Step 2: In the process of filtering out large particles of impurities through the conical filter, these impurities are impacted by the water flow and collected on the annular impurity receiving filter plate. When the annular impurity receiving filter plate needs to be cleaned, the drive motor is started, and the output end of the drive motor drives the outer gear ring to rotate clockwise through the active gear, thereby driving the force rod and the vertical rod to rotate synchronously; under the action of the rotational force, the force rod uses the arc structure at its bottom end to cooperate with the inclined surface at the notch to apply a downward pressing force to the force ring, so that the force ring drives the sealing cover downward to fit closely to the surface of the conical filter to prevent the water flow from continuing to enter the area of ​​the annular impurity receiving filter plate; at the same time, the rotation of the vertical rod drives the scraper to rotate along the surface of the annular impurity receiving filter plate, scraping the impurities toward the impurity discharge slot, thereby realizing automatic cleaning, and there is no need to interrupt the sewage purification operation during the cleaning process;

[0026] Step 3: While the vertical rod is rotating, it also drives the connecting column, the vibrating rod and the lifting column to rotate synchronously; when the scraper rotates to the edge of the impurity discharge slot, the lifting column just rotates to the lowest point of the vibration start block. As the rotation continues, the lifting column gradually rises from the lowest point of the vibration start block to the highest point. During this process, the lifting column is forced to move upward, and at the same time drives the connecting column and the vibrating rod to move upward, and the second spring is compressed; when the lifting column rotates out from the highest point of the vibration start block, the vibrating rod suddenly drops under the rebound force of the second spring, knocking the top of the scraper to ensure that impurities will not adhere to the scraper;

[0027] Step 4: After that, continue to drive the scraper, the force rod, and the lifting column to rotate until the force rod rotates back to the notch. When the force rod rotates back to the notch, the sealing cover and the force ring move upward and reset under the action of the rebound force of the first spring; at the same time, the scraper drives the cover plate to reset and cover the top of the impurity discharge groove to prevent a large amount of sewage from entering the impurity receiving box;

[0028] Step 5: After the purification process is completed, remove the fixing plate, pull the piston out of the cleaning port, and then clean the inside of the impurity receiving box to complete the entire purification process.

[0029] Beneficial effects of the present invention:

[0030] 1. In the present invention, when scraping and cleaning the impurities on the annular impurity receiving filter plate, the driving motor is started, and the output end of the driving motor drives the outer gear ring to rotate clockwise through the driving gear, thereby driving the force rod and the vertical rod to rotate synchronously. Under the action of the rotational force, the force rod uses the arc structure at its bottom end to cooperate with the inclined surface at the notch to apply a downward pressing force to the force ring, so that the force ring drives the sealing cover downward to closely fit the surface of the conical filter screen, thereby blocking the water flow from continuing to enter the area of ​​the annular impurity receiving filter plate, and observing the water volume on the annular impurity receiving filter plate through the transparent observation window. When the water volume is large, the driving motor can be turned off when the sealing cover fits the surface of the conical filter screen. When the water volume decreases, the driving motor is started again, and then the impurities are scraped into the impurity discharge groove by the scraper, and then fall into the impurity receiving box for centralized collection. The entire operation process does not need to interrupt the sewage purification operation and does not affect the sewage treatment efficiency. In addition, when scraped by the scraper, the impurities are not easy to flow everywhere with the water flow, ensuring that the impurities can be smoothly scraped into the impurity collection box, thereby improving the impurity cleaning effect.

[0031] 2. In the present invention, when the scraper rotates to the edge of the other side of the impurity discharge groove, the lifting column just rotates to the lowest point of the vibration starting block. As the rotation continues, the lifting column gradually rises from the lowest point of the vibration starting block to the highest point. In this process, the lifting column is forced to move upward, and at the same time drives the connecting column and the vibration rod to move upward, and the second spring is compressed; when the lifting column rotates out from the highest point of the vibration starting block, the vibration rod suddenly drops under the action of the rebound force of the second spring, and knocks the top of the scraper, thereby ensuring that impurities will not adhere to the scraper, thereby further improving the cleaning effect of impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0033] Figure 1 It is a schematic diagram of the overall structure of the sewage purification equipment based on the biofilm combination process of the present invention.

[0034] Figure 2 It is a schematic structural diagram of a sewage purification box of the sewage purification equipment based on the biofilm combination process of the present invention.

[0035] Figure 3 It is a schematic cross-sectional structure diagram of the sewage purification equipment based on the biofilm combination process of the present invention.

[0036] Figure 4It is a schematic diagram of the structure of the filter layer of the sewage purification equipment based on the biofilm combination process of the present invention.

[0037] Figure 5 It is a schematic structural diagram of a cleaning unit of a sewage purification device based on a biofilm combination process of the present invention.

[0038] Figure 6 It is a schematic structural diagram of the water-isolating unit of the sewage purification equipment based on the biofilm combination process of the present invention.

[0039] Figure 7 It is a schematic cross-sectional structural diagram of the water-isolating unit of the sewage purification equipment based on the biofilm combination process of the present invention.

[0040] Figure 8 It is a schematic cross-sectional structure diagram of the connection between the vibration unit and the vertical rod of the sewage purification equipment based on the biofilm combination process of the present invention.

[0041] Fig. 9 It is a schematic diagram of the state structure of the vibration unit of the sewage purification equipment based on the biofilm combination process of the present invention when sewage is purified.

[0042] Fig.10 It is a structural schematic diagram of the lifting column when the lifting column rises to the highest point of the vibration starting block during cleaning of the sewage purification equipment based on the biofilm combination process of the present invention.

[0043] In the figure: 100, main unit; 101, sewage purification box; 102, biofilm layer; 103, activated carbon adsorption layer; 104, filter layer; 104-1, cone filter; 104-2, annular impurity receiving filter plate; 104-3, impurity discharge groove; 105, water inlet; 106, water outlet; 107, transparent observation window; 108, through groove; 109, cleaning port; 200, cleaning unit; 201, outer gear ring; 202, connecting pipe; 203, cleaning assembly; 203-1, vertical rod; 203-2, scraper; 203-3, impurity receiving Receiving box; 203-4, groove; 203-5, moving groove; 203-6, cover plate; 203-7, piston; 203-8, fixed plate; 204, driving gear; 205, extension plate; 206, driving motor; 300, water-proof unit; 301, fixed tube; 302, annular groove; 303, first spring; 304, sealing cover; 305, force ring; 306, force rod; 307, notch; 400, vibration unit; 401, vibration start block; 402, vibration rod; 403, second spring; 404, connecting column; 405, lifting column. DETAILED DESCRIPTION

[0044] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0045] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0046] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0047] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0048] Example 1

[0049] Reference Figure 1-9 , which is the first embodiment of the present invention, provides a sewage purification device based on a biofilm combination process, which mainly includes:

[0050] The main unit 100, such as Figure 1-3 The main unit 100 includes a sewage purification tank 101, a biofilm layer 102 fixedly connected to the inside of the sewage purification tank 101, an activated carbon adsorption layer 103 and a filter layer 104, the biofilm layer 102 is located between the activated carbon adsorption layer 103 and the filter layer 104, and the filter layer 104 is at the top, a water inlet 105 is arranged at the center of the top of the sewage purification tank 101, for introducing sewage into the sewage purification tank 101, a water outlet 106 is arranged at the bottom of the front side of the sewage purification tank 101, for discharging purified clean water from the sewage purification tank 101, a transparent observation window 107 is sealedly arranged on one side of the sewage purification tank 101, a through groove 108 is opened on the upper side of one side of the sewage purification tank 101, and a cleaning port 109 is arranged on the side of the sewage purification tank 101. When the cleaning port 109 is opened, the inside of the impurity receiving box 203-3 can be cleaned.

[0051] like Figure 4The filter layer 104 includes a conical filter 104-1 located inside the sewage purification tank 101 and an annular impurity receiving filter plate 104-2 fixedly connected to the bottom of the circumference of the conical filter 104-1. An impurity discharge groove 104-3 is provided on the annular impurity receiving filter plate 104-2. The outer ring of the annular impurity receiving filter plate 104-2 is sealed and fixed to the sewage purification tank 101. The annular impurity receiving filter plate 104-2 corresponds to a transparent observation window 107, and the water volume on the annular impurity receiving filter plate 104-2 can be conveniently checked through the transparent observation window 107.

[0052] Cleaning unit 200, such as Figure 3 The cleaning unit 200 is located inside the sewage purification tank 101 and is fixedly connected to the sewage purification tank 101 for cleaning the filter layer 104;

[0053] Waterproof unit 300, such as Figure 3 The water-isolating unit 300 is disposed inside the cleaning unit 200 and is fixedly connected to the top wall of the sewage purification tank 101 to block the sewage and avoid hindering the cleaning of the cleaning unit 200;

[0054] Specifically, Figure 5 The cleaning unit 200 includes an outer gear ring 201 movably arranged inside the sewage purification tank 101, a connecting pipe 202 fixedly connected to the top of the outer gear ring 201, a cleaning assembly 203 fixedly connected to the bottom of one side of the outer gear ring 201, a driving gear 204 meshingly connected to one side of the outer gear ring 201, an extension plate 205 fixedly connected to the top of the sewage purification tank 101, and a driving motor 206 fixedly connected to the top of the extension plate 205;

[0055] The central axis of the outer gear ring 201 and the connecting pipe 202 corresponds to the central axis of the water inlet 105. The top of the connecting pipe 202 is rotatably connected to the inner top wall of the sewage purification box 101 through a bearing. The driving gear 204 is movable through the through slot 108. The bottom output end of the driving motor 206 is movable through the extension plate 205 and is fixedly connected to the center of the driving gear 204. When it is necessary to clean the upper surface of the annular impurity receiving filter plate 104-2, the driving motor 206 is started, and the driving motor 206 drives the outer gear ring 201 to rotate clockwise through the driving gear 204. The outer gear ring 201 drives the cleaning component 203 to rotate and clean, and the impurities are scraped to the impurity discharge slot 104-3 through the cleaning component 203 to complete automatic cleaning.

[0056] Furthermore, Figure 5The cleaning component 203 is arranged near the impurity discharge groove 104-3. The cleaning component 203 includes a vertical rod 203-1 fixedly connected to the bottom of the outer gear ring 201, a scraper 203-2 fixedly connected to the bottom end of the vertical rod 203-1, and an impurity receiving box 203-3 fixedly connected to the inside of the impurity discharge groove 104-3.

[0057] like Figure 8 A groove 203-4 is provided at the bottom of the vertical rod 203-1, and a movable groove 203-5 connected to the groove 203-4 is provided on the side of the vertical rod 203-1. The scraper 203-2 is arranged near the edge of one side of the impurity discharge groove 104-3, and the bottom of the scraper 203-2 is movably fitted with the upper surface of the annular impurity receiving filter plate 104-2. The side of the scraper 203-2 facing the counterclockwise rotation direction is fixedly connected with a cover plate 203-6 (such as Fig. 9 ), the cover plate 203-6 is tightly fitted on the top of the impurity discharge groove 104-3. The advantage of this arrangement is that when sewage is filtered, it is not easy for sewage to enter the impurity collection box 203-3, which is convenient for workers to clean the inside of the impurity collection box 203-3 later.

[0058] like Figure 5 , one side of the impurity receiving box 203-3 is fixedly connected to the inner wall of the sewage purification box 101, and the side of the impurity receiving box 203-3 connected to the sewage purification box 101 is an open structure, the opening is sealed and fixedly connected to the sewage purification box 101, and a plugging piece is adapted and plugged into the opening, and the plugging piece includes a piston 203-7 that is sealed and adapted and plugged into the opening, and the piston 203-7 slides out of the cleaning port 109 on the side away from the impurity receiving box 203-3 and is fixedly connected to a fixing plate 203-8, and the fixing plate 203-8 is detachably fixed to the outer wall of the sewage purification box 101, and a handle is fixedly installed on the side of the fixing plate 203-8 away from the piston 203-7. When the purification process is completed, the fixing plate 203-8 is removed, and then the fixing plate 203-8 is pulled back by the handle, so that the piston 203-7 is pulled out from the impurity receiving box 203-3 and the cleaning port 109, and the inside of the impurity receiving box 203-3 can be cleaned.

[0059] Specifically, Figure 7The water-proof unit 300 includes a fixed tube 301 movably arranged at the center of the outer gear ring 201, and the movable cover of the fixed tube 301 is arranged outside the conical filter 104-1. An annular groove 302 is opened at the bottom end of the fixed tube 301, and a plurality of evenly distributed first springs 303 are fixedly connected to the inner top wall of the annular groove 302. A sealing cover 304 is adapted to be inserted at the bottom end of the annular groove 302. The top end of the sealing cover 304 is fixedly connected to the bottom end of the first spring 303, and the bottom end of the sealing cover 304 is an inclined surface parallel to the side of the conical filter 104-1. The purpose of this arrangement is that when the sealing cover 304 moves downward, it can fit tightly with the side of the conical filter 104-1, thereby achieving a water-blocking effect.

[0060] like Figure 6 The sealing cover 304 is fixedly sleeved with a force ring 305 on the outside, and a notch 307 is provided at the corresponding position of the force ring 305 and the vertical rod 203-1, and the two opposite surfaces of the notch 307 are set as downwardly inclined inclined surfaces, and the two inclined surfaces are symmetrically arranged, and a force rod 306 is movably arranged in the notch 307, and the top of the force rod 306 is fixedly connected to the bottom of the outer gear ring 201, and the bottom end of the force rod 306 is set as an arc structure, and the arc of the bottom end of the force rod 306 is movably fitted with the lower part of the inclined surface. The purpose of such a setting is that when the force rod 306 is subjected to a clockwise rotational force, the arc structure at its bottom end can be used to cooperate with the inclined surface at the notch 307 to apply a downward pressing force to the force ring 305, so that the force ring 305 drives the sealing cover 304 downward to fit closely with the surface of the conical filter 104-1 to prevent the water flow from continuing to enter the area of ​​the annular impurity receiving filter plate 104-2. The force applying rod 306 is spaced apart from the fixing tube 301 , so that when the force applying rod 306 rotates, no friction is generated between the fixing tube 301 .

[0061] In summary, when the impurities on the annular impurity receiving filter plate 104-2 are scraped and cleaned in the present invention, the drive motor 206 is started, and the output end of the drive motor 206 drives the outer gear ring 201 to rotate clockwise through the active gear 204, thereby driving the force rod 306 and the vertical rod 203-1 to rotate synchronously; under the action of the rotational force, the force rod 306 uses the arc structure at its bottom end to cooperate with the inclined surface at the notch 307 to apply a downward pressing force to the force ring 305, so that the force ring 305 drives the sealing cover 304 to fit tightly downwardly with the surface of the conical filter 104-1, thereby preventing the water flow from continuing to enter the area of ​​the annular impurity receiving filter plate 104-2; the annular impurity receiving filter plate 104-2 is observed through the transparent observation window 107 When there is a lot of water on the filter plate 104-2, when the sealing cover 304 is attached to the surface of the conical filter 104-1, the drive motor 206 can be turned off to allow the sewage to be filtered through the annular impurity receiving filter plate 104-2 and fall off. When the water volume decreases, the drive motor 206 is started again, and then the impurities are scraped into the impurity discharge groove 104-3 by the scraper 203-2, and then fall into the impurity receiving box 203-3 for centralized collection. During the entire operation process, there is no need to interrupt the sewage purification operation and does not affect the sewage treatment efficiency. In addition, when scraped by the scraper 203-2, the impurities are not easy to flow everywhere with the water flow, ensuring that the impurities can be smoothly scraped into the impurity collection box 203-3, thereby improving the impurity cleaning effect.

[0062] Example 2

[0063] Reference Figure 8-10 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: the device also includes a vibration unit 400, and the vibration unit 400 is connected to the cleaning unit 200 and the water-proof unit 300.

[0064] Specifically, the vibration unit 400 includes a vibration starting block 401 fixedly connected to the outer side surface of the fixed tube 301 and a vibration rod 402 adapted to slide with the groove 203-4. The top of the vibration starting block 401 is set as an inclined arc surface, and the side of the arc surface facing the force rod 306 is the highest point. The top of the vibration rod 402 is fixedly connected to a second spring 403, and the second spring 403 is fixedly connected to the inner top wall of the groove 203-4. A connecting column 404 is fixedly connected to one side of the vibration rod 402, and the connecting column 404 slides through the movable groove 203-5. The end of the connecting column 404 away from the vibration rod 402 is fixedly connected to a lifting column 405, and the end of the lifting column 405 away from the connecting column 404 is located between the vibration starting block 401 and the force rod 306, and the vibration starting block 401 corresponds to the cover plate 203-6. The width of the vibration start block 401 is smaller than the gap between the fixed tube 301 and the force rod 306. The purpose of this arrangement is that when the force rod 306 rotates, it will not collide with the vibration start block 401, and the rotation of the force rod 306 will not be hindered by the existence of the vibration start block 401.

[0065] The remaining structures are the same as those of Example 1.

[0066] In summary, when the scraper 203-2 rotates to the edge of the other side of the impurity discharge groove 104-3, the lifting column 405 just rotates to the lowest point of the vibration starting block 401. As the rotation continues, the lifting column 405 gradually rises from the lowest point of the vibration starting block 401 to the highest point. In this process, the lifting column 405 is forced to move upward, and at the same time drives the connecting column 404 and the vibration rod 402 to move upward, and the second spring 403 is compressed; when the lifting column 405 rotates out from the highest point of the vibration starting block 401, the vibration rod 402 suddenly drops under the action of the rebound force of the second spring 403, and knocks the top of the scraper 203-2, thereby ensuring that impurities will not adhere to the scraper 203-2, thereby further improving the cleaning effect of impurities.

[0067] The purification method using the above-mentioned sewage purification equipment based on the biofilm combination process comprises the following steps:

[0068] Step 1: First, sewage is added into the sewage purification tank 101 through the water inlet 105, and then the sewage falls onto the conical filter 104-1 through the fixed pipe 301, and the conical filter 104-1 filters out large particles of impurities in the sewage. Then, the sewage flows through the biofilm layer 102, and the organic pollutants in the sewage are degraded by the microorganisms attached to the biofilm layer 102. Finally, the sewage passes through the activated carbon adsorption layer 103, and the residual pollutants are further adsorbed and removed, and the purified water is discharged from the outlet 106;

[0069] Step 2: During the process of filtering out large particles of impurities through the conical filter 104-1, these impurities are impacted by the water flow and collected on the annular impurity receiving filter plate 104-2. When the annular impurity receiving filter plate 104-2 needs to be cleaned, the drive motor 206 is started, and the output end of the drive motor 206 drives the outer gear ring 201 to rotate clockwise through the driving gear 204, thereby driving the force rod 306 and the vertical rod 203-1 to rotate synchronously; under the action of the rotational force, the force rod 306 uses the arc structure at its bottom and the notch to The inclined surface at 307 cooperates to apply downward pressing force to the stress ring 305, so that the stress ring 305 drives the sealing cover 304 downward to fit closely to the surface of the conical filter 104-1, so as to prevent the water flow from continuing to enter the area of ​​the annular impurity receiving filter plate 104-2; at the same time, the rotation of the vertical rod 203-1 drives the scraper 203-2 to rotate along the surface of the annular impurity receiving filter plate 104-2, scraping the impurities toward the impurity discharge groove 104-3, realizing automatic cleaning, and there is no need to interrupt the sewage purification operation during the cleaning process;

[0070] Step 3: While the vertical rod 203-1 is rotating, it also drives the connecting column 404, the vibration rod 402 and the lifting column 405 to rotate synchronously; when the scraper 203-2 rotates to the edge of the impurity discharge slot 104-3, the lifting column 405 just rotates to the lowest point of the vibration start block 401, and as the rotation continues, the lifting column 405 gradually rises from the lowest point of the vibration start block 401 to the highest point. In this process, the lifting column 405 is forced to move upward, and at the same time drives the connecting column 404 and the vibration rod 402 to move upward, and the second spring 403 is compressed; when the lifting column 405 rotates out from the highest point of the vibration start block 401, the vibration rod 402 suddenly drops under the rebound force of the second spring 403, and knocks the top of the scraper 203-2 to ensure that impurities will not adhere to the scraper 203-2;

[0071] Step 4: After that, the scraper 203-2, the force rod 306, and the lifting column 405 continue to rotate until the force rod 306 rotates back to the notch 307. When the force rod 306 rotates back to the notch 307, the sealing cover 304 and the force ring 305 move upward and reset under the action of the rebound force of the first spring 303; at the same time, the scraper 203-2 drives the cover plate 203-6 to reset and cover the top of the impurity discharge groove 104-3 to prevent a large amount of sewage from entering the impurity receiving box 203-3;

[0072] Step 5: After the purification process is completed, the fixing plate 203-8 is disassembled, the piston 203-7 is pulled out from the cleaning port 109, and then the inside of the impurity receiving box 203-3 is cleaned to complete the entire purification process.

[0073] It is worth noting that the entire device is controlled by a controller. Since the controller is a commonly used device and belongs to the existing mature technology, its electrical connection relationship and specific circuit structure will not be described in detail here.

[0074] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A sewage purification device based on a biofilm combined process, characterized in that: include: A main unit (100), the main unit (100) comprising a sewage purification box (101), a biofilm layer (102) fixedly connected to the interior of the sewage purification box (101), an activated carbon adsorption layer (103) and a filtration layer (104), wherein the biofilm layer (102) is located between the activated carbon adsorption layer (103) and the filtration layer (104); A cleaning unit (200), the cleaning unit (200) being located inside the sewage purification box (101) and fixedly connected to the sewage purification box (101), and being used to clean the filter layer (104); A water-isolating unit (300), the water-isolating unit (300) being arranged inside the cleaning unit (200) and fixedly connected to the top wall inside the sewage purification box (101), and being used to isolate sewage to avoid hindering cleaning by the cleaning unit (200); A vibration unit (400), wherein the vibration unit (400) is connected to the cleaning unit (200) and the water-isolating unit (300).

2. The sewage purification equipment based on the biofilm combined process according to claim 1 is characterized in that: The sewage purification box (101) is provided with a water inlet (105) at the center of the top, a water outlet (106) is provided at the bottom of the front side of the sewage purification box (101), a through groove (108) is provided at the upper side of one side of the sewage purification box (101), and a cleaning port (109) is provided on the side of the sewage purification box (101).

3. The sewage purification equipment based on the biofilm combined process as claimed in claim 2 is characterized by: A transparent observation window (107) is sealed and provided on one side of the sewage purification box (101).

4. The sewage purification equipment based on the biofilm combined process according to claim 1 is characterized in that: The filter layer (104) comprises a conical filter (104-1) located inside the sewage purification box (101) and an annular impurity receiving filter plate (104-2) fixedly connected to the bottom of the circumference of the conical filter (104-1); an impurity discharge groove (104-3) is provided on the annular impurity receiving filter plate (104-2); the outer ring of the annular impurity receiving filter plate (104-2) is sealed and fixed to the sewage purification box (101); and the annular impurity receiving filter plate (104-2) corresponds to a transparent observation window (107).

5. The sewage purification equipment based on the biofilm combined process according to claim 1 is characterized in that: The cleaning unit (200) comprises an outer gear ring (201) movably arranged inside the sewage purification box (101), a connecting pipe (202) fixedly connected to the top of the outer gear ring (201), a cleaning assembly (203) fixedly connected to the bottom of one side of the outer gear ring (201), a driving gear (204) meshingly connected to one side of the outer gear ring (201), an extension plate (205) fixedly connected to the top of the sewage purification box (101), and a driving motor (206) fixedly connected to the top of the extension plate (205); The central axis of the outer gear ring (201) and the connecting pipe (202) corresponds to the central axis of the water inlet (105); the top end of the connecting pipe (202) is rotatably connected to the inner top wall of the sewage purification box (101) via a bearing; the driving gear (204) movably passes through the through slot (108); and the bottom output end of the driving motor (206) movably passes through the extension plate (205) and is fixedly connected to the center of the driving gear (204).

6. The sewage purification equipment based on the biofilm combined process as claimed in claim 5, characterized in that: The cleaning assembly (203) is arranged close to the impurity discharge groove (104-3), and comprises a vertical rod (203-1) fixedly connected to the bottom of the outer gear ring (201), a scraper (203-2) fixedly connected to the bottom end of the vertical rod (203-1), and an impurity receiving box (203-3) fixedly connected to the inside of the impurity discharge groove (104-3); A groove (203-4) is provided at the bottom end of the vertical rod (203-1), a movable groove (203-5) connected to the groove (203-4) is provided on the side of the vertical rod (203-1), the scraper (203-2) is arranged near the edge of one side of the impurity discharge groove (104-3), the bottom of the scraper (203-2) is movably fitted with the upper surface of the annular impurity receiving filter plate (104-2), and a cover plate (203-6) is fixedly connected to the side of the scraper (203-2) facing the impurity discharge groove (104-3), and the cover plate (203-6) is movably covered at the top of the impurity discharge groove (104-3); One side of the impurity receiving box (203-3) is fixedly connected to the inner wall of the sewage purification box (101), and the side of the impurity receiving box (203-3) connected to the sewage purification box (101) is an open structure, and a plugging piece is adapted to be plugged into the opening, and the plugging piece includes a piston (203-7) that is seal-adapted to be plugged into the opening, and the side of the piston (203-7) away from the impurity receiving box (203-3) slides through the cleaning port (109) and is fixedly connected to a fixing plate (203-8), and the fixing plate (203-8) is detachably fixed to the outer wall of the sewage purification box (101), and a handle is fixedly installed on the side of the fixing plate (203-8) away from the piston (203-7).

7. The sewage purification equipment based on the biofilm combined process according to claim 1 is characterized in that: The water-proof unit (300) comprises a fixed tube (301) movably arranged at the center of the outer gear ring (201), an annular groove (302) is provided at the bottom end of the fixed tube (301), a plurality of evenly distributed first springs (303) are fixedly connected to the inner top wall of the annular groove (302), a sealing cover (304) is adapted to be plugged into the bottom end of the annular groove (302), the top end of the sealing cover (304) is fixedly connected to the bottom end of the first spring (303), and the bottom end of the sealing cover (304) is an inclined surface parallel to the side of the conical filter (104-1); The sealing cover (304) is fixedly sleeved with a force ring (305) on the outside, and a notch (307) is provided at the position corresponding to the vertical rod (203-1), and the two opposite surfaces of the notch (307) are both arranged as downwardly inclined inclined surfaces, and the two inclined surfaces are arranged symmetrically, and a force rod (306) is movably arranged in the notch (307), and the top end of the force rod (306) is fixedly connected to the bottom of the outer gear ring (201), and the bottom end of the force rod (306) is arranged as an arc structure, and the arc of the bottom end of the force rod (306) is movably fitted with the bottom of the inclined surface, and the force rod (306) is spaced apart from the fixed tube (301).

8. The sewage purification equipment based on the biofilm combined process according to claim 1, characterized in that: The vibration unit (400) comprises a vibration start block (401) fixedly connected to the outer side surface of the fixed tube (301) and a vibration rod (402) adapted to slide with the groove (203-4); the top of the vibration start block (401) is arranged as an inclined arc surface, and the side of the arc surface facing the force application rod (306) is the highest point; the top of the vibration rod (402) is fixedly connected to a second spring (403); the second spring (403) is fixed to the inner top wall of the groove (203-4). The vibration rod (402) is connected with a connection column (404) fixedly connected to one side thereof, and the connection column (404) slides through the movable groove (203-5). The end of the connection column (404) away from the vibration rod (402) is fixedly connected to a lifting column (405). The end of the lifting column (405) away from the connection column (404) is located between the vibration starting block (401) and the force applying rod (306). The vibration starting block (401) corresponds to the cover plate (203-6).

9. The sewage purification equipment based on the biofilm combined process as claimed in claim 8, characterized in that: The width of the vibration starting block (401) is smaller than the gap between the fixing tube (301) and the force applying rod (306).

10. The purification method of sewage purification equipment based on biofilm combined process according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: First, sewage is added into the sewage purification box (101) through the water inlet (105), and then the sewage falls onto the conical filter (104-1) through the fixed pipe (301), and the conical filter (104-1) filters out large particles of impurities in the sewage. Then, the sewage flows through the biofilm layer (102), and the organic pollutants in the sewage are degraded by the microorganisms attached to the biofilm layer (102). Finally, the sewage passes through the activated carbon adsorption layer (103), and the residual pollutants are further adsorbed and removed, and the purified water is discharged from the water outlet (106); Step 2: During the process of filtering out large particles of impurities by the conical filter (104-1), these impurities are impacted by the water flow and collected on the annular impurity receiving filter plate (104-2). When the annular impurity receiving filter plate (104-2) needs to be cleaned, the drive motor (206) is started, and the output end of the drive motor (206) drives the outer gear ring (201) to rotate clockwise through the driving gear (204), thereby driving the force rod (306) and the vertical rod (203-1) to rotate synchronously; under the action of the rotational force, the force rod (306) uses the arc structure at the bottom end and the notch to rotate. The inclined surface at (307) cooperates to apply downward pressing force to the force ring (305), so that the force ring (305) drives the sealing cover (304) to fit tightly downwardly on the surface of the conical filter (104-1), so as to prevent the water flow from continuing to enter the area of ​​the annular impurity receiving filter plate (104-2); at the same time, the rotation of the vertical rod (203-1) drives the scraper (203-2) to rotate along the surface of the annular impurity receiving filter plate (104-2), scraping the impurities toward the impurity discharge groove (104-3), thereby realizing automatic cleaning, and the sewage purification operation does not need to be interrupted during the cleaning process; Step 3: While the vertical rod (203-1) is rotating, it also drives the connecting column (404), the vibrating rod (402) and the lifting column (405) to rotate synchronously; when the scraper (203-2) rotates to the edge of the impurity discharge groove (104-3), the lifting column (405) just rotates to the lowest point of the vibration start block (401), and as the rotation continues, the lifting column (405) gradually rises from the lowest point of the vibration start block (401) to the highest point. During this process, the lifting column (405) is forced to move upward, and at the same time drives the connecting column (404) and the vibrating rod (402) to move upward, and the second spring (403) is compressed; when the lifting column (405) rotates out from the highest point of the vibration start block (401), the vibrating rod (402) suddenly drops under the rebound force of the second spring (403), and knocks the top of the scraper (203-2) to ensure that impurities will not adhere to the scraper (203-2); Step 4: Afterwards, the scraper (203-2), the force rod (306), and the lifting column (405) are continuously driven to rotate until the force rod (306) rotates back to the notch (307). When the force rod (306) rotates back to the notch (307), the sealing cover (304) and the force ring (305) move upward and reset under the action of the rebound force of the first spring (303); at the same time, the scraper (203-2) drives the cover plate (203-6) to reset and cover the top of the impurity discharge groove (104-3) to prevent a large amount of sewage from entering the impurity receiving box (203-3); Step 5: After the purification process is completed, the fixing plate (203-8) is disassembled, the piston (203-7) is pulled out from the cleaning port (109), and then the inside of the impurity receiving box (203-3) is cleaned to complete the entire purification process.

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