Sewage treatment device with multi-stage filtering function

Abstract

The utility model discloses a sewage treatment device with a multi-stage filtering function. The sewage treatment device comprises a trash holding tank, a treatment tank and a filtering tank, a trash holding grid and a filter screen are arranged in the trash holding box, and the surface of the trash holding box communicates with a first conveying pump; an electric heating plate is fixed to the surface of the treatment tank, the top of the treatment tank communicates with a treatment shell, an ultraviolet lamp tube is fixed to the top of the inner wall of the treatment shell, the top of the treatment tank communicates with a liquid adding pipe, a driving motor is fixed to the top of the treatment shell, and an output shaft of the driving motor penetrates into the treatment tank and is fixedly provided with a stirring rod. One end of the first delivery pump is communicated with the upper part of the surface of the treatment tank through a pipeline, the lower part of the surface of the treatment tank is communicated with a first electromagnetic valve, and the bottom of the treatment tank is communicated with a second electromagnetic valve; a first filter screen, a second filter screen and a third filter screen are arranged in the filtering tank. According to the utility model, a plurality of treatment structures are combined for use, so that sewage can be subjected to multi-stage filtration, and the sewage treatment effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a sewage treatment device with a multi-stage filtering function. Background Art

[0002] With the continuous improvement of the quality of life, the degree of environmental pollution is gradually deepening. The continuous pollution of the environment will not only have a great impact on the food chain and cause the extinction of a large number of endangered species, but also cause great harm to people's bodies. In view of the severe situation of sewage treatment construction in my country, the country encourages the use of recycled water, which will also provide a broad market space for sewage deep treatment business.

[0003] Traditional sewage treatment devices have a single treatment effect and often specialize in relying on physical filtration to remove suspended matter in sewage, but have poor sterilization and disinfection effects on sewage, resulting in poor quality of treated sewage that is difficult to meet usage requirements. Utility Model Content

[0004] The utility model aims to provide a sewage treatment device with a multi-stage filtering function, through the combined use of a plurality of treatment structures, the sewage can be filtered in multiple stages, thereby improving the sewage treatment effect.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sewage treatment device with multi-stage filtering function, comprising a sewage intercepting box, a treatment tank and a filtering tank;

[0006] The interior of the trash box is provided with a trash grille and a blocking filter, and the surface of the trash box is connected to a first delivery pump;

[0007] The surface of the treatment tank is fixed with an electric heating plate, the top of the treatment tank is connected to a treatment shell, the top of the inner wall of the treatment shell is fixed with an ultraviolet lamp, the top of the treatment tank is connected to a liquid adding pipe, the top of the treatment shell is fixed with a driving motor, the output shaft of the driving motor passes through the inside of the treatment tank and is fixed with a stirring rod, one end of the first delivery pump is connected to the upper surface of the treatment tank through a pipeline, the lower surface of the treatment tank is connected to a first solenoid valve, and the bottom of the treatment tank is connected to a second solenoid valve;

[0008] The first filter screen, the second filter screen and the third filter screen are arranged inside the filter tank, and the top of the filter tank is connected to a second delivery pump through a pipeline.

[0009] As a preferred sewage treatment device with multi-stage filtering function of the utility model, an extension rod is fixed to the bottom of the stirring rod, a scraper is fixed to the surface of the extension rod, and the scraper surface is slidably connected to the inner wall of the treatment tank.

[0010] As a preferred embodiment of the sewage treatment device with multi-stage filtering function of the utility model, a partition is fixed on the surface of the treatment shell, the partition is made of a transparent material, and the surface of the stirring rod passes through the partition.

[0011] As a preferred sewage treatment device with multi-stage filtering function of the utility model, the first filter screen is a stainless steel filter screen.

[0012] As a preferred sewage treatment device with multi-stage filtering function of the utility model, the second filter screen is a nylon filter screen, and the third filter screen is a polytetrafluoroethylene or polyvinylidene fluoride microporous filter screen.

[0013] As a preferred sewage treatment device with multi-stage filtration function of the utility model, two U-shaped shells are fixed on the inner wall of the dirt retaining box, and a mounting groove is opened on the surface of the U-shaped shell. The dirt retaining grille and the blocking filter are both located inside the mounting groove, and a cleaning door is hinged on the top of the dirt retaining box.

[0014] As a preferred embodiment of the sewage treatment device with multi-stage filtering function of the utility model, a thermocouple is installed on the surface of the treatment tank.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0016] The utility model can effectively intercept impurities in sewage by arranging a dirt intercepting box, a treatment tank and a filter tank, and the sewage after filtering out the impurities can be mixed with a flocculant, and can also be subjected to a joint sterilization treatment of ultraviolet irradiation and heating, effectively killing or inhibiting the growth of microorganisms, significantly improving the quality of the final effluent, and then the three filter screens inside the filter tank perform the final filtration. Through the combined action of multiple structures, the sewage can obtain a better filtering effect, ensuring the sewage filtration accuracy, and improving the processing quality and stability of the entire filtration system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0019] Figure 3 It is a partial cross-sectional structural schematic diagram of the utility model;

[0020] Figure 4 It is a schematic diagram of the partial cross-sectional structure of the utility model.

[0021] In the figure: 1. Trash box; 2. Processing tank; 3. Filter tank; 4. Electric heating plate; 5. Processing shell; 6. Ultraviolet lamp; 7. Liquid adding tube; 8. Driving motor; 9. Stirring rod; 10. First delivery pump; 11. Trash grille; 12. First filter; 13. Second filter; 14. First solenoid valve; 15. Second delivery pump; 16. Second solenoid valve; 17. Extension rod; 18. Partition; 19. Thermocouple; 20. Blocking filter; 21. U-shaped shell; 22. Cleaning door; 23. Third filter. DETAILED DESCRIPTION

[0022] See also Figure 1-4 , a sewage treatment device with multi-stage filtering function, comprising a sewage blocking box 1, a treatment tank 2 and a filtering tank 3;

[0023] The sewage intercepting box 1 is used to intercept impurities in sewage, the treatment tank 2 sterilizes the intercepted sewage, and the filter tank 3 filters the sterilized sewage.

[0024] A trash grille 11 and a blocking filter 20 are arranged inside the trash box 1, a water inlet is arranged on the left side of the trash box 1, and a first delivery pump 10 is connected to the surface of the trash box 1;

[0025] Sewage can be introduced into the trash box 1 from the left side, the trash grille 11 can intercept large impurities in the sewage, and the blocking filter 20 can intercept smaller impurities in the sewage. The combination of the two can effectively intercept impurities in the sewage, and then the sewage can be transported by the first delivery pump 10.

[0026] An electric heating plate 4 is fixed on the surface of the treatment tank 2, a treatment shell 5 is connected to the top of the treatment tank 2, an ultraviolet lamp 6 is fixed to the top of the inner wall of the treatment shell 5, a liquid adding pipe 7 is connected to the top of the treatment tank 2, a driving motor 8 is fixed to the top of the treatment shell 5, the output shaft of the driving motor 8 passes through the inside of the treatment tank 2 and is fixed with a stirring rod 9, one end of the first delivery pump 10 is connected to the top of the treatment tank 2 through a pipeline, a first solenoid valve 14 is connected to the bottom of the treatment tank 2, and a second solenoid valve 16 is connected to the bottom of the treatment tank 2;

[0027] The first delivery pump 10 can deliver the sewage to the inside of the treatment tank 2, and the liquid adding pipe 7 can add flocculants. When the driving motor 8 is started, it can drive the stirring rod 9 to mix the sewage and the flocculant, which is convenient for subsequent filtration and precipitation removal. After the mixing is completed, the driving motor 8 stops running, and the sewage begins to settle. At the same time, the electric heating plate 4 and the ultraviolet lamp 6 are in working state. The heating of the electric heating plate 4 can increase the temperature of the sewage, accelerate the reaction rate of chemical additives such as flocculants, make the flocculation process faster and more thorough, and help to form larger and more stable flocs, which is convenient for subsequent precipitation or filtration removal, and the ultraviolet lamp 6 The emitted ultraviolet rays can destroy the DNA structure of microorganisms to inactivate pathogens such as bacteria and viruses. The microbial activity of the heated sewage will become more active. At this time, combined with ultraviolet sterilization, it can more effectively kill or inhibit the growth of microorganisms and improve the sterilization efficiency. In addition, the increase in temperature may also increase the permeability of the microbial cell membrane, making it easier for ultraviolet rays to penetrate the cell wall and enhance the sterilization effect. After the sewage is heated and sterilized with ultraviolet rays for a period of time, the sewage inside the treatment tank 2 can be discharged by opening the first solenoid valve 14, and the impurities precipitated inside the treatment tank 2 can be discharged by opening the second delivery pump 15.

[0028] A first filter screen 12, a second filter screen 13 and a third filter screen 23 are arranged inside the filter tank 3, a drain valve is connected to the bottom of the filter tank 3, a second delivery pump 15 is connected to the top of the filter tank 3 through a pipeline, one end of the second delivery pump 15 is connected to the first solenoid valve 14 through a pipeline, three drain valves are connected to the right side of the surface of the filter tank 3, the upper drain valve is located above the first filter screen 12, the middle drain valve is located above the second filter screen 13, and the lower drain valve is located above the third filter screen 23. The first filter screen 12, the second filter screen 13 and the third filter screen 23 are all detachably connected to the inner wall of the filter tank 3 by bolts, and a processing door is hinged on the surface of the filter tank 3;

[0029] After opening the first solenoid valve 14 and the second delivery pump 15, the sewage that has been sterilized by heating and ultraviolet rays can be introduced into the filter tank 3. At this time, the sewage will pass through the first filter screen 12, the second filter screen 13 and the third filter screen 23 from top to bottom. The first filter screen 12 can intercept impurities in the sewage again, and the second filter screen 13 can filter the sewage. The third filter screen 23 can filter the sewage more finely to ensure the sewage filtration accuracy. The combination of the three can effectively improve the processing quality and stability of the entire filtration system. The filtered sewage can be discharged normally through the drain valve, and the setting of multiple drain valves enables the impurities intercepted by the first filter screen 12, the second filter screen 13 and the third filter screen 23 to be discharged through the drain valve. At the same time, after opening the processing door, the operator can disassemble and replace the first filter screen 12, the second filter screen 13 and the third filter screen 23 and the filter tank 3.

[0030] Furthermore, an extension rod 17 is fixed to the bottom of the stirring rod 9, a scraper is fixed to the surface of the extension rod 17, and the surface of the scraper is slidably connected to the inner wall of the processing tank 2;

[0031] When the stirring rod 9 rotates, it can drive the extension rod 17 to rotate synchronously, so that the scraper can scrape the inner wall of the processing tank 2, so that the impurities adhering to the inner wall of the processing tank 2 can be effectively removed.

[0032] Furthermore, a partition 18 is fixed on the surface of the processing shell 5, and the partition 18 is made of a transparent material, and the surface of the stirring rod 9 passes through the partition 18;

[0033] The partition 18 can block the splashed sewage to prevent the sewage from directly contacting the ultraviolet lamp 6, and the setting of the transparent material ensures that the ultraviolet rays can pass through the partition 18 normally.

[0034] Furthermore, the first filter screen 12 is a stainless steel filter screen;

[0035] The stainless steel filter has good mechanical strength and pore structure. It can effectively remove larger suspended matter and particles that are not completely flocculated. At the same time, the stainless steel filter can be used as a coarse filtration layer to remove larger solid matter in sewage and protect the subsequent filter from damage by large particles.

[0036] Further, the second filter 13 is a nylon filter, and the third filter 23 is a polytetrafluoroethylene or polyvinylidene fluoride microporous filter;

[0037] Nylon filter, with its good toughness, wear resistance and moderate filtering accuracy, can effectively intercept finer particles, such as suspended solids, colloids, etc. As a medium-efficiency filtration layer, it further captures smaller suspended particles and some colloids to prepare for fine filtration. PTFE or PVDF filter has extremely high chemical stability and high temperature resistance. The pore size can reach micron or even submicron level. It is very suitable for removing extremely fine particles, bacteria, some viruses and certain soluble organic matter. As the last line of filtration defense, it is located at the end of the entire filtration system to ensure the high purity of the final water output and meet strict water quality requirements.

[0038] Furthermore, two U-shaped shells 21 are fixed to the inner wall of the dirt-blocking box 1, and a mounting groove is provided on the surface of the U-shaped shell 21. The dirt-blocking grille 11 and the blocking filter 20 are both located inside the mounting groove, and a cleaning door 22 is hinged on the top of the dirt-blocking box 1;

[0039] The trash screen 11 and the blocking filter 20 can obtain a limiting effect in the installation groove on the surface of the U-shaped shell 21, thereby preventing the trash screen 11 and the blocking filter 20 from tipping over to the right during the impact of water flow. At the same time, the operator can open the cleaning door 22 and pull the trash screen 11 and the blocking filter 20 upward to remove the trash screen 11 and the blocking filter 20 from the inside of the trash box 1 for cleaning.

[0040] Further, a thermocouple 19 is installed on the surface of the processing tank 2;

[0041] The thermocouple 19 can monitor the temperature inside the treatment tank 2 , so that the operator can confirm the heating status of the sewage inside the treatment tank 2 .

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sewage treatment device with multi-stage filtration function, characterized in that: It comprises a dirt trap box (1), a treatment tank (2) and a filter tank (3); The trash box (1) is provided with a trash grille (11) and a blocking filter (20) inside, and the surface of the trash box (1) is connected to a first delivery pump (10); The surface of the treatment tank (2) is fixed with an electric heating plate (4); the top of the treatment tank (2) is connected to a treatment shell (5); an ultraviolet lamp tube (6) is fixed to the top of the inner wall of the treatment shell (5); the top of the treatment tank (2) is connected to a liquid adding pipe (7); the top of the treatment shell (5) is fixed with a driving motor (8); the output shaft of the driving motor (8) passes through the interior of the treatment tank (2) and is fixed with a stirring rod (9); one end of the first delivery pump (10) is connected to the surface above the treatment tank (2) through a pipeline; the bottom of the treatment tank (2) is connected to a first solenoid valve (14); and the bottom of the treatment tank (2) is connected to a second solenoid valve (16); A first filter screen (12), a second filter screen (13) and a third filter screen (23) are arranged inside the filter tank (3), and a second delivery pump (15) is connected to the top of the filter tank (3) via a pipeline.

2. A sewage treatment device with multi-stage filtration function according to claim 1, characterized in that: An extension rod (17) is fixed at the bottom of the stirring rod (9), a scraper is fixed on the surface of the extension rod (17), and the surface of the scraper is slidably connected to the inner wall of the processing tank (2).

3. The sewage treatment device with multi-stage filtration function according to claim 1, characterized in that: A partition (18) is fixed on the surface of the processing shell (5), the partition (18) is made of a transparent material, and the surface of the stirring rod (9) passes through the partition (18).

4. The sewage treatment device with multi-stage filtration function according to claim 1, characterized in that: The first filter screen (12) is a stainless steel filter screen.

5. The sewage treatment device with multi-stage filtration function according to claim 1, characterized in that: The second filter screen (13) is a nylon filter screen, and the third filter screen (23) is a polytetrafluoroethylene or polyvinylidene fluoride microporous filter screen.

6. The sewage treatment device with multi-stage filtration function according to claim 1, characterized in that: Two U-shaped shells (21) are fixed on the inner wall of the dirt-blocking box (1), and a mounting groove is provided on the surface of the U-shaped shell (21). The dirt-blocking grille (11) and the blocking filter (20) are both located inside the mounting groove. A cleaning door (22) is hinged on the top of the dirt-blocking box (1).

7. The sewage treatment device with multi-stage filtration function according to claim 1, characterized in that: A thermocouple (19) is installed on the surface of the processing tank (2).

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