A water purification system and method for improving water quality based on biological carbon source

Abstract

The present invention discloses a water purification system and method for improving water quality based on biological carbon sources, and belongs to the technical field of sewage treatment. A water purification system for improving water quality based on biological carbon sources includes a purification pool in a circular shape, and also includes: a pillar fixedly connected to the middle part of the purification pool, wherein an annular groove is formed between the outer wall of the pillar and the inner wall of the purification pool, and a device groove is provided in the middle part of the upper end of the pillar; a horizontal plate rotatably connected to the upper end of the purification pool, wherein two groups of symmetrically arranged mesh plates are installed at the lower end of the horizontal plate, and the two groups of mesh plates are arranged in the annular groove, and a driving part for driving the horizontal plate to rotate is provided in the device groove, and a lifting part for driving the two groups of mesh plates to move up and down is provided on the horizontal plate; the microorganisms in the sewage of the present invention have better activity, and the added biological carbon source can be evenly distributed in the sewage.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to a water purification system and method for improving water quality based on a biological carbon source. Background Art

[0002] The shortage and pollution of water resources are environmental problems facing the world. How to protect water resources, how to treat polluted water and how to achieve a virtuous cycle of water resources have become issues that need to be urgently addressed worldwide. Using microorganisms to purify water is actually to decompose organic matter in the water through the metabolic activities of microorganisms, thereby achieving the purpose of purifying sewage. Microorganisms can also absorb sugar, protein, fat, starch and other low-molecular compounds from sewage.

[0003] In the prior art, when using microorganisms to purify water, in order to ensure the purification efficiency of the microorganisms, biological carbon sources are regularly added to the sewage. However, the structure of the purification tank for purifying sewage is relatively simple, which leads to poor sewage fluidity, and in turn makes it difficult for microorganisms to absorb biological springs, resulting in low activity of the microorganisms, making it difficult to ensure a high sewage purification efficiency. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that the purification tank structure is relatively simple and it is difficult to ensure a high sewage purification efficiency, and to propose a water purification system and method for improving water quality based on a biological carbon source.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A water purification system for improving water quality based on biological carbon sources includes a purification tank in a circular shape, and also includes: a pillar fixedly connected to the middle part of the purification tank, wherein an annular groove is formed between the outer wall of the pillar and the inner wall of the purification tank, and a device groove is provided in the middle part of the upper end of the pillar; a horizontal plate rotatably connected to the upper end of the purification tank, wherein two groups of symmetrically arranged mesh plates are installed at the lower end of the horizontal plate, and the two groups of mesh plates are arranged in the annular groove, and a driving part for driving the horizontal plate to rotate is provided in the device groove, and a lifting part for driving the two groups of mesh plates to move up and down is provided on the horizontal plate.

[0007] In order to facilitate driving the mesh plate to move in the annular groove, preferably, the driving part includes a driving motor fixedly installed in the device groove, and the output shaft of the driving motor is fixedly installed with a driving gear, wherein the lower end of the horizontal plate is fixedly connected with a vertical shaft, and the vertical shaft is fixedly installed with a driven gear meshing with the driving gear.

[0008] In order to drive the mesh plate to move up and down in the annular groove, preferably, the lifting part includes a reciprocating screw rotatably connected to the upper end of the horizontal plate, and the upper end of the horizontal plate is fixedly connected to a guide rod arranged parallel to the reciprocating screw, wherein the outer wall of the reciprocating screw is threadedly connected to a lifting plate slidably connected to the guide rod, the mesh plate is fixedly mounted on the lifting plate, the lower end of the reciprocating screw is fixedly mounted with a passive gear, and the inner wall of the device groove is fixedly mounted with a ring gear meshing with the passive gear.

[0009] In order to aerate the sewage in the annular groove, preferably, a nozzle is fixedly connected to the bottom of the mesh plate, a nozzle is fixedly installed on the outer wall of the nozzle, and an air supply part for supplying air to the nozzle is provided on the horizontal plate.

[0010] In order to automatically supply air to the nozzle, the air supply part further includes a telescopic airbag fixedly installed between the lifting plate and the horizontal plate, wherein the telescopic airbag is fixedly connected with an intake pipe and an exhaust pipe connected thereto, and the exhaust pipe is fixedly connected to the nozzle via a connecting pipe, and a one-way valve is fixedly installed in the connecting pipe and the intake pipe.

[0011] In order to facilitate the uniform addition of the biological carbon source into the sewage, further, a storage box is fixedly connected to the lifting plate, and the suction end of the suction pipe extends into the storage box.

[0012] In order to facilitate the collection of floating objects on the mesh plate, further, the horizontal plate is connected with an L-shaped plate, the L-shaped plate is slidably connected with a collection box, the port of the collection box is fixedly connected with a scraper facing the outer wall of the mesh plate, and the L-shaped plate is provided with a pushing part for driving the collection box to move toward the mesh plate.

[0013] In order to automatically push the scraper against the outer wall of the mesh plate, the pushing part further includes a sleeve fixedly connected to the L-shaped plate, a push rod is slidably installed in the sleeve, and the end of the push rod is fixedly connected to the collecting box, wherein a return spring is installed between the collecting box and the inner wall of the L-shaped plate, a connecting pipe extending into the sleeve is fixedly connected to the connecting pipe, an electromagnetic valve is fixedly installed in the connecting pipe, and the input end of the connecting pipe is located between the one-way valve and the exhaust pipe.

[0014] In order to allow the scraper to float up and down, further, a bracket is longitudinally slidably connected to the transverse plate, a floating plate is fixedly connected to the lower end of the bracket, and the bracket is fixedly connected to the L-shaped plate through a connecting rod.

[0015] A water purification method for improving water quality based on a biological carbon source, the operating steps are as follows:

[0016] Step 1: placing sewage, microorganisms and biological carbon sources in an annular tank;

[0017] Step 2: Start the driving motor to make the mesh plate revolve around the support in the annular groove;

[0018] Step 3: During the movement of the mesh plate, the mesh plate is reciprocated up and down in the annular groove;

[0019] Step 4: When the mesh plate moves downward, air is sprayed into the sewage through the nozzle;

[0020] Step 5: When there are a lot of floating objects on the mesh plate, scrape and collect the floating objects on the mesh plate.

[0021] Compared with the prior art, the present invention provides a water purification system for improving water quality based on biological carbon sources, which has the following beneficial effects:

[0022] 1. The water purification system for improving water quality based on biological carbon source drives the horizontal plate to rotate through a driving motor, and the horizontal plate drives the mesh plates on both sides to revolve around the pillars in the annular groove. The mesh plates with mesh holes allow the sewage to flow continuously in the annular groove, thereby making the microorganisms in the sewage more active and enabling the added biological carbon source to be evenly distributed in the sewage.

[0023] 2. The water purification system for improving water quality based on biological carbon sources drives the passive gear to roll on the annular gear through the transverse plate, and the reciprocating screw drives the mesh plate to move up and down in the annular groove. The mesh plate sweeps in the annular groove at different depths, so that the sewage in the annular groove is subjected to different driving forces, thereby forming water waves of different sizes of the sewage in the annular groove, so that the living environment of microorganisms is closer to the natural environment, and the purification effect of microorganisms will be better.

[0024] 3. The water purification system for improving water quality based on biological carbon sources compresses the telescopic airbag through the lifting plate, and the nozzle sprays air into the sewage through the nozzle to increase the oxygen content and fluidity of the sewage, thereby significantly improving the efficiency of sewage purification by microorganisms. Since the mesh plate moves and rises and falls in the annular groove, the mesh plate drives the nozzle and the nozzle to move and rise and fall in the annular groove, so that the air can be sprayed into the sewage more fully, ensuring the uniformity of oxygen content in the sewage.

[0025] 4. The water purification system for improving water quality based on biological carbon source mixes water and biological carbon source and injects them into a storage box. When the suction pipe inhales air, it absorbs the biological carbon source mixture in the storage box and then sprays it into the sewage through the nozzle, so that the added biological carbon source can be evenly distributed in the sewage, thereby enabling the microorganisms to be more evenly absorbed, indirectly improving the efficiency and effect of sewage purification.

[0026] 5. The water purification system for improving water quality based on biological carbon sources can filter floating objects in sewage through mesh plates, thereby improving the purification effect of sewage, and when it is necessary to clean the floating objects accumulated on the mesh plates.

[0027] 6. The water purification system for improving water quality based on biological carbon sources can scrape off floating objects filtered out from the outer wall of the mesh plate through a scraper and store them in a collection box, thereby automatically completing the cleaning work of the mesh plate, making it more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the axonometric structure of a water purification system for improving water quality based on a biological carbon source proposed by the present invention;

[0029] Figure 2 This is a schematic diagram of the axonometric structure of a purification tank for a water purification system for improving water quality based on a biological carbon source proposed by the present invention;

[0030] Figure 3 A schematic diagram of the partial axonometric structure of a water purification system for improving water quality based on a biological carbon source proposed by the present invention Figure 1 ;

[0031] Figure 4 A schematic diagram of the partial axonometric structure of a water purification system for improving water quality based on a biological carbon source proposed by the present invention Figure 2 ;

[0032] Figure 5 This is a schematic diagram of the axonometric structure of a lifting plate of a water purification system for improving water quality based on a biological carbon source proposed by the present invention;

[0033] Figure 6 This is a schematic diagram of the isometric structure of a mesh plate of a water purification system for improving water quality based on a biological carbon source proposed by the present invention;

[0034] Figure 7 This is a schematic diagram of the axonometric structure of a collection box of a water purification system for improving water quality based on a biological carbon source proposed by the present invention.

[0035] In the figure: 1. purification tank; 2. pillar; 3. annular groove; 4. device groove; 5. horizontal plate; 6. mesh plate; 7. lifting plate; 8. driving motor; 9. driving gear; 10. driven gear; 11. reciprocating screw; 12. passive gear; 13. annular gear; 14. guide rod; 15. nozzle; 16. nozzle; 17. telescopic airbag; 18. suction pipe; 19. exhaust pipe; 20. connecting pipe; 21. one-way valve; 22. L-shaped plate; 23. collecting box; 24. scraper; 25. sleeve; 26. push rod; 27. reset spring; 28. connecting pipe; 29. ​​bracket; 30. floating plate; 31. connecting rod; 32. storage box; 33. vertical axis. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0037] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Example

[0038] Reference Figure 1-Figure 7 A water purification system for improving water quality based on biological carbon sources includes a purification tank 1 in the shape of a circle, and also includes: a pillar 2 in the shape of a cylinder, which is fixedly connected to the middle part of the purification tank 1, wherein an annular groove 3 is formed between the outer wall of the pillar 2 and the inner wall of the purification tank 1, and the annular groove 3 is used to store sewage. A device groove 4 is provided in the middle part of the upper end of the pillar 2; a horizontal plate 5 rotatably connected to the upper end of the purification tank 1, wherein two groups of symmetrically arranged mesh plates 6 are installed at the lower end of the horizontal plate 5, and the mesh plates 6 are provided with evenly distributed meshes. The two groups of mesh plates 6 are both arranged in the annular groove 3, and a driving part for driving the horizontal plate 5 to rotate is provided in the device groove 4, and a lifting part for driving the two groups of mesh plates 6 to move up and down is provided on the horizontal plate 5.

[0039] Specifically, when in use, sewage, microorganisms and biological carbon sources are placed in the annular groove 3, and the microorganisms can purify the sewage in the annular groove 3. During this period, the horizontal plate 5 is driven to rotate by the driving part, and the horizontal plate 5 will drive the mesh plates 6 on both sides to revolve around the pillar 2 in the annular groove 3. The mesh plates 6 with mesh holes will make the sewage flow continuously in the annular groove 3, so that the microorganisms in the sewage have better activity and can evenly distribute the added biological carbon source into the sewage. The lifting part can drive the mesh plate 6 to move up and down in the annular groove 3, and the mesh plate 6 will sweep in the annular groove 3 at different depths, so that the sewage in the annular groove 3 is subjected to different driving forces, so that the sewage in the annular groove 3 forms water waves of different sizes, so that the living environment of the microorganisms is closer to the natural environment, and the purification effect of the microorganisms will be better. When the mesh plate 6 is at a higher position, the sewage flow rate at the bottom of the annular groove 3 will be less than the sewage flow rate at the top. Under the action of the flow rate difference, a vortex will be formed in the sewage, so that the contact effect between the microorganisms, sewage and the biological carbon source can be better, so as to significantly improve the sewage purification efficiency. Example

[0040] Reference Figure 1-Figure 4 , which is basically the same as the first embodiment, and further discloses a specific implementation scheme of the driving unit.

[0041] The driving part in the water purification system for improving water quality based on biological carbon source includes a driving motor 8 fixedly installed in the device slot 4, and the output shaft of the driving motor 8 is fixedly installed with a driving gear 9, wherein the lower end of the horizontal plate 5 is fixedly connected with a vertical shaft 33, and the vertical shaft 33 is fixedly installed with a driven gear 10 meshing with the driving gear 9.

[0042] Specifically, during the sewage purification, the drive motor 8 is started, and the drive motor 8 will drive the driven gear 10 to rotate through the driving gear 9, and the driven gear 10 will drive the horizontal plate 5 to rotate through the vertical shaft 33, and the horizontal plate 5 will drive the mesh plates 6 on both sides to revolve around the pillar 2 in the annular groove 3. The mesh plates 6 with mesh holes will make the sewage continue to flow in the annular groove 3, so that the microorganisms in the sewage have better activity and the added biological carbon source can be evenly distributed in the sewage. Example

[0043] Reference Figure 1-Figure 4 , which is basically the same as the second embodiment, and further discloses a specific implementation scheme of the lifting part.

[0044] The lifting part in the water purification system for improving water quality based on biological carbon source includes a reciprocating screw 11 rotatably connected to the upper end of the horizontal plate 5, and the upper end of the horizontal plate 5 is fixedly connected to a guide rod 14 arranged parallel to the reciprocating screw 11, wherein the outer wall of the reciprocating screw 11 is threadedly connected to a lifting plate 7 slidably connected to the guide rod 14, the mesh plate 6 is fixedly installed on the lifting plate 7, the lower end of the reciprocating screw 11 is fixedly installed with a passive gear 12, and the inner wall of the device groove 4 is fixedly installed with a ring gear 13 meshing with the passive gear 12.

[0045] When the cross plate 5 rotates, the cross plate 5 will drive the passive gear 12 at the lower end of the reciprocating screw 11 to roll on the annular gear 13, and the passive gear 12 will drive the reciprocating screw 11 to rotate, and the reciprocating screw 11 will drive the lifting plate 7 to slide back and forth along the outer wall of the guide rod 14, and drive the mesh plate 6 to move up and down in the annular groove 3, and the mesh plate 6 will sweep in the annular groove 3 at different depths, so that the sewage in the annular groove 3 is subjected to different sizes of driving forces, so that the sewage in the annular groove 3 forms water waves of different sizes, so that the living environment of the microorganisms is closer to the natural environment, and the purification effect of the microorganisms will be better. When the mesh plate 6 is positioned higher, the sewage flow rate at the bottom of the annular groove 3 will be less than the sewage flow rate at the top. Under the action of the flow rate difference, a vortex will be formed in the sewage, so that the contact effect between the microorganisms, sewage and the biological carbon source can be better, so as to significantly improve the sewage purification efficiency. Example

[0046] Reference Figure 1-Figure 6 , which is basically the same as Example 3, and further, a specific implementation plan for aerating the sewage is specifically added.

[0047] A nozzle 15 is fixedly connected to the bottom of the mesh plate 6, a nozzle 16 is fixedly installed on the outer wall of the nozzle 15, and an air supply part for supplying air to the nozzle 16 is provided on the horizontal plate 5, and the air supply part includes a telescopic air bag 17 fixedly installed between the lifting plate 7 and the horizontal plate 5, wherein the telescopic air bag 17 is fixedly connected to an air intake pipe 18 and an exhaust pipe 19 connected thereto, and the exhaust pipe 19 is fixedly connected to the nozzle 15 via a connecting pipe 20, and a one-way valve 21 is fixedly installed in both the connecting pipe 20 and the air intake pipe 18.

[0048] When the lifting plate 7 moves downward, the lifting plate 7 will compress the telescopic airbag 17, and the telescopic airbag 17 will blow air to the nozzle 15 through the exhaust pipe 19 and the connecting pipe 20, and the nozzle 15 will spray air into the sewage through the nozzle 16 to increase the oxygen content and fluidity of the sewage, thereby significantly improving the efficiency of sewage purification by microorganisms. Since the mesh plate 6 will move and rise and fall in the annular groove 3, the mesh plate 6 will drive the nozzle 15 and the nozzle 16 to move and rise and fall in the annular groove 3, so that the air can be sprayed into the sewage more fully, ensuring the uniformity of oxygen content in the sewage. When the lifting plate 7 moves upward, the lifting plate 7 will stretch the telescopic airbag 17, and the telescopic airbag 17 will absorb air through the suction pipe 18.

[0049] A storage box 32 is fixedly connected to the lifting plate 7 , and the suction end of the suction pipe 18 extends into the storage box 32 .

[0050] Specifically, when it is necessary to add a biological carbon source, water and the biological carbon source are mixed and injected into the storage box 32. When the suction pipe 18 inhales air, the suction pipe 18 will absorb the biological carbon source mixture in the storage box 32, and then spray it into the sewage through the nozzle 16, so that the added biological carbon source can be evenly distributed in the sewage, thereby enabling the microorganisms to be more evenly absorbed, indirectly improving the efficiency and effect of sewage purification. Similarly, when it is necessary to add microorganisms, water and microorganisms can be mixed and injected into the storage box 32, and the microorganisms can be evenly distributed in the sewage in the same way. Example

[0051] Reference Figure 3-Figure 5 as well as Figure 7 , which is basically the same as the fourth embodiment, and further, a specific implementation plan for cleaning the mesh plate 6 is specifically added.

[0052] The above-mentioned transverse plate 5 is connected to an L-shaped plate 22, and a collection box 23 for storing floating objects is slidably connected to the L-shaped plate 22. A scraper 24 facing the outer wall of the mesh plate 6 is fixedly connected to the port of the collection box 23. The L-shaped plate 22 is provided with a pushing portion for driving the collection box 23 to move toward the mesh plate 6. The pushing portion includes a sleeve 25 fixedly connected to the L-shaped plate 22, and a push rod 26 is slidably installed in the sleeve 25. The end of the push rod 26 is fixedly connected to the collection box 23, wherein a return spring 27 is installed between the collection box 23 and the inner wall of the L-shaped plate 22, and a connecting pipe 28 extending into the sleeve 25 is fixedly connected to the connecting pipe 20, and an electromagnetic valve is fixedly installed in the connecting pipe 28, and the input end of the connecting pipe 28 is located between the one-way valve 21 and the exhaust pipe 19.

[0053] During the use of the mesh plate 6, the mesh plate 6 can filter floating objects in the sewage, thereby improving the sewage purification effect. When it is necessary to clean the floating objects accumulated on the mesh plate 6, the solenoid valve in the connecting pipe 28 is opened. When the connecting pipe 20 is exhausted, the connecting pipe 20 will also exhaust the gas into the connecting pipe 28, and then into the sleeve 25 through the connecting pipe 28. The push rod 26 will drive the collection box 23 to approach the outer wall of the mesh plate 6 under the action of air pressure, and make the scraper 24 press against the outer wall of the mesh plate 6, so that the mesh plate 6 When moving downward, the scraper 24 can scrape off the floating objects filtered out by the outer wall of the mesh plate 6 and store them in the collecting box 23, so that the automatic cleaning work of the mesh plate 6 can be automatically completed, which is more convenient to use. When the mesh plate 6 moves upward, the telescopic airbag 17 will inhale air through the suction pipe 18, and the excess gas in the sleeve 25 will flow back into the telescopic airbag 17 through the connecting pipe 28, and the reset spring 27 will drive the collecting box 23 and the scraper 24 away from the mesh plate 6, so as to prevent the floating objects on the mesh plate 6 from being scraped off into the sewage by the scraper 24.

[0054] A bracket 29 is longitudinally slidably connected to the transverse plate 5 , a floating plate 30 is fixedly connected to the lower end of the bracket 29 , and the bracket 29 is fixedly connected to the L-shaped plate 22 via a connecting rod 31 .

[0055] Specifically, when the mesh plate 6 moves along the annular groove 3, an irregular vortex will form on the water surface on the side of the mesh plate 6 away from the collecting box 23. The principle is similar to the vortex formed at the tail of a ship when it is sailing in the water. The irregular vortex will cause the float 30 to float up and down on the sewage surface, and drive the L-shaped plate 22 to float up and down through the bracket 29 and the connecting rod 31. The L-shaped plate 22 will drive the collecting box 23 and the scraper 24 to float up and down. On the one hand, it can improve the efficiency of the scraper 24 in scraping off floating objects, and on the other hand, it can make the floating objects slide into the collecting box 23 more efficiently.

[0056] A water purification method for improving water quality based on a biological carbon source, the operating steps are as follows:

[0057] Step 1: placing sewage, microorganisms and biological carbon sources in the annular tank 3;

[0058] Step 2: Start the driving motor 8 to make the mesh plate 6 revolve around the support 2 in the annular groove 3;

[0059] Step 3: During the movement of the mesh plate 6, the mesh plate 6 is reciprocated up and down in the annular groove 3;

[0060] Step 4: When the mesh plate 6 moves downward, air is sprayed into the sewage through the nozzle 16;

[0061] Step 5: When there are a lot of floating objects on the mesh plate 6 , scrape and collect the floating objects on the mesh plate 6 .

[0062] The water purification system for improving water quality based on biological carbon source, when in use, places sewage, microorganisms and biological carbon source in the annular groove 3, and the microorganisms can purify the sewage in the annular groove 3. During this period, the driving motor 8 is started, and the driving motor 8 will drive the driven gear 10 to rotate through the driving gear 9, and the driven gear 10 will drive the horizontal plate 5 to rotate through the vertical axis 33, and the horizontal plate 5 will drive the mesh plates 6 on both sides to revolve around the pillar 2 in the annular groove 3, and the mesh plates 6 with mesh holes will make the sewage continue to flow in the annular groove 3, so that the microorganisms in the sewage have better activity and can make the added biological carbon source evenly distributed in the sewage.

[0063] When the cross plate 5 rotates, the cross plate 5 will drive the passive gear 12 at the lower end of the reciprocating screw 11 to roll on the annular gear 13, and the passive gear 12 will drive the reciprocating screw 11 to rotate, and the reciprocating screw 11 will drive the lifting plate 7 to slide back and forth along the outer wall of the guide rod 14, and drive the mesh plate 6 to move up and down in the annular groove 3, and the mesh plate 6 will sweep in the annular groove 3 at different depths, so that the sewage in the annular groove 3 is subjected to different sizes of driving forces, so that the sewage in the annular groove 3 forms water waves of different sizes, so that the living environment of the microorganisms is closer to the natural environment, and the purification effect of the microorganisms will be better. When the mesh plate 6 is positioned higher, the sewage flow rate at the bottom of the annular groove 3 will be less than the sewage flow rate at the top. Under the action of the flow rate difference, a vortex will be formed in the sewage, so that the contact effect between the microorganisms, sewage and the biological carbon source can be better, so as to significantly improve the sewage purification efficiency.

[0064] When the lifting plate 7 moves downward, the lifting plate 7 will compress the telescopic airbag 17, and the telescopic airbag 17 will blow air to the nozzle 15 through the exhaust pipe 19 and the connecting pipe 20, and the nozzle 15 will spray air into the sewage through the nozzle 16 to increase the oxygen content and fluidity of the sewage, thereby significantly improving the efficiency of sewage purification by microorganisms. Since the mesh plate 6 will move and rise and fall in the annular groove 3, the mesh plate 6 will drive the nozzle 15 and the nozzle 16 to move and rise and fall in the annular groove 3, so that the air can be sprayed into the sewage more fully, ensuring the uniformity of oxygen content in the sewage. When the lifting plate 7 moves upward, the lifting plate 7 will stretch the telescopic airbag 17, and the telescopic airbag 17 will absorb air through the suction pipe 18.

[0065] During the use of the mesh plate 6, the mesh plate 6 can filter floating objects in the sewage, thereby improving the sewage purification effect. When it is necessary to clean the floating objects accumulated on the mesh plate 6, the solenoid valve in the connecting pipe 28 is opened. When the connecting pipe 20 is exhausted, the connecting pipe 20 will also exhaust the gas into the connecting pipe 28, and then into the sleeve 25 through the connecting pipe 28. The push rod 26 will drive the collection box 23 to approach the outer wall of the mesh plate 6 under the action of air pressure, and make the scraper 24 press against the outer wall of the mesh plate 6, so that the mesh plate 6 When moving downward, the scraper 24 can scrape off the floating objects filtered out by the outer wall of the mesh plate 6 and store them in the collecting box 23, so that the automatic cleaning work of the mesh plate 6 can be automatically completed, which is more convenient to use. When the mesh plate 6 moves upward, the telescopic airbag 17 will inhale air through the suction pipe 18, and the excess gas in the sleeve 25 will flow back into the telescopic airbag 17 through the connecting pipe 28, and the reset spring 27 will drive the collecting box 23 and the scraper 24 away from the mesh plate 6, so as to prevent the floating objects on the mesh plate 6 from being scraped off into the sewage by the scraper 24.

[0066] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.

Claims

1. A water purification system for improving water quality based on a biological carbon source, comprising a purification tank (1) in a circular shape, characterized in that: Also includes: The support column (2) is fixedly connected to the middle part of the purification tank (1). Wherein, an annular groove (3) is formed between the outer wall of the support (2) and the inner wall of the purification tank (1), and a device groove (4) is provided in the middle of the upper end of the support (2); Rotate the horizontal plate (5) connected to the upper end of the purification tank (1), Wherein, two groups of symmetrically arranged mesh plates (6) are installed at the lower end of the horizontal plate (5), and the two groups of mesh plates (6) are arranged in the annular groove (3). A driving part for driving the horizontal plate (5) to rotate is arranged in the device groove (4), and a lifting part for driving the two groups of mesh plates (6) to move up and down is arranged on the horizontal plate (5); The driving part comprises a driving motor (8) fixedly mounted in the device slot (4), and the output shaft of the driving motor (8) is fixedly mounted with a driving gear (9); wherein the lower end of the horizontal plate (5) is fixedly connected with a vertical shaft (33), and the vertical shaft (33) is fixedly mounted with a driven gear (10) meshingly connected with the driving gear (9); the lifting part comprises a reciprocating screw (11) rotatably connected to the upper end of the horizontal plate (5), and the upper end of the horizontal plate (5) is fixedly connected with a guide rod (14) arranged parallel to the reciprocating screw (11), wherein the outer wall of the reciprocating screw (11) is threadedly connected with a lifting plate (7) slidably connected with the guide rod (14), and the mesh plate (6) is fixedly mounted on the lifting plate (7). The plate (7) is provided with a passive gear (12) fixedly mounted at the lower end of the reciprocating screw (11), and a ring gear (13) meshingly connected to the passive gear (12) is fixedly mounted on the inner wall of the device groove (4); a nozzle (15) is fixedly connected to the bottom of the mesh plate (6), a nozzle (16) is fixedly mounted on the outer wall of the nozzle (15), and an air supply section for supplying air to the nozzle (16) is provided on the horizontal plate (5); the air supply section comprises a telescopic air bag (17) fixedly mounted between the lifting plate (7) and the horizontal plate (5), wherein the telescopic air bag (17) is fixedly connected to an air intake pipe (18) and an air exhaust pipe (19) which are in communication with the telescopic air bag, and the air exhaust pipe (19) is connected to the nozzle through a connecting pipe (20). The connecting pipe (20) and the suction pipe (18) are fixedly connected, and a one-way valve (21) is fixedly installed in each of the connecting pipe (20) and the suction pipe (18); a storage box (32) is fixedly connected to the lifting plate (7), and the suction end of the suction pipe (18) extends into the storage box (32); an L-shaped plate (22) is connected to the horizontal plate (5), and a collection box (23) is slidably connected to the L-shaped plate (22), and a scraper (24) facing the outer wall of the mesh plate (6) is fixedly connected to the port of the collection box (23), and a pushing part for driving the collection box (23) to move toward the mesh plate (6) is provided on the L-shaped plate (22); the pushing part comprises a sleeve (25) fixedly connected to the L-shaped plate (22), and the sleeve (2 5) is slidably mounted with a push rod (26), the end of which is fixedly connected to the collection box (23), wherein a return spring (27) is mounted between the collection box (23) and the inner wall of the L-shaped plate (22); a connecting pipe (28) extending into the sleeve (25) is fixedly connected to the connecting pipe (20), a solenoid valve is fixedly mounted in the connecting pipe (28), and the input end of the connecting pipe (28) is located between the one-way valve (21) and the exhaust pipe (19); a bracket (29) is longitudinally slidably mounted on the transverse plate (5), a floating plate (30) is fixedly connected to the lower end of the bracket (29), and the bracket (29) is fixedly connected to the L-shaped plate (22) via a connecting rod (31).

2. A method for improving water quality and purifying water based on a biological carbon source, comprising a system for improving water quality and purifying water based on a biological carbon source as claimed in claim 1, characterized in that: The steps are as follows: Step 1: placing sewage, microorganisms and biological carbon sources in an annular tank (3); Step 2: starting the driving motor (8) to make the mesh plate (6) revolve around the support (2) in the annular groove (3); Step 3: While the mesh plate (6) is moving, the mesh plate (6) is moved up and down in the annular groove (3); Step 4: When the mesh plate (6) moves downward, air is sprayed into the sewage through the nozzle (16); Step 5: When there are a lot of floating objects on the mesh plate (6), scrape and collect the floating objects on the mesh plate (6).

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