Sewage deep denitrification equipment

Abstract

The utility model relates to the technical field of sewage treatment, in particular to sewage deep denitrification equipment which comprises a treatment pond, a cover plate is arranged at the top end of the treatment pond, a water inlet is formed in the surface of the cover plate, a coarse filter screen is fixedly connected to an inner cavity of the treatment pond, a motor is arranged on the surface of the cover plate, and a shaft rod is fixedly connected to the bottom end of the motor. The surface of the shaft rod is fixedly connected with a stirring paddle, the bottom end of the shaft rod is sleeved with a fixing plate, inserting plates are inserted into the two sides of the surface of the fixing plate, one end of each inserting plate is fixedly connected with a scraping plate, and the scraping plates abut against the surface of the coarse filter screen; the sewage treatment device has the beneficial effects that the motor and the stirring paddle are arranged to rotate to drive water flow in the coarse filtering bin to disturb, deposited particulate matter is suspended in water again, the water flow speed and the sewage treatment effect are improved, the elastic scraping plate is arranged, cakes and particles on the surface of the coarse filtering net are scraped and moved, the surface of the coarse filtering net is prevented from being blocked, and the service life of the coarse filtering net is prolonged. And a baffle block and a limiting plate are arranged, so that the scraping plate can be quickly disassembled and replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to sewage deep denitrification equipment. Background Art

[0002] Most cities and towns in my country have basically achieved effective collection and centralized treatment of domestic sewage. Sewage often contains a large amount of nitrogen, which requires denitrification treatment.

[0003] The Chinese utility model patent with the authorization announcement number of "CN217895398U" is specifically "deep denitrification equipment for sewage". Its specific embodiment records that "a vertical partition is provided inside the treatment pool, a nitrification bin is provided on one side of the partition, and a coarse filtration bin and a denitrification bin are provided on the other side of the partition. The coarse filtration bin and the denitrification bin are stacked up and down and separated by a partition. A drainage port connecting the coarse filtration bin and the nitrification bin is provided on the partition, and a drainage hole connecting the nitrification bin and the denitrification bin is provided at the lower end of the partition. A water inlet is provided on the top of the coarse filtration bin, a water outlet is provided on one side of the denitrification bin, an exhaust pipe is connected to the denitrification bin, a coarse filtration screen is placed in the coarse filtration bin, a biological filter material box is provided in the nitrification bin, and biological filter material is placed in the biological filter material box. An aeration pipe is provided in the nitrification bin, and sewage is discharged into the coarse filtration bin from the water inlet. Large pieces of solid matter in the sewage are intercepted by the coarse filtration screen in the coarse filtration bin, and then the sewage flows into the nitrification bin through the drainage port."

[0004] However, in the above device, sewage flows from the sewage outlet to the coarse filter tank, and the suspended matter and sediment in the sewage will gradually settle and accumulate on the surface of the coarse filter, causing the surface of the coarse filter to be blocked, reducing the filtering effect, and the accumulation of sediment can easily hinder the flow of sewage, resulting in a decrease in water flow rate and even blockage, thereby reducing the sewage treatment effect. Utility Model Content

[0005] The purpose of the utility model is to provide a sewage deep denitrification device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sewage deep denitrification device, comprising a treatment tank, a cover plate is provided at the top of the treatment tank, a water inlet is provided on the surface of the cover plate, a coarse filter screen is fixedly connected to the inner cavity of the treatment tank, a motor is provided on the surface of the cover plate, a shaft rod is fixedly connected to the bottom end of the motor, a stirring paddle is fixedly connected to the surface of the shaft rod, a fixed plate is sleeved on the bottom end of the shaft rod, plug plates are inserted on both sides of the surface of the fixed plate, a scraper is fixedly connected to one end of the plug plate, the scraper is pressed against the surface of the coarse filter screen, a receiving groove is provided on one side of the scraper, and the inner groove wall of the receiving groove penetrates the outer wall of the scraper to embed and install the filter screen plate.

[0007] Preferably, a shaft hole is formed on the surface of the cover plate, the shaft rod penetrates through the surface of the shaft hole, and a rubber groove is formed on the surface of one end of the shaft hole away from the water inlet.

[0008] Preferably, the rubber groove is an annular groove, a rubber ring is fixedly connected to the surface of the rubber groove, the rubber ring is in an annular plate-like structure, and the surface of the fixing plate is fixedly connected to the other end of the rubber ring.

[0009] Preferably, the fixing plate is in a circular plate-like structure with a "C"-shaped cross-section. On both sides of the surface of one end of the fixing plate away from the rubber groove, there are inserted slots, the inserted slots are in a "T"-shaped groove, the inserted plate is inserted on the surface of the inserted slot, the inserted plate is in a "T"-shaped plate-like structure, and a limiting groove is formed on the surface of the inserted plate, and the limiting groove is a square groove.

[0010] Preferably, a limiting plate is fixedly connected to the surface of the inserted slot, the limiting plate is in a square block-like structure, the height of the limiting plate is less than the depth of the inserted slot, the surface of the limiting groove is penetrated by the limiting plate, a blocking groove is formed on the surface of the limiting plate, the blocking groove is a square groove, and a rubber block is fixedly connected to the center position of the surface of the blocking groove.

[0011] Preferably, blocking blocks are inserted on both sides of the surface of the rubber block, the blocking blocks are in a square block-like structure, one end of the blocking block away from the blocking groove is provided with an inclined surface, and the blocking block presses against the surface of the inserted plate to limit the inserted plate.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] For the sewage deep denitrification equipment proposed by the present utility model, a motor and a stirring paddle are set to rotate to drive the water flow in the coarse filtration chamber to be disturbed, so that the deposited particulate matter is resuspended in the water, improving the water flow velocity and the sewage treatment effect. An elastic scraper is set to realize scraping and displacing the caking and particles on the surface of the coarse filter screen, avoiding blockage on the surface of the coarse filter screen and improving the filtering effect. A blocking block and a limiting plate are set to realize the quick disassembly and replacement of the scraper, and the operation is convenient and simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the present utility model;

[0015] Figure 2 is a semi-sectional schematic structural diagram of the present utility model;

[0016] Figure 3 is Figure 2 a schematic enlarged view of the structure at A in

[0017] Figure 4 is a schematic structural diagram of the scraper of the present utility model;

[0018] Figure 5 is a schematic structural diagram of the scraper of the present utility model.

[0019] In the figure: 1. treatment tank; 2. cover plate; 3. motor; 4. shaft; 5. stirring paddle; 6. scraper; 61. storage tank; 62. filter screen; 7. coarse filter; 8. rubber groove; 9. rubber ring; 10. fixing plate; 11. slot; 12. plug plate; 13. limit plate; 14. limit groove; 15. rubber block; 16. stopper; 17. stopper groove; 18. water inlet; 19. shaft hole. DETAILED DESCRIPTION

[0020] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Embodiment 1

[0022] See also Figure 1 , 2 5. The utility model provides a technical solution: a sewage deep denitrification device, including a treatment tank 1, a cover plate 2 is provided at the top of the treatment tank 1, a water inlet 18 is provided on the surface of the cover plate 2, a coarse filter screen 7 is fixedly connected to the inner cavity of the treatment tank 1, a motor 3 is provided on the surface of the cover plate 2, a shaft rod 4 is fixedly connected to the bottom end of the motor 3, a stirring paddle 5 is fixedly connected to the surface of the shaft rod 4, a fixed plate 10 is sleeved on the bottom end of the shaft rod 4, plug plates 12 are plugged on both sides of the surface of the fixed plate 10, a scraper 6 is fixedly connected to one end of the plug plate 12, the scraper 6 is pressed against the surface of the coarse filter screen 7, the motor 3 and the stirring paddle 5 are arranged to rotate to drive the water flow disturbance in the coarse filter bin, and the The deposited particulate matter is re-suspended in the water to increase the water flow rate and sewage treatment effect. An elastic scraper 6 is provided to scrape and displace the lumps and particles on the surface of the coarse filter 7. A receiving groove 61 is provided on one side of the scraper 6. The inner groove wall of the receiving groove 61 penetrates the outer wall of the scraper 6 and is embedded in the filter screen plate 62. When the scraper 6 rotates and scrapes the particles on the surface of the coarse filter 7, the particles will be collected into the receiving groove 61 and intercepted by the filter screen plate 62. The sewage passes through at a uniform speed to avoid blockage on the surface of the coarse filter 7, thereby improving the filtering effect. A block 16 and a limit plate 13 are provided to realize the rapid disassembly and replacement of the scraper 6, and the operation is convenient and simple.

[0023] Embodiment 2

[0024] See also Figure 3, on the basis of the first embodiment, in order to ensure that the scraper 6 always closely adheres to the surface of the coarse filter screen 7, a shaft hole 19 is provided on the surface of the cover plate 2. The shaft rod 4 passes through the surface of the shaft hole 19. A rubber groove 8 is provided on the surface of the shaft hole 19 at the end away from the water inlet 18. The rubber groove 8 is an annular groove. A rubber ring 9 is fixedly connected to the surface of the rubber groove 8. The rubber ring 9 is in the shape of an annular plate. The surface of the fixing plate 10 is fixedly connected to the other end of the rubber ring 9. The fixing plate 10 is in the shape of a circular plate with a "C"-shaped cross-section. On both sides of the surface of the fixing plate 10 away from the rubber groove 8, there are insertion slots 11. The insertion slots 11 are in the shape of a "T"-shaped groove. An insertion plate 12 is inserted into the surface of the insertion slots 11. The insertion plate 12 is in the shape of a "T"-shaped plate. A limiting groove 14 is provided on the surface of the insertion plate 12. The limiting groove 14 is a square groove.

[0025] The rubber groove 8 and the rubber ring 9 are fixedly connected, and the rubber ring 9 is in a compressed state. When one end of the rubber ring 9 is fixedly connected to the fixing plate 10, there is a certain distance gap between the fixing plate 10 and the bottom end of the shaft rod 4. After the rubber ring 9 is squeezed by force, the fixing plate 10 has sufficient up and down movement space to move, so that the scraper 6 on the surface of the fixing plate 10 always closely adheres to the surface of the coarse filter screen 7, cleaning the surface of the coarse filter screen 7 to prevent blockage.

[0026] The third embodiment

[0027] Please refer to Figure 4 , on the basis of the second embodiment, in order to achieve the disassembly and replacement of the scraper 6, a limiting plate 13 is fixedly connected to the surface of the insertion slot 11. The limiting plate 13 is in the shape of a square block. The height of the limiting plate 13 is less than the depth of the insertion slot 11. The surface of the limiting groove 14 is penetrated by the limiting plate 13. A blocking groove 17 is provided on the surface of the limiting plate 13. The blocking groove 17 is a square groove. A rubber block 15 is fixedly connected to the center position of the surface of the blocking groove 17. On both sides of the surface of the rubber block 15, there are inserted blocking blocks 16. The blocking blocks 16 are in the shape of square blocks. One end of the blocking block 16 away from the blocking groove 17 is provided with an inclined surface. The blocking block 16 presses against the surface of the insertion plate 12 to limit the insertion plate 12.

[0028] The height of the limiting plate 13 is less than the depth of the insertion slot 11 to prevent one end of the limiting plate 13 from exceeding the height of the fixing plate 10 and thus lifting the scraper 6 away from the surface of the coarse filter screen 7. One end of the blocking block 16 is provided with an inclined surface. When the insertion plate 12 is inserted into the surface of the insertion slot 11, one end of the inclined surface of the blocking block 16 is squeezed by force, causing the rubber block 15 to deform and be in a compressed state, driving the blocking block 16 to slide into the blocking groove 17. When the blocking block 16 passes through the surface of the limiting groove 14, the rubber block 15 loses the extrusion and returns to its original state from the compressed state, ejecting the blocking block 16 and pressing it against the surface of the insertion plate 12, thus realizing the quick disassembly and installation of the insertion plate 12 and the scraper 6.

[0029] In actual use, first, the plug plate 12 is inserted into the slot 11, the limit plate 13 passes through the limit groove 14 on the surface of the plug plate 12, and the stopper 16 is pressed against the surface of the plug plate 12. At this time, the plug plate 12 and the scraper 6 are fixed, and then the fixed plate 10 on the surface of the shaft rod 4 is pressed against the surface of the coarse filter screen 7, and the scraper 6 is tightly attached to the surface of the coarse filter screen 7. The sewage enters the coarse filter bin in the treatment tank 1 from the water inlet 18, and the motor 3 is started. The motor 3 drives the shaft rod 4 to rotate, and the shaft rod 4 drives the stirring paddle 5 and the fixed plate 10 to rotate. The stirring paddle 5 stirs the sewage, re-suspends part of the sediment, and re-participates in the filtration process. The fixed plate 10 drives the scraper The plate 6 rotates tightly against the surface of the coarse filter screen 7. The scraper 6 can automatically adapt to the slight ups and downs and deformation of the surface of the coarse filter screen 7 through the up and down bouncing of the rubber ring 9, and scrape and clean the surface of the coarse filter screen 7. When the scraper 6 rotates and scrapes and cleans the surface of the coarse filter screen 7, the particles will be collected into the storage groove 61, and the particles will be intercepted by the filter screen plate 62, and the sewage will pass through at a uniform speed. When the scraper 6 needs to be disassembled and replaced, press the block blocks 16 on both sides by hand. The block blocks 16 squeeze the rubber block 15 to produce deformation, and the block groove 17 shrinks, and then the limit plate 13 is pulled out of the limit groove 14. After the plug plate 12 is detached from the slot 11, take out the scraper 6, replace it and clean it.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sewage deep denitrification device, comprising a treatment tank (1), a cover plate (2) is provided at the top of the treatment tank (1), a water inlet (18) is provided on the surface of the cover plate (2), and the device is characterized in that: A coarse filter screen (7) is fixedly connected to the inner cavity of the treatment tank (1). A motor (3) is arranged on the surface of the cover plate (2). The bottom end of the motor (3) is fixedly connected to a shaft rod (4). Stirring paddles (5) are fixedly connected to the surface of the shaft rod (4). A fixing plate (10) is sleeved on the bottom end of the shaft rod (4). Plug plates (12) are inserted on both sides of the surface of the fixing plate (10). One end of the plug plate (12) is fixedly connected to a scraping plate (6). The scraping plate (6) presses against the surface of the coarse filter screen (7). A storage groove (61) is formed on one side of the scraping plate (6). A filter screen plate (62) is embedded and installed through the outer wall of the scraping plate (6) on the inner groove wall of the storage groove (61).

2. A sewage deep denitrification equipment according to claim 1, characterized in that: A shaft hole (19) is formed on the surface of the cover plate (2). The shaft rod (4) penetrates through the surface of the shaft hole (19). A rubber groove (8) is formed on the surface of one end of the shaft hole (19) away from the water inlet (18).

3. A sewage deep denitrification equipment according to claim 2, characterized in that: The rubber groove (8) is an annular groove. A rubber ring (9) is fixedly connected to the surface of the rubber groove (8). The rubber ring (9) is in an annular plate-like structure. The surface of the fixing plate (10) is fixedly connected to the other end of the rubber ring (9).

4. A sewage deep denitrification equipment according to claim 2, characterized in that: The fixing plate (10) is in a circular plate-like structure with a "C"-shaped cross-section. Slots (11) are formed on both sides of the surface of one end of the fixing plate (10) away from the rubber groove (8). The slots (11) are in a "T"-shaped groove. The plug plates (12) are inserted on the surface of the slots (11). The plug plates (12) are in a "T"-shaped plate-like structure. A limiting groove (14) is formed on the surface of the plug plate (12). The limiting groove (14) is a square groove.

5. A sewage deep denitrification equipment according to claim 4, characterized in that: A limiting plate (13) is fixedly connected to the surface of the slot (11). The limiting plate (13) is in a square block-like structure. The height of the limiting plate (13) is less than the depth of the slot (11). The surface of the limiting groove (14) is penetrated by the limiting plate (13). A retaining groove (17) is formed on the surface of the limiting plate (13). The retaining groove (17) is a square groove. A rubber block (15) is fixedly connected to the center position of the surface of the retaining groove (17).

6. A sewage deep denitrification equipment according to claim 5, characterized in that: Blocking blocks (16) are inserted on both sides of the surface of the rubber block (15). The blocking blocks (16) are in a square block-like structure. One end of the blocking block (16) away from the retaining groove (17) is provided with an inclined surface. The blocking block (16) presses against the surface of the plug plate (12) to limit the plug plate (12).

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