A sewage treatment equipment for agricultural and livestock product production

Abstract

The invention relates to the technical field of sewage treatment, and discloses a sewage treatment device for agricultural and animal husbandry product production, comprising an air flotation box, wherein two groups of side plates are arranged inside the air flotation box along the length direction thereof, a plurality of partitions are arranged between the two groups of side plates, a gap is arranged between the partition and the bottom surface inside the air flotation box, an air flotation cavity is formed between two adjacent partitions, and a baffle is vertically arranged inside the air flotation cavity; the sewage treatment device for agricultural and animal husbandry product production can slow down the fluctuation of liquid in multiple directions by arranging a plurality of air flotation cavities in the air flotation box, and arranging baffles and grid plates in the air flotation cavity, so as to prevent suspended matter from being dispersed by water waves, facilitate the floating of suspended matter and stably float on the liquid surface, so as to subsequently clean up the scum formed by the suspended matter, and at the same time, the baffle and the partition are combined with the air pipe, so as to facilitate the floating of suspended matter after combining with microbubbles, which is beneficial to improving the floating effect of suspended matter in sewage.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, in particular to sewage treatment equipment for agricultural and animal husbandry product production. Background Art

[0002] Agricultural livestock breeding categories include cattle, pigs, chickens, ducks, etc. After livestock products are raised and marketed, they need to be slaughtered and processed. During the production process of livestock products, a large amount of sewage will be generated. The sewage mainly contains impurities such as blood, grease, hair, etc. The sewage needs to be treated to meet the requirements for discharge or reuse.

[0003] The main treatment processes for wastewater generated by livestock product production include using grating screens to remove larger suspended solids and impurities such as hair, using flotation machines or sedimentation tanks to further remove suspended matter in the wastewater, using anaerobic hydrolysis tanks to degrade organic matter in the wastewater, and using bioreactors to enrich sludge.

[0004] When the existing flotation machine is used to treat the sewage generated by the production of livestock products, with the continuous flow of sewage and the continuous movement of the scraper, the liquid level in the flotation tank fluctuates greatly, making it difficult for suspended matter to float stably on the liquid surface. The suspended matter is affected by the water waves, and the microbubbles on its surface are easily separated, making it difficult for the suspended matter to float to the liquid surface, and the effect of sewage treatment by the flotation machine is not good. Summary of the invention

[0005] In order to solve the problem that when the above existing air flotation machine treats the sewage generated by the production of animal husbandry products, the liquid level in the air flotation tank fluctuates greatly, and it is difficult for suspended matter to float stably on the liquid surface and it is difficult for suspended matter to float to the liquid surface, the present invention is implemented through the following technical scheme: A sewage treatment equipment for agricultural animal husbandry product production, including an air flotation box, two groups of side plates are arranged inside the air flotation box along its length direction, a plurality of partitions are arranged between the two groups of side plates, a gap is arranged between the partition and the bottom surface of the inside of the air flotation box, and an air flotation cavity is formed between two adjacent partitions, and a baffle is vertically arranged inside the air flotation cavity, and the bottom edge and two side edges of the baffle are respectively sealed and connected with the bottom surface of the inside of the air flotation box and the inner side surfaces of the two groups of side plates;

[0006] The surfaces of the partition plate and the baffle plate are both provided with grid plates, the grid plates are perpendicular to the partition plate and the baffle plate, and the bottom of the air flotation cavity is provided with an air flotation tube, and the air flotation tube is located on one side of the baffle plate close to the liquid inlet pipe of the air flotation tank;

[0007] The side of the side plate away from the air flotation chamber is a sewage discharge chamber. A scraper is arranged above the air flotation chamber. The scraper moves along the width direction of the air flotation box, and the movement of the scraper is used to push the scum into the sewage discharge chamber.

[0008] Furthermore, an aeration chamber is provided on one side of the air flotation tank near the liquid inlet pipe, the bottom of the aeration chamber is connected to the adjacent air flotation chamber, and an air pipe is provided at the bottom of the aeration chamber;

[0009] The sewage discharge cavity extends to both sides of the aeration cavity, and a scraper is also provided above the aeration cavity.

[0010] Furthermore, the air pipe has several groups, the upper surface of the air pipe is provided with a plurality of branch pipes, and a rotating disk is rotatably mounted on the surface of the branch pipe;

[0011] A plurality of nozzles are installed circumferentially inside the turntable. The nozzles are connected to the branch pipes through hoses. Nozzles are provided on the side surfaces of the nozzles. The gas ejected from the nozzles is used to drive the turntable to rotate.

[0012] Furthermore, the nozzle is installed inside the turntable so as to rotate up and down, an L-shaped adjustment rod is fixedly installed at one end of the nozzle located inside the turntable, and a return spring is provided between the nozzle and the inner surface of the turntable;

[0013] An adjusting ring is fixedly mounted on the upper end surface of the branch pipe, and a corrugated step surface is arranged on the outer ring surface of the adjusting ring. The free end of the adjusting rod is always in contact with and matched with the step surface.

[0014] Furthermore, a driving box is provided on both sides of the length direction of the air flotation box, a support block is slidably mounted on the upper surface of the driving box, a support rod is fixedly mounted between the two support blocks, a plurality of groups of support rods are fixedly mounted on the surface of the support rod, a support plate is fixedly mounted on the lower end of the support rod, and connecting plates are fixedly mounted on both ends of the lower surface of the support plate;

[0015] The cross section of the scraper is C-shaped, shaft rods are fixedly installed at both ends of the scraper, and the connecting plate is rotatably connected to the shaft rods.

[0016] Furthermore, the scraper is provided with two inner cavities, and two slots are opened inside the scraper. A scraping roller is rotatably installed inside the slot. The scraping roller is provided with a plurality of scraping grooves. When the scraping roller rotates, the scraping grooves are used to scrape the scum into the corresponding inner cavity.

[0017] Furthermore, a driving gear is rotatably mounted on the surface of the connecting plate at at least one end, and an adjusting gear is provided on the surface of the shaft, and the adjusting gear is meshed with the driving gear;

[0018] A gear part is fixedly installed at one end of the scraper roller close to the driving gear, and two transmission gears are rotatably installed inside the scraper. The two transmission gears are respectively meshed with the gear parts at one end of the corresponding scraper roller. The axial positions of the two transmission gears are different. When the adjusting gear moves axially, it can mesh with one of the transmission gears.

[0019] Furthermore, the adjusting gear is sleeved on the surface of the shaft, and the surfaces of the adjusting gear and the connecting plate are both provided with limiting holes;

[0020] A connecting ring is provided between the adjusting gear and the connecting plate, the connecting ring is fixedly mounted on the surface of the shaft, a magnetically controlled limit rod is axially slidably provided inside the connecting ring, and the limit rod can cooperate with the limit hole on the surface of the adjusting gear or the connecting plate when the limit rod moves axially;

[0021] A circular ring is rotatably mounted on the surface of the adjusting gear away from the connecting ring, a hydraulic rod is mounted inside the scraper, and a telescopic end of the hydraulic rod is fixedly connected to the circular ring.

[0022] Furthermore, a tail chamber is provided on a side of the flotation tank away from the aeration chamber, the tail chamber is communicated with an adjacent flotation chamber, and a water pump is fixedly installed inside the tail chamber;

[0023] An air pump and an air dissolving tank are fixedly installed on the outer surface of the air flotation tank, a water inlet pipe is provided between the water pump and the air dissolving tank, and an air inlet pipe 2 is provided between the air pump and the air dissolving tank;

[0024] The air pump is connected to the air pipe through an air inlet pipe, and a reflux pipe is arranged between the air dissolving tank and the air flotation pipe.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The sewage treatment equipment for agricultural and animal husbandry product production can slow down the fluctuation of liquid in multiple directions by arranging a plurality of air flotation chambers in the air flotation box, and arranging baffles and grid plates in the air flotation chambers, so as to prevent the suspended matter from being dispersed by water waves, and facilitate the floating of the suspended matter and stably float on the liquid surface, so as to facilitate the subsequent cleaning of the scum formed by the suspended matter. At the same time, the baffles and partitions are combined with the air pipe, so that the suspended matter is combined with microbubbles to float, which is beneficial to improve the floating effect of the suspended matter in the sewage.

[0027] 2. The sewage treatment equipment for agricultural and animal husbandry product production can increase the diffusion range and diffusion effect of microbubbles in the aeration chamber by arranging an aeration chamber in the flotation tank, and arranging a horizontally rotatable turntable and an up-and-down rotatable nozzle in the aeration chamber, so that the microbubbles can be fully combined with the suspended matter in the sewage. The aeration chamber is used as a pre-treatment process for sewage flotation treatment, which is beneficial to improving the effect of removing suspended matter in sewage, and is also convenient for the subsequent flotation chamber to treat the suspended matter remaining in the sewage.

[0028] 3. The sewage treatment equipment for agricultural and animal husbandry product production is designed with a scraper with a C-shaped cross-section, and an inner cavity is arranged inside the scraper. A rotatable scraper roller is designed in the groove on the bottom of the scraper. When the scraper is used to scrape the scum, the scum can be prevented from accumulating and sinking, and the scum can be prevented from passing over the bottom of the scraper from below the liquid surface, which is beneficial to improving the scraping effect of the scum. At the same time, a connecting ring is used in conjunction with an adjusting gear and a connecting plate. The angle of the scraper can be adjusted by rotating the driving gear, and the scraper roller on the corresponding side can be driven to rotate by rotating the driving gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The overall structure of the air flotation machine of the present invention is three-dimensional Figure 1 ;

[0030] Figure 2 The overall structure of the air flotation machine of the present invention is three-dimensional Figure 2 ;

[0031] Figure 3 The overall structure of the air flotation machine of the present invention is three-dimensional Figure 3 ;

[0032] Figure 4 The internal structure of the air flotation machine of the present invention is three-dimensional Figure 1 ;

[0033] Figure 5 The internal structure of the air flotation machine of the present invention is three-dimensional Figure 2 ;

[0034] Figure 6 This is a schematic diagram of the nozzle distribution structure on the turntable surface of the present invention;

[0035] Figure 7 This is a schematic diagram of the internal structure of the turntable of the present invention;

[0036] Figure 8 A three-dimensional diagram of the surface structure of the nozzle of the present invention;

[0037] Fig. 9 The support rod, support plate and scraper combined structure of the present invention is a three-dimensional Figure 1 ;

[0038] Fig.10The support rod, support plate and scraper combined structure of the present invention is a three-dimensional Figure 2 ;

[0039] Fig.11 The schematic diagram of the structure of the internal adjustment gear of the scraper of the present invention meshing with one of the transmission gears Figure 1 ;

[0040] Fig.12 The internal structure of the scraper of the present invention is shown in FIG. Figure 2 ;

[0041] Fig.13 This is a schematic diagram of the matching structure of the connecting ring, the adjusting gear and the connecting plate of the present invention;

[0042] Fig.14 It is a schematic diagram of the position state of the scraper of the present invention when scraping scum.

[0043] In the figure: 1, air flotation box; 1001, liquid inlet pipe; 2, side plate; 3, aeration chamber; 31, air pipe; 311, branch pipe; 4, turntable; 41, nozzle; 411, nozzle; 412, adjustment rod; 42, hose; 43, adjustment ring; 44, return spring; 5, partition; 6, air flotation chamber; 7, baffle; 8, grid plate; 9, air flotation tube; 10, sewage chamber; 101, guide plate; 102, sewage outlet; 11, support block; 111, support rod; 12, support rod; 1 21. Support plate; 122. Connecting plate; 13. Scraper; 131. Scraper roller; 132. Inner cavity; 133. Shaft; 14. Driving gear; 15. Adjusting gear; 151. Ring; 16. Transmission gear; 17. Connecting ring; 171. Limit rod; 18. Limit hole; 19. Tail cavity; 191. Discharge port; 20. Water pump; 201. Water inlet pipe; 21. Air pump; 211. Inlet pipe 1; 212. Inlet pipe 2; 22. Dissolving gas tank; 221. Reflux pipe. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] The embodiment of the sewage treatment equipment for agricultural and livestock product production is as follows:

[0046] See also Figure 1-Figure 14A sewage treatment device for agricultural animal husbandry product production, the sewage treatment device is an air flotation machine, which is used to treat the sewage generated by the slaughtering of animal husbandry products. The air flotation machine specifically includes an air flotation box 1, and two sets of side panels 2 are arranged inside the air flotation box 1 along its length direction. The upper side of the side panel 2 is inclined outward to facilitate the subsequent scraping of scum.

[0047] An aeration chamber 3 is provided on one side of the flotation tank 1 near the liquid inlet pipe 1001. The sewage to be treated is transported to the aeration chamber 3 by means of the liquid inlet pipe 1001. An air pipe 31 is provided at the bottom of the aeration chamber 3. An air pump 21 is fixedly installed on the outer surface of the flotation tank 1. The air pump 21 and the air pipe 31 are connected via an air inlet pipe 211. The air pump 21 inputs gas into the air pipe 31 via the air inlet pipe 211, and the gas is finally ejected through the nozzle 411 to form microbubbles.

[0048] There are several groups of air pipes 31, and a plurality of branch pipes 311 are arranged on the upper surface of the air pipes 31. A turntable 4 is rotatably installed on the surface of the branch pipes 311. A plurality of nozzles 41 are circumferentially installed inside the turntable 4. The nozzles 41 are connected to the branch pipes 311 through a hose 42. A nozzle 411 is arranged on the side surface of the nozzles 41. The turntable 4 is driven to rotate by the gas ejected from the nozzles 411. The nozzles 41 and the nozzles 411 are designed to increase the diffusion range of microbubbles in the aeration chamber 3. At the same time, the effect of microbubble diffusion can be improved by cooperating with the rotation of the turntable 4.

[0049] The nozzle 41 is installed inside the turntable 4 for vertical rotation. An L-shaped adjusting rod 412 is fixedly installed at one end of the nozzle 41 located inside the turntable 4, and a return spring 44 is provided between the nozzle 41 and the inner surface of the turntable 4; an adjusting ring 43 is fixedly installed on the upper end surface of the branch pipe 311, and a corrugated step surface is provided on the outer ring surface of the adjusting ring 43, and the free end of the adjusting rod 412 is always in contact with the step surface.

[0050] When the nozzle 411 sprays microbubbles, the reaction force generated by the microbubbles in the liquid drives the turntable 4 to rotate together through the nozzle 41. When the nozzle 41 rotates, the adjustment rod 412 rotates up and down under the cooperation of the wave-shaped step surface and the return spring 44. When the nozzle 41 rotates up and down, the diffusion range of the microbubbles can be adjusted so that the microbubbles can be more evenly diffused in the aeration chamber 3.

[0051] A plurality of partitions 5 are arranged between the two groups of side plates 2, and a gap is arranged between the partitions 5 and the bottom surface inside the flotation tank 1. An air flotation chamber 6 is formed between two adjacent partitions 5. The bottom inside the aeration chamber 3 is communicated with the adjacent air flotation chamber 6. A baffle 7 is vertically arranged inside the air flotation chamber 6. The bottom edge and both side edges of the baffle 7 are respectively sealed and connected with the bottom surface inside the flotation tank 1 and the inner side surfaces of the two groups of side plates 2. The upper side edge of the baffle 7 is lower than the upper side edge of the partition 5. After the sewage to be treated enters the air flotation chamber 6, it first flows upward through the side of the baffle 7 close to the sewage input, then flows over the baffle 7 to the other side of the baffle 7, and flows downward through the gap under the partition 5 on this side to flow out of the air flotation chamber 6. The baffle 7 cooperates with the partition 5 to slow down the fluctuation of the sewage in the length direction of the flotation tank 1, thereby facilitating the floating of suspended matter and increasing the flow stroke of the sewage.

[0052] The surfaces of the partition 5 and the baffle 7 are both provided with a grating 8, and the grating 8 is perpendicular to the partition 5 and the baffle 7. The grating 8 on the surfaces of the partition 5 and the baffle 7 cooperates to slow down the fluctuation of sewage flow in the width direction of the flotation tank 1, and cooperates with the baffle 7 and the partition 5, so as to slow down the fluctuation of sewage as a whole, so as to facilitate the floating of suspended matter, so that the scum can float stably on the liquid surface, and then facilitate the subsequent cleaning of the scum. The bottom of the flotation chamber 6 is provided with a flotation tube 9.

[0053] An air dissolving tank 22 is fixedly mounted on the outer surface of the air flotation box 1 , an air inlet pipe 212 is arranged between the air pump 21 and the air dissolving tank 22 ; a return pipe 221 is arranged between the air dissolving tank 22 and the air flotation tube 9 .

[0054] The flotation tube 9 is located on the side of the baffle 7 close to the liquid inlet pipe 1001 of the flotation tank 1. A plurality of nozzles are provided on the upper surface of the flotation tube 9, which spray microbubbles. The microbubbles attach to the suspended matter in the sewage, thereby reducing the rising specific gravity of the suspended matter, causing the suspended matter to float up to form scum. At the same time, the sewage on the same side of the flotation tube 9 flows upward, which can assist the suspended matter to float up, thereby improving the floating effect of the suspended matter.

[0055] The side of the side plate 2 away from the flotation chamber 6 is a sewage chamber 10, and a scraper 13 is arranged above the flotation chamber 6. The scraper 13 moves along the width direction of the flotation box 1, and the movement of the scraper 13 is used to push the scum into the sewage chamber 10. An inclined guide plate 101 is installed in the sewage chamber 10, and a sewage outlet 102 is opened on the side surface of the flotation box 1. The guide plate 101 extends downward to the position of the sewage outlet 102, and the guide plate 101 is used to discharge the cleaned scum out of the flotation box 1.

[0056] The sewage chamber 10 extends to both sides of the aeration chamber 3. A scraper 13 is also provided above the aeration chamber 3. A water nozzle is installed on the inner wall of the sewage chamber 10. The water nozzle corresponds horizontally to the upper side of the side plate 2. When the scraper 13 moves to the top of the sewage chamber 10, the scraper 13 is sprayed with the water nozzle.

[0057] Among them, a driving box is provided on both sides of the length direction of the flotation box 1, a screw is rotatably installed inside the driving box, a motor for driving the screw to rotate is installed on the side of the driving box, a support block 11 is slidably installed on the upper surface of the driving box, the support block 11 is threadedly installed on the surface of the screw, a support rod 111 is fixedly installed between the two support blocks 11, and a plurality of groups of support rods 12 are fixedly provided on the surface of the support rod 111, the support rod 12 is a hydraulic telescopic rod, and a support plate 121 is fixedly installed at the lower end of the support rod 12, and connecting plates 122 are fixedly installed at both ends of the lower surface of the support plate 121.

[0058] The cross section of the scraper 13 is C-shaped, and shafts 133 are fixedly installed at both ends of the scraper 13. The connecting plate 122 is rotatably connected to the shaft 133. The position of the scraper 13 can be adjusted up and down by using the support rod 12. When the shaft 133 rotates relative to the connecting plate 122, it is used to adjust the angle of the scraper 13 so that one side of the scraper 13 is immersed below the liquid surface.

[0059] Two inner cavities 132 are provided inside the scraper 13. Two notches are opened inside the scraper 13. A scraping roller 131 is rotatably installed inside the notch. A plurality of scraping grooves are provided in the scraping roller 131. When one side of the scraper 13 is immersed below the liquid surface, the scraping roller 131 corresponding to the side rotates toward the scraping roller 131 on the other side. When the scraping roller 131 rotates, the scraping grooves are used to scrape the scum into the corresponding inner cavity 132. The inner cavity 132 can be connected to a derivation pipe (not shown in the figure) for extracting the scum in the inner cavity 132.

[0060] A driving gear 14 is rotatably installed on the surface of the connecting plate 122 at least at one end, and the driving gear 14 is driven to rotate by a motor module installed on the surface of the connecting plate 122. An adjusting gear 15 is provided on the surface of the shaft 133, and the adjusting gear 15 is meshed with the driving gear 14. When the adjusting gear 15 is relatively fixed to the shaft 133, the motor module is meshed with the adjusting gear 15 through the driving gear 14, thereby driving the scraper 13 to rotate to adjust the angle of the scraper 13.

[0061] A gear part is fixedly installed at one end of the scraper roller 131 close to the driving gear 14, and two transmission gears 16 are rotatably installed inside the scraper 13. The two transmission gears 16 are respectively meshed with the gear parts at one end of the corresponding scraper roller 131. The axial positions of the two transmission gears 16 are different. When the adjusting gear 15 moves axially, it can mesh with one of the transmission gears 16 and always mesh with the driving gear 14. When the adjusting gear 15 meshes with one of the transmission gears 16, the adjusting gear 15 and the shaft 133 rotate relative to each other. In this state, the scraper roller 131 is driven to rotate by utilizing the meshing of the driving gear 14 and the adjusting gear 15.

[0062] The adjusting gear 15 is sleeved on the surface of the shaft 133, and the surfaces of the adjusting gear 15 and the connecting plate 122 are provided with limiting holes 18; a connecting ring 17 is provided between the adjusting gear 15 and the connecting plate 122, and the connecting ring 17 is fixedly installed on the surface of the shaft 133. A magnetically controlled limiting rod 171 is provided inside the connecting ring 17 for axial sliding. The limiting rod 171 is made of magnetic material, and an electromagnetic coil is arranged inside the connecting ring 17. The axial movement of the limiting rod 171 is controlled by utilizing the energized state of the electromagnetic coil. When the limiting rod 171 moves axially, it can cooperate with the limiting hole 18 on the surface of the adjusting gear 15 or the connecting plate 122.

[0063] A circular ring 151 is rotatably mounted on the surface of the adjusting gear 15 away from the connecting ring 17 . A hydraulic rod is installed inside the scraper 13 . The telescopic end of the hydraulic rod is fixedly connected to the circular ring 151 .

[0064] When the limiting rod 171 cooperates with the limiting hole 18 on the surface of the adjusting gear 15, the adjusting gear 15 and the connecting ring 17 are in a relatively fixed state. When the driving gear 14 is driven to rotate, the shaft 133 will be driven to rotate together through the adjusting gear 15. This state is used to adjust the angle of the scraper 13; when the limiting rod 171 cooperates with the limiting hole 18 on the surface of the connecting plate 122, the hydraulic rod and the circular ring 151 are used to axially adjust the position of the adjusting gear 15, so that the adjusting gear 15 is meshed with one of the transmission gears 16. At this time, the adjusting gear 15 can rotate relative to the shaft 133, and the connecting ring 17 and the connecting plate 122 are in a relatively fixed state. In this state, the position angle of the scraper 13 remains unchanged. When the driving gear 14 is driven to rotate, the scraper roller 131 will be driven to rotate through the meshing of the adjusting gear 15, the transmission gear 16 and the gear member.

[0065] A tail chamber 19 is provided on the side of the flotation tank 1 away from the aeration chamber 3. The tail chamber 19 is connected to the adjacent flotation chamber 6. The treated sewage enters the tail chamber 19. A discharge port 191 is provided on the side of the bottom of the tail chamber 19. Part of the treated sewage is discharged from the flotation tank 1 through the discharge port 191. A water pump 20 is fixedly installed inside the tail chamber 19. A water inlet pipe 201 is provided between the water pump 20 and the dissolved air tank 22.

[0066] The water pump 20 transports part of the treated return water to the dissolved gas tank 22 through the water inlet pipe 201, and the air pump 21 pressurizes the dissolved gas tank 22 through the air inlet pipe 212. The gas is forced to dissolve in the water at a pressure of about 0.5MP, and then transported to the flotation tube 9 through the reflux pipe 221 and released through the nozzle. After the gas dissolved in the water is released into the flotation chamber 6, microbubbles with a particle size of 20-50 microns are formed, and the microbubbles are combined with the suspended matter in the sewage.

[0067] Working principle of sewage treatment equipment:

[0068] The sewage generated by the slaughtering and processing of livestock products contains a large amount of impurities such as blood, grease, and hair. First, a grid screen is used to remove large suspended solids and impurities such as hair in the sewage, and then the sewage is transported to the aeration chamber 3 through the liquid inlet pipe 1001. At this time, the air pump 21 is in a starting state. The air pump 21 transports gas to the air pipe 31 through the air inlet pipe 211. The gas passes through the branch pipe 311, the hose 42 and the nozzle 41, and is ejected from the nozzle 411, thereby forming microbubbles in the aeration chamber 3. When the nozzle 411 ejects gas, the turntable 4 rotates accordingly, and the nozzle 41 reciprocates up and down, thereby diffusing the microbubbles into the aeration chamber 3. The microbubbles are attached to the surface of the suspended matter in the sewage, so that the suspended matter floats on the liquid surface.

[0069] The sewage in the aeration chamber 3 enters the adjacent flotation chamber 6 from the bottom thereof. At this time, the air tank 22 is filled with clean water, and the air pump 21 pressurizes the air tank 22. The liquid containing dissolved gas in the air tank 22 enters the flotation tube 9 through the reflux pipe 221 and is ejected from the nozzle to form microbubbles. The microbubbles are attached to the surface of the suspended matter in the sewage entering the flotation chamber 6, and at the same time, the suspended matter floats on the surface of the liquid in the flotation chamber 6 in coordination with the rising water flow.

[0070] After passing through several flotation chambers 6 , the sewage enters the tail chamber 19 , and part of the treated sewage is discharged through the discharge port 191 , and part of the treated sewage is transported to the aeration tank 22 as return water.

[0071] After scum formed by suspended matter gathers on the liquid surface of the aeration chamber 3 and the flotation chamber 6, the support rod 12 is used to adjust the position height of the scraper 13, and the motor module on the surface of the connecting plate 122 is used to adjust the angle of the scraper 13, and then the motor device on the side of the drive box is started, and the screw inside the drive box is threadedly engaged with the support block 11 to drive the support block 11 to move. The support block 11 drives the scraper 13 to move through the support rod 111, the support rod 12, the support plate 121 and the connecting plate 122. At the same time, the scraper roller 131 on the corresponding side is driven to rotate by starting the motor module, and the scraper 13 cooperates with the scraper roller 131 to scrape and remove the scum on the liquid surface. The scraper 13 pushes the scum into the sewage discharge chamber 10. This cycle can treat the sewage generated by slaughtering livestock.

Claims

1. A sewage treatment device for agricultural and livestock product production, comprising an air flotation tank (1), characterized in that: The air flotation box (1) is provided with two groups of side panels (2) along its length direction, a plurality of partitions (5) are provided between the two groups of side panels (2), a gap is provided between the partitions (5) and the bottom surface of the air flotation box (1), an air flotation cavity (6) is provided between two adjacent partitions (5), a baffle (7) is vertically provided inside the air flotation cavity (6), and the bottom edge and two side edges of the baffle (7) are respectively sealed and connected to the bottom surface of the air flotation box (1) and the inner side surfaces of the two groups of side panels (2); The surfaces of the partition plate (5) and the baffle plate (7) are both provided with grid plates (8), the grid plates (8) being perpendicular to the partition plate (5) and the baffle plate (7), and the bottom of the air flotation chamber (6) is provided with an air flotation tube (9), the air flotation tube (9) being located on a side of the baffle plate (7) close to the liquid inlet pipe (1001) of the air flotation tank (1); A side of the side plate (2) away from the air flotation chamber (6) is a sewage discharge chamber (10), and a scraper (13) is provided above the air flotation chamber (6). The scraper (13) moves along the width direction of the air flotation box (1), and the movement of the scraper (13) is used to push the scum into the sewage discharge chamber (10); A drive box is provided on both sides of the flotation box (1) in the length direction, a support block (11) is slidably mounted on the upper surface of the drive box, a support rod (111) is fixedly mounted between the two support blocks (11), a plurality of groups of support rods (12) are fixedly mounted on the surface of the support rod (111), a support plate (121) is fixedly mounted on the lower end of the support rod (12), and connecting plates (122) are fixedly mounted on both ends of the lower surface of the support plate (121); The scraper (13) has a C-shaped cross section, and shafts (133) are fixedly mounted at both ends of the scraper (13), and the connecting plate (122) is rotatably connected to the shaft (133); Two inner cavities (132) are provided inside the scraper (13), two notches are provided inside the scraper (13), a scraper roller (131) is rotatably mounted inside the notch, a plurality of scraping grooves are provided in the scraper roller (131), and when the scraper roller (131) rotates, the scraping grooves are used to scrape the scum into the corresponding inner cavities (132); A driving gear (14) is rotatably mounted on the surface of the connecting plate (122) at at least one end, and an adjusting gear (15) is provided on the surface of the shaft (133), wherein the adjusting gear (15) meshes with the driving gear (14); The adjusting gear (15) is sleeved on the surface of the shaft (133), and the surfaces of the adjusting gear (15) and the connecting plate (122) are both provided with limiting holes (18); A connecting ring (17) is provided between the adjusting gear (15) and the connecting plate (122); the connecting ring (17) is fixedly mounted on the surface of the shaft (133); a magnetically controlled limiting rod (171) is axially slidably provided inside the connecting ring (17); the limiting rod (171) can cooperate with a limiting hole (18) on the surface of the adjusting gear (15) or the connecting plate (122) when the limiting rod (171) moves axially; A circular ring (151) is rotatably mounted on the surface of the adjusting gear (15) at a side away from the connecting ring (17), and a hydraulic rod is mounted inside the scraper (13), wherein the telescopic end of the hydraulic rod is fixedly connected to the circular ring (151).

2. The sewage treatment equipment for agricultural and livestock product production according to claim 1 is characterized by: An aeration chamber (3) is provided on one side of the air flotation tank (1) close to the liquid inlet pipe (1001); the bottom of the aeration chamber (3) is in communication with the adjacent air flotation chamber (6); and an air pipe (31) is provided at the bottom of the aeration chamber (3); The sewage discharge chamber (10) extends to both sides of the aeration chamber (3), and a scraper (13) is also provided above the aeration chamber (3).

3. The sewage treatment equipment for agricultural and livestock product production according to claim 2 is characterized in that: The air pipe (31) has a plurality of groups, and a plurality of branch pipes (311) are provided on the upper surface of the air pipe (31), and a rotating disk (4) is rotatably mounted on the surface of the branch pipe (311); A plurality of nozzles (41) are installed in the circumferential direction of the interior of the rotating disk (4); the nozzles (41) are connected to the branch pipe (311) via a hose (42); a nozzle (411) is provided on the side surface of the nozzle (41); and the gas ejected from the nozzle (411) is used to drive the rotating disk (4) to rotate.

4. The sewage treatment equipment for agricultural and livestock product production according to claim 3 is characterized by: The nozzle (41) is mounted inside the rotating disk (4) so ​​as to rotate up and down, an L-shaped adjusting rod (412) is fixedly mounted on one end of the nozzle (41) located inside the rotating disk (4), and a return spring (44) is provided between the nozzle (41) and the inner surface of the rotating disk (4); An adjustment ring (43) is fixedly mounted on the upper end surface of the branch pipe (311), and an outer ring surface of the adjustment ring (43) is provided with a corrugated step surface, and the free end of the adjustment rod (412) is always in contact with and fits the step surface.

5. The sewage treatment equipment for agricultural and livestock product production according to claim 4 is characterized by: A gear member is fixedly mounted on one end of the scraper roller (131) close to the driving gear (14); two transmission gears (16) are rotatably mounted inside the scraper plate (13); the two transmission gears (16) are respectively meshed with the gear member at one end of the corresponding scraper roller (131); the axial positions of the two transmission gears (16) are different; when the adjusting gear (15) moves axially, it can mesh with one of the transmission gears (16).

6. The sewage treatment equipment for agricultural and livestock product production according to claim 5 is characterized by: A tail chamber (19) is provided on a side of the interior of the air flotation tank (1) away from the aeration chamber (3), the tail chamber (19) being in communication with an adjacent air flotation chamber (6), and a water pump (20) being fixedly installed inside the tail chamber (19); An air pump (21) and an air dissolving tank (22) are fixedly mounted on the outer surface of the air flotation tank (1); a water inlet pipe (201) is provided between the water pump (20) and the air dissolving tank (22); and an air inlet pipe 2 (212) is provided between the air pump (21) and the air dissolving tank (22); The air pump (21) and the air pipe (31) are connected via an air inlet pipe 1 (211), and a return pipe (221) is provided between the air dissolving tank (22) and the air flotation pipe (9).

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