Aeration tank for sewage treatment of pig farm

Abstract

The invention relates to the technical field of sewage treatment, and discloses a pig farm sewage treatment aeration tank which comprises a bottom plate, a tank body is fixedly mounted in the bottom plate, the tank body is slidably sleeved with an extension frame, and the upper portion of the inner side of the extension frame is fixedly connected with the upper portion of the inner side of the tank body through a film sleeve. And a lifting assembly used for driving the extending frame to ascend and descend is arranged outside the extending frame, the outer side of the extending frame is fixedly sleeved with a pressing plate, and a shell is fixedly installed at the top of the bottom plate. According to the device, when the aeration tank needs to be cleaned, the outward dissipation speed of harmful gas in the aeration tank can be increased, so that workers do not need to wait for a long time, the working efficiency of cleaning the aeration tank can be greatly improved, the harmful gas in the aeration tank can be outwards fanned out through the fanning mounting plate, and the cleaning efficiency of the aeration tank is greatly improved. The outward dissipation speed of harmful gas in the aeration tank is further improved, so that the working efficiency of cleaning the aeration tank is further improved.

Description

Technical Field

[0001] The invention belongs to the technical field of sewage treatment, and in particular relates to an aeration tank used for sewage treatment in pig farms. Background Art

[0002] Aeration tanks are biochemical reactors designed according to the characteristics of microorganisms. The degree of degradation of organic pollutants mainly depends on the aeration reaction conditions designed by humans.

[0003] The aeration tank uses the activated sludge method to treat sewage. The aeration tank provides a certain sewage retention time to meet the oxygen required by aerobic microorganisms and the mixing conditions for the sewage and activated sludge to fully contact. The aeration tank is mainly composed of three parts: the tank body, the aeration system, and the inlet and outlet. The tank body is generally built with reinforced concrete, and the plane shape can be rectangular, square, or circular.

[0004] Aeration tanks are required for wastewater treatment in pig farms. When the existing aeration tanks are in use, when it is necessary to clean the sludge at the bottom of the aeration tanks, the sewage in the aeration tanks needs to be pumped out, and then the staff needs to wait for the harmful gases in the aeration tanks to escape out of the aeration tanks before entering the aeration tanks to clean them. However, the time required to wait for the harmful gases in the aeration tanks to escape out is relatively long, which greatly affects the efficiency of cleaning the aeration tanks.

[0005] Therefore, it is necessary to invent an aeration tank for pig farm wastewater treatment to solve the above problems. Summary of the invention

[0006] In view of the above problems, the present invention provides an aeration tank for pig farm wastewater treatment to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an aeration tank for pig farm sewage treatment, comprising a bottom plate, a tank body is fixedly installed inside the bottom plate, an external sliding sleeve of the tank body is provided with an extension frame, the inner upper part of the extension frame is fixedly connected to the inner upper part of the tank body through a film sleeve, a lifting component for driving the extension frame to rise and fall is provided on the outside of the extension frame, a pressure plate is provided on the outer fixed sleeve of the extension frame, a shell is fixedly installed on the top of the bottom plate, the shell and the pressure plate are fixedly connected through a cover body, both sides of the shell are connected to the inside of the tank body through multiple air pipes, a closing component for closing the end of the air pipe is provided inside the tank body, and an aeration component is provided inside the tank body.

[0008] Further, the closing component includes mounting plates arranged on both sides of the inner wall of the pool body. The mounting plates are attached to the inner wall of the pool body. Circular holes corresponding to the ends of the air pipes are formed on the surfaces of the mounting plates. A closing plate is arranged in the circular holes. A sealing ring is fixedly sleeved on the outer side of the closing plate. The sealing ring abuts against the inner wall of the circular hole. A rotating component for driving the closing plate to rotate is arranged outside the closing plate.

[0009] Further, the rotating component includes brackets fixedly installed on the mounting plates. The number of brackets corresponds to that of the closing plates. A rotating shaft is rotatably installed inside the brackets. A connecting plate is fixedly sleeved on the outer part of the rotating shaft. The connecting plate is fixedly connected to the closing plate. A gear is fixedly sleeved in the middle of the rotating shaft. A sliding groove is formed on the outer side of the mounting plate. A slider is slidably installed in the sliding groove. A rack meshing with the gear is fixedly installed on the outer side of the slider. An electromagnet is fixedly installed on the outer side of the mounting plate and below the rack. The bottom wall of the sliding groove and the slider are fixedly connected by a spring. The slider and the bottom wall of the sliding groove are fixedly connected by a shielding strip. The shielding strip seals the spring in the sliding groove.

[0010] Further, the shielding strip is specifically set as a bellows.

[0011] Further, side plates are symmetrically and fixedly installed on both inner walls of the pool body. A cylinder is rotatably installed between adjacent side plates. The cylinder is fixedly connected to the mounting plate through a fixing plate. A driving component for driving the cylinder to rotate is arranged outside the cylinder.

[0012] Further, the driving component includes a pulling rope. A rope groove is formed in the middle of the cylinder. One end of the pulling rope is fixed in the rope groove. The pulling rope is wound in the rope groove. A mounting frame corresponding to the pulling rope is fixedly installed outside the bottom plate. A winding rod is rotatably installed inside the mounting frame. The winding rod is fixedly connected to the other end of the pulling rope. A first motor is fixedly installed outside the mounting frame. The output shaft of the first motor is fixedly connected to one end of the winding rod.

[0013] Further, the lifting component includes a plurality of second motors fixedly connected to the top of the bottom plate. A plurality of threaded holes are formed in the extension frame. A lead screw is threadedly connected in the threaded holes. One end of the lead screw is fixedly connected to the top end of the output shaft of the second motor.

[0014] Further, a groove is formed on the side of the mounting plate close to the air pipe. The groove is in a "mouth" shape. A rubber pad is arranged in the groove. The rubber pad abuts against the inner wall of the pool body.

[0015] The technical effects and advantages of the present invention: 1. The present invention can accelerate the outward escape speed of harmful gases in the aeration tank when it is necessary to clean the aeration tank, so that the staff does not need to wait for too long, thereby greatly improving the work efficiency of cleaning the aeration tank; 2. The present invention can fan out harmful gases in the aeration tank through the fanning installation plate, further increasing the outward escape speed of harmful gases in the aeration tank, thereby further improving the work efficiency of cleaning the aeration tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The structure of the aeration tank for pig farm wastewater treatment according to the present invention is shown. Figure 1 ; Figure 2 The cross-sectional structure diagram of an aeration tank for pig farm wastewater treatment according to an embodiment of the present invention is shown. Figure 1 ; Figure 3 The embodiment of the present invention is shown Figure 2 The enlarged structural diagram at A in the middle; Figure 4 The embodiment of the present invention is shown Figure 1 The enlarged structural diagram at B in the middle; Figure 5 The cross-sectional structure diagram of an aeration tank for pig farm wastewater treatment according to an embodiment of the present invention is shown. Figure 2 ; Figure 6 The structure of the aeration tank for pig farm wastewater treatment according to the present invention is shown. Figure 2 ; In the figure: 1, bottom plate; 2, pool body; 3, extension frame; 4, film sleeve; 5, pressure plate; 6, shell; 7, cover body; 8, air pipe; 9, mounting plate; 10, closing plate; 11, bracket; 12, connecting plate; 13, sealing ring; 14, gear; 15, rack; 16, electromagnet; 17, spring; 18, shielding strip; 19, rubber pad; 20, fixing plate; 21, side plate; 22, cylinder; 23, pull rope; 24, winding rod; 25, first motor; 26, second motor; 27, screw rod. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0018] The present invention provides an aeration tank for pig farm sewage treatment, such as Figures 1 to 6As shown, it includes a base plate 1, a tank body 2 is fixedly installed inside the base plate 1, an external sliding sleeve of the tank body 2 is provided with an extension frame 3, the inner upper part of the extension frame 3 is fixedly connected to the inner upper part of the tank body 2 through a film sleeve 4, the film sleeve 4 is made of an impermeable membrane, the outside of the extension frame 3 is provided with a lifting component for driving the lifting thereof, the outer fixed sleeve of the extension frame 3 is provided with a pressing plate 5, a shell 6 is fixedly installed on the top of the base plate 1, the shell 6 and the pressing plate 5 are fixedly connected through a cover body 7, the cover body 7 is an accordion cover, both sides of the shell 6 are connected to the inside of the tank body 2 through a plurality of air pipes 8, the inside of the tank body 2 is provided with a closing component for closing the end of the air pipe 8, an aeration component is provided in the tank body 2, the aeration component is an aeration device in the aeration tank in the prior art, which is the prior art and will not be described here.

[0019] During use, sewage is stored in the aeration tank formed by the extension frame 3, the film sleeve 4, and the tank body 2. When the bottom of the tank body 2 needs to be cleaned, the sewage after aeration treatment in the aeration tank is evacuated through external extraction equipment, the sealing component of the end of the air pipe 8 is cancelled, and the extension frame 3 is driven to descend by the lifting component. As the extension frame 3 descends, the pressure plate 5 is lowered, thereby compressing the cover body 7, so that the air in the cover body 7 is discharged into the tank body 2 through the air pipe 8. The air pipe 8 is located at the lower part of the tank body 2. As the extension frame 3 descends, the height of the entire aeration tank is shortened, so that the passage path of harmful gases in the aeration tank when escaping to the outside becomes shorter, and the air continuously ejected from the air pipe 8 can accelerate the speed of harmful gases in the aeration tank to escape to the outside, so that the escape speed of harmful gases in the aeration tank can be greatly improved, so that the staff can enter the tank body 2 faster to perform cleaning work, thereby improving work efficiency. The sealing component can prevent sludge from entering the air pipe 8 and clogging it during normal use.

[0020] like Figure 3 As shown, the closing component includes mounting plates 9 arranged on both sides of the inner wall of the pool body 2, the mounting plates 9 are in contact with the inner wall of the pool body 2, a circular hole corresponding to the end of the air pipe 8 is opened on the surface of the mounting plate 9, a closing plate 10 is arranged in the circular hole, a sealing ring 13 is arranged on the outer fixed sleeve of the closing plate 10, the sealing ring 13 is in contact with the inner wall of the circular hole, and a rotating component for driving the closing plate 10 to rotate is arranged on the outside.

[0021] The circular hole is closed by the closing plate 10 and the sealing ring 13, so that the end of the air pipe 8 can be closed in cooperation with the mounting plate 9, thereby preventing sludge from entering the air pipe 8 and blocking the air pipe 8. The closing plate 10 is driven by the rotating assembly to rotate with the sealing ring 13 to leave the circular hole, so that the circular hole is opened, and the closure of the end of the air pipe 8 is cancelled at this time.

[0022] like Figure 3As shown, the rotating assembly includes a bracket 11 fixedly mounted on the mounting plate 9, the number of the brackets 11 corresponds to the closing plate 10, a rotating shaft is rotatably mounted inside the bracket 11, a connecting plate 12 is provided on the external fixed sleeve of the rotating shaft, the connecting plate 12 is fixedly connected to the closing plate 10, a gear 14 is provided on the middle fixed sleeve of the rotating shaft, a slide groove is provided on the outer side of the mounting plate 9, a slider is slidably mounted in the slide groove, a rack 15 cooperating with the gear 14 is fixedly mounted on the outer side of the slider, an electromagnet 16 is fixedly mounted on the outer side of the mounting plate 9 and below the rack 15, the electromagnet 16 is an underwater electromagnet that can operate underwater, the rack 15 is made of iron, the bottom wall of the slide groove is fixedly connected to the slider by a spring 17, the rack 15, the spring 17, and the gear 14 are all rust-proofed, and the rust-proofing treatment is the rust-proofing treatment of iron products when used underwater in the prior art, the slider is fixedly connected to the bottom wall of the slide groove by a shielding strip 18, and the shielding strip 18 seals the spring 17 in the slide groove.

[0023] The electromagnet 16 is energized to make it magnetic, so that it attracts the rack 15 and moves it with the slider down, compressing the spring 17 to deform it and generate a force. As the rack 15 moves down, the driving gear 14 rotates forward, and then moves with the rotating shaft, connecting plate 12, closing plate 10, and sealing ring 13, so that the closing plate 10 and the sealing ring 13 leave the circular hole, canceling the sealing of the end of the trachea 8, and the electromagnet 16 is powered off. At this time, the compressed spring 17 releases the force to restore the slider and rack 15. Conversely, the closing plate 10 and the sealing ring 13 are driven to return to the circular hole, close the circular hole, and restore the sealing of the end of the trachea 8.

[0024] like Figure 3 As shown, the shielding strip 18 is specifically configured as an accordion cover.

[0025] The shielding strip 18 can prevent large pieces of sludge from entering the chute, prevent the spring 17 from being affected by the large pieces of sludge, and ensure the normal use of the spring 17.

[0026] like Figure 1 and Figure 4 As shown, side plates 21 are symmetrically fixedly installed on the inner walls of both sides of the pool body 2, and cylinders 22 are rotatably installed between adjacent side plates 21. The cylinders 22 are fixedly connected to the mounting plate 9 through the fixing plate 20, and a driving component for driving the rotation thereof is provided on the outside of the cylinders 22.

[0027] When the circular hole is opened, the driving assembly drives the cylinder 22, the fixing plate 20, and the mounting plate 9 to rotate upward with the bracket 11, the rotating shaft, the connecting plate 12, the closing plate 10, and the sealing ring 13, so that the mounting plate 9 leaves the inner wall of the pool body 2. When the mounting plate 9 rises to the highest point, the mounting plate 9 is in a horizontal state, and then the mounting plate 9 is driven to rotate downward by 45 degrees. During the downward rotation process, since the circular hole is in an open state, the gas in the pool body 2 passes through the circular hole and escapes normally to the outside. When the mounting plate 9 is rotated 45 degrees, the sealing of the circular hole by the closing plate 10 and the sealing ring 13 is restored, and then the mounting plate 9 is driven to rotate upward again to fan the air in the pool body 2 upward. When the mounting plate 9 is horizontal, the circular hole is opened again, and the above operation is repeated subsequently, so that the circular hole is opened when the mounting plate 9 rotates downward, and the circular hole is closed when it rotates upward. With the continuous movement of the mounting plate 9, the gas in the pool body 2 is fanned outward, thereby further increasing the escape speed of harmful gases in the pool body 2.

[0028] like Figure 1 and Figure 4 As shown, the driving assembly includes a pull rope 23, a rope groove is opened in the middle of the cylinder 22, one end of the pull rope 23 is fixed in the rope groove, the pull rope 23 is rolled up in the rope groove, a mounting frame corresponding to the pull rope 23 is fixedly installed on the outside of the base plate 1, a winding rod 24 is rotatably installed inside the mounting frame, the winding rod 24 is fixedly connected to the other end of the pull rope 23, a first motor 25 is fixedly installed on the outside of the mounting frame, and the output shaft of the first motor 25 is fixedly connected to one end of the winding rod 24.

[0029] Start the first motor 25 to rotate its output shaft forward and rotate the winding rod 24, thereby winding the pull rope 23, and then pulling the cylinder 22 to rotate. As the cylinder 22 rotates, the fixed plate 20 and the mounting plate 9 rotate upward. Start the first motor 25 to reverse its output shaft to release the pull rope 23. Under the action of gravity, the mounting plate 9, the fixed plate 20 and the cylinder 22 rotate downward quickly to drive the mounting plate 9.

[0030] like Figure 5 As shown, the lifting assembly includes a plurality of second motors 26 fixedly connected to the top of the base plate 1, and a plurality of threaded holes are opened on the extension frame 3. A screw rod 27 is threadedly connected in the threaded holes, and one end of the screw rod 27 is fixedly connected to the top of the output shaft of the second motor 26.

[0031] The second motor 26 is started to make its output shaft reversely rotate with the connected screw rod 27, thereby driving the extension frame 3 to descend in coordination with the threaded hole. Conversely, the output shaft of the second motor 26 is made to rotate forwardly, so that the extension frame 3 can be lifted.

[0032] like Figure 3As shown in the figure, a groove is formed on the side of the mounting plate 9 close to the air pipe 8. The groove is in a "mouth" shape, and a rubber pad 19 is provided in the groove. The rubber pad 19 abuts against the inner wall of the pool body 2.

[0033] The tightness of the combination between the mounting plate 9 and the inner wall of the pool body 2 is improved through the rubber pad 19, preventing sewage from entering the air pipe 8 through the gap between the mounting plate 9 and the pool body 2.

[0034] Working principle: When in use, sewage is stored in the aeration tank formed by the extension frame 3, the film sleeve 4, and the tank body 2. When the bottom of the tank body 2 needs to be cleaned, the sewage after aeration treatment in the aeration tank is evacuated through external extraction equipment, and the electromagnet 16 is energized to make it magnetic, so that the rack 15 is attracted to make it descend with the slider, and the compression spring 17 is deformed to generate a force. As the rack 15 descends, the driving gear 14 rotates forward, and then the rotating shaft, the connecting plate 12, the closing plate 10, and the sealing ring 13 move accordingly, so that the closing plate 10 and the sealing ring 13 leave the circular hole, cancel the closure of the end of the air pipe 8, and start the second motor 26 to make its output shaft reverse with the connected screw rod 27, so as to cooperate with the threaded hole to drive the extension frame 3 to descend. As the extension frame 3 descends, the pressure plate 5 descends, thereby compressing the cover body 7, so that the air in the cover body 7 is discharged into the tank body 2 through the air pipe 8. The air pipe 8 is located at the lower part of the tank body 2. As the extension frame 3 descends, the height of the entire aeration tank is shortened, so that the passage path of the harmful gas in the aeration tank when escaping outward becomes shorter. With the air continuously ejected from the air pipe 8, the speed of the harmful gas in the aeration tank escaping outward can be accelerated, which can greatly improve the speed of the harmful gas in the aeration tank escaping outward, so that the staff can enter the tank body 2 faster to perform cleaning work, thereby improving work efficiency. The closing plate 10 and the sealing ring 13 can prevent sludge from entering the air pipe 8 during normal use. It is blocked; when the round hole is opened, the first motor 25 is started to make its output shaft rotate forward and drive the winding rod 24 to rotate, so that the pull rope 23 is wound, and then the cylinder 22 is pulled to rotate. As the cylinder 22 rotates, the fixing plate 20 and the mounting plate 9 are rotated upward, and the mounting plate 9 rotates upward with the bracket 11, the rotating shaft, the connecting plate 12, the closing plate 10, and the sealing ring 13, so that the mounting plate 9 leaves the inner wall of the pool body 2. When the mounting plate 9 rises to the highest point, the mounting plate 9 is in a horizontal state. Then the first motor 25 is started to reverse its output shaft to release the pull rope 23. Under the action of gravity, the mounting plate 9, the fixing plate 20, and the cylinder 22 rotate downward quickly, so that the mounting plate 9 rotates downward 45 degrees. During the downward rotation, since the circular hole is in an open state, the gas in the pool body 2 passes through the circular hole and escapes normally. When the mounting plate 9 is rotated 45 degrees, the electromagnet 16 is powered off. At this time, the compressed spring 17 releases the force to reset the slider and the rack 15. Conversely, the closing plate 10 and the sealing ring 13 are driven to reset and close the circular hole. Then, the mounting plate 9 is driven to rotate upward again to fan the air in the pool body 2 upward. When the mounting plate 9 is horizontal, the circular hole is opened again. The above operation is repeated subsequently, so that the circular hole is opened when the mounting plate 9 rotates downward and the circular hole is closed when it rotates upward. With the continuous movement of the mounting plate 9, the gas in the pool body 2 is fanned outward, thereby further increasing the escape speed of harmful gases in the pool body 2.

[0035] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. An aeration tank for pig farm wastewater treatment, comprising a bottom plate (1), characterized in that: A tank body (2) is fixedly mounted inside the bottom plate (1), an external sliding sleeve of the tank body (2) is provided with an extension frame (3), an inner upper portion of the extension frame (3) is fixedly connected to an inner upper portion of the tank body (2) via a film sleeve (4), a lifting component for driving the extension frame (3) to be lifted and lowered is provided outside the extension frame (3), a pressing plate (5) is provided on the outer fixed sleeve of the extension frame (3), a shell (6) is fixedly mounted on the top of the bottom plate (1), the shell (6) and the pressing plate (5) are fixedly connected via a cover (7), both sides of the shell (6) are connected to the inside of the tank body (2) via a plurality of air pipes (8), a sealing component for sealing the ends of the air pipes (8) is provided inside the tank body (2), and an aeration component is provided inside the tank body (2).

2. The aeration tank for pig farm wastewater treatment according to claim 1, characterized in that: The sealing component comprises mounting plates (9) arranged on both sides of the inner wall of the pool body (2), the mounting plates (9) being in contact with the inner wall of the pool body (2), a circular hole corresponding to the end of the air pipe (8) being opened on the surface of the mounting plates (9), a sealing plate (10) being arranged in the circular hole, a sealing ring (13) being arranged on the outer fixed sleeve of the sealing plate (10), the sealing ring (13) being in contact with the inner wall of the circular hole, and a rotating component for driving the sealing plate (10) to rotate being arranged on the outside.

3. The aeration tank for pig farm wastewater treatment according to claim 2, characterized in that: The rotating assembly comprises a bracket (11) fixedly mounted on the mounting plate (9), the number of the brackets (11) corresponding to the closing plate (10), a rotating shaft rotatably mounted inside the bracket (11), a connecting plate (12) being provided on the external fixed sleeve of the rotating shaft, the connecting plate (12) being fixedly connected to the closing plate (10), a gear (14) being provided on the middle fixed sleeve of the rotating shaft, a slide groove being provided on the outer side of the mounting plate (9), a slider being slidably mounted in the slide groove, a rack (15) cooperating with the gear (14) being fixedly mounted on the outer side of the slider, an electromagnet (16) being fixedly mounted on the outer side of the mounting plate (9) and below the rack (15), the bottom wall of the slide groove being fixedly connected to the slider via a spring (17), the slider being fixedly connected to the bottom wall of the slide groove via a shielding strip (18), the shielding strip (18) sealing the spring (17) in the slide groove.

4. The aeration tank for pig farm wastewater treatment according to claim 3 is characterized in that: The shielding strip (18) is specifically configured as an accordion cover.

5. The aeration tank for pig farm wastewater treatment according to claim 4, characterized in that: Side plates (21) are symmetrically fixedly mounted on the inner walls of both sides of the pool body (2), and cylinders (22) are rotatably mounted between adjacent side plates (21). The cylinders (22) are fixedly connected to the mounting plate (9) via a fixing plate (20), and a driving assembly for driving the cylinders (22) to rotate is provided on the outside.

6. The aeration tank for pig farm wastewater treatment according to claim 5, characterized in that: The driving component includes a pulling rope (23). A rope groove is formed in the middle of the cylinder (22). One end of the pulling rope (23) is fixed in the rope groove. The pulling rope (23) is wound in the rope groove. An installation frame corresponding to the pulling rope (23) is fixedly installed outside the bottom plate (1). A winding rod (24) is rotatably installed inside the installation frame. The winding rod (24) is fixedly connected to the other end of the pulling rope (23). A first motor (25) is fixedly installed outside the installation frame. The output shaft of the first motor (25) is fixedly connected to one end of the winding rod (24).

7. The aeration tank for pig farm wastewater treatment according to claim 6, characterized in that: The lifting component includes a plurality of second motors (26) fixedly connected to the top of the bottom plate (1). A plurality of threaded holes are formed in the extension frame (3). A lead screw (27) is threadedly connected in the threaded hole. One end of the lead screw (27) is fixedly connected to the top end of the output shaft of the second motor (26).

8. The aeration tank for pig farm wastewater treatment according to claim 7, characterized in that: A groove is formed on one side of the mounting plate (9) close to the air pipe (8). The groove is in a "mouth" shape. A rubber pad (19) is arranged in the groove. The rubber pad (19) abuts against the inner wall of the pool body (2).

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