Domestic sewage circulating treatment device based on biological treatment

Abstract

The invention discloses a domestic sewage circulation treatment device based on biological treatment, and relates to the technical field of sewage treatment.The domestic sewage circulation treatment device comprises a water tank, the rear portion of the water tank is fixedly connected with a water inlet pipe, the front portion of the water tank is fixedly connected with a water outlet pipe, and the top of the water tank is fixedly provided with a motor and fixedly connected with an air valve; a gas conveying pipe is fixedly connected to the top of the gas valve, a slotting sector plate is rotatably mounted at the bottom in the water tank, and a motor drives the slotting sector plate to swing back and forth through a cam, so that the intense degree in the mixing process of sewage and microorganism water liquid is reduced; meanwhile, a slotting fan plate is in contact with a driving rack so as to drive a large gear and an air pumping fan blade to rotate, so that the water liquid is aerated when the slotting fan plate pushes the water liquid to be concentrated at the position of a straight air pumping pipe, and intermittent aeration on microorganisms in the water liquid is realized while aeration is more uniform; the utilization efficiency of oxygen is improved as much as possible.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and specifically to a domestic sewage recycling treatment device based on biological treatment. Background Art

[0002] A domestic sewage recycling treatment device based on biological treatment is usually used for the recycling and purification treatment of domestic sewage. The purpose is to purify the water quality by microorganisms absorbing and decomposing harmful substances in the sewage.

[0003] The patent with the patent announcement number CN218434950U relates to the technical field of sewage treatment. The patent includes a housing, and two orifice plates are inserted into the interior of the housing. When in use, the orifice plates can filter the sewage in the housing. A crushing rod is rotatably connected to the upper part of the housing, and the crushing rod can crush the impurities in the sewage. Spray plates are fixed on both sides in the middle of the housing, and the spray plates can spray external biological liquid on the sewage. When this domestic sewage recycling treatment device based on biological treatment is in use, the user connects an external drainage pipe to the receiving pipe, and the external drainage pipe can transport domestic sewage into the interior of the housing. When the sewage is transported, the impurities in the sewage can be crushed by the crushing rod, and the crushed sewage is filtered by the orifice plate. Subsequently, the filtered liquid can come into contact with the liquid sprayed by the spray plate, and the liquid can cooperate with the sewage to penetrate through the orifice plate, realizing the full mixing of the liquid and the sewage. In the above patent, it can make the sewage to be treated fully mixed with the liquid containing microorganisms, thereby improving the treatment quality as much as possible. However, during the working process of this device, it can only continuously aerate the same position of the liquid, and the oxygen pumped in may float to the liquid surface before being fully absorbed in time, thus unable to improve the utilization efficiency of oxygen. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a domestic sewage recycling treatment device based on biological treatment, which solves the problems put forward in the above background art.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: A domestic sewage recycling treatment device based on biological treatment, including a water tank. A water inlet pipe is fixedly connected to the rear of the water tank, and a water outlet pipe is fixedly connected to the front of the water tank. A motor is fixedly installed on the top of the water tank, and an air valve is fixedly connected to the top of the water tank. An air delivery pipe is fixedly connected to the top of the air valve. Two slotted fan plates are rotatably installed at the bottom inside the water tank. A toggle plate is rotatably installed at the rear end of the slotted fan plate. A rack is slidably installed at the bottom inside the water tank. A large gear is rotatably connected to the bottom inside the water tank. A pump air pipe is rotatably installed at the bottom of the air valve. A pump air fan blade is fixedly connected to the circumferential surface of the pump air pipe. A valve rotating rod is fixedly connected to the circumferential surface of the pump air pipe. A valve control rod is fixedly installed at the control end of the air valve. The output end of the motor is fixedly connected to a gear one. A cam one is fixedly connected to the bottom of the gear one. A gear two is rotatably installed at the top inner wall of the water tank. A cam two is fixedly connected to the bottom of the gear two. By the contact of the slotted fan plate to drive the rack, thereby driving the large gear and the pump air fan blade to rotate, when the slotted fan plate pushes the water liquid to concentrate at the position of the pump air pipe, aeration of the water liquid is realized, so that the aeration is more uniform and at the same time intermittent aeration of the microorganisms in the water liquid is realized, and the utilization efficiency of oxygen is improved as much as possible.

[0006] According to the above technical solution, the rack is located on the movement track of the slotted fan plate. The two slotted fan plates are respectively located on the movement tracks of the cam one and the cam two. The rack meshes with the large gear. The gear one meshes with the gear two. The valve control rod contacts the valve rotating rod. The air delivery pipe is communicated with the pump air pipe. A return spring is arranged between the rack and the water tank. A volute spring is arranged between the slotted fan plate and the water tank. Pump air holes are opened at the top of the pump air fan blade. The pump air holes are communicated with the pump air pipe. Rectangular through holes are opened on the surface of the slotted fan plate. An air release hole is fixedly installed on the top of the water tank. An inner partition is fixedly installed inside the water tank. A filter plate is fixedly installed inside the water tank. The air release hole is used to prevent the accumulation of gas inside the water tank when the device works for a long time. The inner partition is used to separate the reaction area and the treatment area inside the water tank of the device, so that the whole process is carried out step by step to improve the overall working efficiency. The filter plate is used to filter the treated sewage to remove the residual materials and impurities therein.

[0007] According to the above technical solution, a cylinder is fixedly installed on the right side inside the water tank. A telescopic rotating rod is rotatably installed on the right side inside the water tank. A pneumatic piston is slidably installed on the inner wall of the cylinder. A check valve one is fixedly installed on the top of the pneumatic piston. An L-shaped air pipe penetrates through the top of the cylinder rotatably. By driving the pneumatic piston to slide through the telescopic rotating rod, the oxygen that has not been absorbed in time on the surface of the liquid level inside the water tank is recycled, thereby further improving the utilization efficiency of oxygen during the aeration process.

[0008] According to the above technical solution, a driving ring is slidably connected to the inner wall of the cylinder. The bottom circumferential surface of the L-shaped air pipe is fixedly connected with a spiral groove rod. The driving ring drives the spiral groove rod and the L-shaped air pipe to rotate, so that the L-shaped air pipe rotates while inhaling gas, thereby improving the gas inhalation rate of the L-shaped air pipe.

[0009] According to the above technical solution, the telescopic rotating rod is located on the movement track of the slotted fan plate. The bottom of the air piston is rotatably connected to the rear part of the telescopic rotating rod. The driving ring is located on the movement track of the air piston. A spiral groove is formed on the circumferential surface of the spiral groove rod. A transmission thin rod is fixedly connected to the inner wall of the driving ring. One end of the transmission thin rod close to the center of the driving ring is threadedly connected to the spiral groove. A check valve II is fixedly installed at the bottom of the L-shaped air pipe. The bottom of the driving ring is fixedly connected to the top of the air piston. A scroll spring II is arranged between the telescopic rotating rod and the water tank. The bottom of the air piston is fixedly connected with a recovery air pipe. The top of the recovery air pipe is communicated with the check valve I. The recovery air pipe is communicated with the bottom of the pump air pipe. The rebounding force of the scroll spring II realizes the reciprocating rotation of the telescopic rotating rod, thereby realizing the reciprocating sliding of the air piston. The check valve II is used to inhale the air on the liquid surface into the cylinder, and the check valve I is used to pump the air in the cylinder back into the water through the recovery air pipe.

[0010] According to the above technical solution, an aging cleaning device is arranged inside the water tank. The aging cleaning device includes an L-shaped connecting rod, a circular filter plate, a rotating connecting rod and an L-shaped scraping plate. The L-shaped connecting rod is rotatably connected to the rear part of the telescopic rotating rod. The circular filter plate is fixedly installed on the circumferential surface of the pump air pipe. The rotating connecting rod is rotatably connected to the circumferential surface of the pump air pipe. The L-shaped scraping plate is rotatably connected to the bottom of the rotating connecting rod. The telescopic rotating rod drives the circular filter plate to slide up and down through the L-shaped connecting rod, so that the microorganisms floating on the water surface due to adsorption on the bubbles can be pressed back into the water, avoiding the reduction of the reproduction rate caused by the microorganisms floating on the water surface.

[0011] According to the above technical solution, the aging cleaning device further includes a transfer box, an open box and a perforated pressing plate. The transfer box is fixedly installed on the right side of the water tank. The open box is slidably installed on the right inner wall of the water tank. The perforated pressing plate is rotatably installed on the right inner wall of the water tank. The open box and the transfer box realize the transfer of some microorganisms that have been floating on the liquid surface for a long time due to aging, separating them from the water to avoid occupying the reproduction space of other microorganisms.

[0012] According to the above technical solution, the top of the L-shaped connecting rod is slidably connected to the bottom of the circular filter plate, the bottom of the L-shaped scraper contacts the top of the circular filter plate, the front end of the opening box contacts the bottom of the perforated pressure plate, the top of the perforated pressure plate contacts the bottom of the circular filter plate, and a reset spring 2 is arranged between the opening box and the water tank. The perforated pressure plate contacts the opening box and drives it to slide, so that the opening box can be closed when the circular filter plate slides downward, thereby preventing part of the water from flowing into the transfer box through the opening box when the slotted fan plate stirs the water.

[0013] The present invention provides a domestic sewage circulation treatment device based on biological treatment. It has the following beneficial effects: (1) In this invention, the motor drives the slotted fan plate to swing back and forth through the cam, thereby reducing the intensity of the mixing process between sewage and microbial water. At the same time, the slotted fan plate drives the rack to rotate through the contact of the slotted fan plate, thereby driving the large gear and the pump air fan blade to rotate. When the slotted fan plate pushes the water to the position of the concentrated straight pump air pipe, the water is aerated, thereby making the aeration more uniform and realizing intermittent aeration of the microorganisms in the water, thereby maximizing the oxygen utilization efficiency.

[0014] (2) In this invention, the slotted fan plate drives the telescopic rotating rod and the air piston to move through contact, thereby realizing the re-collection and utilization of oxygen on the surface of the water in the water tank that has not been absorbed by microorganisms, further improving the utilization efficiency of oxygen. At the same time, the air piston drives the spiral groove rod and the L-shaped air pipe to rotate through the driving ring, so that the L-shaped air pipe can more fully absorb the oxygen on the surface of the water while rotating, thereby improving the efficiency of oxygen intake and recovery.

[0015] (3) In this invention, the telescopic rotating rod drives the circular filter plate to slide up and down through the L-shaped top rod, so that the microorganisms floating on the water surface due to adsorption on the bubbles can be pressed back into the water liquid, thereby preventing the microorganisms from floating on the water surface and reducing the reproduction rate. At the same time, the L-shaped scraper will scrape off the microorganisms that have been floating on the liquid surface for a long time due to aging and collect them into the transfer box through the open box, thereby discharging the aged microorganisms in advance to prevent them from occupying the reproduction space of other microorganisms, further improving the overall processing efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the water tank of the present invention; Figure 3 This is a schematic diagram of the position structure of the slotted fan plate of the present invention; Figure 4 This is a schematic diagram of the structure of the pump air pipe and the pump air fan blade of the present invention; Figure 5It is a schematic diagram of the structure of the cylinder and the gas piston of the present invention; Figure 6 This is a schematic diagram of the valve control rod and the air valve structure of the present invention; Figure 7 This is a schematic diagram of the structure of the aging cleaning device of the present invention; Figure 8 It is a schematic diagram of the internal structure of the cylinder of the present invention.

[0017] In the figure: 1, water tank; 2, water inlet pipe; 3, water outlet pipe; 4, motor; 5, air valve; 6, air pipe; 7, air vent; 8, inner partition; 9, filter plate; 1001, slotted fan plate; 1002, toggle plate; 1003, rack; 1004, large gear; 1005, pump air fan blade; 1006, valve lever; 1007, valve control lever; 1008, pump air pipe; 11, gear one; 12, cam one; 13 , gear 2; 14, cam 2; 1501, cylinder; 1502, telescopic rotating rod; 1503, gas piston; 1504, one-way valve 1; 1505, drive ring; 1506, spiral groove rod; 1507, L-shaped air pipe; 1601, L-shaped connecting rod; 1602, transfer box; 1603, circular filter plate; 1604, rotating connecting rod; 1605, L-shaped scraper; 1606, opening box; 1607, hole pressing plate. DETAILED DESCRIPTION

[0018] 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.

[0019] See also Figures 1 - 8, an embodiment of the present invention is: a domestic sewage recycling treatment device based on biological treatment, including a water tank 1, a water inlet pipe 2 is fixedly connected to the rear of the water tank 1, a water outlet pipe 3 is fixedly connected to the front of the water tank 1, a motor 4 is fixedly installed on the top of the water tank 1, a gas valve 5 is fixedly connected to the top of the water tank 1, an air delivery pipe 6 is fixedly connected to the top of the gas valve 5, two slotted fan plates 1001 are rotatably installed at the bottom inside the water tank 1, a toggle plate 1002 is rotatably installed at the rear end of the slotted fan plate 1001, a rack 1003 is slidably installed at the bottom inside the water tank 1, a large gear 1004 is rotatably connected to the bottom inside the water tank 1, a pump air pipe 1008 is rotatably installed at the bottom of the gas valve 5, a pump air fan blade 1005 is fixedly connected to the circumferential surface of the pump air pipe 1008, a valve rotating rod 1006 is fixedly connected to the circumferential surface of the pump air pipe 1008, a valve control rod 1007 is fixedly installed at the control end of the gas valve 5, the output end of the motor 4 is fixedly connected to a gear one 11, a cam one 12 is fixedly connected to the bottom of the gear one 11, a gear two 13 is rotatably installed at the top inner wall of the water tank 1, a cam two 14 is fixedly connected to the bottom of the gear two 13. By the contact of the slotted fan plate 1001 to drive the rack 1003, thereby driving the large gear 1004 and the pump air fan blade 1005 to rotate, when the slotted fan plate 1001 pushes the water liquid to concentrate at the position of the pump air pipe 1008, aeration of the water liquid is realized, so that the aeration is more uniform while realizing intermittent aeration of the microorganisms in the water liquid, and the utilization efficiency of oxygen is improved as much as possible.

[0020] The rack 1003 is located on the movement track of the slotted fan plate 1001, the two slotted fan plates 1001 are respectively located on the movement tracks of the cam one 12 and the cam two 14, the rack 1003 meshes with the large gear 1004, the gear one 11 meshes with the gear two 13, the valve control rod 1007 contacts the valve rotating rod 1006, the air delivery pipe 6 is communicated with the pump air pipe 1008, a return spring is arranged between the rack 1003 and the water tank 1, a scroll spring is arranged between the slotted fan plate 1001 and the water tank 1, pump air holes are opened at the top of the pump air fan blade 1005, the pump air holes are communicated with the pump air pipe 1008, rectangular through holes are opened on the surface of the slotted fan plate 1001, an air vent hole 7 is fixedly installed on the top of the water tank 1, an inner partition plate 8 is fixedly installed inside the water tank 1, a filter plate 9 is fixedly installed inside the water tank 1. The air vent hole 7 is used to prevent the accumulation of gas inside the water tank 1 during the long-term operation of the device, the inner partition plate 8 is used to separate the reaction area and the treatment area inside the water tank 1 of the device, so that the whole process is carried out step by step to improve the overall working efficiency, and the filter plate 9 is used to filter the treated sewage to remove the residual materials and impurities therein.

[0021] On the right side inside the water tank 1, a cylinder 1501 is fixedly installed. On the right side inside the water tank 1, a telescopic rotating rod 1502 is rotatably installed. Inside the cylinder 1501, a pneumatic piston 1503 is slidably installed. On the top of the pneumatic piston 1503, a check valve 1504 is fixedly installed. The cylinder 1501 is rotatably penetrated through the top by an L-shaped air pipe 1507. By driving the pneumatic piston 1503 to slide through the telescopic rotating rod 1502, the oxygen on the surface of the liquid level inside the water tank 1 that has not been absorbed in time is recycled, thereby further improving the utilization efficiency of oxygen during the aeration process.

[0022] A driving ring 1505 is slidably connected to the inner wall of the cylinder 1501. A spiral groove rod 1506 is fixedly connected to the circumferential surface of the bottom of the L-shaped air pipe 1507. By driving the spiral groove rod 1506 and the L-shaped air pipe 1507 to rotate through the driving ring 1505, the L-shaped air pipe 1507 rotates while inhaling gas, thereby increasing the rate of gas inhalation of the L-shaped air pipe 1507.

[0023] The telescopic rotating rod 1502 is located on the movement track of the slotted fan plate 1001. The bottom of the pneumatic piston 1503 is rotatably connected to the rear part of the telescopic rotating rod 1502. The driving ring 1505 is located on the movement track of the pneumatic piston 1503. A spiral groove is provided on the circumferential surface of the spiral groove rod 1506. A transmission thin rod is fixedly connected to the inner wall of the driving ring 1505. One end of the transmission thin rod close to the center of the driving ring 1505 is threadedly connected to the spiral groove. A check valve 2 is fixedly installed at the bottom of the L-shaped air pipe 1507. The bottom of the driving ring 1505 is fixedly connected to the top of the pneumatic piston 1503. A scroll spring 2 is provided between the telescopic rotating rod 1502 and the water tank 1. The bottom of the pneumatic piston 1503 is fixedly connected to a recovery air pipe. The top of the recovery air pipe is communicated with the check valve 1504. The recovery air pipe is communicated with the bottom of the pump air pipe 1008. The elastic force of the scroll spring 2 realizes the reciprocating rotation of the telescopic rotating rod 1502, thereby realizing the reciprocating sliding of the pneumatic piston 1503. The check valve 2 is used to inhale the air on the liquid surface into the cylinder 1501, and the check valve 1504 is used to pump the air in the cylinder 1501 back into the water through the recovery air pipe.

[0024] An aging cleaning device is provided inside the water tank 1. The aging cleaning device includes an L-shaped connecting rod 1601, a circular filter plate 1603, a rotating connecting rod 1604, and an L-shaped scraping plate 1605. The L-shaped connecting rod 1601 is rotatably connected to the rear part of the telescopic rotating rod 1502. The circular filter plate 1603 is fixedly installed on the circumferential surface of the pump air pipe 1008. The rotating connecting rod 1604 is rotatably connected to the circumferential surface of the pump air pipe 1008. The L-shaped scraping plate 1605 is rotatably connected to the bottom of the rotating connecting rod 1604. The telescopic rotating rod 1502 drives the circular filter plate 1603 to slide up and down reciprocally through the L-shaped connecting rod 1601, so that the microorganisms floating on the water surface due to being adsorbed on the bubbles can be pressed back into the water liquid, avoiding the reduction of the reproduction rate due to the microorganisms floating on the water surface.

[0025] The aging cleaning device further includes a transfer box 1602, an opening box 1606, and an opening pressing plate 1607. The transfer box 1602 is fixedly installed on the right side of the water tank 1. The opening box 1606 is slidably installed on the right inner wall of the water tank 1. The opening pressing plate 1607 is rotatably installed on the right inner wall of the water tank 1. The opening box 1606 and the transfer box 1602 are used to transfer some microorganisms that have been floating on the liquid surface for a long time due to aging, and separate them from the water liquid to avoid occupying the reproduction space of other microorganisms.

[0026] The top of the L-shaped connecting rod 1601 is slidably connected to the bottom of the circular filter plate 1603. The bottom of the L-shaped scraper 1605 contacts the top of the circular filter plate 1603. The front end of the opening box 1606 contacts the bottom of the opening pressing plate 1607. The top of the opening pressing plate 1607 contacts the bottom of the circular filter plate 1603. A second reset spring is provided between the opening box 1606 and the water tank 1. The opening pressing plate 1607 contacts the opening box 1606 and drives it to slide, so that when the circular filter plate 1603 slides downward, the opening box 1606 can be closed, avoiding some water liquid flowing into the transfer box 1602 through the opening box 1606 when the slotted fan plate 1001 stirs the water liquid.

[0027] When working: When the device enters the working state, the water containing microorganisms and the sewage to be treated enter the water tank 1 through the water inlet pipe 2, and the motor 4 is started. The motor 4 drives the gear 11 to rotate, and the rotation of the gear 11 drives the cam 12 to rotate. During the rotation, the convex surface of the cam 12 contacts the side of the slotted fan plate 1001, thereby driving the slotted fan plate 1001 to rotate. Since the toggle plate 1002 is a unidirectional rotation, the rotation of the slotted fan plate 1001 drives the toggle plate 1002 to rotate together. The rotation of the slotted fan plate 1001 and the toggle plate 1002 drives the water to move together by squeezing the water, thereby realizing a relatively gentle stirring effect on the water containing microorganisms, and at the same time, the mixed liquid of the water containing microorganisms and sewage is moved closer to the pump air pipe 1008. The rotation of gear 1 11 drives gear 2 13 to rotate in the opposite direction to gear 1 11, and the rotation of gear 2 13 drives cam 2 14 to rotate. During the rotation process, the convex surface of cam 2 14 contacts the side of slotted fan plate 1001, thereby driving the slotted fan plate 1001 on the rear side to rotate. The rotation of slotted fan plate 1001 on the rear side squeezes the water so that the water moves toward the pump air pipe 1008. At the same time, the rotation of slotted fan plate 1001 contacts rack 1003 and drives it to slide in the right direction. The sliding of rack 1003 drives large gear 1004 to rotate, and the rotation of large gear 1004 drives pump air pipe 1 008 rotates, and the rotation of the pump air pipe 1008 drives the valve rotating rod 1006 to rotate. During the rotation process, the valve rotating rod 1006 drives the valve control rod 1007 to rotate through contact, so that when the valve control rod 1007 is opened, oxygen is pumped out from the air supply pipe 6 through the air valve 5 and then through the pump air pipe 1008, and finally from the pump air hole of the pump air fan blade 1005. The rotation of the pump air pipe 1008 drives the pump air fan blade 1005 to rotate together. The rotation of the pump air fan blade 1005 realizes its rotation while pumping air, so that the pumped oxygen can be more fully mixed with the water, thereby increasing the oxygen content in the water to increase the reproduction rate of microorganisms. When gear 11 continues to drive cam 12 to rotate together, the convex surface of cam 12 disengages from the side of the slotted fan plate 1001, so that the slotted fan plate 1001 rotates in the opposite direction to that just now under the rebound force of the spiral spring, and when the slotted fan plate 1001 rotates in the opposite direction, the toggle plate 1002 rotates under the squeezing force of the water, and after the toggle plate 1002 rotates, the water will move from one side of the slotted fan plate 1001 to the other side through the rectangular through hole, so that when the slotted fan plate 1001 returns to its initial position, the water is not moved together, thereby reducing the resistance of the slotted fan plate 1001 when it returns to its initial position, thereby improving the overall working stability of the device.

[0028] When the grooved fan plate 1001 rotates, its side contacts the front end of the telescopic rotating rod 1502 and drives the front end of the telescopic rotating rod 1502 to rotate downward. When the front end of the telescopic rotating rod 1502 rotates downward, its rear end will rotate downward. When the rear end of the telescopic rotating rod 1502 rotates downward, it drives the air piston 1503 to slide downward. When the air piston 1503 slides downward, it will inhale the gas at the top inside the water tank 1 into the cylinder 1501 through the check valve II. At the same time, the downward sliding of the air piston 1503 drives the driving ring 1505 to slide downward together. Since the transmission thin rod is threadedly connected to the spiral groove of the spiral groove rod 1506, when the driving ring 1505 slides downward, it drives the spiral groove rod 1506 to rotate through the transmission thin rod. The rotation of the spiral groove rod 1506 drives the L-shaped air pipe 1507 to rotate together, that is, it realizes that while the gas enters the cylinder 1501 from the check valve II, the L-shaped air pipe 1507 drives the check valve II to rotate, so that more air enters the cylinder 1501 through the check valve II in the same time, improving the absorption and utilization efficiency of the air on the liquid surface. When the grooved fan plate 1001 returns to the initial position, its side is separated from the front end of the telescopic rotating rod 1502. After the separation, the telescopic rotating rod 1502 rotates in the opposite direction under the elastic force of the scroll spring II. The rotation of the telescopic rotating rod 1502 in the opposite direction drives the air piston 1503 to slide upward. When the air piston 1503 slides upward, it will squeeze the gas inside the cylinder 1501, so that the gas finally discharges from the pump air hole through the check valve I 1504, the recovery air pipe and the pump air pipe 1008, that is, it realizes pumping out the gas inhaled into the cylinder 1501 from the pump air hole again, enabling the oxygen that has not been absorbed in time to be recycled, thereby improving the utilization efficiency of oxygen.

[0029] When the rear end of the telescopic rotating rod 1502 rotates downward, the rotation of the telescopic rotating rod 1502 drives the L-shaped connecting rod 1601 to rotate and slide downward at the same time. When the L-shaped connecting rod 1601 slides downward, it drives the circular filter plate 1603 to slide downward together. When the circular filter plate 1603 slides downward, the bottom of it will squeeze the microorganisms floating on the liquid surface and press them back into the water liquid, avoiding the microorganisms floating on the liquid surface and thus reducing their reproduction rate. At the same time, when the circular filter plate 1603 slides downward, it drives the perforated pressing plate 1607 to rotate downward through contact. When the perforated pressing plate 1607 rotates downward, it drives the opening box 1606 to slide to the right through contact. After the opening box 1606 slides to the right, its opening is blocked by the inner wall of the water tank 1, so the slotted fan plate 1001 is prevented from stirring the water liquid and the water liquid flows into the transfer box 1602 from the opening box 1606. Since the slotted fan plate 1001 drives the water liquid to move together when it rotates, some microorganisms that have been floating on the liquid surface for a long time due to aging will move to the top of the circular filter plate 1603 under the push of the slotted fan plate 1001. When the rear end of the telescopic rotating rod 1502 rotates upward, it drives the L-shaped connecting rod 1601 to slide upward. When the L-shaped connecting rod 1601 slides upward, it drives the circular filter plate 1603 to slide upward together. After the circular filter plate 1603 slides upward, the bottom of it is separated from the perforated pressing plate 1607. After the separation, the opening box 1606 slides to the left under the elastic force of the second reset spring, so that the opening box 1606 is opened and communicated with the transfer box 1602. At the same time, the rear slotted fan plate 1001 drives the large gear 1004 and the pump air pipe 1008 to rotate clockwise through the rack 1003. When the pump air pipe 1008 rotates clockwise, it drives the circular filter plate 1603 to rotate together. Then the L-shaped scraper 1605 scrapes the microorganisms on the top of the circular filter plate 1603 through contact. At the same time, when the circular filter plate 1603 slides upward, it drives the rotating connecting rod 1604 to rotate upward through contact with the L-shaped scraper 1605. Therefore, the L-shaped scraper 1605 scrapes the microorganisms on the top of the circular filter plate 1603 and slides to the right at the same time. When the L-shaped scraper 1605 slides to the right, it scrapes the microorganisms from the top of the circular filter plate 1603 through contact and flows into the transfer box 1602 through the opening box 1606. Thus, it realizes the transfer of some microorganisms that have been floating on the liquid surface for a long time due to aging to discharge them from the water liquid in advance, avoiding occupying the reproduction space of other microorganisms and improving the overall treatment efficiency of the device.

[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A domestic sewage recycling treatment device based on biological treatment, comprising a water tank, characterized in that: A water inlet pipe is fixedly connected to the rear of the water tank, a water outlet pipe is fixedly connected to the front of the water tank, a motor is fixedly installed on the top of the water tank, an air valve is fixedly connected to the top of the water tank, an air delivery pipe is fixedly connected to the top of the air valve, two slotted fan plates are rotatably installed at the bottom inside the water tank, a toggle plate is rotatably installed at the rear end of the slotted fan plate, a rack is slidably installed at the bottom inside the water tank, a large gear is rotatably connected to the bottom inside the water tank, a pump air pipe is rotatably installed at the bottom of the air valve, a pump air fan blade is fixedly connected to the circumferential surface of the pump air pipe, a valve rotating rod is fixedly connected to the circumferential surface of the pump air pipe, a valve control rod is fixedly installed at the control end of the air valve, an output end of the motor is fixedly connected to a gear one, a cam one is fixedly connected to the bottom of the gear one, a gear two is rotatably installed at the top inner wall of the water tank, and a cam two is fixedly connected to the bottom of the gear two.

2. The domestic sewage recycling treatment device based on biological treatment according to claim 1, wherein: The rack is located on the movement track of the slotted fan plate, the two slotted fan plates are respectively located on the movement tracks of the cam one and the cam two, the rack meshes with the large gear, the gear one meshes with the gear two, the valve control rod contacts the valve rotating rod, the air delivery pipe is communicated with the pump air pipe, a return spring is arranged between the rack and the water tank, a scroll spring is arranged between the slotted fan plate and the water tank, a pump air hole is opened at the top of the pump air fan blade, the pump air hole is communicated with the pump air pipe, a rectangular through hole is opened on the surface of the slotted fan plate, an air vent hole is fixedly installed on the top of the water tank, an inner partition board is fixedly installed inside the water tank, and a filter board is fixedly installed inside the water tank.

3. The circulating sewage treatment device for domestic sewage based on biological treatment according to claim 2, characterized in that: A cylinder is fixedly installed on the right side inside the water tank, a telescopic rotating rod is rotatably installed on the right side inside the water tank, a pneumatic piston is slidably installed on the inner wall of the cylinder, a check valve one is fixedly installed at the top of the pneumatic piston, and an L-shaped air pipe penetrates through the top of the cylinder in a rotating manner.

4. The domestic sewage recycling treatment device based on biological treatment according to claim 3, wherein: A driving ring is slidably connected to the inner wall of the cylinder, and a spiral groove rod is fixedly connected to the circumferential surface of the bottom of the L-shaped air pipe.

5. The circulating treatment device for domestic sewage based on biological treatment according to claim 4, wherein: The telescopic rotating rod is located on the movement track of the slotted fan plate, the bottom of the pneumatic piston is rotatably connected to the rear part of the telescopic rotating rod, the driving ring is located on the movement track of the pneumatic piston, a spiral groove is opened on the circumferential surface of the spiral groove rod, a transmission thin rod is fixedly connected to the inner wall of the driving ring, and one end of the transmission thin rod close to the center of the driving ring is in threaded connection with the spiral groove. A check valve two is fixedly installed at the bottom of the L-shaped air pipe, the bottom of the driving ring is fixedly connected to the top of the pneumatic piston, a scroll spring two is arranged between the telescopic rotating rod and the water tank, a recovery air pipe is fixedly connected to the bottom of the pneumatic piston, the top of the recovery air pipe is communicated with the check valve one, and the recovery air pipe is communicated with the bottom of the pump air pipe.

6. The domestic sewage recycling treatment device based on biological treatment according to claim 5, characterized in that: An aging cleaning device is arranged inside the water tank. The aging cleaning device includes an L-shaped connecting rod, a circular filter plate, a rotating connecting rod and an L-shaped scraping plate. The L-shaped connecting rod is rotatably connected to the rear part of the telescopic rotating rod, the circular filter plate is fixedly installed on the circumferential surface of the pump air pipe, the rotating connecting rod is rotatably connected to the circumferential surface of the pump air pipe, and the L-shaped scraping plate is rotatably connected to the bottom of the rotating connecting rod.

7. The circulating treatment device for domestic sewage based on biological treatment according to claim 6, wherein: The aging cleaning device further includes a transfer box, an opening box, and an opening pressing plate. The transfer box is fixedly installed on the right side of the water tank. The opening box is slidably installed on the right inner wall of the water tank. The opening pressing plate is rotatably installed on the right inner wall of the water tank.

8. The circulating sewage treatment device for domestic sewage based on biological treatment according to claim 7, characterized in that: The top of the L-shaped connecting rod is slidably connected to the bottom of the circular filter plate. The bottom of the L-shaped scraper contacts the top of the circular filter plate. The front end of the opening box contacts the bottom of the opening pressing plate. The top of the opening pressing plate contacts the bottom of the circular filter plate. A second reset spring is provided between the opening box and the water tank.

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