Domestic sewage treatment device

Abstract

The invention relates to the technical field of sewage treatment, and discloses a domestic sewage treatment device which comprises a sewage treatment box, a cleaning box, a roller conveying part, a guide roller and an oil absorption film, two symmetrically-arranged conveying roller pieces are installed on the sewage treatment box, two symmetrically-arranged guide rollers are rotationally installed in the sewage treatment box, the conveying roller pieces and the guide rollers are sleeved with the oil absorption film and matched with the oil absorption film, and first openings for the oil absorption film to enter and exit are formed in the two sides of the sewage treatment box correspondingly. A driving piece for driving the conveying roller piece to drive the oil absorption film to operate is mounted on the sewage treatment box. According to the invention, sewage is introduced into the sewage treatment box, the oil absorption film is in contact with the sewage liquid level, and the driving part is utilized to drive the conveying roller part to enable the oil absorption film to continuously operate, so that grease in sewage is continuously adsorbed, and compared with a traditional filter screen filtering mode, the method has the advantages that the problem of filter screen blockage is avoided, the filter screen does not need to be frequently replaced, and the cost is reduced. And the continuity and high efficiency of cleaning the grease in the sewage are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to a domestic sewage treatment device. Background Art

[0002] Domestic sewage refers to various wastewaters produced by people in their daily lives, mainly including bath water, laundry water, kitchen wastewater, etc. These sewages contain a large amount of organic matter, suspended matter, pathogens, nitrogen, phosphorus and other pollutants. If domestic sewage is not treated and directly discharged into natural water bodies, it will seriously damage the water quality and self-purification capacity of the water body, leading to eutrophication of the water body, affecting the growth of aquatic organisms, and even endangering human health. When treating sewage, suspended solids and some organic matter in sewage are mainly removed through equipment such as screens and sedimentation tanks. Sewage first passes through the screen, which can intercept larger solid impurities to prevent them from entering subsequent treatment facilities. Then, the sewage enters the sedimentation tank, and gravity is used to settle the suspended solids to the bottom of the tank; In the process of domestic sewage treatment, since sewage contains grease, filters are usually used for filtration. However, grease has strong adhesion and will adhere to the filter in large quantities during the filtration process, causing the pores of the filter to be gradually blocked. This blockage phenomenon will reduce the filtration efficiency of the filter, making it impossible to effectively remove the grease in the sewage. After the filter is blocked, it needs to be replaced and cleaned, which affects the subsequent sewage treatment efficiency.

[0003] In order to solve the above problems, a domestic sewage treatment device is proposed in this application. Summary of the invention

[0004] The present invention proposes a domestic sewage treatment device, which solves the problem in the related art that filtering grease in sewage through a filter screen will cause the pores of the filter screen to be gradually blocked. This blockage phenomenon will reduce the filtering efficiency of the filter screen, making it impossible to effectively remove the grease in the sewage, and the filter screen needs to be replaced and cleaned after being blocked, thereby affecting the subsequent sewage treatment efficiency.

[0005] The invention provides a domestic sewage treatment device, comprising a sewage treatment tank, a cleaning tank, a conveying roller, a guide roller and an oil absorption membrane; The sewage treatment box is provided with two symmetrically arranged conveying rollers, two symmetrically arranged guide rollers are rotatably arranged in the sewage treatment box, the oil absorption membrane is sleeved on the conveying rollers and the guide rollers and cooperates with them, both sides of the sewage treatment box are provided with first openings for the oil absorption membrane to enter and exit, and the sewage treatment box is provided with a driving member for driving the conveying rollers to drive the oil absorption membrane to operate; The conveying roller and the oil absorption film on one side of the sewage treatment tank extend into the cleaning box, a pressure roller is rotatably installed in the cleaning box to press against the oil absorption film on the outer periphery of the conveying roller, and a cleaning component is installed on the cleaning box to spray de-oiling liquid onto the oil absorption film; An aeration assembly is installed at the bottom of the sewage treatment tank, and the aeration assembly includes an impeller member and a diverter aeration member. The impeller member is installed inside the aeration assembly, and the diverter aeration member is connected to the top of the aeration assembly. The impeller member and the conveyor roller member are connected through a second transmission member. When the driving member drives the conveyor roller member to rotate, the impeller member is driven to rotate through the second transmission member to guide the water flow into the aeration assembly and disperse the aeration from the center to the surrounding through the diverter aeration member.

[0006] As a further optimization scheme of the present invention, the aeration assembly also includes an aeration cylinder, a partition, a linkage, an air nozzle, a liquid inlet pipe and a stirring rod. The aeration cylinder is installed at the bottom of the sewage treatment tank and is located below the oil absorption membrane. The partition is installed in the aeration cylinder and divides its interior into an independent assembly chamber and a flow chamber. The impeller member is rotatably installed on the partition and placed in the flow chamber. A linkage is provided between the impeller member and the second transmission member. The diverter aeration member is installed on the top of the aeration cylinder and communicated with the flow chamber. The side of the aeration cylinder is connected to a liquid inlet pipe connected to the flow chamber. The partition is installed with an air nozzle. The sewage treatment tank is installed with an air supply member for supplying air to the air nozzle. A stirring rod connected to the impeller member is rotatably installed on the diverter aeration member, and a stirring plate is installed on the periphery of the stirring rod.

[0007] As a further optimization scheme of the present invention, the impeller member includes a first shaft and an impeller body, the first shaft is rotatably mounted on the partition, the impeller body located in the flow chamber is mounted on the first shaft, the bottom end of the first shaft extends into the assembly chamber and is mounted with a first bevel gear, and the first bevel gear cooperates with the linkage member; The linkage member includes a second bevel gear and a second shaft rod, one end of the second shaft rod rotates through the outer circumference of the aeration cylinder and is installed with a second bevel gear located in the assembly chamber and meshing with the first bevel gear, and the other end of the second shaft rod is connected to the second transmission member.

[0008] As a further optimization scheme of the present invention, the diversion aeration element includes a diversion cylinder, which is installed on the top of the aeration cylinder and connected to the flow chamber. The diversion cylinder is connected to aeration pipes on all sides, and aeration pipes are provided with a number of aeration holes arranged at intervals. The stirring rod is rotatably connected to the diversion cylinder, and the bottom end of the stirring rod is connected to the top of the first shaft rod. The rotation path of the stirring plate is located above the aeration pipe.

[0009] As a further optimization scheme of the present invention, the air supply component includes an air pump and an air supply pipe, the air nozzle is located below the impeller body, the air pump is installed on the sewage treatment tank, the air outlet end of the air pump is connected to the air supply pipe, and the air supply pipe is connected to the air nozzle.

[0010] As a further optimization scheme of the present invention, the conveying roller member includes an assembly block, a first rotating shaft and a conveying roller. Two symmetrically arranged assembly blocks are installed on both sides of the sewage treatment tank. The adjacent sides of the two assembly blocks are rotatably connected with the first rotating shaft. The conveying roller is fixed between the two first rotating shafts. The oil absorption film is sleeved on the two conveying rollers and the two guide rollers and cooperates with them. The pressure roller presses against the oil absorption film on the periphery of the conveying roller on one side of the sewage treatment tank. A second opening for the oil absorption film to pass through is opened on the side of the cleaning box close to the sewage treatment tank. Second rotating shafts rotatably connected to the inner wall of the sewage treatment tank are installed at both ends of the guide roller. The driving member comprises a motor, the motor is mounted on a side of one of the assembly blocks, and a driving end of the motor is connected to an end of one of the first rotating shafts; The second transmission member includes a second driving wheel, a second driven wheel and a second conveyor belt. Another of the first rotating shafts rotates and passes through another of the assembly blocks. The second driving wheel is fixed to an end of the first rotating shaft away from the conveying roller. An end of the second shaft rod away from the second bevel gear rotates and passes through the side of the sewage treatment tank and is fixed with a second driven wheel. A second conveyor belt is matched between the second driving wheel and the second driven wheel.

[0011] As a further optimization scheme of the present invention, the cleaning assembly includes a liquid supply tank, a spray pipe, a liquid supply member, a stirring paddle, a first transmission member and a sealing cover, the liquid supply tank is installed on the top of the cleaning tank, the spray pipe is installed in the cleaning tank and is located above the pressure roller and the conveying roller, the bottom of the spray pipe is connected to a plurality of nozzles arranged at intervals and arranged toward the oil absorption membrane, the liquid supply tank is installed with a liquid supply member for supplying de-oiling liquid to the spray pipe, the top of the cleaning assembly is provided with a liquid inlet, and the liquid inlet is sealed with a sealing cover; A stirring paddle is rotatably installed in the liquid supply box, and the pressure roller is transmission-connected to the stirring paddle via a first transmission member.

[0012] As a further optimization scheme of the present invention, the liquid supply component includes a water pump and a liquid supply pipe. The water pump is installed at the bottom of one end of the liquid supply box and is connected to its interior. The liquid outlet end of the water pump is connected to the liquid supply pipe connected to the spray pipe.

[0013] As a further optimization scheme of the present invention, the first transmission member includes a first driving wheel, a first driven wheel and a first conveyor belt, the stirring paddle is horizontally arranged in the liquid supply box, and the two ends of the stirring paddle are respectively rotatably connected to the two ends of the liquid supply box, and one end of the stirring paddle rotates through one end of the liquid supply box, and a third rotating shaft is installed at both ends of the pressure roller, and the ends of the two third rotating shafts are respectively rotatably connected to the inner walls of the two sides of the cleaning box, and one end of the third rotating shaft rotates through the side of the pressure roller, the first driving wheel is fixed at one end of the third rotating shaft, the first driven wheel is fixed at one end of the stirring paddle, and a first conveyor belt is matched between the first driving wheel and the first driven wheel, and the wheel diameter of the first driven wheel is larger than the wheel diameter of the first driving wheel.

[0014] As a further optimization solution of the present invention, the bottom of the cleaning box is connected to a liquid drain pipe, and an inclined liquid guide seat is installed at the bottom of the cleaning box, and the downward inclined end of the liquid guide seat is arranged toward the liquid drain pipe; The bottom of the sewage treatment box is connected with a water inlet pipe and a drain pipe which are communicated with the interior of the sewage treatment box, and valve bodies are installed on the drain pipe, the water inlet pipe and the drain pipe.

[0015] The above technical solution of the present invention has the following beneficial technical effects: 1. The present invention introduces sewage into the sewage treatment tank, makes the oil absorption film contact with the sewage liquid surface, and uses the driving part to drive the conveying roller part to make the oil absorption film continuously operate, thereby realizing continuous adsorption of grease in sewage. Compared with the traditional filter screen filtering method, this method will not cause the problem of filter screen clogging, and does not need to frequently replace the filter screen, thereby ensuring the continuity and high efficiency of grease cleaning in sewage; 2. When the oil absorption film adheres to the oil in the sewage and runs into the cleaning box, the grease adhered to the oil absorption film can be squeezed by the pressure roller pressed against the conveying roller, and the cleaning component sprays the degreasing agent at the same time, which can quickly and effectively remove the grease on the oil absorption film, realize the timely cleaning and reuse of the oil absorption film, further improve the oil removal efficiency, and realize the continuous cleaning of grease in sewage; 3. When the driving member drives the conveying roller member to operate, the second transmission member can drive the impeller member in the aeration assembly to rotate, guide the sewage into it, promote the water flow to move upward, and disperse from the center to the surroundings through the diversion aeration member for aeration. The tiny bubbles generated during aeration will adhere to the grease particles. Since the grease itself is hydrophobic, the bubbles will increase the buoyancy of the grease particles, causing them to float to the water surface quickly. In this way, the grease can form an oil film on the water surface, which is convenient for the adsorption of the oil absorption film. In addition, the aeration is dispersed from the center to the surroundings, so that the bubbles can be evenly distributed on the entire cross-section of the sewage, which can ensure that the grease particles in the sewage can contact the bubbles and be brought to the water surface, avoiding the situation where the grease in the local area cannot float; 4. The present invention adopts a recycling method of oil absorption membrane adsorption and cleaning, thereby avoiding the additional cost caused by the need to replace the filter screen due to frequent clogging during the traditional filter filtering process. At the same time, the cleaning process of the oil absorption membrane is simple and efficient, which can be achieved by roller squeezing and degreasing agent spraying, without the need for complicated disassembly and cleaning steps, greatly reducing the maintenance difficulty and operating cost of the equipment. In addition, the optimized aeration process reduces the need for secondary treatment caused by the inability of local oil to float up, further reducing the overall cost of sewage treatment, making the entire sewage treatment system more economical and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a domestic sewage treatment device proposed in the present invention.

[0017] Figure 2 It is a schematic diagram of the internal structure of the sewage treatment tank of the present invention.

[0018] Figure 3 It is a schematic diagram of the structure of the aeration assembly of the present invention.

[0019] Figure 4 Schematic diagram of the internal structure of the aeration assembly of the present invention.

[0020] Figure 5 It is a schematic diagram of the internal structure of the cleaning box and the cleaning assembly of the present invention.

[0021] Figure 6 For the present invention Figure 5 A is an enlarged view of the middle image.

[0022] Figure 7 It is a schematic structural diagram of the conveying roller member of the present invention.

[0023] Figure 8 It is a schematic structural diagram of the second transmission member of the present invention.

[0024] Figure numerals: 1, sewage treatment box; 101, guide roller; 102, first opening; 103, second rotating shaft; 104, motor; 105, water inlet pipe; 106, drain pipe; 2, cleaning box; 21, pressure roller; 22, second opening; 23, liquid guide seat; 24, drain pipe; 211, third rotating shaft; 3, conveying roller member; 31, assembly block; 32, first rotating shaft; 33, conveying roller; 301, oil absorption film; 4, cleaning component; 41, liquid supply box; 42, spray pipe; 421, nozzle; 43, liquid supply member; 431, water pump; 432, liquid supply pipe; 44, stirring paddle; 45, first transmission member; 451, first driving wheel; 452, The first driven wheel; 453, the first conveyor belt; 46, the sealing cover; 5, the aeration assembly; 50, the aeration cylinder; 51, the impeller member; 511, the first shaft; 512, the impeller body; 513, the first bevel gear; 52, the partition; 53, the linkage member; 531, the second bevel gear; 532, the second shaft; 54, the diverter aeration member; 541, the diverter cylinder; 542, the aeration pipe; 543, the aeration hole; 55, the air nozzle; 56, the liquid inlet pipe; 57, the stirring rod; 571, the stirring plate; 6, the second transmission member; 61, the second driving wheel; 62, the second driven wheel; 63, the second conveyor belt; 7, the air supply member; 71, the air pump; 72, the air supply pipe. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0026] like Figure 1-8 As shown, a domestic sewage treatment device proposed by the present invention comprises a sewage treatment tank 1, a cleaning tank 2, a conveying roller 3, a guide roller 101 and an oil absorption membrane 301; Two symmetrically arranged conveying rollers 3 are installed on the sewage treatment box 1, and two symmetrically arranged guide rollers 101 are rotatably installed in the sewage treatment box 1. The oil absorption film 301 is sleeved on the conveying rollers 3 and the guide rollers 101 and cooperates with them. Both sides of the sewage treatment box 1 are provided with first openings 102 for the oil absorption film 301 to enter and exit. A driving member for driving the conveying rollers 3 to drive the oil absorption film 301 to operate is installed on the sewage treatment box 1; The conveying roller 3 and the oil absorption film 301 on one side of the sewage treatment tank 1 are extended into the cleaning tank 2. A pressing roller 21 is rotatably installed in the cleaning tank 2 to press against the oil absorption film 301 on the outer periphery of the conveying roller 3. A cleaning component 4 is installed on the cleaning tank 2 to spray de-oiling liquid onto the oil absorption film 301. An aeration assembly 5 is installed at the bottom of the sewage treatment tank 1. The aeration assembly 5 includes an impeller member 51 and a diverter aeration member 54. The impeller member 51 is installed inside the aeration assembly 5. The diverter aeration member 54 is connected to the top of the aeration assembly 5. The impeller member 51 is connected to the conveying roller member 3 through a second transmission member 6. When the driving member drives the conveying roller member 3 to rotate, the impeller member 51 is driven by the second transmission member 6 to rotate and guide the water flow into the aeration assembly 5 and disperse the aeration from the center to the surrounding through the diverter aeration member 54.

[0027] like Figure 2 , Figure 3 and Figure 4 As shown, in this embodiment, the aeration assembly 5 also includes an aeration cylinder 50, a partition 52, a linkage 53, an air nozzle 55, a liquid inlet pipe 56 and a stirring rod 57. The aeration cylinder 50 is installed at the bottom of the sewage treatment tank 1 and is located below the oil absorption membrane 301. The partition 52 is installed in the aeration cylinder 50 and divides its interior into an independent assembly chamber and a flow chamber. The impeller member 51 is rotatably installed on the partition 52 and placed in the flow chamber. The linkage 53 is matched between the impeller member 51 and the second transmission member 6. The diverter aeration member 54 is installed on the top of the aeration cylinder 50 and communicates with the flow chamber. The side of the aeration cylinder 50 is connected to the liquid inlet pipe 56 connected to the flow chamber. The air nozzle 55 is installed on the partition 52. The sewage treatment tank 1 is installed with an air supply member 7 for supplying air to the air nozzle 55. The diverter aeration member 54 is rotatably installed with a stirring rod 57 connected to the impeller member 51, and the outer periphery of the stirring rod 57 is installed with a stirring plate 571.

[0028] It should be noted that: when the driving member drives the oil absorption membrane 301 to operate, the power is transmitted to the linkage member 53 through the second transmission member 6 to drive it to operate. When the linkage member 53 is in operation, it drives the impeller member 51 to rotate. During the rotation process, the impeller member 51 can guide the external sewage to enter the flow chamber in the aeration cylinder 50 through the liquid inlet pipe 56. In this process, the air supply member 7 passes the gas into the air nozzle 55, and blows the gas to the impeller member 51 through the air nozzle 55. Under the action of the impeller member 51, the air blown in by the air nozzle 55 will generate a certain driving force, which drives the sewage to promote the generation and dispersion of bubbles, and the air blown in by the air nozzle 55 will form a large number of fine bubbles under the rotation of the impeller member 51. Bubbles, driven by the impeller 51, will move upward along the aeration cylinder 50, and be dispersed from the center to the surroundings through the diverter aeration element 54 for aeration. The tiny bubbles generated during aeration will adhere to the grease particles. Since the grease itself is hydrophobic, the bubbles will increase the buoyancy of the grease particles, causing them to quickly float to the water surface, so that the grease can form an oil film on the water surface, which is convenient for the adsorption of the oil absorption film 301. In addition, the aeration is dispersed from the center to the surroundings, so that the bubbles can be evenly distributed on the entire cross-section of the sewage, which can ensure that the grease particles in the sewage can contact the bubbles and be brought to the water surface, thereby avoiding the situation where the grease in the local area cannot float.

[0029] like Figure 4 As shown, in this embodiment, the impeller member 51 includes a first shaft rod 511 and an impeller body 512, the first shaft rod 511 is rotatably mounted on the partition 52, the impeller body 512 located in the flow chamber is mounted on the first shaft rod 511, the bottom end of the first shaft rod 511 extends into the assembly chamber and is mounted with a first bevel gear 513, the first bevel gear 513 cooperates with the linkage member 53, the linkage member 53 includes a second bevel gear 531 and a second shaft rod 532, one end of the second shaft rod 532 rotates through the outer periphery of the aeration cylinder 50 and is mounted with a second bevel gear 531 located in the assembly chamber and meshing with the first bevel gear 513, and the other end of the second shaft rod 532 is connected to the second transmission member 6.

[0030] It should be noted that: when the second transmission member 6 transmits power to the second shaft 532, the second shaft 532 drives the second bevel gear 531 to drive the first bevel gear 513 meshing with it to operate, and the first shaft 511 connected to the first bevel gear 513 also operates and drives the impeller body 512 to rotate. When the impeller body 512 rotates, it can guide the external sewage. The air sprayed from the air nozzle 55 is also blown directly to the impeller body 512. Under the action of the impeller body 512, the blown air will generate a certain driving force, further driving the sewage to promote the generation and dispersion of bubbles.

[0031] like Figure 4 As shown, in this embodiment, the diverter aeration element 54 includes a diverter tube 541, which is installed on the top of the aeration tube 50 and connected to the flow chamber. The diverter tube 541 is connected to an aeration pipe 542 on all four sides. The aeration pipe 542 is provided with a plurality of aeration holes 543 arranged at intervals. The stirring rod 57 is rotatably connected to the diverter tube 541, and the bottom end of the stirring rod 57 is connected to the top end of the first shaft rod 511. The rotation path of the stirring plate 571 is located above the aeration pipe 542.

[0032] It should be noted that: when the air blown in by the air nozzle 55 is rotated by the impeller 51, a large number of tiny bubbles will be formed. Under the push of the impeller 51, these bubbles will move upward along the aeration cylinder 50, and disperse to the surrounding aeration pipes 542 along the diversion cylinder 541, and then be discharged through the aeration holes 543 opened on the aeration pipes 542 for aeration. The aeration method of dispersing from the center to the surroundings can better mix the sewage and make the grease particles fully contact with the bubbles. This uniform aeration method can improve the efficiency of grease floating up and speed up the speed of grease attaching to the water surface, thereby Improve the adsorption efficiency of the oil absorption membrane 301 and shorten the time of the entire grease cleaning. It should be emphasized here that if the aeration is uneven, aeration dead corners may be formed in some areas, resulting in the inability to effectively remove the grease in these areas. The aeration method that disperses from the center to the surroundings can effectively reduce the dead corners, ensure that the grease in the entire sewage treatment area can be cleaned, and improve the overall effect of sewage treatment. Through the above mechanism, tiny bubbles can effectively attach to the grease particles during the aeration process, and then bring the grease particles to the water surface, providing conditions for the subsequent adsorption of the oil absorption membrane 301; In order to disperse the bubbles more evenly in the sewage, the first shaft 511 can drive the stirring rod 57 connected thereto to rotate when rotating, and the stirring rod 57 then drives the stirring plate 571 to rotate above the plurality of aeration tubes 542 to stir the bubbles ejected from the aeration holes 543. The stirring structure can further break the aggregation state of the bubbles and disperse the bubbles more evenly in the sewage. At the same time, the stirring effect can increase the turbulence of the sewage, so that the grease particles and bubbles are more fully mixed, and the probability of grease adhering to the bubbles is increased. During the rising process of the bubbles, some grease may be redispersed in the sewage due to the disturbance of the water flow. The stirring structure can effectively prevent this phenomenon, ensuring that the grease can smoothly float up and adhere to the water surface, thereby facilitating the adsorption of the oil absorption film 301.

[0033] like Figure 2 and Figure 4 As shown, in this embodiment, the air supply component 7 includes an air pump 71 and an air supply pipe 72, the air nozzle 55 is located below the impeller body 512, the air pump 71 is installed on the sewage treatment tank 1, and the air outlet end of the air pump 71 is connected to the air supply pipe 72, and the air supply pipe 72 is connected to the air nozzle 55.

[0034] It should be noted that: during the aeration process, the gas is guided to the gas nozzle 55 along the gas supply pipe 72 by the air pump 71, and then discharged through the gas nozzle 55, and the gas generates thrust on the sewage to form bubbles.

[0035] like Figure 2 , Figure 5 and Figure 7As shown, in this embodiment, the conveying roller member 3 includes an assembly block 31, a first rotating shaft 32 and a conveying roller 33. Two symmetrically arranged assembly blocks 31 are installed on both sides of the sewage treatment tank 1. The adjacent sides of the two assembly blocks 31 are rotatably connected with the first rotating shaft 32. The conveying roller 33 is fixed between the two first rotating shafts 32. The oil absorption film 301 is sleeved on the two conveying rollers 33 and the two guide rollers 101 and cooperates with them. The pressure roller 21 presses against the oil absorption film 301 on the periphery of the conveying roller 33 on one side of the sewage treatment tank 1. A second opening 22 for the oil absorption film 301 to pass through is provided on the side of the cleaning box 2 close to the sewage treatment tank 1. The two ends of the guide roller 101 are installed with a second rotating shaft 103 rotatably connected to the inner wall of the sewage treatment tank 1. The driving member includes a motor 104. The motor 104 is installed on the side of an assembly block 31, and the driving end of the motor 104 is connected to the end of a first rotating shaft 32.

[0036] In order to drive the oil absorption film 301 to operate, one of the conveying rollers 33 is driven to rotate by the motor 104. Since the oil absorption film 301 is sleeved on the first rotating shaft 32 and the guide roller 101 and has a certain degree of tension, when the conveying roller 33 rotates, the oil absorption film 301 sleeved thereon can be driven to operate continuously. When the oil absorption film 301 operates continuously, the oil in the sewage can be continuously adsorbed. Compared with the traditional filter screen filtering method, this method will not have the problem of filter screen clogging, and there is no need to frequently replace the filter screen, thereby ensuring the continuity and high efficiency of cleaning the oil in the sewage. It should be emphasized here that the oil absorption membrane 301 passes around the bottom of the guide roller 101 and passes through the first openings 102 on both sides of the sewage treatment tank 1 respectively, and the passed parts are inclined from bottom to top to achieve a tightening effect, and the height of the first opening 102 is higher than the height at which the sewage enters the sewage treatment tank 1 and contacts the bottom surface of the oil absorption membrane 301.

[0037] like Figure 2 and Figure 8 As shown, in this embodiment, the second transmission member 6 includes a second driving wheel 61, a second driven wheel 62 and a second conveyor belt 63. Another first rotating shaft 32 rotates through another assembly block 31. The second driving wheel 61 is fixed to the end of the first rotating shaft 32 away from the conveying roller 33. The end of the second shaft 532 away from the second bevel gear 531 rotates through the side of the sewage treatment tank 1 and is fixed with the second driven wheel 62. The second conveyor belt 63 is matched between the second driving wheel 61 and the second driven wheel 62.

[0038] It should be noted that when the motor 104 drives the conveying roller 33 to rotate, the first rotating shaft 32 connected to the conveying roller 33 will drive the second driving wheel 61 to rotate. Since the second driving wheel 61 and the second driven wheel 62 are matched with the second conveyor belt 63, under the action of the second conveyor belt 63, power can be transmitted to the second driven wheel 62, driving the second shaft 532 connected to the second driven wheel 62 to operate, thereby transmitting power to the overall linkage member 53 to drive the impeller member 51 to rotate.

[0039] like Figure 1 , Figure 5 and Figure 6 As shown, in this embodiment, the cleaning component 4 includes a liquid supply tank 41, a spray pipe 42, a liquid supply member 43, a stirring paddle 44, a first transmission member 45 and a sealing cover 46. The liquid supply tank 41 is installed on the top of the cleaning tank 2, and the spray pipe 42 is installed in the cleaning tank 2 and is located above the pressure roller 21 and the conveying roller 33. The bottom of the spray pipe 42 is connected to a plurality of nozzles 421 arranged at intervals and arranged toward the oil absorption membrane 301. The liquid supply tank 41 is provided with a liquid supply member 43 for supplying de-oiled liquid to the spray pipe 42. A liquid inlet is provided at the top of the cleaning component 4, and a sealing cover 46 is sealed at the liquid inlet. The liquid supply member 43 includes a water pump 431 and a liquid supply pipe 432. The water pump 431 is installed at the bottom of one end of the liquid supply tank 41 and is connected to the interior thereof. The liquid outlet end of the water pump 431 is connected to the liquid supply pipe 432 connected to the spray pipe 42.

[0040] It should be noted that: when the motor 104 drives the conveying roller 33 to drive the oil absorption film 301 to operate and continuously absorb the grease in the sewage in the sewage treatment tank 1, the conveying roller 33 placed in the cleaning tank 2 can be driven to rotate. Since the pressure roller 21 presses against the oil absorption film 301 on the periphery of the conveying roller 33, when the conveying roller 33 rotates, the power can be transmitted to the pressure roller 21 to drive it to rotate. When the pressure roller 21 rotates, it can squeeze the oil absorption film 301 running on the conveying roller 33, so that the oil absorption film 301 can be squeezed. The grease adsorbed on 01 can be pressed out. In order to make the grease fall off from the oil absorption film 301 quickly, during this process, the water pump 431 is started to guide the degreasing liquid in the liquid supply box 41 along the liquid supply pipe 432 to the spray pipe 42, and then the degreasing liquid is sprayed to the oil absorption film 301 through the nozzle 421 at the bottom of the spray pipe 42. Under the action of the degreasing liquid, the grease can be quickly fallen off from the oil absorption film 301, and combined with the squeezing effect of the pressure roller 21, the degreasing effect can be further enhanced.

[0041] like Figure 6As shown, in this embodiment, a stirring paddle 44 is rotatably installed in the liquid supply box 41, and the pressure roller 21 and the stirring paddle 44 are connected to each other through a first transmission member 45. The first transmission member 45 includes a first driving wheel 451, a first driven wheel 452 and a first conveyor belt 453. The stirring paddle 44 is transversely arranged in the liquid supply box 41, and the two ends of the stirring paddle 44 are respectively rotatably connected to the two ends of the liquid supply box 41, and one end of the stirring paddle 44 rotates through one end of the liquid supply box 41. Both ends of the pressure roller 21 are installed A third rotating shaft 211 is installed, and the ends of the two third rotating shafts 211 are rotatably connected to the inner walls of both sides of the cleaning box 2 respectively. One end of a third rotating shaft 211 rotates through the side of the pressure roller 21. The first driving wheel 451 is fixed to one end of the third rotating shaft 211, and the first driven wheel 452 is fixed to one end of the stirring paddle 44. A first conveyor belt 453 is cooperated between the first driving wheel 451 and the first driven wheel 452, and the wheel diameter of the first driven wheel 452 is larger than the wheel diameter of the first driving wheel 451.

[0042] It should be noted that: in order to prevent the degreasing agent from settling in the liquid supply tank 41, when the conveying roller 33 drives the pressure roller 21 to rotate, the pressure roller 21 transmits power to the first driving wheel 451 connected thereto through the third rotating shaft 211. Since the first driving wheel 451 and the first driven wheel 452 are matched with the first conveyor belt 453, the first driven wheel 452 can be driven to rotate under the kinetic energy transmission of the first conveyor belt 453, and the stirring paddle 44 connected to the first driven wheel 452 will also rotate. When the stirring paddle 44 rotates, the degreasing agent in the liquid supply tank 41 can be stirred to prevent the degreasing agent from settling in the liquid supply tank 41. By stirring the degreasing agent, the effect of removing grease can be guaranteed.

[0043] like Figure 1 and Figure 5 As shown, in the specific embodiment, the bottom of the cleaning box 2 is connected to a drain pipe 24 , and an inclined liquid guide seat 23 is installed at the bottom of the cleaning box 2 , and the downward inclined end of the liquid guide seat 23 is arranged toward the drain pipe 24 .

[0044] It should be noted that the degreasing agent sprayed on the oil absorption film 301 can remove the grease from the oil absorption film 301 and drop it onto the liquid guide seat 23 in the vertical direction. The grease flows along the inclined end of the liquid guide seat 23 to the drain pipe 24 and then is discharged through the drain pipe 24.

[0045] like Figure 1 As shown, in the specific embodiment, the bottom of the sewage treatment tank 1 is connected to a water inlet pipe 105 and a drain pipe 106 which are in communication with the interior thereof.

[0046] When treating sewage, the sewage is mainly guided to the sewage treatment tank 1 through the water inlet pipe 105. After the grease in the sewage is treated, it can be discharged through the drain pipe 106, and then the sewage is guided to the next process for treatment.

[0047] like Figure 1 As shown, in the specific embodiment, valve bodies are installed on the drain pipe 24 , the water inlet pipe 105 and the drain pipe 106 . The valve bodies are mainly used to control the drain pipe 24 , the water inlet pipe 105 and the drain pipe 106 .

[0048] The specific working principle of the present invention is as follows: First, the sewage is introduced into the sewage treatment tank 1 through the water inlet pipe 105, so that the liquid at the top of the sewage contacts the bottom surface of the oil absorption membrane 301, and then one of the conveying rollers 33 is driven to rotate by the motor 104. Since the oil absorption membrane 301 is sleeved on the first rotating shaft 32 and the guide roller 101, it has a certain degree of tension. When the conveying roller 33 rotates, it can drive the oil absorption membrane 301 sleeved thereon to continuously operate. When the oil absorption membrane 301 continuously operates, it can continuously absorb the grease in the sewage. Compared with the traditional filter filtering method, this method will not have the problem of filter clogging, and there is no need to frequently replace the filter, which ensures the continuity and efficiency of the grease cleaning in the sewage. When the grease absorbed by the oil absorption membrane 301 runs into the pressure roller 21, due to the pressure roller 2 1 is pressed against the oil absorbing film 301 on the outer periphery of the conveying roller 33. When the conveying roller 33 rotates, the power can be transmitted to the pressing roller 21 to drive it to rotate. When the pressing roller 21 rotates, it can squeeze the oil absorbing film 301 running on the conveying roller 33, so that the grease adsorbed on the oil absorbing film 301 can be squeezed out. In order to make the grease fall off from the oil absorbing film 301 quickly, in this process, the water pump 431 is started to guide the degreasing liquid in the liquid supply box 41 along the liquid supply pipe 432 to the spray pipe 42, and then the degreasing liquid is sprayed to the oil absorbing film 301 through the nozzle 421 at the bottom of the spray pipe 42. Under the action of the degreasing liquid, the grease can be quickly dropped from the oil absorbing film 301, and combined with the squeezing effect of the pressing roller 21, the degreasing effect can be further enhanced. The pressing roller 2 During operation, the stirring paddle 44 in the liquid supply box 41 can be driven to rotate by the first transmission member 45 to stir the degreasing agent in the liquid supply box 41 to ensure that the degreasing material in the degreasing agent is evenly distributed. When the motor 104 drives the conveying roller 33 to rotate, the first rotating shaft 32 connected to the conveying roller 33 will drive the second driving wheel 61 to rotate. Since the second driving wheel 61 and the second driven wheel 62 are matched with the second conveying belt 63, under the action of the second conveying belt 63, the power can be transmitted to the second driven wheel 62, driving the second shaft 532 connected to the second driven wheel 62 to rotate. The second shaft 532 drives the second bevel gear 531 to drive the first bevel gear 513 meshing with it to rotate, and the second bevel gear 513 connected to the first bevel gear 513 is connected to the second bevel gear 513. A shaft 511 also rotates and drives the impeller body 512 to rotate. When the impeller body 512 rotates, it can guide the external sewage, so that the sewage enters the aeration cylinder 50 through the liquid inlet pipe 56, and then the gas is guided to the air nozzle 55 along the air supply pipe 72 through the air pump 71, and the gas is blown to the impeller body 512 through the air nozzle 55. The air blown in by the air nozzle 55 will generate a certain driving force under the action of the impeller body 512, driving the sewage to promote the generation and dispersion of bubbles, and the air blown in by the air nozzle 55 will form a large number of fine bubbles under the action of the rotation of the impeller body 512. These bubbles will move upward along the aeration cylinder 50 under the impeller body 512, and disperse to the surrounding aeration pipes 542 along the diversion cylinder 541.Then, the air is discharged through the aeration holes 543 provided on the aeration pipe 542 for aeration. The aeration method of dispersing from the center to the surroundings can better mix the sewage and make the grease particles fully contact with the bubbles. This uniform aeration method can improve the efficiency of grease floating up and speed up the speed of grease attaching to the water surface, thereby improving the adsorption efficiency of the oil absorption film 301 and shortening the entire grease cleaning time. In order to make the bubbles more evenly dispersed in the sewage, the first shaft 511 can drive the stirring rod 57 connected thereto to rotate when rotating, and the stirring rod 57 then drives the stirring plate 571 to rotate above the aeration pipes 542 to spray the aeration holes 543. The bubbles that come out are stirred. The stirring structure can further break the aggregation state of the bubbles, so that the bubbles are more evenly dispersed in the sewage. At the same time, the stirring effect can increase the turbulence of the sewage, so that the grease particles and bubbles are more fully mixed, and the probability of grease adhering to the bubbles is increased. During the rising process of the bubbles, some grease may be redispersed in the sewage due to the disturbance of the water flow. The stirring structure can effectively prevent this phenomenon, ensuring that the grease can float smoothly and adhere to the water surface, which is convenient for the adsorption of the oil absorption film 301. After the grease in the sewage is processed, it can be discharged through the drain pipe 106 and guided to the next process for processing.

[0049] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or the equivalent forms of such scope and boundaries.

Claims

1. A domestic sewage treatment device, characterized in that: It comprises a sewage treatment tank (1), a cleaning tank (2), a conveying roller (3), a guide roller (101) and an oil absorption membrane (301); The sewage treatment box (1) is provided with two symmetrically arranged conveying rollers (3), and two symmetrically arranged guide rollers (101) are rotatably arranged in the sewage treatment box (1). The oil absorption film (301) is sleeved on the conveying rollers (3) and the guide rollers (101) and cooperates with them. Both sides of the sewage treatment box (1) are provided with first openings (102) for the oil absorption film (301) to enter and exit. The sewage treatment box (1) is provided with a driving member for driving the conveying rollers (3) to drive the oil absorption film (301) to operate. The conveying roller (3) and the oil absorption film (301) on one side of the sewage treatment box (1) both extend into the cleaning box (2); a pressing roller (21) is rotatably mounted in the cleaning box (2) and is pressed against the oil absorption film (301) on the outer periphery of the conveying roller (3); and a cleaning component (4) is mounted on the cleaning box (2) and is configured to spray de-oiled liquid onto the oil absorption film (301); An aeration assembly (5) is installed at the bottom of the sewage treatment tank (1). The aeration assembly (5) comprises an impeller component (51) and a diverter aeration component (54). The impeller component (51) is installed inside the aeration assembly (5). The diverter aeration component (54) is connected to the top of the aeration assembly (5). The impeller component (51) is connected to the conveying roller component (3) via a second transmission component (6). When the driving component drives the conveying roller component (3) to rotate, the second transmission component (6) drives the impeller component (51) to rotate and guide water to enter the aeration assembly (5) and disperse aeration from the center to the surrounding through the diverter aeration component (54).

2. A domestic sewage treatment device according to claim 1, characterized in that: The aeration assembly (5) further comprises an aeration cylinder (50), a baffle (52), a linkage (53), an air nozzle (55), a liquid inlet pipe (56) and an agitating rod (57); the aeration cylinder (50) is installed at the bottom of the sewage treatment tank (1) and is located below the oil absorption membrane (301); the baffle (52) is installed in the aeration cylinder (50) and divides the interior of the aeration cylinder into an independent assembly chamber and a flow chamber; the impeller (51) is rotatably mounted on the baffle (52) and is placed in the flow chamber; the impeller (51) and the second transmission member (6) are connected to each other. A linkage member (53) is provided between the aeration cylinder (50) and the sewage treatment tank (1); the flow-dividing aeration member (54) is mounted on the top of the aeration cylinder (50) and is in communication with the flow-through chamber; a liquid inlet pipe (56) in communication with the flow-through chamber is connected to the side of the aeration cylinder (50); an air nozzle (55) is mounted on the partition plate (52); an air supply member (7) for supplying air to the air nozzle (55) is mounted on the sewage treatment tank (1); a stirring rod (57) connected to the impeller member (51) is rotatably mounted on the flow-dividing aeration member (54); a stirring plate (571) is mounted on the outer periphery of the stirring rod (57).

3. A domestic sewage treatment device according to claim 2, characterized in that: The impeller member (51) comprises a first shaft (511) and an impeller body (512); the first shaft (511) is rotatably mounted on the partition (52); the impeller body (512) located in the flow chamber is mounted on the first shaft (511); the bottom end of the first shaft (511) extends into the assembly chamber and is mounted with a first bevel gear (513); the first bevel gear (513) cooperates with the linkage member (53); The linkage member (53) comprises a second bevel gear (531) and a second shaft (532); one end of the second shaft (532) rotates through the outer circumference of the aeration cylinder (50) and is provided with a second bevel gear (531) located in the assembly chamber and meshing with the first bevel gear (513); the other end of the second shaft (532) is connected to the second transmission member (6).

4. A domestic sewage treatment device according to claim 3, characterized in that: The diverter aeration element (54) comprises a diverter cylinder (541), the diverter cylinder (541) being mounted on the top of the aeration cylinder (50) and communicating with the flow chamber, the diverter cylinder (541) being connected to an aeration pipe (542) on all sides, the aeration pipe (542) being provided with a plurality of aeration holes (543) arranged at intervals, the stirring rod (57) being rotatably connected to the diverter cylinder (541), the bottom end of the stirring rod (57) being connected to the top end of the first shaft rod (511), and the rotation path of the stirring plate (571) being located above the aeration pipe (542).

5. A domestic sewage treatment device according to claim 4, characterized in that: The air supply component (7) comprises an air pump (71) and an air supply pipe (72); the air nozzle (55) is located below the impeller body (512); the air pump (71) is installed on the sewage treatment tank (1); the air outlet end of the air pump (71) is connected to the air supply pipe (72), and the air supply pipe (72) is in communication with the air nozzle (55).

6. A domestic sewage treatment device according to claim 3, characterized in that: The conveying roller member (3) comprises an assembly block (31), a first rotating shaft (32) and a conveying roller (33). Two symmetrically arranged assembly blocks (31) are installed on both sides of the sewage treatment tank (1). The adjacent sides of the two assembly blocks (31) are rotatably connected to the first rotating shaft (32). The conveying roller (33) is fixed between the two first rotating shafts (32). The oil absorption film (301) is sleeved on the two conveying rollers (33) and the two guide rollers (101) and cooperates with them. The pressure roller (21) presses against the oil absorption film (301) on the periphery of the conveying roller (33) on one side of the sewage treatment tank (1). A second opening (22) for the oil absorption film (301) to pass through is provided on the side of the cleaning tank (2) close to the sewage treatment tank (1). The second rotating shaft (103) rotatably connected to the inner wall of the sewage treatment tank (1) is installed at both ends of the guide roller (101). The driving member comprises a motor (104), the motor (104) being mounted on a side surface of one of the assembly blocks (31), and the driving end of the motor (104) being connected to an end of one of the first rotating shafts (32); The second transmission member (6) comprises a second driving wheel (61), a second driven wheel (62) and a second conveyor belt (63); another of the first rotating shafts (32) rotates and passes through another of the assembly blocks (31); the second driving wheel (61) is fixed to one end of the first rotating shaft (32) away from the conveyor roller (33); one end of the second shaft (532) away from the second bevel gear (531) rotates and passes through the side of the sewage treatment tank (1) and is fixed with the second driven wheel (62); and a second conveyor belt (63) is provided between the second driving wheel (61) and the second driven wheel (62).

7. A domestic sewage treatment device according to claim 6, characterized in that: The cleaning assembly (4) comprises a liquid supply box (41), a spray pipe (42), a liquid supply member (43), a stirring paddle (44), a first transmission member (45) and a sealing cover (46); the liquid supply box (41) is mounted on the top of the cleaning box (2); the spray pipe (42) is mounted in the cleaning box (2) and is located above the pressure roller (21) and the conveying roller (33); the bottom of the spray pipe (42) is connected to a plurality of spray heads (421) arranged at intervals and facing the oil absorption membrane (301); the liquid supply box (41) is mounted with a liquid supply member (43) for supplying de-oiled liquid to the spray pipe (42); a liquid inlet is opened on the top of the cleaning assembly (4), and the liquid inlet is sealed with a sealing cover (46); A stirring paddle (44) is rotatably mounted in the liquid supply box (41), and the pressure roller (21) and the stirring paddle (44) are transmission-connected via a first transmission member (45).

8. A domestic sewage treatment device according to claim 7, characterized in that: The liquid supply component (43) comprises a water pump (431) and a liquid supply pipe (432); the water pump (431) is installed at the bottom of one end of the liquid supply box (41) and is connected to the interior thereof; the liquid outlet end of the water pump (431) is connected to the liquid supply pipe (432) which is connected to the spray pipe (42).

9. A domestic sewage treatment device according to claim 8, characterized in that: The first transmission member (45) comprises a first driving wheel (451), a first driven wheel (452) and a first conveyor belt (453); the stirring paddle (44) is disposed transversely in the liquid supply box (41); two ends of the stirring paddle (44) are respectively rotatably connected to two ends of the liquid supply box (41); one end of the stirring paddle (44) rotatably passes through one end of the liquid supply box (41); both ends of the pressure roller (21) are mounted with a third rotating shaft (211); the ends of the two third rotating shafts (211) are respectively connected to the cleaning The inner walls of both sides of the washing box (2) are rotatably connected, one end of the third rotating shaft (211) rotates through the side of the pressure roller (21), the first driving wheel (451) is fixed to one end of the third rotating shaft (211), the first driven wheel (452) is fixed to one end of the stirring paddle (44), a first conveyor belt (453) is provided between the first driving wheel (451) and the first driven wheel (452), and the wheel diameter of the first driven wheel (452) is larger than the wheel diameter of the first driving wheel (451).

10. A domestic sewage treatment device according to claim 9, characterized in that: The bottom of the cleaning box (2) is connected to a liquid drain pipe (24), and an inclined liquid guide seat (23) is installed at the bottom of the cleaning box (2), with the downwardly inclined end of the liquid guide seat (23) facing the liquid drain pipe (24); The bottom of the sewage treatment tank (1) is connected to a water inlet pipe (105) and a drainage pipe (106) which are in communication with the interior of the sewage treatment tank (1), and valve bodies are installed on the drainage pipe (24), the water inlet pipe (105) and the drainage pipe (106).

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