Buried type urban domestic sewage treatment equipment

Abstract

The utility model discloses a kind of buried town domestic sewage treatment equipment, including processing box, the inside of processing box is separated out collection chamber I and collection chamber II by baffle I and baffle II, filter screen is movably installed between baffle I and processing box side wall, filter screen small mouth end is communicated with inlet pipe by swivel joint, other end is communicated with collection chamber I, filter screen outside is engaged connection by synchronous belt and the synchronous pulley meshing of motor I output end is equipped, lifting frame is equipped in processing box, and electric telescopic link I one end is fixedly connected in the periphery of lifting frame. The utility model is by the filter screen of rotation cooperation multistage baffle, realize solid-liquid separation, utilize the self-cleaning purpose of solid waste self-weight in the process of rotation, and cooperate oil absorption mechanism, can clean oil adsorption on sewage surface layer, avoid grease condensation in processing box influence subsequent purification step, greatly improve the purification efficiency of domestic sewage.

Description

Technical Field

[0001] This utility model belongs to the field of domestic sewage treatment technology, and specifically relates to an underground urban domestic sewage treatment equipment. Background Technology

[0002] In people's daily lives, a large amount of domestic sewage is generated, which contains a lot of solid waste and oil. To prevent the occupation of a large amount of land resources, existing sewage treatment equipment is developing towards underground systems. However, existing underground sewage treatment equipment has the following problems in use: 1) Because the treatment equipment is buried underground, maintenance is inconvenient. The single-function filter device is difficult to use for a long time, which leads to filter hole blockage and affects use. Maintenance is also time-consuming and labor-intensive. 2) Oil removal in existing treatment equipment generally uses filter cotton or does not have oil filtration equipment at all. Filter cotton needs to be replaced repeatedly, the degree of automation is low, and the maintenance cost is high. Without oil filtration equipment, grease will be adsorbed on the side wall, which will also block the pipes and even affect the activity of microorganisms, thus affecting the sewage purification efficiency.

[0003] A search revealed that prior art CN219333438U discloses a buried domestic sewage treatment device, including a treatment tank and a tank cover. The tank cover is detachably assembled to the open end of the treatment tank. A first filter screen cylinder is vertically and detachably assembled to the center of the bottom surface of the tank cover. An inlet pipe is connected and fixed to the tank cover, with the bottom end of the inlet pipe inserted downward into the first filter screen cylinder. The device also includes a purification component, which comprises a support plate, a second filter screen cylinder, a cylinder body, and a perforated cylinder. The support plate is horizontally fixed to the bottom of the treatment tank, and the second filter screen cylinder is vertically and detachably assembled to the center of the top surface of the support plate. The first filter screen cylinder is vertically inserted into the second filter screen cylinder, and the cylinder body is vertically sleeved on the outside of the second filter screen cylinder. The cylinder body is vertically and detachably assembled to the center of the top surface of the support plate, and the perforated cylinder is vertically inserted into the outside of the cylinder body. Furthermore, the bottom end of the perforated tube is fixed to the top surface of the support plate. The above technical solution simplifies maintenance steps, reduces costs and workload, and makes it easier to disassemble and replace the purification components by integrating purification components. However, the above technical solution still has the following problems in use: 1) Although the purification rate is improved by setting multiple filtration and adsorption methods, the surface of the first filter screen does not have a self-cleaning mechanism, which makes the filter holes on its surface easily clogged by solid waste, resulting in poor water flow and affecting purification efficiency; 2) Domestic sewage has complex components and fluctuates in flow rate, with a large peak flow rate. At the peak, solid waste, grease and other components in the sewage will cause a certain filter material in the purification component to reach saturation in a short time, resulting in a deterioration of its overall purification effect.

[0004] For example, the existing technology CN221771687U discloses a buried domestic sewage treatment equipment, which includes a treatment tank with two layers of filter screens fixedly installed inside, a compression component installed at the top, a lifting valve installed on the left side, and a sand and gravel filter box installed at one end of the bottom outlet pipe. A filter hole cleaning component is installed between the two layers of filter screens. In the above solution, the threaded rod drives the rotating column to rotate synchronously, which in turn drives the rotating plate to rotate between the two filter screens. This causes the bristles to clean the filter holes of the filter screen. The bristles inserted into the filter holes unclog the filter holes and also drive the moving column to slide along the uneven surface of the filter screen, which causes the filter screen to vibrate. This further shakes and shakes the impurities in the filter holes to fall off, further improving the cleaning effect and avoiding the impact of sewage treatment due to filter hole blockage. However, the above technical solution requires the machine to be stopped during use to perform compression and collection operations, which affects the sewage treatment efficiency. At the same time, if the compression operation on the filter screen encounters hard solids, it is very easy to cause the filter screen to break. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a buried urban domestic sewage treatment equipment. Through a rotating filter screen and multi-stage baffles, solid-liquid separation is achieved. At the same time, the solid waste achieves self-cleaning by utilizing its own weight during rotation. In addition, with the help of an oil suction mechanism, the surface grease of the sewage can be adsorbed cleanly, preventing the grease from condensing in the treatment tank and affecting subsequent purification steps, thus greatly improving the purification efficiency of domestic sewage.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A buried urban domestic sewage treatment device includes a treatment tank, an inlet pipe, a filter screen, a motor I, a collection chamber I, a lifting frame, an oil suction mechanism, a collection chamber II, a water pump, a partition I, an electric telescopic rod, and a partition II. The treatment tank is internally divided into collection chamber I and collection chamber II by partitions I and II. A filter screen is movably installed between partition I and the side wall of the treatment tank. The small end of the filter screen is connected to the inlet pipe via a rotary joint, and the other end is connected to collection chamber I. A synchronous pulley on the outside of the filter screen is engaged with a synchronous pulley at the output end of motor I via a synchronous belt. The interior is equipped with a lifting frame, with one end of an electric telescopic rod I fixedly connected around the lifting frame. The other end of the electric telescopic rod I is fixedly installed on the treatment tank. An oil suction mechanism is installed on the lifting frame. One side of the bottom of the treatment tank is fixedly connected to a water pump through a pipe, and the other end of the water pump is connected to a biological treatment tank through a pipe. Domestic sewage first enters the filter screen through the inlet pipe for solid-liquid separation. The filtered solid waste enters the collection chamber I, and then the filtered liquid falls below the treatment tank for oil removal. After preliminary treatment, the sewage is pumped into the biological treatment tank for final purification.

[0008] The top opening of the processing box is equipped with a cover plate to facilitate the cleaning and maintenance of collection chamber I and collection chamber II by staff.

[0009] The filter screen is equipped with baffles I, II, III, and IV. Baffles I, II, III, and IV are installed in a staggered manner to block the water flow while allowing solid waste to move smoothly during rotation and eventually enter the collection chamber I, thus achieving solid-liquid separation.

[0010] The oil suction mechanism includes a fixed plate, a fixed rod, a spring, a movable plate, an oil-absorbing felt, a ball screw, a telescopic protective cover, a motor II, and rollers. Fixed rods are fixedly installed on both sides of the fixed plate, and rollers are movably installed at both ends of the fixed rods. The rollers are in contact with the lifting frame. An oil-absorbing felt is sleeved on the fixed rod, with one end of the oil-absorbing felt installed on the fixed plate and the other end installed on the movable plate. The movable plate is movably installed on the fixed rod. A spring is provided between the movable plate and the fixed plate, and the spring is wound around the fixed rod. The fixed plate is engaged with the ball screw. One end of the ball screw is fixedly connected to the output end of the motor II, and the other end is movably installed on the lifting frame. A telescopic protective cover is wound around the outside of the ball screw.

[0011] A support frame is provided above the collection chamber II. The two ends of the support frame are fixedly installed on the partition I and the inner side wall of the processing box. Two sets of electric telescopic rods II with opposite directions are fixedly installed at the bottom of the support frame. The telescopic ends of the electric telescopic rods II are fixedly connected to the extrusion plates. The extrusion plates are movably installed on the guide rods. The two ends of the guide rods are installed on the inner side wall of the processing box.

[0012] The advantages of this utility model compared with the prior art are as follows:

[0013] 1) The cone-shaped filter screen is staggered with baffles of different sizes, which can block the water flow and prevent water from splashing through the filter screen. At the same time, the staggered baffles are all provided with open sides, so that solid waste will gradually fall and move towards the larger opening end as the filter screen rotates, and fall into collection chamber I. This achieves self-cleaning solid-liquid separation, avoids clogging of the filter holes, and does not require shutdown for cleaning, which greatly improves the wastewater treatment efficiency.

[0014] 2) When the oil suction mechanism is working, firstly, the electric telescopic rod I is controlled to drive the lifting frame to fall, so that the oil-absorbing felt contacts the liquid surface. The motor II drives the ball screw to rotate, thereby driving the fixed plate to reciprocate through meshing transmission. During the movement, the rollers installed on the fixed rods at both ends of the fixed plate are responsible for limiting and guiding, so that the oil stains on the surface of the liquid are absorbed during the reciprocating motion of the oil-absorbing felt. The wavy oil-absorbing felt can increase the contact area with the oil stains and improve the oil suction efficiency.

[0015] 3) When the oil-absorbing felt reaches saturation, the electric telescopic rod I first drives the lifting frame to rise, so that the lowest point of the oil-absorbing mechanism is higher than the partition plate II. Then, the motor II drives the ball screw to rotate, thereby engaging with the fixed plate and moving the oil-absorbing felt below the extrusion plate. Subsequently, the electric telescopic rod I drives the lifting frame to continue rising, so that the movable plate on one side of the oil-absorbing felt is engaged with the inside of the extrusion plate. Then, the electric telescopic rod II drives the extrusion plate to retract along the guide rod, squeezing and discharging the oil from the oil-absorbing felt. The oil falls into the collection chamber II below. After the extrusion plate resets, the oil-absorbing felt resets under the action of the spring. Through multi-stage coordination, the automatic adsorption, squeezing and removal of oil are achieved, reducing maintenance costs, improving equipment stability, ensuring the smooth progress of subsequent purification operations, and improving the sewage purification rate. Attached Figure Description

[0016] Appendix Figure 1 This is a schematic diagram of the structure of an underground urban domestic sewage treatment equipment according to this utility model;

[0017] Appendix Figure 2 This is a schematic diagram of the internal structure of a buried urban domestic sewage treatment equipment according to this utility model;

[0018] Appendix Figure 3 This is a schematic diagram of the filter screen structure;

[0019] Appendix Figure 4 This is a schematic diagram of the internal structure of the filter screen;

[0020] Appendix Figure 5 This is a schematic diagram showing the installation effect of the oil suction mechanism;

[0021] Appendix Figure 6 This is a schematic diagram showing the installation effect of the support frame;

[0022] Appendix Figure 7 This is a schematic diagram of the internal structure of the oil-absorbing felt;

[0023] In the diagram: 10. Processing tank; 11. Inlet pipe; 12. Filter screen; 13. Motor I; 14. Collection chamber I; 15. Lifting frame; 16. Oil suction mechanism; 17. Collection chamber II; 18. Support frame; 19. Water pump; 101. Cover plate; 121. Baffle I; 122. Baffle II; 123. Baffle III; 124. Baffle IV; 141. Partition I; 151. Electric telescopic rod I; 161. Fixed plate; 162. Fixed rod; 163. Spring; 164. Movable plate; 165. Oil-absorbing felt; 166. Ball screw; 167. Telescopic protective cover; 168. Motor II; 169. Roller; 171. Partition II; 181. Electric telescopic rod II; 182. Squeezing plate; 183. Guide rod. Detailed Implementation

[0024] To facilitate understanding by those skilled in the art, the following is a detailed explanation in conjunction with the appendix. Figure 1-7The technical solution of this utility model will be further described in detail below.

[0025] A buried urban domestic sewage treatment device includes a treatment tank 10, an inlet pipe 11, a filter screen 12, a motor I 13, a collection chamber I 14, a lifting frame 15, an oil suction mechanism 16, a collection chamber II 17, a water pump 19, a partition I 141, an electric telescopic rod I 151, and a partition II 171. The treatment tank 10 is internally divided into collection chamber I 14 and collection chamber II 17 by partitions I 141 and II 171. A filter screen 12 is movably installed between partition I 141 and the side wall of the treatment tank 10. The small end of the filter screen 12 is connected to the inlet pipe 11 via a rotary joint, and the other end is connected to the collection chamber I 14. A synchronous pulley on the outside of the filter screen 12 is connected to a synchronous belt at the output end of the motor I 13. The synchronous belt pulley is engaged and connected. The treatment tank 10 is equipped with a lifting frame 15. One end of the electric telescopic rod I 151 is fixedly connected to the four sides of the lifting frame 15. The other end of the electric telescopic rod I 151 is fixedly installed on the treatment tank 10. An oil suction mechanism 16 is installed on the lifting frame 15. One side of the bottom of the treatment tank 10 is fixedly connected to the water pump 19 through a pipe. The other end of the water pump 19 is connected to the biological treatment tank through a pipe. Domestic sewage first enters the filter screen 12 through the inlet pipe 11 for solid-liquid separation. The filtered solid waste enters the collection chamber I. Then the filtered liquid falls into the bottom of the treatment tank 10 for oil removal. After preliminary treatment, the sewage is pumped into the biological treatment tank through the water pump 19 for final purification treatment.

[0026] The top opening of the processing box 10 is provided with a cover plate 101, which facilitates the cleaning and maintenance of the collection chamber I 14 and collection chamber II 17 by the staff.

[0027] The filter screen 12 is equipped with baffles I 121, II 122, III 123, and IV 124 inside. The baffles I 121, II 122, III 123, and IV 124 are installed in a staggered manner to block the water flow while allowing solid waste to be displaced smoothly during rotation and finally enter the collection chamber I 14 to achieve solid-liquid separation.

[0028] The oil suction mechanism 16 includes a fixed plate 161, a fixed rod 162, a spring 163, a movable plate 164, an oil-absorbing felt 165, a ball screw 166, a telescopic protective cover 167, a motor 168, and rollers 169. Fixed rods 162 are fixedly installed on both sides of the fixed plate 161, and rollers 169 are movably installed at both ends of the fixed rods 162. The rollers 169 are in contact with the lifting frame 15. An oil-absorbing felt 165 is sleeved on the fixed rod 162, with one end of the felt 165 installed on the fixed plate 161 and the other end installed on the movable plate 164. The movable plate 164 is movably installed on the fixed rod 162. A spring 163 is provided between the movable plate 164 and the fixed plate 161, and the spring 163 is wound around the fixed rod 162. The upper part of the fixed plate 161 is adjacent to the ball screw 165. The ball screw 166 is installed in a 66-meshing configuration. One end of the ball screw 166 is fixedly connected to the output end of the motor II 168, and the other end is movably mounted on the lifting frame 15. A telescopic protective cover 167 is wrapped around the outside of the ball screw 166. When the oil suction mechanism 16 performs oil suction, it first controls the electric telescopic rod I 151 to drive the lifting frame 15 to fall, so that the oil-absorbing felt 165 contacts the liquid surface. The motor II 168 drives the ball screw 166 to rotate, thereby driving the fixed plate 161 to reciprocate through meshing transmission. During the movement, the rollers 169 installed on the fixed rods 162 at both ends of the fixed plate 161 are responsible for limiting and guiding, so that the oil-absorbing felt 165 adsorbs the oil on the surface of the liquid during the reciprocating movement. The wavy oil-absorbing felt 165 can increase the contact area with the oil and improve the oil suction efficiency.

[0029] A support frame 18 is provided above the collection chamber II 17. Both ends of the support frame 18 are fixedly installed on the partition I 141 and the inner wall of the processing box 10. Two sets of electric telescopic rods II 181 in opposite directions are fixedly installed at the bottom of the support frame 18. A pressing plate 182 is fixedly connected to the telescopic end of the electric telescopic rods II 181. The pressing plate 182 is movably installed on a guide rod 183, and both ends of the guide rod 183 are installed on the inner wall of the processing box 10. After the oil suction mechanism 16 has been working for a period of time, the electric telescopic rod I 151 first drives the lifting frame 15 to rise, bringing the oil suction mechanism 16 to its lowest point. After the oil absorber is above the partition plate II 171, the motor II 168 drives the ball screw 166 to rotate, thereby engaging with the fixed plate 161 to move the oil absorbent felt 165 below the extrusion plate 182. Then, the electric telescopic rod I 151 drives the lifting frame 15 to continue to rise, so that the movable plate on one side of the oil absorbent felt 165 is inserted into the inside of the extrusion plate 182. Then, the electric telescopic rod II 181 drives the extrusion plate 182 to retract along the guide rod 183, squeezing the oil absorbent felt 165 to discharge oil. The oil falls into the collection chamber II 17 below. Then, the oil suction mechanism 16 resets and continues to perform oil suction.

[0030] An underground urban domestic sewage treatment equipment operates as follows: After the treatment tank 10 is buried underground, the cover plate 101 and the inlet pipe 11 are exposed. Domestic sewage first enters the filter screen 12 through the inlet pipe 11 for solid-liquid separation, and then falls below the treatment tank 10 where the oil suction mechanism 16 performs oil-water separation. The treated sewage is then pumped into the biological treatment tank by the water pump 19 for final purification. The staff can periodically open the cover plate 101 to remove the solid waste and oil collected inside, which reduces maintenance steps, lowers maintenance costs, and improves sewage treatment efficiency.

[0031] In the description of this invention, the connection methods are divided into fixed connection and movable connection. Fixed connection methods include, but are not limited to, welding and bolting; movable connection methods include, but are not limited to, sliding connection, rotating connection and threaded connection. The connection method to achieve the desired effect should be selected according to the application of the solution.

[0032] In summary, the electronic or electrical components, including but not limited to motors, electric telescopic poles, and water pumps, are existing components that are custom-made or purchased and powered by an external power source. The electrical connections between these components are conventional circuit or electrical connections in the prior art and are not within the scope of protection of this invention.

[0033] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A buried urban domestic sewage treatment equipment, comprising a treatment tank, an inlet pipe, a filter screen, a motor I, a collection chamber I, a lifting frame, an oil suction mechanism, a collection chamber II, a water pump, a partition I, an electric telescopic rod, and a partition II, characterized in that... The treatment tank is divided into collection chamber I and collection chamber II by partition I and partition II. A filter screen is movably installed between partition I and the side wall of the treatment tank. The small end of the filter screen is connected to the water inlet pipe through a rotary joint, and the other end is connected to collection chamber I. The synchronous pulley on the outside of the filter screen is connected to the synchronous pulley on the output end of motor I through a synchronous belt. The treatment tank is equipped with a lifting frame. One end of the electric telescopic rod I is fixedly connected to the lifting frame, and the other end of the electric telescopic rod I is fixedly installed on the treatment tank. An oil suction mechanism is installed on the lifting frame. One side of the bottom of the treatment tank is fixedly connected to a water pump through a pipe, and the other end of the water pump is connected to the biological treatment tank through a pipe. Domestic sewage first enters the filter screen through the water inlet pipe for solid-liquid separation. The filtered solid waste enters collection chamber I. Then the filtered liquid falls into the bottom of the treatment tank for oil removal. The sewage after preliminary treatment is pumped into the biological treatment tank for final purification treatment. The oil suction mechanism includes a fixed plate, a fixed rod, a spring, a movable plate, an oil-absorbing felt, a ball screw, a telescopic protective cover, a motor II, and rollers. Fixed rods are fixedly installed on both sides of the fixed plate, and rollers are movably installed at both ends of the fixed rods. The rollers are in contact with the lifting frame. An oil-absorbing felt is sleeved on the fixed rod, with one end of the oil-absorbing felt installed on the fixed plate and the other end installed on the movable plate. The movable plate is movably installed on the fixed rod. A spring is provided between the movable plate and the fixed plate, and the spring is wound around the fixed rod. The fixed plate is engaged with the ball screw. One end of the ball screw is fixedly connected to the output end of the motor II, and the other end is movably installed on the lifting frame. A telescopic protective cover is wound around the outside of the ball screw.

2. The underground urban domestic sewage treatment equipment according to claim 1, characterized in that... A support frame is provided above the collection chamber II. The two ends of the support frame are fixedly installed on the partition I and the inner side wall of the processing box. Two sets of electric telescopic rods II with opposite directions are fixedly installed at the bottom of the support frame. The telescopic ends of the electric telescopic rods II are fixedly connected to the extrusion plates. The extrusion plates are movably installed on the guide rods. The two ends of the guide rods are installed on the inner side wall of the processing box.

3. The underground urban domestic sewage treatment equipment according to claim 1, characterized in that... The filter screen is equipped with baffles I, II, III, and IV, which are installed in a staggered manner.

4. The underground urban domestic sewage treatment equipment according to claim 1, characterized in that... The top opening of the processing box is equipped with a cover plate.

Images