Urban domestic excrement dewatering and purifying device

Abstract

The utility model discloses a kind of urban domestic excrement dewatering water purification treatment devices, it is related to sewage treatment technical field, and it includes: spiral extrusion dewaterer, the top of the spiral extrusion dewaterer is equipped with feed inlet, the bottom of the spiral extrusion dewaterer is fixedly connected with pretreatment bin, the bottom of the pretreatment bin is equipped with material collecting channel, the bottom of the pretreatment bin is equipped with sludge pump, the input end of the sludge pump is connected with the material collecting channel, the output end of the sludge pump is equipped with first pipeline, the side of the pretreatment bin is equipped with electric lifting door plate, the side of the electric lifting door plate is equipped with material collecting tank, the discharge port of the material collecting tank is equipped with third pipeline. The utility model directly connects pretreatment mechanism below spiral extrusion dewaterer by setting pretreatment mechanism, directly processes the sewage after excrement dewatering, speeds up the efficiency of subsequent water purification mechanism to process sewage, to improve the overall processing efficiency of equipment.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically a device for dehydrating and purifying urban domestic sewage. Background Technology

[0002] Feces, commonly known as "poop," "feces," "shit," or "pilferage," is the waste product of the large intestine of humans or animals. The act of expelling feces is technically called defecation, which means eliminating food residue. Feces are three-quarters water and the remaining quarter solids. The solids mostly consist of proteins, inorganic substances, fats, undigested dietary fiber, dehydrated digestive fluid residues, and cells and dead bacteria shed from the intestines. In urban life, feces are collected centrally and then dehydrated at wastewater treatment plants before being treated as sewage.

[0003] The existing water purification system operates as follows: after the feces are dehydrated, the wastewater is transported to a large sedimentation tank, where floating impurities are removed by scraping. Then, the relatively clean water is introduced into the water purification device for disinfection and other treatment processes. However, this model has obvious drawbacks: the large sedimentation tank needs a lot of time to accumulate a sufficient amount of fecal wastewater before it can function. During this period, the water purification device is in a long-term shutdown state, which leads to a significant reduction in the overall efficiency of the water purification system. To address this issue, we provide an urban domestic fecal dehydration and water purification device to solve the above problems. Summary of the Invention

[0004] The purpose of this utility model is to provide an urban domestic sewage dewatering and purification device to solve the problem that existing water purification devices require a large sedimentation tank to accumulate a sufficient amount of sewage before they can operate, which causes the water purification device to stop during the period of operation and thus reduces the working efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a municipal sewage dewatering and purification device, comprising: a screw extrusion dewatering machine, wherein a feed inlet is installed at the top of the screw extrusion dewatering machine, a pretreatment chamber is fixedly connected to the bottom of the screw extrusion dewatering machine, a collection channel is opened at the bottom of the pretreatment chamber, a sludge pump is installed at the bottom of the pretreatment chamber, the input end of the sludge pump is connected to the collection channel, a first pipe is installed at the output end of the sludge pump, an electric lifting door is installed on one side of the pretreatment chamber, a collection trough is installed on one side of the electric lifting door, a third pipe is installed at the discharge port of the collection trough, and a pretreatment mechanism and an auxiliary unit are respectively arranged inside the pretreatment chamber. The pretreatment mechanism includes: a push plate, which is arranged inside the screw extrusion dewatering machine, and two connecting blocks are arranged at the bottom of the feed inlet, the connecting blocks being slidably connected to the inner side of the pretreatment chamber via trapezoidal slide rails; a first auxiliary plate, a second auxiliary plate being arranged at the bottom of the first auxiliary plate, and connecting plates being arranged at both ends of the second auxiliary plate.

[0006] As a further embodiment of this utility model: the pretreatment mechanism includes two trapezoidal slide rails fixedly connected to both ends of the inner side of the pretreatment chamber, a trapezoidal slider is slidably connected to the inner side of the trapezoidal slide rail, a connecting block is fixedly connected to one side of the trapezoidal slider, and a push plate is fixedly connected to the top of the connecting block.

[0007] As a further embodiment of this utility model: the pretreatment mechanism further includes two protective frames fixedly connected to the inner side of the pretreatment chamber. A drive motor is fixedly connected to the inner side of the protective frame, and a partition is fixedly connected to the inner side of the protective frame. The actuator end of the drive motor passes through to the outside of the partition and is fixedly connected to a receiving roller. A connecting rope is installed on the outer wall of the receiving roller. A pulling block is fixedly connected to the bottom of the push plate. One end of each of the two connecting ropes passes through to the outer wall of the protective frame, and one end of the connecting rope is installed on both sides of the pulling block. A discharge assembly for discharging sediment is provided below the push plate.

[0008] As a further embodiment of this utility model: the discharge assembly includes a first auxiliary plate fixedly connected to the inner side of the pretreatment chamber. Both the first and second auxiliary plates have multiple slots inside. The pretreatment chamber has a moving slot matching the second auxiliary plate inside. The second auxiliary plate is slidably connected to the pretreatment chamber via the moving slot. Two connecting plates are provided at both ends of the pretreatment chamber. A limiting slot matching the connecting plate is provided inside the pretreatment chamber. The connecting plate is slidably connected to the pretreatment chamber via the limiting slot, and the connecting plate is fixedly connected to both ends of the second auxiliary plate. A rectangular rod is fixedly connected to one side of the connecting plate. A push rod for moving the rectangular rod is fixedly connected to the bottom of the connecting plate. A baffle is fixedly connected to one end of the connecting plate. A spring-loaded groove matching the connecting plate is provided inside the pretreatment chamber. An auxiliary spring is installed between the connecting plate and the spring-loaded groove.

[0009] As a further embodiment of this utility model: the auxiliary unit includes a water pumping channel disposed inside the pretreatment chamber, and two floats are fixedly connected to the top of the water pumping channel, and the two floats are symmetrically arranged about the center of the water pumping channel.

[0010] As a further embodiment of this utility model: two trapezoidal slides are fixedly connected to the inner side of the pretreatment chamber, and an auxiliary groove matching the trapezoidal slide is provided on one side of the water pumping channel. The water pumping channel is slidably connected to the outer wall of the trapezoidal slide through the auxiliary groove.

[0011] As a further embodiment of this utility model: the auxiliary unit also includes a water pump fixedly connected to the outer wall of the pretreatment chamber, the water pump has a water inlet hose installed at the water inlet end, one end of the water inlet hose passes through the interior of the pretreatment chamber and connects to the water outlet of the pumping channel, and the water pump has a second pipe installed at the water outlet end.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. By setting up a pretreatment mechanism, which is directly connected to the bottom of the screw extrusion dewatering machine, the wastewater after the feces dewatering is directly treated, which speeds up the efficiency of the subsequent water purification mechanism in treating wastewater, thereby improving the overall processing efficiency of the equipment. In addition, with the cooperation of the second auxiliary plate and the first auxiliary plate, it not only prevents the secondary pollution of water bodies by sludge, but also improves the sludge disposal efficiency through centralized collection and automated treatment, thereby speeding up the subsequent water purification treatment. There is no need to treat the sludge again, thereby improving the efficiency of the water purification mechanism in treating wastewater.

[0014] 2. By setting up an auxiliary unit, when the extracted wastewater flows into the pretreatment chamber and the water level rises to the designated position, the water pump is started to draw the relatively clean wastewater out of the pretreatment chamber through the water inlet hose, and then transport it to the water purification device through the second pipeline. Since the inlet of the pumping channel avoids the area with dense floating matter, the content of suspended solids such as fecal residue, fiber and oil pollutants in the pumped wastewater is low. It can be directly transported to the water purification device such as membrane filtration and biological treatment unit through the second pipeline, reducing pretreatment steps such as additional bar filtration and oil separation treatment, and improving the overall efficiency of wastewater treatment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the bottom structure of the pretreatment chamber of this utility model;

[0017] Figure 3 This is a side sectional view of the pretreatment chamber of this utility model;

[0018] Figure 4 This is an exploded view of the first auxiliary plate of this utility model;

[0019] Figure 5 This is a schematic diagram of the internal structure of the pretreatment chamber of this utility model.

[0020] In the diagram: 1. Screw extrusion dewatering machine; 2. Feed inlet; 3. Pretreatment bin; 4. Sludge pump; 5. First pipe; 6. Water pump; 7. Water hose; 8. Second pipe; 9. Connecting plate; 10. Electric lifting door panel; 11. Collection trough; 12. Third pipe; 13. First auxiliary plate; 14. Auxiliary spring; 15. Protective frame; 16. Pulling block; 17. Connecting rope; 18. Pumping channel; 19. Baffle; 20. Float; 21. Push plate; 22. Connecting block; 23. Push rod; 24. Second auxiliary plate; 25. Trapezoidal slide; 26. Slot; 27. Collection channel; 28. Trapezoidal slider; 29. ​​Drive motor; 30. Collection roller; 31. Rectangular rod; 32. Trapezoidal slide rail; 33. Partition. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will be described below based on its overall structure.

[0023] Please see Figures 1-5This embodiment provides a device for dewatering and purifying urban domestic sewage, including: a screw extruder 1, a feed inlet 2 installed at the top of the screw extruder 1, a pretreatment chamber 3 fixedly connected to the bottom of the screw extruder 1, a collection channel 27 opened at the bottom of the pretreatment chamber 3, a sludge pump 4 installed at the bottom of the pretreatment chamber 3, the input end of the sludge pump 4 connected to the collection channel 27, a first pipe 5 installed at the output end of the sludge pump 4, an electric lifting door 10 installed on one side of the pretreatment chamber 3, a collection trough 11 installed on one side of the electric lifting door 10, a third pipe 12 installed at the discharge port of the collection trough 11, and a pretreatment mechanism and an auxiliary unit respectively arranged inside the pretreatment chamber 3. The pretreatment mechanism includes: a pusher plate 21, installed inside the screw extrusion dewatering machine 1; two connecting blocks 22 at the bottom of the feed inlet 2, the connecting blocks 22 being slidably connected to the inner side of the pretreatment chamber 3 via trapezoidal slide rails 32; a first auxiliary plate 13, with a second auxiliary plate 24 at its bottom and connecting plates 9 at both ends of the second auxiliary plate 24; the pretreatment mechanism includes two trapezoidal slide rails 32 fixedly connected to both ends of the inner side of the pretreatment chamber 3; a trapezoidal slider 28 slidably connected to the inner side of the trapezoidal slide rails 32; a connecting block 22 fixedly connected to one side of the trapezoidal slider 28; and a pusher plate 21 fixedly connected to the top of the connecting block 22; the pretreatment mechanism also includes two protective frames 15 fixedly connected to the inner side of the pretreatment chamber 3 for protection. A drive motor 29 is fixedly connected to the inner side of the protective frame 15, and a partition 33 is fixedly connected to the inner side of the protective frame 15. The actuator end of the drive motor 29 extends through to the outside of the partition 33 and is fixedly connected to a receiving roller 30. A connecting rope 17 is installed on the outer wall of the receiving roller 30. A pulling block 16 is fixedly connected to the bottom of the push plate 21. One end of each of the two connecting ropes 17 extends through to the outer wall of the protective frame 15, and one end of the connecting rope 17 is installed on both sides of the pulling block 16. A discharge assembly for discharging sediment is provided below the push plate 21. The discharge assembly includes a first auxiliary plate 13 fixedly connected to the inner side of the pretreatment chamber 3. Multiple slots 26 are opened inside the first auxiliary plate 13 and the second auxiliary plate 24. A movable groove matching the second auxiliary plate 24 is provided. The second auxiliary plate 24 is slidably connected to the pretreatment chamber 3 through the movable groove. Two connecting plates 9 are provided at both ends of the pretreatment chamber 3. A limiting groove matching the connecting plate 9 is provided inside the pretreatment chamber 3. The connecting plate 9 is slidably connected to the pretreatment chamber 3 through the limiting groove. The connecting plate 9 is fixedly connected to both ends of the second auxiliary plate 24. A rectangular rod 31 is fixedly connected to one side of the connecting plate 9. A push rod 23 for pushing the rectangular rod 31 to move is fixedly connected to the bottom of the connecting block 22. A baffle 19 is fixedly connected to one end of the connecting plate 9. A spring groove matching the connecting plate 9 is provided inside the pretreatment chamber 3. An auxiliary spring 14 is installed between the connecting plate 9 and the spring groove.

[0024] The screw extrusion dewatering machine 1 is composed of a screw conveyor shaft, a screen cylinder, and an extrusion cone section. Since the driving mechanism of the screw extrusion dewatering machine 1 is existing technology, it is not described in detail in this solution.

[0025] The electric lifting door panel 10 is composed of multiple transmission structures such as a first servo motor, guide rail, and door panel. The electric lifting door panel 10 is connected to the pre-processing chamber 3 by a sealed structure. Since how the electric lifting door panel 10 is driven is existing technology, it is not described in detail in this solution.

[0026] When the water level inside the pretreatment chamber 3 is lower than the top of the push plate 21, the electric lifting door 10 is opened. Simultaneously, the drive motor 29 on the right side of the pretreatment chamber 3 rotates forward, driving the right-side collecting roller 30 to rotate and wind the connecting rope 17 around its outer wall. The drive motor 29 on the left side rotates in reverse, releasing the connecting rope 17 from the outer wall of the left-side collecting roller 30. At this point, the connecting rope 17 drives the pulling block 16 to move to the right, which in turn drives the push plate 21 to move to the right on the trapezoidal slide rail 32, pushing the floating debris directly out of the pretreatment chamber 3. Floating matter enters the third pipe 12 from inside the collection trough 11, and is then transported to the floating matter collection bin by the third pipe 12 for centralized processing. The floating matter is transported to the collection bin through the collection trough 11 and the third pipe 12 for centralized storage, which facilitates subsequent treatment by incineration, landfill or recycling, reducing the cost and environmental pollution risk of decentralized treatment. The structure is directly connected to the bottom of the screw extrusion dewatering machine 1, directly treating the sewage after the feces are dewatered, accelerating the efficiency of the subsequent water purification mechanism in treating sewage, thereby improving the overall processing efficiency of the equipment.

[0027] The connecting plate 9 is connected to the pretreatment chamber 3 through a sealing structure;

[0028] When the push plate 21 moves to the right, it simultaneously drives the push rod 23 to move. When the push rod 23 contacts the rectangular rod 31, it pushes the rectangular rod 31 to move, and through the rectangular rod 31, it drives the connecting plate 9 to move to the right. When the push rod 23 stops, the grooves 26 of the first auxiliary plate 13 and the second auxiliary plate 24 are staggered, separating the sludge and other impurities at the bottom of the pretreatment chamber 3 from the water above the second auxiliary plate 24, preventing the newly entering water from dispersing the sludge and other impurities at the bottom. The bottom of the pretreatment chamber 3 is provided with a slope, and the sludge and other impurities at the bottom will be concentrated inside the collection channel 27. At the same time, the sludge pump 4 is started to extract the impurities and water concentrated inside the collection channel 27 and transport them to the sludge treatment system through the first pipe 5 for treatment. Through the cooperation of the above parts, it not only prevents the secondary pollution of the water body by the sludge, but also improves the sludge disposal efficiency through centralized collection and automated treatment, thereby accelerating the subsequent water purification treatment. There is no need to treat the sludge, thereby improving the efficiency of the water purification mechanism in treating sewage.

[0029] After the floating debris and the sludge at the bottom are cleaned up, the right drive motor 29 reverses and the left drive motor 29 rotates forward, restoring the push plate 21 to its original position. When the push rod 23 separates from the rectangular rod 31, the connecting plate 9 is driven to return to its original position under the action of the auxiliary spring 14.

[0030] Please see Figures 1-3 The auxiliary unit includes a water pumping channel 18 located inside the pretreatment chamber 3. Two floats 20 are fixedly connected to the top of the water pumping channel 18, and the two floats 20 are symmetrically arranged about the center of the water pumping channel 18. Two trapezoidal slides 25 are fixedly connected to the inside of the pretreatment chamber 3. An auxiliary groove matching the trapezoidal slides 25 is opened on one side of the water pumping channel 18. The water pumping channel 18 is slidably connected to the outer wall of the trapezoidal slides 25 through the auxiliary groove. The auxiliary unit also includes a water pump 6 fixedly connected to the outer wall of the pretreatment chamber 3. A water inlet hose 7 is installed at the water inlet end of the water pump 6. One end of the water inlet hose 7 passes through the interior of the pretreatment chamber 3 and is connected to the outlet of the water pumping channel 18. A second pipe 8 is installed at the water outlet end of the water pump 6.

[0031] When fecal matter needs to be treated, it is first conveyed from the feed inlet 2 to the screw extruder 1 via a fecal conveying device. The screw extruder 1 then dehydrates the fecal matter, and the dehydrated wastewater flows directly into the pretreatment chamber 3. After a short period of storage, the water level gradually rises. As the water level rises, the float 20 floats on the surface and rises with the water level. At this time, the float 20 drives the pumping channel 18 to rise, and the pumping channel 18 remains below the floating object, so that the inlet of the pumping channel 18 is in the wastewater. In the relatively clean section of the water, when the water level rises to the designated position, the water pump 6 is activated to draw the relatively clean sewage out of the pretreatment chamber 3 through the water hose 7, and then transport it to the water purification device through the second pipe 8. Since the inlet of the pumping channel 18 avoids the area with dense floating objects, the content of suspended solids such as fecal residue, fiber and oil pollutants in the pumped sewage is low. It can be directly transported to the water purification device such as membrane filtration, biological treatment unit, etc. through the second pipe 8, reducing pretreatment steps such as additional bar filtration and oil separation treatment, and improving the overall efficiency of sewage treatment.

[0032] Furthermore, when the water pump 6 is in use for a period of time, it will increase the pumping speed so that the push plate 21 can handle the floating objects, and then resume the normal pumping speed, thereby improving the overall applicability of the equipment.

[0033] The wastewater from the excrement is continuously fed into the pretreatment chamber 3, while the water pump 6 continuously pumps the wastewater into the water purification device, thereby improving the overall processing efficiency of the equipment.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for dewatering and purifying urban domestic sewage, characterized in that, include: A screw extrusion dewatering machine (1) is provided with a feed inlet (2) at the top and a pretreatment chamber (3) fixedly connected to the bottom. A collection channel (27) is provided at the bottom of the pretreatment chamber (3). A sludge pump (4) is installed at the bottom of the pretreatment chamber (3). The input end of the sludge pump (4) is connected to the collection channel (27). A first pipe (5) is installed at the output end of the sludge pump (4). An electric lifting door (10) is installed on one side of the pretreatment chamber (3). A collection trough (11) is installed on one side of the electric lifting door (10). A third pipe (12) is installed at the outlet of the collection trough (11). A pretreatment mechanism and an auxiliary unit are respectively provided inside the pretreatment chamber (3). The pretreatment mechanism includes: Push plate (21) is set inside the screw extrusion dewatering machine (1). Two connecting blocks (22) are set at the bottom of the feed inlet (2). The connecting blocks (22) are slidably connected to the inside of the pretreatment chamber (3) through trapezoidal slide rail (32). A first auxiliary plate (13) is provided on the top of the first auxiliary plate (13) and a second auxiliary plate (24) is provided on both ends of the second auxiliary plate (24).

2. The urban domestic sewage dewatering and purification device according to claim 1, characterized in that, The pretreatment mechanism includes two trapezoidal slide rails (32) fixedly connected to both ends of the inner side of the pretreatment chamber (3). A trapezoidal slider (28) is slidably connected to the inner side of the trapezoidal slide rail (32). A connecting block (22) is fixedly connected to one side of the trapezoidal slider (28). A push plate (21) is fixedly connected to the top of the connecting block (22).

3. The urban domestic sewage dewatering and purification device according to claim 2, characterized in that, The pretreatment mechanism also includes two protective frames (15) fixedly connected to the inside of the pretreatment chamber (3). A drive motor (29) is fixedly connected to the inside of the protective frame (15), and a partition (33) is fixedly connected to the inside of the protective frame (15). The execution end of the drive motor (29) extends through to the outside of the partition (33) and is fixedly connected to a receiving roller (30). A connecting rope (17) is installed on the outer wall of the receiving roller (30). A pulling block (16) is fixedly connected to the bottom of the push plate (21). One end of each of the two connecting ropes (17) extends through to the outer wall of the protective frame (15), and one end of each connecting rope (17) is installed on both sides of the pulling block (16). A discharge assembly for discharging sediment is provided below the push plate (21).

4. The urban domestic sewage dewatering and purification device according to claim 3, characterized in that, The discharge assembly includes a first auxiliary plate (13) fixedly connected to the inside of the pretreatment chamber (3). Both the first auxiliary plate (13) and the second auxiliary plate (24) have multiple slots (26) inside. The pretreatment chamber (3) has a moving slot matching the second auxiliary plate (24) inside. The second auxiliary plate (24) is slidably connected to the pretreatment chamber (3) through the moving slot. Two connecting plates (9) are provided at both ends of the pretreatment chamber (3). The pretreatment chamber (3) has a limiting slot matching the connecting plate (9) inside. The connecting plate (9) is slidably connected to the pretreatment chamber (3) through the limiting groove, and the connecting plate (9) is fixedly connected to both ends of the second auxiliary plate (24). A rectangular rod (31) is fixedly connected to one side of the connecting plate (9). A push rod (23) for pushing the rectangular rod (31) to move is fixedly connected to the bottom of the connecting block (22). A baffle (19) is fixedly connected to one end of the connecting plate (9). A spring groove matching the connecting plate (9) is opened on the inner side of the pretreatment chamber (3). An auxiliary spring (14) is installed between the connecting plate (9) and the spring groove.

5. The urban domestic sewage dewatering and purification device according to claim 4, characterized in that, The auxiliary unit includes a water pumping channel (18) located inside the pretreatment chamber (3). Two floats (20) are fixedly connected to the top of the water pumping channel (18), and the two floats (20) are arranged symmetrically about the center of the water pumping channel (18).

6. The urban domestic sewage dewatering and purification device according to claim 5, characterized in that, The pretreatment chamber (3) has two trapezoidal slides (25) fixedly connected to its inner side. The pumping channel (18) has an auxiliary groove on one side that matches the trapezoidal slides (25). The pumping channel (18) is slidably connected to the outer wall of the trapezoidal slides (25) through the auxiliary groove.

7. The urban domestic sewage dewatering and purification device according to claim 6, characterized in that, The auxiliary unit also includes a water pump (6) fixedly connected to the outer wall of the pretreatment chamber (3). A water inlet hose (7) is installed on the water inlet end of the water pump (6). One end of the water inlet hose (7) passes through the interior of the pretreatment chamber (3) and is connected to the outlet of the pumping channel (18). A second pipe (8) is installed on the water outlet end of the water pump (6).

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