Cyclone desanding device for kitchen slurry
By improving the water distribution mechanism and high-pressure water gun design of the cyclone sand removal device, the problem of sand and food residue binding in kitchen slurry was solved, achieving efficient sand removal and resource utilization.
Patent Information
- Application Number
- CN202520136545.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-21
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-01-21
AI Technical Summary
Existing hydrocyclone desanding devices exhibit sand and food residue aggregation when processing kitchen waste slurry, resulting in poor desanding effect, loss of organic matter and grease, and low resource utilization.
A compact cyclone sand removal device is employed, comprising a sand removal tank, a water distribution mechanism, and a sand discharge screw conveyor. Through the design of the water distribution mechanism and the combined use of a high-pressure water gun, effective separation of sand and organic matter is achieved. The water distribution mechanism features a ring-shaped main pipe and outlet pipe design, with the outlet pipe tangential to the main pipe, forming multiple small water streams to enhance the collision separation effect. The high-pressure water gun is used to rinse away organic matter and grease from the surface of the settled sand, improving the sand removal rate.
It significantly improved the sand removal rate and resource utilization rate, reduced the aggregation of sand and food residue, reduced the loss of organic matter and oil, and improved processing efficiency.
Smart Images
Figure CN223780009U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of cyclone sand removal devices for kitchen slurry, belong to kitchen garbage processing technical field. BACKGROUND
[0002] In kitchen garbage processing technology, generally adopt "pretreatment+anaerobic digestion. The pretreatment of kitchen garbage, need to adopt solid-liquid separation technology, i.e. liquid state things such as water, grease, organic matter and solid waste residue are separated, then the separated liquid and solid are handled respectively.
[0003] Currently, after the disposal and separation of large-scale kitchen garbage, the kitchen slurry is separated by the sand removal device, and then enters the three-phase oil extractor for oil-water separation. In order to reduce the wear of heavy sand on the subsequent equipment, the sand removal device is generally located before the oil extraction. The existing sand removal device is a sedimentation tank, which relies on gravity to remove sand. In order to achieve good sand removal effect, the residence time needs to be increased. If the daily processing demand is large, the sand removal tank needs to have a large capacity, which will inevitably increase the land occupation and investment cost.
[0004] The cyclone sand removal tank is mainly used for filtering sand-containing water and can separate sand and stones from water. The working principle of the cyclone sand removal tank is based on centrifugal separation. When water flows into the device from the tangential direction, strong rotational motion is generated. Due to the difference in density between sand and water, under the joint action of centrifugal force, centripetal force, buoyancy and fluid drag force, water with low density rises and is discharged from the water outlet, while sand with high density is discharged from the bottom of the device. This cyclone sand removal tank can effectively remove impurities in water. However, after the kitchen garbage is separated and slurried, the wastewater contains a large amount of food residues with a particle size less than 10 mm. During the cyclone sand removal process, the sand and stones in the lower part of the sediment may be united with the food residues, which may lead to poor separation of sand and stones. In addition, a large amount of oil is wrapped on the surface of the sand and stone clumps, which may cause the loss of part of the organic matter and oil, and cannot fully realize resource utilization. SUMMARY
[0005] The utility model discloses a kind of cyclone sand removal devices for kitchen slurry, with compact structure, can improve the sand removal rate and resource utilization rate.
[0006] The technical scheme to achieve the above-mentioned purpose of the utility model is as follows: a cyclone sand removal device for kitchen slurry, characterized by comprising a sand removal tank, a water distribution mechanism and a sand discharge screw conveyor.
[0007] The sand removal tank comprises a circular cyclone bin, a conical cyclone bin and a sand settling bin arranged in sequence from top to bottom.
[0008] The water distribution mechanism includes a main water distribution pipe and multiple outlet pipes. The main water distribution pipe includes an annular main pipe and an inlet pipe that is tangentially connected to the annular main pipe and extends into the sand removal tank. The annular main pipe is installed inside the circular vortex chamber of the sand removal tank. The end of the annular main pipe is a sealed end. The outlet pipes are evenly distributed on the annular main pipe and communicate with the annular main pipe. The central axis of the outlet pipe is tangent to the central axis of the annular main pipe. The outlet of the tapered outlet pipe has a larger diameter than the inlet diameter. The outlet of the outlet pipe is opposite to the arc-shaped tank wall of the circular vortex chamber.
[0009] The sand removal tank is equipped with a high-pressure water gun at the top of the drain port of the conical vortex chamber, and the angle α between the central axis of the outlet of the high-pressure water gun and the central axis of the conical vortex chamber is between 15° and 25°.
[0010] The sand removal tank is equipped with a sand discharge electric gate at the bottom of the sand settling chamber and a sewage discharge electric gate at the sewage outlet. The sand discharge electric gate is connected to the sand inlet of the lower sand discharge screw conveyor, which is equipped with a filter screen.
[0011] This invention features a water distribution mechanism within a circular vortex chamber at the top of the sand removal tank. This mechanism comprises a ring-shaped main pipe and an inlet pipe, with outlet pipes evenly distributed along and connected to the ring-shaped main pipe. Because the central axes of each outlet pipe are tangent to the central axis of the ring-shaped main pipe, the wastewater entering the tank is divided into multiple small streams. During the downward movement of these streams under vortex action, sand and food residue collide and rub against the inner wall. Simultaneously, the multiple streams collide at high speed with each other, breaking up clumps of sand and food residue. Lighter organic matter and clear liquid flow out from the top overflow outlet, thus improving the separation efficiency of sand and organic matter. The outlet pipe of this invention's water distribution mechanism is conical, with an outlet diameter larger than the inlet diameter, thereby reducing the likelihood of sand and clumps clogging the outlet pipe. This invention features a drain outlet at the bottom of a conical vortex chamber, with a high-pressure water gun installed above the drain outlet. The compact design uses high-pressure water to wash away organic matter and grease adhering to the surface of the sediment, diluting and dispersing the sediment and denser organic matter at the bottom. This allows the denser organic matter to be brought to the top of the sediment and discharged through the drain outlet, significantly reducing the aggregation of sand and food residue. After washing, the sediment contains almost no organic matter, improving the sand removal rate and resource utilization. Attached Figure Description
[0012] The embodiments of this utility model will now be described in further detail with reference to the accompanying drawings.
[0013] Figure 1 This is a schematic diagram of the structure of a cyclone sand removal device for kitchen slurry according to the present invention.
[0014] Figure 2 is a structural schematic view of the water distribution mechanism.
[0015] Wherein: 1 - sand removal tank, 1-1 - circular cyclone bin, 1-2 - conical cyclone bin, 1-3 - sand bin, 1-4 - overflow, 1-5 - sewage outlet, 2 - water distribution main, 2-1 - water inlet pipe, 2-2 - annular main pipe, 3 - adjusting shaft, 4 - baffle, 5 - high-pressure water gun, 6 - sewage electric gate, 7 - sand removal electric gate, 8 - sand removal screw conveyor, 9 - water outlet pipe. Specific embodiments
[0016] See Figure 1 , the utility model discloses a kind of cyclone sand removal devices for kitchen slurry, including sand removal tank 1, water distribution mechanism and sand removal screw conveyor 8.
[0017] See Figure 1 , the utility model sand removal tank 1 includes circular cyclone bin 1-1, conical cyclone bin 1-2 and sand bin 1-3 at least sequentially from top, conical cyclone bin 1-2 sand removal tank 1 is provided with overflow 1-4 at top, the taper angle of conical cyclone bin 1-2 is 15~22 °, sand removal tank 1 is provided with sewage outlet 1-5 at conical cyclone bin 1-2 lower portion, the sand removal tank 1 of the utility model can be made of metal, and wear-resistant layer is provided on the inner side of the tank wall of sand removal tank 1, when kitchen slurry enters sand removal tank 1 and moves downward under the action of cyclone, from circular cyclone bin 1-1 to conical cyclone bin 1-2, sand and food residues collide and rub with the inner wall of sand removal tank 1, the sand particles of large density and the organic matter of slightly large density flow to the bottom sand bin 1-3, and the organic matter of lighter density overflows from overflow 1-4 at the top of sand removal tank 1 and enters subsequent processing procedure.
[0018] See Figure 1 , 2 , the utility model water distribution mechanism includes water distribution main 2 and multiple water outlet pipes 9, water distribution main 2 includes annular main pipe 2-2 and water inlet pipe 2-1, which is tangentially connected with annular main pipe 2-2 and extends out of sand removal tank 1, kitchen slurry is passed into annular main pipe 2-2 through water inlet pipe 2-1, and then added into circular cyclone bin 1-1 through multiple water outlet pipes 9. Figure 2As shown, the annular main pipe 2-2 is arranged in the circular cyclone bin 1-1 of the sand removal tank 1, the end of the annular main pipe 2-2 is a sealed end, the water outlet pipes 9 are uniformly distributed on the annular main pipe 2-2 and communicate with the annular main pipe 2-2, the central axis of the water outlet pipe 9 is tangent to the central axis of the annular main pipe 2-2, so that the plurality of water outlet pipes 9 simultaneously cut the kitchen slurry into the circular cyclone bin 1-1, the water is divided into multiple small water streams and enters the sand removal tank 1, and is rotated from the circular cyclone bin 1-1 to the conical cyclone bin 1-2, so that the sand and food residues collide and rub with the tank wall, under the high-speed collision of the multiple water streams, the sand and the organic matter including the lumps are dispersed, and the organic matter of the kitchen slurry is separated from the sand as much as possible, and the organic matter with light density is overflowed from the overflow port 1-4 at the top of the sand removal tank 1. The diameter of the water outlet of the conical water outlet pipe 9 is larger than the diameter of the water inlet, and the water outlet of the water outlet pipe 9 is opposite to the arc-shaped tank wall of the circular cyclone bin 1-1, so that the multiple water inlets enter the circular cyclone bin 1-1, and the water distribution outlet pipe can effectively reduce the blocking phenomenon of the water distribution outlet pipe and improve the reliability of the water distribution treatment.
[0019] See Figure 1 As shown, the sand removal tank 1 is provided with a high-pressure water gun 5 on the upper part of the blowdown port 1-5 of the conical cyclone bin 1-2, the included angle α between the central axis of the water outlet of the high-pressure water gun 5 and the central axis of the conical cyclone bin 1-2 is between 15-25°, preferably the included angle β between the central axis of the water outlet of the high-pressure water gun 5 and the central axis of the conical cyclone bin 1-2 is between 18-22°, for example, the included angle β between the central axis of the water outlet of the high-pressure water gun 5 and the central axis of the conical cyclone bin 1-2 is 20°, the high-pressure water gun 5 can spray high-pressure water on the sand and the organic matter with slightly larger density in the lower part, especially the high-pressure water gun 5 can shoot the water flow downward as a whole, and the centrifugal force is applied again, the organic matter and oil attached to the surface of the sand are washed, the sand in the bottom is diluted and dispersed, the organic matter with slightly larger density is floated above the sand, the organic matter at the corresponding position is discharged through the blowdown port 1-5 and treated, at this time, the sand in the bottom hardly contains the organic matter, so that the loss of the organic matter and the oil is reduced, and the problem of low sand removal efficiency and resource waste caused by the agglomeration state of the sand and the food residues after settlement in the kitchen slurry is solved.
[0020] See Figure 1As shown, the sand removal tank 1 is provided with a sand discharge electric gate 7 at the sand settling bin 1-3 and a sewage discharge electric gate 6 at the sewage discharge port 1-5, the sand discharge electric gate 7 is connected with the sand inlet of the lower sand discharge screw conveyor 8, and the sand discharge screw conveyor 8 is provided with a filter screen, so that the sewage in the lower part of the sand removal tank 1 is discharged by opening the sewage discharge electric gate 6 at a regular time, and the sand in the sand removal tank 1 is discharged by opening the sand discharge electric gate 7 at a regular time, and then enters the sand discharge screw conveyor 8, and the sand is discharged through the filter screen of the sand discharge screw conveyor, so that the sand separation is more complete.
[0021] See Figure 1 As shown, the sand removal tank 1 is provided with a sand discharge electric gate 7 at the sand settling bin 1-3 and a sewage discharge electric gate 6 at the sewage discharge port 1-5, the sand discharge electric gate 7 is connected with the sand inlet of the lower sand discharge screw conveyor 8, and the sand discharge screw conveyor 8 is provided with a filter screen, so that the sewage in the lower part of the sand removal tank 1 is discharged by opening the sewage discharge electric gate 6 at a regular time, and the sand in the sand removal tank 1 is discharged by opening the sand discharge electric gate 7 at a regular time, and then enters the sand discharge screw conveyor 8, and the sand is discharged through the filter screen of the sand discharge screw conveyor, so that the sand separation is more complete.
[0022] One end of the baffle plate 4 is fixedly connected with the adjusting shaft 3, the adjusting shaft 3 is rotatably installed on the supporting seat in the sand removal tank 1, or the adjusting shaft 3 is rotatably and sealingly installed in the sand removal tank 1, the outer side of the sand removal tank 1 is provided with a limiting plate, at least two limiting clamping grooves are formed in the limiting plate, one end of the adjusting shaft 3 penetrates out of the sand removal tank 1 and is arranged at the corresponding limiting clamping groove, and the other end of the adjusting shaft 3 is sealingly arranged in the sand removal tank 1, so that the angle of the baffle plate 4 is conveniently adjusted.
Claims
1. A cyclonic sand removal device for kitchen slurries, characterised in that: It comprises a desanding tank (1), a water distribution mechanism and a sand discharging screw conveyor (8); The desanding tank (1) comprises a circular cyclone bin (1-1), a conical cyclone bin (1-2) and a sand settling bin (1-3) arranged in sequence from top to bottom, and is provided with an overflow port (1-4) at the top and a blowdown port (1-5) at the lower part of the conical cyclone bin (1-2). The water distribution mechanism comprises a water distribution main pipe (2) and a plurality of water outlet pipes (9), the water distribution main pipe (2) comprises a ring-shaped main pipe (2-2) and a water inlet pipe (2-1) tangentially connected with the ring-shaped main pipe (2-2) and extending out of the desanding tank (1), the ring-shaped main pipe (2-2) is arranged in the circular cyclone bin (1-1) of the desanding tank (1), the end of the ring-shaped main pipe (2-2) is a sealed end, the water outlet pipes (9) are evenly arranged on the ring-shaped main pipe (2-2) and communicate with the ring-shaped main pipe (2-2), the central axis of the water outlet pipes (9) is tangent to the central axis of the ring-shaped main pipe (2-2), the hole diameter of the water outlet of the conical water outlet pipe (9) is larger than that of the water inlet, and the water outlet of the water outlet pipe (9) is opposite to the arc-shaped tank wall of the circular cyclone bin (1-1). The high-pressure water gun (5) is installed at the upper part of the blowdown port (1-5) of the conical cyclone bin (1-2) of the desanding tank (1), and the included angle α between the central axis of the water outlet of the high-pressure water gun (5) and the central axis of the conical cyclone bin (1-2) is between 15 and 25 degrees. The desanding tank (1) is provided with a sand discharging electric gate (7) at the bottom of the sand settling bin (1-3) and a blowdown electric gate (6) at the blowdown port (1-5), the sand discharging electric gate (7) is connected with the sand inlet of the lower sand discharging screw conveyor (8), and the sand discharging screw conveyor (8) is provided with a filter screen.
2. A cyclonic sand removal device for kitchen pulp according to claim 1, characterized in that: The desanding tank (1) is further provided with a baffle (4) at the lower part in the conical cyclone bin (1-2), the baffle (4) is located on the upper side of the high-pressure water gun (5), and the included angle β between the baffle (4) and the tank wall of the conical cyclone bin (1-2) is between 20 and 30 degrees.
3. A cyclonic sand removal device for kitchen pulp according to claim 2, characterized in that: One end of the baffle (4) is fixedly connected with an adjusting shaft (3), the adjusting shaft (3) is rotatably installed on a supporting seat in the desanding tank (1) or is sealingly installed in the desanding tank (1) and can rotate, the outer side of the desanding tank (1) is provided with a limiting plate, at least two limiting clamping grooves are formed in the limiting plate, one end of the adjusting shaft (3) penetrates out of the desanding tank (1) and is arranged at the corresponding limiting clamping groove, and one end of the adjusting shaft (3) is sealingly arranged on the desanding tank (1).
4. A cyclonic sand removal device for kitchen pulp according to claim 1, characterized in that: The included angle β between the central axis of the water outlet of the high-pressure water gun (5) and the central axis of the conical cyclone bin (1-2) is between 18 and 22 degrees.