CN-224212555-U - Sand washing device applied to pipe sludge treatment system

CN224212555UCN 224212555 UCN224212555 UCN 224212555UCN-224212555-U

Abstract

The utility model relates to a sand washing device applied to a pipe sludge treatment system. The device comprises a vortex tube cavity, a Coanda feeding horn tube, a stirrer motor, a stirrer, an organic matter discharge electromagnetic valve, a sand discharge screw and a driving motor thereof, wherein the vortex tube cavity is used for receiving flushing water discharged by a front-end washing drum and impurities smaller than 10mm, the Coanda feeding horn tube is used for changing the water flow direction and promoting fine sand to settle by utilizing the Coanda effect, the stirrer motor and the stirrer realize mixed liquid density layering, the organic matter discharge electromagnetic valve is used for controlling organic matter discharge, the sand discharge screw and the driving motor thereof are used for discharging cleaned fine sand, an emptying tube is used for emptying materials in the device, a flushing water device is used for forming a fluidized sand bed to further clean sand, and a liquid level sensor is used for monitoring the liquid level and realizing automatic water supplementing or water stopping. The device can efficiently separate sand and stone impurities, improves separation efficiency, realizes high-quality sand recovery, reduces treatment cost, and has stable operation, strong adaptability and durable equipment.

Inventors

JIANG TAO
HONG TAO
WANG JINCHAO

Assignees

阳昕环保科技（上海）有限公司

Dates

Publication Date: 20260508
Application Date: 20250711

Claims (7)

1. A sand washing device for a canal sludge treatment system, comprising: The vortex tube cavity is used for receiving flushing water discharged by the front-end washing drum and impurities smaller than 10 mm; the Coanda feeding horn tube utilizes the Coanda effect to change the water flow direction of the water inlet mixture, so that the water flow direction is uniformly distributed in the internal box body of the device, and fine sand is promoted to be settled at the bottom end of the device; The stirrer motor drives the stirrer to stir the upper mixed liquid in a rotating way, so that the sand, the organic matters and the mixed liquid can be better subjected to density layering; an organic matter discharge solenoid valve for controlling discharge of organic matter; The sand discharging screw rod and the driving motor thereof, when the sand in the device reaches the set quantity, the sand discharging screw rod starts to rotate under the action of the driving motor, and the cleaned fine sand is discharged out of the device; an emptying pipe for emptying the material in the device when needed; the flushing water device is arranged at the bottom of the device and is used for introducing an upper flushing water flow to form a fluidized sand bed so as to further clean sand; The liquid level sensor is used for monitoring the liquid level in the device and feeding back signals to the control system so as to realize the automatic water supplementing or water stopping function.
2. The sand washing device for a canal sludge treatment system as claimed in claim 1, wherein: The inner wall of the vortex tube cavity is provided with a flow guiding structure so as to guide water flow to form spiral flow and enhance the sedimentation effect of sand; And a filter screen is arranged at the inlet of the Coanda feeding horn pipe and used for intercepting large particle impurities and preventing the pipeline from being blocked.
3. The sand washing device for a canal sludge treatment system as claimed in claim 1, wherein: The blades of the stirrer are designed in a spiral or zigzag special shape so as to improve stirring efficiency and layering effect; the pitch and the diameter of the sand discharging screw rod are optimally designed to meet the discharge requirements of sand with different particle sizes, and smooth sand discharging is ensured.
4. The sand washing device for a canal sludge treatment system as claimed in claim 1, wherein: The organic matter discharge electromagnetic valve is connected with a control system and is used for automatically controlling the discharge frequency and the discharge amount according to the content of organic matters in the device; The device is also provided with an intelligent monitoring system, can monitor the running state of equipment in real time, and transmits data to a control center through a remote communication module so as to realize remote monitoring and fault early warning functions.
5. The sand washing device for a canal sludge treatment system as claimed in claim 1, wherein: The device is integrally designed in a modularized way, so that the device is convenient to install, disassemble and maintain; The outer surface of the device is provided with a heat insulation layer and an anti-corrosion coating.
6. The sand washing device for a canal sludge treatment system as claimed in claim 1, wherein: The flushing water device comprises a plurality of spray heads which are uniformly distributed at the bottom of the device; the device is also provided with a flushing water recycling system, and the flushed waste water is used for flushing again after being filtered and purified.
7. A sand washing apparatus for use in a canal sludge treatment system as claimed in any one of claims 1 to 6, wherein: The bottom of the device is provided with a supporting structure; The device is also provided with a safety protection device.

Description

Sand washing device applied to pipe sludge treatment system Technical Field The utility model relates to the technical field of pipe sludge treatment, in particular to a sand washing device applied to a pipe sludge treatment system. Background With the development of cities, the treatment of pipe sludge is an important issue in environmental engineering. The pipe sludge mainly originates from maintenance dredging operation of urban drainage pipelines, and contains a large amount of inorganic matters such as sand and stone, organic impurities brought by domestic sewage and industrial wastewater and possibly harmful substances such as heavy metals. According to related data, the pipeline sludge produced by a large city every year can reach thousands of tons, and the yield of the pipeline sludge is increased year by year along with the expansion of the city scale and the continuous perfection of a drainage pipeline system. Most of the existing canal sludge treatment modes are simple landfill or outward transportation. Simple landfill has a plurality of defects although the operation is simple and convenient and the cost is low. On the one hand, the sludge transportation cost is high, the sludge transportation vehicle needs to be frequently called because of the large water content and huge volume of the sludge, and the transportation distance is often longer, so that the transportation cost occupies a larger proportion in the treatment cost. On the other hand, leakage easily occurs in the transportation process, malodor is emitted, and adverse effects are caused on the environment along the line and the life of residents. In addition, site selection of landfill sites is more and more difficult, land resources are occupied greatly, harmful substances in sludge possibly pollute soil and water body through rain wash or groundwater infiltration, and long-term harm is caused to ecological environment. Even in some sludge treatment systems, there is room for improvement in the performance and efficiency of this critical equipment of the sand washing apparatus. Part of the existing sand washing devices are not ideal in separation precision, organic impurities on the surface of sand grains cannot be effectively removed, the quality of separated sand is low, the standard of direct recycling is difficult to achieve, and therefore the advantages of resource recycling cannot be fully exerted. Meanwhile, some devices are difficult to adapt to sludge treatment requirements of different particle sizes and different components, have poor flexibility and limited treatment capacity, and cannot meet the requirements of large-scale pipe sludge treatment. In view of the problems, the development of the sand washing device with better performance and higher efficiency has important significance for a pipe canal sludge treatment system, can improve the sludge treatment efficiency, reduce the treatment cost, better realize the recycling of resources and reduce the environmental burden. Disclosure of utility model The utility model aims to provide a sand washing device applied to a pipe canal sludge treatment system, so as to improve the separation effect and efficiency of sand and stone impurities in the pipe canal sludge treatment process and lay a foundation for subsequent sludge reduction, stabilization, harmlessness and resource utilization. In order to achieve the above object, the present utility model is achieved by: a sand washing device for a canal sludge treatment system, comprising: The vortex tube cavity is used for receiving flushing water discharged by the front-end washing drum and impurities smaller than 10 mm; the Coanda feeding horn tube utilizes the Coanda effect to change the water flow direction of the water inlet mixture, so that the water flow direction is uniformly distributed in the internal box body of the device, and fine sand is promoted to be settled at the bottom end of the device; The stirrer motor drives the stirrer to stir the upper mixed liquid in a rotating way, so that the sand, the organic matters and the mixed liquid can be better subjected to density layering; an organic matter discharge solenoid valve for controlling discharge of organic matter; The sand discharging screw rod and the driving motor thereof, when the sand in the device reaches the set quantity, the sand discharging screw rod starts to rotate under the action of the driving motor, and the cleaned fine sand is discharged out of the device; an emptying pipe for emptying the material in the device when needed; the flushing water device is arranged at the bottom of the device and is used for introducing an upper flushing water flow to form a fluidized sand bed so as to further clean sand; The liquid level sensor is used for monitoring the liquid level in the device and feeding back signals to the control system so as to realize the automatic water supplementing or water stopping function. The sand washing device applied to the canal s