Dewatering device for accelerating the solidification speed of sludge by electro-osmosis and heating and pressurization

Abstract

The utility model relates to the technical field of foundation treatment related equipment discloses a precipitation device of electroosmosis method and heating pressurization method accelerate silt solidification speed, including precipitation pipe, vacuum pump, anode stick, high pressure air pump and the heating device of being located precipitation pipe outside, the precipitation pipe is cathodic zinc plating precipitation pipe, and the heating device is connected with cathodic zinc plating precipitation pipe, and the heating device includes stainless steel coil pipe, and the air inlet end of stainless steel coil pipe is connected high pressure air pump, and the air outlet end is connected cathodic zinc plating precipitation pipe, and the stainless steel coil pipe is wrapped with electric heating wire. High pressure gas is driven into cathodic zinc plating precipitation pipe, forms the water permeation passage, evaporates the water in silt soil and dredges the " dead pipe", and the water in silt enters into the water permeation passage, and the cathodic zinc plating precipitation pipe is connected with vacuum pump, and water is absorbed in the passage, and high temperature and high pressure gas is passed into cathodic zinc plating precipitation pipe, and the water in silt is heated to high temperature, and the water in silt evaporates into gas when meeting high temperature, reduces the water content in silt, and improves silt solidification speed.

Description

Technical Field

[0001] This utility model relates to the technical field of foundation treatment equipment, specifically a dewatering device that uses electroosmosis and heating and pressurization to accelerate the solidification of silt. Background Technology

[0002] Commonly used foundation treatment methods include vibro-compaction, grouting, preloading, and crushed stone piles. However, for underlying silty soils, due to their low strength, high water content, low permeability, and fine particle size, traditional foundation treatment methods suffer from drawbacks such as slow dewatering speed and high cost. Some researchers have conducted research and exploration on the applicability of electroosmotic dewatering for underlying silty soils. Since electroosmotic dewatering uses a steel pipe with filter holes and an outer nylon filter screen as the suction point, and electroosmotic dewatering is mainly applied to silty soils, due to the small particle diameter of silty soil, after about 6 hours of operation, the suction point becomes clogged with silt and cannot pump water. Upon checking the well, the pipe is found to be full of water, but the water cannot drain out. The outer nylon filter screen is blocked by silt, preventing the water from draining quickly and affecting the quality and speed of electroosmotic dewatering.

[0003] Document CN 215290068 U discloses a large-area soft soil foundation electroosmotic separation wellpoint dewatering system, including an electroosmotic grid and a wellpoint grid. The electroosmotic grid includes an array of electroosmotic electrodes connected to the positive and negative terminals of an electroosmometer via wires. The positive and negative terminals of the electroosmotic electrodes are connected in a symmetrical array. The wellpoint grid includes an array of wellpoints. The electroosmotic grid and the wellpoint grid are staggered. This device, using only electroosmosis, has relatively low dewatering efficiency.

[0004] Therefore, a new technical solution is needed to solve the above-mentioned technical problems. Summary of the Invention

[0005] To address the aforementioned issues, this utility model discloses a dewatering device that uses electroosmosis and heating / pressurization to accelerate the solidification of silt. By treating the silt with high temperature and pressure, seepage channels are formed to accelerate permeability. While these channels facilitate water infiltration, water evaporation is also promoted, increasing the drainage speed of water within the silt, reducing the risk of filter screen clogging by silt, achieving rapid dewatering, and accelerating the solidification of silt.

[0006] The technical solution of this utility model is as follows: a dewatering device for accelerating the solidification of silt by electroosmosis and heating and pressurization, including a cathode galvanized dewatering pipe, a vacuum pump, an anode rod, a high-pressure air pump, and a heating device located outside the dewatering pipe. The heating device is connected to the cathode galvanized dewatering pipe. The heating device includes a stainless steel coil. The air inlet end of the stainless steel coil is connected to the high-pressure air pump, and the air outlet end is connected to the cathode galvanized dewatering pipe. An electric heating wire is wrapped on the stainless steel coil.

[0007] By adopting the above technical solution, the high-pressure gas inside the stainless steel coil is heated by an electric heating wire, and then the high-pressure high-temperature gas is injected into the cathode galvanized dewatering pipe by a high-pressure air pump. The high-temperature and high-pressure gas is then pumped into the silt through the cathode galvanized dewatering pipe, forming a breathable channel for the silt in the foundation pit and evaporating the water in the silt at high temperature and pressure, thereby accelerating the flexibility of the silt and thus speeding up the dehydration and solidification of the silt.

[0008] Preferably, the stainless steel coil is filled with high-pressure gas supplied by a high-pressure gas pump, and an electric heating wire on the stainless steel coil heats the high-pressure gas inside the stainless steel coil.

[0009] Preferably, the electric heating wire is connected to an external power source to heat the stainless steel coil. The temperature inside the stainless steel coil is 400-500℃, and the outlet temperature is not lower than 200℃. The electric heating wire is wrapped around the surface of the stainless steel coil in sequence.

[0010] By adopting the above technical solution, while the high-pressure air pump is filling the stainless steel coil with air, the electric heating wire heats it, so that the stainless steel coil is filled with high-temperature and high-pressure gas, which facilitates the filling of the cathode galvanized downpipe with air.

[0011] Preferably, the cathode galvanized rainwater pipe is a hollow pipe with a through hole 1-1.5 meters below the ground. The cathode galvanized rainwater pipe is covered with a stainless steel mesh, with the top of the stainless steel mesh 1-1.5 meters below the ground.

[0012] By adopting the above technical solution, the stainless steel mesh installed on the outside of the cathode galvanized rainwater pipe plays a role in preventing silt and sand from entering the cathode pipe filter and in protecting the water pump.

[0013] Preferably, the stainless steel mesh is 70-90 mesh, and the stainless steel mesh and the cathode galvanized rainwater pipe are fastened together with iron wire.

[0014] By adopting the above technical solution, the stainless steel mesh is always located on the outer surface of the cathodic galvanized downpipe, serving as a filter for impurities and a water conveyance channel.

[0015] Preferably, the end of the cathode galvanized downpipe is placed underground, and the beginning is connected to a vacuum pump or stainless steel coil. The cathode galvanized downpipe is connected to the negative terminal of an external power source, and the cathode galvanized downpipe is powered on when it is absorbing water and blowing air.

[0016] By adopting the above technical solution, when water needs to be drawn in, the cathode galvanized downpipe is connected to a vacuum pump to draw water from the channels in the silt. When air needs to be pumped in, the cathode galvanized downpipe is connected to the air outlet of a stainless steel coil to pump air into the silt.

[0017] Preferably, an anode rod is provided within a radius of 2-3 meters around the cathode galvanized downpipe. The anode rod is connected to the positive terminal of an external power source, and switches are provided at the locations where the anode rod and the cathode galvanized downpipe are connected to the power source.

[0018] By adopting the above technical solution, an anode rod is set around the cathode galvanized downpipe, and an electroosmosis method is used to generate current between the cathode tube and the anode rod.

[0019] The advantages of this utility model are as follows: 1. This utility model injects high-pressure gas into the cathode galvanized downpipe to form a permeable channel in the silt, which evaporates the water in the silt and clears the "dead pipe". When the water in the silt enters the permeable channel, the cathode galvanized downpipe is connected to a vacuum pump to absorb water in the channel, thereby improving the drainage speed and efficiency of the silt.

[0020] 2. This utility model heats the water in the silt by introducing high-temperature gas into the cathode galvanized downpipe, causing the water in the silt to evaporate into gas upon contact with the high temperature, thereby increasing the flow rate of water in the silt, reducing the water content in the silt, and improving the solidification speed of the silt.

[0021] 3. This utility model uses high temperature and high pressure to treat silt, forming channels to accelerate water infiltration while also evaporating water, thereby increasing the drainage speed of water in the silt and accelerating the solidification speed of the silt.

[0022] 4. This utility model, on the one hand, transforms the soft plastic state of sludge into a fluid plastic state, breaking the original water absorption and retention state of the sludge, accelerating the dynamic flow, aerodynamics, and hydrodynamics of water and air in the sludge, and increasing the speed at which water permeates from the sludge to the outside, thus facilitating the improvement of the pump's efficiency in drawing water and air; on the other hand, the electroosmosis method, based on heating, utilizes potential difference to enhance the directional migration speed of water and air, improving the permeability of the sludge, thereby draining and consolidating it. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the rainwater pipe of this utility model; Figure 3 This is a schematic diagram of the structure of the rainwater pipe covered with stainless steel mesh according to this utility model; Figure 4 This is a schematic diagram of the structure of the stainless steel coil of this utility model.

[0024] The components include: 1. Cathode galvanized downpipe, 101. Through hole, 2. Vacuum pump, 3. High-pressure air pump, 4. Stainless steel coil, 5. Electric heating wire, 6. Stainless steel mesh, 7. Anode rod, 8. Electroosmosis instrument, and 9. Wire. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0026] like Figure 1-4 As shown, the dewatering device for accelerating sludge solidification using electroosmosis and heating / pressurization includes a cathode galvanized dewatering pipe 1, a vacuum pump 2, an anode rod 7, a high-pressure air pump 3, and a heating device located outside the dewatering pipe 1. The heating device is connected to the cathode galvanized dewatering pipe 1. The heating device includes a stainless steel coil 4. The air inlet of the stainless steel coil 4 is connected to the high-pressure air pump 3, and the air outlet is connected to the cathode galvanized dewatering pipe 1. An electric heating wire 5 is wrapped around the stainless steel coil 4. The electric heating wire 5 heats the high-pressure gas inside the stainless steel coil 4, and then the high-pressure, high-temperature gas is injected into the cathode galvanized dewatering pipe 1. The high-temperature, high-pressure gas is then injected into the sludge through the cathode galvanized dewatering pipe 1, forming a breathable channel in the sludge and evaporating the water in the sludge at high temperature, thereby accelerating the sludge's dehydration and solidification.

[0027] The stainless steel coil 4 is filled with high-pressure gas supplied by the high-pressure air pump 3. The electric heating wire 5 on the stainless steel coil 4 heats the high-pressure gas inside the stainless steel coil 4. The electric heating wire 5 is connected to an external power source to heat the stainless steel coil 4. The temperature inside the stainless steel coil 4 is 400-500℃, and the outlet temperature is not lower than 200℃. The electric heating wire 4 is wrapped around the surface of the stainless steel coil 4 in sequence. When the high-pressure air pump 3 fills the stainless steel coil 4 with gas, the electric heating wire 5 heats it, so that the stainless steel coil 4 is filled with high-temperature and high-pressure gas, which facilitates the filling of the cathode galvanized downpipe 1 with gas.

[0028] The cathode galvanized downpipe 1 is a hollow pipe. A through hole 101 is provided on the cathode galvanized downpipe 1 at a height of 1-1.5 meters below the ground. The cathode galvanized downpipe 1 is surrounded by a stainless steel mesh 6. The top of the stainless steel mesh 6 is 1-1.5 meters below the ground. The stainless steel mesh 6 on the outside of the cathode galvanized downpipe 1 plays a filtering role, which can prevent the silt and sand in the silt from clogging the pipe, thereby affecting the silt precipitation, and also plays a role in protecting the water pump.

[0029] The stainless steel mesh is 70-90 mesh. The stainless steel mesh 6 and the cathode galvanized downpipe 1 are fastened together with iron wire. The stainless steel mesh 6 is always located on the outer surface of the cathode galvanized downpipe 1 and plays the role of filtering impurities.

[0030] The end of the cathode galvanized downpipe 1 is placed underground, and the first end is connected to the vacuum pump 2 or the stainless steel coil 4. The cathode galvanized downpipe 1 is connected to the cathode of an external power source. The cathode galvanized downpipe 1 is powered on when it is sucking water and blowing air. When water needs to be sucked, the cathode galvanized downpipe 1 is connected to the vacuum pump 2 to suck water into the channel in the silt. When air needs to be blown, the cathode galvanized downpipe 1 is connected to the air outlet of the stainless steel coil 4 to blow air into the silt.

[0031] An anode rod 7 is installed within a radius of 2-3 meters around the cathode galvanized downpipe 1. The anode rod 7 is connected to the positive terminal of the external power supply, that is, to the positive terminal of the electroosmosis device 8. Switches are installed at the positions where the anode rod 7 and the cathode galvanized downpipe 1 are connected to the power supply. The anode rod 7 is installed around the cathode galvanized downpipe 1. The electroosmosis method is used to form a current between the cathode tube and the anode rod 7. The cathode galvanized downpipe 1 and the anode rod 7 are connected to the electroosmosis device 8 through the wire 9.

[0032] High-pressure air pump 3 is connected to the air-filling end of stainless steel coil 4. At the same time, electric heating wire 5 heats stainless steel coil 4. Then, the high-temperature and high-pressure gas in stainless steel coil 4 is injected into rainwater pipe 1. At this time, a ventilation channel is formed in the silt. Some of the water is evaporated by the high temperature of the gas, and some of the water in the silt seeps into the ventilation channel. Then, the end of rainwater pipe 1 connected to stainless steel coil 4 is switched to vacuum pump 2 to draw water from the ventilation channel, thereby achieving the effect of rainwater removal.

[0033] High-temperature, high-pressure gas is used to transform soft, plastic sludge into a fluid, plastic state, breaking the original water-absorbing and retaining state of the sludge. This accelerates the dynamic flow, aerodynamics, and hydrodynamics of water and air within the sludge, increasing the rate at which water permeates from the sludge and improving the efficiency of pumps drawing water and air. Electroosmosis, based on heating, utilizes potential difference to enhance the directional migration rate of water and air, further improving the permeability of the sludge. This process is then used for drainage and consolidation.

[0034] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. A dewatering device for accelerating sludge solidification using electroosmosis and heating / pressurization methods, comprising a cathode galvanized dewatering pipe, a vacuum pump, an anode rod, a high-pressure air pump, and a heating device located outside the dewatering pipe, wherein the heating device is connected to the cathode galvanized dewatering pipe, characterized in that: The heating device includes a stainless steel coil, with the air inlet end of the stainless steel coil connected to a high-pressure air pump and the air outlet end connected to a cathode galvanized downpipe. An electric heating wire is wrapped around the stainless steel coil.

2. The dewatering device for accelerating sludge solidification using electroosmosis and heating / pressurization methods according to claim 1, characterized in that: The stainless steel coil is filled with high-pressure gas supplied by a high-pressure gas pump, and the electric heating wire on the stainless steel coil heats it, thereby heating the high-pressure gas inside the stainless steel coil.

3. The dewatering device for accelerating sludge solidification using electroosmosis and heating / pressurization methods according to claim 1, characterized in that: The electric heating wire is connected to an external power source to heat the stainless steel coil. The temperature inside the stainless steel coil is 400-500℃, and the outlet temperature is not lower than 200℃. The electric heating wire is wrapped around the surface of the stainless steel coil in sequence.

4. The dewatering device for accelerating sludge solidification using electroosmosis and heating / pressurization methods according to claim 1, characterized in that: The cathode galvanized rainwater pipe is a hollow pipe with through holes located 1-1.5 meters below the ground. The cathode galvanized rainwater pipe is surrounded by a stainless steel mesh, with the top of the stainless steel mesh located 1-1.5 meters below the ground.

5. The dewatering device for accelerating sludge solidification using electroosmosis and heating / pressurization methods according to claim 4, characterized in that: The stainless steel mesh is 70-90 mesh, and the stainless steel mesh and the cathode galvanized rainwater pipe are fastened together with iron wire.

6. The dewatering device for accelerating sludge solidification using electroosmosis and heating / pressurization methods according to claim 1, characterized in that: The cathode galvanized rainwater pipe is placed underground at its end and connected to a vacuum pump or stainless steel coil at its head. The cathode galvanized rainwater pipe is connected to the negative terminal of an external power source. The cathode galvanized rainwater pipe is powered on when it is absorbing water and blowing air.

7. The dewatering device for accelerating sludge solidification using electroosmosis and heating / pressurization methods according to claim 1, characterized in that: An anode rod is installed within a radius of 2-3 meters around the cathode galvanized downpipe. The anode rod is connected to the positive power of an external power source. Switches are installed at the locations where the anode rod and the cathode galvanized downpipe are connected to the power source.

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