Solid-liquid separation drying device
By using a solid-liquid separation and drying device with permanent magnet drums and electromagnetic heating plates during alkaline washing of steel, the problem of high solids content of alkali liquid is solved, efficient separation and drying of iron powder is achieved, and alkali consumption and wastewater discharge are reduced, and production efficiency is improved.
Patent Information
- Application Number
- CN202422411558.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-09-30
AI Technical Summary
In the prior art, the solid content of alkali liquid in the steel alkali washing process is high, resulting in the problem of large consumption of alkali liquid and large wastewater discharge, especially the difficulty in effectively separating iron powder and oil pollution.
A solid-liquid separation and drying device is adopted, including a main unit, a solid-liquid separation unit and a drying unit. The iron powder is separated by a permanent magnet drum and dried by an electromagnetic heating plate. Combined with the initial dehydration of the pressure roller and the mechanical operation of the shovel mechanism, the iron powder is efficiently separated and dried.
It effectively reduces the moisture content of iron powder, reduces alkaline liquid consumption and wastewater discharge, improves production efficiency and reduces costs.
Smart Images
Figure CN223239859U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of solid-liquid separation and drying, in particular to a solid-liquid separation and drying device. Background Art
[0002] Steel used in automobiles and home appliances is typically strip less than 1mm thick. The typical production process for steel strip includes steelmaking, continuous casting, hot rolling, cold rolling, degreasing and cleaning, annealing, flattening, electroplating, and finishing. During cold rolling, an emulsion (primarily composed of rolling oil) may be sprayed on the strip surface for lubrication. Furthermore, the grinding of the rollers during cold rolling produces a large amount of iron powder, which also adheres to the strip. Consequently, after cold rolling, a certain amount of rolling oil, iron powder, and a small amount of machine oil from the rolling mill stand remain on the strip surface. This mixture of oil and iron powder adheres firmly to the steel surface, making it difficult to remove. Therefore, degreasing and cleaning are necessary before annealing. If cleaning is not thorough, these surface residues can interfere with subsequent further processing, such as annealing, and affect the steel's quality.
[0003] Steel is typically cleaned using alkaline cleaning. This cleaning primarily utilizes a sodium hydroxide-based cleaning agent, also known as lye. After the alkaline wash, the steel can be rinsed with clean water to remove residual lye, grease, and iron particles. During the cleaning process, the lye's oil and iron content increases. When these levels reach a specified level, the lye must be replaced to ensure effective cleaning of the steel.
[0004] To reduce alkali consumption and wastewater discharge, electromagnetic filtration can be used to remove iron and oil from the alkali solution in use. After a cycle of electromagnetic filtration, the iron and oil adsorbed by the electromagnetic medium mesh must be rinsed off with clean water. The resulting wastewater contains a large amount of iron, which can be separated and dried using this device to reduce the solid content of the wastewater. Utility Model Content
[0005] In response to the deficiencies of the prior art, the utility model provides a solid-liquid separation and drying device, which solves the problem of increased iron powder content in alkali solution caused by alkali washing of steel, resulting in a high solid content in the alkali solution; solves the problem of large alkali solution consumption during alkali washing of steel; and solves the problem of large wastewater discharge.
[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a solid-liquid separation and drying device, comprising a main unit, a solid-liquid separation unit, a drying unit and a receiving box, wherein the solid-liquid separation unit is located inside the main unit, and the drying unit is connected to the outside of the main unit, characterized in that the receiving box is used to collect the dried iron powder, the main unit comprises a tank body and a liquid inlet, the liquid inlet is arranged at the top of the tank body, a liquid outlet is opened on the side of the tank body, and the tank body is used to store wastewater to be subjected to solid-liquid separation;
[0007] The solid-liquid separation unit includes a motor and a permanent magnet roller. The output end of the motor is connected to one end of the permanent magnet roller. A pressure roller is abutted on the top of the permanent magnet roller. The permanent magnet roller is used to separate iron powder from wastewater.
[0008] The drying unit includes a shoveling mechanism and an electromagnetic heating plate. The electromagnetic heating plate is fixed to the bottom of the shoveling mechanism. The heating plate is used to dry the separated iron powder.
[0009] Preferably, an emptying port is provided at the bottom of the tank body, and the emptying port is connected to an automatic valve installed at the bottom of the tank body, and the automatic valve is used to control the opening and closing of the emptying port.
[0010] Preferably, the pressing roller is rotatably mounted on the top of the tank body, and the pressing roller is used to preliminarily squeeze out surface moisture of the iron powder adsorbed by the permanent magnetic roller.
[0011] Preferably, a cylinder is connected to the side of the shoveling mechanism, and a vibration motor is fixedly provided at the bottom end of the shoveling mechanism.
[0012] Preferably, the material receiving box is arranged directly below the shoveling mechanism.
[0013] Preferably, the motor is fixedly connected to the side of the tank body, and the permanent magnet roller is installed on the inner wall of the tank body through a bearing.
[0014] Preferably, the other end of the cylinder is fixedly connected to the side of the trough body, and the shoveling mechanism is movably connected to the trough body.
[0015] The utility model discloses a solid-liquid separation and drying device, which has the following beneficial effects:
[0016] The device has a compact structure, and the compact mechanical structure makes full use of limited space, improves product performance, reduces the use of materials and processes, thereby improving production efficiency and reducing costs; it is equipped with a pressure roller and an electromagnetic heating plate. The pressure roller performs preliminary dehydration treatment on the iron powder adsorbed on the permanent magnetic roller by squeezing, and then the iron powder is shoveled off the permanent magnetic roller by a shoveling mechanism and heated by the electromagnetic heating plate to further dry out the moisture. After two dehydration processes, the iron powder finally separated has a low moisture content. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0018] Figure 1 This is a schematic diagram of the structure of the shoveling mechanism of the utility model in a separated state;
[0019] Figure 2 This is a schematic diagram of the working state structure of the shoveling mechanism of the utility model;
[0020] In the figure: 1. Main body; 11. Tank body; 12. Liquid inlet; 13. Liquid outlet; 14. Emptying port; 15. Automatic valve; 2. Solid-liquid separation unit; 21. Motor; 22. Permanent magnet roller; 23. Pressing roller; 3. Drying unit; 31. Shoveling mechanism; 32. Electromagnetic heating plate; 33. Cylinder; 34. Vibrating motor; 4. Receiving box. DETAILED DESCRIPTION
[0021] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.
[0022] The embodiment of the utility model discloses a solid-liquid separation and drying device.
[0023] According to the attached Figure 1-2 As shown, it includes a main unit 1, a solid-liquid separation unit 2, a drying unit 3 and a receiving box 4. The solid-liquid separation unit 2 is located inside the main unit 1, and the drying unit 3 is connected to the outside of the main unit 1. It is characterized in that the receiving box 4 is used to collect the dried iron powder. The main unit 1 includes a tank body 11 and a liquid inlet 12. The liquid inlet 12 is provided at the top of the tank body 11. A liquid outlet 13 is provided on the side of the tank body 11. The tank body 11 is used to store wastewater to be subjected to solid-liquid separation.
[0024] The solid-liquid separation unit 2 includes a motor 21 and a permanent magnet roller 22. The output end of the motor 21 is connected to one end of the permanent magnet roller 22. A pressure roller 23 is abutted on the top of the permanent magnet roller 22. The permanent magnet roller 22 is used to separate iron powder from wastewater.
[0025] The drying unit 3 includes a shoveling mechanism 31 and an electromagnetic heating plate 32 . The electromagnetic heating plate 32 is fixed to the bottom of the shoveling mechanism 31 . The heating plate 32 is used to dry the separated iron powder.
[0026] The device has a compact structure, and the compact mechanical structure makes full use of limited space, improves product performance, reduces the use of materials and processes, thereby improving production efficiency and reducing costs; a pressing roller 13 and an electromagnetic heating plate 32 are provided, and the pressing roller 13 performs preliminary dehydration treatment on the iron powder adsorbed on the permanent magnetic roller 22 by squeezing, and then the iron powder is shoveled off the permanent magnetic roller 22 by the shoveling mechanism 31 and heated by the electromagnetic heating plate 32 to further dry out the moisture. After two dehydration processes, the iron powder finally separated has a low moisture content.
[0027] Furthermore, an emptying port 14 is provided at the bottom of the tank body 11 , and the emptying port 14 is connected to an automatic valve 15 . The automatic valve 15 is installed at the bottom of the tank body 11 , and the automatic valve 15 is used to control the opening and closing of the emptying port 14 .
[0028] Furthermore, a pressure roller 23 is rotatably mounted on the top of the tank body 11 , and the pressure roller 23 is used to preliminarily squeeze out surface moisture of the iron powder adsorbed by the permanent magnetic roller 22 .
[0029] It is particularly disclosed that a cylinder 33 is connected to the side of the shoveling mechanism 31 , and a vibration motor 34 is fixedly provided at the bottom end of the shoveling mechanism 31 .
[0030] It is particularly disclosed that the material receiving box 4 is arranged directly below the shoveling mechanism 31 .
[0031] It should be particularly emphasized that the motor 21 is fixedly connected to the side of the tank body 11, and the permanent magnet roller 22 is installed on the inner wall of the tank body 11 through a bearing.
[0032] It should be particularly emphasized that the other end of the cylinder 33 is fixedly connected to the side of the tank body 11 , and the shoveling mechanism 31 is movably connected to the tank body 11 .
[0033] Working principle: First, solid-liquid separation is carried out: the motor 21 is started and the permanent magnetic roller 22 begins to rotate, and the wastewater containing iron powder is pumped into the tank body 11 through the liquid inlet 12. The iron powder is evenly adsorbed on the surface by the permanent magnetic roller 22, and the purified wastewater flows out through the liquid outlet 13. After processing a batch of wastewater, the automatic valve 15 is opened to empty the wastewater in the tank body 11. The permanent magnetic roller 22 continues to rotate and is squeezed by the pressure roller 13 to initially squeeze out some water;
[0034] Then the cake is unloaded: after the surface of the permanent magnet drum 22 is initially squeezed by the pressure roller 13, the cylinder 33 is pushed out, and the shoveling mechanism 31 can be attached to the surface of the permanent magnet drum 22. At the same time, the electromagnetic heating plate 31 is energized to heat the shoveling mechanism 31. The motor 21 rotates to shovel the iron powder on the surface of the permanent magnet drum 22 and flow it onto the shoveling mechanism 31. Since the shoveling mechanism 31 is heated to a higher temperature, the moisture of the wet iron powder flowing onto the shoveling mechanism 31 is evaporated. After the iron powder on the surface of the permanent magnet drum 22 is unloaded and the iron powder on the shoveling mechanism 31 is dried, the cylinder 33 is retracted and the shoveling mechanism 31 leaves the surface of the permanent magnet drum 22. The vibration motor 34 starts working, vibrating the dried iron powder off and dropping it into the receiving box 4.
[0035] Finally, after the cake unloading process is completed, the automatic valve 15 is closed and the next batch of solid-liquid separation begins.
[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.
Claims
1. A solid-liquid separation and drying device, comprising a main unit (1), a solid-liquid separation unit (2), a drying unit (3) and a receiving box (4), wherein the solid-liquid separation unit (2) is located inside the main unit (1), and the drying unit (3) is connected to the outside of the main unit (1), characterized in that: The receiving box (4) is used to collect the dried iron powder. The main unit (1) includes a tank body (11) and a liquid inlet (12). The liquid inlet (12) is arranged at the top of the tank body (11). A liquid outlet (13) is provided on the side of the tank body (11). The tank body (11) is used to store wastewater to be subjected to solid-liquid separation. The solid-liquid separation unit (2) comprises a motor (21) and a permanent magnet roller (22), wherein the output end of the motor (21) is connected to one end of the permanent magnet roller (22), a pressure roller (23) is abutted against the top of the permanent magnet roller (22), and the permanent magnet roller (22) is used to separate iron powder from wastewater; The drying unit (3) comprises a shoveling mechanism (31) and an electromagnetic heating plate (32), wherein the electromagnetic heating plate (32) is fixed to the bottom of the shoveling mechanism (31), and the electromagnetic heating plate (32) is used for drying the separated iron powder.
2. The solid-liquid separation drying device according to claim 1, characterized in that: The bottom of the tank body (11) is provided with an emptying port (14), and the emptying port (14) is connected to an automatic valve (15). The automatic valve (15) is installed at the bottom of the tank body (11), and the automatic valve (15) is used to control the opening and closing of the emptying port (14).
3. The solid-liquid separation drying device according to claim 1, characterized in that: The pressing roller (23) is rotatably mounted on the top of the tank body (11), and the pressing roller (23) is used to preliminarily squeeze out surface moisture of the iron powder adsorbed by the permanent magnetic roller (22).
4. The solid-liquid separation drying device according to claim 1, characterized in that: The side of the shoveling mechanism (31) is connected to a cylinder (33), and the bottom end of the shoveling mechanism (31) is fixedly provided with a vibration motor (34).
5. The solid-liquid separation and drying device according to claim 1, characterized in that: The material receiving box (4) is arranged directly below the material shoveling mechanism (31).
6. The solid-liquid separation and drying device according to claim 3, characterized in that: The motor (21) is fixedly connected to the side of the tank body (11), and the permanent magnet roller (22) is installed on the inner wall of the tank body (11) through a bearing.
7. The solid-liquid separation and drying device according to claim 4, characterized in that: The other end of the cylinder (33) is fixedly connected to the side of the tank body (11), and the shoveling mechanism (31) is movably connected to the tank body (11).