A two-stage magnetic recovery device

Abstract

This utility model relates to the technical field of water treatment equipment, specifically disclosing a two-stage magnetic recovery device, including a two-stage magnetic recovery component and a flushing assembly mounted on a water outlet pipe. The two-stage magnetic recovery component includes several magnets and a housing for holding the magnets. The housing of the two-stage magnetic recovery component is semi-circular in shape, allowing it to be fitted snugly to the bottom of the outer wall of the water outlet pipe. The flushing assembly includes several flushing heads and a flushing water pipe for water flow. The flushing heads are fixedly connected to and communicate with the flushing water pipe, and are equidistantly arranged on the water outlet pipe. The flushing ends of the flushing heads penetrate and extend into the interior of the water outlet pipe, allowing them to flush away magnetic powder from the bottom of the water outlet pipe. This utility model, through the two-stage magnetic recovery component, further adsorbs magnetic powder in the effluent, improving water quality and achieving magnetic powder recovery, thus reducing operating costs.

Description

Technical Field

[0001] This utility model relates to the field of water treatment equipment technology, and in particular to a two-stage magnetic recovery device. Background Technology

[0002] In the wastewater treatment industry, flocculants, coagulants, and magnetic powder are added to the wastewater to cause fine suspended particles and colloidal particles in the water to aggregate and form magnetic flocs, which facilitates solid-liquid separation of the flocs from the wastewater. In magnetic coagulation wastewater treatment processes, magnetic drums (also known as "magnetic recovery machines") are used to recover and reuse magnetic powder from magnetic sludge. However, existing single-stage magnetic powder recovery devices suffer from poor magnetic powder separation, resulting in the leakage of magnetic powder into the effluent, reducing effluent quality and impairing its sensory characteristics.

[0003] In engineering applications, some solutions involve setting up a transfer tank at the outlet of the magnetic recovery machine, with magnetic rods or plates inserted into the tank to further adsorb magnetic powder. However, this requires manually removing the magnetic rods or plates to scrape off the magnetic powder, which is inefficient and affects the continuous operation of the equipment.

[0004] Therefore, we propose a two-stage magnetic recovery device to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a two-stage magnetic recovery device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A two-stage magnetic recovery device includes a two-stage magnetic recovery component and a flushing assembly installed on a water outlet pipe;

[0008] The secondary magnetic recovery component includes several magnets and a package for holding the magnets.

[0009] The enclosure of the secondary magnetic recovery component is semi-circular in shape. The secondary magnetic recovery component can be installed in close contact with the bottom of the outer wall of the water outlet pipe. Several magnets can attract magnetic powder and cause the magnetic powder to accumulate at the bottom of the water outlet pipe.

[0010] The rinsing assembly includes several rinsing heads and a rinsing water pipe for water flow. The several rinsing heads are fixedly connected to and communicate with the rinsing water pipe. The several rinsing heads are equidistantly arranged on the water outlet pipe, and the rinsing ends of the several rinsing heads all penetrate and extend into the interior of the water outlet pipe. The several rinsing heads can rinse the magnetic powder at the bottom of the water outlet pipe.

[0011] Preferably, it also includes an electromagnetic three-way valve installed downstream of the secondary magnetic recovery unit. The electromagnetic three-way valve is used to control the direction of water flow and is installed and connected to the water outlet pipe.

[0012] Preferably, the end of the electromagnetic three-way valve opposite to the outlet pipe is also provided with a system outlet pipe and a magnetic powder flushing return pipe.

[0013] Preferably, the enclosure of the secondary magnetic recycling component is composed of an inner mask plate, an outer mask plate, and a side mask plate, and several magnets are wrapped by the inner mask plate, the outer mask plate, and the side mask plate, with the inner mask plate attached to the side wall of the water outlet pipe.

[0014] Preferably, a plurality of the magnets are stacked in one or more layers inside the package.

[0015] Preferably, all of the flushing heads are fixedly connected to the outer wall of the water outlet pipe via a mounting plate, and the mounting plate is sealed and fitted to the side wall of the water outlet pipe.

[0016] Preferably, multiple sets of the secondary magnetic recovery components can be provided.

[0017] Preferably, the end of the water outlet pipe away from the electromagnetic three-way valve is connected to a primary magnetic recovery system.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] This invention adds a magnetic recovery component to the water outlet pipe of the primary magnetic recovery machine, thus providing a secondary magnetic recovery component. The structure and control are simple. It uses magnetic adsorption to attract magnetic powder in the water outlet pipe, causing it to accumulate in the magnetic area, thereby further reducing the magnetic powder content in the water and improving the quality of the water. It can both further adsorb magnetic powder to improve the quality of the water and achieve the purpose of magnetic powder recovery, which helps to reduce operating costs and does not affect the continuous operation of the system. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the secondary magnetic recovery component of this utility model;

[0022] Figure 2 This is a cross-sectional view of the end face of the water outlet pipe of this utility model;

[0023] Figure 3 This is a side sectional view of the water outlet pipe of this utility model;

[0024] Figure 4 This is the front view of the present invention.

[0025] In the diagram: 1. Inner membrane plate; 2. Outer membrane plate; 3. Magnet; 4. Partition plate; 5. Side membrane plate; 6. Flushing water pipe; 7. Mounting plate; 8. Flushing head; 9. Water outlet pipe; 10. Secondary magnetic recovery component; 11. Flushing assembly; 12. Solenoid three-way valve; 13. System water outlet pipe; 14. Magnetic powder flushing return pipe; 15. Primary magnetic recovery system. Detailed Implementation

[0026] 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.

[0027] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around" and other terms indicating orientation or positional relationship are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] A two-stage magnetic recovery device includes a two-stage magnetic recovery component 10 and a flushing assembly 11 disposed on a water outlet pipe 9;

[0029] The secondary magnetic recycling component 10 includes a number of magnets 3 and a package for placing the magnets 3; the package of the secondary magnetic recycling component 10 is semi-circular in shape, and the secondary magnetic recycling component 10 can be installed in close contact with the bottom of the outer wall of the water outlet pipe 9. The magnets 3 can attract magnetic powder and cause the magnetic powder to accumulate at the bottom of the water outlet pipe 9.

[0030] The flushing assembly 11 includes several flushing heads 8 and a flushing water pipe 6 for water flow. The flushing water pipe 6 can connect to the outlet water pipe 9 and realize pump reuse, that is, flushing with the outlet water pipe 9. The flushing water pipe 6 can be matched with water pump equipment to achieve the effects of backflow and flushing water pressurization. The several flushing heads 8 are all fixedly connected and communicate with the flushing water pipe 6. The several flushing heads 8 are equidistantly arranged on the outlet water pipe 9, and the flushing ends of the several flushing heads 8 all penetrate and extend into the interior of the outlet water pipe 9. The several flushing heads 8 can flush the magnetic powder at the bottom of the outlet water pipe 9. The flushing pressure of the several flushing heads 8 is generally set according to the amount of magnetic powder accumulation to ensure that the magnetic powder can be flushed. For example, when a single layer of magnet is installed, the flushing pressure of the flushing heads 8 can be set to 2 bar to ensure that the magnetic powder can be flushed.

[0031] It also includes an electromagnetic three-way valve 12 installed downstream of the secondary magnetic recovery unit 10. The electromagnetic three-way valve 12 is used to control the direction of water flow and is connected to the water outlet pipe 9. The end of the electromagnetic three-way valve 12 away from the water outlet pipe 9 is also equipped with a system water outlet pipe 13 and a magnetic powder flushing return pipe 14. The system water outlet pipe 13 is used for water discharge, and the magnetic powder flushing return pipe 14 is used to return the water to the magnetic powder return tank, where it can be collected with the magnetic powder recovered by the primary magnetic recovery unit and then returned to the sewage treatment system.

[0032] The enclosure of the secondary magnetic recycling component 10 consists of an inner cover plate 1, an outer cover plate 2, and a side cover plate 5. Several magnets 3 are wrapped by the inner cover plate 1, the outer cover plate 2, and the side cover plate 5. The inner cover plate 1 is attached to the side wall of the water outlet pipe 9. Several magnets 3 are stacked in one or more layers inside the enclosure.

[0033] Several flushing heads 8 are fixedly connected to the outer wall of the water outlet pipe 9 via mounting plates 7, and the mounting plates 7 are sealed and fitted to the side wall of the water outlet pipe 9.

[0034] Multiple sets of secondary magnetic recovery components 10 can be set.

[0035] The end of the outlet pipe 9 away from the solenoid three-way valve 12 is connected to a primary magnetic recovery system 15, which is a primary magnetic recovery machine. The primary magnetic recovery system 15 is connected to the sewage treatment system, which includes a reaction tank, a primary magnetic recovery machine, a magnetic powder return tank, etc., all of which are commonly used equipment in existing sewage treatment systems.

[0036] In one state, when the magnetic powder accumulates to a certain amount, the flushing program is started, that is, several flushing heads 8 flush the magnetic powder at the bottom of the water pipe 6 to make it flow, and at the same time the water outlet switches to the return mode, that is, the system water outlet pipe 13 of the electromagnetic three-way valve 12 is closed, the magnetic powder flushing return pipe 14 is opened, and the magnetic powder flows back to the magnetic powder return tank of the sewage treatment system with the water flow, and is collected together with the magnetic powder recovered and returned by the primary magnetic recovery machine, which is used to replenish the magnetic powder concentration in the reaction tank of the sewage treatment system.

[0037] In one state, the flushing program stops, the flushing water pipe 6 contains a valve, the flushing program control stops, the valve closes, and water no longer enters the flushing water pipe 6, waiting for the next program to start. The electromagnetic three-way valve 12 switches to the system water outlet mode, the system water outlet pipe 13 opens, and adsorption continues.

[0038] The secondary magnetic recovery unit 10 provided by this utility model has a simple structure and control. It can further adsorb magnetic powder to improve the quality of the effluent and achieve the purpose of magnetic powder recovery, which helps to reduce operating costs and does not affect the continuous operation of the system.

[0039] In one specific embodiment, the outlet pipe 9 has a circular cross-section, and the enclosure of the secondary magnetic recovery component 10 is semi-circular. The magnets 3 are placed in double layers, and the magnets 3 can be spaced apart by partitions 4. The enclosure of the secondary magnetic recovery component 10 is made into a module of a certain length, and the number of modules, i.e., the number of rotation groups, is selected according to the water quality and quantity parameters, and is wrapped around the outlet pipe 9.

[0040] In one embodiment, the wastewater treatment system is designed with an influent flow rate of 10,000 m³. 3 Given an influent SS (suspended solids) concentration of 100 mg / L and an effluent SS concentration of 10 mg / L, the total sludge volume is calculated to be 100 m³. 3 / d (sludge moisture content 99%), two sets of standard magnetic recycling modules are selected.

[0041] In another embodiment, the wastewater treatment system is designed with an influent flow rate of 10,000 m³. 3 Given an influent SS (suspended solids) concentration of 50 mg / L and an effluent SS concentration of 10 mg / L, the total sludge volume is calculated to be 50 m³. 3 / d (sludge moisture content 99%), one set of standard magnetic recycling module is selected.

[0042] In another embodiment, the wastewater treatment system is designed with an influent flow rate of 5000 m³ / h. 3 Given an influent SS (suspended solids) concentration of 100 mg / L and an effluent SS concentration of 10 mg / L, the total sludge volume is calculated to be 100 m³. 3 / d (sludge moisture content 99%), one set of standard magnetic recycling module is selected.

[0043] 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 the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A two-stage magnetic recovery device, characterized in that, Includes a secondary magnetic recovery unit (10) and a flushing assembly (11) installed on the water outlet pipe (9); The secondary magnetic recycling component (10) includes a plurality of magnets (3) and a package for holding the plurality of magnets (3); The enclosure of the secondary magnetic recycling component (10) is semi-circular in shape. The secondary magnetic recycling component (10) can be installed in close contact with the bottom of the outer wall of the water outlet pipe (9). Several magnets (3) can attract magnetic powder and make the magnetic powder accumulate at the bottom of the water outlet pipe (9). The flushing assembly (11) includes several flushing heads (8) and a flushing water pipe (6) for passing water. The several flushing heads (8) are fixedly connected and communicate with the flushing water pipe (6). The several flushing heads (8) are equidistantly arranged on the water outlet pipe (9), and the flushing ends of the several flushing heads (8) all penetrate and extend into the interior of the water outlet pipe (9). The several flushing heads (8) can flush the magnetic powder at the bottom of the water outlet pipe (9).

2. The secondary magnetic recovery device according to claim 1, characterized in that, It also includes an electromagnetic three-way valve (12) installed downstream of the secondary magnetic recovery unit (10). The electromagnetic three-way valve (12) is used to control the direction of water flow. The electromagnetic three-way valve (12) is installed and connected to the water outlet pipe (9).

3. The secondary magnetic recovery device according to claim 2, characterized in that, The electromagnetic three-way valve (12) is also provided with a system water outlet pipe (13) and a magnetic powder flushing return pipe (14) at the end opposite to the water outlet pipe (9).

4. The secondary magnetic recovery device according to claim 1, characterized in that, The magnetic recycling component is composed of an inner cover plate (1), an outer cover plate (2) and a side cover plate (5). Several magnets (3) are wrapped by the inner cover plate (1), the outer cover plate (2) and the side cover plate (5). The inner cover plate (1) is attached to the side wall of the water outlet pipe (9).

5. The secondary magnetic recovery device according to claim 1, characterized in that, Several of the magnets (3) are stacked in one or more layers inside the package.

6. The two-stage magnetic recovery device according to claim 1, characterized in that, Several of the flushing heads (8) are fixedly connected to the outer wall of the water outlet pipe (9) via mounting plates (7), and the mounting plates (7) are sealed and fitted to the side wall of the water outlet pipe (9).

7. The secondary magnetic recovery device according to claim 1, characterized in that, The secondary magnetic recovery unit (10) can be set in multiple sets.

8. The secondary magnetic recovery device according to claim 2, characterized in that, The outlet pipe (9) is connected to a primary magnetic recovery system (15) at the end away from the electromagnetic three-way valve (12).

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