Steel production wastewater treatment device

Abstract

The invention provides a steel production wastewater treatment device. The steel production wastewater treatment device comprises a treatment tank of which an inlet and an outlet are respectively communicated with a wastewater runner, and two iron slag removal mechanisms which are symmetrically arranged on the left side wall and the right side wall of the treatment tank, the iron slag removing mechanism comprises a frame detachably installed on the side wall of the treatment tank and an iron plate arranged on the frame, the front face of the iron plate faces the inner space of the treatment tank, and a magnetic sheet is attached to the back face of the iron plate; the magnetic sheets of the two iron slag removing mechanisms are correspondingly arranged, and the magnetic poles of the corresponding magnetic sheets are opposite to each other and magnetically attract each other. According to the device, the magnetic iron plate of the magnetic sheet is used for adsorbing iron slag in the steel wastewater, the iron slag contained in the wastewater can be effectively removed, meanwhile, collection of the iron slag is facilitated, and the iron slag removal efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the field of wastewater treatment, and particularly relates to a wastewater treatment device for steel production. Background Art

[0002] In the production of steel and related products, such as the production of wire rods, steel pipes, and steel plates, and in the production of steel parts, for example, iron filings and other impurities are mixed in the wastewater generated. In the wastewater treatment process, there is an iron filings treatment link. Currently, magnets such as electromagnets or permanent magnets are usually used. The magnet is arranged in the wastewater treatment tank. During the process of wastewater flowing through the treatment tank, the magnetic property of the magnet is used to adsorb iron slag in the water to remove the iron slag in the wastewater.

[0003] The disadvantage of using an electromagnet to remove iron slag is that the iron slag cannot be collected separately. In this method, due to the complex structure and large weight of the electromagnet itself, the electromagnet is basically fixedly connected to the wastewater treatment tank. To facilitate the removal of the iron slag on the electromagnet, the power supply of the electromagnet needs to be disconnected first before removing the iron slag, so that the magnetism of the electromagnet disappears. The iron slag adsorbed on the electromagnet directly falls to the bottom of the treatment tank and is mixed with other impurities deposited at the bottom of the treatment tank. After the sediment is cleared out of the treatment tank, the iron slag and other impurities need to be separated secondly to facilitate various, resulting in the complication of production and the increase of cost.

[0004] The disadvantage of using a permanent magnet to remove iron slag is that it is difficult to separate the iron slag from the permanent magnet. In the current operation of using a permanent magnet to remove iron slag, to prevent the iron slag from being mixed with other impurities deposited at the bottom of the treatment tank, the permanent magnet is lifted by a hoisting method. Usually, an electric hoist is used to lift the permanent magnet into the treatment tank to adsorb the iron slag in the wastewater in the treatment tank. After the iron slag adsorbed on the permanent magnet reaches a certain level, the permanent magnet is first lifted out of the treatment tank, and then the iron slag on the permanent magnet is removed. Although this method realizes the separate collection of iron slag, due to the continuous existence of the magnetism of the permanent magnet, that is, the adsorption force on the iron slag always exists, it brings great difficulty to the operation of separating the iron slag from the permanent magnet. Summary of the Invention

[0005] In view of this, the present invention aims to provide a wastewater treatment device for steel production to improve the removal efficiency of iron filings in wastewater and realize the separate collection of iron filings in wastewater.

[0006] To achieve the above object, the technical solution of the present invention is realized as follows:

[0007] A wastewater treatment device for steel production includes a treatment tank with inlets and outlets respectively connected to a wastewater flow channel, and two iron slag removal mechanisms symmetrically arranged on the left and right side walls of the treatment tank;

[0008] The iron slag removal mechanism includes a frame detachably installed on the side wall of the treatment tank, and an iron plate arranged on the frame. A hoisting structure is arranged at the top of the frame. The front of the iron plate faces the inner space of the treatment tank, and a magnetic sheet is attached to the back of the iron plate.

[0009] The magnetic sheets of the two iron slag removal mechanisms are arranged correspondingly, and the magnetic poles of the corresponding magnetic sheets are facing each other and magnetically attracting.

[0010] Furthermore, the magnetic sheet is a rectangular magnetic sheet, and several magnetic sheets of each iron plate are arranged side by side from left to right.

[0011] Furthermore, a partition is arranged between every two adjacent magnetic sheets on the iron plate, and the partition is a non-magnetic conductive partition.

[0012] Furthermore, the top of the magnetic sheet is set higher than the top end of the partition.

[0013] Furthermore, the iron plate is provided with threaded holes, and the threaded holes are matched with setscrews, and the tail ends of the setscrews face the magnetic sheets.

[0014] Furthermore, the setscrew is arranged close to the top of the iron plate.

[0015] Furthermore, installation grooves matching the frame are formed on the side wall of the treatment tank. Slide grooves are respectively formed on the left and right side walls of the installation groove in the vertical direction. Slide rails are respectively arranged on the left and right side faces of the frame in the vertical direction, and the slide rails are slidably connected with the slide grooves.

[0016] Furthermore, a number of vertical rods are arranged at the bottom of the treatment tank.

[0017] Furthermore, the treatment tank is a non-magnetic conductive treatment tank.

[0018] Furthermore, the width of the treatment tank is greater than the width of the wastewater flow channel, and the inlet and outlet of the treatment tank are respectively communicated with the wastewater flow channel through trumpet-shaped connecting parts.

[0019] Compared with the prior art, the steel production wastewater treatment device of the present invention has the following advantages:

[0020] (1) In the present invention, the iron plate has good magnetic conductivity. The magnetic sheet is used to make the iron plate adsorb iron slag in the steel wastewater. At the same time, the magnetic poles of the corresponding magnetic sheets on both sides of the treatment tank are facing each other and magnetically attracting, so that the magnetic field intensity in the treatment tank is uniform and stable, improving the effect of the iron plate adsorbing iron slag. At the same time, since the iron slag removal mechanism and the treatment tank are detachably connected, the iron slag removal mechanism can be removed according to needs in the later stage, and then the magnetic sheet and the iron plate are separated, and the iron plate loses magnetism, which is convenient to remove the iron slag from the iron plate, realizing the separate collection of iron slag and improving the removal efficiency and effect of iron slag in the wastewater.

[0021] (2) In the present invention, several magnetic tiles are arranged side by side on each iron plate, and non-magnetic-conducting partitions are arranged between every two adjacent magnetic tiles. A magnetic tile slot is formed between two adjacent non-magnetic-conducting partitions, which is convenient for positioning and installing the magnetic tiles. After installation, the corresponding two magnetic tiles on the two iron plates have opposite magnetic poles and opposite magnetism, ensuring a strong magnetic field intensity in the treatment tank, increasing the adsorption force on iron slag in the wastewater, and improving the iron slag removal effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings forming a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0023] Figure 1 is the front view of a steel production wastewater treatment device according to this embodiment;

[0024] Figure 2 is the top view of a steel production wastewater treatment device according to this embodiment;

[0025] Figure 3 is the front view three-dimensional schematic diagram of the frame in this embodiment;

[0026] Figure 4 is the rear view three-dimensional schematic diagram of the frame in this embodiment;

[0027] Figure 5 is the rear view three-dimensional schematic diagram of the iron slag removal mechanism in this embodiment;

[0028] Figure 6 is the top view of the treatment tank in this embodiment.

[0029] Description of the reference numerals in the drawings:

[0030] 1 - wastewater flow channel; 2 - iron slag removal mechanism; 21 - frame; 22 - iron plate; 23 - magnetic tile; 24 - partition; 25 - positioning groove; 26 - bottom plate; 27 - setscrew; 28 - slide rail; 3 - vertical rod; 4 - treatment tank; 41 - installation groove; 42 - chute; 5 - flared connecting part. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] The present invention will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0032] As Figure 1 , 2As shown in the figure, a steel production wastewater treatment device includes a treatment tank 4, and the treatment tank 4 is a non-magnetic treatment tank, such as a ceramic, plastic, or stainless steel treatment tank, etc. The treatment tank 4 is arranged on the wastewater flow channel 1 for the flow of steel wastewater, that is, the inlet and outlet of the treatment tank 4 are respectively connected to the wastewater flow channel 1. The production wastewater flows from the wastewater flow channel 1 into the treatment tank 4. After the iron slag removal treatment is completed in the treatment tank 4, it then flows into the next wastewater treatment link through the wastewater flow channel 1. Iron slag removal mechanisms 2 are respectively provided on the left and right side walls of the treatment tank 4, and the two iron slag removal mechanisms 2 are symmetrically arranged.

[0033] The iron slag removal mechanism 2 includes a frame 21, and the frame 21 is detachably installed on the inner wall of the treatment tank 4. A hoisting structure, such as a lifting ring, is arranged at the top of the frame 21 to facilitate the hoisting of the iron slag removal mechanism 2. An iron plate 22 is provided on the frame 21, the front surface of the iron plate 22 faces the internal space of the treatment tank 4, and a magnetic sheet 23 is attached to the back surface of the iron plate 22. One magnetic pole of the magnetic sheet 23 is attached to the back surface of the iron plate 22, and the other magnetic pole faces away from the iron plate 22. After installation, the magnetic sheets 23 of the two iron slag removal mechanisms 2 are arranged correspondingly, and the magnetic poles of the corresponding magnetic sheets 23 are facing each other and magnetically attracting. For example, if the N pole of the magnetic sheet 23 of one iron slag removal mechanism 2 faces the internal space of the treatment tank 4, then correspondingly, the S pole of the magnetic sheet 23 of the other iron slag removal mechanism 2 needs to face the internal space of the treatment tank 4. At this time, the magnetic force lines of the two magnetic sheets pass through the corresponding iron plates and have the same direction in the treatment tank 4, so that the magnetic field strength in the treatment tank 4 is enhanced, the adsorption force of the iron plate on the iron slag in the wastewater is increased, and thus the iron slag removal effect in the wastewater is improved.

[0034] In this embodiment, the structure of the frame 21 is as Figure 3 、 4 shown. The frame 21 includes two vertical frames. Slide rails 28 are integrally formed on the outer sides of the two vertical frames in the vertical direction respectively. A cross beam is connected to the tops of the two vertical frames, and a bottom plate 26 is connected to the bottoms. The iron plate 22 is fixed on the frame 21. A plurality of partition plates 24 are arranged side by side from left to right on the back surface of the iron plate 22. The partition plates 24 are rectangular non-magnetic partition plates, such as plastic partition plates or stainless steel partition plates, etc. A rectangular positioning groove 25 for installing the magnetic sheet is formed between each adjacent two partition plates 24 and between the outermost partition plate and the vertical frame of the frame respectively, for installing the magnetic sheet 23. The magnetic sheet structure is a rectangular magnetic sheet matching the positioning groove, and one magnetic sheet 23 is installed in each positioning groove 25, as Figure 5As shown in the figure, the magnetic sheet 23 and the iron plate 22 are fixed by the adsorption force between the magnetic sheet 23 and the iron plate 22. When installing the magnetic sheet 23, first, the magnetic pole arrangement directions of the magnetic sheets 23 of each iron slag removal mechanism 2 should be the same and perpendicular to the direction of the iron plate 22. At the same time, it is also necessary to ensure that the magnetic pole directions of the magnetic sheets 23 of the two iron slag removal mechanisms 2 are opposite. For example, if the N poles of all the magnetic sheets 23 of one iron slag removal mechanism 2 are in close contact with the iron plate 22, that is, facing the inner space of the treatment tank 4, then at this time, the S poles of all the magnetic sheets 23 of the other iron slag removal mechanism 2 are in close contact with the iron plate, that is, facing the inner space of the treatment tank 4, so as to ensure that the magnetic field directions formed by the magnetic sheets of the two iron slag removal mechanisms 2 in the treatment tank 4 are the same, increase the adsorption force on the iron slag in the wastewater, and improve the iron slag removal effect.

[0035] In this embodiment, the top of the magnetic sheet 23 is set higher than the top end of the partition plate 24. Threaded holes are respectively provided at the corresponding positions of the upper part of the iron plate 22 for each magnetic sheet 23. The position of the threaded hole is higher than the liquid level of the wastewater in the treatment tank 4. The threaded hole is matched with a setscrew 27, and the end of the setscrew 27 faces the magnetic sheet 23. When it is necessary to remove the magnetic sheet 23 and remove the iron slag on the iron plate 22, the magnetic sheet 23 and the iron plate 22 are separated by using the setscrew, which is convenient to remove the magnetic sheet 23, make the iron plate 22 lose magnetism, and then the iron slag on the iron plate 22 can be quickly removed.

[0036] In this embodiment, the structure of the treatment tank 4 is as Figure 6 shown. Installation grooves 41 matching the frame 21 are respectively provided on the two side walls of the treatment tank. Slide grooves 42 are respectively provided on the left and right side walls of the installation groove 41 in the vertical direction. When installing the iron slag removal mechanism 2, the slide rails 28 of the frame 21 are inserted into the slide grooves 42 to realize the insertion connection between the installation groove 41 and the treatment tank 4, and the iron slag removal mechanism 2 is located in the installation groove 41. When the iron plate adsorbs iron filings to a certain extent, it is necessary to remove the iron filings on the iron plate. At this time, an electric hoist can be used to lift the iron slag removal mechanisms 2 on both sides of the treatment tank away from the treatment tank 4. After the iron slag removal mechanism 2 is lifted away, the magnetic sheet is removed to make the iron plate lose magnetism, and the iron plate loses the adsorption ability for the iron filings, which is convenient to remove the iron filings adsorbed on the iron plate.

[0037] In this embodiment, to further improve the effect of removing iron slag from the wastewater in the treatment tank 4, a number of vertical rods 3 are provided at the bottom of the treatment tank 4. The setting of the vertical rods 3 damps the flow rate of the wastewater, reduces its flow rate, increases the time for the wastewater to flow through the treatment tank 4, and improves the iron slag treatment effect.

[0038] In addition, the width of the treatment tank 4 is greater than the width of the wastewater flow channel 1. The inlet and outlet of the treatment tank 4 are respectively connected to the wastewater flow channel 1 through trumpet-shaped connecting parts 5. This structure can also slow down the flow rate of the wastewater when it enters the treatment tank 4 from the wastewater flow channel 1, so as to improve the adsorption effect of the iron slag in the wastewater by the iron plate.

[0039] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. An iron and steel production wastewater treatment device, characterized in that: It includes a treatment tank (4) with its inlet and outlet respectively communicating with the wastewater flow channel (1), and two iron slag removal mechanisms (2) symmetrically arranged on the left and right side walls of the treatment tank; The iron slag removal mechanism (2) includes a frame (21) detachably installed on the side wall of the treatment tank (4), and an iron plate (22) arranged on the frame (21). A hoisting structure is arranged at the top of the frame (21). The front of the iron plate (22) faces the inner space of the treatment tank (4), and a magnetic sheet (23) is attached to the back of the iron plate (22); The magnetic sheets (23) of the two iron slag removal mechanisms (2) are arranged corresponding to each other, and the magnetic poles of the corresponding magnetic sheets (23) are facing each other and magnetically attracting each other.

2. The steel production wastewater treatment device according to claim 1, characterized in that: The magnetic sheet (23) is a rectangular magnetic sheet, and several magnetic sheets (23) of each iron plate (22) are arranged side by side from left to right.

3. The wastewater treatment device for steel production according to claim 2, characterized in that: The iron plate (22) is provided with a partition (24) between every two adjacent magnetic sheets (23), and the partition (24) is a non-magnetic conductive partition.

4. The wastewater treatment device for steel production according to claim 3, characterized in that: The top of the magnetic sheet (23) is set higher than the top end of the partition (24).

5. An iron and steel production wastewater treatment device according to claim 1, characterized in that: The iron plate (22) is provided with threaded holes, and the threaded holes are matched with setscrews (27). The tail ends of the setscrews (27) face the magnetic sheet (23).

6. The wastewater treatment device for steel production according to claim 5, wherein: The setscrew (27) is arranged close to the top of the iron plate (22).

7. An iron and steel production wastewater treatment device according to claim 1, characterized in that: The side wall of the treatment tank (4) is provided with an installation groove (41) matching the frame (21). The left and right side walls of the installation groove (41) are respectively provided with sliding grooves (42) in the vertical direction. The left and right side faces of the frame (21) are respectively provided with sliding rails (28) in the vertical direction, and the sliding rails (28) are slidably connected with the sliding grooves (42).

8. An iron and steel production wastewater treatment device according to claim 1, characterized in that: Several vertical rods (3) are arranged at the bottom of the treatment tank (4).

9. The steel production wastewater treatment device according to claim 1, characterized in that: The treatment tank (4) is a non-magnetic conductive treatment tank.

10. A steel production wastewater treatment device according to claim 1, characterized in that: The width of the treatment tank (4) is greater than the width of the wastewater flow channel (1). The inlet and outlet of the treatment tank (4) are respectively communicated with the wastewater flow channel (1) through a flared connecting part (5).

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