Waste liquid filtering device

Abstract

The present invention relates to the technical field of sewage treatment, and in particular to a waste liquid filtering device, comprising a second filtering mechanism, a first filtering mechanism and a separating mechanism, wherein the two ends of the first filtering mechanism are respectively connected to the second filtering mechanism and the separating mechanism, and the second filtering mechanism, the first filtering mechanism and the separating mechanism are arranged in sequence from high to low; wherein the separating mechanism is used to further adsorb the iron-containing metal particles in the waste liquid and separate them from the waste liquid. In this scheme, the waste liquid enters the second filtering mechanism, and after preliminary filtration, most of the impurities with larger particles can be filtered out. The waste liquid after preliminary filtration enters the first filtering mechanism and the separating mechanism in sequence, and the iron-containing metal particles in the waste liquid are adsorbed and recovered to avoid waste of resources. Through the two-stage recovery mode of the first filtering mechanism and the separating mechanism, the adsorption and collection effect of the iron-containing metal particles can be further improved.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, and in particular to a waste liquid filtering device. Background Art

[0002] The wastewater from steel mills is mainly divided into indirect cooling water for equipment, direct cooling water for equipment products, and wastewater from production processes. The wastewater from steel mills contains a large amount of iron-containing metal particles. Whether from the perspective of environmental protection or resource conservation, the iron-containing metal particles need to be collected and recycled. However, the existing metal component filtering device has a single filtering method, poor filtering effect, and cannot collect the filtered iron-containing metal particles, resulting in a waste of resources. Summary of the invention

[0003] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a waste liquid filtering device for solving the problem that the filtered iron-containing metal particles cannot be collected in the prior art.

[0004] To achieve the above-mentioned object and other related objects, the present invention provides a waste liquid filtering device, comprising a first filtering mechanism, a second filtering mechanism, and a separation mechanism, wherein both ends of the first filtering mechanism are respectively connected to the second filtering mechanism and the separation mechanism, and the second filtering mechanism, the first filtering mechanism, and the separation mechanism are arranged in descending order;

[0005] Wherein, the second filtering mechanism is used to filter particulate matter in the waste liquid;

[0006] The first filtering mechanism is used to absorb and collect iron-containing metal particles in the waste liquid;

[0007] The separation mechanism is used to further absorb the iron-containing metal particles in the waste liquid and separate them from the waste liquid.

[0008] Optionally, the first filtering mechanism includes a box body and an electromagnet disposed in the box body, and the electromagnet is used to absorb iron-containing metal particles in the waste liquid.

[0009] Optionally, the first filtering mechanism includes a box body, a filter tube for adsorbing ferrous metal particles in the waste liquid, a mounting plate, and an electromagnet for adsorbing ferrous metal particles in the waste liquid. One side of the box body is open and the mounting plate is engaged in the opening. The first end of the filter tube is detachably connected to the mounting plate. The electromagnet is arranged in the first end portion of the filter tube. The second end of the filter tube is detachably connected to the inner wall of the box body. The filter tube is a silicon steel tube or a soft iron tube.

[0010] Optionally, a plurality of the filter tubes are arranged in a vertical direction, and a plurality of filter holes are radially opened on the filter tubes.

[0011] Optionally, a slot is provided on the inner wall of the box body, and the second end of the filter tube is detachably connected to the slot.

[0012] Optionally, the separation mechanism includes a cylinder and a magnetic block disposed in the cylinder, and the magnetic block is used to further absorb iron-containing metal particles in the waste liquid.

[0013] Optionally, an impeller is rotatably disposed in the cylinder for rotating the waste liquid.

[0014] Optionally, a water outlet is provided at the bottom of the cylinder, and a scraper is rotatably provided at the bottom of the cylinder, the scraper cooperates with the water outlet, and the scraper is used to sweep the iron-containing metal particles in the waste liquid into the water outlet.

[0015] Optionally, a valve for opening and closing the water outlet is provided in the water outlet.

[0016] Optionally, the second filtering mechanism includes a tank body and a filter net arranged in the tank body.

[0017] As described above, a waste liquid filtering device of the present invention has the following beneficial effects:

[0018] The waste liquid enters the second filtering mechanism, and after preliminary filtration, most of the impurities with larger particles can be filtered out. The waste liquid after preliminary filtration enters the first filtering mechanism and the separation mechanism in turn, and the iron-containing metal particles in the waste liquid are adsorbed and recovered to avoid waste of resources. Through the two-stage recovery mode of the first filtering mechanism and the separation mechanism, the adsorption and collection effect of the iron-containing metal particles can be further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the filter unit according to an embodiment of the present invention;

[0021] Figure 3 A longitudinal sectional view of the front side of an embodiment of the present invention;

[0022] Figure 4 It is a partial enlarged view of point A of an embodiment of the present invention.

[0023] Part Number Description

[0024] 1-separation mechanism; 2-first filtering mechanism; 3-second filtering mechanism; 4-flange; 5-mounting plate; 6-support foot; 7-filter tube; 8-filter hole; 9-magnetic block; 10-valve; 11-water outlet; 12-motor; 13-impeller; 14-scraper; 15-slot; 16-filter screen; 17-sealing plate; 18-electromagnet. DETAILED DESCRIPTION

[0025] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0026] It should be noted that the diagram provided in the present embodiment only illustrates the basic concept of the present invention in a schematic manner, so the diagram only shows the components related to the present invention rather than drawing according to the number, shape and size of the components during actual implementation. The type, quantity and ratio of each component during actual implementation can be a random change, and the component layout type may also be more complicated. The structure, ratio, size, etc. illustrated in the drawings of the present specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions that the present invention can implement, so they have no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effect that the present invention can produce and the purpose that can be achieved. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of narration, and are not used to limit the scope of the present invention. The change or adjustment of its relative relationship should also be regarded as the scope of the present invention without substantially changing the technical content.

[0027] See also Figure 1 This embodiment provides a waste liquid filtering device, including a second filtering mechanism 3, a first filtering mechanism 2 and a separating mechanism 1 which are connected in sequence, the two ends of the first filtering mechanism 2 are connected to the second filtering mechanism 3 and the separating mechanism 1 respectively, and the second filtering mechanism 3, the first filtering mechanism 2 and the separating mechanism 1 are arranged in sequence from high to low. Among them, the second filtering mechanism 3 is used to filter particulate matter in the waste liquid; the first filtering mechanism 2 is used to adsorb and collect iron-containing metal particles in the waste liquid; the separating mechanism 1 is used to further adsorb iron-containing metal particles in the waste liquid and separate them from the waste liquid. A water inlet is opened at the top of the second filtering mechanism 3, and the waste liquid enters the second filtering mechanism 3 from the water inlet.

[0028] In one embodiment, if Figure 1 As shown, the water inlet of the second filter mechanism 3 is threadedly connected with a flange 4. When the inside of the second filter mechanism 3 needs to be cleaned, the flange 4 is rotated down from the water inlet to open the water inlet, and then the cleaning work is completed, which is convenient for cleaning the inside of the second filter mechanism 3.

[0029] In one embodiment, the first filtering mechanism 2 includes a box body and an electromagnet 18, the box body is a rectangular parallelepiped or a cube, and the electromagnet 18 is arranged on the inner wall of one side or both sides of the box body. The electromagnet 18 is magnetic when powered on, and loses its magnetism when powered off. It can adsorb ferrous metal particles when powered on, and the ferrous metal particles are separated from the electromagnet 18 when powered off, which facilitates the adsorption and recovery of ferrous metal particles. The electromagnet 18 can adsorb ferrous metal particles in the waste liquid flowing through the first filtering mechanism 2, thereby completing the collection of ferrous metal particles in the waste liquid.

[0030] In one embodiment, if Figure 2 and Figure 3 As shown, the first filtering mechanism 2 includes a box body, an electromagnet 18, a mounting plate 5 and a plurality of filter tubes 7. The right side of the box body is open, the mounting plate 5 is engaged in the opening, a sealing plate 17 is fixedly mounted on the left side of the mounting plate 5, and a handle for holding is mounted on the right side of the mounting plate 5. The left end of the filter tube 7 is detachably connected to the left inner wall of the box body, the electromagnet 18 is arranged in the right end of the filter tube 7, and the right end of the filter tube 7 is threadedly connected to the left side of the sealing plate 17. The filter tube 7 is a silicon steel tube or a soft iron tube, so that the electromagnet 18 can magnetize the filter tube 7 after being energized, and the magnetism of the filter tube 7 disappears after the electromagnet 18 is powered off. The filter tube 7 has a longer length and a larger surface area, so that the electromagnet 18 has a better absorption effect on ferrous metal particles and a higher recovery efficiency.

[0031] There are multiple filter tubes 7, which are staggered from top to bottom, to further improve the adsorption efficiency and adsorption effect of the filter tubes 7. The arrangement of the mounting plate 5 and the sealing plate 17 facilitates the user to pull out the mounting plate 5 from one side of the box, thereby facilitating the cleaning of metal particles on the surface and inside of the filter tube 7. The detachable installation at both ends of the filter tube 7 facilitates the disassembly of the filter tube 7 after use, thereby facilitating the cleaning of the filter tube 7.

[0032] In one embodiment, if Figure 2 and Figure 4 As shown, a plurality of filter holes 8 are provided along the radial direction of the filter tube 7 for facilitating the passage of waste liquid and adsorbing iron-containing metal particles, and each filter hole 8 is sequentially arranged along the circumferential direction and axial direction of the filter tube 7. The filter holes 8 can increase the passing speed of the waste liquid in the box, thereby improving the filtering efficiency of the waste liquid.

[0033] In one embodiment, if Figure 3As shown, a card slot 15 is provided on the left inner wall of the box body, and the number of the card slots 15 is the same as the number of the filter tubes 7, and they correspond one to one. The left end of the filter tube 7 is engaged with the card slot 15, so that the left end of the filter tube 7 can be detachably installed on the left inner wall of the box body. The provision of the card slot 15 improves the stability of the installation of the left end of the filter tube 7 in the box body.

[0034] In one embodiment, the separation mechanism 1 includes a cylinder and a magnetic block 9 disposed in the cylinder, the magnetic block 9 is magnetic, the cylinder is cylindrical in shape, and the interior is an inverted trapezoid. There are multiple magnetic blocks 9, which are respectively disposed on the inner wall of the cylinder. The waste liquid flowing into the separation mechanism 1 flows down along the inner wall of the cylinder, and the waste liquid contacts the magnetic block 9, so that the iron-containing metal particles remaining in the waste liquid are adsorbed on the magnetic block 9, which plays a role in further adsorbing and cleaning the iron-containing metal particles.

[0035] In one embodiment, the magnetic block 9 comprises an electromagnet.

[0036] In one embodiment, if Figure 3 As shown, the bottom of the cylinder is rotatably connected to an impeller 13, and the blades of the impeller 13 are all arranged horizontally. The motor 12 is fixedly arranged on the bottom of the cylinder, and is used to drive the impeller 13 to rotate. The waste liquid flows down from the upper part of the cylinder and accumulates at the bottom. The rotation of the impeller 13 can make the accumulated waste liquid rotate and generate centrifugal force, so that the waste liquid is thrown to the side wall of the cylinder, and the iron-containing metal particles in the waste liquid are collected again.

[0037] In one embodiment, if Figure 3 As shown, a support foot 6 is fixedly provided on the outer bottom of the cylinder, and the support foot 6 is used to support the second filtering mechanism 3, the first filtering mechanism 2 and the separation mechanism 1.

[0038] In one embodiment, if Figure 3 As shown, a water outlet 11 is provided on the bottom of the cylinder and runs through the bottom. A scraper 14 coaxial with the impeller 13 is rotatably provided at the bottom of the cylinder. The scraper 14 can sweep the iron-containing metal particles remaining at the bottom of the cylinder into the water outlet 11 and discharge them from the cylinder.

[0039] In one embodiment, if Figure 3 As shown, a valve 10 for opening and closing the water outlet is provided in the water outlet 11. The valve 10 is an electromagnetic valve, which is convenient for the user to control the opening and closing of the water outlet 11.

[0040] In one embodiment, if Figure 3As shown, the second filtering mechanism 3 includes a tank body and a filter screen 16 disposed in the tank body, the filter screen 16 is a metal filter screen, the outer shape of the tank body is cylindrical, the inner shape of the tank body is hourglass-shaped, the filter screen 16 is horizontally disposed in the middle of the tank body, and the filter screen 16 completely covers the gap in the middle of the tank body, and the filter screen 16 can preliminarily filter impurities and particles in the waste liquid. The hourglass-shaped design can speed up the flow rate of the waste liquid in the tank body and improve the waste liquid filtering efficiency.

[0041] As described above, a waste liquid filtering device of this embodiment has the following beneficial effects:

[0042] The waste liquid enters the second filtering mechanism, and after preliminary filtration, most of the impurities with larger particles can be filtered out. The waste liquid after preliminary filtration enters the first filtering mechanism and the separation mechanism in turn, and the iron-containing metal particles in the waste liquid are adsorbed and recovered to avoid waste of resources. Through the two-stage recovery mode of the first filtering mechanism and the separation mechanism, the adsorption and collection effect of the iron-containing metal particles can be further improved.

[0043] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A waste liquid filtering device, characterized in that: It comprises a first filtering mechanism, a second filtering mechanism, and a separating mechanism, wherein two ends of the first filtering mechanism are respectively connected with the second filtering mechanism and the separating mechanism, and the second filtering mechanism, the first filtering mechanism and the separating mechanism are arranged in descending order; Wherein, the second filtering mechanism is used to filter particulate matter in the waste liquid; The first filtering mechanism is used to absorb and collect iron-containing metal particles in the waste liquid; The separation mechanism is used to further absorb the iron-containing metal particles in the waste liquid and separate them from the waste liquid; The first filtering mechanism comprises a box, a filter tube for absorbing iron-containing metal particles in the waste liquid, a mounting plate, and an electromagnet for absorbing iron-containing metal particles in the waste liquid, one side of the box is open and the mounting plate is engaged in the opening, the first end of the filter tube is detachably connected to the mounting plate, the electromagnet is arranged in the first end of the filter tube, the second end of the filter tube is detachably connected to the inner wall of the box, and the filter tube is a silicon steel tube or a soft iron tube; There are a plurality of filter tubes arranged in the vertical direction, and a plurality of filter holes are opened in the radial direction on the filter tubes; A slot is provided on the inner wall of the box, and the second end of the filter tube is detachably connected to the slot; The separation mechanism comprises a cylinder and a magnetic block disposed in the cylinder, wherein the magnetic block is used to further absorb iron-containing metal particles in the waste liquid; An impeller is rotatably arranged in the cylinder body for rotating the waste liquid; A water outlet is provided at the bottom of the cylinder, and a scraper is rotatably provided at the bottom of the cylinder. The scraper cooperates with the water outlet and is used to sweep the iron-containing metal particles in the waste liquid into the water outlet.

2. The waste liquid filtering device according to claim 1, characterized in that: The first filtering mechanism includes a box body and an electromagnet arranged in the box body, and the electromagnet is used to absorb iron-containing metal particles in the waste liquid.

3. The waste liquid filtering device according to claim 1, characterized in that: A valve for opening and closing the water outlet is arranged in the water outlet.

4. The waste liquid filtering device according to claim 1, characterized in that: The second filtering mechanism includes a tank body and a filtering net arranged in the tank body.

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