Magnetic adsorption device for sewage treatment

Abstract

The utility model discloses a magnetic adsorption device for sewage treatment. The magnetic adsorption device comprises a fixed shaft; the inner cylinder comprises at least three supporting circular plates, a plurality of supporting strips and a plurality of magnetic blocks which are coaxially arranged, each supporting circular plate is provided with a first shaft hole, the fixed shaft rotatably penetrates through the first shaft hole, the outer edge of each supporting circular plate comprises a large arc section and a small arc section, the central angle of each small arc section is 70-90 degrees, each large arc section is provided with a plurality of through holes, and each through hole is communicated with the corresponding first shaft hole. The multiple penetrating holes are formed in the arc forming direction of the large arc section, the bearing strips penetrate through the penetrating holes corresponding to the positions of the at least three supporting circular plates, magnetic blocks are laid on the outer sides of the bearing strips, and the multiple positioning blocks are installed on the circumferential face of the supporting circular plate in the middle and arranged at intervals in the circumferential direction of the supporting circular plate. The magnetic seed recovery device solves the problem that the recovery efficiency of magnetic seeds on the roller of the existing sewage treatment equipment is low.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment equipment, in particular to a magnetic adsorption device for sewage treatment. Background Art

[0002] In sewage treatment, iron removal is a very important technology. Iron is one of the common water pollutants. The presence of a large amount of iron ions will affect the safety of water quality and cause many problems, such as scale, water quality degradation, etc. Existing sewage treatment equipment (such as the Chinese patent with publication number CN102086052A) uses a rolling magnetic seed recovery drum with a magnetic attraction force on the surface to absorb magnetic seeds, and scrapes off the magnetic seeds on the magnetic seed recovery drum through a magnetic seed scraper whose scraping surface is set in the rolling direction of the magnetic seed recovery drum. As the drum rotates, there are still more magnetic seeds adsorbed on the drum. Therefore, the recovery efficiency of the above-mentioned drum scraping off the magnetic seeds through the scraper is low.

[0003] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0004] In order to overcome the defects of the prior art, a magnetic adsorption device for sewage treatment is provided to solve the problem of low magnetic seed recovery efficiency on the drum of the existing sewage treatment equipment.

[0005] In order to achieve the above object, a magnetic adsorption device for sewage treatment is provided, comprising:

[0006] A fixed shaft is installed on the notch of the sewage tank;

[0007] The inner cylinder comprises at least three coaxially arranged support circular plates, a plurality of support strips and a plurality of magnetic blocks, the support circular plate is provided with a first axial hole, the fixed shaft is rotatably penetrated in the first axial hole, the outer edge of the support circular plate comprises a large arc segment and a small arc segment, the central angle of the small arc segment is 70° to 90°, the large arc segment is provided with a plurality of through holes, the plurality of through holes are arranged along the arc direction of the large arc segment, the support strips are penetrated in the through holes corresponding to the positions of the at least three support circular plates, the outer side of the support strips is paved with the magnetic blocks, the circumferential surface of the support circular plate at the middle position is provided with a plurality of positioning blocks, the plurality of positioning blocks are arranged at intervals along the circumferential direction of the support circular plate;

[0008] An outer cylinder fixedly sleeved on the outside of the inner cylinder, the outer cylinder having a closed end and an open end, a cover plate detachably mounted on the open end, the closed end and the cover plate respectively having second shaft holes, the fixed shaft rotatably sleeved in the closed end and the second shaft holes of the cover plate, a gap is formed between the multiple magnetic blocks and the inner wall of the outer cylinder, and the multiple positioning blocks are supported on the inner wall of the outer cylinder;

[0009] The driving motor is transmission-connected to the outer cylinder.

[0010] Furthermore, it also includes a scraper, one side of which is against the circumferential surface of the outer cylinder, and the other side of which is installed in the notch.

[0011] Furthermore, a flange is connected to the outer edge of the opening end, and the flange is detachably connected to the cover plate by bolts.

[0012] Furthermore, one end of the fixed shaft is rotatably sleeved with a sleeve, the sleeve is inserted into a first shaft hole of a supporting circular plate at one end of the inner cylinder and a second shaft hole of the cover plate, and the drive motor is transmission-connected to the sleeve.

[0013] Furthermore, the central angle of the small arc segment is 90°.

[0014] Furthermore, the number of the magnetic blocks arranged on the support bar is multiple, and the multiple magnetic blocks are arranged along the length direction of the support bar. The magnetic blocks include two unit magnets, and the two magnetic poles of the unit magnets are arranged along the length direction of the support bar. The magnetic poles at the opposite ends of the two unit magnets are attracted to each other, and the magnetic poles at the opposite ends of two adjacent magnetic blocks repel each other.

[0015] The beneficial effect of the utility model is that the magnetic adsorption device for sewage treatment of the utility model is used to be set up on the notch of the sewage tank, the outer cylinder is arranged horizontally, and the lower part of the outer cylinder is immersed in the sewage in the sewage tank. The driving motor drives the outer cylinder and the inner cylinder to rotate together, and the part of the outer cylinder where the magnetic block is arranged is immersed in the sewage to adsorb the magnetic metal substances in the sewage. Since the scraper is arranged on the circumferential surface of the outer cylinder, one side of the scraper is against the circumferential surface of the outer cylinder. With the integral rotation of the outer cylinder and the inner cylinder, the scraper intercepts the magnetic metal substances (such as magnetic seeds) on the outer wall of the outer cylinder in the area where the magnetic block is arranged. When the outer cylinder continues to rotate and the scraper is aligned with the area where the magnetic block is not arranged (i.e., the small arc section of the supporting circular plate), the magnetic force of the area disappears, so the magnetic metal substances left on the outer cylinder by the scraper fall on the scraper. In this way, the magnetic adsorption device for sewage treatment of the utility model has a high recovery efficiency for the magnetic metal substances in the sewage. On the other hand, since the positioning block is provided on the inner cylinder, the distance between the inner wall of the outer cylinder and the magnetic block is relatively stable, which improves the magnetic distribution of the outer cylinder and further improves the removal efficiency of magnetic metal substances in sewage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0017] Figure 1 It is a structural schematic diagram of a magnetic adsorption device for sewage treatment according to an embodiment of the utility model.

[0018] Figure 2 It is a cross-sectional view of a magnetic adsorption device for sewage treatment according to an embodiment of the utility model.

[0019] Figure 3 Schematic diagram of the layout of magnetic blocks according to an embodiment of the utility model.

[0020] Figure 4 It is a cross-sectional view of the inner cylinder of the embodiment of the utility model.

[0021] Figure 5 It is a schematic structural diagram of the small arc section of the supporting circular plate of an embodiment of the utility model.

[0022] Figure 6 Schematic diagram of the magnetic pole arrangement of the magnetic block according to the embodiment of the utility model. DETAILED DESCRIPTION

[0023] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings.

[0024] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] Reference Figures 1 to 5 As shown, the utility model provides a magnetic adsorption device for sewage treatment, comprising: a fixed shaft 1, an inner cylinder 2, an outer cylinder 3, and a driving motor 4.

[0026] The fixed shaft 1 is installed on the notch of the sewage tank. The fixed shaft can be arranged along the length direction or the width direction of the notch of the sewage tank. In the embodiment, one end of the fixed shaft is installed on one side of the notch through a bracket. The drive motor is installed on the other side of the notch. The drive motor is arranged at the other end of the fixed shaft.

[0027] See also Figures 3 to 5 The inner cylinder 2 includes a supporting circular plate 21, a supporting bar 22 and a magnetic block 23.

[0028] The number of the supporting circular plates 21 is at least three. In this embodiment, the number of the supporting circular plates is three. The three supporting circular plates 21 are coaxially arranged.

[0029] The number of the supporting bars 22 and the number of the magnetic blocks 23 are plural.

[0030] The supporting circular plate 21 is provided with a first axial hole. The first axial hole is arranged at the center of the supporting plate. The fixed shaft 1 is rotatably arranged in the first axial holes of the three supporting circular plates.

[0031] See also Figure 5 As shown, the outer edge of the supporting circular plate 21 includes a large arc segment and a small arc segment 210 .

[0032] The large arc segment is provided with a plurality of perforations. The plurality of perforations are arranged along the arc direction of the large arc segment. The support bar 22 is arranged in the perforations corresponding to the positions of at least three supporting circular plates 21. The center angle of the small arc segment 210 is 70° to 90°. Preferably, the center angle of the small arc segment of the supporting circular plate is 90°. No perforations are provided at the small arc segment.

[0033] The outer side of the support bar 22 is provided with a magnetic block 23. The circumferential surface of the support circular plate 21 in the middle position is provided with a plurality of positioning blocks 24. The plurality of positioning blocks 24 are arranged at intervals along the circumferential direction of the support circular plate 21.

[0034] One side of the whole inner cylinder is formed with a gap, and no magnetic blocks and supporting strips are arranged at the gap. In the large arc section of the supporting circular plate of the inner cylinder, i.e. the magnetic area, the magnetic blocks on two adjacent supporting strips are arranged at equal spacing.

[0035] The outer cylinder is made of non-magnetic material. The outer cylinder 3 is fixedly sleeved on the outside of the inner cylinder 2. The outer cylinder 3 has a closed end and an open end. The open end of the outer cylinder is detachably mounted with a cover plate 31. The closed end and the cover plate 31 are respectively provided with a second axial hole. The fixed shaft 1 is rotatably sleeved in the second axial hole of the closed end and the cover plate 31. A gap is formed between the multiple magnetic blocks 23 and the inner wall of the outer cylinder 3. In this embodiment, the gap between the inner wall of the outer cylinder and the magnetic blocks, that is, the distance is 0.5 to 1.5 mm. Multiple positioning blocks 24 are supported on the inner wall of the outer cylinder 3.

[0036] Since a plurality of positioning blocks are arranged in the middle of the inner cylinder to support the outer cylinder, when the length of the outer cylinder is large, the distance between each part of the inner wall of the outer cylinder and the magnetic blocks is relatively uniform, thereby ensuring the magnetic strength of the outer side of the outer cylinder.

[0037] The driving motor 4 is drivingly connected to the outer cylinder 3 .

[0038] The magnetic adsorption device for sewage treatment of the utility model is used to be set up on the notch of the sewage tank, and the outer cylinder is arranged horizontally, and the lower part of the outer cylinder is immersed in the sewage in the sewage tank. The driving motor drives the outer cylinder and the inner cylinder to rotate together, and the part of the outer cylinder where the magnetic block is arranged is immersed in the sewage to adsorb the magnetic metal substances in the sewage. Since the scraper is arranged on the circumferential surface of the outer cylinder, one side of the scraper is against the circumferential surface of the outer cylinder. With the integral rotation of the outer cylinder and the inner cylinder, the scraper intercepts the magnetic metal substances (such as magnetic seeds) on the outer wall of the outer cylinder in the area where the magnetic block is arranged. When the outer cylinder continues to rotate and the scraper is aligned with the area where the magnetic block is not arranged (i.e., the small arc section of the supporting circular plate), the magnetic force of the area disappears, so the magnetic metal substances left on the outer cylinder by the scraper fall on the scraper. In this way, the magnetic adsorption device for sewage treatment of the utility model has a high recovery efficiency for the magnetic metal substances in the sewage. On the other hand, since the positioning block is provided on the inner cylinder, the distance between the inner wall of the outer cylinder and the magnetic block is relatively stable, which improves the magnetic distribution of the outer cylinder and further improves the removal efficiency of magnetic metal substances in sewage.

[0039] In this embodiment, the magnetic adsorption device for sewage treatment of the utility model further comprises a scraper (not shown in the drawings). One side of the scraper abuts against the circumferential surface of the outer cylinder 3. The other side of the scraper is installed in the notch.

[0040] See also Figure 1 and Figure 2As shown, in this embodiment, the outer edge of the open end of the outer cylinder is connected with a flange 32. The flange 32 is detachably connected to the cover plate 31 by bolts.

[0041] As a preferred implementation, see Figure 4 As shown, one end of the fixed shaft 1 is rotatably sleeved with a sleeve 41. The sleeve 41 is inserted into the first shaft hole of the support circular plate 21 at one end of the inner cylinder 2 and the second shaft hole of the cover plate 31. The driving motor 4 is drivingly connected to the sleeve 41.

[0042] In this embodiment, the driving motor is connected to the shaft sleeve via a speed reducer.

[0043] See also Figure 3 and Figure 5 As shown, there are multiple magnetic blocks 23 disposed on the support bar 22. The multiple magnetic blocks 23 are disposed along the length direction of the support bar 22, and the magnetic blocks 23 include two unit magnets 231. The two magnetic poles of the unit magnets are disposed along the length direction of the support bar 22.

[0044] See also Figure 6 As shown, the magnetic poles at the opposite ends of the two unit magnets are attracted to each other. The magnetic poles at the opposite ends of two adjacent magnetic blocks 23 repel each other. The spacing between two adjacent magnetic blocks is 2 mm.

[0045] In this embodiment, the magnetic blocks are arranged in the above-mentioned magnetic pole arrangement manner to arrange the unit magnets of the magnetic blocks. Compared with the conventional magnetic block arrangement (ie, the magnetic poles of adjacent magnetic blocks are attracted to each other), the magnetism of the magnetic blocks on the entire support bar is stronger.

[0046] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the utility model. For example, the above features are replaced with the technical features with similar functions disclosed in the present application (but not limited to) by each other to form a technical solution.

Claims

1. A magnetic adsorption device for sewage treatment, characterized in that: include: A fixed shaft is installed on the notch of the sewage tank; The inner cylinder comprises at least three coaxially arranged support circular plates, a plurality of support strips and a plurality of magnetic blocks, the support circular plate is provided with a first axial hole, the fixed shaft is rotatably penetrated in the first axial hole, the outer edge of the support circular plate comprises a large arc segment and a small arc segment, the central angle of the small arc segment is 70° to 90°, the large arc segment is provided with a plurality of through holes, the plurality of through holes are arranged along the arc direction of the large arc segment, the support strips are penetrated in the through holes corresponding to the positions of the at least three support circular plates, the outer side of the support strips is paved with the magnetic blocks, the circumferential surface of the support circular plate at the middle position is provided with a plurality of positioning blocks, the plurality of positioning blocks are arranged at intervals along the circumferential direction of the support circular plate; An outer cylinder fixedly sleeved on the outside of the inner cylinder, the outer cylinder having a closed end and an open end, a cover plate detachably mounted on the open end, the closed end and the cover plate respectively having second shaft holes, the fixed shaft rotatably sleeved in the closed end and the second shaft holes of the cover plate, a gap is formed between the multiple magnetic blocks and the inner wall of the outer cylinder, and the multiple positioning blocks are supported on the inner wall of the outer cylinder; The driving motor is transmission-connected to the outer cylinder.

2. The magnetic adsorption device for sewage treatment according to claim 1, characterized in that: It also includes a scraper, one side of which is against the circumferential surface of the outer cylinder, and the other side of which is installed in the notch.

3. The magnetic adsorption device for sewage treatment according to claim 1, characterized in that: The outer edge of the opening end is connected with a flange, and the flange is detachably connected to the cover plate by bolts.

4. The magnetic adsorption device for sewage treatment according to claim 1, characterized in that: One end of the fixed shaft is rotatably sleeved with a sleeve, the sleeve is inserted into a first shaft hole of a supporting circular plate at one end of the inner cylinder and a second shaft hole of the cover plate, and the driving motor is drivingly connected to the sleeve.

5. The magnetic adsorption device for sewage treatment according to claim 1, characterized in that: The center angle of the small arc segment is 90°.

6. The magnetic adsorption device for sewage treatment according to claim 1, characterized in that: There are multiple magnetic blocks arranged on the support bar, and the multiple magnetic blocks are arranged along the length direction of the support bar. The magnetic blocks include two unit magnets, and the two magnetic poles of the unit magnets are arranged along the length direction of the support bar. The magnetic poles at the opposite ends of the two unit magnets are attracted to each other, and the magnetic poles at the opposite ends of two adjacent magnetic blocks repel each other.

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