Industrial wastewater filtering device

Abstract

The utility model relates to the technical field of wastewater treatment, in particular to an industrial wastewater filtering device which comprises a filtering barrel, an annular aeration pipe and an arc-shaped supporting bottom, and a wastewater inlet is formed in the top of the filtering barrel; the annular aeration pipe is arranged at the middle lower part of the filtering barrel and is fixed on the inner wall of the filtering barrel. The arc-shaped support bottom is of an annular structure with a high edge, a low inner side and a hollow middle part and is arranged at the bottom of the filter barrel, the outer side of the top of the arc-shaped support bottom is connected with the inner wall of the filter barrel, and the lower surface of the arc-shaped support bottom is connected with the upper surface of a bottom plate in the filter barrel. A waste mud settling outlet is formed in the middle of the lower end surface of the filter barrel; a clear water outlet is formed in the middle-upper part of the filter barrel. Industrial wastewater enters the filtering barrel from the wastewater inlet in the top of the filtering barrel, the annular aeration pipe is arranged on the lower middle portion of the filtering barrel for aeration, and the arc-shaped supporting bottom is arranged at the bottom of the filtering barrel, so that sludge, metal waste and the like in the industrial wastewater can be conveniently deposited, gathered to the waste sludge sedimentation outlet formed in the center of the lower end face of the filtering barrel and discharged.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment, and more specifically, particularly relates to an industrial wastewater filtering device. Background Art

[0002] Industrial wastewater includes production wastewater, production sewage and cooling water, which refers to wastewater and waste liquid generated in the industrial production process, which contains industrial production materials, intermediate products, by-products and pollutants generated in the production process that are lost with water. Industrial wastewater is of various types and has complex components. For example, electrolytic salt industrial wastewater contains mercury, heavy metal smelting industrial wastewater contains various metals such as lead and cadmium, electroplating industrial wastewater contains various heavy metals such as cyanide and chromium, petroleum refining industrial wastewater contains phenol, and pesticide manufacturing industrial wastewater contains various pesticides. Since industrial wastewater often contains a variety of toxic substances, polluting the environment is very harmful to human health. Therefore, it is necessary to develop comprehensive utilization, turn harm into benefit, and take corresponding purification measures according to the composition and concentration of pollutants in the wastewater before it can be discharged. In the treatment of industrial wastewater, a filtering device is needed. However, in the prior art, when filtering industrial wastewater, a single aeration device is used, which is not convenient for separating sediments, and a sedimentation tank needs to be set up separately. Utility Model Content

[0003] The utility model aims to solve the problem in the prior art that, when filtering industrial wastewater, a single aeration device is used, which is not convenient for separating sediments and requires a separate sedimentation tank. The utility model aims to provide an industrial wastewater filtering device that can remove organic matter, suspended matter, nitrogen, phosphorus and other pollutants in industrial wastewater by aeration, and can also promote the separation of particulate matter in the wastewater without the need to add other equipment.

[0004] An industrial wastewater filtration device comprises a filter barrel, an annular aeration pipe and an arc-shaped support bottom. A wastewater inlet is arranged at the top of the filter barrel; the annular aeration pipe is arranged at the middle and lower part of the filter barrel, and the annular aeration pipe is fixed to the inner wall of the filter barrel. The arc-shaped support bottom is an annular structure with high edges, low inner sides and a hollow middle part. The arc-shaped support bottom is arranged at the bottom of the filter barrel, the outer side of the top of the arc-shaped support bottom is connected to the inner wall of the filter barrel, and the lower surface of the arc-shaped support bottom is connected to the upper surface of the inner bottom plate of the filter barrel. A waste sludge sedimentation outlet is arranged in the middle of the lower end surface of the filter barrel, and a clean water outlet is arranged in the middle and upper part of the filter barrel.

[0005] Furthermore, a filter net is provided inside the filter barrel, and the filter net surrounds the clean water outlet and is connected to one end of the filter barrel.

[0006] Furthermore, a stirring rod is vertically arranged in the filter barrel, the top of the stirring rod is rotatably connected to the filter barrel, the stirring rod is provided with stirring blades, and the filter barrel is provided with a driving mechanism for driving the stirring rod to rotate. A false bottom plate is arranged above the hollow middle part of the arc-shaped bottom support, and the false bottom plate is located below the lower end of the stirring rod.

[0007] Furthermore, the driving mechanism includes a circulation pipe, a circulation pump, a spray pipe and a nozzle. The circulation pipe is arranged on the outside of the filter barrel and one end is connected to the position above the annular aeration pipe, and the other end extends to the top of the filter barrel. The circulation pump is arranged on the circulation pipe, and the spray pipe is arranged at the top of the circulation pipe and extends into the filter barrel. The spray head is installed at one end of the spray pipe away from the circulation pipe, and the spray head sprays toward the stirring blade.

[0008] Furthermore, at least two layers of stirring blades are axially arranged on the stirring rod, the number of the stirring blades on the top layer is four, and they are distributed in a circular array. The top of the circulation pipe is annularly sleeved on the outside of the filter barrel, and the four injection pipes are distributed in a circular array and each corresponds to one stirring blade.

[0009] Furthermore, a plurality of direct aeration pipes are arranged on the false bottom plate, and the plurality of direct aeration pipes are arranged at equal intervals.

[0010] Furthermore, the bottom of the filter barrel is provided with supporting legs, and at least three of the supporting legs are distributed in a circular array.

[0011] Furthermore, the waste mud sedimentation outlet is connected to a mud outlet pipe, and a mud pump is arranged on the mud outlet pipe; the clean water outlet is connected to a clean water pipe, and a clean water pump is arranged on the clean water pipe.

[0012] Furthermore, the filter barrel includes a barrel upper part and a barrel lower part that are fixedly connected, the barrel upper part is a conical structure, the barrel lower part is a cylindrical structure, the thick end of the barrel upper part has the same diameter as the barrel lower part, and the clean water outlet is arranged on the upper end surface of the barrel lower part.

[0013] Furthermore, an upper slag outlet is provided at the lower part of the upper part of the barrel, and the upper slag outlet is connected to a slag discharge pipe.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The industrial wastewater filtering device of the utility model is characterized in that industrial wastewater enters the filtering barrel from the wastewater inlet at the top of the filtering barrel, and an annular aeration pipe is arranged in the middle and lower part of the filtering barrel for aeration. By arranging an arc-shaped bottom support at the bottom of the filtering barrel, it is convenient for sludge, metal waste and the like in the industrial wastewater to be deposited and converge to the waste sludge settling outlet opened at the center of the lower end surface of the filtering barrel, so that the sludge, metal waste and other sediments in the industrial wastewater are separated and settled and discharged from the filtering barrel.

[0016] The industrial wastewater filter device of the utility model prevents upper scum from entering the clean water outlet by setting a filter net. The setting of the stirring rod and stirring blades helps to mix the industrial wastewater and gas in the filter barrel evenly. The setting of the false bottom plate prevents the stirring blades from disturbing the sediment at the bottom of the filter barrel. The driving mechanism is composed of a circulation pipe, a circulation pump, a spray pipe and a nozzle, so that the nozzle sprays to the stirring blade, drives the stirring rod to rotate for stirring, saves energy and ensures uniform aeration. The straight aeration pipe above the false bottom plate can not only aerate, but also prevent sediment from accumulating on the false bottom plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a schematic diagram of the overall structure of the industrial wastewater filtering device in Example 1.

[0019] Figure 2 It is a cross-sectional view of the industrial wastewater filtering device in Example 1.

[0020] Figure 3 It is a three-dimensional cross-sectional view of the industrial wastewater filtering device in Example 1.

[0021] Figure 4 It is a partial structural top view of the industrial wastewater filtering device in Example 1.

[0022] Figure 5 It is a schematic diagram of the overall structure of the industrial wastewater filtering device in Example 2.

[0023] In the figure: 1, filter barrel; 101, upper part of barrel; 102, lower part of barrel; 2, wastewater inlet; 3, ring-shaped aeration pipe; 4, arc-shaped bottom support; 5, waste mud sedimentation outlet; 6, filter screen; 7, stirring rod; 8, stirring blade; 9, false bottom plate; 10, circulation pipe; 11, circulation pump; 12, injection pipe; 13, nozzle; 14, straight aeration pipe; 15, support leg; 16, mud outlet pipe; 17, mud pump; 18, clean water pipe; 19, clean water pump; 20, slag outlet pipe; 21, first ventilation pipe; 22, second ventilation pipe. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Embodiment 1:

[0026] like Figure 1-Figure 4 As shown, the industrial wastewater filtration device in this embodiment includes a filter barrel 1, an annular aeration pipe 3 and an arc-shaped support bottom 4, and a wastewater inlet 2 is arranged at the top of the filter barrel 1. The annular aeration pipe 3 is arranged in the middle and lower part of the filter barrel 1, and the annular aeration pipe 3 is fixed on the inner wall of the filter barrel 1. The annular aeration pipe 3 is connected to the first ventilation pipe 21, and the first ventilation pipe 21 penetrates the side wall of the filter barrel 1 and extends to the outside. The annular aeration pipe 3 is connected to the external air pump through the first ventilation pipe 21. The arc-shaped support bottom 4 is an annular structure with high edges, low inner sides and hollowed out in the middle. The arc-shaped support bottom 4 is arranged at the bottom of the filter barrel 1, and the outer side of the top of the arc-shaped support bottom 4 is connected to the inner wall of the filter barrel 1, and the lower surface of the arc-shaped support bottom 4 is connected to the upper surface of the inner bottom plate of the filter barrel 1. A waste mud sedimentation outlet 5 is arranged in the middle of the lower end surface of the filter barrel 1, and the waste mud sedimentation outlet 5 is connected to a mud outlet pipe 16, and a mud pump 17 is arranged on the mud outlet pipe 16. A clean water outlet is arranged in the middle and upper part of the filter barrel 1.

[0027] In this embodiment, the filter barrel 1 includes a barrel upper part 101 and a barrel lower part 102 which are fixedly connected. The barrel upper part 101 is a conical structure, and the barrel lower part 102 is a cylindrical structure. The thick end of the barrel upper part 101 has the same diameter as the barrel lower part 102, and the barrel upper part 101 and the barrel lower part 102 are coaxially arranged. The clean water outlet is arranged on the upper end surface of the barrel lower part 102. A filter screen 6 is arranged below the upper end surface of the barrel lower part 102, and the filter screen 6 surrounds one end of the clean water outlet connected to the filter barrel, thereby preventing upper scum from entering the clean water outlet. The clean water outlet is connected to a clean water pipe 18, and a clean water pump 19 is arranged on the clean water pipe 18. The annular aeration pipe 3 is arranged on the barrel lower part 102, and the arc-shaped support bottom 4 is arranged on the lower end surface of the barrel lower part 102.

[0028] In this embodiment, a stirring rod 7 is vertically arranged in the filter barrel 1, a bearing seat is arranged on the upper end surface of the barrel upper part 101, a bearing is arranged in the bearing seat, and the top of the stirring rod 7 passes through the upper end surface of the barrel upper part 101 and is connected to the bearing. A stirring blade 8 is arranged on the stirring rod 7, and a driving mechanism for driving the stirring rod 7 to rotate is arranged on the filter barrel 1. A false bottom plate 9 is arranged above the hollow middle part of the arc-shaped bottom 4, and the false bottom plate 9 is located below the lower end of the stirring rod 7. Specifically, a support rod is fixed to the lower surface of the false bottom plate 9.

[0029] In this embodiment, three layers of stirring blades 8 are arranged axially on the stirring rod 7, and the stirring blades 8 of the uppermost layer are arranged at the inner top of the barrel upper part 101, and the number is four, and the four stirring blades 8 are distributed in a circular array. The stirring blades 8 of the middle layer and the lowermost layer are located at the barrel lower part 102, and the stirring blades 8 of the lowermost layer are located at the bottom of the stirring rod 7.

[0030] The driving mechanism includes a circulation pipe 10, a circulation pump 11, a spray pipe 12 and a spray head 13. The circulation pipe 10 is arranged outside the filter barrel 1, and one end of the circulation pipe 10 passes through the outer wall of the barrel lower part 102, connecting the space above the annular aeration pipe 3, and the other end of the circulation pipe 10 extends to the top of the barrel upper part 101 and is annularly sleeved outside the barrel upper part 101. The circulation pump 11 is arranged at one end of the circulation pipe 10 close to the barrel lower part 102. The spray pipe 12 is arranged inside the annular top of the circulation pipe 10 and extends into the barrel upper part 101. There are four spray pipes 12, which are distributed in an annular array and each corresponds to a stirring blade 8. The spray head 13 is installed at one end of the spray pipe 12 away from the circulation pipe 10, and the spray head 13 sprays toward the stirring blade 8. Specifically, the stirring rod 7 is not on the extension line of the spray pipe 12, and the extension lines of adjacent spray pipes 12 are arranged vertically.

[0031] In this embodiment, the false bottom plate 9 is a circular structure, and a plurality of straight aeration pipes 14 are arranged on the false bottom plate 9. The plurality of straight aeration pipes 14 are parallel to each other and arranged at equal intervals. The plurality of straight aeration pipes 14 have different lengths, and both ends of the straight aeration pipes 14 extend to the inner side of the edge of the false bottom plate 9. A second ventilation pipe 22 is connected to the middle of the straight aeration pipe 14, and the second ventilation pipe 22 penetrates the side wall of the lower part 102 of the barrel and extends to the outside. The straight aeration pipe 14 is connected to an external air pump through the second ventilation pipe 22.

[0032] In this embodiment, support legs 15 are provided at the bottom of the filter barrel 1, and at least three support legs 15 are distributed in a circular array.

[0033] The working principle of the industrial wastewater filtration device in this embodiment is:

[0034] Industrial wastewater enters the filter barrel 1 from the wastewater inlet 2 at the top of the filter barrel 1. The middle and lower part of the filter barrel 1 is provided with an annular aeration pipe 3 for aeration. By providing an arc-shaped support bottom 4 at the bottom of the filter barrel 1, it is convenient for sludge, metal waste and the like in the industrial wastewater to settle and converge to the waste sludge sedimentation outlet 5 opened at the center of the lower end surface of the filter barrel 1, so that the sludge, metal waste and other sediments in the industrial wastewater are separated and settled and discharged from the filter barrel 1. The upper clean water is discharged from the filter barrel 1 through the clean water outlet, the clean water pipe 18 and the clean water pump 19. The filter net 6 is provided to prevent the upper scum from entering the clean water outlet. The provision of the stirring rod 7 and the stirring blade 8 helps to mix the industrial wastewater and gas in the filter barrel 1 evenly. The provision of the false bottom plate 9 prevents the stirring blade 8 from disturbing the sediment at the bottom of the filter barrel 1. The driving mechanism is composed of a circulation pipe 10, a circulation pump 11, a spray pipe 12 and a nozzle 13, so that the nozzle 13 sprays to the stirring blade 8, drives the stirring rod 7 to rotate for stirring, saves energy and aerates evenly. The straight aeration pipe 14 above the false bottom plate 9 can not only provide aeration, but also prevent sediment from accumulating on the false bottom plate 9 .

[0035] Embodiment 2:

[0036] like Figure 5 As shown, in this embodiment, an upper slag outlet is provided at the lower part of the barrel upper part 101 , and the upper slag outlet is connected to a slag discharge pipe 20 , so as to facilitate the discharge of slag accumulated on the inclined surface of the barrel upper part 101 .

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An industrial wastewater filtration device, characterized in that: include: Filter barrel (1); A wastewater inlet (2) is arranged at the top of the filter barrel (1); An annular aeration pipe (3) is arranged in the lower middle part of the filter barrel (1) and is fixed on the inner wall of the filter barrel (1); The arc-shaped bottom support (4) is an annular structure with high edges and low inner sides and a hollow middle part, and is arranged at the bottom of the filter barrel (1). The outer side of the top of the arc-shaped bottom support (4) is connected to the inner wall of the filter barrel (1), and the lower surface of the arc-shaped bottom support (4) is connected to the upper surface of the inner bottom plate of the filter barrel (1); A waste mud sedimentation outlet (5) is arranged at the bottom of the filter barrel (1); The clean water outlet is arranged in the upper middle part of the filter barrel (1).

2. The industrial wastewater filtration device according to claim 1, characterized in that: A filter screen (6) is arranged inside the filter barrel (1), and the filter screen (6) surrounds one end of the clean water outlet that is connected to the filter barrel (1).

3. The industrial wastewater filtration device according to claim 2, characterized in that: A stirring rod (7) is vertically arranged in the filter barrel (1), the top of the stirring rod (7) is rotatably connected to the filter barrel (1), a stirring blade (8) is arranged on the stirring rod (7), and a driving mechanism for driving the stirring rod (7) to rotate is arranged on the filter barrel (1); A false bottom plate (9) is arranged above the hollowed-out middle portion of the arc-shaped supporting bottom (4), and the false bottom plate (9) is located below the lower end of the stirring rod (7).

4. The industrial wastewater filtration device according to claim 3, characterized in that: The driving mechanism comprises a circulation pipe (10), a circulation pump (11), a spray pipe (12) and a spray head (13); the circulation pipe (10) is arranged outside the filter barrel (1) and one end of the circulation pipe is connected to the upper position of the annular aeration pipe (3), and the other end extends to the top of the filter barrel (1); the circulation pump (11) is arranged on the circulation pipe (10); the spray pipe (12) is arranged at the top of the circulation pipe (10) and extends into the filter barrel (1); the spray head (13) is installed at one end of the spray pipe (12) away from the circulation pipe (10), and the spray head (13) sprays towards the stirring blade (8).

5. The industrial wastewater filtration device according to claim 4, characterized in that: At least two layers of stirring blades (8) are arranged axially on the stirring rod (7), the number of the stirring blades (8) on the top layer is four and they are distributed in a circular array, the top of the circulation pipe (10) is annularly sleeved on the outside of the filter barrel (1), and the four injection pipes (12) are distributed in a circular array and each corresponds to one stirring blade (8).

6. The industrial wastewater filtration device according to claim 5, characterized in that: A plurality of straight aeration pipes (14) are arranged on the false bottom plate (9), and the plurality of straight aeration pipes (14) are arranged at equal intervals.

7. The industrial wastewater filtration device according to claim 1, characterized in that: The bottom of the filter barrel (1) is provided with support legs (15), and at least three of the support legs (15) are distributed in the form of a circular array.

8. The industrial wastewater filtration device according to claim 1, characterized in that: The waste mud sedimentation outlet (5) is connected to a mud outlet pipe (16), and a mud pump (17) is arranged on the mud outlet pipe (16); the clean water outlet is connected to a clean water pipe (18), and a clean water pump (19) is arranged on the clean water pipe (18).

9. The industrial wastewater filtration device according to claim 1, characterized in that: The filter barrel (1) comprises a barrel upper part (101) and a barrel lower part (102) which are fixedly connected, the barrel upper part (101) is a conical structure, the barrel lower part (102) is a cylindrical structure, the thick end of the barrel upper part (101) and the barrel lower part (102) have the same diameter, and the clean water outlet is arranged on the upper end surface of the barrel lower part (102).

10. The industrial wastewater filtration device according to claim 9, characterized in that: An upper slag outlet is provided at the lower part of the barrel upper part (101), and the upper slag outlet is connected to a slag discharge pipe (20).

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