Dissolved air flotation device for sewage treatment

Abstract

The utility model discloses a dissolved air flotation device for sewage treatment, and relates to the technical field of sewage treatment. The device comprises a treatment box, a water inlet joint is fixed on the rear side of the treatment box in a penetrating manner, the treatment box below the water inlet joint is fixedly connected with a pressure dissolved air tank through an air pipe, an L-shaped partition plate is fixedly arranged in the treatment box, and a partition plate is fixedly arranged in the treatment box on one side, far away from the water inlet joint, of the L-shaped partition plate. According to the sewage treatment device disclosed by the utility model, floccules and impurities in the treatment box float, are discharged into the treatment box on the front side of the L-shaped partition plate from the sewage overflowing window in an overflowing manner, and are filtered through the filter plate, so that the floccules and the impurities in sewage can be separated more quickly; the two dirt overflowing windows are alternately sealed through the plugging plate, floccules and impurities accumulated in the two impurity discharging hoppers can be alternately cleaned out, shutdown cleaning is not needed, continuous sewage treatment can be achieved, and the sewage treatment efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sewage treatment technical field, especially, relate to a kind of dissolved air floatation device for sewage treatment. BACKGROUND

[0002] Dissolved air floatation is, air sent to air tank by air compressor is brought into dissolved air tank by jet device, is forced to dissolve in water under 0.35Mpa pressure, forms dissolved air water, is sent to air floatation groove, under the condition of sudden release, air dissolved in water is precipitated, forms a large number of micro-bubble groups, and the suspended solids in the sewage that is flocculated after dosing and pumping contact fully, and adsorbed in flocculated suspended solids in slow rising process.

[0003] But in the process of actual use, applicant finds that, in the process of being driven by chain conveyer belt to the flocculation and impurities salvaging of bucket and toothed plate, the driven bucket and toothed plate will cause great disturbance to the water surface of the sewage in the treatment tank, so that part of the flocculation and impurities will enter the sewage again, so as to reduce the treatment efficiency of the device to the sewage, so that the treatment of the flocculation and impurities floating up is not efficient enough, in view of this, we propose a dissolved air floatation device for sewage treatment. UTILITY MODEL CONTENT

[0004] To solve the above technical problems, the utility model is realized by the following technical solutions:

[0005] The utility model discloses a dissolved air floatation device for sewage treatment, including the treatment box, the rear side of treatment box is fixed with the water inlet joint through the penetration, the treatment box below water inlet joint is fixedly connected with pressure dissolved air tank through the air pipe, the inside fixed setting of treatment box has the L shaped baffle, the treatment box in the fixed setting of L shaped baffle far from water inlet joint one side has the partition, the upper portion of L shaped baffle's both sides of partition is opened the overflow window in the symmetry, the upper of treatment box before overflow window is rotatably connected with screw rod through the bearing, the upper of treatment box on the both sides of screw rod is connected with the guide rod of active penetration in the symmetry, the front end of two guide rods is fixedly connected through the connecting frame, the middle part of screw rod is screwed through the connecting frame, the rear end of two guide rods extends to the inside of treatment box and is fixedly connected through the plugging board, the filter board is clamped in the treatment box below plugging board, the treatment box on the fixed setting of filter board front side has the miscellaneous chute, the front side of treatment box below miscellaneous chute is fixed with the first water outlet through the penetration, the front side of treatment box below the first water outlet is fixed with the second water outlet through the penetration.

[0006] Preferably, the rear wall of the plugging board is fixedly connected with a sealing ring for sealing the joint of the plugging board and the L-shaped baffle.

[0007] Preferably, the front end of the screw rod is sleeved with an adjusting disc.

[0008] Preferably, the top of the filter board is flush with the bottom of the inside of the miscellaneous chute.

[0009] Preferably, the bottom of the partition is higher than the bottom of the inside of the L-shaped baffle.

[0010] Preferably, the first water outlet is flush with the bottom of the inside of the L-shaped baffle, and the second water outlet is flush with the bottom of the inside of the treatment box.

[0011] The utility model has the following beneficial effects:

[0012] The dissolved air floatation device for sewage treatment can make the flocculent and impurities in the treatment box float up, discharge into the treatment box in front of the L-shaped baffle through the overflow window, and filter the flocculent and impurities through the filter board, so that the flocculent and impurities in the sewage can be separated more quickly. The two overflow windows can be closed alternately through the plugging board, the flocculent and impurities accumulated in the two miscellaneous chutes can be cleaned alternately, without stopping for cleaning, so that the sewage can be treated continuously, and the treatment efficiency of the sewage is improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description, obviously, the drawings described in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0014] Figure 1 It is an external structure schematic view of the dissolved air flotation device for sewage treatment of the present application.

[0015] Figure 2 It is an internal structure schematic view of the dissolved air flotation device for sewage treatment of the present application.

[0016] Figure 3 It is the dissolved air flotation device for sewage treatment of the present application Figure 1 It is an enlarged view of structure A.

[0017] In the drawings, the component list represented by each number is as follows:

[0018] 1, treatment box; 11, water inlet joint; 12, air pipe; 13, impurity discharge hopper; 14, first water outlet joint; 15, second water outlet joint; 16, L-shaped partition plate; 161, overflow window; 17, partition plate; 2, pressure dissolved air tank; 3, plugging plate; 4, guide rod; 5, filter plate; 6, screw rod; 61, adjusting disc; 7, connecting frame. DETAILED DESCRIPTION

[0019] The technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application, obviously, the described embodiments are only some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0020] Please refer to Figures 1-3 The present application provides a technical scheme:

[0021] The utility model provides a kind of dissolved air flotation device for sewage treatment, including processing box 1, water inlet joint 11 is fixed through the rear side of processing box 1, and the processing box 1 below water inlet joint 11 is fixedly connected with pressure dissolved air tank 2 by gas pipe 12, L-shaped baffle 16 is fixedly arranged in the inside of processing box 1, and the processing box 1 of L-shaped baffle 16 side away from water inlet joint 11 is fixedly arranged with partition plate 17, the bottom of partition plate 17 is higher than the inside of L-shaped baffle 16, and the upper portion of L-shaped baffle 16 on the both sides of partition plate 17 is symmetrically provided with overflow window 161, and overflow window 161 is rotatably connected with screw rod 6 on the front side of processing box 1 by bearing, and the front end of screw rod 6 is sleeved and fixed adjusting disc 61, and the processing box 1 on the both sides of screw rod 6 is symmetrically movably penetrated and connected with guide rod 4, and the front end of two guide rods 4 is fixedly connected by connecting frame 7, and screw rod 6 is screwed and penetrated the middle part of connecting frame 7, and the rear end of two guide rods 4 extends to the inside of processing box 1 and is fixedly connected by blocking plate 3, and the rear wall of blocking plate 3 is fixedly connected with sealing ring for sealing the place where blocking plate 3 and L-shaped baffle 16 are attached, by making flocculation and impurities in the inside of processing box 1 float up, and from overflow window 161 place using overflow mode and be discharged into the processing box 1 of L-shaped baffle 16 front side, and by filter plate 5, flocculation and impurities are filtered, can more quickly separate flocculation and impurities in sewage, and by blocking plate 3, two overflow windows 161 are alternately closed, can alternately clean out the flocculation and impurities accumulated in the inside of two impurity discharge hoppers 13, without stopping cleaning, can realize the continuous treatment of sewage, improve the processing efficiency of sewage, and filter plate 5 is clamped in the processing box 1 below blocking plate 3, impurity discharge hopper 13 is fixedly arranged on the front side of processing box 1 of filter plate 5, and the top of filter plate 5 is flush with the bottom of the inside of impurity discharge hopper 13, and first water outlet 14 is fixedly penetrated on the front side of processing box 1 below impurity discharge hopper 13, and first water outlet 14 is flush with the bottom of the inside of L-shaped baffle 16, and second water outlet 15 is fixedly penetrated on the front side of processing box 1 below first water outlet 14, and second water outlet 15 is flush with the bottom of the inside of processing box 1.

[0022] Working principle: when in use, the water inlet joint 11 can be connected to the water inlet pipe of sewage, the first water outlet joint 14 and the second water outlet joint 15 can be connected to the external pipeline, the pressure dissolved gas tank 2 can inject dissolved gas into the treatment tank 1 through the air pipe 12, the dissolved gas can make the flocculation and impurities formed in the sewage float up, as the liquid level of the sewage in the treatment tank 1 rises, the flocculation and impurities floating on the liquid level can automatically overflow from the overflow window 161 to the treatment tank 1 in front of the L-shaped partition plate 16, then the flocculation and impurities can be filtered through the filter plate 5, the filtered sewage can be discharged through the first water outlet joint 14, after a period of time, the left adjusting disc 61 can be manually rotated clockwise to drive the screw rod 6 to rotate, the rotation of the screw rod 6 can drive the connecting frame 7 to move backward together with the guide rod 4, and the left sealing plate 3 is moved backward through the guide rod 4, the left overflow window 161 can be sealed by the left sealing plate 3, at this time, the flocculation and impurities accumulated in the left impurity discharge hopper 13 can be cleaned, after cleaning, the left adjusting disc 61 is counterclockwise to drive the left sealing plate 3 to move forward, the left overflow window 161 is reopened, at this time, the above steps can be repeated to seal the right overflow window 161 by the right sealing plate 3, the flocculation and impurities accumulated in the right impurity discharge hopper 13 can be cleaned, without stopping the machine to clean the flocculation and impurities, after a period of time, the sewage in the treatment tank 1 can be discharged through the second water outlet joint 15.

[0023] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0024] The above is only the preferred embodiment of the present application, and does not limit the present application, any modification to the technical solutions described in the above embodiments, and equivalent replacement of part of the technical features, all belong to the protection scope of the present application.

Claims

1. A dissolved air flotation device for sewage treatment, comprising a treatment tank (1), characterized in that: The rear side of the processing box (1) is fixed with a water inlet joint (11), the processing box (1) below the water inlet joint (11) is fixedly connected with a pressure dissolved gas tank (2) through an air pipe (12), the inside of the processing box (1) is fixedly provided with an L-shaped partition plate (16), the processing box (1) away from the water inlet joint (11) side of the L-shaped partition plate (16) is fixedly provided with a partition plate (17), the upper part of the L-shaped partition plate (16) on both sides of the partition plate (17) is symmetrically provided with a sewage overflow window (161), the processing box (1) in front of the sewage overflow window (161) is rotatably connected with a screw rod (6) through a bearing, the processing box (1) on both sides of the screw rod (6) is symmetrically movably connected with a guide rod (4), the front ends of the two guide rods (4) are fixedly connected through a connecting frame (7), the screw rod (6) is threadedly connected with the middle part of the connecting frame (7), the rear ends of the two guide rods (4) extend into the inside of the processing box (1) and are fixedly connected through a blocking plate (3), the processing box (1) below the blocking plate (3) is clamped with a filter plate (5), the processing box (1) in front of the filter plate (5) is fixedly provided with a miscellaneous material discharge hopper (13), the front side of the processing box (1) below the miscellaneous material discharge hopper (13) is fixedly connected with a first water outlet joint (14), the front side of the processing box (1) below the first water outlet joint (14) is fixedly connected with a second water outlet joint (15).

2. The dissolved air flotation device for sewage treatment according to claim 1, characterized in that, The rear wall of the blocking plate (3) is fixedly connected with a sealing ring for sealing the abutting place of the blocking plate (3) and the L-shaped partition plate (16).

3. The dissolved air flotation device for sewage treatment according to claim 1, characterized in that, The front end of the screw rod (6) is sleeved with an adjusting disc (61).

4. The dissolved air flotation device for sewage treatment according to claim 1, characterized in that, The top of the filter plate (5) is flush with the bottom of the miscellaneous material discharge hopper (13) inside.

5. The dissolved air flotation device for sewage treatment according to claim 1, characterized in that, The bottom of the partition plate (17) is higher than the bottom of the L-shaped partition plate (16) inside.

6. The dissolved air flotation device for sewage treatment according to claim 1, characterized in that, The first water outlet joint (14) is flush with the bottom of the L-shaped partition plate (16) inside, and the second water outlet joint (15) is flush with the bottom of the processing box (1) inside. The first water outlet joint (14) is flush with the bottom of the L-shaped partition plate (16) inside, and the second water outlet joint (15) is flush with the bottom of the processing box (1) inside.

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