A cylindrical air flotation device

Abstract

This invention relates to the field of dissolved air flotation (DAF) equipment technology, and more specifically, to a cylindrical DAF device. It utilizes a microbubble generator in conjunction with an air compressor to produce bubble-infused water. The material and the bubble-infused water are then mixed in a mixer and discharged into a container via a distributor to improve dissolved air efficiency. The device employs a container with a circular thin-walled upper section and a conical thin-walled lower section, combined with a rational component layout, to reduce the equipment's footprint. It fully utilizes the internal and external spaces of the enclosure. The exterior is designed as a clear water collection tank, where scum passes through to the discharge port. The internal structure, consisting of nested annular containers, increases the scum treatment area and enhances the flow capacity of the scum and microbubble-infused water, thus making efficient use of space.

Description

TECHNICAL FIELD

[0001] The present application relates to air floatation equipment technical field, more particularly to a cylindrical air floatation equipment. BACKGROUND

[0002] The conventional large air floatation equipment has complex structure, and the internal flow causes scum accumulation, which often blocks. Generally, square structure is adopted, and the strength is low, and the support, welding seam, emptying port and the like are increased. Meanwhile, the equipment occupies large area, consumes much power, and the operation cost is high. When the suspended solid concentration of waste water is high, the pressure reduction release device is easy to be blocked, and the management is complex. SUMMARY

[0003] The present application provides a cylindrical air floatation equipment, which aims to optimize the equipment structure, reduce the occupied area, and improve the flow capacity of the liquid scum in the equipment.

[0004] The above object is achieved by the following technical scheme:

[0005] A cylindrical air floatation equipment, comprising a rack, the upper end of the rack is fixedly connected with a solid phase deposition tank, the upper end of the solid phase deposition tank is fixedly connected and communicated with a bubble tank, the solid phase deposition tank and the bubble tank form a complete container, the lower side of the bubble tank is fixedly connected and communicated with a mixer, the inner upper side of the bubble tank is fixedly connected with a support frame I, the upper end of the support frame I is fixedly connected with an outer cover, the inner end face of the outer cover is a side end face of a truncated cone, the inner wall diameter of the outer cover decreases from bottom to top, the upper end of the support frame I is fixedly connected with a plurality of annular containers with upper openings, the part of the outer cover higher than the annular containers is a scum tank, all the annular containers are coaxially arranged, the upper end of the support frame I is fixedly connected with an inner shell, and the innermost annular container is fixedly connected to the outer wall of the inner shell.

[0006] All the annular containers are distributed from the outer ring to the inner ring, and the diameters of the annular containers from the outer ring to the inner ring decrease at equal intervals.

[0007] An additional shell I is fixedly connected to the outer wall of the outer cover to form a first slide structure extending rearward and downward, the scum tank is connected and communicated with the first slide structure, the bottom of the slide structure, and a scum discharge pipe is fixedly connected and communicated with the bubble tank, an additional pipe I is fixedly connected and communicated with the bubble tank, and the additional pipe I is located at a clear water tank formed between the outer cover and the bubble tank.

[0008] The cylindrical air floatation equipment has the following beneficial effects:

[0009] The inner and outer spaces of the outer cover are fully utilized, the outer part is made into a clear water collection tank, the scum passes through the clear water tank to reach the outer discharge port, the inner part passes through the nested annular containers, the scum treatment area and the bottom length are increased, the passing capacity of the scum and the micro-bubble water is improved, and the space is reasonably utilized. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1Fig. 1 is a schematic diagram of the overall structure of a cylindrical gas floating device according to the present application;

[0011] Figure 2 Fig. 2 is another perspective view of the present application;

[0012] Figure 3 Fig. 3 is a schematic diagram of the structure of the bubble pool removal part to show the internal structure of the present application;

[0013] Figure 4 Fig. 4 is a schematic diagram of the present application after cutting from the middle;

[0014] Figure 5 Fig. 5 is a schematic diagram of the structure of the rack, solid deposition pool and evacuation pipe;

[0015] Figure 6 Fig. 6 is a schematic diagram of the structure of the micro-bubble generating assembly;

[0016] Figure 7 Fig. 7 is a schematic diagram of the structure of the water distributor;

[0017] Figure 8 Fig. 8 is a schematic diagram of the structure of the upper half of the water distributor after removal;

[0018] Figure 9 Fig. 9 is a schematic diagram of the structure of the upper half area inside the bubble pool;

[0019] Figure 10 Fig. 10 is a schematic diagram of the present application after cutting from the middle; Figure 9

[0020] Fig. 11 is another perspective view of the structure of the present application; Figure 11 Figure 9 Fig. 12 is a schematic diagram of the support rack I of the present application after removal of the lower half;

[0021] Figure 12 Figure 11 Fig. 13 is a schematic diagram of the overall structure of the present application when the top rack is the second embodiment;

[0022] Figure 13 Fig. 14 is a schematic diagram of the present application after cutting from the middle;

[0023] Figure 14 Fig. 15 is an enlarged view of A in the present application; Figure 13

[0024] ​​​In the figure: frame 11; solid phase deposition tank 12; emptying pipe 13; bubble tank 14; mixer 15; slag discharge pipe 16; external water discharge pipe 17; external pipe I 18; external pipe II 19; mixer shell 151; micro-bubble water inlet pipe 152; water distributor 153; water distribution hole 154; water pump 21; pipe I 22; micro-bubble generating assembly 23; assembly shell 231; assembly water inlet pipe 232; assembly water outlet pipe 233; micro-bubble head 234; partition 235; water passage hole 236; pipe II 24; air compressor 25; support frame I 31; cover 32; clean water pipe 321; annular container 33; water blocking plate 34; inner shell 35; external shell I 36; slag discharge shell 37; external shell II 38; plate valve 39; adjusting assembly 310; shaft 41; scraper 42; top frame 43; middle cover 43a; side cover 43b; wall 43c; external pipe III 43d; driving mechanism 44. DETAILED DESCRIPTION

[0025] A cylindrical air floatation device, with reference to Figures 1 to 5 , comprising a frame 11, a solid phase deposition tank 12 is fixedly connected to the upper end of the frame 11, an emptying pipe 13 is fixedly connected to the bottom of the solid phase deposition tank 12 and is in communication with the solid phase deposition tank 12, heavier solid phase materials are precipitated to the bottom, the heavier solid phase materials are discharged in a timely manner through the emptying pipe 13, a bubble tank 14 is fixedly connected to the upper end of the solid phase deposition tank 12 and is in communication with the solid phase deposition tank 12, and the solid phase deposition tank 12 and the bubble tank 14 form a complete container;

[0026] In the figure, the solid phase deposition tank 12 is a conical thin wall with a decreasing inner diameter from top to bottom, and the bubble tank 14 is a circular thin wall with a top-to-bottom communication.

[0027] In the figure, a first valve is installed on the emptying pipe 13, and the first valve is used to open or close the emptying pipe 13.

[0028] Further, the lower side of the bubble tank 14 is fixedly connected to and in communication with a mixer 15, and the mixer 15 is used to mix the materials and micro-bubble water and then guide the mixture into the container.

[0029] Specifically, the mixer 15 comprises a mixer shell 151 with an opening at the rear, and the opening of the mixer shell 151 is used for the materials to enter the mixer shell 151.

[0030] The mixer 15 further comprises a micro-bubble water inlet pipe 152 fixedly connected to and in communication with the mixer shell 151, the micro-bubble water inlet pipe 152 is L-shaped, the forwardly extending part of the micro-bubble water inlet pipe 152 is located in the mixer shell 151, and the forwardly extending part of the micro-bubble water inlet pipe 152 is coaxially arranged with the mixer shell 151, and the forwardly extending part of the micro-bubble water inlet pipe 152 is uniformly provided with holes, the holes enable the micro-bubble water inlet pipe 152 to continuously guide micro-bubble water into the materials flowing into the mixer shell 151, and then mix the micro-bubble water and the materials.

[0031] The mixer 15 also includes a water distributor 153 fixedly connected to and connected to the mixer housing 151. The water distributor 153 is a ring-shaped pipe with two open ends. The two open ends of the water distributor 153 are fixedly connected to and connected to the left and right ends of the mixer housing 151, respectively. The water distributor 153 is located in the bubble tank 14. The water distributor 153 is provided with a water distribution hole 154, so that the microbubble water and the material are mixed and enter the container. The microbubbles and the scum are mutually adsorbed and stuck together, and the scum rises under the action of buoyancy.

[0032] The two open ends of the water distributor 153 are spaced from the front end of the inside of the mixer housing 151. This space allows the material to flow forward to the front end of the inside of the mixer housing 151 after mixing with the microbubble water, and then flow back to achieve remixing, so as to enter the water distributor 153.

[0033] Among them, the water distribution holes 154 are provided in two rings at the bottom of the mixer shell 151. The water distribution holes 154 of the inner and outer rings are in an inverted V shape below the intersection of their axes. The two rings of water distribution holes 154 are at different angles to the center line of the bubble tank 14, so that the microbubble water is evenly distributed into the material.

[0034] To further explain, a water pump 21 is fixedly connected to the frame 11, and one end of a pipe I 22 is fixedly connected to and connected to the water pump 21. A microbubble generating component 23 is fixedly connected to and connected to the other end of the pipe I 22. Preferably, a valve for opening or closing itself is installed on the pipe I 22.

[0035] Among them, combined Figure 6 The microbubble generating component 23 includes a component housing 231. A component water inlet pipe 232 is fixedly connected to and connected to the upper front side of the component housing 231. The rear part of the component water inlet pipe 232 is located at the rear side of the center of the component housing 231. A component water outlet pipe 233 is fixedly connected to and connected to the lower rear side of the component housing 231. The front part of the component water outlet pipe 233 is located at the front side of the center of the component housing 231. A microbubble head 234 is fixedly connected to each of the front and rear ends of the component housing 231. The microbubble head 234 includes a base part and a head. The base part is located outside the component housing 231, and the head is located inside the component housing 231. Figure 6 The head of the microbubble head 234 located at the front is not shown. An air compressor 25 is fixedly connected to the frame 11. The air compressor 25 is fixedly connected to and connected to the two microbubble heads 234. The air compressor 25 can be fixedly connected to and connected to the microbubble head 234 through an air pipe. The air pipe is not shown in the figure. The rear end of the component water outlet pipe 233 is fixedly connected to and connected to one end of pipe II 24. The other end of pipe II 24 is fixedly connected to and connected to the microbubble water inlet pipe 152.

[0036] The water pump 21 draws water from an external pool to the micro-bubble generating assembly 23, the assembly water inlet pipe 232 leads water to the micro-bubble head 234 located at the rear side, the air compressor 25 compresses air which is injected into the assembly shell 231 through the air pipe and the micro-bubble head 234, so that the micro-bubbles emitted by the micro-bubble head 234 located at the rear side directly collide with the water led by the assembly water inlet pipe 232, realizing the first micro-bubble injection and mixing with water, the micro-bubble head 234 located at the front side is in front of the assembly water outlet pipe 233, then the micro-bubble water enters the assembly water outlet pipe 233, the micro-bubble head 234 located at the front side injects micro-bubbles into the micro-bubble water again, realizing the second micro-bubble injection, achieving the mixing of micro-bubbles and micro-bubble water, finally the micro-bubble water passes through the pipe II 24 and the micro-bubble water inlet pipe 152 in turn, and enters the mixer shell 151;

[0037] The middle part of the assembly shell 231 is fixed with a partition plate 235, the assembly shell 231 and the assembly water outlet pipe 233 pass through the partition plate 235, the partition plate 235 makes the assembly shell 231 form two chambers in front and back, and the partition plate 235 is provided with a water passing hole 236 to make the two chambers communicate. After the micro-bubbles are mixed with the cleaning water, they are depressurized twice, as shown in Figure 6 The left side of the middle partition plate 235 is the first low-pressure area, and the right side is the second low-pressure area. The cleaning water from the assembly water inlet pipe 232 is depressurized in the first low-pressure area, which is beneficial to fully mix with the micro-bubbles generated by the micro-bubble head 234; when the bubble water passes through the partition plate 235, the cross-sectional area of the flow changes, and the bubble water is compressed again, the flow sequence is changed, and the mixing effect is achieved; when the bubble water reaches the right side chamber, the space becomes larger, and the flow sequence of the water is changed again, and after mixing again, the water is pressurized and discharged to the assembly water outlet pipe 233. The two depressurizations and two pressurizations form the micro-bubble water; the gas dissolution efficiency is improved, and thus the overall volume of the micro-bubble generating assembly 23 is reduced.

[0038] Further description is made in combination with Figures 9 to 12A support frame I 31 is fixedly connected to the upper side of the inner side of the bubble tank 14. An outer cover 32 is fixedly connected to the upper end of the support frame I 31. The inner end face of the outer cover 32 is the side end face of a frustum. The inner wall diameter of the outer cover 32 increases from bottom to top. Multiple annular containers 33 with upper openings are fixedly connected to the upper end of the support frame I 31. The part of the outer cover 32 that is higher than the annular containers 33 is a scum tank. All annular containers 33 are arranged coaxially, and adjacent annular containers 33 are nested, which increases the scum treatment area and the bottom side length. If all annular containers 33 are distributed from the outer ring to the inner ring, the diameter of the annular containers 33 decreases at equal intervals from the outside to the inside. Each annular container 3... 3 includes an outer arc wall, an inner arc wall, and a bottom wall. The outer arc wall and the inner arc wall are respectively fixed to the outer and inner circumferences of the bottom wall. In an annular container 33, the height of the outer arc wall is lower than that of the inner arc wall, and the sides of the outer arc wall and the inner arc wall are the sides of a frustum. The diameters of the outer arc wall and the inner arc wall decrease at equal intervals from bottom to top. The upper end of the support frame I 31 is fixed to the inner shell 35. The innermost annular container 33 is fixed to the outer wall of the inner shell 35. The innermost annular container 33 can omit the inner arc wall. The taper angle of the outer arc wall and the inner arc wall is 65°-70° so that the scum can be firmly attached to the inner wall of the annular container 33 and rise upward along the annular container 33 to the scum pool.

[0039] Among them, a water-blocking plate 34 is fixedly connected to the lower side of the annular container 33. The water-blocking plate 34 has holes evenly distributed on it, so that the clear water sinks steadily and at the same time, the clear water passes downward and enters the lower cavity.

[0040] For specific references Figure 12 After removing the lower half of support frame I31, it is revealed that support frame I31 has a cross-shaped pipe structure and is connected to the bottom of the annular container 33. An external pipe II19 is fixedly connected to and connected to the bubble tank 14. External pipe II19 is the external discharge port during cleaning. It is connected to support frame I31, and a valve can be installed on external pipe II19. When external pipe II19 is opened, the efficiency of clear water discharge can be improved.

[0041] To further explain, an outer shell I 36 is fixed to the outer wall of the outer cover 32 to form the first slide structure extending backward and downward. The scum pool is connected to the slide structure. At the bottom of the slide structure, and on the bubble pool 14, a scum discharge pipe 16 is fixed and connected. The outer shell I 36 is used to guide the scum, so that the scum is discharged through the scum discharge pipe 16.

[0042] Among them, a water pipe 321 is fixedly connected to and connected to the outer cover 32. The water pipe 321 is located outside the slide structure. The bottom of the water pipe 321 is connected to the cross pipe structure, so the water is discharged into the space enclosed by the water pool, i.e. the bubble pool 14 and the outer cover 32.

[0043] To further explain, an outer shell II 38 is fixedly attached to the outer wall of the outer cover 32 to form a second slide structure extending forward and downward. The scum pool is closed to the second slide structure. A plate valve 39 is slidably connected to the front side of the outer shell II 38 by means of insertion, which, together with the second slide structure, forms a closed structure. Adjusting the height of the plate valve 39 can adjust the liquid level of the scum pool and control the water content of the scum. At the bottom of the second slide structure, and fixedly connected to the bubble pool 14, an external drain pipe 17 is connected and connected to it. The external drain pipe 17 is used to discharge clean water.

[0044] The height of the plate valve 39 is adjusted by the adjustment component 310. The adjustment component 310 includes a handwheel, a screw is fixedly connected to the lower end of the handwheel, and a base is connected to the lower part of the screw through a threaded connection. The base is fixedly connected to the plate valve 39. A top frame 43 is fixedly connected to the top of the bubble tank 14. The upper side of the screw is rotatably connected to the top frame 43. The height of the connecting seat is adjusted by rotating the screw, thereby driving the plate valve 39 to rise and fall.

[0045] Among them, the upper end of the outer cover 32 is fixedly connected to the slag discharge shell 37, the slag discharge shell 37 is connected to the first slide structure to form the third slide structure with a reduced slope. The part of the slag discharge shell 37 extending into the slag pool is inclined downward so that the slag can be moved to the slag discharge shell 37 by the liquid flow, and then guided to the first slide structure through the slag discharge shell 37.

[0046] An external pipe I18 is fixedly connected to and connected to the bubble tank 14. The external pipe I18 is located between the outer cover 32 and the bubble tank 14 to form a clear water tank. One end of the external pipe I18 is connected to one end of the pipe III26. A valve for opening or closing itself is installed on the pipe III26. The other end of the pipe III26 is fixedly connected to and connected to the water pump 21. The water pump 21 supplies water to inject or pump water into the clear water tank. Injecting water is used to clean and maintain the clear water tank, and pumping water is used to accelerate the discharge of clear water.

[0047] The upper end of the inner shell 35 is rotatably connected to a shaft 41, and the upper end of the top frame 43 is fixedly connected to a drive mechanism 44. The drive mechanism 44 can be a geared motor, which drives the shaft 41 to rotate using the output shaft of the geared motor. The method is not limited to the direct fixed connection between the output shaft of the geared motor and the shaft 41. A scraper 42 is fixedly connected to the shaft 41. With the center of the scum pool as the rotating axis, it continuously scrapes scum in the scum pool. The scraper 42 can scrape the scum and the scum on the inner wall of the scum pool into the scum discharge shell 37, thereby accelerating the discharge of scum.

[0048] One embodiment of the top frame 43 is as follows:

[0049] The top frame 43 is a T-shaped steel frame with a flat upper surface and a U-shaped bottom with an opening at the bottom.

[0050] When harmful gases are present during slag removal operations, refer to... Figure 13 and14 The top frame 43 adopts the second embodiment:

[0051] The top frame 43 includes a middle cover 43a fixed to the upper end of the bubble tank 14, and two side covers 43b hinged to the left and right ends of the middle cover 43a respectively. The two side covers 43b and the middle cover 43a form a complete cover covering the bubble tank 14. A wall 43c is fixed to each of the left and right sides of the upper end of the middle cover 43a, so that the side covers 43b can rotate relative to the hinge axis to which they are connected. Thus, after the bubble tank 14 is opened, the side covers 43b can lean against the wall 43c, which meets the needs of observation and maintenance of the bubble tank.

[0052] Furthermore, an external pipe Ⅲ 43d is fixedly connected and connected to the middle cover 43a. The external pipe Ⅲ 43d is used to collect harmful gases, thereby introducing the harmful gases into the VOC treatment equipment for treatment.

Claims

1. A cylindrical air float device comprising a frame (11), characterized in that, The upper end of the frame (11) is fixedly connected with a solid-phase deposition tank (12), the upper end of the solid-phase deposition tank (12) is fixedly connected and communicated with a bubble tank (14), the solid-phase deposition tank (12) and the bubble tank (14) form a complete container, the lower side of the bubble tank (14) is fixedly connected and communicated with a mixer (15), the inner upper side of the bubble tank (14) is fixedly connected with a support frame I (31), the upper end of the support frame I (31) is fixedly connected with an outer cover (32), the inner end face of the outer cover (32) is a side end face of a truncated cone, the inner wall diameter of the outer cover (32) decreases from bottom to top, the upper end of the support frame I (31) is fixedly connected with a plurality of annular containers (33) with upper openings, the part of the outer cover (32) higher than the annular containers (33) is a dross tank, all the annular containers (33) are coaxially arranged, the upper end of the support frame I (31) is fixedly connected with an inner shell (35), the innermost annular container (33) is fixedly connected to the outer wall of the inner shell (35); All the annular containers (33) are distributed from the outer circle to the inner circle, and the diameters of the annular containers (33) from the outer to the inner decrease at equal intervals; The outer wall of the outer cover (32) is fixedly connected with an additional shell I (36) to form a first slide structure extending rearward and downward, the dross tank is connected with the first slide structure, at the bottom of the slide structure, and a dross discharge pipe (16) is fixedly connected and communicated with the bubble tank (14), an additional pipe I (18) is fixedly connected and communicated with the bubble tank (14), and the additional pipe I (18) is located at a clear water tank formed between the outer cover (32) and the bubble tank (14); Each annular container (33) comprises an outer arc wall, an inner arc wall and a bottom wall, the outer arc wall and the inner arc wall are fixedly connected to the outer periphery and the inner periphery of the bottom wall respectively, the height of the outer arc wall in one annular container (33) is lower than that of the inner arc wall, and the side faces of the outer arc wall and the inner arc wall are side faces of a truncated cone, and the diameters of the outer arc wall and the inner arc wall decrease at equal intervals from bottom to top.

2. The cylindrical air flotation equipment according to claim 1, wherein the solid-phase deposition tank (12) is a tapered thin wall with an increasing inner diameter from bottom to top, and the bubble tank (14) is a circular thin wall with a top-down communication.

3. The cylindrical air flotation equipment according to claim 1, wherein the bottom of the solid-phase deposition tank (12) is fixedly connected and communicated with a discharge pipe (13).

4. The cylindrical air flotation equipment according to claim 1, wherein a water pump (21) is fixedly connected to the frame (11), one end of a pipe I (22) is fixedly connected and communicated with the water pump (21), the other end of the pipe I (22) is fixedly connected and communicated with a micro-bubble generating assembly (23), an air compressor (25) is fixedly connected to the frame (11), and the air compressor (25) is communicated with the micro-bubble generating assembly (23).

5. The cylindrical air flotation equipment according to claim 1, wherein the vertical angle of the outer arc wall and the inner arc wall is 65°-70°.

6. The cylindrical air flotation equipment according to claim 1, wherein a water blocking plate (34) is fixedly connected to the lower side in the annular container (33), and the water blocking plate (34) is uniformly provided with holes.

7. The cylindrical air floatation device according to claim 1, wherein the support frame I (31) is in the form of a pipe structure, and the support frame I (31) is in communication with the bottom of the ring-shaped container (33), and the bubble pool (14) is fixedly connected with an additional pipe II (19) in communication, and the additional pipe II (19) is in communication with the support frame I (31).

8. The cylindrical air floatation device according to claim 1, wherein the upper end of the outer cover (32) is fixedly connected with a slag discharge shell (37), the slag discharge shell (37) is connected with the top of the first slide structure, and the part of the slag discharge shell (37) extending into the float slag pool and the part of the slag discharge shell (37) extending into the first slide structure are both inclined downward.

9. The cylindrical air floatation device according to claim 8, wherein the upper end of the inner shell (35) is rotatably connected with a shaft (41), the upper end of the top frame (43) is fixedly connected with a driving mechanism (44) for driving the shaft (41) to rotate, the shaft (41) is fixedly connected with a scraper (42), the scraper (42) can scrape the float slag in the float slag pool with the center of the float slag pool as the rotation shaft, and the scraper (42) can scrape the float slag into the slag discharge shell (37).

10. The cylindrical air floatation device according to claim 1, wherein the outer wall of the outer cover (32) is fixedly connected with an additional shell II (38) to form a second slide structure extending forward and downward, the float slag pool is closed with the second slide structure, the second slide structure is slidably connected with a plate valve (39), the plate valve (39) forms a closed structure with the second slide structure, adjusting the height of the plate valve (39) can open the closed structure, and the bottom of the second slide structure is fixedly connected with a water outlet pipe (17) in communication with the bubble pool (14).

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