Automatic low-energy-consumption rotational flow dissolved air flotation device

Abstract

The utility model relates to the technical field of air flotation devices, in particular to an automatic low-energy-consumption rotational flow dissolved air flotation device which comprises a treatment tank and an equipment tank which are connected up and down, a cavity rotationally arranged at the bottom in the treatment tank, and a stirring rod fixedly arranged on the cavity, the rotating motor is arranged in the equipment tank, the output end of the rotating motor is fixedly connected with the stirring rod, the air dissolving pipe is arranged on the cavity and communicates with the interior of the cavity, and the air compressor is arranged at the bottom of the equipment tank and used for supplying air to the cavity. A gas dissolving pipe and a stirring rod are controlled to rotate through a rotating motor, sewage and bubbles are fully mixed, a connecting disc at the top of the stirring rod is rotationally connected with the inner top of a treatment tank through a connecting rod, the stirring stability is guaranteed, floaters under vortex move towards the center, and foam with impurities is discharged through a sewage discharging pipe in the center; the automatic gas dissolving and pollution discharge treatment effect is improved; and only one power source is used for driving, so that the operation energy consumption of the air flotation device is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to air floatation device technical field, concretely relates to a kind of automatic low-energy consumption cyclone dissolved air floatation device. BACKGROUND

[0002] With the development of industry and population growth, the discharge of various types of wastewater is increasing. Many industrial wastewater and domestic sewage contain a large amount of suspended solids, oil, and colloidal pollutants. If these pollutants are directly discharged, they will cause serious pollution to the water environment, affect the survival of aquatic organisms, and destroy the ecological balance. Traditional sedimentation method has poor effect in treating some fine suspended solids and colloids. For example, in dyeing wastewater, the colloidal particles formed by dye molecules are very small, and their gravity settling velocity is extremely slow, so it is difficult to remove them by simple sedimentation method. Moreover, for some oil-containing wastewater, oil droplets form an emulsified state with water, which is difficult to remove by simple physical separation method.

[0003] Air flotation technology is based on the adhesion characteristics of micro-bubbles and pollutants in water, which makes the pollutants float to the water surface to achieve separation. Compared with sedimentation method, air flotation method has obvious advantages in treating micro-particles and low-density pollutants. The bubbles can provide upward buoyancy, which can quickly bring these difficult-to-settle pollutants to the water surface.

[0004] However, the traditional air floatation device has some problems, such as low degree of automation, which requires frequent manual operation, not only increasing labor cost, but also affecting the air floatation effect due to the timeliness and accuracy of operation. SUMMARY

[0005] To solve the above technical problems, the utility model provides an automatic low-energy consumption cyclone dissolved air floatation device.

[0006] The technical scheme of the utility model is an automatic low-energy consumption cyclone dissolved air floatation device: including a treatment tank and a device tank connected in up and down, a cavity rotatingly arranged at the bottom of the treatment tank, a stirring rod fixedly arranged on the cavity, a rotating motor arranged inside the device tank and fixedly connected with the stirring rod at the output end, a dissolved air pipe arranged on the cavity and communicating with the inside of the cavity, and an air compressor arranged at the bottom of the device tank and used for supplying air to the cavity; the top of the stirring rod is provided with a connecting disc with a groove, and the connecting disc is rotationally connected with the top of the treatment tank through a connecting rod; a first pipe and a second pipe are arranged on the side wall of the treatment tank below the connecting disc, the first pipe and the second pipe are communicated, and a water outlet pipe and a circulating pump are arranged on the second pipe; the stirring rod has a pipeline inside, and the stirring rod penetrates through the bottom of the treatment tank and is rotationally and sealingly connected with an annular liquid guide cavity arranged in the device tank; a plurality of air outlets are arranged on the dissolved air pipe, and a one-way valve is arranged at the air outlet.

[0007] Description: The one-way valve at the gas outlet ensures that gas can only enter the cavity from the gas dissolving pipe; the circulation pump on the backflow pipe ensures the correct direction of backflow.

[0008] Further, the stirring rod side wall and the inner ring surface of the annular liquid guide cavity are both provided with grooves for docking, and the annular liquid guide cavity is provided with a blowdown pipe communicating with the outside; the treatment tank bottom has a cavity, the air compressor is connected with the cavity through a conduit, the cavity is connected with the bottom of the treatment tank in a rotating sealing manner, and the top of the cavity and the bottom of the cavity are both provided with through holes for docking.

[0009] Description: The grooves and the annular liquid guide cavity can discharge the foam impurities in the blowdown pipe to the blowdown port, and the conduit and the cavity can send the gas into the cavity through the through holes, thereby achieving gas supply to the gas dissolving pipe.

[0010] Further, a plurality of mounting pipes are longitudinally and rotationally arranged on the gas dissolving pipe, a blade and a gear are sequentially arranged on each mounting pipe, and a gear ring is correspondingly arranged on the inner wall of the treatment tank.

[0011] Description: The meshing connection of the gear ring and the gear realizes the rotation of multiple groups of blades, further enhances the gas dissolving effect, realizes secondary stirring by using the power of the rotating motor, improves the gas dissolving efficiency, and saves energy consumption.

[0012] Further, the gear number ratio of each group of gear and gear ring is different.

[0013] Description: Different gear number ratios make the rotation speeds of multiple groups of gears different, which affects the further stirring of water flow near the gas dissolving pipe and enhances the gas dissolving effect.

[0014] Further, the gear is provided with a through hole, and the treatment tank is provided with a cleaning valve.

[0015] Description: The through hole reduces the water flow resistance and prolongs the service life, and the cleaning valve can be cleaned in time to avoid the occurrence of sludge dead angle in the treatment tank.

[0016] Further, the connecting disc is provided with a floating plate on the outside.

[0017] Description: The floating plate guides the foam to flow to the center, thereby improving the blowdown efficiency.

[0018] The utility model discloses an advantageous effect is: the utility model discloses a rotating motor control dissolves the gas pipe and the stirring rod rotation, makes sewage and bubble fully mix, and the connecting disc of stirring rod top is rotated and connected with the inside top of processing jar through connecting rod, has guaranteed the stability of stirring, in the stirring process, the gas forms small bubble in liquid, and because the rotation of cavity forms the cyclone, makes gas -liquid fully mix under the cyclone state, and this cyclone state helps bubble evenly dispersed in liquid, increases the contact opportunity of bubble and the pollutant in water, and the floating object moves to the center under the vortex, and the foam of impurity is discharged through the blowdown pipe of center, improves automatic dissolving gas blowdown processing effect, only uses one power source to drive, has saved the operation energy consumption of air floatation device. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the longitudinal section view of the utility model embodiment 1;

[0020] Figure 2 It is the local structure schematic view of the utility model embodiment 1 dissolving gas pipe;

[0021] Figure 3 It is the internal structure schematic view of the utility model embodiment 1 processing jar;

[0022] Figure 4 It is the longitudinal section view of the utility model embodiment 2;

[0023] Wherein, 1-processing jar, 11-water inlet valve pipe, 12-backflow pipe, 13-tooth ring, 2-cavity, 3-stirring rod, 31-connection disc, 4-rotary motor, 5-dissolving gas pipe, 51-mounting pipe, 511-vane, 512-gear, 6-air compressor, 7-floating plate, 8-equipment jar. DETAILED DESCRIPTION

[0024] The utility model will be further explained in detail in connection with specific implementation manner to better embody the advantage of the utility model.

[0025] Embodiment 1: as Figure 1 The utility model discloses a kind of automatic low-energy consumption cyclone dissolving gas air floatation devices, including processing jar 1 and equipment jar 8 connected in upper and lower, cavity 2 is rotationally arranged in the bottom of processing jar 1, stirring rod 3 is fixedly arranged on cavity 2, rotary motor 4 is arranged in equipment jar 8 interior and output end is fixedly connected with stirring rod 3, dissolving gas pipe 5 is arranged on cavity 2 and is communicated with the inside of cavity 2, and air compressor 6 is arranged in the bottom of equipment jar 8 and is used to supply gas to cavity 2;Dissolving gas pipe 5 has four, four dissolving gas pipes 5 are distributed in circumference and interval on cavity 2;

[0026] The top of the stirring rod 3 is provided with a connecting disc 31 with a groove, and the connecting disc 31 is rotationally connected to the inner top of the treatment tank 1 through a connecting rod; a first pipeline 11 and a second pipeline 12 are arranged on the side wall of the treatment tank 1 below the connecting disc 31, the first pipeline 11 and the second pipeline 12 are communicated, and a water outlet pipe and a circulating pump are arranged on the second pipeline 12; a one-way valve is arranged in each of the first pipeline 11 and the second pipeline 12; the one-way valve in the first pipeline 11 allows one-way flow from the outside to the inside of the treatment tank 1, and the one-way valve in the second pipeline 12 allows one-way flow from the inside of the treatment tank 1 to the communication position of the first pipeline 11;

[0027] A liquid level sensor is arranged in the treatment tank 1; the stirring rod 3 has a pipeline and a valve for controlling pollution control, and the stirring rod 3 penetrates through the inner bottom of the treatment tank 1 and is rotationally and sealingly connected to an annular liquid guide cavity arranged in the equipment tank 8; a plurality of gas outlets are arranged on the dissolved gas pipe 5, and a one-way valve is arranged at each gas outlet;

[0028] Groove holes for docking are arranged on the side wall of the stirring rod 3 and the inner ring surface of the annular liquid guide cavity, and the annular liquid guide cavity is provided with a pollution discharge pipe in communication with the outside; the treatment tank 1 has a cavity at the bottom, an air compressor 6 is in communication with the cavity through a conduit, and a cavity body 2 is rotationally and sealingly connected to the bottom of the treatment tank 1, and a through hole for docking is arranged on the top of the cavity and the bottom of the cavity body 2;

[0029] As shown in Figure 2 、 3 each dissolved gas pipe 5 is longitudinally and rotationally provided with four mounting pipes 51, each mounting pipe 51 is longitudinally and sequentially provided with a blade 511 and a gear 512, and a tooth ring 13 in meshing connection with the gear 512 is correspondingly arranged on the inner wall of the treatment tank 1; the gear 512 is provided with a through hole.

[0030] It should be noted that the embodiment also includes a power supply and a controller, and the power supply, the controller, the rotating motor 4, the air compressor 6, the one-way valve, the liquid level sensor and the circulating pump are all commercially available products, and will not be described here;

[0031] The rotating motor 4, the air compressor 6, the liquid level sensor and the circulating pump in the embodiment are respectively electrically connected to the power supply and the controller.

[0032] The working principle of the embodiment is as follows: sewage enters the treatment tank 1 through the water inlet valve pipe 11, at the same time, the air compressor 6 starts to work, compresses and delivers air into the cavity 2 connected with the bottom of the treatment tank 1, and the air bubbles are continuously injected into the sewage through the multiple air outlets on the dissolved air pipe 5. The rotating motor 4 is started to drive the cavity 2 to rotate at the bottom of the treatment tank 1, and the stirring rod 3 on the cavity 2 rotates accordingly. The micro-bubbles adhere to the suspended particles, oil and other pollutants in the water, increasing the buoyancy of the pollutants. Due to the action of the buoyancy, these pollutants with bubbles will gradually float to the water surface of the treatment tank 1. When the liquid is stirred, a vortex is formed, the liquid rotates around a center point, the center part of the vortex usually has lower pressure, and the edge part has higher pressure. The pressure difference will cause the floating objects to move to the center, and the foam impurities are discharged through the central discharge pipe. The backflow pipe 12 provided on the upper half of the side wall of the treatment tank 1 is communicated with the water inlet valve pipe 11. Under the action of the circulating pump, part of the treated water enters the treatment process again through the backflow pipe 12, which helps to improve the treatment efficiency. Through the rotation of the dissolved air pipe 5, the gear 512 rotates through the gear ring 13 to drive the blade to stir and strengthen the dissolved air effect. After the foam impurities discharged by the second pipe 12 are less, the circulating pump is stopped, and the backflow is not continued. The treated water is discharged, and the new sewage to be treated is introduced through the first pipe 11.

[0033] Embodiment 2: As shown in the figure, the difference between this embodiment and embodiment 1 is that the floating plate 7 is arranged outside the connecting plate 31. Figure 4

[0034] Embodiment 3: The difference between this embodiment and embodiment 1 is that the gear ratio of each set of gear 512 and gear ring 13 is different, and the ratio from top to bottom is 1:2:3:4.

[0035] Embodiment 4: The difference between this embodiment and embodiment 1 is that the treatment tank 1 is provided with a cleaning valve, and the equipment tank 8 is provided with an overhaul valve, which facilitates the cleaning and overhaul of the inside of the treatment tank 1 and the equipment tank 8.​

Claims

1. An automated low energy dissipation cyclonic dissolved air flotation device, characterized in that, The utility model provides a kind of air flotation equipment, including upper and lower connection processing tank (1) and equipment tank (8), cavity (2) is rotationally arranged in the bottom of processing tank (1), stirring rod (3) is fixedly arranged on the cavity (2), rotating motor (4) is arranged in equipment tank (8) inside and output end is fixedly connected with stirring rod (3), gas dissolving pipe (5) is arranged on cavity (2) and is communicated with the inside of the cavity (2), and air compressor (6) is arranged in the bottom of equipment tank (8) and is used to supply gas to cavity (2);The top of stirring rod (3) is provided with connecting disc (31) with groove, and the connecting disc (31) is rotationally connected with the top of processing tank (1) by connecting rod;First pipeline (11) and second pipeline (12) are arranged on the side wall of processing tank (1) below connecting disc (31), the first pipeline (11), second pipeline (12) are communicated, and water outlet pipe and circulating pump are arranged on second pipeline (12);Stirring rod (3) has pipeline inside, and stirring rod (3) is rotationally and sealingly connected with annular liquid guide cavity provided in equipment tank (8) by penetrating the bottom of processing tank (1);Gas dissolving pipe (5) is provided with a plurality of gas outlets, and one-way valve is arranged at gas outlet.

2. The automatic low-energy consumption cyclone dissolved air flotation device according to claim 1, characterized in that, The side wall of stirring rod (3) and the inner ring surface of annular liquid guide cavity are both provided with groove hole for docking, and the annular liquid guide cavity is provided with blow-off pipe communicated with the outside world;The bottom of processing tank (1) has cavity, air compressor (6) is communicated with cavity by conduit, cavity (2) is rotationally and sealingly connected with the bottom of processing tank (1), and the top of cavity and the bottom of cavity (2) are both provided with through hole for docking.

3. The automatic low-energy consumption cyclone dissolved air flotation device according to claim 1, characterized in that, Gas dissolving pipe (5) is provided with a plurality of mounting pipes (51) rotationally and longitudinally spaced, each mounting pipe (51) is provided with blade (511) and gear (512) longitudinally and sequentially arranged respectively, and processing tank (1) is provided with gear ring (13) engaged with gear (512) correspondingly on inner wall.

4. The automatic low-energy consumption cyclone dissolved air flotation device according to claim 3, characterized in that, The number of teeth of each set of gear (512) and gear ring (13) is different.

5. The automatic low-energy consumption cyclone dissolved air flotation device according to claim 4, characterized in that, Gear (512) is provided with via hole, and processing tank (1) is provided with cleaning valve.

6. The automatic low-energy consumption cyclone dissolved air flotation device according to claim 1, characterized in that, Connecting disc (31) is provided with floating plate (7) outside.

Images