Gas-liquid treatment device

Abstract

The present invention provides a gas-liquid treatment device that can perform aeration treatment with high efficiency and is also capable of treating dust and harmful gases. [Solution] In the gas-liquid treatment apparatus 1, in the mixing chamber 10 of the casing 2, a plurality of collision parts 14, which are cylindrical rod-shaped, are arranged at equal intervals along the circumference of the rotor 16 centered on the rotation axis A of the rotor 16 on its outer circumference.

Description

Technical Field

[0001] The present invention relates to a gas-liquid treatment device that uses centrifugal force to mix a sprayed liquid with a gas for purification or aeration of the liquid or gas.

Background Art

[0002] As a conventional technique for aerating water containing volatile organic compounds (VOCs), for example, there is an aeration treatment device (hereinafter referred to as "Literature-known Invention 1") described in Patent Document 1 below. According to this Literature-known Invention 1, a centrifugal rotating disk is provided in an aeration chamber formed in a case, and the centrifugal rotating disk is rotated to radiate water into the aeration chamber. A plurality of blades are formed on the centrifugal rotating disk. When water is supplied toward the center and rotates, the water is atomized by centrifugal force and scattered. The scattered water contacts the air sucked into the aeration chamber and is aerated. According to this Literature-known Invention 1, for example, water can be aerated with high efficiency without being affected by the hardness components, turbidity, or concentration of water.

Prior Art Documents

Patent Documents

[0003] [[ID=第二十二]]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The finer the water particles scattered in the aeration chamber and the higher the air concentration, the higher the efficiency of the aeration treatment and the higher the removal efficiency of VOCs.

[0005] The present invention has been proposed in view of such circumstances. An object of the present invention is to provide a gas-liquid treatment device that can perform aeration treatment with high efficiency and, secondarily, can also perform dust treatment and harmful gas treatment. [Means for solving the problem]

[0006] To achieve the above objective, the gas-liquid processing apparatus according to the present invention is a gas-liquid processing apparatus that mixes a liquid discharged in a radial direction intersecting the rotation axis of the rotor with a gas drawn into the processing chamber by rotating a rotor within the processing chamber, characterized in that a collision portion is arranged between the inner surface of the processing chamber and the rotor, on the outer circumference of the rotor, to which the liquid discharged in the radial direction collides.

[0007] The gas-liquid processing apparatus according to the present invention is characterized in that the part to be impacted is a cylindrical rod shape extending in a direction intersecting the radial direction.

[0008] The gas-liquid processing apparatus according to the present invention is characterized in that a plurality of the collision parts are arranged at equal intervals along the circumference centered on the rotation axis.

[0009] The gas-liquid treatment apparatus according to the present invention is characterized in that a hole is formed in the casing through which the treatment chamber is formed, through which a shaft carrying the rotating shaft passes, and the rotating shaft has a supply passage extending toward the rotor, and gas is drawn in from the supply passage and also from the hole.

[0010] The gas-liquid processing apparatus according to the present invention is characterized in that the processing chamber is cylindrical in shape with respect to the rotating axis, and has a partition that divides it into a mixing chamber where the rotor is arranged to mix the liquid and gas, and a separation chamber for separating the liquid and gas, the partition extending from the upper end of the processing chamber to below the center, a passage leading from the mixing chamber to the separation chamber formed at the lower part of the partition, an exhaust port leading to the upper part of the separation chamber, and a drain port leading to the lower part of the separation chamber. [Effects of the Invention]

[0011] The gas-liquid treatment apparatus according to the present invention mixes a liquid discharged in a radial direction intersecting the rotor's axis of rotation with a gas drawn into the treatment chamber by rotating a rotor within the treatment chamber. A collision target is located between the inner surface of the treatment chamber and the rotor, on the outer circumference of the rotor, where the discharged liquid collides. The liquid discharged by the centrifugal force of the high-speed rotating rotor is mixed with the gas within the treatment chamber (hereinafter, the fluid in this gas-liquid mixed state will be referred to as "gas-liquid mixed fluid"), and is further atomized upon collision with the collision target. Therefore, aeration treatment can be performed with high efficiency. Furthermore, harmful gases and other substances removed from the liquid can be purified by other means.

[0012] The gas-liquid treatment apparatus according to the present invention has a cylindrical rod shape for the impacted portion, extending in a direction intersecting the radial direction. The gas-liquid mixed fluid is further atomized by the impact of colliding with the impacted portion. At the same time, the atomized gas-liquid mixed fluid is dispersed and agitated at the impacted portion. Therefore, aeration treatment can be performed with high efficiency. Because the impacted portion is cylindrical, it does not create resistance that obstructs the flow of the gas-liquid mixed fluid, allowing the gas-liquid mixed fluid to diffuse smoothly.

[0013] The gas-liquid treatment apparatus according to the present invention has multiple collision points arranged at equal intervals along the circumference of a rotation axis. The gas-liquid mixed fluid is atomized at multiple locations corresponding to the multiple collision points. The gas-liquid mixed fluid is vigorously mixed around the rotor, promoting gas-liquid contact. Therefore, aeration treatment can be performed with high efficiency.

[0014] The gas-liquid treatment apparatus according to the present invention has a casing forming a treatment chamber, through which a shaft carrying a rotating axis passes, and a supply passage extending toward the rotor on the rotating axis. Gas is drawn in from the supply passage and also from the hole. In addition to the intake from the supply passage, the intake from the hole increases the gas concentration in the treatment chamber, further promoting gas-liquid contact. Therefore, aeration treatment can be performed with high efficiency.

[0015] The gas-liquid processing apparatus according to the present invention has a processing chamber that is cylindrical in shape around a rotating axis and has a partition that divides it into a mixing chamber where a rotor is arranged to mix the liquid and gas, and a separation chamber where the liquid and gas are separated. The partition extends from the upper end of the processing chamber to below the center, and a passage leading from the mixing chamber to the separation chamber is formed at the bottom of the partition. An exhaust port leads to the upper part of the separation chamber, and a drain port leads to the lower part of the separation chamber. In the cylindrical processing chamber, the space is widest in the central part, and narrower in the upper and lower parts compared to the central part. Therefore, the space in the separation chamber gradually widens from the lower part where the passage is located towards the central part, and gradually narrows towards the upper part where the exhaust port is located. The gas-liquid mixed fluid flows from the mixing chamber through the passage to the separation chamber. Because the passage is located at the bottom of the mixing chamber, the gas-liquid mixed fluid rises in the separation chamber and diffuses in the wide space in the central part. In the central section, the rate at which the gas-liquid mixed fluid disperses decreases due to diffusion, thus increasing the time of gas-liquid contact and promoting gas-liquid contact. Also, in the central section, the gas-liquid mixed fluid that continuously flows in from the passage section accumulates, causing water vapor to combine with other water vapor particles to form droplets that fall and are drained out through the drain port at the bottom. The gas is exhausted through the exhaust port at the top. Therefore, proper exhaust and drainage are possible. [Brief explanation of the drawing]

[0016] [Figure 1] Figure 1 is a schematic side cross-sectional view of a gas-liquid processing apparatus according to an embodiment of the present invention. [Figure 2] Figure 2 is a schematic front cross-sectional view of the gas-liquid processing apparatus according to an embodiment of the present invention, taken along line II-II of Figure 1. [Figure 3] Figure 3 is a schematic diagram of the main parts of a gas-liquid processing apparatus according to an embodiment of the present invention. [Modes for carrying out the invention]

[0017] Hereinafter, a gas-liquid treatment apparatus according to an embodiment of the present invention will be described with reference to the drawings. Figure 1 shows a schematic side cross-section of the gas-liquid treatment apparatus 1 according to this embodiment, and Figure 2 shows a schematic front cross-section of the gas-liquid treatment apparatus 1. Figure 3 shows a schematic cross-section of the main part.

[0018] As shown in FIGS. 1 and 2, the gas-liquid treatment apparatus 1 includes a cylindrical casing 2 having a treatment chamber 9 formed inside, a supply passage 15 passed through the center of the casing 2, a rotor 16 rotatably attached to the tip of the supply passage 15, a shaft 17 connected to the rotor 16, and a drive unit 19 for driving the shaft 17.

[0019] The casing 2 has a disk-shaped rear surface portion 3, a disk-shaped front surface portion 4 facing the rear surface portion 3 with a space therebetween, and an annular peripheral wall portion 5 connected to the peripheral edge of the rear surface portion 3 and the peripheral edge of the front surface portion 4. The supply passage 15 penetrates the center of the rear surface portion 3, and an exhaust port 6 is formed in the upper part of the rear surface portion 3. A drain port 7 is formed in the lower part of the peripheral wall portion 5. A hole portion 8 is formed in the center of the front surface portion 4.

[0020] The supply passage 15 penetrates the rear surface portion 3 of the casing 2 and reaches inside the treatment chamber 9, and extends toward the rotor 16. The supply passage 15 allows the untreated liquid, which is the liquid before the aeration treatment, and the primary gas, which is a gas, to flow through. The rotor 16 is connected to the tip of the supply passage 15 and is disposed inside the treatment chamber 9. The rotor 16 has a plurality of blades (not shown). The shaft 17 is passed through the hole portion 8 of the front surface portion 4 of the casing 2 and is connected to the rotor 16 inside the treatment chamber 9. Since the hole portion 8 is slightly larger than the outer diameter of the shaft 17, a gap is formed around the shaft 17 in the hole portion 8. A motor as the drive unit 19 is connected to the end of the shaft 17 via a belt 18. The supply passage 15 and the shaft 17 are aligned coaxially, and the shaft 17 serves as the rotation axis A of the rotor 16.

[0021] The treatment chamber 9 is cylindrical with the rotation axis A stopped, similar to the casing 2. The treatment chamber 9 is partitioned by the partition portion 12 into a mixing chamber 10 for mixing the untreated liquid and gas, and a separation chamber 11 for separating the aerated treated liquid and gas. The partition portion 12 is generally disc-shaped, extending from the upper end to below the center of the treatment chamber 9 between the rear surface portion 3 and the front surface portion 4, and is connected to the peripheral wall portion 5 of the casing 2. The lower part of the partition portion 12 is not connected to the peripheral wall portion 5, leaving a gap therebetween. A passage portion 13 leading from the mixing chamber 10 to the separation chamber 11 is formed in the lower part of the partition portion 12.

[0022] The mixing chamber 10 is a space formed between the partition portion 12 and the front surface portion 4. A rotor 16 is disposed in the mixing chamber 10. A plurality of collision portions 14 are arranged between the inner surface of the peripheral wall portion 5 of the casing 2 constituting the inner surface of the mixing chamber 10 and the rotor 16 and on the outer periphery of the rotor 16. The collision portions 14 are cylindrical rod-shaped and are connected to the rear surface portion 3 and the front surface portion 4 across between the rear surface portion 3 and the front surface portion 4 of the casing 2. The collision portions 14 are arranged at equal intervals along the circumference centered on the rotation axis A of the rotor 16.

[0023] The separation chamber 11 is a space formed between the partition portion 12 and the rear surface portion 3. The rotor 16 and the collision portions 14 are not disposed in the separation chamber 11. The upper part of the separation chamber 11 communicates with the exhaust port 6, and the lower part of the separation chamber 11 communicates with the drain port 7.

[0024] As described above, the gas-liquid treatment device 1 is configured. Next, the operation and effects of the gas-liquid treatment device 1 will be described.

[0025] In Figure 1, when the drive unit 19 is activated, power is transmitted to the shaft 17 via the belt 18, causing the rotor 16 to rotate together with the shaft 17. The untreated liquid and primary gas flow to the rotor 16 through the supply passage 15 (arrow D1). Because the rotor 16 is rotating at high speed, the untreated liquid is atomized by the centrifugal force of the rotating rotor 16 and radiated in a radial direction intersecting the rotation axis A (arrow D2). At the same time, gas is drawn into the mixing chamber 10, which has become positive pressure due to the rotation of the rotor 16, and the gas and untreated liquid are mixed. At this time, the primary gas is drawn in from the supply passage 15, and the secondary gas, which is a gas, is drawn in from the hole 8 (arrow D3). As a result, the gas concentration in the mixing chamber 10 increases due to the intake from the supply passage 15 and the intake from the hole 8, further promoting gas-liquid contact. Furthermore, since a negative pressure is created at the hole 8, the secondary gas is drawn into the mixing chamber 10, so the gas-liquid mixed fluid does not leak out of the hole 8.

[0026] As shown in Figures 2 and 3, multiple impact points 14 are arranged on the outer circumference of the rotor 16. As a result, the gas-liquid mixed fluid radiated in the radial direction is further atomized by the impact of collisions with the impact points 14, which extend in a direction intersecting the radial direction. Simultaneously, the atomized gas-liquid mixed fluid is divided and scattered by the impact points 14, and agitated. Since the impact points 14 are cylindrical rods, they do not create resistance that obstructs the flow of the gas-liquid mixed fluid, allowing the gas-liquid mixed fluid to diffuse smoothly.

[0027] Since the impact points 14 are arranged at equal intervals along the circumference of the rotor 16 centered on the rotation axis A, the gas-liquid mixed fluid is atomized at multiple locations corresponding to the multiple impact points 14. The gas-liquid mixed fluid is vigorously mixed around the rotor 16, promoting gas-liquid contact. The discharged gas-liquid mixed fluid collides with the inner surface of the peripheral wall portion 5 of the casing 2 and is atomized further, and the rebounded gas-liquid mixed fluid is agitated by the rotation of the rotor 16, further promoting gas-liquid contact.

[0028] As shown in Figure 1, the gas-liquid mixed fluid that diffuses into the mixing chamber 10 and bounces off the inner surface of the peripheral wall 5 is further promoted by being drawn into the gas-liquid mixed fluid (arrow D2) radiated radially from the rotor 16 (arrow D5) as it moves to the rear side of the rotor 16 (arrow D4).

[0029] Since the separation chamber 11 has a cylindrical shape, similar to the casing 2, the gas-liquid mixed fluid flows from the mixing chamber 10 through the passage 13 to the separation chamber 11, rises through the separation chamber 11 (arrow D6), and diffuses in the large space in the center of the separation chamber 11. In the central part, the rate at which the gas-liquid mixed fluid scatters decreases as it diffuses, so the time of gas-liquid contact is extended and gas-liquid contact is promoted. Also, in the central part, the gas-liquid mixed fluid that continuously flows in from the passage 13 accumulates, causing water vapor to combine with other water vapor to form water droplets that fall and are drained from the drain port 7. The gas is exhausted from the exhaust port 6. Therefore, proper exhaust and drainage are possible.

[0030] As described above, the gas-liquid treatment device 1 can perform aeration treatment with high efficiency.

[0031] In another embodiment of the present invention, the cross-section of the part that is hit is polygonal in shape. In another embodiment, the shape, number, and arrangement of the parts to be hit are arbitrary. In another embodiment, there is no gap between the hole formed in the front of the casing and the shaft.

[0032] Although embodiments of the present invention have been described in detail above, the present invention is not limited to the embodiments described above. Furthermore, various design modifications can be made to the present invention without departing from the matters described in the claims. [Explanation of Symbols]

[0033] 1. Gas-liquid treatment device 2 Casing 3 Rear part 4 Front part 5 Peripheral wall 6 Exhaust vents 7 Drain port 8 hole 9 Processing Room 10 Mixing chamber 11 Separation room 12 Partition section 13 Passage section 14 Collided part 15 Supply route 16 rotors 17 Shaft 18 belts 19 Drive unit A rotation axis D1~D6 arrows

Claims

1. A gas-liquid processing apparatus that mixes a liquid discharged in a radial direction intersecting the rotation axis of the rotor with a gas drawn into the processing chamber by rotating the rotor within the processing chamber, Between the inner surface of the processing chamber and the rotor, a collision target is arranged on the outer circumference of the rotor, upon which the liquid radiated in the radial direction collides. The part that is hit is a cylinder or a rod with a polygonal cross-section that extends in a direction intersecting the radial direction, A hole is formed in the casing that forms the processing chamber, through which the shaft that serves as the rotating axis passes. The rotating shaft has a supply passage extending toward the rotor, Gas is drawn in from the supply passage and also from the hole. A gas-liquid treatment apparatus characterized by the following:

2. A gas-liquid processing apparatus that rotates a rotor in a processing chamber, thereby mixing a liquid discharged in a radial direction intersecting the rotation axis of the rotor with a gas drawn into the processing chamber, Between the inner surface of the processing chamber and the rotor, a collision target is arranged on the outer circumference of the rotor, upon which the liquid radiated in the radial direction collides. The part that is hit is a cylinder or a rod with a polygonal cross-section that extends in a direction intersecting the radial direction, The processing chamber is cylindrical in shape centered on the rotation axis and has a partition that divides it into a mixing chamber where the rotor is arranged to mix the liquid and gas, and a separation chamber where the liquid and gas are separated. The partition extends from the upper end of the processing chamber to below the center, A passage leading from the mixing chamber to the separation chamber is formed at the lower part of the partition. An exhaust port is located at the top of the separation chamber, and a drain port is located at the bottom of the separation chamber. A gas-liquid treatment apparatus characterized by the following:

3. A plurality of the collision targets are arranged at equal intervals along the circumference centered on the rotation axis, A gas-liquid apparatus according to claim 1 or 2.

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