A cyclone type waste gas treatment device

Abstract

The present invention is a cyclone-type waste gas treatment device, which includes a cyclone cylinder. A volute-shaped inlet pipe is arranged on the side of the cyclone cylinder. The upper end is a cyclone outlet, and the lower end is a liquid outlet. The cyclone cylinder includes an outer cylinder and an inner cylinder which are coaxially arranged and sequentially arranged from outside to inside; the inlet pipe is connected to and communicated with the inner cylinder; a part of the outer side surface of the inner cylinder is connected to the inner side surface of the outer cylinder, so that the space between the inner cylinder and the outer cylinder is divided into a plurality of cyclone sub-chambers; the inner cylinder is provided with a plurality of cyclone holes corresponding to the cyclone sub-chambers to communicate the inner cylinder with the cyclone sub-chambers. The setting of the inner cylinder enables the liquid to flow downward on the inner and outer walls of the inner cylinder and the inner wall of the outer cylinder, thereby increasing the adsorption area of solid particles and improving the adsorption rate.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment devices, and particularly to a cyclone-type waste gas treatment device. Background Art

[0002] Cyclone-type waste gas treatment devices generally include key components such as a cyclone cylinder, a spray system, a packing layer, a demisting layer, and a fan. When waste gas enters the tower, it is affected by a swirl plate or a special gas flow guiding device to generate a high-speed rotating gas flow, that is, a cyclone. This cyclone effect significantly increases the contact area and contact probability between the waste gas and the spray liquid, providing favorable conditions for the subsequent purification process.

[0003] However, in practical applications, there are some problems in the design of the cyclone cylinder. Since the diameter of the cyclone cylinder is usually large, the cyclone intensity inside the cyclone cylinder is relatively low. The insufficient cyclone intensity means that the rotation speed and energy dissipation rate of the waste gas inside the cyclone cylinder are reduced, thus affecting the mixing effect and purification efficiency between the waste gas and the spray liquid.

[0004] In addition, the liquid sprayed by the spray system mainly adsorbs the centrifugally separated particles during the process of flowing downward along the inner wall of the cyclone cylinder. However, due to the limited area of the inner wall of the cyclone cylinder, this contact method results in a relatively small effective contact area of the liquid, thereby limiting the removal rate of harmful substances. Especially when dealing with high-concentration waste gas, this problem is particularly prominent. Summary of the Invention

[0005] To solve the technical problems in the background art, the present invention discloses a cyclone-type waste gas treatment device.

[0006] The present invention provides a cyclone-type waste gas treatment device, which includes a tower body. A water tank, a swirl area, a first spray chamber, an adsorption chamber, a second spray chamber, and a demisting chamber are sequentially arranged in the tower body from bottom to top; a water pump pumps the liquid in the water tank into the spray pipes in the first spray chamber and the second spray chamber, and sprays the liquid downward through spray heads; a cyclone cylinder is arranged in the swirl area, a volute-shaped inlet pipe is arranged on the side of the cyclone cylinder, a packing is arranged in the adsorption chamber; a water mist adsorbent is arranged in the demisting chamber; the suction port of the fan is connected to the air outlet at the top of the tower body, and the waste gas is pumped into the cyclone cylinder through the inlet pipe and rotates in the cyclone cylinder. The particulate matter in the waste gas is thrown towards the inner wall of the cyclone cylinder under the action of centrifugal force. The liquid sprayed from the first spray chamber flows downward along the inner wall of the cyclone cylinder and adsorbs this particulate matter; the cyclone cylinder includes an outer cylinder and an inner cylinder arranged coaxially and sequentially from outside to inside;

[0007] Part of the outer side surface of the inner cylinder is connected to the inner side surface of the outer cylinder, thereby dividing the space between the inner cylinder and the outer cylinder into a plurality of independent cyclone sub-chambers; the inner circumferential wall of the inner cylinder encloses a cyclone main chamber;

[0008] The inlet pipe is tangent to and communicates with the cyclone main chamber;

[0009] The inner cylinder is provided with a plurality of cyclone holes corresponding to the cyclone sub-chambers, which connect the cyclone main chamber and the cyclone sub-chambers.

[0010] After the waste gas enters the cyclone main chamber and the cyclone sub-chambers, it flows upward in a vortex shape.

[0011] The beneficial effects of the above settings are as follows: 1. The setting of the inner cylinder enables the liquid to flow downward on the inner and outer walls of the inner cylinder and the inner wall of the outer cylinder, thereby increasing the adsorption area of solid particles and improving the adsorption rate; 2. When the waste gas enters the cyclone tube, vortices are formed not only in the inner cylinder but also in the cyclone sub-chambers, thus improving the swirling intensity of the waste gas and the removal efficiency of solid particles in the waste gas; 3. A primary wind is formed in the inner cylinder, with high intensity, and larger particles in the waste gas are more likely to be thrown towards the inner wall of the inner cylinder and adsorbed and removed by the liquid flowing downward along the inner wall of the inner cylinder; a secondary wind is formed in the cyclone sub-chambers, and smaller solid particles are thrown towards the inner wall of the outer cylinder and the outer wall of the inner cylinder and adsorbed and removed by the liquid flowing downward along the inner wall of the outer cylinder and the outer wall of the inner cylinder; in this way, the fixed particles in the waste gas are separated in two stages, and the removal efficiency is higher; 4. The cyclone sub-chambers are independent of each other and there is no air leakage between them, making the vortex air flow formed inside them more stable.

[0012] The position of the cyclone holes directly affects the stability of the air flow forming a vortex in the cyclone sub-chambers. Based on this, a further improvement lies in: the angle formed by the side wall of the cyclone sub-chamber facing the outlet of the cyclone hole and the axial direction of the cyclone hole is greater than 120°; the cyclone holes are located above the inlet pipe. The setting that the cyclone holes are tangent to the inner wall of the inner cylinder enables the air flow in the inner cylinder to flow into the cyclone sub-chambers through the cyclone holes without resistance; the setting of the angle between the cyclone holes and the side wall of the cyclone sub-chamber makes the reflected direction of the air flow away from the center position of the cyclone sub-chamber when the air flow is reflected by the side wall of the cyclone sub-chamber, which not only reduces the attenuation rate of the side wall to the air flow but also increases the radial flow path of the air flow in the cyclone sub-chambers, thus facilitating the formation of a vortex. The position setting of the cyclone holes enables the air flow to form a vortex in the lower area of the cyclone holes first. When the air flow flows upward in a vortex shape, it can not only stably flow into the cyclone holes but also maintain the stability of the air flow intensity.

[0013] The difference in length and width of the cyclone sub-cavity directly affects the stability of the vortex formed by the airflow in the cyclone sub-cavity. Based on this, further improvements are as follows: the cross-section of the inner hole of the outer cylinder is a first polygon; the outer contour line of the cross-section of the inner cylinder is a second polygon, and the inner contour line of the cross-section of the inner cylinder is a circle; the number of the first polygon and the second polygon is the same, and the first polygon and the second polygon are arranged staggered with each other, so that the space formed between the inner cylinder and the outer cylinder is divided into multiple independent cyclone sub-cavities; the inner cylinder is located at the vertices of the second polygon to form a vortex forming part; the cyclone hole passes through the vortex forming part along the tangent direction of the inner wall of the inner cylinder. In this way, the difference between the length and width of the cross-section of the cyclone sub-cavity is small, which facilitates the formation of vortex airflow. Moreover, the position setting of the cyclone hole extends the length of the cyclone hole, thereby improving the guiding performance of the cyclone hole on the airflow, making the stability of the airflow flowing into the cyclone sub-cavity more stable.

[0014] If the number of edges of the first polygon and the second polygon is too large, the area of ​​the cyclone sub-cavity is too small, and the difference between the length and width of the cyclone sub-cavity is large, it is difficult to form a stable vortex airflow in the cyclone sub-cavity; if the number of edges of the first polygon and the second polygon is too small, the thickness between the inner and outer walls of the outer cylinder is large, resulting in the outer cylinder being too heavy, which will not only cause waste of materials, but also reduce the internal space of the outer cylinder and affect the flow rate of exhaust gas. Based on this, further improvements are: the first polygon and the second polygon are both regular octagons; the connection between the edges of the outer side of the inner cylinder and the outer cylinder is located at the center of the inner side of the inner hole.

[0015] The outer wall of the outer cylinder is circular, and the inner wall is a regular polygon. It is difficult and costly to form the outer cylinder in one piece. Based on this, further improvements are made in that: the inner wall of the outer cylinder is connected with a partition whose cross section is a regular polygon; the upper end of the cavity formed between the outer cylinder and the partition is sealed by a sealing plate.

[0016] If the inner cylinder is also formed by welding a round tube and a regular polygonal tube, the structure of the cyclone hole will be unstable and the precision will be low. Based on this, a further improvement is that the cyclone forming part and the inner cylinder are integrally formed.

[0017] The packing is used to increase the contact area between the airflow and the liquid and improve the efficiency of removing impurities in the exhaust gas. However, in actual use, since the packing holes in the packing are all through holes, when the liquid and the exhaust gas flow relatively in the same packing hole, there will inevitably be some situations where the exhaust gas and the liquid flow are staggered, resulting in these exhaust gases not contacting the liquid. Based on this, further improvements are: a turntable driven by a motor is provided at the lower end of the packing; the upper side of the turntable is in contact with the lower side of the packing; the turntable is provided with through grooves running through the upper and lower sides; the through grooves are arranged in a plurality of rotationally symmetrical and spaced apart arrangements; the part of the turntable between two adjacent through grooves is provided as a shielding portion; the shapes of the through grooves and the shielding portion are arranged so that the through grooves and the shielding portion can both cover the packing holes on the packing; a liquid film forming cavity is formed at the upper part of the packing hole, and a hollow film forming frame is provided in the liquid film forming cavity; a water accumulation cavity is formed at the lower part of the packing hole, and when the lower end of the packing hole is blocked by the shielding portion, the liquid accumulates in the water accumulation cavity. With such a configuration, the shielding part will block the lower end of some of the filling holes. During the blocking, the liquid will form a liquid film at the hollow part of the film-forming frame and accumulate to a certain depth in the water accumulation chamber. The accumulated liquid will block the filling hole. When the turntable rotates, the edge of the shielding part gradually moves away from the filling hole. A downwardly protruding liquid film will first be formed at the lower end of the filling hole. The liquid film will first contact with the exhaust gas and absorb impurities in the exhaust gas. Then the liquid will flow downward from the filling hole, contact with the exhaust gas, and absorb impurities in the exhaust gas. Since it takes a certain amount of time for the accumulated liquid to flow out of the filling hole, during this period of time, the filling hole is always blocked by the liquid. When the liquid absorbs impurities in the exhaust gas, the exhaust gas will not enter the filling hole. When the exhaust gas enters the filling hole, it will also contact the liquid film. Due to the large surface area of ​​the liquid film, the removal efficiency of impurities in the exhaust gas is improved. Moreover, when the accumulated liquid flows downward from the filling hole, its flow rate is relatively fast, which can play a flushing role and remove impurities accumulated in the filling hole.

[0018] In order to increase the area of ​​the liquid film, a further design is that the outer side surface of the film-forming frame forms a spherical shape that bulges upward.

[0019] The specific structure of the film-forming frame is as follows: it includes a horizontally arranged fixed ring, the upper end of which is connected to two arc-shaped, vertically intersecting connecting rods, and the connecting rods are also connected to connecting rings that are parallel to the fixed ring and arranged at intervals, so that the film-forming frame forms an upwardly protruding sphere; the lower end of the fixed ring is vertically connected to a positioning rod that is evenly arranged circumferentially, and the positioning rod rests against the inner wall of the packing hole. Such an arrangement not only provides sufficient flow area for the liquid to flow downward, but also forms a stable support for the liquid film, making the liquid film more stable. The positioning rod is also used for the installation limit of the film-forming frame to ensure that the fixed ring is perpendicular to the packing hole to improve the stability of the liquid film. Moreover, when the position of the film-forming frame is misaligned, or the airflow intensity is too large to cause the liquid film to rupture, multiple water droplets will also be formed at the lower end of the film-forming frame, which can also increase the contact area with the exhaust gas.

[0020] Further, an arc-shaped rod protruding outward is provided at the lower end of the positioning rod, and the arc-shaped rod abuts against the inner wall of the packing hole; the arc-shaped rod bends inward. The setting of the arc-shaped rod makes there be a spacing between the spherical part of the film-forming frame and the inner wall of the packing hole, and the liquid can flow downward from the space between the film-forming frame and the packing hole, avoiding the liquid film formed at the upper end of the film-forming frame from blocking the downward flow of the liquid and reducing the depth of the liquid accumulated in the water accumulation cavity. The inward bending of the arc-shaped rod can prevent the packing from being scratched when the film-forming frame is installed.

[0021] The beneficial effects of the present invention are:

[0022] In a cyclone-type waste gas treatment device of the present invention, through the setting of the inner cylinder, liquid flows downward on the inner and outer walls of the inner cylinder and the inner wall of the outer cylinder, thereby increasing the adsorption area of solid particles and improving the adsorption rate;

[0023] In a cyclone-type waste gas treatment device of the present invention, when waste gas enters the swirl cylinder, eddies are formed not only in the inner cylinder but also in the cyclone sub-cavity, thereby increasing the swirl intensity of the waste gas and improving the removal efficiency of solid particles in the waste gas;

[0024] In a cyclone-type waste gas treatment device of the present invention, a primary wind is formed in the inner cylinder by the waste gas, and its intensity is high. Larger particles in the waste gas are more likely to be thrown towards the inner wall of the inner cylinder and adsorbed and removed by the liquid flowing downward on the inner wall of the inner cylinder; a secondary wind is formed in the cyclone sub-cavity, and smaller solid particles are thrown towards the inner wall of the outer cylinder and the outer wall of the inner cylinder and adsorbed and removed by the liquid flowing downward on the inner wall of the outer cylinder and the outer wall of the inner cylinder; in this way, the fixed particles in the waste gas are separated in two stages, and the removal efficiency is higher;

[0025] In a cyclone-type waste gas treatment device of the present invention, the cyclone sub-cavities are independent of each other and there is no air leakage between them, making the vortex air flow formed inside it more stable;

[0026] In a cyclone-type waste gas treatment device of the present invention, the blocking part will block the lower end of some packing holes, making the liquid accumulate to a certain depth in the blocked packing holes. This accumulated liquid blocks the packing holes. When the turntable rotates and the edge of the blocking part gradually moves away from the packing hole, a downwardly convex liquid film will be formed at the lower end of the packing hole first. The liquid film will contact the waste gas preferentially and absorb the impurities in the waste gas; then the liquid will flow downward from the packing hole, contact the waste gas, and absorb the impurities in the waste gas. Since it takes a certain amount of time for the accumulated liquid to flow out from the packing hole, during this period, the packing hole is always blocked by the liquid. When the liquid absorbs the impurities in the waste gas, the waste gas will not enter the packing hole, thereby improving the removal efficiency of the impurities in the waste gas. Moreover, when the accumulated liquid flows downward from the packing hole, its flow rate is relatively fast, which can play a role in flushing and can remove the impurities accumulated in the packing hole;

[0027] A cyclone-type waste gas treatment device in the present invention forms an upwardly convex spherical liquid film at the top of the film-forming rack, which can increase the contact area with the waste gas and improve the removal efficiency of impurities in the waste gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below with reference to the drawings and embodiments.

[0029] Figure 1 is a schematic structural diagram of the present invention;

[0030] Figure 2 is a schematic structural diagram of another perspective of the present invention;

[0031] Figure 3 is the front view of the present invention;

[0032] Figure 4 is a schematic structural diagram of the cyclone cylinder;

[0033] Figure 5 is the top view of the cyclone cylinder;

[0034] Figure 6 is Figure 5 the sectional view taken along A-A in

[0035] Figure 7 is Figure 6 the sectional view taken along B-B in

[0036] Figure 8 is a schematic structural diagram of the installation of the motor, turntable and packing;

[0037] Figure 9 Relative to Figure 8 the front sectional view of

[0038] Figure 10 is Figure 9 the enlarged view at C in

[0039] Figure 11 is a schematic structural diagram of the film-forming rack;

[0040] Figure 12 is a schematic structural diagram of the formed liquid film or water droplets on the film-forming rack;

[0041] Figure 13 is the front view of the turntable, where the hatching is only used to distinguish the through groove and the shielding part.

[0042] In the figure: 1, cyclone tube; 2, packing; 3, motor; 4, turntable; 5, film-forming frame; 6, tower body; 7, spray pipe; 8, nozzle; 9, cyclone plate; 10, water pump; 11, liquid film; 12, water droplet; 21, packing hole; 41, through groove; 42, shielding part; 51, fixing ring; 52, connecting rod; 53, connecting ring; 54, positioning rod; 55, arc rod; 61, water tank; 62, cyclone area; 63, first spray chamber; 64, adsorption chamber; 65, second spray chamber; 66, demisting chamber; 67, air outlet; 101, inlet pipe; 102, cyclone outlet; 103, liquid outlet; 104, outer cylinder; 105, inner cylinder; 106, cyclone auxiliary chamber; 107, cyclone hole; 108, cyclone forming part; 109, partition board; 110, sealing plate; 211, liquid film forming chamber; 212, water accumulation chamber; 1041, inner hole; 1051, cyclone main chamber; A, included angle. Detailed implementation mode

[0043] Now, the present invention will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic manner, so they only show the components related to the present invention.

[0044] As Figures 1 - 3 shown, the present invention discloses a cyclone type waste gas treatment device, including a tower body 6. Inside the tower body 6, a water tank 61, a cyclone area 62, a first spray chamber 63, an adsorption chamber 64, a second spray chamber 65 and a demisting chamber 66 are sequentially arranged from bottom to top. Horizontal spray pipes 7 are arranged in both the first spray chamber 63 and the second spray chamber 65, and nozzles 8 are installed at the lower ends of the spray pipes 7. Packing 2 is arranged in the adsorption chamber 64 to increase the contact area between gas and liquid; a demisting agent is arranged in the demisting chamber 66; the top of the tower body 6 is an air outlet 67. A water pump 10 is installed outside the water tank 1 to pump out the liquid in the water tank 61 and input it into the spray pipe 7, and the nozzles 8 spray out the liquid. A vertically arranged cyclone tube 1 is arranged in the cyclone area 62. A volute-shaped inlet pipe 101 is arranged on the side of the cyclone tube 1, the upper end is a cyclone outlet 102, and the lower end is a liquid outlet 103; a horizontally arranged cyclone plate 9 is arranged near the top inside the cyclone tube 1. The liquid in the first spray chamber 63 sprays onto the inner wall of the cyclone tube 1 and flows downward along the inner wall of the cyclone tube 1; the liquid in the second spray chamber 65 sprays onto the packing 2. The suction port of the fan is communicated with the air outlet 67. When the fan is started, the waste gas enters the cyclone tube 1 through the inlet pipe 101 and performs a rotational motion. The fixed particles in the waste gas are thrown towards the inner wall of the cyclone tube 1 under the action of centrifugal force, contact with the liquid on the inner wall of the cyclone tube 1 and are adsorbed; when the air flow passes through the cyclone plate 9, its vortex intensity is higher. When the air flow enters the packing 2, it contacts the liquid in the packing 2 to remove impurities in the waste gas; when the air flow enters the demisting chamber 66, the water mist in the air flow is absorbed by the demisting agent, and finally the air flow flows out from the air outlet 67.

[0045] As shown Figures 4 - 7 in the figure, the cyclone cylinder 1 includes an outer cylinder 104 and an inner cylinder 105 which are coaxially arranged and sequentially arranged from outside to inside; the inlet pipe 101 is connected to and communicated with the inner cylinder 105. A partition plate 109 is connected to the inner wall of the outer cylinder 104, and the cross section of the partition plate 109 is a first polygon. A plurality of independent cavities are formed between the outer cylinder 104 and the partition plate 109, and the upper ends of the cavities are blocked by a sealing plate 110. Since the waste gas will not enter the cavities, if the falling liquid enters the cavities, it will cause liquid waste. Therefore, the sealing plate 110 blocks the upper ends of the cavities to prevent the falling liquid from entering the cavities. With such a setting, compared with integrally forming the inner hole 1041 of the outer cylinder 104 into a regular polygon, the structure is simplified and the cost is reduced.

[0046] The outer contour line of the cross section of the inner cylinder 105 is a second polygon, and the inner contour line of the cross section is a circle. The edge of the outer wall of the inner cylinder 105 is connected to the central position of the inner side surface of the inner hole 1041. Adjacent sides of the partition plate 109 and one side of the outer wall of the inner cylinder 105 form a triangle and an independent cyclone sub-chamber 106, and the inner cylinder 105 encloses a cyclone main chamber 1051.

[0047] In this embodiment, both the first polygon and the second polygon are regular octagons, which are used to avoid the number of sides of the first polygon and the second polygon being too many, resulting in too small a cross-sectional area of the cyclone sub-chamber 106, and a large difference between the length and width of the cyclone sub-chamber 106, making it difficult to form a stable vortex air flow in the cyclone sub-chamber 106; to avoid the number of sides of the first polygon and the second polygon being too few, and the space between the outer cylinder 104 and the partition plate 109 being too large, thereby reducing the effective space for the air flow inside the outer cylinder 104 and affecting the flow rate of the waste gas.

[0048] As shown Figure 6 and Figure 7 in the figure, the inner cylinder 105 is provided with eight cyclone holes 107 corresponding to the cyclone sub-chambers 106 to communicate the inner cylinder 105 with the cyclone sub-chambers 106. The cyclone holes 107 penetrate through the swirl forming part 108. With such a setting, the length of the cyclone holes 107 is extended, thereby improving the air flow guiding performance of the cyclone holes 107 and making the air flow more stable when flowing into the cyclone sub-chambers 106.

[0049] Among them, the cyclone holes 107 are located above the inlet pipe, so that the air flow first forms a vortex in the area below the cyclone holes 107. When the air flow flows upward in a vortex shape, it can not only stably flow into the cyclone holes 107, but also maintain the stability of the air flow intensity.

[0050] The structural arrangement of the cyclone secondary chamber 106 is such that the difference between the length and width of the cross-section of the cyclone secondary chamber 106 is small, providing sufficient rotation space for the exhaust gas and facilitating the formation of a vortex of the exhaust gas within the cyclone secondary chamber 106. Among them, the inlet direction of the cyclone hole 107 is tangent to the inner wall of the inner cylinder 105; the angle formed by the side wall of the cyclone secondary chamber 106 facing the outlet of the cyclone hole 107 and the axis of the cyclone hole 107 is greater than 120°. The setting that the cyclone hole 107 is tangent to the inner wall of the inner cylinder 105 enables the airflow in the inner cylinder 105 to flow into the cyclone secondary chamber 106 through the cyclone hole 107 without resistance; the angle setting of the cyclone hole 107 and the side wall of the cyclone secondary chamber 106 causes the reflected direction of the airflow to be away from the center position of the cyclone secondary chamber 106 when the airflow is reflected by the side wall of the cyclone secondary chamber 106, which not only reduces the attenuation rate of the side wall to the airflow but also increases the radial flow path of the airflow within the cyclone secondary chamber 106, thus making it more convenient for vortex formation.

[0051] The advantages of this embodiment are as follows: 1. The setting of the inner cylinder 105 enables the liquid to flow downward on both the inner and outer walls of the inner cylinder 105 and the inner wall of the outer cylinder 104, thereby increasing the adsorption area of solid particles and improving the adsorption rate; 2. When the exhaust gas enters the cyclone cylinder 1, vortices are formed not only in the inner cylinder 105 but also in the cyclone secondary chamber 106, thereby increasing the swirl intensity of the exhaust gas and improving the removal efficiency of solid particles in the exhaust gas; 3. The exhaust gas forms a primary wind in the inner cylinder 105, with high intensity, and larger particles in the exhaust gas are more likely to be thrown towards the inner wall of the inner cylinder 105 and adsorbed and removed by the liquid flowing downward on the inner wall of the inner cylinder 105; a secondary wind is formed in the cyclone secondary chamber 106, and smaller solid particles are thrown towards the inner wall of the outer cylinder 104 and the outer wall of the inner cylinder 105 and adsorbed and removed by the liquid flowing downward on the inner wall of the outer cylinder 104 and the outer wall of the inner cylinder 105; in this way, the fixed particles in the exhaust gas are separated in two stages, and the removal efficiency is higher; 3. The cyclone secondary chambers 106 are independent of each other and there is no air leakage between them, making the vortex airflow formed inside them more stable.

[0052] During the actual use process, since the packing hole 21 is a linear through-hole, when the liquid and the exhaust gas flow relatively in the same packing hole 21, there will inevitably be some situations where the exhaust gas and the liquid flow are misaligned, resulting in these exhaust gases not coming into contact with the liquid. Therefore, the following design is made: as Figures 8 - 10 shown, a circular turntable 4 driven by a motor 3 is provided at the lower end of the packing 2; the upper side of the turntable 4 abuts against the lower side of the packing 2. As Figure 8As shown, the turntable 4 is provided with three sector-shaped through grooves 41 that are uniformly arranged axially and penetrate the upper and lower sides. The areas between the through grooves 41 form a shielding portion 42. In other embodiments, the number of through grooves 41 can also be set to four. The lower part of the packing hole 21 is a water accumulation cavity 212. When the turntable 4 blocks the packing hole 21, the liquid accumulates in the water accumulation cavity 212. With such a setting, the shielding portion 42 blocks the lower ends of some of the packing holes 21, enabling the liquid to accumulate to a certain depth in the water accumulation cavity 212. This accumulated liquid blocks the packing holes 21. When the turntable 4 rotates and the edge of the shielding portion 42 gradually moves away from the packing hole 21, a downwardly convex liquid film 11 will first be formed at the lower end of the packing hole 21. The liquid film 11 preferentially contacts the waste gas and absorbs the impurities in the waste gas; moreover, the surface area of the liquid film 11 is large, which can improve the absorption efficiency of the impurities in the waste gas. Subsequently, the liquid will flow downward from the packing hole 21, contact the waste gas, and absorb the impurities in the waste gas. Since it takes a certain amount of time for the accumulated liquid to flow out completely from the packing hole 21, during this period, the packing hole 21 is always blocked by the liquid. When the liquid adsorbs the impurities in the waste gas, the waste gas will not enter the packing hole 21, thereby reducing the content of impurities entering the packing hole 21 and improving the removal efficiency of the impurities in the waste gas. Moreover, when the accumulated liquid flows downward from the packing hole 21, its flow rate is relatively fast, which can play a scouring role and remove the impurities accumulated in the packing hole 21.

[0053] As Figure 9 and Figure 10 shown, the upper part of the packing hole 21 is a liquid film forming cavity 211, and a plurality of film forming frames 5 that are spherical and convex upward are installed inside it. The number of film forming frames 5 is set according to the length of the liquid film forming cavity 211.

[0054] As Figure 11 shown, the film forming frame 5 includes a horizontally arranged fixed ring 51. Two arc-shaped and vertically intersecting connecting rods 52 are connected to the upper end of the fixed ring 51. A connecting ring 53 that is parallel to and spaced from the fixed ring 51 is also connected to the connecting rods 52, making the film forming frame 5 form an upwardly convex sphere. As Figure 12 shown, when the liquid falls onto the film forming frame 5, an upwardly convex liquid film 11 will be formed under the action of the film forming frame 5. When the waste gas flows, it will inevitably contact the liquid film 11, thereby further improving the absorption efficiency of the impurities in the waste gas. Moreover, when the position of the film forming frame 5 is misaligned, or when the air flow intensity is too large and the liquid film 11 breaks, as Figure 12 shown, a plurality of water droplets will also be formed at the lower end of the film forming frame 5, which can also increase the contact area between the liquid and the waste gas.

[0055] Six rotationally symmetric positioning rods 54 are also vertically connected to the lower end of the fixing ring 51. The positioning rods 54 abut against the inner wall of the mounting hole 22 for limiting the installation of the film forming frame 5, ensuring that the fixing ring 51 is perpendicular to the mounting hole 22, so as to improve the forming stability of the liquid film 11.

[0056] The lower end of the connecting rod 54 bends inwards to prevent scratching the packing 2 when the film forming frame 5 is installed.

[0057] An arc-shaped rod 55 that bows outwards is also provided on the connecting rod 54. The arc-shaped rod 55 abuts against the inner wall of the packing hole 21, so that there is a gap between the fixing ring 51 and the inner wall of the packing hole 21. Liquid can flow directly downwards through this gap, preventing the liquid film 11 formed at the upper end of the film forming frame 5 from blocking the downward flow of the liquid and reducing the depth of liquid accumulation in the water accumulation cavity 212.

[0058] The working principle of the above cyclone type waste gas treatment device is as follows:

[0059] 1. The water pump 10 pumps the liquid in the water tank 61 into the spray pipe 7 and sprays it downwards from the nozzles 8 on the spray pipe 7; the liquid sprayed downwards from the first spray cavity 63 flows downwards along the inner and outer walls of the inner cylinder 105 and the inner wall of the outer cylinder 104; the liquid sprayed downwards from the second spray cavity 65 flows downwards along the inner wall of the packing hole 21, and when the lower end of the packing hole 21 is blocked, a liquid film is also formed at the hollow part of the film forming frame 5; the liquid flows downwards and finally flows into the filter frame in the water tank 61, enabling the liquid to be recycled.

[0060] 2. When the air starts, the waste gas enters the cyclone main cavity 1051 from the inlet pipe 101 and is located in the lower area of the cyclone hole 107, and a vortex air flow is formed in this area; as the air flow flows upwards, the air flow forms a vortex in the cyclone main cavity 1051, throwing large particle impurities towards the inner wall of the inner cylinder 105; part of the air flow enters the cyclone secondary cavity 106 along the cyclone hole 107 and forms a vortex in the cyclone secondary cavity 106, throwing small particle impurities towards the outer wall of the inner cylinder 105 and the inner wall of the outer cylinder 104. The particle impurities come into contact with and are adsorbed by the liquid on the inner and outer walls of the inner cylinder 105 and the inner wall of the outer cylinder 104, and flow downwards into the filter frame under the action of the liquid flow. The air flow in the cyclone main cavity 1051 continues to flow upwards, passes through the swirl plate 9 to increase the vortex intensity, and flows into the packing hole 21; the air flow in the cyclone secondary cavity 106 also flows into the packing hole 21; in the packing hole 21, the waste gas comes into contact with the liquid, and the impurities in the waste gas are absorbed by the liquid and flow downwards with the liquid; the air flow passing through the packing hole 21 enters the demisting cavity 66, comes into contact with the demisting agent in the demisting cavity 66, and the demisting agent absorbs the liquid droplets in the air flow. Finally, the dry gas flows out from the air outlet 67.

[0061] Taking the above-described ideal embodiment of the present invention as an inspiration, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A cyclonic waste gas treatment device, comprising a tower body (6), wherein the tower body (6) is provided with a water tank (61), a cyclone zone (62), a first spray chamber (63), an adsorption chamber (64), a second spray chamber (65) and a demisting chamber (66) in order from bottom to top; a water pump (10) draws liquid out of the water tank (61), which enters the spray pipe (7) in the first spray chamber (63) and the second spray chamber (65), and sprays the liquid downward through a spray head (8); a cyclone cylinder (1) is provided in the cyclone zone (62), a volute-shaped inlet pipe (101) is provided on the side of the cyclone cylinder (1), and a filler (2) is provided in the adsorption chamber (64); an air intake of a fan is connected to an air outlet (67) at the top of the tower body (6), and the device is characterized in that: The cyclone cylinder (1) comprises an outer cylinder (104) and an inner cylinder (105) which are coaxially arranged and arranged in sequence from the outside to the inside; The outer side surface of the inner cylinder (105) is partially connected to the inner side surface of the outer cylinder (104), so that the space between the inner cylinder (105) and the outer cylinder (104) is divided into a plurality of independent cyclone sub-cavities (106); the inner circle of the inner cylinder (105) encloses a cyclone main cavity (1051); The inlet pipe (101) is tangent to and communicates with the cyclone main chamber (1051); The inner cylinder (105) is provided with a plurality of cyclone holes (107) corresponding to the cyclone sub-cavities (106), so as to connect the cyclone main cavity (1051) with the cyclone sub-cavity (106); After the exhaust gas enters the cyclone main chamber (1051) and the cyclone secondary chamber (106), it flows upward in a vortex shape; The angle (A) formed between the side wall of the cyclone sub-chamber (106) facing the outlet of the cyclone hole (107) and the axial direction of the cyclone hole (107) is greater than 120°; The cyclone hole (107) is located above the inlet pipe (101); The cross section of the inner hole (1041) of the outer cylinder (104) is a first polygon; The outer contour line of the cross section of the inner cylinder (105) is a second polygon, and the inner contour line of the cross section of the inner cylinder (105) is a circle; the first polygon and the second polygon have the same number of strips, and the first polygon and the second polygon are arranged staggered with each other, so that the space formed between the inner cylinder (105) and the outer cylinder (104) is divided into a plurality of independent cyclone sub-cavities (106); The inner cylinder (105) is located at each vertex of the second polygon to form a swirl forming portion (108); The cyclone hole (107) penetrates the cyclone forming portion (108) along the tangent direction of the inner wall of the inner cylinder (105); The inner wall of the outer cylinder (104) is connected to a partition plate (109) having a regular polygonal cross section; The upper end of the cavity formed between the outer cylinder (104) and the partition plate (109) is sealed by a sealing plate (110).

2. A cyclonic exhaust gas treatment device according to claim 1, characterized in that: The first polygon and the second polygon are both regular octagons; The connection between the edge of the outer side surface of the inner cylinder (105) and the outer cylinder (104) is located at the center of the inner side surface of the inner hole (1041).

3. A cyclonic exhaust gas treatment device according to claim 1, characterized in that: The swirl forming portion (108) and the inner cylinder (105) are integrally formed.

4. A cyclonic exhaust gas treatment device according to claim 1, characterized in that: A rotating disk (4) driven to rotate by a motor (3) is provided at the lower end of the filler (2); The upper side of the rotating disk (4) contacts the lower side of the filler (2); The rotating disk (4) is provided with a through slot (41) penetrating the upper and lower sides; The through grooves (41) are provided as a plurality of rotationally symmetrical and spaced apart arrangements; The portion of the rotating disk (4) between two adjacent through slots (41) is provided as a shielding portion (42); The shapes of the through groove (41) and the shielding portion (42) are arranged such that both the through groove (41) and the shielding portion (42) can cover the filler hole (21) on the filler (2); A liquid film forming cavity (211) is formed at the upper portion of the filling hole (21), and a hollow film forming frame (5) is arranged in the liquid film forming cavity (211); A water accumulation chamber (212) is formed at the lower portion of the filling hole (21); when the lower end of the filling hole (21) is blocked by the blocking portion (42), liquid accumulates in the water accumulation chamber (212).

5. A cyclonic exhaust gas treatment device according to claim 4, characterized in that: The outer side surface of the film forming frame (5) is in the shape of a sphere that protrudes upward.

6. A cyclonic exhaust gas treatment device according to claim 5, characterized in that: The film forming frame (5) comprises a horizontally arranged fixing ring (51), the upper end of the fixing ring (51) is connected to two arc-shaped connecting rods (52) intersecting vertically, and the connecting rods (52) are further connected to connecting rings (53) arranged parallel to the fixing ring (51) and spaced apart, so that the film forming frame (5) forms a spherical shape protruding upwards; The lower end of the fixing ring (51) is vertically connected to positioning rods (54) evenly arranged around the circumference, and the positioning rods (54) abut against the inner wall of the filling hole (21).

7. A cyclonic exhaust gas treatment device according to claim 6, characterized in that: The lower end of the positioning rod (54) is provided with an outwardly protruding arc rod (55), and the arc rod (55) abuts against the inner wall of the filling hole (21); The arc-shaped rod (55) is bent inwardly.

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