A spray foam desulfurization dust collector

Abstract

The present invention relates to the technical field of industrial dust removal, and particularly to a spray foam desulfurization dust collector, which comprises a housing, an air inlet pipe, a collection tank, a guide pipe, and a plurality of nozzles. A baffle is fixedly installed inside the housing, a rotating shaft is rotatably installed inside the baffle, a fan is fixedly installed at the lower end of the rotating shaft, a plurality of bubble-forming openings are equidistantly formed inside the baffle, and a bubble-forming mechanism for generating bubbles and cooperating with the rotating shaft is arranged inside the housing. When the dust-containing gas is introduced, the air flow will drive the rotating shaft inside the baffle to rotate through the fan, and then the rotating shaft will drive a plurality of first magnets outside the collar to rotate, and form bubbles with this as the power source. The bubbles will adsorb and gather the dust in the gas. Due to the large surface area of the bubbles, the dust can be fully adsorbed by the bubbles, and at the same time, the energy loss is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial dust removal, and particularly to a spray foam desulfurization dust collector. Background Art

[0002] China mainly uses coal as its energy source, and the energy structure dominated by coal in China will not change significantly in recent years. The sulfur dioxide concentration in the ambient air of municipalities directly under the Central Government, provincial capitals, special economic zone cities, coastal open cities and key tourist cities should meet the national environmental quality standards, and the deteriorating trend of acid rain in the acid rain control area should be alleviated. To achieve the above goals, it is necessary to strictly control the sulfur dioxide emissions during the coal combustion process.

[0003] When the flue gas concentration of the existing spray foam desulfurization dust collector is too high, more energy needs to be consumed to generate bubbles to ensure sufficient desulfurization of the flue gas, thereby increasing the operating cost of the desulfurization and dust removal equipment.

[0004] Therefore, a spray foam desulfurization dust collector is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a spray foam desulfurization dust collector. When introducing the dust-containing gas, the air flow will drive the rotation of the inner shaft of the baffle through the fan. Subsequently, the shaft will drive the rotation of multiple first magnets outside the collar, and form bubbles with this as the power source. The bubbles will adsorb and gather the dust in the gas. Due to the large surface area of the bubbles, the dust can be fully adsorbed by the bubbles, while reducing the energy loss, so as to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A spray foam desulfurization dust collector, including a housing, an air inlet pipe fixedly installed on one side of the housing for introducing the dust-containing gas into the interior of the housing, a collection tank arranged on the other side of the housing for collecting the dust in the gas and connected to the bottom of the housing through a collection pipe, a gas guide pipe fixedly installed at the upper end of the collection tank and connected to the inner top of the housing through a connection pipe, a plurality of nozzles fixedly installed at equal intervals along the circumferential direction on the inner wall of the housing for spraying the dust-containing gas and connected to a water supply device, a baffle fixedly installed inside the housing, a rotating shaft rotatably installed inside the baffle, a fan fixedly installed at the lower end of the rotating shaft, a plurality of bubble-forming openings equally spaced inside the baffle, and a bubble-forming mechanism for generating bubbles and cooperating with the rotating shaft inside the housing.

[0008] Preferably, the foaming mechanism includes two sets of chutes opened inside the housing. A connecting rod is slidably installed inside each set of chutes. A clamping rod is fixedly installed on the opposite side of the two connecting rods. A fixing ring is fixedly installed between the two clamping rods. A plurality of fixing rods are fixedly installed at equal intervals on the upper ends of the two clamping rods. The upper end of each fixing rod is fixedly installed with a brush strip that cooperates with the foaming port and stores foaming liquid.

[0009] When it is necessary to treat the dust-containing gas, first pass the dust-containing gas into the housing through the air inlet pipe. At the same time, supply water to the plurality of nozzles through the water supply device. Subsequently, the water ejected from the plurality of nozzles will adsorb the dust inside the dust-containing gas, thereby completing the cleaning of most of the dust. The adsorbed dust will flow into the inside of the collection tank through the collection pipe. However, there will still be a small amount of dust that cannot be adsorbed. These small amounts of dust-containing gas will enter the inner top of the housing through the foaming port inside the baffle. The brush strip at the upper end of the fixing rod will brush the stored foaming liquid at the bottom of the foaming port. Thus, bubbles can be formed when the gas flows through the foaming port. The bubbles adsorb and gather the dust in the gas. Due to the large surface area of the bubbles, the dust can be fully adsorbed by the bubbles, with good dust removal effect and reduced cost.

[0010] Preferably, a collar is fixedly installed on the outer edge of the rotating shaft. A plurality of first magnets are fixedly installed at equal intervals along the circumferential direction on the outside of the collar. Two second magnets are symmetrically fixedly installed inside the fixing ring.

[0011] Preferably, the polarities of every two adjacent first magnets are set to be opposite, and the polarities of the two second magnets are also set to be opposite.

[0012] When the dust-containing gas is introduced, the air flow will drive the rotating shaft inside the baffle to rotate through the fan. Subsequently, the rotating shaft will drive the plurality of first magnets outside the collar to rotate. Since the polarities of adjacent first magnets are set to be opposite, and the polarities of the two second magnets are also set to be opposite, after the rotating shaft rotates, the plurality of first magnets will attract the fixing ring to reciprocate through the two second magnets, thereby driving the clamping rod and the plurality of fixing rods to move left and right, and then brushing the stored foaming liquid at the bottom of the foaming port through the brush strip.

[0013] Preferably, a liquid storage bladder is fixedly installed between the connecting rod and the side wall of the chute. One-way valves are installed on both sides of the liquid storage bladder. Liquid guide pipes are opened inside the connecting rod and the clamping rod. The bottom of each brush strip extends into the inside of the liquid guide pipe.

[0014] While the card rod moves left and right, the two connecting rods will also reciprocate inside the sliding groove, thereby driving the liquid storage bladder to continuously expand and contract. Then, in cooperation with the two one-way valves, the foaming liquid inside the liquid supply device is continuously pumped into the liquid storage bladder, and then introduced into the inside of multiple brush bars through the liquid guide tube to ensure that bubbles are continuously blown out inside the bubble outlet, thereby improving the adsorption efficiency of dust.

[0015] Preferably, a liquid supply device for introducing foaming liquid into the liquid storage bladder is provided outside the housing. One side of the one-way valve only allows the foaming liquid to enter the liquid storage bladder, and the other side of the one-way valve only allows the foaming liquid inside the liquid storage bladder to enter the liquid guide tube.

[0016] Preferably, the composition of the foaming liquid is a mixture of 8% detergent, 90% water, and 2% glycerol.

[0017] Bubbles are formed due to the surface tension of water. This tension is the mutual traction force that exists inside an object when it is subjected to a pulling force and is perpendicular to the contact surface between two adjacent parts. The mutual attraction between water molecules on the water surface is stronger than the attraction between water molecules and air. These water molecules are like being glued together. However, if the water molecules are overly glued together, bubbles are not easily formed. Detergent "breaks" the surface tension of water and reduces it to only 1 / 3 of the normal situation, which is exactly the optimal tension required for blowing bubbles. At the same time, the evaporation of water is very fast. When water evaporates, once the surface of the bubble breaks, the bubble disappears. Therefore, some substances must be added to the bubble solution to prevent the evaporation of water. This kind of water-absorbing substance is called a hygroscopic substance. Glycerol is a hygroscopic liquid. It forms a weak chemical bond with water, thereby slowing down the evaporation rate of water, accelerating the formation of bubbles, and making the bubbles not easily break during the process of passing through the connecting tube.

[0018] Preferably, a plurality of bubble-breaking needles are fixedly installed at equal intervals inside the air guide tube.

[0019] After the bubbles are blown out from the connecting tube, the bubble-breaking needles can pierce the bubbles. Subsequently, after the bubbles break, they will become small liquid droplets, mix with the dust to form dirty liquid droplets, and then fall from the inside of the air guide tube, and then be collected through the collection tank.

[0020] Preferably, an electric heating wire is fixedly installed inside each bubble-breaking needle.

[0021] The plurality of bubble-breaking needles can be heated through the electric heating wire. According to hydrodynamics, "the higher the temperature, the smaller the surface tension of the liquid". Therefore, high temperature will accelerate the rupture of bubbles, thereby improving the collection efficiency of dust.

[0022] Preferably, a controller is provided outside the housing, and the water supply device, the liquid supply device, and the plurality of electric heating wires are all electrically connected to the controller.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] 1. When it is necessary to treat the dust-containing gas, first pass the dust-containing gas into the interior of the housing through the intake pipe, and at the same time supply water to the multiple nozzles through the water supply device to complete the cleaning of most of the dust. A small part of the dust-containing gas will form bubbles when flowing through the foaming port. The bubbles will adsorb and gather the dust in the gas. Due to the large surface area of the bubbles, the dust can be fully adsorbed by the bubbles.

[0025] 2. While passing in the dust-containing gas, the airflow will drive the rotation of the inner shaft of the baffle through the fan, and then drive the clamping rod and the multiple fixing rods to move left and right, and then brush the accumulated foaming liquid on the bottom of the foaming port through the brush strip.

[0026] 3. While the clamping rod moves left and right, the foaming liquid inside the liquid supply device can be continuously pumped into the interior of the liquid storage bladder, and then passed into the interiors of the multiple brush strips through the liquid guide pipe to ensure that bubbles are continuously blown out inside the foaming port, thereby improving the adsorption efficiency of the dust.

[0027] 4. After the bubbles are blown out from the connecting pipe, the bubble-breaking needles can pierce the bubbles. Subsequently, after the bubbles burst, they will become small liquid droplets, mix with the dust to form dirty liquid droplets, and then fall from the interior of the air guide pipe. The multiple bubble-breaking needles are heated by the heating wire. According to hydrodynamics, "the higher the temperature, the smaller the surface tension of the liquid", so high temperature will accelerate the bursting of the bubbles, and then they are collected through the collection tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 is a schematic diagram of the internal structure of the present invention;

[0030] Figure 3 is a top view structure diagram of the baffle of the present invention;

[0031] Figure 4 is a schematic diagram of the internal structure of the chute of the present invention;

[0032] Figure 5 is Figure 2 an enlarged view of the structure at A of

[0033] Figure 6 is Figure 2 an enlarged view of the structure at B of

[0034] Figure 7 is Figure 4 an enlarged view of the structure at C of

[0035] Figure 8 For Figure 4 the enlarged view of the structure at position D of

[0036] In the figure: 1 housing, 2 intake pipe, 3 collection tank, 4 guide pipe, 5 collection pipe, 6 connecting pipe, 7 baffle, 8 foaming port, 9 rotating shaft, 10 fan, 11 collar, 12 first magnet, 13 clamping rod, 14 fixing ring, 15 second magnet, 16 chute, 17 connecting rod, 18 fixing rod, 19 liquid storage bag, 20 one-way valve, 21 liquid guide pipe, 22 bubble breaking needle, 23 nozzle. Specific embodiments

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0038] Please refer to Figures 1 to 8 , the present invention provides a spray foam desulfurization dust collector, and the technical solutions are as follows:

[0039] A spray foam desulfurization dust collector includes a housing 1, an intake pipe 2 fixedly installed on one side of the housing 1 for introducing dust-containing gas into the interior of the housing 1, a collection tank 3 arranged on the other side of the housing 1 for collecting dust in the gas and communicating with the bottom of the housing 1 through a collection pipe 5, a guide pipe 4 fixedly installed at the upper end of the collection tank 3 and communicating with the inner top of the housing 1 through a connecting pipe 6, a plurality of nozzles 23 fixedly installed at equal intervals along the circumferential direction on the inner wall of the housing 1 for spraying the dust-containing gas and connected to a water supply device, a baffle 7 fixedly installed inside the housing 1, a rotating shaft 9 rotatably installed inside the baffle 7, a fan 10 fixedly installed at the lower end of the rotating shaft 9, a plurality of foaming ports 8 equally spaced inside the baffle 7, and a foaming mechanism for generating bubbles cooperating with the rotating shaft 9 inside the housing 1. The foaming mechanism includes two groups of chutes 16 opened inside the housing 1, a connecting rod 17 slidably installed inside each group of chutes 16, a clamping rod 13 fixedly installed on the opposite side of the two connecting rods 17, a fixing ring 14 fixedly installed between the two clamping rods 13, a plurality of fixing rods 18 fixedly installed at equal intervals at the upper ends of the two clamping rods 13, and a brush strip cooperating with the foaming port 8 and storing foaming liquid fixedly installed at the upper end of each fixing rod 18.

[0040] When it is necessary to treat the dusty gas, first pass the dusty gas into the interior of the housing 1 through the intake pipe 2, and at the same time supply water to the multiple nozzles 23 through the water supply device. Subsequently, the water ejected from the multiple nozzles 23 will adsorb the dust inside the dusty gas, thereby completing the cleaning of most of the dust. The adsorbed dust will flow into the interior of the collection tank 3 through the collection pipe 5. However, there will still be a small part of the dust that cannot be adsorbed. These small amounts of dusty gas will enter the inner top of the housing 1 through the bubbling port 8 inside the baffle 7. The brush strip at the upper end of the fixed rod 18 will brush the accumulated bubbling liquid at the bottom of the bubbling port 8. Thus, bubbles can be formed when the gas flows through the bubbling port 8. The bubbles adsorb and gather the dust in the gas. Due to the large surface area of the bubbles, the dust can be fully adsorbed by the bubbles, with good dust removal effect and reduced cost.

[0041] As an implementation manner of the present invention, referring to Figure 2 , Figure 4 , Figure 5 and Figure 7 , a collar 11 is fixedly installed on the outer edge of the rotating shaft 9. A plurality of first magnets 12 are fixedly installed on the outside of the collar 11 at equal intervals along the circumferential direction. Two second magnets 15 are symmetrically and fixedly installed inside the fixed ring 14. The polarities of every two adjacent first magnets 12 are set to be opposite, and the polarities of the two second magnets 15 are also set to be opposite.

[0042] When the dusty gas is introduced, the airflow will drive the rotating shaft 9 inside the baffle 7 to rotate through the fan 10. Subsequently, the rotating shaft 9 will drive the plurality of first magnets 12 outside the collar 11 to rotate. Since the polarities of adjacent first magnets 12 are set to be opposite, and the polarities of the two second magnets 15 are also set to be opposite, after the rotating shaft 9 rotates, the plurality of first magnets 12 will attract the fixed ring 14 to reciprocate through the two second magnets 15, thereby driving the latch 13 and the plurality of fixed rods 18 to move left and right, and then brushing the accumulated bubbling liquid at the bottom of the bubbling port 8 through the brush strip.

[0043] As an implementation manner of the present invention, referring to Figure 4 and Figure 8 , a liquid storage bladder 19 is fixedly installed between the side wall of the connecting rod 17 and the sliding groove 16. Check valves 20 are installed on both sides of the liquid storage bladder 19. Liquid guide pipes 21 are opened inside the connecting rod 17 and the latch 13. The bottom of each brush strip extends into the interior of the liquid guide pipe 21. A liquid supply device for introducing bubbling liquid into the interior of the liquid storage bladder 19 is provided outside the housing 1. One side check valve 20 only allows the bubbling liquid to enter the interior of the liquid storage bladder 19, and the other side check valve 20 only allows the bubbling liquid inside the liquid storage bladder 19 to enter the interior of the liquid guide pipe 21.

[0044] While the card rod 13 moves left and right, the two connecting rods 17 will also reciprocate inside the sliding groove 16, thereby driving the liquid storage bladder 19 to continuously expand and contract, and then cooperating with the two one-way valves 20 to continuously pump the foaming liquid inside the liquid supply device into the liquid storage bladder 19, and then introducing it into the inside of multiple brush bars through the liquid guide pipe 21 to ensure that bubbles are continuously blown out inside the bubble outlet 8, thereby improving the adsorption efficiency of dust.

[0045] As an embodiment of the present invention, the composition of the foaming liquid is a mixture of 8% detergent, 90% water, and 2% glycerol.

[0046] Bubbles are formed due to the surface tension of water. This tension is the mutual traction force that exists inside an object when it is subjected to a tensile force and is perpendicular to the contact surface between two adjacent parts. The mutual attraction between water molecules on the water surface is stronger than the attraction between water molecules and air. These water molecules are like being stuck together. However, if the water molecules are overly bonded together, bubbles are not easily formed. The detergent "breaks" the surface tension of water and reduces it to only 1 / 3 of the normal situation, which is exactly the optimal tension required for blowing bubbles. At the same time, the evaporation of water is very fast. When the water evaporates, once the surface of the bubble breaks, the bubble disappears. Therefore, some substances must be added to the bubble solution to prevent the evaporation of water. Such substances with water-absorbing properties are called hygroscopic substances. Glycerol is a hygroscopic liquid. It forms a weak chemical bond with water, thereby slowing down the evaporation rate of water, accelerating the formation of bubbles, and making the bubbles not easily break during the process of passing through the connecting pipe 6.

[0047] As an embodiment of the present invention, referring to Figure 2 , a plurality of bubble-breaking needles 22 are fixedly installed at equal intervals inside the air guide pipe 4.

[0048] After the bubbles are blown out from the connecting pipe 6, the bubble-breaking needles 22 can pierce the bubbles. Subsequently, after the bubbles break, they will become small liquid droplets, mix with the dust to form dirty liquid droplets, and then fall from the inside of the air guide pipe 4, and then be collected by the collection tank 3.

[0049] As an embodiment of the present invention, referring to Figure 2 , an electric heating wire is fixedly installed inside each bubble-breaking needle 22.

[0050] The electric heating wire can be used to heat the plurality of bubble-breaking needles 22. According to hydrodynamics, "the higher the temperature, the smaller the surface tension of the liquid". Therefore, high temperature will accelerate the rupture of the bubbles, thereby improving the collection efficiency of dust.

[0051] As an embodiment of the present invention, referring to Figure 1 , a controller is provided outside the housing 1, and the water supply device, the liquid supply device, and the plurality of electric heating wires are all electrically connected to the controller.

[0052] Working principle: When it is necessary to treat the dust-containing gas, first pass the dust-containing gas into the interior of the housing 1 through the intake pipe 2, and at the same time supply water to the multiple nozzles 23 through the water supply device. Subsequently, the water sprayed from the multiple nozzles 23 will adsorb the dust inside the dust-containing gas, thereby completing the cleaning of most of the dust. The adsorbed dust will flow into the interior of the collection tank 3 through the collection pipe 5. However, there will still be a small part of the dust that cannot be adsorbed. These small amounts of dust-containing gas will enter the inner top of the housing 1 through the bubbling port 8 inside the baffle 7. The brush strip at the upper end of the fixed rod 18 will brush the accumulated bubbling liquid at the bottom of the bubbling port 8. Thus, when the gas flows through the bubbling port 8, bubbles can be formed. The bubbles adsorb and gather the dust in the gas. Due to the large surface area of the bubbles, the dust can be fully adsorbed by the bubbles, with good dust removal effect and reduced cost. When the dust-containing gas is introduced, the airflow will drive the rotation of the rotating shaft 9 inside the baffle 7 through the fan 10. Subsequently, the rotating shaft 9 will drive the rotation of the multiple first magnets 12 outside the collar 11. Since the polarities of adjacent first magnets 12 are set in opposite directions, and the polarities of the two second magnets 15 are also set in opposite directions, after the rotating shaft 9 rotates, the multiple first magnets 12 will attract the fixed ring 14 to reciprocate through the two second magnets 15, thereby driving the clamping rod 13 and the multiple fixed rods 18 to move left and right. Then, the accumulated bubbling liquid is brushed at the bottom of the bubbling port 8 through the brush strip. While the clamping rod 13 moves left and right, the two connecting rods 17 will also reciprocate inside the sliding groove 16, thereby driving the liquid storage bladder 19 to continuously expand and contract. Then, in cooperation with the two one-way valves 20, the bubbling liquid inside the liquid supply device is continuously pumped into the interior of the liquid storage bladder 19 and then introduced into the multiple brush strips through the liquid guide pipe 21 to ensure that bubbles are continuously blown out inside the bubbling port 8, thereby improving the adsorption efficiency of the dust.

[0053] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spray foam desulfurization and dust removal device, comprising a housing (1); An intake pipe (2), fixedly installed on one side of the housing (1), for introducing dust-containing gas into the interior of the housing (1); A collection tank (3), arranged on the other side of the housing (1), for collecting dust in the gas and communicating with the bottom of the housing (1) through a collection pipe (5); A guide pipe (4), fixedly installed at the upper end of the collection tank (3) and communicating with the inner top of the housing (1) through a connecting pipe (6); A plurality of spray nozzles (23), fixedly installed at equal intervals along the circumferential direction on the inner wall of the housing (1), for spraying the dust-containing gas, and connected to a water supply device; characterized in that: A baffle (7) is fixedly installed inside the housing (1), a rotating shaft (9) is rotatably installed inside the baffle (7), a fan (10) is fixedly installed at the lower end of the rotating shaft (9), a plurality of bubble-forming openings (8) are equidistantly arranged inside the baffle (7), and a bubble-forming mechanism for generating bubbles in cooperation with the rotating shaft (9) is arranged inside the housing (1); the bubble-forming mechanism includes two groups of sliding grooves (16) opened inside the housing (1), a connecting rod (17) is slidably installed inside each group of sliding grooves (16), a clamping rod (13) is fixedly installed on the opposite side of the two connecting rods (17), a fixing ring (14) is fixedly installed between the two clamping rods (13), a plurality of fixing rods (18) are fixedly installed at equal intervals at the upper ends of the two clamping rods (13), and a brush strip that cooperates with the bubble-forming opening (8) and stores bubble-forming liquid is fixedly installed at the upper end of each fixing rod (18); A collar (11) is fixedly installed on the outer edge of the rotating shaft (9), a plurality of first magnets (12) are fixedly installed at equal intervals along the circumferential direction on the outside of the collar (11), and two second magnets (15) are symmetrically fixedly installed inside the fixing ring (14); The polarities of every two adjacent first magnets (12) are set to be opposite, and the polarities of the two second magnets (15) are also set to be opposite; A liquid storage bladder (19) is fixedly installed between the connecting rod (17) and the side wall of the sliding groove (16), one-way valves (20) are installed on both sides of the liquid storage bladder (19), liquid guide pipes (21) are opened inside the connecting rod (17) and the clamping rod (13), and the bottom of each brush strip extends into the liquid guide pipe (21); A liquid supply device for introducing bubble-forming liquid into the interior of the liquid storage bladder (19) is arranged outside the housing (1), one of the one-way valves (20) only allows the bubble-forming liquid to enter the interior of the liquid storage bladder (19), and the other one-way valve (20) only allows the bubble-forming liquid inside the liquid storage bladder (19) to enter the interior of the liquid guide pipe (21); The component of the bubble-forming liquid is a mixture of 8% detergent, 90% water and 2% glycerol; A plurality of bubble-breaking needles (22) are fixedly installed at equal intervals inside the guide pipe (4); An electric heating wire is fixedly installed inside each bubble-breaking needle (22); A controller is provided outside the housing (1), and the water supply device, the liquid supply device, and a plurality of heating wires are all electrically connected to the controller; The dusty gas will enter the inner top of the housing (1) through the foaming port (8) inside the baffle (7). The brush strip at the upper end of the fixing rod (18) will brush the accumulated foaming liquid on the bottom of the foaming port (8), so that bubbles can be formed when the gas flows through the foaming port (8). The bubbles will adsorb and gather the dust in the gas.

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