Kiln waste gas purifying and recycling device and using method thereof

Abstract

The invention belongs to the technical field of waste gas recycling, and discloses a kiln waste gas purifying and recycling device and a using method thereof.The kiln waste gas purifying and recycling device comprises a recycling tank, the top end of the recycling tank is fixedly communicated with a filtering tank, and the position, close to the bottom end, of the outer side face of the recycling tank is fixedly communicated with a flow dividing opening; a porous ceramic filter is mounted in the filtering tank through bolts, a ceiling is arranged at the top end of the filtering tank, and a cleaning ring is movably clamped in the recycling tank. According to the invention, by utilizing the pressure when waste gas is input, part of waste gas can be guided into the adjusting assembly while the waste gas is guided into the adjusting assembly to be filtered and is used as power for pushing the cleaning ring to move upwards, the interior of the recovery tank is actively cleaned through the active displacement of the cleaning ring, the whole process is automatically completed, and the cleaning efficiency is improved. And automatic cleaning can be achieved after waste gas is input, manual control is not needed, active cleaning can be achieved every time purification is conducted, and the recovery efficiency is remarkably improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of waste gas recovery, and specifically relates to a kiln waste gas purification and recovery device and a use method thereof. Background Art

[0002] Kiln exhaust gas is a type of exhaust gas generated during the operation of kiln equipment in industrial production, especially in the fields of ceramics, glass, metallurgy, and chemicals. Kilns usually use fuels such as coal, natural gas, and heavy oil for combustion, which will produce exhaust gas during the combustion process, including sulfur dioxide (SO2), nitrogen oxides (NOx), carbon monoxide (CO), carbon dioxide (CO2), and particulate matter (PM). In the kiln, the raw materials will undergo chemical reactions at high temperatures to produce exhaust gas. These exhaust gases may contain toxic and harmful substances, such as heavy metals and dioxins. In order to reduce pollution to the environment during the emission of kiln exhaust gas, recycling equipment is often used to recycle it.

[0003] Conventional waste gas recycling devices for kiln are mainly used to filter and recycle waste gas. However, since the waste gas contains more harmful substances, a large amount of dust will adhere to the inner wall of the recovery pipe after a period of use. At the same time, external dust will also enter the interior of the device when the recovery pipe is not in use, resulting in a decrease in recovery efficiency and quality.

[0004] At the same time, when recycling kiln exhaust gas, since the exhaust gas contains a lot of heat, this heat will be directly discharged into the air after filtration, resulting in heat waste. The heat cannot be effectively utilized and improvement is urgently needed. Summary of the invention

[0005] The purpose of the present invention is to provide a kiln exhaust gas purification and recovery device and a method of using the same to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: A kiln waste gas purification and recycling device, including a recovery tank, the top of the recovery tank is fixedly communicated with a filtration tank, a diversion port is fixedly communicated at a position near the bottom end of the outer side of the recovery tank, a porous ceramic filter is installed inside the filtration tank by bolts, a ceiling is provided at the top of the filtration tank, a cleaning ring is movably clamped inside the recovery tank, the cleaning ring moves up and down relative to the recovery tank, a heat exchange tube is provided inside the recovery tank, a power assembly is provided on one side of the filtration tank, one end of the power assembly close to the filtration tank is fixedly communicated with a three-way valve, the top end of the heat exchange tube sequentially penetrates the top end of the porous ceramic filter and one side of the filtration tank and is fixedly communicated with the three-way valve, the rear end of the three-way valve is communicated with an external water pump, the end of the diversion port away from the recovery tank is fixedly communicated with an adjustment assembly, a mounting plate is fixedly installed at the top of the adjustment assembly, and the top of the mounting plate is connected to the bottom end of the power assembly. Cold water is filled inside the heat exchange tube.

[0007] Before use, the bottom end of the recovery tank needs to be communicated with the exhaust end of the kiln, and at the same time, the rear end of the three-way valve is communicated with an external water pump. At the same time, in the initial state, the bottom end of the ceiling is in contact with the top end of the filtration tank, and cold water needs to be injected into the heat exchange tube through the three-way valve. The height of the cold water liquid level shall not be higher than the height of the filtration tank. At this time, the device is in an unpurified and unrecovered state.

[0008] As a further technical solution of the present invention, a card slot is opened on the outer side of the recovery tank near the top end, a baffle is movably clamped inside the card slot, the top end of the baffle is connected to the bottom end of the mounting plate, and one end of the mounting plate away from the adjustment assembly is connected to the top end of the cleaning ring.

[0009] As a further technical solution of the present invention, an inclined plane is opened on the outer side of the cleaning ring, and the inclined plane is in contact with the inner wall of the recovery tank.

[0010] In the initial state, that is, when the device is in an unpurified and unrecovered state, at this time, the cleaning ring is at the lowest point position, and at the same time, the baffle can block the side of the card slot, and at the same time, the adjustment assembly is in the initial state.

[0011] As a further technical solution of the present invention, the adjustment assembly includes a temporary storage pipe, the bottom end of the temporary storage pipe is fixedly communicated with an air delivery hose, and the end of the air delivery hose away from the temporary storage pipe is fixedly communicated with the diversion port.

[0012] As a further technical solution of the present invention, a piston plate is movably sleeved inside the temporary storage pipe. The top end of the piston plate is fixedly connected to a piston rod. The top end of the piston rod penetrates through the top end of the temporary storage pipe and is connected to the bottom end of the mounting plate. A limiting spring is movably sleeved on the outer side of the piston rod. The upper and lower ends of the limiting spring are respectively connected to the top end of the inner cavity of the temporary storage pipe and the top end of the piston plate.

[0013] When purifying and recycling the waste gas of the kiln, at this time, the waste gas can enter the device through the recovery tank and be filtered by the porous ceramic filter. At the same time, part of the waste gas can enter the inside of the gas transmission hose through the diversion port and enter the inside of the temporary storage pipe. At this time, the piston plate rises accordingly and drives the piston rod to displace upward. At this time, the limiting spring is compressed. At the same time, the mounting plate rises accordingly. At this time, the baffle plate rises synchronously until it drives the cleaning ring to displace upward. At this time, the outer side of the cleaning ring can contact the inner wall of the recovery tank to initially clean the inner wall of the recovery tank.

[0014] By utilizing the pressure when the waste gas is input, that is, when the waste gas is introduced into the device for filtration, part of the waste gas can be introduced into the inside of the adjustment component and used as the power to drive the cleaning ring to displace upward. Through the active displacement of the cleaning ring, the inside of the recovery tank can be actively cleaned. The whole process is automatically completed and can be automatically cleaned after the waste gas is input without manual control. It can achieve active cleaning during each purification, significantly improving the recovery efficiency.

[0015] As a further technical solution of the present invention, extension rods are fixedly installed on the front and rear sides of the top end of the cleaning ring. The front and rear sides of the bottom end of the ceiling are connected to the top ends of the extension rods. When the cleaning ring is at the lowest point, the bottom end of the ceiling contacts the top end of the filter tank.

[0016] In the initial state, that is, when the device is not purifying and recycling, at this time, the cleaning ring is at the lowest point, and at the same time, the extension rods and the ceiling are also at the lowest point. At this time, the ceiling can block the top end of the filter tank to prevent external pollutants from entering the inside of the device and maintain the activity of the porous ceramic filter.

[0017] When the device is in the purification and recycling state, since the upward displacement of the cleaning ring can synchronously drive the extension rods to displace upward, at this time, the ceiling moves upward accordingly. At this time, the top end of the filter tank is exposed accordingly, and the purified gas is discharged through the top end of the filter tank, completing the automatic control process.

[0018] By reusing the input of the waste gas, that is, while temporarily storing a part of the waste gas through the adjustment component to realize the automatic upward movement of the cleaning ring, the automatic upward movement of the ceiling can also be realized, enabling the purified gas to be automatically discharged. At the same time, it can automatically prevent external dust from entering when not purified, effectively preventing the pollution of the porous ceramic filter and significantly improving the overall purification quality.

[0019] As a further technical solution of the present invention, the power assembly includes a fixed seat, the bottom end of the fixed seat is connected to the top end of the mounting plate, one end of the fixed seat away from the mounting plate is movably connected with a first connecting rod through a rotating shaft, and one end of the first connecting rod away from the fixed seat is movably connected with a second connecting rod through a rotating shaft.

[0020] As a further technical solution of the present invention, the power assembly further includes a power tank, a gas transmission pipe is fixedly communicated with the left side of the power tank, one side of the gas transmission pipe away from the power tank is communicated with one end of a three-way valve, an exhaust pipe is fixedly communicated with the side of the gas transmission pipe away from the power tank, and a main shaft is movably installed in the middle of the power tank.

[0021] As a further technical solution of the present invention, an impeller located inside the power tank is fixedly sleeved on the outer side of the main shaft, an electromagnetic clutch located on one side of the power tank is fixedly installed at one end of the main shaft, and the output end of the electromagnetic clutch is connected to one side of the second connecting rod.

[0022] At the same time, the waste gas entering the inside of the recovery tank can exchange heat with the cold water inside the heat exchange pipe. While reducing the temperature of the waste gas, the cold water inside the heat exchange pipe can be heated. The steam generated by the boiling cold water can enter the inside of the gas transmission pipe through the three-way valve and is finally discharged through the exhaust pipe for secondary utilization;

[0023] When the recovery tank needs to be deeply cleaned at the same time, the electromagnetic clutch can be changed to the engaged state. At this time, the main shaft drives the second connecting rod to swing, and drives the first connecting rod to swing, and applies an upward pulling force and a downward pushing force to the mounting plate. At this time, the cleaning ring reciprocates up and down, and deeply cleans the inner wall of the recovery tank through friction.

[0024] By utilizing the heat contained in the waste gas, the heat in the waste gas is absorbed through heat exchange and then used for secondary utilization. At the same time, the generated water vapor can drive the cleaning ring to reciprocate up and down, serving as the power for deeply cleaning the inner wall of the recovery tank. The whole process does not require external energy assistance, and the inner wall of the recovery tank can be deeply cleaned in a state of non-stop operation, reducing the maintenance difficulty and further improving the recovery efficiency.

[0025] A usage method of a kiln waste gas purification and recovery device includes the following steps:

[0026] S1: Before recovering and purifying the kiln waste gas, it is necessary to connect the bottom end of the recovery tank to the smoke outlet of the kiln. The waste gas can enter the inside of the device through the recovery tank, and is discharged after being filtered and adsorbed by the porous ceramic filter. At the same time, part of the waste gas can enter the inside of the adjustment component through the shunt port;

[0027] S2: When the waste gas enters the temporary storage pipe, it can push the piston plate to move upward. At this time, the piston rod moves upward accordingly, driving the mounting plate and the baffle plate to move upward. At this time, the cleaning ring moves upward accordingly, completing the preliminary cleaning of the inner wall of the recovery tank. At the same time, the extension rod and the ceiling rise accordingly, and the waste gas can be filtered through the porous ceramic filter and discharged from the top of the filter tank;

[0028] S3: At the same time, during the waste gas recycling process, the external water pump can be turned on to introduce cold water into the internal heat exchange tube through the three-way valve. At the same time, the heat exchange tube can absorb the heat of the waste gas and heat it until the cold water inside the heat exchange tube boils to generate steam. At this time, the steam can be discharged through the exhaust pipe and utilized;

[0029] S4: When the inner wall of the recovery tank needs to be deeply cleaned, the electromagnetic clutch can be turned on to control the combination of the second connecting rod and the main shaft. At this time, the water vapor can push the impeller to rotate, until driving the second connecting rod and the first connecting rod to swing. At this time, the mounting plate moves up and down reciprocally, and finally drives the cleaning ring to move up and down reciprocally relative to the inner wall of the recovery tank, completing the deep cleaning process.

[0030] The beneficial effects of the present invention are as follows:

[0031] (1) By utilizing the pressure when the waste gas is input, that is, while the waste gas is introduced into the device for filtration, part of the waste gas can be introduced into the adjustment component and used as the power to push the cleaning ring to move upward. Through the active displacement of the cleaning ring, the inside of the recovery tank is actively cleaned. The whole process is automatically completed and can be automatically cleaned after the waste gas is input, without manual control, and can achieve active cleaning during each purification, significantly improving the recovery efficiency.

[0032] (2) By utilizing the heat contained in the waste gas, the heat in the waste gas is absorbed through heat exchange and then reused. At the same time, the generated water vapor can push the cleaning ring to move up and down reciprocally, serving as the power for the deep cleaning of the inner wall of the recovery tank. The whole process does not require external energy assistance and can achieve the deep cleaning of the inner wall of the recovery tank in a non-stop state, reducing the maintenance difficulty and further improving the recovery efficiency.

[0033] (3) By reusing the input of the waste gas, that is, while temporarily storing a part of the waste gas through the adjustment component to realize the automatic rise of the cleaning ring, it can also realize the automatic rise of the ceiling, enabling the purified gas to be automatically discharged. At the same time, it can automatically prevent external dust from entering when not purified, effectively preventing the pollution of the porous ceramic filter and significantly improving the overall purification quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0035] Figure 2 Schematic cross-sectional view of the internal structure of the present invention;

[0036] Figure 3 Schematic cross-sectional view of the internal structure of the adjustment component of the present invention;

[0037] Figure 4 Schematic diagram of the cooperation between the porous ceramic filter and the heat exchange tube structure of the present invention;

[0038] Figure 5 Schematic diagram of the cooperation between the three-way valve, the heat exchange tube and the power component structure of the present invention;

[0039] Figure 6 Schematic diagram of the cooperation between the three-way valve and the heat exchange tube structure of the present invention;

[0040] Figure 7 Separate cross-sectional view of the power component structure of the present invention.

[0041] In the figure: 1, recovery tank; 2, filtration tank; 3, porous ceramic filter; 4, ceiling; 5, extension rod; 6, shunt port; 7, three-way valve; 8, heat exchange tube; 9, power component; 901, fixed seat; 902, first connecting rod; 903, second connecting rod; 904, power tank; 905, gas transmission pipe; 906, exhaust pipe; 907, main shaft; 908, impeller; 909, electromagnetic clutch; 10, cleaning ring; 11, card slot; 12, mounting plate; 13, baffle; 14, adjustment component; 141, temporary storage pipe; 142, piston plate; 143, piston rod; 144, limit spring; 145, gas transmission hose. Detailed implementation manners

[0042] 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.

[0043] Such as Figures 1 to 7As shown, in an embodiment of the present invention, a device for purifying, recycling and utilizing waste gas from a kiln furnace includes a recovery tank 1. The top of the recovery tank 1 is fixedly communicated with a filter tank 2. A diversion port 6 is fixedly communicated at a position near the bottom of the outer side of the recovery tank 1. A porous ceramic filter 3 is installed inside the filter tank 2 by bolts. A ceiling 4 is provided at the top of the filter tank 2. A cleaning ring 10 is movably clamped inside the recovery tank 1, and the cleaning ring 10 moves up and down relative to the recovery tank 1. A heat exchange tube 8 is provided inside the recovery tank 1. A power assembly 9 is provided on one side of the filter tank 2. One end of the power assembly 9 close to the filter tank 2 is fixedly communicated with a three-way valve 7. The top of the heat exchange tube 8 sequentially penetrates through the top of the porous ceramic filter 3 and one side of the filter tank 2 and is fixedly communicated with the three-way valve 7. The rear end of the three-way valve 7 is communicated with an external water pump. One end of the diversion port 6 away from the recovery tank 1 is fixedly communicated with an adjustment assembly 14. A mounting plate 12 is fixedly installed at the top of the adjustment assembly 14. The top of the mounting plate 12 is connected to the bottom of the power assembly 9. Cold water is filled inside the heat exchange tube 8.

[0044] Before use, the bottom of the recovery tank 1 needs to be communicated with the exhaust end of the kiln furnace. At the same time, the rear end of the three-way valve 7 is communicated with an external water pump. At the same time, in the initial state, the bottom of the ceiling 4 is in contact with the top of the filter tank 2, and cold water needs to be injected into the heat exchange tube 8 through the three-way valve 7. The height of the cold water liquid level shall not be higher than the height of the filter tank 2. At this time, the device is in an unpurified and unrecovered state.

[0045] As Figure 1 and Figure 2 As shown, a card slot 11 is opened on the outer side of the recovery tank 1 near the top. A baffle 13 is movably clamped inside the card slot 11. The top of the baffle 13 is connected to the bottom of the mounting plate 12. One end of the mounting plate 12 away from the adjustment assembly 14 is connected to the top of the cleaning ring 10. An inclined surface is opened on the outer side of the cleaning ring 10, and the inclined surface is in contact with the inner wall of the recovery tank 1.

[0046] In the initial state, that is, when the device is in an unpurified and unrecovered state, at this time, the cleaning ring 10 is at the lowest point position. At the same time, the baffle 13 can block the side of the card slot 11. At the same time, the adjustment assembly 14 is in the initial state.

[0047] As Figure 1 and Figure 2 and Figure 3As shown in the figure, the adjusting assembly 14 includes a storage pipe 141. The bottom end of the storage pipe 141 is fixedly communicated with an air delivery hose 145. One end of the air delivery hose 145 away from the storage pipe 141 is fixedly communicated with the shunt port 6. A piston plate 142 is movably sleeved inside the storage pipe 141. The top end of the piston plate 142 is fixedly connected with a piston rod 143. The top end of the piston rod 143 penetrates through the top end of the storage pipe 141 and is connected to the bottom end of the mounting plate 12. A limiting spring 144 is movably sleeved on the outer side of the piston rod 143. The upper and lower ends of the limiting spring 144 are respectively connected to the top end of the inner cavity of the storage pipe 141 and the top end of the piston plate 142.

[0048] Embodiment: When purifying and recycling the waste gas of the kiln, at this time, the waste gas can enter the device through the recovery tank 1 and be filtered by the porous ceramic filter 3. At the same time, part of the waste gas can enter the inside of the air delivery hose 145 through the shunt port 6 and enter the inside of the storage pipe 141. At this time, the piston plate 142 rises accordingly and drives the piston rod 143 to displace upward. At this time, the limiting spring 144 is compressed. At the same time, the mounting plate 12 rises accordingly. At this time, the baffle 13 rises synchronously until it drives the cleaning ring 10 to displace upward. At this time, the outer side of the cleaning ring 10 can contact the inner wall of the recovery tank 1 to preliminarily clean the inner wall of the recovery tank 1.

[0049] By utilizing the pressure when the waste gas is input, that is, when the waste gas is introduced into the device for filtration, part of the waste gas can be introduced into the adjusting assembly 14 and used as the power to drive the cleaning ring 10 to displace upward. The inner part of the recovery tank 1 is actively cleaned through the active displacement of the cleaning ring 10. The whole process is automatically completed and can be automatically cleaned after the waste gas is input without manual control. The active cleaning can be realized during each purification, significantly improving the recovery efficiency.

[0050] As Figure 2 and Figure 4 shown in the figure, extension rods 5 are fixedly installed on the front and rear sides of the top end of the cleaning ring 10. The front and rear sides of the bottom end of the ceiling 4 are connected to the top ends of the extension rods 5. When the cleaning ring 10 is at the lowest point, the bottom end of the ceiling 4 contacts the top end of the filter tank 2.

[0051] In the initial state, that is, when the device is not purifying and recycling, at this time, the cleaning ring 10 is at the lowest point. At the same time, the extension rods 5 and the ceiling 4 are also at the lowest point. At this time, the ceiling 4 can block the top end of the filter tank 2 to prevent external pollutants from entering the inside of the device and keep the activity of the porous ceramic filter 3.

[0052] When the device is in the state of purifying and recycling, since the upward displacement of the cleaning ring 10 can synchronously drive the extension rods 5 to displace upward, at this time, the ceiling 4 moves upward accordingly. At this time, the top end of the filter tank 2 is exposed accordingly, and the purified gas is discharged through the top end of the filter tank 2 to complete the automatic control process.

[0053] By reusing the input of the waste gas, that is, by adjusting the component 14 to temporarily store a part of the waste gas, while the cleaning ring 10 automatically rises, the ceiling 4 can also be automatically raised, so that the purified gas is automatically discharged. At the same time, when it is not purified, it can automatically prevent external dust from entering, effectively preventing the pollution of the porous ceramic filter 3 and significantly improving the overall purification quality.

[0054] Such as Figure 4 and Figure 5 as well as Figure 6 and Figure 7 As shown, the power component 9 includes a fixed seat 901. The bottom end of the fixed seat 901 is connected to the top end of the mounting plate 12. One end of the fixed seat 901 away from the mounting plate 12 is movably connected with a first connecting rod 902 through a rotating shaft. One end of the first connecting rod 902 away from the fixed seat 901 is movably connected with a second connecting rod 903 through a rotating shaft. The power component 9 further includes a power tank 904. The left side of the power tank 904 is fixedly communicated with an air delivery pipe 905. One side of the air delivery pipe 905 away from the power tank 904 is communicated with one end of a three-way valve 7. The air delivery pipe 905 away from the power tank 904 is fixedly communicated with an exhaust pipe 906. A main shaft 907 is movably installed in the middle of the power tank 904. An impeller 908 located inside the power tank 904 is fixedly sleeved on the outer side of the main shaft 907. One end of the main shaft 907 is fixedly installed with an electromagnetic clutch 909 located on one side of the power tank 904. The output end of the electromagnetic clutch 909 is connected to one side of the second connecting rod 903.

[0055] Embodiment: The waste gas that enters the recovery tank 1 at the same time can exchange heat with the cold water inside the heat exchange pipe 8. While reducing the temperature of the waste gas, the cold water inside the heat exchange pipe 8 can be heated. The steam generated by the boiled cold water can enter the inside of the air delivery pipe 905 through the three-way valve 7 and is finally discharged through the exhaust pipe 906 for secondary utilization;

[0056] When the recovery tank 1 needs to be deeply cleaned at the same time, the electromagnetic clutch 909 can be changed to the engaged state. At this time, the main shaft 907 drives the second connecting rod 903 to swing, and drives the first connecting rod 902 to swing, and applies an upward pulling force and a downward pushing force to the mounting plate 12. At this time, the cleaning ring 10 reciprocates up and down, and deeply cleans the inner wall of the recovery tank 1 through the friction effect.

[0057] By utilizing the heat contained in the waste gas, the heat in the waste gas is absorbed through the heat exchange effect for secondary utilization. At the same time, the generated water vapor can drive the cleaning ring 10 to reciprocate up and down, serving as the power for deeply cleaning the inner wall of the recovery tank 1. The whole process does not require external energy assistance, and the inner wall of the recovery tank 1 can be deeply cleaned in a non-stop state, reducing the maintenance difficulty and further improving the recovery efficiency.

[0058] A method for using a device for purifying, recycling and utilizing kiln waste gas, comprising the following steps:

[0059] S1: Before recovering and purifying the kiln waste gas, it is necessary to connect the bottom end of the recovery tank 1 to the smoke exhaust port of the kiln. The waste gas can enter the interior of the device through the recovery tank 1, and after being filtered and adsorbed by the porous ceramic filter 3, it is discharged. At the same time, part of the waste gas can enter the interior of the adjustment component 14 through the shunt port 6;

[0060] S2: When the waste gas enters the temporary storage pipe 141, it can push the piston plate 142 to move upward. At this time, the piston rod 143 moves upward accordingly, driving the mounting plate 12 and the baffle 13 to move upward. At this time, the cleaning ring 10 moves upward accordingly, completing the preliminary cleaning of the inner wall of the recovery tank 1. At the same time, the extension rod 5 and the ceiling 4 rise, and the waste gas can be filtered by the porous ceramic filter 3 and discharged from the top of the filter tank 2;

[0061] S3: At the same time, during the process of recovering and utilizing the waste gas, the external water pump can be turned on to introduce cold water into the interior of the heat exchange tube 8 through the three-way valve 7. At the same time, the heat exchange tube 8 can absorb the heat of the waste gas and be heated until the cold water in the heat exchange tube 8 boils to generate steam. At this time, the steam can be discharged through the exhaust pipe 906 and utilized;

[0062] S4: When it is necessary to deeply clean the inner wall of the recovery tank 1, the electromagnetic clutch 909 can be turned on to control the combination of the second connecting rod 903 and the main shaft 907. At this time, the water vapor can push the impeller 908 to rotate, until the second connecting rod 903 and the first connecting rod 902 swing. At this time, the mounting plate 12 moves up and down reciprocally, and finally drives the cleaning ring 10 to move up and down reciprocally relative to the inner wall of the recovery tank 1, completing the deep cleaning process.

[0063] 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 kiln waste gas purification and recycling device, comprising a recovery tank (1), characterized in that: The top of the recovery tank (1) is fixedly connected to a filter tank (2); a diversion port (6) is fixedly connected to the outer side of the recovery tank (1) near the bottom; a porous ceramic filter (3) is installed inside the filter tank (2) by bolts; a ceiling (4) is provided at the top of the filter tank (2); a cleaning ring (10) is movably connected inside the recovery tank (1); the cleaning ring (10) moves up and down relative to the recovery tank (1); a heat exchange tube (8) is provided inside the recovery tank (1); a power assembly (9) is provided on one side of the filter tank (2); the power assembly (9) is close to the filter tank (2); One end near the filter tank (2) is fixedly connected to a three-way valve (7); the top end of the heat exchange tube (8) passes through the top end of the porous ceramic filter (3) and one side of the filter tank (2) in sequence and is fixedly connected to the three-way valve (7); the rear end of the three-way valve (7) is connected to an external water pump; the end of the diversion port (6) away from the recovery tank (1) is fixedly connected to an adjustment component (14); a mounting plate (12) is fixedly installed on the top end of the adjustment component (14); the top end of the mounting plate (12) is connected to the bottom end of the power component (9); and the interior of the heat exchange tube (8) is filled with cold water.

2. The kiln exhaust gas purification and recycling device according to claim 1 is characterized in that: The recovery tank (1) is provided with a slot (11) on its outer side surface near the top, a baffle (13) is movably engaged inside the slot (11), the top end of the baffle (13) is connected to the bottom end of the mounting plate (12), and the end of the mounting plate (12) away from the adjustment assembly (14) is connected to the top end of the cleaning ring (10).

3. The kiln exhaust gas purification and recycling device according to claim 2 is characterized in that: The outer side surface of the cleaning ring (10) is provided with a chamfered surface, and the chamfered surface is in contact with the inner wall of the recovery tank (1).

4. The kiln exhaust gas purification and recycling device according to claim 3 is characterized in that: The regulating assembly (14) comprises a temporary storage tube (141), the bottom end of which is fixedly connected to a gas delivery hose (145), and one end of the gas delivery hose (145) away from the temporary storage tube (141) is fixedly connected to the diversion port (6).

5. The kiln exhaust gas purification and recycling device according to claim 4 is characterized in that: The temporary storage tube (141) is movably sleeved with a piston plate (142), and the top end of the piston plate (142) is fixedly connected with a piston rod (143). The top end of the piston rod (143) passes through the top end of the temporary storage tube (141) and is connected to the bottom end of the mounting plate (12). The outer side surface of the piston rod (143) is movably sleeved with a limit spring (144), and the upper and lower ends of the limit spring (144) are respectively connected to the top end of the inner cavity of the temporary storage tube (141) and the top end of the piston plate (142).

6. The kiln exhaust gas purification and recycling device according to claim 5 is characterized in that: Extension rods (5) are fixedly mounted on both the front and rear sides of the top of the cleaning ring (10), and the front and rear sides of the bottom of the ceiling (4) are connected to the top of the extension rods (5). When the cleaning ring (10) is at the lowest point, the bottom of the ceiling (4) contacts the top of the filter tank (2).

7. The kiln exhaust gas purification and recycling device according to claim 6 is characterized in that: The power assembly (9) comprises a fixed seat (901), the bottom end of the fixed seat (901) is connected to the top end of the mounting plate (12), the end of the fixed seat (901) away from the mounting plate (12) is movably connected to a first connecting rod (902) via a rotating shaft, and the end of the first connecting rod (902) away from the fixed seat (901) is movably connected to a second connecting rod (903) via a rotating shaft.

8. The kiln exhaust gas purification and recycling device according to claim 7 is characterized in that: The power assembly (9) further comprises a power tank (904), the left side of the power tank (904) being fixedly connected to an air supply pipe (905), the side of the air supply pipe (905) away from the power tank (904) being connected to one end of a three-way valve (7), the side of the air supply pipe (905) away from the power tank (904) being fixedly connected to an exhaust pipe (906), and a main shaft (907) being movably mounted in the middle of the power tank (904).

9. The kiln exhaust gas purification and recycling device according to claim 8, characterized in that: The outer side surface of the main shaft (907) is fixedly sleeved with an impeller (908) located inside the power tank (904), and one end of the main shaft (907) is fixedly installed with an electromagnetic clutch (909) located on one side of the power tank (904), and the output end of the electromagnetic clutch (909) is connected to one side of the second connecting rod (903).

10. The method for using the kiln exhaust gas purification and recycling device according to claim 9, characterized in that: The following steps are involved: S1: Before recycling and purifying the kiln exhaust gas, the bottom end of the recovery tank (1) needs to be connected to the exhaust port of the kiln. The exhaust gas can enter the interior of the device through the recovery tank (1) and be filtered and adsorbed by the porous ceramic filter (3) before being discharged. At the same time, part of the exhaust gas can enter the interior of the regulating component (14) through the diversion port (6); S2: When the exhaust gas enters the temporary storage pipe (141), the piston plate (142) can be pushed to move upward, and the piston rod (143) moves upward accordingly, driving the mounting plate (12) and the baffle plate (13) to move upward. At this time, the cleaning ring (10) moves upward accordingly, completing the preliminary cleaning of the inner wall of the recovery tank (1). At the same time, the extension rod (5) and the ceiling (4) rise accordingly, and the exhaust gas can be filtered through the porous ceramic filter (3) and discharged from the top of the filter tank (2); S3: During the waste gas recovery and utilization process, cold water can be introduced into the heat exchange tube (8) through the three-way valve (7) by turning on the external water pump. At the same time, the heat exchange tube (8) can absorb the heat of the waste gas and heat it until the cold water inside the heat exchange tube (8) boils and generates steam. At this time, the steam can be discharged through the exhaust pipe (906) and utilized. S4: When the inner wall of the recovery tank (1) needs to be deeply cleaned, the electromagnetic clutch (909) can be turned on to control the connection between the second connecting rod (903) and the main shaft (907). At this time, the water vapor can drive the impeller (908) to rotate until the second connecting rod (903) and the first connecting rod (902) are driven to swing. At this time, the mounting plate (12) moves up and down accordingly, and finally drives the cleaning ring (10) to move up and down relative to the inner wall of the recovery tank (1), completing the deep cleaning process.

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