Waste gas treatment device for discharge port of pot-type calcining furnace

Abstract

The invention relates to the field of industrial waste gas treatment, in particular to a pot-type calcining furnace discharge port waste gas treatment device which comprises a flue gas purification pipe, a connecting mechanism is fixedly connected to the outer side of the flue gas purification pipe, a butt joint mechanism is fixedly connected to the top end of the flue gas purification pipe, and a cut-off mechanism is fixedly connected to one side of the butt joint mechanism. A control mechanism is installed on the side, away from the butt joint mechanism, of the cut-off mechanism, and an air supply mechanism is further fixedly connected to the outer side of the control mechanism. The butt joint mechanism, the connecting mechanism and other components are arranged, a drainage motor drives a drainage fan blade to rotate to form linkage with the flow guide effect of a connecting elbow, meanwhile, a filter screen is matched with a drainage base to filter waste gas, and a connecting support and a reinforcing support provide stable support for the butt joint mechanism; and the butt joint mechanism can efficiently drain waste gas in the flue gas purification pipe through rotation of the drainage fan blades.

Description

Technical Field

[0001] This invention relates to the field of industrial waste gas treatment, and in particular to a waste gas treatment device for the discharge port of a tank-type calcining furnace. Background Technology

[0002] During the discharge of calcined coke from a pot furnace, waste gas containing dust and sulfides is generated. Current treatment methods only utilize baghouse dust collectors to recover dust, achieving a dust removal rate of over 99.5%, but they cannot effectively collect and treat the sulfide gases. This type of sulfide waste gas is mainly composed of hydrogen sulfide (H2S), has a strong rotten egg odor, and can be detected by humans even at low concentrations. Concentrations exceeding 7 mg / m³ can cause discomfort and are highly toxic, polluting not only the surrounding environment but also endangering the health of operators.

[0003] Currently, existing technologies lack specific treatment processes and equipment for sulfide odors at the discharge port of canister calciners. Existing waste gas treatment systems can only recover dust and cannot solve the problem of odor diffusion, which seriously affects the production site and the surrounding environment. Furthermore, the system cannot achieve uniform flow guidance when recovering and treating flue gas, resulting in sedimentation and uneven delivery of flue gas, which will affect the normal combustion operation of the calciner during treatment. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a waste gas treatment device for the discharge port of a tank-type calcining furnace.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a waste gas treatment device for the discharge port of a tank-type calcining furnace, a purified flue gas pipe, a connecting mechanism fixedly connected to the outside of the purified flue gas pipe, a docking mechanism fixedly connected to the top of the purified flue gas pipe, a shut-off mechanism fixedly connected to one side of the docking mechanism, a control mechanism installed on the side of the shut-off mechanism away from the docking mechanism, and a gas supply mechanism fixedly connected to the outside of the control mechanism.

[0006] The connecting mechanism is used to install the docking mechanism, which is used to draw flue gas from inside the purified flue gas pipe. The shut-off mechanism is used to manually cut off and open the pipe. The control mechanism is used to electrically control the air intake volume. The gas supply mechanism is used to divert the gas.

[0007] Further: The connecting mechanism includes an overflow pipe, an overflow valve, a connecting bracket, a reinforcing bracket, and a preheating flue. The overflow pipe is fixedly installed at the front end of the purified flue gas pipe, and the overflow valve is fixedly installed on the outer wall of the overflow pipe. The overflow pipe is used to connect with external flue gas purification equipment. There are two connecting brackets, which are fixedly arranged in a linear array on the left and right sides of the rear end face of the purified flue gas pipe. The reinforcing bracket is fixedly installed on the inner side of the connecting bracket, and the preheating flue is fixedly installed at the top of the two connecting brackets.

[0008] Further: The docking mechanism includes a connecting bend, a mounting plate, a fixing bolt, a flow guide seat, a filter screen, a flow guide motor, and flow guide fan blades. The connecting bend is fixedly installed at the top end of the purified flue gas pipe. The mounting plate is fixedly installed at the bottom end and the left end of the connecting bend. The mounting plate is assembled to the top end of the purified flue gas pipe by the fixing bolt and communicates with the purified flue gas pipe. The flow guide seat is fixedly installed on the inner wall of the connecting bend. The filter screen is symmetrically fixedly installed on the left and right sides of the inner wall of the flow guide seat. The flow guide motor is fixedly installed on the outer side of the filter screen. The flow guide fan blades are fixedly installed on the outer wall of the output shaft of the flow guide motor.

[0009] Further: The shut-off mechanism includes a shut-off pipe, an assembly plate, a shut-off valve plate, and a manual valve. The shut-off pipe is bolted to one end of a connecting bend. The assembly plate is fixedly installed on the outer wall of the shut-off pipe. The shut-off valve plate is rotatably installed on the inner wall of the shut-off pipe. The manual valve is fixedly installed on the top of the shut-off valve plate.

[0010] Furthermore, the manual valve and the shut-off valve plate together form a structure for closing and opening the shut-off pipe, and the control mechanism also includes an airflow control pipe, an electric actuator, an electric fan plate, an unfolding push rod, and a telescopic pipe.

[0011] Further: The airflow control tube is fixedly installed at one end of the stop tube, the electric actuator is fixedly installed at the top of the airflow control tube, the electric air plate is rotatably installed inside the airflow control tube, the electric air plate is connected to the electric actuator, and there are two deployment push rods, which are symmetrically fixedly installed on the front and rear sides of the left end face of the airflow control tube.

[0012] Further: one end of the telescopic connector is fixedly installed on the outer wall of the airflow control pipe, the other end of the telescopic connector is fixedly connected to the air supply mechanism, and the unfolding push rod is connected to the air supply mechanism.

[0013] Further: The air supply mechanism includes an air supply pipe, a mounting frame, an adjusting motor, and a guide vane A. The air supply pipe is fixedly connected to the telescopic pipe. The mounting frame is fixedly installed at the front end of the air supply pipe. The adjusting motor is fixedly installed at the front end of the mounting frame. The guide vane A is rotatably installed on the inner wall of the air supply pipe.

[0014] Furthermore: the air guide plate A is connected to the output shaft of the adjusting motor, and the air supply mechanism also includes a transmission pulley and a transmission belt. There are two transmission pulleys, one of which is fixedly installed on the outer wall of the output shaft of the adjusting motor, and transmission belts are also installed on the outer side of the two transmission pulleys.

[0015] Furthermore, the air supply mechanism also includes a guide vane B, a transmission bevel gear, a mounting base plate, a transmission shaft, and a driven bevel gear. The guide vane B is also rotatably disposed inside the air supply pipe. The guide vane B is arranged horizontally, while the guide vane A is arranged vertically. The transmission bevel gear is coaxially fixedly disposed at the bottom end of the guide vane B. The mounting base plate is fixedly disposed at the bottom end of the air supply pipe. The transmission shaft is rotatably disposed inside the mounting base plate. The driven bevel gear is fixedly disposed on the outer wall of the transmission shaft and meshes with the transmission bevel gear for transmission. A transmission pulley is also installed at the front end of the transmission shaft.

[0016] The present invention has the following beneficial effects:

[0017] 1. Compared with existing technologies, this device, through the setting of docking and connecting mechanisms, uses a flow-guiding motor to drive the flow-guiding fan blades to rotate, which works in conjunction with the flow-guiding effect of the connecting bend. At the same time, the filter screen, together with the flow-guiding seat, filters the exhaust gas. The connecting bracket and the reinforcing bracket provide stable support for the docking mechanism, enabling the docking mechanism to efficiently guide the exhaust gas in the flue gas pipe through the rotation of the flow-guiding fan blades. Simultaneously, the filter screen removes impurities from the exhaust gas. This device can achieve the effect of smooth exhaust gas flow and preliminary purification simultaneously through the linkage of the docking and connecting mechanisms. It solves the problems of poor flue gas flow and impurity residue affecting subsequent treatment in existing technologies, and avoids the situation where impurities clog the pipes or affect the operation of subsequent purification equipment.

[0018] 2. Compared with existing technologies, this device, through the inclusion of control and shut-off mechanisms, uses an electric actuator to drive an electric fan plate to rotate and adjust the airflow. This is linked with the manual valve in the shut-off mechanism to control the opening and closing of the shut-off valve plate. Simultaneously, a telescopic connecting pipe ensures a sealed connection between the control and air supply mechanisms, and an extended push rod assists in adjusting the position of the air supply mechanism. This allows the control mechanism to precisely control the airflow through the rotation of the electric fan plate, while the shut-off mechanism can cut off the waste gas supply during maintenance via the shut-off valve plate. This device achieves controllable waste gas delivery and convenient maintenance through the coordinated operation of the control and shut-off mechanisms, solving the problems of inaccurate airflow adjustment and waste gas leakage during maintenance that plague existing technologies. It ensures airflow adaptability and operational safety during waste gas treatment.

[0019] 3. Compared with existing technologies, this device, by setting up components such as a gas supply mechanism and a control mechanism, and by adjusting the motor to drive the transmission pulley and transmission belt, drives the guide vane A and guide vane B to rotate synchronously. This, combined with the flexible connection of the telescopic pipe in the control mechanism, forms a linkage, enabling the gas supply mechanism to evenly distribute the waste gas through the horizontal and vertical dual guidance of guide vane A and guide vane B. The control mechanism, through the telescopic pipe, ensures the stable delivery of waste gas to the gas supply mechanism. This device can achieve the effect of even distribution and stable delivery of waste gas through the linkage and cooperation of the gas supply mechanism and the control mechanism, solving the problems of waste gas settling at the bottom and uneven distribution leading to insufficient subsequent treatment and affecting the normal combustion of the calcining furnace in existing technologies, thus improving the waste gas treatment efficiency and the operational stability of the calcining furnace. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the front view structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the combined structure of the connecting bend and the mounting plate of the present invention;

[0022] Figure 3 This is a schematic diagram of the combined structure of the airflow control tube and the electric actuator of the present invention;

[0023] Figure 4 This is a schematic diagram of the gas supply pipe and mounting bracket assembly structure of the present invention;

[0024] Figure 5 This is a schematic diagram of the combined structure of the transmission bevel gear and the driven bevel gear of the present invention;

[0025] Figure 6 This is a schematic diagram of the combined structure of the flue gas purification pipe and the overflow pipe of the present invention;

[0026] Figure 7 This is a schematic diagram of the left-side structure of the present invention;

[0027] Figure 8 For the present invention Figure 7 Enlarged structural diagram at point A in the middle.

[0028] Legend:

[0029] 1. Purified flue; 101. Overflow pipe; 1011. Overflow valve; 1012. Connecting bracket; 1013. Reinforcing bracket; 1014. Preheating flue; 2. Connecting bend; 201. Mounting plate; 2011. Fixing bolt; 2012. Drainage seat; 2013. Filter screen; 2014. Drainage motor; 2015. Drainage fan blade; 3. Shut-off pipe; 301. Assembly plate; 3011. Shut-off valve plate; 3012. Manual valve; 4. Air... Flow control pipe; 401, electric actuator; 4011, electric fan blade; 4012, unfolding push rod; 4013, telescopic pipe; 5, air supply pipe; 501, mounting bracket; 5011, adjusting motor; 5012, guide vane A; 5013, transmission pulley; 5014, transmission belt; 5015, guide vane B; 5016, transmission bevel gear; 5017, mounting base plate; 5018, transmission shaft; 5019, driven bevel gear. Detailed Implementation

[0030] Reference Figure 1 - Figure 8 The present invention provides a waste gas treatment device for the discharge port of a tank calciner: including a purified flue gas pipe 1, a connecting mechanism fixedly connected to the outside of the purified flue gas pipe 1, a docking mechanism fixedly connected to the top of the purified flue gas pipe 1, a shut-off mechanism fixedly connected to one side of the docking mechanism, a control mechanism installed on the side of the shut-off mechanism away from the docking mechanism, and a gas supply mechanism fixedly connected to the outside of the control mechanism.

[0031] The connecting mechanism is used to install the docking mechanism, which is used to draw flue gas from inside the purified flue gas pipe 1. The shut-off mechanism is used to manually cut off and open the pipe. The control mechanism is used to electrically control the air intake volume. The gas supply mechanism is used to divert the gas. By adopting the combined structure of purified flue gas pipe 1, connecting mechanism, docking mechanism, shut-off mechanism, control mechanism and gas supply mechanism, the functions of drawing, shutting off, controlling the air volume and diverting the exhaust gas at the discharge port of the tank calciner are realized, meeting the multi-stage operation requirements of exhaust gas treatment.

[0032] The connection mechanism includes an overflow pipe 101, an overflow valve 1011, a connecting bracket 1012, a reinforcing bracket 1013, and a preheating flue 1014. The overflow pipe 101 is fixedly installed at the front end of the purified flue gas pipe 1, and the overflow valve 1011 is fixedly installed on the outer wall of the overflow pipe 101. The overflow pipe 101 is used to connect to external flue gas purification equipment. Two connecting brackets 1012 are provided, and the two connecting brackets 1012 are fixedly arranged in a linear array on the left and right sides of the rear end face of the purified flue gas pipe 1. The reinforcing bracket 1013 is fixedly installed on the inner side of the connecting bracket 1012, and the preheating flue 1014 is fixedly installed on the top of the two connecting brackets 1012. By adopting the connecting mechanism composed of overflow pipe 101, overflow valve 1011, connecting bracket 1012, reinforcing bracket 1013 and preheating flue 1014, the connection with external flue gas purification equipment, the stable installation of the docking mechanism and the function of preheating exhaust gas are realized, thereby improving the connection reliability of the device and the pretreatment effect of exhaust gas treatment.

[0033] The docking mechanism includes a connecting bend 2, a mounting plate 201, a fixing bolt 2011, a flow guide seat 2012, a filter screen 2013, a flow guide motor 2014, and a flow guide fan blade 2015. The connecting bend 2 is fixedly installed at the top end of the purified flue gas pipe 1. The mounting plate 201 is fixedly installed at the bottom end and left end of the connecting bend 2. The mounting plate 201 is assembled to the top end of the purified flue gas pipe 1 by the fixing bolt 2011 and is in communication with the purified flue gas pipe 1. The flow guide seat 2012 is fixedly installed on the inner wall of the connecting bend 2. The filter screen 2013 is symmetrically fixed on the inner wall of the connecting bend 2. On the left and right sides of the inner wall of the diversion seat 2012, the diversion motor 2014 is fixedly installed on the outer side of the filter screen 2013, and the diversion fan blade 2015 is fixedly installed on the outer wall of the output shaft of the diversion motor 2014. By adopting the docking mechanism composed of the connecting bend 2, the mounting plate 201, the fixing bolt 2011, the diversion seat 2012, the filter screen 2013, the diversion motor 2014 and the diversion fan blade 2015, the function of efficiently diverting flue gas from the purified flue gas pipe 1 and filtering impurities is realized, which solves the problems of poor flue gas diversion and impurities affecting subsequent treatment.

[0034] The shut-off mechanism includes a shut-off pipe 3, an assembly plate 301, a shut-off valve plate 3011, and a manual valve 3012. The shut-off pipe 3 is bolted to one end of the connecting bend 2. The assembly plate 301 is fixedly installed on the outer wall of the shut-off pipe 3. The shut-off valve plate 3011 is rotatably installed on the inner wall of the shut-off pipe 3. The manual valve 3012 is fixedly installed on the top of the shut-off valve plate 3011. By using the shut-off mechanism composed of the shut-off pipe 3, the assembly plate 301, the shut-off valve plate 3011, and the manual valve 3012, the function of manually cutting off and opening the shut-off pipe 3 channel is realized, which facilitates the control of exhaust gas transportation during maintenance or special circumstances.

[0035] The manual valve 3012 and the shut-off valve plate 3011 together form the structure for closing and opening the shut-off pipe 3. The control mechanism also includes the airflow control pipe 4, the electric actuator 401, the electric air vane 4011, the unfolding push rod 4012, and the telescopic pipe 4013. By cooperating the manual valve 3012 and the shut-off valve plate 3011, and setting the control mechanism composed of the airflow control pipe 4, the electric actuator 401, the electric air vane 4011, the unfolding push rod 4012, and the telescopic pipe 4013, the functions of on / off control of the shut-off pipe 3 and electric adjustment of the air intake volume are realized, taking into account both the convenience of manual operation and the accuracy of airflow control.

[0036] The airflow control pipe 4 is fixedly installed at one end of the stop pipe 3. The electric actuator 401 is fixedly installed at the top of the airflow control pipe 4. The electric air vane 4011 is rotatably installed inside the airflow control pipe 4. The electric air vane 4011 is connected to the electric actuator 401. There are two deployment push rods 4012. The two deployment push rods 4012 are symmetrically fixed on the front and rear sides of the left end face of the airflow control pipe 4. By adopting the combined structure of the airflow control pipe 4, the electric actuator 401, the electric air vane 4011 and the two deployment push rods 4012, the functions of electric drive of the electric air vane 4011 to adjust the air volume and auxiliary connection of the air supply mechanism through the deployment push rods 4012 are realized, which improves the automation level of air volume control and the flexibility of mechanism connection.

[0037] One end of the telescopic connector 4013 is fixedly installed on the outer wall of the airflow control pipe 4, and the other end of the telescopic connector 4013 is fixedly connected to the air supply mechanism. The unfolding push rod 4012 is connected to the air supply mechanism. By adopting the structure of the guide vane B5015, the transmission bevel gear 5016, the mounting base plate 5017, the transmission shaft 5018 and the driven bevel gear 5019 cooperating with the original air supply mechanism components, the dual gas flow adjustment function of horizontal and vertical directions is realized, which solves the problem of uneven gas distribution caused by a single flow direction.

[0038] The air supply mechanism includes an air supply pipe 5, a mounting bracket 501, an adjusting motor 5011, and a guide vane A5012. The air supply pipe 5 is fixedly connected to the telescopic pipe 4013. The mounting bracket 501 is fixedly installed at the front end of the air supply pipe 5. The adjusting motor 5011 is fixedly installed at the front end of the mounting bracket 501. The guide vane A5012 is rotatably installed on the inner wall of the air supply pipe 5. By using the telescopic pipe 4013 to connect the airflow control pipe 4 and the air supply mechanism respectively, and the structure of the unfolding push rod 4012 to connect the air supply mechanism, the flexible connection and position adjustment function between the airflow control pipe 4 and the air supply mechanism are realized, and the installation error compensation problem when the two are connected is solved.

[0039] The air guide vane A5012 is connected to the output shaft of the adjusting motor 5011. The air supply mechanism also includes a transmission pulley 5013 and a transmission belt 5014. There are two transmission pulleys 5013. One of the transmission pulleys 5013 is fixedly installed on the outer wall of the output shaft of the adjusting motor 5011. The transmission belt 5014 is also installed on the outer side of the two transmission pulleys 5013. By adopting the air supply mechanism composed of the air supply pipe 5, the mounting bracket 501, the adjusting motor 5011 and the air guide vane A5012, the functions of gas diversion and flow direction adjustment are realized, and the rationality of gas diversion is improved.

[0040] The air supply mechanism also includes a guide vane B5015, a transmission bevel gear 5016, a mounting base plate 5017, a transmission shaft 5018, and a driven bevel gear 5019. The guide vane B5015 is rotatably mounted inside the air supply pipe 5. The guide vane B5015 is horizontally arranged, while the guide vane A5012 is vertically arranged. The transmission bevel gear 5016 is coaxially fixed to the bottom end of the guide vane B5015, the mounting base plate 5017 is fixed to the bottom end of the air supply pipe 5, and the transmission shaft 5018 is rotatably mounted inside the guide vane B5015. On the inner side of the mounting base plate 5017, the driven bevel gear 5019 is fixedly mounted on the outer wall of the transmission shaft 5018 and meshes with the transmission bevel gear 5016 for transmission. The front end of the transmission shaft 5018 is also equipped with a transmission pulley 5013. By using the transmission pulley 5013 and the transmission belt 5014 to adjust the structure of the motor 5011 and the guide vane A5012, the stable transmission of power of the motor 5011 is realized, ensuring the precise adjustment function of the guide vane A5012 and guaranteeing the consistency of gas flow.

[0041] Working Principle: During operation, the exhaust gas generated at the discharge port of the calciner is filtered through a bag filter and then flows into the purified flue gas pipe 1. The purified flue gas pipe 1 serves as the initial receiving component for exhaust gas treatment, providing a basic channel for subsequent operations. At this point, the connecting mechanism begins to operate. The overflow pipe 101, in conjunction with the overflow valve 1011, establishes a stable connection with the external flue gas purification equipment. The overflow valve 1011 can flexibly control the flow between the overflow pipe 101 and the external equipment according to actual exhaust gas treatment needs, ensuring that exhaust gas can be delivered to the external purification equipment through the overflow pipe 101 when needed. Auxiliary processing is performed. Meanwhile, the two connecting brackets 1012 in the connecting mechanism are fixed in a linear array on the left and right sides of the rear end face of the purification flue gas pipe 1, providing stable support for the installation of the docking mechanism. The reinforcing bracket 1013 is fixed inside the connecting bracket 1012, further enhancing the structural strength of the connecting bracket 1012 and preventing the docking mechanism from becoming loose due to vibration or other factors during operation. In addition, the preheating flue 1014 fixed at the top of the two connecting brackets 1012 will preheat the exhaust gas entering the purification flue gas pipe 1, creating more suitable treatment conditions for subsequent exhaust gas filtration, diversion and other processes through preheating.

[0042] After the exhaust gas has undergone initial preheating within the purified flue gas pipe 1, the docking mechanism starts and begins to perform exhaust gas diversion and filtration operations. The diversion motor 2014 in the docking mechanism starts first, its output shaft rotates, driving the diversion fan blades 2015 fixed to the outer wall of the output shaft to rotate synchronously. During the rotation of the diversion fan blades 2015, a negative pressure suction is generated. Under the guiding effect of the connecting bend 2, the exhaust gas in the purified flue gas pipe 1 is efficiently diverted to the interior of the connecting bend 2. Mounting plates 201 are fixed to the bottom and left ends of the connecting bend 2. The mounting plates 201 are tightly fitted to the top of the purified flue gas pipe 1 by fixing bolts 2011. This connection method not only ensures the connection... The connection between the bend 2 and the flue gas purification pipe 1 is maintained, which can effectively prevent the leakage of exhaust gas at the connection. At the same time, the flow guide seat 2012 fixed to the inner wall of the bend 2 provides an installation carrier for the filter screen 2013. The filter screen 2013 is symmetrically fixed on the left and right sides of the inner wall of the flow guide seat 2012. When the exhaust gas flows through the flow guide seat 2012, the filter screen 2013 will filter the dust and other impurities contained in the exhaust gas, preventing impurities from entering the subsequent mechanism and causing pipe blockage or affecting the treatment effect. Through the synergistic action of components such as the flow guide motor 2014, the flow guide fan blade 2015, the connecting bend 2, and the filter screen 2013, the efficient flow of exhaust gas and the initial impurity filtration are achieved.

[0043] The filtered exhaust gas then enters the shut-off pipe 3 of the shut-off mechanism. This mechanism is primarily used for manual control of the exhaust gas delivery channel, allowing for management of exhaust gas delivery during equipment maintenance or special operating conditions. The shut-off pipe 3 is tightly bolted to one end of the connecting bend 2, ensuring smooth flow of exhaust gas from the connecting bend 2 into the shut-off pipe 3. The mounting plate 301 fixed to the outer wall of the shut-off pipe 3 enhances its structural stability and prevents deformation during long-term use. When it is necessary to open or close the exhaust gas passage, the operator can manually rotate the valve fixed to the shut-off pipe. The manual valve 3012 at the top of the plate 3011 rotates, causing the stop valve plate 3011 to rotate synchronously on the inner wall of the stop pipe 3. When the stop valve plate 3011 rotates to a state perpendicular to the axis of the stop pipe 3, the channel of the stop pipe 3 is closed, and the exhaust gas cannot continue to be conveyed forward. When the stop valve plate 3011 rotates to a state parallel to the axis of the stop pipe 3, the channel of the stop pipe 3 is opened, and the exhaust gas can flow smoothly into the subsequent control mechanism. Through the cooperation of the manual valve 3012 and the stop valve plate 3011, flexible control of the exhaust gas conveying channel is achieved.

[0044] When the shut-off pipe 3 is open, and the exhaust gas flows smoothly into the airflow control pipe 4 of the control mechanism, the control mechanism begins to perform airflow adjustment and connection auxiliary operations. The electric actuator 401 in the control mechanism is fixed at the top of the airflow control pipe 4. After the electric actuator 401 is started, it drives the electric fan plate 4011 connected to it to rotate inside the airflow control pipe 4. By adjusting the rotation angle of the electric fan plate 4011, the cross-sectional area of ​​the channel inside the airflow control pipe 4 can be flexibly changed, thereby achieving precise adjustment of the airflow to adapt to the airflow requirements of exhaust gas treatment under different working conditions. At the same time, two unfolding push rods 4 are symmetrically fixed on the front and rear sides of the left end face of the airflow control pipe 4. 012, the extension push rod 4012 can flexibly adjust its telescopic length according to the installation position and angle of the air supply mechanism, and assist in adjusting the relative position between the air supply mechanism and the airflow control pipe 4 to ensure that the two can be accurately connected. In addition, one end of the telescopic pipe 4013 is fixed on the outer wall of the airflow control pipe 4, and the other end of the telescopic pipe 4013 is fixedly connected to the air supply mechanism. The telescopic pipe 4013 has a certain degree of flexibility and telescopicity, which not only ensures the sealing of the connection between the airflow control pipe 4 and the air supply mechanism to prevent exhaust gas leakage, but also adapts to the positional changes between the two when the extension push rod 4012 is adjusted, ensuring that the exhaust gas can be stably delivered to the air supply mechanism.

[0045] After the exhaust gas enters the gas supply pipe 5 of the gas supply mechanism through the telescopic pipe 4013, the gas supply mechanism begins to divert and guide the exhaust gas. The mounting bracket 501 in the gas supply mechanism is fixed to the front end of the gas supply pipe 5, providing stable mounting support for the adjusting motor 5011. After the adjusting motor 5011 is started, its output shaft begins to rotate and drives a transmission pulley 5013 fixed to the outer wall of the output shaft to rotate synchronously. Since transmission belts 5014 are installed on the outer sides of the two transmission pulleys 5013, the transmission... Driven by the belt 5014, another pulley 5013 also rotates. This pulley 5013 is fixed to the front end of the drive shaft 5018. Therefore, driven by the pulley 5013, the drive shaft 5018 begins to rotate inside the mounting plate 5017. The mounting plate 5017 is fixed to the bottom end of the air supply pipe 5, providing stable support for the rotation of the drive shaft 5018. When the drive shaft 5018 rotates, the driven bevel gear 5019 fixed to its outer wall also rotates synchronously. The driven bevel gear 5019 rotates, and the transmission bevel gear 5016, which is coaxially fixed at the bottom end of the guide vane B5015, meshes with each other. Under the action of meshing transmission, the transmission bevel gear 5016 drives the guide vane B5015 to rotate inside the air supply pipe 5. At the same time, the output shaft of the motor 5011 directly drives the guide vane A5012 to rotate on the inner wall of the air supply pipe 5. Since the guide vane A5012 is arranged longitudinally and the guide vane B5015 is arranged laterally, when the two rotate synchronously, they can provide air supply. The exhaust gas entering the gas supply pipe 5 is guided by both horizontal and vertical diversion, making the exhaust gas more evenly distributed within the gas supply pipe 5. After being diverted and guided, the exhaust gas is then transported through the gas supply pipe 5 to the subsequent deep treatment stage, thus completing the entire treatment process of the exhaust gas from the discharge port of the calciner. By transporting the collected clean flue gas (about 70%-80%) to the preheating flue 1014, the unburned volatiles are completely burned using the high temperature of the flue, and sulfides are converted into SO2, while also supplementing heat for the preheating process.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A waste gas treatment device for the discharge port of a calcining furnace, comprising a purified flue gas pipe (1), characterized in that: A connecting mechanism is fixedly connected to the outside of the purified flue gas pipe (1), a docking mechanism is fixedly connected to the top of the purified flue gas pipe (1), a shut-off mechanism is fixedly connected to one side of the docking mechanism, a control mechanism is installed on the side of the shut-off mechanism away from the docking mechanism, and a gas supply mechanism is fixedly connected to the outside of the control mechanism. The connecting mechanism is used to install the docking mechanism, the docking mechanism is used to draw flue gas from the inside of the flue gas purification pipe (1), the shut-off mechanism is used to manually cut off and open the pipe, the control mechanism is used to electrically control the air intake volume, and the gas supply mechanism is used to divert the gas.

2. The waste gas treatment device for the discharge port of a tank-type calcining furnace according to claim 1, characterized in that: The connecting mechanism includes an overflow pipe (101), an overflow valve (1011), a connecting bracket (1012), a reinforcing bracket (1013), and a preheating flue (1014). The overflow pipe (101) is fixedly installed at the front end of the flue gas purification pipe (1). The overflow valve (1011) is fixedly installed on the outer wall of the overflow pipe (101). The overflow pipe (101) is used to connect with external flue gas purification equipment. There are two connecting brackets (1012). The two connecting brackets (1012) are fixedly installed in a linear array on the left and right sides of the rear end face of the flue gas purification pipe (1). The reinforcing bracket (1013) is fixedly installed on the inner side of the connecting bracket (1012). The preheating flue (1014) is fixedly installed at the top of the two connecting brackets (1012).

3. The waste gas treatment device for the discharge port of a tank-type calcining furnace according to claim 1, characterized in that: The docking mechanism includes a connecting bend (2), a mounting plate (201), a fixing bolt (2011), a flow guide seat (2012), a filter screen (2013), a flow guide motor (2014), and flow guide fan blades (2015). The connecting bend (2) is fixedly installed at the top of the purified flue gas pipe (1), and the mounting plate (201) is fixedly installed at the bottom and left end of the connecting bend (2). The mounting plate (201) is connected by the fixing bolt (2011). The flow guide seat (2012) is fixedly installed on the inner wall of the connecting bend (2) and is connected to the flue gas purifier (1). The filter screen (2013) is symmetrically fixed on the left and right sides of the inner wall of the flow guide seat (2012). The flow guide motor (2014) is fixedly installed on the outer side of the filter screen (2013). The flow guide fan blade (2015) is fixedly installed on the outer wall of the output shaft of the flow guide motor (2014).

4. The waste gas treatment device for the discharge port of a tank-type calcining furnace according to claim 1, characterized in that: The shut-off mechanism includes a shut-off pipe (3), an assembly plate (301), a shut-off valve plate (3011), and a manual valve (3012). The shut-off pipe (3) is bolted to one end of the connecting bend (2). The assembly plate (301) is fixedly installed on the outer wall of the shut-off pipe (3). The shut-off valve plate (3011) is rotatably installed on the inner wall of the shut-off pipe (3). The manual valve (3012) is fixedly installed on the top of the shut-off valve plate (3011).

5. The waste gas treatment device for the discharge port of a tank-type calcining furnace according to claim 4, characterized in that: The manual valve (3012) and the shut-off valve plate (3011) together form the closing and opening structure for the shut-off pipe (3). The control mechanism also includes the airflow control pipe (4), the electric actuator (401), the electric air plate (4011), the unfolding push rod (4012), and the telescopic pipe (4013).

6. The waste gas treatment device for the discharge port of a tank-type calcining furnace according to claim 5, characterized in that: The airflow control pipe (4) is fixedly installed at one end of the stop pipe (3), the electric actuator (401) is fixedly installed at the top of the airflow control pipe (4), the electric air plate (4011) is rotatably installed inside the airflow control pipe (4), the electric air plate (4011) is connected to the electric actuator (401), and there are two deployment push rods (4012). The two deployment push rods (4012) are symmetrically fixedly installed on the front and rear sides of the left end face of the airflow control pipe (4).

7. The waste gas treatment device for the discharge port of a tank-type calcining furnace according to claim 5, characterized in that: One end of the telescopic connector (4013) is fixedly installed on the outer wall of the airflow control pipe (4), and the other end of the telescopic connector (4013) is fixedly connected to the air supply mechanism. The unfolding push rod (4012) is connected to the air supply mechanism.

8. The waste gas treatment device for the discharge port of a tank-type calcining furnace according to claim 1, characterized in that: The gas supply mechanism includes a gas supply pipe (5), a mounting bracket (501), an adjusting motor (5011), and a guide vane A (5012). The gas supply pipe (5) is fixedly connected to the telescopic pipe (4013). The mounting bracket (501) is fixedly installed at the front end of the gas supply pipe (5). The adjusting motor (5011) is fixedly installed at the front end of the mounting bracket (501). The guide vane A (5012) is rotatably installed on the inner wall of the gas supply pipe (5).

9. The waste gas treatment device for the discharge port of a tank-type calcining furnace according to claim 8, characterized in that: The air guide plate A (5012) is connected to the output shaft of the adjusting motor (5011). The air supply mechanism also includes a transmission pulley (5013) and a transmission belt (5014). There are two transmission pulleys (5013). One of the transmission pulleys (5013) is fixedly installed on the outer wall of the output shaft of the adjusting motor (5011). The transmission belts (5014) are also installed on the outer side of the two transmission pulleys (5013).

10. The waste gas treatment device for the discharge port of a tank-type calcining furnace according to claim 1, characterized in that: The air supply mechanism also includes a guide vane B (5015), a transmission bevel gear (5016), a mounting base plate (5017), a transmission shaft (5018), and a driven bevel gear (5019). The guide vane B (5015) is also rotatably disposed inside the air supply pipe (5). The guide vane B (5015) is arranged horizontally, while the guide vane A (5012) is arranged vertically. The transmission bevel gear (5016) is coaxially fixed. At the bottom end of the air guide plate B (5015), the mounting base plate (5017) is fixedly set at the bottom end of the air supply pipe (5), the transmission shaft (5018) is rotatably set on the inner side of the mounting base plate (5017), the driven bevel gear (5019) is fixedly set on the outer wall of the transmission shaft (5018) and meshes with the transmission bevel gear (5016) for transmission, and the front end of the transmission shaft (5018) is also equipped with a transmission pulley (5013).

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