Tail gas recovery equipment for silicon carbide smelting

Abstract

The invention relates to the technical field of tail gas treatment, and discloses silicon carbide smelting tail gas recovery equipment which comprises an equipment main body, and the interior of the equipment main body is divided into three functional cabins: a neutralizing cabin on the left side, a leaching cabin in the middle and a drying cabin on the right side; the bottom of the equipment main body is provided with an adjusting insert penetrating through the neutralizing cabin, the leaching cabin and the drying cabin, two ends of the adjusting insert adopt three-fork division bar structures, a bidirectional transmission mechanism is connected between the three-fork division bar structures, and a power conversion mechanism is assembled between the lower part of the bidirectional transmission mechanism and the annular channel; an air inlet transmission group is mounted on the side close to the neutralization reactor, and waste discharge linkage groups are arranged on the left side and the right side of the bottom; according to the linkage design, seamless switching of functional modes is achieved through the single driving source adjusting plug-in, efficient purification during gas treatment is guaranteed, accurate control over waste liquid discharge is achieved, and energy consumption and maintenance cost are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of tail gas treatment, and more particularly to a tail gas recovery device for silicon carbide smelting. Background Art

[0002] During the industrial smelting process of silicon carbide, a large amount of waste gas containing harmful components such as CO, SO2, NO, and dust is generated. To meet environmental protection requirements, tail gas recovery equipment is usually used to treat the waste gas. For example, the patent with the publication number CN216654024U discloses a tail gas recovery device for silicon carbide smelting, including a reaction chamber, a treatment tank, and a purifier. A detector is provided on the right side of the treatment tank, and the detection head of the detector extends into the exhaust pipe to monitor the purity of the tail gas. A circulation pipe is connected to the lower side of the exhaust pipe. When the detector detects that the purity of the tail gas does not meet the standard, the gas flows back to the treatment tank through the circulation pipe and reacts with the spraying liquid again to improve the reaction adequacy until the purity of the tail gas reaches the set standard.

[0003] However, the existing technology still has the following defects:

[0004] Low contact efficiency between gas and spraying liquid: The tail gas enters the treatment tank in a free diffusion manner, with a relatively small contact area with the spraying liquid, resulting in a low reaction rate and poor purification effect.

[0005] Low utilization rate of spraying liquid: Due to uneven gas diffusion, some spraying liquid fails to fully participate in the reaction, causing waste of resources, which does not meet the requirements of green environmental protection and sustainable development.

[0006] Therefore, there is an urgent need for an improved tail gas recovery device for silicon carbide smelting to improve the gas-liquid reaction efficiency, reduce the waste of spraying liquid, and enhance the tail gas purification effect. Summary of the Invention

[0007] In order to overcome the above defects of the prior art, the present invention provides a tail gas recovery device for silicon carbide smelting to solve the problems of low contact efficiency between gas and spraying liquid and low utilization rate of spraying liquid existing in the above background art.

[0008] The present invention provides the following technical solution: An exhaust gas recovery device for silicon carbide smelting, including a device main body, whose front and rear side walls are installed with sealed side plates, and the interior is divided into three functional compartments: the left side is a neutralization compartment, the middle is a rinsing compartment, and the right side is a drying compartment; a neutralization reactor is assembled in the neutralization compartment, and a drying device is installed in the drying compartment; a liquid storage compartment is arranged on the upper layer of the rinsing compartment and a spray assembly extending to the rinsing compartment is installed. There is a transportation interlayer between the device main body and the sealed side plate, which is respectively communicated with the bottom of the rinsing compartment and the top of the liquid storage compartment to construct an annular channel, and a liquid circulation and conveying assembly is configured in the annular channel; an adjustment plug penetrating through the neutralization compartment, the rinsing compartment and the drying compartment is arranged at the bottom of the device main body, both ends of which adopt a three-pronged partition bar structure and a two-way transmission mechanism is connected between the two, and a power conversion mechanism is assembled between the lower part of the two-way transmission mechanism and the annular channel; two sets of auxiliary systems are arranged in the rinsing compartment: an air intake transmission group is installed on the side close to the neutralization reactor, and waste discharge linkage groups are arranged on the left and right sides of the bottom.

[0009] The two-way transmission mechanism is composed of a central rotating shaft, a sliding coupling, a power input gear and a positioning bracket: among them, a power input gear drivingly connected with the power conversion mechanism is coaxially installed at the center of the central rotating shaft, and positioning brackets are symmetrically arranged on both sides of the power input gear, and the front and rear ends thereof are fixed to the inner wall of the rinsing compartment; the central rotating shaft vertically penetrates the positioning bracket and is rotatably connected thereto through a bearing, and sliding couplings are respectively slidably assembled at the left and right ends thereof, and the sliding couplings are connected with the adjustment plug.

[0010] Further, the air intake transmission group is composed of a lower transmission wheel, a cruising transmission wheel, a synchronous belt, a wind wheel and an installation base. Among them, the installation base is fixedly installed on the side wall of the rinsing compartment, the lower transmission wheel and the cruising transmission wheel are respectively rotatably connected to the upper and lower ends of the installation base through bearings and are drivingly connected by a synchronous belt, the cruising transmission wheel and the wind wheel are coaxially installed, and the positioning bracket is arranged at the air intake position of the rinsing compartment.

[0011] Further, the waste discharge linkage group is composed of an inclined cutting transmission wheel, a top push rod, a sealing plug and a second spring. Among them, the inclined cutting transmission wheel is installed inside the rinsing compartment and its shaft end is rotatably connected to the inner side wall of the compartment body. The inclined cutting transmission wheel is located at the rightmost position of the moving stroke of the sliding coupling and an inclined cutting surface is arranged on its outer side; the top push rod movably penetrates the side wall of the rinsing compartment and forms a contact fit with the inclined cutting surface; the bottom of the sealing plug is hermetically inserted and blocked at the waste discharge port of the rinsing compartment and is elastically connected to the outer wall of the device main body through a second spring.

[0012] Further, the lower transmission wheel adopts a structure with a pulley groove in the middle and integrally formed convex rib edges in the circumferential direction. Among them, the left and right end faces of the convex rib edges are processed by arc chamfering. The circumferential direction of the inclined cutting transmission wheel is also integrally formed with convex rib edges, and the end face of the convex rib edge is processed by arc chamfering.

[0013] Furthermore, the sliding coupling is composed of a guiding sleeve, an elastic engaging head and a first spring; wherein, the inner wall of the guiding sleeve is provided with integrally formed guiding ribs, which form an embedded fit with the slide rails on the surface of the central rotating shaft. The guiding sleeve adopts an integrally formed structure of a large tube and a small tube. The large tube is circumferentially provided with a receiving cavity, and the elastic engaging head is telescopically arranged in the receiving cavity through the first spring. The elastic engaging head adopts a hollow structure, and its left and right end faces are processed with arc chamfers.

[0014] Furthermore, the neutralization reactor is composed of a double-chamber housing, a baffle plate, a gas guiding connecting pipe and a gas source interface. Among them, the double-chamber housing is the core structure of the neutralization chamber. The central part inside it is a reaction chamber, and the gas guiding chambers are symmetrically arranged on the front and rear sides to form a double-channel layout; a plurality of misaligned and stacked baffle plates are vertically arranged in the reaction chamber. The baffle plate adopts a design with the middle part tilted upward, and the end is provided with a specific elevation angle; the adjacent baffle plates on the same side are connected to the gas guiding chambers through the gas guiding connecting pipes to form a gas diffusion network; corresponding openings are respectively provided at the bottoms of the gas guiding chamber and the reaction chamber, and these openings are connected to an external gas source through the gas source interface. The gas source interface corresponding to the gas guiding chamber is connected to the reaction gas source, and the gas source interface corresponding to the reaction chamber is connected to the tail gas source.

[0015] Furthermore, a drying device is installed in the drying chamber. An opening is provided at the bottom of the drying device. The regulating plug is inserted into the three-way partition strip of the neutralization chamber, and gas path control ports respectively communicating with the gas guiding chamber and the reaction chamber are provided. And the gas path control ports connecting to the drying device are provided on the three-way partition strip inserted into the drying chamber.

[0016] Furthermore, the gas path control port for opening and closing the gas guiding chamber is longer in length design than the gas path control port of the reaction chamber. The regulating plug can be connected to a push-pull device assembled outside the equipment main body. The push-pull device can be a telescopic cylinder structure. Guide grooves for the regulating plug to pass through are provided at the front and rear ends of the positioning bracket.

[0017] Furthermore, a liquid circulation and conveying assembly is provided in the annular channel formed by the equipment main body and the sealing side plate. The liquid circulation and conveying assembly is composed of track side plates, transfer chains and transfer hoppers. The track side plates are symmetrically arranged on the left and right sides of the annular channel. Transfer chains are slidably assembled in each track side plate. A plurality of transfer hoppers are evenly arranged between the two transfer chains along the movement track. Both ends of the transfer hopper are installed on the side walls of the transfer chain.

[0018] Furthermore, the power conversion mechanism is composed of a transmission main shaft, a driven gear and a driving gear. The driven gears are coaxially assembled at both ends of the transmission main shaft, and the driven gears are engaged with the transfer chains; a guiding slot for the movement of the driven gear is provided in the middle of the track side plate, and a driving gear is installed in the middle of the surface of the transmission main shaft; the driven gear penetrates through the side wall of the rinsing chamber, and its outer extending end is power-connected to the driving device. The technical effects and advantages of the present invention:

[0019] 1. The present invention is provided with an adjustment plug-in, which is conducive to the innovative design of the adjustment plug-in of the three-way partition strip linkage mechanism and its gas path control port. Through a single push-pull action, the gas path switching and the opening and closing of the exhaust port can be synchronously controlled, ensuring the accurate guidance of the reaction gas and the tail gas, effectively preventing the leakage of unpurified gas, and significantly improving the system sealing performance and operation reliability.

[0020] 2. The present invention is provided with a bidirectional transmission mechanism, an intake transmission group and a waste discharge linkage group, which is conducive to the adjustment plug-in realizing dual-mode switching through horizontal movement: when moving to the left, the three-way partition strips at both ends drive the sliding coupling to slide and spin along the central rotating shaft, form a transmission through the sliding coupling and the lower transmission wheel, and drive the wind wheel to rotate and generate turbulence, significantly increasing the gas-liquid contact area and the impurity removal efficiency; when moving to the right, the sliding coupling disengages from the lower transmission wheel and rotates to the side of the bevel-cut transmission wheel, and drives the top push rod to swing intermittently through bevel surface transmission, realizing the periodic opening and closing of the sealing plug, and forming a slow-release discharge mechanism for the leaching solution; this linkage design realizes seamless switching of the function mode through a single drive source of the adjustment plug-in, ensuring both efficient purification during gas treatment and precise control of waste liquid discharge, and reducing energy consumption and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 It is of the present invention Figure 1 The structural schematic diagram after removing the sealing side plate and the top cover in

[0023] Figure 3 It is of the present invention Figure 2 The structural schematic diagram of the structure and its partial section in

[0024] Figure 4 It is of the present invention Figure 3 The further disassembled schematic diagram of the structure in

[0025] Figure 5 It is of the present invention Figure 4 The structural schematic diagram at position A in

[0026] Figure 6 It is a schematic diagram of the transmission structure of the liquid circulation and delivery assembly and the power conversion mechanism of the present invention.

[0027] Figure 7 It is of the present invention Figure 3 The local part of the structure and its further sectional schematic diagram in

[0028] Figure 8 It is of the present invention Figure 7 The structural schematic diagram at position B in

[0029] Figure 9Schematic diagram of the bidirectional transmission mechanism of the present invention and its partial sectional structure.

[0030] Figure 10 Of the present invention Figure 9 Schematic diagram of the structure at position C in

[0031] Reference numerals are: 1, equipment main body; 2, sealing side plate; 3, top cover; 4, adjusting plug-in; 401, gas path control port; 5, liquid circulation and transportation assembly; 501, track side plate; 502, transfer chain; 503, transfer hopper; 6, spraying assembly; 601, grid conveying pipe; 602, atomizing nozzle; 603, reflux pump; 7, neutralization reactor; 701, double-chamber housing; 702, guide plate; 703, gas conduction connecting pipe; 704, gas source interface; 8, drying device; 9, power conversion mechanism; 901, transmission main shaft; 902, driven gear; 903, driving gear; 10, bidirectional transmission mechanism; 1001, central rotating shaft; 1002, sliding coupling; 10021, guiding sleeve; 10022, elastic meshing head; 10023, first spring; 1003, power input gear; 1004, positioning bracket; 11, intake air transmission group; 1101, lower transmission wheel; 1102, cruise transmission wheel; 1103, synchronous belt; 1104, wind wheel; 1105, mounting base; 12, waste discharge linkage group; 1201, bevel cutting transmission wheel; 1202, top push rod; 1203, sealing plug; 1204, second spring. Detailed implementation manners

[0032] The technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. In addition, the forms of the various structures described in the following embodiments are merely examples, and a tail gas recovery device for silicon carbide smelting related to the present invention is not limited to the various structures described in the following embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0033] Refer to Figures 1-10, the present invention provides an exhaust gas recovery device for silicon carbide smelting, including a device main body 1, whose front and rear side walls are hermetically covered and installed with sealing side plates 2, and the interior is divided into three functional compartments: the left side is a neutralization compartment, the middle is a washing compartment, and the right side is a drying compartment; a neutralization reactor 7 is assembled in the neutralization compartment, and a drying device 8 is installed in the drying compartment; a liquid storage compartment is arranged on the upper layer of the washing compartment and a spraying assembly 6 extending to the washing compartment is installed; there is a transportation interlayer between the device main body 1 and the sealing side plates 2, which are respectively communicated with the bottom of the washing compartment and the top of the liquid storage compartment to construct an annular channel, and a liquid circulation and transportation assembly 5 is configured in the annular channel; an adjustment plug-in 4 penetrating through the neutralization compartment, the washing compartment and the drying compartment is arranged at the bottom of the device main body 1, both ends of which adopt a three-fork partition structure and a bidirectional transmission mechanism 10 is connected between the two, and a power conversion mechanism 9 is assembled between the lower part of the bidirectional transmission mechanism 10 and the annular channel; two sets of auxiliary systems are arranged in the washing compartment: an air intake transmission group 11 is installed on the side close to the neutralization reactor 7, and waste discharge linkage groups 12 are arranged on the left and right sides at the bottom.

[0034] In this embodiment, it should be specifically noted that the neutralization reactor 7 is composed of a double-chamber shell 701, a guide plate 702, a gas guide and communication pipe 703 and a gas source interface 704. Among them, the double-chamber shell 701 is the core structure of the neutralization compartment, with a reaction chamber in the center of its interior, and gas guide chambers are symmetrically arranged on the front and rear sides to form a double-channel layout; a plurality of misaligned and stacked guide plates 702 are vertically arranged in the reaction chamber. Among them, the guide plate 702 adopts a design with the middle part tilted upward, and the end is provided with a specific elevation angle to ensure that an upward rippling effect is generated when the air flow is discharged along the surface of the guide plate 702; adjacent guide plates 702 on the same side are connected through the gas guide and communication pipe 703 to communicate the gas guide chambers, forming a gas diffusion network; corresponding openings are respectively arranged at the bottoms of the gas guide chamber and the reaction chamber, and these openings are connected to an external gas source through the gas source interface 704. Among them, the gas source interface 704 corresponding to the gas guide chamber is connected to the reaction gas source, and the gas source interface 704 corresponding to the reaction chamber is connected to the tail gas discharge source;

[0035] A drying device 8 is installed in the drying compartment. The drying device 8 can be configured with an electric heater or a dehumidifying device; an opening is provided at the bottom of the drying device 8 in a counterpoint manner, forming a vertically penetrating structure with the gas source interface 704 on the bottom wall of the drying compartment, so that the wet gas after washing and purification passes through the drying device 8 for deep drying treatment, and finally dry and purified gas meeting the emission standards is output;

[0036] The gas path control port 401, which is provided on the three-way partition strip inserted into the neutralization chamber by the adjustment plug 4, can communicate with the gas guide chamber and the reaction chamber respectively. While the gas path control port 401, which is provided on the three-way partition strip inserted into the drying chamber, can connect to the drying device 8. The opening and closing state of the gas source interface 704 is accurately regulated by the horizontal displacement of the adjustment plug 4, synchronously realizing the dual functions of gas path switching and isolation. Among them, the gas path control port 401 for opening and closing the gas guide chamber is designed to be longer in length than the gas path control port 401 of the reaction chamber, ensuring the priority supply of reaction gas, creating a prerequisite for the neutralization reaction, and taking the lead in cutting off the exhaust gas supply at the end of the working cycle, so as to achieve precise management of the gas path with controllable timing.

[0037] The adjustment plug 4 can be connected to a push-pull device assembled outside the equipment main body 1. The push-pull device can be a telescopic cylinder structure (including but not limited to reciprocating moving mechanisms such as hydraulic cylinders, pneumatic cylinders or electric push rods), providing stable power output for the horizontal reciprocating movement of the adjustment plug 4.

[0038] The spray assembly 6 is composed of a grid conveying pipe 601, atomizing nozzles 602 and a reflux pump 603. Among them, the grid conveying pipe 601 is installed inside the liquid storage tank, and its water outlet is connected to the atomizing nozzles 602 distributed in a matrix on the bottom wall of the liquid storage tank. The reflux pump 603 is also arranged in the liquid storage tank, its drainage end is connected to the grid conveying pipe 601, and its water pumping end extends to the bottom area of the liquid storage tank, forming a complete liquid circulation path.

[0039] The top cover 3 is installed on the top of the liquid storage tank by a detachable structure. This component not only forms a protective barrier for the inside of the liquid storage tank, but also has a water injection port opened on its top wall, facilitating rapid replenishment operation when the liquid level in the liquid storage tank is insufficient.

[0040] In this article, all the positional relationships regarding front, back, left and right discussed are based on Figures 1-4 the presented perspective for definition. These azimuth descriptions do not have actual geographical or physical meanings. They are just a reference framework set to help readers more intuitively understand the content in the article. In this way, we can more clearly show the relative positional relationships between various parts, making the entire discussion process easier to understand and follow. Please note that this self-defined azimuth identification is only applicable for internal use in this article and does not represent any absolute direction or position in the real world.

[0041] Refer to Figures 4-10, a liquid circulation and transportation assembly 5 is provided in the annular channel formed by the equipment main body 1 and the sealed side plate 2. The liquid circulation and transportation assembly 5 is composed of a track side plate 501, a transfer chain 502, and a transfer hopper 503. Among them, the track side plates 501 are symmetrically arranged on the left and right sides of the annular channel. A transfer chain 502 is slidably assembled in each track side plate 501. A plurality of transfer hoppers 503 are evenly arranged between the two transfer chains 502 along the movement track. Both ends of the transfer hopper 503 are installed on the side wall of the transfer chain 502; when the transfer hopper 503 runs to the horizontal working position, the transfer hopper 503 located above the liquid storage tank is in a downward inclined posture, while the transfer hopper 503 at the bottom of the rinsing tank is in an upward inclined posture; or at least ensure that the transfer hopper 503 remains horizontal when it reaches above the liquid storage tank or at the bottom of the rinsing tank; this design enables the transfer hopper 503 to effectively receive the sprayed liquid at the bottom of the rinsing tank. After being circulated and transported through the transportation interlayer, the liquid is finally unloaded back into the liquid storage tank to complete the circulation process;

[0042] The power conversion mechanism 9 is composed of a transmission main shaft 901, a driven gear 902, and a driving gear 903. Among them, driven gears 902 are coaxially assembled at both ends of the transmission main shaft 901. The driven gear 902 and the transfer chain 502 achieve power transmission through the meshing surface; a guiding slot for the movement of the driven gear 902 is provided in the middle of the track side plate 501. At the same time, a driving gear 903 is installed in the middle of the surface of the transmission main shaft 901, which can also be used to drive the transmission mechanism of the bidirectional transmission mechanism 10; the driven gear 902 penetrates the side wall of the rinsing tank, and its outer extended end is power-connected to the driving device; the driving device preferably adopts a power mechanism such as a servo motor that can precisely control the torque output;

[0043] The bidirectional transmission mechanism 10 is composed of a central rotating shaft 1001, a sliding coupling 1002, a power input gear 1003, and a positioning bracket 1004: Among them, a power input gear 1003 that is transmitted with the power conversion mechanism 9 is coaxially installed at the center of the central rotating shaft 1001. Specifically, the power input gear 1003 meshes with the driving gear 903 for power transmission; positioning brackets 1004 are symmetrically arranged on both sides of the power input gear 1003, and their front and rear ends are fixed to the inner wall of the rinsing tank; the central rotating shaft 1001 vertically penetrates the positioning bracket 1004 and is rotatably connected to it through a bearing. Sliding couplings 1002 are slidably assembled at both the left and right ends of the central rotating shaft 1001. The sliding coupling 1002 is connected to the adjusting plug-in 4 to form a linkage;

[0044] The intake transmission group 11 is composed of a lower transmission wheel 1101, a cruise transmission wheel 1102, a synchronous belt 1103, a wind wheel 1104 and a mounting base 1105. Among them, the mounting base 1105 is fixedly installed on the side wall of the flushing cabin. The lower transmission wheel 1101 and the cruise transmission wheel 1102 are respectively rotatably connected to the upper and lower ends of the mounting base 1105 through bearings and are connected by a synchronous belt 1103 to achieve transmission connection. The cruise transmission wheel 1102 and the wind wheel 1104 are coaxially installed. The positioning bracket 1004 is arranged at the intake port of the flushing cabin.

[0045] The waste discharge linkage group 12 is composed of an inclined cutting transmission wheel 1201, a top push rod 1202, a sealing plug 1203 and a second spring 1204. Among them, the inclined cutting transmission wheel 1201 is installed inside the flushing cabin and its shaft end is rotatably connected to the inner side wall of the cabin body. The inclined cutting transmission wheel 1201 is located at the rightmost position of the moving stroke of the sliding coupling 1002 and an inclined cutting surface is arranged on its outer side. The top push rod 1202 penetrates the side wall of the flushing cabin in a movable manner and forms a contact fit with the inclined cutting surface. The bottom of the sealing plug 1203 blocks the waste discharge port of the flushing cabin by a sealing plugging method and is elastically connected to the outer wall of the equipment main body 1 through the second spring 1204.

[0046] In this embodiment, it should be specifically noted that guiding grooves for adjusting the penetration of the plug-in 4 are provided at the front and rear ends of the positioning bracket 1004. The functions of the positioning bracket 1004 are: accurately positioning the spatial position of the central rotating shaft 1001; ensuring the meshing transmission stability between the power input gear 1003 and the driving gear 903; ensuring that the central rotating shaft 1001 can effectively transmit the torque load it bears.

[0047] The sliding coupling 1002 is composed of a guiding sleeve 10021, an elastic meshing head 10022 and a first spring 10023. Among them, guiding ribs are integrally formed on the inner wall of the guiding sleeve 10021, and the guiding ribs form an embedded fit with the sliding rails on the surface of the central rotating shaft 1001 to achieve horizontal sliding guidance. The guiding sleeve 10021 adopts an integrally formed structure of a large and a small tube body. An accommodating cavity is circumferentially opened in the large tube body, and the elastic meshing head 10022 is telescopically arranged in the accommodating cavity through the first spring 10023. Specifically, the lower end of the first spring 10023 is fixed to the bottom groove of the accommodating cavity, and the upper end is connected to the top of the elastic meshing head 10022. The elastic meshing head 10022 adopts a hollow structure, and its left and right end faces are chamfered with arcs to ensure smooth movement. The sliding coupling 1002 can smoothly slide left and right under the traction of the adjusting plug-in 4. The sliding coupling 1002 has a two-way displacement function: when moving to the left extreme position, the sliding coupling 1002 forms a lower meshing transmission with the lower transmission wheel 1101; when moving to the right extreme position, the sliding coupling 1002 establishes a lateral transmission connection with the inclined cutting transmission wheel 1201, thereby realizing the double-station mode switching of the mechanism between the lower transmission wheel 1101 and the inclined cutting transmission wheel 1201.

[0048] The lower drive wheel 1101 adopts a structure with a pulley groove in the middle and integrally formed convex rib edges in the circumferential direction. The left and right end faces of the convex rib edges are processed with arc chamfers. When the elastic engagement head 10022 moves horizontally and interferes with the convex rib edges of the lower drive wheel 1101, the elastic engagement head 10022 will elastically contract into the inside of the guide sleeve 10021 to achieve avoidance. After the interference is released, the elastic engagement head 10022 automatically resets. At this time, the elastic engagement head 10022 forms a stable transmission cooperation with the lower drive wheel 1101. The circumferential direction of the bevel-cut drive wheel 1201 is also integrally formed with convex rib edges, and the end faces of the convex rib edges are processed with arc chamfers.

[0049] The working principle of the present invention:

[0050] First, start the reflux pump 603. The reflux pump 603 will extract the spraying liquid in the liquid storage tank and transport it to the atomizing nozzles 602 arranged in a matrix through the grid conveying pipe 601. Then, the atomizing nozzles 602 will transport the spraying liquid to the rinsing chamber to wait for rinsing the gas. At the same time, enable the driving device. The torque force output by the driving device is transmitted to the transmission main shaft 901, so that the power conversion mechanism 9 obtains a driving force and rotates as a whole, and then drives the loading chain 502 engaged with it to move. The loading chain 502 slidably clamped in the track side plate 501 can drive the loading hopper 503 inside it to circulate and move along the transportation interlayer between the equipment main body 1 and the sealing side plate 2, so that the loading hopper 503 can enter the bottom of the rinsing chamber to pick up the accumulated spraying liquid, and then return to the liquid storage tank along the transportation interlayer, and unload the spraying liquid back into the liquid storage tank again, realizing the reuse of the spraying liquid, thereby improving the utilization rate of the spraying liquid;

[0051] Next, start the pushing and pulling device. The output end of it pushes the adjusting plug-in 4 to move horizontally to the left until the air path control ports 401 on the left three-fork partition bar of the adjusting plug-in 4 are respectively aligned with the air source interfaces 704 at the bottom of the air guide chamber and the reaction chamber, realizing the connection of the air guide chamber with the reaction gas source and the reaction chamber with the tail gas discharge source. At this time, the reaction gas and the tail gas enter the air guide chamber and the reaction chamber respectively. The reaction gas in the air guide chamber enters the reaction chamber through the air guide connecting pipes 703 arranged longitudinally on the side wall, and fully contacts and reacts with the tail gas rising in a meandering manner in the reaction chamber. After initially removing the acidic substances in the tail gas, the gas flows orderly into the rinsing chamber inside the equipment main body 1. During this period, the air path control ports 401 on the right three-fork partition bar of the adjusting plug-in 4 will block the exhaust port at the bottom of the drying device 8, effectively preventing the unpurified gas from being discharged from the system;

[0052] Meanwhile, when the adjusting plug 4 moves leftward, the three-pronged spacers at both ends thereof drive the sliding coupling 1002 to slide along the surface of the central rotating shaft 1001. Since the driving gear 903 is always engaged with the power input gear 1003, while the power conversion mechanism 9 drives the liquid circulation and transportation assembly 5 to operate, it also drives the bidirectional transmission mechanism 10 to spin, causing the sliding coupling 1002 to rotate synchronously during the sliding process; when the sliding coupling 1002 on the left approaches the lower transmission wheel 1101, if the convex rib edge of the lower transmission wheel 1101 interferes with the elastic engagement head 10022 of the sliding coupling 1002, the elastic engagement head 10022 will elastically contract into the guiding sleeve 10021 to avoid it. After the two are misaligned, the elastic engagement head 10022 elastically resets, and the sliding coupling 1002 enters below the lower transmission wheel 1101, and the two form a transmission relationship; at this time, the rotating sliding coupling 1002 drives the lower transmission wheel 1101 to rotate synchronously, and the lower transmission wheel 1101 is connected to the cruise transmission wheel 1102 through the synchronous belt 1103, thereby driving the wind wheel 1104 at the air inlet of the washing cabin to rotate, disturbing and diverging the incoming gas, so that the gas contacts the spraying liquid in a more dispersed state, thereby increasing the gas-liquid contact area and improving the impurity removal efficiency;

[0053] When the gas detector monitors that the gas in the washing cabin meets the purification standard, it will send a gas compliance determination signal to the control system to start the discharge procedure, and immediately control the push-pull device to run in the reverse direction, pulling the adjusting plug 4 to move horizontally to the right to misalign the gas path control port 401 from the aforementioned connection position, and synchronously complete three key actions: First, cut off the connection channels between the air guide cavity and the reaction gas source, and between the reaction cavity and the tail discharge source to terminate the gas supply, and at the same time connect the drying device 8 to establish an exhaust path; Second, the left sliding coupling 1002 orderly exits from the transmission position below the lower transmission wheel 1101, and the two sliding couplings 1002 cooperate to displace to the side of the bevel cutting transmission wheel 1201 and establish a new transmission connection; at this time, the rotating sliding coupling 1002 drives the bevel cutting transmission wheel 1201 with an inclined section to make periodic rotations, and applies a regular variable thrust to the top push rod 1202 through the change of the section angle of the bevel cutting transmission wheel 1201. With the elastic reset function of the second spring 1204, the top push rod 1202 generates precise intermittent swings, thereby driving the sealing plug 1203 connected to its outer end to periodically open and close the side wall at the bottom of the washing cabin, forming a controlled slow release discharge mechanism for the washing liquid after multiple reactions. This design ensures that the washing liquid is safely discharged from the system only after reaching the best utilization rate through mechanical linkage.

[0054] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention; equivalent substitutions or modifications are made according to the technical plan and its improvement concept of the present invention, and these should all be included under the protection of the present invention.

Claims

1. An exhaust gas recovery device for silicon carbide smelting, comprising a device main body (1), with sealing side plates (2) sealingly installed on its front and rear side walls, and internally divided into three functional compartments: the left side is a neutralization compartment, the middle is a washing compartment, and the right side is a drying compartment; a neutralization reactor (7) is assembled in the neutralization compartment, and a drying device (8) is installed in the drying compartment; a liquid storage compartment is arranged on the upper layer of the washing compartment and a spray assembly (6) extending to the washing compartment is installed. It is characterized in that: There is a transportation interlayer between the equipment main body (1) and the sealed side plate (2), which are respectively connected to the bottom of the rinsing chamber and the top of the liquid storage chamber to construct an annular channel, and a liquid circulation and conveying assembly (5) is configured in the annular channel; an adjustment plug (4) running through the neutralization chamber, the rinsing chamber and the drying chamber is arranged at the bottom of the equipment main body (1), and both ends thereof adopt a three-pronged partition strip structure, and a bidirectional transmission mechanism (10) is connected between the two; a power conversion mechanism (9) is assembled between the lower part of the bidirectional transmission mechanism (10) and the annular channel; two sets of auxiliary systems are arranged in the rinsing chamber: an air intake transmission group (11) is installed on the side close to the neutralization reactor (7), and waste discharge linkage groups (12) are arranged on the left and right sides of the bottom. The bidirectional transmission mechanism (10) is composed of a central rotating shaft (1001), a sliding coupling (1002), a power input gear (1003) and a positioning bracket (1004): a power input gear (1003) driven by the power conversion mechanism (9) is coaxially installed in the center of the central rotating shaft (1001), positioning brackets (1004) are symmetrically arranged on both sides of the power input gear (1003), and the front and rear ends thereof are fixed to the inner wall of the rinsing chamber; the central rotating shaft (1001) vertically penetrates through the positioning bracket (1004) and is rotatably connected thereto through a bearing, and sliding couplings (1002) are respectively slidably assembled at the left and right ends thereof, and the sliding couplings (1002) are connected to the adjustment plug (4).

2. The tail gas recovery device for silicon carbide smelting according to claim 1, characterized in that: The air intake transmission group (11) is composed of a lower transmission wheel (1101), a cruise transmission wheel (1102), a synchronous belt (1103), a wind wheel (1104) and a mounting base (1105). The mounting base (1105) is fixedly installed on the side wall of the rinsing chamber. The lower transmission wheel (1101) and the cruise transmission wheel (1102) are respectively rotatably connected to the upper and lower ends of the mounting base (1105) through bearings and are connected by a synchronous belt (1103). The cruise transmission wheel (1102) and the wind wheel (1104) are coaxially installed, and the positioning bracket (1004) is arranged at the air intake position of the rinsing chamber.

3. The tail gas recovery device for silicon carbide smelting according to claim 2, characterized in that: The waste discharge linkage group (12) is composed of an inclined cutting transmission wheel (1201), a top push rod (1202), a sealing plug (1203) and a second spring (1204). The inclined cutting transmission wheel (1201) is installed inside the rinsing chamber and the shaft end thereof is rotatably connected to the inner side wall of the chamber body. The inclined cutting transmission wheel (1201) is located at the rightmost position of the moving stroke of the sliding coupling (1002) and an inclined cutting surface is arranged on its outer side; the top push rod (1202) movably penetrates through the side wall of the rinsing chamber and is in contact and cooperation with the inclined cutting surface; the bottom of the sealing plug (1203) blocks the waste discharge port of the rinsing chamber in a sealed plugging manner and is elastically connected to the outer wall of the equipment main body (1) through the second spring (1204).

4. The tail gas recovery device for silicon carbide smelting according to claim 3, wherein: The lower transmission wheel (1101) adopts a structure with a pulley groove in the middle and circumferentially integrally formed convex rib edges, and the left and right end faces of the convex rib edges are processed with arc chamfers. The circumferential direction of the inclined cutting transmission wheel (1201) is also integrally formed with convex rib edges, and the end face of the convex rib edge is processed with an arc chamfer.

5. The tail gas recovery device for silicon carbide smelting according to claim 1, characterized in that: The sliding coupling (1002) consists of a guiding sleeve (10021), an elastic engaging head (10022) and a first spring (10023); wherein, the inner wall of the guiding sleeve (10021) is provided with integrally formed guiding ribs, and the guiding ribs form an embedded fit with the slide rails on the surface of the central rotating shaft (1001). The guiding sleeve (10021) adopts an integrally formed structure of large and small tubes. The large tube is circumferentially provided with a receiving cavity, and the elastic engaging head (10022) is telescopically arranged in the receiving cavity through the first spring (10023). The elastic engaging head (10022) adopts a hollow structure, and its left and right end faces are processed with arc chamfers.

6. The tail gas recovery device for silicon carbide smelting according to claim 1, characterized in that: The neutralization reactor (7) consists of a double-chamber housing (701), a flow guiding plate (702), a gas guiding connecting pipe (703) and a gas source interface (704). Among them, the double-chamber housing (701) is the core structure of the neutralization chamber. The central part inside it is a reaction chamber, and gas guiding chambers are symmetrically arranged on the front and rear sides to form a double-channel layout. A plurality of misaligned and stacked flow guiding plates (702) are vertically arranged in the reaction chamber. Among them, the flow guiding plate (702) adopts a design with the middle part tilted upward, and the end is provided with a specific elevation angle. The adjacent flow guiding plates (702) on the same side are connected to the gas guiding chambers through the gas guiding connecting pipe (703) to form a gas diffusion network. Corresponding openings are respectively provided at the bottoms of the gas guiding chamber and the reaction chamber, and these openings are connected to an external gas source through the gas source interface (704). The gas source interface (704) corresponding to the gas guiding chamber is connected to the reaction gas source, and the gas source interface (704) corresponding to the reaction chamber is connected to the tail gas source.

7. The tail gas recovery device for silicon carbide smelting according to claim 6, wherein: A drying device (8) is installed in the drying chamber. An opening is provided at the bottom of the drying device (8) for alignment. The adjusting plug-in (4) is inserted into the three-pronged partition strip of the neutralization chamber, and gas path control ports (401) respectively communicating with the gas guiding chamber and the reaction chamber are provided. While the adjusting plug-in (4) is inserted into the three-pronged partition strip of the drying chamber, a gas path control port (401) connecting to the drying device (8) is provided.

8. The tail gas recovery device for silicon carbide smelting according to claim 7, characterized in that: The gas path control port (401) for opening and closing the gas guiding chamber is longer in length design than the gas path control port (401) of the reaction chamber. The adjusting plug-in (4) can be connected to a push-pull device assembled outside the equipment main body (1). The push-pull device can be a telescopic cylinder structure. Guide grooves for the adjusting plug-in (4) to penetrate are provided at the front and rear ends of the positioning bracket (1004).

9. The tail gas recovery device for silicon carbide smelting according to claim 1, characterized in that: A liquid circulation and conveying assembly (5) is provided in the annular channel formed by the equipment main body (1) and the sealing side plate (2). The liquid circulation and conveying assembly (5) consists of a track side plate (501), a transfer chain (502) and a transfer hopper (503). Among them, the track side plates (501) are symmetrically arranged on the left and right sides of the annular channel. A transfer chain (502) is slidably assembled in each track side plate (501). A plurality of transfer hoppers (503) are evenly arranged between the two transfer chains (502) along the movement track. The two ends of the transfer hopper (503) are installed on the side walls of the transfer chain (502).

10. The tail gas recovery device for silicon carbide smelting according to claim 9, characterized in that: The power conversion mechanism (9) is composed of a transmission main shaft (901), a driven gear (902) and a driving gear (903). The driven gears (902) are coaxially assembled at both ends of the transmission main shaft (901), and the driven gears (902) are engaged with the transfer chain (502); a guiding slot for the movement of the driven gear (902) is provided in the middle of the track side plate (501), and a driving gear (903) is installed in the middle of the surface of the transmission main shaft (901); the driven gear (902) penetrates through the side wall of the flushing cabin, and its outer extended end is power-connected to the driving device.

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