Regenerative precoated sand roasting furnace

Abstract

The invention provides a regenerative precoated sand roasting furnace, relates to the field of precoated sand roasting, and aims to solve the problem that in the prior art, when normal-temperature precoated sand is heated at a high temperature through a regenerative precoated sand roasting furnace, the normal-temperature precoated sand needs to consume a large amount of hearth heat when entering a furnace body, and consequently the preparation cost of the regenerated sand is high. According to the device, a synchronous adjusting mechanism is arranged, a second hollow ring, a fixing plate and a driving plate are driven to be heated through the synchronous adjusting mechanism, normal-temperature precoated sand is preheated, the heating and heat absorption load of the precoated sand in a combustion chamber is reduced, and the preparation cost of the reclaimed sand is reduced; by arranging the synchronous adjusting mechanism, the problem that the heat utilization rate is reduced due to the fact that flue gas waste heat is not fully utilized in the prior art is solved; through the arrangement of the synchronous adjusting mechanism, the problem that in the prior art, the production efficiency is reduced due to precoated sand blockage is solved; and by arranging the synchronous adjusting mechanism, the problem that in the prior art, the roasting quality is unstable due to the fact that the feeding rate is fixed is solved.

Description

Technical Field

[0001] This invention relates to the field of coated sand roasting, and more specifically, to a regenerative coated sand roasting furnace. Background Technology

[0002] The regenerated coated sand roasting furnace is a core supporting unit in the intelligent foundry island to realize the closed-loop regeneration and green recycling of old sand. Through high-temperature roasting, the resin film, residual carbon and organic matter on the surface of old sand particles are removed, so that the old sand is restored to a clean state, realizing the recycling and reuse of coated sand, thereby reducing production costs and reducing solid waste emissions.

[0003] The recycled coated sand roasting furnace consists of a furnace body, a combustion chamber, a feed hopper, and a discharge hopper. The combustion chamber heats the furnace chamber at high temperature, which is then transferred to the coated sand, causing the resin, residual carbon, and organic matter on the surface of the coated sand to decompose and burn off. However, in traditional processes, the coated sand is fed directly into the furnace chamber at room temperature through the feed hopper. Heating the coated sand requires a large amount of furnace heat, resulting in high fuel consumption and high production costs for recycled sand.

[0004] Therefore, we have made improvements to this and proposed a regenerative coated sand roasting furnace. Summary of the Invention

[0005] The purpose of this invention is to address the problem that when room-temperature coated sand is heated to a high temperature in a regenerated coated sand roasting furnace, a large amount of furnace heat is consumed when the room-temperature coated sand is fed into the furnace, resulting in a high cost for the preparation of regenerated sand.

[0006] To achieve the above-mentioned objectives, the present invention provides a regenerable coated sand roasting furnace to solve the aforementioned problems.

[0007] The application is as follows: It includes a furnace body, a feed hopper disposed on the furnace body, a combustion chamber disposed on the furnace body, a discharge hopper disposed on the furnace body, and a synchronous adjustment mechanism disposed on the furnace body; The synchronous adjustment mechanism includes a hollow ring 1 disposed within the furnace body, an outlet pipe disposed on the hollow ring 1, an inlet pipe 1 and an inlet pipe 2 disposed on the hollow ring 1, a one-way valve 1 disposed on the hollow ring 1, a one-way valve 2 disposed on the inlet pipe 2, a rotatable sealing ball disposed within the inlet pipe 1, an L-shaped groove disposed within the sealing ball, a rotatable drive shaft disposed on the inlet pipe 1, a knob disposed on the drive shaft, a rotatable hollow ring 2 disposed on the hollow ring 1, a connecting hole disposed on the hollow ring 2, a fixing plate disposed on the hollow ring 2, a drive plate disposed on the fixing plate, a baffle 1 disposed on the hollow ring 1, and an adjustment hole 1 disposed on the baffle 1.

[0008] As a preferred technical solution of this application, the exhaust pipe is fixedly inserted through the combustion chamber, the first intake pipe is fixedly inserted through the second intake pipe, the sealing ball is disposed on the drive shaft, and the interior of the fixing plate and the drive plate are both hollow.

[0009] As a preferred technical solution of this application, a motor is provided on the furnace body, a transmission shaft is provided at the output end of the motor, a drive gear is provided on the transmission shaft, and a transmission gear is provided on the hollow ring.

[0010] As a preferred technical solution of this application, the transmission shaft is rotatably mounted on the furnace body, and the drive gear and the transmission gear are mutually adapted.

[0011] As a preferred technical solution of this application, the drive plate is slidably disposed on the fixed plate, and springs are provided on the corresponding surfaces of the drive plate and the fixed plate. A synchronization post is provided on the baffle, and a wedge block is provided on the synchronization post.

[0012] As a preferred technical solution of this application, the end of the drive plate is inclined, and the wedge block and the end of the drive plate are adapted to each other.

[0013] As a preferred technical solution of this application, the drive board is provided with a through groove.

[0014] As a preferred technical solution of this application, a baffle two is rotatably arranged on the hollow ring one, the synchronizing column is arranged on the baffle two, the synchronizing column is rotatably arranged on the baffle one, the baffle two is provided with an adjustment hole two, the feeding hopper is rotatably arranged on the furnace body, and the feeding hopper is provided with an mounting bracket.

[0015] As a preferred technical solution of this application, the first adjustment hole and the second adjustment hole are mutually adapted, and the synchronization column is disposed on the mounting bracket.

[0016] As a preferred technical solution of this application, a limiting ring is provided on the feed hopper, and a bolt is threadedly connected to the limiting ring.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: In the scheme of this application: 1. In order to solve the problem that when the room temperature coated sand is heated to a high temperature in the existing recycled coated sand roasting furnace, a large amount of furnace heat is consumed when the room temperature coated sand is put into the furnace, resulting in a high cost of recycled sand preparation, this application sets up a synchronous adjustment mechanism. The synchronous adjustment mechanism drives the hollow ring II, the fixed plate and the drive plate to heat up and preheat the room temperature coated sand, thereby reducing the heat load of the coated sand in the combustion chamber and reducing the cost of recycled sand preparation; 2. By setting up a synchronous adjustment mechanism, the high-temperature flue gas is driven to circulate and controllably preheat, and the waste heat of the preheated flue gas is recovered, which improves the heat utilization rate and solves the problem of reduced heat utilization rate caused by the underutilization of flue gas waste heat in the existing technology. 3. By setting a synchronous adjustment mechanism, the fixed plate and the drive plate are driven to rotate and vibrate, which prevents the coated sand from sticking and clogging, and provides auxiliary feeding of the coated sand, thereby improving the production efficiency of the equipment and solving the problem of reduced production efficiency caused by coated sand clogging in the existing technology. 4. By setting a synchronous adjustment mechanism, the feeding rate is adjusted according to the humidity of the coated sand, which improves the calcination quality and solves the problem of unstable calcination quality caused by a fixed feeding rate in the existing technology. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the regenerated coated sand roasting furnace provided in this application; Figure 2 A schematic diagram of the internal structure of the regenerated coated sand roasting furnace provided in this application; Figure 3 A partial cross-sectional view of the hollow ring one and hollow ring two of the regenerated coated sand roasting furnace provided in this application; Figure 4 A schematic diagram of the hollow ring 1 and the internal structure of the hollow ring in the regenerable coated sand roasting furnace provided in this application; Figure 5 A partial cross-sectional view of the air inlet pipe 1 and air inlet pipe 2 of the regenerable coated sand roasting furnace provided in this application; Figure 6 The regenerable coated sand roasting furnace provided in this application Figure 5 Enlarged structural diagram of area A in the middle; Figure 7 A schematic diagram of the drive plate and wedge block adaptation structure of the regenerable coated sand roasting furnace provided in this application.

[0019] The image shows: 1. Furnace body; 101. Feed hopper; 102. Combustion chamber; 103. Discharge hopper; 2. Synchronous Adjustment Mechanism; 201. Hollow Ring I; 202. Air Outlet Pipe; 203. Air Inlet Pipe I; 204. Air Inlet Pipe II; 205. One-Way Valve I; 206. One-Way Valve II; 207. Sealing Ball; 208. L-Shaped Groove; 209. Drive Shaft; 210. Knob; 211. Hollow Ring II; 212. Connecting Hole; 213. Fixing Plate; 214. Drive Plate; 215. Baffle I; 216. Adjustment Hole I; 217. Motor; 218. Transmission Shaft; 219. Drive Gear; 220. Transmission Gear; 221. Spring; 222. Synchronous Column; 223. Wedge Block; 224. Through Groove; 225. Baffle II; 226. Adjustment Hole II; 227. Mounting Bracket; 228. Limiting Ring; 229. Bolt. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0021] As described in the background art, when the recycled coated sand roasting furnace heats the room-temperature coated sand at high temperature, the room-temperature coated sand entering the furnace body requires a large amount of furnace heat, resulting in a large cost of recycled sand preparation.

[0022] To solve this technical problem, the present invention provides a regenerative coated sand roasting furnace, which is applied to coated sand roasting.

[0023] For details, please refer to Figure 1 - Figure 7 As shown, the regenerated coated sand roasting furnace specifically includes: a furnace body 1, a feed hopper 101 disposed on the furnace body 1, a combustion chamber 102 disposed on the furnace body 1, a discharge hopper 103 disposed on the furnace body 1, and a synchronous adjustment mechanism 2 disposed on the furnace body 1. In the prior art, the combustion chamber 102 is used to heat the coated sand at high temperature. The synchronous adjustment mechanism 2 includes a hollow ring 201 installed inside the furnace body 1, an outlet pipe 202 installed on the hollow ring 201, an inlet pipe 203 and an inlet pipe 204 installed on the hollow ring 201, a one-way valve 205 installed on the hollow ring 201, a one-way valve 206 installed on the inlet pipe 204, a sealing ball 207 installed inside the inlet pipe 203, and an L-shaped groove 208 installed inside the sealing ball 207. A drive shaft 209 is mounted on the intake pipe 203, a knob 210 is mounted on the drive shaft 209, a hollow ring 211 is mounted on the hollow ring 201, a connecting hole 212 is mounted on the hollow ring 211, a fixing plate 213 is mounted on the hollow ring 211, a drive plate 214 is mounted on the fixing plate 213, a baffle 215 is mounted on the hollow ring 201, and an adjustment hole 216 is mounted on the baffle 215.

[0024] The regenerated coated sand roasting furnace provided by this invention addresses the problem in the prior art where the room-temperature coated sand requires a large amount of furnace heat to be consumed when it is heated to a high temperature in the furnace body 1, resulting in a high cost of regenerated sand preparation. This application provides a synchronous adjustment mechanism 2, which drives the hollow ring 211, the fixed plate 213, and the drive plate 214 to heat up and preheat the room-temperature coated sand, thereby reducing the heat absorption load of the coated sand in the combustion chamber 102 and reducing the cost of regenerated sand preparation. By using the synchronous adjustment mechanism 2, the high-temperature flue gas is driven to undergo cyclical and controllable preheating, and the waste heat of the preheated flue gas is recovered, thereby improving the heat utilization rate and solving the problem of reduced heat utilization rate caused by the underutilization of flue gas waste heat in the existing technology. By using the synchronous adjustment mechanism 2, the fixed plate 213 and the drive plate 214 are driven to rotate and vibrate, which prevents the coated sand from sticking and clogging, and provides auxiliary feeding of the coated sand, thereby improving the production efficiency of the equipment and solving the problem of reduced production efficiency caused by coated sand clogging in the prior art. By setting up a synchronous adjustment mechanism 2, the feeding rate is adjusted according to the humidity of the coated sand, which improves the calcination quality and solves the problem of unstable calcination quality caused by a fixed feeding rate in the prior art.

[0025] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0026] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] Example 1, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, a regenerable coated sand roasting furnace has an exhaust pipe 202 fixedly passing through the combustion chamber 102, an intake pipe 1 203 fixedly passing through the intake pipe 2 204, a sealing ball 207 set on the drive shaft 209, and the interiors of the fixing plate 213 and the drive plate 214 are hollow. In use, the coated sand is placed on the feed hopper 101. The coated sand then enters the hollow ring 211 from the feed hopper 101, and then enters the combustion chamber 102 through the regulating hole 216. The combustion chamber 102 heats the coated sand at high temperature, generating high-temperature flue gas. This high-temperature flue gas enters the hollow ring 201 from the exhaust pipe 202. Figure 3 As shown, both hollow ring 1 201 and hollow ring 211 have chambers. Hollow ring 1 201 encloses the combustion chamber 102. High-temperature flue gas enters through hollow ring 1 201 and forms a heat insulation layer, which insulates the combustion chamber 102, reducing heat loss and improving heat utilization. At this time, the high-temperature flue gas enters hollow ring 211 through one-way valve 1 205. One-way valve 1 205 is used to unidirectionally guide the high-temperature flue gas from hollow ring 1 201 into hollow ring 211. Hollow ring 211, connecting hole 212, fixing plate 213, and drive... All moving plates 214 are interconnected. High-temperature flue gas enters the fixed plate 213 and drive plate 214 through the connecting hole 212, causing the hollow ring 211, fixed plate 213, and drive plate 214 to heat up and preheat the room-temperature coated sand. This reduces the heat load of the coated sand in the combustion chamber 102, reduces fuel consumption, and reduces the cost of recycled sand preparation. The high-temperature flue gas in the hollow ring 211 enters the intake pipe 204 through the one-way valve 206. The one-way valve 206 is used to unidirectionally guide the high-temperature flue gas from the hollow ring 211 into the intake pipe 204. Figure 6 As shown, guided by the L-shaped groove 208, the flue gas re-enters the combustion chamber 102 through the L-shaped groove 208 and the inlet pipe 203. This method further recovers the waste heat of the preheated flue gas, reduces heat loss in the combustion chamber 102, stabilizes the temperature inside the combustion chamber 102, and improves the stability of the roasting process. When the temperature inside the combustion chamber 102 is too high, rotating the knob 210 drives the drive shaft 209 and the sealing ball 207 to rotate. Figure 6As shown, when the sealing ball 207 rotates 90 degrees counterclockwise, the high-temperature flue gas that preheats the coated sand is discharged from the second air inlet pipe 204, the L-shaped groove 208 and the first air inlet pipe 203. This method removes excess heat, prevents the combustion chamber 102 from overheating and causing damage, and improves the service life of the equipment. Furthermore, a motor 217 is installed on the furnace body 1, a transmission shaft 218 is installed at the output end of the motor 217, a drive gear 219 is installed on the transmission shaft 218, and a transmission gear 220 is installed on the hollow ring 201. like Figure 3 As shown, the motor 217 is started, which drives the transmission shaft 218 to rotate. The transmission shaft 218 drives the drive gear 219 to rotate, and the drive gear 219 drives the transmission gear 220 to rotate. The transmission gear 220 drives the hollow ring 211, the fixed plate 213, and the drive plate 214 to rotate synchronously. The rotation of the fixed plate 213 and the drive plate 214 agitates the coated sand, ensuring that the coated sand is heated evenly during the preheating process. At the same time, this method prevents the coated sand from sticking and clogging, assists in feeding the coated sand, improves the continuity of feeding, and thus improves the production efficiency of the equipment. Furthermore, the drive shaft 218 is rotatably mounted on the furnace body 1, and the drive gear 219 and the transmission gear 220 are mutually adapted. Furthermore, the drive plate 214 is slidably mounted on the fixed plate 213, and springs 221 are provided on the corresponding surfaces of the drive plate 214 and the fixed plate 213. A synchronizing post 222 is provided on the baffle 215, and a wedge block 223 is provided on the synchronizing post 222. Furthermore, the end of the drive plate 214 is inclined, and the wedge block 223 and the end of the drive plate 214 are adapted to each other; like Figure 7 As shown, when the hollow ring 211 rotates counterclockwise, it drives the fixed plate 213 and the drive plate 214 to rotate synchronously. When the end of the drive plate 214 contacts the wedge block 223, the wedge block 223 presses the end of the drive plate 214. At this time, the drive plate 214 slides along the fixed plate 213 and compresses the high-temperature flue gas, which increases the pressure inside the hollow ring 211. This allows the high-temperature flue gas in the hollow ring 211 to quickly enter the combustion chamber 102 from the one-way valve 206. This accelerates the thermal circulation of the high-temperature flue gas and improves the stability of the equipment. At this time, the elasticity of the spring 221 drives the drive plate 214 to slide back and hit the synchronous column 222, which causes the equipment to vibrate. This improves the feeding stability of the equipment. Furthermore, a through slot 224 is provided on the drive board 214; When the drive plate 214 rotates and pushes the coated sand, some of the coated sand passes through the through groove 224. This reduces the rotational resistance of the drive plate 214 and lowers the drive load. The through groove 224 increases the contact area between the drive plate 214 and the coated sand, thus improving the preheating effect. The synchronous adjustment mechanism 2 drives the hollow ring 211, fixed plate 213 and drive plate 214 to heat up and preheat the room temperature coated sand, which reduces the heat load of the coated sand in the combustion chamber 102 and reduces the cost of recycled sand preparation. The synchronous adjustment mechanism 2 drives the high temperature flue gas to circulate and controllably preheat, recovers the waste heat of the preheated flue gas, and improves the heat utilization rate. The synchronous adjustment mechanism 2 drives the fixed plate 213 and drive plate 214 to rotate and generate vibration, which prevents the coated sand from sticking and clogging, and provides auxiliary feeding of the coated sand, thereby improving the production efficiency of the equipment. Example 2 further optimizes the regenerable coated sand roasting furnace provided in Example 1, specifically, as follows: Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, a baffle 225 is rotatably mounted on the hollow ring 201, a synchronizing column 222 is mounted on the baffle 225, the synchronizing column 222 is rotatably mounted on the baffle 215, an adjusting hole 226 is provided on the baffle 225, the feed hopper 101 is rotatably mounted on the furnace body 1, and an installation bracket 227 is provided on the feed hopper 101. Furthermore, adjustment hole 1 216 and adjustment hole 226 are mutually compatible, and synchronization column 222 is mounted on mounting bracket 227; Furthermore, a limit ring 228 is provided on the feed hopper 101, and a bolt 229 is threadedly connected to the limit ring 228; The coated sand enters the combustion chamber 102 through the overlapping area of ​​adjustment hole 1 216 and adjustment hole 226. Based on the moisture content of the coated sand, the feed hopper 101 is rotated, which in turn drives the limiting ring 228 and the mounting frame 227 to rotate synchronously. The mounting frame 227 then drives the synchronizing column 222 and the baffle 225 to rotate, causing the adjustment ring 2 on the baffle 225 to rotate synchronously. This adjusts the overlapping area of ​​adjustment hole 1 216 and adjustment hole 226, thereby controlling the rate at which the coated sand enters the combustion chamber 102. The feed rate is adjusted according to the moisture content of the coated sand. When the moisture content is high, the feed rate is reduced to extend the preheating time of the coated sand and prevent insufficient roasting. When the moisture content is low, the feed rate is increased to improve processing efficiency, shorten the preheating time of the coated sand, and improve the roasting quality. When the adjustment of the feed hopper 101 is complete, the bolt 229 is rotated, causing it to rotate and press against the furnace body 1, thus limiting the feed hopper 101. The feeding rate is adjusted according to the humidity of the coated sand by the synchronous adjustment mechanism 2, which improves the roasting quality.

[0029] The process of using the regenerative coated sand roasting furnace provided by this invention is as follows: In use, the coated sand is placed on the feed hopper 101, and the motor 217 is started. The motor 217 drives the drive shaft 218 to rotate, the drive shaft 218 drives the drive gear 219 to rotate, the drive gear 219 drives the drive gear 220 to rotate, and the drive gear 220 drives the hollow ring 211, the fixed plate 213, and the drive plate 214 to rotate synchronously. The rotation of the fixed plate 213 and the drive plate 214 agitates the coated sand, which then enters the hollow ring 211 from the feed hopper 101. The coated sand then enters the combustion chamber 102 through the overlapping point of the adjustment hole 1 216 and the adjustment hole 226. The combustion chamber 102 heats the coated sand at a high temperature. High-temperature flue gas is generated during heating. This high-temperature flue gas enters the hollow ring 201 from the outlet pipe 202. Then, it enters the hollow ring 211 from the one-way valve 205. Finally, it enters the fixed plate 213 and drive plate 214 through the connecting hole 212, causing the hollow ring 211, fixed plate 213, and drive plate 214 to heat up and preheat the room-temperature coated sand. This reduces the heat load on the coated sand in the combustion chamber 102, thus reducing the cost of recycled sand preparation. The high-temperature flue gas in the hollow ring 211 enters the inlet pipe 204 from the one-way valve 206. Guided by the L-shaped groove 208, the flue gas flows from the L-shaped groove 208 and the inlet pipe 204... 03. The gas re-enters the combustion chamber 102 to further recover the residual heat of the preheated flue gas. When the temperature inside the combustion chamber 102 is too high, the knob 210 is turned, which drives the drive shaft 209 and the sealing ball 207 to rotate. When the sealing ball 207 rotates 90 degrees counterclockwise, the high-temperature flue gas preheating the coated sand is discharged from the second intake pipe 204, the L-shaped groove 208, and the first intake pipe 203, thus dissipating excess heat. At the same time, when the end of the drive plate 214 contacts the wedge block 223, the wedge block 223 presses against the end of the drive plate 214. At this time, the drive plate 214 slides along the fixed plate 213 and compresses the high-temperature flue gas, making... The increased pressure inside the hollow ring 211 causes the high-temperature flue gas to rapidly enter the combustion chamber 102 through the one-way valve 206, accelerating the thermal circulation of the high-temperature flue gas. The elasticity of the spring 221 drives the drive plate 214 to slide and reset, impacting the synchronous column 222, causing the equipment to vibrate. Based on the humidity of the coated sand, the feed hopper 101 is driven to rotate. The feed hopper 101 drives the limit ring 228 and the mounting bracket 227 to rotate synchronously. The mounting bracket 227 drives the synchronous column 222 and the baffle 225 to rotate. The adjustment on the baffle 225 rotates synchronously, thereby adjusting the overlapping area of ​​the adjustment hole 1 216 and the adjustment hole 226.

[0030] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0031] Obviously, the embodiments described above are merely some embodiments of the present invention, not all embodiments. The accompanying drawings show preferred embodiments of the present invention, but do not limit the patent scope of the present invention. The present invention can be implemented in many different forms; rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of 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 specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this invention.

Claims

1. A regenerable coated sand roasting furnace, comprising a furnace body (1), a feed hopper (101) disposed on the furnace body (1), a combustion chamber (102) disposed on the furnace body (1), and a discharge hopper (103) disposed on the furnace body (1), characterized in that, Includes a synchronous adjustment mechanism (2) disposed on the furnace body (1); The synchronous adjustment mechanism (2) includes a hollow ring (201) installed in the furnace body (1), an outlet pipe (202) installed on the hollow ring (201), an inlet pipe (203) and an inlet pipe (204) installed on the hollow ring (201), a one-way valve (205) installed on the hollow ring (201), a one-way valve (206) installed on the inlet pipe (204), a sealing ball (207) installed in the inlet pipe (203), and an L-shaped groove (208) installed in the sealing ball (207). A drive shaft (209) is mounted on the intake pipe (203), a knob (210) is mounted on the drive shaft (209), a hollow ring (211) is mounted on the hollow ring (201), a connecting hole (212) is mounted on the hollow ring (211), a fixing plate (213) is mounted on the hollow ring (211), a drive plate (214) is mounted on the fixing plate (213), a baffle (215) is mounted on the hollow ring (201), and an adjustment hole (216) is mounted on the baffle (215).

2. The regenerable coated sand roasting furnace according to claim 1, characterized in that, The exhaust pipe (202) is fixedly inserted through the combustion chamber (102), the first intake pipe (203) is fixedly inserted through the second intake pipe (204), the sealing ball (207) is disposed on the drive shaft (209), and the interior of the fixing plate (213) and the drive plate (214) are hollow.

3. A regenerable coated sand roasting furnace according to claim 2, characterized in that, The furnace body (1) is equipped with a motor (217), the output end of the motor (217) is equipped with a transmission shaft (218), the transmission shaft (218) is equipped with a drive gear (219), and the hollow ring (201) is equipped with a transmission gear (220).

4. A regenerable coated sand roasting furnace according to claim 3, characterized in that, The drive shaft (218) is rotatably mounted on the furnace body (1), and the drive gear (219) and the transmission gear (220) are adapted to each other.

5. A regenerable coated sand roasting furnace according to claim 4, characterized in that, The drive plate (214) is slidably disposed on the fixed plate (213). A spring (221) is disposed on the corresponding surface of the drive plate (214) and the fixed plate (213). A synchronizing column (222) is disposed on the baffle (215), and a wedge block (223) is disposed on the synchronizing column (222).

6. A regenerable coated sand roasting furnace according to claim 5, characterized in that, The end of the drive plate (214) is inclined, and the wedge block (223) and the end of the drive plate (214) are adapted to each other.

7. A regenerable coated sand roasting furnace according to claim 6, characterized in that, The drive plate (214) is provided with a through slot (224).

8. A regenerable coated sand roasting furnace according to claim 7, characterized in that, A baffle plate (225) is rotatably mounted on the hollow ring (201), a synchronizing column (222) is mounted on the baffle plate (225), a synchronizing column (222) is rotatably mounted on the baffle plate (215), an adjusting hole (226) is provided on the baffle plate (225), a feeding hopper (101) is rotatably mounted on the furnace body (1), and a mounting bracket (227) is provided on the feeding hopper (101).

9. A regenerable coated sand roasting furnace according to claim 8, characterized in that, The first adjustment hole (216) and the second adjustment hole (226) are adapted to each other, and the synchronization column (222) is set on the mounting bracket (227).

10. A regenerable coated sand roasting furnace according to claim 9, characterized in that, The feed hopper (101) is provided with a limit ring (228), and the limit ring (228) is threaded with a bolt (229).

Images