A trolley furnace with waste heat recovery function

Abstract

The present invention discloses a trolley furnace with a waste heat recovery function, which relates to the technical field of trolley furnaces, including a trolley furnace body and a recovery frame, and also includes a recovery device, wherein the waste heat recovery device is arranged on the top of the trolley furnace body, a slag discharge pipe is fixedly installed on the right side of the trolley furnace body, a connecting plate is fixedly installed on the circumferential surface of the slag discharge pipe, and a recovery hole is opened on the top of the recovery frame. After the connecting rod releases the limitation of the connecting plate and the slag discharge pipe, the recovery frame is manually pushed in the direction away from the slag discharge pipe to complete the separation of the slag discharge pipe and the recovery frame. The waste heat recovery device will be closed or adjusted during the slag treatment process to avoid interfering with the slag treatment process. The downtime of the waste heat recovery device is reduced by quick operation, thereby improving the efficiency of waste heat recovery and making slag recovery more timely.

Description

Technical Field

[0001] The present invention relates to the technical field of trolley furnaces, and in particular to a trolley furnace with a waste heat recovery function. Background Art

[0002] A trolley furnace with waste heat recovery function usually consists of a furnace body, a fan, a piping system and a waste heat recovery device, and the waste heat recovery device usually needs to be turned off when the slag is recovered.

[0003] The patent with patent announcement number CN209069020U relates to a trolley furnace with waste heat recovery function, including a furnace body and a combustion chamber; the combustion chamber is connected to a gas pipeline and an air pipeline; a smoke exhaust duct is connected to the side wall of the furnace body, and a turbocharger is arranged on the smoke exhaust duct, and the turbocharger includes an exhaust gas inlet, an exhaust gas outlet, an air inlet and an air outlet, the exhaust gas inlet and the exhaust gas outlet are connected to the smoke exhaust duct, the air inlet and the air outlet are connected to the air pipeline, and part of the air pipeline between the air inlet and the fire grate is arranged in the smoke exhaust duct between the exhaust gas inlet and the furnace body; this patent can increase the density of the air and thus increase the oxygen content by using a turbocharger; by arranging part of the gas pipeline and the air pipeline in the smoke exhaust duct, the air and gas can be preheated, so that the air and gas can be ignited more easily.

[0004] In the above patent, by using a turbocharger, the density of the air can be increased, thereby increasing the oxygen content; by setting part of the gas pipeline and the air pipeline in the smoke exhaust duct, the air and gas can be preheated, so that the air and gas can be ignited more easily. However, it is difficult to quickly install and disassemble the recovery frame for recovering slag from the trolley furnace body. The complexity of installing and disassembling the recovery frame will affect the efficiency of the operation, resulting in a reduction in the overall operating efficiency of the slag recovery system. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a trolley furnace with a waste heat recovery function, which solves the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a trolley furnace with waste heat recovery function, comprising a trolley furnace body and a recovery frame, and also comprising a recovery device, wherein the waste heat recovery device is arranged on the top of the trolley furnace body, a slag discharge pipe is fixedly installed on the right side of the trolley furnace body, a connecting plate is fixedly installed on the circumferential surface of the slag discharge pipe, and a recovery hole is opened on the top of the recovery frame, wherein the recovery device comprises an L-shaped plate, a placement hole, an elastic telescopic rod, a limit plate, a connecting frame, a connecting rod, a protective hole and a protective rod, and the connecting rod releases the connection between the connecting plate and After the slag discharge pipe is limited, the recovery frame is manually pushed to move away from the slag discharge pipe to complete the separation of the slag discharge pipe and the recovery frame, the L-shaped plate is fixedly installed on the right side of the recovery frame, the placement hole is opened at the top of the L-shaped plate, the elastic telescopic rod is fixedly installed on the inner wall of the placement hole, the limiting plate is fixedly installed on the free end of the elastic telescopic rod, the connecting frame is fixedly installed on the top of the L-shaped plate, the connecting rod slides through the inner and outer walls of the connecting frame, the protective hole is opened on the circumferential surface of the connecting rod, the protective rod is slidably installed on the top of the connecting frame, and a connecting hole is opened on the top of the connecting plate.

[0007] According to the above technical solution, a No. 1 spring is provided between the connecting frame and the connecting rod, and the No. 1 spring can drive the connecting rod to reset, and the protective rod contacts the inner wall of the protective hole.

[0008] According to the above technical solution, the limiting plate contacts the protection rod, the connecting rod contacts the inner wall of the connecting hole, and the protection rod moves toward the slag discharge pipe to contact the inner wall of the protection hole and limit the connecting rod.

[0009] According to the above technical solution, a leak-proof device is provided on the top of the recovery frame to prevent the slag from leaking out, and a feeding device is provided on the circumferential surface of the slag discharge pipe. The leak-proof device includes a cross rod, a support plate, a support rod, a baffle plate, an arc panel and a protective plate. The baffle plate moves in a direction away from the slag discharge pipe, driving the arc panel to move out of contact with the slag discharge pipe to facilitate the separation between the slag discharge pipe and the recovery frame. The cross rod slides through the left and right walls of the L-shaped plate, and the support plate is fixedly installed on the top of the recovery frame. The support rod is fixedly installed on the side of the support plate close to the limit plate, and the baffle plate is slidably installed on the circumferential surface of the support rod. The arc panel is fixedly installed on the side of the baffle plate close to the slag discharge pipe, and the protective plate is fixedly installed on the end of the cross rod away from the connecting plate.

[0010] According to the above technical solution, a linkage spring is provided between the cross rod and the L-shaped plate, which can drive the cross rod to reset. The end of the cross rod close to the slag discharge pipe is set as an inclined surface, and the cross rod is in contact with the shielding plate.

[0011] According to the above technical solution, a reset spring is arranged between the support rod and the baffle plate, and the reset spring can drive the baffle plate to reset. The arc panel is in contact with the slag discharge pipe, and the end of the arc panel away from the slag discharge pipe is set as an inclined plane. The elastic coefficient of the linkage spring is greater than the elastic coefficient of the reset spring.

[0012] According to the above technical solution, the feeding device includes an elastic telescopic block, a U-shaped plate, a feeding frame, a load-bearing plate, a load-bearing rod, a sealing plate, a feeding hole and an auxiliary frame. The U-shaped plate continues to move away from the slag discharge pipe to break away from the contact with the load-bearing rod, and the auxiliary frame moves upward and hits the load-bearing plate to generate vibration. The vibration of the auxiliary frame drives the load-bearing rod and the sealing plate to resonate together. The feeding frame is fixedly installed on the circumferential surface of the slag discharge pipe, the elastic telescopic block is fixedly installed on the front side of the feeding frame, the U-shaped plate is fixedly installed on the free end of the elastic telescopic block, the load-bearing plate is fixedly installed on the inner wall of the feeding frame, the load-bearing rod slides through the upper and lower walls of the load-bearing plate, the sealing plate is fixedly installed on the bottom of the load-bearing rod, the feeding hole is opened at the bottom of the feeding frame, the auxiliary frame is fixedly installed on the surface of the load-bearing rod, the circumferential surface of the slag discharge pipe is provided with a feeding hole, and the end of the U-shaped plate close to the load-bearing plate is provided with an extrusion hole.

[0013] According to the above technical solution, the sealing plate contacts the inner wall of the feeding hole, and the end of the load-bearing rod close to the top of the inner wall of the feeding frame is set as a slope. A No. 2 spring is arranged between the load-bearing plate and the load-bearing rod. One end of the No. 2 spring is arranged at the bottom of the load-bearing plate and the other end is arranged on the circumferential surface of the load-bearing rod. The No. 2 spring can drive the load-bearing rod to reset, and powdered calcium oxide is arranged inside the feeding frame.

[0014] The present invention provides a trolley furnace with waste heat recovery function. It has the following beneficial effects:

[0015] (1) The trolley furnace with waste heat recovery function manually pushes the limit plate toward the fixed end of the elastic telescopic rod to break away from the contact with the protective rod and release the limit on the protective rod. The limit plate can prevent the recovery frame from accidentally loosening due to human error, thereby avoiding safety accidents caused by accidental loosening of the recovery frame and ensuring the safety of the operator. At the same time, after the connecting rod releases the limit on the connecting plate and the slag discharge pipe, the recovery frame is manually pushed away from the slag discharge pipe to complete the separation of the slag discharge pipe and the recovery frame. During the slag treatment process, the waste heat recovery device will be closed or adjusted to avoid interfering with the slag treatment process. The downtime of the waste heat recovery device is reduced through quick operation, thereby improving the efficiency of waste heat recovery and making slag recovery more timely.

[0016] (2) The trolley furnace with waste heat recovery function moves the shield plate toward the slag discharge direction, drives the arc panel to move and contact the slag discharge pipe, and shields the joint between the slag discharge pipe and the recovery frame. The shielding can effectively prevent the slag from leaking from the gap between the slag discharge pipe and the recovery frame, ensuring that the slag can be completely recovered, thereby improving the recovery efficiency of the slag recovery. The shield plate moves away from the slag discharge pipe, drives the arc panel to move out of contact with the slag discharge pipe, and facilitates the disassembly between the slag discharge pipe and the recovery frame. The convenient disassembly makes it easier to separate the slag discharge pipe and the recovery frame when regular cleaning or maintenance is required, thereby faster slag processing.

[0017] (3) The trolley furnace with waste heat recovery function achieves the effect of quantitative feeding by disengaging the load-bearing rod from the contact with the U-shaped plate and moving upward under the elastic force of the No. 2 spring to restore the sealing of the feeding hole and the feed hole. The quantitative feeding of calcium oxide can stabilize the fluidity of the slag, reduce the slag agglomeration phenomenon, avoid blockage in the slag discharge pipe, keep the slag discharge pipe unobstructed, and thus improve the slag discharge efficiency. At the same time, the auxiliary frame moves upward to hit the load-bearing plate to generate vibration. The vibration of the auxiliary frame drives the load-bearing rod and the resonance together, which helps to maintain the fluidity of calcium oxide and ensures the smooth flow of calcium oxide. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the position structure of the slag discharge pipe and the recovery frame of the present invention;

[0020] Figure 3 For the present invention Figure 2 A schematic diagram of the structure of part A in the middle;

[0021] Figure 4 This is a schematic diagram of the position structure of the cross rod and the protective plate of the present invention;

[0022] Figure 5 For the present invention Figure 4 A magnified schematic diagram of the structure of part B;

[0023] Figure 6 This is a schematic diagram of the internal structure of the feeding frame of the present invention;

[0024] Figure 7 For the present invention Figure 6 Schematic diagram of the enlarged structure of part C in the middle.

[0025] In the figure: 1. Trolley furnace body; 2. Waste heat recovery device; 3. Slag discharge pipe; 4. Recovery frame; 5. Connecting plate; 6. L-shaped plate; 7. Placement hole; 8. Elastic telescopic rod; 9. Limiting plate; 10. Connecting frame; 11. Connecting rod; 12. Protection hole; 13. Protection rod; 141. Cross rod; 142. Support plate; 143. Support rod; 144. Shielding plate; 145. Arc panel; 146. Protective plate; 147. Linkage spring; 148. Reset spring; 151. Elastic telescopic block; 152. U-shaped plate; 153. Feeding frame; 154. Load-bearing plate; 155. Load-bearing rod; 156. Sealing plate; 157. Feeding hole; 158. Auxiliary frame. DETAILED DESCRIPTION

[0026] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0027] See also Figure 1-Figure 5 , one embodiment of the present invention is: a trolley furnace with waste heat recovery function, comprising a trolley furnace body 1 and a recovery frame 4, and also comprising a recovery device, wherein a waste heat recovery device 2 is provided on the top of the trolley furnace body 1, a slag discharge pipe 3 is fixedly installed on the right side of the trolley furnace body 1, a connecting plate 5 is fixedly installed on the circumferential surface of the slag discharge pipe 3, and a recovery hole is opened on the top of the recovery frame 4, wherein the recovery device comprises an L-shaped plate 6, a placement hole 7, an elastic telescopic rod 8, a limiting plate 9, a connecting frame 10, a connecting rod 11, a protection hole 12 and a protection rod 13, the L-shaped plate 6 is fixedly installed on the right side of the recovery frame 4, the placement hole 7 is opened on the top of the L-shaped plate 6, the elastic telescopic rod 8 It is fixedly installed on the inner wall of the placement hole 7, the limit plate 9 is fixedly installed on the free end of the elastic telescopic rod 8, the connecting frame 10 is fixedly installed on the top of the L-shaped plate 6, the connecting rod 11 slides through the inner and outer walls of the connecting frame 10, and the protection hole 12 is opened on the circumferential surface of the connecting rod 11. The protection rod 13 is slidably installed on the top of the connecting frame 10. A connecting hole is opened on the top of the connecting plate 5. The limit plate 9 can prevent the recovery frame 4 from accidentally loosening due to human error, thereby avoiding safety accidents caused by accidental loosening of the recovery frame 4. The downtime of the waste heat recovery device 2 is reduced through quick operation, thereby improving the efficiency of waste heat recovery and making slag recovery more timely.

[0028] A No. 1 spring is provided between the connecting frame 10 and the connecting rod 11 , and the No. 1 spring can drive the connecting rod 11 to reset, so that the protection rod 13 contacts the inner wall of the protection hole 12 .

[0029] The limiting plate 9 contacts the protection rod 13 , the connecting rod 11 contacts the inner wall of the connecting hole, and the protection rod 13 moves toward the slag discharge pipe 3 to contact the inner wall of the protection hole 12 and limit the connecting rod 11 .

[0030] When this embodiment is working: the waste heat recovery device 2 introduces the high-temperature exhaust gas generated by the trolley furnace body 1 into the trolley furnace body 1 for preheating through the pipeline, thereby achieving the effect of waste heat recovery. When the slag generated in the trolley furnace body 1 needs to be discharged, the recovery frame 4 is manually pushed to move in the direction close to the slag discharge pipe 3. The recovery frame 4 moves in the direction close to the slag discharge pipe 3 to drive the connecting frame 10 to move. The movement of the connecting frame 10 drives the connecting rod 11 to move. When the connecting rod 11 moves and aligns with the connecting hole, the connecting rod 11 is manually pressed to move downward. The connecting rod 11 moves downward to pull the No. 1 spring. The No. 1 spring is deformed by the pulling of the connecting rod 11. At the same time, the connecting rod 11 moves downward to contact the connecting hole and limit the connecting plate 5 and the slag discharge pipe 3. At the same time, the protective rod 13 is manually pushed to move in the direction close to the slag discharge pipe 3. The protective rod 13 moves in the direction close to the slag discharge pipe 3 and contacts the inner wall of the protective hole 12 and limits the connecting rod 11. The protective rod 13 After the limiting of connecting rod 11 is released, the recovery frame 4 is manually pushed to move in the direction away from the slag discharge pipe 3 to complete the separation of the slag discharge pipe 3 and the recovery frame 4.

[0031] See also Figure 1-Figure 7On the basis of the above embodiment, in another embodiment of the present invention, a leak-proof device is provided on the top of the recovery frame 4 to prevent the slag from leaking out, and a feeding device is provided on the circumferential surface of the slag discharge pipe 3. The leak-proof device includes a cross rod 141, a support plate 142, a support rod 143, a baffle plate 144, an arc panel 145 and a protective plate 146. The cross rod 141 slides through the left and right walls of the L-shaped plate 6, and the support plate 142 is fixedly installed on the top of the recovery frame 4. The support rod 143 is fixedly installed on the side of the support plate 142 close to the limit plate 9, and the baffle plate 144 is slidably installed on the circumferential surface of the support rod 143. The arc panel 145 is fixedly installed on the side of the baffle plate 144 close to the slag discharge pipe 3, and the protective plate 146 is fixedly installed on the end of the cross rod 141 away from the connecting plate 5. The shielding can effectively prevent the slag from leaking from the gap between the slag discharge pipe 3 and the recovery frame 4, ensuring that the slag can be completely recovered.

[0032] A linkage spring 147 is provided between the cross rod 141 and the L-shaped plate 6 , and the linkage spring 147 can drive the cross rod 141 to reset. The end of the cross rod 141 close to the slag discharge pipe 3 is set as an inclined surface, and the cross rod 141 contacts the baffle 144 .

[0033] A reset spring 148 is arranged between the support rod 143 and the baffle plate 144. The reset spring 148 can drive the baffle plate 144 to reset, and the arc panel 145 contacts the slag discharge pipe 3. The end of the arc panel 145 away from the slag discharge pipe 3 is set as an inclined plane, and the elastic coefficient of the linkage spring 147 is greater than the elastic coefficient of the reset spring 148.

[0034] The feeding device includes an elastic telescopic block 151, a U-shaped plate 152, a feeding frame 153, a bearing plate 154, a bearing rod 155, a sealing plate 156, a feeding hole 157 and an auxiliary frame 158. The feeding frame 153 is fixedly mounted on the circumferential surface of the slag discharge pipe 3, the elastic telescopic block 151 is fixedly mounted on the front side of the feeding frame 153, the U-shaped plate 152 is fixedly mounted on the free end of the elastic telescopic block 151, the bearing plate 154 is fixedly mounted on the inner wall of the feeding frame 153, and the bearing rod 155 slides through the bearing plate 154 upper and lower walls, the sealing plate 156 is fixedly installed at the bottom of the load-bearing rod 155, the feeding hole 157 is opened at the bottom of the feeding frame 153, the auxiliary frame 158 is fixedly installed on the surface of the load-bearing rod 155, the circumferential surface of the slag discharge pipe 3 is provided with a feeding hole, and the end of the U-shaped plate 152 close to the load-bearing plate 154 is provided with an extrusion hole. The quantitative addition of calcium oxide can stabilize the fluidity of the slag, and calcium oxide can reduce the slag agglomeration phenomenon. Vibration helps to maintain the fluidity of calcium oxide and ensure smooth flow of calcium oxide.

[0035] The sealing plate 156 is in contact with the inner wall of the feeding hole 157, and the end of the load-bearing rod 155 close to the top of the inner wall of the feeding frame 153 is set as a slope, and a No. 2 spring is arranged between the load-bearing plate 154 and the load-bearing rod 155. One end of the No. 2 spring is arranged at the bottom of the load-bearing plate 154 and the other end is arranged on the circumferential surface of the load-bearing rod 155. The No. 2 spring can drive the load-bearing rod 155 to reset. The end of the U-shaped plate 152 close to the recovery frame 4 is set as a slope. The feeding frame 153 and the sealing plate 156 are both made of high-temperature resistant materials, and powdered calcium oxide is arranged inside the feeding frame 153.

[0036] When this embodiment is working, manually press the connecting rod 11 downward, the connecting rod 11 moves downward, contacts the inclined surface of the cross rod 141 and squeezes the cross rod 141, and the cross rod 141 is squeezed by the connecting rod 11 and moves in the direction away from the slag discharge pipe 3, and the cross rod 141 moves to pull the linkage spring 147, and the linkage spring 147 is pulled by the cross rod 141 to deform and store force. At the same time, the cross rod 141 moves in the direction away from the slag discharge pipe 3 and breaks away from the contact with the shielding plate 144, and the cross rod 141 breaks away from the contact with the shielding plate 144, so that the shielding plate 144 moves in the direction close to the slag discharge pipe 3 under the elastic force of the return spring 148, and the shielding plate 144 moves in the direction close to the slag discharge pipe 3, driving the arc panel 145 to move and contact the slag discharge pipe 3 and block the joint between the slag discharge pipe 3 and the recovery frame 4. After the limit of the connecting rod 11 is released, when the connecting rod 11 moves upward under the elastic force of spring No. 1, the connecting rod 11 moves upward and disengages from the contact with the cross rod 141, so that the cross rod 141 moves toward the direction close to the slag discharge pipe 3 under the elastic force of the linkage spring 147, and the cross rod 141 moves toward the direction close to the slag discharge pipe 3 and contacts the inclined surface of the baffle plate 144 and squeezes the baffle plate 144. The baffle plate 144 is squeezed by the cross rod 141 and moves in the direction away from the slag discharge pipe 3. The baffle plate 144 moves in the direction away from the slag discharge pipe 3 and squeezes the return spring 148. The return spring 148 is deformed and accumulates force due to the pressure of the baffle plate 144. At the same time, the baffle plate 144 moves in the direction away from the slag discharge pipe 3, driving the arc panel 145 to move and disengage from the contact with the slag discharge pipe 3, which facilitates the disassembly between the slag discharge pipe 3 and the recovery frame 4.

[0037] The shielding plate 144 is squeezed by the cross rod 141 and moves in the direction away from the slag discharge pipe 3. The shielding plate 144 moves in the direction away from the slag discharge pipe 3 and contacts the U-shaped plate 152 and squeezes the U-shaped plate 152. The U-shaped plate 152 is squeezed by the shielding plate 144 and moves in the direction away from the slag discharge pipe 3. The U-shaped plate 152 moves in the direction away from the slag discharge pipe 3 and contacts the load-bearing rod 155 and squeezes the load-bearing rod 155. The load-bearing rod 155 is squeezed downward by the U-shaped plate 152. The load-bearing rod 155 moves downward to pull the No. 2 spring. The No. 2 spring is pulled by the load-bearing rod 155 to deform and store force. At the same time, the load-bearing rod 155 moves downward to drive the sealing plate 156 to move downward. The sealing plate 156 moves downward and is separated from the feeding hole 15 7 and the feed hole and release the seal of the feed hole 157 and the feed hole. After the seal of the feed hole 157 and the feed hole is released, the powdered calcium oxide inside the feed frame 153 falls into the slag discharge pipe 3 through the feed hole 157 and the feed hole. At the same time, the U-shaped plate 152 continues to move away from the slag discharge pipe 3 and breaks away from the contact with the load-bearing rod 155. The load-bearing rod 155 breaks away from the contact with the U-shaped plate 152 and moves upward under the elastic force of the No. 2 spring to restore the seal of the feed hole 157 and the feed hole to achieve the effect of quantitative feeding. At the same time, the load-bearing rod 155 moves upward, driving the auxiliary frame 158 to move upward. The auxiliary frame 158 moves upward and hits the load-bearing plate 154 to generate vibration. The vibration of the auxiliary frame 158 drives the load-bearing rod 155 and the sealing plate 156 to resonate together.

[0038] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A trolley furnace with waste heat recovery function, comprising a trolley furnace body (1) and a recovery frame (4), characterized in that: Also includes recovery devices; A waste heat recovery device (2) is provided on the top of the trolley furnace body (1), a slag discharge pipe (3) is fixedly installed on the right side of the trolley furnace body (1), a connecting plate (5) is fixedly installed on the circumferential surface of the slag discharge pipe (3), and a recovery hole is opened on the top of the recovery frame (4); The recovery device comprises an L-shaped plate (6), a placement hole (7), an elastic telescopic rod (8), a limiting plate (9), a connecting frame (10), a connecting rod (11), a protective hole (12) and a protective rod (13), wherein the L-shaped plate (6) is fixedly mounted on the right side of the recovery frame (4), the placement hole (7) is opened at the top of the L-shaped plate (6), the elastic telescopic rod (8) is fixedly mounted on the inner wall of the placement hole (7), the limiting plate (9) is fixedly mounted on the free end of the elastic telescopic rod (8), the connecting frame (10) is fixedly mounted on the top of the L-shaped plate (6), the connecting rod (11) slides through the inner and outer walls of the connecting frame (10), the protective hole (12) is opened on the circumferential surface of the connecting rod (11), the protective rod (13) is slidably mounted on the top of the connecting frame (10), and the top of the connecting plate (5) is provided with a connecting hole; Wherein, a leak-proof device for preventing slag from leaking out is provided on the top of the recovery frame (4), and a feeding device is provided on the circumferential surface of the slag discharge pipe (3); The anti-leakage device comprises a cross rod (141), a support plate (142), a support rod (143), a shielding plate (144), an arc panel (145) and a protective plate (146), wherein the cross rod (141) slides through the left and right walls of the L-shaped plate (6), the support plate (142) is fixedly mounted on the top of the recovery frame (4), the support rod (143) is fixedly mounted on a side of the support plate (142) close to the limit plate (9), the shielding plate (144) is slidably mounted on the circumferential surface of the support rod (143), the arc panel (145) is fixedly mounted on a side of the shielding plate (144) close to the slag discharge pipe (3), and the protective plate (146) is fixedly mounted on an end of the cross rod (141) away from the connecting plate (5); The feeding device comprises an elastic telescopic block (151), a U-shaped plate (152), a feeding frame (153), a bearing plate (154), a bearing rod (155), a sealing plate (156), a feeding hole (157) and an auxiliary frame (158), wherein the feeding frame (153) is fixedly mounted on the circumferential surface of the slag discharge pipe (3), the elastic telescopic block (151) is fixedly mounted on the front side of the feeding frame (153), the U-shaped plate (152) is fixedly mounted on the free end of the elastic telescopic block (151), the bearing plate ( 154) is fixedly mounted on the inner wall of the feeding frame (153), the load-bearing rod (155) slides through the upper and lower walls of the load-bearing plate (154), the sealing plate (156) is fixedly mounted on the bottom of the load-bearing rod (155), the feeding hole (157) is opened at the bottom of the feeding frame (153), the auxiliary frame (158) is fixedly mounted on the surface of the load-bearing rod (155), the circumferential surface of the slag discharge pipe (3) is provided with a feeding hole, and an extrusion hole is opened at one end of the U-shaped plate (152) close to the load-bearing plate (154).

2. The trolley furnace with waste heat recovery function according to claim 1, characterized in that: A No. 1 spring is provided between the connecting frame (10) and the connecting rod (11), and the protective rod (13) is in contact with the inner wall of the protective hole (12).

3. The trolley furnace with waste heat recovery function according to claim 2, characterized in that: The limiting plate (9) contacts the protection rod (13), and the connecting rod (11) contacts the inner wall of the connecting hole.

4. The trolley furnace with waste heat recovery function according to claim 3, characterized in that: A linkage spring (147) is provided between the cross rod (141) and the L-shaped plate (6); one end of the cross rod (141) close to the slag discharge pipe (3) is provided as an inclined surface; and the cross rod (141) is in contact with the shielding plate (144).

5. The trolley furnace with waste heat recovery function according to claim 4, characterized in that: A return spring (148) is provided between the support rod (143) and the shielding plate (144); the arc panel (145) is in contact with the slag discharge pipe (3); and one end of the arc panel (145) away from the slag discharge pipe (3) is provided as an inclined surface.

6. The trolley furnace with waste heat recovery function according to claim 5, characterized in that: The sealing plate (156) contacts the inner wall of the feeding hole (157), one end of the load-bearing rod (155) close to the top of the inner wall of the feeding frame (153) is set as an inclined surface, a second spring is set between the load-bearing plate (154) and the load-bearing rod (155), and powdered calcium oxide is set inside the feeding frame (153).

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