Waste gas waste heat utilization device of refining furnace

Abstract

The invention relates to the technical field of waste heat utilization, in particular to a refining furnace waste gas waste heat utilization device which comprises a connecting arm, a heat recovery assembly arranged at the upper end of the connecting arm, a driving assembly arranged at the upper end of the heat recovery assembly, a discharging assembly arranged at the lower end of the heat recovery assembly and a refining assembly arranged at the lower end of the connecting arm. The heat recovery assembly comprises a lantern ring, the lantern ring is fixedly connected to the upper end of the connecting arm, raw materials are pushed to move downwards through a spiral plate, and when the spiral plate rotates reversely, the lower surface extrudes the upper surface of a rotating block to push a rotating baffle to rotate; at the moment, the semicircular baffle is rotated to be closed, the raw materials are accumulated in the cylinder, then the handle is reversely pushed to open the air inlet to release heat at the lower end to heat the raw materials, the raw materials are borne through the cylinder connected with the refining furnace, the heat transmission distance is greatly reduced, and the waste heat utilization rate of the refining furnace is increased by reducing heat loss.

Description

Technical Field

[0001] The invention relates to the technical field of waste heat utilization, in particular to a waste gas waste heat utilization device of a refining furnace. Background Art

[0002] Refining furnace is a kind of equipment used for smelting in the hot processing industry. It is mainly used in the final deoxidation and alloying process of molten steel in ferrous metallurgy. The utilization of waste heat from refining furnace is an important energy-saving direction in steel production. By recycling and reusing the waste heat in the high-temperature flue gas generated by the refining furnace during the smelting process, it can effectively reduce energy consumption, reduce environmental pollution, and improve the economic benefits of the enterprise.

[0003] Existing refining furnaces need to preheat raw materials when smelting them, but the existing refining furnace preheating utilization device needs to conduct heat through pipelines, and hot air will be wasted during the conduction process, which makes it impossible to improve the utilization rate of the refining furnace waste heat. In addition, the preheated raw materials cannot be stacked together to ensure sufficient heating, which will cause the preheating work to fail to achieve the desired goal. Summary of the invention

[0004] In view of the problems in the prior art, the present invention provides a waste gas waste heat utilization device for a refining furnace.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a waste heat utilization device of a refining furnace, comprising a connecting arm, a heat recovery component is arranged at the upper end of the connecting arm, a driving component is arranged at the upper end of the heat recovery component, a discharge component is arranged at the lower end of the heat recovery component, and a refining component is arranged at the lower end of the connecting arm; The heat recovery component includes a ring, which is fixedly connected to the upper end of the connecting arm, a cylinder is fixedly sleeved on the inner wall of the ring, a cone ring is fixedly connected to the inner wall of the lower end of the cylinder, a plurality of air inlet holes are opened on the surface of the cone ring, a ring is movably sleeved on the lower end of the cylinder, a block is fixedly connected to the upper surface of the ring, a handle is fixedly connected to the outer wall of the ring, a lower clamping ring is fixedly connected to the side wall of the handle, a hatch cover is fixedly connected to the upper surface of the handle, an upper clamping ring is fixedly connected to the side wall of the hatch cover, a feeding port is opened on the outer wall of the cylinder, a sliding groove is opened on the inner wall of the ring, the hatch cover is slidably connected to the inside of the sliding groove, and a cone cylinder is fixedly connected to the upper end of the cylinder.

[0006] Specifically, the driving assembly includes a fixed plate, which is fixedly sleeved on the inner wall of the upper end of the cylinder, and a plurality of exhaust holes are opened on the surface of the fixed plate. A rotating shaft is rotatably connected at the center of the fixed plate, and a spiral plate is fixedly connected to the surface of the rotating shaft. A transmission gear is fixedly connected to the upper end of the rotating shaft, and a driving gear is meshed on the surface of the transmission gear. A transmission shaft is fixedly connected at the center of the side wall of the driving gear, and a mounting seat is fixedly connected to the outer wall of the cylinder, and a motor is clamped inside the mounting seat.

[0007] Specifically, the discharge assembly includes a fixed bar, which is fixedly connected to the inner wall of the circular ring, a round block is fixedly connected to the center of the upper surface of the fixed bar, a semicircular baffle is fixedly connected to the surface of the round block, the upper end of the round block is rotatably connected to a rotating baffle, a rotating groove is opened on one side wall of the rotating baffle, a fixed shaft is fixedly connected to the inner wall of the rotating groove, a rotating block is rotatably connected to the surface of the fixed shaft, a bottom film is fixedly connected to the inner wall of the rotating groove, and a limiting block is fixedly connected to the lower surface of the rotating baffle.

[0008] Specifically, the refining assembly includes a refining furnace, which is fixedly connected to the lower end of the connecting arm, and two air inlet pipes are symmetrically embedded on the inner wall of the refining furnace. A furnace cover is clamped at the upper end of the refining furnace, and a circular opening is opened on the upper surface of the furnace cover. A guide ring is fixedly connected to the upper surface of the furnace cover, and a positioning ring is clamped inside the guide ring. Four cylinders are fixedly connected in a ring shape on the upper surface of the positioning ring, and the four cylinders are embedded inside the same sleeve ring.

[0009] Specifically, a sliding opening is provided on the outer wall of the cylinder, and the sliding opening is clamped on the outer wall of the handle.

[0010] Specifically, the plurality of blocking blocks correspond to the plurality of air inlet holes, and the plurality of blocking blocks and the semicircular baffle are located on the same plane.

[0011] Specifically, a fixing seat is fixedly connected to the upper surface of the fixing plate, and the transmission shaft is rotatably connected in the fixing seat.

[0012] Specifically, the rotation groove and the limit block are symmetrically arranged on the two end surfaces of the rotating baffle, and the depth of the rotation groove is longer than the thickness of the rotating block.

[0013] Beneficial effects of the present invention: (1) The waste heat utilization device of the exhaust gas of a refining furnace described in the present invention pushes the raw material downward through a spiral plate. When the spiral plate reverses, the lower surface squeezes the upper surface of the rotating block, thereby pushing the rotating baffle to rotate. When the limit block at the lower end of the rotating baffle contacts the semicircular baffle, the rotating baffle stops rotating. At this time, the semicircular baffle of the rotating baffle is closed, so that the raw material accumulates in the cylinder. Then, the handle is pushed back to open the air inlet hole to release the heat at the lower end to heat the raw material. The raw material is carried by the cylinder connected to the refining furnace, so that the heat transmission distance is greatly reduced, and the waste heat utilization rate of the refining furnace is improved by reducing heat loss.

[0014] (2) The waste heat utilization device of the exhaust gas of the refining furnace described in the present invention pushes the alignment ring downward by starting the cylinder. When the alignment ring moves downward, it is clamped in the inside of the circular mouth by the guide ring, so that the furnace cover and the cylinder are connected, so that the heat inside the refining furnace is stably input into the cylinder. The heat in the cylinder flows along the space divided by the spiral plate, so that the heat can fully heat the raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 A schematic diagram of the structure of a waste gas waste heat utilization device for a refining furnace provided by the present invention; Figure 2 A schematic cross-sectional structure diagram of a waste gas waste heat utilization device for a refining furnace provided by the present invention Figure 1 ; Figure 3 A schematic cross-sectional structure diagram of a waste gas waste heat utilization device for a refining furnace provided by the present invention Figure 2 ; Figure 4 A schematic diagram of the structure of a heat recovery component of a waste gas waste heat utilization device for a refining furnace provided by the present invention; Figure 5 A schematic diagram of the structure of a discharge assembly of a waste gas waste heat utilization device of a refining furnace provided by the present invention; Figure 6 A schematic diagram of the structure of a fixed plate of a waste gas waste heat utilization device of a refining furnace provided by the present invention; Figure 7 A schematic diagram of the sleeve ring structure of a waste gas waste heat utilization device of a refining furnace provided by the present invention; Figure 8 A schematic diagram of the cylindrical structure of a waste gas waste heat utilization device of a refining furnace provided by the present invention.

[0017] In the figure: 1, connecting arm; 2, heat recovery component; 21, sleeve; 22, cylinder; 23, cone ring; 24, air inlet; 25, ring; 26, block; 27, handle; 28, lower clamping ring; 29, hatch; 210, upper clamping ring; 211, feeding port; 212, sliding groove; 213, sliding opening; 214, cone; 3, driving component; 31, fixing plate; 32, exhaust hole; 33, rotating shaft; 34, spiral plate; 35, transmission gear; 3 6. Driving gear; 37. Transmission shaft; 38. Fixed seat; 39. Mounting seat; 310. Motor; 4. Discharging assembly; 41. Fixed bar; 42. Round block; 43. Semicircular baffle; 44. Rotating baffle; 45. Rotating groove; 46. Fixed shaft; 47. Rotating block; 48. Film; 49. Limit block; 5. Refining assembly; 51. Refining furnace; 52. Inlet pipe; 53. Furnace cover; 54. Round mouth; 55. Guide ring; 56. Alignment ring; 57. Cylinder. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0019] like Figure 1-Figure 8 As shown, a waste heat utilization device for a refining furnace according to the present invention comprises a connecting arm 1, a heat recovery component 2 is arranged at the upper end of the connecting arm 1, a driving component 3 is arranged at the upper end of the heat recovery component 2, a discharge component 4 is arranged at the lower end of the heat recovery component 2, and a refining component 5 is arranged at the lower end of the connecting arm 1; The heat recovery component 2 includes a collar 21, which is fixedly connected to the upper end of the connecting arm 1, a cylinder 22 is fixedly sleeved on the inner wall of the collar 21, a cone ring 23 is fixedly connected to the inner wall of the lower end of the cylinder 22, a plurality of air inlet holes 24 are provided on the surface of the cone ring 23, a ring 25 is movably sleeved on the lower end of the cylinder 22, a block 26 is fixedly connected to the upper surface of the ring 25, a handle 27 is fixedly connected to the outer wall of the ring 25, a lower clamping ring 28 is fixedly connected to the side wall of the handle 27, a hatch 29 is fixedly connected to the upper surface of the handle 27, and a The upper clamping ring 210 and the outer wall of the cylinder 22 are provided with a feeding port 211, and the inner wall of the sleeve ring 21 is provided with a sliding groove 212. The hatch 29 is slidably connected to the inside of the sliding groove 212. The upper end of the cylinder 22 is fixedly connected with a cone 214. The handle 27 is pushed to drive the ring 25 to rotate. The ring 25 drives multiple blocking blocks 26 to block the air inlet 24 to stop the hot air from entering the cylinder 22. When the handle 27 is rotated, it drives the hatch 29 to rotate, so that the hatch 29 is moved away from the feeding port 211, and then the raw materials are input into the cylinder 22 through the feeding port 211, and the raw materials fall on the spiral plate 34.

[0020] Specifically, the driving assembly 3 includes a fixed plate 31, which is fixedly sleeved on the inner wall of the upper end of the cylinder 22. A plurality of exhaust holes 32 are provided on the surface of the fixed plate 31. A rotating shaft 33 is rotatably connected at the center of the fixed plate 31. A spiral plate 34 is fixedly connected to the surface of the rotating shaft 33. A transmission gear 35 is fixedly connected to the upper end of the rotating shaft 33. A driving gear 36 is meshed on the surface of the transmission gear 35. A transmission shaft 37 is fixedly connected to the center of the side wall of the driving gear 36. A mounting seat 39 is fixedly connected to the outer wall of the cylinder 22. A motor 310 is clamped inside the mounting seat 39. The control motor 310 drives the transmission shaft 37 to rotate. The transmission shaft 37 drives the rotating shaft 33 to rotate through the driving gear 36 and the transmission gear 35. When the rotating shaft 33 rotates, it drives the spiral plate 34 to rotate. When the spiral plate 34 rotates, it pushes the raw material to move downward.

[0021] Specifically, the discharge assembly 4 includes a fixed bar 41, which is fixedly connected to the inner wall of the ring 25, a round block 42 is fixedly connected to the center of the upper surface of the fixed bar 41, a semicircular baffle 43 is fixedly connected to the surface of the round block 42, a rotating baffle 44 is rotatably connected to the upper end of the round block 42, a rotating groove 45 is provided on one side wall of the rotating baffle 44, a fixed shaft 46 is fixedly connected to the inner wall of the rotating groove 45, a rotating block 47 is rotatably connected to the surface of the fixed shaft 46, a bottom film 48 is fixedly connected to the inner wall of the rotating groove 45, a limiting block 49 is fixedly connected to the lower surface of the rotating baffle 44, when the spiral plate 34 is reversed, the lower surface squeezes the upper surface of the rotating block 47 to push the rotating baffle 44 to rotate, and when the limit stop at the lower end of the rotating baffle 44 is reached, the rotating baffle 44 is rotated. When the block 49 contacts the semicircular baffle 43, the rotating baffle 44 stops rotating. At this time, the rotating baffle 44 and the semicircular baffle 43 are closed, so that the raw material is accumulated in the cylinder 22. Then the handle 27 is pushed back to open the air inlet 24 to release the heat from the lower end to heat the raw material. The raw material is carried by the cylinder 22 connected to the refining furnace 51, so that the heat transmission distance is greatly reduced, and the waste heat utilization rate of the refining furnace 51 is improved by reducing heat loss. When it is necessary to add material, the spiral plate 34 is controlled to rotate forward so that the lower end side wall contacts and squeezes one end of the rotating block 47, thereby driving the rotating baffle 44 to reverse. When the limit block 49 stops the rotating baffle 44 again, the semicircular baffle 43 of the rotating baffle 44 overlaps, so that the spiral plate 34 pushes the pipe raw material into the refining furnace 51.

[0022] Specifically, the refining assembly 5 includes a refining furnace 51, which is fixedly connected to the lower end of the connecting arm 1, and two air inlet pipes 52 are symmetrically embedded on the inner wall of the refining furnace 51. A furnace cover 53 is clamped at the upper end of the refining furnace 51, and a circular opening 54 is opened on the upper surface of the furnace cover 53. A guide ring 55 is fixedly connected to the upper surface of the furnace cover 53, and a positioning ring 56 is clamped inside the guide ring 55. Four cylinders 57 are fixedly connected in an annular shape on the upper surface of the positioning ring 56. The four cylinders 57 are embedded in the same sleeve 21. The cylinder 57 is started to push the positioning ring 56 to move downward. When the positioning ring 56 moves downward, it is clamped in the circular opening 54 through the guide ring 55, so that the furnace cover 53 is connected with the cylinder 22, so that the heat inside the refining furnace 51 is stably input into the cylinder 22, and the heat in the cylinder 22 flows along the space divided by the spiral plate 34, so that the heat can fully heat the raw material to prevent uneven heating of the raw material.

[0023] Specifically, a sliding opening 213 is formed on the outer wall of the cylinder 22 , and the sliding opening 213 is clamped on the outer wall of the handle 27 . The sliding opening 213 guides the rotation direction of the handle 27 to prevent the handle 27 from being displaced.

[0024] Specifically, the plurality of blockages 26 correspond to the plurality of air inlet holes 24 , and the plurality of blockages 26 and the semicircular baffle 43 are located on the same plane. The opening and closing of the air inlet holes 24 are controlled by the positions of the blockages 26 to prevent heat from being ejected and causing danger when inputting raw materials.

[0025] Specifically, a fixing seat 38 is fixedly connected to the upper surface of the fixing plate 31 , and the transmission shaft 37 is rotatably connected in the fixing seat 38 . The fixing seat 38 stabilizes the transmission shaft 37 to prevent the transmission shaft 37 from shaking when rotating.

[0026] Specifically, the rotating groove 45 and the limit block 49 are symmetrically arranged on the two end surfaces of the rotating baffle 44. The depth of the rotating groove 45 is longer than the thickness of the rotating block 47. Therefore, when the limit block 49 restricts the rotating baffle 44 to stop, the surface contact between the spiral plate 34 and the rotating block 47 will drive the rotating block 47 to be stuck in the rotating groove 45, so that the rotation of the spiral plate 34 can be kept stable.

[0027] When in use, first start the cylinder 57 to push the alignment ring 56 downward. When the alignment ring 56 moves downward, it is clamped in the circular opening 54 through the guide ring 55, so that the furnace cover 53 is connected with the cylinder 22, so that the heat inside the refining furnace 51 is stably input into the cylinder 22, and the heat in the cylinder 22 flows along the space divided by the spiral plate 34, so that the heat fully heats the raw material to prevent uneven heating of the raw material, and then push the handle 27 to drive the circular ring 25 to rotate, and the circular ring 25 drives multiple blocking blocks 26 to block the air inlet 24 to stop the hot air from entering the cylinder 22. When the handle 27 rotates, it drives the hatch 29 to rotate, so that the hatch 29 is removed from the feeding port 211, and then the raw material is input into the cylinder 22 through the feeding port 211. The raw material falls on the spiral plate 34, and the control motor 310 drives the transmission shaft 37 to rotate. The transmission shaft 37 drives the rotating shaft 33 to rotate through the driving gear 36 and the transmission gear 35. When the rotating shaft 33 rotates, it drives the spiral When the plate 34 rotates, the spiral plate 34 pushes the raw material to move downward. When the spiral plate 34 reverses, the lower surface squeezes the upper surface of the rotating block 47 to push the rotating baffle 44 to rotate. When the limit block 49 at the lower end of the rotating baffle 44 contacts the semicircular baffle 43, the rotating baffle 44 stops rotating. At this time, the rotating baffle 44 and the semicircular baffle 43 are closed, so that the raw material accumulates in the cylinder 22, and then the handle 27 is pushed back to open the air inlet 24 to release the heat from the lower end to heat the raw material. The raw material is carried by the cylinder 22 connected to the refining furnace 51, so that the heat transmission distance is greatly reduced, and the waste heat utilization rate of the refining furnace 51 is improved by reducing heat loss. When it is necessary to add material, the spiral plate 34 is controlled to rotate forward so that the lower end side wall contacts and squeezes one end of the rotating block 47, thereby driving the rotating baffle 44 to reverse. When the limit block 49 stops the rotating baffle 44 again, the semicircular baffle 43 of the rotating baffle 44 overlaps, so that the spiral plate 34 pushes the pipe raw material to fall into the refining furnace 51.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A waste heat utilization device for a refining furnace, comprising a connecting arm (1), a heat recovery component (2) being arranged at the upper end of the connecting arm (1), a driving component (3) being arranged at the upper end of the heat recovery component (2), a discharge component (4) being arranged at the lower end of the heat recovery component (2), and a refining component (5) being arranged at the lower end of the connecting arm (1); The heat recovery component (2) comprises a sleeve (21), the sleeve (21) being fixedly connected to the upper end of the connecting arm (1), a cylinder (22) being fixedly sleeved on the inner wall of the sleeve (21), a cone ring (23) being fixedly connected to the inner wall of the lower end of the cylinder (22), a plurality of air inlet holes (24) being provided on the surface of the cone ring (23), a ring (25) being movably sleeved on the lower end of the cylinder (22), a block (26) being fixedly connected to the upper surface of the ring (25), and a block (26) being fixedly connected to the outer wall of the ring (25). A handle (27) is provided, a lower clamping ring (28) is fixedly connected to the side wall of the handle (27), a hatch cover (29) is fixedly connected to the upper surface of the handle (27), an upper clamping ring (210) is fixedly connected to the side wall of the hatch cover (29), a material feeding port (211) is provided on the outer wall of the cylinder (22), a sliding groove (212) is provided on the inner wall of the collar (21), the hatch cover (29) is slidably connected to the inside of the sliding groove (212), and a cone (214) is fixedly connected to the upper end of the cylinder (22).

2. The exhaust gas waste heat utilization device of a refining furnace according to claim 1, characterized in that: The driving assembly (3) comprises a fixing plate (31), the fixing plate (31) being fixedly sleeved on the inner wall of the upper end of the cylinder (22), a plurality of exhaust holes (32) being provided on the surface of the fixing plate (31), a rotating shaft (33) being rotatably connected at the center of the fixing plate (31), a spiral plate (34) being fixedly connected to the surface of the rotating shaft (33), a transmission gear (35) being fixedly connected to the upper end of the rotating shaft (33), a driving gear (36) being meshed on the surface of the transmission gear (35), a transmission shaft (37) being fixedly connected to the center of the side wall of the driving gear (36), a mounting seat (39) being fixedly connected to the outer wall of the cylinder (22), and a motor (310) being clamped inside the mounting seat (39).

3. The exhaust gas waste heat utilization device of a refining furnace according to claim 1, characterized in that: The material discharge assembly (4) comprises a fixing bar (41), wherein the fixing bar (41) is fixedly connected to the inner wall of the circular ring (25), a round block (42) is fixedly connected to the center of the upper surface of the fixing bar (41), a semicircular baffle (43) is fixedly connected to the surface of the round block (42), a rotating baffle (44) is rotatably connected to the upper end of the round block (42), a rotating groove (45) is provided on one side wall of the rotating baffle (44), a fixing shaft (46) is fixedly connected to the inner wall of the rotating groove (45), a rotating block (47) is rotatably connected to the surface of the fixed shaft (46), a bottom film (48) is fixedly connected to the inner wall of the rotating groove (45), and a limiting block (49) is fixedly connected to the lower surface of the rotating baffle (44).

4. The exhaust gas waste heat utilization device of a refining furnace according to claim 1, characterized in that: The refining assembly (5) comprises a refining furnace (51), the refining furnace (51) being fixedly connected to the lower end of the connecting arm (1), two air inlet pipes (52) being symmetrically embedded on the inner wall of the refining furnace (51), a furnace cover (53) being clamped at the upper end of the refining furnace (51), a circular opening (54) being provided on the upper surface of the furnace cover (53), a guide ring (55) being fixedly connected to the upper surface of the furnace cover (53), a positioning ring (56) being clamped inside the guide ring (55), four cylinders (57) being fixedly connected in an annular shape on the upper surface of the positioning ring (56), the four cylinders (57) being embedded inside the same sleeve ring (21).

5. The exhaust gas waste heat utilization device of a refining furnace according to claim 1, characterized in that: A sliding opening (213) is provided on the outer wall of the cylinder (22), and the sliding opening (213) is clamped on the outer wall of the handle (27).

6. The exhaust gas waste heat utilization device of a refining furnace according to claim 1, characterized in that: The plurality of blocking blocks (26) correspond to the plurality of air inlet holes (24), and the plurality of blocking blocks (26) and the semicircular baffle (43) are located on the same plane.

7. The device for utilizing waste heat from exhaust gas of a refining furnace according to claim 2, characterized in that: A fixing seat (38) is fixedly connected to the upper surface of the fixing plate (31), and the transmission shaft (37) is rotatably connected to the fixing seat (38).

8. The device for utilizing waste heat from exhaust gas of a refining furnace according to claim 3, characterized in that: The rotating groove (45) and the limiting block (49) are symmetrically arranged on the two end surfaces of the rotating baffle (44), and the depth of the rotating groove (45) is greater than the thickness of the rotating block (47).

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