Movable asphalt mixture stirring regeneration combustion furnace

Abstract

The utility model relates to a movable asphalt mixture stirring regeneration combustion furnace, which belongs to the field of combustion furnaces, and comprises a cylindrical furnace body, the cylindrical furnace body is fixedly arranged on a frame, a heat preservation fire-resistant furnace door capable of being opened and closed is arranged at the right end of the cylindrical furnace body, and the heat preservation fire-resistant furnace door comprises an annular door plate and an annular cover body. The annular cover body is fixedly arranged on the right side face of the annular door plate, an annular cavity is formed between the annular cover body and the annular door plate, high-temperature-resistant heat insulation layers are fixedly laid on the outer peripheral side and the right side of the annular cavity, and fireproof filling blocks are arranged between the inner peripheral side and the left side of the annular cavity and the high-temperature-resistant heat insulation layers. The high-temperature-resistant fire-resistant furnace door is compact in overall structure, the high-temperature-resistant heat insulation layer is covered by the fire-resistant filling block, high temperature in a combustion furnace can be effectively prevented from being conducted to the heat-preservation fire-resistant furnace door, heat preservation can be effectively conducted in the combustion process of the combustor, the furnace door can be prevented from bulging and deforming due to the high temperature, and the combustor is prevented from falling off.

Description

Technical Field

[0001] The utility model belongs to the field of mobile asphalt mixture mixing equipment, and particularly relates to a mobile asphalt mixture mixing and recycling combustion furnace. Background Art

[0002] In the process of mobile asphalt mixture recycling, the asphalt recycled material is heated by a combustion furnace to prevent asphalt aging. For example, the Chinese utility model patent with the publication number CN203947388U discloses a combustion furnace for a mobile asphalt mixture mixing equipment with an improved structure, and the Chinese utility model patent with the publication number CN203947392U discloses a mobile asphalt mixture mixing equipment with side feeding. However, the heat preservation effect of the furnace door on the existing mobile asphalt mixture mixing equipment is not good, wasting the heat generated by the combustion of the burner, and the furnace door is prone to bulging and deformation due to high temperature, and even the burner falls off, affecting the asphalt mixture recycling work. Summary of the Utility Model

[0003] In view of the deficiencies of the prior art, the purpose of the utility model is to provide a mobile asphalt mixture mixing and recycling combustion furnace to solve or improve the defects existing in the prior art.

[0004] To achieve the above purpose, the utility model adopts the following technical scheme: a mobile asphalt mixture mixing and recycling combustion furnace, including a cylindrical furnace body, the cylindrical furnace body is fixedly installed on a vehicle frame, a heat-insulating refractory furnace door capable of opening and closing is installed at the right end of the cylindrical furnace body, the heat-insulating refractory furnace door includes an annular door plate and an annular cover body, the annular cover body is fixedly arranged on the right side surface of the annular door plate, an annular cavity is formed between the annular cover body and the annular door plate, high-temperature heat-insulating layers are fixedly laid on the outer peripheral side and the right side of the annular cavity, and refractory filling blocks are arranged between the inner peripheral side and the left side of the annular cavity and the high-temperature heat-insulating layer.

[0005] Preferably, a left locking flange is arranged at the right end of the cylindrical furnace body, the outer edge part of the annular door plate forms a right locking flange that is sealingly matched with the left locking flange, at least one circle of sealing grooves is opened on the left side surface of the right locking flange, and heat-resistant sealing rings are embedded in the sealing grooves.

[0006] Preferably, the rear side part of the left end of the heat-insulating refractory furnace door is movably hinged to the rear side part of the right end of the cylindrical furnace body through the cooperation of a connecting pin shaft and a connecting pin sleeve, a plurality of spaced furnace door locking devices are installed on the front side of the right end of the cylindrical furnace body, a plurality of left locking grooves corresponding to the furnace door locking devices are opened on the front side of the left locking flange, and a plurality of right locking grooves corresponding to the furnace door locking devices are opened on the front side of the right locking flange.

[0007] Preferably, the furnace door locking device includes a swinging screw, a locking nut, and a T-shaped handle. One end of the swinging screw is movably hinged to the left and right of the cylindrical furnace body. The locking nut is sleeved on the other end of the swinging screw. The T-shaped handle is coaxially and fixedly welded to the locking nut. The swinging screw can swing to the right and be caught in the left locking groove and the right locking groove.

[0008] Preferably, the sealing groove is a dovetail groove, and the heat-resistant sealing ring is an asbestos packing.

[0009] Preferably, the high-temperature heat-insulating layer is a high-temperature heat-insulating asbestos mesh.

[0010] Preferably, the refractory filling block is a refractory cement block.

[0011] Preferably, a burner connecting plate is fixedly arranged on the right side surface of the annular cover body, and a burner is fixedly installed on the burner connecting plate.

[0012] Preferably, a tangential feeding channel is arranged on the upper side of the left end of the cylindrical furnace body.

[0013] Compared with the prior art, the present utility model has the following beneficial effects: The overall structure of the present utility model is compact. The high-temperature heat-insulating layer and the refractory filling block are reasonably arranged in the annular cavity formed between the annular cover body and the annular door plate. The high-temperature heat-insulating layer is covered by the refractory filling block, which can effectively isolate the high temperature in the combustion furnace from being conducted to the heat-insulating refractory furnace door. It can not only effectively maintain heat during the combustion of the burner, but also prevent the furnace door from bulging and deforming due to high temperature and further causing the burner to fall off, ensuring the stable operation of the asphalt mixture regeneration combustion furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description can also be obtained by those of ordinary skill in the art without creative efforts based on these drawings to obtain other drawings.

[0015] Figure 1 It is a three-dimensional view of the overall structure of an embodiment of the present utility model.

[0016] Figure 2 It is a cross-sectional view of the structure of the heat-insulating refractory furnace door in an embodiment of the present utility model.

[0017] Figure 3 It is an enlarged view of the structure of the sealing groove in an embodiment of the present utility model.

[0018] Figure 4 It is an enlarged view of the structure of the furnace door locking device in an embodiment of the present utility model.

[0019] Markings in the figure:

[0020] 1. Cylindrical furnace body, 11. Left locking flange, 111. Left locking groove, 12. Tangential feed channel;

[0021] 2. Frame;

[0022] 3. Heat-insulating refractory furnace door, 31. Ring-shaped door panel, 311. Right locking flange, 312. Sealing groove, 313. Right locking groove, 32. Ring-shaped cover body, 33. High-temperature heat-insulating layer, 34. Refractory filling block, 35. Heat-resistant sealing ring, 36. Burner connecting plate;

[0023] 41. Connecting pin shaft, 42. Connecting pin sleeve;

[0024] 5. Furnace door locking device, 51. Swing screw, 52. Locking nut, 53. T-shaped handle;

[0025] 6. Burner. Detailed implementation manners

[0026] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions in the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model. In order to make the above features and advantages of the present utility model more obvious and understandable, specific embodiments are hereby given and detailed descriptions are made below in conjunction with the accompanying drawings.

[0027] As Figures 1 to 4 shown, an embodiment of the present utility model provides a mobile asphalt mixture stirring and regenerating combustion furnace, which includes a cylindrical furnace body 1. The cylindrical furnace body 1 is fixedly installed on a frame 2. A heat-insulating refractory furnace door 3 that can be opened and closed is installed at the right end of the cylindrical furnace body 1. The heat-insulating refractory furnace door 3 includes a ring-shaped door panel 31 and a ring-shaped cover body 32. The ring-shaped cover body 32 is fixedly arranged (such as by welding) on the right side surface of the ring-shaped door panel 31. An annular cavity is formed between the ring-shaped cover body 32 and the ring-shaped door panel 31. A high-temperature heat-insulating layer 33 is fixedly laid on both the outer peripheral side and the right side of the annular cavity. A refractory filling block 34 is arranged between the inner peripheral side and the left side of the annular cavity and the high-temperature heat-insulating layer 33. Among them, the high-temperature heat-insulating layer 33 is preferably but not limited to a high-temperature heat-insulating asbestos mesh, and the refractory filling block 34 is preferably but not limited to a refractory cement block. The refractory cement is poured into the ring-shaped cover body 32 to cover the high-temperature heat-insulating asbestos mesh. When pouring the refractory cement, bubbles should be eliminated in time by vibration. It has high fire resistance and good heat-insulating effect.

[0028] In this embodiment, in order to improve the sealing performance of the combustion furnace, a left locking flange 11 is provided at the right end of the cylindrical furnace body 1. An outer edge portion of the annular door plate 31 forms a right locking flange 311 that is in sealing cooperation with the left locking flange 11. At least one circle of sealing grooves 312, such as two circles of sealing grooves 312, is provided on the left side surface of the right locking flange 311, providing better sealing performance. A heat-resistant sealing ring 35 is embedded in the sealing groove 312. Among them, the contact surfaces of the left locking flange 11 and the right locking flange 311 have good sealing performance. Among them, the sealing groove 312 is preferably, but not limited to, a dovetail groove, which is tight outside and loose inside, and can better hold the heat-resistant sealing ring 35, preventing it from falling off and effectively isolating heat loss. The heat-resistant sealing ring 35 is preferably, but not limited to, asbestos packing, which has good sealing performance and heat resistance.

[0029] In this embodiment, a rear side portion at the left end of the heat-insulating refractory furnace door 3 is movably hinged to a rear side portion at the right end of the cylindrical furnace body 1 through the cooperation of a connecting pin shaft 41 and a connecting pin sleeve 42. A plurality of spaced-apart furnace door locking devices 5 are installed on the front side of the right end portion of the cylindrical furnace body 1. A plurality of left locking grooves 111 corresponding to the furnace door locking devices 5 are provided on the front side of the left locking flange 11. A plurality of right locking grooves 313 corresponding to the furnace door locking devices 5 are provided on the front side of the right locking flange 311. Through the cooperation structure of the connecting pin shaft 41 and the connecting pin sleeve 42, the smooth opening and closing of the heat-insulating refractory furnace door 3 can be ensured, facilitating a series of subsequent maintenance work.

[0030] In this embodiment, the furnace door locking device 5 preferably, but not limited to, includes a swing screw 51, a locking nut 52, and a T-shaped handle 53. One end of the swing screw 51 is movably hinged to the left and right of the cylindrical furnace body 1. The locking nut 52 is sleeved on the other end of the swing screw 51. The T-shaped handle 53 is coaxially and fixedly welded to the locking nut 52 for convenient rotation operation. The swing screw 51 can swing to the right and be inserted into the left locking groove 111 and the right locking groove 313. When locking, the locking nut 52 is tightly pressed against the right locking flange 311 by rotating the T-shaped handle 53, and the heat-insulating refractory furnace door 3 can be closed. When opening the heat-insulating refractory furnace door 3, the locking nut 52 is separated from the right locking flange 311 by rotating the T-shaped handle 53 in the reverse direction, and the swing screw 51 can swing to the left and leave the left locking groove 111 and the right locking groove 313, and the heat-insulating refractory furnace door 3 can be opened.

[0031] In this embodiment, a tangential feed channel 12 is provided on the upper side of the left end of the cylindrical furnace body 1. When the asphalt recycled material enters the cylindrical furnace body 1 from the tangential feed channel 12, it can effectively absorb the heat of the side wall of the combustion furnace, avoiding affecting the flame of the burner 6. A burner connecting plate 36 is fixedly provided on the right side surface of the annular cover body 32. During manufacturing, holes are drilled and tapped on the burner connecting plate 36 first, and then the burner connecting plate 36 is fixedly welded to the right side surface of the annular cover body 32. The burner 6 is fixedly installed on the burner connecting plate 36. In this embodiment, the burner 6 is installed by using the burner connecting plate 36, which can further prevent the high-temperature deformation of the furnace door from affecting the installation stability of the burner 6.

[0032] In this embodiment, a high-temperature resistant heat insulation layer 33 and refractory filling blocks 34 are provided in the annular cavity formed between the annular cover body 32 and the annular door plate 31, and the high-temperature resistant heat insulation layer 33 is covered by the refractory filling blocks 34, which can effectively isolate the high temperature in the combustion furnace from being conducted to the heat-insulating refractory furnace door 3. It can not only effectively keep warm during the combustion process of the burner 6, but also prevent the furnace door from bulging and deforming due to high temperature and further causing the burner 6 to fall off, ensuring the stable operation of the asphalt mixture regeneration combustion furnace.

[0033] It should be particularly noted that the orientation words such as "front", "rear", "left", and "right" in the present utility model are only for convenience of description, and do not actually limit the technical solution of the present utility model.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present utility model.

Claims

1. A mobile asphalt mixture stirring and regeneration combustion furnace, characterized in that: It includes a cylindrical furnace body, which is fixedly mounted on a frame, and an insulated refractory furnace door that can be opened and closed is installed at the right end of the cylindrical furnace body, and the insulated refractory furnace door includes an annular door plate and an annular cover body, and the annular cover body is fixedly arranged on the right side of the annular door plate, and an annular cavity is formed between the annular cover body and the annular door plate, and a high-temperature resistant heat-insulating layer is fixedly laid on the outer peripheral side and the right side of the annular cavity, and a refractory filling block is arranged between the inner peripheral side and the left side of the annular cavity and the high-temperature resistant heat-insulating layer.

2. The mobile asphalt mixture stirring and regeneration combustion furnace according to claim 1 is characterized in that: A left locking flange is arranged at the right end of the cylindrical furnace body, and the outer edge of the annular door plate forms a right locking flange which is sealed with the left locking flange. At least one circle of sealing groove is opened on the left side surface of the right locking flange, and a heat-resistant sealing ring is embedded in the sealing groove.

3. The mobile asphalt mixture stirring and regenerating combustion furnace according to claim 2 is characterized in that: The left rear side of the thermal insulation and refractory furnace door is movably hinged to the right rear side of the cylindrical furnace body through the cooperation of a connecting pin shaft and a connecting pin sleeve, and a plurality of furnace door locking devices distributed at intervals are installed on the front side of the right end of the cylindrical furnace body. The front side of the left locking flange is provided with a plurality of left locking grooves corresponding to the furnace door locking devices, and the front side of the right locking flange is provided with a plurality of right locking grooves corresponding to the furnace door locking devices.

4. The mobile asphalt mixture stirring regeneration combustion furnace according to claim 3 is characterized in that: The furnace door locking device includes a swing screw, a locking nut and a T-shaped handle. One end of the swing screw is hinged to the cylindrical furnace body for left and right movements. The locking nut is sleeved on the other end of the swing screw. The T-shaped handle is coaxially fixed and welded to the locking nut. The swing screw can swing to the right and be inserted into the left locking groove and the right locking groove.

5. The mobile asphalt mixture stirring regeneration combustion furnace according to claim 2 is characterized in that: The sealing groove is a dovetail groove, and the heat-resistant sealing ring is an asbestos packing.

6. The mobile asphalt mixture stirring and regenerating combustion furnace according to claim 1 is characterized in that: The high temperature resistant heat insulating layer is a high temperature resistant heat insulating asbestos mesh.

7. The mobile asphalt mixture stirring regeneration combustion furnace according to claim 1 is characterized in that: The refractory filling blocks are refractory cement blocks.

8. The mobile asphalt mixture stirring regeneration combustion furnace according to claim 1 is characterized in that: A burner connecting plate is fixedly provided on the right side surface of the annular cover body, and a burner is fixedly installed on the burner connecting plate.

9. The mobile asphalt mixture stirring and regenerating combustion furnace according to claim 1 is characterized in that: A tangential feed channel is arranged on the upper side of the left end portion of the cylindrical furnace body.

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