Asphalt concrete production apparatus and preparation process thereof

Abstract

The application discloses asphalt concrete production equipment and a preparation process thereof and relates to the technical field of asphalt concrete mixing. The asphalt concrete production equipment comprises a pretreatment mechanism and a pretreatment box installed on the outer side of the pretreatment mechanism. The bottom of the pretreatment mechanism is provided with a mixing device, and the top of the mixing device is provided with a second gear protective cover. The pretreatment mechanism comprises a first gear protective cover which is fixedly installed on the top of the pretreatment box. Through the inclined mode, the raw materials can be crushed, the inclined feature of the crushing tool holder can be utilized to realize the up-and-down movement of the raw materials, the transverse crushing tool and the longitudinal crushing tool can be utilized to crush the small-particle raw materials, the angle of the crushing tool holder, the transverse crushing tool and the longitudinal crushing tool can be adjusted according to the size of the caked raw materials, the crushing efficiency of the raw materials can be improved, and the crushing tool holder, the transverse crushing tool and the longitudinal crushing tool can be protected.

Description

Technical Field

[0001] This invention relates to the field of asphalt concrete mixing technology, specifically to asphalt concrete production equipment and its preparation process. Background Technology

[0002] Asphalt concrete, commonly known as asphalt concrete, is a mixture made by artificially selecting mineral materials (crushed stone or crushed gravel, stone chips or sand, mineral powder, etc.) with a certain gradation and mixing them with a certain proportion of road asphalt materials under strict control conditions. Due to its good impermeability and deformation adaptability, asphalt concrete has been increasingly widely used in earth-rock dams and is mainly used in road surfaces. In its production process, the materials are mixed and then a mixing device is used.

[0003] CN116785956A discloses an asphalt concrete production mixing equipment. Through a linked structure, by controlling the continuous extension and retraction of the electric telescopic rod, it not only controls the rotation and reciprocating motion of the mixing shaft and mixing blade assembly, achieving thorough mixing of the asphalt concrete in the bottom box without dead angles, but also continuously adjusts the angle of the mixing blades using centrifugal force, further improving the mixing effect of the asphalt concrete. Simultaneously, while the mixing blade angle is constantly changing, the adjustment module controls the reciprocating motion of the screening box relative to the bottom box, thus keeping the first and second filters in motion, improving the screening effect of the concrete raw materials. The entire device has a high degree of automation. Compared with traditional concrete mixing devices, this device achieves integrated screening and mixing, improving the quality of the final produced asphalt concrete. However, this patent still has the following problems in practical use:

[0004] Although this asphalt concrete production and mixing equipment can control the rotation and reciprocating motion of the mixing shaft and mixing blade assembly by controlling the continuous extension and retraction of the electric telescopic rod, thus achieving thorough mixing of the asphalt concrete in the bottom box, it cannot pre-treat the raw materials during the mixing process. This results in uneven mixing due to the large amount of raw materials being mixed at one time, leading to clumping of the asphalt, sand, and mineral powder materials, or separation of coarse and fine aggregates. At the same time, uneven temperature of the mixture and improper control of the heating temperature of the asphalt or aggregates cause some materials to "stick" (too high temperature) or "whiten" (too low temperature), affecting the adhesion and compaction effect.

[0005] Therefore, asphalt concrete production equipment and its preparation process are proposed to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide asphalt concrete production equipment and its preparation process to solve the problems mentioned in the background art, where the raw materials for asphalt concrete cannot be pre-treated during mixing, resulting in uneven mixing due to the large amount of raw materials mixed at one time, leading to white aggregate, clumping of sand and mineral powder raw materials, or separation of coarse and fine aggregates. At the same time, uneven temperature of the mixture and improper control of the heating temperature of asphalt or aggregates lead to some materials becoming "pasty" (too high temperature) or "white aggregate" (too low temperature), affecting the adhesion and compaction effect.

[0007] To achieve the above objectives, the present invention provides the following technical solution: asphalt concrete production equipment and its preparation process, including a pretreatment mechanism, wherein the pretreatment mechanism includes a pretreatment box;

[0008] The bottom of the pretreatment mechanism is equipped with a mixing device, and the mixing device includes a second gear protective cover;

[0009] Also includes:

[0010] The pretreatment mechanism includes a first gear protective cover, which is fixedly installed on the top of the pretreatment box, and a stirring motor is fixedly installed on one side of the top of the first gear protective cover.

[0011] The output end of the stirring motor is fixedly connected to a stirring main gear, and a stirring slave gear is meshed with one side of the stirring main gear;

[0012] The stirring mechanism is equipped with an adjustable motor fixedly mounted on top of the gear. An adjustable rotating rod is fixedly connected to the output end of the adjustable motor. Several bevel gear transmission assemblies are fixedly mounted on the outer side of the adjustable rotating rod. An adjustable rotating shaft is fixedly mounted on the outer side of the bevel gear transmission assemblies. A crushing blade holder is fixedly mounted on the outer side of the adjustable rotating shaft.

[0013] Preferably, a transverse crushing blade is fixedly installed inside the crushing blade holder, and longitudinal crushing blades are symmetrically installed on the outer side of the transverse crushing blade. A rotating connecting sleeve is fixedly installed at the bottom of the stirring gear, and a rotating sleeve is fixedly installed at the bottom of the rotating connecting sleeve. The rotating sleeve is rotatably connected to the adjusting rotating shaft, and a plurality of first cleaning spiral blades are fixedly installed on the outer bottom of the rotating sleeve.

[0014] By adopting the above technical solution, the raw materials (sand and mineral powder) for asphalt concrete mixture are fed into the pretreatment box through the feed pipe on one side of the top. An adjusting motor drives the adjusting rotating rod and the bevel gear transmission assembly to rotate, which in turn drives the adjusting rotating shaft and the crusher blade holder. When crushing large, agglomerated particles, the crusher blade holder is rotated to a horizontal position to facilitate crushing. When the volume of the crushed particles decreases, the crusher blade holder is rotated to an inclined position. This inclination not only crushes the raw materials but also allows for vertical movement of the materials using the inclined shape of the crusher blade holder, and utilizes the horizontal and vertical crushing blades... The crusher pulverizes small particles of raw materials. The angles of the crusher holder, transverse crusher, and longitudinal crusher can be adjusted according to the size of the agglomerated materials, improving crushing efficiency. Simultaneously, it protects the crusher holder, transverse crusher, and longitudinal crusher, preventing accelerated wear or damage that could lead to uneven mixing, clumping, or separation of coarse and fine aggregates. The stirring motor is started, driving the main stirring gear. Utilizing the meshing connection between the main stirring gear and the driven stirring gear, the driven gear drives the rotating connecting sleeve and rotating sleeve to rotate. The first cleaning spiral blade cleans the bottom of the pretreatment tank.

[0015] Preferably, a plurality of stirring frames are fixedly installed on the outer side of the rotating sleeve, the stirring frames are rotatably connected to the adjusting rotating shaft, a plurality of spring sliding rods are fixedly connected to the outer side of the stirring frames, a damping slider is fixedly installed at the end of the spring sliding rod, and a spring telescopic rod is fixedly installed on the outer side of the damping slider.

[0016] By adopting the above technical solution, the raw materials are pre-mixed using a stirring frame. By increasing the rotation speed and centrifugal force, the spring sleeve drives the vertical cleaning scraper to move under the elastic force of the spring telescopic rod and the connecting spring.

[0017] Preferably, a connecting spring is fixedly installed on the outer side of the damping slider near the spring telescopic rod, and a spring mounting plate is fixedly installed on the end of the spring telescopic rod and the connecting spring away from the damping slider. A spring sleeve is fixedly installed on the outer side of the spring mounting plate. The spring sleeve is slidably connected to the spring sliding rod and the damping slider respectively, and a vertical cleaning scraper is fixedly installed on the outer side of the spring sleeve.

[0018] By adopting the above technical solution, the inner wall of the pretreatment tank can be cleaned using a vertical cleaning scraper, avoiding the waste of raw material residue.

[0019] Preferably, a first heating box is fixedly installed on the outside of the pretreatment box, a material discharge hole is opened on one side of the bottom of the pretreatment box, a feed pipe is fixedly installed on one side of the top of the pretreatment box, and a first discharge valve is fixedly installed on the outside of the bottom of the pretreatment box.

[0020] By adopting the above technical solution, the raw materials can be preheated through the first heating box, and the raw materials can be heated evenly through pre-mixing. This avoids improper control of the heating temperature of asphalt or aggregate, which could lead to some materials becoming "pasty" (too high temperature) or "white" (too low temperature), affecting the adhesion and compaction effect.

[0021] Preferably, the mixing equipment includes a mixing chamber, which is fixedly installed at the bottom of the pretreatment chamber. A second heating chamber is fixedly installed on the outside of the mixing chamber. A second discharge valve is fixedly installed on the outside of the bottom of the mixing chamber. Several support legs are fixedly installed at the bottom of the mixing chamber. An asphalt pump pipe is fixedly installed at the center of the bottom of the mixing chamber.

[0022] By adopting the above technical solution, the pretreated raw materials are heated using a second heating box, thereby further improving the heating effect of the raw materials.

[0023] Preferably, the second gear protective cover is fixedly installed on the top inner side of the mixing box, and a switching motor is fixedly installed on one side of the top of the second gear protective cover. The output end of the switching motor is fixedly connected to a switching main gear, and a switching gear ring is meshed on one side of the switching main gear. A perforated screen is fixedly installed inside the switching gear ring, and a linkage shaft is rotatably connected to the center position inside the perforated screen.

[0024] By adopting the above technical solution, the switching motor drives the switching main gear to rotate. The meshing connection between the switching main gear and the switching gear ring causes the switching gear ring to drive the porous screen to rotate. The porous screen can then be used to screen raw materials of different grades.

[0025] Preferably, the linkage shaft is fixedly installed at the bottom of the rotating sleeve, a vertical connecting pipe is fixedly installed at the bottom of the linkage shaft, the vertical connecting pipe is rotatably connected to the asphalt pump pipe, a number of horizontal connecting pipes are fixedly installed on the outside of the vertical connecting pipe, a number of anti-clogging nozzles are fixedly installed on the outside of the horizontal connecting pipes, an anti-clogging bracket is fixedly installed inside the anti-clogging nozzle, and an anti-clogging sleeve is fixedly installed on the top of the anti-clogging bracket.

[0026] By adopting the above technical solution, the rotating sleeve drives the linkage shaft and the vertical connecting pipe to rotate, and the asphalt is pumped into the interior of the vertical and horizontal connecting pipes through the asphalt pump pipe. Under the action of pumping pressure, the anti-clogging sealing plug can be separated from the end of the anti-clogging nozzle, so that the asphalt can be evenly entered into the interior of the mixing box.

[0027] Preferably, an anti-clogging spring is fixedly installed inside the anti-clogging sleeve, an anti-clogging sliding rod is fixedly installed on the top of the anti-clogging spring, an anti-clogging sealing plug is fixedly installed on the top of the anti-clogging sliding rod, the anti-clogging sealing plug is fitted and connected to the end of the anti-clogging nozzle, inclined stirring blades are symmetrically installed on the outside of the vertical connecting pipe, stirring tripods are fixedly installed on the top and bottom outside of the vertical connecting pipe, a second cleaning spiral blade is fixedly installed between the two stirring tripods, and the second cleaning spiral blade is fitted and connected to the inner wall of the mixing box.

[0028] By adopting the above technical solution, the raw materials are uniformly mixed through the inclined mixing blades, mixing tripod, and second cleaning spiral blade, thereby improving the mixing effect of the asphalt raw materials. After pumping is completed, the anti-clogging sealing plug is made to fit and connect with the anti-clogging nozzle under the action of the anti-clogging spring, thereby sealing the anti-clogging nozzle and preventing the raw materials from entering the interior of the anti-clogging nozzle and causing the anti-clogging nozzle to become blocked.

[0029] Compared with the prior art, the beneficial effects of this invention are as follows: This asphalt concrete production equipment and its preparation process, through tilting, not only crushes the raw materials but also utilizes the tilted characteristics of the crusher holder to achieve vertical movement of the raw materials. Furthermore, it uses transverse and longitudinal crushing blades to pulverize small particles of raw materials. The angles of the crusher holder, transverse and longitudinal crushing blades can be adjusted according to the size of the agglomerated raw materials, improving the crushing efficiency while protecting the crusher holder, transverse and longitudinal crushing blades. After pumping is completed, the anti-clogging spring causes the anti-clogging sealing plug to fit snugly against the anti-clogging nozzle, sealing the nozzle and preventing raw materials from entering and clogging it. The specific details are as follows:

[0030] 1. By setting up a pretreatment mechanism, the raw materials (sand and mineral powder) for asphalt concrete mixture can be fed into the pretreatment box through the feed pipe on one side of the top. The adjusting motor drives the adjusting rotating rod and bevel gear transmission assembly to rotate, which in turn drives the adjusting rotating shaft and the crusher blade holder. When crushing large, agglomerated particles, the crusher blade holder is rotated to a horizontal position for crushing. When the volume of the crushed particles decreases, the crusher blade holder is rotated to an inclined position. This inclination not only crushes the raw materials but also allows for vertical movement of the materials. The transverse and longitudinal crushing blades further pulverize the smaller particles. The angles of the crusher blade holder, transverse, and longitudinal crushing blades can be adjusted according to the size of the agglomerated raw materials, improving crushing efficiency while protecting the crusher blade holder, transverse, and longitudinal crushing blades to prevent accelerated crushing. Wear or damage to the crusher frame, transverse crusher, and longitudinal crusher can cause problems such as white residue, clumping, or separation of coarse and fine aggregates during later raw material mixing. Starting the mixing motor drives the main mixing gear to rotate. Utilizing the meshing connection between the main and driven gears, the driven gear drives the rotating connecting sleeve and rotating sleeve to rotate. The first cleaning spiral blade cleans the bottom of the pretreatment box, while the mixing frame pre-mixes the raw materials. Increasing the rotation speed increases centrifugal force, and under the elastic force of the spring extension rod and connecting spring, the spring sleeve moves the vertical cleaning scraper. The vertical cleaning scraper cleans the inner wall of the pretreatment box, preventing material residue and waste. The first heating box preheats the raw materials, and pre-mixing ensures uniform heating, preventing improper temperature control of asphalt or aggregates from causing some materials to "stick" (overheated) or "white residue" (underheated), affecting adhesion and compaction.

[0031] 2. By setting up a mixing equipment, not only can the pre-treated raw materials be heated using a second heating box, further improving the heating effect, but also the switching motor drives the switching main gear to rotate. Utilizing the meshing connection between the switching main gear and the switching gear ring, the switching gear ring drives the porous screen to rotate. The porous screen allows for screening of raw materials with different gradations. Simultaneously, the rotating sleeve drives the linkage shaft and vertical connecting pipe to rotate, pumping asphalt into the interior of the vertical and horizontal connecting pipes through the asphalt pump pipe. Under the pumping pressure, the anti-clogging sealing plug separates from the end of the anti-clogging nozzle, allowing the asphalt to enter the mixing chamber evenly. The inclined mixing blades, mixing tripod, and second cleaning spiral blade ensure uniform mixing of the raw materials, improving the mixing effect of the asphalt raw materials. After pumping is complete, the anti-clogging spring causes the anti-clogging sealing plug to fit tightly against the anti-clogging nozzle, sealing the nozzle and preventing raw materials from entering and causing blockage. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0033] Figure 2 This is a three-dimensional structural diagram of the pretreatment mechanism in this invention;

[0034] Figure 3 This is a three-dimensional structural diagram of the pretreatment box cross-section in this invention;

[0035] Figure 4 This is a three-dimensional structural diagram of the stirring main gear and the stirring driven gear in this invention;

[0036] Figure 5 This is a three-dimensional structural diagram of the first cleaning spiral blade and stirring frame in this invention;

[0037] Figure 6 This is a three-dimensional cross-sectional structural diagram of the spring sleeve in this invention;

[0038] Figure 7 This is a schematic diagram of the three-dimensional structure of the crusher holder in this invention;

[0039] Figure 8 This is a three-dimensional structural diagram of the mixing equipment in this invention;

[0040] Figure 9 This is a three-dimensional structural diagram of the mixing tank cross-section in this invention;

[0041] Figure 10 This is a three-dimensional structural diagram of the stirring tripod and the second cleaning spiral blade in this invention;

[0042] Figure 11 This is a three-dimensional cross-sectional structural diagram of the anti-clogging nozzle in this invention.

[0043] In the diagram: 1. Pretreatment mechanism; 101. Pretreatment box; 102. First heating box; 103. Discharge hole; 104. Feed pipe; 105. First discharge valve; 106. First gear protective cover; 107. Stirring motor; 108. Stirring main gear; 109. Stirring driven gear; 110. Rotating connecting sleeve; 111. Rotating sleeve; 112. First cleaning spiral blade; 113. Stirring frame; 114. Spring sliding rod; 115. Damping slider; 116. Spring telescopic rod; 117. Connecting spring; 118. Spring mounting plate; 119. Spring sleeve; 120. Vertical cleaning scraper; 121. Adjusting motor; 122. Adjusting rotating rod; 123. Bevel gear transmission assembly; 124. Adjusting rotating shaft; 125. Crusher blade holder; 126. Horizontal crusher blade; 127. Longitudinal crusher blade; 2. Mixing equipment; 201. Mixing box; 202. Second heating box; 203. Second discharge valve; 204. Support leg; 205. Asphalt pump pipe; 206. Second gear protective cover; 207. Switching motor; 208. Switching main gear; 209. Switching gear ring; 210. Perforated screen; 211. Linkage shaft; 212. Vertical connecting pipe; 213. Horizontal connecting pipe; 214. Anti-clogging nozzle; 215. Anti-clogging bracket; 216. Anti-clogging sleeve; 217. Anti-clogging spring; 218. Anti-clogging sliding rod; 219. Anti-clogging sealing plug; 220. Inclined mixing blade; 221. Mixing tripod; 222. Second cleaning spiral blade. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 are within the scope of protection of the present invention.

[0045] Please see Figures 1-7 , Figure 9This invention provides a technical solution: asphalt concrete production equipment and its preparation process, including a pretreatment mechanism 1, which includes a pretreatment box 101. A mixing device 2 is installed at the bottom of the pretreatment mechanism 1, and the mixing device 2 includes a second gear protective cover 206. The pretreatment mechanism 1 includes a first gear protective cover 106, which is fixedly installed on the top of the pretreatment box 101. A stirring motor 107 is fixedly installed on one side of the top of the first gear protective cover 106. The output end of the stirring motor 107 is fixedly connected to a stirring main gear 108, and one side of the stirring main gear 108 is meshed with a stirring agitator. A mixing gear 109 is included, with an adjustable motor 121 fixedly mounted on its top. An adjustable rotating rod 122 is fixedly connected to the output end of the adjustable motor 121. Several bevel gear transmission assemblies 123 are fixedly mounted on the outer side of the adjustable rotating rod 122. An adjustable rotating shaft 124 is fixedly mounted on the outer side of the bevel gear transmission assemblies 123. A crusher holder 125 is fixedly mounted on the outer side of the adjustable rotating shaft 124. A transverse crusher 126 is fixedly mounted inside the crusher holder 125. Longitudinal crushers 127 are symmetrically mounted on the outer side of the transverse crusher 126. The feed pipe 104 on one side of the top of the pretreatment box 101 is used for feeding. The raw materials for asphalt concrete mixing, sand and mineral powder, are placed inside the pretreatment box 101. The adjusting motor 121 drives the adjusting rotating rod 122 and the bevel gear transmission assembly 123 to rotate, which in turn drives the adjusting rotating shaft 124 and the crusher holder 125 to rotate. When crushing large, agglomerated particles, the crusher holder 125 is rotated to a horizontal position to facilitate crushing. When the volume of the crushed particles decreases, the crusher holder 125 is rotated to an inclined position. This tilting not only crushes the raw materials but also utilizes the tilting mechanism of the crusher holder 125. The inclined shape allows for the vertical movement of raw materials, and the transverse crushing blade 126 and longitudinal crushing blade 127 are used to crush small particles of raw materials. The angles of the crushing blade holder 125, transverse crushing blade 126 and longitudinal crushing blade 127 can be adjusted according to the size of the agglomerated raw materials, improving the crushing efficiency. At the same time, it can protect the crushing blade holder 125, transverse crushing blade 126 and longitudinal crushing blade 127, avoiding accelerated wear or damage to the crushing blade holder 125, transverse crushing blade 126 and longitudinal crushing blade 127, which could lead to white material, agglomeration or separation of coarse and fine aggregates in the later stage of raw material mixing.

[0046] Please see Figures 2-7A rotating connecting sleeve 110 is fixedly installed at the bottom of the gear 109. A rotating sleeve 111 is fixedly installed at the bottom of the rotating connecting sleeve 110. The rotating sleeve 111 is rotatably connected to the adjusting rotating shaft 124. Several first cleaning spiral blades 112 are fixedly installed on the outer bottom of the rotating sleeve 111. Several stirring frames 113 are fixedly installed on the outer side of the rotating sleeve 111. The stirring frames 113 are rotatably connected to the adjusting rotating shaft 124. Several spring sliding rods 114 are fixedly connected to the outer side of the stirring frames 113. Damping sliders 115 are fixedly installed at the ends of the spring sliding rods 114. A spring telescopic rod 116 is fixedly installed on the outer side of the damping slider 115. A connecting spring 117 is fixedly installed on the outer side of the damping slider 115 near the spring telescopic rod 116. A spring mounting plate 118 is fixedly installed on the end of the spring telescopic rod 116 and the connecting spring 117 away from the damping slider 115. A spring sleeve 119 is fixedly installed on the outer side of the spring mounting plate 118. The spring sleeve 119 is slidably connected to the spring sliding rod 114 and the damping slider 115 respectively. A vertical cleaning scraper 120 is fixedly installed on the outer side of the spring sleeve 119. A first heating box 1 is fixedly installed on the outer side of the pretreatment box 101. 02. A material discharge hole 103 is provided on one side of the bottom of the pretreatment box 101. A feed pipe 104 is fixedly installed on one side of the top of the pretreatment box 101. A first discharge valve 105 is fixedly installed on the outer side of the bottom of the pretreatment box 101. When the stirring motor 107 is started, it drives the stirring main gear 108 to rotate. Utilizing the meshing connection between the stirring main gear 108 and the stirring driven gear 109, the stirring driven gear 109 drives the rotating connecting sleeve 110 and the rotating sleeve 111 to rotate. The first cleaning spiral blade 112 can clean the bottom of the pretreatment box 101. At the same time, the stirring frame 113 can achieve... The premixing of raw materials increases the rotation speed and centrifugal force. Under the elastic force of the spring telescopic rod 116 and the connecting spring 117, the spring sleeve 119 drives the vertical cleaning scraper 120 to move. The vertical cleaning scraper 120 can clean the inner wall of the pretreatment box 101 to avoid the waste of raw materials. The first heating box 102 can preheat the raw materials, and the premixing method can make the raw materials heat evenly. This avoids improper temperature control of asphalt or aggregate heating, which may cause the temperature of some materials to be too high for "paste" or too low for "white material", affecting the adhesion and compaction effect.

[0047] Please see Figure 1 , Figures 8-11The mixing equipment 2 includes a mixing chamber 201, which is fixedly installed at the bottom of the pretreatment chamber 101. A second heating chamber 202 is fixedly installed on the outside of the mixing chamber 201. A second discharge valve 203 is fixedly installed on the outside of the bottom of the mixing chamber 201. Several support legs 204 are fixedly installed on the bottom of the mixing chamber 201. An asphalt pump pipe 205 is fixedly installed at the center of the bottom of the mixing chamber 201. A second gear protective cover 206 is fixedly installed on the inner top of the mixing chamber 201. A switching motor 207 is fixedly installed on one side of the top of the second gear protective cover 206. A switching main gear 208 is fixedly connected to the output end of the switching motor 207. A switching gear ring 209 is meshed on one side of the switching main gear 208. A perforated screen 210 is fixedly installed inside the device. A linkage shaft 211 is rotatably connected to the center of the perforated screen 210. The linkage shaft 211 is fixedly installed at the bottom of the rotating sleeve 111. A vertical connecting pipe 212 is fixedly installed at the bottom of the linkage shaft 211. The vertical connecting pipe 212 is rotatably connected to the asphalt pump pipe 205. Several horizontal connecting pipes 213 are fixedly installed on the outside of the vertical connecting pipe 212. Several anti-clogging nozzles 214 are fixedly installed on the outside of the horizontal connecting pipes 213. An anti-clogging bracket 215 is fixedly installed inside the anti-clogging nozzle 214. An anti-clogging sleeve 216 is fixedly installed on the top of the anti-clogging bracket 215. An anti-clogging spring 217 is fixedly installed inside the anti-clogging sleeve 216. An anti-clogging spring 217 is fixedly installed on the top of the anti-clogging spring 217. An anti-clogging sliding rod 218 is provided, with an anti-clogging sealing plug 219 fixedly installed at its top. The anti-clogging sealing plug 219 is fitted to the end of the anti-clogging nozzle 214. Inclined stirring blades 220 are symmetrically installed on the outer side of the vertical connecting pipe 212. Stirring tripods 221 are fixedly installed on the top and bottom outer sides of the vertical connecting pipe 212. A second cleaning spiral blade 222 is fixedly installed between the two stirring tripods 221. The second cleaning spiral blade 222 is fitted to the inner wall of the mixing box 201. The pre-treated raw materials are heated by the second heating box 202 to further improve the heating effect of the raw materials. At the same time, the switching motor 207 drives the switching main gear 208 to rotate. The switching main gear 208 and the switching gear ring 209 are connected. The interlocking connection between the gear rings allows the switching gear ring 209 to drive the porous screen 210 to rotate, enabling the screening of raw materials with different gradations. Simultaneously, the rotating sleeve 111 drives the linkage shaft 211 and the vertical connecting pipe 212 to rotate, pumping asphalt into the vertical connecting pipe 212 and the horizontal connecting pipe 213 via the asphalt pump pipe 205. Under the pumping pressure, the anti-clogging sealing plug 219 separates from the end of the anti-clogging nozzle 214, allowing the asphalt to enter the mixing tank 201 evenly. The inclined mixing blade 220, the mixing tripod 221, and the second cleaning spiral blade 222 achieve uniform mixing of the raw materials, improving the mixing effect of the asphalt raw materials. After pumping is completed, the anti-clogging spring 217...The anti-clogging sealing plug 219 is fitted and connected to the anti-clogging nozzle 214 to seal the nozzle 214, preventing raw materials from entering the nozzle 214 and causing blockage.

[0048] Working principle: Before using this asphalt concrete production equipment and its preparation process, it is necessary to check the overall condition of the device to ensure it can operate normally. Figure 1 - Figure 11 As shown, firstly, the raw materials for the asphalt concrete mixture, sand and mineral powder, are fed into the pretreatment box 101 through the feed pipe 104 on one side of the top. The adjusting motor 121 drives the adjusting rotating rod 122 and the bevel gear transmission assembly 123 to rotate, which in turn drives the adjusting rotating shaft 124 and the crushing blade holder 125 to rotate. When crushing large, agglomerated particles, the crushing blade holder 125 is rotated to a horizontal position to crush the large particles. When the volume of the crushed particles decreases, the crushing blade holder 125 is rotated to an inclined position. This tilting method not only crushes the raw materials but also... The crusher can utilize the inclined shape of the crusher holder 125 to move the raw material up and down, and use the transverse crusher 126 and the longitudinal crusher 127 to crush small particles of raw material. It can adjust the angle of the crusher holder 125, the transverse crusher 126 and the longitudinal crusher 127 according to the size of the agglomerated raw material, thereby improving the crushing efficiency. At the same time, it can protect the crusher holder 125, the transverse crusher 126 and the longitudinal crusher 127, and avoid accelerating the wear or damage of the crusher holder 125, the transverse crusher 126 and the longitudinal crusher 127, so as to prevent the phenomenon of white material, agglomeration or separation of coarse and fine aggregates in the later stage of raw material mixing.

[0049] Secondly, the stirring motor 107 is started to drive the stirring main gear 108 to rotate. Utilizing the meshing connection between the stirring main gear 108 and the stirring driven gear 109, the stirring driven gear 109 drives the rotating connecting sleeve 110 and the rotating sleeve 111 to rotate. The first cleaning spiral blade 112 can clean the bottom of the pretreatment box 101, while the stirring frame 113 realizes the premixing of raw materials. By increasing the rotation speed, the centrifugal force is increased. Under the elastic force of the spring telescopic rod 116 and the connecting spring 117, the spring sleeve 119 drives the vertical cleaning scraper 120 to move. The vertical cleaning scraper 120 can clean the inner wall of the pretreatment box 101 to avoid the phenomenon of raw material residue and waste. The first heating box 102 can preheat the raw materials, and the premixing method can make the raw materials heat evenly, avoiding improper control of the heating temperature of asphalt or aggregate, which would cause the temperature of some materials to be too high for "paste" or too low for "white material", affecting the adhesion and compaction effect.

[0050] Finally, the pretreated raw materials are heated using the second heating box 202 to further improve the heating effect. Simultaneously, the switching motor 207 drives the switching main gear 208 to rotate. Utilizing the meshing connection between the switching main gear 208 and the switching gear ring 209, the switching gear ring 209 drives the porous screen 210 to rotate. The porous screen 210 can screen raw materials of different gradations. At the same time, the rotating sleeve 111 drives the linkage shaft 211 and the vertical connecting pipe 212 to rotate, pumping asphalt into the vertical connecting pipe 212 and the horizontal connecting pipe 213 through the asphalt pump pipe 205. Inside the mixing tank 201, under the action of pumping pressure, the anti-clogging sealing plug 219 can be separated from the end of the anti-clogging nozzle 214, allowing asphalt to enter the mixing tank 201 evenly. The inclined mixing blade 220, the mixing tripod 221, and the second cleaning spiral blade 222 achieve uniform mixing of raw materials, improving the mixing effect of asphalt raw materials. After pumping is completed, under the action of the anti-clogging spring 217, the anti-clogging sealing plug 219 is brought into contact with the anti-clogging nozzle 214, realizing the sealing of the anti-clogging nozzle 214 and preventing raw materials from entering the interior of the anti-clogging nozzle 214, thus preventing the anti-clogging nozzle 214 from becoming blocked.

[0051] 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 embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An asphalt concrete production equipment, including a pretreatment unit (1), and the pretreatment unit (1) includes a pretreatment box (101). The bottom of the pretreatment mechanism (1) is provided with a mixing device (2), and the mixing device (2) includes a second gear guard (206). Its features are, Also includes: The pretreatment mechanism (1) includes a first gear guard (106), which is fixedly installed on the top of the pretreatment box (101), and a stirring motor (107) is fixedly installed on one side of the top of the first gear guard (106). Among them, the output end of the stirring motor (107) is fixedly connected to the stirring main gear (108), and the stirring main gear (108) is meshed with the stirring slave gear (109) on one side. Among them, an adjusting motor (121) is fixedly installed on the top of the stirring gear (109), and an adjusting rotating rod (122) is fixedly connected to the output end of the adjusting motor (121). Several bevel gear transmission assemblies (123) are fixedly installed on the outside of the adjusting rotating rod (122), an adjusting rotating shaft (124) is fixedly installed on the outside of the bevel gear transmission assembly (123), and a crushing blade holder (125) is fixedly installed on the outside of the adjusting rotating shaft (124). The mixing equipment (2) includes a mixing tank (201), an asphalt pump pipe (205) is fixedly installed at the bottom center of the mixing tank (201), a second gear guard (206) is fixedly installed on the top inner side of the mixing tank (201), a switching motor (207) is fixedly installed on one side of the top of the second gear guard (206), a switching main gear (208) is fixedly connected to the output end of the switching motor (207), a switching gear ring (209) is meshed on one side of the switching main gear (208), a perforated screen (210) is fixedly installed inside the switching gear ring (209), and a linkage shaft (211) is rotatably connected to the center of the perforated screen (210). The linkage shaft (211) is fixedly installed at the bottom of the rotating sleeve (111). A vertical connecting pipe (212) is fixedly installed at the bottom of the linkage shaft (211). The vertical connecting pipe (212) is rotatably connected to the asphalt pump pipe (205). Several horizontal connecting pipes (213) are fixedly installed on the outside of the vertical connecting pipe (212). Several anti-clogging nozzles (214) are fixedly installed on the outside of the horizontal connecting pipes (213). An anti-clogging bracket (215) is fixedly installed inside the anti-clogging nozzle (214). An anti-clogging sleeve (216) is fixedly installed on the top of the anti-clogging bracket (215).

2. The asphalt concrete production equipment according to claim 1, characterized in that: A transverse crusher (126) is fixedly installed inside the crusher holder (125), and a longitudinal crusher (127) is symmetrically installed on the outer side of the transverse crusher (126). A rotating connecting sleeve (110) is fixedly installed at the bottom of the stirring gear (109), and a rotating sleeve (111) is fixedly installed at the bottom of the rotating connecting sleeve (110). The rotating sleeve (111) is rotatably connected to the adjusting rotating shaft (124), and a plurality of first cleaning spiral blades (112) are fixedly installed on the outer bottom of the rotating sleeve (111).

3. The asphalt concrete production equipment according to claim 2, characterized in that: A plurality of stirring frames (113) are fixedly installed on the outer side of the rotating sleeve (111). The stirring frames (113) are rotatably connected to the adjusting rotating shaft (124). A plurality of spring sliding rods (114) are fixedly connected on the outer side of the stirring frames (113). A damping slider (115) is fixedly installed at the end of the spring sliding rod (114). A spring telescopic rod (116) is fixedly installed on the outer side of the damping slider (115).

4. The asphalt concrete production equipment according to claim 3, characterized in that: A connecting spring (117) is fixedly installed on the outer side of the damping slider (115) near the spring telescopic rod (116). A spring mounting plate (118) is fixedly installed on the end of the spring telescopic rod (116) and the connecting spring (117) away from the damping slider (115). A spring sleeve (119) is fixedly installed on the outer side of the spring mounting plate (118). The spring sleeve (119) is slidably connected to the spring sliding rod (114) and the damping slider (115) respectively. A vertical cleaning scraper (120) is fixedly installed on the outer side of the spring sleeve (119).

5. The asphalt concrete production equipment according to claim 4, characterized in that: A first heating box (102) is fixedly installed on the outside of the pretreatment box (101). A material discharge hole (103) is opened on one side of the bottom of the pretreatment box (101). A feed pipe (104) is fixedly installed on one side of the top of the pretreatment box (101). A first discharge valve (105) is fixedly installed on the outside of the bottom of the pretreatment box (101).

6. The asphalt concrete production equipment according to claim 5, characterized in that: The mixing box (201) is fixedly installed at the bottom of the pretreatment box (101). A second heating box (202) is fixedly installed on the outside of the mixing box (201). A second discharge valve (203) is fixedly installed on the outside of the bottom of the mixing box (201). Several support legs (204) are fixedly installed at the bottom of the mixing box (201).

7. The asphalt concrete production equipment according to claim 6, characterized in that: An anti-blocking spring (217) is fixedly installed inside the anti-blocking sleeve (216). An anti-blocking sliding rod (218) is fixedly installed on the top of the anti-blocking spring (217). An anti-blocking sealing plug (219) is fixedly installed on the top of the anti-blocking sliding rod (218). The anti-blocking sealing plug (219) is fitted and connected to the end of the anti-blocking nozzle (214). Inclined stirring blades (220) are symmetrically installed on the outside of the vertical connecting pipe (212). Stirring tripods (221) are fixedly installed on the top and bottom outside of the vertical connecting pipe (212). A second cleaning spiral blade (222) is fixedly installed between the two stirring tripods (221). The second cleaning spiral blade (222) is fitted and connected to the inner wall of the mixing box (201).

8. A method for preparing asphalt concrete production equipment, using the asphalt concrete production equipment as described in claim 7, characterized in that, The preparation method steps are as follows: Step 1: Using the feed pipe (104) on one side of the top of the pretreatment box (101), the raw materials for the asphalt concrete mixture are put into the interior of the pretreatment box (101). The adjusting motor (121) drives the adjusting rotating rod (122) and the bevel gear transmission assembly (123) to rotate, causing the bevel gear transmission assembly (123) to drive the adjusting rotating shaft (124) and the crushing blade holder (125) to rotate. When crushing large, agglomerated raw materials, the crushing blade holder (125) is rotated to a horizontal position, thus enabling the crushing of large particles. When the volume of the large particles decreases after crushing, the... The crusher (125) is rotated to an inclined state. By tilting, it can not only crush the raw material, but also move the raw material up and down by taking advantage of the inclination of the crusher (125). The transverse crusher (126) and the longitudinal crusher (127) are used to crush small particles of raw material. The angles of the crusher (125), transverse crusher (126) and longitudinal crusher (127) can be adjusted according to the size of the agglomerated raw material. The crusher (125), transverse crusher (126) and longitudinal crusher (127) can also be protected. Step 2: Start the stirring motor (107) to drive the stirring main gear (108) to rotate. Utilize the meshing connection between the stirring main gear (108) and the stirring slave gear (109) to drive the rotating connecting sleeve (110) and rotating sleeve (111) to rotate. The first cleaning spiral blade (112) can clean the bottom of the pretreatment box (101). At the same time, the stirring frame (113) can realize the pre-mixing of raw materials. By increasing the rotation speed, the centrifugal force is increased. Under the elastic force of the spring telescopic rod (116) and the connecting spring (117), the spring sleeve (119) drives the vertical cleaning scraper (120) to move. The vertical cleaning scraper (120) can clean the inner wall of the pretreatment box (101). The first heating box (102) can preheat the raw materials. Step 3: The pre-treated raw materials are heated using the second heating box (202) to further improve the heating effect. At the same time, the switching motor (207) drives the switching main gear (208) to rotate. Taking advantage of the meshing connection between the switching main gear (208) and the switching gear ring (209), the switching gear ring (209) drives the porous screen (210) to rotate. The porous screen (210) can screen raw materials of different grades. Meanwhile, the rotating sleeve (111) drives the linkage shaft (211) and the vertical connecting pipe (212) to rotate. Asphalt is pumped into the vertical connecting pipe (212) and water through the asphalt pump pipe (205). Inside the flat connecting pipe (213), under the action of pumping pressure, the anti-blocking sealing plug (219) can be separated from the end of the anti-blocking nozzle (214), so that the asphalt can be evenly entered into the mixing tank (201). The raw materials are evenly mixed by the inclined mixing blade (220), the mixing tripod (221), and the second cleaning spiral blade (222). After pumping is completed, under the action of the anti-blocking spring (217), the anti-blocking sealing plug (219) is made to fit and connect with the anti-blocking nozzle (214), so as to seal the anti-blocking nozzle (214) and prevent the raw materials from entering the interior of the anti-blocking nozzle (214) and causing the anti-blocking nozzle (214) to be blocked.

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