Cement stabilized macadam recycling device and use method thereof

Abstract

The invention discloses a cement stabilized macadam recycling device and a using method thereof, relates to the technical field of cement processing, and aims to solve the problem that existing grinding equipment is single in grinding mode and uneven in granularity grinding. The cement powder processing device comprises a supporting seat, a bottom cylinder arranged above the supporting seat, a discharge valve connected with the bottom cylinder, and a driving assembly. Materials are treated in a rapid coarse grinding and fine grinding mode, the temperature in the device can be effectively reduced through gas emission, and during gas circulation, external gas enters the device along the feeding cover, so that the material treatment efficiency of the first coarse grinding assembly, the second coarse grinding assembly and the first grinding assembly is improved, and the material treatment efficiency is improved. The device can fully guarantee the particle uniformity and the crushing effect of cement powder raw materials, and meanwhile, the processing quality of cement powder is guaranteed in a physical cooling mode.

Description

Technical Field

[0001] The present invention relates to the technical field of cement processing, and more specifically, to a device for recycling cement stabilized macadam and a method for using the same. Background Art

[0002] Chinese patent document (CN114749233B) discloses a device for recycling cement stabilized macadam and a method for using the same, which states in the specification that "it includes a housing with a feed inlet and a discharge outlet, and a first empty slot and a second empty slot are also provided inside the housing; a first crushing mechanism, a second crushing mechanism and a third crushing mechanism are sequentially arranged from top to bottom inside the housing for crushing the macadam multiple times and screening; a driving mechanism is also provided on the housing; for this device for recycling cement stabilized macadam and its using method, after the macadam raw material is put into the housing from the feed inlet, it will successively pass through the crushing processes of the first crushing mechanism, the second crushing mechanism and the third crushing mechanism, so that the macadam is fully crushed, and finally through the screening of a specially designed filter screen, cement production raw material powder with uniform particle size and stable quality is produced". However, in actual use, it still only adopts a multi-stage crushing processing method, which is difficult to control the temperature during the reprocessing of cement, and it is easy for cement fragments to block the self-rotation between multiple crushing rolls, resulting in difficulties in ensuring the quality and processing efficiency of the processed cement powder.

[0003] Traditional cement crushing and recycling equipment uses a single-stage grinding equipment, which is difficult to crush cement recycling materials to the ideal particle size, resulting in uneven particle size distribution of the product, affecting the solubility and functionality of cement powder, and it is easy to overheat due to friction when using traditional grinding equipment, causing the internal temperature of the equipment to reach above 60°C, which affects the quality of the processed cement powder.

[0004] In view of this, we propose a device for recycling cement stabilized macadam and a method for using the same. Summary of the Invention

[0005] The purpose of the present invention is to provide a device for recycling cement stabilized macadam and a method for using the same, so as to solve the problem of uneven particle size grinding existing in the single grinding method of existing grinding equipment, and at the same time, to solve the technical problem that the temperature is too high during the processing due to the operation of internal equipment, which affects the processing quality of cement powder.

[0006] To solve the above technical problems, the present invention provides the following technical solution: A device for recycling cement stabilized macadam includes

[0007] The base mechanism includes a support base, a bottom cylinder disposed above the support base, a discharge valve connected to the bottom cylinder, and a drive assembly, wherein the drive assembly is connected to the bottom cylinder; and, the fine grinding mechanism includes a movable cylinder, a first toothed ring disposed outside the movable cylinder, a driven assembly, a first grinding assembly, and a windshield assembly connected to the movable cylinder, wherein the driven assembly is connected to the movable cylinder, and the first grinding assembly is located below the driven assembly; and, the rough grinding mechanism includes a top cylinder, a positioning frame connected to the outside of the top cylinder, a driver located outside the top cylinder, a switch disposed outside the top cylinder, a first bevel gear connected to the driver, a feed hopper, a first rough grinding assembly, a second rough grinding assembly, and an aggregate assembly connected to the second rough grinding assembly, wherein the feed hopper is located inside the top cylinder, the first rough grinding assembly is located outside the feed hopper, the second rough grinding assembly is disposed above the aggregate assembly, and the aggregate assembly is snap-fitted inside the top cylinder.

[0008] The present invention not only processes materials through rapid rough grinding and fine grinding, but also effectively reduces the temperature inside the device through gas discharge. When the gas circulates, external gas enters along the feed hopper, thereby accelerating the processing efficiency of the first rough grinding assembly, the second rough grinding assembly, and the first grinding assembly on the materials, enabling the device to fully guarantee the uniformity and crushing effect of the cement powder raw material particles. At the same time, the quality of cement powder processing is guaranteed by means of physical cooling.

[0009] Preferably, the top end of the support base is fixedly connected to the bottom end of the bottom cylinder, the outer wall of the bottom cylinder is fixedly connected to the drive assembly, and the bottom cylinder is in communication with the discharge valve;

[0010] The drive assembly includes a mounting frame, a motor fixedly connected inside the mounting frame, and an output shaft of the motor fixedly connected to a gear;

[0011] The gear meshes with the first toothed ring, and the mounting frame is fixedly connected to the outer wall of the bottom cylinder.

[0012] Preferably, the outer wall of the movable cylinder is fixedly connected to the inner wall of the first toothed ring, the inner wall of the movable cylinder is snap-fitted with two driven assemblies, and both of the two driven assemblies are located inside the first grinding assembly. The inner wall of the movable cylinder is fixedly connected to the windshield assembly;

[0013] The movable cylinder is sleeved above the top cylinder.

[0014] Preferably, the outer part of the top cylinder is fixedly connected with a plurality of positioning frames. A driver is fixedly connected to the outer part of the top cylinder. The driver passes through the top cylinder and is fixedly connected with a first bevel gear. The outer wall of the top cylinder is fixedly connected with a switch. The first bevel gear meshes with a first rough grinding assembly and a second rough grinding assembly respectively. The inner wall of the top cylinder is fixedly connected with a feeding cover. The bottom end of the feeding cover is communicated with a first grinding assembly. The second rough grinding assembly is fixedly connected above an aggregate assembly. The aggregate assembly is clamped in the top cylinder;

[0015] The other end of the positioning frame is fixedly connected with a bottom cylinder. The aggregate assembly is communicated with a wind shield assembly.

[0016] Preferably, the driven assembly includes a first bearing. A rotating shaft is sleeved in the first bearing. One end of the rotating shaft is fixedly connected with a second bevel gear. A plurality of ventilation holes are formed in one side of the second bevel gear. An exhaust fan is fixedly connected to the outer part of the rotating shaft;

[0017] The first bearing is clamped in the inner wall of the movable cylinder. The second bevel gear and the exhaust fan are both located in the wind shield assembly. The second bevel gear meshes with the first grinding assembly.

[0018] Preferably, the first grinding assembly includes a grinding shell. A guide ring is fixedly connected to the lower part of the inner wall of the grinding shell. A filter screen is fixedly connected in the grinding shell. The top end of the filter screen is fixedly connected with a guide block. The filter screen is communicated with the grinding shell;

[0019] The inner wall of the grinding shell meshes with two second bevel gears. The lower part of the grinding shell is fixedly connected with the bottom cylinder. The lower part of the grinding shell is communicated with a discharge valve.

[0020] Preferably, the wind shield assembly includes a wind shield. A plurality of brackets are fixedly connected to the outer part of the wind shield. A connecting frame is fixedly connected in the wind shield. A spiral blade is fixedly connected above the connecting frame. A sealing bearing is clamped above the wind shield;

[0021] The wind shield is fixedly connected with the movable cylinder through a plurality of brackets. The aggregate assembly is located in the sealing bearing.

[0022] Preferably, the first rough grinding assembly includes a first grinding block. A second bearing is clamped above the first grinding block. A second toothed ring is fixedly connected to the outer part of the first grinding block. A feeding port is formed above the first grinding block. A plurality of first grinding teeth are formed below the first grinding block;

[0023] The first grinding block is connected with the feeding cover through the second bearing. The feeding cover is communicated with the feeding port. The second toothed ring meshes with the first bevel gear;

[0024] The second rough grinding component includes a second grinding block, a third gear ring is fixedly connected to the outside of the second grinding block, and a plurality of second grinding teeth are arranged above the second grinding block;

[0025] Both the first grinding teeth and the second grinding teeth are designed in an arc shape. The second rough grinding component is fixedly connected above the aggregate component, and the second grinding block is meshed with the first bevel gear through the third gear ring.

[0026] Preferably, the aggregate component includes a positioning plate, a sleeve is sleeved outside the positioning plate, a plurality of through holes are opened above the positioning plate, a collection cover is fixedly connected below the positioning plate, a plurality of air holes are opened outside the collection cover, and all the air holes are designed to be inclined. A trachea is fixedly connected below the collection cover, and the trachea is communicated with the collection cover;

[0027] The upper part of the positioning plate is fixedly connected to the lower part of the second grinding block. The sleeve is clamped inside the top cylinder. The spiral blade is located inside the trachea, and the sealing bearing is clamped outside the trachea.

[0028] A method for recycling cement crushed stones, based on the above-mentioned device for recycling cement stabilized crushed stones, includes the following steps:

[0029] S1. During use, the pretreated cement crushed stones are added into the rough grinding mechanism;

[0030] S2. After being processed by the rough grinding mechanism, the cement crushed stones will automatically enter the fine grinding mechanism and wait for processing. After processing, the cement powder will be discharged along the base mechanism.

[0031] Compared with the prior art, the beneficial effects of the present invention are:

[0032] 1. In the present invention, by designing a driven assembly, a first rough grinding assembly, a second rough grinding assembly, and a windshield assembly, when the cement powder raw material enters the first rough grinding assembly along the feed cover, the driver is started, and the first bevel gear is driven to operate by the driver. At this time, the first rough grinding assembly and the second rough grinding assembly will rotate in opposite directions to complete the rough grinding process of the cement powder raw material. After the treatment, the cement powder raw material will enter the windshield assembly along the aggregate assembly under the action of centrifugal force for fine grinding. During fine grinding, the cement powder raw material will enter between the two driven assemblies along the windshield assembly and fall above the first grinding assembly to complete the fine grinding process of the cement powder raw material. At the same time, since the driven assembly will first extract the outside gas and discharge it towards the middle during operation, and a large amount of gas will be discharged downward under the blockage of the windshield assembly, the gas above will accelerate downward movement. This makes the device not only process the material through rapid rough grinding and fine grinding methods, but also effectively reduce the temperature inside the device through gas discharge. And when the gas circulates, the outside gas enters along the feed cover, thereby accelerating the processing efficiency of the first rough grinding assembly, the second rough grinding assembly, and the first grinding assembly on the material, ensuring that the device can fully guarantee the particle uniformity and crushing effect of the cement powder raw material, and at the same time guarantee the quality of cement powder processing by means of physical cooling.

[0033] 2. In the present invention, by designing a windshield assembly and an aggregate assembly, when the motor and the driver operate, the first grinding block and the second grinding block connected by the second gear and the third toothed ring rotate, thereby performing rough grinding on the cement powder raw material falling between the first grinding block and the second grinding block. When the ground material enters the air pipe along the collection cover, the spiral blade connected to the windshield cover will rotate in the opposite direction to it, thereby accelerating the discharge of the material into the grinding shell. And in cooperation with the first grinding teeth designed under the first grinding block and the second grinding teeth above the second grinding block, it can not only ensure the grinding and crushing effect of the cement powder raw material under the shearing force during its rotation, but also accelerate the discharge of the material, avoiding the situation of material blockage inside the device, and improving the processing efficiency of the device for cement powder raw material.

[0034] 3. The present invention also designs a wind shield assembly, a driven assembly and a first grinding assembly. Since the motor drives the first toothed ring to rotate through gears during operation, the two second bevel gears revolve and rotate simultaneously. During the rotation process of the rotating shaft, the exhaust fan can be synchronously driven to rotate, so that a large amount of gas blows towards the filter screen, accelerating the discharge of the ground cement powder raw materials. Due to the air pressure change, the outside gas will enter the first grinding block along the feeding cover and push the material to flow into the collection cover at an accelerated speed, ensuring that the device can reduce the temperature during material processing to a certain extent by accelerating the gas flow, and can cooperate with an external cold air machine to further control the temperature. Through the above method, the cost of processing cement powder can be effectively saved, the use of large cooling machines and various grinding equipment can be reduced, and the quality of the cement powder processed by the device can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0036] Figure 2 is a schematic diagram of the planar structure of the present invention;

[0037] Figure 3 is a schematic diagram of the sectional structure of the base mechanism of the present invention;

[0038] Figure 4 is a schematic diagram of the sectional structure of the movable cylinder of the present invention;

[0039] Figure 5 is a schematic diagram of the sectional structure of the first grinding assembly of the present invention;

[0040] Figure 6 is a schematic diagram of the sectional structure of the wind shield assembly of the present invention;

[0041] Figure 7 is a schematic diagram of the sectional structure of the top cylinder of the present invention;

[0042] Figure 8 is a schematic diagram of the sectional structure of the first rough grinding assembly of the present invention.

[0043] Explanation of the reference numerals in the drawings:

[0044] 1. Base mechanism; 2. Fine grinding mechanism; 3. Rough grinding mechanism;

[0045] 101. Support seat; 102. Bottom cylinder; 103. Discharge valve; 104. Driving assembly;

[0046] 201. Movable cylinder; 202. First toothed ring; 203. Driven assembly; 204. First grinding assembly; 205. Wind shield assembly;

[0047] 301. Top cylinder; 302. Positioning frame; 303. Driver; 304. Switch; 305. First bevel gear; 306. Feeding cover; 307. First rough grinding assembly; 308. Second rough grinding assembly; 309. Aggregate assembly;

[0048] 1041. Mounting frame; 1042. Motor; 1043. Gear;

[0049] 2031. First bearing; 2032. Rotating shaft; 2033. Second bevel gear; 2034. Vent hole; 2035. Exhaust fan;

[0050] 2041. Grinding shell; 2042. Material guiding ring; 2043. Filter screen; 2044. Material guiding block;

[0051] 2051. Windshield; 2052. Bracket; 2053. Sealed bearing; 2054. Connecting frame; 2055. Spiral blade;

[0052] 3071. First grinding block; 3072. Second bearing; 3073. Second toothed ring; 3074. Discharge opening; 3075. First grinding tooth;

[0053] 3081. Second grinding block; 3082. Second grinding tooth; 3083. Third toothed ring;

[0054] 3091. Positioning plate; 3092. Sleeve; 3093. Through hole; 3094. Collection cover; 3095. Air hole; 3096. Air pipe. Detailed implementation mode

[0055] As Figures 1 to 8 shown, a device for recycling cement stabilized macadam according to the present invention includes

[0056] The base mechanism 1 includes a support base 101, a bottom cylinder 102 disposed above the support base 101, a discharge valve 103 connected to the bottom cylinder 102, and a drive assembly 104, wherein the drive assembly 104 is connected to the bottom cylinder 102; and, the fine grinding mechanism 2 includes a movable cylinder 201, a first gear ring 202 disposed outside the movable cylinder 201, a driven assembly 203, a first grinding assembly 204, and a wind shield assembly 205 connected to the movable cylinder 201, wherein the driven assembly 203 is connected to the movable cylinder 201, and the first grinding assembly 204 is located below the driven assembly 203; and, the rough grinding mechanism 3 includes a top cylinder 301, a positioning frame 302 connected to the outside of the top cylinder 301, a driver 303 located outside the top cylinder 301, a switch 304 disposed outside the top cylinder 301, a first bevel gear 305 connected to the driver 303, a feed hopper 306, a first rough grinding assembly 307, a second rough grinding assembly 308, and an aggregate assembly 309 connected to the second rough grinding assembly 308, wherein the feed hopper 306 is located inside the top cylinder 301, the first rough grinding assembly 307 is located outside the feed hopper 306, the second rough grinding assembly 308 is disposed above the aggregate assembly 309, and the aggregate assembly 309 is snap-fitted inside the top cylinder 301. By designing the driven assembly 203, the first rough grinding assembly 307, the second rough grinding assembly 308, and the wind shield assembly 205, when the cement powder raw material enters the first rough grinding assembly 307 along the feed hopper 306, the driver 303 is started, and the first bevel gear 305 is driven to operate by the driver 303. At this time, the first rough grinding assembly 307 and the second rough grinding assembly 308 will rotate in opposite directions to complete the rough grinding process of the cement powder raw material. After the treatment, the cement powder raw material will enter the wind shield assembly 205 along the aggregate assembly 309 under the action of centrifugal force for fine grinding. During fine grinding, the cement powder raw material will enter between the two driven assemblies 203 along the wind shield assembly 205 and fall above the first grinding assembly 204 to complete the fine grinding process of the cement powder raw material. At the same time, since the driven assembly 203 will first extract the outside gas and discharge it towards the middle during operation, and under the blocking of the wind shield assembly 205, a large amount of gas is discharged downward, and the gas above accelerates downward movement, the device not only processes the material through rapid rough grinding and fine grinding methods, but also effectively reduces the temperature inside the device through gas discharge. And when the gas flows, the outside gas enters along the feed hopper 306, thereby accelerating the processing efficiency of the first rough grinding assembly 307, the second rough grinding assembly 308, and the first grinding assembly 204 on the material, enabling the device to fully guarantee the particle uniformity and crushing effect of the cement powder raw material, and at the same time guarantee the quality of cement powder processing by means of physical cooling.

[0057] In an embodiment of the present invention, the top end of the support base 101 is fixedly connected to the bottom end of the bottom cylinder 102. The outer wall of the bottom cylinder 102 is fixedly connected to the drive assembly 104. The bottom cylinder 102 is in communication with the discharge valve 103. The drive assembly 104 includes a mounting frame 1041. A motor 1042 is fixedly connected inside the mounting frame 1041. The output shaft of the motor 1042 is fixedly connected to a gear 1043. The gear 1043 meshes with a first toothed ring 202. The mounting frame 1041 is fixedly connected to the outer wall of the bottom cylinder 102. The outer wall of the movable cylinder 201 is fixedly connected to the inner wall of the first toothed ring 202. The inner wall of the movable cylinder 201 is engaged with two driven assemblies 203, and both of the two driven assemblies 203 are located inside the first grinding assembly 204. The inner wall of the movable cylinder 201 is fixedly connected to a wind shielding assembly 205. The movable cylinder 201 is sleeved above the top cylinder 301. By designing the wind shielding assembly 205 and the material collecting assembly 309, when the motor 1042 and the driver 303 operate, the first grinding block 3071 and the second grinding block 3081 connected by the second gear 1043 and the third toothed ring 3083 rotate, so as to roughly grind the cement powder raw material falling between the first grinding block 3071 and the second grinding block 3081. When the ground material enters the air pipe 3096 along the collecting cover 3094, the spiral blade 2055 connected to the wind shielding cover 2051 will rotate in the opposite direction thereto, so as to accelerate the discharge of the material into the grinding shell 2041. And in cooperation with the first grinding teeth 3075 below the first grinding block 3071 and the second grinding teeth 3082 above the second grinding block 3081, it can not only ensure the grinding and crushing effect of the cement powder raw material under the shearing force during its rotation, but also accelerate the discharge of the material, avoid the situation of material blockage inside the device, and improve the efficiency of the device for processing the cement powder raw material.

[0058] In an embodiment of the present invention, the outer of the top cylinder 301 is fixedly connected to a plurality of positioning frames 302. A driver 303 is fixedly connected to the outer of the top cylinder 301. The driver 303 passes through the top cylinder 301 and is fixedly connected to the first bevel gear 305. The outer wall of the top cylinder 301 is fixedly connected to the switch 304. The first bevel gear 305 meshes with the first rough grinding assembly 307 and the second rough grinding assembly 308 respectively. The inner wall of the top cylinder 301 is fixedly connected to the feeding cover 306. The bottom end of the feeding cover 306 is communicated with the first grinding assembly 204. The second rough grinding assembly 308 is fixedly connected above the aggregate assembly 309. The aggregate assembly 309 is clamped in the top cylinder 301. The other end of the positioning frame 302 is fixedly connected to the bottom cylinder 102. The aggregate assembly 309 is communicated with the wind shield assembly 205. The driven assembly 203 includes a first bearing 2031. A rotating shaft 2032 is sleeved in the first bearing 2031. One end of the rotating shaft 2032 is fixedly connected to the second bevel gear 2033. A plurality of ventilation holes 2034 are formed on one side of the second bevel gear 2033. An exhaust fan 2035 is fixedly connected to the outside of the rotating shaft 2032. The first bearing 2031 is clamped on the inner wall of the movable cylinder 201. The second bevel gear 2033 and the exhaust fan 2035 are both located in the wind shield assembly 205. The second bevel gear 2033 meshes with the first grinding assembly 204. By designing the texture matching the second bevel gear 2033 in the grinding shell 2041, when the second bevel gear 2033 revolves driven by the movable cylinder 201, the second bevel gear 2033 can repeatedly extrude the cement powder raw material, increasing the friction force with the cement powder raw material and ensuring the grinding effect on the cement powder raw material. At the same time, the second bevel gear 2033 rotates self, thereby driving the exhaust fan 2035 to rotate, improving the resource utilization efficiency of the device;

[0059] Through the cooperation of the driven assembly 203 and the first grinding assembly 204, the situation that the cement fragments rotate self inside the device and are difficult to be broken can be effectively avoided.

[0060] As another embodiment of the present invention, the first grinding assembly 204 includes a grinding shell 2041. A material guiding ring 2042 is fixedly connected to the lower part of the inner wall of the grinding shell 2041. A filter screen 2043 is fixedly connected inside the grinding shell 2041. The top end of the filter screen 2043 is fixedly connected to a material guiding block 2044. The filter screen 2043 is communicated with the grinding shell 2041. The inner wall of the grinding shell 2041 meshes with two second bevel gears 2033. The lower part of the grinding shell 2041 is fixedly connected to the bottom cylinder 102. The lower part of the grinding shell 2041 is communicated with a discharge valve 103. The wind shielding assembly 205 includes a wind shielding cover 2051. A number of brackets 2052 are fixedly connected to the outside of the wind shielding cover 2051. A connecting frame 2054 is fixedly connected inside the wind shielding cover 2051. A spiral blade 2055 is fixedly connected above the connecting frame 2054. A sealing bearing 2053 is clamped above the wind shielding cover 2051. The wind shielding cover 2051 is fixedly connected to the movable cylinder 201 through a number of brackets 2052. The aggregate assembly 309 is located inside the sealing bearing 2053. By designing the wind shielding assembly 205, the driven assembly 203 and the first grinding assembly 204, since the motor 1042 drives the first toothed ring 202 to rotate through the gear 1043 during operation, the two second bevel gears 2033 revolve and rotate simultaneously. The exhaust fan 2035 can be synchronously driven to rotate during the rotation of the rotating shaft 2032, so that a large amount of gas is blown towards the filter screen 2043, accelerating the discharge of the ground cement powder raw material. Due to the change in air pressure, the outside gas will enter the first grinding block 3071 along the feeding cover 306 and push the material to accelerate the flow into the collecting cover 3094, ensuring that the device can reduce the temperature during the processing of the material to a certain extent by accelerating the gas flow, and can cooperate with an external cold air machine to further control the temperature. Through the above method, the cost of processing cement powder can be effectively saved, the use of large cooling machines and various grinding equipment can be reduced, and the quality of the cement powder processed by the device can be guaranteed.

[0061] As another embodiment of the present invention, the first rough grinding assembly 307 includes a first grinding block 3071. A second bearing 3072 is clamped above the first grinding block 3071. A second toothed ring 3073 is fixedly connected to the outside of the first grinding block 3071. A material inlet 3074 is provided above the first grinding block 3071. A plurality of first grinding teeth 3075 are provided below the first grinding block 3071. The first grinding block 3071 is connected to the material inlet cover 306 through the second bearing 3072. The material inlet cover 306 is communicated with the material inlet 3074. The second toothed ring 3073 is meshed with the first bevel gear 305. The second rough grinding assembly 308 includes a second grinding block 3081. A third toothed ring 3083 is fixedly connected to the outside of the second grinding block 3081. A plurality of second grinding teeth 3082 are provided above the second grinding block 3081. Both the first grinding teeth 3075 and the second grinding teeth 3082 are designed in an arc shape. The second rough grinding assembly 308 is fixedly connected above the aggregate assembly 309. The second grinding block 3081 is meshed with the first bevel gear 305 through the third toothed ring 3083. The aggregate assembly 309 includes a positioning plate 3091. A sleeve 3092 is sleeved outside the positioning plate 3091. A plurality of through holes 3093 are provided above the positioning plate 3091. A collection cover 3094 is fixedly connected below the positioning plate 3091. A plurality of air holes 3095 are provided outside the collection cover 3094. And the plurality of air holes 3095 are all designed in an inclined manner. An air pipe 3096 is fixedly connected below the collection cover 3094. The air pipe 3096 is communicated with the collection cover 3094. The upper part of the positioning plate 3091 is fixedly connected to the lower part of the second grinding block 3081. The sleeve 3092 is clamped inside the inner wall of the top cylinder 301. The spiral blade 2055 is located inside the air pipe 3096. The sealing bearing 2053 is clamped outside the air pipe 3096. By designing the air holes 3095 in an inclined manner outside the collection cover 3094, since the weight of the cement powder raw material is greater than the weight of the air, therefore, after the cement powder raw material enters the collection cover 3094, it will enter the air pipe 3096 along the collection cover 3094 under the action of gravity, while the gas will enter the movable cylinder 201 along the air holes 3095. On the one hand, it can prevent the cement powder raw material from blocking the air holes 3095 or leaking out. On the other hand, it can prevent the situation that the gas inside the device is difficult to circulate due to the isolation of the positioning plate 3091.

[0062] Working principle: This embodiment provides a device for recycling cement stabilized macadam and its usage method. When in use, when the cement powder raw material enters the first coarse grinding assembly 307 along the feeding cover 306, the driver 303 is started, and the first bevel gear 305 is driven to operate by the driver 303. At this time, the first coarse grinding assembly 307 and the second coarse grinding assembly 308 will rotate in opposite directions to complete the coarse grinding process of the cement powder raw material. After the treatment, the cement powder raw material will enter the wind shielding assembly 205 along the aggregate assembly 309 under the action of centrifugal force for fine grinding. During fine grinding, the cement powder raw material will enter between the two driven assemblies 203 along the wind shielding assembly 205 and fall above the first grinding assembly 204 to complete the fine grinding process of the cement powder raw material. At the same time, since the driven assembly 203 will first extract the outer gas and discharge it towards the middle during operation, and under the blocking of the wind shielding assembly 205, a large amount of gas will be discharged downward, and the gas above will accelerate downward movement;

[0063] The motor 1042 and the driver 303 operate, and the first grinding block 3071 and the second grinding block 3081 connected by the second gear 1043 and the third toothed ring 3083 rotate, so as to coarsely grind the cement powder raw material falling between the first grinding block 3071 and the second grinding block 3081. And because the second grinding block 3081 below rotates in the opposite direction to the rotation direction of the motor 1042, when the ground material enters the air pipe 3096 along the collection cover 3094, the spiral blade 2055 connected to the wind shielding cover 2051 will rotate in the opposite direction to it, so as to accelerate the discharge of the material into the grinding shell 2041;

[0064] Since the motor 1042 will drive the first toothed ring 202 to rotate through the gear 1043 during operation, the movable cylinder 201 drives the two second bevel gears 2033 to rotate. And because the two second bevel gears 2033 are both engaged in the grinding shell 2041, the two second bevel gears 2033 will rotate around their axes while revolving, so that the rotating shaft 2032 can drive the exhaust fan 2035 to rotate synchronously during rotation, so as to extract the gas inside and outside the movable cylinder 201 and discharge it towards the inside. And through the guidance of the wind shielding cover 2051, a large amount of gas is blown towards the filter screen 2043, so that the ground cement powder raw material is discharged at an accelerated speed. And due to the change in air pressure, the outside gas will enter the first grinding block 3071 along the feeding cover 306 and push the material to flow into the collection cover 3094 at an accelerated speed.

[0065] Since the weight of the cement powder raw material is greater than the weight of the air, therefore, after the cement powder raw material enters the collection cover 3094, it will enter the air pipe 3096 along the collection cover 3094 under the action of gravity, while the gas will enter the movable cylinder 201 along the air holes 3095.

[0066] The embodiments disclosed in the present invention are preferred embodiments, but not limited thereto. Those of ordinary skill in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. As long as they do not depart from the spirit of the present invention, they are within the protection scope of the present invention.

Claims

1. A device for recycling cement stabilized macadam, characterized in that, including, a base mechanism (1), comprising a support base (101), a bottom cylinder (102) disposed above the support base (101), a discharge valve (103) connected to the bottom cylinder (102), and a drive assembly (104), wherein the drive assembly (104) is connected to the bottom cylinder (102); and, a fine grinding mechanism (2), comprising a movable cylinder (201), a first toothed ring (202) disposed outside the movable cylinder (201), a driven assembly (203), a first grinding assembly (204), and a windshield assembly (205) connected to the movable cylinder (201), wherein the driven assembly (203) is connected to the movable cylinder (201), and the first grinding assembly (204) is located below the driven assembly (203); and, a rough grinding mechanism (3), comprising a top cylinder (301), a positioning frame (302) connected to the outside of the top cylinder (301), a driver (303) located outside the top cylinder (301), a switch (304) disposed outside the top cylinder (301), a first bevel gear (305) connected to the driver (303), a feed cover (306), a first rough grinding assembly (307), a second rough grinding assembly (308), and an aggregate assembly (309) connected to the second rough grinding assembly (308), wherein the feed cover (306) is located inside the top cylinder (301), the first rough grinding assembly (307) is located outside the feed cover (306), the second rough grinding assembly (308) is disposed above the aggregate assembly (309), and the aggregate assembly (309) is snap-fitted inside the top cylinder (301).

2. The cement stabilized macadam recycling device according to claim 1, characterized in that, The top end of the support base (101) is fixedly connected to the bottom end of the bottom cylinder (102), the outer wall of the bottom cylinder (102) is fixedly connected to the drive assembly (104), and the bottom cylinder (102) is in communication with the discharge valve (103); The drive assembly (104) includes a mounting frame (1041), a motor (1042) is fixedly connected inside the mounting frame (1041), and an output shaft of the motor (1042) is fixedly connected to a gear (1043); The gear (1043) meshes with the first toothed ring (202), and the mounting frame (1041) is fixedly connected to the outer wall of the bottom cylinder (102).

3. The cement stabilized macadam recycling device according to claim 2, characterized in that, The outer wall of the movable cylinder (201) is fixedly connected to the inner wall of the first toothed ring (202), the inner wall of the movable cylinder (201) is snap-fitted with two driven assemblies (203), and both of the two driven assemblies (203) are located inside the first grinding assembly (204), and the inner wall of the movable cylinder (201) is fixedly connected to the windshield assembly (205); The movable cylinder (201) is sleeved above the top cylinder (301).

4. The cement stabilized macadam recycling device according to claim 3, characterized in that, The outer part of the top cylinder (301) is fixedly connected to several positioning frames (302). A driver (303) is fixedly connected to the outside of the top cylinder (301). The driver (303) passes through the top cylinder (301) and is fixedly connected to a first bevel gear (305). The outer wall of the top cylinder (301) is fixedly connected to a switch (304). The first bevel gear (305) meshes with a first rough grinding assembly (307) and a second rough grinding assembly (308) respectively. The inner wall of the top cylinder (301) is fixedly connected to a feed cover (306). The bottom end of the feed cover (306) is communicated with a first grinding assembly (204). The second rough grinding assembly (308) is fixedly connected above an aggregate assembly (309). The aggregate assembly (309) is clamped inside the top cylinder (301); The other end of the positioning frame (302) is fixedly connected to a bottom cylinder (102). The aggregate assembly (309) is communicated with a wind shield assembly (205).

5. The cement stabilized macadam recycling device according to claim 4, characterized in that The driven assembly (203) includes a first bearing (2031). A rotating shaft (2032) is sleeved inside the first bearing (2031). One end of the rotating shaft (2032) is fixedly connected to a second bevel gear (2033). A number of ventilation holes (2034) are formed on one side of the second bevel gear (2033). An exhaust fan (2035) is fixedly connected to the outside of the rotating shaft (2032); The first bearing (2031) is clamped on the inner wall of the movable cylinder (201). The second bevel gear (2033) and the exhaust fan (2035) are both located inside the wind shield assembly (205). The second bevel gear (2033) meshes with the first grinding assembly (204).

6. The cement stabilized macadam recycling device according to claim 5, characterized in that, The first grinding assembly (204) includes a grinding shell (2041). A guide ring (2042) is fixedly connected to the lower part of the inner wall of the grinding shell (2041). A filter screen (2043) is fixedly connected inside the grinding shell (2041). The top end of the filter screen (2043) is fixedly connected to a guide block (2044). The filter screen (2043) is communicated with the grinding shell (2041); The inner wall of the grinding shell (2041) meshes with two second bevel gears (2033). The lower part of the grinding shell (2041) is fixedly connected to the bottom cylinder (102). The lower part of the grinding shell (2041) is communicated with a discharge valve (103).

7. The cement stabilized macadam recycling device according to claim 6, characterized in that, The wind shield assembly (205) includes a wind shield (2051). A number of brackets (2052) are fixedly connected to the outside of the wind shield (2051). A connecting frame (2054) is fixedly connected inside the wind shield (2051). A spiral blade (2055) is fixedly connected above the connecting frame (2054). A sealing bearing (2053) is clamped above the wind shield (2051); The wind shield (2051) is fixedly connected to the movable cylinder (201) through a number of brackets (2052). The aggregate assembly (309) is located inside the sealing bearing (2053).

8. The cement stabilized macadam recycling device according to claim 7, characterized in that, The first rough grinding assembly (307) includes a first grinding block (3071). A second bearing (3072) is clamped above the first grinding block (3071). A second toothed ring (3073) is fixedly connected to the outside of the first grinding block (3071). A material inlet (3074) is formed above the first grinding block (3071). A plurality of first grinding teeth (3075) are formed below the first grinding block (3071). The first grinding block (3071) is connected to the material inlet cover (306) through the second bearing (3072). The material inlet cover (306) is communicated with the material inlet (3074). The second toothed ring (3073) meshes with the first bevel gear (305). The second rough grinding assembly (308) includes a second grinding block (3081). A third toothed ring (3083) is fixedly connected to the outside of the second grinding block (3081). A plurality of second grinding teeth (3082) are arranged above the second grinding block (3081). Both the first grinding teeth (3075) and the second grinding teeth (3082) are designed in an arc shape. The second rough grinding assembly (308) is fixedly connected above the aggregate assembly (309). The second grinding block (3081) meshes with the first bevel gear (305) through the third toothed ring (3083).

9. The cement stabilized macadam recycling device according to claim 8, characterized in that, The aggregate assembly (309) includes a positioning plate (3091). A sleeve (3092) is sleeved outside the positioning plate (3091). A plurality of through holes (3093) are formed above the positioning plate (3091). A collection cover (3094) is fixedly connected below the positioning plate (3091). A plurality of air holes (3095) are formed outside the collection cover (3094), and all the plurality of air holes (3095) are designed in an inclined shape. An air pipe (3096) is fixedly connected below the collection cover (3094), and the air pipe (3096) is communicated with the collection cover (3094). The upper part of the positioning plate (3091) is fixedly connected to the lower part of the second grinding block (3081). The sleeve (3092) is clamped inside the inner wall of the top cylinder (301). The spiral blade (2055) is located inside the air pipe (3096). The sealing bearing (2053) is clamped outside the air pipe (3096).

10. A method for reusing cement crushed stones, according to the cement stabilized crushed stone recycling device described in claim 9, characterized in that, It includes the following steps: S1. During use, the pre-treated cement gravel is added into the rough grinding mechanism (3). S2. After being processed by the rough grinding mechanism (3), the cement gravel will automatically enter the fine grinding mechanism (2) and wait for processing. After processing, the cement powder will be discharged along the base mechanism (1).

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