Production process of machine-made sand, stone powder and aggregate

Abstract

The invention provides a production process of machine-made sand, stone powder and aggregate, and belongs to the technical field of building material production. Comprising the steps that S1, raw materials are poured into a feeding pipe, and pretreatment crushing work is conducted on the raw materials through a crushing structure; and S2, the crushed raw materials enter a vertical mill shell through a feeding pipe to be ground. The grinding and screening structure is arranged, machine-made sand, stone powder and aggregate are produced at the same time through the grinding and screening structure, the utilization efficiency and production efficiency of resources are improved, high quality of products is guaranteed, and good economic and social benefits are achieved; materials entering the grinding and screening structure can be pretreated through the crushing structure, raw materials are directly crushed in the feeding pipe, the raw materials do not need to be crushed by an external crushing device and then transferred to the feeding pipe, the time for transferring the crushed raw materials is saved, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of building material production, and in particular to a production process of machine-made sand, stone powder and aggregate. Background Art

[0002] Artificial sand refers to sand processed by sand making machine and other auxiliary equipment. The finished product is more regular. Aggregate is granular material that plays a skeleton and filling role in concrete and mortar. The stone is initially crushed by the coarse crusher, and the coarse material is conveyed by the belt conveyor to the fine crusher for further crushing. The finely crushed stone is screened into two types of stone by the vibrating screen. The stone that meets the feed particle size of artificial sand is artificial sand, and the stone that meets the feed particle size of aggregate is aggregate.

[0003] The existing artificial sand production process usually involves multiple stages of crushing and screening to produce aggregates and artificial sand of different particle sizes. However, these processes often have many production line equipment, long processes, and occupy a lot of space, and the production efficiency and product quality need to be improved. Therefore, this application provides a production process for artificial sand, stone powder and aggregate to meet the needs. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a production process for machine-made sand, stone powder and aggregate to solve the problem that the existing machine-made sand production process usually involves multiple stages of crushing and screening to produce aggregates and machine-made sand of different particle sizes. However, these processes often have many production line equipment, long processes, and occupy a lot of space, and the production efficiency and product quality need to be improved.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A production process of machine-made sand, stone powder and aggregate, comprising the following steps:

[0007] S1. The raw materials are poured into the feed pipe and pre-processed and crushed by the crushing structure;

[0008] S2. The crushed raw materials enter the vertical mill housing through the feed pipe for grinding;

[0009] S3. The grinding and screening structure inside the vertical mill housing cooperates with the grinding roller structure under the drive structure to grind the crushed raw materials. At the same time, the grinding and screening structure screens the ground raw materials to produce aggregates and machine-made sand of different particle sizes.

[0010] S4, while the grinding and screening structure grinds the crushed raw materials, the wind ring blows hot air to the grinding and screening structure;

[0011] S5. The hot air blown out by the wind ring drives the stone powder produced by the grinding and screening structure into the sorting machine, and is separated by wind through the sorting machine to obtain stone powder that meets the requirements.

[0012] Optionally, the classifier is connected to the top of the vertical mill housing, the feed pipe is fixedly connected to the outer wall of the vertical mill housing, and the feed pipe is communicated with the interior of the vertical mill housing, the grinding and screening structure is connected to the bottom of the vertical mill housing, the grinding roller structure is connected to the outer sides of the vertical mill housing, the driving structure is located below the vertical mill housing, the output end of the driving structure is connected to the grinding and screening structure, and the air ring is fixedly connected to the inner wall of the vertical mill housing; the top of the classifier is fixedly connected with a stone powder discharge pipe communicated with the interior thereof, and the output end of the driving structure is fixedly connected with a driving shaft.

[0013] Optionally, the feed pipe is formed by connecting a hopper section and a sliding section, the outer wall of the sliding section is fixedly connected to the vertical mill housing, one end of the sliding section is fixedly connected to the sliding section, and the end of the sliding section close to the hopper section is connected to a crushing structure; the inner surface wall of the crushing structure is rotatably connected to a first crushing roller and a second crushing roller arranged in parallel, the first crushing roller and the second crushing roller are respectively fixedly connected to a plurality of rows of first crushing teeth and second crushing teeth distributed in a ring, the first crushing teeth and the second crushing teeth are staggered with each other, and crushing motors are respectively fixedly connected to both sides of the sliding section, and the output shafts of the two crushing motors are respectively fixedly connected to the first crushing roller and the crushing motor.

[0014] Optionally, the grinding and screening structure includes a grinding and screening shell fixedly connected to the bottom of the vertical mill housing, the top inner surface wall of the grinding and screening shell is rotatably connected to a grinding disc, the inner surface wall of the grinding and screening shell is fixedly connected to a support frame near the bottom of the grinding and screening shell, the grinding disc is fitted with the support frame, a screening disc is rotatably connected to the middle position of the inner surface wall of the grinding and screening shell, and a sorting structure is fixedly connected to the inner surface wall of the grinding and screening shell near the bottom of the screening disc.

[0015] Optionally, a rotating groove is provided at the center position of the inner bottom end of the grinding and screening shell, and a bearing is fixedly connected to the inner surface wall of the rotating groove, a machine-made sand discharge port is provided on the bottom side of the grinding and screening shell close to the bearing, and a machine-made sand discharge pipe connected to the machine-made sand discharge port is fixedly connected to the bottom of the machine-made sand discharge port, an aggregate outlet is provided on the inner surface wall of the grinding and screening shell close to the screening plate, and an aggregate discharge pipe connected to the aggregate outlet is fixedly connected to the outer surface wall of the grinding and screening shell; a rotating head is fixedly connected to the outer surface wall of the driving shaft, and a second scraper is fixedly connected to the outer surface wall of the rotating head The bottom of the second scraper is in contact with the bottom end of the grinding and screening shell; the top surface wall of the grinding and screening shell is provided with a plurality of guide installation openings corresponding to the upper air outlet of the wind ring, and a hot air guide pipe is fixedly connected to the guide installation opening; the hot air guide pipe is formed by connecting two vertical plates, a first hot air plate and a second hot air plate, and the two vertical plates are respectively fixedly connected to the two sides of the guide installation opening, the top ends of the two vertical plates are fixedly connected to the first hot air plates, and the bottom ends of the two vertical plates are fixedly connected to the second hot air plates; it also includes a first scraper for unloading aggregate from the screening plate.

[0016] Optionally, the grinding disc is composed of a first reflux section, a grinding section and a second reflux section connected in sequence, the outer wall of the first reflux section is fixedly connected to the grinding section, the outer wall of the grinding section is fixedly connected to the second reflux section, the grinding section is provided with a plurality of evenly distributed first sieve holes, one side of the first reflux section is fixedly connected to the top of the driving shaft; the first reflux section is an outwardly convex disc-shaped structure, the grinding section is an inwardly concave annular structure, and the second reflux section is an outwardly turned annular structure; the outer wall of the second reflux section is fixedly connected to a rotating slip ring, the cross-section of the rotating slip ring is a T-shaped structure, the grinding and screening shell and the rotating slip ring are provided with matching grinding grooves at corresponding positions, and the grinding and screening shell and the grinding disc are rotatably connected through the grinding groove and the rotating slip ring.

[0017] Optionally, the support frame is formed by connecting a first support section and two second support sections, both ends of the first support section are fixedly connected to the second support sections, the second support section is provided with a number of reinforcing ribs, the first support section is provided with a through hole at a position corresponding to the driving shaft, and the aperture of the through hole is slightly larger than the diameter of the driving shaft; the top shape of the first support section is adapted to the bottom shape of the first reflux section, and the top shape of the second support section is adapted to the bottom shape of the grinding section and the second reflux section; an annular support slot is provided on the inner surface wall of the grinding and screening shell, the two ends of the support frame are fixedly connected to the support slot, and the second support section corresponds to the position of the grinding roller structure.

[0018] Optionally, the screening disk is composed of a third reflux section, a screening section and a discharging section connected in sequence, the outer wall of the third reflux section is fixedly connected to the screening section, the outer wall of the screening section is fixedly connected to the discharging section, a rotating hole is provided at the center of the third reflux section, the inner wall of the rotating hole is fixedly connected to the outer wall of the driving shaft, and a number of evenly distributed second sieve holes are provided on the screening section and the discharging section; the third reflux section is an annular structure with a convex center, and the discharging section is an annular structure flipped downward; the inner wall of the grinding and screening shell is provided with an annular screening chute, and the screening disk and the grinding and screening shell are rotatably connected through the discharging section and the screening chute.

[0019] Optionally, the bottom of the first scraper rod is in contact with the top of the screening plate, and the first scraper rod is composed of a diverter section, a first guide section, a second guide section and a third guide section which are fixedly connected in sequence, one end of the third guide section is fixedly connected to a mounting rod, and one end of the mounting rod is fixedly connected to an inner surface wall of the grinding and screening shell near the aggregate outlet; the first guide section and the third guide section are both concave structures, and the diverter section and the second guide section are both convex structures.

[0020] Optionally, a sorting structure is connected to the inner wall of the grinding and screening shell near the bottom of the screening plate; the sorting structure includes a sorting shell fixedly connected to the inner wall of the grinding and screening shell, a second leakage trough is provided at the bottom of the sorting shell, a first leakage trough connected to the second leakage trough is provided at the top of the sorting shell, and sorting air troughs connected to the first leakage trough are provided on both sides of the interior of the sorting shell, a jet pipe is fixedly connected to the bottom of the sorting air trough, a plurality of evenly distributed jet heads are fixedly connected to the top of the jet pipe, an inflation hose is fixedly connected to one end of the jet pipe, and the inflation hose passes through the grinding and screening shell and is connected to an external air pump.

[0021] Compared with the prior art, the present invention has at least the following beneficial effects:

[0022] In the above scheme, by setting up a grinding and screening structure, the simultaneous production of machine-made sand, stone powder and aggregate is realized through the grinding and screening structure, which not only improves the resource utilization efficiency and production efficiency, but also ensures the high quality of the product, and has good economic and social benefits. The crushing structure can be used to pre-treat the materials entering the grinding and screening structure, and the raw materials are directly crushed inside the feed pipe. The raw materials do not need to be crushed in an external crushing device and then transferred to the feed pipe, which saves the time for transferring the crushed raw materials and increases work efficiency.

[0023] By setting the grinding disc and the screening disc, the grinding disc is used as a grinding platform, and the material is ground and screened at the same time through the support frame, so that grinding and screening can be achieved until all the materials are ground and pass through the grinding disc. At the same time, the material is screened for the second time through the screening disc, and the machine-made sand and aggregate that meet the requirements are directly discharged. The entire grinding and screening are carried out simultaneously, saving the screening time.

[0024] By setting up a hot air guide pipe, part of the hot air from the air ring outlet is introduced into the hot air guide pipe through the first hot air plate, and then through the cooperation of the first hot air plate and the second hot air plate, the hot air in the hot air guide pipe is blown toward the grinding disc in a fan shape, and the hot air drives the stone powder at the grinding part of the grinding disc to move toward the sorting machine, so that the screening efficiency of the stone powder is better.

[0025] By setting up a sorting structure, the sorting structure is used to blow and screen the materials on the surface of the screening disk, so that the materials are scattered, and the materials with a size less than 5 mm can quickly pass through the second sieve hole and fall into the bottom of the grinding and screening shell, thereby increasing the screening effect of the screening disk and avoiding the accumulation of materials and affecting the screening efficiency between materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0027] Figure 1 It is a three-dimensional structural diagram of the production equipment for machine-made sand, stone powder and aggregate;

[0028] Figure 2 This is a partially cutaway schematic diagram of the three-dimensional structure of the production equipment for machine-made sand, stone powder and aggregates;

[0029] Figure 3 Assemble a multi-view stereoscopic structural diagram for the feed pipe and crushing structure;

[0030] Figure 4 Assemble the three-dimensional structure diagram of the drive structure, air ring and grinding and screening structure;

[0031] Figure 5 A schematic diagram of the three-dimensional structure of the drive structure, air ring and grinding and screening structure;

[0032] Figure 6 It is a schematic diagram of the three-dimensional structure of the drive structure, the grinding and screening housing, the grinding disc and the support frame after partial cutaway assembly;

[0033] Figure 7 A schematic diagram of the three-dimensional structure of the air ring and the grinding and screening shell;

[0034] Figure 8A schematic diagram of the three-dimensional structure of the grinding and screening shell;

[0035] Fig. 9 Schematic diagram of the three-dimensional structure of the cutaway shell for grinding and screening;

[0036] Fig.10 for Fig. 9 Schematic diagram of the three-dimensional structure at A in the middle;

[0037] Fig.11 A schematic diagram of a three-dimensional structure cut out for a grinding and screening structure;

[0038] Fig.12 It is a schematic diagram of the three-dimensional structure of the grinding disc;

[0039] Fig.13 It is a schematic diagram of the multi-view stereoscopic structure of the support frame;

[0040] Fig.14 It is a schematic diagram of the three-dimensional structure of the screening plate, the first scraper and the air ring after being partially cut apart and assembled;

[0041] Fig.15 It is a schematic diagram of the multi-view stereoscopic structure of the sorting structure;

[0042] Fig.16 Schematic diagram of the three-dimensional structure of the sorting structure.

[0043] Reference numerals:

[0044] 2. Drive structure; 21. Drive shaft; 3. Grinding roller structure; 4. Vertical mill housing; 5. Feed pipe; 51. Hopper section; 52. Sliding section; 6. Sorting machine; 61. Stone powder discharge pipe; 7. Crushing structure; 71. First crushing roller; 72. Second crushing roller; 73. Crushing motor; 8. Air ring; 9. Grinding and screening structure; 91. Grinding and screening housing; 911. Machine-made sand discharge pipe; 912. Aggregate discharge pipe; 913. Bearing; 914. Machine-made sand discharge port; 915. Screening chute; 916. Grinding chute; 917. Support slot; 918. Guide installation port; 92. Grinding disc; 921. First reflux section; 922. Grinding section; 923. Second reflux section; 924. First sieve hole; 925. Rotating slip ring; 93. Support frame; 9 31. first support section; 932. second support section; 933. reinforcing ribs; 934. perforations; 94. screening disc; 941. third reflux section; 942. screening section; 943. discharging section; 944. second sieve hole; 945. rotating hole; 95. first scraper; 951. diversion section; 952. first guide section; 953. second guide section; 954. third guide section; 955. mounting rod; 96. sorting structure; 961. sorting shell; 962. second leakage trough; 963. first leakage trough; 964. inflating hose; 965. jet pipe; 966. jet head; 967. sorting gas trough; 97. second scraper; 971. rotating head; 98. hot air guide pipe; 981. first hot air plate; 982. vertical plate; 983. second hot air plate.

[0045] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0046] The following is a detailed description of a production process of machine-made sand, stone powder and aggregate provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0047] It should be noted that the references to "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0048] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0049] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0050] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0051] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a production process of machine-made sand, stone powder and aggregate, comprising the following steps:

[0052] S1, the raw materials are poured into the feed pipe 5, and the raw materials are pre-processed and crushed by the crushing structure 7;

[0053] S2, the crushed raw materials enter the vertical mill housing 4 through the feed pipe 5 for grinding;

[0054] S3, the grinding and screening structure 9 inside the vertical mill housing 4 cooperates with the grinding roller structure 3 under the drive of the driving structure 2 to grind the crushed raw materials, and the grinding and screening structure 9 screens the ground raw materials, thereby producing aggregates and machine-made sand of different particle sizes;

[0055] S4, while the grinding and screening structure 9 grinds the crushed raw materials, the air ring 8 blows hot air to the grinding and screening structure 9;

[0056] S5. The hot air blown out by the air ring 8 drives the stone powder produced by the grinding and screening structure 9 to enter the separator 6, and is separated by air separation in the separator 6, so as to obtain stone powder that meets the requirements.

[0057] like Figure 1 , Figure 2 and Figure 7 As shown, the classifier 6 is connected to the top of the vertical mill housing 4, and the classifier 6 is used to collect the stone powder produced by grinding. The feed pipe 5 is fixedly connected to the outer wall of the vertical mill housing 4, and the feed pipe 5 is connected to the inside of the vertical mill housing 4. The grinding and screening structure 9 is connected to the bottom of the vertical mill housing 4, and the grinding roller structure 3 cooperates with the grinding and screening structure 9 to grind the material entering through the feed pipe 5. At the same time, the ground raw materials are screened inside the grinding and screening structure 9, and the grinding roller structure 3 is connected to both sides of the outside of the vertical mill housing 4. The driving structure 2 is located below the vertical mill housing 4, and the output end of the driving structure 2 is connected to the grinding and screening structure 9. The air ring 8 is fixedly connected to the inner wall of the vertical mill housing 4; the top of the classifier 6 is fixedly connected with a stone powder discharge pipe 61 connected to the inside thereof, and the output end of the driving structure 2 is fixedly connected with a driving shaft 21, wherein the classifier 6, the driving structure 2, the grinding roller structure 3 and the air ring 8 are all prior arts.

[0058] like Figure 1 and Figure 3As shown, the feed pipe 5 is formed by connecting a hopper section 51 and a sliding section 52. The outer wall of the sliding section 52 is fixedly connected to the vertical mill housing 4. One end of the sliding section 52 is fixedly connected to the sliding section 52. The end of the sliding section 52 close to the hopper section 51 is connected to a crushing structure 7. The crushing structure 7 can be used to pre-treat the material entering the grinding and screening structure 9. The raw materials are directly crushed inside the feed pipe 5. The raw materials do not need to be crushed by an external crushing device and then transferred to the feed pipe 5, which saves time for transferring the crushed raw materials and increases work efficiency. The inner wall of the crushing structure 7 is rotatably connected to the first crushing roller 71 and the first crushing roller 72 arranged in parallel. The second crushing roller 72, the first crushing roller 71 and the second crushing roller 72 are respectively fixedly connected with a plurality of rows of first crushing teeth and second crushing teeth distributed in a ring shape, the first crushing teeth and the second crushing teeth are staggered with each other, and crushing motors 73 are respectively fixedly connected on both sides of the sliding section 52, and the output shafts of the two crushing motors 73 are respectively fixedly connected to the first crushing roller 71 and the crushing motor 73, and the two crushing motors 73 respectively drive the first crushing roller 71 and the second crushing roller 72 to rotate in opposite directions, so that the raw materials are crushed by the staggered first crushing teeth and the second crushing teeth, and after being crushed, the raw materials slide along the sliding section 52 to the grinding and screening structure 9.

[0059] like Figure 1 and Figures 4 to 7 As shown, the grinding and screening structure 9 includes a grinding and screening shell 91 fixedly connected to the bottom of the vertical mill housing 4, and a grinding disc 92 is rotatably connected to the top inner surface wall of the grinding and screening shell 91. The grinding disc 92 is a grinding platform. The crushed raw materials slide from the sliding section 52 to the surface of the grinding disc 92, and then cooperate with the grinding roller on the grinding roller structure 3 to grind the crushed raw materials. At the same time, the grinding disc 92 screens the materials with a size less than 31.5 mm while grinding the raw materials. A support frame 93 is fixedly connected to the inner surface wall of the grinding and screening shell 91 near the bottom of the grinding and screening shell 91, and the grinding disc 92 fits the support frame 93. The support frame 9 3 is used to support the relative position of the grinding disc 92 and the grinding roller on the grinding roller structure 3, so that when the grinding disc 92 and the grinding roller grind the material, sufficient extrusion force is provided, and at the same time, the grinding roller is prevented from squeezing the raw materials when grinding the material, causing the grinding disc 92 to be deformed and damaged. A screening disc 94 is rotatably connected to the middle position of the inner surface wall of the grinding and screening shell 91. The screening disc 94 is used to perform secondary screening on materials with a size less than 31.5 mm, so as to separate aggregates and machine-made sand. A sorting structure 96 is fixedly connected to the inner surface wall of the grinding and screening shell 91 near the bottom of the screening disc 94. The sorting structure 96 is used to assist the screening disc 94 in performing secondary screening on the material.

[0060] like Figures 5 to 9As shown, a rotating groove is provided at the center of the inner bottom end of the grinding and screening shell 91, and a bearing 913 is fixedly connected to the inner surface wall of the rotating groove. The inner ring of the bearing 913 is fixedly connected to the outer surface wall of the driving shaft 21. A machine-made sand discharge port 914 is provided on the bottom of the grinding and screening shell 91 near the bearing 913. A machine-made sand discharge pipe 911 connected to the machine-made sand discharge port 914 is fixedly connected to the bottom of the machine-made sand discharge port 914. The machine-made sand that meets the size requirements is screened to the bottom of the grinding and screening shell 91 through the screening plate 94, and then passes through the screening plate 94. The machine-made sand is rolled to the machine-made sand discharge port 914 by the second scraper 97, and then discharged from the machine-made sand discharge pipe 911. An aggregate outlet is provided on the inner surface wall of the grinding and screening shell 91 near the screening plate 94. An aggregate discharge pipe 912 connected to the aggregate outlet is fixedly connected to the outer surface wall of the grinding and screening shell 91. After being screened by the screening plate 94, the material retained on the screening plate 94 is aggregate. The aggregate flows to the aggregate outlet under the interception of the first scraper 95, and then is discharged from the aggregate discharge pipe 912. The outer surface wall of the driving shaft 21 is fixedly connected to the rotating head 971. The outer wall of the rotor 971 is fixedly connected with a second scraper 97, and the bottom of the second scraper 97 fits with the bottom end of the grinding and screening shell 91. When the driving shaft 21 rotates, it will drive the rotor 971 to rotate, thereby driving the second scraper 97 to rotate. The rotating second scraper 97 will drive the material at the bottom of the grinding and screening shell 91 to rotate, so that the material falls into it when passing through the machine-made sand discharge port 914; the top surface wall of the grinding and screening shell 91 is provided with a plurality of guide installation ports 918 corresponding to the upper air ports of the air ring 8, and the guide installation ports 918 are fixed A hot air guide pipe 98 is connected, and a plurality of air vents are provided on the air ring 8, so that the external hot air can enter the top of the grinding and screening structure 9 through the air vents. The hot air guide pipe 98 installed on the guide installation port 918 can guide a part of the hot air in the air vent to the bottom of the grinding disc 92. During the grinding process of the grinding disc 92, the hot air discharged by the hot air guide pipe 98 will drive the generated stone powder to enter the sorting machine 6. Through the mutual cooperation of the hot air guide pipe 98 and the air ring 8, the hot air can drive the stone powder to move in a larger range, so that the screening efficiency of the stone powder is better.

[0061] like Figures 8 to 10As shown, the hot air guide duct 98 is formed by connecting two vertical plates 982, a first hot air plate 981 and a second hot air plate 983. The two vertical plates 982 are fixedly connected to the two sides of the guide mounting port 918 respectively. The top ends of the two vertical plates 982 are fixedly connected with the first hot air plate 981, and the bottom ends of the two vertical plates 982 are fixedly connected with the second hot air plate 983. One end of the first hot air plate 981 extends into the air outlet and bends inward, and the other end extends to the bottom of the grinding disc 92 in an outward shape. One end of the second hot air plate 983 is flush with the guide mounting port 918, and the other end extends to the bottom of the grinding disc 92 in an arc shape. Part of the hot air from the air outlet of the wind ring 8 is introduced into the hot air guide duct 98 through the first hot air plate 981, and then through the cooperation of the first hot air plate 981 and the second hot air plate 983, the hot air in the hot air guide duct 98 is blown toward the grinding disc 92 in a fan shape.

[0062] like Figure 6 , Fig.11 and Fig.12 As shown, the grinding disc 92 is formed by connecting a first reflux section 921, a grinding section 922 and a second reflux section 923 in sequence. The outer wall of the first reflux section 921 is fixedly connected to the grinding section 922, and the outer wall of the grinding section 922 is fixedly connected to the second reflux section 923. The grinding section 922 is provided with a plurality of evenly distributed first sieve holes 924. The aperture of the first sieve hole 924 is 31.5 mm. Materials with a size larger than 31.5 mm continue to be ground on the surface of the grinding disc 92, and materials with a size smaller than 31.5 mm pass through the first sieve hole 924 and enter the surface of the screening disc 94, waiting for secondary screening. One side of the first reflux section 921 is fixedly connected to the top of the driving shaft 21; the first reflux section 921 is a convex disc-shaped structure, and the grinding section 922 is fixedly connected to the outer wall of the second reflux section 923. 922 is an inwardly concave annular structure, and the second reflux section 923 is an outwardly turned annular structure, so the material falling into the surface of the first reflux section 921 and the second reflux section 923 will slide along their surface to the grinding section 922; the outer wall of the second reflux section 923 is fixedly connected with a rotating slip ring 925, and the cross section of the rotating slip ring 925 is a T-shaped structure. The grinding and screening shell 91 and the rotating slip ring 925 are provided with a grinding chute 916 adapted thereto at the corresponding position. The grinding and screening shell 91 and the grinding disc 92 are rotatably connected through the grinding chute 916 and the rotating slip ring 925. When the driving shaft 21 rotates, the grinding disc 92 is driven to rotate on the grinding chute 916. When rotating, the grinding disc 92 drives the material on its surface to grind with the grinding roller structure 3.

[0063] like Figure 5 , Figure 6 , Fig.11 and Fig.13As shown, the support frame 93 is formed by connecting a first support section 931 and two second support sections 932, both ends of the first support section 931 are fixedly connected with the second support section 932, and the second support section 932 is provided with a plurality of reinforcing ribs 933, and the reinforcing ribs 933 are used to strengthen the strength of the second support section 932, and the first support section 931 is provided with a through hole 934 at a position corresponding to the driving shaft 21, and the aperture of the through hole 934 is slightly larger than the diameter of the driving shaft 21, so that the driving shaft 21 will not touch the support frame 93 during the rotation process; the top shape of the first support section 931 is adapted to the bottom shape of the first reflux section 921, and the top shape of the second support section 932 is adapted to the bottom shape of the grinding section 922 and the second reflux section 923; the inner surface wall of the grinding and screening shell 91 is provided with an annular support groove 917, and the two ends of the support frame 93 are fixedly connected in the support groove 917, and the second support section 932 corresponds to the position of the grinding roller structure 3.

[0064] like Figure 5 and Fig.14As shown, the screening plate 94 is formed by connecting the third reflux section 941, the screening section 942 and the discharging section 943 in sequence. The outer wall of the third reflux section 941 is fixedly connected with the screening section 942, and the outer wall of the screening section 942 is fixedly connected with the discharging section 943. A rotating hole 945 is provided at the center of the third reflux section 941. The inner wall of the rotating hole 945 is fixedly connected with the outer wall of the driving shaft 21. The driving shaft 21 drives the screening plate 94 to rotate on the screening chute 915 during rotation. A plurality of evenly distributed second sieve holes 944 are provided on the screening section 942 and the discharging section 943. The aperture of the second sieve hole 944 is 5 mm. Materials with a size less than 5 mm will pass through the second sieve hole 944 and fall into the grinding and screening shell 91. At the bottom, materials with a size greater than 5 mm will continue to stay on the surface of the screening plate 94. As the screening plate 94 rotates, the materials are intercepted by the first scraper 95 and flow to the aggregate discharge pipe 912; the third reflux section 941 is a ring-shaped structure with a central convexity, and the discharge section 943 is a ring-shaped structure that is flipped downward. The materials that fall into the third reflux section 941 slide along the surface of the third reflux section 941 into the screening section 942 under the centrifugal force generated by the rotation of the screening plate 94. The surface of the screening section 942 is horizontally set, so that the materials can stay in the screening section 942 for a longer time, and then the materials on the screening section 942 are sorted by the sorting structure 96, and the sorted materials enter the aggregate outlet through the discharge section 943; the grinding and screening outer The inner surface wall of the shell 91 is provided with an annular screening chute 915, and the screening plate 94 and the grinding and screening shell 91 are rotatably connected with the screening chute 915 through the discharge section 943, and also include a first scraper 95 for unloading the aggregate on the screening plate 94, the bottom of the first scraper 95 is in contact with the top of the screening plate 94, the first scraper 95 is composed of a diversion section 951, a first guide section 952, a second guide section 953 and a third guide section 954 which are fixedly connected in sequence, one end of the third guide section 954 is fixedly connected with a mounting rod 955, and one end of the mounting rod 955 is fixedly connected to the inner surface wall of the grinding and screening shell 91 near the aggregate outlet; the first guide section 952 and the third guide section 954 are both concave structures, and the first guide section 953 of the concave structure is The flow section 952 and the third guide section 954 can prolong the time that the material stays on its surface, and help increase the screening effect of the screening disc 94 on the material. The diverter section 951 and the second guide section 953 are both convex structures. The diverter section 951 with a convex structure can quickly separate the material at the connection position of the third reflux section 941 and the screening section 942. The first scraper 95 is fixedly installed on one side of the aggregate outlet. When the driving shaft 21 drives the screening disc 94 to rotate, the screening disc 94 generates centrifugal force when it rotates, which will drive the material on its surface to gradually move outward. When the material moves to the side of the first scraper 95, it will be intercepted by the first scraper 95, and the material will move outward along the surface of the first scraper 95 until it moves into the aggregate outlet.

[0065] like Figure 5 , Fig.11 , Fig.15 and Fig.16 As shown, the inner surface wall of the grinding and screening shell 91 near the bottom of the screening plate 94 is connected with a sorting structure 96, and the sorting structure 96 is used to blow and screen the materials on the surface of the screening plate 94 so that the materials are scattered to avoid the accumulation of materials and the influence of the screening between the materials; the sorting structure 96 includes a sorting shell 961 fixedly connected to the inner surface wall of the grinding and screening shell 91, and the bottom of the sorting shell 961 is provided with a second leakage groove 962, and the top of the sorting shell 961 is provided with a first leakage groove 963 connected to the second leakage groove 962, and the inner sides of the sorting shell 961 are provided with sorting air grooves 967 connected to the first leakage groove 963, and the bottom of the sorting air groove 967 is provided with a second leakage groove 962. The top of the jet pipe 965 is fixedly connected to a jet pipe 965, and a plurality of evenly distributed jet heads 966 are fixedly connected to the top of the jet pipe 965. One end of the jet pipe 965 is fixedly connected to an inflation hose 964. The inflation hose 964 passes through the grinding and screening shell 91 and is connected to an external air pump. The inside of the jet pipe 965 is pressurized and inflated by the external air pump, and then the jet is ejected through the jet head 966. The ejected air flow passes through the sorting air slot 967 and is blown out from the first leakage slot 963. The blown gas will disperse the material on the surface of the screening plate 94 above it, so that the material with a size less than 5 mm can quickly pass through the second sieve hole 944 and fall into the bottom of the grinding and screening shell 91, thereby increasing the screening effect of the screening plate 94.

[0066] The working principle of the technical solution provided by the present invention is as follows: the raw materials are poured into the feed pipe 5, and the two crushing motors 73 respectively drive the first crushing roller 71 and the second crushing roller 72 to rotate in opposite directions, so that the raw materials are crushed by the first crushing teeth and the second crushing teeth that are staggered with each other. After the raw materials are crushed, they slide along the sliding section 52 to the grinding and screening structure 9.

[0067] The crushed raw materials slide from the sliding section 52 to the surface of the grinding disc 92, and the driving structure 2 is started. The driving shaft 21 connected to the output end of the driving structure 2 drives the grinding disc 92 and the screening disc 94 to rotate on the grinding and screening shell 91. The rotating grinding disc 92 cooperates with the grinding roller structure 3 to grind the crushed raw materials. During the grinding process, the support frame 93 supports the relative position of the grinding disc 92 and the grinding roller on the grinding roller structure 3. During the grinding process, materials with a size greater than 31.5 mm continue to be ground on the surface of the grinding disc 92, and materials with a size less than 31.5 mm enter the surface of the screening disc 94 through the first sieve hole 924, waiting for secondary screening.

[0068] While the screening disc 94 is rotating, an external air pump pressurizes and inflates the inside of the jet pipe 965, and then sprays air through the jet head 966. The ejected airflow passes through the sorting air slot 967 and is blown out from the first leakage slot 963. The blown gas will disperse the material on the surface of the screening disc 94 above it, so that materials with a size less than 5 mm can quickly pass through the second sieve hole 944 and fall into the bottom of the grinding and screening shell 91, thereby screening out materials of different sizes.

[0069] The material with a size between 5-31.5 mm is aggregate. When the driving shaft 21 drives the screening disc 94 to rotate, the centrifugal force generated when the screening disc 94 rotates will drive the material on its surface to gradually move outward. When the material moves to the side of the first scraper 95, it will be intercepted by the first scraper 95. The material will move outward along the surface of the first scraper 95 until it moves into the aggregate outlet and is discharged from the aggregate discharge pipe 912. The material with a size less than 5 mm is machine-made sand. The machine-made sand passes through the second sieve hole 944 and falls into the bottom of the grinding and screening shell 91. When the driving shaft 21 rotates, it will drive the rotor 971 to rotate, thereby driving the second scraper 97 to rotate. The rotating second scraper 97 will drive the material at the bottom of the grinding and screening shell 91 to rotate, so that the material falls into the machine-made sand discharge port 914 when passing through it, and then is discharged from the machine-made sand discharge pipe 911.

[0070] The dust generated during the grinding process is stone powder. A number of air vents are provided on the air ring 8, so that external hot air can enter the top of the grinding and screening structure 9 through the air vents. A part of the hot air in the air vent can be diverted to the bottom of the grinding disc 92 through the hot air guide pipe 98 installed on the guide installation port 918. During the grinding process of the grinding disc 92, the hot air discharged by the hot air guide pipe 98 will drive the generated stone powder into the sorting machine 6, and then be discharged from the stone powder discharge pipe 61.

[0071] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0072] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A production process for machine-made sand, stone powder and aggregate, characterized in that: The following steps are involved: S1. The raw materials are poured into the feed pipe and pre-processed and crushed by the crushing structure; S2. The crushed raw materials enter the vertical mill housing through the feed pipe for grinding; S3. The grinding and screening structure inside the vertical mill housing cooperates with the grinding roller structure under the drive structure to grind the crushed raw materials. At the same time, the grinding and screening structure screens the ground raw materials to produce aggregates and machine-made sand of different particle sizes. S4, while the grinding and screening structure grinds the crushed raw materials, the wind ring blows hot air to the grinding and screening structure; S5. The hot air blown out by the wind ring drives the stone powder produced by the grinding and screening structure into the sorting machine, and is separated by wind through the sorting machine to obtain stone powder that meets the requirements.

2. The production process of machine-made sand, stone powder and aggregate according to claim 1, characterized in that: The classifier is connected to the top of the vertical mill housing, the feed pipe is fixedly connected to the outer wall of the vertical mill housing, and the feed pipe is communicated with the interior of the vertical mill housing, the grinding and screening structure is connected to the bottom of the vertical mill housing, the grinding roller structure is connected to both sides of the exterior of the vertical mill housing, the driving structure is located below the vertical mill housing, the output end of the driving structure is connected to the grinding and screening structure, and the air ring is fixedly connected to the inner wall of the vertical mill housing; The top of the separator is fixedly connected with a stone powder discharge pipe which is communicated with the interior thereof, and the output end of the driving structure is fixedly connected with a driving shaft.

3. The production process of machine-made sand, stone powder and aggregate according to claim 2, characterized in that: The feed pipe is formed by connecting a hopper section and a sliding section, the outer wall of the sliding section is fixedly connected to the vertical mill housing, one end of the sliding section is fixedly connected to the sliding section, and one end of the sliding section close to the hopper section is connected to a crushing structure; The inner surface wall of the crushing structure is rotatably connected with a first crushing roller and a second crushing roller which are arranged in parallel. The first crushing roller and the second crushing roller are respectively fixedly connected with a plurality of rows of first crushing teeth and second crushing teeth which are distributed in an annular manner. The first crushing teeth and the second crushing teeth are staggered with each other. Crushing motors are respectively fixedly connected on both sides of the sliding section. The output shafts of the two crushing motors are respectively fixedly connected to the first crushing roller and the crushing motor.

4. The production process of machine-made sand, stone powder and aggregate according to claim 2, characterized in that: The grinding and screening structure includes a grinding and screening shell fixedly connected to the bottom of the vertical mill housing, a grinding disc is rotatably connected to the top inner surface wall of the grinding and screening shell, a support frame is fixedly connected to the inner surface wall of the grinding and screening shell near the bottom of the grinding and screening shell, the grinding disc is fitted with the support frame, a screening disc is rotatably connected to the middle position of the inner surface wall of the grinding and screening shell, and a sorting structure is fixedly connected to the inner surface wall of the grinding and screening shell near the bottom of the screening disc.

5. The production process of machine-made sand, stone powder and aggregate according to claim 4, characterized in that: A rotating groove is provided at the center of the inner bottom end of the grinding and screening shell, a bearing is fixedly connected to the inner surface wall of the rotating groove, a machine-made sand discharge port is provided at the bottom of the grinding and screening shell near the bearing, a machine-made sand discharge pipe connected to the machine-made sand discharge port is fixedly connected to the bottom of the machine-made sand discharge port, an aggregate outlet is provided on the inner surface wall of the grinding and screening shell near the screening plate, and an aggregate discharge pipe connected to the aggregate outlet is fixedly connected to the outer surface wall of the grinding and screening shell; The outer wall of the driving shaft is fixedly connected with a rotating head, the outer wall of the rotating head is fixedly connected with a second scraper rod, and the bottom of the second scraper rod is in contact with the bottom end of the inner part of the grinding and screening shell; The top surface wall of the grinding and screening shell is provided with a plurality of guide installation openings corresponding to the upper air outlets of the air ring, and the guide installation openings are fixedly connected with hot air guide pipes; The hot air guide pipe is formed by connecting two vertical plates, a first hot air plate and a second hot air plate, the two vertical plates are fixedly connected to the two sides of the guide installation port, the top ends of the two vertical plates are fixedly connected to the first hot air plate, and the bottom ends of the two vertical plates are fixedly connected to the second hot air plate; It also includes a first scraper for unloading aggregate on the screening plate.

6. The production process of machine-made sand, stone powder and aggregate according to claim 5, characterized in that: The grinding disc is formed by sequentially connecting a first reflux section, a grinding section and a second reflux section, the outer wall of the first reflux section is fixedly connected to the grinding section, the outer wall of the grinding section is fixedly connected to the second reflux section, a plurality of evenly distributed first sieve holes are opened on the grinding section, and one side of the first reflux section is fixedly connected to the top end of the driving shaft; The first reflux section is an outwardly convex disc-shaped structure, the grinding section is an inwardly concave annular structure, and the second reflux section is an outwardly everted annular structure; The outer wall of the second reflux section is fixedly connected with a rotating slip ring, the cross section of the rotating slip ring is a T-shaped structure, and the grinding and screening shell and the rotating slip ring are provided with grinding grooves adapted thereto at corresponding positions, and the grinding and screening shell and the grinding disc are rotatably connected through the grinding groove and the rotating slip ring.

7. The process for producing machine-made sand, stone powder and aggregate according to claim 6, characterized in that: The support frame is formed by connecting a first support section and two second support sections, the two ends of the first support section are fixedly connected to the second support section, the second support section is provided with a plurality of reinforcing ribs, and the first support section is provided with a through hole at a position corresponding to the driving shaft, and the aperture of the through hole is slightly larger than the diameter of the driving shaft; The top shape of the first supporting section is adapted to the bottom shape of the first reflux section, and the top shape of the second supporting section is adapted to the bottom shapes of the grinding section and the second reflux section; An annular support slot is provided on the inner surface wall of the grinding and screening shell, two ends of the support frame are fixedly connected in the support slot, and the second support section corresponds to the grinding roller structure position.

8. The process for producing machine-made sand, stone powder and aggregate according to claim 5, characterized in that: The screening plate is formed by sequentially connecting a third reflux section, a screening section and a discharging section, the outer wall of the third reflux section is fixedly connected with the screening section, the outer wall of the screening section is fixedly connected with the discharging section, a rotating hole is provided at the center of the third reflux section, the inner wall of the rotating hole is fixedly connected with the outer wall of the driving shaft, and a plurality of evenly distributed second sieve holes are provided on the screening section and the discharging section; The third reflux section is an annular structure with a convex center, and the discharge section is an annular structure that is turned downward; An annular screening chute is provided on the inner surface wall of the grinding and screening shell, and the screening disc and the grinding and screening shell are rotatably connected in cooperation with the screening chute via a material discharge section.

9. The process for producing machine-made sand, stone powder and aggregate according to claim 8, characterized in that: The bottom of the first scraper rod fits with the top of the screening plate, the first scraper rod is formed by a diversion section, a first guide section, a second guide section and a third guide section fixedly connected in sequence, one end of the third guide section is fixedly connected to a mounting rod, and one end of the mounting rod is fixedly connected to the inner surface wall of the grinding and screening shell near the aggregate outlet; The first guide section and the third guide section are both concave structures, and the diverter section and the second guide section are both convex structures.

10. The process for producing machine-made sand, stone powder and aggregate according to claim 8, characterized in that: The inner surface wall of the grinding and screening housing close to the bottom of the screening plate is connected with a sorting structure; The sorting structure includes a sorting shell fixedly connected to the inner surface wall of the grinding and screening shell, a second leakage trough is provided at the bottom of the sorting shell, a first leakage trough connected to the second leakage trough is provided at the top of the sorting shell, sorting air troughs connected to the first leakage trough are provided on both sides of the interior of the sorting shell, an injection pipe is fixedly connected to the bottom of the sorting air trough, a plurality of evenly distributed injection heads are fixedly connected to the top of the injection pipe, an inflation hose is fixedly connected to one end of the injection pipe, and the inflation hose passes through the grinding and screening shell and is connected to an external air pump.

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