Production process of mechanism sand, stone powder and aggregate

Abstract

The application provides a production process of machine-made sand, stone powder and aggregate, and belongs to the technical field of building material production. The process comprises the following steps: S1, raw materials are poured into a feeding pipe, and a crushing structure is used for pretreatment crushing of the raw materials; and S2, the crushed raw materials are fed into a vertical mill shell for grinding. The grinding and screening structure is arranged, and the grinding and screening structure is used for simultaneous production of machine-made sand, stone powder and aggregate. The process not only improves the resource utilization efficiency and production efficiency, but also guarantees the high quality of the products, has good economic and social benefits, and the material entering the grinding and screening structure can be pretreated through the crushing structure. The raw materials are directly crushed in the feeding pipe, and the crushed raw materials are transferred to the feeding pipe without the need of crushing in an external crushing device, so that the time for transferring the crushed raw materials is saved, and the work efficiency is improved.

Description

TECHNICAL FIELD

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

[0002] Machine-made sand refers to sand processed by a sand making machine and other auxiliary equipment, and the finished product is more regular. Aggregate is a granular material that plays a role in the framework and filling of concrete and mortar. Stone is preliminarily crushed by a coarse crusher, and the coarse material produced is conveyed to a fine crusher by a belt conveyor for further crushing. The crushed stone is screened into two kinds of stones by a vibrating screen. The stone that meets the particle size of machine-made sand is machine-made sand, and the stone that meets the particle size of aggregate is aggregate.

[0003] In the existing machine-made sand production process, multiple stages of crushing and screening are usually involved to produce aggregate and machine-made sand of different particle sizes. However, these processes often have multiple production line devices, long processes, and large land occupation, and the production efficiency and product quality need to be improved. Therefore, the present application provides a production process of machine-made sand, stone powder and aggregate to meet the needs. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a production process of machine-made sand, stone powder and aggregate to solve the problem that in the existing machine-made sand production process, multiple stages of crushing and screening are usually involved to produce aggregate and machine-made sand of different particle sizes. However, these processes often have multiple production line devices, long processes, and large land occupation, and the production efficiency and product quality need to be improved.

[0005] To solve the above technical problems, the present application 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 feeding pipe, and the raw materials are pretreated and crushed by the crushing structure;

[0008] S2, the crushed raw materials enter the vertical mill shell through the feeding pipe for grinding work;

[0009] S3, the grinding and screening structure inside the vertical mill shell is driven by the driving structure and cooperates with the grinding roller structure to grind the crushed raw materials, and at the same time, the grinding and screening structure screens the ground raw materials to produce aggregate and machine-made sand of different particle sizes;

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

[0011] S5, the hot air blown by the air ring drives the stone powder generated in the grinding and screening structure into the sorting machine, and the stone powder is separated by air separation in the sorting machine, so as to obtain the stone powder meeting the requirements.

[0012] Optionally, the sorting machine is connected to the top end of the vertical mill shell, the feeding pipe is fixedly connected with the outer wall of the vertical mill shell and communicates with the inside of the vertical mill shell, the grinding and screening structure is connected with the bottom of the vertical mill shell, the grinding roller structure is connected with the two sides of the outside of the vertical mill shell, the driving structure is located below the vertical mill shell, the output end of the driving structure is connected with the grinding and screening structure, and the air ring is fixedly connected with the inner wall of the vertical mill shell; the top of the sorting machine is fixedly connected with a stone powder discharge pipe which communicates with the inside of the sorting machine, and the output end of the driving structure is fixedly connected with a driving shaft.

[0013] Optionally, the feeding pipe is connected by a hopper section and a sliding section, the outer wall of the sliding section is fixedly connected to the vertical mill shell, 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 with a crushing structure; the inner wall of the crushing structure is rotatably connected with 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 with a plurality of rows of first crushing teeth and second crushing teeth arranged in a ring shape, the first crushing teeth and the second crushing teeth are staggered with each other, the two sides of the sliding section are respectively fixedly connected with crushing motors, and the output shafts of the two crushing motors are respectively fixedly connected with the first crushing roller and the crushing motor.

[0014] Optionally, the grinding and screening structure comprises a grinding and screening shell fixedly connected to the bottom of the vertical mill shell, the top inner wall of the grinding and screening shell is rotatably connected with a grinding disc, the inner wall of the grinding and screening shell close to the lower part of the grinding and screening shell is fixedly connected with a support frame, the grinding disc is attached to the support frame, and the inner wall of the grinding and screening shell is rotatably connected with a screening disc at the middle position of the inner wall of the grinding and screening shell.

[0015] Optionally, a rotating groove is arranged at the inner bottom center of the grinding and screening shell, an inner wall of the rotating groove is fixedly connected with a bearing, a machine-made sand outlet is arranged at the bottom of the grinding and screening shell near the side of the bearing, a bottom of the machine-made sand outlet is fixedly connected with a machine-made sand discharge pipe communicated with the machine-made sand outlet, an inner wall of the grinding and screening shell near the screening disc is provided with a aggregate outlet, an outer wall of the grinding and screening shell is fixedly connected with an aggregate discharge pipe communicated with the aggregate outlet; an outer wall of the driving shaft is fixedly connected with a rotating head, an outer wall of the rotating head is fixedly connected with a second scraping rod, a bottom of the second scraping rod is attached to the inner bottom of the grinding and screening shell; a plurality of air guide installation openings corresponding to the air ring upper air inlets are arranged at the top wall of the grinding and screening shell, and hot air guide pipes are fixedly connected to the air guide installation openings; the hot air guide pipe is connected by two vertical plates, a first hot air plate and a second hot air plate, two vertical plates are fixedly connected to the two sides of the air guide installation opening, the top of the two vertical plates is fixedly connected with the first hot air plate, and the bottom of the two vertical plates is fixedly connected with the second hot air plate; and the first scraping rod for discharging the aggregate on the screening disc is further arranged.

[0016] Optionally, the grinding disc is sequentially connected by a first backflow section, a grinding section and a second backflow section, an outer wall of the first backflow section is fixedly connected with the grinding section, an outer wall of the grinding section is fixedly connected with the second backflow section, a plurality of first screen holes are arranged on the grinding section, and one side of the first backflow section is fixedly connected with the top of the driving shaft; the first backflow section is a convex disc structure, the grinding section is a concave annular structure, and the second backflow section is an outwardly turned annular structure; an outer wall of the second backflow section is fixedly connected with a rotating slip ring, a cross section of the rotating slip ring is a T-shaped structure, the grinding and screening shell is provided with a grinding sliding groove corresponding to the rotating slip ring, and the grinding and screening shell and the grinding disc are rotationally connected through the grinding sliding groove and the rotating slip ring.

[0017] Optionally, the support frame is connected by a first support section and two second support sections, the two ends of the first support section are fixedly connected with the second support sections, a plurality of reinforcing ribs are arranged on the second support sections, a through hole is arranged on the first support section corresponding to the driving shaft, and the diameter of the through hole is slightly larger than the diameter of the driving shaft; the top of the first support section is adapted to the shape of the bottom of the first backflow section, and the top of the second support section is adapted to the shape of the bottom of the grinding section and the second backflow section; an annular support clamping groove is arranged on the inner wall of the grinding and screening shell, the two ends of the support frame are fixedly connected in the support clamping groove, and the second support section corresponds to the position of the grinding roller structure.

[0018] Optionally, the screening disc is sequentially connected by a third reflux section, a screening section and a discharge 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 discharge section, a rotating hole is arranged at the center position of the third reflux section, the inner wall of the rotating hole is fixedly connected with the outer wall of the driving rotating shaft, a plurality of second screen holes are arranged on the screening section and the discharge section; the third reflux section is a ring structure with a convex center, the discharge section is a ring structure with a downward overturning, the inner wall of the grinding and screening shell is provided with a ring-shaped screening chute, the screening disc is rotatably connected with the grinding and screening shell through the discharge section and the screening chute.

[0019] Optionally, the bottom of the first scraping rod is attached to the top of the screening disc, the first scraping rod is sequentially fixedly connected by a shunt section, a first flow guide section, a second flow guide section and a third flow guide section, one end of the third flow guide section is fixedly connected with a mounting rod, one end of the mounting rod is fixedly connected with the inner wall of the grinding and screening shell near the aggregate outlet; the first flow guide section and the third flow guide section are both concave structures, and the shunt section and the second flow guide section are both convex structures.

[0020] Optionally, the inner wall of the grinding and screening shell near the bottom of the screening disc is connected with a sorting structure; the sorting structure comprises a sorting shell fixedly connected to the inner wall of the grinding and screening shell, a second material leakage groove is arranged at the bottom of the sorting shell, a first material leakage groove is arranged at the top of the sorting shell and communicates with the second material leakage groove, sorting air grooves are arranged at both sides of the interior of the sorting shell and communicate with the first material leakage groove, a gas jet pipe is fixedly connected to the bottom of the sorting air groove, a plurality of evenly distributed gas jet heads are fixedly connected to the top of the gas jet pipe, one end of the gas jet pipe is fixedly connected with an air charging hose, and the air charging hose penetrates through the grinding and screening shell and is connected with an external air pump.

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

[0022] In the above scheme, by setting the grinding and screening structure, the simultaneous production of machine-made sand, stone powder and aggregate is realized, which not only improves the utilization efficiency and production efficiency of resources, but also guarantees the high quality of the product, has good economic and social benefits, and the material entering the grinding and screening structure can be pretreated through the crushing structure, the raw material is directly crushed in the inside of the feeding pipe, and the raw material does not need to be crushed in the external crushing device and then transferred to the feeding pipe, thereby saving the time of transferring the crushed raw material and increasing the work efficiency.

[0023] By setting the grinding disc and the screening disc, the grinding disc serves as a grinding platform, and the material is ground and screened at the same time through the support frame, realizing grinding and screening at the same time, until all the materials are ground through the grinding disc, and at the same time, the materials are secondarily screened through the screening disc, and the machine-made sand and aggregates meeting the requirements are directly discharged, and the grinding and screening are carried out at the same time, saving the screening time.

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

[0025] By setting the sorting structure, the material on the surface of the screening disc is blown and screened through the sorting structure, so that the materials are scattered, and the materials with a size less than 5mm can quickly pass through the second screen hole and fall into the bottom of the grinding and screening shell, increasing the screening effect of the screening disc, avoiding the mutual accumulation of materials, and affecting the screening efficiency between the materials. BRIEF DESCRIPTION OF DRAWINGS

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

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

[0028] Figure 2 It is a partially cut three-dimensional structure schematic diagram of a machine-made sand, stone powder and aggregate production equipment;

[0029] Figure 3 It is a multi-angle three-dimensional structure schematic diagram of an inlet pipe and a crushing structure assembly;

[0030] Figure 4 It is a three-dimensional structure schematic diagram of a driving structure, air ring and grinding and screening structure assembly;

[0031] Figure 5 It is a partially cut three-dimensional structure schematic diagram of a driving structure, air ring and grinding and screening structure;

[0032] Figure 6 It is a partially cut three-dimensional structure schematic diagram of a driving structure, grinding and screening shell, grinding disc and support frame assembly;

[0033] Figure 7 It is a partially cut three-dimensional structure schematic diagram of an air ring and grinding and screening shell;

[0034] Figure 8Schematic view of a perspective of a grinding and screening housing;

[0035] Figure 9 Schematic view of a perspective of a grinding and screening housing cutaway;

[0036] Figure 10 Schematic view of a perspective of a grinding and screening structure; Figure 9 Schematic view of a perspective of a grinding and screening structure;

[0037] Figure 11 Schematic view of a perspective of a grinding and screening structure cutaway;

[0038] Figure 12 Schematic view of a perspective of a grinding disc;

[0039] Figure 13 Schematic view of a perspective of a support frame;

[0040] Figure 14 Schematic view of a perspective of a grinding and screening disc, first scraper and air ring assembly cutaway;

[0041] Figure 15 Schematic view of a perspective of a sorting structure;

[0042] Figure 16 Schematic view of a perspective of a sorting structure cutaway.

[0043] Reference signs:

[0044] 2, drive structure; 21, drive shaft; 3, grinding roller structure; 4, vertical mill shell; 5, feed pipe; 51, hopper section; 52, sliding material 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 shell; 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 clamping groove; 918, flow guide mounting port; 92, grinding disc; 921, first backflow section; 922, grinding section; 923, second backflow section; 924, first screen hole; 925, rotating slip ring; 93, support frame; 931, first support section; 932, second support section; 933, reinforcing rib; 934, perforation; 94, screening disc; 941, third backflow section; 942, screening section; 943, discharge section; 944, second screen hole; 945, rotating hole; 95, first scraper; 951, shunt section; 952, first flow guide section; 953, second flow guide section; 954, third flow guide section; 955, mounting rod; 96, sorting structure; 961, sorting shell; 962, second material leakage groove; 963, first material leakage groove; 964, inflatable hose; 965, air jet pipe; 966, air jet head; 967, sorting air groove; 97, second scraper; 971, rotating head; 98, hot air flow guide pipe; 981, first hot air plate; 982, vertical plate; 983, second hot air plate.

[0045] As shown in the drawings, in order to clearly realize the structure of the embodiments of the present application, specific structures and devices are marked in the drawings, but this is only for the need of illustration, and is not intended to limit the present application to the specific structures, devices and environments, and those skilled in the art can adjust or modify these devices and environments according to specific needs. DETAILED DESCRIPTION

[0046] The production process of machine-made sand, stone powder and aggregate provided by the present application is described in detail below in combination with the drawings and specific embodiments. It should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and other alternative ways can also be used by those skilled in the art to implement some known technologies; and the drawings are only used to more specifically describe the embodiments, and are not intended to specifically limit the present application.

[0047] It is to be noted that the terms "one embodiment," "an embodiment," "some embodiments," "one specific embodiment," or "some specific embodiments" as may be used herein are generally intended to indicate that the described embodiment(s) can include a particular feature, structure, or characteristic, but every embodiment can not necessarily include the particular feature, structure, or characteristic. Furthermore, the describing use of these terms should not necessarily be construed to mean that every described embodiment includes every feature, structure, or characteristic described in connection with other embodiments.

[0048] Generally, the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0049] It will be understood that the terms "on," "over," and "above," as used herein, should be interpreted in the broadest context possible 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 "over" or "above" not only means "over" or "above" something but also can include the meaning of being "over" or "above" something with no intervening features or layers therebetween.

[0050] In addition, spatially relative terms, such as "under," "below," "lower," "over," "upper," and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. The spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. The devices can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0051] As shown in FIGS. 1 and 2, the embodiment of the present application provides a mechanism sand, stone powder and aggregate production process, comprising the following steps: Figure 1 Figure 2 As shown in FIGS. 1 and 2, the embodiment of the present application provides a mechanism sand, stone powder and aggregate production process, comprising the following steps:

[0052] S1, the raw materials are poured into the feeding pipe 5, and the raw materials are pretreated and crushed by the crushing structure 7;

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

[0054] ​S3, the grinding and screening structure 9 inside the vertical mill shell 4 is driven by the driving structure 2 and cooperates with the grinding roller structure 3 to grind the crushed raw materials, and the grinding and screening structure 9 screens the ground raw materials to produce aggregate and machine-made sand with 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 by the air ring 8 drives the stone powder generated during the grinding of the grinding and screening structure 9 into the sorting machine 6, which is separated by air separation, thereby obtaining stone powder meeting the requirements.

[0057] As shown in Figure 1 , Figure 2 and Figure 7 , the sorting machine 6 is connected to the top end of the vertical mill shell 4, and the sorting machine 6 is used to collect the stone powder generated during grinding. The feed pipe 5 is fixedly connected to the outer wall of the vertical mill shell 4 and is in communication with the inside of the vertical mill shell 4. The grinding and screening structure 9 is connected to the bottom of the vertical mill shell 4. The grinding roller structure 3 cooperates with the grinding and screening structure 9 to grind the materials entering the feed pipe 5, and the ground raw materials are screened inside the grinding and screening structure 9. The grinding roller structure 3 is connected to the outside of the vertical mill shell 4 on both sides. The driving structure 2 is located below the vertical mill shell 4. 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 shell 4. The top of the sorting machine 6 is fixedly connected with a stone powder discharge pipe 61 which is in communication with the inside of the sorting machine 6. The output end of the driving structure 2 is fixedly connected with a driving shaft 21. The sorting machine 6, the driving structure 2, the grinding roller structure 3 and the air ring 8 are all prior art.

[0058] As shown in Figure 1 and Figure 3As shown, the feed pipe 5 is connected by the hopper section 51 and the sliding section 52, the outer wall of the sliding section 52 is fixedly connected to the vertical mill shell 4, one end of the sliding section 52 is fixedly connected to the sliding section 52, and the end of the sliding section 52 close to the hopper section 51 is connected with the crushing structure 7, the material entering the grinding and screening structure 9 can be pretreated through the crushing structure 7, the raw material is directly crushed in the feed pipe 5, and the raw material does not need to be crushed by an external crushing device and then transferred to the feed pipe 5, thereby saving the time for transferring the crushed raw material and increasing the work efficiency; the inner wall of the crushing structure 7 is rotatably connected with the first crushing roller 71 and the second crushing roller 72 arranged in parallel, the first crushing roller 71 and the second crushing roller 72 are respectively fixedly connected with a plurality of rows of annularly distributed first crushing teeth and second crushing teeth, the first crushing teeth and the second crushing teeth are interlaced with each other, the two sides of the sliding section 52 are respectively fixedly connected with the crushing motors 73, the output shafts of the two crushing motors 73 are respectively fixedly connected with the first crushing roller 71 and the second crushing roller 72, and the two crushing motors 73 respectively drive the first crushing roller 71 and the second crushing roller 72 to rotate oppositely, so that the raw material is crushed through the interlaced first crushing teeth and second crushing teeth, and the crushed raw material falls along the sliding section 52 to the grinding and screening structure 9.

[0059] As shown in Figure 1 and Figures 4 to 7 shown, the grinding and screening structure 9 includes a grinding and screening shell 91 fixedly connected to the bottom of the vertical mill shell 4, the top inner wall of the grinding and screening shell 91 is rotatably connected with a grinding disc 92, the grinding disc 92 is a grinding platform, the crushed raw material falls from the sliding section 52 to the surface of the grinding disc 92 and is ground with the grinding roller on the grinding roller structure 3, and at the same time, the grinding disc 92 screens the material with a size less than 31.5 mm while grinding the material, the inner wall of the grinding and screening shell 91 close to the lower part of the grinding and screening shell 91 is fixedly connected with a support frame 93, the grinding disc 92 is attached to the support frame 93, the support frame 93 is used to support the relative position of the grinding disc 92 and the grinding roller on the grinding roller structure 3, so that the grinding disc 92 provides sufficient extrusion force when the grinding disc 92 and the grinding roller grind the material, and at the same time, the grinding disc 92 is prevented from being deformed and damaged due to the extrusion of the grinding roller on the raw material, the middle position of the inner wall of the grinding and screening shell 91 is rotatably connected with a screening disc 94, the screening disc 94 is used for secondary screening of the material with a size less than 31.5 mm, so as to separate the aggregate and the machine-made sand, and the inner wall of the grinding and screening shell 91 close to the lower part of the screening disc 94 is fixedly connected with a sorting structure 96, the sorting structure 96 is used to assist the screening disc 94 in secondary screening of the material.

[0060] As shown in Figures 5 to 9As shown, the inside bottom end center of the grinding and screening shell 91 is provided with a rotating groove, the inner wall of the rotating groove is fixedly connected with a bearing 913, the inner ring of the bearing 913 is fixedly connected with the outer wall of the driving shaft 21, the bottom of the grinding and screening shell 91 is provided with a machine-made sand discharge port 914 on the side close to the bearing 913, the bottom of the machine-made sand discharge port 914 is fixedly connected with a machine-made sand discharge pipe 911 in communication with the machine-made sand discharge port 914, the machine-made sand that meets the size requirement is screened to the bottom of the grinding and screening shell 91 through the screening disc 94, and then the machine-made sand is rolled to the machine-made sand discharge port 914 through the second scraper rod 97, and then is discharged from the machine-made sand discharge pipe 911, the inner wall of the grinding and screening shell 91 close to the screening disc 94 is provided with a aggregate outlet, the outer wall of the grinding and screening shell 91 is fixedly connected with a aggregate discharge pipe 912 in communication with the aggregate outlet, after screening through the screening disc 94, the material retained on the screening disc 94 is aggregate, the aggregate flows to the aggregate outlet under the interception of the first scraper rod 95, and then is discharged from the aggregate discharge pipe 912; the outer wall of the driving shaft 21 is fixedly connected with a rotating head 971, the outer wall of the rotating head 971 is fixedly connected with the second scraper rod 97, the bottom of the second scraper rod 97 is in close contact with the inside bottom end of the grinding and screening shell 91, when the driving shaft 21 rotates, the rotating head 971 is driven to rotate, thereby driving the second scraper rod 97 to rotate, the rotating second scraper rod 97 drives 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 the machine-made sand discharge port 914; the top 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, the guide installation ports 918 are fixedly connected with hot air guide pipes 98, the air ring 8 is provided with a plurality of air ports, so that the external hot air can enter above the grinding and screening structure 9 through the air ports, through the hot air guide pipes 98 installed on the guide installation ports 918, a part of the hot air in the air ports can be guided to below the grinding disc 92, in the process of grinding of the grinding disc 92, the hot air guided by the hot air guide pipes 98 drives the generated stone powder into the sorting machine 6, through the cooperation of the hot air guide pipes 98 and the air ring 8, the hot air drives a larger range of stone powder to move, so that the screening efficiency of the stone powder is better.

[0061] As Figures 8 to 10As shown, the hot air guide pipe 98 is connected by 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 on both sides of the guide installation opening 918, the top ends of the two vertical plates 982 are fixedly connected with the first hot air plate 981, 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 port and bends inward, the other end extends to the lower side of the grinding disc 92 in an outward manner, one end of the second hot air plate 983 is flush with the guide installation opening 918, and the other end extends to the lower side of the grinding disc 92 in an arc shape, part of the hot air in the air port of the air ring 8 is guided into the hot air guide pipe 98 through the first hot air plate 981, and the hot air in the hot air guide pipe 98 is blown to the grinding disc 92 in a fan shape through the cooperation of the first hot air plate 981 and the second hot air plate 983.

[0062] As shown in Figure 6 , Figure 11 and Figure 12 , the grinding disc 92 is connected in sequence by a first return flow section 921, a grinding section 922 and a second return flow section 923, the outer surface wall of the first return flow section 921 is fixedly connected with the grinding section 922, the outer surface wall of the grinding section 922 is fixedly connected with the second return flow section 923, a plurality of uniformly distributed first sieve holes 924 are formed on the grinding section 922, the aperture of the first sieve hole 924 is 31.5 mm, and the material with a size greater than 31.5 mm continues to be ground on the surface of the grinding disc 92, the material with a size less than 31.5 mm enters the surface of the screening disc 94 through the first sieve hole 924, waiting for secondary screening, one side of the first return flow section 921 is fixedly connected with the top end of the driving shaft 21; the first return flow section 921 is a convex disc structure, the grinding section 922 is an inwardly recessed annular structure, and the second return flow section 923 is an outwardly recessed annular structure, so that the material falling on the surfaces of the first return flow section 921 and the second return flow section 923 slides along the surfaces to the grinding section 922; the outer surface wall of the second return flow section 923 is fixedly connected with a rotating sliding ring 925, the cross section of the rotating sliding ring 925 is a T-shaped structure, the grinding and screening shell 91 is provided with a grinding sliding groove 916 corresponding to the rotating sliding ring 925, the grinding and screening shell 91 and the grinding disc 92 are rotatably connected through the grinding sliding groove 916 and the rotating sliding ring 925, when the driving shaft 21 rotates, the grinding disc 92 rotates on the grinding sliding groove 916, and when rotating, the grinding disc 92 drives the material on the surface thereof to perform grinding work with the grinding roller structure 3.

[0063] As shown in Figure 5 , Figure 6 , Figure 11 and Figure 13As shown, the support frame 93 is connected by 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 sections 932, the second support sections 932 are provided with a plurality of reinforcing ribs 933 for reinforcing the strength of the second support sections 932, the first support section 931 is provided with a through hole 934 at a position corresponding to the driving shaft 21, the diameter of the through hole 934 is slightly larger than the diameter of the driving shaft 21, so that the driving shaft 21 does not touch the support frame 93 in the rotating process; the top shape of the first support section 931 is adapted to the bottom shape of the first backflow 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 backflow section 923; the inner surface wall of the grinding and screening shell 91 is provided with an annular support clamping groove 917, both ends of the support frame 93 are fixedly connected in the support clamping groove 917, and the second support sections 932 correspond to the position of the grinding roller structure 3.

[0064] As Figure 5 and Figure 14As shown, the screening disc 94 is sequentially connected by the third reflux section 941, the screening section 942 and the discharge section 943, the outer surface wall of the third reflux section 941 is fixedly connected with the screening section 942, the outer surface wall of the screening section 942 is fixedly connected with the discharge section 943, the central position of the third reflux section 941 is provided with a rotating hole 945, the inner surface wall of the rotating hole 945 is fixedly connected with the outer surface wall of the driving rotating shaft 21, the driving rotating shaft 21 drives the screening disc 94 to rotate on the screening chute 915 in the process of rotation, a plurality of second screen holes 944 are arranged on the screening section 942 and the discharge section 943, the diameter of the second screen hole 944 is 5mm, the materials with the size less than 5mm can pass through the second screen hole 944 and fall into the bottom of the grinding and screening shell 91, the materials with the size greater than 5mm can continue to stay on the surface of the screening disc 94, with the rotation of the screening disc 94, the materials flow to the aggregate discharge pipe 912 under the interception of the first scraper 95; the third reflux section 941 is a center outward convex annular structure, the discharge section 943 is a downwardly overturned annular structure, the materials falling into the third reflux section 941 slide to the screening section 942 along the surface of the third reflux section 941 under the centrifugal force generated by the rotation of the screening disc 94, the surface of the screening section 942 is horizontally arranged, so that the materials can stay on the screening section 942 for a long time, and then the materials on the screening section 942 are sorted by the sorting structure 96, and then the sorted materials enter the aggregate outlet through the discharge section 943; the inner surface wall of the grinding and screening shell 91 is provided with an annular screening chute 915, the screening disc 94 is rotatably connected with the grinding and screening shell 91 through the cooperation of the discharge section 943 and the screening chute 915, and the first scraper 95 is arranged for discharging the aggregate on the screening disc 94, the bottom of the first scraper 95 is attached to the top of the screening disc 94, the first scraper 95 is sequentially fixedly connected by the shunt section 951, the first flow guide section 952, the second flow guide section 953 and the third flow guide section 954, one end of the third flow guide section 954 is fixedly connected with the mounting rod 955, one end of the mounting rod 955 is fixedly connected with the inner surface wall of the grinding and screening shell 91 close to the aggregate outlet; the first flow guide section 952 and the third flow guide section 954 are both concave structures, the concave structures of the first flow guide section 952 and the third flow guide section 954 can prolong the time of the materials staying on the surface thereof, thereby assisting to increase the screening effect of the screening disc 94 on the materials, the shunt section 951 and the second flow guide section 953 are both convex structures, the convex structure of the shunt section 951 can quickly separate the materials at the connecting 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 rotating shaft 21 drives the screening disc 94 to rotate, the centrifugal force generated by the rotation of the screening disc 94 drives the materials on the surface thereof to gradually move outward, when the materials move to the side of the first scraper 95, the materials are intercepted by the first scraper 95, and then the materials move outward along the surface of the first scraper 95 until moving to the aggregate outlet.

[0065] As Figure 5 , Figure 11 , Figure 15 and Figure 16 shown, the grinding and screening shell 91 is connected with the sorting structure 96 near the inner wall below the screening disc 94, the sorting structure 96 is used for air blowing screening of the material on the surface of the screening disc 94, so that the materials are scattered, avoiding the mutual accumulation of the materials and affecting the screening between the materials; the sorting structure 96 includes a sorting shell 961 fixedly connected to the inner wall of the grinding and screening shell 91, a second material leakage groove 962 is formed in the bottom of the sorting shell 961, a first material leakage groove 963 is formed in the top of the sorting shell 961 and communicates with the second material leakage groove 962, sorting air grooves 967 are formed in the two sides of the interior of the sorting shell 961 and communicate with the first material leakage groove 963, a gas jet pipe 965 is fixedly connected to the bottom of the sorting air groove 967, a plurality of uniformly distributed gas jet heads 966 are fixedly connected to the top of the gas jet pipe 965, one end of the gas jet pipe 965 is fixedly connected with an air charging hose 964, the air charging hose 964 penetrates through the grinding and screening shell 91 and is connected with an external air pump, the internal of the gas jet pipe 965 is pressurized and aerated by the external air pump, and then the gas jet heads 966 are used for jetting, the jet flow is blown out from the first material leakage groove 963 through the sorting air groove 967, and the blown gas scatters the material on the surface of the screening disc 94 above, so that the material with a size less than 5mm can quickly pass through the second screen hole 944 and fall into the bottom of the grinding and screening shell 91, and the screening effect of the screening disc 94 is increased.

[0066] The working principle of the technical scheme provided by the application is as follows: the raw materials are poured into the feeding pipe 5, the two crushing motors 73 drive the first crushing roller 71 and the second crushing roller 72 to rotate oppositely, so that the raw materials are crushed by the first crushing teeth and the second crushing teeth which are staggered with each other, and the crushed raw materials 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, the driving structure 2 is started, the driving shaft 21 connected with 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, the support frame 93 supports the relative position of the grinding disc 92 and the grinding roller structure 3 during the grinding process, and the materials with a size greater than 31.5mm continue to be ground on the surface of the grinding disc 92, and the materials with a size less than 31.5mm enter the surface of the screening disc 94 through the first screen hole 924 and wait for secondary screening.

[0068] The screening disc 94 rotates, and the external air pump pressurizes the inside of the air jet pipe 965 to spray air through the air jet head 966, and the air jet passes through the sorting air groove 967 to blow out from the first material leakage groove 963, and the blown air scatters the material on the surface of the screening disc 94, so that the material with a size less than 5 mm can quickly pass through the second screen 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 of 5-31.5 mm is aggregate, and when the driving shaft 21 drives the screening disc 94 to rotate, the centrifugal force generated when the screening disc 94 rotates drives the material on the surface of the screening disc 94 to gradually move outward, and when the material moves to the side of the first scraper rod 95, the material is intercepted by the first scraper rod 95 and moves outward along the surface of the first scraper rod 95 until it moves to 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, which falls into the bottom of the grinding and screening shell 91 through the second screen hole 944, and when the driving shaft 21 rotates, the rotating head 971 is driven to rotate, thereby driving the second scraper rod 97 to rotate, and the rotating second scraper rod 97 drives 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 the machine-made sand discharge port 914, and is then discharged from the machine-made sand discharge pipe 911.

[0070] The dust generated in the grinding process is stone powder, and the air ring 8 is provided with a plurality of air inlets, so that the external hot air can enter the upper side of the grinding and screening structure 9 through the air inlets. The hot air guide pipe 98 installed on the air guide installation port 918 can guide a part of the hot air in the air inlets to the lower side of the grinding disc 92. In the process of grinding the grinding disc 92, the hot air guided by the hot air guide pipe 98 drives the generated stone powder into the sorting machine 6, and then is discharged from the stone powder discharge pipe 61.

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

[0072] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principle of the present application, a number of improvements and refinements can be made, and these improvements and refinements should be regarded as the protection scope of the present application.

Claims

1. A process for the production of manufactured sand, stone dust and aggregates, characterized in that, The method comprises the following steps: S1, the raw materials are poured into the feeding pipe, and the raw materials are pretreated and crushed by the crushing structure; S2, the crushed raw materials enter the vertical mill shell through the feeding pipe for grinding; S3, the grinding and screening structure in the vertical mill shell is driven by the driving structure and cooperates with the grinding roller structure to grind the crushed raw materials, and simultaneously screens the ground raw materials to produce aggregate and machine-made sand with different particle sizes; S4, while the grinding and screening structure grinds the crushed raw materials, the air ring blows hot air to the grinding and screening structure; S5, the stone powder generated during the grinding of the grinding and screening structure is driven into the sorting machine by the hot air blown by the air ring, and is separated by air separation to obtain the required stone powder; The sorting machine is connected to the top end of the vertical mill shell, the feeding pipe is fixedly connected to the outer wall of the vertical mill shell and communicates with the inside of the vertical mill shell, the grinding and screening structure is connected to the bottom of the vertical mill shell, the grinding roller structure is connected to the outer sides of the vertical mill shell, the driving structure is located below the vertical mill shell, 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 shell; The top of the sorting machine is fixedly connected with a stone powder discharge pipe which communicates with the inside of the sorting machine, and the output end of the driving structure is fixedly connected with a driving shaft; The grinding and screening structure comprises a grinding and screening shell fixedly connected to the bottom of the vertical mill shell, a grinding disc rotatably connected to the top inner wall of the grinding and screening shell, a support frame fixedly connected to the inner wall of the grinding and screening shell near the lower side of the grinding and screening shell, a screening disc rotatably connected to the inner wall of the grinding and screening shell at the middle position, and a sorting structure fixedly connected to the inner wall of the grinding and screening shell near the lower side of the screening disc; A rotating groove is formed in the inner bottom center of the grinding and screening shell, a bearing is fixedly connected to the inner wall of the rotating groove, a machine-made sand discharge port is formed in the bottom of the grinding and screening shell near one side of the bearing, a machine-made sand discharge pipe which communicates with the machine-made sand discharge port is fixedly connected to the bottom of the machine-made sand discharge port, a aggregate outlet is formed in the inner wall of the grinding and screening shell near the screening disc, and a aggregate discharge pipe which communicates with the aggregate outlet is fixedly connected to the outer wall of the grinding and screening shell; A rotating head is fixedly connected to the outer wall of the driving shaft, a second scraper rod is fixedly connected to the outer wall of the rotating head, and the bottom of the second scraper rod is attached to the inner bottom end of the grinding and screening shell; A plurality of air guide installation openings corresponding to the air inlets of the air ring are formed in the top wall of the grinding and screening shell, and air guide pipes are fixedly connected to the air guide installation openings. The hot air guide pipe is connected by 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 opening, the top end of the two vertical plates is fixedly connected with the first hot air plate, and the bottom end of the two vertical plates is fixedly connected with the second hot air plate. It also includes a first scraper for discharging the aggregate on the screening disc.

2. The process for producing manufactured sand, stone powder and aggregate according to claim 1, characterized in that, The feeding pipe is connected by a hopper section and a sliding section, the outer wall of the sliding section is fixedly connected to the vertical mill shell, one end of the sliding section is fixedly connected to the hopper section, and the end of the sliding section close to the hopper section is connected with a crushing structure. The inner wall of the crushing structure is rotatably connected with the first crushing roller and the second crushing roller arranged in parallel, the first crushing roller and the second crushing roller are fixedly connected with a plurality of rows of first crushing teeth and second crushing teeth arranged in a ring shape, the first crushing teeth and the second crushing teeth are staggered with each other, and the two sides of the sliding section are fixedly connected with crushing motors, and the output shafts of the two crushing motors are fixedly connected with the first crushing roller and the crushing motor respectively.

3. The process for producing manufactured sand, stone powder and aggregate according to claim 2, characterized in that, The grinding disc is connected by a first return section, a grinding section and a second return section in sequence, the outer wall of the first return section is fixedly connected with the grinding section, the outer wall of the grinding section is fixedly connected with the second return section, a plurality of first screen holes are arranged on the grinding section, and the side of the first return section is fixedly connected with the top end of the driving shaft. The first return section is a convex disc structure, the grinding section is a concave ring structure, and the second return section is a ring structure with an outward turning shape. The outer wall of the second return section is fixedly connected with a rotating slip ring, the cross section of the rotating slip ring is a T-shaped structure, the grinding and screening shell is provided with a grinding sliding groove corresponding to the rotating slip ring, and the grinding and screening shell and the grinding disc are rotatably connected through the grinding sliding groove and the rotating slip ring.

4. The process for producing manufactured sand, stone powder and aggregate according to claim 3, characterized in that, The support frame is connected by a first support section and two second support sections, the two ends of the first support section are fixedly connected with the second support sections, a plurality of reinforcing ribs are arranged on the second support sections, a through hole is arranged on the first support section corresponding to the driving shaft, and the diameter of the through hole is slightly larger than the diameter of the driving shaft. The top shape of the first support section is matched with the bottom shape of the first return section, and the top shape of the second support section is matched with the bottom shape of the grinding section and the second return section. The inner wall of the grinding and screening shell is provided with an annular support clamping groove, the two ends of the support frame are fixedly connected in the support clamping groove, and the second support sections correspond to the grinding roller structure.

5. The process for producing manufactured sand, stone powder and aggregate according to claim 4, characterized in that, The screening disc is sequentially connected by a third reflux section, a screening section and a discharge 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 discharge section, a rotating hole is arranged at the center position of the third reflux section, the inner wall of the rotating hole is fixedly connected with the outer wall of the driving rotating shaft, a plurality of second screen holes are arranged on the screening section and the discharge section. The third reflux section is a center outward convex annular structure, and the discharge section is a downwardly overturned annular structure. An annular screening chute is arranged on the inner wall of the grinding and screening shell, and the screening disc is rotationally connected with the grinding and screening shell through the discharge section and the screening chute.

6. The production process of manufactured sand, stone powder and aggregate according to claim 5, characterized in that, The bottom of the first scraper rod is attached to the top of the screening disc, the first scraper rod is sequentially fixedly connected by a shunt section, a first flow guide section, a second flow guide section and a third flow guide section, one end of the third flow guide section is fixedly connected with a mounting rod, and one end of the mounting rod is fixedly connected with the inner wall of the grinding and screening shell near the aggregate outlet. The first flow guide section and the third flow guide section are both concave structures, and the shunt section and the second flow guide section are both convex structures.

7. The production process of manufactured sand, stone powder and aggregate according to claim 6, characterized in that, The inner wall of the grinding and screening shell near the lower side of the screening disc is connected with a sorting structure. The sorting structure comprises a sorting shell fixedly connected with the inner wall of the grinding and screening shell, a second material leakage groove is arranged at the bottom of the sorting shell, a first material leakage groove is arranged at the top of the sorting shell and communicates with the second material leakage groove, sorting air grooves are arranged at both sides of the interior of the sorting shell and communicate with the first material leakage groove, a gas jet pipe is fixedly connected with the bottom of the sorting air groove, a plurality of gas jet heads are fixedly connected with the top of the gas jet pipe, one end of the gas jet pipe is fixedly connected with an air charging hose, and the air charging hose penetrates the grinding and screening shell and is connected with an external air pump.

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