A kind of automatic crushing equipment and crushing method of concrete machine-made sand aggregate

Abstract

The present invention belongs to the technical field of machine-made sand aggregate manufacturing, and in particular, is an automatic crushing device and method for machine-made concrete sand aggregate, comprising support legs, and top plates are fixedly mounted on the tops of the four support legs, and a feed trough is provided at the top center of the top plate. The invention provides a rough crushing mechanism in the crushing of machine-made sand aggregate: the raw materials are subjected to preliminary crushing treatment, and large aggregates are crushed into a particle size suitable for subsequent treatment, thereby improving production efficiency and product quality; a vertical reciprocating fine grinding mechanism is provided: the coarsely crushed aggregate is further ground to achieve the required fineness and particle shape, thereby improving the physical and chemical properties of the product; a rotating centrifugal fine grinding mechanism is provided simultaneously: the aggregate is ground by rotating centrifugal force, thereby increasing the grinding effect and grinding speed, and improving the fineness and uniformity of the product.

Description

Technical Field

[0001] The invention relates to the technical field of machine-made sand aggregate manufacturing, and in particular to an automatic crushing device and a crushing method for machine-made sand aggregate for concrete. Background Art

[0002] Traditional concrete materials are made from natural sand, gravel and other raw materials, but these raw materials have disadvantages such as unstable quality, containing harmful substances, and high mining and transportation costs. Natural sand resources are limited, and long-term large-scale mining will damage the ecology and affect the environment. Machine-made sand can replace part of natural sand, solving resource and environmental problems and reducing the cost of concrete.

[0003] Mechanism-based sand, also known as artificial sand, is a rock particle powder with a nominal diameter of less than 5 mm that is made by rock mining, mechanical crushing and screening. Sand is the main material for concrete. With the development of the construction industry, the amount of sand used is increasing, and the quality requirements are getting higher and higher, but the natural sand resources are becoming less and less. The use of mechanism-based sand can reduce the resources of natural sand, which is both environmentally friendly and economical.

[0004] However, the current machine-made sand production is only carried out by crushing and screening by a crushing mechanism to produce machine-made sand. The machine-made sand formed in this way has too much dust and metal powder content, and the separate crushing method in the crushing process leads to the inability to perform hierarchical screening during the machine-made sand molding process, which easily leads to the separated materials not only containing stone powder, but also containing 0.15mm, 0.3mm, 0.6mm or even larger particles, which seriously destroys the natural grading of the machine-made sand and is not conducive to achieving the maximum density of the aggregate. In addition, the separate crushing method leads to low crushing efficiency and cannot achieve fine grinding to remove internal dust and metal powder, resulting in quality degradation. Therefore, an automatic crushing equipment and crushing method for concrete machine-made sand aggregate are needed. Summary of the invention

[0005] Based on the existing technical problems, the present invention proposes an automatic crushing device and a crushing method for concrete machine-made sand aggregate.

[0006] The present invention proposes an automatic crushing device for concrete machine-made sand aggregate, comprising supporting legs, top plates fixedly installed on the tops of four supporting legs, a feed trough opened in the top center of the top plate, a feed cover fixedly installed on the inner wall of the feed trough, the feed cover is in the shape of a funnel, a coarse crushing mechanism is arranged at the bottom of the top plate, and the coarse crushing mechanism realizes the action of preliminary and rapid crushing of aggregate.

[0007] The bottom of the coarse crushing mechanism is respectively provided with a vertical reciprocating fine grinding mechanism, a rotary centrifugal fine grinding mechanism, a screening and separation mechanism, a metal removal mechanism, a dust removal mechanism and a power driving mechanism.

[0008] The vertical reciprocating fine grinding mechanism realizes the action of reciprocating fine grinding in the vertical direction on the aggregates that have been quickly crushed by the rough crushing mechanism.

[0009] The rotary centrifugal fine grinding mechanism realizes the action of fine grinding the aggregate after the rapid crushing by the rough crushing mechanism by means of horizontal rotary centrifugal motion.

[0010] The screening and separation mechanism realizes the action of screening and isolating the fine aggregate ground by the vertical reciprocating fine grinding mechanism and the rotating centrifugal fine grinding mechanism.

[0011] The metal removing mechanism realizes the action of removing metal from the fine aggregate ground by the vertical reciprocating fine grinding mechanism and the rotary centrifugal fine grinding mechanism.

[0012] The dust removal mechanism realizes the action of removing dust from the fine aggregate ground by the vertical reciprocating fine grinding mechanism and the rotary centrifugal fine grinding mechanism.

[0013] The power drive mechanism realizes the action of driving the vertical reciprocating fine grinding mechanism and the rotary centrifugal fine grinding mechanism to operate.

[0014] Preferably, the coarse crushing mechanism includes a crushing drive motor, a driving base plate is fixedly installed on one side surface of the two supporting legs, a top side of the driving base plate is fixedly installed on the mounting surface of the crushing drive motor, a crushing box is fixedly installed on the top side surfaces of the four supporting legs, and the crushing box is rotatably connected to a crushing shaft on both sides of the opposite surfaces through bearings, a crushing gear is fixedly installed on one end of the two crushing shafts, and the gear teeth and tooth grooves of the two crushing gears are meshed, and the other end of one of the crushing shafts is fixedly installed on the output shaft of the crushing drive motor through a coupling.

[0015] Preferably, both of the crushing shafts are slidably connected with crushing rollers and spacers through hexagonal surfaces, the multiple crushing rollers and the multiple spacers are linearly arranged, and the opposing surfaces of every two crushing rollers squeeze one spacer, and the opposing surfaces of two spacers squeeze one crushing roller, and the multiple crushing rollers and the multiple spacers installed on the surfaces of the two crushing shafts are arranged and distributed in mutual meshing.

[0016] Preferably, auxiliary plates are fixedly mounted on the other two sides of the crushing box relative to the inner walls, auxiliary blocks are linearly arranged on the surface of the auxiliary plates, relative surfaces of a plurality of the auxiliary blocks are slidably plugged with the surfaces of a plurality of the crushing rollers respectively, and a guide plate is fixedly mounted on the bottom of the crushing box, and the inner bottom wall of the guide plate is inclined.

[0017] Preferably, the rotary centrifugal fine grinding mechanism includes a grinding box, the top of the grinding box is fixedly mounted on the bottom of the guide plate, the top feed port of the grinding box corresponds to the discharge port of the guide plate, a discharge groove is provided on one side surface of the grinding box, the inner wall of the discharge groove is threadedly connected to a sealing plate by a screw, the sealing plate is sealed to the discharge groove by a sealing gasket, a grinding shaft is slidably inserted into the center of the inner bottom wall of the grinding box through a sealing ring, the bottom end of the grinding shaft passes through and extends to the bottom of the grinding box, and a driving gear is also fixedly mounted on the bottom end.

[0018] Preferably, the vertical reciprocating fine grinding mechanism includes a reciprocating drive ring, a connecting rod is installed in the bottom annular array of the grinding box, the connecting rod is L-shaped, the relative surfaces of the three connecting rods are fixedly installed on the arc surface of the reciprocating drive ring, a reciprocating drive groove is opened on the top of the reciprocating drive ring, a connecting rod is fixedly installed on the bottom arc surface of the grinding shaft, a convex rod is fixedly installed on one end of the connecting rod, the bottom end of the convex rod is hemispherical, the inner wall of the reciprocating drive groove is slidably plugged into the bottom end of the convex rod, the inner wall of the reciprocating drive ring is rotatably connected to a limiting sleeve through a bearing, and the inner wall of the limiting sleeve and the arc surface of the grinding shaft are plugged through a key bar.

[0019] Preferably, the power drive mechanism includes a power drive motor, the mounting surface of the power drive motor is fixedly mounted to the bottom of the reciprocating drive ring, the output shaft of the power drive motor is fixedly mounted with a motor shaft via a coupling, a driving gear is fixedly mounted on the bottom of the motor shaft, and the gear teeth of the driving gear are meshed with the tooth grooves of the driving gear.

[0020] Preferably, the screening isolation mechanism includes a screening barrel, the bottom of which is fixedly mounted on the top of the grinding shaft, the inner bottom wall of the screening barrel is respectively fixedly mounted with a first isolation ring and a second isolation ring, the first isolation ring, the second isolation ring and the inner wall of the screening barrel are all provided with filter holes, the filter holes on the surface of the first isolation ring, the second isolation ring and the screening barrel are arranged from large to small, the inner wall of the first isolation ring is provided with grinding balls, the inner bottom surface of the first isolation ring, the inner bottom surface of the second isolation ring and the inner bottom surface of the screening barrel are all provided with a discharge trough, and the inner wall of the discharge trough is clamped with a sealing plate.

[0021] Preferably, the metal removal mechanism comprises a metal ring, the top of the metal ring is fixedly mounted to the bottom of the guide plate, and the metal ring is located between the outer surface of the screening barrel and the inner wall of the grinding box, and an electromagnetic coil is installed inside the metal ring;

[0022] The dust removal mechanism includes a water tank, which is installed between the two supporting legs. A filter partition is provided inside the water tank, a water pump is provided at the bottom end of the filter partition, and the water pump is installed on the inner bottom wall of the water tank. A water outlet pipe and a water inlet pipe are fixedly installed on the top and bottom of one side of the water tank respectively, one end of the water outlet pipe is fixedly installed to the water outlet end of the water pump, the top end of the water outlet pipe is fixedly connected to the inner wall of the top end of the grinding box, the water outlet end of the water inlet pipe is fixedly connected to the inner wall of one side of the top end of the water tank, the feed end of the water outlet pipe is fixedly connected to the inner wall of the bottom end of the grinding box, and a valve is also provided on the surface of the feed end of the water outlet pipe.

[0023] The present invention proposes a crushing method for an automatic crushing device for machine-made sand aggregate for concrete. Step 1: During the production of machine-made sand aggregate, aggregate is controlled to be input from the top of a feed cover, and a crushing drive motor is turned on to drive the crushing shaft to rotate. The rotation of one crushing shaft drives a crushing gear at one end to rotate, and drives another crushing gear to rotate through meshing, thereby causing the other crushing shaft to rotate synchronously. The two crushing shafts move toward each other during the synchronous rotation, driving crushing rollers installed on the surface of the crushing shaft to mesh, plug and rotate, thereby performing a preliminary rapid crushing operation when large aggregate enters the crushing box and contacts the crushing roller, so that the crushed aggregate flows into the grinding box through a guide plate.

[0024] Step 2, turn on the power drive motor to drive the motor shaft to rotate and thus drive the active gear to rotate. The active gear rotates to control the driving gear to rotate, and then the grinding shaft rotates. During the rotation of the grinding shaft, the connecting rod on the surface is driven to swing, thereby controlling the bottom end of the protruding rod to slide on the top of the reciprocating drive ring, and always moving downward under the dead weight of the grinding shaft and the screening barrel. When the bottom of the protruding rod slides on the inner wall of the reciprocating drive groove, the grinding shaft is controlled to reciprocate in the vertical direction, and at the same time, the grinding shaft also rotates.

[0025] Step 3: When the grinding shaft performs vertical reciprocating and rotating motions simultaneously, it drives the screening barrel on the top to perform vertical reciprocating and rotating motions, and controls the grinding balls on the inner wall to grind the aggregates that enter the preliminary crushing under the coordination of vertical force and rotating centrifugal force, so that the aggregates are ground into small pieces.

[0026] Step 4: As the screening barrel rotates, the fine aggregates on the inner wall are isolated and separated layer by layer through the filter holes, and while grinding, the electromagnetic coil is energized to make the surface of the metal ring magnetic, thereby absorbing the metal elements of the aggregates and making the metal powder adsorbed on the surface of the metal ring. When the grinding is completed, the internal aggregates are dispersed layer by layer outside the first isolation ring.

[0027] Step 5. After the grinding is completed, the water pump inside the water tank is controlled to extract the water inside the water tank and enter the grinding box. Under the vertical reciprocating and rotating centrifugal motion of the screening barrel, the water on the inner wall is driven to collide and clean with the ground aggregate to clean the dust on its surface. After cleaning, the internal cleaning water is controlled to flow into the water tank again by opening the valve, and the dust is filtered through the filter partition. The filtered water flows down and waits for the next cleaning operation. At the same time, the screening barrel continues to move vertically and rotate centrifugally to dehydrate the aggregate stored inside. After dehydration, the power drive motor is stopped, and the sealing plate is opened to close the electromagnetic coil first to make the metal powder fall and clean it, and then open the sealing plate at the corresponding position to remove and collect the aggregate inside.

[0028] The beneficial effects of the present invention are:

[0029] 1. The present invention sets a coarse crushing mechanism in the crushing and production of machine-made sand aggregates: the raw materials are initially crushed, large aggregates are crushed into a particle size suitable for subsequent processing, and production efficiency and product quality are improved; a vertical reciprocating fine grinding mechanism is set: the coarsely crushed aggregates are further ground to achieve the required fineness and particle shape, and the physical and chemical properties of the products are improved; a rotary centrifugal fine grinding mechanism is simultaneously set: the aggregates are ground by rotary centrifugal force, the grinding effect and grinding speed are increased, and the fineness and uniformity of the products are improved.

[0030] 2. By setting up a screening and isolation mechanism: used to screen the ground aggregate to ensure the particle size distribution and quality stability of the product; and a metal removal mechanism: used to remove metal impurities in the aggregate to prevent metal impurities from entering the subsequent process links, protect equipment and improve product safety; and a dust removal mechanism: through water tanks, filter compartments, water pumps and other components, the generated dust and particulate matter are captured in the water to achieve dust removal and protect the environment and human health; thereby achieving multiple processes such as coarse crushing, fine grinding, screening and isolation, metal removal and dust removal of raw materials, thereby improving product quality, protecting equipment, ensuring the safety of the production environment, and improving production efficiency and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of an automatic crushing device and crushing method for concrete machine-made sand aggregate;

[0032] Figure 2 It is a three-dimensional exploded diagram of the feed chute structure of an automatic crushing device and method for crushing concrete machine-made sand aggregate;

[0033] Figure 3 A three-dimensional diagram of the guide plate structure of an automatic crushing device and method for crushing concrete machine-made sand aggregate;

[0034] Figure 4It is a three-dimensional exploded diagram of a coarse crushing mechanism of an automatic crushing device and method for crushing concrete machine-made sand aggregate;

[0035] Figure 5 A three-dimensional diagram of a coarse crushing mechanism of an automatic crushing device and method for crushing concrete machine-made sand aggregate;

[0036] Figure 6 A three-dimensional diagram of the crushing roller structure of an automatic crushing device and method for crushing concrete machine-made sand aggregate;

[0037] Figure 7 A cross-sectional view of a rotary centrifugal fine grinding mechanism of an automatic crushing device and method for crushing concrete machine-made sand aggregate;

[0038] Figure 8 A three-dimensional diagram of the discharge chute structure of an automatic crushing device and method for crushing concrete machine-made sand aggregate;

[0039] Fig. 9 A three-dimensional diagram of a screening and isolation mechanism of an automatic crushing device and method for crushing concrete machine-made sand aggregate;

[0040] Fig.10 It is a top-down stereoscopic diagram of a screening and isolation mechanism of an automatic crushing device and method for crushing concrete machine-made sand aggregate;

[0041] Fig.11 A three-dimensional diagram of a rotary centrifugal fine grinding mechanism of an automatic crushing device and method for crushing concrete machine-made sand aggregate;

[0042] Fig.12 The present invention is a three-dimensional diagram of a dust removal mechanism of an automatic crushing device and a crushing method for concrete machine-made sand aggregate.

[0043] In the figure: 1, support leg; 2, top plate; 3, feed trough; 4, feed cover; 5, coarse crushing mechanism; 51, crushing drive motor; 52, drive bottom plate; 53, crushing box; 54, crushing shaft; 55, crushing gear; 56, crushing roller; 57, spacer; 58, auxiliary plate; 59, auxiliary block; 510, guide plate; 6, vertical reciprocating fine grinding mechanism; 61, reciprocating drive ring; 62, connecting rod; 63, reciprocating drive groove; 64, connecting rod; 65, convex rod; 66, limit sleeve; 7, rotary centrifugal fine grinding mechanism; 71, grinding box; 72, discharge trough; 73, sealing Plate; 74, grinding shaft; 75, driving gear; 8, screening and isolating mechanism; 81, screening barrel; 82, first isolating ring; 83, second isolating ring; 84, filter hole; 85, grinding ball; 86, discharge chute; 87, blocking plate; 9, metal removal mechanism; 91, metal ring; 92, electromagnetic coil; 10, dust removal mechanism; 101, water tank; 102, filter interlayer; 103, water pump; 104, water outlet pipe; 105, water inlet pipe; 106, valve; 11, power drive mechanism; 1101, power drive motor; 1102, motor shaft; 1103, driving gear. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0045] Reference Figure 1-Figure 12 A concrete machine-made sand aggregate automatic crushing device includes a supporting leg 1, a top plate 2 is fixedly installed on the top of each of the four supporting legs 1, a feed trough 3 is opened at the top center of the top plate 2, a feed cover 4 is fixedly installed on the inner wall of the feed trough 3, and the feed cover 4 is in a funnel shape. A coarse crushing mechanism 5 is arranged at the bottom of the top plate 2.

[0046] In order to realize the initial and rapid crushing of aggregates, the coarse crushing mechanism 5 includes a crushing drive motor 51, a driving base plate 52 is fixedly installed on one side surface of the two supporting legs 1, and the top of one side of the driving base plate 52 is fixedly installed on the mounting surface of the crushing drive motor 51, and a crushing box 53 is fixedly installed on the top side surface of the four supporting legs 1. The opposite surfaces on both sides of the crushing box 53 are rotatably connected with crushing shafts 54 through bearings, and one end of the two crushing shafts 54 is fixedly installed with crushing gears 55, and the gear teeth and tooth grooves of the two crushing gears 55 are meshed, and the other end of one of the crushing shafts 54 is fixedly installed with the output shaft of the crushing drive motor 51 through a coupling.

[0047] Specifically, the crushing drive motor 51 drives the crushing shaft to rotate, thereby driving the crushing gear 55 at one end to rotate, and driving the other crushing gear 55 to rotate under meshing, thereby achieving the effect of the two crushing shafts rotating towards each other.

[0048] The two crushing shafts 54 are slidably connected with crushing rollers 56 and spacer sleeves 57 through hexagonal surfaces. The multiple crushing rollers 56 and the multiple spacer sleeves 57 are linearly arranged and distributed, and the opposing surfaces of every two crushing rollers 56 squeeze a spacer sleeve 57, and the opposing surfaces of two spacer sleeves 57 squeeze a crushing roller 56. The multiple crushing rollers 56 and the multiple spacer sleeves 57 installed on the surfaces of the two crushing shafts 54 are arranged and distributed in mutual meshing.

[0049] Specifically, when the two crushing shafts rotate towards each other, the multiple crushing rollers 56 mounted on the surface are driven to rotate in mesh with each other, so as to perform a rapid preliminary crushing operation on the incoming aggregate. Through the mutual installation and meshing arrangement of the crushing rollers 56 and the spacer sleeves 57, various benefits such as uniform crushing, efficient crushing, stable operation and equipment protection can be achieved.

[0050] Auxiliary plates 58 are fixedly installed on the other two opposite inner walls of the crushing box 53, and auxiliary blocks 59 are linearly arranged on the surface of the auxiliary plates 58. The opposite surfaces of the plurality of auxiliary blocks 59 are slidably plugged with the surfaces of the plurality of crushing rollers 56 respectively. A guide plate 510 is fixedly installed on the bottom of the crushing box 53, and the inner bottom wall of the guide plate 510 is inclined.

[0051] Specifically implemented in this way, through the action of the auxiliary block 59, the flow direction and path of the material in the crushing box 53 can be better controlled, the jumping and overflow of the material can be reduced, the stable feeding state of the material can be maintained, and the crushing efficiency can be improved. The inclined shape of the guide plate 510 can guide the material to slide along the inclined surface, accelerate the flow of the material, reduce accumulation and blockage, and improve the processing capacity.

[0052] The bottom of the coarse crushing mechanism 5 is respectively provided with a vertical reciprocating fine grinding mechanism 6, a rotary centrifugal fine grinding mechanism 7, a screening and separation mechanism 8, a metal removal mechanism 9, a dust removal mechanism 10 and a power drive mechanism 11;

[0053] In order to realize the action of fine grinding of aggregates by horizontal rotational centrifugal motion after rapid crushing by the coarse crushing mechanism 5, the rotary centrifugal fine grinding mechanism 7 includes a grinding box 71, the top of the grinding box 71 is fixedly installed with the bottom of the guide plate 510, the top feed port of the grinding box 71 corresponds to the discharge port of the guide plate 510, a discharge groove 72 is opened on one side surface of the grinding box 71, the inner wall of the discharge groove 72 is connected with a sealing plate 73 by screw threads, the sealing plate 73 is sealed with the discharge groove 72 by a sealing gasket, a grinding shaft 74 is slidably inserted in the center of the inner bottom wall of the grinding box 71 through a sealing ring, the bottom end of the grinding shaft 74 passes through and extends to the bottom of the grinding box 71, and a driving gear 75 is also fixedly installed at the bottom.

[0054] Specifically, the driving gear 75 is controlled to rotate so as to realize the centrifugal rotation operation of the grinding shaft 74, thereby achieving the effect of horizontal rotation centrifugal grinding, and the sealing plate 73 can be opened after grinding for cleaning.

[0055] In order to realize the vertical reciprocating fine grinding of the aggregate after rapid crushing by the coarse crushing mechanism 5, the vertical reciprocating fine grinding mechanism 6 includes a reciprocating drive ring 61, and a connecting rod 62 is installed in the bottom annular array of the grinding box 71. The connecting rod 62 is L-shaped, and the relative surfaces of the three connecting rods 62 are fixedly installed with the arc surface of the reciprocating drive ring 61. A reciprocating drive groove 63 is opened on the top of the reciprocating drive ring 61, and a connecting rod 64 is fixedly installed on the bottom arc surface of the grinding shaft 74. A convex rod 65 is fixedly installed at one end of the connecting rod 64, and the bottom end of the convex rod 65 is hemispherical. The inner wall of the reciprocating drive groove 63 is slidably plugged with the bottom end of the convex rod 65, and the inner wall of the reciprocating drive ring 61 is rotatably connected to the limiting sleeve 66 through a bearing, and the inner wall of the limiting sleeve 66 and the arc surface of the grinding shaft 74 are plugged through a key bar.

[0056] Specifically, when the centrifuge rotates in the horizontal direction, the grinding shaft 74 rotates to drive the connecting rod 64 mounted on the surface to rotate and swing, thereby controlling the hemispherical surface of the bottom end of the convex rod 65 at one end to slide on the inner wall of the reciprocating drive groove 63, thereby achieving the effect of vertical reciprocating grinding under the condition of its own gravity.

[0057] In order to realize the driving operation of the vertical reciprocating fine grinding mechanism 6 and the rotary centrifugal fine grinding mechanism 7, the power drive mechanism 11 includes a power drive motor 1101, the mounting surface of the power drive motor 1101 is fixedly mounted on the bottom of the reciprocating drive ring 61, the output shaft of the power drive motor 1101 is fixedly mounted with a motor shaft 1102 through a coupling, and a driving gear 1103 is fixedly mounted on the bottom of the motor shaft 1102, and the gear teeth of the driving gear 1103 are meshed with the tooth grooves of the driving gear 75.

[0058] Specifically, the power drive motor 1101 is used as a power source to simultaneously drive the grinding shaft to rotate centrifugally and vertically reciprocate, thereby enhancing the quality of fine grinding. One power source drives multiple mechanisms to operate, and multiple work tasks can be processed simultaneously, thereby improving production efficiency and productivity. Compared with each mechanism being equipped with a separate power source, one power source drives multiple mechanisms, which can reduce energy consumption and reduce the impact on the environment. Multiple mechanisms sharing one power source can simplify maintenance and management work, and reduce downtime and production losses caused by maintenance and management.

[0059] In order to realize the screening and isolation of the fine aggregates ground by the vertical reciprocating fine grinding mechanism 6 and the rotating centrifugal fine grinding mechanism 7, the screening and isolation mechanism 8 includes a screening barrel 81, the bottom of which is fixedly installed on the top of the grinding shaft 74, and the inner bottom wall of the screening barrel 81 is respectively fixedly installed with a first isolation ring 82 and a second isolation ring 83, and the first isolation ring 82, the second isolation ring 83 and the inner wall of the screening barrel 81 are all provided with filter holes 84, and the filter holes 84 on the surface of the first isolation ring 82, the second isolation ring 83 and the screening barrel 81 are arranged from large to small in sequence, and the inner wall of the first isolation ring 82 is provided with grinding balls 85, and the inner bottom surface of the first isolation ring 82, the inner bottom surface of the second isolation ring 83 and the inner bottom surface of the screening barrel 81 are all provided with a discharge trough 86, and the inner wall of the discharge trough 86 is clamped with a sealing plate 87.

[0060] Specifically, by opening filter holes 84 on the inner walls of the first isolation ring 82, the second isolation ring 83 and the screening barrel 81, the graded separation of materials can be achieved, so that materials of different particle sizes can be effectively screened and isolated; the discharge trough 86 opened on the first isolation ring 82, the second isolation ring 83 and the bottom surface of the screening barrel 81, in conjunction with the design of the blocking plate 87, can effectively control the discharge of materials of different particle sizes, ensuring that materials of the required particle size can be smoothly output; grinding balls 85 are arranged on the inner wall of the first isolation ring 82, and the materials can be ground during the screening and isolation process, thereby increasing the grinding effect and improving the product quality; the filter holes 84 on the surface of the first isolation ring 82, the second isolation ring 83 and the screening barrel 81 are arranged in sequence from large to small. Such a design can make the materials be processed more evenly and carefully during the screening and isolation process, thereby improving the screening efficiency.

[0061] Through the design of the screening barrel 81, the first isolation ring 82, the second isolation ring 83 and the blocking plate 87, various advantages such as graded separation of materials, particle size control, grinding efficiency enhancement, reasonable design and convenient operation can be achieved.

[0062] In order to realize the action of removing metal from the fine aggregate ground by the vertical reciprocating fine grinding mechanism 6 and the rotating centrifugal fine grinding mechanism 7, the metal removal mechanism 9 includes a metal ring 91, the top of the metal ring 91 is fixedly installed on the bottom of the guide plate 510, and the metal ring 91 is located between the outer surface of the screening barrel 81 and the inner wall of the grinding box 71, and an electromagnetic coil 92 is installed inside the metal ring 91.

[0063] Specifically implemented in this way, the metal ring 91 is located between the outer surface of the screening barrel 81 and the inner wall of the grinding box 71. Through the cooperation of the metal ring 91 and the electromagnetic coil 92, the metal impurities in the material can be removed. When the metal impurities enter the vicinity of the metal ring 91, the electromagnetic coil 92 will generate a magnetic field to attract and capture the metal impurities and prevent them from further entering the screening barrel 81 or the grinding box 71, thereby ensuring the quality and safety of the product; through the automatic induction and control of the electromagnetic coil 92, the metal removal mechanism 9 can realize automatic metal detection and removal operations, reduce manual intervention and improve production efficiency.

[0064] In order to realize the action of removing dust from the fine aggregate ground by the vertical reciprocating fine grinding mechanism 6 and the rotating centrifugal fine grinding mechanism 7, the dust removal mechanism 10 includes a water tank 101, which is installed between the two supporting legs 1. A filter partition 102 is provided inside the water tank 101, and a water pump 103 is provided at the bottom end of the filter partition 102. The water pump 103 is installed on the inner bottom wall of the water tank 101. A water outlet pipe 104 and a water inlet pipe 105 are fixedly installed on the top and bottom of one side of the water tank 101 respectively. One end of the water outlet pipe 104 is fixedly installed with the water outlet end of the water pump 103, the top of the water outlet pipe 104 is fixedly connected to the inner wall of the top of the grinding box 71, the water outlet end of the water inlet pipe 105 is fixedly connected to the inner wall of one side of the top of the water tank 101, the feed end of the water outlet pipe 104 is fixedly connected to the inner wall of the bottom end of the grinding box 71, and a valve 106 is also provided on the surface of the feed end of the water outlet pipe 104.

[0065] Specifically, the water flow is introduced into the grinding box 71 through the circulating pumping of the filter interlayer 102 and the water pump 103 in the water tank 101 to form a water curtain, which can effectively capture the dust and particulate matter generated when the machine-made sand and aggregate are ground in the water and achieve the purpose of removal; the dust and particulate matter generated when the machine-made sand and aggregate are prepared will pollute the environment if discharged into the air, and the setting of the dust removal mechanism 10 can effectively reduce the emission of dust and protect the environment and human health; a large amount of water is required when manufacturing machine-made sand and aggregate. While removing dust, the dust removal mechanism 10 can realize the recovery and reuse of water, reduce water waste, and save energy and resources;

[0066] Removing dust during the process of making machine-made sand not only protects human health, but also improves product quality, protects equipment and reduces production costs.

[0067] The present invention sets a rough crushing mechanism 5 in the crushing and production of machine-made sand aggregates, so as to achieve the purpose of preliminary crushing of raw materials, crushing large aggregates into a particle size suitable for subsequent processing, and improving production efficiency and product quality; sets a vertical reciprocating fine grinding mechanism 6, so as to further grind the roughly crushed aggregates to achieve the required fineness and particle shape, and improve the physical and chemical properties of the products; sets a rotating centrifugal fine grinding mechanism 7 synchronously, so as to grind the aggregates by rotating centrifugal force, increase the grinding effect and grinding speed, and improve the fineness and uniformity of the products; uses a screening and isolation mechanism 8, so as to screen the ground aggregates. to ensure the particle size distribution and stable quality of the product; and a metal removal mechanism 9: used to remove metal impurities in the aggregate, prevent metal impurities from entering the subsequent process links, protect equipment and improve product safety; and a dust removal mechanism 10: through components such as a water tank 101, a filter partition 102, and a water pump 103, the generated dust and particulate matter are captured in the water to achieve dust removal and protect the environment and human health; thereby achieving multiple processes such as coarse crushing, fine grinding, screening and isolation, metal removal and dust removal of raw materials, thereby improving product quality, protecting equipment, ensuring the safety of the production environment, and improving production efficiency and stability.

[0068] Reference Figure 1-3 , a crushing method of an automatic crushing equipment for making concrete machine-made sand aggregate, step 1, in the production of machine-made sand aggregate, control the aggregate to be input from the top of the feed cover 4, turn on the crushing drive motor 51 to work, drive the crushing shaft 54 ​​to rotate, one crushing shaft 54 ​​rotates to drive the crushing gear 55 at one end to rotate, and drives the other crushing gear 55 to rotate through meshing, thereby making the other crushing shaft 54 ​​rotate synchronously, and the two crushing shafts 54 move toward each other during the synchronous rotation, driving the crushing roller 56 installed on the surface of the crushing shaft 54 ​​to mesh, plug and rotate, so that when large aggregate enters the crushing box 53 and contacts the crushing roller 56, a preliminary rapid crushing operation is performed, so that the crushed aggregate flows into the inside of the grinding box 71 through the guide plate 510.

[0069] Step 2, turn on the power drive motor 1101 to drive the motor shaft 1102 to rotate, thereby driving the driving gear 1103 to rotate. The driving gear 1103 rotates to control the driving gear 75 to rotate, and then the grinding shaft 74 rotates. During the rotation of the grinding shaft 74, the connecting rod 64 on the surface is driven to swing, thereby controlling the bottom end of the protruding rod 65 to slide on the top of the reciprocating drive ring 61, and always moving downward under the dead weight of the grinding shaft 74 and the screening barrel 81. When the bottom of the protruding rod 65 slides on the inner wall of the reciprocating drive groove 63, the grinding shaft 74 is controlled to reciprocate in the vertical direction, and at the same time, the grinding shaft 74 also rotates.

[0070] Step 3: When the grinding shaft 74 performs vertical reciprocating motion and rotational motion simultaneously, it drives the screening barrel 81 on the top to perform vertical reciprocating and rotational motion, and controls the grinding balls 85 on the inner wall to grind the aggregate entering the preliminary crushing under the vertical force and rotational centrifugal force, so that the aggregate is ground into small pieces.

[0071] Step 4: As the screening barrel 81 rotates, the fine aggregates on the inner wall are isolated and separated layer by layer through the filter holes 84, and while grinding, the electromagnetic coil 92 is energized to make the surface of the metal ring 91 magnetic, thereby absorbing the metal elements of the aggregates and making the metal powder adsorbed on the surface of the metal ring 91. When the grinding is completed, the internal aggregates are dispersed layer by layer outside the first isolation ring.

[0072] Step 5. After the grinding is completed, the water pump 103 inside the water tank 101 is controlled to work to extract the water inside the water tank 101 and enter the inside of the grinding box 71. Under the vertical reciprocating and rotating centrifugal motion of the screening barrel 81, the water on the inner wall is driven to collide and clean with the ground aggregate to clean the dust on its surface. After cleaning, the internal cleaning water is controlled to flow into the water tank 101 again by opening the valve 106, and the dust is filtered through the filter partition. The filtered water flows to the bottom and waits for the next cleaning operation. At the same time, the screening barrel 81 continues to move vertically and rotate centrifugally to dehydrate the aggregate stored inside. After dehydration, the power drive motor 1101 is stopped, and the sealing plate 73 is opened to first close the electromagnetic coil 92 to make the metal powder fall and clean it, and then open the sealing plate 87 at the corresponding position to remove and collect the aggregate inside.

[0073] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic crushing device for concrete machine-made sand aggregate, comprising a support leg (1), characterized in that: A top plate (2) is fixedly mounted on the top of each of the four supporting legs (1); a feed trough (3) is provided at the center of the top of the top plate (2); a feed cover (4) is fixedly mounted on the inner wall of the feed trough (3); the feed cover (4) is in the shape of a funnel; a coarse crushing mechanism (5) is provided at the bottom of the top plate (2); the coarse crushing mechanism (5) realizes the action of initial and rapid crushing of aggregates; The bottom of the coarse crushing mechanism (5) is respectively provided with a vertical reciprocating fine grinding mechanism (6), a rotary centrifugal fine grinding mechanism (7), a screening and separation mechanism (8), a metal removal mechanism (9), a dust removal mechanism (10) and a power drive mechanism (11); The coarse crushing mechanism (5) comprises a crushing drive motor (51), a driving base plate (52) is fixedly mounted on one side surface of the two supporting legs (1), a top of one side of the driving base plate (52) is fixedly mounted on the mounting surface of the crushing drive motor (51), a crushing box (53) is fixedly mounted on the top side surface of the four supporting legs (1), both opposite surfaces of the crushing box (53) are rotatably connected to a crushing shaft (54) via a bearing, one end of the two crushing shafts (54) is fixedly mounted with a crushing gear (55), the gear teeth of the two crushing gears (55) are meshed with tooth grooves, and the other end of one of the crushing shafts (54) is fixedly mounted on the output shaft of the crushing drive motor (51) via a coupling; The two crushing shafts (54) are both slidably plugged with crushing rollers (56) and spacers (57) through hexagonal surfaces; the plurality of crushing rollers (56) and the plurality of spacers (57) are linearly arranged and distributed; the opposing surfaces of every two crushing rollers (56) squeeze one spacer (57); the opposing surfaces of the two spacers (57) squeeze one crushing roller (56); the plurality of crushing rollers (56) and the plurality of spacers (57) mounted on the surfaces of the two crushing shafts (54) are mutually meshed and arranged; auxiliary plates (58) are fixedly mounted on the opposing inner walls of the other two sides of the crushing box (53); auxiliary blocks (59) are linearly mounted on the surface of the auxiliary plates (58); the opposing surfaces of the plurality of auxiliary blocks (59) are respectively slidably plugged with the surfaces of the plurality of crushing rollers (56); a guide plate (510) is fixedly mounted on the bottom of the crushing box (53); the inner bottom wall of the guide plate (510) is inclined; The vertical reciprocating fine grinding mechanism (6) realizes the action of reciprocating fine grinding in the vertical direction for the aggregates that have been quickly crushed by the rough crushing mechanism (5); The rotary centrifugal fine grinding mechanism (7) realizes the action of fine grinding the aggregate after rapid crushing by the coarse crushing mechanism (5) by means of a horizontal rotary centrifugal motion; The screening and separation mechanism (8) realizes the action of screening and separating the fine aggregates ground by the vertical reciprocating fine grinding mechanism (6) and the rotary centrifugal fine grinding mechanism (7); The metal removal mechanism (9) realizes the action of removing metal from the fine aggregate ground by the vertical reciprocating fine grinding mechanism (6) and the rotary centrifugal fine grinding mechanism (7); The dust removal mechanism (10) realizes the action of removing dust from the fine aggregate ground by the vertical reciprocating fine grinding mechanism (6) and the rotary centrifugal fine grinding mechanism (7); The power drive mechanism (11) realizes the action of driving the vertical reciprocating fine grinding mechanism (6) and the rotary centrifugal fine grinding mechanism (7) to operate.

2. The automatic crushing equipment for concrete machine-made sand aggregate according to claim 1 is characterized by: The rotary centrifugal fine grinding mechanism (7) comprises a grinding box (71), the top of the grinding box (71) is fixedly mounted on the bottom of the guide plate (510), the top feed port of the grinding box (71) corresponds to the discharge port of the guide plate (510), a discharge groove (72) is provided on one side surface of the grinding box (71), the inner wall of the discharge groove (72) is connected to a sealing plate (73) by screw threads, the sealing plate (73) is sealed to the discharge groove (72) by a sealing gasket, a grinding shaft (74) is slidably inserted into the center of the inner bottom wall of the grinding box (71) by a sealing ring, the bottom end of the grinding shaft (74) passes through and extends to the bottom of the grinding box (71), and a driving gear (75) is also fixedly mounted on the bottom end.

3. The automatic crushing equipment for concrete machine-made sand aggregate according to claim 2 is characterized by: The vertical reciprocating fine grinding mechanism (6) comprises a reciprocating drive ring (61); a connecting rod (62) is installed in an annular array at the bottom of the grinding box (71); the connecting rod (62) is L-shaped; the opposing surfaces of the three connecting rods (62) are fixedly installed on the arc surface of the reciprocating drive ring (61); a reciprocating drive groove (63) is opened at the top of the reciprocating drive ring (61); a connecting rod (64) is fixedly installed on the bottom arc surface of the grinding shaft (74); a convex rod (65) is fixedly installed at one end of the connecting rod (64); the bottom end of the convex rod (65) is hemispherical; the inner wall of the reciprocating drive groove (63) is slidably plugged with the bottom end of the convex rod (65); the inner wall of the reciprocating drive ring (61) is rotatably connected to a limiting sleeve (66) via a bearing; the inner wall of the limiting sleeve (66) is plugged with the arc surface of the grinding shaft (74) via a key bar.

4. The automatic crushing equipment for concrete machine-made sand aggregate according to claim 3 is characterized by: The power drive mechanism (11) comprises a power drive motor (1101), the mounting surface of the power drive motor (1101) being fixedly mounted to the bottom of the reciprocating drive ring (61), the output shaft of the power drive motor (1101) being fixedly mounted to a motor shaft (1102) via a coupling, the bottom of the motor shaft (1102) being fixedly mounted to a driving gear (1103), the gear teeth of the driving gear (1103) being meshed with the tooth grooves of the driving gear (75).

5. The automatic crushing equipment for concrete machine-made sand aggregate according to claim 4 is characterized by: The screening and isolating mechanism (8) comprises a screening barrel (81), the bottom of the screening barrel (81) being fixedly mounted on the top of the grinding shaft (74), the inner bottom wall of the screening barrel (81) being respectively fixedly mounted with a first isolating ring (82) and a second isolating ring (83), the first isolating ring (82), the second isolating ring (83) and the inner wall of the screening barrel (81) being provided with filter holes (84), the filter holes (84) on the surfaces of the first isolating ring (82), the second isolating ring (83) and the screening barrel (81) being arranged in descending order, the inner wall of the first isolating ring (82) being provided with grinding balls (85), the inner bottom surface of the first isolating ring (82), the inner bottom surface of the second isolating ring (83) and the inner bottom surface of the screening barrel (81) being provided with a discharge trough (86), the inner wall of the discharge trough (86) being clamped with a blocking plate (87).

6. The automatic crushing equipment for concrete machine-made sand aggregate according to claim 5 is characterized by: The metal removal mechanism (9) comprises a metal ring (91), the top of the metal ring (91) is fixedly mounted to the bottom of the guide plate (510), and the metal ring (91) is located between the outer surface of the screening barrel (81) and the inner wall of the grinding box (71), and an electromagnetic coil (92) is installed inside the metal ring (91); The dust removal mechanism (10) comprises a water tank (101), the water tank (101) being installed between the two supporting legs (1), a filter partition (102) being provided inside the water tank (101), a water pump (103) being provided at the bottom end of the filter partition (102), the water pump (103) being installed on the inner bottom wall of the water tank (101), and a water outlet pipe (104) and a water inlet pipe (105) being fixedly installed on the top and bottom of one side of the water tank (101) respectively. ), one end of the water outlet pipe (104) is fixedly mounted to the water outlet end of the water pump (103), the top end of the water outlet pipe (104) is fixedly connected to the top inner wall of the grinding box (71), the water outlet end of the water inlet pipe (105) is fixedly connected to the inner wall of one side of the top of the water tank (101), the feed end of the water outlet pipe (104) is fixedly connected to the bottom inner wall of the grinding box (71), and a valve (106) is also provided on the surface of the feed end of the water outlet pipe (104).

7. The crushing method of the automatic crushing equipment for crushing concrete machine-made sand aggregate according to any one of claims 1 to 6, characterized in that: Step 1: During the production of machine-made sand aggregate, aggregate is input from the top of the feed cover (4), and the crushing drive motor (51) is turned on to drive the crushing shaft (54) to rotate. The rotation of one crushing shaft (54) drives the crushing gear (55) at one end to rotate, and drives the other crushing gear (55) to rotate through meshing, thereby causing the other crushing shaft (54) to rotate synchronously. The two crushing shafts (54) move toward each other during the synchronous rotation, driving the crushing roller (56) installed on the surface of the crushing shaft (54) to mesh, plug and rotate, so that when large aggregate enters the crushing box (53) and contacts the crushing roller (56), a preliminary rapid crushing operation is performed, so that the crushed aggregate flows into the grinding box (71) through the guide plate (510); Step 2: Turn on the power drive motor (1101) to drive the motor shaft (1102) to rotate, thereby driving the driving gear (1103) to rotate. The driving gear (1103) rotates to control the driving gear (75) to rotate, thereby causing the grinding shaft (74) to rotate. During the rotation of the grinding shaft (74), the connecting rod (64) on the surface is driven to swing, thereby controlling the bottom end of the protruding rod (65) to slide on the top of the reciprocating drive ring (61), and always moving downward under the dead weight of the grinding shaft (74) and the screening barrel (81). When the bottom of the protruding rod (65) slides on the inner wall of the reciprocating drive groove (63), the grinding shaft (74) is controlled to reciprocate in the vertical direction, and at the same time, the grinding shaft (74) also rotates; Step 3: When the grinding shaft (74) performs vertical reciprocating motion and rotational motion simultaneously, the screening barrel (81) on the top is driven to perform vertical reciprocating motion and rotational motion, and the grinding balls (85) on the inner wall are controlled to grind the aggregate entering the preliminary crushing under the coordination of vertical force and rotational centrifugal force, so that the aggregate is ground into fine particles; Step 4: As the screening barrel (81) rotates, the fine aggregate on the inner wall is isolated and separated layer by layer through the filter holes (84), and while grinding, the electromagnetic coil (92) is controlled to be energized to make the surface of the metal ring (91) magnetic, thereby absorbing the metal elements of the aggregate, so that the metal powder is adsorbed on the surface of the metal ring (91). When the grinding is completed, the internal aggregate is dispersed layer by layer outside the first isolation ring; Step 5. After the grinding is completed, the water pump (103) inside the water tank (101) is controlled to work to extract water from the water tank (101) and enter the grinding box (71). Under the vertical reciprocating and rotating centrifugal motion of the screening barrel (81), the water on the inner wall is driven to collide with the ground aggregate for cleaning, so that the dust on the surface is cleaned. After cleaning, the valve (106) is opened to control the internal cleaning water to flow into the water tank (101) again, and the dust is filtered through the filter partition. The filtered water flows to the bottom to wait for the next cleaning operation. At the same time, the screening barrel (81) continues to vertically reciprocate and rotate centrifugally to dehydrate the aggregate stored inside. After dehydration, the power drive motor (1101) is stopped, the sealing plate (73) is opened, and the electromagnetic coil (92) is first closed to make the metal powder fall and clean it, and then the sealing plate (87) at the corresponding position is opened to discharge and collect the aggregate inside.

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