CN108816474A - The finely divided wind filter mechanism of recycled aggregate of waste concrete - Google Patents

Abstract

The invention discloses a finely crushed wind-powered screening mechanism for recycled aggregates of waste concrete, which comprises a pre-crushed disc assembly, a centrifugal crushing and feeding device, a licker-in roller pressing type crushing device, and a wind-powered screening device. The centrifugal crushing and feeding device is located under the pre-crushing disc assembly, and the licker-in crushing device is located under the centrifugal crushing and feeding device; the wind screening device is used to screen the powder falling from the feeding port point. The pulverization of the present invention integrates multiple pulverization methods such as centrifugal pulverization, rolling pulverization, and rolling pulverization, and utilizes the advantages of large volume and large load of centrifugal pulverization for pre-crushing, thereby reducing the load of subsequent pulverization and improving the efficiency of subsequent pulverization , in the transitional blanking stage, the transitional crushing is carried out by the way of centrifugal crushing and blanking at the same time, and then the crushing method combined with rolling crushing and rolling crushing is used to realize the intense extrusion and agitation of the target position and the thorough crushing of the particles .

Description

Fine crushing wind screening mechanism for waste concrete recycled aggregate

technical field

The invention relates to the technical field of building materials, in particular to a finely crushed wind-powered screening mechanism for recycled aggregates of waste concrete.

Background technique

With the development of social economy, the process of urban-rural integration, and the expansion of urban scale, hundreds of millions of tons of waste concrete are produced every year due to demolition, reconstruction, maintenance and repair. If waste concrete is directly stacked or landfilled, it will not only cost a lot of freight, but also cause secondary pollution to the environment. If the waste concrete can be refined to realize resource recycling, it can not only reduce environmental pollution, protect the ecological environment, and meet the requirements of sustainable development; at the same time, it can save energy and reduce cost consumption.

Aggregate is a granular loose material that acts as a skeleton or filling in concrete. Including coarse aggregate and fine aggregate, among which coarse aggregate is aggregate with a particle size greater than 5mm, called coarse aggregate, and fine aggregate is aggregate with a diameter of less than 5mm.

Waste concrete recycled aggregates include pretreatment, sorting, crushing, crushing, screening, grading and other processes according to the process flow from front to back: Among them, pretreatment is to hammer concrete blocks with a particle size greater than 300mm to remove Steel bars and various impurities; sorting is to sort the pretreated concrete blocks to remove iron impurities and non-ferrous impurities in turn; crushing is to crush the sorted concrete blocks; crushing is to crush The final large particles are crushed to form small particles; sieving is to sieve the crushed small particles, and obtain particles with a particle size of 20-40mm, 5-20mm and less than 5mm; The 5mm recycled concrete aggregate is subjected to wind classification treatment to remove fine powder with a particle size of less than 0.15mm, and obtain particles of 0.15-0.5mm. The fine crushing and screening treatment of crushed concrete blocks, that is, the processing efficiency and fineness of crushing, screening, grading and other processes are important links that affect the extraction amount, extraction rate, and extraction efficiency of recycled aggregates.

However, in the prior art, roller crushing and impeller knife rotary cutting are mostly used for crushing. The crushing effect of roller crushing only exists in the gap area between the pair of rollers, resulting in small processing capacity per unit time, slow work efficiency, and low work accuracy. However, the rotary cutting of the impeller knife has the disadvantages of greater damage to the impeller knife, the need to change the cutter frequently, and the disadvantage of inconvenient blanking. In addition, most of the crushing in the prior art is a single-stage crushing method, which leads to low aggregate recovery efficiency of recycled concrete, so repeated crushing is required, resulting in poor flow of industrial operations.

Contents of the invention

The invention aims at the deficiencies of the prior art, and provides a fine crushing wind-powered screening mechanism for recycled aggregates of waste concrete, which has good crushing effect and improves the aggregate recovery rate of recycled concrete.

The present invention solves the above-mentioned technical problems through the following technical means: a finely crushed wind-powered screening mechanism for waste concrete recycled aggregates, including a pre-crushed disc assembly, a centrifugal crushing and feeding device, a licker-in crushing device, and a wind-powered screening mechanism. device;

The pre-crushing disc assembly includes a guide table and a stopper; the guide table is in the shape of a circular platform with a narrower upper end and a wider lower end, and the periphery of the stopper is on the side of the guide table and the bottom of the stopper is in contact with the The side of the guide table is connected or contacted by rotation, which includes an inner block layer and an outer block layer, and a blanking gap that penetrates up and down is provided on the inner layer block layer; at the bottom of the blanking gap A material guide tube is connected, and the discharge end of the material guide tube is inclined downward until the central axis intersects with the central axis of the guide table; the inner surface of the inner block layer is a rolling socket wall; the The guide table is driven to rotate by the guide table motor; the rotation direction of the guide table is opposite to that of the stopper;

The centrifugal crushing and feeding device is located below the material guide pipe, and the centrifugal crushing and feeding device includes a drum and a rotating assembly; the drum has upper and lower openings, and the bottom of the feed pipe is located on the top of the drum. Above the opening, the rotating assembly is oblique and limited in the inner cavity of the drum in a rotationally fit manner; the rotating assembly includes a first rotating member and a second rotating member, and one end of the first rotating member It is connected with a section of the inner wall of the inner cavity of the drum, and its other end is inclined downward; one end of the second rotating member is hinged with the other end of the first rotating member, and the other end of the second rotating member It can be inclined downward to contact with another section of the inner wall of the inner cavity of the drum; a torsion spring is installed at the hinge of the second rotating member and the first rotating member, and the other part of the second rotating member The bottom of one end is sucked or engaged with the other inner wall of the inner cavity of the drum;

The licker-in crushing device includes a crushing chamber, and the crushing chamber is connected up and down; the crushing chamber is provided with an upper pressing plate, a lower pressing plate, an acupuncture roller, and a blanking plate, and there are a plurality of acupuncture rollers. A row is arranged horizontally with each other, and the upper pressing plate and the lower pressing plate are respectively located above and below the acupuncture roller; the upper pressing plate and the lower pressing plate can move toward each other or move backwards in the vertical direction and the upper pressing plate, the lower pressing plate The sides of the lower pressing plate are all in sealing contact with the inner side wall of the crushing chamber; a feeding port is opened on the upper pressing plate, and a feeding opening is opened on the lower pressing plate, and the feeding opening passes through the The blanking plate is covered; the downward movement of the lower pressing plate can realize the downward turning of the blanking plate and cause the opening of the blanking port;

The wind screening device is used to screen the powder falling from the feeding opening.

Preferably, a sieve is installed at the blanking gap; the bottom edge of the side of the guide table is bent upward to form a U-shaped flanging structure, and the bottom edge of the inner surface of the inner block layer is in an inverted S shape structure, the inverted S-shaped structure is in contact with the U-shaped flanging structure;

Preferably, the inner wall of the drum is provided with acupuncture or the inner wall of the drum is a concave-convex surface, and the upper surface of the rotating assembly is also provided with acupuncture or the upper surface of the rotating assembly is concave-convex.

Preferably, the bottom surface of the upper pressing plate and the top surface of the lower pressing plate are concave-convex surfaces; a plurality of screw rods are vertically arranged in the crushing chamber, and the thread direction of the upper section of each screw rod and the lower section of the screw rod is On the contrary, the upper pressing plate is sleeved on the upper section of the screw rod through the first screw sleeve, and the lower pressing plate is sleeved on the lower section of the screw rod through the second screw sleeve; One side is hinged, and a second torsion spring is installed at the hinge of the material plate and the blanking port; the other end of the blanking plate is a free end, and the free end of the blanking plate can be engaged or sucked on the On the other side of the blanking port; the lower section of the screw rod is slidably fitted with a sliding sleeve, and the sliding sleeve is connected to the bottom of the lower pressing plate through a first elastic member. The free end is connected with the sliding sleeve through a second elastic member.

Preferably, the number of the needling rollers is an odd number, and the end of each needling roller is sleeved with a first rolling wheel, and all the first rolling wheels are connected by a first rolling belt; one of the first rolling wheels The wheel is driven by the first scroll wheel motor, the first bevel gear is sleeved on the output shaft of the first scroll wheel motor, and the second bevel gear is sleeved on one of the screw rods, the first bevel gear The mutual transmission between the bevel gear and the second bevel gear is realized through the reversing assembly; the reversing assembly includes the third bevel gear, the fourth bevel gear, the first bevel gear and the third bevel gear gear meshing, the third bevel gear is connected to the fourth bevel gear through a shaft, and the fourth bevel gear is meshing with the second bevel gear; each screw rod is also sleeved with a second rolling wheel , all screw rods are connected by the second roller belt.

Preferably, the number of the needling rollers is an even number, from the needling rollers at the starting position to the needling rollers at the end position in groups of two or two, and the ends of each group of needling rollers are respectively sleeved with first gear, the second gear, the first gear and the second gear mesh, and the first gear teeth are driven by the first gear motor; the first bevel gear is sleeved on the output shaft of the first gear motor, A second bevel gear is sleeved on one of the screw rods, and the mutual transmission between the first bevel gear and the second bevel gear is realized through a reversing assembly; the reversing assembly includes a third bevel gear, the fourth bevel gear, the first bevel gear is meshed with the third bevel gear, the third bevel gear is connected with the fourth bevel gear through a shaft, the fourth bevel gear is connected with the The second bevel gear meshes; each screw mandrel is also sleeved with a second rolling wheel, and all the screw mandrels are connected through the second rolling wheel belt.

Preferably, a guide plate assembly is provided at the bottom of the crushing chamber, and the guide plate assembly includes a first inclined plate and a second inclined plate; the first inclined plate and the second inclined plate are respectively located at the bottom of the crushing chamber The two ends are inclined towards each other; wherein, the extension line of the central axis of the second inclined plate from top to bottom intersects the central axis of the first inclined plate from top to bottom.

Preferably, the wind screening device includes a blower fan, a bottom plate, and a blanking inclined plate; along the length direction of the bottom plate, a blanking channel is arranged at intervals, and the bottom of each blanking channel is provided with a blanking inclined plate; The blower is used to blow the powder falling from the feeding opening into the corresponding feeding slot according to the gravity.

Preferably, the sides of the upper pressing plate and the lower pressing plate are in sealing contact with the inner sidewall of the crushing chamber through a rubber layer; a feeding channel with a serpentine structure is installed on the feeding port; the upper end of the feeding channel is open Wider and narrower at the lower end.

The invention also discloses a fine crushing mechanism for recycled aggregate of waste concrete, which includes a pre-crushing disc assembly, a centrifugal crushing and feeding device, and a licker-in crushing device;

The pre-crushing disc assembly includes a guide table and a stopper; the guide table is in the shape of a circular platform with a narrower upper end and a wider lower end, and the periphery of the stopper is on the side of the guide table and the bottom of the stopper is in contact with the The side of the guide table is connected or contacted by rotation, which includes an inner block layer and an outer block layer, and a blanking gap that penetrates up and down is provided on the inner layer block layer; at the bottom of the blanking gap A material guide tube is connected, and the discharge end of the material guide tube is inclined downward until the central axis intersects with the central axis of the guide table; the inner surface of the inner block layer is a rolling socket wall; the The guide table is driven to rotate by the guide table motor; the rotation direction of the guide table is opposite to that of the stopper;

The centrifugal crushing and feeding device is located below the material guide pipe, and the centrifugal crushing and feeding device includes a drum and a rotating assembly; the drum has upper and lower openings, and the bottom of the feed pipe is located on the top of the drum. Above the opening, the rotating assembly is oblique and limited in the inner cavity of the drum in a rotationally fit manner; the rotating assembly includes a first rotating member and a second rotating member, and one end of the first rotating member It is connected with a section of the inner wall of the inner cavity of the drum, and its other end is inclined downward; one end of the second rotating member is hinged with the other end of the first rotating member, and the other end of the second rotating member It can be inclined downward to contact with another section of the inner wall of the inner cavity of the drum; a torsion spring is installed at the hinge of the second rotating member and the first rotating member, and the other part of the second rotating member The bottom of one end is sucked or engaged with the other inner wall of the inner cavity of the drum;

The licker-in crushing device includes a crushing chamber, and the crushing chamber is connected up and down; the crushing chamber is provided with an upper pressing plate, a lower pressing plate, an acupuncture roller, and a blanking plate, and there are a plurality of acupuncture rollers. A row is arranged horizontally with each other, and the upper pressing plate and the lower pressing plate are respectively located above and below the acupuncture roller; the upper pressing plate and the lower pressing plate can move toward each other or move backwards in the vertical direction and the upper pressing plate, the lower pressing plate The sides of the lower pressing plate are all in sealing contact with the inner side wall of the crushing chamber; a feeding port is opened on the upper pressing plate, and a feeding opening is opened on the lower pressing plate, and the feeding opening passes through the The blanking plate is covered; the downward movement of the lower pressing plate can realize the downward turning of the blanking plate and cause the opening of the blanking port.

The advantage of the present invention is that: the crushing of the present invention integrates multiple crushing methods such as centrifugal crushing, rolling crushing, and rolling crushing, and pre-crushing is carried out by utilizing the advantages of large volume and large load of centrifugal crushing, thereby reducing the load of subsequent crushing, Improve the efficiency of subsequent crushing. In the transitional blanking stage, the transitional crushing is carried out by means of centrifugal crushing and blanking at the same time, and then the crushing method combined with rolling crushing and rolling crushing is used to achieve intense extrusion and agitation of the target position. , to achieve thorough crushing of particles; each crushing stage of the present invention complements each other and has strong coherence, and each crushing stage operates sequentially, which can greatly improve crushing efficiency.

In the pre-crushing stage of the present invention, the guide table and the block are rotated at the same time and the direction of rotation of the guide table is opposite to that of the block. Compared with the one-way rotation, the intensity and the number of impacts of the particles are improved; The crushing stage adopts rotary sequential feeding, that is, the feeding position is consistent with the specific position of the feeding gap, and the particle feeding position is inconsistent, so the present invention tilts down to the central axis and guides through the discharge end of the material guide pipe. The sieved particles can achieve consistent discharge position until the central axis of the table intersects.

The centrifugal crushing and unloading device of the present invention can also realize the effect of unloading while pulverizing along with pulverization on the premise of functioning as a transition conveying device. In the licker-in crushing stage, the invention utilizes the upper and lower pressing plates that can move up and down to cooperate with the rolling needling rollers to realize simultaneous rolling, agitation, extrusion crushing, and greatly improve the crushing effect. All sieves and screen cloths in the present invention are preferably vibrating screens of the prior art.

Description of drawings

Fig. 1 is a schematic diagram of the side structure of a finely crushed wind-powered screening mechanism for waste concrete regenerated aggregates of the present invention.

Fig. 2 is a three-dimensional schematic diagram of a finely pulverized wind-powered screening mechanism for waste concrete regenerated aggregate of the present invention.

Fig. 3 is a structural schematic diagram of a pre-crushing disc assembly in a fine-grinding wind-powered screening mechanism for waste concrete recycled aggregates according to the present invention.

Fig. 4 is a schematic diagram of the internal structure of a centrifugal crushing and unloading device in a finely crushed wind-powered screening mechanism for recycled aggregates of waste concrete according to the present invention.

Fig. 5 is a structural schematic diagram of a rotating assembly in a finely crushed wind-powered screening mechanism for waste concrete recycled aggregates according to the present invention.

Fig. 6 is a partially enlarged schematic diagram of Fig. 5 in the present invention.

Fig. 7 is a structural schematic diagram of a licker-in type crushing device in a fine crushing wind-force screening mechanism for recycled aggregate of waste concrete according to the present invention.

Fig. 8 is a structural schematic diagram of a blanking plate in a finely crushed wind-powered screening mechanism for waste concrete regenerated aggregates of the present invention.

Fig. 9 is a structural schematic diagram of an upper platen in a finely crushed wind-powered screening mechanism for waste concrete regenerated aggregates of the present invention.

Fig. 10 is a schematic diagram of the structure of the first gear and the second gear in the matching state of a finely crushed wind-powered screening mechanism for recycled aggregates of waste concrete according to the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

Example 1

As shown in Figure 1, this embodiment discloses a finely crushed wind-powered screening mechanism for waste concrete recycled aggregates, including a pre-crushed disc assembly 105, a centrifugal crushing and feeding device 106, a licker-in crushing device 107, and a wind-powered screening mechanism. device 108 .

As shown in FIGS. 2-3 , the pre-shredded disc assembly 105 includes a guide table 1051 and a stopper. The guide platform 1051 is in the shape of a circular platform with a narrower upper end and a wider lower end. The periphery of the stopper is on the side of the guide platform 1051 and the bottom of the stopper is rotationally connected or in contact with the side surface of the guide platform 1051. It includes an inner stopper layer 10521 and an outer Layer stopper layer 10522 and inner stopper layer 10521 are provided with a blanking gap 1053 that penetrates up and down. Preferably, a screen (not shown) is installed at the blanking gap 1053 . A feed pipe 1054 is connected to the bottom of the blanking gap 1053, and the discharge end of the feed pipe 1054 is inclined downward until the central axis intersects with the central axis of the guide platform 1051. The inner surface of the inner block layer 10521 is the wall of the socket. The guide table 1051 is driven to rotate by the guide table motor. The direction of rotation of the guide table 1051 is opposite to that of the stopper.

As shown in Figures 4-7, the centrifugal crushing and feeding device 106 is located below the material guide pipe 1054, and the centrifugal crushing and feeding device 106 includes a drum 1061 and a rotating assembly. The drum 1061 has upper and lower openings, the bottom of the material guide tube 1054 is located above the top opening of the drum 1061 , and the rotating assembly is inclined and limited in the inner cavity of the drum 1061 in a rotationally fit manner. The rotating assembly includes a first rotating member 10621 and a second rotating member 10622. One end of the first rotating member 10621 is connected to a section of the inner wall of the inner cavity of the drum 1061, and the other end is inclined downward. One end of the second rotating member 10622 is hinged to the other end of the first rotating member 10621 , and the other end of the second rotating member 10622 can be inclined downward to contact another section of the inner wall of the inner cavity of the drum 1061 . A torsion spring 10623 is installed at the hinge between the second rotating member 10622 and the first rotating member 10621, and the bottom of the other end of the second rotating member 10622 is sucked or engaged with another section of the inner wall of the inner cavity of the drum 1061 .

As shown in FIGS. 7-8 , the licker-in crushing device 107 includes a crushing chamber, and the crushing chamber is connected up and down. The crushing chamber is provided with an upper platen 1071, a lower platen 1072, an acupuncture roller 1073, and a lower plate 1074. There are a plurality of acupuncture rollers 1073, which are horizontally distributed in a row. The upper platen 1071 and the lower platen 1072 are respectively located 1073 above and below. The upper pressing plate 1071 and the lower pressing plate 1072 can move towards each other or move backwards in the vertical direction, and the sides of the upper pressing plate 1071 and the lower pressing plate 1072 are in sealing contact with the inner sidewall of the crushing chamber. On the upper pressing plate 1071, a feeding opening is provided, and on the lower pressing plate 1072, a feeding opening is provided, and the feeding opening is covered by the cutting plate 1074. The downward movement of the lower pressing plate 1072 can realize the downward turning of the blanking plate 1074 and cause the opening of the blanking port.

The wind screening device 108 is used to screen the powder falling from the discharge port.

In the present invention, the large particles crushed by the crushing device fall onto the guide platform 1051, and flow downward under the guidance of the guide platform 1051, and stay on the side of the guide platform 1051 under the blocking action of the stopper, and pass through The guide table motor drives the guide table 1051 to rotate, rotate the stopper, the guide table 1051 rotates to generate centrifugal force, cooperates with the wall of the rolling mortar, can realize the pre-crushing of agglomerates and lumps in the large particles, stop the guide table 1051 from rotating or lower The guide table 1051 rotates at a high speed, and the pre-crushed particles are sieved into the feed pipe 1054 through a sieve. The particles fall into the drum 1061 and are limited on the rotating assembly. The motor of the rotating assembly is started to drive the rotating assembly to rotate. When the weight of the particles on the drum exceeds the bearing load of the second rotating member 10622, the other end of the second rotating member 10622 is separated from the inner cavity of the drum 1061, and the second rotating member 10622 rotates downward, and the particles are transferred from the second rotating member 10622 to the drum 1061. Openings between the inner cavities of the roller 1061 drop down, and then, under the rebound action of the torsion spring 10623 , the bottom of the other end of the second rotating member 10622 is sucked or engaged with the inner cavity of the roller 1061 . Particles falling from the opening between the second rotating member 10622 and the inner cavity of the drum 1061 fall into the middle crushing chamber and are limited in the space formed between the crushing chamber, the upper pressing plate 1071 and the lower pressing plate 1072 . Move the upper pressing plate 1071 and the lower pressing plate 1072 towards each other and start the rolling of the acupuncture roller 1073, the particles in this space are crushed by the pressing force of the upper pressing plate 1071, the lower pressing plate 1072 and the rolling of the acupuncture roller 1073, and the particles are extremely To crush to a large extent, the upper pressing plate 1071 and the lower pressing plate 1072 are reset, and the lower pressing plate 1072 continues to move downward, and the lower pressing plate 1074 is flipped downward so that the crushed particles fall from the opening of the feeding port, and the crushing process is completed.

The particles falling from the opening of the feeding port are screened through the particles passing through the sieve, and the particles with a particle size of less than 5mm are discharged at a high altitude, and the fine dust with a particle size of less than 0.15-0.1mm is separated by the wind screening device 108, Impurities, complete sieving.

The pulverization of the present invention integrates multiple pulverization methods such as centrifugal pulverization, rolling pulverization, and rolling pulverization, and utilizes the advantages of large volume and large load of centrifugal pulverization for pre-crushing, thereby reducing the load of subsequent pulverization and improving the efficiency of subsequent pulverization , in the transitional blanking stage, the transitional crushing is carried out by the way of centrifugal crushing and blanking at the same time, and then the crushing method combined with rolling crushing and rolling crushing is used to realize the intense extrusion and agitation of the target position and the thorough crushing of the particles ; Each crushing stage of the present invention complements each other, and the coherence is strong, and each crushing stage operates sequentially, which can greatly improve the crushing efficiency. In the pre-crushing stage of the present invention, the guide table 1051 and the block are rotated at the same time, and the direction of rotation of the guide table 1051 is opposite to that of the block. Compared with unidirectional rotation, the intensity of particle impact and the number of impacts are improved; In the pre-crushing stage of the invention, the rotary sequential feeding is adopted, that is, the feeding position is consistent with the specific position of the feeding gap 1053, and the particle feeding position is inconsistent, so the present invention tilts downward through the discharge end of the material guide pipe 1054 to Until the central axis intersects with the central axis of the guide table 1051, the sieved particles can achieve consistent discharge position all the time. The centrifugal crushing and unloading device 106 of the present invention can also realize the effect of unloading while pulverizing along with pulverization under the premise of serving as a transition conveying device. In the licker-in crushing stage, the present invention utilizes the upper platen 1071 and the lower platen 1072 that can move up and down and the needling roller 1073 that can roll to realize the synchronous rolling, agitation, extrusion crushing, and greatly improve the crushing effect. All sieves and screen cloths in the present invention are preferably vibrating screens of the prior art.

In some embodiments, the bottom edge of the side surface of the guide platform 1051 is bent upward to form a U-shaped flange structure, and the bottom edge of the inner side surface of the inner block layer 10521 is in an inverted S-shaped structure, and the inverted S-shaped structure and the U-shaped flange structure in contact. Since the bottom edge of the side surface of the guide table 1051 of the present invention is connected to the bottom edge of the inner surface of the inner block layer 10521, the relative rotation of the two can be ensured, the tightness of the combination between the two can be ensured, and material leakage can be prevented. .

In some embodiments, the inner wall of the drum 1061 is provided with acupuncture or the inner wall of the drum 1061 is a concave-convex surface, and the upper surface of the rotating assembly is also provided with acupuncture or the upper surface of the rotating assembly is concave-convex.

Example 2

As shown in FIGS. 7 and 8 , the difference between this embodiment and the above-mentioned embodiments is that the bottom surface of the upper pressing plate 1071 and the top surface of the lower pressing plate 1072 are concave-convex surfaces. A plurality of screw mandrels 1075 are vertically arranged in the crushing chamber, and the thread directions of the upper section of each screw mandrel 1075 and the lower section of the screw mandrel 1075 are opposite. 1072 is sleeved on the lower section of the screw rod 1075 through the second screw sleeve. One end of the blanking plate 1074 is hinged with one side of the blanking port, and a second torsion spring 1078 is installed at the hinge of the blanking plate 1074 and the blanking port; The free end can snap or suck on the other side of the discharge port. The lower segment of the screw mandrel 1075 is slidably fitted with a sliding sleeve 1077, which is connected with the bottom of the lower pressing plate 1072 by a first elastic member (not shown in the figure), and the free end of the blanking plate 1074 is connected to the sliding sleeve. The sleeves 1077 are connected by a second elastic member 1079 .

The present invention realizes that the upper pressing plate 1071 and the lower pressing plate 1072 move toward each other or move backwards through the rotation of the screw mandrel 1075 . When the lower pressing plate 1072 moves downward until the bottom of the lower pressing plate 1072 contacts the sliding sleeve 1077, the particles fall into the space between the upper pressing plate 1071 and the acupuncture roller 1073, and the lower pressing plate 1072 continues to move downward, driving the sliding sleeve 1077 to Moving down, the second elastic member 1079 is elongated, the first elastic member is compressed, and the second elastic member 1079 is elongated to generate a contraction force until the free end of the blanking plate 1074 is separated from the blanking port, and the blanking plate 1074 is flipped to realize The blanking of particles on the lower platen 1072. After the blanking is completed, the lower pressing plate 1072 resets, the sliding sleeve 1077 resets, the second torsion spring 1078 resets, and the free end of the blanking plate 1074 can be engaged again or sucked on the other side of the blanking port. In the present invention, unloading can be realized through the downward movement of the lower pressing plate 1072, and the efficient cooperation of the moving units can be realized.

Example 3

As shown in Figure 7, the difference between this embodiment and the above-mentioned embodiment is that the number of needling rollers 1073 is an odd number, and the end of each needling roller 1073 is sleeved with a first rolling wheel 10701, and all the first rolling wheels The wheels 10701 are connected by a first rolling belt. One of the first scroll wheels 10701 is driven by a first scroll wheel motor, a first bevel gear 10702 is sleeved on the output shaft of the first scroll wheel motor, and a second bevel gear is sleeved on one of the screw rods 1075 10703, the mutual transmission between the first bevel gear 10702 and the second bevel gear 10703 is realized through a reversing assembly. The reversing assembly includes a third bevel gear 10704 and a fourth bevel gear 10705, the first bevel gear 10702 meshes with the third bevel gear 10704, the third bevel gear 10704 is connected with the fourth bevel gear 10705 through a shaft, The fourth bevel gear 10705 meshes with the second bevel gear 10703 . Each screw mandrel 1075 is also sleeved with a second rolling wheel 10706, and all the screw mandrels 1075 are connected by the second rolling wheel belt or chain.

The present invention drives one first scroll wheel 10701 to rotate through the first scroll wheel motor, drives other first scroll wheels 10701 to rotate in the same direction, and drives each acupuncture roller 1073 to roll synchronously in the same direction; at the same time, the first scroll wheel motor rotates to drive all cones The gears rotate synchronously to realize the rotation of one of the screw mandrels 1075, and then drive the rotation of other screw mandrels 1075 through the second rolling wheel 10706.

When the number of needling rollers 1073 is an odd number, the present invention adopts a rolling mode in which each needling rollers 1073 move synchronously and in the same direction, and the present invention adopts one motor to realize all the above-mentioned motion actions, which saves equipment cost, reduces The effect of energy consumption.

Example 4

As shown in Figure 10, the difference between this embodiment and the above-mentioned embodiment is that the number of needle punching rollers 1073 is an even number, and the needle punching rollers 1073 at the starting position to the needle punching rollers 1073 at the end position form a group of two. The ends of each group of needling rollers 1073 are respectively sleeved with a first gear 10707 and a second gear 10708, the first gear 10707 and the second gear 10708 mesh, and the first gear teeth are driven by a first gear motor. A first bevel gear 10702 is sleeved on the output shaft of the first gear motor, and a second bevel gear 10703 is sleeved on one of the screw rods 1075. Between the first bevel gear 10702 and the second bevel gear 10703 The mutual transmission is realized through the reversing components. The reversing assembly includes a third bevel gear 10704 and a fourth bevel gear 10705, the first bevel gear 10702 meshes with the third bevel gear 10704, the third bevel gear 10704 is connected with the fourth bevel gear 10705 through a shaft, The fourth bevel gear 10705 meshes with the second bevel gear 10703 . Each screw mandrel 1075 is also sleeved with a second rolling wheel 10706, and all the screw mandrels 1075 are connected through the second rolling wheel belt.

The present invention drives one of the first gears 10707 to rotate through the first gear motor, and the rotation of the first gear 10707 drives the rotation of the second gear 10708 meshed with it to realize a set of needles corresponding to the first gear 10707 and the second gear 10708. The licker-in rollers 1073 move toward each other or move backwards; at the same time, the first gear 10707 rotates, and the rotation of other first gears 10707 is realized through the pulley 10709, and then the rotation of other second gears 10708 is realized.

When the upper pressing plate 1071 and the lower pressing plate 1072 of the present invention move towards each other, the two needling rollers 1073 of the same group move towards each other, and the particles in the gap between the two needling rollers 1073 are pressed; when the upper pressing plate of the present invention When the pressing plate 1071 and the lower pressing plate 1072 move in the opposite direction, the two needling rollers 1073 in the same group move in the opposite direction.

When the number of needling rollers 1073 is an even number, the present invention adopts a rolling method in which two pairs of needling rollers 1073 move synchronously and in opposite directions to complete pulverization.

Example 5

As shown in FIG. 2 , the difference between this embodiment and the above-mentioned embodiments is that a guide plate assembly is provided at the bottom of the grinding chamber, and the guide plate assembly includes a first inclined plate 10078 and a second inclined plate 10079 . The first inclined plate 10078 and the second inclined plate 10079 are respectively located at the two ends of the bottom of the crushing chamber and are inclined towards each other. Wherein, the extension line of the central axis from top to bottom of the second inclined plate 10079 intersects the central axis of the first inclined plate 10078 from top to bottom.

Since the particles falling from the bottom of the crushing chamber are scattered, it is inconvenient to concentrate the particles and unify the direction of falling materials. The present invention includes the first inclined plate 10078 and the second inclined plate 10079 by setting. The first inclined plate 10078 and the second inclined plate 10079 are respectively located at the two ends of the bottom of the crushing chamber and are inclined towards each other, and the second inclined plate 10079 is from the top And the extension line of the central axis in the downward direction intersects the central axis of the first inclined plate 10078 from top to bottom. In this way, the particles falling from the bottom of the crushing chamber partly fall directly on the first inclined plate 10078, partly fall on the first inclined plate 10078 under the barrier effect of the second inclined plate 10079, and finally pass through the first inclined plate 10078. Falling, realizes the effect of centralized feeding and consistent feeding direction.

Example 6

The difference between this embodiment and the above-mentioned embodiments is that the wind screening device 108 includes a fan 1081 , a bottom plate 1082 , and an inclined plate 1083 for cutting. Along the length direction of the bottom plate 1082, there are blanking channels at intervals, and the bottom of each blanking channel is provided with a blanking inclined plate 1083 . The fan 1081 is used to blow the powder falling from the feeding port into the corresponding feeding channel according to the gravity. The wind screening device 108 of the present invention can also be other prior art. The present invention sieves the particles below 5mm through the blowing of the fan 1081, and the blowing of the fan 1081 generates a horizontal thrust on the particles, and the particles fall in a parabolic shape. The lesser dust and impurities have a longer parabolic length of falling, and fall in the feeding channel far away from the blower fan 1081, and slide down through the guidance of the feeding inclined plate 1083.

As shown in FIG. 9 , in some embodiments, the side surfaces of the upper pressing plate 1071 and the lower pressing plate 1072 are in sealing contact with the inner sidewall of the crushing chamber through a rubber layer. A feed channel with a serpentine structure is installed on the feed port. The upper opening of the feed channel is wider and the lower opening is narrower. The setting of the feeding channel of the serpentine structure of the present invention can meet the requirement that the particles fall into the space between the upper pressing plate 1071 and the lower pressing plate 1072 from top to bottom under the action of gravity, and when the upper pressing plate 1071 and the lower pressing plate 1072 move towards each other At this time, the existence of the feed channel of the serpentine structure increases the difficulty for the particles to be extruded from the feed channel from bottom to top, and prevents the particles from being extruded from the feed port.

In some embodiments, the outer wall of the outer stopper layer 10522 has a sawtooth structure, and the outer wall of the outer stopper layer 10522 meshes with the teeth of the driving gear. The present invention drives the block to rotate through the rotation of the driving gear. All the motors of the present invention are preferably servo motors, and the cylinders are preferably servo cylinders or replaced by electric cylinders, and each servo unit is driven by a PLC control center to work.

It should be noted that in this article, if there are relational terms such as first and second, etc., they are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that these entities or operations Any such actual relationship or order exists between. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be described in the foregoing embodiments Modifications are made to the recorded technical solutions, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A finely crushed wind-powered screening mechanism for waste concrete recycled aggregate, characterized in that it includes a pre-crushed disc assembly, a centrifugal crushing and feeding device, a licker-in crushing device, and a wind-powered screening device; The pre-crushing disc assembly includes a guide table and a stopper; the guide table is in the shape of a circular platform with a narrower upper end and a wider lower end, and the periphery of the stopper is on the side of the guide table and the bottom of the stopper is in contact with the The side of the guide table is connected or contacted by rotation, which includes an inner block layer and an outer block layer, and a blanking gap that penetrates up and down is provided on the inner layer block layer; at the bottom of the blanking gap A material guide tube is connected, and the discharge end of the material guide tube is inclined downward until the central axis intersects with the central axis of the guide table; the inner surface of the inner block layer is a rolling socket wall; the The guide table is driven to rotate by the guide table motor; the rotation direction of the guide table is opposite to that of the stopper; The centrifugal crushing and feeding device is located below the material guide pipe, and the centrifugal crushing and feeding device includes a drum and a rotating assembly; the drum has upper and lower openings, and the bottom of the feed pipe is located on the top of the drum. Above the opening, the rotating assembly is oblique and limited in the inner cavity of the drum in a rotationally fit manner; the rotating assembly includes a first rotating member and a second rotating member, and one end of the first rotating member It is connected with a section of the inner wall of the inner cavity of the drum, and its other end is inclined downward; one end of the second rotating member is hinged with the other end of the first rotating member, and the other end of the second rotating member It can be inclined downward to contact with another section of the inner wall of the inner cavity of the drum; a torsion spring is installed at the hinge of the second rotating member and the first rotating member, and the other part of the second rotating member The bottom of one end is sucked or engaged with the other inner wall of the inner cavity of the drum; The licker-in crushing device includes a crushing chamber, and the crushing chamber is connected up and down; the crushing chamber is provided with an upper pressing plate, a lower pressing plate, an acupuncture roller, and a blanking plate, and there are a plurality of acupuncture rollers. A row is arranged horizontally with each other, and the upper pressing plate and the lower pressing plate are respectively located above and below the acupuncture roller; the upper pressing plate and the lower pressing plate can move toward each other or move backwards in the vertical direction and the upper pressing plate, the lower pressing plate The sides of the lower pressing plate are all in sealing contact with the inner side wall of the crushing chamber; a feeding port is opened on the upper pressing plate, and a feeding opening is opened on the lower pressing plate, and the feeding opening passes through the The blanking plate is covered; the downward movement of the lower pressing plate can realize the downward turning of the blanking plate and cause the opening of the blanking port; The wind screening device is used to screen the powder falling from the feeding opening. 2. The finely pulverized wind-powered screening mechanism for waste concrete recycled aggregate according to claim 1, characterized in that a screen is installed at the blanking gap; the bottom edge of the side of the guide platform is bent upward to form a The bottom edge of the inner surface of the inner block layer is an inverted S-shaped structure, and the inverted S-shaped structure is in contact with the U-shaped flanged structure. 3. The finely crushed wind-powered screening mechanism for waste concrete recycled aggregate according to claim 1, characterized in that, the inner wall of the drum is provided with acupuncture or the inner wall of the drum is a concave-convex surface, and the rotating assembly The upper surface of the upper surface is also provided with acupuncture or the upper surface of the rotating component is a concave-convex surface. 4. The waste concrete regenerated aggregate according to claim 1 is characterized in that, the bottom surface of the upper pressing plate and the top surface of the lower pressing plate are concave-convex surfaces; A plurality of screw rods are arranged directly, and the thread directions of the upper section of each screw rod and the lower section of the screw rod are opposite. The upper pressing plate is connected to the upper section of the screw rod through the first screw sleeve, and the lower pressing plate is sleeved by the second screw sleeve. Connected to the lower section of the screw rod; one end of the blanking plate is hinged to one side of the blanking port, and a second torsion spring is installed at the hinge of the blanking plate and the blanking port; the other part of the blanking plate One end is a free end, and the free end of the blanking plate can be engaged or sucked on the other side of the blanking port; a sliding sleeve is provided on the lower section of the screw rod for sliding fit, and the sliding sleeve It is connected with the bottom of the lower pressing plate through a first elastic member, and the free end of the blanking plate is connected with the sliding sleeve through a second elastic member. 5. The fine crushing wind-powered screening mechanism for waste concrete recycled aggregate according to claim 4, characterized in that, the number of the acupuncture rollers is an odd number, and the end of each acupuncture roller is sleeved with a first Rolling wheels, all the first rolling wheels are connected by the first rolling belt; one of the first rolling wheels is driven by the first rolling wheel motor, and the output shaft of the first rolling wheel motor is sleeved with a first tapered gear, a second bevel gear is sleeved on one of the screw rods, and mutual transmission is realized between the first bevel gear and the second bevel gear through a reversing assembly; the reversing assembly includes a third bevel gear, the fourth bevel gear, the first bevel gear meshes with the third bevel gear, the third bevel gear is connected with the fourth bevel gear through a shaft, and the fourth bevel gear is connected with the fourth bevel gear The second bevel gear is meshed; each screw mandrel is also sleeved with a second rolling wheel, and all the screw mandrels are connected through the second rolling wheel belt. 6. The waste concrete regenerated aggregate according to claim 4 is characterized in that the number of the acupuncture rollers is an even number, and the acupuncture rollers from the initial position to the final position are The rollers are in groups of two and two, and the ends of each group of acupuncture rollers are respectively sleeved with a first gear and a second gear, the first gear and the second gear mesh, and the first gear teeth are driven by the first gear motor Drive; a first bevel gear is sleeved on the output shaft of the first gear motor, a second bevel gear is sleeved on one of the screw rods, the first bevel gear and the second bevel The mutual transmission between bevel gears is realized through a reversing assembly; the reversing assembly includes a third bevel gear and a fourth bevel gear, the first bevel gear meshes with the third bevel gear, and the third bevel gear The bevel gear is connected to the fourth bevel gear through a shaft, and the fourth bevel gear meshes with the second bevel gear; each screw rod is also sleeved with a second rolling wheel, and all the screw rods pass through the second rolling wheel. Wheel belt connection. 7. The finely crushed wind-powered screening mechanism for waste concrete recycled aggregate according to claim 1, wherein a guide plate assembly is provided at the bottom of the crushing chamber, and the guide plate assembly includes a first inclined plate, a second Inclined plate; the first inclined plate and the second inclined plate are respectively located at the two ends of the bottom of the pulverizing chamber and inclined toward each other; wherein, the extension line of the central axis of the second inclined plate from top to bottom is the same as the The central axes of the first inclined plates intersect from top to bottom. 8. The finely crushed wind-powered screening mechanism for waste concrete recycled aggregate according to claim 1, wherein the wind-powered screening device includes a blower fan, a base plate, and a blanking inclined plate; There is a feeding channel, and the bottom of each feeding channel is provided with a feeding inclined plate; the fan is used to blow the powder falling from the feeding port into the corresponding feeding port according to the gravity. in the slot. 9. The waste concrete recycled aggregate according to claim 1 is characterized in that the side surfaces of the upper pressing plate and the lower pressing plate are in sealing contact with the inner sidewall of the crushing chamber through a rubber layer; A feed channel with a serpentine structure is installed on the feed port; the feed channel has a wider opening at the upper end and a narrower opening at the lower end. 10. A fine crushing mechanism for waste concrete recycled aggregate, characterized in that it includes a pre-crushing disc assembly, a centrifugal crushing and feeding device, and a licker-in crushing device; The pre-crushing disc assembly includes a guide table and a stopper; the guide table is in the shape of a circular platform with a narrower upper end and a wider lower end, and the periphery of the stopper is on the side of the guide table and the bottom of the stopper is in contact with the The side of the guide table is connected or contacted by rotation, which includes an inner block layer and an outer block layer, and a blanking gap that penetrates up and down is provided on the inner layer block layer; at the bottom of the blanking gap A material guide tube is connected, and the discharge end of the material guide tube is inclined downward until the central axis intersects with the central axis of the guide table; the inner surface of the inner block layer is a rolling socket wall; the The guide table is driven to rotate by the guide table motor; the rotation direction of the guide table is opposite to that of the stopper; The centrifugal crushing and feeding device is located below the material guide pipe, and the centrifugal crushing and feeding device includes a drum and a rotating assembly; the drum has upper and lower openings, and the bottom of the feed pipe is located on the top of the drum. Above the opening, the rotating assembly is oblique and limited in the inner cavity of the drum in a rotationally fit manner; the rotating assembly includes a first rotating member and a second rotating member, and one end of the first rotating member It is connected with a section of the inner wall of the inner cavity of the drum, and its other end is inclined downward; one end of the second rotating member is hinged with the other end of the first rotating member, and the other end of the second rotating member It can be inclined downward to contact with another section of the inner wall of the inner cavity of the drum; a torsion spring is installed at the hinge of the second rotating member and the first rotating member, and the other part of the second rotating member The bottom of one end is sucked or engaged with the other inner wall of the inner cavity of the drum; The licker-in crushing device includes a crushing chamber, and the crushing chamber is connected up and down; the crushing chamber is provided with an upper pressing plate, a lower pressing plate, an acupuncture roller, and a blanking plate, and there are a plurality of acupuncture rollers. A row is arranged horizontally with each other, and the upper pressing plate and the lower pressing plate are respectively located above and below the acupuncture roller; the upper pressing plate and the lower pressing plate can move toward each other or move backwards in the vertical direction and the upper pressing plate, the lower pressing plate The sides of the lower pressing plate are all in sealing contact with the inner side wall of the crushing chamber; a feeding port is opened on the upper pressing plate, and a feeding opening is opened on the lower pressing plate, and the feeding opening passes through the The blanking plate is covered; the downward movement of the lower pressing plate can realize the downward turning of the blanking plate and cause the opening of the blanking port.