A batch plant aggregate bin and segregation device to prevent segregation of gradation

Abstract

The application discloses a mixing station aggregate bin and a segregation device for preventing segregation of gradation, the mixing station aggregate bin comprises at least one aggregate cylinder structure, the aggregate cylinder structure comprises a vertical support frame, an upper storage cylinder and a lower rotating cylinder, outer walls of the upper storage cylinder and the lower rotating cylinder are connected to the vertical support frame, the upper storage cylinder and the lower rotating cylinder are located on the same vertical axis, the upper storage cylinder is in relative rotation contact with the lower rotating cylinder between a lower port of the upper storage cylinder and an upper port of the lower rotating cylinder, a feeding port is arranged at a top end of the upper storage cylinder, the feeding port is a non-central symmetry shape, a stirring mechanism is arranged in the upper storage cylinder, and rotating driving mechanisms are respectively arranged on outer walls of the lower rotating cylinder. The mixing station aggregate bin can solve the problems that the aggregate is stirred and vibrated during storage and discharging, thereby preventing segregation and arching and achieving a good segregation prevention effect, and reducing the influence on the quality of the aggregate during storage and discharging.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of concrete material mixing station, and particularly relates to a mixing station aggregate bin and segregation device for preventing segregation. BACKGROUND

[0002] The asphalt pavement has been rapidly developed due to its small noise, fast traffic, easy maintenance and other advantages. In fact, the coarse and fine asphalt mixture and the graded gravel mixture are prone to segregation during the production, storage, transportation, loading and unloading, paving and rolling processes due to improper operation. Generally, the mixture in the coarse aggregate concentrated area has a large void ratio, a low asphalt content, a large structural depth and a strong water permeability, and is prone to water damage and diseases such as looseness, peeling, potholes and cracks. The mixture in the fine aggregate concentrated area has a small void ratio and a high asphalt content, and is prone to rutting and bumping diseases. Research shows that the segregation of the mixture will increase the original cost of the asphalt pavement and seriously affect the service life of the asphalt pavement. In summary, the segregation of the aggregate, as the main component of the asphalt mixture, is caused by many reasons, including the mixture itself, the equipment structure and the construction technology. The storage modes of the mixing station mainly include the shed storage and the bin storage. When the shed storage is used, the material pile is sensitive to the large particle aggregate, and the coarse particles are prone to roll to the outside of the material pile under the action of gravity and friction to cause segregation. When the aggregate bin storage is used, the segregation problem caused by the aggregate storage can be better avoided. However, the funnel flow is easily formed during the unloading of the aggregate bin, and the flow zone, the stagnation zone and the wall sticking zone are easily formed in the upper, middle and lower parts of the inner wall of the aggregate bin, as shown in FIG. 1, thereby causing the arching of the discharge port and the segregation of the discharged material. Figure 1 Therefore, it is necessary to develop an aggregate bin of the mixing station for preventing segregation. SUMMARY

[0003] The present application aims to provide an aggregate bin of the mixing station for preventing segregation and a segregation device. The aggregate bin of the mixing station can agitate the aggregate during the storage and unloading processes, thereby preventing segregation and arching and achieving a good segregation prevention effect and reducing the influence on the quality of the aggregate during the storage and unloading processes. In order to achieve the above-mentioned purpose, the present application adopts the following technical effects:

[0004] According to one aspect of the present application, there is provided a device for preventing gradation segregation, which comprises at least one cylinder structure for preventing segregation of aggregate, the cylinder structure being vertically fixed to a vertical support frame, the cylinder structure comprising a vertical support frame, an upper storage cylinder and a lower rotating cylinder, the outer wall of the upper storage cylinder and the lower rotating cylinder being connected to the vertical support frame, the upper storage cylinder and the lower rotating cylinder being located on the same vertical axis, the lower end of the upper storage cylinder being in relative rotating contact with the upper end of the lower rotating cylinder, a feeding port being provided at the top end of the upper storage cylinder, a stirring mechanism being provided in the upper storage cylinder, and a rotating driving mechanism being provided on the outer wall of the lower rotating cylinder.

[0005] Preferably, the lower rotating cylinder comprises a cylindrical body and an inverted conical cone, the rotating driving mechanism comprises a driving motor and a driving gear, the upper end of the cylindrical body is in gap rotating contact with the lower end of the upper storage cylinder, the lower end of the cylindrical body is integrally connected with the large end inlet of the inverted conical cone, the upper end of the stirring mechanism is fixed to the top end of the upper storage cylinder, the lower end of the stirring mechanism extends downward along the central axis of the upper storage cylinder to approach the small end inlet of the inverted conical cone, a gear ring is provided on the lower end of the outer wall of the cylindrical body, the gear ring is in meshing engagement with the driving gear provided on the output shaft of the driving motor, one or more upper support rings of different heights are provided on the outer wall of the inverted conical cone, a lower support ring fixed to the vertical support frame is provided below each corresponding upper support ring, there is a gap between the inner ring of the lower support ring and the outer wall of the inverted conical cone, the upper support ring and the lower support ring are in rolling contact.

[0006] Preferably, a rolling contact structure is provided between the upper support ring and the lower support ring, the rolling contact structure comprises an annular rolling support frame fixed to the outer wall of the inverted conical cone and a rolling device provided in the annular rolling support frame in an up-down penetrating manner, the top end of the rolling device is in rolling contact with the lower side of the annular surface of the upper support ring, and the lower end of the rolling device is in rolling contact with the upper side of the annular surface of the lower support ring.

[0007] Preferably, an annular positioning guide groove is provided on the lower surface of the upper support ring and close to the outer wall of the inverted conical cone, a positioning ring is provided on the outer wall of the inverted conical cone and on the upper side of the inner ring of the annular rolling support frame, a positioning protruding block protruding upward and matched with the annular positioning guide groove is provided on the outer ring of the positioning ring, and the positioning protruding block of the positioning ring extends into the annular positioning guide groove.

[0008] Further preferably, the above-mentioned scheme is provided with a buffer support spring on the outer side of the annular rolling support frame and on the upper side of the outer ring of the lower support ring, the lower end of the buffer support spring is fixed to the lower support ring, a ball is arranged on the top end of the buffer support spring, and an annular buffer support groove is arranged on the lower side of the outer ring of the upper support ring and above the ball to accommodate the ball.

[0009] Further preferably, the above-mentioned scheme is provided with an upper annular support sheet on the lower side of the upper support ring to support the top end of the rolling device and a lower annular support sheet on the upper side of the lower support ring to support the lower end of the rolling device.

[0010] Further preferably, the above-mentioned scheme is provided with an annular groove on the outer side wall of the lower end of the upper storage cylinder, a sealing ring is connected to the upper end of the cylinder body and matches the annular groove, a limiting bent part is arranged on the upper end of the sealing ring and bends inwardly to match the inside of the annular groove, the limiting bent part is in clearance fit with the inside of the annular groove, and a sealing medium is filled in the annular groove and can move while immersing the edge of the limiting bent part.

[0011] Further preferably, the above-mentioned scheme is provided with a flexible suction member on the edge of the annular groove on the side away from the outer wall of the upper storage cylinder to absorb the sealing medium, wherein the sealing medium is water, aggregate particles or aggregate powder, and the flexible suction member is in contact with the inner side wall of the limiting bent part of the sealing ring when it protrudes upward along the edge of the annular groove and outward to the edge.

[0012] Further preferably, the above-mentioned scheme is provided with a stirring mechanism including a stirring motor and a stirring shaft, the upper end of the stirring shaft passes out of the top end of the upper storage cylinder vertically upward and is connected to the stirring motor, the lower end of the stirring shaft is connected to the small end outlet of the inverted conical cylinder, a downwardly inclined stirring rod is arranged on the stirring shaft in the upper storage cylinder, and a discharge screw is arranged on the lower end of the stirring shaft and is close to the small end outlet of the inverted conical cylinder.

[0013] According to another aspect of the present application, the present application provides a mixing station aggregate bin for preventing gradation segregation, which comprises at least one aggregate storage mechanism, the aggregate storage mechanism comprises a segregation device vertically fixed on a vertical support frame, the segregation device comprises an upper storage cylinder and a lower rotating cylinder, the outer wall of the upper storage cylinder and the lower rotating cylinder is connected to the vertical support frame, the upper storage cylinder and the lower rotating cylinder are located on the same vertical axis, the lower end of the upper storage cylinder is in relative rotation contact with the upper end of the lower rotating cylinder, a feeding port is arranged on the top end of the upper storage cylinder, a stirring mechanism is arranged in the upper storage cylinder, a rotating driving mechanism is arranged in the upper end of the outer wall of the lower rotating cylinder, and a vibrating mechanism is arranged in the lower end of the outer wall of the lower rotating cylinder.

[0014] In summary, the present application adopts the technical scheme, and has the following technical effects: the mixing station aggregate bin of the present application can solve the segregation and arching of aggregate in the storage and feeding process; the falling aggregate is scattered and distributed in the aggregate cylinder structure by the stirring mechanism, so that the segregation of aggregate in the falling process is prevented; after the aggregate is stored in the lower rotating cylinder, the lower rotating cylinder drives the internal aggregate to rotate in the centrifugal direction in the rotating process, so that the segregation of aggregate in the lower rotating cylinder is avoided; under the joint action of the vibrating mechanism and the discharge screw, the arching and blocking of aggregate at the outlet of the lower rotating cylinder are prevented, so that the good segregation prevention effect is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structure diagram of the segregation of the existing aggregate bin;

[0016] Figure 2 is a structure diagram of the present application of the device for preventing the segregation of the aggregate;

[0017] Figure 3 is a structure diagram of the rotating cylinder of the present application;

[0018] Figure 4 is a rotating drive structure diagram of the rotating cylinder of the present application;

[0019] Figure 5 is a bottom surface structure diagram of the mounting base body of the present application;

[0020] Figure 6 is a whole diagram of the rolling contact structure of the rotating cylinder of the present application;

[0021] Figure 7 is a sealing diagram of the sealing ring of the rotating cylinder of the present application;

[0022] Figure 8 is a ring groove structure diagram of the upper storage cylinder of the present application;

[0023] Figure 9 is a structure diagram of the stirring rod of the present application;

[0024] Vertical support frame 1, upper storage cylinder 2, lower rotating cylinder 3, feeding port 4, stirring mechanism 5, rotating drive mechanism 6, vibration mechanism 7, annular groove 20, flexible suction member 21, communication pipe 22, cylindrical body 30, inverted conical cone 31, gear ring 32, upper support ring 33, lower support ring 34, gap 35, rolling contact structure 36, stirring motor 51, stirring shaft 52, stirring rod 53, discharge screw 54, stirring wing 55, reinforcing connecting rod 56, stirring support rod 57, drive motor 60, drive gear 61, vibration motor 70, spring assembly 71, support plate 72, sealing ring 300, limiting bent portion 301, small end outlet 310, upper annular support sheet 330, lower annular support sheet 340, annular rolling support frame 360, rolling device 361, annular positioning guide groove 362, positioning ring 363, positioning protruding block 364, buffer support spring 365, ball 366, annular buffer support groove 367. DETAILED DESCRIPTION

[0025] To make the objects, technical solutions, and advantages of the present application clearer, the following further describes the present application in detail with reference to the drawings and preferred embodiments. However, it should be noted that many details enumerated in the specification are merely intended to make the reader have a thorough understanding of one or more aspects of the present application, and the aspects of the present application can be realized even without these specific details.

[0026] Example 1, in combination Figure 2 According to the present application, a device for preventing aggregate segregation includes at least one cylindrical structure for preventing aggregate segregation, which is vertically fixed to a vertical support frame 1. The cylindrical structure includes an upper storage cylinder 2 and a lower rotating cylinder 3. The outer walls of the upper storage cylinder 2 and the lower rotating cylinder 3 are connected to the vertical support frame 1. The upper storage cylinder 2 and the lower rotating cylinder 3 are located on the same vertical axis. The lower end of the upper storage cylinder 2 is in relative rotational contact with the upper end of the lower rotating cylinder 3. A feeding port 4, which is non-centrally symmetric, is provided at the top end of the upper storage cylinder 2. A stirring mechanism 5 is provided in the upper storage cylinder 2. Rotational drive mechanisms 6 and vibration mechanisms 7 are provided on the outer wall of the lower rotating cylinder 3. Aggregate is fed into the upper storage cylinder 2 from the feeding port 4 and falls into the lower rotating cylinder 3, and then gradually piles up in the lower rotating cylinder 3 and the upper storage cylinder 2. Aggregate is fed into the upper storage cylinder 2 from the feeding port 4, and then falls into the rotating cylinder 3. During the falling process, the rotating cylinder 3 rotates circumferentially and prevents and avoids segregation of the aggregate through vibration.

[0027] In combination Figure 2 , Figure 3 , Figure 4The lower rotating cylinder 3 comprises a cylinder body 30 and an inverted conical cylinder 31, the rotating driving mechanism 6 comprises a driving motor 60 and a driving gear 61, the upper end of the cylinder body 30 is arranged in a gap rotating mode with the lower end of the upper storage cylinder 2, the lower end of the cylinder body 30 is integrally connected with the large end entrance of the inverted conical cylinder 31, the upper end of the stirring mechanism 5 is fixed to the top end of the upper storage cylinder 2, the lower end of the stirring mechanism 5 extends along the central axis of the upper storage cylinder 2 to approach the small end entrance of the inverted conical cylinder 31, a gear ring 32 is arranged on the lower end outer wall of the cylinder body 30, the gear ring 32 is engaged with the driving gear 61 arranged on the output shaft of the driving motor 60, one or more upper support rings 33 with different heights are arranged on the outer wall of the inverted conical cylinder 31, a lower support ring 34 fixed to the vertical support frame 1 is arranged below each corresponding upper support ring 33, the inner ring of the lower support ring 34 and the outer wall of the inverted conical cylinder 31 have a gap 35, and the upper support ring 33 and the lower support ring 34 are in rolling contact; the driving motor 60 drives the gear ring 32 on the cylinder body 30 through the driving gear 61, so that the gear ring 32 drives the entire lower rotating cylinder 3 to rotate, the lower support ring 34 is arranged in a gap mode with the outer wall of the lower rotating cylinder 3, and the lower support ring 34 supports the lower rotating cylinder 3 through the upper support ring 33, so that the lower rotating cylinder 3 rotates on the lower support ring, thereby avoiding segregation of the aggregate in the lower rotating cylinder 3, and achieving a good anti-segregation effect.

[0028] In the embodiment of the present application, in combination with Figure 3 , Figure 4 , Figure 5 and Figure 6 , the rolling contact structure 36 is arranged between the upper support ring 33 and the lower support ring 34, the rolling contact structure 36 comprises an annular rolling support frame 360 fixed to the outer wall of the inverted conical cylinder 31 and a rolling device 361 arranged in an up-down penetrating mode on the annular rolling support frame 360, the top end outer wall of the rolling device 361 is in rolling contact with the lower side ring surface of the upper support ring 33, the lower end outer wall of the rolling device 361 is in rolling contact with the upper side ring surface of the lower support ring 34, and the rolling device 361 is a ball or a roller; the top end of the rolling device 361 is in contact with the lower ring surface of the upper support ring 33, the bottom end of the rolling device 361 is in contact with the upper ring surface of the lower support ring 34, the outer wall of the lower rotating cylinder 3 is supported on the lower support ring 34 through the annular rolling support frame 360 and the rolling device 361, so that the lower rotating cylinder 3 drives the rotating cylinder 3 to rotate when the lower rotating cylinder 3 rolls on the lower support ring 34 through the rolling device 361.

[0029] In the embodiment of the present application, in combination with Figure 4 , Figure 5 and Figure 6The annular positioning guide groove 362 is arranged on the lower surface of the upper supporting ring 33 and close to the outer wall of the inverted conical cylinder 31. The positioning ring 363 is arranged on the outer wall of the inverted conical cylinder 31 and on the inner ring of the annular rolling supporting frame 360. The positioning protruding block 364 is arranged on the outer ring of the positioning ring 361 and protrudes upward and cooperates with the annular positioning guide groove 362. The positioning protruding block 364 of the positioning ring 361 extends into the annular positioning guide groove 362. The lower rotating cylinder 3 is supported on the lower supporting ring 34 through the rolling device 361 (ball) on the annular rolling supporting frame 360. In order to prevent the lower rotating cylinder 3 from being dislocated during rotation, the positioning protruding block 364 on the annular rolling supporting frame 360 extends into the annular positioning guide groove 362 on the lower surface of the upper supporting ring 33. During rotation of the lower rotating cylinder 3, the positioning protruding block 364 on the annular rolling supporting frame 360 is always guided to rotate along the annular positioning guide groove 362. The positioning protruding block 364 can be arranged as a roller or a ball which protrudes upward, thereby improving the stability of the lower rotating cylinder 3 during rotation.

[0030] In the embodiment of the present application, in combination with Figure 4 , Figure 5 and Figure 6 , the buffer supporting spring 365 is arranged on the outer side of the annular rolling supporting frame 360 and on the outer ring of the lower supporting ring 34. The lower end of the buffer supporting spring 365 is fixed to the lower supporting ring 34. The ball 366 is arranged on the top end of the buffer supporting spring 365. The annular buffer supporting groove 367 is arranged on the outer ring of the upper supporting ring 33 and above the ball 366. The upper supporting ring 33 fixed on the outer wall of the lower rotating cylinder 3 is supported on the lower supporting ring 34 through the buffer supporting spring 365. When the lower rotating cylinder 3 is empty and does not contain aggregate, the rotating cylinder 3 is slightly lifted under the elastic supporting action of the buffer supporting spring 365, so that the rolling device 361 (ball) is separated from the upper supporting ring 33. The whole lower rotating cylinder 3 is supported on the vertical supporting frame 1 through the buffer supporting spring 365 and the lower supporting ring 34. When the aggregate falls into the rotating cylinder 3 and is loaded, the gravity of the lower rotating cylinder 3 increases and falls by a small height and the ball 366 presses the buffer supporting spring 365, so that the rotating cylinder 3 is buffered during falling. After the rotating cylinder 3 falls, it is supported on the rolling device 361 (ball) through the upper supporting ring 33, so that the rotating cylinder 3 can roll and rotate. At this time, the driving motor 60 can be started to drive the rotating cylinder 3 to rotate. During rotation of the rotating cylinder 3, the ball 366 rotates in the annular buffer supporting groove 367.

[0031] In the embodiment of the present application, in combination with Figure 4 , Figure 5 and Figure 6An upper annular support sheet 330 for supporting the uppermost end of the rolling device 361 is arranged on the lower side surface of the upper support ring 33, and a lower annular support sheet 340 for supporting the lowermost end of the rolling device 361 is arranged on the upper side surface of the lower support ring 34, the upper annular support sheet 330 protrudes downward along the lower side surface of the upper support ring 33, and the lower annular support sheet 340 protrudes upward from the upper side surface of the lower support ring 34, so that the horizontal plane of the upper annular support sheet 330 is not on the same horizontal plane as the lower side surface of the upper support ring 33, and the horizontal plane of the lower annular support sheet 340 is not on the same horizontal plane as the lower side surface of the lower support ring 34, thereby enabling the rolling device 361 (ball) to roll, so as to avoid friction or jamming between the annular rolling support frame 360 and the rolling device 361 (ball) and the upper support ring 33 and the lower support ring 34 during rotation, which causes the rotating drum 3 to be difficult to continue to rotate, thereby prolonging the service life thereof.

[0032] In the embodiment of the present application, the upper support ring 33 and the lower support ring 34 are arranged in the upper storage drum 2 and the lower rotating drum 3, respectively. Figure 7 and Figure 8 An annular groove 20 is arranged on the outer wall of the lower end of the upper storage drum 2, the inner wall of the annular groove 20 on the side away from the outer wall of the upper storage drum 2 gradually decreases to the bottom of the groove in a stepped manner, the upper end of the cylindrical body 30 is connected with a sealing ring 300 matched with the annular groove 20, a limiting bent portion 301 bent inward and matched with the annular groove 20 is arranged on the upper end of the sealing ring 300, the limiting bent portion 301 is matched with the annular groove 20 in a gap manner, and sealing medium which can move and is immersed in the edge of the limiting bent portion 301 is filled in the annular groove 20, wherein the sealing ring 300 is formed by a plurality of arc sealing strips, so as to facilitate the installation of the sealing ring 300 between the annular groove 20 of the upper storage drum 2 and the upper end of the cylindrical body 30. Since there is a gap between the upper storage drum 2 and the lower rotating drum 3, the aggregate in the storage and discharging process will contact with the external air, thereby affecting the quality of the aggregate. Therefore, the limiting bent portion 301 is matched with the annular groove 20, aggregate particles and aggregate powder are filled in the annular groove 20, the aggregate particles or the aggregate powder can be sandstone powder or sandstone particles, the height of the aggregate particles and the aggregate powder is higher than the edge of the limiting bent portion 301, the edge of the limiting bent portion 301 is immersed in the aggregate particles, the aggregate powder, the sandstone powder or the sandstone particles placed in the annular groove 20, and the sealing ring 300 connected with the upper end of the cylindrical body 30 can push away the sealing medium during the rotation of the entire rotating drum 3, so that the sealing medium is turned in the annular groove 20 without hindering the rotation of the sealing ring 300 of the cylindrical body 30, and the sealing ring 300 also enables the sealing medium to move in the annular groove during the rotation, thereby achieving the sealing effect and preventing the external air from entering the rotating drum 3.

[0033] In the embodiment of the present application, the upper support ring 33 and the lower support ring 34 are arranged in the upper storage drum 2 and the lower rotating drum 3, respectively. Figure 7 andFigure 8 A flexible suction member 21 for absorbing the sealing medium is fixedly attached to the edge of the slot of the annular groove 20 on the side away from the outer wall of the upper storage cylinder 2. When the flexible suction member 21 protrudes upward along the slot of the annular groove 20 and outward to the edge, it is in contact with the inner side wall of the limiting bent portion 301 of the sealing ring 300. The flexible suction member 21 is sponge, cotton cloth, gauze, etc. The flexible suction member 21 does not hinder the rotation of the sealing ring 300. The flexible suction member 21 (sponge, cotton cloth, gauze, etc.) absorbs the dust generated by the powder particles in the annular groove 20 during the rotation of the rotating cylinder 3, and at the same time, it can block the filling medium in the annular groove 20 from being brought into the rotating cylinder 3.

[0034] In the embodiments of the present application, in combination with Figure 7 and Figure 8 , the sealing medium is water, and the inner wall of the annular groove 20 on the side away from the outer wall of the upper storage cylinder 2 is stepped and gradually lowered to the bottom of the groove. The height of the water contained in the annular groove 20 submerges the edge of the limiting bent portion 301, so that the edge of the limiting bent portion 301 is immersed in the water in the annular groove 20, thereby sealing the upper port of the cylindrical body 30 of the lower rotating cylinder 3. Since there is a gap between the limiting bent portion 301 and the annular groove 20, the limiting bent portion 301 does not contact or collide when rotating along the annular groove 20 during the rotation of the lower rotating cylinder 3. Since the annular groove 20 has a certain depth, the water in the annular groove 20 does not leak out into the lower rotating cylinder 3 during the flow. At the same time, the inner wall of the annular groove 20 on the side of the sealing ring 300 is stepped and gradually lowered to the bottom of the groove, and the water flow gradually hits the stepped side wall of the annular groove and falls back into the water tank, so that the water does not leak out into the lower rotating cylinder 3 during the flow in the annular groove 20.

[0035] In the embodiments of the present application, in combination with Figure 8 , a communication pipe 22 that extends into the large upper port of the inverted conical cylinder 31 is arranged on the inner side wall inside the annular groove 20 on the side close to the outer wall of the upper storage cylinder 2. The communication pipe 22 is used to discharge gas to the inverted conical cylinder 31 to reduce the gas pressure in the cylinder during feeding. Or it is used as a high-pressure gas discharge or blowing pipe to send high-pressure gas into the cylindrical body 30 and the inverted conical cylinder 31. After the discharge of the material outside the cylinder is completed, high-pressure gas can be sent into the cylindrical body 30 and the inverted conical cylinder 31 through the communication pipe 22 to blow off the collected material adhering to the inner wall of the upper rotating cylinder 3.

[0036] In the embodiments of the present application, in combination with Figure 2 and Figure 4According to the application, a device for preventing gradation segregation comprises at least one cylinder structure for preventing aggregate segregation, which is vertically fixed on a vertical support frame 1. The cylinder structure comprises an upper storage cylinder 2 and a lower rotating cylinder 3, the outer walls of which are connected to the vertical support frame 1. The upper storage cylinder 2 and the lower rotating cylinder 3 are located on the same vertical axis. The lower end of the upper storage cylinder 2 is in relative rotating contact with the upper end of the lower rotating cylinder 3. An inlet 4 is arranged at the top end of the upper storage cylinder 2, which is non-centrally symmetric. A stirring mechanism 5 is arranged in the upper storage cylinder 2. A rotating drive mechanism 6 is arranged on the outer wall of the lower rotating cylinder 3 to drive the rotation of the lower rotating cylinder 3. The drive mechanism 6 has the same structure as in the embodiment. The stirring mechanism 5 comprises a stirring motor 51 and a stirring shaft 52. The upper end of the stirring shaft 52 is connected to the stirring motor 51 and vertically extends out of the top end of the upper storage cylinder 2. The lower end of the stirring shaft 52 is connected to a small end outlet 310 of a reverse conical cylinder 31. A downwardly inclined stirring paddle 53 is arranged on the stirring shaft 52 in the upper storage cylinder 2. The aggregate in the aggregate cylinder structure is stirred by starting the stirring motor 51 to drive the rotation of the stirring shaft 52, so as to prevent the segregation of the aggregate in the upper storage cylinder 2.

[0037] In the embodiment of the application, the device for preventing gradation segregation is combined with Figure 2 、 Figure 4 and Figure 9, the lower end of the stirring shaft 52 is provided with a discharge screw 54 close to the small end outlet 310 of the inverted conical cylinder 31, a plurality of stirring wings 55 are provided on the stirring rod 53 vertically, a reinforcing connecting rod 56 is connected between adjacent stirring wings 55, and a stirring branch rod 57 parallel to the stirring wing 55 is connected to the reinforcing connecting rod 56; during the falling of the aggregate, when the aggregate impacts the stirring wing 55, the reinforcing connecting rod 56 and the stirring branch rod 57, the stirring wing 54 rotates along the stirring rod 53, so that the aggregate is further dispersed and distributed in the aggregate cylinder; when the aggregate in the stirring aggregate cylinder structure is stirred by the stirring motor 51 driving the stirring shaft 52 to rotate, the stirring shaft 52 drives the stirring rod 53 and the stirring wing 55 to rotate with the aggregate, which is convenient for stirring and conveying the mixed aggregate, thereby further pre-stirring to prevent the segregation of the aggregate in the upper storage cylinder 2; the discharge screw 54 will not cause the aggregate to segregate in the inverted conical cylinder 31, and will make the aggregate uniform in size. The aggregate cylinder structure of the application can stir the aggregate during storage, so that the aggregate will not segregate when it is stacked, thereby solving the problem that the quality of the aggregate is affected when the aggregate segregates during discharge. The centrifugal force generated by the rotation of the rotating cylinder 3 has a great influence on the aggregate. The stirring mechanism 5 stirs and disperses the aggregate to make it fall uniformly to the lower rotating cylinder 3. The bottom layer of the aggregate is stirred by the discharge screw 54 to re-mix and stir the aggregate, and the aggregate is discharged from the small end outlet 310 of the rotating cylinder 3. The discharge screw 54 rotates and stirs the aggregate, which moves with it, and has a good anti-segregation effect on the bottom aggregate, avoiding arching at the small end outlet 310 of the inverted conical cylinder 31 and preventing the aggregate from blocking the outlet.

[0038] Example 3, according to the application, a device for preventing segregation of graded aggregate, the segregation device comprises at least one cylinder structure for preventing segregation of aggregate, the cylinder structure is vertically fixed on the vertical support frame 1, the cylinder structure comprises an upper storage cylinder 2 and a lower rotating cylinder 3, which is combined with Figure 2 and Figure 4The outer wall of the upper storage cylinder 2 and the lower rotating cylinder 3 is connected to the vertical support frame 1, the upper storage cylinder 2 and the lower rotating cylinder 3 are located on the same vertical axis, the lower port of the upper storage cylinder 2 is in relative rotation contact with the upper port of the lower rotating cylinder 3, the top end of the upper storage cylinder 2 is provided with a feeding port 4 which is a non-central symmetric shape, a stirring mechanism 5 is arranged in the upper storage cylinder 2, a rotating driving mechanism 6 and a vibrating mechanism 7 are arranged on the outer wall of the lower rotating cylinder 3 respectively, the stirring mechanism 6 in the embodiment is the same as that in embodiment 2, and the rotating driving mechanism 6 is the same as that in the embodiment; the rotating driving mechanism 6 is used for driving the rotating cylinder 3 to rotate, the vibrating mechanism 7 is arranged on the outer wall of the lower part of the lower rotating cylinder 3, the vibrating mechanism 7 comprises a vibrating motor 70 and a spring assembly 71, a plurality of spring assemblies 71 are arranged on the outer wall of the lower part of the lower rotating cylinder 3 and are spaced along the outlet direction of the lower rotating cylinder 3, one end of each spring assembly 71 is fixed vertically on the outer wall of the lower rotating cylinder 3, a support plate 72 is integrally arranged on the other end of each spring assembly 71, and the vibrating motor 70 is arranged on the support plate 72; when the vibrating motor 70 vibrates on the support plate 72, due to the elastic force inertia of the spring assembly 71, the vibrating motor 70 generates a vibration stroke on the support plate, and the vibrating motor 70 generates resonance on the support plate 72 in the vibration process, so that the vibration effect of the rotating cylinder 3 is further improved; when the material falls into the rotating cylinder 3 for storage and in the process of outward conveying of the aggregate, arching and aggregate segregation may occur at the small end outlet 310 of the rotating cylinder 3, in order to prevent the arching and segregation phenomenon, the vibrating motor 70 is started to continuously vibrate the rotating cylinder 30, so that the material can be quickly discharged at the small end outlet 310, the arching and segregation phenomenon of the small end outlet 310 of the rotating cylinder 3 is effectively solved, and the quality of the mixed aggregate is ensured.

[0039] Embodiment 4, in combination Figure 2The embodiment of the present application provides a mixing station aggregate bin capable of preventing gradation segregation, which comprises at least one aggregate storage mechanism, the aggregate storage mechanism comprises a segregation device vertically fixed to a vertical support frame 1, the segregation device comprises an upper storage cylinder 2 and a lower rotating cylinder 3, the outer walls of the upper storage cylinder 2 and the lower rotating cylinder 3 are connected to the vertical support frame 1, the upper storage cylinder 2 and the lower rotating cylinder 3 are located on the same vertical axis, the lower port of the upper storage cylinder 2 and the upper port of the lower rotating cylinder 3 are in relative rotation contact, a feeding port 4 is arranged at the top end of the upper storage cylinder 2, a stirring mechanism 5 is arranged in the upper storage cylinder 2, a rotating driving mechanism 6 is arranged in the upper end of the outer wall of the lower rotating cylinder 3, and a vibrating mechanism 7 is arranged in the lower end of the outer wall of the lower rotating cylinder 3, aggregate is sent into the upper storage cylinder 2 from the feeding port 4 and falls into the lower rotating cylinder 3, and then the aggregate is gradually stacked upwards in the lower rotating cylinder 3 and the upper storage cylinder 2, the aggregate is sent into the upper storage cylinder 2 from the feeding port 4, the aggregate falls into the rotating cylinder 3, and the rotating cylinder 3 rotates in a circle and vibrates during the falling process, so that the segregation of the aggregate can be avoided.

[0040] Embodiment 5, in combination with Figure 1 、 Figure 3 and Figure 4 , the method (process) for preventing gradation segregation of the present application is described, if the driving motor 60 of the rotating driving mechanism 6 drives the gap rotation of the inverted conical cylinder 31 of the lower rotating cylinder 3, under the action of the rotating cylinder 3 rotating in a circle and vibrating, the angular velocity ω generated by the aggregate in the rotating cylinder 3 is to avoid arching and segregation, the angular velocity when the gap rotation satisfies:

[0041]

[0042] Wherein, d s is the height of an arbitrary micro-section unit at a depth s in the vertical direction of the wall sticking area, μ is the friction coefficient of the aggregate to the cylinder wall (the aggregate is the aggregate on the entire cross section of the cylinder wall, and the friction force mainly comes from the aggregate on the cylinder wall), P s is the pressure on the unit area of the inner wall of the inverted conical cylinder 31 at the depth s, the unit is: kN / m 3 ; α is the angle between the inner wall of the inverted conical cylinder 31 and the vertical direction; m is the mass of a micro-section aggregate at the depth s, the unit is kg.

[0043] Therefore, the aggregate is subjected to the rotating cylinder 3 circumferential rotation and vibration in the falling process, so that the aggregate generates a large angular velocity in the rotating cylinder 3, reaches the angular velocity ω, so that the inner wall of the cylinder can reduce or avoid the segregation phenomenon; in the present application, in the vertical direction, any micro-section unit at the depth s of the rotating cylinder 3 wall sticking area in the vertical direction is subjected to the gravity G, the vertical pressure of the aggregate acting on the upper part of the micro-section unit is F1, the vertical pressure of the aggregate acting on the lower part of the micro-section unit is F2, if the inner wall of the inverted conical cylinder 31 is α with the vertical direction, the frictional force on the unit area of the wall sticking area cylinder wall is F f , the vertical direction is subjected to the frictional force F f ·cosα, the horizontal direction is subjected to the frictional force F f ·sinα. In addition, since the aggregate is subjected to the rotating cylinder 3 circumferential rotation and vibration in the falling process, the horizontal direction is also subjected to the axial force F c , the calculation formula of each force is as follows:

[0044] G=γAd s , (1);

[0045] In the formula: γ is the gravity density of the aggregate, kN / m 3 ;

[0046] A is the cross-sectional area of the aggregate m 2 ;

[0047] F f =μP s ; (2);

[0048] In the formula: F f is the frictional force of the aggregate on the unit area of the wall, kN / m 3 ;

[0049] μ is the friction coefficient of the aggregate on the wall;

[0050] P s is the pressure on the unit area of the wall at the depth s, kN / m 3 .

[0051]

[0052] In the formula: F c is the horizontal axial force, kN;

[0053] m is the mass of the material at the depth s, kg;

[0054] r is the horizontal cross-sectional radius of the material at the depth s;

[0055] v is the rotating speed, m / s;

[0056] ω is the rotating angular velocity, rad / s.

[0057] Assuming that the aggregate is no arching, segregation phenomenon at the depth s of the wall zone, then in the horizontal, vertical direction listed equations:

[0058]

[0059] Formula (1) (2) (3) are substituted into equation (4) respectively, which can be obtained:

[0060]

[0061] The solution is

[0062] Therefore, the aggregate in the falling process through the device rotating cylinder 3 circumferential rotation and vibration, so that the aggregate in the rotating cylinder 3 generates a large angular velocity, reach formula (6) requirements, thus to a certain extent to avoid arching, segregation phenomenon.

[0063] The above only is the preferred embodiment of the present application, should be pointed out, for the ordinary skilled in the art, without departing from the principles of the present application, can also make a number of improvements and refinements, these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. An apparatus for preventing segregation of a graded material, characterized by: The device comprises at least one cylinder structure for preventing aggregate segregation, which comprises an upper storage cylinder and a lower rotating cylinder, the outer walls of the upper storage cylinder and the lower rotating cylinder are connected to a vertical support frame, the upper storage cylinder and the lower rotating cylinder are located on the same vertical axis, the lower end of the upper storage cylinder is in relative rotation contact with the upper end of the lower rotating cylinder, a feeding port is arranged at the top end of the upper storage cylinder, a stirring mechanism is arranged in the upper storage cylinder, a rotating driving mechanism and a vibrating mechanism are arranged on the outer wall of the lower rotating cylinder; The lower rotating cylinder comprises a cylindrical body and an inverted conical cone, the rotating driving mechanism comprises a driving motor and a driving gear, the upper end of the cylindrical body is arranged in gap rotation with the lower end of the upper storage cylinder, the lower end of the cylindrical body is integrally connected with the large end inlet of the inverted conical cone, the upper end of the stirring mechanism is fixed to the top end of the upper storage cylinder, the lower end of the stirring mechanism extends downward along the central axis of the upper storage cylinder to approach the small end of the inverted conical cone, a gear ring is arranged on the lower end of the cylindrical body, the gear ring is engaged with the driving gear arranged on the output shaft of the driving motor, one or more upper support rings of different heights are arranged on the outer wall of the inverted conical cone, a lower support ring fixed to the vertical support frame is arranged below each corresponding upper support ring, there is a gap between the inner ring of the lower support ring and the outer wall of the inverted conical cone, the upper support ring and the lower support ring are in rolling contact; a rolling contact structure is arranged between the upper support ring and the lower support ring, the rolling contact structure comprises an annular rolling support frame fixed to the outer wall of the inverted conical cone and a rolling device arranged in an upper and lower penetrating manner on the annular rolling support frame, the top end of the rolling device is in rolling contact with the lower side of the upper support ring, the lower end of the rolling device is in rolling contact with the upper side of the lower support ring; An annular positioning guide groove is arranged on the lower surface of the upper support ring and close to the outer wall of the inverted conical cone, a positioning ring is arranged on the outer wall of the inverted conical cone and on the upper side of the inner ring of the annular rolling support frame, a positioning protruding block protruding upward and matched with the annular positioning guide groove is arranged on the outer ring of the positioning ring, the positioning protruding block of the positioning ring extends into the annular positioning guide groove; a buffer support spring is arranged on the outer side of the annular rolling support frame and on the upper side of the outer ring of the lower support ring, the lower end of the buffer support spring is fixed to the lower support ring, a ball is arranged at the top end of the buffer support spring, an annular buffer support groove is arranged on the outer ring of the lower support ring and above the ball to accommodate the ball.

2. The apparatus of claim 1, wherein: An upper annular support piece for supporting the top end of the rolling device is arranged on the lower side of the upper support ring, and a lower annular support piece for supporting the lower end of the rolling device is arranged on the upper side of the lower support ring.

3. The apparatus of claim 1, wherein: An annular groove is arranged on the outer wall of the lower port of the upper storage cylinder, the upper port of the cylinder body is connected with a sealing ring which matches the annular groove, a limiting bent part which bends inward and extends into the annular groove is arranged on the upper port of the sealing ring, the limiting bent part is in clearance fit with the inner part of the annular groove, and a sealing medium which is movable and immerses the edge of the limiting bent part is filled in the annular groove.

4. The apparatus of claim 3, wherein: A flexible absorbing accessory for absorbing the sealing medium is arranged on the edge of the slot of the annular groove which is away from the outer wall of the upper storage cylinder, the sealing medium is water, aggregate particles or aggregate powder, and the flexible absorbing accessory is in contact with the inner wall of the limiting bent part of the sealing ring when it protrudes upward along the slot of the annular groove and extends outward along the edge.

5. The apparatus of claim 1, wherein: The stirring mechanism comprises a stirring motor and a stirring shaft, the upper end of the stirring shaft is connected with the stirring motor and penetrates upward along the top end of the upper storage cylinder, the lower end of the stirring shaft extends downward and approaches the small end outlet of the inverted conical cylinder, a downwardly inclined stirring rod is arranged on the stirring shaft in the upper storage cylinder, and a discharging screw which approaches the small end outlet of the inverted conical cylinder is arranged on the outer wall of the lower end of the stirring shaft.

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