A screening device for construction aggregate

Abstract

The present invention relates to the technical field of construction screening materials, and discloses a screening device for construction aggregates, including an outer support frame and a supporting base frame on both sides of the outer support frame, a screening frame is installed inside the outer support frame, a supporting cone frame is also installed at the axis of the screening frame, a rubber ring is installed at the lower end of the supporting cone frame, the screening frame includes a limit ring, a limit grid and a screening material cavity, a limit ring is installed at the lower end of the outer support frame, the limit grid is arranged in a ring shape on the inner wall of the limit ring, and a conical groove is spaced between every two limit grids, and the conical groove is a screening material cavity. The present invention achieves a screening effect on stones by utilizing the spacing size of the screening material cavity, so that stones of different sizes fall into the screening material cavity with corresponding spacing, and according to the spacing size of the screening material cavity, a first collection cavity, a second collection cavity and a third collection cavity are classified, and the screened stones are collected and processed, thereby realizing the fine screening function of the stones.

Description

Technical Field

[0001] The invention relates to the technical field of construction screening materials, in particular to a screening device for construction aggregates. Background Art

[0002] Construction aggregates (stones), as an important component of cement concrete and asphalt mixtures, are extremely critical construction materials in the construction industry. Their quality and particle size distribution have a crucial impact on the macroscopic performance of construction projects such as houses, roads, and bridges. Aggregates of different particle sizes can meet the needs of different projects. By reasonably matching aggregates of different particle sizes, the skeleton structure of concrete can be optimized and the strength can be improved. Therefore, distinguishing aggregates of different sizes is a key step in achieving project quality optimization, which is of great significance for ensuring project quality and improving construction efficiency.

[0003] Some existing screening equipment has insufficient screening accuracy when processing fine aggregates, and it is difficult to accurately distinguish between small aggregates of different particle sizes. In addition, the surface quality of aggregates has an important impact on the strength of concrete. For example, aggregates with cracks or voids on the surface may reduce the overall strength of concrete and cause it to crack during use. Aggregates with cracks or spots on the surface will reduce the strength of concrete and may cause concrete to crack during use. Summary of the invention

[0004] The present invention provides a screening device for construction aggregates, which has the beneficial effect of differentiated screening and solves the problem that the existing equipment mentioned in the above background technology does not have the function of differentiated screening of aggregate sizes, and the quality of the aggregate surface will also affect the strength of concrete. Aggregates with cracks or spots on the surface will reduce the strength of concrete and may cause the concrete to crack during use.

[0005] The present invention provides the following technical solution: a screening device for construction aggregates, comprising an outer support frame and supporting base frames on both sides of the outer support frame, a screening frame is installed inside the outer support frame, a supporting cone frame is also installed at the axis of the screening frame, and a rubber ring is installed at the lower end of the supporting cone frame;

[0006] The screening frame comprises a limiting ring, a limiting grid and a screening cavity. The limiting ring is installed at the lower end of the outer support frame. The limiting grids are arranged in a ring shape on the inner wall of the limiting ring. A conical groove is provided between every two limiting grids, and the conical groove is the screening cavity.

[0007] One end of the limiting grid is fixed to the inner wall of the limiting ring, and the other end of the limiting grid is fixed to the rubber ring.

[0008] The internal spacing of the screening cavity is in a state of changing from small to large.

[0009] As an optional solution of the screening device for construction aggregates of the present invention, wherein: a screening collection frame is fixedly installed on the lower surface of the screening frame, the screening collection frame includes a first ring, a second ring, a third ring and a fourth ring, and a first ring is fixedly installed on the lower surface of the limiting grid;

[0010] A second ring located on the lower surface of the limiting grid is installed on the outer side of the first ring;

[0011] A third ring located on the lower surface of the limiting grid is installed on the outer side of the second ring;

[0012] A fourth ring located on the lower surface of the limiting grid is installed on the outer side of the third ring.

[0013] As an optional solution of the screening device for construction aggregates of the present invention, wherein: the screening and collecting frame further comprises a first collecting chamber, a second collecting chamber and a third collecting chamber, and the first collecting chamber is provided between the first ring and the second ring;

[0014] A second collecting chamber is provided between the second ring and the third ring;

[0015] A third collecting chamber is provided between the third ring and the fourth ring.

[0016] As an optional solution of the screening device for construction aggregates of the present invention, wherein: the screening frame further comprises a second motor, a turntable and a connecting rod, the second motor is fixedly mounted on the outer side of the outer support frame, and a turntable is rotated at one end of the second motor;

[0017] An upper support ear is arranged on the outer side of the outer support frame, a lower support ear is arranged on the outer side of the limiting ring, a shock absorbing spring is fixedly installed on the lower surface of the upper support ear, and the shock absorbing spring is used to connect the upper support ear and the lower support ear;

[0018] One end of the turntable is rotatably connected to a connecting rod, and the other end of the connecting rod is rotatably connected to the outer side of the limiting ring, and the second motor is used to provide a vibration effect of the limiting ring.

[0019] As an optional solution of the screening device for construction aggregates described in the present invention, wherein: a crushing frame is installed above the outer support frame, and the crushing frame includes a barrel, a limiting inner ring, a centrifugal frame, a fixed cutting strip, a throwing chute and a movable cutting strip, and the inner wall of the barrel is fixedly installed with a limiting inner ring;

[0020] The distance between one side of the movable cutting strip and one end of the fixed cutting strip is 20 mm;

[0021] A driving structure is installed at the upper end of the barrel, and the driving structure includes a supporting spindle and a connecting bearing. The supporting spindle is rotatably installed inside the barrel, and a connecting bearing is installed on the outer side of the upper end of the supporting spindle. The connecting bearing is used to rotatably install the supporting spindle in the barrel, and a centrifugal frame is fixedly installed on the outer side of the supporting spindle;

[0022] The inner wall of the limiting inner ring is arranged with fixed cutting strips, the outer side of the centrifugal frame is annularly arranged with material throwing troughs, and one side of the inner wall of the material throwing trough is provided with a moving cutting strip located in the centrifugal frame.

[0023] As an optional solution of the screening device for construction aggregates of the present invention, two groups of grinding racks are arranged inside the barrel, each group of the grinding racks has two grinding racks, the grinding racks include a supporting bottom plate, a rotating bottom plate, an inclined bottom plate and a drain groove, the inner wall of the barrel is provided with a supporting bottom plate, and one side of the supporting bottom plate is provided with a drain groove;

[0024] A rotating bottom plate is also fixedly mounted on the outer side of the supporting main shaft, and an inclined bottom plate is provided on one side of the rotating bottom plate.

[0025] As an optional solution of the screening device for construction aggregates described in the present invention, wherein: the grinding frame further includes step bars, vertical bars and inclined surfaces, the upper surface of the support base plate is arranged with step bars, the upper surface of the support base plate is also arranged with vertical bars, and the upper surface of the step bars is provided with an inclined surface;

[0026] The inclined surface is used to achieve a tumbling effect of the aggregate;

[0027] The vertical bars are used to slow down the movement of the aggregate.

[0028] As an optional scheme of the screening device for construction aggregates described in the present invention, wherein: the lower surface of the rotating bottom plate is densely arranged with bristle ends, the bristle ends include a fixed bottom shaft, outer iron bristles and inner iron bristles, the lower surface of the rotating bottom plate is provided with a fixed bottom shaft, the lower surface of the fixed bottom shaft is densely arranged with inner iron bristles, and the outer side of the inner iron bristles is arranged in a ring shape with outer iron bristles.

[0029] As an optional scheme of the screening device for construction aggregates described in the present invention, wherein: a support plate is installed at the upper end of the rotating bottom plate, and two adjustment frames are installed at the lower ends of the support plates, and the adjustment frames include a hydraulic pipe, a push rod, a support rod sleeve, a telescopic shaft, a buffer spring and a connecting base, a push rod is symmetrically installed inside the hydraulic pipe, a support rod sleeve is rotatably installed at one end of the hydraulic pipe, a telescopic shaft is installed inside the support rod sleeve, and a buffer spring located in the support rod sleeve is also installed at one end of the telescopic shaft, a connecting base is installed on the upper surface of the rotating bottom plate, and the lower end of the telescopic shaft is used to connect with the connecting base, and the interior of the hydraulic pipe is filled with oil;

[0030] A hydraulic drive component is installed inside the supporting main shaft, and the hydraulic drive component includes a driving pump, an oil tank and a connecting pipe. The oil tank inside the driving pump is fixedly installed below the driving pump, and a connecting pipe is fixedly installed on the upper end of the oil tank. The connecting pipe is used to pass through one side of the driving pump and communicate with the hydraulic pipe.

[0031] As an optional solution of the screening device for construction aggregates of the present invention, wherein: the driving structure further includes a reducer and a third motor, the top end of the supporting main shaft is equipped with a reducer, and the top end of the reducer is equipped with a third motor;

[0032] The centrifugal frame is fixedly mounted on the inner wall of the rotating bottom plate and the inclined bottom plate; the bottom end of the supporting main shaft is fixed to the upper surface of the supporting cone frame, and the bottom end of the supporting main shaft is also provided with a rotating bearing;

[0033] Each group of grinding racks is symmetrically mounted on the outside of the supporting spindle;

[0034] An outer feed barrel is provided on one side of the barrel, a first motor is fixedly mounted on one end of the outer feed barrel, a spiral wheel is rotatably mounted on one end of the first motor, and a feed port is provided on the upper end of the spiral wheel.

[0035] The present invention has the following beneficial effects:

[0036] 1. The screening device for construction aggregates uses the crushing effect of the crushing frame and the distance between the fixed cutting bar and the moving cutting bar to limit the maximum diameter of the aggregate within a specified range and break up the aggregate with cracks to avoid the hidden dangers of subsequent use of the aggregate cracks, which is convenient for the subsequent structure to be handled;

[0037] The device utilizes the toggling and friction effects of multiple outer iron bristles and the second motor to provide aggregate movement while rubbing, thereby achieving the effect of providing friction and outer surface polishing on the aggregate, removing spots or other impurities on the surface of the stone to avoid affecting the use strength of the concrete;

[0038] The spacing of the screening cavities is used to achieve a screening effect on the aggregate, so that stones of different sizes fall into the screening cavities with corresponding spacings, and the first collection cavity, the second collection cavity and the third collection cavity are classified according to the spacing of the screening cavities, and the screened aggregates are collected and processed, thereby realizing the refined screening function of the stones. The spacing of the screening cavities can be adjusted according to actual needs to achieve aggregate classification according to different needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0040] Figure 2 It is a schematic diagram of the internal structure of the screening frame and the screening collection frame of the present invention.

[0041] Figure 3 It is a schematic diagram of the internal structure of the gravel rack of the present invention.

[0042] Figure 4 It is a schematic diagram of the arrangement structure of the limiting grid of the present invention.

[0043] Figure 5 It is a schematic diagram of the structure of the adjustment frame of the present invention.

[0044] Figure 6 It is a schematic diagram of the side structure of the adjustment frame of the present invention.

[0045] Figure 7 It is a schematic diagram of the fixed bottom shaft structure of the present invention.

[0046] In the figure: 1, outer support frame; 2, screening frame; 21, limit ring; 22, limit grid; 23, second motor; 24, turntable; 25, connecting rod; 26, screening chamber; 3, screening collection frame; 31, first ring; 32, second ring; 33, third ring; 34, first collection chamber; 35, second collection chamber; 36, third collection chamber; 37, fourth ring; 4, stone crushing frame; 41, barrel; 42, limit inner ring; 43, centrifugal frame; 44, fixed cutting strip; 45, throwing trough; 46, moving cutting strip; 5, grinding frame; 51, supporting bottom plate; 52, rotating bottom plate; 53, oblique bottom plate; 54, drain trough; 55, step strip; 56, vertical strip; 57 , inclined plane; 6, adjustment frame; 61, hydraulic pipe; 62, push rod; 63, support rod sleeve; 64, telescopic shaft; 65, buffer spring; 66, connecting base; 7, hydraulic drive; 71, drive pump; 72, oil tank; 73, connecting pipe; 8, bristle end; 81, fixed bottom shaft; 82, outer iron bristles; 83, inner iron bristles; 9, driving structure; 91, supporting spindle; 92, connecting bearing; 93, reducer; 94, third motor; 11, upper support ear; 12, lower support ear; 13, shock-absorbing spring; 14, supporting cone frame; 15, rubber ring; 16, supporting base frame; 17, outer feed barrel; 18, first motor; 19, spiral wheel; 20, feed port. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] Example 1

[0049] See also Figure 1-Figure 7 , one of the screening devices for construction aggregates comprises an outer support frame 1 and support base frames 16 on both sides of the outer support frame 1, a screening frame 2 is installed inside the outer support frame 1, a supporting cone frame 14 is also installed at the axis of the screening frame 2, and a rubber ring 15 is installed at the lower end of the supporting cone frame 14;

[0050] The screening frame 2 includes a limiting ring 21, a limiting grid 22 and a screening cavity 26. The limiting ring 21 is installed at the lower end of the outer support frame 1. The limiting grids 22 are arranged in a ring shape on the inner wall of the limiting ring 21. There is a conical groove between every two limiting grids 22, and the conical groove is the screening cavity 26.

[0051] One end of the limiting grid 22 is fixed to the inner wall of the limiting ring 21 , and the other end of the limiting grid 22 is fixed to the rubber ring 15 .

[0052] The internal spacing of the screening cavity 26 is in a state of changing from small to large;

[0053] The screening and collecting frame 3 is fixedly mounted on the lower surface of the screening frame 2. The screening and collecting frame 3 includes a first ring 31, a second ring 32, a third ring 33 and a fourth ring 37. The first ring 31 is fixedly mounted on the lower surface of the limiting grid 22.

[0054] A second ring 32 is installed on the outer side of the first ring 31 and is located on the lower surface of the limiting grid 22;

[0055] A third ring 33 located on the lower surface of the limiting grid 22 is installed on the outer side of the second ring 32;

[0056] A fourth ring 37 located on the lower surface of the limiting grid 22 is installed on the outer side of the third ring 33;

[0057] The screening and collecting frame 3 further includes a first collecting chamber 34, a second collecting chamber 35 and a third collecting chamber 36, wherein the first collecting chamber 34 is provided between the first ring 31 and the second ring 32;

[0058] A second collecting chamber 35 is provided between the second ring 32 and the third ring 33;

[0059] A third collecting chamber 36 is provided between the third ring 33 and the fourth ring 37;

[0060] The screening frame 2 further includes a second motor 23, a turntable 24 and a connecting rod 25. The second motor 23 is fixedly mounted on the outer side of the outer support frame 1, and the turntable 24 is rotated at one end of the second motor 23;

[0061] An upper support ear 11 is arranged on the outer side of the outer support frame 1, and a lower support ear 12 is arranged on the outer side of the limiting ring 21. A shock absorbing spring 13 is fixedly installed on the lower surface of the upper support ear 11, and the shock absorbing spring 13 is used to connect the upper support ear 11 and the lower support ear 12;

[0062] One end of the rotating disk 24 is rotatably connected to a connecting rod 25 , and the other end of the connecting rod 25 is rotatably connected to the outer side of the limiting ring 21 . The second motor 23 is used to provide a vibration effect for the limiting ring 21 .

[0063] Working principle of screening frame 2: according to Figure 1 , 2 As shown in , 4, taking a stone as an example, the stone first falls from the top of the support cone frame 14, and then the umbrella-shaped structure of the support cone frame 14 makes the stone slide along the support cone frame 14 toward the upper surface of the limiting grid 22, and the spacing from the inside to the outside of the screening cavity 26 changes from small to large. When the stone slides along the upper surface of the limiting grid 22, when the spacing in the screening cavity 26 is larger than the current stone diameter, it passes through the screening cavity 26 and falls downward. When the stone is larger than the current spacing of the screening cavity 26, it continues to slide forward until the spacing of the screening cavity 26 is larger than the diameter of the stone, causing the stone to fall downward. This structure uses the spacing size of the screening cavity 26 to achieve a screening effect on the stones, so that stones of different sizes fall into the corresponding spacing, thereby realizing a refined screening function for the stones.

[0064] The stones are finely screened by the limiting grid 22 and fall into the first collection chamber 34, the second collection chamber 35 and the third collection chamber 36 according to their sizes. The bottom surfaces inside the first collection chamber 34, the second collection chamber 35 and the third collection chamber 36 are in an inclined state, so that the stones that enter can be poured out smoothly, completing the final screening and collection operation.

[0065] When the limiting grid 22 is screening, the second motor 23 rotates and drives the turntable 24 to operate, while driving the connecting rod 25 to move up and down, driving the limiting ring 21 to move at the same time, and providing a vibration effect for the limiting ring 21. The vibration effect of the limiting ring 21 is beneficial to the sliding smoothness of the stone on the upper surface of the limiting grid 22 to avoid blockage. At the same time, the cooperation of the upper support ear 11, the lower support ear 12 and the shock-absorbing spring 13 provides a weakening effect on the vibration.

[0066] Example 2

[0067] This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 1-Figure 7 A crushing frame 4 is installed above the outer support frame 1, and the crushing frame 4 includes a barrel 41, a limiting inner ring 42, a centrifugal frame 43, a fixed cutting strip 44, a throwing chute 45 and a movable cutting strip 46. The inner wall of the barrel 41 is fixedly installed with a limiting inner ring 42;

[0068] The spacing between one side of the moving cutting strip 46 and one end of the fixed cutting strip 44 is 20 mm;

[0069] The upper end of the barrel 41 is equipped with a driving structure 9, which includes a supporting spindle 91 and a connecting bearing 92. The supporting spindle 91 is rotatably installed inside the barrel 41, and a connecting bearing 92 is installed on the outer side of the upper end of the supporting spindle 91. The connecting bearing 92 is used to rotatably install the supporting spindle 91 in the barrel 41. The outer side of the supporting spindle 91 is fixedly equipped with a centrifugal frame 43.

[0070] Fixed cutting strips 44 are arranged on the inner wall of the limiting inner ring 42 , and material throwing grooves 45 are arranged in a ring shape on the outer side of the centrifugal frame 43 . A movable cutting strip 46 located in the centrifugal frame 43 is provided on one side of the inner wall of the material throwing groove 45 .

[0071] Working principle of gravel rack 4: Figure 1 , 2 As shown in FIG. 3 , the stones are fed into the barrel 41 through an external conveying device and fall into the centrifugal frame 43. The centrifugal frame 43 is driven to rotate through the internal support structure, so that the stones inside form a centrifugal force, which causes them to be thrown outward and thrown into the throwing chute 45;

[0072] The device utilizes the relative movement of the centrifugal frame 43 and the barrel 41 to displace the movable cutting strip 46 and the fixed cutting strip 44, so that the stones thrown into the throwing trough 45 are thrown out again by centrifugal force and cut by the movable cutting strip 46 and the fixed cutting strip 44. The fixed cutting strip 44 and the movable cutting strip 46 are provided with a gap inside, so that the maximum diameter of the cut stones is limited within 20 mm.

[0073] The function of the stone crushing rack 4 is to limit the maximum diameter of the stone within a specified range and to break the stone with cracks to avoid the hidden dangers of subsequent use caused by the stone cracks.

[0074] Example 3

[0075] This embodiment is an improvement made on the basis of embodiment 2. For details, please refer to Figure 1-Figure 7 Two groups of grinding racks 5 are arranged inside the barrel 41, each group of grinding racks 5 has two, the grinding racks 5 include a supporting bottom plate 51, a rotating bottom plate 52, an inclined bottom plate 53 and a drain groove 54, the inner wall of the barrel 41 is provided with a supporting bottom plate 51, and a drain groove 54 is provided on one side of the supporting bottom plate 51;

[0076] A rotating bottom plate 52 is also fixedly mounted on the outer side of the supporting main shaft 91, and an inclined bottom plate 53 is provided on one side of the rotating bottom plate 52;

[0077] The grinding frame 5 further includes step bars 55, vertical bars 56 and inclined surfaces 57. The upper surface of the supporting base plate 51 is arranged with step bars 55, the upper surface of the supporting base plate 51 is also arranged with vertical bars 56, and the upper surface of the step bars 55 is provided with inclined surfaces 57;

[0078] The inclined surface 57 is used to achieve the tumbling effect of the stone;

[0079] The vertical bars 56 are used to slow down the movement of the stones;

[0080] The lower surface of the rotating base plate 52 is densely arranged with bristle ends 8, and the bristle end 8 includes a fixed bottom shaft 81, outer iron bristles 82 and inner iron bristles 83. The lower surface of the rotating base plate 52 is provided with a fixed bottom shaft 81, and the lower surface of the fixed bottom shaft 81 is densely arranged with inner iron bristles 83, and the outer side of the inner iron bristles 83 is arranged in a ring shape with outer iron bristles 82.

[0081] Working principle of the grinding rack 5: the broken stones fall into the upper surface of the upper support base plate 51, and the support main shaft 91 drives the rotating base plate 52 to rotate and move, and at the same time, the lower surfaces of the inner iron bristles 83 and the outer iron bristles 82 contact and rub with the stones on the upper surface of the support base plate 51. At the same time, during the friction process, the friction resistance is large, which will drive the stone to move. When passing through the step bar 55, the height difference generated by the step bar 55 allows the stone to be turned over when passing through, and at the same time, when passing through the vertical bar 56, the resistance of the stone passing through can be increased;

[0082] When the friction force is greater than the friction force between the outer iron bristles 82 and the stone, it stays here and forms a speed difference with the rotating bottom plate 52, and performs a friction operation on the stone. The outer surface of the stone is polished by the outer iron bristles 82 and the inner iron bristles 83. When the subsequent stone is brought here by the outer iron bristles 82 and the inner iron bristles 83, the first stone is squeezed out and moves to the next position with the movement of the outer iron bristles 82.

[0083] Through the moving and friction effects of multiple outer iron bristles 82 and the second motor 23, the stone is moved while rubbing, thereby achieving the effect of providing friction and polishing the outer surface of the stone. When passing through the leakage groove 54, it falls into the lower polishing frame 5, where it is processed, and finally falls into the upper surface of the limiting grid 22 through the supporting cone frame 14, completing the processing and screening effect of the stone.

[0084] Example 4

[0085] This embodiment is an improvement made on the basis of embodiment 3. For details, please refer to Figure 1-Figure 6, a support plate is installed at the upper end of the rotating base plate 52, and two adjustment frames 6 are installed at the lower ends of the support plates. The adjustment frames 6 include a hydraulic pipe 61, a push rod 62, a support rod sleeve 63, a telescopic shaft 64, a buffer spring 65 and a connecting base 66. The push rod 62 is symmetrically installed inside the hydraulic pipe 61, and a support rod sleeve 63 is rotatably installed at one end of the hydraulic pipe 61. The telescopic shaft 64 is installed inside the support rod sleeve 63, and a buffer spring 65 located in the support rod sleeve 63 is also installed at one end of the telescopic shaft 64. A connecting base 66 is installed on the upper surface of the rotating base plate 52, and the lower end of the telescopic shaft 64 is used to be connected to the connecting base 66. The interior of the hydraulic pipe 61 is filled with oil;

[0086] A hydraulic driving component 7 is installed inside the support main shaft 91, and the hydraulic driving component 7 includes a driving pump 71, an oil tank 72 and a connecting pipe 73. The oil tank 72 located inside the driving pump 71 is fixedly installed below the driving pump 71, and a connecting pipe 73 is fixedly installed on the upper end of the oil tank 72. The connecting pipe 73 is used to pass through one side of the driving pump 71 and communicate with the hydraulic pipe 61.

[0087] When the outer iron bristles 82 and the inner iron bristles 83 are used to grind the stones on the upper surface of the support base plate 51, the oil inside the hydraulic pipe 61 is sucked by the connecting pipe 73 through the driving pump 71, so that a negative pressure state is formed inside the hydraulic pipe 61, and the two push rods 62 are gathered inward. At the same time, the support rod sleeve 63 and the telescopic shaft 64 are driven to move in a symmetrical state, so that the angle between the support rod sleeve 63 and the rotating base plate 52 is gradually increased, and the distance between the rotating base plate 52 and the support plate is increased, and downward pressure is applied to the rotating base plate 52, The friction effect between the outer iron bristles 82 and the stones is increased, and the height is adjusted to avoid the state where the rotating base plate 52 and the supporting base plate 51 are blocked and cannot operate due to too many stones, thereby realizing the function of flexible adjustment of the height of the rotating base plate 52.

[0088] Example 5

[0089] This embodiment is an improvement made on the basis of embodiment 4. For details, please refer to Figure 1-Figure 7 The driving structure 9 further includes a reducer 93 and a third motor 94. The reducer 93 is installed at the top of the supporting spindle 91, and the third motor 94 is installed at the top of the reducer 93;

[0090] The centrifugal frame 43 is fixedly mounted to the inner wall of the rotating bottom plate 52 and the inclined bottom plate 53; the bottom end of the supporting spindle 91 is fixed to the upper surface of the supporting cone frame 14, and the bottom end of the supporting spindle 91 is also provided with a rotating bearing;

[0091] Each set of grinding frames 5 is symmetrically mounted on the outer side of the supporting spindle 91;

[0092] An outer feed barrel 17 is provided on one side of the barrel 41 , a first motor 18 is fixedly mounted on one end of the outer feed barrel 17 , a spiral wheel 19 is rotatably mounted on one end of the first motor 18 , and a feed port 20 is provided on the upper end of the spiral wheel 19 .

[0093] The torque of the third motor 94 is increased by the reducer 93 and transmitted to the supporting spindle 91, and the centrifugal frame 43 and the rotating bottom plate 52 are supported by the supporting spindle 91 to operate simultaneously, so as to achieve the crushing effect of the centrifugal frame 43 and the limiting inner ring 42, and the friction effect of the rotating bottom plate 52 and the supporting bottom plate 51;

[0094] Through an external conveying device, the stones are poured into the interior of the outer feed barrel 17 from the feed port 20, and a spiral wheel 19 is installed inside the outer feed barrel 17 for rotation. The spiral wheel 19 is driven by a first motor 18, and the spiral wheel 19 provides a conveying effect for the incoming stones, and intermittently feeds the stones into the interior of the barrel 41 for crushing, grinding and screening.

[0095] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0096] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A screening device for construction aggregates, comprising an outer support frame (1) and supporting base frames (16) on both sides of the outer support frame (1), characterized in that: A screening frame (2) is installed inside the outer support frame (1), a supporting cone frame (14) is also installed at the axis of the screening frame (2), and a rubber ring (15) is installed at the lower end of the supporting cone frame (14); The screening frame (2) comprises a limiting ring (21), a limiting grid (22) and a screening cavity (26); the limiting ring (21) is installed at the lower end of the outer support frame (1); the limiting grids (22) are arranged in a ring shape on the inner wall of the limiting ring (21); a conical groove is provided between every two limiting grids (22); the conical groove is the screening cavity (26); One end of the limiting grid (22) is fixed to the inner wall of the limiting ring (21), and the other end of the limiting grid (22) is fixed to the rubber ring (15); The internal spacing of the screening cavity (26) is in a state of changing from small to large; A screening collection frame (3) is fixedly mounted on the lower surface of the screening frame (2), the screening collection frame (3) comprising a first ring (31), a second ring (32), a third ring (33) and a fourth ring (37), and the first ring (31) is fixedly mounted on the lower surface of the limiting grid (22); A second ring (32) is installed on the outer side of the first ring (31) and is located on the lower surface of the limiting grid (22); A third ring (33) is installed on the outer side of the second ring (32) and is located on the lower surface of the limiting grid (22); A fourth ring (37) located on the lower surface of the limiting grid (22) is installed on the outer side of the third ring (33); The screening and collecting frame (3) further comprises a first collecting chamber (34), a second collecting chamber (35) and a third collecting chamber (36), wherein the first collecting chamber (34) is provided between the first ring (31) and the second ring (32); A second collecting chamber (35) is provided between the second ring (32) and the third ring (33); A third collecting chamber (36) is provided between the third ring (33) and the fourth ring (37); The screening frame (2) further comprises a second motor (23), a rotating disk (24) and a connecting rod (25); the second motor (23) is fixedly mounted on the outer side of the outer support frame (1); and a rotating disk (24) is rotatably mounted at one end of the second motor (23); An upper support ear (11) is arranged on the outer side of the outer support frame (1), a lower support ear (12) is arranged on the outer side of the limiting ring (21), a shock absorbing spring (13) is fixedly mounted on the lower surface of the upper support ear (11), and the shock absorbing spring (13) is used to connect the upper support ear (11) and the lower support ear (12); One end of the rotating disk (24) is rotatably connected to a connecting rod (25), the other end of the connecting rod (25) is rotatably connected to the outer side of the limiting ring (21), and the second motor (23) is used to provide a vibration effect for the limiting ring (21); A stone crushing frame (4) is installed above the outer support frame (1), and the stone crushing frame (4) comprises a barrel (41), a limiting inner ring (42), a centrifugal frame (43), a fixed cutting strip (44), a material throwing chute (45) and a movable cutting strip (46), and the inner wall of the barrel (41) is fixedly installed with the limiting inner ring (42); The distance between one side of the movable cutting strip (46) and one end of the fixed cutting strip (44) is 20 millimeters; A driving structure (9) is installed at the upper end of the barrel (41), and the driving structure (9) includes a supporting spindle (91) and a connecting bearing (92). The supporting spindle (91) is rotatably installed inside the barrel (41), and a connecting bearing (92) is installed on the outer side of the upper end of the supporting spindle (91). The connecting bearing (92) is used to rotatably install the supporting spindle (91) in the barrel (41), and a centrifugal frame (43) is fixedly installed on the outer side of the supporting spindle (91); The inner wall of the limiting inner ring (42) is arranged with fixed cutting strips (44), the outer side of the centrifugal frame (43) is arranged with material throwing grooves (45) in a ring shape, and one side of the inner wall of the material throwing groove (45) is provided with a moving cutting strip (46) located in the centrifugal frame (43); Two groups of grinding racks (5) are arranged inside the barrel (41), each group of the grinding racks (5) has two grinding racks (5), the grinding racks (5) include a supporting bottom plate (51), a rotating bottom plate (52), an inclined bottom plate (53) and a drain groove (54), the inner wall of the barrel (41) is provided with a supporting bottom plate (51), and one side of the supporting bottom plate (51) is provided with a drain groove (54); A rotating bottom plate (52) is also fixedly mounted on the outer side of the supporting main shaft (91), and an inclined bottom plate (53) is provided on one side of the rotating bottom plate (52); The grinding frame (5) further comprises step bars (55), vertical bars (56) and inclined surfaces (57); the upper surface of the supporting base plate (51) is arranged with step bars (55); the upper surface of the supporting base plate (51) is also arranged with vertical bars (56); and the upper surface of the step bars (55) is provided with inclined surfaces (57); The inclined surface (57) is used to achieve a tumbling effect of the aggregate; The vertical bars (56) are used to slow down the movement speed of the aggregate; The lower surface of the rotating bottom plate (52) is densely arranged with bristle ends (8).

2. The screening device for construction aggregate according to claim 1, characterized in that: The bristle end (8) comprises a fixed bottom shaft (81), outer iron bristles (82) and inner iron bristles (83); the lower surface of the rotating bottom plate (52) is provided with a fixed bottom shaft (81); the lower surface of the fixed bottom shaft (81) is densely arranged with inner iron bristles (83); and the outer side of the inner iron bristles (83) is arranged in a ring shape with outer iron bristles (82).

3. The screening device for construction aggregate according to claim 2, characterized in that: A support plate is installed at the upper end of the rotating base plate (52), and two adjustment frames (6) are installed at the lower end of each of the support plates. The adjustment frame (6) comprises a hydraulic pipe (61), a push rod (62), a support rod sleeve (63), a telescopic shaft (64), a buffer spring (65) and a connecting base (66). The push rod (62) is symmetrically installed inside the hydraulic pipe (61), a support rod sleeve (63) is rotatably installed at one end of the hydraulic pipe (61), a telescopic shaft (64) is installed inside the support rod sleeve (63), and a buffer spring (65) located inside the support rod sleeve (63) is also installed at one end of the telescopic shaft (64). A connecting base (66) is installed on the upper surface of the rotating base plate (52), and the lower end of the telescopic shaft (64) is used to be connected to the connecting base (66). The interior of the hydraulic pipe (61) is filled with oil. A hydraulic drive component (7) is installed inside the supporting main shaft (91), and the hydraulic drive component (7) includes a driving pump (71), an oil tank (72) and a connecting pipe (73). The oil tank (72) located inside the driving pump (71) is fixedly installed below the driving pump (71), and a connecting pipe (73) is fixedly installed at the upper end of the oil tank (72). The connecting pipe (73) is used to pass through one side of the driving pump (71) and communicate with the hydraulic pipe (61).

4. The screening device for construction aggregate according to claim 3, characterized in that: The driving structure (9) further comprises a reducer (93) and a third motor (94); the reducer (93) is mounted on the top end of the supporting main shaft (91); and the third motor (94) is mounted on the top end of the reducer (93); The centrifugal frame (43) is fixedly mounted on the inner wall of the rotating bottom plate (52) and the inclined bottom plate (53); the bottom end of the supporting main shaft (91) is fixed to the upper surface of the supporting cone frame (14), and the bottom end of the supporting main shaft (91) is also provided with a rotating bearing; Each group of the grinding frames (5) is symmetrically mounted on the outside of the supporting spindle (91); An external feed barrel (17) is provided on one side of the barrel (41), a first motor (18) is fixedly mounted on one end of the external feed barrel (17), a spiral wheel (19) is rotatably mounted on one end of the first motor (18), and a feed port (20) is provided at the upper end of the spiral wheel (19).

Images