Cement stabilized macadam mixing anti-segregation device

Abstract

The application discloses a cement stabilized macadam mixing anti-segregation device, which comprises a mixing cylinder, four supporting columns arranged at the bottom of the mixing cylinder, a mounting frame arranged at the side of the mixing cylinder, a cement hopper arranged at the top of the mounting frame, two L-shaped mounting rods arranged at the two sides of the side of the mixing cylinder, and a spiral discharging mechanism arranged between the two L-shaped mounting rods. Through the arrangement of the spiral track, the meshing groove, the first gear, the first wedge block, the second wedge block and the fourth wedge block, the distance from the discharging opening to the mixed material liquid surface is always consistent when the macadam aggregate is discharged, so that the gravitational potential energy of the aggregate is always consistent when the aggregate is discharged, the distance from the discharging opening to the mixed material liquid surface is prevented from gradually reducing with the increase of the mixed material liquid surface, a large amount of aggregate is prevented from accumulating on the surface of the mixed material, the caking and segregation phenomenon is avoided, and the staff intervention is not needed, so that the operation is simple, convenient and fast.

Description

Technical Field

[0001] This invention relates to the field of water-stabilized crushed stone mixing technology, specifically to a cement-stabilized crushed stone mixing anti-segregation device. Background Technology

[0002] Cement-stabilized crushed stone is a mixture of crushed stone with a certain gradation, which is then mixed with sufficient cement and water. After compaction and curing, when its strength meets the specified requirements, it is called cement-stabilized crushed stone. Cement-stabilized crushed stone has good slab properties, and its water stability and frost resistance are better than those of lime-stabilized soil. It is widely used in road construction.

[0003] The invention patent with patent number CN113894936A discloses an anti-segregation device for cement-stabilized crushed stone mixing plants. This invention effectively solves the problem that existing cement-stabilized crushed stone is prone to segregation during the mixing and production process, which affects the quality of road paving. The technical solution includes: the device can evenly spread the material conveyed to the temporary storage bin by the conveyor belt in the temporary storage bin, which can better prevent the material from accumulating into a cone-shaped slope in the temporary storage bin and thus avoid segregation. Moreover, it can simultaneously adjust the position height of the temporary storage bin relative to the conveyor belt, so that the falling distance of the material in the air is always kept within a constant range.

[0004] The aforementioned device uses the gravity of falling gravel to drive two resistance rollers, thereby preventing the material distribution pipe from swinging within the temporary storage bin and achieving uniform material distribution within the bin. However, the actual occurrence of cement segregation is not solely due to accumulation; it is inextricably linked to the distance between the discharge port and the cement surface. Furthermore, as gravel and cement are gradually added, the cement surface gradually rises. With the discharge port position remaining unchanged, the gravitational potential energy of the falling gravel gradually decreases. This decreasing gravitational potential energy causes the gravel to accumulate on the cement surface, forming clumps and resulting in segregation. Summary of the Invention

[0005] The present invention addresses the problem of overly simplistic solutions in existing technologies by providing a significantly different solution. Specifically, the present invention aims to provide a cement-stabilized crushed stone mixing anti-segregation device to solve the problem mentioned in the background art, where the distance between the discharge port and the cement surface gradually decreases as crushed stone and cement are added, resulting in a decrease in the gravitational potential energy of the falling crushed stone and causing accumulation.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a cement-stabilized crushed stone mixing and anti-segregation device, comprising a mixing cylinder, four support columns at the bottom of the mixing cylinder, an mounting frame on the side of the mixing cylinder, a cement hopper on the top of the mounting frame, two L-shaped mounting rods on both sides of the mixing cylinder, a spiral feeding mechanism between the two L-shaped mounting rods, an adjusting mechanism on the top of the spiral feeding mechanism, a first mounting rod in the middle of the spiral feeding mechanism, a plurality of first wedge blocks on the first mounting rod, and a second mounting rod at the inlet end of the spiral feeding mechanism, a plurality of second wedge blocks on the second mounting rod.

[0007] Preferably, the spacing between the first wedge blocks and the second wedge blocks is the same, and the first wedge blocks and the second wedge blocks are staggered.

[0008] Preferably, the spiral feeding mechanism includes a spiral track, a plurality of meshing grooves and a plurality of meshing teeth. The spiral track is disposed between two L-shaped mounting rods, the plurality of meshing grooves are disposed on the inner sidewall of the spiral track, and the plurality of meshing teeth are disposed on the outer sidewall of the spiral track, and the plurality of meshing grooves and the plurality of meshing teeth are arranged in an up-down staggered manner.

[0009] Preferably, the adjusting mechanism includes a rotating motor, a feeding cylinder, several third wedge blocks, a feeding inlet, a first gear, a second gear, two feeding cylinders, a fourth wedge block, a fifth wedge block, a connecting column, an adjusting spring, a control button, and a rotating column. The feeding cylinder is located at the top of the spiral track, the feeding inlet is located on the side wall of the feeding cylinder, the several third wedge blocks are located on the side wall of the feeding cylinder, the two feeding cylinders are located at the bottom of the feeding cylinder, and the rotating column is rotatably located at the top of the two feeding cylinders. The two feeding cylinders are rotatably engaged with the first gear. The fourth wedge block is located at the top of the spiral track. The first gear is fixedly mounted on the side wall of one of the feeding cylinders. The rotating column is rotatably mounted on the top of the first gear. The rotating motor is mounted on the top of the rotating column. The output shaft end of the rotating motor is fixedly connected to the first gear. The fifth wedge block is movably mounted on the side wall of the rotating column. The adjusting spring is mounted at the end of the fifth wedge block. The side wall of the rotating column is provided with a mounting groove. The control button is located in the mounting groove. The other end of the adjusting spring is located in the mounting groove. The connecting column is located at the same end of the fifth wedge block.

[0010] Preferably, an electromagnetic control valve is provided at the end of the output pipe of the cement hopper, and the electromagnetic control valve is electrically connected to a control button.

[0011] Preferably, the distance between the third wedge blocks is half the distance between the first and second wedge blocks.

[0012] Preferably, the first gear and the second gear are provided with two through slots in the middle, and the two through slots are connected and cooperate with two feeding cylinders.

[0013] Preferably, a feed plate is slidably inserted into the bottom of the mixing cylinder.

[0014] Compared with the prior art, the beneficial effects of the present invention are: This invention, through the arrangement of a spiral track, meshing groove, first gear, first wedge block, second wedge block, and fourth wedge block, achieves uniform feeding of crushed stone aggregate onto the surface of the mixture. After laying one layer of crushed stone aggregate, the first, second, and fourth wedge blocks engage to ensure uniform feeding of the aggregate. The feeding port is then raised to a corresponding height. Furthermore, the third and fifth wedge blocks and an adjusting spring lock the feeding port at the raised height, ensuring the laying of the next layer of crushed stone aggregate. This maintains a consistent distance between the feeding port and the liquid surface of the mixture, ensuring the gravitational potential energy of the aggregate remains constant. This prevents the distance between the feeding port and the liquid surface from gradually decreasing as the liquid surface rises, thus avoiding excessive aggregate accumulation on the surface of the mixture and preventing clumping and segregation. The process requires no operator intervention, is simple, convenient, and quick. This invention, through the arrangement of a spiral track, meshing groove, meshing teeth, a second gear, a first gear, and a feeding cylinder, enables the two feeding cylinders to rotate simultaneously while moving along the trajectory of the spiral track during feeding. This makes the aggregate falling from the two feeding cylinders more uniform. In conjunction with the spiral track, a layer of crushed stone aggregate can be evenly spread on the surface of the mixture, so that the liquid level rises to the same height with each layer of crushed stone aggregate. This ensures that the subsequent feeding port rises to the same height each time, which facilitates the setting of the spacing between the wedge blocks. This invention, through the arrangement of several first and second wedge blocks with equal spacing and staggered positioning, and a fourth wedge block, enables the discharge port to rise to a corresponding height during the back-and-forth laying of a layer of aggregate, allowing aggregate to be discharged in both directions, greatly improving work efficiency. By using a fourth wedge block with a distance between several third wedge blocks that is half the distance between the first and second wedge blocks, the discharge port position is locked after the back-and-forth discharge is completed, ensuring the stability of the discharge. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the spiral feeding mechanism of the present invention; Figure 3 This is a schematic diagram of the positional relationship between the first wedge block and the second wedge block of the present invention. Figure 4This is a schematic diagram of the adjustment mechanism structure of the present invention; Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0016] In the diagram: 1. Mixing cylinder; 2. Support column; 3. Spiral feeding mechanism; 31. Spiral track; 32. Meshing groove; 33. Meshing teeth; 5. Mounting frame; 6. Cement hopper; 7. Adjusting mechanism; 71. Rotating motor; 72. Feeding cylinder; 73. Third wedge block; 74. Feed inlet; 75. First gear; 76. Second gear; 77. Feeding cylinder; 78. Fourth wedge block; 79. Fifth wedge block; 710. Connecting column; 711. Adjusting spring; 712. Control button; 713. Rotating column; 8. Second mounting rod; 9. First mounting rod; 10. L-shaped mounting rod; 11. Second wedge block; 12. First wedge block. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figure 1-5An embodiment of the present invention provides a cement-stabilized crushed stone mixing anti-segregation device, comprising a mixing cylinder 1, four support columns 2 at the bottom of the mixing cylinder 1, an mounting frame 5 on the side of the mixing cylinder 1, a cement hopper 6 on the top of the mounting frame 5, two L-shaped mounting rods 10 on both sides of the mixing cylinder 1, a spiral feeding mechanism 3 between the two L-shaped mounting rods 10, an adjusting mechanism 7 on the top of the spiral feeding mechanism 3, a first mounting rod 9 in the middle of the spiral feeding mechanism 3, a plurality of first wedge blocks 12 on the first mounting rod 9, and a second mounting rod 8 at the inlet end of the spiral feeding mechanism 3, a plurality of second wedge blocks 11 on the second mounting rod 8. First, a portion of the mixture is placed into the mixing cylinder 1. Then, crushed stone aggregate is added into the mixing cylinder 1 through the adjusting mechanism 7. The adjusting mechanism 7, in conjunction with the screw feeding mechanism 3, evenly feeds the mixing cylinder 1. After one layer of even feeding is done, the adjusting mechanism 7 abuts against the first wedge block 12 on the first mounting rod 9. Then, the adjusting mechanism 7, in conjunction with the screw feeding mechanism 3, moves in the opposite direction to evenly feed another layer of the mixing cylinder 1. At this point, the adjusting mechanism 7 abuts against the second wedge block 11 on the second mounting rod 8, thereby causing the adjusting mechanism 7 to rise a certain distance. This ensures that the distance between the discharge port and the surface of the mixture remains consistent, preventing the aggregate from accumulating due to changes in the discharge height, which could lead to a decrease in the gravitational potential energy of the aggregate. Furthermore, the aggregate can be evenly fed in both directions, improving work efficiency and making the process convenient and quick.

[0019] Specifically, the first wedge blocks 12 and the second wedge blocks 11 are spaced at the same distance, and the first wedge blocks 12 and the second wedge blocks 11 are staggered.

[0020] Specifically, the spiral feeding mechanism 3 includes a spiral track 31, a plurality of meshing grooves 32 and a plurality of meshing teeth 33. The spiral track 31 is disposed between two L-shaped mounting rods 10. The plurality of meshing grooves 32 are disposed on the inner sidewall of the spiral track 31, and the plurality of meshing teeth 33 are disposed on the outer sidewall of the spiral track 31. The plurality of meshing grooves 32 and the plurality of meshing teeth 33 are arranged in an up-down staggered manner.

[0021] Specifically, the adjusting mechanism 7 includes a rotating motor 71, a feeding cylinder 72, several third wedge blocks 73, a feeding port 74, a first gear 75, a second gear 76, two feeding cylinders 77, a fourth wedge block 78, a fifth wedge block 79, a connecting column 710, an adjusting spring 711, a control button 712, and a rotating column 713. The feeding cylinder 72 is located at the top of the spiral track 31, the feeding port 74 is located on the side wall of the feeding cylinder 72, several third wedge blocks 73 are located on the side wall of the feeding cylinder 72, the two feeding cylinders 77 are located at the bottom of the feeding cylinder 72, and the rotating column 713 is rotatably located at the top of the two feeding cylinders 77. The two feeding cylinders 77 are rotatably engaged with the first gear 75. Four wedge blocks 78 are disposed on the side wall of one of the feeding cylinders 77. Two second gears 76 are fixedly disposed on the side walls of the two feeding cylinders 77. The rotating column 713 is rotatably disposed on the top of the first gear 75. The rotating motor 71 is disposed on the top of the rotating column 713. The output shaft end of the rotating motor 71 is fixedly connected to the first gear 75. The fifth wedge block 79 is movably disposed on the side wall of the rotating column 713. The adjusting spring 711 is disposed at the end of the fifth wedge block 79. The side wall of the rotating column 713 is provided with a mounting groove. The control button 712 is disposed in the mounting groove. The other end of the adjusting spring 711 is disposed in the mounting groove. The connecting column 710 is disposed on the same side end of the fifth wedge block 79. The rotation of the output shaft of the rotating motor 71 drives the first gear 75 to rotate. The rotation of the first gear 75 drives the feed cylinder 72 to move along the trajectory of the spiral track 31. The second gear 76 rotates due to the engagement of the meshing teeth 33. The rotation of the second gear 76 drives the two feeding cylinders 77 to rotate, achieving uniform feeding of the aggregate and preventing aggregate accumulation that could cause centrifugal forces. When the feeding cylinder 77 moves to the end of the spiral track 31, it abuts against the first wedge block 12 via the fourth wedge block 78. Due to the inclined surface between them, the feeding cylinder 77, the first gear 75, and the second gear 76 rise as a whole. Furthermore, the fifth wedge block 79 and the third wedge block 73... The contact causes the fifth wedge block 79 to be squeezed and inserted into the rotating column 713. The fifth wedge block 79 drives the connecting column 710 to contact the control button 712. The control button 712 opens the electromagnetic control valve for three minutes (the opening time of the electromagnetic control valve can be adjusted according to the needs). After the electromagnetic control valve closes, the rotating motor 71 reverses. When the feeding cylinder 77 moves to the other end of the spiral track 31, the above steps are repeated. The feeding can be uniform back and forth, effectively controlling the distance between the liquid surface of the mixture and the feeding port. The gravitational potential energy of the aggregate remains unchanged during feeding, avoiding the aggregate from accumulating on the surface of the mixture due to the decrease in gravitational potential energy, forming agglomeration and segregation. Moreover, no manual operation is required, making the operation simple, convenient and quick.

[0022] Specifically, an electromagnetic control valve is installed at the end of the output pipe of the cement hopper 6, and the electromagnetic control valve is electrically connected to the control button 712.

[0023] Specifically, the distance between the third wedge blocks 73 is half the distance between the first wedge block 12 and the second wedge block 11.

[0024] Specifically, the first gear 75 and the second gear 76 are provided with two through slots in the middle, and the two through slots are connected and cooperate with the two feeding cylinders 77.

[0025] Specifically, a feed plate is slidably inserted into the bottom of the mixing cylinder 1.

[0026] Working principle: First, a portion of the mixture is placed into the mixing cylinder 1. Then, crushed stone aggregate is added into the regulating cylinder through the feed inlet 74. The output shaft of the rotating motor 71 drives the first gear 75 to rotate. The rotation of the first gear 75 drives the feed cylinder 72 to move along the trajectory of the spiral track 31. Through the cooperation of the second gear 76 and the meshing teeth 33, the second gear 76 rotates. The rotation of the second gear 76 drives the two feeding cylinders 77 to rotate, achieving uniform feeding of aggregate and preventing aggregate accumulation that could cause centrifugal force. When the feeding cylinder 77 moves to the end of the spiral track 31, it abuts against the first wedge block 12 through the fourth wedge block 78. Due to the inclined surface between them, the feeding cylinder 77, the first gear 75, and the second gear 76 rise as a whole, and... The fifth wedge 79 is pressed into the rotating column 713 by the contact between the fifth wedge 79 and the third wedge 73. The fifth wedge 79 drives the connecting column 710 to contact the control button 712. The control button 712 opens the electromagnetic control valve for three minutes (the opening time of the electromagnetic control valve can be adjusted according to the needs). After the electromagnetic control valve closes, the rotating motor 71 reverses. When the feeding cylinder 77 moves to the other end of the spiral track 31, the above steps are repeated. The feeding can be uniform in both directions, effectively controlling the distance between the liquid surface of the mixture and the feeding port. The gravitational potential energy of the aggregate remains unchanged during feeding, avoiding the aggregate from accumulating on the surface of the mixture due to the decrease in gravitational potential energy, forming agglomeration and segregation. The uniform feeding of aggregate in both directions improves work efficiency and is convenient and fast.

[0027] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cement-stabilized crushed stone mixing and anti-segregation device, comprising a mixing cylinder (1), four support columns (2) provided at the bottom of the mixing cylinder (1), an installation frame (5) provided on the side of the mixing cylinder (1), and a cement hopper (6) provided at the top of the installation frame (5), characterized in that: Two L-shaped mounting rods (10) are provided on both sides of the mixing cylinder (1). A spiral feeding mechanism (3) is provided between the two L-shaped mounting rods (10). An adjustment mechanism (7) is provided at the top of the spiral feeding mechanism (3). A first mounting rod (9) is provided in the middle of the spiral feeding mechanism (3). Several first wedge blocks (12) are provided on the first mounting rod (9). A second mounting rod (8) is provided at the inlet end of the spiral feeding mechanism (3). Several second wedge blocks (11) are provided on the second mounting rod (8). The first wedge blocks (12) and the second wedge blocks (11) are spaced at the same distance, and the first wedge blocks (12) and the second wedge blocks (11) are staggered. The spiral feeding mechanism (3) includes a spiral track (31), a plurality of meshing grooves (32) and a plurality of meshing teeth (33). The spiral track (31) is disposed between two L-shaped mounting rods (10). The plurality of meshing grooves (32) are disposed on the inner sidewall of the spiral track (31), and the plurality of meshing teeth (33) are disposed on the outer sidewall of the spiral track (31). The plurality of meshing grooves (32) and the plurality of meshing teeth (33) are arranged in an up-down staggered manner. The adjusting mechanism (7) includes a rotating motor (71), a feeding cylinder (72), several third wedges (73), a feeding port (74), a first gear (75), a second gear (76), two feeding cylinders (77), a fourth wedge (78), a fifth wedge (79), a connecting column (710), an adjusting spring (711), a control button (712), and a rotating column (713). The feeding cylinder (72) is located at the top of the spiral track (31), the feeding port (74) is located on the side wall of the feeding cylinder (72), several third wedges (73) are located on the inner side wall of the feeding cylinder (72), and the two feeding cylinders (77) are located at the bottom of the feeding cylinder (72). The two feeding cylinders (77) rotate in cooperation with the first gear (75). The fourth wedge (78) is located at the bottom of the feeding cylinder (72). The first gear (75) is rotatably mounted on the top of the first gear (75), and the second gear (76) is fixedly mounted on the side wall of the two feeding cylinders (77). The rotating column (713) is rotatably mounted on the top of the first gear (75). The rotating motor (71) is mounted on the top of the rotating column (713). The output shaft end of the rotating motor (71) is fixedly connected to the first gear (75). The fifth wedge block (79) is movably mounted on the side wall of the rotating column (713). The adjusting spring (711) is mounted on the end of the fifth wedge block (79). The side wall of the rotating column (713) is provided with an installation groove. The control button (712) is mounted in the installation groove. The other end of the adjusting spring (711) is mounted in the installation groove. The connecting column (710) is mounted on the same side end of the fifth wedge block (79). The spacing between the third wedge blocks (73) is half the spacing between the first wedge block (12) and the second wedge block (11). The first gear (75) engages with the meshing groove (32), the second gear (76) engages with the meshing teeth (33), the fourth wedge block (78) can engage with the first wedge block (12) and the second wedge block (11), and the fifth wedge block (79) can engage with the third wedge block (73).

2. The cement-stabilized crushed stone mixing anti-segregation device according to claim 1, characterized in that: The cement hopper (6) is equipped with an electromagnetic control valve at the end of its output pipe, and the electromagnetic control valve is electrically connected to the control button (712).

3. The cement-stabilized crushed stone mixing anti-segregation device according to claim 1, characterized in that: The first gear (75) and the second gear (76) are provided with two through slots in the middle, and the two through slots are connected and cooperate with two feeding cylinders (77).

4. The cement-stabilized crushed stone mixing anti-segregation device according to claim 1, characterized in that: The bottom of the mixing cylinder (1) is slidably connected to a feeding plate.

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