A large-capacity mixing drum and method of using the same

Abstract

The present invention discloses a large-capacity mixing drum and a method for using the same, including a mixing drum, and further including a feed chamber, a discharge port being provided on one side of the mixing drum, the feed chamber being connected to the discharge port; a partition chamber, the partition chamber being arranged inside the mixing drum and arranged on a side close to the discharge port; and an inner partition plate, the inner partition plate being installed on one side of the partition chamber. The present invention can ensure that there is no leakage and that the filling rate of the mixing drum reaches more than 85%. It can also climb a 14% slope to ensure that there is no leakage. At the same time, there is no need to increase the inclination angle of the mixing drum and the height of the center of gravity during the climbing process, and the safety is relatively high. The design of the feed chamber outlet can speed up the feeding speed. The multiple exhaust holes provided on the spiral blades can also ensure the balance of the air pressure inside the mixing drum. Finally, the top material is diverted to the bottom through multiple guide holes, so that the material enters the mixing cycle and reduces the risk of radial segregation.

Description

Technical Field

[0001] The invention belongs to the technical field of engineering transportation, and in particular, relates to a large-capacity mixing drum and a use method thereof. Background Art

[0002] A concrete mixer truck consists of a car chassis and a special device for concrete mixing and transportation. The special device for concrete mixing and transportation mainly includes a power take-off, front and rear brackets of a mixing drum, a reducer, a hydraulic system, a mixing drum, an operating mechanism, a cleaning system, etc. The mixing drum is a loading container for concrete, which plays the role of loading, mixing and unloading ready-mixed concrete.

[0003] A concrete mixer truck consists of a car chassis and a special device for concrete mixing and transportation. The special device for concrete mixing and transportation mainly includes a power take-off, front and rear brackets of a mixing drum, a reducer, a hydraulic system, a mixing drum, an operating mechanism, a cleaning system, etc. The mixing drum is a loading container for concrete, which plays the role of loading, mixing and unloading ready-mixed concrete.

[0004] The working mode of the existing mixing drum is that the mixing drum rotates to make the concrete move along the spiral direction of the blades, and is mixed and stirred during the occasional lifting and turning process. During the feeding and transportation process, the mixing drum rotates forward, and the concrete moves inward along the blades until it contacts the sealing device at the other end, that is, the concrete is loaded and prevented from leaking. When discharging, the mixing drum reverses and the commercial concrete is discharged outward along the blades.

[0005] The above working method has the following defects:

[0006] First, the mixing drum of existing mixer trucks does not have a self-sealing function, and will leak material when climbing a large slope. In order to ensure that there is no leakage, the inclination angle of the mixing drum is often increased, the center of gravity height is increased, and safety is reduced;

[0007] Second, the existing closed mixing drum or mixing truck technologies all add a sealing device at the back of the mixing drum, and both require the addition of power and control systems, which are costly and complex in structure.

[0008] Third, if a sealing device is added to the existing closed mixing drum, the feeding efficiency of the mixing drum will be reduced, thereby increasing the loading time and reducing the overall working efficiency. Summary of the invention

[0009] The present invention provides a large-capacity mixing drum and a method for using the same, which solve the problems raised in the above-mentioned background technology.

[0010] In order to achieve the above object, the technical solution adopted by the present invention is: a large-capacity mixing drum, including a mixing drum, and also including:

[0011] A discharge port, the discharge port being opened on one side of the mixing drum;

[0012] A spiral blade, wherein the spiral blade comprises a driving area and a material area, the driving area is formed between adjacent spiral blades, and the material area is connected to the discharge port;

[0013] A material isolation cabin, which is arranged inside the material area and divides the material area into a feeding area and a blocking area, and the feeding area is close to a side of the discharge port;

[0014] An inner baffle is arranged at one side of the material isolation chamber and is close to the material feeding area.

[0015] Preferably, the top edge of the spiral blade is in contact with the inner wall of the mixing drum and is sealed, and the bottom of the spiral blade is in contact with the outer surface of the material isolation chamber.

[0016] Preferably, a plurality of exhaust holes are provided on the surface of the spiral blade.

[0017] Preferably, a plurality of flow guide holes are provided on the surfaces of the material separation chamber and the inner partition.

[0018] Preferably, it further comprises a feed cabin, which is arranged in the feed area, and the cabin wall of the feed cabin is in contact with the bottom of the spiral blade.

[0019] Preferably, an oblique cut is provided on a side of the feed chamber close to the partition chamber, and the oblique cut is used to connect the driving area and the feed area.

[0020] Preferably, the material filling line in the mixing drum is higher than the lowest point of the right side port of the feed chamber.

[0021] Preferably, the adjacent spiral blades are used as side surfaces, the outer walls of the feed chamber and the partition chamber are used as bottom surfaces, and the inner wall of the mixing drum is used as top surfaces to form a spiral space, and the feed zone is connected to the spiral space through the oblique cut.

[0022] Preferably, the circular cross-section of the material separation chamber, the opening surface of the discharge port and the plate surface of the inner partition are arranged parallel to each other.

[0023] A method for using a large-capacity mixing drum comprises the following steps:

[0024] Step S1, start the mixing drum and rotate it, and then pour the material into the feed chamber from the discharge port of the mixing drum;

[0025] Step S2, the material is blocked by the inner baffle in the feed chamber, enters the spiral space through the oblique cut, and flows into the next spiral space as the mixing drum rotates;

[0026] Step S3, the material flows from the spiral space into the interior of the mixing drum, gradually filling up the material compartment, that is, gradually filling the mixing drum;

[0027] Step S4, the material in the material isolation chamber with a tendency to move toward the feed area is blocked by the inner partition. When the material fills the mixing drum, the material filling line is higher than the lowest point of the right port of the feed chamber.

[0028] The beneficial effects of adopting the above technical scheme are: first, the self-sealing function is realized without increasing the cost or only increasing the cost very little, and it is ensured that there is no leakage; second, the loading rate of concrete is improved, and the filling rate of the mixing drum reaches more than 85% without affecting the feeding and discharging of the mixing drum, and it can also climb a 14% slope to ensure that there is no leakage; third, the strength is reliable, and there is no high requirement for the sealing of the internal welds of the mixing drum, and the process is simple to implement; fourth, there is no need to increase the inclination angle of the mixing drum and increase the center of gravity during the climbing process, and the safety is relatively high; fifth, the concrete can be sealed only through the isolation cabin, and there is no need to add an additional sealing device at the back of the mixing drum for sealing, the process is simple, and the cost is reduced; sixth, through the design of the feed cabin outlet, the feeding speed can be accelerated, which can prevent the reduction of the feeding efficiency of the mixing drum, thereby reducing the loading time and increasing the overall work efficiency; seventh, through the multiple exhaust holes set on the spiral blades, the balance of the air pressure inside the mixing drum is guaranteed; eighth, through multiple diversion holes, the top material is diverted to the bottom, allowing the material to enter the mixing cycle, reducing the risk of radial segregation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is an assembly diagram of the material isolation cabin and the spiral blade provided by the present invention;

[0030] Figure 2 is a partial cross-sectional view of a mixing drum provided by the present invention;

[0031] Figure 3 is an assembly diagram of the spiral blade provided by the present invention;

[0032] Figure 4 It is an assembly diagram of the material isolation cabin provided by the present invention;

[0033] Figure 5 It is an assembly diagram of the material separation cabin and the material feeding cabin provided by the present invention;

[0034] Figure 6 It is an assembly diagram of the mixing drum provided by the present invention;

[0035] Figure 7 is an internal diagram of a mixing drum provided by the present invention;

[0036] Figure 8 This is a state diagram of the mixing drum of the present invention after the mixing drum is rotated by an angle;

[0037] in:

[0038] 1. Mixing drum; 2. Feed chamber; 3. Partition chamber; 4. Inner partition; 5. Discharge port; 6. Spiral blades; 7. Exhaust hole; 8. Guide hole; 9. Head; p. Material filling line; g. Horizontal line; m. Spiral space. DETAILED DESCRIPTION

[0039] The specific implementation methods of the present invention are further explained in detail below by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solution of the present invention and facilitating its implementation.

[0040] like Figures 1 to 8 As shown, the present invention is a large-capacity mixing drum and a method for using the same, which improves the loading rate of concrete, that is, without affecting the feeding and discharging of the mixing drum, the filling rate of the mixing drum reaches more than 85%, and can also climb a 14% slope to ensure no leakage.

[0041] The specific working method is described below with specific embodiments:

[0042] Embodiment 1:

[0043] Since the mixing drum of existing concrete mixer trucks does not have a self-sealing function, it will leak material when climbing a large slope. In order to ensure that there is no leakage, the inclination angle of the mixing drum is often increased, the center of gravity height is increased, and safety is reduced. At the same time, in this case, the filling rate of the mixing drum can only be controlled below 65%;

[0044] In addition, the existing closed mixing drum or mixer truck technologies all add a sealing device to the back of the mixing drum, and both require the addition of a power and control system, which is costly, complex in structure, has many failure points, and still has the risk of leakage.

[0045] Based on this, in this embodiment, a large-capacity mixing drum is proposed, including a mixing drum 1, and further including:

[0046] A discharge port 5 is provided on one side of the mixing drum 1 ; materials are poured into the mixing drum 1 through the discharge port 5 .

[0047] The spiral blade 6 includes a driving area 61 and a material area 62. The driving area 61 is formed between adjacent spiral blades 6, and the material area 62 is connected to the discharge port 5. The driving area 61 is used to transport the material into the mixing drum 1, and the material area 62 is the position where the material just enters the mixing drum 1, and the material includes but is not limited to concrete.

[0048] More specifically, a plurality of exhaust holes 7 are provided on the surface of the spiral blade 6 to ensure the balance of the air pressure inside the mixing drum 1 . The pitches between adjacent spiral blades 6 constitute the driving area 61 , along which the spiral blade 6 spirally wraps the central axis.

[0049] The material isolation chamber 3 is arranged inside the material area 62, and divides the material area 62 into a feeding area 621 and a blocking area 622. The feeding area 621 is close to the side of the discharge port 5. The feeding area 621 is the position where the material enters the mixing drum 1, and the blocking area 622 is used to prevent the material from flowing toward the discharge port 5.

[0050] The principle of this embodiment is as follows: the material enters the mixing drum 1 from the discharge port 5, that is, the material first enters the material area 62 and is located at the feed area 621 in the material area 62, and then the material enters the drive area 61 through the rotation of the mixing drum 1, that is, the material is pushed by the spiral blade 6 into the loading internal space of the mixing drum 1. Due to the blocking effect of the inner partition 4, the material cannot be discharged in the original way, that is, the material is blocked in the blocking area 622. At this time, under the premise of not affecting the feeding and discharging of the mixing drum, the filling rate of the mixing drum 1 is increased from 65% to more than 85%, and it can also climb a 14% slope equivalent to 8 degrees to ensure that there is no leakage, and there is no leakage failure point.

[0051] Embodiment 2:

[0052] Reference Figures 3-5 As shown in FIG. 1 , the present embodiment further includes a feed cabin 2 , which is disposed in the feed area 621 , and a cabin wall of the feed cabin 2 is in contact with the bottom of the spiral blade 6 .

[0053] It should be noted that the feed chamber 2 is used for the loading and unloading of materials, and the materials include but are not limited to concrete. As a preferred embodiment of the present embodiment, the partition chamber 3 is made of a cone. Of course, it is not difficult to understand that it can be a cone but is not limited to a cone. For example, it can also be a polygon or a cylinder, etc., all shapes that can be welded to the mixing blades. At the same time, the structure of the feed chamber 2 includes but is not limited to the setting of the inclination angle of the opening surface. A blade that is reduced in proportion to the spiral blade 6 can also be added inside it, or the opening surface of the feed chamber 2 can be changed to other shapes, and the feed chamber 2 can be changed from a truncated cone to a cylindrical shape, etc.

[0054] The line connecting the top edge contour lines of the feed chamber 2 and the partition chamber 3 can be a straight line. When it is a straight line, the loading capacity of the mixing drum 1 is the maximum. At this time, the line is collinear with the highest point of the right side port of the feed chamber 2, and is also collinear with the highest material filling line p. This embodiment should include but is not limited to a straight line, for example, the heights of the feed chamber 2 and the partition chamber 3 are different, the feed chamber 2 is higher than the partition chamber 3, or the partition chamber 3 is higher than the feed chamber 2.

[0055] On the basis of Example 1, when the material enters the feed chamber 2 from the discharge port 5 and rotates downward with the mixing drum 1, the material enters the pitch of the mixing blades and continues to rotate with the mixing drum 1. The material is pushed into the mixing drum 1. In the process, the design of the outlet of the feed chamber 2 can speed up the feeding speed, which can prevent the reduction of the feeding efficiency of the mixing drum, thereby reducing the loading time and increasing the overall work efficiency. That is, under the same time and the same loading amount, only fewer mixer trucks need to be used, saving costs.

[0056] Embodiment 3:

[0057] Reference Figures 1 to 4 As shown in the figure, the top edge of the spiral blade 6 in this embodiment is in contact with the inner wall of the mixing drum 1 and is closed, and the bottom of the spiral blade 6 is in contact with the outer surface of the material isolation chamber 3, and a plurality of exhaust holes 7 are provided on the surface of the spiral blade 6.

[0058] It should be noted that, for the setting of the spiral blades 6 in this embodiment, based on the above embodiment, the best implementation method is: when the line connecting the top edge contour lines of the feed chamber 2 and the partition chamber 3 is a straight line, the loading capacity of the mixing drum 1 is the maximum. At this time, the connecting line is collinear with the highest point of the discharge port 5, and is also collinear with the highest material filling line p.

[0059] It is not difficult for those skilled in the art to understand that if part of the loading capacity of the mixing drum 1 is discarded, that is, if the heights of the docking ends of the feed chamber 2 and the partition chamber 3 are not equal, the spiral blades 6 should also be adapted to the heights of the outer walls of the feed chamber 2 and the partition chamber 3, and be fitted together. In this state, the heights of the spiral blades 6 on the left and right sides are not equal. Although the loading effect is not optimal, a spiral space m can also be formed for the flow of material, thereby achieving the actual effect of the material filling line p proposed in this embodiment being higher than the lowest point g of the right side port of the feed chamber 2, which is also better than the existing actual effect.

[0060] Based on Example 1, the material enters the interior of the mixing drum 1 as the spiral blades 6 rotate. During this process, a pressure difference may be generated between the spiral blades 6 and the material, causing the material to be adsorbed on the spiral blades 6. The balance of the air pressure inside the mixing drum 1 is ensured by means of the multiple exhaust holes 7 provided on the spiral blades 6.

[0061] Embodiment 4:

[0062] Reference Figures 1 to 4 As shown in the figure, a plurality of guide holes 8 are provided on the surfaces of the partition chamber 3 and the inner partition plate 4. The guide holes 8 on the partition chamber 3 are arranged linearly, and the guide holes 8 on the inner partition plate 4 are arranged circularly.

[0063] Based on Example 1, since the material cannot leak out along the original route and is blocked by the inner partition 4, the internal space is gradually filled with the material. At this time, the top material is diverted to the bottom through the multiple diversion holes 8 on the surface of the partition chamber 3 and the inner partition 4, allowing the material to enter the stirring cycle, reducing the risk of radial segregation.

[0064] The present invention is described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention; or the above-mentioned concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A large-capacity mixing drum, comprising a mixing drum (1), characterized in that: Also includes, A discharge port (5), wherein the discharge port (5) is opened on one side of the mixing drum (1); A spiral blade (6), the spiral blade (6) comprising a driving area (61) and a material area (62), the driving area (61) being formed between adjacent spiral blades (6), and the material area (62) being in communication with the discharge port (5); a material isolation chamber (3), the material isolation chamber (3) being arranged inside the material area (62) and dividing the material area (62) into a feed area (621) and a barrier area (622), the feed area (621) being close to one side of the discharge port (5); An inner baffle (4), the inner baffle (4) being arranged on one side of the material separation chamber (3) and close to the material feeding area (621); It also comprises a feed cabin (2), the feed cabin (2) being arranged in the feed area (621), and the cabin wall of the feed cabin (2) being in contact with the bottom of the spiral blade (6); An oblique cut (21) is provided on a side of the feed chamber (2) close to the partition chamber (3), and the oblique cut (21) is used to connect the drive area (61) and the feed area (621).

2. A large-capacity mixing drum according to claim 1, characterized in that: The top edge of the spiral blade (6) is in contact with the inner wall of the mixing drum (1) and is sealed, and the bottom of the spiral blade (6) is in contact with the outer surface of the material isolation chamber (3).

3. A large-capacity mixing drum according to claim 2, characterized in that: A plurality of exhaust holes (7) are provided on the surface of the spiral blade (6).

4. A large-capacity mixing drum according to claim 1, characterized in that: The surfaces of the material separation chamber (3) and the inner partition plate (4) are both provided with a plurality of flow guide holes (8).

5. A large-capacity mixing drum according to claim 1, characterized in that: The material filling line (p) in the mixing drum (1) is higher than the lowest point (g) of the right side port of the feed chamber (2).

6. A large-capacity mixing drum according to claim 5, characterized in that: The adjacent spiral blades (6) are used as side surfaces, the outer walls of the feed chamber (2) and the partition chamber (3) are used as bottom surfaces, and the inner wall of the mixing drum (1) is used as the top surface to form a spiral space (m), and the feed area (621) is connected to the spiral space (m) through the oblique cut (21).

7. A large-capacity mixing drum according to claim 1, characterized in that: The circular cross-section of the material separation chamber (3), the opening surface of the material discharge port (5) and the plate surface of the inner partition plate (4) are arranged parallel to each other.

8. A method for using a large-capacity mixing drum according to any one of claims 1 to 7, characterized in that: The following steps are included: Step S1, start the mixing drum (1) and rotate it, and then pour the material into the feed chamber (2) from the discharge port (5) of the mixing drum (1); Step S2, the material is blocked by the inner baffle (4) in the feed chamber (2), enters the spiral space (m) through the oblique cut (21), and flows into the next spiral space (m) as the mixing drum (1) rotates; Step S3, the material flows from the spiral space (m) into the interior of the mixing drum (1), gradually filling up the material compartment (3), i.e. gradually filling the mixing drum (1); In step S4, the material in the material isolation chamber (3) that has a tendency to move toward the feed area (621) is blocked by the inner partition (4). When the material fills the mixing drum (1), the material filling line (p) is higher than the lowest point (g) of the right side port of the feed chamber (2).

Images