Concrete mixing device capable of preventing sedimentation layering

Abstract

The utility model discloses an anti-settling layering concrete mixing device which comprises a vertically arranged mixing drum, a passive flow guide mechanism is detachably connected to the position, close to the lower portion of the mixing drum, in the mixing drum, and an active flow guide mechanism is arranged above the passive flow guide mechanism. The active flow guide mechanism and the passive flow guide mechanism are coaxially and rotatably connected together, the upper end of the active flow guide mechanism is coaxially connected with the mounting shaft, the upper end of the mounting shaft extends out of the mixing drum along the axis of the mixing drum, and an output shaft of a driving motor mounted on the assembly seat is coaxially connected with the upper end of the mounting shaft. According to the utility model, the self-compacting concrete is continuously stirred, so that the layering condition of the self-compacting concrete is avoided, the coarse aggregate is prevented from sinking, and the engineering quality of the self-compacting concrete after being poured and formed is ensured. The device is suitable for the technical field of preventing settlement and layering in concrete preparation.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of concrete preparation equipment, specifically relates to a concrete mixing device of anti-settling stratification. BACKGROUND

[0002] At present, in the preparation process of self-compacting concrete, cement, sand and water need to be mixed through a mixing device, and self-compacting concrete is formed. Especially in the construction of intercity railways, long-time correction work is often frequently encountered, that is, when the track slab is laid, the track slab deviation is not easy to adjust, in order to ensure that the precision reaches the predetermined range, and then a very long time is needed for accurate alignment, and then the self-compacting concrete pouring work is carried out. Since the self-compacting concrete is prepared in advance, under the condition of long-time standing, the self-compacting concrete will cause stratification problem, thereby affecting the quality of construction. Therefore, the self-compacting concrete needs to be continuously stirred, but in the stirring process, the hopper cannot stir the self-compacting concrete, thereby the coarse aggregate sinking problem cannot be solved. SUMMARY

[0003] The utility model provides a concrete mixing device of anti-settling stratification to continuously stir the self-compacting concrete, avoid the stratification of the self-compacting concrete, prevent the sinking of the coarse aggregate, and ensure the engineering quality of the self-compacting concrete after pouring and forming.

[0004] To achieve the above-mentioned purpose, the technical scheme adopted by the utility model is as follows:

[0005] A concrete mixing device of anti-settling stratification, comprising a vertically arranged stirring drum, a passive flow guide mechanism is detachably connected in the stirring drum and close to the lower part of the stirring drum, an active flow guide mechanism is arranged above the passive flow guide mechanism, the active flow guide mechanism and the passive flow guide mechanism are coaxially connected together, and the upper end of the active flow guide mechanism is coaxially connected with the mounting shaft, the upper end of the mounting shaft extends out of the stirring drum along the axis of the stirring drum, and the output shaft of the driving motor mounted on the assembly seat is coaxially connected with the upper end of the mounting shaft.

[0006] Further, the passive flow guide mechanism comprises a lower material guide cover in the shape of a conical shell, the caliber of the lower material guide cover gradually expands upward along the vertical direction, a plurality of first material guide channels are uniformly arranged on the circumferential surface of the lower material guide cover along the circumferential direction, a connecting ring is arranged at the large diameter end of the lower material guide cover, and the connecting ring is fixedly connected with the stirring drum through a plurality of fixing bolts.

[0007] Further, the active flow guide mechanism comprises a conical shell-shaped upper material guide cover, the caliber of the upper material guide cover gradually expands downward along the vertical direction, a plurality of second material guide channels are uniformly arranged on the circumferential surface of the upper material guide cover along the circumferential direction, and a connecting sleeve is arranged at the small-diameter end of the upper material guide cover, and the connecting sleeve is fixedly connected with the mounting shaft through at least one connecting bolt.

[0008] Further, the horizontal component of the rotational flow direction of the first material guide channel is opposite to the horizontal component of the rotational flow direction of the second material guide channel.

[0009] Further, an elastic telescopic rod is arranged between the passive flow guide mechanism and the active flow guide mechanism, the upper end of the elastic telescopic rod is rotationally connected with the lower end of the mounting shaft, and the lower end of the elastic telescopic rod is fixedly connected with the center of the passive flow guide mechanism.

[0010] Further, an elastic coupling member is connected with the output shaft of the driving motor, and the lower end of the elastic coupling member is fixedly connected with the upper end of the mounting shaft.

[0011] Further, the elastic coupling member comprises a plurality of connecting belts, the connecting belts are uniformly arranged along the circumferential direction of the mounting shaft, and the two ends of each connecting belt are respectively fixedly connected with the mounting shaft and the output shaft of the driving motor.

[0012] Further, a through channel is formed in the mounting shaft, the lower end of the through channel extends into the active flow guide mechanism, a plurality of water injection holes are arranged on the mounting shaft and located in the active flow guide mechanism, the water injection holes are in communication with the through channel, a water inlet sleeve is rotationally sleeved on the mounting shaft, the water inlet sleeve is in communication with the upper end of the through channel, a water inlet pipe is arranged on the water inlet sleeve, a guide hole extending along the vertical direction is arranged on the assembly seat, and the water inlet pipe passes through the assembly seat through the guide hole.

[0013] Further, a splash-proof cover coaxial with the axis of the stirring drum is detachably connected with the upper end of the stirring drum, the splash-proof cover is in a horn-shaped structure, the large-diameter end of the splash-proof cover is detachably connected with the upper end of the stirring drum, the small-diameter end extends upward, and a feeding port is formed at the port of the small-diameter end of the splash-proof cover.

[0014] Further, a discharge cover coaxial with the axis of the stirring drum is detachably connected with the lower end of the stirring drum, the large-diameter end of the discharge cover is detachably connected with the lower end of the stirring drum, the small-diameter end extends downward, and a discharge pipe is arranged at the port of the small-diameter end of the discharge cover.

[0015] The utility model discloses a structure, and compared with the prior art, the technical progress that has obtained lies in: the utility model discloses can prepare self -compacting concrete in the stirring drum, also can inject the self -compacting concrete that has prepared to complete to the stirring drum, in order to avoid the settlement layering of self -compacting concrete, through control drive motor action, make it through the installation shaft and drive the positive flow guide mechanism forward or reverse rotation. The positive flow guide mechanism in the process of forward rotation, it will the self -compacting concrete cyclone supply of stirring drum upper portion to passive flow guide mechanism, and this part of self -compacting concrete is through passive flow guide mechanism cyclone and pours outside, then gradually by the lower part of stirring drum and pours to the upper portion of stirring drum, and then forms circulation, the positive flow guide mechanism in the process of reverse rotation, it carries out cyclone and leads to the self -compacting concrete of below, like this, the self -compacting concrete of passive flow guide mechanism place is also introduced and flows and is cyclone to the positive flow guide mechanism through passive flow guide mechanism, and then makes the self -compacting concrete in the positive flow guide mechanism outward and pours and gradually moves downward, until moving to passive flow guide mechanism, and then forms circulation. From the above, the utility model discloses through the unceasingly mixing of self -compacting concrete, avoids the stratification of self -compacting concrete, prevents the coarse aggregate subsidence, ensures the engineering quality of self -compacting concrete's perfusion forming. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings are included to provide a further understanding of the utility model, and constitute a part of the specification, and are used to explain the utility model together with embodiments of the utility model, and do not constitute the limitation to the utility model.

[0017] In the drawings:

[0018] Figure 1 It is the structural schematic diagram of the embodiment of the utility model;

[0019] Figure 2 It is the structural schematic diagram of another angle of the embodiment of the utility model;

[0020] Figure 3 It is the structural perspective view of the embodiment of the utility model;

[0021] Figure 4 It is the partial structural section view of the embodiment of the utility model;

[0022] Figure 5 It is the structural schematic diagram of the installation shaft and passive flow guide mechanism connection of the embodiment of the utility model;

[0023] Figure 6 It is the structural schematic diagram of the positive flow guide mechanism of the embodiment of the utility model.

[0024] Labeling components: 1 - mixing drum, 2 - discharge cover, 3 - discharge pipe, 4 - splash guard, 5 - lower guide cover, 6 - first guide channel, 7 - connecting ring, 8 - connecting pipe, 9 - connecting rod, 10 - mounting shaft, 11 - guide channel, 12 - water injection hole, 13 - rotating joint, 14 - upper guide cover, 15 - second guide channel, 16 - connecting sleeve, 17 - guide hole, 18 - water inlet sleeve, 19 - water inlet pipe, 20 - assembly seat, 21 - guide hole, 22 - drive motor, 23 - elastic coupling, 24 - connecting joint. DETAILED DESCRIPTION

[0025] The preferred embodiments of the utility model are described below in combination with the drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the utility model, and are not used to limit the utility model.

[0026] The utility model discloses a kind of anti-settling layered concrete mixing devices, such as Figures 1-6As shown, including stirring drum 1, passive flow guide mechanism, active flow guide mechanism, mounting shaft 10 and drive motor 22. Wherein, the stirring drum 1 is vertically arranged, and a plurality of support legs (not shown in the figure) are uniformly fixed on the outer circumferential surface of the stirring drum 1 along the circumferential direction thereof, which are supported on the ground. The passive flow guide mechanism and the active flow guide mechanism of the utility model are arranged in the stirring drum 1, the passive flow guide mechanism is detachably connected at the lower part of the stirring drum 1, the active flow guide mechanism is arranged above the passive flow guide mechanism, the active flow guide mechanism and the passive flow guide mechanism are coaxially connected together, and the upper end of the active flow guide mechanism is coaxially connected with the mounting shaft 10. The upper end of the mounting shaft 10 of the utility model extends out of the stirring drum 1 along the axis of the stirring drum 1, the drive motor 22 is installed on the assembly seat 20, the assembly seat 20 is installed at the upper end of the stirring drum 1, and the output shaft of the drive motor 22 is coaxially connected with the upper end of the mounting shaft 10. The working principle and advantages of the utility model are as follows: the utility model can prepare self-compacting concrete in the stirring drum 1, and can also inject the self-compacting concrete prepared into the stirring drum 1; in order to avoid the settlement and stratification of the self-compacting concrete, the drive motor 22 is controlled to drive the active flow guide mechanism to rotate forward or reversely through the mounting shaft 10. In the process of forward rotation of the active flow guide mechanism, the self-compacting concrete at the upper part of the stirring drum 1 is supplied to the passive flow guide mechanism in cyclone, and the self-compacting concrete is turned over outward by the passive flow guide mechanism, and then gradually turned over from the lower part of the stirring drum 1 to the upper part of the stirring drum 1, thereby forming a cycle; in the process of reverse rotation of the active flow guide mechanism, the self-compacting concrete located below is introduced in cyclone, so that the self-compacting concrete at the passive flow guide mechanism is also introduced and flows through the passive flow guide mechanism and cyclone to the active flow guide mechanism, thereby making the self-compacting concrete turn over outward and move downward in the active flow guide mechanism, until moving to the passive flow guide mechanism, thereby forming a cycle. As can be seen from the above, the utility model continuously stirs the self-compacting concrete, avoids the stratification of the self-compacting concrete, prevents the sinking of coarse aggregate, and ensures the engineering quality after the self-compacting concrete is poured and formed.

[0027] As a preferred embodiment of the utility model, as Figure 6As shown in the figure, the active flow guide mechanism comprises a conical shell-shaped upper material guide cover 14, the caliber of the upper material guide cover 14 is gradually expanded downward in the vertical direction, a plurality of second material guide channels 15 are uniformly arranged on the circumferential surface of the upper material guide cover 14 in the circumferential direction, and a connecting sleeve 16 is arranged at the small-diameter end of the upper material guide cover 14, which is fixedly connected with the mounting shaft 10 through at least one connecting bolt. The working principle and advantages of the embodiment are that the upper material guide cover 14 of the embodiment rotates forward or reversely with the mounting shaft 10, so that the self-compacting concrete in the mixing drum 1 rotates downward or upward through the second material guide channel 15, which plays a role of stirring on one hand and achieves the role of vertical flow guide on the other hand, so as to realize the purpose of full-range stirring and disturbance of the self-compacting concrete in the mixing drum 1.

[0028] As a preferred embodiment of the utility model, as shown in the figure, Figure 5 As shown in the figure, the passive flow guide mechanism comprises a conical shell-shaped lower material guide cover 5, the caliber of the lower material guide cover 5 is gradually expanded upward in the vertical direction, a plurality of first material guide channels 6 are uniformly arranged on the circumferential surface of the lower material guide cover 5 in the circumferential direction, and a connecting ring 7 is arranged at the large-diameter end of the lower material guide cover 5, which is fixedly connected with the mixing drum 1 through a plurality of fixing bolts. The working principle and advantages of the embodiment are that when the active flow guide mechanism rotates, it performs vertical flow guide on the self-compacting concrete in the mixing drum 1, so that the self-compacting concrete near the lower material guide cover 5 is driven and then spreads outward or gathers inward along the vertical direction in the form of rotational flow through the first material guide channel 6.

[0029] As a preferred embodiment of the utility model, the horizontal component rotational flow direction of the rotational flow direction of the first material guide channel 6 is opposite to the horizontal component rotational flow direction of the rotational flow direction of the second material guide channel 15. In this way, the rotational flow directions of the self-compacting concrete passing through the first material guide channel 6 and the second material guide channel 15 are opposite, and the self-compacting concrete between the passive flow guide mechanism and the active flow guide mechanism moves violently in the process of twisting the rotational direction, so as to improve the disturbance intensity.

[0030] As a preferred embodiment of the utility model, as shown in the figure, Figures 3-5As shown, the elastic telescopic rod is arranged between the passive flow guide mechanism and the active flow guide mechanism, wherein the elastic telescopic rod comprises a connecting pipe 8, a connecting rod 9 and a connecting spring, the lower end of the connecting pipe 8 is fixedly connected with the central part of the lower material guide cover 5, the lower end of the connecting rod 9 is movably inserted into the connecting pipe 8 from the upper end of the connecting pipe 8, the connecting spring is arranged in the connecting pipe 8, and the two ends of the connecting spring are fixedly connected with the connecting pipe 8 and the connecting rod 9 respectively. The lower end of the mounting shaft 10 is provided with a rotary joint 13, and the upper end of the connecting rod 9 is rotatably connected with the rotary joint 13. The elastic coupling 23 is connected with the output shaft of the driving motor 22, and the lower end of the elastic coupling 23 is fixedly connected with the upper end of the mounting shaft 10. The specific structure of the elastic coupling 23 is that the elastic coupling 23 comprises a plurality of connecting belts, the connecting belts are uniformly arranged along the circumference of the mounting shaft 10, and the two ends of each connecting belt are fixedly connected with the mounting shaft 10 and the output shaft of the driving motor 22 respectively. The working principle and advantages of the embodiment are that when the driving motor 22 is controlled to intermittently rotate in the positive and negative directions, the plurality of connecting belts of the elastic coupling 23 are gradually wound or unwound from the wound state when the output shaft of the driving motor 22 drives the mounting shaft 10 to rotate through the elastic coupling 23, so that the elastic coupling 23 is gradually shortened or lengthened, and the mounting shaft 10 and the active flow guide mechanism are driven to move along the vertical direction, so that the self-compacting concrete in the stirring drum 1 is fully stirred. Moreover, when the mounting shaft 10 and the active flow guide mechanism move along the vertical direction, the elastic telescopic rod is elastically telescopic, so as to provide kinetic energy for the return of the active flow guide mechanism.

[0031] As a preferred embodiment of the utility model, as Figure 4 、 5As shown, a water guide channel 11 is formed in the mounting shaft 10, and the lower end of the water guide channel 11 extends into the active water guide mechanism. A plurality of water injection holes 12 are formed on the mounting shaft 10 and in the active water guide mechanism, and the water injection holes 12 are in communication with the water guide channel 11. In this embodiment, a water inlet sleeve 18 is rotatably sleeved on the mounting shaft 10, the upper end of the water guide channel 11 is in communication with the water inlet sleeve 18 through a water guide hole 17 formed on the mounting shaft 10, a water inlet pipe 19 is arranged on the water inlet sleeve 18, and a connecting joint 24 is arranged at the end of the water inlet pipe 19 away from the water inlet sleeve 18, and the connecting joint 24 is in communication with the pressure water pump through a rubber hose. In this embodiment, a guide hole 21 extending in the vertical direction is formed on the assembly seat 20, and the water inlet pipe 19 passes through the assembly seat 20 through the guide hole 21. The working principle and advantages of this embodiment are as follows: when self-compacting concrete is prepared in the mixing drum 1, or the prepared self-compacting concrete is humidified, water in the water storage bucket can be pumped into the water guide channel 11 of the mounting shaft 10 by the pressure water pump, and then jetted out through the water injection holes 12. Since the material passing through the active water guide mechanism is in the form of a spiral flow, the material and water are quickly and fully mixed. When the mixing drum 1 is cleaned subsequently, the pressure water can be injected into the mixing drum 1 through the water injection holes 12, so that the self-compacting concrete on the inner wall of the mixing drum 1 is quickly separated.

[0032] As a preferred embodiment of the present application, Figures 1-4 As shown, in order to prevent the self-compacting concrete from being splashed out of the upper end of the mixing drum 1 during stirring, a splash-proof cover 4 is detachably connected to the upper end of the mixing drum 1, the splash-proof cover 4 is coaxial with the axis of the mixing drum 1, the splash-proof cover 4 has a horn-shaped structure, the large-diameter end of the splash-proof cover 4 is detachably connected to the upper end of the mixing drum 1, the small-diameter end extends upward, and a feeding port is formed at the port of the small-diameter end of the splash-proof cover 4, which is used for feeding different materials into the mixing drum 1. In order to facilitate the rapid discharge of self-compacting concrete, a discharge cover 2 is detachably connected to the lower end of the mixing drum 1, the discharge cover 2 is coaxial with the axis of the mixing drum 1, the large-diameter end of the discharge cover 2 is detachably connected to the lower end of the mixing drum 1, the small-diameter end extends downward, and a discharge pipe 3 is arranged at the port of the small-diameter end of the discharge cover 2, which is used for discharging the discharge pipe 3.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application 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 replacements to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the claims of the present application.

Claims

1. A concrete mixing device for preventing settlement and stratification, characterized in that: The device includes a vertically arranged stirring drum. A passive flow guiding mechanism is detachably connected inside the stirring drum and near its lower part. An active flow guiding mechanism is arranged above the passive flow guiding mechanism. The active flow guiding mechanism and the passive flow guiding mechanism are coaxially rotatably connected together. The upper end of the active flow guiding mechanism is coaxially connected to a mounting shaft. The upper end of the mounting shaft extends out of the stirring drum along its axis. The output shaft of a drive motor mounted on a mounting base is coaxially connected to the upper end of the mounting shaft.

2. The concrete mixing device for preventing settlement and stratification according to claim 1, characterized in that: The passive flow guiding mechanism includes a conical shell-shaped lower guide hood with an opening that gradually widens vertically upwards. Multiple first guide channels are evenly provided on the circumferential surface of the lower guide hood. A connecting ring is constructed at the large-diameter end of the lower guide hood, and the connecting ring is fixedly connected to the stirring cylinder by multiple fixing bolts.

3. The concrete mixing device for preventing settlement and stratification according to claim 2, characterized in that: The active flow guiding mechanism includes a conical shell-shaped upper material guide cover. The diameter of the upper material guide cover gradually expands downward in the vertical direction. Multiple second material guide channels are evenly opened on the circumferential surface of the upper material guide cover. A connecting sleeve is constructed at the small diameter end of the upper material guide cover. The connecting sleeve is fixedly connected to the mounting shaft by at least one connecting bolt.

4. The concrete mixing device for preventing settlement and stratification according to claim 3, characterized in that: The horizontal swirling direction of the first material guiding channel is opposite to the horizontal swirling direction of the second material guiding channel.

5. A concrete mixing device for preventing settlement and stratification according to claim 1, characterized in that: An elastic telescopic rod is provided between the passive flow guiding mechanism and the active flow guiding mechanism. The upper end of the elastic telescopic rod is rotatably connected to the lower end of the mounting shaft, and the lower end of the elastic telescopic rod is fixedly connected to the center of the passive flow guiding mechanism.

6. A concrete mixing device for preventing settlement and stratification according to claim 5, characterized in that: An elastic coupling is connected to the output shaft of the drive motor, and the lower end of the elastic coupling is fixedly connected to the upper end of the mounting shaft.

7. A concrete mixing device for preventing settlement and stratification according to claim 6, characterized in that: The flexible coupling includes multiple connecting belts, which are evenly arranged along the circumference of the mounting shaft, and both ends of each connecting belt are respectively connected and fixed to the mounting shaft and the output shaft of the drive motor.

8. A concrete mixing device for preventing settlement and stratification according to claim 1, characterized in that: A guiding channel is formed within the mounting shaft, the lower end of which extends into the active flow guiding mechanism. Multiple water injection holes are provided on the mounting shaft and at the location within the active flow guiding mechanism, all of which are connected to the guiding channel. A water inlet sleeve is rotatably fitted outside the mounting shaft, and the water inlet sleeve is connected to the upper end of the guiding channel. A water inlet pipe is constructed on the water inlet sleeve, and a guide hole extending vertically is provided on the mounting base. The water inlet pipe passes through the guide hole and into the mounting base.

9. A concrete mixing device for preventing settlement and stratification according to claim 1, characterized in that: A splash guard is detachably connected to the upper end of the mixing drum and is aligned with its axis. The splash guard has a horn-shaped structure. The large-diameter end of the splash guard is detachably connected to the upper end of the mixing drum, and the small-diameter end extends upward, forming a feed inlet at the port of the small-diameter end of the splash guard.

10. A concrete mixing device for preventing settlement and stratification according to claim 1, characterized in that: A discharge hood that coincides with the axis of the mixing drum is detachably connected to the lower end of the mixing drum. The large-diameter end of the discharge hood is detachably connected to the lower end of the mixing drum, the small-diameter end extends downward, and a discharge pipe is constructed at the port of the small-diameter end of the discharge hood.

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