Gravel stirring equipment

Abstract

The invention discloses gravel stirring equipment and belongs to the technical field of stirring equipment.The gravel stirring equipment comprises a supporting table and a stirrer, according to the scheme, an outer machining frame and an inner machining frame are driven to conduct stable reverse rotation and stacked regular up-and-down reciprocating motion, and a rubbing and shearing composite acting force field is formed; and in order to ensure the integrity of the aggregate, the extrusion blocks embedded in the inner wall of the outer processing frame are connected through the dampers, effective extrusion force can be provided during stripping, and the extrusion blocks retract to unload force when the pressure exceeds the limit, so that the aggregate is actively prevented from being crushed. Besides, the inner processing frame is designed to be an integrated heat exchanger with a built-in liquid storage cavity, waste heat generated in the friction process can be directly recycled to preheat stirring liquid, the preheated stirring liquid is directly used for the follow-up stirring procedure, cyclic utilization of energy in the system is achieved, and the overall energy efficiency is remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of mixing equipment technology, and in particular to a sand and gravel mixing equipment. Background Technology

[0002] In the field of construction waste recycling, using recycled aggregates (mainly stones with cement mortar adhering to their surfaces) to prepare concrete through sand and gravel mixing equipment is a key path to achieve waste reduction and substitution of natural resources. However, the adhering substances on the surface of recycled stones can seriously affect the performance of concrete. Therefore, before entering the sand and gravel mixing equipment for mixing, they must undergo efficient cleaning treatment in advance. This is an indispensable core step to ensure the quality of the final concrete.

[0003] Currently, standard aggregate mixing equipment lacks the capability for effective pre-treatment of recycled aggregates. Conventional processes require additional specialized equipment (such as friction washers) to first strip the aggregates before transferring them to separate aggregate mixing equipment. This separate operation mode has significant drawbacks: First, it is costly, requiring additional investment in pre-treatment equipment, increasing material transfer processes, and occupying more plant space, thus raising overall production costs. Second, the pre-treatment effect and energy efficiency are unsatisfactory. Existing methods such as friction washers often suffer from incomplete stripping and damage to aggregate integrity. This is mainly because such equipment often uses unidirectional friction or collision, resulting in a simple force pattern that is difficult to produce sufficient and uniform shearing and stripping effects on firmly attached and unevenly coated cement mortar layers. Furthermore, the lack of real-time monitoring and flexible adjustment mechanisms for the force can easily lead to excessive local pressure when processing aggregates of different sizes and shapes, causing excessive wear or even breakage of the aggregates themselves, failing to achieve a good balance between efficient stripping of adhering materials and protection of aggregate integrity.

[0004] Therefore, there is an urgent need to develop a new type of sand and gravel mixing equipment that integrates efficient pretreatment and mixing and can directly process recycled stones. Summary of the Invention

[0005] This invention provides a sand and gravel mixing device that can solve the problems of existing mixing devices being unable to effectively handle the surface deposits of recycled aggregates, relying instead on high-cost segmented pretreatment methods, while traditional cleaning methods have poor peeling effects and are prone to damaging aggregates, as well as high energy consumption throughout the process.

[0006] A sand and gravel mixing device includes: a support platform and a mixer. A support frame is mounted on the top of the support platform, and a support base plate is mounted on the top of the support frame. A processing component is mounted on the support base plate. The processing component includes a feeding frame, an outer processing frame, and an inner processing frame. The inner processing frame is located inside the outer processing frame, and the inner and outer processing frames are arranged in parallel. A reciprocating mechanism is provided at the bottom of the outer processing frame, and a pressing mechanism is provided on the inner wall of the outer processing frame. The feeding frame is used to transport construction waste into the cavity formed by the outer and inner processing frames. A driving mechanism is provided on the top of the support base plate. The driving mechanism, in conjunction with the reciprocating mechanism, enables the outer and inner processing frames to rotate in opposite directions while the outer processing frame can also move up and down reciprocally, thereby processing the construction waste. The mixer is equipped with a mixing mechanism for mixing the processed construction waste.

[0007] Preferably, the drive mechanism includes an externally machined gear and an internally machined gear, both of which are rotatably connected to the support base plate. Multiple drive motors are arranged between the externally machined gear and the internally machined gear, and transmission gears are installed at the output ends of the drive motors. All transmission gears are meshed with the externally machined gear and the internally machined gear.

[0008] Preferably, the drive mechanism further includes a plurality of first telescopic transmission couplings mounted on the top of the externally machined gear, the top of the plurality of first telescopic transmission couplings being equipped with an outer ring, the top of the outer ring being equipped with a plurality of evenly distributed second telescopic transmission couplings, and the inner wall of the outer ring being equipped with a plurality of extension blocks, the extension blocks being connected to the externally machined frame. Preferably, the supporting base plate is surrounded by a plurality of evenly distributed supporting rods, and a supporting top plate is installed at one end of the top side of the supporting rods. A limiting groove is formed on the supporting top plate, and the limiting groove is slidably connected to the second telescopic transmission coupling.

[0009] Preferably, the extrusion mechanism includes a plurality of extrusion blocks embedded in the inner wall of the outer processing frame, the extrusion blocks being connected to the inner wall of the outer processing frame via dampers.

[0010] Preferably, the top of the internally machined gear is connected to an inner ring via a third telescopic transmission coupling. The inner ring is connected to the internally machined frame via a fixing rod. The internally machined frame has a storage cavity containing a stirring liquid, and an electric valve is installed on the internally machined frame. Preferably, a feeding frustum is installed at the bottom of the feeding frame, and multiple feeding connecting rods are installed on the feeding frustum. Feeding pipes communicating with the feeding frame are installed on the feeding connecting rods, and one end of the feeding connecting rod is connected to the supporting top plate. A hydraulic cylinder is installed at the bottom of the feeding frustum, and the output end of the hydraulic cylinder is connected to the top of the inner processing frame through a bearing.

[0011] Preferably, the reciprocating mechanism includes a reciprocating ring disposed on the lower side of the outer processing frame, and the reciprocating ring is fixedly connected to the support frame.

[0012] Preferably, the reciprocating mechanism further includes a plurality of support legs mounted on the bottom end of the outer processing frame, and rollers mounted on the bottom end of the support legs, the rollers abutting against the inner wall of the reciprocating ring.

[0013] Preferably, the shape corresponding to the inner wall of the reciprocating ring is set to an annular wave shape.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) This solution achieves stable reverse rotation by driving the outer processing frame and the inner processing frame to be set in parallel and coaxial, creating a high-speed shearing field. At the same time, the outer processing frame is given regular up-and-down reciprocating motion by the support legs and the ring-shaped wave-shaped reciprocating ring. This composite motion makes the recycled stone blocks in the cavity not only subject to circumferential friction, but also to axial dynamic kneading, thereby forming multi-angle, high-strength and uniform shearing and impact on the attached cement mortar layer, breaking through the limitations of traditional single-directional friction, and achieving efficient and uniform peeling.

[0015] (2) In this scheme, the extrusion block is elastically connected to the inner wall of the outer processing frame through a damper. When the outer processing frame moves down and the cavity gap decreases, the extrusion block applies pressure to the stone group. Under normal pressure, the mechanism remains rigid to provide effective extrusion force. Once the local pressure exceeds the limit and may damage the aggregate, the damper allows the extrusion block to retract and relieve the force, realizing real-time adjustment and hard limit of the force. While pursuing efficient stripping, it actively avoids the risk of excessive wear and breakage of the stones, ensuring the quality of the final aggregate.

[0016] (3) This solution realizes the self-circulation of energy in the production process. The inner processing frame is designed as a structural unit that also serves as a large heat exchanger. The storage cavity inside is directly integrated with the friction working surface, so that a large amount of frictional waste heat generated during the stripping process can be quickly absorbed and stored by the stirring liquid in the cavity through the shortest path. The preheated stirring liquid can be directly used for subsequent stirring processes, thus completing the transformation from an energy-consuming link to an energy-supplying unit at the equipment structure level, significantly improving the overall energy utilization efficiency of the entire system. Attached Figure Description

[0017] Figure 1 A three-dimensional structural diagram of the sand and gravel mixing equipment provided by the present invention; Figure 2 This is a three-dimensional structural diagram of the support platform and processing components provided by the present invention; Figure 3 A three-dimensional structural diagram of the outer processing frame and the inner processing frame provided by the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the feed frame provided by the present invention; Figure 5 This is a schematic diagram of the bottom structure of the feed frame provided by the present invention; Figure 6 A schematic diagram of the first telescopic transmission connector and the second telescopic transmission connector provided by the present invention; Figure 7 This is a schematic diagram of the reciprocating ring structure provided by the present invention; Figure 8 This is a schematic diagram of the feeding frustum structure provided by the present invention; Figure 9 Schematic diagram of the three-dimensional structure of the externally machined gear and the internally machined gear provided by the present invention; Figure 10 This is a schematic diagram of the three-dimensional structure of the support leg provided by the present invention.

[0018] Explanation of reference numerals in the attached figures: 1. Mixer; 2. Support platform; 3. Processing components; 4. Feed frame; 5. Outer processing frame; 6. Inner processing frame; 21. Support frame; 22. Support base plate; 41. Support top plate; 42. Feed connecting rod; 43. Feed pipe; 44. Support connecting rod; 45. Feed frustum; 51. Outer processing gear; 52. First telescopic transmission coupling; 53. Outer connecting ring; 54. Second telescopic transmission coupling; 55. Extension block; 56. Support leg; 57. Reciprocating ring; 61. Inner processing gear; 62. Inner connecting ring. Detailed Implementation

[0019] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0020] like Figures 1 to 3 As shown in the figure, an embodiment of the present invention provides a sand and gravel mixing device, including: a support platform 2 and a mixer 1. A support frame 21 is installed on the top of the support platform 2, and a support base plate 22 is installed on the top of the support frame 21. A processing component 3 is provided on the support base plate 22. The processing component 3 is provided with a feeding frame 4, an outer processing frame 5, and an inner processing frame 6. The inner processing frame 6 is located inside the outer processing frame 5, and the inner processing frame 6 and the outer processing frame 5 are arranged in parallel. A reciprocating mechanism is provided at the bottom of the outer processing frame 5, and a pressing mechanism is provided on the inner wall of the outer processing frame 5. The feeding frame 4 is used to transfer construction waste into the cavity formed by the outer processing frame 5 and the inner processing frame 6. A driving mechanism is provided at the top of the support base plate 22. The driving mechanism, in conjunction with the reciprocating mechanism, enables the outer processing frame 5 and the inner processing frame 6 to rotate in opposite directions while the outer processing frame 5 can also move up and down reciprocally, thereby processing construction waste. A mixing mechanism is provided on the mixer 1, which is used to mix the processed construction waste.

[0021] In this scheme, a stable bearing foundation is formed by the support platform 2, the support frame 21 and the support base plate 22. The core pre-processing function of the equipment is realized by the feeding frame 4, the outer processing frame 5 and the inner processing frame 6. The inner processing frame 6 is coaxially set inside the outer processing frame 5 and the two are set in parallel.

[0022] When the outer processing frame 5 moves up and down under the drive of the reciprocating mechanism, the radial distance between the inner surface of the outer processing frame 6 and the outer surface of the inner processing frame 5 forms an annular processing cavity that will remain the same size and change synchronously throughout the entire circumference. The inner processing frame 6 and the outer processing frame 5 are both set to inverted trapezoidal shapes.

[0023] This allows the equipment to adaptively accommodate and effectively process construction waste stones of different particle sizes by adjusting the gap. It can both uniformly compress the stone group to promote the peeling of cement adhering to the surface and avoid local jamming or excessive compression caused by uneven gaps.

[0024] The power and compound motion of the equipment come from the synergistic effect of the drive mechanism at the top of the supporting base plate 22 and the reciprocating mechanism at the bottom of the outer processing frame 5. The drive mechanism provides the core torque, driving the outer processing frame 5 and the inner processing frame 6 to rotate in opposite directions, causing the stones in the cavity to produce violent relative motion and mutual friction.

[0025] At the same time, the reciprocating mechanism transforms the rotational motion of the outer processing frame 5 into superimposed, periodic up-and-down reciprocating movements, simulating efficient manual kneading and pounding actions, which can greatly improve the peeling efficiency of the aged cement layer on the surface of the stone.

[0026] After pretreatment, the cleaned aggregate is fed into the mixer 1 along with the preheated mixing liquid released from the inner processing frame 6.

[0027] The mixing mechanism is the device that completes the final mixing. Its specific structure includes: a mixing shaft installed inside the mixing drum 1, and multiple layers of mixing blades fixed on the mixing shaft.

[0028] The mixing shaft is driven to rotate by an external motor through a reducer. When the blades rotate, they generate strong shearing, convection and diffusion effects on the aggregate, preheated mixing liquid and other additives, ensuring the uniformity of mixing and finally preparing a recycled mixture of consistent quality. This is an existing technology and will not be described in detail here.

[0029] The entire set of equipment realizes continuous, efficient and energy-saving integrated operation from pretreatment of construction waste, heat recovery to final mixing.

[0030] like Figures 3 to 7As shown, the drive mechanism includes an externally machined gear 51 and an internally machined gear 61. Both the externally machined gear 51 and the internally machined gear 61 are rotatably connected to the support base plate 22. Multiple drive motors are arranged between the externally machined gear 51 and the internally machined gear 61. Transmission gears are installed at the output end of the drive motors, and the transmission gears are meshed with the externally machined gear 51 and the internally machined gear 61.

[0031] The drive mechanism also includes a plurality of first telescopic transmission couplings 52 mounted on the top of the externally machined gear 51. The top of the plurality of first telescopic transmission couplings 52 is equipped with an outer ring 53. The top of the outer ring 53 is equipped with a plurality of evenly distributed second telescopic transmission couplings 54. The inner wall of the outer ring 53 is equipped with a plurality of extension blocks 55. The extension blocks 55 are connected to the externally machined frame 5.

[0032] Multiple evenly distributed support rods 44 are installed around the support base plate 22. A support top plate 41 is installed on one end of the top side of the support rod 44. A limit groove is opened on the support top plate 41, and the limit groove is slidably connected to the second telescopic transmission connector 54.

[0033] The reciprocating mechanism includes a reciprocating ring 57 disposed on the lower side of the outer processing frame 5. The reciprocating ring 57 is fixedly connected to the support frame 21. The reciprocating mechanism also includes multiple support legs 56 installed at the bottom of the outer processing frame 5. Rollers are installed at the bottom of the support legs 56. The rollers abut against the inner wall of the reciprocating ring 57. The inner wall of the reciprocating ring 57 is configured with a ring-shaped wave shape.

[0034] In this solution, an integrated system is used to simultaneously achieve stable reverse rotation of the outer processing frame 5 and the inner processing frame 6, and the outer processing frame 5 can move up and down while rotating, thus forming a dynamic, efficient and protective friction peeling cavity.

[0035] Its driving principle is as follows: Multiple drive motors simultaneously mesh with the external machining gear 51 and the internal machining gear 61 through the transmission gears at their output ends. Since these two gears are meshed by the same set of transmission gears, they will produce motions in opposite directions.

[0036] The rotational power of the externally machined gear 51 is transmitted to the upper external ring 53 through multiple first telescopic transmission couplings 52, ultimately driving the externally machined frame 5 to rotate. The second telescopic transmission coupling 54 installed on the upper side of the external ring 53 is slidably connected to the support top plate 41 with a limit groove to keep it stable.

[0037] Meanwhile, the rotation of the internal machining gear 61 directly drives the internal machining frame 6 through the third telescopic transmission coupling.

[0038] The first telescopic transmission coupling 52 and the second telescopic transmission coupling 54 not only transmit torque, but their own telescopic characteristics also provide the necessary length compensation and freedom of movement for the subsequent up and down movement of the outer processing frame 5, ensuring that the rotary drive will not interfere with the up and down movement.

[0039] The sliding connection between the limiting groove on the supporting top plate 41 and the second telescopic transmission coupling 54 ensures the guidance and stability of the entire upper rotating structure when it moves in the vertical direction.

[0040] Its reciprocating motion principle is combined with rotation by designing the inner wall of the fixed reciprocating ring 57 into a ring-shaped wave, and multiple support legs 56 and rollers at the bottom of the outer processing frame 5 roll closely against the inner wall of the wave-shaped track.

[0041] When the drive mechanism drives the outer processing frame 5 to rotate, the rollers on the support leg 56 are forced to roll along the wave-shaped track, thereby converting the rotational motion into the overall, regular up-and-down reciprocating movement of the outer processing frame 5. This motion is superimposed on the aforementioned reverse rotation, making the motion trajectory of the outer processing frame 5 a composite motion.

[0042] The counter-rotation of the outer processing frame 5 and the inner processing frame 6 ensures that the stones placed between them can obtain the maximum relative speed and collision friction opportunities, which greatly improves the peeling efficiency.

[0043] Secondly, the reciprocating motion of the outer processing frame 5 periodically changes the cavity volume, generating dynamic compression and release on the stone. The kneading action can more effectively break and peel off the attached cement layer, especially for the tightly wrapped parts.

[0044] Finally, the entire power transmission path achieves motion decoupling through the first telescopic transmission coupling 52 and the second telescopic transmission coupling 54, enabling the rotation and reciprocating actions to proceed synchronously and smoothly without interference.

[0045] It should be noted that the sand and gravel mixing equipment provided in this embodiment of the invention has a precisely designed drive and motion system to ensure long-term stable and reliable operation in harsh industrial environments. To this end, a protective shell is specially added around the outer machined gear 51, the inner machined gear 61 and their meshing transmission gears, which can effectively prevent foreign objects such as gravel and cement dust that accidentally fall from the upper cavity during processing from entering the gear meshing area and avoid gear jamming caused by this.

[0046] Meanwhile, this solution critically employs telescopic transmission couplings, such as the first telescopic transmission coupling 52, the second telescopic transmission coupling 54, and the third telescopic transmission coupling.

[0047] This component is a precision mechanical coupling specifically designed to transmit torque and allow axial relative sliding. Its detailed structure typically includes a sleeve with internal splines and a drive shaft with external splines, which mesh via a spline pair.

[0048] The spline connection ensures that torque is transmitted efficiently and synchronously regardless of the extension or retraction state. At the same time, the precise fit of the spline pair allows for smooth, low-resistance relative sliding between the sleeve and the shaft along the axial direction, thus achieving length compensation.

[0049] In this equipment, when the outer processing frame 5 reciprocates up and down due to the support leg 56 rolling along the wavy reciprocating ring 57, the first telescopic transmission coupling 52 and the second telescopic transmission coupling 54 can automatically absorb and compensate for this axial displacement difference through their own splined joints. Furthermore, the coupling is typically filled with high-performance grease and equipped with a dustproof sealing ring to ensure low wear, long service life, and high reliability even under frequent combined telescopic and rotational movements, forming the engineering foundation for the entire combined motion.

[0050] The extrusion mechanism includes multiple extrusion blocks embedded in the inner wall of the outer processing frame 5, and the extrusion blocks are connected to the inner wall of the outer processing frame 5 through dampers.

[0051] Among them, the extrusion mechanism is the core safety and efficiency component that ensures the equipment achieves the processing goal of stripping cement without crushing stones.

[0052] The mechanism consists of multiple extrusion blocks embedded in the inner wall of the outer processing frame 5, and a damper connecting each extrusion block to the inner wall of the frame. The extrusion blocks are the actuators that directly contact the material, while the dampers are the core components that provide controllable elasticity and cushioning.

[0053] When the outer processing frame 5 moves downward under the guidance of the wave-shaped reciprocating ring 57, the volume of the annular cavity between it and the inner processing frame 6 decreases, and the stones inside are subjected to radial compression.

[0054] At this point, the extrusion blocks embedded in the inner wall press against the stone group under the support of the damper. If the extrusion force does not exceed the preset safety threshold, which is enough to crush the hard stones, the whole mechanism will behave as a relatively rigid whole, applying strong and uniform pressure to the stones, causing intense friction and shearing between the stones and between the stones and the inner wall of the frame, thereby effectively peeling off the attached cement.

[0055] The damper plays a crucial role in intelligent buffering and protection during this process. If the accumulation or size of the stone in a certain part of the cavity causes a surge in local pressure that may threaten the integrity of the stone, the squeezing block at that point will compress the damper behind it under the action of excessive pressure and retract slightly towards the inner wall.

[0056] This retraction releases excessive concentrated stress, preventing the crushing of hard aggregates. As the pressure point shifts or decreases, the damper resets the crushing block, preparing it for the next contact.

[0057] The above methods ensure the particle size integrity and high strength of the recycled aggregate, which is a prerequisite for the high-value reuse of construction waste. At the same time, multiple independent damped extrusion blocks form an adaptive pressure array, which can automatically deal with uneven material distribution and different sizes in the cavity, making the pressure distribution more uniform and the processing effect more consistent.

[0058] Furthermore, the periodic, elastic dynamic extrusion simulates the combined effects of kneading and impact, which is more effective than pure friction in causing the brittle cement adhesion layer to fatigue, crack, and detach from the tough stone surface. This avoids problems such as equipment stalling or overload shutdown caused by large hard objects jamming or excessive pressure, thus improving the stability and continuity of system operation.

[0059] In summary, this extrusion mechanism, through the combination of a damper and an extrusion block, upgrades mechanical extrusion into a controllable and adaptive force control method, significantly improving the quality and efficiency of the peeling process.

[0060] like Figures 8 to 10 As shown, a feeding frustum 45 is installed at the bottom of the feeding frame 4. Multiple feeding connecting rods 42 are installed on the feeding frustum 45. Feeding pipes 43 that communicate with the feeding frame 4 are installed on the feeding connecting rods 42. One end of the feeding connecting rod 42 is connected to the supporting top plate 41. A hydraulic cylinder is installed at the bottom of the feeding frustum 45. The output end of the hydraulic cylinder is connected to the top of the inner processing frame 6 through a bearing.

[0061] The top of the internally machined gear 61 is connected to an internal ring 62 via a third telescopic transmission coupling. The internal ring 62 is connected to the internally machined frame 6 via a fixed rod. The internally machined frame 6 has a storage cavity containing stirring liquid, and an electric valve is installed on the internally machined frame 6.

[0062] Among them, the feeding frustum 45 and the hydraulic cylinder at its bottom end are connected to the center of the top of the inner processing frame 6 through a bearing.

[0063] When it is necessary to process stones of different sizes, the linear thrust of the hydraulic cylinder can directly push and pull the inner processing frame 6 to make vertical lifting and lowering, thereby precisely changing the gap between the inner processing frame 6 and the outer processing frame 5.

[0064] Meanwhile, the top feeding frame 4 and feeding pipe 43 are fixed to the supporting top plate 41 through the feeding connecting rod 42, forming a static feeding system to ensure that the material can be stably and evenly fed into the changing cavity under any working condition.

[0065] In order to transmit the rotational power to the vertically movable inner machining frame 6 without interference, the rotational torque output by the inner machining gear 61 at the bottom is transmitted to the inner ring 62 through the third telescopic transmission coupling, and then drives the inner machining frame 6 to rotate via the fixed rod.

[0066] The core function of the third telescopic transmission coupling is to perform length compensation. It can freely extend and retract as the inner processing frame 6 rises and falls, thus perfectly decoupling the axial adjustment movement from the circumferential rotational transmission, ensuring continuous and smooth power at any working height.

[0067] The inner processing frame 6 is designed as a large heat exchanger, with a storage chamber inside filled with a stirring fluid, usually water. During the intense friction generated during the peeling process, heat is directly transferred through the metal walls to heat the stirring fluid inside the chamber.

[0068] The preheated mixing liquid is temporarily stored. After processing is completed, it can be released directly into the subsequent mixing process by opening the electric valve on the inner processing frame 6.

[0069] In summary, through the precise electronic control of the hydraulic cylinder and the automatic compensation of the telescopic transmission mechanism, the equipment can quickly adapt to different material specifications, improve versatility and processing accuracy. At the same time, the built-in liquid storage chamber directly recovers the energy of the main frictional heat source and uses it for subsequent processes, significantly reducing the overall energy consumption of the system.

[0070] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. A sand and gravel mixing device, characterized in that, include: A support platform (2) is provided with a support frame (21) installed at the top of the support platform (2). A support base plate (22) is installed at the top of the support frame (21). A processing component (3) is provided on the support base plate (22). A feeding frame (4), an outer processing frame (5) and an inner processing frame (6) are provided on the processing component (3). The inner processing frame (6) is located inside the outer processing frame (5), and the inner processing frame (6) and the outer processing frame (5) are arranged in parallel. A reciprocating mechanism is provided at the bottom of the outer processing frame (5), and an extrusion mechanism is provided on the inner wall of the outer processing frame (5). The feeding frame (4) is used to transfer construction waste into the cavity formed by the outer processing frame (5) and the inner processing frame (6); The top of the support base plate (22) is provided with a driving mechanism. The driving mechanism, together with the reciprocating mechanism, enables the outer processing frame (5) and the inner processing frame (6) to rotate in opposite directions, while the outer processing frame (5) can also move up and down reciprocally, so as to process construction waste. A mixer (1) is provided with a mixing mechanism, which is used to mix the processed construction waste.

2. The sand and gravel mixing equipment as described in claim 1, characterized in that, The drive mechanism includes an externally machined gear (51) and an internally machined gear (61). Both the externally machined gear (51) and the internally machined gear (61) are rotatably connected to the support base plate (22). Multiple drive motors are arranged between the externally machined gear (51) and the internally machined gear (61). Transmission gears are installed at the output end of the drive motors. All transmission gears are meshed with the externally machined gear (51) and the internally machined gear (61).

3. The sand and gravel mixing equipment as described in claim 2, characterized in that, The drive mechanism also includes a plurality of first telescopic transmission couplings (52) mounted on the top of the externally processed gear (51). The top of the plurality of first telescopic transmission couplings (52) is equipped with an outer ring (53). The top of the outer ring (53) is equipped with a plurality of evenly distributed second telescopic transmission couplings (54). The inner wall of the outer ring (53) is equipped with a plurality of extension blocks (55). The extension blocks (55) are connected to the externally processed frame (5).

4. The sand and gravel mixing equipment as described in claim 1, characterized in that, The supporting base plate (22) is surrounded by a plurality of evenly distributed supporting rods (44). A supporting top plate (41) is installed on one end of the top side of the supporting rod (44). A limiting groove is provided on the supporting top plate (41), and the limiting groove is slidably connected to the second telescopic transmission connector (54).

5. The sand and gravel mixing equipment as described in claim 1, characterized in that, The extrusion mechanism includes a plurality of extrusion blocks embedded in the inner wall of the outer processing frame (5), and the extrusion blocks are connected to the inner wall of the outer processing frame (5) through dampers.

6. The sand and gravel mixing equipment as described in claim 2, characterized in that, The top of the internally machined gear (61) is connected to an inner ring (62) via a third telescopic transmission coupling. The inner ring (62) is connected to the internally machined frame (6) via a fixed rod. The internally machined frame (6) has a storage cavity, which is filled with stirring liquid. An electric valve is installed on the internally machined frame (6).

7. The sand and gravel mixing equipment as described in claim 1, characterized in that, The bottom end of the feeding frame (4) is equipped with a feeding frustum (45), and multiple feeding connecting rods (42) are installed on the feeding frustum (45). The feeding connecting rods (42) are equipped with feeding pipes (43) that communicate with the feeding frame (4), and one end of the feeding connecting rods (42) is connected to the support top plate (41). The bottom end of the feeding frustum (45) is equipped with a hydraulic cylinder, and the output end of the hydraulic cylinder is connected to the top end of the inner processing frame (6) through a bearing.

8. The sand and gravel mixing equipment as described in claim 1, characterized in that, The reciprocating mechanism includes a reciprocating ring (57) disposed on the lower side of the outer processing frame (5), and the reciprocating ring (57) is fixedly connected to the support frame (21).

9. The sand and gravel mixing equipment as described in claim 8, characterized in that, The reciprocating mechanism also includes a plurality of support legs (56) installed at the bottom of the outer processing frame (5), and rollers installed at the bottom of the support legs (56), the rollers abutting against the inner wall of the reciprocating ring (57).

10. The sand and gravel mixing equipment as described in claim 8, characterized in that, The inner wall of the reciprocating ring (57) is configured with a ring-shaped wave pattern.

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