Concrete screening and mixing integrated device

Abstract

The utility model relates to concrete screening and mixing equipment technical field discloses a kind of concrete screening mixing integrated equipment, including screening shell and installation in the mixing bin of screening shell below, the first feed inlet is arranged in the top side of screening shell, the second feed inlet is opened in the top of mixing bin, the top of screening shell is rotatably connected with two broken rotary shafts, and the screening shell is detachably connected with screening assembly, and screening assembly includes: first screen and second screen, first screen and second screen are all arranged obliquely, and the screen oblique direction is opposite, the screen mesh aperture of first screen is greater than the screen mesh aperture of second screen, middle layer discharge gate is arranged in the low side of second screen where screening shell is located, and first material guiding component is connected outside middle layer discharge gate;The feed end of first material guiding component is communicated with middle layer discharge gate, and discharge end is located above second feed inlet.

Description

Technical Field

[0001] This utility model relates to the technical field of concrete screening and mixing equipment, and in particular to an integrated concrete screening and mixing equipment. Background Technology

[0002] Concrete is a building material made by mixing cement, aggregates, sand, water, and appropriate additives in a certain proportion. It is commonly used in construction, repair, and maintenance projects for applications such as masonry, plastering, filling, and repair. The design gradation and mix proportions of concrete need to be adjusted for different applications. Therefore, in the concrete preparation process, raw materials often need to be screened and weighed to meet the required gradation and mix proportions. The particle size of aggregates and sand directly affects the quality of concrete, thus requiring screening of raw materials. Simultaneously, the raw materials need to be mixed thoroughly to ensure effective adhesion between the aggregates and cement.

[0003] Existing concrete mixing equipment uses a fixed screen plate above the mixing bin, with a rotating mixing shaft inside. Raw materials are screened through the screen plate, and the screened material enters the mixing bin for mixing. However, the existing screen plate structure results in long screening times and easy accumulation, and single-pass screening is insufficient to meet the aggregate requirements of current concrete processes. Therefore, a corresponding technical solution needs to be designed to address these technical problems. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides an integrated concrete screening and mixing equipment.

[0005] This utility model provides an integrated concrete screening and mixing equipment, including: a screening shell and a mixing chamber installed below the screening shell, a first feed inlet is provided on the top side of the screening shell, a second feed inlet is provided on the top of the mixing chamber, and two crushing rotating shafts are rotatably connected to the top of the screening shell. A screening assembly is detachably connected inside the screening housing. The screening assembly includes a first screen and a second screen. The first screen and the second screen are both arranged at an inclination and the inclination directions are opposite. The aperture of the first screen is larger than that of the second screen. The screening shell is provided with a middle layer discharge port on the lower side of the second screen, and a first material guiding component is connected to the outside of the middle layer discharge port; the inlet end of the first material guiding component is connected to the middle layer discharge port, and the outlet end is located above the second inlet.

[0006] Optionally, the first material guiding assembly includes: a first conveyor belt, a first material guiding pipe and a controller. The feeding end of the first conveyor belt is connected to the middle layer discharge port, and the discharge end is connected to the upper end of the first material guiding pipe. The first material guiding pipe is vertically fixed above the second feed port. A first weighing platform is fixed at the lower end of the first conveyor belt. The controller controls the first conveyor belt to stop during screening and to start after screening is completed.

[0007] Optionally, a third screen is inclinedly connected below the second screen, and the second screen and the third screen are inclined in opposite directions, and the screen aperture of the second screen is larger than that of the third screen. The third screen has a bottom discharge port on its lower side, and a second material guiding component is connected to the outside of the bottom discharge port. The second material guiding component has the same structure as the first material guiding component.

[0008] Optionally, multiple screen replacement ports are provided on the sides of the screening housing. Screen slots are fixed on both sides of the multiple screen replacement ports, and a connecting rod is horizontally arranged in the middle of the screen slots on both sides. Each level of screen of the screening component is inserted through the corresponding screen replacement port and slidably connected in the corresponding screen slot.

[0009] Optionally, it also includes multiple screen cleaning components, which are respectively set below each screen in the screening component. The screen cleaning components include: two blowers and a vibration motor. Each blower is connected to a connecting rod by four sets of buffer springs. The four sets of buffer springs are fixed at the four corners of the blower. The two blowers are arranged in parallel. The vibration motor is fixed at the lower end of the two blowers. The two blowers are connected to the screen slots. One side of the vibration motor is fixed to the side of the screening shell by a support rod.

[0010] Optionally, protective nets are provided at the air outlets of multiple blowers.

[0011] Optionally, a top-level discharge port is provided on the lower side of the first screen, and a first discharge platform is provided outside the top-level discharge port.

[0012] Optionally, a bottom weighing platform is fixed to the bottom of the screening shell.

[0013] Optionally, a rinsing port is provided on the left side of the mixing chamber, a first discharge port is provided at the bottom of the mixing chamber, and a second discharge platform is fixed below the first discharge port.

[0014] Optionally, the bottom of the mixing chamber is equipped with four support bases.

[0015] Compared with the prior art, the technical solution provided by this utility model embodiment has the following advantages: The material first falls between two opposing rotating crushing shafts, where it is forcibly broken up into clumps, effectively preventing clogging of subsequent screens. Subsequently, the material enters a detachable inclined screening assembly, where the unique first and second screens are arranged at opposite angles, extending the material flow path. The material first passes through the larger-aperture first screen for coarse screening, while medium and small materials fall into the smaller-aperture second screen below for fine screening, achieving precise material grading. Fine materials passing through the second screen fall directly to the bottom, while the second-stage materials that do not pass through are discharged from the middle-layer outlet on the lower side, received and conveyed by the first guiding assembly, ensuring that the material enters the mixing chamber without spillage, completing the final mixing. This integrated design seamlessly connects crushing, multi-stage screening, dynamic weighing, and mixing processes, forming a closed, continuous, and automated process. This not only significantly improves production efficiency and saves on site and labor costs through process integration, but also ensures material quality from the source through pre-crushing and fine grading, effectively preventing blockages and material segregation. This ensures the homogeneity and high strength of the final concrete product. At the same time, the fully enclosed design also greatly suppresses dust pollution, demonstrating the comprehensive advantages of high efficiency, environmental protection, and reliability. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of an integrated concrete screening and mixing equipment provided in this embodiment of the present invention; Figure 2 A side view of the screen, fan, vibrating motor and support rod provided in the embodiment of this utility model; Figure 3 A structural diagram of the screen and screen replacement slot provided in the embodiments of this utility model; Figure 4 A structural diagram of the weighing platform and transmission belt provided for an embodiment of this utility model; Figure 5 This is a structural diagram of the underlying weighing platform provided for an embodiment of the present utility model.

[0017] Explanation of reference numerals in the attached figures: 1. Screening shell; 2. First feed inlet; 3. Crushing rotating shaft; 4. Screening assembly; 5. Screen replacement port; 6. Buffer spring; 7. Blower; 8. Vibrating motor; 9. Support rod; 10. Top layer discharge port; 11. First discharge platform; 12. First weighing platform; 13. First conveyor belt; 14. First guide pipe; 15. Bottom layer weighing platform; 16. Stirring fixing rod; 17. Second feed inlet; 18. Mixing bin; 19. Stirring rotor; 20. Washing port; 21. First discharge port; 22. Second discharge platform; 23. Support base; 24. Screen slot; 25. Bottom layer weighing platform extraction port; 26. Bottom layer weighing platform slot; 27. Middle layer discharge port. Detailed Implementation

[0018] The following describes a specific embodiment of the present invention in detail with reference to the accompanying drawings. However, it should be understood that the scope of protection of the present invention is not limited to the specific embodiment.

[0019] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the technical solution of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] The present invention will be described below through several specific embodiments. To keep the following description of the embodiments of the present invention clear and concise, detailed descriptions of known functions and components may be omitted. When any component of an embodiment of the present invention appears in more than one drawing, the component may be represented by the same reference numerals in each drawing.

[0021] like Figure 1 and Figure 4 As shown, this utility model embodiment provides an integrated concrete screening and mixing equipment, including: a screening shell 1 and a mixing chamber 18 installed below the screening shell 1. A first feed inlet 2 is provided on the top side of the screening shell 1, and a second feed inlet 17 is provided on the top of the mixing chamber 18. Two crushing rotating shafts 3 are rotatably connected to the top of the screening shell 1. A screening component 4 is detachably connected inside the screening shell 1. The screening component 4 includes: a first screen and a second screen. The first screen and the second screen are both arranged at an inclination, and the inclination directions of the screens are opposite. The screen aperture of the first screen is larger than that of the second screen. A middle layer discharge port 27 is provided on the lower side of the second screen of the screening shell 1. A first material guiding component is connected to the outside of the middle layer discharge port 27. The feed end of the first material guiding component is connected to the middle layer discharge port 27, and the discharge end is located above the second feed inlet 17.

[0022] Specifically, there is a gap between the two crushing rotating shafts 3 on the top layer of the screening shell 1 to facilitate the crushing of raw materials. A stirring rotor 19 is installed inside the mixing chamber 18, and the stirring rotor 19 is fixed to the top of the mixing machine body.

[0023] Furthermore, a stirring rod 16 is fixedly connected to the upper end of the stirring rotor 19, and the stirring rod 16 is horizontally fixed to the bottom of the screening shell 1.

[0024] The material first falls between two opposing rotating crushing shafts 3, where it is forcibly broken up and agglomerated, effectively preventing clogging of subsequent screens. Then, the material enters a detachable inclined screening assembly 4, whose unique first and second screens are arranged at opposite angles, extending the material flow path. The material first passes through the larger-aperture first screen for coarse screening, while medium and small materials fall into the smaller-aperture second screen below for fine screening, achieving precise material grading. Fine materials passing through the second screen fall directly to the bottom, while the second-stage material that fails to pass through is discharged from the lower middle-layer outlet 27. After being transferred by the first material guiding assembly, it is precisely fed into the second inlet 17 at the top of the mixer. The design of this inlet ensures that the projection surface covers the material guiding assembly, preventing material spillage into the mixing chamber 18, where the mixing rotor 19 completes the final mixing. This integrated design seamlessly connects crushing, multi-stage screening, dynamic weighing, and mixing processes, forming a closed, continuous, automated process with significant benefits: it not only greatly improves production efficiency and saves space and labor costs through process integration, but also ensures material quality from the source through pre-crushing and fine grading, effectively preventing blockages and material segregation, thereby ensuring the homogeneity and high strength of the final concrete product. At the same time, the closed design of the entire process also greatly suppresses dust pollution, demonstrating the comprehensive advantages of high efficiency, environmental protection, and reliability.

[0025] Optional, see reference Figure 1 and Figure 4 The first material guiding assembly includes: a first conveyor belt 13, a first material guiding pipe 14 and a controller. The feeding end of the first conveyor belt 13 is connected to the middle layer discharge port 27, and the discharge end is connected to the upper end of the first material guiding pipe 14. The first material guiding pipe 14 is vertically fixed above the second feed port 17. A first weighing platform 12 is fixed at the lower end of the first conveyor belt 13. The controller controls the first conveyor belt 13 to stop during screening and to start after screening is completed.

[0026] Specifically, the screened material is conveyed to the first conveyor belt 13, where it is received and transported. During this process, the first weighing platform 12, fixed below the belt, simultaneously performs dynamic weighing of the material at that grade. Finally, all the graded material passes through the vertically connected first guide pipe 14. If the amount of screened material is large, it needs to be weighed in stages to prevent a large amount of screened material from squeezing the material in front and directly entering the feed inlet of the mixing component below. The conveyor belt has a rough surface to prevent the screened material from sliding down too fast and directly impacting the mixing component below. The top of the mixer is equipped with a widened second feed inlet 17.

[0027] It can accurately weigh and control large quantities of material after screening in batches, ensuring that the weight of material entering the mixing machine is fixed and the proportion is accurate each time, thus guaranteeing the quality stability of the final product. It effectively avoids the squeezing and impact problems that may occur when a large amount of screened material is transported. The batch weighing and conveying mode prevents unweighed excess material from squeezing the weighed material in front and rushing directly into the mixing bin. At the same time, the rough surface of the first conveyor belt 13 increases the friction, effectively reducing the downward speed of the material and preventing it from violently impacting the mixing bin below due to excessive acceleration due to gravity. This not only protects the equipment from damage, but also makes the entire feeding process more stable and controllable. The first guide pipe 14 is vertically aligned with the widened second feed inlet 17, forming a smooth and closed conveying channel from screening to mixing. This not only reduces material spillage and dust overflow, but also the widened feed inlet design reduces the alignment accuracy requirements, enhances the system's compatibility and the fault tolerance rate of material receiving, and further ensures the continuity and reliability of the production process.

[0028] Optional, see reference Figure 1 A third screen is inclinedly connected below the second screen, and the second screen and the third screen are inclined in opposite directions. The screen aperture of the second screen is larger than that of the third screen. A bottom discharge port is provided on the lower side of the third screen, and a second material guiding component is connected to the outside of the bottom discharge port. The second material guiding component has the same structure as the first material guiding component.

[0029] Specifically, a second weighing platform and a second transmission belt are provided on the outer side of the bottom discharge port of the screening shell 1, with the second weighing platform located below the second transmission belt. A second guide pipe is connected to the end of the second transmission belt, and the lower end of the second guide pipe extends to the top of the mixing chamber 18 above the second feed port 17.

[0030] Furthermore, the three-layer screening structure is designed to handle test schemes with multiple gradations. After screening, the sieved material, according to the determined dosage in the test scheme, enters the mixing chamber 18 through the two discharge ports at the bottom of the screen, and is then mixed simultaneously. The additional middle screen is designed primarily to handle test schemes with multiple gradations. When dealing with multi-gradation test schemes, the design of the middle screen can reduce the amount of testing in the screening process. At the same time, aggregates of different particle sizes are clearly separated and guided to different outlets, providing a prerequisite for subsequent accurate proportioning and mixing.

[0031] Optional, see reference Figure 1 and Figure 3 The screening housing 1 has multiple screen replacement ports 5 on its side. Screen slots 24 are fixed on both sides of the multiple screen replacement ports 5. A connecting rod is horizontally arranged in the middle of the screen slots 24 on both sides. Each level of screen of the screening component 4 is inserted through the corresponding screen replacement port 5 and slidably connected in the corresponding screen slot 24.

[0032] Specifically, the screen is installed in the screen slot 24 to facilitate screen removal and replacement. The screen replacement port 5 is located on the side of the screening housing 1 and is connected to the screen slot 24. The edge of the screen slot 24 is fixedly connected to the screening housing 1, and is also fixedly connected to the buffer spring 6 below through the middle connecting rod, and then connected to the blower 7 and the vibration motor 8.

[0033] Optional, see reference Figure 1 and Figure 2 It also includes multiple screen cleaning components, which are respectively set below each screen in the screening component 4. The screen cleaning components include: two blowers 7 and a vibration motor 8. Each blower 7 is connected to the connecting rod by four sets of buffer springs 6. The four sets of buffer springs 6 are respectively fixed at the four corners of the blower 7. The two blowers 7 are arranged in parallel. The vibration motor 8 is fixed at the lower end of the two blowers 7. The two blowers 7 are connected to the screen slot 24. One side of the vibration motor 8 is fixed to the side of the screening housing 1 by a support rod 9.

[0034] Specifically, the blower 7 and the vibrating motor 8 work together. The airflow generated by the blower 7 acts on the bottom of the screen for cleaning, while the vibration generated by the vibrating motor 8 is transmitted to the screening assembly 4 through the blower 7 and the buffer spring 6. The vibrating motor 8 is located below the blower 7 and is connected to the inner wall of the screening housing 1 via a support rod 9. One end of the support rod 9 is fixed to the side of the vibrating motor 8, and the other end is fixed to the inner wall of the screening housing 1, thus securing the screening assembly 4. The high-pressure airflow blown upward by the blower 7 penetrates the screen holes, blowing away fine particles attached to the bottom of the screen; simultaneously, the high-frequency, low-amplitude mechanical vibration generated by the vibrating motor 8 is transmitted to the screen through the support structure, vibrating the screen to loosen and dislodge particles stuck in the screen holes. The combination of air blowing and vibration forms a highly efficient dual cleaning mechanism. The support rod 9 fixed to the side of the screening housing 1 ensures the stability of the entire cleaning assembly during operation, solving the common problem of screen clogging. It effectively eliminates screen clogging and particle embedding that easily occur when screening wet or fine materials, thus maintaining a consistently high effective screening area and ensuring stable screening efficiency and processing capacity. This reduces the frequency of manual shutdowns for cleaning, enabling continuous and efficient automated production, which is especially important for processing viscous materials or applications requiring high output.

[0035] Optionally, protective nets are provided at the air outlets of multiple blowers 7.

[0036] Blower 7 is positioned below the screen structure to facilitate screen cleaning after screening. An independent protective mesh is installed at the outlet of blower 7. This mesh protects the blower's hardware structure to a certain extent. The mesh size is independent of the screen's mesh size; it is typically the same as or smaller than the smallest screen mesh in the equipment. This mesh blocks some larger particles without affecting normal screening, preventing material from falling into the blower and motor after passing through the screen, thus reducing negative impacts and damage to the equipment during operation. Other fine particles will not negatively affect the blower and motor.

[0037] Optional, see reference Figure 1 The first screen has a top discharge port 10 on its lower side, and a first discharge platform 11 is provided on the outer side of the top discharge port 10.

[0038] Specifically, the top discharge port 10, located on the lower side of the first screen, is the final outlet for coarse materials. This discharge port is integrally formed or welded to the screening shell 1, with a smooth inner wall to reduce material retention and friction. The first discharge platform 11, connected to its outer side, is typically a short, inclined chute or a short belt conveyor made of steel plate. Its function is to receive and guide coarse materials from the side of the screening shell 1, transporting them to a designated collection area. After being screened by the first screen, the largest particle size material that fails to pass through the screen openings automatically gathers and slides towards the top discharge port 10 on the lower side under the influence of the inclined surface of the screen and possible vibration. It is then discharged and collected in an orderly manner via the first discharge platform 11. The beneficial effect of this design is that it achieves clear material separation and orderly collection. It physically separates materials of different particle sizes, with coarse, medium, and fine materials each having their own outlets and paths, avoiding mixing and cross-contamination. This allows the materials at each stage of screening to be utilized separately. For example, coarse materials can be used for foundation subbases with lower requirements or on another production line, while medium and fine materials are used for the main structural concrete, maximizing resource utilization. At the same time, the independent discharge port and discharge platform design makes the entire screening process smoother and the layout more rational.

[0039] Optional, see reference Figure 1 and Figure 5 The bottom of the screening shell 1 is fixedly connected to the bottom weighing platform 15.

[0040] Specifically, the screening housing 1 has a bottom weighing platform extraction port 25 on its side, and bottom weighing platform slots 26 on both sides of the extraction port 25. The bottom weighing platform 15 is installed in the bottom weighing platform slots 26. The bottom weighing platform 15 is a storage platform for the screened material after screening by the bottom screen. After being screened by the coarser screens above, the finer screened material is retained on the bottom platform. The bottom weighing platform 15 is designed to prevent fine screened material from falling into the screening bin and to control the weight of the fine aggregate after multiple rounds of screening.

[0041] Optional, see reference Figure 1 A flushing port 20 is provided on the left side of the mixing chamber 18, and a first discharge port 21 is provided at the bottom of the mixing chamber 18. A second discharge platform 22 is fixed below the first discharge port 21.

[0042] Specifically, a flushing port 20 with a cover is provided on the left side of the mixing chamber 18. A first discharge port 21 and a second discharge platform 22 are provided at the bottom of the mixing chamber 18; the first discharge port 21 is also equipped with a cover. Four support bases 23 are provided at the bottom of the mixing machine. The mixing chamber 18 is the final mixing location for materials. The flushing port 20 on its left side is typically a standardized water pipe interface with a quick connector and ball valve for easy connection to a high-pressure water gun. The first discharge port 21 at the bottom of the mixing chamber 18 is the final outlet for the finished mixture and is typically equipped with a large pneumatic or electric gate valve, butterfly valve, or even a more sophisticated slide valve or rotary discharge valve to control the discharge speed and prevent leakage. The second discharge platform 22, fixed below the first discharge port 21, is typically a long, angled belt conveyor used to transport the mixed finished material to a transport vehicle or the next process step. After completing a batch of mixing operations, the finished material is discharged through the first discharge port 21 at the bottom and transported away by the second discharge platform 22. Subsequently, to maintain the cleanliness of the mixing chamber 18 and prevent residual material from hardening and caking, affecting the quality of the next mixing and the lifespan of the equipment, high-pressure water is connected through the flushing port 20 to thoroughly flush the inner walls of the mixing chamber 18, the blades of the mixing rotor 19, and other parts. Ensuring product quality and timely cleaning prevents cross-contamination between different batches of material and the detachment of residual material, thus ensuring equipment lifespan and preventing materials such as concrete from hardening inside the equipment. This reduces wear and corrosion on the mixing arms, blades, and chamber walls, significantly extending the service life of core components and reducing maintenance costs and workload.

[0043] Optional, see reference Figure 1 Four support bases 23 are provided at the bottom of the mixing chamber 18.

[0044] Specifically, these support bases 23 are typically constructed from heavy steel plates and structural steel welded into box-shaped or frame structures, sometimes filled with concrete to improve mass and damping, and reduce vibration. They are symmetrically and rationally arranged at the bottom center of gravity of the mixing silo 18, and firmly fixed to a robust concrete foundation with anchor bolts. Their core working principle is to provide stable and reliable support and effectively transfer and distribute loads. During the mixing process, especially during startup and when encountering large or hard materials, the mixing rotor 19 generates enormous torque and unbalanced forces. Simultaneously, the complex movement of materials within the silo also generates significant dynamic loads. These four support bases 23 constitute a stable, statically determinate support system, effectively transferring these complex forces (including vertical pressure, horizontal thrust, overturning moment, etc.) to the foundation, preventing equipment from swaying, shifting, or resonating. Ensuring operational safety, the robust support is the fundamental guarantee against overturning or structural damage to the equipment under high speed and heavy load; ensuring mixing quality, the stable machine body avoids uneven material mixing caused by shaking; reducing additional impact and wear on transmission components such as the reducer and motor caused by machine instability, reducing vibration and noise, and the stable base can effectively suppress the transmission of vibration to the surrounding environment.

[0045] The above-described embodiments are merely a few specific examples of this utility model. However, the embodiments of this utility model are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of this utility model.

Claims

1. A concrete screening and mixing integrated equipment, characterized in that, include: The screening shell and the mixing chamber installed below the screening shell are provided with a first feed inlet on the top side of the screening shell and a second feed inlet on the top of the mixing chamber. Two crushing rotating shafts are rotatably connected to the top of the screening shell. The screening housing is detachably connected to a screening assembly, which includes a first screen and a second screen. The first screen and the second screen are both arranged at an inclination and the inclination directions are opposite. The aperture of the first screen is larger than that of the second screen. The screening shell is provided with a middle layer discharge port at the lower side of the second screen, and a first material guiding component is connected to the outside of the middle layer discharge port; the inlet end of the first material guiding component is connected to the middle layer discharge port, and the discharge end is located above the second inlet.

2. The integrated concrete screening and mixing equipment as described in claim 1, characterized in that, The first material guiding assembly includes: a first conveyor belt, a first material guiding pipe and a controller. The feeding end of the first conveyor belt is connected to the middle layer discharge port, and the discharge end is connected to the upper end of the first material guiding pipe. The first material guiding pipe is vertically fixed above the second feed inlet. A first weighing platform is fixed at the lower end of the first conveyor belt. The controller controls the first conveyor belt to stop during screening and to start after screening is completed.

3. The integrated concrete screening and mixing equipment as described in claim 2, characterized in that, A third screen is also inclinedly connected below the second screen, and the second screen and the third screen are inclined in opposite directions. The screen aperture of the second screen is larger than that of the third screen. The third screen has a bottom discharge port on its lower side, and a second material guiding component is connected to the outside of the bottom discharge port. The second material guiding component has the same structure as the first material guiding component.

4. The integrated concrete screening and mixing equipment as described in claim 1, characterized in that, The screening housing has multiple screen replacement ports on its sides. Each of the multiple screen replacement ports has a screen slot fixed on both sides. A connecting rod is horizontally arranged in the middle of the screen slots on both sides. Each level of screen of the screening assembly is inserted through the corresponding screen replacement port and slidably connected in the corresponding screen slot.

5. The integrated concrete screening and mixing equipment as described in claim 4, characterized in that, It also includes multiple screen cleaning components, which are respectively disposed below each screen in the screening component. Each screen cleaning component includes: two blowers and a vibration motor. Each blower is connected to a connecting rod by four sets of buffer springs. The four sets of buffer springs are respectively fixed at the four corners of the blower. The two blowers are arranged in parallel. The vibration motor is fixed at the lower end of the two blowers. The two blowers are connected to the screen slots. One side of the vibration motor is fixed to the side of the screening shell by a support rod.

6. The integrated concrete screening and mixing equipment as described in claim 5, characterized in that, Each of the blowers has a protective net at its air outlet.

7. The integrated concrete screening and mixing equipment as described in claim 1, characterized in that, The first screen has a top discharge port on its lower side, and a first discharge platform is provided outside the top discharge port.

8. The integrated concrete screening and mixing equipment as described in claim 1, characterized in that, The bottom of the screening shell is fixedly connected to a bottom weighing platform.

9. The integrated concrete screening and mixing equipment as described in claim 1, characterized in that, A rinsing port is provided on the left side of the mixing chamber, and a first discharge port is provided at the bottom of the mixing chamber. A second discharge platform is fixed below the first discharge port.

10. The integrated concrete screening and mixing equipment as described in claim 1, characterized in that, The bottom of the mixing chamber is equipped with four support bases.

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