A cleaning device for concrete trucks

Abstract

This utility model discloses a cleaning device for concrete trucks, including a cleaning chamber, a main return trough, a return cavity, a water supply connecting pipe, a high-pressure water gun, a high-pressure direct spray head, a high-pressure mist spray head, and a mounting base. The upper surface of the cleaning chamber is provided with a main return trough, a right return trough, and a left return trough. A two-stage filter screen is installed in the main return trough, and a first partition screen is installed on the main return trough. A second partition screen is installed on both the right and left return troughs. This utility model adopts a structured design. Through an innovative three-dimensional spraying system and dynamic adaptation design, the device effectively solves the cleaning blind spots and adaptability problems of traditional solutions. Its combined support structure can flexibly adjust the installation position according to the wheelbase and tank diameter of the concrete truck to meet the cleaning needs of different vehicle models. The differentiated spray head configuration forms a collaborative operation mechanism. The high-pressure direct spray head can efficiently remove stubborn concrete residue, and the high-pressure mist spray head can cover the fine crevices of the tank body and achieve dust suppression.

Description

Technical Field

[0001] This utility model relates to the field of cleaning device technology, and in particular to a cleaning device for concrete trucks. Background Technology

[0002] As a core transportation equipment in the construction engineering field, concrete mixer trucks are prone to accumulating concrete residue, mud, and oil stains on their tanks and chassis during long-term use. If not cleaned promptly, this can lead to reduced tank capacity and decreased transportation efficiency, and may also cause tank corrosion and tire jamming due to hardened residue, increasing safety hazards. Therefore, regular cleaning of concrete mixer trucks is a crucial aspect of engineering operation and maintenance. Currently, concrete mixer truck cleaning methods are mainly divided into manual cleaning and equipment cleaning, but both have significant technical shortcomings. First, existing concrete mixer truck cleaning solutions have significant shortcomings in efficiency and coverage, making it difficult to meet the needs of engineering operation and maintenance. Manual cleaning relies on manual operation, which is not only labor-intensive and time-consuming, but also limited by the operating angle and range. Hidden areas such as tank side seams, chassis crossbeams, and the top feed inlet can easily become cleaning blind spots. Long-term accumulation of residual concrete residue and oil stains will exacerbate corrosion of vehicle components, affecting tank capacity accuracy and driving safety. Traditional cleaning equipment often uses fixed frames and single water spray pipe structures, which are not suitable for... The different wheelbases and tank diameters of concrete mixer trucks lead to issues where some tanks cannot be fully covered. Furthermore, the nozzles have limited functionality, only capable of rinsing the main body of the tank, lacking effective cleaning mechanisms for areas prone to dirt accumulation such as the chassis interior and tire roots, making cleaning effectiveness unreliable. Secondly, the existing equipment's water circulation and maintenance design has structural flaws, hindering long-term stable operation. Some equipment with wastewater recirculation functions simply collects wastewater in a simple tank and circulates it directly, without establishing a complete purification chain. Concrete block residues, fine sand, and other impurities in the wastewater easily clog the spray pipes and nozzles, requiring frequent shutdowns for cleaning and causing impurities to re-adhere to the tank with the circulating water, creating a vicious cycle of increasingly dirty tanks. Additionally, existing equipment often uses welded or one-piece designs for its piping, resulting in complex filter installation structures. Later maintenance requires disassembling the entire component, increasing maintenance costs and extending equipment downtime. Moreover, the lack of an emergency water supply mechanism means that cleaning operations are easily interrupted when the circulation system fails, affecting project transportation efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a cleaning device for concrete trucks to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a cleaning device for commercial concrete trucks, including a cleaning chamber, wherein a main return channel, a right return channel, and a left return channel are provided on the upper surface of the cleaning chamber; a secondary filter screen is provided in the main return channel; a first partition screen is provided on the main return channel; a second partition screen is provided on both the right and left return channels; and a connecting channel is provided on the inner wall of both the right and left return channels; an installation groove is provided at the end of the main return channel; an activated carbon filter is provided in the installation groove; a return cavity is provided at the end of the main return channel; a first discharge pipe is provided on one side of the outer wall of the return cavity; and a ramp is provided at the front end of the cleaning chamber.

[0005] As a further technical solution of this utility model, a connecting flange is provided at the end of the first discharge pipe, and a connecting pipe is provided at the end of the first discharge pipe. Both ends of the connecting pipe are provided with connecting flanges. A first water pump is provided at the end of the connecting pipe. A filter box is provided at the output end of the first water pump. An inlet pipe is provided on one side of the outer wall of the filter box. The inlet pipe is located at the output end of the first water pump. A second discharge pipe is provided on the upper surface of the filter box. A second water pump is provided at the end of the second discharge pipe. A first connecting pipe is provided at the output end of the second water pump. A right connecting port is opened on the right side of the outer wall of the cleaning chamber, and the first connecting pipe is located in the right connecting port.

[0006] As a further technical solution of this utility model, a left connecting port is provided on the left outer wall of the cleaning chamber, a water supply connecting pipe is provided in the left connecting port, and a third water pump is provided at the end of the water supply connecting pipe.

[0007] As a further technical solution of this utility model, the input end of the third water pump is provided with a water tank, and the upper surface of the water tank is provided with a third discharge pipe, the end of the third discharge pipe being located at the input end of the third water pump.

[0008] As a further technical solution of this utility model, a fourth discharge pipe is provided on one side of the outer wall of the water tank, both ends of the fourth discharge pipe are provided with connecting flanges, and a fourth water pump is provided at the end of the fourth discharge pipe.

[0009] As a further technical solution of this utility model, a water supply hose is provided at the end of the fourth water pump, and a high-pressure water gun is provided at the end of the water supply hose.

[0010] As a further technical solution of this utility model, the cleaning chamber is equipped with a spraying mechanism, which includes a first support frame, a second support frame, a third support frame, a fourth support frame, a fifth support frame, a first water supply steel pipe, a second water supply steel pipe, a third water supply steel pipe, a fourth water supply steel pipe, a high-pressure direct nozzle, a high-pressure mist nozzle, a transverse connecting pipe, and a mounting base. The first water supply steel pipe, the second water supply steel pipe, the third water supply steel pipe, and the fourth water supply steel pipe are respectively installed on the inner walls of the second support frame, the third support frame, the fourth support frame, and the fifth support frame.

[0011] As a further technical solution of this utility model, high-pressure direct nozzles and high-pressure mist nozzles are provided on the first water supply steel pipe and the fourth water supply steel pipe, and high-pressure direct nozzles are provided on the second water supply steel pipe and the third water supply steel pipe.

[0012] As a further technical solution of this utility model, the first water supply steel pipe, the second water supply steel pipe, the third water supply steel pipe and the fourth water supply steel pipe are all provided with transverse connecting pipes on both sides, and the transverse connecting pipes are respectively provided with high-pressure mist nozzles and high-pressure direct nozzles.

[0013] As a further technical solution of this utility model, the fourth water supply steel pipe is provided with a mounting base, and a high-pressure water gun is provided on the mounting base.

[0014] Compared with existing technologies, the beneficial effects achieved by this utility model are as follows: This utility model adopts a structured design. Through an innovative three-dimensional spraying system and dynamic adaptation design, the device effectively solves the cleaning blind spots and compatibility problems of traditional solutions. Its combined support structure can be flexibly adjusted in installation position according to the wheelbase and tank diameter of the concrete truck to meet the cleaning needs of different vehicle models. Differentiated nozzle configurations form a collaborative operation mechanism. High-pressure direct spray nozzles can efficiently remove stubborn concrete residue, while high-pressure mist nozzles can cover the fine crevices of the tank body and achieve dust suppression. Combined with the lateral extension pipeline, the spraying range is further expanded. At the same time, a manual cleaning component is added to supplement the cleaning of hidden areas such as the tank top and the inner side of the chassis, achieving full-dimensional cleaning without dead angles from the tank body to the chassis. This not only improves the cleanliness but also significantly shortens the operation cycle and reduces the impact of residue adhesion on the vehicle. To prevent damage to components and ensure the long-term operational performance of the concrete mixer truck, the device employs a closed-loop water circulation design with tiered purification to address the secondary pollution and clogging issues of traditional circulation systems. Wastewater is collected in multiple areas and then sequentially passes through a multi-stage purification chain including coarse filtration, fine filtration, and adsorption to effectively remove impurities and pollutants, ensuring that the circulating water quality meets cleaning requirements and significantly reducing fresh water consumption. This also prevents impurities from causing wear and tear on pipes and nozzles. In terms of operation and maintenance design, modular pipe connections and detachable filter media structures are adopted, allowing for pipe maintenance and filter media replacement without disassembling the entire system, greatly reducing maintenance difficulty and costs. Furthermore, an emergency water supply unit is added to ensure continuous cleaning operations in the event of a circulation system failure, minimizing the impact of downtime on project progress, extending the overall service life of the equipment, and improving long-term operational stability and economy. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a left-view stereoscopic structural diagram of the present invention;

[0018] Figure 3 This is an exploded view of the cleaning chamber structure of this utility model;

[0019] Figure 4 for Figure 3 Enlarged structural diagram of region A in the middle;

[0020] Figure 5 This is a three-dimensional structural diagram of the spraying mechanism of this utility model.

[0021] In the diagram: 1. Cleaning chamber; 2. Main return trough; 3. Right return trough; 4. Left return trough; 5. Connecting trough; 6. First partition mesh; 7. Second partition mesh; 8. Secondary filter screen; 9. Installation trough; 10. Activated carbon filter element; 11. Return chamber; 12. First discharge pipe; 13. Connecting flange; 14. Connecting pipe; 15. First water pump; 16. Filter box; 17. Inlet pipe; 18. Second discharge pipe; 19. Second water pump; 20. First connecting pipe; 21. Slope; 22. Right connecting port; 23. Left connecting port; 24. Water supply connecting pipe; 25. Third water pump; 26. 27. Water tank; 28. Third discharge pipe; 29. ​​Fourth discharge pipe; 30. Fourth water pump; 31. Water supply hose; 32. High-pressure water gun; 33. Spraying mechanism; 3201. First support frame; 3202. Second support frame; 3203. Third support frame; 3204. Fourth support frame; 3205. Fifth support frame; 3206. First water supply steel pipe; 3207. Second water supply steel pipe; 3208. Third water supply steel pipe; 3209. Fourth water supply steel pipe; 3210. High-pressure direct nozzle; 3211. High-pressure mist nozzle; 3212. Horizontal connecting pipe; 3213. Mounting base. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] Please see the appendix Figure 1 - Appendix Figure 5This utility model provides an embodiment of a concrete truck cleaning device, comprising a cleaning chamber 1. The upper surface of the cleaning chamber 1 is provided with a main return channel 2, a right return channel 3, and a left return channel 4. A secondary filter screen 8 is installed in the main return channel 2, and a first partition screen 6 is installed on the main return channel 2. Second partition screens 7 are installed on both the right return channel 3 and the left return channel 4, and connecting grooves 5 are provided on the inner walls of both the right return channel 3 and the left return channel 4. An installation groove 9 is provided at the end of the main return channel 2, and an activated carbon filter element 10 is installed in the installation groove 9. A return cavity 11 is provided at the end of the main return channel 2, and a section is provided on one side of the outer wall of the return cavity 11. The system includes a first discharge pipe 12, a ramp 21 at the front end of the cleaning chamber 1, a connecting flange 13 at the end of the first discharge pipe 12, and a connecting pipe 14 at the end of the first discharge pipe 12. Both ends of the connecting pipe 14 are equipped with connecting flanges 13. A first water pump 15 is installed at the end of the connecting pipe 14. A filter box 16 is installed at the output end of the first water pump 15. An inlet pipe 17 is installed on one outer wall of the filter box 16, located at the output end of the first water pump 15. A second discharge pipe 18 is installed on the upper surface of the filter box 16, and a second water pump 19 is installed at the end of the second discharge pipe 18. The output end of the cleaning chamber 1 is provided with a first connecting pipe 20. A right connecting port 22 is opened on the right outer wall of the cleaning chamber 1, and the first connecting pipe 20 is located in the right connecting port 22. The first connecting pipe 20 is connected to the spraying mechanism 32 to supply water to the spraying mechanism 32. A left connecting port 23 is opened on the left outer wall of the cleaning chamber 1. A water supply connecting pipe 24 is provided in the left connecting port 23. A third water pump 25 is provided at the end of the water supply connecting pipe 24. The third water pump 25 is connected to the water tank 26 and is used to draw water from the water tank 26. The input end of the third water pump 25 is provided with the water tank 26, and a third discharge pipe 27 is provided on the upper surface of the water tank 26. The end of the third discharge pipe 27 is located at the input end of the third water pump 25. The third discharge pipe 27 is used to transport water in the water tank 26 to the third water pump 25. A fourth discharge pipe 28 is provided on one outer wall of the water tank 26. Both ends of the fourth discharge pipe 28 are provided with connecting flanges 13. The end of the fourth discharge pipe 28 is provided with a fourth water pump 29. The fourth water pump 29 is used to pressurize the water in the water tank 26 and transport it to the water supply hose 30. The end of the fourth water pump 29 is provided with a water supply hose 30. The end of the water supply hose 30 is provided with a high-pressure water gun 31. The high-pressure water gun 31 is used to manually clean local areas of the concrete truck.The cleaning chamber 1 is equipped with a spraying mechanism 32, which includes a first support frame 3201, a second support frame 3202, a third support frame 3203, a fourth support frame 3204, a fifth support frame 3205, a first water supply steel pipe 3206, a second water supply steel pipe 3207, a third water supply steel pipe 3208, a fourth water supply steel pipe 3209, a high-pressure direct nozzle 3210, a high-pressure mist nozzle 3211, a horizontal connecting pipe 3212, and a mounting base 3213. The inner walls of the second support frame 3202, the third support frame 3203, the fourth support frame 3204, and the fifth support frame 3205 are respectively equipped with the first water supply steel pipe 3206, the second water supply steel pipe 3207, the third water supply steel pipe 3208, and the fourth water supply steel pipe 3209, each used to transport cleaning water to the corresponding nozzle. The first water supply steel pipe 3206 and the fourth water supply steel pipe 3209... Each of the four water supply pipes is equipped with a high-pressure direct spray head 3210 and a high-pressure mist spray head 3211. The second water supply pipe 3207 and the third water supply pipe 3208 are also equipped with high-pressure direct spray heads 3210. The high-pressure direct spray heads 3210 are used for powerful rinsing of stubborn stains, while the high-pressure mist spray heads 3211 are used to cover crevices and reduce dust. The first water supply pipe 3206, the second water supply pipe 3207, the third water supply pipe 3208, and the fourth water supply pipe 3209 are all equipped with transverse connecting pipes 3212 on both sides. These transverse connecting pipes 3212 are equipped with both high-pressure mist spray heads 3211 and high-pressure direct spray heads 3210, respectively, to expand the spray range and cover more cleaning areas. The fourth water supply pipe 3209 is equipped with a mounting base 3213, on which a high-pressure water gun 31 is mounted. The mounting base 3213 is used to fix the high-pressure water gun 31 for easy operation.

[0024] Working Principle: Using this invention, the concrete mixer truck is first smoothly driven into the designated area inside the cleaning chamber 1 via the ramp 21 set at the front end of the cleaning chamber 1. The ramp 21 can eliminate the height difference obstacle when the concrete mixer truck enters and exits, ensuring that the vehicle is accurately stopped within the coverage area of ​​the spraying mechanism 32, laying the foundation for subsequent cleaning operations. If circulating water cleaning is used, the first water pump 15 is started, and the pre-treated sewage temporarily stored in the return chamber 11 flows out through the first discharge pipe 12. It is sealed to the connecting pipe 14 through the connecting flange 13 at the end of the first discharge pipe 12. The sewage is transported to the input end of the first water pump 15 through the connecting pipe 14. After the first water pump 15 pressurizes the sewage, it is sent into the filter box 16 for terminal purification through the water inlet pipe 17. The purified clean water flows out from the second discharge pipe on the upper surface of the filter box 16. 18 flows out, the second water pump 19 is started, and clean water is pressurized by the second water pump 19 and then transported through the first connecting pipe 20 to the right connecting port 22 on the outer right side of the cleaning chamber 1. Finally, it is connected to the water supply steel pipes of the spraying mechanism 32 to complete the main circulation water supply link. If the circulating water is insufficient or needs to be replenished for cleaning, the third water pump 25 is started. The new water in the water tank 26 flows into the input end of the third water pump 25 through the third discharge pipe 27 on the upper surface of the water tank 26. The third water pump 25 pressurizes the new water and then transports it through the water supply connecting pipe 24 to the left connecting port 23 on the outer left side of the cleaning chamber 1 to the spraying mechanism 32 to realize emergency water supply. If it is necessary to manually clean the top feed inlet of the tank, the inside of the tires and other hidden areas, the fourth water pump 29 is started. The water in the water tank 26 flows through the fourth connecting port 23 on the outer side of the water tank 26. The discharge pipe 28 has connecting flanges 13 at both ends, which flow into the fourth water pump 29. After being pressurized by the fourth water pump 29, the water is delivered to the high-pressure water gun 31 through the water supply hose 30. The operator holds the high-pressure water gun 31 for targeted cleaning. The first support frame 3201 of the spraying mechanism 32 provides fixed support for the overall frame. The inner walls of the second support frame 3202, the third support frame 3203, the fourth support frame 3204, and the fifth support frame 3205 are respectively fixedly installed with the first water supply steel pipe 3206, the second water supply steel pipe 3207, the third water supply steel pipe 3208, and the fourth water supply steel pipe 3209. The installation height and angle of each water supply steel pipe can be adjusted according to the wheelbase and tank diameter of the concrete truck to adapt to the cleaning needs of different vehicle models. The first water supply steel pipe 3206 and the fourth water supply steel pipe 3209 are... Each tank is equipped with a high-pressure direct spray nozzle 3210 and a high-pressure mist spray nozzle 3211. The high-pressure direct spray nozzle 3210 sprays high-pressure water to remove stubborn concrete residue adhering to the tank body and sides, while the high-pressure mist spray nozzle 3211 sprays atomized water to cover the crevices of the tank body and reduce dust pollution during the cleaning process. High-pressure direct spray nozzles 3210 are also installed on the second water supply steel pipe 3207 and the third water supply steel pipe 3208 to conduct intensive washing of the main body area of ​​the concrete truck tank, ensuring that the main body stains are thoroughly removed. Horizontal connecting pipes 3212 are installed on both sides of the first water supply steel pipe 3206, the second water supply steel pipe 3207, the third water supply steel pipe 3208, and the fourth water supply steel pipe 3209. High-pressure mist spray nozzles 3211 and high-pressure direct spray nozzles 3210 are respectively installed on the horizontal connecting pipes 3212.Extending the spraying range further, covering areas prone to dirt accumulation such as the chassis edge and the gaps between the tank body and the frame, the high-pressure water gun 31 is fixed by the mounting bracket 3213 on the fourth water supply steel pipe 3209. When mechanical spraying cannot cover areas such as the top of the tank and the tire base, operators can use the high-pressure water gun 31 fixed by the mounting bracket 3213 or hold the high-pressure water gun 31 at the end of the water supply hose 30 for precise supplementary cleaning, ensuring no blind spots in cleaning. The wastewater after cleaning flows along the upper surface of the cleaning chamber 1 and flows into the main return channel 2, the right return channel 3, and the left return channel 4 respectively. The second baffle net 7 set on the right return channel 3 and the left return channel 4 first intercepts blocky concrete residues in the wastewater. The first baffle net 7 set on the main return channel 2 The filter screen 6 further intercepts large impurities in the main return channel 2. Simultaneously, the connecting channels 5 on the inner walls of the right return channel 3 and left return channel 4 guide the pre-treated wastewater into the main return channel 2, achieving centralized wastewater collection. The secondary filter screen 8 installed in the main return channel 2 filters out fine sand, stone chips, and other small impurities from the wastewater. The activated carbon filter element 10 installed in the installation slot 9 at the end of the main return channel 2 adsorbs oil and concrete pigments from the wastewater, improving wastewater quality. The wastewater, pre-treated by the secondary filter screen 8 and activated carbon filter element 10, flows into the return chamber 11 at the end of the main return channel 2 for temporary storage, awaiting reuse in the main circulation water supply chain, completing the closed-loop process of cleaning, collection, purification, and circulation.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A cleaning device for commercial concrete trucks, comprising a cleaning chamber (1), characterized in that: The upper surface of the cleaning chamber (1) is provided with a main return channel (2), a right return channel (3) and a left return channel (4). A secondary filter screen (8) is provided in the main return channel (2). A first partition screen (6) is provided on the main return channel (2). A second partition screen (7) is provided on both the right return channel (3) and the left return channel (4). A connecting groove (5) is provided on the inner wall of both the right return channel (3) and the left return channel (4). An installation groove (9) is provided at the end of the main return channel (2). An activated carbon filter element (10) is provided in the installation groove (9). A return cavity (11) is provided at the end of the main return channel (2). A first discharge pipe (12) is provided on one side of the outer wall of the return cavity (11). A ramp (21) is provided at the front end of the cleaning chamber (1).

2. The cleaning device for commercial concrete trucks according to claim 1, characterized in that: The first discharge pipe (12) is provided with a connecting flange (13) at its end and a connecting pipe (14) at its end. Both ends of the connecting pipe (14) are provided with connecting flanges (13). The first water pump (15) is provided at the end of the connecting pipe (14). A filter box (16) is provided at the output end of the first water pump (15). An inlet pipe (17) is provided on one side of the outer wall of the filter box (16). The inlet pipe (17) is located at the output end of the first water pump (15). A second discharge pipe (18) is provided on the upper surface of the filter box (16). A second water pump (19) is provided at the end of the second discharge pipe (18). A first connecting pipe (20) is provided at the output end of the second water pump (19). A right connecting port (22) is opened on the right side outer wall of the cleaning chamber (1), and the first connecting pipe (20) is located in the right connecting port (22).

3. A cleaning device for commercial concrete trucks according to claim 2, characterized in that: A left connecting port (23) is provided on the left outer wall of the cleaning chamber (1), and a water supply connecting pipe (24) is provided in the left connecting port (23). A third water pump (25) is provided at the end of the water supply connecting pipe (24).

4. A cleaning device for commercial concrete trucks according to claim 3, characterized in that: The third water pump (25) has a water tank (26) at its input end, and a third discharge pipe (27) is provided on the upper surface of the water tank (26). The end of the third discharge pipe (27) is located at the input end of the third water pump (25).

5. A cleaning device for commercial concrete trucks according to claim 4, characterized in that: A fourth discharge pipe (28) is provided on one side of the outer wall of the water tank (26). Both ends of the fourth discharge pipe (28) are provided with connecting flanges (13), and a fourth water pump (29) is provided at the end of the fourth discharge pipe (28).

6. A cleaning device for commercial concrete trucks according to claim 5, characterized in that: The fourth water pump (29) is provided with a water supply hose (30) at its end, and a high-pressure water gun (31) is provided at the end of the water supply hose (30).

7. A cleaning device for commercial concrete trucks according to claim 1, characterized in that: The cleaning chamber (1) is equipped with a spraying mechanism (32), which includes a first support frame (3201), a second support frame (3202), a third support frame (3203), a fourth support frame (3204), a fifth support frame (3205), a first water supply steel pipe (3206), a second water supply steel pipe (3207), a third water supply steel pipe (3208), a fourth water supply steel pipe (3209), a high-pressure direct nozzle (3210), a high-pressure mist nozzle (3211), a transverse connecting pipe (3212), and a mounting base (3213). The inner walls of the second support frame (3202), the third support frame (3203), the fourth support frame (3204), and the fifth support frame (3205) are respectively equipped with the first water supply steel pipe (3206), the second water supply steel pipe (3207), the third water supply steel pipe (3208), and the fourth water supply steel pipe (3209).

8. A cleaning device for commercial concrete trucks according to claim 7, characterized in that: High-pressure direct nozzles (3210) and high-pressure mist nozzles (3211) are installed on the first water supply steel pipe (3206) and the fourth water supply steel pipe (3209), and high-pressure direct nozzles (3210) are installed on the second water supply steel pipe (3207) and the third water supply steel pipe (3208).

9. A cleaning device for commercial concrete trucks according to claim 7, characterized in that: The first water supply steel pipe (3206), the second water supply steel pipe (3207), the third water supply steel pipe (3208) and the fourth water supply steel pipe (3209) are all provided with transverse connecting pipes (3212) on both sides, and the transverse connecting pipes (3212) are respectively provided with high-pressure mist nozzles (3211) and high-pressure direct nozzles (3210).

10. A cleaning device for commercial concrete trucks according to claim 7, characterized in that: The fourth water supply steel pipe (3209) is provided with a mounting base (3213), and a high-pressure water gun (31) is provided on the mounting base (3213).

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