An ultrasonic cleaning device for automobile engine cylinder

Abstract

This utility model discloses an ultrasonic automotive engine cylinder block cleaning device, including a cleaning tank. A corridor-shaped truss is welded and installed above the cleaning tank, and an I-shaped steel rail is fixedly installed on the inner top surface of the corridor-shaped truss. A chain hoist is driven by pulleys and chains on the I-shaped steel rail. In this utility model, a two-stage cleaning mode of "ultrasonic cleaning + high-pressure spraying" is adopted: the ultrasonic cleaning chamber generates high-frequency vibration through several PZT-4 piezoelectric ceramic transducers, which can penetrate into the fine gaps of cylinder block air passages, oil passages, etc., and remove stubborn oil stains and carbon deposits; the subsequent spraying chamber achieves all-round cleaning of the cylinder block without dead angles through two circulation pipes with comb-like parts, effectively removing impurities carried by the cylinder block surface after the ultrasonic cleaning stage. At the same time, the cross-shaped partition of the auto parts lifting frame divides multiple receiving chambers, which can clean multiple cylinder blocks at the same time and avoid collision and scratches. The cleaning efficiency of a single batch is significantly improved compared with traditional manual cleaning.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive parts cleaning equipment, and in particular to an ultrasonic automotive engine cylinder block cleaning device. Background Technology

[0002] In the field of automotive engine repair and refurbishment, the cleaning quality of the engine block directly affects the subsequent assembly accuracy and engine lifespan.

[0003] Current cleaning methods mostly employ manual brushing or simple spraying. Manual brushing requires treating each cylinder individually and is difficult to reach into the fine crevices such as the air passages and oil passages, resulting in a removal rate of less than 60% for stubborn oil stains and carbon deposits. Simple spraying can only rinse surface stains and cannot solve the problem of residual impurities in crevices. A single batch of cleaning can only treat 1-2 cylinders, which is inefficient and cannot meet the needs of batch operations. Although some equipment incorporates ultrasonic cleaning, it lacks subsequent auxiliary rinsing. When the cylinder block is removed from the ultrasonic chamber, it easily carries detached impurities, posing a high risk of secondary contamination. Traditional drying relies mainly on natural air drying or unidirectional hot air drying. Natural air drying takes 2-3 hours, which is extremely inefficient. Unidirectional hot air drying is prone to localized overheating (temperatures exceeding 100°C), leading to aging of cylinder block seals, peeling of surface coatings, and uneven drying. Moisture can easily remain in the cylinder block gaps, causing rust problems during subsequent assembly and affecting engine performance. During batch cleaning, cylinder blocks are often stacked without a dedicated separating structure, making them prone to collisions during transportation and cleaning, resulting in scratches on the cylinder block surface and deformation of edges and corners, increasing the scrap rate and further reducing overall operational efficiency.

[0004] To address this issue, an ultrasonic automotive engine cylinder block cleaning device is proposed, which possesses the advantages of high efficiency, cleanliness, and safety, thereby solving the problems mentioned in the background technology. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an ultrasonic automotive engine cylinder block cleaning device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an ultrasonic automotive engine cylinder block cleaning device, comprising a cleaning tank, a corridor-shaped truss welded and installed above the cleaning tank, and an I-shaped steel rail fixedly installed on the inner top surface of the corridor-shaped truss. A chain hoist is driven on the I-shaped steel rail via pulleys and a chain, and a hook is fixedly installed at the bottom of the chain hoist. An auto parts lifting frame is provided below the chain hoist, and multiple hanging ears are welded to the top surface of the auto parts lifting frame. A steel wire rope is installed on each hanging ear of the auto parts lifting frame, and one end of the steel wire rope is connected to the chain hoist. The cleaning tank is connected to the hooks. An ultrasonic cleaning chamber is provided in the middle of the cleaning tank, a draining and drying chamber is provided on the left side of the cleaning tank, and a spray chamber is provided on the right side of the cleaning tank. Several transducers are installed in a rectangular array at the bottom of the ultrasonic cleaning chamber. An ultrasonic generator electrically connected to the transducers is installed on the side of the cleaning tank. A circulation pipe is installed on the side of the spray chamber, and a booster pump is installed on the surface of the circulation pipe. An industrial hot air fan is fixedly installed on the side of the cleaning tank, and the air outlet of the industrial hot air fan is connected to an air supply pipe. The air supply pipe passes through the draining and drying chamber and is connected to a blower hood.

[0007] As a further description of the above technical solution: there are two sets of circulation pipes and booster pumps, and the two sets of circulation pipes and booster pumps are symmetrically arranged about the vertical center line of the spray chamber. The upper end of each circulation pipe is connected to a comb-tooth part, and the lower end of each circulation pipe is connected to the spray chamber. A circular perforated plate is embedded in the end face of each branch pipe of the comb-tooth part, and an inclined mounting seat is welded to the surface of each branch pipe of the comb-tooth part. A flushing nozzle is sealed on the end face of the inclined mounting seat, and the flushing nozzle is oriented towards the auto parts hanging frame.

[0008] As a further description of the above technical solution: the air supply duct is arranged in a U-shape, and each end of the air supply duct is connected to a blower hood, and the air outlets of the blower hoods of the air supply duct are arranged facing each other. The hot air temperature range output by the industrial hot air blower is 50-80℃.

[0009] As a further description of the above technical solution: the ultrasonic cleaning chamber, spray chamber and drain drying chamber are of the same size, and the size of the ultrasonic cleaning chamber, spray chamber and drain drying chamber is larger than the size of the auto parts hanging frame, and the lower side of the ultrasonic cleaning chamber, spray chamber and drain drying chamber are respectively connected to a drain pipe.

[0010] As a further description of the above technical solution: a set of reinforcing blocks are welded to the left and right sides inside the corridor truss, and the reinforcing blocks are composed of steel pads and triangular blocks integrally formed on their top surfaces, and the steel pads of the reinforcing blocks are welded to the top surface of the cleaning pool.

[0011] As a further description of the above technical solution: the inner side of the auto parts lifting frame is divided into multiple receiving cavities by a cross-shaped partition, and the size of the multiple receiving cavities is adapted to the size of the automobile engine block.

[0012] As a further description of the above technical solution: the cross section of the corridor truss is an inverted U-shaped structure, and the I-shaped steel rails inside the corridor truss are arranged along the length of the cleaning pool.

[0013] As a further description of the above technical solution: the cross-section of the inclined mounting base is a right-angled triangle structure, and a threaded interface is provided on the shorter inclined side of the inclined mounting base corresponding to the flushing nozzle.

[0014] As a further description of the above technical solution: a flange is fixed to the end of the drain pipe away from the cleaning pool, and a valve is installed on the surface of the drain pipe.

[0015] As a further description of the above technical solution: stainless steel mesh is welded and installed on the bottom surface and multiple sides of the auto parts hanging frame, and multiple hanging ears are distributed at the four corners of the top surface of the auto parts hanging frame.

[0016] This utility model has the following beneficial effects: This invention employs a two-stage cleaning mode of "ultrasonic cleaning + high-pressure spraying": the ultrasonic cleaning chamber generates high-frequency vibrations through several PZT-4 piezoelectric ceramic transducers, which can penetrate deep into the tiny gaps of the cylinder block's air passages and oil passages to remove stubborn oil stains and carbon deposits; the subsequent spraying chamber uses two circulation pipes with comb-like sections to achieve all-round, dead-angle-free cleaning of the cylinder block, effectively removing impurities carried onto the cylinder block surface by the ultrasonic cleaning stage. Simultaneously, the cross-shaped partition of the auto parts hanger divides multiple receiving chambers, allowing for the simultaneous cleaning of multiple cylinder blocks while avoiding collisions and scratches, significantly improving the cleaning efficiency per batch compared to traditional manual cleaning.

[0017] In this invention, the draining and drying chamber adopts a U-shaped air supply duct and a counter-current blowing hood design. A 3kW industrial hot air blower outputs hot air at 50-80℃, which achieves rapid evaporation of moisture on the cylinder surface through convection airflow, shortening the drying time to 5-8 minutes, which is more than 10 times more efficient than natural air drying. Moreover, the hot air temperature is controlled within the tolerance range of the cylinder seals and coatings, avoiding material aging or deformation caused by high temperature. After drying, there are no watermarks or oxidation marks on the cylinder surface. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an ultrasonic automotive engine cylinder block cleaning device according to the present invention. Figure 2 This is a top view of the cleaning tank; Figure 3 This is a structural schematic diagram of an auto parts lifting frame; Figure 4This is a schematic diagram of the circulation pipe.

[0019] Legend: 1. Cleaning tank; 2. Corridor truss; 3. I-beam rail; 4. Chain hoist; 5. Hook; 6. Automotive parts lifting frame; 7. Hanging lug; 8. Wire rope; 9. Ultrasonic generator; 10. Transducer; 11. Circulation pipe; 12. Booster pump; 13. Industrial hot air blower; 14. Air supply duct; 15. Ultrasonic cleaning chamber; 16. Spray chamber; 17. Drainage and drying chamber; 18. Blower hood; 19. Drain pipe; 20. Comb section; 21. Receiving cavity; 22. Circular perforated plate; 23. Angled mounting base; 24. Rinsing nozzle. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] According to an embodiment of the present invention, an ultrasonic automotive engine cylinder block cleaning device is provided.

[0022] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figure 1-4 As shown, an ultrasonic automotive engine cylinder block cleaning device according to an embodiment of this utility model includes a cleaning tank 1. A corridor-shaped truss 2 is welded and installed above the cleaning tank 1, and an I-shaped steel rail 3 is fixedly installed on the inner top surface of the corridor-shaped truss 2. A chain hoist 4 is driven by pulleys and chains on the I-shaped steel rail 3, and a hook 5 is fixedly installed at the bottom of the chain hoist 4. An auto parts lifting frame 6 is provided below the chain hoist 4, and multiple hanging ears 7 are welded to the top surface of the auto parts lifting frame 6. A steel wire rope 8 is installed on each hanging ear 7 of the auto parts lifting frame 6, and one end of the steel wire rope 8 is connected to the hook 5 of the chain hoist 4. The middle part of the cleaning tank 1 An ultrasonic cleaning chamber 15 is provided, and a draining and drying chamber 17 is provided on the left side of the cleaning tank 1, and a spray chamber 16 is provided on the right side of the cleaning tank 1. Several transducers 10 are installed in a rectangular array at the bottom of the ultrasonic cleaning chamber 15. An ultrasonic generator 9 electrically connected to the transducers 10 is installed on the side of the cleaning tank 1. A circulation pipe 11 is installed on the side of the spray chamber 16, and a booster pump 12 is installed on the surface of the circulation pipe 11. An industrial hot air blower 13 is fixedly installed on the side of the cleaning tank 1, and the air outlet of the industrial hot air blower 13 is connected to an air supply pipe 14. The air supply pipe 14 passes through the draining and drying chamber 17 and is connected to a blower hood 18. The cleaning tank 1 is made of 304 stainless steel, integrally stamped and formed with a thickness of 8mm, possessing good corrosion resistance and load-bearing capacity, and is suitable for cleaning engine blocks of different specifications. A corridor truss 2 is fixedly installed above the cleaning tank 1 using a full welding process. This truss is welded from Q235 steel, with an inverted U-shaped cross-section, an opening width of 1.5m, and a height of 1.2m, providing ample space for subsequent movement of the lifting frame. The inner top surface of the corridor truss 2 is symmetrically fixed with M12 bolts. There is an I-beam rail 3 (model I14 I-beam), the length of which is the same as that of the cleaning pool 1, laid along the length of the cleaning pool 1, with bolt spacing of 500mm to ensure the rail is securely installed; a chain hoist 4 (rated lifting capacity 2t) is connected to the I-beam rail 3 via pulley blocks and chain drive, the chain is made of 20Mn2 material, which is wear-resistant and has high tensile strength, and the bottom hook 5 of the chain hoist 4 is made of forged steel with a galvanized surface for rust prevention; an auto parts lifting frame 6 is suspended below the chain hoist 4, for auto parts The lifting frame 6 is a stainless steel frame structure. Four hanging lugs 7 (each lug is 8mm thick, 100mm x 50mm, and has a 20mm hole diameter) are welded to the four corners of the top surface. Each lug 7 is secured with a steel wire rope 8 (8mm diameter, breaking strength ≥ 50kN) via a rope buckle. One end of the steel wire rope 8 is connected to the hook 5 of the chain hoist 4. Through the lifting and lowering of the chain hoist 4 and its movement on the rails, the automotive parts lifting frame 6 can be transferred between different workstations; the middle of the cleaning pool 1... The ultrasonic cleaning chamber 15 (1.2m long, 0.8m wide, and 1m deep) is recessed downwards. The left side is the draining and drying chamber 17, and the right side is the spraying chamber 16. The three chambers are symmetrical and independent. The bottom of the ultrasonic cleaning chamber 15 is equipped with 25 transducers 10 (model PZT-4 piezoelectric ceramic transducers, operating frequency 40kHz) in a 5×5 rectangular array. The side of the cleaning tank 1 is fixed with an ultrasonic generator 9 (output power 1m) that is electrically connected to the transducers 10 through a waterproof junction box.A 5kW generator (with stepless power adjustment) converts electrical energy into high-frequency vibration, which is then transmitted to the cleaning fluid via transducer 10, forming microbubbles that impact the dirt on the cylinder surface. A circulation pipe 11 (made of 304 stainless steel, DN40 diameter) is fixedly installed on the outer wall of the spray chamber 16 using pipe clamps. A booster pump 12 (15m head, 10m³ / h flow rate) is connected in series on the surface of the circulation pipe 11, enabling the recycling of the cleaning fluid. An industrial hot air blower 13 (electrically heated) is also fixedly installed on the side of the cleaning tank 1 using a bracket. The hot air blower has a power of 3kW and a temperature control range of 50-80℃. The outlet of the hot air blower is connected to an air supply duct 14 (PPR material, DN80 diameter, 50mm thick rock wool insulation) via a flange. The air supply duct 14 runs through the side wall of the draining and drying chamber 17 and connects to a strip-shaped blower hood 18 (length equal to the width of the draining and drying chamber 17, with a louvered outlet). The hot air generated by the hot air blower is delivered to the blower hood 18 through the duct to quickly dry the cleaned cylinder. The specific model of the chain hoist 4 is: LODESTAR electric chain hoist (2T single chain) from CM Corporation (USA). The electrical components designed in this patent are only used; their structure and function have not been improved. The setting method, installation method, and electrical connection method can be easily understood by those skilled in the art by following the instructions for use; therefore, they will not be elaborated upon here.

[0023] Please refer to Figure 1 , Figure 2 and Figure 4 There are two sets of circulation pipes 11 and booster pumps 12, and the two sets of circulation pipes 11 and booster pumps 12 are symmetrically arranged about the vertical center line of the spray chamber 16. The upper end of each circulation pipe 11 is connected to the comb tooth section 20, and the lower end of each circulation pipe 11 is connected to the spray chamber 16. A circular perforated plate 22 is embedded in the end face of each branch pipe of the comb tooth section 20, and an inclined mounting seat 23 is welded to the surface of each branch pipe of the comb tooth section 20. A flushing nozzle 24 is sealed on the end face of the inclined mounting seat 23, and the flushing nozzle 24 is facing the vehicle parts hanging frame 6.

[0024] To ensure thorough cleaning without any blind spots, two sets of circulation pipes 11 and booster pumps 12 are installed, symmetrically distributed about the vertical centerline of the spray chamber 16 (installed on the inner walls of the left and right sides of the spray chamber 16, 300mm from the bottom of the chamber). The upper end of each circulation pipe 11 is connected to a comb-tooth section 20 via a tee connector, while the lower end is connected to the bottom of the spray chamber 16 via a flange, forming a cleaning fluid circulation loop. Each branch pipe of the comb-tooth section 20 has a circular perforated plate 22 (made of stainless steel, 3mm thick, 5mm diameter, 8mm hole spacing) embedded in its end face, which serves to divert the circulating fluid. To avoid uneven spraying due to excessive local pressure, each branch pipe of the comb section 20 is fixed with an oblique mounting seat 23 (with a right-angled triangle cross-section, short right-angle side 50mm, long right-angle side 80mm, and hypotenuse 94mm) by welding. The mounting seat is made of stainless steel of the same material as the branch pipe, and the weld is polished smooth to prevent liquid accumulation and rust. The end face of the oblique mounting seat 23 is fitted with a flushing nozzle 24 through a threaded seal, and the nozzles are all facing the center area of ​​the auto parts hanging frame 6. The two sets of symmetrical spray structures can achieve all-round coverage of the cylinder body from top to bottom and left to right, effectively flushing away the stains and cleaning fluid remaining after ultrasonic cleaning.

[0025] Please refer to Figure 2 The air supply duct 14 is arranged in a U-shape, and each end of the air supply duct 14 is connected to a blower hood 18. The air outlets of the blower hoods 18 of the air supply duct 14 are arranged facing each other. The hot air temperature range of the industrial hot air blower 13 is 50-80℃.

[0026] To improve the efficiency of draining and drying, the air supply duct 14 is designed with a U-shaped structure. Both ends of the duct enter from the left and right side walls of the draining and drying chamber 17, respectively, and each end is connected to a blower hood 18 (0.8m in length, adapted to the width of the draining and drying chamber 17). The air outlets of the two blower hoods 18 are arranged facing each other (i.e., the left blower hood 18 blows air to the right, and the right blower hood 18 blows air to the left), forming a convection airflow. This design allows the hot air to be evenly distributed within the draining and drying chamber 17, avoiding dead zones in drying. Simultaneously, the convection airflow accelerates the evaporation of moisture from the surface of the chamber, shortening the drying time to 5-8 minutes. The hot air temperature is controlled at 50-80℃, ensuring rapid drying while preventing high-temperature damage to the seals or coatings on the chamber surface. Furthermore, the U-shaped structure of the air supply duct reduces wind resistance, ensuring consistent airflow at both ends of the blower hoods 18 (outlet air velocity ≥5m / s), further improving drying uniformity. Please refer to Figure 1 and Figure 2The ultrasonic cleaning chamber 15, spray chamber 16 and drain drying chamber 17 are the same size, and the size of the ultrasonic cleaning chamber 15, spray chamber 16 and drain drying chamber 17 is larger than the size of the auto parts hanging frame 6. The lower side of the ultrasonic cleaning chamber 15, spray chamber 16 and drain drying chamber 17 are respectively connected to drain pipes 19.

[0027] To ensure the smooth entry and exit of the automotive parts lifting frame 6 into each cavity, and that each cavity functions independently, the ultrasonic cleaning cavity 15, spray cavity 16, and dewatering and drying cavity 17 are all identical in size (1.2m long, 0.8m wide, and 1m deep). Furthermore, the length, width, and height of each cavity are 100mm larger than the automotive parts lifting frame 6 (1.1m long, 0.7m wide, and 0.6m high), with a 50mm clearance on each side to prevent collisions with the cavity walls during frame movement. Additionally, a drain pipe 19 (material 30) is connected to the lower side of each of the three cavities (100mm from the cavity bottom) via a flange. 4. Stainless steel (DN50 diameter). A PN1.0 flange (material identical to drain pipe 19) is fixed to the end of drain pipe 1 furthest from cleaning tank 1 for easy connection to an external wastewater treatment system or circulating water tank. Nitrile rubber gaskets are used between the flanges to ensure a leak-proof seal. Stainless steel ball valves (DN50, manual operation) are also installed in series on the surface of drain pipe 19, allowing individual control of drainage from each chamber. For example, wastewater from the ultrasonic cleaning chamber can be directly discharged to the wastewater treatment end, while clean water from the spray chamber can be returned to the circulating water tank for reuse, achieving graded utilization of water resources and reducing energy consumption. Please refer to Figure 1 and Figure 2 A set of reinforcing blocks are welded to the left and right sides inside the corridor truss 2. The reinforcing blocks are composed of steel pads and triangular blocks integrally formed on their top surfaces. The steel pads of the reinforcing blocks are welded to the top surface of the cleaning pool 1.

[0028] To enhance the load-bearing stability of the corridor truss 2 and prevent deformation due to the suspension of the automotive parts lifting frame 6 and the cylinder (total weight approximately 1.5t), a set of reinforcing blocks (3 on each side, evenly distributed along the length of the truss, spaced 1.5m apart) are welded to the left and right sides inside the corridor truss 2. The reinforcing blocks consist of two parts: a steel pad at the bottom and a triangular block integrally formed with the pad at the top. The hypotenuse of the triangular block is welded to the inner inclined wall of the corridor truss 2, and the steel pad is fixed to the top surface of the cleaning tank 1 by full welding. The welding adopts CO2 gas shielded welding with a weld height of 8mm. After welding, the flaw detection is performed to ensure that there are no false welds or missing welds. Through the supporting effect of the triangular block, the vertical load borne by the truss can be converted into a horizontal component force and transferred to the cleaning tank 1, which greatly improves the bending resistance of the truss and extends the overall service life of the equipment.

[0029] Please refer to Figure 3The inner side of the auto parts lifting frame 6 is divided into multiple receiving cavities 21 by cross-shaped partitions, and the size of the multiple receiving cavities 21 is adapted to the size of the car engine cylinder block.

[0030] To prevent multiple engine blocks from colliding and scratching each other during the cleaning process, the inner side of the auto parts lifting frame 6 is divided into four independent receiving chambers 21 by a cross-shaped partition (the same material as the lifting frame, 3mm thick). Each receiving chamber 21 is 500mm long, 400mm wide, and 350mm high. The edges of the cross-shaped partition are fully welded to the inner wall of the lifting frame, and the weld seams are ground smooth to prevent scratching the cylinder surface. The dimensions of the receiving chambers 21 are precisely designed to match the dimensions of common 4-cylinder and 6-cylinder automotive engine blocks (such as the Volkswagen EA888 and Toyota A25A cylinder blocks). After the cylinder is placed, the gap on one side is about 20mm, which ensures that the cylinder is placed stably and allows the cleaning fluid and hot air to fully contact the cylinder surface, avoiding incomplete cleaning or drying due to insufficient gaps. At the same time, the partitioned design also makes it easier for operators to place different types of cylinders separately, improving work efficiency.

[0031] Please refer to Figure 1 and Figure 2 The cross section of the corridor truss 2 is an inverted U-shaped structure, and the I-shaped steel rails 3 inside the corridor truss 2 are set along the length of the cleaning pool 1.

[0032] The cross-section of the corridor truss 2 is an inverted U-shaped structure, with its opening width matching the width of the cleaning tank 1 (1.5m) and its height of 1.2m. This structural design ensures the overall rigidity of the truss while providing ample space for the lifting and moving of the auto parts lifting frame 6, preventing interference between the lifting frame and the truss during transport. The I-shaped steel rails 3 inside the corridor truss 2 are laid along the length of the cleaning tank 1, and the two ends of the rails are fixed by limit blocks to prevent the pulleys from slipping off the rails. The connection between the rails and the inner top surface of the truss is made of M12 expansion bolts, with a fixing point set every 500mm to ensure that the rails are installed flat and reduce the frictional resistance when the pulleys move. Through the cooperation of the I-shaped steel rails 3 and the chain hoist 4, the auto parts lifting frame 6 can move linearly above the ultrasonic cleaning chamber 15, the spray chamber 16, and the dewatering and drying chamber 17, with a movement accuracy of ±5mm, meeting the requirements of automated continuous operation.

[0033] Please refer to Figure 1 and Figure 4 The cross-section of the inclined mounting base 23 is a right-angled triangle structure, and a threaded interface is provided on the shorter inclined side of the inclined mounting base 23 corresponding to the flushing nozzle 24.

[0034] The inclined mounting base 23 has a right-angled triangular cross-section, which has the advantages of high stability and strong impact resistance. It can effectively withstand the reaction force (about 50N) generated by the flushing nozzle 24 during operation, preventing the nozzle from loosening or shifting after long-term use. The shorter inclined side of the inclined mounting base 23 is provided with a G1 / 2 pipe thread interface corresponding to the flushing nozzle 24. The inner wall of the interface is machined with a sealing groove. During installation, it is sealed to the nozzle with PTFE tape to prevent the cleaning fluid from leaking. The welding of the inclined mounting base 23 and the branch pipe of the comb part 20 adopts the fillet welding process. The weld length covers the entire bottom edge of the mounting base. After welding, it is pickled and passivated to improve corrosion resistance. In addition, the inclined angle of the inclined mounting base 23 is designed to be 60° (the angle with the horizontal direction). This angle allows the spray range of the flushing nozzle 24 to just cover the top, sides and corners of the inner cylinder of the automotive parts hanger 6, ensuring no cleaning blind spots.

[0035] Please refer to Figure 1 and Figure 2 A flange is fixed to the end of the drain pipe 19 away from the cleaning pool 1, and a valve is installed on the surface of the drain pipe 19.

[0036] To facilitate the installation, maintenance, and connection of the drain pipe 19, a flange (specification PN1.0, DN50, material 304 stainless steel) is welded to the end of the drain pipe 19 away from the cleaning tank 1. The sealing surface of the flange is a raised face structure, and it is equipped with a nitrile rubber sealing gasket (thickness 3mm) to effectively prevent water leakage at the pipe joint. A stainless steel ball valve (model Q11F-16P) is installed on the surface of the drain pipe 19 near the flange. The valve handle is designed with plastic wrapping, which is non-slip and easy to operate, and can realize the quick opening and closing of the pipeline.

[0037] Please refer to Figure 1 and Figure 3 Stainless steel mesh is welded and installed on the bottom surface and multiple sides of the auto parts hanging frame 6, and multiple hanging ears 7 are distributed at the four corners of the top surface of the auto parts hanging frame 6.

[0038] To ensure that the cleaning fluid and hot air can smoothly penetrate the auto parts lifting frame 6 and make full contact with the cylinder, stainless steel mesh (material 304, mesh size 10×10mm, wire diameter 1.2mm) is welded and fixed to the bottom and four sides of the auto parts lifting frame 6. The edges of the stainless steel mesh are fixed to the lifting frame using a spot welding process with a weld spacing of 30mm. After welding, the burrs on the edges are ground smooth to prevent scratches to operators or the cylinder. This specification of stainless steel mesh can ensure good permeability (open area ≥80%) and can bear the weight of the cylinder (single mesh load capacity ≥500kg) to avoid deformation. Four hanging ears 7 are evenly distributed at the four corners of the top surface of the auto parts lifting frame 6. This symmetrical distribution can make the force on the lifting frame even when it is suspended, and keep it in a horizontal state during the lifting process (tilt angle ≤1°), effectively preventing the cylinder from slipping during transportation and improving the safety of operation.

[0039] Working principle: During use, the operator places the 1-4 car engine blocks to be cleaned (adapted to different specifications) into the four receiving cavities 21 of the auto parts lifting frame 6 (separated by cross-shaped partitions to avoid collisions). After closing the lifting frame's protective door, the operator activates the horizontal movement function of the chain hoist 4: the chain hoist 4 moves along the length of the cleaning tank 1 via the pulley system on the I-shaped steel rail 3, transferring the lifting frame to directly above the ultrasonic cleaning chamber 15. Then, using the lifting function of the chain hoist 4, the lifting frame is slowly lowered into the ultrasonic cleaning chamber 15 (the bottom of the lifting frame is 100mm from the bottom of the chamber to ensure the cleaning fluid completely submerges the cylinder). The ultrasonic generator 9 on the side of the ultrasonic cleaning chamber 15 (output power 1.5kW, infinitely adjustable) is then activated, converting electrical energy into… A 40kHz high-frequency electrical signal is transmitted to 25 transducers 10 at the bottom of the cavity. The transducers 10 convert the electrical signal into mechanical vibrations, which are transmitted through the cleaning fluid (usually a water-based cleaning agent) to the surface and internal crevices of the cylinder, forming countless tiny bubbles (cavitation effect). The rapid generation and collapse of these bubbles generate instantaneous impact force (up to several hundred atmospheres), stripping away oil, carbon deposits, and metal debris from the cylinder surface. This stage lasts 10-15 minutes (adjusted according to the severity of the dirt), ensuring that stubborn dirt in the tiny crevices is completely removed. After ultrasonic cleaning, the chain hoist 4 raises the lifting frame above the ultrasonic cleaning chamber 15, transports it directly above the spray chamber 16, and slowly lowers it (the bottom of the lifting frame is 200mm from the bottom of the spray chamber 16). Two sets of booster pumps 12 (15m head, 10m³ / h flow rate) are activated. The cleaning fluid in the spray chamber 16 is transported to the branch pipe of the comb section 20 through the circulation pipe 11. After being diverted by the circular perforated plate 22 (5mm aperture), it is sprayed out at a pressure of 0.8MPa through the high-pressure fan-shaped nozzles. The two sets of symmetrical nozzles (spraying in opposite directions) form an all-round rinsing area, thoroughly rinsing away the dirt, debris and cleaning agent remaining on the surface of the cylinder. This stage lasts for 3-5 minutes. The cleaning fluid after rinsing flows back to the bottom of the spray chamber 16 and is reused through the circulation pipe 11. After spraying is completed, the chain hoist 4 transfers the lifting frame to the top of the draining and drying chamber 17 and lowers it into the chamber (a 50mm gap is reserved between the lifting frame and the chamber wall). The industrial hot air blower 13 is then started. The hot air blower heats the air to 50-80℃ and delivers it to the left and right side blower hoods 18 through the U-shaped air supply pipe 14 (wrapped with rock wool insulation to reduce heat loss). The opposing blower hoods 18 form a convective airflow field, and the hot air is evenly blown onto the surface of the cylinder to accelerate moisture evaporation. At the same time, the stainless steel mesh (opening rate ≥80%) on the side and bottom of the hanging frame ensures that the hot air penetrates the hanging frame, achieving simultaneous drying of the inner and outer surfaces of the cylinder. This stage lasts for 5-8 minutes. After drying, the moisture content of the cylinder surface is ≤1%. After drying, the chain hoist 4 lifts the hanging frame above the drain drying chamber 17 and transfers it to the unloading area outside the device to remove the clean cylinder. Then, the chain hoist 4 drives the empty hanging frame back to the initial loading position to prepare for the next batch of cleaning operations.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An ultrasonic automotive engine cylinder block cleaning device, comprising a cleaning tank (1), characterized in that: A corridor truss (2) is welded and installed above the cleaning pool (1), and an I-shaped steel rail (3) is fixedly installed on the top surface of the inner side of the corridor truss (2). A chain hoist (4) is driven by pulleys and chains on the I-shaped steel rail (3), and a hook (5) is fixedly installed at the bottom of the chain hoist (4). An auto parts lifting frame (6) is set below the chain hoist (4), and multiple hanging ears (7) are welded to the top surface of the auto parts lifting frame (6). A steel wire rope (8) is installed on each hanging ear (7) of the auto parts lifting frame (6). One end of the steel wire rope (8) is connected to the hook (5) of the chain hoist (4). An ultrasonic cleaning chamber (15) is opened in the middle of the cleaning pool (1). A draining and drying chamber (17) is provided on the left side of the cleaning tank (1), and a spray chamber (16) is provided on the right side of the cleaning tank (1). Several transducers (10) are installed in a rectangular array at the bottom of the ultrasonic cleaning chamber (15). An ultrasonic generator (9) electrically connected to the transducer (10) is installed on the side of the cleaning tank (1). A circulation pipe (11) is installed on the side of the spray chamber (16), and a booster pump (12) is installed on the surface of the circulation pipe (11). An industrial hot air blower (13) is fixedly installed on the side of the cleaning tank (1), and an air supply pipe (14) is connected to the air outlet of the industrial hot air blower (13). The air supply pipe (14) passes through the draining and drying chamber (17) and is connected to a blower hood (18).

2. The ultrasonic automotive engine cylinder block cleaning device according to claim 1, characterized in that: Two sets of circulation pipes (11) and booster pumps (12) are provided, and the two sets of circulation pipes (11) and booster pumps (12) are symmetrically arranged about the vertical center line of the spray chamber (16). The upper end of each circulation pipe (11) is connected to a comb tooth part (20), and the lower end of each circulation pipe (11) is connected to the spray chamber (16). A circular perforated plate (22) is embedded in the end face of each branch pipe of the comb tooth part (20), and an inclined mounting seat (23) is welded to the surface of each branch pipe of the comb tooth part (20). A flushing nozzle (24) is sealed on the end face of the inclined mounting seat (23), and the flushing nozzle (24) is set towards the auto parts hanging frame (6).

3. The ultrasonic automotive engine cylinder block cleaning device according to claim 1, characterized in that: The air supply duct (14) is arranged in a U-shape, and each end of the air supply duct (14) is connected to a blower hood (18). The air outlets of the blower hoods (18) of the air supply duct (14) are arranged facing each other. The hot air temperature range of the industrial hot air blower (13) is 50-80℃.

4. The ultrasonic automotive engine cylinder block cleaning device according to claim 1, characterized in that: The ultrasonic cleaning chamber (15), spray chamber (16) and drain drying chamber (17) are the same size, and the size of the ultrasonic cleaning chamber (15), spray chamber (16) and drain drying chamber (17) is larger than the size of the auto parts hanging frame (6). The lower side of the ultrasonic cleaning chamber (15), spray chamber (16) and drain drying chamber (17) are respectively connected to drain pipes (19).

5. The ultrasonic automotive engine cylinder block cleaning device according to claim 1, characterized in that: The corridor truss (2) has a set of reinforcing blocks welded to the left and right sides respectively. The reinforcing blocks are made of steel pads and triangular blocks integrally formed on their top surfaces. The steel pads of the reinforcing blocks are welded to the top surface of the cleaning pool (1).

6. The ultrasonic automotive engine cylinder block cleaning device according to claim 1, characterized in that: The inner side of the auto parts lifting frame (6) is divided into multiple receiving cavities (21) by a cross-shaped partition, and the size of the multiple receiving cavities (21) is adapted to the size of the automobile engine cylinder block.

7. The ultrasonic automotive engine cylinder block cleaning device according to claim 1, characterized in that: The cross section of the corridor truss (2) is an inverted U-shaped structure, and the I-shaped steel rail (3) inside the corridor truss (2) is set along the length of the cleaning pool (1).

8. An ultrasonic automotive engine cylinder block cleaning device according to claim 2, characterized in that: The cross-section of the inclined mounting base (23) is a right-angled triangle structure, and the shorter inclined side of the inclined mounting base (23) is provided with a threaded interface corresponding to the flushing nozzle (24).

9. An ultrasonic automotive engine cylinder block cleaning device according to claim 4, characterized in that: A flange is fixed to the end of the drain pipe (19) away from the cleaning pool (1), and a valve is installed on the surface of the drain pipe (19).

10. An ultrasonic automotive engine cylinder block cleaning device according to claim 1, characterized in that: The bottom surface and multiple sides of the auto parts hanging frame (6) are welded with stainless steel mesh, and multiple hanging ears (7) are distributed at the four corners of the top surface of the auto parts hanging frame (6).

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