A device for vacuum drying a cylinder block after cleaning

Abstract

The application discloses a kind of vacuum dry devices after cylinder body cleaning, belong to engine cylinder body cleaning technical field, the vacuum dry device after cylinder body cleaning, including a pair of raceway frame, power system and vacuum pump cover, a pair of raceway frame middle is provided with rack, lifting vacuum chamber is provided on the rack, indoor motorized raceway is fixedly connected on the rack, one side motorized raceway is fixedly connected on the raceway frame with feeding machine, another side motorized raceway is fixedly connected on the raceway frame with discharging machine, raceway drive mechanism is fixedly connected on the raceway frame.The application utilizes the physical principle that water content boiling point is substantially reduced under vacuum environment, so that the residual moisture in the cavity and surface of cylinder body can be quickly vaporized at room temperature, without heating, efficient drying can be realized, and energy consumption is substantially reduced.

Description

Technical Field

[0001] This invention belongs to the field of engine cylinder block cleaning technology, specifically relating to a vacuum drying device for cleaning cylinder blocks. Background Technology

[0002] The cylinder block is one of the core components of an engine, featuring a complex internal cavity structure including numerous oil passages, water passages, air holes, and deep bores. During the machining of the cylinder block, a cleaning process is required to remove impurities such as metal filings and oil stains generated during processing, ensuring the cleanliness of the engine and the quality of assembly. After cleaning, a large amount of moisture remains inside the cylinder block and on its surface. If this residual moisture is not removed promptly and effectively, it will seriously affect the smooth progress of subsequent machining or assembly processes, and may even lead to quality problems such as rust in the engine.

[0003] Currently, the main drying methods after cylinder block cleaning are as follows: 1. Manually blowing the cylinder block surface and cavities with a handheld compressed air gun. This method has drawbacks such as high labor intensity, low efficiency, and unstable drying effect. Furthermore, the compressed air blowing process generates significant noise, adversely affecting the occupational health of operators. Simultaneously, manual drying cannot guarantee the thorough drying of complex internal cavities of the cylinder block, especially in deep holes and blind holes where moisture is difficult to remove effectively; 2. Evaporating moisture through heating, but this drying process consumes high energy, takes a long time, and the high temperature may adversely affect the machined surfaces of the cylinder block; 3. Setting up fixed drying stations on the cleaning production line, using multiple air nozzles to blow specific parts of the cylinder block. While this method improves automation to some extent, the drying effect is limited by the nozzle placement and angle, and it is still difficult to achieve complete drying for the complex internal cavities of the cylinder block. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a vacuum drying device for cleaning cylinder blocks.

[0005] The technical solution adopted to solve the above technical problems is: a vacuum drying device for cleaning cylinder blocks, including a pair of roller frames, an electrical system and a vacuum pump cover. A frame is set in the middle of the pair of roller frames. A lifting vacuum chamber is set on the frame. An indoor motorized roller is fixedly connected to the frame. A feeding motorized roller is fixedly connected to one side of the roller frame, and a discharging motorized roller is fixedly connected to the other side of the roller frame. A roller drive mechanism is fixedly connected to the roller frame.

[0006] Through the above technical solution, a pair of roller frames are set on both sides of the equipment to form longitudinal support, and the frame is set between the two roller frames as the central load-bearing structure. The lifting vacuum chamber and the indoor motorized roller are integrated on the frame. The loading motorized roller and the unloading motorized roller are respectively installed on the roller frames on the front and rear sides. The roller drive mechanism is fixed on the roller frame to provide power to the roller. The whole forms a continuous automated conveying channel from front-end loading, middle vacuum drying to rear-end unloading. The structure is compact and reasonable, and the division of labor of each functional module is clear, providing a reliable structural foundation for the automated vacuum drying operation of the cylinder body.

[0007] Furthermore, both the loading and unloading motorized roller conveyors are driven by roller conveyor drive mechanisms, and an intermediate drive mechanism is fixedly connected to the frame. The indoor motorized roller conveyor is driven by the intermediate drive mechanism.

[0008] Through the above technical solution, the loading and unloading motorized roller conveyors are driven by roller drive mechanisms to ensure the consistency of the conveying action when the workpiece enters and exits the vacuum chamber; while the indoor motorized roller conveyor is driven by an independent intermediate drive mechanism. Its start and stop are not constrained by the loading and unloading roller conveyors. It can remain completely stationary during the vacuum drying process and move independently when loading and unloading. This effectively avoids the timing conflict between the lifting of the vacuum chamber and the operation of the roller conveyor, realizes the independent control and precise coordination of the three conveying systems, and greatly improves the accuracy and reliability of the conveying positioning.

[0009] Furthermore, an inflation valve assembly is provided on the lifting vacuum chamber, and a pneumatic ball valve is fixedly connected to the inflation valve assembly. A pneumatic system is fixedly connected inside the frame.

[0010] Through the above technical solution, the air-filling valve assembly is fixed on the lifting vacuum chamber and connected to the pneumatic ball valve. During the vacuuming process, the pneumatic ball valve can be quickly opened and closed to periodically fill the vacuum chamber with natural air, causing regular fluctuations in the vacuum level and forming a pulsed air-filling disturbance effect. This effectively destroys the adhesion of moisture on the workpiece surface. Combined with subsequent deep vacuuming, the thoroughness of drying is significantly improved through multiple cycles. The pneumatic system is integrated into the frame to provide air supply for each pneumatic actuator, simplifying external pipeline connections and improving the integration and operational reliability of the equipment.

[0011] Furthermore, a rotary vane vacuum pump is fixedly connected inside the vacuum pump cover, and a pipeline is fixedly connected to the output end of the rotary vane vacuum pump. The end of the pipeline away from the vacuum pump cover is fixedly connected to the lifting vacuum chamber, and a vacuum chamber fixing frame is fixedly connected to the frame.

[0012] Through the above technical solution, the rotary vane vacuum pump is fixed inside the vacuum pump cover and connected to the lifting vacuum chamber through pipelines, forming a complete vacuum airflow channel. The pipelines are made of stainless steel corrugated flexible hoses, which have excellent vacuum sealing and a certain degree of flexibility, and can effectively isolate the vibration transmission generated during the operation of the vacuum pump, avoiding the adverse effects of vibration on the sealing of the vacuum chamber and the positioning accuracy of the workpiece. The vacuum pump cover also plays the role of safety protection and guiding the heat dissipation airflow, ensuring the safe operation and heat dissipation efficiency of the vacuum pump.

[0013] Furthermore, a foamed silicone sealing strip is provided between the vacuum chamber fixing frame and the lifting vacuum chamber.

[0014] Through the above technical solution, the foamed silicone sealing strip is continuously arranged circumferentially along the joint surface between the vacuum chamber fixing frame and the lifting vacuum chamber. When the lifting vacuum chamber is lowered into place, the sealing strip is pressed between the two. Relying on the excellent elasticity and resilience of the foamed silicone material, a reliable vacuum seal is formed at the joint surface, ensuring that the vacuum chamber does not leak during the vacuuming process, maintaining the required vacuum level, and ensuring the stability and consistency of the vacuum drying effect.

[0015] Furthermore, a pneumatic baffle mechanism is fixedly connected to one end of the feeding motorized roller conveyor near the lifting vacuum chamber.

[0016] With the above technical solution, the pneumatic baffle mechanism is set at the discharge end of the feeding motorized roller conveyor and in front of the vacuum chamber inlet. When the pneumatic baffle mechanism is activated, its baffle rod extends above the roller conveyor to block the workpieces behind from continuing to move forward, ensuring that only one cylinder body enters the vacuum chamber at a time. This effectively avoids equipment damage and malfunctions caused by workpiece overlap or collision, and improves the safety and reliability of equipment operation.

[0017] Furthermore, the power system provides a stable power supply for all electrical equipment, and the pneumatic system provides clean compressed air for the cylinders, pneumatic baffle mechanisms, pneumatic ball valves, and inflation valve assembly actuators of the lifting vacuum chamber.

[0018] Through the above technical solution, the power system is connected to each electrical device via cables, providing a stable power supply to all electrical equipment such as vacuum pumps, drive motors, sensors, solenoid valves, and control systems. The PLC controller coordinates the timing of actions of each mechanism through preset programs. The pneumatic system is connected to each pneumatic actuator via air pipes, providing clean and stable compressed air to the lifting cylinders of the vacuum chamber, the pneumatic baffle mechanism, the pneumatic ball valves, and the inflation valve assembly. The coordinated operation of the power and pneumatic systems provides a complete power guarantee and control foundation for the fully automated operation of the equipment.

[0019] The beneficial effects of the present invention are as follows: (1) The present invention continuously evacuates the sealed vacuum chamber by a rotary vane vacuum pump, so that the vacuum chamber is maintained at a high negative pressure. Utilizing the physical principle that the boiling point of water is greatly reduced in a vacuum environment, the residual water in the cylinder body cavity and surface can be quickly vaporized and evaporated at room temperature. Efficient drying can be achieved without heating, which greatly reduces energy consumption. At the same time, during the vacuuming process, the device periodically pulses gas into the vacuum chamber through the cooperation of the gas charging valve group and the pneumatic ball valve, so that the vacuum degree in the chamber fluctuates regularly. Each gas charging causes the water adhering to the surface of the workpiece to be disturbed and peeled off. Combined with the subsequent deep vacuuming, through the cycle of "vacuuming, pulse charging, and vacuuming again", the adhesion state of water on the surface of the workpiece can be effectively destroyed, so that the residual water hidden in the complex inner cavity of the cylinder body, oil passage, water passage, deep hole and blind hole and other hard-to-reach parts can be completely discharged. Compared with the current In some technologies, the single continuous vacuuming or simple heating drying method significantly improves the thoroughness and uniformity of drying, effectively eliminating the risk of water stains and subsequent corrosion; (2) This invention independently drives the loading motorized roller and unloading motorized roller through the roller drive mechanism, and at the same time, the indoor motorized roller is independently driven by the intermediate drive mechanism, realizing the independent control and precise coordination of the three conveying systems of the loading area, vacuum working area and unloading area, ensuring the smooth transition and precise positioning of the cylinder between each station, and effectively avoiding workpiece jamming or collision caused by asynchronous conveying. The entire working process is automatically coordinated by the PLC control system, with real-time position detection by photoelectric switches set at each station, and electrical interlock protection between each moving part, realizing fully automated unmanned operation from loading, vacuum drying to unloading, while ensuring the safe operation of the equipment, greatly improving production efficiency, reducing the labor intensity of operators, and fully meeting the high-speed and continuous production needs of modern production lines. Attached Figure Description

[0020] Figure 1 This is a front view of the present invention;

[0021] Figure 2 This is a side view of the present invention;

[0022] Figure 3 This is a top view of the present invention.

[0023] Reference numerals: 1. Roller frame; 2. Feeding motorized roller; 3. Pneumatic baffle mechanism; 4. Vacuum chamber fixing frame; 5. Indoor motorized roller; 6. Lifting vacuum chamber; 7. Roller drive mechanism; 8. Foamed silicone sealing strip; 9. Frame; 10. Unloading motorized roller; 11. Intermediate drive mechanism; 12. Pneumatic ball valve; 13. Inflation valve assembly; 14. Rotary vane vacuum pump; 15. Vacuum pump cover; 16. Piping; 17. Pneumatic system; 18. Electrical system. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0025] like Figures 1-3 This embodiment of a cylinder block cleaning and vacuum drying device includes a pair of roller frames 1, a power system 18, and a vacuum pump cover 15. The pair of roller frames 1 are located on both sides of the device, extending longitudinally along the production line direction, serving as the basic support components of the entire device. A frame 9 is provided between the two roller frames 1, located in the central area of ​​the device, for supporting and fixing the various functional components of the vacuum working area. A lifting vacuum chamber 6 is provided on the frame 9, located above the frame 9, and driven by a cylinder to move vertically up and down. An indoor motorized roller conveyor 5 is fixedly connected to the frame 9, located inside the frame 9, for receiving and transporting cylinder blocks within the vacuum chamber.

[0026] A feeding motorized roller conveyor 2 is fixedly connected to the roller conveyor frame 1 on the front side of the equipment, used to receive the cylinder body conveyed from the previous process; a discharging motorized roller conveyor 10 is fixedly connected to the roller conveyor frame 1 on the rear side of the equipment, used to transport the dried cylinder body to the next process. Roller drive mechanisms 7 are fixedly connected to the roller conveyor frame 1. The two roller drive mechanisms 7 serve as the power source for the feeding and discharging roller conveyors, providing driving force for the operation of the roller conveyors at both ends.

[0027] An intermediate drive mechanism 11 is fixedly connected to the frame 9. The intermediate drive mechanism 11 is an independently set drive device, and the indoor motorized roller conveyor 5 is driven by the intermediate drive mechanism 11 alone. The start and stop of the indoor motorized roller conveyor 5 is not constrained by the loading motorized roller conveyor 2 and the unloading motorized roller conveyor 10. It can remain completely stationary during vacuum drying, and move independently during material feeding and discharging. This avoids the timing conflict between the lifting of the vacuum chamber and the operation of the roller conveyor, and achieves precise control of the conveying action.

[0028] An air filling valve assembly 13 is installed on the lifting vacuum chamber 6. The air filling valve assembly 13 is fixedly installed on the top or side wall of the lifting vacuum chamber 6 and is used to periodically fill the vacuum chamber with natural air during the vacuuming process. A pneumatic ball valve 12 is fixedly connected to the air filling valve assembly 13. The pneumatic ball valve 12 serves as the actuator for the air filling action. The valve is quickly opened and closed through pneumatic control, ensuring the sensitivity and reliability of the pulse air filling action.

[0029] A pneumatic system 17 is fixedly connected inside the frame 9. The pneumatic system 17 includes air source processing elements and control valve groups, providing clean and stable compressed air to the various pneumatic actuators of the equipment. A vacuum pump cover 15 is located on one side of the equipment, and a rotary vane vacuum pump 14 is fixedly connected inside the vacuum pump cover 15. The rotary vane vacuum pump 14 is the core power component of the entire vacuum system. A pipe 16 is fixedly connected to the output end of the rotary vane vacuum pump 14. The pipe 16 is made of stainless steel corrugated flexible hose, which has excellent vacuum sealing and a certain degree of flexibility, effectively isolating the vibration generated during vacuum pump operation. The end of the pipe 16 away from the vacuum pump cover 15 is fixedly connected to the lifting vacuum chamber 6, connecting the suction port of the rotary vane vacuum pump 14 to the inside of the vacuum chamber, forming a complete vacuum airflow channel. The vacuum pump cover 15 also serves as a safety protection and guides the cooling airflow. An exhaust fan is installed on the top of the cover to promptly dissipate the heat generated during vacuum pump operation.

[0030] A vacuum chamber mounting bracket 4 is fixedly connected to the frame 9. The vacuum chamber mounting bracket 4 is located above the frame 9 and is the fixed lower cavity part. The lifting vacuum chamber 6 is the upper cover part that can move up and down, and is arranged vertically opposite to the vacuum chamber mounting bracket 4. A foamed silicone sealing strip 8 is provided between the vacuum chamber mounting bracket 4 and the lifting vacuum chamber 6. The foamed silicone sealing strip 8 is continuously arranged circumferentially along the mating surface of the vacuum chamber mounting bracket 4 and the lifting vacuum chamber 6. When the lifting vacuum chamber 6 descends to its position, the foamed silicone sealing strip 8 is pressed between the two. Relying on the excellent elasticity and resilience of the foamed silicone material, a reliable vacuum seal is formed at the mating surface, ensuring that the vacuum chamber does not leak during the vacuuming process and maintaining the required vacuum level.

[0031] A pneumatic baffle mechanism 3 is fixedly connected to one end of the feeding motorized roller conveyor 2 near the lifting vacuum chamber 6. The pneumatic baffle mechanism 3 is located at the discharge end of the feeding motorized roller conveyor 2, in front of the inlet of the vacuum chamber. When the pneumatic baffle mechanism 3 is activated, its baffle rod extends above the roller conveyor to block the continued advance of the workpiece behind, ensuring that only one cylinder body enters the vacuum chamber at a time, avoiding workpiece overlap or collision.

[0032] The power system 18 is located in an independent electrical control cabinet. The power system 18 is connected to various electrical equipment via cables, providing a stable power supply to all electrical equipment such as the rotary vane vacuum pump 14, the motor of the roller drive mechanism 7, the motor of the intermediate drive mechanism 11, various photoelectric switches and sensors, solenoid valves, and the control system. The control of the entire device is completed by a PLC controller, which is integrated in the electrical cabinet of the power system 18. The PLC controller coordinates the action sequence of each mechanism through a preset control program to achieve fully automated operation.

[0033] The working principle of this embodiment is as follows: When the equipment is in standby mode, the lifting vacuum chamber 6 is in the raised and open position, and the loading motorized roller 2, the indoor motorized roller 5, and the unloading motorized roller 10 are all in a stopped state. The power system 18 provides power to the equipment, the pneumatic system 17 provides compressed air, and the rotary vane vacuum pump 14 is in standby mode. At this time, the tilting machine in the previous process has completed the 180-degree tilting and water-draining operation of the cylinder body.

[0034] After the cylinder body has been flipped and drained in the previous process, it is first conveyed to the feeding motorized roller conveyor 2. The feeding motorized roller conveyor 2 is supported and fixed by the roller frame 1, and its power is independently provided by the roller drive mechanism 7, which drives the roller to rotate and convey the workpiece forward. After the photoelectric switch at the front end of the feeding motorized roller conveyor 2 detects that the workpiece has arrived, the pneumatic blocking mechanism 3 is activated to block subsequent workpieces on the feeding roller conveyor, ensuring that only one cylinder body enters the vacuum chamber at a time, avoiding workpiece overlap or collision, and ensuring the safe operation of the equipment.

[0035] When the lifting vacuum chamber 6 is open and there is no workpiece inside, the loading motorized roller conveyor 2 starts, transporting the cylinder body to the indoor motorized roller conveyor 5 inside the vacuum chamber mounting frame 4. The indoor motorized roller conveyor 5 is an independently driven conveying mechanism, powered solely by the intermediate drive mechanism 11, ensuring precise and controllable positioning and conveying of the cylinder body within the vacuum chamber. After the photoelectric switch on the indoor motorized roller conveyor 5 detects that the cylinder body has been delivered to the correct position, the roller conveyor stops running, and the workpiece is accurately positioned in the working position within the vacuum chamber.

[0036] After the workpiece is in place, the lifting vacuum chamber 6 descends vertically under the drive of a cylinder, tightly fitting against the top of the vacuum chamber fixing frame 4. A foamed silicone sealing strip 8 is installed at the joint surface to ensure a vacuum seal, forming a sealed vacuum chamber cavity. The entire vacuum chamber fixing frame 4 and the lifting vacuum chamber 6 are supported by the frame 9.

[0037] After sealing, the rotary vane vacuum pump 14 starts and evacuates the sealed vacuum chamber through the pipeline 16. The rotary vane vacuum pump 14 is equipped with a vacuum pump cover 15 for safety protection and ventilation. Under vacuum negative pressure, the boiling point of residual moisture in the cylinder cavity and on the surface is greatly reduced, and it can be rapidly vaporized and evaporated at room temperature. The vaporized water vapor is then drawn out of the room by the vacuum pump with the airflow.

[0038] During the vacuuming process, the air filling valve assembly 13, controlled by the pneumatic ball valve 12, periodically fills the vacuum chamber with a small amount of natural air, causing the vacuum level to rise briefly before restarting the vacuuming process. Through multiple cycles of vacuuming, pulsed air filling, and vacuuming again, each air filling further disturbs and removes the moisture adhering to the workpiece surface, thereby more thoroughly removing residual moisture from the complex internal cavities and deep holes of the cylinder body and significantly improving the drying effect.

[0039] During this process, the power system 18 provides a stable power supply to the vacuum pump, solenoid valve, sensor and other electrical equipment; the pneumatic system 17 provides clean compressed air to the cylinders of the lifting vacuum chamber 6, the pneumatic baffle mechanism 3, the pneumatic ball valve 12 and the air charging valve group 13 and other actuators.

[0040] After the vacuum drying time is reached, the inflation valve assembly 13 opens to ventilate the vacuum chamber, restoring the pressure inside to normal atmospheric pressure. Subsequently, the lifting vacuum chamber 6 rises and opens under cylinder drive, activating the indoor motorized roller conveyor 5 to transport the dried cylinder body to the unloading motorized roller conveyor 10. The unloading motorized roller conveyor 10 is also supported by the roller frame 1, and its power is driven by another roller drive mechanism 7, transporting the cylinder body to the next process, completing a full work cycle.

[0041] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. A vacuum drying device for cylinder block cleaning, comprising a pair of roller frames (1), an electrical system (18), and a vacuum pump cover (15), characterized in that: A frame (9) is provided in the middle of a pair of roller frames (1). A lifting vacuum chamber (6) is provided on the frame (9). An indoor motorized roller (5) is fixedly connected to the frame (9). A feeding motorized roller (2) is fixedly connected to one side of the roller frame (1). A discharging motorized roller (10) is fixedly connected to the other side of the roller frame (1). A roller drive mechanism (7) is fixedly connected to the roller frame (1).

2. The vacuum drying device for cylinder block cleaning according to claim 1, characterized in that, The loading motorized roller conveyor (2) and the unloading motorized roller conveyor (10) are both driven by the roller conveyor drive mechanism (7). An intermediate drive mechanism (11) is fixedly connected to the frame (9). The indoor motorized roller conveyor (5) is driven by the intermediate drive mechanism (11).

3. The vacuum drying device for cylinder block cleaning according to claim 1, characterized in that, The lifting vacuum chamber (6) is equipped with an inflation valve group (13), and a pneumatic ball valve (12) is fixedly connected to the inflation valve group (13). A pneumatic system (17) is fixedly connected inside the frame (9).

4. The vacuum drying device for cylinder block cleaning according to claim 1, characterized in that, A rotary vane vacuum pump (14) is fixedly connected inside the vacuum pump cover (15). A pipeline (16) is fixedly connected to the output end of the rotary vane vacuum pump (14). One end of the pipeline (16) away from the vacuum pump cover (15) is fixedly connected to the lifting vacuum chamber (6). A vacuum chamber fixing frame (4) is fixedly connected to the frame (9).

5. The vacuum drying device for cylinder block cleaning according to claim 4, characterized in that, A foamed silicone sealing strip (8) is provided between the vacuum chamber fixing frame (4) and the lifting vacuum chamber (6).

6. The vacuum drying device for cylinder block cleaning according to claim 1, characterized in that, The feeding motorized roller (2) is fixedly connected to a pneumatic baffle mechanism (3) at one end near the lifting vacuum chamber (6).

7. The vacuum drying device for cylinder block cleaning according to claim 3, characterized in that, The power system (18) provides a stable power supply for all electrical equipment, and the pneumatic system (17) provides clean compressed air for the cylinders, pneumatic baffle mechanism (3), pneumatic ball valve (12) and air filling valve group (13) actuators of the lifting vacuum chamber (6).

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