Cleaning device for hardware before heat treatment

Abstract

The utility model discloses a hardware heat treatment before cleaning device, including rectangular frame, be equipped with the spraying unit on the rectangular frame, this spraying unit is used to clean work piece, is equipped with a drying unit in this spraying unit one side, this drying unit is used to carry out drying treatment to work piece, this spraying unit includes the spraying box of being equipped with on the rectangular frame, the spraying mechanism of being equipped with on the inner wall of the spraying box, the rotary drum of being equipped with in this spraying box rotation connection and the drive mechanism of being connected with this rotary drum rotation, the spraying mechanism is used to spray the cleaning liquid, the rotary drum is used to rotate work piece and accepts the washing, the drive mechanism is used to drive the rotary drum rotation, the utility model discloses through the spraying unit and makes work piece in the rotation process be pushed axial movement by helical guide vane, avoids and causes to stay and leads to overwash or not wash, has reduced the cleaning liquid consumption, the spraying mechanism makes the surface of the work piece in the drum be covered by the injection liquid, the drying unit improves the drying effect and drying efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of hardware cleaning devices, and specifically to a hardware cleaning device before heat treatment. Background Technology

[0002] Currently, the cleaning of hardware parts commonly employs technologies such as immersion cleaning, ultrasonic cleaning, and high-pressure water jet cleaning. Immersion cleaning removes contaminants through prolonged contact between chemical solvents and the workpiece. Ultrasonic cleaning utilizes the cavitation effect to efficiently remove dirt from tiny crevices. High-pressure water jet cleaning relies on high-pressure water jets to impact the workpiece surface. These technologies have formed mature application systems in fields such as automobile manufacturing, machining, and aerospace, providing basic support for industrial production and playing an important role in improving the cleanliness of metal surfaces and reducing heat treatment defect rates.

[0003] However, existing cleaning technologies, such as immersion cleaning, consume a large amount of cleaning solution. When dealing with stubborn oil stains or irregularly shaped hardware parts, the residual cleaning solution on the workpiece surface after cleaning needs to be treated separately, which affects the drying efficiency. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a pre-heat treatment cleaning device for hardware parts. In this spray unit, the screen structure of the rotating drum is combined with the spiral guide plate, so that the workpiece is pushed axially by the spiral guide plate during rotation, avoiding over-washing or under-washing due to retention. The cleaning liquid and dirt fall naturally to the bottom of the spray box through the screen holes and enter the circulation treatment device through the drain to filter and remove oil before recycling, reducing the consumption of cleaning liquid. In the spray mechanism, the main pipe and circumferential branch pipes arranged along the axis of the drum are connected, and the fan-shaped wide-angle nozzles effectively remove stubborn oil stains through the dual action of mechanical flushing and chemical dissolution, so that the spray liquid covers the surface of the workpiece inside the drum. In the drying unit, the heat conduction mechanism uses the cooperation of electric heating elements and centrifugal fans to accelerate the evaporation of moisture by convective heat transfer, thereby improving the drying effect and drying efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A pre-heat treatment cleaning device for hardware parts includes a rectangular frame with a spray unit for cleaning the workpiece. A drying unit is located on one side of the spray unit for drying the workpiece. The spray unit includes a spray box on the rectangular frame, a spray mechanism on the inner wall of the spray box, a rotating drum rotatably connected inside the spray box, and a drive mechanism rotatably connected to the rotating drum. The spray mechanism sprays cleaning fluid, the rotating drum rotates the workpiece for rinsing, and the drive mechanism drives the rotating drum to rotate. The inner wall of the rotating drum is provided with a spiral guide plate. The rotating drum includes a cleaning drum and a rotating connecting cylinder fixedly connected to the cleaning drum. The cleaning drum has a screen structure with a screen aperture smaller than the minimum size of the hardware part. The outer wall of the rotating connecting cylinder is provided with annular teeth that mesh with the output end of the drive mechanism.

[0006] The pitch of the spiral guide plate is 0.8–1.2 times the inner diameter of the drum, and the cross-section of the plate is rectangular.

[0007] The drive mechanism includes a drive motor, an output shaft, an output gear set, and a bearing housing. The output gear set includes a gearbox, a first output tooth disposed in the gearbox, and a second output tooth meshing with the first output tooth through a gear housing. The second output tooth includes a primary tooth, a secondary tooth disposed on one side of the primary tooth, and a gear shaft disposed in the center. The outer diameter of the primary tooth is larger than that of the secondary tooth. The output speed of the drive motor is adjusted by the tooth difference between the primary tooth and the secondary tooth in the second output tooth.

[0008] The spraying mechanism includes a pressure pump, a main pipe connected to the outlet of the pressure pump via a connecting pipe, a circumferential branch pipe connected to the main pipe, a pipe support bolted to the spray box, and nozzles arranged at a 30° helical angle. The main pipe is arranged in a ring along the axis of the rotating drum.

[0009] The nozzle is a fan-shaped wide-angle nozzle with a spray angle of 61° to 66°.

[0010] The spray box is equipped with a drain outlet at the bottom.

[0011] The drying unit includes a movable support, a transfer mechanism mounted on the movable support, a heat conduction mechanism mounted on the transfer mechanism, and a residual liquid tank located below the transfer mechanism. The transfer mechanism is used to transfer the workpiece, the heat conduction mechanism is used to conduct hot air to the workpiece for drying, and the residual liquid tank is used to collect residual liquid dripping from the workpiece.

[0012] The transfer mechanism includes a stepper motor mounted on the movable support via a motor encoder, a drive wheel located at the output end of the stepper motor, a main drive roller located at one end of the movable support, a secondary drive roller located at the other end of the movable support, a tension belt located between the main drive roller and the secondary drive roller, a driven wheel located at one end of the main drive roller, and a drive belt connecting the drive wheel and the driven wheel.

[0013] The heat conduction mechanism includes a heating element and an air supply element.

[0014] A temperature sensor is provided on the heating element.

[0015] The beneficial effects of this utility model are as follows: 1. The screen structure of the rotating drum in the spray unit is combined with the spiral guide plate, so that the workpiece is pushed axially by the spiral guide plate during rotation, avoiding over-washing or under-washing due to retention. The cleaning liquid and dirt fall naturally to the bottom of the spray box through the screen holes and enter the circulation treatment device through the drain outlet for filtration and oil removal before being recycled, reducing the consumption of cleaning liquid. 2. The main pipe and the circumferential branch pipes arranged along the axis of the drum in the spraying mechanism are connected. Together with the fan-shaped wide-angle nozzles, they can efficiently remove stubborn oil stains through the dual action of mechanical flushing and chemical dissolution, so that the sprayed liquid covers the surface of the workpiece inside the drum. 3. The heat transfer mechanism in the drying unit uses the cooperation of electric heating elements and centrifugal fans to accelerate moisture evaporation through convection heat transfer, thereby improving the drying effect and efficiency. Attached Figure Description

[0016] Figure 1 This is one of the perspective views of this utility model.

[0017] Figure 2 This is the second perspective view of this utility model.

[0018] Figure 3 This is one of the cross-sectional views of the spray unit of this utility model.

[0019] Figure 4 This is the second cross-sectional view of the spray unit of this utility model.

[0020] Figure 5 This is a perspective view of the spray unit of this utility model.

[0021] Figure 6 This is a perspective view of the drying unit of this utility model.

[0022] Explanation of icon numbers: 1-Rectangular frame, 2-Spray unit, 20-Spray box, 21-Spray mechanism, 210-Pressure pump, 211-Connecting pipe, 212-Main pipe, 213-Branch pipe, 214-Nozzle, 215-Pipe support, 22-Rotating drum, 220-Spiral guide plate, 221-Washing drum, 2210-Screen structure, 222-Rotating connecting cylinder, 223-Annular gear, 23-Drive mechanism, 230-Drive motor, 231-Output shaft 232-Output gear set, 233-Bearing housing, 3-Drying unit, 30-Moving bracket, 31-Transfer mechanism, 310-Motor encoder plate, 311-Stepper motor, 312-Driving wheel, 313-Main drive roller, 314-Secondary drive roller, 315-Tension belt, 316-Driven wheel, 317-Transmission belt, 32-Heat conduction mechanism, 320-Heating unit, 321-Air supply unit, 322-Temperature sensor, 33-Residual liquid tank. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings: like Figure 1-6As shown, this utility model relates to a pre-heat treatment cleaning device for hardware parts, including a rectangular frame 1. A spray unit 2 is mounted on the rectangular frame 1 for cleaning the workpiece. A drying unit 3 is located on one side of the spray unit 2 for drying the workpiece. The spray unit 2 includes a spray box 20 mounted on the rectangular frame 1, a spray mechanism 21 mounted on the inner wall of the spray box 20, a rotating drum 22 rotatably connected inside the spray box 20, and a drive mechanism 23 rotatably connected to the rotating drum 22. The spray mechanism 21 sprays cleaning fluid, the rotating drum 22 rotates the workpiece for rinsing, and the drive mechanism 23 drives the rotating drum 22 to rotate. A spiral guide plate 220 is provided on the inner wall of the rotating drum 22. The rotating drum 22 includes a cleaning drum 221 and a rotating connecting cylinder 222 fixedly connected to the cleaning drum 221. The cleaning drum 221 has a screen structure 2210 with a screen aperture smaller than that of the hardware. The minimum dimensions of the component include: annular teeth 223 on the outer wall of the rotating connecting cylinder 222, which mesh with the output end of the drive mechanism 23; the pitch of the spiral guide plate 220 is 0.8–1.2 times the inner diameter of the drum, and the plate has a rectangular cross-section; the bottom of the spray box 20 is provided with a drain port 200, which is connected to the circulation treatment device; each end of the spray box 20 is provided with a feeding component and a discharging component; the rectangular frame 1 includes a crossbeam, a column, and a support plate, with the crossbeam... A rectangular base is formed by full penetration welding with the column. An adjustment seat is set under the base to finely adjust the tilt of the rectangular frame 1. The crossbeam is a rectangular steel tube with a length, width and height of 100×50×5mm. The column is a square tube with a length, width and height of 80×80×6mm. The support plate is a 10mm thick steel plate with a φ14mm elongated hole for adjusting the equipment installation. A 5mm thick reinforcing angle plate is set at the connection of each component. The size of the angle plate matches the connecting parts. The local load-bearing capacity is enhanced by plug welding.

[0024] like Figure 4-5As shown, the drive mechanism 23 includes a drive motor 230, an output shaft 231, an output gear set 232, and a bearing housing 233. The output gear set includes a gearbox, a first output tooth disposed within the gearbox, and a second output tooth meshing with the first output tooth via a gear housing. The second output tooth includes a primary tooth, a secondary tooth disposed on one side of the primary tooth, and a gear shaft disposed in the center. The outer diameter of the primary tooth is larger than that of the secondary tooth. The output speed of the drive motor is adjusted by the tooth difference between the primary and secondary teeth in the second output tooth. Specifically, the primary tooth of the second output tooth in the output gear set 232 meshes with an annular tooth 223. The power source 30 is fixedly installed on the motor bracket on the top of the spray box 20. The output gear set 232 is mounted on the reinforcing angle plate on the spray box 20 by the gearbox. The output shaft 231 passes through the bearing seat 233 and is connected to the output gear set 232 through a flat key. When the drive motor 230 is powered on and started, the rotational power is transmitted to the output gear set 232 in sequence through the output shaft 231 and the input shaft. When the gear rotates, it drives the ring tooth 223 that meshes with it to rotate. Since the ring tooth 223 is rigidly connected to the rotating connecting cylinder 222, the rotating connecting cylinder 222 then rotates around its own axis, thereby driving the cleaning drum 221 that is bolted to it to rotate synchronously.

[0025] like Figure 1-5As shown, the spraying mechanism 21 includes a pressurizing pump 210, a main pipe 212 connected to the outlet of the pressurizing pump 210 via a connecting pipe 211, a circumferential branch pipe 213 connected to the main pipe 212, and nozzles 214 arranged at a 30° spiral angle; the nozzles 214 are fan-shaped wide-angle nozzles with a spray angle of 61° to 66°; the pressurizing pump 210 draws cleaning fluid from the storage device and pressurizes and delivers it to the main pipe 212 via the connecting pipe 211. The main pipe 212 is arranged in a ring along the axis of the rotating drum 22 on the inner wall of the spray box 20 to ensure that the cleaning fluid delivery path coincides with the center line of the drum, thereby achieving uniform distribution of the cleaning fluid along the length of the drum; the main pipe 21... 2. Multiple circumferential branch pipes 213 are connected in a ring. The circumferential branch pipes 213 connected to the main pipe are distributed around the outer wall of the drum in a ring array. Each branch pipe 213 is equipped with multiple sets of fan-shaped wide-angle nozzles 214 at intervals. The nozzles 214 are arranged at a 30° helical angle relative to the drum axis. The helical arrangement makes the spray trajectory of the nozzles 214 form a spiral cleaning band covering the entire circumference of the drum. The spray pipe is fixed by a pipe support 215 that is bolted to the spray box. There are generally two sets of pipe supports 215, which include a circular double-layer clamping plate and a fixing seat that can be bolted to the inner wall of the spray box. At the same time, the spray angle of the fan-shaped nozzles 214 is set. The angle is 61° to 66°. This angle range ensures that the spray fan covers the contact area between the inner wall of the drum and the workpiece, preventing excessive dispersion of the cleaning fluid and reduced impact force due to an excessively large angle. When the drive mechanism 23 drives the rotating drum 22 to rotate at a speed of 5-15 r / min, the hardware inside the drum moves axially under the push of the spiral guide plate 220. At the same time, the spraying mechanism 21 maintains a working pressure of 0.2-0.4 MPa through the pressurization pump 210, and sprays the cleaning fluid at a flow rate of 12-18 L / min·m² through the nozzle 214 at high speed. The cleaning fluid penetrates the screen structure 2210 and directly impacts the surface of the rotating workpiece, utilizing mechanical impact. The dual action of brushing and chemical dissolution removes oil and impurities; the sprayed cleaning fluid, carrying dirt, flows through the pores of the screen structure 2210 into the bottom of the spray box 20, and enters the circulation treatment device through the drain outlet 200 for processing; the distance between the nozzle 214 and the drum is set in the range of 150-200mm, which, together with the spray angle and the drum speed, ensures that each workpiece is covered by the nozzle 214 during the rolling process, achieving cleaning without dead angles. When the drum rotates, the speed at which the guide plate 220 pushes the workpiece axially is synchronized with the covering speed of the spiral cleaning belt of the nozzle 214, avoiding the workpiece from being left in a certain area, resulting in over-washing or unwashing, thus improving cleaning efficiency and cleaning quality.

[0026] like Figure 1-2As shown in Figure 6, the drying unit 3 includes a movable support 30, a transfer mechanism 31 mounted on the movable support 30, a heat conduction mechanism 32 mounted on the transfer mechanism 31, and a residual liquid tank 33 located below the transfer mechanism 31. The transfer mechanism 31 is used to transfer the workpiece, the heat conduction mechanism 32 is used to conduct hot air to the workpiece for drying, and the residual liquid tank 33 is used to collect residual liquid dripping from the workpiece. The movable support 30 is moved and docked with the rectangular frame 1 via rollers at its bottom, so that the drying unit 3 matches the discharge end position of the spray unit 2, ensuring a smooth transition of the workpiece from the outlet of the rotating drum 22 of the spray box 20 to the transfer mechanism 31 of the drying unit 3. Mechanism 31 includes a stepper motor 311 mounted on the movable support 30 via a motor encoder 310, a drive wheel 312 located at the output end of the stepper motor 311, a main drive roller 313 located at one end of the movable support 30, a secondary drive roller 314 located at the other end of the movable support 30, a tension belt 315 located between the main drive roller 313 and the secondary drive roller 314, a driven wheel 316 located at one end of the main drive roller 313, and a drive belt 317 connecting the drive wheel 312 and the driven wheel 316. The tension belt 315 has through holes to facilitate the dripping of residual cleaning fluid. The heat conduction mechanism 32 includes a heating element 320 and... Temperature sensors 322 are installed on the air supply unit 321 and the heating unit 320. The transfer mechanism 31 drives the drive wheel 312 to rotate via a stepper motor 311. The drive wheel 312 drives the driven wheel 316 and the main drive roller 313 to rotate synchronously via a transmission belt 317. The main drive roller 313 and the auxiliary drive roller 314 form an elastic transmission surface through a tension belt 315. When the cleaned workpiece is discharged from the rotating drum 22 onto the surface of the tension belt 315, the tension belt 315, driven by the roller, conveys the workpiece towards the heat transfer mechanism 32 at a speed of 0.1-0.3 m / s. During the conveying process, the workpiece drips liquid due to the gravity of its residual cleaning fluid. The residual liquid falls directly into the residual liquid tank 33 below the transfer mechanism 31. The residual liquid tank 33 is connected to the circulation treatment device through a drain valve at the bottom to achieve centralized recovery of residual liquid. The heat conduction mechanism 32 is located above the transfer mechanism 31. The heating element 320 heats the air to 40-60°C through an electric heating element. The air supply element 321 guides the hot air to the surface of the workpiece through the air duct by a centrifugal fan. At the same time, the temperature sensor 322 monitors the temperature of the hot air in real time and feeds it back to the temperature control system. When the workpiece is conveyed on the tension belt 315, the hot air blows vertically across the surface of the workpiece at a wind speed of 1.5-2.5 m / s, using the principle of convection heat transfer to accelerate the evaporation of moisture and complete the drying process.

[0027] Working principle: When the drive motor 230 is energized, the power is transmitted sequentially through the output shaft 231 and the output gear set 232 to the ring gear 223, driving the cleaning drum 221, which is bolted to the rotating connecting cylinder 222, to rotate around the axis. The spiral guide plate 220 on the inner wall of the drum pushes the workpiece to move axially. At the same time, the pressure pump 210 draws cleaning fluid from the storage device and delivers it through the connecting pipe 211 to the main pipe 212 arranged along the axis of the drum. The cleaning fluid is sprayed through the circumferential branch pipe 213 connected to the main pipe 212 and the fan-shaped wide-angle nozzle 214 connected to the branch pipe 213. Under the pressure of 0.2-0.4MPa, the cleaning fluid penetrates the screen structure 2210 at a flow rate of 12-18L / min·m² and impacts the surface of the rolling workpiece. The oil stains are removed by mechanical scouring and chemical dissolution. The cleaning fluid carrying the dirt flows through the pores of the screen structure 2210 into the bottom drain port 200 of the spray box 20. After being filtered and degreased in the circulation treatment device, the cleaned workpiece is recycled. The cleaned workpiece is discharged from the drum outlet to the transfer mechanism 31 of the drying unit 3. The driving wheel 312 is driven by the stepper motor 311. The driving wheel 312 drives the driven wheel 316 to rotate via the transmission belt 317. The driven wheel 316 drives the main drive roller 313 to rotate. The tension belt 315 between the main drive roller 313 and the auxiliary drive roller 314 conveys the workpiece at a speed of 0.1-0.3 m / s. The heating part 320 of the heat conduction mechanism 32 heats the air to 40-60℃ through the electric heating element. The centrifugal fan blows the hot air vertically onto the surface of the workpiece at a wind speed of 1.5-2.5 m / s after the air is evenly distributed through the air duct. Convection heat transfer is used to accelerate the evaporation of moisture. The temperature sensor 322 provides real-time feedback to the temperature control system. The workpiece slides to the next process at the end of the conveyor, completing the process of cleaning-drying-residual liquid recovery.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model. Therefore, without departing from the design spirit of the present utility model, any equivalent changes or modifications made by those skilled in the art to the structure, features and principles of the present utility model should fall within the protection scope of the patent application of the present utility model.

Claims

1. A device for cleaning hardware before heat treatment, comprising a rectangular frame, characterized in that: The rectangular frame is equipped with a spray unit for cleaning workpieces. A drying unit is located on one side of the spray unit for drying the workpieces. The spray unit includes a spray box on the rectangular frame, a spray mechanism on the inner wall of the spray box, a rotating drum rotatably connected inside the spray box, and a drive mechanism rotatably connected to the rotating drum. The spray mechanism sprays cleaning fluid, the rotating drum rotates the workpiece to receive rinsing, and the drive mechanism drives the rotating drum to rotate. The inner wall of the rotating drum is provided with a spiral guide plate. The rotating drum includes a cleaning drum and a rotating connecting cylinder fixedly connected to the cleaning drum. The cleaning drum has a screen structure with a screen aperture smaller than the minimum size of the hardware. The outer wall of the rotating connecting cylinder is provided with annular teeth that mesh with the output end of the drive mechanism.

2. The hardware pre-heat treatment cleaning apparatus according to claim 1, wherein: The pitch of the spiral guide plate is 0.8–1.2 times the inner diameter of the drum, and the cross-section of the plate is rectangular.

3. The hardware pre-heat treatment cleaning apparatus according to claim 1, wherein: The drive mechanism includes a drive motor, an output shaft, an output gear set, and a bearing housing. The output gear set includes a gearbox, a first output tooth disposed in the gearbox, and a second output tooth meshing with the first output tooth through a gear housing. The second output tooth includes a primary tooth, a secondary tooth disposed on one side of the primary tooth, and a gear shaft disposed in the center. The outer diameter of the primary tooth is larger than that of the secondary tooth. The output speed of the drive motor is adjusted by the tooth difference between the primary tooth and the secondary tooth in the second output tooth.

4. The pre-heat treatment cleaning device for hardware parts according to claim 1, characterized in that: The spraying mechanism includes a pressure pump, a main pipe connected to the outlet of the pressure pump via a connecting pipe, a circumferential branch pipe connected to the main pipe, a pipe support bolted to the spray box, and nozzles arranged at a 30° helical angle. The main pipe is arranged in a ring along the axis of the rotating drum.

5. The hardware pre-cleaning apparatus of claim 4, wherein: The nozzle is a fan-shaped wide-angle nozzle with a spray angle of 61° to 66°.

6. The hardware pre-heat treatment cleaning apparatus of claim 1, wherein: The spray box is equipped with a drain outlet at the bottom.

7. The hardware pre-heat treatment cleaning apparatus according to claim 1, wherein: The drying unit includes a movable support, a transfer mechanism mounted on the movable support, a heat conduction mechanism mounted on the transfer mechanism, and a residual liquid tank located below the transfer mechanism. The transfer mechanism is used to transfer the workpiece, the heat conduction mechanism is used to conduct hot air to the workpiece for drying, and the residual liquid tank is used to collect residual liquid dripping from the workpiece.

8. The hardware pre-cleaning apparatus of claim 7, wherein: The transfer mechanism includes a stepper motor mounted on the movable support via a motor encoder, a drive wheel located at the output end of the stepper motor, a main drive roller located at one end of the movable support, a secondary drive roller located at the other end of the movable support, a tension belt located between the main drive roller and the secondary drive roller, a driven wheel located at one end of the main drive roller, and a drive belt connecting the drive wheel and the driven wheel.

9. The hardware pre-cleaning apparatus of claim 7, wherein: The heat conduction mechanism includes a heating element and an air supply element.

10. The hardware pre-heat treatment cleaning apparatus according to claim 9, wherein: A temperature sensor is provided on the heating element.

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