Cleaning device and cleaning method for complex directional blade shell

Abstract

The invention discloses a cleaning device and a cleaning method for a complex directional blade shell. The cleaning device comprises a base, a supporting column, a driving mechanism, a chassis tray, a locking pin, an adjustable support, a pouring cup clamping support, a pouring cup clamping ring and a flexible plug disc. Moving wheels are arranged at the bottom of the base, the supporting columns are vertically fixed to the base, and the driving mechanism is connected with the chassis tray through a transmission shaft. And through the matching of the locking pin and the adjustable pouring cup clamping ring, the mold shells with different sizes can be reliably clamped. The cleaning method comprises the steps that after the shell is clamped and fixed, compressed air purging, filtered water flushing, program control swing cleaning after water filling, 180-degree rotation drainage and final flushing are sequentially carried out. Automation of the cleaning process is achieved, various foreign matter in a complex inner cavity of a shell can be effectively removed, the average inclusion proportion of directional blades is reduced, and the cleaning device has the outstanding advantages of being high in universality, good in cleaning effect, safe and convenient to operate and the like.

Description

Technical Field

[0001] This invention relates to the technical field of specialized equipment for cleaning the inner cavity of ceramic mold shells for directional blades in the field of precision casting, and specifically to a cleaning method for a cleaning device for complex directional blade mold shells. Background Technology

[0002] Directional blades are key components in aero-engines and gas turbines, typically formed through investment casting. The casting process for directional blades is lengthy and complex. Inclusions and porosity caused by foreign matter other than the master alloy are the main sources of defects, severely impacting casting yield and performance. The ceramic mold shell is an important intermediate product in the precision casting process and is one of the main factors introducing exogenous non-metallic inclusions. Furthermore, foreign matter within the cavity that directly contacts the molten metal is the direct cause of these inclusion defects.

[0003] Foreign matter inside the mold cavity mainly includes wax ash, carbon deposits, material lumps, and sand particles, which generally adhere to the inner cavity surface and accumulate in sharp corners and grooves. The directional mold cavity is a free-flowing structure open at both ends. Due to the irregular structures such as flank plates and blade crowns on the directional blades, and the fact that most contain ceramic cores, its internal structure is very complex. Conventional methods such as pouring and compressed air blowing are ineffective in removing these foreign objects, so water washing is necessary. Water can fill the complex internal cavity of the mold cavity, and through impact and turbulence, foreign objects are floated or suspended within it. Finally, the water is drained, thus removing the foreign objects from the mold cavity and achieving the purpose of cleaning the inner cavity. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a cleaning method for a cleaning device for complex directional blade shells; the specific technical solution is as follows: A cleaning device for complex directional blade shells includes wheels, a base, a support column, a drive mechanism, a transmission shaft, a pouring cup clamping bracket, a pouring cup retaining ring a, a pouring cup retaining ring b, an adjustable bracket, a chassis tray, a flexible plug, and a bottom frame. The bottom frame is equipped with casters for moving and positioning the device; the base is mounted on the bottom frame. The support column is vertically fixed to the base; The drive mechanism is located inside or on one side of the support column, and includes a motor and a drive shaft; the other side of the support column is connected to an adjustable bracket, and its height and position are fixed by a fixing pin b. The chassis tray is used to support the directional blade shell, and its size design is suitable for shells with different chassis diameters; The adjustable bracket is located on one side of the chassis tray to assist in supporting the bottom of the shell; locking pins a and b are symmetrically arranged on the edge of the chassis tray to fix the shell on the chassis tray. The pouring cup clamping bracket is sleeved on the adjustable bracket, and the pouring cup clamping bracket and the adjustable bracket cooperate with each other to adapt to shells of different heights. The pouring cup retaining ring a and pouring cup retaining ring b are symmetrically installed on the top of the pouring cup clamping bracket to clamp the shell pouring cup; The pouring cup clamping bracket is fixed in height and position by fixing pin a; The gate cup retaining ring a and gate cup retaining ring b are clamped and fixed in position by positioning pin a and positioning pin b, respectively. The flexible sealing plate is installed at the bottom opening of the chassis tray to close or open the bottom of the shell, enabling water injection and drainage operations.

[0005] The preferred embodiment of the cleaning device for complex directional blade shells is that the drive mechanism is connected to the control system, and the controller is configured to allow users to set the swing angle, swing speed and swing number, drive the shell to swing within the set angle range, and rotate the shell 180° to drain water after cleaning.

[0006] A cleaning method for a cleaning device used for complex directional blade-shaped shells includes the following steps: Step 1: Move the cleaning device to a workstation with compressed air, water inlet, and drainage facilities; Step 2: Place the shell mold on the chassis tray and lock the shell mold chassis using locking pins a and b; Step 3: Adjust the height of the pouring cup clamping bracket so that it is located in the middle of the pouring cup, and fix it with fixing pin a; Step 4: Adjust the gate cup retaining ring a and gate cup retaining ring b, clamp the gate cup, and fix it with locating pin a and locating pin b; Step 5: Open the flexible plug and use compressed air to blow the inner cavity of the shell from the sprue cup; Step 6: Rinse the inside of the shell using filtered water from the pouring cup; Step 7: Close the flexible plug and fill the shell with water; Step 8: Set the swing parameters of the drive mechanism, start the cleaning program, and make the shell swing at the set angle, speed and number of times; Step 9: After the oscillating cleaning is completed, the drive mechanism will rotate the shell 180º and hold for 2 s–8 s to drain the internal water; Step 10: Return the shell to its initial state, open the flexible plug, and rinse the pouring cup again with filtered water; the rinsing time is 2 s–6 s. Step 11: After the shell has dried, remove it and allow it to air dry or be dried by baking.

[0007] The preferred embodiment of the cleaning method for a cleaning device for complex directional blade shells is that the pressure of the compressed air is 0.2 MPa–0.5 MPa and the purging time is 3 s–10 s.

[0008] The preferred embodiment of the cleaning method for a cleaning device for complex directional blade shells is as follows: in steps six and ten, the flow rate of the filtered water is 5 L / min–10 L / min, the water temperature is 10℃–40℃, and the rinsing time is 2s–6s.

[0009] The preferred embodiment of the cleaning method for a cleaning device for complex directional blade shells is as follows: in step eight, the swing angle is within ±60º, the swing speed is 10º / s–45º / s, and the number of swings is 1–10 times. Beneficial effects

[0010] This invention features an automatic cleaning function, achieving automated control of actions such as swinging, rotating, and draining. Through the structural design of adjustable chassis trays, pouring cup clamping brackets, and retaining rings, the device can reliably clamp and fix directional blade shells with different chassis diameters, different heights, and complex internal cavity structures, achieving compatibility with shells of various sizes and structural types, and exhibiting good versatility.

[0011] Through a multi-step coordinated process of "compressed air purging—filtered water rinsing—full water oscillating cleaning—rotary drainage—final rinsing," foreign matter such as wax ash, carbon deposits, material lumps, and sand particles adhering to the complex inner surface of the shell and accumulating in sharp corners and grooves can be removed to the greatest extent. This process effectively reduces inclusion defects in directional blades caused by non-metallic foreign matter.

[0012] Operators only need to clamp and place the shell, which greatly reduces manual intervention, saves labor costs, significantly improves the safety of shell cleaning operations, and reduces operational risks. Attached Figure Description

[0013] Figure 1 This is a top view of a device for controlling the rotation of a blade rolling chuck.

[0014] In the diagram: 1-wheel, 2-base, 3-support column, 4-drive mechanism, 5-drive shaft, 6-sprue cup clamping bracket, 7-sprue cup retaining ring a, 8-sprue cup retaining ring b, 9-adjustable bracket, 10-locking pin a, 11-locking pin b, 12-chassis tray, 13-flexible stopper, 14-bottom frame, 15-fixing pin a, 16-fixing pin b, 17-positioning pin a, 18-positioning pin b. Detailed Implementation

[0015] The following is in conjunction with the appendix Figure 1The present invention will be described in detail, but the scope of protection of the present invention is not limited by the accompanying drawings.

[0016] A cleaning device for complex directional blade shells includes a wheel 1, a base 2, a support column 3, a drive mechanism 4, a transmission shaft 5, a pouring cup clamping bracket 6, a pouring cup retaining ring a7, a pouring cup retaining ring b8, an adjustable bracket 9, a chassis tray 12, a flexible plug 13, and a bottom frame 14. The bottom frame 14 is equipped with casters 1 for moving and positioning the device; the base 2 is mounted on the bottom frame 14. The support column 3 is vertically fixed to the base 2; The drive mechanism 4 is located inside or on one side of the support column 3, and includes a motor and a transmission shaft 5; the other side of the support column 3 is connected to the adjustable bracket 9, and the height and position are fixed by a fixing pin b16. The chassis tray 12 is used to support the directional blade shell, and its size design is suitable for shells with different chassis diameters; The adjustable bracket 9 is disposed on one side of the chassis tray 12 to assist in supporting the bottom of the shell; locking pins a10 and b11 are symmetrically disposed on the edge of the chassis tray 12 to fix the shell on the chassis tray 12. The pouring cup clamping bracket 6 is sleeved on the adjustable bracket 9. The pouring cup clamping bracket 6 and the adjustable bracket 9 cooperate with each other to adapt to shells of different heights. The pouring cup retaining ring a7 and pouring cup retaining ring b8 are symmetrically installed on the top of the pouring cup clamping bracket 6 for clamping the shell pouring cup; The pouring cup clamping bracket 6 is fixed in height and position by fixing pin a15; The gate cup retaining ring a7 and gate cup retaining ring b8 are clamped and fixed in position by positioning pin a17 and positioning pin b18, respectively. The flexible blocking plate 13 is located at the bottom opening of the chassis tray 12 and is used to close or open the bottom of the shell to realize water injection and drainage operations.

[0017] The drive mechanism 4 is connected to the control system, whose controller is configured to allow users to set the swing angle, swing speed and swing number, drive the shell to swing within the set angle range, and rotate the shell 180º to drain water after cleaning.

[0018] A cleaning method for a cleaning device used for complex directional blade-shaped shells includes the following steps: Step 1: Move the cleaning device to a workstation equipped with compressed air, water inlet, and drainage; the compressed air pressure is 0.3 MPa, and the purging time is 6 s; Step 2: Place the shell mold on the base tray 12 and lock the shell mold base 12 with locking pins a10 and b11; Step 3: Adjust the height of the pouring cup clamping bracket 6 so that it is located in the middle of the pouring cup, and fix it with the fixing pin a15; Step 4: Adjust the pouring cup retaining ring a7 and pouring cup retaining ring b8 to clamp the pouring cup and fix it with the locating pin a17 and locating pin b18; Step 5: Open the flexible plug 13 and use compressed air to blow the inner cavity of the shell from the pouring cup; Step 6: Rinse the inner cavity of the shell using filtered water from the pouring cup; the flow rate of the filtered water is 6 L / min, the water temperature is 20℃, and the rinsing time is 6 s each time; Step 7: Close the flexible plug 13 and fill the shell with water; Step 8: Set the swing parameters of the drive mechanism 4, start the cleaning program, and make the shell swing angle ≤ ±60º, the swing speed 30º / s, and the number of swings 5.

[0019] Step 9: After the oscillating cleaning is completed, the drive mechanism 4 rotates the shell 180º and holds it for 6 seconds to drain the internal water. Step 10: Return the shell to its initial state, open the flexible plug 13, and rinse the pouring cup again with filtered water; the flow rate of the filtered water is 60 L / min, the water temperature is 20℃, and the rinsing time is 6 s each time; Step 11: After the shell has dried, remove it and allow it to air dry or be dried by baking.

Claims

1. A cleaning device for complex directional blade-shaped shells, characterized in that, Includes wheels (1), base (2), support column (3), drive mechanism (4), transmission shaft (5), pouring cup clamping bracket (6), pouring cup retainer a (7), pouring cup retainer b (8), adjustable bracket (9), chassis tray (12), flexible plug (13), and bottom frame (14). The bottom frame (14) is provided with a movable wheel (1) for moving and positioning the device; the base (2) is set on the bottom frame (14); The support column (3) is vertically fixed to the base (2); The drive mechanism (4) is located inside or on one side of the support column (3), including a motor and a transmission shaft (5); the other side of the support column (3) is connected to the adjustable bracket (9), and the height and position are fixed by the fixing pin b (16); The chassis tray (12) is used to support the directional blade shell, and its size design is suitable for shells with different chassis diameters; The adjustable bracket (9) is located on one side of the chassis tray (12) to assist in supporting the bottom of the shell; locking pins a (10) and b (11) are symmetrically arranged on the edge of the chassis tray (12) to fix the shell on the chassis tray (12); The pouring cup clamping bracket (6) is sleeved on the adjustable bracket (9). The pouring cup clamping bracket (6) and the adjustable bracket (9) cooperate with each other to adapt to shells of different heights. The pouring cup retaining ring a (7) and pouring cup retaining ring b (8) are symmetrically installed on the top of the pouring cup clamping bracket (6) to clamp the shell pouring cup; The pouring cup clamping bracket (6) is fixed in height and position by fixing pin a (15); The gate cup retaining ring a (7) and gate cup retaining ring b (8) are clamped and fixed in position by positioning pin a (17) and positioning pin b (18); The flexible plug (13) is set at the bottom opening of the chassis tray (12) to close or open the bottom of the shell; to realize water injection and drainage operations.

2. The cleaning device for complex directional blade shells according to claim 1, characterized in that: The drive mechanism (4) is connected to the control system, whose controller is configured to allow users to set the swing angle, swing speed and swing number, drive the shell to swing within the set angle range, and rotate the shell 180° to drain water after cleaning.

3. The cleaning method for a cleaning device for complex directional blade shells according to any one of claims 1-2, characterized in that, Includes the following steps: Step 1: Move the cleaning device to a workstation with compressed air, water inlet, and drainage facilities; Step 2: Place the shell on the chassis tray (12) and lock the shell chassis (12) with locking pin a (10) and locking pin b (11). Step 3: Adjust the height of the pouring cup clamping bracket (6) so that it is located in the middle of the pouring cup and fix it with the fixing pin a (15); Step 4: Adjust the pouring cup retaining ring a (7) and pouring cup retaining ring b (8) to clamp the pouring cup and fix it with the locating pin a (17) and locating pin b (18); Step 5: Open the flexible plug (13) and use compressed air to blow the inner cavity of the shell from the pouring cup; Step 6: Rinse the inside of the shell using filtered water from the pouring cup; Step 7: Close the flexible plug (13) and fill the shell with water; Step 8: Set the swing parameters of the drive mechanism (4), start the cleaning program, and make the shell swing at the set angle, speed and number of times; Step 9: After the oscillating cleaning is completed, the drive mechanism (4) rotates the shell 180º and holds it for 2 s–8 s to drain the internal water; Step 10: Return the shell to its initial state, open the flexible plug (13), and rinse the pouring cup again with filtered water; Step 11: After the shell has dried, remove it and allow it to air dry or be dried by baking.

4. The cleaning method of the cleaning device for complex directional blade shells according to claim 3, characterized in that, The pressure of the compressed air is 0.2 MPa–0.5 MPa, and the purging time is 3 s–10 s.

5. The cleaning method for a cleaning device for complex directional blade shells according to claim 3, characterized in that: In steps six and ten, the flow rate of the filtered water is 5 L / min–10 L / min, the water temperature is 10℃–40℃, and the rinsing time is 2 s–6 s.

6. The cleaning method for a cleaning device for complex directional blade shells according to claim 3, characterized in that: In step eight, the swing angle is within ±60º, the swing speed is 10º / s–45º / s, and the number of swings is 1–10.

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