Drying treatment device for coating layer of centrifugal casting part
By designing a drying treatment device for centrifugal castings, the coating layer is circumferentially dried by spraying flames with the breathable holes of the fire and casing structure, the problems of low drying efficiency and unevenness in the prior art are solved, and a more efficient and uniform drying effect is achieved.
Patent Information
- Application Number
- CN202520828163.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-28
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2035-04-28
AI Technical Summary
In the existing centrifugal casting process, the efficiency of drying water-based coating layers is low and uneven, which affects the product processing quality.
A drying treatment device for the paint layer of centrifugal castings is designed, using a fire-spraying tube and casing structure. The breathable hole is located inside the casing. The fire-spraying tube rotates and slides left and right, and the breathable hole sprays flame to circumferentially dry the paint layer.
The uniform drying of the coating layer is achieved, the drying efficiency is improved, and the product quality is improved.
Smart Images
Figure CN222956812U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of centrifugally castings, and particularly relates to a drying treatment device for a coating layer of a centrifugally cast part. Background Technique
[0002] In the centrifugal casting process, it is necessary to spray a thicker coating layer on the inner wall of the centrifugal casting. The existing method for drying the water-based coating relies on the waste heat of the metal mold to unidirectionally dry the sprayed coating layer from the outer circle to the inner hole center direction, with low drying efficiency and uneven drying, which affects the processing quality of the product. Content of the Utility Model
[0003] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the utility model is to provide a drying treatment device for a coating layer of a centrifugally cast part, effectively solving the problems of uneven drying and low drying efficiency.
[0004] The technical solution for solving the technical problem is: including a centrifugal casting machine, a coating layer is sprayed on the inner wall of the centrifugal casting machine, a cover plate and a bottom plate are installed on the centrifugal casting machine, a pouring port is provided on the cover plate, a protective cover is fixed on the centrifugal casting machine, a through hole is provided in the middle of the protective cover, a frame is arranged on the left side of the centrifugal casting machine, a flame gun is slidably connected left and right on the frame, a flame spraying pipe is fixed on the flame gun, a plurality of air permeable holes are evenly arranged in a circle on the flame spraying pipe, the flame spraying pipe is externally threaded with a sleeve, the air permeable holes are located inside the sleeve, a connecting rod is fixed at the right end of the sleeve, and the other end of the connecting rod is fixed with a plug located on the right side of the flame spraying pipe.
[0005] Preferably, a lead screw is rotatably connected to the frame, a nut is threadedly connected to the lead screw, the upper end of the nut is fixedly connected to the flame gun, and guide rails are fixed on the frame on the front and rear sides of the lead screw, and the nut slides left and right along the guide rails.
[0006] Preferably, a motor is installed on the frame, and the motor is coaxially fixedly connected to the lead screw through a reducer.
[0007] Preferably, a gas pipe is connected to the left end of the flame gun, and a valve for controlling the gas is installed on the flame gun.
[0008] Preferably, an igniter is installed on the frame between the flame spraying pipe and the plug.
[0009] The utility model has the following advantages compared with traditional equipment: 1) During ignition, the ventilation holes are located inside the sleeve. Ignition is carried out at the right end of the flame spraying pipe, concentrating the flame at the flame spraying pipe, with a small ignition area, high safety, and reduced flame dispersion; 2) The flame spraying pipe enters the internal part of the centrifugal casting machine. The sleeve is rotated, and the plug blocks the flame spraying pipe. Multiple circumferential ventilation holes spray flames, enabling the circumferential drying of the coating layer. The drying is uniform. With a lead screw and nut structure, the flame spraying pipe is controlled to reciprocate left and right inside the centrifugal casting machine, and the ventilation holes dry back and forth left and right, with high working efficiency, uniform drying, and good product quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 is a schematic diagram of the front view of the utility model;
[0011] Figure 2 is a schematic diagram of the utility model in the ignition state of the flame spraying pipe;
[0012] Figure 3 is a schematic diagram of the utility model in the working state of the ventilation holes.
[0013] Reference numerals: 1, centrifugal casting machine; 2, coating layer; 3, cover plate; 4, bottom plate; 5, pouring port; 6, protective cover; 7, frame; 8, flame sprayer; 9, flame spraying pipe; 10, ventilation hole; 11, sleeve; 12, connecting rod; 13, plug; 14, lead screw; 15, nut; 16, motor; 17, gas pipe; 18, valve; 19, igniter. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0014] The following further details the specific embodiments of the utility model with reference to the accompanying drawings.
[0015] Provided by Figures 1 to 3 is a drying treatment device for a coating layer of a centrifugally cast part, including a centrifugal casting machine 1. The inner wall of the centrifugal casting machine 1 is sprayed with a coating layer 2. A cover plate 3 and a bottom plate 4 are installed on the centrifugal casting machine 1. A pouring port 5 is provided on the cover plate 3. A protective cover 6 is fixed on the centrifugal casting machine 1. A through hole is provided in the middle of the protective cover 6. A frame 7 is provided on the left side of the centrifugal casting machine 1. A flame sprayer 8 is slidably connected left and right on the frame 7. A flame spraying pipe 9 is fixed on the flame sprayer 8. A plurality of ventilation holes 10 are evenly arranged circumferentially on the flame spraying pipe 9. The flame spraying pipe 9 is externally threaded and connected to a sleeve 11. The ventilation holes 10 are located inside the sleeve 11. A connecting rod 12 is fixed at the right end of the sleeve 11, and the other end of the connecting rod 12 is fixed with a plug 13 located on the right side of the flame spraying pipe 9.
[0016] A lead screw 14 is rotatably connected to the frame 7. The lead screw 14 is threadedly connected to a nut 15. The upper end of the nut 15 is fixed to the flame sprayer 8. Guide rails are fixed on the frame 7 on the front and rear sides of the lead screw 14. The nut 15 slides left and right along the guide rails.
[0017] A motor 16 is installed on the frame 7, and the motor 16 is coaxially and fixedly connected to the lead screw 14 via a speed reducer.
[0018] The left end of the flame sprayer 8 is connected to a gas pipe 17, and a valve 18 for controlling the gas flow rate is installed on the flame sprayer 8.
[0019] An igniter 19 is installed on the frame 7 between the flame spray pipe 9 and the plug 13.
[0020] When in use of the present utility model, when the coating layer 2 of the centrifugal casting part needs to be dried, in the initial position, the ventilation holes 10 are located inside the sleeve 11, the flame spray pipe 9 is located on the left side of the through hole. Open the valve 18, and natural gas starts to flow into the flame sprayer 8. The natural gas is pressurized to the flame spray pipe 9. Open the igniter 19, and flames start to spray from the right side of the flame spray pipe 9. When igniting, first control the natural gas with a small flow rate to ensure the safety of ignition. Start the motor 16, the motor 16 drives the lead screw 14 to rotate, the lead screw 14 drives the nut 15 to slide to the right along the guide rail, and the nut 15 drives the flame sprayer 8 and the flame spray pipe 9 as a whole to slide to the right. When the flame spray pipe 9 passes through the through hole and the pouring port 5 and enters the centrifugal casting machine 1, turn off the motor 16, rotate the sleeve 11. Both the sleeve 11 and the flame spray pipe 9 are made of high-temperature resistant and heat-insulating materials. The sleeve 11 rotates leftward in a threaded manner on the flame spray pipe 9, and the sleeve 11 drives the plug 13 to rotate leftward in a spiral manner. The ventilation holes 10 on the flame spray pipe 9 are exposed, and the ventilation holes 10 start to spray flames. When the plug 13 blocks the right side of the flame spray pipe 9, a plurality of ventilation holes 10 are evenly arranged in a circle on the flame spray pipe 9, and the plurality of ventilation holes 10 spray flames towards the circumference at the same time, so as to be able to dry the coating layer 2 on the inner wall of the centrifugal casting machine 1 in a circular manner. At this time, start the motor 16, adjust the valve 18, gradually increase the flow rate of natural gas, and adjust the flame at the ventilation holes 10 so that the flame can cover the coating layer 2. The motor 16 drives the lead screw 14 to rotate, the lead screw 14 drives the nut 15, the flame sprayer 8, the flame spray pipe 9 and the ventilation holes 10 as a whole to move to the right. Then the flames sprayed by the ventilation holes 10 move to the right inside the centrifugal casting machine 1 to dry the coating layer 2 in an orderly manner. When the flame spray pipe 9 moves to the bottom plate 4, reverse the motor 16, and the flame spray pipe 9 moves to the left in an orderly manner to dry the coating layer 2 back and forth left and right, with uniform drying, improving the drying efficiency and ensuring the product quality. After drying, close the valve 18, and the flame sprayer 8 and the sleeve 11 return to their original positions.
[0021] This embodiment does not impose any formal restrictions on the shape, material, structure, etc. of the present utility model. Any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model all belong to the protection scope of the technical solution of the present utility model.
Claims
1. A drying treatment device for a coating layer of a centrifugal casting, comprising a centrifugal casting machine (1), the inner wall of the centrifugal casting machine (1) being sprayed with a coating layer (2), a cover plate (3) and a bottom plate (4) being mounted on the centrifugal casting machine (1), a pouring port (5) being provided on the cover plate (3), a protective cover (6) being fixed on the centrifugal casting machine (1), a through hole being provided in the middle of the protective cover (6), characterized in that: A frame (7) is provided on the left side of the centrifugal casting machine (1). A flamethrower (8) is slidably connected to the frame (7) in the left and right directions. A flamethrower tube (9) is fixed to the flamethrower (8). A plurality of air holes (10) are evenly arranged on the circumference of the flamethrower tube (9). The flamethrower tube (9) is externally threadedly connected to a sleeve (11). The air hole (10) is located inside the sleeve (11). A connecting rod (12) is fixed to the right end of the sleeve (11). A plug (13) located on the right side of the flamethrower tube (9) is fixed to the other end of the connecting rod (12).
2. The drying treatment device for the coating layer of a centrifugal casting according to claim 1, characterized in that: The frame (7) is rotatably connected to a lead screw (14), the lead screw (14) is threadedly connected to a nut (15), the upper end of the nut (15) is fixedly connected to the flamethrower (8), and guide rails located at the front and rear sides of the lead screw (14) are fixed to the frame (7), and the nut (15) slides in the left and right directions along the guide rails.
3. The drying treatment device for the coating layer of a centrifugal casting according to claim 2, characterized in that: A motor (16) is mounted on the frame (7), and the motor (16) is coaxially fixedly connected to the lead screw (14) via a reducer.
4. The drying treatment device for the coating layer of a centrifugal casting according to claim 1, characterized in that: The left end of the flamethrower (8) is connected to a gas pipe (17), and a valve (18) for controlling the gas flow is installed on the flamethrower (8).
5. The drying treatment device for the coating layer of a centrifugal casting according to claim 1, characterized in that: An igniter (19) located between the flame-spraying tube (9) and the plug (13) is mounted on the frame (7).