Filtering device for investment casting
By linking the servo motor with the cylinder, the filter plate of the investment casting filter device is automatically cleaned, which solves the problem of low efficiency of manual cleaning in the existing technology and improves cleaning efficiency and equipment utilization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGTIAN BAOLI VALVE FOUNDRY CO LTD
- Filing Date
- 2025-05-29
- Publication Date
- 2026-05-19
AI Technical Summary
Existing investment casting filter devices require manual disassembly for cleaning filter plates, which is inefficient and wastes manpower.
The system uses a servo motor and cylinder to clamp, flip, and backwash the filter plates, and combines this with the movement of the diversion pipe to achieve automated cleaning.
It enables automated cleaning of filter plates, reduces manual intervention, improves cleaning efficiency, and shortens equipment downtime.
Smart Images

Figure CN224252210U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of filtration device technology, specifically to an investment casting filtration device. Background Technology
[0002] In the investment casting process, filtration devices are used in many key stages, mainly to remove inclusions and impurities from the molten metal.
[0003] After a period of use, existing filtration devices require the filter plates to be removed from the device when cleaning is needed, which is not only a waste of manpower but also has low cleaning efficiency. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a casting filter device.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a casting filter device, including a worktable, a slot on the worktable, a frame inside the slot, a filter plate on the frame, two inner slots symmetrically arranged on the inner wall of the slot, a clamping plate slidably arranged inside the inner slot, the clamping plate being able to clamp and fix the two sides of the frame inside the slot, and two first pushing components symmetrically arranged on the two sides of the worktable, the output end of the first pushing component having a first push rod penetrating the worktable and connected to the clamping plate;
[0006] A motor is provided on the other side of the workbench, and the output end of the motor is provided with a rotating shaft that passes through the workbench and is connected to the front end of the frame.
[0007] To facilitate cleaning of the filter plates, the present invention includes the following improvements: the upper end of the workbench is provided with a feed box located above the empty trough, the lower end of the workbench is provided with a bottom box located below the empty trough, the lower end of the bottom box is provided with a discharge pipe, the top of the feed box is provided with a second propulsion assembly and a diversion pipe, the diversion pipe is located inside the feed box, the second propulsion assembly is fixed to the outer wall of the feed box, the output end of the second propulsion assembly is provided with a second push rod connected to the diversion pipe, the lower end of the diversion pipe is provided with multiple liquid outlet holes, and the upper end is provided with a transfer pipe.
[0008] To facilitate the assembly of the feed box and the bottom box, the present invention is improved by fixing the feed box to the upper end of the worktable with screws, and fixing the bottom box to the lower end of the worktable with screws.
[0009] Furthermore, the improvements of this utility model include that the motor is a servo motor, and both the first propulsion component and the second propulsion component are cylinders.
[0010] Compared with the prior art, the present invention provides a casting filter device with the following advantages:
[0011] Automated cleaning design reduces manual intervention: Through the linkage of servo motor and cylinder, the filter plate clamping, flipping and backflushing cleaning are automated, eliminating the need for manual disassembly of the filter plate, simplifying the cleaning process and reducing labor intensity.
[0012] High-efficiency filter plate cleaning improves work efficiency: The frame can rotate the filter plate 180 degrees, and with the movement and backflushing of the diversion pipe, it can quickly clean the impurities on the surface of the filter plate, avoiding the time-consuming problem of traditional manual cleaning and shortening the equipment downtime. Attached Figure Description
[0013] Figure 1 This is a first-view perspective three-dimensional structural diagram of the present invention;
[0014] Figure 2 This is a second-view perspective three-dimensional structural diagram of the present invention;
[0015] Figure 3 This is a first-view perspective three-dimensional structural diagram of the hollow groove in this utility model;
[0016] Figure 4 This is a two-dimensional structural diagram of the hollow groove in this utility model from a second perspective;
[0017] In the diagram: 1. Workbench; 2. Empty trough; 3. Frame; 4. Filter plate; 5. Inner trough; 6. Clamping plate; 7. First propulsion assembly; 8. Motor; 9. Feed box; 10. Diverter pipe; 11. Transfer pipe; 12. Second propulsion assembly; 13. Bottom box; 14. Discharge pipe. Detailed Implementation
[0018] 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.
[0019] Please see Figures 1-4 This utility model discloses a casting filter device, including a workbench 1, a slot 2 on the workbench 1, a frame 3 inside the slot 2, a filter plate 4 on the frame 3, two inner slots 5 symmetrically arranged on the inner wall of the slot 2, a clamping plate 6 slidably arranged in the inner slot 5, the clamping plate 6 can clamp and fix the two sides of the frame 3 in the slot 2, and two first push components 7 symmetrically arranged on the two sides of the workbench 1, the output end of the first push component 7 having a first push rod that penetrates the workbench 1 and connects to the clamping plate 6;
[0020] A motor 8 is provided on the other side of the workbench 1, and the output end of the motor 8 is provided with a rotating shaft that passes through the workbench 1 and is connected to the front end of the frame 3.
[0021] The motor 8 is a servo motor, and both the first propulsion component 7 and the second propulsion component 12 are cylinders.
[0022] This investment casting filtration device achieves integrated operation of molten metal filtration and automatic cleaning of filter plates 4 through the coordinated design of mechanical transmission and fluid control. Its core workflow is as follows:
[0023] Molten metal filtration process:
[0024] The upper end of the workbench 1 is provided with a feed box 9 located above the empty trough 2, and the lower end of the workbench 1 is provided with a bottom box 13 located below the empty trough 2. The lower end of the bottom box 13 is provided with a discharge pipe 14.
[0025] When molten metal needs to be filtered, the material is injected into the feed box 9 and flows downward through the filter plate 4. The filter plate 4 is installed on the frame 3, which is fixed by the clamping plate 6 in the slot 2 of the workbench 1 to ensure stability during filtration. The molten metal passes through the pores of the filter plate 4 into the bottom box 13 and is finally discharged to the designated location through the discharge pipe 14, while inclusions and impurities remain on the surface of the filter plate 4.
[0026] Automatic cleaning mechanism for filter plate 4:
[0027] The top of the feed box 9 is provided with a second propulsion assembly 12 and a diversion pipe 10. The diversion pipe 10 is located inside the feed box 9. The second propulsion assembly 12 is fixed on the outer wall of the feed box 9. The output end of the second propulsion assembly 12 is provided with a second push rod connected to the diversion pipe 10. The lower end of the diversion pipe 10 is provided with multiple liquid outlet holes, and the upper end is provided with a transfer pipe 11.
[0028] When filter plate 4 needs cleaning: the first propulsion component 7 (cylinder) drives the clamping plate 6 to retract into the inner groove 5, releasing the clamp on the frame 3; then the servo motor drives the rotating shaft to rotate, causing the frame 3 carrying the filter plate 4 to rotate 180 degrees in the empty groove 2. At this time, the external water supply equipment is connected through the adapter pipe 11, and the second propulsion component 12 (cylinder) pushes the diversion pipe 10 to move laterally in the feed box 9, and the cleaning fluid flows through the outlet hole to backwash the filter plate 4. During the cleaning process, impurities fall into the bottom box 13 with the water flow and are discharged through the discharge pipe 14, achieving efficient cleaning of the filter plate 4.
[0029] 3. Fluid distribution and control:
[0030] The diversion pipe 10 inside the feed box 9 can move laterally under the drive of the second propulsion assembly 12, which can cover the entire area of the filter plate 4 during cleaning and ensure the uniformity of the backwash water flow.
[0031] The feed box 9 is fixed to the upper end of the workbench 1 with screws, and the bottom box 13 is fixed to the lower end of the workbench 1 with screws.
[0032] The feed box 9 and the bottom box 13 are fixed with screws, which makes disassembly and assembly convenient and facilitates internal maintenance and impurity cleaning. The structural design of the empty trough 2, frame 3 and clamping plate 6 ensures that the filter plate 4 is installed firmly and is easy to replace.
[0033] The adapter pipe 11 can be connected to external water supply equipment or molten metal materials to switch between filtration and cleaning functions; the combination of servo motor and cylinder drive ensures precise action and is suitable for various molten metal filtration scenarios.
[0034] In the description herein, it should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.
Claims
1. A casting filter device, comprising a worktable (1), characterized in that: The workbench (1) is provided with a slot (2), a frame (3) is provided in the slot (2), a filter plate (4) is provided on the frame (3), two inner slots (5) are symmetrically arranged on the inner wall of the slot (2), a clamping plate (6) is slidably arranged in the inner slot (5), and the clamping plate (6) can clamp and fix the two sides of the frame (3) in the slot (2). Two first push components (7) are symmetrically arranged on the two sides of the workbench (1), and the output end of the first push component (7) is provided with a first push rod that penetrates the workbench (1) and connects to the clamping plate (6). A motor (8) is provided on the other side of the workbench (1), and the output end of the motor (8) is provided with a rotating shaft that passes through the workbench (1) and connects to the front end of the frame (3).
2. The investment casting filter device according to claim 1, characterized in that: The upper end of the workbench (1) is provided with a feed box (9) located above the empty trough (2), and the lower end of the workbench (1) is provided with a bottom box (13) located below the empty trough (2). The lower end of the bottom box (13) is provided with a discharge pipe (14).
3. The investment casting filter device according to claim 2, characterized in that: The top of the feed box (9) is provided with a second propulsion assembly (12) and a diversion pipe (10). The diversion pipe (10) is located inside the feed box (9). The second propulsion assembly (12) is fixed on the outer wall of the feed box (9). The output end of the second propulsion assembly (12) is provided with a second push rod connected to the diversion pipe (10). The lower end of the diversion pipe (10) is provided with multiple liquid outlet holes, and the upper end is provided with a transfer pipe (11).
4. The investment casting filter device according to claim 3, characterized in that: The feed box (9) is fixed to the upper end of the workbench (1) by screws, and the bottom box (13) is fixed to the lower end of the workbench (1) by screws.
5. The investment casting filter device according to claim 4, characterized in that: The motor (8) is a servo motor.
6. The investment casting filter device according to claim 5, characterized in that: Both the first propulsion assembly (7) and the second propulsion assembly (12) are cylinders.