Molding sand screening device
The molding sand screening device, with its multi-stage screen and automated cover plate design, solves the problem of manual cleaning of impurities in molding sand screening, achieving efficient automatic screening and impurity removal, and improving screening efficiency and quality.
Patent Information
- Application Number
- CN202520089247.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-15
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-01-15
AI Technical Summary
In mechanical casting, the sand screening process requires manual cleaning of impurities, which is time-consuming and labor-intensive, and can easily cause screen blockage, affecting screening efficiency.
Design a molding sand screening device that uses a multi-stage screen structure and drive components to lift and rotate the cover plate, thereby achieving automatic screening and impurity removal and avoiding clogging.
It achieves fully automated screening of molding sand, improving screening efficiency and quality, saving time and labor, and eliminating the need for manual cleaning of impurities.
Smart Images
Figure CN223684384U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the molding sand screening technical field, specifically to a molding sand screening device. BACKGROUND
[0002] Molding sand is the original sand for manufacturing sand mould and sand core in foundry production, mainly composed of quartz particles with uniform particle size, which can be classified into clay sand, water glass sand, cement sand, resin sand and the like according to the binder, among which clay sand, water glass sand and resin sand are used most frequently. According to the use, it can be classified into face sand, filling sand and single sand. Among them, the face sand is a layer of molding sand close to the casting, and the quality requirement is high; the filling sand is behind the face sand layer and does not contact with the metal liquid, and the quality requirement is not strict; the single sand is not divided into face sand and back sand, and is mainly used for machine molding. In addition, the sand mould of large castings often needs to be dried before pouring, and the molding sand used is called dry mould sand; the sand mould of small and medium-sized castings is often used for pouring, and the molding sand used is called wet mould sand.
[0003] In the field of mechanical casting, molding sand is often used for molding and casting. In order to reduce production cost, the molding sand needs to be reused, but the molding sand after casting contains various useless impurities, so it needs to be screened. In the screening process, the impurities filtered out often need to be cleaned by manual labor, which is time-consuming and labor-intensive.
[0004] To solve the above problems, a molding sand screening device is proposed to solve the above problems. CONTENT OF THE UTILITY MODEL
[0005] To solve the problems in the background art, the utility model provides a molding sand screening device.
[0006] To achieve the above purpose, the utility model adopts the technical scheme that:
[0007] A molding sand screening device, comprising a screening cylinder, wherein a vibrating table is arranged at the bottom middle part of the screening cylinder; a first screen and a second screen are arranged at the inner upper end of the screening cylinder, one end of the inner side of each of the first screen and the second screen is provided with a discharge port, and a cover plate is movably arranged at the inner middle part of the discharge port;
[0008] A rotating shaft is arranged at the upper middle part of the screening cylinder, the rotating shaft is movably arranged at the inner upper end of the screening cylinder, the rotating shaft penetrates through the first screen and the second screen, and the cover plate is fixedly arranged on the outer wall of the rotating shaft; a driving assembly is arranged at the top of the rotating shaft, and the driving assembly is used for driving the rotating shaft to move up and down and rotate.
[0009] Preferably, the driving assembly comprises a driving motor, the output end of the driving motor is fixedly connected with the top of the rotating shaft, and the driving motor is arranged at the top of the screening cylinder.
[0010] Preferably, the bottom of the driving motor is connected with a plurality of groups of air cylinders, the plurality of groups of air cylinders are uniformly distributed in a circumferential direction, the air cylinders are fixedly installed at the top of the screening cylinder, and the air cylinders are used to drive the driving motor to move up and down.
[0011] Preferably, the inner bottom of the screening cylinder is provided with a discharge hopper, and the discharge hopper is located at the bottom of the second screen.
[0012] Preferably, the bottom of the discharge port is provided with a flow guide groove, the bottom of the discharge hopper is obliquely installed with a discharge groove, and the discharge groove is located at the left end of the flow guide groove.
[0013] Preferably, the top left side of the screening cylinder is provided with a feeding hopper, and the feeding hopper is located at the middle of the left end of the driving motor.
[0014] Preferably, the first screen and the second screen are installed in a vertical direction.
[0015] Compared with the prior art, the present application has the following beneficial effects:
[0016] In the scheme, by installing multiple screens in the screening cylinder, the sand can be screened in multiple stages, improving the efficiency and quality of sand screening; at the same time, by providing a discharge port and a cover plate in the discharge port, during use, the driving assembly can drive the cover plate to move up and down and rotate, thereby scraping the particles and impurities filtered by screening, so that the particles and impurities can be scraped into the discharge port for discharge, avoiding the situation that the particles and impurities still remain on the screen to cause blockage. Through the above structure, the sand can be automatically screened and discharged, and manual cleaning of impurities is not required, thereby effectively saving time and effort and improving the efficiency of screening work. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is a three-dimensional structure schematic diagram of the present application;
[0018] Figure 2 It is a side sectional view of the present application;
[0019] Figure 3 It is a structure schematic diagram of the screen and the cover plate in the present application.
[0020] In the figure: 1, vibration table; 2, screening cylinder; 3, feeding hopper; 4, first screen; 5, second screen; 6, discharge port; 7, rotating shaft; 8, cover plate; 9, driving motor; 10, air cylinder; 11, flow guide groove; 12, discharge hopper; 13, discharge groove. DETAILED DESCRIPTION
[0021] The technical scheme in the embodiment of the present application is to solve the problems in the above background art, and the general idea is as follows:
[0022] Embodiment: Refer to Figure 1 - Figure 3 As shown in the figure, the sand screening device of the embodiment comprises a screening cylinder 2, and a vibrating table 1 is arranged at the middle of the bottom end of the screening cylinder 2; a first screen 4 and a second screen 5 are arranged at the upper end of the inner side of the screening cylinder 2, and a discharge port 6 is arranged at the inner side of one end of the first screen 4 and the second screen 5; and a cover plate 8 is movably arranged at the inner side of the middle of the discharge port 6.
[0023] A rotating shaft 7 is arranged at the middle of the upper end of the screening cylinder 2, and the rotating shaft 7 is movably arranged at the upper end of the inner side of the screening cylinder 2 and penetrates through the first screen 4 and the second screen 5; and the cover plate 8 is fixedly arranged on the outer wall of the rotating shaft 7; a driving assembly is arranged at the top of the rotating shaft 7, and the driving assembly is used to drive the rotating shaft 7 to move up and down and rotate; the driving assembly comprises a driving motor 9, the output end of the driving motor 9 is fixedly connected with the top of the rotating shaft 7, and the driving motor 9 is arranged at the top of the screening cylinder 2; a plurality of air cylinders 10 are connected with the bottom of the driving motor 9, the plurality of air cylinders 10 are uniformly distributed in the circumferential direction, and the air cylinders 10 are fixedly arranged at the top of the screening cylinder 2.
[0024] The air cylinder 10 is used to drive the driving motor 9 to move up and down, so as to drive the rotating shaft 7 to move up and down; when the rotating shaft 7 rises, the cover plate 8 can be driven to rise, so that the cover plate 8 is separated from the discharge port 6; then the rotating shaft 7 is driven to rotate, so that the cover plate 8 is driven to move in rotation, so that the granular impurities remaining on the screen are pushed, so that the granular impurities are pushed into the discharge port 6 for discharge, and after the impurities are cleaned, the cover plate 8 is reset by the driving motor 9, and is moved to the upper side of the discharge port 6; then the rotating shaft 7 is driven to descend by the air cylinder 10, so that the cover plate 8 can be reinserted into the discharge port 6 for capping and plugging, so as to provide convenience for the vibrating screening of the sand.
[0025] In some examples, a discharge hopper 12 is arranged at the bottom of the inner side of the screening cylinder 2, and the discharge hopper 12 is arranged at the bottom of the second screen 5.
[0026] In some examples, a flow guide groove 11 is arranged at the bottom of the discharge port 6, which is mainly used for discharging the granular impurities; an outlet groove 13 is obliquely arranged at the bottom of the discharge hopper 12, and the outlet groove 13 is arranged at the left end of the flow guide groove 11, which is used for discharging the sand after screening.
[0027] In some examples, a feeding hopper 3 is arranged at the left side of the top of the screening cylinder 2, and the feeding hopper 3 is arranged at the middle of the left end of the driving motor 9.
[0028] In some examples, the first screen 4 and the second screen 5 are installed in a vertical direction, and a plurality of screens can be added according to requirements to realize step-by-step screening, and the mesh of the screen gradually decreases from top to bottom, so that the sand is screened by multiple screens, and the efficiency and quality of the sand screening are improved.
[0029] The working principle of the utility model is:
[0030] In use, first, the vibration table 1 at the bottom is started to drive the screening cylinder 2 to vibrate, then the sand is evenly put into the screening cylinder 2 from the feeding hopper 3, when the sand falls onto the first screen 4, the sand is first screened by the first vibration, the fine sand falls from the mesh of the first screen 4 to the second screen 5 for the second vibration, and some large particles of impurities are separated on the first screen 4, and the sand is continuously screened by the second screen 5, and the sand falls downward through multiple screens until it falls into the discharge hopper 12, and finally, the sand is discharged through the discharge chute 13.
[0031] In addition, when the sand completes the vibration, the multiple cylinders 10 are started to push the driving motor 9 upward to drive the rotating shaft 7 to rise, so that the cover plate 8 is separated from the discharge port 6, then the driving motor 9 is started to drive the rotating shaft 7 to rotate, so that the multiple cover plates 8 rotate on the first screen 4 and the second screen 5 respectively, so that the particles of impurities remaining on the screen are scraped to push the particles of impurities into the discharge port 6 for discharge, and the particles of impurities remaining on the screen are avoided to cause the blockage.
[0032] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. It should be understood by those skilled in the art that the utility model is not limited to the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.
Claims
1. A molding sand screening device, characterized in that, Includes a screening cylinder (2), and a vibrating table (1) is provided at the bottom center of the screening cylinder (2). The upper inner side of the screening cylinder (2) is provided with a first screen (4) and a second screen (5). The inner side of the first screen (4) and the second screen (5) are both provided with a discharge port (6). The inner side of the discharge port (6) is movably installed with a cover plate (8). A rotating shaft (7) is provided at the middle of the upper end of the screening cylinder (2). The rotating shaft (7) is movably installed on the upper inner side of the screening cylinder (2). The rotating shaft (7) passes through the first screen (4) and the second screen (5). The cover plate (8) is fixedly installed on the outer wall of the rotating shaft (7). A drive assembly is provided on the top of the rotating shaft (7), which is used to drive the rotating shaft (7) to perform lifting and rotating movements.
2. The molding sand screening device according to claim 1, characterized in that, The drive assembly includes a drive motor (9), the output end of which is fixedly connected to the top of the rotating shaft (7), and the drive motor (9) is located at the top of the screening cylinder (2).
3. The molding sand screening device according to claim 2, characterized in that, The bottom of the drive motor (9) is connected to multiple sets of cylinders (10), which are evenly distributed in the circumference. The cylinders (10) are fixedly installed on the top of the screening cylinder (2) and are used to drive the drive motor (9) to perform lifting and lowering movements.
4. The molding sand screening device according to claim 3, characterized in that, The bottom inner side of the screening cylinder (2) is provided with a discharge hopper (12), which is located at the bottom of the second screen (5).
5. The molding sand screening device according to claim 4, characterized in that, The bottom of the discharge port (6) is provided with a guide groove (11), and the bottom of the discharge hopper (12) is inclined to install a discharge trough (13), which is located at the left end of the guide groove (11).
6. The molding sand screening device according to claim 5, characterized in that, A feed hopper (3) is provided on the top left side of the screening cylinder (2), and the feed hopper (3) is located at the middle of the left end of the drive motor (9).
7. A molding sand screening device according to claim 6, characterized in that, The first screen (4) and the second screen (5) are installed in a vertical direction.