A casting sand shaker

Abstract

The utility model discloses a casting sand vibration sieve belongs to vibration sieve technical field, this casting sand vibration sieve, including screening device and setting in the cleaning device of screening device inside, screening device includes a plurality of layers and presents the filter part of L shape structure, a plurality of filter parts are laminated and set up, and the filter part is used for screening and guiding to casting sand, and the bottom of filter part is equipped with drive part, and drive part is used for driving filter part vibration, and the cleaning device includes cleaning piece, and cleaning piece sets up in the inside of filter part, and one side of cleaning piece is equipped with control part, and control part is used for driving cleaning piece to clean the casting sand that stuck in filter part, the utility model discloses the casting sand on the filter screen surface is scraped upwards through cleaning piece, and when cleaning piece removes in the direction of moving away from hydraulic pressure rod, the bottom of cleaning piece will give filter screen an impact force, and the casting sand that stuck on filter screen is cleaned out, compared with common casting sand vibration sieve, can avoid filter screen stuck and reduce screening effect.

Description

Technical Field

[0001] This utility model relates to the field of vibrating screen technology, and in particular to a casting sand vibrating screen. Background Technology

[0002] A vibrating screen operates by utilizing the reciprocating rotary vibration generated by a vibrator. The upper rotating weight of the vibrator causes the screen surface to produce planar rotary vibration, while the lower rotating weight causes it to produce conical rotary vibration. The combined effect of these two forces results in a complex rotary vibration of the screen surface. Its vibration trajectory is a complex spatial curve. This curve projects as a circle on the horizontal plane and as an ellipse on the vertical plane. Adjusting the excitation force of the upper and lower rotating weights changes the amplitude. Adjusting the spatial phase angle of the upper and lower weights alters the shape of the screen surface's motion trajectory and thus the trajectory of the material on the screen surface.

[0003] However, in the process of using a common foundry sand vibrating screen, if too much foundry sand is poured into the vibrating screen at one time, it will cause the filter screen to become clogged, reducing the screening effect of the corresponding layer.

[0004] Therefore, there is an urgent need to provide a vibrating screen for foundry sand to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a casting sand vibrating screen.

[0006] To solve the above-mentioned technical problems, the present invention provides a vibrating screen for foundry sand, comprising a screening device and a cleaning device disposed inside the screening device. The screening device includes several layers of L-shaped filter sections, which are stacked together. The filter sections are used to screen and guide the foundry sand. A driving part is provided at the bottom of the filter section, which is used to drive the filter section to vibrate. The cleaning device includes a cleaning component disposed inside the filter section. A control part is provided on one side of the cleaning component, which is used to drive the cleaning component to clean the foundry sand stuck in the filter section.

[0007] Furthermore, the filtration section consists of a screening component and a guide component, which are fixedly connected.

[0008] Furthermore, the top of the screening component is fixedly connected to a feed inlet, and the bottom of the screening component is a filter screen structure.

[0009] Furthermore, the driving unit includes a vibration motor, which is fixedly connected to a screening component at the bottom position. Several fixing components are fixedly connected to both sides of the screening component at the bottom position. A support component is provided at the bottom of the fixing component, and a buffer spring is provided between the fixing component and the support component.

[0010] Furthermore, the control unit includes a hydraulic rod, which is fixedly mounted at the top of the screening component. One end of the piston rod of the hydraulic rod is fixedly connected to a synchronizing rod, which is hinged to the cleaning component.

[0011] Furthermore, the control unit also includes two mating blocks, which are fixedly disposed on the top of the cleaning component. A mating groove is provided on one side of the mating block, and a sliding groove is provided on the side wall of the screening component. An auxiliary component is provided on one side of the sliding groove. The auxiliary component and the sliding groove are slidably connected. When the cleaning component moves toward the hydraulic rod, the inclined surfaces of the mating block and the auxiliary component fit together. When the cleaning component moves away from the hydraulic rod, the inner wall of the mating groove fits together with the outer wall of the auxiliary component.

[0012] Furthermore, a positioning element is provided on one side of the auxiliary component, the positioning element is fixedly connected to the screening component, and a thrust spring is provided between the positioning element and the auxiliary component, the thrust spring being used to provide a thrust to the auxiliary component.

[0013] The beneficial effects of this utility model are as follows: This invention uses a cleaning component to scrape the casting sand on the surface of the filter screen upwards. When the cleaning component moves away from the hydraulic rod, the bottom end of the cleaning component will exert an impact force on the filter screen, causing the casting sand stuck on the filter screen to be cleaned out. Compared with common casting sand vibrating screens, this invention can avoid the filter screen getting stuck and reducing the screening effect. Attached Figure Description

[0014] Figure 1 This is one of the overall structural schematic diagrams of this utility model; Figure 2 This is the second schematic diagram of the overall structure of this utility model; Figure 3 This is a schematic diagram of the screening device of this utility model; Figure 4 This is a schematic diagram of the cleaning device of this utility model.

[0015] In the diagram: 1. Screening device; 12. Screening component; 13. Guide component; 14. Feed inlet; 15. Slide chute; 16. Vibrating motor; 17. Fixing component; 18. Buffer spring; 19. Support component; Cleaning device; 21. Hydraulic rod; 22. Synchronizing rod; 23. Cleaning component; 24. Mating block; 25. Mating groove; 26. Positioning component; 27. Thrust spring; 28. Auxiliary component. Detailed Implementation

[0016] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0017] Please see Figures 1-4 The purpose of this utility model is to address the issue that, during the use of common casting sand vibrating screens, if too much casting sand is poured into the screen at once, it can cause clogging of the filter screen and reduce the screening effect of the corresponding layer. Therefore, a casting sand vibrating screen is proposed, which includes a screening device 1 and a cleaning device 2 disposed inside the screening device 1. Specifically, the screening device 1 is used to screen and guide the casting sand, and the cleaning device 2 is used to clean the casting sand that causes clogging in the screening device 1.

[0018] The screening device 1 includes several layers of L-shaped filter sections, which are stacked together. The filter sections are used to screen and guide the foundry sand. Specifically, the filter section consists of a screening component 11 and a guide component 12. The screening component 11 and the guide component 12 are fixedly connected. The shape formed by the screening component 11 and the guide component 12 is L-shaped, and the end of the screening component 11 near the guide component 12 is inclined downward, so that the foundry sand can slide along the bottom end of the screening component 11 towards the guide component 12.

[0019] In addition, the top of the top screening component 11 is fixedly connected to the feed inlet 13, and the bottom of the screening component 11 is a filter screen structure. Specifically, the operator can pour the raw material of foundry sand into the top screening component 11 through the screening component 11, and then perform layer-by-layer screening. The mesh size of the filter screen in each layer gradually decreases from top to bottom, which can achieve the effect of graded screening. The filter screen of the bottom screening component 11 can be set according to the specific usage requirements. If the foundry sand requires screening of three particle sizes, the bottom screening component 11 will not be equipped with a filter screen; otherwise, a filter screen will be set.

[0020] In addition, when the foundry sand is on the filter screen of the screening component 11, a driving force is needed to make the screening device 1 vibrate, which can greatly improve the screening effect. Therefore, a driving part is provided at the bottom of the filter section. The driving part is used to drive the filter section to vibrate. Specifically, the driving part includes a vibration motor 15. The vibration motor 15 is fixedly connected to the screening component 11 at the bottom position. Several fixing parts 16 are fixedly connected to both sides of the screening component 11 at the bottom position. A support part 18 is provided at the bottom of the fixing part 16. A buffer spring 17 is provided between the fixing part 16 and the support part 18. The vibration motor 15 is used to drive the screening component 11 to vibrate, and the buffer spring 17 is used to buffer the vibration of the vibration motor 15 to prevent the support part 18 from collapsing under long-term vibration.

[0021] During the operation of this vibrating screen, if a large amount of foundry sand is poured in within a short period of time, raw material accumulation will occur. Therefore, the cleaning device 2 includes a cleaning component 23, which is located inside the filter section. A control unit is provided on one side of the cleaning component 23. The control unit is used to drive the cleaning component 23 to clean the foundry sand stuck in the filter section. Specifically, the control unit includes a hydraulic rod 21, which is fixedly located at the top of the screening component 11. One end of the piston rod of the hydraulic rod 21 is fixedly connected to a synchronizing rod 22. The synchronizing rod 22 and the cleaning component 23 are hinged. Specifically, the hydraulic rod 21 is used to drive the synchronizing rod 22 to perform reciprocating linear motion, and the synchronizing rod 22 is used to drive the cleaning component 23 to perform reciprocating motion. When the synchronizing rod 22 drives the cleaning component 23 to move in the direction of the hydraulic rod 21, the bottom end of the cleaning component 23 is in contact with the surface of the filter screen, scraping the foundry sand accumulated on the surface of the filter screen upwards along the filter screen to improve the screening effect. It should be noted that the number of control units is set according to the number of filters, and control units are set in the screening unit 11 where filters are installed.

[0022] The control unit also includes two mating blocks 24, which are fixedly mounted on the top of the cleaning component 23. A mating groove 25 is provided on one side of the mating block 24, and a sliding groove 14 is provided on the side wall of the screening component 11. An auxiliary component 28 is provided on one side of the sliding groove 14. The auxiliary component 28 and the sliding groove 14 are slidably connected. When the cleaning component 23 moves toward the hydraulic rod 21, the inclined surfaces of the mating block 24 and the auxiliary component 28 fit together. When the cleaning component 23 moves away from the hydraulic rod 21, the inner wall of the mating groove 25 fits together with the outer wall of the auxiliary component 28. Specifically, when the hydraulic rod 21 drives the cleaning component 23 to move toward the hydraulic rod 21, the bottom end of the cleaning component 23 fits together with the surface of the filter screen. Under the action of gravity, the cleaning component 23 scrapes the casting sand on the surface of the filter screen, which can effectively prevent the casting sand from accumulating on the surface of the filter screen and can lift the casting sand at a lower position to a higher position, allowing for repeated screening and improving the screening effect. In addition, the hydraulic rod 21 is set along the inclined direction of the screening component 11, and the auxiliary component 28 is set along the horizontal direction. When the hydraulic rod 21 drives the cleaning component 23 to move away from the hydraulic rod 21, the auxiliary component 28 and the mating groove 25 are in contact. With the cooperation of the auxiliary component 28 and the mating groove 25, the cleaning component 23 is in a horizontal state. At this time, the bottom end of the cleaning component 23 is no longer in contact with the surface of the filter screen. When the mating groove 25 and the auxiliary component 28 are no longer in contact, the bottom end of the cleaning component 23 falls to the surface of the filter screen due to gravity, causing the filter screen to vibrate. This can clean the casting sand stuck on the filter screen and prevent the filter screen from becoming clogged after a period of use.

[0023] However, in order to ensure that the auxiliary component 28 does not affect the movement of the mating groove 25 toward the hydraulic rod 21, a positioning component 26 is provided on one side of the auxiliary component 28. The positioning component 26 is fixedly connected to the screening component 11. A thrust spring 27 is provided between the positioning component 26 and the auxiliary component 28. The thrust spring 27 is used to provide a thrust to the auxiliary component 28. Specifically, when the cleaning component 23 moves away from the hydraulic rod 21, the spring force of the thrust spring 27 makes the auxiliary component 28 and the mating groove 25 fit tightly together. When the cleaning component 23 moves toward the hydraulic rod 21, the inclined surface of the mating block 24 and the auxiliary component 28 makes the auxiliary component 28 slide against the spring force of the thrust spring 27. At this time, the auxiliary component 28 will not affect the movement of the cleaning component 23.

[0024] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A vibrating screen for foundry sand, characterized in that: The device includes a screening device (1) and a cleaning device (2) disposed inside the screening device (1). The screening device (1) includes several layers of L-shaped filter sections, which are stacked together. The filter sections are used to screen and guide the casting sand. The bottom of the filter section is provided with a driving section, which is used to drive the filter section to vibrate. The cleaning device (2) includes a cleaning component (23), which is disposed inside the filter section. A control section is provided on one side of the cleaning component (23), which is used to drive the cleaning component (23) to clean the casting sand stuck in the filter section.

2. The foundry sand vibrating screen according to claim 1, characterized in that: The filtration section consists of a sieve (11) and a guide (12), which are fixedly connected.

3. The foundry sand vibrating screen according to claim 2, characterized in that: The top of the sieve (11) is fixedly connected to the feed inlet (13), and the bottom of the sieve (11) is a filter screen structure.

4. A vibrating screen for foundry sand according to claim 2, characterized in that: The drive unit includes a vibration motor (15), which is fixedly connected to a screening component (11) at the bottom position. Several fixing components (16) are fixedly connected to both sides of the screening component (11) at the bottom position. A support component (18) is provided at the bottom of the fixing component (16), and a buffer spring (17) is provided between the fixing component (16) and the support component (18).

5. A vibrating screen for foundry sand according to claim 2, characterized in that: The control unit includes a hydraulic rod (21), which is fixedly installed at the top of the screening component (11). One end of the piston rod of the hydraulic rod (21) is fixedly connected to a synchronizing rod (22), and the synchronizing rod (22) and the cleaning component (23) are hinged together.

6. A vibrating screen for foundry sand according to claim 5, characterized in that: The control unit also includes two mating blocks (24). The mating blocks (24) are fixedly set on the top of the cleaning component (23). A mating groove (25) is provided on one side of the mating blocks (24). A sliding groove (14) is provided on the side wall of the screening component (11). An auxiliary component (28) is provided on one side of the sliding groove (14). The auxiliary component (28) and the sliding groove (14) are slidably connected. When the cleaning component (23) moves towards the hydraulic rod (21), the inclined surfaces of the mating blocks (24) and the auxiliary component (28) fit together. When the cleaning component (23) moves away from the hydraulic rod (21), the inner wall of the mating groove (25) and the outer wall of the auxiliary component (28) fit together.

7. A vibrating screen for foundry sand according to claim 6, characterized in that: A positioning element (26) is provided on one side of the auxiliary component (28). The positioning element (26) and the screening element (11) are fixedly connected. A thrust spring (27) is provided between the positioning element (26) and the auxiliary component (28). The thrust spring (27) is used to provide a thrust to the auxiliary component (28).

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