A vibrating sand screening machine with adjustable screen mesh aperture

Abstract

This utility model relates to a vibrating sand screening machine with adjustable screen aperture, comprising a screening shell with several feed inlets on its top surface. An upper screen and a lower screen are fixedly connected inside the screening shell, with the upper screen located above the lower screen. A conveying plate is fixedly connected below the feed inlets and to one side of the upper screen. A lower adjusting plate is provided on the top surface of the lower screen, and an upper adjusting plate is provided on the top surface of the upper screen. A primary screening and conveying cavity is formed between the upper screen, the conveying plate, and the top surface of the screening shell. A secondary screening cavity is formed between the upper and lower screens. A fine sand cavity is formed between the lower screen and the bottom surface of the screening shell. Separated discharge ports are provided at the ends of the primary, secondary, and fine sand cavities. The lower part of the screening shell is fixedly connected to a base via a vibration device. This utility model has a reasonable structure, and the size of the screen aperture can be adjusted by a small telescopic rod and adjusting plate to control the sand output quality.

Description

Technical Field

[0001] This utility model relates to the field of production equipment, and in particular to a vibrating sand screen with adjustable screen aperture. Background Technology

[0002] A sand screening machine is a mechanical device used for grading, removing impurities, and cleaning granular materials such as sand, gravel, ore, and coal. It is widely used in industries such as construction, mining, and casting. Sand screening machines can be divided into drum sand screening machines and vibrating sand screening machines according to their operating principles. Vibrating sand screening machines are usually composed of a screen, a vibrating motor, a dust removal device, and a shock absorption device. Its principle is to generate high-frequency vibration through a vibrating motor or an eccentric vibrator, which drives the screen to vibrate, thereby separating the sand and gravel. The screen aperture of existing vibrating sand screening machines is usually a fixed size, which makes it difficult to screen sand and gravel of different sizes according to actual needs, and has certain limitations. Utility Model Content

[0003] To overcome the shortcomings of the existing technology mentioned above, this utility model provides a vibrating sand screen with adjustable screen aperture.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: a vibrating sand screening machine with adjustable screen aperture, including a sand screening shell, a plurality of feed inlets on the top surface of the sand screening shell, an upper screen and a lower screen fixedly connected inside the sand screening shell, the upper screen being located above the lower screen, a conveying plate fixedly connected below the feed inlets and to one side of the upper screen, an adjusting perforated plate provided on the top surface of the lower screen, the adjusting perforated plate having plate holes corresponding one-to-one with the mesh holes on the surface of the lower screen, the overlapping holes between the mesh holes and the plate holes forming screen holes, the adjusting perforated plate and the lower screen being slidably connected by a slider and a slide rail, the adjusting perforated plate being driven by a small telescopic rod, in use, the small telescopic rod pulling the adjusting perforated plate, thereby adjusting the screen holes. The size of the screen is such that a primary screening conveying cavity is formed between the upper screen, the conveying plate, and the inner top surface of the sand screening shell; a secondary sand screening cavity is formed between the upper screen and the lower screen; and a fine sand cavity is formed between the lower screen and the inner bottom surface of the sand screening shell. The primary screening cavity, the secondary sand screening cavity, and the fine sand cavity are each provided with a mutually separated discharge port at their ends. The lower part of the sand screening shell is fixedly connected to the base via a vibration device. During operation, sand and gravel enter the conveying plate inside the sand screening shell through the feed, and then, under the action of the vibration device, the sand and gravel move towards the upper screen. The sand and gravel undergo preliminary screening at the upper screen, and the sand and gravel that has completed preliminary screening falls to the lower screen for secondary screening. Finally, the screened sand and gravel is discharged through the discharge port.

[0005] Preferably, the top surface of the upper screen is provided with an upper adjusting plate. The upper adjusting plate and the lower adjusting plate have roughly the same structure, except that the area of ​​the holes on the surface of the upper adjusting plate is larger than that on the surface of the lower adjusting plate.

[0006] Preferably, several sets of vibration damping devices are provided under the base. The vibration damping devices include two relatively inclined vibration damping springs to reduce the noise generated by vibration during operation.

[0007] Preferably, the plate hole is trapezoidal.

[0008] Preferably, the slider and slide rail are dovetail groove shaped to prevent the adjusting plate from detaching from the lower screen.

[0009] Preferably, a dust suction channel is provided above the discharge port, and the dust suction channel is fixedly connected to an external dust suction device, which sucks up the dust and impurities generated by the vibration of the internal sand and gravel.

[0010] The beneficial effect of this utility model is that the relative positions of the plate holes and the mesh holes on the surface of the lower and upper screens can be adjusted by using a small telescopic rod and an adjusting plate, thereby changing the size of the screen holes and controlling the quality of the sand output. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0012] Figure 1 This is the front view of this utility model;

[0013] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0014] Figure 3 This is a top view of the lower screen and lower adjusting plate of this utility model;

[0015] Figure 4 This is a top view of the lower screen of this utility model;

[0016] Figure 5 This is a top view of the lower adjusting orifice plate of this utility model;

[0017] Figure 6 yes Figure 3 Cross-sectional view along the BB direction;

[0018] In the diagram, 1. Sand screening shell; 2. Upper screen; 3. Lower screen; 4. Lower adjusting orifice plate; 5. Small telescopic rod; 6. Plate hole; 7. Screen hole; 8. Feed inlet; 9. Vibration device; 10. Base; 11. Conveying plate; 12. Primary screening cavity; 13. Secondary sand screening cavity; 14. Fine sand cavity; 15. Discharge port; 16. Vibration damping device; 17. Vibration damping spring; 18. Dust suction channel; 19. Upper adjusting orifice plate. Detailed Implementation

[0019] All features disclosed in this specification, or steps in all methods or processes disclosed herein, may be combined in any way, except for mutually exclusive features and / or steps.

[0020] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features for a similar purpose, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0021] like Figure 1-6 The vibrating sand screening machine with adjustable screen aperture shown includes a screening housing 1. Several feed inlets 8 are opened on the top surface of the screening housing 1. An upper screen 2 and a lower screen 3 are fixedly connected inside the screening housing 1. The upper screen 2 is located above the lower screen 3. A conveying plate 11 is fixedly connected below the feed inlets 8 and to one side of the upper screen 2. A lower adjusting plate 4 is provided on the top surface of the lower screen 3. The lower adjusting plate 4 has plate holes 6 that correspond one-to-one with the mesh holes on the surface of the lower screen 3. The overlapping holes between the mesh holes and the plate holes 6 form screen holes 7. The lower adjusting plate 4 and the lower screen 3 are slidably connected by a slider and a slide rail. The lower adjusting plate 4 is driven by a small telescopic rod 5. In use, the small telescopic rod 5 pulls the lower adjusting plate 4 to adjust the size of the screen holes 7. A primary screening cavity 12 is formed between the conveyor plate 11 and the inner top surface of the sand screening shell 1. A secondary screening cavity 13 is formed between the upper screen 2 and the lower screen 3. A fine sand cavity 14 is formed between the lower screen 3 and the inner bottom surface of the sand screening shell 1. The primary screening cavity 12, the secondary screening cavity 13, and the fine sand cavity 14 are provided with mutually separated discharge ports 15 at their ends. The lower part of the sand screening shell 1 is fixedly connected to the base 10 through a vibration device 9. During operation, the sand and gravel enter the conveyor plate 11 inside the sand screening shell 1 through the inlet 8. Then, under the action of the vibration device 9, the sand and gravel are driven to move towards the upper screen 2. The sand and gravel are initially screened at the upper screen 2. The sand and gravel that has completed the initial screening falls to the lower screen 3 for secondary screening. The screened sand and gravel is finally discharged through the discharge port 15.

[0022] The upper screen 2 has an upper adjusting plate 19 on its top surface. The upper adjusting plate 19 and the lower adjusting plate 4 have roughly the same structure, except that the area of ​​the plate holes 6 on the surface of the upper adjusting plate 19 is larger than that of the plate holes 6 on the surface of the lower adjusting plate 4.

[0023] Several sets of vibration damping devices 16 are provided below the base 10. Each vibration damping device 16 includes two relatively inclined vibration damping springs 17 to reduce the noise generated by vibration during operation.

[0024] The plate hole 6 is trapezoidal.

[0025] The slider and slide rail are dovetail groove shaped to prevent the adjusting plate 7 from dislodging from the lower screen 3.

[0026] A dust suction channel 18 is provided above the discharge port 15. The dust suction channel 18 is fixedly connected to an external dust suction device, which sucks up the dust and impurities generated by the vibration of the internal sand and gravel. Specific Implementation

[0027] The small telescopic rod 5 pulls the lower adjusting plate 4 to adjust the size of the screen hole 7. During operation, the sand and gravel enter the conveying plate 11 inside the sand screen housing 1 through the feed port 8. Then, under the action of the vibration device 9, the sand and gravel are driven to move upward towards the screen 2. The sand and gravel are initially screened at the upper screen 2. The sand and gravel that has completed the initial screening falls to the lower screen 3 for secondary screening. The sand and gravel that has completed screening is finally discharged through the discharge port 15.

[0028] This design is ingenious. By using a small telescopic rod and an adjusting plate, the relative positions of the holes on the plate and the mesh on the surface of the lower and upper screens can be adjusted, thereby changing the size of the screen holes and controlling the quality of the sand output. In addition, the dust and impurities inside the screen housing are removed by a dust collection device, which effectively improves the quality of the sand output.

[0029] This invention is not limited to the specific embodiments described above. This invention extends to any new feature or combination disclosed in this specification, as well as any new method or process step or combination disclosed herein.

Claims

1. A vibrating sand screen with adjustable screen aperture, characterized in that: The system includes a sand screening shell (1), with several inlets (8) on the top surface of the sand screening shell (1). An upper screen (2) and a lower screen (3) are fixedly connected inside the sand screening shell (1). The upper screen (2) is located above the lower screen (3). A conveying plate (11) is fixedly connected below the inlets (8) and on one side of the upper screen (2). A lower adjusting plate (4) is provided on the top surface of the lower screen (3). The lower adjusting plate (4) has plate holes (6) that correspond one-to-one with the mesh holes on the surface of the lower screen (3). The overlapping holes between the mesh holes and the plate holes (6) form screen holes (7). The lower adjusting plate (4) and the lower screen (3) are slidably connected by a slider and a slide rail. The lower adjusting plate (4) is driven by a small telescopic rod (5). The upper screen (2) has an opening on the top surface of the upper screen (2). There is an upper adjusting orifice plate (19), which has a structure that is largely the same as the lower adjusting orifice plate (4). The difference is that the area of ​​the plate hole (6) on the surface of the upper adjusting orifice plate (19) is larger than that of the plate hole (6) on the surface of the lower adjusting orifice plate (4). The upper screen (2), the conveying plate (11) and the inner top surface of the sand screening shell (1) form a primary screening cavity (12). The upper screen (2) and the lower screen (3) form a secondary sand screening cavity (13). The lower screen (3) and the inner bottom surface of the sand screening shell (1) form a fine sand cavity (14). The primary screening cavity (12), the secondary sand screening cavity (13) and the fine sand cavity (14) are provided with mutually separated discharge ports (15) at their ends. The lower part of the sand screening shell (1) is fixedly connected to the base (10) through a vibration device (9).

2. The vibrating sand screen with adjustable screen aperture according to claim 1, characterized in that: Several sets of vibration damping devices (16) are provided below the base (10), and the vibration damping devices (16) include two relatively inclined vibration damping springs (17).

3. The vibrating sand screen with adjustable screen aperture according to claim 1, characterized in that: The plate hole (6) is trapezoidal.

4. The vibrating sand screen with adjustable screen aperture according to claim 1, characterized in that: The slider and slide rail are dovetail groove shaped.

5. A vibrating sand screen with adjustable screen aperture according to claim 1, characterized in that: A dust suction channel (18) is provided above the discharge port (15), and the dust suction channel (18) is fixedly connected to an external dust suction device.

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