Powder swinging screen with adjustable screening area

Abstract

The utility model discloses a powder swinging screen with an adjustable screening area, and belongs to the technical field of swinging screens. A powder rocking sieve with an adjustable sieving area comprises a multi-layer sieve frame, the multi-layer sieve frame comprises a first-stage sieve tray, a second-stage sieve tray and a third-stage sieve tray, and the first-stage sieve tray, the second-stage sieve tray and the third-stage sieve tray are connected through flanges. In order to solve the problems that when a mesh screen structure in a swinging screen is used for screening separated materials, the efficiency of powder passing through the mesh screen cannot be adjusted, mesh screen apertures of different layers are different, the passing rate of a bottom-layer screen is lower than that of an upper-layer structure, and once a large amount of separated materials are input, dust is accumulated and raised. The passing rate of powder screening can be increased by staggering the screen holes in the surfaces of the two screen cloth discs, the adjusting blades in the middle layer are controlled to rotate, the screen holes in the surfaces of any screen cloth disc can be covered, the screening passing rate of the double-shaft screen cloth is decreased, and therefore powder can be prevented from being accumulated in the screening area of the lower layer after passing through the double-shaft screen cloth.

Description

Technical Field

[0001] The utility model relates to the technical field of swing sieves, in particular to a powder swing sieve with an adjustable screening area. Background Technique

[0002] Swing sieves can be divided into square swing sieves and circular swing sieves. The principle of imitating manual design of swing sieves is a special design of an efficient screening machine to meet the needs of high output and high-precision screening. The simplest screening is to look at both hands and screen with both eyes. The swing screening machine is a mechanical simulation of this, and it is currently the most effective to simulate the effective principle of manual screening movement. It is suitable for all powders and particulate materials in the fine and ultra-fine ranges, especially suitable for difficult-to-process materials.

[0003] The Chinese patent with the publication number CN212550455U discloses a circular swing sieve structure, including a bottom plate. This circular swing sieve structure achieves the purpose of good fixing effect, solves the problem of poor fixing effect of general circular swing sieve structures, improves the safety of the circular swing sieve body, enables the circular swing sieve body to be more stable during operation, thus greatly improving the screening performance of the swing sieve, and at the same time reducing unnecessary losses, so as to meet people's usage requirements.

[0004] In the above patent, when the screen structure inside the swing sieve screens the divided material, the efficiency of the powder passing through the screen cannot be adjusted. And the screen hole diameters of different layers of screens are different, and the passing rate of the bottom layer during screening is lower than that of the upper layer structure. Once a large amount of divided material is input, there will be a situation of accumulation and dust raising. Content of the Utility Model

[0005] The purpose of the utility model is to provide a powder swing sieve with an adjustable screening area. By staggering the screen holes on the surfaces of two screen trays, the passing rate of the powder during screening can be improved. Controlling the rotation of the adjusting blades in the middle layer can cover the screen holes on the surface of any screen tray to reduce the passing rate of the double-axis screen, so as to avoid the accumulation of powder in the lower screening area after passing through, and the problems in the prior art can be solved.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A powder swing sieve with an adjustable screening area, including a multi-layer screen frame. The multi-layer screen frame includes a first-stage screen tray, a second-stage screen tray, and a third-stage screen tray. The first-stage screen tray, the second-stage screen tray, and the third-stage screen tray are connected by flanges. An outlet is provided on one side of each of the first-stage screen tray, the second-stage screen tray, and the third-stage screen tray. A base is provided below the multi-layer screen frame. A dust-proof cover plate is provided on the top of the first-stage screen tray, and the dust-proof cover plate is welded to the first-stage screen tray. An inlet is provided on the top of the dust-proof cover plate.

[0007] Preferably, spring brackets are provided around the base. Transfer shaft blocks are provided at both ends of the spring brackets. A rubber seat is provided inside the base, and a vibration motor is provided inside the rubber seat.

[0008] Preferably, a tray is provided at the bottom of the three-stage sieve plate. The tray is connected to the base through a spring bracket. A counterweight is provided on the outer side above the vibration motor. The counterweight is connected to the tray by bolts.

[0009] Preferably, a material distribution cone plate is provided inside the three-stage sieve plate. The material distribution cone plate is connected to the three-stage sieve plate through a card slot. A power machine shaft is provided inside the material distribution cone plate. A double-axis sieve mesh is provided inside the second-stage sieve plate, and a vibrating sieve cone plate is provided inside the first-stage sieve plate.

[0010] Preferably, the double-axis sieve mesh includes an upper sieve plate, adjusting blades, and a lower sieve plate. The adjusting blades are located between the upper sieve plate and the lower sieve plate. Sieve holes are provided on the outer surfaces of the upper sieve plate and the lower sieve plate.

[0011] Preferably, the upper sieve plate is rotatably connected to the lower sieve plate, and the adjusting blades are rotatably connected to the upper sieve plate.

[0012] Compared with the prior art, the beneficial effects of the present utility model are:

[0013] In the present utility model, the upper sieve plate and the lower sieve plate can be rotated and expanded. By staggering the sieve holes on the surfaces of the two sieve plates, the passing rate of the powder screening can be improved. At this time, the screening efficiency of the double-axis sieve mesh is the highest. By controlling the rotation of the adjusting blades in the middle layer, the sieve holes on the surface of any sieve plate can be covered, reducing the passing rate of the double-axis sieve mesh, thus avoiding the powder from accumulating in the lower screening area after passing through. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the overall front view of the present utility model;

[0015] Figure 2 is the overall internal structure schematic diagram of the present utility model;

[0016] Figure 3 is the overall exploded structure schematic diagram of the present utility model;

[0017] Figure 4 is the structure schematic diagram of the double-axis sieve mesh of the present utility model.

[0018] In the figure: 1. Multi-layer sieve frame; 2. Base; 3. Vibration motor; 101. First-level sieve tray; 102. Second-level sieve tray; 103. Third-level sieve tray; 104. Discharge port; 105. Double-axis sieve mesh; 106. Shaking sieve cone tray; 107. Material distribution cone tray; 108. Power machine shaft; 1011. Feed port; 1012. Dust-proof cover plate; 1051. Upper sieve mesh plate; 1052. Adjusting blade; 1053. Lower sieve mesh plate; 1054. Sieve hole; 201. Spring support; 202. Rubber seat; 203. Tray; 2011. Adapter shaft block; 301. Counterweight block. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] In order to solve the problem that when the sieve mesh structure inside the swing sieve screens the material distribution, the efficiency of the powder passing through the sieve mesh cannot be adjusted, and the sieve hole diameters of different levels of sieve meshes are different, and the passing rate of the bottom layer is lower than that of the upper layer structure. Once a large amount of material distribution is input, there will be problems of accumulation and dust raising; please refer to Figures 1-4 , the present invention provides the following solutions:

[0021] A powder swing sieve with adjustable screening area, including a multi-layer sieve frame 1. The multi-layer sieve frame 1 includes a first-level sieve tray 101, a second-level sieve tray 102 and a third-level sieve tray 103. The first-level sieve tray 101, the second-level sieve tray 102 and the third-level sieve tray 103 are connected by flanges. Discharge ports 104 are provided on one side of the first-level sieve tray 101, the second-level sieve tray 102 and the third-level sieve tray 103. A base 2 is provided below the multi-layer sieve frame 1. A dust-proof cover plate 1012 is provided on the top of the first-level sieve tray 101. The dust-proof cover plate 1012 is welded to the first-level sieve tray 101. A feed port 1011 is provided on the top of the dust-proof cover plate 1012;

[0022] In this embodiment, the powder enters the first-level sieve tray 101 from the feed port 1011. After being screened by the shaking sieve cone tray 106, the unpassed powder is discharged from the discharge port 104 on one side, and the passed powder enters the double-axis sieve mesh 105 area in the second-level sieve tray 102. Finally, after being screened by the double-axis sieve mesh 105, it falls into the material distribution cone tray 107 inside the third-level sieve tray 103 and is then discharged through the discharge port 104 to obtain the final product;

[0023] Spring brackets 201 are provided around the base 2. Transfer shaft blocks 2011 are provided at both ends of the spring brackets 201. A rubber seat 202 is provided inside the base 2. A vibration motor 3 is provided inside the rubber seat 202. A tray 203 is provided at the bottom of the three-stage sieve plate 103. The tray 203 is connected to the base 2 through the spring brackets 201. A counterweight 301 is provided on the outer side above the vibration motor 3. The counterweight 301 is connected to the tray 203 by bolts. A material distribution cone plate 107 is provided inside the three-stage sieve plate 103. The material distribution cone plate 107 is connected to the three-stage sieve plate 103 through a card slot. A power machine shaft 108 is provided inside the material distribution cone plate 107. A double-axis sieve mesh 105 is provided inside the two-stage sieve plate 102. A vibrating sieve cone plate 106 is provided inside the one-stage sieve plate 101;

[0024] In this embodiment, the vibration motor 3 can drive the upper sieve plate structure to vibrate in a circular rotation manner, and the powder material rolls around inside the sieve plate, and the screening operation is completed during the process;

[0025] The double-axis sieve mesh 105 includes an upper sieve mesh plate 1051, adjusting blades 1052 and a lower sieve mesh plate 1053. The adjusting blades 1052 are located between the upper sieve mesh plate 1051 and the lower sieve mesh plate 1053. Sieve holes 1054 are provided on the outer surfaces of the upper sieve mesh plate 1051 and the lower sieve mesh plate 1053. The upper sieve mesh plate 1051 is rotatably connected to the lower sieve mesh plate 1053. The adjusting blades 1052 are rotatably connected to the upper sieve mesh plate 1051;

[0026] In this embodiment, the upper sieve mesh plate 1051 and the lower sieve mesh plate 1053 can be rotationally expanded. By staggering the sieve holes 1054 on the surfaces of the two sieve mesh plates, the passing rate of the powder material through the sieve can be increased. At this time, the screening efficiency of the double-axis sieve mesh 105 is the highest. By controlling the rotation of the adjusting blades 1052 in the middle layer, the sieve holes 1054 on the surface of any sieve mesh plate can be covered, making the passing rate of the double-axis sieve mesh 105 through the sieve smaller, so as to avoid the powder material from accumulating in the lower screening area after passing through.

[0027] Working principle: The powder material enters the first-stage sieve tray 101 from the feed inlet 1011. After being screened by the vibrating sieve cone tray 106, the unpassed material is discharged from the discharge port 104 on one side, while the passed powder material enters the double-axis sieve mesh 105 area in the second-stage sieve tray 102. The upper sieve mesh plate 1051 and the lower sieve mesh plate 1053 can be rotationally expanded. By staggering the sieve holes 1054 on the surfaces of the two sieve mesh plates, the passing rate of the powder material through the sieve can be increased. At this time, the sieving efficiency of the double-axis sieve mesh 105 is the highest. By controlling the rotation of the adjusting blades 1052 in the middle layer, the sieve holes 1054 on the surface of any sieve mesh plate can be covered to reduce the passing rate of the double-axis sieve mesh 105, so as to avoid the accumulation of the powder material in the lower-layer sieving area after passing through. Finally, after being screened by the double-axis sieve mesh 105, it falls into the material distribution cone tray 107 inside the third-stage sieve tray 103 and is then discharged through the discharge port 104 to obtain the final product.

[0028] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0029] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A powder swing screen with adjustable screening area, comprising a multi-layer screen frame (1), characterized in that: The multi-layer sieve frame (1) comprises a primary sieve plate (101), a secondary sieve plate (102) and a tertiary sieve plate (103); the primary sieve plate (101), the secondary sieve plate (102) and the tertiary sieve plate (103) are connected via flanges; one side of each of the primary sieve plate (101), the secondary sieve plate (102) and the tertiary sieve plate (103) is provided with a discharge port (104); a base (2) is provided below the multi-layer sieve frame (1); a dust cover plate (1012) is provided on the top of the primary sieve plate (101); the dust cover plate (1012) is welded to the primary sieve plate (101); and a feed port (1011) is provided on the top of the dust cover plate (1012).

2. The powder swing screen with adjustable screening area according to claim 1, characterized in that: The base (2) is provided with spring brackets (201) on all four sides, and transfer shaft blocks (2011) are provided at both ends of the spring bracket (201). A rubber seat (202) is provided inside the base (2), and a vibration motor (3) is provided inside the rubber seat (202).

3. The powder material swing screen with adjustable screening area according to claim 2, characterized in that: A tray (203) is provided at the bottom of the three-stage sieve plate (103), and the tray (203) is connected to the base (2) via a spring bracket (201). A counterweight (301) is provided on the outer side above the vibration motor (3), and the counterweight (301) is connected to the tray (203) via bolts.

4. The powder material swing screen with adjustable screening area according to claim 1, characterized in that: A material dividing cone disk (107) is arranged inside the third-stage sieve disk (103), and the material dividing cone disk (107) is connected to the third-stage sieve disk (103) through a slot, and a power supply shaft (108) is arranged inside the material dividing cone disk (107), a double-axis screen (105) is arranged inside the second-stage sieve disk (102), and a shaking sieve cone disk (106) is arranged inside the first-stage sieve disk (101).

5. The powder material swing screen with adjustable screening area according to claim 4, characterized in that: The biaxial screen (105) comprises an upper screen plate (1051), an adjusting blade (1052) and a lower screen plate (1053), wherein the adjusting blade (1052) is located between the upper screen plate (1051) and the lower screen plate (1053), and the outer surfaces of the upper screen plate (1051) and the lower screen plate (1053) are both provided with screen holes (1054).

6. The powder material swing screen with adjustable screening area according to claim 5, characterized in that: The upper screen plate (1051) is rotatably connected to the lower screen plate (1053), and the regulating blade (1052) is rotatably connected to the upper screen plate (1051).

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