Screen plate of fine screen

Abstract

The utility model relates to the technical field of fine screens, in particular to a screen plate of a fine screen, which comprises an upper plate and a lower plate, central grooves are arranged in the upper plate and the lower plate, leakage-proof grooves surrounding the central grooves are arranged in the upper plate and the lower plate, screen holes positioned in the central grooves are arranged on the upper plate and the lower plate, and the upper plate and the lower plate are fixedly connected with the lower plate. And a locking mechanism for connecting the upper plate and the lower plate is arranged between the upper plate and the lower plate. The upper plate and the lower plate which are layered are arranged, so that a sieve plate structure of a double-layer structure is conveniently arranged, and two-time sieving is achieved; a locking mechanism is arranged between an upper plate and a lower plate, and a driving gear and a driven rack which are in meshed connection are arranged in a hollow sleeve plate, so that two locking clamping blocks are adjusted to move oppositely or reversely, and the upper plate and the lower plate are fixedly connected; the bearing support is arranged on the hollow sleeve plate, so that the bearing rotating shaft and the bearing flange are conveniently mounted, and the sieve plate is conveniently fixedly mounted and rotationally driven.

Description

Technical Field

[0001] The utility model relates to the technical field of fine screens, in particular to a fine screen plate. Background Art

[0002] Fine screen sieve plates have been widely used as graded screening equipment. The screen surface is an important component of the fine screen sieve plate, which is composed of screen wires and screen holes.

[0003] At present, the shapes of the sieve holes are generally strip, diamond, square, wavy, etc. Although the sieve surfaces with these sieve hole shapes can achieve the purpose of grading fine-grained materials, the sieve holes cannot make full use of the sieve surface area. Existing sieve plates, such as a fine sieve plate disclosed in announcement number CN207756488U, increase the number of openings of the fine sieve plate and improve the fine sieve screening efficiency under the conditions of the same screening particle size and sieve plate area. However, the use of a single-layer structure sieve plate means that the screening operation can only be carried out once, and the fixed installation of the sieve plate means that only static screening can be carried out, which can easily cause the material to be stuck in the sieve hole, which not only affects the screening efficiency and quality, but also makes it more likely to cause damage to the sieve plate structure. Utility Model Content

[0004] The utility model aims to solve the problem of limited screening effect of single-layer and fixed screen plates in the prior art and proposes a fine screen plate.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A fine screen sieve plate comprises an upper plate and a lower plate, wherein both the upper plate and the lower plate are provided with a central groove, and both the upper plate and the lower plate are provided with a leak-proof groove surrounding the central groove, wherein both the upper plate and the lower plate are provided with sieve holes located in the central groove, and a locking mechanism for connecting the upper plate and the lower plate is provided between the two plates.

[0007] Preferably, the upper plate and the lower plate are correspondingly distributed from top to bottom, and the central groove and the anti-leakage groove are concentrically arranged.

[0008] Preferably, the sieve holes are composed of four circumferentially equidistant sieve strips, and the sieve strips are composed of five radially distributed micropores.

[0009] Preferably, the locking mechanism includes limiting openings symmetrically formed in the upper plate and the lower plate, and locking through-holes communicating with the limiting openings and used for threadedly installing locking screws are formed in the side walls of the upper plate and the lower plate. The locking mechanism further includes a hollow sleeve plate located between the upper plate and the lower plate. A bearing support shaft is rotatably installed in the hollow sleeve plate through a damping bearing. A driving gear is key-connected to the bearing support shaft. Two driven racks meshing with the driving gear are slidably sleeved in the hollow sleeve plate. Locking blocks corresponding to the limiting openings are fixedly installed on the driven racks.

[0010] An integral connection load-bearing bracket is arranged on the outer side of the hollow sleeve plate, and a load-bearing rotating shaft is rotatably installed on the load-bearing bracket. A load-bearing flange for fixed installation is integrally connected to the load-bearing rotating shaft.

[0011] Preferably, the two driven racks are symmetrically arranged on both sides of the bearing support shaft, and the locking blocks are fixedly connected to one ends of the driven racks extending out of the hollow sleeve plate.

[0012] Preferably, the load-bearing bracket is in a U-shaped structure.

[0013] Compared with the prior art, the present utility model has the following advantages:

[0014] 1. By arranging the layered upper plate and lower plate, and concentrically arranging the central groove and the anti-leakage groove in the upper plate and the lower plate, circumferentially equally spaced sieve holes are facilitated to be opened, so as to arrange a double-layer sieve plate structure, thereby realizing two-stage screening.

[0015] 2. By arranging a locking mechanism between the upper plate and the lower plate, and arranging a driving gear and a driven rack engaged with each other in the hollow sleeve plate, the two locking blocks are adjusted to move towards or away from each other, so as to fixedly connect the upper plate and the lower plate.

[0016] 2. By arranging a load-bearing bracket on the hollow sleeve plate, it is convenient to install the load-bearing rotating shaft and the load-bearing flange, and it is convenient to fixedly install and rotationally drive the sieve plate. By driving the upper plate and the lower plate to flip synchronously, dynamic screening is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of a fine sieve plate proposed by the present utility model;

[0018] Figure 2 is a bottom view of a fine sieve plate proposed by the present utility model;

[0019] Figure 3 is a cross-sectional view of a fine sieve plate proposed by the present utility model;

[0020] Figure 4This is an enlarged schematic diagram of part A of a fine screen sieve plate proposed in the present invention.

[0021] In the figure: 1. Upper plate; 2. Lower plate; 3. Center groove; 4. Leak-proof groove; 5. Sieve hole; 6. Limit opening; 7. Locking through hole; 8. Hollow sleeve; 9. Load-bearing shaft; 10. Driving gear; 11. Driven rack; 12. Locking block; 13. Load-bearing bracket; 14. Load-bearing shaft; 15. Load-bearing flange. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] Reference Figures 1-4 A fine screen plate comprises an upper plate 1 and a lower plate 2, both of which are provided with a central groove 3, and a leak-proof groove 4 surrounding the central groove 3 is provided in the upper plate 1 and the lower plate 1, and the caliber of the central groove 3 is smaller than that of the leak-proof groove 4 to ensure that the large volume of material retained in the upper plate 1 and the upper plate 2 will not fall due to left and right swinging, and the upper plate 1 and the lower plate 2 are provided with sieve holes 5 located in the central groove 3. It should be noted that by setting a double-layer structure of the upper plate 1 and the lower plate 2, two screening operations can be carried out.

[0024] A locking mechanism is provided between the upper plate 1 and the lower plate 2 for connecting the two. Figure 3 With attached Figure 4 :

[0025] On the one hand, the locking mechanism includes a limit opening 6 symmetrically opened in the upper plate 1 and the lower plate 2, and a locking through hole 7 communicating with the limit opening 6 and used for threaded installation of a locking screw is opened in the side walls of the upper plate 1 and the lower plate 2. The locking mechanism also includes a hollow sleeve 8 located between the upper plate 1 and the lower plate 2. The hollow sleeve 8 is rotatably installed with a load-bearing shaft 9 through a damping bearing. The load-bearing shaft 9 is keyed to a driving gear 10. The hollow sleeve 8 has two driven racks 11 meshed with the driving gear 10. The driven rack 11 is fixedly mounted with a locking block 12 corresponding to the limit opening 6. By driving the load-bearing shaft 9 to rotate, the meshing drive gear 10 and the driven rack 11 drive the two locking blocks 12 to move toward and in the opposite direction, so as to facilitate the fixed connection between the upper plate 1 and the lower plate 2.

[0026] On the other hand, a load-bearing bracket 13 is integrally connected to the outside of the hollow sleeve plate 8, and a load-bearing rotating shaft 14 is rotatably installed on the load-bearing bracket 13. A load-bearing flange 15 for fixed installation is integrally connected to the load-bearing rotating shaft 14. The upper plate 1 and the lower plate 2 are fixedly installed through the load-bearing flange 15, and then the upper plate 1 and the lower plate 2 are driven by the load-bearing rotating shaft 14 to perform synchronous reciprocating flips, so as to achieve dynamic sieving.

[0027] The upper plate 1 and the lower plate 2 are correspondingly distributed from top to bottom, and the central groove 3 and the anti-leakage groove 4 are concentrically arranged, so that the materials screened by the upper plate 1 directly fall into the lower plate 2, and further screening is achieved through the lower plate 2.

[0028] The sieve holes 5 are composed of four sieve hole strips circumferentially and equidistantly distributed. The sieve hole strips are composed of five micro-holes radially distributed. It should be noted that the aperture value of the micro-holes in the upper plate 1 is larger than the aperture value of the micro-holes in the lower plate 2 to achieve more refined sieving.

[0029] The two driven racks 11 are symmetrically arranged on both sides of the load-bearing rotating shaft 9, and the locking block 12 is fixedly connected to one end of the driven rack 11 extending out of the hollow sleeve plate 8. The two driven racks 11 are driven by a driving gear 10, so as to perform synchronous disassembly and assembly operations on the upper plate 1 and the lower plate 2.

[0030] The load-bearing bracket 13 is in a C-shaped structure. By driving the load-bearing rotating shaft 14 to rotate, the upper plate 1 and the lower plate 2 are driven to perform synchronous reciprocating flips, so as to achieve dynamic sieving.

[0031] It should be noted that the specific model specifications of the upper plate 1 and the lower plate 2 need to be selected according to the actual specifications of the device, etc. The specific selection calculation method adopts the existing technology in this field, so it will not be elaborated here.

[0032] The functional principle of the present utility model can be described through the following operation methods:

[0033] Place the hollow sleeve plate 8 between the upper plate 1 and the lower plate 2. By screwing the load-bearing rotating shaft 9, the driving gear 10 is driven to rotate, so as to drive the two driven racks 11 to move, and drive the two locking blocks 12 to move into the limit opening 6;

[0034] Tighten the locking screw in the locking through hole 7 to fix the locking block 12 in the upper plate 1 and the lower plate 2.

[0035] The load-bearing rotating shaft 14 is fixedly connected through the load-bearing flange 15. By driving the load-bearing rotating shaft 14 to reciprocate and flip, the upper plate 1 and the lower plate 2 perform synchronous deflection movements.

[0036] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fine screen plate, comprising an upper plate (1) and a lower plate (2), characterized in that: Both the upper plate (1) and the lower plate (2) are provided with a central groove (3), and the upper plate (1) and the lower plate (2) are provided with a leakage-proof groove (4) surrounding the central groove (3). The upper plate (1) and the lower plate (2) are provided with sieve holes (5) located in the central groove (3), and a locking mechanism for connecting the two is provided between the upper plate (1) and the lower plate (2).

2. A fine screen sieve plate according to claim 1, characterized in that: The upper plate (1) and the lower plate (2) are correspondingly distributed from top to bottom, and the central groove (3) and the leakage-proof groove (4) are concentrically arranged.

3. A fine screen sieve plate according to claim 1, characterized in that: The sieve holes (5) are composed of four sieve hole strips circumferentially and equally spaced. Each sieve hole strip is composed of five micro-holes radially distributed.

4. A fine screen sieve plate according to claim 1, characterized in that: The locking mechanism includes limit openings (6) symmetrically opened in the upper plate (1) and the lower plate (2). Locking through holes (7) communicating with the limit openings (6) and used for threadedly installing locking screws are opened in the side walls of the upper plate (1) and the lower plate (2). The locking mechanism further includes a hollow sleeve plate (8) located between the upper plate (1) and the lower plate (2). A bearing shaft (9) is rotatably installed in the hollow sleeve plate (8) through a damping bearing. A driving gear (10) is key-connected to the bearing shaft (9). Two driven racks (11) meshing with the driving gear (10) are slidably sleeved in the hollow sleeve plate (8). Locking blocks (12) corresponding to the limit openings (6) are fixedly installed on the driven racks (11). A bearing support (13) is integrally connected to the outside of the hollow sleeve plate (8). A load-bearing shaft (14) is rotatably installed on the bearing support (13). A load-bearing flange (15) for fixed installation is integrally connected to the load-bearing shaft (14).

5. A fine screen sieve plate according to claim 4, characterized in that: The two driven racks (11) are symmetrically arranged on both sides of the bearing shaft (9), and the locking blocks (12) are fixedly connected to one end of the driven racks (11) extending out of the hollow sleeve plate (8).

6. A fine screen sieve plate according to claim 4, characterized in that: The bearing support (13) is in a U-shaped structure.

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