Square swinging screen feeding pre-screening device

Abstract

The feeding and pre-screening device comprises a lower end connecting seat, the lower end connecting seat is of a conical structure, a material scattering part is arranged on the inner side of an opening in the lower end of the lower end connecting seat, a screening part is fixed to the upper surface of the lower end connecting seat, and an annular shell is fixed to the edge of the screening part. The annular shell, the screening piece and the lower end connecting base are evenly fixed through bolts, the upper end connecting cover is evenly fixed to the upper surface of the annular shell through bolts, oversize materials can be conveniently guided out through the obliquely-arranged pre-screening column, and the oversize materials can be guided out through the material guiding pipe; the conical material dispersing block can be fixed through the connecting short column, materials pre-screened through the screening piece can be evenly dispersed into the square swinging screen through the conical material dispersing block, and the feeding pre-screening device of the square swinging screen is simple in structure, convenient to install, capable of pre-screening raw materials entering the square swinging screen and high in practicability. And the screening efficiency of the square swinging screen is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of square swing screens, in particular to a square swing screen feeding pre-screening device. Background Art

[0002] The rocking screen uses a built-in screen body to screen particulate matter. The feed port of a traditional rocking screen is directly connected to the outlet of the feed pipe. The existing rocking screen feed port does not have a pre-screening function, which can easily affect the screening speed for larger particles of material, making it inconvenient to use. In addition, the material entering the rocking screen cannot be evenly dispersed inside, which further affects the screening speed. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a square rocking screen feed pre-screening device with a simple structure and easy installation. The raw materials entering the square rocking screen can be pre-screened, the screening efficiency of the square rocking screen can be improved, and the problems in the background technology can be effectively solved.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a square rocking screen feed pre-screening device, comprising a lower end connecting seat, the lower end connecting seat is a conical structure, a bulk material piece is arranged on the inner side of the lower end opening of the lower end connecting seat, a screening piece is fixed on the upper surface of the lower end connecting seat, an annular shell is fixed at the edge of the screening piece, the annular shell, the screening piece and the lower end connecting seat are evenly fixed by bolts, and an upper end connecting cover is evenly fixed on the upper surface of the annular shell by bolts.

[0005] Furthermore, the conical bulk block of the bulk material piece has connecting short columns evenly welded on the outer side of the lower end of the conical bulk block, and the connecting short column is fixed to the lower end connecting seat at one end away from the conical bulk block. The conical bulk block can be fixed by the connecting short column, and the material pre-screened by the screening piece can be evenly scattered into the square swing screen through the conical bulk block.

[0006] Furthermore, the screening element includes a circular connecting ring, a supporting ring is arranged on the upper surface of the circular connecting ring, the upper end of the supporting ring is inclined, and pre-screening columns are evenly arranged on the inner upper end of the supporting ring. A screening net is formed by the evenly arranged pre-screening columns, and the inclined pre-screening columns can facilitate the discharge of the screened material.

[0007] Furthermore, the annular shell includes a cylindrical shell, and the upper and lower ends of the cylindrical shell are provided with flange rings for connecting the upper end connecting cover and the annular shell. The lower end of the side of the cylindrical shell is provided with a material guide pipe, and the material guide pipe corresponds to the inclined lower end of the upper surface of the screening element. The material on the screen can be discharged through the material guide pipe.

[0008] Furthermore, the upper end connecting cover includes an annular cover, a connecting short tube is arranged on the upper surface of the annular cover, an anti-slip ring is arranged on the outer side of the upper end of the connecting short tube, and the connecting short tube can be connected to an external feed pipe through the connecting short tube to introduce the raw materials into the upper surface of the screening element.

[0009] Compared with the prior art, the utility model has the following beneficial effects: the lower end of the lower end connecting seat is fixedly connected to the feed port of the square rocking screen, and can be connected to an external feed pipe through a connecting short tube, so that the raw materials are introduced into the upper surface of the screening element, and the pre-screening column set obliquely can facilitate the discharge of the screened material, and the screened material can be discharged through the guide pipe, and the conical bulk material block can be fixed by connecting the short column, and the material pre-screened by the screening element can be evenly scattered into the interior of the square rocking screen through the conical bulk material block. The square rocking screen feeding pre-screening device has a simple structure and is easy to install. It can pre-screen the raw materials entering the square rocking screen, thereby improving the screening efficiency of the square rocking screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the utility model;

[0011] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0012] Figure 3 It is a schematic diagram of the explosion structure of the utility model.

[0013] In the figure: 1 upper end connecting cover, 11 connecting short tube, 12 annular cover, 2 annular shell, 21 cylindrical shell, 22 material guide pipe, 3 screening element, 31 pre-screening column, 32 supporting ring, 33 circular connecting ring, 4 lower end connecting seat, 5 bulk material element, 51 connecting short column, 52 conical bulk material block. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] See also Figure 1-3The utility model provides a technical solution: a square swing screen feeding pre-screening device, including a lower end connecting seat 4, the lower end connecting seat 4 is a conical structure, a bulk material piece 5 is arranged inside the lower end opening of the lower end connecting seat 4, a screening piece 3 is fixed on the upper surface of the lower end connecting seat 4, an annular shell 2 is fixed at the edge of the screening piece 3, the annular shell 2, the screening piece 3 and the lower end connecting seat 4 are uniformly fixed by bolts, an upper end connecting cover 1 is uniformly fixed on the upper surface of the annular shell 2 by bolts, and the bulk material piece 5 is arranged inside the lower end opening of the lower end connecting seat 4, a screening piece 3 is fixed on the upper surface of the lower end connecting seat 4, an annular shell 2 is fixed at the edge of the screening piece 3, annular shell 2, screening piece 3 and lower end connecting seat 4 are uniformly fixed by bolts, an upper end connecting cover 1 is uniformly fixed on the upper surface of the annular shell 2 by bolts, The conical bulk material block 52 of the material part 5 is uniformly welded with a connecting short column 51 on the outer side of the lower end of the conical bulk material block 52. The end of the connecting short column 51 away from the conical bulk material block 52 is fixed to the lower end connecting seat 4. The conical bulk material block 52 can be fixed by the connecting short column 51. The conical bulk material block 52 can make the material pre-screened by the screening element 3 uniformly scattered into the square swing screen. The screening element 3 includes a circular connecting ring 33. The upper surface of the circular connecting ring 33 is provided with a supporting ring 32. The supporting ring 32 is provided on the upper surface of the circular connecting ring 33. The upper end of the ring 32 is inclined, and the inner upper end of the supporting ring 32 is evenly provided with pre-screening columns 31, and the screening net is formed by the evenly arranged pre-screening columns 31. The inclined pre-screening columns 31 can facilitate the discharge of the screened material. The annular housing 2 includes a cylindrical housing 21, and the upper and lower ends of the cylindrical housing 21 are provided with flange rings for connecting the upper end connecting cover 1 and the annular housing 2. The lower end of the side of the cylindrical housing 21 is provided with a material guide pipe 22, and the material guide pipe 22 is connected to the inclined lower end of the upper surface of the screening element 3. Correspondingly, the material on the screen can be discharged through the material guide pipe 22. The upper end connecting cover 1 includes an annular cover 12. A connecting short tube 11 is arranged on the upper surface of the annular cover 12. An anti-slip ring is arranged on the outer side of the upper end of the connecting short tube 11. The connecting short tube 11 can be connected to an external feed pipe to introduce the raw material into the upper surface of the screening element 3. The square rocking screen feeding pre-screening device has a simple structure and is easy to install. It can pre-screen the raw materials entering the square rocking screen and improve the screening efficiency of the square rocking screen.

[0016] When in use: the lower end of the lower end connecting seat 4 is fixedly connected to the feed port of the square rocking screen, and can be connected to an external feed pipe through a connecting short tube 11, so as to introduce the raw materials into the upper surface of the screening element 3, and the inclined pre-screening column 31 can facilitate the discharge of the screened material, and the screened material can be discharged through the guide pipe 22, and the conical bulk material block 52 can be fixed by the connecting short column 51, and the conical bulk material block 52 can make the material pre-screened by the screening element 3 evenly dispersed into the inside of the square rocking screen.

[0017] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A square swing screen feed pre-screening device, comprising a lower end connecting seat (4), characterized in that: The lower end connecting seat (4) is a conical structure, a bulk material piece (5) is arranged inside the lower end opening of the lower end connecting seat (4), a screening piece (3) is fixed to the upper surface of the lower end connecting seat (4), an annular shell (2) is fixed at the edge of the screening piece (3), the annular shell (2), the screening piece (3) and the lower end connecting seat (4) are uniformly fixed by bolts, and an upper end connecting cover (1) is uniformly fixed to the upper surface of the annular shell (2) by bolts.

2. The square swing screen feed pre-screening device according to claim 1 is characterized in that: The conical bulk material block (52) of the bulk material piece (5) has connecting short columns (51) uniformly welded on the outer side of the lower end of the conical bulk material block (52), and the end of the connecting short column (51) away from the end connected to the conical bulk material block (52) is fixed to the lower end connecting seat (4).

3. The square swing screen feed pre-screening device according to claim 1 is characterized in that: The screening element (3) comprises a circular connecting ring (33), a supporting circular ring (32) being arranged on the upper surface of the circular connecting ring (33), the upper end of the supporting circular ring (32) being arranged at an angle, and pre-screening columns (31) being evenly arranged on the inner upper end of the supporting circular ring (32), so that a screening net is formed by the evenly arranged pre-screening columns (31).

4. The square swing screen feed pre-screening device according to claim 1 is characterized in that: The annular housing (2) comprises a cylindrical housing (21), the upper and lower ends of the cylindrical housing (21) being provided with flange rings for connecting the upper end connecting cover (1) and the annular housing (2), and the lower end of the side of the cylindrical housing (21) being provided with a material guide pipe (22), the material guide pipe (22) corresponding to the inclined lower end of the upper surface of the screening element (3).

5. The square swing screen feed pre-screening device according to claim 1, characterized in that: The upper end connection cover (1) comprises an annular cover (12), a connecting short tube (11) is arranged on the upper surface of the annular cover (12), and an anti-dropping ring is arranged on the outer side of the upper end of the connecting short tube (11).

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