Three-dimensional screen drum of drum screen

Abstract

The utility model discloses a three-dimensional screen drum of a drum screen. The three-dimensional screen drum of the drum screen comprises a plurality of three-dimensional unit screen meshes and an annular screen frame. The circular ring screen frame is provided with a plurality of columns of fixing grooves which are distributed in a circumferential array mode, and each fixing groove is an arc surface groove with the upper end open and the lower bottom face provided with an arc hole; inner fixing screen plates of the three-dimensional unit screens are identical with fixing grooves in outline, circular tube screen holes are welded to the inner end walls of the circular tube screen holes, outer blocking parts are welded to the outer end walls of the circular tube screen holes, the inner fixing screen plates are placed in the fixing grooves, the peripheries of the inner fixing screen plates are attached to the annular wall of the lower groove in a flush mode, the middles of the inner fixing screen plates protrude out of shaft sleeve arc holes, and the inner ends of the inner fixing screen plates are flush with the outer walls of the arc holes. The threaded pieces penetrate through the first through holes and are in threaded connection with the peripheral fixing holes of the inner fixing net plate; and the radial height of the outer blocking part is smaller than that of the circular tube sieve pores. The utility model has the advantages that the screen drum structure is simplified, the cost is reduced, frequent replacement is not needed, and the blocking effect is good.

Description

Technical Field

[0001] The utility model relates to the field of material screening, in particular to a three-dimensional screen drum of a cylindrical screen. Background Art

[0002] At present, the treatment of urban decoration waste and domestic waste is becoming increasingly important. At present, the garbage is bagged and collected uniformly, and then the bagged garbage is processed and sorted mechanically. Among them, the drum screen is an important bag breaking and primary sorting equipment. Its bag breaking knife rotates to cut the garbage bag, and the rotating screen drum screens the fine materials. Its defects are: first, the screen drum has a complex structure. The screen drum usually uses a pressure plate to fix the thin-film structure 2D circular screen on the screen frame, and then an intercepting shell is provided at the outer end of the screen drum. The intercepting shell has a highly selective screening tube, resulting in a complex structure, complex installation, and high cost; second, its thin-film structure 2D circular screen is easily damaged and needs to be replaced frequently; third, the intercepting effect of the intercepting shell is not good, and film material enters the intercepting shell to form a blockage. Utility Model Content

[0003] In order to solve one or more of the above problems, the utility model provides a three-dimensional screen drum of a cylindrical screen.

[0004] According to one aspect of the present invention, the three-dimensional screen drum of the cylindrical screen comprises: a plurality of three-dimensional unit screens and a circular ring screen frame;

[0005] The annular screen frame is provided with multiple rows of fixed grooves, each row of several fixed grooves is arranged in a circular array, each fixed groove is an arc surface groove with an open upper end and an arc hole on the lower bottom surface, and a first through hole is provided on the lower groove ring wall of the arc hole;

[0006] The three-dimensional unit screen includes an inner fixed mesh plate, a circular tube sieve hole and an outer blocking part. The inner fixed mesh plate is an arc panel with the same outline as the fixed groove. Each mesh hole is slightly larger than the aperture of the circular tube sieve hole. The axis of the circular tube sieve hole is toward the central axis of the circular ring sieve frame. The inner end wall of the circular tube sieve hole is welded to the circular tube sieve hole and the outer end wall is welded to the outer blocking part. The inner fixed mesh plate is placed in the fixed groove. The inner fixed mesh plate is flush with the lower groove ring wall on all sides. The shaft sleeve circular arc hole protrudes in the middle and the inner end is flush with the outer wall of the circular arc hole. The screw member passes through the first through hole and is threadedly connected to the fixed holes around the inner fixed mesh plate.

[0007] The radial height of the outer blocking portion is smaller than the height of the circular tube sieve hole.

[0008] In some embodiments, rectangular positioning grooves are formed around the inner fixed mesh plate, the depth of the rectangular positioning grooves is equal to the thickness of the lower groove ring wall, and the rectangular positioning grooves are flush with the lower groove ring wall of the sleeve.

[0009] In some embodiments, a fixing hole with a threaded hole structure is provided on the ring wall of the lower groove, the threaded member passes through the first through hole and is threadedly connected to the threaded hole, and the threaded member is spot-welded and fixed at the connection between the first through hole and the threaded hole.

[0010] In some embodiments, the lower groove ring wall is provided with a fixing hole with a through hole structure, the threaded member passes through the first through hole and the fixing hole to be threadedly connected to the nut member, and the threaded member and the first through hole, the nut member and the fixing hole, and the threaded member and the nut member are spot welded and fixed at the connection points.

[0011] In some embodiments, elastic buffers are further provided between the plurality of circular tube sieve holes.

[0012] In some embodiments, the elastic buffer is a rubber that is integrally injection-molded and connected between the sieve holes of the circular tube.

[0013] In some embodiments, the circular screen frame is a circular bone ring formed by welding or threading a circular rib plate made of a T-shaped steel beam and a bent angle steel. Several circular bone rings are welded or threaded to form a three-dimensional structural support frame, and the vertical panel of the angle steel and the middle vertical plate of the T-shaped steel surround each other to form a fixed groove.

[0014] In some embodiments, a plurality of hook cutting knives are fixedly connected to the inner wall of the circular bone ring of the circular sieve frame.

[0015] In some embodiments, the outer tube diameter of each circular tube sieve hole is larger than the mesh diameter, and the material at the front end of the outer tube is removed to form a protruding circular ring end. The circular ring end sleeve is connected to the mesh and is welded to the inner hole wall of the mesh into one. The rear end wall of the circular ring end is fitted and connected to the outer surface of the internal fixed mesh plate.

[0016] In some embodiments, the outer blocking portion includes an outer fixing net and a blocking shell. The blocking shell is an arc-shaped bent part with an open inner end and a side opening. The vertical end plate of the blocking shell is fixedly connected or threadedly connected to the outer fixing net. The outer mesh holes of the outer fixing net are welded to the outer ends of the circular tube sieve holes.

[0017] Or the outer arc plate, outer fixed net and inner fixed net plate of the barrier shell are all concentrically arranged.

[0018] The three-dimensional screen drum of the cylindrical screen eliminates the thin-sheet structure 3D circular screen and the fixed pressure plate, and also eliminates the corresponding threaded fixings. At the same time, the inner fixed mesh plate of the three-dimensional unit screen is directly installed flush with the fixed groove and fixed with screw parts. Its beneficial effects are: first, the screen drum structure is simplified, the cost is reduced, the assembly is reduced, and the equipment cost is reduced; second, the inner fixed mesh plate and the fixed groove are installed flush, and there is no protruding structure inside, which effectively protects the inner fixed mesh plate and the circular screen frame. The overall structure is highly durable and does not require frequent replacement, which reduces maintenance costs; third, the installation accuracy of the two is high, which is conducive to obtaining a better air separation effect. At the same time, the radial height of the outer blocking part is less than the height of the circular tube screen hole. When the material is large or long, the cylindrical screen hole rotates to the top, the material will fall upside down, avoiding the material from entering the interior due to the excessive height of the outer blocking part and failing to achieve the blocking effect; this height setting improves the blocking effect and avoids blockage; fourth, the three-dimensional unit screen is a part externally installed on the circular screen frame, and can be disassembled and replaced by loosening the screw parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic front view of a three-dimensional screen drum of a cylindrical screen according to one embodiment of the present invention;

[0020] Figure 2 for Figure 1 A schematic cross-sectional view of a three-dimensional screen drum of a cylindrical screen is shown;

[0021] Figure 3 for Figure 3 A partially enlarged schematic diagram of a three-dimensional screen drum of a cylindrical screen is shown;

[0022] Figure 4 for Figure 1 A three-dimensional schematic diagram of the circular sieve frame shown;

[0023] Three-dimensional unit screen 1, inner fixed screen plate 10, mesh 100, fixing hole 101, rectangular positioning groove 102, round tube screen hole 11, circular ring end 111, outer blocking part 12, blocking shell 120, outer fixed screen 121, elastic buffer 13;

[0024] Circular screen frame 2, fixed groove 20, lower groove ring wall 21, arc hole 210, first through hole 211, crossbeam 22, circular rib plate 23, circular bone ring 24;

[0025] Hook cutter 01. DETAILED DESCRIPTION

[0026] The present invention will be described in further detail below with reference to the accompanying drawings. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, and the terms "inward" and "outward" refer to directions toward or away from the geometric center of a particular component, respectively.

[0027] Figures 1 to 4 The schematic diagram shows a three-dimensional screen drum of a cylindrical screen according to an embodiment of the present invention. As shown in the figure, the three-dimensional screen drum of the cylindrical screen comprises: a plurality of three-dimensional unit screens 1 and a circular screen frame 2;

[0028] The annular screen frame 2 is provided with multiple rows of fixed grooves 20, and each row of several fixed grooves 20 is arranged in a circumferential array. Each fixed groove 20 is an arc surface groove with an open upper end and an arc hole 210 on the lower bottom surface. The lower groove ring wall 21 of the arc hole 210 is provided with a first through hole 211;

[0029] The three-dimensional unit screen 1 includes an inner fixed mesh plate 10, a circular tube sieve hole 11 and an outer blocking portion 12. The inner fixed mesh plate 10 is an arc panel with the same outline as the fixed groove 20. Each mesh 100 thereof is slightly larger than the aperture of the circular tube sieve hole 11. The axis of the circular tube sieve hole 11 faces the central axis of the circular ring sieve frame 2. The inner end wall of the circular tube sieve hole 11 is welded to the circular tube sieve hole 11 and the outer end wall is welded to the outer blocking portion 12. The inner fixed mesh plate 10 is placed in the fixed groove 20. The inner fixed mesh plate 10 is flush with the lower groove ring wall 21 on all sides. The shaft sleeve circular arc hole 210 protrudes in the middle and the inner end is flush with the outer wall of the circular arc hole 210. The screw passes through the first through hole 211 and is threadedly connected to the fixing holes 101 around the inner fixed mesh plate 10.

[0030] The radial height of the outer blocking portion 12 is smaller than the height of the circular tube sieve hole 11 .

[0031] The three-dimensional screen drum of the cylindrical screen eliminates the thin-sheet structure 2D circular screen and the fixed pressure plate, and also eliminates the corresponding threaded fixings. At the same time, the inner fixed mesh plate 10 of the three-dimensional unit screen 1 is directly installed flush with the fixed groove 20 and fixed with a threaded part. Its beneficial effects are: first, the screen drum structure is simplified, the cost is reduced, the assembly is reduced, and the equipment cost is reduced; second, the inner fixed mesh plate 10 and the fixed groove 20 are installed flush, and there is no protruding structure inside, which effectively protects the inner fixed mesh plate 10 and the circular screen frame 2, and the overall structure is highly durable and does not require frequent Replacement reduces maintenance costs; thirdly, the installation accuracy of the two is high, which is conducive to obtaining better air separation effects. At the same time, the radial height of the outer blocking part 12 is less than the height of the circular tube sieve hole 11. When the material is large or long, the cylindrical sieve hole 11 rotates to the top, and the material will fall upside down to avoid the height of the outer blocking part 12 being too large and the material will enter the inside and make it impossible to achieve the blocking effect. This height setting improves the blocking effect and avoids blockage; fourthly, the three-dimensional unit screen 1 is a part externally installed on the circular screen frame 2, and it can be disassembled and replaced by loosening the threaded parts.

[0032] Preferably, rectangular positioning grooves 102 are formed around the inner fixed mesh plate 10. The depth of the rectangular positioning grooves 102 is equal to the thickness of the lower groove ring wall 21. The rectangular positioning grooves 102 are flush with the lower groove ring wall 21 of the sleeve. The beneficial effects are: this arrangement has high installation accuracy, easy size control, and is convenient for modular installation and production.

[0033] Preferably, the lower groove ring wall 21 is provided with a fixing hole 101 of a threaded hole structure, the threaded member passes through the first through hole 211 and is threadedly connected to the threaded hole, and the threaded member is spot welded to the first through hole 211 and the threaded hole. The beneficial effect is that the connection structure has high strength and is easy to assemble.

[0034] Preferably, the lower groove ring wall 21 is provided with a through-hole fixing hole 101. A threaded member passes through the first through-hole 211 and the fixing hole 101, and is threadedly connected to the nut member. The threaded member and the first through-hole 211, the nut member and the fixing hole 101, and the threaded member and the nut member are spot welded together at the connection points. This advantageously provides a high strength connection structure and facilitates assembly.

[0035] Furthermore, elastic buffers 13 are placed between the plurality of circular tube sieve holes 11. Preferably, the elastic buffers 13 are rubber integrally injection-molded and connected between the circular tube sieve holes 11. This advantageously reduces damage to the internal fixed mesh plate 10 from impact loads, maintains a constant shape over long periods of use, and offers a long service life and excellent long-term sorting performance.

[0036] Furthermore, the annular screen frame 2 comprises a T-shaped steel crossbeam 22 and an annular rib 23 formed by bending angle steel, welded or threaded together to form an annular ring 24. Several annular rings 24 are welded or threaded together to form a three-dimensional structural support frame. The vertical panels of the angle steel and the intermediate vertical plates of the T-shaped steel surround each other to form a fixing groove 20. Preferably, several hook cutters 01 are fixedly connected to the inner wall of the annular ring 24 of the annular screen frame 2. This configuration has the beneficial effect of providing a simple structure, high strength, and a good installation foundation.

[0037] Furthermore, the outer diameter of each circular sieve hole 11 is larger than the diameter of the mesh hole 100. Material is removed from the front end of the outer tube to form a protruding circular end cap 111. The circular end cap 111 is sleeved and connected to the mesh hole 100 and welded to the inner wall of the mesh hole 100. The rear end wall of the circular end cap 111 is in contact with the outer surface of the internal fixed mesh plate 10. This arrangement further improves the installation accuracy of the circular sieve hole 11, ensures screening accuracy, and avoids blockage.

[0038] Furthermore, the outer blocking portion 12 comprises an outer fixing mesh 121 and a blocking shell 120. The blocking shell 120 is a curved, arc-shaped member with an open inner end and one open side. The vertical end plates of the blocking shell 120 are fixedly or threadedly connected to the outer fixing mesh 121. The outer mesh openings of the outer fixing mesh 121 are welded to the outer ends of the circular tube mesh 11. Preferably, the outer arc plate of the blocking shell 120, the outer fixing mesh 121, and the inner fixing mesh plate 10 are all concentrically arranged. This arrangement advantageously provides excellent screening performance.

[0039] The above descriptions are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A three-dimensional screen drum of a cylindrical screen, characterized in that: It comprises: a plurality of three-dimensional unit screens (1) and a circular screen frame (2); The annular screen frame (2) is provided with a plurality of rows of fixed grooves (20), and each row of the fixed grooves (20) is arranged in a circumferential array. Each of the fixed grooves (20) is an arc surface groove with an open upper end and an arc hole (210) provided on the lower bottom surface. The lower groove ring wall (21) of the arc hole (210) is provided with a first through hole (211); The three-dimensional unit screen (1) comprises an inner fixed mesh plate (10), a circular tube sieve hole (11) and an outer blocking portion (12), wherein the inner fixed mesh plate (10) is an arc panel with the same profile as the fixed groove (20), each mesh hole (100) thereof is slightly larger than the aperture of the circular tube sieve hole (11), the axis of the circular tube sieve hole (11) faces the central axis of the annular screen frame (2), the inner end wall of the circular tube sieve hole (11) is welded to the circular tube sieve hole (11), and the outer end wall is welded to the outer blocking portion (12), the inner fixed mesh plate (10) is placed in the fixed groove (20), the inner fixed mesh plate (10) is flush with the lower groove ring wall (21) on all sides, the middle of the inner fixed mesh plate (10) protrudes with the shaft sleeve arc hole (210) and the inner end is flush with the outer wall of the arc hole (210), and the screw member passes through the first through hole (211) and is threadedly connected to the fixing holes (101) on all sides of the inner fixed mesh plate (10); The radial height of the outer blocking portion (12) is smaller than the height of the circular tube sieve hole (11).

2. The three-dimensional screen drum of a cylindrical screen according to claim 1, characterized in that: Rectangular positioning grooves (102) are formed around the inner fixed mesh plate (10), the depth of the rectangular positioning grooves (102) being equal to the thickness of the lower groove ring wall (21), and the rectangular positioning grooves (102) are flush with the lower groove ring wall (21) in equal size.

3. The three-dimensional screen drum of a cylindrical screen according to claim 1, characterized in that: The lower groove ring wall (21) is provided with a fixing hole (101) with a threaded hole structure, the threaded member passes through the first through hole (211) and is threadedly connected to the threaded hole, and the threaded member, the first through hole (211) and the threaded hole are fixed by spot welding at the connection point.

4. The three-dimensional screen drum of a cylindrical screen according to claim 1, characterized in that: The lower groove ring wall (21) is provided with a fixing hole (101) of a through-hole structure, the threaded member passes through the first through-hole (211) and the fixing hole (101) to be threadedly connected to the nut member, and the threaded member and the first through-hole (211), the nut member and the fixing hole (101), and the threaded member and the nut member are fixed by spot welding at the connection points.

5. The three-dimensional screen drum of a cylindrical screen according to claim 1, characterized in that: Elastic buffers (13) are also provided between the plurality of circular tube sieve holes (11).

6. The three-dimensional screen drum of a cylindrical screen according to claim 5, characterized in that: The elastic buffer (13) is a rubber integrally injection-molded and connected between the circular tube sieve holes (11).

7. The three-dimensional screen drum of a cylindrical screen according to claim 1, characterized in that: The annular screen frame (2) is a crossbeam (22) made of T-shaped steel and an annular rib plate (23) formed by bending angle steel, which are welded or screwed together to form an annular bone ring (24). A plurality of the annular bone rings (24) are welded or screwed together to form a three-dimensional structural support frame. The vertical panel of the angle steel and the middle vertical plate of the T-shaped steel surround each other to form the fixing groove (20).

8. The three-dimensional screen drum of the cylindrical screen according to claim 7, characterized in that: A plurality of hook cutting knives (01) are fixedly connected to the inner wall of the circular bone ring (24) of the circular screen frame (2).

9. The three-dimensional screen drum of a cylindrical screen according to claim 1, characterized in that: The outer tube diameter of each circular tube sieve hole (11) is larger than the diameter of the mesh hole (100); the front end of the outer tube is removed to form a protruding circular ring end (111); the circular ring end (111) is connected to the mesh hole (100) through a shaft sleeve and is welded to the inner hole wall of the mesh hole (100) to form a whole; the rear end wall of the circular ring end (111) is fitted and connected to the outer surface of the inner fixed mesh plate (10).

10. The three-dimensional screen drum of a cylindrical screen according to claim 1, characterized in that: The outer blocking portion (12) comprises an outer fixed net (121) and a blocking shell (120); the blocking shell (120) is an arc-shaped bent part with an open inner end and a side open end; a vertical end plate of the blocking shell (120) is fixedly connected or threadedly connected to the outer fixed net (121); and the outer mesh holes of the outer fixed net (121) are welded to the outer ends of the circular tube sieve holes (11); Alternatively, the outer arc plate, the outer fixing net (121), and the inner fixing net plate (10) of the blocking shell (120) are all concentrically arranged.

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