Sorter drum screen with replaceable screen plate

Abstract

The utility model relates to the technical field of screening machinery, in particular to a sorter drum screen with a replaceable screen plate, which comprises a middle ring and fixing rings arranged on one side or two sides of the middle ring, the middle ring and the fixing rings are coaxially arranged, and the outer sides of the middle ring and the fixing rings are fixedly connected through supporting rods; the movable ring is arranged between the middle ring and the fixed ring, one side of the screen drum is detachably connected with the middle ring, the other side of the screen drum is detachably connected with the movable ring, a bolt is fixedly welded to the surface of the side, facing the fixed ring, of the movable ring, a through hole is formed in the surface of the fixed ring, and the end of the bolt penetrates through the through hole and is in threaded connection with a nut. The screen drum is tensioned by the movable ring in the axial direction; the middle ring and the fixing ring are connected to form an independent supporting frame, no protruding structure exists in the screen drum, the geometric roundness of an inner cavity of the screen drum is guaranteed, and material flowing is prevented from being blocked; the inner wall of the screen drum is smooth and continuous, materials can be evenly distributed in the axial direction and pass through the screen holes, and the screening efficiency and precision are remarkably improved.

Description

A cylindrical screen for a cleaning machine with replaceable screen plates Technical Field

[0001] This utility model relates to the field of screening machinery technology, specifically to a cylindrical screen for a cleaning machine with replaceable screen plates. Background Technology

[0002] As shown in Figure 4, the existing cylindrical screen for cleaning machines has a support rod 3A installed inside the screen cylinder 4A, welded to the annular rings at both ends to form an integral structure. The internal support rod 3A expands the screen cylinder 4A from the inside, evenly distributing the force and preventing deformation under high-speed rotation or material impact. Furthermore, it allows for easy and quick disassembly of the screen cylinder for cleaning. However, the internal placement of the support rod 3A prevents the inner wall of the screen cylinder 4A from forming a regular circular cross-section. The protrusion of the support rod 3A itself becomes an obstruction to material flow, easily causing accumulation or deviation of the screened material, reducing screening accuracy and efficiency. If the support rod 3A were located externally, it would obstruct the screen cylinder, affecting its disassembly, assembly, and connection. Summary of the Invention

[0003] I. Technical problems to be solved

[0004] The purpose of this utility model is to provide a cylindrical sieve for a cleaning machine with replaceable sieve plates, a round inner cavity, and easy disassembly and installation of the sieve cylinder for cleaning.

[0005] II. Technical Solution

[0006] This utility model is achieved through the following technical solution:

[0007] This utility model proposes a cylindrical sieve for a cleaning machine with replaceable sieve plates, including an intermediate ring and fixed rings disposed on one or both sides of the intermediate ring. The intermediate ring and fixed rings are coaxially arranged, and the outer sides of the intermediate ring and fixed rings are fixedly connected by a support rod. It also includes a sieve cylinder and a movable ring disposed between the intermediate ring and the fixed ring. One side of the sieve cylinder is detachably connected to the intermediate ring, and the other side is detachably connected to the movable ring. A bolt is fixedly welded to the surface of the movable ring facing the fixed ring. A through hole is opened on the surface of the fixed ring, and the end of the bolt passes through the through hole and is connected to a nut by a thread. The sieve cylinder is axially tightened by the movable ring.

[0008] Furthermore, the intermediate ring and the movable ring are provided with multiple threaded holes evenly distributed around their circumferences. The screen cylinder is provided with ring plates on both sides of its edges. The ring plates are provided with positioning holes evenly distributed around their circumferences. The positioning holes and the threaded holes are coaxially opposite to each other. The threaded holes are threadedly connected to screws.

[0009] Furthermore, an annular groove is formed on the end face of the intermediate ring, and the ring plate is fitted into the annular groove.

[0010] Furthermore, the sieve cylinder includes at least two arc-shaped sieve plates that can be joined together in the circumferential direction to form a cylindrical shape.

[0011] Furthermore, the inner ring of the movable ring has a protruding limiting ring on the side facing the middle ring, and the inner wall of the screen cylinder is in close contact with the outer wall of the limiting ring.

[0012] III. Beneficial Effects

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

[0014] 1. The support rod of this utility model is located outside the screen cylinder, connecting the intermediate ring and the fixed ring to form an independent support frame. There are no protruding structures inside the screen cylinder, ensuring the geometric integrity of the inner cavity of the screen cylinder and avoiding obstruction of material flow. The inner wall of the screen cylinder is smooth and continuous, and the material can be evenly distributed along the axial direction and pass through the screen holes, significantly improving screening efficiency and accuracy.

[0015] 2. The movable ring axially tightens the screen cylinder with bolts and nuts, and the screen cylinder is evenly stretched into a standard cylindrical shape under tension, avoiding local deformation caused by the internal support rod; during disassembly, the screen cylinder can be released simply by loosening the nut, without damaging the support frame, thus improving maintenance efficiency.

[0016] 3. The annular groove of the middle ring and the limiting ring of the movable ring work together to ensure axial and radial alignment of the screen cylinder during installation, avoiding stress concentration or uneven screening caused by assembly misalignment. Attached Figure Description

[0017] Figure 1 is a three-dimensional structural diagram of this utility model;

[0018] Figure 2 is a three-dimensional structural diagram of Figure 1 from another perspective;

[0019] Figure 3 is a front view of this utility model;

[0020] Figure 4 is a schematic diagram of the existing cylindrical screen structure;

[0021] 1. Intermediate ring; 11. Annular groove; 2. Fixed ring; 21. Through hole; 3. Support rod; 4. Screen cylinder; 41. Ring plate; 42. Arc-shaped screen plate; 411. Positioning hole; 5. Movable ring; 51. Limiting ring; 6. Bolt; 7. Nut; 8. Threaded hole; 9. Screw. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] A cylindrical sieve for a cleaning machine with replaceable sieve plates, as shown in Figures 1-3, includes an intermediate ring 1 and fixed rings 2 disposed on one or both sides of the intermediate ring 1. The intermediate ring 1 and fixed rings 2 are coaxially arranged, and the outer sides of the intermediate ring 1 and fixed rings 2 are fixedly connected by support rods 3. It also includes a sieve cylinder 4 and a movable ring 5 disposed between the intermediate ring 1 and fixed rings 2. The diameter of the movable ring 5 is smaller than the diameter of the fixed rings 2 and the intermediate ring 1. One side of the sieve cylinder 4 is detachably connected to the intermediate ring 1, and the other side is detachably connected to the movable ring 5. A bolt 6 is fixedly welded to the surface of the movable ring 5 facing the fixed ring 2. A through hole 21 is opened on the surface of the fixed ring 2, and the end of the bolt 6 passes through the through hole 21 and is connected to a nut 7 by thread.

[0024] The two sides of the screen cylinder 4 are connected and fixed to the intermediate ring 1 and the movable ring 5, respectively. Then, nuts 7 are screwed onto the ends of bolts 6. After the nuts 7 are tightened, the movable ring 5 moves towards the fixed ring 2 and tightens, thus pulling the screen cylinder 4 axially and fixing it. The support rod 3 is located outside the screen cylinder 4, connecting the intermediate ring 1 and the fixed ring 2 to form an independent support frame. There are no protruding structures inside the screen cylinder 4, ensuring the geometric roundness of the inner cavity of the screen cylinder 4 and avoiding obstruction of material flow. The inner wall of the screen cylinder 4 is smooth and continuous, and the material can be evenly distributed along the axial direction and pass through the screen holes, significantly improving screening efficiency and accuracy.

[0025] In this embodiment, a connection structure for the screen cylinder 4 is provided. Multiple threaded holes 8 are evenly distributed circumferentially on the surfaces of the intermediate ring 1 and the movable ring 5. Ring plates 41 are provided on both sides of the screen cylinder 4. Positioning holes 411 are evenly distributed circumferentially on the surfaces of the ring plates 41. The positioning holes 411 and the threaded holes 8 are coaxially opposite each other. Screws 9 are threadedly connected to the threaded holes 8. In use, the screen cylinder 4 is fixed by passing the screws 9 through the positioning holes 411 and threading them to the threaded holes 8. The movable ring 5 is axially tightened to the screen cylinder 4 by bolts 6 and nuts 7. The screen cylinder 4 is evenly tensioned into a standard cylindrical shape, avoiding localized deformation caused by the internal support rod 3. Disassembly only requires loosening the nuts 7 to release the screen cylinder 4 without damaging the support frame, thus improving maintenance efficiency.

[0026] In addition, the screen cylinder 4 can also be detachably connected to the movable ring 5 and the intermediate ring 1 by means of buckles, pins, etc.

[0027] Among them, an annular groove 11 is provided on the end face of the middle ring 1, and the ring plate 41 is fitted into the annular groove 11. The annular groove 11 positions the ring plate 41, which can improve the assembly efficiency and assembly accuracy of the screen cylinder 4.

[0028] The sieve cylinder 4 includes an arc-shaped sieve plate 42 that can be closed in the circumferential direction to form a cylindrical shape. There are at least two arc-shaped sieve plates 42. Multiple arc-shaped sieve plates 42 can be used in combination to facilitate replacement, disassembly and cleaning of the inner wall of the arc-shaped sieve plate 42.

[0029] The inner ring of the movable ring 5 has a protruding limiting ring 51 on the side facing the middle ring 1, and the inner wall of the screen cylinder 4 is in close contact with the outer wall of the limiting ring 51. The limiting ring 51 restricts the inner wall of the end of the screen cylinder 4, maintains the cylindrical structure of the screen cylinder 4, and makes the structure of the screen cylinder 4 stable and not easily deformed.

[0030] The annular groove 11 of the intermediate ring 1 works in conjunction with the limiting ring 51 of the movable ring 5 to ensure axial and radial alignment of the screen cylinder 4 during installation, thus avoiding stress concentration or uneven screening caused by assembly misalignment.

[0031] The above embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention. The technical content for which protection is sought in the present invention has been fully described in the claims.

Claims

1. A cylindrical sieve for a cleaning machine with replaceable sieve plates, characterized in that, The system includes an intermediate ring and fixed rings disposed on one or both sides of the intermediate ring. The intermediate ring and fixed rings are coaxially arranged, and their outer sides are fixedly connected by a support rod. The system also includes a screen cylinder and a movable ring disposed between the intermediate ring and the fixed ring. One side of the screen cylinder is detachably connected to the intermediate ring, and the other side is detachably connected to the movable ring. A bolt is fixedly welded to the surface of the movable ring facing the fixed ring. A through hole is opened on the surface of the fixed ring, and the end of the bolt passes through the through hole and is connected to a nut by a thread. The screen cylinder is axially tightened by the movable ring.

2. A cylindrical sieve for a cleaning machine with replaceable sieve plates according to claim 1, characterized in that, The intermediate ring and the movable ring are provided with multiple threaded holes evenly distributed on their circumferential surfaces. The screen cylinder is provided with ring plates on both sides of its edge. The ring plates are provided with positioning holes evenly distributed on their circumferential surfaces. The positioning holes and the threaded holes are coaxially opposite to each other. The threaded holes are threadedly connected to screws.

3. A cylindrical sieve for a cleaning machine with replaceable sieve plates according to claim 2, characterized in that, An annular groove is provided on the end face of the intermediate ring, and the ring plate is fitted into the annular groove.

4. A cylindrical sieve for a cleaning machine with replaceable sieve plates according to claim 1, characterized in that, The sieve cylinder includes at least two arc-shaped sieve plates that can be joined together in the circumferential direction to form a cylindrical shape.

5. A cylindrical sieve for a cleaning machine with replaceable sieve plates according to claim 1 or 4, characterized in that, The inner ring of the movable ring has a protruding limiting ring on the side facing the middle ring, and the inner wall of the screen cylinder is in close contact with the outer wall of the limiting ring.

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