Wood chip screening machine with double-layer screen drum and multi-stage differential rotation

Abstract

The utility model relates to the technical field of wood chip screening for fiberboards, in particular to a wood chip screening machine with a double-layer screen drum and multi-stage differential rotation, which comprises a rack for mounting the whole device, a double-layer screening device is mounted on the rack, a feeding device for conveying materials to the double-layer screening device is fixedly mounted at one end of the rack, and a discharging device is mounted at the other end of the rack. The rack is fixedly provided with an inclination angle adjusting device used for adjusting the working angle of the double-layer screening device, and a screen cleaning device is arranged on the side face of the double-layer screening device. The double-layer screening device comprises a double-layer screen drum, a material conveying belt is fixedly installed below the double-layer screen drum, and the double-layer screen drum is rotationally installed on a screening machine frame of the double-layer screen drum. Differential rotation of the double-layer screen drum can be achieved, the working inclination angle of the drum is manually adjusted, material blockage is reduced, and screening efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of drum screen technology, specifically a wood chip screening machine with a double-layer screen cylinder and multi-stage differential speed rotation. Background Technology

[0002] A drum screen is a commonly used screening device for materials. It separates materials according to different particle sizes by rotating and rolling them on the screen mesh, effectively separating particles of different diameters to obtain materials with the required particle size. Uniformly sized wood chips are crucial for fiberboard production. Currently, drum screens are fixedly installed in workshops. Due to the shape of the wood chips, the screen mesh is easily clogged during screening, causing damage, low screening efficiency, and affecting the company's production schedule. Therefore, there is an urgent need for a wood chip screening machine with a double-layer screen cylinder and multi-stage differential speed rotation. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a wood chip screening machine with a double-layer screen cylinder and multi-stage differential speed rotation, including a frame for mounting the entire device, a double-layer screening device rotatably mounted on the frame, a feeding device for conveying material to the double-layer screening device fixedly mounted at one end of the frame, and an angle adjustment device for adjusting the working angle of the double-layer screening device fixedly mounted on the frame, a screen cleaning device provided on the side of the double-layer screening device, the double-layer screening device including a double-layer screen cylinder, a material conveyor belt fixedly mounted below the double-layer screen cylinder, and the double-layer screen cylinder rotatably mounted on the screening machine frame of the double-layer screen cylinder.

[0004] The cleaning device includes a connecting rod, one end of which is rotatably connected to an actuator, the actuator being fixedly mounted on a guide rail slider, and the other end of which is rotatably connected to an eccentric wheel, the eccentric wheel being fixedly mounted on one end of a transmission shaft, a pulley being fixedly mounted in the middle of the transmission shaft, and the pulley being rotatably connected to a motor pulley via a belt.

[0005] The feeding device includes a feeding frame fixedly installed on the machine frame. The front of the feeding frame is provided with a rotating door and a control box. A feeding conveyor belt is fixedly installed above the feeding frame, and a feeding hopper is fixedly installed above the feeding conveyor belt.

[0006] The tilt adjustment device includes a base, two sets of guide rail sliders are fixedly installed on the base, a trapezoidal lead screw is fixedly installed on the base, a sliding plate is fixedly installed on the guide rail sliders, the sliding plate is rotatably connected to a second connecting rod, and the second connecting rod is rotatably connected to a lifting rod.

[0007] The multi-stage screen cylinder includes an inner bar screen, which is fixedly connected to the perforated screen by bolts. The inner bar screen and the perforated screen are rotatably mounted on a rotating wheel, which rotates on a rotating ring. The inner bar screen and the outer woven screen rotate coaxially.

[0008] The trapezoidal lead screw includes a lead screw, one end of which is rotatably connected to a fixed end, and the other end of which is rotatably connected to a support end. The guide rail slider includes a guide rail fixedly mounted on a base, a slider slidably connected above the guide rail, and a guide rail clamp slidably connected above the guide rail.

[0009] The frame includes a side beam type frame, with two sets of rotating wheels arranged below the side beam type frame, and a rotation center for adjusting the angle of the screening device is fixedly installed above the side beam type frame.

[0010] By employing the above technical solution, this utility model provides a wood chip screening machine with a double-layer screen cylinder and multi-stage differential speed rotation, which has at least the following beneficial effects:

[0011] 1. This wood chip screening machine with a double-layer screen cylinder and multi-stage differential speed rotation is equipped with a double-layer drum, which can adjust the screen aperture size and realize the screening of multiple materials at one time;

[0012] 2. This wood chip screening machine with a double-layer screen cylinder and multi-stage differential speed rotation is equipped with a screen cleaning device, which can clean the screen holes and improve screening efficiency by adjusting the motor speed and pulley diameter;

[0013] 3. This wood chip screening machine with a double-layer screen cylinder and multi-stage differential speed rotation is equipped with an inclination adjustment device, which can adjust the inclination angle of the cylinder by rotating the handwheel to adapt to the screening of different materials. Attached Figure Description

[0014] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.

[0015] In the attached diagram:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the double-layer screening device of this utility model.

[0018] Figure 3 This is a schematic diagram of the structure of the screening device of this utility model;

[0019] Figure 4 This is a schematic diagram of the feeding device of this utility model;

[0020] Figure 5 This is a schematic diagram of the tilt adjustment device of this utility model;

[0021] Figure 6 This is a schematic diagram of the double-layer sieve cylinder structure of this utility model;

[0022] Figure 7 This is an isometric schematic diagram of the screening device of this utility model;

[0023] Figure 8 This is a schematic diagram of the screening machine frame and material conveyor belt structure of this utility model;

[0024] Figure 9 This is a schematic diagram of the vehicle frame structure of this utility model;

[0025] In the diagram: 1. Frame; 11. Side beam frame; 12. Wheel; 13. Rotation center; 2. Double-layer screening device; 21. Double-layer screen cylinder; 211. Inner bar screen; 212. Rotating ring; 213. Outer woven screen; 214. Perforated screen; 215. Chain; 22. Material conveyor belt; 23. Screening frame; 3. Screen cleaning device; 31. Actuator; 32. Guide rail slider A; 33. Connecting rod one; 34. Eccentric wheel; 35. Drive shaft; 36. Pulley; 37. 38. Motor pulley; 4. Feeding device; 41. Feeding frame; 42. Rotary door; 43. Control box; 44. Feeding conveyor belt; 45. Feeding bin; 5. Inclination adjustment device; 51. Base; 52. Guide rail slider B; 521. Guide rail; 522. Slider; 523. Guide rail clamp; 53. Trapezoidal screw; 531. Screw; 532. Screw fixed end; 533. Screw support end; 54. Sliding plate; 55. Connecting rod II; 56. Lifting rod; Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Combination Figures 1-5As shown, this utility model provides: a wood chip screening machine with a double-layer screen cylinder and multi-stage differential speed rotation, including a frame 1 for supporting the various structures above. The frame 1 includes a steel side beam type frame, and passive wheels for changing the working site are installed under the side beam type frame. A multi-stage screening device 2 for screening wood chips is installed on the frame 1. The multi-stage screening device 2 includes a double-layer screen cylinder rotatably installed on the screening frame. The inner and outer rollers of the double-layer screen cylinder are provided with screen holes for screening wood chips. The diameter of the screen holes is determined according to the size of the wood chips. A feeding device 4 for fixedly installing and feeding material to the double-layer screening device 2 is installed at one end of the frame 1. During the operation of the double-layer screening device 2, wood chips enter the double-layer screening device 2 through the feeding device 4 via the conveyor belt. The rotation of the double-layer rollers realizes the screening of materials. Wood chips of qualified size are transported to the designated position by the material conveyor belt 22, realizing multi-stage material screening.

[0028] The cleaning device 3 includes a connecting rod 31, one end of which is connected to the actuator 32, and the other end of which is connected to the eccentric wheel 33. The eccentric wheel 33 is powered by a belt-driven motor 35. By changing the motor speed and the pulley diameter, the speed of the actuator 32 is changed, thereby realizing the double-layer drum cleaning operation.

[0029] The tilt adjustment device 5 includes a base 51, two sets of guide rail sliders B52 are fixedly installed on the base 51, a trapezoidal screw 53 is fixedly installed on the base 51, a sliding plate 54 is fixedly installed on the guide rail sliders, a connecting rod 55 is rotatably connected to the sliding plate 54, and a lifting rod 56 is rotatably connected to the connecting rod 55. The lifting rod is driven to move by the rotation of the trapezoidal screw, thereby realizing the adjustment of the working tilt angle of the double-layer screening device.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A two-deck screen drum multi-stage differential rotary wood chip screening machine, characterized in that, The utility model provides a double -deck screening device, including the frame (1) for installing whole device, double -deck screening device (2) is rotatably installed on the frame (1), it is characterized by: the frame (1) one end fixed mounting is with the feed device (4) of material transmission of double -deck screening device (2), and the frame (1) is fixedly installed with the inclination angle adjusting device (5) for adjusting the working angle of double -deck screening device (2), and the double -deck screening device (2) side is provided with the screen cleaning device (3).

2. A double-deck screen drum multi-stage differential rotary chip screening machine according to claim 1, characterized in that: The double -deck screening device (2) includes double -deck screening cylinder (21), the double -deck screening cylinder (21) is rotatably installed on the rotating wheel (25), the double -deck screening cylinder (21) below fixed mounting has material conveying belt (22), the material conveying belt (22) is fixedly installed on screening frame (23), the double -deck screening cylinder (21) is rotatably installed on the screening frame (23) of double -deck cylinder, the power of double -deck screening cylinder (21) comes from servo motor (24), the servo motor (24) is fixedly installed on screening frame (23).

3. A double-deck screen drum multi-stage differential rotary chip screening machine according to claim 1, characterized in that: The screen cleaning device (3) includes connecting rod one (33), the connecting rod one (33) one end rotatably connects actuating mechanism (31), the actuating mechanism is fixedly installed on guide rail sliding block A (32), the connecting rod one (33) other end rotatably connects eccentric wheel (34), the eccentric wheel (34) is fixedly installed on one end of transmission shaft (35), the transmission shaft (35) middle part fixedly installs pulley (36), the pulley (36) is rotatably connected with motor pulley (38) through belt (37).

4. A double-deck screen drum multi-stage differential rotary chip screening machine according to claim 1, characterized in that: The feed device (4) includes the feed frame (41) fixedly installed on the frame (1), the feed frame (41) front is provided with revolving door (42) and control box (43), the feed frame (41) above fixed mounting has feed conveying belt (44), and the feed conveying belt (44) above fixed mounting has feed bin (45).

5. A double-deck screen drum multi-stage differential rotary chip screening machine according to claim 1, characterized in that: The inclination angle adjusting device (5) includes base (51), the base (51) is fixedly installed on the frame (1), the base (51) above fixed mounting has two groups of guide rail sliding block B (52), the base (51) above fixed mounting has trapezoidal lead screw (53), the guide rail sliding block B (52) above fixed mounting has sliding plate (54), the sliding plate (54) rotatably connects with connecting rod two (55), the connecting rod two (55) rotatably connects with lifting rod (56).

6. A double-deck screen drum multi-stage differential rotary chip screening machine according to claim 2, characterized in that: The double -deck screening cylinder (21) includes inner layer grating screen (211), the inner layer grating screen (211) is fixedly connected with punching screen (214) through bolt, the inner layer grating screen (211) is rotatably installed with chain (215) on rotating wheel (25), the rotating wheel (25) rotates on rotating ring (212), the inner layer grating screen (211) rotates coaxially with outer layer woven screen (213).

7. A double-deck screen drum multi-stage differential rotary chip screening machine according to claim 5, characterized in that: The trapezoidal screw rod (53) comprises a screw rod (531), one end of the screw rod (531) is rotatably connected with a screw rod fixed end (532), the other end of the screw rod (531) is rotatably connected with a screw rod support end (533), the guide rail slider B (52) comprises a guide rail (521) fixedly installed on the base (51), a slider (522) is slidably connected above the guide rail (521), and a guide rail clamp (523) is slidably connected above the guide rail (521).

8. A double-deck screen drum multi-stage differential rotary chip screening machine according to claim 1, characterized in that: The rack (1) comprises a side beam type frame (11), two groups of rotating wheels (12) are arranged below the side beam type frame (11), and a rotating center (13) for adjusting the angle of the screening device is fixedly installed above the side beam type frame.

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