Press roller structure of biomass pellet fuel

Abstract

The utility model discloses a biomass pellet fuel compression roller structure which comprises compression rollers, a rotating frame and a circular mold, the compression rollers are installed on the rotating frame, the rotating frame and the compression rollers are both located in the circular mold, and the positions, corresponding to the compression rollers, of the side face of the rotating frame are each provided with a U-shaped frame. The two ends of the U-shaped frame are rotationally connected with the top and the bottom of the rotating frame through pin shafts correspondingly, and the U-shaped frame is movably connected to the surface of a roller shaft of the pressing roller in a sleeving mode. A fixed hinge seat is fixedly connected to the side face of the rotating frame, a movable hinge seat is fixedly connected to the side face of the U-shaped frame, threaded sleeves are movably hinged to the interiors of the fixed hinge seat and the movable hinge seat, and the two threaded sleeves corresponding to the pressing roller are in threaded connection with the surfaces of the two ends of the positive and negative tooth lead screw respectively. The positive and negative tooth screw rod can be screwed directly on the side face of the rotating frame, the two threaded sleeves can be pulled to be close to or away from each other, and therefore the gap between the pressing roller and the circular mold is driven to be increased or decreased, and operation is very convenient.

Description

Technical Field

[0001] This utility model relates to the field of pressure roller adjustment technology, specifically a pressure roller structure for biomass pellet fuel. Background Technology

[0002] In a vertical ring die pellet mill for biomass pellet fuel, the pressure rollers are used to extrude material inside the ring die. The material is then extruded and pelletized. The gap between the pressure rollers and the ring die directly affects the operation of the pellet mill. If the gap is too large, the material layer in the pelleting zone will thicken, increasing pressure, motor current, and the operating resistance of the pressure rollers, leading to slippage, vibration, reduced pellet output, or even no pellets being produced. If the gap is too small, the pressure rollers and ring die will be in direct contact, increasing wear and severely affecting the service life of both the ring die and the pressure rollers. Wear and deformation of the ring die guide opening will make feeding into the die holes difficult, gradually reducing pellet output and potentially causing pelleting difficulties or even shutdown. Therefore, adjusting the gap of the pressure rollers is crucial.

[0003] When adjusting the gap between the existing pressure roller and the rotating seat, it is necessary to simultaneously adjust the adjustment plate between the upper and lower ends of the rotating seat and the pressure roller shaft to ensure that the pressure roller shaft remains vertical and that the gap between the upper and lower ends of the pressure roller and the ring die is equal. Since the adjustment plate under the rotating frame is blocked after the ring die and the pressure roller are installed, the components need to be disassembled and reassembled in the later adjustment of the gap, which makes the adjustment more troublesome. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a pressure roller structure for biomass pellet fuel, which solves the problem that the adjustment plate below the rotating frame is blocked when adjusting the gap of the pressure roller in the existing vertical ring die pellet mill for biomass pellet fuel production, making the adjustment relatively troublesome.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A pressure roller structure for biomass pellet fuel includes a pressure roller, a rotating frame, and a ring die. The pressure roller is mounted on the rotating frame, and both the rotating frame and the pressure roller are located inside the ring die. A U-shaped frame is provided on the side of the rotating frame at the position of each pressure roller. The two ends of the U-shaped frame are rotatably connected to the top and bottom of the rotating frame by pins, and the U-shaped frame is movably sleeved on the roller shaft surface of the pressure roller.

[0007] The rotating frame is fixedly connected to a fixed hinge seat on its side, and the U-shaped frame is fixedly connected to a movable hinge seat on its side. Both the fixed hinge seat and the movable hinge seat have threaded sleeves that are movably hinged inside. The two threaded sleeves corresponding to the pressure roller are respectively connected to the surface threads at both ends of the positive and negative threaded rods.

[0008] Preferably, the pin is located on the side of the pressure roller shaft away from the movable hinge seat.

[0009] Preferably, the rotating frame is provided with a movable groove at the position corresponding to the pressure roller shaft.

[0010] Preferably, the U-shaped frame is rotatably connected to the roller shaft of the pressure roller via a sealed bearing.

[0011] Preferably, the positive and negative threaded screws are arranged horizontally and located at half the height of the pressure roller and the U-shaped frame.

[0012] Preferably, a sleeve is fixedly connected to the end of the positive and negative threaded rod that is away from the fixed hinge seat.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This invention connects the upper and lower roller shafts of the pressure roller using a U-shaped frame. Fixed hinge seats, movable hinge seats, threaded sleeves, and positive and negative threaded rods are installed on the sides of the U-shaped frame and the rotating frame. The positive and negative threaded rods can be directly screwed on the side of the rotating frame to pull the two threaded sleeves closer or further apart, thereby increasing or decreasing the gap between the pressure roller and the ring die. This makes operation very convenient and solves the problem of the existing vertical ring die pellet mill for biomass pellet fuel production, where the adjustment plate below the rotating frame is obstructed during later gap adjustments, making adjustment difficult. Attached Figure Description

[0015] Figure 1 This is a top view of the present invention;

[0016] Figure 2 This is a top view of the internal structure of the U-shaped frame of this utility model;

[0017] Figure 3 This is a side view of the corresponding position of the U-shaped frame of this utility model.

[0018] In the diagram: 1. Pressure roller; 2. Rotating frame; 201. Movable groove; 3. Ring die; 4. U-shaped frame; 5. Pin; 6. Fixed hinge seat; 7. Movable hinge seat; 8. Threaded sleeve; 9. Positive and negative threaded rod; 901. Sleeve; 10. Sealed bearing. Detailed Implementation

[0019] 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.

[0020] like Figure 1-3 As shown, this utility model provides a technical solution: a pressure roller structure for biomass pellet fuel, including a pressure roller 1, a rotating frame 2, and a ring die 3. The pressure roller 1 is mounted on the rotating frame 2, and both the rotating frame 2 and the pressure roller 1 are located inside the ring die 3. A U-shaped frame 4 is provided on the side of the rotating frame 2 at the position corresponding to each pressure roller 1. The two ends of the U-shaped frame 4 are rotatably connected to the top and bottom of the rotating frame 2 respectively through pins 5. The pins 5 are located on the side of the roller shaft of the pressure roller 1 away from the movable hinge seat 7, and the U-shaped frame 4 is movably sleeved on the roller shaft surface of the pressure roller 1. The rotating frame 2 is provided with a movable groove 201 at the position corresponding to the roller shaft of the pressure roller 1. The U-shaped frame 4 is rotatably connected to the roller shaft of the pressure roller 1 through a sealed bearing 10.

[0021] A fixed hinge seat 6 is fixedly connected to the side of the rotating frame 2, and a movable hinge seat 7 is fixedly connected to the side of the U-shaped frame 4. Both the fixed hinge seat 6 and the movable hinge seat 7 are movably hinged with threaded sleeves 8 inside. The two threaded sleeves 8 corresponding to the pressure roller 1 are respectively threaded to the surfaces of the two ends of the positive and negative threaded rods 9. The positive and negative threaded rods 9 are set horizontally and are located at half the height of the pressure roller 1 and the U-shaped frame 4. A sleeve 901 is fixedly connected to the end of the positive and negative threaded rods 9 that is away from the fixed hinge seat 6.

[0022] Working principle:

[0023] All drive structures related to the rotation of pressure roller 1 remain unchanged; only the structure related to the gap adjustment of pressure roller 1 is changed. By using a wrench to turn sleeve 901 on the side of rotating frame 2, the positive and negative threaded rods 9 are rotated. The positive and negative threaded rods 9 pull the two threaded sleeves 8 closer to or further away from each other, thereby causing U-shaped frame 4 to rotate around pin 5 away from or closer to the inner wall of ring die 3. This causes pressure roller 1 to move closer to or away from ring die 3, increasing or decreasing the gap between pressure roller 1 and ring die 3. The operation is very convenient.

[0024] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pressure roller structure for biomass pellet fuel, comprising a pressure roller (1), a rotating frame (2), and a ring die (3), wherein the pressure roller (1) is mounted on the rotating frame (2), and both the rotating frame (2) and the pressure roller (1) are located inside the ring die (3), characterized in that: A U-shaped frame (4) is provided on the side of the rotating frame (2) at the position of each pressure roller (1). The two ends of the U-shaped frame (4) are rotatably connected to the top and bottom of the rotating frame (2) through pins (5), and the U-shaped frame (4) is movably sleeved on the roller shaft surface of the pressure roller (1). The rotating frame (2) is fixedly connected to a fixed hinge seat (6) on its side, and the U-shaped frame (4) is fixedly connected to a movable hinge seat (7) on its side. Both the fixed hinge seat (6) and the movable hinge seat (7) are movably hinged with threaded sleeves (8) inside. The two threaded sleeves (8) corresponding to the pressure roller (1) are respectively threaded to the surfaces of the positive and negative threaded rods (9).

2. The pressure roller structure for biomass pellet fuel according to claim 1, characterized in that: The pin (5) is located on the side of the roller shaft of the pressure roller (1) away from the movable hinge seat (7).

3. The pressure roller structure for biomass pellet fuel according to claim 1, characterized in that: The rotating frame (2) is provided with a movable groove (201) at the position of the roller shaft corresponding to the pressure roller (1).

4. The pressure roller structure for biomass pellet fuel according to claim 1, characterized in that: The U-shaped frame (4) is rotatably connected to the roller shaft of the pressure roller (1) via a sealed bearing (10).

5. The pressure roller structure for biomass pellet fuel according to claim 1, characterized in that: The positive and negative threaded screws (9) are set horizontally and are located at half the height of the pressure roller (1) and the U-shaped frame (4).

6. The pressure roller structure for biomass pellet fuel according to claim 1, characterized in that: A sleeve (901) is fixedly connected to the end of the positive and negative threaded rod (9) that is away from the fixed hinge seat (6).

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