A powder briquetting machine with self-cleaning function

Abstract

This invention relates to a powder briquetting machine with a self-cleaning function, comprising a material support plate, a material frame disposed on the material support plate, a press head that can move up and down and has an upper concave cavity at the bottom, and a cavity cleaning unit. The cavity cleaning unit has a horizontally movable cleaning box, a roller brush rotatably mounted on the cleaning box, and a grate plate disposed inside the cleaning box, with the upper part of the roller brush extending above the cleaning box. Multiple grate teeth inserted into the lower part of the roller brush are provided at the end of the grate plate, so that the cleaning box has a first working position moved out of the press head and a second working position moved into the press head. When it is in the first working position, the press head can be moved down to squeeze into the material frame to compress the powder in the material frame into briquettes. When it is in the second working position, the roller brush can be rotated and the press head can be moved down to bend the bristles on the upper part of the roller brush to brush the inner wall of the cavity. When the bristles rotate to the grate teeth, the grate teeth can also sift out the powder mixed on them, thus achieving self-cleaning.

Description

Technical Field

[0001] This invention belongs to the field of briquetting machine technology, specifically relating to a powder briquetting machine with self-cleaning function. Background Technology

[0002] Powdered materials are common raw materials, and are frequently used in food processing (such as koji powder and seasoning powder), fireworks processing (such as gunpowder), metal processing (such as iron powder and aluminum powder), and wood processing (such as sawdust). Usually, these powdered materials need to be compressed into blocks before use to facilitate their effectiveness, transportation, storage, and sale.

[0003] Most existing powdered material briquettes are produced using briquetting machines, such as those disclosed in Chinese patents CN 223559155 U, CN202685350 U, CN 223395802 U, and CN 223456534 U. These briquetting machines compress powdered material into briquettes by pressing down with a cavity-type pressure head, in conjunction with a material support plate and a material frame. However, most of these briquetting machines do not have a cavity cleaning function. When pressing wet or semi-wet materials, the inner wall of the cavity is prone to sticking to the material, resulting in unstable weight of the briquettes formed during continuous production, which affects product yield and production efficiency. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a powder briquetting machine with excellent self-cleaning function when pressing wet or semi-wet powder.

[0005] To achieve the above objectives, the product in the technical solution adopted by this invention is a powder briquetting machine with a self-cleaning function, comprising:

[0006] Material support plate;

[0007] A material frame mounted on a material support plate;

[0008] The pressure head can move up and down, and its bottom is provided with an upward-concave cavity;

[0009] The briquetting machine also includes a cavity cleaning unit, which has a horizontally movable cleaning box, a roller brush rotatably mounted on the cleaning box, and a grate plate located inside the cleaning box. The upper part of the roller brush extends above the cleaning box, and the end of the grate plate is provided with multiple teeth that insert into the lower part of the roller brush.

[0010] The cleaning box has a first working position where it moves out of the pressure head and a second working position where it moves into the pressure head. When the cleaning box is in the first working position, the pressure head moves down and squeezes into the material frame, using the cavity to press the powder in the material frame into blocks, completing the block pressing operation. When the cleaning box is in the second working position, the roller brush rotates and the pressure head moves down, causing the bristles on the upper part of the roller brush to bend and brush the inner wall of the cavity. When the bristles in this part rotate to the grate teeth, the powder mixed on them is grated out by the grate teeth, achieving self-cleaning.

[0011] Preferably, the grate is inclined to form a high end and a low end, with the grate teeth located at the low end of the grate.

[0012] More preferably, the high end of the grate is rotatably connected to the cleaning box via a rotating shaft, making the tilt angle of the grate adjustable, and the cleaning box is connected with locking bolts to lock the relative position of the grate and the cleaning box.

[0013] More preferably, the two sides of the grate are folded vertically to form a skirt that fits against the inner wall of the cleaning box. The skirt is provided with a rotating shaft hole for the rotating shaft to pass through and an arc-shaped groove for the locking bolt to pass through. The center of the arc-shaped groove falls on the axis of the rotating shaft hole.

[0014] More preferably, the high end of the grate is spaced apart from the inner wall of the cleaning box to form a material extraction window.

[0015] Preferably, the roller brush remains rotating as the cleaning box moves.

[0016] Preferably, the powdery material expelled by the grating teeth falls below the grating plate.

[0017] Preferably, the cleaning box includes a box body and a U-shaped support plate framed on the bottom and sides of the box body, and the two ends of the roller brush pass through the box body and are rotatably connected to the support plate.

[0018] Preferably, the cavity cleaning unit further includes a light source and a sensor. When the cleaning box passes under the pressure head, the light emitted by the light source is reflected by the cavity and falls on the grate to form a light spot. The sensor is used to detect the light intensity of the light spot.

[0019] More preferably, the grate plate is provided with a mirror-like protrusion to receive the light spot, and the mirror-like protrusion protrudes from the upper surface of the grate plate.

[0020] More preferably, the sensor is signal-connected to a first drive unit that drives the cleaning box to move. When the value detected by the sensor is lower than a set value, the first drive unit controls the cleaning box to continue reciprocating between a first working position and a second working position. When the value detected by the sensor is higher than the set value, the first drive unit controls the cleaning box to remain in the first working position.

[0021] Preferably, the press head is composed of multiple individual blocks, and the powder briquetting machine also includes an electric cylinder that drives each individual block to move up and down independently.

[0022] More preferably, there are two pressure heads, which are spaced apart along the moving direction of the cleaning box, and the joints of the individual blocks on the two pressure heads are staggered.

[0023] More preferably, the number of the individual blocks that make up the two pressure heads is unequal.

[0024] Preferably, the material frame is horizontally movable on the material support plate, and the moving direction of the material frame is the same as the moving direction of the cleaning box.

[0025] More preferably, the powder briquetting machine further includes a first drive unit for driving the cleaning box to move and a second drive unit for driving the material frame to move, the second drive unit being located below the first drive unit.

[0026] Preferably, the powder briquetting machine further includes a frame, a cover, and a feeder. The frame supports the material support plate, the pressing head, and the cavity cleaning unit. The cover covers the frame and has an opening for the cavity cleaning unit to be exposed. The feeder is located on the frame and inside the cover, and is used to supply powder to the material frame.

[0027] More preferably, the opening and the feeder are located on opposite sides of the pressure head.

[0028] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0029] 1. It can not only squeeze the powdered material into the material frame by moving the pressure head down, thus completing the powdered material briquetting operation, but also brush the inner wall of the cavity by moving the cleaning box, rotating the roller brush and moving the pressure head down, so as to avoid material sticking to the inner wall of the cavity, making the weight of the briquetting blocks stable and improving the product yield.

[0030] 2. After the roller brush bristles brush the inner wall of the cavity, the rotation of the roller brush can also cause the grating teeth to grat out the powdery material trapped on the roller brush bristles, thus achieving self-cleaning of the roller brush. This ensures the brushing effect on the inner wall of the cavity during continuous production and is especially suitable for briquetting operations of wet or semi-wet powdery materials. Attached Figure Description

[0031] Figure 1 This is a three-dimensional schematic diagram of a preferred embodiment of the present invention.

[0032] Figure 2 yes Figure 1 A schematic diagram with the cover removed.

[0033] Figure 3 yes Figure 2 Front view diagram.

[0034] Figure 4 yes Figure 3 Cross-sectional view along the AA direction.

[0035] Figure 5 yes Figure 2 A schematic diagram of the medium-sized cavity cleaning unit; the roller brush is omitted for easier observation.

[0036] Figure 6 yes Figure 4 A partially enlarged schematic diagram of the medium-sized cavity cleaning unit and the pressure head, showing the cleaning box in its first working position.

[0037] Figure 7 yes Figure 4 A partially enlarged schematic diagram of the medium-sized cavity cleaning unit and the pressure head, showing the cleaning box in its second working position.

[0038] Figure 8 yes Figure 7 A schematic diagram of a light spot formed by a light source illuminating a cavity.

[0039] The components are as follows: 10. Frame; 20. Material support plate; 30. Material frame; 40. Press head; 41. Cavity; 42. Individual block; 421. Electric cylinder; 43. Joint seam; 50. Cavity cleaning unit; 51. Cleaning box; 511. Locking bolt; 512. Box body; 513. Support plate; 52. Roller brush; 53. Grate plate; 531. Grate teeth; 532. Skirt; 533. Through space; 534. Material extraction window; 535. Rotating shaft; 536. Rotating shaft hole; 537. Arc groove; 538. Light spot; 539. Mirror boss; 54. Light source; 55. Sensor; 60. Cover; 61. Opening; 70. Feeder; 81. First drive unit; 82. Second drive unit. Detailed Implementation

[0040] like Figures 1 to 8As shown, the powder briquetting machine with self-cleaning function provided by the present invention includes: a frame 10, a support plate 20, a material frame 30, a pressing head 40, a cavity cleaning unit 50, a cover 60, and a feeder 70. The support plate 20 extends horizontally in the front-to-back direction and is supported on the frame 10. The material frame 30 is movably mounted on the support plate 20. The pressing head 40 is movably connected to the frame 10, and the bottom of the pressing head 40 has an upwardly recessed... The cavity 41 and the cavity cleaning unit 50 include a cleaning box 51, a roller brush 52, and a grate 53. The cleaning box 51 is movably connected to the frame 10. The roller brush 52 is rotatably mounted on the cleaning box 51, with its upper part extending above the cleaning box 51. The grate 53 is located inside the cleaning box 51, and its end has multiple teeth 531 that insert into the lower part of the roller brush 52. The cleaning box 51 has a first working position below the pressure head 40 and a... In the second working position below the pressure head 40, when the cleaning box 51 is in the first working position, the pressure head 40 moves down and squeezes into the material frame 30, which can use the cavity 41 to press the powder in the material frame 30 into blocks, completing the block pressing operation. When the cleaning box 51 is in the second working position, the roller brush 52 rotates and the pressure head 40 moves down, causing the bristles on the upper part of the roller brush 52 to bend. Thus, the elastic force of these bristles, in conjunction with the rotation of the roller brush 52, cleans the inner wall of the cavity 41. During the brushing process, when the bristles of this part rotate to the grating teeth 531, the powdery material trapped on them is grated out by the grating teeth 531, achieving self-cleaning. The cover 60 covers the frame 10, and the cover 60 has an opening 61 for the cavity cleaning unit 50 to be exposed. The feeder 70 is located on the frame 10 and inside the cover 60. The feeder 70 is used to supply powdery material to the material frame 30. Specifically, the opening 61 and the feeder 70 are located on the front and rear sides of the pressure head 40, respectively.

[0041] By rationally allocating the number of times the pressing head 40 presses the material and the number of times the cleaning box 51 moves to the second working position, the powdered material can be pressed into blocks while avoiding material sticking to the inner wall of the cavity 41, thus stabilizing the weight of the produced blocks and improving the product yield. After the brush bristles of the roller brush 52 brush the inner wall of the cavity 41, the roller brush 52 can also be self-cleaned by the rotation of the roller brush 52 and the use of the grating teeth 531, ensuring the brushing effect of the inner wall of the cavity 41 during continuous production.

[0042] To prevent the powdery material from the grate from re-contaminating the roller brush, the grate plate 53 is further inclined, forming a high end and a low end. Both sides of the grate plate 53 are vertically folded downwards, forming a skirt 532 that fits against the inner wall of the cleaning box 51. Simultaneously, the grate teeth 531 are located at the low end of the grate plate 53. This arrangement creates a through-space 533 below the grate plate 53, wider at one end and narrower at the other. The roller brush 52 is located on the low end side of the grate plate 53. The rolling direction of the roller brush 52 should be controlled. In this embodiment, the low end of the grate plate 53 is its rear end, and the roller brush 52 should rotate from front to back to ensure proper rotation. When in operation, the powdery material grated by the grating teeth 531 falls into the through space 533 below the grate plate 53. At the same time, the high end of the grate plate 53 and the inner wall of the cleaning box 51 are spaced apart to form a material extraction window 534. A suction pipe can be connected to the material extraction window 534 to extract the powdery material grated by the grating teeth 531 from the large end of the through space 533. This arrangement also utilizes the vibration generated by the brush bristles of the roller brush 52 passing over the grating teeth 531 to shake the powdery material falling on the grate plate 53 to the rear end of the grate plate 53, where it is carried away by the roller brush 52, keeping the upper surface of the grate plate 53 highly clean and convenient for subsequent use.

[0043] To ensure the self-cleaning effect of the roller brush 52, the roller brush 52 continues to rotate while the cleaning box 51 moves; that is, the roller brush 52 only stops rotating when the cleaning box 51 stops moving.

[0044] To facilitate adjustment of the insertion angle and depth of the grating teeth 531 and to match different types of roller brushes 52, in this embodiment, the high end of the grate plate 53 is rotatably connected to the cleaning box 51 via a rotating shaft 535, making the tilt angle of the grate plate 53 adjustable. The cleaning box 51 is connected with a locking bolt 511 to lock the relative position of the grate plate 53 and the cleaning box 51. For ease of installation, the skirt 532 is further provided with a rotating shaft hole 536 for the rotating shaft 535 to pass through and an arc-shaped groove 537 for the locking bolt 511 to pass through. The center of the arc-shaped groove 537 falls on the axis of the rotating shaft hole 536.

[0045] To enhance the strength of the cleaning box 51, the cleaning box 51 further includes a box body 512 and U-shaped support plates 513 framed on the bottom and left and right sides of the box body 512. The left and right ends of the roller brush 52 pass through the box body 512 and are rotatably connected to the support plates 513.

[0046] To detect the cleaning effect of the cavity 41, in this embodiment, the cavity cleaning unit 50 also includes a light source 54 and a sensor 55. When the cleaning box 51 passes under the pressure head 40, the light emitted by the light source 54 is reflected by the cavity 41 and falls on the grate plate 53 to form a light spot 538. The sensor 55 is used to detect the light intensity of the light spot 538. This can prevent the light source 54 and the sensor 55 from being blocked by the powder falling in the air. In order to improve the reflective effect of the grate plate 53, the grate plate 53 is further provided with a mirror protrusion 539 to receive the light spot 538. The mirror protrusion 539 protrudes from the upper surface of the grate plate 53 to avoid the accumulation of powder.

[0047] The powder briquetting machine also includes a first drive unit 81 for moving the cleaning box 51 and a second drive unit 82 for moving the material frame 30. The sensor 55 is connected to the first drive unit 81. When the value detected by the sensor 55 is lower than the set value, the first drive unit 81 controls the cleaning box 51 to continue to move back and forth between the first working position and the second working position to continue to brush the cavity 41. When the value detected by the sensor 55 is higher than the set value, the first drive unit 81 controls the cleaning box 51 to stay in the first working position for briquetting operations. The second drive unit 82 is located below the first drive unit 81. Both the second drive unit 82 and the first drive unit 81 are driven by a servo electric cylinder in conjunction with a slide rail pair.

[0048] To improve the local compaction effect, in this embodiment, the press head 40 is composed of multiple individual blocks 42 spliced ​​together. The powder briquetting machine also includes an electric cylinder 421 that drives each individual block 42 to move up and down independently. The advantage of this setting is that during cleaning, the corresponding individual block 42 can be moved down to cooperate with the roller brush 52 for better brushing. During detection, the concentration of the light spot 538 can be increased by moving the corresponding individual block 42 down, which makes it easier to set the set value of the sensor 55. The timing of the downward movement of the individual block 42 can be calculated by the moving speed of the cleaning box 51 and its front and rear distance from the individual block 42. The electric cylinder 421 extends upward from the opening at the top of the cover 60.

[0049] Since some powdered materials require a high degree of compaction, the production efficiency of using a single pressure head 40 is low. Therefore, in this embodiment, there are two pressure heads 40, which are spaced apart along the moving direction of the cleaning box 51. The number of individual blocks 42 on the two pressure heads 40 is different, and the splicing seams 43 of the individual blocks 42 on the two pressure heads 40 are staggered to ensure the compaction effect and avoid mold gaps.

[0050] To facilitate unloading from the material frame 30, the material frame 30 and the second drive unit 82 can be moved up and down as a whole. The powder briquetting machine also includes a third drive unit (not shown in the figure) that drives it to move up and down.

[0051] This powder briquetting machine produces briquettes with uniform weight and flexible, controllable density, making it particularly suitable for briquetting wet or semi-wet powders (such as yeast).

[0052] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A wet or semi-wet powder briquetting machine with self-cleaning function, comprising: Material support plate; A material frame mounted on a material support plate; The pressure head can move up and down, and its bottom is provided with an upward-concave cavity; Cavity cleaning unit with a rotatable roller brush; Its features are: The cavity cleaning unit also has a horizontally movable cleaning box, a grate plate inside the cleaning box, a light source, and a sensor. The roller brush is rotatably mounted on the cleaning box, with its upper part protruding above the cleaning box. The grate plate is tilted to form a high end and a low end. The high end of the grate plate is rotatably connected to the cleaning box via a rotating shaft, making the tilt angle of the grate plate adjustable. The cleaning box is connected with locking bolts that lock the relative position of the grate plate and the cleaning box. The low end of the grate plate has multiple teeth that insert into the lower part of the roller brush. The high end of the grate plate is spaced apart from the inner wall of the cleaning box to form a material extraction window. The light source is located at the high end of the grate plate. When the cleaning box passes under the pressure head, the light emitted by the light source is reflected by the cavity and falls on the grate plate to form a light spot. The sensor is located on the upper part of the side wall of the cleaning box. The sensor is used to detect the light intensity of the light spot. The upper surface of the grate plate also has a mirror protrusion to receive the light spot. The mirror protrusion protrudes from the upper surface of the grate plate. The cleaning box has a first working position where it moves out of the pressure head and a second working position where it moves into the pressure head. When the cleaning box is in the first working position, the pressure head moves down and squeezes into the material frame, using the cavity to press the powder in the material frame into blocks, completing the block pressing operation. When the cleaning box is in the second working position, the roller brush rotates and the pressure head moves down, causing the bristles on the upper part of the roller brush to bend and brush the inner wall of the cavity. When the bristles in this part rotate to the grate teeth, the powder mixed on them is sieved out by the grate teeth, achieving self-cleaning. When the cleaning box moves, the roller brush continues to rotate, causing the powder sieved out by the grate teeth to fall into the through space under the grate plate. The vibration generated by the roller brush bristles passing through the grate teeth shakes the powder falling from the grate plate to the roller brush, keeping the mirror protrusion clean.

2. The wet or semi-wet powder briquetting machine according to claim 1, characterized in that: The two sides of the grate are folded vertically to form a skirt that fits against the inner wall of the cleaning box. The skirt is provided with a rotating shaft hole for the rotating shaft to pass through and an arc-shaped groove for the locking bolt to pass through. The center of the arc-shaped groove falls on the axis of the rotating shaft hole.

3. The wet or semi-wet powder briquetting machine according to claim 1, characterized in that: The cleaning box includes a box body and a U-shaped support plate framed at the bottom and sides of the box body. The two ends of the roller brush pass through the box body and are rotatably connected to the support plate.

4. The wet or semi-wet powder briquetting machine according to claim 1, characterized in that: The sensor is signal-connected to a first drive unit that drives the cleaning box to move. When the value detected by the sensor is lower than a set value, the first drive unit controls the cleaning box to continue to move back and forth between a first working position and a second working position. When the value detected by the sensor is higher than the set value, the first drive unit controls the cleaning box to remain in the first working position.

5. The wet or semi-wet powder briquetting machine according to claim 1, characterized in that: The press head is composed of multiple individual blocks, and the powder briquetting machine also includes an electric cylinder that drives each individual block to move up and down independently.

6. The wet or semi-wet powder briquetting machine according to claim 5, characterized in that: There are two pressure heads, which are spaced apart along the moving direction of the cleaning box, and the joints of the individual blocks on the two pressure heads are staggered.

7. The wet or semi-wet powder briquetting machine according to claim 6, characterized in that: The number of the individual blocks that make up the two pressure heads is not equal.

8. The wet or semi-wet powder briquetting machine according to claim 1, characterized in that: The material frame is horizontally movable on the material support plate, and the moving direction of the material frame is the same as the moving direction of the cleaning box.

9. The wet or semi-wet powder briquetting machine according to claim 8, characterized in that: The powder briquetting machine further includes a first drive unit for driving the cleaning box to move and a second drive unit for driving the material frame to move, with the second drive unit located below the first drive unit.

10. The wet or semi-wet powder briquetting machine according to claim 1, characterized in that: The powder briquetting machine also includes a frame, a cover, and a feeder. The frame supports the material support plate, the pressing head, and the cavity cleaning unit. The cover covers the frame and has an opening for the cavity cleaning unit to be exposed. The feeder is located on the frame and inside the cover, and is used to supply powder to the material frame.

11. The wet or semi-wet powder briquetting machine according to claim 10, characterized in that: The opening and the feeder are located on opposite sides of the pressure head.

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