An annular scraper mechanism for an annular film of a pellet machine

Abstract

The present invention discloses an annular scraper mechanism of an annular membrane of a pellet machine, comprising an annular outer gear, a plurality of scrapers, an annular mounting block, and a plurality of groups of elastic members; the plurality of scrapers are connected to the bottom of the annular outer gear in an up-and-down sliding manner, and are arranged in a circular array around the center of the annular outer gear; the mounting block is located above the annular outer gear, and an annular surface of the bottom of the mounting block is provided with groove portions and convex portions at intervals; a position of the annular outer gear corresponding to each scraper is provided with a penetration groove, and a penetration portion extending from the penetration groove is provided on the top surface of the scraper; a plurality of groups of elastic members are sequentially arranged between the plurality of scrapers and the annular outer gear, and each group of elastic members is used to keep the penetration portion on the corresponding scraper against the annular surface of the mounting block; the scraper is caused to move up and down while rotating, which has an effect similar to back-and-forth cutting, has the effect of making the cross-section of the pellets smoother, reducing debris generated during the cutting process, and improving the quality of the pellets.

Description

Technical Field

[0001] The invention relates to a pellet machine, in particular to an annular scraper mechanism of an annular film of a pellet machine and the pellet machine. Background Art

[0002] A pellet machine is required in the production of biomass pellets, feed, and other products. A pellet machine typically includes an annular membrane, an annular scraper mechanism, and a pressure roller. The pressure roller works with the annular membrane to squeeze the raw material powder, which is then formed outward through the material holes of the annular membrane. In existing annular scraper mechanisms, several scrapers are directly fixed to the bottom surface of an annular outer gear and arranged in a circular array around the center of the annular outer gear. Specifically, the scrapers surround the outer side of the annular membrane, and the annular outer gear and scrapers rotate together, causing the scrapers to intermittently scrape the formed raw material to form pellets.

[0003] Directly scraping the formed raw materials will easily lead to uneven and rough cross-sections of the particles. At the same time, debris is easily generated during the scraping process, especially for biomass particles. Summary of the Invention

[0004] The present application provides an annular scraper mechanism for an annular membrane of a pellet machine and a pellet machine, so that the scraper can move up and down while rotating, achieving an effect similar to back and forth cutting. It can solve the problem that the existing annular scraper mechanism directly scrapes the formed raw materials, resulting in uneven and rough cross-sections of the pellets and the generation of debris.

[0005] In the present application, a ring-shaped scraper mechanism of a pellet machine ring membrane is provided, comprising a ring-shaped outer gear and several scrapers, the ring-shaped outer gear is used to be rotatably connected to the pellet machine, and is characterized in that it also comprises a ring-shaped mounting block and several groups of elastic members with the same number as the scrapers; several of the scrapers are connected to the bottom of the ring-shaped outer gear for sliding up and down, and are arranged in a circular array around the center of the ring-shaped outer gear; the mounting block is used to be fixedly connected to the pellet machine and is located above the ring-shaped outer gear, and the annular surface of the bottom of the mounting block is spaced apart with groove parts and convex parts; the position of the ring-shaped outer gear corresponding to each of the scrapers is provided with a pass-through groove, and the top surface of the scraper is extended with a pass-through part passing through the pass-through groove; several groups of elastic members are sequentially arranged between several of the scrapers and the ring-shaped outer gear, and each group of elastic members is used to keep the pass-through part on the corresponding scraper against the annular surface of the mounting block.

[0006] By adopting the above technical solution, as the annular external gear rotates, the scraper cooperates with the groove part and the convex part on the annular surface to slide up and down, and when scraping off the formed raw materials, it has an effect similar to back and forth cutting. Compared with the existing annular scraper mechanism that directly scrapes off the formed raw materials, the cross-section is smoother and less likely to produce debris.

[0007] In one embodiment, the annular external gear includes a first upper annular block, a first lower annular block, and several pairs of connecting blocks with the same number as the scrapers; the bottom surface of the first upper annular block is provided with a first annular groove, and the first upper annular block is also provided with the same number of upper through-grooves as the scrapers; the first lower annular block is detachably connected to the first upper annular block, and the first lower annular block is also provided with the same number of lower through-grooves as the scrapers, and the lower through-grooves and the upper through-grooves correspond one to one to form the through-grooves; each pair of the connecting blocks is fixedly connected to the first annular groove and is located on both sides of the upper through-grooves, and the inner side surfaces of each pair of the connecting blocks are provided with sliding grooves; both sides of the scraper are fixed with sliders that cooperate with the sliding grooves.

[0008] By adopting the above technical solution, the sliding connection between all the scrapers and the annular external gear can be easily completed by assembling the annular external gear.

[0009] In one embodiment, the annular external gear is rotatably connected to the mounting block.

[0010] By adopting the above technical solution, the mounting block is fixedly connected to the pellet machine, the annular external gear is rotatably connected to the pellet machine, and the annular external gear is rotatably connected to the mounting block, that is, the annular external gear is first rotated to the mounting block, and then the mounting block is fixedly connected to the pellet machine, which facilitates the connection between the annular scraper mechanism and the pellet machine, and also facilitates the subsequent inspection and cleaning of the annular scraper mechanism.

[0011] In one embodiment, the mounting block includes a second upper annular block and a second lower annular block; the second upper annular block is stepped, including an upper ring with a larger diameter and a lower ring with a smaller diameter, the bottom surface of the upper ring is the annular surface one, and the outer wall of the lower ring is provided with a circle of upper limit rollers; the second lower annular block is detachably connected to the second upper annular block, and the outer wall of the second lower annular block is provided with a circle of lower limit rollers; the first upper annular block and the first lower annular block are provided with a circle of intermediate limit rollers.

[0012] By adopting the above technical solution, the rotational connection between the annular outer gear and the mounting block can be easily completed through the cooperation of the upper limiting roller, the middle limiting roller and the lower limiting roller, and then by assembling the mounting block.

[0013] In one embodiment, the elastic member is a plurality of springs, which are arranged in the slide groove and between the inner wall of the bottom of the slide groove and the slider.

[0014] By adopting the above technical solution and selecting a spring as the elastic member, during the assembly of the outer gear, the spring is first placed in the slide groove and then the scraper is placed, which can easily complete the connection of the elastic member.

[0015] In one embodiment, the connecting block is L-shaped, a vertical portion of which passes through the lower outlet groove, and the sliding groove is provided on the vertical portion of the connecting block.

[0016] With the above technical solution, the slide groove is arranged in the vertical part of the connecting block, and the horizontal part of the connecting block remains in the first annular groove, so that the height of the slide groove is not limited by the height of the first annular groove, and the slide groove can be more conveniently matched with the spring.

[0017] In one embodiment, the top of each scraper protruding portion is rotatably connected to a guide wheel.

[0018] By adopting the above technical solution and setting a guide wheel, the cooperation between the scraper and the annular surface of the mounting block is smoother.

[0019] To sum up, in this application, a ring-shaped scraper mechanism of the annular membrane of a pellet machine enables the scraper to move up and down while rotating, which has an effect similar to back and forth cutting, making the cross-section of the pellets smoother, reducing the debris generated during the cutting process, and improving the quality of the pellets. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below.

[0021] Figure 1 This is a schematic diagram of the structure of this utility;

[0022] Figure 2 It is a schematic diagram of the direct connection between the annular external gear and the scraper;

[0023] Figure 3 It is a schematic diagram of the connection between the annular external gear and the mounting block;

[0024] Figure 4 This is the main view of this utility;

[0025] Figure 5 for Figure 4 Cross-sectional view along AA;

[0026] Figure 6 for Figure 5 Enlarged schematic diagram of part A.

[0027] In the figure, 1. annular external gear; 1-1. first upper annular block; 1-11. first annular groove; 1-12. upper through-groove; 1-2. first lower annular block; 1-21. lower through-groove; 1-3. connecting block; 1-31. slide groove; 2. scraper; 21. slider; 3. mounting block; 3-1. second upper annular block; 3-11. groove portion; 3-12. raised portion; 3-2. second lower annular block; 4. elastic member; 5. upper limit roller; 6. lower limit roller; 7. middle limit roller; 8. through-groove; 9. guide wheel. DETAILED DESCRIPTION

[0028] The following is a further description with reference to the accompanying drawings.

[0029] A circular scraper mechanism for an annular film in a pellet machine comprises an annular external gear 1 and a plurality of scrapers 2. The annular external gear 1 is rotatably connected to the pellet machine. Specifically, the pellet machine is provided with a motor, the output shaft of which is fixedly connected to a gear meshing with the annular external gear 1, and the motor drives the annular external gear 1 to rotate.

[0030] For the existing annular scraper mechanism, several scrapers 2 are directly fixedly connected to the bottom surface of the annular outer gear 1 and are arranged in a circular array around the center of the annular outer gear 1, that is, several scrapers 2 are arranged around the outside of the annular membrane, and the raw material in the annular membrane is formed outward through the material holes of the annular membrane. The annular outer gear 1 and the scraper 2 rotate together, so that the scraper 2 intermittently scrapes the formed raw material to form particles.

[0031] See also Figure 1 and Figure 3 For this application, the annular scraper mechanism also includes an annular mounting block 3 and several groups of elastic members 4, the same number as the scrapers 2. The scrapers 2 are all connected to the bottom of the annular external gear 1 by sliding up and down, and are arranged in a circular array around the center of the annular external gear 1.

[0032] See also Figure 2In one embodiment, preferably, the arrangement for sliding up and down between the scraper 2 and the annular external gear 1 can be: the annular external gear 1 includes a first upper annular block 1-1, a first lower annular block 1-2, and a plurality of pairs of connecting blocks 1-3 having the same number as the scraper 2; the bottom surface of the first upper annular block 1-1 is provided with a first annular groove 1-11, and the first upper annular block 1-1 is also provided with an upper through-groove 1-12 having the same number as the scraper 2; the first lower annular block 1-2 is detachably connected to the first upper annular block 1-1, and the first lower annular block 1-2 is also provided with a plurality of connecting blocks 1-3 having the same number as the scraper 2; The scraper 2 has an equal number of lower through-grooves 1-21, which correspond one-to-one with the upper through-grooves 1-12. Each pair of connecting blocks 1-3 is fixedly connected within the first annular groove 1-11 and located on either side of the upper through-grooves 1-12. This means that through-holes can be provided at corresponding positions of the first upper annular block 1-1, the first lower annular block 1-2, and the connecting blocks 1-3, which are then connected by fasteners to form the annular external gear 1. Each pair of connecting blocks 1-3 has a sliding groove 1-31 provided on its inner side surface. Slide blocks 21, which engage the sliding grooves 1-31, are fixedly provided on both sides of the scraper 2. In this way, by assembling the annular external gear 1, the sliding connection between all scrapers 2 and the annular external gear 1 can be easily achieved.

[0033] The mounting block 3 is used for being fixedly connected to the pellet machine and is located above the annular external gear 1 .

[0034] See also Figure 3 In one embodiment, the mounting block 3 is fixedly connected to the pellet machine, and the annular external gear 1 is rotatably connected to the pellet machine. Preferably, the annular external gear 1 is rotatably connected to the mounting block 3. In this way, the annular external gear 1 is first rotated to the mounting block 3, and then the mounting block 3 is fixedly connected to the pellet machine, which facilitates the connection between the annular scraper mechanism and the pellet machine and also facilitates subsequent maintenance and cleaning of the annular scraper mechanism.

[0035] See also Figure 3 In one embodiment, specifically, in combination with the up-and-down sliding arrangement between the scraper 2 and the annular external gear 1, the rotation arrangement between the annular external gear 1 and the mounting block 3 can be as follows: the mounting block 3 includes a second upper annular block 3-1 and a second lower annular block 3-2; the second upper annular block 3-1 is stepped, including an upper ring with a larger diameter and a lower ring with a smaller diameter, and a circle of upper limit rollers 5 is provided on the outer wall of the lower ring; the second lower annular block 3-2 is detachably connected to the second upper annular block 3-1, and a circle of lower limit rollers 6 is provided on the outer wall of the second lower annular block 3-2; the first upper annular block 1-1 and the first lower annular block 1-2 are provided with a circle of intermediate limit rollers 7. In this way, through the cooperation of the upper limit roller 5, the intermediate limit roller 7, and the lower limit roller 6, and then through the assembly of the mounting block 3, the rotational connection between the annular external gear 1 and the mounting block 3 can be easily completed.

[0036] See also Figure 1 、 Figure 4 、 Figure 5 The annular surface 1 at the bottom of the mounting block 3 (in conjunction with the aforementioned rotational arrangement between the annular external gear 1 and the mounting block 3, the annular surface 1 is the bottom surface of the upper ring) is intermittently provided with grooves 3-11 and protrusions 3-12. The annular external gear 1 is provided with a projection groove 8 corresponding to each scraper 2 (in conjunction with the aforementioned upward and downward sliding arrangement between the scraper 2 and the annular external gear 1, the projection groove 8 is composed of a corresponding upper projection groove 1-12 and a lower projection groove 1-21). The top surface of the scraper 2 is provided with a projection portion extending from the projection groove 8. Several groups of elastic members 4 are sequentially arranged between the scrapers 2 and the annular external gear 1. Each group of elastic members 4 is used to maintain the projection portion of the corresponding scraper 2 against the annular surface 1 of the mounting block 3.

[0037] See also Figure 2 and Figure 6 In one embodiment, in conjunction with the aforementioned arrangement of the scraper 2 and the annular external gear 1 sliding up and down, the elastic member 4 can preferably be a plurality of springs disposed within the chute 1-31 and positioned between the bottom inner wall of the chute 1-31 and the slider 21. That is, during assembly of the outer outer gear, the springs are first placed within the chute 1-31, followed by the scraper 2. Furthermore, latches can be provided on the inner wall of the bottom surface of the chute 1-31 and the bottom surface of the slider 21 to engage with both ends of the springs, thereby enhancing their stability.

[0038] In addition, the connecting block 1-3 can be designed to be L-shaped, and the size of the lower outlet groove 1-21 can be increased so that the vertical portion of the connecting block 1-3 can pass through the lower outlet groove 1-21. The chute 1-31 is set in the vertical portion of the connecting block 1-3, and the horizontal portion of the connecting block 1-3 remains in the first annular groove 1-11, so that the height of the chute 1-31 is not limited by the height of the first annular groove 1-11, and the chute 1-31 can be more conveniently matched with the spring. The parameters of the spring are designed to achieve the effect of "the outlet portion on the scraper 2 remains against the annular surface 1 of the mounting block 3". In this way, as the annular external gear 1 rotates, the scraper 2 cooperates with the groove portion 3-11 and the raised portion 3-12 on the annular surface 1 to slide up and down, and when scraping off the formed raw material, it has an effect similar to cutting back and forth. Compared with the existing annular scraper mechanism that directly scrapes off the formed raw material, the cross-section is smoother and less likely to produce debris.

[0039] In one embodiment, preferably, the top of each scraper 2 passing through the portion is rotatably connected to a guide wheel 9. Like this, the guide wheel 9 is provided to make the cooperation between the scraper 2 and the annular surface 1 of the mounting block 3 smoother.

Claims

1. A circular scraper mechanism for an annular film of a pellet machine, comprising an annular outer gear (1) and a plurality of scrapers (2), wherein the annular outer gear (1) is rotatably connected to the pellet machine, and is characterized in that: The invention also includes an annular mounting block (3), and a plurality of groups of elastic members (4) having the same number as the scrapers (2); the plurality of scrapers (2) are connected to the bottom of the annular external gear (1) by sliding up and down, and are arranged in a circular array around the center of the annular external gear (1); the mounting block (3) is used for being fixedly connected to the pellet machine and is located above the annular external gear (1); the annular surface of the bottom of the mounting block (3) is provided with grooves (3-11) and protrusions (3-12) at intervals; the annular external gear (1) is provided with a penetration groove (8) corresponding to the position of each scraper (2), and the top surface of the scraper (2) is extended with a penetration portion penetrating from the penetration groove (8); the plurality of groups of elastic members (4) are sequentially arranged between the plurality of scrapers (2) and the annular external gear (1), and each group of elastic members (4) is used to keep the penetration portion on the corresponding scraper (2) against the annular surface of the mounting block (3).

2. The annular scraper mechanism of the annular film of the pellet machine according to claim 1, characterized in that: The annular external gear (1) comprises a first upper annular block (1-1), a first lower annular block (1-2), and a plurality of pairs of connecting blocks (1-3) the same number as the scrapers (2); the bottom surface of the first upper annular block (1-1) is provided with a first annular groove (1-11), and the first upper annular block (1-1) is also provided with upper through-grooves (1-12) the same number as the scrapers (2); the first lower annular block (1-2) is detachably connected to the first upper annular block (1-1), and the first lower annular block (1-2) is also provided with The same number of lower outlet grooves (1-21) as the number of the scraper (2) are provided, and the lower outlet grooves (1-21) correspond to the upper outlet grooves (1-12) one by one to form the outlet groove (8); each pair of the connecting blocks (1-3) is fixedly connected in the first annular groove (1-11) and is located on both sides of the upper outlet groove (1-12); the inner side surface of each pair of the connecting blocks (1-3) is provided with a sliding groove (1-31); sliding blocks (21) that match the sliding grooves (1-31) are fixedly provided on both sides of the scraper (2).

3. The annular scraper mechanism of the annular film of the pellet machine according to claim 2, characterized in that: The annular external gear (1) is rotatably connected to the mounting block (3).

4. The annular scraper mechanism of the annular film of the pellet machine according to claim 3, characterized in that: The mounting block (3) comprises a second upper annular block (3-1) and a second lower annular block (3-2); the second upper annular block (3-1) is in a step-like shape, comprising an upper ring with a larger diameter and a lower ring with a smaller diameter, the bottom surface of the upper ring being the annular surface 1, and the outer wall of the lower ring being provided with a circle of upper limit rollers (5); the second lower annular block (3-2) is detachably connected to the second upper annular block (3-1), and the outer wall of the second lower annular block (3-2) is provided with a circle of lower limit rollers (6); the first upper annular block (1-1) and the first lower annular block (1-2) are provided with a circle of intermediate limit rollers (7).

5. The annular scraper mechanism of the annular film of the pellet machine according to claim 2, characterized in that: The elastic members (4) are a plurality of springs, which are arranged in the slide groove (1-31) and between the inner wall of the bottom of the slide groove (1-31) and the slider (21).

6. The annular scraper mechanism of the annular film of the pellet machine according to claim 5, characterized in that: The connecting block (1-3) is L-shaped, and its vertical portion passes through the lower outlet groove (1-21), and the sliding groove (1-31) is provided on the vertical portion of the connecting block (1-3).

7. The annular scraper mechanism of the annular film of the pellet machine according to claim 1, characterized in that: The top of the protruding portion of each scraper (2) is rotatably connected to a guide wheel (9).

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