A crusher for grinding biochar

Abstract

The present invention discloses a crusher for grinding biochar, the crusher has a bracket, a first motor is arranged on the bracket, the first motor is connected to the first grinding device through the first gearbox and the chain in turn, driving the first grinding device to rotate, the first grinding device is arranged with a hopper for feeding; the bracket is also arranged with a second motor, the second motor is connected to the second grinding device through the belt and the second gearbox in turn, driving the second grinding device to rotate; the discharge port of the first grinding device is connected to the feed port of the second grinding device, so as to push the material in the first grinding device into the second grinding device, the discharge port of the second grinding device is connected with an export device, and the export device is connected with a mold for forming. It has the following beneficial effects: the present invention realizes multiple grinding of biochar by arranging the first grinding device and the second grinding device, improves the grinding effect, and thus can enhance the combustion effect.

Description

Technical Field

[0001] The invention belongs to the field of crushers, and in particular relates to a crusher used for grinding biochar. Background Art

[0002] Biochar is a type of charcoal that is used as a soil conditioner. It helps plants grow and can be used for agricultural purposes as well as carbon collection and storage. It is different from traditional charcoal that is generally used as fuel. Biochar, like ordinary charcoal, is a product of thermal cracking of biomass energy raw materials. Its main component is carbon molecules. In recent years, due to the impact of climate change caused by the emission of greenhouse gases such as carbon dioxide, nitrous oxide and methane, scientists have begun to pay attention to the use of biochar because it helps to capture and remove greenhouse gases in the atmosphere through biochar sequestration, converting it into a very stable form and storing it in the soil for thousands of years.

[0003] Although biochar has many uses, its state is varied and its advantages cannot be fully utilized. For example, during combustion, the combustion of biochar in the prior art is incomplete due to lack of grinding or insufficient grinding, which not only affects the environment but also wastes resources. Summary of the invention

[0004] In view of the above technical problems, the present invention provides a crusher for biochar grinding, aiming to solve the problems in the prior art.

[0005] In order to solve the above technical problems, the technical solution of the present invention is as follows:

[0006] A crusher for grinding biochar, the crusher having a support 1, a first motor 2 being arranged on the support 1, the first motor 2 being connected to a first grinding device 5 through a first gearbox 3 and a chain 4 in sequence, the first motor 2 driving the first grinding device 5 to rotate, the first grinding device 5 being provided with a hopper 6 for feeding; a second motor 7 being arranged on the support 1, the second motor 7 being connected to a second grinding device 10 through a belt 8 and a second gearbox 9 in sequence, the second motor 7 driving the second grinding device 10 to rotate; a discharge port of the first grinding device 5 being connected to a feed port of the second grinding device 10 to push the material in the first grinding device 5 into the second grinding device 10, the discharge port of the second grinding device 10 being connected to a guide device 11, the guide device 11 being connected to a mold 12 for forming;

[0007] The first grinding device 5 has a first spiral rod 15 and a second spiral rod 16 arranged in parallel with each other, the first spiral rod 15 has a driving shaft 17 and a first spiral sheet 19, the second spiral rod 16 has a driven shaft 18 and a second spiral sheet 20, the chain 4 drives the driving shaft 17, a driving gear 13 is arranged on the driving shaft 17, and a driven gear 14 is arranged on the driven shaft 18, the driving shaft 17 drives the driven shaft 18 to rotate through the driving gear 13 and the driven gear 14, the first spiral sheet 19 is provided with a notch 28, and the second spiral sheet 20 is provided with a groove 21, and the grinding of the biochar block is achieved under the cooperation of the notch 28 and the groove 21;

[0008] The second grinding device 10 has a grinding shaft 22, and the second gearbox 9 is connected to the grinding shaft 22. A plurality of outer wall sleeves 23 are arranged on the outer side of the grinding shaft 22, and an encryption ring 24 is arranged between the outer wall sleeves 23. A mounting hole is arranged in the middle of the encryption ring 24, and the mounting hole is clearance-matched with the grinding shaft 22. Eight discharge holes are evenly arranged around the mounting hole, and a third spiral sheet 25 is arranged at a position corresponding to the outer wall sleeve 23 on the grinding shaft 22, and a strip protrusion 26 is arranged on the inner side wall of the outer wall sleeve 23 along the discharge direction.

[0009] Furthermore, a fixing piece 30 is provided on the actively stressed edge 29 of the notch 28, the cross section of the fixing piece 30 is circular, the cross section of the edge 29 is semicircular, the fixing piece 30 cooperates with the edge 29, a first mounting seat 31 and a first crushing tooth 32 fixed on the first mounting seat 31 are provided on the fixing piece 30 in a radial direction, a second mounting seat 33 and a second crushing tooth 34 are provided on both sides of the first mounting seat 31 at an angle of 60 degrees to the first mounting seat 31, circular holes 35 are provided on the edge 29 at positions corresponding to the first mounting seat 31 and the second mounting seat 33 respectively, a pit 36 ​​is also provided on the first spiral sheet 19, a through hole 37 is provided on the fixing piece 30 corresponding to the pit 36, and the fixing piece 30 is installed on the first spiral sheet 19 by means of a mounting nail 38.

[0010] Furthermore, a reinforcing rib 39 is provided on the outer side of the mounting hole.

[0011] Furthermore, the encryption ring 24 is provided with two sets of first adjustment devices for adjusting the size of the discharge hole along the radial direction of the encryption ring 24, the first adjustment device includes a first outer groove 40 arranged on the outer edge of the encryption ring 24, a first outer ring 41 is arranged in the first outer groove 40, a first inner groove 42 is arranged on the inner side of the first outer groove 40, a first inner ring 43 is arranged in the first inner groove 42, the first outer groove 40 and the first inner groove 42 are connected through a first channel 44, an outer slider 45 and an inner slider 46 are arranged in the first channel 44, and the outer slider 45 and the inner slider 46 are respectively provided with a first slide groove 47 and A second slide groove 48, a first connecting rod 49 is fixed on the first outer ring 41, and the end of the first connecting rod 49 is slidably set in the first slide groove 47, and a second connecting rod 50 is fixed on the first inner ring 43, and the end of the second connecting rod 50 is slidably set in the second slide groove 48; a second channel 51 is also provided on the encryption ring 24, and a third connecting rod 52 is provided in the second channel 51, and the third connecting rod 52 connects the first outer ring 41 and the first inner ring 43 to realize the linkage of the first outer ring 41 and the first inner ring 43, and a first push rod 53 for promoting rotation is provided on the outer side of the first outer ring 41.

[0012] Furthermore, the encryption ring 24 is provided with a group of second adjustment devices for adjusting the size of the discharge hole in the radial direction perpendicular to the encryption ring 24, the second adjustment device includes a second outer groove 54 arranged on the outer edge of the encryption ring 24, a second outer ring 55 is arranged in the second outer groove 54, a third channel 56 is also arranged on the inner side of the second outer groove 54, and a fourth channel 57 is opened on both sides of the third channel 56, a left slider 58 and a right slider 59 are arranged inside the third channel 56, and the left slider 58 and the right slider 59 are both provided with a third slide groove 60, a fourth connecting rod 61 is slidably arranged in the third slide groove 60, a fixed block 62 is provided on the second outer ring 55, a fourth slide groove 63 is provided on the fixed block 62, a fifth connecting rod 64 is slidably arranged in the fourth slide groove 63, the fourth connecting rod 61 is fixedly connected to the fifth connecting rod 64, and a second push rod 65 for promoting rotation is arranged on the outer side of the second outer ring 55.

[0013] Furthermore, the guide-out device 11 is conical, and a conical screw 27 is arranged inside the guide-out device 11 .

[0014] Furthermore, the first channel 44 and the third channel 56 pass through the discharge hole.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention realizes multiple grinding of biochar (grinded multiple times in the first grinding device or the second grinding device) by providing the first grinding device and the second grinding device (and the specific structure), further improving the grinding effect, and can fully grind biochar with different shapes and densities, so that the biochar formed in the final mold has a relatively small density, thereby enhancing the combustion effect, fully burning, and protecting the environment.

[0017] 2. The present invention further designs the double-twisted spiral device, that is, a notch is set on the first spiral plate, a groove is set on the second spiral plate, and different structural improvements are made to the two parallel spiral plates, so that different grinding and stirring of biochar are achieved during the movement, and the biochar can be further ground to make the particles smaller, the density after molding is small, and the combustion is more complete.

[0018] 3. The present invention provides multiple sections of spiral blades and encryption rings in the second grinding device. Through the grinding and extrusion of the spiral blades, the biochar needs to pass through the discharge hole on the encryption ring before it can be discharged, and the fineness of the biochar grinding is further improved through the discharge hole.

[0019] 4. In order to strengthen the strength of the actively stressed edge at the notch, the present invention is provided with a crushing device (a combination of a fixing part, a mounting seat and crushing teeth) at the notch, which can achieve better crushing of larger biochar blocks, protect the notch, and improve the grinding ability of the notch on the biochar after the biochar enters between the spiral sheets; the angle between the crushing teeth is set to 60 degrees, which can give full play to the grinding and crushing ability of each crushing tooth. When the angle decreases, the crushing ability increases and the grinding ability decreases. When the angle increases, the crushing ability decreases and the grinding ability increases. In order to make both the grinding ability and the crushing ability in a superior state, setting the angle to 60 degrees is the best effect; the circular hole can disperse the local stress concentration and further protect the edge of the notch.

[0020] 5. By setting the first adjusting device and the second adjusting device, the size of the discharge hole on the encryption ring can be adjusted, which can be suitable for production requirements of different particle sizes. The encryption ring of the present invention is a precision device and can be assembled by stacking multiple layers. Since the size of the discharge hole of the present invention is adjustable, the device of the present invention does not need to replace the encryption ring to meet the production requirements of different particle sizes, and can achieve continuous and uninterrupted production.

[0021] 6. The first adjusting device of the present invention is provided with two groups, and is arranged on both sides of the second adjusting device. When the first adjusting device and the second adjusting device are extended, the first adjusting device and the second adjusting device form a mutual abutment to enhance the strength of the discharge hole, and at the same time, the size of the biochar particles discharged from the discharge hole is stable.

[0022] 7. The first adjustment device and the second adjustment device on the encryption ring of the present invention adopt a purely mechanical structure. Compared with the electric mechanism used to adjust the size of the discharge hole, the driving transmission components can be reduced, and the electric mechanism will increase the controller and linkage components. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A perspective view of a crusher of the present invention;

[0024] Figure 2 A front view of the crusher of the present invention;

[0025] Figure 3 A top view of the crusher of the present invention;

[0026] Figure 4 The present invention Figure 2 Middle AA view;

[0027] Figure 5 Schematic diagram of the notch of the present invention;

[0028] Figure 6 The present invention Figure 5 Enlarged view of part A in the middle;

[0029] Figure 7 A side view of the encryption ring of the present invention;

[0030] Figure 8 The present invention Figure 7 Partial views in BB and DD directions;

[0031] Fig. 9 The present invention Figure 7 The CC-direction local view in the figure;

[0032] In the figure, bracket 1, first motor 2, first gearbox 3, chain 4, first grinding device 5, hopper 6, second motor 7, belt 8, second gearbox 9, second grinding device 10, derivation device 11, mold 12, driving gear 13, driven gear 14, first spiral rod 15, second spiral rod 16, driving shaft 17, driven shaft 18, first spiral piece 19, second spiral piece 20, groove 21, grinding shaft 22, outer wall sleeve 23, encryption ring 24, third spiral piece 25, strip protrusion 26, conical screw 27, notch 28, edge 29, fixing piece 30, first mounting seat 31, first crushing tooth 32, second mounting seat 3 3. second crushing tooth 34, circular hole 35, pit 36, through hole 37, mounting nail 38, reinforcing rib 39, first outer groove 40, first outer ring 41, first inner groove 42, first inner ring 43, first channel 44, outer slider 45, inner slider 46, first slide groove 47, second slide groove 48, first connecting rod 49, second connecting rod 50, second channel 51, third connecting rod 52, first push rod 53, second outer groove 54, second outer ring 55, third channel 56, fourth channel 57, left slider 58, right slider 59, third slide groove 60, fourth connecting rod 61, fixing block 62, fourth slide groove 63, fifth connecting rod 64, second push rod 65. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0034] In the description of the present invention, it is to be understood that the terms “center”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “axial”, “circumferential”, etc., indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] In the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0037] like Figure 1 The figure shows a stereoscopic view of a crusher for biochar grinding of the present invention. The crusher of the present invention has a bracket 1, which is a fixed component of the entire device. The bracket 1 is provided with a first motor 2. The first motor 2 is connected to a first grinding device 5 through a first gearbox 3 and a chain 4 in sequence to drive the first grinding device 5 to rotate. The first grinding device 5 is provided with a hopper 6 for feeding. Figure 2 As shown, since the first grinding device 5 needs to crush and grind larger or harder biochar blocks, the first grinding device 5 is driven by the gear on the first gearbox 3-chain-gear on the first grinding device 5. The bracket 1 is also provided with a second motor 7, which is connected to the second grinding device 10 through a belt 8 and a second gearbox 9 in turn to drive the second grinding device 10 to rotate; the discharge port of the first grinding device 5 is connected to the feed port of the second grinding device 10 to push the material in the first grinding device 5 into the second grinding device 10, and the discharge port of the second grinding device 10 is connected to a guide device 11, which is connected to a mold 12 for forming. The guide device 11 of the present invention is conical, and a conical screw 27 is arranged inside it. The present invention uses the mold 12 to shape biochar in two cases. In the first case, when there are multiple molds 12 (the mold 12 is in the shape of a cylindrical can), the biochar is formed in the mold 12. When the lead-out device 11 presses the ground biochar into the mold 12, the tip of the conical screw 27 generates a pit on the formed biochar, which can enhance the combustion effect of the biochar and make the combustion more thorough. In the second case, the mold 12 is cylindrical and fixedly connected to the lead-out device 11. The biochar finally led out is in the shape of a column, that is, a multi-segment biochar column. The present invention realizes multiple grinding of biochar by setting the first grinding device and the second grinding device (and the specific structure), further improves the grinding effect, can fully grind biochar with different shapes and different densities, so that the biochar formed in the final mold has a relatively small density, thereby enhancing the combustion effect, fully burning, and protecting the environment.

[0038] like Figure 3 , 4As shown, the first grinding device 5 has a first screw rod 15 and a second screw rod 16 arranged in parallel with each other, the first screw rod 15 has a driving shaft 17 and a first spiral plate 19, the second screw rod 16 has a driven shaft 18 and a second spiral plate 20, the chain 4 drives the driving shaft 17, a driving gear 13 is arranged on the driving shaft 17, and a driven gear 14 is arranged on the driven shaft 18, and the driving shaft 17 drives the driven shaft 18 to rotate through the driving gear 13 and the driven gear 14. Figure 5 As shown, the first spiral sheet 19 is provided with a notch 28; Figure 3 As shown, the second spiral sheet 20 is provided with a groove 21, and the biochar block is ground under the cooperation of the notch 28 and the groove 21. By further designing the double-twisted spiral device, that is, providing a notch on the first spiral sheet and a groove on the second spiral sheet, different structural improvements are made to the two parallel spiral sheets, and different grinding and stirring of the biochar are achieved during the movement, and the biochar can be further ground to make the particles smaller, the density after molding is small, and the combustion is more complete.

[0039] like Figure 4 As shown, the second grinding device 10 has a grinding shaft 22, the second gearbox 9 is connected to the grinding shaft 22, the outer side of the grinding shaft 22 is provided with multiple sections of outer wall sleeves 23, an encryption ring 24 is provided between the outer wall sleeves 23, a mounting hole is provided in the middle of the encryption ring 24, the mounting hole is clearance-matched with the grinding shaft 22, 8 discharge holes are evenly arranged around the mounting hole, a third spiral sheet 25 is provided at a position corresponding to the outer wall sleeve 23 on the grinding shaft 22, and a strip-shaped protrusion 26 is provided on the inner side wall of the outer wall sleeve 23 along the discharge direction. Multiple sections of spiral sheets and encryption rings are provided in the second grinding device, and through the grinding and extrusion of the spiral sheets, the biochar needs to pass through the discharge hole on the encryption ring before it can be discharged, and the fineness of the biochar grinding is further improved through the discharge hole.

[0040] like Figure 6As shown, a fixing piece 30 is arranged on the actively stressed edge 29 of the notch 28, the cross section of the fixing piece 30 is circular, the cross section of the edge 29 is semicircular, the fixing piece 30 cooperates with the edge 29, a first mounting seat 31 and a first crushing tooth 32 fixed on the first mounting seat 31 are arranged on the fixing piece 30 in a radial direction, a second mounting seat 33 and a second crushing tooth 34 are arranged on both sides of the first mounting seat 31 at an angle of 60 degrees to the first mounting seat 31, circular holes 35 are opened on the edge 29 at positions corresponding to the first mounting seat 31 and the second mounting seat 33 respectively, a pit 36 ​​is also opened on the first spiral sheet 19, a through hole 37 is arranged on the fixing piece 30 corresponding to the pit, and the fixing piece 30 is installed on the first spiral sheet 19 by means of a mounting nail 38. In order to strengthen the strength of the active force-bearing edge at the notch, the present invention is provided with a crushing device (a combination of a fixing, a mounting seat and crushing teeth) at the notch, which can achieve better crushing of larger biochar blocks, protect the notch, and also improve the grinding ability of the notch on the biochar after the biochar enters between the spiral sheets. The angle between the crushing teeth is set to 60 degrees, which can fully exert the grinding and crushing ability of each crushing tooth. When the angle decreases, the crushing ability increases and the grinding ability decreases. When the angle increases, the crushing ability decreases and the grinding ability increases. In order to make both the grinding ability and the crushing ability in a superior state, setting the angle to 60 degrees is the best effect.

[0041] In order to strengthen the mounting holes, Figure 7 As shown, a reinforcing rib 39 is provided on the outer side of the mounting hole.

[0042] like Figure 8As shown, the encryption ring 24 is provided with two sets of first adjustment devices for adjusting the size of the discharge hole along the radial direction of the encryption ring 24, the first adjustment device includes a first outer groove 40 arranged on the outer edge of the encryption ring 24, a first outer ring 41 is arranged in the first outer groove 40, a first inner groove 42 is arranged on the inner side of the first outer groove 40, a first inner ring 43 is arranged in the first inner groove 42, the first outer groove 40 and the first inner groove 42 are connected through a first channel 44, an outer slider 45 and an inner slider 46 are arranged in the first channel 44, and the outer slider 45 and the inner slider 46 are respectively provided with a first slide groove 47 and The first outer ring 41 is fixed with a first connecting rod 49, the end of which is slidably arranged in the first sliding groove 47, and the first inner ring 43 is fixed with a second connecting rod 50, the end of which is slidably arranged in the second sliding groove 48; the encryption ring 24 is also provided with a second channel 51, and a third connecting rod 52 is arranged in the second channel 51, and the third connecting rod 52 connects the first outer ring 41 and the first inner ring 43 to realize the linkage of the first outer ring 41 and the first inner ring 43, and the outer side of the first outer ring 41 is provided with a first push rod 53 for promoting rotation. Fig. 9 As shown, the encryption ring 24 is provided with a group of second adjustment devices for adjusting the size of the discharge hole along the radial direction perpendicular to the encryption ring 24, the second adjustment device includes a second outer groove 54 arranged on the outer edge of the encryption ring 24, a second outer ring 55 is arranged in the second outer groove 54, a third channel 56 is also arranged on the inner side of the second outer groove 54, and a fourth channel 57 is opened on both sides of the third channel 56, a left slider 58 and a right slider 59 are arranged inside the third channel 56, and the left slider 58 and the right slider 59 are both provided with a third slide groove 60, a fourth connecting rod 61 is slidably arranged in the third slide groove 60, a fixed block 62 is provided on the second outer ring 55, a fourth slide groove 63 is provided on the fixed block 62, a fifth connecting rod 64 is slidably arranged in the fourth slide groove 63, the fourth connecting rod 61 is fixedly connected to the fifth connecting rod 64, and a second push rod 65 for promoting rotation is arranged on the outer side of the second outer ring 55. By setting the first adjustment device and the second adjustment device, the size of the discharge hole on the encryption ring can be adjusted, which can be suitable for production requirements of different particle sizes. The encryption ring of the present invention is a precision device and can be assembled by stacking multiple layers. Since the size of the discharge hole of the present invention is adjustable, the device of the present invention does not need to replace the encryption ring for production requirements of different particle sizes, and can achieve continuous and uninterrupted production. The first adjustment device of the present invention is provided with two groups, and is arranged on both sides of the second adjustment device. When the first adjustment device and the second adjustment device are extended, the first adjustment device and the second adjustment device form a mutual abutment to enhance the strength of the discharge hole, and at the same time, the size of the biochar particles discharged from the discharge hole is stable.

[0043] More importantly, the first adjusting device and the second adjusting device on the encryption ring of the present invention adopt a purely mechanical structure. During the scheme demonstration stage, the pure mechanical structure and the electric mechanism structure were compared. Compared with the electric mechanism for adjusting the size of the discharge hole, the pure mechanical structure can reduce the driving transmission components. If the electric mechanism is used, more controllers and linkage components will be added.

[0044] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A crusher for grinding biochar, the crusher comprising a support (1), characterized in that: The support (1) is provided with a first motor (2), the first motor (2) is connected to the first grinding device (5) through a first gearbox (3) and a chain (4) in sequence, the first motor (2) drives the first grinding device (5) to rotate, and the first grinding device (5) is provided with a hopper (6) for feeding materials; the support (1) is provided with a second motor (7), the second motor (7) is connected to the second grinding device (10) through a belt (8) and a second gearbox (9) in sequence, and the second motor (7) drives the second grinding device (10) to rotate; the discharge port of the first grinding device (5) is connected to the feed port of the second grinding device (10) so as to push the material in the first grinding device (5) into the second grinding device (10), the discharge port of the second grinding device (10) is connected to a guide device (11), and the guide device (11) is connected to a mold (12) for forming; The first grinding device (5) comprises a first screw rod (15) and a second screw rod (16) which are arranged parallel to each other, the first screw rod (15) comprising a driving shaft (17) and a first spiral plate (19), the second screw rod (16) comprising a driven shaft (18) and a second spiral plate (20), the chain (4) drives the driving shaft (17), a driving gear (13) is arranged on the driving shaft (17), a driven gear (14) is arranged on the driven shaft (18), the driving shaft (17) drives the driven shaft (18) to rotate via the driving gear (13) and the driven gear (14), the first spiral plate (19) is provided with a notch (28), the second spiral plate (20) is provided with a groove (21), and the biochar block is ground by the cooperation of the notch (28) and the groove (21); The second grinding device (10) comprises a grinding shaft (22), the second gearbox (9) being connected to the grinding shaft (22), a plurality of sections of outer wall sleeves (23) being arranged on the outer side of the grinding shaft (22), an encryption ring (24) being arranged between the outer wall sleeves (23), a mounting hole being arranged in the middle of the encryption ring (24), the mounting hole being clearance-matched with the grinding shaft (22), eight discharge holes being evenly arranged around the mounting hole, a third spiral sheet (25) being arranged at a position on the grinding shaft (22) corresponding to the outer wall sleeve (23), and a strip-shaped protrusion (26) being arranged on the inner side wall of the outer wall sleeve (23) along the discharge direction.

2. A crusher for biochar grinding according to claim 1, characterized in that: A fixing member (30) is arranged on the actively force-bearing edge (29) of the notch (28); the fixing member (30) has a circular cross section, and the edge (29) has a semicircular cross section; the fixing member (30) cooperates with the edge (29); a first mounting seat (31) and a first crushing tooth (32) fixed to the first mounting seat (31) are arranged on the fixing member (30) in a radial direction; a second mounting seat (33) and a second crushing tooth (34) are arranged on both sides of the first mounting seat (31) at an angle of 60 degrees to the first mounting seat (31); circular holes (35) are provided on the edge (29) at positions corresponding to the first mounting seat (31) and the second mounting seat (33), respectively; a concave pit (36) is further provided on the first spiral sheet (19); a through hole (37) is provided on the fixing member (30) corresponding to the concave pit (36); and the fixing member (30) is mounted on the first spiral sheet (19) by means of mounting pins (38).

3. A crusher for biochar grinding according to claim 2, characterized in that: A reinforcing rib (39) is provided on the outer side of the mounting hole.

4. A crusher for biochar grinding according to claim 3, characterized in that: The encryption ring (24) is provided with two sets of first adjustment devices for adjusting the size of the discharge hole along the radial direction of the encryption ring (24), the first adjustment device comprising a first outer groove (40) arranged on the outer edge of the encryption ring (24), a first outer ring (41) arranged in the first outer groove (40), a first inner groove (42) arranged on the inner side of the first outer groove (40), a first inner ring (43) arranged in the first inner groove (42), the first outer groove (40) and the first inner groove (42) being connected through a first channel (44), an outer sliding block (45) and an inner sliding block (46) being arranged in the first channel (44), and a first sliding groove (47) and a second sliding groove (48) being arranged on the outer sliding block (45) and the inner sliding block (46), respectively. A first connecting rod (49) is fixed on the first outer ring (41), and the end of the first connecting rod (49) is slidably arranged in the first sliding groove (47); a second connecting rod (50) is fixed on the first inner ring (43), and the end of the second connecting rod (50) is slidably arranged in the second sliding groove (48); a second channel (51) is also provided on the encryption ring (24), and a third connecting rod (52) is provided in the second channel (51), and the third connecting rod (52) connects the first outer ring (41) and the first inner ring (43) to realize the linkage of the first outer ring (41) and the first inner ring (43); a first push rod (53) for promoting rotation is provided on the outer side of the first outer ring (41).

5. A crusher for biochar grinding according to claim 4, characterized in that: The encryption ring (24) is provided with a second adjustment device for adjusting the size of the discharge hole in a radial direction perpendicular to the encryption ring (24), the second adjustment device comprising a second outer groove (54) arranged on the outer edge of the encryption ring (24), a second outer ring (55) arranged in the second outer groove (54), a third channel (56) arranged on the inner side of the second outer groove (54), fourth channels (57) opened on both sides of the third channel (56), and a left slider (58) and a right slider (59) arranged inside the third channel (56). ), the left slider (58) and the right slider (59) are both provided with a third slide groove (60), a fourth connecting rod (61) is slidably provided in the third slide groove (60), a fixing block (62) is provided on the second outer ring (55), a fourth slide groove (63) is provided on the fixing block (62), a fifth connecting rod (64) is slidably provided in the fourth slide groove (63), the fourth connecting rod (61) is fixedly connected to the fifth connecting rod (64), and a second push rod (65) for driving the rotation is provided on the outer side of the second outer ring (55).

6. A crusher for biochar grinding according to claim 5, characterized in that: The outlet device (11) is conical, and a conical screw (27) is arranged inside the outlet device (11).

7. A crusher for biochar grinding according to claim 6, characterized in that: The first channel (44) and the third channel (56) pass through the discharge hole.

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