A bamboo material grinding device

Abstract

The invention discloses a bamboo material grinding device, which relates to the field of grinding devices, including a casing and an analyzer arranged above the casing, wherein the inner wall of the casing is provided with a grinding ring, and a plurality of grinding rollers are annularly distributed around the inner wall of the grinding ring, and a top pressing component is arranged inside the casing, the grinding roller is supported by the top pressing component, and a shaft sleeve is rotatably arranged at the bottom of the casing, the top pressing component is torsionally limited and axially slidably connected with the shaft sleeve, so that the top pressing component can move axially relative to the shaft sleeve while following the rotation of the shaft sleeve, and the shaft sleeve is connected with a driving component, and the driving component is used to drive the shaft sleeve and the top pressing component to rotate. In the process of driving the grinding roller to roll and crush the bamboo material along the grinding ring, the top pressing component is intermittently lifted upward by an eccentric column, and the elastic force of a spring is cooperated to make the top pressing component drive the grinding roller to do intermittent lifting and lowering motion, and the grinding roller can perform an up and down material crushing action while rolling the bamboo material, thereby increasing the damage to the bamboo material fiber, reducing the adhesion degree of the bamboo material, and improving the powder making efficiency.

Description

Technical Field

[0001] The invention relates to the field of grinding equipment, in particular to a bamboo material grinding equipment. Background Art

[0002] The use of bamboo materials to make paperboard requires the bamboo materials to be powdered. The bamboo materials are processed into small particles by crushing equipment, and then finely ground into bamboo powder by grinding equipment. There are many kinds of grinding equipment used for bamboo material powdering. Raymond mill can be used to implement fine powdering of bamboo materials; Raymond mill is generally used to grind stone. Raymond mill crushes stone into powder by rolling. Bamboo and stone have structural differences. Bamboo has a fiber structure that makes it less brittle and more tough. The bamboo is prone to sticking together during the rolling process. The efficiency of crushing and grinding bamboo only by rolling is not high, and the humidity of the bamboo needs to be kept at an extremely low level. Summary of the invention

[0003] In order to make up for the shortcomings of the prior art, the purpose of the present invention is to provide a bamboo material grinding device to solve the problem that the traditional Raymond mill only uses a rolling method to grind bamboo materials with low efficiency.

[0004] In order to solve the problems of the prior art, the technical solution of the present invention is as follows: A bamboo material grinding device comprises a casing and an analyzer arranged above the casing, the inner wall of the casing is provided with a grinding ring, and a plurality of grinding rollers are distributed in an annular manner around the inner wall of the grinding ring, the casing is provided with a top pressing assembly inside, the grinding roller is supported by the top pressing assembly, a shaft sleeve is rotatably arranged at the bottom of the casing, the top pressing assembly is torsionally limited and axially slidably connected to the shaft sleeve, so that the top pressing assembly can move axially relative to the shaft sleeve while following the rotation of the shaft sleeve, the shaft sleeve is connected with a driving assembly, the driving assembly is used to drive the shaft sleeve and the top pressing assembly to rotate, so that the grinding roller can roll the bamboo material around the grinding ring, and a lifting assembly is arranged at the bottom of the top pressing assembly, the lifting assembly is used to drive the top pressing assembly to perform lifting movement, so that the grinding roller can perform an up and down material crushing action while rolling the bamboo material.

[0005] Preferably, the driving assembly comprises a motor, the output shaft of the motor is fixed with a transmission shaft, and the transmission shaft is transmission-connected to the shaft sleeve via a bevel gear set.

[0006] Preferably, the lifting assembly includes a shaft rod, a driven gear is fixed to the shaft rod, a driving gear is fixed to the transmission shaft, the driving gear is meshed and connected to the driven gear, a spring is connected between the pressing assembly and the sleeve to apply a downward elastic force to the pressing assembly, and the shaft rod is connected to an eccentric column, which can intermittently lift the pressing assembly upward.

[0007] Preferably, the cross-section of the eccentric column is elliptical, the minimum diameter of the cross-section of the eccentric column remains unchanged, and the maximum diameter of the cross-section of the eccentric column gradually changes along the axial direction of the eccentric column. The surface of the shaft rod has an axial groove, and the eccentric column is guided by the axial groove and can move axially along the shaft rod, which is used to adjust the eccentric column to contact the top pressure assembly at different positions. The surface of the shaft rod is threadedly connected with a nut for positioning the eccentric column.

[0008] Preferably, the small diameter end of the eccentric column has a cylindrical portion, and the height of the pressing assembly does not change when it contacts the cylindrical portion.

[0009] Preferably, the jacking assembly includes a center disk with an air cavity inside. A plurality of openings penetrating the air cavity are provided around the center disk. A plug arm is elastically slid in each opening via a spring. The grinding roller is rotatably mounted on the outer end of the plug arm. Gas introduced into the air cavity generates pressure on the plug arm so that the grinding roller can squeeze and contact the grinding ring. A shaft column is fixed to the bottom of the center disk. The shaft column passes through the shaft sleeve and contacts the jacking assembly. The shaft column and the shaft sleeve are rotationally limited by matching sliding keys and keyways.

[0010] Preferably, the bottom end of the shaft column is rotatably connected to an end shaft, and a ball is rollingly arranged at the bottom end of the end shaft, and the ball is in contact with the jacking assembly.

[0011] Preferably, an air passage is provided through the shaft column and the end shaft, the air passage is connected to the air cavity, and an air valve and an air pressure sensor connected to the air passage are provided on the surface of the end shaft.

[0012] Preferably, a plurality of scrapers are fixed around the shaft sleeve and arranged obliquely, the bottom of the scrapers contacts the bottom of the housing, and the top of the scrapers points to the contact position between the grinding roller and the grinding ring.

[0013] Preferably, a feed port is arranged on the outside of the casing, an air inlet is arranged tangentially on the bottom of the casing, and guide plates are distributed in an annular manner on the inner bottom end of the casing, and the guide plates are inclined to point in the rotation direction of the sleeve.

[0014] Compared with the prior art, the advantages of the present invention are as follows: 1. In the process of driving the grinding roller to roll and crush the bamboo material along the grinding ring, the eccentric column intermittently pushes up the top pressure component, and the elastic force of the spring is used to make the top pressure component drive the grinding roller to do intermittent lifting and lowering movements. The grinding roller can perform up and down material crushing actions while rolling the bamboo material, thereby increasing the damage to the bamboo material fiber, reducing the adhesion of the bamboo material, and improving the milling efficiency.

[0015] 2. The cross section of the eccentric column of the present invention is elliptical, the minimum diameter of the cross section of the eccentric column remains unchanged, and the maximum diameter of the cross section of the eccentric column gradually changes along the axial direction of the eccentric column. By axially moving the position of the eccentric column, the position of the eccentric column with different eccentric diameters can be adjusted to conflict with the top pressure component, so that the height of the top pressure component being lifted up changes, thereby realizing the adjustment of the grinding roller's crushing amplitude, which is convenient for adjusting and using bamboo materials with different humidity and particle sizes.

[0016] 3. The present invention uses air pressure to apply pressure to the grinding roller to crush the material, which is convenient for quickly adjusting the pressure according to different processing conditions. The overall structure of the top pressure component is relatively concealed, reducing the impact of dust on internal equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is one of the overall external structure schematic diagrams of the present invention.

[0018] Figure 2 This is the second schematic diagram of the overall external structure of the present invention.

[0019] Figure 3 It is a schematic diagram of the grinding roller distribution structure of the present invention.

[0020] Figure 4 It is a schematic diagram of the internal structure of the casing of the present invention.

[0021] Figure 5 It is a schematic diagram of the structure of the top pressing assembly of the present invention.

[0022] Figure 6 It is a schematic diagram of the adaption structure of the top pressure assembly and the shaft sleeve of the present invention.

[0023] Figure 7 It is a schematic diagram of the scraper distribution structure of the present invention.

[0024] Figure 8 It is a schematic diagram of the structure of the driving component of the present invention.

[0025] Fig. 9 It is a schematic diagram of the eccentric column structure of the present invention.

[0026] Figure numerals: 1. casing; 11. feed port; 12. air inlet; 13. analyzer; 14. guide plate; 2. top pressure assembly; 21. center disk; 22. plug arm; 23. air cavity; 24. through port; 25. shaft column; 26. baffle; 27. sliding key; 3. grinding roller; 4. grinding ring; 5. motor; 51. transmission shaft; 52. driving gear; 53. driven gear; 6. scraper; 7. bushing; 71. keyway; 8. lifting assembly; 81. eccentric column; 82. cylindrical part; 83. shaft rod; 84. axial groove; 9. end shaft; 91. air valve; 92. air pressure sensor; 93. ball. DETAILED DESCRIPTION

[0027] 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.

[0028] like Figure 1-5 As shown, the bamboo material grinding device comprises a casing 1, a feed port 11 is arranged on the side of the casing 1, an air inlet 12 which is tangentially through is arranged on the side of the bottom of the casing 1, the air inlet 12 is connected to an external fan, a plurality of guide plates 14 are distributed in an annular manner at the bottom end of the casing 1, the guide plates 14 are arranged obliquely, so that the wind energy introduced by the fan forms a rotating airflow through the guidance of the guide plates 14, and is used to conduct the powder upward in a rotating manner, and an analyzer 13 is arranged above the casing 1, and the bamboo powder is screened and discharged by the analyzer 13; like Figure 3-6 As shown, the shaft sleeve 7 rotates and passes through the bottom of the casing 1, and the top pressure component 2 is arranged above the shaft sleeve 7. The top pressure component 2 includes a center disk 21. The top surface and the bottom of the center disk 21 are both conical. The center disk 21 has an air cavity 23. A plurality of through holes 24 penetrating the air cavity 23 are arranged around the center disk 21. A plug arm 22 is elastically slidably installed in each through hole 24 through spring adaptation. A grinding roller 3 is rotatably installed at the outer end of each plug arm 22. A shaft column 25 is fixed at the bottom of the center disk 21. The shaft column 25 passes through the shaft sleeve 7 downward, and the bottom of the shaft column 25 is lower than the bottom of the shaft sleeve 7. A keyway 71 is arranged on the inner wall of the shaft sleeve 7. A sliding key 27 is fixed on the outer wall of the shaft column 25. The sliding adaptation of the sliding key 27 and the keyway 71 allows the shaft column 25 and the shaft sleeve 7 to be torsionally limited, and the shaft column 25 can move vertically relative to the shaft sleeve 7. A spring is connected between the shaft column 25 and the shaft sleeve 7, and the spring generates a downward elastic force on the shaft column 25. like Figure 5 , 7 As shown, a grinding ring 4 is fixedly installed at the height of the inner wall of the casing 1 in alignment with the grinding roller 3, and high-pressure gas is introduced into the air cavity 23. The gas pressure acts on the inner end of the plug arm 22 to generate an outward thrust on the grinding roller 3, so that the grinding roller 3 can squeeze and contact the grinding ring 4. A plurality of inclined scrapers 6 are fixed around the shaft sleeve 7, and the bottom of the scraper 6 contacts the bottom of the casing 1, and the top of the scraper 6 points to the contact position between the grinding roller 3 and the grinding ring 4. like Figure 8As shown, the driving assembly includes a motor 5, which is installed at the bottom of the casing 1. The output shaft of the motor 5 is fixed to the transmission shaft 51. The transmission shaft 51 is connected to the shaft sleeve 7 through a matching bevel gear set. The lifting assembly 8 is arranged below the jacking assembly 2. The lifting assembly 8 includes a shaft 83, which is rotatably installed on the bottom surface of the casing 1. One end of the shaft 83 is fixed to the driven gear 53, and the driving gear 52 is fixed to the outside of the transmission shaft 51. The driving gear 52 is meshed with the driven gear 53. The surface of the shaft 83 is connected and installed with an eccentric column 81, and the eccentric column 81 upwardly resists the bottom end of the shaft column 25. The broken bamboo material is put into the casing 1 through the feed inlet 11, and the motor 5 is turned on to drive the shaft sleeve 7 to rotate through the transmission shaft 51. The top pressure component 2 is rotated synchronously with the shaft sleeve 7 as a whole through the adapted sliding key 27 and keyway 71. The high pressure in the air cavity 23 applies a stable pressure to the grinding roller 3, so that the grinding roller 3 squeezes and rolls around the grinding ring 4 to crush the bamboo material. The scraper 6 rotates with the shaft sleeve 7, and the scraper 6 scoops up the bamboo material at the bottom of the casing 1 and guides it to the grinding roller 3, so that the grinding roller 3 and the grinding ring 4 continuously crush the bamboo material. The shaft rod 83 drives the eccentric column 81 to rotate through the transmission of the driving gear 52 and the driven gear 53. The eccentric column 81 intermittently pushes the top pressure component 2 upward, and the elastic force of the spring is used to make the top pressure component 2 drive the grinding roller 3 to do intermittent lifting and lowering movements. The grinding roller 3 can perform an up and down material crushing action while rolling the bamboo material, thereby increasing the damage to the bamboo material fiber and improving the powder making efficiency. The vortex airflow at the bottom of the casing 1 conducts the powder upward to the analyzer 13 for screening and then discharges it.

[0029] The transmission ratio of the driving gear 52 to the driven gear 53 is greater than 5, so that the lifting action of the grinding roller 3 is slower than the rolling action, and the grinding roller 3 can crush the material more stably.

[0030] A blocking cover 26 is fixed at the bottom of the center disk 21 . The blocking cover 26 is used to be sleeved on the top of the shaft sleeve 7 to prevent dust from entering the sliding gap between the shaft column 25 and the shaft sleeve 7 .

[0031] like Fig. 9 As shown, the cross section of the eccentric column 81 is elliptical, the minimum cross section diameter of the eccentric column 81 remains unchanged, and the maximum cross section diameter of the eccentric column 81 gradually changes along the axial direction of the eccentric column 81. The surface of the shaft 83 has an axial groove 84, and the eccentric column 81 and the axial groove 84 are slidably arranged, so that the eccentric column 81 can be guided by the axial groove 84 and can move axially along the shaft 83. The surface of the shaft 83 has an external thread, and a nut is connected to the external thread of the shaft 83, and the nut is used to limit the position of the eccentric column 81 by abutting against the two ends of the eccentric column 81; By loosening the nut and axially moving the position of the eccentric column 81, the eccentric diameter position of the eccentric column 81 is adjusted to contact the top pressure component 2, so that the height of the top pressure component 2 is changed, and the crushing amplitude of the grinding roller 3 is adjusted, which is convenient for adjusting and using bamboo materials with different humidity and particle size.

[0032] like Fig. 9 As shown, the small diameter end of the eccentric column 81 has a cylindrical portion 82. When the cylindrical portion 82 is adjusted to contact the top pressure assembly 2, the height of the top pressure assembly 2 does not change, and the grinding roller 3 does not perform a material crushing action, so that the equipment can switch to a mode of pure rolling and crushing materials.

[0033] like Figure 5 , 8 As shown, the end shaft 9 is rotatably installed at the bottom end of the shaft column 25, and a ball 93 is rollingly arranged at the bottom end of the end shaft 9. The ball 93 contacts the eccentric column 81 to reduce the contact friction.

[0034] like Figure 5 As shown, an air passage is provided inside the shaft column 25 and the end shaft 9, and the air passage is connected to the air cavity 23. An air valve 91 and an air pressure sensor 92 connected to the air passage are provided on the surface of the end shaft 9. The air pressure in the air cavity 23 is monitored by the air pressure sensor 92 to provide feedback on the force with which the grinding roller 3 rolls the material. The air cavity 23 can be inflated and deflated through the air valve 91 to adjust the force with which the grinding roller 3 rolls the material.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bamboo material grinding device, comprising a housing (1) and an analyzer (13) arranged above the housing (1), the housing (1) having a grinding ring (4) on the inner wall, and a plurality of grinding rollers (3) distributed in an annular manner around the inner wall of the grinding ring (4), characterized in that: The casing (1) has a pressing assembly (2) inside, the grinding roller (3) is supported by the pressing assembly (2), a shaft sleeve (7) is rotatably provided at the bottom of the casing (1), the pressing assembly (2) and the shaft sleeve (7) are torsionally limited and axially slidably connected, so that the pressing assembly (2) can move axially relative to the shaft sleeve (7) while following the rotation of the shaft sleeve (7), the shaft sleeve (7) is connected to a driving assembly, the driving assembly is used to drive the shaft sleeve (7) and the pressing assembly (2) to rotate, so that the grinding roller (3) can roll the bamboo material around the grinding ring (4), and a lifting assembly (8) is provided at the bottom of the pressing assembly (2), the lifting assembly (8) is used to drive the pressing assembly (2) to move up and down, so that the grinding roller (3) can move up and down while rolling the bamboo material.

2. The bamboo material grinding equipment according to claim 1, characterized in that: The driving assembly comprises a motor (5), the output shaft of the motor (5) being fixed with a transmission shaft (51), and the transmission shaft (51) being transmission-connected to the shaft sleeve (7) via a bevel gear set.

3. The bamboo material grinding equipment according to claim 2, characterized in that: The lifting assembly (8) comprises a shaft (83), a driven gear (53) being fixed to the shaft (83), a driving gear (52) being fixed to the transmission shaft (51), the driving gear (52) being meshingly connected to the driven gear (53), a spring being connected between the pressing assembly (2) and the shaft sleeve (7) to apply a downward elastic force to the pressing assembly (2), and the shaft (83) being connected to an eccentric column (81), the eccentric column (81) being capable of intermittently lifting the pressing assembly (2) upward.

4. The bamboo material grinding equipment according to claim 3, characterized in that: The cross section of the eccentric column (81) is elliptical, the minimum cross section diameter of the eccentric column (81) remains unchanged, and the maximum cross section diameter of the eccentric column (81) gradually changes along the axial direction of the eccentric column (81). The surface of the shaft rod (83) has an axial groove (84), and the eccentric column (81) is guided by the axial groove (84) and can move along the axial direction of the shaft rod (83) to adjust the contact between the eccentric column (81) and the top pressing assembly (2) at different positions. The surface of the shaft rod (83) is threadedly connected with a nut for positioning the eccentric column (81).

5. The bamboo material grinding equipment according to claim 4, characterized in that: The small diameter end of the eccentric column (81) has a cylindrical portion (82), and the height of the pressing component (2) does not change when it contacts the cylindrical portion (82).

6. The bamboo material grinding equipment according to claim 1, characterized in that: The jacking assembly (2) comprises a center disk (21), the center disk (21) has an air cavity (23) therein, a plurality of openings (24) penetrating the air cavity (23) are provided around the center disk (21), a plug arm (22) is elastically slidably disposed in each opening (24) via a spring, the grinding roller (3) is rotatably mounted on the outer end of the plug arm (22), gas is introduced into the air cavity (23) to generate pressure on the plug arm (22), so that the grinding roller (3) can be pressed and contacted with the grinding ring (4), a shaft column (25) is fixed at the bottom of the center disk (21), the shaft column (25) passes through the shaft sleeve (7) and contacts with the jacking assembly (8), and the shaft column (25) and the shaft sleeve (7) are rotationally limited by a matching sliding key (27) and a keyway (71).

7. The bamboo material grinding equipment according to claim 6, characterized in that: The bottom end of the shaft column (25) is rotatably connected to an end shaft (9), and a ball (93) is rotatably arranged at the bottom end of the end shaft (9), and the ball (93) is in contact with the lifting assembly (8).

8. The bamboo material grinding equipment according to claim 7, characterized in that: An air passage is provided inside the shaft column (25) and the end shaft (9), the air passage is connected to the air cavity (23), and an air valve (91) and an air pressure sensor (92) connected to the air passage are provided on the surface of the end shaft (9).

9. The bamboo material grinding equipment according to claim 1, characterized in that: A plurality of scrapers (6) are fixed around the shaft sleeve (7) and arranged obliquely, the bottom of the scrapers (6) contacts the bottom of the housing (1), and the top of the scrapers (6) points to the contact position between the grinding roller (3) and the grinding ring (4).

10. The bamboo material grinding equipment according to claim 1, characterized in that: The casing (1) is provided with a material feed port (11) on the outside, an air inlet (12) is provided tangentially at the bottom of the casing (1), and a guide plate (14) is distributed in an annular pattern at the bottom of the casing (1), the guide plate (14) being inclined to point in the direction of rotation of the shaft sleeve (7).

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