Straw pulverizer capable of adjusting grinding fineness

Abstract

The invention relates to the technical field of grinding equipment, in particular to a straw pulverizer capable of adjusting grinding fineness, which comprises a rack, a grader rotor is arranged in the rack, an annular flow dividing wall is arranged below the grader rotor, a grinding tank is arranged below the annular flow dividing wall, and a grinding assembly is arranged on the inner side of the grinding tank. And the bottom ends of the grinding tank body and the middle rotating shaft are connected with transmission assemblies, and the transmission assemblies are used for driving the grinding tank body and the grinding assembly to rotate in opposite directions. When the grinding tank body and the grinding assembly rotate relative to each other, a traditional structure cannot control and adjust a grinding roller in a moving state, so that the grinding fineness of powder cannot be adjusted, the inclination angle of the grinding roller is adjusted through the arrangement of the angle adjusting assembly and the longitudinal adjusting assembly, and therefore the grinding fineness of equipment is adjusted; therefore, under the condition that the grinding roller and the grinding wall rotate relative to each other, the inclination angle of the grinding roller is adjusted, and the grinding fineness of equipment is controlled while the grinding efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of grinding equipment, in particular to a straw grinding machine with adjustable grinding fineness. Background Art

[0002] Straw is a general term for the stems and leaves (ears) of mature crops, usually referring to the remaining parts of wheat, rice, corn, potatoes, rapeseed, cotton, sugarcane and other crops (usually coarse grains) after the seeds are harvested. Straw is rich in organic matter such as nitrogen, phosphorus, potassium, calcium and magnesium. By grinding the straw into powder through a grinder, it can be used to process feed, fuel, fertilizer, industrial raw materials and other materials.

[0003] Most of the existing grinding mills use a motor to drive the grinding disc to rotate, and the grinding roller grinds the material passively, or the motor drives the grinding roller to rotate, and the grinding disc is stationary or driven to grind the material. When faced with materials with high fiber content such as straw, there may be problems such as insufficient grinding or crushing efficiency and low grinding efficiency. At the same time, straw powder often requires different grinding finenesses depending on its different uses. It is necessary to improve the internal structure of the grinding mill to meet the problems of low efficiency and difficult fineness control that may exist in traditional grinding mills.

[0004] Therefore, it is necessary to invent a straw flour mill with adjustable grinding fineness to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a straw mill with adjustable grinding fineness, by driving the grinding tank and the grinding roller at the same time, making the two rotate in opposite directions, increasing the relative movement speed between the material and the grinding roller and the grinding disc, and by controlling the inclination angle of the grinding roller, the purpose of controlling the grinding fineness of the equipment while improving the grinding efficiency is achieved.

[0006] To achieve this object, the present invention adopts the following technical solutions: Provided is a straw mill with adjustable grinding fineness, comprising a frame, a classifier rotor for powder classification is arranged inside the frame, an annular diversion wall for powder separation is arranged below the classifier rotor, a grinding tank body is arranged below the annular diversion wall, a grinding assembly is arranged inside the grinding tank body, the grinding assembly comprises a middle rotating shaft rotating at the axis of the grinding tank body, the bottom ends of the grinding tank body and the middle rotating shaft are both connected with a transmission assembly, the transmission assembly is used to drive the grinding tank body and the grinding assembly to rotate in opposite directions, and the middle rotating shaft is located at the inner part of the grinding tank body. A plurality of rotating brackets are sequentially sleeved, and a plurality of angle adjustment components are arranged at the bottom end of the rotating bracket. The angle adjustment component comprises a grinding roller body hinged at the end of the rotating bracket and an annular connecting block for controlling the angle adjustment of the plurality of grinding roller bodies on the rotating bracket. The angle adjustment component is used to adjust the inclination angle of the grinding roller body. A longitudinal adjustment component is arranged on the top of the middle rotating shaft. The longitudinal adjustment component comprises a synchronous pressing rod, and the synchronous pressing rod is used to synchronously control the plurality of longitudinal annular connecting blocks to slide longitudinally. An electric push rod for pressing the longitudinal adjustment component is installed inside the annular diversion wall.

[0007] As a preferred solution of a straw mill with adjustable grinding fineness, the transmission assembly comprises a gear ring, a planetary gear, a gear rack, a supporting base, a sun gear, a transmission belt and a pulley, the gear ring is detachably mounted on the bottom end of the grinding tank body, a wheel groove is provided on the outer side of the gear ring, a plurality of planetary gears are meshed with the inner side of the gear ring, the gear rack is respectively mounted on both sides of the planetary gears, the gear rack at the bottom end is fixedly mounted on the bottom of the frame, the supporting base is arranged at the bottom end of the gear rack, the supporting base is used to support the rotation of the gear ring, the sun gear is located at the center position of the gear rack and rotates, and at the same time meshes with a plurality of planetary gears, the top end of the sun gear is fixedly connected with the middle rotating shaft, the pulley is located on one side of the frame, a transmission belt is sleeved on the outer side of the pulley and the gear ring, and a driving motor for driving it to rotate is arranged at the top end of the pulley.

[0008] As a preferred solution of a straw mill with adjustable grinding fineness, the angle adjustment assembly also includes a grinding roller mounting block, an L-shaped connecting rod and a slider. The outer side wall of the rotating bracket is provided with a plurality of hinge grooves, and the top end of the grinding roller mounting block is hinged with the rotating bracket through the hinge groove. The grinding roller body is located inside the grinding roller mounting block and rotates. The short side of the L-shaped connecting rod is hinged to one side of the grinding roller mounting block, and the long side of the L-shaped connecting rod is hinged to the annular connecting block. Multiple sliders are located on the inner side of the annular connecting block, and the top end of the middle rotating shaft is provided with a plurality of longitudinal sliding grooves. The slider slides longitudinally along the longitudinal sliding grooves. A threaded hole is provided on the inner side of the slider, and the outer surface of the synchronous pressing rod is provided with threads, and is threadedly connected with multiple annular connecting blocks through threaded holes.

[0009] As a preferred solution of a straw grinding machine with adjustable grinding fineness, the grinding assembly also includes an ejector spring, a material rejection plate and an annular sealing block. A circular groove is provided at the top end of the middle rotating shaft, and the bottom end of the ejector spring is fixedly installed inside the circular groove. The ejector spring is used to apply an upward elastic force to the longitudinal adjustment assembly. The material rejection plate is located at the top end of the rotating bracket, and the annular sealing block is sleeved at the middle and lower position of the middle rotating shaft. The annular sealing block is used to prevent powder leakage.

[0010] As a preferred solution of a straw grinding machine with adjustable grinding fineness, a grinding wall is provided at the position where the grinding tank body and the grinding roller body are adapted, and a discharging slope inclined to one side is provided at the bottom end of the grinding wall, and a plurality of discharging holes are opened on one side of the discharging slope, and the discharging holes are used to discharge the ground straw to the inner wall side of the frame, and a sealing protrusion is provided at the center position of the discharging slope, and the outer edge portion of the sealing protrusion is in contact with the inner edge portion of the annular sealing block.

[0011] As a preferred solution of a straw grinding machine with adjustable grinding fineness, the interior of the frame is provided with an aggregate slope below the discharge slope, a powder flow channel is left between the inner side surface of the frame and the outer side surface of the grinding tank body, a guide ring for guiding the grinding tank body is fixedly installed at the center position of the aggregate slope, a plurality of exhaust holes are provided at the top of the guide ring, a rectangular support block is provided at the bottom end of the frame, a bottom limit block is fixedly installed at the bottom end of the rectangular support block, the bottom limit block is fixedly connected to the gear frame located below, and a limit slot matching the contour of the support base is provided at the bottom of the bottom limit block.

[0012] As a preferred solution for a straw grinding machine with adjustable grinding fineness, the supporting base includes a bottom extension arm and a rolling ball. A plurality of the bottom extension arms are installed at the bottom end of the gear rack and extend to the bottom of the gear ring. The rolling ball is rotatably arranged between the bottom extension arm and the gear ring.

[0013] As a preferred solution for a straw grinding machine with adjustable grinding fineness, the longitudinal adjustment component also includes a synchronous disc, which is detachably mounted with multiple synchronous pressing rods, and the synchronous disc is located above the ejection spring, and a pressing disc is mounted on the telescopic end of the electric push rod, and the pressing disc is coaxially arranged with the synchronous disc, and multiple guide wheels are fixedly mounted on the bottom end of the pressing disc, and the guide wheels are used to keep the synchronous disc rotating during the process of applying pressing force.

[0014] As a preferred solution of a straw grinding machine with adjustable grinding fineness, a motor mounting seat for mounting a driving motor is provided on one side of the frame, a classifier motor for driving the classifier rotor to rotate is provided on the top of the frame, an outer connecting block is provided on the outer surface of the annular diverter wall, an inner supporting block is provided on the inner surface of the annular diverter wall, the electric push rod is located at the bottom end at the center position of the inner supporting block, and the outer surface of the annular diverter wall is located on the inner side of the grinding tank body.

[0015] The beneficial effects of the present invention are as follows: by driving the grinding tank body and the grinding assembly to rotate in opposite directions through the transmission assembly, the speed of relative movement between the material and the grinding roller and the grinding wall can be increased, so that the material is subjected to stronger shearing and extrusion, thereby improving the grinding efficiency; when the grinding tank body and the grinding assembly rotate in opposite directions, the traditional structure cannot control and adjust the grinding roller in a moving state, thereby failing to adjust the grinding fineness of the powder; by setting the angle adjustment assembly and the longitudinal adjustment assembly, the inclination angle of the grinding roller can be adjusted during the rotation of the grinding assembly, thereby adjusting the grinding fineness of the equipment; therefore, the mechanism realizes the adjustment of the inclination angle of the grinding roller when the grinding roller and the grinding wall rotate relative to each other, thereby controlling the grinding fineness of the equipment while improving the grinding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required to be used in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is a partial cross-sectional assembly schematic diagram of the present invention.

[0019] Figure 3 It is a schematic diagram of the structural assembly of the grinding assembly of the present invention.

[0020] Figure 4 The present invention Figure 3 Enlarged structural diagram at A in the middle.

[0021] Figure 5 It is a schematic diagram of the powder flow structure of the present invention.

[0022] Figure 6 It is a schematic diagram of the connection relationship structure of the annular diverter wall of the present invention.

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

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

[0025] Fig. 9 The present invention Figure 8 Enlarged structural diagram at B in the middle.

[0026] Fig.10 It is a schematic diagram of the structure of the longitudinal adjustment component of the present invention.

[0027] Fig.11 The present invention Fig.10 Enlarged structural diagram at point C in the middle.

[0028] Fig.12 It is a schematic diagram of the structure of the electric push rod of the present invention.

[0029] Fig.13 It is a schematic diagram of the transmission assembly structure of the present invention.

[0030] Fig.14 It is a schematic diagram of the structure of the bottom limit block of the present invention.

[0031] Fig.15 It is a schematic diagram of the position relationship structure of the rolling ball of the present invention.

[0032] Fig.16 It is a schematic diagram of the position relationship structure of the transmission belt of the present invention.

[0033] In the figure: 1. Frame; 101. Aggregate slope; 102. Guide ring; 103. Exhaust hole; 104. Rectangular support block; 105. Bottom limit block; 106. Limit slot; 2. Motor mounting seat; 3. Driving motor; 4. Classifier motor; 5. Air outlet; 6. Air inlet; 7. Classifier rotor; 8. Annular diversion wall; 801. Outer connecting block; 802. Inner supporting block; 9. Electric push rod; 901. Pressing disc; 902. Guide wheel; 10. Grinding tank body; 1001. Grinding wall; 1002. Discharging hole; 1003. Discharging slope; 1004. Sealing convex block; 11. Transmission assembly; 1101. Ring gear; 1102. Planetary gear; 1103. Gear rack; 1104. Sun gear; 1105. Transmission belt; 1106. Bottom extension arm; 1107. Rolling ball; 1108. Pulley; 12. Grinding assembly; 1201. Middle rotating shaft; 1202. Longitudinal slide; 1203. Ejection spring; 1204. Rotating bracket; 1205. Articulated groove; 1206. Throwing plate; 1207. Annular sealing block; 13. Angle adjustment assembly; 1301. Grinding roller body; 1302. Grinding roller mounting block; 1303. L-shaped connecting rod; 1304. Ring connecting block; 1305. Sliding block; 1306. Threaded hole; 14. Longitudinal adjustment component; 1401. Synchronous disc; 1402. Synchronous pressing rod. DETAILED DESCRIPTION

[0034] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0035] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0036] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0037] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] refer to Figures 1 to 16The present invention provides a straw mill with adjustable grinding fineness, including a frame 1, wherein a classifier rotor 7 for powder classification is arranged inside the frame 1, an annular diverter wall 8 for powder separation is arranged below the classifier rotor 7, a grinding tank body 10 is arranged below the annular diverter wall 8, a grinding assembly 12 is arranged inside the grinding tank body 10, and the grinding assembly 12 includes a middle rotating shaft 1201 rotating at the axis of the grinding tank body 10, the bottom ends of the grinding tank body 10 and the middle rotating shaft 1201 are both connected with a transmission assembly 11, and the transmission assembly 11 is used to drive the grinding tank body 10 and the grinding assembly 12 to rotate in opposite directions, and the part of the middle rotating shaft 1201 located inside the grinding tank body 10 is sequentially sleeved with a plurality of rotating shafts. The bracket 1204, the bottom end of the rotating bracket 1204 is provided with a plurality of angle adjustment components 13, the angle adjustment component 13 includes a grinding roller body 1301 hinged to the end of the rotating bracket 1204 and an annular connecting block 1304 for controlling the angle adjustment of the plurality of grinding roller bodies 1301 on the rotating bracket 1204, the angle adjustment component 13 is used to adjust the inclination angle of the grinding roller body 1301, the top of the middle rotating shaft 1201 is provided with a longitudinal adjustment component 14, the longitudinal adjustment component 14 includes a synchronous pressing rod 1402, the synchronous pressing rod 1402 is used to synchronously control the plurality of longitudinal annular connecting blocks 1304 to slide longitudinally, and an electric push rod 9 for pressing the longitudinal adjustment component 14 is installed inside the annular diversion wall 8.

[0039] The top of the frame 1 is provided with an air outlet 5, and the side wall of the frame 1 is provided with an air inlet 6 extending to the inside of the annular diverter wall 8. The air inlet 6 is used for feeding, and the air outlet 5 is used for discharging the classified powder. A fan needs to be provided at the bottom of the frame 1 to output an upward initial airflow. During use, the straw falls to the top of the grinding assembly 12 through the air inlet 6, and the straw is pushed to the grinding area by the rotation of the throwing plate 1206. After the grinding is completed, the straw moves to the top of the aggregate slope 101 through the discharge slope 1003 and the discharge hole 1002, and the bottom fan applies an upward initial airflow. The gas starts to flow, and the gas passes through the exhaust hole 103 and the aggregate slope 101 to lift the ground powder upward. The powder is screened by the classifier rotor 7, and the qualified ones are discharged. The unqualified ones are guided by its slope and the annular diverter wall 8, and fall downward through the inside of the annular diverter wall 8 to wait for subsequent grinding processing. When it is necessary to adjust the grinding fineness, the electric push rod 9 presses the longitudinal adjustment component 14, so that the synchronous pressing rod 1402 synchronously drives the multiple annular connecting blocks 1304 to slide downward, thereby realizing the control of the angle of the grinding roller body 1301, thereby meeting different usage requirements.

[0040] The transmission assembly 11 includes a ring gear 1101, planetary gears 1102, a gear frame 1103, a support base, a sun gear 1104, a transmission belt 1105 and a pulley 1108. The ring gear 1101 is detachably mounted on the bottom end of the grinding tank body 10. A wheel groove is provided on the outer side of the ring gear 1101. A plurality of planetary gears 1102 are meshed with the inner side of the ring gear 1101. The gear frame 1103 is respectively mounted on both sides of the planetary gears 1102. The gear frame 1103 at the bottom is fixedly mounted on the bottom of the frame 1. The base is arranged at the bottom end of the gear frame 1103, and the support base is used to support the rotation of the gear ring 1101. The sun gear 1104 is located at the center of the gear frame 1103 and rotates, and is meshed with multiple planetary gears 1102 at the same time. The top of the sun gear 1104 is fixedly connected with the middle rotating shaft 1201. The pulley 1108 is located on one side of the frame 1. The outer side of the pulley 1108 and the gear ring 1101 is provided with a transmission belt 1105, and the top of the pulley 1108 is provided with a driving motor 3 for driving the rotation thereof. The gear ring 1101 is driven to rotate by the transmission belt 1105, thereby driving the inner sun gear 1104 to rotate in the opposite direction, thereby improving the grinding efficiency. By fixing the gear frame 1103, the installation difficulty of the transmission assembly 11 can be reduced, and the gear falling off can be avoided.

[0041] The angle adjustment assembly 13 also includes a grinding roller mounting block 1302, an L-shaped connecting rod 1303 and a slider 1305. The outer side wall of the rotating bracket 1204 is provided with a plurality of hinge grooves 1205. The top of the grinding roller mounting block 1302 is hinged with the rotating bracket 1204 through the hinge grooves 1205. The grinding roller body 1301 is located inside the grinding roller mounting block 1302 and rotates. The short side of the L-shaped connecting rod 1303 is hinged with one side of the grinding roller mounting block 1302. The long side of the rod 1303 is hinged with the annular connection block 1304, and the plurality of sliders 1305 are located inside the annular connection block 1304. The top of the middle rotating shaft 1201 is provided with a plurality of longitudinal slide grooves 1202, and the sliders 1305 slide longitudinally along the longitudinal slide grooves 1202. The inner side of the sliders 1305 is provided with threaded holes 1306. The outer surface of the synchronous pressing rod 1402 is provided with threads, and is threadedly connected with the plurality of annular connection blocks 1304 through the threaded holes 1306. The setting of the threaded connection can achieve the effect of synchronously controlling the downward sliding of the plurality of annular connection blocks 1304 while reducing the difficulty of installing the annular connection block 1304. The grinding roller body 1301 can be made of metal or non-metal materials of lower quality, which can reduce the difficulty of downward movement of the synchronous pressing rod 1402 while meeting the requirements of straw grinding.

[0042] The grinding assembly 12 also includes an ejector spring 1203, a material ejection plate 1206 and an annular sealing block 1207. A circular groove is provided at the top of the middle rotating shaft 1201. The bottom end of the ejector spring 1203 is fixedly installed inside the circular groove. The ejector spring 1203 is used to apply an upward elastic force to the longitudinal adjustment assembly 14. The material ejection plate 1206 is located at the top of the rotating bracket 1204. The annular sealing block 1207 is sleeved at the middle and lower position of the middle rotating shaft 1201. The annular sealing block 1207 is used to prevent powder leakage. The ejector spring 1203 is provided to drive the longitudinal adjustment assembly 14 to move upward after the electric push rod 9 is separated, under the weight of the grinding roller body 1301 itself and the upward elastic force applied by the ejector spring 1203, so that the grinding roller body 1301 returns to a state parallel to the grinding wall 1001. A grinding wall 1001 is provided at the position where the grinding tank body 10 and the grinding roller body 1301 are adapted. A discharge slope 1003 inclined to one side is provided at the bottom end of the grinding wall 1001. A plurality of discharge holes 1002 are provided on one side of the discharge slope 1003. The discharge holes 1002 are used to discharge the ground straw to one side of the inner wall of the frame 1. A sealing protrusion 1004 is provided at the center of the discharge slope 1003. The outer edge of the sealing protrusion 1004 fits with the inner edge of the annular sealing block 1207. The opening of the discharge hole 1002 can throw out the powder by centrifugal force during the rotation of the grinding tank body 10, so as to facilitate the entry of the classifier rotor 7 through the rising gas. The setting of the sealing protrusion 1004 is used to support and guide the middle rotating shaft 1201 so that it can rotate smoothly.

[0043] The inside of the frame 1 is provided with a collection slope 101 below the discharge slope 1003, a powder flow channel is left between the inner side of the frame 1 and the outer side of the grinding tank body 10, a guide ring 102 for guiding the grinding tank body 10 is fixedly installed at the center of the collection slope 101, and a plurality of exhaust holes 103 are provided at the top of the guide ring 102, and a rectangular support block 104 is provided at the bottom end of the frame 1, and a bottom limit block 105 is fixedly installed at the bottom end of the rectangular support block 104, and the bottom limit block 105 is fixedly connected with the gear rack 1103 located below, and a limit slot 106 matching the contour of the support base is provided at the bottom of the bottom limit block 105. The setting of the guide ring 102 is used to ensure that the grinding tank body 10 can rotate smoothly and avoid large shaking during the rotation process. The inclined setting of the aggregate slope 101 is also used to prevent the powder from leaking out from below through the exhaust hole 103, causing the powder to spread outward.

[0044] The support base includes a bottom extension arm 1106 and a rolling ball 1107. A plurality of the bottom extension arms 1106 are mounted on the bottom end of the gear frame 1103 and extend to the bottom of the gear ring 1101. The rolling ball 1107 is rotatably disposed between the bottom extension arm 1106 and the gear ring 1101. The rolling ball 1107 and the bottom extension arm 1106 are disposed to support the bottom of the gear ring 1101 and reduce the pressure and friction required to be borne by the gear ring 1101 when rotating.

[0045] The longitudinal adjustment assembly 14 also includes a synchronous disc 1401, which is detachably mounted with a plurality of synchronous pressing rods 1402, and the synchronous disc 1401 is located above the ejection spring 1203, and a pressing disc 901 is mounted on the telescopic end of the electric push rod 9, and the pressing disc 901 is coaxially arranged with the synchronous disc 1401, and a plurality of guide wheels 902 are fixedly mounted on the bottom end of the pressing disc 901, and the guide wheels 902 are used to keep the synchronous disc 1401 rotating during the application of the pressing force. The pressing disc 901 is coaxially arranged with the synchronous disc 1401, which can prevent the electric push rod 9 from being shaken due to misalignment, and the guide wheels 902 on the pressing disc 901 are arranged at equal distances around the center of the circle.

[0046] A motor mounting seat 2 for mounting a driving motor 3 is provided on one side of the frame 1, a classifier motor 4 for driving the classifier rotor 7 to rotate is provided on the top of the frame 1, an outer connecting block 801 is provided on the outer surface of the annular diverter wall 8, an inner supporting block 802 is provided on the inner surface of the annular diverter wall 8, the electric push rod 9 is located at the bottom end at the center of the inner supporting block 802, and the outer surface of the annular diverter wall 8 is located on the inner side of the grinding tank 10. A certain gap is left between the top of the annular diverter wall 8 and the classifier rotor 7 to allow powder that fails to pass the classification to fall downward.

[0047] The present invention drives the grinding tank body 10 and the grinding assembly 12 to rotate in opposite directions through the transmission component 11, which can increase the speed of relative movement between the material and the grinding roller and the grinding wall 1001, so that the material is subjected to stronger shearing and extrusion, thereby improving the grinding efficiency. When the grinding tank body 10 and the grinding assembly 12 rotate in opposite directions, the traditional structure cannot control and adjust the grinding roller in a moving state, thereby failing to adjust the grinding fineness of the powder. Through the setting of the angle adjustment component 13 and the longitudinal adjustment component 14, the inclination angle of the grinding roller can be adjusted during the rotation of the grinding assembly 12, thereby adjusting the grinding fineness of the equipment. Therefore, the mechanism realizes the adjustment of the inclination angle of the grinding roller when the grinding roller and the grinding wall 1001 rotate relative to each other, thereby controlling the grinding fineness of the equipment while improving the grinding efficiency.

[0048] It should be noted that the above specific implementations are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art should understand that various modifications, equivalent substitutions, changes, etc. can be made to the present invention. However, as long as these changes do not deviate from the spirit of the present invention, they should be within the scope of protection of the present invention. In addition, some terms used in the specification and claims of this application are not restrictive, but are only for the convenience of description.

Claims

1. A straw mill with adjustable grinding fineness, characterized in that: The invention comprises a frame (1), wherein a classifier rotor (7) for powder classification is arranged inside the frame (1), an annular flow dividing wall (8) for powder separation is arranged below the classifier rotor (7), a grinding tank body (10) is arranged below the annular flow dividing wall (8), a grinding assembly (12) is arranged inside the grinding tank body (10), the grinding assembly (12) comprises a rotating middle shaft (1201) located at the axis of the grinding tank body (10), the bottom ends of the grinding tank body (10) and the middle shaft (1201) are both connected to a transmission assembly (11), the transmission assembly (11) is used to drive the grinding tank body (10) and the grinding assembly (12) to rotate in opposite directions, the part of the middle shaft (1201) located inside the grinding tank body (10) is sequentially sleeved with a plurality of rotating brackets (1204), the rotating A plurality of angle adjustment components (13) are arranged at the bottom end of the rotating bracket (1204), the angle adjustment components (13) comprising a grinding roller body (1301) hinged to the end of the rotating bracket (1204) and an annular connection block (1304) for controlling the angle adjustment of the plurality of grinding roller bodies (1301) on the rotating bracket (1204), the angle adjustment components (13) being used to adjust the inclination angle of the grinding roller body (1301), a longitudinal adjustment component (14) being arranged at the top of the middle rotating shaft (1201), the longitudinal adjustment component (14) comprising a synchronous pressing rod (1402), the synchronous pressing rod (1402) being used to synchronously control the plurality of longitudinal annular connection blocks (1304) to slide in the longitudinal direction, and an electric push rod (9) for pressing the longitudinal adjustment component (14) being installed inside the annular diversion wall (8).

2. A straw mill with adjustable grinding fineness according to claim 1, characterized in that: The transmission assembly (11) comprises a ring gear (1101), planetary gears (1102), a gear rack (1103), a support base, a sun gear (1104), a transmission belt (1105) and a pulley (1108); the ring gear (1101) is detachably mounted on the bottom end of the grinding tank body (10); a wheel groove is provided on the outer side of the ring gear (1101); a plurality of planetary gears (1102) mesh with the inner side of the ring gear (1101); the gear rack (1103) is respectively mounted on both sides of the planetary gears (1102); the gear rack (1103) at the bottom end is fixedly mounted on the bottom of the frame (1); A support base is arranged at the bottom end of the gear frame (1103), and the support base is used to support the rotation of the gear ring (1101). The sun gear (1104) is located at the center of the gear frame (1103) and rotates, and is simultaneously meshed with a plurality of planetary gears (1102). The top end of the sun gear (1104) is fixedly connected to the middle rotating shaft (1201). The pulley (1108) is located at one side of the frame (1). A transmission belt (1105) is sleeved on the outer side of the pulley (1108) and the gear ring (1101). A driving motor (3) for driving the pulley (1108) to rotate is arranged at the top end of the pulley (1108).

3. A straw mill with adjustable grinding fineness according to claim 2, characterized in that: The angle adjustment assembly (13) further comprises a grinding roller mounting block (1302), an L-shaped connecting rod (1303) and a sliding block (1305); the outer side wall of the rotating bracket (1204) is provided with a plurality of hinge grooves (1205); the top end of the grinding roller mounting block (1302) is hingedly connected to the rotating bracket (1204) via the hinge grooves (1205); the grinding roller body (1301) is located inside the grinding roller mounting block (1302) and rotates; the short side of the L-shaped connecting rod (1303) is hingedly connected to one side of the grinding roller mounting block (1302); the L-shaped connecting rod (1303) is hingedly connected to the rotating bracket (1204); The long side of the rod (1303) is hinged with the annular connecting block (1304), and the plurality of sliders (1305) are located on the inner side of the annular connecting block (1304). The top end of the middle rotating shaft (1201) is provided with a plurality of longitudinal sliding grooves (1202), and the sliders (1305) slide longitudinally along the longitudinal sliding grooves (1202). The inner side of the sliders (1305) is provided with threaded holes (1306), and the outer surface of the synchronous pressing rod (1402) is provided with threads, and is threadedly connected with the plurality of annular connecting blocks (1304) through the threaded holes (1306).

4. A straw mill with adjustable grinding fineness according to claim 3, characterized in that: The grinding assembly (12) further comprises an ejector spring (1203), a material-throwing plate (1206) and an annular sealing block (1207); a circular groove is formed at the top end of the middle rotating shaft (1201); the bottom end of the ejector spring (1203) is fixedly mounted inside the circular groove; the ejector spring (1203) is used to apply an upward elastic force to the longitudinal adjustment assembly (14); the material-throwing plate (1206) is located at the top end of the rotating bracket (1204); the annular sealing block (1207) is sleeved at the middle and lower position of the middle rotating shaft (1201); and the annular sealing block (1207) is used to prevent powder leakage.

5. A straw mill with adjustable grinding fineness according to claim 4, characterized in that: A grinding wall (1001) is provided at a position where the grinding tank body (10) and the grinding roller body (1301) are matched, and a discharge slope (1003) inclined to one side is provided at the bottom end of the grinding wall (1001), and a plurality of discharge holes (1002) are provided on one side of the discharge slope (1003), and the discharge holes (1002) are used to discharge the ground straw to one side of the inner wall of the frame (1), and a sealing protrusion (1004) is provided at the center of the discharge slope (1003), and the outer edge portion of the sealing protrusion (1004) is in contact with the inner edge portion of the annular sealing block (1207).

6. A straw mill with adjustable grinding fineness according to claim 5, characterized in that: A material collecting slope (101) is arranged inside the frame (1) below the material discharging slope (1003); a powder flow channel is left between the inner side surface of the frame (1) and the outer side surface of the grinding tank body (10); a guide ring (102) for guiding the grinding tank body (10) is fixedly installed at the center position of the material collecting slope (101); a plurality of exhaust holes (103) are provided at the top of the guide ring (102); a rectangular support block (104) is arranged at the bottom end of the frame (1); a bottom limit block (105) is fixedly installed at the bottom end of the rectangular support block (104); the bottom limit block (105) is fixedly connected to the gear rack (1103) located below; and a limit slot (106) matching the contour of the support base is provided at the bottom of the bottom limit block (105).

7. A straw mill with adjustable grinding fineness according to claim 6, characterized in that: The support base comprises a bottom extension arm (1106) and a rolling ball (1107); a plurality of the bottom extension arms (1106) are mounted on the bottom end of the gear rack (1103) and extend to the bottom of the gear ring (1101); and the rolling ball (1107) is rotatably arranged between the bottom extension arm (1106) and the gear ring (1101).

8. The straw mill with adjustable grinding fineness according to claim 7, characterized in that: The longitudinal adjustment assembly (14) further comprises a synchronous disc (1401), the synchronous disc (1401) being detachably mounted with a plurality of synchronous pressing rods (1402), and the synchronous disc (1401) being located above the ejection spring (1203), the telescopic end of the electric push rod (9) being mounted with a pressing disc (901), the pressing disc (901) being coaxially arranged with the synchronous disc (1401), the bottom end of the pressing disc (901) being fixedly mounted with a plurality of guide wheels (902), the guide wheels (902) being used to keep the synchronous disc (1401) rotating during the process of applying the pressing force.

9. The straw mill with adjustable grinding fineness according to claim 8, characterized in that: A motor mounting seat (2) for mounting a driving motor (3) is provided on one side of the frame (1); a classifier motor (4) for driving a classifier rotor (7) to rotate is provided on the top of the frame (1); an outer connecting block (801) is provided on the outer surface of the annular diverter wall (8); an inner supporting block (802) is provided on the inner surface of the annular diverter wall (8); the electric push rod (9) is located at the bottom end at the center of the inner supporting block (802); and the outer surface of the annular diverter wall (8) is located on the inner side of the grinding tank body (10).

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