Multi-stage crushing and grinding device

Abstract

The invention relates to the technical field of grinding equipment, in particular to a multi-stage crushing and grinding device which comprises a crushing part, a grinding part and a screening part, the crushing part shears and crushes soybeans through rotating crushing rods and fixing rods arranged in a staggered mode, then the soybeans fall into a rotating grinding cavity, the soybeans are crushed and ground through an inner conical surface and an outer conical surface which are matched with each other, and then the soybeans are crushed and ground. And through screening of the screening part, large particles are conveyed into the bin body through the spiral lifting part to be smashed again, the relative position of the adjustable taper sleeve and the grinding cone is adjusted, the gap of the grinding cavity is changed, the grinding fineness is optimized, the grinding efficiency is improved, a weighing sensor transmits a weight signal to a control system in real time, and automatic control over the device is achieved. By increasing the threaded connection area between the lug plate and the lead screw, the adjustable taper sleeve can be well fixed, the problem that the adjustable taper sleeve is prone to moving in the grinding process only through the fixing mode that a gear and a rack are connected in a meshed mode is solved, and the grinding effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of grinding equipment, in particular to a multi-stage crushing and grinding device. Background Art

[0002] Soy protein is a plant protein. The production process of soy protein requires the preparation of soy powder first. When preparing soy powder, it must go through multiple processes such as crushing, grinding, and screening. The existing devices have problems such as insufficient crushing and uneven particle sizes when making soybeans. Screening is required later, and the existing devices cannot adjust the degree of crushing and grinding according to actual needs. Therefore, multiple equipment are required to work together, and the degree of automation and processing efficiency are low, resulting in high soy protein crushing costs, high energy consumption, and poor practicality.

[0003] The Chinese patent with the authorization announcement number CN215197124U discloses a grinding device for producing drugs for treating gastroesophageal reflux disease in the elderly, comprising a housing, a rotating motor is coaxially arranged on the outer side of the top of the housing, a transmission housing is arranged between the rotating motor and the housing, a rotating rod is coaxially connected to the rotating motor, the rotating rod passes through the transmission housing and is inserted into the housing, and a transmission assembly is connected to the rotating rod located in the transmission housing. The patent solves the problem that the grinding device cannot adjust the grinding spacing by arranging a lifting drive housing with a lifting assembly outside the housing, opening a hole, and arranging a grinding block and a grinding cone inside the housing, thereby improving the grinding effect. However, the patent only fixes the grinding block by the meshing connection of the gear and the rack, and during the grinding process, the material is ground by the rotational extrusion between the grinding cone and the grinding block, which will inevitably generate an upward force on the grinding block, and the force will increase as the gap between the grinding cone and the grinding block becomes smaller and the rotation speed of the grinding cone increases. The grinding block cannot be well fixed only by the meshing connection of the gear and the rack, which easily causes the grinding block to move during the grinding process, affecting the grinding effect. Summary of the invention

[0004] (I) Technical problem: The purpose of the present invention is to provide a multi-stage crushing and grinding device to solve the problem that the existing crushing and grinding devices cannot adjust the degree of crushing and grinding and cannot fix the grinding blocks well.

[0005] (II) Technical solution: To achieve the above-mentioned purpose, the present invention provides the following technical solution: A multi-stage crushing and grinding device comprises a control system and a vertically arranged bin body, the bin body being divided into an upper cylindrical bin chamber and a lower cubic bin chamber, a main motor being installed on the top of the cylindrical bin chamber, a feed port being arranged on one side of the main motor, a main shaft being arranged at the center of the cylindrical bin chamber and being connected to the driving end of the main motor, a crushing part, a grinding part and a screening part being arranged in sequence from top to bottom in the bin body, a spiral lifting part being arranged on the outside of the bin body, the grinding part (30) comprising a grinding cone (31), an adjustable cone sleeve (32) and four sets of lifting mechanisms (33), the grinding cone (31) being connected to the lower end of the main shaft (13), the upper part of the grinding cone (31) being an outer cone surface (311) having a spiral groove, the adjustable cone sleeve (32) being arranged in the bin body (10) in a manner of sliding up and down, the upper part of the adjustable cone sleeve (32) being larger at the top and smaller at the bottom The collecting cone (321) is provided with an inner cone (322) whose taper matches that of the outer cone (311); a grinding chamber is formed between the outer cone (311) and the inner cone (322); four ear plates (323) are radially extended from the lower part of the inner cone (322); the ear plates (323) are evenly distributed along the circumference and are provided with threaded holes (324); the lifting mechanism (33) is provided at the upper corner of the cubic chamber (10b); the lifting mechanism (33) comprises a vertically arranged screw rod (331) and a servo motor (332); the surface of the screw rod (331) is provided with an external thread matching the threaded hole (324); bearings are provided at both ends to support the rotation of the screw rod (331); the upper end of the screw rod (331) is connected to the output end of the servo motor (332).

[0006] Preferably, tapered roller bearings supporting the main shaft are provided at the upper and lower parts of the crushing part, and crushing rods and fixed rods are arranged in layers and at intervals from each other in the inner cavity of the crushing part. The crushing rods are radially distributed around the main shaft on each layer, and the fixed rod is a long cantilever structure, one end of which is fixed to the inner wall of the cylindrical chamber.

[0007] Preferably, the screening part includes a vibrating screen, a collecting tray, and a sorting channel. The vibrating screen is tilted above the collecting tray, shock-absorbing springs are provided at the four corners of the vibrating screen, and vibration motors are provided on both sides of the vibrating screen; the sorting channel is connected to the side wall of the cubic chamber and is located on the lower side of the vibrating screen, and the sorting channel is inclined and the inclination direction is consistent with the vibrating screen.

[0008] Preferably, the spiral lifting part includes a vertically arranged lifting cylinder, a spiral shaft and a lifting motor, the lifting cylinder is connected to the sorting channel, the spiral shaft is rotatably arranged in the lifting cylinder, the lifting motor is fixed on the upper part of the lifting cylinder and connected to the spiral shaft, and the upper part of the lifting cylinder is provided with a feeding pipe connected to the cylindrical chamber.

[0009] Preferably, a weighing sensor is provided at the bottom of the lifting cylinder, and the output signal of the weighing sensor is connected to the control system. The weighing sensor transmits the weight signal to the control system in real time. The control system calculates the weight and compares it with the set data. When the weight is greater than the set weight, the lifting motor is controlled to start.

[0010] (III) Beneficial effects: The present invention provides a multi-stage crushing and grinding device, which includes a crushing part, a grinding part, and a screening part. The crushing part shears and crushes the soybeans through rotating crushing rods and staggered fixed rods, and then the soybeans fall into a rotating grinding chamber, where the soybeans are crushed and ground through the inner and outer cone surfaces that cooperate with each other, and are screened by the screening part. The larger particles are sent into the bin by the spiral lifting part to be crushed again. By adjusting the relative position of the adjustable cone sleeve and the grinding cone, the gap in the grinding chamber is changed, the grinding fineness is optimized, and the grinding efficiency is improved. The weighing sensor transmits the weight signal to the control system in real time to realize automatic control of the device. In addition, by increasing the threaded connection area between the ear plate and the screw rod, the adjustable cone sleeve can be well fixed, avoiding the problem that the adjustable cone sleeve is easily moved during the grinding process due to the fixing method that only uses the meshing connection of the gear and the rack, thereby improving the grinding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The technical solutions and beneficial effects of the present invention will be made apparent by describing in detail the specific embodiments of the present invention in conjunction with the accompanying drawings.

[0012] Figure 1 It is a schematic diagram of the composition structure of a multi-stage crushing and grinding device of the present invention; Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 3 It is a schematic diagram of the structure of the adjustable cone sleeve of the present invention.

[0013] In the figure: 10. bin body; 10a. cylindrical bin; 10b. cubic bin; 11. main motor; 12. feed port; 13. main shaft; 20. crushing part; 21. tapered roller bearing; 22. crushing rod; 23. fixing rod; 30. grinding part; 31. grinding cone; 311. outer cone surface; 32. adjustable cone sleeve; 321. collecting cone; 322. inner cone surface; 323. ear plate; 324. threaded hole; 33. lifting mechanism; 331. screw rod; 332. servo motor; 40. screening part; 41. vibrating screen; 411. shock absorbing spring; 412. vibrating motor; 42. collecting tray; 43. sorting channel; 50. spiral lifting part; 51. lifting cylinder; 52. spiral shaft; 53. lifting motor; 54. feeding pipe; 55. weighing sensor; 60 control system. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0015] like Figure 1 , Figure 2 As shown, the present invention describes a multi-stage crushing and grinding device, including a control system 60 and a vertically arranged bin body 10, the bin body 10 is divided into an upper cylindrical bin chamber 10a and a lower cubic bin chamber 10b, a main motor 11 is installed on the top of the cylindrical bin chamber 10a, a feed port 12 is arranged on one side of the main motor 11, a main shaft 13 is arranged at the center of the bin body 10 and the upper end of the main shaft 13 is connected to the driving end of the main motor 11, and the bin body 10 is provided with a crushing part 20, a grinding part 30, and a screening part 40 from top to bottom; a spiral lifting part 50 is arranged on the outside of the bin body 40.

[0016] Among them, tapered roller bearings 21 supporting the main shaft 13 are provided at the upper and lower parts of the crushing part 20, and crushing rods 22 and fixed rods 23 are arranged in layers and spaced apart from each other in the inner cavity of the crushing part 20. The crushing rods 22 have 3-5 layers and are radially distributed around the main shaft 13 on each layer. The fixed rods 23 are long cantilever structures, and one end of the fixed rods 23 is fixed on the inner wall of the cylindrical chamber 10a. There is a gap between the crushing rods 22 and the fixed rods 23 of the adjacent layer in the axial direction; when the main motor 11 drives the main shaft 13 to rotate, the crushing rods 22 rotate together with the main shaft 13, and the gap space between the crushing rods 22 and the fixed rods 23 is used to squeeze, shear and crush the soybeans.

[0017] Among them, the grinding part 30 includes a grinding cone 31, an adjustable cone sleeve 32 and four sets of lifting mechanisms 33. The grinding cone 31 is connected to the lower end of the main shaft 13. The upper part of the grinding cone 31 is an outer cone surface 311 with a spiral groove; the adjustable cone sleeve 32 is slidably arranged in the above-mentioned warehouse body 10, the upper part of the adjustable cone sleeve 32 is a collecting cone 321 with a larger upper part and a smaller lower part, and the lower part of the adjustable cone sleeve 32 is an inner cone surface 322 that matches the taper of the outer cone surface 311. The surface of the inner cone surface 322 has a spiral groove, and a grinding cavity is formed between the outer cone surface 311 and the inner cone surface 322; four ear plates 323 extend radially from the lower part of the inner cone surface 322, and the ear plates pass through the warehouse wall of the cylindrical chamber 10a and enter the cubic chamber 10b. The ear plates 323 are evenly distributed along the circumference and are provided with threaded holes 324.

[0018] Furthermore, the lifting mechanism 33 is arranged at the upper corner of the cubic chamber 10b, and the lifting mechanism 33 includes a vertically arranged screw rod 331 and a servo motor 332. The surface of the screw rod 331 is provided with an external thread that matches the threaded hole 323. The two ends of the screw rod 331 are rotatably arranged on the warehouse wall of the grinding part 30 through bearings, and the upper end of the screw rod 331 is connected to the output end of the servo motor 332; when the four groups of servo motors 332 are running synchronously, the screw rod 331 is driven to rotate synchronously to realize the lifting and lowering of the adjustable cone sleeve 32, and the height of the adjustable cone sleeve 32 is accurately adjusted by using the thread to realize the adjustment of the gap in the grinding chamber. In addition, after turning off the servo motor 332, the screw rod 331 is in a stationary state, which is used to fix the adjustable cone sleeve 32. Figure 2 It can be seen from the figure that the threaded connection area between the ear plate 323 and the screw rod 331 is relatively large, which can effectively fix the adjustable cone sleeve 32 and prevent the adjustable cone sleeve 32 from moving during the grinding process and affecting the grinding effect.

[0019] Among them, the screening part 40 includes a vibrating screen 41, a collecting tray 42, and a sorting channel 43. The vibrating screen 41 is tilted above the collecting tray 42. Shock-absorbing springs 411 connected to the inner wall of the cubic chamber 10b are provided at the four corners of the vibrating screen 41. Vibrating motors 412 are provided on both sides of the vibrating screen 41; the sorting channel 43 is connected to the side wall of the cubic chamber 10b and is located on the side with a lower height of the vibrating screen 41. The sorting channel is inclined and the inclination direction is consistent with the vibrating screen 41.

[0020] Among them, the spiral lifting part 50 includes a vertically arranged lifting cylinder 51, a spiral shaft 52 and a lifting motor 53. The lifting cylinder 51 is connected to the sorting channel 43. The spiral shaft 52 is rotatably arranged in the lifting cylinder 51. The lifting motor 53 is fixed to the upper part of the lifting cylinder 51 and is connected to the spiral shaft 52. The upper part of the lifting cylinder 51 is provided with a feeding pipe 54 connected to the top of the cylindrical chamber 10a.

[0021] Furthermore, a weighing sensor 55 is provided at the bottom of the lifting cylinder 51, and the output signal of the weighing sensor 55 is connected to the control system 60. The weighing sensor 55 transmits the weight signal to the control system 60 in real time. The control system 60 calculates the weight and compares it with the set data. When the weight is greater than the set weight, the lifting motor 53 is controlled to start, and the large particle materials screened out from the bottom of the lifting cylinder 51 are lifted upward through the screw shaft 52. The materials reach the top and fall into the cylindrical chamber 10a through the feeding pipe 54.

[0022] By adopting the above technical solution, before use, the servo motor 332 is started, and the servo motor 332 drives the adjustable cone sleeve 32 to move up and down through the screw rod 331. The size of the grinding chamber between the grinding cone 31 and the adjustable cone sleeve 32 is adjusted according to the actual grinding needs of the soybeans. After adjustment, the servo motor 332 is turned off, and then the main motor 10 is started to drive the main shaft 13 to rotate at high speed, and the soybeans are sent from the feed port 12 into the bin body 10. The crushing rod 22 arranged in the chamber of the crushing part 20 is driven by the main shaft 13 to rotate at high speed, and works together with the fixed rod 23 to chop and crush the soybeans; the crushed soybeans fall into the collecting cone 321, enter the grinding chamber, and gradually flow out along the spiral groove during the high-speed rotation of the grinding cone 31 through the gap between the outer cone surface 311 and the inner cone surface 322. The grinding part 30 plays the role of crushing and grinding; the soybeans are crushed by the crushing part 20, crushed and ground by the grinding part 30, and the particles are refined under multi-stage processing, which has the advantages of uniform crushing, good crushing and grinding effect, and high efficiency. point; the crushed soybean powder falls onto the vibrating screen 41, and through the vibration of the vibrating screen 41, the particles with the required particle size fall into the collecting tray 42 below through the sieve holes of the vibrating screen 41, and the particles with larger particle size fall into the lifting cylinder 51 through the sorting channel 43. When the weight sensor 55 detects that the weight of the accumulated particles reaches the set starting value, the lifting motor 53 starts, and the screw shaft 52 lifts the material and drops it into the warehouse body 10 through the feeding pipe 54, and is crushed and ground again until the screening standard is met; when the weight sensor 55 detects that the weight of the accumulated particles is lower than the set shutdown value, the lifting motor 53 stops running.

[0023] It should also be noted that the control system 60 in this embodiment can adopt the existing conventional technical solutions and will not be described in detail in this embodiment; when working, the personnel can set the weight corresponding to the start and stop of the lifting motor 53 through the operation interface of the control system 60, and can also set the weight change rate through the program, automatically adjust the gap of the grinding chamber, optimize the grinding fineness, and improve the crushing efficiency.

[0024] The above are only implementation methods of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A multi-stage crushing and grinding device, characterized in that: The invention comprises a control system (60) and a vertically arranged bin body (10), wherein the bin body (10) is divided into an upper cylindrical bin chamber (10a) and a lower cubic bin chamber (10b), a main motor (11) is installed on the top of the cylindrical bin chamber (10a), a feed port (12) is arranged on one side of the main motor (11), a main shaft (13) is arranged at the center of the cylindrical bin chamber (10a), and the main shaft (13) is connected to the driving end of the main motor (11), and the interior of the bin body (10) is composed of a crushing part (20), a grinding part (30), and a screening part (40) from top to bottom; and a spiral lifting part (50) is arranged on the outside of the bin body (10); The grinding part (30) comprises a grinding cone (31), an adjustable cone sleeve (32) and four sets of lifting mechanisms (33); the grinding cone (31) is connected to the lower end of the main shaft (13); the upper part of the grinding cone (31) is an outer cone surface (311) having a spiral groove; the adjustable cone sleeve (32) is arranged in the bin body (10) to slide up and down; the upper part of the adjustable cone sleeve (32) is a collecting cone (321) with a larger upper part and a smaller lower part; the lower part of the adjustable cone sleeve (32) is an inner cone surface (322) matching the taper of the outer cone surface (311); a grinding cavity is formed between the outer cone surface (311) and the inner cone surface (322); four ear plates (323) extend radially from the lower part of the inner cone surface (322); the ear plates (323) are evenly distributed along the circumference and are provided with threaded holes (324); The lifting mechanism (33) is arranged at the upper corner of the cubic chamber (10b), and comprises a vertically arranged screw rod (331) and a servo motor (332); the surface of the screw rod (331) is provided with an external thread matching the threaded hole (324), and bearings are provided at both ends to support the rotation of the screw rod (331); the upper end of the screw rod (331) is connected to the output end of the servo motor (332).

2. A multi-stage crushing and grinding device according to claim 1, characterized in that: The upper and lower parts of the crushing part (20) are provided with tapered roller bearings (21) for supporting the main shaft (13). Crushing rods (22) and fixing rods (23) are arranged in layers and spaced apart from each other in the inner cavity of the crushing part (20). The crushing rods (22) are radially distributed around the main shaft (13) on each layer. The fixing rods (23) are long cantilever structures. One end of the fixing rods (23) is fixed to the inner wall of the cylindrical chamber (10a).

3. A multi-stage crushing and grinding device according to claim 1, characterized in that: The screening part (40) comprises a vibrating screen (41), a collecting tray (42), and a sorting channel (43); the vibrating screen (41) is arranged obliquely above the collecting tray (42); shock-absorbing springs (411) are provided at four corners of the vibrating screen (41); and vibrating motors (412) are provided on both sides of the vibrating screen (41); the sorting channel (43) is connected to the side wall of the cubic chamber (10b) and is located on a lower side of the vibrating screen (41); the sorting channel (43) is inclined and its inclination direction is consistent with that of the vibrating screen (41).

4. A multi-stage crushing and grinding device according to claim 3, characterized in that: The spiral lifting part (50) comprises a vertically arranged lifting cylinder (51), a spiral shaft (52) and a lifting motor (53); the lifting cylinder (51) is connected to the sorting channel (43); the spiral shaft (52) is rotatably arranged in the lifting cylinder (51); the lifting motor (53) is fixed to the upper part of the lifting cylinder (51) and is connected to the spiral shaft (52); and a feeding pipe (54) connected to the cylindrical chamber (10a) is provided on the upper part of the lifting cylinder (51).

5. A multi-stage crushing and grinding device according to claim 4, characterized in that: A weighing sensor (55) is provided at the bottom of the lifting cylinder (51). The output signal of the weighing sensor (55) is connected to the control system (60). The weighing sensor (55) transmits the weight signal to the control system (60) in real time. The control system (60) calculates the weight and compares it with the set data. When the weight is greater than the set weight, the lifting motor (53) is controlled to start.

Images