Soybean grinding machine and application method

Abstract

The invention relates to the technical field of food processing equipment, in particular to a soybean grinding machine and an application method. The soybean grinding machine comprises a machine frame assembly, a main power piece, a cutter feeding and retracting driving piece, a displacement sensor and a feeding spiral assembly. The rack assembly comprises a grinding cover, a grinding chamber, a static grinding sheet, a movable grinding sheet, a turntable and a main shaft assembly; the grinding cover is arranged on one side of the grinding chamber in an openable manner; the main shaft assembly is arranged on the other side of the grinding chamber; the spindle assembly comprises a spindle single piece, one end of the spindle single piece is connected with the output end of the main power piece through a coupler, and the other end is connected with a movable abrasive disc through a rotary disc. The static grinding sheet is fixedly arranged on the grinding cover and is opposite to the movable grinding sheet; the cutter feeding and retracting driving piece drives the movable abrasive disc to get close to or away from the static abrasive disc; the displacement sensor is arranged on the main shaft assembly; and the feeding spiral assembly is communicated with the grinding chamber. The application method is used for realizing high-precision adjustment of the grinding gap and ensuring sufficient grinding of soybeans; according to the application method, uniform feeding and cooling of the spindle single piece can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of food processing equipment, and in particular to a soybean grinder and an application method thereof. Background Art

[0002] In the soybean grinding process, controlling the grinding gap between the dynamic grinding disc and the static grinding disc can control the quality of the product grinding. Specifically, high-precision control of the grinding gap can make the soybeans fully ground and improve the dissolution rate of protein in the soybeans. However, the existing soybean grinding equipment mostly uses manual operation to adjust the grinding gap. It is difficult to control the grinding particle size of the soybeans by the equipment by manually adjusting the grinding gap based on experience. In addition, the dynamic grinding discs and static grinding discs used in the existing soybean grinding equipment are mostly grinding wheel grinding discs, which are easily damaged during the grinding operation and need to be replaced frequently, reducing production efficiency.

[0003] In addition, most existing soybean grinding equipment uses gravity feeding instead of spiral feeding, which is prone to uneven feeding and makes it difficult to achieve uniform grinding of soybeans. The spindle structure design and processing accuracy of traditional soybean grinding equipment are poor, resulting in large vibrations during operation; and the spindle is not equipped with a cooling circulation mechanism, which has poor heat dissipation effect and shortens the service life of the bearings.

[0004] In addition, traditional soybean grinding equipment is not equipped with safety features such as temperature monitoring devices and vibration monitoring devices. When abnormal conditions occur in the grinding equipment, it cannot be detected in time, which can easily lead to further damage to the grinding equipment.

[0005] In summary, there is an urgent need to develop a soybean grinder and an application method to solve the problems of existing soybean grinding equipment in terms of poor grinding gap adjustment accuracy, uneven feeding, low spindle structure design and processing accuracy, and lack of various safety configurations. Summary of the invention

[0006] The object of the present invention is to provide a soybean grinder and an application method, and the specific technical scheme is as follows:

[0007] In a first aspect, the present invention provides a soybean grinding machine, including a frame assembly, a main power member, a knife advance and retreat drive member, a displacement sensor and a feeding screw assembly;

[0008] The frame assembly includes a grinding cover, a grinding chamber, a static grinding plate, a dynamic grinding plate, a rotating disk and a main shaft assembly; the grinding cover can be opened and closed and is arranged on one side of the grinding chamber; the main shaft assembly is arranged on the other side of the grinding chamber; the main shaft assembly includes a single main shaft, one end of which is connected to the output end of the main power member through a coupling, and the other end is connected to the dynamic grinding plate through the rotating disk; the rotating disk and the dynamic grinding plate are both arranged in the grinding chamber; the static grinding plate is fixedly arranged on the grinding cover and is arranged opposite to the dynamic grinding plate;

[0009] The knife advance and retreat drive member is arranged on the spindle assembly, and drives the spindle assembly to link the spindle unit to drive the movable grinding plate to approach or move away from the static grinding plate; the displacement sensor is arranged on the spindle assembly;

[0010] The feeding screw assembly is arranged on the grinding cover and is communicated with the grinding chamber.

[0011] Optionally, the tool advance and retract drive component includes a power component, a worm wheel and a worm; the worm wheel is sleeved on the main shaft assembly, an internal thread is arranged on the inner wall surface where the worm wheel contacts the main shaft assembly, and an external thread matching the internal thread is arranged on the outer wall surface where the main shaft assembly contacts the worm wheel; the worm is meshed with the outer wall surface of the worm wheel; the output end of the power component is connected to the worm.

[0012] Optionally, the spindle assembly further includes a spindle sleeve, an angular contact bearing and a vibration sensor;

[0013] The spindle sleeve is sleeved on the spindle unit; the worm gear is sleeved on the spindle sleeve; the external thread is arranged on the spindle sleeve; the displacement sensor is arranged on the spindle sleeve; there are multiple angular contact bearings, which are all arranged between the spindle sleeve and the spindle unit; the vibration sensor is arranged on the spindle sleeve.

[0014] Optionally, a cooling water channel is provided on the spindle sleeve; the cooling water channel is spirally provided along the axial direction of the spindle sleeve; a water inlet and a water outlet connected to a water supply system are provided on the cooling water channel; solenoid valves are provided on the water inlet and the water outlet; a refrigerator is provided in the water supply system;

[0015] The spindle assembly further comprises a temperature sensor, and the temperature sensor is arranged on the spindle sleeve.

[0016] Optionally, a grease injection channel is provided on the spindle sleeve; a grease inlet port for communicating with the outside is provided on the grease injection channel, and a sealing plug is provided on the grease inlet port; and a grease outlet port communicating with the angular contact bearing is provided on the grease injection channel.

[0017] Optionally, the main shaft assembly also includes a bearing cover, a mechanical seal and an end cover; the bearing cover is arranged on the main shaft piece and is located on the end of the main shaft sleeve close to the grinding chamber; the mechanical seal is arranged in the bearing cover and is closely fitted with the main shaft piece; the end cover is arranged on the main shaft piece and is located on the end of the main shaft sleeve away from the grinding chamber.

[0018] Optionally, the soybean grinder further comprises a pulp dividing wheel; a hollow area is arranged in the axial direction of the movable grinding plate; the pulp dividing wheel is accommodated in the hollow area and is connected to the rotating disk; a plurality of pulp dividing blades are arranged on the annular surface of the pulp dividing wheel; a conical protrusion is arranged in the axial direction of the pulp dividing wheel; the pulp dividing blades and the conical protrusion are both arranged toward the feeding screw assembly;

[0019] The connection between the main shaft and the turntable is a conical interference fit connection;

[0020] The dynamic grinding disc and the static grinding disc are both stainless steel grinding discs.

[0021] Optionally, the feeding screw assembly includes a hopper, a conveying cylinder, a screw feeding rod, a mounting flange, a reducer and a driving component; the hopper is arranged on the conveying cylinder and is connected to the conveying cylinder; the mounting flange is arranged on one end of the conveying cylinder, and the other end of the conveying cylinder is arranged on the grinding cover and is connected to the grinding chamber; the reducer is arranged on the mounting flange; one end of the screw feeding rod is arranged outside the mounting flange and is connected to the output end of the driving component through the reducer; the other end of the screw feeding rod passes through the mounting flange and is arranged in the conveying cylinder; a sealing ring is arranged between the screw feeding rod and the mounting flange.

[0022] Optionally, the soybean grinder also includes a PLC controller; the main force component, the displacement sensor, the power component, the vibration sensor, the solenoid valve, the refrigerator, the temperature sensor, the reducer and the driving component are all connected to the PLC controller.

[0023] In a second aspect, the present invention provides an application method of the soybean grinder, comprising:

[0024] Step S1, the PLC controller controls the power component to drive the worm to rotate, and the worm sequentially links the worm wheel, the spindle sleeve, the spindle unit, the turntable and the dynamic grinding plate to achieve the dynamic grinding plate approaching the static grinding plate; the PLC controller monitors the grinding gap data between the dynamic grinding plate and the static grinding plate in real time through the displacement sensor, and accurately controls the power component to adjust the grinding gap to the target gap;

[0025] Step S2, adding soybeans into the hopper, the PLC controller controls the driving component and the reducer to drive the spiral feed rod to transport the soybeans to the grinding chamber; the PLC controller controls the main force component to link the main shaft through the coupling, and then drives the turntable to drive the dynamic grinding plate and the dividing wheel to rotate, the dividing wheel pushes the soybeans in the grinding chamber evenly and continuously to the target gap, and the rotation of the dynamic grinding plate relative to the static grinding plate realizes sufficient grinding of the soybeans;

[0026] During the soybean grinding operation, the PLC controller monitors the grinding gap data obtained in real time through the displacement sensor, and accurately controls the power component to adjust the grinding gap to the target gap; the PLC controller starts the refrigerator and the solenoid valve to introduce cooling water into the cooling water channel, so as to realize the circulation cooling of the spindle sleeve and the spindle unit; the PLC controller monitors the temperature data on the spindle sleeve in real time through the temperature sensor. If the temperature is higher than the warning temperature, the PLC controller issues an alarm to remind the maintenance personnel to check the soybean grinder; the PLC controller monitors the vibration amplitude data on the spindle sleeve in real time through the vibration sensor. If the vibration amplitude data is higher than the warning vibration amplitude, the PLC controller controls the power component to link the dynamic grinding plate away from the static grinding plate to avoid damage to the soybean grinder.

[0027] The application of the technical solution of the present invention has at least the following beneficial effects:

[0028] (1) The present invention provides a soybean grinding machine, which uses the advance and retract knife driving member to drive the main shaft assembly to link the main shaft unit to drive the movable grinding plate to approach the static grinding plate; the grinding gap data between the movable grinding plate and the static grinding plate is obtained by real-time monitoring by the displacement sensor, and the advance and retract knife driving member is accurately controlled to adjust the grinding gap to the target gap; the adjustment accuracy of the grinding gap is improved, thereby achieving sufficient grinding of the soybeans.

[0029] (2) The present invention provides a cooling water channel on the spindle sleeve; the cooling water channel is spirally arranged along the axial direction of the spindle sleeve, so as to facilitate cooling of the spindle sleeve and the spindle unit, thereby avoiding the problem of deformation of the spindle unit due to excessive temperature rise.

[0030] (3) The present invention uses the feeding screw assembly in combination with the pulp dividing wheel to achieve uniform feeding and ensure sufficient grinding of soybeans.

[0031] (4) In the application method of the present invention in a soybean grinder, the grinding gap data between the dynamic grinding plate and the static grinding plate obtained by real-time monitoring of the displacement sensor is adopted in step S1, and the PLC controller accurately controls the power component to adjust the grinding gap to the target gap, which can achieve high-precision adjustment of the grinding gap to ensure that the soybeans are fully ground; the step S2 is adopted to control the rotation of the spiral feed rod and the paddle wheel to achieve uniform feeding; the PLC controller starts the refrigerator and the solenoid valve to introduce cooling water into the cooling water channel to achieve cyclic cooling of the main shaft sleeve and the main shaft unit; the temperature sensor monitors the temperature data on the main shaft sleeve in real time. If the temperature is higher than the warning temperature, the PLC controller issues an alarm to remind the maintenance personnel to check the soybean grinder to ensure the safe operation of the soybean grinder and avoid damage to the soybean grinder. According to the vibration amplitude data on the main shaft sleeve obtained by real-time monitoring of the vibration sensor, if the vibration amplitude data is higher than the warning vibration amplitude, the PLC controller controls the power component to link the dynamic grinding plate away from the static grinding plate to avoid damage to the soybean grinder.

[0032] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0034] Figure 1 is a schematic diagram of the three-dimensional structure of a soybean grinder in the embodiment;

[0035] Figure 2 is a schematic diagram of the main structure of a soybean grinder in the embodiment;

[0036] Figure 3 is a structural schematic diagram of a frame assembly in an embodiment;

[0037] Figure 4 is a schematic cross-sectional structural diagram of a frame assembly in an embodiment;

[0038] Figure 5 It is a schematic diagram of the structure of the spindle sleeve;

[0039] Figure 6 It is a schematic diagram of the structure of the paddle wheel;

[0040] Among them, 1. frame assembly, 1.1. grinding cover, 1.2. grinding chamber, 1.3. static grinding disc, 1.4. dynamic grinding disc, 1.5. turntable, 1.6. spindle assembly, 1.6.1. spindle single piece, 1.6.2. spindle sleeve, 1.6.2.1. cooling water channel, 1.6.3. vibration sensor, 1.6.4. front angular contact bearing, 1.6.5. rear angular contact bearing, 1.6.6. temperature sensor, 1.6.7. bearing cover, 1.6 .8, mechanical seal, 1.6.9, end cover, 2, main power part, 3, advance and retract knife drive part, 3.1, power part, 3.2, worm gear, 3.3, worm, 4, displacement sensor, 5, feeding screw assembly, 5.1, hopper, 5.2, conveying cylinder, 5.3, screw feeding rod, 5.4, mounting flange, 5.5, reducer, 5.6, driving part, 6, paddle wheel, 6.1, paddle blade, 6.2, conical protrusion, 7, mounting bracket. DETAILED DESCRIPTION

[0041] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0042] Example:

[0043] See also Figure 1-Figure 6 , a soybean grinding machine, comprising a frame assembly 1, a main power member 2 (specifically a motor), a knife advance and retreat drive member 3, a displacement sensor 4 and a feeding screw assembly 5;

[0044] The frame assembly 1 includes a grinding cover 1.1, a grinding chamber 1.2, a stationary grinding plate 1.3, a dynamic grinding plate 1.4, a rotating disc 1.5 and a spindle assembly 1.6; the grinding cover 1.1 is hingedly arranged on one side of the grinding chamber 1.2 (in the grinding operation, the grinding cover 1.1 is fixed to the grinding chamber 1.2 by bolts); the spindle assembly 1.6 is arranged on the other side of the grinding chamber 1.2; the spindle assembly 1.6 includes a spindle single piece 1.6.1, one end of which is connected to the input end of the main power member 2 The output end is connected through a coupling (specifically a drum gear coupling), and the other end is connected to the dynamic grinding plate 1.4 through the rotating disk 1.5; the rotating disk 1.5 and the dynamic grinding plate 1.4 are both arranged in the grinding chamber 1.2; the static grinding plate 1.3 is fixedly arranged on the grinding cover 1.1 and arranged opposite to the dynamic grinding plate 1.4; the static grinding plate 1.3 and the dynamic grinding plate 1.4 are both stainless steel grinding plates, which have higher working strength than grinding wheel grinding plates, are not easy to be damaged, and reduce the replacement frequency;

[0045] The knife advance and retreat drive member 3 is arranged on the spindle assembly 1.6, and drives the spindle assembly 1.6 to link the spindle single member 1.6.1 to drive the movable grinding plate 1.4 to approach or move away from the static grinding plate 1.3; the displacement sensor 4 is arranged on the spindle assembly 1.6;

[0046] The feeding screw assembly 5 is arranged on the grinding cover 1.1 and is communicated with the grinding chamber 1.2.

[0047] See also Figure 3-Figure 4 The advance and retract tool driving member 3 includes a power component 3.1 (specifically a servo reduction motor), a worm wheel 3.2 and a worm 3.3; the worm wheel 3.2 is sleeved on the spindle assembly 1.6, an internal thread is arranged on the inner wall surface where the worm wheel 3.2 contacts the spindle assembly 1.6, and an external thread matching the internal thread is arranged on the outer wall surface where the spindle assembly 1.6 contacts the worm wheel 3.2; the worm 3.3 is meshed with the outer wall surface of the worm wheel 3.2; the output end of the power component 3.1 is connected to the worm 3.3.

[0048] See also Figure 4 , the spindle assembly 1.6 also includes a spindle sleeve 1.6.2, an angular contact bearing and a vibration sensor 1.6.3;

[0049] The spindle sleeve 1.6.2 is sleeved on the spindle single piece 1.6.1; the worm wheel 3.2 is sleeved on the spindle sleeve 1.6.2; the external thread is arranged on the spindle sleeve 1.6.2; the displacement sensor 4 is arranged on the spindle sleeve 1.6.2; there are multiple angular contact bearings, and they are all arranged between the spindle sleeve 1.6.2 and the spindle single piece 1.6.1; specifically, the angular contact bearings include three front angular contact bearings 1.6.4 and two rear angular contact bearings 1.6.5; the front angular contact bearing 1.6.4 is arranged close to the bearing cover 1.6.7, and the bearing cover 1.6.7 presses the front angular contact bearing 1 .6.4's outer ring of the outer spacer sleeve, the front angular contact bearing 1.6.4 contacts with the mounting stop of the main shaft sleeve 1.6.2 through the outer ring of the outer spacer sleeve, and the front angular contact bearing 1.6.4 is limited by the bearing cover 1.6.7 and the mounting stop, so that the front angular contact bearing 1.6.4 can bear radial load and axial load; the rear angular contact bearing 1.6.5 is arranged close to the end cover 1.6.9, and the outer wall of the rear angular contact shaft contacts with the inner wall of the main shaft sleeve 1.6.2 to realize floating support; the two rear angular contact bearings 1.6.5 are installed back to back to bear radial shear force; the vibration sensor 1.6.3 is arranged on the main shaft sleeve 1.6.2.

[0050] See also Figure 5, a cooling water channel 1.6.2.1 is provided on the spindle sleeve 1.6.2; the cooling water channel 1.6.2.1 is spirally provided along the axial direction of the spindle sleeve 1.6.2; a water inlet and a water outlet connected to a water supply system are provided on the cooling water channel 1.6.2.1; solenoid valves (not shown in the figure) are provided on the water inlet and the water outlet; a refrigerator is provided in the water supply system;

[0051] The main shaft assembly 1.6 further comprises a temperature sensor 1.6.6, and the temperature sensor 1.6.6 is arranged on the main shaft sleeve 1.6.2.

[0052] A grease injection channel (not shown in the figure) is arranged on the main shaft sleeve 1.6.2; a grease inlet for connecting to the outside is arranged on the grease injection channel, and a sealing plug is arranged on the grease inlet; a grease outlet connected to the angular contact bearing is arranged on the grease injection channel to facilitate the application of lubricating oil and other grease to the angular contact bearing.

[0053] See also Figure 4 The main shaft assembly 1.6 also includes a bearing cover 1.6.7, a mechanical seal 1.6.8 and an end cover 1.6.9; the bearing cover 1.6.7 is arranged on the main shaft single piece 1.6.1, and is located on the end of the main shaft sleeve 1.6.2 close to the grinding chamber 1.2; the mechanical seal 1.6.8 is arranged in the bearing cover 1.6.7, and is fitted with the main shaft single piece 1.6.1, on the one hand to prevent the soybean abrasive in the grinding chamber 1.2 from entering the bearing cover 1.6.7, on the other hand to prevent the grease in the bearing cover 1.6.7 from entering the grinding chamber 1.2; the end cover 1.6.9 is arranged on the main shaft single piece 1.6.1, and is located on the end of the main shaft sleeve 1.6.2 away from the grinding chamber 1.2.

[0054] See also Figure 3 and Figure 6 The soybean grinder also includes a pulping wheel 6; a hollow area is arranged on the axial direction of the dynamic grinding plate 1.4; the pulping wheel 6 is accommodated in the hollow area and is connected to the turntable 1.5; a plurality of pulping blades 6.1 are evenly arranged on the annular surface of the pulping wheel 6; a conical protrusion 6.2 is arranged on the axial direction of the pulping wheel 6, so as to facilitate dispersing soybeans to the pulping blade 6.1 area, and when the pulping wheel 6 rotates, the pulping blade 6.1 pushes the soybeans evenly and continuously into the grinding gap between the dynamic grinding plate 1.4 and the static grinding plate 1.3; the pulping blade 6.1 and the conical protrusion 6.2 are both arranged toward the feeding screw assembly 5, so as to facilitate quickly and evenly pushing the soybeans into the grinding gap between the dynamic grinding plate 1.4 and the static grinding plate 1.3;

[0055] The connection between the main shaft piece 1.6.1 and the turntable 1.5 is a conical interference fit connection. When the main shaft piece 1.6.1 rotates and transmits torque to the turntable 1.5, the conical interference fit connection can generate sufficient friction to transmit power and can also withstand loads from different directions.

[0056] See also Figure 1-Figure 2 The feeding screw assembly 5 includes a hopper 5.1, a conveying cylinder 5.2, a screw feeding rod 5.3, a mounting flange 5.4, a reducer 5.5 and a driving component 5.6 (specifically a variable frequency motor); the hopper 5.1 is arranged on the conveying cylinder 5.2 and is communicated with the conveying cylinder 5.2; the mounting flange 5.4 is arranged on one end of the conveying cylinder 5.2, and the other end of the conveying cylinder 5.2 is arranged on the grinding cover 1.1 and is communicated with the grinding chamber 1.2; the reducer 5.5 is arranged on the mounting flange 5.4; one end of the screw feeding rod 5.3 is arranged outside the mounting flange 5.4, and is connected to the output end of the driving component 5.6 through the reducer 5.5; the other end of the screw feeding rod 5.3 passes through the mounting flange 5.4 and is arranged in the conveying cylinder 5.2; a sealing ring (specifically a food-grade sealing ring) is arranged between the screw feeding rod 5.3 and the mounting flange 5.4 to prevent soybeans from flowing out.

[0057] The soybean grinder also includes a PLC controller (not shown in the figure); the main force component 2, the displacement sensor 4, the power component 3.1, the vibration sensor 1.6.3, the solenoid valve, the refrigerator, the temperature sensor 1.6.6, the reducer 5.5 and the driving component 5.6 are all connected to the PLC controller.

[0058] See also Figure 1-Figure 2 The soybean grinder also includes a mounting bracket 7; the frame assembly 1 and the main power member 2 are both arranged on the mounting bracket 7.

[0059] An application method of the soybean grinder comprises:

[0060] Step S1, the PLC controller controls the power component 3.1 to drive the worm 3.3 to rotate, and the worm 3.3 sequentially links the worm wheel 3.2, the spindle sleeve 1.6.2, the spindle unit 1.6.1, the turntable 1.5 and the dynamic grinding plate 1.4 to achieve the dynamic grinding plate 1.4 approaching the static grinding plate 1.3; the PLC controller monitors the grinding gap data between the dynamic grinding plate 1.4 and the static grinding plate 1.3 in real time through the displacement sensor 4, and accurately controls the power component 3.1 to adjust the grinding gap to the target gap (the target gap is 0.10-0.15mm, preferably 0.10mm);

[0061] Step S2, adding soybeans into the hopper 5.1, the PLC controller controls the driving component 5.6 and the reducer 5.5 to drive the spiral feed rod 5.3 to transport the soybeans to the grinding chamber 1.2; the PLC controller controls the main force component 2 to link the main shaft component 1.6.1 through the coupling, and then drives the turntable 1.5 to drive the dynamic grinding plate 1.4 and the dividing wheel 6 to rotate, and the dividing wheel 6 pushes the soybeans in the grinding chamber 1.2 to the target gap evenly and continuously, and the rotation of the dynamic grinding plate 1.4 relative to the static grinding plate 1.3 realizes sufficient grinding of the soybeans;

[0062] During the soybean grinding operation, the PLC controller obtains the grinding gap data through real-time monitoring by the displacement sensor 4, and accurately controls the power component 3.1 to adjust the grinding gap to the target gap; the PLC controller starts the refrigerator and the solenoid valve to introduce cooling water into the cooling water channel 1.6.2.1, so as to realize the circulating cooling of the spindle sleeve 1.6.2 and the spindle unit 1.6.1; the PLC controller obtains the temperature data on the spindle sleeve 1.6.2 through real-time monitoring by the temperature sensor 1.6.6. If the temperature (for example: 1. The angular contact bearing is damaged, and the temperature rises abnormally; 2. The angular contact bearing has not been lubricated for a long time, resulting in an abnormal increase in the temperature of the angular contact bearing) is higher than the warning temperature, the PLC controller issues an alarm to remind the maintenance personnel to check the soybean grinder to ensure the safe operation of the soybean grinder and avoid damage to the soybean grinder.

[0063] The PLC controller obtains the vibration amplitude data on the main shaft sleeve 1.6.2 through real-time monitoring by the vibration sensor 1.6.3. If the vibration amplitude data (for example: 1. foreign matter (metal, stone, etc.) mixed into the material causes the soybean grinder to vibrate more; 2. Angular contact bearing wear causes the soybean grinder to vibrate more) is higher than the warning vibration amplitude, the PLC controller controls the power component 3.1 to link the dynamic grinding plate 1.4 away from the static grinding plate 1.3 to avoid damage to the soybean grinder.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A soybean grinding machine, characterized in that: It comprises a frame assembly (1), a main power component (2), a knife advance and retreat drive component (3), a displacement sensor (4) and a feeding screw component (5); The frame assembly (1) comprises a grinding cover (1.1), a grinding chamber (1.2), a static grinding plate (1.3), a dynamic grinding plate (1.4), a rotating disk (1.5) and a main shaft assembly (1.6); the grinding cover (1.1) is openably arranged on one side of the grinding chamber (1.2); the main shaft assembly (1.6) is arranged on the other side of the grinding chamber (1.2); the main shaft assembly (1.6) comprises a single main shaft (1.6.1), one end of which is connected to the output end of the main power member (2) via a coupling, and the other end of which is connected to the dynamic grinding plate (1.4) via the rotating disk (1.5); the rotating disk (1.5) and the dynamic grinding plate (1.4) are both arranged in the grinding chamber (1.2); the static grinding plate (1.3) is fixedly arranged on the grinding cover (1.1) and is arranged opposite to the dynamic grinding plate (1.4); The knife advance and retreat drive member (3) is arranged on the spindle assembly (1.6), and drives the spindle assembly (1.6) to link the spindle unit (1.6.1) to drive the movable grinding plate (1.4) to approach or move away from the static grinding plate (1.3); the displacement sensor (4) is arranged on the spindle assembly (1.6); The feeding screw assembly (5) is arranged on the grinding cover (1.1) and is connected to the grinding chamber (1.2).

2. The soybean grinding machine according to claim 1, characterized in that: The tool advance and retract drive component (3) comprises a power component (3.1), a worm wheel (3.2) and a worm (3.3); the worm wheel (3.2) is sleeved on the main shaft assembly (1.6); an internal thread is arranged on the inner wall surface where the worm wheel (3.2) contacts the main shaft assembly (1.6); an external thread matching the internal thread is arranged on the outer wall surface where the main shaft assembly (1.6) contacts the worm wheel (3.2); the worm (3.3) is meshed with the outer wall surface of the worm wheel (3.2); and the output end of the power component (3.1) is connected to the worm (3.3).

3. The soybean grinding machine according to claim 2, characterized in that: The main shaft assembly (1.6) also includes a main shaft sleeve (1.6.2), an angular contact bearing and a vibration sensor (1.6.3); The main shaft sleeve (1.6.2) is sleeved on the main shaft piece (1.6.1); the worm gear (3.2) is sleeved on the main shaft sleeve (1.6.2); the external thread is arranged on the main shaft sleeve (1.6.2); the displacement sensor (4) is arranged on the main shaft sleeve (1.6.2); there are a plurality of angular contact bearings, and all of them are arranged between the main shaft sleeve (1.6.2) and the main shaft piece (1.6.1); and the vibration sensor (1.6.3) is arranged on the main shaft sleeve (1.6.2).

4. The soybean grinding machine according to claim 3, characterized in that: A cooling water channel (1.6.2.1) is provided on the spindle sleeve (1.6.2); the cooling water channel (1.6.2.1) is spirally provided along the axial direction of the spindle sleeve (1.6.2); a water inlet and a water outlet connected to a water supply system are provided on the cooling water channel (1.6.2.1); solenoid valves are provided on the water inlet and the water outlet; a refrigerator is provided in the water supply system; The main shaft assembly (1.6) further comprises a temperature sensor (1.6.6), wherein the temperature sensor (1.6.6) is arranged on the main shaft sleeve (1.6.2).

5. The soybean grinding machine according to claim 4, characterized in that: A grease injection channel is provided on the main shaft sleeve (1.6.2); a grease inlet for communicating with the outside is provided on the grease injection channel, and a sealing plug is provided on the grease inlet; a grease outlet communicating with the angular contact bearing is provided on the grease injection channel.

6. The soybean grinding machine according to claim 4, characterized in that: The main shaft assembly (1.6) further comprises a bearing cover (1.6.7), a mechanical seal (1.6.8) and an end cover (1.6.9); the bearing cover (1.6.7) is arranged on the main shaft piece (1.6.1) and is located on one end of the main shaft sleeve (1.6.2) close to the grinding chamber (1.2); the mechanical seal (1.6.8) is arranged in the bearing cover (1.6.7) and is closely fitted to the main shaft piece (1.6.1); the end cover (1.6.9) is arranged on the main shaft piece (1.6.1) and is located on one end of the main shaft sleeve (1.6.2) away from the grinding chamber (1.2).

7. The soybean grinder according to any one of claims 4 to 6, characterized in that: It also comprises a paddle wheel (6); a hollow area is arranged in the axial direction of the movable grinding plate (1.4); the paddle wheel (6) is accommodated in the hollow area and is connected to the rotating disk (1.5); a plurality of paddle blades (6.1) are arranged on the annular surface of the paddle wheel (6); a conical protrusion (6.2) is arranged in the axial direction of the paddle wheel (6); the paddle blades (6.1) and the conical protrusion (6.2) are both arranged toward the feeding screw assembly (5); The connection between the main shaft piece (1.6.1) and the turntable (1.5) is a conical interference fit connection; The dynamic grinding plate (1.4) and the static grinding plate (1.3) are both stainless steel grinding plates.

8. The soybean grinding machine according to claim 7, characterized in that The feeding screw assembly (5) comprises a hopper (5.1), a conveying cylinder (5.2), a screw feeding rod (5.3), a mounting flange (5.4), a reducer (5.5) and a driving component (5.6); the hopper (5.1) is arranged on the conveying cylinder (5.2) and is in communication with the conveying cylinder (5.2); the mounting flange (5.4) is arranged on one end of the conveying cylinder (5.2), and the other end of the conveying cylinder (5.2) is arranged on the grinding cover (1.1) and is in communication with the grinding chamber (1.6). 1.2); the reducer (5.5) is arranged on the mounting flange (5.4); one end of the screw feed rod (5.3) is arranged outside the mounting flange (5.4) and is connected to the output end of the driving component (5.6) through the reducer (5.5); the other end of the screw feed rod (5.3) passes through the mounting flange (5.4) and is arranged in the conveying cylinder (5.2); a sealing ring is arranged between the screw feed rod (5.3) and the mounting flange (5.4).

9. The soybean grinding machine according to claim 8, characterized in that It also includes a PLC controller; the main force component (2), the displacement sensor (4), the power component (3.1), the vibration sensor (1.6.3), the solenoid valve, the refrigerator, the temperature sensor (1.6.6), the reducer (5.5) and the drive component (5.6) are all connected to the PLC controller.

10. A method for using the soybean grinder according to claim 9, characterized in that: include: Step S1, the PLC controller controls the power component (3.1) to drive the worm (3.3) to rotate, and the worm (3.3) sequentially links the worm wheel (3.2), the spindle sleeve (1.6.2), the spindle unit ( 1.6.1), the rotating disk (1.5) and the moving grinding plate (1.4) to achieve the moving grinding plate (1.4) approaching the static grinding plate (1.3); the PLC controller monitors the grinding gap data between the moving grinding plate (1.4) and the static grinding plate (1.3) in real time through the displacement sensor (4), and accurately controls the power component (3.1) to adjust the grinding gap to the target gap; Step S2, adding soybeans into the hopper (5.1), the PLC controller controls the driving component (5.6) and the reducer (5.5) to drive the spiral feed rod (5.3) to transport the soybeans to the grinding chamber (1.2); the PLC controller controls the main force component (2) to link the main shaft component (1.6.1) through the coupling, thereby driving the turntable (1.5) to drive the movable grinding plate (1.4) and the dividing wheel (6) to rotate, the dividing wheel (6) pushes the soybeans in the grinding chamber (1.2) evenly and continuously into the target gap, and combines the rotational movement of the movable grinding plate (1.4) relative to the static grinding plate (1.3) to achieve sufficient grinding of the soybeans; During the soybean grinding operation, the PLC controller monitors the grinding gap data obtained in real time through the displacement sensor (4), and accurately controls the power component (3.1) to adjust the grinding gap to the target gap; the PLC controller starts the refrigerator and the solenoid valve to guide cooling water into the cooling water channel (1.6.2.1), so as to realize the circulation cooling and temperature reduction of the spindle sleeve (1.6.2) and the spindle unit (1.6.1); the PLC controller monitors the grinding gap data obtained in real time through the temperature sensor (1.6.6) The temperature data on the main shaft sleeve (1.6.2) is monitored by the PLC controller. If the temperature is higher than the warning temperature, the PLC controller issues an alarm to remind maintenance personnel to check the soybean grinder. The PLC controller obtains the vibration amplitude data on the main shaft sleeve (1.6.2) through real-time monitoring by the vibration sensor (1.6.3). If the vibration amplitude data is higher than the warning vibration amplitude, the PLC controller controls the power component (3.1) to link the dynamic grinding plate (1.4) away from the static grinding plate (1.3) to avoid damage to the soybean grinder.

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