Flour mill and roll clearance adjusting mechanism

Abstract

The utility model provides a flour mill and a roll clearance adjusting mechanism. The roll clearance adjusting mechanism comprises a power component, an adjusting shaft and an adjusting arm, wherein the adjusting shaft is in transmission connection with the power part through a transmission part, and is driven by the power part to rotate; one end of the adjusting arm is axially mounted on the adjusting shaft in a sliding manner, and the other end of the adjusting arm is mounted on one of the two rollers, so that the two rollers are pushed to be close to or far away from each other when the adjusting shaft rotates. By means of the roll clearance adjusting mechanism, automatic adjustment of the roll clearance is achieved, the working intensity of operators is reduced, the working efficiency is improved, the accuracy rate of roll clearance adjustment is high, and then the yield and quality of agricultural product grinding are guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of agricultural machinery, in particular to a grinding machine and a rolling distance adjusting mechanism. Background Art

[0002] In the process of agricultural product processing, wheat, rice, corn and other agricultural products are mostly processed into powder through grinding mills. The roller is an important structure of the grinding mill. The agricultural products are ground by the rotation of two rollers. The distance between the roller surfaces is the rolling distance. The size of the rolling distance will affect the particle size and yield of the ground powder, and will also affect the power consumption of the grinding mill.

[0003] In the prior art, most grinding mills use a manual adjustment method of a mechanical hand wheel to adjust the rolling distance. During the adjustment process, the operator is required to manually turn the mechanical hand wheel, which results in high workload and low work efficiency for the operator. In addition, due to the limitation of the operator's experience, the accuracy of the rolling distance adjustment is poor, and the output and quality of agricultural product grinding cannot be guaranteed. Utility Model Content

[0004] In view of this, the utility model provides a grinding mill and a rolling distance adjustment mechanism, which at least partially solve the problems existing in the prior art.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] The utility model provides a rolling distance adjustment mechanism, the rolling distance adjustment mechanism comprising:

[0007] Power components;

[0008] An adjusting shaft, the adjusting shaft is connected to the power component through a transmission member and rotates under the drive of the power component;

[0009] An adjusting arm, one end of which is axially slidably mounted on the adjusting shaft, and the other end of which is mounted on one of the rollers so as to push the roller closer or farther away when the adjusting shaft rotates.

[0010] In some embodiments, the power component is a motor, and the output shaft of the motor outputs a preset rotation stroke.

[0011] In some embodiments, the motor is a stepper motor or a servo motor, and a power-off brake is installed on the motor or the adjustment handle.

[0012] In some embodiments, the transmission belt cooperates with the output shaft of the motor and the adjustment shaft respectively, so that the adjustment shaft is transmission-connected with the motor.

[0013] In some embodiments, it also includes:

[0014] A slider, one end of the adjusting arm is installed on the slider, the slider is sleeved on the adjusting shaft, and the slider is threadedly matched with the adjusting shaft so that the slider is driven to move axially when the adjusting shaft rotates.

[0015] In some embodiments, the rolling distance adjustment mechanism includes:

[0016] A pen-touch sensor is installed on the adjusting shaft and is used to obtain the current rolling distance between the two rollers in real time.

[0017] The utility model also provides a grinding machine, comprising:

[0018] A silo, in which at least two rollers and the above-mentioned rolling distance adjustment mechanism are installed;

[0019] A screening device, wherein the feed port of the screening device is connected to the discharge port of the silo.

[0020] The rolling distance adjustment mechanism provided by the utility model is used for a grinding mill, wherein the grinding mill comprises at least two rolling rollers, and the rolling distance adjustment mechanism comprises a power component, an adjustment shaft, an adjustment arm and a control device; wherein the adjustment shaft is connected to the power component through a transmission member, and rotates under the drive of the power component; one end of the adjustment arm is axially slidably mounted on the adjustment shaft, and the other end of the adjustment arm is mounted on one of the two rolling rollers, so as to push the two rolling rollers closer or farther away when the adjustment shaft rotates; and the control device is used to control the power component to drive the adjustment shaft to rotate.

[0021] During operation, when the rolling distance needs to be reduced, the driving power component starts and drives the adjustment shaft to rotate in the first direction, thereby driving the adjustment arm to swing so that the two rollers are close together; when the rolling distance needs to be increased, the control device drives the power component to start and drives the adjustment shaft to rotate in the second direction, thereby driving the adjustment arm to swing in the opposite direction so that the two rollers are separated. In this way, the rolling distance adjustment mechanism realizes automatic adjustment of the rolling distance, and the operator does not need to manually turn the mechanical hand wheel during the adjustment process, which reduces the operator's work intensity and improves work efficiency. The adjustment result is not limited by the operator's experience, and the accuracy of the rolling distance adjustment is high, thereby ensuring the yield and quality of agricultural product grinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 This is one of the structural schematic diagrams of the rolling distance adjustment mechanism provided by the utility model;

[0024] Figure 2 This is the second structural schematic diagram of the rolling distance adjustment mechanism provided by the utility model;

[0025] Figure 3 The third structural schematic diagram of the rolling distance adjustment mechanism provided by the utility model;

[0026] Figure 4 This is the fourth structural schematic diagram of the rolling distance adjustment mechanism provided by the utility model;

[0027] Figure 5 This is the fifth structural diagram of the rolling distance adjustment mechanism provided by the utility model;

[0028] Figure 6 This is one of the structural schematic diagrams of the screening equipment provided by the utility model;

[0029] Figure 7 This is the second structural schematic diagram of the screening equipment provided by the utility model.

[0030] Description of reference numerals:

[0031] 1-motor, 2-adjusting shaft, 3-adjusting arm, 4-transmission belt, 5-slider, 6-pen touch sensor;

[0032] 7-roller, 8-silo;

[0033] 101-suction hopper, 102-fixed container, 103-screening plate, 104-feeding bin, 105-valve motor. DETAILED DESCRIPTION

[0034] The embodiments of the utility model are described in detail below with reference to the accompanying drawings.

[0035] It should be noted that the following embodiments and features in the embodiments may be combined with each other in the absence of conflict; and, based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without making any creative work are within the scope of protection of the present disclosure.

[0036] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein may be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present disclosure, it should be understood by those skilled in the art that an aspect described herein may be implemented independently of any other aspect, and two or more of these aspects may be combined in various ways. For example, any number of aspects described herein may be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein may be used to implement this device and / or practice this method.

[0037] Please refer to Figure 1-Figure 5 In a specific embodiment, the rolling distance adjustment mechanism provided by the utility model is used for a mill, and the mill includes at least two rolling rollers 7. During operation, the mill grinds crops such as wheat and corn through the movement of the two rolling rollers 7. The rolling distance adjustment mechanism includes a power component, an adjustment shaft, and two adjustment arms 3.

[0038] It should be understood that the degree of grinding refers to the scraping rate and the powder extraction rate, and the rolling distance adjustment mechanism can be used for the rolling distance adjustment in the scraping rate detection disclosure or the rolling distance adjustment under the powder extraction rate detection working condition. The scraping rate refers to the percentage of the weight of the material passing through the coarse screen after a certain grinding process; the powder extraction rate refers to the percentage of the weight of the material passing through the powder screen after each grinding system is ground. The determination and calculation method is the same as the scraping rate.

[0039] The power component drives the adjustment shaft 2 to rotate clockwise or counterclockwise. The rolling distance between the two rollers 7 is data obtained by real-time measurement, and the rolling distance target value is data set according to the type of agricultural products to be ground and the purpose of the finished product. Specifically, the rolling distance between the rollers 7 can be collected by a pen-touch sensor 6, and the pen-touch sensor 6 can be installed on the adjustment shaft 2 or on the adjustment arm 3. In actual use scenarios, it is not limited to using the pen-touch sensor 6 as a rolling distance collection device, and other sensors that can measure distance can also be used to realize rolling distance collection, such as photoelectric sensors.

[0040] The power component starts or shuts down in response to the control command of the control device, and at the start, it drives the adjustment shaft 2 to move clockwise or counterclockwise by adjusting parameters such as working time and power output direction. In order to facilitate the control of the adjustment accuracy of the rolling distance and facilitate automatic control, the power component is preferably a motor 1. Obviously, the motor 1 is a motor 1 that can rotate forward and reverse. The motor 1 can specifically be a stepper motor 1 or a servo motor 1. The motor 1 starts and stops in response to the control command, and the output shaft of the motor 1 outputs a preset rotation stroke according to the control command. A power-off brake is installed on the motor 1 to stop the action in time when the motor 1 is powered off. Theoretically, the power component can provide rotational power for the adjustment shaft 2, for example, it can also be a motor.

[0041] In a specific usage scenario, taking the stepper motor 1 as an example, the rolling distance needs to be adjusted to make the two rollers 7 approach each other. After the stepper motor 1 receives the control instruction, it enters the working state according to the startup instruction, working time and / or number of rotations carried by the preset strategy. The output shaft of the stepper motor 1 rotates to drive the adjustment shaft 2 to rotate clockwise, and the adjustment arm 3 is used to drive the roller 7 where it is located to approach the other roller 7. Conversely, the rolling distance needs to be adjusted to make the two rollers 7 move away from each other. After the stepper motor 1 receives the control instruction, it enters the working state according to the startup instruction, working time and / or number of rotations carried by the preset strategy. The output shaft of the stepper motor 1 rotates to drive the adjustment shaft 2 to rotate counterclockwise, and the adjustment arm 3 is used to drive the roller where it is located away from the other roller.

[0042] The above-mentioned adjustment shaft 2 is connected to the power component through a transmission member, and rotates under the drive of the power component. Since the distance between the rollers 7 is a variable value, in order to avoid jamming during transmission and ensure transmission accuracy, the transmission member is preferably a transmission belt 4, and the transmission belt 4 is respectively matched with the output shaft of the motor 1 and the adjustment shaft 2, so that the adjustment shaft 2 is connected to the motor 1. Specifically, the transmission belt 4 includes a first pulley, a second pulley and a conveyor belt, wherein the first pulley is installed on the output shaft of the stepper motor 1 through a bearing and rotates synchronously with the output shaft, and the second pulley is installed on the adjustment shaft 2 through a bearing. When the first pulley rotates, the movement of the conveyor belt drives the second pulley to rotate, thereby driving the adjustment shaft 2 to rotate. Theoretically, when only considering avoiding jamming, a transmission chain can also be used as a transmission member.

[0043] One end of the adjusting arm 3 is axially slidably mounted on the adjusting shaft 2, and the other end of the adjusting arm 3 is mounted on one of the two rollers 7 so as to push the two rollers 7 closer or farther when the adjusting shaft 2 rotates. Figure 5As shown, the adjusting arm 3 can be installed on the adjusting shaft 2 through the slider 5, and the other end of the adjusting arm 3 can be fixed on one of the two rollers 7 through a flange. One end of the adjusting arm 3 is installed on the slider 5, and the slider 5 is sleeved on the adjusting shaft 2. The slider 5 is threadedly matched with the adjusting shaft 2, so that when the adjusting shaft 2 rotates, the slider 5 is driven to move axially, thereby driving the adjusting arm 3 to swing, so as to adjust the distance between the two rollers 7 by pushing and pulling.

[0044] In the above specific embodiment, the rolling distance adjustment mechanism provided by the utility model is used for a grinding mill, and the grinding mill includes at least two rolling rollers 7. The rolling distance adjustment mechanism includes a power component, an adjustment shaft 2, an adjustment arm 3 and a control device; wherein the adjustment shaft 2 is connected to the power component through a transmission member, and rotates under the drive of the power component; one end of the adjustment arm 3 is axially slidably mounted on the adjustment shaft 2, and the other end of the adjustment arm 3 is mounted on one of the two rolling rollers 7, so as to push the two rolling rollers 7 closer or farther when the adjustment shaft 2 rotates.

[0045] During operation, when the rolling distance needs to be adjusted closer, the control device drives the power component to start and drives the adjustment shaft 2 to rotate in the first direction, thereby driving the adjustment arm 3 to swing so that the two rollers 7 are close together; when the rolling distance needs to be adjusted farther, the control device drives the power component to start and drives the adjustment shaft 2 to rotate in the second direction, thereby driving the adjustment arm 3 to swing in the opposite direction so that the two rollers 7 are farther away. In this way, the rolling distance adjustment mechanism realizes automatic adjustment of the rolling distance, and the operator does not need to manually turn the mechanical hand wheel during the adjustment process, which reduces the operator's work intensity and improves work efficiency. The adjustment result is not limited by the operator's experience, and the accuracy of the rolling distance adjustment is high, thereby ensuring the yield and quality of agricultural product grinding.

[0046] In addition to the above-mentioned rolling distance adjustment mechanism, the utility model also provides a grinding mill including the rolling distance adjustment mechanism, which also includes a silo 8 and a screening device, wherein at least two rollers 7 and the rolling distance adjustment mechanism as described above are installed in the silo 8; the feed port of the screening device is connected to the discharge port of the silo 8, the screening device is signal-connected to the control device of the rolling distance adjustment mechanism, and the calculated scraping rate is fed back to the control device, and the screening device can automatically screen the ground material and automatically calculate the scraping rate.

[0047] Specifically, Figure 6 and Figure 7As shown, the screening equipment includes a suction hopper 101 connected to the discharge port of the above-mentioned silo, a fixed container 102, a screening disc 103 and a discharge bin 104. The fixed container has a valve, and the valve is opened and closed by the control of a valve motor 105. It should be understood that the screening equipment can realize automatic screening of materials and automatic calculation of the scraping rate. Its specific working principle is the same as that of the prior art and will not be described in detail. When the grinding is completed, the valve of the fixed container is closed, and the pneumatic bucket is operated to take the material from the pipeline between the silo and the suction hopper. After the material is taken, the valve of the fixed container is opened to discharge the material. Then open the air shutoff valve and close the valve of the suction hopper, start the fan, suck the material into the suction hopper, run for a preset time (for example, 40 seconds), and then close the fan and air shutoff valve; after the feeding is completed, start the screening, open the valve of the suction hopper at the same time, put the material into the screening plate for screening, and calculate the scraping rate after the screening is completed. The scraping rate can be transmitted to the above-mentioned control device as a reference data for rolling adjustment. In addition to the technical effect of the above-mentioned rolling adjustment mechanism, the mill can also automatically calculate the scraping rate through the screening equipment, thereby providing data support for fine adjustment of the rolling distance.

[0048] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A rolling distance adjustment mechanism, characterized in that: The rolling distance adjustment mechanism comprises: Power components; An adjusting shaft (2), the adjusting shaft (2) being connected to the power component via a transmission member and rotating under the drive of the power component; An adjusting arm (3), one end of which is axially slidably mounted on the adjusting shaft (2), and the other end of which is mounted on one of the two rollers (7) so as to push the roller (7) closer or farther away when the adjusting shaft (2) rotates.

2. The rolling distance adjustment mechanism according to claim 1, characterized in that: The power component is a motor (1), and the output shaft of the motor (1) outputs a preset rotation stroke.

3. The rolling distance adjustment mechanism according to claim 2, characterized in that: The motor (1) is a stepper motor (1) or a servo motor (1), and a power-off brake is installed on the motor (1) or on the adjustment handle.

4. The rolling distance adjustment mechanism according to claim 3, characterized in that: The transmission member is a transmission belt (4), and the transmission belt (4) is respectively matched with the output shaft of the motor (1) and the adjustment shaft (2), so that the adjustment shaft (2) is transmission-connected with the motor (1).

5. The rolling distance adjustment mechanism according to claim 1, characterized in that: Also includes: A slider (5), one end of the adjusting arm (3) is mounted on the slider (5), the slider (5) is sleeved on the adjusting shaft (2), and the slider (5) is threadedly matched with the adjusting shaft (2) so that the adjusting shaft (2) drives the slider (5) to move axially when rotating.

6. The rolling distance adjustment mechanism according to claim 1, characterized in that: The rolling distance adjustment mechanism comprises: A pen-touch sensor (6), the pen-touch sensor (6) is mounted on the adjustment shaft (2) and is used to obtain the current rolling distance between the two rollers (7) in real time.

7. A grinding machine, characterized in that: include: A silo (8), wherein at least two rollers (7) and a rolling distance adjustment mechanism according to any one of claims 1 to 6 are installed in the silo (8); A screening device, wherein the feed inlet of the screening device is connected to the discharge outlet of the silo (8).

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