CN216260916U

CN216260916U - Double-head rice mill

Info

Publication number: CN216260916U
Application number: CN202122277637.3U
Authority: CN
Inventors: 董俊志; 张敏; 陈思宇
Original assignee: Sichuan Xudong Manchinary Manufacturing Co ltd
Current assignee: Sichuan Xudong Manchinary Manufacturing Co ltd
Priority date: 2021-09-18
Filing date: 2021-09-18
Publication date: 2022-04-12
Anticipated expiration: 2031-09-18

Abstract

The utility model provides a double-head rice mill which is convenient for processing high-quality long-grain rice and high-quality round-grain rice, and relates to the technical field of rice mills. The double-head rice mill comprises a rack, a long-grain rice milling device, a round-grain rice milling device, a rice milling motor and a fan, which are arranged on the rack, and further comprises a variable frequency motor, a frequency converter, a first one-way transmission mechanism and a second one-way transmission mechanism; the rice milling machine is characterized in that the first one-way transmission mechanism is arranged between the first belt pulley and an output shaft of the rice milling motor, the second one-way transmission mechanism is arranged between the second belt pulley and the output shaft of the rice milling motor, the transmission directions of the first one-way transmission mechanism and the second one-way transmission mechanism are opposite, the variable frequency motor is in transmission connection with the fan, and the frequency converter is electrically connected with the variable frequency motor. The rice-discharging device is convenient to use, and meets the use requirements of farmers, particularly the farmers with higher requirements on rice-discharging quality.

Description

Double-head rice mill

Technical Field

The utility model relates to the technical field of rice mills, in particular to a double-head rice mill.

Background

The existing rice mills widely used in China are generally single-head rice mills only provided with one rice milling device, and because the single-head output is lower, the rice mills with double heads, which are provided with two parallel rice milling devices, are also adopted. The two rice milling devices of the existing double-machine-head rice mill share one fan, and the fan is driven by a rice milling motor. The existing double-machine-head rice mill mainly focuses on the rice milling efficiency.

The rice milling device comprises a rice milling shell, a rice sieve, a feed hopper and a main shaft, wherein the main shaft is arranged in the rice milling shell, a rice milling roller is arranged on the main shaft, one end of the main shaft extends out of the rice milling shell, a belt pulley is arranged at the extending end, the rice sieve is sleeved on the rice milling roller, the feed hopper is connected with the rice milling shell, and an air outlet used for being connected with an air inlet of a fan is arranged at the lower end of the rice milling shell. When the rice milling device mills rice, the rice is extruded through the rotation of the rice milling roller, the purpose of milling rice is achieved, rice bran passes through the rice sieve under the action of the fan, and flows out of the air outlet of the rice milling shell. The purpose of quickly discharging bran can be achieved by adjusting the wind power of the fan, the extrusion condition among rice grains can be adjusted, and the rice milling quality can be adjusted.

The rice has a variety of long grains and round grains, and the variety of the rice planted by farmers varies. Although the rice milling device of the existing double-head rice mill can process both long grains and round grains, the grain size of the round grains and the grain size of the long grains have certain difference, and the requirements of the round grains and the long grains on the air suction and wind power of the fan during the processing can be different. Because the existing double-head rice mill mainly focuses on the rice milling efficiency, in order to ensure the universality, the existing double-head rice mill fan can only adopt a compromise mode, is difficult to process high-quality long-grain rice and round-grain rice, and cannot meet the use requirements of farmers, particularly the farmers with higher requirements on the rice output quality.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a double-head rice mill which is convenient for processing high-quality long-grain rice and high-quality round-grain rice.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the double-head rice mill comprises a frame, and a long grain rice milling device, a round grain rice milling device, a rice milling motor and a fan which are arranged on the frame; the long grain rice milling device and the round grain rice milling device are arranged in parallel, and an air inlet of the fan is connected with the long grain rice milling device and a rice milling shell of the round grain rice milling device;

a first belt pulley for driving a main shaft of the long-grain rice milling device to rotate and a second belt pulley for driving a main shaft of the round-grain rice milling device to rotate are arranged on an output shaft of the rice milling motor, the first one-way transmission mechanism is arranged between the first belt pulley and the output shaft of the rice milling motor, the second one-way transmission mechanism is arranged between the second belt pulley and the output shaft of the rice milling motor, and the transmission directions of the first one-way transmission mechanism and the second one-way transmission mechanism are opposite;

the variable frequency motor is in transmission connection with the fan, and the frequency converter is electrically connected with the variable frequency motor.

Furthermore, the first one-way transmission mechanism and the second one-way transmission mechanism are both one-way bearings.

The air conditioner further comprises a cyclone separator, the cyclone separator is installed on the rack, and an air inlet of the cyclone separator is connected with an air outlet of the fan.

Furthermore, belt tensioning mechanisms are respectively arranged between the first belt pulley and a main shaft of the long-grain rice milling device and between the second belt pulley and a main shaft of the round-grain rice milling device, and each belt tensioning mechanism comprises a tensioning wheel, a swinging arm and a tensioning spring; one end of the swing arm is hinged to the rack, the tensioning wheel is rotatably connected with the swing arm, one end of the tensioning spring is connected with the rack, and the other end of the tensioning spring is connected with the other end of the swing arm.

Further, the feed hopper top of long grain rice milling equipment and circle grain rice milling equipment is equipped with the reciprocating sieve respectively, the reciprocating sieve passes through elastic component and frame swing joint, circle grain rice milling equipment and long grain rice milling equipment's main shaft tip is equipped with the camshaft respectively, the camshaft is connected with the one end of the reciprocating sieve that corresponds through the connecting piece respectively.

Further, one end of the connecting piece is provided with a height adjusting portion in vertical sliding fit with the vibrating screen, and the height adjusting portion is connected with a locking nut used for fixing the vibrating screen through threads.

The utility model has the beneficial effects that: the double-end rice mill disclosed by the utility model can realize function switching by only changing the motor steering without dismounting a belt, is convenient to use, and in addition, the fan is independently controlled by the variable frequency motor, and the rotating speed of the variable frequency motor can be controlled by the frequency converter, so that the fan adopts different rotating speeds when processing long-grain rice and round-grain rice.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a left side view of FIG. 1;

FIG. 3 is a schematic view of the installation of the first and second unidirectional transmissions;

FIG. 4 is an enlarged view at A in FIG. 1;

FIG. 5 is an enlarged view at B of FIG. 1;

shown in the figure: the rice milling machine comprises a frame 1, a long-grain rice milling device 2, a round-grain rice milling device 3, a rice milling motor 4, a fan 5, a variable frequency motor 6, a frequency converter 7, a first one-way transmission mechanism 8, a second one-way transmission mechanism 9, a cyclone separator 10, a belt 11, a tension spring 12, a swing arm 13, a hinge shaft 14, a tension pulley 15, a feed hopper 21, a vibrating screen 22, a main shaft 23, an elastic part 24, a cam shaft 25, a connecting part 26, a rice milling shell 27, a first belt pulley 41, a second belt pulley 42, an output shaft 43, a height adjusting part 261 and a locking nut 262.

Detailed Description

The utility model is further illustrated with reference to the following figures and examples.

As shown in fig. 1 to 3, the double-head rice mill of the utility model comprises a frame 1, and a long grain rice milling device 2, a round grain rice milling device 3, a rice milling motor 4 and a fan 5 which are arranged on the frame 1. The long grain rice milling device 2 and the round grain rice milling device 3 are arranged in parallel, and the air inlet of the fan 5 is connected with the long grain rice milling device 2 and the rice milling shell 27 of the round grain rice milling device 3. The rice mill also comprises a variable frequency motor 6, a frequency converter 7, a first one-way transmission mechanism 8 and a second one-way transmission mechanism 9. Be equipped with on the output shaft 43 of rice milling motor 4 and be used for driving long grain rice milling equipment 2's main shaft 23 pivoted first belt pulley 41 and be used for driving round grain rice milling equipment 3's main shaft 23 pivoted second belt pulley 42, first one-way drive 8 sets up first belt pulley 41 with between the output shaft 43 of rice milling motor 4 to realize the first belt pulley 41 of output shaft 43 one-way transmission. The second one-way transmission mechanism 9 is arranged between the second belt pulley 42 and the output shaft of the rice milling motor 4 so as to realize the one-way transmission of the second belt pulley 42 by the output shaft 43. The first one-way transmission mechanism 8 and the second one-way transmission mechanism 9 have opposite transmission directions. The variable frequency motor 6 is in transmission connection with the fan 5 to drive the fan 5 to rotate, and the frequency converter 7 is electrically connected with the variable frequency motor 6 to control the rotating speed of the variable frequency motor.

The connection between the frequency converter 7 and the variable frequency motor 6 in the present invention is the same as the connection between the frequency converter and the variable frequency motor in the prior art, and will not be described in detail.

Assuming that the transmission direction of the first one-way transmission mechanism 8 is clockwise, the transmission direction of the second one-way transmission mechanism 9 is counterclockwise. When long-grain rice needs to be processed, the rice is poured into the feeding hopper 21 of the long-grain rice milling device 2, the rice milling motor is controlled to rotate clockwise, the rice milling motor 4 only drives the first belt pulley 41 to rotate through the first one-way transmission mechanism 8, and the second belt pulley 42 does not rotate. The first belt pulley 41 drives the long grain rice milling device 2 to rotate, so that the processing of the long grain rice is realized. At this time, the rotating speed of the variable frequency motor 6 can be controlled through the frequency converter 7, so that the air quantity of the fan 5 is controlled, the fan 5 rotates in a rotating speed interval which is most suitable for processing long-grain rice, and thus, high-quality long-grain rice can be processed. When round grain rice needs to be processed, the rice is poured into the feeding hopper 21 of the round grain rice milling device 3, the rice milling motor is controlled to rotate anticlockwise, the rice milling motor 4 only drives the second belt pulley 42 to rotate through the second one-way transmission mechanism 9, and the first belt pulley 41 does not rotate. The second belt pulley 42 drives the round grain rice milling device 3 to rotate, so that the round grain rice is processed. At this time, the rotating speed of the variable frequency motor 6 can be controlled through the frequency converter 7, and the air quantity of the fan 5 is controlled, so that the fan 5 rotates in a rotating speed interval which is most suitable for processing round-grain rice, and thus, high-quality round-grain rice can be processed. It can be understood that the positive and negative rotation of the rice milling motor 4 can be realized by a reversing switch or a controller.

When the double-end rice mill provided by the utility model realizes function switching (processing long grains or round grains), only the motor steering needs to be changed, a belt does not need to be disassembled and assembled, and the double-end rice mill is convenient to use. In addition, the fan is controlled by the variable frequency motor independently, and the rotating speed of the variable frequency motor can be controlled through the frequency converter, so that the fan adopts different rotating speeds when processing long-grain rice and round-grain rice.

The first one-way transmission mechanism 8 and the second one-way transmission mechanism 9 can be ratchet mechanisms, one-way clutches or one-way bearings, and the like.

In order to facilitate the separation of air and bran and reduce dust pollution, the utility model also comprises a cyclone separator 10, wherein the cyclone separator 10 is arranged on the frame 1, and an air inlet of the cyclone separator 10 is connected with an air outlet of the fan 5. Therefore, the fine bran sucked out by the fan is discharged from the air outlet of the fan 5 and enters the cyclone separator 10, and the fine bran is separated under the centrifugal action of the cyclone separator 10.

The rice mill belt can become to grow in the use, can lead to belt transmission efficiency to step down or can't use, also can influence the rice milling quality. In order to solve the above problem, as shown in fig. 4, belt tensioning mechanisms are provided between the first pulley 41 and the main shaft 23 of the long-grain rice milling device 2 and between the second pulley 42 and the main shaft 23 of the round-grain rice milling device 3, respectively. The belt tensioning mechanism includes a tensioning pulley 15, a swing arm 13, and a tensioning spring 12. One end of a swing arm 13 is hinged with the machine frame 1 through a hinge shaft 14, a tension wheel 15 is rotatably connected with the swing arm 13, one end of a tension spring 12 is connected with the machine frame 1, and the other end of the tension spring is connected with the other end of the swing arm 13 to provide tension force. When the belt 11 is changed, the tension spring 12 contracts or expands, so that the swing arm 13 rotates around the hinge shaft 14, the tension wheel 15 presses the belt 11, and the belt 11 can be tensioned. Above-mentioned belt straining device can realize automatic tensioning to the belt, can improve the convenient to use nature of rice mill, guarantees the husk rice quality.

In the utility model, the vibrating screens 22 are respectively arranged above the feed hoppers 21 of the long-grain rice milling device 2 and the round-grain rice milling device 3 and are used for screening weeds, impurities and the like in rice. The vibrating screen 22 is movably connected with the frame 1 through an elastic piece 24 so as to realize the vibration, and the elastic piece 24 can reduce the impact when the vibrating screen 22 vibrates and reduce the noise of the rice mill. The end parts of the main shafts 23 of the round grain rice milling device 3 and the long grain rice milling device 2 are respectively provided with a cam shaft 25. The camshaft 25 may be integrated with the main shaft or may be separate from the main shaft. When the spindle is in a split structure, the spindle can be arranged on the spindle in a conventional mode such as bolt connection, welding and the like. The cam shafts 25 are connected to one ends of the corresponding shakers 22 by connecting members 26, respectively. The cam shafts 25 are connected to one end of the corresponding shaker 22 by means of respective connecting pieces 26, namely: the cam shaft 25 of the round grain rice milling device 3 is connected with the vibrating screen 22 above the feed hopper 21 of the round grain rice milling device 3 through a connecting piece 26, and the cam shaft 25 at the end part of the main shaft of the long grain rice milling device 2 is connected with the vibrating screen 22 above the feed hopper 21 of the long grain rice milling device 2 through a connecting piece 26. The connector 26 may be a cord, rod, or the like. When round grain rice is processed, the main shaft 23 of the round grain rice milling device 3 rotates, the main shaft 23 drives the cam shaft 25 at the end part to rotate, and the cam shaft 25 drives the vibrating screen 22 above the feed hopper 21 of the round grain rice milling device 3 to vibrate through the connecting piece 26, so that the round grain rice can be subjected to general selection and impurity removal before being milled, and the processing quality of the round grain rice by the rice milling machine can be further improved. When long-grain rice is processed, the main shaft of the long-grain rice milling device 2 rotates to drive the vibrating screen 22 above the feed hopper 21 to vibrate, and the long-grain rice can be subjected to general selection and impurity removal before milling, so that the processing quality of the rice mill on the long-grain rice can be further improved.

The elastic member 24 may be specifically a rubber band, a spring, or the like.

Due to the different weed content in the rice, the inclination angle of the vibrating screen 22 needs to be adjusted according to actual conditions. For this purpose, as shown in fig. 5, in the present invention, one end of the connecting member 26 is provided with a height adjusting part 261 which is vertically slidably fitted with the shaker 22 to adjust the height of one end of the shaker, thereby adjusting the inclination angle of the shaker 22. A lock nut 262 for fixing the shaker 22 is threadedly coupled to the height adjusting part 261. When the inclination angle of the vibrating screen 22 needs to be adjusted, after one end of the vibrating screen 22 slides downwards or upwards for a certain distance along the height adjusting part 261, the locking nut 262 is adjusted to lock the vibrating screen 22 on the height adjusting part 261.

Claims

1. The double-end rice mill comprises a rack (1), and a long grain rice milling device (2), a round grain rice milling device (3), a rice milling motor (4) and a fan (5) which are arranged on the rack (1); long grain rice milling equipment (2) and circle grain rice milling equipment (3) set up side by side, the air intake of fan (5) is connected its characterized in that with the husk rice casing of long grain rice milling equipment (2) and circle grain rice milling equipment (3): the device also comprises a variable frequency motor (6), a frequency converter (7), a first one-way transmission mechanism (8) and a second one-way transmission mechanism (9);

a first belt pulley (41) used for driving a spindle of the long-grain rice milling device (2) to rotate and a second belt pulley (42) used for driving a spindle of the round-grain rice milling device (3) to rotate are arranged on an output shaft of the rice milling motor (4), the first one-way transmission mechanism (8) is arranged between the first belt pulley (41) and the output shaft of the rice milling motor (4), the second one-way transmission mechanism (9) is arranged between the second belt pulley (42) and the output shaft of the rice milling motor (4), and the transmission directions of the first one-way transmission mechanism (8) and the second one-way transmission mechanism (9) are opposite;

the variable frequency motor (6) is in transmission connection with the fan (5), and the frequency converter (7) is electrically connected with the variable frequency motor (6).

2. The double-ended rice mill of claim 1, wherein: the first one-way transmission mechanism (8) and the second one-way transmission mechanism (9) are both one-way bearings.

3. The double-ended rice mill of claim 1, wherein: the air purifier is characterized by further comprising a cyclone separator (10), wherein the cyclone separator (10) is installed on the rack (1), and an air inlet of the cyclone separator (10) is connected with an air outlet of the fan (5).

4. The double-ended rice mill of claim 1, wherein: belt tensioning mechanisms are respectively arranged between the first belt pulley (41) and the main shaft of the long-grain rice milling device (2) and between the second belt pulley (42) and the main shaft of the round-grain rice milling device (3), and each belt tensioning mechanism comprises a tensioning wheel (15), a swinging arm (13) and a tensioning spring (12); one end of the swing arm (13) is hinged to the rack (1), the tensioning wheel (15) is rotatably connected with the swing arm (13), one end of the tensioning spring (12) is connected with the rack (1), and the other end of the tensioning spring is connected with the other end of the swing arm (13).

5. The double-ended rice mill of claim 1, wherein: the long grain rice milling equipment (2) and the feeder hopper top of circle grain rice milling equipment (3) are equipped with reciprocating sieve (22) respectively, reciprocating sieve (22) are through elastic component (24) and frame (1) swing joint, the main shaft tip of circle grain rice milling equipment (3) and long grain rice milling equipment (2) is equipped with camshaft (25) respectively, camshaft (25) are connected with the one end of the reciprocating sieve (22) that corresponds through connecting piece (26) respectively.

6. The double-ended rice mill of claim 5, wherein: one end of the connecting piece (26) is provided with a height adjusting part (261) which is in vertical sliding fit with the vibrating screen (22), and the height adjusting part (261) is connected with a locking nut (262) which is used for fixing the vibrating screen (22) in a threaded manner.