A coix seed threshing test machine

Abstract

The present invention proposes a coix threshing tester, comprising a shell, the upper half of the shell is a threshing working part, a threshing drum arranged horizontally is rotatably connected in the threshing working part, a threshing tooth is detachably connected to the side wall of the threshing drum, the threshing drum is equipped with several threshing teeth, the top of the shell is an upper semi-cylindrical top cover, a feeding port is arranged on the top cover, an observation window is arranged on the top cover, a lower semi-cylindrical screen is arranged on the lower side of the threshing drum, a vibrating screen is arranged below the screen; a receiving hopper is arranged below the vibrating screen, the hopper caliber is fixed on the inner wall of the shell around, the lower end of the receiving hopper is connected with a discharge channel extending to the outside of the shell; a variable frequency speed regulating motor is arranged below the receiving hopper, the driving end of the motor extends out of the shell, the rotating shaft of the threshing drum also extends out of the shell, and is connected to the driving end of the motor through a first transmission mechanism. The threshing method suitable for coix can be tested and then produced, thereby improving the coix threshing effect.

Description

Technical Field

[0001] The invention relates to the technical field of grain threshing research, and in particular to a coix threshing testing machine. Background Art

[0002] Threshing machinery is one of the most important machines in the harvesting process. It is the core part of thresher and grain combine harvester. It not only determines the threshing quality and productivity of the machine to a large extent, but also has a great influence on separation and cleaning. There are various threshing devices on the market, such as spike tooth type, axial flow rod tooth type, etc. Due to the differences in grain hardness and grain size, the same threshing device may not be suitable for all grains. Therefore, a test bench is urgently needed to test the threshing method that is most suitable for coix threshing. Summary of the invention

[0003] The present invention aims to at least solve the technical problems existing in the prior art, and in particular innovatively proposes a coix lacryma-jobi threshing tester, which can test the most suitable threshing method for coix lacryma-jobi.

[0004] In order to achieve the above-mentioned object of the present invention, the present invention provides a coix threshing tester, comprising a shell, the upper half of the shell is a threshing working part, a threshing drum arranged laterally is rotatably connected in the threshing working part, a threshing tooth is detachably connected to the side wall of the threshing drum, the threshing drum is equipped with several threshing teeth, the top of the shell is an upper semi-cylindrical top cover, a feeding port is provided on the top cover, an observation window is provided on the top cover, a lower semi-cylindrical screen is provided on the lower side of the threshing drum, and a cylindrical shape is formed by combining the screen and the top cover, a vibrating screen is provided below the screen, and a second transmission mechanism is provided between the vibrating screen and the threshing drum; a receiving hopper is provided below the vibrating screen, the hopper is fixed on the inner side wall of the shell around the diameter, and the lower end of the receiving hopper is connected with a discharge channel extending out of the shell; a variable frequency speed regulating motor is provided below the receiving hopper, the driving end of the motor extends out of the shell, and the rotating shaft of the threshing drum also extends out of the shell and is connected to the driving end of the motor through the first transmission mechanism.

[0005] In the above scheme: the second transmission mechanism includes a driving tooth coaxially connected to the threshing drum, a driven tooth is meshed on the lower side of the driving tooth, the vibrating screen is equipped with a driving cross bar located outside the shell, the driven tooth and the driving cross bar are connected by a connecting rod, a vibration limit hole matching the movement direction of the vibrating screen is opened on the shell, and both ends of the driving cross bar extend from the vibration limit hole into the shell and are fixedly connected to the vibrating screen.

[0006] The vibrating screen can be driven by the kinetic energy of the threshing drum, which makes the startup and shutdown more synchronized and saves electricity.

[0007] In the above scheme: the vibrating screen is rotatably connected in the housing, and the rotating shaft of the vibrating screen is parallel to the rotating shaft of the threshing drum, the rotating shaft of the vibrating screen extends outside the housing and is connected to the middle rotating point of the driving crossbar, the connecting rod is eccentrically connected to the driving crossbar, the vibration limit hole is an arc shape matching the swing curve of the vibrating screen, and the vibrating screen is provided with an arc edge, which is used to prevent the material from slipping off the edge of the vibrating screen when the vibrating screen rotates. The screening is carried out by swinging, the screening intensity is greater, and the screening efficiency is improved.

[0008] In the above scheme: a sealing film is connected between the upper end of the arc edge and the inner side wall of the shell above it, and the sealing film is used to facilitate the coix seeds to fall from the screen onto the vibrating screen, further preventing the coix seeds from falling out of the gap between the vibrating screen and the shell, thereby improving the screening efficiency.

[0009] In the above scheme: the vibrating screen is also equipped with a pressure rod, which is located on the side of the sealing film close to the shell, and the sealing film is always pressed within the arc edge by the pressure rod.

[0010] The pressure rod is used to prevent the sealing film from getting stuck between the vibrating screen and the shell. By setting the pressure rod, the sealing film is prevented from getting stuck between the vibrating screen and the shell. At the same time, the pressure rod makes the sealing film in a straight state most of the time, which is convenient for grains to fall on the vibrating screen, improves the screening efficiency, and can more intuitively see the threshing effect, obtain research results faster, and it is easier to study a threshing method suitable for coix.

[0011] In the above scheme: the arc surrounding edge is provided with an anti-drop hook for preventing the pressure rod from falling out of the vibrating screen.

[0012] In the above scheme: the threshing teeth include three types: rigid teeth, flexible teeth and rigid-flexible combined teeth. Three threshing teeth with different threshing strengths are provided for threshing tests. Three tooth shapes with different threshing strengths are provided. The threshing of coix can be studied according to the three tooth shapes. The threshing can also be carried out for crops with different hardness (such as rice, wheat, etc.) to study the most suitable combination.

[0013] In the above scheme: the threshing drum is formed by splicing at least two arc cylinders, and the threshing drum is provided with mounting holes corresponding to the threshing teeth;

[0014] The bottom end of the rigid tooth is provided with a bolt, and when installing, the bolt is extended into the threshing drum and fixed by a nut;

[0015] The flexible teeth are made of rubber material, and a skirt is provided at the bottom. When installing, the flexible teeth are extended from the installation hole to the outside of the threshing drum, and then the skirt is fixed by fixing bolts;

[0016] The rigid-flexible combination teeth are rigid teeth with a rubber sleeve wrapped outside and a skirt provided at the bottom. During installation, the rigid-flexible combination teeth are extended from the installation hole to the outside of the threshing drum, and then the skirt is fixed by fixing bolts.

[0017] In the above scheme: a fan is also provided below the receiving hopper, and the air outlet end of the fan extends into the receiving hopper, and the waste material and / or coix husk are blown away by the fan.

[0018] In the above scheme: a third transmission mechanism is provided between the rotating shaft of the fan blade and the driving shaft of the motor, and both the first transmission mechanism and the third transmission mechanism are belt transmission mechanisms. The fan is driven by the motor to rotate, thereby further improving the synchronization of starting or shutting down various components of the equipment.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0020] 1. This design is intended to study the effects of three different threshing teeth on coix threshing, and to find the optimal combination of threshing tooth structure and centrifugal speed by combining the centrifugal speed of different threshing drums, so as to solve the problem of how to improve the impurity rate and breakage rate during the harvest of coix. By adjusting the ratio of various tooth shapes and motor rotation speeds, the threshing effect can be improved, the research results can be obtained faster, and it is easier to study a threshing method suitable for coix before production.

[0021] 2. Only one power device is needed to drive all components to work, saving energy. The startup and shutdown are synchronized, which will not cause energy consumption. It can also reduce the number of switches, avoid missed opening or closing, improve test efficiency, and further improve energy saving effects.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 is a schematic structural diagram of Embodiment 1 of the present invention;

[0025] Figure 2 yes Figure 1 Left view of

[0026] Figure 3 It is the running track diagram of coix lachryma-jobi of the present invention;

[0027] Figure 4 Schematic diagram of a threshing drum with rigid teeth installed in the present invention;

[0028] Figure 5 yes Figure 4 Installation diagram of medium rigid teeth;

[0029] Figure 6 It is a schematic diagram of a threshing drum equipped with flexible teeth according to the present invention;

[0030] Figure 7 yes Figure 6 Installation diagram of the flexible teeth;

[0031] Figure 8 It is a schematic diagram of a threshing drum equipped with rigid-flexible combined teeth according to the present invention;

[0032] Fig. 9 Yes Yes Figure 8 Installation diagram of the rigid-flexible combination teeth;

[0033] Fig.10 It is a left side view of the second embodiment;

[0034] Fig.11 yes Fig.10 A magnified schematic diagram of center A. DETAILED DESCRIPTION

[0035] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0036] Embodiment 1

[0037] like Figure 1-Figure 9As shown, a coix threshing test machine includes a shell 1, and the upper half of the shell 1 is a threshing working part. A threshing drum 3 arranged horizontally is rotatably connected in the threshing working part, and a threshing tooth 3a is detachably connected to the side wall of the threshing drum 3. Preferably, the threshing tooth 3a has a backward tilt angle of 10° to 15° or is installed on the threshing drum 3 at a backward tilt angle to prevent grass from hanging. The threshing drum 3 is equipped with three types of threshing teeth 3a, namely rigid teeth, flexible teeth and rigid-flexible combined teeth. The top of the shell 1 is an upper semi-cylindrical top cover 2. A feeding port is provided on the top cover 2, and a waste outlet 1a is provided on the shell 1. An observation window is provided on the top cover 2, and the observation window is used to shoot the movement path of grains through a high-speed camera. An inclined guide plate 2a is provided on the inner side wall of the top cover 2, and the guide plate 2a is in the shape of a small waist with wide ends at the upper and lower ends and gradually thinning in the middle. The guide plate 2a provided can allow the grain to move along the axis direction of the threshing drum 3, avoid accumulation at the feeding port, avoid affecting the threshing effect, and enable the grain to be evenly distributed in the threshing working part. Among them, the guide plate 2a is installed on the inner side wall of the rear half of the top cover 2, and the threshing drum 3 rotates counterclockwise from the left view direction; or, the guide plate 2a is installed on the inner side wall of the front half of the top cover 2, and the threshing drum 3 rotates clockwise from the left view direction. The lower side of the threshing drum 3 is provided with a lower semi-cylindrical screen 4, and the screen 4 and the top cover 2 are combined to form a cylindrical shape. When the threshing drum 3 rotates, the grain ear branches that fall on the screen 4 will be turned up by the threshing teeth 3a. When the grain ear branches move to the highest point, they will fall on the guide plate 2a and slide downward. Since the guide plate 2a is inclined, the grain ear branches will produce displacement in the left and right directions when they slide, so the grain ear branches move from one side of the threshing roller 3 to the other side, avoiding the grain ear branches from accumulating at the feeding port.

[0038] A vibrating screen 5 is provided below the screen 4, and a second transmission mechanism is provided between the vibrating screen 5 and the threshing drum 3, so that the vibrating screen 5 and the threshing drum 3 are linked to each other through the second transmission mechanism. A receiving hopper 6 is provided below the vibrating screen 5, and the diameter of the receiving hopper 6 is fixed on the inner wall of the shell 1, and the lower end of the receiving hopper 6 is connected to a discharge channel 6a extending to the outside of the shell 1. A variable frequency speed regulating motor 7 is provided below the receiving hopper 6, and the driving end of the motor 7 extends out of the shell 1. The rotating shaft of the threshing drum 3 also extends out of the shell 1, and is connected to the driving end of the motor 7 through the first transmission mechanism 9.

[0039] Among them, the second transmission mechanism includes a driving tooth 10a coaxially connected to the threshing drum 3, and a driven tooth 10b is meshed on the lower side of the driving tooth 10a. The vibrating screen 5 is equipped with a driving cross bar 10d located on the outside of the shell 1. The driven tooth 10b and the driving cross bar 10d are connected by a connecting rod 10c. A vibration limit hole 10e matching the movement direction of the vibrating screen 5 is opened on the shell 1, and both ends of the driving cross bar 10d extend from the vibration limit hole 10e into the shell 1 and are fixedly connected to the vibrating screen 5.

[0040] Preferably, the threshing drum 3 is formed by splicing at least two arc cylinders, and the threshing drum 3 is provided with mounting holes corresponding to the threshing teeth 3a, and the threshing teeth 3a extend from the threshing drum 3 and are fixedly installed.

[0041] Specifically, a bolt is provided at the bottom end of the rigid tooth. During installation, the bolt is extended into the threshing drum 3 and fixed by a nut.

[0042] The flexible teeth are made of rubber material, and a skirt is provided at the bottom. When installing, the flexible teeth are extended from the mounting hole to the outside of the threshing drum 3, and then the skirt is fixed by fixing bolts. Since the flexible teeth are made of rubber material, they are more flexible than rigid teeth and can reduce the breakage rate.

[0043] The rigid-flexible combination teeth are rigid teeth with a rubber sleeve wrapped outside and a skirt at the bottom. When installing, the rigid-flexible combination teeth are extended from the installation hole to the outside of the threshing drum 3, and then the skirt is fixed by fixing bolts. The rigid-flexible combination teeth can ensure the strength of the threshing teeth and are not easy to be damaged, and can also reduce the impact on the coix seeds during the threshing process and reduce the breakage rate.

[0044] The optimal threshing method for coix was found through experiments with three different threshing teeth to minimize the impurity content and breakage rate after threshing and improve the threshing efficiency of coix.

[0045] During use, it can be adjusted according to the particle content on the ear branch. For example, if the ear branch is harvested late, the coix seeds are more mature and easy to fall off, flexible teeth or a combination of rigid and flexible teeth can be used to formulate a coix seed threshing method that is more suitable for more mature coix seeds.

[0046] Even three kinds of teeth can be set on the same threshing drum 3, and flexible teeth, rigid-flexible teeth and rigid teeth are arranged in sequence from the feeding port to the discharging port. Since there are more coix seeds on the ear branch when the ear branch is fed into the shell, threshing is mainly aimed at the ear branch to avoid the crushing of the ear branch. After feeding for a period of time, a part of the ear branch has fallen off, and the ear branch that is still retained may not fall off easily, so it is necessary to increase the threshing strength, that is, threshing is performed by rigid-flexible teeth. After a period of time, the ear branch that is still retained is very difficult to fall off, so it is necessary to further strengthen the threshing strength, that is, threshing is performed by rigid teeth. At the same time, most of the ear branch waste is broken when threshing, which is convenient for discharging from the shell.

[0047] Of course, the proportion of flexible teeth can also be adjusted according to actual conditions, for example, the flexible teeth occupy 40% of the area of ​​the side wall of the threshing drum 3, the rigid-flexible teeth occupy 35%, and the rigid teeth occupy 25%. Preferably, two tooth shapes are staggered at the junction of the three tooth distributions to form a transition, so as to reflect the intention of gradually strengthening the threshing intensity.

[0048] Preferably, a fan 8 is further provided below the receiving hopper 6, and an air outlet end of the fan 8 extends into the receiving hopper 6, so that the waste material and / or coix husk is blown away by the fan 8.

[0049] Preferably, a third transmission mechanism 11 is provided between the rotating shaft of the blades of the fan 8 and the driving shaft of the motor 7, and both the first transmission mechanism 9 and the third transmission mechanism 11 are belt transmission mechanisms.

[0050] Embodiment 2

[0051] like Figure 10-11 As shown, the difference between this embodiment and the first embodiment is that the vibration screen 5 is rotatably connected in the housing 1, and the rotating shaft of the vibration screen 5 is parallel to the rotating shaft of the threshing drum 3, the rotating shaft of the vibration screen 5 extends outside the housing 1, and is connected to the middle rotating point of the driving cross bar 10d, the connecting rod 10c is eccentrically connected to the driving cross bar 10d, the vibration limit hole 10e is an arc shape matching the swing curve of the vibration screen 5, and the vibration screen 5 is provided with an arc edge 5a, which is used to prevent the material from sliding off the edge of the vibration screen 5 when the vibration screen 5 rotates. The grain is screened by swinging, and the action amplitude is large, which is convenient for screening.

[0052] A sealing film 5d is connected between the upper end of the arc edge 5a and the inner wall of the shell 1 located above it, and the sealing film 5d is used to facilitate the coix seeds to fall from the screen 4 to the vibrating screen 5.

[0053] The vibrating screen 5 is also equipped with a pressure rod 5b, which is located on the side of the sealing film 5d close to the housing 1, and the sealing film 5d is always pressed into the arc edge 5a by the pressure rod 5b. Preferably, the arc edge 5a is provided with an anti-drop hook 5c for preventing the pressure rod 5b from falling out of the vibrating screen 5.

[0054] The pressure rod 5b is used to prevent the sealing film 5d from being stuck between the vibrating screen 5 and the housing 1; at the same time, the pressure rod also makes the sealing film 5d in a stretched state most of the time, which facilitates the grains to fall onto the vibrating screen 5 and improves the screening efficiency.

[0055] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A coix threshing test machine, comprising a housing (1), wherein the upper half of the housing (1) is a threshing working part, and a threshing drum (3) arranged transversely is rotatably connected to the threshing working part, characterized in that: The threshing drum (3) has threshing teeth (3a) detachably connected to the side wall thereof. The threshing drum (3) is equipped with a plurality of threshing teeth (3a). The top of the housing (1) is an upper semi-cylindrical top cover (2). The top cover (2) is provided with a feeding port. The top cover (2) is provided with an observation window. A lower semi-cylindrical screen (4) is provided on the lower side of the threshing drum (3). The screen (4) and the top cover (2) are combined to form a cylindrical shape. A vibrating screen (5) is provided below the screen (4). The vibrating screen (5) is connected to the threshing drum (3). ) is provided between the housing (1); a receiving hopper (6) is provided below the vibrating screen (5); the hopper (6) is fixed on the inner wall of the housing (1) around its diameter; the lower end of the receiving hopper (6) is connected to a discharge channel (6a) extending to the outside of the housing (1); a variable frequency speed regulating motor (7) is provided below the receiving hopper (6); the driving end of the motor (7) extends out of the housing (1); the rotating shaft of the threshing drum (3) also extends out of the housing (1) and is connected to the driving end of the motor (7) via the first transmission mechanism (9); The second transmission mechanism comprises a driving tooth (10a) coaxially connected to the threshing drum (3), a driven tooth (10b) meshing on the lower side of the driving tooth (10a), the vibrating screen (5) being provided with a driving cross bar (10d) located outside the housing (1), the driven tooth (10b) and the driving cross bar (10d) being connected via a connecting rod (10c), a vibration limiting hole (10e) matching the movement direction of the vibrating screen (5) being provided on the housing (1), and two ends of the driving cross bar (10d) extending from the vibration limiting hole (10e) into the housing (1) to be fixedly connected to the vibrating screen (5); The vibrating screen (5) is rotatably connected in the housing (1), and the rotating shaft of the vibrating screen (5) is parallel to the rotating shaft of the threshing drum (3). The rotating shaft of the vibrating screen (5) extends outside the housing (1) and is connected to the middle rotating point of the driving cross bar (10d). The connecting rod (10c) is eccentrically connected to the driving cross bar (10d). The vibration limit hole (10e) is in an arc shape that matches the swing curve of the vibrating screen (5). The vibrating screen (5) is provided with an arc edge (5a), and the arc edge (5a) is used to prevent materials from sliding off the edge of the vibrating screen (5) when the vibrating screen (5) rotates. The threshing teeth (3a) include three types: rigid teeth, flexible teeth and rigid-flexible combined teeth; A fan (8) is also provided below the receiving hopper (6), and an air outlet end of the fan (8) extends into the receiving hopper (6), so that waste materials and / or coix husks are blown away by the fan (8).

2. The coix seed threshing test machine according to claim 1, characterized in that: A sealing film (5d) is connected between the upper end of the circular arc edge (5a) and the inner wall of the shell (1) located above the circular arc edge, and the sealing film (5d) is used to facilitate the coix seeds to fall from the screen (4) onto the vibrating screen (5).

3. The coix seed threshing tester according to claim 2, characterized in that: The vibrating screen (5) is further equipped with a pressure rod (5b), which is located on the side of the sealing film (5d) close to the shell (1), and the sealing film (5d) is always pressed within the circular arc edge (5a) by the pressure rod (5b).

4. The coix seed threshing tester according to claim 3, characterized in that: The arc edge (5a) is provided with an anti-drop hook (5c) for preventing the pressure rod (5b) from falling out of the vibrating screen (5).

5. The coix seed threshing tester according to claim 1, characterized in that: The threshing drum (3) is formed by splicing at least two arc cylinders, and the threshing drum (3) is provided with mounting holes corresponding to the threshing teeth (3a); A bolt is provided at the bottom end of the rigid tooth. During installation, the bolt is extended into the threshing drum (3) and fixed by a nut. The flexible teeth are made of rubber material and are provided with a skirt at the bottom. During installation, the flexible teeth are extended from the installation hole to the outside of the threshing drum (3), and then the skirt is fixed by fixing bolts; The rigid-flexible combination teeth are rigid teeth with a rubber sleeve wrapped around the outside and a skirt provided at the bottom. During installation, the rigid-flexible combination teeth are extended from the installation hole to the outside of the threshing drum (3), and the skirt is then fixed by fixing bolts.

6. The coix seed threshing testing machine according to claim 1, characterized in that: A third transmission mechanism (11) is provided between the rotating shaft of the fan (8) blades and the driving shaft of the motor (7), and both the first transmission mechanism (9) and the third transmission mechanism (11) are belt transmission mechanisms.

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