A seed threshing device for elephant grass

Abstract

This invention relates to an elephant grass seed threshing device, comprising a frame, a storage device, a feeding device, a threshing device, a dehulling device, and a screening device. The threshing device includes a support, a threshing mechanism, and a threshing conveying mechanism. The threshing mechanism includes threshing rollers arranged vertically and a threshing drive mechanism. Multiple sets of threshing components are arranged on the threshing rollers. The threshing components on the upper and lower threshing rollers are staggered. When the feeding device delivers elephant grass inflorescences into the threshing device, the bottom of the inflorescence passes through the threshing mechanism first and then enters the threshing conveying mechanism. The threshing conveying mechanism includes conveying rollers arranged vertically and a threshing conveying drive mechanism, wherein the linear velocity of the conveying rollers is greater than the linear velocity of the threshing rollers. This elephant grass seed threshing device can automatically thresh elephant grass seeds, achieving a higher degree of automation.

Description

Technical Field

[0001] This invention relates to a seed threshing device, specifically to an elephant grass seed threshing device. Background Technology

[0002] Elephant grass (see Figure 10 Elephant grass belongs to the genus *Pennisetum*, with major varieties including Guimu No. 1 hybrid elephant grass, Dehong elephant grass, Taiwan sweet elephant grass, and South China elephant grass. Native to Africa, elephant grass is a perennial, high-yielding forage grass widely cultivated in tropical and subtropical regions. In the 1930s, it was introduced to my country from India and Myanmar for trial planting in Guangdong, Guangxi, Hainan, Yunnan, and Sichuan provinces. By the 1980s, it had been promoted to cultivation in Guangdong, Guangxi, Hunan, Sichuan, Guizhou, Yunnan, Fujian, Jiangxi, and Taiwan provinces (autonomous regions). It grows rapidly and has a high yield, with an annual fresh grass production of up to 30 tons per mu (approximately 20 tons per hectare). It is an important source of green fodder for herbivorous livestock in southern my country and one of the main varieties for establishing artificial grasslands in the south, with a planting area of ​​over 20 million mu (approximately 1.3 million hectares) and an annual renewal rate of over 20%. Because elephant grass is a cross-pollinated plant with a low seed setting rate, most propagation is done through rhizomes, although some is done through seed cultivation. Elephant grass propagation by seed stems has several drawbacks: a relatively low propagation coefficient, large transport space requirements, high demands on storage conditions, and a short shelf life, making it unsuitable for long-distance transportation. Therefore, research and development of elephant grass seed production technology is of great significance for the promotion of elephant grass and the development of tropical and subtropical grassland animal husbandry. Elephant grass seed production requires the initial threshing of the seeds, which involves using external forces to thresh the elephant grass seeds (see...). Figure 13 ) and spikelets, bristles, glumes, lemmas (see also Figure 12 This is a method for processing grass seeds by separating the two phases. Previously, it was basically obtained by manual rubbing. However, the quality and efficiency of manual processing are not high. In addition, the inner bark of the grass seeds has thorns (the thorns can cause local itching or even allergies when they come into contact with the skin), which is labor-intensive, inefficient, and easy to injure the hands.

[0003] To improve threshing efficiency, utility model patent No. 202310812919X discloses "a threshing and cleaning device for grass seeds." In use, the threshing and cleaning device operates a drive motor and a blower. The drive motor rotates a second double-grooved pulley, which in turn rotates a stirring rod and a second pulley on a second rotating shaft via a second belt. The second rotating shaft rotates a first pressure roller and its corresponding first double-grooved pulley. The first double-grooved pulley on the first pressure roller, via a first belt, rotates a second pressure roller and a beating device. The airflow generated by the blower flows through the air duct into the distribution cylinder, placing the grass seedlings at the front opening of the protective cover and pushing them onto the roller below the first pressure roller. The grass seedlings on the roller... The grass seeds are pushed under the second pressure roller by the rotation of the first pressure roller for squeezing and continued to be pushed backward, allowing for initial separation of the grass seeds from the plants. Subsequently, the grass seeds after the initial squeezing are transported by rollers to the bottom of the beating device for beating, knocking the grass seeds off the plants. The plants fall into the screening chamber and are crushed and threshed again by the stirring rod. The crushed plant debris is carried out from the rear end of the screening chamber by the rotation of the stirring rod. The grass seeds after the initial and secondary threshing fall into the receiving chamber and are blown into the distribution cylinder by the air force in the guide pipe. Under the action of the spiral rising airflow in the distribution cylinder, high-quality grass seeds fall from the bottom of the distribution cylinder, while low-quality grass seeds and debris that followed are blown out from the dust outlet pipe to achieve grass seed cleaning.

[0004] However, the aforementioned threshing and cleaning device requires manual placement of the grass seed plants at the front opening of the protective cover and pushing them onto the roller below the first pressure roller. Only then can the grass seed plants on the roller be pushed under the second pressure roller by the rotation and squeezing action of the first pressure roller, and continue to be pushed backward to achieve threshing and screening of the grass seeds. This results in a low degree of automation for the aforementioned threshing and cleaning device, and the threshing efficiency still needs to be further improved. Summary of the Invention

[0005] The present invention aims to overcome the shortcomings of the prior art and provide an elephant grass seed threshing device, which can automatically thresh elephant grass seeds with a higher degree of automation.

[0006] The technical solution of this invention to solve the problems of the prior art is:

[0007] An elephant grass seed threshing device includes a frame, a storage device for storing elephant grass inflorescences mounted on the frame, a threshing device for threshing elephant grass seeds, a dehulling device for removing attachments from the threshed elephant grass seeds, and a screening device for screening the dehulled elephant grass seeds.

[0008] A feeding device is provided between the storage device and the threshing device. The feeding device is used to send the elephant grass inflorescences stored in the storage device to the threshing device.

[0009] The threshing device includes a support frame mounted on a machine frame, a threshing mechanism mounted on the support frame, and a threshing conveying mechanism, wherein...

[0010] The threshing mechanism includes threshing rollers arranged vertically and vertically, and a threshing drive mechanism for driving the two sets of threshing rollers to rotate in opposite directions; wherein, the threshing rollers are provided with multiple sets of threshing components, which are arranged along the axial direction and the circumferential direction of the threshing rollers respectively; the threshing components on the upper and lower threshing rollers are staggered; when the feeding device delivers elephant grass inflorescences into the threshing device, the bottom of the elephant grass inflorescences will pass through the threshing mechanism first and then enter the threshing conveying mechanism;

[0011] The threshing and conveying mechanism includes conveying rollers arranged vertically and vertically, and a threshing and conveying drive mechanism for driving the two sets of conveying rollers to rotate, wherein the linear velocity of the conveying rollers is greater than the linear velocity of the threshing rollers.

[0012] Preferably, the threshing component is an arc-shaped block, which extends and bends along the rotation direction of the threshing roller.

[0013] Preferably, the two ends of the upper conveying roller are mounted on the bracket by an elastic telescopic structure, which enables the upper conveying roller to move vertically elastically.

[0014] Preferably, the threshing and conveying drive mechanism includes a conveying motor, the main shaft of which is connected to a lower conveying roller; the lower conveying roller and the lower threshing roller are connected by a belt drive mechanism; the upper and lower conveying rollers are connected by a gear drive mechanism; the upper threshing roller and the upper conveying roller are also connected by a belt drive mechanism; wherein, in the belt drive mechanism, the diameter of the pulley mounted on the threshing roller is larger than the diameter of the pulley mounted on the conveying roller.

[0015] Preferably, a leveling device for spreading elephant grass inflorescences is further provided between the feeding device and the threshing device. The leveling device includes a first support frame mounted on the frame, a first conveyor belt conveying mechanism and a second conveyor belt conveying mechanism mounted on the first support frame, wherein the first conveyor belt conveying mechanism and the second conveyor belt conveying mechanism are arranged at a 90-degree angle; the second conveyor belt conveying mechanism is located above the first conveyor belt conveying mechanism; the first conveyor belt conveying mechanism is located below the feeding port of the feeding device; wherein the first conveyor belt in the first conveyor belt conveying mechanism is provided with multiple sets of dividing strips arranged along the width direction of the first conveyor belt, and the multiple sets of dividing strips extend along the movement direction of the first conveyor belt; the second conveyor belt in the second conveyor belt conveying mechanism is provided with multiple sets of spreading plates arranged along the movement direction of the second conveyor belt, and the spreading plates extend along the width direction of the second conveyor belt.

[0016] Preferably, a collection funnel for collecting the separated elephant grass seeds is provided below the threshing mechanism, and the outlet of the collection funnel is located at the inlet of the hulling device.

[0017] Preferably, the threshing and conveying mechanism is provided with a collection pipe for collecting the elephant grass inflorescences that have been threshed.

[0018] Preferably, the shelling device includes a second support frame mounted on a machine frame, a third conveyor belt conveying mechanism mounted on the second support frame, and a fourth conveyor belt conveying mechanism, wherein the third conveyor belt conveying mechanism and the fourth conveyor belt conveying mechanism are arranged parallel to each other; the fourth conveyor belt conveying mechanism is located above the third conveyor belt conveying mechanism; wherein the third conveyor belt in the third conveyor belt conveying mechanism is provided with multiple sets of kneading components arranged along the width direction and the direction of movement of the third conveyor belt, and correspondingly, the fourth conveyor belt in the fourth conveyor belt conveying mechanism is provided with multiple sets of kneading components arranged along the width direction and the direction of movement of the fourth conveyor belt; the conveying speed of the fourth conveyor belt is greater than the conveying speed of the third conveyor belt; and the discharge port of the collecting funnel is located above the third conveyor belt.

[0019] Preferably, an elastic telescopic mechanism is provided between the fourth conveyor belt conveying mechanism and the second support frame, the elastic telescopic mechanism enabling the fourth conveyor belt conveying mechanism to move elastically vertically.

[0020] Preferably, the discharge port of the dehulling device is provided with a collection channel, which is connected to the inlet of the screening device, and the screening device is a cyclone separator.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] 1. The elephant grass seed threshing device of the present invention can automatically realize the feeding, conveying, threshing, dehulling and screening of elephant grass inflorescences, with a higher degree of automation, which is conducive to further improving work efficiency and reducing work costs.

[0023] 2. In the elephant grass seed threshing device of the present invention, during threshing, the bottom of the elephant grass inflorescence enters the threshing device first, passes through the threshing mechanism, and enters the threshing conveying mechanism, while the part containing the elephant grass seeds enters the threshing device last. Since the linear velocity of the conveying roller is greater than that of the threshing roller, the threshing conveying mechanism exerts a force on the elephant grass inflorescence along the conveying direction, causing relative movement between the elephant grass inflorescence and the threshing roller. Under the action of the threshing elements on the surface of the threshing roller, friction occurs, causing the elephant grass seeds to detach from the elephant grass inflorescence. This greatly improves threshing efficiency and effect. The threshing roller is used to convey the elephant grass inflorescence, allowing it to smoothly transition from the feeding device to the conveying roller. When the elephant grass inflorescence contacts the conveying roller, its speed increases rapidly, creating a speed difference with the threshing roller. The threshing elements on the surface of the threshing roller then tear the seeds off, achieving threshing. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the elephant grass seed threshing device of the present invention.

[0025] Figure 2 and Figure 3 These are three-dimensional structural diagrams (with the outer shell removed) from two different perspectives of the elephant grass seed threshing device of the present invention.

[0026] Figure 4 and Figure 5 This is a three-dimensional structural diagram of the paving device from two different perspectives.

[0027] Figure 6 and Figure 7 These are three-dimensional structural diagrams of the threshing device from two different perspectives.

[0028] Figure 8 This is a three-dimensional structural diagram of an elastically stretchable structure.

[0029] Figure 9 This is a schematic diagram of the shelling device.

[0030] Figure 10 This is a picture of elephant grass.

[0031] Figure 11 This is a picture of an elephant grass inflorescence.

[0032] Figure 12Images of artificially treated elephant grass seeds and seed attachments.

[0033] Figure 13 This is a picture of elephant grass seeds. Detailed Implementation

[0034] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0035] See Figures 1-13 The elephant grass seed threshing device of the present invention includes a frame, a storage device 1 for storing elephant grass inflorescences disposed on the frame, a threshing device 9 for threshing elephant grass seeds, a dehulling device for removing attachments from the threshed elephant grass seeds, and a screening device 5 for screening the dehulled elephant grass seeds, wherein the attachments include spikelets and basal bristles, glumes, and lemmas.

[0036] See Figures 1-13 A feeding device 2 is provided between the storage device 1 and the threshing device 9. The feeding device 2 is used to send the elephant grass inflorescences stored in the storage device 1 to the threshing device 9. In this embodiment, the feeding device 2 adopts a conveyor belt conveying method.

[0037] See Figures 1-13 The threshing device 9 includes a support 903 mounted on a frame, a threshing mechanism mounted on the support 903, and a threshing conveying mechanism, wherein...

[0038] The threshing mechanism includes threshing rollers 901 arranged vertically and vertically, and a threshing drive mechanism for driving the two sets of threshing rollers 901 to rotate in opposite directions. Each threshing roller 901 has multiple sets of threshing elements 909 arranged along both the axial and circumferential directions of the threshing roller 901. The threshing elements 909 on the upper and lower threshing rollers 901 are staggered. When the feeding device 2 delivers elephant grass inflorescences into the threshing device 9, the bottom of the elephant grass inflorescence will pass through the threshing mechanism first and then enter the threshing conveying mechanism.

[0039] The threshing and conveying mechanism includes vertically arranged conveying rollers 902 and a threshing and conveying drive mechanism for driving the upper and lower sets of conveying rollers 902 to rotate. The linear velocity of the conveying rollers 902 is greater than the linear velocity of the threshing rollers 901. Therefore, the threshing and conveying drive mechanism includes a conveying motor 910, the main shaft of which is connected to the lower conveying roller 902. The lower conveying roller 902 is connected to the lower threshing roller 901 via a belt drive mechanism 905. The upper and lower conveying rollers 902 are connected via a gear drive mechanism 906. The upper threshing roller 901 is also connected to the upper conveying roller 902 via a belt drive mechanism 905. In the belt drive mechanism 905, the diameter of the pulley mounted on the threshing roller 901 is larger than the diameter of the pulley mounted on the conveying roller 902. A collection pipe 10 is provided at the threshing and conveying mechanism for collecting the threshed elephant grass inflorescences.

[0040] With the above setup, the feeding device 2 will load the elephant grass inflorescence (see above) from the storage device 1. Figure 11 During the feeding process into the threshing device 9, the bottom of the elephant grass inflorescence enters the threshing device 9 first, passes through the threshing mechanism, and enters the threshing conveying mechanism. The part containing elephant grass seeds enters the threshing device 9 last. Since the linear velocity of the conveying roller 902 is greater than the linear velocity of the threshing roller 901, the threshing conveying mechanism generates a forward pulling force on the elephant grass inflorescence. Thus, while conveying the elephant grass inflorescence, it pulls the elephant grass inflorescence to the threshing mechanism. Under the action of the threshing part 909 on the surface of the threshing roller 901, the elephant grass seeds will detach from the elephant grass inflorescence and fall into the collection funnel 907 below, and then into the hulling device. The elephant grass inflorescence then enters the corresponding collection mechanism through the collection pipe 10, thereby completing the threshing of the elephant grass seeds.

[0041] In this embodiment, the threshing component 909 is an arc-shaped block. The arc-shaped block 909 bends and extends along the rotation direction of the threshing roller 901, so that it can drive the elephant grass inflorescence forward while threshing, thus playing the role of auxiliary conveying 909.

[0042] In addition, a guide plate 908 is provided on the front side of the threshing roller 901, which is used to guide the threshed elephant grass seeds into the collection funnel 907.

[0043] See Figures 1-13A leveling device for spreading elephant grass inflorescences is also provided between the feeding device 2 and the threshing device 9. The leveling device includes a first support frame mounted on the machine frame, a first conveyor belt conveying mechanism 7 and a second conveyor belt conveying mechanism 8 mounted on the first support frame, wherein the first conveyor belt conveying mechanism 7 and the second conveyor belt conveying mechanism 8 are arranged at 90 degrees; the second conveyor belt conveying mechanism 8 is located above the first conveyor belt conveying mechanism 7; the first conveyor belt conveying mechanism 7 is located below the feeding port of the feeding device 2; wherein the first conveyor belt in the first conveyor belt conveying mechanism 7 is provided with multiple sets of dividing strips 701 arranged along the width direction of the first conveyor belt, and the multiple sets of dividing strips 701 extend along the movement direction of the first conveyor belt; the second conveyor belt in the second conveyor belt conveying mechanism 8 is provided with multiple sets of spreading plates 801 arranged along the movement direction of the second conveyor belt, and the spreading plates 801 extend along the width direction of the second conveyor belt.

[0044] With the above configuration, when the feeding device 2 feeds the elephant grass inflorescence onto the first conveyor belt, the first conveyor belt drives the elephant grass inflorescence to move toward the threshing device 9. When it passes the second conveyor belt conveying mechanism 8, since the second conveyor belt moves cyclically along the width direction of the first conveyor belt, the spreading plate 801 set on the second conveyor belt and located on the lower side will move along the width direction of the first conveyor belt, thereby pushing the elephant grass inflorescence that is piled up too high to move along the width direction of the first conveyor belt, thereby pushing the elephant grass inflorescence into other partitioned spaces (i.e., the space between two adjacent sets of partition strips 701), thereby achieving the spreading of the elephant grass inflorescence located on the first conveyor belt.

[0045] In this embodiment, both the first conveyor belt and the second conveyor belt are driven by existing devices, namely, a motor, a drive pulley and a driven pulley. The motor drives the drive pulley to rotate, thereby driving the driven pulley and the first and second conveyor belts surrounding the drive pulley and the driven pulley to move.

[0046] See Figures 1-13The hulling device includes a second support frame mounted on a machine frame, a third conveyor belt conveying mechanism 11 mounted on the second support frame, and a fourth conveyor belt conveying mechanism 12, wherein the third conveyor belt conveying mechanism and the fourth conveyor belt conveying mechanism 12 are arranged parallel to each other; the fourth conveyor belt conveying mechanism 12 is located above the third conveyor belt conveying mechanism 11; wherein the third conveyor belt in the third conveyor belt conveying mechanism 11 is provided with multiple sets of kneading components 13 arranged along the width direction and the direction of movement of the third conveyor belt, and correspondingly, the fourth conveyor belt in the fourth conveyor belt conveying mechanism 12 is provided with multiple sets of kneading components 13 arranged along the width direction and the direction of movement of the fourth conveyor belt; the conveying speed of the fourth conveyor belt is greater than the conveying speed of the third conveyor belt; a collection funnel 907 for collecting the separated elephant grass seeds is provided below the threshing mechanism, and the outlet of the collection funnel 907 is located at the inlet of the hulling device, that is, the outlet of the collection funnel 907 is located above the third conveyor belt.

[0047] With the above settings, the threshed elephant grass seeds (see...) Figure 12 The seeds enter the third conveyor belt from the collection funnel 907, which carries the elephant grass seeds forward. Since the fourth conveyor belt moves in the same direction as the third conveyor belt, and its speed is greater than the third, the elephant grass seeds located between the third and fourth conveyor belts experience a forward force due to the speed difference between their upper and lower sides. This force causes the seeds to move forward and come into contact with the rubbing elements 13 on both conveyor belts, generating friction and removing the adhering substances from their surface. Because the dehulling device has a collection channel at its outlet, which connects to the inlet of the screening device 5 (a cyclone separator), the elephant grass seeds after the adhering substances are removed (see...). Figure 13 The seeds and attached materials are transported into the collection channel and enter the cyclone separator along the collection channel. The elephant grass seeds are separated from the attached materials by cyclone separation. At the same time, the elephant grass seeds can also be screened by cyclone separation, that is, the superior and inferior elephant grass seeds are screened by weight.

[0048] See Figures 1-13The two ends of the upper conveying roller 902 are mounted on the bracket 903 via an elastic telescopic structure, which enables the upper conveying roller 902 to move vertically elastically. This structure allows the upper conveying roller 902 to rise and fall vertically to accommodate the clamping and conveying of elephant grass inflorescences of different diameters. In this embodiment, the elastic telescopic structure includes a vertically arranged slide groove 911 on the bracket 903 and a slide block 912 mounted on the slide groove 911. A spring 913 is provided on the upper side of the slide block 912 and the top of the slide groove 911. The upper end of the spring 913 acts on the bracket 903, and the lower end acts on the slide block 912. Both ends of the conveying roller 902 are respectively mounted on the slide block 912.

[0049] See Figures 1-13 An elastic telescopic mechanism 14 is provided between the fourth conveyor belt conveying mechanism 12 and the second support frame. The elastic telescopic mechanism 14 enables the fourth conveyor belt conveying mechanism 12 to move elastically vertically, thereby ensuring that the lower surface of the fourth conveyor belt can elastically press the elephant grass seeds against the upper surface of the third conveyor belt, thereby increasing the friction between the elephant grass seeds and the rubbing parts 13 on the upper surface of the third conveyor belt and the lower surface of the fourth conveyor belt, so as to improve the removal effect of the husk on the surface of the elephant grass seeds. The specific structure is as follows: the above-mentioned "elastic telescopic structure" is provided on both sides of the driving roller and the driven roller of the fourth conveyor belt. Furthermore, the third conveyor belt conveying mechanism 11 and the fourth conveyor belt conveying mechanism 12 adopt the same power structure, which includes a motor and a belt drive mechanism 15. The drive rollers of the third conveyor belt conveying mechanism 11 and the fourth conveyor belt conveying mechanism 12 are connected through the belt drive mechanism 15, while the motor is connected to one of the drive rollers. Similarly, in order to ensure that the conveying speed of the fourth conveyor belt is greater than that of the third conveyor belt, the outer diameter of the pulley installed on the drive roller in the third conveyor belt conveying mechanism 11 is larger than the outer diameter of the pulley installed on the drive roller in the fourth conveyor belt conveying mechanism 12.

[0050] See Figures 1-13 The lower end of the cyclone separator is connected to the elephant grass seed collection device, and the upper end is connected to the lemma collection device 6, so as to achieve separate collection of elephant grass seeds and seed attachments (spikelets, basal bristles, glumes and lemma).

[0051] See Figures 1-13 The frame is provided with an outer shell 3, and the upper end of the outer shell 3 is provided with a collection port 4. The collection port 4 is used to collect dust or debris inside the equipment to prevent it from polluting the environment.

[0052] See Figures 1-13The working principle of the elephant grass seed threshing device 9 of the present invention is as follows:

[0053] During operation, the feeding device 2 will collect the elephant grass inflorescences from the collection device (see...). Figure 11 When the elephant grass inflorescence is fed onto the first conveyor belt, the first conveyor belt drives the elephant grass inflorescence to move in the direction of the threshing device 9. When it passes the second conveyor belt conveying mechanism 8, since the second conveyor belt moves cyclically along the width direction of the first conveyor belt, the spreading plate 801 set on the second conveyor belt and located on the lower side will move along the width direction of the first conveyor belt, thereby pushing the elephant grass inflorescence that is piled up too high to move along the width direction of the first conveyor belt, thereby pushing the elephant grass inflorescence into other partitioned spaces (i.e., the space between two adjacent sets of partition strips 701), thereby realizing the spreading of the elephant grass inflorescence located on the first conveyor belt.

[0054] As the first conveyor belt feeds the flattened elephant grass inflorescences into the threshing device 9, the roots of the inflorescences enter the threshing device 9 first, pass through the threshing mechanism, and enter the threshing and conveying mechanism. The portion containing elephant grass seeds enters the threshing device 9 last. Because the linear velocity of the conveying roller 902 is greater than that of the threshing roller 901, the threshing and conveying mechanism generates a forward pulling force on the elephant grass inflorescences. This pulls the inflorescences through the threshing mechanism while conveying them. Under the action of the threshing element 909 on the surface of the threshing roller 901, the elephant grass seeds (see...) are threshed. Figure 12 The seeds will detach from the elephant grass inflorescence and fall into the collection funnel 907 below, and then into the hulling device; while the elephant grass inflorescence enters the corresponding collection mechanism through the collection pipe 10, thereby completing the hulling of the elephant grass seeds.

[0055] After threshing, the elephant grass seeds enter the third conveyor belt through the collection funnel 907. The third conveyor belt carries the elephant grass seeds forward. Since the conveying direction of the fourth conveyor belt is the same as that of the third conveyor belt, and the conveying speed of the fourth conveyor belt is greater than that of the third conveyor belt, the elephant grass seeds located between the third and fourth conveyor belts experience a forward force due to the speed difference between their upper and lower sides. This force causes the elephant grass seeds to move forward and come into contact with the rubbing parts 13 on the third and fourth conveyor belts, generating friction and removing the adhering substances from the surface of the elephant grass seeds. Since a collection channel is provided at the discharge port of the hulling device, and the collection channel is connected to the inlet of the screening device 5, which is a cyclone separator, the elephant grass seeds and husks after the husks have been removed are conveyed into the collection channel and enter the cyclone separator along the collection channel. The elephant grass seeds are separated from the adhering substances by cyclone separation. At the same time, the cyclone separation method can also be used to separate the elephant grass seeds (see...). Figure 13The screening process involves separating superior and inferior elephant grass seeds by their weight.

[0056] The above are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above content. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention shall be considered equivalent substitutions and shall be included within the protection scope of the present invention.

Claims

1. A seed threshing device for elephant grass, characterized in that, It includes a frame, a storage device on the frame for storing elephant grass inflorescences, a threshing device for threshing elephant grass seeds, a dehulling device for removing attachments from the threshed elephant grass seeds, and a screening device for screening the dehulled elephant grass seeds. A feeding device is provided between the storage device and the threshing device. The feeding device is used to send the elephant grass inflorescences stored in the storage device to the threshing device. The threshing device includes a support frame mounted on a machine frame, a threshing mechanism mounted on the support frame, and a threshing conveying mechanism, wherein... The threshing mechanism includes threshing rollers arranged vertically and vertically, and a threshing drive mechanism for driving the two sets of threshing rollers to rotate in opposite directions; wherein, the threshing rollers are provided with multiple sets of threshing components, which are arranged along the axial direction and the circumferential direction of the threshing rollers respectively; the threshing components on the upper and lower threshing rollers are staggered; when the feeding device delivers elephant grass inflorescences into the threshing device, the bottom of the elephant grass inflorescences will pass through the threshing mechanism first and then enter the threshing conveying mechanism; The threshing and conveying mechanism includes conveying rollers arranged vertically and vertically, and a threshing and conveying drive mechanism for driving the two sets of conveying rollers to rotate, wherein the linear velocity of the conveying rollers is greater than the linear velocity of the threshing rollers.

2. The elephant grass seed threshing device according to claim 1, characterized in that, The threshing component is an arc-shaped block that bends and extends along the rotation direction of the threshing roller.

3. The elephant grass seed threshing device according to claim 1, characterized in that, The two ends of the upper conveyor roller are mounted on the bracket by an elastic telescopic structure, which enables the upper conveyor roller to move vertically elastically.

4. The elephant grass seed threshing device according to claim 1, characterized in that, The threshing and conveying drive mechanism includes a conveying motor, the main shaft of which is connected to a lower conveying roller; the lower conveying roller and the lower threshing roller are connected by a belt drive mechanism; the upper and lower conveying rollers are connected by a gear drive mechanism; the upper threshing roller and the upper conveying roller are also connected by a belt drive mechanism; wherein, in the belt drive mechanism, the diameter of the pulley mounted on the threshing roller is larger than the diameter of the pulley mounted on the conveying roller.

5. The elephant grass seed threshing device according to claim 1, characterized in that, A leveling device for spreading elephant grass inflorescences is also provided between the feeding device and the threshing device. The leveling device includes a first support frame mounted on the machine frame, a first conveyor belt conveying mechanism and a second conveyor belt conveying mechanism mounted on the first support frame, wherein the first conveyor belt conveying mechanism and the second conveyor belt conveying mechanism are arranged at a 90-degree angle; the second conveyor belt conveying mechanism is located above the first conveyor belt conveying mechanism; the first conveyor belt in the first conveyor belt conveying mechanism is provided with multiple sets of dividing strips arranged along the width direction of the first conveyor belt, and the multiple sets of dividing strips extend along the movement direction of the first conveyor belt; the second conveyor belt in the second conveyor belt conveying mechanism is provided with multiple sets of paving plates arranged along the movement direction of the second conveyor belt, and the paving plates extend along the width direction of the second conveyor belt.

6. The elephant grass seed threshing device according to claim 1, characterized in that, Below the threshing mechanism is a collection funnel for collecting the separated elephant grass seeds, and the outlet of the collection funnel is located at the inlet of the hulling device.

7. The elephant grass seed threshing device according to claim 1, characterized in that, The threshing and conveying mechanism is equipped with a collection pipe for collecting the elephant grass inflorescences that have completed threshing.

8. The elephant grass seed threshing device according to claim 6, characterized in that, The shelling device includes a second support frame mounted on a machine frame, a third conveyor belt conveying mechanism mounted on the second support frame, and a fourth conveyor belt conveying mechanism, wherein the third conveyor belt conveying mechanism and the fourth conveyor belt conveying mechanism are arranged parallel to each other; the fourth conveyor belt conveying mechanism is located above the third conveyor belt conveying mechanism; wherein the third conveyor belt in the third conveyor belt conveying mechanism is provided with multiple sets of kneading components arranged along the width direction and the direction of movement of the third conveyor belt, and correspondingly, the fourth conveyor belt in the fourth conveyor belt conveying mechanism is provided with multiple sets of kneading components arranged along the width direction and the direction of movement of the fourth conveyor belt; the conveying speed of the fourth conveyor belt is greater than the conveying speed of the third conveyor belt; the discharge port of the collecting funnel is located above the third conveyor belt.

9. The elephant grass seed threshing device according to claim 8, characterized in that, An elastic telescopic mechanism is provided between the fourth conveyor belt conveying mechanism and the second support frame, which enables the fourth conveyor belt conveying mechanism to move elastically vertically.

10. The elephant grass seed threshing device according to claim 9, characterized in that, The dehulling device has a collection channel at its outlet, which is connected to the inlet of the screening device, which is a cyclone separator.

Images