Conveying primary threshing roller and threshing device

Abstract

The invention discloses a conveying primary threshing roller and a threshing device, and belongs to the technical field of gramineous crop threshing. The problem that in the threshing process of a threshing device in the prior art, crops are prone to being wound and stacked on a feeding threshing roller, and consequently a feeding port is blocked is solved. A threshing rib is arranged on the outer side wall of the roller body and comprises a connecting part and a feeding part, the connecting part is fixedly connected with the roller body, the feeding part is obliquely arranged relative to the connecting part, the inclination direction of the feeding part is opposite to the rotating direction of the roller body, and a feeding surface is formed on the surface, back to the roller body, of the feeding part. The conveying and primary threshing roller and the threshing device are used for auxiliary feeding and primary threshing of gramineous crops, the feeding part is obliquely arranged in the direction opposite to the rotating direction of the roller body, the situation that the crops are wound on the rake teeth and accumulated on the bent part to block the feeding port is avoided, the crops are smoothly pushed into the feeding port, auxiliary feeding is achieved, and the feeding effect is improved; crops are primarily threshed, and the threshing quality is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of threshing of gramineous crops, and in particular relates to a conveying primary threshing roller and a threshing device. Background Art

[0002] A thresher in agriculture refers to a mechanical equipment that can separate the grains and stems of crops. It is mainly used for threshing gramineous crops such as wheat, rice, rapeseed, sorghum, barley, coix seed, mung bean, and soybean.

[0003] Generally, the thresher includes a shell and a threshing drum installed in the inner cavity of the shell; one end of the shell is the feed end, and the other end is the slag discharge end; the threshing drum rotates around its own horizontal axis through a motor, and feeds from the feed end to the slag discharge end; a feed port located at the feed end is provided at the upper part of the shell, a slag discharge port located at the slag discharge end is provided at one side of the shell, and a discharge port is provided at the bottom of the shell, and the feed port, slag discharge port and discharge port are all connected to the inner cavity of the shell. Crops are fed into the inner cavity of the shell through the feed port, and the motor drives the threshing drum to rotate around its own horizontal axis, so that the grains and stems of the crops are separated during the rotation and transportation process, and the stems are discharged from the slag discharge port, and the grains are discharged from the discharge port.

[0004] The Chinese patent document with application number 202411228274.6 discloses a multi-stage threshing device, including a shell, and a first fine threshing drum and a second fine threshing drum rotatably mounted in the shell. A feed hopper is installed at the feed inlet of the shell, and a feed rough threshing drum is installed in the feed hopper. The feed rough threshing drum includes a vertically arranged connecting disk, and two connecting disks are provided. The two connecting disks are arranged at intervals in the horizontal direction and are coaxially installed through a first rotating shaft; the first rotating shaft is rotatably connected to the side wall of the feed hopper; the axial direction of the first rotating shaft is parallel to the rotation center of the first fine threshing drum; a plurality of feed rake tooth rods are installed between the two connecting disks, and the feed rake tooth rods include a connecting rod parallel to the first rotating shaft, and rake teeth arranged on the outer peripheral surface of the connecting rod; one end of the connecting rod is connected to one of the connecting disks, and the other end is connected to the other connecting disk; a plurality of rake teeth are provided, and the plurality of rake teeth are arranged at intervals in pairs along the axial direction of the connecting rod. The rake teeth dig into the gramineous crops during feeding, and the crops are pulled into the feeding port. The crops are easily entangled on the rake teeth, and then entangled on the feeding rake tooth rod and the feeding coarse threshing drum, and the feeding port is blocked, resulting in uneven feeding of crops or even failure to feed. The amount of crops dug into the rake teeth cannot be controlled, and the amount dug into the crops is too much, causing the feeding port to be blocked. The inclination direction of the feeding part is the same as the rotation direction of the conveying primary threshing roller. The end of the feeding part contacts the crops, digging the crops into the feeding port. The end of the feeding part is easy to pull the crops into the feeding port. The stems of crops are broken by digging, such as rice with high humidity, which is more likely to be broken. The broken stems are accumulated in the curved part composed of the connecting part and the feeding part, causing the feed port to be blocked, seriously affecting the feeding effect of the threshing device; the feed port is often blocked, and the user needs to stop the machine to remove the crops entangled on the rake teeth, and then start threshing, which increases the number of stoppages and downtime, and increases the time required for overall threshing, thereby affecting the threshing efficiency. In particular, for gramineous crops with humidity such as rice, the phenomenon of entanglement with the rake teeth is more serious, seriously affecting the feeding effect and threshing efficiency. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a conveying primary threshing roller and a threshing device, wherein the conveying primary threshing roller pushes crops into a feed port smoothly, thereby preventing crops from entangled in rake teeth and accumulating to cause the feed port to be blocked, thereby greatly improving the feeding effect and threshing efficiency.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] The present invention discloses a conveying primary threshing roller, comprising a roller body, an outer side wall of the roller body being provided with threshing ribs, the threshing ribs comprising a fixedly connected connecting portion and a feeding portion, the connecting portion being fixedly connected to the roller body, the feeding portion being inclined relative to the connecting portion, the inclination direction of the feeding portion being opposite to the rotation direction of the roller body, and a side of the feeding portion facing away from the roller body forming a feeding surface.

[0008] Furthermore, the roller body is in the shape of a cylinder, an elliptical cylinder or a rhombus.

[0009] Furthermore, the threshing ribs extend from one end to the other end along the axial direction of the roller body, and at least two threshing ribs are evenly arranged on the outer side wall of the roller body.

[0010] Furthermore, a plurality of threshing ribs are evenly spaced on the outer side wall of the roller body along the circumferential direction and the axial direction of the roller body.

[0011] Furthermore, the roller body includes two relatively arranged connecting plates, the two connecting plates are fixedly connected by a rotating shaft, at least two parallel fixing rods are arranged between the two connecting plates, the fixing rods are evenly arranged between the two connecting plates, the fixing rods are parallel to the axis of the rotating shaft, and the threshing ribs are arranged on the outer side wall of the fixing rod facing away from the rotating shaft.

[0012] Furthermore, the threshing ribs extend from one end to the other end along the axial direction of the fixing rod.

[0013] Furthermore, the threshing ribs are evenly spaced along the axial direction of the fixing rod.

[0014] Furthermore, the feeding portion includes a connecting end connected to the connecting portion and a free end opposite to the connecting end, and an end surface of the free end is provided with a serration structure.

[0015] The present invention also discloses a threshing device, comprising a feed hopper, a shell and the above-mentioned conveying primary threshing roller, wherein the feed hopper is arranged at the feed port of the shell and communicates with the feed port, and the roller body is rotatably connected to a position in the feed hopper close to the feed port.

[0016] Furthermore, the shell includes a first fine threshing chamber, which is located on the other side of the feed port opposite to the feed hopper and communicated with the feed port, a first fine threshing drum is rotatably arranged in the first fine threshing chamber, the axis of the first fine threshing drum is parallel to the axis of the conveying primary threshing roller, a first screen is arranged below the first fine threshing drum, the first screen is located below the feed port, a side wall of the first fine threshing chamber communicating with the feed port is provided with an anti-backflow plate, the anti-backflow plate is located above the first screen, the upper end of the anti-backflow plate is located above the feed port, and the lower end of the anti-backflow plate extends out of the upper edge of the feed port toward the first screen.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention provides a conveying and initial threshing roller, wherein the outer wall of the roller body is provided with threshing ribs, the feeding portion of the threshing ribs is inclined (bent) in the direction opposite to the rotation direction of the roller body relative to the connecting portion, and the conveying and initial threshing roller is installed in the feed hopper of the threshing device near the feed port, and during the threshing process of gramineous crops, the conveying and initial threshing roller rotates to assist the feeding of gramineous crops and perform initial threshing on the gramineous crops. Compared with the feeding part whose inclination (bending) direction is the same as the rotation direction of the roller body, the end of the feeding part contacts with the crops and digs the crops into the feed port. The end of the feeding part is easy to dig off the stems of the crops. For example, rice with high humidity is easier to dig off, and the broken stems accumulate in the bending part composed of the connecting part and the feeding part, causing the feed port to be blocked. The inclination (bending) direction of the feeding part of the conveying primary threshing roller of the present application is opposite to the rotation direction of the roller body. When feeding crops, the feeding surface of the feeding part contacts with the crops, and the crops are pushed (dialed) into the feed port and then enter the fine threshing chamber, thereby avoiding the feeding part from directly digging into the crops, avoiding the crops from being entangled on the threshing ribs and accumulating on the bending part, avoiding the crops from accumulating on the conveying primary threshing roller, avoiding the feed port to be blocked, better assisting feeding, and greatly improving the feeding effect. When feeding crops, the feeding surface contacts the crops, and a feeding space is formed between the feeding surface and the lower inner wall of the feed hopper away from the feed port, and a discharging space is formed between the feeding surface and the lower inner wall of the feed hopper close to the feed port. When feeding crops, the crops enter the feeding space, and the feeding unit can more easily push the crops into the feed port. During the feeding process, the feeding space is reduced and the discharging space is increased. The feeding unit squeezes and pushes the crops into the feed port and then into the fine threshing chamber, which is conducive to better auxiliary feeding and further improves the feeding effect. The feeding surface pushes (dials) the crops into the feed port, and the crops enter the fine threshing chamber downward, which prevents the crops from being entangled and accumulated on the threshing ribs under the action of centrifugal force and being thrown back to the feed port to cause blockage of the feed port, and at the same time prevents the initially threshed grains of the crops from being thrown out and splashing to cause damage to the user. When crops are fed, the crops enter the feeding space, which can ensure that the amount of crops fed each time is appropriate, control the feeding amount, ensure that the crops are fed evenly, and avoid digging too much crops to block the feed port; the crops are fed evenly, which improves the threshing quality of the crops in the threshing device, while reducing the overload of the threshing device, reducing the maintenance of the threshing device, and extending the service life of the threshing device. The conveying initial threshing roller of the present application effectively avoids the crops from being entangled and accumulated on the conveying initial threshing roller, reduces the time and number of shutdowns for users to remove the entangled and accumulated crops from the conveying initial threshing roller, greatly reduces the time required for overall threshing, and improves the threshing efficiency. The conveying initial threshing roller and the subsequent fine threshing roller of the threshing device form a multi-stage threshing mechanism. During the threshing process, the conveying initial threshing roller performs initial threshing on the crops, providing better threshing conditions for the subsequent fine threshing of the threshing device, and improving the threshing quality of the threshing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a front view of a cylindrical conveying primary threshing roller provided by an embodiment of the present invention, in which the threshing ribs integrally extend along the axial direction of the roller body;

[0021] Figure 2 yes Figure 1 Side view of

[0022] Figure 3 It is a side view of a conveying primary threshing roller of a triangular prism-shaped roller body provided in an embodiment of the present invention;

[0023] Figure 4 It is a three-dimensional diagram of a conveying primary threshing roller of a quadrangular prism-shaped roller body provided in an embodiment of the present invention;

[0024] Figure 5 yes Figure 4 A partial enlarged view of part B in the middle;

[0025] Figure 6 It is a side view of a conveying primary threshing roller of a quadrangular prism-shaped roller body provided in an embodiment of the present invention;

[0026] Figure 7 It is a front view of a conveying primary threshing roller provided by an embodiment of the present invention, in which threshing ribs are arranged at intervals along the axial direction of the roller body;

[0027] Figure 8 It is a front view of a conveying primary threshing roller provided by an embodiment of the present invention, in which a threshing rib composed of a connecting disk, a rotating shaft and a fixing rod integrally extends along the axial direction of the fixing rod;

[0028] Fig. 9 yes Figure 8 Side view of

[0029] Fig.10 It is a front view of the conveying primary threshing rollers provided by the embodiment of the present invention, in which the threshing ribs are arranged at intervals along the axial direction of the fixed rod;

[0030] Fig.11 is a side structural schematic diagram of a threshing device provided by an embodiment of the present invention;

[0031] Fig.12 is a schematic diagram of the top view of the threshing device provided by an embodiment of the present invention;

[0032] Fig.13 yes Figure 8 A partial enlarged view of part A in the middle.

[0033] Reference numerals:

[0034] Roller body 1, threshing ribs 2, connecting part 201, feeding surface 202, feeding part 203, serrated structure 3, connecting plate 4, rotating shaft 5, fixing rod 6, feeding hopper 7, backflow prevention plate 8, first fine threshing chamber 9, first fine threshing drum 10, shell 11, first screen 12, second fine threshing drum 13, slag outlet 14, second fine threshing chamber 15. DETAILED DESCRIPTION

[0035] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0036] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0037] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6As shown, this embodiment provides a conveying primary threshing roller, including a roller body 1, a threshing rib is arranged on the outer side wall of the roller body 1, and the threshing rib 2 includes a fixedly connected connecting portion 201 and a feeding portion 203, the connecting portion 201 is fixedly connected to the roller body 1, the feeding portion 203 is tilted relative to the connecting portion 201, the tilting direction of the feeding portion 203 is opposite to the rotation direction of the roller body 1, and the feeding surface 202 is formed on the side of the feeding portion 203 facing away from the roller body 1. The tilting angle of the feeding portion 203 is such as 15°-30°. The threshing rib 2 is a threshing rod or a threshing bar or a threshing plate. The threshing rib is welded to the outer side wall of the roller body 1 or is integrally formed with the roller body 1, and the outer side of the roller body 1 and the threshing rib is coated with an anti-corrosion paint layer. A reinforcing rib can be provided on the back of the feeding surface to prevent deformation, a support rod can be welded between the connecting portion 201 and the feeding portion 203, one end of the support rod is welded to the connecting portion 201, and the other end of the support rod is welded to the back of the feeding surface 202, or the support rod is welded between the roller body 1 and the feeding portion 203, one end of the support rod is welded to the roller body 1, and the other end of the support rod is welded to the back of the feeding surface 202, so as to support the feeding portion 203, keep the inclination angle unchanged, and extend the service life of the conveying primary threshing roller. An axis or a whole axis is provided at the center position of the left and right side walls of the roller body 1 to penetrate the roller body 1, a pulley is provided on the left side axis, the pulley is connected to the pulley of the motor or the engine through a belt, and the motor or the engine drives the roller body 1 to rotate.

[0038] A conveying and initial threshing roller based on the structure is provided with threshing ribs 2 on the outer wall of the roller body 1, and the feeding portion 203 of the threshing ribs 2 is inclined (bent) in the direction opposite to the rotation direction of the roller body 1 relative to the connecting portion 201, and the conveying and initial threshing roller is installed in the feed hopper 7 of the threshing device near the feed port. During the threshing process of gramineous crops, the conveying and initial threshing roller rotates to assist the feeding of gramineous crops and perform initial threshing on the gramineous crops. Compared with the feeding part 203, the inclination (bending) direction is the same as the rotation direction of the roller body, the end of the feeding part 203 contacts the crops and digs the crops into the feed port. The end of the feeding part 203 is easy to dig the stems of the crops. For example, rice with high humidity is easier to dig, and the broken stems are accumulated in the bending part composed of the connecting part 201 and the feeding part 203, causing the feed port to be blocked. The inclination (bending) direction of the feeding part 203 of the conveying primary threshing roller of the present application is opposite to the rotation direction of the roller body. When feeding crops, the feeding surface 202 of the feeding part 203 contacts the crops, and the crops are pushed (dialed) into the feed port and then enter the fine threshing chamber, so as to avoid the feeding part 203 directly digging into the crops, avoid the crops from being entangled on the threshing ribs 2 and accumulated in the bending part, avoid the crops from accumulating on the conveying primary threshing roller, avoid clogging the feed port, better assist feeding, and greatly improve the feeding effect. When feeding crops, the feeding surface 202 contacts the crops, and a feeding space is formed between the feeding surface 202 and the lower inner wall of the feed hopper 7 away from the feed port, and a discharging space is formed between the feeding surface 202 and the lower inner wall of the feed hopper 7 close to the feed port. When feeding crops, the crops enter the feeding space, and the feeding part 203 can more easily push the crops into the feed port. During the feeding process, the feeding space is reduced and the discharging space is increased. The feeding part 203 squeezes and pushes the crops into the feed port and then enters the fine threshing chamber, which is conducive to better auxiliary feeding and further improves the feeding effect. The feeding surface 202 pushes (dials) the crops into the feed port, and the crops enter the fine threshing chamber downward, avoiding the crops from being entangled and accumulated on the threshing ribs 2 under the action of centrifugal force and being thrown back to the feed port to cause blockage of the feed port, and at the same time avoiding the initial threshing of the crops. Grains are thrown out and splashed to cause damage to the user. When crops are fed, they enter the feeding space, which can ensure that the amount of crops fed each time is appropriate, control the feeding amount, ensure that the crops are fed evenly, and avoid digging too much crops to block the feeding port; the crops are fed evenly, which improves the threshing quality of the threshing device, while reducing the overload of the threshing device, reducing the maintenance of the threshing device, and extending the service life of the threshing device. The conveying initial threshing roller of the present application effectively avoids the entanglement and accumulation of crops on the conveying initial threshing roller, reduces the time and number of stops for users to remove the entangled and accumulated crops from the conveying initial threshing roller, greatly reduces the time required for overall threshing, and improves threshing efficiency.The conveying primary threshing roller and the subsequent fine threshing drum of the threshing device form a multi-stage threshing mechanism. During the threshing process, the conveying primary threshing roller performs primary threshing on the crops, providing better threshing conditions for the subsequent fine threshing of the threshing device, and improving the threshing quality of the threshing device.

[0039] Among them, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, the roller body 1 is in the shape of a cylinder, an elliptical cylinder or a rhombus.

[0040] The shape of the roller body 1 can be specifically set to a cylindrical, elliptical or rhombic shape as needed. For example, if the shape of the roller body 1 is cylindrical, the cylindrical roller body 1 has better stability during rotation, more uniform feeding, and improved threshing quality. Figure 3 ), quadrangular prism ( Figure 4 ), pentagonal column, hexagonal column, etc., and the threshing ribs are arranged along the rhombus of the rhombus. The size of the roller body 1 can be set according to the size of the threshing device, and the roller body 1 is a solid or hollow structure, such as a larger roller body 1 is designed as a hollow structure, and a smaller roller body 1 is designed as a solid structure.

[0041] As an implementation method, Figure 1 , Figure 2 , Figure 4 As shown, the threshing ribs 2 extend from one end to the other end along the axial direction of the roller body 1 , and at least two threshing ribs 2 are evenly arranged on the outer side wall of the roller body 1 .

[0042] The threshing rib 2 is a long strip-shaped integral structure extending from one end to the other end along the axial direction of the roller body 1. When crops are fed, the crops enter the feeding space and rotate along the roller body 1. The front end of the feeding space is sealed, and the feeding part 203 squeezes all the crops in the feeding space into the feeding port, further controlling the feeding amount, ensuring that the feeding amount of crops is moderate, further ensuring uniform feeding of crops, and further improving the threshing quality of crops in the threshing device. The threshing ribs 2 of the overall structure prevent crops from getting stuck in the intervals of the rake teeth arranged at intervals during the feeding process, and then getting entangled and accumulated on the roller body 1, causing blockage of the feed port. The threshing ribs 2 of the overall structure push the crops smoothly into the feed port of the threshing device, further improving the feeding effect of the threshing device; the threshing ribs 2 of the overall structure have a consistent pushing force on the crops, and push the crops evenly into the feed port, further preventing the crops from getting entangled on the threshing ribs 2, and then preventing the crops from getting entangled and accumulated on the roller body 1, avoiding blockage of the feed port, and being able to better assist the feeding of crops, and further improving the feeding effect of the threshing device.

[0043] As an implementation method, Figure 2 , Figure 7 As shown, a plurality of threshing ribs 2 are evenly spaced on the outer side wall of the roller body 1 along the circumferential direction and the axial direction of the roller body 1 .

[0044] Adjacent threshing ribs 2 are evenly spaced on the outer wall of the roller body 1, such as multiple threshing ribs 2 are evenly distributed on the outer wall of the roller body 1, such as seven threshing ribs 2 form a row, and four rows of threshing ribs 2 are evenly distributed on the outer wall of the roller body 1 along the circumference of the roller body 1. Among them, adjacent rows of threshing ribs 2 can be aligned or staggered. The threshing ribs 2 arranged at intervals improve the initial threshing effect.

[0045] As an implementation method, Figure 8 , Fig. 9 , Fig.10 As shown, the roller body 1 includes two relatively arranged connecting plates 4, the two connecting plates 4 are fixedly connected by a rotating shaft 5, at least two parallel fixing rods 6 are arranged between the two connecting plates 4, the fixing rods 6 are evenly arranged between the two connecting plates 4, the fixing rods 6 are parallel to the axis of the rotating shaft 5, and the threshing ribs 2 are arranged on the outer side wall of the fixing rods 6 facing away from the rotating shaft 5.

[0046] The connecting disk 4, the fixing rod 6 and the rotating shaft 5 form an open roller body 1, and there is a feeding space between the fixing rods 6, which is conducive to feeding, reduces the mass of the roller body 1, and can be applied to a larger disengaging device. The fixing rod 6 is a cylindrical tube or a square tube or an angle steel. A connecting disk 4 is also arranged between the two connecting disks 4, and the three connecting disks 4 are evenly arranged along the rotating shaft 5 to provide better support for the fixing rod 6. Among them, the two ends of the rotating shaft 5 are respectively rotatably connected to the two side walls of the feed hopper 7 of the threshing device.

[0047] Among them, Figure 8 , Fig. 9 As shown, the threshing rib 2 extends from one end to the other end along the axial direction of the fixing rod 6.

[0048] The threshing rib 2 is a long strip-shaped integral structure extending from one end to the other end along the axial direction of the roller body 1, which is beneficial for further assisting feeding.

[0049] Among them, Fig.10 As shown, the threshing ribs 2 are evenly spaced along the axial direction of the fixing rod 6 .

[0050] The threshing ribs 2 arranged at even intervals improve the initial threshing effect.

[0051] As an implementation method, Figure 1 , Figure 4 , Figure 5, Figure 8 , Fig.13 As shown, the feeding portion 203 includes a connecting end connected to the connecting portion 201 and a free end opposite to the connecting end, and a sawtooth structure 3 is provided on the end surface of the free end.

[0052] The sawtooth structure 3 provides a gripping force for the crops, which is conducive to feeding the crops into the feed port, and at the same time, the sawtooth structure 3 improves the quality of rough threshing of the crops. Furthermore, the tooth tips of the sawtooth structure 3 are smoothly arranged to reduce the crushing of the crops. The free end is the other end relative to the connection end.

[0053] Threshing device, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 , Fig.13 As shown, it includes a feed hopper 7, a shell 11 and the above-mentioned conveying primary threshing roller. The feed hopper 7 is arranged at the feed port of the shell 11 and communicates with the feed port. The roller body 1 is rotatably connected to a position in the feed hopper 7 close to the feed port.

[0054] The feed hopper 7 of the threshing device of the present application is equipped with a conveying primary threshing roller to prevent crops from being entangled and accumulated on the conveying primary threshing roller, to prevent the feed port from being blocked, to better assist the feeding of crops, and to improve the feeding effect of the threshing device; it reduces the time and number of stops for the user to remove the entangled and accumulated crops from the conveying primary threshing roller, reduces the time required for overall threshing, and improves the threshing efficiency. At the same time, the conveying primary threshing roller and the subsequent fine threshing drum of the threshing device form a multi-stage threshing mechanism. During the threshing process, the conveying primary threshing roller performs preliminary threshing on the crops, providing better threshing conditions for the subsequent fine threshing of the threshing device, and improving the threshing quality of the threshing device.

[0055] As an implementation method, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 , Fig.13As shown, the shell 11 includes a first fine threshing chamber 9, which is located on the other side of the feed port relative to the feed hopper 7 and communicates with the feed port, the first fine threshing chamber 9 is rotatably provided with a first fine threshing drum 10, the first fine threshing drum 10 and the axis of the roller body 1 are parallel, a first screen 12 is arranged below the first fine threshing drum 10, the first screen 12 is located below the feed port, a side wall of the first fine threshing chamber 9 communicating with the feed port is provided with an anti-backflow plate 8, the anti-backflow plate 8 is located above the first screen 12, the upper end of the anti-backflow plate 8 is located above the feed port, and the lower end of the anti-backflow plate 8 extends out of the upper edge of the feed port toward the first screen 12.

[0056] The backflow prevention plate 8 is set up during the threshing process. The crops and grains are thrown to the backflow prevention plate 8 under the centrifugal force of the first fine threshing drum 10. The backflow prevention plate 8 blocks the crops and grains to prevent the grains of the crops from being thrown back to the feed port under the centrifugal force of the first fine threshing drum 10 and splashing out of the feed hopper 7 from the feed port to cause damage to the user, thereby reducing the falling of grains. The crops are thrown to the backflow prevention plate 8 and collide with the backflow prevention plate 8, which is beneficial to the threshing of the crops. The setting of the backflow prevention plate 8 does not require the setting of a plastic curtain outside the feed port, which affects the feeding, further facilitating the feeding and improving the feeding efficiency. The length of the backflow prevention plate 8 is not less than the length of the feed port, the left and right ends of the backflow prevention plate 8 are aligned with the left and right ends of the feed port respectively or the left and right ends of the backflow prevention plate 8 extend out of the left and right ends of the feed port respectively, the lower end of the backflow prevention plate 8 extends vertically or obliquely toward the first screen 12 below and extends out of the upper edge of the feed port, the backflow prevention plate 8 covers the feed port in full or partially in the positive direction, there is a gap between the lower end of the backflow prevention plate 8 and the first screen 12 for feeding, the lower end of the backflow prevention plate 8 extends vertically toward the first screen 12 below, the backflow prevention plate 8 is opposite to the feed port, and the lower end of the backflow prevention plate 8 extends obliquely toward the first screen 12 below, which shall not interfere with the rotation of the first fine threshing drum 10, that is, it shall not hinder the rotation of the first fine threshing drum 10. The first fine threshing drum 10 and the roller body 1 are provided with a pulley on the shaft on one side of the pulley, and are connected to the pulley of the roller body 1 through a belt. The housing 11 includes a second fine threshing chamber 15, which is connected to the first fine threshing chamber 9. The second fine threshing chamber 15 is provided with a second fine threshing drum 13. The axes of the second fine threshing drum 13 and the first fine threshing drum 10 are parallel. A second screen is provided below the second fine threshing drum 13. The second fine threshing drum 13 and the first fine threshing drum 10 are connected to the pulley of the first fine threshing drum 10 through a belt transmission. The primary threshing roller, the first fine threshing drum 10 and the second fine threshing drum 13 are used to thresh crops in multiple stages, thereby improving the threshing quality. The grains fall from the first screen 12 and the second screen into the bottom of the housing 11, and are then discharged and collected from the discharge port at the bottom of the housing 11, and the stem residue is discharged from the residue outlet 14.

[0057] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. The conveying primary threshing roller is characterized by: The invention comprises a roller body (1), the outer wall of the roller body (1) being provided with a threshing rib, the threshing rib (2) comprising a fixedly connected connecting portion (201) and a feeding portion (203), the connecting portion (201) being fixedly connected to the roller body (1), the feeding portion (203) being arranged obliquely relative to the connecting portion (201), the inclination direction of the feeding portion (203) being opposite to the rotation direction of the roller body (1), and the side of the feeding portion (203) facing away from the roller body (1) forming a feeding surface (202).

2. The conveying primary threshing roller according to claim 1, characterized in that: The roller body (1) is in the shape of a cylinder, an elliptical cylinder or a rhombus.

3. The conveying primary threshing roller according to claim 2, characterized in that: The threshing ribs (2) extend from one end to the other end along the axial direction of the roller body (1), and at least two threshing ribs (2) are evenly arranged on the outer side wall of the roller body (1).

4. The conveying primary threshing roller according to claim 2, characterized in that: A plurality of threshing ribs (2) are evenly spaced along the circumferential and axial directions of the roller body (1) and arranged on the outer side wall of the roller body (1).

5. The conveying primary threshing roller according to claim 1, characterized in that: The roller body (1) comprises two connecting plates (4) arranged opposite to each other, the two connecting plates (4) are fixedly connected via a rotating shaft (5), at least two parallel fixing rods (6) are arranged between the two connecting plates (4), the fixing rods (6) are evenly arranged between the two connecting plates (4), the fixing rods (6) are parallel to the axis of the rotating shaft (5), and the threshing ribs (2) are arranged on the outer side wall of the fixing rod (6) facing away from the rotating shaft (5).

6. The conveying primary threshing roller according to claim 5, characterized in that: The threshing rib (2) extends from one end to the other end along the axial direction of the fixing rod (6).

7. The conveying primary threshing roller according to claim 5, characterized in that: The threshing ribs (2) are arranged at even intervals along the axial direction of the fixing rod (6).

8. The conveying primary threshing roller according to claim 1, characterized in that: The feeding portion (203) comprises a connecting end connected to the connecting portion (201) and a free end opposite to the connecting end, and the end surface of the free end is provided with a sawtooth structure (3).

9. A threshing device, characterized in that: It comprises a feed hopper (7), a shell (11) and a conveying primary threshing roller as described in any one of claims 1 to 8, wherein the feed hopper (7) is arranged at a feed port of the shell (11) and communicates with the feed port, and the roller body (1) is rotatably connected to a position in the feed hopper (7) close to the feed port.

10. The threshing device according to claim 9, characterized in that: The shell (11) comprises a first fine threshing chamber (9), the first fine threshing chamber (9) is located on the other side of the feed port relative to the feed hopper (7) and communicates with the feed port, a first fine threshing roller (10) is rotatably arranged in the first fine threshing chamber (9), the axis of the first fine threshing roller (10) and the axis of the roller body (1) are parallel, a first screen (12) is arranged below the first fine threshing roller (10), the first screen (12) is located below the feed port, a side wall of the first fine threshing chamber (9) communicating with the feed port is provided with a backflow prevention plate (8), the backflow prevention plate (8) is located above the first screen (12), the upper end of the backflow prevention plate (8) is located above the feed port, and the lower end of the backflow prevention plate (8) extends out of the upper edge of the feed port toward the first screen (12).

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