Threshing machine

Abstract

The utility model belongs to the technical field of gramineous crop threshing, and particularly provides a threshing machine with a good impurity removal effect. Under the action of a horizontal conveying auger, grains are conveyed to a grain discharging opening, under the action of a lifting conveying auger, the grains are lifted to a discharging opening in the upper end of a lifting conveying pipeline, and under the action of spiral upward thrust, the grains are rushed into the separating barrel through through holes in the side wall of the separating barrel; and the materials fall onto the dispersing surface of the material dispersing mechanism under the action of self gravity. The fan provides winnowing pressure, grains with relatively heavy weight continue to fall down from the space between the lower end of the dispersing face and the inner wall of the separating cylinder and are finally discharged from the grain receiving opening, and impurities such as weed fragments, straw fragments and empty shells with relatively light weight enter the air suction pipe and are discharged from the slag discharging opening.

Description

Technical Field

[0001] The utility model belongs to the technical field of threshing of gramineous crops, and in particular relates to a thresher. 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 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 is rotated around its own horizontal axis by 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 process of being rotated and transported, and the stems are discharged from the slag discharge port, and the grains are discharged from the discharge port. The discharge port is set at the bottom of the shell, which has the technical problem of difficult packaging operation.

[0004] The Chinese patent document with the authorization announcement number CN202535772U discloses a thresher with auger lifting and self-discharging weeds. The outlet below the grain bucket is provided with an auger lifting device to transfer the rice threshed from the roller to the outside of the thresher. By setting a double auger mechanism for use in conjunction, the rice is lifted and discharged, which is convenient for packaging operation. The grains are removed from impurities by setting an air selection mechanism. Specifically, the wind generated by the wind blade enters the position between the grain bucket and the concave arc screen, and the rice and weeds falling from the concave arc screen are air selected. The weeds are blown to the end of the grain bucket by the wind and discharged in the subsequent procedure, while the rice falls into the grain bucket due to its own weight and is discharged to the next procedure through the outlet in the grain bucket. When the weeds fall from the arc screen, due to the obstruction of the arc screen, the weeds are not easily blown to the end of the grain bucket for discharge, and there is a technical problem of poor impurity removal effect. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a thresher with good impurity removal effect.

[0006] The technical solution adopted by the present utility model to solve its technical problems is as follows: A threshing machine, comprising a housing, and a threshing drum rotatably installed in the inner cavity of the housing; one end of the housing is a feeding end, and the other end is a slag discharging end; a horizontal conveying auger is installed in the housing and located below the threshing drum; a sieve is also installed in the housing between the threshing drum and the horizontal conveying auger. A feeding port is provided at the feeding end of the housing, and a slag discharging port is provided at the slag discharging end of the housing. The feeding port and the slag discharging port are located above the sieve; a grain discharging port corresponding to the discharging end of the horizontal conveying auger is provided at the bottom of the housing; further comprising a lifting and conveying auger mechanism installed outside the housing; the lifting and conveying auger mechanism includes a lifting and conveying pipeline connected to the housing, and a lifting and conveying auger installed in the lifting and conveying pipeline; the lower feeding port of the lifting and conveying pipeline corresponds to and is connected to the grain discharging port; the threshing drum, the horizontal conveying auger, and the lifting and conveying auger are all driven by a driving mechanism; further comprising a pneumatic separation mechanism installed outside the housing; the pneumatic separation mechanism includes a separation cylinder, a material dispersion mechanism, a suction air pipe, and a blower;

[0007] The separation cylinder is vertically installed on one side of the housing. The top end of the separation cylinder is a suction air inlet, and the lower end is a grain receiving port; the material dispersion mechanism is installed in the separation cylinder and has an inclined dispersion surface; there is a spacing for the grains to fall between the lower end of the dispersion surface and the inner wall of the separation cylinder;

[0008] The upper discharging port of the lifting and conveying pipeline is connected to a through hole on the side wall of the separation cylinder and is located above the dispersion surface; one end of the suction air pipe is a connection port, and the other end is a slag discharging port; the connection port of the suction air pipe is connected to the suction air inlet of the separation cylinder, and the blower is installed on the suction air pipe and is used to provide pneumatic separation pressure.

[0009] Further, the material dispersion mechanism includes a dispersion cone with a smaller upper end and a larger lower end, and the upper surface of the dispersion cone serves as the dispersion surface;

[0010] The dispersion cone is installed in the separation cylinder through a bracket.

[0011] Further, the material dispersion mechanism further includes a support cone with a larger upper end and a smaller lower end. The dispersion cone is located above the support cone, and the lower end of the dispersion cone is connected to the upper end of the support cone.

[0012] Further, the taper of the dispersion cone is smaller than the taper of the support cone.

[0013] Further, the bracket includes a cross bar and a vertical bar;

[0014] Both ends of the cross bar are connected to the side wall of the separation cylinder; the upper end of the vertical bar is connected to the middle of the cross bar and is located below the cross bar;

[0015] The vertical rod is installed through the through hole at the top of the dispersion cone and the through hole at the bottom of the support cone; the vertical rod is provided with a limiting ring plate located above the dispersion cone and abutting against the top of the dispersion cone; the vertical rod is also provided with a limiting nut located below the support cone and abutting against the bottom end of the support cone.

[0016] Furthermore, a vertically arranged adjustment hole is provided on the side wall of the separation cylinder; two adjustment holes are provided, and the two adjustment holes are respectively located on both sides of the axial direction of the separation cylinder;

[0017] One end of the cross bar extends from one of the adjustment holes to form a first mounting section, and the other end of the cross bar extends from the other adjustment hole to form a second mounting section. Nuts for locking the separation cylinder and the cross bar are installed on both the first mounting section and the second mounting section.

[0018] Further, the threshing drum comprises a threshing knife tooth rod and a mounting plate;

[0019] The mounting discs are arranged vertically, and two of them are arranged at intervals along the direction from the feeding end to the slag discharge end of the shell; a plurality of threshing knife tooth rods are provided, and the plurality of threshing knife tooth rods are evenly distributed between the two mounting discs along the circumference of the rotating shaft; the mounting disc is connected to the shell through the rotating shaft, the mounting disc and the rotating shaft are coaxially installed, and the driving mechanism is connected to the rotating shaft in a transmission manner;

[0020] The threshing knife tooth rod comprises a knife tooth rod parallel to the rotating shaft, and a threshing knife arranged in the circumferential direction of the knife tooth rod; one end of the knife tooth rod is connected to one of the mounting plates, and the other end is connected to the other mounting plate;

[0021] A vertically arranged flow guide plate is connected to the top inner wall of the shell, and a distance is provided between the flow guide plate and the outer end of the threshing knife;

[0022] The guide plate is arranged along the spiral direction of the axial direction of the rotating shaft; the guide plates are provided in plurality, and the guide plates are arranged in pairs at intervals along the axial direction of the rotating shaft.

[0023] Furthermore, a cutting knife is provided on the inner wall of the shell, and the cutting knife is located adjacent to and above the slag outlet; a plurality of the cutting knives are provided, and the plurality of the cutting knives are arranged in pairs along the axial direction of the rotating shaft.

[0024] Furthermore, the housing includes a lower housing with an opening facing upward, and an upper cover installed at the opening of the lower housing;

[0025] The guide plate is arranged on the inner wall of the upper cover;

[0026] The horizontal conveying auger and the screen are installed in the lower shell;

[0027] The rotating shaft is rotatably connected to the side wall of the lower housing;

[0028] The feeding port and the slag discharging port are formed on the lower housing, and the cutting knife is installed on the lower housing; the lifting and conveying pipeline is connected to the lower housing.

[0029] Furthermore, the upper discharge port of the lifting and conveying pipeline is connected to a diversion pipe located on one side of itself. The diversion pipe extends into the separation cylinder through a through hole on the side wall of the separation cylinder, and the discharge port of the diversion pipe is located above the dispersion surface.

[0030] Compared with the prior art, the beneficial effects of the present utility model are as follows: The present utility model provides a threshing machine with good impurity removal effect. Under the action of the horizontal conveying auger, the grains are conveyed to the grain discharge port. Under the action of the lifting and conveying auger, the grains are lifted to the upper discharge port of the lifting and conveying pipeline. Under the action of the helical upward thrust, the grains rush into the separation cylinder through the through hole on the side wall of the separation cylinder, and fall onto the dispersion surface of the material dispersion mechanism under the action of their own gravity. The fan provides the air separation pressure. The relatively heavier grains continue to fall from the gap between the lower end of the dispersion surface and the inner wall of the separation cylinder, and finally are discharged from the grain receiving port, while the relatively lighter impurities such as weed fragments, straw fragments, and empty shells enter the suction air pipe and are discharged from the slag discharge port. It also has the advantages of convenient operation and easy popularization. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic side view structure of the present utility model;

[0032] Figure 2 is a schematic top view structure of the feeding hopper, driving motor, horizontal conveying auger, lifting and conveying auger mechanism, suction air pipe and fan of the present utility model;

[0033] Reference numerals: 1 - housing; 101 - lower housing; 102 - upper cover; 1021 - diversion plate; 103 - feeding hopper; 104 - slag discharge port; 105 - cutting knife; 2 - threshing drum; 201 - mounting disc; 202 - cutter bar; 203 - threshing knife; 204 - rotating shaft; 3 - horizontal conveying auger; 4 - lifting and conveying auger mechanism; 401 - lifting and conveying pipeline; 402 - lifting and conveying auger; 403 - diversion pipe; 5 - separation cylinder; 501 - grain receiving port; 6 - dispersion cone; 7 - support cone; 8 - suction air pipe; 9 - fan; 10 - cross bar; 11 - vertical bar; 12 - screen; 13 - driving motor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0035] Thresher, comprising a housing 1, and a threshing cylinder 2 rotatably installed in the inner cavity of the housing 1; one end of the housing 1 is the feeding end, and the other end is the slag discharging end; a horizontal conveying auger 3 is installed in the housing 1 and located below the threshing cylinder 2; a screen 12 is also installed in the housing 1 and located between the threshing cylinder 2 and the horizontal conveying auger 3, a feeding port is provided at the feeding end of the housing 1, a slag discharging port 104 is provided at the slag discharging end of the housing 1, and the feeding port and the slag discharging port 104 are located above the screen 12; a grain discharging port corresponding to the discharging end of the horizontal conveying auger 3 is provided at the bottom of the housing 1; further comprising a lifting and conveying auger mechanism 4 installed outside the housing 1; the lifting and conveying auger mechanism 4 comprises a lifting and conveying pipeline 401 connected to the housing 1, and a lifting and conveying auger 402 installed in the lifting and conveying pipeline 401; the lower feeding port of the lifting and conveying pipeline 401 is arranged corresponding to and communicated with the grain discharging port; the threshing cylinder 2, the horizontal conveying auger 3 and the lifting and conveying auger 402 are all driven by a driving mechanism.

[0036] Further comprising a winnowing and separating mechanism installed outside the housing 1; the winnowing and separating mechanism comprises a separating cylinder 5, a material dispersing mechanism, an air suction pipe 8 and a fan 9; the separating cylinder 5 is vertically installed on one side of the housing 1, the top end of the separating cylinder 5 is the air suction port, and the lower end is the grain receiving port 501; the material dispersing mechanism is installed in the separating cylinder 5 and has an inclined dispersing surface; there is a spacing for the grains to fall between the lower end of the dispersing surface and the inner wall of the separating cylinder 5; the upper discharging port of the lifting and conveying pipeline 401 is connected to a through hole on the side wall of the separating cylinder 5 and is located above the dispersing surface; one end of the air suction pipe 8 is the connection port, and the other end is the slag discharging port; the connection port of the air suction pipe 8 is connected to the air suction port of the separating cylinder 5, and the fan 9 is installed on the air suction pipe 8 and is used for providing winnowing pressure.

[0037] Currently, a feed hopper 103 is installed at the feed inlet of the housing 1, and crops enter the housing 1 through the feed hopper 103. The grain discharge port is located below the screen 12. The drive mechanism drives the threshing cylinder 2 to rotate around its own axis, and the crops are spirally conveyed and threshed in the housing 1 along the direction from the feed end to the residue discharge end. After the crops are threshed, straw and grains are formed. The straw is discharged from the residue outlet 104, and the grains fall to the bottom of the housing 1 through the screen 12. Under the action of the horizontal conveying auger 3, the grains are conveyed to the grain discharge port. Under the action of the lifting conveying auger 402, the grains are lifted to the upper discharge port of the lifting conveying pipe 401. Under the action of the upward spiral thrust, the grains rush into the separation cylinder 5 through the through holes on the side wall of the separation cylinder 5 and fall onto the dispersion surface of the material dispersion mechanism under their own gravity. The blower 9 provides the air separation pressure. The relatively heavier grains continue to fall from the gap between the lower end of the dispersion surface and the inner wall of the separation cylinder 5 and are finally discharged from the grain receiving port 501, while the relatively lighter impurities such as weed fragments, straw fragments, and empty shells enter the suction pipe 8 and are discharged from the slag discharge port. Compared with the background technology, it has the technical advantage of good impurity removal effect.

[0038] Specifically, the lower feed inlet of the lifting conveying pipe 401 is welded to the grain discharge port of the housing 1. The upper discharge port of the lifting conveying pipe 401 is connected to a diversion pipe 403 located on one side of itself. The diversion pipe 403 extends into the separation cylinder 5 through the through hole on the side wall of the separation cylinder 5, and the discharge port of the diversion pipe 403 is located above the dispersion surface.

[0039] The separation cylinder 5 can be installed through a frame. Preferably, the separation cylinder 5 is welded to the diversion pipe 403.

[0040] Preferably, the axis of the horizontal conveying auger 3 is perpendicular to the axis of the lifting conveying auger 402.

[0041] Preferably, the slag discharge port of the suction pipe 8 is adjacent to the residue discharge end of the housing 1 and is located at the lower part of the housing 1. The blower 9 is connected to the housing 1 and is close to the slag discharge port of the suction pipe 8. This is convenient for the operator to collect impurities such as weed fragments, straw fragments, and empty shells.

[0042] The material dispersion mechanism can be an inclined flat plate structure, the upper end of which is welded to the inner wall of the separation cylinder 5, and there is a gap for the grains to fall between the lower end of it and the inner wall of the separation cylinder 5. Preferably, the material dispersion mechanism includes a dispersion cone 6 with a smaller upper end and a larger lower end, and the upper surface of the dispersion cone 6 serves as the dispersion surface; the dispersion cone 6 is installed in the separation cylinder 5 through a bracket. The bracket provides stable installation support for the dispersion cone 6.

[0043] As a further preference, the material dispersion mechanism further includes a support cone 7 with a larger upper end and a smaller lower end. The dispersion cone 6 is located above the support cone 7, and the lower end of the dispersion cone 6 is connected to the upper end of the support cone 7. Specifically, the lower end of the dispersion cone 6 is connected to the upper end of the support cone 7 by welding. The connection between the dispersion cone 6 and the support cone 7 improves the structural stability of the dispersion cone 6.

[0044] As a preferred embodiment, the taper of the dispersion cone 6 is smaller than that of the support cone 7. This can reduce the overall height of the dispersion cone 6 and the support cone 7.

[0045] The bracket has various structural forms. Preferably, the bracket includes a cross bar 10 and a vertical bar 11. Both ends of the cross bar 10 are connected to the side wall of the separation cylinder 5. The upper end of the vertical bar 11 is connected to the middle of the cross bar 10 and is located below the cross bar 10. The vertical bar 11 is installed through the through holes at the top of the dispersion cone 6 and the through holes at the bottom of the support cone 7. A limiting ring plate is provided on the vertical bar 11 above the dispersion cone 6 and abuts against the top end of the dispersion cone 6. A limiting nut is also installed on the vertical bar 11 below the support cone 7 and abuts against the bottom end of the support cone 7. Both ends of the cross bar 10 can be connected to the side wall of the separation cylinder 5 by welding, and the upper end of the vertical bar 11 is connected to the cross bar 10 by welding. The limiting ring plate limits the upper end of the dispersion cone 6, and the limiting nut limits the bottom end of the support cone 7. Specifically, a threaded structure is provided on the vertical bar 11 for threaded cooperation with the limiting nut.

[0046] As a preferred embodiment, adjustment holes are vertically provided on the side wall of the separation cylinder 5. There are two adjustment holes, and the two adjustment holes are respectively located on both sides of the axis of the separation cylinder 5. One end of the cross bar 10 extends out from one of the adjustment holes and forms a first installation section, and the other end of the cross bar 10 extends out from the other adjustment hole and forms a second installation section. Nuts for locking the separation cylinder 5 and the cross bar 10 are installed on both the first installation section and the second installation section. By providing adjustment holes on the side wall of the separation cylinder 5, the cross bar 10 can be vertically installed at a required height according to actual needs, and then fixed in position by locking the nuts with the separation cylinder 5.

[0047] The threshing cylinder 2 has various structural forms and can adopt the structures in the prior art. Preferably, the threshing cylinder 2 includes threshing cutter bars and mounting discs 201; the mounting discs 201 are arranged vertically and there are two of them spaced along the direction from the feed end to the slag discharge end of the housing 1; several threshing cutter bars are provided, and several threshing cutter bars are circumferentially arranged between the two mounting discs 201 along the axis 204; the mounting discs 201 are connected to the housing 1 through the axis 204, the mounting discs 201 and the axis 204 are coaxially installed, and the driving mechanism is in transmission connection with the axis 204; the threshing cutter bar includes a cutter bar 202 parallel to the axis 204 and threshing cutters 203 arranged in the circumferential direction of the cutter bar 202; one end of the cutter bar 202 is connected to one of the mounting discs 201 and the other end is connected to the other mounting disc 201; a vertically arranged guide plate 1021 is connected to the inner wall at the top of the housing 1, and there is a spacing between the guide plate 1021 and the outer end of the threshing cutter 203; the guide plate 1021 is arranged along the spiral direction of the axis 204; there are multiple guide plates 1021, and multiple guide plates 1021 are arranged at intervals of two along the axis of the axis 204.

[0048] The mounting disc 201 is a plate-like structure, preferably a circular plate. The end of the cutter bar 202 is connected to the mounting disc 201 by welding or through a threaded structure. The threshing cutters 203 are welded and fixed on the cutter bar 202, and there are multiple threshing cutters 203 evenly arranged along the axis of the cutter bar 202. The axis 204 is welded to the mounting disc 201, and the driving mechanism drives the axis 204 to rotate around its own axis, thereby driving the mounting disc 201 and the threshing cutters 203 to rotate around the axis of the axis 204. The threshing cutters 203 play a role in separating the straw from the grains. The upper end of the guide plate 1021 is welded to the inner wall of the upper cover 102. The guide plate 1021 not only guides the spiral transportation of the crops, but also plays a certain cutting role to separate the straw from the grains.

[0049] Preferably, a cutting knife 105 is arranged on the inner wall of the housing 1, and the cutting knife 105 is adjacent above the slag outlet 104; there are multiple cutting knives 105, and multiple cutting knives 105 are arranged at intervals of two along the axis of the axis 204. The cutting knife 105 is welded to the housing 1. The cutting knife 105 can cut off the straw passing through from the slag outlet 104 and can further remove the grains remaining on the straw.

[0050] The housing 1 can be an integral structure. Preferably, the housing 1 includes a lower housing 101 with an upward opening, and an upper cover 102 installed at the opening of the lower housing 101; the deflector 1021 is arranged on the inner wall of the upper cover 102; the horizontal conveying auger 3 and the screen 12 are installed in the lower housing 101; the rotating shaft 204 is rotatably connected to the side wall of the lower housing 101; the feed inlet and the slag outlet 104 are opened on the lower housing 101, and the cutting knife 105 is installed on the lower housing 101; the lifting and conveying pipeline 401 is connected to the lower housing 101. The feed hopper 101 is also connected to the lower housing 101.

[0051] Specifically, the end of the upper cover 102 on one axial side of the threshing cylinder 2 is connected to the lower housing 101 through a hinge; the end of the upper cover 102 on the other axial side of the threshing cylinder 2 is detachably connected to the lower housing 101 through a buckle.

[0052] Specifically, the drive mechanism includes a drive motor 13 and a transmission structure. The drive motor 13 is installed outside the housing 1 and near the feed end. The drive motor 13 drives the rotating shaft 204 to rotate around its own axis, drives the horizontal conveying auger 3 to rotate around its own axis, and drives the blades of the blower 9 to rotate through the cooperation of a pulley and a belt. The drive motor 13 drives the lifting and conveying auger 402 to rotate around its own axis through a gear set.

[0053] The embodiments of the specific implementation manners are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Any equivalent changes made according to the structure, shape, and principle of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A thresher, comprising a shell (1), and a threshing drum (2) rotatably mounted in an inner cavity of the shell (1); one end of the shell (1) is a feed end, and the other end is a slag discharge end; a horizontal conveying auger (3) located below the threshing drum (2) is mounted in the shell (1); a screen (12) located between the threshing drum (2) and the horizontal conveying auger (3) is also mounted in the shell (1); a feed inlet is provided at the feed end of the shell (1), and a slag discharge outlet (104) is provided at the slag discharge end of the shell (1); the feed inlet and the slag discharge outlet (104) are located above the screen (12); the shell (1) The bottom of the housing (1) is provided with a seed discharge outlet arranged corresponding to the discharge end of the horizontal conveying auger (3); the housing (1) also includes a lifting and conveying auger mechanism (4) installed outside the housing (1); the lifting and conveying auger mechanism (4) includes a lifting and conveying pipeline (401) connected to the housing (1), and a lifting and conveying auger (402) installed in the lifting and conveying pipeline (401); the lower end feed port of the lifting and conveying pipeline (401) is arranged corresponding to and communicated with the seed discharge outlet; the threshing drum (2), the horizontal conveying auger (3) and the lifting and conveying auger (402) are all driven by a driving mechanism; characterized in that: It also includes an air separation mechanism installed outside the housing (1); the air separation mechanism includes a separation cylinder (5), a material dispersion mechanism, an air suction pipe (8) and a fan (9); The separation cylinder (5) is vertically mounted on one side of the housing (1); the top end of the separation cylinder (5) is an air suction port, and the bottom end is a grain receiving port (501); the material dispersion mechanism is mounted in the separation cylinder (5) and has an inclined dispersion surface; a gap is provided between the bottom end of the dispersion surface and the inner wall of the separation cylinder (5) for the grains to fall; The upper end discharge port of the lifting and conveying pipeline (401) is connected to the through hole on the side wall of the separation cylinder (5) and is located above the dispersion surface; one end of the suction pipe (8) is a connecting port, and the other end is a slag discharge port; the connecting port of the suction pipe (8) is connected to the suction port of the separation cylinder (5), and the fan (9) is installed on the suction pipe (8) and is used to provide air selection pressure.

2. The thresher according to claim 1, characterized in that: The material dispersing mechanism comprises a dispersing cone (6) with a small upper end and a large lower end, and the upper surface of the dispersing cone (6) serves as the dispersing surface; The dispersion cone (6) is installed in the separation cylinder (5) via a bracket.

3. The thresher according to claim 2, characterized in that: The material dispersing mechanism further comprises a supporting cone (7) with a larger upper end and a smaller lower end. The dispersing cone (6) is located above the supporting cone (7), and the lower end of the dispersing cone (6) is connected to the upper end of the supporting cone (7).

4. The thresher according to claim 3, characterized in that: The taper of the dispersion cone (6) is smaller than the taper of the support cone (7).

5. The thresher according to claim 3, characterized in that: The support comprises a crossbar (10) and a vertical bar (11); Both ends of the cross bar (10) are connected to the side wall of the separation cylinder (5); the upper end of the vertical bar (11) is connected to the middle of the cross bar (10) and is located below the cross bar (10); The vertical rod (11) is installed through the through hole at the top of the dispersion cone (6) and the through hole at the bottom of the support cone (7); the vertical rod (11) is provided with a limiting ring plate located above the dispersion cone (6) and abutting against the top of the dispersion cone (6); the vertical rod (11) is also provided with a limiting nut located below the support cone (7) and abutting against the bottom end of the support cone (7).

6. The thresher according to claim 5, characterized in that: A vertically arranged adjustment hole is provided on the side wall of the separation cylinder (5); two adjustment holes are provided, and the two adjustment holes are respectively located on two sides of the axial direction of the separation cylinder (5); One end of the cross bar (10) extends out from one of the adjustment holes to form a first mounting section, and the other end of the cross bar (10) extends out from the other adjustment hole to form a second mounting section. Nuts for locking the separation cylinder (5) and the cross bar (10) are installed on both the first mounting section and the second mounting section.

7. The thresher according to claim 1, characterized in that: The threshing drum (2) comprises a threshing blade tooth rod and a mounting plate (201); The mounting discs (201) are arranged vertically and are provided with two of them at intervals along the direction from the feed end to the slag discharge end of the shell (1); a plurality of threshing blade tooth rods are provided, and the plurality of threshing blade tooth rods are evenly distributed between the two mounting discs (201) along the circumference of the rotating shaft (204); the mounting disc (201) is connected to the shell (1) via the rotating shaft (204), the mounting disc (201) and the rotating shaft (204) are coaxially mounted, and the driving mechanism is in driving connection with the rotating shaft (204); The threshing blade tooth rod comprises a blade tooth rod (202) parallel to the rotating shaft (204), and a threshing knife (203) arranged in the circumferential direction of the blade tooth rod (202); one end of the blade tooth rod (202) is connected to one of the mounting plates (201), and the other end is connected to the other mounting plate (201); A vertically arranged flow guide plate (1021) is connected to the top inner wall of the shell (1), and a distance exists between the flow guide plate (1021) and the outer end of the threshing knife (203); The guide plate (1021) is arranged along the axial spiral direction of the rotating shaft (204); a plurality of guide plates (1021) are provided, and the plurality of guide plates (1021) are arranged in pairs along the axial direction of the rotating shaft (204).

8. The thresher according to claim 7, characterized in that: A cutting knife (105) is provided on the inner wall of the shell (1), and the cutting knife (105) is located adjacent to and above the slag outlet (104); a plurality of the cutting knives (105) are provided, and the plurality of the cutting knives (105) are arranged in pairs along the axial direction of the rotating shaft (204) at intervals.

9. The thresher according to claim 8, characterized in that: The housing (1) comprises a lower housing (101) with an opening facing upward, and an upper cover (102) mounted at the opening of the lower housing (101); The guide plate (1021) is arranged on the inner wall of the upper cover (102); The horizontal conveying auger (3) and the screen (12) are installed in the lower shell (101); The rotating shaft (204) is rotatably connected to the side wall of the lower shell (101); The feed port and slag outlet (104) are opened on the lower shell (101), and the cutting knife (105) is installed on the lower shell (101); the lifting and conveying pipeline (401) is connected to the lower shell (101).

10. The thresher according to claim 1, characterized in that: The upper end discharge port of the lifting and conveying pipeline (401) is connected to a guide pipe (403) located on one side thereof, and the guide pipe (403) extends into the separation cylinder (5) through a through hole on the side wall of the separation cylinder (5), and the discharge port of the guide pipe (403) is located above the dispersion surface.

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