Combined type oat threshing device and method

Abstract

The invention discloses a combined type oat threshing device and method, and relates to the field of agricultural machinery. A combined type oat threshing device comprises a machine box, a threshing cavity, a hulling cavity and a screening cavity which are communicated with one another are formed in the machine box, the threshing cavity is formed in the position, close to a feeding port, of the machine box, and the screening cavity is formed in the position, close to a discharging port, of the machine box; compared with the prior art, when oat needs to be threshed, integrated threshing treatment can be carried out on the oat, clean oat seeds can be directly obtained, oat hulls separated from the oat seeds and dust can be collected, and therefore only clean gas is blown out, and the oat seeds can be separated from the oat hulls. The situation that a large amount of oat hulls and ash are raised on a threshing site, the oat threshing environment is poor, and the bodies of threshing personnel are hurt is avoided, dust adhering to oat seeds can be reduced, and the quality of the oat seeds is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of agricultural machinery and equipment, and in particular relates to a composite oat threshing device and method. Background Art

[0002] Oats are one of the main grain crops in my country and a high-quality grain. They are grown in mountainous areas, plateaus and the cold and high altitude areas in the north. They have high edible, medicinal and feed value and also have beauty effects. Harvesting oats is a time-sensitive task. Once mature, they must be harvested in time, usually in early September each year. No delay is allowed, otherwise the grains will fall off, resulting in a high yield but a low harvest.

[0003] When oats are harvested and threshed by an oat thresher, the existing oat thresher may blow up a large amount of oat husks and ash during the threshing process because the hulled oat seeds and oat husks need to be separated by air. This makes the threshing environment of the oats poor, which not only has a certain impact on the health of the threshers, but also may cause dust on the oat seeds. In view of this, the present invention is specially proposed. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a composite oat threshing device that can overcome the above problems or at least partially solve the above problems.

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: a composite oat threshing device, comprising: a chassis, wherein a threshing chamber, a shelling chamber and a screening chamber are provided in the chassis, wherein the threshing chamber is arranged at a position of the chassis near the feed inlet, and the screening chamber is arranged at a position of the chassis near the discharge outlet; a threshing mechanism for separating the oats is installed in the threshing chamber; a shelling mechanism for shelling the oat grains is installed in the shelling chamber; a screening chamber for screening the oat seeds and oat husks Mechanism, installed in the screening chamber; a first guide plate is fixedly connected between the threshing mechanism and the shelling mechanism in the chassis; a collecting box is installed on the chassis; a filter barrel is installed in the collecting box and is connected with the air outlet of the collecting box; a dust outlet is provided above the chassis near the screening chamber, and a guide chamber is provided near the dust outlet of the screening chamber; a dust suction fan is installed on the collecting box, the air inlet of the dust suction fan is connected with the dust outlet of the chassis, and the air outlet of the dust suction fan is connected with the air inlet of the collecting box.

[0006] Furthermore, the threshing mechanism includes a first rotating shaft, a threshing roller, a threshing bar and a motor. The first rotating shaft is symmetrically rotatably connected in the threshing chamber. The threshing roller is fixedly connected to the first rotating shaft. The threshing bars are circumferentially equidistantly arranged and fixed on the threshing roller. The threshing bars on the two threshing rollers are staggered. The motor is fixedly connected to the chassis and is fixedly connected to one of the ends of the first rotating shafts. The ends of the two first rotating shafts away from the motors extend out of the chassis and are fixedly connected with gears, and the two gears are meshed with each other.

[0007] Furthermore, the shelling mechanism includes a second rotating shaft and a kneading airbag ring, the second rotating shaft is rotatably connected in the shelling cavity, the kneading airbag ring is fixedly connected to the second rotating shaft and slides against the inner wall of the shelling cavity, and a pulley is fixedly connected to one end of the second rotating shaft close to the gear and the gear far away from the motor, and the two pulleys are connected by a belt.

[0008] Furthermore, the screening mechanism includes a hair dryer, a blow hood and a second guide plate, the hair dryer is installed on a side of the chassis away from the screening chamber, the blow hood is embedded in the chassis near the screening chamber, the second guide plate is fixedly installed in the screening chamber, the air outlet of the blow hood faces the second guide plate, and the air outlet of the hair dryer is connected to the air inlet of the blow hood.

[0009] In order to facilitate opening of the collecting box and cleaning of the oat husks and dust in the collecting box and on the surface of the filter barrel, a through opening is further provided at the upper end of the collecting box, a box cover is threadedly connected to the through opening of the collecting box, and the filter barrel is mounted on the box cover.

[0010] In order to facilitate the removal of oatmeal husks and dust attached to the filter barrel under the action of centrifugal force, further, a hollow bearing is rotatably connected to the box cover, the filter barrel is fixedly connected to the hollow bearing, a blade group is fixedly connected to the filter barrel, and the air outlet of the dust suction fan extends into the collection box and faces the blade group.

[0011] In order to facilitate the recoil effect on the filter holes on the filter barrel, further, the inner lower end of the collecting box is slidably connected to a movable plate, and the four corners of the bottom of the movable plate are fixedly connected to the first telescopic spring, the lower end of the first telescopic spring is fixedly connected to the bottom of the collecting box, and the inner lower end of the collecting box is fixedly connected to a rangefinder, the detection end of the rangefinder faces the movable plate, and an air storage box is installed at the lower end of the collection box, and a plurality of first injection pipes are equidistantly connected to the air storage box at a circle, and the first injection pipe runs through the movable plate, and a through port used in conjunction with the first injection pipe is opened at the bottom of the filter barrel, and the filter barrel is conically designed, and a first solenoid valve is installed in the first injection pipe.

[0012] In order to facilitate the knocking and vibration of the filter barrel and further improve the effect of removing oatmeal husks and dust on the filter barrel, further, a second jet pipe is connected to the middle position of the upper end of the air storage box, and the second jet pipe runs through the movable plate. The bottom of the filter barrel near the second jet pipe is fixedly connected to a receiving plate through a second telescopic spring, and a plurality of impact heads are fixedly connected to one side of the receiving plate close to the filter barrel at equal intervals in a circle, and a second solenoid valve is installed in the second jet pipe.

[0013] In order to prevent the oat husks and dust entering the collection box from entering the air storage box through the first air jet pipe and the second air jet pipe, further, filters are installed at the air jet ports of the first air jet pipe and the second air jet pipe.

[0014] A method for using a composite oat threshing device mainly comprises the following steps:

[0015] S1: First, start the threshing mechanism, shelling mechanism, screening mechanism and dust suction fan on the chassis;

[0016] S2: Then the separation personnel can hold the oat stalk and put the oat head of the oat between the two threshing rollers through the feeding port of the chassis. Then the mature oat grains on the oat head will be separated from the oat head under the action of the threshing mechanism and fall along the first guide plate to the hulling chamber. Then the hulling mechanism will rub the oat grains to rub off the oat husks on the oat seeds to separate them.

[0017] S3: When the oat seeds and oat husks separated by kneading fall into the screening chamber, the hair dryer will blow air to the oat seeds and oat husks through the blow hood. Due to the different masses of the oat seeds and oat husks, the heavier oat seeds will flow down along the second guide plate to the bottom of the screening chamber and flow out through the discharge port, while the lighter oat husks and some dust will float upward along the second guide plate and be sucked into the collection box by the dust suction fan.

[0018] S4: The gas entering the collection box will pass through the filter holes of the filter barrel and be discharged from the collection box, while the oatmeal husks and dust will be intercepted by the filter barrel and remain in the collection box;

[0019] S5: After the separation mechanism removes the oat grains from one bundle of oats, the next bundle of oats can be extended between the two threshing rollers, and the threshing operation can be continuously performed by repeating this process.

[0020] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art: by installing a threshing mechanism, a shelling mechanism, a separation mechanism, a collecting box, a dust suction fan, a filter barrel and other components on the chassis, the present invention can, when it is necessary to thresh the oats, not only can the oats be threshed in an integrated manner to directly obtain clean oat seeds, but also the oat husks and dust separated from the oat seeds can be collected and processed, so that only relatively clean gas is blown out, thereby avoiding a large amount of oat husks and ash being raised at the threshing site, making the threshing environment of the oats poor and causing physical harm to the threshing personnel, and can also reduce the dust adhering to the oat seeds to ensure the quality of the oat seeds.

[0021] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In the attached picture:

[0023] Figure 1 It is a front view schematic diagram of a composite oat threshing device proposed by the present invention;

[0024] Figure 2 A rear view schematic diagram of a composite oat threshing device proposed by the present invention;

[0025] Figure 3 This is a front view structural schematic diagram of a composite oat threshing device proposed by the present invention;

[0026] Figure 4 A partial structural schematic diagram of a composite oat threshing device proposed by the present invention;

[0027] Figure 5 This is a partial structural schematic diagram of a composite oat threshing device proposed by the present invention;

[0028] Figure 6 A composite oat threshing device proposed by the present invention Figure 5 Schematic diagram of the structure of part A.

[0029] In the figure: 1, chassis; 101, threshing chamber; 102, shelling chamber; 103, screening chamber; 104, first guide plate; 105, hair dryer; 106, blowing hood; 107, second guide plate; 108, guide chamber; 2, first rotating shaft; 201, threshing roller; 202, threshing bar; 203, motor; 204, gear; 205, pulley; 3, second rotating shaft; 301, kneading airbag ring; 4, Collecting box; 401, box cover; 402, hollow bearing; 403, filter barrel; 404, blade group; 405, dust suction fan; 406, moving plate; 407, first telescopic spring; 408, rangefinder; 409, air storage box; 4010, first jet pipe; 4011, second jet pipe; 4012, filter net; 4013, second telescopic spring; 4014, receiving plate; 4015, impact head. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0031] Embodiment 1:

[0032] Reference Figure 1-Figure 6 A composite oat threshing device comprises: a chassis 1, wherein a threshing chamber 101, a shelling chamber 102 and a screening chamber 103 are provided in the chassis 1, wherein the threshing chamber 101 is arranged at a position of the chassis 1 close to a feeding port, and the screening chamber 103 is arranged at a position of the chassis 1 close to a discharging port; a threshing mechanism for separating oats is installed in the threshing chamber 101; a shelling mechanism for shelling oat grains is installed in the shelling chamber 102; a screening mechanism for screening oat seeds and oat husks is installed in the screening chamber 103; the chassis 1 is fixedly connected with a first guide plate 104 between the threshing mechanism and the shelling mechanism; a collecting box 4 is installed on the chassis 1; a filter barrel 403 is installed in the collecting box 4 and is connected with the air outlet of the collecting box 4; a dust exhaust port is opened above the chassis 1 near the screening chamber 103, and a guide chamber 108 is opened near the dust exhaust port of the screening chamber 103; a dust suction fan 405 is installed on the collecting box 4, the air inlet of the dust suction fan 405 is connected with the dust exhaust port of the chassis 1, and the air outlet of the dust suction fan 405 is connected with the air inlet of the collecting box 4.

[0033] The threshing mechanism includes a first rotating shaft 2, a threshing roller 201, a threshing bar 202 and a motor 203. The first rotating shaft 2 is symmetrically rotatably connected in the threshing chamber 101. The threshing roller 201 is fixedly connected to the first rotating shaft 2. The threshing bars 202 are fixed on the threshing roller 201 in a circumferentially equidistant arrangement. The threshing bars 202 on the two threshing rollers 201 are staggered. The motor 203 is fixedly connected to the chassis 1 and is fixedly connected to one end of the first rotating shaft 2. The ends of the two first rotating shafts 2 away from the motor 203 extend out of the chassis 1 and are fixedly connected with gears 204. The two gears 204 are meshed with each other.

[0034] The shelling mechanism includes a second rotating shaft 3 and a kneading air bag circle 301. The second rotating shaft 3 is rotatably connected in the shelling chamber 102. The kneading air bag circle 301 is fixedly connected to the second rotating shaft 3 and slides against the inner wall of the shelling chamber 102. A pulley 205 is fixedly connected to one end of the second rotating shaft 3 close to the gear 204 and the gear 204 far away from the motor 203. The two pulleys 205 are connected by a belt.

[0035] The screening mechanism includes a hair dryer 105, a blow hood 106 and a second guide plate 107. The hair dryer 105 is installed on a side of the chassis 1 away from the screening chamber 103. The blow hood 106 is embedded in the chassis 1 near the screening chamber 103. The second guide plate 107 is fixedly installed in the screening chamber 103. The air outlet of the blow hood 106 faces the second guide plate 107, and the air outlet of the hair dryer 105 is connected to the air inlet of the blow hood 106.

[0036] When the harvested oats need to be threshed, the staff first pushes the device next to the oats, then starts the device, and then holds the oat rod, and puts the oat head of the oat between the two threshing rollers 201 through the feed port of the chassis 1, and then the rotating threshing bar 202 can take off the oat grains on the oat head, and drop them along the first guide plate 104 to the shelling chamber 102, and then the kneading air bag ring 301 rolling in the shelling chamber 102 will knead the oat grains, so that the oat husks on the oat seeds can be kneaded off and separated. When the kneaded and separated oat seeds and oat husks fall into the screening chamber 103, the hair dryer 105 will blow air to the oat seeds and oat husks through the blow hood 106. Due to the different qualities of the oat seeds and the oat husks, the heavier oat seeds will be moved along the second guide plate 104. The plate 107 flows down to the bottom of the screening chamber 103 and flows out through the discharge port. The staff only needs to place a collection box at the discharge port to collect the threshed oat seeds, and the lighter oat husks and some dust will float upward along the second guide plate 107 and be sucked into the collection box 4 by the dust suction fan 405, and then the oat husks and dust will be collected in the collection box 4, and the gas entering the collection box 4 will pass through the filter holes of the filter barrel 403 and be discharged from the collection box 4, while the oat husks and dust will be intercepted by the filter barrel 403 and remain in the collection box 4. The staff only needs to clean the oat husks and dust in the collection box 4 regularly. When the separation mechanism removes the oat grains on a bundle of oats, the next bundle of oats can be extended between the two threshing rollers 201. This can be repeated to continuously thresh the oats.

[0037] Embodiment 2:

[0038] Reference Figure 1-Figure 6 A composite oat threshing device is basically the same as Example 1. Furthermore, a through opening is opened at the upper end of the collecting box 4, and a box cover 401 is threadedly connected to the through opening of the collecting box 4. The filter barrel 403 is installed on the box cover 401. By threading the box cover 401 on the collecting box 4, the box cover 401 can be opened after a period of use, so that the oat husks and dust intercepted in the collecting box 4 can be cleaned, and the oat husks and dust attached to the filter barrel 403 can also be cleaned.

[0039] A hollow bearing 402 is rotatably connected to the box cover 401, and a filter barrel 403 is fixedly connected to the hollow bearing 402. A blade group 404 is fixedly connected to the filter barrel 403. The air outlet of the dust suction fan 405 extends into the collection box 4 and faces the blade group 404. When the dust suction fan 405 blows the gas, oat husks and dust into the collection box 4 through the blowing port, the dust suction fan 405 will blow the gas, oat husks and dust toward the blade group 404, thereby blowing the blade group 404 to rotate, and then the blade group 404 can drive the filter barrel 403 to rotate rapidly with the cooperation of the hollow bearing 402, and then the oat husks and dust attached to the filter barrel 403 will be thrown away under the action of centrifugal force, thereby ensuring the effect of clean gas being discharged from the collection box 4 through the filter holes of the filter barrel 403.

[0040] Embodiment 3:

[0041] Reference Figure 1-Figure 6 A composite oat threshing device is basically the same as Example 2. Furthermore, a movable plate 406 is slidably connected to the lower end of the inner part of the collecting box 4. The four corners of the bottom of the movable plate 406 are fixedly connected to the first telescopic spring 407. The lower end of the first telescopic spring 407 is fixedly connected to the bottom of the collecting box 4. A rangefinder 408 is fixedly connected to the lower end of the inner part of the collecting box 4. The detection end of the rangefinder 408 faces the movable plate 406. An air storage box 409 is installed at the lower end of the inner part of the collecting box 4. A plurality of first jet pipes 4010 are connected to the air storage box 409 at equal intervals in a circle. The first jet pipe 4010 runs through the movable plate 406. A filter barrel 403 is provided at the bottom with a first jet pipe 4010 for use in conjunction with the first jet pipe 4010. The filter barrel 403 has a conical design, and a first electromagnetic valve is installed in the first jet pipe 4010. When more oatmeal husks and dust are attached to the filter barrel 403, the air pressure of the gas entering the collection box 4 will increase accordingly, and then the movable plate 406 will overcome the elastic force of the first telescopic spring 407 and move downward. When the rangefinder 408 detects that the movable plate 406 moves down to a specified value, the controller will control the first electromagnetic valve in the first jet pipe 4010 to open, and then the high-pressure gas in the gas storage box 409 will be ejected through the first jet pipe 4010, and then the high-pressure gas ejected through the first jet pipe 4010 will enter the filter barrel 403 through the through-hole at the bottom of the filter barrel 403. Figure 3 As shown, since the filter barrel 403 is conical in design, the high-pressure gas will be sprayed vertically upward toward the filter holes opened on the filter barrel 403, thereby having a back-blowing effect on the filter holes, so as to blow away the oatmeal husks and dust attached to the filter holes, thereby ensuring the efficiency of the gas being discharged from the collection box 4 through the filter holes.

[0042] A second jet pipe 4011 is connected to the middle position of the upper end of the air storage box 409, and the second jet pipe 4011 runs through the movable plate 406. A receiving plate 4014 is fixedly connected to the bottom of the filter barrel 403 near the second jet pipe 4011 through a second telescopic spring 4013. A plurality of impact heads 4015 are fixedly connected to the receiving plate 4014 at a circumferentially equidistant side near the filter barrel 403. A second solenoid valve is installed in the second jet pipe 4011. When the first solenoid valve in the first jet pipe 4010 is opened, the second solenoid valve in the second jet pipe 4011 will also be opened, and then The high-pressure gas stored in the gas storage box 409 will enter the first jet pipe 4010 and the second jet pipe 4011 respectively, and then the high-pressure gas entering the second jet pipe 4011 will be sprayed toward the receiving plate 4014, and then the receiving plate 4014 will overcome the elastic force of the second telescopic spring 4013 to drive the impact head 4015 to impact the filter barrel 403, thereby causing the filter barrel 403 to vibrate, so that the oatmeal husks and dust attached to the filter barrel 403 can be more fully detached, further improving the effect of removing the oatmeal husks and dust on the filter barrel 403.

[0043] Filters 4012 are installed at the jet ports of the first jet pipe 4010 and the second jet pipe 4011. The filter 4012 can protect the jet ports of the first jet pipe 4010 and the second jet pipe 4011, thereby preventing oat husks and dust from entering the collection box 4 and entering the air storage box 409 through the first jet pipe 4010 and the second jet pipe 4011.

[0044] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as above with a preferred embodiment, it is not used to limit the present invention.

Claims

1. A composite oat threshing device, characterized in that: include: A machine case (1), wherein a threshing chamber (101), a shelling chamber (102) and a screening chamber (103) which are interconnected are provided in the machine case (1), the threshing chamber (101) being arranged at a position of the machine case (1) close to a feed inlet, and the screening chamber (103) being arranged at a position of the machine case (1) close to a feed outlet; A threshing mechanism for separating the oats, installed in the threshing chamber (101); The threshing mechanism comprises a first rotating shaft (2), a threshing roller (201), a threshing bar (202) and a motor (203); the first rotating shaft (2) is symmetrically rotatably connected in the threshing chamber (101); the threshing roller (201) is fixedly connected to the first rotating shaft (2); the threshing bars (202) are fixed to the threshing roller (201) in a circumferentially equidistant arrangement; the threshing bars (202) on the two threshing rollers (201) are staggered; the motor (203) is fixedly connected to the chassis (1) and is fixedly connected to one end of the first rotating shaft (2); the ends of the two first rotating shafts (2) away from the motor (203) both extend out of the chassis (1) and are fixedly connected to gears (204); the two gears (204) are meshed with each other; A shelling mechanism for shelling the oat grains, installed in the shelling chamber (102); The shelling mechanism comprises a second rotating shaft (3) and a kneading airbag ring (301); the second rotating shaft (3) is rotatably connected in the shelling chamber (102); the kneading airbag ring (301) is fixedly connected to the second rotating shaft (3) and slides against the inner wall of the shelling chamber (102); a pulley (205) is fixedly connected to one end of the second rotating shaft (3) close to the gear (204) and the gear (204) far from the motor (203); the two pulleys (205) are connected via a belt. A screening mechanism for screening the oat seeds and oat husks, installed in the screening chamber (103); The screening mechanism comprises a blower (105), a blow hood (106) and a second guide plate (107); the blower (105) is installed on a side of the chassis (1) away from the screening chamber (103); the blow hood (106) is embedded in the chassis (1) at a position close to the screening chamber (103); the second guide plate (107) is fixedly installed in the screening chamber (103); the air outlet of the blow hood (106) faces the second guide plate (107); and the air outlet of the blower (105) is connected to the air inlet of the blow hood (106); A first guide plate (104) is fixedly connected between the threshing mechanism and the shelling mechanism in the chassis (1); A collection box (4) mounted on the chassis (1); A filter barrel (403) is installed in the collection box (4) and is connected to the air outlet of the collection box (4); The chassis (1) is provided with a dust discharge port at an upper portion close to the screening chamber (103), and the screening chamber (103) is provided with a flow guide chamber (108) at a position close to the dust discharge port; A dust suction fan (405) is installed on the collection box (4), the air inlet of the dust suction fan (405) is connected to the dust exhaust port of the chassis (1), and the air outlet of the dust suction fan (405) is connected to the air inlet of the collection box (4); The threshing bar (202) rotates to remove the oat grains on the oat heads and drop them into the shelling chamber (102). The kneading airbag ring (301) rubs the oat grains and rubs off the oat husks. When the oat seeds and oat husks fall into the screening chamber (103), the blower (105) blows air toward the oat seeds and oat husks. The oat seeds flow down along the second guide plate (107) to the bottom of the screening chamber (103) and flow out through the discharge port, while the oat husks and some dust float upward and are sucked into the collection box (4).

2. According to the composite oat threshing device described in claim 1, a through opening is opened at the upper end of the collecting box (4), a box cover (401) is connected to the through opening of the collecting box (4) by means of threads, and the filter barrel (403) is installed on the box cover (401).

3. A composite oat threshing device according to claim 2, characterized in that: The box cover (401) is rotatably connected to a hollow bearing (402), the filter barrel (403) is fixedly connected to the hollow bearing (402), the filter barrel (403) is fixedly connected to a blade group (404), and the air outlet of the dust suction fan (405) extends into the collection box (4) and faces the blade group (404).

4. A composite oat threshing device according to claim 3, characterized in that: The lower end of the interior of the collecting box (4) is slidably connected to a movable plate (406), and the four corners of the bottom of the movable plate (406) are fixedly connected to first telescopic springs (407), and the lower end of the first telescopic spring (407) is fixedly connected to the bottom of the collecting box (4). The lower end of the interior of the collecting box (4) is fixedly connected to a rangefinder (408), and the detection end of the rangefinder (408) faces the movable plate (406). An air storage box (409) is installed at the lower end of the interior of the collecting box (4), and a plurality of first jet pipes (4010) are connected to the air storage box (409) at equal intervals in a circle, and the first jet pipe (4010) passes through the movable plate (406). A through opening for use with the first jet pipe (4010) is opened at the bottom of the filter barrel (403), and the filter barrel (403) is designed to be conical, and a first solenoid valve is installed in the first jet pipe (4010).

5. A composite oat threshing device according to claim 4, characterized in that: A second jet pipe (4011) is connected to the middle position of the upper end of the air storage box (409), and the second jet pipe (4011) runs through the movable plate (406). A receiving plate (4014) is fixedly connected to the bottom of the filter barrel (403) near the second jet pipe (4011) via a second telescopic spring (4013). A plurality of impact heads (4015) are fixedly connected to one side of the receiving plate (4014) near the filter barrel (403) at equidistant intervals in a circle, and a second solenoid valve is installed in the second jet pipe (4011).

6. A composite oat threshing device according to claim 5, characterized in that: Filters (4012) are installed at the jet outlets of the first jet pipe (4010) and the second jet pipe (4011).

7. A method for using a composite oat threshing device, using the composite oat threshing device according to claim 1, characterized in that: The main steps include: S1: First, the threshing mechanism, the shelling mechanism, the screening mechanism and the dust suction fan (405) on the chassis (1) are started; S2: The separation personnel can then hold the oat stalks and place the oat heads between the two threshing rollers (201) through the feed port of the machine case (1). Then, the mature oat grains on the oat heads will be separated from the oat heads under the action of the threshing mechanism and fall along the first guide plate (104) to the hulling chamber (102). Then, the hulling mechanism will rub the oat grains to rub off the oat husks on the oat seeds and separate them. S3: When the oat seeds and oat husks separated by rubbing fall into the screening chamber (103), the blower (105) will blow air to the oat seeds and oat husks through the blow hood (106). Since the oat seeds and oat husks have different masses, the heavier oat seeds will flow down along the second guide plate (107) to the bottom of the screening chamber (103) and flow out through the discharge port, while the lighter oat husks and some dust will float upward along the second guide plate (107) and be sucked into the collection box (4) by the dust suction fan (405). S4: The gas entering the collection box (4) will pass through the filter holes of the filter barrel (403) and be discharged from the collection box (4), while the oat husks and dust will be intercepted by the filter barrel (403) and remain in the collection box (4); S5: After the separation mechanism removes the oat grains from one bundle of oats, the next bundle of oats can be extended between the two threshing rollers (201), and the threshing operation can be continuously performed on the oats by repeating this process.

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