High-yield semi-feeding type spiral self-grass-discharging thresher

Abstract

The invention discloses a high-yield semi-feeding type spiral self-grass-discharging threshing machine which comprises a machine frame (1), a threshing bin (2), a threshing roller (3), a grain bin (4) and a grass discharging opening (5). Filter screens (6) are arranged on the two side walls of the threshing bin (2); the grain bin (4) is mounted below the threshing bin (2); the straw discharging opening (5) is formed in the side wall of one side of the threshing bin (2); a grass baffle (9) is arranged on the side wall of the threshing bin (2) on one side opposite to the grass outlet (5); a grass discharging cover (7) is arranged above the threshing cylinder (3) positioned at one end of the grass discharging port (5); and at least one grass discharging tooth nail (18) is arranged at the end part of the threshing cylinder (3) positioned below the grass discharging cover (7). The threshing machine is novel and unique in structure, reasonable in design, easy to use and high in threshing rate, grain splashing is greatly reduced, grain waste is avoided, and the threshing machine can be widely applied to threshing work of crops such as rice, wheat, sorghum, soybeans and coix seeds.

Description

Technical Field

[0001] The invention relates to agricultural machinery, in particular to a high-yield semi-feeding spiral self-discharging grass thresher, belonging to the technical field of agricultural machinery. Background Art

[0002] The self-draining thresher is a small agricultural machine that can automatically separate the grains from the stems of crops. It is increasingly popular among farmers because of its high working efficiency, which can reduce the labor intensity of farmers, and its small size, light weight and easy handling. However, most threshers on the market are prone to splashing grains during threshing, and the threshing rate is not very ideal, resulting in food waste. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a high-yield self-discharging grass thresher with simple structure, high thresher rate and reduced grain splashing, thereby overcoming the shortcomings of the prior art.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A high-yield semi-feeding spiral self-grass discharge thresher, comprising a frame, a threshing bin, a threshing drum, a grain bin and a grass discharge port; filtering screens are arranged on both side walls of the threshing bin; the grain bin is installed below the threshing bin; the grass discharge port is arranged on one side wall of the threshing bin, and a grass baffle is arranged on the side wall of the threshing bin opposite to the grass discharge port; a grass discharge cover is arranged above the threshing drum at one end of the grass discharge port, and at least one grass discharge tooth nail is arranged at the end of the threshing drum below the grass discharge cover.

[0006] As a preferred solution, the tip of the head of the grass baffle is located below the threshing drum; the tail end of the grass baffle is fixedly connected to the workbench above the threshing bin.

[0007] As a preferred solution, a splash guard is installed on the bottom surface of the grass discharge cover.

[0008] As a preferred solution, a separation screen is provided on the side wall of the grass discharge port.

[0009] As a preferred solution, the threshing drum is installed in the threshing bin and fixed on the rotating shaft, and a drum pulley is fixedly connected to one end of the rotating shaft; the drum pulley is connected to the fan pulley and the double-groove pulley through a transmission belt, and the double-groove pulley is connected to the output shaft of the power device through a belt.

[0010] As a preferred solution, an auger shaft is provided at the bottom of the grain bin, and one end of the auger shaft is fixedly connected to a double-groove pulley.

[0011] As a preferred solution, threshing teeth are provided on the surface of the threshing drum, and the threshing teeth are fixed on the surface of the threshing drum at a certain angle and are arranged in a spiral shape along the rotating direction of the drum wall of the threshing drum.

[0012] Beneficial effects: Compared with the prior art, the invention has a novel and unique structure, a more reasonable design, is easier to use, has a higher threshing rate, greatly reduces grain splashing, avoids food waste, and can be widely used in threshing of crops such as rice, wheat, sorghum, soybeans, and coix seeds.

[0013] 1. The present invention provides a grass baffle on the side wall of the threshing bin opposite to the grass discharge port, through which the forward speed of the straw can be slowed down, and the residence time of the straw in the threshing bin can be increased, thereby greatly improving the grain threshing rate.

[0014] 2. The present invention arranges a filter screen on the side wall of the grain bin, so that the threshed grains can be screened multiple times, thereby reducing the impurities in the grains and making the threshed grains cleaner.

[0015] 3. The present invention provides a grass discharge cover above the threshing drum at one side of the grass discharge port, which can guide the movement direction of the straw, increase the impact force of the straw, and improve the threshing rate.

[0016] 4. The present invention installs a splash-proof baffle on the bottom surface of the grass discharge cover, which can greatly reduce grain splashing during threshing, avoid grain waste, and improve grain yield.

[0017] 5. The present invention provides a separation screen on the side wall of the grass discharge port, which can thresh the grains remaining on the straw to be discharged again by impact, thereby improving the grain threshing rate.

[0018] 6. The threshing bin of the present invention has no partition, has a large space, is not blocked by grass, and has smooth grass discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the threshing bin structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of a threshing drum of the present invention.

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. DETAILED DESCRIPTION

[0023] Example 1: Figure 1As shown, a high-yield semi-feeding spiral self-discharging grass thresher includes a frame 1, a threshing bin 2, a threshing drum 3, a grain bin 4 and a grass discharge port 5; the grain bin 4 is installed below the threshing bin 2. The structure of the grain bin 4 is the same as the prior art. The grain winnowing device and power device of the machine are both prior art, belonging to conventional technologies well known to those skilled in the art, and will not be described in detail in this example.

[0024] like Figure 2 As shown, the threshing bin 2 adopts a U-shaped structure. There is no partition or partition in the threshing bin 2. The space is large and there is no grass blocking. The two side walls of the threshing bin 2 are provided with a filter screen 6. The threshed grains can be directly dropped into the grain bin 4 through the filter screen 6. The threshed grains can be screened through the filter screen 6 to reduce the impurities in the grains and make the threshed grains cleaner. The grass discharge port 5 is provided on one side wall of the threshing bin 2. A grass baffle 9 is provided on the side wall of the threshing bin 2 opposite to the grass discharge port 5 (that is, the side where the personnel stand during threshing). The tip of the head of the grass baffle 9 is located below the threshing drum 3; the tail end of the grass baffle 9 is fixedly connected to the workbench above the threshing bin 2. During threshing, the grass baffle 9 can block the straw that is constantly moving forward in the threshing bin 2, thereby increasing the residence time of the straw in the threshing bin 2 and further improving the threshing rate. A grass discharge cover 7 is provided above the threshing drum 3 at one end of the grass discharge port 5. The grass discharge cover 7 can increase the impact force on the straw when the straw is driven by the threshing drum 3 to be thrown upward, thereby further improving the threshing rate.

[0025] A splash baffle 8 is installed at the bottom of the back side of the grass discharge cover 7, which can block the grains moving at high speed after threshing, reduce the flying speed of the grains, and make the grains fall downward into the grain bin 4 after being blocked, so as to prevent the grains from splashing out directly from the grass discharge port 5.

[0026] like Figure 3 As shown, at least one grass discharge tooth nail 18 is provided at the end of the threshing drum 3 below the grass discharge cover 7. The grass discharge tooth nail 18 is used to quickly and smoothly discharge the threshed straw out of the threshing bin 2. In this example, two grass discharge tooth nails 18 are provided, which are distributed on the circumference of the threshing drum 3 at a certain angle to each other.

[0027] A separation screen 10 is arranged on the side wall of the grass discharge port 5, through which the grains remaining on the straw to be discharged through the grass discharge port 5 can be threshed again, thereby further improving the grain threshing rate.

[0028] The threshing drum 3 is installed in the threshing bin 2 and fixed on the rotating shaft 11, and a drum pulley 12 is fixedly connected to one end of the rotating shaft 11; the drum pulley 12 is connected to the fan pulley 14 and the double groove pulley 15 through the transmission belt 13, and the double groove pulley 15 is connected to the output shaft of the power device through the belt. The power device here is a small diesel or gasoline engine. The double groove pulley 15 has two belt grooves, one of which is used to connect the fan pulley 14 and the drum pulley 12 through the transmission belt 13, and the other groove is used to connect the output shaft of the power device through the belt.

[0029] An auger shaft 16 is provided at the bottom of the grain bin 4, and one end of the auger shaft 16 is fixedly connected to the double-groove pulley 15. The grains in the grain bin 4 can be continuously lifted upwards by the auger shaft 16 and discharged from the bin 4 for packaging.

[0030] A plurality of threshing teeth 17 are arranged on the surface of the threshing drum 3. The threshing teeth 17 are fixed on the surface of the threshing drum 2 at a certain angle and are arranged in a spiral shape along the rotation direction of the drum wall of the threshing drum 3. The threshing teeth 17 of this shape can further improve the threshing effect.

[0031] 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 a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A high-yield semi-feeding spiral self-discharging grass thresher, characterized in that: it comprises a frame (1), a threshing bin (2), a threshing drum (3), a grain bin (4) and a grass discharge port (5); a filter screen (6) is arranged on the side wall of the threshing bin (2); the grain bin (4) is installed below the threshing bin (2); the grass discharge port (5) is arranged on one side wall of the threshing bin (2); a grass baffle (9) is arranged on the side wall of the threshing bin (2) opposite to the grass discharge port (5); a grass discharge cover (7) is arranged above the threshing drum (3) at one end of the grass discharge port (5), and at least one grass discharge tooth nail (18) is arranged at the end of the threshing drum (3) below the grass discharge cover (7).

2. The high-yield semi-feeding spiral self-discharging grass thresher according to claim 1, characterized in that: The tip of the head of the grass baffle (9) is located below the threshing drum (3); the tail end of the grass baffle (9) is fixedly connected to a workbench above the threshing bin (2).

3. The high-yield semi-feeding spiral self-discharging grass thresher according to claim 1, characterized in that: A splash-proof baffle (8) is installed at the bottom of the back side of the grass discharge cover (7).

4. The high-yield semi-feeding spiral self-discharging grass thresher according to claim 1, characterized in that: A separation screen (10) is provided on the side wall of the grass discharge port (5).

5. The high-yield semi-feeding spiral self-discharging grass thresher according to claim 1 is characterized in that: the threshing drum (3) is installed in the threshing bin (2) and fixed on the rotating shaft (11), and a drum pulley (12) is fixedly connected to one end of the rotating shaft (11); the drum pulley (12) is connected to the fan pulley (14) and the double-groove pulley (15) through a transmission belt (13), and the double-groove pulley (15) is connected to the output shaft of the power device through a belt.

6. The high-yield semi-feeding spiral self-discharging grass thresher according to claim 5 is characterized in that: an auger shaft (16) is arranged at the bottom of the grain bin (4), and one end of the auger shaft (16) is fixedly connected to a double-groove pulley (15).

7. The high-yield semi-feeding spiral self-discharging grass thresher according to claim 1, characterized in that: The surface of the threshing drum (3) is provided with threshing teeth (17), which are fixed on the surface of the threshing drum (2) at a certain angle and arranged in a spiral shape along the rotating direction of the drum wall of the threshing drum (3).

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