Rice threshing device

Abstract

The utility model discloses a rice threshing device, which belongs to the field of agricultural machinery and comprises a support frame used for supporting a rice threshing process, a dust collecting box is mounted on the side surface of the support frame, a second motor is mounted on the side surface of the dust collecting box, and an output shaft of the second motor is connected with a screw rod through a coupler. A scraper is slidably connected to the periphery of the lead screw, a sliding block is arranged at the tail end of the lead screw, a sliding column is installed on one side of the sliding block, a second contact is installed on the other side of the sliding block, a hollow column is installed on the vertical inner wall of the dust collecting box, a spring is arranged in the hollow column, one end of the spring is connected with the sliding column, and the other end of the spring is connected with the second contact. And a contact I is mounted on the side surface of the scraper. According to the device, the purity of grains can be improved, the health of operators is protected, and the subsequent processing difficulty is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of agricultural machinery, especially a rice threshing device. BACKGROUND

[0002] Rice is one of the main food crops in China. After rice is harvested, threshing is an important processing link. The traditional rice threshing method is mostly manual beating or using simple threshing tools, which is low in efficiency and high in labor intensity. With the development of agricultural modernization, various rice threshing machines have emerged. The existing rice threshing device can meet the basic threshing demand, but the dust removal effect is weak, which reduces the purity of the grains, endangers the health of the operators, and increases the difficulty of subsequent processing.

[0003] After searching, a rice threshing device is disclosed in Chinese patent document (authorized publication number CN214206453U). The utility model discloses a rice threshing device, which comprises a shell, a horizontal slot is formed in the side wall of the shell, a rice conveying device is arranged outside the shell, the rice conveying device can clamp the rice stem to make the rice ear enter the slot and move horizontally along the slot, a threshing roller is arranged inside the shell, which can thresh the rice ear entering from the slot, a sieve plate is arranged below the threshing roller, the sieve plate is provided with a plurality of filter holes, the sieve plate is inclinedly arranged inside the shell, a storage chamber is arranged below the sieve plate, a discharge port is arranged below the storage chamber, a chip discharge port is also formed in the side wall of the shell, and the chaff and other sundries after threshing can slide down to the chip discharge port and be discharged. The utility model can realize threshing of rice ears, has high threshing efficiency and high purity of rice grains, and can meet the basic threshing demand. However, the dust removal effect is weak, which reduces the purity of the grains, endangers the health of the operators, and increases the difficulty of subsequent processing. SUMMARY

[0004] The utility model aims to provide a rice threshing device to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a rice threshing device, comprising a support frame for supporting the rice threshing process, a dust collection box is installed on the side of the support frame, a second motor is installed on the side of the dust collection box, a lead screw is connected to the output shaft of the second motor through a shaft coupling, a scraper is slidably connected to the outer periphery of the lead screw, a sliding block is arranged at the end of the lead screw, a slide column is installed on one side of the sliding block, a second contact is installed on the other side of the sliding block, a hollow column is installed on the vertical inner wall of the dust collection box, a spring is arranged in the hollow column, one end of the spring is connected to the slide column, and a first contact is installed on the side of the scraper.

[0006] Preferably, the top of the dust collecting box is connected with a guide plate, one end of the guide plate away from the dust collecting box is connected with a filter box, a plurality of filter plate racks are slidably connected in the filter box, and filter plates are arranged in the plurality of filter plate racks.

[0007] Preferably, the filter box is provided with a second dust inlet.

[0008] Preferably, the dust collecting box is connected with a dust discharging box, the dust discharging box is slidably arranged with a dust collecting box, and the dust collecting box is provided with a collecting box.

[0009] Preferably, the support frame is provided with a first motor, the output end of the first motor is connected with a transmission belt, and the inner ring of the transmission belt is connected with a first transmission wheel and a second transmission wheel.

[0010] Preferably, the first transmission wheel and the second transmission wheel are respectively provided with a fan and a threshing wheel, the side surface of the support frame is provided with a protective cover, and the outer periphery of the protective cover is connected with a rice inlet.

[0011] Preferably, the vertical inner wall of the protective cover is connected with a screening plate, and the side surface of the protective cover is connected with a first dust inlet.

[0012] Compared with the prior art, the technical effects and advantages of the utility model are:

[0013] The rice threshing device, thanks to the structure of the filter box, dust impurities enter the filter box through the guide plate, contact and adsorb the filter plate, and the filtered air is discharged through the air outlet. After a period of time, the filter plate can be taken out for cleaning and replacement. Compared with the traditional rice threshing device, the dust removal effect is weak, the structure can improve the purity of the grains, protect the health of the operators, and reduce the difficulty of subsequent processing.

[0014] The rice threshing device, thanks to the structure of the dust collecting box, the second motor drives the screw rod to rotate, the screw rod drives the scraper to reciprocate along the direction of the screw rod, the scraper pushes the impurities into the dust collecting box, when the scraper moves to one side of the dust collecting box, the scraper drives the contact one and the contact two to contact, the second motor reverses to drive the scraper to move reversely, the scraper can extrude the sliding block, the slide column and the spring, prevent the scraper from hard contact with the inside of the dust collecting box, damage the equipment, the dust collecting box can be taken out for cleaning, the structure improves the cleaning efficiency of the impurities and protects the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed in the specific embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0016] Figure 1 It is a structural schematic view of the present application.

[0017] Figure 2 It is a transverse sectional view of the present application.

[0018] Figure 3 It is a longitudinal sectional view of the present application.

[0019] Figure 4 It is a sectional view of the dust collecting box of the present application.

[0020] Figure 5 It is a structural schematic view of the present application Figure 3 It is an enlarged view of A in the present application.

[0021] Explanation of reference signs:

[0022] In the drawing: 1, support frame; 101, first motor; 102, first transmission wheel; 103, second transmission wheel; 104, transmission belt; 105, rice inlet; 106, protective cover; 107, threshing wheel; 108, screening plate; 109, fan; 110, first dust inlet; 2, filter box; 201, air outlet; 202, fan; 203, filter plate frame; 204, filter plate; 205, second dust inlet; 206, guide plate; 3, dust collecting box; 301, second motor; 302, lead screw; 303, scraper; 304, sliding block; 305, sliding column; 306, hollow column; 307, spring; 308, contact one; 309, contact two; 4, collecting box; 401, dust outlet box; 402, dust collecting box. DETAILED DESCRIPTION

[0023] In the following description, a large number of specific details are given in order to provide a more thorough understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without one or more of these details. In other examples, in order to avoid obscuring the present application, some technical features known in the art are not described.

[0024] The connection mode can adopt existing modes such as bonding, welding, bolt connection, etc., and the actual needs are accurate.

[0025] For example, Figures 1 to 5The rice threshing device shown includes a support frame 1 for supporting the rice threshing process, a dust collection box 3 is installed on the side of the support frame 1, a second motor 301 is installed on the side of the dust collection box 3, the output shaft of the second motor 301 is connected with a lead screw 302 through a shaft coupling, the outer periphery of the lead screw 302 is slidingly connected with a scraper 303, the end of the lead screw 302 is provided with a sliding block 304, one side of the sliding block 304 is installed with a sliding column 305, the other side of the sliding block 304 is installed with a contact two 309, a hollow column 306 is installed on the vertical inner wall of the dust collection box 3, a spring 307 is arranged in the hollow column 306, one end of the spring 307 is connected with the sliding column 305, the side of the scraper 303 is installed with a contact one 308, after a period of time, the second motor 301 is started, the second motor 301 drives the lead screw 302 to rotate, the lead screw 302 drives the scraper 303 to reciprocate along the direction of the lead screw 302, the scraper 303 pushes the impurities into the dust collection box 402, when the scraper 303 moves to one side of the dust collection box 3, the scraper 303 drives the contact one 308 to contact with the contact two 309, the second motor 301 is reversed, driving the scraper 303 to move reversely, the scraper 303 can extrude the sliding block 304, the sliding column 305 and the spring 307, preventing the scraper 303 from hard contact with the inside of the dust collection box 3 and damaging the equipment, the dust collection box 402 can be taken out for cleaning.

[0026] The top of the dust collection box 3 is connected with a guide plate 206, the end of the guide plate 206 away from the dust collection box 3 is connected with a filter box 2, a plurality of filter plate racks 203 are slidingly connected in the filter box 2, a filter plate 204 is arranged in each of the plurality of filter plate racks 203, the filter plate 204 is prior art, which can be referred to as a device for separating solids and liquids or different particle size solid particles. Its basic principle is to use the pores of the filter medium (such as filter screen, filter cloth, etc.) to let the liquid or smaller particle substances pass through, while the solid particles or larger size impurities are intercepted on one side of the filter medium. It is not the innovative direction of the rice threshing device, but more description.

[0027] Both sides of the filter box 2 are connected with air outlets 201, fans 202 are installed in the air outlets 201, a second dust inlet 205 is arranged at the bottom of the filter box 2, the impurities and dust blown by the fans 202 enter the dust collection box 3 through the first dust inlet 110, the impurities with slightly larger mass accumulate at the bottom of the dust collection box 3, the dust impurities enter the filter box 2 through the guide plate 206, contact and adsorb the filter plate 204, the filtered air is discharged through the air outlets 201, the dust collection box 3 is communicated with a dust outlet box 401, the dust outlet box 401 is slidingly installed with a dust collection box 402 in the inside, and the bottom of the dust collection box 3 is provided with a collection box 4.

[0028] The side of the support frame 1 is provided with a first motor 101, the output end of the first motor 101 is connected with a transmission belt 104, the inner ring of the transmission belt 104 is connected with a first transmission wheel 102 and a second transmission wheel 103 in a meshing mode, the structure composed of the first motor 101, the first transmission wheel 102 and the second transmission wheel 103 can refer to the working principle of a belt pulley, when the driving wheel starts to rotate under the driving of the power source, static friction force is generated between the surface of the driving wheel and the belt, due to the action of the static friction force, the belt will move together with the driving wheel. The belt is in contact with the driven wheel, and the static friction force between the belt and the driven wheel will drive the driven wheel to rotate, thereby realizing the transmission of power from the driving wheel to the driven wheel, which is not the innovative direction of the rice threshing device, but more description, the side of the first transmission wheel 102 and the second transmission wheel 103 is respectively provided with a fan 109 and a threshing wheel 107, the side of the support frame 1 is provided with a protective cover 106, the outer periphery of the protective cover 106 is connected with a rice inlet 105, the rice to be threshed is put into the rice inlet 105, the first motor 101 is started, the first motor 101 drives the first transmission wheel 102 and the second transmission wheel 103 to rotate through the transmission belt 104, the second transmission wheel 103 drives the threshing wheel 107 to rotate, the rice ear part is in full contact with the threshing wheel 107 for threshing, the vertical inner wall of the protective cover 106 is connected with a screening plate 108, the side of the protective cover 106 is connected with a first dust inlet 110, the rice ear falls through the screening plate 108 and falls into a collection box 4 for recycling, and the fan 109 blows the rice ear during the falling process.

[0029] Working principle

[0030] The rice threshing device, when in use, puts the rice to be threshed from the rice inlet 105, opens the first motor 101, the first motor 101 drives the first transmission wheel 102 and the second transmission wheel 103 to rotate through the transmission belt 104, the second transmission wheel 103 drives the threshing wheel 107 to rotate, the rice ear part is fully contacted with the threshing wheel 107 for threshing, the rice ear falls to the collecting box 4 through the screening plate 108 for recycling, the fan 109 blows during the falling of the rice ear, the impurities and dust are blown through the first dust inlet 110 into the dust collecting box 3, the impurities with slightly larger quality are accumulated at the bottom of the dust collecting box 3, the dust impurities enter the filter box 2 through the guide plate 206, contact and adsorb the filter plate 204, the filtered air is discharged through the air outlet 201, after a period of time, the second motor 301 is opened, the second motor 301 drives the lead screw 302 to rotate, the lead screw 302 drives the scraper 303 to reciprocate along the lead screw 302, the scraper 303 pushes the impurities into the dust collecting box 402, when the scraper 303 moves to one side of the dust collecting box 3, the scraper 303 drives the contact one 308 to contact the contact two 309, the second motor 301 is reversed to drive the scraper 303 to move reversely, the scraper 303 can extrude the sliding block 304, the sliding column 305 and the spring 307, prevent the scraper 303 from hard contact with the inside of the dust collecting box 3, damage the equipment, the dust collecting box 402 can be taken out for cleaning.

[0031] It should be noted that, in this document, relational terms such as one and the other and at least one of are used solely to distinguish one entity or action from another entity or action, without necessarily requiring or implying that each modified entity or action must exist separately from another entity or action.

[0032] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A rice hulling apparatus comprising a support frame (1) for supporting a rice hulling process, characterized by: The side of the support frame (1) is provided with a dust collecting box (3), the side of the dust collecting box (3) is provided with a second motor (301), the output shaft of the second motor (301) is connected with a lead screw (302) through a shaft coupling, the outer periphery of the lead screw (302) is slidably connected with a scraper (303), the end of the lead screw (302) is provided with a sliding block (304), one side of the sliding block (304) is provided with a sliding column (305), the other side of the sliding block (304) is provided with a contact two (309), the vertical inner wall of the dust collecting box (3) is provided with a hollow column (306), the inside of the hollow column (306) is provided with a spring (307), one end of the spring (307) is connected with the sliding column (305), the side of the scraper (303) is provided with a contact one (308).

2. A rice hulling apparatus as claimed in claim 1, wherein: The top of the dust collecting box (3) is connected with a guide plate (206), the end of the guide plate (206) away from the dust collecting box (3) is connected with a filter box (2), the inside of the filter box (2) is slidably connected with a plurality of filter plate racks (203), the inside of the plurality of filter plate racks (203) is provided with a filter plate (204).

3. A rice hulling apparatus as claimed in claim 2, wherein: The two sides of the filter box (2) are connected with air outlets (201), the inside of the air outlets (201) is provided with a fan (202), the bottom of the filter box (2) is provided with a second dust inlet (205).

4. The rice hulling apparatus as claimed in claim 1, wherein: The two sides of the dust collecting box (3) are connected with dust discharging boxes (401), the inside of the dust discharging boxes (401) is slidably provided with dust collecting boxes (402), the bottom of the dust collecting box (3) is provided with a collecting box (4).

5. The rice hulling apparatus as claimed in claim 1, wherein: The side of the support frame (1) is provided with a first motor (101), the output end of the first motor (101) is connected with a transmission belt (104), the inner ring of the transmission belt (104) is meshedly connected with a first transmission wheel (102) and a second transmission wheel (103).

6. A rice hulling apparatus as claimed in claim 5, wherein: The side of the first transmission wheel (102) and the second transmission wheel (103) is respectively provided with a fan (109) and a threshing wheel (107), the side of the support frame (1) is provided with a protective cover (106), the outer periphery of the protective cover (106) is connected with a rice inlet (105).

7. A rice hulling apparatus as claimed in claim 6, wherein: The vertical inner wall of the protective cover (106) is connected with a screening plate (108), the side of the protective cover (106) is connected with a first dust inlet (110).

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