Separating screen for rice cultivation

Abstract

The invention relates to a separating screen for rice cultivation, which comprises a machine body upper part and a machine body lower part, the machine body upper part and the machine body lower part are detachably and fixedly connected, an inner cavity for screening rice is formed between the machine body upper part and the machine body lower part, and the separating screen further comprises a deformation screen body part and two linear driving sources, the deformation screen body part is installed in an inner cavity formed between the machine body upper part and the machine body lower part, and the two linear driving sources are both installed at the bottom of the machine body lower part. Through the arrangement of the deformable screen body part, the screen cloth can be adjusted according to requirements when the separating screen for rice cultivation is used, so that rice with different particle sizes is screened, the situation that a traditional separating screen adopts multi-stage screen cloth to screen rice with different particle sizes is avoided, the overall structure space of the device can be reduced, and the size of the device is reduced; and the device can have a wide screening application range, the screen does not need to be replaced, and the convenience of screening operation for rice cultivation is improved.

Description

Technical Field

[0001] The present application relates to the technical field of rice cultivation, and in particular to a separation screen for rice cultivation. Background Art

[0002] Rice refers to the common rice subspecies in the subgenus of cultivated rice in the genus Oryza of the family Gramineae, with the seeds without the husk removed. The separation screen for rice cultivation is used to remove impurities in rice, such as large particles, shrunken rice, straw, etc., so as to improve the purity of rice. It can also be used to separate rice of different particle sizes. The traditional manual screening method is time-consuming and labor-intensive, while the separation screen can greatly improve production efficiency and shorten the processing cycle.

[0003] The existing separation screens for rice cultivation in the prior art use vibrating screens, air flow blowing, etc. to separate rice from impurities. When the rice needs to be graded and screened according to the particle size, multiple groups of screens with different apertures are usually set for graded screening. However, the traditional separation screen uses multi-level screens to screen rice with different particle sizes, which not only makes the overall structure of the device occupy a large space, but also requires the device to replace the corresponding screen according to the screening range. Summary of the invention

[0004] In order to improve the problems raised in the above background technology, the present application provides a separation screen for rice cultivation.

[0005] The present application provides a separation screen for rice cultivation using the following technical solution: A separation screen for rice cultivation, comprising an upper body and a lower body, wherein the upper body and the lower body are detachably fixedly connected, and an inner cavity for screening rice is formed between the upper body and the lower body, and further comprising a deformable screen body part and two linear drive sources, wherein the deformable screen body part is installed in the inner cavity formed between the upper body and the lower body, and the two linear drive sources are installed at the bottom of the lower body, and the output end of the linear drive source extends into the inner cavity between the upper body and the lower body, and the two linear drive sources are used to drive the deformable screen body part. The deformable screen body portion includes four groups of equidistant adjustment mechanisms, multiple screen warps and multiple screen wefts. The multiple screen warps are equidistantly distributed to form a warp group, and the multiple groups of screen wefts are equidistantly distributed to form a weft group. The warp group is laid above the weft group or the weft group is laid above the warp group to form a screen. The four groups of equidistant adjustment mechanisms are respectively connected to the warp group and the weft group, and every two groups of parallel distributed equidistant adjustment mechanisms are used to adjust the spacing between multiple screen warps in the warp group or the spacing between multiple screen wefts in the weft group, so that multiple screen holes with adjustable sizes are formed on the screen.

[0006] Furthermore, the equidistant adjustment mechanism includes two brackets, a sliding plate, a plurality of distance adjusting slots, a number of shifting blocks equal to the number of distance adjusting slots, and a guide shaft, the two brackets are fixedly connected in the inner cavity formed between the upper part of the machine body and the deformable screen body part, the two ends of the sliding plate are respectively slidably connected to the two brackets, the plurality of distance adjusting slots are formed on the sliding plate, the plurality of distance adjusting slots are symmetrically distributed about the plane where the center of the sliding plate is located, and the plurality of distance adjusting slots are inclined at a certain angle from the center to the two ends in sequence, the plurality of shifting blocks each pass through a distance adjusting slot, and the plurality of shifting blocks are slidably set on the guide shaft, the two ends of the guide shaft are respectively fixedly connected to the two brackets, and each of the shifting blocks is fixedly connected to the end of the screen warp or the screen weft on the side facing the adjacent screen warp or the screen weft.

[0007] Furthermore, the output ends of the two linear drive sources are respectively connected to the sliding plates in two groups of vertically distributed equidistant adjustment mechanisms, and the linear drive source is configured as an electric push rod, a hydraulic push rod or a pneumatic push rod.

[0008] Furthermore, the upper part of the machine body includes an upper cover and a material guide cover, and the lower part of the machine body includes a lower cover, a support platform, a discharge cover and a base. The facing sides of the upper cover and the lower cover are aligned and contacted, and the upper cover and the lower cover are connected and fixed by a locking piece, so that an inner cavity for installing the deformed screen body portion is formed between the upper cover and the lower cover, the material guide cover is formed at the top center of the upper cover, and the material guide cover faces the center of the screen, the support platform is formed at the bottom of the lower cover, and the support platform supports the screen, the discharge cover is formed at the bottom center of the lower cover, and the inner cavities among the discharge cover, the support platform and the material guide cover are communicated, and the base support is fixed at the bottom outer edge of the lower cover.

[0009] Furthermore, the separation screen for rice cultivation also includes a vibration motor, which is installed at the bottom of the lower cover and is located outside the discharge cover and the linear drive source.

[0010] Furthermore, the upper part of the machine body also includes a material feeding guide structure installed above the upper cover, the material feeding guide structure is communicated with the material guide cover, and the upper end opening of the material feeding guide structure is larger than the lower end opening.

[0011] Furthermore, the material feeding guide structure includes a top platform, a plurality of movable blades, an adjusting cover and an input cover, the top platform is fixedly connected to the top center of the upper cover and communicates with the material guide cover, a polygonal groove in the shape of a regular polygon is formed on the upper surface of the top platform, a plurality of movable blades are laid on the top platform, and the number of movable blades is equal to the number of sides of the polygonal groove, and a convex column penetrating the movable blade is fixedly connected to the outer edge of each movable blade, and the lower end of the convex column extends into a section of the groove body of the polygonal groove, and the adjusting cover is rotatably covered on the outer side of the top platform, and the number of the movable blades is equal to the number of sides of the polygonal groove. The upper end of each of the protruding columns extends into an adjusting slot, the input cover is formed at the top center of the adjusting cover, and an arc-shaped notch is formed at the inner end corner of each of the movable blades. The arc-shaped notches of the plurality of movable blades can form a circular notch with a diameter smaller than the top platform, the adjusting cover and the inner diameter of the input cover. The feeding guide structure also includes a pulley, a transmission belt and a first motor. A belt groove is formed on the outer edge of the adjusting cover. The transmission belt is sleeved on the pulley and the belt groove and is respectively connected to the pulley and the adjusting cover for transmission. The first motor is mounted on the upper cover and drives the deflection of the pulley.

[0012] The beneficial technical effect of the present application is that, by setting the deformable screen body, the separation screen for rice cultivation can adjust the screen according to the needs when in use, so as to screen the rice with different particle sizes, avoiding the use of multi-stage screens for screening the rice with different particle sizes by the traditional separation screen, which can not only reduce the overall structural space of the device, but also make the device have a higher screening application range without changing the screen, thereby improving the convenience of screening operation in rice cultivation; By setting the feeding guide structure in the upper part of the machine body, when performing the screening operation of rice cultivation, the speed of downward feeding of rice can be controlled and adjusted by adjusting the size of the opening formed at the lower end of the feeding guide structure, thereby reducing the accumulation of rice during the screening process; Through the coordinated arrangement of the lower part of the machine body and the linear drive source, the vibration force can be transmitted to the screen when the screening operation of rice cultivation is carried out. Therefore, when the screen is used to screen the rice, the screen can be used to generate a certain amount of shaking to reduce the sticking of rice at the screen and the blockage of the screen holes, thereby improving the smoothness of the screening process. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of the decomposed structure of a separation screen for rice cultivation according to an embodiment of the present application; Figure 2 yes Figure 1 Schematic diagram of the structure of the combined separation screen for medium rice cultivation; Figure 3 yes Figure 2A schematic diagram of the structure of a separation screen for cultivating middle-grain rice at another angle; Figure 4 It is a structural schematic diagram of a deformed screen body in an embodiment of the present application; Figure 5 yes Figure 4 A schematic diagram of the structure of the middle deformed screen body at another angle; Figure 6 It is a structural schematic diagram of the upper part of the machine body in the embodiment of the present application; Figure 7 yes Figure 6 A schematic diagram of the structure of the upper part of the middle fuselage at another angle; Figure 8 yes Figure 6 The schematic diagram of the exploded structure of the upper part of the middle fuselage after omitting the drive structure; Fig. 9 It is a structural schematic diagram of the lower part of the machine body in the embodiment of the present application; Fig.10 This is a schematic diagram of the structure of the lower part of the fuselage 9 from another angle.

[0014] Figure numerals: 10, upper part of the machine body; 11, upper cover; 12, material guide cover; 13, top platform; 131, polygonal groove; 14, movable blade; 141, convex column; 15, adjustment cover; 151, adjustment groove; 152, belt groove; 16, input cover; 17, pulley; 18, transmission belt; 19, first motor; 20, deformable screen body; 21, bracket; 22, sliding plate; 23, distance adjustment groove; 24, shifting block; 25, guide shaft; 26, screen warp; 27, screen weft; 28, screen hole; 30, lower part of the machine body; 31, lower cover; 32, support platform; 33, discharge cover; 34, base; 40, linear drive source; 50, vibration motor. DETAILED DESCRIPTION

[0015] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0016] The present application embodiment discloses a separation screen for rice cultivation. Figures 1 to 3, the separation screen for rice cultivation may include an upper body 10, a deformed screen body 20, a lower body 30, two linear drive sources 40 and a vibration motor 50. The upper body 10 and the lower body 30 are detachably fixedly connected, and an inner cavity for screening rice is formed between the upper body 10 and the lower body 30. The deformed screen body 20 is installed in the inner cavity formed between the upper body 10 and the lower body 30, and the two linear drive sources 40 are installed at the bottom of the lower body 30. The output end of the linear drive source 40 extends into the inner cavity between the upper body 10 and the lower body 30, and under the drive of the two linear drive sources 40, the screen in the deformed screen body 20 can be deformed and adjusted, so as to adapt to different screening particle sizes of rice. The vibration motor 50 is installed at the bottom of the lower body 30, and when the vibration motor 50 is activated, the vibration force is transmitted to the screen in the deformed screen body part 20 through the lower body 30, so that the rice at the screen is shaken and screened and falls.

[0017] See also Figure 4 and Figure 5 The deformed screen body 20 may include four groups of equidistant adjustment mechanisms, a plurality of screen warps 26 and a plurality of screen wefts 27. A plurality of screen warps 26 are equidistantly distributed to form a warp group, a plurality of screen wefts 27 are equidistantly distributed to form a weft group, and the warp group is laid on the weft group or the weft group is laid on the warp group to form a screen. The wire diameters of the screen warps 26 and the screen wefts 27 are smaller than the particle size required for screening, and the screen warps 26 and the screen wefts 27 are kept in a tensioned state during use. The four groups of equidistant adjustment mechanisms are respectively connected to the warp group and the weft group, and each two groups of parallel equidistant adjustment mechanisms are used to adjust the spacing of the plurality of screen warps 26 in the warp group or the spacing of the plurality of screen wefts 27 in the weft group, so that a plurality of sieve holes 28 with adjustable sizes are formed on the screen.

[0018] In this embodiment, the isometric adjustment mechanism may include two brackets 21, a sliding sheet 22, a plurality of distance adjustment slots 23, a number of shifting blocks 24 equal to the number of distance adjustment slots 23, and a guide shaft 25. Both brackets 21 are fixedly connected in the inner cavity formed between the upper part 10 of the machine body and the deformed screen body part 20. The two ends of the sliding sheet 22 can be slidably connected with the two brackets 21 by matching the concave and convex shapes. Multiple distance adjustment slots 23 are formed on the sliding sheet 22, and the distance adjustment slots 23 pass through the sliding sheet 22. Multiple distance adjustment slots 23 are symmetrically distributed in the vertical plane where the center of the sliding sheet 22 is located, and multiple distance adjustment slots 23 are tilted from the center to the two ends in sequence at a certain angle, and the lateral projection spacing between the centers of each two adjacent distance adjustment slots 23 is equal, and the difference in the tilt angle of each two adjacent distance adjustment slots 23 is equal. Multiple shifting blocks 24 each pass through a distance adjustment slot 23, and multiple shifting blocks 24 are slidably arranged on the guide shaft 25, and the two ends of the guide shaft 25 are fixedly connected to the two brackets 21. When the sliding piece 22 slides along the height direction of the bracket 21, the inner wall of the distance adjustment groove 23 pushes the shifting block 24, and the guide shaft 25 guides the shifting block 24, so that the remaining shifting blocks 24 can be evenly spaced to move to both ends or to the center except for the shifting block 24 located in the center. The side of each shifting block 24 facing the adjacent screen warp 26 or screen weft 27 is fixedly connected to the end of the screen warp 26 or screen weft 27, so that the movement of the shifting block 24 can drive the screen warp 26 or screen weft 27 to adjust the position accordingly. The output ends of the two linear drive sources 40 are respectively connected to the sliding pieces 22 in the two groups of vertically distributed equidistant adjustment mechanisms, and the activity of the output ends can drive each sliding piece 22 to move, thereby adjusting the warp group and the weft group respectively. The linear drive source 40 can adopt the electric push rod, hydraulic push rod or pneumatic push rod already available in the prior art, and the telescopic distance of its output end is controlled by the control system.

[0019] See also Figures 6 to 8 The upper part 10 of the machine body includes an upper cover 11, a material guide cover 12 and a material feeding guide structure. The material guide cover 12 is formed at the top center of the upper cover 11, and the material guide cover 12 faces the center of the screen. The material feeding guide structure is installed above the upper cover 11, and the material feeding guide structure and the material guide cover 12 are connected, so that the input rice can pass through and fall to the center area of ​​the screen. The upper opening of the material feeding guide structure is larger than the lower opening, and the lower opening of the material feeding guide structure can be adjusted to adjust the speed at which the rice falls downward.

[0020] In this embodiment, the material feeding guide structure includes a top platform 13, a plurality of movable blades 14, an adjustment cover 15, an input cover 16, a pulley 17, a transmission belt 18 and a first motor 19. The top platform 13 is fixedly connected to the top center of the upper cover 11 and communicates with the material guide cover 12, and a polygonal groove 131 in the shape of a regular polygon is formed on the upper surface of the top platform 13. A plurality of movable blades 14 are laid on the top platform 13, and a convex column 141 penetrating the movable blade 14 is fixedly connected to the outer edge of each movable blade 14, and the number of movable blades 14 is equal to the number of sides of the polygonal groove 131. The adjustment cover 15 is rotatably covered on the outside of the top platform 13, and the plurality of movable blades 14 are located inside thereof. The number of adjustment grooves 151 equal to the number of movable blades 14 is formed on the adjustment cover 15, and the upper end of each convex column 141 extends into one adjustment groove 151, and the lower end of each convex column 141 extends into a section of the polygonal groove 131. When the deflection adjustment cover 15 is turned, the multiple movable blades 14 can be tilted and moved by the adjustment groove 151 pushing the protrusion 141 and the polygonal groove 131 guiding the moving direction of the protrusion 141, and a polygonal opening whose size can be adjusted can be formed between the multiple movable blades 14. An arc-shaped notch is formed at the inner end corner of each movable blade 14, and the arc-shaped notches of the multiple movable blades 14 can be surrounded by a circular notch with a diameter smaller than the inner diameter of the top platform 13, the adjustment cover 15 and the input cover 16, so that when the deflection adjustment operation of the adjustment cover 15 is not performed, a circular opening can also be formed between the multiple movable blades 14, so that rice can fall. The input cover 16 is formed at the top center of the adjustment cover 15, and a frustum-shaped opening can be formed at the top of the input cover 16, so that the user can pour rice into it. A belt groove 152 is formed on the outer edge of the adjusting cover 15, and the transmission belt 18 is sleeved on the pulley 17 and the belt groove 152 and is respectively connected to the pulley 17 and the adjusting cover 15 for transmission. The first motor 19 is installed on the upper cover 11 and drives the deflection of the pulley 17. Therefore, by using the control system to drive the first motor 19, the deflection activity of the adjusting cover 15 can be controlled, and the opening between the multiple movable blades 14 can be adjusted.

[0021] See also Fig. 9 and Fig.10The lower part 30 of the machine body includes a lower cover 31, a support platform 32, a discharge cover 33 and a base 34. The facing sides of the upper cover 11 and the lower cover 31 are aligned and contacted, and the upper cover 11 and the lower cover 31 are connected and fixed by bolts and other locking members, so that an inner cavity for installing the deformed screen body 20 is formed between the upper cover 11 and the lower cover 31. The support platform 32 is formed at the bottom of the lower cover 31, and the support platform 32 supports the screen. The vibration motor 50 is installed at the bottom of the lower cover 31, and the vibration motor 50 is located outside the discharge cover 33 and the linear drive source 40. The support platform 32 can transmit the vibration action of the vibration motor 50 when it is enabled to the screen. The discharge cover 33 is formed at the bottom center of the lower cover 31, and the inner cavity between the discharge cover 33, the support platform 32 and the guide cover 12 is connected, so that the screened rice can be guided downward through the discharge cover 33. The base 34 is supported and fixed at the bottom outer edge of the lower cover 31.

[0022] The system of the present invention may further include a control system for controlling the operation of the power source such as the motor to perform automatic operation of rice screening. It should be understood that the control system has no particular limitations and can be implemented by the control technology under the prior art, which will not be described in detail herein.

[0023] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A separation screen for rice cultivation, comprising an upper body (10) and a lower body (30), wherein the upper body (10) and the lower body (30) are detachably fixedly connected, and an inner cavity for screening rice is formed between the upper body (10) and the lower body (30), characterized in that: The machine also comprises a deformable screen body portion (20) and two linear drive sources (40), wherein the deformable screen body portion (20) is installed in an inner cavity formed between the upper body portion (10) and the lower body portion (30), and the two linear drive sources (40) are installed at the bottom of the lower body portion (30), and the output end of the linear drive source (40) extends into the inner cavity between the upper body portion (10) and the lower body portion (30), and the two linear drive sources (40) are used to drive the deformable screen body portion (20). The deformable screen body (20) comprises four groups of equidistant adjustment mechanisms, a plurality of screen warps (26) and a plurality of screen wefts (27); the plurality of screen warps (26) are equidistantly distributed to form a warp group; the plurality of screen wefts (27) are equidistantly distributed to form a weft group; the warp group is laid on top of the weft group or the weft group is laid on top of the warp group to form a screen; the four groups of equidistant adjustment mechanisms are respectively connected to the warp group and the weft group, and every two groups of parallel equidistant adjustment mechanisms are used to adjust the spacing between the plurality of screen warps (26) in the warp group or the spacing between the plurality of screen wefts (27) in the weft group, so that a plurality of screen holes (28) of adjustable size are formed on the screen.

2. A separation screen for rice cultivation according to claim 1, characterized in that: The isometric adjustment mechanism comprises two brackets (21), a sliding plate (22), a plurality of distance adjusting grooves (23), a shifting block (24) having a number equal to the number of the distance adjusting grooves (23), and a guide shaft (25); the two brackets (21) are fixedly connected to an inner cavity formed between an upper portion of the machine body (10) and a deformable screen body portion (20); two ends of the sliding plate (22) are respectively slidably connected to the two brackets (21); the plurality of distance adjusting grooves (23) are formed on the sliding plate (22); the plurality of distance adjusting grooves (23) are connected to the sliding plate (22); The plurality of adjusting slots (23) are symmetrically distributed on a plane where the center of the screen mesh (22) is located, and the plurality of adjusting slots (23) are inclined at a certain angle from the center to the two ends in sequence, the plurality of shifting blocks (24) each pass through a adjusting slot (23), and the plurality of shifting blocks (24) are slidably arranged on a guide shaft (25), the two ends of the guide shaft (25) are respectively fixedly connected to the two brackets (21), and each of the shifting blocks (24) is fixedly connected to the end of the screen mesh warp (26) or the screen mesh weft (27) on one side facing the adjacent screen mesh warp (26) or the screen mesh weft (27).

3. A separation screen for rice cultivation according to claim 2, characterized in that: The output ends of the two linear drive sources (40) are respectively connected to the sliding sheets (22) in two groups of vertically distributed equidistant adjustment mechanisms, and the linear drive source (40) is configured as an electric push rod, a hydraulic push rod or a pneumatic push rod.

4. A separation screen for rice cultivation according to any one of claims 1 to 3, characterized in that: The upper part (10) of the machine body comprises an upper cover (11) and a material guide cover (12), and the lower part (30) of the machine body comprises a lower cover (31), a support platform (32), a material discharge cover (33) and a base (34). The upper cover (11) and the lower cover (31) are aligned and in contact with each other on their facing sides, and the upper cover (11) and the lower cover (31) are connected and fixed by a locking member, so that an inner cavity for mounting the deformable screen body part (20) is formed between the upper cover (11) and the lower cover (31). The material guide cover (12) is formed at the top center of the upper cover (11), and the material guide cover (12) faces the center of the screen. The support platform (32) is formed at the bottom of the lower cover (31), and the support platform (32) supports the screen. The material discharge cover (33) is formed at the bottom center of the lower cover (31), and the inner cavities among the material discharge cover (33), the support platform (32) and the material guide cover (12) are connected. The base (34) is supported and fixed at the bottom outer edge of the lower cover (31).

5. A separation screen for rice cultivation according to claim 4, characterized in that: It also includes a vibration motor (50), which is installed at the bottom of the lower cover (31), and the vibration motor (50) is located outside the discharge cover (33) and the linear drive source (40).

6. The separation screen for rice cultivation according to claim 4, characterized in that: The upper part (10) of the machine body further comprises a material feeding guide structure installed above the upper cover (11), the material feeding guide structure being in communication with the material guiding cover (12), and the upper opening of the material feeding guide structure being larger than the lower opening thereof.

7. A separation screen for rice cultivation according to claim 6, characterized in that: The material feeding guide structure comprises a top platform (13), a plurality of movable blades (14), an adjustment cover (15) and an input cover (16); the top platform (13) is fixedly connected to the top center of the upper cover (11) and communicates with the material guide cover (12); a polygonal groove (131) in the shape of a regular polygon is formed on the upper surface of the top platform (13); a plurality of movable blades (14) are laid on the top platform (13), and the number of movable blades (14) is equal to the number of sides of the polygonal groove (131); the outer surface of each movable blade (14) is The edges of the top platform (13) are fixedly connected with a convex column (141) that penetrates the movable blade (14); the lower end of the convex column (141) extends into a section of the polygonal groove (131); the adjusting cover (15) is rotatably covered on the outside of the top platform (13); and the adjusting cover (15) is formed with adjusting grooves (151) whose number is equal to the number of the movable blades (14); the upper end of each convex column (141) extends into one adjusting groove (151); and the input cover (16) is formed at the top center of the adjusting cover (15).

8. A separation screen for rice cultivation according to claim 7, characterized in that: An arc-shaped notch is formed at the inner corner of each movable blade (14), and the arc-shaped notches of the plurality of movable blades (14) can enclose a circular notch having a diameter smaller than the inner diameters of the top platform (13), the adjustment cover (15) and the input cover (16).

9. A separation screen for rice cultivation according to claim 8, characterized in that: The material feeding guide structure further comprises a pulley (17), a transmission belt (18) and a first motor (19); a belt groove (152) is formed on the outer edge of the adjusting cover (15); the transmission belt (18) is sleeved on the pulley (17) and the belt groove (152) and is respectively transmission-connected to the pulley (17) and the adjusting cover (15); and the first motor (19) is mounted on the upper cover (11) and drives the pulley (17) to deflect.

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