A screening device for rice production and processing

Abstract

The invention discloses a screening device for rice production and processing, belonging to the technical field of screening devices, comprising a screening box, wherein a material transfer member is rotatably connected inside the screening box, wherein the material transfer member comprises a rotating rod, wherein a spiral material disc is sleeved and fixed on the rotating rod, and the lower end of the rotating rod can drive the screening box to vibrate up and down, and a dust collecting member is installed on the side wall of the screening box, wherein the dust collecting member comprises a dust collecting branch pipe, and one end of the dust collecting branch pipe corresponds to the screening box and the upper part of the spiral material disc. The invention has a material transfer member and a screening member that cooperate with each other to perform multi-stage screening operations on rice raw materials, thereby enhancing the screening quality and efficiency, and the dust collecting member facilitates the dust collection process of the rice raw materials at each screening stage, and the screening box is easy to disassemble and assemble, and is flexible to use, thereby facilitating the technical effect of further enhancing the working efficiency of rice screening.

Description

Technical Field

[0001] The invention belongs to the technical field of screening equipment, and in particular relates to screening equipment for rice production and processing. Background Art

[0002] Rice contains about 75% carbohydrates, 7%-8% protein, 1.3%-1.8% fat, and is rich in B vitamins, etc. During the production and processing of rice, it is often necessary to pre-treat it to ensure that there are no impurities in the rice and that the rice in the same package has the same fullness.

[0003] To this end, a Chinese patent with patent number CN113976429B discloses a screening device for rice production and processing with a dust removal mechanism, including a base, the base is a rectangular structure and a moving block is movably arranged on the upper part thereof, the moving block is connected to a receiving bucket arranged on the upper part thereof through a telescopic kit connected thereto, and the receiving bucket is connected to a screening plate arranged parallel to the receiving bucket through a connecting plate; the bottom surface of the receiving bucket is inclined, and a plurality of through holes are arranged at the bottom of the screening plate; the receiving bucket and the telescopic kit are rotatably connected, and an inclined contact rod is fixedly installed on the rotating shaft of the receiving bucket, the contact rod cooperates with a vertical rod installed on the base, and the receiving bucket and the telescopic kit are also connected by an elastic component; the dust removal mechanism allows the rice raw material to enter the dust removal box through the deceleration bucket, and under the action of the fan, the dust in the rice grains is blown away, and the dust escapes from the ventilation holes opened on the other side wall of the dust removal box, and the rice after the dust removal is completed is accumulated at the bottom of the dust removal box, so as to realize the dust removal and screening of the rice.

[0004] However, in the process of rice processing and screening, multi-stage screening is often required. The above device is only convenient for single screening work. When the next screening work is required, the equipment must be stopped first and then the screening plate must be replaced, which affects the screening efficiency. Summary of the invention

[0005] In view of the problems existing in the prior art, the present invention provides a screening device for rice production and processing, which is equipped with a material transfer part and a screening part that cooperate with each other to perform multi-stage screening operations on rice raw materials. Each layer of the screening box can perform independent uniform feeding and vibration screening operations, thereby enhancing the screening quality and efficiency. In addition, the dust suction part is convenient for vacuuming the rice raw materials at each screening stage. The screening box is easy to disassemble and assemble, and is flexible to use, which is conducive to further enhancing the efficiency of rice screening work. It solves the problem in the prior art that it is only convenient to perform a single screening work, and when the next screening work is required, the equipment needs to be stopped first, and then the screening plate needs to be replaced, which affects the screening work efficiency.

[0006] The present invention is achieved as follows: a screening device for rice production and processing comprises a screening box, wherein a material transfer member is rotatably connected inside the screening box, wherein the material transfer member comprises a rotating rod, wherein a spiral material disc is sleeved and fixed on the rotating rod, a screening member is installed between the upper and lower ends of the rotating rod, and the screening member comprises a screening box, wherein a screening plate is fixedly connected inside the screening box by bolts, wherein the outer wall of the screening box is positioned and supported on both sides of the material transfer member by elastic members, and the lower end of the rotating rod can drive the screening box to vibrate up and down, and a dust collecting member is installed on the side wall of the screening box, wherein the dust collecting member comprises a dust collecting branch pipe, and one end of the dust collecting branch pipe corresponds to the screening box and the top of the spiral material disc.

[0007] With this arrangement, the screening box can be automatically and evenly fed through the material transfer member, which is beneficial to avoid excessive accumulation of rice raw materials on the screening plate to cause blockage, and is beneficial to ensuring the normal screening work and the screening efficiency. The material transfer member and the screening member cooperate with each other to perform multi-stage screening operations on the rice raw materials, thereby enhancing the screening quality and efficiency, and then facilitating separate and even feeding and vibration screening operations on each layer of the screening box, thereby effectively improving the screening work efficiency. At the same time, the dust collection member facilitates the dust collection treatment of the rice raw materials at each screening stage, and the dust removal effect is sufficient, which is beneficial to further enhancing the rice screening work efficiency.

[0008] As a preferred embodiment of the present invention, the rotating rods are evenly distributed from top to bottom along the interior of the screening box, the top of the rotating rod is connected to the top of the screening box through a bearing, a motor is fixedly installed on the top of the screening box, the output end of the motor is fixedly connected to the top of the rotating rod, and the bottom of the rotating rod is connected to the bottom of the screening box through a bearing.

[0009] This arrangement effectively improves the stability of the connection structure between the rotating rod and the screening box. When the motor is started, it is easy to drive multiple rotating rods to rotate synchronously and stably, and it is easy to drive multiple spiral material trays to rotate stably, so that multiple screening boxes can perform vibration screening operations at the same time, which is convenient for ensuring the stable operation of the material transfer work, is conducive to realizing multi-stage screening operations, and effectively improves the screening efficiency.

[0010] As a preferred embodiment of the present invention, a connecting rod is fixedly passed through the upper end side wall of the rotating rod, a support rod is fixedly connected between the ends of the connecting rod, the elastic member is slidably sleeved on the support rod, a swivel is sleeved on the outer wall of the screening box through a bearing, a positioning block is fixedly connected to the outer wall of the swivel, the end of the positioning block is inserted into the support rod, and the bottom of the positioning block is adsorbed and fixed to the top of the elastic member.

[0011] Through this arrangement, the stability of the connection structure between the rotating rods is effectively enhanced through the connecting rod and the support rod, so that when the motor is started, it is convenient to drive multiple rotating rods to operate synchronously. The screening box is plugged into the support rod through the positioning card block, and the positioning card block is rotatably connected to the screening box through a swivel, so that when the rotating rod drives the support rod and the positioning card block to rotate synchronously, it will not drive the screening box to rotate synchronously. At the same time, the elastic part can elastically support the screening box, thereby effectively improving the stability of the screening box installation structure, making it convenient for the screening box to slide up and down along the support rod, and then making it convenient for the screening box to drive the screening plate to perform the screening operation of vibrating up and down.

[0012] As a preferred embodiment of the present invention, the elastic member includes a spring, both ends of the spring are fixedly connected with a slide, the lower slide is sleeved and fixed on the support rod, the upper slide is slidably sleeved on the support rod, the top of the upper slide is fixedly connected with a second magnetic sheet, a positioning slot is provided on one side wall of the positioning block, the positioning slot is plugged into the support rod, the bottom of the positioning block is fixedly connected with a first magnetic sheet, and the first magnetic sheet is adsorbed and fixed to the second magnetic sheet.

[0013] Through this arrangement, the first magnetic sheet absorbs the second magnetic sheet, which facilitates the stable connection between the elastic member and the positioning block, and then facilitates the stable installation of the screening box on the support rod. Similarly, when the screening box needs to be disassembled, the positioning block is separated from the support rod and the first magnetic sheet is driven to separate from the second magnetic sheet. The operation is flexible and convenient.

[0014] As a preferred embodiment of the present invention, the end of the positioning block corresponding to the open end of the positioning slot is threadedly connected with a positioning screw, a positioning baffle is sleeved and fixed on the positioning screw, and the positioning baffle is clamped on the open end of the positioning slot.

[0015] With this arrangement, when the screening box needs to be installed, first push the slide plate downward to squeeze the spring, then hold the screening box by hand and place it between the rotating rods, drive the positioning slot to be inserted into the corresponding support rod, and drive the first magnetic piece of the positioning block to adsorb the second magnetic piece of the slide plate, release the slide plate and reset the spring, so that the spring can stably support the screening box, and then, turn the positioning screw downward to drive the positioning baffle to rotate until the positioning baffle closes the opening of the positioning slot, thereby effectively ensuring the stability of the connection structure between the screening box and the support rod. When the screening box needs to be disassembled, the reverse operation can be performed, which makes the screening box easy to disassemble and assemble, saves time and effort, and has high flexibility in use.

[0016] As a preferred embodiment of the present invention, a support tube is fixedly connected to one end of the top of the screening box, a feed tray is fixedly connected to the end of the support tube, the middle part of the feed tray is slidably sleeved on the rotating rod, a feed port is provided at the bottom end of the feed tray, a discharge pipe is fixedly connected to the side wall at the other end of the screening box, the screening plate is arranged in an inclined structure, and the feed port and the discharge pipe correspond to the upper and lower ends of the screening plate respectively.

[0017] Through this arrangement, when screening is carried out, the rice raw material enters the spiral feed tray through the hopper on the top of the screening box, so that the raw material is evenly transported, which is beneficial to avoid the situation where too much raw material is directly poured onto the screening plate to cause blockage and affect the screening efficiency, thereby ensuring the screening efficiency. Subsequently, the rice raw material passes through the feed tray and the feed port in turn to reach the screening plate. After vibration screening, qualified rice passes through the screening plate and falls into the discharge pipe, and enters the next spiral feed tray for spreading and transportation, and then enters the next screening box for another screening operation, and so on and so forth, thereby realizing multi-stage screening operation of the rice raw material, and effectively enhancing the screening work efficiency.

[0018] As a preferred embodiment of the present invention, a support plate is fixedly connected to the top of the screening box, a push block is fixedly connected to the support plate, the push block is arranged in a wedge-shaped structure, a protrusion is installed at the lower end of the rotating rod, and the protrusion slides against the push block.

[0019] With this arrangement, when the motor is started, the rotating rod, supporting rod, connecting rod, spiral material plate, positioning block and swivel are driven to rotate synchronously, and the screening box and the push block will not rotate accordingly. At this time, the rotating rod drives the protrusion to rotate, and then the protrusion pushes the push block, so that the push block drives the screening box to move downward and squeezes the spring. When the protrusion passes over the push block, the spring drives the push block and the screening box to move upward and reset, thereby realizing the up and down vibration screening operation of the screening plate.

[0020] As a preferred embodiment of the present invention, a push rod is provided at the lower end of the rotating rod, a threaded section is opened on the upper end side wall of the push rod, the push rod is threadedly connected to the rotating rod through the threaded section, a round wheel is sleeved and fixed on the lower end of the push rod, the protrusion is fixedly connected to the side wall of the round wheel, and the protrusions are evenly distributed on the round wheel in a circular array.

[0021] With this arrangement, the stability of the connection structure between the protrusion and the rotating rod is effectively improved through the push rod, and the push rod is convenient to assemble and disassemble and flexible to use through the threaded section.

[0022] As a preferred embodiment of the present invention, the dust suction branch pipe is fixedly connected to the side wall of the screening box, the other end of the dust suction branch pipe is fixedly connected to the dust suction main pipe, a fan is fixedly installed on the bottom side wall of the screening box, and the suction end of the fan is fixedly connected to the dust suction main pipe.

[0023] Through this arrangement, the fan is started, and the dust and powder in the screening process are sucked out to the outside of the screening box through the dust suction branch pipe and the dust suction main pipe, so that the rice raw materials in the screening operation at each level can be dust-removed. The dust removal effect is sufficient, which is conducive to further enhancing the screening efficiency of rice.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows: the screening box can be automatically and evenly loaded through the material transfer member, which is beneficial to avoid excessive accumulation of rice raw materials on the screening plate to cause blockage, and is beneficial to ensuring the normal screening work and the screening efficiency. Through the mutual cooperation of the material transfer member and the screening member, the rice raw materials can be subjected to multi-stage up and down vibration screening operations, thereby enhancing the screening quality and efficiency, and then each layer of the screening box can be conveniently subjected to separate even loading and vibration screening operations, thereby effectively improving the screening work efficiency. At the same time, the dust collection member can conveniently carry out dust collection treatment on the rice raw materials at each screening stage, and the dust removal effect is sufficient, which is beneficial to further enhancing the rice screening work efficiency. Moreover, through the cooperation of the rotating ring, the positioning card block, the positioning card slot, the positioning screw, the positioning baffle, the first magnetic sheet and the second magnetic sheet, the screening box is easy to disassemble and assemble, and is flexible and convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure provided by an embodiment of the present invention;

[0026] Figure 2 is a schematic diagram of a cross-sectional structure provided by an embodiment of the present invention;

[0027] Figure 3 It is a schematic diagram of the internal left side structure provided by an embodiment of the present invention;

[0028] Figure 4 It is a schematic diagram of the internal right side structure provided by an embodiment of the present invention;

[0029] Figure 5 is a schematic diagram of the structure of a screening box provided by an embodiment of the present invention;

[0030] Figure 6 The embodiment of the present invention provides Figure 2 The middle part is an enlarged structural diagram;

[0031] Figure 7 The embodiment of the present invention provides Figure 4 The enlarged structural diagram at A in the middle;

[0032] Figure 8 It is a schematic diagram of the push rod structure provided by an embodiment of the present invention.

[0033] In the figure: 1. screening box; 2. rotating rod; 201. motor; 202. spiral material plate; 203. supporting rod; 204. connecting rod; 3. screening box; 301. screening plate; 302. supporting pipe; 303. feeding plate; 304. discharging pipe; 305. feeding port; 306. supporting plate; 307. pushing block; 308. rotating ring; 4. dust suction branch pipe; 401. dust suction main pipe; 402. fan; 5. positioning block; 501. positioning slot; 502. positioning baffle; 503. positioning screw; 504. first magnetic piece; 6. spring; 601. slide plate; 602. second magnetic piece; 7. pushing rod; 701. round wheel; 702. bump; 703. threaded section. DETAILED DESCRIPTION

[0034] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0035] The structure of the present invention is described in detail below in conjunction with the accompanying drawings.

[0036] refer to Figures 1 to 8 As shown, a screening device for rice production and processing provided by an embodiment of the present invention comprises a screening box 1, wherein the screening box 1 is rotatably connected to a material transfer member inside, wherein the material transfer member comprises a rotating rod 2, wherein a spiral material disc 202 is sleeved and fixed on the rotating rod 2, a screening member is installed between the upper and lower ends of the rotating rod 2, wherein the screening member comprises a screening box 3, wherein a screening plate 301 is fixedly connected to the inside of the screening box 3 by bolts, wherein the outer wall of the screening box 3 is positioned and supported on both sides of the material transfer member by elastic members, wherein the lower end of the rotating rod 2 can drive the screening box 3 to vibrate up and down, and a dust collecting member is installed on the side wall of the screening box 1, wherein the dust collecting member comprises a dust collecting branch pipe 4, wherein one end of the dust collecting branch pipe 4 corresponds to the screening box 3 and the upper part of the spiral material disc 202.

[0037] By adopting the above scheme, the screening box 3 can be automatically and evenly loaded with materials through the material transfer member, which is beneficial to avoid excessive accumulation of rice raw materials on the screening plate 301 to cause blockage, and is beneficial to ensuring the normal screening work and the screening efficiency. The material transfer member and the screening member cooperate with each other to perform multi-stage screening operations on the rice raw materials, thereby enhancing the screening quality and efficiency. In addition, the dust collection member is convenient for dust collection of the rice raw materials at each screening stage, and the dust removal effect is sufficient, which is beneficial to further enhance the working efficiency of rice screening.

[0038] Specifically, the rotating rods 2 are evenly distributed from top to bottom along the inside of the screening box 1, the top of the rotating rod 2 is connected to the top of the screening box 1 through a bearing, a motor 201 is fixedly installed on the top of the screening box 1, and the output end of the motor 201 is fixedly connected to the top of the rotating rod 2, and the bottom of the rotating rod 2 is connected to the bottom of the screening box 1 through a bearing.

[0039] The above scheme effectively improves the stability of the connection structure between the rotating rod 2 and the screening box 1. When the motor 201 is started, it is convenient to drive multiple rotating rods 2 to rotate synchronously and stably, and it is convenient to drive multiple spiral material plates 202 to rotate stably, so that multiple screening boxes 3 can perform vibration screening operations at the same time, which is convenient to ensure the stable operation of the material transfer work, is conducive to realizing multi-stage screening operations, and effectively improves the screening efficiency.

[0040] Specifically, a connecting rod 204 is fixedly passed through the upper side wall of the rotating rod 2, a support rod 203 is fixedly connected between the ends of the connecting rod 204, the elastic member is slidably sleeved on the support rod 203, a rotating ring 308 is sleeved on the outer wall of the screening box 3 through a bearing, a positioning block 5 is fixedly connected to the outer wall of the rotating ring 308, the end of the positioning block 5 is inserted into the support rod 203, and the bottom of the positioning block 5 is adsorbed and fixed to the top of the elastic member.

[0041] The above scheme is adopted: the stability of the connection structure between the rotating rods 2 is effectively enhanced by the connecting rod 204 and the support rod 203, so that when the motor 201 is started, it is convenient to drive multiple rotating rods 2 to operate synchronously, and the screening box 3 is plugged into the support rod 203 through the positioning block 5, and the positioning block 5 is rotatably connected to the screening box 3 through the swivel 308, so that when the rotating rod 2 drives the support rod 203 and the positioning block 5 to rotate synchronously, it will not drive the screening box 3 to rotate synchronously. At the same time, the elastic member can elastically support the screening box 3, thereby effectively improving the stability of the installation structure of the screening box 3, facilitating the screening box 3 to slide up and down along the support rod 203, and then facilitating the screening box 3 to drive the screening plate 301 to perform the screening operation of vibrating up and down.

[0042] Specifically, the elastic member includes a spring 6, both ends of which are fixedly connected with a slide plate 601, the lower slide plate 601 is sleeved and fixed on the support rod 203, the upper slide plate 601 is slidably sleeved on the support rod 203, the top of the upper slide plate 601 is fixedly connected with a second magnetic sheet 602, a positioning slot 501 is opened on one side wall of the positioning block 5, the positioning slot 501 is plugged into the support rod 203, the bottom of the positioning block 5 is fixedly connected with a first magnetic sheet 504, and the first magnetic sheet 504 and the second magnetic sheet 602 are adsorbed and fixed.

[0043] The above scheme is adopted: the first magnetic sheet 504 absorbs the second magnetic sheet 602, so as to ensure the stable connection between the elastic member and the positioning block 5, and then facilitate the stable installation of the screening box 3 on the support rod 203. Similarly, when the screening box 3 needs to be disassembled, the positioning block 5 is separated from the support rod 203, and the first magnetic sheet 504 is driven to separate from the second magnetic sheet 602. The operation is flexible and convenient.

[0044] Specifically, the end of the positioning block 5 corresponding to the open end of the positioning slot 501 is threadedly connected with a positioning screw 503 , and a positioning baffle 502 is sleeved and fixed on the positioning screw 503 . The positioning baffle 502 is clamped on the open end of the positioning slot 501 .

[0045] The above scheme is adopted: when the screening box 3 needs to be installed, first push the slide plate 601 downward to squeeze the spring 6, then hold the screening box 3 and put it between the rotating rods 2, drive the positioning slot 501 to be inserted into the corresponding support rod 203, and drive the first magnetic piece 504 of the positioning block 5 to adsorb the second magnetic piece 602 of the slide plate 601, release the slide plate 601, and the spring 6 is reset, so that the spring 6 stably supports the screening box 3, and then, turn the positioning screw 503 downward, that is, drive the positioning baffle 502 to rotate until the positioning baffle 502 closes the opening of the positioning slot 501, thereby effectively ensuring the stability of the connection structure between the screening box 3 and the support rod 203. When the screening box 3 needs to be disassembled, the reverse operation can be performed, so that the screening box 3 is convenient to disassemble and assemble, saving time and effort, and having high flexibility in use.

[0046] Specifically, a support tube 302 is fixedly connected to one end of the top of the screening box 3, a feed tray 303 is fixedly connected to the end of the support tube 302, the middle part of the feed tray 303 is slidably sleeved on the rotating rod 2, a feed port 305 is provided at the bottom end of the feed tray 303, a discharge pipe 304 is fixedly connected to the side wall at the other end of the screening box 3, the screening plate 301 is arranged in an inclined structure, and the feed port 305 and the discharge pipe 304 correspond to the upper and lower ends of the screening plate 301, respectively.

[0047] The above scheme is adopted: when the screening work is carried out, the rice raw material enters the spiral feed tray 202 through the hopper on the top of the screening box 1, so that the raw material is evenly transported, which is beneficial to avoid the situation where too much raw material is directly poured onto the screening plate 301 to cause blockage and affect the screening efficiency, thereby ensuring the screening efficiency. Subsequently, the rice raw material passes through the feed tray 303 and the feed port 305 in turn to reach the screening plate 301. After vibration screening, the qualified rice passes through the screening plate 301 and falls into the discharge pipe 304, and enters the next spiral feed tray 202 for spreading and transportation, and then enters the next screening box 3 for another screening operation, and so on and so forth, thereby realizing multi-stage screening operation of the rice raw material, effectively enhancing the screening work efficiency.

[0048] Specifically, a support plate 306 is fixedly connected to the top of the screening box 3, a push block 307 is fixedly connected to the support plate 306, and the push block 307 is arranged in a wedge-shaped structure. A protrusion 702 is installed at the lower end of the rotating rod 2, and the protrusion 702 slides against the push block 307.

[0049] The above scheme is adopted: when the motor 201 is started, the rotating rod 2, the supporting rod 203, the connecting rod 204, the spiral material plate 202, the positioning block 5 and the rotating ring 308 are driven to rotate synchronously, and the screening box 3 and the push block 307 will not rotate accordingly. At this time, the rotating rod 2 drives the protrusion 702 to rotate, and then the protrusion 702 pushes the push block 307, so that the push block 307 drives the screening box 3 to move downward and squeeze the spring 6. When the protrusion 702 passes over the push block 307, the spring 6 drives the push block 307 and the screening box 3 to move upward and reset, thereby realizing the up and down vibration screening operation of the screening plate 301.

[0050] Specifically, a push rod 7 is provided at the lower end of the rotating rod 2, and a threaded section 703 is provided on the upper end side wall of the push rod 7. The push rod 7 is threadedly connected to the rotating rod 2 through the threaded section 703. A round wheel 701 is sleeved and fixed on the lower end of the push rod 7. The protrusions 702 are fixedly connected to the side wall of the round wheel 701, and the protrusions 702 are evenly distributed on the round wheel 701 in a circular array.

[0051] With the above solution, the push rod 7 effectively improves the stability of the connection structure between the protrusion 702 and the rotating rod 2, and the threaded section 703 makes the push rod 7 easy to assemble and disassemble and flexible to use.

[0052] Specifically, the dust suction branch pipe 4 is fixedly connected to the side wall of the screening box 1, and the other end of the dust suction branch pipe 4 is fixedly connected to the dust suction main pipe 401. A fan 402 is fixedly installed on the bottom side wall of the screening box 1, and the suction end of the fan 402 is fixedly connected to the dust suction main pipe 401.

[0053] By adopting the above scheme: starting the fan 402, the dust and powder in the screening process are sucked out to the outside of the screening box 1 through the dust suction branch pipe 4 and the dust suction main pipe 401, so as to realize the dust removal of the rice raw materials in the screening operation at each level, and the dust removal effect is sufficient, which is conducive to further enhancing the screening efficiency of rice.

[0054] Working principle of the present invention:

[0055] When in use, the screening plate 301 can be selected with screen holes of different specifications to facilitate multi-stage screening of rice. First, the motor 201 is started, and the rice raw material enters the spiral feed plate 202 through the hopper on the top of the screening box 1, so that the raw material is evenly transported. Subsequently, the rice raw material passes through the feed plate 303 and the feed port 305 in turn to reach the screening plate 301, and the rotating rod 2 drives the protrusion 702 to rotate through the push rod 7 and the round wheel 701, and the protrusion 702 repeatedly pushes and passes over the push block 307, that is, drives the screening box 3 and the screening plate 301 to elastically squeeze the spring 6. And reset, then realize the up and down vibration screening operation of the screening plate 301. After vibration screening, the qualified rice falls into the discharge pipe 304 through the screening plate 301, and enters the next spiral material tray 202 for spreading and transportation, and then enters the next level of screening box 3 for screening operation, and so on and so forth, realizes the multi-stage screening operation of the rice raw material, effectively enhances the screening work efficiency, at the same time, the fan 402 is started, and the dust removal operation is performed on the rice raw material in the screening work at each level through the dust suction branch pipe 4, thereby improving the screening efficiency, and finally, the screened rice is discharged through the bottom of the screening box 1.

[0056] When it is necessary to disassemble the screening box 3, the screening work is completed and the appliance stops operating. Open the front door of the screening box 1, first turn the positioning screw 503 upwards to make the positioning baffle 502 disengage from the positioning slot 501, then push the screening box 3 downward to squeeze the spring 6, and then twist the push rod 7 to disengage from the rotating rod 2 and take it out, continue to squeeze the spring 6 until the feed plate 303 is disengaged from the rotating rod 2, and then pull the screening plate to make the positioning slot 501 disengage from the support rod 203, so as to realize the quick disassembly and assembly of the screening box 3, which is flexible and convenient to operate, saving time and effort.

[0057] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0058] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A screening device for rice production and processing, comprising a screening box (1), characterized in that: A material transfer member is rotatably connected to the interior of the screening box (1), the material transfer member comprising a rotating rod (2), a spiral material disc (202) being sleeved and fixed on the rotating rod (2), a screening member being installed between the upper and lower ends of the rotating rod (2), the screening member comprising a screening box (3), a screening plate (301) being fixedly connected to the interior of the screening box (3) by bolts, the outer wall of the screening box (3) being positioned and supported on both sides of the material transfer member by elastic members, the lower end of the rotating rod (2) being able to drive the screening box (3) to vibrate up and down, a dust collecting member being installed on the side wall of the screening box (1), the dust collecting member comprising a dust collecting branch pipe (4), one end of the dust collecting branch pipe (4) corresponding to the screening box (3) and the spiral material disc (202). At the top, the rotating rods (2) are evenly distributed from top to bottom along the interior of the screening box (1); the top of the rotating rod (2) is connected to the top of the screening box (1) via a bearing; a motor (201) is fixedly mounted on the top of the screening box (1); the output end of the motor (201) is fixedly connected to the top of the rotating rod (2); the bottom of the rotating rod (2) is connected to the bottom of the screening box (1) via a bearing; a connecting rod (204) is fixedly passed through the upper side wall of the rotating rod (2); a supporting rod (203) is fixedly connected between the ends of the connecting rod (204); the elastic member is slidably sleeved on the supporting rod (203); a rotating ring (308) is sleeved on the outer wall of the screening box (3) via a bearing; A positioning block (5) is fixedly connected to the outer wall of the rotating ring (308), the end of the positioning block (5) is plugged into the support rod (203), and the bottom of the positioning block (5) is fixedly adsorbed to the top of the elastic member, the elastic member comprises a spring (6), both ends of the spring (6) are fixedly connected to a slide plate (601), the lower slide plate (601) is sleeved and fixed on the support rod (203), the upper slide plate (601) is slidably sleeved on the support rod (203), the top of the upper slide plate (601) is fixedly connected to a second magnetic sheet (602), a positioning slot (501) is provided on one side wall of the positioning block (5), the positioning slot (501) is plugged into the support rod (203), The bottom of the positioning block (5) is fixedly connected to a first magnetic sheet (504), and the first magnetic sheet (504) and the second magnetic sheet (602) are fixed by adsorption. A support tube (302) is fixedly connected to one end of the top of the screening box (3), and a feed tray (303) is fixedly connected to the end of the support tube (302). The middle of the feed tray (303) is slidably sleeved on the rotating rod (2). A feed port (305) is provided at the bottom end of the feed tray (303). A discharge pipe (304) is fixedly connected to the side wall at the other end of the screening box (3). The screening plate (301) is arranged in an inclined structure, and the feed port (305) and the discharge pipe (304) correspond to the upper and lower ends of the screening plate (301), respectively.The top of the screening box (3) is fixedly connected to a support plate (306), and a push block (307) is fixedly connected to the support plate (306). The push block (307) is arranged in a wedge-shaped structure. A protrusion (702) is installed at the lower end of the rotating rod (2), and the protrusion (702) slides against the push block (307). A push rod (7) is arranged at the lower end of the rotating rod (2). A threaded section (703) is provided on the upper side wall of the push rod (7). The push rod (7) is threadedly connected to the rotating rod (2) via the threaded section (703). A round wheel (701) is sleeved and fixed at the lower end of the push rod (7). The protrusion (702) is fixedly connected to the side wall of the round wheel (701), and the protrusions (702) are evenly distributed on the round wheel (701) in a circular array.

2. A screening device for rice production and processing as claimed in claim 1, characterized in that: The end of the positioning block (5) corresponding to the open end of the positioning slot (501) is threadedly connected with a positioning screw (503), a positioning baffle (502) is sleeved and fixed on the positioning screw (503), and the positioning baffle (502) is clamped on the open end of the positioning slot (501).

3. A screening device for rice production and processing as claimed in claim 1, characterized in that: The dust suction branch pipe (4) is fixedly connected to the side wall of the screening box (1), and the other end of the dust suction branch pipe (4) is fixedly connected to the dust suction main pipe (401). A fan (402) is fixedly installed on the bottom side wall of the screening box (1), and the air suction end of the fan (402) is fixedly connected to the dust suction main pipe (401).

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