Grain light impurity winnowing machine

Abstract

The utility model discloses a grain light impurity winnowing machine, and belongs to the field of grain processing equipment. The problem that it is difficult to clean the inner wall of a dust removal box and it is difficult to clean an internal filter plate is solved. A feeding box is fixedly installed on the machine frame, a feeding hopper is fixedly installed on the top of the feeding box, an air return box is fixedly connected to one side of the feeding box, an air exhaust mechanism is fixedly installed on the machine frame, the end, away from the feeding box, of the air return box is fixedly connected with the air exhaust mechanism, and a vibration plate is movably installed on the machine frame. According to the grain winnowing device, air is driven by the air exhaust fan to winnow grains, meanwhile, the wind cup is driven to drive the driving rotating rod and the driven rotating rod to rotate synchronously, and the movable nut and the scraper blade are driven to reciprocate up and down, so that dust attached to the inner wall of the box body is scraped away; meanwhile, the reciprocating driving magnetic block drives the moving block to periodically impact the inner wall of the box body, so that dust and impurities in the filter plate fall off, and the filter plate is cleaned.

Description

Technical Field

[0001] The utility model relates to the field of grain processing equipment, in particular to a grain light impurity winnowing machine. Background Art

[0002] A grain winnowing machine is a machine used to remove impurities and light objects from grain. It is usually used in the agricultural field, especially in the process of grain processing and storage. The principle is to use the different forces of wind and gravity to blow away light objects such as chaff and husks, and separate impurities such as stones, sand, etc., thereby improving the quality and purity of the grain.

[0003] However, during the use of the grain air separator in the prior art, dust may be mixed in the grain. During the air separation process, the dust enters the dust removal box along with the flowing air. The air is filtered by the filter plate. After a long period of operation, some dust may adhere to the inner wall of the dust removal box, affecting the air circulation and dust removal effect. Since the dust removal box is located inside the frame, the frame needs to be disassembled for cleaning, which is complicated and difficult to clean the inner wall of the dust removal box.

[0004] When the filter plate is filtering dust, larger dust particles are easily stuck on the filter plate, causing the filter holes to be blocked, affecting the air flow and filtering effect. If you want to clean the filter plate, you need to stop the machine and open the dust removal box, which affects the continuity of work and makes it difficult to clean the internal filter plate.

[0005] In view of the above technical defects, a solution is now proposed. Utility Model Content

[0006] The utility model aims to provide a grain light impurity winnowing machine to solve the technical defects proposed by the background technology.

[0007] The purpose of the utility model can be achieved through the following technical scheme: a light impurity air separator for grains, comprising a frame, a feed box is fixedly mounted on the frame, a feed hopper is fixedly mounted on the top of the feed box, a return air box is fixedly connected to one side of the feed box, an exhaust mechanism is fixedly mounted on the frame, one end of the return air box away from the feed box is fixedly connected to the exhaust mechanism, a vibration plate is movably mounted on the frame, and the vibration plate is located below the feed box.

[0008] Preferably, the exhaust mechanism includes a box body and an exhaust fan, the exhaust fan is fixedly installed on one side of the box body, the return air box is fixedly connected to the side of the box body away from the exhaust fan, the air inlet end of the exhaust fan is connected to the interior of the box body, a filter plate is fixedly installed inside the box body, and a dust collection box is fixedly installed at the bottom of the box body.

[0009] Preferably, an active rotating rod and a driven rotating rod are movably installed inside the box body, and both the active rotating rod and the driven rotating rod are located below the filter plate. A plurality of connecting rods are fixedly installed at the center of the active rotating rod, and a wind cup is fixedly installed at the end of the connecting rod, and the wind cup is located at the connection between the return air box and the box body.

[0010] Preferably, a driving rotating wheel is fixedly mounted on the driving rotating rod, a driven rotating wheel is fixedly mounted on the driven rotating rod, the driving rotating wheel and the driven rotating wheel are connected by a belt drive, bevel gear 1 is fixedly mounted on both ends of the driving rotating rod and the driven rotating rod, and bevel gear 1 is meshingly connected with bevel gear 2.

[0011] Preferably, a reciprocating screw is fixedly installed on the top of bevel gear 2, and a fixed block is movably connected to the end of the reciprocating screw away from bevel gear 2. The top of the fixed block is fixedly connected to the inner wall of the box. A movable nut is movably installed on the reciprocating screw through a thread. A scraper is fixedly connected to the side of the movable nut close to the inner wall of the box, and the scraper is in contact with the inner wall of the box.

[0012] Preferably, a cavity is provided inside the fixed block, a moving block is movably installed in the cavity, a moving magnet is fixedly installed at the bottom of the moving block, a reset spring is fixedly connected to the bottom of the moving magnet, one end of the reset spring away from the moving magnet is fixedly connected to the inner wall of the fixed block, a driving magnet is fixedly installed on the top of the moving nut, and the driving magnet and the moving magnet are attracted to each other.

[0013] The beneficial effects of the utility model are as follows:

[0014] (1) The utility model uses the active rotating rod and the reciprocating screw rod in coordination. When the grain is subjected to air selection processing, the exhaust fan is first started, and the exhaust fan is used to extract the air inside the feed box through the return air box. In the process of pouring the grain from the feed hopper into the feed box, the flowing air brings the impurities mixed in the grain into the return air box. Large impurities will accumulate at the bottom of the return air box under the action of gravity. Some small particles and dust enter the box body with the flowing air and are discharged by the exhaust fan after being filtered by the filter plate. When the air flows into the box body, the wind cup drives the active rotating rod to rotate under the action of wind force. The driven rotating wheel rotates synchronously with the driving rotating wheel through the transmission coordination of the active rotating wheel and the driven rotating wheel. Under the action of the bevel gear 1 and the bevel gear 2, the reciprocating screw rod starts to rotate. At this time, the moving nut makes a reciprocating motion up and down under the action of the thread, thereby driving the scraper to scrape off the dust and impurities attached to the inner wall of the box body. The scraped dust and impurities fall into the dust collecting box and are uniformly processed to achieve the cleaning of the inner wall of the box body.

[0015] (2) The utility model uses a moving magnet and a driving magnet in coordination. In the initial state, the elastic force of the reset spring is equal to the sum of the weight of the moving magnet and the moving block. The moving block is in a stable state and the reset spring is in an expanded state. During the up and down reciprocating motion of the moving nut, when the moving nut moves to the top of the reciprocating screw, the suction force of the driving magnet on the moving magnet and the sum of the weight of the moving magnet and the moving block are greater than the elastic force of the reset spring. The reset spring is in a contracted state and the moving block moves downward. When the moving nut starts to move downward, the suction force decreases and the reset spring pushes the moving block to reset. Subsequently, the top of the moving block collides with the box body, and the box body and the filter plate vibrate slightly. Through periodic collisions, dust and impurities inside the filter plate fall off. There is no need to stop the machine to disassemble the filter plate. The filter plate can be cleaned during use.

[0016] In summary, the utility model realizes cleaning of the inner wall of the box and the filter plate at the same time through the coordinated use of the active rotating rod and the driven rotating rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings;

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a side view of the utility model;

[0020] Figure 3 It is a cross-sectional view of the filter plate in the utility model;

[0021] Figure 4 It is a cross-sectional view of the box body in the utility model;

[0022] Figure 5 yes Figure 4 The structural diagram of part A in the figure;

[0023] Figure 6 It is a structural schematic diagram of the air extraction mechanism in the utility model;

[0024] Figure 7 It is a front view of the air extraction mechanism in the utility model;

[0025] Figure 8 It is a cross-sectional view of the fixing block in the utility model.

[0026] Legend: 1. Frame; 2. Feed box; 201. Feed hopper; 3. Return air box; 4. Exhaust mechanism; 401. Box; 402. Exhaust fan; 403. Filter plate; 404. Dust box; 405. Active rotating rod; 406. Driven rotating rod; 407. Connecting rod; 408. Wind cup; 409. Active rotor; 410. Driven rotor; 411. Bevel gear 1; 412. Bevel gear 2; 413. Reciprocating screw; 414. Fixed block; 415. Moving nut; 416. Scraper; 417. Cavity; 418. Moving block; 419. Moving magnet; 420. Reset spring; 421. Driving magnet; 5. Vibration plate. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Embodiment 1:

[0029] The present embodiment is used to solve the problem that during the use of the grain winnowing machine in the prior art, dust will be mixed in the grain. During the winnowing process, the dust enters the dust removal box with the flowing air, and the air is filtered by the filter plate. After working for a long time, some dust will adhere to the inner wall of the dust removal box, affecting the air circulation and dust removal effect. Since the dust removal box is located inside the frame, the frame needs to be disassembled for cleaning, the steps are complicated, and it is difficult to clean the inner wall of the dust removal box.

[0030] See also Figure 1 - Figure 6 As shown, this embodiment is a grain light impurity air separator, including a frame 1, a feed box 2 is fixedly installed on the frame 1, a feed hopper 201 is fixedly installed on the top of the feed box 2, a return air box 3 is fixedly connected to one side of the feed box 2, an exhaust mechanism 4 is fixedly installed on the frame 1, and one end of the return air box 3 away from the feed box 2 is fixedly connected to the exhaust mechanism 4, and a vibration plate 5 is movably installed on the frame 1, and the vibration plate 5 is located below the feed box 2.

[0031] The grain is poured into the feed box 2 from the feed hopper 201. After preliminary air separation by the vacuum mechanism 4, the grain falls onto the vibration plate 5 below. The grain is secondary sorted by vibration, and the guide plate on the vibration plate 5 is used to distinguish and output the grain, thereby completing multiple screening of the grain and ensuring the quality of the grain.

[0032] The exhaust mechanism 4 includes a box body 401 and an exhaust fan 402, the exhaust fan 402 is fixedly installed on one side of the box body 401, the return air box 3 is fixedly connected to the side of the box body 401 away from the exhaust fan 402, the air inlet end of the exhaust fan 402 is connected to the inside of the box body 401, a filter plate 403 is fixedly installed inside the box body 401, a dust collecting box 404 is fixedly installed at the bottom of the box body 401, an active rotating rod 405 and a driven rotating rod 406 are movably installed inside the box body 401, the active rotating rod 405 and the driven rotating rod 406 are both located below the filter plate 403, a plurality of connecting rods 407 are fixedly installed at the center of the active rotating rod 405, and a wind cup 408 is fixedly installed at the end of the connecting rod 407. At the connection between the return air box 3 and the box body 401, a driving wheel 409 is fixedly installed on the driving rotating rod 405, and a driven wheel 410 is fixedly installed on the driven rotating rod 406. The driving wheel 409 and the driven wheel 410 are connected by belt transmission. Bevel gear 1 411 is fixedly installed at both ends of the driving rotating rod 405 and the driven rotating rod 406. Bevel gear 1 411 is meshingly connected with bevel gear 2 412. A reciprocating screw rod 413 is fixedly installed on the top of the bevel gear 2 412. A movable nut 415 is movably installed on the reciprocating screw rod 413 through a thread. A scraper 416 is fixedly connected to the side of the movable nut 415 close to the inner wall of the box body 401, and the scraper 416 is in contact with the inner wall of the box body 401.

[0033] When the grain is subjected to air separation, the exhaust fan 402 is first started, and the air inside the feed box 2 is extracted through the return air box 3 by the exhaust fan 402. In the process of pouring the grain from the feed hopper 201 into the feed box 2, the flowing air brings the impurities mixed in the grain into the return air box 3. Large impurities will accumulate at the bottom of the return air box 3 under the action of gravity, and some small particles and dust will enter the box body 401 with the flowing air, and will be discharged by the exhaust fan 402 after being filtered by the filter plate 403. When the air flows into the box body 401, During the rotation of the motor 405, the wind cup 408 drives the active rotating rod 405 to rotate under the action of wind force, and the driven rotating wheel 410 rotates synchronously with the driving rotating wheel 409 and the driven rotating wheel 410, and the reciprocating screw rod 413 starts to rotate under the action of the bevel gear 1 411 and the bevel gear 2 412. At this time, the moving nut 415 reciprocates up and down under the action of the thread, thereby driving the scraper 416 to scrape off the dust and impurities attached to the inner wall of the box body 401, and the scraped dust and impurities fall into the dust collecting box 404 for unified treatment.

[0034] The inner wall of the box body 401 is cleaned by the coordinated use of the active rotating rod 405 and the reciprocating screw rod 413 .

[0035] Embodiment 2:

[0036] This embodiment is used to solve the problem that when the filter plate is filtering dust, larger particles of dust are easily stuck on the filter plate, causing the filter holes to be blocked, affecting the air flow and filtering effect. If the filter plate needs to be cleaned, it is necessary to stop the machine and open the dust removal box, affecting the continuity of work and making it difficult to clean the internal filter plate.

[0037] See also Figure 7 - Figure 8 As shown, the utility model also includes a fixed block 414, which is movably connected to the top of the reciprocating screw rod 413, and the top of the fixed block 414 is fixedly connected to the inner wall of the box body 401. A cavity 417 is provided inside the fixed block 414, and a moving block 418 is movably installed in the cavity 417. A moving magnet 419 is fixedly installed at the bottom of the moving block 418, and a reset spring 420 is fixedly connected to the bottom of the moving magnet 419. One end of the reset spring 420 away from the moving magnet 419 is fixedly connected to the inner wall of the fixed block 414, and a driving magnet 421 is fixedly installed on the top of the moving nut 415, and the driving magnet 421 and the moving magnet 419 attract each other.

[0038] In the initial state, the elastic force of the return spring 420 is the same as the sum of the gravity of the moving magnet 419 and the moving block 418, the moving block 418 is in a stable state, and the return spring 420 is in an expanded state. In the process of the moving nut 415 making an up and down reciprocating motion, when the moving nut 415 moves to the top of the reciprocating screw rod 413, at this time, the suction force of the driving magnet 421 on the moving magnet 419 and the sum of the gravity of the moving magnet 419 and the moving block 418 are greater than the elastic force of the return spring 420, and the return spring 420 is in a contracted state, and the moving block 418 moves downward. When the moving nut 415 starts to move downward, due to the decrease in suction, the moving block 418 is pushed to reset under the action of the return spring 420, and then the top of the moving block 418 collides with the box 401, and the box 401 and the filter plate 403 vibrate slightly. Through periodic collisions, dust and impurities inside the filter plate 403 fall off, and there is no need to stop the machine to disassemble the filter plate 403.

[0039] By using the movable magnetic block 419 and the driving magnetic block 421 in coordination, the filter plate 403 can be cleaned during use.

[0040] In combination with Example 1 and Example 2, while the air is driven by the exhaust fan 402 to select the grain, the wind cup 408 is also driven to drive the active rotating rod 405 and the driven rotating rod 406 to rotate synchronously, and the reciprocating screw 413 is used to drive the moving nut 415 and the scraper 416 to reciprocate up and down, so as to scrape off the dust and impurities attached to the inner wall of the box 401. At the same time, the reciprocating driving magnetic block 421 drives the moving block 418 to periodically impact the inner wall of the box 401, and the dust and impurities inside the filter plate 403 are dropped by vibration. While the inner wall of the box 401 is cleaned, the filter plate 403 is also cleaned.

[0041] The working process and principle of the utility model are as follows:

[0042] When the grain is subjected to air separation, the exhaust fan 402 is first started, and the air inside the feed box 2 is extracted through the return air box 3 by the exhaust fan 402. In the process of pouring the grain from the feed hopper 201 into the feed box 2, the flowing air brings the impurities mixed in the grain into the return air box 3. Large impurities will accumulate at the bottom of the return air box 3 under the action of gravity, and some small particles and dust will enter the box body 401 with the flowing air, and will be discharged by the exhaust fan 402 after being filtered by the filter plate 403. When the air flows into the box body 401, During the rotation of the wind cup 408, the wind cup 408 drives the active rotating rod 405 to rotate under the action of wind force, and the driven rotating wheel 410 rotates synchronously with the driving rotating wheel 409 and the driven rotating wheel 410, and the reciprocating screw rod 413 starts to rotate under the action of the bevel gear 1 411 and the bevel gear 2 412. At this time, the moving nut 415 reciprocates up and down under the action of the thread, thereby driving the scraper 416 to scrape off the dust and impurities attached to the inner wall of the box body 401, and the scraped dust and impurities fall into the dust collecting box 404 for unified treatment;

[0043] In the initial state, the elastic force of the return spring 420 is the same as the sum of the gravity of the moving magnet 419 and the moving block 418, the moving block 418 is in a stable state, and the return spring 420 is in an expanded state. In the process of the moving nut 415 making an up and down reciprocating motion, when the moving nut 415 moves to the top of the reciprocating screw rod 413, at this time, the suction force of the driving magnet 421 on the moving magnet 419 and the sum of the gravity of the moving magnet 419 and the moving block 418 are greater than the elastic force of the return spring 420, and the return spring 420 is in a contracted state, and the moving block 418 moves downward. When the moving nut 415 starts to move downward, due to the decrease in suction force, the moving block 418 is pushed to reset under the action of the return spring 420, and then the top of the moving block 418 collides with the box body 401, and the box body 401 and the filter plate 403 vibrate slightly. Through periodic collisions, dust and impurities inside the filter plate 403 fall off, and there is no need to stop the machine to disassemble the filter plate 403.

[0044] The utility model can clean the inner wall of the box body 401 and the filter plate 403 at the same time.

[0045] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

[0046] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0047] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A grain light impurity air separator, comprising a frame (1), characterized in that: A feed box (2) is fixedly mounted on the frame (1), a feed hopper (201) is fixedly mounted on the top of the feed box (2), a return air box (3) is fixedly connected to one side of the feed box (2), an exhaust mechanism (4) is fixedly mounted on the frame (1), one end of the return air box (3) away from the feed box (2) is fixedly connected to the exhaust mechanism (4), and a vibration plate (5) is movably mounted on the frame (1), and the vibration plate (5) is located below the feed box (2).

2. A grain light impurity winnowing machine according to claim 1, characterized in that: The air extraction mechanism (4) comprises a box (401) and an air extraction fan (402); the air extraction fan (402) is fixedly mounted on one side of the box (401); the return air box (3) is fixedly connected to a side of the box (401) away from the air extraction fan (402); an air inlet end of the air extraction fan (402) is connected to the interior of the box (401); a filter plate (403) is fixedly mounted inside the box (401); and a dust collection box (404) is fixedly mounted at the bottom of the box (401).

3. A grain light impurity winnowing machine according to claim 2, characterized in that: An active rotating rod (405) and a driven rotating rod (406) are movably installed inside the box body (401), and the active rotating rod (405) and the driven rotating rod (406) are both located below the filter plate (403). A plurality of connecting rods (407) are fixedly installed at the center of the active rotating rod (405), and a wind cup (408) is fixedly installed at the end of the connecting rod (407). The wind cup (408) is located at the connection between the return air box (3) and the box body (401).

4. A grain light impurity winnowing machine according to claim 3, characterized in that: A driving rotating wheel (409) is fixedly mounted on the driving rotating rod (405), and a driven rotating wheel (410) is fixedly mounted on the driven rotating rod (406). The driving rotating wheel (409) and the driven rotating wheel (410) are connected via a belt transmission. Conical gear 1 (411) is fixedly mounted on both ends of the driving rotating rod (405) and the driven rotating rod (406), and the conical gear 1 (411) is meshingly connected with a conical gear 2 (412).

5. A grain light impurity air separator according to claim 4, characterized in that: A reciprocating screw (413) is fixedly mounted on the top of the bevel gear (412); an end of the reciprocating screw (413) away from the bevel gear (412) is movably connected to a fixed block (414); a top of the fixed block (414) is fixedly connected to the inner wall of the box (401); a movable nut (415) is movably mounted on the reciprocating screw (413) via a thread; a scraper (416) is fixedly connected to the side of the movable nut (415) close to the inner wall of the box (401); and the scraper (416) is in contact with the inner wall of the box (401).

6. A grain light impurity winnowing machine according to claim 5, characterized in that: A cavity (417) is provided inside the fixed block (414), a moving block (418) is movably installed in the cavity (417), a moving magnet (419) is fixedly installed at the bottom of the moving block (418), a return spring (420) is fixedly connected to the bottom of the moving magnet (419), one end of the return spring (420) away from the moving magnet (419) is fixedly connected to the inner wall of the fixed block (414), and a driving magnet (421) is fixedly installed on the top of the moving nut (415), and the driving magnet (421) and the moving magnet (419) are attracted to each other.

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