A circulating air screen for wheat seeds

Abstract

The utility model belongs to the screening machine technical field, concretely relates to a wheat seed circulation formula air screening machine, including the box, be provided with the feed air screening mechanism on the box, be provided with the primary screening mechanism below the feed air screening mechanism, be provided with the final screening and grinding mechanism below the primary screening mechanism. Through the final screening and grinding mechanism that sets up, the start double -shaft motor drives the driving umbrella bevel gear and cam to rotate simultaneously, the driving umbrella bevel gear drives the driven umbrella bevel gear rotation, and drives the belt rotation, the belt drives two groups of rotating shafts and grinding wheel rotation simultaneously in rotation, the cam in rotation moves on the concave platform upper surface and is matched with the second spring, and the second lower sieve plate is vibrated, and the granule small quality light impurity and wheat seed are separated through the grinding wheel in rotation, and the granule small quality light impurity that separates is vibrated out the screening box through the second lower sieve plate, and the wheat seed falls into the storage box after screening, guarantees the screening effect, can realize the dynamic screening of wheat seed, and the practicality is strong.

Description

Technical Field

[0001] This utility model belongs to the field of screening machine technology, specifically relating to a circulating air screening machine for wheat seeds. Background Technology

[0002] Wheat seeds are the fruit of the wheat plant, also known as wheat grains. Wheat grains are the reproductive part of the wheat plant, responsible for reproduction. They are typically oval-shaped, about 2-3 millimeters in size. They are surrounded by a hard outer shell called the aleurone layer, which protects the internal endosperm from environmental damage. Inside the wheat grain are three main parts: the endosperm, the embryo, and the germinal disc.

[0003] A search revealed that Chinese utility model patent application CN221361212U discloses a circulating air screening machine for wheat seeds, comprising a housing, a feeding hopper at the top of the housing, a discharge pipe at the bottom of the housing, a guide ramp on the right side wall of the housing located below the feeding hopper, two screening mechanisms located below the guide ramp inside the housing, the two screening mechanisms being arranged vertically, a blower mechanism on the left side wall of the housing, and a collection box connected to the inside of the housing fixed on the right side wall of the housing, the collection box containing a filtering mechanism.

[0004] Regarding the aforementioned technologies, screening mechanisms block impurities in wheat seeds. However, during use, workers need to remove the blocking net and manually clean it, resulting in unsatisfactory separation of small, lightweight impurities from the wheat seeds and poor screening efficiency. This affects the subsequent processing of wheat seeds. Therefore, there is an urgent need to design a circulating air screening machine for wheat seeds to address these issues. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model discloses a circulating air screening machine for wheat seeds.

[0006] This utility model achieves the above objectives through the following technical solutions:

[0007] A circulating air screening machine for wheat seeds includes a housing, a feeding air screening mechanism on the housing, a primary screening mechanism below the feeding air screening mechanism, and a final screening and grinding mechanism below the primary screening mechanism.

[0008] The final screening and grinding mechanism includes a trapezoidal grate fixedly installed below the primary screening mechanism. Two sets of rotating shafts are vertically and parallelly mounted on the trapezoidal grate. A belt is rotatably mounted on the outer surface of one end of each set of rotating shafts, and a grinding wheel is fixedly mounted on the other end of each set of rotating shafts. A driven bevel gear is fixedly mounted on one end of the rotating shaft, and a driving bevel gear is meshed with one side of the driven bevel gear. A dual-shaft motor is fixedly mounted on the side wall of the housing. One end of the dual-shaft motor is fixedly mounted to the driving bevel gear, and a cam is fixedly mounted on the other end of the dual-shaft motor. A screening box is fixedly mounted on one side of the housing, and a coupling is fixedly mounted on the screening box. A second lower screen plate is rotatably mounted on the outer surface of the coupling. A second spring is fixedly installed between the second lower screen plate and the screening box. A recess is fixedly mounted on the second lower screen plate, and a storage box is slidably installed inside the screening box.

[0009] Preferably, the primary screening mechanism includes an inclined box that is movably disposed inside the box body, a first upper screen plate that is fixedly installed inside the inclined box, a vibration motor that is fixedly installed on the inclined box, a first spring that is fixedly installed below the inclined box, a second guide plate that is fixedly installed at the discharge end of the inclined box, and a primary screening receiving assembly that is fixedly installed below the second guide plate.

[0010] Preferably, the feeding air screen mechanism includes an exhaust pipe fixedly installed on the housing, a discharge pipe fixedly installed on the exhaust pipe, a collecting air duct fixedly installed on the discharge pipe, a connecting pipe fixedly installed above the collecting air duct, an exhaust fan fixedly installed at one end of the connecting pipe, a discharge pipe fixedly installed above the housing, a groove fixedly installed longitudinally on the inner side of the housing, a movable platform slidably installed in the groove, a rack fixedly installed above the movable platform, a manual rotation component engaged on one side of the rack, a blower fixedly installed below the exhaust pipe, a first guide plate fixedly installed between the exhaust pipe and the blower, and a sealing and stopping component fixedly installed on the movable platform.

[0011] Preferably, an inclined rolling plate is fixedly installed below the trapezoidal grate, and the inclined rolling plate is rotatably connected to the rotating shaft.

[0012] Preferably, the primary screening receiving assembly includes a first receiving box fixedly installed below the second guide plate, and a material receiving door is rotatably installed on the first receiving box.

[0013] Preferably, the manual rotation assembly includes a cylindrical gear rotatably mounted on one side of the rack, a lever handwheel fixedly mounted on the cylindrical gear, and the lever handwheel being rotatably connected to the housing.

[0014] The beneficial effects are:

[0015] This utility model discloses a circulating air screening machine for wheat seeds. Through a set final screening and grinding mechanism, a dual-shaft motor is started, simultaneously driving the active bevel helical gear and the cam to rotate. The active bevel helical gear drives the driven bevel helical gear to rotate, which in turn drives the belt to rotate. During rotation, the belt drives two sets of rotating shafts and grinding wheels to rotate simultaneously. The rotating cam moves on the surface of the concave platform and cooperates with the second spring to vibrate the second lower screen plate. The rotating grinding wheels grind and separate small, lightweight impurities from the wheat seeds. The separated small, lightweight impurities are shaken out of the screening box through the second lower screen plate, and the screened wheat seeds fall into the storage box. This ensures the screening effect, enables dynamic screening of wheat seeds, and makes the screening more efficient, convenient to use, and highly practical. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a front view structural diagram of the present invention;

[0018] Figure 3 This is a front sectional view of the structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of this utility model from another perspective;

[0020] Figure 5 This is a schematic diagram of the rear structure of this utility model;

[0021] Figure 6 This is a schematic diagram of the manual rotation component structure of this utility model;

[0022] Figure 7 This is a schematic diagram of the grinding wheel structure of this utility model;

[0023] Figure 8 This is a front cross-sectional view of the second lower sieve plate of this utility model.

[0024] Figure 9 yes Figure 1 A schematic diagram of the structure at point A in the middle.

[0025] In the diagram: 1. Box body; 201. Exhaust pipe; 202. Discharge pipe; 203. Material collection duct; 204. Connecting pipe; 205. Exhaust fan; 206. Discharge pipe; 207. Split stop plate; 2071. Trapezoidal sealing plate; 208. Groove; 2081. Moving table; 209. Rack; 210. Cylindrical gear; 211. Rod handwheel; 212. Blower; 213. First guide plate; 301. Inclined box; 302. First upper screen plate; 303. Vibration motor; 304. 305. First spring; 306. First receiving box; 307. Material gate; 308. Second guide plate; 409. Trapezoidal grate; 4010. Inclined rolling plate; 4001. Rotating shaft; 4021. Belt; 4002. Grinding wheel; 401. Driven bevel helical gear; 4022. Driven bevel helical gear; 403. Dual-shaft motor; 404. Cam; 405. Screening box; 406. Second spring; 410. Second lower screen plate; 411. Coupling; 412. Recessed platform; 413. Storage box. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first", "second", and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Reference Figure 1-9One embodiment of this utility model is a circulating air screening machine for wheat seeds, including a housing 1, a feeding air screening mechanism on the housing 1, a primary screening mechanism below the feeding air screening mechanism, and a final screening and grinding mechanism below the primary screening mechanism.

[0030] In this embodiment: the feeding air screen mechanism includes an exhaust pipe 201 fixedly installed on the housing 1, a discharge pipe 202 fixedly installed on the exhaust pipe 201, a material collecting duct 203 fixedly installed on the discharge pipe 202, a connecting pipe 204 fixedly installed above the material collecting duct 203, an exhaust fan 205 fixedly installed at one end of the connecting pipe 204, a discharge pipe 206 fixedly installed above the housing 1, a groove 208 fixedly installed longitudinally on the inner side of the housing 1, a moving platform 2081 slidably installed in the groove 208, a rack 209 fixedly installed above the moving platform 2081, a manual rotation component meshing on one side of the rack 209, a blower 212 fixedly installed below the exhaust pipe 201, a first guide plate 213 fixedly installed between the exhaust pipe 201 and the blower 212, and a sealing and stopping component fixedly installed on the moving platform 2081. The manual rotation component includes a cylindrical gear 210 rotatably mounted on one side of the rack 209, with a lever handwheel 211 fixedly mounted on the cylindrical gear 210. The lever handwheel 211 is rotatably connected to the housing 1. An arc-shaped material receiving baffle is rotatably mounted on the outer surface of the material collecting duct 203. A dust collection screen is installed inside the material collecting duct 203, and the dust collection screen is removed and cleaned by means of the arc-shaped material receiving baffle. Both the blower 212 and the exhaust fan 205 are existing technologies. The blower 212 mainly consists of the following components: a motor, an air filter, a blower body, an air chamber, a base (which also serves as an oil tank), and an oil drip nozzle. The blower 212 operates eccentrically by an offset rotor inside the cylinder, and the volume change between the blades in the rotor slots draws in, compresses, and expels air. During operation, the pressure difference of the blower 212 automatically delivers lubricant to the oil drip nozzle, dripping into the cylinder to reduce friction and noise, while also preventing backflow of gas inside the cylinder. Blower 212 is a 4-68 type blower, model NO2.8-5. Exhaust fan 205 is a 9-19 centrifugal fan, consisting of a motor, fan blades, casing, air inlet and outlet, and external control device. During normal operation, exhaust fan 205 uses mechanical energy to drive the fan, rapidly expelling stagnant hot air, odors, and small particles from the chamber in the shortest possible time. Simultaneously, it circulates fresh air from outside the chamber with the indoor air, thereby achieving ventilation, cooling, and improving the air environment inside the chamber. The sealing and stopping assembly includes a split stop plate 207 fixedly installed on the moving platform 2081, with trapezoidal sealing plates 2071 fixedly installed on opposite sides of the split stop plate 207.

[0031] In this embodiment: the primary screening mechanism includes an inclined box 301 movably disposed inside the housing 1. A first upper screen plate 302 is fixedly installed inside the inclined box 301. A vibration motor 303 is fixedly installed on the inclined box 301. A first spring 304 is fixedly installed below the inclined box 301. A second guide plate 307 is fixedly installed at the discharge end of the inclined box 301. A primary screening receiving assembly is fixedly installed below the second guide plate 307. The primary screening receiving assembly includes a first receiving box 305 fixedly installed below the second guide plate 307. A material receiving gate 306 is rotatably installed on the first receiving box 305. The first receiving box 305 is fixedly connected to the housing 1.

[0032] In this embodiment: the final screening and grinding mechanism includes a trapezoidal grate 401 fixedly disposed below the primary screening mechanism. Two sets of rotating shafts 402 are vertically and parallelly rotatably mounted on the trapezoidal grate 401. A belt 4021 is rotatably mounted on the outer surface of one end of each set of rotating shafts 402. A grinding wheel 403 is fixedly mounted on the other end of each set of rotating shafts 402. A driven bevel helical gear 404 is fixedly mounted on one end of the rotating shaft 402. A driving bevel helical gear 405 is meshed on one side of the driven bevel helical gear 404. A dual-shaft motor 406 is fixedly mounted on the side wall of the housing 1. One end of the dual-shaft motor 406 is fixedly mounted to the active bevel gear 405, and the other end of the dual-shaft motor 406 is fixedly mounted to a cam 407. A screening box 408 is fixedly mounted on one side of the housing 1. A coupling 4101 is fixedly mounted on the screening box 408. A second lower screen plate 410 is rotatably mounted on the outer surface of the coupling 4101. A second spring 409 is fixedly installed between the second lower screen plate 410 and the screening box 408. A recess 411 is fixedly mounted on the second lower screen plate 410. A storage box 412 is slidably mounted inside the screening box 408. An inclined roller plate 4011 is fixedly mounted below the trapezoidal grate 401, and the inclined roller plate 4011 is rotatably connected to the rotating shaft 402. The inclined roller plate 4011 is fixedly connected to the housing 1. A pulley is provided between the rotating shaft 402 and the belt 4021. An active bevel helical gear 405 is fixedly mounted on one end of a rotating rod, and the other end of the rotating rod is fixedly mounted on the power output end of a dual-shaft motor 406. The rotating rod is rotatably connected to the housing 1. Grinding wheels 403 are fixedly mounted on the other ends of both sets of rotating shafts 402 to grind and separate small, lightweight impurities from wheat seeds. An impurity collection box is fixedly mounted on the screening box 408.

[0033] Working principle: In use, wheat seeds are first added into the housing 1 through the feeding pipe 206. Simultaneously, the feeding amount is controlled by the sealing and stopping assembly. The wheat seeds fall onto the split stopping plate 207. The rotating handwheel 211 drives the cylindrical gear 210 to rotate, moving the meshing rack 209 below. This, in turn, causes the moving table 2081 and the sealing and stopping assembly to open and close, controlling the feeding amount of wheat seeds. The blower 212 is then activated to blow up the wheat husks and small particles from the wheat entering the housing 1. Simultaneously, the exhaust fan 205 is activated, and through the exhaust pipe 201, it extracts wheat silk and small, light impurities from the wheat falling onto the first guide plate 213 and directs them into the collection duct 203. The vibration motor 303 is activated, and intact wheat seeds fall through the first guide plate 213 into the first upper sieve plate 302 in the inclined box 301. The vibration motor 303, in conjunction with the first spring 304, screens the wheat seeds. The wheat seeds screened by the first upper sieve plate 302 then fall through the second guide plate 307 into… The first receiving box 305 opens the material dispensing door 306 to dispense material, enabling dynamic screening of wheat seeds and making the screening more efficient. The dual-shaft motor 406 is started, driving the active bevel helical gear 405 to rotate and mesh with the driven bevel helical gear 404. This, in turn, drives the rotating shaft 402 via the belt 4021, simultaneously driving the grinding wheel 403 to grind the wheat silk and other particles from the screened wheat seeds. The ground material is then screened through the trapezoidal grate 401 and falls onto the inclined roller plate 4011 before entering the next... In the second lower sieve plate 410, when the dual-shaft motor 406 drives the cam 407 to rotate, the second lower sieve plate 410 is vibrated by the interaction of the concave platform 411 and the second spring 409. The wheat seeds on the second lower sieve plate 410 in the screening box 408 are finally screened. The screened whole wheat seeds fall into the storage box 412, while the impurities screened on the second lower sieve plate 410 fall into the impurity box. This completes the circulating air screening of wheat seeds, ensuring the screening effect and enabling dynamic screening of wheat seeds, making the screening more efficient.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A circulating air screening machine for wheat seeds, characterized in that: Includes a housing (1), on which a feeding air screen mechanism is provided, a primary screening mechanism is provided below the feeding air screen mechanism, and a final screening and grinding mechanism is provided below the primary screening mechanism. The final screening and grinding mechanism includes a trapezoidal grate (401) fixedly disposed below the primary screening mechanism. Two sets of rotating shafts (402) are vertically and parallelly mounted on the trapezoidal grate (401). A belt (4021) is rotatably mounted on the outer surface of one end of each set of rotating shafts (402). A grinding wheel (403) is fixedly mounted on the other end of each set of rotating shafts (402). A driven bevel helical gear (404) is fixedly mounted on one end of each rotating shaft (402). A driving bevel helical gear (405) is meshed on one side of the driven bevel helical gear (404). A dual-shaft motor (406) is fixedly mounted on the side wall of the housing (1). 06) One end is fixedly installed with the active bevel gear (405), and the other end of the dual-shaft motor (406) is fixedly installed with a cam (407). A screening box (408) is fixedly installed on one side of the housing (1). A coupling (4101) is fixedly installed on the screening box (408). A second lower screen plate (410) is rotatably installed on the outer surface of the coupling (4101). A second spring (409) is fixedly provided between the second lower screen plate (410) and the screening box (408). A recess (411) is fixedly installed on the second lower screen plate (410). A storage box (412) is slidably installed inside the screening box (408).

2. The circulating air screening machine for wheat seeds according to claim 1, characterized in that: The primary screening mechanism includes an inclined box (301) that is movably disposed inside the box (1). A first upper screen plate (302) is fixedly installed inside the inclined box (301). A vibration motor (303) is fixedly installed on the inclined box (301). A first spring (304) is fixedly installed below the inclined box (301). A second guide plate (307) is fixedly installed at the discharge end of the inclined box (301). A primary screening receiving assembly is fixedly installed below the second guide plate (307).

3. The circulating air screening machine for wheat seeds according to claim 1, characterized in that: The feeding air screen mechanism includes an exhaust pipe (201) fixedly installed on the housing (1), a discharge pipe (202) fixedly installed on the exhaust pipe (201), a material collecting duct (203) fixedly installed on the discharge pipe (202), a connecting pipe (204) fixedly installed above the material collecting duct (203), an exhaust fan (205) fixedly installed at one end of the connecting pipe (204), a discharge pipe (206) fixedly installed above the housing (1), and a longitudinally fixed section inside the housing (1). A groove (208) is provided, and a movable stage (2081) is slidably installed in the groove (208). A rack (209) is fixedly installed above the movable stage (2081). A manual rotation component is engaged on one side of the rack (209). A blower (212) is fixedly installed below the exhaust pipe (201). A first guide plate (213) is fixedly installed between the exhaust pipe (201) and the blower (212). A sealing and stopping component is fixedly installed on the movable stage (2081).

4. The circulating air screening machine for wheat seeds according to claim 1, characterized in that: A slanted rolling plate (4011) is fixedly installed below the trapezoidal grate (401), and the slanted rolling plate (4011) is rotatably connected to the rotating shaft (402).

5. A circulating air screening machine for wheat seeds according to claim 2, characterized in that: The primary screening receiving assembly includes a first receiving box (305) fixedly installed below the second guide plate (307), and a material receiving door (306) is rotatably installed on the first receiving box (305).

6. A circulating air screening machine for wheat seeds according to claim 3, characterized in that: The manual rotation assembly includes a cylindrical gear (210) rotatably mounted on one side of the rack (209), and a lever handwheel (211) is fixedly mounted on the cylindrical gear (210). The lever handwheel (211) is rotatably connected to the housing (1).

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