A screening machine for corn seed breeding

Abstract

The utility model relates to corn seed screening technical field especially is a kind of screening machine for corn seed breeding, including box, the upper surface of box is equipped with feed inlet, the left side intercommunication of box is equipped with two groups of discharge port, the bottom surface of box is equipped with discharge chute, two groups of sliding slots are symmetrically set up in the opposite two surfaces of box inner wall, sliding rod is set up in the sliding slot, the both ends of sliding rod circumferential surface are inserted with sliding block, the both ends of sliding rod circumferential surface are located spring on the side of sliding block and are equipped with.The utility model relates to a kind of screening machine for corn seed breeding, by the collaborative vibration of double-layer sieve plate and electric push rod, the three-level synchronous separation of " big impurity-qualified seed-small impurity" is realized.Upper sieve plate intercepts broken ear, pebble and other big impurities, lower sieve plate retains the qualified seed of full grain, avoids the problem of " mixed screening leading to qualified seed waste" or " time-consuming multiple screening" in traditional screening.

Description

Technical Field

[0001] This utility model relates to the field of corn seed screening technology, and in particular to a screening machine for corn seed breeding. Background Technology

[0002] Corn seeds are reproductive bodies capable of growing into mature corn plants. They are formed from ovules through pollination and fertilization. Corn seeds consist of three parts: seed coat, embryo, and endosperm. Corn seeds are classified into four types: conventional varieties, inbred lines, single crosses, double crosses, and triple crosses. Before storage, corn seeds need to be screened to remove impurities and moldy seeds.

[0003] However, dust inevitably accumulates inside corn seeds during production and processing. When screening the corn seeds, this dust is released into the surrounding air, polluting the environment and affecting the working conditions. Therefore, we propose a screening machine for corn seed breeding. Utility Model Content

[0004] The main objective of this invention is to provide a screening machine for corn seed breeding, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A screening machine for corn seed breeding includes a housing with a feed inlet on the upper surface and two sets of discharge outlets connected to the left side of the housing. A discharge trough is formed on the bottom surface of the housing. Two sets of sliding grooves are symmetrically formed on opposite surfaces of the inner wall of the housing. A sliding rod is installed within each groove. A slider is inserted through both ends of the sliding rod's periphery. Springs are fitted onto one side of each slider at both ends of the sliding rod's periphery. A sieve plate is provided on one side of the slider, and a discharge outlet is formed on one side of the sieve plate. A push rod is inserted through the right side of the housing, and an electric push rod is also provided on the right side of the housing. Two sets of dust collection hoods are connected to the back of the housing, and a dust pump and a filter box are respectively installed on the back of the housing.

[0007] Preferably, the two sets of dust collection hoods are connected by a connecting pipe on one side, the exhaust end of the dust collection pump is connected by an exhaust pipe, the surface of the filter box is provided with two sets of slots, the two sets of slots are provided with filter plates, and the surface of the filter box is provided with a collection box below the slots.

[0008] Preferably, the free end of the connecting pipe is fixedly connected to the suction end of the vacuum pump and communicates with the vacuum pump, and the bottom end of the exhaust pipe is fixedly connected to the upper surface of the filter box and communicates with the filter box.

[0009] By adopting the above technical solution: the filter plate uses high-efficiency filter cotton or activated carbon filter screen. The high-efficiency filter cotton can effectively capture fine dust and impurities, and the collection box is made of transparent polycarbonate plastic, which makes it easy to observe the dust accumulation and clean it in time.

[0010] Preferably, the slider and the slide rod are slidably engaged, one end of the spring is fixedly connected to one side of the slider, the free end of the spring is fixedly connected to one side of the inner wall of the slide groove, and the starting position of the discharge port is above the discharge port.

[0011] Preferably, one side of the inner wall of the slide groove is slidably engaged with the push rod, the output end of the electric push rod is fixedly connected to one side of the push rod, and the front side of the box is respectively provided with an observation window, a controller and a housing.

[0012] By adopting the above technical solutions: the slider is recommended to be made of self-lubricating bronze or polytetrafluoroethylene engineering plastic, the slide bar is made of hardened steel or chrome-plated steel, and the spring is made of high-carbon steel or stainless steel. The self-lubricating bronze or PTFE slider has a low coefficient of friction, reducing wear and making the screen plate move more smoothly, thus improving screening efficiency; the hardened steel or chrome-plated slide bar has high hardness and wear resistance, and is not easily deformed by high-frequency vibration; the high-carbon steel or stainless steel spring has stable elasticity, providing continuous elastic force to ensure effective vibration of the screen plate.

[0013] Preferably, a rotating rod is symmetrically rotatably connected above the material feeding trough inside the housing. A baffle is provided on the circumferential side of the rotating rod. One end of the rotating rod is located inside the housing. A worm gear is rotatably connected inside the housing. A worm wheel is provided at one end of the rotating rod, and the worm wheel meshes with the worm gear.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. Through the coordinated vibration of double-layer sieve plates and electric push rods, a three-stage synchronous separation of "large impurities - qualified seeds - small impurities" is achieved. The upper sieve plate intercepts large impurities such as broken ears and stones, while the lower sieve plate retains plump, qualified seeds, avoiding the problems of "mixed screening leading to waste of qualified seeds" or "time-consuming multiple screenings" in traditional screening. Qualified seeds are discharged separately from a dedicated outlet, resulting in higher purity and directly reducing seed selection costs in subsequent breeding stages, while improving corn germination rate and seedling quality.

[0016] 2. Two sets of dust suction hoods, working in conjunction with a dust pump, create negative pressure inside the chamber, effectively capturing dust particles airborne during the screening process and preventing them from spreading into the working environment and causing air pollution. Simultaneously, the high-efficiency filter plates (high-efficiency filter cotton / activated carbon filter) inside the filter chamber deeply intercept dust, ensuring that the purified air meets emission standards. The collection box facilitates observation of dust accumulation, and regular cleaning does not require disassembling the entire machine, reducing the health risks of dust inhalation for workers and simplifying equipment maintenance.

[0017] 3. The worm gear-driven baffle structure allows for flexible control of the opening and closing degree of the feeding chute and the feeding speed. During the initial screening stage, the baffle can be closed to prevent small impurities from prematurely discharging and mixing with qualified seeds. In the later stages of screening, the baffle is slowly opened based on the amount of impurities accumulated at the bottom, preventing concentrated discharge of impurities and subsequent blockage of the feeding chute. This design is adaptable to the screening needs of different batches of corn seeds with varying impurity content. For example, the feeding speed can be slowed down when processing seeds with high impurity levels, while the discharge speed can be accelerated when processing seeds with low impurity levels, improving the equipment's adaptability to different scenarios. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a screening machine for corn seed breeding according to the present invention;

[0019] Figure 2 This is a right view of a screening machine for corn seed breeding according to the present invention;

[0020] Figure 3 In this utility model Figure 2 Cross-sectional view of section AA;

[0021] Figure 4 An exploded view of the casing of a screening machine for corn seed breeding according to this utility model;

[0022] Figure 5 This is an exploded view of a screening machine for corn seed breeding according to the present invention;

[0023] Figure 6 This is an exploded view of the filter box of a screening machine for corn seed breeding according to this utility model.

[0024] In the diagram: 1. Box body; 101. Inlet; 10. Outlet; 102. Observation window; 103. Controller; 104. Housing; 105. Feed chute; 106. Rotating rod; 107. Baffle; 108. Worm gear; 109. Worm; 11. Slide groove; 110. Slide rod; 111. Sliding block; 112. Spring; 113. Screen plate; 114. Feed port; 115. Push rod; 116. Electric push rod; 12. Dust hood; 121. Connecting pipe; 122. Dust pump; 123. Exhaust pipe; 124. Filter box; 125. Slot; 126. Filter plate; 127. Collection box. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within 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.

[0028] Please see Figure 1-6 This utility model provides a technical solution:

[0029] A screening machine for corn seed breeding includes a housing 1. A feed inlet 101 is provided on the upper surface of the housing 1. Two sets of discharge outlets 10 are connected to the left side of the housing 1. A discharge trough 105 is provided on the bottom surface of the housing 1. Two sets of sliding grooves 11 are symmetrically provided on opposite surfaces of the inner wall of the housing 1. A sliding rod 110 is installed in each sliding groove 11. Sliding blocks 111 are inserted through both ends of the sliding rod 110's circumferential side. Springs 112 are sleeved on both ends of the sliding rod 110 near one side of the sliding block 111. A sieve plate 113 is provided on one side of the sliding block 111, and a discharge outlet is provided on one side of the sieve plate 113. 114. A push rod 115 is inserted through the right side of the box 1. An electric push rod 116 is provided on the right side of the box 1. Two sets of dust suction hoods 12 are connected to the back of the box 1. A dust suction pump 122 and a filter box 124 are respectively provided on the back of the box 1. A connecting pipe 121 is provided on one side of the two sets of dust suction hoods 12. An exhaust pipe 123 is provided at the exhaust end of the dust suction pump 122. Two sets of slots 125 are opened on the surface of the filter box 124. Filter plates 126 are provided in the two sets of slots 125. A collection box 127 is provided on the surface of the filter box 124 below the slots 125.

[0030] In this embodiment, the free end of the connecting pipe 121 is fixedly connected to the suction end of the dust pump 122 and communicates with the dust pump 122; the bottom end of the exhaust pipe 123 is fixedly connected to the upper surface of the filter box 124 and communicates with the filter box 124; the slider 111 is slidably engaged with the slide rod 110; one end of the spring 112 is fixedly connected to one side of the slider 111; the free end of the spring 112 is fixedly connected to one side of the inner wall of the slide groove 11; the starting position of the discharge port 114 is above the discharge port 10; one side of the inner wall of the slide groove 11 is slidably engaged with the push rod 115; and the electric push rod 116... The output end is fixedly connected to one side of the push rod 115. The front side of the housing 1 is provided with an observation window 102, a controller 103 and a housing 104. Inside the housing 1, a rotating rod 106 is symmetrically rotatably connected above the feed chute 105. A baffle 107 is provided on the circumference of the rotating rod 106. One end of the rotating rod 106 is located inside the housing 104. A worm gear 109 is rotatably connected inside the housing 104. A worm wheel 108 is provided at one end of the rotating rod 106. The worm wheel 108 meshes with the worm gear 109. The aperture of the upper screen plate 113 is larger than that of the lower screen plate 113.

[0031] The above method involves workers pouring corn seeds to be screened into the feed inlet 101 at the top of the housing 1. The seeds first fall onto the surface of the upper sieve plate 113. The distribution of seeds on the upper and lower sieve plates 113 can be observed in real time through the observation window 102 on the front side of the housing 1, preventing local accumulation on the upper sieve plate 113 from affecting the screening efficiency. If necessary, the subsequent vibration parameters can be adjusted through the controller 103. After the controller 103 is started, the electric push rod 116 reciprocates, and its output end drives the push rod 115 to move left and right. The push rod 115 moves synchronously. The upper and lower sets of sieve plates 113 are pushed to ensure that the grading and screening are carried out simultaneously. The sieve aperture of the upper sieve plate 113 is larger than the size of qualified corn seeds. During vibration, impurities that are too large, such as broken corn ears and stones, are intercepted on the lower sieve plate 113 and slide towards the discharge port 114 on one side with the vibration. Finally, they are discharged from a set of discharge ports 10 on the upper left side of the box body 1, completing the separation of large impurities. Seeds screened by the upper sieve plate 113, containing qualified seeds and small impurities, fall to the lower sieve plate 113, where the sieve aperture is smaller than the size of qualified corn seeds. The size of qualified corn seeds is larger than that of small impurities. During vibration, plump, qualified seeds are intercepted on the lower sieve plate 113 and slide towards the discharge port 114 on one side, and are discharged from another set of discharge ports 10 on the lower left side of the box 1, completing the collection of qualified seeds. Small impurities such as broken particles and dust that are too small pass through the gaps in the lower sieve plate 113 and fall to the bottom of the box 1, waiting to be discharged later. At the same time as screening, the dust pump 122 on the back of the box 1 is activated. There are two sets of dust hoods 12, which connect the inside of the box 1 to generate negative pressure. The dust generated during the screening process is sucked in and enters the dust pump 122 through the connecting pipe 121 connected to the dust hood 12. Then, it is transported to the filter box 124 through the exhaust pipe 123 at the exhaust end of the dust pump 122. After entering the filter box 124, the dust is intercepted by the high-efficiency filter cotton or activated carbon filter screen of the filter plate 126 in the slot 125 of the filter box 124. The purified air is discharged from the top of the filter box 124. The intercepted dust falls naturally and is collected in the collection box 127 below the filter box 124. It can be cleaned periodically.

[0032] It should be noted that the staff pours the corn seeds to be screened into the feed inlet 101 at the top of the box 1. The seeds first fall onto the surface of the upper screen plate 113. The distribution of seeds on the upper and lower screen plates 113 can be observed in real time through the observation window 102 on the front side of the box 1 to avoid local accumulation on the upper screen plate 113, which would affect the screening efficiency. If necessary, the subsequent vibration parameters can be adjusted through the controller 103. After the controller 103 is started, the electric push rod 116 reciprocates, and its output end drives the push rod 115 to move left and right. The push rod 115 simultaneously pushes the upper and lower screen plates 113 to ensure that the grading and screening are carried out synchronously. The sieve holes of the upper screen plate 113... The seeds are larger than the size of qualified corn seeds. During vibration, excessively large impurities such as broken corn ears and stones are intercepted on the lower screen plate 113 and slide towards the discharge port 114 on one side, eventually being discharged from a set of discharge ports 10 on the upper left side of the box body 1, completing the separation of large impurities. Seeds screened by the upper screen plate 113, containing qualified seeds and small impurities, fall onto the lower screen plate 113. The sieve aperture of the lower screen plate 113 is smaller than the size of qualified corn seeds but larger than the size of small impurities. During vibration, plump qualified seeds are intercepted on the lower screen plate 113 and slide towards the discharge port 114 on one side, eventually being discharged from the upper left side of the box body 1. The other set of discharge ports 10 below discharges the qualified seeds, completing the collection of seeds. Small particles, dust, and other small impurities that are too small fall through the gaps in the lower sieve plate 113 to the bottom of the box 1, waiting to be discharged later. During screening, the dust pump 122 on the back of the box 1 is activated. There are two sets of dust hoods 12, which connect to the inside of the box 1 to create negative pressure, sucking in the dust flying during the screening process. The dust enters the dust pump 122 through the connecting pipe 121 connected to the dust hood 12, and is then transported to the filter box 124 through the exhaust pipe 123 at the exhaust end of the dust pump 122. After entering the filter box 124, the dust is filtered by the filter plates 1 in the slots 125 of the filter box 124. 26. High-efficiency filter cotton or activated carbon filter screen intercepts and purifies the air, which is then discharged from the top of the filter box 124. The intercepted dust falls naturally and is collected in the collection box 127 below the filter box 124, which can be cleaned periodically. The worm gear 109 inside the housing 104 rotates, driving the worm wheel 108 meshing with it to rotate. The worm wheel 108 is fixedly connected to the rotating rod 106, which in turn drives the rotating rod 106 to rotate. The baffle 107 on the side of the rotating rod 106 rotates with the rod, opening the channel of the discharge trough 105, and the impurities at the bottom are discharged from the discharge trough 105. Rotating the worm gear 109 in the opposite direction can close the baffle 107, so that the discharge speed can be controlled.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A screening machine for corn seed propagation, comprising a housing (1), characterized in that: The upper surface of the box (1) is provided with a feed inlet (101), and two sets of discharge outlets (10) are connected to the left side of the box (1). The bottom surface of the box (1) is provided with a discharge groove (105). The inner wall of the box (1) is symmetrically provided with two sets of sliding grooves (11) on opposite surfaces. A sliding rod (110) is provided in the sliding groove (11), and a slider (111) is inserted at both ends of the circumferential side of the sliding rod (110). The two ends of the circumferential side of the sliding rod (110) are located at the slider (111). 11) A spring (112) is fitted on one side, a sieve plate (113) is provided on one side of the slider (111), a discharge port (114) is opened on one side of the sieve plate (113), a push rod (115) is inserted through the right side of the box (1), an electric push rod (116) is provided on the right side of the box (1), two sets of dust collection hoods (12) are connected to the back of the box (1), and a dust collection pump (122) and a filter box (124) are respectively provided on the back of the box (1).

2. The screening machine for maize seed propagation according to claim 1, characterized in that: The two sets of dust collection hoods (12) are connected by a connecting pipe (121) on one side, the exhaust end of the dust collection pump (122) is connected by an exhaust pipe (123), the surface of the filter box (124) is provided with two sets of slots (125), the two sets of slots (125) are provided with filter plates (126), and the surface of the filter box (124) is provided with a collection box (127) below the slots (125).

3. A screening machine for maize seed propagation according to claim 2, characterized in that: The free end of the connecting pipe (121) is fixedly connected to the suction end of the vacuum pump (122) and communicates with the vacuum pump (122). The bottom end of the exhaust pipe (123) is fixedly connected to the upper surface of the filter box (124) and communicates with the filter box (124).

4. A screening machine for maize seed propagation according to claim 1, characterized in that: The slider (111) is slidably engaged with the slide rod (110), one end of the spring (112) is fixedly connected to one side of the slider (111), the free end of the spring (112) is fixedly connected to one side of the inner wall of the slide groove (11), and the starting position of the discharge port (114) is above the discharge port (10).

5. A screening machine for maize seed propagation according to claim 1, characterized in that: The inner wall of the slide (11) is slidably engaged with the push rod (115) on one side, and the output end of the electric push rod (116) is fixedly connected to one side of the push rod (115). The front side of the box (1) is provided with an observation window (102), a controller (103) and a housing (104).

6. A screening machine for maize seed propagation according to claim 5, characterized in that: A rotating rod (106) is symmetrically rotatably connected above the feeding trough (105) inside the box (1). A baffle (107) is provided on the circumferential side of the rotating rod (106). One end of the rotating rod (106) is located inside the housing (104). A worm gear (109) is rotatably connected inside the housing (104). A worm wheel (108) is provided at one end of the rotating rod (106). The worm wheel (108) meshes with the worm gear (109).

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