A grain impurity air classifier

Abstract

The utility model relates to a kind of grain impurity air separator, belong to grain detection technical field, including the air suction collecting pipe, impurity unloader, impurity suction pipe and air separator shell connected in turn, air separator shell is provided with grain discharge port and grain unloading port, the grain discharge port is through with grain unloading port, air inlet is equipped between the grain discharge port and grain unloading port.The utility model device is connected in turn by optimization design, and air suction collecting pipe, impurity unloader, impurity suction pipe and air separator shell form an efficient air separation system.Grain enters air separator shell by grain discharge port, due to the setting of air inlet, so that airflow can be uniformly applied to grain, effectively separate impurities.Outlet is set in the just above of grain unloading port, further improve the air separation effect, ensure that grain is fully air separation treatment before unloading.

Description

Technical Field

[0001] This utility model belongs to the field of grain detection technology, specifically relating to a grain impurity air separator. Background Technology

[0002] Impurity removal is a crucial step in grain processing. Traditional methods for removing grain impurities primarily rely on gravity separation and manual screening. These methods are not only inefficient but also ineffective at removing fine impurities, easily leading to inaccurate grain quality testing data. Furthermore, traditional methods typically require extensive manual labor, resulting in high labor intensity and production costs, making them unsuitable for the demands of modern large-scale production. Utility Model Content

[0003] The purpose of this application is to overcome the shortcomings of existing unloading devices, such as large impact force, low control precision, poor filtration efficiency, and high maintenance costs, and to provide a high-precision, low-damage, and long-life dedicated unloading device for grain quality inspection.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A grain impurity air separator includes an air separator housing, on which a grain inlet and a grain outlet are provided, the grain inlet and the grain outlet are connected, and an air inlet is provided between the grain inlet and the grain outlet.

[0006] Furthermore, an air outlet is provided above the air separator housing, the air outlet is connected to the impurity suction pipe, and the air outlet is located directly above the grain discharge port.

[0007] Furthermore, a baffle is provided at the air inlet, and the baffle is inclined toward the grain discharge port.

[0008] Furthermore, the baffle is hinged to the air separator housing, and the air separator housing is provided with an adjustment component, which is used to drive the baffle to rotate. The angle between the baffle and the vertical plane at the grain discharge port is adjustable from 0 degrees to 90 degrees.

[0009] Furthermore, a suction switch solenoid valve is provided between the suction manifold and the impurity unloader.

[0010] Furthermore, the impurity unloader includes an unloader body and an unloader plate. The unloader plate is hinged to the unloader body via a hinge shaft and can rotate around the hinge shaft to open and close the unloader outlet for unloading impurities.

[0011] Furthermore, the grain discharge port is a conical hopper or a pyramidal hopper, and the outlet of the grain discharge port is located above the air inlet.

[0012] Furthermore, the housing of the air separator is made of stainless steel.

[0013] Furthermore, it also includes a suction manifold, an impurity unloader, and an impurity suction pipe connected in sequence. The suction manifold is used to connect to a negative pressure fan or a negative pressure pipeline, and the impurity unloader is used to collect light impurities.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This invention provides a grain impurity air separator. Through optimized design, the device sequentially connects the air intake pipe, impurity discharger, impurity suction pipe, and air separator housing to form a highly efficient air separation system. After the grain enters the air separator housing through the grain discharge port, the airflow is evenly distributed across the grain due to the placement of the air inlet, effectively separating impurities. The air outlet is located directly above the grain discharge port, further enhancing the air separation effect and ensuring that the grain undergoes sufficient air separation treatment before discharge. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the device structure in this application;

[0017] Figure 2 This is a schematic diagram of the air separator housing structure of this application;

[0018] Figure 3 This is a top view of the air separator housing structure of this application.

[0019] In the diagram: 407, impurity unloader; 408, impurity suction pipe; 491, air separator housing; 492, air inlet; 493, grain discharge port; 494, grain discharge port; 495, air outlet; 496, baffle; 497, regulating component; 802, suction manifold; 803, suction switch solenoid valve. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0021] like Figures 1 to 3As shown, this utility model provides an embodiment of a grain impurity air separator, comprising a suction collecting pipe 802, an impurity unloader 407, an impurity suction pipe 408, and an air separator housing 491 connected in sequence. The air separator housing 491 has an air outlet 495 at the top, a grain discharge port 494 above it, and a grain discharge port 493 below it. The grain discharge port 494 is a conical hopper, with its outlet located above the air inlet 492 and communicating with the grain discharge port 493. The air inlet 492 is located on the side wall of the housing between the grain discharge port 494 and the grain discharge port 493, and is used to introduce external airflow. The suction collecting pipe 802 is connected to the impurity unloader 407 via a suction switch solenoid valve 803. One end of the impurity suction pipe 408 is connected to the air outlet 495, and the other end is connected to an external negative pressure device (suction collecting pipe), forming a closed airflow circulation.

[0022] The air separator housing 491 is welded from 304 stainless steel, with an internal rectangular cavity measuring 800mm in height and 400mm in width. An inclined baffle 496 is installed at the air inlet 492, connected to the side wall of the housing via a hinge. The initial inclination angle is 60° (towards the grain discharge port 493). The angle between the baffle 496 and the vertical plane of the grain discharge port 493 is adjustable from 0° to 90°, and the inclination angle can be adjusted within this range using an adjustment component 497. The adjustment component 497 includes a screw and a nut. Rotating the screw pushes the baffle 496 to rotate around the hinge axis, controlling the effective cross-sectional area of ​​the air inlet and adjusting the wind speed range from 5 to 15 m / s. The adjustment component 497 includes a bracket fixed to the outside of the air separator housing 491, an adjustment rod connected to the baffle 496, and a handwheel. When the handwheel is turned, the adjusting rod moves along the thread, causing the baffle 496 to rotate around the hinge axis. The angle scale is marked in 10° intervals, which makes it easy for the operator to accurately control the air intake.

[0023] The air outlet 495 is a circular opening with a diameter of 150mm, located 200mm directly above the grain discharge port 493, and is sealed to the impurity suction pipe 408 via a flange.

[0024] The baffle 496 is hinged to the air separator housing 491. An adjustment component 497 is provided on the air separator housing 491. The adjustment component 497 is used to drive the baffle 496 to rotate. The angle between the baffle 496 and the air separator housing 491 is adjustable from 90 degrees to 180 degrees.

[0025] A suction switch solenoid valve 803 is installed between the suction manifold 802 and the impurity unloader 407. The suction switch solenoid valve 803 is a normally open solenoid valve, installed between the suction manifold 802 and the impurity unloader 407. When impurities accumulate to a set amount, the suction switch solenoid valve is closed, and the impurities fall under the action of gravity. When unloading or sealing is not required, negative pressure control is applied to the unloader, and the unloading plate seals the outlet of the unloader under the action of negative pressure.

[0026] The impurity unloader 407 has a funnel-shaped shell. An unloading plate is provided at the outlet of the impurity unloader 407. The unloading plate is connected to the shell through a hinge shaft. The impurity unloader is under negative pressure control. When the impurities accumulate to a set amount, the suction switch solenoid valve is closed, and the impurities fall under the action of gravity. When unloading or sealing is not required, negative pressure control is applied to the unloader, and the unloading plate seals the outlet of the unloader under the action of negative pressure.

[0027] The grain discharge port 494 is a conical hopper or a pyramidal hopper, and the outlet of the grain discharge port 494 is located above the air inlet 492.

[0028] The housing 491 of the air separator is made of stainless steel.

[0029] During operation, grains enter from above into the conical grain discharge port 494 and fall evenly. An external fan generates negative pressure through the suction collection pipe 802, and the airflow enters the air separator housing 491 horizontally from the air inlet 492. Light impurities (such as chaff and debris) are carried by the airflow to the air outlet 495 and enter the impurity discharger 407 for temporary storage through the impurity suction pipe 408. Full grains fall into the grain discharge port 493 due to gravity as they pass through the airflow, completing the sorting. When the impurities in the impurity discharger 407 reach the preset amount, the suction switch solenoid valve 803 closes, and the impurities fall under the action of gravity. At the same time, the discharge plate opens to discharge the impurities.

[0030] Of course, the above embodiments are not intended to limit the present invention, and the present invention is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A grain impurity air separator, comprising an air separator housing (491), characterized in that: The air separator housing (491) is provided with a grain feeding port (494) and a grain unloading port (493), the grain feeding port (494) and the grain unloading port (493) are connected, and an air inlet (492) is provided between the grain feeding port (494) and the grain unloading port (493); the air inlet (492) is located on the side wall of the housing between the grain feeding port (494) and the grain unloading port (493) and is used to introduce external airflow; An air outlet (495) is provided above the housing (491) of the air separator. The air outlet (495) is connected to the impurity suction pipe (408). The air outlet (495) is located directly above the grain discharge port (493). A baffle (496) is provided at the air inlet (492), and the baffle (496) is inclined toward the grain discharge port (493); The baffle (496) is hinged to the air separator housing (491). An adjustment component (497) is provided on the air separator housing (491). The adjustment component (497) is used to drive the baffle (496) to rotate. The angle between the baffle (496) and the vertical plane at the grain discharge port (493) is adjustable from 0 degrees to 90 degrees. The grain discharge port (494) is a conical hopper or a pyramidal hopper, and the outlet of the grain discharge port (494) is located above the air inlet (492).

2. A grain impurity air separator according to claim 1, characterized in that: The air separator housing (491) is made of stainless steel.

3. A grain impurity air separator according to claim 1, characterized in that: It also includes a suction manifold (802), an impurity unloader (407), and an impurity suction pipe (408) connected in sequence. The suction manifold (802) is used to connect to a negative pressure fan or a negative pressure pipeline. The impurity unloader (407) is used to collect light impurities. A suction switch solenoid valve (803) is provided between the suction manifold (802) and the impurity unloader (407).

4. A grain impurity air separator according to claim 3, characterized in that: The impurity unloader (407) includes an unloader body and an unloader plate. The unloader plate is hinged to the unloader body via a hinge shaft and can rotate around the hinge shaft to open and close the unloader outlet for unloading impurities.

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