A negative pressure grain and stone screening device with anti-clogging feeding mechanism

Abstract

This utility model discloses a negative pressure grain and stone screening device with anti-clogging feeding mechanism, belonging to the technical field of grain and stone screening devices. It includes a grain conveying pipe with a grain outlet at one end, the outlet being umbrella-shaped. First, the servo motor is started, causing the rotating rod connected to the output end to agitate the grain at the bottom of the inlet via a stirring rod, preventing excessive grain accumulation and blockage. Simultaneously, the grain is agitated along the bottom of the inlet, preventing excessive accumulation and blockage. Then, the negative pressure created by the vacuum machine enables grain conveying. An adjustable movable baffle blocks stones in the grain, causing them to slide down the inner wall of the conveying pipe to the stone discharge port. The stones can then be removed by the movable stone discharge baffle, completing the stone discharge. This not only achieves negative pressure conveying but also screens stones in the grain during conveying.

Description

Technical Field

[0001] This utility model relates to the technical field of grain and stone screening devices, specifically a negative pressure grain and stone screening device with anti-clogging feeding mechanism. Background Technology

[0002] The negative pressure grain stone screening device is mainly used to remove heavy impurities such as stones and gravel from grains while retaining whole grains. It removes stones by using the difference in specific gravity between grains and stones through the synergistic effect of negative pressure airflow and vibrating screening. The negative pressure intensity, vibration frequency and other parameters can be adjusted in real time to adapt to different grains.

[0003] When using the aforementioned negative pressure grain and stone screening device, a large amount of grain and stones will accumulate inside the feed inlet after a single filling. This excessive accumulation can cause blockages during feeding, resulting in a slower feeding rate at the feed inlet. Furthermore, the blocked feed inlet requires manual handling, necessitating a shutdown for operation, which affects the efficiency of the negative pressure grain and stone screening device in screening grain. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a negative pressure grain and stone screening device with anti-clogging feeding.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a negative pressure grain and stone screening device for preventing feeding blockage, comprising a grain conveying pipe, one end of which is provided with a grain outlet, the grain outlet being umbrella-shaped, the end of which is away from the grain outlet being provided with a grain inlet, the end of which is away from the grain inlet being provided with a mounting frame, and the end of which is close to the grain inlet being provided with a stone unloading port, wherein a stone unloading baffle is movably inserted into the inside of the stone unloading port.

[0006] As mentioned above, the unloading port is located at the end of the grain conveying pipe, and a discharge port is provided at the bottom of the unloading port.

[0007] As mentioned above, a movable baffle is provided at one end of the grain conveying pipe near the grain outlet.

[0008] As mentioned above, a guide pipe is connected between the grain inlet and the grain conveying pipe, and an anti-clogging frame is provided at the end of the guide pipe near the grain inlet.

[0009] As described above, a servo motor is installed on one side of the anti-blocking frame, and a rotating rod is connected to the output end of the servo motor.

[0010] As described above, the surface of the rotating rod is provided with stirring rods, and the stirring rods are evenly distributed on the surface of the rotating rod.

[0011] Compared with existing technologies, this negative pressure grain and stone screening device with anti-clogging feeding has the following advantages:

[0012] The movable baffle can be adjusted to different angles depending on the type of grain. Grain is then added to the top of the inlet, and the stirring rod rotates inside the machine via the servo motor. This prevents excessive grain accumulation and blockage. The movable baffle can also block stones in the grain, allowing them to slide to the discharge port. The stones can then be removed by the movable discharge baffle, completing the discharge of the stones and achieving rapid screening between the grain and the stones.

[0013] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the three-dimensional cross-sectional structure of this utility model;

[0016] Figure 3 This is a three-dimensional structural diagram of the grain guide tube of this utility model;

[0017] Figure 4 This is a three-dimensional cross-sectional structural diagram of the grain guide tube of this utility model.

[0018] In the diagram: 1. Grain conveying pipe; 2. Grain outlet; 3. Grain inlet; 4. Mounting frame; 5. Stone unloading port; 6. Stone unloading baffle; 7. Movable baffle; 8. Grain guide pipe; 9. Anti-blocking frame; 10. Servo motor; 11. Rotating rod; 12. Stirring rod. Detailed Implementation

[0019] 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.

[0020] like Figures 1-4As shown, this utility model provides a technical solution: a negative pressure grain and stone screening device for preventing feeding blockage, including a grain conveying pipe 1, a grain outlet 2 at one end of the grain conveying pipe 1, the grain outlet 2 being umbrella-shaped, a grain inlet 3 at the end of the grain conveying pipe 1 away from the grain outlet 2, an mounting frame 4 at the end of the grain conveying pipe 1 away from the grain inlet 3, a stone unloading port 5 at the end of the grain conveying pipe 1 near the grain inlet 3, a stone unloading baffle 6 being movably inserted inside the stone unloading port 5, the stone unloading port 5 being located at the end of the grain conveying pipe 1, and a discharge port being opened at the bottom of the stone unloading port 5.

[0021] The unloading port 6, which is opened at the bottom of the unloading port 5, allows the screened stones to be easily discharged after the unloading baffle 6 is removed from inside the unloading port 5.

[0022] like Figure 2 and Figure 4 As shown, a movable baffle 7 is provided at one end of the grain conveying pipe 1 near the grain outlet 2. A grain guide pipe 8 is connected between the grain inlet 3 and the grain conveying pipe 1. An anti-blocking frame 9 is provided at one end of the grain guide pipe 8 near the grain inlet 3. A servo motor 10 is installed on one side of the anti-blocking frame 9. A rotating rod 11 is connected to the output end of the servo motor 10.

[0023] The anti-blocking frame 9, the grain guide pipe 8, and the grain inlet 3 are connected by welding, which can prevent grain from leaking out along the gaps during filling;

[0024] Meanwhile, one end of the movable baffle 7 is equipped with an adjustment valve that runs through the grain conveying pipe 1. By adjusting the rotation of the valve, the movable baffle 7 can be adjusted inside the grain conveying pipe 1, allowing for the selection and adjustment of different types of grain before collection.

[0025] like Figure 4 As shown, a stirring rod 12 is provided on the surface of the rotating rod 11, and the stirring rod 12 is evenly distributed on the surface of the rotating rod 11.

[0026] The stirring rod 12 is shaped like a "U" and is evenly distributed on the surface of the rotating rod 11, so that the grain can be quickly stirred as the rotating rod 11 rotates, avoiding excessive accumulation and blockage.

[0027] The movable baffle 7 can be adjusted to different angles depending on the type of grain. Grain is then added to the top of the grain inlet 3, and the servo motor 10 is started during this process. The servo motor 10, once started, rotates the rotating rod 11 connected to its output end. Simultaneously, the rotating rod 11 rotates the connected stirring rod 12. This stirring rod 12, when rotating, agitates the grain at the bottom of the grain inlet 3, preventing excessive grain accumulation and blockage. This ensures the negative pressure grain and stone screening device has good anti-fouling properties during use. The blockage effect causes the grain and stones to enter the grain conveying pipe 1 along the grain guide pipe 8. At the same time, the grain moves inside the grain conveying pipe 1 under negative pressure and is discharged through the grain outlet 2 at one end of the grain conveying pipe 1, thus realizing the transportation of grain. The adjustable movable baffle 7 can block the stones in the grain, causing the stones to slide down the inner wall of the grain conveying pipe 1 to the stone discharge port 5 after being blocked. Then, the stone discharge baffle 6 can be removed to complete the discharge of stones and realize the rapid screening between grain and stones.

[0028] The process involves starting the vacuum machine at low speed, simultaneously activating the bag filter pulse dust removal system, and gradually closing the main air inlet valve and branch feed valves via PLC control. A valve connects the system to the grain conveying pipe 1, creating a stable negative pressure environment within the pipe after startup, enabling it to absorb the grain.

[0029] Working principle: First, the servo motor 10 is started, so that the rotating rod 11 connected to the output end can stir the grain at the bottom of the grain inlet 3 through the stirring rod 12 to avoid excessive grain accumulation and blockage. At the same time, the grain can be stirred along the grain at the bottom of the grain inlet 3 to avoid excessive grain accumulation and blockage. Then, the negative pressure formed by the operation of the vacuum machine can realize the conveying of grain. The adjustable movable baffle 7 can block the stones in the grain, so that the stones slide down the inner wall of the grain conveying pipe 1 to the stone discharge port 5 after being blocked. Then, the stone discharge baffle 6 can be removed to complete the discharge of stones. Not only can negative pressure conveying be realized, but also the stones in the grain can be screened during conveying.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A negative pressure grain and stone screening device with anti-clogging feeding, comprising a grain conveying pipe (1), characterized in that: One end of the grain conveying pipe (1) is provided with a grain outlet (2), which is umbrella-shaped. The end of the grain conveying pipe (1) away from the grain outlet (2) is provided with a grain inlet (3). The end of the grain conveying pipe (1) away from the grain inlet (3) is provided with an installation frame (4). The end of the grain conveying pipe (1) near the grain inlet (3) is provided with a stone unloading port (5), and a stone unloading baffle (6) is movably inserted into the inside of the stone unloading port (5).

2. The negative pressure grain and stone screening device for preventing feeding blockage according to claim 1, characterized in that: The unloading port (5) is located at the end of the grain conveying pipe (1), and the bottom end of the unloading port (5) is provided with a discharge port.

3. The negative pressure grain and stone screening device for preventing feeding blockage according to claim 1, characterized in that: A movable baffle (7) is provided at one end of the grain conveying pipe (1) near the grain outlet (2).

4. The negative pressure grain and stone screening device for preventing feeding blockage according to claim 1, characterized in that: A guide pipe (8) is connected between the grain inlet (3) and the grain conveying pipe (1), and an anti-blocking frame (9) is provided at one end of the guide pipe (8) near the grain inlet (3).

5. The negative pressure grain and stone screening device for preventing feeding blockage according to claim 4, characterized in that: A servo motor (10) is installed on one side of the anti-blocking frame (9), and a rotating rod (11) is connected to the output end of the servo motor (10).

6. The negative pressure grain and stone screening device for preventing feeding blockage according to claim 5, characterized in that: The surface of the rotating rod (11) is provided with stirring rods (12), and the stirring rods (12) are evenly distributed on the surface of the rotating rod (11).

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