Discharging device of flat-bottom floor silo

Abstract

The utility model relates to a discharging device of a flat-bottom floor silo, which comprises a silo, a scraping arm and a conveying mechanism, the lower part of the side surface of the silo is provided with a discharging port, the conveying mechanism is arranged at the bottom of the silo, the feeding end of the conveying mechanism is arranged at the center of the bottom of the silo, and the discharging end of the conveying mechanism extends to the discharging port. One end of the scraping arm is horizontally and rotationally arranged in the center of the bottom of the cylindrical silo, the scraping arm is driven by a driving device to rotate around the center of the bottom of the cylindrical silo, and a scraping mechanism is arranged on the front side of the scraping arm and can drive materials on the front side of the scraping arm to move towards the center of the cylindrical silo. According to the discharging device of the flat-bottom floor silo, the material conveying mechanism and the material scraping mechanism are arranged at the bottom of the silo and used in cooperation, it is guaranteed that all materials at the bottom of the silo are conveyed to the discharging opening, the mobility of the materials in the silo is improved, and the problems that potential safety hazards are large, cost is high and efficiency is low when the materials are discharged out of the silo are solved.

Description

A discharge device for a flat-bottomed floor silo Technical Field

[0001] This utility model belongs to the field of silo technology, and specifically relates to a discharge device for a flat-bottomed, floor-mounted silo. Background Technology

[0002] In the field of bulk material storage, flat-bottomed silos are widely used in industries such as grain and coal due to their advantages such as high space utilization and relatively low construction costs. However, existing flat-bottomed silo discharge technologies have many problems, which seriously restrict the efficiency, safety, and economy of storage operations.

[0003] Traditional unloading methods, such as manual unloading, pose significant safety hazards. During warehouse cleaning operations, the complex environment can lead to sudden material collapses, causing serious injuries such as burial and suffocation to workers. From an economic perspective, manual unloading is inefficient and costly. It requires a large workforce, is physically demanding, and involves long hours. For example, manually cleaning a large, flat-bottomed grain warehouse can take several days or even weeks, incurring substantial labor costs. Moreover, manual unloading often results in a high material residue rate, requiring additional manpower and time to remove it, further increasing costs. In contrast, while automated unloading equipment improves efficiency to some extent, current equipment on the market still has many shortcomings.

[0004] Currently common mechanical discharge equipment suffers from problems such as material accumulation and easy equipment damage. Due to the uneven distribution of materials in the silo, materials tend to accumulate in areas far from the discharge port, forming "dead material zones," which leads to poor discharge and requires frequent manual intervention for cleaning.

[0005] In summary, existing flat-bottom silo unloading technologies, whether manual or automated, suffer from significant safety hazards, high costs, and low efficiency. Therefore, there is an urgent need for a new automated unloading device to improve unloading efficiency, reduce safety risks and operating costs, and meet the needs of the modern warehousing industry for efficient, safe, and economical development. Summary of the Invention

[0006] In view of this, the purpose of this utility model is to address the shortcomings of the existing technology by providing a discharge device for a flat-bottomed, floor-mounted silo, ensuring that materials can be stably and efficiently transported to the discharge port.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A discharge device for a flat-bottomed floor silo includes a cylindrical silo, a scraper arm, and a conveying mechanism. A discharge port is provided on the lower side of the cylindrical silo. The conveying mechanism is located at the bottom of the cylindrical silo, with its inlet end located at the center of the bottom of the cylindrical silo and its outlet end extending to the discharge port. One end of the scraper arm is horizontally rotatably located at the center of the bottom of the cylindrical silo, and the scraper arm is driven by a drive device to rotate around the center of the bottom of the cylindrical silo. A scraping mechanism is provided on the front side of the scraper arm, which can drive the material on the front side of the scraper arm to move towards the center of the cylindrical silo.

[0009] To better realize this utility model, the above structure is further optimized, and the scraping mechanism is one or more combinations of a spiral pushing device, a scraper pushing device, and a bucket pushing device.

[0010] To better realize this utility model, further optimizations are made to the above structure. The spiral pushing device includes a rotating shaft and a drive motor. The rotating shaft is horizontally rotatably mounted on the scraper arm. Spiral blades are provided on the rotating shaft. The drive motor drives the rotating shaft to rotate and, through the spiral blades, moves the material on the front side of the scraper arm toward the center of the cylindrical silo.

[0011] To better realize this utility model, the above structure is further optimized. The driving device is a driving vehicle, which is located at the end of the scraper arm away from the rotation center. The driving vehicle can push the scraper arm to rotate around the bottom center of the cylindrical silo.

[0012] To better realize this utility model, the above structure is further optimized, and the scraper arm is set at the bottom center of the cylindrical silo by horizontal rotation via a vertical shaft.

[0013] To better realize this utility model, the above structure is further optimized, and the material conveying mechanism is one or more combinations of a closed screw conveyor, belt conveyor, chain conveyor, scraper conveyor, and bucket elevator.

[0014] To better realize this utility model, the above structure is further optimized, and the number of discharge ports is greater than or equal to 1.

[0015] To better realize this utility model, further optimizations are made to the above structure, and both the material conveying mechanism and the scraping mechanism are synchronously controlled by a PID controller.

[0016] Compared with the prior art, this utility model has the following advantages:

[0017] The material discharge device for the flat-bottomed floor silo provided by this utility model ensures that all the material at the bottom of the silo is transported to the discharge port by a material conveying mechanism and a scraping mechanism set at the bottom of the silo, without the need for manual cleaning, thus improving the flowability of the material in the silo. Moreover, it is more energy-efficient and has better controllability compared to pneumatic assisted discharge. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 is an isometric view of the flat-bottomed floor silo of this utility model;

[0020] Figure 2 is a partial enlarged structural diagram of A in Figure 1;

[0021] Figure 3 is a cross-sectional view of the flat-bottomed, floor-standing silo of this utility model;

[0022] Figure 4 is a partial enlarged structural diagram of B in Figure 3;

[0023] Figure 5 is a partially enlarged structural diagram of C in Figure 3;

[0024] Figure 6 is a top view of the interior of the flat-bottomed, floor-standing silo of this utility model.

[0025] In the picture:

[0026] 1-Cylindrical silo, 101-Discharge port, 2-Scraper arm, 201-Vertical shaft, 3-Conveying mechanism, 301-Infeed end, 302-Discharge end, 4-Drive device, 5-Scraper mechanism, 501-Rotating shaft, 502-Drive motor, 503-Spiral blade. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] In the description of this utility model, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] Please refer to Figures 1-6. The material discharge device of the flat-bottomed floor silo provided in this application includes a cylindrical silo 1, a scraper arm 2 and a conveying mechanism 3. A discharge port 101 is provided on the lower side of the cylindrical silo 1. When the material capacity in the silo is large, the material flows out of the silo by gravity through the discharge port 101 without the need for other auxiliary equipment. A guide plate can also be set at the discharge port 101 to adjust the opening and closing angle.

[0031] The conveying mechanism 3 is located at the bottom of the cylindrical silo 1. The conveying mechanism 3 adopts one or more combinations of a closed screw conveyor, belt conveyor, scraper conveyor, scraper conveyor, and bucket elevator to convey the material in the silo to the discharge port 101. The feed end 301 of the conveying mechanism 3 is located at the bottom center of the cylindrical silo 1, and the discharge end 302 of the conveying mechanism 3 extends to the discharge port 101. The material enters the conveying mechanism 3 from the feed end 301 and is then conveyed to the discharge end 302 and discharged from the discharge port 101.

[0032] Because when a certain amount of material flows out of the silo 1 through the discharge port 101, the material far from the discharge port 101 cannot be automatically discharged and accumulates in the silo, forming a "dead material zone," frequent manual intervention is required for cleaning. This application solves this problem by setting a scraping mechanism 5 on the scraping arm 2: one end of the scraping arm 2 is horizontally rotatably set at the bottom center of the silo 1, and the scraping arm 2 is horizontally rotatably set at the bottom center of the silo 1 via the vertical shaft 201, and the scraping arm 2 is driven by the driving device 4 to rotate around the silo. The bottom center of 1 rotates, and a scraping mechanism 5 is provided on the front side of the scraping arm 2. The scraping mechanism 5 can drive the material on the front side of the scraping arm 2 to move towards the center of the cylindrical silo 1. Under the action of the scraping mechanism 5, all the material inside the cylindrical silo 1 will be sent to the feed end 301 of the conveying mechanism 3. The scraping mechanism 5 and the conveying mechanism 3 work together to ensure that all the material at the bottom of the silo is conveyed to the discharge port 101 without manual cleaning, which improves the flowability of the material in the silo. Moreover, it is more energy-efficient and has better controllability than pneumatic assisted discharge.

[0033] The scraping mechanism 5 is one or more combinations of a spiral pushing device, a scraper pushing device, a bucket pushing device, and a bucket wheel pushing device. As shown in Figures 3, 4, and 5, a spiral pushing device is used in this embodiment. The spiral pushing device includes a rotating shaft 501 and a drive motor 502. The rotating shaft 501 is horizontally rotatably mounted on the scraping arm 2. Spiral blades 503 are provided on the rotating shaft 501. The drive motor 502 drives the rotating shaft 501 to rotate, and the spiral blades 503 drive the material on the front side of the scraping arm 2 to move towards the center of the cylindrical silo 1.

[0034] As shown in Figures 1, 2, and 6, in this embodiment, the driving device 4 is a driving vehicle, which is located at the end of the scraper arm 2 away from the rotation center. The driving vehicle pushes the scraper arm 2 to rotate around the bottom center of the cylindrical silo 1. By increasing the length of the lever arm, the torque is increased, so that the scraper arm 2 can generate greater thrust.

[0035] To improve unloading efficiency, more than one unloading port 101 is provided to assist in material discharge. Both the conveying mechanism 3 and the scraping mechanism 5 are synchronously controlled by a PID controller. During the material discharge process, the flow rate of the unloading port 101 is monitored in real time by instruments and sensors. Combined with the PID algorithm, the rotation speed of the conveying mechanism 3 and the scraping mechanism 5 is dynamically adjusted to maintain stable discharge efficiency.

[0036] During work:

[0037] During the gravity discharge stage, the material flows out of the silo by gravity through the discharge port 101. During this process, the discharge flow rate can be controlled within a preset range by setting a flow control valve to ensure a stable and efficient discharge process.

[0038] After the gravity discharge stage ends, the material in the silo cannot be discharged naturally and enters the silo cleaning auxiliary stage. At this time, the conveying mechanism 3 and the scraping mechanism 5 are put into operation. The scraping mechanism 5 collects the material and sends it to the feed end 301 of the conveying mechanism 3. After transportation, the material is finally discharged from the discharge port 101. During this process, the PID controller uses the PID algorithm to perform comprehensive calculation and analysis on the flow and pressure data of the discharge port 101 through instruments and sensors. Based on the analysis results, it automatically adjusts the drive current of the scraping mechanism 5 motor and the conveying device 3 motor, thereby dynamically adjusting the speed of the scraping mechanism 5 and the speed of the conveying device 3, further ensuring the stability of the silo discharge efficiency.

[0039] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A discharge device for a flat bottom silo, characterized in that: The device includes a cylindrical silo (1), a scraper arm (2), and a conveying mechanism (3). The lower side of the cylindrical silo (1) has a discharge port (101). The conveying mechanism (3) is located at the bottom of the cylindrical silo (1). The feed end (301) of the conveying mechanism (3) is located at the center of the bottom of the cylindrical silo (1). The discharge end (302) of the conveying mechanism (3) extends to the discharge port (101). One end of the scraper arm (2) is horizontally rotatably located at the center of the bottom of the cylindrical silo (1). The scraper arm (2) is driven by a drive device (4) to rotate around the center of the bottom of the cylindrical silo (1). A scraping mechanism (5) is provided on the front side of the scraper arm (2). The scraping mechanism (5) can drive the material on the front side of the scraper arm (2) to move towards the center of the cylindrical silo (1).

2. A flat bottom silo unloader according to claim 1, characterized in that: The scraping mechanism (5) is one or more combinations of a spiral pushing device, a scraper pushing device, and a bucket pushing device.

3. A flat bottom silo unloader as defined in claim 2 wherein: The spiral pushing device includes a rotating shaft (501) and a drive motor (502). The rotating shaft (501) is horizontally rotatably mounted on the scraper arm (2). The rotating shaft (501) is provided with spiral blades (503). The drive motor (502) drives the rotating shaft (501) to rotate and, through the spiral blades (503), drives the material on the front side of the scraper arm (2) to move toward the center of the cylindrical silo (1).

4. The discharge device for a flat-bottomed, floor-mounted silo according to claim 3, characterized in that: The driving device (4) is a driving vehicle, which is located at the end of the scraper arm (2) away from the rotation center. The driving vehicle can push the scraper arm (2) to rotate around the bottom center of the cylindrical silo (1).

5. A flat bottom silo unloader as defined in claim 4 wherein: The scraper arm (2) is horizontally rotated via a vertical shaft (201) and positioned at the bottom center of the cylindrical silo (1).

6. The discharge device for a flat-bottomed, floor-mounted silo according to claim 1, characterized in that: The material conveying mechanism (3) is one or more of the following: closed screw conveyor, belt conveyor, chain conveyor, scraper conveyor, bucket elevator.

7. The discharge device for a flat-bottomed, floor-mounted silo according to claim 1, characterized in that: The number of discharge ports (101) is greater than or equal to 1.

8. The discharge device for a flat-bottomed, floor-mounted silo according to claim 1, characterized in that: Both the material conveying mechanism (3) and the scraping mechanism (5) are synchronously controlled by a PID controller.

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