A smart bulk grain loading and unloading equipment

Abstract

This utility model belongs to the technical field of bulk grain weighing equipment, and discloses an intelligent bulk grain loading and unloading device, including a frame and a temporary storage hopper, a mobile hopper, a weighing hopper, and a collecting hopper, which are mounted on the frame from top to bottom and connected in series. The top opening of the temporary storage hopper is equipped with the output end of a feeding conveyor belt. The mobile hopper is horizontally slidably connected to the bottom flange of the temporary storage hopper. Two weighing hoppers are arranged side by side and are mounted on the frame via weighing sensors. The output port of the mobile hopper can switch between the top openings of the two weighing hoppers. The collecting hopper is located at the bottom of the frame, and its top opening can receive the discharge ports of the two weighing hoppers. Below the discharge port of the collecting hopper is a discharge conveyor belt for discharging bulk grain. This utility model of intelligent bulk grain loading and unloading equipment adds a temporary storage hopper above the two weighing hoppers to switch between continuously input bulk grain materials. It has a simple structure and high operating efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of bulk grain weighing equipment, and in particular to an intelligent bulk grain loading and unloading equipment. Background Technology

[0002] Currently, belt scales and flow meters are commonly used in the conveying and metering of bulk grains. Belt scales accumulate the material transported on a belt, providing the cumulative amount of material passing through the belt per unit time. Their advantage is that they can be installed directly under the belt conveyor, saving space. However, their disadvantages include poor accuracy, large footprint, and the limitation to horizontal or small-angle installation. Flow meters, on the other hand, use static metering for cumulative measurement, overcoming the shortcomings of belt scales such as poor accuracy, large size, and horizontal feeding. The characteristics of a flow meter are: dynamic flow, static weighing; its central weighing hopper provides static and stable metering, hopper by hopper. Currently, a flow meter uses one weighing hopper per belt conveyor. This means that material cannot be continuously discharged from the hopper, resulting in intermittent conveying, reduced efficiency, and frequent start-stop cycles of the belt conveyor, which can easily lead to malfunctions.

[0003] Patent CN118129873A discloses a continuous weighing mechanism for large-weight quantitative measurement via belt conveyor. It includes a belt conveyor, a rotary weighing base at the lower end of the conveyor, at least three independently weighing hoppers on the rotary weighing base, and a chute at the outlet of each hopper. A transfer belt conveyor is positioned below the outlet of the chute. A controller receives weighing signals from the three independent hoppers and controls the conveying speed of the belt conveyor and the rotation of the rotary weighing base accordingly. This alternating mechanism rotates empty hoppers to the lower end of the conveyor for loading material and moves fully loaded hoppers from the lower end of the conveyor to the discharge position to release material to the transfer belt conveyor, forming a continuous weighing process. While this patented technology achieves continuous material conveying, it requires a rotary weighing base and involves rotating and switching between heavy and large weighing hoppers, resulting in a complex structure, high energy consumption, and susceptibility to malfunctions.

[0004] Therefore, it is necessary to develop an intelligent bulk grain loading and unloading equipment to address the aforementioned shortcomings. Utility Model Content

[0005] The purpose of this invention is to provide an intelligent bulk grain loading and unloading device, which adds a temporary storage bin above two weighing bins to switch between continuously input bulk grain materials. It has a simple structure and high operating efficiency.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This utility model relates to an intelligent bulk grain loading and unloading equipment, comprising a frame and, from top to bottom, a temporary storage hopper, a mobile hopper, a weighing hopper, and a collecting hopper connected in series on the frame. The top opening of the temporary storage hopper is provided with the output end of a feeding conveyor belt. The mobile hopper is horizontally slidably connected to the bottom flange of the temporary storage hopper. Two weighing hoppers are arranged side-by-side, and each weighing hopper is mounted on the frame via a weighing sensor. The output port of the mobile hopper can switch between the top openings of the two weighing hoppers. The collecting hopper is located at the bottom of the frame, and its top opening can receive the discharge ports of the two weighing hoppers. A discharge conveyor belt for discharging bulk grain is located below the discharge port of the collecting hopper.

[0007] By adopting a steady-state measurement method that alternates between weighing bins A and B, high weighing accuracy can be obtained, while also avoiding the problem of high-frequency start-stop of the feeding conveyor belt.

[0008] Furthermore, it also includes a dust cover, which is fixed to the top of the frame by a bracket. The dust cover is fastened to the top opening of the temporary storage cylinder and has a notch to allow the feeding conveyor belt to pass.

[0009] Furthermore, the mobile hopper includes a hopper body, a gate valve, a U-shaped flange, a vertical connecting plate, and an actuating cylinder. The U-shaped flange is disposed on both sides of the top edge of the hopper body, and the flat flange is guided and inserted into the groove of the U-shaped flange. The two vertical connecting plates are respectively horizontally connected to the two ends of the top surface of the U-shaped flange. The actuating cylinder is installed on the outer wall of the temporary storage cylinder through the flange mounting plate at the front end, and the piston rod end of the actuating cylinder facing outward is fixedly connected to one of the vertical connecting plates. The gate valve is installed on the discharge port at the bottom of the hopper body.

[0010] Furthermore, a polytetrafluoroethylene (PTFE) pad is connected to the inner side of the U-shaped flange groove, and the flat flange guide is inserted into the groove of the PTFE pad.

[0011] The mobile hopper is directly connected to the guide by the U-shaped flange and the flat flange, which is simple in structure and can achieve relatively stable guide switching.

[0012] Furthermore, a gate valve is installed on the discharge port of the weighing hopper.

[0013] Furthermore, the bottom of the frame is provided with casters and leveling feet.

[0014] Furthermore, a ladder is provided on one side of the frame, and a platform guardrail is provided on the top of the frame.

[0015] Compared with the prior art, the beneficial technical effects of this utility model are as follows: This practical intelligent bulk grain loading and unloading equipment, by adding a movable hopper that moves back and forth relative to the temporary storage hopper, can switch the output of bulk grain to weighing bins A and B respectively, so that each weighing bin has an independent static weighing time, ensuring the accuracy of weighing.

[0016] Furthermore, the addition of a dust cover collects and prevents dust from spilling during the unloading process of the conveyor belt, protecting the working environment. The action cylinder pushes and pulls the vertical connecting plate to drive the bucket body to move reciprocally along the horizontal guide of the flat flange, allowing the bottom discharge port of the bucket body to switch to either the A or B weighing bin. The addition of a PTFE pad within the groove of the U-shaped flange reduces frictional resistance between the flat and U-shaped flanges, ensuring smooth switching. The addition of a gate valve allows the weighing bin to reach a stable state before discharge, enabling more accurate measurements by reading the load cells in a static state. The bottom wheels and leveling feet facilitate flexible positioning of the intelligent bulk grain loading and unloading equipment, and allow for easy leveling after positioning, ensuring stable operation. The ladder facilitates maintenance and repair work for operators. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the main view of the intelligent bulk grain loading and unloading equipment of this utility model; Figure 2 This is a right-side view of the intelligent bulk grain loading and unloading equipment of this utility model; Figure 3 This is a schematic diagram of the internal working principle of the intelligent bulk grain loading and unloading equipment of this utility model; Figure 4 This is a front sectional view of the connecting part of the mobile hopper in this utility model; Figure 5 This is a top view of the mobile hopper in this utility model.

[0019] Explanation of reference numerals in the attached drawings: 1. Frame; 101. Bottom wheel; 102. Leveling foot; 103. Ladder; 104. Platform railing; 105. Small support; 2. Dust cover; 3. Temporary storage hopper; 301. Flat flange; 4. Moving hopper; 401. Gate valve one; 402. U-shaped flange; 403. Vertical connecting plate; 404. Actuating cylinder; 5. Weighing hopper; 501. Gate valve two; 6. Weighing sensor; 7. Collecting hopper; 8. Feeding conveyor belt; 9. Discharge conveyor belt; 11. Electrical control box. Detailed Implementation

[0020] The core of this utility model is to provide an intelligent bulk grain loading and unloading device, which adds a temporary storage hopper above two weighing hoppers to switch between continuously input bulk grain materials. It has a simple structure and high operating efficiency.

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. 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.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "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.

[0023] Refer to the attached diagram. Figure 1 This is a schematic diagram of the main view of the intelligent bulk grain loading and unloading equipment of this utility model; Figure 2 This is a right-side view of the intelligent bulk grain loading and unloading equipment of this utility model; Figure 3 This is a schematic diagram of the internal working principle of the intelligent bulk grain loading and unloading equipment of this utility model; Figure 4 This is a front sectional view of the connecting part of the mobile hopper in this utility model; Figure 5 This is a top view of the mobile hopper in this utility model.

[0024] In one specific implementation, such as Figures 1-5 As shown, the intelligent bulk grain loading and unloading equipment of this utility model includes a frame 1 and, from top to bottom, a temporary storage cylinder 3, a moving hopper 4, a weighing hopper 5, and a collecting hopper 7, which are connected in series on the frame 1. The main body of the frame 1 is a welded steel frame structure with a covered panel. The top opening of the temporary storage cylinder 3 is provided with the output end of a feeding conveyor belt 8, which is generally inclined. The moving hopper 4 is horizontally slidably connected to the bottom flat flange 301 of the temporary storage cylinder 3 and can move back and forth to switch the output of bulk grain to the weighing hopper 5. The two weighing hoppers 5 are arranged side by side and are installed on the frame 1 through a weighing sensor 6. The output port of the moving hopper 4 can switch between the top openings of the two weighing hoppers 5. The collecting hopper 7 is located at the bottom of the frame 1 and its top opening can simultaneously receive the discharge ports of the two weighing hoppers 5. Below the discharge port of the collecting hopper 7 is a discharge conveyor belt 9 for discharging bulk grain.

[0025] The two weighing hoppers 5 are defined as weighing hopper A and weighing hopper B, respectively. The two weighing hoppers 5 can perform static weighing without feeding or discharging materials, and can achieve stable and accurate weighing accuracy, which can be stabilized within the weighing error range of 0.2%. They are independent of each other and the weighing is calculated cumulatively.

[0026] By adding a movable hopper 4 that reciprocates relative to the temporary storage hopper 3, it is possible to switch the output of bulk grain materials to weighing bins A and B respectively, so that each weighing bin 5 has its own static weighing time, thus ensuring the accuracy of weighing.

[0027] In one specific embodiment of this utility model, such as Figures 1-3 As shown, the intelligent bulk grain loading and unloading equipment of this utility model also includes a dust cover 2. The dust cover 2 is fixed on the top of the frame 1 by a bracket. The dust cover 2 is fastened to the top opening of the temporary storage cylinder 3 and has a notch for making way for the feeding conveyor belt 8.

[0028] Specifically, the top of the dust cover 2 is connected to a negative pressure air duct. During the unloading process of the feeding belt conveyor 8, the dust raised by the falling loose grain is drawn away by the dust collector through the negative pressure air duct.

[0029] By adding a dust cover 2, the dust raised when the loose grain is thrown off the conveyor belt 8 during the unloading process can be collected and prevented from spilling out, thus protecting the working environment.

[0030] In one specific embodiment of this utility model, such as Figures 1-5 As shown, the movable hopper 4 includes a hopper body, a gate valve 401, a U-shaped flange 402, a vertical connecting plate 403, and an actuating cylinder 404. The U-shaped flange 402 is located on both sides of the top edge of the hopper body, with its opening facing inwards. A flat flange 301 guides and inserts into the groove of the U-shaped flange 402. Two vertical connecting plates 403 are horizontally connected to the two ends of the top surface of the U-shaped flange 402, respectively, by welding. The actuating cylinder 404 is mounted on the outer wall of the temporary storage cylinder 3 via a flange mounting plate at its front end. The axis of the actuating cylinder 404 is horizontally positioned, and the outward-facing piston rod end of the actuating cylinder 404 is fixedly connected to a vertical connecting plate 403. The gate valve 401 is installed at the discharge port at the bottom of the hopper body.

[0031] Specifically, the actuating cylinder 404 can be any one of a pneumatic cylinder, a hydraulic cylinder, or an electric push rod. Moreover, there are two actuating cylinders 404, symmetrically arranged on both sides of the temporary storage cylinder 3.

[0032] Specifically, the three sides of the U-shaped flange 402 groove are all lined with PTFE pads, and the flat flange 301 is inserted into the groove of the PTFE pad.

[0033] The bucket body is driven to reciprocate linearly along the horizontal guide of the flat flange 301 by the push-pull of the vertical connecting plate 403 via the actuating cylinder 404, thus switching the bottom discharge port of the bucket body to the top of weighing bin A or weighing bin B. By adding a polytetrafluoroethylene pad in the groove of the U-shaped flange 402, the frictional resistance between the flat flange 301 and the U-shaped flange 402 can be reduced, making the switching action smooth.

[0034] In one specific embodiment of this utility model, such as Figure 2 and Figure 3 As shown, a gate valve 501 is installed on the discharge port of the weighing hopper 5.

[0035] Only by adding gate valve 2 501 can the weighing hopper 5 enter a stable state before discharging, and the weighing sensor 6 can read the data under static conditions, thus achieving more accurate measurement.

[0036] Obviously, the gate valve 501 can also be replaced by a flap valve. The discharge valve of the weighing hopper 5 uses a servo motor to control the reciprocating flipping motion of the discharge valve plate, realizing the rapid opening and closing of the valve. The transmission part uses a chain, sprocket, and cycloidal pin reducer to transmit the power of the servo motor to the discharge valve plate. Similar simple replacement methods all fall within the protection scope of this utility model.

[0037] In one specific embodiment of this utility model, a rotary level gauge is installed on the inner wall of the weighing silo 5 to detect whether the height of the bulk grain in the weighing silo 5 has reached a set position. The rotary level gauge is electrically connected to the electrical control box 10 of the equipment.

[0038] In one specific embodiment of this utility model, such as Figure 1 and Figure 2 As shown, the bottom of the frame 1 is provided with bottom wheels 101 and leveling feet 102.

[0039] Specifically, such as Figure 1 and Figure 2 As shown, a ladder 103 is provided on one side of the frame 1, a maintenance platform is provided on the top of the frame 1, and a platform guardrail 104 is provided around the platform.

[0040] The bottom wheels 101 and leveling feet 102 facilitate flexible positioning of the intelligent bulk grain loading and unloading equipment of this invention, and allow for easy leveling after positioning, ensuring stable operation of the equipment. The ladder 103 facilitates maintenance and repair work by operators.

[0041] In one specific embodiment of this utility model, a wireless communication module is also included, which is installed inside the electrical control box 10. The wireless communication module enables the weighing data to be transmitted via a 4G network, allowing the data to be directly and wirelessly transmitted to the office computer in the central control room for centralized management.

[0042] The operation process of this intelligent bulk grain loading and unloading equipment is as follows: First, the feeding conveyor belt 8 extends into the notch of the dust cover 2 on the top of the equipment. The dust cover 2 prevents materials from splashing everywhere due to impact and also prevents dust, making the working environment more comfortable and clean. The start button on the electrical control box 10 is pressed, the equipment starts, and the control instrument receives the start signal. The control instrument automatically executes the opening and closing action of the gate valves 501 of weighing bins A and B once each. After the unloading action is completed, the instrument automatically performs a zeroing operation on weighing bins A and B, thereby ensuring the initial accuracy of the equipment. After zeroing is completed, a command is issued to start the feeding conveyor belt 8 to feed materials into the temporary storage hopper 3. The gate valve 401 at the bottom of the temporary storage hopper 3 opens, initially feeding material into weighing bin A. Gate valve 501 at the bottom of weighing bin A remains closed. The signal from the load cell 6 is transmitted to the weighing control instrument. After precise calculation, the instrument sends a command to the actuating cylinder 404 when the set weight is reached. The actuating cylinder 404 moves the hopper 4, causing the outlet of gate valve 401 to switch to the area above weighing bin B for feeding. Gate valve 501 at the bottom of weighing bin B remains closed. The control instrument determines whether weighing bin A is stable. Once stable, the instrument obtains a reading and transmits it to the equipment controller. The equipment controller then commands the gate valve 501 of weighing bin A to open, allowing the bulk grain material to fall into the collecting hopper 7. The outlet of collecting hopper 7 then discharges the material onto the discharge conveyor 9 at the bottom of the equipment. The discharge conveyor 9 transports the bulk grain material to its designated location. The equipment operates in a cyclical manner, with weighing bins A and B operating independently to ensure consistent output. When the output of bulk grain approaches the set receiving / discharging weight, the controller will sound an alarm, prompting staff to prepare for shutdown. Once the processed volume reaches the set receiving / discharging weight, the equipment will automatically stop processing, sound an alarm, and activate the printer, which will then print a processing receipt. The controller also transmits instrument data to a computer in real-time via a wireless communication module, allowing managers to monitor the weighing and conveying status of the equipment without leaving their offices.

[0043] In summary, this utility model of intelligent bulk grain loading and unloading equipment, by adding a movable hopper 4 that reciprocates left and right relative to the temporary storage hopper 3, can switch the output of bulk grain to weighing bins A and B respectively, ensuring that each weighing bin 5 has its own static weighing time and guaranteeing weighing accuracy. Furthermore, the addition of a dust cover 2 collects and prevents the spillage of dust from the unloading process of the conveyor belt 8, protecting the working environment. The action cylinder 404 pushes and pulls the vertical connecting plate 403 to drive the hopper body to move reciprocally along the horizontal guide of the flat flange 301, enabling the bottom discharge port of the hopper body to switch to weighing bin A or above weighing bin B. The addition of a polytetrafluoroethylene (PTFE) pad within the groove of the U-shaped flange 402 reduces the frictional resistance between the flat flange 301 and the U-shaped flange 402, ensuring smooth switching. The addition of gate valve 501 ensures that the weighing hopper 5 reaches a stable state before discharge, allowing for more accurate measurement by reading the load cell 6 under static conditions. The base wheels 101 and leveling feet 102 facilitate flexible positioning of the intelligent bulk grain loading and unloading equipment, and allow for easy leveling after positioning, ensuring stable operation. The ladder 103 facilitates maintenance and repair work for operators.

[0044] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0045] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. An intelligent bulk grain handling apparatus, characterized by, The equipment includes a frame (1) and, from top to bottom, a temporary storage cylinder (3), a moving hopper (4), a weighing hopper (5), and a collecting hopper (7) connected in series on the frame (1). The top opening of the temporary storage cylinder (3) is provided with the output end of a feeding conveyor belt (8). The moving hopper (4) is horizontally slidably connected to the bottom flat flange (301) of the temporary storage cylinder (3). The two weighing hoppers (5) are arranged side by side. The weighing hoppers (5) are installed on the frame (1) through a weighing sensor (6). The output port of the moving hopper (4) can switch between the top openings of the two weighing hoppers (5). The collecting hopper (7) is located at the bottom of the frame (1) and its top opening can receive the discharge ports of the two weighing hoppers (5). Below the discharge port of the collecting hopper (7) is a discharging conveyor belt (9) for discharging bulk grain.

2. The intelligent bulk grain handling apparatus of claim 1, wherein, It also includes a dust cover (2), which is fixed on the top of the frame (1) by a bracket. The dust cover (2) is fastened to the top opening of the temporary storage cylinder (3) and has a notch to allow the feeding conveyor belt (8) to pass.

3. The intelligent bulk grain handling apparatus of claim 1, wherein, The mobile hopper (4) includes a hopper body, a gate valve (401), a U-shaped flange (402), a vertical connecting plate (403), and an actuating cylinder (404). The U-shaped flange (402) is located on both sides of the top edge of the hopper body. The flat flange (301) is guided and inserted into the groove of the U-shaped flange (402). The two vertical connecting plates (403) are respectively horizontally connected to the two ends of the top surface of the U-shaped flange (402). The actuating cylinder (404) is installed on the outer wall of the temporary storage cylinder (3) through the flange mounting plate at the front end. The piston rod end of the actuating cylinder (404) facing outward is fixedly connected to one of the vertical connecting plates (403). The gate valve (401) is installed on the discharge port at the bottom of the hopper body.

4. The intelligent bulk grain handling apparatus of claim 3, wherein, The U-shaped flange (402) is lined with a polytetrafluoroethylene (PTFE) pad inside the groove, and the flat flange (301) is guided and inserted into the groove of the PTFE pad.

5. The intelligent bulk grain handling apparatus of claim 1, wherein, The weighing silo (5) is equipped with a gate valve (501) at its discharge port.

6. The intelligent bulk grain handling apparatus of claim 1, wherein, The bottom of the frame (1) is provided with bottom wheels (101) and leveling feet (102).

7. The intelligent bulk grain handling apparatus of claim 6, wherein, A ladder (103) is provided on one side of the frame (1), and a platform guardrail (104) is provided on the top of the frame (1).

Images