A device for automatic sampling from a bulk grain funnel

Abstract

This utility model discloses an automatic sampling device for bulk grain from a hopper, comprising a frame, a hopper, a spiral conveying mechanism, a sample receiving mechanism, and a controller. The hopper is fixed to the upper part of the frame. The spiral conveying mechanism includes a spiral conveying blade and a housing. A through hole is opened on the side of the hopper, and a feed opening is provided at the front end of the housing. A discharge port is provided at the lower rear of the housing. The front end of the housing is connected to the side of the hopper around the through hole to form a seal to prevent bulk grain from leaking out at the connection. The front end of the spiral conveying blade extends from the feed opening at the front end of the housing and enters the hopper. The sample receiving mechanism includes a rotating support, which is driven by a drive mechanism to rotate intermittently. Multiple sample receiving buckets are installed on the rotating support. The upper end of a chute is fixed to the discharge port. Each intermittent rotation of the rotating support by the drive mechanism aligns the opening of one sample receiving bucket with the lower end of the chute. This utility model effectively improves the efficiency of bulk grain sampling, reduces the labor intensity of sampling personnel, and reduces waste.

Description

Technical Field

[0001] This utility model relates to the field of manufacturing technology of particulate material sampling devices, and in particular to a device for automatically sampling from a bulk grain funnel. Background Technology

[0002] When loading and unloading granular materials such as grain, corn, and soybeans at the port, the loading and unloading grab bucket grabs the granular materials from the ship and places them into the funnel. When loading the truck, the valve at the bottom of the funnel opens and the granular materials fall into the cargo box of the truck, which facilitates fast loading and unloading, and can load the materials quantitatively and reliably, preventing the granular materials from spilling onto the ground.

[0003] To standardize the unloading management and quality monitoring of granular materials, random or timed sampling tests are required. However, due to the location of the granular materials being loaded and unloaded, it is inconvenient for staff to sample the granular materials in the loading and unloading hopper or the truck compartment, and the sampling work poses certain safety hazards. At the same time, when the sampling frequency is high, the labor intensity is also high.

[0004] On the other hand, in order to avoid insufficient sampling during manual sampling, staff usually take a certain amount more each time they sample, which results in waste of particulate material. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a device for automatically sampling from a bulk grain funnel, which effectively improves the sampling efficiency of bulk grain, reduces the labor intensity of sampling personnel, and reduces waste.

[0006] To achieve the above objectives, the technical solution of this utility model is: an automatic sampling device for bulk grain from a hopper, comprising a frame, a hopper, a spiral conveying mechanism, a sample receiving mechanism, and a controller. The hopper is fixed to the upper part of the frame. The spiral conveying mechanism includes a base, a spiral conveying blade, a motor, and a housing. The motor is mounted on the base, and the base and the frame are fixedly connected. The rear part of the spiral conveying blade is pivotally connected to the base, and the motor drives the spiral conveying blade to rotate.

[0007] A through hole is opened on the side of the funnel, a feed opening is provided at the front end of the shell, and a discharge port is provided at the bottom of the rear part of the shell. The front end of the shell is connected to the side of the funnel around the through hole and forms a seal to prevent the grain from leaking out at the connection between the front end of the shell and the side of the funnel. Most of the spiral conveying knife is inside the shell and its front end extends out from the feed opening at the front end of the shell and enters the funnel.

[0008] The sample receiving mechanism is installed in the lower middle part of the frame. The sample receiving mechanism includes a rotating support, which is driven by a drive mechanism to rotate intermittently. Multiple sample receiving buckets are installed on the rotating support.

[0009] The upper end of a chute is fixedly connected to the discharge port at the lower rear of the housing. The rotating bracket is driven by the drive mechanism to rotate intermittently once, so that the opening of a sample receiving bucket can correspond to the lower end of the chute. The controller controls the operation of the spiral conveying mechanism and the drive mechanism.

[0010] Further improvements include the base and frame being fixedly connected as one unit, with multiple movable rollers mounted on both sides of the lower end of the frame; this not only makes the structure compact but also facilitates the movement of the entire device and docking with trucks.

[0011] Preferably, the driving mechanism includes a drive motor, a reducer, and a vertical rotating shaft. The rotating bracket is horizontally arranged. The drive shaft of the drive motor is connected to the input shaft of the reducer, and the output shaft of the reducer is connected to the vertical rotating shaft. The vertical rotating shaft is fixed to the rotation center position of the rotating bracket.

[0012] Preferably, the chute includes an upper vertical section, an inclined section, and a lower vertical section. The upper end of the inclined section is connected to the lower end of the upper vertical section, and the lower end of the inclined section is connected to the upper end of the lower vertical section. The upper end of the upper vertical section is fixed to the discharge port at the lower rear of the shell, and the lower end of the lower vertical section is located above the opening of a sample receiving bucket.

[0013] Further preferably, the angle between the inclined section and the horizontal plane is 45-60°. This ensures that the material can smoothly enter the sample receiving container through the chute.

[0014] Further improvements include a transparent viewing window on the outer side of the sample receiving container and a gate valve at the bottom of the container. This facilitates observation of whether there is material in the container and allows for the discharge of sampled material when the container is rotated to the unloading position.

[0015] Preferably, the spiral conveying knife includes a rotating shaft and spiral blades fixedly connected to the rotating shaft, with the central axis of the rotating shaft being horizontally positioned. A horizontally positioned central axis of the rotating shaft facilitates accurate control of the sampling volume.

[0016] Furthermore, the front end of the rotating shaft is conical and extends into the funnel. This facilitates the rotation of the spiral conveyor blades and the removal of materials.

[0017] Preferably, the rotating support is equipped with six or eight sample collection buckets, and the opening of one sample collection bucket corresponds to the lower end of the chute every 60° or 45° rotation of the rotating support.

[0018] In a further improvement, the controller includes a PLC control system with a touch screen, through which sampling parameters are set.

[0019] Furthermore, the frame is equipped with a vehicle arrival sensor, which is connected to the controller. After the vehicle arrival sensor detects that the grain loading vehicle has arrived, it sends a signal to the controller, which then controls the spiral conveyor mechanism to perform sampling.

[0020] The controller is also equipped with a communication module, which connects to the PLC control system. Parameters and operating status settings for the PLC control system can be configured via a mobile app, facilitating control, operation, and monitoring.

[0021] This invention features a through hole on the side of the funnel, a feed opening at the front of the shell, and a discharge port at the lower rear of the shell. The front of the shell connects to the side of the funnel around the through hole, forming a seal to prevent leakage of loose grain at the connection point. The spiral conveyor blade is mostly located inside the shell, with its tip extending from the feed opening at the front of the shell into the funnel. A sampling mechanism is installed in the lower middle part of the frame. The sampling mechanism includes a rotating support, which is driven intermittently by a drive mechanism. Multiple sampling buckets are mounted on the rotating support. The upper end of a chute is fixedly connected to the discharge port at the lower rear of the shell. Each intermittent rotation of the rotating support by the drive mechanism aligns the opening of one sampling bucket with the lower end of the chute. A controller controls the spiral conveyor mechanism and the drive mechanism. Thus, when sampling is required, the controller can control the spiral conveyor mechanism to automatically sample material from the funnel and then feed it into the sampling buckets through the chute. Multiple sampling buckets can also be switched by the drive mechanism to facilitate multiple samplings and unloading the sampled material after the sampling buckets reach the discharge position. Sampling requires no manual intervention, boasts a high degree of automation, and reduces the workload for sampling personnel. By setting sampling parameters, the sampling volume can be accurately and stably controlled, avoiding waste during the sampling process. This effectively improves the efficiency of bulk grain sampling. It is suitable for scenarios such as ports and grain warehouses.

[0022] Furthermore, by integrating a mobile app with the control system, users can view real-time data and remotely start and stop equipment via a mobile app, while administrators can assign operating permissions. This remote monitoring function allows users to stay informed about equipment operation in real time, promptly address anomalies, and improve equipment operating efficiency and intelligent management.

[0023] This invention is applicable not only to sampling bulk grains, but also to sampling granular materials with the same physical properties as bulk grains, such as corn, soybeans, and mung beans. Attached Figure Description

[0024] Figure 1 This is the front view of this utility model;

[0025] Figure 2 This is the right view of this utility model;

[0026] Figure 3 yes Figure 1 Enlarged view of point A;

[0027] Figure 4 This is the front view of the sample receiving mechanism of this utility model;

[0028] Figure 5 yes Figure 4 View B. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0030] Figures 1 to 5 As shown, an automatic sampling device for bulk grain hopper includes a frame 1, a hopper 2, a spiral conveying mechanism 3, a sample receiving mechanism 4, and a controller 5. The hopper 2 is fixedly connected to the upper part of the frame 1, and a switch valve 21 is provided at the lower end of the hopper 2.

[0031] The spiral conveying mechanism 3 includes a base 31, a spiral conveying blade 32, a motor 33, and a housing 34. The motor 33 is mounted on the base 31, and the base 31 and the frame 1 are fixedly connected. The rear of the spiral conveying blade 32 is pivotally connected to the base 31. The motor 33 drives the spiral conveying blade 32 to rotate through a reduction mechanism.

[0032] A through hole 22 is opened on the side of the funnel 2 near the middle and lower part. The front end of the shell 34 is provided with a feed opening 341, and the lower rear part of the shell 34 is provided with a discharge port 342. The front end of the shell 34 is connected to the side of the funnel 2 around the through hole 22 to form a seal to prevent loose grain from leaking out at the connection between the front end of the shell 34 and the side of the funnel 2. Most of the spiral conveying knife 32 is inside the shell 34, and its front end extends out from the feed opening 341 at the front end of the shell 34 and enters the funnel 2. The distance that the spiral conveying knife 32 extends into the funnel 2 can be about 100mm to ensure sufficient contact with the material in the funnel 2 and to ensure accurate and reliable sampling.

[0033] The spiral conveying knife 32 includes a rotating shaft 321 and a spiral blade 322 fixed to the rotating shaft 321. The central axis of the rotating shaft 321 is horizontally arranged. The front end of the rotating shaft 321 is conical and extends into the funnel 2.

[0034] The sample receiving mechanism 4 is installed on the lower middle side of the frame 1. The sample receiving mechanism 4 includes a rotating bracket 41, which is driven by a driving mechanism 6 to rotate intermittently. Multiple sample receiving buckets 42 are installed on the rotating bracket 41 (six or eight sample receiving buckets 42 can be installed).

[0035] The upper end of a chute 7 is fixedly connected to the discharge port 342 at the lower rear of the housing 34. The rotating bracket 41 is driven by the drive mechanism 6 to rotate intermittently once, so that the opening of a sample receiving bucket 42 can correspond to the lower end of the chute 7.

[0036] The controller 5 controls the operation of the spiral conveyor mechanism 3 and the drive mechanism 6.

[0037] The main body of the frame 1 is U-shaped, and multiple movable rollers 11 are installed on both sides of the lower end of the frame 1. In this way, the frame 1 can move the funnel 2 to adapt to different working scenarios. As a variation, the base 31 and the frame 1 can also be fixedly connected as one unit.

[0038] The chute 7 includes an upper vertical section 71, an inclined section 72, and a lower vertical section 73. The upper end of the inclined section 72 is connected to the lower end of the upper vertical section 71, and the lower end of the inclined section 72 is connected to the upper end of the lower vertical section 73. The upper end of the upper vertical section 71 is fixed to the discharge port 342 at the rear of the housing 34, and the lower end of the lower vertical section 73 is located above the opening of a sample receiving bucket 42.

[0039] The angle between the inclined section 72 and the horizontal plane is preferably 45-60°. The inclination of the inclined section 72 of the chute 7 can be matched with the particle size of the material to ensure that the material can flow smoothly into the sample receiving container 42.

[0040] The outer side of the sample receiving container 42 is provided with a transparent viewing window 421 to observe whether there is material being received; the lower part of the sample receiving container 42 is provided with a gate valve 422, which can be a manual gate valve or an electric gate valve. The gate valve 422 is used to discharge the sampled material when the sample receiving container 42 is rotated to the unloading position.

[0041] The rotating bracket 41 is equipped with six sample collection containers 42. Every 60° rotation of the rotating bracket 41 switches the opening of one sample collection container 42 to correspond to the lower end of the chute 7. Depending on the position, eight sample collection containers 42 can also be installed. When eight sample collection containers 42 are installed, every 45° rotation of the rotating bracket 41 switches the opening of one sample collection container 42 to correspond to the lower end of the chute 7.

[0042] The driving mechanism 6 includes a drive motor 61, a reducer 62, and a vertical rotating shaft 63. The rotating bracket 41 is horizontally arranged. The drive shaft of the drive motor 61 is connected to the input shaft of the reducer 62, and the output shaft of the reducer 62 is connected to the vertical rotating shaft 63. The vertical rotating shaft 63 is fixed to the rotation center position of the rotating bracket 41.

[0043] The controller 5 includes a PLC control system with a touch screen, through which sampling parameters are set.

[0044] The frame 1 is equipped with a vehicle arrival sensor 12, which is connected to the controller 5. After the vehicle arrival sensor 12 senses that the grain loading vehicle has arrived, it sends a signal to the controller 5, and the controller 5 controls the spiral conveyor mechanism 3 to perform sampling.

[0045] The controller 5 is also equipped with a communication module, which connects to the PLC control system. Parameters and operational settings for the PLC control system can be configured via a mobile app connected to the communication module. Sampling time, interval time, and number of samples can be set via the PLC's touchscreen. Parameter settings can be flexibly adjusted according to different material types and sampling requirements to meet diverse sampling needs.

[0046] The mobile app can communicate with the PLC control system in real time using the WebSocket protocol. The interface can display vehicle location, equipment operating status, and sample volume bar charts, etc.

[0047] In this embodiment, when the vehicle arrival sensor 12 senses that the grain loading vehicle has arrived, it sends a signal to the controller 5. The controller 5 controls the spiral conveyor mechanism 3 to automatically sample according to the preset sampling time without manual intervention. The material is taken out and flows into the corresponding sampling bucket 42 through the chute 7. After sampling is completed, the controller 5 starts the drive mechanism 6 to drive the rotating bracket 41 to rotate to a position, and switches to another empty sampling bucket 42 corresponding to the lower end of the chute 7 to prepare for the second sampling. This process is repeated. When the sampling bucket 42 containing the sampled material rotates to the unloading position, the sampled material can be unloaded through the gate valve 422.

[0048] By connecting to the PLC control system via a mobile app, real-time communication can be achieved, allowing for flexible adjustment of parameter settings and monitoring of equipment operation.

[0049] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A device for automatically sampling from a bulk grain funnel, comprising a frame, a funnel, a spiral conveying mechanism, a sample receiving mechanism, and a controller, wherein the funnel is fixed to the upper part of the frame, characterized in that: The spiral conveyor mechanism includes a base, a spiral conveyor blade, a motor, and a housing. The motor is mounted on the base, and the base and the frame are fixedly connected. The rear of the spiral conveyor blade is pivotally connected to the base, and the motor drives the spiral conveyor blade to rotate. A through hole is opened on the side of the funnel, a feed opening is provided at the front end of the shell, and a discharge port is provided at the bottom of the rear part of the shell. The front end of the shell is connected to the side of the funnel around the through hole and forms a seal to prevent the grain from leaking out at the connection between the front end of the shell and the side of the funnel. Most of the spiral conveying knife is inside the shell and its front end extends out from the feed opening at the front end of the shell and enters the funnel. The sample receiving mechanism is installed in the lower middle part of the frame. The sample receiving mechanism includes a rotating support, which is driven by a drive mechanism to rotate intermittently. Multiple sample receiving buckets are installed on the rotating support. The upper end of a chute is fixedly connected to the discharge port at the lower rear of the housing. The rotating bracket is driven by the drive mechanism to rotate intermittently once, so that the opening of a sample receiving bucket can correspond to the lower end of the chute. The controller controls the operation of the spiral conveying mechanism and the drive mechanism.

2. The device for automatically sampling from a bulk grain funnel according to claim 1, characterized in that: The base and the frame are fixedly connected as one unit, and multiple movable rollers are installed on both sides of the lower end of the frame; The driving mechanism includes a drive motor, a reducer, and a vertical rotating shaft. The rotating bracket is horizontally positioned. The drive motor's drive shaft is connected to the reducer's input shaft, and the reducer's output shaft is connected to the vertical rotating shaft. The vertical rotating shaft is fixed to the rotation center position of the rotating bracket.

3. The device for automatically sampling from a bulk grain funnel according to claim 1, characterized in that: The chute includes an upper vertical section, an inclined section, and a lower vertical section. The upper end of the inclined section is connected to the lower end of the upper vertical section, and the lower end of the inclined section is connected to the upper end of the lower vertical section. The upper end of the upper vertical section is fixed to the discharge port at the lower rear of the shell, and the lower end of the lower vertical section is located above the opening of a sample receiving bucket.

4. The device for automatically sampling from a bulk grain funnel according to claim 3, characterized in that: The angle between the inclined section and the horizontal plane is 45-60°.

5. The device for automatically sampling from a bulk grain funnel according to claim 1, characterized in that: The outer side of the sample receiving container is provided with a transparent viewing window; the lower part of the sample receiving container is provided with a gate valve.

6. The device for automatically sampling from a bulk grain funnel according to claim 1, characterized in that: The spiral conveyor includes a rotating shaft and spiral blades fixed to the rotating shaft, with the central axis of the rotating shaft being horizontally set.

7. The device for automatically sampling from a bulk grain funnel according to claim 6, characterized in that: The front end of the rotating shaft is conical and extends into the funnel.

8. The device for automatically sampling from a bulk grain funnel according to claim 1, characterized in that: The rotating support is equipped with six or eight sample collection buckets. Every 60° or 45° rotation of the rotating support, the opening of one sample collection bucket corresponds to the lower end of the chute.

9. A device for automatically sampling from a bulk grain funnel according to any one of claims 1 to 8, characterized in that: The controller includes a PLC control system with a touch screen, through which sampling parameters are set.

10. The device for automatically sampling from a bulk grain funnel according to claim 9, characterized in that: The frame is equipped with a vehicle arrival sensor, which is connected to the controller. After the vehicle arrival sensor detects that the grain loading vehicle has arrived, it sends a signal to the controller, which then controls the spiral conveyor mechanism to perform sampling. The controller is also equipped with a communication module, which is connected to the PLC control system. The PLC control system can be set with parameters and operating status by connecting to the communication module via a mobile APP.

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