Device for automatically sampling diammonium phosphate product in finished product bin

Abstract

The utility model provides a device for automatically sampling a diammonium phosphate product in a finished product stock bin, which adopts the technical scheme that the device comprises a stock bin, a sleeve is inserted into the stock bin, a sampling ruler is arranged in the sleeve, and one end, far away from the stock bin, of the sampling ruler is fixedly connected with a driving shaft of a variable frequency motor; the end, away from the stock bin, of the sleeve is fixedly connected with a shell of the variable frequency motor, an opening is formed in the top of the end, located in the stock bin, of the sleeve, a sampling ruler feeding port is formed in the opening, and a sampling ruler discharging port is formed in the bottom of the end, away from the stock bin, of the sleeve and communicated with the top of the closed sample storage box. The device has the beneficial effects that the rotating speed of the variable frequency motor is adjusted through the mutual matching of the material level flow speed sensor and the metering controller, random sampling can be realized, and the quality condition of a product can be really reflected; a manual sampling method is not needed, and samples to be detected only need to be taken away from the closed sample storage box at regular time, so that the sampling detection efficiency is improved, and the labor intensity is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of sampler technology, and in particular relates to a device for automatic sampling of diammonium phosphate products in finished product silos. Background Technology

[0002] Diammonium phosphate (DAP), as an important fertilizer, must meet national standards and user requirements for key quality indicators such as nutrient content, moisture content, and particle size. Precise sampling techniques are essential to ensure consistent quality across batches. Significant deviations during sampling could lead to substandard products entering the market, negatively impacting crop growth. Accurate sampling techniques accurately reflect product compliance, prompting manufacturers to strictly adhere to regulations, preventing substandard materials and mislabeling of nutrient content, maintaining industry stability, and ensuring farmers purchase fertilizers that meet standards. Furthermore, manual sampling is inefficient, susceptible to subjective judgment affecting test results, and does not adhere to random sampling principles. Therefore, it is necessary to develop an automated sampling device for DAP products within finished product silos. Summary of the Invention

[0003] To address the problems of low efficiency and inability to adhere to the principle of random sampling in existing technologies, this utility model provides a device for automatic sampling of diammonium phosphate products in finished product silos. The technical solution is as follows: a silo is included, a sleeve is inserted into the silo, a sampling ruler is provided inside the sleeve, the end of the sampling ruler away from the silo is fixedly connected to the drive shaft of a variable frequency motor, the end of the sleeve away from the silo is fixedly connected to the housing of the variable frequency motor, the top of the end of the sleeve inside the silo has an opening with a sampling ruler inlet on the opening, and the bottom of the end of the sleeve away from the silo has a sampling ruler outlet, which is connected to the top of a sealed sample storage box.

[0004] In a preferred embodiment, the sleeve is arranged parallel to the outlet of the hopper.

[0005] In a preferred embodiment, the outlet of the hopper is connected to the weighing scale of the packaging machine via a hopper discharge chute.

[0006] In a preferred embodiment, a material level and flow rate sensor is provided at the bottom of one end of the sleeve located inside the hopper, and a metering controller is provided on the variable frequency motor. The material level and flow rate sensor transmits the sensed data to the metering controller, and the metering controller controls the speed of the variable frequency motor.

[0007] In a preferred embodiment, the metering controller also has a timing function, which controls the start and stop of the variable frequency motor according to a preset time.

[0008] In a preferred embodiment, the bottom outlet of the sealed sample storage box is connected to the side inlet of the weighing scale of the packaging machine via a discharge pipe.

[0009] In a preferred embodiment, both the bottom outlet of the sealed sample storage box and the side inlet of the packaging machine's weighing scale are equipped with movable gates.

[0010] In a preferred embodiment, the sealed sample storage box is provided with a sampling port gate on its side wall.

[0011] In a preferred embodiment, the sampling part of the sampling ruler has a spiral structure that rotates around a central axis, which is connected to the drive shaft of the variable frequency motor.

[0012] The beneficial effects of this utility model are:

[0013] This device adjusts the speed of the variable frequency motor through the cooperation of the material level and flow rate sensor and the metering controller, enabling random sampling and accurately reflecting the quality of the product. There is no need for manual sampling; the sample to be tested can be retrieved from the sealed sample storage box at regular intervals, improving the efficiency of sampling and testing and reducing labor intensity. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] In the diagram: 1. Hopper; 2. Sampling ruler inlet; 3. Sampling ruler; 4. Sampling ruler outlet; 5. Variable frequency motor; 6. Sealed sample storage box; 7. Discharge pipe; 8. Hopper discharge chute; 9. Packaging machine weighing scale; 10. Movable gate; 11. Material level and flow rate sensor; 12. Sampling port gate; 13. Sleeve; 14. Metering controller. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0017] Example

[0018] like Figure 1 The device shown is for automatic sampling of diammonium phosphate products in a finished product silo. It includes a silo 1, a sleeve 13 inserted into the silo 1, a sampling ruler 3 inside the sleeve 13, the end of the sampling ruler 3 away from the silo 1 being fixedly connected to the drive shaft of a variable frequency motor 5, the end of the sleeve 13 away from the silo 1 being fixedly connected to the housing of the variable frequency motor 5, the top of the end of the sleeve 13 inside the silo 1 having an opening, a sampling ruler inlet 2 on the opening, and a sampling ruler outlet 4 at the bottom of the end of the sleeve 13 away from the silo 1, the sampling ruler outlet 4 communicating with the top of a sealed sample storage box 6.

[0019] Furthermore, the sleeve 13 is arranged parallel to the outlet of the hopper 1.

[0020] Furthermore, the outlet of the hopper 1 is connected to the weighing scale 9 of the packaging machine via the hopper discharge chute 8.

[0021] Furthermore, a material level and flow rate sensor 11 is provided at the bottom of one end of the sleeve 13 located inside the hopper 1, and a metering controller 14 is provided on the variable frequency motor 5. The material level and flow rate sensor 11 transmits the sensed data to the metering controller 14, and the metering controller 14 controls the rotation speed of the variable frequency motor 5.

[0022] Furthermore, the metering controller 14 also has a timing function, which controls the start and stop of the frequency converter motor 5 according to a preset time.

[0023] Furthermore, the bottom outlet of the sealed sample storage box 6 is connected to the side inlet of the packaging machine weighing scale 9 via the discharge pipe 7.

[0024] Furthermore, the bottom outlet of the sealed sample storage box 6 and the side inlet of the packaging machine weighing scale 9 are both equipped with movable gates 10.

[0025] Furthermore, the sealed sample storage box 6 is provided with a sampling port gate 12 on its side wall.

[0026] Furthermore, the material level and flow rate sensor 11 is a Swell microwave solid flow meter, and the metering controller 14 is a Siemens S7-1200 or Mitsubishi FX5U.

[0027] Furthermore, the sampling part of the sampling ruler 3 has a spiral structure that rotates around a central axis, which is connected to the drive shaft of the variable frequency motor 5.

[0028] The above-mentioned device is used as follows: The sampling time and interval are preset on the metering controller 14. When the sampling time arrives, the material in the hopper 1 falls into the packaging machine weighing scale 9 through the hopper discharge chute 8. The variable frequency motor 5 is started, and the speed is determined by the material flow rate detected by the material level flow rate sensor 11. Most of the material falls into the packaging machine weighing scale 9, and a small part of the material gathers on the sampling ruler inlet 2. When the variable frequency motor 5 starts, the sampling ruler 3 rotates in place to transport the material horizontally to the sampling ruler discharge port 4 and fall into the sealed sample storage box 6. The staff opens the sampling port gate 12 to take away the sample, and then opens the movable gate 10 to let the excess sample fall into the packaging machine weighing scale 9 for packaging, so that no material waste occurs.

Claims

1. A device for automatic sampling of diammonium phosphate product in a finished product silo, comprising a silo (1), characterized in that, The sleeve (13) is inserted into the inside of the hopper (1). The inside of the sleeve (13) is equipped with a sampling ruler (3). The end of the sampling ruler (3) away from the hopper (1) is fixedly connected to the drive shaft of the variable frequency motor (5). The end of the sleeve (13) away from the hopper (1) is fixedly connected to the outer shell of the variable frequency motor (5). The top of the end of the sleeve (13) inside the hopper (1) is provided with an opening. The opening is provided with a sampling ruler inlet (2). The bottom of the end of the sleeve (13) away from the hopper (1) is provided with a sampling ruler discharge port (4). The sampling ruler discharge port (4) is connected to the top of the sealed sample storage box (6).

2. The device for automatic sampling of diammonium phosphate product in a finished product silo according to claim 1, characterized in that, The sleeve (13) is arranged parallel to the outlet of the hopper (1).

3. The device for automatic sampling of diammonium phosphate product in a finished product silo according to claim 1, characterized in that, The outlet of the hopper (1) is connected to the packaging machine weighing scale (9) via the hopper discharge chute (8).

4. The device for automatic sampling of diammonium phosphate product in a finished product silo according to claim 1, characterized in that, The sleeve (13) is located inside the hopper (1) and has a material level flow rate sensor (11) at one end. The variable frequency motor (5) is equipped with a metering controller (14). The material level flow rate sensor (11) transmits the sensed data to the metering controller (14), and the metering controller (14) controls the rotation speed of the variable frequency motor (5).

5. The device for automatic sampling of diammonium phosphate product in a finished product silo according to claim 4, characterized in that, The metering controller (14) also has a timing function, which controls the start and stop of the variable frequency motor (5) according to a preset time.

6. The device for automatic sampling of diammonium phosphate product in a finished product silo according to claim 1, characterized in that, The bottom outlet of the sealed sample storage box (6) is connected to the side inlet of the packaging machine weighing scale (9) through the discharge pipe (7).

7. The device for automatic sampling of diammonium phosphate product in a finished product silo according to claim 6, characterized in that, The bottom outlet of the sealed sample storage box (6) and the side inlet of the packaging machine weighing scale (9) are both equipped with movable gates (10).

8. The device for automatic sampling of diammonium phosphate product in a finished product silo according to claim 1, characterized in that, The sealed sample storage box (6) is provided with a sampling port gate (12) on its side wall.

9. The device for automatic sampling of diammonium phosphate product in a finished product silo according to claim 1, characterized in that, The sampling part of the sampling ruler (3) is a spiral structure that rotates around the central axis, which is connected to the drive shaft of the variable frequency motor (5).

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