Novel accurate powder feeding device of medicine soaking machine

Abstract

The utility model provides a novel accurate powder feeding device of a medicine soaking machine, and belongs to the technical field of medicine soaking machines. Comprising a powder soaking machine, a powder feeding device is arranged at the top of the powder soaking machine, the powder feeding device comprises a stock bin, and a mounting plate is arranged at the bottom of the stock bin; and a weight sensor fixedly connected with the mounting plate is arranged at the top of the medicine soaking machine. The four weight sensors are installed at the bottom of the powder feeding device, signals are transmitted to the PLC through the pressure transmitter to detect the weight, the weight of a stock bin and remaining chemicals can be obtained, the weight sensors obtain data of the remaining weight in real time in the chemical feeding process, the chemical feeding weight is judged according to the remaining weight, and therefore the chemical feeding amount is accurately controlled, and the chemical feeding efficiency is improved. A material level sensor is omitted, a cheaper fixed-frequency motor is used for driving the spiral, a variable-frequency motor is not needed, and the comprehensive cost is effectively reduced.

Description

Technical Field

[0001] The utility model provides a precise powder feeding device for a new type of medicine soaking machine, belonging to the technical field of medicine soaking machines. Background Art

[0002] The PAM medicine soaking machine is a common medicine preparation device. Its principle is mainly to add medicine powder and water into the device, and fully mix the medicine powder and water through mechanical stirring and high-speed rotation. After a series of operations, a uniform mixture is formed.

[0003] A powder feeding device is necessarily used on the medicine soaking machine. The powder feeding device mainly includes a feed bin, a feed pipe located on one side of the feed bin, a conveying auger in the feed pipe, and a fixed-frequency motor on the outer wall of the feed bin for driving the conveying auger.

[0004] Based on the above search and combined with the existing technology, it is found that currently most manufacturers control the feeding amount by programming to control the rotational speed and conveying time of the variable-frequency fixed-frequency motor for screw conveying, and rely on a rotary vane level gauge to judge whether the bin is empty to determine whether to add medicine powder to the bin. However, the method of judging the feeding amount by controlling the rotational speed of the screw conveyor will lead to inaccurate judgment of the feeding amount due to uneven feeding amount per revolution of the screw, and the rotary vane level switch will fail due to jamming of the bearing by too fine PAM powder and needs to be frequently replaced, resulting in a need to improve the comprehensive cost. Content of the Utility Model

[0005] The technical problem solved by the utility model is that the method of judging the feeding amount by controlling the rotational speed of the screw conveyor makes the judgment of the feeding amount inaccurate, the rotary vane level switch that needs to be frequently used needs to be replaced frequently, and the comprehensive cost needs to be improved.

[0006] To solve the technical problem, the technical solution provided by the utility model is: a precise powder feeding device for a new type of medicine soaking machine, including a medicine soaking machine, a powder feeding device is arranged on the top of the medicine soaking machine, the powder feeding device includes a feed bin, and a mounting plate is arranged at the bottom of the feed bin; a weight sensor fixedly connected to the mounting plate is arranged on the top of the medicine soaking machine.

[0007] Further, a feed pipe passing through the mounting plate is arranged on one side wall of the feed bin, a conveying auger placed in the feed pipe is arranged at the inner bottom of the feed bin, and a fixed-frequency motor for driving the conveying auger is arranged on the outer wall of the feed bin.

[0008] Further, a control cabinet is arranged on the medicine soaking machine, a pressure transmitter and a PLC controller are arranged in the control cabinet, and the weight sensor is electrically connected to the PLC controller through the pressure transmitter.

[0009] Further, the bottom of the mounting plate and the weight sensor are fixedly connected by bolts.

[0010] Advantages of the present utility model:

[0011] Four weight sensors are installed at the bottom of the powder dosing device. The signals are transmitted to the PLC controller through pressure transmitters to detect the weight, so that the weight of the silo + remaining chemical agent can be obtained. During the chemical dosing process, the weight sensors continuously acquire the remaining weight data, and the dosing weight is judged based on the remaining weight, thereby accurately controlling the dosing amount. The level sensor is omitted, and a cheaper fixed-frequency motor is used to drive the screw, eliminating the need for a variable-frequency motor, effectively reducing the comprehensive cost. Brief Description of the Drawings

[0012] Figure 1 It is a schematic structural diagram of the present utility model.

[0013] Figure 2 It is a schematic plan view of the present utility model.

[0014] Figure 3 It is a partial enlarged view of the present utility model.

[0015] 1. Chemical soaking machine; 2. Powder dosing device; 3. Silo; 4. Mounting plate; 5. Weight sensor; 6. Feed pipe; 7. Fixed-frequency motor; 8. Control cabinet; 9. Bolt. Detailed Embodiment

[0016] The present utility model will be further described below with reference to the drawings.

[0017] According to Figs. Figure 1 , 2 As shown in Fig. 3: The present utility model provides a novel powder precise dosing device for a chemical soaking machine, which includes a chemical soaking machine 1. A powder dosing device 2 is provided at the top of the chemical soaking machine 1. The powder dosing device 2 includes a silo 3. A mounting plate 4 is provided at the bottom of the silo 3. A weight sensor 5 fixedly connected to the mounting plate 4 is provided at the top of the chemical soaking machine 1. The bottom of the mounting plate 4 and the weight sensor 5 are fixedly connected by bolts 9. Four sets of mounting holes for the weight sensor 5 are reserved at the bottom of the mounting plate 4. The weight sensor 5 is installed at the bottom of the silo through bolts and then bolted to the top of the chemical soaking machine 1.

[0018] According to Fig. Figure 2 As shown: A feed pipe 6 passing through the mounting plate 4 is provided on one side wall of the silo 3. The feed pipe 6 is communicated with the feed inlet of the chemical soaking machine 1. A conveying auger placed in the feed pipe 6 is provided at the inner bottom of the silo 3. A fixed-frequency motor 7 for driving the conveying auger is provided on the outer wall of the silo 3. The output end of the fixed-frequency motor 7 is fixedly connected to the end of the conveying auger. Starting the fixed-frequency motor 7 drives the conveying auger to rotate, so that the powder in the silo 3 is conveyed into the feed pipe 6 and then into the chemical soaking chamber of the chemical soaking machine 1.

[0019] According to Fig. Figure 1As shown in the figure: A control cabinet 8 is provided on the medicine soaking machine 1. A pressure transmitter and a PLC controller are provided inside the control cabinet 8. The weight sensor 5 is electrically connected to the PLC controller through the pressure transmitter. The control method of the present utility model is automatically controlled by the controller. The control circuit of the controller can be realized by simple programming by those skilled in the art. The provision of power also belongs to the common knowledge in the art. And the present utility model is mainly used to protect mechanical devices, so the control method and circuit connection of the present utility model will not be explained in detail anymore.

[0020] Principle of the present utility model

[0021] Four weight sensors 5 are installed at the bottom of the powder dosing device 2. The signal is transmitted to the PLC controller through the pressure transmitter to detect the weight, and the weight of the silo 3 + the remaining medicine can be obtained. During the medicine adding process, the weight sensor 5 obtains the remaining weight data in real time, and judges the added medicine weight through the remaining weight, so as to accurately control the added medicine amount, eliminating the need for a level sensor and using a cheaper fixed-frequency motor to drive the screw, without the need for a variable-frequency motor, effectively reducing the comprehensive cost.

[0022] The above describes the present utility model and its implementation manners. Such description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present utility model, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative work without departing from the creative purpose of the present utility model, they shall fall within the protection scope of the present utility model.

Claims

1. A novel device for accurately dosing powder in a medicine brewing machine, comprising a medicine brewing machine (1), characterized in that: A powder dosing device (2) is provided on the top of the medicine brewing machine (1), and the powder dosing device (2) comprises a silo (3), and a mounting plate (4) is provided at the bottom of the silo (3); a weight sensor (5) fixedly connected to the mounting plate (4) is provided on the top of the medicine brewing machine (1).

2. A novel precise powder dosing device for medicine brewing machine according to claim 1, characterized in that: A feed pipe (6) passing through the mounting plate (4) is provided on one side wall of the silo (3); a conveying auger placed in the feed pipe (6) is provided on the bottom of the silo (3); and a fixed frequency motor (7) for driving the conveying auger is provided on the outer wall of the silo (3).

3. A novel precise powder dosing device for medicine brewing machine according to claim 1, characterized in that: The medicine brewing machine (1) is provided with a control cabinet (8), and a pressure transmitter and a PLC controller are provided in the control cabinet (8), and the weight sensor (5) is electrically connected to the PLC controller via the pressure transmitter.

4. A novel precise powder dosing device for medicine brewing machine according to claim 1, characterized in that: The bottom of the mounting plate (4) and the weight sensor (5) are fixedly connected via bolts (9).

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