CN203127792U - Metering device for powder and particles - Google Patents

Abstract

The utility model discloses a powder metering device, which is characterized in that: a material storage tank is fixedly arranged on a frame, a vibrating motor is arranged in the material storage tank, and a feeding tube at the bottom of the material storage tank is provided with a The cylinder drives the opening and closing of the feeding valve; the weighing bucket is under the feeding pipe, the weighing bucket is suspended on the frame through the load cell, and a buffer cone is fixed in the center of the weighing bucket by a bracket. Its cone top faces upward; the feeding tube is connected to the bottom of the weighing bucket by its top mouth, and a screw-type feeder driven by a feeding motor is installed at the bottom of the feeding tube. In the feeding tube, a screw-type A frame agitator driven by a stirring motor is arranged above the feeder, and the frame agitator can rotate on a vertical plane in the feeding barrel. The utility model can be used for conveying and accurately measuring powder and granular materials.

Description

A powder metering device

technical field

The utility model relates to a powder metering device.

Background technique

In the existing technology, pneumatic conveying, screw conveying, plunger conveying, etc. are usually used for the metering of powders and granules such as cement. Pneumatic conveying uses the static pressure difference of air to convey powders and granulars in pipelines , Filiform materials, because the flow rate is related to the size and stability of the wind, so the flow rate is difficult to control; the plunger type conveying uses a connecting rod mechanism or a pneumatic hydraulic cylinder to push the connecting rod to do reciprocating linear motion. This form is not suitable for large-scale transportation. Continuous metering; screw conveying has simple structure, small size, convenient operation and management, and dust is not easy to spread out. It has a high application rate in continuous conveying, but its metering is difficult to meet the requirements of high precision.

Utility model content

The utility model aims at avoiding the disadvantages of the above-mentioned prior art, and provides a powder metering device which has good continuity and can effectively improve metering accuracy.

The utility model adopts following technical scheme for solving technical problems:

The structural features of the utility model powder metering device are:

A storage tank, the storage tank is fixedly arranged on the frame, a vibration motor is arranged in the storage tank, and a lower tube driven by an air cylinder is arranged in the lower feeding tube of the storage tank. Material valve;

A weighing hopper, the weighing hopper is received below the feeding pipe, the weighing hopper is suspended on the frame by a load cell, and a bracket is fixed in the center of the weighing hopper Buffer cone, with the top of the buffer cone facing upwards, the powder material in the feeding pipe is dropped into the weighing hopper through the umbrella-shaped surface of the buffer cone;

A feeding tube, the feeding tube is connected to the bottom of the weighing hopper with its top mouth, and a screw feeder driven by a feeding motor is arranged at the bottom of the feeding tube, and the feeding In the barrel, a frame agitator driven by a stirring motor is arranged above the screw feeder, and the frame agitator can rotate on a vertical plane in the feeding barrel.

The structural feature of the powder metering device of the utility model is also that: the storage barrel is arranged on the frame through a damping spring.

Compared with the prior art, the beneficial effects of the utility model are reflected in:

1. The utility model greatly weakens the impact force of falling materials and improves the accuracy of system weight collection;

2. The utility model uses a weighing sensor instead of a flow sensor, which has a simple structure and low cost;

3. The utility model uses the weighing sensor to obtain the collected data, and further obtains the accurate flow rate through calculation, the calculation is accurate, and the later maintenance workload is small;

Description of drawings

Fig. 1 is a structural representation of the utility model;

Labels in the figure: 1 storage barrel; 2 shock absorbing spring; 3 frame; 4 cylinder; 5 vibration motor; 6 feeding valve; 7 feeding pipe; 8 weighing sensor; 9 weighing bucket; 10 buffer cone; Stirring motor; 12 conveying motor; 13 screw feeder; 14 frame agitator; 15 conveying cylinder.

Detailed ways

Referring to Fig. 1, the structural form of the powder metering device in the present embodiment is:

The storage tank 1 is set, the storage tank 1 is fixedly arranged on the frame 3, the vibration motor 5 is arranged in the storage tank 1, and the opening and closing is driven by the cylinder 4 in the bottom feeding pipe 7 of the storage tank 1. The feeding valve 6;

A weighing bucket 9, the weighing bucket 9 is under the feeding pipe 7, the weighing bucket 9 is suspended on the frame through the load cell 8, and the center of the weighing bucket 9 is fixed with a buffer cone 10 by a bracket , the buffer cone 10 is with the top of the cone facing upwards, and the powder material in the feeding pipe 7 is dropped into the weighing bucket 9 through the umbrella-shaped surface of the buffer cone 10; the setting of the buffer cone 10 effectively reduces the falling impact of the material , can improve the measurement accuracy of the system;

A feeding tube 15, the feeding tube 15 is connected to the bottom of the weighing bucket 9 with its top mouth, the screw type feeder 13 driven by the feeding motor 12 is set at the bottom of the feeding drum 12, and the feeding motor 12 adopts Frequency conversion motor; in the delivery tube, a frame agitator 14 driven by the stirring motor 11 is arranged above the screw feeder 13, and the frame agitator 14 can rotate on a vertical plane in the delivery tube.

In a specific implementation, the storage tank 1 is arranged on the frame 3 through the damping spring 2 .

The utility model measures the transported materials by means of weighing, and specifically adopts the following methods:

Labels in the figure: 1 storage barrel; 2 shock absorbing spring; 3 frame; 4 cylinder; 5 vibration motor; 6 feeding valve; 7 feeding pipe; 8 weighing sensor; 9 weighing bucket; 10 buffer cone; Stirring motor; 12 conveying motor; 13 screw feeder; 14 frame agitator; 15 conveying cylinder.

The material to be conveyed is temporarily stored in the storage tank 1 , and the feeding into the weighing hopper 9 is controlled by the feeding valve 6 . When the weight of the weighing bucket 9 is within the allowable range, the load cell 8 transmits the weight signal to the control system for calculation within the time period T, and obtains the flow detection value of the current material discharge, and compares the flow detection value with the flow setting The fixed value is compared, and then the conveying motor 12 is controlled by frequency conversion to adjust the flow rate of the conveying material and complete the accurate measurement of the conveying material.

Claims (2)

1. A powder metering device, characterized in that: A storage tank (1), the storage tank (1) is fixedly arranged on the frame (3), a vibration motor (5) is arranged in the storage tank (1), and a vibration motor (5) is arranged in the storage tank (1). (1) The bottom feeding pipe (7) is provided with a feeding valve (6) driven to open and close by the cylinder (4); A weighing bucket (9), the weighing bucket (9) is received under the feeding pipe (7), and the weighing bucket (9) is suspended on the frame by a load cell (8) On the center of the weighing bucket (9), a buffer cone (10) is fixed by a bracket. The buffer cone (10) is with its cone top facing upward, and the powder material in the feeding pipe (7) Blanking in the weighing bucket (9) through the umbrella-shaped surface of the buffer cone (10); One feeding tube (15), described feeding tube (15) is to accept the bottom of described weighing hopper (9) with its top mouthpiece, is provided with by feeding motor at the bottom of described feeding tube (12) (12) screw feeder (13) driven, in the described feeding barrel, be positioned at the top of screw feeder (13) and be provided with frame agitator (14) driven by stirring motor (11), described The frame agitator (14) is able to rotate on a vertical plane in the feeding drum. 2. The powder metering device according to claim 1, characterized in that: the storage tank (1) is set on the frame (3) through a damping spring (2).

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