CN200961036Y - Auxiliary device for unloading bulk materials in silos - Google Patents

Abstract

The utility model relates to the electric integration technology field, aiming at solving the problem of current difficulty in the process of transporting loose unpacked material, which comprises a spray cap, an electromagnetic impulse valve with high speed and high volume, an all-pass quick-opening valve, a multiloop programmable time and frequency control device, a compressed air cleaner, a dehumidifier and an air storage cushioning tank. The spray cap comprises an air door, an axle tube with a fixed block, a back-moving spring, a female screw on one end, and an external pipe with one end of a V-shaped circumference. The utility model is characterized in that the spray cap is connected with the electromagnetic impulse valve with high speed and high volume, pulse air current overcomes the resistance force of the back-moving spring to increase the current of the materials via the strong radiation air current formed between the inner wall of a stock bin and the loose unpacked material along the inner circumference surface.

Description

Auxiliary device for unloading bulk materials in silos

technical field

The utility model relates to the technical field of electromechanical integration and aims to solve the problem of poor flow caused by the conveying process of bulk materials.

Background technique

Due to the internal friction, moisture absorption and static electricity of the material during the conveying process, flow problems such as arching, blockage, tubular flow and wall sticking are likely to occur, which directly lead to the interruption of production. In order to solve these flow problems, the main methods adopted in the prior art are: 1. Apply external vibration force to the silo body: such as vibrating motors and pneumatic vibrators installed on the silo wall. 2. Directly acting on materials: such as air cannons, blowing devices, etc., the disadvantages are complex structure, difficult installation and maintenance, or high energy consumption and high cost of use; 3. Other devices: cone device, vibrating bucket, etc. The disadvantage is that the problem is single and the processing is complicated.

Contents of the invention

In order to overcome the deficiencies of the prior art, the utility model provides an auxiliary device for unloading, which can solve the deficiencies of the prior art. It is small in size, can be flexibly installed on the surface of the silo, and directly acts on the material, so the installation and maintenance are convenient. , without any damage to the silo body, and runs quietly; it can also easily determine its operating strength by adjusting the air pressure and time frequency parameters, and solve various flow problems of different bulk materials in different specifications of silos; due to the remarkable performance of the device, The energy consumption of the device is low, so the operating cost is low. At the same time, the device also realizes the first-in-first-out flow sequence of materials, can operate in a high temperature environment of 250 ° C, and can also be used on the surface of the silo body of various materials.

The technical solution adopted by the utility model to solve the technical problems is: the device consists of a nozzle, a high-speed and large-flow pulse solenoid valve, a full-pass quick-open valve, a multi-circuit programmable time-frequency controller, a compressed air filter and a dryer and a Gas storage buffer tank constitutes. The above-mentioned key component nozzle is composed of a valve, a shaft tube with a fixed block, a return spring, an internal thread at one end, and a V-shaped outer tube whose inner circumference is processed at one end. When working, when the multi-loop programmable time-frequency controller gets the signal of material level or material supply, the time-frequency controller turns on and off the compressed gas according to the preset pulse interval and width, that is, when the solenoid valve is ventilated, the valve and the outer tube A gap is generated, and the high-pressure airflow is ejected along the inner peripheral surface of the valve, and a strong radial airflow is formed between the inner wall of the silo and the material to accelerate the flow of the material. When the solenoid valve is closed, the valve is quickly returned by the return spring to cooperate with and seal the port of the jacket to prevent dust from entering the nozzle.

The utility model has ingenious conception, high efficiency and stability, strong practical applicability, low installation, maintenance and use costs, and is worthy of popularization in the fields of chemical industry, medicine, food industry and the like.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is a device configuration diagram of the present utility model.

Fig. 2 is a structural diagram of the nozzle.

Detailed ways

According to engineering experience, weld the pipe sleeve or flange at the corresponding hole position on the surface of the silo, and then install and fix the nozzle. Each nozzle is connected to a high-speed and large-flow pulse solenoid valve through a thread. The electrical interface of each solenoid valve and the multi-circuit programmable time The frequency controller is connected, the gas circuit interface of each solenoid valve is connected to the full-pass quick-opening valve, and the parallel pipelines are sequentially installed with compressed air filters, dryers, and gas storage buffer tanks, so as to realize the connection of the device. The adjustable range of the air pressure of the high-pressure gas is from 3 to 8 kilograms of force. The programmable time-frequency controller sets the pulse interval and width of the high-speed and large-flow pulse solenoid valve to be greater than 0.25 seconds to ensure the effective action of the valve. For example: the air pressure is 5 kgf, the pulse width is 0.6 seconds, and the pulse interval is 2 seconds.

The time-frequency controller adopted by the device can be operated manually or automatically, so in larger projects, it can also be controlled by networking to realize the solution to the different flow problems of bulk materials in various parts. At the same time, it can also be used to solve material flow problems encountered in chutes, square cone hoppers or bins and silos, screens, feeders and pneumatic conveying devices.

Claims (6)

1. A bulk material unloading auxiliary device is characterized in that the nozzle (5) of the device is directly connected with the high-speed and large-flow pulse solenoid valve (6), and the compressed air produced by the air compressor enters the air storage buffer tank (12), After being treated by the filter (10) and the dryer (11), it enters the high-speed and large-flow pulse solenoid valve (6) through the pipeline connected with the full-pass quick-opening valve 9, and outputs the pulse interval through the multi-channel time-frequency controller (9). The high-speed and large-flow pulse solenoid valve (6) is controlled to open or close with the width to realize the action of the nozzle (5). 2. The bulk material unloading auxiliary device according to claim 1, characterized in that the structure of the spray head (5) is that the shaft tube (16) with a fixed block (13) is installed inside the outer tube (19), The valve (4) is installed in the shaft tube (16), and then the return spring (18) is installed on the shaft tube (16), and the strength of the return spring (18) is adjusted with a nut (17) and locked, through the wall of the warehouse ( 15) pipe sleeve or flange (14) fixed outer pipe (19) of upper reaming welding, and guarantee valve (4) end and hopper (1) inner wall are tangent. 3. The bulk material unloading auxiliary device according to claim 1 or 2, characterized in that the nozzle (5) is connected to the high-speed and large-flow pulse solenoid valve (6), and the pulsed air flow overcomes the resistance of the return spring (18) of the valve (4) , by forming a strong radial airflow (3) along the inner peripheral surface of the air valve (4) between the inner wall of the silo (1) and the bulk material, so as to accelerate the material flow. 4. The bulk material unloading auxiliary device according to claim 1 or 2, characterized in that the nozzle (5) can be installed individually or in multiples according to the structure and size of the silo (1) or the different characteristics of the bulk material, and can be used in conjunction with each other Single-channel or multiple-channel time-frequency controller (8). 5. The auxiliary device for unloading bulk materials according to claim 2, characterized in that the intensity of the bursting radial airflow (3) of the nozzle (5) can be realized by adjusting the air pressure of the high-pressure gas, ranging from 3.0 kgf to 8.0 kgf between. 6. The auxiliary device for unloading bulk materials according to claim 2, characterized in that the pulse interval and width set by the time frequency control (8) should be greater than 0.25 seconds to ensure effective operation of the valve.

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