JPS5843386A - Controller for supply of spraying material of lining sprayer for furnace body - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention is a method of spraying from a material supply device such as a tank to a nozzle, and mixing a /9 inder with the material that is force-fed to a spraying material such as a chimney, blast furnace, hot blast furnace, etc. The spraying apparatus for spraying the lining of a furnace body is related to a material supply control device.

Conventionally, in 90 types of spraying equipment, the amount of O material discharged from the tip of the nozzle was observed with the naked eye, and when the amount of discharged was too large or too small, and most of all, it was not the appropriate amount, the rotation speed of the motor of the delivery device was adjusted. Adjust manually, or place the material supply device on a weighing machine for spraying.1. During spraying, the situation in which the weight was being reduced as the work progressed was observed in private discussions, and if there was an abnormality in the rate of weight loss, that is, the rate of weight loss, the rotational speed of the motor of the delivery device was manually adjusted.

In general, this type of spraying equipment is divided into two types, depending on whether the material tank is spaced or open, and for either type, the basics of spraying are as follows. What to supply the material to in quantity?:, oly-*.4゜-
17,. ,7o,. . .

Considerable variation occurs in the amount of material discharged in the middle and final stages, and there is a particularly marked difference in the amount of material discharged between the initial and final stages. This is caused by a bridging phenomenon of the material in the material tank ↑ final stage KThff and insufficient filling of the material into the delivery device. Even in the case of an open type, variations in the amount of paper material discharged are observed due to the bridging phenomenon.

To eliminate this bridging phenomenon, it has been proposed to install an isolator at the bottom of the material tank. ! ! In the case of the four-structure type, the material in the tank is filled with vibration, which promotes the bridging phenomenon that becomes stronger and stronger, which has the opposite effect.

As mentioned above, the amount of material discharged varies during the spraying operation. Therefore, it is important to narrow the variation range of the material discharge amount as much as possible, and by keeping the material discharge amount almost constant, it is possible to keep the addition ratio of the Nononingu solution added to it almost constant. becomes.

Therefore, an object of the present invention is to provide a bridging prevention device that prevents the bridging phenomenon of the material during spraying in the material supply device, and to detect the actual amount of material discharged from the material supply device by the delivery device. A control circuit device that controls the operation of the delivery device according to the detected material delivery amount is provided, and a spraying material feeding device device that can maintain the material delivery amount from the material feeding device at a set value is provided. There is a particular thing.

This invention is suitable as a bridge prevention device.
As stated in the specification, a hole is provided on the side of the material hole, and air is intermittently introduced into the material center through the ζOM hole. Although a device adapted to inject the material can be used, other constructions can be used, such as a rod-like or vane-like stirring device rotatably mounted inside the material tank, and the control circuit device can be modified from a combiator device to the present invention. According to one embodiment, the amount of material discharged from the material supply device is measured by a weighing machine, this information is input to the above-mentioned combination device, and if the change in the amount of material discharged exceeds the allowable range, the material is A control signal is supplied to a drive device, such as a variable speed motor, of the quantitative delivery device provided at the lower part of the feeding device, so that the speed of the drive device, such as a variable speed motor, is automatically changed to compensate for fluctuations in the amount of material discharged.

The present invention will be further explained below with reference to the accompanying drawings.

No. 1 wJJC schematically shows an example of a spraying device capable of carrying out the invention of H, I is a material tank constituting a material supply device, and the lower part of this material tank I is provided with any suitable structure such as a fee P wheel. A metered-dose delivery device of the formula t is provided, and this metered-dose delivery device t is driven by a drive device J consisting of a variable speed motor such as a lubricating motor or an electric remote-controlled speed reducer. be done. The material discharge port Ja of the metered quantity dispensing device is connected to the nozzle Jl (through a pressure feed hose). The spray leaf nozzle 1K is combined with an ingu solution adder 4, and this adder 4
The spray is pumped from the nozzle IK through the pressure hose, and the large spray adds to the material at regular intervals the NONOING solution, which is supplied from the NONOING solution tank through the hose 4. Naturally, the addition ratio of Nononinder** can be determined depending on the spraying method used and the properties of the material.
-□Ma9 In Figure 1, sP and 7 are heavy equipment,
On top of this the material is placed by means of a support frame IK.

The weighing machine 7 is equipped with, for example, a digital weight display 7a-C'. When spraying from the material tank I, the amount of material discharged to the nozzle I can be measured.

One or more bridging/preventing devices are installed on the side of the material tank (1) - this bridging/preventing device (in the example shown) is installed on the side of the material tank (1) to ventilate the casing from heat. The structure is such that high-pressure air is intermittently injected from an air pump b into the tank I through a flexible member, and the air injection is controlled by an electromagnetic valve C. This device F/Ii2 can prevent the bridging phenomenon of the sprayed material from occurring in the arm of the material tank L, etc., so that the material can be continuously supplied to the metered delivery device at the bottom. guaranteed.

In the illustrated example, a tank I is used as the material supply device, but a hot spring or storage tank can also be used instead.

In Fig. 2, the apparatus according to the present invention is applied to the spraying apparatus of Fig. 1, and the construction of the embodiment is shown in a block diagram. - In Fig. 1, parts corresponding to the apparatus in Fig. f41 are designated by the same reference numerals. The rack 10 shown by 74 and 10 is an ambiator device comprising a control circuit device which is the main part of Jin's invention. To explain the operation of the device shown in Fig. 1, the total amount of material discharged from the material tank I by the quantitative delivery device 1
The weight is measured using the weight display 1 of the machine 7, and the weighing data is input into the computer device 10. :I computer device io processes this weighing data and determines whether the amount of material discharged from the material tank 1 is within the permissible range.If the amount of material discharged exceeds the permissible range, the computer ♂ Eta device 1
etB, the fixed-rate discharge device's driving device.
A control signal is supplied to the variable speed motor J to change the rotational speed of the variable speed motor JO to compensate for fluctuations in the amount of material discharged by the metering delivery device. The bridge prevention device t is set in consideration of the quality of the material, the structure of the material tank, etc., and is activated at predetermined time intervals by a command signal. Furthermore, the combiator device 10 supplies a command signal to the under melting tri-adder 4 every day, and the spraying is set according to the quality of the material to add the luxurious inder S* number to the material at a constant rate.

Further drawings ec, 'm1. Although not designed, the computer device 70 should be able to quantify the amount of material as soon as it comes out. is also possible. In addition, with spraying, the amount of air required for work is automatically managed within a certain range, but with spraying, the pressure loss increases when the material is conveyed longer than specified in the horizontal, vertical, or both directions. It is necessary to increase the amount of air accordingly. For this purpose, it is also possible to store the relationship between the horizontal and vertical distances of material conveyance in the combiator device ioK and the pressure loss, and automatically control the amount of air based on this.

As described above, according to the present invention, since the spraying can stabilize the amount of material discharged from the material supply device, the addition ratio of the No. 9 Ingu solution is also stabilized, and as a result, a lining with uniform quality of the finished workpiece is obtained. be able to. Since the adjustment of the amount of material supplied from the material supply device and the amount of Nononingu added are automatically controlled in one place, spraying does not require any specialized skills and anyone can perform the process. In addition to making it possible, work that previously had to be done by one worker can now be done by -~7
It can be constructed by humans, resulting in significant labor savings.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing the overall structure of a spraying apparatus according to the present invention, and FIG. 1 is a block diagram showing an embodiment of the apparatus according to the present invention. In the figure, l: Spraying is a material supply device, Koni quantitative delivery device, J
: Variable speed motor, j: Nozzle for spraying, 6: Nonoingu solution adder, 7: Weighing machine, Rini bridge prevention device, No0
: Control circuit device.

Claims (1)

[Scope of Claims] l Spraying may be a material supply device. Spraying may be force-fed to a nozzle. Spraying may be spraying the lining of a furnace body by mixing Nonoin I- with the material and spraying it onto the lining of the furnace body. In the equipment, the spraying can be detected through the metering machine, and the spraying can be detected through the metering machine, and the spraying can be detected through the metering machine, and the spraying can be detected through the quantitative delivery device and the material supplying device. A control circuit device is provided for controlling the operation of the quantitative discharge device according to the amount of material discharged from the material supply device. Spraying m@supply Il characterized by nine
--Attire. 1. The device according to claim 1, wherein the fixed-quantity delivery device is driven by a variable speed motor, and the rotation speed of the variable speed motor is controlled by the output of the control circuit device O. 1. The device according to claim 1, wherein the bridge prevention device is actuated by a command signal from a control circuit device. In the false spraying, the amount of binder added to the material is controlled by a control circuit device.
The device described.