JPS6011083Y2 - Powder raw material discharge device in cutting equipment - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a crude material discharging device in a cutting device for an airtight furnace, and is particularly suitable as a crude material discharging device in a coke cutting device in a coke dry extinguishing facility.

For example, in a coke cutting device in a conventional coke dry extinguishing system, as shown in Fig. 1, as the cutting valve moves forward and backward with respect to the weighing hopper a, a The inflowing coke powder d is discharged from a discharge pipe e connected to the cut-off valve case C through discharge valves f1 and f2 to a conveyor g in the outside air by natural fall.

In addition, since the interior of the cut-off valve case C and the discharge 'te require airtightness, the discharge valves are connected to the upper part f and the lower part f2.
They are installed in duplicate and operated alternately.

However, the raw material discharge device in such conventional cutting equipment requires a large three-dimensional space such as double discharge valves on the top and bottom and a height to allow the coarse raw material, coke powder, to flow down naturally. This poses an obstacle and constraint on the overall arrangement of the cutting device, and moreover, toxic internal gas is discharged to the outside every time the exhaust valve is operated, significantly deteriorating the working environment.

The present invention is a cutting device for an airtight furnace as described above, in which the raw material that has flowed into the cutting valve case during cutting is recovered into the intermediate bunker by blowing pressurized gas into the cutting device. An object of the present invention is to provide a crude material discharging device that can be relatively freely arranged and that can improve the working environment.

For this reason, the present invention uses a discharge valve provided at the bottom of the discharge pipe connected to the cut-off valve case, and an i! ! A discharge pipe which is cut off and connected between the lower part of the discharge valve and an intermediate bunker provided at the lower part of the raw material hopper; The invention is characterized in that it is equipped with a gas blowing device that blows pressurized gas into the air.

An embodiment of the present invention will be described below with reference to FIG.

FIG. 2 is a sectional elevational view of an embodiment of the present invention shown in correspondence with FIG. 1.

In FIG. 2, reference numeral 1 denotes a weighing hopper, which is one of the raw material hoppers, and accommodates granular coke 2. An intermediate bunker 3 is provided at the bottom of this hopper.
The intermediate bunker 3 has an upper gate 4 therebetween, and a lower gate 5 at the lower end of the intermediate bunker 3.

Reference numeral 6 denotes a plate-shaped cutoff valve, which is surrounded by a cutoff valve case 7 and reciprocates forward and backward relative to the hopper 1 to cut out the coke 2 in the hopper 1. There is.

8 is a discharge pipe connected to the lower part of the case 7, and 9 is a conveyor, which is the same as the apparatus shown in FIG. 1 up to this point.

Furthermore, in FIG. 2, reference numeral 10 is a discharge valve, the upper part of which is connected to the discharge pipe 8, and the lower part connected to the connecting pipe 11.

12 is a discharge pipe, one of which is connected to the discharge valve 10 via the connecting pipe 11.
The bunker 3 is in communication with the lower part of the bunker, and the other end is in communication with the intermediate bunker 3.

Reference numeral 13 indicates a first flapper for preventing backflow, and reference numeral 14 indicates a second flapper for preventing backflow, both of which are provided inside the discharge pipe 12. The wrapper 14 is located near the other end of the discharge tube 12.

15 is a gas pressure source valve provided near one end of the discharge pipe 12.

Reference numeral 16 denotes a gas blowing device which blows gas such as an inert gas having an appropriate pressure into the discharge pipe 12 toward the intermediate bunker 3 as shown by an arrow 17.

In addition, cutout valve case 7, discharge pipe 8, discharge valve 10, connection pipe 1
1, discharge pipe 12, gas pressure source valve 15, gas blowing device 16
, the intermediate bunker 3 has an airtight structure that is shielded from the outside air.

In the powder raw material discharging device configured as shown in FIG. The following parts act to prevent the coke powder 18 that has flowed into the case 7 from being deposited inside the case 7.

That is, the discharge pipe 8 is connected to the rear lower part of the cutoff valve case 7 and allows the coke powder 18 to pass therethrough.

The discharge valve 10 opens and closes the coke breeze falling passage, and in the closed state seals out toxic internal gases.

The discharge pipe 12 sends the coke breeze discharged from the discharge valve 10 to the intermediate bunker 3 by blowing pressure gas such as pressure equalized inert gas into the intermediate bunker 3, that is, by blowing gas from the gas blowing device 16. , the coke breeze is recovered in the bunker 3.

Further, to explain the order of operation, the above-described operation of the cutoff valve 6 causes the coke powder 18 in the cutoff valve case 7 to fall into the discharge pipe 8.

Here, the discharge valve 10 is opened, the gas pressure source valve 15 is closed, and the lower waist gate 5 is closed.

Then, the coke breeze is deposited in the discharge pipe 12 from the discharge valve 10 via the connecting pipe 11.

Then, when the lower gate 5 is opened, the upper gate 4 is closed, and the gas pressure source valve 15 is opened, the pressure gas from the gas blowing device 16 pushes open the first flapper 13 and the discharge pipe 1
2, and due to this blown gas,
The coke breeze in the pipe 12 is transported by gas and
The wrapper 14 is pushed open and the gas flows into the intermediate bunker 3 together with the gas.

In this way, the coke powder 18 in the cutoff valve case 7 can be collected into the intermediate bunker 3.

Note that when the gas pressure source valve 15 is closed and the pressure in the discharge pipe 12 is lower than the pressure in the intermediate bunker 3, the first flapper 13 is also closed, but mainly the 27th flapper 14 is closed. This prevents gas from flowing backward from the intermediate bunker 3 to the discharge pipe 12.

As described above, the powder raw material discharge device in the cut-out device of the present invention has a discharge valve provided at the lower part of the discharge pipe connected to the cut-out valve case, and a discharge valve that is shut off from the outside to separate the lower part of the discharge valve and the raw material. A discharge pipe connected to an intermediate bunker provided at a lower part of the hopper, and a gas blowing device for blowing pressurized gas into the discharge pipe from near the end of the discharge pipe toward the intermediate bunker. Because of this, the layout of the entire cutting device can be freely selected without requiring a large three-dimensional space such as the height required to allow the powder material to flow down naturally, unlike conventional powder material discharge devices. In addition, since powder raw materials are collected in an intermediate bunker rather than being dropped onto a conveyor in the outside air, no toxic gas is released into the outside air, the work environment is significantly improved, and the collection of powder raw materials is also streamlined. The effects of this invention are extremely large, as it can be carried out in a number of ways.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional elevational view of a conventional device, and FIG. 2 is a cross-sectional elevational view showing an embodiment of the present invention. 1... Measuring hopper, 2... Granular coke, 3... Intermediate bunker, 6... Cutting valve, 7... Cutting out Valve case, 8...Discharge pipe, 10...Discharge valve, 12. Bend/discharge pipe, 13.
14... Flapper for preventing backflow, 15... Gas pressure source valve, 16... Curved gas blowing device, 18...
- Powdered coke.

Claims (1)

[Scope of utility model registration request] An intermediate bunker provided at the lower part of the raw material hopper, a cut-out valve that is surrounded by a cut-out valve case and moves forward and backward relative to the raw material hopper to cut out the raw material in the raw material hopper; A cutting device for an airtight furnace having a discharge pipe for discharging the raw material flowing into the cut-out valve case when the discharge valve is cut out, a discharge valve provided at a lower part of the discharge pipe and shut off from outside air. a discharge pipe that connects the lower part of the discharge valve and the intermediate bunker; and a gas blowing device that blows pressurized gas into the discharge pipe from near the end of the discharge pipe toward the intermediate bunker. A crude material discharge device in a cutting device, comprising: