JPS6042398B2 - Powder discharge device for vertical furnace - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a powder discharge device for a vertical furnace that requires airtightness.

An example of a powder discharge device for a vertical furnace that requires airtightness is a device that discharges cooled coke from a cooling chamber of a coke dry extinguishing facility.

FIG. 1 shows an example of the device. In the figure, 1 is a lower part of the cooling chamber, 2 is a cut gate, 3 is an intermediate hopper, 4 is an upper seal valve, 5 is a lower seal valve, and 6 is a wharf device.

The cooled coke is intermittently cut out in an amount corresponding to the capacity of the intermediate hopper 3 by opening the cut gate 2 for a short time, and the cut coke is passed through the upper seal with the lower seal valve 5 closed. Open the valve 4 to charge the intermediate hopper 3, then open the lower seal valve 5 to charge the intermediate hopper 3.
From there, the coke is discharged to the wharf device 6, where it is temporarily accumulated, and the coke flow rate is adjusted by an adjustment gate 82, and then discharged to the belt conveyor 7. Therefore, as shown in FIG. 1, the conventional device has a problem in that the overall height of the discharge device is large and the equipment cost increases.

In response to this problem, the applicant has previously filed patent application Shoseki-463.
In No. 27, a conveying device for continuously and quantitatively feeding out the powder and granules is installed in an airtight chamber at the bottom of the powder outlet of the vertical furnace, and a rotary seal valve is installed at the discharge part of the conveying device. In addition, the present invention proposes a powder discharge device characterized in that the conveyance device is configured to be able to control the supply amount to be less than the capacity of each chamber formed by the rotor blades and side plates of the rotary seal valve. There is.

The object of the present invention is to provide a rotary seal valve with even higher sealing performance in the apparatus proposed in Japanese Patent Application No. 58-46327.

That is, a conveying device of the type that continuously and quantitatively delivers the powder and granules is provided in an airtight chamber below the powder and granular material outlet of the vertical furnace, and a rotary seal valve is provided at the discharge section of the conveying device. The device is an inner surface of the casing facing the tip of the rotor blade of the rotary seal valve in a discharge device configured to be able to control the supply amount to be less than the capacity of each chamber formed by the rotor blade and side plate of the rotary seal valve. and a lip row or A sealer row in which a plurality of sealers movable in the radial direction are implanted is provided, and the length of the lip row or row is longer than the pitch of the rotor blades, and the pitch of the lip or sealer is equal to the pitch of the rotor blades. By forming the rotor blade to be less than the thickness, the tips of at least one rotor blade are in contact with each lip row or sealer row, and at least one lip or sealer is in contact with the tip of one rotor blade. The invention is characterized in that it is configured to do so.

Embodiments of the present invention will be described below based on the drawings.

FIG. 2 is a sectional view schematically showing an apparatus according to an embodiment of the present invention.

In the figure, 10 is a vibration feeder, which cuts out a fixed amount of cooled coke from the cooling chamber 1. 14 is a supply port of the rotary seal valve 11, and 15 is a discharge port.

The rotary seal valve 11 maintains airtightness with the outside air,
It continuously discharges powder and granular materials, and consists of a rotor 12, a casing 13, etc., and the rotor 12, as shown in the perspective view of FIG. 3, has a cylinder 23 and rotor blades 21 extending radially from the cylinder 23. and side plates 20 provided on both sides thereof. In the rotary seal valve having the above configuration, a space is formed by the rotor blade 21, the outer surface of the cylinder 23, the side plate 20, and the casing seal surface 22, which will be described later.
Determine the airtight performance of the rotary seal valve 11.

First, an embodiment of a seal structure in which a lip is provided on the inner surface of the casing will be described with reference to FIGS. 4 and 5. Figure 4 is a cross-sectional view of the rotary seal valve, and Figure 5 is a cross-sectional view of the rotary seal valve.
It is an AA sectional view of the figure.

In this method, the airtightness between the casing seal surface 22 and the tip 24 of the rotor blade 21 is achieved by the casing seal surface 22.
The tip 24 of the rotor blade 21 is held in close contact with the lip 27 provided in the axial direction of the rotor.

The lip row 26 includes lips 21 made of an elastic material such as rubber.
The lip rows 26 are provided on the inner surface of the casing facing the tips 24 of the rotor blades 21 on the feeding side A and the non-feeding side B of the powder, respectively. At least one rotor blade tip 24 slides on each of these lip rows 26, and at least one lip 27 slides on the sliding portion.
is constructed so that it slides on the rotor blade tip 24. For this purpose, it is necessary to form the lip row 26 to have a length L greater than or equal to the pitch Pl of the rotor blades 21, and to form the lip row 27 to have a pitch P, less than or equal to the thickness T of the rotor blades 21. Annular sealing device 25 shown in FIG.
The ring seal material 30 is pressed against the circumferential surface of the side plate 20 of the rotor 12 by a spring 31, and the air inlet hole 32, gas at a higher pressure than the inside of the furnace is injected to purge the intrusion of dust from inside the furnace.

33 is a ground backing for backup.

Naturally, the sliding surface of the ring seal material 30 should be coated with a lubricant, or a self-lubricating material such as Teflon should be used. The end of the lip row 26 is in close contact with the ring seal material 3.

Therefore, such a structure provides excellent sealing performance. Next, embodiments of two types of seal structures in which sealers are provided on the inner surface of the casing will be described based on FIGS. 6 to 8L.

FIG. 6 is a sectional view of the rotary seal valve, FIG. 7 is an enlarged view of part B in FIG. 6, and FIG. 8 is a sectional view taken along line CC in FIG. 6 (Figure).

In this method, the airtightness between the casing seal surface 22 and the tip 24 of the rotor blade 21 is achieved by the casing seal surface 22.
The sealer 2V provided along the rotor axial direction and the tip 24 of the rotor blade 21 are held in close contact with each other.

The sealer 27″ is a groove 3 provided in the casing 13.
4, and is brought into close contact with the rotor blade tip 24 by the pressure of purge gas supplied from a spring 35 or an injection hole 36. Seal par row 26″ is seal par 27″? As in the previous embodiment, they are provided on the feeding side A and the non-feeding side B of the powder exchange, respectively. At least one or more rotor blade tips 24 are sliding on each of these seal par rows 26'', and at least one or more seal pars 2'' are sliding against the rotor blade tips 24 in the sliding portions. It is constructed so that it is sliding.For this purpose, the length of the sealer row and the pitch of the sealer are determined in the same manner as in the embodiment described above.
The annular sealing device 25'' shown in FIG.
3 and the circumferential surface of the side plate 20, a ring sealing material 3' is pressed against the circumferential surface of the side plate 20 of the rotor 12 by a spring 31, and the air inlet 32 is pressed against the circumferential surface of the side plate 20 of the rotor 12. '' gas is injected at a higher pressure than the furnace V,
Purging the intrusion of dust from inside the furnace.

33″ is a ground backing for backup.

Oh, right? Is there any lubricant on the sliding surface of ring seal material 3?
A self-lubricating material such as Teflon should be used. A high degree of sealing performance can be obtained by the arrangement of the sealer rows and the annular sealer L device 25'' as described above.

Next, the common features of the system in which the elastic lip 27 and the radially retractable sealer 27'' are provided will be explained.

Since the vibrating feeder 10 has good quantitative cutting properties, it does not supply more than its capacity to each space (room) constituted by the rotor blade 21 and the side plate 20.

In other words, it is possible to control the amount of powder and granular material supplied so that each space does not become full. Therefore, it is possible to provide an appropriate space so that the powder does not come into contact with the casing sealing surface 22, and the powder or O particles can damage the elastic lip 27 or the sealer 27'', which can move forward and backward in the radial direction. In this embodiment, a vibrating feeder is used as the conveying device for the upper part of the rotary seal valve 11, but an apron feeder, roll feeder, etc. may also be used. In FIGS. 4 and 6, 28 is It is a dust scraper that removes powder and granules on the top of the rotor blade tips 24, and removes particles such as rubber.
Made of elastic material.

Further, 29 is a lubricating device that applies lubricating oil to the tip 24 of the mouth blade so that it can smoothly slide against the lip 27 or the sealer. As explained above, according to the present invention, the sealing performance with the outside air is very excellent, and the discharge device is simple, so its height is reduced.

Therefore, the overall cost of the vertical furnace, which must be airtight, is reduced, and the equipment cost i is greatly reduced.

[Brief explanation of the drawing]

Figure 1 is a schematic diagram of the discharge device of a conventional coke dry extinguishing system with an intermediate hopper. 2 to 8 show embodiments of the present invention, and FIG.
FIG. 3 is a perspective view of the rotor of the rotor seal valve, and FIG. 4 is a schematic diagram of the entire device of the present invention.
- Cross-sectional explanatory diagram showing the structure of the tally seal valve, No. 5 (is an explanatory diagram of the A-A cross section in Fig. 3, and Fig. 6 is an explanatory diagram of the A-A cross section in Fig. 3.
(The structure of a rotary seal valve with a seal)
(Explanatory cross-sectional view, Fig. 7 is an enlarged view of section B in Fig. 6, 4t1)
, FIG. 8 is an explanatory diagram of the C-C cross section in FIG. 6.
. In the figure: 1...Lower part of the cooling chamber of the coke dry fire extinguishing system, 2...Cut gate, 3...
...Intermediate hopper, 4...Seal valve,
5... lower seal valve, 6... wharf device, 7... belt conveyor, 8... lowering tote, 10... vibrating feeder , 11...
... Mouth seal valve, 12 ... Rotor, 1
3...4 singling, 14...powder supply port, 15...powder discharge port, 20...side plate, 21... Rotor blades 22...Casing seal surface, 23...Cylinder, 4...
Tip of rotor blade, 25...Ring ε le device,
26...Lip row, 27...Lip,? Ge 6ζIOI Sealper row, 275... Sealper, -ta 8... Dust scraper, 29
...Oil supply device, r- 0,3'...Ring seal material, 31,3'...Vertical spring, 3
2,32″・・・Purge gas injection hole, 33,
33Z...Ground backing, 3? ...
・Groove, 35...Spring, 36...Purge/spring injection hole.

Claims (1)

[Scope of Claims] 1. A conveying device for continuously and quantitatively feeding out the powder and granules is provided in an airtight chamber below the powder and granular material outlet of the vertical furnace, and a rotary seal valve is provided at the discharge part of the conveying device. In addition, the conveying device accommodates the rotor of the rotary seal valve in a discharge device configured to be able to control the supply amount of the rotor of the rotary seal valve to a supply amount smaller than the capacity of each chamber formed by the blades and the side plate. A plurality of elastic lips are provided on the inner surface of the casing, which is located on the feeding side A and the non-feeding side B with the inlet and outlet for the powder and granular material formed in the casing inside. Powder grains of a vertical furnace, characterized in that lip rows are arranged, each lip row is formed to have a length equal to or longer than the pitch of the rotor blades, and the pitch of the lips is formed to be equal to or less than the thickness of the rotor blades. Body evacuation device. 2. A conveyance device of a type that continuously and quantitatively sends out the powder and granules is provided in the airtight chamber below the powder and granule outlet of the vertical furnace, and a rotary seal valve is further provided at the discharge part of the conveyance device, and the conveyor The device is an inner surface of a casing housing the rotor of the rotary seal valve in a discharge device configured to be able to control the supply amount to be less than the capacity of each chamber formed by the rotor blades and side plates of the rotary seal valve. , and the portions located on the feeding side A and the non-feeding side B with the powder intake and discharge ports formed in the casing inside are movable in the radial direction and have elastic bodies at the bottom of each. Seal bar rows are each formed by planting a plurality of interpolated seal bars, and the seal bar rows are formed to have a length longer than the pitch of the rotor blades, and the pitch of the seal bars is equal to the thickness of the rotor blades. A powder discharge device for a vertical furnace, characterized in that it is formed to have a diameter smaller than 1.