JPS5847031Y2 - Powder and granular material cut-off valve - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement in a valve for cutting out powder and granular materials such as stone powder obtained by crushing iron ore.

Conventionally, in this type of powder and granular material cutoff valve, the first
As shown in the figure, a valve body 1 has a cylindrical valve port 2 hanging down from the inner surface of the top, and a knife valve body 3 is slid under the valve port 2 to open and close the valve port 2. ing.

In this type of valve, even if the upper and lower parts of the insertion part of the knife valve element 3 are clogged with powder or granules e7A, the powder or granules A corresponding to the volume of the knife valve element 3 is pushed out of the valve port 2. A gap portion 4 was formed around the valve port 2 in order to prevent the valve from opening.

That is, when the powder and granules A become clogged up and down due to the void portion 4 around the valve port 2, the powder and granules A form a certain angle (angle of repose α) from the lower edge of the valve port 2. ) and stands still.

When the knife valve body 3 is inserted under the valve port 2 in this state, powder and particulate matter A corresponding to the volume of the knife valve body 3 will be pushed out onto the inclined surface a.

However, such a conventional powder or granular material cut-out valve is difficult to use, for example, when the powder or granular material has high fluidity and the angle of repose α is small, or when the void portion 4 in the valve body 1 is smaller than the volume of the valve body 3. If the knife valve body 3 is small, the knife valve body 3 is inserted when the knife valve body 3 is inserted.
There is no place for the powder and granular material A pushed out by the valve to escape, and if the upper and lower parts of the insertion section become clogged with powder, granular VOA, etc., it becomes difficult to insert the knife valve element 3 and it is impossible to close the valve. There were cases where this happened.

Therefore, the present invention was developed with the aim of solving the above-mentioned problems, and its gist is that a cylindrical valve opening is suspended from the inner surface of the top of the valve box, and the valve is slid under the valve opening. A valve for removing powder and granules is provided with a valve body for opening and closing a valve port, and a valve seat cylinder is provided below the valve port with an insertion gap for the valve body, and the valve seat cylinder is A space communicating with the lower end opening of the valve housing is formed between the periphery and the inner surface of the valve housing, and a substantially horizontally arranged flange is provided on the upper peripheral edge of the valve seat cylinder, and the flange is in contact with the lower edge of the valve port. powder,
A valve for cutting out powder and granular materials is characterized in that it is formed in such a length that two inclined surfaces constituting the angle of repose of the granular materials intersect with each other.

Next, an embodiment of the present invention will be described with reference to FIG. 2 and the following drawings.

In the figure, 10 is a valve box.

A cylindrical valve port 11 hangs down from the top of the valve box 10 and is opened, and a part 12 of the hopper is formed above the valve port 11.

A valve seat cylinder 13 is provided in the valve box 10 below the valve port 11.

The valve seat cylindrical body 13 is formed to have the same diameter as the valve port 11, is arranged coaxially with the valve port 11, and has a valve body insertion gap in which the knife valve body 14 is inserted between its upper end and the peripheral edge of the valve port 11. They are located 15 meters apart.

The valve seat cylinder 13 is installed with a space 16 formed between its outer wall surface and the inner wall surface of the valve box 10.

The flange 17 is attached to the flange 1 of the lower end opening of the valve box 10 so that the flange 17 protrudes from the outer peripheral edge of the lower end.
8 and overlap it and secure it with a screw.

In addition, the flange 17 has numerous openings 19 and 19 for installation.
. . . is opened to allow powder and granular elA that have entered the space 16 to flow downward.

A valve seat flange 20 is integrally molded on the upper end periphery of the valve seat cylinder 13, and the flange 20 serves as a valve seat.

The flange 20 is a slope whose protruding length forms an angle of repose α for powder and granules as shown in FIG. It is formed to protrude further outward than the position where it is located.

The knife valve body 14 is inserted into and removed from the gap between the flange 20 and the valve port 11.

In the above-described embodiment, the valve seat cylinder 13 is integrally formed at the lower end and is fixed by the flange 17, but as shown in FIG. The valve body 10' may be supported by a rib 21 connected between the valve body 10' and the inner circumferential surface of the valve body 10'.

The powder and granular material cut-out valve configured as described above is designed to prevent powder and granular material A from clogging up and down the insertion position of the knife valve body 14 due to an erroneous operation, for example, as shown in FIG. The valve seat remains stationary without flowing into the space 16 outside the valve seat cylinder 13.

When the knife valve body 14 is pushed in in this state, powder and particulate matter A corresponding to the volume of the knife valve body 14 fall into the space 16 from the periphery of the flange 20, and the knife valve body 14 can be easily inserted.

The powder and granular material cutting valve of the present invention is constructed as described above, and a valve seat cylinder is arranged below the valve opening with a valve body insertion gap,
A flange is provided on the upper edge of the cylinder for the valve seat, and the flange is formed in such a length that the inclined surface that constitutes the angle of repose of the powder and granules in contact with the lower edge of the valve opening intersects with the upper surface. Even if the top and bottom are clogged with powder or granular materials when the valve is opened, a space is formed on the outside of the valve seat cylinder, so when the valve element is pushed in, the powder or granular materials corresponding to the volume of the valve element can easily fall out. This makes it possible to easily insert the valve body.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view showing a conventional device, Fig. 2 is a longitudinal sectional view showing an example of the implementation of the present invention, Fig. 3 is a sectional view taken along line I=I in Fig. 2, and Fig. 4 is a partially enlarged view. A sectional view, FIG. 5 is a longitudinal sectional view of another embodiment. 10... Valve box, 11... Valve mouth, 13.
...Cylinder body for valve seat, 14... Knife valve body,
15... Valve body insertion gap, 16... Space.

Claims (1)

[Scope of utility model registration request] A powder and granular material extraction valve comprising a cylindrical valve opening hanging down in the top of the valve box and a valve body sliding under the valve opening to open and close the valve opening, wherein the valve body is provided under the valve opening. A cylindrical body for a valve seat is provided at an insertion gap of 1, and a space communicating with the lower end opening of the valve casing is formed between the periphery of the cylindrical body for a valve seat and the inner surface of the valve body, and a periphery of the upper end of the cylindrical body for a valve seat is provided. comprising a flange arranged approximately horizontally, the flange being formed in such a length that an inclined surface constituting the angle of repose of the powder or granules in contact with the lower edge of the valve port intersects with the upper surface. Valve for cutting things out.