JPS59128132A - Rotary valve - Google Patents

Abstract

PURPOSE:To prevent biting-in of a foreign material onto the rotary vane of a rotary valve by fluidizing powdered body by vibrating a vibrating body in a casing and certainly removing the foreign materials in the powdered body by the utilization of the difference of specific gravity between the powdered body and the foreign material. CONSTITUTION:A vibration plate 42 in a casing 10 is vibrated by a vibration source 48, and the powdered body in the casing 10 is fluidized. Through said fluidization, a heavy material 36 which has a specific gravity larger than that of the powdered body is sunk downward in the powdered body, and the heavy material 38 is discharged from a discharge port 28 formed in the lower part of the casing 10. Further, a light substance 40 having a specific gravity smaller than that of the powdered body is floated-up in the mass of the powdered body and discharged outside from the discharge port 32 formed in the upper part of the casing 10.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotary valve, and more particularly to a rotary valve used for quantitatively supplying powder or granular material. − Rotary valves are used as mechanical devices that handle powder as a convenient and compact feeding basket when supplying powder to different pressure fields without pressure sealing, or discharging powder from different pressure fields. It is used.

The rotary valve rotates the rotor blades while leaving an amount of acid in the rotor chamber in the casing, divides the rotor chamber into small chambers by the rotor blades, and releases the powder and granules in the small chambers. It has a fixed-quantity supply structure.For this reason, if wood particles that are too large to fit into the small chamber get mixed in with the powder, they will get caught between the rotor and the casing, causing the rotor to There is a risk of it stopping or being damaged.

Conventionally, the following measures have been taken to prevent foreign matter from entering the powder. ■For the purpose of protecting the drive unit and rotary valve from damage? U jl 1
A torque limiter, shear bin, etc. are interposed between 1 and the rotary valve. ■A screen is installed at the powder inlet of the rotor chamber of the rotary valve, and this screen removes foreign particles. ■Make the casing removable and remove the section casing that is stuck in the rotor to remove foreign objects. However, in the case where a foreign substance is mixed into the casing, the ridge device must be stopped, which significantly reduces the operating efficiency of the device. Another disadvantage was that when a -4 foreign object became lodged in the rotor blade, the recovery work required a lot of time.

The present invention was made in view of the above-mentioned problems.
The purpose is to propose a rotary lubricant that does not trap foreign matter in powder or granules.

The present invention is characterized in that air is supplied into the casing to fluidize the powder and the foreign matter is removed by utilizing the difference in specific gravity between the powder and the foreign matter. Further, the present invention provides a vibrating body in the casing, and vibrates the vibrating body to fluidize the powder and granule, and removes the foreign matter in the powder and granule by falsely utilizing the difference in specific gravity between the powder and the foreign matter. It is characterized by

A preferred embodiment N of the rotary valve according to the present invention will be described in detail below with reference to the accompanying drawings.

In Figure 1, the upper part of the casing 10 has a powder inlet 1.
2 is formed, and this population 12 is connected to a hopper etc. not shown. There is a powder outlet 1 in the 1OOy part of the casing.
A rotor chamber 16 having a circular cross section is formed above the outlet 14. Jin's rotor room 1
A rotor shaft 18 is disposed at the center of the rotor 11.
1118 has a plurality of rotor blades 20 protruding radially at equal angles. The rotor chamber 16 is divided into a number of stations by adjacent rotor blades 20, and the powder is fed in a fixed amount to the outlet 14 while moving within the chamber.

An air supply port 22 is formed in a regular surface of the casing 10, and this air supply port 22 communicates with an air chamber 24 to supply air 4.
A diffuser plate 26 serves above the air chamber 24, and the air chamber 24 is communicated with the inside of the casing 10 via the diffuser plate 26.

A material discharge port 28 is formed in the upper part of the casing 10, and an openable/closable @30 with one end pivotally supported by a hinge is provided in the upper part of the discharge port 28.

Further, a lightweight foreign matter discharge port 32 is formed in the upper part of the casing 10.

At the top of the discharge port 32, a freely openable cover 34 similar to the lid 30 is provided.

The furnace according to the embodiment of the present invention constructed as described above is as follows. First, the powder enters the casing 10 from the port 12, moves in a fluid state +1 shell in the same direction, and then enters the rotor chamber 16 from the port 36 of the rotor chamber 16.

The powder and granules that have entered the rotor chamber 16 are transferred to the adjacent rotor blades 2.
Exit 14
The constant 4 is supplied from Further, air is supplied from the air supply port 22, and the air supplied from the supply port 22 is supplied to the air chamber 2.
It is supplied into the casing lO through a 4° diffuser plate 26. When air is supplied into the casing lO, the powder becomes fluidized, and when the powder becomes fluid, the powder has properties similar to water, and the heavy foreign matter 38, which has a higher specific gravity than the powder, becomes powder. It sinks downward in the grain. The amount of foreign matter 38 is discharged from the heavy acid foreign matter discharge port 28 formed below the casing 10. Further, the powder 40 having a smaller specific gravity than the powder floats upward in the powder and is discharged from the discharge port 32 to the outside.

FIG. 2 shows the structure of another embodiment 1y;1 of the invention. In the embodiment of No. 21\1, the same members or similar members to those in the embodiment row shown in FIG. In the embodiment shown in FIG. 1, air is supplied into the casing 10 to fluidize the powder, but in the embodiment shown in 21',;4, the following plate 42'f! : Provided to fluidize the powder or granular material.

That is, one end 44 of the imaging plate 42id is pivotally supported by a hinge 45, and the other end is supported by an elastic member 46. Further, a vibration source 48 is provided on the lower surface of the imaging plate 42 . In the rotary valve configured in this way,
2 is activated by the source 48, the powder inside the casing 10 is fluidized. When the powder and granules in the casing 10 are washed away, the heavy object 38 sinks downward, as in the embodiment shown in FIG. 1, and the four foreign objects 40 float upward and are removed.

As explained above, according to the rotary pulp according to the present invention, the powder and granular material in the casing of the rotary valve is fluidized, and the difference in specific gravity is used to sink heavy materials and lift light foreign materials for selection and removal. Since it was decided to do so, there is no possibility that foreign matter mixed in the powder or granules would get caught in the bulge.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing the structure of an embodiment related to I series of the present invention;
FIG. 2 is a sectional view showing the structure of another embodiment of the present invention. lO...Casing 16...Rotor chamber 20...
- Rotor blade 22...Air supply port 24...Air chamber 28...Heavy foreign matter discharge port 32...Light foreign matter discharge port 38...Heavy tA material 40...4 amounts of foreign matter.

Claims (1)

[Claims] 10 A casing, a rotor chamber formed in the casing and having a circular cross section, and a rotor blade disposed in the rotor chamber and dividing the rotor chamber into a plurality of small chambers, which rotate the rotor blade. By doing so, air is supplied into the casing of the rotary valve that supplies the powder and granules in the small chamber to fluidize the powder and granules, making use of the difference in specific gravity between the Saishin body and the foreign matter. A rotary valve that removes foreign matter. 12) It has a casing, a rotor chamber formed in the casing and has a circular cross section, and a rotor blade arranged in the rotor chamber to divide the rotor chamber into small chambers of ia, and by rotating the rotor blade, powder in the small chamber is removed. In the rotary valve that supplies granules, a vibrating body is installed inside the casing, and the vibrating body fluidizes the powder and granules by utilizing the difference in specific gravity between the powder and foreign matter. A rotary valve that removes foreign objects inside.