JPS6234698Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a shot grain flow rate regulating device.
Conventionally, as shown in FIGS. 1 and 2, one end of a damper 23 whose base end is pivotally supported by a rotating shaft 21 and a rubber seal 22 affixed to the upper surface is connected to an opening/closing cylinder 24.
The damper 23 is rotatably connected to the piston rod 24a of the damper 24, and is provided so as to be able to move toward and away from the lower end opening of the upper shot introduction pipe 25 by the operation of the opening/closing cylinder 24, so that the opening can be opened and closed. The area can be adjusted. However, this makes it difficult to center the opening in order to reliably close the opening with the damper 23, and it takes time and effort to replace the rubber seal 22.
Furthermore, there is a problem that a large space is required to install the bearing 26 that supports the rotating shaft 21.

The present invention aims to solve these problems.

The configuration of the present invention will be explained below based on examples. 1 is a valve body, and this valve body 1 is provided with a horizontally stepped sliding hole 2 with one side blind. 3 are orthogonally perforated. Inside the sliding hole 2, a stepped shaft 4 consisting of a large-diameter shaft 4a and a small-diameter shaft 4b, and having a large-diameter collar 4c surrounding the stepped portion thereof, passes through the lid member 5 in a freely sliding manner. A cylindrical rubber-like elastic member 6 having a diameter slightly smaller than the diameter of the sliding hole 2 is slidably fitted on the small diameter shaft 4b, and a washer 7 is fitted on the end surface of the small diameter shaft 4b. A bolt 8 is screwed through the elastic member 6 to prevent it from slipping out. Further, the stepped shaft 4 has one end screwed onto the flange portion of the valve body 1, and the piston rod 1 of the cylinder 10 is attached to the upper surface of the support plate 9.
0a via a coupling ring 11, the elastic member 6 slides along the sliding hole 2 by the operation of the cylinder 10, and the elastic member 6 moves along the sliding hole 2 by the pushing operation of the cylinder 10.
It is pressed against the stepped surface of the shot and expands in the radial direction, so that the flow path 3 of the shot can be reliably blocked. Shot introduction pipes 12 and 13 are screwed onto the upper and lower surfaces of the valve body 1 via flanges, and are installed concentrically with the flow path 3.

With this structure, when the elastic member 6 is retracted from the flow path 3 to the slide hole 2 by the contraction operation of the cylinder 10, the flow path 3 is opened, and the shot particles flow into the flow path 3. When the cylinder 10 is pushed out and the elastic member 6 is pressed against the stepped surface of the sliding hole 2 with the large diameter collar 4c of the stepped shaft 4, the elastic member 6 expands in the radial direction and makes the flow path 3 airtight. It is closed to reliably shut off the shot grains and the air for pressurizing the shot. Further, when it is necessary to adjust the flow rate of the shot particles, the opening area of the flow path 3 is adjusted by changing the stroke of the cylinder 10, thereby adjusting the flow rate of the shot particles.

From the above explanation, it is clear that according to the present invention, there is no need to convert linear motion into rotational motion, resulting in a simple and compact structure, eliminating the need for centering work, and maintenance and inspection. It has the effect of making it easier to shoot, and also completely blocking the leakage of shot grains and air for pumping shot, making it a significant contribution to this type of industry.

[Brief explanation of the drawing]

FIG. 1 is a front sectional view for explaining a conventional example of the present invention, FIG. 2 is a side sectional view of FIG. 1, FIG. 3 is a front sectional view showing an embodiment of the present invention, and FIG. 3
FIG.

Claims (1)

[Scope of utility model registration request] A passage 3 through which the shot particles pass is bored through the valve body 1, a sliding hole 2 with a stepped hole on one side is bored across the passage 3, and a stepped hole is formed inside the sliding hole 2. A shaft 4 is provided so as to project concentrically with the sliding hole 2 so that it can move forward and backward, and a cylindrical elastic member 6 that can be slidably moved into the sliding hole 2 is slidably provided on the stepped shaft 4. A shot grain flow rate regulating device characterized in that the flow path 3 can be closed in an airtight manner by fitting.