JPS5841090Y2 - Shot flow rate adjustment device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a shot flow rate adjusting device for adjusting the amount of shot sent to a shot projecting device in a shot blasting device, a shot pinning device, or the like.

The conventional shot flow rate adjustment device, as shown in Fig. 1,
An arcuate plate-shaped valve body 52 is pivotally attached to the outlet of the shot tank 50 or the outlet of a pipe 51 connected to this outlet.
An air cylinder 53 is used to adjust the opening degree of the valve body 52, and the shot that has passed through the valve body 52 falls into a hopper 54 whose upper end is open in the air.
The shots were intercepted and supplied to the shot supply port 56 of the shot projection device 55.

However, in the above device, the opening degree of the valve body 52 is adjusted to change the shot flow rate by fixing a bundle 59 to a nut 58 screwed into a threaded rod 57 connected to the cylinder end of the air cylinder 53, and by rotating the bundle, the cylinder is opened. Since the position of the piston rod was moved relative to the fixed bracket 60 and the stroke end position of the piston rod was changed, the opening adjustment work was troublesome, and the installation space and work space for the equipment were large.

This invention solves the above-mentioned conventional drawbacks, and attempts to provide a shot flow rate adjustment device that allows easy adjustment of the opening of the valve body and requires a small installation space and work space for equipment for adjusting the opening. It is something.

However, in a shot flow rate adjustment device that adjusts the shot flow rate by changing the shot passage area by rotating the valve body, this device has an opening adjustment plate with a pin protruding from the shot flow cylinder that pivots the valve body. The valve body is characterized in that a pin is attached so that the position of the valve can be changed, and a stopper that rotates integrally with the valve body and engages with the pin is provided.

An embodiment of this invention will be described below with reference to FIGS. 2 to 4.

In the figure, 1 is a casing, 2 is its main body, 3 is a front cover, and 4 is a rear cover, and both of these force bars are tightened and fixed to the main body 2 by bolts (not shown).

5 is a shot inlet, 6 is a flange for connecting pipes on the inlet side, 7 is a shot outlet, and 8 is a flange for connecting pipes on the outlet side.

Reference numeral 9 denotes a valve body, which is formed by fixing a fan-shaped plate portion 11.11 to an arcuate plate portion 10. By supporting shafts 12 and 13 fixed to the ends of the valve body by bearings 14 and 15, respectively, the valve body 9 is attached to a casing. It is rotatably attached to 1.

A pin 16 is fixed to the inner surface of the rear cover 4 and locks the fan-shaped plate portion 11 when the valve #9 is fully closed.

Reference numeral 17 denotes a lever fixed to the external protrusion of the shaft 13, the tip of which is bent to form a pointer 18, and a rectangular plate-shaped stopper 19 is fixed to this lever.

20 is a trunnion-type air cylinder, which is rotatably supported by a bracket 21 provided on the front cover 3, and a piston rod 22 is attached to a lever 17 with a pin 23.
connected by.

Reference numeral 24 denotes a disc-shaped opening adjusting plate, on the surface of which a pin 25 that engages with the stopper 19 is fixed and protrudes, and a bolt 27 inserted into an arc-shaped elongated hole 26 is screwed into the front cover 3. Accordingly, the opening adjustment plate 24 is attached to the front cover 3.

28 is a scale written on the front cover 3 for indicating the opening degree.

Reference numeral 29 denotes a rectangular cylindrical throttle member, which has an opening 30 at its lower end close to the valve body 9, and which can be inserted and removed by fitting a flange 31 at its upper end into a fitting part 32 provided in the flange 6 of the casing. It can be installed freely.

The shot flow rate adjusting device 33 having the above configuration is used by connecting its shot inlet 5 side to the shot tank 50 or a pipe 51 connected to the shot tank, and connecting its shot outflow lower side to the pipe 57 leading to the shot projection device. .

The drawing shows the valve body 9 in a fully closed position, and the valve body 9 is locked to the pin 16.

To open the valve body 9, first loosen the bolt 27, rotate the opening adjustment plate 24 around the center of the shaft 13, and then release the pin 2.
5 at the desired position, tighten the bolt 27.

Next, when compressed air is supplied to the air cylinder 20 to cause the piston rod 22 to protrude, the lever 17 rotates until the stopper 19 hits the pin 25, and the valve body 9 opens to the desired opening degree.

At this time, the pointer part 18 of the lever moves to a scale 28 corresponding to the valve opening degree.
instruct.

To change the shot flow rate, the opening adjustment plate 24 may be rotated and fixed in the same manner as described above, and the position of the pin 25 may be changed.

In addition, when it is desired to greatly reduce the shot flow rate or when this shot flow rate adjustment device 33 is incorporated into a shot blasting device that uses shot with a small flow rate, the throttle member 29 is configured with an opening 30 having a small width W in the direction of the rotational axis of the valve body. The aperture member 34 is replaced with another aperture member 34.

Thereby, highly accurate flow rate adjustment can be performed by rotating the valve body 9 over the angle from fully open to fully closed in the vicinity of the small flow rate roughly adjusted by the throttle member 34.

Although the above embodiment describes a flow rate regulating device in which the valve body is housed in a casing, this invention can also be applied to other types of flow regulating devices; for example, a shot tank 50 as shown in FIG. In an external type flow regulating device in which a valve body 52 is pivotally attached to the end of a pipe 51 connected to What is necessary is just to make it lock to the pin 25 by using it as a stopper.

As explained above, this invention allows the opening adjustment plate, which has a protruding pin that locks the stopper that rotates integrally with the valve body, to be able to freely change the pin position on the shot flow cylinder such as the casing or piping. Since it is attached, the opening degree of the valve body can be adjusted by simply changing the mounting position of the opening adjustment plate, and the space for equipment and work space for adjusting the opening degree can be small.

[Brief explanation of the drawing]

Figure 1 is a front view of a conventional shot flow rate regulator, Figure 2 is a front view of a shot flow rate regulator showing an embodiment of this invention, Figure 3 is a plan view, and Figure 4 is the same as in Figure 2. A-A
FIG. 1...Casing, 9...Valve body, 12
...Axis, 13...Axis, 17...
・Lever, 19... Stopper, 24...
・Opening adjustment plate, 25...Pin, 26...
・Elongated hole, 27... Bolt, 33... Shot flow rate adjustment device, 51... Piping, 52...
... Valve body.

Claims (1)

[Scope of utility model registration request] In a shot flow rate adjustment device that adjusts the shot flow rate by rotating the valve body and changing the shot passage area,
An opening adjustment plate with a protruding pin is attached to the shot flow cylinder that pivotally supports the valve body so that the pin position can be changed, and a stopper is provided that rotates integrally with the valve body and engages with the pin. Shot flow rate adjustment device.