JPH10169546A - Operating device for rotary pump - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotating mechanism and a suction and delivery device required for the operation of a rotary pump. SOLUTION: This device is provided with a rotor 2 and an eccentric stepped groove at a side cover, two rollers 9, 10 are inserted on both sides of a piston pin 5, and rollers 9, 10 are inserted so as to come into contact with the stepped groove at its single surface. The center of the rotor 2 is hollowed until its hole reaches the bottom of a cylinder, notched grooves 14, 14 are formed horizontally and fore & aft at the protruding part 11 of the side cover, which is inserted in the hollowed section of the rotor 2. Flow passages 15, 16 are formed at the grooves 13, 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for operating a rotary pump.

[0002]

2. Description of the Related Art Conventionally, in this type, a piston pin is inserted directly into a groove formed in a side cover, or rollers inserted at both ends of a piston pin are inserted into the groove. It is easy to cause vibration, and there is a point that a sufficient flow path cannot be secured.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to reduce the mechanical vibration and enlarge the flow path to improve the output.

[0004]

In order to achieve the above-mentioned object, the present invention is to provide a suction / discharge opening at the bottom of the cylinder 3 at the same time as the center of the rotor 2 is cut out. 11 and FIG. 2 and FIG.
As shown in FIG. 3, cut grooves 13 and 14 are formed in the left and right, front and rear, and are inserted into the hollow portions of the rotor 2. Further, grooves formed in the inner surfaces of the side covers 19 and 20 are stepped as shown in FIG. Rollers 9 and 10 are inserted at both ends, and the rollers are inserted into the grooves so as to contact only one side of the groove of the side cover. That is, the speed of each roller 9 and 10 changes to force eccentric rotation. If the contact surface of the groove 10 is formed on one side of the groove, it is not necessary to make a gap in the groove and vibration can be reduced. Further, by shifting the positions of the grooves 13 and 14 back and forth, sufficient space for the flow path can be obtained, resulting in an efficient operation. Leads to improvement

[0005]

[Function] Rollers 9 and 1 inserted at both ends of piston pin 5
Numeral 0 rotates in close contact with one side of a different groove, so that it can respond to any speed change. In addition, the relationship between the rotor 2 and the cylinder 3 and the convex portion 11 is in a shaft-to-bearing relationship. Also very advantageous, if the rotor 2 rotates, the grooves 13 and 14 alternately contact the opening 12 at the bottom of the cylinder 3, the piston 4 being equal to the crank movement because the rotor 2 and the piston 4 are eccentric. Actuated so that the notches 13 and 14 act as suction and discharge valves

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A plurality of cylinders 3 are radially formed on a rotor 2 and cuts 6 are formed on the left and right sides of the cylinder 3. The cylinder 3 projects a piston pin 5 from the cut 6 when a piston 4 is inserted. The center is hollowed out. The rotor 2 is mounted on the shaft 17 and is inserted into the storage box 1. Side covers 19 and 20 are attached to both sides of the storage box 1. The grooves formed in the side covers 19 and 20 of the rotary pump having the above configuration are stepped as shown in FIG. 2, and the rollers 9 and 10 which insert the rollers 9 and 10 at both ends of the piston pin 5 are mutually connected. Insert the groove so that it contacts one side of the groove. When the center of the rotor 2 is hollowed, the cylinder bottom is also hollowed, and an opening 12 is formed in the cylinder bottom. As shown in FIGS. 1 and 2, cut grooves 13 and 14 are formed in the convex portion 11 of the face cover 19 in the left, right, front and rear directions, and channels 15 and 16 are formed in the cut grooves 13 and 14.

[0007]

According to the present invention, the output can be expected to be improved because the mechanical vibration can be reduced and the flow path can be expanded.

[Brief description of the drawings]

FIG. 1 is a drawing showing a plane from the side.

FIG. 2 shows a cross section, but a cut groove 1
The positions of 3 and 14 are up and down, this is for ease of explanation, and the right and left in FIG. 1 are correct positions.

[Explanation of symbols]

1 ··· Storage box 2 ··· Rotor 3 ··· Cylinder 4 ··· Piston 5 ··· Piston pin 6 ··· Cut in side of cylinder 7 ··· Groove in side cover Outer surface 8 ... Inner surface of groove in side cover 9 ... Roller 10 ...
Roller 11 Projecting portion 12 of side cover 19
Opening 13 at the bottom of the cylinder
Notch groove 15 ··· Channel 16 ···
Channel 17 ··· Spindle 18 ···
Bearing 19 ... side cover 20 ...
Side cover

Claims (2)

[Claims] (1) Steps of grooves formed on the inner surfaces of the side covers 19 and 20 (2) Rollers 9 and 10 to be inserted at both ends of the piston pin 5 protruding from the cylinder 3, and rollers 9
When inserting the rollers 9 and 10 into the grooves formed in the inner surfaces of the side covers 19 and 20, the rollers 9 and 10 are brought into contact with only one side of the grooves as shown in FIG. (A) When the center of the rotor 2 is cut out, a cutout opening 12 is also formed in the bottom of the cylinder 3 at the same time. Actuating device for rotary pump configured as above, as shown in FIG.