JPS6147316B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vane pump used, for example, in centrifugal molding of resin tubes, when simultaneously supplying a resin liquid and a catalyst liquid to a rotary mold.

In addition to the above-mentioned centrifugal formation of resin tubes, two types of mixed liquids, which are two types of liquids mixed together, can be produced by, for example,
As seen in Publication No. 99607, it is used as a chemical solution injected into soft ground. The biggest problem in obtaining such a two-part mixture is that each resin is supplied to the supplied part at a predetermined ratio, and that the ratio can be easily and arbitrarily changed. . For this purpose, it is desirable to change and adjust the discharge amount of the liquid supply pump. Conventionally, as seen in Japanese Patent Laid-Open No. 51-42106, for example, by operating the center stator of the vane pump, internal and external Variable displacement pumps are provided that adjust the displacement. However, in this conventional example, the displacement of the space formed on the outside is used to adjust the discharge amount, and therefore, two pumps must be prepared when supplying two liquids.
It is also conceivable to use the space formed inside the rotor to discharge liquids from both the inside and outside, but in this case, the discharge ratio of the two liquids can be changed by operating the center stator. However, when the ejection ratio is changed, for example when looking at the outer ejection amount, this outer ejection amount will change. As a result, the supply amount on the supplied side (receiving side) fluctuates greatly, making it difficult to perform various operations there smoothly. Furthermore, it is not easy to change the discharge ratio while simultaneously adjusting the internal and external discharge amounts, and a more accurate discharge ratio cannot be expected.

The present invention provides a vane pump that can simultaneously discharge two types of liquids at a constant discharge ratio, and that can change the discharge ratio by adjusting only the discharge amount of one of the liquids.

Therefore, in the vane pump of the present invention, the frame is constituted by an outer frame consisting of a lid member at one end and an intermediate member, and a lid member at the other end located on the other end side of the intermediate member, and the rotating shaft passes through the lid member at one end. A rotating body located within an outer hollow formed within the outer frame is integrated at the inner end, and an outer vane plate group located within the outer hollow is attached to the outer periphery of this rotating body.
An inner hollow part is formed between an inner frame passing through the intermediate member and an inner periphery of the rotating body, and an inner vane plate group located within the inner hollow part is attached to the inner periphery of the rotating body, and the inner frame The operating device is fitted into a recess formed in the other end lid member so as to be able to be displaced with respect to the rotational axis, and the inner frame is displaced with respect to the rotational axis. A ring that fits inside the intermediate member and fits outside the inner frame, and a pair of elongated holes that integrate the ring with a cam frame that is rotatably disposed outside the lid member at the other end and are formed in the lid member at the other end. a rod passing through the cam frame, and a fixture for fixing the rotational position of the cam frame, and a suction port and a discharge port communicating with the outer hollow portion are formed at one end in the lid member, and the lid member communicates with the inner hollow portion. A suction passage and a discharge passage are formed from the inner frame to the other end lid member, and a pair of elongated holes formed in the other end lid member are inclined with respect to an arbitrary circumference within the rotational plane of the ring. and are tilted in opposite directions.

According to this configuration of the present invention, by driving the rotating shaft by the drive device and rotating the rotating body, the first liquid can be sucked in from the suction port and discharged from the discharge port by the action of the outer vane plate group, At the same time, by the action of the inner vane plate group, the second liquid can be sucked in from the suction passage and discharged from the discharge passage, thereby making it possible to simultaneously discharge two types of liquid at a constant discharge ratio. In addition, when the fixing device is released and the cam frame is rotated to rotate the ring as a unit, the ring is displaced in the radial direction due to the elongated hole while rotating, so the inner frame is also displaced in the same way, causing the inner vane to rotate. The plate group can be varied. Therefore, while the discharge amount by the outer vane plate group is constant, the discharge amount by the inner vane plate group can be increased or decreased, and thus the discharge ratio can be changed.

An embodiment of the present invention will be described below based on the drawings.

1 is a rotation axis that can rotate around the rotation axis 2,
A driven pulley 3 is attached to its outer end, and a rotating body 4 is integrally formed at its inner end.
A plurality of outer vane plates (vanes) 5 are provided on the outer periphery of the rotating body 4 in the circumferential direction, and springs 6 are provided to urge these outer vane plates 5 to protrude in the radial direction. Furthermore, a plurality of inner vane plates 7 are provided in the circumferential direction on the inner periphery of the rotary body 4, and a spring 8 is provided to urge these inner vane plates 7 to protrude inward. The outer frame 9 surrounding the 5 groups of outer vane plates is composed of a lid member 10 at one end and an annular intermediate member 11, and these members 10 and 11 form an outer hollow portion 12 that guides the 5 groups of outer vane plates. has been done. A suction port 13 communicating with the outer hollow part 12 is formed at the upper end of the one-end cover member 10, and a suction port 13 communicating with the outer hollow part 12 is formed at the lower end.
A discharge port 14 communicating with is formed. 15 is a sealing material provided between both members 10 and 11; 16
17 is a sealing material provided between the intermediate member 11 and the rotating body 4; 18 is a covering member at one end for supporting the rotating shaft 1; This is a bearing provided on the 10 side. An inner frame 19 is fitted into the inner space 21 of the intermediate member 11 so that its position can be changed, and the inner frame 19 is formed with an inner hollow portion 20 for guiding the group of inner vane plates 7 . 22 is a seal provided between the inner frame 19 and the rotating body 4;
3 is a seal provided between the shaft end of the rotating shaft 1 and the inner frame 19, and 24 is also an O-ring.
Reference numeral 25 denotes a cover member at the other end applied to the outside of the intermediate member 11, and the members 10, 11, and 25 are integrated by a fixture 26 made of, for example, bolts and nuts, thereby forming a frame. 27 is a suction passage communicating with the lower end of the inner hollow portion 20; 28 is a discharge passage communicating with the upper end, and these 27 and 28 are connected to the inner frame 1.
9 to the other end cover member 25.
The inner frame 19 is disposed on the other end cover member 25 side.
An operating device 29 is provided for vertically displacing the. That is, the intermediate member 11 and the other end cover member 25
A ring 30 whose inner surface fits externally into the perfectly circular portion of the inner frame 19 is provided between the ring 30 and a pair of long rods 31 formed on the other end of the cover member 25 and connected from the outer surface of the ring 30. It is passed through the hole 32. The pair of elongated holes 32 are provided at the upper and lower positions of the ring 3, as shown in FIG.
They are inclined with respect to an arbitrary circumference within the rotational plane of 0 (in this embodiment, they are inclined in the vertical direction), and furthermore, they are inclined in opposite directions to each other, for example, in a V-shape. The protruding end of the rod 31 is fixed to a collar-shaped cam frame 33, and a nut 35 is provided on the outside of the cam frame 33 to be screwed into a bolt portion 34 formed integrally with the other end cover member 25. . These bolt parts 34 and nuts 3
5 constitutes a fixture that fixes the rotational position of the cam frame 33. A square shaft portion 36 is integrally formed on the side surface of the other end of the inner frame 19, and a rectangular and vertically long recess 37 into which the shaft portion 36 is fitted is formed on the other end of the lid member 25.
By providing the inner frame 19 on the side, the inner frame 19 is prevented from rotating, and the square shaft portion 36 is also provided in the recessed portion 37.
It is configured to move up and down within. Therefore, if the ring 30 is rotated clockwise in FIG. 4, the inner frame 19 will be displaced downward, and if the ring 30 is rotated counterclockwise, the inner frame 19 will be displaced upward. Of course, the circular recess 41 formed in the intermediate member 11 for guiding the ring 30
That is, the size is set such that it can cope with the amount of displacement of the inner frame 19. 38 is a seal provided between the square shaft portion 36 and the other end cover member 25.

By rotating the rotating shaft 1 by starting the drive device (not shown), the outer vane plate 5 and the inner vane plate 7 rotate together with the rotating body 4. As a result, the first liquid E is sucked into the outer hollow part 12 from the suction port 13 and then discharged from the discharge port 14. At the same time, the second liquid F is sucked into the inner hollow part 20 from the suction path 27 and is discharged from the discharge path 28. Thereby, the first liquid E and the second liquid F can be ejected at a constant ejection ratio. When changing this discharge ratio, first loosen the nut 35. Then, when the cam frame 33 is rotated, the rod 31
The ring 30 is rotated via. Then, since the inner frame 19 is prevented from rotating by the square shaft portion 36 and the recessed portion 37, it is raised or lowered.
As a result, the shape of the inner hollow part 20 is changed, and therefore, when it is operated after being fixed by tightening the nut 35, the discharge amount of the second liquid F will be increased or decreased compared to before. Become,
With this, the discharge ratio can be changed.

As described above, according to the configuration of the present invention, the rotating shaft is driven by the drive device and the rotating body is rotated, so that due to the action of the outer vane plate group,
The first liquid can be sucked in from the suction port and discharged from the discharge port, and at the same time, the second liquid can be sucked in from the suction path and discharged from the discharge path by the action of the inner vane plate group. This allows two types of liquids to be ejected simultaneously at a constant ejection ratio. In addition, when the fixing device is released and the cam frame is rotated to rotate the ring as a unit, the ring is displaced in the radial direction due to the elongated hole while rotating, so the inner frame is also displaced in the same way, causing the inner vane to rotate. The plate group can be varied.
Therefore, while the discharge amount by the outer vane plate group is constant, the discharge amount by the inner vane plate group can be increased or decreased, and the discharge ratio can be easily and accurately changed.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a longitudinal sectional view, FIG. 2 is a view taken along the line A-A in FIG. 1, FIG. 3 is a view taken along the line B-B in FIG. FIG. 5 is a view taken along the line C-C, and FIG. 5 is a view taken along the line D-D. DESCRIPTION OF SYMBOLS 1...Rotating shaft, 2...Rotating shaft core, 4...Rotating body, 5...Outer vane plate, 7...Inner vane plate, 9...Outer frame, 10...One end cover member, 11...Intermediate Member, 12...Outer hollow part, 13
... Suction port, 14 ... Discharge port, 19 ... Inner frame, 20 ... Inner hollow part, 25 ... Other end cover member, 2
7...Suction path, 28...Discharge path, 29...Operation mechanism, 30...Ring, 31...Rod, 32...
Elongated hole, 33...Cam frame, 34...Bolt part, 35...Nut, 36...Square shaft part, 37...
Concave portion, E...first liquid, F...second liquid.

Claims (1)

[Claims] 1 The frame is composed of an outer frame consisting of a lid member at one end and an intermediate member, and a lid member at the other end located on the other end side of the intermediate member, and the outer frame is attached to the inner end of a rotating shaft passing through the lid member at one end. A rotating body located within an outer hollow portion formed inside is integrated, an outer vane plate group located within the outer hollow portion is attached to the outer periphery of this rotating body, and an inner frame passing through the intermediate member and an inner periphery of the rotating body are integrated. At the same time, an inner vane plate group located within the inner vane plate is attached to the inner periphery of the rotating body, and a square shaft integrated with the outer end of the inner frame is attached to the other end of the lid member. a ring that is fitted into a recess formed in the intermediate member so as to be displaceable relative to the rotational axis, and an operating device that displaces the inner frame relative to the rotational axis is fitted inside the intermediate member and externally fitted onto the frame; A rod that integrates the ring with a cam frame that is rotatably disposed outside the other end cover member and that passes through a pair of elongated holes formed in the other end cover member, and a fixing member that fixes the rotational position of the cam frame. a suction port and a discharge port communicating with the outer hollow portion are formed at one end of the lid member, and
A suction passage and a discharge passage communicating with the inner hollow portion are formed from the inner frame to the other end lid member, and a pair of elongated holes formed in the other end lid member are formed in an arbitrary direction within the rotational plane of the ring. A vane pump characterized in that the vane pump is tilted with respect to the circumference of the vane pump and is tilted in opposite directions.