JPH0772539B2 - Vane pump with rotating divider - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a vane pump having a rotary partitioning plate, and more particularly to an improvement of the applicant's patent No. 819130.

[Prior Art] In the patent No. 819130, the applicant of the present invention, in which the suction amount and the discharge amount are always constant during operation, the load unevenness is small, and the driving force that rotates the motor extremely efficiently is effective. Provided is a vane pump with a rotating divider for use.

[Problems to be Solved by the Invention] In the vane pump having the rotary partitioning plate of Japanese Patent No. 819130, the discharge port is provided in front of the partition boundary line of the outer casing side wall, the suction port is provided at the rear side, and the conical side wall is provided. A window is formed, and the partition boundary lines are located at two locations on the upper right side and the lower left side of the outer casing, and an inlet port and an outlet port are formed at the front and rear, respectively, so it is necessary to provide a total of four. However, the manufacturing cost is high, the outer casing is mechanically fragile, and the suction and discharge of the fluid are not carried out on average.

[Technical Means for Solving the Problems] This invention eliminates the provision of a discharge port in front of the partition boundary line of the outer casing side wall and a suction port in the rear side in the above patent, and A suction port is provided on one side of the main shaft that is penetrated through, and a discharge port is provided on the other side. By forming the above, the above-mentioned drawbacks are eliminated.

[Operation] According to the vane pump having the rotary partitioning plate having the above-described configuration, when the main shaft is rotated at a constant speed by another driving device (not shown), the fan-shaped vanes integrated with the ball shaft are Since the swing shaft that rotates in the fan-shaped working chamber and is slidably fitted to the fan-shaped vane is closely guided to the circular partition board in the fan-shaped working chamber and rocks while maintaining watertightness, the fan-shaped working chamber Causes a pressure difference of.

Then, as the fan vanes rotate in the fan working chamber, the pressure increases in front of the fan vanes and negative pressure occurs in the rear of the fan vanes to generate suction force. Therefore, the fluid is introduced into the working chamber from one suction port of the main shaft, the suction port of the spherical shaft, and the like.

The fluid in the working chamber is compressed by the partition plate and the vane, and is discharged to the outside from the other discharge port through the discharge port of the ball shaft.

[Embodiment] An embodiment of a pane pump having a rotary partitioning board according to the present invention will be described with reference to the accompanying drawings.

In FIGS. 1 to 4, a fan-shaped outer casing 10 in cross section is an arcuate circumferential wall 10
A guide groove 10b is formed from one of the inner circumferential surface of a and its diagonal line, and conical side walls 12 and 12a narrowing toward the center are fixed to both ends of the arcuate portion, and penetrated in the center of the side walls 12 and 12a. Mouth 14
To form.

Bearings 18, such as roller bearings, are provided at both ends of the inner wall of the through hole so that a main shaft 30 penetrating a spherical shaft 20 described later is rotatably provided. Therefore, the outer casing 10 has a fan-shaped cross section that narrows at the central portion, that is, the main portion.

The ball shaft 20 shown in the tenth to sixteenth is provided at the center of the outer casing 10. The ball shaft has a diameter larger than that of the internal through hole 14a and partially projects into the working chamber 16, and both ends 20c, 20c thereof are conical side walls 12. , 12a have a shape that narrows toward the center corresponding to the inner surfaces 12c, 12c where the central portion of the main shaft 30 becomes narrower, and a through hole 20b of the main shaft 30 is bored at the center of both ends 20c, 20c. As shown in FIGS. 10 to 14, fan-shaped vanes 23, which widen from the center toward the circumference, are vertically and integrally provided on the spherical shaft, and each of the arc-shaped wall 10a and the conical side walls 12, 12a on both sides in the working chamber 16 is provided. Make it slidable while maintaining watertightness with the surface.

As shown in FIG. 12, an intake port 21 and a discharge port 22 are formed from the inner surface of the through hole 20b toward both sides of the vane 23, and the swing shaft 26 shown in FIG. It straddles and fits in close contact with the R surface of the vane so as to be freely slidable, so that the swing shaft can swing right and left on the circumferential surface of the vane and on both sides.

7 to 9, the main shaft 30 fitted in the through hole 20b of the ball shaft 20 has a central portion 30a having an outer diameter slightly smaller than the inner diameter of the through hole 20b, and the latter is watertight. In particular, as shown in FIG. 8, a partition wall 31 is provided in the central longitudinal direction in the central portion 30a, and the cylindrical wall of the main shaft is cut out in the longitudinal direction to form the release windows 31a and 31b, respectively. To be connected to the suction port 21 and the discharge port 22, respectively, and to be described later, a suction port 34a and a discharge port 3
Partitions 36 and 36a are formed at the innermost portion of 4b at the positions corresponding to the radial sides of the release windows 31a and 31b, respectively, as shown in FIGS. 7 and 9 to form the suction port 21, the discharge port 22, and the outer casing 10. It is possible to communicate with the inside of the working chamber 16.

On both sides of the central portion 30a of the main shaft 30, cylindrical portions 32a, 32b having a smaller diameter and penetrating into the internal through hole 14a of the conical side walls 12, 12a are formed, and further, the small diameters at both ends of the cylindrical portions 32a, 32b. Cylinder 33a, 3
3b to form a suction port 34b and a discharge port 34a.

The main shaft 30 is fitted and fixed in the through hole 20b of the spherical shaft 20, and the cylindrical portions 32a, 32b of the main shaft are rotatably passed through the roller bearings 18, 18 into the inner through hole 14b of the outer casing 10. To do. The suction port 21 and the discharge port 22 of the ball shaft 20 are separated by the release window 31
It is fixed in conformity with a and 31b while it is open, and both suction and discharge can always be freely communicated.

In FIGS. 5 and 6, the circular partition board 40 has a guide groove 10b whose circumference 41 is formed on the inner surface of the arc-shaped wall 10a of the fan-shaped outer casing 10 in cross section.
Have a size that matches the inside, have a gentle gradient in the circumferential direction from the center, and form a through-hole 42 into which the spherical axis fits in the central portion, and the spherical surface of the spherical axis on the peripheral surface of the through-hole. A curved surface 42a corresponding to is formed so that the periphery of the spherical axis can be closely attached.

From the through-hole 42 to the circumference, the vane 23 of the spherical shaft 20 and the swing shaft
A fitting groove 44 for fitting with 26 is formed, and a curved surface 44a is also formed on the inner surface of the fitting groove toward the center thereof so that the vane can be brought into close contact with the fitting groove of the partitioning board 40. To do.

In production, as shown in FIG. 6, the contact surface is divided into concavo-convex shapes on the radial line of the circular partitioning board 40 to form two semi-discs 40a, 40a, and the concavo-convex portions 40b, 40b on the radial line.・ Translucency 40c, 40c ・ ・
To drill.

The concavo-convex portions are fitted to each other, and the bolts 46 are screwed into the light transmitting portions 40c, 40c ...
A single circular partition board 40 is composed of 40a.

In assembly, the spherical shaft 20 is fitted in the through hole 42 of the circular partitioning board 40, and the one in which the vane 23 and the swing shaft 26 are fitted in the fitting groove 44 is introduced into the arc-shaped wall 10a. The head 26a of the swing shaft 26 fitted in the guide groove 10b of the arc-shaped wall straddling it over the spherical axis is fitted in the guide groove 10b, and the conical side walls 12, 12a are provided on both sides of the arc-shaped wall. Stick to it. Further, the circumferential wall of the partition board 40 is fitted in the guide groove 10b of the arcuate wall 10a in a watertight state.

Therefore, the ball shaft 20 is rotatably passed through the through hole 14 of the outer casing 10, the main shaft 30 is fitted into the through hole 20b of the ball shaft and fixed to the latter, and the main window release windows 31a and 31b are formed. Is the suction port of the ball shaft
It is arranged so as to face 21 and the discharge port 22. The roller bearings 18, 18 are interposed between the cylindrical portions 32a, 32b having a smaller diameter and the through hole 14 on both sides of the central portion 30a of the main shaft, so that the main shaft smoothly rotates in the through hole 20b. To be done.

The guide groove 10b of the circular partition board 40 is formed so as to be inclined about 15 ° with respect to the vertical line of the main shaft 30. The partition board is in contact with the right conical side wall 12a in the upper guide groove 10b of the outer casing 10 and in contact with the left conical side wall 12 in the lower guide groove 10b, and both are kept watertight. Therefore, the volume inside the outer casing 10 is divided into two by the partitioning board which serves as a partition line, and the chamber 11 on the right side and the chamber 11a on the left side thereof are divided.
And isolated.

When the main shaft 30 is rotated in a certain direction by another drive source (not shown), the spherical shaft 20 integrated with the main shaft rotates through the roller bearing 18 at the internal through hole 14b, and at the same time, the circular partitioning machine.
40 and the fan-shaped vane 23 integrated therewith also rotate. As a result, the rotation of the fan-shaped vanes causes the suction port 34b of the main shaft and the release window 3
The fluid sucked from 1a is fed from the suction port 21 of the ball shaft 20 to the working chamber 16
Guided inside, it is compressed in front of the fan vanes 23.

At the same time, the fan-shaped vanes and the main shaft 30 have a vertical line of about 15 ° C.
Since the volume inside the working chamber 16 is reduced by the partitioning board 40 that rotates in an inclined manner, the fluid in front of the fan-shaped vane 23 is compressed and discharged from the through hole 22 of the ball shaft 20 through the release window 31a and the discharge port 34a. To be done.

As a result, the volume inside the working chamber 16 increases on the back surface of the fan-shaped vane 23, so that the fluid is sucked through the suction port 34a and the release window 31a.

As shown in Fig. 3, when the fan-shaped vane 23 is in the horizontal position,
Since the volume inside 10 is divided into two by the partition board 40 and further divided into two by the fan-shaped vane, the inside of the outer casing is divided into four to form four chambers.

When the fan-shaped vane further rotates and comes into contact with the conical side wall 12a of the outer casing 10, the right-side chamber 11 inside the outer casing is not divided by the fan-shaped vane and remains as one chamber. Three
Become a room.

In this way, the fan-shaped vanes 23 integrated with the ball shaft 20 rotate inside the outer casing 10, so that the fan-shaped vanes rotate while dividing the inside of the outer casing into 3 to 4 parts.

Therefore, the swing shaft 26 slidably fitted over the fan-shaped vane from above is slidably fitted in close contact with the R surface of the circular partition board 40, and the swing shaft is Rotate the partition board 40.

[Effects] In the vane pump having the rotary partitioning plate having the above-mentioned configuration, the inside of the working chamber 16 is divided by the partitioning plate 40 that is inclined about 15 ° with respect to the vertical line of the fan-shaped vane 23 and the main shaft 30. Since the swing shaft 26 fitted to the fan-shaped vane from above is slidably fitted in close contact with the R surface of the circular partitioning machine to maintain a sufficient watertight state. Fluid suction, compression, and discharge can be performed very effectively.

[Brief description of drawings]

FIG. 1 shows a vane having a rotary partitioning board according to the present invention.
A front view of an embodiment of the pump, FIG. 2 is a left side view of FIG. 1, FIG. 3 is a sectional view taken along line 111-111 of FIG. 1, and FIG.
Fig. 3 is a longitudinal sectional view showing a state in which a main spindle ball shaft, a circular partition board, a fan-shaped vane and a swing shaft are removed from the outer casing shown in Fig. 3, Fig. 5 is a partially transparent front view of the circular partition board, Fig. 6 Is a partially transparent side view of FIG. 5, FIG. 7 is a partially cutaway transparent front view of the main shaft, FIG. 8 is a vertical sectional view taken along line V111-V111 of FIG. 7, and FIG.
FIG. 7 is a vertical sectional view taken along the line 1X-1X, FIG. 10 is a front view of a spherical shaft and a swing shaft fitted over the spherical shaft, and FIG. 11 is a side view of FIG. 10 and FIG. Is a longitudinal sectional view taken along the line X1-X1 in FIG. X, FIG. 13 is a plan view of FIG. X, and FIG. 14 is a plan view showing a state in which the swing shaft is removed from FIG. 13, FIG. Is a front view of the swing shaft,
FIG. 16 is a partially transparent schematic bottom view showing the central portion of the spherical axis. 10 ... Outer casing; 12, 12a ... Side wall; 14 ... Through-hole; 14a ......... Internal through-hole; 16 ... Working chamber; 20 ... Ball shaft; 21 ... Suction port; 22 ... Discharge port 23 ...... Fan-shaped vanes; 26 ... Rotating shafts; 30 ... Main shafts; 31 ... Axial bulkheads; 31a, 31b ... Opening windows; 34b ... Suction ports; 34a ... Discharge ports; 36,36a ... … Radial bulkhead; 40… Circular partitioning board; 42… Through hole.

Claims (1)

[Claims] 1. A fan-shaped cross section having an arcuate circumferential wall and a conical side wall and having a bearing formed at the center; and a fan-shaped vane having a through-hole at the center and corresponding to a fan-shaped working chamber in the fan-shaped outer box. Are integrally formed in the longitudinal direction of the circumference, and an intake port and a discharge port, which communicate with the through-hole, are formed in the front and rear of the fan-shaped vane, respectively, and are slidably fitted across the front and rear surfaces of the fan-shaped vane and the head. A ball shaft having a combined swing shaft and rotatably fitted in the bearing; a suction port on one side, the suction port and the discharge port at the through hole of the ball shaft at the center A main shaft fixed to the spherical shaft fitted in the through-hole of the fan-shaped outer casing and rotatably fitted in the through-hole of the fan-shaped outer casing. A circular space having a gentle slope from the center toward the circumference and having a curved surface on the periphery of which the spherical axis is in close contact, and a circle from the circular space A groove having a curved surface in which the fan-shaped vane and the swing shaft are in close contact with each other, and the spherical shaft is closely fitted in the circular space. Further, the fan-shaped vane is fitted in the groove, and is composed of a circular partitioning plate which is inclined and fixed at a constant angle with respect to the main shaft; and the fan-shaped vane integrated with the spherical shaft according to the rotation of the main shaft. By rotating the swing shaft, the front and rear surfaces of the fan-shaped vane and the head are slidably reciprocated, and the inside of the fan-shaped outer casing is divided into 3 to 4 by the circular partitioning board and the fan-shaped vane. The fluid sucked from the suction port of the main shaft is compressed in the working chamber by the circular partitioning plate and the fan-shaped vane, and is discharged from the discharge port through the discharge port of the spherical shaft and the release window of the main shaft. A vane pump with a rotating partitioning panel.