JPH0442545Y2 - - Google Patents

Description

[Detailed Description of the Invention] A. Field of Industrial Application The present invention relates to improvement of the rotating part of a vane pump.

B. Prior Art A conventional vane pump having two orthogonal vanes has a vane groove orthogonal to each other at the axis in the casing, as shown in Japanese Patent Application Laid-open No. 62-7988, which was developed by the inventor of the present invention. A rotor is provided, and two vanes can be inserted into and removed from the rotor from the opposite side of the main shaft along the axial center of the rotor. In the case of large pumps, the rotor is supported by the main shaft and an auxiliary shaft fixed to the opposite side thereof.

C. Problems that the invention aims to solve In the conventional vane pump mentioned above, the rotor is supported by two shafts, the main shaft and the auxiliary shaft, so it takes time to connect the rotor and the auxiliary shaft during assembly, and the bearings are at least 2 each for main axis and auxiliary axis
The structure was complex, requiring individual addresses.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to provide a rotating part of a vane pump that has a simple structure, can be manufactured at low cost, and is extremely easy to assemble.

D. Means for Solving the Problems In order to achieve the above object, the present invention has two vane holes 1a of the same shape and size, which are perpendicular to each other in the radial direction through the axis of rotation, in the longitudinally intermediate portion. an integral shaft 1; and a vane hole 2 connected to each vane hole 1a of the shaft 1.
A is formed, and the rotor 2 is inserted and fixed into the middle part of the shaft 1 through a sinking key, and the rotor 2 passes through one vane hole 2a of the rotor 2 and connects to one vane hole 1a of the shaft 1 with a small gap. A first vane 10 is slidably inserted in the radial direction of the shaft 1, and the first vane 10 is slidably inserted in the radial direction of the shaft 1 through the other vane hole 2a of the rotor 2 into the other vane hole 1a of the shaft 1 with a small gap. The first vane 10 includes a second vane 20 that is movably inserted, and the first vane 10 is provided with a rectangular notch 10a having a major axis and a minor axis in a symmetrical manner on both sides of a center line parallel to the long sides of a rectangular flat plate, As a whole, it is an I-shaped flat plate consisting of flange portions 11 at both ends in the longitudinal direction and a web portion 12 that connects these two flange portions, and both longitudinal ends and the rectangular notch 10a side of the flange portion 11 are chamfered and externally A side chamfer 11a and an inner chamfer 11b are formed, and the one vane hole 2a,
1a, the second vane 20 has a base portion 211 and an upright portion 212.
are integrally formed, and the rising part 212 is the first part.
One L-shaped flat plate 21 is inserted into the other vane hole 2a, 1a through the rectangular notch 10a of the first vane 10, and the raised portion is inserted into the other vane hole 2a, 1a through the other rectangular notch 10a of the first vane 10. 2a, 1a
The one L-shaped flat plate 21 and the other L-shaped flat plate 22 inserted from the opposite side are assembled into a point-symmetrical rectangular ring to form a rectangular hole 20c. The flat plate 22 refers to a fitting concave line or a fitting convex line provided on the butting edges of the base part 211 that are in contact with other L-shaped flat plates, and a raised part 2.
assembled into an integral flat plate by fitting protrusions or fitting grooves provided on the butt edges of 12;
Outer end surface and rectangular hole 20c along the longitudinal direction
An outer chamfer 20a and an inner chamfer 20b are provided at the side ends, respectively, and the first vane 10 and the second vane 20
The lengths in the longitudinal direction are the same and unchanged, and the length of the long side of the rectangular notch 10a of the first vane 10 and the width of the web portion 12 are the same as those of the second vane 20.
This rotating part of the vane pump is characterized in that the long axis and the short axis of the rectangular hole 20c are similar to each other, and the first vane 10 and the second vane 20 are configured to be slidable relative to each other.

E Effect The first vane and the second vane are assembled by being inserted into vane holes provided perpendicularly to an integral shaft whose both ends are supported and a rotor that is fitted and fixed to the shaft. As the pump rotates, it slides in the vane hole in the radial direction of the shaft while each outer end surface is in sliding contact with the inner circumferential surface of the pump channel, applying pressure to the fluid to be delivered and performing a transfer action.

F. Embodiment Hereinafter, embodiments of the present invention will be described based on an embodiment shown in the drawings.

In FIGS. 1 and 2, a shaft 1 has two vane holes 1 having the same shape and size, which are orthogonal to each other in the radial direction through the axis of rotation in the middle part of the shaft 1 in the longitudinal direction.
a and 1b are installed through the plate. Then, the rotor 2 shown by the imaginary line is inserted and fixed via a sinking key (not shown) interposed in the keyway 1b.

The first vane 10, which is an I-shaped flat plate, and the second vane 20, which is a rectangular ring made of two L-shaped flat plates, are inserted into the vane holes 1a, 1a and the vane hole of the rotor 2 with a slight gap, respectively. It is considered possible. That is, as shown in FIGS. 3 and 4, the first vane 10 has a rectangular notch 10a having a long diameter H1 and a rectangular shape H2 symmetrically provided on both sides of a center line parallel to the long sides of a rectangular flat plate. As a whole, flange portions 11, 11 at both ends in the longitudinal direction, and a web portion 1 having a predetermined width A3 that connects these two flange portions.
It has an I shape consisting of 2. Both longitudinal ends of the first vane and the rectangular notch 10a side of the flange 11 are chamfered to form an outer chamfer 11a and an inner chamfer 11b, respectively.

As shown in FIGS. 5 and 6, the second vane 20 is constructed by assembling one L-shaped flat plate 21 and the other L-shaped flat plate 22 of the same shape into a rectangular ring as shown in FIG. 7. On the other hand, the L-shaped flat plate 21 consists of a base portion 211 and an upright portion 212, and its longitudinal length B1 is made equal to the longitudinal length A1 of the first vane 10. And width B2 of the base 211 in the transverse direction
The sum of the width B3 of the upright portion 212 in the width direction is equal to the width A2 of the first vane 10 in the width direction.

These one and the other L-shaped flat plates 21 and 22 can be assembled in a butted state in a point-symmetrical state.
As a result of this assembly, a fitting groove 211a is formed on the base side of the end surface where both plates touch, and a fitting protrusion 212 is formed on the rising side.
a are provided so as to be able to fit into each other. Both plates 21, 2
22 is assembled in this way to form a rectangular hole 20c, the rectangular hole has the following dimensions with respect to the first vane 10, and both vanes can freely slide through the vane hole 1a of the shaft. Cross-assembled.

Long diameter B4 ≒ Long side H1 of rectangular notch Short diameter B5 ≒ Width A3 of web portion An outer chamfer 20 a similar to the first vane and an inner chamfer are provided on both longitudinal outer end surfaces of the second vane 20 and on the rectangular hole 20 c side end surface, respectively. A side chamfer 20b is provided.

In order to assemble the first vane 10 and the second vane 20, the first vane 10 and the second vane 20 are inserted into one vane hole 1a of the shaft 1 through one vane hole 2a of the rotor 2.
One L-shaped flat plate 21 is inserted into the other vane hole 2a, 1a from the raised part 212 side of the first vane 10 through one rectangular notch 10a of the first vane 10. The rising part of the other L-shaped flat plate 22 is inserted into the other vane hole 2a, 1a from the side opposite to the one L-shaped flat plate 21 through the other rectangular notch 10a, and the fitting recess of both L-shaped flat plates 21, 22 is inserted. The strips and the protrusions are fitted together.

The first vane 10 and the second vane assembled in this way
The vane 20 is rotated by the shaft 1 while sliding in the vane holes 1a and 2a in the radial direction of the shaft 1 with its outer end surface along the inner circumferential surface of a pump flow path (not shown). The transfer action is performed by applying pressure to the fluid being fed.

The fitting recesses and protrusions in the second vane 20 are as follows:
A concave line may be provided on the raised part and a convex line may be provided on the base part.

G. Effect of the invention As described above, the rotating part of the vane pump of the present invention has two vane holes penetrating through the longitudinally intermediate part of the shaft, passing through the axis of rotation and perpendicular to each other in the radial direction. The rotor, which has vane holes connected to each vane hole, is fitted and fixed onto the shaft, and the vanes are inserted into the shaft and each vane hole of the rotor, so the shaft is integral and can support both ends. The number of bearings required for the pump as a whole is small, the shaft does not run out even if it is a large pump, and the structure is simple and can be manufactured at low cost.

In the vane, a second vane consisting of two L-shaped flat plates is inserted through the shaft from a right angle direction through the axis of rotation of the shaft, and both L-shaped flat plates of the second vane are inserted into the I-shaped first vane. Since the butting parts are assembled using convex and concave lines, the vane is extremely easy to assemble, and there is no need to use screws to fix it, so there is no risk of pump malfunction or fluid failure due to screw wear or falling off. This prevents contamination into the inside of the body.

In addition, since the first vane and the second vane are provided with an outer chamfer and an inner chamfer, they can smoothly move in the radial direction of the shaft without being hindered by the fluid to be sent, and the flow can be improved. There is also little friction with the inner circumferential surface of the channel, and wear on the inner circumferential surface of the channel is suppressed.

Further, the first vane and the second vane have the same length in the longitudinal direction and are constant according to the inner diameter of the pump, and the dimensions of the rectangular notch and web part of the first vane and the size of the rectangular hole of the second vane are the same. However, when both vanes are assembled, they are set so that they can slide smoothly without rattling each other, so there is no noise or vane malfunction, and the transfer performance is large and reliable. demonstrate.

[Brief explanation of the drawing]

FIG. 1 is a front view of a shaft showing an embodiment of the present invention;
Figure 2 is a cross-sectional view of Figure 1, Figure 3 is a front view of the first vane, Figure 4 is a side view of Figure 3, Figure 5 is a front view of the L-shaped flat plate of the second vane, and Figure 5 is a front view of the L-shaped flat plate of the second vane. Figure 6 is the fifth
The right side view of the figure and FIG. 7 are assembled perspective views of the second vane. 1... Shaft, 1a... Vane hole, 1b... Keyway, 2... Rotor, 2a... Vane hole, 10...
1st vane, 10a... rectangular notch, 11... web part, 12... flange part, 12a... outer chamfer, 12b... inner chamfer, 20... second vane, 20a... outer surface Chamfered part, 20b...inner chamfered part, 20c...rectangular hole, 21...one L-shaped flat plate,
211...Base, 211a...Rising part, 212a
. . . Fitting protrusion, 22 . . . The other L-shaped flat plate.

Claims (1)

[Claims for Utility Model Registration] An integral shaft 1 in which two vane holes 1a of the same shape and size are penetrated through the longitudinally intermediate portion thereof, passing through the axis of rotation and radially orthogonal to each other, and having the same shape and size; Vane holes 2 connected to each vane hole 1a of
A is formed, and the rotor 2 is fitted and fixed to the middle part of the shaft 1 through a sinking key, and the rotor 2 passes through one vane hole 2a of the rotor 2 and connects to one vane hole 1a of the shaft 1 with a small gap. A first vane 10 is slidably inserted in the radial direction of the shaft 1, and the first vane 10 is slidably inserted in the radial direction of the shaft 1 through the other vane hole 2a of the rotor 2 into the other vane hole 1a of the shaft 1 with a small gap. The first vane 10 includes a second vane 20 that is movably inserted, and the first vane 10 is provided with a rectangular notch 10a having a long axis and a short axis in a symmetrical manner on both sides of a center line parallel to the long sides of a rectangular flat plate, As a whole, it is an I-shaped flat plate consisting of flange portions 11 at both ends in the longitudinal direction and a web portion 12 that connects these two flanges, and both ends in the longitudinal direction and the rectangular notch 10a side of the flange portion 11 are chamfered and external A side chamfer 11a and an inner chamfer 11b are formed, and the one vane hole 2a,
1a, the second vane 20 has a base portion 211 and an upright portion 212.
are integrally formed, and the rising part 212 is the first part.
One L-shaped flat plate 21 is inserted into the other vane hole 2a, 1a through the rectangular notch 10a of the first vane 10, and the raised portion is inserted into the other vane hole 2a, 1a through the other rectangular notch 10a of the first vane 10. 2a, 1a
The one L-shaped flat plate 21 and the other L-shaped flat plate 22 inserted from the opposite side are assembled into a point-symmetrical rectangular ring to form a rectangular hole 20c. The flat plate 22 refers to a fitting concave line or a fitting convex line provided on the butting edges of the base part 211 that are in contact with other L-shaped flat plates, and a raised part 2.
assembled into an integral flat plate by fitting protrusions or fitting grooves provided on the butt edges of 12;
Outer end surface and rectangular hole 20c along the longitudinal direction
An outer chamfer 20a and an inner chamfer 20b are provided at the side ends, respectively, and the first vane 10 and the second vane 20
The lengths in the longitudinal direction are the same and unchanged, and the length of the long side of the rectangular notch 10a of the first vane 10 and the width of the web portion 12 are the same as those of the second vane 20.
A rotating part of a vane pump characterized in that the long axis and the short axis of a rectangular hole 20c are similar to each other, and the first vane 10 and the second vane 20 are configured to be slidable relative to each other.