JPH0730750B2 - Vane pump - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a vane pump.

[Prior Art and Problems] As is well known, in a vane pump, an appropriate number of vanes (blades) are provided on a peripheral surface of a rotor arranged in a casing at appropriate intervals in the rotational direction of the rotor, and the vanes are separated from each other. The fluid sucked in is pushed out from the suction side to the discharge side. By the way, in the conventional case, the inclination of the vanes on the rotor peripheral surface is fixed in a fixed direction, so even if there is no problem in rotating the rotor in the forward direction, the rotor is rotated in the reverse direction and the fluid flows in the reverse direction. Was unsuitable and the output of the motor was not sufficiently transmitted to the fluid. Therefore, the conventional vane pump has been inconvenient for use in a fluid conduit that requires reversible flow of fluid, such as a fiber dyeing device described later.

[Means for Solving Problems] Therefore, the vane pump of the present invention is intended to enable reversible flow-through of a fluid and at the same time to achieve effective extraction of the extrusion output of the fluid. A reversibly rotatable rotor is provided in which a pair of rotating plates are provided in front and rear at a fixed distance in a substantially circular casing in which two fluid pipes are connected to each other, and the front side of the rotor is rotated. An opening is provided in the center of the plate, a lower end is connected to the opening, and an upper end is connected to the two fluid conduits. A common conduit is provided in each fluid conduit. Alternatively, a check valve for switching the flow of fluid into the common pipe line is provided so that an appropriate number of vanes can be freely rotated in the rotational direction of the rotor at appropriate intervals in the rotational direction of the peripheral surface of the rotor. Projecting on each of the vanes, The locking means is provided for holding the vane at a predetermined inclination with respect to the radial direction of the rotor.

[Operation] Even if the rotor is rotated in either the forward or reverse direction, each vane always changes its inclination in the direction opposite to the direction of rotation of the rotor, and in the case of forward rotation, non-return in one fluid conduit A valve blocks the flow of fluid into the pacing and a check valve in the other fluid line blocks the flow of fluid into the common line, causing the fluid in the one fluid line to flow into the common line. Through the opening into the rotor, and is pushed outward by each vane and sent to the other fluid pipe side. Further, in the case of reverse rotation, the check valve switches in reverse to guide the fluid in the other fluid conduit into the rotor via the common conduit and push it outward to send it to one fluid conduit side. Therefore, the fluid receives sufficient motor horsepower in both the forward and reverse directions to flow through.

[Embodiment] In FIGS. 1 and 2, 1 is a casing having a substantially circular shape, and 2 is a rotor arranged at an eccentric position in the casing 1. The rotor 2 has a pair of rotating plates 3a and 3b arranged in front and back with a certain distance therebetween, and an opening 4 is provided at the center of the rotating plate 3a on the front side. .. are formed on the circumferential surface of the rotor 2 at appropriate intervals in the rotation direction, and a suitable number of vanes 6, 6 ... Corresponding to the respective grooves 5, 5 ... The base of the vane 6 is pivotally mounted on the rotor 2 so as to be rotatable in the plane of the rotation direction of the rotor 2, and is located on the line connecting the groove 5 and the center of the rotor 2, and each of the vanes 6, 6 ... .. are provided so as to project outward in the radial direction of the rotor 2. Further, the vanes 6, 6 are held so as to hold the vanes 6, 6 ... With a certain inclination on the edge of the inner wall surface in the front-rear direction in which the vanes 6, 6 of the concave grooves 5, 5 rotate.
The length of 6 is selected, but the length is set so that the vane 6 approaches the inner peripheral surface of the casing 1 on the eccentric side where the rotor 2 comes closest to with almost no gap. In addition, each concave groove 5
Adjustment bolts 7, 7 are respectively screwed into the inner wall of the above so as to be able to move back and forth, and the inclination of each vane 6, 6 can be adjusted by the protruding amount of each adjustment bolt 7, 7. On the other hand, a pair of fluid conduits 8 are provided on the upper wall surface of the casing 1 farthest from the rotor 2.
Form a narrow gap portion 9 through which a and 8b are connected and each vane 6, 6 ... Passes close to the inner peripheral surface of the casing 1 with almost no gap between the fluid pipes 8a and 8b.

A lower end outlet portion 10a communicates with the opening 4 on the front surface of the rotor 2 with almost no gap between them, and an upper end inlet portion 10b, 10
c is a common conduit that communicates with the fluid conduits 8a and 8b, respectively. Further, check valves 11a, 11b are provided in the respective fluid conduits 8a, 8b for switching so that the fluid flows into the common conduit 10 but does not flow directly into the casing 1. 12
Shows a claw piece projecting at the tip of each check valve 11a, 11b for draining the liquid.

13a and 13b are opening / closing valves provided in the respective fluid lines 8a and 8b, and 14
Is a reversible motor connected to a rotary shaft 15 having a front end fixed to a rotary plate 3b on the rear side of the rotor 2.

FIG. 3 shows an example in which the vane pump configured as described above is used in a fiber dyeing device, and a porous pipe 18 established in a branch base 17 in a dyeing tank 16 with a lid that can be hermetically sealed is provided.
Insert the fiber material M into the dye tank and add the dye solution in the dye tank 19 to the dye tank.
The fiber material M is supplied to the inside of the fiber 16 to dye the fiber material M. Reference numeral 20 is a steam pipe for heating the dyeing liquid in the dyeing liquid tank 19, 21 is a liquid supply pipe connecting the dyeing liquid tank 19 and the branch base 17 of the dyeing tank 16, and 22 is a supply pipe provided in the liquid supply pipe 21. Liquid valve, 23 is a vacuum pump,
Reference numeral 24 is a compression pump. When supplying the dye liquor into the dye tank 16, the vacuum pump 23 is connected to the dye tank 16 and the compression pump 24 is connected to the dye tank 19.
Dyeing tank 19 through the liquid supply pipe 21
When it is fed into the dyeing tank 16 and the dyeing liquid in the dyeing tank 16 is returned to the dyeing liquid tank 19, conversely, the compression pump 24 is connected to the dyeing tank 16 and the vacuum pump 23 is connected to the dyeing liquid tank 19. The dyeing liquid is returned from the dyeing tank 16 into the dyeing liquid tank 19 via 21. Reference numeral 25 is a microwave generator having a frequency of 2400 to 2500 MHz, which is a known magnetron oscillator.
Indicate pressure gauges attached to the dyeing tank 16 and the dyeing tank 19, respectively.

Thus, one fluid conduit 8a of the vane pump of the present invention is joined to the lower part of the dyeing tank 16, and the other fluid conduit 8b is joined to the branch base 17. When dyeing the fiber material M by this fiber dyeing device, after supplying the dye material from the dyeing liquid tank 19 into the dyeing tank 16, the liquid supply valve 22 is closed and the opening / closing valves 13a and 13b are opened to drive the vane pump. At this time, the rotation direction of the rotor 2 is switched at regular time intervals. If the rotor 2 is rotated clockwise as shown in the drawing, each vane 6,6 is rotated.
... is pushed in a direction opposite to the rotating direction, and the dyeing liquid is pushed out from the fluid pipe 8b side to the fluid pipe 8a side and sent to the dyeing tank 16.
At this time, the check valve 11b is actuated by the fluid pressure of the dyeing liquid to prevent the dye solution from flowing into the casing 1.
Block the inflow to zero. Then, the dye liquor that has entered the common conduit 10 enters the rotor 2 from the outlet 10a through the opening 4 and is extruded outward by the vanes 6, 6 ... And sent to the fluid conduit 8a side. Further, in the casing, the vane 6 located at the upper end, the inner peripheral surface of the casing 1 and the vane 6 located at the lower end and the inner peripheral surface thereof are close to each other with almost no clearance, so that the dyeing liquid is not delayed. Each vane 6, 6 ... Is forcibly sent out to the fluid pipe 8a side to surely fulfill the pump action. Further, when the rotor 2 is rotated counterclockwise, the vanes 4, 4 ... Rotate to the opposite side due to the rotational force thereof, and the vane 4, 4 ... On the contrary, it is sent to the dyeing tank 16 through the porous tube 18.

At this time, the check valve 11a blocks the inflow into the casing 1, the check valve 11b blocks the inflow into the common pipeline 10, and the dye solution in the fluid pipeline 8a passes through the common pipeline 10. Are guided into the rotor 2 and sent out to the fluid pipe 8b side by the vanes 6,6.

In this way, the dye solution is appropriately made to flow back and forth, whereby the fiber material M
Is dyed evenly from the outside and from the inside. When the necessary dyeing process is completed, the dyeing solution in the dyeing tank 16 is returned to the dyeing solution tank 19 through the liquid supply pipe 21, and then the dyeing tank 16
If the inside is depressurized again, the water impregnated with the fiber material M will evaporate due to low temperature boiling under the depressurized state,
Further, if necessary, the microwave generator 25 is operated to introduce microwaves into the dyeing tank 16 and irradiate the fiber material M, so that the fiber material M is uniformly heated and dried.

[Effects of the Invention] In both forward and reverse rotations of the rotor, a sufficient fluid output can be obtained, so that not only reversible flow of fluid is possible, but also energy efficiency can be improved. Therefore, it is most suitable for applications requiring a reversible flow of fluid, such as a case where the bundled fiber material is to be dyed uniformly from the inside and the outside.

[Brief description of drawings]

The drawings relate to an embodiment of the vane pump of the present invention,
FIG. 1 is a front sectional view, FIG. 2 is a transverse sectional view, and FIG. 3 is a state of use. 1 ... Casing, 2 ... Rotor, 3a, 3b ... Rotating plate,
4 ... Opening, 6 ... Vane, 8a, 8b ... Fluid line, 10 ...
… Common lines, 11a, 11b …… Check valves.

Claims (1)

[Claims] 1. A reversible rotatable rotor comprising a pair of rotating plates arranged in front and back at a fixed interval in a substantially circular casing having two fluid pipes connected to the upper portion, An opening is provided in the center of the rotary plate on the front side of the rotor, a lower end is connected to the opening, and an upper end is connected to the two fluid conduits. A common conduit is provided in each of the fluid conduits. A check valve for switching the flow of fluid into the inside or the flow of fluid into the common conduit is provided, and an appropriate number of vanes are provided at appropriate intervals in the circumferential direction of rotation of the rotor within the plane in the direction of rotation of the rotor. And a locking means for holding the vanes with a predetermined inclination with respect to the radial direction of the rotor at the front and rear positions in the rotation direction of each vane. Vane pump.