JPH11315796A - Rotary vane apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce magnetic attraction between magnets so as to facilitate removal of the rotary vane from the shaft, by arranging thread direction of the male screw member fixed at one of drive shaft ends closer to the driven shaft, so that the nut portion advances toward the partition wall when the drive shaft rotates in the driving direction. SOLUTION: After a clamp 26 is disengaged and a casing 25 is removed, a wrench hooked portion 30 of a male screw 3 is tightened with a wrench such that the male screw 3 does not turn. A rotary vane 16 is turned reverse by hand with the male screw 3 maintained. To follow this, a driven side magnet 20 also rotates, then this rotary force turns the driving side rotating body 7 via the magnetic attraction with a driving side magnet 10. Then the driving side rotating body 7 is moved away from a partition wall plate 11 guided by the thread of the male screw 3. As a result, the magnetic attraction is reduced. Accordingly, removal of the rotary vane 16 from the shaft is facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary pump device in a magnet pump and a magnet stirrer (stirrer) using a magnet as a means for eliminating a shaft seal (mechanical seal or the like).

[0002]

2. Description of the Related Art In general, a magnet pump or a magnet stirrer has a structure in which a driving magnet and a driven magnet are opposed to each other with a partition plate therebetween, and the driven magnet is rotated by a magnetic force generated when the driving magnet is rotated. Is rotated to perform a pumping action and a stirring action.

[0003] When the work of the magnet pump or the like is to be increased, the magnetic force of the magnet is inevitably increased accordingly. For this reason, it is necessary to remove the rotating blade from the shaft, for example, during disassembly and cleaning. In the case where the problem occurs, there has been a problem that it becomes hard to remove due to an increase in magnetic force.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a novel rotary blade device which sufficiently solves the above problems.

[0005]

In order to achieve the above object, a rotary blade device according to the present invention comprises a drive shaft, a partition plate fixed via a support member in a direction orthogonal to a center axis of the drive shaft, and A driven shaft rotatably mounted on the partition plate on the center axis, a male screw member fixed to the end of the drive shaft closer to the driven shaft so as not to rotate, and a male screw member having the center of the male screw member A driving-side rotating body fixed via a nut portion screwed into the rotating shaft, a rotating blade detachably mounted on the driven shaft and fixed as non-rotatable, and facing the driving-side rotating body and the rotating blade with a partition plate interposed therebetween. A drive-side magnet and a driven-side magnet fixed with a clearance as small as possible between itself and the partition plate, and the screw direction of the male screw member is rotated in the drive direction of the drive shaft. Nut portion when it is obtained by the direction of travel toward the partition plate.

[0006]

In the embodiment shown in the drawings, a male screw member 3 is fixed to the end of a drive shaft 2 of a motor 1 so as to be non-rotatable with a screw 4 and a key 5, and a disk-shaped nut member 6 is fixed to the male screw member 3. A driving-side rotating body 7 having a ring shape is screwed and fixed to the nut member 6 with a screw 8 or the like, and a recess 9 is provided on an outer surface of the driving-side rotating body 7 so that the driving-side magnet is formed in the recess 9. 1
And the partition plate 11 is disposed outside the drive-side magnet 10, that is, outside the drive-side rotating body 7, and the partition plate 11 is supported on the outer casing 12 of the motor 1 by a support member 13. Thus, when the nut member 6 is located at the outer end of the male screw member 3, the outer surface of the drive-side magnet 10 is fixed so as to approach the partition plate 11, and a bearing 14 is provided at the center of the partition plate 11. The driven shaft 15 is rotatably supported on the bearing portion 14 on the same axis as the drive shaft 2 of the motor 1, and the rotating blade 1 is mounted on an outer portion of the driven shaft 15.
6 is fixed so as to be non-rotatable and detachable by a detachable pin 17, and a recess 19 is provided at a position corresponding to the drive-side magnet 10 in the hub 18 of the rotary blade 16, and the driven-side magnet 20 is driven by the recess 19. The driven magnet 20 is fitted to the cover member 21 and the screw 2.
2, a casing 25 having a suction port 23 and a discharge port 24 is arranged in a state surrounding the rotary blade 16 and the outer peripheral edge of the casing 25 is fixed to the support member 13 by the clamp 26 using the clamp 26. When the drive-side rotating body 7 is rotated by the rotation of the drive shaft 2 of the motor 1, the rotational force of the driven-side magnet 10 is attracted by the drive-side magnet 10. The rotating blades 16 rotate together with the rotating blades 20. In the drawing, reference numeral 27 denotes a lock nut, 28 denotes a bearing, 29 denotes a packing, and 30 denotes a spanner hook provided on the male screw member 3.

In the above-mentioned embodiment, when disassembling this for cleaning, for example, first, the clamp 26 is removed and the casing 25 is removed, and then a spanner (not shown) is hooked on the spanner hook 30 of the male screw member 3. Male screw member 3
Is held so as not to rotate, and in this holding state, the rotating blades 16 are manually turned in the opposite direction (the direction in which no pump action is performed).
Then, the driven side magnet 20 also rotates, and its rotational force rotates the driving side rotating body 7 through the attraction force with the driving side magnet 10, and this driving side rotating body 7 The suction force is weakened by being moved away from the partition plate 11 by the guide, and the rotating blades 16 and the like may be removed when the weakening force is reduced. When the reassembly is performed after cleaning, the rotating blades 16 and the like are driven. The rotating blade 16 is rotated in the positive direction (the direction in which the pumping action is performed) while being attached to the shaft 15 and then held by the wrench as described above. Then, the driven magnet 20 is also rotated, and the rotational force is reduced. The drive-side rotator 7 is rotated by an attractive force with the drive-side magnet 10, and the drive-side rotator 7 is
The drive side magnet 10 comes close to the partition plate 11 by the guide of the screw (3), and the close state is fixed by the lock nut 27, and the casing 25 may be attached after the fixation.

[0008]

Since the rotary blade device according to the present invention has the above-described structure, if the rotary blade is difficult to be removed from the shaft due to the large magnetic force of the magnet, the rotary blade device is as described in the above embodiment. By turning the rotating blade by hand in a state where the rotation of the drive is blocked by a spanner after removing the proper casing, the drive side magnet is moved away from the driven side magnet to weaken the attraction force between these magnets, and the rotation in this weak state The operation of detaching the blade from the shaft can be easily performed, and when reassembling, the rotating magnet is manually turned so that the drive-side magnet 1 is turned.
0 can be easily returned to a state close to the partition plate, and has a remarkable effect of sufficiently achieving the intended purpose.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Motor 2 Drive shaft 3 Male screw member 4 Screw 5 Key 6 Nut member 7 Drive side rotating body 8 Screw 9 Depression 10 Drive side magnet 11 Partition plate 12 Outer case 13 Support member 14 Bearing 15 Follower shaft 16 Rotating blade 17 Detachable pin 18 Hub 19 Depression 20 Follower magnet 21 Cover member 22 Screw 23 Suction port 24 Discharge port 25 Casing 26 Clamp 27 Lock nut 28 Bearing 29 Packing 30 Spanner hook

Claims (1)

[Claims] 1. A drive shaft, a partition plate fixed via a support member in a direction orthogonal to a center axis of the drive shaft, a driven shaft rotatably supported on the partition plate on the center axis, and a drive shaft. A male screw member fixed to the end nearer to the driven shaft as non-rotatable, a drive-side rotating body fixed to the male screw member via a nut portion screwed into the male screw member at the center, and a driven shaft. With the rotating blade fixed as detachable and non-rotatable, and with the driving-side rotating body and the rotating blade leaving as small a clearance as possible between the partition plate and the opposing portion across the partition plate. A fixed drive side magnet and a driven side magnet are provided, and the direction of the screw of the male screw member is set to the direction in which the nut portion advances toward the partition plate when the drive shaft rotates in the drive direction. Rotating feather Root device.