CN2740861Y - Permanent magnetic torque force valve operating mechanism with unbalanced positive and negative magnetic torque forces - Google Patents

Abstract

The utility model discloses a permanent magnetic torque force valve operating mechanism with unbalanced positive and negative magnetic torque forces. A permanent magnetism magnetic coupler is arranged at the position of a conventional valve hand wheel. The permanent magnetism magnetic coupling is composed of an inner and an outer magnetospheres which are coaxial and an isolation cylinder between the inner and the outer magnetospheres. The isolation cylinder completely seals the inside of the valve and the inner magnetosphere of the permanent magnetism magnetic coupler from the outside. The outer magnetosphere is composed of an upper magnetosphere, a lower magnetosphere and a ratchet between the upper magnetosphere and the lower magnetosphere, wherein the ratchet can be slipped when the rotated hand wheel rotates forwardly. Therefore, the inner magnetosphere can just be rotated and driven by the upper magnetosphere, and the valve can be closed by the operation of a valve stem. The lower magnetosphere can rotate with the upper magnetosphere together to drive the operation valve stem in the inner magnetosphere to make the valve open because of the self-lock of the ratchet teeth if the rotated hand wheel rotates reversely. The arrangement can make the magnetic torque moment when the reversed operation valve opens greater than the magnetic torque moment when the forward operation closes. Thus, the open reliability of the valve can be ensured.

Description

The permanent magnetism magnetic torsion valve operating mechanism that forward and reverse magnetic torsional moment does not wait

Described technical field

The utility model belongs to the opening and closing operations mechanism of magnetic torsion valve.The magnetic torsion valve operating mechanism that uses forward and reverse magnetic torsional moment not wait, realize valve do not have leak outside in since oppositely the magnetic torsional moment of Open valve when closing the magnetic torsional moment and can guarantee the reliable unlatching of valve.

Background technique

The switching mechanism of prior art is made of two that are nested together concentric permanent magnetism magnetospheres, and Fig. 2 is a kind of of former mechanism, and wherein 7 is outer magnetic ring, and 5 is interior magnetosphere.Magnetosphere will be followed the outer magnetic ring rotation in when outer magnetic ring rotates with respect to interior magnetosphere, and promptly the running torque of outer magnetic ring passes to interior magnetosphere by magnetic field, thus magnetosphere rotation in making.For fixed above-mentioned two magnetospheres of structure, the moment of transmitting between them has a maximum value of determining, surpasses after this maximum value, promptly occurs skidding between the interior outer magnetic ring.No matter outer magnetic ring is to be rotated in the forward or counterrotating with respect to interior magnetosphere, and above-mentioned maximum moment value is same numerical value.Outer magnetic ring operation handwheel total and valve links in magnetic torsion valve, valve was closed when the operated valve handwheel was just changeing, open during counter-rotating, because its value was all the same when there was maximum value in magnetic moment and is just changeing counter-rotating, the magnetic torsional moment maximum value that can use when this just means magnetic torsion valve opening and closes equates.Therefore, when throttle down, used the maximum magnetic flux torsional moment, just often the not enough situation of moment has taken place when then opening, valve can not reliably be opened.The technology of using the utility model to provide promptly can overcome the disadvantage of not opening sometimes behind the valve closing of prior art existence.

Summary of the invention

The valve operating mechanism of use the utility model technology as shown in Figure 1, wherein cylindric outer magnetic ring is made up of last magnetosphere 7, ratchet 6, following magnetosphere 5,9 is cylindric interior magnetosphere, the 8 beaker shape shielding cans of making for nonferromagnetic material, shielding can is like the inversion of beaker, and tightly, interior magnetosphere 9 is within shielding can by seal ring 3 and valve body 2 usefulness bolts for its peristome, outer magnetic ring is outside shielding can, and interior outer magnetic ring and shielding can are formed the cartridge type permanent magnetism magnetic coupler device.When make outer magnetic ring when rotation by handwheel 10, rotation is followed in interior magnetosphere 9 magnetic field force induced effects, drives that the valve rod on the magnetosphere 4 rotates in being connected, and valve rod just makes its lower end by the flap 1 of screw thread couple or rise or fall, the nothing that the realizes valve switching that leaks outside.Because outer magnetic ring is made up of last magnetosphere 7, ratchet 6, following magnetosphere 5.And ratchet 6, down magnetosphere 5 is with respect to last magnetosphere can freely pivot (for example postive direction), if during the rotation of last magnetosphere 7 postive directions of outer magnetic ring is at throttle down, and ratchet 6 just is in forward sense of rotation at this moment, promptly descend magnetosphere 5 can not follow magnetosphere 7 rotation, have only then that magnetosphere 9 generation effects make valve closing in 7 pairs of the last magnetospheres this moment.When the last magnetosphere 7 of opposite spin outer magnetic ring, ratchet 6 will be in the counter-rotating direction, promptly can make the following magnetosphere 5 of outer magnetic ring follow magnetosphere 7 rotations, the internally magnetosphere generation effect simultaneously of upper and lower magnetosphere this moment, and the moment that has strengthened counterrotating makes valve opening.The available magnetic torsional moment of the maximum magnetic flux torsional moment that can use when this just illustrates Open valve during greater than throttle down guaranteed that the unlatching of valve is reliable, solved the problem that can not reliably open behind the valve closing that prior art exists.

Description of drawings

Fig. 1 is valve operating mechanism figure of the present utility model

Part name is as follows among Fig. 1: 1. magnetosphere 10. handwheels in magnetosphere 8. shielding cans 9. on 5. times magnetospheres of flap 2. valve body 3. seal rings, 4. valve rods, 6. ratchets 7.

Fig. 2 is existing a kind of valve operating mechanism

Part name is as follows among Fig. 2: 1. magnetosphere 6. shielding cans 7. outer magnetic rings 8. handwheels in flap 2. valve bodies 3. seal rings 4. valve rods 5.

Embodiment

The valve operating mechanism embodiment of the utility model technology as shown in the figure.Its structure and working principle illustrate in summary of the invention that this kind operating device can guarantee that valve does not have external leakage; Because the magnetic torsional moment of the magnetic torsional moment during Open valve during greater than throttle down guaranteed that the unlatching of valve is reliable.

Claims (1)

1. permanent magnetism magnetic torsion valve operating mechanism that forward and reverse magnetic torsional moment does not wait, it is characterized in that: shielding can is made by Nonferromugnetic material, shape is inverted like beaker shape, its peristome uses bolton on the flange of valve body by seal ring, shielding can and valve body with bolted sealed valve body in, magnetosphere links to each other with valve rod in the tubular, and valve rod and flap are for being threaded; The outside handwheel of valve body and tubular outer magnetic ring are formed one, and the tubular outer magnetic ring outside the shielding can is made up of the ratchet between upper and lower magnetosphere and the upper and lower magnetosphere.

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