JPS59203618A - Magnetic separator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a Vt-made or purifying device for V-tech fluid, and a magnetic separator for separating ferromagnetic particles from the fluid.

The present invention can be used in a number of industries including chemistry, dynamics, metallurgy, general engineering, and the like. In particular, fluids such as ammonia, aqueous ammonia, various alkalis and condensates, recirculated water, lubricating oils, steam, various fluids generated from corroded equipment, equipment, machine parts, and mechanical and thermal processing processes. It is useful when purifying fluids etc. generated from

2. Description of the Related Art Various types of magnetic separators have been known that remove ferromagnetic particles by passing a fluid containing ferromagnetic particles through a separation chamber provided with a magnetization device. , for example Soviet Union Inventor's Certificate No. 921.628 (1,9
(published on April 23, 1982) (/C has a cylindrical passing fluid separation chamber with a filter backing or grid made of ferromagnetic material arranged on the inner circumference, and a magnetization device is attached to the axis of the separation chamber. A magnetic separator is disclosed in which the separator's magnetizing device comprises an electromagnetic coil wound on a magnetic core, which together with a filter backing or grid made of ferromagnetic material constitutes a closed magnetic field. 1ζ1 (The vessel is in the regeneration period (regene)
During the ratio pcrioCl), means are provided to disturb the magnetic field or flux by actuating a 'mu- nic switch which has the function of demagnetizing the coils of the magnetizer.

The conventional devices mentioned above do not contain electromagnets during operation of the device. Since it requires a lot of energy, it can become difficult to use when power consumption increases.

It is an object of the present invention to have the ability to magnetize a filter backing or grid made of ferromagnetic material when the device is in operating mode, i.e. during fluid purification, and to demagnetize it when in regeneration mode; The object of the present invention is to provide a magnetic separator with minimal consumption.

The above object is to provide a passing fluid separation chamber with a filter backing or grid made of ferromagnetic material, and a magnetizing device having a magnetic core which together with the filter backing or grid made of ferromagnetic material constitutes a closed magnetic field. This can be achieved by the present invention, in which the magnetic separator J6 has some means for interfering with the magnetic field, and at least a portion of the magnetic core is constituted by a permanent magnet.

Advantageously, the separator according to the invention requires no electrical power when in the operating mode, since permanent magnets are used to magnetize the backing or grid. on the other hand,
By introducing backing, i.e. means of circumferentially obstructing the magnetic field or flux in the area in which the grid is located,
These backings or gratings can be demagnetized at any time. By temporarily interrupting the ability to retain trapped particles in this manner, efficient cleaning can be achieved with a relatively small amount of cleaning effort.

In carrying out the invention, it is preferred that the entire magnetic core be constructed by permanent magnets in order to build up maximum magnetizing forces in the separator.

The present invention has been achieved by forming one permanent magnet VC with a magnetic core, and including a series connection circuit of a current pulse generator, a current direction reversal device, and an electromagnetic coil as a means for periodically interrupting the magnetic field, and the above-mentioned. The magnetic core of the electromagnetic filter is magnetic! : (is a part of the magnetic core of The calculated ampere-turn value is set so that the electromagnetic coil is turned on for the required amount of time to clean the backing, i.e., the particles trapped in the lattice. The permanent magnet can be remagnetized when the separator enters an operating mode.

Another means of periodically interrupting the magnetic field is to slide part of the magnetic core consisting of a permanent magnet in the axial direction of the passing fluid separation chamber, or to rotate it around the axis. You can also read it.

The magnetic separator constructed according to the present invention as described above is
Economically, it can be supplied at a very low cost, has a simple structure, and has very high operational reliability.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

The magnetic separator shown in FIG. 1 has a cylindrical passing fluid separation chamber 1.
In the separation chamber, there are arranged ferromagnetic parts A'' or gratings 2 made of ferromagnetic materials in the shape of a large number of spheres, flakes, or ll+.Separation chamber 1
An inner cylinder 3 is provided inside and coaxially with the inner cylinder 3, and further inside the inner cylinder 3, a permanent magnet 5 (a plurality of magnets may be used) and a magnetic core 6 (permanent magnet) of ferromagnetic material are provided. A magnetizing device 4 comprising an electromagnetic coil 7 (which may be a magnet) and an electromagnetic coil 7 wound with VC around it.
will be provided. In this embodiment, the permanent magnet 5, the magnetic core 6 of the electromagnetic coil, and the backing 2 made of ferromagnetic material constitute a closed magnetic field. The current direction inverter 8 and the current pulse source 9 serve to send current pulses to the electromagnetic filter 7 and together with the electromagnetic coil 7 form a series of electrical circuits. Electromagnetic coil 7
has an ampere cycle value calculated so that the generated magnetic flux is substantially equal in magnitude to the inherent magnetic force of the permanent magnet 5, so the magnetic force of the permanent magnet 5 can be canceled by the electromagnetic filter 7. reactor.

The connecting pipe 10 is the inlet of the fluid to be purified into the main separator, and the connecting pipe 11 is the outlet of the purified fluid.

The magnetic separator shown in Figures 2 to 4 generally has a
Similar to the separator shown in the figure, the magnetizing device 12 of this separator has a permanent magnet 13 as part of the magnetic core, which permanent magnet 13 is firmly fixed to the inner surface of the inner cylinder 3. The difference is that the ferromagnetic plate 14VC is attached so as to be movable relative to the ferromagnetic plate 14VC. The contact surface between the permanent magnet 13 and the plate 14 is a flat surface or a curved surface, for example, a cylindrical or tapered curved surface as shown in FIGS. 3 and 4.

The actuator 16 with the electric motor 617 is periodically slid along the axis of the separator until the permanent magnet 13 is completely moved away from the plate 14 (in the dashed line position in FIG. 2), or permanently The plate 14 is also isolated by rotating the magnet 13 in the axial direction of the separator (FIG. 4).

This separator operates as follows. In the separator of FIG. 1, no current is allowed to flow through the electromagnetic coil 7, while in the separator of FIG. magnetize it and flow a fluid through it.

Once the backing or grid 2 becomes saturated with trapped magnetic particles, fluid flow is discontinued. In the separator shown in FIG. 1, the current pulse source 9 is turned on.
Then, a magnetic field is generated in the electromagnetic coil 7, the magnitude of which is essentially equal to the unique magnetic force of the permanent magnet 5, and the direction of the magnetic flux is opposite, thereby canceling out the magnetic force of the permanent magnet 5. Similarly, the second
In the illustrated separator, the permanent magnet 13 is slid or rotated by the actuator 16 to cut off the closed magnetic field. In either case, the backing or lattice is demagnetized so that trapped particles can be washed away by flowing a liquid or liquid/gas mixture.

Once the cleaning has been completed, the separator is placed into operating mode again by remagnetizing the permanent magnets 5, 13. In the separator of Figure 1, this remagnetization is achieved by reversing the direction of the current by sending current pulses thicker than the pulses sent from the controllable current pulse source 9 to the electromagnetic coil 7 for demagnetization. This is accomplished by reversing the direction of the current and sending it through the device 8. On the other hand, in the separator shown in FIG. 2, this remagnetization is achieved by returning the permanent magnet 13 to the corresponding position of the contact surface 15 with the plate 14 by means of the working tool 16 and forming a closed magnetic field again. By configuring the permanent magnets 5 (1mth) and 13 (2F', Fig. 2) as part of the magnetic core or closed magnetic field of the separator, the separator according to the present invention has is capable of magnetizing the backing or grating 2 without consuming any power. In the separator of FIG. Electric power is consumed, and in the separator of FIG.
Power is consumed only when performing mechanical rotation. Of course, the actuator can also be configured in other ways, such as for example manually, hydraulically or pneumatically. In this way, power consumption can be minimized or eliminated.

It should also be noted that the magnetic separator of FIG. 2 is highly suitable for use in environments where there is a risk of explosion, such as when handling ammonia products. This is because it is much easier to find and install a suitable off-the-shelf explosion-proof electric motor than to specially design and manufacture a spark- and explosion-proof electromagnetic coil.

[Brief explanation of the drawing]

FIG. 1 is a schematic sectional view of a magnetic separator according to the present invention in which the magnetizing device has a permanent magnet and an electromagnetic coil, and FIG. 2 shows a magnetizing device in which the magnetizing device has a permanent magnet and the permanent magnet is rotated or A schematic cross-sectional view of a magnetic separator according to the present invention in which a sliding force is integrated; FIG. 3 is an operation diagram showing the separator shown in FIG. 2 in an operating mode in which a closed magnetic field is configured; FIG. 4 is an operation diagram showing a state in which the closed magnetic field is cut off because the permanent magnet is rotated in the separator shown in FIG. 2. DESCRIPTION OF SYMBOLS 1... Passing fluid separation chamber, 2... Filter backing or grid, 3... Inner cylinder, 4... Magnetizer, 5...
Permanent magnet, 6. Magnetic core of electromagnetic coil, 7. Electromagnetic coil, 8. Current direction inverter, 9. Current pulse source, 10
, 11...Connection vibe for fluid extraction, 12...Magnetizing device, 13...Permanent magnet, 14...Plate, 15...Contact part, 16...Action element, 17...Electric morph.

Claims (1)

[Scope of Claims] 1. A passing fluid separation chamber containing a filter backing or grid made of ferromagnetic material, a magnetizing device having a magnetic core forming a closed magnetic field together with the filter backing or grid made of ferromagnetic material; 1. A magnetic separator having some means for interfering with a magnetic field, characterized in that at least a portion of said magnetic core consists of a permanent magnet. 2. The magnetic separator according to claim 1, wherein all of the two magnetic cores are made of permanent magnets. 3. the means for interfering with the magnetic field is achieved by comprising a series connection circuit of a current pulse source, a current direction reversal, and an electromagnetic coil, and the magnetic core of the electromagnetic field is part of the magnetic separator core, and A patent claim characterized in that the electromagnetic filter has a pair number value calculated such that the magnetic flux generated when a current is passed through the electromagnetic filter is substantially equal in magnitude to the inherent magnetic force of a permanent magnet. The magnetic separator according to item 1. Claim 3, characterized in that the closed magnetic field is cut by attaching a part of the four magnetic cores so as to slide in the axial direction of the passing fluid separation chamber or to rotate around the axis. Magnetic separator.