JP2000274600A - Transfer method of liquid body, its device and force feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transfer method of a liquid body high in energy saving and in safety, its device and a force feeder. SOLUTION: A pig stopping in a pig receiver 3 is fed back to the side of a pig dischager 1 from the pig receiver 3 through a piping 2 by using pressure gas G after the pig discharged from the pig discharger 1 by using the pressure gas G receives magnetic paint 5 residing in the piping 2 and pushes it to the side of a tank 51. Consequently, it is not necessary to extract the pig out of the piping each time, and the pig can reciprocate in the piping 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for transferring liquids for transferring various liquids, a transfer apparatus suitable for the transfer, and a pressure feeder used for the apparatus.

[0002]

2. Description of the Related Art As a magnetic recording medium such as a video tape, an audio tape, a magnetic disk or the like, a magnetic paint (hereinafter, may be referred to as a paint) prepared by dispersing ferromagnetic particles in a binder. A so-called coating type magnetic recording medium having a magnetic layer coated and formed on a non-magnetic support is widely used in view of its versatility and productivity.

[0003] In the process of producing a magnetic coating material used for these magnetic recording media, an organic solvent is added to a kneaded product obtained in a kneading step of kneading a binder containing an organic solvent solution with a magnetic powder or the like. It comprises a dilution step of diluting the kneaded material and a dispersion step of subjecting the diluted product obtained in this dilution step to a dispersion treatment.

A magnetic recording medium such as a magnetic tape has a structure in which a magnetic layer is formed on the surface of a base film. The magnetic layer is obtained by mixing a hardener and a lubricant with a dispersion paint in which magnetic particles are dispersed. In the case of a tape, the mixed magnetic paint is applied to the surface of the base film, dried, and then formed through a calendering process and a slitting process.

FIG. 4 is a schematic diagram showing a preparation step and a transfer step in the above-mentioned magnetic paint production step.

[0006] In the preparation step 56 of the magnetic paint, first, a kneaded material 41 composed of a magnetic powder, a binder and other additives is diluted by a mixer 43 while adding an organic solvent in a premix tank 42.

[0007] The diluent 44 diluted in the premix tank 42 is transferred to a kneader (or disperser) 45 via a transfer pipe, and a motor is provided in the kneader (for example, a twin-screw kneader / mixer) 45. The kneading (dispersion) process is performed by rotating the shaft 46 by 47.

Next, the mixture 48 subjected to the dispersion treatment is transferred to a storage tank 49 via a transfer pipe, and further mixed in the storage tank 49 by a mixer 50.

Magnetic paint has structural viscosity (thixotropic property)
Is a viscous paint having the following structure: its structure is easily changed with time (for example, gelling), and its magnetic properties are easily changed. Is for outdoor piping (size 1.5 ~
In many cases, the sheet is transferred to a receiving tank 51 in a post-processing step (coating step or the like) 55 which is 100 to 500 m away through the (about 3 inches) 2. In the receiving tank 51, the paint is mixed by a mixer 57.

The magnetic paint 5 in the receiving tank 51 is guided to a coating device or the like (not shown) and is subjected to a predetermined process. As described above, the magnetic recording medium having a magnetic layer on a non-magnetic support is provided. Provided for the manufacture of

However, when the paint is transferred through the pipe, paint residue is generated in the pipe. Therefore, the applicant of the present invention disclosed in FIG. 5 in Japanese Patent Application No. 9-114661 (filed on May 2, 1997). Although a transfer method applying the transfer principle using a pig as shown is proposed, there is a problem that pressurized gas enters the receiving tank together with the paint.
No. 137824 (filed on May 20, 1998) proposes improvement of the pig and improvement of the pig stopping device and the discharge mechanism of the pressurized gas (hereinafter referred to as the prior invention) as an improvement measure. I have.

FIG. 6 is a schematic view showing a part of the paint transfer process in FIG. 4 using the prior invention, and the transfer principle is the same as that of the above-mentioned Japanese Patent Application No. Hei 9-114661.

That is, when the paint 5 is transferred from the storage tank 49 to the receiving tank 51, the valves V1 and V2 are opened,
The valves V3 and V5 are closed, and the paint 5 in the storage tank 49 is transferred to the receiving tank 51 by the pump 4. However, when the paint 5 in the storage tank 49 becomes empty, the pump 4 sucks air and reaches the limit of the transfer, so that the paint 5 remains in the pipe 2 downstream of the pump 4.

Therefore, this time, the pig 52 is inserted into the pig launcher 1, the valves V2 and V3 are opened, the valve V1 is closed, the valve V4 is opened, and a pressurized gas such as nitrogen is introduced into the pig launcher 1. Inject G. As a result, the pig 52 is pushed by the pressurized gas G and slides in the pipe 2, and the pig 52 is moved to the pig receiver 53. Therefore, the paint 5 remaining in the pipe 2 is pushed out to the pig 52, and the valve V2 and the pipe 5
4 and enters the receiving tank 51.

On the other hand, the pig 52 is received by the stopper 30 shown in FIG. 3 in the pig receiver 53, and at the same time, the valve V5 is opened and the pressurized gas G is discharged to the outside, so that it does not enter the receiving tank 51. After the gas G remaining in the pipe 2 is discharged, the pig 52 is taken out from the pig receiver 53 and is used again for the next transfer.

[0016]

However, it has been found that the prior invention has excellent features such as not deteriorating the magnetic properties of the magnetic paint, but there is still room for improvement.

That is, after the paint is transferred, it takes time to take out the pig from the pig receiver 53, and the pig 52 taken out must be conveyed to the pig launcher 1 manually. .

When the pig receiver 53 is opened to take out the pig 52, the paint 5 adhering to the inner wall of the pig receiver 53 flows out or the pressurized gas G is completely removed. If there is a residual pressure, the paint 5 inside blows out and scatters around the pig receiver 53, and there is a danger that the paint 5 will also blow to the operator.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method and apparatus for transferring a liquid material which is labor-saving and highly safe, and a pumping tool.

[0020]

That is, according to the present invention, there is provided a method for transferring a liquid material existing in a pipe to a liquid container by sliding a pressure-feeding device arranged in the pipe with a pressure medium. Wherein the liquid material is returned to its original position without removing the pressure-feeding tool after the liquid material is transferred (hereinafter, referred to as a transfer method of the present invention).
It is related to.

According to the present invention, after the liquid material is transferred, the pump is returned to the original position without removing the pump, so that it is not necessary to remove the pump from the pipe and transport the pump to the original position, thereby saving labor. be able to. As a result, there is no danger of outflow of the liquid material adhering to the inner wall of the pipe or the like, and even if the residual pressure of the pressure medium exists in the pipe, there is no danger of blowing out the liquid material and scattering the liquid material.

Further, the present invention provides a transfer device configured to slide a pressure-feeding tool disposed in a pipe by a pressure medium in order to transfer a liquid material existing in the pipe to a liquid material storage section. A liquid material transfer device (hereinafter, referred to as a transfer device of the present invention), comprising means for returning the pressure feeder to the original position without removing the pressure-feeding tool from the end point of the liquid material transfer. It is related.

According to the transfer apparatus of the present invention, which is based on the above-described transfer method of the present invention, it is possible to provide a transfer apparatus having good reproducibility and having the same effects.

The present invention also provides a pressure-feeding tool which slides in a pipe by a pressure medium in order to transfer a liquid material existing in the pipe to a liquid material storage section. The present invention relates to a pressure-feeding device for transferring a liquid material (hereinafter, referred to as a pressure-feeding device of the present invention) having an inner diameter larger than that of the pressure-feeding device.

According to the pressure-feeding device of the present invention, the front and rear diameters of the pressure-feeding device are larger than the inner diameter of the pipe, so that when the pressure-feeding device reciprocates in the pipe, the pressure-feeding device is stable without tilting. At the same time, the degree of close contact of the pumping tool with the inner wall of the pipe is increased, and leakage of the liquid material can be prevented.

Here, the "pumping tool" is a member that can be slid in close contact with the inside of the pipe and can be transferred (pressurized) while pushing out the liquid material.
This means sending out the liquid material in a predetermined direction while applying a predetermined pressure, and is a concept including transfer at a high pressure and a high speed.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the above-described transfer method, transfer apparatus and pressure-feeding device of the present invention, as shown in FIG. 1, after the pressure-feeding device is stopped at an end point (for example, a receiver 3) of the liquid material transfer. , The pressure-feeding device is connected to a pressure medium
Therefore, it is desirable that the inside of the pipe 2 be slid in the opposite direction to return to the starting point (for example, the launcher 1) of the transfer of the liquid material.

For this purpose, as shown in FIG. 1, it is desirable that an introducing means for introducing the pressure medium is connected to the start point and the end point in order to slide the pressure feeding device.

Then, it is desirable that the sliding of the pressure-feeding tool to the end point, the return to the starting point, and the re-sliding after the double-acting are performed under automatic control, thereby enabling unmanned operation. become.

For this purpose, it is desirable to stop the pressure-feeding tool at the end point and to provide a sensing means (for example, the proximity sensor 17 shown in FIG. 1) for detecting the stop.

Then, as shown in FIG.
It is desirable to make the diameter of the front part 13 and the rear part 14 larger than the inside diameter of the pipe 2 and to form the front part and the rear part in a spherical shape, respectively, in order to improve the slidability.

Further, as shown in FIG. 2, a proximity sensor 17 as the sensing means is provided at the end point shown in FIG. It is desirable to operate the valve V6 for discharging the pressure medium according to the detection information of the above.

In this case, as shown in FIG. 1, it is desirable to provide a tank 9 for storing the discharged pressure medium, and to discharge the pressure medium to the outside via the tank 9.

As shown in FIG. 1, a pressure detector 19 is provided in the vicinity of the end point, and a pressure medium passing through the storage tank 9 is obtained based on detection information on the pressure in the pipe 2 by the pressure detector 19. It is desirable to control the discharging operation of the gas.

It is desirable to use an inert pressurized gas as the pressure medium.

It may be desirable for the cleaning and inspection of the piping to be configured so that the pressure feeder can be removed from the end point after the liquid is transferred to the liquid container.

With the above configuration, the magnetic paint for a magnetic recording medium can be suitably transferred.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic view showing a step of transferring a magnetic paint according to the present embodiment. Note that the same reference numerals are used for the portions common to the conventional example.

As shown in FIG. 1, the configuration is similar to that of FIG. 6 described above, but the feature of this embodiment is that the shape of the pig 11 suitable for reciprocation and the gas And a gas discharge mechanism via the gas storage tank 9 is provided. However, the transfer form of the paint by the pig 11 is the same.

That is, the valve V3 is closed and the valves V1, V
2 is opened, and after the paint 5 is transferred by the pump 4, the valve V1 is opened.
Is closed, the valve V3 is opened, the pig 11 is put into the pipe 2 in which the paint 5 is retained, and a pressurized gas G is introduced from behind the pig 11 to apply a pressure (about 0.3 MPa). The pig 11 is pushed by the pressure and moves in the pipe 2, and the paint 5 remaining in the pipe 2 is extruded and enters the receiving tank 51.

However, the transfer device 10 of the present embodiment
As described above, the connection pipe 20 is also connected to the pig receiver 3 side, the valve V5 is provided, and the pressurized gas G can be introduced by the gas introduction mechanism (not shown). And the valve V4 and the like.

Therefore, both the pig launcher 1 and the pig receiver 3 have the function of launching the pig 11, and the pig receiver 3 is provided with the proximity sensor 17 in order to detect the arrival of the pig 11.
The pig launcher 1 is provided with a proximity sensor 18.

The pig 11 used in the transfer device 10 is as follows.
As shown in FIG. 2, the front part 13 and the rear part 14 are formed in a spherical shape by expanding the diameter of the front part 13 and the rear part 14 more than the intermediate part 12, and the outer diameter of the spherical part is 102 to 106% larger than the inner diameter of the pipe 2. Is good. The material of the pig 11 is preferably a solvent-resistant rubber such as silicon and ethylene propylene,
This is because, as shown in FIG. 3, the pressure received from the inner surface of the pipe 2 elastically deforms the original shape indicated by the imaginary line and easily adheres to the inner surface. With such a shape and material, the pig 11 slides in close contact with the inner surface of the pipe 2 at the front portion 13 and the rear portion 14, respectively. Slide.

In order to make it easier for the proximity sensors 17 and 18 provided in the pig receiver 3 and the pig launcher 1 to detect the arrival of the pig 11, both ends of the pig are spherical and the intermediate portion 12 is formed.
The ring-shaped magnet 15 is buried in the cylindrical interior 12a. The diameter of the magnet 15 is 70 to 85% of the outer diameter of the intermediate portion 12, the thickness is 5 to 15 mm, and the magnetic force is 800 gauss or more.

The pig receiver 3 is provided with a stopper 30 as shown in FIG. As shown in the figure, in the structure of this stopper, a stopper 30 having a hemispherically curved concave surface supported by the tip of a column 29 is provided in an enlarged diameter portion 23 formed inside a receptacle 3 connected to the pipe 2.

Therefore, as shown in FIG. 3, the pig 11 sliding in the pipe 2 and reaching the pig receiver 3 is
Stop in a state in which the spherical portion of abuts against the stopper 30. A large number of through-holes 31 provided on the curved surface of the stopper 30 alleviate the resistance of the paint flow, and the magnetic paint 5 is separated from the through-holes 31 and the gaps 32 with the inner wall.
And flows to the branched pipe 6 easily.

The connecting pipe 20 is connected to the lid 24 at the end of the receiver 3 and connected to the pressurized gas introducing mechanism. Further, a valve V5 is provided as shown in FIG. The above-mentioned column 29 is fixed to the inner plate 25 of the lid 24, and the surroundings 2 for the pressurized gas are
6 is provided. Therefore, the pig 11 can be removed by removing the lid 24, and the inspection and cleaning of the inside of the pipe 2 can be easily performed.

As described above, the pig 1 to the pig receiver 3
1 arrives at the magnet 15 buried inside the pig 11
Is detected by the proximity sensor 17 attached to the pig receiver 3, and a signal indicating arrival has been output. Then, the valve V6 on the pipe 2 is opened based on this signal, and the pressurized gas G is discharged into the gas storage tank 9 instantaneously.

At this time, the pressure in the pipe 2 is detected by a pressure detector 19 installed in the pipe 2, and the valve V6 is opened and exhausted until the pressure value in the pipe 2 reaches the atmospheric pressure.

At this time, the pipe 2 having an inner diameter of 1 to 1.5 inches is connected to the gas storage tank 9 (40 to 60 inches in inner diameter, 1000 to 3 inches in capacity).
000L), the flow velocity of the pressurized gas G, which is rapidly reduced to 1/40, for example, due to the difference in diameter, and even if a small amount of paint is mixed, the paint remains in the gas storage tank 9;
The pressure of the once-stored pressurized gas also drops, and is naturally released from the pipe 8 to the atmosphere.

When returning the pig 11 to the launcher 1, the valve V
When the pressurized gas G is introduced into the receiver 3 by closing 1, V2 and V6 and opening the valves V3 and V5, the pig 11 is pushed back and arrives at the projectile 1 soon. At this time, the proximity sensor 18 installed on the outer peripheral portion of the launcher 1 senses, the valve V5 closes, the introduction of the pressurized gas G stops, and the valve V6 opens to store the pressurized gas G. After being discharged into the tank 9, the pressure in the pipe 2 returns to the atmospheric pressure, and the operation is completed.

[0053]

Embodiments of the present invention will be described below, but the present invention is not limited to the following embodiments.

Example 1 A magnetic tape was produced using the magnetic paint transferred according to the above-described embodiment and the magnetic paint transferred according to the invention of the prior application as a comparative example, and the tape characteristics were compared.

First, the following compounding ratios except for the organic solvent solution were mixed for 10 minutes by a mixer. Thereafter, the mixture was transferred to a twin-screw kneader to perform a kneading process, and then methyl ethyl ketone, toluene and cyclohexanone were added in 10 parts each.
0 parts by weight were added, and the mixture was diluted and stirred for 2 hours.
Next, the mixture was mixed for 6 hours using a sand mill to prepare a magnetic paint.

<Coating composition> Fe-based metal magnetic powder 100 parts by weight ESREC A (manufactured by Sekisui Chemical Co., Ltd.) 10 parts by weight Polyester-based polyurethane (N2304: manufactured by Nippon Polyurethane) 10 parts by weight Carbon (average particle diameter 0.3 μm) 3 Parts by weight Alumina (average particle size 0.15 μm) 5 parts by weight Stearic acid 1 part by weight Stearic acid 1 part by weight Methyl ethyl ketone 100 parts by weight

Here, the viscosity of the magnetic paint is 8,000.
cps. However, this value is based on a B-type viscometer BM rotor No. manufactured by Tokyo Keiki Seisakusho Co., Ltd. 4 was used.

The magnetic paint was transferred from the storage tank to the receiving tank by using the apparatus and the pressure feeding device according to the embodiment shown in FIG.

Comparative Example 1 A magnetic paint was prepared by the same composition and method as in Example 1, and FIG.
The magnetic paint was transferred from the storage tank to the receiving tank using the apparatus shown in (1).

<Evaluation> After adding 6 parts by weight of Coronate L (manufactured by Nippon Polyurethane Industry Co., Ltd.) as a curing agent to each of the magnetic paints of Example 1 and Comparative Example 1 produced and transferred as described above,
It was applied to a polyethylene terephthalate film having a thickness of 14 μm so as to have a thickness of 2.0 μm after drying, subjected to a magnetic field orientation treatment and a drying treatment, and wound up. This was further subjected to a super calendering treatment and then cured at a temperature of 70 ° C. for a predetermined time to form a magnetic layer.

The obtained raw material was cut into 1/2 inch width to prepare a sample tape (video tape).

For each of these sample tapes, the magnetostatic properties of squareness ratio Rs and glossiness (GLOSS) and dropout were measured using a modified video tape recorder BVW-70 manufactured by Sony Corporation. The results of these measurements are shown in Table 1 below.

However, the squareness ratio Rs was obtained by measuring the ratio between the residual magnetic flux density and the saturation magnetic flux density of each sample tape after the formation of the magnetic layer using a VSM at a measurement magnetic field of 5 kOe. This V
As the SM, an ultra-sensitive vibration sample type magnetometer VSM-P10-15 manufactured by Toei Kogyo Co., Ltd. was used.

Further, the above GLOSSS determines the glossiness of each sample tape after the formation of the magnetic layer at an incident angle of 7 at right angles to the coating direction.
It was measured at 5 ° and the standard plate was shown as 100%. In addition,
For the measurement, a VG-ID type gloss meter manufactured by Nippon Denshoku Industries Co., Ltd. was used. This GLOSS is a measure of the dispersibility of the magnetic powder, and a smaller value indicates that the dispersibility is lower.

For measurement of dropout, a dropout counter VH-01CZ manufactured by Shibasoku was used.

Table 1 {Range ratio Rs GLOSS dropout} ──────────────────────────── Example 1 90% 105% 7 pieces / min (−16 dB / 10 μsec) Comparative Example 1 90% 105% 7 pieces / min (-16dB / 10μsec) ─────────────────────────────────

As shown in Table 1, the squareness ratio Rs, GLO
Regarding the SS (glossiness) and the magnetostatic properties of the dropout, the tape properties of both the sample tapes obtained by the transfer method of Example 1 and the sample tapes obtained by the transfer method of Comparative Example 1 did not change. That is, it was as excellent as the prior application improved so as not to be exposed to the pressurized gas.

However, according to Example 1 described above, the paint 5 is transferred by the transfer method according to the preferred embodiment described above.
Since the pig 11 automatically returns to the original position after the transfer, the pig 11 does not need to remove the pig 11 from the pig receiver 3 after the residual paint is received and pushed into the tank 51. Further, since there is no need to open the pig receiver 3 each time the paint is transferred, the periphery of the pig receiver 3 is not stained with the paint 5. Therefore, the transfer of the paint 5 was rationalized, and the productivity could be improved.

The above example can be variously modified based on the technical idea of the present invention.

For example, the configuration, shape and structure of the pig receiver and the pig can also be appropriately modified, and the pig ejector and the method of discharging the pressurized gas can be adopted as appropriate other than those described above. .

In the return path for returning the pig to the launcher, only the pig can be transferred via another pipe.

Further, the composition of the magnetic paint and the method of measuring the same,
The measurement conditions can be set as appropriate other than the examples described above.

The object to be transferred is not limited to magnetic paints, but can be applied to transfer of ordinary paints and all other liquid materials. Therefore, this method and apparatus can be applied to similar industrial fields. It is. In addition, since remote control can be performed, the equipment can be unmanned.

[0074]

As described above, according to the transfer method and the transfer apparatus of the present invention, in order to transfer the liquid material existing in the pipe to the liquid container, the pressure-feeding tool disposed in the pipe is controlled by the pressure medium. In the transfer method of sliding, after transferring the liquid material, the pump is returned to the original position without removing the pump, so that it is not necessary to remove the pump from the pipe and convey it to the original position, thereby saving labor. be able to. As a result, there is no danger of outflow of the liquid material adhering to the inner wall of the pipe or the like, and even if the residual pressure of the pressure medium exists in the pipe, there is no danger of blowing out the liquid material and scattering the liquid material.

Further, since the diameter of the front part and the rear part is larger than the inner diameter of the pipe, the pressure-feeding tool of the present invention is stabilized without tilting when the pressure-feeding tool reciprocates in the pipe, and the pressure-feeding tool is not tilted. The degree of adhesion of the pumping tool to the inner wall is increased, and leakage of the liquid material can be prevented.

[Brief description of the drawings]

FIG. 1 is a schematic view illustrating a magnetic paint transfer device according to an embodiment of the present invention.

FIG. 2 shows a pig of the transfer device, wherein (a) is a front view,
(B) is a side view.

FIG. 3 is a sectional view showing a pig receiver of the transfer device.

FIG. 4 is a schematic view showing a production process and a transportation process of a magnetic paint.

FIG. 5 is a schematic view showing a principle of transferring a paint by a pig.

FIG. 6 is a schematic view showing a magnetic paint transfer device according to the invention of the prior application.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Pig launcher, 2, 2A, 6, 7, 8 ... Piping, 3 ... Pig receiver, 4 ... Pump, 5 ... Magnetic paint, 9 ... Gas storage tank, 10 ... Transfer device, 11 ... Pig, 12 ... Middle part, 1
2a ... inside, 13 ... front, 14 ... rear, 15 ... magnet, 16, 20 ... connection pipe, 17, 18 ... proximity sensor,
19: pressure detector, 23: expanded portion, 24: lid, 25: inner plate, 26: vent hole, 29: support, 30: stopper, 3
1 ... through-hole, 32 ... gap, 51 ... receiving tank

Claims (32)

[Claims] 1. A transfer method for sliding a pressure feeder disposed in a pipe with a pressure medium to transfer a liquid present in a pipe to a liquid container, wherein the liquid is transferred after the liquid is transferred. A method for transferring a liquid material, comprising returning the pressure-feeding tool to its original position without removing it. 2. The method according to claim 1, further comprising, after stopping the pressure feeder at the end point of the transfer of the liquid, returning the pressure feeder to the start point of the transfer of the liquid by sliding the pressure feeder in the pipe in a reverse direction with a pressure medium. 2. The method for transferring a liquid material according to 1. 3. The method for transferring a liquid material according to claim 2, wherein an introduction unit for introducing the pressure medium is connected to the start point and the end point to slide the pressure feeder. 4. The liquid material according to claim 2, wherein the sliding of the pumping tool to the end point, the return to the start point, and the re-sliding after the double action are performed under automatic control. Transfer method. 5. The method for transferring a liquid material according to claim 1, wherein the pressure feeder is stopped at the end point, and a sensor for detecting the stop is provided. 6. The method for transferring a liquid material according to claim 1, wherein a diameter of a front part and a rear part of the pressure-feeding tool is larger than an inner diameter of the pipe. 7. The method according to claim 6, wherein the front part and the rear part are each formed in a spherical shape. 8. A proximity sensor as the sensing means is provided at the end point of the pressure-feeding device in which a magnet is embedded, and a valve for discharging the pressure medium is operated based on detection information of the pressure-feeding device by the proximity sensor. The method for transferring a liquid material according to claim 5. 9. The method for transferring a liquid material according to claim 1, further comprising removing the pressure feeder from the end point after transferring the liquid material to the liquid material storage portion. 10. The method for transferring a liquid material according to claim 8, further comprising: providing a tank containing the discharged pressure medium, and discharging the pressure medium to the outside via the tank. 11. A pressure detector is provided near the end point,
The method for transferring a liquid material according to claim 10, wherein the operation of discharging the pressure medium by the tank is controlled based on detection information on the pressure in the pipe by the pressure detector. 12. The method for transferring a liquid material according to claim 1, wherein an inert pressurized gas is used as the pressure medium. 13. The method for transferring a liquid material according to claim 1, wherein the magnetic paint for a magnetic recording medium is transferred. 14. A transfer device configured to slide a pressure feeder disposed in the pipe by a pressure medium in order to transfer a liquid present in the pipe to the liquid container. A means for returning the pressure-feeding tool from its end point to its original position without removing the pressure-feeding tool. 15. A pressure medium introduction means is provided at the end point for sliding the pressure feeder in the pipe in the reverse direction to return to the start point of the transfer of the liquid material.
2. The liquid material transfer device according to claim 1. 16. The liquid material transfer device according to claim 15, wherein introduction means for introducing the pressure medium is connected to the start point and the end point in order to slide the pressure feeder. . 17. The liquid material according to claim 15, wherein sliding of the pumping tool to the end point, returning to the starting point, and re-sliding after the double action are performed under automatic control. Transfer equipment. 18. The pumping device is stopped at the end point,
15. The liquid material transfer device according to claim 14, further comprising a sensing unit for sensing the stop. 19. The liquid material transfer device according to claim 14, wherein a diameter of a front portion and a rear portion of the pressure-feeding tool is larger than an inner diameter of the pipe. 20. The liquid material transfer device according to claim 19, wherein the front part and the rear part are each formed in a spherical shape. 21. A proximity sensor as the sensing means is provided at the end point of the pressure-feeding device having a magnet embedded therein, and a valve for discharging the pressure medium is operated based on detection information of the pressure-feeding device by the proximity sensor. The liquid material transfer device according to claim 18, wherein the liquid material is transferred. 22. The apparatus for transferring a liquid material according to claim 14, wherein the pressure feeder is removed from the end point portion after transferring the liquid material to the liquid material container. 23. The apparatus for transferring a liquid material according to claim 22, wherein a tank containing the discharged pressure medium is provided, and the pressure medium is discharged to the outside via the tank. 24. The apparatus according to claim 23, wherein a pressure detector is provided in the vicinity of the end point, and a pressure medium discharge operation by the tank is controlled by detection information on pressure in the pipe by the pressure detector. Liquid material transfer device. 25. The liquid material transfer device according to claim 14, wherein an inert pressurized gas is used as the pressure medium. 26. The apparatus for transferring a liquid material according to claim 14, wherein a magnetic paint for a magnetic recording medium is transferred. 27. A pressure-feeding device which slides in a pipe by a pressure medium in order to transfer a liquid existing in the pipe to a liquid container, wherein a diameter of a front part and a rear part are larger than an inner diameter of the pipe. , A pump for transferring liquids. 28. The pressure-feeding device for transferring a liquid material according to claim 27, wherein the front portion and the rear portion are each formed in a spherical shape. 29. The liquid material according to claim 27, wherein after the liquid material is stopped at the end point, the inside of the pipe is slid in the opposite direction by a pressure medium and returned to the start point of the liquid material transfer. Pumping equipment for transfer. 30. The pump for transferring a liquid material according to claim 27, wherein a magnet is embedded. 31. The pressure-feeding device for transferring a liquid material according to claim 27, wherein the pressure-feeding device is slid by an inert pressurized gas serving as the pressure medium. 32. The pressure-feeding device for transferring a liquid material according to claim 27, which is used for transferring a magnetic paint for a magnetic recording medium.