JP2560646Y2 - Jet pipe of paper machine or paperboard machine and its purification valve - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a purge valve for a jet pipe including a disc valve (disc valve) of a paper machine or a paperboard machine, wherein the purge valve is closed during operation of the jet pipe, and the jet pipe is closed. It is installed to open and remove the washing liquid during washing.

[0002]

BACKGROUND OF THE INVENTION In the washing of fabrics, such as wires and / or felt, in paper or board machines, jet pipes are used across the entire width of the fabric. Such jet pipes include a continuous nozzle hole through which a jet of high-pressure water is constantly directed at the outer surface of the fabric, said jet cleaning the fabric. The pressure of this cleaning liquid is high, usually below 35 bar. The jet pipe is usually arranged in connection with the return of the wire or felt in the paper machine. Further, in the wire section, for example, a breast roll, a drive roll, a wire return roll, and the like are cleaned using a jet pipe. Still in connection with the return roll, jet pipes may be used for various doctor fluids. In addition, jet pipes are used, for example, in connection with suction boxes and in connection with devices for cleaning drying wires. Jet pipes also find use in cleaning the inside of former and suction rolls.

[0003] Foreign matter adheres to the inner surface of the jet pipe and to the nozzle opening and must be cleaned occasionally, for example, with a brush or equivalent cleaning means, to prevent blocking of the jet pipe and to guarantee its operation. Must. These jets pipe is usually provided with a cleaning valve, to be divided removed by the fouling substance is washed by the this
Remove the liquid for cleaning the jet pipe so as not to get into the target paper . For example, when paper is being manufactured in three shifts, the jet pipe is washed, for example, once for each shift.

[0004]

However, as is known in the prior art as a purge valve for a jet pipe, a cleaning valve for a jet pipe is
The opening for cleaning is closed during the time of the actual operation of the jet pipe, and a disc valve is used which is opened when cleaning the jet pipe. In this case, the cleaning liquid is moved into the cleaning duct through the opening for cleaning.

As is well known, these disc valves are mounted in connection with the jet pipe and close against the action of pressure on the jet pipe. In this case, the closing of the valve is difficult and the valve must remain tight or at least fully closed in order to close completely.

It is an object of the present invention to provide a flush valve for a jet pipe which overcomes the disadvantages of the prior art.

[0007]

According to the present invention, there is provided a purifying valve for a jet pipe of a paper machine or a paperboard machine, wherein the purifying valve includes a disc valve, and the disc valve includes: The jet valve is mounted to close during operation of the jet pipe, open during cleaning of the jet pipe and remove the cleaning liquid, and the disc valve attempts to change the position of the disc valve due to the pressure acting in the jet pipe. It is attached so that it may be closed in the same direction as it does.

[0008]

According to the present invention, the disc valve is mounted so as to be closed during operation of the jet pipe and open during cleaning of the jet pipe to remove the cleaning liquid. Further, the disc valve is mounted such that the pressure acting in the jet pipe closes in the same direction as it is trying to change the position of the disc valve.
As a result, a reliable airtight is achieved, in this case,
There is no liquid leakage and therefore a more effective jet spray can be achieved and the amount of liquid used can be saved.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the embodiments of the present invention shown in the accompanying drawings. However, the present invention is not strictly limited to the details of the above embodiment.

FIG. 1 shows a purge valve in a closed position of a jet pipe according to the present invention. FIG. 2 shows the purification valve in the open position of the jet pipe according to the present invention. 3 to 9 show another application example according to the present invention in a paper machine.

As shown in FIG. 1, one of the ends of the jet pipe 12 is typically located near the monitoring side of the paper or board machine.
Located in Ku, purifying valve is disposed in this end. Disk valve 10 is in the closed position, closes the opening 16 directed out of the jet pipe into the washing liquid chamber 17
Tei Ru. The right side of the shaft 13 in FIG.
Brush (not shown) is supported radially around shaft 13
Have been. By rotating the shaft 13, the bra
The inner surface of the jet pipe 12 and the nozzle formed on it
Chicks (not shown) can be cleaned. The level of pressure acting on the jet pipe 12 is at or below 35 bar, and the force created by this pressure is indicated schematically by the arrow F in the figure. When the shaft 13 connected to the valve housing 11 of the purification valve rotates by its end, the disc valve 10
The pressure F acting in 12 is closed in the same direction as trying to move the disc valve 10 . Disc valve 10 seal
15 closes the opening 16 between the cleaning liquid chamber 17 and the jet pipe 12. A thread 14 is formed in the valve housing 11 of the purge valve, thereby moving a shaft 13 which displaces the disc valve 10.

FIG. 2 shows the valve in the open position of the present invention. In this case, the inside of the jet pipe and the opening of the nozzle (not shown) are cleaned in a manner known per se. The cleaning liquid moves through the opening 16 into the cleaning liquid chamber 17, which is further removed from the cleaning liquid chamber 17 through the wash opening (not shown). 1 and 2, the same reference numerals indicate the same parts.

As shown in FIGS. 1 and 2, the cleaning liquid chamber
The opening 16 between 17 and the jet pipe 12 is formed in a conical shape, and accordingly the seal 15 of the disc valve 10
Rests on the surface of the circle cone. Thereby, the sealing condition is improved. As the shaft 13 is rotated by its end, the shaft 13 moves on the thread 14. Thereby, the disc valve 10 shifts and opens the opening 16. Similarly,
When the shaft 13 rotates in the opposite direction, the disc valve 10
Closes the opening 16.

The valve housing 11 of the cleaning valve is produced, for example, by casting a blank into which a thread 14 and a conical sealing surface of an opening 16 between the cleaning liquid chamber 17 and the jet pipe 12 are provided, for example by machining. As a result, it is made as an integral part. Thus, the purification valve according to the present embodiment is simple in terms of manufacturing technology and assembly, and is therefore economical.

FIG. 3 shows a specific example in which the jet pipe 12 having a purifying valve is applied to purify the inside of the former roll 50. FIG. 4 shows a specific example in which the jet pipe 12 is arranged in relation to the suction box 55 to clean the wire F and the nip N formed by the wire F and the roll 56. FIG. 5 shows a jet pipe 12 in combination with an air jet 53 in a device 54 for cleaning the drying wire F.
Shows one specific example in which is used. FIG. 6 shows a specific example of cleaning the inside of the Ford linear forming wire loop F using the jet pipe 12. One jet pipe 12 is mounted to clean the nip N in front of the drive roll 60, and the other jet pipe 12 is mounted to clean the inner surface of the wire loop F. FIG. 7 shows a specific example in which the jet pipe 12 is mounted inside the wire loop F, and FIG.
A specific example attached to the outside of the wire loop F is shown. FIG. 9 shows a specific example in which the jet pipe 12 is mounted in relation to the cleaning doctor 62 of the roll 64.

[0016]

As described above, according to the present invention, the disc valve is mounted so as to be closed during the operation of the jet pipe and to be opened during the cleaning of the jet pipe to remove the cleaning liquid. Further, the disc valve is mounted such that the pressure acting in the jet pipe closes in the same direction as it is trying to change the position of the disc valve. Thus, a more effective jet spray is achieved, while the amount of liquid used is saved.

[0017] Plastic sealing plastic sealing in the valve is considerably worn like slave <br/> come art would Tsu down sliding for constantly follow the liquid flow due to leaks
Is not present in this valve .

Further, the purifying valve according to the present invention is easy to open, and particularly easy to close.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a purification valve in a closed position of a jet pipe according to the present invention.

FIG. 2 is a sectional view showing the purification valve in a position where the jet pipe is opened according to the present invention;

FIG. 3 is a diagram showing an application example of a paper machine to which the embodiment shown in FIGS. 1 and 2 is applied.

FIG. 4 is a diagram showing an application example of a paper machine to which the embodiment shown in FIGS. 1 and 2 is applied.

FIG. 5 is a diagram showing an application example of a paper machine to which the embodiment shown in FIGS. 1 and 2 is applied.

FIG. 6 is a diagram showing an application example of a paper machine to which the embodiment shown in FIGS. 1 and 2 is applied.

FIG. 7 is a diagram showing an application example of a paper machine to which the embodiment shown in FIGS. 1 and 2 is applied.

FIG. 8 is a diagram showing an application example of a paper machine to which the embodiment shown in FIGS. 1 and 2 is applied.

FIG. 9 is a diagram showing an application example of a paper machine to which the embodiment shown in FIGS. 1 and 2 is applied.

[Explanation of symbols]

 10 Disc valve 11 Valve housing 12 Jet pipe 13 Shaft 14 Thread 15 Seal 16 Opening 17 Cleaning liquid chamber

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) Reference Jikken 45-27281 (JP, Y1)

Claims (1)

(57) [Scope of request for utility model registration] 1. A jet pipe of a paper or board machine, said jet pipe is disposed in the jet pipe to clean the nozzles in <br/> plane Contact Yobi該jet pipe of the jet pipe
A rotatable shaft for purifying, during operation of the jet pipe, a pressure applied in a first direction by a flow of pressurized fluid passing through the jet pipe to open and close a flow of water purifying the jet pipe. A cleaning valve, wherein, when cleaning the jet pipe, the cleaning valve has an open position that facilitates removal of water used for cleaning the jet pipe and a closed position that is a position where the jet pipe is in operation. And a disc valve moving means connected to said shaft for moving said disc valve from said open position to said closed position in a first direction, thereby purifying said jet pipe. A jet pipe for a paper machine or a paperboard machine, characterized by opening and closing the flow of water.