JPS6241996Y2 - - Google Patents

Description

[Detailed description of the invention] This invention automatically controls the end face seal plate of the sealing device in a high-pressure steamer used for high-humidity heat treatment of textile products according to the thermal expansion of the seal roll installed in the sealing device. The present invention relates to an automatic pressure adjustment device for an end face seal plate, which always provides a sealing effect with a desired pressing force.

The present inventor has previously filed an application for a sealing device for a high-pressure steamer that is equipped with a pair of seal rolls and an end seal plate that closes an opening formed by the end faces of the seal rolls and the end faces of the seal frame. However, in the present invention, in order to effectively bring the end seal plate into close contact with the end faces of the seal roll and seal frame, the end seal plate is automatically and An object of the present invention is to provide an automatic pressure adjustment device for an end face seal plate that can be effectively brought into close contact with the end faces of a seal roll and a seal frame. That is, the sealing rolls or the sealing frame in the sealing device are heated so much that they expand. Therefore, if the end face seal plate is brought into close contact with the end faces of the seal roll and seal frame before the sealing device is operated, the expansion during heating during operation will generate abnormal frictional force, making operation impossible. If a gap is provided between the above-mentioned members, the internal pressure inside the steamer can will be difficult to rise to the desired pressure, and there will be problems such as a long time required for normal operation.

In order to eliminate this inconvenience, the present inventor first provided a pair of sealing rubber rolls provided above the outer side of the fabric insertion hole provided in the high-pressure steamer can body to close the fabric insertion hole, and made the sealing roll rotatable. A seal device comprising a supporting seal frame and an end seal plate that is pressed against the seal rubber roll and the end face of the seal frame, and a pressing rod for pressing the end seal plate against the seal rubber roll and the end face of the seal frame; a pressure-responsive mechanism for pushing the end face of the seal rubber roll and the seal frame toward the end faces of the seal rubber roll and the seal frame by the internal pressure inside the high-pressure steamer can; We have proposed an automatic control device for an end seal plate that is equipped with a plurality of springs to apply appropriate pressure to the end surface, but this device has a structure in which the end seal plate is pushed by the pressure inside the steamer can. As the pressure inside the steamer can increases, the contact pressure between the seal rubber roll and the seal end plate increases. However, the direct cause of the change in contact pressure between the seal rubber roll and the seal end plate during operation of the high-pressure steamer is thermal expansion of the seal rubber roll and the seal end plate. Therefore, even if the pressure inside the steamer can is increased, if the degree of thermal expansion of the seal rubber roll and the seal end plate is low, there is a problem that the contact pressure between the seal rubber roll and the seal end plate is insufficient, resulting in pressure leakage.

The present invention was developed to solve this problem, and detects the contact pressure between the seal rubber roll and the seal end plate, and automatically adjusts the contact pressure between the seal rubber roll and the seal end plate according to this detected pressure. An object of the present invention is to provide an automatic control device for an end seal plate of a sealing device in a high-pressure steamer, which can be adjusted to the following.

The present invention will be explained in detail below based on embodiments shown in the drawings.

Reference numeral 1 denotes a seal block provided on the high-pressure steamer can body 2, and this seal block 1 is provided with a fabric insertion hole 3, and a pair of fabric insertion holes 3 are provided in the upper opening of the fabric insertion hole 3 and are pressed against each other. Seal rubber rolls 4 and 4' are rotatably supported. Further, seal plates 5, 5' having a semicircular cross section are fixed to the seal block 1 to close the gap formed between the pair of seal rubber rolls 4, 4' and the upper opening edge of the fabric insertion hole 3. Furthermore, the seal plates 5, 5'
is integrally formed into a cylindrical shape at both ends thereof. Reference numeral 6 denotes a pushing body support which airtightly fits and holds the pushing body 14 which is brought into contact with and superposed on the end seal plate 7 which closes the mountain-shaped gap formed between the end faces of the pair of seal rubber rolls and the seal block 1. The pushing member support fitting 6 is supported so as to be slidable along a guide fitting 8 provided on the seal block 1 in a direction parallel to the axial direction of the seal rubber rolls 4, 4'. Reference numeral 9 denotes a pressing plate that presses the end face seal plate supporting metal fitting 6 through three gap adjustment rods 10 screwed onto the pushing body supporting metal fitting 6. The tip of the adjustment screw 11 is screwed together. Reference numeral 12 denotes a support member that supports the pressure adjustment screw 11, and this support member 12 is fixed to the seal block 1. Reference numeral 13 denotes an airtight chamber formed between the pushing body support fitting 6 and the pushing body 14, and a pressure detector ( (not shown) is provided, and the detection signal from this pressure detector operates the solenoid valve 15 for supplying and exhausting air pressure into the airtight chamber to maintain the air pressure inside the airtight chamber at a predetermined set pressure. It is becoming possible to do so. 16 is a handle for rotating the pressure adjusting screw 11 via a speed reducer 17.

Next, to describe its operation, first, when the seal rubber rolls 4, 4' are not expanded, the handle 16 is operated so that the end face seal plate 7 comes into contact with the end face of the seal rubber rolls 4, 4'. The contact force is adjusted in advance, and the temperature inside the steamer can 2 is increased (up to 150°C in the example).As the temperature inside the steamer can 2 increases, the seal rubber roll 4 , 4' are also heated and expanded, but at this time, the end seal plate 7 and the pushing body support fitting 6 are heated and expanded by the axial expansion force of the seal rubber rolls 4, 4'.
Since the pushing body 14 supported by the airtight chamber 13 is pushed against the pressure inside the airtight chamber 13, the air pressure inside the airtight chamber 13 is increased. This increase in air pressure within the airtight chamber 13 is detected by a pressure detector (not shown), and the electromagnetic valve 15 is opened/closed based on the detection output to adjust the amount of pressure gas supplied into the airtight chamber 13. That is, when the pressure inside the airtight chamber 13 that the pressure detector receives increases from a set value, the pressure inside the airtight chamber 13 decreases due to the operation of the solenoid valve 15, and the end face seal plate 7 and the seal rubber rolls 4, 4' are moved by the pushing body 14. The contact pressure between the end face seal plate 7 and the seal rubber rolls 4, 4' is reduced so that the seal rubber rolls 4, 4' can rotate smoothly while preventing leakage of pressure inside the steamer can. Can be automatically adjusted. Further, when the pressure applied to the pressure detector decreases below the set value, the electromagnetic valve 15 is operated by the electrical output from the pressure detector, and pressurized gas is supplied into the airtight chamber 13. The contact force between the end face seal plate 7 and the seal rubber rolls 4, 4' is strengthened, and leakage of pressure inside the steamer can can be prevented, while automatic adjustment can be made so that the seal rubber rolls can rotate smoothly.

As described above, the present invention has an airtight chamber formed between the end seal plate and the end seal plate support fitting, and uses fluid pressure supplied into this airtight chamber to push the end seal plate toward the end face of the seal rubber roll. This is because it is equipped with a pushing body, a pressure detector that detects the internal pressure in this airtight chamber, and a pressure control device that controls the internal pressure of the airtight chamber to a predetermined pressure using the pressure detection signal from this pressure detector. According to the method, the contact pressure between the end seal plate and the seal rubber roll due to the thermal expansion force of the seal rubber roll is detected by a pressure detector.
The contact pressure between the seal rubber roll and the end face seal plate can be automatically adjusted to a pressure that allows the seal rubber roll to rotate smoothly while preventing the leakage of air pressure inside the steamer can. This has the effect of ensuring continued smooth operation.

[Brief explanation of the drawing]

The drawings all show an embodiment of the automatic end seal plate pressure adjustment device according to the present invention, with FIG. 1 being a sectional view thereof, FIG. 2 being a side view thereof, and FIG. 3 being an enlarged view of the main parts. 1...Seal block, 2...High pressure steamer can body,
3...Fabric insertion hole, 4,4'...Seal rubber roll,
5, 5'...Seal plate, 6...End seal plate support fitting, 7...End seal plate, 8...Guide fitting, 9...Press plate, 10...Gap adjustment rod, 11...Press adjustment screw,
12... Supporting member, 13... Airtight chamber, 14... Pushing body,
15...Solenoid valve, 16...Handle, 17...Reducer.

Claims (1)

[Scope of utility model registration request] A pair of seal rubber rolls 4 and 4' are provided above the fabric insertion hole 3 provided in the high-pressure steamer can body to close the fabric insertion hole, and the seal block 1 rotatably supports the seal rubber roll. The end face seal plate 7 is pressed against the end faces of the seal rubber roll and the seal block and is slidably supported in the axial direction of the seal rubber roll by the seal block, and the support member integrally formed with the seal block provides a seal rubber roll. A pressure adjustment screw 11 is screwed and held so that it can move forward and backward in the axial direction of the
and a press plate 9 that moves in the axial direction of the seal rubber roll according to the forward and backward movement of this pressure adjustment screw, the end face seal plate 7 is in contact with the surface opposite to the side that comes into contact with the seal rubber roll. a pushing body support fitting 6 that is disposed opposite to this pushing body 14 and forms an airtight chamber 13 with the pushing body 14; The internal pressure of the airtight chamber is determined by a gap adjustment rod 10 for receiving the side surface on the pressing plate 9, a pressure detector for detecting the internal pressure in the airtight chamber 13, and a pressure detection signal from this pressure sensor. An automatic pressure adjustment device for an end face seal plate in a sealing device for a high-pressure steamer, characterized in that it is equipped with a pressure control mechanism that controls the pressure to a predetermined pressure.