JPH024394Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a steam circuit for controlling heating steam for a warp drying cylinder in a warp sizing cylinder dryer.

Conventional technology Conventionally, in a warp sizing cylinder dryer,
The method of controlling the degree of warp drying using a large number of warp drying cylinders can be roughly divided into two types: In order to maintain a constant drying speed, the temperature of the cylinders is kept constant, and in order to keep the drying rate constant, the temperature of the cylinders is detected and the cylinder temperature is controlled. Controls the supply of heating steam on and off.

Contrary to the above, steam is allowed to enter the cylinder and the speed of the warp threads is controlled according to the degree of dryness.

Any of the above methods or these,
It was a combination of methods.

Problems to be Solved by the Invention However, in any of the above methods, when the warp sizing cylinder dryer stops running the warp, the steam in the cylinder causes the warp in contact with the cylinder to become over-dried. being used will harm the quality.

Therefore, the object of the present invention is to prevent overdrying of the warp threads when the warp threads are stopped, thereby preventing the quality of the warp threads from deteriorating.

Means for Solving the Problems That is, the overdrying prevention steam circuit of the warp sizing cylinder dryer of the present invention has a steam circuit for warp drying cylinders, in which the warp threads are routed in a steam supply path that supplies steam into the cylinder. An automatic on-off valve that closes when the warp is stopped is interposed, and a steam discharge path is provided on the steam outlet side of the automatic on-off valve of the steam supply path through an automatic valve that opens when the warp threads stop running in conjunction with the automatic on-off valve. It is characterized by the fact that it is connected to the

Function: During the warp operation, the warp sizing cylinder dryer heats the cylinder with steam supplied into the cylinder in the steam circuit and dries the warp passing through the cylinder to a predetermined residual moisture range. When the upper warp threads stop running, the warp threads are stopped while remaining in contact with the cylinder.
At this time, the steam in the cylinder still has the above-mentioned drying ability, so the warp threads would become overdried, but in this case, the automatic valve in the steam exhaust path opens and the steam in the cylinder is discharged. The warp yarns are discharged from the cylinder through a passageway to prevent overdrying of the warp yarns.

Example Next, an example shown in the drawings will be explained. This example shows a case where the above method is applied.
1 is a warp drying cylinder of a warp sizing cylinder dryer, and the steam circuit that supplies steam into the cylinder 1 has an automatic on-off valve 3 interposed in a steam supply path 2, and a rotary joint 4 connected to the tip of the steam supply path 2. Connected to the hollow shaft 5 at one end of the cylinder 1 through the condensate drain pipe 6 whose base end faced the lower part of the cylinder 1, passed through the hollow shaft 5 and each axis of the rotary joint 4, and The drain is led to a drain collecting section (not shown) via a trap 7 and a check valve 16.

In addition, the control section of this steam circuit is the cylinder 1
A temperature sensor 9 facing into the cylinder 1 through the hollow shaft 8 at the other end is supported by a rotary joint 10 provided at the end of the hollow shaft 8. The output side of the control device 11 is connected to the operating section of the automatic on-off valve 3.

In this example, the steam exhaust path 12 is connected to the automatic opening/closing valve 3.
connected to the steam supply path 2 between the rotary joint 4 and the rotary joint 4,
The steam exhaust path 12 is equipped with an automatic valve 13 for releasing steam when stopped.
The output side of the control device 11 is connected to the operating section of the automatic valve 13 via the control device 11 . In addition, in the figure, 14,
15 is a safety valve attached to each steam supply path 2;
It is a pressure gauge. 17 is a manual on-off valve connected to the bypass outlet of trap 7.

In this example, when in use, steam is supplied into the cylinder 1 from the base side of the steam supply path 2 through the automatic on-off valve 3, the rotary joint 4, and the hollow shaft 5 in order, and the temperature sensor 9 inputs the detected value of the temperature inside the cylinder 1 to the control device 11, and the control device 11 operates to open the automatic on-off valve 3 when the detected temperature value is lower than the set value, and when it is higher than the set value. The automatic opening/closing valve 3 is operated to close. The supply of the steam is controlled by the opening/closing operation of the automatic opening/closing valve 3, maintaining the temperature of the cylinder 1 appropriately, and properly drying the sheet-like warp yarns Y to Y passing through the cylinder 1.
In addition, the steam that entered cylinder 1
By drying ~Y, the condensed water is discharged through a drain pipe 6 through a trap 7 and a check valve 16 in sequence.

Then, in the work process, it is necessary to stop the warp yarns Y to Y by the warp sizing cylinder dryer, and in that case, when the operation stop button (not shown) of the control device 11 is pressed, the operation is automatically stopped in conjunction with this. Valve 1
3 operates to open, and the automatic on-off valve 3 operates to close,
The steam inside the cylinder 1 is discharged from the steam supply path 12 via an automatic valve 13, and overdrying of the warp threads Y to Y on the cylinder 1 is prevented. In addition,
The automatic valve 13 in the open state returns to the closed state in conjunction with the restart of the warp sizing cylinder dryer by the control device 11.

The present invention can also be applied to the method described in the prior art section, in which case a warp moisture detector installed at a different location is used in place of the temperature detector 9 in the above example.

Effects of the invention As described above, in the present invention, when the warp thread movement of the warp sizing cylinder dryer is stopped, the steam inside the cylinder can be discharged through the steam exhaust passage by the automatic valve opening operation, and the warp threads that are stopped in contact with the cylinder can be discharged by opening the automatic valve. It is possible to prevent overdrying of the warp yarns and prevent deterioration in the quality of the warp yarns.

[Brief explanation of the drawing]

The drawing is a circuit diagram of an embodiment of the present invention. 1...Cylinder, 2...Steam supply path, 3...
Automatic on-off valve, 4...Rotary joint, 5...Hollow shaft, 6
... Drain pipe, 7 ... Trap, 8 ... Hollow shaft, 9
... Temperature detector, 10 ... Rotary joint, 11 ... Control device, 12 ... Steam exhaust path, 13 ... Automatic valve,
14... Safety valve, 15... Pressure gauge, 16... Check valve, 17... Manual on/off valve, Y... Warp.

Claims (1)

[Scope of utility model registration request] In the steam circuit of the warp drying cylinder, an automatic opening/closing valve that closes when the warp operation is stopped is interposed in the steam supply path that supplies steam into the cylinder,
Warp sizing cylinder drying, characterized in that a steam discharge path is connected to the steam outlet side of the automatic on-off valve of the steam supply path via an automatic valve that opens when the warp threads stop running in conjunction with the automatic on-off valve. Steam circuit to prevent overdrying of the machine.