JPS6055618B2 - Wastewater discharge method in water jet stream - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for discharging waste water containing glue gas, scum, etc. generated by weft jet water during weaving using a water jet loom.

Conventionally, weft jet water used for weaving in a water jet loom is temporarily stored in a storage tank after weft insertion is completed, and then discharged as waste water.

Figure 1 shows a simplified side view of a basic storage tank, etc. that has been used conventionally.
(not shown) is in operation, the storage tank A is
The used weft jet water is suctioned in from the inlet 2 as waste water a containing impurities, and is stored in the storage tank A. Next, when the water jet loom stops, the operation of the pressure reducer 1 also stops,
The air pressure inside the storage tank A becomes the same as the outside air pressure, and at the same time, the drain valve 3 opens and drains the waste water a into a drain (not shown). In this case, no particular problem occurs during short-term operation, but after about 4 hours, glue gas and scum that have fallen off from the warp threads contained in the wastewater a, or groundwater, tap water, etc. used for economic reasons, When deposits of impurities such as suspended matter contained in river water are discharged into Hiyamaji, the drainage canal The sediment accumulates and builds up, and within two weeks, bacteria breeds and eventually turns into gelatinous filth.As a result, the condition of the drainage canals gradually deteriorates, and a strange odor wafts up inside the factory. Therefore, regular cleaning work of drainage channels is required.Therefore, we have developed a sizing agent that does not cause the adhesive to come off due to friction between the reed and the warp threads during weaving, and in the case of melt-spun yarn, it is necessary to clean the threads. Efforts have been made to develop oil agents with high focusing properties that do not require sizing agents, which provide a high level of focusing ability and enable weaving without heating or sizing, and to purify the sprayed water used, but the effects are still insufficient. The object of the present invention is to provide a method that can prevent the accumulation of sediments in drainage channels as described above and achieve a sufficient drainage effect.

That is, waste water containing glue gas, scum, etc. generated during weaving using a water jet loom is aerated in water in a depressurized storage tank, and is discharged in a suspended state. The configuration will be explained in detail based on an example.

FIG. 2 is a simplified side view of one embodiment of the storage tank used in the method of the present invention. That is, an aeration pipe 4 is provided from the inlet 2 of the storage tank B toward the inside of the storage tank B, and
Moreover, the length is such that the lower end 4' of the pipe 4 is always located below the water surface L of the stored wastewater a. Further, a shielding plate 5 is attached to prevent splashes of waste water a generated inside the storage tank B due to aeration from entering the pressure reducing machine 1. ) Since it has the above structure, the
- The jet loom starts operating and the pressure reducer 1 operates,
When the pressure in the storage tank B is reduced until the air in the aeration vibrator 4 is blown out from the tip 4'' of the aeration vibrator 4 below the water surface L of the stored wastewater a into the stored wastewater a, the used weft threads are Wastewater a containing impurities b such as glue gas and scum, such as jetted water and water dehydrated from the fabric being woven that has been moistened by the jetted water, is sucked into the pipe 4. Then, from the tip 4'', it is ejected together with air into the stored wastewater a, thereby performing aeration.

Therefore, the impurity b becomes suspended in the stored wastewater a.
Since the pressure reducing machine 1 continues to operate at all times during the operation of the water jet room, the aeration caused by this jetting causes the above-mentioned suspended state to continue. Then, when the water jet loom stops operating, the pressure reducing machine 1 also stops operating, and at the same time the drain valve 3 is opened, and the waste water in which the impurities b are dispersed in suspension is directly discharged to the drain channel. Specific example: 48 units of Nissan Water Jet Noreme (LW-41) were used, and the loom rotation speed was 400 rpm. p. At a weaving factory where various types of nylon taffeta are weaved using a weft jetting device using an 18φ pump, 24 of the machines are equipped with the conventional storage tank shown in Fig. Using the storage tanks in which the invented method was implemented, the drainage status of each was investigated.

The results are shown in the following table, where column A shows the condition of the drainage channel of the conventional storage tank, and column B shows the condition of the drainage channel of the storage tank in which the method of the present invention was implemented. As is clear from the above specific examples, when the method of the present invention is carried out, impurities become suspended in wastewater and are discharged as they are, so the discharge efficiency can be dramatically increased. ,
As a result, impurities such as gelatin-like filth, etc., will no longer accumulate in the drainage canals in the machinery industry and cause strange odors, which will greatly reduce the frequency of drain cleaning work that has traditionally been done. The present invention is a simple method and has many advantages, including labor savings.

[Brief explanation of drawings]

FIG. 1 is a simplified side view of a conventional storage tank, etc., and FIG. 2 is a simplified side view of an embodiment of a storage tank, etc. for carrying out the method of the present invention. A... Conventional storage tank, B... Storage tank for carrying out the method of the present invention, 1... Pressure reducer, 2... Inlet, 3...
...Drain valve, 4...Aeration vibrator, a...Wastewater, b
···impurities.

Claims (1)

[Claims] 1. A method for discharging wastewater in a water jet loom, characterized in that wastewater containing glue residue, scum, etc. generated during weaving in a water jet loom is aerated in a depressurized storage tank and discharged in a suspended state.