JPH0644982B2 - Dye preparation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a dye preparation device.

[Prior Art] In the preparation of a dye, a method of automatically injecting while measuring the dye is generally used. That is, the weight of the raw material discharged into the container is constantly measured by a balance, and a method of controlling the discharge amount by the feedback is used.For the target discharge amount to be injected into the container placed on the balance, A set value before the target discharge amount is set in advance, discharge is initially performed at a large flow rate, and when the measured value reaches the set value at this time, the discharge valve for large flow rate discharge is closed, and thereafter the measured value is the target discharge. A small flow rate is being discharged until the volume is reached. When all the required dyes have been weighed, the mixed solution is pumped to the next preparation step.

However, in the dye preparation, many kinds of dyes are used to match the target color. In addition, since the number of types of colors required as target colors is enormous, there is a 10,000-fold difference in the amount of each dye used in the liquid preparation. For example, 10 kg of red dye and 1.3 g of black dye are prepared. As described above, there are the following problems in industrially preparing various dyes with a wide range of usage amounts by the above method.

A load cell has been conventionally used as a balance. An example thereof is the measurement control device disclosed in Japanese Patent Laid-Open No. 57-64119. However, since the measurement error of the load cell is about 1/1000, it cannot be used in the liquid preparation which requires the accuracy of the error of 1/10000 as described above. In addition, the accuracy of the load cell becomes worse under the influence of temperature drift and wind.

Further, even if the above-described highly accurate liquid preparation can be performed, there are practically many problems in accurately reproducing such a liquid preparation on site. One of them is whether or not the whole amount can be accurately put into a predetermined solution tank when the measured amount is transferred to the solution tank, and dyes of different colors are added to various solution tanks. The question is whether or not the product can be delivered.

"Object of the Invention" An object of the present invention is to provide a dye preparation apparatus which realizes highly accurate measurement and can supply the mixed solution to a desired preparation tank while maintaining the accuracy. Is.

In order to achieve such an object, the present invention includes a plurality of dye stock tanks and a number of discharge valves corresponding to each dye stock tank in a housing, and a desired discharge valve is provided with a predetermined dye supply tank. A dispenser that is moved to a position, an upper hopper that is placed on a balance such as an electromagnetic balance type that receives and measures the dye discharged from the dispenser, and a lower portion that receives the dye mixture liquid from the upper hopper A hopper, a jet pump that conveys the mixed liquid received by the lower hopper by a back pressure of a water jet, and a liquid adjusting tank that receives and adjusts the transferred dye mixed liquid. A dye preparation device is provided.

[Advantageous Effects of the Invention] According to the present invention, it is possible to perform extremely highly accurate metering at the time of preparing a dye, and it is possible to feed the dye to a desired solution adjusting tank while maintaining the metering accuracy. The liquid as a whole can be made more efficient and highly accurate.

[Example] Hereinafter, a dye preparation apparatus according to an example of the present invention will be specifically described.

First, FIG. 2 shows an example of a dye preparation system in which the above-mentioned dye preparation device is used. In the dye preparation system, a computer color matching method (CCM) is adopted for color matching, and a host computer for process control is introduced to automate the process. The outline of the operation of this dye preparation system will be described below with reference to the flowchart shown in FIG. When the operator sets the target color on the colorimeter 1 equipped with an automatic spectrophotometer (step S1), the colorimeter 1 measures the spectral reflectance of this target color, and then uses this data as an analog digital (A / D) signal. ) CCM computer 3 via converter 2
(Step S2). CCM computer 3
Performs prescription calculation on this data based on the colorimetric value or the like stored in advance for each dye, and determines the type and amount of the dye to be used (step S3). The result is transferred to the host computer, where a machining schedule is set for each machine (step S4), and a liquid preparation tank and a machine tank are allocated (step S5). Next, the required dye is injected from the corresponding dye stock tank 21 to the dispensing and measuring unit 9 according to the prescription until the predetermined measured value is reached. When the predetermined measured value is reached, the next dye is measured and the measurement is carried out as prescribed (step S6). When all the dyes have been weighed according to the prescription, the mixed solution of such dyes is prepared in the preparation tank 3
8 (step S7). The transferred mixed liquid of dyes is stirred in the liquid preparation tank 38 with a predetermined amount of auxiliary agent and water to be uniformly stirred (step S8). This completes the liquid preparation, and the measured values of the dyes used in the liquid preparation are transferred from the host computer 7 to the CCM computer 3 (step S9). The information such as CCM prescription, search prescription, and dye measurement results stored in the CCM computer 3 can be obtained at any time by keying in the necessary information name from the CCM operation station 12 ( Steps S10 and S11).

Next, the structure of the dye preparation device according to the embodiment of the present invention will be described. As shown in FIG. 1, this dye preparation apparatus comprises a plurality of dye stock tanks 21, a dispenser 24, an upper hopper 25, an electromagnetic balance 26, a lower hopper 28, and a plunger pump 31 according to the order in which the dyes are sent.
It is provided with a jet pump 30 and a liquid preparation tank 38 to which driving water is supplied by the above. FIG. 4, FIG. 5, and FIG. 6 respectively show the arrangement of devices from the dispenser 24 to the jet pump 30. The dispenser 24 is located at the uppermost part, is fixed on the foundation (not shown), and is mechanically separated from each device below the upper hopper 25, and vibrations and the like affect the following weighing system. I am trying not to give. An upper hopper 25 is located directly below the dispenser 24. The upper hopper 25 is supported on the electromagnetic balance 26 installed on the foundation via the support legs 61. The upper hopper 25 is supported only by the electromagnetic balance 26, and is mechanically separated from the devices below the lower hopper 28 so that only the dye injected into the upper hopper can be measured. . A cleaning ring 56 for cleaning the dye adhering to the inner surface of the upper hopper 25 is arranged at the upper opening of the upper hopper 25. Upper hopper 25
A lower hopper 28 placed on a support base 62 fixed on the foundation is located below the. This lower hopper 28
Once receives the measured dye from the upper hopper 25,
A hopper valve 2 provided for a relay for sending to the liquid preparation tank and provided at the discharge port of the upper hopper 25.
When 7 is opened, it receives dye from upper hopper 25. Dye discharge passage 29 from the lower end of the lower hopper 28
Is extended downward, is bent by 90 °, is extended horizontally, and is connected to the jet pump 30. Also, the lower hopper 28
A cleaning ring 57 for cleaning the dye adhering to the inner surface of the upper hopper 28 is disposed in the upper opening of the. The dye stock tank 21 and the liquid preparation tank 38 are fixed on the foundation at appropriate positions near the assembly shown in FIGS. 4 to 6.

Furthermore, the function and action of each device constituting the wood dye preparation apparatus will be described with reference to FIG.

The plurality of dye stock tanks 21 store the dyes as raw materials. The stored dye is supplied to the dispenser 24 through a passage 22 by a pump (not shown), while excess dye is returned to the dye stock tank 21 through a passage 23. Alternatively, the dye stock tank 21 may have a pressure structure, and the dye may be supplied to the dispenser 24 by pressurizing air or nitrogen gas.

The dispenser 24 functions to select a dye to be weighed and to inject the corresponding dye into the upper hopper 25 until a predetermined weighing value is reached. FIG. 7 is an overall view of the dispenser 24. A plurality of dye stock tanks 21 are arranged around the dispenser. Reference numeral 22 is a pipe for sending liquid from the dye stock tank 21, and 23 is a pipe for return, which is connected to the discharge valves D ₁ , D ₂ ~ via the relay valves C ₁ , C ₂ ~. A flexible tube is used as the liquid delivery pipe from the relay valve C to the discharge valve D. G ₁ and G ₂ to are air means for driving the discharge valve D, respectively. The discharge valve D has two discharge nozzles, a large discharge nozzle and a small discharge nozzle. The discharge valve D first injects into a discharge nozzle with a large discharge flow rate, and if the set remaining injection amount is below a predetermined value, a discharge nozzle with a discharge flow rate smaller than the discharge nozzle. By switching to, the discharge is performed, and the last intermittent discharge is performed, the measurement accuracy can be greatly improved if the set value is approached. If the small discharge nozzle discharges for 0.1 second, a discharge of about 1 g can be realized.

Such a discharge valve D and air means G are (G ₁ , G ₂ ),
They are fixed to each other in pairs such as (G ₃ , G ₄ ). Each of these is movably supported by an individual arm mechanism (not shown).
L ₁ and L ₂ are sponges soaked with water. The sponge L is designed to immerse the discharge valve D that is not in use in water in order to prevent the nozzle valve of the discharge valve D from being dried. This is to prevent sagging when coming out in front. The dye discharged from the discharge valve D of the dispenser 24 enters the upper hopper 25.

The dye stored in the upper hopper 25 is constantly measured by the electromagnetic balance 26. When injecting each dye from the dispenser 24 into the upper hopper 25, the host computer 7 constantly compares the target measured value with the actual measured value, and according to the difference, the discharge valve D of the dispenser 24 is compared.
The discharge flow rate is decreased as the actual measured value approaches the target measured value, and finally the discharge valve D is in the small flow rate shot mode. The discharge valve D is stopped when the actual measured value reaches the target measured value.
Therefore, the injection overload in this case is 1 g as described above.
It becomes the following. The injection amount of the corresponding dye is calculated by calculating the difference between the measured values before the start of discharge and after the stop of discharge. Electromagnetic balance 2
The error of No. 6 is 1 in 100,000 to 1 in 200,000, which is a surprisingly high accuracy as compared with the error of the load cell which has been conventionally used is about 1/1000. Similarly, high precision can be obtained by using a tuning fork type instead of the electromagnetic balance type. The high precision of the electromagnetic balance 26 and the discharge valve D realizes the high precision measurement required for dye preparation. When the injection / measurement of all the dyes described in the prescription is completed, the hopper valve 27 is opened and the jet pump 30 starts operating.

The dye mixture flows down from the upper hopper 25 to the lower hopper 28 via the hopper valve 27, is further sucked by the jet pump 30 through the passage 29, and is then discharged from the jet pump 30. The passage 35, the three-way valve 36, Passage 3
It enters into the liquid preparation tank 38 through 7.

The lower hopper 28 has a function of receiving the dye mixture flowing down from the upper hopper 25 without losing it.

Cleaning rings 56 and 57 are provided near the upper ends of the upper hopper 25 and the lower hopper 28, respectively. After the dye mixed solution is transferred from the upper hopper 25 to the preparation tank 38, the cleaning water is supplied through the valve 52 to the cleaning rings 56 and 5.
7 and is jetted. Then compressed air is supplied,
Blow the wash water in the ring to prevent dripping. The cleaning water sprayed at a high speed adheres to the inner walls of the upper hopper 25 and the lower hopper 28 and effectively cleans a small amount of residual dye.
After the cleaning, the cleaning water containing the residual dye is transferred to the solution adjusting tank 38 as in the case of the dye mixed solution. This allows
All the measured dyes enter the liquid preparation tank 38 to prevent errors due to the residual dyes. This operation is indispensable for dye preparation, which has a serious influence on the quality even with an error of a few g. On the other hand, this cleaning allows the passage from the upper hopper 25 to the passage 37.
It is possible to prevent the dye passing portion of each device up to the above from being mixed, and to prevent the dye from mixing in the next liquid to be mixed.

The jet pump 30 has a function of sending the dye mixture liquid received by the lower hopper 28 to the liquid preparation tank 38 by using high-pressure drive water discharged from the plunger pump 31 as a power source. The jet pump 30 is a hydrospiral jet pump as shown in FIG. 8, and there are no protrusions in the passage through which the flowed material passes. When using an ordinary water ejector pump, there is a dead space in the passage through which the consignment passes, and some consignment stays there. This is a great obstacle to the preparation of dyes, which requires the accuracy of the unit of g. There is no room for dead space in the jet pump 30, and there is no risk of dye retention. The water sent to the plunger pump 31 through the valve 33 is discharged as high-pressure drive water, passes through the drive water passage 30e through the drive water inlet 30d of the jet pump 30, and passes from the annular spiral jet nozzle 30f to the delivery side passage 30h. It is jetted into a spiral jet water stream. A strong suction force is generated in the suction side passage 30g by this jet water flow, and the dye mixture solution is sucked from the suction port 30b. On the other hand, a strong discharge force is generated in the delivery side passage 30h, and this discharge force causes the dye mixed liquid to be discharged together with the driving water at the discharge port 30c.
And is sequentially sent to the liquid preparation tank 38 via the three-way valve 34, the passage 35, the three-way valve 36 and the passage 37 in FIG. A predetermined amount of auxiliary agent or dilution water is added in the solution adjusting tank 38, but if the amount of driving water used is large, there is a possibility that water will already be over when the dye is sent to the solution adjusting tank 38. . This is all the more because cleaning water is added from the cleaning rings 56 and 57. In a normal water ejector pump, the weight ratio between the driving water used and the dye mixture that is sucked in is 1: 1 to 1: 2, and a large amount of driving water is added, causing a case of water overrun. The expected preparation had to be done separately. On the other hand, in the above-mentioned hydrospiral jet pump 30, since the driving water is ejected in a spiral shape, the weight ratio of the driving water used and the dye mixture liquid to be sucked is about 1: 5, which is a very small amount of water. The dye mixture can be transferred. Therefore, when the jet pump 30 is used, there is no possibility of excess water. Still further, since the dye mixed solution can be fed by the driving water, the inside of the passage 35 can be washed, and the passage 35 can be washed.
The dye does not remain in the upper hopper 25, and the total amount of the dye initially adjusted in the upper hopper 25 is surely set in the desired preparation tank 38.
Can be supplied to. The cleaning water used for cleaning the upper and lower hoppers 25 and 28 and the driving water described above are supplied as they are to the liquid preparation tank as dilution water.

The liquid preparation tank 38 includes an agitator 41 and a level meter 40. After the auxiliary agent is added to the dye mixture liquid transferred to the liquid preparation tank 38, a predetermined amount of dilution water is added through a valve 39 and stirred by a stirrer 41 to finish as a dyeing liquid. The level meter 40 constantly monitors the liquid level to detect whether or not a predetermined amount of dilution water has been added. When the liquid preparation is completed, the finished dyeing liquid is taken out through the passage 51. Further, a plurality of liquid preparation tanks 38 are provided, and by switching the three-way valves 36, 43, 44, etc.,
The measured dye mixture liquid can be sent to any of the liquid preparation tanks 38.

Also, if necessary, the measured dye mixture liquid can be directly taken out on the floor without being sent to the liquid preparation tank by switching the three-way valve, or can be discharged to the drainage pit.

[Brief description of drawings]

FIG. 1 is a system diagram of a dye preparation device according to an embodiment of the present invention. FIG. 2 is a schematic diagram of a dye preparation system in which the present dye preparation device is used. FIG. 3 is a flowchart showing the operation sequence of the dye preparation system. FIG. 4, FIG. 5, and FIG. 6 are a plan view, a front view, and a side view, respectively, showing the constitution of the dye preparation device. However, the dye stock tank and the preparation tank are not shown. FIG. 7 is an overall perspective view of the dispenser. FIG. 8 is a sectional view of the jet pump. 1 ... Colorimeter, 3 ... CCM computer, 7 ... Host computer, 21 ... Dye stock tank, 24 ... Dispenser, 25 ... Upper hopper, 26 ... Electromagnetic balance, 30 ... Jet pump , 38 ... Dispensing tank.

Claims (1)

[Claims] 1. A dispenser for moving a desired discharge valve to a predetermined dye supply position, comprising a plurality of dye stock tanks, and a number of discharge valves corresponding to the respective dye stock tanks in a housing, and a dispenser for discharging from the dispenser. The upper hopper, which is mounted on an electronic balance such as an electromagnetic balance type, for receiving and measuring the dye to be measured, the lower hopper for receiving the dye mixture from the upper hopper, and the mixing received in the lower hopper. A dye preparation apparatus comprising: a jet pump that conveys liquid and a back pressure of a water jet, and a preparation tank that receives and prepares the transferred dye mixture solution.