JP2000202201A - Evaporative concentrator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small-sized, inexpensive and easy-to-operate evaporative concentrator. SOLUTION: In this evaporative concentrator 1 a circulating line is formed between the liq. evaporating part 100 including a storage vessel 110 for storing a liq. to be treated and a condensation part 21 for liquefying the vapor evaporated in the evaporating part 100, and an air current is generated through a blowing means 230 in the circulating line. While the height and temp. of the liq. in the vessel 110 are kept in a specified range, the amt. of the liq. evaporated or condensed in a fixed time is measured by a measuring means, and the concentration is judged to be finished when the measured amt. reaches a specified value.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an evaporating and concentrating apparatus for evaporating and condensing a liquid to be processed, such as a waste liquid of a photographic processing liquid.
In particular, it relates to an evaporative concentrator using a ventilation circulation system.

[0002]

2. Description of the Related Art An evaporating section for evaporating a liquid to be treated, a condensing section for liquefying the evaporated vapor to obtain a condensed liquid, and a gas circulation section provided between the evaporating section and the condensing section are provided. It has a circulation path and air blowing means for promoting gas circulation, and uses a reduced-pressure heat pump circuit to discharge a waste solution of a processing solution for a silver halide photographic light-sensitive material (hereinafter sometimes simply referred to as a photographic waste solution). Evaporative concentrators for processing are known.

[0003] Further, there is known an evaporative concentrator using a normal pressure boiling method.

Further, in the above-mentioned evaporative concentrator, an indirect heat pump, an electric heater, a steam heater and the like are known as heating means used for heating the liquid to be treated.

[0005]

The evaporative concentrator using the reduced-pressure heat pump circuit is a useful one that does not generate a high temperature in the liquid to be processed, but has a low processing capacity (for example, 2 (Evaporation concentration of 1 liter / hour or less) is required, the same number of parts as in the case of a high-capacity apparatus is required, and as a result, there is a limit to downsizing of the apparatus and it is difficult to reduce the cost. There is a problem.

[0006] In addition, a concentrated processing liquid (hereinafter referred to as a concentrated liquid) containing foreign substances remaining in the liquid to be processed or components that cannot be evaporated during the processing (hereinafter referred to as a concentrated liquid) is removed from the evaporating and concentrating apparatus at an appropriate time. Although it is necessary to eliminate the concentration, the above-mentioned device detects the temperature change of the heat medium and determines the completion of concentration.

However, as will be described later, it is difficult to determine the end of concentration by detecting a temperature change due to the influence of outside air or the like in an apparatus using a ventilation circulation system, and sometimes excessive concentration or insufficient concentration occurs.

Further, the evaporative concentrator requires some countermeasures against bubbles depending on the composition of the liquid to be treated, and the evaporative concentrator using a reduced pressure heat pump circuit requires an antifoaming agent, which is disadvantageous in terms of operability and cost. is there.

As the antifoaming agent, the solvent is water and an organic solvent.
There are various types, and organic solvents have long-term stability, but care must be taken when handling them as specified as dangerous goods by the Fire Service Law.

On the other hand, water is an emulsified product, has poor liquid preservability, and is difficult to manage in stock.

In addition, as described above, if the electric heater is simply used as the heating means, for example, the temperature of the evaporator is partially increased, and as a result, the efficiency of the liquid to be treated in the evaporator is reduced. It is not suitable for performing good heating.

Further, in the case of an evaporative concentrator using steam heating, a high temperature of 100 ° C. or more is required, and not only is the cost of the steam generating equipment high, but also harmful hydrogen sulfide gas This is extremely undesirable because it causes the generation of

The present invention has been made in view of the above points, and an object of the present invention is to provide a small, inexpensive, and easy-to-operate evaporative concentration apparatus.

[0014]

The object of the present invention can be achieved by the following constitution.

(1) A circulation path is formed between a liquid evaporator including a storage container for storing the liquid to be treated and a condenser for liquefying the vapor evaporated in the liquid evaporator. An evaporating and concentrating device configured to generate a gas flow via a blowing unit, wherein the liquid level and the temperature of the liquid to be treated in the storage container are maintained within a predetermined range for a predetermined time. The amount of liquid to be evaporated or condensed in the liquid to be treated is measured by a measuring unit, and when the amount of the liquid measured by the measuring unit reaches a specified value, it is determined that the concentration is completed, so that the concentration is determined to be completed. Evaporating concentrator.

(2) The evaporative concentrator according to (1), wherein, upon completion of concentration, the operation is stopped or the operation is stopped and a display warning is issued.

(3) When the concentration is completed, the concentrated liquid is automatically discharged from the storage container, and thereafter, the operation is automatically restarted.
5. The evaporative concentrator according to item 2.

(4) A circulation path is formed between a liquid evaporator including a storage container for storing the liquid to be treated and a condenser for liquefying the vapor evaporated in the liquid evaporator. An evaporating and concentrating device configured to generate a gas flow via a blowing unit, wherein the liquid level detecting unit detects a liquid level of the liquid to be processed in the storage container, and the liquid level detecting unit detects the liquid level. A liquid supply unit that is operated based on the result and that replenishes and supplies the liquid to be treated so as to maintain the liquid level in the storage container within a predetermined range; a heating unit that heats the liquid to be treated in the storage container; Temperature detecting means for controlling the heating means to maintain the liquid to be treated in the storage vessel within a predetermined temperature range, discharging means for discharging the condensed liquid generated in the condensing section out of the apparatus, and Discharging means for discharging the liquid to be treated. Measuring the amount of liquid to be evaporated or condensed for a certain period of time by measuring means while maintaining the liquid level and temperature of the liquid to be treated in the storage container within predetermined ranges; Wherein when the liquid amount measured in step (a) reaches a specified value, it is determined that concentration is completed.

(5) The evaporative concentrator according to (4), wherein the measuring means comprises integrating means for integrating the operating time of the liquid supply means.

(6) The evaporative concentrator according to the above (4), wherein the measuring means comprises an integrating means for integrating an energizing time to the heating means.

(7) The evaporating and concentrating apparatus according to (4), wherein the measuring means comprises integrating means for integrating the operating time of the discharging means for discharging the condensed liquid.

(8) Evaporation promoting means for enlarging the area of the gas-liquid interface between the liquid to be treated and the gas in the storage vessel is provided in the storage vessel so as to repeatedly enter and exit the liquid to be treated. The evaporation concentrator according to the above (1) or (4), characterized in that:

(9) The evaporation promoting means is formed of a plurality of disk-shaped plate members having a surface on a rotation axis and intersecting the axis and being arranged in parallel in the axial direction. The evaporative concentrator according to (8), wherein

(10) The evaporative concentrator according to the above (1) or (4), wherein the condenser is provided with an outside air cooling type heat exchange means.

(11) A circulation path is formed between a liquid evaporating section including a storage container for storing the liquid to be treated and a condensation section for liquefying the vapor evaporated in the liquid evaporating section. An evaporating and concentrating device configured to generate a gas flow via a blowing unit, wherein the evaporation promoting unit for enlarging an area of a gas-liquid interface between the liquid to be processed and the gas in the storage container, The storage container is provided in the storage container so as to repeatedly perform the in-out movement with respect to the liquid to be processed, and the storage container is formed of a plastic container and a metal plate integrated with the inside of the container via a packing. An evaporating and concentrating apparatus having a configuration in which a heating means is connected to a space provided between the metal plate and the plastic container and a heating medium is filled.

(12) The evaporative concentrator according to (11), wherein the metal plate is made of a titanium material.

(13) The evaporation promoting means is formed of a plurality of disk-shaped plate members having a surface on a rotation axis and in a direction intersecting the axis and being arranged in parallel in the axial direction. The evaporative concentrator according to the above (11), which is characterized in that:

(14) The evaporation promoting means is constituted by a plurality of disk-shaped plate members having a surface on a rotation axis and in a direction intersecting the rotation axis and arranged in parallel with each other in the axial direction. Further, the metal plate is made of a titanium material, and a rubbing member for rubbing the surface of the titanium material when the evaporation promoting means rotates is provided integrally with the evaporation promoting means. The evaporating and concentrating apparatus according to (1).

(15) The evaporative concentrator according to (11), wherein the heat medium is water.

(16) The rubbing member is constituted by a part of an outer periphery of the disk-shaped plate material (14).
5. The evaporative concentrator according to item 2.

(17) The disk-shaped plate members are arranged in parallel with each other at a predetermined interval.
The evaporative concentrator according to 4).

(18) In the above (1), (4) or (11), a temperature detecting means for detecting the temperature of the liquid to be treated is provided in the storage container or in the filling portion of the heat medium. ).

(19) The method according to any one of (1), (4) and (11), wherein the temperature of the liquid to be treated in the storage container is controlled at 40 ° C. to 65 ° C. Evaporative concentrator.

(20) A circulation path is formed between a liquid evaporator including a storage container for storing the liquid to be treated and a condenser for liquefying the vapor evaporated in the liquid evaporator. An evaporating and concentrating device configured to generate a gas flow via a blowing means, wherein the evaporating promoting means for enlarging a gas-liquid interface between the liquid to be treated and the gas in the storage container comprises: In addition to providing so as to repeat the ingress and egress movement with respect to, the foam detection means is provided separately on the liquid surface of the liquid to be treated in the storage container, during operation,
The evaporation concentrator is configured to stop the movement of the evaporation promoting means when the foam detection means detects a foam.

(21) A circulation path is formed between a liquid evaporator including a storage container for storing the liquid to be treated and a condenser for liquefying the vapor evaporated in the liquid evaporator. An evaporating and concentrating device configured to generate a gas flow via a blowing means, having a surface in a direction intersecting a rotation axis, and a plurality of disc-shaped plate members in the rotation axis direction. Evaporation promoting means provided in the storage container arranged in parallel, a drive source for rotating the evaporation promotion means, and a liquid level detecting means for detecting a liquid level of the liquid to be treated in the storage container A liquid supply unit that is operated based on a detection result of the liquid level detection unit and replenishes the liquid to be processed into the storage container, and a liquid level of the liquid to be processed is higher than the liquid level detection unit. Foam detection means provided at a high position, If the stage is detected bubbles, the drive source as well as the non-operation of the steam promoter means, evaporative concentration apparatus, characterized in that constructed as to continue the operation of the blowing means.

(22) a heating means for heating the liquid to be treated, an outside air cooling type heat exchange means provided in the condensing section,
The apparatus according to (21), wherein the apparatus further comprises a configuration in which the operation of the heating unit and the heat exchange unit is continued even when the foam detection unit detects a bubble.

(23) If the bubble detection by the bubble detecting means is not detected within a predetermined time after the movement of the evaporation promoting means or the operation of the driving source is stopped, the evaporation promoting means or the driving source is turned off. The evaporating and concentrating apparatus according to the above (20) or (21), wherein the evaporating and concentrating apparatus is configured to be operated to return to a normal operation state.

(24) If the undetected information is not obtained by the foam detecting means within a predetermined time after the movement of the evaporation promoting means or the operation of the driving source is stopped, the operation is stopped and a display warning is issued. The evaporating and concentrating apparatus according to (20) or (21), wherein the apparatus is configured to perform the operation.

(25) If the bubble detection by the bubble detecting means is not detected within a predetermined time after the movement of the evaporation promoting means or the operation of the driving source is stopped, the evaporation promoting means or the driving source is turned off. When configured to operate to return to the normal operation state, when the operation stop and normal operation of the evaporation promoting means or the driving source is repeated,
The evaporative concentrator according to the above (20) or (21), wherein the operation is stopped and a warning is displayed.

(26) The liquid (1), (4), or (1), wherein the liquid to be processed is a waste liquid of a photographic processing liquid.
The evaporative concentrator according to any one of 1), (20) and (21).

(27) An evaporative concentrator characterized in that a bubble discharging means for discharging bubbles is provided in an evaporating portion of a liquid to be processed which is heated in a storage container and becomes a vapor.

(28) The evaporating and concentrating apparatus according to (27), wherein the discharged foam is returned to a tank for storing a liquid to be treated via a discharging means.

(29) A bubble detecting means for detecting bubbles and a foam discharging means for discharging bubbles are provided in the evaporating portion of the liquid to be treated which is heated and turned into vapor in the storage container, and the foam detecting means detects the bubbles. An evaporating and concentrating apparatus characterized in that when detected, the foam discharging means is operated.

(30) An evaporative concentrator characterized in that a bubble eliminating means for eliminating bubbles is provided in an evaporating portion of a liquid to be treated which is heated in a storage container to become a vapor.

(31) Evaporation promoting means having a surface in a direction intersecting with the rotation axis and having a plurality of disk-shaped plate members arranged in parallel in the direction of the rotation axis is adapted to enter and exit the liquid to be treated. (27), (29) or (3), which is provided in the storage container so as to repeatedly perform the exercise.
The evaporative concentrator according to any one of 0).

(32) A condensing section for liquefying the vapor evaporated in the evaporating section of the liquid to be treated is provided, and a circulation path is formed between the evaporating section and the condensing section. The evaporative concentrator according to any one of (27), (29) and (30), characterized in that a gas flow is generated via the means.

(33) A liquid evaporator including a heating means and a storage container for storing the liquid to be processed, a condenser for liquefying the vapor evaporated in the liquid evaporator to obtain a condensate, and a liquid evaporator And a circulation path formed between the condenser and the condensing section, wherein the evaporating and concentrating apparatus is configured to generate a gas flow in the circulation path via a blowing means, wherein the heating means Built-in, and provided a bathtub for storing a heat medium outside the storage container, via the heated heat medium,
In addition to being configured to heat the liquid to be treated in the storage container, the evaporating section of the liquid to be treated is provided with a foam discharging means for discharging bubbles or a foam disappearing means for eliminating bubbles. Evaporation concentrator.

(34) The evaporative concentrator according to any one of the above (30) or (33), wherein the foam disappearing means is a heating means.

(35) The liquid to be processed is a waste liquid of a photographic processing liquid.
(30) or the evaporative concentrator according to any one of the above (33).

(36) A circulation path is formed between a liquid evaporator including a storage container for storing the liquid to be treated and a condenser for liquefying the vapor evaporated in the liquid evaporator, and a circulation path is formed in the circulation path. An evaporating and concentrating apparatus configured to generate a gas flow through a blowing unit, wherein the storage container is formed of a titanium material, and has a space outside a lower part of the storage container and a space via a packing. A plastic container is integrally provided, and a heating means comprising an electric heater is connected to a space provided between the storage container and the plastic container, and a heating medium is filled. Evaporation concentrator.

(37) The evaporating and concentrating apparatus according to (36), wherein the storage container is formed by press drawing.

(38) The above-mentioned (36), wherein a discharge port is provided at the bottom of the storage container, and a discharge means for taking out the concentrated liquid of the liquid to be treated is detachably provided at the discharge port.
5. The evaporative concentrator according to item 2.

(39) Evaporation promoting means having a surface in a direction intersecting with the rotation axis and having a plurality of disk-shaped plate members arranged in parallel in the direction of the rotation axis is used to enter and exit the liquid to be treated. The evaporating and concentrating device according to (36), wherein the evaporating and concentrating device is provided in the storage container so as to repeatedly perform the exercise.

(40) A temperature detecting means for detecting the temperature of the liquid to be treated is provided, and the temperature of the liquid to be treated is set in the range of 40 ° C. to 65 ° C. based on the detection result of the temperature detecting means. The evaporating and concentrating apparatus according to (36), wherein the heating means is configured to control the energization.

(41) The evaporative concentrator according to (36), wherein the liquid to be processed is a waste liquid of a photographic processing liquid.

(42) A circulation path is formed between a liquid evaporator including a storage container for storing the liquid to be processed and a condenser for liquefying the vapor evaporated in the liquid evaporator. An evaporating and concentrating apparatus configured to generate a gas flow via a blowing means, wherein an external air cooling type heat exchange means is provided in the condensing section, and the gas flow is directed from an inlet side to an outlet side. Wherein the heat exchange means is disposed such that the position of the bottom surface is lowered according to the following.

(43) The evaporative concentrator according to (42), wherein the heat exchange means is located above the liquid evaporator.

[0058]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a conceptual diagram showing the overall and basic configuration of an evaporative concentration apparatus 1 according to the present invention, and FIG. 2 is a diagram showing a liquid to be treated and an evaporation promoting means for increasing the area of a gas-liquid interface. FIG. 3 is a schematic view showing a main part of the outside air cooling type heat exchange means.

In the figure, an evaporating and concentrating apparatus 1 mainly includes a lower frame including a liquid evaporating section (hereinafter, simply referred to as an evaporating section) 100 for evaporating a liquid to be treated (hereinafter, sometimes simply referred to as a liquid or waste liquid). It comprises a body 10 and an upper frame 20 having a function of condensing (liquefying) the evaporated vapor.

The upper frame 20 and the lower frame 10 are kept in an air-tight state via a suitable sealing member S such as rubber and can be separated from each other (the upper frame and the lower frame are separated from each other). Can be removed).

First, the configuration of the lower frame 10 will be described.

Reference numeral 2 denotes a motor 30 and a heating means H which will be described later.
And a power switch for supplying power to the actuators and starting up various actuators. Reference numeral 3 denotes an operation switch for executing a predetermined sequence via a control unit C to be described later.
Is a reset means (reset switch), and 5 is a display section for giving the switches and various display warnings, which is provided on the front surface of the lower frame.

The energization of the heating means H may be performed by turning on the operation switch.

The evaporator 100 in the lower frame 10
Is a storage container 110 that stores an appropriate amount of liquid, and enters and exits the liquid in the storage container by circulating motion, reciprocating motion, and the like (immersed in the liquid and exposed from the liquid).
Evaporation promoting means 113 which repeats movement (rotation in the embodiment); and heating means H (hereinafter, referred to as an oil-filled heater, a cast-in heater, etc.) provided at the bottom of the storage container.
The heater H) is formed as a main component.

As shown in a second embodiment described later, the heater H is built in a bathtub provided outside the storage container 110, and is stored in the bathtub, for example, a heat medium made of condensed liquid. Can be used to heat the liquid in the reservoir via

In the case of this configuration, compared with the configuration in which the liquid is directly heated by the heater H, the electric heating area can be increased, more uniform heating can be promoted, and the temperature of the storage container can be partially increased. Is preferred because there is no

The ON / OFF control of the heater H is performed by a computer based on the detection result of the temperature detecting means 111 such as a bimetal provided near the heater, so that the liquid is maintained in a predetermined temperature range.

The set temperature can be varied according to the type of the liquid to be processed or the processing capacity of the apparatus to be applied. In the embodiment, the liquid is a photographic waste liquid and the liquid temperature is less than 70 ° C. To keep it.

This is to prevent harmful and odorous hydrogen sulfide gas from being generated by thermal decomposition of photographic waste liquid at 70 ° C. or higher.

The preferred temperature range is from about 30 ° C. to less than 70 ° C., and the more preferred range is from about 40 ° C. to about 65 ° C.

In the embodiment, the liquid temperature is 58 ° C.
Maintained in the range of ６５65 ° C.

This temperature range is a safe range for handling and requires less energy than the normal pressure boiling method.

The storage container 110 is formed by press-drawing a metal plate, particularly a titanium material, and the bottom shape of the container is similar to a part of the shape of the evaporation promoting means 113 or a motion locus. When viewed from one side, it is configured to become gradually thinner toward the lower part (see FIG. 4).

In the present embodiment, when viewed from the left and right side surfaces in FIG.

The evaporation promoting means 113 is provided in the storage container 1.
Bearings (not shown) provided on side walls 114 and 115 of ten
, And is adapted to rotate by obtaining the rotational power of the motor 30.

The motor 30 is intermittently driven by turning on the power switch 2 and continuously driven by turning on the operation switch 3.

Instead of the above method, the motor control may be performed by intermittently driving the power switch ON for a predetermined time and thereafter continuously driving the motor. The operation of the means 4 may be configured to be able to return to the continuous driving state.

On the rotating axis J, the width occupied by the evaporation promoting means 113 in the axial direction is such that the width occupies substantially the same width as one width of the storage container 110 (the width in the left-right direction in FIG. 1). Having

The evaporating means 113 has a structure in which a plurality of disk-shaped plate members 113-1 are arranged in parallel on the axis J and their positions are fixed.

In this embodiment, the disk J has a surface in a direction intersecting with the axis J (for example, a substantially vertical direction), and has a large number of disk-shaped plate members 113-1 (only a few sheets) in the axial direction. (Referenced)) parallel to each other,
It is configured by fixing.

The fitting position of the disc-shaped plate to the shaft J may be at the center or at a position shifted from the center.
It is central in the embodiment.

The disk-shaped plate members 11 adjacent to each other
3-1 are arranged at a predetermined interval (the interval between opposing planes is about 2 mm).

The number, shape, interval, material, etc. of the plate materials are as follows:
It can be appropriately determined according to various conditions.
mm or irregular intervals, and the shape can be an appropriate shape such as a polygon.

Further, as materials, not only metals such as stainless steel, but also PPE, PPS, glass-containing P
Plastic such as P may be used. In the case of metal, the thickness is about 0.3 mm to 2 mm, and in the case of plastic, the thickness is about 0.5 mm to 3 mm.

However, the material may be thicker or thinner. The point is that a material that does not cause a problem with the target liquid and has sufficient strength to maintain the shape has a smaller thickness. Is preferred.

The disk-shaped plate material in the embodiment was made of a PET (polyethylene terephthalate) film having a thickness of about 0.25 mm.

The evaporation promoting means has a diameter of about 30.
It comprised using the disk-shaped plate material of 0 mm 30 sheets.

The rotation speed of the disc-shaped plate 113-1 is 1 to
The rotation speed is preferably 20 rotations / minute, and more preferably 1 to 3 rotations / minute in consideration of problems such as droplets of liquid and generation of bubbles.

However, if the bubbles and the like can be removed, the number of rotations may be further increased.

The power transmission system from the motor 30 to the evaporation promoting means can be appropriately determined such as a gear train (gear connection), a combination of a pulley and a belt, a combination of a gear and a belt, a combination of a chain and a sprocket, and the like. The degree is wide.

FIG. 2 schematically shows the relationship between the evaporation promoting means 113 and the liquid level in the storage container.

That is, the axis J of the evaporation promoting means 113 is located slightly above the liquid surface, and in this embodiment, at least a part of the outer periphery of the means is rotated by the rotation of the evaporation promoting means 113 to the bottom surface of the storage container 110. (Bottom wall).

The relationship between the outer periphery of the evaporation promoting means 113 and the bottom surface of the storage container 110 is configured as described above because the processing of the liquid including the rotation of the evaporation promoting means 113 causes the storage container 110 to rotate. This is to prevent a concentrated liquid (concentrate) containing a precipitate or the like which is expected to be deposited on the bottom surface from sticking to the bottom surface as much as possible.

From this, it can be said that the evaporation promoting means 113 is also a rubbing means (a rubbing member) for the bottom surface of the storage container, or has a function of a rubbing means.

Note that, as shown in FIG.
-1 is formed on a part of the outer periphery thereof in a direction intersecting with the surface of the disk-shaped plate material, and the fin is formed in the storage container 11.
It may be configured to make light contact with the bottom surface of the zero.

As will be understood from the above, the rotation of the evaporation promoting means 113 causes the portion which initially protrudes from the liquid to be processed to be buried in the liquid to be processed, and then is again exposed from the liquid to be processed. The in-and-out movement enlarges the gas-liquid interface, promotes efficient evaporation processing, and produces a stable evaporation amount.

In the storage container 110, an appropriate liquid level detecting means FS (FIG. 2) such as an electrode type liquid level sensor or a float sensor is provided.
The liquid to be processed in a liquid tank 60 to be processed, which will be described later, is supplied from a constant displacement pump based on information from the liquid level detecting means (a detection result indicating that the liquid level is insufficient or the liquid level is normal). The liquid is fed (refilled) into the storage container 110 via the liquid supply means 70, and the feeding is stopped to maintain the liquid level within a predetermined range (control).

Further, based on the detection result of the liquid level detecting means FS, if a shortage of liquid is still detected after a preset operation time of the liquid supply means 70, the operation is interrupted (stopped) or the operation is stopped. A display warning is issued on the display unit 5 at the same time as the interruption.

The term "interruption of operation" as used herein means that the power supply to the heater H is cut off and the operation of the liquid supply means 70 is deactivated.

The above-described configuration is based on the judgment that there is no liquid to be supplied in the liquid tank 60,
This is to prevent an unexpected situation.

After the operation of the liquid supply means 70, if the liquid level detection means FS detects the presence of liquid, the operation is automatically restarted.

Reference numeral 40 denotes a concentrated liquid recovery container provided at the lower portion of the storage container 110, which receives a concentrated liquid flowing out of an outlet 117 provided at the bottom of the storage container by the suction operation of the electromagnetic solenoid 50. I have.

In connection with the discharge port, actually, a discharge pipe 118 (FIG. 4, FIG.
The discharge pipe is detachable from the discharge port 117 of the storage container.

By the way, when the concentration is completed, the amount of liquid which evaporates or condenses the liquid to be treated in a certain time is measured by an appropriate measuring means, and when the amount of liquid measured by the measuring means reaches a specified value, It is determined that concentration has been completed.

The measurement does not directly measure the amount of the evaporating liquid or the amount of the condensed liquid. In the embodiment, for example,
An integrating means for integrating the operating time of the constant displacement pump as the liquid supply means 70 or an integrating means for integrating the energizing time to the heater H, or a discharging means for discharging the condensate as described later. When using a type pump,
The integrating means for integrating the operating time of the pump is used as the measuring means, and the amount of the evaporating liquid or the amount of the condensed liquid is indirectly measured.

The measurement is performed by evaporating the liquid while maintaining the liquid amount and the liquid temperature in the storage container in a predetermined range, and energizing time to the heater (actually, energizing time in a steam generating state) or The relationship between the operation time of the constant displacement pump (liquid supply means and condensate discharge means) and the degree of concentration can be easily obtained by experiments.

Therefore, a prescribed value (energization time) relating to the heater or the like corresponding to the concentration degree to be obtained is taken into a computer, and whether or not the prescribed value is reached is monitored.
It is possible to accurately determine (detect) the completion of concentration, and to suppress variations such as excessive concentration and insufficient concentration.

For example, in the embodiment, the amount of liquid in the storage container 110 is 5 liters, the amount of evaporation is 350 ml / hour, and when the enrichment is 7 times, the energization time to the heater is about 100 hours. Thus, the desired concentration is completed.

Instead of using the integrating means, for example, the amount of condensate accumulated is detected by an appropriate detecting means, and the relationship between the amount of condensate and the degree of concentration is obtained.
The end of concentration can also be determined.

Further, in the present embodiment, the automatic stop of the operation or the automatic stop and the display warning are performed when the concentration is completed.

Further, in connection with the stop of the operation, the ball valve (discharge means) on the discharge pipe 118 is automatically opened,
After the concentrated liquid is automatically discharged, the operation is automatically restarted.

Here, the operation of stopping the operation means energization of the heater H and replenishing operation of the liquid supply means 70.

Further, detecting means such as a liquid amount detecting means or a weight detecting means is associated with the concentrated liquid collecting container 40 so that the concentrated liquid collecting container is filled during or during the collecting of the concentrated liquid. When it becomes clear, the discharging operation is stopped based on the detection information, and the operation is automatically continued after the container is replaced.

Next, the structure of the upper frame 20 will be described.

Reference numeral 21 denotes a condensing section (heat exchanging section), which is provided with an outside air cooling type heat exchanging means having the axial fan F and the heat exchanger 210 as main elements.

The condensing section 21 is a place where the vapor of the liquid to be processed evaporated in the evaporating section 100 is cooled and liquefied. The evaporating section 100 and the heat exchanger 210 communicate with each other through a gas flow path L1. ing.

As means for forcibly sending steam into the flow path L1, a blowing means 230 composed of a sirocco fan (multi-blade fan) is provided.
And on the opposite side.

That is, the blowing means 230 is associated with the evaporation promoting means 113 so that the gas flow generated by the blowing means passes between the disc-shaped plate members 113-1 exposed from the liquid surface of the liquid. In addition, there is an association so that the steam after passing through the disc-shaped plate material is sent to the flow path L1.

L2 is a flow path for connecting the heat exchanger 210 and the blowing means 230, and L3 is a flow path for connecting the blowing means 230 and the evaporating section 100.

Although the air blowing means 230 is included on the way, a gas circulation path L is formed between the evaporating section 100 and the condensing section 21 by the three flow paths L1, L2, L3 as described above. .

The storage container 110 and the evaporator 10
0, the components formed by the heat exchanger 210 and the circulation path L, etc., and the evaporating and concentrating apparatus 1 are substantially in the form of a closed container shielded from the outside, and do not emit odor to the outside.

As shown in FIG. 3, the heat exchanger 210 has a first passage communicating with an inflow passage (outside air introduction means) and a discharge passage (outside air discharge means) of the outside air blown by the axial fan F. A passage 213, and a second passage 215 connected to the flow path L1 and the flow path L2 forming a gas circulation path,
Further, it has a discharging means D comprising a drain for discharging the condensate obtained by heat exchange.

The heat exchanger 210 has two passages 213 and 215 as described above, and both passages are constituted by covering a thin plate T bent in a zigzag shape with four walls 217.

Both ends of the thin plate T are integrated with left and right side walls 217 in the figure by bonding or the like so as not to leak gas.

Note that the second passage 215 is configured so that there is no gas leakage in the front and rear (in the direction of front and back with respect to the paper surface) in FIG. I have.

Although the thin plate T may be a metal or a plastic molded product, in the embodiment, stainless steel having a thickness of about 0.1 mm is used, and the interval between adjacent plates is about 3 mm.

The configuration of the heat exchanger 210 is simple.
This can contribute to miniaturization and cost reduction of the device.

Reference numeral 60 denotes a waste liquid discharged from a processing apparatus 90 such as an automatic photographic developing apparatus for processing a silver halide photographic light-sensitive material (for example, a mixed waste liquid of a color negative film processing waste liquid and a color paper processing waste liquid). ) To be treated (hereinafter, referred to as a waste liquid tank), and is connected to the storage container 110 by a pipe via a liquid supply means 70 composed of a constant displacement pump.

It is more preferable to provide a capacity detecting means in connection with the waste liquid tank 60 because the following control can be performed.

That is, after the liquid supply means 70 has moved for a preset time, a shortage of liquid in the storage container 110 has been detected by the liquid level detection means FS. If it is detected that there is no replenishing liquid in the waste liquid tank 60, the heater H and the liquid supply means 7
By making 0 inactive, occurrence of an unexpected problem can be prevented.

Numeral 80 denotes a condensate tank for storing the condensate discharged through the discharge means D provided in the heat exchanger 210.

Although not shown, a liquid level detecting means is provided in connection with the condensed liquid tank 80, and when the liquid level detecting means detects that the condensed liquid has reached a predetermined amount, the heater H and the heater H are connected. The air supply unit 70 and the condensing unit 21 (substantially, an axial fan that sends outside air to a predetermined flow path of the heat exchanger) after disabling the liquid supply unit 70 and a predetermined time after the detection. ) Is stopped.

[0134] This enables stable and odor-free operation for a long period of time.

At this time, the fact that the amount of the condensed liquid has reached a predetermined amount and the inactivation of the air blowing means, the evaporation promoting means, and the condensing unit are displayed on the display unit 5.

The display is configured to use one display means and to perform different displays.

The control of the heater H, the motor 30, the liquid supply means 70, the axial fan F, the electromagnetic solenoid 50, etc.
In addition, including various display means in the display unit, the overall sequence control of the evaporative concentration apparatus 1 is configured to be performed by a control unit C including a CPU (Central Processing Unit).

Next, the basic operation will be briefly described.

When the power switch 2 is turned on, the heater H and the motor 30 are energized.

Thereafter, when the operation switch 3 is turned on, the evaporation promoting means 113 switches from intermittent rotation to continuous rotation.

The temperature of the liquid in the storage container 110 in the evaporating section 100 gradually rises, and eventually evaporates to generate steam.

During this time, the blowing means 230 and the axial fan F
Start driving.

The steam receives the air blow from the air blowing means 230 and enters the heat exchanger 210 of the condensing section 21 via the flow path L 1 constituting the circulation path L.

Here, the steam moves in the second passage 215, but is blown by the axial fan F and cooled and liquefied by the outside air flowing in the first passage 213.

That is, the gas sent from the evaporating section 100 and
The outside air based on the operation of the axial fan F flows into both sides of the thin plate T constituting the heat exchanger (the first passage 213 and the second passage 21).
While 5) proceeds as separate layers, heat exchange between the two occurs.

The condensed liquid obtained by the heat exchange is sequentially stored in the condensed liquid tank 80 via the discharging means D.

Also, the concentrate (concentrated liquid) which may stick to the bottom surface of the storage container 110 is scraped off by the outer peripheral portion (scraping member) of the disc-shaped plate material 113-1. The phenomenon of solidification and fixation can be prevented as much as possible.

The basics of the control during the above processing are as follows.

As the processing time elapses, the liquid in the storage container 110 decreases, and the information is stored in the liquid level detecting means F.
When obtained from S, the liquid supply unit 70 is driven for a predetermined time via the control unit C, and the liquid to be treated in the waste liquid tank 60 is replenished to the storage container.

If the liquid level detecting means FS detects the presence of the liquid within the predetermined time or immediately after the predetermined time elapses, the operation is continued. The heater H and the liquid supply unit are deactivated (operation is interrupted), and a display to that effect is displayed on the display unit 5 at the same time.

In the configuration in which the capacity detecting means is provided in connection with the waste liquid tank 60, and the capacity detecting means detects the shortage of the liquid to be processed in the tank, the same measures as described above are taken. Do.

Further, after a predetermined time has elapsed from the interruption of the operation, the liquid supply means 70 is automatically operated, and when the detection result of the liquid level detection means FS indicates that there is liquid, the reset means 4 is reset. The operation is returned to the normal operation, and if the liquid is insufficient even after the set time has elapsed, the operation is interrupted and a display warning is given on the display unit 5.

When the amount of condensed liquid collected in the condensed liquid tank 80 has reached a predetermined amount, the heater H and the liquid supply means 70 are deactivated, and after a certain time from the detection, the air blowing means 230 Then, the operations of the evaporation promoting means 113 and the condenser 21 are stopped.

The display unit 5 indicates that the condensed liquid in the condensed liquid tank has reached a predetermined amount and that the operation of the blowing means 230 and the like has been stopped.

At this time, one display means is used and different displays are performed.

When the completion of concentration is determined based on the information from the measuring means as described above, the control section C controls the electromagnetic solenoid 50, and the concentration is performed through the discharge means such as the discharge port 117 and the on-off valve. The liquid is automatically collected in the concentrated liquid collection container 40.

Almost at the same time as the start of the recovery operation, the heater H and the liquid supply means 70 are deactivated, and at the same time, the display unit 5 displays the end of concentration and the deactivation of the heater H and the like.

After a lapse of a predetermined time during which the collecting operation is performed, the on-off valve is closed, and the operation is automatically restarted, and at the same time, the display on the display unit 5 is turned off.

FIG. 4 is a schematic diagram showing a second embodiment.
(A) is a front view, (b) is a side view.

In the drawing, the same means (member) or means having the same function as the above-mentioned means (member) are denoted by the same reference numerals.

The configuration of FIG. 4 is basically the same as the configuration of the first embodiment, including various controls. The major difference is that the bathtub 120 is arranged outside the storage vessel 110 and The bath is filled with a heat medium made of condensed liquid to form a water bath structure, and a foam countermeasure is taken.

In the figure, the processing apparatus 90, the waste liquid tank 60, and the condensate tank 80 are shown only in a side view.

The power switch 2, the operation switch 3,
The reset unit 4 and the display unit 5 are shown as one frame as an aggregate, and the measuring unit and the control unit C for detecting the end of concentration are not shown, but they are the same as those in the first embodiment. To work.

The lower frame 10 enabling the installation of the storage container 110 and the concentrated liquid recovery container 40, and the upper frame 20 having the condensing section 21 and most of the circulation path are hermetically sealed via the sealing member S. The upper frame 20 is integrated,
The lower frame 10 is configured to be detachable.

In the storage container 110, the disk-shaped plate 1
The same evaporation promoting means 113 as in the first embodiment, which is constituted by arranging a large number of parallel arrangements 13-1 on a rotating shaft J, is provided rotatably.

Although the axis J is buried in the liquid level in the storage container 110, the axis J may be positioned above the liquid level.

Outside the storage container 110, there is provided a bathtub 120 which is in close contact with the outer surface (wall) of the storage container.

The bathtub 120 is filled with condensate obtained through the heat exchanger 210, and is provided with a U-shaped heater H and temperature detecting means 111 made of bimetal.

As the heat medium, tap water can be used in place of the condensate.

The temperature detecting means 111 is provided in the bathtub 12.
The temperature of the liquid to be treated in the storage container is detected through the condensate stored in the storage container.

Note that the temperature detecting means 111 may be provided in the storage container so as to directly detect the temperature of the liquid to be treated.

ON / OFF of energization to the heater H
Is based on the information from the temperature detecting means 111.

The set temperature of the heater H is as follows:
To 65 ° C.

What is provided outside the bathtub 120 is
A heat insulating member 130 having a shape similar to that of the bathtub.

The discharge port 117 provided at the bottom of the storage container 110 is connected to the concentrated liquid recovery container 40 via a discharge means including an appropriate pipe (discharge flow path), a manual ball valve (open / close valve) B, and the like. It is designed to communicate.

The discharge port including the ball valve B is
In consideration of the cleaning of the storage container, the storage container 110 is configured to be detachable from the storage container 110.

The use of the ball valve B allows, for example, easy discharge of the liquid containing high-concentration sludge in the evaporative concentration treatment, and contributes to low cost.

FS indicates a liquid level detecting means such as a float sensor or an electrode liquid level sensor provided in the storage container 110.

Here, a line 150 adjacent to the line including the liquid supply means 70 whose operation is controlled based on the detection result of the liquid level detection means FS is a line for discharging bubbles, and a constant volume is provided in the discharge path. Discharge means 151 consisting of a pump
Having.

One end of the pipe forming the line 150 is connected to the waste liquid tank 60, and the other end is connected to the evaporating section 1.
It is at 00.

In other words, the other end of the line 150 is
In the storage container 110, it is located on the liquid level downstream in the flow direction of the gas by the blowing means 230.

Numeral 153 is a bubble detecting means comprising an electrode liquid level sensor, which is provided near the position where the other end of the line is located and higher than the liquid level detecting means FS.

The foam discharging means 151 is operated based on the foam detection result of the foam detecting means 153, and plays a role of sucking the foam and returning it to the waste liquid tank 60.

Instead of the above configuration, a suitable heating means (heater) may be provided as a bubble elimination means in the area near the bubble detection means. This embodiment can further simplify the configuration and control. it can.

Such a structure is adopted, for example, when a liquid having a particularly strong foaming property is a target, a bubble is generated, the bubble moves due to the air flow caused by the blowing means 230, and the liquid contains the condensing section 21. This is to prevent entry into the flow path as much as possible.

When the foam discharging means 151 is operated in conjunction with the detection of the foam by the foam detecting means 153, the movement of the evaporation promoting means 113 is stopped (this is synonymous with the non-operation of the driving source comprising the motor 30). It is configured as follows.

It is more preferable to give a display warning together with stopping the movement of the evaporation promoting means.

In this case, it is preferable to continue the operations of the blowing means 230, the heating means H, and the heat exchanging means without stopping them, because it suppresses a decrease in processing capacity.

Since the evaporation promoting means is a bubble generation source,
It is essential to stop.

If the bubble detection by the bubble detecting means 151 is not detected (not detected) within a predetermined time after the movement of the evaporation promoting means 113 is stopped, the evaporation promoting means is operated to perform normal operation. Return to the state, if the undetected information of the bubble is not obtained within the predetermined time, the blowing means 230,
The operation is stopped to stop the operation of the heating means H, the heat exchange means, and the like.

In this case, the heating means H is stopped first,
It is preferable to stop the blowing means 230, the heat exchanging means, and the like when the temperature has dropped to the predetermined temperature.

In this case, it is preferable that the display is performed by the display means 5 when the operation is stopped.

Further, when the movement stop of the evaporation promoting means and the normal operation as described above are repeated, the operation may be stopped or the operation stop and a display warning may be given after an appropriate number of repetitions. it can.

It is natural that the count value of the integrating means as the measuring means is maintained irrespective of the presence or absence of the operation stop.

The storage container is formed by sealing a metal plate, particularly a titanium material plate, inside a bathtub 120 formed of a plastic such as PP, PPO or PPE via a packing made of rubber or the like. It is composed.

However, considering that it takes time to integrate the metal plate with the bathtub 120 by means of screws or the like, a plate made of titanium material is press-drawn and formed into a container. It is preferable to integrate them through a packing.

The material, thickness and the like of the bathtub and the storage container can be appropriately selected so as to be compatible with the liquid to be treated, the heating temperature or the required strength.

As in the case of the first embodiment, the upper frame body 20 has a gas circulation path L including flow paths L1, L2, L3 and a blowing means 230 composed of a sirocco fan (multi-blade fan).
And a condensing section 21 including an outside air cooling type heat exchange means having an axial fan F and a heat exchanger 210 as main elements, and a motor 3 for driving the evaporation promoting means 113.
0 and a guide member G and the like.

Reference numeral 8 denotes a tube, which is provided below the flow path L2 so that a part of the condensed liquid obtained in the condensing section 21 can be dropped into the bathtub 120 by utilizing a difference in position height. It is.

The frame having the above structure, substantially the evaporating and concentrating apparatus 1, is in the form of a closed container which is shielded from the outside.
Does not emit odor to the outside.

The reason why the motor 30 is brought to the upper frame 20 side is that the evaporation promoting means 113 is removed for cleaning, or the evaporation promoting means is removed when cleaning the inside of the storage container 110. In this case, consideration is given to the ease of handling in the case of and the miniaturization of the apparatus by devising the arrangement.

Also, it is convenient to combine the means driven by electric control on the same side for repair or the like.

The motor 30 is provided behind the guide member G by an appropriate method, and is configured to be separable (removable) from the upper frame integrally with the guide member G.

The guide member G is provided with the evaporation promoting means 1.
13 has a guide surface formed by an arc having a diameter larger than the outer diameter of the disc-shaped plate material 113-1.

The guide member G is attached to the fixed portion of the frame with a guide surface having a predetermined gap with respect to a part of the outer periphery of the disc-shaped plate.

A flow path L1 formed between the evaporating section 100 and the condenser section 21 is formed substantially vertically upward with one side of the evaporating section as a base point, and has a horizontal bottom surface. Substantially through the heat exchanger 210), the flow path L2
Communicate with

The bottom of the heat exchanger is connected to the flow path L1.
Side position is higher than the flow path L2 side, that is,
In the figure, it is preferable to configure the inclined surface so as to be lower right.

As the heat exchanger 210 in the condensing section 21, the heat exchanger having the structure of the first embodiment can be applied similarly to the evaporation promoting means 113.

The flow path L2 and the flow path L3 are communicated with each other through the blowing means 230.
Numeral 0 is provided so that the suction port thereof is connected to the forming member of the flow path L2 which is bent leftward from the vertical direction, and exhaust gas is exhausted to the evaporating section 100 side.

The air velocity of the gas by the blowing means 230 is:
0.5 m between the evaporating section 100 and the control means.
/ M to 10 m / sec, more preferably 1 m / sec to 5 m / sec, and most preferably 1.5 m / sec to 3 m / sec.

[0211] If the wind speed is less than 0.5 m / sec, the processing capacity is lowered. If the wind speed is more than 10 m / sec, the liquid is liable to be scattered and undesirably scattered.

Regarding the detection of the completion of concentration, as described in the first embodiment, the integrating means for integrating the energizing time to the heater H, the operating time of the liquid supply means, and the like is used as the measuring means.

In addition to the above, the inlet of the condensed liquid tank is placed higher than the condensing section 21 and a condensed liquid is pumped up from a temporary storage tank using a constant volume pump (discharge means). In such a configuration, an integrating means for integrating the operating time of the discharging means can be used as a measuring means.

These measuring means (integrating means) are provided in a control section C (not shown).

FS-3 is a liquid level detecting means for detecting the level of the condensed liquid collected in the condensed liquid tank 80.

In the evaporative concentrator having the above structure,
The difference from the control in the first embodiment is as follows.

When the heater H is turned on, the operation switch is turned on.
And when the liquid level detecting means FS in the storage container 110 detects the presence of the liquid, the power can be supplied.

This configuration is for preventing the occurrence of an empty firing state such as an abnormal rise in liquid temperature.

The operation of the reset means 4 resets the processing amount and the processing display.

Further, in the processing, the liquid in the storage container 110 decreases with the passage of time, and when the information is obtained from the liquid level detecting means FS, the control unit C
The liquid supply means 70 is driven for a predetermined time to supply the liquid in the waste liquid tank 60 to the storage container 110. However, after a predetermined time has elapsed, if the liquid shortage is still detected, When the capacity detecting means FS-1 also detects that there is no liquid enough to supply, the heater H and the liquid supplying means 70 are deactivated (operation interrupted), and the display 5
Is displayed to that effect.

With this configuration, it is possible to determine the suspension of operation only once, as compared with a configuration in which the liquid supply means is operated several times periodically after the lapse of the predetermined time to determine whether or not operation is possible. It is.

Even if the operation is interrupted, the monitoring of the liquid volume in the waste liquid tank is continued, and when the supply becomes possible, the supply operation is automatically restarted and the operation is restarted. It is configured in.

The judgment of the completion of the concentration, the automatic discharge in conjunction with it, the automatic restart of the operation, and the like are the same as those described in the first embodiment.

Since the control associated with the bubble detection has been described in detail, redundant description will be omitted, and the evaporating and concentrating apparatus 1 having the above-described configuration will be omitted.
The process for obtaining the condensate and concentrate in
Since the processing is almost the same as that of the embodiment, the description is omitted.

Various controls can be easily achieved by the CPU.

It is preferable that the set temperature relating to the power supply control to the heater in the above embodiment can be changed according to the processing amount or the concentration.

Further, various controls in the first and second embodiments described above can be mutually useful.

The replenishment of the liquid to be treated into the storage container 110 can be performed by directly replenishing the liquid requiring treatment with a device for discharging the liquid.

FIG. 5 is a schematic diagram showing the structure of the evaporation promoting means and a power transmission system including a gear train for rotating the evaporation promoting means.

The means (members) given the above-mentioned reference numbers indicate means (members) having the same or similar functions as those described above.

In the figure, a plurality of disc-shaped plate members 113-1
Is a boss 113-3 provided at the center of each.
To be fitted.

A scraping member 112 for scraping a concentrated liquid or the like which is to adhere to the surface of the disk-shaped plate is interposed between the boss portions of the adjacent disk-shaped plates (same as between the plate-shaped plates). In the figure, only the portion that is idle on the axis J is shown).

The scraping member 112 is formed of a plate or a bar having a length longer than the radius of the disk-shaped plate.

Reference numeral 119 denotes a thick disk 119 provided on the outermost side.
The outer peripheral portion has a tooth profile (hereinafter, referred to as a disk with gears).

J1 is another shaft, which is the disk 119 with the gear.
Gears G1 and G2 are provided on the shaft, and the gear G2 meshes with a motor gear provided on the rotation shaft of the motor 30.

The above-described structure is used to remove the motor gear and the gear G2 when removing the structure (the integrally assembled structure) including the motor 30 together with the guide member G, or when removing the upper frame 20 from the lower frame 10. Can be easily separated between the gears, and the operability is good.

The evaporative concentration apparatus represented by the above embodiments is particularly useful as an evaporative concentration apparatus having a throughput of 2.0 liters per unit time, particularly 1.0 liter / hour or less. Yes, it is suitable for evaporating volatile components from a liquid to be processed containing a non-volatile component to obtain a precipitate of the non-volatile component or a solution having a high non-volatile component. Particularly, a processing solution for a silver halide photographic light-sensitive material. It is suitable for evaporating and concentrating waste liquid.

[0238]

According to the present invention, efficient evaporation and concentration can be achieved with a simple structure.
The device could be downsized, manufactured inexpensively, and improved in safety and operability.

Further, since the energy consumption is small and the airtightness can be increased, the liquid to be treated having an odor can be treated particularly with a sense of security.

[Brief description of the drawings]

FIG. 1 shows the overall structure of an evaporative concentrator according to the present invention, and
FIG. 2 is a conceptual diagram showing a basic configuration.

FIG. 2 is a schematic diagram showing a relationship between a liquid to be processed and an evaporation promoting means for increasing an area of a gas-liquid interface.

FIG. 3 is a schematic view showing a main part of an outside air cooling type heat exchange means.

FIGS. 4A and 4B are schematic diagrams showing a second embodiment, in which FIG. 4A is a front view and FIG. 4B is a side view.

FIG. 5 is a schematic diagram showing a configuration of the evaporation promoting means and a power transmission system including a gear train for rotating the evaporation promoting means.

FIG. 6 is a schematic view showing a part of an outer periphery of a disk-shaped plate member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Evaporation concentrating apparatus 10 Lower frame 20 Upper frame 21 Condenser 30 Motor 40 Concentrated liquid recovery container 50 Electromagnetic solenoid 60 Liquid tank to be processed 70 Supplying means 80 Condensed liquid tank 90 Processing device 100 Evaporator 110 Storage container 113 Evaporation promotion Means 113-1 Disc-shaped plate material 114, 115, 217 Side wall 117 Discharge port 210 Heat exchanger 213, 215 Passage 230 Blowing means B Ball valve C Control part D Discharge means F Axial fan G Guide member H Heating means J, J1 Shaft L circulation path L1, L2, L3 flow path

 ──────────────────────────────────────────────────続 き Continued on the front page F-term (reference) 2H016 CA00 4D034 AA20 BA01 CA12 CA21 4D076 AA07 AA16 AA22 BA30 CA05 CA08 CA19 CB04 CD04 CD16 CD50 DA02 DA22 DA35 EA02Y EA05Y EA12Y EA13Y EA15Y EA23Y EA24 EA43

Claims (43)

[Claims] 1. A circulation path is formed between a liquid evaporator including a storage container for storing a liquid to be treated and a condenser that liquefies vapor evaporated in the liquid evaporator. An evaporating and concentrating device configured to generate a gas flow through a blowing unit, wherein a liquid surface height and a temperature of the liquid to be treated in the storage container are maintained within a predetermined range, and the evaporating and concentrating device is used for a predetermined time. The amount of liquid to be evaporated or condensed of the liquid to be treated is measured by a measuring unit, and when the amount of the liquid measured by the measuring unit reaches a specified value, it is determined that the concentration is completed, and it is characterized in that: Evaporation concentrator. 2. The evaporating and concentrating apparatus according to claim 1, wherein an operation stop or an operation stop and a display warning are performed upon completion of the concentration. 3. The evaporation method according to claim 1, wherein the concentrated liquid is automatically discharged from the storage container with the completion of the concentration, and then the operation is automatically restarted. Concentrator. 4. A circulation path is formed between a liquid evaporator including a storage container for storing the liquid to be treated, and a condenser for liquefying the vapor evaporated in the liquid evaporator. An evaporating and concentrating device configured to generate a gas flow via a blowing unit, wherein a liquid level detecting unit that detects a liquid level of the liquid to be processed in the storage container, and a detection result of the liquid level detecting unit Liquid supply means, which is operated based on the above, and supplies and replenishes the liquid to be treated so as to maintain the liquid level in the storage vessel within a predetermined range; heating means for heating the liquid to be treated in the storage vessel; Temperature detecting means for controlling the means to maintain the liquid to be treated in the storage vessel within a predetermined temperature range; discharging means for discharging the condensed liquid generated in the condensing section to the outside of the apparatus; Discharging means for discharging the processing liquid. While maintaining the liquid level and temperature of the liquid to be treated in the storage container within a predetermined range, the amount of liquid to be evaporated or condensed in the liquid to be treated in a predetermined time is measured by a measuring means, Wherein the concentration is determined to be complete when the liquid volume measured in step (b) reaches a specified value. 5. The apparatus according to claim 4, wherein said measuring means comprises integrating means for integrating the operating time of said liquid supply means.
5. The evaporative concentrator according to item 2. 6. The evaporating and concentrating apparatus according to claim 4, wherein the measuring unit includes an integrating unit that integrates a current supply time to the heating unit. 7. The evaporative concentrator according to claim 4, wherein said measuring means comprises integrating means for integrating the operating time of said discharging means for discharging said condensed liquid. 8. An evaporation promoting means for enlarging an area of a gas-liquid interface between a liquid to be processed and a gas in the storage container is provided in the storage container so as to repeatedly enter and leave the liquid to be processed. The evaporative concentrator according to claim 1 or 4, wherein: 9. The evaporation promoting means is characterized in that it comprises a plurality of disc-shaped plate members having a surface on a rotation axis and in a direction intersecting the axis and arranged in parallel with each other in the axial direction. The evaporative concentration device according to claim 8, wherein 10. The condenser according to claim 1, wherein the condenser is provided with a heat exchange means of an outside air cooling type.
5. The evaporative concentrator according to item 2. 11. A circulation path is formed between a liquid evaporator including a storage container for storing the liquid to be treated and a condenser for liquefying the vapor evaporated in the liquid evaporator. An evaporating and concentrating device configured to generate a gas flow through a blowing unit, wherein the evaporating promoting unit for enlarging an area of a gas-liquid interface between the liquid to be processed and the gas in the storage container includes the evaporating unit. Along with providing in the storage container so as to repeatedly carry out the in-out movement with respect to the processing liquid, the storage container is formed of a plastic container and a metal plate integrated through packing, inside the container, In addition, a heating means is connected to a space provided between the metal plate and the plastic container, and a heating medium is filled therein. 12. The evaporative concentrator according to claim 11, wherein the metal plate is made of a titanium material. 13. The evaporation promoting means comprises a plurality of disk-shaped plate members having a surface on a rotation axis and in a direction intersecting the axis and arranged in parallel to each other in the axial direction. The evaporative concentration device according to claim 11, wherein 14. The evaporation promoting means is constituted by a plurality of disk-shaped plate members which have a surface on a rotation axis and intersect with the rotation axis and are arranged in parallel in the axial direction. 12. The method according to claim 11, wherein the metal plate is made of a titanium material, and a rubbing member for rubbing the surface of the titanium material is provided integrally with the evaporation promoting means when the evaporation promoting means rotates. The evaporative concentrator according to the above. 15. The evaporating and concentrating apparatus according to claim 11, wherein the heat medium is water. 16. The evaporating and concentrating apparatus according to claim 14, wherein the scraping member is constituted by a part of an outer periphery of the disc-shaped plate. 17. The evaporating and concentrating apparatus according to claim 14, wherein the disc-shaped plate members are arranged in parallel with each other at a predetermined interval. 18. The method according to claim 1, wherein a temperature detecting means for detecting a temperature of the liquid to be processed is provided in the storage container or in a portion filled with the heat medium. Item 7. The evaporative concentration device according to Item 1. 19. The temperature of the liquid to be treated in the storage container is
5. The method according to claim 1, wherein the temperature is controlled between 40.degree.
Alternatively, the evaporative concentrator according to claim 11. 20. A circulation path is formed between a liquid evaporator including a storage container for storing the liquid to be processed, and a condenser for liquefying the vapor evaporated in the liquid evaporator. An evaporating and concentrating device configured to generate a flow of gas through a blowing unit, wherein an evaporating promoting unit that expands a gas-liquid interface between the liquid to be processed and the gas in the storage container is provided on the liquid to be processed. In addition to providing the inlet and outlet movements repeatedly, the foam detecting means is provided separately above the liquid surface of the liquid to be treated in the storage container, and when operated, when the foam detecting means detects bubbles, An evaporative concentrator characterized in that the movement of the evaporation promoting means is stopped. 21. A circulation path is formed between a liquid evaporator including a storage container for storing the liquid to be treated and a condenser for liquefying the vapor evaporated in the liquid evaporator. An evaporating and concentrating device configured to generate a gas flow through a blowing means, having a surface in a direction intersecting a rotation axis, and a plurality of disc-shaped plate members parallel to the rotation axis direction. Evaporation promoting means provided in the storage container arranged, a driving source for rotating the evaporation promotion means, and a liquid level detecting means for detecting a liquid level of the liquid to be treated in the storage container. A liquid supply unit that is operated based on a detection result of the liquid level detection unit and replenishes the liquid to be processed into the storage container; and a liquid level of the liquid to be processed is higher than the liquid level detection unit. Bubble detection means provided at a position, wherein the bubble detection If the stage is detected bubbles, the drive source as well as the non-operation of the steam promoter means, evaporative concentration apparatus, characterized in that constructed as to continue the operation of the blowing means. 22. A heating means for heating the liquid to be treated, and an outside air cooling type heat exchange means provided in the condensing part, wherein the heating means is provided even when the foam detecting means detects bubbles. The evaporating and concentrating apparatus according to claim 21, wherein the operation of the heat exchange means is continued. 23. When the bubble detection by the bubble detection unit has not been detected within a predetermined time after the movement of the evaporation promotion unit or the operation of the drive source is stopped, the evaporation promotion unit or the drive source is activated. 22. The evaporative concentration apparatus according to claim 20, wherein the apparatus is configured to return to a normal operation state. 24. If the undetected information by the bubble detecting means is not obtained within a predetermined time after the movement of the evaporation promoting means or the operation of the driving source is stopped, the operation is stopped and a display warning is issued. 22. The evaporating and concentrating apparatus according to claim 20, wherein the evaporating and concentrating apparatus is configured as described above. 25. If the bubble detection by the bubble detection unit has not been detected within a predetermined time after the movement of the evaporation promotion unit or the operation of the drive source is stopped, the evaporation promotion unit or the drive source is activated. And to return to the normal operation state, and when the operation stop of the evaporation promoting means or the drive source and the normal operation are repeated, the operation is stopped and a display warning is issued. 22. The evaporative concentrator according to claim 20, wherein: 26. The evaporating and concentrating apparatus according to claim 1, wherein the liquid to be processed is a waste liquid of a photographic processing liquid. 27. An evaporating and concentrating apparatus comprising a foam discharging means for discharging bubbles to an evaporating portion of a liquid to be processed which is heated in a storage container and becomes vapor. 28. The evaporating and concentrating apparatus according to claim 27, wherein the discharged foam is returned to a tank for storing a liquid to be treated via a discharging means. 29. A bubble detecting means for detecting bubbles and a foam discharging means for discharging bubbles are provided at an evaporating portion of the liquid to be treated which is heated and turned into vapor in the storage container, and the foam detecting means detects the bubbles. An evaporating and concentrating apparatus characterized in that the foam discharging means is operated when the operation is performed. 30. An evaporative concentrator characterized in that a bubble eliminating means for eliminating bubbles is provided in an evaporating section of a liquid to be treated, which is heated in a storage container and becomes a vapor. 31. An evaporating means having a surface in a direction intersecting with the rotation axis and having a plurality of disc-shaped plate members arranged in parallel in the direction of the rotation axis is moved in and out of the liquid to be treated. 31. The evaporating and concentrating apparatus according to claim 27, wherein the evaporating and concentrating apparatus is provided in the storage container so as to repeatedly perform. 32. A condensing section for liquefying the vapor evaporated in the evaporating section of the liquid to be processed, a circulation path is formed between the evaporating section and the condensing section, and blowing means is provided in the circulation path. 31. The evaporative concentrator according to any one of claims 27, 29, or 30, wherein a gas flow is generated through the device. 33. A liquid evaporator including a heating means, a storage container for storing the liquid to be processed, a condenser for liquefying the vapor evaporated in the liquid evaporator to obtain a condensate, and a liquid evaporator. A circulation path formed between the condensing unit and the condensing unit, wherein a gas flow is generated in the circulation path via a blowing unit. A built-in bath for storing a heat medium is provided outside the storage container, and the liquid to be processed in the storage container is heated via the heated heat medium. Wherein the evaporating section is provided with a foam discharging means for discharging bubbles or a foam eliminating means for eliminating bubbles. 34. The evaporating and concentrating apparatus according to claim 30, wherein the foam disappearing means is a heating means. 35. The apparatus according to claim 27, wherein the liquid to be processed is a waste liquid of a photographic processing liquid. 36. A circulation path is formed between a liquid evaporator including a storage container for storing the liquid to be treated and a condenser for liquefying the vapor evaporated in the liquid evaporator. An evaporating and concentrating device configured to generate a gas flow through a blowing unit, wherein the storage container is formed of a titanium material, and has a space outside a lower part of the storage container and a space, and includes a packing. A plastic container is integrally provided, and a heating unit including an electric heater is connected to a space provided between the storage container and the plastic container, and a heating medium is filled. Concentrator. 37. The apparatus according to claim 36, wherein the storage container is formed by press drawing. 38. An outlet is provided at the bottom of the storage container,
37. The evaporating and concentrating apparatus according to claim 36, wherein a discharge means for removing the concentrated liquid of the liquid to be treated is detachably provided at the discharge port. 39. An evaporating means having a surface in a direction intersecting with the rotation axis and having a plurality of disc-shaped plate members arranged in parallel in the direction of the rotation axis, moving in and out of the liquid to be treated. 37. The evaporating and concentrating apparatus according to claim 36, wherein the evaporating and concentrating apparatus is provided in the storage container so as to repeatedly perform. 40. A temperature detecting means for detecting a temperature of the liquid to be treated, wherein a temperature of the liquid to be treated is in a range of 40 ° C. to 65 ° C. based on a detection result of the temperature detecting means. 37. The evaporating and concentrating apparatus according to claim 36, wherein the heating means is configured to control the energization. 41. The evaporating and concentrating apparatus according to claim 36, wherein the liquid to be processed is a waste liquid of a photographic processing liquid. 42. A circulating path is formed between a liquid evaporating section including a storage container for storing the liquid to be processed and a condensing section for liquefying the vapor evaporated in the liquid evaporating section. An evaporating and concentrating device configured to generate a gas flow through a blowing unit, wherein an external air cooling type heat exchange unit is provided in the condensing unit, and the gas flow proceeds from an inlet side to an outlet side. An evaporative concentrator characterized in that the heat exchange means is disposed so that the position of the bottom surface is lowered. 43. The evaporative concentrator according to claim 42, wherein said heat exchange means is located above said liquid evaporator.