JPS5937353B2 - Electrolytic silver recovery equipment - Google Patents

Description

[Detailed description of the invention] The present invention relates to an electrolytic silver recovery device.

When an electrolytic silver recovery and fixer regeneration device is installed, the system is diversified, with not only processing capacity required, but also a system that includes a photographic processing device.

That is, since there are problems such as restrictions on technical management and installation locations, manufacturing individual products is disadvantageous for both the manufacturer and the user. In addition, manufacturing a uniform product and modifying it according to requirements poses problems in terms of deadlines and costs, and there are also many problems in keeping equipment for various systems in stock. Therefore, the present invention has developed an electrolytic silver recovery device that has a fixed electrolytic silver recovery device, and other components that can be made into units or prefabricated, as well as optional parts, so that a wide variety of systems can be easily assembled. The purpose is to provide a silver recovery device.

In order to achieve this objective, the present invention branches the pipe that feeds the liquid into the electrolytic cell to form a supply pipe and a circulation pipe, and also places the supply pipe above the liquid level of the electrolytic cell. It is characterized in that the circulation pipe is branched in different directions to form two connection ports, and the circulation pipe is branched in different directions to form two connection ports.

The illustrated embodiment will be described below.

What is shown in FIGS. 1 and 2 is an embodiment of the apparatus of the present invention, in which 1 is an electrolytic cell, 2 is a cylindrical rotating cathode, and one end of a rotating shaft 4 is connected to a cathode end plate 3 provided at the top. The rotating cathode 2 rotates in the liquid.

6 is an outer anode fixed to the outside of the rotating cathode 2;
is an inner anode fixed inside the rotating cathode 2, and an appropriate number of both anodes 6 and T are provided.

Reference numeral 8 denotes an inner cylinder provided in the electrolytic cell 1, whose upper end is open and whose bottom penetrates through the bottom of the electrolytic cell 1.

9 is an inner cylinder inlet formed on the side wall of the inner cylinder 8, and 10 is a baffle plate provided radially at several places on the inner peripheral surface of the electrolytic cell 1. In the case shown in Fig. 2, it is similar to a hexagonal electrolytic cell. The effect of mixing liquids can be obtained.

Reference numeral 11 denotes a pump connection port formed on the bottom side wall of the inner cylinder 8, which communicates with a pump 13 via a pipe 12.

14 is a tank inlet, 15 is a tank inlet 14
The right end is branched into a supply pipe 16 and a circulation pipe IT.

Reference numeral 18 denotes a branch pipe 1 having two connection ports 18a and 18b formed at a position higher than the liquid level at the end of the supply pipe 16;
Reference numeral 9 indicates two connection ports 19a formed at the ends of the circulation pipe 17.
, 19b are the lower branch pipes, and 20 is the circulation pipe 17.
21 is a stopper detachably provided at the connection port 19b, and 22 is a pipe detachably provided between the connection port 19a and the pump 13.

The length of the counter-rotating cathode 2 in the liquid is at least one time the diameter of the cathode 2. 23 is a power plug, and 24 is a power supply section.

25 is an inner cylinder liquid discharge port formed at the bottom of the inner cylinder 8, and 26 is an inner cylinder liquid discharge pipe connected to the discharge port 25. If formed to rise upward as shown in the figure, it can also be used as a level meter.

27 is an overflow connection port formed at the bottom of the inner cylinder 8; 28 is an overflow pipe communicating with the connection port 27;
As shown in the figure, the pipe 28a rises upward, and at a predetermined liquid level height of the electrolytic cell 1, the pipe 28a branches into two directions and laterally branches.
The overflowing liquid is discharged and the liquid in the electrolytic cell 1 is maintained at a constant level, and the upwardly branched pipe 28b is open to vent air, and a sensor for detecting the silver concentration of the liquid is inserted as necessary. can do.

29 is a drain pipe provided at the bottom of the electrolytic cell 1, and a drain ball valve 30 is provided.

Next, the operation of the above-mentioned apparatus will be described. A fixed amount of a fixing solution whose fixing ability has deteriorated is introduced into the electrolytic cell 1 through a pipe 16.

When the amount exceeds a certain level, it is discharged from the overflow connection port 27 via the overflow pipe 28. Then, when the power source is connected and the switch of the power supply section 24 is closed, the rotating cathode 2 rotates, and the liquid hits the baffle plate 10 provided in the electrolytic cell 1 and becomes a swirling flow. On the other hand, the pump 13 rotates, and the liquid passes downward from the outside of the rotating cathode 2 as shown by the arrow, reaches the inside of the cathode 2 (9), enters the inner cylinder 8 from the inner cylinder inlet 9, It is circulated into the electrolytic cell 1 via the pump connection port 11, the pipe 12, the pump 13, the pipe 22, the connection port 19a of the lower branch pipe 19, the circulation ball valve 20, the circulation pipe 17, and the pipe 16,
The liquid also flows vertically within the electrolytic cell 1, supplies silver ions onto the inner and outer surfaces of the rotating cathode 2, and deposits silver on the inner and outer surfaces of the rotating cathode 2.

When discharging as a recycled fixer solution after desilvering, most of the solution in the electrolytic cell 1 is discharged by opening the drain ball valve 30.

Furthermore, due to the siphon structure, the valve will not be damaged by silver particles (clumps) or the like getting mixed in. Next, an embodiment in which the apparatus of the present invention is used to unitize and prefabricate and to attach optional parts will be described with reference to FIGS. 3 to 6.

In the figure shown in the figure, PROC A is the device of the present invention, PROC B (
B, , B2) are existing or other devices, the parts shown with dotted lines are optional parts, the parts shown with two-dot chain lines are optional parts that can be replaced with the device of the present invention, and the parts shown with thick lines are parts of program B. These are the unit parts that are attached to each device when connecting them. First, the embodiment shown in FIG. 3 relates to a circulation system, in which numeral 31 in block B is an automatic developing machine, and numeral 32 is a replenisher tank.

To connect block A and block B, use automatic processor 3.
1 overflow pipe 33 and upper branch pipe 18 connection port 1
A pipe 34 is provided between 8a, and the connection port 18b is closed with a stopper.

On the other hand, the regeneration liquid supply pipe 35 of the automatic developing machine 31 and the lower branch pipe 1
A pipe 36 is provided between the 9 connection ports 19b. 37 is a flow meter unit provided in the pipe 36, and 38 is a stop valve provided in the pipe 36.

Alternatively, the tube 22 may be removed and a filtering device 39 may be installed in its place. 40 is a silver concentration detection sensor.

Since the present embodiment is configured as described above, when the fixer is replenished from the replenisher tank 32 to the automatic developing machine 31, the fixer whose fixing ability has deteriorated is discharged from the overflow tube 33 by the amount that is replenished. be done.

At this time, since the outlet of the overflow tunnel 33 is arranged above the liquid level of the electrolytic cell 1, the liquid with deteriorated fixing ability is removed from the overflow pipe 33, pipe 34, upper branch pipe 18,
The liquid is supplied into the electrolytic cell 1 via the supply pipe 16 and the pipe 15 depending on the height difference in the liquid level, and while being electrolyzed, the liquid flows into the inner cylinder 8.
, tube 12, pump 13, circulation ball vibrator 20, circulation pipe 17, and tube 15, silver is deposited on the rotating cathode 2, and the circulation ball valve 20 and ball valve 38 are adjusted to suit Flow meter unit 37, pipe 3
6. The liquid is returned to the automatic developing machine 31 via the regenerating liquid supply pipe 35. This allows the silver concentration in the automatic development device to be kept low, thereby maintaining a good fixing effect. The embodiment shown in FIG. 4 is related to a batch system, and 41 in block B is a waste liquid storage tank, and 42 is a recycled liquid tank. A pipe 44 is provided between the discharge pipe 43 of the waste liquid storage tank 41 and the connection port 18a of the upper branch pipe 18.
Plug b with a stopper.

Regenerated liquid supply pipe 45 of recycled liquid tank 42 and lower branch pipe 1
A pipe 46 is provided between the 9 connection ports 19b. 47 is a flow meter unit provided in the pipe 46, and 48 is a valve provided in the pipe 46.

49 is an increase tank; remove the pipe 12 and connect it to the increase tank 4.
A pipe 50 is connected between the pump 9 and the pump 13, and the pipe 50 and the drain 29 are connected.

Since the present embodiment is configured as described above, by making the liquid level of the fixer in the waste liquid storage tank 41 higher than the liquid level of the electrolytic cell 1, when the valve 51 is opened, the waste liquid storage tank 4
The fixing liquid in 1 is discharged from a discharge pipe 43, a pipe 44, an upper branch pipe 18,
The liquid is sent through the supply pipe 16 and pipe 15 into the electrolytic cell 1 due to the difference in liquid level, and further through the overflow pipe 28.
It is sent to the expansion tank 49, and is sent to the electrolytic cell 1 and the expansion tank 49.
Filled within.

Then, when the pump 13 is operated, the fixing liquid in the increase tank 49 flows through the pipe 50, the pump 13, and the valve 20 (valve 3).
0 and 48 are closed), circulation pipe 17, pipe 15,
The electrolytic cell 1 returns to the increasing tank 49 via the drain pipe 28, and this process is repeated. When the electrolytic action is performed in the electrolytic cell 1 and the fixer is regenerated, the valve 20 is closed and the valve 48 Open the valve 30 of the drain pipe 29.
is also opened, and the pump 13 can pump the fixing liquid in the volume increase tank 49 and the electrolytic cell 1 into the recycled liquid tank 42 via the pipe 46.

52 is the silver concentration detection sensor, 52' is the increase tank 4
9 level meter, which can be installed freely.

The embodiment shown in FIG. 5 is related to a constant flow system, and 53 shown in block B1 is a liquid storage tank, and 54 shown in block B2 is a regenerated liquid tank. 55 is a discharge pipe of the liquid storage tank 53, 56 is a pump provided in the discharge pipe 55,
57 is a ball valve provided on the discharge pipe 55; 58 is a supply pipe provided between the discharge pipe 55 and the connection port 18a of the upper branch pipe 18; a valve 59 is provided therein;

60 is a replenisher supply pipe provided between the discharge pipe 55 and the connection port 18b of the upper branch pipe 18, and is provided with a replenishment amount adjustment valve 61 and a flowmeter unit 62. 63 is a transfer station tank, which detects overflow. Liquid is sent from the tube 28.

64 is a discharge pipe provided between the transfer station tank 63 and the recycled liquid tank, and the liquid in the station tank 63 is sent to the recycled liquid tank 54 by the transfer station pump 65.

66 is an overflow pipe of the transfer station tank 63, which is connected to the drain pipe 29.

67 is a silver concentration detection sensor, and 68 is a level meter for the transfer station tank 63.

69 is an attachable replenisher filter.

Since this embodiment is constructed as described above, when the valves 57 and 59 are opened and the pump 56 is operated, the liquid in the liquid storage tank 53 is discharged through the discharge pipe 55, the supply pipe 58, the upper branch pipe 18, and the upper branch pipe 18.
The electrolytic cell 1 is filled through the pipe 15.

Then, valve 59 is closed. Then, when electrolysis starts, the pump 13 rotates, and the liquid in the electrolytic cell 1 is pumped through the pipe 12,
The liquid 1 is recycled by circulating through the pump 13, valve 20, circulation pipe 17, tube 15, and electrolytic cell 1.

On the other hand, the liquid in the liquid storage tank 53 is supplied to the electrolytic cell via the replenisher supply pipe 60, the supply pipe 16, and the pipe 15 according to the amount of silver deposited by adjusting the opening degree of the replenishment amount adjustment valve 61.
will be replenished within. Since the electrolytic cell 1 is replenished with the liquid as described above, the liquid in the electrolytic cell 1 is sent to the transfer station tank 63 via the overflow pipe 28 in the amount equal to the replenishment amount, and is transferred to the transfer station tank 63 in conjunction with the level meter 68. The earth station pump 65 operates intermittently to send the liquid in the transfer station tank 63 into the recycled liquid tank 54.

Next, the embodiment shown in Fig. 6 will be explained. This embodiment is similar to the constant flow system shown in Fig. 5, and the liquid is replenished more evenly than the embodiment shown in Fig. 5. It was designed to do so.

In this embodiment, a constant head station 70 is provided, and the discharge pipe 55 of the liquid storage tank 53 is connected to the connection port 18a of the upper branch pipe 18 via the supply pipe 71. A branched tube 72 provides communication with a constant head station 70.

73 is a valve provided on the supply pipe 71.

On the other hand, the constant head station 70 is connected to a replenisher supply pipe 60 via a supply pipe 74, and the pipe 60 is connected to the connection port 18b. 75 is a filter provided in the constant head station 70, and 76 is an overflow pipe provided in the constant head station 70.

Then, the liquid in the liquid storage tank 53 is sent to the electrolytic cell 1 from the pipe 15 via the discharge pipe 55 and the supply pipe 71 by the pump 56.

Once the electrolytic cell 1 is filled, the liquid circulates in the same manner as in the above embodiment. On the other hand, since the valve 73 is closed, the replenisher from the liquid storage tank 53 is sent to the constant head station 70 via the pipe 72, and the replenisher outlet of the supply pipe 74 is placed at a level vζ higher than the liquid level of the electrolytic cell 1. Accordingly, the replenisher is sent to the replenisher supply line 60 via the supply line 74, and thereafter the liquid is regenerated as in the embodiment of FIG. As mentioned above, this device connects various devices as appropriate.
Even when the electrolytic solution is accumulated in the electrolytic cell 1, since the connection ports 18a and 18b of the upper branch pipe 18 of the supply pipe 16 are located above the liquid level of the electrolytic cell 1, the supply pipe There is no need to provide a tube closure device such as a valve to 16.

Since the opening and closing of the direction valves and the like can be operated either automatically or manually, it goes without saying that automatic operation is possible.

In the present invention, as described above, the pipe for feeding liquid into the electrolytic cell is branched to form a supply pipe and a circulation pipe, and both pipes are branched into two directions, respectively, to form two connection ports. With the device of the present invention, it is possible to simplify various systemizations, and since the connection port of the upper branch pipe of the supply pipe is located at a higher level than the liquid level of the electrolytic cell, it is possible to install pipe blockers such as valves on the supply pipe. This is an extremely effective invention in terms of manufacturing and economics, as it can be connected to other devices even when the electrolytic cell is filled with liquid, even if the electrolytic cell is not equipped with a liquid.

[Brief explanation of the drawing]

Fig. 1 is a system diagram showing one embodiment of the present invention, Fig. 2 is a cross-sectional plan view of an electrolytic cell, and Figs. 3 to 6 are systems showing respective embodiments systemized using the device of the present invention. It is a diagram. 1 is an electrolytic cell, 8 is an inner cylinder, 15 is a pipe, 16 is a supply pipe,
17 is a circulation pipe, 18 is an upper branch pipe, 18a, 18
b is the connection port, 19 is the lower branch pipe, 19a, 19b
is its connection port, and 28 is an overflow pipe.

Claims (1)

[Claims] 1 Branch the pipe that feeds the liquid into the electrolytic cell to form a supply pipe and a circulation pipe, and branch the supply pipe in two directions above the liquid level of the electrolytic cell to form two connection ports, and An electrolytic silver recovery device characterized by branching a circulation pipe into two directions and forming two connection ports.