RU170495U1 - DEVICE FOR PREPARING SALT SOLUTION FOR FISHING HOLES - Google Patents

Abstract

The utility model relates to general-purpose devices for performing various physical and chemical processes, in particular, dissolving one material in water, and can be used for high-quality and quick dissolution of salt in a brine for filling fish storage holds. A device for dissolving salt in a brine for filling fish holds includes a tank for creating saline solution, fish tanks for storing fish, interconnected by a pipeline system with filters for cleaning seawater and cleaning brine from cereals particles of insoluble salt and sludge, a seawater feed pump, a brine slurry recirculation pump, a salt feed funnel to the brine with a slide gate valve controlled by the drive according to the control system signals. The technical result is to increase the system performance by reducing the turbulence of the water-salt mixture, which leads to an increase in the laminar component of the water flow, and hence its speed relative to salt particles, and due to the supply of water and salt to the tank to create a salt solution, the speed l the supply of salt is regulated depending on the quality of its dissolution in the tank. Thus, a higher rate of creation of a saturated brine for freezing fish is achieved compared to the considered analogues without increasing the energy consumption for mechanical mixing of the brine. 3 ill.

Description

The utility model relates to general-purpose devices for carrying out various physical and chemical processes, in particular, dissolving one material (in this case, sodium chloride) in water, and can be used for high-quality and quick dissolution of salt in brine for filling fish storage holds of a fishing vessel.

A device for dissolving salt in a brine for filling fish holds includes a tank for creating saline solution, a tank (or several tanks) for storing fish (fish tanks), interconnected by a pipeline system with filters for cleaning sea water and for cleaning brine from large particles of undissolved salt and sludge, pump for supplying sea water, slurry pump for recirculation of brine, funnel for supplying salt to the brine with a slide gate valve, controlled by the drive according to the signals of the control system.

From the prior art, a salt solution preparation unit is known, equipped with a salt grinder, a loading conveyor, containers for hydrodynamic dissolution of salt, containers for storing the finished salt solution, tanks for industrial and hot water, tanks for the chemicalization unit, a sludge collector, and slurry pumps. The chemicalization unit is equipped with a three-plunger pump for dispensing chemical solutions into a ready-made saline solution that meets the requirements of industrial environmental safety and improves the quality of saline solution for killing wells (RU2264249 (C2), B01F 1/00, 09/25/2003).

A disadvantage of the known device is the high number of additional containers (technical and hot water, chemicalization and collection of sludge), which on a fishing vessel will occupy usable space and carry unnecessary functions. In addition, the device does not consider the principle of dynamic mixing of salt in solution.

A salt solution preparation unit is also known, comprising a salt solution production line located in the production building, including tanks for hydrodynamic mixing of salt solution installed in the technological sequence, slurry pumps, pipelines, salt grinder, loading conveyor, additional containers for storing salt solution of optimal density, for the supply of technical and hot water, the capacity of the chemicalization unit, a separate tank for collecting sludge connected e conduits through slurry pumps with hydrodynamic mixing tanks saline triplex plunger pump for dispensing chemicals into the prepared salt solution (RU 111454 (U1), B01F 1/00, 24.08.2011).

The disadvantage of this device, as in the previous case, is the high number of additional tanks (stock of technical and hot water, chemicals, sludge collection, additional containers for storing salt solution), which are suitable for stationary installations for oil production, but on a fishing vessel occupy useful space, enter the load and carry unnecessary functions. In addition, as in the previous embodiment, the device does not consider the principle of dynamic mixing of salt in solution.

A device for preparing a saline solution for water treatment plants is known, consisting of a container for storing and preparing a saturated salt solution, a pump, a nozzle for outputting a saturated salt solution, a nozzle for supplying a salt solution for mixing, a nozzle for supplying water and a valve system, characterized in that the nozzle for outputting a saturated solution salt is located above the salt level in the tank in such a way that the volume of the solution between its maximum level and the level of installation of the pipe exceeds once selected for the regenerator and the nozzle for supplying the salt solution for mixing is installed above the salt level in the tank and has at least one nozzle directed downward and along the circumference of the tank (RU55357 (U1), C02F 5/00, 02/10/2006, according to data from 07.02. 2014 has expired, but can be restored).

According to the greatest number of similar features and the result achieved using the given technical solution is selected as a prototype of the claimed utility model.

The disadvantages of this device for the preparation of saline solution are: 1) a downwardly directed nozzle of the nozzle for supplying a solution of salt for mixing, which will increase the turbulence of the water flow at the walls of the tank, and therefore reduce the flow rate, thereby reducing the rate of dissolution of salt in brine; 2) the implementation of the recirculation of the brine through the return pipe, which increases the amount of undissolved salt and sludge particles passing into the pipe for supplying the salt solution for mixing; 3) the water supply is regulated only by an automatic float valve, without taking into account the obtained salinity of the brine and the size of the salt particles; 4) the salt is loaded before the water is supplied to the bottom of the tank, which initially reduces its dissolution rate in the brine, since the contact of water and salt is carried out only on the upper surface of the poured salt; 5) the selection of brine from the dissolution tank is carried out without taking into account the direction of circulation of the brine in the tank, which increases the turbulence of the brine in the place of the fence, reduces its speed relative to the salt particles and thereby reduces its dissolution rate.

The technical task of this utility model is to eliminate the above disadvantages.

The invention is illustrated by graphic materials:

- FIG. 1 is a functional diagram of a device;

- FIG. 2 - the location of the spiral tape inside the tank;

- FIG. 3 - the location of the brine outlet pipe along the axis of symmetry of the tank.

The technical result is ensured by the fact that the device for dissolving salt in brine (Fig. 1) for filling fish holds includes a tank for creating saline solution (1) equipped with an air filter (2), a tank (or several tanks) for storing fish (15), interconnected by a piping system (6, 7, 14, 16) with filters for treating seawater (12) and purifying brine from large particles of insoluble salt and sludge (13), a pump for supplying water to a tank for creating saline solution (8), brine extraction pump from the tank to create a saline solution ( 9), a funnel for supplying salt to the brine (3) with a slide gate valve (5) and a tiltable capacity (4) for loading the salt into the funnel, which are controlled by actuators according to the control system signals, as well as a valve system (10, 11, 17).

The technical result provided by the given set of features is to increase the performance of the system by reducing the turbulence of the water-salt mixture, which leads to an increase in the laminar component of the water flow, and hence its speed relative to salt particles, and by supplying a salt solution to the tank water with salt, the feed rate of salt is regulated depending on the quality of its dissolution in the tank. Thus, an increase in the rate of creation of a saturated brine for freezing fish is achieved compared with the considered analogues without increasing energy consumption for mechanical mixing of the brine.

The technical essence of the utility model is illustrated by an illustration (Fig. 1), which shows in a diagram form a device for dissolving salt in a brine for filling fish holds, consisting of a tank for creating saline solution (1), which is a cylindrical tank, to the top of which a pipe the supply of the water-salt mixture (6), the nozzle of which is directed parallel to the bottom of the tank and along its side so that the incoming water-salt mixture forms a circular flow along the side of the cylinder. The path along which the mixture will go in this case, due to the low turbulence of the flow, will be longer than with a different entrance of the water-salt mixture into the tank. To exit the air entering the tank, an air valve (2) is provided in it.

The brine extraction pipe from the tank for creating the saline solution (7) has an inlet nozzle located similarly to the nozzle of the supply pipe for the water-salt mixture, parallel to the bottom of the tank along its side, but directly at the bottom of the tank and on the opposite side of the supply pipe, with respect to axis of symmetry of the tank. Thus, the water-salt stream, moving in a spiral along the side wall of the tank, enters the nozzle of the selection of brine, which is a continuation of the spiral trajectory of the movement of the water-salt mixture.

To reduce the turbulence of the flow of the water-salt mixture inside the tank near its outer wall, a spiral tape can be installed with a width equal to or greater than the diameter of the nozzle for supplying the water-salt mixture (Fig. 2).

To reduce the sedimentation of undissolved particles in the center of the tank, where the linear velocity of the water-salt mixture is the least, the brine outlet pipe can pass from bottom to top along the axis of symmetry of the tank (Fig. 3). At the same time, the brine outlet pipe can be a fine mesh filter for mechanical water purification to increase the filtration area and reduce the rate of increase in the level of brine in the tank while increasing the level of insoluble salt and sludge in the lower part of the tank.

Through the brine extraction pipe by means of a slurry pump (9), the brine is fed to the filter of insoluble salt and sludge particles (13) and then to the fish tank (15). From a fish tank, brine can be supplied through a pipeline system to either other fish tanks through a valve (17), or into a tank for creating saline through a pipe (16) and a valve (11).

Water is supplied to the tank to create a saline solution due to the side in case of insufficient brine in the fish tanks through the pipe (14) through the overboard water filter (12) and valve (10). If there is a sufficient amount of brine in the fish tanks, then brine from the tanks is fed into the tank for creating saline solution. At the same time, salt flows through the funnel (3) into the supply pipe of the water-salt mixture. The rate of salt intake is regulated by a slide gate (5), which is moved by a servo-drive according to the control system signals, taking into account, using sensors, the salinity of the prepared brine, the relative amount of sludge, and the level of brine in the tank for creating saline solution. Salt is fed to the funnel from a tilt tank (4) with pre-loaded crushed salt, the slope of which is also regulated by a servo-drive according to the signals of the control system, taking into account the level of loading of the funnel.

This device operates as follows.

If necessary, in a brine for freezing fish, the control system starts the pump for supplying water to the tank for creating a salt brine with a volume of 0.5 m. In this case, the seawater intake valve is open, and the water intake valve from the fish tank is closed. Salt flows through a funnel into the supply pipe of the water-salt mixture. The salt feed rate is regulated by a slide gate according to the control system signals, which is implemented on any of the well-known industrial computers or PLCs (Siemens Simatic, Scheider Electric Modicon Quantum, etc.).

Upon reaching the brine level in the tank to create a salt brine with a nominal value of 0.8 ÷ 0.9 tank height, the liquid level sensor sends a signal to the control system that starts the brine sludge extraction pump, which pumps the brine from the tank to create a salt brine into a fish tank with a volume 95 m ³ . At the same time, the rates of injection and pumping of brine from the tank to create salt brine are kept approximately the same by the control system and are corrected by the signals of the float sensor of the nominal and maximum permissible (0.95 tank height) brine level in the tank.

In the tank for creating salt brine, nozzles for the brine supply and brine extraction nozzles are arranged parallel to the bottom of the tank and tangent to its side so as to create and maintain a rotational movement of the water-salt mixture along the walls of the tank, creating conditions for mixing the mixture and quick dissolving the salt without using additional mechanical stirring.

Before entering the fish tank, the brine is subjected to mechanical filtration to remove insoluble particles of salt and sludge. When the brine in the fish tank reaches the level measured by the hydrostatic sensor corresponding to the value set by the operator, the valve for supplying water to the tank opens to create salt brine from the fish tank, and immediately after that the valve for supplying sea water closes. Next, the brine circulates between the fish tank and the tank to create a salt brine with the addition of salt in the supply pipe of the water-salt mixture until the brine salinity value measured by the salinity sensor in the pipe inlet of the fish tank is reached, after which the slurry and circulation pumps are turned off, and the control panel sends a signal that the brine is ready.

Claims (1)

A device for preparing saline solution for fish holds, consisting of a cylindrical tank for preparing a saturated salt solution, a nozzle for supplying a solution of salt for mixing, a nozzle for selecting a solution of salt, a fish tank, valves and pumps with a control system, characterized in that the nozzle for supplying a solution of salt for mixing is located at the top edge of the tank parallel to the plane of the bottom of the tank along its lateral side, and the outlet pipe of the saturated solution is located at the bottom of the cylindrical tank parallel to the pipe supplying the salt solution to the mixing on the opposite side of the nozzle for supplying the solution with respect to the central axis of the tank, in the cylindrical tank along its circumference there is a spiral having a width not less than the diameter of the nozzle for supplying the salt solution for mixing, the nozzle for discharging the saturated salt solution from the cylindrical tank is bent to the center of the tank and extends along its vertical axis of symmetry through the top cover of the tank, the part of the pipe running along the axis of the tank is a fine-mesh filter for mechanical cleaning in dy.

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