CN115072824B - Control lever for naturally freezing and desalinating brackish water and method of using the same - Google Patents

Abstract

The invention relates to a control rod for naturally freezing and desalinating brackish water and a method of using the same. The control rod for naturally freezing and desalinating brackish water includes a metal tube, a submersible pump arranged in the metal tube, and several sets of The floating component on the metal pipe; wherein, the length of the metal pipe is greater than the depth of the brackish water, the lower end of the metal pipe is in the shape of a pointed cone, and the metal pipe is provided with a position close to the submersible pump. A plurality of screen holes, the outer peripheral wall of the metal tube is provided with a groove that runs through it from top to bottom, and a heating rod is installed in the groove; the submersible pump has several holes that extend beyond the metal tube in the upward direction. A sub-outlet pipe of the pipe, the water outlet of the sub-outlet pipe is equipped with a nozzle with a switch; the floating assembly is configured to only move downward relative to the metal pipe. The invention can control the downward movement of the ice layer, continue to freeze on the existing ice surface, rapidly evaporate the concentrated brine, and separate the salt from the water to obtain desalinated water.

Description

Control lever for naturally freezing and desalinating brackish water and method of using the same

Technical field

The invention belongs to the field of automatic freezing and desalination of brackish water, and specifically relates to a control lever for natural freezing and desalination of brackish water and a method of use thereof.

Background technique

The northwest region is arid and rainless, and most of its surface water is brackish water to varying degrees. The water shortage problem is particularly prominent. Desalination of brackish water can solve the water shortage problem to a certain extent. There are a few technologies that use the cold winter temperatures in the west to obtain ice cubes for desalination processing, such as CN104860367A, which uses water storage for cooling, artificial snowmaking, gravity melting desalination, The concentrated high brine is collected into a high brine storage tank and evaporated using solar energy to obtain inorganic salts and distilled water. There is also CN112520759A, which is equipped with facilities such as ice and melting pools, evaporation pools, condensation pools, insulation walls, insulation films, gravity vacuum geothermal pipes, etc. to achieve the purpose of desalination.

However, the existing desalination processes for brackish water are relatively complex and require a large investment in infrastructure. Multiple pools need to be constructed to separate the storage, freezing and evaporation of concentrated salt water and fresh water. This requires a large investment in infrastructure and a large area of land. , the labor cost is also very high. After a certain brackish water pond is treated, the facilities still need to be dismantled and restored to their original appearance, which is time-consuming and labor-intensive.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the defects of the existing technology and provide a control rod for naturally freezing and desalinating brackish water, which can control the downward movement of the ice layer, continue to freeze on the existing ice surface, and allow The concentrated brine quickly evaporates, separating the salt from the water to obtain desalinated water.

In order to solve the above technical problems, the technical solution of the present invention is: a control rod for naturally freezing and desalinating brackish water, which includes a metal tube, a submersible pump located in the metal tube, and several floating component on; where,

The length of the metal pipe is greater than the depth of the brackish water. The lower end of the metal pipe is in the shape of a pointed cone. The metal pipe is provided with a plurality of sieve holes near the submersible pump. The outer periphery of the metal pipe The wall is provided with a groove running through it from top to bottom, and a heating rod is installed in the groove;

The submersible pump has several sub-outlet pipes extending beyond the metal pipe in the upward direction, and the water outlets of the sub-outlet pipes are equipped with nozzles with switches;

The flotation assembly is configured to only move downward relative to the metal tube.

Further, in order to prevent the metal pipe from floating with the ice when the ice floats, the control rod used for naturally freezing and desalinating brackish water also includes several anchors connected to the metal pipe and used to anchor at the bottom of the brackish water body.

Further, a metal plate is installed on the metal pipe, the anchor is connected to the metal plate through an iron chain, and the metal plate is located above the cone-shaped part of the metal pipe.

Further, the floating assembly includes a moving ring and several floating balls distributed along the circumference of the moving ring and connected to the moving ring through horizontal rods. The moving ring is sleeved on the metal tube and is Configured to only move downward relative to the metal tube.

Further, the outer peripheral wall of the metal tube is provided with a plurality of outer ratchets from top to bottom, the moving ring is elastic, and the inner peripheral wall is provided with a plurality of inner ratchets from top to bottom, and the inner ratchets are connected to The outer ratchets match, the upper tooth surface of the outer ratchet tilts outward from top to bottom, and the lower tooth surface of the outer ratchet is perpendicular to the axial direction of the metal tube.

Furthermore, the moving ring is an unclosed ring.

Further, the nozzle is arranged obliquely upward, and the angle between the water spray direction of the nozzle and the horizontal plane is 60°.

The invention also provides a method for using a control rod for naturally freezing and desalinating brackish water. The method steps include:

Step S1: Arrange multiple control rods in the brackish water body to be treated, one every 4 to ^16m2 , and ensure that the bottom floating component floats on the water. After cooling down, the water surface freezes, and the bottom floating component floats. Components and ice freeze together;

Step S2: Start the submersible pump, pump out the water under the ice layer, pour it on the surface of the ice layer, and turn off the submersible pump after the ice layer collects 10 to 30cm of water;

Step S3: The water on the ice layer freezes into a new ice layer. The floating components at the corresponding positions are frozen together with the new ice layer, and then heated by heating rods to melt the ice in the grooves. The concentrated salt water flows down the groove, and the ice layer above moves downward to fit with the ice layer below. Return to step S2 until the water on the ice surface cannot freeze;

Step S4: Leave only one nozzle open on each support rod, lay several collection frames on the uppermost surface of the ice layer, and continue to start the submersible pump so that the concentrated salt water will continue to spray under the action of the submersible pump, and the landing point will be exactly at the collection frame Within, the concentrated brine evaporates quickly in the spray state to obtain dry salt solid;

Step S5: The dry salt is collected and transferred away. After the temperature rises, the ice cubes melt to obtain treated water.

The beneficial effects of the present invention are: the present invention can control the downward movement of the ice layer and rely on natural freezing to continue to freeze on the existing ice surface. After the temperature warms up and the water on the ice surface cannot freeze, the concentrated salt water at the bottom can be It is raised and sprayed out in the form of mist, causing the concentrated brine to evaporate quickly, separating the salt from the water, and then obtaining desalinated water. The desalinated water can be directly used in agriculture. The control rod structure of the present invention for freezing and desalinating brackish water Simple and easy to operate, just throw it into the water to be treated, and it can be powered on and used without complicated operations; it saves the construction of complex structures such as the construction of various storage tanks, and after the desalination treatment is completed, the device can be quickly dismantled and transported Repeat the process in other areas.

Description of the drawings

Figure 1 is a schematic structural diagram of a control rod used for natural freezing and desalination of brackish water according to the present invention;

Figure 2 is a cross-sectional view along line A-A of Figure 1;

Figure 3 is a schematic structural diagram of the moving ring of the present invention being installed on the metal pipe;

Figure 4 is a schematic structural diagram of the moving ring of the present invention;

Detailed ways

In order to make the content of the present invention easier to understand clearly, the present invention will be described in further detail below based on specific embodiments and in conjunction with the accompanying drawings.

Embodiment 1

As shown in Figures 1, 2, 3, and 4, a control rod for natural freezing and desalination of brackish water includes a metal tube 1, a submersible pump 2 located in the metal tube 1, and several Floating assembly 3 on tube 1; where,

The length of the metal pipe 1 is greater than the depth of the brackish water. The lower end of the metal pipe 1 is in the shape of a pointed cone. The metal pipe 1 is provided with a plurality of sieve holes 11 near the submersible pump 2, so The outer peripheral wall of the metal tube 1 is provided with a groove 12 that runs through it from top to bottom, and a heating rod 9 is installed in the groove 12;

The submersible pump 2 has several sub-outlet pipes 4 that extend beyond the metal pipe 1 in the upward direction, and the water outlets of the sub-outlet pipes 4 are equipped with nozzles 6 with switches 5;

The floating assembly 3 is configured to only move downward relative to the metal tube 1 .

In this embodiment, the pointed cone-shaped part of the metal pipe 1 is used to insert into the bottom of the brackish water body. The outer diameter of the metal pipe 1 is 15-25cm. The length of the metal pipe 1 depends on the treatment to be processed. The brackish water depth setting is generally 50 to 100cm longer than the depth of the brackish water to be treated.

In this embodiment, the water outlet pipe of the submersible pump 2 extends upward inside the metal pipe 1 to outside the metal pipe 1 and bifurcates into a plurality of sub-water outlet pipes 4 .

Specifically, the present invention can control the downward movement of the ice layer and rely on natural freezing to continue to freeze on the existing ice surface. When the temperature warms up and the water on the ice surface cannot freeze, the concentrated salt water at the bottom is raised and frozen. The mist spray causes the concentrated brine to evaporate quickly, causing the salt to separate from the water, thereby obtaining desalinated water. The desalinated water can be directly used for agriculture. The control rod for freezing and desalinating brackish water of the present invention has a simple structure and is easy to operate. OK, just throw it into the water to be treated, and it can be powered on and used without complicated operations; it saves the construction of complex structures such as the construction of various storage tanks, and after the desalination treatment is completed, the device can be quickly dismantled and moved to other areas for repetition. for processing.

As shown in Figure 1, in order to prevent the metal pipe 1 from floating with the ice when the ice floats, the control rod used for natural freezing and desalination of brackish water also includes several rods connected to the metal pipe 1 and used for anchoring on the brackish water. Anchor 7 at the bottom of a saltwater body.

In this embodiment, the brackish water body may be a pond, a pond, a small lake, etc. A plurality of anchors 7 can ensure that the metal pipe 1 is firmly fixed at the bottom of the water body.

As shown in Figure 1, a metal plate 8 is installed on the metal pipe 1. The anchor 7 is connected to the metal plate 8 through an iron chain 10. The metal plate 8 is located at the pointed cone of the metal pipe 1. above the shaped part.

In this embodiment, the metal plate 8 is 30-50cm away from the tapered part of the metal pipe 1, the size of the metal plate 8 is 30-50cm×30-50cm, and the metal plate 8 is perpendicular to the The axis of the metal pipe 1 and the four corners of the metal plate 8 are each connected to the anchor 7 through an iron chain 10. This arrangement is conducive to the dispersion of the four anchors 7, and the four anchors 7 are anchored in brackish water. The bottom of the water body prevents the control rod from being lifted when the ice floats. The submersible pump 2 is located 5 to 15 cm above the metal plate 8 .

As shown in Figures 1, 3, and 4, the floating assembly 3 includes a moving ring 31 and a plurality of floating balls 33 distributed along the circumference of the moving ring 31 and connected to the moving ring 31 through horizontal rods 32. The moving ring 31 is sleeved on the metal tube 1 and is configured to only move downward relative to the metal tube 1 .

As shown in Figures 1, 3, and 4, the outer peripheral wall of the metal tube 1 is provided with a plurality of outer ratchets 13 from top to bottom. The moving ring 31 is elastic, and the inner peripheral wall is provided with a plurality of outer ratchets 13 from top to bottom. an inner ratchet 311, the inner ratchet 311 cooperates with the outer ratchet 13, the upper tooth surface of the outer ratchet 13 tilts outward from top to bottom, and the lower tooth surface of the outer ratchet 13 Perpendicular to the axial direction of the metal tube 1.

As shown in Figure 4, the moving ring 31 is an unclosed ring.

As shown in FIG. 1 , the nozzle 6 is arranged obliquely upward, and the angle between the water spray direction of the nozzle 6 and the horizontal plane is 60°.

Embodiment 2

A method of using a control rod for naturally freezing and desalinating brackish water as described in Embodiment 1, the method steps include:

Step S1: Arrange multiple control rods in the brackish water body to be treated, and ensure that the bottom floating component 3 floats on the water. After cooling, the water surface freezes, and the bottom floating component 3 and the ice layer freeze on the water. Together;

Step S2: Start the submersible pump 2, pump out the water under the ice layer, pour it on the surface of the ice layer, and turn off the submersible pump 2 after the ice layer collects 10-30cm deep water;

Step S3: The water on the ice layer freezes into a new ice layer, and the floating component 3 at the corresponding position is frozen with the new ice layer, and then heated by the heating rod 9 to melt the ice in the groove 12, and the adjacent ice The concentrated salt water between the layers flows down the groove 12, and the ice layer above moves downward to fit with the ice layer below, and returns to step S2 until the water on the ice surface cannot freeze;

Step S4: Only one nozzle 6 of each support rod is left open, lay several collection frames on the uppermost surface of the ice layer, and continuously start the submersible pump 2 so that the concentrated salt water will continue to spray under the action of the submersible pump 2, and the landing point will be exactly right. In the collection box, the concentrated brine is rapidly evaporated under spraying to obtain dry salt solid;

Step S5: The dry salt is collected and transferred away. After the temperature rises, the ice cubes melt to obtain treated water.

The technical solutions involved in the above embodiments will be described below in conjunction with optional embodiments.

When in use, multiple control rods are arranged in the brackish water body to be treated, one every 4 to 16 m ² , and the power supply of the submersible pump 2 and the heating rod 9 is connected. Waiting for cooling, at this time, the bottom floating component 3 floats. The ball 33 floats on the water surface. After cooling down, the water surface freezes into ice layer A. The lowermost floating ball 33 is combined with the ice layer A. The submersible pump 2 is started to pump the water under the ice layer A upward and pour it to the ice layer A. On the surface, depending on the temperature at that time, water about 10 to 30cm deep will accumulate on the ice surface. At this time, the ice layer A has no support from the water and may move downward with the moving ring 31 along with the water level. The spray volume of the submersible pump 2 reaches When the water level on the ice reaches 10-30cm, turn off the submersible pump 2. When the water on the ice layer A freezes again into ice layer B, the float 33 of the second floating assembly 3 from bottom to top is frozen in ice layer B. , turn on the heating rod 9 to enter the heating state, melt the ice in the groove 12, turn off the heating rod 9, the concentrated salt water between the ice layer A and the ice layer B flows down the groove 12, the ice layer B moves downward, and When the ice layer A is attached, start the submersible pump 2 again and spray the water from the bottom layer to the surface of the ice layer B. Spray a small amount first, freeze it in the groove 12, block the groove 12, and then keep the surface of the ice layer B After the water level reaches 10-30cm, turn off the submersible pump 2. After freezing, the ice layer C is obtained. The float of the third floating component 3 from bottom to top is frozen in the ice layer C. Turn on the heating rod 9 to make the groove 12 The ice inside melts, allowing the concentrated salt water between ice layer C and ice layer B to flow to the bottom, and repeatedly turn on the submersible pump 2, and so on until the water on the ice surface cannot freeze. When the water on the ice surface cannot freeze, Only one switch of the nozzle 6 is left open on each support rod, and several collection frames are laid on the uppermost surface of the ice layer. The heating rod 9 and the submersible pump 2 are continuously started, so that the concentrated salt water is continuously sprayed under the action of the submersible pump 2. , the landing point is just inside the collection frame, the concentrated brine evaporates quickly in the spray state, and is finally collected as dry salt solids. Due to the low temperature, part of the non-evaporated material will flow out of the collection frame, continue to flow down the groove 12, and continue to be lifted up and evaporated by the submersible pump 2 until it is finally evaporated to dryness.

If the evaporation and drying process considers power and efficiency, it can be carried out when the temperature rises slightly, and the evaporation effect will be better. The best temperature is around 0°C, when the ice has not yet melted. Heating equipment can also be added to the peripheral wall of the sub-outlet pipe 4 of the nozzle 6 in the open state to ensure the evaporation effect.

The dry salt is collected and transferred away. After the temperature rises, the ice cubes melt and the water obtained is treated water, which can meet the standards for farmland irrigation.

The above-mentioned ideal embodiments of the present invention serve as inspiration. Through the above description, relevant workers can make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the description, and must be determined based on the scope of the claims.

Claims (5)

1. The application method of the control rod for naturally freezing and desalting brackish water is characterized in that,

the control rod comprises a metal pipe (1), a submersible pump (2) arranged in the metal pipe (1) and a plurality of floating assemblies (3) sleeved on the metal pipe (1); wherein,

the length of the metal pipe (1) is greater than the depth of brackish water, the lower end part of the metal pipe (1) is in a pointed cone shape, a plurality of sieve holes (11) are formed in the position, close to the submersible pump (2), of the metal pipe (1), a groove (12) penetrating through the metal pipe (1) from top to bottom is formed in the peripheral wall of the metal pipe (1), and a heating rod (9) is arranged in the groove (12);

the submersible pump (2) is provided with a plurality of sub water outlet pipes (4) which extend out of the metal pipe (1) in the upward direction, and a water outlet of the sub water outlet pipes (4) is provided with a nozzle (6) with a switch (5);

-the floatation assembly (3) is configured to move downwards only with respect to the metal tube (1);

the floating assembly (3) comprises a movable ring (31) and a plurality of floating balls (33) which are distributed along the circumferential direction of the movable ring (31) and are connected to the movable ring (31) through horizontal rods (32), wherein the movable ring (31) is sleeved on the metal pipe (1) and is configured to move downwards only relative to the metal pipe (1);

the outer peripheral wall of the metal tube (1) is sequentially provided with a plurality of outer ratchets (13) from top to bottom, the movable ring (31) has elasticity, the inner peripheral wall is provided with a plurality of inner ratchets (311) from top to bottom, the inner ratchets (311) are matched with the outer ratchets (13), the upper tooth surface of the outer ratchets (13) is inclined outwards from top to bottom, and the lower tooth surface of the outer ratchets (13) is perpendicular to the axial direction of the metal tube (1);

the using method comprises the following steps:

step S1: arranging a plurality of control rods in a brackish water body to be treated, and ensuring that the lowest floating component (3) floats on the water surface, and after the temperature is reduced, the water surface is frozen, and the lowest floating component (3) and an ice layer are frozen together;

step S2: starting a submersible pump (2), pumping out water below the ice layer, spraying the water on the surface of the ice layer, and closing the submersible pump (2) after collecting water with the depth of 10-30 cm on the ice layer;

step S3: the water on the ice layers is frozen into new ice layers, the floating assemblies (3) at corresponding positions and the new ice layers are frozen together, then the ice in the grooves (12) is melted by heating through the heating rods (9), strong brine between adjacent ice layers flows down along the grooves (12), the upper ice layers move downwards and are attached to the lower ice layers, and the step S2 is returned until the water on the ice surfaces cannot be frozen;

step S4: each supporting rod is only provided with one nozzle (6) in an open state, a plurality of collecting frames are paved on the uppermost surface of the ice layer, the submersible pump (2) is continuously started, so that strong brine is continuously sprayed under the action of the submersible pump (2), the falling point is just in the collecting frames, and the strong brine is rapidly evaporated in a spraying state to obtain dry salt solids;

step S5: and (5) collecting and transferring the dried salt, and melting ice cubes after the temperature rises to obtain treated water.

2. The method of using a control lever for naturally freezing and desalinating brackish water of claim 1,

the device also comprises a plurality of anchors (7) which are connected to the metal pipe (1) and are used for anchoring at the bottom of the brackish water body.

3. The method of using a control lever for naturally freezing and desalinating brackish water of claim 2,

install metal sheet (8) on metal pipe (1), anchor (7) are connected through iron chain (10) on metal sheet (8), metal sheet (8) are located the top of the part that is the pointed cone form of metal pipe (1).

4. The method of using a control lever for naturally freezing and desalinating brackish water of claim 1,

the moving ring (31) is an unclosed ring.

5. The method of using a control lever for naturally freezing and desalinating brackish water of claim 1,

the spray nozzle (6) is obliquely upwards arranged, and the included angle between the water spraying direction of the spray nozzle (6) and the horizontal plane is 60 degrees.