A desalination device for high-concentration salt-containing wastewater treatment

Abstract

This utility model relates to the field of high-salinity wastewater treatment technology, and discloses a desalination device for treating high-concentration saline wastewater. The device includes a shell, within which an evaporation crystallization chamber and a cooling crystallization chamber are arranged from top to bottom. A support plate is provided above the evaporation crystallization chamber, and pull-out bottom plates are provided on the lower sides of both the evaporation crystallization chamber and the cooling crystallization chamber. A support column is provided on the support column, and an auxiliary fixing plate is provided on the support column. A transmission pipe runs through the middle of the support plate, and the bottom end of the transmission pipe extends into the evaporation crystallization chamber. By combining the evaporation crystallization chamber and the cooling crystallization chamber, water in high-concentration saline wastewater can be effectively evaporated, while salt crystallization is further promoted in the cooling crystallization chamber, thereby improving desalination efficiency. The transmission pipe allows for effective material transfer within the device, and the design of the connecting pipe and atomizing nozzle enables uniform spraying.

Description

Technical Field

[0001] This utility model relates to the field of high-salinity wastewater treatment technology, specifically to a desalination device for treating high-concentration saline wastewater. Background Technology

[0002] Existing technologies for treating high-concentration saline wastewater typically employ either evaporation or crystallization as a single method to remove salt. However, these methods often suffer from low efficiency, high energy consumption, difficult equipment maintenance, and incomplete treatment. For example, when using evaporation alone, the high salt concentration in the wastewater easily leads to scaling on the evaporator surface, affecting evaporation efficiency and increasing the difficulty of cleaning and maintenance. Conversely, crystallization alone may not be effective in treating high salt concentrations, resulting in poor desalination.

[0003] To address these issues, existing technologies attempt to improve desalination efficiency by increasing evaporation area, raising evaporation temperature, and using chemical additives. However, these methods are either costly or may introduce new pollution problems. Therefore, a new technological solution is needed that can improve desalination efficiency while reducing energy consumption, simplifying equipment maintenance, and ensuring treatment effectiveness. Utility Model Content

[0004] The purpose of this invention is to provide a desalination device for treating high-concentration saline wastewater, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a desalination device for treating high-concentration saline wastewater, comprising a shell, wherein an evaporation crystallization chamber and a cooling crystallization chamber are arranged from top to bottom inside the shell; a support plate is provided above the evaporation crystallization chamber, and a pull-out bottom plate is provided on the lower side of both the evaporation crystallization chamber and the cooling crystallization chamber; a support column is provided on the support column, and an auxiliary fixing plate is provided on the support column; a transmission pipe is provided through the middle of the support plate, the bottom end of the transmission pipe extends into the evaporation crystallization chamber, and the top end extends past the auxiliary fixing plate; a connecting pipe is provided horizontally at the bottom end of the transmission pipe, and atomizing nozzles are provided at both ends of the connecting pipe, the atomizing nozzles being arranged at a lateral inclination; a stirring fixing frame is provided on the connecting pipe, and a scraper is provided on the stirring fixing frame, the scraper simultaneously scraping the inner wall of the evaporation crystallization chamber and the upper side wall of the pull-out bottom plate; a drive motor is provided on the support plate, and sprockets are provided on the drive end of the drive motor and on the transmission pipe, the two sprockets being connected by a chain.

[0006] Preferably, the side wall of the housing is provided with a liquid inlet pipe and a pump connecting pipe extending into the evaporation crystallization chamber, the upper side of the evaporation crystallization chamber is connected to an evaporation pipe, and the pump connecting pipe is externally connected to a vacuum pump.

[0007] Preferably, a condenser tube is provided on the side wall of the housing and extends into the cooling crystallization chamber, and the condenser tube is externally connected to a condenser.

[0008] Preferably, the support plate is provided with a motor mounting bracket, and the drive motor is mounted on the motor mounting bracket.

[0009] Preferably, the base plate of the motor mounting bracket is provided with a strip groove, and a connecting bolt is inserted in the strip groove to connect with the bearing plate.

[0010] Preferably, the bearing plate is provided with a bolt fixing seat, and a fine-adjusting bolt is inserted in the bolt fixing seat. Rotating the fine-adjusting bolt adjusts the relative distance between the drive motor and the transmission pipe, thereby indirectly adjusting the tension of the chain.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. Improved desalination efficiency: By combining the use of the evaporation crystallization chamber and the cooling crystallization chamber, the water in high-concentration saline wastewater can be effectively evaporated, while the salt crystallization is further promoted in the cooling crystallization chamber, thereby improving the desalination efficiency.

[0013] 2. Optimized material transfer: The design of the transfer pipe allows for effective material transfer within the equipment, while the design of the connecting pipe and atomizing nozzle enables uniform spraying, ensuring that the material is fully processed in the evaporation and crystallization chamber.

[0014] 3. Improved stirring effect: The stirring frame and scraper can scrape the inner wall of the evaporation crystallization chamber and the upper side wall of the pull-out bottom plate, thereby improving the stirring effect of the material and promoting salt crystallization.

[0015] 4. Facilitates equipment maintenance: The pull-out base plate design makes cleaning and maintenance of the equipment's interior easier.

[0016] 5. Ensures stable equipment operation: The configuration of the drive motor and sprocket ensures stable movement of the transmission pipe, while the design of the fine-tuning bolt can adjust the relative distance between the drive motor and the transmission pipe, indirectly adjusting the chain tension and ensuring stable equipment operation.

[0017] 6. Improved energy efficiency: The design of connecting the pump to an external vacuum pump and the condenser to an external condenser via the pump connection pipe can effectively utilize energy and improve the energy efficiency of the entire desalination process. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0019] Figure 2 This is a side view of the present invention when the shell is removed;

[0020] Figure 3 This is a top view of the present invention when the shell is removed;

[0021] Figure 4 for Figure 1 A magnified structural diagram of point A in the middle.

[0022] In the diagram: 1. Shell; 2. Evaporation and crystallization chamber; 3. Cooling and crystallization chamber; 4. Support plate; 5. Pull-out bottom plate; 6. Support column; 7. Auxiliary fixing plate; 8. Transfer pipe; 9. Connecting pipe; 10. Atomizing nozzle; 11. Stirring fixing frame; 12. Scraper; 13. Drive motor; 14. Sprocket; 15. Chain; 16. Liquid inlet pipe; 17. Pump connecting pipe; 18. Evaporation pipe; 19. Vacuum pump; 20. Condenser pipe; 21. Condenser; 22. Motor fixing frame; 23. Drive motor; 24. Bolt fixing seat; 25. Fine-tuning bolt. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4 This invention provides a technical solution: A desalination device for treating high-concentration saline wastewater mainly consists of a housing 1. The internal structure of the housing 1 is ingeniously designed, with an evaporation crystallization chamber 2 and a cooling crystallization chamber 3 arranged sequentially from top to bottom to effectively separate the salt in the wastewater. A support plate 4 is specially designed above the evaporation crystallization chamber 2 for supporting and fixing the related equipment. Furthermore, both the lower sides of the evaporation crystallization chamber 2 and the cooling crystallization chamber 3 are equipped with pull-out base plates 5 to facilitate equipment maintenance and cleaning.

[0025] A support column 6 is mounted on the support plate 4, and an auxiliary fixing plate 7 is further provided on the support column 6 to enhance the stability and load-bearing capacity of the equipment. A through-type transmission pipe 8 is designed in the middle of the support plate 4, with its bottom end extending into the evaporation crystallization chamber 2 and its top end extending onto the auxiliary fixing plate 7. This design ensures that the transmission pipe 8 can effectively transport wastewater into the evaporation crystallization chamber 2.

[0026] The bottom end of the transmission pipe 8 is horizontally designed and connects to the connecting pipe 9. Both ends of the connecting pipe 9 are equipped with atomizing nozzles 10, which are set at a side angle to facilitate the uniform atomization and spraying of wastewater into the evaporation crystallization chamber 2. At the same time, the connecting pipe 9 is also equipped with a stirring and fixing frame 11, on which a scraper 12 is installed. The scraper 12 can scrape the inner wall of the evaporation crystallization chamber 2 and the upper side wall of the pull-out bottom plate 5 to promote the crystallization and separation of salts.

[0027] To automate the operation of the equipment, a drive motor 13 is specially equipped on the support plate 4. The drive end of the drive motor 13 is connected to the sprocket 14 on the transmission pipe 8, while another sprocket 14 is connected to the drive motor 13 via a chain 15. This combination of sprockets and chain not only ensures the stable operation of the equipment but also makes the operation of the entire desalination equipment more efficient and convenient.

[0028] Specifically, an inlet pipe 16 and a pump connection pipe 17 are specially designed and installed on the side wall of the shell 1, both of which extend into the internal space of the evaporation crystallization chamber 2. An evaporation pipe 18 is connected to the upper part of the evaporation crystallization chamber 2, which is responsible for discharging the gas generated during the evaporation process. A vacuum pump 19 is connected to the outer end of the pump connection pipe 17. The function of the vacuum pump 19 is to maintain the pressure inside the evaporation crystallization chamber 2 at a specific level, approximately 10 kPa, by drawing a vacuum. Under such pressure conditions, the solution in the evaporation crystallization chamber 2 can be further concentrated until the salt mass concentration exceeds 35%. When the solution reaches this concentration, NaCl crystals will begin to precipitate from the solution, thereby achieving salt separation and NaCl crystal formation.

[0029] Specifically, a condenser tube 20 is specially designed on the side wall of the shell 1, extending deep into the cooling crystallization chamber 3. The condenser tube 20 is connected to an external condenser 21, forming a highly efficient cooling system. When the brine passes through the cooling crystallization chamber 3, the system effectively reduces its temperature from 80°C to 40°C. During this cooling process, Na₂SO₄ crystals begin to precipitate from the solution, thus achieving the cooling crystallization process of the brine.

[0030] Specifically, on the surface of the support plate 4, we designed and installed a motor mounting bracket 22, which provides a stable mounting platform for the drive motor 13.

[0031] To ensure a more secure and reliable connection between the motor mounting bracket 22 and the support plate 4, the base plate of the motor mounting bracket 22 is specially designed with slots 23. Connecting bolts can be inserted into these slots 23 to tightly connect the motor mounting bracket 22 and the support plate 4 together.

[0032] In the structural design of the bearing plate 4, we have also specially set up a bolt fixing seat 24, which provides a precise installation position for the fine-tuning bolt 25. The fine-tuning bolt 25 is inserted into the bolt fixing seat 24, and by rotating the fine-tuning bolt 25, the relative position of the drive motor 13 with respect to the transmission pipe 8 can be finely adjusted. This adjustment method indirectly affects the tension of the chain 15, ensuring the stable operation and precise control of the entire transmission system.

[0033] Working principle: When this utility model is working, saline wastewater enters the evaporation and crystallization chamber 2 through the liquid inlet pipe 16, and at the same time, the pump connection pipe 17 is connected to the external vacuum pump 19 to maintain the pressure in the evaporation and crystallization chamber at about 10 kPa.

[0034] Under low pressure, the evaporation rate of water in wastewater accelerates, and the salt concentration gradually increases. When the salt mass concentration exceeds 35%, NaCl crystals begin to precipitate.

[0035] The precipitated NaCl crystals are atomized by the atomizing nozzle 10 on the connecting pipe 9, which is horizontally connected to the bottom of the transmission pipe 8. The atomizing nozzle 10 is set at a side tilt, which helps to spray evenly.

[0036] The stirring and fixing frame 11 and the scraper 12 scrape the inner wall of the evaporation crystallization chamber 2 and the upper side wall of the pull-out bottom plate 5 to prevent crystals from accumulating on the wall and to promote the uniform growth and collection of crystals.

[0037] The drive motor 13 drives the transmission tube 8 to rotate through the transmission of the sprocket 14 and the chain 15, so as to further stir and transport the crystals.

[0038] In the cooling crystallization chamber 3, a condenser 20 is provided on the side wall of the shell 1, and an external condenser 21 is connected to it to cool the brine from 80°C to 40°C.

[0039] During the cooling process, Na2SO4 crystals precipitate from the solution because the solubility of Na2SO4 decreases at lower temperatures.

[0040] The design of the motor mounting bracket 22 and the bolt mounting base 24 allows for fine-tuning of the position of the drive motor 13. The tension of the chain 15 can be adjusted by rotating the fine-tuning bolt 25, ensuring the stability and efficiency of the equipment operation.

[0041] The entire device works through two stages: evaporation and cooling, which precipitate NaCl and Na2SO4 crystals respectively, thus achieving effective desalination of high-concentration saline wastewater.

[0042] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0043] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A desalination device for treating high-concentration saline wastewater, characterized in that: Includes a shell (1), and the shell (1) is provided with an evaporation crystallization chamber (2) and a cooling crystallization chamber (3) from top to bottom. A support plate (4) is provided above the evaporation crystallization chamber (2), and a pull-out bottom plate (5) is provided on the lower side of the evaporation crystallization chamber (2) and the lower side of the cooling crystallization chamber (3). The support plate (4) is provided with a support column (6), the support column (6) is provided with an auxiliary fixing plate (7), and a transmission pipe (8) is provided through the middle of the support plate (4). The bottom end of the transmission pipe (8) extends into the evaporation crystallization chamber (2), and the top end extends through the auxiliary fixing plate (7). The bottom end of the transmission pipe (8) is provided with a connecting pipe (9) in a horizontal direction. Both ends of the connecting pipe (9) are provided with atomizing nozzles (10). The atomizing nozzles (10) are set in a side-inclined position. At the same time, the connecting pipe (9) is provided with a stirring fixing frame (11). The stirring fixing frame (11) is provided with a scraper (12). The scraper (12) scrapes the inner wall of the evaporation crystallization chamber (2) and the upper side wall of the pull-out bottom plate (5) simultaneously. The support plate (4) is provided with a drive motor (13), and the drive end of the drive motor (13) and the transmission pipe (8) are both provided with sprockets (14). The two sprockets (14) are connected by a chain (15).

2. The desalination equipment for treating high-concentration saline wastewater according to claim 1, characterized in that: The side wall of the housing (1) is provided with an inlet pipe (16) and a pump connecting pipe (17) extending into the evaporation crystallization chamber (2). An evaporation pipe (18) is connected to the upper side of the evaporation crystallization chamber (2), and a vacuum pump (19) is connected to the pump connecting pipe (17).

3. The desalination equipment for treating high-concentration saline wastewater according to claim 1, characterized in that: A condenser tube (20) is provided on the side wall of the housing (1) and extends into the cooling crystallization chamber (3). The condenser tube (20) is externally connected to a condenser (21).

4. The desalination equipment for treating high-concentration saline wastewater according to claim 1, characterized in that: The support plate (4) is provided with a motor mounting bracket (22), and the drive motor (13) is mounted on the motor mounting bracket (22).

5. The desalination equipment for treating high-concentration saline wastewater according to claim 4, characterized in that: The base plate of the motor mounting bracket (22) is provided with a strip groove (23), and a connecting bolt is inserted in the strip groove (23) to connect with the bearing plate (4).

6. The desalination equipment for treating high-concentration saline wastewater according to claim 4 or 5, characterized in that: The bearing plate (4) is provided with a bolt fixing seat (24), and a fine adjustment bolt (25) is inserted in the bolt fixing seat (24). Rotating the fine adjustment bolt (25) adjusts the relative distance between the drive motor (13) and the transmission pipe (8), thereby indirectly adjusting the tension of the chain (15).

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