Evaporative crystallizer for industrial wastewater MVR post section

Abstract

The utility model relates to evaporative crystallizer technical field discloses a kind of evaporative crystallizer for industrial wastewater MVR rear section, including support frame, the heating bucket is fixedly connected in support frame inside, the hollow column is fixedly connected in heating bucket inside, the crystallization cavity is slidably connected in heating bucket inside, the water inlet is established in the crystallization cavity top, the discharge port is established in the crystallization cavity top, the limit component is arranged in heating bucket inside, the jacking assembly is arranged in heating bucket top;The jacking assembly includes sliding column, and the sliding column top is fixedly connected in the crystallization cavity bottom.In the utility model, by pulling limit component, make the bolt in limit component and the outer wall of crystallization cavity separate, so as to reach the effect that the crystal in crystallization cavity is completely removed, solve the traditional discharging mode, easily lead to the problem that crystal is not completely removed and crystal is broken, improve the discharging efficiency of crystallizer.

Description

Technical Field

[0001] This utility model relates to the field of evaporation crystallizer technology, and in particular to an evaporation crystallizer for the downstream stage of industrial wastewater MVR. Background Technology

[0002] Industrial wastewater treatment is a crucial aspect of environmental protection and resource recovery. Among these technologies, MVR (Mechanical Vapor Recompression) is widely used in the evaporation and concentration process of high-salt wastewater due to its high efficiency and energy saving. In the downstream section of the MVR system, the evaporator crystallizer is a key device for achieving salt crystallization and separation, and its performance directly affects the crystal purity and recovery efficiency. However, traditional evaporator crystallizers still have many shortcomings in the crystal collection and feeding stages, especially the problems of incomplete crystal removal and high breakage rate, which not only waste resources but also increase subsequent processing costs. Therefore, developing an evaporator crystallizer that can efficiently and completely recover crystals is of great significance for improving the economy and environmental protection of industrial wastewater treatment.

[0003] Existing evaporation crystallizers typically use bottom discharge or centrifugal separation to collect crystals. Bottom discharge structures use gravity to cause crystals to settle to the bottom of a cone, and then discharge them through valves or screw conveyors. Centrifugal separation uses a high-speed rotating drum to separate the crystals from the mother liquor.

[0004] The main problems with existing technologies are incomplete crystal removal and easy breakage. Traditional feeding methods, such as bottom valve discharge or scraper removal, can easily cause some crystals to adhere to the inner wall or bottom of the crystallization chamber, which is difficult to remove completely, thus reducing the recovery rate. At the same time, mechanical scraping or squeezing can damage the crystal structure and produce fine particles, which not only affect product quality but also block pipes or increase the burden on subsequent filtration. To address these issues, an evaporation crystallizer for the downstream stage of industrial wastewater MVR is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an evaporation crystallizer for the downstream stage of industrial wastewater MVR, aiming to improve the problems of incomplete crystal removal and crystal breakage caused by the traditional feeding method in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an evaporator crystallizer for the downstream section of an industrial wastewater MVR, comprising a support frame, a heating tank fixedly connected inside the support frame, a hollow column fixedly connected inside the heating tank, a crystallization chamber slidably connected inside the heating tank, a water inlet at the top of the crystallization chamber, a material outlet at the top of the crystallization chamber, a limit component inside the heating tank, and a lifting component at the top of the heating tank; The lifting assembly includes a sliding column, the top of which is fixedly connected to the bottom of the crystallization chamber. The sliding column is slidably connected inside the hollow column. A second spring is installed inside the hollow column, one end of which is fixedly connected to the bottom of the sliding column, and the other end of which is fixedly connected inside the hollow column. A drain pipe is fixedly connected to the bottom of the crystallization chamber. A valve is installed on the outer wall of the drain pipe, and an interception assembly is installed inside the drain pipe.

[0007] As a further description of the above technical solution: The limiting component includes a pin and a pull rod. The pin is slidably connected inside the heating barrel, and one end of the pull rod is fixedly connected to the side wall of the pin.

[0008] As a further description of the above technical solution: A fixed frame is fixedly connected to the outer wall of the heating barrel, and the pull rod is slidably connected inside the fixed frame.

[0009] As a further description of the above technical solution: A spring is fitted on the outer wall of the pull rod. One end of the spring is fixedly connected to the side wall of the pin, and the other end of the spring is fixedly connected to the inside of the fixed frame.

[0010] As a further description of the above technical solution: The interception component includes a collection frame and a filter screen. The collection frame is slidably connected inside the sewage pipe, and the filter screen is disposed inside the collection frame.

[0011] As a further description of the above technical solution: The outer wall of the sewage pipe is slidably connected to a sliding sleeve, and the sliding sleeve has a groove inside.

[0012] As a further description of the above technical solution: The sewage pipe is internally connected to a trapezoidal locking post, which engages with the collection frame.

[0013] As a further description of the above technical solution: A spring is fitted on the outer wall of the crystallization chamber. One end of the spring is fixedly connected to the outer wall of the drain pipe, and the other end of the spring is fixedly connected to the inner wall of the sliding sleeve.

[0014] This utility model has the following beneficial effects: 1. In this utility model, by pulling the limiting component, the pin inside the limiting component is separated from the outer wall of the crystallization cavity. Then, the spring releases the elastic force, causing the sliding column to slide inside the hollow column and drive the crystallization cavity to rise upward, thereby achieving the effect of completely removing the crystal inside the crystallization cavity. This solves the problem of incomplete crystal removal and crystal breakage that is common in traditional feeding methods, and improves the feeding efficiency of the crystallizer.

[0015] 2. In this utility model, the trapezoidal locking post is separated from the collection frame by the compression of the sliding sleeve and the spring three. Then, the filter screen is moved downward by the sliding collection frame, so that the trapezoidal locking post slides into the groove. This achieves the effect of disassembling the collection frame and the filter screen, which solves the problem of wastewater causing small crystals to flow out during sewage discharge, resulting in waste of crystal raw materials and improves the utilization efficiency of crystals. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of an evaporator crystallizer for the downstream stage of an industrial wastewater MVR system proposed in this utility model. Figure 2 This is a schematic diagram of the crystallization chamber structure of an evaporator crystallizer used in the downstream section of an industrial wastewater MVR system, as proposed in this utility model. Figure 3 This is a schematic diagram of the sliding column structure of an evaporator crystallizer used in the downstream section of an industrial wastewater MVR system, as proposed in this utility model. Figure 4 This is a cross-sectional structural diagram of a collection frame for an evaporator crystallizer used in the downstream stage of an industrial wastewater MVR system, as proposed in this utility model.

[0017] Legend: 1. Support frame; 2. Heating tank; 3. Hollow column; 4. Drain pipe; 5. Feed port; 6. Water inlet; 7. Crystallization chamber; 8. Pin; 9. Pull rod; 10. Spring 1; 11. Fixing frame; 12. Sliding column; 13. Spring 2; 14. Valve; 15. Sliding sleeve; 16. Spring 3; 17. Trapezoidal locking post; 18. Groove; 19. Collection frame; 20. Filter screen. Detailed Implementation

[0018] 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.

[0019] Reference Figure 1 - Figure 3This utility model provides an embodiment of an evaporator crystallizer for the downstream section of an industrial wastewater MVR system, comprising a support frame 1, which provides stable support for the overall structure and fixes the position of other components; a heating tank 2 is fixedly connected inside the support frame 1, which provides a heat source to evaporate the wastewater and promote crystal formation; a hollow column 3 is fixedly connected inside the heating tank 2, which guides the movement of a sliding column 12 and provides installation space for a spring 13; a crystallization chamber 7 is slidably connected inside the heating tank 2, which contains wastewater and forms crystals during the evaporation process; a water inlet 6 is provided at the top of the crystallization chamber 7, which injects industrial wastewater to be treated into the crystallization chamber 7; a discharge port 5 is provided at the top of the crystallization chamber 7, which discharges the crystals after crystallization; a limiting component is provided inside the heating tank 2, which fixes the position of the crystallization chamber 7 to prevent it from moving in a non-operating state; and a lifting component is provided at the top of the heating tank 2, which lifts the crystallization chamber 7 when discharge is required so that the crystals can be completely discharged. The lifting assembly includes a sliding column 12, which transmits the elastic force of spring 13 and drives the crystallization chamber 7 to move up and down. The top of the sliding column 12 is fixedly connected to the bottom of the crystallization chamber 7, and the sliding column 12 is slidably connected inside the hollow column 3. Spring 13 is installed inside the hollow column 3. Spring 13 provides elastic force to automatically lift the crystallization chamber 7 after the sliding column 12 is released from its limit. One end of spring 13 is fixedly connected to the bottom of the sliding column 12, and the other end of spring 13 is fixedly connected to the inside of the hollow column 3. A drain pipe 4 is fixedly connected to the bottom of the crystallization chamber 7. The drain pipe 4 is used to discharge the mother liquor or cleaning wastewater generated during the crystallization process. A valve 14 is installed on the outer wall of the drain pipe 4. The valve 14 is used to control the opening and closing of the drain pipe 4. An interception assembly is installed inside the drain pipe 4. The interception assembly is used to prevent crystals from being lost with the mother liquor and to improve the crystal recovery rate.

[0020] Reference Figure 1 - Figure 3The limiting assembly includes a pin 8 and a pull rod 9. The pin 8 is used to insert or withdraw from the limiting hole on the outer wall of the crystallization chamber 7 to fix or release the crystallization chamber 7. The pin 8 is slidably connected inside the heating tank 2. The pull rod 9 is used to manually operate the movement of the pin 8. One end of the pull rod 9 is fixedly connected to the side wall of the pin 8. A fixing frame 11 is fixedly connected to the outer wall of the heating tank 2. The fixing frame 11 is used to provide a sliding track and support structure for the pull rod 9. The pull rod 9 is slidably connected inside the fixing frame 11. A spring 10 is sleeved on the outer wall of the pull rod 9. The spring 10 provides a reset function to keep the pin 8 locked when the pull rod 9 is not pulled. One end of the spring 10 is fixedly connected to the side wall of the pin 8, and the other end of the spring 10 is fixedly connected inside the fixing frame 11. The interception assembly includes a collection frame 19 and a filter screen 20. The collection frame 19 is used to collect small crystals discharged with the drain pipe 4. The collection frame 19 is slidably connected to the side wall of the pin 8. Inside the drain pipe 4, a filter screen 20 is used to filter crystal particles in the mother liquor to prevent them from being lost. The filter screen 20 is set inside the collection frame 19. A sliding sleeve 15 is slidably connected to the outer wall of the drain pipe 4. The sliding sleeve 15 is used to control the engagement state of the trapezoidal locking post 17 to realize the fixing or disassembly of the collection frame 19. A groove 18 is opened inside the sliding sleeve 15. The groove 18 is used to accommodate the trapezoidal locking post 17 when disassembling the collection frame 19. The trapezoidal locking post 17 is slidably connected inside the drain pipe 4. The trapezoidal locking post 17 is used to form a detachable engagement connection with the collection frame 19. The trapezoidal locking post 17 is engaged with the collection frame 19. A spring 16 is sleeved on the outer wall of the crystallization chamber 7. The spring 16 is used to maintain the engagement state of the trapezoidal locking post 17 and the collection frame 19 when the sliding sleeve 15 is not operated. One end of the spring 16 is fixedly connected to the outer wall of the drain pipe 4, and the other end of the spring 16 is fixedly connected to the inner wall of the sliding sleeve 15.

[0021] Working Principle: When using the evaporator crystallizer to treat wastewater, the wastewater is first injected into the crystallization chamber 7 through the water inlet 6 for evaporation and crystallization. After crystallization, pulling the lever 9 causes the pin 8 to slide inside the heating tank 2. Simultaneously, the lever 9 slides inside the fixed frame 11, compressing the spring 10 and disengaging the pin 8 from the top of the crystallization chamber 7. Then, the compressed spring 13 releases its elasticity, causing the sliding column 12 to slide upward inside the hollow column 3, thus ejecting the crystallization chamber 7 and facilitating material discharge. When wastewater needs to be discharged during the crystallization process, the drain pipe 4 is opened by controlling the valve 14, and then the wastewater... The crystallization chamber 7 discharges outwards. When the sewage is discharged, the small crystals carried out by the water flow are intercepted by the filter screen 20 and collected by the collection frame 19 and filter screen 20 inside the sewage pipe 4. The collection frame 19 and filter screen 20 are quick to disassemble. By sliding the sliding sleeve 15 on the outer wall of the sewage pipe 4, the spring 16 is compressed, so that the groove 18 is flush with the trapezoidal locking post 17. Then, by pulling the collection frame 19 downwards, the trapezoidal locking post 17 is squeezed, so that the trapezoidal locking post 17 slides into the groove 18, thereby achieving the purpose of disassembling the collection frame 19 and collecting the crystals inside the collection frame 19.

[0022] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An evaporator crystallizer for the downstream stage of industrial wastewater MVR, comprising a support frame (1), characterized in that: The support frame (1) is fixedly connected to a heating barrel (2), the heating barrel (2) is fixedly connected to a hollow column (3), the heating barrel (2) is slidably connected to a crystallization chamber (7), the crystallization chamber (7) has a water inlet (6) at the top, the crystallization chamber (7) has a discharge port (5) at the top, the heating barrel (2) is provided with a limit component, and the heating barrel (2) is provided with a lifting component at the top. The lifting assembly includes a sliding column (12), the top of which is fixedly connected to the bottom of the crystallization chamber (7), the sliding column (12) is slidably connected inside the hollow column (3), a second spring (13) is provided inside the hollow column (3), one end of the second spring (13) is fixedly connected to the bottom of the sliding column (12), the other end of the second spring (13) is fixedly connected to the inside of the hollow column (3), a drain pipe (4) is fixedly connected to the bottom of the crystallization chamber (7), a valve (14) is provided on the outer wall of the drain pipe (4), and an interception assembly is provided inside the drain pipe (4).

2. The evaporator crystallizer for the downstream stage of industrial wastewater MVR according to claim 1, characterized in that: The limiting component includes a pin (8) and a pull rod (9). The pin (8) is slidably connected inside the heating barrel (2), and one end of the pull rod (9) is fixedly connected to the side wall of the pin (8).

3. An evaporator crystallizer for the downstream stage of industrial wastewater MVR according to claim 2, characterized in that: The heating barrel (2) is fixedly connected to a fixed frame (11) on its outer wall, and the pull rod (9) is slidably connected inside the fixed frame (11).

4. An evaporator crystallizer for the downstream stage of industrial wastewater MVR according to claim 3, characterized in that: The outer wall of the pull rod (9) is fitted with a spring (10), one end of the spring (10) is fixedly connected to the side wall of the pin (8), and the other end of the spring (10) is fixedly connected to the inside of the fixed frame (11).

5. An evaporator crystallizer for the downstream stage of industrial wastewater MVR according to claim 1, characterized in that: The interception component includes a collection frame (19) and a filter screen (20). The collection frame (19) is slidably connected inside the drain pipe (4), and the filter screen (20) is disposed inside the collection frame (19).

6. An evaporator crystallizer for the downstream stage of industrial wastewater MVR according to claim 5, characterized in that: The outer wall of the sewage pipe (4) is slidably connected to a sliding sleeve (15), and the sliding sleeve (15) has a groove (18) inside.

7. An evaporator crystallizer for the downstream stage of industrial wastewater MVR according to claim 6, characterized in that: The drain pipe (4) is slidably connected to a trapezoidal locking post (17), which engages with the collection frame (19).

8. An evaporator crystallizer for the downstream stage of industrial wastewater MVR according to claim 7, characterized in that: The outer wall of the crystallization cavity (7) is fitted with a spring three (16), one end of the spring three (16) is fixedly connected to the outer wall of the sewage pipe (4), and the other end of the spring three (16) is fixedly connected to the inner wall of the sliding sleeve (15).

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