A clog-resistant wastewater evaporator with a clean structure

Abstract

A clog-resistant wastewater evaporator with a cleaning structure includes an evaporator assembly. The evaporator assembly includes a heating chamber with a bottom flange connected to a sludge collection hopper and a top flange connected to the evaporation chamber. A cleaning assembly includes a drive rod with a scraper on the outer wall of its inclined end. The scraper adheres to the inner wall of the sludge collection hopper and scrapes away impurities when rotated. A backflushing water pipe is installed inside the drive rod. Through a spiral flow channel design in the heating tube combined with centrifugal force, solid particles move towards the tube wall and are ultrasonically broken up, preventing blockage in the center of the tube. Simultaneously, the variable-diameter heating tube, combined with an ultrasonic transducer, effectively improves liquid flow rate and heat transfer efficiency, further preventing the deposition of adhesive impurities and improving overall wastewater discharge smoothness.

Description

Technical Field

[0001] This utility model belongs to the technical field of wastewater evaporators, specifically relating to an anti-clogging wastewater evaporator with a cleaning structure. Background Technology

[0002] Currently, most industrial wastewater evaporators adopt tubular or plate heat exchange structures. When the waste liquid flows on the heating surface, dissolved impurities are concentrated and precipitated to form scale, while suspended solids are deposited due to insufficient flow rate. Typical equipment includes a heating chamber, a separation chamber, a circulation pump, and a demister. Its working process is as follows: the waste liquid is sent into the heating tube bundle by the circulation pump, and after being heated, it partially vaporizes. The concentrated liquid is returned to the heating chamber to continue circulating.

[0003] However, existing technologies have the following problems: the vertical tube design of tubular evaporators is prone to forming sedimentation dead zones at the bottom; when the circulation pump flow rate is insufficient, suspended matter accumulates at pipe bends; traditional mechanical scraping devices can only handle the deposits on the heating surface and cannot remove the deposits inside the pipes; in addition, high-viscosity waste liquid is prone to forming gel-like substances in the low-temperature zone that clog the pipes, requiring frequent shutdowns for cleaning, which leads to increased energy consumption.

[0004] Therefore, the present invention provides an anti-clogging wastewater evaporator with a clean structure, which meets market demand. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide a clog-resistant wastewater evaporator with a clean structure.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a clog-resistant wastewater evaporator with a cleaning structure, comprising an evaporator assembly, wherein the evaporator assembly includes a heating chamber, a sludge collection hopper is connected to the bottom flange of the heating chamber, and an evaporation chamber is connected to the top flange of the heating chamber; a cleaning assembly, wherein the cleaning assembly includes a drive rod, and a scraper is provided on the outer wall of the inclined end of the drive rod, the scraper is attached to the inner wall of the sludge collection hopper, and the scraper is used to scrape the inner wall of the sludge collection hopper when rotating; a backwash water pipe is provided inside the drive rod, and a one-way nozzle is provided on the backwash water pipe corresponding to the sludge collection hopper for backwashing the inner wall of the sludge collection hopper; a central circulation pipe, wherein the central circulation pipe is fixedly connected to the axial direction of the heating chamber, and several sets of heating pipes are evenly distributed circumferentially between the central circulation pipe and the heating chamber, and the heating pipes have a spiral structure.

[0007] In some embodiments, a secondary steam pipe is connected to the top of the evaporation chamber, a sludge pipe runs through one side of the evaporation chamber, a heating steam pipe and a condensate drain pipe run through one side of the heating chamber, and a drain pipe is integrally connected to the bottom of the sludge collection hopper.

[0008] In some embodiments, the sewage pipe and the drain pipe form a circulation system through a circulation pump and a separator, and an ejector is added to the outlet of the circulation pump.

[0009] In some embodiments, the cleaning assembly further includes a support frame, which is fixedly connected to the outer wall of the sludge collection hopper. A servo motor is fixedly connected to the bottom of the support frame, and a first gear is fixedly connected to the output end of the servo motor. A second gear meshes with the outside of the first gear, and the center of the second gear is fixedly connected to the outer wall of the drive rod.

[0010] In some embodiments, the vertical end of the drive rod is coaxially distributed with the vertical end of the drain pipe, and the drive rod extends to the outside of the drain pipe. The vertical end of the drive rod is rotatably and sealed to the center of the vertical end of the drain pipe. The scraper has a convex-shaped structure, and the nozzles of the backwash pipe are distributed in the recesses on both sides of the convex-shaped structure.

[0011] In some embodiments, the heating tube has a variable diameter structure, with the tube diameter gradually decreasing from 80mm at the inlet to 50mm at the outlet. An ultrasonic transducer is embedded in the wall of the heating tube, the inclination angle of the heating tube is 15°, and the pitch decreases proportionally with the tube diameter.

[0012] The scope of this utility model is not limited to technical solutions formed by specific combinations of the above-mentioned technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-mentioned technical features or their equivalent features. For example, technical solutions formed by substituting the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

[0013] Due to the application of the above technical solutions, this utility model has the following advantages compared with the prior art: This utility model provides a clog-resistant wastewater evaporator with a clean structure. Through the spiral flow channel design of the heating tube combined with centrifugal force, solid particles move towards the tube wall and are ultrasonically broken, avoiding blockage in the center of the tube cavity. At the same time, the variable diameter heating tube combined with the ultrasonic transducer can effectively improve the liquid flow rate and heat transfer efficiency, further preventing the deposition of adhesive impurities and improving the overall smoothness of sewage discharge. The convex scraper combined with the double-sided nozzle design of the backwash water pipe can realize the self-cleaning function of the inner wall of the collection hopper under the drive of the drive rod, reducing manual intervention and ensuring the long-term stable operation of the sewage discharge system. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 This is a schematic diagram of the heating tube distribution structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the axial cross-sectional structure of the evaporator of this utility model;

[0017] Figure 4 For the present utility model Figure 3 A magnified structural diagram of A in the middle;

[0018] The components include: 1. Evaporator assembly; 11. Heating chamber; 12. Sludge collection hopper; 13. Evaporation chamber; 14. Secondary steam pipe; 15. Sludge pipe; 16. Heating steam pipe; 17. Condensate drain pipe; 18. Sludge drain pipe; 2. Cleaning assembly; 21. Support frame; 22. Servo motor; 23. First gear; 24. Second gear; 25. Drive rod; 26. Backwash water pipe; 27. Scraper; 3. Central circulation pipe; 4. Heating pipe. Detailed Implementation

[0019] 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.

[0020] like Figure 1-4 As shown, this utility model provides an anti-clogging wastewater evaporator with a cleaning structure, including an evaporator assembly 1, which includes a heating chamber 11, a sludge collection hopper 12 connected to the bottom flange of the heating chamber 11, and an evaporation chamber 13 connected to the top flange of the heating chamber 11; and a cleaning assembly 2, which includes a drive rod 25, and a scraper 27 is provided on the outer wall of the inclined end of the drive rod 25. The scraper 27 is attached to the inner wall of the sludge collection hopper 12, and is used to scrape the inner wall of the sludge collection hopper 12 when it rotates. The rod 25 is equipped with a backwash water pipe 26, and the backwash water pipe 26 is equipped with a one-way nozzle at the corresponding position of the sludge collection hopper 12 for backwashing the inner wall of the sludge collection hopper 12; the central circulation pipe 3 is fixedly connected to the axial position of the heating chamber 11, and several sets of heating pipes 4 are evenly distributed around the circumference between the central circulation pipe 3 and the heating chamber 11, and the heating pipes 4 are spiral in structure. The spiral structure makes the flow channel spiral upward, and the centrifugal force generated by its upward movement causes the particles to move towards the pipe wall.

[0021] A secondary steam pipe 14 is connected to the top of the evaporation chamber 13, a sludge pipe 15 runs through one side of the evaporation chamber 13, a heating steam pipe 16 and a condensate drain pipe 17 run through one side of the heating chamber 11, and a drain pipe 18 is integrally connected to the bottom of the sludge collection hopper 12.

[0022] The sewage pipe 15 and the sewage pipe 18 form a circulation system through a circulation pump and a separator. An ejector is added to the outlet of the circulation pump. The addition of the ejector causes the added cleaning airflow to form gas-liquid turbulence, which continuously cleans the pipeline without stopping the machine. The air inlet of the ejector is connected to the steam pipeline, and heat energy is recovered by using secondary steam.

[0023] The cleaning component 2 also includes a support frame 21, which is fixedly connected to the outer wall of the sludge collection hopper 12. A servo motor 22 is fixedly connected to the bottom of the support frame 21. A first gear 23 is fixedly connected to the output end of the servo motor 22. A second gear 24 meshes with the outside of the first gear 23. The center of the second gear 24 is fixedly connected to the outer wall of the drive rod 25. The vertical end of the drive rod 25 is coaxially distributed with the vertical end of the drain pipe 18, and the drive rod 25 extends through to the outside of the drain pipe 18. The vertical end of the drive rod 25 is rotatably and sealed to the center of the vertical end of the drain pipe 18. (The last sentence appears to be incomplete and possibly refers to a scraper.) The scraper 27 has a convex shape, and the nozzles of the backwash water pipe 26 are distributed in the recesses on both sides of the convex shape. When the servo motor 22 is started, the drive rod 25 is driven to rotate under the transmission of the first gear 23 and the second gear 24, which further causes the scraper 27 to scrape the inner wall of the sludge collection hopper 12. At the same time, the nozzles in the recesses on both sides of the scraper 27 backwash the impurities on the inner wall of the sludge collection hopper 12, thereby improving its cleaning efficiency and realizing the stable operation of the device for sewage discharge. A solenoid valve is provided between the backwash water pipe 26 and the sludge collection hopper 12. The scraper 27 triggers a pulse backwash once every one rotation.

[0024] Heating tube 4 has a variable diameter structure, with the diameter gradually decreasing from 80mm at the inlet to 50mm at the outlet. An ultrasonic transducer is embedded in the wall of heating tube 4. The inclination angle of heating tube 4 is 15°, and the pitch decreases proportionally with the tube diameter. The ultrasonic transducer is designed to break up particulate matter through ultrasonic vibration during operation, thereby preventing it from adhering to the inner wall of heating tube 4. The resistance of heating tube 4 is monitored by a differential pressure sensor. When the differential pressure is >0.3MPa, the ultrasonic transducer is triggered to work, realizing the ultrasonic cleaning mode.

[0025] Working principle: Waste liquid enters through the sewage pipe 15 and forms a natural circulation through the density difference between the central circulation pipe 3 and the surrounding heating pipe 4, realizing continuous evaporation of waste liquid. The sediment generated at the bottom of the central circulation pipe 3 and the heating pipe 4 is collected in the sludge collection hopper 12. Further driven by the cleaning component 2, the drive rod 25 drives the scraper 27 to rotate, thereby scraping the inner wall of the sludge collection hopper 12. At the same time, with the backwash water pipe 26, the inner wall of the sludge collection hopper 12 is backwashed and cleaned. After being discharged through the sewage pipe 18, it is separated and filtered.

[0026] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A clog-resistant wastewater evaporator with a clean structure, characterized in that: The evaporator assembly (1) includes a heating chamber (11), the bottom flange of which is connected to a sludge collection hopper (12), and the top flange of which is connected to an evaporation chamber (13). The cleaning component (2) includes a drive rod (25), and a scraper (27) is provided on the outer wall of the inclined end of the drive rod (25). The scraper (27) is attached to the inner wall of the sludge collection hopper (12), and the scraper (27) is used to scrape the inner wall of the sludge collection hopper (12) when it rotates. A backwash water pipe (26) is provided inside the drive rod (25), and a one-way nozzle is provided on the backwash water pipe (26) corresponding to the sludge collection hopper (12) for backwashing the inner wall of the sludge collection hopper (12). The central circulation pipe (3) is fixedly connected to the axial direction of the heating chamber (11), and several sets of heating pipes (4) are evenly distributed around the circumference between the central circulation pipe (3) and the heating chamber (11), and the heating pipes (4) are spiral structures.

2. The anti-clogging wastewater evaporator with a clean structure according to claim 1, characterized in that: The top of the evaporation chamber (13) is connected to a secondary steam pipe (14), a sludge pipe (15) runs through one side of the evaporation chamber (13), a heating steam pipe (16) and a condensate drain pipe (17) run through one side of the heating chamber (11), and a drain pipe (18) is integrally connected to the bottom of the sludge collection hopper (12).

3. The anti-clogging wastewater evaporator with a cleaning structure according to claim 2, characterized in that: The sewage pipe (15) and the sewage pipe (18) form a circulation system through a circulation pump and a separator, and an ejector is added to the outlet of the circulation pump.

4. The anti-clogging wastewater evaporator with a cleaning structure according to claim 1, characterized in that: The cleaning component (2) also includes a support frame (21), which is fixedly connected to the outer wall of the sludge collection hopper (12). A servo motor (22) is fixedly connected to the bottom of the support frame (21), and a first gear (23) is fixedly connected to the output end of the servo motor (22). A second gear (24) meshes with the outside of the first gear (23), and the center of the second gear (24) is fixedly connected to the outer wall of the drive rod (25).

5. The anti-clogging wastewater evaporator with a cleaning structure according to claim 4, characterized in that: The vertical end of the drive rod (25) is coaxial with the vertical end of the drain pipe (18), and the drive rod (25) extends through to the outside of the drain pipe (18). The vertical end of the drive rod (25) is sealed and rotatably connected to the center of the vertical end of the drain pipe (18). The scraper (27) has a convex shape, and the nozzles of the backwash pipe (26) are distributed in the recesses on both sides of the convex shape.

6. The anti-clogging wastewater evaporator with a cleaning structure according to claim 5, characterized in that: The heating tube (4) has a variable diameter structure, and the tube diameter gradually decreases from 80mm at the inlet to 50mm at the outlet. An ultrasonic transducer is embedded in the tube wall of the heating tube (4). The inclination angle of the heating tube (4) is 15°, and the pitch decreases proportionally with the tube diameter.

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