Energy-saving type waste water evaporator capable of recovering steam waste heat

Abstract

The utility model relates to the technical field of waste water evaporators, in particular to an energy-saving waste water evaporator capable of recovering steam waste heat, which comprises a treatment tank, an inner cavity is arranged in the treatment tank, an evaporation bin is arranged at the upper position of the inner cavity in the treatment tank, and a recovery mechanism for recovering waste heat is arranged on the evaporation bin. The recovery mechanism comprises an upper ring pipe, a lower ring pipe and a spiral conveying pipe, according to the energy-saving type waste water evaporator capable of recovering the steam waste heat, through the arrangement of the upper ring pipe, the spiral conveying pipe and the lower ring pipe, under the adsorption effect of the air heating conveying device, high-temperature steam sprayed downwards by the waste water pipe is rapidly and instantly absorbed, and the waste heat recovery efficiency is improved. And when passing through a bolt conveying pipe, heat is transferred into the evaporation bin to be used for increasing the temperature, and is conveyed into the air heating and conveying device through a second ventilation pipeline to be circularly heated and utilized, so that effective and full utilization of waste heat is realized, and heat waste is reduced.

Description

Technical Field

[0001] This utility model relates to the field of wastewater evaporator technology, specifically to an energy-saving wastewater evaporator that can recover steam waste heat. Background Technology

[0002] Wastewater evaporators are designed for chemical organic wastewater with high salt content and high concentration. Based on the principle of evaporation, concentration and crystallization, they use multi-effect vacuum evaporation to concentrate and crystallize organic wastewater. After separating the salt in the concentrate, it is recovered through a salt collector. The concentrate is then dried and recovered or incinerated. The condensate after evaporation is generally treated by subsequent biochemical treatment to meet the wastewater discharge standards.

[0003] When evaporating and separating wastewater, high-temperature air is used to raise the temperature and evaporate the water in the wastewater. During the evaporation and separation process, high-temperature water vapor is generated. Existing wastewater evaporators do not have the function of recovering and utilizing water vapor. Instead, the treated water vapor is directly discharged, resulting in heat waste. To address the above problems, this application designs an energy-saving wastewater evaporator that can recover steam waste heat. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides an energy-saving wastewater evaporator that can recover steam waste heat.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a wastewater evaporator capable of recovering steam waste heat and providing energy saving, comprising a treatment tank, an inner cavity inside the treatment tank, an evaporation chamber located at the upper part of the inner cavity, a recovery mechanism for recovering waste heat on the evaporation chamber, the recovery mechanism comprising an upper ring pipe, a lower ring pipe, and a spiral conveying pipe, four spiral conveying pipes evenly distributed between the upper and lower ring pipes, the spiral conveying pipes being connected to both the upper and lower ring pipes, an air inlet at the bottom end of the lower ring pipe, and the upper and lower ring pipes being fixed to the evaporation chamber. On the outer wall of the chamber, both the upper and lower ring pipes are fixed to the inner wall of the processing tank. Multiple wastewater pipes are fixed on the evaporation chamber. The lower end of each wastewater pipe passes downward through the evaporation chamber and is equipped with a nozzle. The top ends of the multiple wastewater pipes are connected to a conveying connection pipe, which passes upward through the processing tank. Both the upper and lower ends of the evaporation chamber are connected to a first ventilation pipe. A second ventilation pipe is connected to the upper ring pipe. An air heating and conveying device is provided on one side of the processing tank. Both the first and second ventilation pipes pass through the side wall of the processing tank and are connected to the air heating and conveying device. The bottom end of the processing tank is connected to a discharge port.

[0008] To collect water vapor more effectively, this invention features an improved design where the air inlet is shaped like an upward-facing cone.

[0009] To prevent the separated material from accumulating on the inner bottom wall of the processing tank, making it difficult to collect, the present invention improves upon this invention by setting the inner bottom wall of the processing tank as a downward-facing conical surface.

[0010] To facilitate the connection and installation of the conveying pipe with external devices, this utility model is improved by providing a flange on the conveying pipe.

[0011] To improve the utilization rate of waste heat, this utility model has an improvement in that the spiral conveying pipe is made of a material with strong thermal conductivity.

[0012] To prevent slippage during operation, this invention includes an improvement where a support leg is fixed to the bottom of the processing tank, and the bottom of the support leg is provided with anti-slip texture.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, this utility model provides an energy-saving wastewater evaporator that can recover steam waste heat, and has the following beneficial effects:

[0015] This energy-saving wastewater evaporator with recoverable steam heat achieves rapid and immediate absorption of high-temperature water vapor sprayed downwards from the wastewater pipe through the upper ring pipe, spiral conveying pipe, and lower ring pipe, and under the adsorption effect of the air heating and conveying device. When passing through the bolt conveying pipe, the heat is transferred to the evaporation chamber to increase the temperature, and then transported to the air heating and conveying device through the second ventilation pipe for circulation and heating, thus achieving effective and full utilization of waste heat and reducing heat waste. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the first main view structure of this utility model;

[0017] Figure 2 This is a first partial structural schematic diagram of the present invention in cross-section;

[0018] Figure 3 This is a second partial structural schematic diagram in cross-section of the present invention;

[0019] Figure 4 This is a schematic diagram of the third part of the structure of this utility model.

[0020] In the diagram: 1. Processing tank; 2. Evaporation chamber; 3. Upper ring pipe; 4. Lower ring pipe; 5. Spiral conveyor pipe; 6. Air inlet; 7. Wastewater pipe; 8. Conveying connection pipe; 9. First ventilation pipe; 10. Second ventilation pipe; 11. Air heating and conveying device; 12. Discharge port; 13. Flange; 14. Support leg. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-4 An energy-saving wastewater evaporator capable of recovering steam waste heat includes a treatment tank 1 with an internal cavity. An evaporation chamber 2 is located at the upper part of the internal cavity within the treatment tank 1. A waste heat recovery mechanism is installed on the evaporation chamber 2. The recovery mechanism includes an upper ring pipe 3, a lower ring pipe 4, and four spiral conveying pipes 5 evenly distributed between the upper ring pipe 3 and the lower ring pipe 4. Each spiral conveying pipe 5 communicates with both the upper ring pipe 3 and the lower ring pipe 4. An air inlet 6 is located at the bottom end of the lower ring pipe 4. Both the upper ring pipe 3 and the lower ring pipe 4 are fixed to the outer wall of the evaporation chamber 2. All pipes 4 are fixed to the inner wall of the treatment tank 1. Multiple wastewater pipes 7 are fixed on the evaporation chamber 2. The lower end of each wastewater pipe 7 passes downward through the evaporation chamber 2 and is provided with a nozzle. The top ends of the multiple wastewater pipes 7 are connected to a conveying connection pipe 8. The conveying connection pipe 8 passes upward through the treatment tank 1. The upper and lower ends of the evaporation chamber 2 are both connected to a first ventilation pipe 9. The upper ring pipe 3 is connected to a second ventilation pipe 10. An air heating and conveying device 11 is provided on one side of the treatment tank 1. The first ventilation pipe 9 and the second ventilation pipe 10 both pass through the side wall of the treatment tank 1 and are connected to the air heating and conveying device 11. The bottom end of the treatment tank 1 is connected to a discharge port 12.

[0023] In operation, wastewater is first fed into wastewater pipe 7 via conveying connection pipe 8. The air heating and conveying device 11 is then activated, heating the outside air and conveying it to evaporation chamber 2 via the first ventilation pipe 9 below. This raises the temperature inside evaporation chamber 2, heating the wastewater in wastewater pipe 7 through heat conduction. After heating and separation, the wastewater is ejected from the nozzle below wastewater pipe 7. The separated material falls to the bottom of treatment tank 1 and is discharged through outlet 12. After being heated, the high-temperature water vapor in the wastewater is ejected along with the material. Due to the physical properties of water vapor, it rises upwards. The air heating and conveying device 11 can simultaneously draw in air through the first ventilation pipe 9 and the second ventilation pipe 10 above, thereby enabling the air inlet 6 on the lower ring pipe 4 to absorb high-temperature water vapor instantly and quickly. The vapor then passes through the spiral conveying pipe 5 and the upper ring pipe 3 in sequence before entering the air heating and conveying device 11 for heating and recirculation. At the same time, heat is transferred when passing through the spiral conveying pipe 5, thereby heating the evaporation chamber 2. The high-temperature air discharged from the lower first ventilation pipe 9, after heat transfer, re-enters the air heating and conveying device 11 through the upper first ventilation pipe 9 for circulation.

[0024] In actual use, it was found that water vapor tends to rise and is difficult to collect. To solve the above problem, in this embodiment, the air inlet 6 is set as an upward-facing cone.

[0025] In actual use, it was found that materials tend to accumulate at the bottom of the processing tank 1. To avoid the above problem, in this embodiment, the inner bottom wall of the processing tank 1 is set as a downward conical surface.

[0026] In actual use, it was found that, in order to facilitate the connection and installation of the conveying connection pipe 8 with external devices, in this embodiment, the conveying connection pipe 8 is provided with a flange 13.

[0027] In practical use, it has been found that materials with poor thermal conductivity are prone to heat waste. In order to alleviate the above problems, in this embodiment, the spiral conveying pipe 5 is made of a material with strong thermal conductivity.

[0028] In actual use, it was found that the device is prone to sliding under the action of external force during operation. In order to avoid the above problem, in this embodiment, the bottom end of the processing tank 1 is fixed with a support leg 14, and the bottom end of the support leg 14 is provided with anti-slip texture.

[0029] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0030] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0031] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0032] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wastewater evaporator with recoverable steam waste heat and energy saving, comprising a treatment tank (1), characterized in that: The processing tank (1) has an internal cavity. An evaporation chamber (2) is located at the upper part of the internal cavity. A waste heat recovery mechanism is provided on the evaporation chamber (2). The recovery mechanism includes an upper ring pipe (3), a lower ring pipe (4), and a spiral conveying pipe (5). Four spiral conveying pipes (5) are provided and evenly distributed between the upper ring pipe (3) and the lower ring pipe (4). The spiral conveying pipes (5) are connected to both the upper ring pipe (3) and the lower ring pipe (4). An air inlet (6) is provided at the bottom end of the lower ring pipe (4). The upper ring pipe (3) and the lower ring pipe (4) are both fixed to the outer wall of the evaporation chamber (2) and the inner wall of the processing tank (1). On the evaporation chamber (2), multiple wastewater pipes (7) are fixed. The lower end of the wastewater pipes (7) passes through the evaporation chamber (2) downward and is provided with a nozzle. The top of the multiple wastewater pipes (7) is connected to a conveying connection pipe (8). The conveying connection pipe (8) passes through the treatment tank (1) upward. The upper and lower ends of the evaporation chamber (2) are connected to a first ventilation pipe (9). The upper ring pipe (3) is connected to a second ventilation pipe (10). An air heating and conveying device (11) is provided on one side of the treatment tank (1). The first ventilation pipe (9) and the second ventilation pipe (10) both pass through the side wall of the treatment tank (1) and are connected to the air heating and conveying device (11). The bottom end of the treatment tank (1) is connected to a discharge port (12).

2. The wastewater evaporator with recoverable steam waste heat energy-saving type according to claim 1, characterized in that: The air inlet (6) is configured as an upward-facing conical surface.

3. The waste water evaporator of claim 1, wherein: The inner bottom wall of the processing tank (1) is configured as a downward-facing conical surface.

4. The wastewater evaporator with recoverable steam waste heat energy-saving type according to claim 1, characterized in that: A flange (13) is provided on the conveying connection pipe (8).

5. The waste water evaporator of claim 1, wherein: The spiral conveying pipe (5) is made of a material with strong thermal conductivity.

6. The waste water evaporator of claim 1, wherein: The bottom of the processing tank (1) is fixed with a support leg (14), and the bottom of the support leg (14) is provided with anti-slip texture.

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