Low-temperature evaporation equipment
By introducing a stirring mechanism and a condenser pipe into the low-temperature evaporation equipment, the problem of wastewater stirring is solved and the adhesion of concentrates is improved, the evaporation efficiency and equipment stability are improved, and the wastewater treatment cost is reduced.
Patent Information
- Application Number
- CN202422301420.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-20
AI Technical Summary
The wastewater of traditional low-temperature evaporation equipment is not easy to stir, resulting in low evaporation efficiency, and the evaporated concentrate is easy to adhere to the inner wall of the reactor, affecting the stable operation and cleaning effect of the equipment.
A low-temperature evaporation device is designed, including a distillation kettle body, an upper partition plate, a lower partition plate, a connecting cylinder, a condenser tube, a heat exchanger and a stirring mechanism. The wastewater is stirred through the scraper plate and a twisted dragon of the stirring mechanism, combined with the use of vacuum negative pressure and the use of a condenser tube, to improve the evaporation efficiency and prevent the concentrate from adhesion.
It realizes the extraction of dischargeable distilled water from wastewater, reduces the volume of wastewater, reduces the cost of enterprise processing, and ensures the stable operation and convenient cleaning of equipment.
Smart Images
Figure CN223134161U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of environmental protection equipment, in particular to a low-temperature evaporation device. Background Technique
[0002] The main function of the low-temperature evaporation device is to reduce the boiling point under the action of vacuum negative pressure, so that the original liquid (waste water) boils and evaporates at more than thirty degrees after heating, and the evaporated steam condenses to form liquid water, which is finally discharged from the reaction kettle.
[0003] According to the different specific gravities of the water quality, the maximum concentration reduction and water discharge rate can reach 70-90%; in the aspect of environmental protection waste water treatment, it can greatly reduce the treatment cost of waste liquid for enterprises, and the overall equipment occupies a small area and is relatively easy to use.
[0004] However, when the traditional low-temperature evaporation device is used, the waste water is not easy to stir, resulting in low liquid evaporation efficiency; and the evaporated waste water concentrate is easy to adhere to the inner wall of the reaction kettle, which is not easy to clean and also affects the storage capacity, and the use effect is not ideal. Content of the Utility Model
[0005] The purpose of the utility model is to solve the above problems and provide a low-temperature evaporation device that can extract drainable distilled water from waste water, reduce the overall volume of waste water, save the waste water treatment cost of enterprises, and it is not easy for a large amount of concentrate to adhere to the inside of the device, ensuring the overall stable operation.
[0006] To achieve the above purpose, the technical solution of the utility model is: a low-temperature evaporation device, including a distillation kettle body, the distillation kettle body is provided with a liquid inlet, a liquid outlet, a distillation port and a negative pressure port, the distillation kettle body is internally provided with an upper partition plate and a lower partition plate, the surface of the upper partition plate is provided with a connecting cylinder, the outer circumference of the connecting cylinder is provided with a condensing pipe, the bottom surface of the lower partition plate is provided with a heat exchanger, and a stirring mechanism is arranged between the upper partition plate and the lower partition plate.
[0007] Preferably, the upper partition plate and the distillation kettle body form an evaporation chamber, the condensing pipe is fixed on the outer wall of the connecting cylinder in a spring shape, and the steam in the distillation kettle body enters the evaporation chamber through the upper partition plate and the connecting cylinder.
[0008] Preferably, the liquid inlet is arranged below the upper partition plate, the distillation port is arranged above the upper partition plate, the liquid outlet is arranged above the lower partition plate, and the negative pressure port is arranged between the upper partition plate and the lower partition plate.
[0009] Preferably, the stirring mechanism includes a core shaft, one end of the core shaft is rotatably connected to the lower partition plate, the other end extends vertically upward and protrudes from the top of the distillation kettle body, a pulley is arranged at the top end of the core shaft, and the core shaft, the connecting cylinder and the distillation kettle body are located on the same axis.
[0010] Preferably, the stirring mechanism further includes a plurality of triangular fixing plates, which are respectively fixedly connected to the core shaft. The distance between every two adjacent fixing plates is the same. The three corners of the fixing plate are provided with horizontally extending extension rods, and the ends of the extension rods are provided with scraping disks, and the scraping disks are always in contact with the inner wall of the distillation kettle body.
[0011] Preferably, a screw conveyor for stirring is further provided between every two adjacent fixing plates.
[0012] A low-temperature evaporation device disclosed by the present utility model includes a distillation kettle body, and the distillation kettle body is provided with a liquid inlet, a liquid outlet, a distillation port and a negative pressure port. An upper partition plate and a lower partition plate are arranged in the distillation kettle body. A connecting cylinder is arranged on the surface of the upper partition plate, and a condensing pipe is arranged on the outer circumference of the connecting cylinder. A heat exchanger is arranged on the bottom surface of the lower partition plate, and a stirring mechanism is arranged between the upper partition plate and the lower partition plate; compared with the prior art, when the low-temperature evaporation device is used, it has the beneficial effects of being able to extract drainable distilled water from wastewater, reducing the overall volume of wastewater, saving the enterprise's wastewater treatment cost, and not easily attaching a large amount of concentrates inside the device, ensuring the overall stable operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 is an overall structural schematic diagram of a low-temperature evaporation device of the present utility model.
[0014] Figure 2 is an internal structural schematic Figure 1 .
[0015] Figure 3 is an internal structural schematic Figure 2 .
[0016] Figure 4 is an internal structural schematic Figure 3 .
[0017] In the figure: 1. Distillation kettle body; 11. Liquid inlet; 12. Liquid outlet; 13. Distillation port; 14. Negative pressure port; 2. Upper partition plate; 21. Connecting cylinder; 22. Condensing pipe; 3. Lower partition plate; 31. Heat exchanger; 4. Evaporation chamber; 5. Core shaft; 51. Fixing plate; 52. Extension rod; 53. Scraping disk; 54. Screw conveyor; 55. Pulley. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0018] Now, the present utility model will be further described in detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, which only illustrate the basic structure of the present utility model in a schematic manner, so they only show the components related to the present utility model.
[0019] Please refer to Figures 1-4, A low-temperature evaporation device, including a distillation kettle body 1, on which there are a liquid inlet 11, a liquid outlet 12, a distillation port 13 and a negative pressure port 14. Inside the distillation kettle body 1, there are an upper partition plate 2 and a lower partition plate 3. On the surface of the upper partition plate 2, there is a connecting cylinder 21, and on the outer circumference of the connecting cylinder 21, there is a condensing pipe 22. On the bottom surface of the lower partition plate 3, there is a heat exchanger 31. Between the upper partition plate 2 and the lower partition plate 3, there is a stirring mechanism.
[0020] Among them, the liquid inlet 11 is arranged below the upper partition plate 2, the distillation port 13 is arranged above the upper partition plate 2, the liquid outlet 12 is arranged above the lower partition plate 3, and the negative pressure port 14 is arranged between the upper partition plate 2 and the lower partition plate 3; between the upper partition plate 2 and the distillation kettle body 1, an evaporation chamber 4 is formed. The condensing pipe 22 is fixed on the outer wall of the connecting cylinder 21 in a spring shape. The steam in the distillation kettle body 1 enters the evaporation chamber 4 through the upper partition plate 2 and the connecting cylinder 21.
[0021] During use, wastewater is injected into the distillation kettle body 1 at the liquid inlet 11. That is to say, the wastewater finally enters between the lower partition plate 3 and the upper partition plate 2. Then, an external vacuum pump extracts the air in the distillation kettle body 1 at the negative pressure port 14, making the inside of the distillation kettle body 1 form a negative pressure, so as to lower the boiling point of the wastewater, and the water can boil at 35 - 45 °C.
[0022] In this embodiment, when extracting air to form negative pressure, the liquid inlet 11, the liquid outlet 12 and the distillation port 13 are sealed by valves.
[0023] When the temperature of the heat exchanger 31 rises after operation, the temperature of the wastewater on the lower partition plate 3 gradually rises through heat transfer. When the temperature reaches the boiling point of the wastewater, the steam will rise. At this time, the whole will enter the evaporation chamber 4 through the upper partition plate 2 and the connecting cylinder 21; when the steam contacts the condensing pipe 22, water droplets will be formed. These condensed water droplets gather on the upper partition plate 2 and finally are discharged at the distillation port 13.
[0024] In this embodiment, the operation of the stirring device is to stir the wastewater and improve the evaporation efficiency of the wastewater.
[0025] When the wastewater cannot be evaporated (in a paste state), it is discharged from the distillation kettle body at the liquid outlet 12.
[0026] That is to say, after the wastewater enters the distillation kettle body 1, distilled water meeting the discharge standard can be extracted from the wastewater, and the distilled water can be directly discharged; the remaining concentrate is discharged to the treatment plant for treatment, which can greatly reduce the wastewater treatment cost of the enterprise.
[0027] Specifically, the stirring mechanism includes a core shaft 5. One end of the core shaft 5 is rotatably connected to the lower partition plate 3, and the other end extends vertically upward out of the top of the distillation kettle body 1. A pulley 55 is provided at the top end of the core shaft 5, which is connected to an external motor and belt drive. The core shaft 5, the connecting cylinder 21, and the distillation kettle body 1 are located on the same axis.
[0028] The stirring mechanism further includes a plurality of triangular fixing plates 51, which are respectively fixedly connected to the core shaft 5. The distance between every two adjacent fixing plates 51 is the same. Horizontal extension rods 52 are provided at the three corners of the fixing plate 51, and scraping plates 53 are provided at the ends of the extension rods 52. The scraping plates 53 are always in contact with the inner wall of the distillation kettle body 1.
[0029] When the core shaft 5 rotates, the fixing plates 51, the extension rods 52, and the scraping plates 53 rotate therewith. Since the scraping plates 53 are in contact with the inner wall of the distillation kettle body 1, the scraping plates 53 can scrape off a large amount of the concentrate adhering to the inner wall of the distillation kettle body 1, avoiding a large amount of the concentrate adhering to the inner wall of the distillation kettle body.
[0030] As a preferred solution, an auger 54 for stirring is further provided between every two adjacent fixing plates 51. When the core shaft 5 rotates, the auger 54 also rotates therewith, so as to stir the wastewater, further evaporate the wastewater, and reduce the volume of the concentrate.
[0031] In this embodiment, the heat exchanger 31 can also be a traditional heater, such as an electric heating wire, etc., as long as it can heat the wastewater to boiling; the inside of the condenser tube 22 is circulating cooling water. When the high-temperature steam contacts the condenser tube 22, it is easier to precipitate distilled water, which is convenient for its collection.
[0032] Obviously, the above embodiments are only examples given for clear illustration, and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.
Claims
1. A low-temperature evaporation device, comprising a distillation kettle body, wherein a liquid inlet, a liquid outlet, a distillation port and a negative pressure port are arranged on the distillation kettle body, and it is characterized in that, Inside the distillation kettle body, there are upper and lower partition plates. A connecting cylinder is provided on the surface of the upper partition plate. A condensing pipe is provided on the outer circumference of the connecting cylinder. A heat exchanger is provided on the bottom surface of the lower partition plate. A stirring mechanism is provided between the upper and lower partition plates.
2. The low-temperature evaporation device according to claim 1, wherein The upper partition plate and the distillation kettle body form an evaporation chamber. The condensing pipe is fixed in a spring shape on the outer wall of the connecting cylinder. The steam in the distillation kettle body enters the evaporation chamber through the upper partition plate and the connecting cylinder.
3. The low-temperature evaporation device according to claim 2, characterized in that, The liquid inlet is provided below the upper partition plate. The distillation outlet is provided above the upper partition plate. The liquid outlet is provided above the lower partition plate. The negative pressure port is provided between the upper and lower partition plates.
4. The low-temperature evaporation device according to any one of claims 1-3, characterized in that, The stirring mechanism includes a core shaft. One end of the core shaft is rotatably connected to the lower partition plate, and the other end extends vertically upward and extends out of the top of the distillation kettle body. A pulley is provided at the top end of the core shaft. The core shaft, the connecting cylinder, and the distillation kettle body are located on the same axis.
5. The low-temperature evaporation device according to claim 4, characterized in that, The stirring mechanism further includes a plurality of triangular fixing plates. The plurality of fixing plates are respectively fixedly connected to the core shaft. The distance between each adjacent two fixing plates is the same. Horizontal extension rods are provided at the three corners of the fixing plate. Scraping plates are provided at the ends of the extension rods. The scraping plates are always in contact with the inner wall of the distillation kettle body.
6. The low-temperature evaporation device according to claim 5, wherein, A screw conveyor for stirring is further provided between each adjacent two of the fixing plates.