A liquid return prevention distillation system
By installing a phase change energy storage tank between the evaporator and the condenser and controlling the solenoid valve, the problem of liquid return during the discharge restart process of the distillation system was solved, achieving rapid start-up and reduced energy consumption, thus improving system efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU ENTHALPY TECH CO LTD
- Filing Date
- 2025-06-16
- Publication Date
- 2026-06-26
AI Technical Summary
The existing distillation system suffers from liquid backflow during the discharge restart process, resulting in slow start-up, high energy consumption, and low efficiency.
A phase change energy storage tank is installed between the evaporator and the condenser. The suction temperature is increased before the compressor is started by controlling the solenoid valve to avoid liquid return. After the evaporator boils, the compressor is started up quickly to store energy.
It enables rapid start-up, reduces energy consumption, and improves the efficiency of the distillation system.
Smart Images
Figure CN224411474U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a backflow prevention distillation system, belonging to the field of waste liquid treatment technology. Background Technology
[0002] In existing waste liquid treatment processes, in order to avoid the environmental harm caused by high-salt waste liquid, it is usually treated by placing it in an evaporator for low-temperature evaporation. However, during the discharge and restart process of conventional distillation systems, there is a backflow phenomenon, which leads to slow start-up, resulting in high energy consumption and low efficiency of the distillation system. Utility Model Content
[0003] The purpose of this invention is to provide a backflow prevention distillation system to solve the above-mentioned problems.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a backflow prevention distillation system, the backflow prevention distillation system comprising:
[0005] An evaporator, comprising an evaporation chamber and a condensation chamber that are interconnected;
[0006] The waste liquid separation assembly includes a compressor, a first coil, a condenser, a second coil, and an evaporator that are connected in sequence through pipelines to form a closed loop. The first coil is disposed in the evaporation chamber, and the second coil is disposed in the condensation chamber.
[0007] The anti-backflow assembly includes a phase change energy storage tank, a first solenoid valve, a second solenoid valve, a third solenoid valve, a first check valve, and a second check valve. The second solenoid valve is disposed between the first coil and the condenser. The phase change energy storage tank is connected between the first coil and the second solenoid valve via the first solenoid valve. The phase change energy storage tank is connected between the second coil and the evaporator via the third solenoid valve. The phase change energy storage tank is connected between the condenser and the second coil via the first check valve. The phase change energy storage tank is connected between the second solenoid valve and the condenser via the second check valve.
[0008] Furthermore, the phase change energy storage tank includes a tank body and a third coil disposed in the tank body. One end of the third coil is connected to the first solenoid valve and the first check valve, respectively, and the other end is connected to the third solenoid valve and the second check valve, respectively.
[0009] Furthermore, a pressure sensor is installed inside the tank.
[0010] Furthermore, the anti-backflow distillation system also includes a cooling fan for cooling the pipeline between the second solenoid valve and the condenser.
[0011] Furthermore, the anti-backflow distillation system also includes a water tank communicating with the condensation chamber, and a fourth coil connected between the condenser and the second coil is provided in the water tank.
[0012] Furthermore, an ejector is provided between the inlet end of the water tank and the condensation chamber, and a first water pump is provided at the outlet end of the water tank. The ejector is connected to the outlet end of the water tank and the first water pump through a second water pump.
[0013] Furthermore, a water level sensor is installed in the evaporation chamber to detect the water level of the waste liquid in the evaporation chamber.
[0014] Furthermore, the anti-backflow distillation system also includes an oil separator disposed between the compressor and the first coil, the oil separator being used to separate the refrigerant and lubricating oil.
[0015] The beneficial effects of this utility model are as follows: By setting a phase change energy storage tank between the evaporator and the condenser, the first and third solenoid valves are opened and the second solenoid valve is closed before the compressor is started. The phase change energy storage tank is in the evaporation section, which increases the suction temperature and avoids liquid return. After the evaporator boils, the second solenoid valve is opened and the first and third solenoid valves are closed. The phase change energy storage tank is in the condensation section. The phase change energy storage tank absorbs heat, which is convenient for storing energy for the next start-up after discharge, thus achieving rapid start-up.
[0016] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of an anti-backflow distillation system according to an embodiment of this application;
[0018] Figure 2 for Figure 1 Refrigerant flow diagram of the anti-return distillation system. Detailed Implementation
[0019] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.
[0020] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., 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 utility model according to the specific circumstances. Furthermore, in this utility model, unless otherwise explicitly specified and limited, "on" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact through an intermediate medium.
[0023] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0024] Please refer to Figures 1 to 2 The anti-backflow distillation system shown in one embodiment of this application includes an evaporator 10, a waste liquid separation component 20, and an anti-backflow component 30. The evaporator 10 includes an evaporation chamber 11 and a condensation chamber 12 that are interconnected. The evaporation chamber 11 is provided with a water inlet 13 and a slag outlet 14 to facilitate the replenishment of waste liquid and the discharge of waste liquid residue.
[0025] The waste liquid separation assembly 20 includes a compressor 21, a first coil 22, a condenser 23, a second coil 24 and an evaporator 25 that are connected in sequence through pipelines to form a closed loop. The first coil 22 is located in the evaporation chamber 11 and the second coil is located in the condensation chamber 12.
[0026] The anti-backflow assembly 30 includes a phase change energy storage tank 31, a first solenoid valve 32, a second solenoid valve 33, a third solenoid valve 24, a first check valve 35, and a second check valve 36. The second solenoid valve 33 is located between the first coil 22 and the condenser 23. The phase change energy storage tank 31 is connected between the first coil 22 and the second solenoid valve 33 through the first solenoid valve 32. The phase change energy storage tank 31 is connected between the second coil 24 and the evaporator 25 through the third solenoid valve 24. The phase change energy storage tank 31 is connected between the condenser 23 and the second coil 24 through the first check valve 35. The phase change energy storage tank 31 is connected between the second solenoid valve 36 and the condenser 23.
[0027] In one embodiment, the phase change energy storage tank 31 includes a tank body and a third coil 37 disposed within the tank body. One end of the third coil is connected to a first solenoid valve 32 and a first check valve 35, respectively, and the other end is connected to a third solenoid valve 24 and a second check valve 36, respectively. The tank body is filled with energy storage fluid. Heat exchange between the refrigerant and the energy storage fluid is achieved through the third coil 37, facilitating the control of the refrigerant temperature to prevent backflow or enable rapid start-up.
[0028] In one embodiment, a pressure sensor is installed inside the tank. By installing the pressure sensor to monitor the pressure inside the tank in real time, timely adjustments can be made to avoid equipment damage.
[0029] In one embodiment, the anti-backflow distillation system further includes a cooling fan for cooling the piping between the second solenoid valve 33 and the condenser 23. By using a cooling fan to cool the refrigerant entering the condenser 23, the energy consumption of the condenser 23 is effectively reduced, and its service life is improved.
[0030] In one embodiment, the anti-backflow distillation system further includes a water tank 26 communicating with the condenser chamber 12, and a fourth coil 27 connected between the condenser 23 and the second coil 24 is provided in the water tank 26. This arrangement facilitates secondary cooling of the distilled water condensed in the condenser chamber 12.
[0031] In one embodiment, an ejector 50 is provided between the inlet end of the water tank 26 and the condensation chamber 12, and a first water pump 70 is provided at the outlet end of the water tank 26. The ejector 50 is connected to the outlet end of the water tank 26 and the first water pump 70 through a second water pump 60. This arrangement facilitates switching the temperature of the output distilled water as needed.
[0032] In one embodiment, a water level sensor 15 is installed inside the evaporation chamber 11. The water level sensor 15 is used to detect the water level of the waste liquid inside the evaporation chamber 11. The water level sensor 15 is located at the bottom of the evaporation chamber 11 and can be understood as being used to detect the lowest water level of the waste liquid inside the evaporation chamber 11, so as to provide staff with timely replenishment of waste liquid or removal of waste liquid residue.
[0033] In one embodiment, the anti-backflow distillation system further includes an oil separator 28 disposed between the compressor 21 and the first coil 22. The oil separator 28 is used to separate the refrigerant and lubricating oil, thereby ensuring the cleanliness of the refrigerant and improving its efficiency.
[0034] This application involves installing a phase change energy storage tank between the evaporator and the condenser. Before the compressor is started, the first and third solenoid valves are opened, and the second solenoid valve is closed. The phase change energy storage tank is in the evaporation section, which increases the suction temperature and avoids liquid return. After the evaporator boils, the second solenoid valve is opened, and the first and third solenoid valves are closed. The phase change energy storage tank is in the condensation section. The phase change energy storage tank absorbs heat, which facilitates energy storage for the next start-up after discharge, enabling rapid start-up.
[0035] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0036] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A liquid return prevention distillation system, characterized by, The backflow prevention distillation system includes: An evaporator, comprising an evaporation chamber and a condensation chamber that are interconnected; The waste liquid separation assembly includes a compressor, a first coil, a condenser, a second coil, and an evaporator that are connected in sequence through pipelines to form a closed loop. The first coil is disposed in the evaporation chamber, and the second coil is disposed in the condensation chamber. The anti-backflow assembly includes a phase change energy storage tank, a first solenoid valve, a second solenoid valve, a third solenoid valve, a first check valve, and a second check valve. The second solenoid valve is disposed between the first coil and the condenser. The phase change energy storage tank is connected between the first coil and the second solenoid valve via the first solenoid valve. The phase change energy storage tank is connected between the second coil and the evaporator via the third solenoid valve. The phase change energy storage tank is connected between the condenser and the second coil via the first check valve. The phase change energy storage tank is connected between the second solenoid valve and the condenser via the second check valve.
2. The liquid return prevention distillation system of claim 1, wherein, The phase change energy storage tank includes a tank body and a third coil disposed in the tank body. One end of the third coil is connected to the first solenoid valve and the first check valve, respectively, and the other end is connected to the third solenoid valve and the second check valve, respectively.
3. The liquid return prevention distillation system of claim 2, wherein, A pressure sensor is installed inside the tank.
4. The liquid return prevention distillation system of claim 1, wherein, The anti-backflow distillation system also includes a cooling fan, which is used to cool the pipeline between the second solenoid valve and the condenser.
5. The anti-backflow distillation system as described in claim 1, characterized in that, The anti-backflow distillation system also includes a water tank communicating with the condensation chamber, and a fourth coil is provided in the water tank between the condenser and the second coil.
6. The anti-backflow distillation system as described in claim 5, characterized in that, An ejector is provided between the inlet end of the water tank and the condensation chamber, and a first water pump is provided at the outlet end of the water tank. The ejector is connected to the outlet end of the water tank and the first water pump through a second water pump.
7. The anti-backflow distillation system as described in claim 1, characterized in that, A water level sensor is installed in the evaporation chamber to detect the water level of the waste liquid in the evaporation chamber.
8. The anti-backflow distillation system as described in claim 1, characterized in that, The anti-return distillation system also includes an oil separator disposed between the compressor and the first coil, the oil separator being used to separate refrigerant and lubricating oil.