Low-temperature evaporator

Abstract

The utility model discloses a low-temperature evaporator, and belongs to the technical field of evaporation. The device mainly comprises a frame body; the heating tank is mounted at the upper end of the frame body; the condensation tank is mounted on one side, far away from the heating tank, of the frame body; the cooling unit is arranged between the condensation tank and the heating tank; the circulating assembly is installed at the lower end of the heating tank and comprises a discharging port, a discharging port, a circulating assembly and a heating assembly, and the discharging port is installed at the lower end of the heating tank; the discharging pipeline is mounted at one end of the discharging opening; the circulating pump is mounted at one end, far away from the discharging pipeline, of the discharging opening; the circulating pipeline is mounted at the output end of the circulating pump; and the spray head is arranged on the circulating pipeline. According to the low-temperature evaporator, by arranging the circulating assembly, the effect that unqualified sewage can be circularly treated again when treated sewage is discharged is achieved.

Description

Technical Field

[0001] The present application relates to the field of evaporation technology, and in particular to a low-temperature evaporator. Background Art

[0002] The low-temperature evaporator uses low-temperature vacuum evaporation technology to evaporate the water or other volatile components in the liquid through the synergistic effect of the refrigeration system, vacuum system and evaporation system, thereby obtaining a high-concentration liquid.

[0003] In the field of sewage treatment, low-temperature evaporators are used to concentrate sewage. The low-temperature evaporator heats the wastewater to below its boiling point, causing the water in the wastewater to evaporate, while the solutes and impurities are concentrated in the wastewater. The evaporated water vapor is further condensed into water and can be recycled, thereby achieving wastewater treatment and resource recovery.

[0004] For example, patent publication number CN215403195U discloses a low-temperature evaporator. This patent uses a heating coil in the evaporation tank, and the water outlet of the cooling unit and the outlet end of the exhaust pipe are connected to the cooler. The outlet end of the cooler and the water inlet of the cooling unit are connected in sequence by a water tank, a vacuum circulation pump and an ejector. This ensures that the evaporation tank is always maintained in a high vacuum state when the sewage is concentrated. The heat generated by the cooling unit during operation can make the sewage boil, without the need for additional energy.

[0005] When discharging treated sewage, unqualified sewage treatment may occur. However, during the implementation of the above-mentioned patent, the treated sewage is directly discharged from the discharge port to the next process under the action of high-pressure air. Unqualified sewage treatment may affect the next process.

[0006] Therefore, it is necessary to provide a low-temperature evaporator to solve the above problems.

[0007] It should be noted that the above information disclosed in this Background section is only for understanding the background technology of the present application concept, and therefore, it may contain information that does not constitute the prior art. Summary of the Invention

[0008] Based on the above problems existing in the prior art, the problem to be solved by this application is: to provide a low-temperature evaporator to solve the problem of unqualified sewage treatment when discharging treated sewage, thereby affecting the next process.

[0009] The technical solution adopted by the present application to solve the technical problem is: a low-temperature evaporator, comprising:

[0010] frame;

[0011] A heating tank is mounted on the upper end of the frame;

[0012] a condensing tank, which is mounted on a side of the frame away from the heating tank;

[0013] A cooling unit is installed between the condensing tank and the heating tank, and is used to compress and circulate the refrigerant to facilitate the transfer and utilization of heat energy;

[0014] A circulation assembly is installed at the lower end of the heating tank, and the circulation assembly includes:

[0015] A discharge port is installed at the lower end of the heating tank;

[0016] a discharge pipe, the discharge pipe being installed at one end of the discharge port;

[0017] a circulation pump, the circulation pump being installed at an end of the discharge port away from the discharge pipe;

[0018] a circulation pipe installed at an output end of the circulation pump;

[0019] A nozzle is installed on the circulation pipe.

[0020] Furthermore, a feed port is fixedly provided on the heating tank, a steam port is fixedly provided on the upper end of the heating tank, and a steam pipe is fixedly provided on the steam port;

[0021] A defoaming filter is fixedly provided at the top end of the heating tank, which is located at the lower end of the steam pipe.

[0022] Furthermore, the cooling unit includes a compressor between the condensing tank and the heating tank, the output end of the compressor passes through the heating tank, the output end of the compressor is fixedly connected to a heating pipe, the heating pipes are circumferentially distributed inside the heating tank, one end of the heating pipe passes through the heating tank, extends to the outside and is fixedly connected to a condenser, and the end of the condenser away from the heating pipe is fixedly provided with a cooling pipe, and the cooling pipe passes through the condensing tank and extends to the inside of the condensing tank;

[0023] The cooling pipes are circumferentially distributed inside the condensation tank. The cooling pipes extend downward to the lower end of the condensation tank and penetrate the condensation tank to be fixedly connected to the input end of the compressor.

[0024] Furthermore, a drain outlet is fixedly provided at the lower end of the condensation tank, and a water tank is fixedly provided at one side of the lower end of the condensation tank.

[0025] Furthermore, a valve is fixedly provided on the discharge pipe.

[0026] The beneficial effect of the present application is that the low-temperature evaporator provided by the present application, by setting a circulation component, can achieve the effect of recycling unqualified sewage again when discharging treated sewage.

[0027] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings in the specification, which constitute a part of this application, are used to provide further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute improper limitations on this application.

[0029] In the attached figure:

[0030] Figure 1 This is an overall schematic diagram of a low-temperature evaporator in this application;

[0031] Figure 2 A cross-sectional schematic diagram of a low-temperature evaporator in this application;

[0032] Figure 3 for Figure 2 Schematic diagram of the intermediate cooling unit;

[0033] Figure 4 for Figure 2 Schematic diagram of the mesocycle components;

[0034] Among them, the reference numerals in the figures are:

[0035] 1. Frame; 2. Heating tank; 3. Feed inlet; 4. Condensation tank; 5. Drain outlet; 6. Cooling unit; 60. Heating pipe; 61. Condenser; 62. Cooling pipe; 63. Compressor; 7. Water tank; 8. Steam pipe; 9. Circulation component; 90. Discharge port; 91. Discharge pipe; 92. Circulation pump; 93. Circulation pipe; 94. Valve; 95. Nozzle; 10. Defoaming filter. DETAILED DESCRIPTION

[0036] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0037] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0038] like Figure 1-Figure 3 As shown, the present application provides a low-temperature evaporator, comprising a frame 1, and a heating tank 2 fixedly arranged at the upper end of the frame 1, the heating tank 2 being used to store and heat the waste liquid to be evaporated, and a feed port 3 fixedly arranged on the heating tank 2, the feed port 3 being used to introduce the waste liquid to be treated into the interior of the heating tank 2;

[0039] A condensation tank 4 is fixedly provided on the side of the frame 1 away from the heating tank 2, and the condensation tank 4 is used to receive and cool the water vapor generated during the evaporation process;

[0040] At the same time, a steam port (not shown in the figure) is fixedly provided at the upper end of the heating tank 2, and a steam pipe 8 is fixedly provided on the steam port. The steam pipe 8 is used to transport the water vapor generated in the heating tank 2 to the condensation tank 4 for condensation treatment. The steam pipe 8 is connected to the condensation tank 4;

[0041] At the same time, a cooling unit 6 is fixedly provided between the condensing tank 4 and the heating tank 2. The cooling unit 6 is used to compress and circulate the refrigerant to facilitate the transfer and utilization of heat energy.

[0042] The cooling unit 6 includes a compressor 63 fixedly arranged between the condensing tank 4 and the heating tank 2. The compressor 63 compresses the low-temperature refrigerant into a high-temperature refrigerant. At the same time, the output end of the compressor 63 passes through the heating tank 2 and extends into the interior of the heating tank 2. A heating pipe 60 is fixedly connected to the output end of the compressor 63. The heating pipe 60 is used to transfer heat energy to the waste liquid inside the heating tank 2, so that the water in the waste liquid evaporates;

[0043] The heating tube 60 is circumferentially distributed inside the heating tank 2 and extends upward to the upper end of the heating tank 2. At the same time, one end of the heating tube 60 passes through the heating tank 2 and extends to the outside of the heating tank 2. A condenser 61 is fixedly connected to the heating tube 60. The condenser 61 is used to condense the medium in the heating tube 60. A cooling tube 62 is fixedly provided at one end of the condenser 61 away from the heating tube 60. The cooling tube 62 passes through the condensation tank 4 and extends to the inside of the condensation tank 4. The cooling tube 62 is used to exchange heat with the water vapor in the condensation tank 4.

[0044] The cooling pipe 62 is circumferentially distributed inside the condenser tank 4 and extends downward to the lower end of the condenser tank 4 and penetrates the condenser tank 4. The cooling pipe 62 is fixedly connected to the input end of the compressor 63.

[0045] It should be noted that before the heating stage begins, the wastewater first enters the heating tank 2 through the feed port 3, and then the compressor 63 runs to compress the refrigerant to generate heat, which heats the wastewater in the heating tank 2 through the heating pipe 60 until the wastewater temperature gradually rises to the set temperature, at which time the wastewater begins to evaporate;

[0046] Then, the evaporated water vapor rises until it reaches the upper end of the heating tank 2. At the same time, in order to prevent the waste water from generating bubbles during the evaporation process, a defoaming filter 10 is fixedly installed at the lower end of the steam pipe 8 at the top end of the heating tank 2. The defoaming filter 10 is used to prevent the heating tank 2 from generating foam during the heating process. After the water vapor is filtered by the defoaming filter 10, it enters the condensing tank 4 through the steam pipe 8 at the upper end of the heating tank 2.

[0047] At the same time, the refrigerant enters the condenser 61 through the heating pipe 60. After the refrigerant undergoes heat exchange in the condenser 61, it enters the cooling pipe 62. At this time, the refrigerant inside the cooling pipe 62 exchanges heat with the water vapor inside the condenser tank 4, causing the water vapor to lose heat and condense into water. After absorbing the heat, the refrigerant enters the compressor 63 through the lower end of the cooling pipe 62 for compression and heating, continuously heating the wastewater, thus forming an evaporation cycle.

[0048] A drain port 5 is fixedly provided at the lower end of the condensation tank 4, and the drain port 5 is used to discharge the distilled water vapor out of the condensation tank 4. At the same time, a water tank 7 is fixedly provided on one side of the lower end of the condensation tank 4, and the water tank 7 is used to temporarily store the distilled water discharged from the condensation tank 4;

[0049] In order to prevent the situation where unqualified sewage is directly discharged into the next process, thereby affecting the next process, such as Figure 1 and Figure 4 As shown, a circulation component 9 is fixedly provided at the lower end of the heating tank 2. The circulation component 9 includes a discharge port 90 fixedly provided at the lower end of the heating tank 2. A discharge pipe 91 is fixedly provided at one end of the discharge port 90. A valve 94 is fixedly provided on the discharge pipe 91. The valve 94 is used to control the discharge of the concentrated liquid inside the heating tank 2.

[0050] At the same time, a circulation pump 92 is fixedly provided at one end of the discharge port 90 away from the discharge pipe 91, and a circulation pipe 93 is fixedly provided at the output end of the circulation pump 92. The circulation pipe 93 passes through the heating tank 2 and extends to the interior and is fixedly provided with a nozzle 95;

[0051] When valve 94 is opened, the concentrated liquid inside the heating tank 2 is discharged from the discharge pipe 91. When a certain amount of concentrated liquid is discharged, valve 94 is closed. At this time, the discharged concentrated liquid is manually inspected. If the inspection is qualified, valve 94 is opened to continue discharge. If it is found that the concentrated liquid treatment is unqualified, the circulation pump 92 can be turned on to spray the concentrated liquid into the heating tank 2 through the circulation pipe 93 using the nozzle 95 for secondary treatment until the concentrated liquid treatment is qualified and then discharged through the discharge pipe 91.

[0052] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A low-temperature evaporator, characterized in that: include: Frame (1); A heating tank (2), the heating tank (2) being mounted on the upper end of the frame (1); a condensation tank (4), the condensation tank (4) being mounted on a side of the frame (1) away from the heating tank (2); A cooling unit (6) is installed between the condensing tank (4) and the heating tank (2), and the cooling unit (6) is used to compress and circulate the refrigerant to facilitate the transfer and utilization of heat energy; A circulation assembly (9) is installed at the lower end of the heating tank (2), and the circulation assembly (9) includes: a discharge port (90), the discharge port (90) being installed at the lower end of the heating tank (2); a discharge pipe (91), the discharge pipe (91) being installed at one end of the discharge port (90); a circulation pump (92), the circulation pump (92) being installed at one end of the discharge port (90) away from the discharge pipe (91); A circulation pipe (93), which is installed at the output end of the circulation pump (92); A nozzle (95) is installed on the circulation pipe (93).

2. A low-temperature evaporator according to claim 1, characterized in that: A feed port (3) is fixedly provided on the heating tank (2), a steam port is fixedly provided on the upper end of the heating tank (2), and a steam pipe (8) is fixedly provided on the steam port; A defoaming filter (10) is fixedly provided at the top end of the interior of the heating tank (2) at a position located at the lower end of the steam pipe (8).

3. A low-temperature evaporator according to claim 1, characterized in that: The cooling unit (6) includes a compressor (63) between the condensing tank (4) and the heating tank (2), the output end of the compressor (63) passes through the heating tank (2), the output end of the compressor (63) is fixedly connected to a heating pipe (60), the heating pipe (60) is circumferentially distributed inside the heating tank (2), one end of the heating pipe (60) passes through the heating tank (2) and extends to the outside and is fixedly connected to a condenser (61), the end of the condenser (61) away from the heating pipe (60) is fixedly provided with a cooling pipe (62), and the cooling pipe (62) passes through the condensing tank (4) and extends to the inside of the condensing tank (4); The cooling pipe (62) is circumferentially distributed inside the condensation tank (4), and the cooling pipe (62) extends downward to the lower end of the condensation tank (4) and passes through the condensation tank (4) to be fixedly connected to the input end of the compressor (63).

4. A low-temperature evaporator according to claim 1, characterized in that: A drain outlet (5) is fixedly provided at the lower end of the condensation tank (4), and a water tank (7) is fixedly provided at one side of the lower end of the condensation tank (4).

5. The low-temperature evaporator according to claim 1, characterized in that: A valve (94) is fixedly provided on the discharge pipe (91).

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