Reduced pressure distillation water treatment device

Abstract

The invention relates to the technical field of reduced pressure distillation, and discloses a reduced pressure distillation water treatment device which comprises a frame used for providing support, a lower-layer bed board is fixed to the bottom of the frame, and an upper-layer bed board is fixed to the middle of the frame. The upper layer bed board divides the interior of the frame into an upper cavity located above the upper layer bed board and a lower cavity located below the upper layer bed board. The ground trundles are symmetrically fixed at the bottom end of the frame; the wastewater stock solution inlet end is fixed at the front part of the lower layer bed board; the water tank is fixed at the upper end of the upper-layer bed board; the distillation spraying assembly is fixed on the upper layer bed board; a negative pressure assembly; the concentrated waste liquid outlet end is fixed at the front part of the lower layer bed board; and a reclaimed water outlet end. According to the invention, the wastewater stock solution can be continuously and automatically treated, the treatment efficiency is high, and reclaimed water and concentrated waste liquid generated by treatment can be respectively collected, so that subsequent use is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of vacuum distillation, and particularly to a vacuum distillation water treatment device. Background Art

[0002] The wastewater and waste liquid generated during industrial production contain industrial production materials, intermediate products, by-products, and pollutants generated during the production process that are lost with water, and need to be purified and disposed of before being discharged. The boiling point of a liquid refers to the temperature at which its vapor pressure is equal to the external pressure. Therefore, the boiling point of a liquid changes with the change of the external pressure. If vacuum is pumped to increase the vacuum degree to reduce the system pressure, the boiling point of the liquid can be reduced, which is the theoretical basis for vacuum distillation operation. Vacuum distillation is one of the common methods for separating and purifying organic compounds. By using the boiling point difference between water and organic compounds in the solution, organic compounds can be purified, and at the same time, the water in the solution can be recovered and reused.

[0003] In vacuum distillation, after the water in the solution boils, it changes from a liquid state to a gaseous state. It needs to be condensed into a liquid state to complete the vacuum distillation. The existing vacuum distillation water treatment devices mainly have the following problems in use:

[0004] (1) It is difficult to continuously and uninterruptedly automatically treat the original wastewater, the automation degree of the device is not high enough, and the regenerated water and concentrated waste liquid generated during the treatment are not convenient to collect and utilize;

[0005] (2) It is difficult to stably maintain the negative pressure in the distillation tank of the vacuum distillation water treatment device, resulting in poor distillation effect, and the condensation heat transfer rate is low, resulting in a long vacuum distillation time and high production cost;

[0006] (3) The temperature of the heating tube in the distillation tank is not easy to control. When the temperature in the distillation tank is too high, the organic chemical substances in the waste liquid will react and mix with the distilled water, reducing the treatment quality;

[0007] (4) The condensed water easily generated on the outer wall of the water storage tank in the device slides onto the internal components of the device, accelerating the damage and aging of the normal operation of the device. Summary of the Invention

[0008] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a vacuum distillation water treatment device that can continuously and uninterruptedly automatically treat the original wastewater with high treatment efficiency, and can separately collect the regenerated water and concentrated waste liquid generated during the treatment for subsequent use. The distillation effect of the device is good, stable and reliable, the wastewater treatment quality is high, the condensation heat transfer rate is fast, the vacuum distillation time can be compressed, and the production cost can be reduced.

[0009] The present invention is implemented by the following technical solutions: A vacuum distillation water treatment device includes a frame, which is used to provide support. A lower layer floor board is fixed at the bottom of the frame, and an upper layer floor board is fixed in the middle of the frame. The upper layer floor board divides the interior of the frame into an upper chamber above the upper layer floor board and a lower chamber below the upper layer floor board. A cover plate is arranged on the outer side of the frame, and the cover plate at the front of the lower chamber is a grid plate; Floor wheels, there are multiple floor wheels, which are symmetrically fixed at the bottom end of the frame and are used to move and support the frame and its internal structure; Wastewater stock solution inlet end, the wastewater stock solution inlet end is fixed at the front of the lower layer floor board, and the wastewater stock solution flows in from the wastewater stock solution inlet end for subsequent treatment; Water tank, the water tank is fixed at the upper end of the upper layer floor board, and the water tank is used to store the regenerated water obtained by distillation; Distillation spraying assembly, the distillation spraying assembly is fixed on the upper layer floor board, and the distillation spraying assembly is used to distill the wastewater stock solution; Negative pressure assembly, the negative pressure assembly is used to provide negative pressure for the distillation spraying assembly to improve the distillation effect; Concentrated waste liquid outlet end, the concentrated waste liquid outlet end is fixed at the front of the lower layer floor board, and the concentrated waste liquid obtained after the treatment of the wastewater stock solution is discharged from the concentrated waste liquid outlet end; And regenerated water outlet end, the regenerated water outlet end is also fixed at the front of the lower layer floor board, and the regenerated water obtained after the treatment of the wastewater stock solution is discharged from the regenerated water outlet end.

[0010] Preferably, the distillation spraying assembly includes a distillation tank, the bottom of the distillation tank is fixed on the upper deck plate, a lower interface of the distillation tank is communicated with the lower part of the distillation tank, and a pipeline is connected between the lower interface of the distillation tank and the inlet end of the waste liquid stock solution. The waste liquid stock solution flows into the inner side of the lower part of the distillation tank from the lower interface of the distillation tank, and the distillation tank heats the waste liquid stock solution; a main spraying tank pipe, the upper part and the lower part of the main spraying tank pipe are communicated through an air pipe, the bottom end of the main spraying tank pipe is vertically fixed at the top end of a spraying tank support, the bottom end of the spraying tank support is vertically supported on the upper deck plate, and the upper part of the main spraying tank pipe and the upper part of the distillation tank are communicated through a connecting pipeline; a top interface of the spraying tank is arranged at the top of the main spraying tank pipe, a pipeline is connected between the top interface of the spraying tank and a water suction head, the water suction head is located at the inner bottom end of the water tank, and a ball valve and a digital flow switch are further installed on the pipeline between the top interface of the spraying tank and the water suction head. Under the action of negative pressure in the main spraying tank pipe, the water suction head is used to suck the recycled water from the water tank to spray and cool and liquefy the water vapor in the main spraying tank pipe; a drainage diaphragm pump, the drainage diaphragm pump is fixed at the upper end of the lower deck plate, a bottom interface of the distillation tank is arranged at the bottom end of the distillation tank, the bottom interface of the distillation tank is communicated with the inlet of the drainage diaphragm pump through a pipeline, and the outlet of the drainage diaphragm pump is communicated with the outlet end of the concentrated waste liquid through a pipeline; a plurality of bottom interfaces of the main spraying tank pipe communicated with the inside thereof are arranged on the outer side of the bottom of the main spraying tank pipe, and the bottom interfaces of the main spraying tank pipe extend into the water tank through pipelines; an upper interface of the distillation tank communicated with the inside thereof is further arranged on the outer side of the upper part of the distillation tank, and a pneumatic ball valve is installed on the upper interface of the distillation tank; a Y-type filter is further arranged on the pipeline between the bottom interface of the distillation tank and the inlet of the drainage diaphragm pump.

[0011] Preferably, the negative pressure assembly includes a water injector, the water injector has two liquid inlet ends and one liquid outlet end, a first side liquid inlet end of the water injector is connected with the bottom interface of the main spraying tank pipe through a pipeline, and the bottom liquid outlet end of the water injector vertically faces the inside of the water tank; a three-way joint, a first top end of the three-way joint is connected with a pressure gauge, a second bottom end of the three-way joint is communicated with a second top end of the water injector, and a third side end of the three-way joint is connected with a cold water pipeline; and a water injector fixing plate, the water injector is vertically fixed at the side end of the water injector fixing plate, and the water injector fixing plate is fixed in the upper chamber for supporting the water injector; the cold water pipeline is communicated with a cold water conveying device, and the cold water conveying device is used to convey a high-speed cold water flow into the cold water pipeline, so that the hot water and steam flowing from the bottom interface of the main spraying tank pipe into the water injector are mixed with the cold water flow, the hot water and steam are cooled, and a certain negative pressure is formed in the water injector and the main spraying tank pipe and the distillation tank communicated therewith to assist the distillation effect.

[0012] Preferably, the cold water delivery device includes a water pump, which is fixed to the upper end of the upper deck plate through a pump base. The water pump is located beside the water tank. The water inlet end of the water pump is communicated with the bottom of the water tank through a pipeline, and the water outlet end of the water pump is communicated with the input end of the cooling unit through a pipeline. The cooling unit cools the input liquid, and the output end of the cooling unit is connected to the cold water pipeline to deliver cold water flow through the cold water pipeline.

[0013] Preferably, the cooling unit includes a bottom plate, a first condenser, a refrigeration compressor, a liquid storage bottle and a plate heat exchanger. The bottom plate is fixed to the top end of the lower deck plate for supporting the cooling unit. The plate heat exchanger is fixed to the upper end of the bottom plate through a plate heat exchanger support. The hot liquid inlet of the plate heat exchanger is connected to the water outlet end of the water pump through a pipeline, and the cold liquid outlet of the plate heat exchanger is communicated with the cold water pipeline. The first condenser, the refrigeration compressor and the liquid storage bottle are all fixed to the upper end of the bottom plate, and a refrigerant for the refrigeration compressor is stored in the liquid storage bottle. The refrigerant outlet of the plate heat exchanger is communicated with the side inlet of the refrigeration compressor through a pipeline, and the refrigerant inlet of the plate heat exchanger is communicated with the top outlet end of the liquid storage bottle through a pipeline. The side inlet end of the liquid storage bottle is communicated with the outlet end of the first condenser, and the side outlet of the refrigeration compressor is communicated with the inlet end of the first condenser. A drying filter, a first solenoid valve and an expansion valve are sequentially arranged on the pipeline between the top outlet end of the liquid storage bottle and the refrigerant inlet of the plate heat exchanger. The refrigeration compressor and the first condenser cooperate to do work on the refrigerant stored in the liquid storage bottle, so that the refrigerant circulates in the plate heat exchanger to cool the flowing hot water in the plate heat exchanger and turn it into flowing cold water.

[0014] Preferably, the cooling unit further includes a second condenser, which is also fixed to the upper end of the bottom plate. The side inlet end of the liquid storage bottle is also communicated with the outlet end of the second condenser through a pipeline, and the side outlet of the refrigeration compressor is also communicated with the inlet end of the second condenser through a pipeline. A second solenoid valve is also arranged at the inlet end of the second condenser.

[0015] Preferably, an outer ring heating pipe and an inner ring heating pipe are arranged at the bottom inside the distillation tank. The outer ring heating pipe is located outside the inner ring heating pipe. Both the outer ring heating pipe and the inner ring heating pipe are spiral hollow pipes. The first end of the outer ring heating pipe is communicated with the side outlet of the refrigeration compressor through a heating pipe outlet pipe, and the first end of the inner ring heating pipe is communicated with the inlet end of the first condenser through a heating pipe inlet pipe. The second end of the outer ring heating pipe is communicated with the second end of the inner ring heating pipe. The refrigeration compressor and the first condenser cooperate to do work on the refrigerant stored in the liquid storage bottle, so that the refrigerant circulates in the outer ring heating pipe and the inner ring heating pipe to cool the outer ring heating pipe and the inner ring heating pipe with too high temperature.

[0016] Preferably, an impact prevention plate is provided at the end corner of the water tank. There is a gap between the bottom of the impact prevention plate and the bottom end of the water tank. A triangular cavity is separated at the end corner of the impact prevention plate and the water tank, and a float level sensor is installed in the triangular cavity.

[0017] Preferably, a water receiving tray is provided at the bottom of the water tank. The bottom of the water receiving tray is communicated with the top of the condensate liquid collecting tank through a hose. The condensate liquid collecting tank is fixed at the upper end of the lower layer of the floor. The condensate water generated outside the water tank slides down along the outer side wall of the water tank into the water receiving tray, and then flows into the condensate liquid collecting tank along the hose for storage.

[0018] Preferably, a first pneumatic diaphragm pump is further fixed at the upper end of the upper layer of the floor. The liquid outlet end of the first pneumatic diaphragm pump is communicated with the regenerated water outlet end through a pipeline. The liquid inlet end of the first pneumatic diaphragm pump is communicated with the upper end of the water tank through a pipeline. The first pneumatic diaphragm pump is used to discharge the regenerated water stored in the water tank from the regenerated water outlet end.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] (1) For the vacuum distillation water treatment device of the present invention, the waste water stock solution flows into the inner side of the lower part of the distillation tank from the lower interface of the distillation tank. The waste water stock solution is heated by the distillation tank. The water in the waste water stock solution is heated and evaporated. The water vapor flows from the upper part of the distillation tank into the main pipe of the spray tank through the connecting pipe. Under the action of the negative pressure in the main pipe of the spray tank, the water suction head sucks the regenerated water from the water tank to spray and cool and liquefy the water vapor, so that it is converted into a liquid and flows from the bottom interface of the main pipe of the spray tank into the water tank to be recycled, and is discharged from the regenerated water outlet end. Therefore, continuous and uninterrupted automatic treatment of the waste water stock solution can be realized, the treatment efficiency is high, and the regenerated water and concentrated waste liquid generated by the treatment can be respectively collected, which is convenient for centralized subsequent use.

[0021] (2) For the vacuum distillation water treatment device of the present invention, it is communicated with the cold water conveying equipment through the cold water pipeline. The input liquid is cooled by the cooling unit. The refrigeration compressor in the cooling unit cooperates with the first condenser to do work on the refrigerant stored in the liquid storage bottle, so that the refrigerant circulates in the plate heat exchanger and cools the flowing hot water in the plate heat exchanger to make it become flowing cold water. The condensation heat exchange rate is fast, the time of vacuum distillation can be compressed, the production cost can be reduced, and the reliability of heat dissipation and cooling can be improved through the setting of one main condenser and one standby condenser.

[0022] (3) In the vacuum distillation water treatment device of the present invention, during the distillation process, the negative pressure component provides negative pressure to the distillation spraying component. The high-speed cold water flow is conveyed into the cold water pipe by the cold water conveying device, so that the hot water and steam flowing from the bottom interface of the main pipe of the spraying tank into the water injector are combined with the cold water flow, cooling the hot water and steam, and forming a certain continuous and stable negative pressure in the water injector, the main pipe of the spraying tank connected thereto, and the distillation tank, which can improve the distillation effect.

[0023] (4) In the vacuum distillation water treatment device of the present invention, the refrigerant circulates in the outer heating pipe and the inner heating pipe, which can cool the outer heating pipe and the inner heating pipe with too high temperature, assist in controlling the temperature in the distillation tank, avoid the reaction of organic chemical substances in the waste liquid due to too high temperature in the distillation tank, and improve the quality of wastewater treatment.

[0024] (5) During the use of the vacuum distillation water treatment device of the present invention, the condensed water generated outside the water tank can flow into the condensed water collecting tank for storage and collection, thereby protecting the normal operation of the device. Brief Description of the Drawings

[0025] Figure 1 is the overall structural schematic diagram of the vacuum distillation water treatment device of the present invention;

[0026] Figure 2 is the three-dimensional structural schematic diagram after removing the cover plate of the present invention Figure 1 ;

[0027] Figure 3 is the front view after removing the cover plate of the present invention;

[0028] Figure 4 is the three-dimensional structural schematic diagram after removing the cover plate of the present invention Figure 2 ;

[0029] Figure 5 is the structural schematic diagram of the distillation spraying component in the present invention;

[0030] Figure 6 is the structural schematic diagram of the main pipe of the spraying tank sucking water from the water tank in the present invention;

[0031] Figure 7 is the three-dimensional structural schematic diagram after removing the cover plate and the frame of the present invention Figure 1 ;

[0032] Figure 8 is the connection structural schematic diagram of the water pump, the water tank and the main pipe of the spraying tank in the present invention;

[0033] Figure 9 is the structural schematic diagram of the cooling unit in the present invention Figure 1 ;

[0034] Figure 10It is a schematic structure diagram of the cooling unit in the present invention. Figure 2 ;

[0035] Figure 11 It is a schematic connection structure diagram of the distillation tank and the cooling unit in the present invention.

[0036] In the figure: 1, frame; 2, cover plate; 3, grid plate; 4, foot wheel; 7, distillation spraying assembly; 8, condensate liquid collection tank; 9, cooling unit; 10, lower layer floor board; 11, upper layer floor board; 12, electrical cabinet; 13, drainage diaphragm pump; 14, first pneumatic diaphragm pump; 16, water tank; 17, anti-impact plate; 18, three-way joint; 19, pressure gauge; 110, cold water pipeline; 111, water pump; 112, water pump liquid inlet end; 113, suction head; 114, float level sensor; 115, water injector; 117, water pump liquid outlet end; 32, ball valve; 33, digital flow switch; 51, concentrated waste liquid outlet end; 52, waste water stock solution inlet end; 53, reclaimed water outlet end; 71, main spraying tank pipe; 72, distillation tank; 73, distillation bottom interface; 74, connecting pipeline; 75, lower part interface of distillation tank; 76, upper part interface of distillation tank; 77, pneumatic control ball valve; 78, bottom interface of main spraying tank pipe; 79, air pipe; 710, spraying tank support; 711, Y-type filter; 712, top interface of spraying tank; 171, water injector fixing plate; 81, outer ring heating pipe; 82, inner ring heating pipe; 83, heating pipe liquid outlet pipe; 84, heating pipe liquid inlet pipe; 88, water receiving tray; 91, bottom plate; 92, first condenser; 93, second condenser; 94, refrigeration compressor; 95, liquid storage bottle; 96, drying filter; 97, first solenoid valve; 98, expansion valve; 99, second solenoid valve; 910, plate heat exchanger; 911, plate heat exchanger support; 912, refrigerant outlet of plate heat exchanger; 913, cold liquid outlet of plate heat exchanger; 914, refrigerant inlet of plate heat exchanger; 915, hot liquid inlet of plate heat exchanger. Detailed implementation manners

[0037] The following uses specific specific examples to illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0038] The purpose of the present invention is to provide a vacuum distillation water treatment device for the defects of the existing technology.

[0039] Embodiment 1

[0040] Refer toFigures 1 to 4 As shown in the figure, this embodiment provides a vacuum distillation water treatment device, which includes a frame 1, casters 4, a distillation spray assembly 7, a water tank 16, a negative pressure assembly, a concentrated waste liquid outlet end 51, a waste water stock solution inlet end 52, and a reclaimed water outlet end 53. The frame 1 is used to support the vacuum distillation water treatment device of the present invention. A lower layer floor board 10 is fixed at the bottom of the frame, and an upper layer floor board 11 is fixed in the middle of the frame. The upper layer floor board 11 divides the interior of the frame 1 into an upper chamber above the upper layer floor board 11 and a lower chamber below the upper layer floor board 11. A cover plate 2 is arranged on the outer side of the frame 1, and the cover plate at the front of the lower chamber is a grid plate 3. An electrical cabinet 12 is also installed in the upper chamber. The electrical cabinet 12 is used to place the electric control system. The above-mentioned electric control system is not the key point of protection of the present invention and will not be elaborated here. There are multiple casters 4, which are symmetrically fixed at the bottom end of the frame 1 and are used to move and support the frame 1 and its internal structure. The waste water stock solution inlet end 52 is fixed at the front of the lower layer floor board 10, and the waste water stock solution flows in from the waste water stock solution inlet end 52 for subsequent treatment. The water tank 16 is fixed at the upper end of the upper layer floor board 11, and the water tank 16 is used to store the reclaimed water obtained by distillation. The distillation spray assembly 7 is fixed on the upper layer floor board 11, and the distillation spray assembly 7 is used to distill the waste water stock solution. The negative pressure assembly is used to provide negative pressure for the distillation spray assembly 7 to improve the distillation effect. The concentrated waste liquid outlet end 51 is fixed at the front of the lower layer floor board 10, and the concentrated waste liquid obtained after the treatment of the waste water stock solution is discharged from the concentrated waste liquid outlet end 51. The reclaimed water outlet end 53 is also fixed at the front of the lower layer floor board 10, and the reclaimed water obtained after the treatment of the waste water stock solution is discharged from the reclaimed water outlet end 53.

[0041] The waste water stock solution containing organic matter flows into the vacuum distillation water treatment device of the present invention from the waste water stock solution inlet end 52, and is distilled by the distillation spray assembly 7. During the distillation process, the negative pressure assembly provides negative pressure for the distillation spray assembly 7 to improve the distillation effect. The reclaimed water obtained after the treatment of the waste water stock solution is stored in the water tank 16 and discharged from the reclaimed water outlet end 53, and the concentrated waste liquid obtained after the treatment of the waste water stock solution is discharged from the concentrated waste liquid outlet end 51. Thus, continuous and uninterrupted automatic treatment of the waste water stock solution can be realized, with high treatment efficiency, and the reclaimed water and concentrated waste liquid generated during the treatment can be collected separately, which is convenient for centralized subsequent use.

[0042] Refer to Figures 4 to 6As shown in the figure, the distillation spray assembly 7 in this embodiment includes a drainage diaphragm pump 13, a spray tank main pipe 71 and a distillation tank 72. The bottom of the distillation tank 72 is fixed on the upper deck 11. A lower distillation tank interface 75 is connected to the lower part of the distillation tank 72. The lower distillation tank interface 75 is connected to the waste liquid original liquid inlet end 52 through a pipeline. The waste liquid original liquid flows into the inner side of the lower part of the distillation tank 72 from the lower distillation tank interface 75, and the waste liquid original liquid is heated by the distillation tank 72. The upper part and the lower part of the spray tank main pipe 71 are connected through an air pipe 79. The bottom end of the spray tank main pipe 71 is vertically fixed at the top end of the spray tank support 710. The bottom end of the spray tank support 710 is vertically supported on the upper deck 11. The upper part of the spray tank main pipe 71 is connected to the upper part of the distillation tank 72 through a connecting pipeline 74. A plurality of spray tank main pipe bottom interfaces 78 communicating with the inside thereof are arranged on the outer side of the bottom of the spray tank main pipe 71. The spray tank main pipe bottom interfaces 78 extend towards the water tank 16 through pipelines. A spray tank top interface 712 is arranged at the top of the spray tank main pipe 71. The spray tank top interface 712 is connected to the water suction head 113 through a pipeline. The water suction head 113 is located at the inner bottom end of the water tank 16. A ball valve 32 and a digital flow switch 33 are also installed on the pipeline between the spray tank top interface 712 and the water suction head 113. The digital flow switch 33 in this embodiment uses the PF3W720-04 type digital flow switch in the prior art. Under the action of the negative pressure in the spray tank main pipe 71, the water suction head 113 is used to suck the recycled water from the water tank 16 to spray and cool and liquefy the water vapor in the spray tank main pipe 71. The drainage diaphragm pump 13 is fixed at the upper end of the lower deck 10. A distillation bottom interface 73 is arranged at the bottom end of the distillation tank 72. The distillation bottom interface 73 is connected to the inlet of the drainage diaphragm pump 13 through a pipeline. The outlet of the drainage diaphragm pump 13 is connected to the concentrated waste liquid outlet end 51 through a pipeline, which is used to assist in discharging the concentrated waste liquid. An upper distillation tank interface 76 communicating with the inside thereof is also arranged on the outer side of the upper part of the distillation tank 72. An air control ball valve 77 is installed on the upper distillation tank interface 76. A Y-type filter 711 is also arranged on the pipeline between the distillation bottom interface 73 and the inlet of the drainage diaphragm pump 13.

[0043] The waste liquid original liquid flows into the inner side of the lower part of the distillation tank 72 from the lower distillation tank interface 75, and the waste liquid original liquid is heated by the distillation tank 72. The water in the waste liquid original liquid is heated and evaporated. The water vapor flows from the upper part of the distillation tank 72 to the inside of the spray tank main pipe 71 through the connecting pipeline 74. Under the action of the negative pressure in the spray tank main pipe 71, the water suction head 113 sucks the recycled water from the water tank 16 to spray and cool and liquefy the water vapor, so that it is converted into a liquid and flows into the water tank 16 from the spray tank main pipe bottom interface 78 to be recycled.

[0044] Refer to Figure 7 、 Figure 8As shown in the figure, the negative pressure assembly in this embodiment includes a water injector 115, a tee 18, and a water injector fixing plate 171. The water injector 115 has two liquid inlet ends and one liquid outlet end. The first liquid inlet end on the side of the water injector 115 is connected to the bottom interface 78 of the main spray tank pipe through a pipeline. The bottom liquid outlet end of the water injector 115 faces vertically into the water tank 16. The first end at the top of the tee 18 is connected to a pressure gauge 19. In this embodiment, the measuring range of the pressure gauge 19 is preferably 0 - 2 MPa. The second end at the bottom of the tee 18 is communicated with the second liquid inlet end at the top of the water injector 115. The third end on the side of the tee 18 is connected to the cold water pipeline 110. The water injector 115 is vertically fixed at the side end of the water injector fixing plate 171. The water injector fixing plate 171 is fixed in the upper chamber and is used to support the water injector 115.

[0045] The cold water pipeline 110 is communicated with the cold water conveying device. The cold water conveying device is used to convey a high-speed cold water flow into the cold water pipeline 110, so that the hot water and steam flowing from the bottom interface 78 of the main spray tank pipe into the water injector 115 are mixed with the cold water flow, the hot water and steam are cooled down, and a certain negative pressure is formed in the water injector 115 and the main spray tank pipe 71 and the distillation tank 72 communicated therewith, assisting the distillation effect.

[0046] Refer to Figure 7 、 Figure 8 As shown in the figure, the cold water conveying device in this embodiment includes a water pump 111. The water pump 111 in this embodiment uses the CHL8 - 50 type pump of Nanfang Pump Industry in the prior art. The water pump 111 is fixed on the upper deck 11 through a pump base. The water pump 111 is located beside the water tank 16. The water pump inlet end 112 of the water pump 111 is communicated with the bottom of the water tank 16 through a pipeline. The water pump outlet end 117 of the water pump 111 is connected to the input end of the cooling unit 9 through a pipeline. The input liquid is cooled down by the cooling unit 9. The output end of the cooling unit 9 is connected to the cold water pipeline 110, and the cold water flow is conveyed through the cold water pipeline 110.

[0047] Refer to Figure 9 、 Figure 10As shown, the cooling unit 9 includes a bottom plate 91, a first condenser 92, a refrigeration compressor 94, a liquid storage bottle 95, and a plate heat exchanger 910. The bottom plate 91 is fixed to the top end of the lower deck plate 10 and is used to support the cooling unit 9. The plate heat exchanger 910 is fixed to the upper end of the bottom plate 91 through a plate heat exchanger bracket 911. The plate heat exchanger hot liquid inlet 915 of the plate heat exchanger 910 is connected to the liquid outlet end of the water pump through a pipeline, and the plate heat exchanger cold liquid outlet 913 of the plate heat exchanger 910 is connected and communicated with the cold water pipeline 110. The first condenser 92, the refrigeration compressor 94, and the liquid storage bottle 95 are all fixed to the upper end of the bottom plate 91. Refrigerant for the refrigeration compressor 94 is stored in the liquid storage bottle 95. The plate heat exchanger refrigerant outlet 912 of the plate heat exchanger 910 is connected and communicated with the side end liquid inlet of the refrigeration compressor 94 through a pipeline, and the plate heat exchanger refrigerant inlet 914 of the plate heat exchanger 910 is connected and communicated with the top liquid outlet end of the liquid storage bottle 95 through a pipeline. The side end liquid inlet end of the liquid storage bottle 95 is connected to the liquid outlet end of the first condenser 92, and the side end liquid outlet of the refrigeration compressor 94 is connected to the liquid inlet end of the first condenser 92. A drying filter 96, a first solenoid valve 97, and an expansion valve 98 are sequentially arranged on the pipeline between the top liquid outlet end of the liquid storage bottle 95 and the plate heat exchanger refrigerant inlet 914. The drying filter 96 in this embodiment uses a 023Z5032 type Danfoss drying filter in the prior art to prevent moisture, acid, and solid impurities from entering the refrigeration compressor. Preferably, the first solenoid valve 97 and the second solenoid valve 99 both use a 018F6701 type Danfoss solenoid valve coil in the prior art. The refrigeration compressor 94 and the first condenser 92 cooperate to do work on the refrigerant stored in the liquid storage bottle 95, so that the refrigerant circulates in the plate heat exchanger 910 to cool the flowing hot water in the plate heat exchanger 910 and turn it into flowing cold water. The first condenser 92 and the second condenser 93 in this embodiment both use an air-cooled condenser in the prior art. Further, the cooling unit 9 further includes a second condenser 93, and the second condenser 93 is also fixed to the upper end of the bottom plate 91. The side end liquid inlet end of the liquid storage bottle 95 is further connected to the liquid outlet end of the second condenser 93 through a pipeline, and the side end liquid outlet of the refrigeration compressor 94 is further connected to the liquid inlet end of the second condenser 93 through a pipeline. A second solenoid valve 99 is also arranged at the liquid inlet end of the second condenser 93. The second condenser 93 serves as a standby condenser for the first condenser 92. Through the setting of one main and one standby, the reliability of heat dissipation and cooling can be improved.

[0048] Refer to Figures 9 to 11As shown in the figure, an outer ring heating pipe 81 and an inner ring heating pipe 82 are arranged at the inner bottom of the distillation tank 72 in this embodiment. The outer ring heating pipe 81 is located outside the inner ring heating pipe 82. Both the outer ring heating pipe 81 and the inner ring heating pipe 82 are spiral hollow pipes. The first end of the outer ring heating pipe 81 is communicated with the side liquid outlet of the refrigeration compressor 94 through the heating pipe liquid outlet pipe 83. The first end of the inner ring heating pipe 82 is communicated with the liquid inlet end of the first condenser 92 through the heating pipe liquid inlet pipe 84. The second end of the outer ring heating pipe 81 is communicated with the second end of the inner ring heating pipe 82. The refrigeration compressor 94 and the first condenser 92 cooperate to do work on the refrigerant stored in the liquid storage bottle 95, so that the refrigerant circulates in the outer ring heating pipe 81 and the inner ring heating pipe 82, cooling the overheated outer ring heating pipe 81 and inner ring heating pipe 82, assisting in controlling the temperature inside the distillation tank 72, and avoiding the reaction of organic chemicals in the waste liquid due to excessive temperature inside the distillation tank 72.

[0049] Referring to Figure 8 As shown in the figure, an anti-impact plate 17 is arranged at the end corner of the water tank 16 in this embodiment. There is a gap between the bottom of the anti-impact plate 17 and the bottom end of the water tank 16. A triangular cavity is separated at the end corner of the anti-impact plate 17 and the water tank 16, and a floating ball liquid level sensor 114 is installed in the triangular cavity.

[0050] Referring to Figure 7 As shown in the figure, a water receiving tray 88 is arranged at the bottom of the water tank 16 in this embodiment. The bottom of the water receiving tray 88 is communicated with the top of the condensate liquid collection tank 8 through a hose. The condensate liquid collection tank 8 is fixed at the upper end of the lower layer floor 10. The condensate water generated outside the water tank 16 will slide down along the outer side wall of the water tank 16 into the water receiving tray 88, and then flow along the hose into the condensate liquid collection tank 8 for storage and collection.

[0051] Referring to Figure 4 As shown in the figure, a first pneumatic diaphragm pump 14 is also fixed at the upper end of the upper layer floor 11. The drainage diaphragm pump 13 and the first pneumatic diaphragm pump 14 in this embodiment both use the RVP-72111 type pneumatic diaphragm pump in the prior art. The liquid outlet end of the first pneumatic diaphragm pump 14 is communicated with the regenerated water outlet end 53 through a pipeline. The liquid inlet end of the first pneumatic diaphragm pump 14 is communicated with the upper end of the water tank 16 through a pipeline. The first pneumatic diaphragm pump 14 is used to discharge the regenerated water stored in the water tank 16 from the regenerated water outlet end 53

[0052] Working principle of the present invention: The original wastewater solution flows into the distillation spraying assembly 7 from the inlet end 52 of the original wastewater solution, specifically flowing into the inner side of the lower part of the distillation tank 72 from the lower interface 75 of the distillation tank. The distillation tank 72 heats the original wastewater solution, and the water in the original wastewater solution is heated and evaporated. The water vapor flows from the upper part of the distillation tank 72 to the main pipe 71 of the spraying tank through the connecting pipe 74. Under the action of negative pressure in the main pipe 71 of the spraying tank, the water suction head 113 sucks the regenerated water from the water tank 16 to spray and cool the water vapor to liquefy it, so that it is converted into a liquid and flows into the water tank 16 from the bottom interface 78 of the main pipe of the spraying tank to be recycled. The condensed water generated outside the water tank 16 will slide down along the outer wall of the water tank 16 into the water receiving tray 88, and then flow along the hose into the condensed water collecting tank 8 for storage and collection.

[0053] During the distillation process, the negative pressure assembly provides negative pressure to the distillation spraying assembly 7. Specifically, it is connected to the cold water conveying device through the cold water pipe 110, and the input liquid is cooled by the cooling unit 9. When cooling, the refrigeration compressor 94 in the cooling unit 9 cooperates with the first condenser 92 to do work on the refrigerant stored in the liquid storage bottle 95, so that the refrigerant circulates in the plate heat exchanger 910 and cools the flowing hot water flowing in the plate heat exchanger 910 to make it become flowing cold water. The second condenser 93 is used as a standby condenser for the first condenser 92. Through the setting of one main and one standby, the reliability of heat dissipation and cooling can be improved.

[0054] Then, the cold water conveying device is used to convey a high-speed cold water flow into the cold water pipe 110, so that the hot water and steam flowing from the bottom interface 78 of the main pipe of the spraying tank into the water injector 115 are mixed with the cold water flow, cooling the hot water and steam, and forming a certain negative pressure in the water injector 115 and the main pipe 71 of the spraying tank and the distillation tank 72 connected thereto, which can improve the distillation effect.

[0055] During the operation of the distillation spraying assembly 7, the circulation of the refrigerant in the outer heating pipe 81 and the inner heating pipe 82 can also be controlled to cool the outer heating pipe 81 and the inner heating pipe 82 with too high temperature, assisting in controlling the temperature in the distillation tank 72 and avoiding the reaction of organic chemical substances in the waste liquid due to too high temperature in the distillation tank 72.

[0056] The regenerated water obtained after treating the original wastewater solution is stored in the water tank 16 and discharged from the outlet end 53 of the regenerated water. The concentrated waste liquid obtained by treating the original wastewater solution is discharged from the outlet end 51 of the concentrated waste liquid. Thus, continuous and uninterrupted automatic treatment of the original wastewater solution can be realized, with high treatment efficiency, and the regenerated water and concentrated waste liquid generated during the treatment can be collected separately, which is convenient for centralized subsequent use.

[0057] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A vacuum distillation water treatment device, characterized in that: It includes a frame (1), the frame (1) is used to provide support, a lower layer floor board (10) is fixed at the bottom of the frame, an upper layer floor board (11) is fixed in the middle of the frame, and the upper layer floor board (11) divides the interior of the frame (1) into an upper chamber above the upper layer floor board (11) and a lower chamber below the upper layer floor board (11). A cover plate (2) is arranged on the outer side of the frame (1), and the cover plate at the front of the lower chamber is a grid plate (3); foot wheels (4), there are multiple of the foot wheels (4), symmetrically fixed at the bottom end of the frame (1), and used to move and support the frame (1) and its internal structure; a waste water stock solution inlet end (52), the waste water stock solution inlet end (52) is fixed at the front of the lower layer floor board (10), and the waste water stock solution flows in from the waste water stock solution inlet end (52) for subsequent treatment; a water tank (16), the water tank (16) is fixed at the upper end of the upper layer floor board (11), and the water tank (16) is used to store the regenerated water obtained by distillation; a distillation spraying assembly (7), the distillation spraying assembly (7) is fixed on the upper layer floor board (11), and the distillation spraying assembly (7) is used to distill the waste water stock solution; a negative pressure assembly, the negative pressure assembly is used to provide negative pressure for the distillation spraying assembly (7) to improve the distillation effect; a concentrated waste liquid outlet end (51), the concentrated waste liquid outlet end (51) is fixed at the front of the lower layer floor board (10), and the concentrated waste liquid obtained after treating the waste water stock solution is discharged from the concentrated waste liquid outlet end (51); and a regenerated water outlet end (53), the regenerated water outlet end (53) is also fixed at the front of the lower layer floor board (10), and the regenerated water obtained after treating the waste water stock solution is discharged from the regenerated water outlet end (53).

2. The vacuum distillation water treatment device according to claim 1, characterized in that: the distillation spraying assembly (7) includes a distillation tank (72), the bottom of the distillation tank (72) is fixed on the upper layer floor board (11), a lower interface of the distillation tank (75) is communicated with the lower part of the distillation tank (72), and a pipeline is connected between the lower interface of the distillation tank (75) and the waste water stock solution inlet end (52). The waste water stock solution flows into the inner side of the lower part of the distillation tank (72) from the lower interface of the distillation tank (75), and the waste water stock solution is heated by the distillation tank (72); a main spraying tank pipe (71), the upper part and the lower part of the main spraying tank pipe (71) are communicated through an air pipe (79), the bottom end of the main spraying tank pipe (71) is vertically fixed at the top end of a spraying tank support member (710), the bottom end of the spraying tank support member (710) is vertically supported on the upper layer floor board (11), and the upper part of the main spraying tank pipe (71) is communicated with the upper part of the distillation tank (72) through a connecting pipeline (74); At the top of the main spray tank pipe (71), there is a top interface (712) of the spray tank. The top interface (712) of the spray tank is connected to the suction head (113) through a pipe. The suction head (113) is located at the inner bottom end of the water tank (16). A ball valve (32) and a digital flow switch (33) are also installed on the pipe between the top interface (712) of the spray tank and the suction head (113). Under the action of negative pressure in the main spray tank pipe (71), the suction head (113) is used to suck the recycled water from the water tank (16) to spray and cool and liquefy the water vapor in the main spray tank pipe (71). A drainage diaphragm pump (13), the drainage diaphragm pump (13) is fixed at the upper end of the lower deck (10). At the bottom end of the distillation tank (72), there is a distillation bottom interface (73). The distillation bottom interface (73) is connected to the inlet of the drainage diaphragm pump (13) through a pipe. The outlet of the drainage diaphragm pump (13) is connected to the concentrated waste liquid outlet end (51) through a pipe. On the outer side of the bottom of the main spray tank pipe (71), there are several bottom interfaces (78) of the main spray tank pipe that are connected to its interior. The bottom interfaces (78) of the main spray tank pipe extend into the water tank (16) through pipes. On the outer side of the upper part of the distillation tank (72), there is also an upper interface (76) of the distillation tank that is connected to its interior. An air-controlled ball valve (77) is installed on the upper interface (76) of the distillation tank. A Y-type filter (711) is also provided on the pipe between the distillation bottom interface (73) and the inlet of the drainage diaphragm pump (13).

3. The vacuum distillation water treatment device according to claim 2, characterized in that: The negative pressure assembly includes A water injector (115), the water injector (115) has two liquid inlet ends and one liquid outlet end. The first liquid inlet end on the side of the water injector (115) is connected to the bottom interface (78) of the main spray tank pipe through a pipe. The bottom liquid outlet end of the water injector (115) is vertically directed towards the inside of the water tank (16). A tee (18), the first end at the top of the tee (18) is connected to a pressure gauge (19). The second end at the bottom of the tee (18) is communicated with the second end at the top of the water injector (115). The third end on the side of the tee (18) is connected to the cold water pipe (110); and A water injector fixing plate (171), the water injector (115) is vertically fixed at the side end of the water injector fixing plate (171). The water injector fixing plate (171) is fixed in the upper chamber for supporting the water injector (115). The cold water pipe (110) is communicated with a cold water conveying device. The cold water conveying device is used to convey a high-speed cold water flow into the cold water pipe (110), so that the hot water and steam flowing from the bottom interface (78) of the main spray tank pipe into the water injector (115) are combined with the cold water flow, cool the hot water and steam, and form a certain negative pressure in the water injector (115) and the main spray tank pipe (71) and the distillation tank (72) communicated with it to assist the distillation effect.

4. The vacuum distillation water treatment device according to claim 3, characterized in that: The cold water conveying device includes a water pump (111). The water pump (111) is fixed to the upper end of the upper deck plate (11) through a pump base. The water pump (111) is located beside the water tank (16). The water pump inlet end (112) of the water pump (111) is communicated with the bottom of the water tank (16) through a pipeline. The water pump outlet end (117) of the water pump (111) is communicated with the input end of the cooling unit (9) through a pipeline. The input liquid is cooled by the cooling unit (9), and the output end of the cooling unit (9) is connected to the cold water pipeline (110), and the cold water flow is conveyed through the cold water pipeline (110).

5. The vacuum distillation water treatment device according to claim 4, characterized in that: The cooling unit (9) includes a bottom plate (91), a first condenser (92), a refrigeration compressor (94), a liquid storage bottle (95) and a plate heat exchanger (910). The bottom plate (91) is fixed to the top end of the lower deck plate (10) for supporting the cooling unit (9). The plate heat exchanger (910) is fixed to the upper end of the bottom plate (91) through a plate heat exchanger bracket (911). The plate heat exchanger hot liquid inlet (915) of the plate heat exchanger (910) is connected to the water pump outlet end (117) through a pipeline, and the plate heat exchanger cold liquid outlet (913) of the plate heat exchanger (910) is communicated with the cold water pipeline (110). The first condenser (92), the refrigeration compressor (94), and the liquid storage bottle (95) are all fixed to the upper end of the bottom plate (91). A refrigerant for use by the refrigeration compressor (94) is stored in the liquid storage bottle (95). The plate heat exchanger refrigerant outlet (912) of the plate heat exchanger (910) is communicated with the side end inlet of the refrigeration compressor (94) through a pipeline. The plate heat exchanger refrigerant inlet (914) of the plate heat exchanger (910) is communicated with the top outlet end of the liquid storage bottle (95) through a pipeline. The side end inlet of the liquid storage bottle (95) is communicated with the outlet end of the first condenser (92). The side end outlet of the refrigeration compressor (94) is communicated with the inlet end of the first condenser (92). A drying filter (96), a first solenoid valve (97) and an expansion valve (98) are sequentially arranged on the pipeline between the top outlet end of the liquid storage bottle (95) and the plate heat exchanger refrigerant inlet (914). The refrigeration compressor (94) and the first condenser (92) cooperate to do work on the refrigerant stored in the liquid storage bottle (95), so that the refrigerant circulates in the plate heat exchanger (910) to cool the flowing hot water flowing in the plate heat exchanger (910) and turn it into flowing cold water.

6. The vacuum distillation water treatment device according to claim 5, characterized in that: The cooling unit (9) further includes a second condenser (93), which is also fixed to the upper end of the bottom plate (91). The liquid inlet end on the side of the liquid storage bottle (95) is also communicated with the liquid outlet end of the second condenser (93) through a pipeline. The liquid outlet port on the side of the refrigeration compressor (94) is also communicated with the liquid inlet end of the second condenser (93) through a pipeline. A second solenoid valve (99) is also provided at the liquid inlet end of the second condenser (93).

7. The vacuum distillation water treatment device according to claim 6, characterized in that: An outer ring heating pipe (81) and an inner ring heating pipe (82) are arranged at the inner bottom of the distillation tank (72). The outer ring heating pipe (81) is located outside the inner ring heating pipe (82). Both the outer ring heating pipe (81) and the inner ring heating pipe (82) are spiral hollow pipes. The first end of the outer ring heating pipe (81) is communicated with the liquid outlet port on the side of the refrigeration compressor (94) through a heating pipe liquid outlet pipe (83). The first end of the inner ring heating pipe (82) is communicated with the liquid inlet end of the first condenser (92) through a heating pipe liquid inlet pipe (84). The second end of the outer ring heating pipe (81) is communicated with the second end of the inner ring heating pipe (82), The refrigeration compressor (94) and the first condenser (92) are used in cooperation to do work on the refrigerant stored in the liquid storage bottle (95), so that the refrigerant circulates in the outer ring heating pipe (81) and the inner ring heating pipe (82), and cools the overheated outer ring heating pipe (81) and inner ring heating pipe (82).

8. The vacuum distillation water treatment device according to any one of claims 1 to 7, characterized in that: A shock-proof plate (17) is arranged at the corner of the water tank (16). There is a gap between the bottom of the shock-proof plate (17) and the bottom end of the water tank (16). A triangular cavity is divided at the corner of the shock-proof plate (17) and the water tank (16), and a float level sensor (114) is installed in the triangular cavity.

9. The vacuum distillation water treatment device according to any one of claims 1 to 7, characterized in that: A water receiving tray (88) is arranged at the bottom of the water tank (16). The bottom of the water receiving tray (88) is communicated with the top of the condensate collection tank (8) through a hose. The condensate collection tank (8) is fixed to the upper end of the lower layer of the floor slab (10). The condensate generated outside the water tank (16) slides down along the outer side wall of the water tank (16) into the water receiving tray (88), and then flows into the condensate collection tank (8) along the hose for storage.

10. The vacuum distillation water treatment device according to claim 1, characterized in that: A first pneumatic diaphragm pump (14) is further fixed to the upper end of the upper layer of the floor slab (11). The liquid outlet end of the first pneumatic diaphragm pump (14) is communicated with the regenerated water outlet end (53) through a pipeline. The liquid inlet end of the first pneumatic diaphragm pump (14) is communicated with the upper end of the water tank (16) through a pipeline. The first pneumatic diaphragm pump (14) is used to discharge the regenerated water stored in the water tank (16) from the regenerated water outlet end (53).

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