CN210528516U

CN210528516U - Evaporation concentration equipment

Info

Publication number: CN210528516U
Application number: CN201921432399.5U
Authority: CN
Inventors: 梁绿轩; 易志钢
Original assignee: Xiamen Jiayuhua Electroplating Equipment Co Ltd
Current assignee: Xiamen Jiayuhua Electroplating Equipment Co Ltd
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2020-05-15
Anticipated expiration: 2029-08-30

Abstract

The utility model discloses an evaporation concentration equipment, including PLC switch board, evaporimeter, vapour and liquid separator, circulating fan, distilled water jar and vacuum pump. The evaporator comprises a tank body, a circulating pump and a circulating pipeline, and a liquid storage chamber, a separation chamber and an evaporation chamber are sequentially arranged in the tank body from bottom to top. The two ends of the circulating pump are respectively connected with the liquid storage chamber and the evaporation chamber, and the upper part of the side wall of the liquid storage chamber is provided with a feed liquid inlet and a hot gas outlet. The inside of separator is equipped with a plurality of separator tubes, and the both ends of separator tube communicate with evaporating chamber and liquid storage chamber respectively, and separator chamber lateral wall upper portion and lower part are equipped with steam inlet and condensate water discharge port respectively, and vapour and liquid separator's both ends link to each other with steam outlet and circulating fan respectively, and circulating fan is connected with steam inlet, and the condensate water discharge port links to each other with the retort, and the retort links to each other with the vacuum pump. The utility model discloses an evaporation concentration equipment can be used to electroplate factory or water treatment plant, and concentration efficiency is high, and concentrate and distilled water all can be retrieved, and no waste water produces, and is energy-concerving and environment-protective.

Description

Evaporation concentration equipment

Technical Field

The utility model belongs to the technical field of evaporative concentration, in particular to evaporative concentration equipment.

Background

The cleaning of the electroplating workpiece is an important link in the electroplating process and is also a main source of electroplating production sewage, and the common problem of the electroplating production process is the treatment and discharge of a large amount of wastewater. The waste water from plating layer of workpiece is the main source of heavy metal pollution in electroplating industry, and its component is formed from hexavalent chromium and chromium fog inhibitor, and can continuously pollute ecological environment.

The conventional treatment method mainly comprises a reduction precipitation method and an ion exchange method, wherein the reduction precipitation method mainly comprises adding an inorganic reducing agent and adding alkali for precipitation to generate solid chromium mud which is difficult to treat, and the ion exchange method mainly utilizes an ion exchange technology for wastewater treatment, so that the equipment cost is high, the operating cost is high, and the popularization is limited. In the prior art, the electroplating wastewater is generally treated by adopting an evaporation concentration method, so that the discharge of the wastewater can be reduced, but the evaporation concentration equipment for the electroplating wastewater in the prior art generally has the problems of low efficiency, poor effect and high energy consumption.

Disclosure of Invention

To the above problem, an object of the utility model is to provide an evaporation concentration equipment that treatment effeciency is high, effectual and the energy consumption is low to solve the evaporation concentration equipment among the prior art inefficiency, the poor and high problem of energy consumption of effect.

In order to realize the purpose, the utility model discloses a technical scheme as follows:

an evaporation concentration device comprises a PLC control cabinet, an evaporator, a gas-liquid separator, a circulating fan, a distilled water tank and a vacuum pump. The evaporator comprises a tank body, a circulating pump and a circulating pipeline, the tank body is divided into a liquid storage chamber, a separation chamber and an evaporation chamber which are sequentially arranged from bottom to top through a partition plate, and a heating pipe used for heating feed liquid is arranged in the liquid storage chamber. The liquid inlet of the circulating pump is communicated with the bottom of the liquid storage chamber, and the liquid outlet of the circulating pump is communicated with the evaporation chamber through the circulating pipeline. The lateral wall upper portion of stock solution room is equipped with feed liquid import and steam outlet, feed liquid access connection inlet pipe, the inside of separator chamber is equipped with a plurality of separator tubes, the both ends of separator tube are linked together with evaporating chamber and stock solution room respectively. The upper part and the lower part of the side wall of the separation chamber are respectively provided with a hot gas inlet and a condensed water discharge port, one end of the gas-liquid separator is connected with the hot gas outlet, and the other end of the gas-liquid separator is connected with the air inlet of the circulating fan through a first gas pipe. And the gas outlet of the circulating fan is connected with the hot gas inlet through a second gas pipe, and the condensed water discharge port is connected with the distilled water tank through a condensed water discharge pipe. The top of the distilled water tank is provided with a vacuum port, and the vacuum port is connected with the vacuum pump through a pipeline. The heating pipe, the circulating pump, the circulating fan and the vacuum pump are respectively electrically connected with the PLC control cabinet.

Further, still include drainage heat sink, drainage heat sink include drain pump, first level gauge, drain line and cooling pipeline, first level gauge establish in the distilled water jar. The liquid inlet of the drainage pump is communicated with the bottom of the distilled water tank through a pipeline, and the liquid outlet of the drainage pump is respectively connected with the drainage pipeline and the cooling pipeline. The water discharge pipeline is connected to a recycling water bucket and is provided with a water discharge valve. The cooling pipeline comprises a first cooling pipeline and a second cooling pipeline which are connected in parallel. The first cooling pipeline is communicated with the first gas pipe, a first cooling valve is arranged on the first cooling pipeline, and a first thermometer is arranged in the first gas pipe. The second cooling pipeline is communicated with the second gas pipe, a second cooling valve is arranged on the second cooling pipeline, and a second thermometer is arranged in the second gas pipe. The draining pump, the draining valve, the first liquid level meter, the first cooling valve, the second cooling valve, the first thermometer and the second thermometer are respectively electrically connected with the PLC control cabinet.

The drainage cooling device further comprises a cooling water return pipe, one end of the cooling water return pipe is communicated with the bottom of the second gas conveying pipe, and the other end of the cooling water return pipe is communicated with the distilled water tank.

The distillation water tank is characterized by further comprising a pressure difference adjusting pipe, wherein one end of the pressure difference adjusting pipe is communicated with the first gas conveying pipe, the other end of the pressure difference adjusting pipe is communicated with the distillation water tank, and a pressure difference valve is arranged on the pressure difference adjusting pipe. The first gas transmission pipe in be equipped with first vacuum gauge, the distillation water pitcher in be equipped with the second vacuum gauge, differential pressure valve, first vacuum gauge and second vacuum gauge respectively with PLC switch board electric connection.

Further, the evaporator also comprises a discharge pump, a concentration meter and a second liquid level meter, wherein the concentration meter and the second liquid level meter are arranged in the liquid storage chamber. The liquid inlet of the discharge pump is communicated with the bottom of the liquid storage chamber through a discharge pipe, the liquid outlet is connected to the liquid recycling barrel through a pipeline, and the discharge pipe is provided with a discharge valve. The discharge pump, the concentration meter, the second liquid level meter and the discharge valve are respectively electrically connected with the PLC control cabinet.

Further, the gas-liquid separator comprises a transition tank and a gas-liquid separation tank, and the top of the transition tank is connected with the top of the separation tank through a connecting pipe. And the bottoms of the transition tank and the gas-liquid separation tank are respectively provided with a separated water return pipe, and the separated water return pipes are connected to the liquid storage chamber. The lateral wall lower part of transition jar with the steam outlet links to each other, the gas-liquid separation jar include outer jar and establish the inside inner tube of outer jar, the upper end of inner tube fix outer jar upper end and with the connecting pipe intercommunication, the lower extreme opening of inner tube extends to the lower part of outer jar, the lateral wall upper portion of outer jar with first gas-supply pipe links to each other.

Further, the inside of stock solution room is equipped with the third thermometer that is used for monitoring feed liquid temperature, the third thermometer with PLC switch board electric connection.

Furthermore, the circulating pipeline is in one end part in the evaporation chamber is connected with a plurality of spray heads, and the feed liquid sprayed by the circulating pipeline is converted into a gaseous state by the plurality of spray heads.

Furthermore, in order to facilitate observation of the operation state of the whole evaporation concentration equipment, the condensed water discharge pipe is provided with a section of transparent glass pipe for observing the flow rate of the condensed water, and the tank body and the gas-liquid separator are respectively provided with one to a plurality of transparent observation windows.

Further, in order to enable the interior of the evaporator to be relatively stable in temperature and achieve an energy-saving effect, the outer portion of the side wall of the tank body is coated with a heat insulation layer.

The utility model discloses following beneficial effect has: the evaporation concentration equipment can be used for electroplating plants, water treatment plants, medical plants, wineries or food plants and the like, adopts a PLC control cabinet for automatic control, and has high concentration efficiency; the produced concentrated solution can be directly used in the front-stage process of an electroplating plant or a water treatment plant, no wastewater or waste gas is generated in the whole evaporation concentration process, and the produced distilled water can be directly used for cooling a pipeline and can also be directly discharged or used in other procedures; through carrying out the internal circulation with steam, set up heat preservation and whole evaporation concentration link on the surface of the evaporating pot body and be in going on under the vacuum environment etc. can fall to the minimum with the energy consumption of whole equipment, realize energy-concerving and environment-protective theory better, be suitable for and use widely on the industry.

Drawings

Fig. 1 is a schematic structural diagram of the evaporation concentration apparatus of the present invention.

Fig. 2 is a schematic view of the flow principle of the present invention.

Description of the main component symbols: 1. a PLC control cabinet; 2. an evaporator; 20. a partition plate; 201. a feed liquid inlet; 202. a hot gas outlet; 203. a feed pipe; 204. a separation tube; 205. a hot gas inlet; 206. a condensed water discharge port; 207. a condensed water discharge pipe; 208. a glass transparent tube; 21. a tank body; 210. a heat-insulating layer; 211. a liquid storage chamber; 212. a separation chamber; 213. an evaporation chamber; 22. a circulation pump; 23. a circulation pipe; 230. an atomizing spray head; 24. a discharge pump; 241. a discharge pipe; 242. a discharge valve; 25. a concentration meter; 26. a second level gauge; 27. a third thermometer; 28. heating a tube; 30. a connecting pipe; 300. a separated water return pipe; 31. a transition tank; 32. a separation tank; 321. an outer tank; 322. an inner tube; 4. a circulating fan; 41. a first gas delivery pipe; 411. a first thermometer; 412. a first vacuum gauge; 42. a second gas delivery pipe; 421. a second thermometer; 5. a distilled water tank; 51. a vacuum port; 511. a vacuum tube; 512. a vacuum valve; 52. a second vacuum gauge; 6. a vacuum pump; 701. a first temperature lowering valve; 702. a second temperature reducing valve; 71. draining pump; 72. a first liquid level meter; 73. a drain line; 731. a drain valve; 74. a cooling pipeline; 741. a first cooling pipeline; 742. a second cooling pipeline; 75. a cooling water return pipe; 8. a differential pressure regulating tube; 81. a differential pressure valve; 91. a feed liquid recycling barrel; 92. a recycling water bucket; 10. a frame; 100. a transparent window.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

As shown in fig. 1 and 2, an evaporation concentration device comprises a PLC control cabinet 1, an evaporator 2, a gas-liquid separator, a circulating fan 4, a distilled water tank 5, a vacuum pump 6, a drainage cooling device and a differential pressure adjusting pipe 8, wherein the evaporator 2, the gas-liquid separator, the circulating fan 4, the distilled water tank 5 and the vacuum pump 6 are all fixed on a frame 10.

The evaporator 2 comprises a tank 21, a circulating pump 22, a circulating pipeline 23, a discharge pump 24, a concentration meter 25, a second liquid level meter 26, a third temperature meter 27 and a heating pipe 28, wherein a heat-insulating layer 210 is coated outside the side wall of the tank 21. The interior of the tank 21 is completely divided into a liquid storage chamber 211, a separation chamber 212 and an evaporation chamber 213 which are sequentially arranged from bottom to top by an upper partition plate 20 and a lower partition plate 20, and transparent windows 100 are respectively arranged on the liquid storage chamber 211 and the evaporation chamber 213. The concentration meter 25, the third thermometer 27 and the heating pipe are respectively arranged at the bottom in the liquid storage chamber 211, and the second liquid level meter 26 is arranged on the side wall of the liquid storage chamber 211. The liquid inlet of the circulating pump 22 is communicated with the bottom of the liquid storage chamber 211, the liquid outlet is communicated with the evaporation chamber 213 through a circulating pipeline 23, and one end part of the circulating pipeline 23 in the evaporation chamber 213 is connected with a plurality of atomizing nozzles 230. The upper part of the side wall of the liquid storage chamber 211 is provided with a feed liquid inlet 201 and a hot gas outlet 202, the feed liquid inlet 201 is connected with a feed pipe 203, the inside of the separation chamber 213 is provided with a plurality of separation pipes 204 which are vertically arranged, and the two ends of the separation pipes 204 are respectively communicated with the evaporation chamber 213 and the liquid storage chamber 211 in a sealing way. The upper part and the lower part of the side wall of the separation chamber 213 are respectively provided with a hot air inlet 205 and a condensed water discharge port 206, the condensed water discharge port 206 is connected with the distilled water tank 5 through a condensed water discharge pipe 207, and the condensed water discharge pipe 207 is provided with a section of glass transparent pipe 208 for observing the flow of the condensed water. The liquid inlet of the discharging pump 24 is communicated with the bottom of the liquid storage chamber 211 through a discharging pipe 241, the liquid outlet is connected to the liquid recycling barrel 91 through a pipeline, and a discharging valve 242 is arranged on the discharging pipe 241.

The gas-liquid separator comprises a transition tank 31 and a gas-liquid separation tank 32, the top of the transition tank 31 is connected with the top of the separation tank 32 through a connecting pipe 30, and the bottom of the transition tank 31 is provided with a transparent window 100. The bottoms of the transition tank 31 and the gas-liquid separation tank 32 are respectively provided with a separated water return pipe 300, and the separated water return pipe 300 is connected to the liquid storage chamber 211. The gas-liquid separation tank 32 includes an outer tank 321 and an inner pipe 322 provided inside the outer tank 321, an upper end of the inner pipe 322 is fixed to an upper end of the outer tank 321 and communicates with the connection pipe 30, and a lower end of the inner pipe 322 is open and extends to a lower portion of the outer tank 321. The lower part of the side wall of the transition tank 31 is connected with the hot air outlet 202, the upper part of the side wall of the outer tank 321 is connected with the air inlet end of the circulating fan 4 through a first air pipe 41, and the air outlet end of the circulating fan 4 is communicated with the hot air inlet 205 through a second air pipe 42.

The drainage cooling device comprises a drainage pump 71, a first liquid level meter 72, a drainage pipeline 73, a cooling pipeline 74 and a cooling water return pipeline 75, wherein the first liquid level meter 72 is arranged in the distilled water tank 5. The water inlet of the water discharge pump 71 is connected to the bottom of the distilled water tank 5 through a pipeline, and the water outlet is connected to the water discharge pipeline 73 and the cooling pipeline 74 respectively. The drain line 73 is connected to the reuse water tank 92, and a drain valve 731 is provided on the drain line 73. The cooling line 74 includes a first cooling line 741 and a second cooling line 742 that are connected in parallel to each other. The first temperature reduction pipeline 741 is communicated with the first air conveying pipe 41, a first temperature reduction valve 701 is arranged on the first temperature reduction pipeline 741, and a first thermometer 411 is arranged in the first air conveying pipe 41. The second temperature reduction pipeline 742 is communicated with the second air delivery pipe 42, a second temperature reduction valve 702 is arranged on the second temperature reduction pipeline 742, and a second thermometer 421 is arranged in the second air delivery pipe 42. The first and second cool down valves 701 and 702 may be manual valves or automatic valves. One end of the cooling water return pipe 75 is communicated with the bottom (lowest point) of the second gas pipe 42, and the other end is communicated with the distilled water tank 5.

One end of the differential pressure adjusting pipe 8 is communicated with the first gas transmission pipe 41, the other end is communicated with the distilled water tank 5, a differential pressure valve 81 is arranged on the differential pressure adjusting pipe 8, and the differential pressure valve 81 can be a manual valve or an automatic valve. The top of the distilled water tank 5 is provided with a vacuum port 51, the vacuum port 51 is connected with the extraction end of the vacuum pump 6 through a vacuum pipe 511, the vacuum pipe 511 is provided with a vacuum valve 512, and the exhaust end of the vacuum pump 6 is connected with a drainage pipeline 73. The first vacuum gauge 412 is arranged in the first gas transmission pipe 41, and the second vacuum gauge 52 is arranged in the distilled water tank 5.

The utility model discloses a theory of operation does: the vacuum pump 6 acts to vacuumize the distilled water tank 5, so that the whole evaporation and concentration process is carried out in a vacuum state, and when the vacuum of the system meets the requirement, the vacuum pump 6 stops acting. Electroplating wastewater of an electroplating plant enters the liquid storage chamber 211 through the feeding pipe 203, the heating pipe 28 works to enable the temperature of the feed liquid to rise to 80 ℃ and maintain a constant temperature, the feed liquid in the liquid storage chamber 211 is pumped into the evaporation chamber 213 by the circulating pump 22 through the circulating pipeline 23 and is sprayed out in an atomizing and spraying mode, the sprayed feed liquid flows back to the liquid storage chamber 211 through the plurality of separation pipes 204, moisture in the feed liquid is condensed on the outer surface of the separation pipe 204 under a certain temperature condition and flows to the bottom of the separation chamber 212, and the condensed water flows into the distilled water tank 5 through the condensed water discharge pipe 207. The hot air at the top of the liquid storage chamber 211 enters the transition tank 31 and the gas-liquid separation tank 32 under the suction of the circulating fan 4, the generated separated water flows back to the liquid storage chamber 211 through the separated water return pipe 300, and the rest hot air finally enters the separation chamber 212 through the hot air inlet 205 through the circulating fan 4.

The first vacuum gauge 412 monitors the vacuum in the first gas transmission pipe 41 in real time, the second vacuum gauge 52 monitors the vacuum in the distilled water tank 5 in real time, and if the pressure difference is too large, the pressure difference valve 81 is automatically or manually opened to realize the adjustment and balance of the pressure difference. The first thermometer 411 and the second thermometer 421 respectively monitor the temperature in the first air pipe 41 and the second air pipe 42 in real time, when the temperature exceeds 110 ℃, the first temperature reducing valve 701 and/or the second temperature reducing valve 702 are/is manually or automatically opened, and the drain pump 71 acts to pump the water in the distilled water tank 5 into the first air pipe 41 or the second air pipe 42 for cooling. When the first level gauge 71 detects that the water level in the distilled water tank 5 exceeds a set value, the drain pump 71 and the drain valve 731 are actuated, and the water in the distilled water tank 5 is drained from the drain line 73 into the reuse water tub 92.

The concentration meter 25 detects the concentration of the liquid in the liquid storage chamber 211 in real time, and when the concentration of the liquid meets the requirement, the discharge pump 24 and the discharge valve 242 are actuated, and the liquid is discharged into the liquid recycling barrel 91 through the discharge pipe 241. The whole evaporation concentration process has no wastewater generation, no pollution and accords with the modern environmental protection idea, the recovered feed liquid can be used by the front section of an electroplating plant or a water treatment plant again, the recovered distilled water can be recycled, the resource recovery and reutilization are fully realized, and the method is suitable for popularization and use.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. An evaporative concentration apparatus, comprising: including PLC switch board, evaporimeter, vapour and liquid separator, circulating fan, distilled water jar and vacuum pump, the evaporimeter include a jar body, circulating pump and circulating line, the inside of jar body is separated into stock solution room, separation chamber and the evaporating chamber that sets gradually by supreme down through the division board, the stock solution indoor be equipped with the heating pipe that is used for heating the feed liquid, the inlet of circulating pump is linked together with the bottom of stock solution room, and the liquid outlet passes through circulating line is linked together with the evaporating chamber, the lateral wall upper portion of stock solution room is equipped with feed liquid import and hot gas outlet, feed liquid access connection inlet pipe, the inside of separation chamber is equipped with a plurality of stand pipes, the both ends of stand pipe are linked together with evaporating chamber and stock solution room respectively, and the lateral wall upper portion and the lower part of separation chamber are equipped with hot gas inlet and condensate water discharge port respectively, vapour and liquid separator, the other end through first gas-supply pipe with circulating fan's air inlet links to each other, circulating fan's gas outlet pass through the second gas-supply pipe with hot gas access connection, the condensate water discharge port through the condensate water discharge pipe with the distillation water pitcher links to each other, the top of distillation water pitcher is equipped with the vacuum port, the vacuum port pass through the pipeline with the vacuum pump links to each other, heating pipe, circulating pump, circulating fan and vacuum pump respectively with PLC switch board electric connection.

2. An evaporative concentration apparatus as set forth in claim 1 wherein: the water-saving and temperature-reducing device comprises a water draining pump, a first liquid level meter, a water draining pipeline and a temperature-reducing pipeline, wherein the first liquid level meter is arranged in the distilled water tank, a liquid inlet of the water draining pump is communicated with the bottom of the distilled water tank through a pipeline, a liquid outlet of the water draining pump is respectively connected with the water draining pipeline and the temperature-reducing pipeline, the water draining pipeline is connected to a recycling water bucket, a water draining valve is arranged on the water draining pipeline, the temperature-reducing pipeline comprises a first temperature-reducing pipeline and a second temperature-reducing pipeline which are connected in parallel, the first temperature-reducing pipeline is communicated with the first gas pipe, a first temperature-reducing valve is arranged on the first temperature-reducing pipeline, a first thermometer is arranged in the first gas pipe, the second temperature-reducing pipeline is communicated with the second gas pipe, a second temperature-reducing valve is arranged on the second temperature-reducing pipeline, and a, the draining pump, the draining valve, the first liquid level meter, the first cooling valve, the second cooling valve, the first thermometer and the second thermometer are respectively electrically connected with the PLC control cabinet.

3. An evaporative concentration apparatus as set forth in claim 2 wherein: the drainage cooling device further comprises a cooling water return pipe, one end of the cooling water return pipe is communicated with the bottom of the second gas conveying pipe, and the other end of the cooling water return pipe is communicated with the distilled water tank.

4. An evaporative concentration apparatus as set forth in claim 1 wherein: still include the pressure difference control tube, the one end of pressure difference control tube with first gas-supply pipe is linked together, the other end with the distillation water pitcher is linked together, the pressure difference control tube on be equipped with the pressure difference valve, first gas-supply pipe in be equipped with first vacuum gauge, the distillation water pitcher in be equipped with the second vacuum gauge, pressure difference valve, first vacuum gauge and second vacuum gauge respectively with PLC switch board electric connection.

5. An evaporative concentration apparatus as set forth in claim 1 wherein: the evaporimeter still include drainage pump, concentration meter and second level gauge install in the stock solution room, the inlet of drainage pump through arrange the material pipe with the bottom of stock solution room is linked together, the liquid outlet passes through pipe connection to feed liquid retrieval and utilization bucket, row arrange and be equipped with the relief valve on the material pipe, drainage pump, concentration meter, second level gauge and relief valve respectively with PLC switch board electric connection.

6. An evaporative concentration apparatus as set forth in claim 1 wherein: the gas-liquid separator comprises a transition tank and a gas-liquid separation tank, the top of the transition tank is connected with the top of the separation tank through a connecting pipe, the bottom of the transition tank and the bottom of the gas-liquid separation tank are respectively provided with a separated water return pipe, the separated water return pipes are connected to the liquid storage chamber, the lower portion of the side wall of the transition tank is connected with the hot gas outlet, the gas-liquid separation tank comprises an outer tank and an inner pipe arranged inside the outer tank, the upper end of the inner pipe is fixed at the upper end of the outer tank and is communicated with the connecting pipe, the lower end of the inner pipe is opened and extends to the lower portion of the outer tank, and the upper portion of the side wall of the outer tank.

7. An evaporative concentration apparatus as set forth in claim 1 wherein: the inside of stock solution room is equipped with the third thermometer that is used for monitoring feed liquid temperature, the third thermometer with PLC switch board electric connection.

8. An evaporative concentration apparatus as set forth in claim 1 wherein: and one end part of the circulating pipeline in the evaporation chamber is connected with a plurality of spray heads.

9. An evaporative concentration apparatus as set forth in claim 1 wherein: the condensed water discharge pipe is provided with a section of glass transparent pipe for observing the flow of condensed water, and the tank body and the gas-liquid separator are respectively provided with one to a plurality of transparent observation windows.

10. An evaporative concentration apparatus as set forth in claim 1 wherein: and a heat-insulating layer is coated outside the side wall of the tank body.