CN219897059U - Boiling pot of vacuum low-temperature evaporator - Google Patents

Abstract

The utility model discloses a boiling tank of a vacuum low-temperature evaporator, which comprises an upper flange of the boiling tank, a middle section of the boiling tank and a lower flange of the boiling tank which are fixedly connected; a steam channel plate is arranged at the near upper end part of the middle section of the boiling tank; the edge of the steam channel plate is attached to the inner wall of the middle section of the boiling tank to form a distilled water empty receiving space; the steam channel plate is also provided with a bulge part, and the bulge part is provided with a channel for steam to pass through; the boiling tank is communicated with a treatment liquid internal circulation pipeline, a treatment liquid suction pipeline and a concentrated liquid discharge pipeline. According to the boiling tank of the vacuum low-temperature evaporator, the circulation pipeline in the treatment liquid can realize the circulation flow of the treatment liquid in the evaporator, so that the treatment liquid can be uniformly heated and evaporated, and the uniform treatment of the treatment liquid is realized.

Description

Boiling pot of vacuum low-temperature evaporator

Technical Field

The utility model relates to a boiling tank of a vacuum low-temperature evaporator, and belongs to the technical field of environmental protection equipment.

Background

The discharge of industrial wastewater causes serious environmental pollution, and in order to protect the environment, sewage discharge needs to be strictly controlled, and each enterprise generating industrial wastewater needs to discharge sewage to a special sewage treatment plant for treatment before the sewage is discharged, and the sewage treatment plant generally charges according to the treatment capacity, for example, one ton and thousands of yuan, so that the cost of the enterprise in sewage treatment is also greatly increased. The heat pump technology is an efficient and environment-friendly energy-saving technology, and can be widely applied to the industrial production fields of chemical industry, low-grade heat energy utilization, sea water desalination, sewage treatment and the like. Distilled water meeting the discharge standard can be extracted from sewage after the heat pump is evaporated and concentrated, the distilled water can be directly discharged, and the remaining concentrate is discharged to a sewage treatment plant for treatment, so that the sewage treatment cost of enterprises can be greatly reduced.

When the existing vacuum low-temperature evaporator is used for treating industrial wastewater as treatment fluid, the existing vacuum low-temperature evaporator needs to heat the industrial wastewater to distill water in the industrial wastewater, but the heating coil in the boiling tank is uneven in heating of working treatment fluid, so that the treatment fluid is unevenly treated, how to evenly heat the treatment fluid by the evaporator can be better, and all the treatment fluid can be better evaporated, so that the problem to be solved is solved.

Disclosure of Invention

The utility model aims to provide a boiling tank of a vacuum low-temperature evaporator, which enables treatment liquid to circularly flow during evaporation treatment through a circulation pipeline in the treatment liquid, so that working liquid can be heated more uniformly.

In order to solve the technical problems, the aim of the utility model is realized as follows:

the utility model relates to a boiling tank of a vacuum low-temperature evaporator, which comprises an upper flange of the boiling tank, a middle section of the boiling tank and a lower flange of the boiling tank which are fixedly connected; a steam channel plate is arranged at the near upper end part of the middle section of the boiling tank; the edge of the steam channel plate is attached to the inner wall of the middle section of the boiling tank to form a distilled water empty receiving space; the steam channel plate is also provided with a bulge part, and the bulge part is provided with a channel for steam to pass through;

the boiling tank is communicated with a treatment liquid internal circulation pipeline, a treatment liquid suction pipeline and a concentrated liquid discharge pipeline;

the treatment fluid internal circulation pipeline comprises a pneumatic diaphragm pump; one end of the pneumatic diaphragm pump is communicated with the first pipeline, and the other end of the pneumatic diaphragm pump is communicated with the second pipeline; the first pipeline is communicated with the boiling tank at the lower flange of the boiling tank; the second pipeline is communicated with the boiling tank at the middle section of the boiling tank.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: a window device is arranged on the boiling tank; the window device comprises a window fixing flange and a window movable flange which are fixed with the middle section of the boiling tank, and a transparent window positioned between the window fixing flange and the window movable flange; the transparent window is also provided with a window cleaning device; the middle section of the boiling tank is also provided with a cleaning bent pipe, one end of the cleaning bent pipe is connected with a liquid electromagnetic valve, and the other end of the cleaning bent pipe is close to the transparent window.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the window cleaning device comprises a rotating shaft, a rotating handle, a conical spring, a spring compression block, a steel bar, a tetrafluoro block and a step shaft; the two tetrafluoro blocks are positioned on two sides of the rotating shaft, are positioned between the two steel bars and are fixedly connected through screws; the conical spring is positioned at the end part of the rotating shaft, and the spring pressing block is fixed with the end part of the rotating shaft and limits the conical spring.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the inside in boiling jar middle section still is provided with boiling jar floater liquid level device and defoaming agent drain pipe, boiling jar floater liquid level device and defoaming agent drain pipe's one end all is provided with the Hertman connector.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the middle section of the boiling tank is internally provided with a flange with an elbow, and the flange with the elbow is communicated with a second pipeline.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the communication part of the first pipeline and the lower flange of the boiling tank is connected with a third pipeline through a tee joint, and a plastic ball valve is further arranged on the third pipeline.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: and the first pipeline is also provided with a three-way manual ball valve.

The beneficial effects of the utility model are as follows: according to the boiling tank of the vacuum low-temperature evaporator, the circulation pipeline in the treatment liquid can realize the circulation flow of the treatment liquid in the evaporator, so that the treatment liquid can be uniformly heated and evaporated, and the uniform treatment of the treatment liquid is realized.

Drawings

Fig. 1 is a block diagram of a vacuum cryogenic evaporator according to the present embodiment;

FIG. 2 is a block diagram of the boiling vessel;

FIG. 3 is a block diagram of another view of the boiling vessel;

FIG. 4 is an exploded view of the boiling tank;

FIG. 5 is a schematic cross-sectional view of a boiling tank;

FIG. 6 is an exploded view of the window cleaning apparatus;

FIG. 7 is a block diagram of a heating/cooling system;

FIG. 8 is a block diagram of a refrigeration system;

FIG. 9 is a block diagram of a heating system;

FIG. 10 is a schematic diagram of a process fluid internal circulation line, a process fluid suction line, and a concentrate discharge line;

fig. 11 is a structural view of a distilled water discharging system;

fig. 12 is a structural view of the casing.

The labels in the figures are illustrated below: 100-frames; 200-boiling tank; 201-a boiling tank upper flange; 202-the middle section of the boiling tank; 2021-a support base; 203-a boiling tank lower flange; 204-steam channel plate; 2041-bosses; 300-an electric control cabinet; 205-window mounting flange; 206-a transparent window; 207-window movable flange; 208-window cleaning means; 2081-a rotation axis; 2082-rotating handle; 2083-conical spring; 2084-spring compression block; 2085-steel bar; 2086-tetrafluoro block; 2087-step shaft; 209-flange with elbow; 210-a boiling tank floating ball liquid level device; 211-a defoamer liquid outlet pipe; 212-cleaning the bent pipe; 213-waterproof work light; 214-a vacuum pressure gauge; 215-stainless steel manual ball valve; 216-a fluid solenoid valve; 217-exhaust/suction pressure sensor; 218-a liquid level electrode sensor; 219-hessian connector; 401-pneumatic diaphragm pump; 402-a first line; 403-a second line; 404-a treatment fluid inlet line; 405-concentrate discharge line; 406-a three-way pneumatic ball valve; 407-three-way manual ball valve; 408-plastic ball valve; 409-third line; 501-a compressor; 502-heating coil; 503-a condenser; 504-a liquid storage tube; 505-drying the filter; 506-a thermal expansion valve; 507-condensing coil; 508-cooling coils; 509-throttle valve; 510-a safety relief valve; 511-a refrigeration solenoid valve; 512-liquid-viewing mirror; 513-refrigeration ball valve; 514-refrigeration manual ball valve; 515-compressor suction angle valve; 516-refrigerant condensate discharge line; 517—refrigerant condensing input line; 601-drainage pipe; 602-a vacuum pump; 603-a water storage tank; 604-water inlet pipe; 605-drain pipe; 606-cleaning the drain pipe.

Detailed Description

The utility model will be further described with reference to the drawings and specific examples.

The present utility model will be described in detail with reference to fig. 1 to 12. A vacuum low-temperature evaporator, as shown in figure 1, comprises a frame 100, and a boiling tank 200, an electric control cabinet 300, a treatment liquid internal circulation pipeline, a treatment liquid suction pipeline, a concentrated liquid discharge pipeline, a distilled water discharge system and a heating/cooling system which are fixedly arranged on the frame 100. The processing liquid circulation line allows the processing liquid in the boiling tank 200 to flow. The frame 100 is welded from square steel pipes.

Fig. 2 to 6 illustrate the boiling vessel of the vacuum cryogenic evaporator according to this embodiment in detail. The boiling pot 200 comprises a boiling pot upper flange 201, a boiling pot middle section 202 and a boiling pot lower flange 203 which are fixedly connected. Specifically, the upper boiling tank flange 201 is fixedly connected with the middle boiling tank section 202, the middle boiling tank section 202 and the lower boiling tank flange 203 through screws and nuts, and a stainless steel manual ball valve 215 is further arranged at the joint of the upper boiling tank flange 201 and the middle boiling tank section 202.

A steam channel plate 204 is arranged at the near upper end part of the middle section 202 of the boiling tank; the edge of the steam channel plate 204 is attached to and sealed with the inner wall of the middle section 202 of the boiling tank, so as to form a distilled water empty space. The steam channel plate 204 further has a protruding portion 2041 thereon, and the protruding portion 2041 has a channel for steam to pass therethrough.

Further, a window device is arranged on the boiling tank 200; the window device comprises a window fixing flange 205 and a window movable flange 207 which are fixed with the middle section 202 of the boiling tank, and a transparent window 206 positioned therebetween. The window fixing flange 205 and the window movable flange 207 are fixedly connected through seven-star handle screws. A transparent window 206 may be used to view the interior of the boiling vessel 200.

The transparent window 206 is further provided with a window cleaning device 208 for cleaning the transparent window 206. This is because the water mist is adhered to the transparent window 206 due to the evaporation inside the boiling tank 200, which affects the observation of the inside of the boiling tank 200.

Further, the window cleaning device 208 includes a rotating shaft 2081, a rotating handle 2082, a conical spring 2083, a spring pressing block 2084, a steel bar 2085, a tetrafluoro block 2086, and a step shaft 2087. Two tetrafluoro blocks 2086 are located on both sides of the rotating shaft 2081 and between the two steel bars 2085, and are fixedly connected by screws. The transparent window 206 is selected to be cleaned by a polytetrafluoroethylene block 2086 due to the corrosive nature of the industrial boiling water being treated inside the boiling tank 200. The twist grip 2081 is inserted through the rotation shaft 2081 and is located outside the boiling tank 200.

The conical spring 2083 is located at an end of the rotating shaft 2081, and the spring pressing block 2084 is fixed to the end of the rotating shaft 2081 and limits the conical spring 2083. By rotating the handle 2081, the tetrafluoro block 2086 contacting the transparent window 206 is driven to rotate, so that the transparent window 206 can be cleaned, and the inside of the boiling tank 200 can be seen clearly.

Further, the middle section 202 of the boiling tank is further provided with a cleaning elbow 212, one end of the cleaning elbow 212 is connected with a liquid electromagnetic valve 216, and the other end is close to the transparent window 206.

Further, a plurality of supporting seats 2021 are fixedly arranged on the side wall of the middle section 202 of the boiling tank, so as to fix the boiling tank 200 and the frame 100.

Further, a boiling tank floating ball liquid level device 210 and a defoaming agent liquid outlet pipe 211 are further disposed in the boiling tank middle section 202, and a hessian connector 219 is disposed at one end of the boiling tank floating ball liquid level device 210 and one end of the defoaming agent liquid outlet pipe 211. A float may be provided on the boiling tank float level device 210 to indicate the level of the treatment fluid. And if necessary, the defoamer is injected into the boiling tank 200 through the defoamer outlet pipe 211.

Further, a vacuum pressure gauge 214 is provided under the side wall of the boiling tank 200 for testing the pressure in the boiling tank 200.

Further, a waterproof working lamp 213 is further disposed on one side of the window device, for illuminating in case of poor light, so as to facilitate the observation of the situation in the boiling tank 200 through the transparent window 206.

The treatment fluid internal circulation pipeline comprises a pneumatic diaphragm pump 401; one end of the pneumatic diaphragm pump 401 is communicated with a first pipeline 402, and the other end is communicated with a second pipeline 403; the first pipeline 402 is communicated with the boiling tank 200 at the lower flange 203 of the boiling tank; the second line 403 communicates with the boiling tank 200 at the boiling tank midsection 202. One end of the first pipeline 402 is communicated with the boiling tank 200 through a flange plate at the bottom of the lower flange 203 of the boiling tank, so that the processing liquid in the boiling tank 200 can flow conveniently. A three-way manual ball valve 407 is provided in the first pipe 402, and a three-way pneumatic ball valve 406 is provided in the second pipe 403.

Further, a flange 209 with a bent pipe is further disposed in the middle section 202 of the boiling tank, and the flange 209 with a bent pipe is communicated with the second pipeline 403.

Further, a three-way manual ball valve 407 is further disposed on the first pipeline 402, for extracting a small amount of the treatment fluid for detection.

A third pipeline 409 is connected to the communication point between the first pipeline 402 and the lower flange 203 of the boiling tank through a tee joint, and a plastic ball valve 408 is further arranged on the third pipeline 409. In normal use, the plastic ball valve in the third line 409 is closed and is only opened when the boiling tank 200 is purged.

The process liquid suction line 404 and the concentrate discharge line 405 are both in communication with the boiling tank 200. Specifically, the treatment liquid suction line 404 communicates with the boiling tank 200 by communicating with the second line 403, and the concentrated liquid discharge line 405 communicates with the first line 402 to communicate with the boiling tank 200. And a three-way pneumatic ball valve 406 and a three-way manual ball valve 407 are arranged on the treatment liquid suction pipeline 404 and the concentrated liquid discharge pipeline 405

When the liquid level float switch installed on the boiling tank float level device 210 senses that the liquid level reaches the minimum liquid level, the valve on the treatment liquid suction pipeline 404 is opened, the treatment liquid is sucked into the boiling tank 200 by utilizing the vacuum in the boiling tank 200, and when the liquid level float switch reaches the working liquid level, the external treatment liquid stops sucking water, and the valve is closed.

When the concentrated solution is formed after the evaporation treatment of the treatment solution is finished and the concentrated solution is required to be discharged, a valve on the concentrated solution discharge pipeline 405 is opened, the concentrated solution is discharged through the pipeline by a pump, and according to the set discharge time, the pneumatic ball valve is automatically closed, so that the concentrated solution discharge is completed.

In order to prevent the dense treatment liquid from precipitating to the bottom of the boiling tank, only the treatment liquid having a small density and being thin is evaporated on the surface. When the liquid level of the treatment liquid reaches the set standard, the treatment liquid internal circulation pipeline starts to work, the treatment liquid is discharged from the first pipeline 402 through the work of the pneumatic diaphragm pump 401, and is refilled into the boiling tank 200 through the pneumatic diaphragm pump 401 and the second pipeline 403, so that the internal circulation of the treatment liquid is realized.

The heating/cooling system includes a compressor 501, a heating coil 502, a condenser 503, a liquid reservoir 504, and a condensing coil 507; the compressor 501 delivers heated gaseous refrigerant to a heating coil 502 for heating the treatment fluid. The heating coil 502 is located at the lower end of the boiling vessel midsection 202. The condensing coil 507 is sleeved at the position of the protruding part 2041.

The condenser 503 is used to cool the refrigerant exiting the heating coil 502; the refrigerant passing through the condenser 503 is delivered to the accumulator 504; the refrigerant in the liquid storage tank 504 is conveyed to the condensing coil 507 through the refrigerant condensing input pipeline 517 and is used for condensing the water vapor; the condensing coil 507 is connected with the compressor through a refrigerant condensing discharge line 516 and a compressor suction angle valve 515; the refrigerant condensate inlet line 517 is in communication with the inlet of the cooling coil 508 via a tee, and the refrigerant condensate outlet line 516 is in communication with the outlet of the cooling coil 508 via a tee.

Further, a safety relief valve 510 is disposed on a pipeline between the condenser 503 and the liquid storage tank 504, for preventing the pressure of the refrigeration system from being too high and releasing the pressure. A copper pipe is arranged between the air inlet pipe of the heating coil 502 and the liquid inlet pipe of the condensing coil 507, and a refrigeration electromagnetic valve 511 and a refrigeration ball valve 513 are arranged on the copper pipe and can be opened when the suction pressure is lower than 2bar for protecting the compressor.

Further, a drier-filter 505, a liquid-viewing mirror 512 and a thermal expansion valve 506 are arranged on the pipeline between the liquid storage tank 504 and the condensing coil 507. Dry filter 505 is used to absorb moisture and impurities in the refrigerant. The liquid mirror 512 is used to observe the refrigerant level and flow in the refrigeration system. The thermal expansion valve 506 is used to throttle and decompress, forming a low temperature and low pressure gaseous refrigerant.

The compressor 501 forms a low-temperature low-pressure gaseous refrigerant into a high-temperature high-pressure gaseous refrigerant, and conveys the high-temperature high-pressure gaseous refrigerant to the heating coil 502 to emit heat, and exchanges heat with the working fluid to heat and boil the treatment fluid to generate water vapor, and the generated water vapor enters the condensation chamber through the vapor channel plate 204. The high-temperature high-pressure gaseous refrigerant is changed into a normal-temperature high-pressure liquid refrigerant after heat exchange by the heating coil 502. The liquid state at normal temperature and high pressure is changed into a low-pressure low-temperature liquid refrigerant under the action of the condenser 503; low pressure, low temperature liquid refrigerant is delivered to the accumulator 504, which is the operation of the heating system.

The low-temperature low-pressure liquid refrigerant in the liquid storage tank 504 is delivered to the condensing coil 507, the low-temperature low-pressure liquid refrigerant in the condensing coil 507 exchanges heat with the water vapor, and absorbs heat in the water vapor, so that the water vapor is changed into distilled water, and the low-temperature low-pressure liquid refrigerant is changed into low-temperature low-pressure gaseous refrigerant to be delivered into the compressor 501 for recycling.

The low-temperature low-pressure liquid refrigerant in the liquid storage tank 504 enters the cooling coil 508 through the throttle valve 509 for cooling distilled water therein, absorbs heat in the distilled water through the cooling coil 508 to form low-temperature low-pressure gaseous refrigerant, and enters the compressor for recycling.

The distilled water discharging system comprises a vacuum pump 602 and a water storage tank 603; the vacuum pump 602 is connected with the water storage tank 603 through a water inlet pipe 604, the water inlet pipe 603 is communicated with the distilled water space through a drainage pipeline 601, and a check valve is further arranged on the drainage pipeline 601; the water storage tank 603 is also provided with a drain pipe 605. The cooling coil 508 is located in the water storage tank 603, and since the temperature of the distilled water drained from the space where the distilled water is empty, i.e., the condensing chamber, is still high, the temperature of the distilled water can be reduced and the low-temperature low-pressure liquid refrigerant in the cooling coil 508 can be changed into low-temperature low-pressure gaseous refrigerant when heat exchange is performed with the cooling coil 508.

Further, a three-way joint is connected to the bottom of the water storage tank 603, one end of the three-way joint is connected to the vacuum pump 602 through a plastic ball valve, the other end of the three-way joint is connected to the outside through a cleaning drain pipe 606 through a plastic ball valve, and a plastic ball valve is further arranged on the cleaning drain pipe 606, and is in a closed state during the operation of the vacuum low-temperature evaporator, and the three-way joint is opened when the water storage pipe is cleaned and drained.

The drainage pipe 601 is further provided with a plastic ball valve at one end close to the boiling tank 200.

Further, the vacuum low temperature evaporator further includes a cabinet 700, four corners of the cabinet 700 being chamfered. Chamfers are formed at the four corners, not in the form of right angles, so that bruising can be avoided.

The foregoing describes in detail preferred embodiments of the present utility model. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the utility model by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.

Claims (7)

1. The boiling tank of the vacuum low-temperature evaporator is characterized in that the boiling tank (200) comprises a boiling tank upper flange (201), a boiling tank middle section (202) and a boiling tank lower flange (203) which are fixedly connected; a steam channel plate (204) is arranged at the near upper end part of the middle section (202) of the boiling tank; the edge of the steam channel plate (204) is attached to the inner wall of the middle section (202) of the boiling tank to form a distilled water empty receiving space; the steam channel plate (204) is also provided with a protruding part (2041), and the protruding part (2041) is provided with a channel for steam to pass through;

the boiling tank (200) is communicated with a treatment liquid internal circulation pipeline, a treatment liquid suction pipeline (404) and a concentrated liquid discharge pipeline (405);

the treatment fluid internal circulation pipeline comprises a pneumatic diaphragm pump (401); one end of the pneumatic diaphragm pump (401) is communicated with a first pipeline (402), and the other end of the pneumatic diaphragm pump is communicated with a second pipeline (403); the first pipeline (402) is communicated with the boiling tank (200) at the lower flange (203) of the boiling tank; the second pipeline (403) is communicated with the boiling tank (200) at the middle section (202) of the boiling tank.

2. A vacuum cryogenic evaporator boiling vessel according to claim 1, characterized in that the boiling vessel (200) is provided with window means; the window device comprises a window fixing flange (205) and a window movable flange (207) which are fixed with the middle section (202) of the boiling tank, and a transparent window (206) positioned between the window fixing flange and the window movable flange; the transparent window (206) is also provided with a window cleaning device (208); the middle section (202) of the boiling tank is also provided with a cleaning bent pipe (212), one end of the cleaning bent pipe (212) is connected with a liquid electromagnetic valve (216), and the other end of the cleaning bent pipe is close to the transparent window (206).

3. The vacuum cryogenic evaporator boiling tank of claim 2, wherein the window cleaning device (208) comprises a rotating shaft (2081), a rotating handle (2082), a conical spring (2083), a spring compression block (2084), a steel bar (2085), a tetrafluoro block (2086), a step shaft (2087); the two tetrafluoro blocks (2086) are positioned on two sides of the rotating shaft (2081) and between the two steel bars (2085) and are fixedly connected through screws; the conical spring (2083) is located at the end of the rotating shaft (2081), and the spring pressing block (2084) is fixed with the end of the rotating shaft (2081) and limits the conical spring (2083).

4. The vacuum cryogenic evaporator boiling tank according to claim 1, wherein a boiling tank floating ball liquid level device (210) and a defoaming agent liquid outlet pipe (211) are further arranged in the middle section (202) of the boiling tank, and one ends of the boiling tank floating ball liquid level device (210) and the defoaming agent liquid outlet pipe (211) are respectively provided with a hessian connector (219).

5. A vacuum cryogenic evaporator boiling tank according to claim 1, characterized in that the interior of the boiling tank midsection (202) is further provided with a bent pipe flange (209), the bent pipe flange (209) being in communication with the second pipe (403).

6. A vacuum cryogenic evaporator boiling vessel according to claim 1, characterized in that the first pipe (402) is connected to the lower flange (203) of the boiling vessel by means of a tee joint to a third pipe (409), and that a plastic ball valve (408) is also arranged on the third pipe (409).

7. A vacuum cryogenic evaporator boiling vessel as claimed in claim 1, wherein the first conduit (402) is further provided with a three-way manual ball valve (407).