CN220758006U - Distilled water discharge device of MVR evaporator - Google Patents
Distilled water discharge device of MVR evaporator Download PDFInfo
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- CN220758006U CN220758006U CN202321474536.8U CN202321474536U CN220758006U CN 220758006 U CN220758006 U CN 220758006U CN 202321474536 U CN202321474536 U CN 202321474536U CN 220758006 U CN220758006 U CN 220758006U
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- distilled water
- buffer tank
- valve
- tank
- outlet
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 169
- 239000012153 distilled water Substances 0.000 title claims abstract description 138
- 239000007788 liquid Substances 0.000 claims abstract description 63
- 230000001502 supplementing effect Effects 0.000 claims abstract description 9
- 238000007599 discharging Methods 0.000 claims abstract description 7
- 238000005461 lubrication Methods 0.000 claims abstract description 6
- 239000013589 supplement Substances 0.000 abstract description 3
- 230000005484 gravity Effects 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model belongs to the technical field of MVR evaporators, and particularly relates to a distilled water discharging device of an MVR evaporator, which comprises a distilled water tank and a distilled water buffer tank, wherein the MVR evaporator comprises a compressor and a heat exchanger, an outlet of the compressor is connected with a steam inlet of the heat exchanger, a condensed water outlet of the heat exchanger is connected with the upper part of the distilled water tank, and a first outlet of the distilled water tank is connected with a lubrication water supplementing port of the compressor through a distilled water pump; the second outlet of the distilled water tank is connected with the water inlet of the distilled water buffer tank through a first valve, the water outlet of the distilled water buffer tank is connected with a second valve, the distilled water tank and the distilled water buffer tank are arranged side by side, and the second outlet of the distilled water tank, the water inlet of the distilled water buffer tank and the water outlet of the distilled water buffer tank are all arranged at the lower part. The liquid level change of the distilled water tank is caused by gravity self-flow of the liquid, and the liquid level change is slow and stable, so that the distilled water pump is not influenced to supplement water for the compressor.
Description
Technical Field
The utility model belongs to the technical field of MVR evaporators, and particularly relates to a distilled water discharge device of an MVR evaporator.
Background
MVR is an abbreviation for vapor mechanical recompression technique (mechanical vapor recompression). MVR is an energy saving technology that reuses the energy of secondary vapor generated by itself, thereby reducing the need for external energy. As the national importance of environmental protection is increased and the national environmental protection situation is increased, many sewage which cannot be treated by the traditional way is treated by adopting an MVR evaporator.
The prior MVR evaporator for treating sewage has the following defects: 1. as shown in fig. 1, the water supplementing mode of the compressor 3 of the existing small-sized skid-mounted MVR evaporator usually adopts a distilled water pump 5, the distilled water pump 5 is often used as one way for lubricating and supplementing water to the compressor 3, and one way is used for discharging distilled water, so that the distilled water supplementing amount often cannot reach the system set supplementing amount, and the system can be frequently warned and stopped after detecting, thereby causing unsmooth running of equipment and even failure of the equipment; 2. the MVR evaporator adopts two distilled water pumps 5, as shown in the prior patent application CN114031232a, one is used for lubrication and water replenishment for the compressor 3, and the other is used for discharging distilled water, especially for the small skid-mounted MVR evaporator, because of being limited by space and the size of the distilled water tank 1, the two distilled water pumps 5 can lead to the severe fluctuation of the liquid level of the distilled water tank 1 and because the distilled water temperature is higher, the two distilled water pumps are generally replaced by negative pressure pumps, the indirection leads to the two paths of water flow to fight for flow, and the distilled water replenishment amount often cannot reach the system set water replenishment amount. In addition, the cost of the distilled water pump 5 is high, the supply period is long, and once the distilled water pump 5 is damaged, the equipment can be stopped for a long time, so that the production efficiency is greatly influenced.
Disclosure of Invention
The utility model provides a distilled water discharge device of an MVR evaporator, which aims to solve the problem that in the prior art, lubrication and water supplementing of a compressor of the MVR evaporator are easy to fluctuate, so that equipment is not smooth to operate.
In order to solve the technical problems, the technical scheme adopted by the utility model is that the distilled water discharging device of the MVR evaporator comprises a distilled water tank and a distilled water buffer tank, wherein the MVR evaporator comprises a compressor and a heat exchanger, an outlet of the compressor is connected with a steam inlet of the heat exchanger, a condensed water outlet of the heat exchanger is connected with the upper part of the distilled water tank, and a first outlet of the distilled water tank is connected with a lubrication water supplementing port of the compressor through a distilled water pump;
the second outlet of the distilled water tank is connected with the water inlet of the distilled water buffer tank through a first valve, the water outlet of the distilled water buffer tank is connected with a second valve, the distilled water tank and the distilled water buffer tank are arranged side by side, and the second outlet of the distilled water tank, the water inlet of the distilled water buffer tank and the water outlet of the distilled water buffer tank are all arranged at the lower part.
Preferably, an air inlet is formed in the upper portion of the distilled water buffer tank, the air inlet of the distilled water buffer tank is connected with a three-way valve, the three-way valve is provided with an air inlet and an air outlet, the air inlet of the three-way valve is used for introducing compressed air into the distilled water buffer tank, and the air outlet of the three-way valve is communicated with the outside. When the liquid in the distilled water buffer tank needs to be discharged, the first valve is closed, the second valve is opened, and compressed air is introduced into the distilled water buffer tank through the air inlet of the three-way valve, so that the liquid in the distilled water buffer tank is greatly quickened to be emptied, and the discharge efficiency is improved.
Preferably, a low liquid level meter and a high liquid level meter are arranged in the distilled water buffer tank, when the liquid in the distilled water buffer tank reaches the high liquid level meter, the first valve is closed, and the second valve is opened; when the liquid in the distilled water buffer tank reaches the position of the low liquid level meter, the second valve is closed, and the first valve is opened. The automatic emptying of liquid can be realized by arranging the low liquid level meter and the high liquid level meter, and the liquid displacement between the low liquid level meter and the high liquid level meter is known, so that the capacity of the MVR evaporator can be known only by recording the emptying frequency.
Further, the low liquid level gauge and the high liquid level gauge are both floating ball liquid level gauges. Safe and reliable, and high measurement accuracy.
Further, the first valve and the second valve are two-way pneumatic angle seat valves, and the three-way valve is a three-way pneumatic angle seat valve. The control is convenient, the precision is high, and the cost is low.
The beneficial effects are that:
(1) According to the distilled water discharge device of the MVR evaporator, the liquid level change of the distilled water tank is mainly caused by gravity self-flow of liquid, the liquid level change is slow and stable, the distilled water pump is not influenced on water supplement of the compressor, and the distilled water discharge device is simple in structure, ingenious in design, convenient to control and low in cost;
(2) According to the distilled water discharging device of the MVR evaporator, the liquid levels in the distilled water tank and the distilled water buffer tank are monitored in real time through the low liquid level meter and the high liquid level meter, and according to the monitoring of the liquid levels, the automatic emptying of the liquid can be realized; the liquid displacement between the low liquid level meter and the high liquid level meter is known, so that the capacity of the MVR evaporator can be known only by recording the emptying frequency;
(3) The distilled water discharge device of the MVR evaporator can reduce one distilled water discharge pump and reduce the manufacturing cost of the MVR evaporator.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of distilled water discharge of a MVR evaporator of the background art;
FIG. 2 is a schematic diagram of a distilled water discharge device of the MVR evaporator of the present utility model;
in the figure: 1. the device comprises a distilled water tank, 2 parts of a distilled water buffer tank, 3 parts of a compressor, 4 parts of a heat exchanger, 5 parts of a distilled water pump, 6 parts of a first valve, 7 parts of a second valve, 8 parts of a three-way valve, 9 parts of a low liquid level meter, 10 parts of a high liquid level meter.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Examples
As shown in fig. 2, a distilled water discharging device of an MVR evaporator comprises a distilled water tank 1 and a distilled water buffer tank 2, wherein the MVR evaporator comprises a compressor 3 and a heat exchanger 4, an outlet of the compressor 3 is connected with a steam inlet of the heat exchanger 4, a condensed water outlet of the heat exchanger 4 is connected with the upper part of the distilled water tank 1, and a first outlet of the distilled water tank 1 is connected with a lubrication water supplementing port of the compressor 3 through a distilled water pump 5; the second export of the distilled water jar 1 is connected with the water inlet of the distilled water buffer jar 2 through the first valve 6, the outlet of the distilled water buffer jar 2 is connected with the second valve 7, the first valve 6 and the second valve 7 of this embodiment are two-way pneumatic angle seat valves, the distilled water jar 1 and the distilled water buffer jar 2 set up side by side, the second export of the distilled water jar 1, the water inlet of the distilled water buffer jar 2 and the outlet of the distilled water buffer jar 2 all set up in the lower part.
In order to accelerate the liquid evacuation in the distilled water buffer tank 2, improve emission efficiency, in this embodiment, the upper portion of distilled water buffer tank 2 is provided with the air inlet, the air inlet of distilled water buffer tank 2 is connected with three-way valve 8, this embodiment three-way valve 8 is three-way pneumatic angle seat valve, have air inlet and gas vent on the three-way valve 8, the air inlet of three-way valve 8 is used for letting in compressed air to distilled water buffer tank 2, the gas vent of three-way valve 8 communicates with the external world, when the liquid in the distilled water buffer tank 2 is required to be discharged, first valve 6 is closed, and the air inlet of three-way valve 8 is opened, lets in compressed air to distilled water buffer tank 2 through the air inlet of three-way valve 8, and the liquid in the distilled water buffer tank 2 empties rapidly.
In order to realize automatic emptying of the liquid, in this embodiment, a low liquid level meter 9 and a high liquid level meter 10 are arranged in the distilled water buffer tank 2, the low liquid level meter 9 and the high liquid level meter 10 in this embodiment are both floating ball liquid level meters, when the liquid in the distilled water buffer tank 2 reaches the high liquid level meter 10, the first valve 6 is closed, and the second valve 7 is opened; when the liquid in the distilled water buffer tank 2 reaches the position of the low level gauge 9, the second valve 7 is closed, and the first valve 6 is opened, so that the liquid displacement between the low level gauge 9 and the high level gauge 10 is known, and only the emptying frequency needs to be recorded, so that the capacity of the MVR evaporator can be known.
The working principle is as follows:
after the MVR evaporator is started, the first valve 6 is kept in an open state, the air inlet of the three-way valve 8 is kept in a closed state, the air outlet of the three-way valve 8 is kept in an open state, the second valve 7 is kept in a closed state, the distilled water pump 5 is kept in an open state, and the distilled water pump 5 continuously supplements water and lubricates the compressor 3;
with the continuous condensation of the heat exchanger 4, the condensed distilled water is discharged to the distilled water tank 1, the liquid level of the distilled water tank 1 rises, the liquid level of the distilled water buffer tank 2 also rises due to the opening state of the first valve 6, when the liquid level of the distilled water tank 1 reaches the position of the high liquid level meter 10, the first valve 6 is closed, the second valve 7 is opened, meanwhile, the air inlet of the three-way valve 8 is opened, compressed air is introduced into the distilled water buffer tank 2, under the action of the compressed air, distilled water in the distilled water buffer tank 2 is rapidly emptied, when the liquid level in the distilled water buffer tank 2 reaches the position of the low liquid level meter 9, the three-way valve 8 is adjusted to be communicated with the air outlet and the distilled water buffer tank 2, when the pressure in the distilled water buffer tank 2 is released, the second valve 7 is closed, and the first valve 6 is opened, and the distilled water in the distilled water tank 1 continuously enters the distilled water buffer tank 2 through self-flowing;
when the liquid level in the distilled water buffer tank 2 reaches the high level gauge 10, repeating the above process; since the distilled water displacement between the low level gauge 9 and the high level gauge 10 is known, the capacity of the MVR evaporator is known by only recording the frequency of the evacuation.
The present utility model is not limited to the above-mentioned embodiments, and any person skilled in the art, based on the technical solution of the present utility model and the inventive concept thereof, can be replaced or changed within the scope of the present utility model.
Claims (5)
1. A distilled water discharge device of an MVR evaporator, characterized in that: the distilled water discharging device comprises a distilled water tank (1) and a distilled water buffer tank (2), wherein the MVR evaporator comprises a compressor (3) and a heat exchanger (4), an outlet of the compressor (3) is connected with a steam inlet of the heat exchanger (4), a condensed water outlet of the heat exchanger (4) is connected with the upper part of the distilled water tank (1), and a first outlet of the distilled water tank (1) is connected with a lubrication water supplementing port of the compressor (3) through a distilled water pump (5);
the second outlet of the distilled water tank (1) is connected with the water inlet of the distilled water buffer tank (2) through a first valve (6), the water outlet of the distilled water buffer tank (2) is connected with a second valve (7), the distilled water tank (1) and the distilled water buffer tank (2) are arranged side by side, and the second outlet of the distilled water tank (1), the water inlet of the distilled water buffer tank (2) and the water outlet of the distilled water buffer tank (2) are all arranged at the lower part.
2. The distilled water discharge device of an MVR evaporator according to claim 1, wherein: the upper portion of distilled water buffer tank (2) is provided with the air inlet, the air inlet of distilled water buffer tank (2) is connected with three-way valve (8), have air inlet and gas vent on three-way valve (8), the air inlet of three-way valve (8) is used for letting in compressed air in distilled water buffer tank (2), the gas vent and the external intercommunication of three-way valve (8).
3. The distilled water discharge device of an MVR evaporator according to claim 1 or 2, characterized in that: a low liquid level meter (9) and a high liquid level meter (10) are arranged in the distilled water buffer tank (2), and when the liquid in the distilled water buffer tank (2) reaches the high liquid level meter (10), the first valve (6) is closed, and the second valve (7) is opened; when the liquid in the distilled water buffer tank (2) reaches the position of the low liquid level meter (9), the second valve (7) is closed, and the first valve (6) is opened.
4. A distilled water discharge device of an MVR evaporator according to claim 3, wherein: the low liquid level meter (9) and the high liquid level meter (10) are floating ball liquid level meters.
5. The distilled water discharge device of an MVR evaporator according to claim 2, wherein: the first valve (6) and the second valve (7) are two-way pneumatic angle seat valves, and the three-way valve (8) is a three-way pneumatic angle seat valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321474536.8U CN220758006U (en) | 2023-06-09 | 2023-06-09 | Distilled water discharge device of MVR evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321474536.8U CN220758006U (en) | 2023-06-09 | 2023-06-09 | Distilled water discharge device of MVR evaporator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220758006U true CN220758006U (en) | 2024-04-12 |
Family
ID=90616419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321474536.8U Active CN220758006U (en) | 2023-06-09 | 2023-06-09 | Distilled water discharge device of MVR evaporator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220758006U (en) |
-
2023
- 2023-06-09 CN CN202321474536.8U patent/CN220758006U/en active Active
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