Low-power-consumption MVR multi-effect evaporator

Abstract

The low-power-consumption MVR multi-effect evaporator comprises an outer tank body and an inner tank body, a first leakage plate, a second leakage plate, a third leakage plate and a heater are sequentially arranged in the inner tank body from top to bottom, a steam heating cavity is formed between the third leakage plate and a reinforcer, and a liquid storage cavity is formed between the lower end face of the heater and the inner bottom face of the inner tank body; a liquid circulating device is arranged at the bottom of the liquid storage cavity of the inner tank body and above the first leakage plate; the inner tank body is provided with a liquid inlet pipe above the first bushing plate, the inner tank body is provided with a steam input pipe below the first bushing plate, and the outer end of the steam input pipe is provided with a filter assembly exposed out of the second through hole section; a heat preservation layer is fixedly arranged on the inner surface of the outer tank body, and an aerogel heat insulation layer is fixedly arranged on the inner surface of the heat preservation layer. According to the technical scheme, the structural design is reasonable, steam can be filtered, the stock solution contact area is greatly increased in the process that stock solution leaks down through the three layers of leakage plates, the evaporation efficiency is high, power consumption is low, and practicability is good.

Description

Technical Field

[0001] The invention relates to the technical field of evaporators, and in particular to a low-power consumption MVR multiple-effect evaporator. Background Art

[0002] MVR evaporator is a new type of high-efficiency and energy-saving evaporation equipment mainly used in the pharmaceutical industry. The equipment uses low-temperature and low-pressure steaming technology and clean energy to generate steam and separate the water in the medium. It is an internationally advanced evaporation technology and an upgraded product to replace traditional evaporators.

[0003] In actual use, due to the water distribution method and structural reasons, the water entering the evaporator shell of the existing MVR evaporator cannot be fully evaporated, causing a large amount of water to accumulate in the water storage chamber at the bottom of the evaporator, thereby resulting in low evaporation efficiency of the entire evaporator. Although the existing MVR evaporator has accelerated the evaporation efficiency by setting a motor-driven rotating part and an electric heating device, the power consumption is high; moreover, most of the existing MVR multi-effect evaporators do not have a filter component at the steam inlet, which is easy to bring some impurities in the steam into the evaporator. Long-term use is easy to cause the drug to be contaminated during evaporation, and the practicality is poor. Summary of the invention

[0004] In view of the shortcomings of the prior art, the object of the present invention is to provide a low-power consumption MVR multiple-effect evaporator with reasonable structural design, capable of filtering steam, high evaporation efficiency, low power consumption and good practicality.

[0005] To achieve the above-mentioned object, the present invention provides the following technical scheme: a low-power consumption MVR multi-effect evaporator, comprising an outer tank body and an inner tank body, wherein a first leak plate, a second leak plate, a third leak plate and a heater are sequentially arranged in the inner tank body from top to bottom, a plurality of first leak holes are arranged on the upper end surface of the first leak plate, a plurality of second leak holes are arranged on the upper end surface of the second leak plate, a plurality of third leak holes are arranged on the upper end surface of the third leak plate, the first leak holes are staggered with the second leak holes, and the second leak holes are staggered with the third leak holes; a steam heating chamber is arranged between the third leak plate and the intensifier, and a liquid storage chamber is arranged between the lower end surface of the heater and the inner bottom surface of the inner tank body; A liquid circulation device is provided at the bottom of the liquid storage cavity of the inner tank body and above the first leak plate; The inner tank body is provided with a liquid inlet pipe at a position above the first leak plate, the outer tank body is provided with a first through hole aligned with the liquid inlet pipe, and the outer end of the liquid inlet pipe is extended out of the first through hole; the inner tank body is provided with a steam input pipe at a position below the first leak plate, the outer tank body is provided with a second through hole aligned with the steam input pipe, and the outer end of the steam input pipe exposed from the second through hole is provided with a filter assembly; A heat preservation layer is fixedly arranged on the inner surface of the outer tank body, an aerogel heat insulation layer is fixedly arranged on the inner surface of the heat preservation layer, and the inner surface of the aerogel heat insulation layer is fixedly connected to the outer surface of the inner tank body.

[0006] The present invention is further configured as follows: a tank cover is detachably provided on the top of the outer tank body, a tank cover insulation layer is fixedly provided on the inner wall surface of the tank cover, a tank cover aerogel insulation layer is fixedly provided on the inner surface of the tank cover insulation layer, and a stainless steel inner layer is fixedly provided on the inner surface of the tank cover aerogel insulation layer; a discharge pipe is fixedly provided on the top of the stainless steel inner layer, a first pipe through hole is provided on the tank cover aerogel insulation layer aligned with the discharge pipe position, a second pipe through hole is provided on the tank cover insulation layer aligned with the first pipe through hole position, a third pipe through hole is provided on the tank cover aligned with the second pipe through hole position, and the outer end of the discharge pipe passes through the first pipe through hole, the second pipe through hole and the third pipe through hole in sequence.

[0007] The present invention is further configured as follows: the liquid circulation device includes a water pump, a first water pipe and a second water pipe, the water inlet of the water pump is connected to the upper end of the first water pipe, and the lower end of the first water pipe is communicated with the liquid storage cavity of the inner tank body; the inner tank body is provided with a water inlet at a position above the first leak plate, the water outlet of the water pump is connected to the lower end of the second water pipe, and the upper end of the second water pipe is communicated with the water inlet.

[0008] The present invention is further configured as follows: the filter assembly includes a filter screen and a sealing cover plate, the outer end of the steam inlet pipe exposes a second through hole section and is provided with a filter cavity, the filter screen is installed in the filter cavity, a sealing protrusion is integrally provided on the inner end surface of the sealing cover plate, the inner end surface of the sealing protrusion is fixedly connected to the filter screen, a sealing ring installation groove is provided on the sealing protrusion, a sealing ring is provided in the sealing ring installation groove, and the sealing cover plate is fixed to the steam inlet pipe by screw locking.

[0009] The present invention is further configured as follows: a drain pipe is fixedly provided at the bottom of the inner tank body, and the lower end of the drain pipe passes through the outer tank body and extends to below the outer tank body, and a first valve is installed at the lower end of the drain pipe.

[0010] The present invention is further configured as follows: a drain port is provided at the bottom end of the outer tank body, and a second valve is installed at the lower end of the drain port.

[0011] The beneficial effects of the present invention are as follows: compared with the prior art, the present invention has a reasonable structural design, the outer end of the liquid inlet pipe is connected to the raw liquid pipe, the steam input pipe is connected to the heating steam, the outer end of the steam input pipe exposes the second through hole section and is provided with a filter assembly, the filter assembly filters impurities in the steam through the filter screen; the intensifier performs secondary heating on the steam in the steam heating chamber; the inner tank body is provided with a first leak plate, a second leak plate, a third leak plate and a heater from top to bottom, the raw liquid enters the inner tank body through the liquid inlet pipe, and falls back to the bottom end of the inner tank body after passing through three layers of leak plates, and in the process of leaking from the leak hole, the contact area of ​​the raw liquid is greatly increased, so that the water vapor in the raw liquid is quickly evaporated and converted into water vapor during the flow of the raw liquid, and a part of the water in the raw liquid will directly enter the liquid storage chamber, and then circulate through the liquid circulation device, eliminating the transmission motor and the rotating parts driven by the motor, and the structural design is reasonable, the steam can be filtered, the evaporation efficiency is high, the power consumption is low and the practicability is good.

[0012] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of an embodiment of the present invention; Figure 2 It is a cross-sectional schematic diagram of an embodiment of the present invention. DETAILED DESCRIPTION

[0014] In the description of this embodiment, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "back", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore, cannot be understood as limiting the present invention. In addition, if the terms "first", "second", and "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0015] See also Figure 1 and Figure 2The present invention discloses a low-power consumption MVR multi-effect evaporator, comprising an outer tank body 1 and an inner tank body 2, wherein a first leak plate 21, a second leak plate 22, a third leak plate 23 and a heater 24 are sequentially arranged in the inner tank body 2 from top to bottom, a plurality of first leak holes 211 are arranged on the upper end surface of the first leak plate 21, a plurality of second leak holes 221 are arranged on the upper end surface of the second leak plate 22, a plurality of third leak holes 231 are arranged on the upper end surface of the third leak plate 23, the first leak holes 211 and the second leak holes 221 are staggered, and the second leak holes 221 and the third leak holes 231 are staggered; a steam heating chamber 25 is arranged between the third leak plate 23 and the intensifier 24, and a liquid storage chamber 26 is arranged between the lower end surface of the heater 24 and the inner bottom surface of the inner tank body 2; A liquid circulation device is provided at the bottom of the liquid storage chamber 26 of the inner tank body 2 and above the first leaking plate 21; The inner tank body 2 is provided with a liquid inlet pipe 3 at a position above the first leak plate 21, the outer tank body 1 is provided with a first through hole aligned with the liquid inlet pipe 3, and the outer end of the liquid inlet pipe 3 is extended out of the first through hole; the inner tank body 2 is provided with a steam input pipe 4 at a position below the first leak plate 21, the outer tank body 1 is provided with a second through hole aligned with the steam input pipe 4, and the outer end of the steam input pipe 4 exposed from the second through hole is provided with a filter assembly; A heat preservation layer 5 is fixedly provided on the inner surface of the outer tank body 1 , an aerogel heat insulation layer 6 is fixedly provided on the inner surface of the heat preservation layer 5 , and the inner surface of the aerogel heat insulation layer 6 is fixedly connected to the outer surface of the inner tank body 2 .

[0016] Preferably, in this embodiment, the first leak plate 21, the second leak plate 22, the third leak plate 23 and the heater 24 are all connected and fixed to the inner wall surface of the inner tank body 2 by screws or by connectors; the first leak plate 21, the second leak plate 22 and the third leak plate 23 are all made of stainless steel; the heater 24 is an electric heater. The outer tank body 1, the insulation layer 5, the aerogel insulation layer 6 and the inner tank body 2 are bonded together to form an integrated structure or are fixed by bolts; the insulation layer 5 is made of rock wool, glass wool or aluminum silicate. The aerogel insulation layer 6 is made of silicon dioxide aerogel.

[0017] In order to make the structural design of the present invention more reasonable, as a preferred embodiment, the top of the outer tank body 1 described in this embodiment is detachably provided with a tank cover 7, a tank cover insulation layer 71 is fixedly provided on the inner wall surface of the tank cover 7, a tank cover aerogel insulation layer 72 is fixedly provided on the inner surface of the tank cover insulation layer 71, and a stainless steel inner layer 73 is fixedly provided on the inner surface of the tank cover aerogel insulation layer 72; a discharge pipe 74 is fixedly provided on the top of the stainless steel inner layer 73, a first pipe through hole is provided on the tank cover aerogel insulation layer 72 aligned with the position of the discharge pipe 74, a second pipe through hole is provided on the tank cover insulation layer 71 aligned with the position of the first pipe through hole, a third pipe through hole is provided on the tank cover 7 aligned with the position of the second pipe through hole, and the outer end of the discharge pipe 74 passes through the first pipe through hole, the second pipe through hole and the third pipe through hole in sequence.

[0018] The outer tank body 1 and the inner tank body 2 are both made of stainless steel, and the top of the outer tank body 1 is fixed to the tank cover 7 by bolts.

[0019] The liquid circulation device includes a water pump 8, a first water pipe 9 and a second water pipe 10, the water inlet of the water pump 8 is connected to the upper end of the first water pipe 9, and the lower end of the first water pipe 9 is communicated with the liquid storage chamber 26 of the inner tank body 1; the inner tank body 2 is provided with a water inlet at a position above the first leak plate 21, the water outlet of the water pump 8 is connected to the lower end of the second water pipe 10, and the upper end of the second water pipe 10 is communicated with the water inlet.

[0020] The filter assembly includes a filter screen 11 and a sealing cover plate 12. The outer end of the steam inlet pipe 4 exposes a second through hole section and is provided with a filter chamber 41. The filter screen 11 is installed in the filter chamber 41. A sealing protrusion is integrally provided on the inner end surface of the sealing cover plate 12. The inner end surface of the sealing protrusion is fixedly connected to the filter screen 11. A sealing ring installation groove is provided on the sealing protrusion. A sealing ring is provided in the sealing ring installation groove. The sealing cover plate 12 is fixed to the steam inlet pipe 4 by screws.

[0021] A drain pipe 27 is fixedly provided at the bottom of the inner tank body 2 , and the lower end of the drain pipe 27 passes through the outer tank body 1 and extends to the bottom of the outer tank body 1 . A first valve 13 is installed at the lower end of the drain pipe 27 .

[0022] A drain port 14 is formed at the bottom of the outer tank body 1 , and a second valve 15 is installed at the lower end of the drain port 14 .

[0023] In actual application, the outer end of the liquid inlet pipe 3 is connected to the raw liquid pipe, the steam input pipe 4 is connected to the heating steam, the outer end of the steam input pipe 4 exposes the second through hole section and is provided with a filter assembly, and the filter assembly filters impurities in the steam through the filter screen 11; the intensifier 24 performs secondary heating on the steam in the steam heating chamber 25; the inner tank body 2 is provided with a first leak plate 21, a second leak plate 22, a third leak plate 23 and a heater 24 from top to bottom, the raw liquid enters the inner tank body 2 through the liquid inlet pipe 3, and falls back to the bottom end of the inner tank body after passing through the three layers of leak plates. In the process of leaking from the leak hole, the contact area of ​​the raw liquid is greatly increased, so that the water vapor in the raw liquid is quickly evaporated and converted into water vapor during the flow of the raw liquid. A part of the water in the raw liquid will directly enter the liquid storage chamber 26, and then circulate through the liquid circulation device, eliminating the transmission motor and the rotating parts driven by the motor. The structural design is reasonable, the steam can be filtered, the evaporation efficiency is high, the power consumption is low and the practicability is good.

[0024] The specific description of the present invention in the above embodiments is only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Technical engineers in this field may make some non-essential improvements and adjustments to the present invention based on the contents of the above invention, which fall within the scope of protection of the present invention.

Claims

1. A low power consumption MVR multiple effect evaporator, comprising an outer tank body (1) and an inner tank body (2), characterized in that : A first leak plate (21), a second leak plate (22), a third leak plate (23) and a heater (24) are sequentially arranged in the inner tank body (2) from top to bottom; a plurality of first leak holes (211) are arranged on the upper end surface of the first leak plate (21); a plurality of second leak holes (221) are arranged on the upper end surface of the second leak plate (22); a plurality of third leak holes (231) are arranged on the upper end surface of the third leak plate (23); the first leak holes (211) and the second leak holes (221) are arranged staggered, and the second leak holes (221) and the third leak holes (231) are arranged staggered; a steam heating chamber (25) is arranged between the third leak plate (23) and the intensifier (24); a liquid storage chamber (26) is arranged between the lower end surface of the heater (24) and the inner bottom surface of the inner tank body (2); A liquid circulation device is provided at the bottom of the liquid storage chamber (26) of the inner tank body (2) and above the first leaking plate (21); The inner tank body (2) is provided with a liquid inlet pipe (3) at a position above the first leak plate (21), the outer tank body (1) is provided with a first through hole aligned with the liquid inlet pipe (3), and the outer end of the liquid inlet pipe (3) is extended out of the first through hole; the inner tank body (2) is provided with a steam input pipe (4) at a position below the first leak plate (21), the outer tank body (1) is provided with a second through hole aligned with the steam input pipe (4), and the outer end of the steam input pipe (4) exposed from the second through hole is provided with a filter assembly; A heat-insulating layer (5) is fixedly provided on the inner surface of the outer tank body (1), an aerogel heat-insulating layer (6) is fixedly provided on the inner surface of the heat-insulating layer (5), and the inner surface of the aerogel heat-insulating layer (6) is fixedly connected to the outer surface of the inner tank body (2).

2. A low power consumption MVR multiple effect evaporator according to claim 1, characterized in that: A tank cover (7) is detachably provided on the top of the outer tank body (1); a tank cover insulation layer (71) is fixedly provided on the inner wall surface of the tank cover (7); a tank cover aerogel insulation layer (72) is fixedly provided on the inner surface of the tank cover insulation layer (71); a stainless steel inner layer (73) is fixedly provided on the inner surface of the tank cover aerogel insulation layer (72); a discharge pipe (74) is fixedly provided on the top of the stainless steel inner layer (73); a first pipe through hole is provided on the tank cover aerogel insulation layer (72) aligned with the discharge pipe (74); a second pipe through hole is provided on the tank cover insulation layer (71) aligned with the first pipe through hole; a third pipe through hole is provided on the tank cover (7) aligned with the second pipe through hole; and an outer end of the discharge pipe (74) passes through the first pipe through hole, the second pipe through hole and the third pipe through hole in sequence.

3. A low power consumption MVR multiple effect evaporator according to claim 2, characterized in that: The liquid circulation device comprises a water pump (8), a first water pipe (9) and a second water pipe (10); the water inlet of the water pump (8) is connected to the upper end of the first water pipe (9), and the lower end of the first water pipe (9) is communicated with the liquid storage chamber (26) of the inner tank body (1); the inner tank body (2) is provided with a water inlet at a position above the first leak plate (21), the water outlet of the water pump (8) is connected to the lower end of the second water pipe (10), and the upper end of the second water pipe (10) is communicated with the water inlet.

4. A low power consumption MVR multiple effect evaporator according to claim 3, characterized in that: The filter assembly comprises a filter screen (11) and a sealing cover plate (12); the outer end of the steam input pipe (4) is exposed to form a second through hole section and is provided with a filter cavity (41); the filter screen (11) is installed in the filter cavity (41); a sealing protrusion is integrally provided on the inner end surface of the sealing cover plate (12); the inner end surface of the sealing protrusion is fixedly connected to the filter screen (11); a sealing ring installation groove is provided on the sealing protrusion; a sealing ring is provided in the sealing ring installation groove; and the sealing cover plate (12) is fixed to the steam input pipe (4) by means of screws.

5. A low power consumption MVR multiple effect evaporator according to claim 4, characterized in that: A liquid discharge pipe (27) is fixedly provided at the bottom of the inner tank body (2), and the lower end of the liquid discharge pipe (27) passes through the outer tank body (1) and extends to below the outer tank body (1), and a first valve (13) is installed at the lower end of the liquid discharge pipe (27).

6. A low power consumption MVR multiple effect evaporator according to claim 5, characterized in that: A drainage port (14) is provided at the bottom end of the outer tank body (1), and a second valve (15) is installed at the lower end of the drainage port (14).

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