CN218089017U - Vacuum dehydrator - Google Patents

Abstract

The utility model discloses a vacuum dehydrator, it includes vertical arrangement's the casing that is the tube-shape, the last nozzle of casing is sealed, the top of casing is connected with the washing pipeline, be equipped with the purge valve on the washing pipeline, the upper portion of casing is equipped with the air vent, the lower part of casing is equipped with from the top down filter valve and the isolating valve of arranging in proper order, be connected with first pipeline and second pipeline on the casing between filter valve and the isolating valve, first pipeline and vacuum pump connection, be equipped with the suction valve on the first pipeline, be equipped with adjusting drain valve on the second pipeline, the upper portion of casing still is connected with the third pipeline, be equipped with the water intaking valve on the third pipeline. Its purpose is in order to provide a vacuum dehydration machine, and it can dewater the salt washing operation to the flow state ice to operation process labour saving and time saving, production efficiency are high.

Description

Vacuum dehydrator

Technical Field

The utility model relates to a high salt water treatment field especially relates to an equipment that is used for dehydrating and washing salt to flow state ice.

Background

The high-salinity wastewater is wastewater with total salt (NaCl as standard) mass fraction greater than 1%, and contains NaCl and Na ₂ SO ₄ 、CaSO ₄ The high salinity wastewater discharged in large quantity such as industrial wastewater, municipal sewage and the like directly causes the mineralization degree of the water quality of rivers to be improved, and brings more and more serious pollution to soil, surface water and underground water, thus endangering the ecological environment. The farmland is irrigated by using water with salt content and chloride ions which seriously exceed the standard for a long time, so that the secondary salinization of soil is more and more serious, the yield of crops is reduced, and the benefit is reduced year by year. The conductivity of the yellow river for detecting the water quality salt content index in the Qinghai origin is only 200 mu S/cm, when reaching the toe cap of the middle stream of the yellow river, the conductivity is increased to 800-1000 mu S/cm, and when reaching the Jinan and Dongying of the lower stream of the yellow river, the conductivity is as high as 1000-1500 mu S/cm. The increase of the hardness of the high-salinity underground water has certain harm to human health, and can also corrode industrial equipment and shorten the service life of the equipment. When the hardness of water is reduced, softening the water is costly, calcium chloride and magnesium softening waste liquid is discharged and then permeates into the ground to further pollute the ground water, so that the ground is pollutedThe water chloride and hardness increase again, forming a vicious circle.

In consideration of the requirement of environmental protection, the traditional mine drainage in the coal industry cannot continuously adopt a direct drainage mode because the salt content exceeds the standard, and the salt in water needs to be removed so as to be discharged. The treatment process commonly used by enterprises at present is membrane method + evaporation, and has the defects of large energy consumption, large maintenance amount, unstable operation and the like, and in addition, the equipment is easy to generate the problems of scaling, blockage, corrosion and the like. In addition to the above methods, there is also a method of removing salt in water by freezing and crystallizing high-salt water, in the method, the temperature of the high-salt water is reduced until ice crystals are separated out, the ice crystals are cleaned after being separated from the salt water, clean water is obtained after the clean ice crystals are melted, in the prior art, the ice crystals are fished out manually and cleaned to obtain clean ice crystals, and the subsequent process is time-consuming and labor-consuming, and the production efficiency is low.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a vacuum dehydrator, it can dewater and wash the salt operation to the flow state ice to operation process labour saving and time saving, production efficiency are high.

The utility model discloses vacuum dehydrator, the casing that is the tube-shape including vertical arrangement, the last nozzle of casing is sealed, the top of casing is connected with the washing pipeline, be equipped with the purge valve on the washing pipeline, the upper portion of casing is equipped with the air vent, the lower part of casing is equipped with from the top down filter valve and the isolation valve of arranging in proper order, be connected with first pipeline and second pipeline on the casing between filter valve and the isolation valve, first pipeline and vacuum pump connection, be equipped with the suction valve on the first pipeline, be equipped with the regulation drain valve on the second pipeline, the upper portion of casing still is connected with the third pipeline, be equipped with the water intaking valve on the third pipeline.

The utility model discloses vacuum dehydrator, wherein the casing is including the section of thick bamboo of straining that communicates each other and lower cavity, cavity fixed connection is in the below of straining an ice section of thick bamboo down, wash the pipe connection in the top of straining an ice section of thick bamboo, the position that washs the pipeline is connected with the washing shower nozzle on straining the end in an ice section of thick bamboo, the upper portion of straining an ice section of thick bamboo is connected with the third pipeline, the upper portion of straining an ice section of thick bamboo is equipped with the air vent, the upper end of cavity is equipped with the filter valve down, the lower extreme of cavity is equipped with the isolating valve down, first pipeline and second tube coupling are on cavity down, first pipeline and second pipeline all are located between filter valve and the isolating valve with the junction of cavity down.

The utility model discloses vacuum dehydrator, wherein material sensor is installed at the top in straining an ice section of thick bamboo.

The utility model discloses vacuum dehydrator, wherein wash the shower nozzle including the shower nozzle body that is the tubbiness, the internal diameter of shower nozzle body diminishes from the barrel head to the bung hole gradually, the fixed backup pad that is equipped with in bung hole department of shower nozzle body, the edge of backup pad is equipped with the discharge orifice, the bucket intracavity of shower nozzle body is equipped with the shutoff board, the shutoff board is located the below of backup pad, be connected with the spring between shutoff board and the backup pad, the barrel head of shower nozzle body is equipped with the orifice, the bung hole fixed connection of shower nozzle body is on the tip that is located the ice filter section of thick bamboo of washing the pipeline.

The utility model discloses vacuum dehydrator, wherein the upper end fixed connection of spring is in the bottom surface middle part of backup pad, the lower extreme fixed connection of spring is at the top surface middle part of shutoff board, the periphery of spring is equipped with the sleeve, telescopic upper end fixed connection is at the bottom surface middle part of backup pad, telescopic lower extreme fixed connection is at the top surface middle part of shutoff board, the sleeve adopts elasticity waterproof material to make.

The utility model discloses vacuum dehydrator, wherein the edge of shutoff board is equipped with the sealing washer.

The utility model discloses vacuum dehydrator, wherein fixedly connected with screw thread section of thick bamboo on the bung hole of shower nozzle body, screw thread section of thick bamboo threaded connection is on the tip that is located of washing pipeline and strains an ice section of thick bamboo.

The utility model discloses vacuum dehydration machine and prior art difference lie in the utility model discloses when using, make flow state ice (the mixture of ice crystal and salt solution) enter into vacuum dehydration machine's casing through the third pipeline, dewater and wash salt, flow state ice is annotated and is filled vacuum dehydration machine and stop annotating ice, and the salt solution in the flow state ice flows down and discharges through the second pipeline through the filter valve, and the ice crystal integument is filtered out and is stayed in vacuum dehydration machine. And then opening a cleaning valve to clean the ice crystals in the vacuum dehydrator, after the cleaning valve is stopped, opening a vacuum pump to suck and discharge the ice crystal interstitial water in the vacuum dehydrator (namely, the interstitial water is sucked to the lower part of the vacuum dehydrator through the vacuum pump and then is discharged through a second pipeline), after the cleaning water is emptied, closing the vacuum pump, opening an isolation valve to discharge the bottom water (namely, the bottommost water) in the vacuum dehydrator, then opening a filter valve to discharge the ice crystals in the vacuum dehydrator, and after the ice crystals are discharged, closing the filter valve and the isolation valve. Just can obtain clean ice crystal through above operation, the ice crystal melts the back and obtains clean water, from this visible, the utility model discloses can dewater and wash the salt operation to flow state ice to operation process labour saving and time saving, production efficiency are high.

The present invention will be further explained with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic view showing a water treatment system using the vacuum dehydrating apparatus of the present invention;

FIG. 2 is a schematic diagram of a refrigeration unit of the water treatment system of FIG. 1;

FIG. 3 is a diagram showing the relative positions of the vacuum dehydrator, distributor, brine tank and ice-melting recovery tank in the water treatment system shown in FIG. 1;

FIG. 4 is a first view of the vacuum dehydrator of the present invention;

FIG. 5 is a second view showing the operation state of the vacuum dewatering apparatus of the present invention;

FIG. 6 is a third view showing the operation state of the vacuum dehydrator of the present invention;

FIG. 7 is a fourth view showing the operation state of the vacuum dehydrator of the present invention;

FIG. 8 is a fifth view showing the operation state of the vacuum dehydrator of the present invention;

FIG. 9 is a schematic structural view of the vacuum dehydrator of the present invention;

FIG. 10 is a schematic view of the internal structure of the vacuum dewatering apparatus of the present invention;

FIG. 11 is a front view of a first embodiment of a dispenser of the water treatment system of FIG. 1;

FIG. 12 is a right side view of FIG. 11;

FIG. 13 is a top view of the diverter plate of FIG. 11;

FIG. 14 is a diagram illustrating a first embodiment of a dispenser in the water treatment system shown in FIG. 1;

FIG. 15 is a schematic view showing the structure of a second embodiment of the distributor in the water treatment system shown in FIG. 1;

FIG. 16 is a front view of the cleaning nozzle of the present invention;

fig. 17 is a top view of the cleaning nozzle of the present invention;

fig. 18 is a bottom view of the cleaning nozzle of the present invention;

fig. 19 is a front cross-sectional view of the cleaning head of the present invention when closed;

fig. 20 is a front sectional view of the cleaning head of the present invention when it is opened.

Detailed Description

As shown in fig. 9, and combine fig. 10 to show, the utility model discloses vacuum dehydrator, the casing that is the tube-shape including vertical arrangement, the last nozzle of casing is sealed, the top of casing is connected with washing pipeline 32, be equipped with cleaning valve 33 on the washing pipeline 32, the upper portion of casing is equipped with the air vent, the lower part of casing is equipped with from the top down filter valve 39 and isolation valve 40 that arrange in proper order, be connected with first pipeline 11 and second pipeline 18 on the casing between filter valve 39 and the isolation valve 40, first pipeline 11 is connected with vacuum pump 12, be equipped with suction valve 42 on the first pipeline 11, be equipped with adjusting drain valve 41 on the second pipeline 18, the upper portion of casing still is connected with third pipeline 8, be equipped with water intaking valve 36 on the third pipeline 8.

As shown in fig. 9 and with reference to fig. 10, the housing includes an ice filter cylinder 37 and a lower cavity 38 that are communicated with each other, the lower cavity 38 is fixedly connected below the ice filter cylinder 37, the cleaning pipeline 32 is connected to the top of the ice filter cylinder 37, an end of the cleaning pipeline 32 located in the ice filter cylinder 37 is connected to the cleaning nozzle 35, the upper portion of the ice filter cylinder 37 is connected to the third pipeline 8, the vent hole is formed in the upper portion of the ice filter cylinder 37, the upper end of the lower cavity 38 is provided with a filter valve 39, the lower end of the lower cavity 38 is provided with an isolation valve 40, the first pipeline 11 and the second pipeline 18 are connected to the lower cavity 38, and joints between the filter valve 39 and the isolation valve 40 of the first pipeline 11 and the second pipeline 18 and the lower cavity 38 are located.

As shown in fig. 9, in conjunction with fig. 10, a material sensor 34 is mounted on the top inside the ice filter cartridge 37. The material sensor 34 is used to detect whether the material (i.e., the fluid ice) is filled in the entire vacuum dehydrator casing.

As shown in fig. 16 and fig. 17 to 20, the cleaning nozzle 35 includes a nozzle body 60 in a barrel shape, an inner diameter of the nozzle body 60 gradually decreases from a bottom of the barrel to a top of the barrel, a supporting plate 63 is fixedly disposed at the top of the nozzle body 60, an overflowing hole 62 is disposed at an edge of the supporting plate 63, a blocking plate 67 is disposed in a barrel cavity of the nozzle body 60, the blocking plate 67 is disposed below the supporting plate 63, a spring 66 is connected between the blocking plate 67 and the supporting plate 63, a spraying hole 64 is disposed at the bottom of the nozzle body 60, and the top of the nozzle body 60 is fixedly connected to an end of the cleaning pipeline 32 disposed in the ice filter barrel 37.

As shown in fig. 19 and 20, when the cleaning nozzle 35 is not used, the spring 66 has a pre-tightening tension, and under the tension of the spring 66, the blocking plate 67 is tightly attached to the inner wall of the barrel cavity of the nozzle body 60, so that the barrel cavity is divided into an upper space and a lower space which are sealed and isolated from each other. When the cleaning nozzle 35 is used, water enters the barrel cavity of the nozzle body 60 from the overflowing hole 62 of the supporting plate 63, then under the action of water pressure, the water pushes the blocking plate 67 to move downwards (at the moment, the spring 66 stretches), because the inner diameter of the barrel cavity is gradually increased from top to bottom, when the blocking plate 67 moves downwards, an annular gap appears between the blocking plate 67 and the barrel cavity, the annular gap is communicated with the upper space and the lower space of the barrel cavity, and then the water enters the lower space from the upper space of the barrel cavity through the annular gap and then is sprayed out from the spraying holes 64 at the bottom of the barrel. After the water spraying is finished, the water source is closed, the water pressure disappears, and the blocking plate 67 moves upwards under the action of the pulling force of the spring 66 until the blocking plate is tightly attached to the inner wall of the barrel cavity again (at the moment, the spring 66 is restored). Thus, foreign materials such as dust can be prevented from entering the pipe through the cleaning head 35 and causing clogging.

As shown in fig. 19 and 20, the upper end of the spring 66 is fixedly connected to the middle of the bottom surface of the supporting plate 63, the lower end of the spring 66 is fixedly connected to the middle of the top surface of the blocking plate 67, a sleeve 65 is arranged on the periphery of the spring 66, the upper end of the sleeve 65 is fixedly connected to the middle of the bottom surface of the supporting plate 63, the lower end of the sleeve 65 is fixedly connected to the middle of the top surface of the blocking plate 67, and the sleeve 65 is made of elastic waterproof material. Because the upper end fixed connection of sleeve 65 is in the bottom surface middle part of backup pad 63, and overflowing hole 62 establishes at the edge of backup pad 63, then the rivers that enter into the bucket chamber from overflowing hole 62 only can flow in the outside of sleeve 65, like this under the protection of sleeve 65, spring 66 can not take place the contact with rivers to can prevent that spring 66 from being corroded by rivers, extension spring 66's life.

As shown in fig. 19 and 20, a sealing ring 68 is provided at an edge of the blocking plate 67, which can further enhance the sealing performance between the blocking plate 67 and the inner wall of the barrel chamber of the nozzle body 60.

As shown in fig. 19 and 20, a threaded cylinder 61 is fixedly connected to the opening of the nozzle body 60, and the threaded cylinder 61 is screwed to the end of the cleaning pipeline 32 located in the ice filter cylinder 37. Of course, the nozzle body 60 may be connected to the end of the cleaning pipe 32 by other connection methods, such as welding, interference fit, etc.

The utility model discloses when using, make flow state ice (the mixture of ice crystal and salt solution) enter into the casing of vacuum dehydration machine through third pipeline 8, dewater and wash salt, flow state ice is annotated the vacuum dehydration machine and is stopped annotating ice, and the salt water in the flow state ice flows down and discharges through second pipeline 18 through filtering valve 39, and the ice crystal quilt is filtered out and is stayed in the vacuum dehydration machine. Then opening the cleaning valve 33 to clean the ice crystal in the vacuum dehydrator, after stopping the cleaning valve 33, opening the vacuum pump 12 to suck and discharge the interstitial water of the ice crystal in the vacuum dehydrator (i.e. the interstitial water is sucked to the lower part of the vacuum dehydrator by the vacuum pump 12 and then is discharged by the second pipeline 18), after the cleaning water is exhausted, closing the vacuum pump 12, opening the isolation valve 40 to completely discharge the bottom water (i.e. the bottommost water) in the vacuum dehydrator, then opening the filter valve 39 to discharge the ice crystal in the vacuum dehydrator, and after the ice crystal is discharged, closing the filter valve 39 and the isolation valve 40. Just can obtain clean ice crystal through above operation, the ice crystal melts the back and obtains clean water, from this visible, the utility model discloses can dewater and wash the salt operation to flow state ice to operation process labour saving and time saving, production efficiency are high.

To explain the structure and operation principle of the present invention in more detail, the following description will take the water treatment system using the present invention as an example.

As shown in figure 1, and as shown in combination with figures 2-15, the water treatment system of the present invention comprises a freezing crystal separator 13, a dehydrator 15, a refrigerating unit, a distributor 19, a brine tank 29 and an ice-melting recovery tank 21, wherein the brine tank 29 is connected with the inlet of the freezing crystal separator 13 through a fifth pipeline 17, a water feeding pump 30 is arranged on the fifth pipeline 17, and the upper outlet of the freezing crystal separator 13 is connected with a vacuum dehydrator 9 through a third pipeline 8. The vacuum dehydrator 9 includes a vertically arranged cylindrical housing, an upper opening of the housing is sealed, and a lower opening serves as a lower outlet of the vacuum dehydrator 9. A fourth pipeline 10 is connected between the top of the shell and the ice melting recovery tank 21, a cleaning pump 26 is arranged on the fourth pipeline 10, a cleaning pipeline 32 is further connected to the fourth pipeline 10, a cleaning valve 33 is arranged on the cleaning pipeline 32, that is, the top of the shell is also connected with the cleaning pipeline 32. The upper part of the shell is provided with a vent hole, the lower part of the shell is provided with a filter valve 39 and an isolation valve 40 which are sequentially arranged from top to bottom, a first pipeline 11 and a second pipeline 18 are connected to the shell between the filter valve 39 and the isolation valve 40, the first pipeline 11 is connected with the vacuum pump 12, and the second pipeline 18 is connected to the brine tank 29. The upper part of the shell is also connected with a third pipeline 8, and a water inlet valve 36 is arranged on the third pipeline 8. The exit is equipped with tripper 19 in vacuum dehydration machine 9's lower exit, tripper 19 sets up between brine tank 29 and ice-melt accumulator 21, tripper 19 can be discharged brine tank 29 or ice-melt accumulator 21 from vacuum dehydration machine 9 lower exit, the lower export of freezing crystallizer 13 is through the access connection of sixth pipeline 16 with dehydrator 15, dehydrator 15's delivery port is connected with brine tank 29 through seventh pipeline 31, be connected with refrigerating unit between freezing crystallizer 13 and the ice-melt accumulator 21, refrigerating unit's evaporimeter 14 is located freezing crystallizer 13, refrigerating unit's condenser 20 is located ice-melt accumulator 21.

A level sensor 59 in the brine tank 29 for measuring the level of brine, the level of brine tank 29 having a maximum level and a minimum level, and the replenishment of brine into the brine tank 29 being stopped when the level of brine reaches or exceeds the maximum level; conversely, when the level of brine reaches or falls below a minimum level, it is desirable to replenish the brine tank 29 with brine.

The dehydrator 15 belongs to the prior art, an inlet, a water outlet and a discharge port are arranged on the dehydrator 15, the water-containing materials enter the dehydrator 15 from the inlet, after dehydration, the dried materials are discharged from the discharge port, and the water separated from the materials is discharged from the water outlet.

It should be noted that, the refrigeration unit belongs to the prior art, and includes a compressor 7, a condenser 20, an expansion valve 1 and an evaporator 14, where the compressor 7, the condenser 20, the expansion valve 1 and the evaporator 14 are connected by a pipeline to form a refrigeration loop, and the specific refrigeration principle is not described herein again. The freezing crystallizer 13 is also a prior art, and comprises a cavity structure, the cavity structure is used for containing high-salt water, an upper outlet is arranged at the upper end of the cavity structure, an inlet is arranged at the middle part of the cavity structure, and a lower outlet is arranged at the lower end of the cavity structure.

As shown in figure 1, use the utility model discloses a water treatment system is in the during operation, carry to freezing crystallizer 13 in with the high salt water in the brine tank 29 through feed pump 30, in freezing crystallizer 13, the heat exchange takes place for the refrigerant in the evaporimeter 14 of high salt water and refrigerating unit, the refrigerant absorbs the heat in the high salt water promptly, the high salt water emits the heat in freezing crystallizer 13, the temperature is fallen to the freezing point of water, the water crystallization in the high salt water is separated out and is become ice, salt content in the high salt water rises to plumping until, the high salt water continues to cool down to salt at freezing crystallizer 13, when the water eutectic point, have ice and crystal salt to separate out in freezing crystallizer 13 simultaneously. Because the density of ice and crystal salt is different, the density of ice crystal is less than that of brine, and the ice crystal floats upwards and is discharged from an outlet of the freezing and crystallizing device 13 as fluid ice (the water content is 40-50%); the density of the salt crystal is larger than that of the brine, the salt crystal sinks, the salt crystal is discharged to the dehydrator 15 from the lower outlet of the freezing crystallizer 13 in a mixture flow state of the brine and the crystal salt, the crystal salt and the brine are separated in the dehydrator 15, the dehydrated salt is collected in a centralized manner, and the separated brine flows back to the brine tank 29. The flow state ice flowing out from the upper outlet of the freezing crystal separator 13 enters the vacuum dehydrator 9 for dehydration and salt washing, the vacuum dehydrator 9 is filled with the flow state ice to stop injecting the ice, the saline water in the flow state ice flows down through the meshes of the filter valve 39 and is discharged to the brine tank 29 through the second pipeline 18, and the ice crystals are filtered out and left in the vacuum dehydrator 9. Then, the cleaning pump 26 is turned on to clean the ice crystals in the vacuum dehydrator 9, after the cleaning pump 26 is turned off, the vacuum pump 12 is turned on to suck and discharge the ice crystal gap water in the vacuum dehydrator 9 (i.e., the gap water is sucked to the lower part of the vacuum dehydrator 9 by the vacuum pump 12 and then is discharged to the brine tank 29 by the second pipeline 18), after the cleaning water is evacuated, the vacuum pump 12 is turned off, the distributor 19 is opened to the brine tank 29 side, the isolation valve 40 is opened to drain the bottom water (i.e., the bottommost water) in the vacuum dehydrator 9, then the distributor 19 is opened to the ice-melting recovery tank 21 side, the filter valve 39 is opened to discharge the ice in the vacuum dehydrator 9 into the ice-melting recovery tank 21, and the ice is discharged after heat exchange is performed by the condenser 20 of the refrigerating unit (i.e., the ice absorbs heat of the refrigerating working medium in the condenser 20 to become water), and reaches the class iii surface water discharge standard. Therefore, the water treatment system has the advantages of low energy consumption, convenient maintenance and stable operation.

As shown in fig. 1, a water supply pipe 23 is connected to the brine tank 29, a de-icing device 27 and a cold recovery device 24 are connected to the water supply pipe 23, and both the de-icing device 27 and the cold recovery device 24 are located in the de-icing recovery tank 21. The ice melting device 27 and the cold recoverer 24 are both heat exchangers, the water supply pipe 23 is used for supplementing high brine into the brine tank 29, and when the high brine flows through the cold recoverer 24 and the ice melting device 27, the high brine exchanges heat with ice and/or water in the ice melting recovery tank 21, that is, the high brine transfers heat to the ice and/or water in the ice melting recovery tank 21.

As shown in fig. 1 and with reference to fig. 2, a recooling device and a low-temperature recooling device 2 are sequentially connected to a pipeline between a condenser 20 and an expansion valve 1 of a refrigeration unit, the recooling device and the low-temperature recooling device 2 are sequentially arranged along a direction from the condenser 20 to the expansion valve 1, the recooling device comprises a recooling compressor 5, a recooling condenser 4, a recooling expansion valve 3 and a recooling evaporator 6 which are sequentially connected, the recooling compressor 5, the recooling condenser 4, the recooling expansion valve 3 and the recooling evaporator 6 are connected to form a refrigeration loop, and the recooling evaporator 6 is connected to a pipeline between the condenser 20 and the expansion valve 1 of the refrigeration unit. The cold compensator is a refrigeration loop formed by connecting a cold compensation compressor 5, a cold compensation condenser 4, a cold compensation expansion valve 3 and a cold compensation evaporator 6, and the refrigeration principle is not described in detail. When flowing through the cold compensation evaporator 6, the refrigerant in the cold compensator exchanges heat with the refrigerant in the refrigerating unit, that is, the refrigerant in the cold compensator absorbs the heat of the refrigerant in the refrigerating unit. The structure of the low-temperature recooler 2 is an air-cooled heat exchanger, when the refrigerating medium in the refrigerating unit flows through the low-temperature recooler 2, the fan drives the air to flow through the low-temperature recooler 2 to exchange heat with the refrigerating medium in the refrigerating unit, namely the air absorbs the heat of the refrigerating medium in the refrigerating unit.

As shown in fig. 3 and shown in fig. 4-10, the casing of the vacuum dehydrator 9 of the present invention includes an ice filtering cylinder 37 and a lower cavity 38 which are mutually communicated, the ice filtering cylinder 37 and the lower cavity 38 are both cylindrical, the lower cavity 38 is fixedly connected below the ice filtering cylinder 37, the top of the ice filtering cylinder 37 is sealed, and the lower outlet of the lower cavity 38 is the lower outlet of the vacuum dehydrator 9. Fourth pipeline 10 connects in the top of straining an ice section of thick bamboo 37, be connected with washing shower nozzle 35 on the end that is located in straining an ice section of thick bamboo 37 of fourth pipeline 10, because wash pipeline 32 and connect on fourth pipeline 10, both unite two into one and extend to in straining an ice section of thick bamboo 37, consequently, also can say that wash pipeline 32 and connect in the top of straining an ice section of thick bamboo 37, wash being connected with washing shower nozzle 35 on the end that is located in straining an ice section of thick bamboo 37 of pipeline 32. When the cleaning pump 26 works, the water in the ice melting recovery tank 21 can be conveyed into the vacuum dehydrator 9 through the fourth pipeline 10, so as to clean the ice crystals in the vacuum dehydrator 9. Besides the ice melting recovery tank 21 as a cleaning water source, other cleaning water sources can be connected through the cleaning pipeline 32. The upper portion of straining an ice section of thick bamboo 37 is connected with third pipeline 8, be equipped with water intaking valve 36 on the third pipeline 8, the upper portion of straining an ice section of thick bamboo 37 is equipped with the air vent, material sensor 34 is installed at the top in straining an ice section of thick bamboo 37, the upper end of cavity 38 is equipped with filter valve 39 down, the lower extreme of cavity 38 is equipped with isolating valve 40 down, first pipeline 11 and second pipeline 18 are connected on cavity 38 down, the junction of first pipeline 11 and second pipeline 18 and cavity 38 down all is located between filter valve 39 and the isolating valve 40. The first pipeline 11 is provided with an air suction valve 42, the second pipeline 18 is provided with a water adjusting and draining valve 41, and the distributor 19 is positioned at the lower outlet of the lower cavity 38.

As shown in fig. 1 and in combination with fig. 3-8, the brine tank 29 and the ice-melting recovery tank 21 are fixedly connected, and the dispenser 19 is arranged at the joint of the brine tank 29 and the ice-melting recovery tank 21. The ice melting recovery tank 21 is internally provided with a first tank 28, a second tank 25 and a third tank 22 which are communicated with each other, the first tank 28, the second tank 25 and the third tank 22 are sequentially arranged from near to far relative to a brine tank 29, the distributor 19 can discharge materials coming out from a lower outlet of the lower cavity 38 into the brine tank 29 or the first tank 28, the third tank 22 is provided with a clear water outlet, the cold recoverer 24 on the water supply pipe 23 is positioned in the third tank 22, the condenser 20 of the refrigerating unit is positioned in the second tank 25, and the ice melting device 27 on the water supply pipe 23 is positioned in the first tank 28.

As shown in fig. 11 to 14, in the first embodiment of the distributor 19, the distributor 19 includes a base 45 and a distributor plate 43, the base 45 is fixedly disposed at a connection position between the brine tank 29 and the ice-melting recovery tank 21, a transmission shaft 47 is rotatably mounted on the base 45, the transmission shaft 47 is driven by a motor 51, the motor 51 is disposed on the base 45, the distributor plate 43 is located above the transmission shaft 47, the transmission shaft 47 is fixedly connected to the distributor plate 43 by a support frame 46, two ends of the distributor plate 43 are respectively located above the brine tank 29 and the first tank 28, the transmission shaft 47 is perpendicular to a central connecting line between two ends of the distributor plate 43, and a telescopic device is respectively connected between two ends of the distributor plate 43 and the base 45.

When the distributor 19 is not used, the distributing plate 43 is in a horizontal state, when the material coming out from the lower outlet of the lower cavity 38 needs to be discharged into the brine tank 29, the motor 51 is started, the motor 51 drives the transmission shaft 47 to rotate, and further drives the distributing plate 43 to rotate, so that one end of the distributing plate 43 positioned above the brine tank 29 rotates downwards, one end of the distributing plate 43 positioned above the first groove 28 rotates upwards, when the distributing plate 43 is in a proper inclined state, the motor 51 is stopped, and at the moment, the distributing plate 43 is obliquely arranged towards the brine tank 29, so that the material coming out from the lower cavity 38 falls onto the distributing plate 43 and slides into the brine tank 29 along the distributing plate 43. Similarly, when the material discharged from the lower outlet of the lower cavity 38 needs to be discharged into the first groove 28, only the motor 51 needs to be rotated in the opposite direction to tilt the material distributing plate 43 toward the first groove 28, so that the material discharged from the lower cavity 38 falls onto the material distributing plate 43 and slides into the first groove 28 along the material distributing plate 43. After the material in the lower cavity 38 is discharged, the material distributing plate 43 is driven by the motor 51 to return to the horizontal state.

When the material distributing plate 43 is inclined to discharge the material from the lower cavity 38 into the brine tank 29 or the first tank 28, the downward inclined end of the material distributing plate 43 bears most of the weight of the material, so that the entire material distributing plate 43 is unevenly stressed, and the material distributor 19 is easily damaged. In order to avoid that the dispensers 19 are damaged during use and also to make the operation of the dispensers 19 more smooth, telescopic means are arranged in the dispensers 19. When the material distributing plate 43 is driven by the motor 51 to incline, the expansion device at one end of the material distributing plate 43 rotating downwards contracts, and the expansion device at one end of the material distributing plate 43 rotating upwards expands, so that the expansion device can support the material distributing plate 43 in an inclined state, the material distributing plate is not easy to damage due to uneven stress when in use, and the operation is more stable.

In the first embodiment of the distributor 19, the telescopic device is an air cylinder 49 or a hydraulic cylinder 49, the cylinder of the air cylinder 49 or the hydraulic cylinder 49 is hinged on the base 45, and the piston rod of the air cylinder 49 or the hydraulic cylinder 49 is hinged on the material distributing plate 43. The concrete mode that the cylinder barrel of the air cylinder 49 or the hydraulic cylinder 49 is hinged on the base 45 is as follows: the cylinder 49 or the cylinder barrel of the hydraulic cylinder 49 is hinged between two oppositely arranged first lugs 50, and the two first lugs 50 are fixedly arranged on the base 45. The concrete mode that the piston rod of the air cylinder 49 or the hydraulic cylinder 49 is hinged on the material distributing plate 43 is as follows: the piston rod of the air cylinder 49 or the hydraulic cylinder 49 is hinged between two oppositely arranged second support lugs 48, and the two second support lugs 48 are fixedly arranged on the material distributing plate 43. In addition to the above-mentioned function of supporting the material distributing plate 43, the air cylinder 49 or the hydraulic cylinder 49 can also be used as a backup power source for the rotation of the material distributing plate 43, that is, when the motor 51 fails, the material distributing plate 43 is rotated by controlling the air cylinder 49 or the hydraulic cylinder 49, that is, when the air cylinder 49 or the hydraulic cylinder 49 at one end of the material distributing plate 43 contracts and the air cylinder 49 or the hydraulic cylinder 49 at the other end of the material distributing plate 43 expands, the material distributing plate 43 rotates to be in an inclined state, whereas when the air cylinder 49 or the hydraulic cylinder 49 at one end of the material distributing plate 43 changes from contracting to expanding and the air cylinder 49 or the hydraulic cylinder 49 at the other end of the material distributing plate 43 changes from expanding to contracting, the material distributing plate 43 returns to a horizontal state. Retraction of the cylinder 49 or cylinder 49 means retraction of the piston rod into the cylinder and extension of the cylinder 49 or cylinder 49 means extension of the piston rod out of the cylinder. Two air cylinders 49 or hydraulic cylinders 49 are respectively arranged at two ends of the material separating plate 43.

As shown in fig. 12, the specific manner of the transmission shaft 47 rotatably mounted on the base 45 is as follows: two oppositely arranged supporting plates 44 are fixedly arranged on the base 45, and the transmission shaft 47 is rotatably arranged on the two supporting plates 44 through bearings.

As shown in fig. 11 and 14, the supporting frame 46 is V-shaped, the middle of the supporting frame 46 is fixedly connected to the transmission shaft 47, and both ends of the supporting frame 46 are fixedly connected to the material distributing plate 43. The support frame 46 is designed to be V-shaped, so that the support frame can support the material distributing plate 43 more stably.

As shown in fig. 11 to 14, a material containing groove 52 is provided between the two ends of the top surface of the material distributing plate 43, that is, the material containing groove 52 extends between the two ends of the material distributing plate 43, and after the material falls on the top surface of the material distributing plate 43, when the material distributing plate 43 is inclined, the material can only slide off from the two ends of the material distributing plate 43. The depth of the material containing groove 52 is gradually reduced from the middle to the two ends, that is, the material containing groove 52 is designed into an arc-shaped groove structure. When the material discharged from the lower chamber 38 falls on the top surface of the material-separating plate 43, the material slides down the trough 52 into the brine tank 29 or the first trough 28. As shown in fig. 14, when the material slides from the left end of the material containing groove 52, due to the design of the arc-shaped groove, the height of the right end of the material containing groove 52 is higher, so that the material falling on the material distributing plate 43 is not easy to slide from the right end, but only can slide from the left end of the material distributing plate 43, that is, the material containing groove 52 is designed into the arc-shaped groove, so as to protect the material.

Fig. 15 shows a second embodiment of the dispenser 19, which differs from the first embodiment in the structure of the telescopic device, namely: the telescopic device in the embodiment comprises an outer sleeve barrel 56 and an inner rod 53, wherein one end of the bottom of the outer sleeve barrel 56 is hinged to the base 45, one end of the opening of the outer sleeve barrel 56 is sleeved with the lower end of the inner rod 53 in a sealing mode, the upper end of the inner rod 53 is hinged to the material distributing plate 43, a spring 58 is arranged in the cavity of the outer sleeve barrel 56, and the spring 58 is connected between the lower end of the inner rod 53 and the inner barrel bottom of the outer sleeve barrel 56.

In order to enhance the sealing performance between the inner rod 53 and the outer sleeve barrel 56, a sealing ring 54 is arranged between the opening of the outer sleeve barrel 56 and the inner rod 53, and the sealing ring 54 is fixedly arranged on the opening of the outer sleeve barrel 56. In order to prevent the inner rod 53 from slipping off the outer sleeve barrel 56, an annular baffle 55 is arranged at the barrel opening of the outer sleeve barrel 56, the inner rod 53 is inserted into the annular baffle 55, the sealing ring 54 is fixedly arranged on the annular baffle 55, and a radial flange 57 is arranged at the lower end of the inner rod 53, so that when the inner rod 53 extends out of the outer sleeve barrel 56, the radial flange 57 at the lower end of the inner rod 53 can abut against the annular baffle 55 along with the continuation of the extending action, and therefore, under the blocking of the annular baffle 55, the lower end of the inner rod 53 cannot be separated from the outer sleeve barrel 56, and the inner rod 53 and the outer sleeve barrel 56 are prevented from slipping off each other in the movement process.

Under the drive of the motor 51, when the material distributing plate 43 inclines, the expansion device at the downward inclined end of the material distributing plate 43 contracts (at the moment, the inner rod 53 moves downwards to compress the spring 58), the expansion device at the upward inclined end of the material distributing plate 43 stretches (at the moment, the inner rod 53 moves upwards to expand the spring 58), otherwise, when the motor 51 reverses, the expansion device at the downward inclined end of the material distributing plate 43 changes from contracting to expanding (at the moment, the inner rod 53 moves upwards, the spring 58 changes from compressing state to natural state), the expansion device at the upward inclined end of the material distributing plate 43 changes from expanding to contracting (at the moment, the inner rod 53 moves downwards, the spring 58 changes from stretching state to natural state), and the material distributing plate 43 returns to the horizontal state.

As shown in fig. 1 and fig. 2, the following two working conditions exist in the freezing, crystallizing and refrigerating process of the refrigerating unit in the water treatment system according to the present invention:

the working condition I is as follows: when the outdoor environment temperature is higher than the evaporation temperature of the refrigerating unit, the compressor 7 works to discharge high-temperature and high-pressure gaseous refrigerating working media to enter the condenser 20 in the ice-melting recovery tank 21, most of the refrigerating working media are liquefied and release heat in the condenser 20 to melt the ice in the ice-melting recovery tank 21 into water and recover the cold quantity of the ice, then the cold supplementing device is started, the cold supplementing compressor 5 works to enable the high-temperature and high-pressure gaseous refrigerating working media in the cold supplementing device to be liquefied through the cold supplementing condenser 4, then the liquefied high-temperature and high-pressure gaseous refrigerating working media are intercepted by the cold supplementing expansion valve 3 and evaporated and absorbed in the cold supplementing evaporator 6, the gas-liquid mixed state refrigerating working media of the refrigerating unit flow into the cold supplementing evaporator 6 to be liquefied again in a cold supplementing mode, then the liquid state refrigerating working media of the refrigerating unit directly flow to the expansion valve 1 and then flow to the evaporator 14 in the freezing crystallizer 13 to be evaporated, absorbed and gasified in an evaporated and absorbed heat mode, and then the low-temperature and low-pressure gaseous refrigerating working media of the refrigerating unit are discharged through the compressor 7 to complete the heat-releasing refrigeration cycle.

Working conditions are as follows: when the outdoor environment temperature is lower than the evaporation temperature of the refrigerating unit, the compressor 7 works, the high-temperature and high-pressure gaseous refrigerating working medium is discharged to enter the condenser 20 in the ice melting recovery tank 21, most of the refrigerating working medium is liquefied and releases heat in the condenser 20, the ice in the ice melting recovery tank 21 is melted into water, the cold quantity of the ice is recovered, the cold compensator is closed, the gas-liquid mixed state refrigerating working medium of the refrigerating unit flows through the cold compensation evaporator 6 to enter the low-temperature recooler 2, the outdoor low-temperature air is cooled and released, the whole liquefaction of the refrigerating working medium is completed, the liquid state refrigerating working medium flows to the expansion valve 1 to be stopped, the evaporator 14 in the freezing crystallizer 13 is evaporated, heat absorption and gasification are performed, the low-temperature and low-pressure gaseous refrigerating working medium is discharged by the compressor 7 again, and the heat release refrigeration cycle is completed.

It should be noted that, in the above two operating conditions, after flowing through the intercooler, the refrigerant of the refrigeration unit can be adjusted by the valve to directly flow to the expansion valve 1, or flow through the low-temperature sub-cooler 2 and then flow to the expansion valve 1.

As shown in fig. 1, and in conjunction with fig. 3-10, the work flow of using the water treatment system of the present invention is as follows:

a water feeding pump 30 pumps the brine in a brine tank 29 and pumps the brine into the freezing crystal separator 13 through a fifth pipeline 17, the brine releases heat in the freezing crystal separator 13, the temperature is reduced to the freezing point of water, ice is separated out through crystallization, the salt content in the brine is increased to saturation, when the temperature of the brine is continuously reduced to the eutectic point of salt and water in the freezing crystal separator 13, ice and crystal salt are separated out simultaneously in the freezing crystal separator 13, and due to different densities, the density of the ice crystal is smaller than that of the brine, the ice crystal floats upwards, and the ice is discharged from an upper outlet of the freezing crystal separator 13 in a flow state ice (the water content is 40% -50%); the density of the salt crystals is higher than that of the brine, the salt crystals sink, the salt crystals are discharged from the lower outlet of the freezing and crystallizing device 13 in a fluid state of a mixture of the brine and the crystal salts, the mixture enters the dehydrator 15 through the sixth pipeline 16 to be separated from the crystal salts, the dehydrated salts are collected in a centralized manner, and the separated brine flows back to the brine tank 29 through the seventh pipeline 31. The flow state ice flowing out from the upper outlet of the freezing crystal separator 13 enters the vacuum dehydrator 9 through the third pipeline 8 to be dehydrated and salt washed, the vacuum dehydrator 9 is filled with the flow state ice to stop ice injection, water in the flow state ice flows down through meshes of a filter valve 39 at the upper end of the lower cavity 38, the ice crystals are filtered out and left in an ice filter cylinder 37 of the vacuum dehydrator 9, a regulating drain valve 41 of the lower cavity 38 filled with the water is opened, the water flows downwards under the action of gravity, gap water among the ice crystals is sucked by the flowing water, upper air is supplemented, and the water in the lower cavity 38 is discharged into the brine tank 29 through the second pipeline 18. After the water in the lower cavity 38 is drained, the cleaning pump 26 is started to clean the ice crystals in the ice filtering cylinder 37, after the cleaning pump 26 is stopped, the vacuum pump 12 is started to suck and drain water in the gaps between the ice crystals in the ice filtering cylinder 37, after the cleaning water is drained through the second pipeline 18 (the cleaning water is drained into the brine tank 29), the vacuum pump 12 is closed, the distributor 19 is opened to the brine tank 29 side, the isolation valve 40 at the lower end of the lower cavity 38 is opened to drain the bottom water of the cavity, then the distributor 19 is opened to the ice melting recovery tank 21 side, the filter valve 39 of the vacuum dehydrator 9 is opened, and the ice in the ice filtering cylinder 37 is drained into the ice melting recovery tank 21. In the ice melting recovery tank 21, ice is subjected to heat exchange by an ice melting device 27, heat exchange by a condenser 20 and heat exchange by a cold recovery device 24 in sequence, and is discharged from a clear water outlet after three-stage cold recovery, and reaches the III-class surface water discharge standard. Clean water after ice melting and supplementary brine at normal temperature (the supplementary brine flows to the brine tank 29 through the water supply pipe 23, the ice melting device 27 and the cold recoverer 24 on the water supply pipe 23 are positioned in the ice melting recovery tank 21) reversely exchange heat in the ice melting recovery tank 21 to supplement the cold energy in the brine recovered ice water, the temperature of the supplementary brine at normal temperature is reduced to be close to 0 ℃, and then the supplementary brine enters the brine tank 29 to reduce the cold energy of the refrigerating unit used for sensible heat cooling of the brine, so that the refrigerating unit can directly use the cold energy for crystallization refrigeration of high brine, and the efficiency of the system for processing high brine is improved.

The utility model discloses vacuum dehydrator's application method, including following step:

the method comprises the following steps: ice crystal filter (as shown in figure 4)

The water inlet valve 36 is opened to enable the fluid ice of the mixture of the ice crystals and the brine to flow into the ice filtering cylinder 37, the brine in the fluid ice flows into the lower cavity 38 through the filtering valve 39 and is filled gradually, the ice crystals in the fluid ice are blocked in the ice filtering cylinder 37 by the filtering valve plate (the filtering valve plate is provided with meshes, the brine in the fluid ice can pass through the meshes, but the ice crystals cannot pass through the meshes) of the filtering valve 39, when the ice crystals in the ice filtering cylinder 37 float upwards and layer due to the density of the ice crystals being smaller than the density of the brine, the adjusting water discharge valve 41 is opened, the brine flows back to the brine tank 29, the ice crystals in the ice filtering cylinder 37 are guaranteed to be fully immersed in the brine, and when the material sensor 34 detects that the fluid ice is full of the ice filtering cylinder 37, the water inlet valve 36 is closed, and the supply of the fluid ice to the ice filtering cylinder 37 is stopped.

Step two: absorbing and discharging water (as shown in figure 5)

The ice crystals are filled in the ice filtering cylinder 37, after the water inlet valve 36 is closed, the opening degree of the water discharge valve 41 is adjusted to discharge the saline water, the saline water in the lower cavity 38 flows downwards under the action of gravity, gap water among the ice crystals is sucked away by the flowing water, the upper part of the ice filtering cylinder 37 is provided with an air vent, and air is supplied from the air vent, so that the water discharge speed ensures that the liquid level of the gap water of the ice crystals stably descends until the saline water in the lower cavity 38 is emptied. The water discharge speed cannot be too high, otherwise, an air channel is formed in the middle of the ice crystals, and water flow around the ice filtering cylinder 37 cannot go down.

Step three: cleaning (as shown in figure 6)

After the salt water in the lower cavity 38 is emptied, the adjusting drain valve 41 is closed, the cleaning pump 26 is started or the cleaning valve 33 is opened, the ice crystal is uniformly sprayed with clean water by utilizing the ice melting water or the clean water through the cleaning nozzle 35 on the upper part of the ice filtering cylinder 37, the gap between the ice crystals on the upper part is filled, the cleaning pump 26 or the cleaning valve 33 is closed to stop spraying water, the air suction valve 42 is opened to suck the air in the lower cavity 38, when the vacuum degree in the pressure tank of the vacuum pump 12 is insufficient, the vacuum pump 12 is started, the air pressure of the lower cavity 38 is gradually reduced, the air flows into the air vent hole on the upper part of the ice filtering cylinder 37 for supplement, the water in the gap between the ice crystals on the upper part is pushed to flow into the lower cavity 38 downwards, and the washing of the salt on the surface of the ice crystals is completed.

Step four: bottom drainage (as shown in figure 7)

The dispenser 19 is opened to the brine tank 29 and the isolation valve 40 is opened to drain the brine in the lower chamber 38 into the brine tank 29.

Step five: ice crystal removal (as shown in figure 8)

After the brine in the lower cavity 38 is discharged, the distributor 19 is opened to the ice-melting recovery tank 21, the filter valve plate of the filter valve 39 is opened, the ice crystals in the ice-filtering cylinder 37 sequentially pass through the filter valve 39, the lower cavity 38, the isolation valve 40 and the distributor 19 to flow into the ice-melting recovery tank 21, and the filter valve 39 and the isolation valve 40 are closed after the ice crystals are discharged.

It should be noted that the terms "center", "upper", "lower", "front", "rear", "left", "right", "middle", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and operate, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

The above-mentioned embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.

Claims (7)

1. A vacuum dehydrator is characterized in that: the improved water-saving washing device comprises a vertically arranged cylindrical shell, wherein an upper barrel opening of the shell is sealed, the top of the shell is connected with a washing pipeline, a washing valve is arranged on the washing pipeline, an air vent is arranged on the upper portion of the shell, a filtering valve and an isolating valve which are sequentially arranged from top to bottom are arranged on the lower portion of the shell, a first pipeline and a second pipeline are connected to the shell between the filtering valve and the isolating valve, the first pipeline is connected with a vacuum pump, an air suction valve is arranged on the first pipeline, an adjusting drain valve is arranged on the second pipeline, a third pipeline is further connected to the upper portion of the shell, and a water inlet valve is arranged on the third pipeline.

2. The vacuum extractor of claim 1, wherein: the casing includes the ice filtering cylinder and lower cavity that communicate each other, cavity fixed connection is in the below of straining the ice filtering cylinder down, wash the pipe connection in the top of straining the ice filtering cylinder, the end that is located in straining the ice filtering cylinder of washing pipeline is connected with the washing shower nozzle, the upper portion of straining the ice filtering cylinder is connected with the third pipeline, the upper portion of straining the ice filtering cylinder is equipped with the air vent, the upper end of cavity is equipped with the filter valve down, the lower extreme of cavity is equipped with the isolating valve down, first pipeline and second pipe connection are on cavity down, first pipeline and second pipeline all are located between filter valve and the isolating valve with the junction of cavity down.

3. The vacuum extractor of claim 2, wherein: and a material sensor is arranged at the top in the ice filtering cylinder.

4. The vacuum extractor of claim 3, wherein: the cleaning sprayer comprises a barrel-shaped sprayer body, the inner diameter of the sprayer body gradually decreases from the bottom of the barrel to the barrel opening, a supporting plate is fixedly arranged at the barrel opening of the sprayer body, overflowing holes are formed in the edge of the supporting plate, a plugging plate is arranged in a barrel cavity of the sprayer body and located below the supporting plate, a spring is connected between the plugging plate and the supporting plate, spray holes are formed in the bottom of the sprayer body, and the barrel opening of the sprayer body is fixedly connected to the end, located in an ice filtering barrel, of a cleaning pipeline.

5. The vacuum extractor of claim 4, wherein: the upper end fixed connection of spring is in the bottom surface middle part of backup pad, the lower extreme fixed connection of spring is in the top surface middle part of shutoff board, the periphery of spring is equipped with the sleeve, telescopic upper end fixed connection is in the bottom surface middle part of backup pad, telescopic lower extreme fixed connection is in the top surface middle part of shutoff board, the sleeve adopts elasticity waterproof material to make.

6. The vacuum dehydrator according to claim 5, wherein: and a sealing ring is arranged at the edge of the plugging plate.

7. The vacuum extractor of claim 6, wherein: the nozzle is characterized in that a threaded cylinder is fixedly connected to the opening of the nozzle body, and the threaded cylinder is in threaded connection with the end of the cleaning pipeline, which is located in the ice filtering cylinder.

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