CN110616133A - Low temperature filtration system with self-cleaning function - Google Patents

Abstract

The invention relates to a low-temperature filtration system with self-cleaning function, which comprises a raw liquid tank, a cold and heat exchange mechanism, a transfer tank, a diatomite filter, a first fine filter, a sedimentation tank, a finished product tank and a waste liquid tank. The filtration system is equipped with a sedimentation tank between the diatomite filter and the fine filter. The sedimentation tank can precipitate part of the diatomite particles mixed into the wine body, so that the content of diatomite in the wine body is significantly reduced, and the wine body is greatly reduced. Disposal burden on the fine filter. Moreover, the qualified wine body in the finished product tank can also be reversely transported back into the first fine filter and the second fine filter to realize backwashing of the fine filter and achieve a good cleaning effect. In addition, the fine filter of the filtration system is also equipped with a reverse air intake device, which is used to reversely introduce airflow into the fine filter before backwashing the fine filter. Diatomaceous earth particles or lipids located in the filter pores reduce the resistance of the backwashing process.

Description

A low-temperature filter system with self-cleaning function

technical field

The invention relates to wine filtration technology, in particular to a low-temperature filtration system with self-cleaning function.

Background technique

In the winemaking process, some lipids will inevitably be produced, such as palm ethyl ester, ethyl oleate and ethyl linoleate. Lipids can be dissolved in the wine body at room temperature, but they may When it is cold, it will precipitate from the wine body and form white flocs, which will cause the wine body to be cloudy and less stable. In order to remove the lipids in the wine body, it is generally necessary to carry out low-temperature freezing treatment on the wine body first, so that the temperature of the wine body is lowered, and then the lipids are precipitated from the wine body, and then the lipids are removed by a diatomaceous earth filter. filter out. Although the diatomite filter has a good filtering effect on the lipids in the wine body, there will inevitably be a small part of the lipids in the wine, and there will inevitably be a small amount of lipids in the wine body that has passed through the diatomite filter. Some diatomaceous earth particles were mixed. The mixed diatomite particles and residual lipids are very easy to saturate the fine filter set in the downstream process, resulting in shortened service life of the fine filter, and the fine filter needs to be replaced frequently. The frequent replacement of the fine filter not only increases the production cost, but also increases the labor intensity of the workers, which is not conducive to the improvement of production efficiency.

Contents of the invention

In order to solve the above-mentioned technical problems, the present invention provides a low-temperature filtration system with self-cleaning function, including a raw liquid tank, a cold and heat exchange mechanism, a transfer tank, a diatomite filter, a first fine filter, a sedimentation tank, a finished product tank and Waste liquid tank; the liquid outlet of the raw liquid tank is connected to the liquid inlet of the heat and cold exchange mechanism through the feed pipeline, and the first valve, the first motor and the second valve are arranged in sequence on the feed pipeline, and the second valve is close to the The cold and heat exchange mechanism is set, and the liquid outlet of the cold and heat exchange mechanism is connected with the liquid inlet of the transfer tank through the third valve; One return pipe, one end of the first return pipe communicates with the liquid inlet of the cooling and heat exchange mechanism, and the other end communicates with the liquid outlet of the transfer tank through the fourth valve, the second motor and the fifth valve;

A branch pipe is connected between the liquid outlet of the transfer tank and the fifth valve, one end of the branch pipe communicates with the liquid outlet of the transfer tank, and the other end communicates with the liquid inlet of the diatomite filter through the sixth valve; The liquid outlet of the diatomite filter is connected with a discharge pipe, one end of the discharge pipe is connected with the liquid outlet of the diatomite filter, and the other end passes through the seventh valve, the eighth valve, the ninth valve and the sedimentation tank, The liquid inlets of the waste liquid tank and the finished product tank are connected, and a third motor is installed on the discharge pipe; and the feed pipe is also connected with a second return pipe between the first motor and the first valve, and one end of the second return pipe is connected to the first valve. The feed pipes are connected, and the other end is connected with the liquid outlet of the sedimentation tank through the tenth valve;

The transfer tank is also provided with a fine filter output port, and the fine filter output port of the transfer tank communicates with the liquid inlet of the first fine filter through the eleventh valve, the fourth motor, and the twelfth valve. The outlet of the discharge pipe is connected to the discharge pipe through the thirteenth valve; a cleaning pipe is also connected between the thirteenth valve and the outlet of the first fine filter, and one end of the cleaning pipe is connected to the outlet of the first fine filter The other end communicates with the liquid outlet of the finished product tank through the fifth motor, and the cleaning pipeline is used to reversely transmit the liquid in the finished product tank from the liquid outlet of the first fine filter to the first fine filter; and the said A reverse output pipeline is also connected between the liquid inlet of the first fine filter and the twelfth valve. One end of the reverse output pipeline is connected with the discharge pipeline, and the other end is connected to the first fine filter through the fourteenth valve. The liquid inlets are connected.

Further, a heating device is installed on the cleaning pipeline, the heating device is arranged between the fifth motor and the liquid outlet of the first fine filter, and the heating device is used to heat the liquid in the cleaning pipeline.

Further, it also includes a second fine filter, and the second fine filter is arranged between the liquid outlet of the first fine filter and the thirteenth valve; the liquid inlet of the second fine filter is connected to the first valve through the fifteenth valve. The liquid outlet of the fine filter is connected, and the liquid outlet of the second fine filter is connected with the thirteenth valve; and the cleaning pipeline is provided with a sixteenth valve between the heating device and the liquid outlet of the first fine filter, and the cleaning pipeline A cleaning branch is also connected between the sixteenth valve and the heating device. One end of the cleaning branch is connected to the cleaning pipeline, and the other end is connected to the liquid outlet of the second fine filter through the seventeenth valve. The cleaning branch is set between the liquid outlet of the second fine filter and the thirteenth valve; a reverse output branch is also connected between the liquid inlet of the second fine filter and the fifteenth valve, and the reverse output branch One end communicates with the liquid inlet of the second fine filter, and the other end communicates with the reverse output pipeline through the eighteenth valve.

Further, it also includes an air pump, a first air inlet pipe is connected between the liquid outlet of the first fine filter and the sixteenth valve, and a first gas inlet pipe is connected between the liquid outlet of the second fine filter and the seventeenth valve. Two air intake pipes, the first air intake pipe and the second air intake pipe are respectively connected to the air pump through the nineteenth valve and the twentieth valve, and the air pump is used to pass through the first air intake pipe and the second air intake pipe. The gas pipes transport gas in reverse to the first fine filter and the second fine filter respectively, and the first fine filter and the second fine filter are respectively equipped with pressure regulating devices for adjusting internal and external air pressure.

Further, the air pump is also equipped with a nitrogen tank, and the nitrogen tank is filled with nitrogen, and the air pump is used to transport the nitrogen to the first fine filter and the second fine filter through the first air intake pipeline and the second air intake pipeline respectively Inside.

Further, the first air intake pipe and the second air intake pipe are respectively equipped with gas metering devices.

Further, a cold heat exchanger is also included, and the cold heat exchanger is used to exchange heat between the liquid in the feed pipeline and the liquid in the discharge pipeline.

Further, the cold and heat exchanger includes a heat-conducting block and an insulating layer, and the inside of the heat-conducting block is provided with a first hole structure and a second hole structure matching the feed pipe and the discharge pipe, and the heat-insulating layer Wrapped outside the heat conduction block, it is used to reduce the heat exchange rate between the heat conduction block and the environment.

Further, the cold and heat exchange mechanism is equipped with a refrigerant tank, a cold and heat exchange module, and a compressor. The refrigerant stored in the refrigerant tank is used to exchange heat with the liquid passing through the cold and heat exchange mechanism. The compressor is used to The refrigerant is cooled by the cold and heat exchange module.

Further, the transfer tank is equipped with a temperature detection device; the liquid outlet of the finished product tank is equipped with a liquid metering device.

The beneficial technical effects played by the present invention are as follows:

Compared with the prior art, the present invention discloses a low-temperature filtration system with self-cleaning function. In the filtration system, a sedimentation tank is added between the diatomite filter and the fine filter. Part of the diatomaceous earth particles are precipitated, and the precipitated wine will be sent back to the heat and cold exchange mechanism for cooling, and the cooled wine body will be sent to the fine filter for processing. The content of diatomaceous earth in the wine body after the treatment in the sedimentation tank is significantly reduced, which greatly reduces the processing burden of the fine filter, which is beneficial to prolong the service life of the fine filter and reduce maintenance costs. The most important thing is that the qualified wine body in the finished product tank can be warmed up and sent back to the first fine filter and the second fine filter to realize the backwashing of the fine filter, and at the same time, the high-temperature wine body can be used to further dilute the fine wine. Part of the lipids in the filter are redissolved to achieve a good cleaning effect. In addition, the fine filter of the filtration system is also equipped with a reverse air intake device, which is used to reversely introduce airflow into the fine filter before the fine filter is backwashed, and the airflow passed through can achieve the purpose of dredging the filter holes. The purpose is to loosen the diatomaceous earth particles or lipids in the filter holes to reduce resistance for the subsequent backwashing process.

Description of drawings

Figure 1 is a schematic structural view of the low-temperature filtration system with self-cleaning function in Example 1.

Figure 2 is a schematic diagram of the structure of the cryogenic filtration system with the addition of an air pump.

FIG. 3 is a schematic structural view of the cold and heat exchanger in Embodiment 1.

FIG. 4 is a schematic diagram of the connection relationship among the cooling and heat exchanging mechanism, the refrigerant tank, the cooling and heat exchanging module and the compressor in Embodiment 1. FIG.

Reference signs:

1- Raw liquid tank, 2- Cold and heat exchange mechanism, 3- Transfer tank, 4- Diatomaceous earth filter, 5- First fine filter, 6- Precipitation tank, 7- Waste liquid tank, 8- Finished product tank, 9- Feed pipeline, 10-the first valve, 11-the first motor, 12-the second valve, 13-the third valve, 14-the first return pipeline, 15-the fourth valve, 16-the second motor, 17-the first Five valves, 18-branch pipeline, 19-sixth valve, 20-discharging pipeline, 21-seventh valve, 22-eighth valve, 23-ninth valve, 24-third motor, 25-second return pipeline , 26-tenth valve, 27-eleventh valve, 28-fourth motor, 29-twelfth valve, 30-thirteenth valve, 31-cleaning pipeline, 32-fifth motor, 33-reverse output Pipeline, 34-fourteenth valve, 35-heating device, 36-second fine filter, 37-fifteenth valve, 38-sixteenth valve, 39-cleaning branch, 40-seventeenth valve, 41- Reverse output branch, 42-eighteenth valve, 43-cold heat exchanger, 44-twenty-first valve, 45-twenty-second valve, 46-twenty-third valve, 47-air pump, 48- First air intake pipe, 49-second air intake pipe, 50-nineteenth valve, 51-twentieth valve, 52-nitrogen tank, 53-heat conducting block, 54-insulation layer, 55-first hole structure , 56-second hole structure, 57-refrigerant tank, 58-cooling and heat exchange module, 59-compressor.

The accompanying drawings are for illustrative purposes only, and should not be construed as limitations on this patent; in order to better illustrate this embodiment, certain components in the accompanying drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art For personnel, it is understandable that some known structures and descriptions thereof may be omitted in the drawings; the same or similar symbols correspond to the same or similar components; as a limitation of this patent.

Detailed ways

The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

Example 1:

As shown in Figure 1, this embodiment provides a low-temperature filtration system with a self-cleaning function, including a stock solution tank 1, a cold and heat exchange mechanism 2, a transfer tank 3, a diatomaceous earth filter 4, a first fine filter 5, Settling tank 6, finished product tank 8 and waste liquid tank 7. The liquid outlet of the raw liquid tank 1 is connected with the liquid inlet of the cooling and heat exchanging mechanism 2 through the feed pipe 9 . A first valve 10 , a first motor 11 and a second valve 12 are sequentially arranged on the feed pipe 9 , the first valve 10 is set close to the raw liquid tank 1 , and the second valve 12 is set close to the cooling and heat exchange mechanism 2 . The liquid outlet of the cold and heat exchange mechanism 2 is connected with the liquid inlet of the transfer tank 3 through the third valve 13 . The cold and heat exchange mechanism 2 is used to cool down the liquid in the pipeline. The cold and heat exchange mechanism 2 in this embodiment is equipped with a refrigerant tank 57, a cold and heat exchange module 58 and a compressor 59. The refrigerant stored in the refrigerant tank 57 The refrigerant is used to exchange heat with the liquid passing through the cooling and heat exchanging mechanism 2 , and the compressor 59 is used to cool down the refrigerant through the cooling and heat exchanging module 58 . The specific connection relationship is shown in FIG. 4 . Of course, the cooling and heat exchanging mechanism 2 can also be selected from other devices with a cooling function on the market, and there is no unique limitation here. The feed pipeline 9 is connected with a first return pipeline 14 between the second valve 12 and the liquid inlet of the cold and heat exchange mechanism 2, and one end of the first return pipeline 14 communicates with the liquid inlet of the cold and heat exchange mechanism 2, and the other end passes through The fourth valve 15 , the second motor 16 and the fifth valve 17 communicate with the liquid outlet of the transfer tank 3 . That is, the cold and heat exchange mechanism 2 and the transfer tank 3 can form a circulation loop through the first return pipeline 14, so that the cold and heat exchange mechanism 2 can repeatedly cool down the liquid in the transfer tank 3 until the liquid in the transfer tank 3 meets the low temperature requirement. filter as required. In order to facilitate the accurate monitoring of the temperature of the liquid in the transfer tank 3, the side wall of the transfer tank 3 is also equipped with a temperature detection device, such as a thermometer, and the temperature detected by the temperature detection device can be read in real time, which greatly improves the temperature control. precision.

A branch pipe 18 is connected between the liquid outlet of the transfer tank 3 and the fifth valve 17, and one end of the branch pipe 18 is connected with the liquid outlet of the transfer tank 3, and the other end is connected to the inlet of the diatomite filter 4 through the sixth valve 19. The liquid port is connected. The liquid outlet of the diatomite filter 4 is connected with a discharge pipe 20 , and one end of the discharge pipe 20 is connected with the liquid outlet of the diatom earth filter 4 . The other end communicates with the liquid inlet of the sedimentation tank 6 , the liquid inlet of the waste liquid tank 7 and the liquid inlet of the finished product tank 8 through the seventh valve 21 , the eighth valve 22 and the ninth valve 23 respectively. A third motor 24 is mounted on the discharge pipeline 20 . That is to say, the liquid discharged through the discharge pipeline 20 can choose to settle in the settling tank 6, also can choose to enter the waste liquid tank 7, and of course also can choose to enter the finished product tank 8, only need to control the seventh valve 21, the eighth valve 22, the The switch of nine valves 23 can be realized. The feed pipeline 9 is further connected with a second return pipeline 25 between the first motor 11 and the first valve 10 . One end of the second return pipe 25 is connected to the feed pipe 9, and the other end is connected to the liquid outlet of the sedimentation tank 6 through the tenth valve 26, so that the settled liquid can be transported to the cold and hot water by the feed pipe 9 again. Exchange mechanism2. The finished product liquid in the finished product tank 8 will flow to the discharge pipe from the liquid outlet of the finished product tank 8, and be discharged to the next process through the twenty-third valve 46 installed on the discharge pipe. The waste liquid tank 7 is used to collect the cleaning waste liquid. Once the waste liquid tank 7 is filled with the cleaning waste liquid, it is generally directly transferred by the staff to enter the waste liquid treatment process.

The transfer tank 3 also has a fine filter output port, and the fine filter output port of the transfer tank 3 communicates with the liquid inlet of the first fine filter 5 through the eleventh valve 27, the fourth motor 28, and the twelfth valve 29. The liquid outlet of the first fine filter 5 communicates with the discharge pipe 20 through the thirteenth valve 30 , and the liquid through the fine filter is transported into the finished product tank 8 through the discharge pipe 20 . A cleaning pipeline 31 is also connected between the thirteenth valve 30 and the liquid outlet of the first fine filter 5, and one end of the cleaning pipeline 31 communicates with the liquid outlet of the first fine filter 5, and the other end passes through the fifth motor 32, the first Twenty-two valves 45 communicate with the liquid outlet of the finished product tank 8, and the liquid outlet of the finished product tank 8 is equipped with a liquid metering device, such as a flow meter. The cleaning pipeline 31 is used to reversely transfer part of the finished product liquid in the finished product tank 8 from the liquid outlet of the first fine filter 5 to the first fine filter 5, so as to realize the reverse reaction to the filter membrane group in the first fine filter 5. rinse. And between the liquid inlet of the first fine filter 5 and the twelfth valve 29, a reverse output pipeline 33 is also connected. One end of the reverse output pipeline 33 is connected with the discharge pipeline 20, and the other end is connected to the discharge pipeline 20 through the fourteenth valve 34. The liquid inlets of the first fine filter 5 are connected. The finished liquid that enters the first fine filter 5 reversely passes through the filter membrane group set in the first fine filter 5, and then completes the backwashing effect on the filter membrane, and the cleaned finished liquid passes through the first fine filter The liquid inlet of 5 enters the reverse output pipeline 33, and is discharged to the discharge pipeline 20 by the reverse output pipeline 33, and then discharged to the waste liquid tank 7 or the sedimentation tank 6.

Preferably, a heating device 35 is also installed on the cleaning pipeline 31 . The heating device 35 is arranged between the fifth motor 32 and the liquid outlet of the first fine filter 5 , and the heating device 35 is used for heating the liquid in the cleaning pipeline 31 . The heating device 35 can be a commercially available heater. Utilize the heating device 35 to heat the liquid in the cleaning pipeline 31 in order to use the finished product liquid after the temperature rise to redissolve the lipids precipitated under the low temperature condition in the first fine filter 5 and take them away together to improve the efficiency of the first fine filter. Backwash effect of filter 5.

As shown in FIG. 1 , preferably, a second fine filter 36 is also included. The second fine filter 36 is arranged between the liquid outlet of the first fine filter 5 and the thirteenth valve 30 . The liquid inlet of the second fine filter 36 communicates with the liquid outlet of the first fine filter 5 through a fifteenth valve 37 . The liquid outlet of the second fine filter 36 is connected with the thirteenth valve 30 . And the cleaning pipeline 31 is provided with a sixteenth valve 38 between the heating device 35 and the liquid outlet of the first fine filter 5, and the cleaning pipeline 31 is also connected with a cleaning branch 39 between the sixteenth valve 38 and the heating device 35. . One end of the cleaning branch 39 is connected to the cleaning pipeline 31 , and the other end is connected to the liquid outlet of the second fine filter 36 through the seventeenth valve 40 . The cleaning branch 39 is arranged between the liquid outlet of the second fine filter 36 and the thirteenth valve 30, and the reverse output branch 41 is also connected between the liquid inlet of the second fine filter 36 and the fifteenth valve 37. , one end of the reverse output branch 41 communicates with the liquid inlet of the second fine filter 36 , and the other end communicates with the reverse output pipeline 33 through the eighteenth valve 42 . The setting of the cleaning branch 39 and the reverse output branch 41 realizes simultaneous backwashing of the first fine filter 5 and the second fine filter 36, which is beneficial to improve cleaning efficiency. In this embodiment, the first fine filter 5 is provided with a polypropylene filter membrane, and the polypropylene filter membrane is made of polypropylene superfine fiber hot-melt bonding. And the second fine filter 36 is provided with an airgel filter membrane group, the airgel filter membrane group comprises a base cloth, the base cloth both sides are respectively provided with an airgel filter layer, and the airgel filter layer is opposite to the base cloth One side is provided with a microporous filter membrane. In this embodiment, the modified fiber woven fabric is selected as the base fabric, with a thickness of about 1.5mm; the internal pore diameter of the airgel filter layer is controlled between 8-13nm, and the thickness of the airgel filter layer is preferably 16cm; The outermost microporous filtration membrane is a PTFE microporous filtration membrane, and the thickness of the microporous filtration membrane is 0.5 mm. The microporous filtration membrane, airgel filtration layer and base cloth form a gradient pore structure.

As shown in FIG. 2 , preferably, an air pump 47 is also included. A first air inlet pipe 48 is connected between the liquid outlet of the first fine filter 5 and the sixteenth valve 38 . A second air inlet pipe 49 is connected between the liquid outlet of the second fine filter 36 and the seventeenth valve 40 . The first air intake pipe 48 and the second air intake pipe 49 communicate with the air pump 47 through the nineteenth valve 50 and the twentieth valve 51 respectively. The air pump 47 is used to reversely transport gas into the first fine filter 5 and the second fine filter 36 through the first air intake pipe 48 and the second air intake pipe 49 respectively. The air pump 47 reversely transports the gas into the first fine filter 5 and the second fine filter 36 in order to dredge the filter holes by means of the air flow and reduce resistance for subsequent backwashing. Certainly, because there is gas to feed in the first fine filter 5 and the second fine filter 36, the pressure will inevitably increase. , the first fine filter 5 and the second fine filter 36 need to be equipped with pressure regulating devices for adjusting the internal and external air pressure. In this embodiment, the first fine filter 5 and the second fine filter 36 are respectively provided with air leakage holes, and the first fine filter 5 and the second fine filter 36 are equipped with cover plates matching the air leakage holes, The cover plate is in sealing fit with the air leakage hole, and the first fine filter 5 and the second fine filter 36 are respectively rotatably connected with the cover plate.

Preferably, in order to avoid some impurities in the air from polluting the inside of the fine filter, the air pump 47 is also equipped with a nitrogen tank 52, which is filled with nitrogen. The air pump 47 is used to transport the nitrogen gas into the first fine filter 5 and the second fine filter 36 through the first air inlet pipe 48 and the second air inlet pipe 49 respectively. In order to realize the control of the gas flow in the first air intake pipe 48 and the second air intake pipe 49 , gas metering devices are respectively arranged on the first air intake pipe 48 and the second air intake pipe 49 . By adjusting the gas metering device, the size of the airflow entering the first fine filter 5 and the second fine filter 36 can be controlled.

As shown in FIG. 3 , preferably, a cold heat exchanger 43 is also included, and the cold heat exchanger 43 is used to exchange heat between the liquid in the feed pipe 9 and the liquid in the discharge pipe 20 . Specifically, the cold and heat exchanger 43 includes a heat conduction block 53 and a thermal insulation layer 54 . A first hole structure 55 and a second hole structure 56 matching the feed pipe 9 and the discharge pipe 20 are opened inside the heat conducting block 53 . The feed pipe 7 and the discharge pipe 22 pass through the first hole structure 52 and the second hole structure 53 respectively, and the first hole structure 52 communicates with the second hole structure 53, that is, the outer wall of the feed pipe 9 is connected to the discharge pipe 9. The outer sidewalls of the tubes 20 may be in direct contact to further increase the rate of heat exchange. The thermal insulation layer 54 is wrapped outside the heat conduction block 53 for reducing the heat exchange rate between the heat conduction block 53 and the environment.

The working process of the low temperature filter system with self-cleaning function is as follows:

As shown in Figure 2, when the filter system is in the initial state, all the valves are in the closed state, and all the motors are in the non-working state. When the filter system needs to enter the working state, then at first open the first valve 10, the second valve 12, the third valve 13, start the first motor 11, the cold and heat exchanger 43, the cold and heat exchange mechanism 2, so that the original liquid of the wine body passes through The first valve 10, the first motor 11, the cold and heat exchanger 43, and the second valve 12 reach the cold and heat exchange mechanism 2, and the cold and heat exchange mechanism 2 initially cools the original liquid of the wine body, and the cooled wine will pass through the third valve 13 reaches the transfer tank 3 until the transfer tank 3 is filled with wine body. Then close the first valve 10, the first motor 11, the second valve 12, open the fifth valve 17, the second motor 16, the fourth valve 15, make the wine body in the transfer tank 3 pass through the fifth valve 17, the second motor 16. The fourth valve 15 returns to the cold and heat exchange mechanism 2 to cool down again, and the cooled wine will go through 13 and return to the transfer tank 3 again, repeating this many times until the temperature of the wine body in the transfer tank 3 meets until required. Generally, the wine body temperature in the transfer tank 3 can be controlled at -1°C to -5°C. After the wine body temperature in the transfer tank 3 reaches the requirement, close the fourth valve 15, the second motor 16, the fifth valve 17, and the third valve 13, and open the sixth valve 19, the twenty-first valve 44, and the seventh valve 21. Start the diatomite filter 4 and the third motor 24, so that the wine in the transfer tank 3 reaches the diatomite filter 4 through the sixth valve 19, and the lipids are filtered out by the diatomite filter 4 , the liquor after the diatomite filter 4 is processed can further arrive at the settling tank 6 through the twenty-first valve 44, the third motor 24, the heat and cold exchanger 43, and the seventh valve 21, and will be mixed into the liquor body by static precipitation Diatomaceous earth particles in the removal. When the wine body in the transfer tank 3 all arrives at the settling tank 6, the sixth valve 19, the twenty-first valve 44, the seventh valve 21 can be closed, and the diatomaceous earth filter 4 and the third motor 24 are adjusted to non-working state. After the wine body in the settling tank 6 is settled for a period of time, the tenth valve 26, the second valve 12, and the third valve 13 can be opened, the first motor 11 and the heat and cold exchange mechanism 2 are started, and the wine in the settling tank 3 The body is re-transported to the cooling and heat exchange mechanism 2 through the second return pipeline 25 and the feed pipeline 9, and the temperature of the precipitated wine body is realized by the cooling and heat exchange mechanism 2. After being processed by the cooling and heat exchange mechanism 2, the wine body is The third valve 13 reaches the transfer tank 3 again. When the wine body in the sedimentation tank 6 is all transferred to the transfer tank 3, the tenth valve 26 and the second valve 12 can be closed, the first motor 11 is closed, and the fourth valve 15, the second motor 16, and the fifth valve are opened simultaneously. 17. Use the first return pipeline 14 to send the wine body in the transfer tank 3 back to the heat and cold exchange mechanism 2 again, so as to realize a cycle cooling process similar to the above cooling process, until the temperature of the wine body in the transfer tank 3 meets the requirements. Once the wine body in the transfer tank 3 satisfies the fine filtration requirements, close the third valve 13, the fifth valve 17, the second motor 16, and the fourth valve 15 in time, and open the eleventh valve 27, the fourth motor 28, and the tenth valve. Two valves 29, the fifteenth valve 37, the thirteenth valve 30, the third motor 24, and the ninth valve 23 start the first fine filter 5 and the second fine filter 36, so that the low-temperature wine body in the transfer tank 3 passes through successively The first fine filter 5 and the second fine filter 36 realize the fine filtration treatment of the wine body, and the fine filtered wine body reaches the discharge pipeline 20 through the thirteenth valve 30, and is transported to the finished product tank 8 by the discharge pipeline 20 . After the wine body in the transfer tank 3 is all transferred to the finished product tank 8, the eleventh valve 27, the fourth motor 28, the twelfth valve 29, the fifteenth valve 37, the thirteenth valve 30, the third valve can be closed. Motor 24, the ninth valve 23. Then, open the twenty-second valve 45, the sixteenth valve 38, the seventeenth valve 40, the fourteenth valve 34, the eighteenth valve 42, the eighth valve 22, start the fifth motor 32, the heating device 35, the Three motors 24 make part of the finished wine body reach the heating device 35 through the 22nd valve 45 and the 5th motor 32, and are heated and heated by the heating device 35, and the wine body after the temperature rise passes through the 16th valve 38 and the Seventeen valves 40 arrive at the liquid outlet of the first fine filter 5 and the liquid outlet of the second fine filter 36, and the wine after heating will flow from the liquid outlet of the first fine filter 5 and the outlet of the second fine filter 36 respectively. The liquid port reversely enters the first fine filter 5 and the second fine filter 36, and backwashes the filter membrane group in the first fine filter 5 and the second fine filter 36, and the first fine filter 5 and the second fine filter 36 The backwash liquid in the backwash will flow out from the liquid inlet of the first fine filter 5 and the liquid inlet of the second fine filter 36 respectively, and flow to the discharge pipe 20 through the reverse output pipeline 33 and the reverse output branch 41, It is transported to the waste liquid tank 7 by the discharge pipeline 20, and then the backwashing process of the first fine filter 5 and the second fine filter 36 is completed. After all the backflushing liquid is delivered to the waste liquid tank 7, close the twenty-second valve 45, the sixteenth valve 38, the seventeenth valve 40, the fourteenth valve 34, the eighteenth valve 42, the eighth valve 22, The fifth motor 32, the heating device 35, and the third motor 24 are sufficient. Of course, the backwash liquid in the first fine filter 5 and the second fine filter 36 can also be transported to the settling tank 6 through the discharge pipeline 20 for sedimentation and subsequent treatment to achieve purification and reuse.

Generally, in order to improve the efficiency of backwashing, before using the finished liquid to backwash the fine filter, the nineteenth valve 50 and the twentieth valve 51 can be opened earlier, and the covers on the first fine filter 5 and the second fine filter 36 can be unscrewed Plate, so that the leak hole is in an open state, and start the air pump 47 at the same time. Nitrogen is squeezed into the first fine filter 5 and the second fine filter 36 through the liquid outlet of the first fine filter 5 and the liquid outlet of the second fine filter 36 respectively by the air pump 47, and the impurities in the filter holes are carried out by the air flow Pre-flushing reduces resistance for subsequent liquid flushing, which is conducive to further improving backwashing effect and improving backwashing efficiency.

Apparently, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the implementation of the present invention. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. All modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the claims of the present invention.

Claims (10)

1. A low-temperature filtration system with self-cleaning function, characterized in that it includes a stock solution tank (1), a cold and heat exchange mechanism (2), a transfer tank (3), a diatomaceous earth filter (4), a first fine filter Filter (5), sedimentation tank (6), finished product tank (8) and waste liquid tank (7); the liquid outlet of the raw liquid tank (1) passes through the feed pipe (9) and the cold and heat exchange mechanism (2) connected to the liquid inlet, the feed pipe (9) is provided with the first valve (10), the first motor (11) and the second valve (12) in sequence, and the second valve (12) is close to the cold and heat exchange mechanism (2 ) setting, the liquid outlet of the cold and heat exchange mechanism (2) communicates with the liquid inlet of the transfer tank (3) through the third valve (13); A first return pipe (14) is connected between the liquid inlet of the cold and heat exchange mechanism (2), and one end of the first return pipe (14) is connected with the liquid inlet of the cold and heat exchange mechanism (2), and the other end passes The valve (15), the second motor (16) and the fifth valve (17) are connected to the liquid outlet of the transfer tank (3); A branch pipe (18) is connected between the liquid outlet of the transfer tank (3) and the fifth valve (17). One end of the branch pipe (18) communicates with the liquid outlet of the transfer tank (3), and the other end passes through the The six valves (19) are connected with the liquid inlet of the diatomite filter (4); the liquid outlet of the diatomite filter (4) is connected with a discharge pipe (20), and one end of the discharge pipe (20) is connected to the The liquid outlet of the diatomite filter (4) is connected, and the other end is respectively connected to the sedimentation tank (6) and the waste liquid tank (7) through the seventh valve (21), the eighth valve (22), and the ninth valve (23). ) and the liquid inlet of the finished product tank (8), the third motor (24) is installed on the discharge pipe (20); and the feed pipe (9) is connected between the first motor (11) and the first valve (10) There is also a second return pipe (25) between them. One end of the second return pipe (25) is connected to the feed pipe (9), and the other end is connected to the liquid outlet of the sedimentation tank (6) through the tenth valve (26). Connected; The transfer tank (3) is also provided with a fine filter output port, and the fine filter output port of the transfer tank (3) passes through the eleventh valve (27), the fourth motor (28), the twelfth valve (29) and the The liquid inlet of the first fine filter (5) is connected, and the liquid outlet of the first fine filter (5) is connected with the discharge pipe (20) through the thirteenth valve (30); the thirteenth valve (30) There is also a cleaning pipe (31) connected to the liquid outlet of the first fine filter (5). One end of the cleaning pipe (31) is connected to the liquid outlet of the first fine filter (5), and the other end is passed through the fifth motor. (32) is connected with the liquid outlet of the finished product tank (8), and the cleaning pipe (31) is used to reversely transfer the liquid in the finished product tank (8) from the liquid outlet of the first fine filter (5) to the first In the fine filter (5); and a reverse output pipeline (33) is also connected between the liquid inlet of the first fine filter (5) and the twelfth valve (29), and the reverse output pipeline (33 ) one end communicates with the discharge pipe (20), and the other end communicates with the liquid inlet of the first fine filter (5) through the fourteenth valve (34). 2. A low-temperature filtration system with self-cleaning function according to claim 1, characterized in that a heating device (35) is installed on the cleaning pipeline (31), and the heating device (35) is installed on the fifth motor Between (32) and the liquid outlet of the first fine filter (5), the heating device (35) is used to heat the liquid for cleaning the pipeline (31). 3. A low-temperature filtration system with self-cleaning function according to claim 2, characterized in that it further comprises a second fine filter (36), and the second fine filter (36) is arranged on the side of the first fine filter (5). Between the liquid outlet and the thirteenth valve (30); the liquid inlet of the second fine filter (36) communicates with the liquid outlet of the first fine filter (5) through the fifteenth valve (37), The liquid outlet of the second fine filter (36) is connected to the thirteenth valve (30); and the cleaning pipeline (31) is provided with a third The sixteenth valve (38), the cleaning pipeline (31) is also connected with a cleaning branch (39) between the sixteenth valve (38) and the heating device (35), and one end of the cleaning branch (39) is connected to the cleaning pipeline (31), the other end communicates with the liquid outlet of the second fine filter (36) through the seventeenth valve (40), and the cleaning branch (39) is set at the outlet of the second fine filter (36). Between the liquid port and the thirteenth valve (30); between the liquid inlet of the second fine filter (36) and the fifteenth valve (37), there is also a reverse output branch (41), and the reverse output branch One end of the road (41) communicates with the liquid inlet of the second fine filter (36), and the other end communicates with the reverse output pipeline (33) through the eighteenth valve (42). 4. A low-temperature filtration system with self-cleaning function according to claim 3, characterized in that it also includes an air pump (47), the liquid outlet of the first fine filter (5) and the sixteenth valve (38 ) is connected with a first air inlet pipe (48), and a second air inlet pipe (49) is connected between the liquid outlet of the second fine filter (36) and the seventeenth valve (40). The air intake pipe (48) and the second air intake pipe (49) are respectively connected to the air pump (47) through the nineteenth valve (50) and the twentieth valve (51), and the air pump (47) is used to pass The first air intake pipe (48) and the second air intake pipe (49) reversely transport gas into the first fine filter (5) and the second fine filter (36) respectively, and the first fine filter (5) and The second fine filter (36) is respectively equipped with a pressure regulating device for regulating internal and external air pressure. 5. A low-temperature filtration system with self-cleaning function according to claim 4, characterized in that, the air pump (47) is also equipped with a nitrogen tank (52), and the nitrogen tank (52) is filled with nitrogen, and the The air pump (47) is used to transport the nitrogen gas into the first fine filter (5) and the second fine filter (36) respectively through the first air intake pipe (48) and the second air intake pipe (49). 6. A low-temperature filtration system with self-cleaning function according to claim 4, characterized in that, the first air inlet pipe (48) and the second air inlet pipe (49) are respectively equipped with gas metering devices. 7. A low-temperature filtration system with self-cleaning function according to claim 1, characterized in that it also includes a cold heat exchanger (43), and the cold heat exchanger (43) is used to make the feed pipe (9 ) exchanges heat with the liquid in the discharge pipe (20). 8. A low-temperature filtration system with self-cleaning function according to claim 7, characterized in that, the cold and heat exchanger (43) comprises a heat conducting block (53) and an insulating layer (54), and the heat conducting block The inside of the body (53) is provided with a first hole structure (55) and a second hole structure (56) matching the feed pipe (9) and the discharge pipe (20). The outside of the block (53) is used to reduce the heat exchange rate between the heat conducting block (53) and the environment. 9. A low-temperature filtration system with self-cleaning function according to claim 1, characterized in that, the cold and heat exchange mechanism (2) is equipped with a refrigerant tank (57), a cold and heat exchange module (58) and Compressor (59), the refrigerant stored in the refrigerant tank (57) is used to exchange heat with the liquid passing through the cold and heat exchange mechanism (2), and the compressor (59) is used to pass through the cold and heat exchange module (58) Cool down the refrigerant. 10. A low-temperature filtration system with self-cleaning function according to claim 1, characterized in that, the transfer tank (3) is equipped with a temperature detection device; the liquid outlet of the finished product tank (8) is equipped with There is a liquid metering device.