Emulsion circulating system

Abstract

The utility model relates to the technical field of cold rolling production, and particularly discloses an emulsified liquid circulating system which comprises an emulsified liquid tank, an emulsified liquid conveying pipeline, an emulsified liquid return pipeline, a filtering unit connected between a clean liquid tank and a turbid liquid tank, a steam recycling unit and a circulating heating unit, the steam recovery unit comprises an emulsified liquid collecting cover arranged above the rolling mill, the emulsified liquid collecting cover is connected with a steam recovery pipeline, the steam recovery pipeline is sequentially connected with a condenser and a fan, a water outlet of the condenser is connected with a turbid liquid box, the circulating heating unit comprises a circulating heating pipeline, and a circulating pump and a heat exchanger are arranged on the circulating heating pipeline. The inlet and outlet of the heat exchanger are respectively connected with a steam pipeline and a turbid liquid tank. By arranging the steam recovery unit, emulsion steam can be collected and recycled, the consumption of emulsion is reduced, meanwhile, condensate water at the outlet of the heat exchanger is connected into the turbid liquid box for water supplementing, the use amount of desalted water can be reduced, and the production cost is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cold rolling production, in particular to an emulsion circulation system. Background Art

[0002] Emulsions are usually composed of water, oil, emulsifiers and other additives, and are used to cool and lubricate cutting tools and workpieces to improve processing efficiency and surface quality. During high-temperature processing operations, the emulsion will evaporate due to heat, producing steam containing oil mist, water vapor and other tiny particles, which not only pollutes the workshop environment and affects the health of workers, but also causes waste of emulsions, resulting in high production costs. In addition, due to the loss of water caused by evaporation, the concentration of the emulsion will gradually increase. Excessive concentration will affect processing accuracy and quality. Therefore, it is necessary to continuously add desalted water to the emulsion, which consumes a lot of water and has high processing costs for desalted water.

[0003] Therefore, it is necessary to propose an improvement to overcome the defects of the prior art. Utility Model Content

[0004] The utility model aims to solve the problems in the prior art and provide an emulsion circulation system.

[0005] The technical solution of the utility model is:

[0006] An emulsion circulation system comprises an emulsion tank, an emulsion delivery pipeline, and an emulsion return pipeline. The emulsion tank comprises a clean liquid tank and a turbid liquid tank. Both ends of the emulsion delivery pipeline are respectively connected to the clean liquid tank and a rolling mill. A recovery tank is arranged below the rolling mill. Both ends of the emulsion return pipeline are respectively connected to the recovery tank and the turbid liquid tank. The system also comprises a steam recovery unit and a circulation heating unit. The steam recovery unit comprises an emulsion collecting hood arranged above the rolling mill. The emulsion collecting hood is connected to the steam recovery pipeline. The steam recovery pipeline is connected to a condenser and a fan in sequence. The water outlet of the condenser is connected to the turbid liquid tank. The circulation heating unit comprises a circulation heating pipeline. Both ends of the circulation heating pipeline are respectively connected to the turbid liquid tank to form a loop. A circulation pump and a heat exchanger are arranged on the circulation heating pipeline. The inlet and outlet of the heat exchanger are respectively connected to the steam pipeline and the turbid liquid tank. By setting up a steam recovery unit, the emulsion vapor can be collected and recycled to reduce the consumption of emulsion. At the same time, the condensed water at the heat exchanger outlet is connected to the turbid liquid tank for water replenishment, which can reduce the use of desalted water and further reduce production costs.

[0007] Optionally, a filter unit is connected between the clean liquid tank and the turbid liquid tank, the filter unit includes a filter pump and a filter device, one end of the filter pipeline is connected to the turbid liquid tank, and the other end of the filter pipeline is connected to the filter pump and the filter device in sequence and then connected to the clean liquid tank. The emulsion in the turbid liquid tank is filtered by the filter device and then flows into the clean liquid tank for recycling.

[0008] Optionally, the filter residue outlet of the filter device is connected to the hydrocyclone through a residue conveying pipeline, a residue pump is provided on the residue conveying pipeline, the upper part of the hydrocyclone is connected to the turbid liquid tank through an overflow pipe, a waste residue outlet is provided at the bottom of the hydrocyclone, and a waste residue tank is provided below the waste residue outlet. By providing a hydrocyclone to further centrifugally separate the residue after filtering by the filter, the separated liquid flows into the turbid liquid tank through the overflow pipe for reuse, which can further reduce the consumption of emulsion and reduce production costs.

[0009] Optionally, the filtering device includes a first filter and a second filter, and the filter residue outlets of the first filter and the second filter are both connected to the hydrocyclone. By setting up a two-stage filter, the first filter first filters the large particles, and the filtered emulsion enters the second filter to further filter the magnetic substances. The two-stage filtration ensures the quality of the filtered emulsion, which is conducive to improving processing efficiency.

[0010] Optionally, the turbid liquid tank is connected with a desalted water pipeline, and a desalted water valve is arranged on the desalted water pipeline. When the concentration of the emulsion is too high, the desalted water valve can be opened to add desalted water to the emulsion for dilution.

[0011] Optionally, the clean liquid tank is connected to an emulsion replenishment pipeline, and an emulsion replenishment valve is arranged on the emulsion replenishment pipeline. When necessary, the emulsion replenishment valve is opened to replenish the emulsion into the clean liquid tank through the emulsion replenishment pipeline.

[0012] Optionally, the steam recovery unit further comprises a check valve, which is arranged between the condenser and the fan, and the condenser is connected to the turbid liquid tank via a condensate collection pipeline. The check valve is arranged to prevent the steam from flowing back.

[0013] Optionally, the heat exchanger outlet is connected to the turbid liquid tank through a condensate return pipeline, a condensate tank is provided on the condensate return pipeline, a condensate tank outlet valve is provided at the condensate tank outlet, and a steam valve is provided on the steam pipeline. The condensate tank outlet valve can be opened to add condensate to the turbid liquid tank.

[0014] Optionally, a partition is provided in the emulsion tank, a gap is left between the partition and the top of the emulsion tank, and the emulsion tank is divided into a clean liquid tank and a turbid liquid tank by the partition.

[0015] Optionally, a thermometer and a liquid level meter are provided in the emulsion tank, and a concentration detection device is provided on the emulsion delivery pipeline, so as to monitor the temperature of the emulsion, the liquid level in the emulsion tank, and the concentration of the emulsion.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. By setting up a steam recovery unit, the emulsion is condensed and recovered by the condenser and then flows into the turbid liquid tank for repeated use, which can reduce the pollution of the emulsion vapor to the environment, and at the same time reduce the consumption of the emulsion and the fluctuation of the emulsion concentration;

[0018] 2. The condensed water at the heat exchanger outlet flows back into the turbid liquid tank to replenish the emulsion, which can reduce the amount of desalted water and reduce production costs;

[0019] 3. By centrifuging the residue after filtration, the separated liquid further flows into the turbid liquid tank for reuse, further reducing the consumption of emulsion and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the emulsion circulation system of the utility model;

[0021] Among them, 1. emulsion tank; 101. turbid liquid tank; 102. clean liquid tank; 103. partition; 2. emulsion replenishment pipeline; 3. emulsion delivery pump; 4. filtering device; 5. concentration detection device; 6. emulsion replenishment valve; 7. emulsion delivery pipeline; 8. recovery tank; 9. rolling mill; 10. emulsion collection cover; 11. steam recovery pipeline; 12. condenser; 13. check valve; 14. fan; 15. condensate collection pipeline; 16. desalted water valve; 17. Steam pipeline; 18. Desalted water pipeline; 19. Heat exchanger; 20. Condensate return pipeline; 21. Condensate tank; 22. Condensate tank outlet valve; 23. Residue conveying pipeline; 24. Residue pump; 25. Overflow pipe; 26. Hydrocyclone; 27. Waste residue tank; 28. Circulation pump; 29. ​​Filter pump; 30. Thermometer; 31. Liquid level gauge; 32. Steam valve; 33. Emulsion return pipeline; 34. Circulation heating pipeline; 35. Filter pipeline. DETAILED DESCRIPTION

[0022] In order to make the technical means, technical features, utility model objectives and technical effects achieved by the utility model easy to understand, the utility model is further explained below with reference to specific illustrations.

[0023] like Figure 1 As shown, an emulsion circulation system of the utility model comprises an emulsion tank 1, an emulsion delivery pipeline 7, an emulsion return pipeline 33, a filtering unit, a steam recovery unit and a circulation heating unit.

[0024] A partition 103 is provided in the emulsion tank 1, and a gap is left between the partition 103 and the top of the emulsion tank 1. The emulsion tank 1 is divided into a clean liquid tank 102 and a turbid liquid tank 101 by the partition 103. A thermometer 30 and a liquid level meter 31 are provided in the emulsion tank 1. The two ends of the emulsion delivery pipeline 7 are respectively connected to the clean liquid tank 102 and the rolling mill 9, and the emulsion delivery pump 3 and the concentration detection device 5 are sequentially provided on the emulsion delivery pipeline 7 along the flow direction of the emulsion. The emulsion is delivered to the emulsion nozzle of the rolling mill 9 through the emulsion delivery pipeline 7. A recovery tank 8 is provided below the rolling mill 9, and the two ends of the emulsion return pipeline 33 are respectively connected to the recovery tank 8 and the turbid liquid tank 101. The used emulsion flows into the recovery tank 8 and flows into the turbid liquid tank 101 through the emulsion return pipeline 33.

[0025] The turbid liquid tank 101 is connected to a desalted water pipeline 18, and a desalted water valve 16 is provided on the desalted water pipeline 18. When the concentration of the emulsion is too high, the desalted water valve 16 can be opened to add desalted water to the emulsion for dilution. The clean liquid tank 102 is connected to an emulsion replenishing pipeline 2, and an emulsion replenishing valve 6 is provided on the emulsion replenishing pipeline 2. When necessary, the emulsion replenishing valve 6 is opened to replenish the emulsion into the clean liquid tank 102 through the emulsion replenishing pipeline 2.

[0026] The steam recovery unit includes an emulsion collection hood 10 disposed above the rolling mill 9, the emulsion collection hood 10 is connected to a steam recovery pipeline 11, and the steam recovery pipeline 11 is sequentially connected to a condenser 12, a check valve 13 and a fan 14. The water outlet of the condenser 12 is connected to a turbid liquid tank 101 through a condensed water collection pipeline 15. Under the action of the fan 14, the emulsion vapor is collected by the emulsion collection hood 10, and the emulsion vapor enters the condenser 12 along the steam recovery pipeline 11. The check valve 13 is provided to prevent the steam from flowing back. The condenser 12 condenses and recovers the steam and then transports it to the turbid liquid tank 101 for reuse, thereby reducing the consumption of the emulsion.

[0027] The circulating heating unit includes a circulating heating pipeline 34, and both ends of the circulating heating pipeline 34 are respectively connected to the turbid liquid tank 101 to form a loop. The circulating heating pipeline 34 is provided with a circulating pump 28 and a heat exchanger 19. The inlet of the heat exchanger 19 is connected to the steam pipe 17, and the steam pipe 17 is provided with a steam valve 32. The outlet of the heat exchanger 19 is connected to the turbid liquid tank 101 through the condensed water return pipeline 20, and a condensed water tank 21 is provided on the condensed water return pipeline 20, and a condensed water tank outlet valve 22 is provided at the outlet of the condensed water tank 21. The condensed water tank outlet valve 22 can be opened to add condensed water to the turbid liquid tank 101. The circulating heating unit heats the emulsion in the turbid liquid tank 101 in a circulating manner to ensure that the emulsion is at the most suitable working temperature. After the heating is completed, the steam becomes condensed water and enters the condensed water tank 21. The condensed water tank 21 outlet valve 22 can be opened to add condensed water to the turbid liquid tank 101, which can reduce the use of desalted water and reduce production costs.

[0028] The filtering unit includes a filtering pump 29 and a filtering device 4. One end of the filtering pipeline 35 is connected to the turbid liquid tank 101, and the other end of the filtering pipeline 35 is connected to the filtering pump 29 and the filtering device 4 in sequence and then connected to the clean liquid tank 102. The emulsion in the turbid liquid tank 101 is filtered by the filtering device 4 and then flows into the clean liquid tank 102 for recycling. The filtering residue outlet of the filtering device 4 is connected to the hydrocyclone 26 through the residue conveying pipeline 23, and the residue conveying pipeline 23 is provided with a residue pump 24. The upper part of the hydrocyclone 26 is connected to the turbid liquid tank 101 through the overflow pipe 25, and the bottom of the hydrocyclone 26 is provided with a waste residue outlet, and a waste residue tank 27 is provided below the waste residue outlet. By setting the hydrocyclone 26, the residue filtered by the filtering device 4 is further centrifugally separated, and the separated liquid flows into the turbid liquid tank 101 through the overflow pipe 25 for reuse, which can further reduce the consumption of the emulsion and reduce the production cost.

[0029] In order to improve the filtering effect, two-stage filtering can be adopted, and a first filter and a second filter are provided, and the filter residue outlets of the first filter and the second filter are both connected to the hydrocyclone 26. By providing two-stage filters, the first filter first filters the large particles, and the filtered emulsion enters the second filter to further filter the magnetic substances. The two-stage filtration ensures the quality of the filtered emulsion, which is conducive to improving the processing efficiency.

[0030] The above description is only a preferred embodiment of the utility model, and is not intended to limit the scope of implementation of the utility model. That is, all equivalent changes and modifications made according to the content of the patent application scope of the utility model should belong to the technical scope of the utility model.

Claims

1. An emulsion circulation system, comprising an emulsion tank (1), an emulsion delivery pipeline (7), and an emulsion return pipeline (33), wherein the emulsion tank (1) comprises a clean liquid tank (102) and a turbid liquid tank (101), the two ends of the emulsion delivery pipeline (7) are respectively connected to the clean liquid tank (102) and a rolling mill (9), a recovery tank (8) is provided below the rolling mill (9), and the two ends of the emulsion return pipeline (33) are respectively connected to the recovery tank (8) and the turbid liquid tank (101), characterized in that: It also includes a steam recovery unit and a circulation heating unit. The steam recovery unit includes an emulsion collection hood (10) arranged above the rolling mill (9). The emulsion collection hood (10) is connected to a steam recovery pipeline (11). The steam recovery pipeline (11) is connected to a condenser (12) and a fan (14) in sequence. The water outlet of the condenser (12) is connected to a turbid liquid tank (101). The circulation heating unit includes a circulation heating pipeline (34). Both ends of the circulation heating pipeline (34) are respectively connected to the turbid liquid tank (101) to form a loop. A circulation pump (28) and a heat exchanger (19) are arranged on the circulation heating pipeline (34). The inlet and outlet of the heat exchanger (19) are respectively connected to the steam pipeline (17) and the turbid liquid tank (101).

2. An emulsion circulation system according to claim 1, characterized in that: A filter unit is connected between the clean liquid tank (102) and the turbid liquid tank (101), the filter unit comprising a filter pump (29) and a filter device (4); one end of the filter pipeline (35) is connected to the turbid liquid tank (101), and the other end of the filter pipeline (35) is connected to the filter pump (29) and the filter device (4) in sequence and then connected to the clean liquid tank (102).

3. An emulsion circulation system according to claim 2, characterized in that: The filtration residue outlet of the filtering device (4) is connected to the hydrocyclone (26) via a residue conveying pipeline (23); a residue pump (24) is provided on the residue conveying pipeline (23); the upper part of the hydrocyclone (26) is connected to the turbid liquid tank (101) via an overflow pipe (25); a waste residue outlet is provided at the bottom of the hydrocyclone (26); and a waste residue tank (27) is provided below the waste residue outlet.

4. An emulsion circulation system according to claim 3, characterized in that: The filtering device (4) comprises a first filter and a second filter, and the filtering residue outlets of the first filter and the second filter are both connected to the hydrocyclone (26).

5. The emulsion circulation system according to claim 1, characterized in that: The turbid liquid tank (101) is connected to a desalted water pipeline (18), and a desalted water valve (16) is provided on the desalted water pipeline (18).

6. The emulsion circulation system according to claim 1, characterized in that: The clean liquid tank (102) is connected to an emulsion replenishment pipeline (2), and an emulsion replenishment valve (6) is provided on the emulsion replenishment pipeline (2).

7. The emulsion circulation system according to claim 1, characterized in that: The steam recovery unit further comprises a check valve (13), wherein the check valve (13) is arranged between the condenser (12) and the fan (14), and the condenser (12) is connected to the turbid liquid tank (101) via a condensed water collection pipeline (15).

8. The emulsion circulation system according to claim 1, characterized in that: The outlet of the heat exchanger (19) is connected to the turbid liquid tank (101) via a condensate return pipeline (20); a condensate tank (21) is provided on the condensate return pipeline (20); a condensate tank outlet valve (22) is provided at the outlet of the condensate tank (21); and a steam valve (32) is provided on the steam pipeline (17).

9. An emulsion circulation system according to any one of claims 1 to 8, characterized in that: A partition (103) is provided in the emulsion tank (1), a gap is left between the partition (103) and the top of the emulsion tank (1), and the emulsion tank (1) is divided into a clean liquid tank (102) and a turbid liquid tank (101) by the partition (103).

10. An emulsion circulation system according to claim 9, characterized in that: The emulsion tank (1) is provided with a thermometer (30) and a liquid level meter (31), and the emulsion delivery pipeline (7) is provided with a concentration detection device (5).

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