CN209835851U - Waste cutting fluid purifying device - Google Patents

Abstract

The utility model relates to the technical field of machining waste water treatment, and specifically discloses a waste cutting fluid purification device, which comprises a waste cutting fluid collection box, a waste cutting fluid inlet pipe, a sewage pump, a waste cutting fluid outlet pipe, a casing, an electrode group, a DC Power supply, first partition, second partition, third partition, oil sludge collection tank, liquid discharge collection pipe, scroll pump, gas delivery pipe, ozone generator, container water pipe, first liquid discharge pipe, liquid discharge Collection box, second outlet pipe, lye delivery pipe, lye metering pump, lye tank, emulsion delivery pipe, emulsion metering pump, emulsion tank, antirust agent delivery pipe, antirust agent metering pump, antirust agent Rust agent tank, mixer, third liquid outlet pipe, mixing reaction tank, mixer, floating oil collection weir and fourth liquid outlet pipe. The utility model can utilize the principles of electrolysis and coagulation to carry out various physical and chemical actions such as redox, neutralization, coagulation and air flotation separation on the pollutants in the waste water, and quickly and effectively complete the sewage treatment.

Description

Waste cutting fluid purification device

technical field

The utility model relates to the technical field of machining waste water treatment, in particular to a waste cutting fluid purification device.

Background technique

In the process of modern metal processing, emulsified cutting fluid is an industrial liquid used to improve the cutting effect. Emulsified cutting fluid is widely used because of its good cooling, lubrication, anti-rust, anti-corrosion, cleaning and other functions. During use, the emulsified cutting fluid decomposes to varying degrees and deteriorates, resulting in reduced performance. Therefore, new emulsified cutting fluid should be replaced regularly.

With the rapid development of industry, the discharge of this oily sewage is increasing day by day. In addition to the hazards of general oily wastewater, waste emulsions are highly dispersed in water due to the action of surfactants, which are easier for animals, plants and aquatic organisms to absorb, and surfactants themselves are also harmful to organisms, and can also make some insoluble Toxic substances in the water are dissolved and need to be treated to meet the local regulated wastewater treatment standards before they can be discharged. In my country, the high-concentration and emulsified oily wastewater discharged from mechanical processing has not been well treated. The main reason is that with the improvement of technology, the stability of the emulsion is getting higher and higher, and it is more and more difficult to break the emulsion. Domestic and foreign treatment of such wastewater mainly use chemical demulsification, chemical electrolysis, activated carbon adsorption or ultrafiltration (or reverse osmosis) and other treatment technologies. It is widely used because of its low requirements on raw water quality, simple treatment process and equipment, convenient operation, low energy consumption, and it is suitable for large, medium and small enterprises to treat waste emulsions.

It is precisely because the cutting fluid will pollute and damage the environment and the human body, the use of cutting fluid and the treatment of waste fluid have been increasingly restricted by environmental protection regulations. Research and promotion of effective cutting fluid wastewater treatment equipment and treatment technology has become an important topic in the application research of cutting fluid wastewater.

Utility model content

The purpose of the utility model is to provide a waste cutting fluid purification device to provide a system capable of effectively treating cutting fluid waste water.

In order to solve the above technical problems, the utility model provides a waste cutting fluid purification device, which includes a waste cutting fluid collection box, a waste cutting fluid inlet pipe, a sewage pump, a waste cutting fluid outlet pipe, a casing, an electrode group, a DC power supply, a The first partition, the second partition, the third partition, the sludge collection tank, the liquid collection pipe, the scroll pump, the gas delivery pipe, the ozone generator, the container water pipe, the first liquid pipe, the liquid collection box, The second outlet pipe, lye delivery pipe, lye metering pump, lye tank, emulsion delivery pipe, emulsion metering pump, emulsion tank, antirust agent delivery pipe, antirust agent metering pump, antirust agent box , a mixer, a third liquid outlet pipe, a mixing reaction tank, an agitator, a floating oil collection weir, and a fourth liquid outlet pipe; one end of the waste cutting fluid inlet pipe is located in the waste cutting fluid collection box, and the other end is connected to the waste cutting fluid collection tank. The water inlet of the sewage pump is connected, the water outlet of the sewage pump is connected to the lower part of the left side of the casing through the waste cutting fluid outlet pipe, the electrode group is arranged in the casing, and the positive electrode of the DC power supply The negative poles are respectively connected to the left and right sides of the electrode group, the first baffle is vertically arranged at the lower end of the electrode group, and the second baffle is vertically arranged at the right side and the lower end of the electrode group There is an opening at the bottom of the casing, the third baffle is arranged on the right side of the second baffle, one end of the liquid outlet collecting pipe is located at the lower part of the right side of the casing, and the other end is connected to the bottom of the casing. The water inlet of the vortex pump is connected, the upper part of the shell shell is provided with a floating oil sludge collection tank, the ozone generator is connected with the air inlet of the vortex pump through the gas delivery pipe, and the water pipe of the container One end of the vortex pump is connected to the water outlet of the scroll pump, the other end is located at the lower part of the housing, the liquid outlet collection tank is connected to the liquid outlet collection pipe through the first liquid outlet pipe, and the mixer is connected to the outlet liquid collection pipe through the first outlet pipe. The second liquid outlet pipe is connected to the liquid outlet collection box, the lye tank is connected to the second liquid outlet pipe through the lye metering pump and the lye delivery pipe, and the emulsion tank is connected to the second liquid outlet pipe through the lye liquid delivery pipe. The emulsion metering pump and the emulsion delivery pipe are connected to the second outlet pipe, and the antirust agent tank is connected to the second outlet pipe through the antirust agent metering pump and the antirust agent delivery pipe. , the lower part of the mixing reaction tank is connected to the mixer through the third outlet pipe, the upper part of the mixing reaction tank is provided with a floating oil collection weir, and the output shaft of the mixer is located in the mixing reaction tank Inside, the middle part of the mixing reaction tank is connected with the fourth outlet pipe.

Preferably, a regulating valve is provided on the waste cutting fluid inlet pipe.

Preferably, the waste cutting fluid outlet pipe is provided with a regulating valve, a flow meter, a regulating valve, a sampling valve and a pressure gauge in sequence.

Preferably, one end of the container water pipe is located between the second partition and the third partition.

Preferably, regulating valves are provided on both sides of the connection between the liquid outlet collecting pipe and the first liquid outlet pipe, and regulating valves are provided on the first liquid outlet pipe.

Preferably, the gas delivery pipe is provided with a flow meter and a regulating valve, and the dissolved air outlet pipe is provided with a regulating valve, a flow meter, a regulating valve, a pressure gauge and a regulating valve in sequence.

Preferably, regulating valves are provided on both sides of the connection between the second liquid outlet pipe and the lye delivery pipe, and regulating valves are provided on the third liquid outlet pipe.

Preferably, a floating oil discharge pipe is connected to the bottom of the oil floating collection weir, and a regulating valve is arranged on the floating oil discharging pipe.

Preferably, a floating sludge discharge pipe is connected to the bottom of the floating sludge collection tank.

Preferably, a regulating valve is provided on the fourth liquid outlet pipe, and a new liquid tank is provided at the water outlet of the fourth liquid outlet pipe.

The waste cutting fluid purification device of the utility model uses electrolysis and coagulation principles to perform various physical and chemical actions on pollutants in waste water, such as redox, neutralization, coagulation, and air flotation separation, and quickly completes sewage (waste) water treatment. Other treatment methods for emulsified cutting fluid, the method and device for purifying cutting fluid and preparing new fluid have the advantages of small footprint, no need to add chemicals, avoid secondary pollution, stable processing efficiency, fully automatic control of operation and cleaning, and low professional requirements for operators , Fast processing speed and so on. The electrocoagulation method is divided into multiple electrocoagulation purification areas separated by multiple parallel partitions. The up and down baffle water flow is used to flow, so that the electrocoagulation reaction can be carried out for a longer period of time, and the treatment efficiency is enhanced. The waste cutting fluid is treated by water flotation after the electrocoagulation reaction, and the aggregates generated by the coagulation reaction are sterilized and separated into floating oil, larger solids and purified water by means of ozone air flotation separation, which improves the The water quality will not cause secondary pollution. Finally, the floating oil and suspended solids are collected and processed by the floating sludge collection tank, and the clean water is discharged. This method makes the separation speed of oil and cement fast, shortens the separation time, consumes less power, and has simple equipment and low cost. , The effect is good, effectively reducing the cost of waste cutting fluid treatment, and improving the operating environment of the workshop. The liquid outlet collection pipe for air flotation separation is shared with the dissolved air inlet water collection pipe, which means that the water inlet of the vortex pump can use the purified water after preliminary separation to achieve the effect of recycling. After the liquid pipe enters the discharge liquid collection box, it is used to prepare new liquid for industrial cutting and reuse. Both air flotation and preparation of new liquid can achieve the effect of recycling.

Description of drawings

Fig. 1 is a schematic structural diagram of a waste cutting fluid purification device according to an embodiment of the present invention.

In the figure, 1: Waste cutting fluid collection box; 2: Waste cutting fluid inlet pipe; 3: Regulating valve; 4: Sewage pump; 5: Regulating valve; 6: Flow meter; 7: Sampling valve; 8: Pressure gauge; 9 : Waste cutting fluid outlet pipe; 10: Shell; 11: Electrode group; 12: DC power supply; 13: First partition; 14: Second partition; 15: Third partition; 16: Sludge collection tank; 17 : clapboard; 18: sludge discharge pipe; 19: liquid outlet collection box; 20: liquid outlet collection pipe; 21: regulating valve; 22: regulating valve; 23: regulating valve; 24: first liquid outlet pipe; 25: Scroll pump; 26: regulating valve; 27: flow meter; 28: regulating valve; 29: pressure gauge; 30: regulating valve; 31: dissolved air outlet pipe; 32: ozone generator; 33: regulating valve; 34: gas Flow meter; 35: gas delivery pipe; 36: second outlet pipe; 37: regulating valve; 38: lye tank; 39: lye metering pump; 40: lye delivery pipe; 41: emulsion tank; 42: Emulsion metering pump; 43: emulsion delivery pipe; 44 antirust agent box; 45: antirust agent metering pump; 46: antirust agent delivery pipe; 47: regulating valve; 48: mixer; 49: regulating valve; 50 : the third liquid outlet pipe; 51: mixing reaction tank; 52: mixer; 53: liquid outlet regulating valve; 54: new liquid tank; 55: floating oil collection weir; 56: floating oil discharge pipe; 57: regulating valve; 58 : the fourth outlet pipe.

Detailed ways

The implementation of the present utility model will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the utility model, but cannot be used to limit the scope of the utility model.

In the description of the present utility model, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention. Novel and simplified descriptions do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the utility model. In addition, the terms "first" and "second" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a flexible connection. Detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations. In addition, in the description of the present utility model, unless otherwise specified, "plurality" means two or more.

As shown in Figure 1, the waste cutting fluid purification device of this embodiment includes: a waste cutting fluid collection box 1, a waste cutting fluid inlet pipe 2, a sewage pump 4, a waste cutting fluid outlet pipe 9, a casing 10, an electrode group 11, a DC Power supply 12, first partition 13, second partition 14, third partition 15, oil sludge collection tank 16, liquid discharge collection pipe 20, scroll pump 25, gas delivery pipe 35, ozone generator 32, container water pipe 31. The first liquid outlet pipe 24, the liquid outlet collection box 19, the second liquid outlet pipe 36, the lye delivery pipe 40, the lye metering pump 39, the lye tank 38, the emulsion delivery pipe 43, the emulsion metering pump 42 , emulsion tank 41, antirust agent delivery pipe 46, antirust agent metering pump 45, antirust agent box 44, mixer 48, third liquid outlet pipe 50, mixing reaction box 51, mixer 52, floating oil collection weir 55 And the fourth outlet pipe 58.

One end of the waste cutting fluid inlet pipe 2 is located in the waste cutting fluid collection box 1, and the other end is connected to the water inlet of the sewage pump 4, and the water outlet of the sewage pump 4 is connected to the lower part of the left side of the casing 10 through the waste cutting fluid outlet pipe 9. The electrode group 11 is arranged in the shell 10, the positive and negative poles of the DC power supply 12 are respectively connected to the left and right sides of the electrode group 11, the first baffle 13 is vertically arranged at the lower end of the electrode group 11, and the second baffle 14 is vertically arranged There is an opening on the right side of the electrode group 11 and the lower end and the bottom of the casing 10, the third baffle 15 is arranged on the right side of the second baffle 14, and one end of the liquid outlet collecting pipe 20 is located at the lower part of the right side in the casing 10, The other end is connected with the water inlet of the scroll pump 25, and the top in the shell shell 10 is provided with a floating sludge collection tank 16. One end is connected to the water outlet of the scroll pump 25, and the other end is located at the lower part of the casing 10. The liquid outlet collecting tank 19 is connected to the liquid outlet collecting pipe 20 through the first liquid outlet pipe 24, and the mixer 48 is connected to the second liquid outlet pipe through the second outlet pipe. 36 is connected with the liquid collection box 19, the lye tank 38 is connected with the second liquid outlet pipe 36 by the lye metering pump 39 and the lye delivery pipe 40, and the emulsion tank 41 is passed by the emulsion metering pump 42 and the emulsion delivery pipe 43 Connected with the second liquid outlet pipe 36, the antirust agent tank 44 is connected with the second liquid outlet pipe 36 through the antirust agent metering pump 45 and the antirust agent delivery pipe 46, and the bottom of the mixing reaction tank 51 passes through the third liquid outlet pipe 50 is connected with the mixer 48, the top in the mixing reaction box 51 is provided with a floating oil collection weir 55, the output shaft of the mixer 52 is located in the mixing reaction box 51, and the middle part of the mixing reaction box 51 is connected with the fourth liquid outlet pipe 58.

A regulating valve 3 is provided on the waste cutting fluid inlet pipe 2 . A regulating valve 5 , a flow meter 6 , a regulating valve 5 , a sampling valve 7 and a pressure gauge 8 are sequentially provided on the waste cutting fluid outlet pipe 9 . One end of the container water pipe 31 is located between the second partition 14 and the third partition 15 . A regulating valve 21 and a regulating valve 22 are respectively provided on both sides of the joint of the liquid outlet collecting pipe 20 with the first liquid outlet pipe 24 , and a regulating valve 23 is provided on the first liquid outlet pipe 24 . A flowmeter 34 and a regulating valve 33 are provided on the gas delivery pipe 35 , and a regulating valve 26 , a flowmeter 27 , a regulating valve 28 , a pressure gauge 29 and a regulating valve 30 are arranged on the dissolved air outlet pipe 31 in sequence. The second liquid outlet pipe 36 is provided with a regulating valve 37 and a regulating valve 47 on both sides of the joint with the lye delivery pipe 40 , and the third liquid outlet pipe 50 is provided with a regulating valve 49 . A floating oil discharge pipe 56 is connected to the bottom of the floating oil collecting weir 55, and a regulating valve 57 is arranged on the floating oil discharging pipe 56. The bottom of the oil sludge collection tank 16 is connected with an oil sludge discharge pipe 18 . A baffle 17 may be provided between the oil sludge collection tank 16 and the liquid discharge collection tank 19 . A regulating valve 53 is provided on the fourth liquid outlet pipe 58 , and a new liquid tank 54 is provided at the water outlet of the fourth liquid outlet pipe 58 .

According to the functional area, the waste cutting fluid purification device of this embodiment generally includes: a sewage pump, a scroll pump, an electrocoagulation air flotation separation system and a fresh fluid preparation system.

The waste water in the waste cutting fluid collection tank 1 is connected to one end of the sewage pump 4 through the waste cutting fluid inlet pipe 2 and the regulating valve 3, and the other end of the sewage pump 4 is connected to the waste cutting fluid outlet pipe 9, and the waste cutting fluid outlet pipe 9 is connected in turn with a regulating valve 5, a flow meter 6, a sampling valve 7, and a pressure gauge 8. The outlet enters the bottom of the electrocoagulation reaction zone in the electrocoagulation air flotation separation device 10, and the outlet enters the outside of the positive electrode separator of the electrode group in the electrocoagulation device. One end of the scroll pump 25 is connected with a gas delivery pipe 35 and a liquid collection pipe 20, the gas delivery pipe 35 is connected with an ozone generator 32, a regulating valve 33 and a gas flow meter 34, and the liquid collection pipe 20 is connected with a regulating valve 21 And regulating valve 22, the other end of scroll pump 25 is communicated with dissolved air outlet pipe 31, is connected with regulating valve 26, flowmeter 27, regulating valve 28, pressure gauge 29 and regulating valve 30 on the dissolved air pipe 31 successively, dissolving The outlet of the gas outlet pipe 31 enters between the electrode group negative separator 14 and the air flotation separator 15 in the device 10, and mixes with the electrocoagulation effluent. The electrocoagulation air flotation separation system device 10 includes an electrocoagulation system, an air flotation separation system, and an oil floating The collection system, the electrocoagulation system is composed of DC power supply 12, electrode group 11, electrode separator 13 and separators 14. The electrode group is connected to the positive and negative poles of the DC power supply. Vertical parallel separators are set in the middle and both sides of the electrode group to form a water flow. It flows in the up and down direction, enters from the bottom of the positive electrode, and finally flows out from the bottom of the outer separator of the negative electrode to the air flotation separation system; the air flotation sterilization separation system is equipped with an inclined partition, the lower end of the inclined partition is perpendicular to the bottom surface of the device, and the upper end is inclined at 60 degrees from the horizontal , the bottom between the electrocoagulation negative electrode outer separator and the inclined separator is connected to the dissolved steam outlet pipe; the lower part of the space on the other side of the inclined separator is provided with a liquid outlet collection pipe (that is, a dissolved air inlet water collection pipe), and the outlet collection pipe is connected to The valve is connected to the discharge liquid collection box outside the device; there is a floating sludge collection tank on the upper part of the electrocoagulation air flotation separation device, and the bottom of the tank is connected to the floating sludge discharge pipe. The outside of the liquid collection box is connected with the purified liquid outlet pipe. Wastewater enters the bottom of the electrocoagulation reaction zone and flows back into the electrode group through the separator. Under the action of the DC power supply 12, the anode of the two electrolysis units of the electrocoagulation device undergoes oxidation reaction and the cathode undergoes reduction reaction. In the anodic oxidation reaction, the metal anode is subjected to electrochemical action, dissolved in water in an ion state, and undergoes hydrolysis to generate metal hydroxide, which acts as a flocculant to coagulate suspended solids and colloidal impurities in wastewater; at the same time, OH in wastewater - The ions are discharged on the anode to generate oxygen, and the nascent oxygen has a strong oxidation effect on organic and inorganic pollutants in wastewater. In the reduction reaction at the cathode, metal ions obtain electrons on the cathode and are reduced, precipitate on the surface of the cathode, and some organic matter undergoes a reduction reaction; H+ is reduced to hydrogen gas after obtaining electrons, escapes in the form of tiny bubbles, and can adhere to The flocs and oily substances in the wastewater make their specific gravity smaller and float to the water surface to produce air flotation. After the electrocoagulation reaction, the water enters the air flotation separation area from the bottom of the separator 14, and the dissolved air release system of the vortex pump 25 releases dense ultra-micro ozone bubbles to generate a large number of air-bearing flocs. The density of the air-bearing flocs is the same as The density difference of cutting wastewater is large, and the particle size is much larger than the particles in the original sewage. It will automatically rise to the top of the equipment to form a slick layer. Oxygen bacteria and other bacteria, the floating oil sludge is discharged through the oil sludge collection tank 16 and the oil sludge discharge pipe 18; the purified water after air flotation rises to the top of the inclined partition 15 and then flows into the air flotation water purification area, and is collected through the bottom outlet The pipe 20 and the regulating valve 21/23 rise into the liquid collecting tank 19 through the liquid outlet pipe 24 .

The new liquid preparation system consists of a dosing system and a mixed reaction system; the clean water after electrocoagulation and air flotation separation flows from the liquid outlet collection box 19 to the purified liquid outlet pipe 36, and the purified water in the purified liquid outlet pipe 36 is sequentially separated After being merged with the three liquid medicines of lye, emulsion and antirust agent in the dosing system, they enter into the pipeline mixer 48 through the regulating valve 47 and are fully mixed. After mixing, they enter from the bottom of the mixing reaction tank 51 through the delivery pipe 50. Further mixing under the action of the mixer 52, the slick oil in the tank is discharged through the slick oil collecting weir 53 and the slick oil discharge pipe 56 plus the regulating valve 57, and the newly prepared cutting fluid flows into the new liquid tank 54 from the new liquid outlet pipe 58 . Dosing system includes lye dosing box, emulsion dosing box, antirust agent dosing box, lye dosing box, emulsion dosing box and antirust agent dosing box. The pumps are respectively connected to the purified liquid outlet pipes through their respective delivery pipes; the mixing reaction system includes a pipeline mixer, a mixing reaction tank and a new liquid tank. , the upper end of the tank is equipped with a floating oil collection weir and a floating oil discharge pipe, and a regulating valve is installed on the pipe. The nozzle corresponds to the new liquid tank, and the outlet liquid flows into the new liquid tank.

The lower part of the air flotation separation system of the electrocoagulation air flotation separation system is also provided with a dissolved air inlet water collection pipe connected with the liquid outlet collection pipe, which means that the water inlet of the vortex pump can use the clear liquid after preliminary separation to realize circulation. The effect of using. Preferably, the electrocoagulation air flotation separation system includes a plurality of electrocoagulation purification areas separated by a plurality of parallel partitions, and at the same time, the water flows in an up and down direction, and flows out after multiple electrocoagulation actions. As a preference, supports are provided at the bottom of the electrocoagulation air flotation separation system and the new liquid preparation system.

The outlet pipe of the sewage pump and the dissolved air outlet pipe of the scroll pump are equipped with flowmeters, pressure gauges and control valves. The inlet of the inlet pipe is also equipped with a gas flowmeter to control the flow. The regulating valve adjusts the flow of each part according to the actual processing capacity.

The working principle of the waste cutting fluid purification device of this embodiment is:

Electrocoagulation and air flotation separation: Wastewater from the sewage pool is sucked into the sewage pump by the waste cutting fluid inlet pipe, and then enters the bottom of the electrocoagulation reaction zone in the electrocoagulation and air flotation separation device through the waste cutting fluid outlet pipe after the sewage pump. After energization, the colloid formed by the combination of cations generated by electrolysis of soluble electrodes (iron electrodes or aluminum electrodes) and OH- (hydroxide negative ions) generated by water ionization, coagulates with pollutant particles in water, and at the same time, during the electrolysis process, the surface of the anode The generated intermediate products (such as hydroxyl radicals and atomic oxygen) also have a certain degradation effect on organic pollutants. The colloidal suspended matter and wastewater after the electrocoagulation reaction enter the air flotation separation zone from the bottom of the separator, and collide with the dissolved steam water from the dissolved air outlet pipe of the scroll pump to form a large number of air-bearing flocs. The density of the air-bearing flocs The density difference with the cutting wastewater is large, and the particle size is much larger than the particles in the original sewage. It will automatically rise to the top of the equipment to form a slick layer, which is discharged through the slick collection tank and the slick discharge pipe; at the same time, ozone has the function of disinfection and sterilization. It can effectively kill a large number of anaerobic bacteria and other bacteria that grow in the emulsion; the purified water after air flotation rises to the top of the inclined partition and then flows into the air flotation water purification area, and rises to the liquid collection through the bottom liquid collection pipe in the box.

Fresh liquid preparation system: The clean water after electrocoagulation and air flotation separation flows from the liquid discharge collection tank to the purified liquid discharge pipe, and the clean water in the liquid discharge pipe is mixed with three kinds of liquid medicines, lye, emulsion and antirust agent, respectively. After merging, they enter the pipeline mixer together to complete the full mixing. After entering from the bottom of the mixing reaction tank, they are further stirred and mixed. The slick oil in the tank is discharged through the slick oil collection weir and the slick oil discharge pipe, and the new cutting fluid flows from the new liquid outlet pipe to the in the new tank.

The waste cutting fluid purification device of the utility model uses electrolysis and coagulation principles to perform various physical and chemical actions on pollutants in waste water, such as redox, neutralization, coagulation, and air flotation separation, and quickly completes sewage (waste) water treatment. Other treatment methods for emulsified cutting fluid, the method and device for purifying cutting fluid and preparing new fluid have the advantages of small footprint, no need to add chemicals, avoid secondary pollution, stable processing efficiency, fully automatic control of operation and cleaning, and low professional requirements for operators , Fast processing speed and so on. The electrocoagulation method is divided into multiple electrocoagulation purification areas separated by multiple parallel partitions. The up and down baffle water flow is used to flow, so that the electrocoagulation reaction can be carried out for a longer period of time, and the treatment efficiency is enhanced. The waste cutting fluid is treated by water flotation after the electrocoagulation reaction, and the aggregates generated by the coagulation reaction are sterilized and separated into floating oil, larger solids and purified water by means of ozone air flotation separation, which improves the The water quality will not cause secondary pollution. Finally, the floating oil and suspended solids are collected and processed by the floating sludge collection tank, and the clean water is discharged. This method makes the separation speed of oil and cement fast, shortens the separation time, consumes less power, and has simple equipment and low cost. , The effect is good, effectively reducing the cost of waste cutting fluid treatment, and improving the operating environment of the workshop. The liquid outlet collection pipe for air flotation separation is shared with the dissolved air inlet water collection pipe, which means that the water inlet of the vortex pump can use the purified water after preliminary separation to achieve the effect of recycling. After the liquid pipe enters the discharge liquid collection box, it is used to prepare new liquid for industrial cutting and reuse. Both air flotation and preparation of new liquid can achieve the effect of recycling.

The embodiments of the invention have been presented for purposes of illustration and description, but are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and changes will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to better explain the principle and practical application of the invention, and to enable those of ordinary skill in the art to understand the invention and design various embodiments with various modifications suitable for particular purposes.

Claims (10)

1. A waste cutting fluid purification device, characterized in that it comprises a waste cutting fluid collection box (1), a waste cutting fluid inlet pipe (2), a sewage pump (4), a waste cutting fluid outlet pipe (9), a shell ( 10), electrode group (11), DC power supply (12), first separator (13), second separator (14), third separator (15), sludge collection tank (16), liquid collection Pipe (20), scroll pump (25), gas delivery pipe (35), ozone generator (32), container water pipe (31), first liquid outlet pipe (24), liquid outlet collection box (19), the first Second liquid outlet pipe (36), lye delivery pipe (40), lye metering pump (39), lye tank (38), emulsion delivery pipe (43), emulsion metering pump (42), emulsion tank (41), antirust agent delivery pipe (46), antirust agent metering pump (45), antirust agent box (44), mixer (48), third liquid outlet pipe (50), mixing reaction box (51 ), mixer (52), floating oil collection weir (55) and the fourth outlet pipe (58); one end of the waste cutting fluid inlet pipe (2) is located in the waste cutting fluid collection box (1), and the other One end is connected to the water inlet of the sewage pump (4), and the water outlet of the sewage pump (4) is connected to the lower part of the left side of the casing (10) through the waste cutting fluid outlet pipe (9). The electrode group (11) is arranged in the shell (10), the positive and negative poles of the DC power supply (12) are respectively connected to the left and right sides of the electrode group (11), and the first baffle plate (13) Vertically arranged at the lower end of the electrode group (11), the second baffle (14) is vertically arranged on the right side of the electrode group (11) and leaves a gap between the lower end and the bottom of the casing (10). Opening, the third baffle (15) is arranged on the right side of the second baffle (14), and one end of the liquid outlet collecting pipe (20) is located at the lower part of the right side of the housing (10), The other end is connected with the water inlet of the scroll pump (25), and the upper part in the shell shell (10) is provided with a floating sludge collection tank (16), and the ozone generator (32) passes through the gas delivery pipe (35) is connected with the air inlet of described scroll pump (25), and one end of described container water pipe (31) is connected with the water outlet of described scroll pump (25), and the other end is positioned at described shell (10) The lower part of the liquid outlet, the liquid outlet collection box (19) is connected with the liquid outlet collection pipe (20) through the first liquid outlet pipe (24), and the mixer (48) is connected through the second liquid outlet pipe (36) is connected with described liquid outlet collecting box (19), and described lye case (38) is by described lye metering pump (39) and lye delivery pipe (40) and described second liquid outlet pipe ( 36) connection, the emulsion tank (41) is connected with the second outlet pipe (36) through the emulsion metering pump (42) and the emulsion delivery pipe (43), and the rust inhibitor tank ( 44), connected to the second outlet pipe (36) through the antirust agent metering pump (45) and the antirust agent delivery pipe (46), and the lower part of the mixing reaction tank (51) passes through the The third liquid outlet pipe (50) is connected with the mixer (48), the top in the mixing reaction box (51) is provided with a floating oil collection weir (55), and the output shaft of the mixer (52) is located at the In the mixing reaction box (51), the middle part of the mixing reaction box (51) is connected with the fourth outlet pipe (58). 2. The waste cutting fluid purification device according to claim 1, characterized in that a regulating valve is provided on the waste cutting fluid inlet pipe (2). 3. The waste cutting fluid purification device according to claim 1, characterized in that, the waste cutting fluid outlet pipe (9) is provided with a regulating valve, a flow meter, a regulating valve, a sampling valve and a pressure gauge in sequence. 4. The waste cutting fluid purification device according to claim 1, characterized in that, one end of the container water pipe (31) is located between the second partition (14) and the third partition (15) . 5. The waste cutting fluid purification device according to claim 1, characterized in that, the outlet collecting pipe (20) is provided with regulating valves on both sides of the joint with the first outlet pipe (24). Valve, the first liquid outlet pipe (24) is provided with a regulating valve. 6. The waste cutting fluid purification device according to claim 1, characterized in that, the gas delivery pipe (35) is provided with a flow meter and a regulating valve, and the dissolved air outlet pipe (31) is sequentially provided with regulating valves. valves, flow meters, regulating valves, pressure gauges and regulating valves. 7. The waste cutting fluid purification device according to claim 1, characterized in that, the second liquid outlet pipe (36) is provided with regulating valves on both sides of the joint with the lye delivery pipe (40). Valve, the third liquid outlet pipe (50) is provided with a regulating valve. 8. The waste cutting fluid purification device according to claim 1, characterized in that, the bottom of the floating oil collection weir (55) is connected with a floating oil discharge pipe (56), and the floating oil discharge pipe (56) is Equipped with regulating valve. 9. The waste cutting fluid purification device according to claim 1, characterized in that, a floating sludge discharge pipe (18) is connected to the bottom of the floating sludge collection tank (16). 10. The waste cutting fluid purification device according to claim 1, characterized in that, the fourth liquid outlet pipe (58) is provided with a regulating valve, and the water outlet of the fourth liquid outlet pipe (58) is provided with a There is new tank (54).