CN211284024U - Process equipment for regenerating and recycling quenching liquid - Google Patents
Process equipment for regenerating and recycling quenching liquid Download PDFInfo
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- CN211284024U CN211284024U CN201922186650.0U CN201922186650U CN211284024U CN 211284024 U CN211284024 U CN 211284024U CN 201922186650 U CN201922186650 U CN 201922186650U CN 211284024 U CN211284024 U CN 211284024U
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Abstract
The utility model discloses a process equipment of regeneration and reuse of quenching liquid, this equipment contains: the device comprises a primary cavity for loading quenching liquid to be treated, an air floatation device arranged in the primary cavity, and an ultrasonic wave generating device for carrying out ultrasonic treatment on the quenching liquid loaded in the primary cavity. The utility model discloses an equipment uses ultrasonic wave technique and air floatation method to quenching waste liquid coprocessing, uses ultrasonic wave technique or air floatation method than single, perhaps uses ultrasonic wave technique and air floatation method successively effectual.
Description
Technical Field
The utility model relates to a regeneration and reuse of quenching liquid, in particular to a process device for the regeneration and reuse of quenching liquid.
Background
The quenching liquid is widely applied to the fields of material treatment and equipment processing, mainly plays a role of cooling a workpiece in the heat treatment process to ensure the uniform surface hardness and the sufficient hardening depth of the material, and has no quenching crack and small quenching deformation. The quenching liquid gradually deteriorates and deteriorates due to a series of reasons in the use process, so that the normal cooling performance of the quenching liquid is lost.
The purity of the quench liquid affects its cooling rate. The deterioration of the quenching liquid is mainly caused by the following reasons: firstly, in the process of cooling a workpiece in quenching liquid, an oxide layer generated on the surface of the workpiece due to high temperature can fall off and be mixed into the quenching liquid to be mixed with the workpiece, so that the purity of the quenching liquid is reduced, and the cooling performance of the quenching liquid is influenced; secondly, in the quenching process, antirust oil adhered to the surface of the workpiece and hydraulic oil leaked from a quenching machine tool can be mixed into the quenching liquid, so that the cooling performance of the quenching liquid is influenced. In the use process of the quenching liquid, various bacteria such as anaerobes, facultative anaerobes and the like can be bred under different temperature environment conditions, the existence of the bacteria can cause blackening and smelling of the quenching liquid, and the propagation of the bacteria and the generation of extracellular secretions can directly influence the cooling performance of the quenching liquid. However, an effective method specially aiming at the recycling of the quenching waste liquid does not exist at present, the quenching waste liquid generated by enterprises is handed over to environmental protection companies for hazardous waste harmless treatment, and the cost is high. Aiming at the three factors causing the deterioration and the deterioration of the quenching liquid, the mixing of impurities and the propagation of bacteria are easy to solve from the technical aspect, and the technology is relatively mature; however, for the problem of mixing of waste oil, the traditional oil removal process on the market is single, the oil removal effect is not thorough, the common chemical oil removal method can generate a large amount of secondary waste to pollute the environment, the air floatation method has an unsatisfactory oil removal effect on emulsified oil, the ultrasonic demulsification is difficult to remove suspended oil drops in the waste liquid, and the centrifugal method can take away some effective components due to too high rotating speed.
Since heat treatment involves almost every metal part, the amount of quench waste produced is also extremely large. Therefore, it is very important to find a treatment method which can realize the regeneration and reuse of the quenching waste liquid, reduce the emission cost and reduce the environmental pollution.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a device which has simple structure and good recovery effect on the cooling performance of quenching waste liquid and an efficient treatment process from the angle of regeneration and reuse.
In order to achieve the purpose, the utility model provides a process method for regenerating and recycling quenching liquid, which comprises the following steps: (1) taking quenching liquid to be treated, and filling the quenching liquid into a cavity; (2) treating the quenching liquid in the cavity by using an ultrasonic technology and an air floatation method simultaneously, so that the grease floats on the surface of the quenching liquid after the emulsion breaking action of the emulsified grease in the quenching liquid is realized by the ultrasonic technology and the air floatation method; (3) removing the grease floating on the surface of the quenching liquid.
Preferably, the air float process comprises: the aerated ceramics are utilized to generate nanometer-scale micro bubbles.
Preferably, in the step (2), the time for treating the quenching liquid by using the ultrasonic technology and the air floatation method is 1-3 hours.
Preferably, the method further comprises step (4): and (4) sterilizing the quenching liquid.
Preferably, the sterilization treatment mode is any one of ultraviolet lamp, ozone or photocatalysis technology.
The utility model also provides a process equipment of regeneration and reuse of quenching liquid, it contains: the device comprises a primary cavity for loading quenching liquid to be treated, an air floatation device arranged in the primary cavity, and an ultrasonic wave generating device for carrying out ultrasonic treatment on the quenching liquid loaded in the primary cavity.
Preferably, the air flotation device is a nano air flotation device.
Preferably, the air flotation device is aerated ceramic.
Preferably, the ultrasonic wave generating device comprises: the energy converter is arranged in the primary cavity, and the ultrasonic generator is arranged outside the primary cavity.
Preferably, the apparatus further comprises: and the oil scraping belt is arranged above the primary cavity.
Preferably, the apparatus further comprises: the sterilization device comprises a secondary cavity and a sterilization device arranged in the secondary cavity; a communicating pipeline is arranged between the first-stage cavity and the second-stage cavity, and the quenching liquid enters the second-stage cavity after the treatment in the first-stage cavity is finished.
Preferably, the apparatus further comprises: and the cooling device is a condensation pipe surrounding the inner wall of the primary cavity, and low-temperature liquid passes through the condensation pipe.
Preferably, the primary cavity is provided with a liquid inlet; the apparatus further comprises: and the filter is communicated with the liquid inlet.
Has the advantages that:
(1) the utility model has the advantages of safety, reliability, high efficiency, low cost, no introduction of additional chemical agents, no secondary pollution and the like. The method can quickly restore the cooling performance of the waste quenching liquid and continuously recycle the waste quenching liquid, solves the problem of high treatment cost of the waste quenching liquid in the machining industry, and is a green, environment-friendly and efficient method for treating the waste quenching liquid.
(2) The method and the equipment of the utility model use the ultrasonic technology and the air floatation method to carry out the cooperative treatment on the quenching waste liquid, and have better effect than the single use of the ultrasonic technology or the air floatation method or the sequential use of the ultrasonic technology and the air floatation method.
(3) The utility model discloses a method and equipment can effectively get rid of the emulsification state grease in the quenching waste liquid, have avoided the conventional method of quenching waste liquid retrieval and utilization, only will float in the grease on quenching waste liquid surface and get rid of the processing of emulsification state grease, lead to emulsification state grease to continue to remain in the quenching waste liquid for the cooling performance effect resumes not good problem.
Drawings
FIG. 1 is a plan view of the process equipment for recycling quench liquid of the present invention.
FIG. 2 is a front perspective view of the process equipment for recycling the quenching liquid of the present invention.
FIG. 3 is a rear view of the process equipment for recycling the quenching liquid of the present invention.
FIG. 4 is a diagram showing the index change of the maximum cooling rate of the quenching waste liquid after the quenching liquid stock solution with a certain concentration is added before and after the treatment of the equipment.
FIG. 5 shows the index change chart of the cooling rate of the quenching waste liquid at 300 ℃ after the quenching waste liquid is added before and after the treatment by the equipment.
Detailed Description
The technical solution of the present invention will be further explained with reference to the accompanying drawings and examples.
In other processes before quenching, grease (rust preventive oil, hydraulic oil and the like) adheres to the surface of the metal, and during quenching, the residual grease is brought into the quenching liquid along with the contact between the workpiece and the quenching liquid. The oil stain has important influence on the cooling performance of the quenching liquid, and the utility model discloses a utility model people find that the cooling performance of the quenching liquid can be greatly resumeed in removing the oil stain. A small part of the grease in the quenching liquid is suspended in the quenching liquid in the form of small oil drops with smaller particle size, and is free grease; most of the oil is suspended in the quenching liquid in a fine oil-in-water or water-in-oil emulsified state, so that the cooling performance of the quenching liquid is influenced, particularly, the emulsified oil changes an interface structure when the quenching liquid is in contact with the metal surface, the effect of active ingredients in the quenching liquid is seriously deviated, and the cooling performance of the quenching liquid is greatly influenced. In the quenching process, the emulsified quenching liquid such as the rust-resistant oil that hydraulic oil and work piece that the lathe was revealed brought into, though the emulsified oil content is not high, lets the people ignore easily, nevertheless the utility model discloses the people discovers that the emulsified oil can prolong the steam film stage in the quenching process, postpones the boiling stage, leads to the work piece heat can not be taken away by fast to influence the cooling performance of quenching medium, be the leading reason that leads to quenching medium cooling performance to become invalid. If only the free-state grease suspended on the surface of the quenching liquid is removed, but the emulsified-state grease is not removed, the recovery of the cooling performance of the quenching liquid is limited. In actual production, although a certain amount of dirty oil is introduced into the quenching liquid in the quenching process, the content of the dirty oil is limited, most of the oil is suspended in the quenching liquid in an emulsified state and is not easy to observe at ordinary times, so that a user easily neglects the problem of removing the oil in the quenching liquid, particularly the problem of removing the emulsified oil. And because the quenching liquid can become black and smelly due to the propagation of bacteria after being used for a period of time, the change of the taste and the color is too obvious, a user can be misled to think that the main reason for the failure of the quenching liquid is the breeding of the bacteria, and the cooling performance of the quenching liquid is not improved from the viewpoint of removing grease.
The process method for regenerating and recycling the quenching liquid comprises the following steps: (1) taking quenching liquid to be treated, and filling the quenching liquid into a cavity; (2) treating the quenching liquid in the cavity by using an ultrasonic technology and an air floatation method simultaneously, so that the grease floats on the surface of the quenching liquid after the emulsion breaking action of the emulsified grease in the quenching liquid is realized by the ultrasonic technology and the air floatation method; (3) removing the grease floating on the surface of the quenching liquid.
The particle size of oil droplets of the emulsified oil is generally 0.1-0.2 microns, and oil droplets exist in the quenching liquid for a long time, so that oil molecules and water molecules are combined very firmly, the oil droplets are made into stable emulsion, and the emulsified oil droplets are extremely difficult to remove. The emulsified oil can be removed by ultrasonic technology or air floatation technology. The utility model discloses the discovery, ultrasonic wave technique and air supporting technology synergism, its deoiling effect will be superior to the exclusive use of two kinds of techniques or use successively.
Ultrasonic oil removal is to arrange an ultrasonic generator focus in an oil removal liquid tank and to utilize the cavitation effect generated by ultrasonic waves to strengthen the oil removal process. When ultrasonic waves are applied to a liquid, instantaneous negative pressure and instantaneous positive pressure are alternately generated repeatedly. During the half period when the negative pressure is generated, vacuum cavities are generated in the liquid, and liquid vapor or gas dissolved in the solution enters the cavities to form bubbles. Then in the half period of positive pressure, the air bubble is compressed and broken, so as to instantaneously generate strong pressure and realize the separation of emulsified oil and water molecules. The effect of air supporting just lies in increaseing the air content in the liquid, the vacuum cavity that makes the ultrasonic wave produce can be quick forms a large amount of bubbles, and increase the cracked probability of bubble, make the oil drop of emulsification in the liquid can further quick separation, in addition because air supporting self can produce a large amount of vacuoles, this vacuole specific surface area is big, and the direction is from bottom to top, can adsorb free-state oil drop and the oil drop after the breakdown of emulsion as the carrier, come up in the liquid surface rapidly, make things convenient for the further separation of profit, thereby promote the effect of grease separation mutually when realizing two kinds of technological synergism.
As shown in fig. 1, the process equipment for recycling the quenching liquid of the present invention comprises: the device comprises a primary cavity for loading quenching liquid to be treated, an air floatation device 1 arranged in the primary cavity, and an ultrasonic wave generating device for carrying out ultrasonic treatment on the quenching liquid loaded in the primary cavity. Ultrasonic wave generating device contain transducer 2 and supersonic generator 3, transducer 2 establish the one-level intracavity, supersonic generator 3 establish the one-level intracavity outside.
In some embodiments, the air floating device 1 is a nano air floating device capable of generating nano-scale micro-bubbles. The nano air flotation adopts aerated ceramics.
In the ultrasonic wave generating device, the ultrasonic wave generator 3 is used for converting commercial power into a high-frequency alternating current signal matched with the ultrasonic transducer 2 and driving the transducer 2 to work. The transducer 2 is an energy conversion device whose function is to convert the electrical power input into mechanical power (i.e. ultrasound) for transmission, while consuming a small portion of the power itself (less than 10%).
Referring to fig. 2, in some embodiments, the apparatus further comprises: and the oil scraping belt 4 is arranged above the primary cavity. The oil scraping belt 4 is also called as an oil skimming belt, and removes the grease floating on the surface of the quenching liquid after being treated by the air floating device 1 and the ultrasonic generating device through physical separation and oleophylic hydrophobic process treatment by utilizing the difference of specific gravity of oil and water. The oil scraping belt 4 is communicated with the oil outlet 5, and the separated dirty oil can be discharged through the oil outlet 5.
Continuing to refer to fig. 1, in some embodiments, the apparatus further comprises: a secondary chamber, and a sterilizing device 19 installed in the secondary chamber. The sterilization mode can adopt an ultraviolet lamp, ozone or photocatalysis technology and the like. A communicating pipeline is arranged between the first-stage cavity and the second-stage cavity, and a first pneumatic diaphragm pump 6 for pumping the quenching liquid from the first-stage cavity to the second-stage cavity is arranged on the communicating pipeline. After the quenching liquid is processed in the primary cavity, the quenching liquid flows out from the outlet 13 of the primary cavity, slowly enters the secondary cavity for sterilization, and finally flows out from the liquid outlet 16.
In some embodiments, the apparatus further comprises: and a cooling device 7. The cooling device 7 is a condensation pipe surrounding the inner wall of the primary cavity, and low-temperature liquid passes through the condensation pipe. The cryogenic liquid enters at the condenser tube inlet 17 and exits at the condenser tube outlet 18. The cooling device 7 keeps the quenching liquid within the range of 25-40 ℃. During ultrasonic treatment, the liquid is heated, and the temperature is controlled by the cooling device 7, so that the recovery of the cooling performance of the quenching liquid is further improved.
In some embodiments, the primary chamber is provided with an inlet port 8. The apparatus further comprises: and the filter 9 is communicated with the liquid inlet 8 and is used for filtering out solid impurities such as a metal oxide layer and the like. A second pneumatic diaphragm pump 10 is connected between the liquid inlet 8 and the filter 9. The second pneumatic diaphragm pump 10 sucks the quenching waste liquid in the machine tool liquid tank from the liquid suction port 15.
Referring to fig. 3, in some embodiments, a level sensor 11 is disposed above the primary chamber and is automatically turned off when the device is in a non-level state. A floating ball liquid level sensor 12 is arranged in the middle of the primary cavity, and liquid feeding is automatically stopped when the liquid level reaches the position.
The whole device is connected with the quenching liquid tank in parallel, and the purpose of recycling the waste quenching liquid can be realized by circularly treating for a period of time in an on-line operation mode.
Example 1
The power supply equipment is switched on to work, at the moment, the second pneumatic diaphragm pump 10 starts to work, quenching waste liquid is sucked from the liquid suction port 15, after being filtered by the filter 9, the quenching waste liquid enters the primary cavity, the quenching waste liquid introduced into the primary cavity simultaneously passes through the vibration of the transducer 2 and the action of the aerated ceramics, wherein the transducer 2 is connected with the ultrasonic generator 3 which sends out a high-frequency oscillation signal, and ultrasonic waves are converted into mechanical vibration to be transmitted into the cavity. When ultrasonic wave acts on liquid, instantaneous negative pressure and instantaneous positive pressure are alternately generated repeatedly. In the half period of generating negative pressure, vacuum cavity is generated in the liquid, liquid vapor or gas dissolved in the solution enters the cavity, and tens of thousands of tiny bubbles are formed. Then in the half period of positive pressure, the bubbles are compressed and broken, so as to instantaneously generate strong pressure to break the oil-water interface film, thereby separating the emulsified oil from the quenching liquid. The aeration ceramic has the effects of increasing the air content in the liquid, enabling a vacuum cavity generated by ultrasonic waves to quickly form a large amount of bubbles and increasing the probability of bubble breakage, so that oil drops emulsified in the liquid can be quickly separated, and in addition, because the aeration ceramic can generate a large amount of cavitation bubbles, the cavitation bubbles are in a direction from bottom to top, the free oil drops and the oil drops after demulsification can be quickly driven to the liquid surface, so that the further separation of oil and water is facilitated. An oil scraping belt 4 is arranged above the primary cavity, the material surface of the oil scraping belt 4 has oleophilic and hydrophobic functions, and the oil scraping belt 4 is driven by a motor to rotate so as to adsorb grease floating on the liquid surface and discharge the grease from an oil discharge port 5.
A condenser pipe is arranged between the transducer 2 and the aerated ceramics in the primary cavity, the quenching liquid is subjected to circulating cooling in the treatment process, and the temperature is automatically sensed and adjusted by a temperature sensor, so that the quenching liquid is kept within the range of 25-40 ℃, and the cooling performance of the quenching liquid cannot be influenced by high temperature in the treatment process. A level sensor 11 is arranged above the primary cavity, and when the device is detected to be in a non-horizontal state, the device automatically stops. A floating ball liquid level sensor 12 is arranged on the inner wall of the middle of the primary cavity, and liquid feeding is automatically stopped when the liquid level reaches the position.
The quenching liquid after oil removal and impurity removal slowly enters the secondary cavity for sterilization under the suction action of the first pneumatic diaphragm pump 6, and the flow rate of the liquid is controlled by adjusting the air pressure of the pump, so that the quenching liquid is discharged from the liquid outlet 16 after being sterilized in the secondary cavity for a period of time. An electric control cabinet is arranged at the forward position of the equipment and can control the starting, stopping and the like of the equipment; four universal wheels 14 are arranged at two ends of the lower surface of the box body, and two directional wheels 20 are arranged in the middle of the lower surface of the box body, so that the whole equipment can be moved conveniently, the bearing of the equipment is met, and the labor intensity during carrying is reduced.
Example 2
The effectiveness of the present invention is demonstrated through the following experiments.
The method takes the quenching waste liquid which is taken from a certain crankshaft factory in Shandong and is used on site as a research object, the factory dilutes the stock solution of the quenching liquid to the concentration of 10 percent for use, and the quenching waste liquid is circularly treated for 2 hours by adopting the equipment and is separately treated for 2 hours by using an ultrasonic technology and an air floatation method with the same parameters. The air floatation method adopts aerated ceramics, and the amount of the introduced compressed air is 3-6 kg (0.3-0.6 Mpa). Wherein the power of the ultrasonic module of the equipment is 3kw, and the frequency is 40 kHz; the sterilization module is set to be in a mode based on ultraviolet lamp sterilization, the wavelength of the ultraviolet lamp is 254nm, the power is 57W, the length of the lamp tube is 357mm, and the output intensity of the ultraviolet light is 130 muW/cm2. Sampling and testing the quenching waste liquid before and after treatment, evaluating the bacterial content of the quenching waste liquid before and after treatment by adopting a flat plate counting method, testing the oil content of the quenching waste liquid before and after treatment by adopting a hydrochloric acid demulsification method, and measuring various indexes of the cooling performance of the quenching waste liquid before and after treatment by adopting a cooling performance tester.
The experimental results are as follows:
the indexes of bacteria content, oil content and cooling performance are shown in the following table:
TABLE 1
As can be seen from the table 1, the quenching liquid treated by the equipment of the utility model has obvious reduction of bacteria content and good bactericidal property; the oil content is also obviously reduced, and the oil removal rate reaches 94.0 percent, which is higher than the sum of the oil removal efficiency of the ultrasonic technology (28.6 percent) and the air floatation method (56.3 percent). Meanwhile, compared with various indexes of the cooling performance of the quenching liquid before and after treatment and the stock solution with the concentration of 10 percent, the maximum cooling speed of the quenching liquid after treatment of the utility model is obviously reduced and is closer to the numerical value of the stock solution with the concentration of 10 percent; the utility model discloses the cooling rate contrast of 300 ℃ of quenching fluid after handling has obtained obvious improvement before handling, nevertheless compares certain gap with the fresh quenching fluid of 10% concentration in addition, and the reason lies in effective concentration in the quenching waste liquid is low excessively, only 6% through detecting. Compared with the quenching liquid treated by the ultrasonic technology and the air floatation method, the quenching liquid treated by the ultrasonic technology and the air floatation method has the advantage that the cooling performance of the quenching liquid is not improved greatly.
Example 3
The effectiveness of the ultrasonic technique and the air flotation process co-treatment is further demonstrated by the following experiments. Quenching waste liquid which is taken from a certain crankshaft factory in Shandong and is used on site is taken as a research object, the quenching waste liquid is treated by adopting the equipment and an independent process, wherein the power of an ultrasonic module of the equipment is 3kw, and the frequency is 40 kHz; the sterilization module is set to be in a mode based on ultraviolet lamp sterilization, the wavelength of the ultraviolet lamp is 254nm, the power is 57W, the length of the lamp tube is 357mm, and the output intensity of the ultraviolet light is 130 muW/cm2. Sampling and testing the quenching waste liquid before and after treatment, respectively adding a small amount of quenching liquid stock solution into the quenching waste liquid before and after treatment to measure the cooling performance of the quenching waste liquid, testing the oil content of the quenching waste liquid before and after treatment by adopting a hydrochloric acid demulsification method, and measuring various indexes of the cooling performance of the quenching waste liquid before and after treatment by adopting a cooling performance tester. The filtered quench waste liquid was divided into 7 groups.
First group (S1): the sterilization module is adopted for sterilization, and the oil-water separation module is not adopted for treatment (the purpose of the experiment is to verify whether the pure sterilization is helpful to the recovery of the cooling performance of the quenching waste liquid).
Second group (S2): on the premise of not opening the sterilization module, an ultrasonic process and nano air flotation are adopted to work cooperatively for 2 hours.
Third group (S3): and on the premise of not starting the sterilization module, independently adopting an ultrasonic process to work for 2 h.
And a fourth group (S4) that the nano air flotation process is independently adopted to work for 2 hours without starting the sterilization module.
Fifth group (S5): on the premise of not opening the sterilization module, firstly adopting an ultrasonic process to work for 1 hour, and then adopting nano air flotation to treat for 1 hour.
Sixth group (S6): on the premise of not opening the sterilization module, firstly, the nano air flotation is adopted for 1 hour, and then the ultrasonic process is adopted for processing for 1 hour (S2-S6 proves that the synergistic effect processing has more obvious effect on the cooling performance recovery of the quenching waste liquid compared with the single technology for processing the quenching waste liquid).
Seventh group (S7): firstly, the ultrasonic process and the nano air flotation work cooperatively for 2 hours, and then the sterilization module is adopted for sterilization (after cooperation and sterilization, the cooling performance can be recovered by oil removal, and sterilization can be performed, and the treatment process of firstly removing oil and then sterilizing has no side effect on the cooling performance). The data processing is as follows:
table 2 the oil content and cooling performance indices are shown in the following table:
as can be seen from Table 2, the oil content of the quenching liquid treated by the equipment adopting the synergistic process is obviously reduced, the oil removal rate reaches 94.3 percent and is higher than the sum of the oil removal efficiency of the ultrasonic technology and the oil removal efficiency of the air floatation method independently, and the oil removal efficiency of the air floatation method treatment after the ultrasonic technology treatment or the air floatation method treatment before the ultrasonic technology treatment. Comparing the cooling performance index of S1 with that of the quenching waste liquid, it is found that the cooling performance of the quenching liquid is not recovered by simple sterilization. Meanwhile, comparing various indexes of the cooling performance of the quenching liquid before and after treatment and the stock solution with the concentration of 10%, the maximum cooling speed of the quenching liquid after equipment treatment is obviously reduced and is closer to the numerical value of the stock solution with the concentration of 10%; the cooling speed of the treated quenching liquid at 300 ℃ is also obviously reduced, and is obviously improved compared with that before treatment; compared with the single ultrasonic technology and the air floatation method, and the quenching liquid is treated by the air floatation method after the ultrasonic technology or the air floatation method before the ultrasonic technology, the cooling performance of the quenching liquid after the two technologies is not remarkably improved.
The quenching liquid stock solution with certain concentration is added before and after the equipment treatment, and the index of the maximum cooling speed of the quenching waste liquid is changed as shown in figure 4.
The quenching liquid stock solution with certain concentration is added before and after the equipment treatment, and the index change of the cooling rate of the quenching waste liquid at 300 ℃ is shown in figure 5.
Because the quenching liquid can take away partial effective components along with the workpiece in the using process to cause the concentration of the waste liquid to be reduced, and a small amount of stock solution is added to ensure that the concentration of the waste liquid reaches 10 percent, the quenching liquid is convenient to compare with a new liquid with the concentration of 10 percent and has contrast. As can be seen from fig. 4 and 5, the quenching waste liquid before and after being treated by the equipment is added with a small amount of stock solution, the maximum cooling speed and the cooling speed at 300 ℃ of the quenching waste liquid before being treated by the equipment are both improved, but the maximum cooling speed and the cooling speed at 300 ℃ of the quenching waste liquid before being treated by the equipment are greatly different from those of the stock solution with the concentration of 10%, and the quenching waste liquid after being treated by the equipment only needs to be added with 4% of the stock solution, and the maximum cooling speed and the cooling speed at 300 ℃ of the quenching waste liquid are basically the same as those of the stock solution with the concentration of 10% (see table 2 for the cooling performance of the stock solution with the concentration of 10%).
To sum up, the method and the device of the utility model use the ultrasonic technology and the air floatation method to carry out the cooperative treatment on the quenching waste liquid, can quickly restore the cooling performance of the waste quenching liquid, and are green, environment-friendly and efficient.
While the present invention has been described in detail with reference to the preferred embodiments thereof, it should be understood that the above description should not be taken as limiting the present invention. Numerous modifications and alterations to the present invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be limited only by the attached claims.
Claims (8)
1. A process equipment for regenerating and recycling quenching liquid is characterized by comprising the following steps: the device comprises a primary cavity for loading quenching liquid to be treated, an air floatation device arranged in the primary cavity, and an ultrasonic wave generating device for carrying out ultrasonic treatment on the quenching liquid loaded in the primary cavity.
2. The process equipment for regenerating and recycling the quenching liquid according to claim 1, wherein the air flotation device is a nano air flotation device.
3. The process equipment for regenerating and recycling the quenching liquid according to claim 1, wherein the air flotation device is an aerated ceramic.
4. The process equipment for recycling the quenching liquid according to claim 1, wherein the ultrasonic wave generating device comprises: the energy converter is arranged in the primary cavity, and the ultrasonic generator is arranged outside the primary cavity.
5. The process equipment for the regeneration and reuse of quenching liquid according to claim 1, wherein the equipment further comprises: and the oil scraping belt is arranged above the primary cavity.
6. The process equipment for the regeneration and reuse of quenching liquid according to claim 1, wherein the equipment further comprises: the sterilization device comprises a secondary cavity and a sterilization device arranged in the secondary cavity; a communicating pipeline is arranged between the first-stage cavity and the second-stage cavity, and the quenching liquid enters the second-stage cavity after the treatment in the first-stage cavity is finished.
7. The process equipment for the regeneration and reuse of quenching liquid according to claim 1, wherein the equipment further comprises: and the cooling device is a condensation pipe surrounding the inner wall of the primary cavity, and low-temperature liquid passes through the condensation pipe.
8. The process equipment for regenerating and recycling the quenching liquid according to claim 1, wherein the primary cavity is provided with a liquid inlet; the apparatus further comprises: and the filter is communicated with the liquid inlet.
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