Release agent purification treatment system

Abstract

The utility model discloses a release agent purification treatment system, and belongs to the field of release agent purification treatment based on deep wax removal. The utility model relates to a release agent purification treatment system, which comprises: a raw water collection pool for storing a release agent waste liquid discharged by a machine tool; the treatment tank is connected with the raw water collection tank; the treatment tank is connected with the hydrodynamic cavitation system; the medium filter is connected with the treatment pond, and the medium filter comprises a filtering tank and a medium filler arranged in the filtering tank; the liquid supply tank is connected with the medium filter; and a liquid inlet pump and a paper tape filter are sequentially connected between the treatment tank and the raw water collection tank. According to the device, oil and waste wax in waste liquid are broken out and removed through hydrodynamic cavitation, and residual waste wax in treatment liquid is further removed through medium filtration, so that the cleanliness of release agent recycling liquid is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of release agent purification treatment recycling, especially to the field of release agent purification treatment based on deep wax removal. BACKGROUND

[0002] The existing release agent recycling treatment process is complex, and oil, wax and solid particles are separated respectively. The separated liquid needs to be concentrated and matched before being supplied to the machine tool. Because oil and wax sometimes exist in an emulsified state, it is difficult to remove them completely at one time. Precision filtration is often used for filtration. Precision filtration uses filter cores for filtration. The filter cores have a certain service life and pollution capacity, and often need to be replaced frequently, resulting in high maintenance cost. At the same time, the existing release agent waste liquid purification recycling system generally treats the waste liquid in a treatment tank, and then supplies the treated liquid to a matching tank for matching. An additional matching tank and related matching equipment increase the overall equipment cost.

[0003] After the existing treatment equipment is used to recycle and treat the release agent, part of the emulsified wax in the release agent will be destroyed due to the high temperature of the release process and the cavitation of the recycling equipment, and part of the emulsified wax will precipitate as solid wax particles. These solid waxes will adhere to the inner wall of the pipeline and equipment to form a wax layer, causing pipeline blockage and reducing treatment effect and product quality. In order to solve the problem of solid wax accumulation, through research, the development of cavitation-air flotation-wax scraper treatment technology is carried out, and the preliminary application process of on-site wax removal is obtained. However, this process can only remove large particles of waste wax floating to the surface, and small particles of waste wax will still cause pipeline blockage if not removed.

[0004] In order to further reduce the investment in wax removal equipment, reduce the maintenance cost of the equipment, and improve the wax removal efficiency, it is necessary to continue to develop a low-cost and simple-to-operate filtration process to treat the release agent after treatment, so that the concentration of solid wax is kept low, and the accumulation of wax is prevented to maintain the quality of recycling. The medium filtration method has good efficiency in removing small particles, petroleum and wax-containing sludge in water, but it is difficult to regenerate once the medium adsorbs a lot of dirt, and the filter medium needs to be removed for cleaning. This also limits the application of medium filtration method in release agent. SUMMARY

[0005] In order to solve the problem of residual wax in the existing release agent purification recycling treatment system, the utility model provides a release agent purification treatment method and system based on deep wax removal. Through hydraulic cavitation, the oil and waste wax in the waste liquid are broken out and removed. Through medium filtration, the residual waste wax in the treated liquid is further removed to ensure the cleanliness of the release agent recycling liquid.

[0006] The utility model discloses technical schemes as follows based on the above technical problems:

[0007] A demoulding agent purification treatment system, the treatment system comprises:

[0008] A raw water collecting pool for storing demoulding agent waste liquid discharged by a machine tool;

[0009] A treatment pool connected with the raw water collecting pool; the treatment pool is connected with a hydrodynamic cavitation system;

[0010] A medium filter connected with the treatment pool, the medium filter comprises a filter tank and a medium filler arranged in the filter tank;

[0011] A liquid supply groove connected with the medium filter;

[0012] A liquid inlet pump and a paper belt filter are sequentially connected between the treatment pool and the raw water collecting pool.

[0013] As a preferred, the treatment pool is provided with an overflow plate, the overflow plate separates the treatment pool into a dross groove; a first loop is arranged between the dross groove and the liquid inlet pump.

[0014] As a preferred, the medium filter comprises:

[0015] A medium net for intercepting the medium filler;

[0016] A cyclone arranged below the medium net;

[0017] A liquid inlet port tangentially introduced into the cyclone;

[0018] A clean liquid outlet port arranged above the medium filler;

[0019] A discharge port arranged below the cyclone.

[0020] As a preferred, the treatment system comprises a circulating water tank for backwashing the medium filler, the circulating water tank is connected with the clean liquid outlet port, and the discharge port is connected with the circulating water tank; the discharge port is also connected with the paper belt filter.

[0021] As a preferred, the filter tanks are arranged in series; a liquid outlet pump and a valve are arranged between a primary filter tank and the treatment pool; and an outlet of a final filter tank is connected with the liquid supply groove.

[0022] As a preferred, the treatment system comprises a circulating water tank for backwashing the medium filler, the filter tanks are arranged in parallel, and each filter tank is connected with the circulating water tank.

[0023] As a preferred, a jet device is arranged between the circulating water tank and the filter tank; and the jet device is provided with an air inlet port.

[0024] As preferred, the circulating water tank is connected with a heater or a heat exchanger; a low-temperature steel roller is arranged above the circulating water tank and is slidably arranged in the circulating water tank and is separated from the liquid surface when rising; and rotates at low speed when descending to the liquid surface.

[0025] As preferred, a second loop is arranged between the treatment tank and the liquid inlet pump; and a proportioning pump for concentration proportioning is further connected between the liquid inlet pump and the treatment tank.

[0026] Compared with the prior art, the application has the beneficial technical effects that:

[0027] 1. The oil in the oil-in-water state and the solid wax in the waste water are broken by the hydraulic cavitation in the treatment tank, the waste oil and the solid wax float to the liquid surface and overflow to the dregs tank. The dregs with part of the liquid in the dregs tank are further pumped to the paper belt filter for further filtration, so that the surface waste wax and waste oil are continuously removed, the liquid reuse rate is high, the oil and part of the solid wax in the waste water are removed in the treatment tank, and then the remaining part of the wax is separated by the medium filter, so that the liquid in the liquid supply tank is cleaner.

[0028] 2. The treated release agent treatment liquid is proportioned in the treatment tank and directly supplied to the on-site proportioning machine for use, so that the operation steps of subsequent proportioning are reduced and the equipment cost is reduced.

[0029] 3. The release agent treatment liquid is introduced into the medium filter, the medium filler is ceramic particles, the ceramic particles are filtered, the ceramic particles have strong adsorption capacity for the wax due to the porous material property, the limit adsorption capacity of each g of the ceramic particles can reach 0.24 g of the wax, and the adsorption capacity of each g of the ceramic particles for the wax is generally 0.06-0.12 g. The water is discharged from the upper part, the wax and the oil remaining in the treatment liquid are well intercepted, the ceramic particles are scattered when backwashing, and the ceramic particles are cleaned.

[0030] 4. The ceramic particles can be regenerated and reused by hot water cleaning; in the circulating water tank, the wax is further recovered by inserting the low-temperature steel roller, the circulating water is purified and recycled, water is saved, and the wax can be recovered; the medium filtration has no consumables and low use and maintenance cost compared with the precision filter. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a system flow chart of the release agent purification treatment system.

[0032] Figure 2 It is a structure flow chart of the hydraulic cavitation treatment part of the release agent purification treatment system.

[0033] Figure 3Structure flow chart of the medium filter part of the release agent purification treatment system of Example 1.

[0034] Figure 4 Structure flow chart of another embodiment of the medium filter part of the release agent purification treatment system of Example 1.

[0035] Figure 5 Structure flow chart of the medium filter part of the release agent purification treatment system of Example 2.

[0036] In the figure: release agent wastewater raw water pool 1, floating suction port 10, valve 11, pre-filter 12, liquid inlet pump 13, treatment pool 2, waste residue tank 20, valve 201, overflow plate 21, discharge pipe 22, valve 202, ozone generator 23, hydrodynamic cavitation generator 3, high-pressure pump 30, paper belt filter 4, medium filter 5, filter tank 51, medium filler 52, medium mesh 520, medium filter 6, cyclone 60, filter tank 61, medium filler 62, medium mesh 620, liquid inlet pipe 63, clean liquid outlet 64, emptying port 65, valve 650, valve 651, gas outlet 66, liquid supply tank 7, circulating water tank 8, second liquid inlet pump 80, jet device 81, heater 82, low-temperature steel roller 83, proportioning pump 9, valve 90. DETAILED DESCRIPTION

[0037] The utility model will be further described in connection with the drawings and specific embodiments:

[0038] Example 1:

[0039] As Figures 1-2 A release agent purification treatment system, comprising a release agent waste liquid raw water collection pool 1, a treatment pool 2, a paper belt filter 4 connected between the raw water collection pool 1 and the treatment pool 2, a valve 11, a pre-filter 12 and a liquid inlet pump 13 arranged in sequence between the raw water collection pool 1 and the paper belt filter 4. An overflow plate 21 is arranged in the treatment pool 2 to divide the treatment pool 2 into a floating residue tank 20, and the floating residue tank 20 is provided with a residue discharge port 22; a first loop is arranged between the floating residue tank 20 and the liquid inlet pump 13, and the first loop is provided with a valve 201. A hydrodynamic cavitation system is connected to the treatment pool 2, and the treatment pool 2 is provided with a liquid inlet end and a liquid outlet end of the hydrodynamic cavitation system, and the hydrodynamic cavitation system comprises a high-pressure pump 30 and a hydrodynamic cavitation generator 3 connected in sequence, the liquid inlet end is connected to the high-pressure pump 30, and the liquid outlet end is connected to the hydrodynamic cavitation generator; a second loop is further arranged between the liquid inlet end and the liquid inlet pump 13, and the second loop is provided with a valve 202; the treatment pool 2 is further connected to an ozone generator 23 to treat the treatment pool 2 with ozone. A proportioning pump 9 is further connected between the liquid inlet pump 13 and the treatment pool 2, and a valve 90 is arranged between the liquid inlet pump 13 and the proportioning pump 9.

[0040] As Figure 3, processing pool 2 is connected with medium filter 5, and a liquid outlet pump 21 and a valve are arranged between the processing pool 2 and the medium filter 5; the medium filter 5 comprises a filter tank 51 and a medium filler 52 arranged in the filter tank 51; the medium filler is ceramsite, a medium screen 520 for intercepting the ceramsite is arranged in the filter tank, the mesh aperture of the medium screen is slightly smaller than the particle size of the ceramsite, a flow meter is arranged at the outlet of the filter tank, a pressure gauge is arranged at the inlet, and the height of the filter material is not more than 75% of the height of the tank body.

[0041] A plurality of filter tanks are arranged in series, a first-stage filter tank is connected with the processing pool 2, and the outlet of a last-stage filter tank is connected with the liquid supply tank 7; from the first-stage filter tank to the last-stage filter tank, the filter tanks are sequentially and end-to-end connected in series, and a valve is arranged between each filter tank and each other filter tank. The system further comprises a circulating water tank 8 for backwashing the filler of the filter tank; in the backwashing mode, the filter tanks are arranged in parallel, the inlets and outlets of each filter tank are respectively connected with a main pipe connected with the circulating water tank 8, a second liquid inlet pump 80 is connected between the inlet of each filter tank and the circulating water tank 8, a valve is arranged between the circulating water tank 8 and the inlet of each filter tank, and a valve is arranged between the outlet of each filter tank and the circulating water tank 8.

[0042] During filtration, the valves for backwashing are all closed, and the treatment liquid drawn from the processing pool 2 can only pass through the filter tanks in series for filtration in sequence, and the clean liquid is discharged to the liquid supply tank 7; during backwashing, the valves of the filter tanks in series, the valve at the liquid outlet pump 21 and the valve connected with the liquid supply tank 7 are all closed, the valves for backwashing are opened, each filter tank is washed in the direction opposite to the filtration flow path, and the washing sewage enters the circulating water tank 8. The filter tanks are backwashed from bottom to top, the ceramsite can be dispersed, and the ceramsite can be cleaned more thoroughly.

[0043] As shown in Figure 4 , a jet device 81 is arranged between the circulating water tank 8 and each filter tank 51, and the jet device 81 is further provided with an air inlet; the gas-liquid mixed water generated by the jet device is used to spray and wash the ceramsite in the filter tank 51 from bottom to top, the impact force is larger, and the ceramsite can be dispersed and cleaned more thoroughly.

[0044] As shown in Figure 3 , the circulating water tank 8 is further connected with a heater 82 or a heat exchanger, and the heater 82 heats the circulating water tank 8; a low-temperature steel roller 83 is arranged above the circulating water tank, the low-temperature steel roller 83 penetrates the tank body of the circulating water tank, and the low-temperature steel roller 83 can slide a certain distance up and down; the low-temperature steel roller 83 is separated from the liquid surface when rising; and the low-temperature steel roller 83 rotates at a low speed when descending to the liquid surface.

[0045] The heating temperature is higher than the melting point of the wax (greater than 65°C), and the temperature is kept constant for the continuous flushing of the ceramsite. Because the water temperature is high, the wax layer adsorbed on the ceramsite can be melted, and the wax is taken out by the hot water and returned to the circulating water tank again. When the water temperature is increased from 20°C to 100°C, the surface tension is decreased from 72.75 to 58.6 mN / m. The lower surface tension of the hot water can be used to detach most of the wax adsorbed on the filter material into the water. The filter tank is flushed for several rounds to clean and regenerate the ceramsite. When the wax content in the circulating water tank reaches a threshold value, the low-temperature steel roller is lowered to the liquid surface to recover the melted wax in the water.

[0046] Example 2

[0047] As Figure 5 The difference between Example 1 and Example 2 is that the structure of the medium filter in Example 2 is different. The medium filter includes a filter tank 61, a medium filler 62 arranged in the filter tank 61, a cyclone 60 arranged at the lower part of the filter tank 61, an inlet 63 of the cyclone 60 arranged in a tangent direction, a clean liquid outlet 64 arranged above the medium filler 62, and a discharge port 65 arranged below the cyclone 60. The medium filler 62 is arranged below a medium screen 620 for intercepting the medium filler. The inlet 63 is arranged below the medium screen 620. The medium screen 620 is in a funnel shape with a downward protrusion in the middle. An exhaust port 66 is further arranged above the filter tank 61.

[0048] The inlet 63 is connected to the treatment tank 2, and a liquid outlet pump 21 and a valve are arranged between the inlet 63 and the treatment tank 2. The clean liquid outlet 64 is connected to the liquid supply tank 7, and the discharge port 65 is connected to the paper belt filter 4. A valve 650 is arranged between the discharge port 65 and the paper belt filter 4.

[0049] The medium filter is used for filtering, and the medium filler is ceramsite. Because the ceramsite is a porous material, it has a strong adsorption capacity for wax. The maximum adsorption capacity of each g of ceramsite can reach 0.24 g of wax. In general, the adsorption capacity of each g of ceramsite for wax is 0.06-0.12 g. The water is discharged from the upper part, and the filtration speed is generally 2-12 m / h. The medium filter has a trapping effect on the residual wax and waste oil in the treatment liquid.

[0050] The system further includes a circulating water tank 8 for backwashing the medium filler. The circulating water tank 8 is connected to the clean liquid outlet 64, and the discharge port 65 is connected to the circulating water tank 8. A second liquid inlet pump 80 and a valve are arranged between the circulating water tank 8 and the clean liquid outlet 64, and a valve 651 is arranged between the discharge port 65 and the circulating water tank 8. The flushing water flushes the medium filler from top to bottom.

[0051] Working mode of Example 2

[0052] The treated liquid of the treated pool 2 after cavitation treatment is introduced into the medium filter 6, the medium filler in the medium filter is ceramic, when passing through the medium filter, the valve 650 and the valve 651 can be closed, only the liquid is allowed to pass through the clean liquid port 64, so that the liquid is filtered to the maximum, and the clean liquid is introduced into the liquid supply tank 7. The valve 650 is opened in a timely manner, the concentrated liquid is discharged to the upper part of the paper belt filter, and the concentrated liquid is filtered again through the paper belt filter 4 and then introduced into the treated pool 2. When the ceramic in the filter tank 62 adsorbs a certain thickness of the wax layer, the flow rate of the clean liquid port is reduced, indicating that the ceramic filler is blocked. The liquid outlet pump 21 is closed, the valve 650 is opened to empty the filter tank, the valve 650 is closed, the valve 651 is opened, and the circulating water in the circulating water tank is introduced into the filter tank 61 by using the second liquid inlet pump 80, so that the ceramic is washed from top to bottom, and the sewage containing wax is returned to the circulating water tank. The filter tank can be repeatedly washed for several rounds.

[0053] The heater is arranged in the circulating water tank 8, the circulating water is heated, the heating temperature exceeds the melting point of the wax (greater than 65 DEG C), a certain temperature is maintained, and the ceramic is continuously washed. Because the water temperature is high, the wax layer adsorbed on the ceramic can be melted and taken out by hot water and returned to the circulating water tank again. The filter tank is circularly sprayed and washed for several rounds, so that the ceramic is cleaned and regenerated.

[0054] When the wax content in the circulating water tank reaches a threshold value, the low-temperature steel roller is lowered to the liquid level to recover the melted wax in the water. The low-temperature steel roller slowly rotates and fully contacts the circulating water containing wax, the solid wax in the water is adsorbed on the low-temperature steel roller and solidified by cooling, and then the low-temperature steel roller is raised to scrape off the solid wax.

[0055] The above is only a specific embodiment of the present application, but the technical features of the present application are not limited to this. Any simple change, equivalent replacement or modification made on the basis of the present application to solve the same technical problem and achieve the same technical effect is covered by the protection scope of the present application.

Claims

1. A parting agent purification system characterized by comprising: The processing system comprises: a raw water collecting pool for storing the stripper waste liquid discharged by the machine tool; a processing pool connected with the raw water collecting pool, wherein the processing pool is connected with a hydrodynamic cavitation system; a medium filter connected with the processing pool, wherein the medium filter comprises a filter tank and a medium filler arranged in the filter tank; a liquid supply tank connected with the medium filter; a liquid inlet pump, a paper belt filter and the processing pool are connected in sequence between the processing pool and the raw water collecting pool.

2. A parting agent purification system according to claim 1, wherein An overflow plate is arranged in the processing pool, wherein the overflow plate divides the processing pool into a dross tank, and a first loop is arranged between the dross tank and the liquid inlet pump.

3. A parting agent purification system according to claim 1, wherein The medium filter comprises: a medium net for intercepting the medium filler; a cyclone arranged below the medium net; a liquid inlet tangentially introduced into the cyclone; a clean liquid outlet arranged above the medium filler; a discharge port arranged below the cyclone.

4. A parting agent purification system according to claim 3, wherein The processing system comprises a circulating water tank for backwashing the medium filler, wherein the circulating water tank is connected with the clean liquid outlet, and the discharge port is connected with the circulating water tank; the discharge port is also connected with the paper belt filter.

5. A parting agent purification system according to claim 1, wherein The filter tanks are arranged in series; a liquid outlet pump and a valve are arranged between the first-stage filter tank and the processing pool; and the outlet of the last-stage filter tank is connected with the liquid supply tank.

6. A parting agent purification system according to claim 1, wherein The processing system comprises a circulating water tank for backwashing the medium filler, wherein the filter tanks are arranged in parallel, and each filter tank is connected with the circulating water tank.

7. A parting agent purification system according to claim 6, wherein A jet device is arranged between the circulating water tank and the filter tank; and the jet device is provided with an air inlet.

8. A parting agent purification system according to claim 4 or 6, wherein The circulating water tank is connected with a heater or a heat exchanger; a low-temperature steel roller is arranged above the circulating water tank, the low-temperature steel roller is slidably arranged in the circulating water tank, and the low-temperature steel roller is separated from the liquid surface when rising; and the low-temperature steel roller rotates at a low speed when descending to the liquid surface.

9. A parting agent purification system according to claim 1, wherein A second loop is arranged between the processing pool and the liquid inlet pump; and a proportional pump for concentration proportioning is further connected between the liquid inlet pump and the processing pool.

Images