CN111054135B - A solid-liquid-gas three-phase filter based on metal rubber and its working method - Google Patents

Abstract

The invention relates to a solid-liquid-gas three-phase filter based on metal rubber and a working method thereof, which comprises a frame, wherein a solid-liquid filter device for solid-liquid separation, a liquid-liquid filter device for oil-water separation and a gas-liquid filter device for gas-liquid separation are arranged on the frame, the solid-liquid filter device, the liquid-liquid filter device and the gas-liquid filter device are sequentially connected, two stages of metal rubber filter elements are arranged in the solid-liquid filter device and the liquid-liquid filter device, the gas-liquid filter device comprises a gas-liquid filter box, an oil groove and a water groove are arranged in the gas-liquid filter box, an exhaust grid is arranged on the upper side surface of the gas-liquid filter box, and an exhaust fan positioned on the lower side of the exhaust grid is arranged in the gas-liquid filter box. The solid-liquid-gas three-phase filter provided by the invention has the advantages that three substances of solid, liquid and gas are comprehensively filtered, solid-liquid separation, oil-water separation and gas-liquid separation can be simultaneously realized, the continuity is good, the efficiency is high, the service life is long, and the manufacturing and maintenance costs are low.

Description

A solid-liquid-gas three-phase filter based on metal rubber and its working method

technical field

The invention relates to a solid-liquid-gas three-phase filter based on metal rubber and a working method thereof, belonging to the technical field of filtration.

Background technique

With the progress of society, living standards and industrial technology levels have undergone tremendous development. In daily life and industry, the requirements for the purification of liquids are becoming more and more stringent. Impurities in liquids will not only affect the quality of liquids and life experience, but also affect the life of machines and even the quality of products. Therefore, filters are often equipped in daily life and industrial fields.

At present, the commonly used filters mainly include gravity filters, vacuum filters and pressure filters. The gravity filter has poor filtration accuracy and poor continuity. The material requirements of vacuum filters are strict and the cost is high. The pressurized filter has a complex structure and poor universality. At present, the filter still has the disadvantages of short service life, cumbersome replacement of filter material, and a single filter object; therefore, it is very necessary to find an alternative filter material and a corresponding filter structure.

Contents of the invention

In view of this, the purpose of the present invention is to provide a metal-rubber-based solid-liquid-gas three-phase filter and its working method with long service life and low manufacturing and maintenance costs, which can simultaneously realize solid-liquid separation, oil-water separation and gas-liquid separation , good continuity and high efficiency.

The present invention adopts the following schemes to realize: a solid-liquid-gas three-phase filter based on metal rubber, including a frame, on which a solid-liquid filter device for solid-liquid separation and a liquid-liquid filter device for oil-water separation are installed. The device and the gas-liquid filter device for gas-liquid separation, the solid-liquid filter device, the liquid-liquid filter device and the gas-liquid filter device are connected in sequence, and the solid-liquid filter device and the liquid-liquid filter device are equipped with two stages Metal rubber filter element, the gas-liquid filter device includes a gas-liquid filter box, the gas-liquid filter box is provided with an oil tank and a water tank, the gas-liquid filter box is provided with an exhaust grille on the upper side, and the gas-liquid filter box is installed with a Exhaust fan on the underside of the exhaust grille.

Further, the solid-liquid filtering device includes a solid-liquid filtering cartridge, the middle part of which is hinged on the frame, and the upper end of the solid-liquid filtering cartridge is equipped with a trumpet-shaped cover with the lower part larger than the upper part, and the upper end of the cover is A liquid inlet is provided; a flow plate is installed in the upper part of the solid-liquid filter cartridge, and a two-layer metal rubber filter element is installed under the flow plate, and a liquid outlet is arranged at the lower end of the solid-liquid filter cartridge.

Further, the inside of the solid-liquid filter cartridge is provided with an upper mounting frame and a lower mounting frame that can rotate relative to the solid-liquid filter cartridge and are connected together. The upper metal rubber filter element is installed between the upper and lower mounting frames, and the lower metal rubber filter The element is installed at the lower end of the lower mounting frame, and the flow plate includes a fixed plate fixed on the inner wall of the solid-liquid filter cartridge and located above the upper metal rubber filter element, and a movable plate attached to the lower side of the fixed plate and mounted on the upper mounting frame.

Further, the upper end of the solid-liquid filter cartridge is equipped with a movable sleeve that can rotate relative to it, and the side wall of the upper end of the solid-liquid filter cartridge is provided with a horizontal long hole. The adjusting rod on the upper end of the upper mounting frame can drive the upper and lower mounting frames to rotate through the swinging adjusting rod.

Further, a waste liquid tank is provided below the liquid outlet of the solid-liquid filter cartridge, a T-shaped tube is installed at the liquid outlet of the solid-liquid filter cartridge, and a waste liquid cover is threadedly connected to the lower end of the T-shaped tube. The side port is connected with a hose leading to the liquid filter unit.

Further, the liquid-liquid filter device includes a liquid-liquid filter box, the middle part of the liquid-liquid filter box is provided with a partition that divides the interior into left and right two filter chambers, and a partition connecting the two filter chambers is provided on the partition. Oil hole, the left filter chamber is equipped with a first-level mounting seat that can float up and down through the upper liquid pressure to control the opening and closing of the oil hole. The first-level mounting seat is equipped with a first-level metal rubber filter element with oil-water separation function , the side wall of the right filter chamber is provided with an oil outlet whose height is lower than that of the oil hole, and the right filter chamber is provided with a secondary installation seat that can realize the up and down fluctuation of the upper liquid pressure to control the opening and closing of the oil outlet. A secondary metal rubber filter element with oil-water separation function is installed on the seat.

Further, the bottom of the liquid-liquid filter box is provided with a sump, the sump is provided with a water outlet, the first-level mounting seat is provided with a water outlet located on the lower side of the first-level metal rubber filter element, and the first-level mounting seat There is a first-stage spring at the bottom to push it upwards to reset, and the second-stage mounting base is also provided with a water outlet located on the lower side of the second-stage metal rubber filter element, and a secondary spring to push it upwards to reset is arranged under the second-stage mounting seat. .

Further, the oil tank and the water tank are of drawer type structure, the side wall of the gas-liquid filter box is provided with an oil inlet and a water inlet respectively above the oil tank and the water tank, and the side wall of the gas-liquid filter box is equipped with a barometer and a The motor that drives the exhaust fan.

Another technical solution of the present invention: a working method of the solid-liquid-gas three-phase filter based on metal rubber as described above, including the following steps: (1) before the entire filter starts to work, first start the gas-liquid filter device 5 The exhaust fan starts to work, and the solution enters the solid-liquid filter device to filter out solid impurities with large particle size; (2) The solution filtered out of solid impurities enters the liquid-liquid filter device for oil-water separation; (3) After oil-water separation The oil and water respectively enter the oil tank and the water tank in the gas-liquid filter box. Under the action of negative pressure, the gas dissolved in the oil and water is discharged through the exhaust grille to obtain pure water and oil.

Compared with the prior art, the present invention has the following beneficial effects:

1) Compared with traditional filters, metal rubber has good permeability, controllable pore size, large specific surface area, and fatigue resistance, which effectively increases the service life of the filter, improves the filtration efficiency and filtration accuracy;

2) Both the solid-liquid filter device and the liquid-liquid filter device are equipped with two-stage filter elements, which greatly guarantees the filtration accuracy. At the same time, the solid-liquid filter device can adjust the filtration flow rate to make the filtration rate controllable;

3) The use of springs in the liquid-liquid filtration device will form a stable filtration cycle inside the filter and improve the continuity of the filter work;

4) The solid-liquid filter device can be cleaned without dismantling, and can be reused, which greatly reduces the number of times to replace the filter material;

5) The filter uses the gravity of the liquid itself and the pressure difference as the driving force of the filter, which can ensure the thoroughness of the filter. The gas-liquid filter device is located at the end, which can eliminate the influence of the gas in the container during the filter process and ensure the accuracy of the filter.

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below through specific embodiments and related drawings.

Description of drawings

Fig. 1 is the front view of the structure of the embodiment of the present invention;

Fig. 2 is a schematic diagram of the internal structure of the solid-liquid filtering device in the embodiment of the present invention;

Fig. 3 is a schematic diagram of the internal structure of the liquid-liquid filter device in the embodiment of the present invention;

Fig. 4 is a schematic diagram of the internal structure of the gas-liquid filter device in the embodiment of the present invention;

Fig. 5 is an enlarged schematic diagram of place A in Fig. 2;

Fig. 6 is the enlarged schematic diagram of place B in Fig. 3;

Explanation of symbols in the figure: 1-frame, 2-solid-liquid filter device, 3-waste liquid tank, 4-liquid-liquid filter device, 5-gas-liquid filter device, 201-tube cover, 202-solid-liquid filter cartridge, 203 -Active sleeve body, 204-adjusting rod, 205-sealing rubber pad, 206-upper mounting frame, 207-limiting plate, 208-flow plate, 209-upper metal rubber filter element, 210-lower mounting frame, 211-lower layer Metal rubber filter element, 212-limit frame, 213-T-shaped tube, 214-waste liquid cover, 401-box cover, 402-liquid filter box, 403-partition plate, 404-first-level mounting seat, 405-one Grade metal rubber filter element, 406-first grade spring, 407-secondary mounting seat, 408-secondary metal rubber filter element, 409-secondary spring, 410-water collection tank, 501-pressure gauge, 502-oil tank, 503- Exhaust grille, 504-gas-liquid filter box, 505-valve, 506-exhaust fan, 507-water tank, 508-motor.

Implementation

As shown in Figures 1 to 6, a solid-liquid-gas three-phase filter based on metal rubber includes a frame 1 on which a solid-liquid filter device 2 for solid-liquid separation is installed for oil-water separation. The liquid-liquid filter device 4 and the gas-liquid filter device 5 for gas-liquid separation, the three of the solid-liquid filter device 2, the liquid-liquid filter device 4 and the gas-liquid filter device 5 are connected in sequence, the solid-liquid filter device 2, The installation heights of the liquid-liquid filter 4 and the gas-liquid filter 5 on the frame decrease successively. Two-stage metal rubber filter elements are all arranged in the solid-liquid filter 2 and the liquid-liquid filter 4, and the gas-liquid The filter device 5 includes a gas-liquid filter box 504, an oil tank 502 and a water tank 507 are arranged in the gas-liquid filter box 504, an exhaust grille 503 is arranged on the upper side of the gas-liquid filter box 504, and a gas-liquid filter box 504 is installed with a The exhaust fan 506 on the lower side of the air grille, when the exhaust fan discharges the gas in the gas-liquid filter box 504, can make the inside of the gas-liquid filter box 504 generate negative pressure. Since the three filter devices are installed sequentially from high to bottom, Liquid gravity and air pressure difference are the main driving forces for liquid flow during filtration; the solid-liquid-gas three-phase filter takes into account the comprehensive filtration of solid-liquid-gas three substances, with good continuity, high efficiency and long service life, which can greatly reduce maintenance costs .

In this embodiment, the solid-liquid filter device 2 includes a solid-liquid filter cartridge 202, the middle part of which is hinged on the frame, and the solid-liquid filter cartridge 202 is hinged to the frame by a pair of bolts on both sides. Above, a pair of bolt holes located on both sides of the solid-liquid filter cartridge 202 are opened on the frame, and the bolts pass through the bolt holes, and the two sides of the middle part of the solid-liquid filter cartridge 202 are provided with threaded holes connected with the bolts. The solid-liquid filter cartridge 202 can be fixed by tightening the bolt, and the solid-liquid filter cartridge 202 can be pushed to rotate around the bolt by loosening the bolt, so that the inside of the solid-liquid filter cartridge 202 can be cleaned without disassembly.

In this embodiment, the upper end of the solid-liquid filter cartridge 202 is equipped with a trumpet-shaped cap 201 with a large bottom and a small top. The upper end of the cap 201 is provided with a liquid inlet. The trumpet-shaped cap is convenient for drainage and saves water distributors. The inner side of the lower end of the cylinder cover 201 is provided with an internal thread, which is convenient for installation and is conducive to sealing. The outer side of the upper end of the solid-liquid filter cartridge 202 is provided with an external thread, and the cylinder cover 201 is threadedly connected to the upper end of the solid-liquid filter cartridge 202; the solid-liquid filter A flow plate 208 is installed on the upper part of the cylinder, and a two-layer metal rubber filter element (209, 211) is installed under the flow plate 208. The lower end of the solid-liquid filter cylinder is provided with a liquid outlet, and the upper layer of the metal rubber filter element is The pore size is larger, and the pore size of the metal rubber filter element in the lower layer is smaller.

In this embodiment, the solid-liquid filter cartridge 202 is provided with an upper mounting frame 206 and a lower mounting frame 210 that can rotate relative to the solid-liquid filter cartridge and are connected together. The upper metal rubber filter element 209 is installed on the upper and lower mounting frames. Between, the lower metal rubber filter element 211 is installed on the lower end of the lower mounting frame 210, the lower end of the lower mounting frame is installed on the limit frame 212 supporting the lower metal rubber filter element 211, the lower end of the upper mounting frame, the upper and lower ends of the lower mounting frame Both ends and the limit frame are hollowed out, which is conducive to the passage of liquid; the flow plate 208 includes a fixed plate fixed on the inner wall of the solid-liquid filter cartridge and located above the upper metal rubber filter element and attached to the lower side of the fixed plate and installed The movable plate on the upper mounting frame.

In this embodiment, the upper end of the solid-liquid filter cartridge 202 is equipped with a movable sleeve 203 that can rotate relative thereto. The inner wall of the cylinder 202 is free to rotate, and the side wall of the upper end of the solid-liquid filter cylinder 202 is provided with a horizontal long hole, and the horizontal long hole is provided with an adjustment rod 204 that passes through the movable sleeve and is connected to the upper end of the upper mounting frame so that the adjustment rod 204 can pass through the swing adjustment rod. Drive the upper and lower mounting brackets to rotate, and the joint between the movable sleeve body 203 and the adjusting rod 204 is sealed by a sealing rubber pad 205 to prevent liquid leakage when adjusting the flow rate. In the threaded hole of the rack, the upper and lower mounting racks are driven to rotate through the swing adjustment rod, and then the movable plate is driven to rotate relative to the fixed plate, so as to realize the adjustment of the opening of the through hole on the fixed plate, and then realize the adjustment of the flow of the liquid.

In this embodiment, a waste liquid tank 3 is provided below the liquid outlet of the solid-liquid filter cartridge 202, a T-shaped tube 213 is installed at the liquid outlet of the solid-liquid filter cartridge 202, and the lower end of the T-shaped tube 213 is threadedly connected There is a waste liquid cover 214, and the side port of the T-shaped pipe 213 is connected with a flexible pipe leading to the liquid-liquid filtering device.

At the beginning of filtration, the filtered solution flows into the solid-liquid filter cartridge 202 evenly from the liquid inlet of the solid-liquid filter device cartridge cover 201 along the inner wall of the cartridge cover, passes through the flow plate 208, and flows to the upper metal rubber filter element 209, and the solid impurities with larger particle size It will stay in the upper metal rubber filter element 209, and the remaining solution will continue to flow to the lower metal rubber filter element 211. Since the lower metal rubber filter element 211 has a smaller pore size, the remaining solid impurities with smaller particle sizes will all stay in the lower metal rubber filter element. In the element 211 , the waste liquid cover 214 is always kept closed during the filtering process, and the filtered solution flows into the liquid-liquid filtering device 4 through the side interface of the T-shaped tube 213 .

When cleaning the solid-liquid filter device, unscrew the bolts on both sides of the solid-liquid filter cartridge 202. At this time, the solid-liquid filter cartridge 202 can be rotated arbitrarily, rotated 180° to place it horizontally, and then tighten the bolts again, and the solid-liquid filter cartridge 202 is fixed again. When cleaning, the cleaning liquid flows in from the side port of the T-shaped pipe 213 and flows out from the liquid inlet of the cylinder cover 201. The solid particle impurities remaining in the metal rubber filter element flow to the waste water with the cleaning liquid. In tank 3.

In this embodiment, the liquid-liquid filter device 4 includes a liquid-liquid filter box 402, and a rib structure is provided on the outside of the liquid-liquid filter box 402 for mounting it on the frame 1. The upper end of the liquid-liquid filter box 402 has Case cover 401, case cover 401 is connected with liquid-liquid filter box 402 by plugging, and the middle part of liquid-liquid filter box 402 is provided with a partition 403 that divides the interior into left and right two filter chambers, and the partition 403 is provided with The oil hole connecting the two filter chambers, the tank cover 401 is provided with a liquid inlet above the left filter chamber; the left filter chamber is equipped with a first-level device that can control the opening and closing of the oil hole by floating up and down according to the pressure of the upper liquid Seat 404, the first-level mounting seat 404 is equipped with a first-level metal rubber filter element 405 with oil-water separation function, the side wall of the right filter chamber is provided with an oil outlet with a height lower than the oil hole, and the right filter chamber is provided with a through-hole The pressure of the upper liquid realizes up and down floating to control the secondary installation seat 407 of the opening and closing of the oil outlet. The secondary installation seat is equipped with a secondary metal rubber filter element 408 with oil-water separation function.

Among them, the metal rubber filter element with oil-water separation function is to make the metal rubber filter element have the oil-water separation function after surface treatment. This surface treatment method is called alkali etching method. Metal rubber is prepared by alkali etching method to obtain super Hydrophilic and underwater super-oleophobic metal rubber can efficiently and quickly separate oil-water mixtures, mainly by soaking the metal rubber in sodium hydroxide and ammonium persulfate solution for a predetermined time; this treatment method belongs to the prior art, here The principle and process are not described in detail.

In this embodiment, the bottom of the liquid-liquid filter box 402 is provided with a water collection tank 410, and the lower end of the liquid-liquid filter box 402 is plugged and connected with the water collection tank 410. The water collection tank is provided with a water outlet and an oil outlet. There is a hose connected to the water outlet leading to the hose of the gas-liquid filter device; the first-level installation base 404 is provided with a water outlet located on the lower side of the first-level metal rubber filter element, and a device is provided under the first-level installation base to push it upwards to reset The first-level spring 406, the second-level mounting seat is also provided with a water outlet located on the lower side of the second-level metal rubber filter element, and the second-level spring 409 is arranged below the second-level mounting base to push it back upwards. The first-level spring 406 stiffness is greater than the stiffness of the secondary spring 409, the left filter chamber and the right filter chamber sidewalls are respectively provided with annular brackets for supporting the primary spring 406 and secondary spring 409; the primary mounting seat 404 and the secondary mounting Seats 407 are respectively provided with sinkers for inserting the primary metal rubber filter element 405 and the secondary metal rubber filter element 408. The water outlet is located at the bottom of the sinker, and the bottom surface of the sinker is an inclined plane with a low center and a high side. , in order to facilitate drainage.

When the solution enters the left filter chamber of the liquid-liquid filter device 4, it first passes through the primary metal rubber filter element 405. Since the primary metal rubber filter element 405 has the oil-water separation function, the oil will stay on the upper side of the primary metal rubber filter element 405. , and the water will pass through the primary metal rubber filter element 405 and fall into the sump 410. As the amount of liquid above the primary metal rubber filter element 405 increases, the primary spring 406 located below is continuously compressed, resulting in a primary The height of the mounting seat 404 is continuously reduced. When it is lowered to a certain distance, the oil hole blocked by the primary mounting seat 404 will be exposed at first, and the oil on the upper side of the primary metal rubber filter element 405 will flow to the right filter chamber through the oil hole. , the secondary metal rubber filter element 408 will filter out the water remaining in the oil. The filtering principle of the secondary metal rubber filter element 408 is the same as that of the primary metal rubber filter element 405. As the amount of liquid increases, the secondary spring 409 located below is continuously compressed, which in turn causes the height of the secondary mounting seat 407 to continuously decrease. When it is lowered to a certain distance, the oil outlet is initially blocked by the secondary mounting seat 407 and the oil outlet is exposed, and the right filter The liquid on the upper side of the indoor secondary metal rubber filter element 408 will flow out from the oil outlet; when the liquid outflow in the left filter chamber is greater than the inflow, the primary mounting seat 404 will rise as a whole due to the reduction of the upper liquid, making the over The opening of the oil hole decreases, and the solution flowing to the right filter chamber decreases. Since the inflow of the solution in the left filter chamber remains unchanged, the inflow of solution in the left filter chamber will be greater than the outflow again, and at this time, the primary mounting seat 404 will drop again. . This cycle goes back and forth to form a cycle, so that the rate of filtration tends to be stable, while ensuring the accuracy and continuity of filtration.

In this embodiment, the exhaust grill 503 of the gas-liquid filter device is installed on the gas-liquid filter box 504 by screws, the oil tank 502 and the water tank 507 are drawer-type structures for easy access, and the gas-liquid filter The side wall of the tank is provided with an oil inlet and a water inlet respectively located above the oil tank and the water tank, which are respectively connected with the hoses of the oil outlet and the water outlet in the liquid-liquid filter device 4, and valves 505 are installed on the oil inlet and the water inlet. , to control the on-off of the liquid inlet, the side wall of the gas-liquid filter box is equipped with a barometer 501 and a motor 508 for driving the exhaust fan 506, and the barometer 501 is used to monitor the internal pressure of the gas-liquid filter box 504, And the transmission mechanism between the motor 508 and the exhaust fan 506 can adopt belt transmission.

Before the entire filter starts to work, first start the motor 508 in the gas-liquid filter device 5, drive the exhaust fan to start working, and keep the valves 505 on the oil inlet and water inlet open, and a negative pressure will be formed in the entire filter device , can speed up the filtering speed and ensure the thoroughness of filtering. The oil and water separated by the liquid-liquid filter box 402 flow into the water inlet and the oil inlet on the gas-liquid filter box 504 respectively. When all the liquid enters the gas-liquid filter box 504, close the water inlet and oil inlet. The valve 505 ensures that other gases will not enter the gas-liquid filter box 504. Under the action of negative pressure, the gas dissolved in oil and water is discharged through the exhaust grille 503. According to the indication of the barometer 501, the end time of the filter is judged. Finally, extract the oil tank 502 and the water tank 507 to obtain pure water and oil.

The metal rubber-based solid-liquid-gas three-phase filter of the present invention uses new material metal rubber to replace traditional filter cotton, activated carbon, porous stainless steel and other filter materials, taking into account the comprehensive filtration of solid-liquid-gas three substances and double filtration of solid-liquid mixed liquid and oil-water The mixed liquid is suitable for the filtration of drinking water, the filtration of industrial circulating water, the pretreatment of hydraulic oil and lubricating oil in metal processing, and solves the problems of short service life, frequent replacement and poor filtration accuracy of filter materials in traditional filters; It has the following advantages:

1) Compared with traditional filters, metal rubber has good permeability, controllable pore size, large specific surface area, and fatigue resistance, which effectively increases the service life of the filter, reduces maintenance costs, and improves filtration efficiency and filtration accuracy;

2) Both the solid-liquid filter device 2 and the liquid-liquid filter device 4 are equipped with two-stage filter elements, which greatly guarantees the filtration accuracy. At the same time, the solid-liquid filter device can adjust the filtration flow rate to make the filtration rate controllable;

3) The use of the spring in the liquid-liquid filter device 4 will form a stable filter cycle inside the filter and improve the continuity of the filter work;

4) The solid-liquid filter device can be cleaned without dismantling, and can be reused, which greatly reduces the number of times to replace the filter material;

5) The filter uses the gravity of the liquid itself and the pressure difference as the driving force of the filter, which can ensure the thoroughness of the filter. The gas-liquid filter device is located at the end, which can eliminate the influence of the gas in the container during the filter process and ensure the accuracy of the filter.

A working method of a solid-liquid-gas three-phase filter based on metal rubber as described above, comprising the following steps: (1) before the entire filter starts to work, start the exhaust fan in the gas-liquid filter device 5 to start working, The valve 505 on the oil inlet and water inlet remains open; the solution enters the solid-liquid filter device to filter out solid impurities with large particle size; In the liquid filter cartridge 202, through the flow plate 208, it flows to the upper metal rubber filter element 209, the solid impurities with larger particle size will stay in the upper metal rubber filter element 209, and the remaining solution continues to flow to the lower metal rubber filter element 211, because The lower metal rubber filter element 211 has a smaller pore size, and the remaining solid impurities with smaller particle sizes will all stay in the lower metal rubber filter element 211. The waste liquid cover 214 is always kept closed during the filtration process, and the filtered solution passes through the T-type filter element. The side interface of the pipe 213 flows into the liquid-liquid filter device 4;

(2) The solution filtered out of solid impurities enters the liquid-liquid filter device for oil-water separation treatment; when the solution enters the left filter chamber of the liquid-liquid filter device 4, it first passes through the primary metal rubber filter element 405, because the primary metal rubber filter element 405 has the function of oil-water separation, the oil will stay on the upper side of the first-stage metal rubber filter element 405, and the water will pass through the first-stage metal rubber filter element 405 and fall into the sump 410. As the amount of liquid increases, the primary spring 406 located below is continuously compressed, which in turn causes the height of the primary mounting seat 404 to continuously decrease. When it is lowered to a certain distance, the oil hole is initially blocked by the primary mounting seat 404 and exposed. The oil on the upper side of the metal rubber filter element 405 will flow to the right filter chamber through the oil hole, and the secondary metal rubber filter element 408 will filter out the water remaining in the oil liquid. The filtering principle of the secondary metal rubber filter element 408 is the same as The first-stage metal rubber filter element 405 is the same, as the liquid volume on the upper side of the second-stage metal rubber filter element 408 increases, the second-stage spring 409 located below is continuously compressed, thereby causing the height of the second-stage mounting seat 407 to continuously decrease. At a certain distance, the oil outlet is blocked by the secondary mount 407 at first, and the liquid on the upper side of the secondary metal rubber filter element 408 in the right filter chamber will flow out from the oil outlet; when the liquid outflow in the left filter chamber is greater than the inflow At this time, the primary installation seat 404 will rise as a whole due to the decrease of the upper liquid, so that the opening of the oil hole decreases, and the solution flowing to the right filter chamber decreases. Since the inflow of the solution in the left filter chamber remains unchanged, the left filter The inflow of indoor solution will be greater than the outflow again, and at this time, the first-level mounting seat 404 will drop again, thus forming a cycle, so that the filtration rate tends to be stable, while ensuring the accuracy and continuity of filtration; (3) The oil and water after the oil-water separation enter the oil tank and the water tank in the gas-liquid filter box respectively. When all the liquid enters the gas-liquid filter box 504, close the valve 505 located on the water inlet and the oil inlet to ensure that the gas-liquid filter box No other gas will enter the 504. Under the action of negative pressure, the gas dissolved in the oil and water is discharged through the exhaust grille, and finally the oil tank 502 and the water tank 507 are extracted to obtain pure water and oil.

Unless otherwise stated in any technical solution disclosed in the present invention, if it discloses a numerical range, then the disclosed numerical range is a preferred numerical range, and any person skilled in the art should understand that: the preferred numerical range is only Among the many practicable numerical values, the technical effect is relatively obvious or representative. Since there are too many numerical values to list exhaustively, the present invention only discloses some numerical values to illustrate the technical solution of the present invention, and the numerical values listed above should not constitute limitations on the protection scope of the present invention.

If the present invention discloses or relates to parts or structural parts that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, using bolts or screws), or it can also be understood as: Non-detachable fixed connection (such as riveting, welding), of course, the mutual fixed connection can also be replaced by an integrated structure (such as manufactured by integral forming by casting process) (except that the integral forming process cannot be used obviously).

In addition, unless otherwise stated, the terms used in any of the technical solutions disclosed in the present invention to indicate positional relationships or shapes include states or shapes that are similar, similar or close to them.

Any component provided by the present invention can be assembled from multiple individual components, or can be a single component manufactured by integral forming process.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: the present invention can still be Modifications to the specific implementation of the invention or equivalent replacement of some technical features; without departing from the spirit of the technical solution of the present invention, should be included in the scope of the technical solution claimed in the present invention.

Claims (2)

1. A solid-liquid-gas three-phase filter based on metal rubber, characterized in that: it comprises a frame on which a solid-liquid filter for solid-liquid separation and a liquid-liquid filter for oil-water separation are installed on the frame and the gas-liquid filter device for gas-liquid separation, the solid-liquid filter device, the liquid-liquid filter device and the gas-liquid filter device are connected in sequence, and the solid-liquid filter device and the liquid-liquid filter device are all provided with two-stage metal filters. Rubber filter element, the gas-liquid filter device includes a gas-liquid filter box, an oil tank and a water tank are arranged in the gas-liquid filter box, an exhaust grille is arranged on the upper side of the gas-liquid filter box, and a gas-liquid filter box is installed with a Exhaust fan on the lower side of the air grille; the solid-liquid filter device includes a solid-liquid filter cartridge, the middle part of which is hinged on the frame, and the upper end of the solid-liquid filter cartridge is equipped with a loudspeaker with a large bottom and a small top Shaped cylinder cover, the upper end of the cylinder cover is provided with a liquid inlet; the upper part of the solid-liquid filter cylinder is equipped with a flow plate, and a two-layer metal rubber filter element is installed under the flow plate, and the lower end of the solid-liquid filter cylinder is provided with a Liquid outlet; the inside of the solid-liquid filter cartridge is provided with an upper mounting frame and a lower mounting frame that can rotate relative to the solid-liquid filter cartridge and connect together. The upper metal rubber filter element is installed between the upper and lower mounting frames, and the lower metal rubber The filter element is installed at the lower end of the lower mounting frame. The flow plate includes a fixed plate fixed on the inner wall of the solid-liquid filter cartridge and located above the upper metal rubber filter element, and a movable plate attached to the lower side of the fixed plate and installed on the upper mounting frame. The upper end of the solid-liquid filter cartridge is equipped with a movable sleeve that can rotate relative to it, and the side wall of the upper end of the solid-liquid filter cartridge is provided with a horizontal long hole, and the horizontal long hole is provided with a movable sleeve that passes through the movable sleeve and is connected to the upper The adjusting rod at the upper end of the mounting frame can drive the upper and lower mounting frames to rotate through the swinging adjusting rod; a waste liquid tank is arranged below the liquid outlet of the solid-liquid filter cartridge, and a T-shaped filter is installed at the liquid outlet of the solid-liquid filter cartridge. The lower end interface of the T-shaped tube is threadedly connected with a waste liquid cover, and the side interface of the T-shaped tube is connected with a hose leading to the liquid-liquid filter device; the liquid-liquid filter device includes a liquid-liquid filter box, and the middle part of the liquid-liquid filter box is set There is a partition that separates the interior into two filter chambers, left and right. The partition is provided with an oil hole connecting the two filter chambers. The left filter chamber is equipped with a filter that can float up and down according to the pressure of the liquid above to control the oil passage. The first-level mounting seat for the opening and closing of the hole. The first-level metal rubber filter element with oil-water separation function is installed on the first-level mounting base. The side wall of the right filter chamber is provided with an oil outlet that is lower than the oil hole. In the room, there is a secondary installation seat that can control the opening and closing of the oil outlet through the upper and lower liquid pressure. The secondary installation seat is equipped with a secondary metal rubber filter element with oil-water separation function; the liquid-liquid filter There is a water collection tank at the bottom of the box, and a water outlet is provided on the water collection tank. A water outlet located on the lower side of the first-level metal rubber filter element is provided on the first-level mounting base. The first-level spring, the second-level mounting base is also provided with a water outlet located on the lower side of the second-level metal rubber filter element, and a second-level spring is provided under the second-level mounting base to push it upwards to reset; the oil tank and water tank are drawers The side wall of the gas-liquid filter box is provided with an oil inlet and a water inlet respectively located above the oil tank and the water tank, and the side wall of the gas-liquid filter box is equipped with a barometer and a motor for driving the exhaust fan. 2. A working method for a solid-liquid-gas three-phase filter based on metal rubber as claimed in claim 1, characterized in that it comprises the following steps: (1) before the entire filter starts to work, first start the gas-liquid filter device The exhaust fan in the middle starts to work, and the solution enters the solid-liquid filter device to filter out solid impurities with large particle size; (2) The solution filtered out of solid impurities enters the liquid-liquid filter device for oil-water separation; (3) After oil-water separation The oil and water enter the oil tank and water tank in the gas-liquid filter box respectively. Under the action of negative pressure, the gas dissolved in the oil and water is discharged through the exhaust grille to obtain pure water and oil.