CN118954842B

CN118954842B - Oil collecting and liquid supplying equipment

Info

Publication number: CN118954842B
Application number: CN202411217440.2A
Authority: CN
Inventors: 薛小涛; 王吉鹏; 张世华
Original assignee: Kunshan Longjingyuan Environmental Protection Equipment Technology Co ltd
Current assignee: Kunshan Longjingyuan Environmental Protection Equipment Technology Co ltd
Priority date: 2024-09-02
Filing date: 2024-09-02
Publication date: 2025-01-10
Anticipated expiration: 2044-09-02
Also published as: CN118954842A

Abstract

The invention discloses oil collecting and liquid supplying equipment, which comprises a paper bag filter for primary filtering, an aeration assembly, an oil slick collecting assembly, an oil-water separating assembly for separating oil collected by the oil slick collecting assembly, a multipurpose filtering assembly for secondary filtering and a purifying box, wherein a primary filtering tank and a secondary filtering tank are arranged in the purifying box, an overflow pipe is arranged in the primary filtering tank, an overflow outlet of the overflow pipe is communicated with the upper end of the secondary filtering tank, the other end of the overflow pipe is close to the inner bottom surface of the primary filtering tank, waste liquid in the collecting tank is conveyed to the paper bag filter by a pump body assembly, liquid filtered by the paper bag filter enters the primary filtering tank, then the aeration assembly performs aeration sterilization and purification, the oil slick foam in the primary filtering tank is collected by the oil slick collecting assembly, the oil slick collecting assembly and the oil-water separating assembly are matched with each other, and the skimming oil and water are separated again, and the cutting liquid is refined and filtered, and the quality of the cutting liquid is improved.

Description

Oil collecting and liquid supplying equipment

Technical Field

The invention relates to the technical field of waste liquid treatment, in particular to oil collecting and liquid supplying equipment.

Background

Cutting fluids are increasingly used in the machining industry, and their effect is not negligible. With the use of a large amount of cutting fluids, how to dispose of the waste cutting fluids is a problem to be solved. The waste cutting fluid contains metal particles, grease, mould and other harmful substances, and if the waste cutting fluid is discharged at will, serious pollution is caused to the environment. For this reason, those skilled in the relevant art have studied a cutting fluid purification and circulation system to solve the above problems.

The existing cutting fluid purifying and circulating system can realize purifying treatment without stopping machine operation, a collecting cavity is arranged in the middle of a separating tank, cutting fluid enters the separating tank, waste oil floats upwards, cutting fluid sinks to realize oil-liquid separation, waste oil floats to the upper side of the collecting cavity to collect and remove the waste oil, finally the waste oil is discharged through an oil discharge pipe, the sinking cutting fluid is subjected to sterilizing treatment procedures through an ultraviolet sterilizer to finish purifying, however, the cutting fluid also contains impurities such as oil sludge and pollutants, the purifying structures cannot carry out fine purifying on the impurities, and the waste oil skimmed for the first time also contains more cutting fluid, so that the purifying is not fine enough.

Disclosure of Invention

The invention solves the technical problems that the cutting fluid can not be finely purified, and impurities such as oil sludge, pollutants and the like are also contained in the cutting fluid, and the waste oil skimmed for the first time also contains more cutting fluid and is not finely purified.

In order to solve the technical problems, the technical scheme provided by the invention is that the oil collecting and liquid supplying equipment comprises a collecting tank for collecting workshop waste liquid, a pump body assembly, a water purifying module and a constant-pressure liquid supplying module;

The water purification module comprises a paper bag filter for primary filtration, an aeration assembly, a floating oil collecting assembly, an oil-water separating assembly for separating oil collected by the floating oil collecting assembly into oil and water, a multipurpose filtering assembly for secondary filtration and a purifying box, wherein the purifying box can also be a purifying tank and is positioned on the ground or underground;

a primary filter tank and a secondary filter tank are arranged in the purifying box, an overflow pipe is arranged in the primary filter tank, the overflow outlet of the overflow pipe is communicated with the upper end of the secondary filtering pond, the other end of the overflow pipe is close to the inner bottom surface of the primary filter tank;

The pump body component conveys the waste liquid in the collecting tank to the paper bag filter, the liquid filtered by the paper bag filter enters the first-stage filtering tank, then the aeration component is used for aeration to fully mix the floating oil, so that the water and oil separation is quickened, and the floating oil foam of the first-stage filtering tank is collected by the floating oil collecting component;

the multipurpose filtering component is used for filtering the liquid purified by the primary filtering tank for the second time and then conveying the liquid into the secondary filtering tank, so that the purity of the purified oil is ensured, the constant-pressure liquid supply module is used for supplying the liquid filtered by the secondary filtering tank at constant pressure, the water supply pressure is kept constant, and the balance between water supply and water use can be kept;

the oil-water separation assembly comprises a separation box with two filter cavities, an oil scraping machine, a buffer bent pipe, a small aeration assembly capable of adjusting the air outlet flow and improving the separation efficiency, and a filter screen plate;

A liquid separating port is formed between two filter cavities of the separation box, the liquid separating port is communicated with the two filter cavities, one end of a buffer bent pipe is arranged at the upper end of one filter cavity of the separation box, the other end of the buffer bent pipe is used for sucking the floating oil collected in the floating oil collecting assembly into the separation box through a connecting pipeline, a diaphragm pump and other structures to carry out oil-water separation treatment, a filter screen plate is arranged in the filter cavity provided with the buffer bent pipe and is lower than the liquid separating port and the buffer bent pipe, the liquid separating port and the buffer bent pipe are positioned at the same height, and the upper end of a small aeration assembly is arranged on the filter screen plate and is used for improving oil-liquid separation efficiency.

Further, the aeration assembly comprises an ozone inlet pipe and an aerator positioned in the purifying box, the ozone inlet pipe is used for conveying ozone for the aerator, the aerator is a disc type aerator, and the quantity of the aerators can be properly set according to the capacity of the purifying box.

Further, the floating oil collecting assembly comprises a mounting rod, a linear bearing, a floating ball connecting piece, a plurality of floating balls, a collecting barrel and a mounting bracket, the plurality of floating balls are mounted outside the collecting barrel, the collecting barrel is guaranteed to be located on an oil-water separation interface, the linear bearing is sleeved on the mounting rod, the mounting bracket is fixed outside the linear bearing, the length of the mounting bracket can be longer, the collecting barrel is located at a liquid center, the floating oil collecting assembly is mounted in a purifying box, the linear bearing can move linearly up and down, the floating balls are prevented from deviating at positions which are unfavorable for collecting the floating oil, the floating ball connecting piece is mounted above the opening of the collecting barrel through the spaced brackets, the mounting rod is fixed on the floating ball connecting piece, a liquid entering space is reserved between the floating ball connecting piece and the collecting barrel, and the floating oil enters the collecting barrel.

Further, the pump body assembly comprises at least two first submersible pumps, and the first submersible pumps are used for conveying liquid in the collecting tank into the input port of the paper bag filter.

Further, the multipurpose filter assembly comprises a plurality of bag filters connected in parallel through pipelines and a third submersible pump for conveying liquid to the bag filters, the third submersible pump is positioned in the primary filter tank, and water filtered by the bag filters is conveyed into the secondary filter tank through the pipelines.

Further, the small aeration assembly comprises an aeration pipe, the upper end of the aeration pipe extends out of the filter screen plate, the upper surface of the aeration pipe is flush, the front end and the rear end of the aeration pipe are provided with long-strip-shaped air outlets, an adjusting piston capable of moving up and down and sealing the aeration pipe is arranged in the aeration pipe, the upper end of the adjusting piston is provided with a threaded rod, a nut in threaded connection with the threaded rod is arranged on the separation box, the upper end of the threaded rod outside the separation box is provided with a hand wheel, the lower end of the aeration pipe extends out of the separation box and is connected with a reducer pipe, the reducer pipe improves pressure difference to provide suction force for fluid, and the other end of the reducer pipe is communicated with a pipeline connecting piece which is connected with an ozone conveying pipe through the pipeline connecting piece.

Further, the device also comprises a collecting trolley for collecting the impurities filtered by the paper bag filter.

Further, a concentration detector and a PH detector are arranged in the secondary filtering pool.

Further, the secondary filter tank is provided with a water supplementing pipe in a matched mode, and the water supplementing pipe is provided with a water supplementing valve.

Further, the device also comprises a water outlet tank outside the filter cavity of the separation tank provided with the oil scraper, wherein the upper end of the water outlet tank is provided with an opening, a water outlet pipe with an upward water outlet is arranged in the water outlet tank, the water inlet of the water outlet pipe is communicated with the lower end of the filter cavity of the separation tank provided with the oil scraper through a bent pipe, and the water outlet of the water outlet pipe is lower than the upper surface of the opening of the water outlet tank.

Compared with the prior art, the invention has the advantages that:

The product can carry out integrated fine purification on cutting fluid, waste cutting fluid is collected from a workshop and subjected to multistage filtration through a paper bag filter, an aeration assembly, a multipurpose filtration assembly and other structures of the product structure, impurities and greasy dirt are purified layer by layer, so that the fine filtration on the cutting fluid is achieved, and the quality of the purified cutting fluid is improved;

The floating oil collecting assembly fully collects floating oil foam, so that cutting fluid can be inevitably entrained into the floating oil collecting assembly, so that the oil-water separating assembly is customized and arranged, the oil-water separating assembly and the oil-water separating assembly are matched with each other, the skimmed floating oil can be subjected to oil-water separation again, so that waste oil and cutting fluid can be accurately separated, and the separated cutting fluid enters a primary filter tank for purification, so that collected waste liquid can be sufficiently purified;

The product of the invention can realize comprehensive purification of the cutting fluid, and the high-quality cutting fluid after purification reduces human resources and labor intensity, and the recovered cutting fluid has no bacteria, malodor and impurities, and the purified cutting fluid can be effectively recycled without affecting a machine tool.

Drawings

Fig. 1 is a schematic perspective view of an oil collecting and liquid supplying device according to the present invention.

FIG. 2 is a schematic diagram of a purifying tank of the oil collecting and liquid supplying device.

FIG. 3 is a schematic view of a floating oil collection assembly of an oil and liquid collection device according to the present invention.

Fig. 4 is a schematic perspective view of an oil-water separation assembly of the oil collecting and liquid supplying device.

Fig. 5 is a schematic diagram of a top view structure of an oil-water separation assembly of the oil collecting and liquid supplying device.

FIG. 6 is a schematic perspective view of a small aeration assembly of an oil collecting and liquid supplying device of the present invention.

Fig. 7 is a schematic perspective view of a purifying box of the oil collecting and liquid supplying device.

FIG. 8 is a schematic diagram of the oil and liquid collecting and supplying treatment process of the oil and liquid collecting and supplying device.

As shown in the figure, 1, a collecting tank, 2, a pump body component, 3, a water purifying module, 5, a constant pressure liquid supply module, 6, a collecting trolley, 7, a concentration detector, 8 and a PH detector,

2.1, A first submersible pump,

3.1, A paper bag filter, 3.2, an aeration component, 3.3, a floating oil collecting component, 3.4, a multipurpose filtering component, 3.5, a purifying box, 3.6, an oil-water separating component,

3.32 Parts of mounting rod, 3.33 parts of linear bearing, 3.34 parts of floating ball connecting piece, 3.35 parts of floating ball, 3.36 parts of collecting barrel, 3.37 parts of mounting bracket, 3.38 parts of bracket,

3.41, A bag filter, 3.42, a third submersible pump,

3.52, Overflow pipe 3.511, primary filter tank, 3.512 and secondary filter tank,

3.61, A separation box, 3.62, a scraper, 3.63, a buffer elbow, 3.64, a small aeration component, 3.65, a filter screen plate, 3.66, a reducer pipe, 3.67, a pipeline connecting piece, 3.611, a filter cavity, 3.612 and a liquid separating port,

3.647, An air outlet, 3.648, an adjusting piston, 3.643, a threaded rod, 3.644, a nut, 3.645, a rotary hand wheel, 3.646, an aeration pipe, 3.66, a reducer, 3.67, a pipeline connecting piece,

3.641, An ozone inlet pipe, 3.642 and an aerator,

3.7, A water outlet tank, 3.8, a water outlet pipe, 3.613 and a bent pipe,

5.1, A water supplementing pipe, 5.2 and a water supplementing valve.

Detailed Description

It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the scope of the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art in a specific case.

The technical scheme of the present application will be described in detail below with reference to the accompanying drawings in combination with embodiments.

With reference to all the drawings, the oil collecting and liquid supplying device comprises a collecting tank 1 for collecting workshop waste liquid, a pump body assembly 2, a water purifying module 3 and a constant pressure liquid supplying module 5, wherein the pump body assembly 2 is positioned on the accessory of the collecting tank 1 and is easy to manage, and the constant pressure liquid supplying module 5 is not tired in the prior art;

the water purification module 3 comprises a paper bag filter 3.1 for primary filtration, an aeration assembly 3.2, a floating oil collecting assembly 3.3, an oil-water separating assembly 3.6 for separating oil from water collected by the floating oil collecting assembly 3.3, a multipurpose filter assembly 3.4 for secondary filtration and a purifying box 3.5;

A primary filter tank 3.511 and a secondary filter tank 3.512 are arranged in the purifying box 3.5, an overflow pipe 3.52 is arranged in the primary filter tank 3.511, and an overflow outlet of the overflow pipe 3.52 is communicated with the upper end of the secondary filter tank 3.512;

The upper edge of the purifying box 3.5 is provided with a fence, and the structure which is convenient to maintain such as a cat ladder on the purifying box 3.5 is climbed, the main structure of the paper bag filter 3.1 and the multipurpose filtering component 3.4 is arranged above the purifying box 3.5, and the upper mechanism and the lower mechanism are distributed reasonably to use the space;

The pump body assembly 2 comprises at least two first submersible pumps 2.1, the first submersible pumps 2.1 convey the liquid in the collecting tank 1 into the input port of the paper bag filter 3.1, the liquid filtered by the paper bag filter 3.1 enters the primary filter tank 3.511, then the aeration assembly 3.2 carries out aeration oil-water separation, and the floating oil foam of the primary filter tank 3.511 is collected by the floating oil collecting assembly 3.3;

The multipurpose filtering component 3.4 filters the liquid purified by the primary filtering tank 3.511 for the second time and then conveys the liquid into the secondary filtering tank 3.512, so that the purified cutting fluid is ensured to be free of bacteria and malodor, the constant-pressure liquid supply module 5 supplies the liquid filtered by the secondary filtering tank 3.512 at constant pressure, the water supply pressure is kept constant, and the balance between water supply and water use can be kept;

specifically, the oil-water separation assembly 3.6 is composed of a separation tank 3.61 with two filter cavities 3.611, an oil scraping machine 3.62, a buffer bent pipe 3.63, a small aeration assembly 3.64 capable of adjusting the air outlet flow and improving the separation efficiency, and a filter screen plate 3.65, so that the oil-water separation efficiency is enhanced, the oil-water separation is faster, a floating oil collecting barrel for collecting the oil which is scraped by the oil scraping machine 3.62 at last is also arranged on one side of the product of the invention, and the separation tank 3.61 is arranged above the purification tank 3.5;

A liquid separating opening 3.612 is formed between two filter cavities 3.611 of the separation tank 3.61, the liquid separating opening 3.612 is communicated with the two filter cavities 3.611 and is positioned at the upper end position, one end of a buffer bent pipe 3.63 is arranged at the upper end of one filter cavity 3.611 of the separation tank 3.61 and is communicated with the separation tank 3.61, the other end of the buffer bent pipe 3.63 is communicated with a connecting pipeline, a diaphragm pump is arranged on the connecting pipeline, the tail end of the connecting pipeline is positioned in a collecting cylinder of the floating oil collecting assembly 3.3, the buffer bent pipe 3.63 is mainly an oil-water separating inlet, and an external power supply of the diaphragm pump pumps the collected floating oil into the separation tank 3.61 through the connecting pipeline for oil-water separation treatment;

The filter screen plate 3.65 is arranged in the filter cavity 3.611 which is positioned in the buffer bend pipe 3.63 and is lower than the liquid separating port 3.612 and the buffer bend pipe 3.63, the liquid separating port 3.612 and the buffer bend pipe 3.63 are positioned at the same height, and the upper end of the small aeration assembly 3.64 is arranged on the filter screen plate 3.65.

As an embodiment of the present invention, in addition to the above structure, the aeration assembly 3.64 is composed of an ozone inlet pipe 3.641 and an aerator 3.642 positioned in the purifying tank 3.5, the ozone inlet pipe 3.641 is used for delivering ozone to the aerator 3.642, the aerator 3.642 is a disc-type aerator, the disc-type aerator increases the gas-liquid contact area and effectively aerates, and the number of the aerators 3.642 can be properly set according to the capacity of the purifying tank 3.5.

As one embodiment of the invention, besides the structure, the floating oil collecting assembly 3.3 is provided with a mounting rod 3.32, a linear bearing 3.33, a hollow panel type floating ball connecting piece 3.34, a plurality of floating balls 3.35, a collecting barrel 3.36 and a mounting bracket 3.37, wherein the plurality of floating balls 3.35 are arranged outside the collecting barrel 3.36, at least three floating balls 3.35 can be arranged, four floating balls and five floating balls 3.35 can be arranged, the floating balls 3.35 can be floating plates and can be selected according to the requirement so as to float on the liquid level surface of cutting fluid, and the collecting barrel 3.36 is ensured to be positioned on a cutting fluid oil-water separation interface, so that floating oil foam can be collected;

The linear bearing 3.33 is sleeved on the mounting rod 3.32, the mounting rod 3.32 fixes the inner ring of the linear bearing 3.33, the mounting bracket 3.37 is fixed outside the linear bearing 3.33, the length of the mounting bracket 3.37 can be longer, the collecting barrel 3.36 is preferably positioned in the center of liquid, the floating oil collecting assembly 3.3 is mounted in the purifying box 3.5, the mounting rod 3.32, the linear bearing 3.33 and the mounting bracket 3.37 are mutually matched to enable the mounting rod 3.32 to move linearly up and down along with the floating ball floating up and down, the floating ball 3.35 is prevented from deviating to a position which is unfavorable for collecting the floating oil, the floating ball connecting piece 3.34 is mounted above the opening of the collecting barrel 3.36 through the bracket 3.38 with a gap, the mounting rod 3.32 is fixed above the floating ball connecting piece 3.34, a liquid entering space is reserved between the floating ball connecting piece 3.34 and the collecting barrel 3.36, and the floating oil enters the collecting barrel 3.36,

In addition to the above structure, the multipurpose filter assembly 3.4 includes a plurality of bag filters 3.41 connected in parallel through pipelines and a third submersible pump 3.42 for delivering liquid to the bag filters 3.41, wherein the third submersible pump 3.42 is positioned in the primary filter tank 3.511, water filtered by the bag filters 3.41 is delivered into the secondary filter tank 3.512 through pipelines, and the cleanliness of cutting fluid after multiple purification is higher, so that the multipurpose filter assembly is suitable for enterprise users with higher requirements on the quality of the cutting fluid.

As an embodiment of the present invention, in addition to the above structure, the small aeration assembly 3.64 includes an aeration pipe 3.646, a long-strip-shaped air outlet 3.647 is formed at both front and rear ends of the aeration pipe 3.646, an adjusting piston 3.648 capable of moving up and down and sealing the aeration pipe 3.646 is disposed in the aeration pipe 3.646, a threaded rod 3.643 is mounted at the upper end of the adjusting piston 3.648, a nut 3.644 screwed with the threaded rod is disposed on the separation tank 3.61, a hand wheel 3.645 is disposed at the upper end of the threaded rod 3.643 outside the separation tank 3.61, the hand wheel 3.645 is rotated to drive the threaded rod 3.643 to rotate, and then drive the adjusting piston 3.648 to move up or down, so as to adjust the air outlet 3.647, and when the adjusting piston 3.648 is located below the air outlet 3.647, the aeration pipe 3.646 is completely sealed so as not to be capable of air outlet;

The upper end gas outlet 3.647 of the aeration pipe 3.646 extends to the upper surface of the filter screen plate 3.65, is not blocked by the filter screen plate 3.65, can give full play to air, the lower end of the aeration pipe 3.646 extends out of the separation box 3.61 and is connected with a reducer pipe 3.66, the reducer pipe 3.66 improves pressure difference to provide suction for fluid, ozone is sucked into the fluid in place of the aeration mode of an aeration disc, fluid and floating oil doped with cutting fluid are fully mixed, water and oil are accelerated, the other end of the reducer pipe 3.66 is communicated with a pipeline connecting piece 3.67, and the pipeline connecting piece 3.67 is connected with an external ozone conveying pipe.

The oil-water separation assembly 3.6 and the small aeration assembly 3.64 of the product have reasonable and compact structural designs, and the space is utilized to the maximum extent to realize the better technical effect.

As an embodiment of the invention, besides the structure, the invention also comprises a collecting trolley 6 for collecting impurities filtered by the paper bag filter 3.1, the collecting trolley 6 is positioned at one side of the purifying box 3.5 and is close to the position of the paper bag filter 3.1, a concentration detector 7, a PH detector 8, an automatic concentration proportioning structure and the like are arranged in the secondary filtering pool 3.512, a water supplementing pipe 5.1 is matched with the secondary filtering pool 3.512, and a water supplementing valve 5.2 is arranged on the water supplementing pipe 5.1, so that the product of the invention is more intelligent and automatic.

As an embodiment of the invention, in addition to the above structure, in order to ensure that the cleanliness of the discharged cutting fluid is high, waste oil is not contained, the upper end of the water outlet tank 3.7 outside the filter cavity 3.611 of the separation tank provided with the oil scraper 3.62 is provided with an opening, water is easily discharged finally, a water outlet pipe 3.8 with an upward water outlet is arranged in the water outlet tank 3.7, the water inlet of the water outlet pipe 3.8 is communicated with the lower end of the filter cavity 3.611 of the separation tank provided with the oil scraper 3.62 through a bent pipe 3.613, the water inlet of the water outlet pipe 3.8 is positioned at the lower end, and the water outlet of the water outlet pipe 3.8 is lower than the upper surface of the opening of the water outlet tank 3.7, so that the liquid level is always positioned in the water outlet tank 3.7.

In the concrete implementation of the invention, the workshop wastewater is collected into a collecting tank, the first submersible pump sends water into the paper tape filter, the water enters the first-stage filter tank, the third submersible pump in the first-stage filter tank filters from the water sent into the bag filter, and floating oil is fully mixed through the aerator, so that the separation of water and oil is quickened;

The aerator in the first-stage filtering tank works synchronously with the paper tape filtering machine and the first submersible pump, the floating oil is assisted to ascend while filtering, then the floating oil is collected through the floating oil collecting assembly, then the floating oil which is collected and doped with cutting fluid is sent into the oil-water separating assembly through the diaphragm pump to carry out oil-water separation, finally water enters the tank, and oil enters the barrel to complete a purification closed loop;

and finally, the purified water is positioned in the second purifying tank, and the constant pressure liquid supply module is used for supplying constant pressure to keep the constant water supply pressure, so that the balance between water supply and water use can be kept.

The invention and its embodiments have been described above with no limitation, and the actual construction is not limited to the embodiments of the invention as shown in the drawings.

For a clearer illustration of an embodiment of the invention or of a technical solution in the prior art, it is obvious that the figures in the description above are only some embodiments of the invention, from which other figures can be obtained, without inventive effort, for a person skilled in the art.

In summary, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical solution should not be creatively devised without departing from the gist of the present invention.

Claims

1. An oil collecting and liquid supplying device, comprising a collecting tank (1) for collecting waste liquid in a workshop, characterized in that it also comprises a pump body assembly (2), a water purification module (3), and a constant pressure liquid supply module (5);

The water purification module (3) comprises a paper bag filter (3.1) for primary filtration, an aeration component (3.2), a floating oil collection component (3.3), an oil-water separation component (3.6) for separating oil collected by the floating oil collection component (3.3) from water, a multi-purpose filter component (3.4) for secondary filtration, and a purification box (3.5);

The floating oil collection assembly (3.3) is composed of a mounting rod (3.32), a linear bearing (3.33), a float connecting piece (3.34), a plurality of floats (3.35), a collection bucket (3.36), and a mounting bracket (3.37); the plurality of floats (3.35) are mounted outside the collection bucket (3.36); the linear bearing (3.33) is sleeved on the mounting rod (3.32); the mounting bracket (3.37) is fixed outside the linear bearing (3.33); the floating oil collection assembly (3.3) is installed in the purification box (3.5); the float connecting piece (3.34) is installed above the opening of the collection bucket (3.36) through a spaced bracket (3.38); and the mounting rod (3.32) is fixed on the float connecting piece (3.34);

The multi-purpose filter assembly (3.4) is composed of a plurality of bag filters (3.41) connected in parallel through pipelines and a third submersible pump (3.42) for conveying liquid to the bag filters (3.41); the third submersible pump (3.42) is located in the primary filter tank (3.511); the water filtered by the bag filters (3.41) is conveyed to the secondary filter tank (3.512) through pipelines;

A primary filter pool (3.511) and a secondary filter pool (3.512) are provided in the purification box (3.5); an overflow pipe (3.52) is provided in the primary filter pool (3.511); an overflow outlet of the overflow pipe (3.52) is connected to the upper end of the secondary filter pool (3.512);

The pump body component (2) transports the waste liquid in the collection tank (1) to the paper bag filter (3.1), and the liquid filtered by the paper bag filter (3.1) enters the primary filter tank (3.511) and is aerated by the aeration component (3.2), and then the floating oil is collected by the floating oil collection component (3.3);

The multi-purpose filter component (3.4) performs secondary filtration on the liquid purified in the primary filter pool (3.511) and then transports it to the secondary filter pool (3.512), and the constant pressure liquid supply module (5) supplies the filtered liquid in the secondary filter pool (3.512) at a constant pressure;

The oil-water separation component (3.6) comprises a separation box (3.61) having two filter chambers (3.611), an oil scraper (3.62), a buffer elbow (3.63), a small aeration component (3.64) capable of adjusting the air flow rate and improving the separation efficiency, and a filter screen plate (3.65);

A liquid separation port (3.612) is provided between the two filter chambers (3.611) of the separation box (3.61); one end of the buffer elbow (3.63) is installed at the upper end of one of the filter chambers (3.611) of the separation box (3.61); the other end of the buffer elbow (3.63) draws the floating oil collected in the floating oil collection component (3.3) into the separation box (3.61) through a connecting pipe; the filter screen plate (3.65) is installed in the filter chamber (3.611) where the buffer elbow (3.63) is installed, and is lower than the liquid separation port (3.612) and the buffer elbow (3.63); the upper end of the small aeration component (3.64) is installed on the filter screen plate (3.65);

The small aeration assembly (3.64) comprises an aeration pipe (3.646) located in a separation box, the aeration pipe (3.646) is provided with a long strip of air outlets (3.647) at both the front and rear ends, the aeration pipe (3.646) is provided with an adjusting piston (3.648) that can move up and down and seal the aeration pipe (3.646), the upper end of the adjusting piston (3.648) is provided with a threaded rod (3.643), the separation box (3.61) is provided with a nut (3.644) threadedly connected to the threaded rod, and the upper end of the threaded rod (3.643) located outside the separation box (3.61) is provided with a hand wheel (3.645).

2. An oil collecting and liquid supplying device according to claim 1, characterized in that: the aeration component (3.2) is composed of an ozone inlet pipe (3.641) and an aerator (3.642) located in the purification box (3.5), the ozone inlet pipe (3.641) transports ozone to the aerator (3.642), and the aerator (3.642) is a disc aerator.

3. An oil collecting and liquid supplying device according to any one of claims 1-2, characterized in that: the pump body assembly (2) comprises at least two first submersible pumps (2.1), and the first submersible pumps (2.1) transport the liquid in the collection tank (1) to the input port of the paper bag filter (3.1).

4. An oil collecting and liquid supplying device according to claim 1, characterized in that it also includes a water outlet box (3.7) outside the filter chamber (3.611) of the separation box equipped with an oil scraper (3.62), the upper end of the water outlet box (3.7) is open, and a water outlet pipe (3.8) with an outlet facing upward is provided in the water outlet box (3.7), the water inlet of the water outlet pipe (3.8) is connected to the lower end of the filter chamber (3.611) of the separation box equipped with the oil scraper (3.62) through a bent pipe (3.613), and the water outlet of the water outlet pipe (3.8) is lower than the upper surface of the opening of the water outlet box (3.7).

5. The oil collecting and liquid supplying device according to claim 1, characterized in that it also comprises a collecting trolley (6) for collecting impurities filtered by the paper bag filter (3.1).

6. The oil collecting and liquid supplying equipment according to claim 1, characterized in that a concentration detector (7) and a pH detector (8) are provided in the secondary filter tank (3.512).

7. An oil collecting and liquid supplying device according to any one of claims 1, 5 or 6, characterized in that: the secondary filter tank (3.512) is provided with a water supply pipe (5.1), and the water supply pipe (5.1) is provided with a water supply valve (5.2).