CN212707556U - Micro-plastic separation device - Google Patents

Abstract

The utility model relates to a little plastic separation technical field provides little plastic separation device, include: a separation box body, wherein a liquid outlet is formed at the upper part of the separation box body, and a liquid inlet is formed at the lower part of the separation box body; the upper part of the collection box body is communicated with the liquid outlet, and the lower part of the collection box body is communicated with the liquid inlet so as to form a circulation loop between the separation box body and the collection box body; and the vortex mechanism is arranged on the separation box body and is configured to form vortex-shaped water flow with the introduced extracting solution so as to separate the micro plastic from the object to be separated and enter the collection box body through the liquid outlet. When the vortex mechanism works, vortex-shaped water flow generated by the extracting solution near the vortex mechanism washes objects to be separated, the micro plastic suspends in the extracting solution due to low density and enters the collecting box body through the liquid outlet along with the rising of the vortex-shaped water flow, the separation between the micro plastic and other components of the objects to be separated is realized, and a circulation loop is formed between the separating box body and the collecting box body, so that the micro plastic separating device can realize the complete separation of the micro plastic.

Description

Micro-plastic separation device

Technical Field

The utility model relates to a little plastic separation technical field especially relates to little plastic separation device.

Background

Microplastics are generally known as plastics of different morphologies with a diameter of less than 5 mm, including plastic particles, microfibers, foams, and the like, which are often difficult to distinguish by the naked eye and are visually referred to as "PM 2.5 in the sea (particulate matter with an equivalent diameter of 2.5 microns or less)". Various plastics discharged in daily life of human beings are changed into micro plastics with smaller volume under the influence of natural conditions, but cannot be completely degraded.

Taking the micro plastic in seawater as an example, in a hydrodynamic environment, the micro plastic can undergo physical, chemical and biological reactions such as drifting, sedimentation, resuspension, biological migration, organic pollutant adsorption and the like, and the micro plastic is swallowed by a multi-stage food chain in the reaction process, so that the micro plastic cannot be digested, and a large number of organisms can be ill or dead. Micro-plastic contamination in seawater has seriously threatened the survival of marine organisms and the health of human beings.

Wherein, the micro-plastics in the seawater can adhere to the seawater sediments in the sedimentation process, and in order to provide specific data for the detection and pollution control of the marine environment, the micro-plastics in the seawater sediments need to be collected, and the form and the concentration of the micro-plastics need to be detected and researched. At present, the collection method of the micro-plastics in seawater is not standardized, the collection equipment is relatively laggard, the common detection method of the sediment micro-plastics is to collect a certain amount of sediment by a sampler and pull the sediment back to a laboratory for filtration and analysis, and the separation of silt and the micro-plastics is not thorough in the separation process of the micro-plastics.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a little plastic separation device, its thorough separation that can realize little plastics.

The embodiment of the utility model provides a little plastic separation device, include:

a separation box body, wherein a liquid outlet is formed at the upper part of the separation box body, and a liquid inlet is formed at the lower part of the separation box body;

the upper part of the collecting box body is communicated with the liquid outlet, and the lower part of the collecting box body is communicated with the liquid inlet so as to form a circulating loop between the separating box body and the collecting box body;

and the vortex mechanism is arranged on the separation box body and is configured to form vortex-shaped water flow for the introduced extracting solution, so that the micro plastic is separated from the object to be separated and enters the collection box body through the liquid outlet.

According to the utility model discloses little plastic separation device treats that the separation object position is in the middle of the separation box to pour into the extract in the middle of the separation box. When the vortex mechanism works, vortex-shaped water flow is generated by the extracting solution near the vortex mechanism to wash the object to be separated, and the micro plastic is suspended in the extracting solution because the density of the micro plastic is less than that of most other components of the object to be separated, and then enters the collecting box body through the liquid outlet along with the rising of the vortex-shaped water flow, so that the micro plastic and the other components of the object to be separated are separated. And, because form circulation circuit between separation box and the collection box, and then the extract can form the circulation between separation box and collection box, and the collection box is all entered into to the little plastics that wait to separate the object and work as the well and just will vortex mechanism close, and then this kind of little plastic separator can realize the thorough separation of little plastics.

According to the utility model discloses an embodiment, the separator box includes toper box and back taper box, the toper box is located back taper box top, the liquid outlet form in the lateral wall of toper box.

According to the utility model discloses an embodiment, the separation box still includes the column box, the column box is located the below of back taper box, the inlet is located the lateral wall of column box, the toper box includes the detachable roof, the column box includes the detachable bottom plate, vortex mechanism install in the bottom plate.

According to the utility model discloses an embodiment, be provided with the filter screen in the middle of the collection box, the top of filter screen be provided with form in the mouth that washes of the lateral wall of collection box, the below of filter screen is provided with the recoil spray tube, be formed with on the recoil spray tube orientation rather than corresponding the trompil of filter screen, the aperture of trompil is less than the aperture of filter screen.

According to the utility model discloses an embodiment, the quantity of filter screen is the multilayer, and along from last multilayer in the direction extremely down the filtration footpath of filter screen reduces gradually, every layer the top of filter screen all is provided with wash the mouth, and every layer the below of filter screen all is provided with the recoil spray tube.

According to an embodiment of the present invention, the collecting box body comprises a first box body, a second box body and a third box body which are arranged in sequence; the first box body is connected with the second box body through flange faces, and the second box body is connected with the third box body through flange faces, and the filter screens are respectively arranged in the first box body, the second box body and the third box body.

According to the utility model discloses an embodiment still includes:

the first liquid storage tank is positioned between the liquid outlet and the collection tank body;

the liquid outlet with through first pipeline section intercommunication between the first liquid reserve tank, first liquid reserve tank with collect through the second pipeline section intercommunication between the box, the entrance point of first pipeline section is provided with filters piece, the second pipeline section is provided with first control valve.

According to the utility model discloses an embodiment, the second pipeline section stretches into collect the box, just the second pipeline section include body pipeline section and many with the body pipeline section is the extension pipeline section of setting for the angle, many the extension pipeline section winds the body pipeline section distributes.

According to the utility model discloses an embodiment still includes:

and the second liquid storage tank is communicated with the flushing port and the backflushing spray pipe.

According to the utility model discloses an embodiment still includes:

the first liquid storage tank is positioned between the liquid outlet and the collection tank body;

the liquid outlet is communicated with the first liquid storage tank through a first pipe section, the first liquid storage tank is communicated with the collection tank body through a second pipe section, a filter element is arranged at the inlet end of the first pipe section, and a first control valve is arranged at the second pipe section;

the second liquid storage tank is communicated with the flushing port and the backflushing spray pipe, and a second control valve is arranged between the second liquid storage tank and the flushing port as well as between the second liquid storage tank and the backflushing spray pipe;

the first pressure gauge is used for detecting the hydraulic pressure in the space above the filter screen in the first box body;

a second pressure gauge for detecting a hydraulic pressure in a space below the filter screen in the third tank;

and the controller is connected with the first pressure gauge and the second pressure gauge, and controls the first control valve to be disconnected and the second control valve to be opened when the pressure difference between a first pressure value measured by the first pressure gauge and a second pressure value measured by the second pressure gauge gradually increases until the pressure value tends to be stable.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a micro plastic separation device provided by an embodiment of the present invention;

FIG. 2 is a schematic structural view of a micro plastic separation device with a partial sectional effect according to an embodiment of the present invention;

fig. 3 is a schematic view illustrating the installation of the filter element of the micro plastic separation device according to an embodiment of the present invention;

fig. 4 is a schematic partial structural view of a micro plastic separation device provided in an embodiment of the present invention;

fig. 5 is an exploded schematic view of a collection box provided by an embodiment of the present invention;

reference numerals:

1. separating the box body; 2. a vortex mechanism; 3. a base plate; 4. a first tube section; 5. a first liquid storage tank; 6. a second liquid storage tank; 7. a first control valve; 8. a second control valve; 9. a second tube section; 10. a collection box body; 101. a top cover; 102. an adapter; 103. a first case; 104. a backflushing spray pipe; 105. a second case; 106. a bottom cover; 107. a liquid discharge pipe; 108. a filter screen; 109. a third box body; 11. back flushing the pipe; 111. a first backflush branch; 112. a second recoil branch; 12. a first pressure gauge; 13. a second pressure gauge; 14. a liquid inlet pipe; 15. a booster pump; 16. and (4) a filter element.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the embodiments of the present invention can be understood in specific cases by those skilled in the art.

In embodiments of the invention, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Referring to fig. 1 to 5, the micro plastic separation device according to the embodiment of the present invention includes a separation box 1, a collection box 10 and a vortex mechanism 2. A liquid outlet is formed at the upper part of the separation box body 1, and a liquid inlet is formed at the lower part of the separation box body; the upper part of the collection box body 10 is communicated with the liquid outlet, and the lower part is communicated with the liquid inlet, so that a circulation loop is formed between the separation box body 1 and the collection box body 10; the vortex mechanism 2 is installed on the separation box body 1, and the vortex mechanism 2 is configured to form a vortex-shaped water flow to the introduced extracting solution, so that the micro plastic is separated from the object to be separated and enters the collection box body 10 through the liquid outlet.

According to the utility model discloses little plastic separation device treats that the separation object position is in the middle of separation box 1 to pour into the extract in the middle of to separation box 1. When the vortex mechanism 2 works, vortex-shaped water flow is generated by the extracting solution near the vortex mechanism 2 to wash the object to be separated, and the micro plastic is suspended in the extracting solution because the density of the micro plastic is smaller than most other components of the object to be separated, and then enters the collecting box body 10 through the liquid outlet along with the rising of the vortex-shaped water flow, so that the micro plastic and the other components of the object to be separated are separated. And, because form the circulation circuit between separator box 1 and the collection box 10, and then the extract can form the circulation between separator box 1 and collection box 10, just the little plastics that wait to separate the object among them all enter into collection box 10 and close vortex mechanism 2, and then this kind of little plastic separator can realize the thorough separation of little plastics.

According to the utility model discloses little plastic separation device, what separation box 1 indicated is the box that is used for holding the object that treats the separation, what collection box 10 indicated is the box that is used for collecting little plastics. For the sake of convenience of distinction, therefore denominated separator tank 1 and collection tank 10, respectively, it should be understood that separator tank 1 and collection tank 10 may take any of the tank configurations disclosed in the prior art. In addition, the embodiment of the utility model provides an use the separation of little plastics among the sea water deposit to explain as the example, do not lose the commonality, the little plastics separator of the embodiment of the utility model provides a can also be used to other objects of waiting to separate and be the separation of little plastics in the middle of.

According to the utility model discloses little plastic separation device, the type of extract is unrestricted, and is specifically contingent and specific, for example the extract can adopt sodium chloride solution.

According to the utility model discloses little plastic separation device, separation box 1 includes the toper box, and the liquid outlet is formed at the lateral wall of toper box. After the extracting solution is injected into the separating box body 1, the liquid level does not overflow the liquid outlet all the time. When the vortex mechanism 2 is started to form vortex-shaped water flow, the vortex-shaped water flow carries micro plastic to be discharged from the liquid outlet. The setting of toper box not only can make things convenient for vortex form rivers to pass through the liquid outlet, can also accomplish the extraction of little plastics and then save the extract under the condition that adopts less extract.

In one embodiment, the separation box 1 and the vortex mechanism 2 or other fittings together form a vortex type separation box.

According to the utility model discloses little plastic separation device, 1 lower part of separation box includes the back taper box, and separation box 1 is through the back taper box of lower part, can be convenient for the formation of vortex form rivers.

In an embodiment, the conical box and the inverted conical box can be arranged at the same time, and the conical box is located above the inverted conical box, so that the obtained separation box 1 can have the advantages of facilitating the outflow of the extracting solution carrying the micro-plastic, saving the extracting solution and facilitating the formation of vortex-shaped water flow.

According to the utility model discloses little plastic separation device, separation box 1 still includes the column box except including above-mentioned toper box and back taper box, and the column box is located the below of back taper box. Under this kind of condition, the inlet is located the lateral wall of column box, and the liquid outlet is located the lateral wall of toper box, and then when extract among the little plastic separation device circulates between separator box 1 and collection box 10, extract gets into separator box 1 from the inlet to flow out separator box 1 from the liquid outlet. Wherein the conical box body comprises a detachable top plate to facilitate placing the object to be separated into the separation box body 1. In addition, the column box includes detachable bottom plate 3, and vortex mechanism 2 installs in bottom plate 3, also is through setting up detachable bottom plate 3 with the dismouting of convenient vortex mechanism 2.

According to the utility model discloses an embodiment is provided with filter screen 108 in the middle of collecting box 10, and is provided with the mouth that washes that is formed at the lateral wall of collecting box 10 above filter screen 108, and the below of every layer of filter screen 108 is provided with recoil spray tube 104. When the filter screen 108 is blocked, the flushing port and the backflushing spray pipe 104 can be opened to flush the filter screen 108, so that the problem of blockage of the filter screen 108 is solved. Wherein, wash the mouth and can wash the filter screen 108 top along horizontal direction or approximate horizontal direction, avoid filter screen 108 top to form and pile up, the recoil spray tube 104 washes filter screen 108 from supreme again this moment, and then can wash out the granule that blocks up at filter screen 108 mesh.

According to the utility model discloses an embodiment is provided with multilayer filter screen 108 in the middle of collecting box 10, and reduces gradually along the filtration diameter from last multilayer filter screen 108 to the orientation down. When the extracting solution carrying the micro-plastic is introduced into the collecting box body 10 from the upper part of the collecting box body 10, the extracting solution carrying the micro-plastic sequentially passes through the plurality of layers of filter screens 108 from top to bottom. Because the filter diameter of the filter screen 108 is gradually reduced from top to bottom, the micro plastic with the largest size stays on the uppermost layer of the filter screen 108, and the size of the micro plastic on the filter screen 108 is smaller toward the bottom. Furthermore, the collection box 10 can realize multi-stage filtration, and micro plastics with different sizes are separated by the filter screens 108 with different sizes, so that the separation efficiency is high and the operation is convenient.

In one embodiment, when the filter screens 108 in the collection box 10 are multi-layered, a flushing opening is disposed above each layer of filter screens 108, and a back flushing nozzle 104 is disposed below each layer of filter screens 108, so as to solve the problem of blockage of each layer of filter screens 108 by matching the flushing opening with the back flushing nozzle 104.

In one embodiment, the backflushing nozzle 104 is formed with an opening facing the corresponding filter screen 108, and the opening has a smaller diameter than the filter screen 108. When the filter screen 108 has only one layer, the aperture of the opening of the backflushing spray pipe 104 is smaller than that of the filter screen 108 of the layer; when the filter screens 108 are multi-layered, the aperture of the opening of the back flushing nozzle 104 is smaller than the apertures of all the filter screens 108, thereby preventing impurities from entering the back flushing nozzle 104.

In one embodiment, the collection box 10 comprises a first box 103, a second box 105 and a third box 109 arranged in sequence; the first box 103 and the second box 105, and the second box 105 and the third box 109 are connected by flange surfaces, and a layer of filter screen 108 is respectively arranged in the first box 103, the second box 105 and the third box 109. Because of the flange surface connection between two adjacent boxes of the three boxes (i.e. the first box 103, the second box 105 and the third box 109) of the collecting box 10, the reliability of the connection can be ensured. After the micro-plastic separation is completed, the three boxes can be separated to conveniently obtain the micro-plastic on each layer of the filter screen 108.

In one embodiment, collection tank 10 is a cylindrical cylinder. Of course, the collection container 10 is not limited to the above embodiments, and the collection container 10 may be constructed in any other feasible manner.

In one embodiment, the first housing 103 includes a removable top cover 101 and the third housing 109 includes a removable bottom cover 106. For example, the top cover 101 of the first housing 103 and the bottom cover 106 of the third housing 109 can be assembled and disassembled by threads.

In one embodiment, the side walls of the first box 103, the second box 105 and the third box 109 are respectively formed with two through holes, and the two through holes are respectively located above and below the filter screen 108, and the through holes above the filter screen 108 are correspondingly formed with the flushing ports. Referring to fig. 4, the adapter 102 may be mounted at two through holes, and the adapter 102 may be fixed by welding or other methods. The upper adapter 102 is communicated with a first recoil branch 111; one end of the lower adapter 102 is connected to the second backflushing branch 112 and the other end is connected to the backflushing nozzle 104. When the filter screen 108 has three layers, three first backflushing branches 111 and three second backflushing branches 112 are correspondingly arranged on the micro plastic separation device.

According to the utility model discloses an embodiment, little plastic separation device still includes first liquid reserve tank 5, and wherein first box 103 is located between liquid outlet and the collection box 10, also is located the low reaches of liquid outlet, and is located the upper reaches of collecting box 10, and then the extract carries little plastic and can get into in the middle of first liquid reserve tank 5 after flowing out separation box 1 from the liquid outlet. Through set up first liquid reserve tank 5 between liquid outlet and collection box 10, can be so that even if the jam has taken place for collection box 10, do not influence the separation operation in the middle of the separation box 1 yet, the extract can carry little plastics all the time and get into first liquid reserve tank 5.

In one embodiment, the first reservoir 5 is located upstream of the collection chamber 10 and the first reservoir 5 is located above the collection chamber 10, thereby facilitating the draining of any extract from the microplastic separation device through the collection chamber 10 (via the drain 107 at the bottom of the collection chamber 10) for subsequent use after the microplastic separation is completed.

In one embodiment, the liquid outlet and the first liquid storage tank 5 are communicated through a first pipe section 4, the first liquid storage tank 5 and the collection box body 10 are communicated through a second pipe section 9, and the inlet end of the first pipe section 4 is provided with a filter member 16. Filter piece 16 through the entrance point setting at first pipeline section 4, and then make the extract carry the in-process that the micro plastics got into first pipeline section 4, can be earlier through the filtration of filtering piece 16, prevent that large granule silt from getting into collection box 10 to further guarantee the separation effect of micro plastics.

Since the size of the micro-plastic is typically less than 5 mm in diameter (it is not required that the micro-plastic be a regular sphere or circle, so the "diameter" is merely exemplary), the filter size of the filter element 16 may be 5 mm, or may be greater than five mm, to ensure that the micro-plastic is able to enter the first tube section 4. The filter element 16 here can be a primary filter element in comparison to the subsequent filter element 108, i.e. the filter element 16 only serves as a primary filter element in comparison to the filter element 108.

In one embodiment the second pipe section 9 is provided with a first control valve 7. When a blockage occurs in the collection tank 10, the first control valve 7 disconnects the second pipe section 9 so that the solution in the first reservoir 5 no longer enters the collection tank 10. At this point, the filter screen 108 may be backwashed through the flush port and the backwash nozzle 104 to address the problem of clogging of the collection tank 10.

In one embodiment, the second pipe section 9 extends into the collection tank 10, and the second pipe section 9 includes a body pipe section and a plurality of extension pipe sections forming a set angle with the body pipe section, and the plurality of extension pipe sections are distributed around the body pipe section. Through the arrangement of the extension pipe section, the micro-plastic can be relatively uniformly distributed on the surface of the filter screen 108, and blockage caused by deposition of micro-plastic particles is avoided.

In one embodiment, the body section and the extension section are perpendicular. At this time, if the number of the extension pipe sections is two, the quality inspection of the two extension pipe sections and the main body pipe section is similar to a T shape. Of course, the angle between the body tube section and the plurality of extension tube sections is not limited by the examples herein. And, the number of extension pipe sections can also be more than three.

According to the embodiment of the utility model, little plastic separation device still includes second liquid reserve tank 6, and second liquid reserve tank 6 intercommunication is washed mouthful and recoil spray tube 104. The extracting solution is stored in the second liquid storage tank 6, and when the collecting tank 10 is blocked, the flushing liquid is provided for the flushing port and the backflushing spray pipe 104 through the second liquid storage tank 6.

According to the utility model discloses an embodiment, little plastic separation device includes above-mentioned first liquid reserve tank 5 and second liquid reserve tank 6. Wherein, communicate through first pipeline section 4 between first liquid reserve tank 5 and the liquid outlet, communicate through second pipeline section 9 between first liquid reserve tank 5 and the collection box 10, and first pipeline section 4 entrance point is provided with and filters piece 16, and second pipeline section 9 is provided with first control valve 7. A second control valve 8 is arranged between the second reservoir 6 and the flushing port and the backflush nozzle 104, for example, the second reservoir 6 is connected to the flushing port and the backflush nozzle 104 via a backflush line 11, and the backflush line 11 is provided with the second control valve 8. On this basis, when the collection tank 10 includes the first tank 103, the second tank 105, and the third tank 109, the micro plastic separation apparatus further includes a first pressure gauge 12, a second pressure gauge 13, and a controller. The first pressure gauge 12 is used for detecting the hydraulic pressure in the space above the filter screen 108 in the first box 103, the second pressure gauge 13 and the hydraulic pressure in the space below the filter screen 108 in the third box 109, the controller is connected with the first pressure gauge 12 and the second pressure gauge 13, and the first control valve 7 is controlled to be disconnected and the second control valve 8 is controlled to be opened when the pressure difference between the first pressure value measured by the first pressure gauge 12 and the second pressure value measured by the second pressure gauge 13 gradually increases until the pressure difference tends to be stable.

Wherein, when the pressure difference between the first pressure value measured by the first pressure gauge 12 and the second pressure value measured by the second pressure gauge 13 gradually increases, it indicates that in the collection box 10, the micro plastic particles are gradually deposited on the filter screen 108, the flow rate through the filter screen 108 gradually decreases to cause the pressure value to change, and when the pressure difference between the first pressure value measured by the first pressure gauge 12 and the second pressure value measured by the second pressure gauge 13 tends to be stable, it indicates that at least one layer of the filter screen 108 is blocked. The first control valve 7 is then now opened so that the extraction liquid with the micro-plastic no longer enters the collection tank 10. And the second control valve 8 is opened, so that the extracting solution in the second liquid storage tank 6 washes the filter screen 108 through the washing port and the backflushing spray pipe 104, and the problem of blockage is solved.

In one embodiment, pressure gauges may be further disposed corresponding to the filter screens 108, so as to determine the filter screen 108 that is blocked based on a pressure value change of each pressure gauge, and accordingly open the flushing port and the backflushing nozzle 104 in a targeted manner.

According to the utility model discloses an embodiment is connected with feed liquor pipe 14 between the lower part of collection box 10 and the inlet, and feed liquor pipe 14 is provided with booster pump 15, circulates in the middle of the circulation circuit through 15 drive extract of booster pump.

In one embodiment, the bottom of the collection tank 10 is provided with a drain 107. After the micro-plastic separation is completed, the drain pipe 107 may be opened to drain the impurities at the bottom of the collection chamber 10.

Adopt the utility model discloses little plastic separation device carries out little plastic separation, include: the seawater sediment is first placed at the bottom of the separation tank 1. Add right amount of extract in first liquid reserve tank 5 and second liquid reserve tank 6, close second control valve 8, open first control valve 7, start booster pump 15, vortex mechanism 2, the extract in the first liquid reserve tank 5 flows through collection box 10 and lets in 1 bottom of separator box, form vortex form rivers through vortex mechanism 2 and erode the deposit, because the density of little plastics is less than other components of deposit, little plastics suspend in the extract, and then rise to the liquid outlet and flow back to first liquid reserve tank 5 through first pipe segment 4 through filtering piece 16 along with vortex form rivers, realize the hierarchical filtration enrichment of little plastics through multistage filter screen 108 through collection box 10 again. The extracting solution enters the separating box body 1 again through the booster pump 15 to continuously extract the micro plastic particles.

In the operation process of the micro-plastic separation device, when the pressure difference of the numerical values displayed by the first pressure gauge 12 and the second pressure gauge 13 on the collection box body 10 is gradually increased until the pressure difference is stable, the situation that the filter screen 108 is blocked in the collection box body 10 is explained, at the moment, the first control valve 7 is closed, the second control valve 8 is opened, the extracting solution in the second liquid storage box 6 is simultaneously washed on the upper surface and the lower surface of the filter screen 108 through the washing port and the backflushing spray pipe 104, and the extracting solution can be finally introduced into the separation box body 1 for micro-plastic extraction.

When the difference between the values displayed by the first pressure gauge 12 and the second pressure gauge 13 is restored to the original difference, indicating that the backflushing of the filter screen 108 is completed, the second control valve 8 is closed, and the first control valve 7 is opened to continue the micro-plastic filtering. And circulating for a plurality of rounds until the micro-plastic is basically separated, closing the vortex mechanism 2, the booster pump 15, the first control valve 7 and the second control valve 8, opening the liquid discharge pipe 107 at the bottom of the collection box body 10 to discharge the extracting solution in the collection box body 10, and completing the micro-plastic grading separation of the seawater sediments.

The above embodiments are merely illustrative, and not restrictive, of the present invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalent substitutions may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and all of the technical solutions should be covered by the scope of the claims of the present invention.

Claims (10)

1. A micro-plastic separation device, comprising:

a separation box body, wherein a liquid outlet is formed at the upper part of the separation box body, and a liquid inlet is formed at the lower part of the separation box body;

the upper part of the collecting box body is communicated with the liquid outlet, and the lower part of the collecting box body is communicated with the liquid inlet so as to form a circulating loop between the separating box body and the collecting box body;

and the vortex mechanism is arranged on the separation box body and is configured to form vortex-shaped water flow for the introduced extracting solution, so that the micro plastic is separated from the object to be separated and enters the collection box body through the liquid outlet.

2. A micro-plastic separation device as claimed in claim 1, wherein the separation box comprises a conical box body and an inverted conical box body, the conical box body is located above the inverted conical box body, and the liquid outlet is formed in the side wall of the conical box body.

3. A micro-plastic separation device according to claim 2, wherein the separation box further comprises a cylindrical box body, the cylindrical box body is located below the inverted conical box body, the liquid inlet is located on a side wall of the cylindrical box body, the conical box body comprises a detachable top plate, the cylindrical box body comprises a detachable bottom plate, and the vortex mechanism is mounted on the bottom plate.

4. A micro plastic separation device according to any one of claims 1 to 3, wherein a filter screen is arranged in the collection box, a flushing port formed on the side wall of the collection box is arranged above the filter screen, a backflushing spray pipe is arranged below the filter screen, an opening facing the filter screen corresponding to the backflushing spray pipe is formed on the backflushing spray pipe, and the aperture of the opening is smaller than that of the filter screen.

5. The micro-plastic separation device according to claim 4, wherein the number of the filter screens is multiple, the filter diameters of the multiple filter screens are gradually reduced along the direction from top to bottom, the flushing port is arranged above each layer of the filter screens, and the backflushing spray pipe is arranged below each layer of the filter screens.

6. A micro-plastic separation device according to claim 5, wherein the collection box comprises a first box, a second box and a third box which are arranged in sequence; the first box body is connected with the second box body through flange faces, and the second box body is connected with the third box body through flange faces, and the filter screens are respectively arranged in the first box body, the second box body and the third box body.

7. A microplastic separation device of any one of claims 1 to 3, further comprising:

the first liquid storage tank is positioned between the liquid outlet and the collection tank body;

the liquid outlet with through first pipeline section intercommunication between the first liquid reserve tank, first liquid reserve tank with collect through the second pipeline section intercommunication between the box, the entrance point of first pipeline section is provided with filters piece, the second pipeline section is provided with first control valve.

8. A micro-plastic separation device according to claim 7, wherein the second pipe section extends into the collection tank, and the second pipe section comprises a body pipe section and a plurality of extension pipe sections which form a set angle with the body pipe section, and the plurality of extension pipe sections are distributed around the body pipe section.

9. A microplastic separation device according to claim 4, further comprising:

and the second liquid storage tank is communicated with the flushing port and the backflushing spray pipe.

10. A microplastic separation device according to claim 6, further comprising:

the first liquid storage tank is positioned between the liquid outlet and the collection tank body;

the liquid outlet is communicated with the first liquid storage tank through a first pipe section, the first liquid storage tank is communicated with the collection tank body through a second pipe section, a filter element is arranged at the inlet end of the first pipe section, and a first control valve is arranged at the second pipe section;

the second liquid storage tank is communicated with the flushing port and the backflushing spray pipe, and a second control valve is arranged between the second liquid storage tank and the flushing port as well as between the second liquid storage tank and the backflushing spray pipe;

the first pressure gauge is used for detecting the hydraulic pressure in the space above the filter screen in the first box body;

a second pressure gauge for detecting a hydraulic pressure in a space below the filter screen in the third tank;

and the controller is connected with the first pressure gauge and the second pressure gauge, and controls the first control valve to be disconnected and the second control valve to be opened when the pressure difference between a first pressure value measured by the first pressure gauge and a second pressure value measured by the second pressure gauge gradually increases until the pressure value tends to be stable.

Images