WO2020220995A1 - 一种复合滤芯及挥发性有机物净化装置 - Google Patents

一种复合滤芯及挥发性有机物净化装置 Download PDF

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Publication number
WO2020220995A1
WO2020220995A1 PCT/CN2020/084711 CN2020084711W WO2020220995A1 WO 2020220995 A1 WO2020220995 A1 WO 2020220995A1 CN 2020084711 W CN2020084711 W CN 2020084711W WO 2020220995 A1 WO2020220995 A1 WO 2020220995A1
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Prior art keywords
filter
cavity
filter element
composite
activated carbon
Prior art date
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PCT/CN2020/084711
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English (en)
French (fr)
Inventor
石爱军
何万清
聂磊
Original Assignee
北京市环境保护科学研究院
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority claimed from CN201910355691.XA external-priority patent/CN109966816A/zh
Priority claimed from CN201920613868.7U external-priority patent/CN209967953U/zh
Application filed by 北京市环境保护科学研究院 filed Critical 北京市环境保护科学研究院
Publication of WO2020220995A1 publication Critical patent/WO2020220995A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • B01D46/12—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/38—Removing components of undefined structure
    • B01D53/44—Organic components

Definitions

  • the present disclosure relates to the technical field of exhaust gas purification, and in particular, to a composite filter element and a volatile organic compound purification device.
  • VOCs volatile organic compounds
  • the adsorption purification device configured to adsorb and purify volatile organic compounds has technical problems such as being easily polluted by impurities, poor adsorption and purification effect, and high cost of use.
  • the objectives of the present disclosure include, for example, to provide a composite filter element and a volatile organic compound purification device, which can increase the area of the adsorption bed per unit volume of the adsorption device, reduce the pressure drop of gas filtration, and achieve the effect of high filtration and purification efficiency, and, The overall use cost is lower.
  • the embodiment of the present disclosure provides a composite filter element, which includes a primary filter body and a filter body, the filter body has a hollow cylindrical structure, and the primary filter body includes a first filter membrane layer and a second filter membrane layer, The second filter membrane layer is sheathed on the outer surface of the filter body, and the first filter membrane layer is sheathed on the outer surface of the second filter membrane layer.
  • the first filter membrane layer includes at least one of composite water-absorbing fibers, electret polypropylene fiber filter layers, spray-melted polypropylene oil-absorbing fibers, spray-melted polypropylene fibers, and primary filter fibers.
  • the second filter membrane layer includes at least one of activated carbon non-woven fabric, granular activated carbon, activated carbon fiber roll, activated carbon fiber felt, and filter cotton.
  • the first filter membrane layer has a circular or circular folded structure
  • the second filter membrane layer has a circular or circular folded structure
  • the filter body includes an outer mesh, an adsorption filter layer, and an inner mesh, the inner mesh is disposed on the inner surface of the adsorption filter layer, and the outer mesh is disposed on the outer surface of the adsorption filter layer.
  • the filter body further includes a reinforcing rod, and the reinforcing rod is arranged in the middle of the adsorption filter layer.
  • the adsorption filter layer of the filter body includes an activated carbon filter layer or a molecular sieve filter layer;
  • the activated carbon filter layer includes at least one of granular activated carbon, honeycomb activated carbon, hollow cylindrical activated carbon and activated carbon fiber filter cotton;
  • the molecular sieve filter layer includes at least one of a particulate molecular sieve, a honeycomb molecular sieve, and a hollow cylindrical molecular sieve.
  • the composite filter element further includes a handle cover plate and an end cover sealing plate disposed oppositely, the handle cover plate is located at one end of the filter body and the preliminary filter body, and the end cover sealing plate is located at the end of the filter body.
  • the handle cover plate is located at one end of the filter body and the preliminary filter body
  • the end cover sealing plate is located at the end of the filter body. The filter body and the other end of the preliminary filter body.
  • the embodiment of the present disclosure also provides a volatile organic compound purification device, which includes the above-mentioned composite filter element.
  • the purification device further includes a box body that includes an air inlet, a filter cavity, and an air outlet that are connected in sequence, and the composite filter element is installed in the box body and extends into the filter cavity, So that the gas to be purified enters from the air inlet, flows through the composite filter element, and is discharged from the air outlet.
  • the filter cavity includes a first cavity and a second cavity that communicate with each other, the inlet of the first cavity is in communication with the air inlet, and the outlet of the second cavity is connected with the air outlet.
  • the box body is provided with a plurality of filter element installation holes corresponding to the first cavity, and the composite filter elements are installed in the filter element installation holes in a one-to-one correspondence, so that the gas to be purified can pass from the air inlet Enter, flow through the second cavity after passing through the composite filter element, and exhaust from the air outlet.
  • a filter element guide rail is provided under the filter element installation hole, and the composite filter element is installed in the filter element installation hole through the filter element guide rail.
  • the composite filter element includes a handle cover plate and an end cover sealing plate disposed oppositely, and the composite filter element is embedded in the filter cavity;
  • the handle cover plate is sealed with the box body, the end cover sealing plate is provided with a first vent hole, or the handle cover plate is provided with a second vent hole, and the end cover sealing plate is connected to the box body.
  • the body is sealed so that the gas to be purified flows into the second cavity through the first vent hole or the second vent hole after passing through the composite filter element.
  • the handle cover plate and the box body are sealed by a rubber member
  • the end cover sealing plate and the box body are sealed by a rubber member
  • At least one one-way pressure relief valve is installed in at least one of the filter element mounting holes, and the pressure relief direction of the one-way pressure relief valve is a one-way direction from the first cavity to the second cavity. Pressure relief direction.
  • the filter cavity includes a first filter cavity, a second filter cavity, and a gas circulation cavity
  • the first filter cavity and the second filter cavity are located on both sides of the gas circulation cavity, And respectively communicate with the gas circulation cavity, the inlet of the first filter cavity and the inlet of the second filter cavity are both in communication with the air inlet, the outlet of the first filter cavity and the The outlet of the second filter cavity is in communication with the inlet of the gas circulation cavity, and the outlet of the gas circulation cavity is in communication with the gas outlet;
  • the box body is provided with a plurality of filter element mounting holes, the filter element mounting holes can be respectively corresponding to the first filter cavity and the second filter cavity, and the composite filter element is installed in the one-to-one correspondence.
  • the filter element installation hole is used to allow the gas to be purified to enter from the air inlet, flow through the gas circulation cavity after passing through the composite filter element, and be discharged from the air outlet.
  • a filter element guide rail is provided under the filter element installation hole, and the composite filter element is installed in the filter element installation hole through the filter element guide rail.
  • the purification device further includes a controller, a sensor, and an alarm device;
  • Both the sensor and the alarm device communicate with the controller, and the sensor is arranged in the filter cavity and located at the air outlet end of the composite filter element, and is configured to output a signal representing the pressure drop in the filter cavity
  • the controller is configured to control the state of the alarm device or the one-way pressure relief valve according to the signal output by the sensor.
  • the composite filter element and the volatile organic compound purification device can realize the filtration of air and exhaust gas and the integrated purification of VOCs adsorption. It has compact structure, automatic operation, high purification efficiency, recyclable filter body, low secondary pollution, low cost, Good economic benefits.
  • Figure 1 is a cross-sectional view of a first composite filter element provided by an embodiment of the disclosure
  • FIG. 2 is a perspective view of the first composite filter element provided by an embodiment of the disclosure.
  • Figure 3 is a cross-sectional view of a second composite filter element provided by an embodiment of the disclosure.
  • FIG. 4 is a schematic structural diagram of a first volatile organic compound purification device provided by an embodiment of the disclosure.
  • Figure 5 is a sectional view of Figure 4.
  • FIG. 6 is a schematic diagram of a second volatile organic compound purification device provided by an embodiment of the disclosure.
  • FIG. 7 is a schematic diagram of a controller and related components provided by an embodiment of the disclosure.
  • FIG. 8 is a cross-sectional view of a third type of volatile organic compound purification device provided by an embodiment of the disclosure.
  • Icon 100-composite filter element; 10-handle cover plate; 101-second air vent; 102-hand end sealing seat; 12-filter body; 121-outer net; 123-adsorption filter layer; 125-inner net; 126- Reinforcement rod; 13-preliminary removal filter body; 132-first membrane layer; 135-second membrane layer; 15-end cover sealing plate; 151-first vent hole; 152-vent hole; 16-rubber piece 103-Operation handle; 104-Exhaust end sealing seat; 105-Oil-resistant gasket; 156-Test port; 200-Volatile organic compound purification device; 20-Box body; 201-Filter cavity; 21-Air inlet; 22 -First cavity; 23-second cavity; 24-air outlet; 225-filter element mounting hole; 227-filter element guide rail; 25-sensor; 224-first filter cavity; 226-second filter cavity; 228 -Gas circulation chamber; 26-controller; 27-alarm device; 28-one-way
  • the terms “set” and “connection” should be interpreted broadly, for example, it can be a fixed connection or a detachable connection, or Integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
  • the specific meaning of the above-mentioned terms in the present disclosure can be understood in specific situations.
  • VOCs refers to organic compounds that participate in atmospheric photochemical reactions, or organic compounds determined by measurement or accounting according to prescribed methods.
  • VOCs include non-methane hydrocarbons (alkanes, alkenes, alkynes, aromatic hydrocarbons, etc.), oxygen-containing organics (aldehydes, ketones, alcohols, ethers, etc.), chlorine-containing organics, nitrogen-containing organics, sulfur-containing organics, etc. It is an important precursor for the formation of ozone (O 3 ) and fine particulate matter (PM 2.5 ) pollution.
  • O 3 ozone
  • PM 2.5 fine particulate matter
  • VOCs volatile organic compounds
  • the working principle of the VOCs adsorption device is that the exhaust gas is powered by the fan, and the negative pressure enters the adsorption box and then enters the adsorption layer.
  • the activated carbon or molecular sieve has the characteristics of many microporous structure, large specific surface area and strong adsorption capacity, so that the exhaust gas is The large-surface porous activated carbon adsorbent contacts, the pollutants in the exhaust gas are adsorbed on the inner surface of the activated carbon or molecular sieve to separate the pollutants from the gas, and the purified gas is discharged at high altitude.
  • the purification efficiency of a well-designed device can reach 90% the above.
  • an adsorption purification device configured to adsorb and purify volatile organic compounds has a technical problem that the usable adsorption area per unit volume is small.
  • the study also found that the flat bed structure of the VOCs adsorption device in the related technology is simple, and it is relatively difficult to operate and replace during its use.
  • the composite filter element and the volatile organic compound purification device provided in this embodiment can effectively alleviate this technical problem. Specifically, the specific structure of the composite filter element and the volatile organic compound purification device will be described in detail below.
  • FIG. 1 is a cross-sectional view of the first composite filter element 100 provided in this embodiment.
  • the composite filter element 100 includes a handle cover plate 10, a filter body 12, a primary filter body 13, and an end cover sealing plate 15.
  • the primary filter body 13 is sleeved on the filter body 12 to form a filter assembly, and then installed on the handle cover plate 10 and Between the end cover sealing plates 15, the filter body 12 has a hollow columnar structure. After the exhaust gas flows from the outer peripheral wall of the composite filter element 100 through the primary filter body 13 and the filter body 12, it is discharged from the central cavity.
  • the exhaust gas first passes through the outer wall of the initial removal filter body 13, and then passes through the hollow filter body 12 to enter the interior of the filter body 12. In this process, the exhaust gas is filtered and adsorbed, and finally passes through the air in the center of the filter body 12. After the cavity, it is discharged from the vent hole 152 of the end cover sealing plate 15.
  • the composite filter element 100 can perform adsorption pretreatment of particulate matter, oil droplets, moisture and other substances in the exhaust gas through the first membrane layer 132 of the preliminary filter 13
  • the second filter membrane layer 135 can adsorb high boiling point organics (or semi-volatile) and difficult-to-desorb macromolecular organics, and then filter and adsorb the exhaust gas through the filter body 12 to ensure the adsorption capacity and efficiency of the filter body 12.
  • the primary filter body 13 includes a first filter membrane layer 132 and a second filter membrane layer 135.
  • the second filter membrane layer 135 is sleeved on the outer surface of the filter body 12, and the first filter membrane layer 132 sets Set on the outer surface of the second membrane layer 135.
  • the second filter membrane layer 135 includes at least one of activated carbon non-woven fabric, granular activated carbon, activated carbon fiber rolls, activated carbon fiber felt, and filter cotton, and is mainly configured to adsorb macromolecular volatile organic compounds in the exhaust gas.
  • the second filter membrane layer 135 can be made of only one material, for example, only one of activated carbon non-woven fabric, granular activated carbon, activated carbon fiber roll, activated carbon fiber felt, and filter cotton can be used.
  • two materials may be used, for example, any two materials of activated carbon non-woven fabric, granular activated carbon, activated carbon fiber roll, activated carbon fiber felt and filter cotton can be used in combination.
  • any three materials of activated carbon non-woven fabric, granular activated carbon, activated carbon fiber roll, activated carbon fiber felt and filter cotton can be used in combination, or four materials can be used in combination, or all of them can be used.
  • the first filter membrane layer 132 includes at least one of a composite water-absorbing fiber, an electret polypropylene fiber filter layer, a spray-melted polypropylene oil-absorbing fiber, a spray-melted polypropylene fiber and a primary filter fiber, wherein the primary filter fiber includes activated carbon without At least one of woven fabric, activated carbon fiber felt, and filter cloth.
  • the activated carbon non-woven fabric is primary or medium-efficiency, and the primary-effect filter fiber can be composed of a single layer or multiple layers. It is mainly configured to intercept particulate matter, oil droplets, moisture or difficult-to-desorb macromolecular organic matter in the exhaust gas.
  • the first membrane layer 132 and the second membrane layer 135 are for one-time use, and can be removed after a period of time to reach the adsorption conditions Discarded, and can be replaced with a new membrane layer.
  • the first filter membrane layer 132 can be made of only one material.
  • the first filter membrane layer 132 can only use composite water-absorbing fibers, electret polypropylene fiber filter layers, spray-melted polypropylene oil-absorbing fibers, spray It is a material of melted polypropylene fiber and primary filter fiber.
  • two materials can be used, for example, a combination of two materials among composite water-absorbing fiber, electret polypropylene fiber filter layer, spray-melted polypropylene oil-absorbing fiber, spray-melted polypropylene fiber and primary filter fiber.
  • three materials of composite water-absorbing fiber, electret polypropylene fiber filter layer, spray-melted polypropylene oil-absorbing fiber, spray-melted polypropylene fiber and primary filter fiber can also be used in combination, or four, or All are adopted.
  • the primary filter fiber can be one of activated carbon non-woven fabric, activated carbon fiber felt and filter cloth, or a combination of two of them, or both.
  • the material of the first filter membrane layer 132 when the material of the first filter membrane layer 132 is selected as the polypropylene fiber filter layer, the material can be electret polypropylene fiber or spray-melted polypropylene fiber.
  • the original sprayed polypropylene fiber filter layer can be replaced with an electret polypropylene fiber filter layer.
  • the thickness of the polypropylene absorbent filter layer should be adjusted according to the concentration of particulate matter in the exhaust gas (the thickness of the polypropylene fiber filter layer is closely related to the filtration pressure drop and filtration capacity. The purpose of adjusting the thickness is to reduce the pressure drop and increase the capacity of the filtration and adsorption of particulate matter) .
  • the concentration of particulate matter at the air inlet is lower than 5.0mg/m 3
  • the thickness of the polypropylene fiber is not greater than 4mm, otherwise the particulate matter in the exhaust gas should be pretreated first.
  • the first filter layer 132 has a circular folded structure
  • the second filter layer 135 also has a circular folded structure. That is, the first filter membrane layer 132 and the second filter membrane layer 135 are folded to form a substantially circular structure, and the overall appearance of the outer wall is uneven, which can increase the filtering area and increase the capacity of filtering and adsorbing particles.
  • only one of the first filter membrane layer 132 and the second filter membrane layer 135 may have a circular folded structure.
  • the first filter layer 132 may also have a circular structure
  • the second filter layer 135 may also have a circular structure.
  • the filter body 12 includes an outer mesh 121, an adsorption filter layer 123, an inner mesh 125, and a reinforcing rod 126.
  • the inner mesh 125 is disposed on the inner surface of the adsorption filter layer 123
  • the outer mesh 121 is disposed on the outer surface of the adsorption filter layer 123.
  • the protection of the adsorption filter layer 123 is achieved through the outer net 121 and the inner net 125.
  • the adsorption filter layer 123 includes an activated carbon filter layer or a molecular sieve filter layer, wherein the activated carbon filter layer includes at least one of granular activated carbon, honeycomb activated carbon, hollow cylindrical activated carbon, and activated carbon fiber filter cotton; the molecular sieve filter layer includes granular At least one of molecular sieve, honeycomb molecular sieve, and hollow cylindrical molecular sieve.
  • the material of the activated carbon filter layer can be only one type, for example, only one of granular activated carbon, honeycomb activated carbon, hollow cylindrical activated carbon and activated carbon fiber filter cotton, or any two of these types. The combination of, or any combination of three, or, all are used.
  • the material of the molecular sieve filter layer can also be only one kind, for example, only one of granular molecular sieve, honeycomb molecular sieve and hollow cylindrical molecular sieve, or a combination of any two of these, or both are selected.
  • the inner mesh 125 and the outer mesh 121 adopt round mesh or diamond mesh, and are made of galvanized steel or stainless steel to improve the compressive strength and prevent damage and deformation of the composite filter element 100 during use, replacement and regeneration.
  • a reinforcing rod 126 is provided in the middle of the adsorption filter layer 123. Since the adsorption filter layer 123 is a hollow columnar structure, the number of reinforcement rods 126 is multiple, along the circumferential direction of the adsorption filter layer 123. It is arranged in the middle of the adsorption filter layer 123 at even intervals. It should be noted that the reinforcing rod 126 is optional in other embodiments. For example, when the weight of the filter body 12 is lighter and the strength of the filter body 12 is higher, the reinforcing rod 126 may not be included to reduce the cost. .
  • the handle cover 10 is located at the front end of the filter body 12 (the left end in FIG. 1), the handle cover 10 is connected to the filter body 12 through the handle end sealing seat 102, and the end cover sealing plate 15 is located at the rear end of the filter body 12 (the right end in FIG. ), the end cover sealing plate 15 is an exhaust end sealing seat, the exhaust end sealing seat is arranged opposite to the handle end sealing seat 102, and the exhaust end sealing seat is provided with an exhaust hole 152, thereby forming a relatively complete structure.
  • the preliminary removal filter body 13 is sleeved on the filter body 12 to form a filter assembly, and the handle cover plate 10 and the end cover seal plate 15 arranged opposite to each other are installed at both ends of the filter assembly, that is, the handle cover plate 10 is located at the filter assembly.
  • One end of the main body 12 and the preliminary removal filter body 13, and the end cover sealing plate 15 is located at the other end of the main body 12 and the preliminary removal filter body 13.
  • the handle cover plate 10 and the end cover sealing plate 15 are both sealed structures.
  • the composite filter element 100 is installed in the box body 20 (shown in Figure 4) to form a volatile organic compound purification device 200 (shown in Figure 4), it can be combined with The joint of the box body 20 achieves a sealing effect.
  • the handle cover plate 10 and the end cover sealing plate 15 are made of high temperature resistant materials such as galvanized steel plate, stainless steel or aluminum alloy, and the handle cover plate 10 can be made of engineering plastics. to make.
  • the handle cover plate 10 and the end cover sealing plate 15 are sealed with high-quality fluorine rubber parts 16, which have good sealing performance.
  • a sealing groove is provided at the joint of the handle cover plate 10 and the joint of the end cover sealing plate 15, and a high-quality fluororubber piece 16 is selected to be sleeved in the sealing groove.
  • the high-quality fluorine rubber The rubber piece 16 achieves a sealing effect. That is, the handle cover plate 10 and the box body 20 are sealed by the rubber member 16, and the end cover sealing plate 15 and the box body 20 are sealed by the rubber member 16.
  • seal can also adopt seals of other materials and structures, as long as the sealing effect can be achieved, and the specific seals are not limited.
  • the thickness of the adsorption filter layer 123 of the filter body 12 in the composite filter element 100 is designed according to the VOCs concentration and allowable filtration pressure drop.
  • the length of the filter body 12 is generally not more than 1200mm, and the diameter is generally not more than 500mm.
  • the size of the composite filter element 100 can be determined according to actual requirements, which is not limited in this embodiment.
  • the handle cover plate 10 is equipped with a quick-release disk cover, which realizes the technical effects of quick installation and easy removal.
  • the replacement can be completed in a few seconds and can be completed without the aid of tools.
  • the composite filter element 100 is provided with a primary removal filter body 13 and a filter body 12 to make the filter body 12 easy to regenerate.
  • the composite filter element 100 provided by this embodiment has high filtration efficiency, low filtration resistance, and good regeneration effect.
  • the filter body 12 is not easy to be damaged, and the filter body 13 is removed to make the filter body 12 Easier to regenerate, reducing production costs.
  • the composite filter element 100 provided in this embodiment has the advantages of wide application range, high adsorption capacity, simple replacement operation, low treatment cost, impact load resistance, multiple regeneration and low treatment cost, etc.
  • the composite filter element 100 after use has the advantages of
  • the filter body 13 can be directly used as waste for disposal.
  • the internal filter body 12 is desorbed by hot air (150°C) and can be recycled, reducing production costs and saving a large amount of wood or coal resources for the manufacture of activated carbon .
  • this embodiment also provides a second composite filter element 100.
  • the structure of the second composite filter element 100 and the first composite filter element 100 are basically the same, and the differences are specifically described as follows:
  • FIG. 3 is a cross-sectional view of the second composite filter element 100 provided by this embodiment. As shown in FIG. 3, the handle cover plate 10 and the end cover sealing plate 15 are structurally improved.
  • the handle cover 10 includes an operating handle 103, an exhaust end sealing seat 104, and an oil-resistant gasket 105.
  • the exhaust end sealing seat 104 is sealed at the front end (the left end in FIG. 3) of the filter body 12, and can be matched with the filter element mounting hole 225 (shown in FIG. 4) of the volatile organic compound purification device 200 (shown in FIG. 4),
  • the oil-resistant gasket 105 is arranged on the inner side of the exhaust end sealing seat 104, and the sealing effect is achieved by the oil-resistant gasket 105.
  • the operating handle 103 is arranged on the outside of the exhaust end sealing seat 104 to facilitate the operator to perform installation and replacement operations from the outside.
  • the end cover sealing plate 15 and the exhaust end sealing seat 104 are opposed to each other, and are arranged at the rear end of the filter body 12 (the right end in FIG. 3).
  • the end cover sealing plate 15 is provided with a test port 156 to make the The exhaust gas from the composite filter element 100 enters the primary filter body 13 and the filter body 12 sequentially from the circumference of the composite filter element 100, and is filtered and discharged from the test port 156 of the end cover sealing plate 15.
  • an embodiment of the present disclosure provides a first volatile organic compound purification device 200, which includes a cabinet 20 and at least one of the first composite filter element 100 or the second composite filter element 100 provided above.
  • FIG. 4 is a schematic diagram of the volatile organic compound purification device 200
  • FIG. 5 is a cross-sectional view of FIG. 4. Please refer to FIG. 4 and FIG. 5. The specific description is as follows:
  • the box body 20 includes an air inlet 21, a filter cavity 201, and an air outlet 24 that are connected in sequence.
  • the composite filter element 100 is installed on the box body 20 and extends into the filter cavity 201 so that the gas to be purified enters from the air inlet 21 and flows After passing through the composite filter element 100, it is discharged from the air outlet 24.
  • the filter cavity 201 includes a first cavity 22 and a second cavity 23 that are connected.
  • the inlet of the first cavity 22 is in communication with the air inlet 21, and the outlet of the second cavity 23 is connected to the air outlet 24.
  • the box body 20 is provided with a plurality of filter element mounting holes 225 corresponding to the first cavity 22 along the exhaust gas flow direction.
  • the filter element mounting holes 225 correspond to the composite filter element 100 one by one, and the composite filter element 100 is mounted on the filter element mounting holes one to one.
  • the gas to be purified enters from the air inlet 21, is filtered by the composite filter element 100, then flows through the second cavity 23, and is finally discharged from the air outlet 24.
  • a filter element guide rail 227 is provided under the filter element mounting hole 225 opened on the box body 20, a sealing base is provided at the bottom of the filter element mounting hole 225, and the composite filter element 100 is installed in the filter element mounting hole 225 through the filter element guide rail 227.
  • the composite filter element 100 includes a handle cover plate 10 and an end cover sealing plate 15 opposite to each other.
  • the handle cover plate 10 is a closed end, and the end cover sealing plate 15 is provided with a first vent 151 (as shown in FIG. 1
  • the exhaust hole 152 has the same function).
  • the handle cover 10 is sealed with the box body 20.
  • the gas to be purified enters from the air inlet 21 of the box body 20 and passes through the composite filter element 100. It flows into the second cavity 23 from the first vent hole 151 and finally exhausts from the air outlet 24.
  • the handle cover 10 and the box body 20 are sealed by a rubber 16.
  • FIG. 6 shows a second volatile organic compound purification device 200 provided by an embodiment of the present disclosure. Please refer to FIG. 6.
  • the composite filter element 100 includes a handle cover plate 10 and an end cover sealing plate 15 arranged oppositely.
  • the composite filter element 100 needs to be fully embedded in the filter cavity 201, and the filter cavity 201 of the box body 20 is sealed by the end cover sealing plate 15.
  • the handle cover 10 is provided with a second vent 101 (the same function as the vent 152 in FIG. 1), and the end cover sealing plate 15 and the box body 20 are sealed and arranged.
  • the composite filter element 100 is installed in the box body 20, wait The purified gas enters from the air inlet 21 of the box body 20, passes through the composite filter element 100, flows into the second cavity 23 from the second air hole 101 at the end of the handle cover 10, and finally exits from the air outlet 24.
  • the end cover sealing plate 15 and the box body 20 are sealed by a rubber member 16.
  • the operator holds the handle cover plate 10 of the composite filter element 100, inserts the end cover sealing plate 15 into the filter element mounting hole 225, and pushes it into the filter cavity 201 along the filter element guide rail 227, and aligns the exhaust end sealing seat 104 with the sealing base , Rotate the quick-release disc cover of the handle cover 10 to make it rotate clockwise or counterclockwise to a certain angle to achieve sealing with the sealing base.
  • the rotating quick-release disc cover rotates clockwise by 30° to 90° to achieve sealing with the sealing base.
  • At least one one-way pressure relief valve 28 is installed in at least one filter element mounting hole 225, and the pressure relief direction of the one-way pressure relief valve 28 is from the first cavity 22 to the second cavity The unidirectional pressure relief direction of the body 23.
  • one of the multiple filter element mounting holes 225 can be selected to install the one-way pressure relief valve 28, or two or three can be selected.
  • the number of the one-way pressure relief valve 28 is also not limited, and it may be one, two or three.
  • the one-way pressure relief valve 28 may be a gravity, spring or magnetic pressure relief valve.
  • the one-way pressure relief valve 28 automatically or in the controller 26 (shown in Figure 7 It can be turned on under the control of output) to realize emergency emission of exhaust gas and improve the safety of the device.
  • the first volatile organic compound purification device 200 provided in this embodiment belongs to a single-side VOC S purification structure in exhaust gas, and is composed of a composite filter element 100 and a box body 20. It can be understood that, referring to FIG. 7, the purification device also includes a sensor 25 , Flow meter, controller 26 and alarm device 27.
  • Both the sensor 25 and the alarm device 27 communicate with the controller 26.
  • the sensor 25 is arranged in the filter cavity 201 of the box body 20 and is located at the air outlet end of the composite filter element 100, and is configured to output a signal representing the pressure drop in the filter cavity 201.
  • the controller 26 is configured to control the state of the alarm device 27 or the one-way pressure relief valve 28 according to the signal output by the sensor 25.
  • the sensor 25 is a differential pressure sensor, configured to detect the pressure drop of the gas passing through the composite filter element 100. If the pressure drop is too low or too high, an alarm is required.
  • the indicated value of the differential pressure sensor exceeds the specified limit , It will trigger an alarm for abnormal operation status; when the indicated value of the differential pressure sensor exceeds the specified upper limit, it means that the filter element is saturated and the filter element needs to be replaced; when the indicated value of the differential pressure sensor is lower than the specified lower limit, it means two chambers Air leakage between the body or the filter element reduces the purification efficiency.
  • the flow meter is an exhaust flow meter, which is configured to measure the flow of gas.
  • the working principle of the activated carbon adsorption purification device in the related technology is: the exhaust gas is powered by the fan, and the negative pressure enters the adsorption box and then enters the activated carbon adsorption layer.
  • the adsorption capacity of the activated carbon adsorbent surface is used to make the exhaust gas and the porous activated carbon adsorbent on the large surface In contact, the pollutants in the exhaust gas are adsorbed on the surface of the activated carbon to separate it from the gas mixture, and the purified gas is discharged at high altitude.
  • the volatile organic compound purification device 200 provided in this embodiment has a reasonable design and a compact structure. It realizes the integrated purification of air and exhaust gas filtration and VOCs adsorption.
  • the equipment is small in size, has a large purification surface area, is easy to install, replace and maintain, and has high surface activity. High adsorption capacity.
  • the problems of traditional fixed-bed activated carbon device such as small adsorption area, large bed resistance, difficult filter replacement operation, activated carbon and other adsorption materials are easily polluted by high-boiling organics, low regeneration activation efficiency, and high disposable cost.
  • FIG. 8 shows a third volatile organic compound purification device 200 provided by an embodiment of the present disclosure.
  • the third volatile organic compound purification device 200 and the first volatile organic compound purification device 200 have basically the same structure. , The difference is explained as follows:
  • FIG. 8 is a cross-sectional view of a third type of volatile organic compound purification device 200, please refer to FIG. 8.
  • the box body 20 includes an air inlet 21, a filter cavity 201, and an air outlet 24 that are connected in sequence.
  • the filter cavity 201 includes a first filter cavity 224, a second filter cavity 226, and a gas circulation cavity 228.
  • the first filter cavity 224 and the second filter cavity 226 are located on both sides of the gas circulation cavity 228, and the first filter cavity 224 and the second filter cavity 226 are respectively communicated with the gas circulation cavity 228, the inlet of the first filter cavity 224 and the second
  • the inlet of the filter cavity 226 is in communication with the air inlet 21, the outlet of the first filter cavity 224 and the outlet of the second filter cavity 226 are both in communication with the inlet of the gas circulation cavity 228, and the outlet of the gas circulation cavity 228 and the gas outlet 24 connected.
  • the box body 20 is provided with a plurality of filter element mounting holes 225 along the gas flow direction.
  • the filter element mounting holes 225 can respectively correspond to the first filter cavity 224 and the second filter cavity 226, and the number of composite filter elements 100 is The total number of the filter element installation holes 225 is the same, and the composite filter element 100 is installed in the filter element installation holes 225 one by one. So that the gas to be purified enters the box body 20 from the air inlet 21, and after being purified by the composite filter element 100 in the box body 20, it is discharged from the hole of the end cover sealing plate 15 of the composite filter element 100, collected by the gas circulation cavity 228, and exited The air port 24 is discharged.
  • a filter element guide rail 227 is provided under the filter element installation hole 225, and the composite filter element 100 is installed in the filter element installation hole 225 through the filter element guide rail 227.
  • the third volatile organic compound purification device 200 provided in this embodiment has a double-sided purification structure, which improves the problems of small adsorption area, large bed resistance, and high cost of the purification device in the related art, and mainly realizes the filtration of air and exhaust gas. , And the integrated purification of VOCs adsorption, suitable for the purification treatment of large air volume and low concentration VOCs, compact structure, automatic operation, high purification efficiency, recyclable filter body 12, low secondary pollution, low cost, and good economic benefits.
  • the composite filter element 100 shown in FIG. 1 includes a handle cover 10, a hand-end sealing seat 102, a filter body 12, a preliminary filter body 13, an end cover 15 and a rubber member 16.
  • the filter body 12 includes an outer mesh 121, an adsorption filter layer 123, an inner mesh 125, and a reinforcing rod 126.
  • the inner mesh 125 is disposed on the inner surface of the adsorption filter layer 123
  • the outer mesh 121 is disposed on the outer surface of the adsorption filter layer 123
  • the reinforcing rod 126 Set in the middle of the adsorption filter layer 123.
  • the primary filter body 13 includes a first filter membrane layer 132 and a second filter membrane layer 135.
  • the second filter membrane layer 135 is sleeved on the outer surface of the outer mesh 121, and the first filter membrane layer 132 is sleeved on the second filter membrane layer.
  • the primary removal filter body 13 is sleeved on the outer surface of the filter body 12 to form a filter assembly.
  • the handle cover plate 10 is installed at one end of the filter assembly through the hand-end sealing seat 102, and the end cap seal 15 is installed at the other end of the filter assembly.
  • the outer wall of the hand-end sealing seat 102 is provided with a sealing groove to accommodate the rubber member 16.
  • the outer wall of the seal 15 is also provided with a sealing groove to accommodate the rubber 16.
  • the first filter membrane layer 132 and the second filter membrane layer 135 of the composite filter element 100 shown in Figure 2 are both circular folded structures, and the end cover sealing plate 15 at one end of the composite filter element 100 is provided with an exhaust hole 152 .
  • the composite filter element 100 shown in Figure 3 includes a handle cover 10, a filter body 12, a primary filter body 13 and an end cap seal 15.
  • the primary filter body 13 is sleeved on the outer surface of the filter body 12 to form Filter components.
  • the handle cover 10 includes an operating handle 103, an exhaust end sealing seat 104, and an oil-resistant gasket 105.
  • the exhaust end sealing seat 104 is sealed at one end of the filter assembly, the oil-resistant gasket 105 is arranged on one side of the exhaust end sealing seat 104 to seal the connection between the exhaust end sealing seat 104 and the filter assembly, and the operating handle 103 is arranged on the exhaust The air end seals the other side of the seat 104.
  • the end cover sealing plate 15 is installed at the other end of the filter assembly, and the end cover sealing plate 15 is provided with a test port 156.
  • the volatile organic compound purification device 200 shown in FIG. 4 includes a box 20 and a sensor 25.
  • the box body 20 is provided with a communicating air inlet 21 and an air outlet 24.
  • the box body 20 is provided with a filter element mounting hole 225 and a filter element guide rail 227.
  • the composite filter element 100 is installed in the filter element mounting hole 225 through the filter element guide 227.
  • the sensor 25 is installed in the box 20 and is configured to detect the pressure drop difference in the box 20.
  • the volatile organic compound purification device 200 shown in FIG. 5 includes a box body 20 and a composite filter element 100.
  • the box body 20 includes an air inlet 21, a first cavity 22, a second cavity 23, and an outlet that are connected in sequence.
  • a plurality of composite filter elements 100 are sequentially arranged at intervals, and one end of the composite filter element 100 has a handle cover plate 10 located outside the first cavity 22, and the handle cover plate 10 is sealed to the box body 20.
  • the rest of the composite filter element 100 is located Inside the first cavity 22.
  • the other end of the composite filter element 100 has an end cover sealing plate 15 which is located at the junction of the first cavity 22 and the second cavity 23, and the end cover sealing plate 15 is provided with a first vent hole 151, configured Therefore, the filtered gas in the first cavity 22 is input into the second cavity 23.
  • the first cavity 22 and the second cavity 23 constitute the filter cavity 201, and a one-way pressure relief valve 28 is installed at the junction of the first cavity 22 and the second cavity 23, and the one-way pressure relief direction is the first A direction from a cavity 22 to a second cavity 23.
  • the volatile organic compound purification device 200 shown in FIG. 6 includes a box body 20 and a composite filter element 100.
  • the box body 20 includes an air inlet 21, a first cavity 22, a second cavity 23, and an outlet that are sequentially arranged.
  • the air port 24 and a plurality of composite filter elements 100 are sequentially arranged at intervals.
  • One end of the composite filter element 100 has an end cover sealing plate 15 hermetically connected with the box body 20, the other end of the composite filter element 100 has a handle cover plate 10 located in the second cavity 23, and the rest of the composite filter element 100 is located in the first cavity Within 22.
  • the handle cover 10 is located at the junction of the first cavity 22 and the second cavity 23, and the handle cover 10 is provided with a second vent 101 configured to input the filtered gas in the first cavity 22 into the second cavity Within 23.
  • the first cavity 22 and the second cavity 23 constitute the filter cavity 201, and a one-way pressure relief valve 28 is installed at the junction of the first cavity 22 and the second cavity 23, and the one-way pressure relief direction is the first A direction from a cavity 22 to a second cavity 23.
  • Figure 7 shows that the sensor 25 communicates with the controller 26, the controller 26 communicates with the alarm device 27, the sensor 25 is configured to output a signal representing the pressure drop in the filter cavity 201, and the controller 26 is configured according to the sensor The signal output by 25 controls the state of the alarm device 27.
  • the volatile organic compound purification device 200 shown in FIG. 8 includes a box body 20 and a composite filter element 100.
  • the box body 20 includes two airflow paths, one of which includes an air inlet 21 and a first filter cavity arranged in sequence 224, the gas circulation cavity 228 and the gas outlet 24, the other one includes the gas inlet 21, the second filter cavity 226, the gas circulation cavity 228 and the gas outlet 24 arranged in sequence.
  • the first filter cavity 224, the second filter cavity 226 and the gas circulation cavity 228 constitute the filter cavity 201.
  • the box body 20 is provided with a plurality of filter element mounting holes 225 to install a plurality of composite filter elements 100 in a one-to-one correspondence.
  • Each filter element mounting hole 225 corresponds to a filter element guide 227, and the composite filter element 100 is installed in the filter element mounting hole 225 through the filter element guide 227.
  • the multiple composite filter elements 100 include two rows of composite filter elements 100. One row of composite filter elements 100 are sequentially spaced apart, and most of the composite filter elements 100 are located in the first filter cavity 224.
  • the end cover sealing plate 15 of the composite filter element 100 is located At the connection between the first filter cavity 224 and the gas circulation cavity 228, the end cover sealing plate 15 is provided with a first vent hole 151 configured to input the gas filtered in the first filter cavity 224 into the gas circulation cavity 228.
  • Another row of composite filter elements 100 are arranged at intervals in sequence, and most of the composite filter elements 100 are located in the second filter cavity 226.
  • the end cover sealing plate 15 of the composite filter element 100 is located between the second filter cavity 226 and the gas circulation cavity 228. At the connection, the end cover sealing plate 15 is provided with a first vent hole 151 configured to input the gas filtered in the second filter cavity 226 into the gas circulation cavity 228.
  • the present disclosure provides a composite filter element and a volatile organic compound purification device, which can achieve the filtration of air and exhaust gas and the integrated purification of VOCs adsorption, with high overall purification efficiency and low use cost.

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Abstract

一种复合滤芯（100）及挥发性有机物净化装置（200），复合滤芯（100）包括把手盖板（10）、过滤本体（12）、初除过滤体（13）以及端盖封板（15），过滤本体（12）为空心柱状结构，初除过滤体（13）包括第一滤膜层（132）和第二滤膜层（135），第二滤膜层（135）套设于过滤本体（12）的外表面，第一滤膜层（132）套设于第二滤膜层（135）的外表面。

Description

一种复合滤芯及挥发性有机物净化装置
相关申请的交叉引用
本公开要求于2019年04月29日提交中国专利局的申请号为201910355691.X、名称为“一种复合滤芯及挥发性有机物净化装置”的中国专利申请的优先权；以及于2019年04月29日提交中国专利局的申请号为201920613868.7、名称为“一种复合滤芯及挥发性有机物净化装置”的中国专利申请的优先权，其全部内容通过引用结合在本公开中。
技术领域
本公开涉及废气净化技术领域，具体而言，涉及一种复合滤芯及挥发性有机物净化装置。
背景技术
挥发性有机物(简称VOCs)的物理学定义是指在101.325kPa下，任何初沸点低于或等于250℃的有机化合物。
但是，发明人研究发现，相关技术中，配置成吸附净化挥发性有机物的吸附净化装置存在易受杂质污染、吸附净化效果较差、且使用成本高的技术问题。
发明内容
本公开的目的包括，例如，提供一种复合滤芯以及挥发性有机物净化装置，能够增大单位体积吸附装置的吸附床层面积，降低气体过滤压降，从而达到过滤净化效率高的效果，并且，整体使用成本较低。
本公开的实施例可以这样实现：
本公开的实施例提供了一种复合滤芯，其包括初除过滤体和过滤本体，所述过滤本体为空心柱状结构，所述初除过滤体包括第一滤膜层和第二滤膜层，所述第二滤膜层套设于所述过滤本体的外表面，所述第一滤膜层套设于所述第二滤膜层的外表面。
可选的，所述第一滤膜层包括复合吸水纤维、驻极体聚丙烯纤维滤层、喷融聚丙烯吸油纤维、喷融聚丙烯纤维和初效过滤纤维中的至少一个。
可选的，所述第二滤膜层包括活性炭无纺布、颗粒活性炭、活性炭纤维卷、活性炭纤维毡和过滤棉中的至少一个。
可选的，所述第一滤膜层为圆形或圆形折叠结构，和/或，所述第二滤膜层为圆形或圆形折叠结构。
可选的，所述过滤本体包括外侧网、吸附滤层以及内侧网，所述内侧网设置于所述吸附滤层的内表面，所述外侧网设置于所述吸附滤层的外表面。
可选的，所述过滤本体还包括加强杆，所述加强杆设置于所述吸附滤层的中间。
可选的，所述过滤本体的吸附滤层包括活性炭滤层或分子筛滤层；
其中，所述活性炭滤层包括颗粒状活性炭、蜂窝状活性炭、空心柱状活性炭和活性炭纤维过滤棉中的至少一个；
所述分子筛滤层包括颗粒状分子筛、蜂窝状分子筛和空心柱状分子筛中的至少一个。
可选的，所述复合滤芯还包括相对设置的把手盖板和端盖封板，所述把手盖板位于所述过滤本体和所述初除过滤体的一端，所述端盖封板位于所述过滤本体和所述初除过滤体的另一端。
本公开的实施例还提供了一种挥发性有机物净化装置，其包括上述的复合滤芯。
可选的，所述净化装置还包括箱体，所述箱体包括依次连通的进气口、过滤腔以及出气口，所述复合滤芯安装于所述箱体且伸入所述过滤腔内，以使待净化气体从所述进气口进入，流经所述复合滤芯后从所述出气口排出。
可选的，所述过滤腔包括连通的第一腔体和第二腔体，所述第一腔体的进口与所述进气口连通，所述第二腔体的出口与所述出气口连通；
所述箱体开设有多个与所述第一腔体相对应的滤芯安装孔，所述复合滤芯一一对应地安装于所述滤芯安装孔中，以使待净化气体从所述进气口进入，经过所述复合滤芯后流经所述第二腔体，从所述出气口排出。
可选的，所述滤芯安装孔下方设置有滤芯导轨，所述复合滤芯通过所述滤芯导轨安装于所述滤芯安装孔。
可选的，所述复合滤芯包括相对设置的把手盖板和端盖封板，所述复合滤芯嵌入所述过滤腔；
所述把手盖板与所述箱体密封设置，所述端盖封板开设有第一通气孔，或者，所述把手盖板开设有第二通气孔，所述端盖封板与所述箱体密封设置，以使待净化气体经过所述复合滤芯后通过所述第一通气孔或所述第二通气孔流入所述第二腔体。
可选的，所述把手盖板与所述箱体通过橡胶件密封，所述端盖封板与所述箱体通过橡胶件密封。
可选的，至少一个所述滤芯安装孔中安装有至少一个单向泄压阀，所述单向泄压阀的泄压方向为所述第一腔体向所述第二腔体的单向泄压方向。
可选的，所述过滤腔包括第一过滤空腔、第二过滤空腔以及气体流通腔，所述第一过滤空腔和所述第二过滤空腔位于所述气体流通腔的两侧，且分别与所述气体流通腔连通，所述第一过滤空腔的进口和所述第二过滤空腔的进口均与所述进气口连通，所述第一过滤空腔的出口和所述第二过滤空腔的出口均与所述气体流通腔的进口连通，所述气体流通腔的出口与所述出气口连通；
所述箱体开设有多个滤芯安装孔，所述滤芯安装孔能够分别与所述第一过滤空腔和所述第二过滤空腔相对应，所述复合滤芯一一对应地安装于所述滤芯安装孔，以使待净化气体从所述进气口进入，经过所述复合滤芯后流经所述气体流通腔，从所述出气口排出。
可选的，所述滤芯安装孔下方设置有滤芯导轨，所述复合滤芯通过所述滤芯导轨安装 于所述滤芯安装孔。
可选的，所述净化装置还包括控制器、传感器以及报警装置；
所述传感器和所述报警装置均与所述控制器通信，所述传感器设置于所述过滤腔内且位于所述复合滤芯的出气端，配置成输出表征所述过滤腔内压降差的信号，所述控制器配置成根据所述传感器输出的信号控制所述报警装置或所述单向泄压阀的状态。
本公开实施例的有益效果包括，例如：
复合滤芯及挥发性有机物净化装置可以实现对空气和废气的过滤、以及VOCs吸附一体化的净化，其结构紧凑、自动化运行、净化效率高、过滤本体可循环利用、二次污染小、成本低、经济效益好。
附图说明
为了更清楚地说明本公开实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，应当理解，以下附图仅示出了本公开的某些实施例，因此不应被看作是对范围的限定，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他相关的附图。
图1为本公开实施例提供的第一种复合滤芯的剖视图；
图2为本公开实施例提供的第一种复合滤芯的立体图；
图3为本公开实施例提供的第二种复合滤芯的剖视图；
图4为本公开实施例提供的第一种挥发性有机物净化装置的结构示意图；
图5为图4的剖视图；
图6为本公开实施例提供的第二种挥发性有机物净化装置的示意图；
图7为本公开实施例提供的控制器及其相关部件的示意图；
图8为本公开实施例提供的第三种挥发性有机物净化装置的剖视图。
图标：100-复合滤芯；10-把手盖板；101-第二通气孔；102-手端密封座；12-过滤本体；121-外侧网；123-吸附滤层；125-内侧网；126-加强杆；13-初除过滤体；132-第一滤膜层；135-第二滤膜层；15-端盖封板；151-第一通气孔；152-排气孔；16-橡胶件；103-操作把手；104-排气端密封座；105-耐油密封垫；156-测试口；200-挥发性有机物净化装置；20-箱体；201-过滤腔；21-进气口；22-第一腔体；23-第二腔体；24-出气口；225-滤芯安装孔；227-滤芯导轨；25-传感器；224-第一过滤空腔；226-第二过滤空腔；228-气体流通腔；26-控制器；27-报警装置；28-单向泄压阀。
具体实施方式
为使本公开实施例的目的、技术方案和优点更加清楚，下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本公开一部分实施例，而不是全部的实施例。
因此，以下对在附图中提供的本公开的实施例的详细描述并非旨在限制要求保护的本公开的范围，而是仅仅表示本公开的选定实施例。基于本公开中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步定义和解释。
在本公开的描述中，需要说明的是，术语“第一”、“第二”、“第三”等仅用于区分描述，而不能理解为指示或暗示相对重要性。
在本公开的描述中，还需要说明的是，除非另有明确的规定和限定，术语“设置”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本公开中的具体含义。
以下结合附图对本公开的实施例进行详细说明，但是本公开可以由权利要求限定和覆 盖的多种不同方式实施。
VOCs的光化学定义是指参与大气光化学反应的有机化合物，或者根据规定的方法测量或核算确定的有机化合物。一般说来，VOCs包括非甲烷烃类(烷烃、烯烃、炔烃、芳香烃等)、含氧有机物(醛、酮、醇、醚等)、含氯有机物、含氮有机物、含硫有机物等，是形成臭氧(O 3)和细颗粒物(PM 2.5)污染的重要前体物。VOCs是除颗粒物外第二大分布广泛和种类复杂的大气污染物，对生态环境系统和人体健康的危害有主要三个方面：一是部分种类具有毒性和致癌，危害人体健康；二是与氮氧化物共同参与大气光化学反应，形成臭氧污染；三是经化学反应生成二次气溶胶，是造成细颗粒物(PM 2.5)的重要前提物。控制并降低各类污染源挥发性有机物(以下简称VOCs)的排放量，是降低大气臭氧和PM 2.5浓度水平，改善空气质量的重要途径。
相关技术中，VOCs吸附装置的工作原理是废气由风机提供动力，负压进入吸附箱后进入吸附层，利用活性炭或分子筛的微孔结构多、比表面积大、吸附能力强的特点，使废气与大表面的多孔性活性炭吸附剂相接触，废气中的污染物被吸附在活性炭或分子筛内表面上，使污染物与气体分离，净化后的气体高空排放，设计良好的装置净化效率可达90％以上。
但是，发明人研究发现，相关技术中，配置成吸附净化挥发性有机物的吸附净化装置存在单位体积内的可用吸附面积小的技术问题。同时研究还发现，相关技术中的VOCs吸附装置的平板式床层结构单一，其使用过程中操作、更换等相对比较困难。本实施例提供的一种复合滤芯及挥发性有机物净化装置可以有效地缓解该技术问题，具体地，以下将对复合滤芯及挥发性有机物净化装置的具体结构进行详细介绍。
请参考图1，图1为本实施例提供的第一种复合滤芯100的剖视图。该复合滤芯100包括把手盖板10、过滤本体12、初除过滤体13以及端盖封板15，初除过滤体13套设于过滤本体12上形成过滤组件，然后安装于把手盖板10和端盖封板15之间，其中，过滤本体12为空心柱状结构，废气从复合滤芯100的外周壁流经初除过滤体13和过滤本体12后，从中心的空腔排出。
可以理解的，废气先通过初除过滤体13的外壁，再通过空心的过滤本体12，进入过滤本体12的内部，在此过程中完成废气的过滤和吸附，最终通过过滤本体12的中心的空 腔后，从端盖封板15的排气孔152排出。
由于废气中含有挥发性有机物(VOCs)，本实施例提供的复合滤芯100通过初除过滤体13的第一滤膜层132可对废气中颗粒物、油滴、水分等物质进行吸附预处理，第二滤膜层135可对高沸点有机物(或半挥发性)、难脱附大分子有机物进行吸附，然后通过过滤本体12对废气进行过滤和吸附，保证过滤本体12的吸附能力和效率。
下面对该复合滤芯100的各个部件的具体结构和相互之间的对应关系进行详细说明。
请参照图1所示，初除过滤体13包括第一滤膜层132和第二滤膜层135，第二滤膜层135套设于过滤本体12的外表面，第一滤膜层132套设于第二滤膜层135的外表面。
其中，第二滤膜层135包括活性炭无纺布、颗粒活性炭、活性炭纤维卷、活性炭纤维毡和过滤棉中的至少一个，其主要配置成吸附废气中大分子的挥发性有机物。需要说明的是，第二滤膜层135可以仅采用一种材质，例如，仅采用活性炭无纺布、颗粒活性炭、活性炭纤维卷、活性炭纤维毡和过滤棉中的一种材质。或者，可以采用两种材质，例如，采用活性炭无纺布、颗粒活性炭、活性炭纤维卷、活性炭纤维毡和过滤棉中的任意的两种材质进行组合使用。同理，也可以采用活性炭无纺布、颗粒活性炭、活性炭纤维卷、活性炭纤维毡和过滤棉中的任意三种材质进行组合使用，或者四种材质进行组合使用，或者都采用。
第一滤膜层132包括复合吸水纤维、驻极体聚丙烯纤维滤层、喷融聚丙烯吸油纤维、喷融聚丙烯纤维和初效过滤纤维中的至少一个，其中初效过滤纤维包括活性炭无纺布、活性炭纤维毡和滤布的至少一个，活性炭无纺布为初效或中效，初效过滤纤维可以由单层或者多层复合而成。其主要配置成拦截废气中颗粒物、油滴、水分或难脱附大分子有机物，该第一滤膜层132和第二滤膜层135为一次性使用，当使用一段时间达到吸附条件后可拆除废弃，同时可以更换新的滤膜层。
需要说明的是，第一滤膜层132可以仅采用一种材质，例如，第一滤膜层132可以仅采用复合吸水纤维、驻极体聚丙烯纤维滤层、喷融聚丙烯吸油纤维、喷融聚丙烯纤维和初效过滤纤维中的一种材质。或者，可以采用两种材质，例如，采用复合吸水纤维、驻极体聚丙烯纤维滤层、喷融聚丙烯吸油纤维、喷融聚丙烯纤维和初效过滤纤维中的两种材质进行组合使用。同理，也可以采用复合吸水纤维、驻极体聚丙烯纤维滤层、喷融聚丙烯吸油 纤维、喷融聚丙烯纤维和初效过滤纤维中的三种材质进行组合使用，或者四种，或者全部都采用。
同理，初效过滤纤维可以采用活性炭无纺布、活性炭纤维毡和滤布中的一种，或者，采用其中两种的组合，或者都采用。
可以理解的，当第一滤膜层132的材质选用聚丙烯纤维滤层时，其材料可以为驻极体聚丙烯纤维或喷融聚丙烯纤维。
上述中，为提高喷融聚丙烯纤维的过滤净化效果，可将其经过静电荷电处理后，将原来的喷融聚丙烯纤维滤层更换为驻极体聚丙烯纤维滤层。聚丙烯吸维滤层的厚度应根据废气中颗粒物的浓度进行调节(聚丙烯纤维滤层的厚度与过滤压降、过滤容量密切相关，调节厚度的目的是降低压降，增加过滤吸附颗粒物容量)。当进气口颗粒物浓度低于5.0mg/m 3时，聚丙烯纤维厚度不大于4mm，否则应首先对废气中颗粒物进行预处理。
请参考图2，本实施例中，第一滤膜层132为圆形折叠结构，第二滤膜层135也为圆形折叠结构。即，第一滤膜层132和第二滤膜层135通过折叠形成大致圆形的结构，其整体看起来外壁凹凸不平，这样可以增加过滤面积，增加过滤吸附颗粒物容量。其它实施例中，第一滤膜层132和第二滤膜层135中可以仅有一个为圆形折叠结构。其它实施例中，第一滤膜层132也可以为圆形结构，第二滤膜层135也可以为圆形结构。
结合图1，过滤本体12包括外侧网121、吸附滤层123、内侧网125以及加强杆126，内侧网125设置于吸附滤层123的内表面，外侧网121设置于吸附滤层123的外表面，通过外侧网121和内侧网125实现对吸附滤层123的保护。
可选的，吸附滤层123包括活性炭滤层或分子筛滤层，其中，活性炭滤层包括颗粒状活性炭、蜂窝状活性炭、空心柱状活性炭和活性炭纤维过滤棉中的至少一个；分子筛滤层包括颗粒状分子筛、蜂窝状分子筛和空心柱状分子筛中的至少一个。
可以理解的，活性炭滤层的材质可以仅为一种，例如，仅为颗粒状活性炭、蜂窝状活性炭、空心柱状活性炭和活性炭纤维过滤棉中的一种，也可以为这几种中任意两种的组合，或者，任意三种的组合，或者，都选用。分子筛滤层的材质也可以仅为一种，例如，仅为颗粒状分子筛、蜂窝状分子筛和空心柱状分子筛中的一种，或者，这几种中任意两种的组 合，或者，都选用。
可选的，内侧网125和外侧网121采用圆孔网或菱形网，材质为镀锌钢或不锈钢，提高抗压强度，防止复合滤芯100在使用、更换及再生状态下发生损坏、变形现象。
为了提高过滤本体12的强度，在吸附滤层123中间设置有加强杆126，由于吸附滤层123为空心柱状结构，因此，设置加强杆126的数量为多个，沿吸附滤层123的圆周方向均匀间隔设置于吸附滤层123的中间。需要说明的是，加强杆126在其它实施例中是可选的，例如，当过滤本体12的质量较轻，且过滤本体12的强度较高时，其可以不包括加强杆126，以降低成本。
把手盖板10位于过滤本体12的前端(图1中左端)，把手盖板10通过把手端密封座102与过滤本体12连接，端盖封板15位于过滤本体12的后端(图1中右端)，端盖封板15为排气端密封座，排气端密封座与把手端密封座102相对设置，且排气端密封座开设有排气孔152，从而形成一个相对完整的结构。
可以理解的，初除过滤体13套设于过滤本体12上形成过滤组件，相对设置的把手盖板10和端盖封板15分别安装在过滤组件的两端，即，把手盖板10位于过滤本体12和初除过滤体13的一端，端盖封板15位于过滤本体12和初除过滤体13的另一端。
其中，把手盖板10和端盖封板15均为密封结构，当该复合滤芯100安装于箱体20(图4示出)形成挥发性有机物净化装置200(图4示出)后，能够和箱体20的连接处实现密封效果，可选的，把手盖板10和端盖封板15均采用镀锌钢板、不锈钢或铝合金等耐高温材料制成，把手盖板10部分可由工程塑料制成。
可选的，结合图1，把手盖板10和端盖封板15处采用优质氟橡胶件16密封，其密封性能良好。具体的，在把手盖板10的连接处和端盖封板15的连接处均开设有密封槽，选取优质氟橡胶件16套设于密封槽，当其安装于箱体20后，通过优质氟橡胶件16实现密封效果。即，该把手盖板10与箱体20通过橡胶件16密封，端盖封板15与箱体20通过橡胶件16密封。
可以理解的是，此处的密封还可以采用其他材质和其他结构的密封件，只要能够实现密封效果即可，对具体的密封件并不做限制。
另外，该复合滤芯100中过滤本体12的吸附滤层123的厚度是根据VOCs浓度和允许过滤压降设计，过滤本体12的长度一般不超过1200mm，直径一般不大于500mm，当然，可以理解的是，复合滤芯100的尺寸可以根据实际需求而定，本实施例并不做限制。
本实施例中，在把手盖板10处配置有快拆盘盖，实现了快速安装、便于拆御的技术效果，可在几秒钟的时间内完成更换工作，而且无需工具辅助即可完成，复合滤芯100设置有初除过滤体13和过滤本体12，以使过滤本体12易于再生利用。
本实施例提供的复合滤芯100与传统的床层式活性炭过滤器相比，其具有过滤效率高，过滤阻力低，再生效果好，过滤本体12不易破损，且初除过滤体13使过滤本体12更易于再生，降低了生产成本。
本实施例提供的复合滤芯100具有适用范围广、吸附容量高、更换操作简单、治理成本低、可耐冲击负荷、可多次再生利用、治理成本低等优点，使用后的复合滤芯100，初除过滤体13可直接作为废物处理，一次性使用，内部的过滤本体12用热空气(150℃)脱附并能循环使用，降低生产成本，且能够节约大量用于制造活性炭的木材或煤炭资源。
请参考图3，本实施例还提供了第二种复合滤芯100，该第二种复合滤芯100和第一种复合滤芯100的结构基本相同，区别具体说明如下：
图3为本实施例提供的第二种复合滤芯100的剖视图，如图3所示，对把手盖板10和端盖封板15进行了结构上的改进。
具体的，把手盖板10包括操作把手103、排气端密封座104以及耐油密封垫105。
排气端密封座104封堵于过滤本体12的前端(图3中的左端)，且能够与挥发性有机物净化装置200(图4示出)的滤芯安装孔225(图4示出)配合，耐油密封垫105设置于排气端密封座104的内侧，通过耐油密封垫105实现密封效果，操作把手103设置于排气端密封座104的外侧，方便操作者从外部进行安装、更换等操作。
具体的，端盖封板15和排气端密封座104相对，且设置于过滤本体12的后端(图3中的右端)，端盖封板15上开设有测试口156，以使待净化的废气从复合滤芯100的周向依次进入初除过滤体13和过滤本体12，经过过滤从端盖封板15的测试口156排出。
请参考图4，本公开实施例提供了第一种挥发性有机物净化装置200，包括箱体20和至少一个上述提供的第一种复合滤芯100或第二种复合滤芯100。
图4为挥发性有机物净化装置200的示意图，图5为图4的剖视图，请参考图4和图5所示，具体说明如下：
箱体20包括依次连通的进气口21、过滤腔201以及出气口24，复合滤芯100安装于箱体20，且伸入过滤腔201内，以使待净化气体从进气口21进入，流经复合滤芯100后从出气口24排出。
结合图5，具体地，过滤腔201包括连通的第一腔体22和第二腔体23，第一腔体22的进口与进气口21连通，第二腔体23的出口与出气口24连通。箱体20沿废气流通方向开设有多个与第一腔体22相对应的滤芯安装孔225，滤芯安装孔225和复合滤芯100一一对应，且复合滤芯100一一对应地安装于滤芯安装孔225中，以使待净化气体从进气口21进入，然后依次经过复合滤芯100过滤后，再流经第二腔体23，最后从出气口24排出。
可选的，结合图4，箱体20上开设的滤芯安装孔225下方设置有滤芯导轨227，滤芯安装孔225底部设置有密封底座，复合滤芯100通过滤芯导轨227安装于滤芯安装孔225。
复合滤芯100包括相对设置的把手盖板10和端盖封板15，在本实施例中，把手盖板10为封闭端，端盖封板15开设有第一通气孔151(与图1中的排气孔152作用相同)，当复合滤芯100安装于箱体20内后，把手盖板10与箱体20密封设置，待净化气体从箱体20的进气口21进入，经过复合滤芯100后从第一通气孔151流入第二腔体23，最后从出气口24排出。具体的，把手盖板10与箱体20通过橡胶件16密封。
可以理解的是，除了上述的连接方式，还可以有其他连接结构，例如，图6示出了本公开实施例提供的第二种挥发性有机物净化装置200，请参照图6所示。
复合滤芯100包括相对设置的把手盖板10和端盖封板15，使用时，复合滤芯100需要全部嵌入过滤腔201内，通过端盖封板15将箱体20的过滤腔201封闭。把手盖板10开设有第二通气孔101(与图1中的排气孔152作用相同)，端盖封板15和箱体20密封设置，当复合滤芯100安装于箱体20内后，待净化气体从箱体20的进气口21进入，经过复合滤芯100后从把手盖板10端的第二通气孔101流入到第二腔体23内，最后从 出气口24排出。具体的，端盖封板15和箱体20通过橡胶件16密封。
具体的，操作者手持复合滤芯100的把手盖板10，将端盖封板15插入滤芯安装孔225，且沿滤芯导轨227推入过滤腔201内，将排气端密封座104对准密封底座，转动把手盖板10的快拆盘盖，使其顺时针或者逆时针转动一定角度，与密封底座实现密封。在本实施例中，转动快拆盘盖顺时针旋转30°～90°，与密封底座实现密封。
本实施例中，结合图5和图6，至少一个滤芯安装孔225中安装有至少一个单向泄压阀28，单向泄压阀28的泄压方向为第一腔体22向第二腔体23的单向泄压方向。换句话说，多个滤芯安装孔225可以选择一个来安装单向泄压阀28，也可以选择两个或三个等。单向泄压阀28的数量也不限定，可以为一个，也可以为两个或三个等。单向泄压阀28可为重力式、弹簧式或磁吸式泄压阀。当挥发性有机物净化装置200吸附污染物量大，过滤阻力大于400～600Pa时，为防止因废气排放不畅，发生火灾或爆炸事故，单向泄压阀28自动或在控制器26(图7示出)的控制下开启，实现废气的应急排放，提高装置的安全性。
本实施例提供的第一种挥发性有机物净化装置200属于单侧废气中VOC S净化结构，由复合滤芯100与箱体20构成，可以理解的是，请参考图7，净化装置还包括传感器25、流量计、控制器26以及报警装置27。
传感器25和报警装置27均与控制器26通信，传感器25设置于箱体20的过滤腔201内且位于复合滤芯100的出气端，配置成输出表征过滤腔201内压降差的信号，控制器26配置成根据传感器25输出的信号控制报警装置27或单向泄压阀28的状态。
其中，传感器25为压差传感器，配置成检测气体经过复合滤芯100的压降，压降过低或过高均需报警，在一定气体流量条件下，当压差传感器的指示值超过规定限值，则触发运行状态异常报警器；当压差传感器的指示值超过规定上限值，则表示滤芯吸附饱和，需更换滤芯；当压差传感器指示值低于规定下限值，则表示两个腔体间或滤芯漏气，净化效率下降。
流量计为排气流量计，配置成测量气体的流量，当挥发性有机物净化装置200内的某个复合滤芯100出现密封不严或漏气时，导致过滤压降低于设定值，此时部分废气逃逸，VOCs净化效果差，需尽快维护，才能保障气体中污染物的有效净化和去除。
相关技术中的活性炭吸附净化装置的工作原理是：废气由风机提供动力，负压进入吸附箱后进入活性炭吸附层，利用活性炭吸附剂表面的吸附能力，使废气与大表面的多孔性活性炭吸附剂相接触，废气中的污染物被吸附在活性炭表面上，使其与气体混合物分离，净化后的气体高空排放。
本实施例提供的挥发性有机物净化装置200设计合理，结构紧凑，实现对空气和废气的过滤、VOCs吸附一体化净化，设备体积小，净化表面积大，便于安装、更换及维修，高表面活性，高吸附容量。改善了传统固定床式活性炭装置吸附面积小、床层阻力大、滤料更换操作困难、活性炭等吸附材料易受高沸点有机物污染，再生活化效率低、一次性使用费用高的问题。其风阻系数小，吸附容量大，设备能耗低，运行成本低，解吸脱附更容易，自动化运行、净化效率高、滤芯可循环利用、二次污染小、成本低、经济效益好，适用于大风量低浓度VOCs的净化处理。
请参考图8，图8示出了本公开实施例提供的第三种挥发性有机物净化装置200，该第三种挥发性有机物净化装置200和第一种挥发性有机物净化装置200的结构基本相同，区别具体说明如下：
图8为第三种挥发性有机物净化装置200的剖视图，请参照图8所示。
箱体20包括依次连通的进气口21、过滤腔201以及出气口24，过滤腔201包括第一过滤空腔224、第二过滤空腔226以及气体流通腔228，其中，第一过滤空腔224和第二过滤空腔226位于气体流通腔228的两侧，且第一过滤空腔224和第二过滤空腔226分别与气体流通腔228连通，第一过滤空腔224的进口和第二过滤空腔226的进口均与进气口21连通，第一过滤空腔224的出口和第二过滤空腔226的出口均与气体流通腔228的进口连通，气体流通腔228的出口与出气口24连通。
可选的，箱体20沿气体流经方向开设有多个滤芯安装孔225，滤芯安装孔225能够分别与第一过滤空腔224和第二过滤空腔226相对应，复合滤芯100的数量与滤芯安装孔225的总数量相同，且复合滤芯100一一对应地安装于滤芯安装孔225。以使待净化气体从进气口21进入箱体20，经过箱体20内复合滤芯100净化后，由复合滤芯100的端盖封板15的孔排出，经气体流通腔228汇集后，从出气口24排出。
可选的，滤芯安装孔225下方设置有滤芯导轨227，复合滤芯100通过滤芯导轨227 安装于滤芯安装孔225。
本实施例提供的第三种挥发性有机物净化装置200为双侧净化结构，改善了相关技术中的净化装置吸附面积小，床层阻力大，费用高的问题，主要实现对空气和废气的过滤、以及VOCs吸附一体化的净化，适用于大风量低浓度VOCs的净化处理，结构紧凑、自动化运行、净化效率高、过滤本体12可循环利用、二次污染小、成本低、经济效益好。
需要说明的是，在不冲突的情况下，本公开中的实施例中的特征可以相互结合。
在一些实施例中：
请参考图1：图1示出的复合滤芯100包括把手盖板10、手端密封座102、过滤本体12、初除过滤体13、端盖封15以及橡胶件16。过滤本体12包括外侧网121、吸附滤层123、内侧网125以及加强杆126，内侧网125设置于吸附滤层123的内表面，外侧网121设置于吸附滤层123的外表面，加强杆126设置在吸附滤层123的中间。初除过滤体13包括第一滤膜层132和第二滤膜层135，第二滤膜层135套设于外侧网121的外表面，第一滤膜层132套设于第二滤膜层135的外表面。初除过滤体13套设在过滤本体12的外表面以形成过滤组件。把手盖板10通过手端密封座102安装于过滤组件的一端，端盖封15安装于过滤组件的另一端，同时手端密封座102的外壁设置有密封槽以容置橡胶件16，端盖封15的外壁也设置有密封槽以容置橡胶件16。
请参考图2：图2示出的复合滤芯100的第一滤膜层132和第二滤膜层135均为圆形折叠结构，复合滤芯100一端的端盖封板15设置有排气孔152。
请参考图3：图3示出的复合滤芯100包括把手盖板10、过滤本体12、初除过滤体13以及端盖封15，初除过滤体13套设在过滤本体12的外表面以形成过滤组件。把手盖板10包括操作把手103、排气端密封座104以及耐油密封垫105。排气端密封座104封堵于过滤组件的一端，耐油密封垫105设置于排气端密封座104的一侧以密封排气端密封座104和过滤组件的连接处，操作把手103设置于排气端密封座104的另一侧。端盖封板15安装于过滤组件的另一端，端盖封板15设置有测试口156。
请参考图4：图4示出的挥发性有机物净化装置200包括箱体20以及传感器25。箱体20设置有连通的进气口21以及出气口24，箱体20设置有滤芯安装孔225以及滤芯导轨227，复合滤芯100通过滤芯导轨227安装于滤芯安装孔225内。传感器25安装于箱体20且配置成检测箱体20内的压降差。
请参考图5：图5示出的挥发性有机物净化装置200包括箱体20以及复合滤芯100，箱体20包括依次连通的进气口21、第一腔体22、第二腔体23以及出气口24，多个复合滤芯100依次间隔设置，且复合滤芯100的一端具有位于第一腔体22外的把手盖板10，把手盖板10与箱体20密封连接，复合滤芯100的其余部分位于第一腔体22内。复合滤芯100的另一端均具有端盖封板15，端盖封板15位于第一腔体22和第二腔体23的连接处，且端盖封板15设置有第一通气孔151，配置成将第一腔体22内过滤后的气体输入第二腔体23内。第一腔体22和第二腔体23构成过滤腔201，并且，在第一腔体22和第二腔体23的连接处安装有单向泄压阀28，单向泄压的方向为第一腔体22到第二腔体23的方向。
请参考图6：图6示出的挥发性有机物净化装置200包括箱体20以及复合滤芯100，箱体20包括依次设置的进气口21、第一腔体22、第二腔体23以及出气口24，多个复合滤芯100依次间隔设置。复合滤芯100的一端具有与箱体20密封连接的端盖封板15，复合滤芯100的另一端具有位于第二腔体23内的把手盖板10，复合滤芯100的其余部分位于第一腔体22内。把手盖板10位于第一腔体22和第二腔体23的连接处，把手盖板10设置有第二通气孔101，配置成将第一腔体22内过滤后的气体输入第二腔体23内。第一腔体22和第二腔体23构成过滤腔201，并且，在第一腔体22和第二腔体23的连接处安装有单向泄压阀28，单向泄压的方向为第一腔体22到第二腔体23的方向。
请参考图7：图7示出的传感器25与控制器26通信，控制器26与报警装置27通信，传感器25配置成输出表征过滤腔201内压降差的信号，控制器26配置成根据传感器25输出的信号控制报警装置27的状态。
请参考图8：图8示出的挥发性有机物净化装置200包括箱体20以及复合滤芯100，箱体20包括两条气流通路，其中一条包括依次设置的进气口21、第一过滤空腔224、气体流通腔228以及出气口24，另外一条包括依次设置的进气口21、第二过滤空腔226、气体流通腔228以及出气口24。第一过滤空腔224、第二过滤空腔226以及气体流通腔228构成过滤腔201。箱体20设置有多个滤芯安装孔225，以一一对应安装多个复合滤芯100， 每个滤芯安装孔225均对应有滤芯导轨227，复合滤芯100通过滤芯导轨227安装于滤芯安装孔225。多个复合滤芯100包括两排复合滤芯100，其中一排复合滤芯100依次间隔设置，且复合滤芯100的绝大部分位于第一过滤空腔224中，该复合滤芯100的端盖封板15位于第一过滤空腔224和气体流通腔228的连接处，端盖封板15设置有第一通气孔151，配置成将第一过滤空腔224中过滤的气体输入气体流通腔228。另一排复合滤芯100依次间隔设置，且复合滤芯100的绝大部分位于第二过滤空腔226中，该复合滤芯100的端盖封板15位于第二过滤空腔226和气体流通腔228的连接处，端盖封板15设置有第一通气孔151，配置成将第二过滤空腔226中过滤的气体输入气体流通腔228。
以上所述仅为本公开的具体实施例而已，并不用于限制本公开，对于本领域的技术人员来说，本公开可以有各种更改和变化。凡在本公开的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本公开的保护范围之内。
工业实用性
综上所述，本公开提供了一种复合滤芯及挥发性有机物净化装置，可以实现空气和废气的过滤、以及VOCs吸附一体化的净化，整体净化效率高，且使用成本低。

Claims (18)

  1. 一种复合滤芯，其特征在于，包括初除过滤体和过滤本体，所述过滤本体为空心柱状结构，所述初除过滤体包括第一滤膜层和第二滤膜层，所述第二滤膜层套设于所述过滤本体的外表面，所述第一滤膜层套设于所述第二滤膜层的外表面。
  2. 根据权利要求1所述的复合滤芯，其特征在于，所述第一滤膜层包括复合吸水纤维、驻极体聚丙烯纤维滤层、喷融聚丙烯吸油纤维、喷融聚丙烯纤维和初效过滤纤维中的至少一个。
  3. 根据权利要求1或2所述的复合滤芯，其特征在于，所述第二滤膜层包括活性炭无纺布、颗粒活性炭、活性炭纤维卷、活性炭纤维毡和过滤棉中的至少一个。
  4. 根据权利要求1-3任一项所述的复合滤芯，其特征在于，所述第一滤膜层为圆形或圆形折叠结构，和/或，所述第二滤膜层为圆形或圆形折叠结构。
  5. 根据权利要求1-4任一项所述的复合滤芯，其特征在于，所述过滤本体包括外侧网、吸附滤层以及内侧网，所述内侧网设置于所述吸附滤层的内表面，所述外侧网设置于所述吸附滤层的外表面。
  6. 根据权利要求5所述的复合滤芯，其特征在于，所述过滤本体还包括加强杆，所述加强杆设置于所述吸附滤层的中间。
  7. 根据权利要求1-6任一项所述的复合滤芯，其特征在于，所述过滤本体的吸附滤层包括活性炭滤层或分子筛滤层；
    其中，所述活性炭滤层包括颗粒状活性炭、蜂窝状活性炭、空心柱状活性炭和活性炭纤维过滤棉中的至少一个；
    所述分子筛滤层包括颗粒状分子筛、蜂窝状分子筛和空心柱状分子筛中的至少一个。
  8. 根据权利要求1-7任意一项所述的复合滤芯，其特征在于，所述复合滤芯还包括相对设置的把手盖板和端盖封板，所述把手盖板位于所述过滤本体和所述初除过滤体的一端， 所述端盖封板位于所述过滤本体和所述初除过滤体的另一端。
  9. 一种挥发性有机物净化装置，其特征在于，包括权利要求1-8任意一项所述的复合滤芯。
  10. 根据权利要求9所述的挥发性有机物净化装置，其特征在于，所述净化装置还包括箱体，所述箱体包括依次连通的进气口、过滤腔以及出气口，所述复合滤芯安装于所述箱体且伸入所述过滤腔内，以使待净化气体从所述进气口进入，流经所述复合滤芯后从所述出气口排出。
  11. 根据权利要求10所述的挥发性有机物净化装置，其特征在于，所述过滤腔包括连通的第一腔体和第二腔体，所述第一腔体的进口与所述进气口连通，所述第二腔体的出口与所述出气口连通；
    所述箱体开设有多个与所述第一腔体相对应的滤芯安装孔，所述复合滤芯一一对应地安装于所述滤芯安装孔中，以使待净化气体从所述进气口进入，经过所述复合滤芯后流经所述第二腔体，从所述出气口排出。
  12. 根据权利要求11所述的挥发性有机物净化装置，其特征在于，所述滤芯安装孔下方设置有滤芯导轨，所述复合滤芯通过所述滤芯导轨安装于所述滤芯安装孔。
  13. 根据权利要求11或12所述的挥发性有机物净化装置，其特征在于，所述复合滤芯包括相对设置的把手盖板和端盖封板，所述复合滤芯嵌入所述过滤腔；
    所述把手盖板与所述箱体密封设置，所述端盖封板开设有第一通气孔，或者，所述把手盖板开设有第二通气孔，所述端盖封板与所述箱体密封设置，以使待净化气体经过所述复合滤芯后通过所述第一通气孔或所述第二通气孔流入所述第二腔体。
  14. 根据权利要求13所述的挥发性有机物净化装置，其特征在于，所述把手盖板与所述箱体通过橡胶件密封，所述端盖封板与所述箱体通过橡胶件密封。
  15. 根据权利要求11-14任一项所述的挥发性有机物净化装置，其特征在于，至少一个所述滤芯安装孔中安装有至少一个单向泄压阀，所述单向泄压阀的泄压方向为所述第一腔体向所述第二腔体的单向泄压方向。
  16. 根据权利要求10所述的挥发性有机物净化装置，其特征在于，所述过滤腔包括第一过滤空腔、第二过滤空腔以及气体流通腔，所述第一过滤空腔和所述第二过滤空腔位于所述气体流通腔的两侧，且分别与所述气体流通腔连通，所述第一过滤空腔的进口和所述第二过滤空腔的进口均与所述进气口连通，所述第一过滤空腔的出口和所述第二过滤空腔的出口均与所述气体流通腔的进口连通，所述气体流通腔的出口与所述出气口连通；
    所述箱体开设有多个滤芯安装孔，所述滤芯安装孔能够分别与所述第一过滤空腔和所述第二过滤空腔相对应，所述复合滤芯一一对应地安装于所述滤芯安装孔，以使待净化气体从所述进气口进入，经过所述复合滤芯后流经所述气体流通腔，从所述出气口排出。
  17. 根据权利要求16所述的挥发性有机物净化装置，其特征在于，所述滤芯安装孔下方设置有滤芯导轨，所述复合滤芯通过所述滤芯导轨安装于所述滤芯安装孔。
  18. 根据权利要求15所述的挥发性有机物净化装置，其特征在于，所述净化装置还包括控制器、传感器以及报警装置；
    所述传感器和所述报警装置均与所述控制器通信，所述传感器设置于所述过滤腔内且位于所述复合滤芯的出气端，配置成输出表征所述过滤腔内压降差的信号，所述控制器配置成根据所述传感器输出的信号控制所述报警装置或所述单向泄压阀的状态。
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