TWI726400B - Multi-stage composite three-dimensional water curtain gas filtering device - Google Patents

Abstract

The invention is a multi-stage composite three-dimensional water curtain gas filtering device, which includes a casing, a pretreatment filtering unit, a three-dimensional water curtain wall filtering unit and a waterproof filtering unit. The pre-processing filter unit includes a first pre-processing filter layer and a first pre-processing filter layer spray device. The filter layer is made up of multiple layers of V-shaped three-dimensional filter nets. The spray device is arranged upstream and sprays along the air intake direction. ; The three-dimensional water curtain wall filter unit is set to be transverse and perpendicular to the horizontal direction, including a three-dimensional water curtain wall filter, a front spray device and a rear spray device. The filter is made up of multiple layers of V-shaped three-dimensional filter nets; front spray The shower device is arranged upstream and sprays the filter along the air intake direction; the rear spray device is arranged downstream and sprays the filter in the direction opposite to the air intake direction; the waterproof filter unit is stacked by a multi-layer V-shaped three-dimensional filter net The filter layer is made. The invention can well remove submicron pollution particles, acid mist and aerosols.

Description

Multi-stage composite three-dimensional water curtain gas filtering device

The invention relates to an industrial gas processing device, in particular to a submicron gas filtering device.

At present, there is a lack of technical devices for the treatment of sub-micron pollutants in the field of gas filtration. As far as filter materials are concerned, such as the use of traditional filter materials such as paper, glass fiber, aluminum filler or flat filter to filter gas, the only way to increase its density and thickness is to increase the contact area between the gas and the filter material to enhance the filtering effect. . However, the actual filtering effect is poor, and with the enhancement of the filtering effect, the filtering pressure drop is greatly increased, which greatly limits the scope of its use. The Chinese utility model patent ZL201420367118 named "square horizontal scrubber" has a novel design, is easy to install, takes up a small space, is conducive to maintenance and has a certain cleaning effect on larger particulate pollutants, but it has a certain effect on sub-micron pollutants. The cleaning effect is poor.

In addition, some people now use electrostatic dust removal and bag dust removal, but their application is limited due to the poor removal of fine pollutants, especially sub-micron particles, droplets, aerosols, and acid mist, and the high cost.

It is still an important task for the environmental protection industry to develop equipment that is convenient to manufacture and has excellent effects in removing sub-micron pollutants.

The purpose of the present invention is to provide a gas filtering device to improve the effect of gas purification, solve the problem of poor purification effect of aerosol, acid mist, droplets and other pollutants in gas processing, especially to solve the problem of poor purification effect on sub-micron particles problem.

In order to achieve the above objective, the present invention provides a multi-stage composite three-dimensional water curtain gas filtering device, which includes: The housing of the air inlet and the air outlet, and the pretreatment filter unit, the three-dimensional water curtain wall filter unit, and the waterproof filter unit arranged in order from the air inlet to the air outlet along the axial direction of the housing, wherein: The pretreatment filtration unit includes at least a first pretreatment filtration layer and a first pretreatment filtration layer spray device. The first pretreatment filtration layer is formed by stacking multiple V-shaped three-dimensional filters. The treatment filter layer spraying device is arranged upstream of the first pretreatment filter layer and sprays the first pretreatment filter layer along the air intake direction; The three-dimensional water curtain wall filter unit is arranged in a vertical direction so that the horizontal direction of the three-dimensional water curtain wall filter unit is perpendicular to the horizontal direction, and includes at least one three-dimensional water curtain wall filter and a three-dimensional water curtain wall filter front spray device , And a spray device after the three-dimensional water curtain wall filter, of which, The three-dimensional water curtain wall filter is formed by stacking multiple layers of V-shaped three-dimensional filter nets; The front spray device for the three-dimensional water curtain wall filter is arranged upstream of the three-dimensional water curtain wall filter and sprays the three-dimensional water curtain wall filter along the air intake direction; And the three-dimensional water curtain wall filter rear spray device is arranged downstream of the three-dimensional water curtain wall filter and sprays the three-dimensional water curtain wall filter in a direction opposite to the air intake direction; In addition, the waterproof filter unit is a filter layer formed by stacking multiple layers of V-shaped three-dimensional filter nets.

Preferably, the pre-processing filter unit further includes a second pre-processing filter layer and a second pre-processing filter layer spray device, and the first pre-processing filter layer and the second pre-processing filter layer are along the air intake direction. Arranged in sequence, the second pretreatment filter layer is formed by stacking multiple layers of V-shaped three-dimensional filter nets, and the second pretreatment filter layer spray device is arranged upstream of the second pretreatment filter layer and along the intake air. Spray the second pretreatment filter layer in a direction.

Preferably, the multi-stage composite three-dimensional water curtain gas filter device of the present invention further includes a reverse saturated spray unit, which is arranged upstream of the pretreatment filter unit, and includes a spray rod and a spray rod arranged on the sprayer. A plurality of nozzles on the rod, the plurality of nozzles spray liquid toward the incoming gas in a direction opposite to the intake direction, and make the sprayed liquid cover the entire transverse section of the shell, so that the sprayed gas is formed It is a gas with saturated humidity.

Preferably, the gas filter device is horizontal, and the axis of the housing is parallel to the horizontal direction.

Preferably, the cross section of the housing is rectangular or circular.

Preferably, the water outlet of the housing is located below the housing and adjacent to the waterproof filter unit for the sprayed liquid to flow out of the housing.

Preferably, the pretreatment filtration unit includes more than two pretreatment filtration layers and more than two pretreatment filtration layer spray devices.

Preferably, the three-dimensional water curtain wall filter unit has two or more three-dimensional water curtain wall filters, and each three-dimensional water curtain wall filter is provided with the three-dimensional water curtain wall filter on both sides. A spray device before the device and a spray device after the three-dimensional water curtain wall filter.

Preferably, the number of layers of the V-shaped three-dimensional filter screen and the density of the grid of the three-dimensional water curtain wall filter are set according to the physical and chemical properties of the gas.

Preferably, the multi-stage composite three-dimensional water curtain gas filtering device further includes a fan arranged at the air inlet.

In the prior art, the removal effect of submicron pollutant particles is poor. In contrast, the present invention proposes a multi-stage composite three-dimensional water curtain gas filter device, which is an innovative device for removing pollutants in the air. The multi-stage composite three-dimensional water curtain gas filter device has a multi-stage composite processing device arranged in sequence, and may at least include a pretreatment filter unit, a three-dimensional water curtain wall filter unit and a waterproof filter unit, and may also include a reverse saturation spray unit, Such a structural design is not only convenient to manufacture and maintain, but also has a good treatment effect on polluted gas, and the removal rate of micro-polluted dirt in the gas can reach more than 99.96.

Hereinafter, embodiments of the multi-stage composite three-dimensional water curtain gas filtering device of the present invention will be described with reference to the drawings.

The embodiments described here are specific specific embodiments of the present invention, which are used to illustrate the concept of the present invention. They are all explanatory and exemplary, and should not be construed as limiting the embodiments of the present invention and the scope of the present invention. In addition to the embodiments described herein, those skilled in the art can also adopt other obvious technical solutions based on the scope of the patent and the contents disclosed in the specification, and these technical solutions include adopting any obvious changes to the embodiments described herein. Technical solutions for replacement and modification.

The drawings in this specification are schematic diagrams to assist in explaining the concept of the present invention, and schematically show the shapes of various parts and their relationships. Please note that, in order to clearly show the structure of the components of the embodiments of the present invention, the drawings are not necessarily drawn to the same scale. The same reference signs are used to indicate the same or similar parts.

Fig. 1 is a schematic cross-sectional view of a first embodiment of the multi-stage composite three-dimensional water curtain gas filtering device of the present invention.

In the first embodiment, the multi-stage composite three-dimensional water curtain gas filter device has a housing 1 which forms a processing chamber. An air inlet 2 is provided at the front end of the processing chamber and an air outlet 3 is provided at the rear end of the processing chamber. The three-dimensional water curtain gas filter device also has a reverse saturation spray processing unit, a pretreatment filter unit 11, a three-dimensional water curtain wall filter unit 12, and a reverse saturated spray treatment unit, which are sequentially arranged from the air inlet 2 to the air outlet 3 along the axial direction of the housing 1. And the waterproof filter unit 13. In this embodiment, a fan 6 is also provided at the air inlet 2 for inputting gas into the processing chamber.

The gas filter device of this embodiment is horizontal, and the axis of the housing 1 is parallel to the horizontal direction. The cross section of the housing 1 may be circular or rectangular, or other shapes, such as trapezoid. It is preferably rectangular, such as a square. The shape and structure of the gas filter device of the present invention is not limited to the horizontal type, and can be a combination of a horizontal type and a vertical type, and can also be a vertical type under special circumstances. In the present invention, it is necessary to ensure that the three-dimensional water curtain wall filter unit 12 is arranged in the vertical direction so that its axis is in the horizontal direction. As long as the working direction of the three-dimensional water curtain wall filter unit 12 is ensured, as for the shape and structure of the gas filter device of the present invention Can be designed according to needs.

The housing 1 also includes a water outlet 41 for the sprayed liquid to flow out of the housing 1. As shown in FIG. 1, the water outlet 41 is connected to the sewer pipe 42 of the housing 1. The spray pipe system 5 is used to provide spray liquid 8, and the spray liquid 8 is sprayed through the spray head 40. The sewer pipe 42 is arranged under the casing, and can be a circular pipe or a rectangular sewer, that is, a sewer pipe type sewer. The water inlet of the sewer pipe 42 is a water outlet 41, which is connected to the bottom of the housing 1 and is used to collect and discharge the liquid sprayed by each functional unit from the housing 1. The sewer pipe 42 also has a discharge port 43 for discharging the collected sprayed liquid through the sewer pipe 42.

The reverse saturation spray unit 10 is arranged upstream of the pretreatment filter unit 11, and includes a spray bar and a plurality of spray heads 40 arranged on the spray bar. For example, the spray device of the reverse saturation spray treatment unit is composed of several spray heads. 40 spray bars are composed in parallel. In the present invention, the terms "upstream" and "downstream" refer to upstream or downstream of the gas flow in the intake direction.

FIG. 2 is a spray schematic diagram of the reverse saturated spray unit 10 when it is not in the air, and FIG. 3 is a spray schematic diagram of the reverse saturated spray unit 10 when it is in the air. As shown in Figures 2 and 3, the spray head 40 sprays liquid toward the incoming gas in a direction opposite to the intake direction, and the sprayed liquid covers the entire transverse section of the housing 1, so that the sprayed gas is formed as Gas with saturated humidity. As shown in Fig. 3, the incoming gas and the ejected liquid will oppress each other. In this state, the spray liquid 8 covering the entire transverse cross-section of the housing 1 and the gas can be formed into a gas with saturated humidity. Referring to FIG. 3, the pressure of the incoming gas on the liquid ejected from the spray head forces the shape of the ejected liquid to further expand outward, and the ejected liquid is utilized to cover the entire transverse section of the housing 1.

The pre-processing filter unit 11 includes a first pre-processing filter layer 20 and a second pre-processing filter layer 30 arranged in sequence along the air intake direction.

The first pretreatment filter layer 20 is formed by stacking multiple layers of V-shaped three-dimensional filter nets, and has a first pretreatment which is arranged upstream of the first pretreatment filter layer 20 and sprays the first pretreatment filter layer 20 along the air intake direction. Filter layer spraying device 31.

The second pretreatment filter layer 30 is formed by stacking multiple layers of V-shaped three-dimensional filter nets, and has a second pretreatment that is arranged upstream of the second pretreatment filter layer 30 and sprays the second pretreatment filter layer 30 along the air intake direction. Filter layer spraying device 32.

Both the first pretreatment filter layer 20 and the second pretreatment filter layer 30 are composed of a superposition of V-shaped three-dimensional filter nets, which have the characteristics of good filtering effect and reduced filtering pressure.

The three-dimensional water curtain wall filter unit 12 is arranged in the vertical direction so that the horizontal direction of the three-dimensional water curtain wall filter unit 12 is perpendicular to the horizontal direction, and includes a three-dimensional water curtain wall filter 22, a three-dimensional water curtain wall filter front spray device 33, and The three-dimensional water curtain wall filter rear spray device 34, wherein the three-dimensional water curtain wall filter 22 is formed by stacking multiple V-shaped three-dimensional filters; the three-dimensional water curtain wall filter front spray device 33 is arranged in the three-dimensional water curtain wall type The upstream of the filter 22 sprays the three-dimensional water curtain wall filter 22 along the air intake direction; and the rear spray device 34 of the three-dimensional water curtain wall filter is arranged downstream of the three-dimensional water curtain wall filter 22 and along the air intake direction The three-dimensional water curtain wall filter 22 is sprayed in the opposite direction.

In the present invention, the three-dimensional water curtain wall filter unit 12 is composed of at least one three-dimensional water curtain wall filter structure. Each three-dimensional water curtain wall filter structure is composed of a double-sided spray device and a water curtain wall filter. As shown in Figure 4, the water curtain wall filter is superimposed by a specific multi-layer V-shaped three-dimensional filter screen. The filter has two opposite sets of spray devices for continuous spraying on both sides of the filter. Due to the special three-dimensional structure of the V-shaped three-dimensional filter screen, the spray liquid 8 forms a three-dimensional water film on the overlapping three-dimensional filter screen. Multi-layer water curtain wall. The water curtain wall is formed by a three-dimensional water curtain 7, and the three-dimensional water curtain 7 includes a multi-layer water film formed in a V-shaped three-dimensional filter screen. The filtered gas passes through the multi-layer three-dimensional water curtain under pressure, and the soluble micro-pollutants in the gas come into contact with the filter screen to capture the micro-pollutants.

The number of layers of the V-shaped three-dimensional filter and the density of the grid in the water curtain wall filter are determined by the physical and chemical properties of the gas, such as the type of gas, gas velocity, gas volume, pollutant content, temperature, etc., technology in this field The personnel can design the number of layers and grid density of the V-shaped three-dimensional filter in the water curtain wall filter according to the design needs. The number of layers of the V-shaped three-dimensional filter in the water curtain wall filter can be 1-5 layers, or more than 5 layers. In the implementation, it can be designed as 3 layers.

In this embodiment, although FIG. 1 shows that there is only one three-dimensional water curtain wall filter structure, according to the needs of actual working conditions, the embodiment of the present invention can also adopt two or more three-dimensional water curtain wall filter structures. Based on this principle, those skilled in the art can design according to specific needs.

In the present invention, the sprayed liquid (ie spray liquid) can be water, purified water, purified water, acid, alkaline water, etc., and those skilled in the art can design and select according to design requirements. The spray liquid is preferably filtered water, that is, purified water or pure water.

The water removal filter unit 13 is a filter layer formed by stacking multiple layers of V-shaped three-dimensional filter screens, and its function is to remove water and further remove residual micro-pollutants in the gas. In the present invention, the dewatering filter unit 13 is composed of at least one dewatering filter layer, and the dewatering filter layer is superimposed by a V-shaped three-dimensional filter screen to ensure the filtering effect and the gas passing rate.

Since it only serves as the final finishing cleaning, the water removal filter unit does not need to have a spray device.

The invention adopts the original three-dimensional water curtain wall filter unit 12, and in this embodiment, the four-stage filter unit continuously works, which can greatly improve the filtering effect of the micro-polluted dirt in the gas, and the removal rate can reach more than 99.96.

5 is a schematic cross-sectional view of a second embodiment of the multi-stage composite three-dimensional water curtain gas filtering device of the present invention. Compared with the first embodiment, the second embodiment does not include the reverse saturation spray unit 10. Under certain working conditions, the multi-stage composite three-dimensional water curtain gas filter device of the present invention does not need to have a reverse saturated spray unit 10 to meet the design requirements. The three-stage filter device of the second embodiment can also achieve excellent performance. The filtering effect of removing micro-polluting dirt.

6 is a schematic cross-sectional view of the third embodiment of the multi-stage composite three-dimensional water curtain gas filtering device of the present invention. As shown in the figure, the third embodiment is also a three-stage filter device, including a pretreatment filter unit 11, a three-dimensional water curtain wall filter unit 12, and a waterproof filter unit 13. However, in the first and second embodiments, the pre-processing filter unit 11 includes the first pre-processing filter layer 20 and the second pre-processing filter layer 30 sequentially arranged along the air intake direction. In contrast, in the third embodiment In the example, the pre-processing filter unit 11 only includes one pre-processing filter layer, that is, the first pre-processing filter layer 20. In the embodiment of the present invention, according to certain working conditions, when the present invention can also be designed such that the pretreatment filter unit 11 includes only one pretreatment filter layer, such an embodiment can also meet the design requirements and can also achieve excellent performance. The filtering effect of removing micro-polluting dirt.

The embodiments of the present invention are not limited to the above-mentioned embodiments, and may have other embodiments. For example, the pretreatment filtration unit may also include more than two pretreatment filtration layers and more than two pretreatment filtration layer spraying devices, and the pretreatment filtration layer spraying devices are respectively matched with the pretreatment filtration layer to clean the pretreatment filtration. Floor. Those skilled in the art can determine the number of pretreatment filter layers of the pretreatment filter unit according to the specific operating conditions of the equipment. For another example, in the previous embodiments, the fans are all arranged at the air inlet, but they can also be arranged at the air outlet or other suitable positions, and even multiple fans at different positions may be arranged. According to the specific working conditions and equipment structure, the fan may not be provided.

The present invention uses a V-shaped three-dimensional filter screen, and its material can be selected according to needs, such as plastic, metal, and so on. Those skilled in the art can select the prior art V-shaped three-dimensional filter screen according to the principle of the present invention, and design the size, number of layers and grid density of the V-shaped three-dimensional filter screen.

Figures 7, 8 and 9 are respectively a top view, a front view and a right side view of the V-shaped three-dimensional filter used in the first to third embodiments of the multi-stage composite three-dimensional water curtain gas filter device of the present invention. It should be noted that the rear schematic view and the left schematic view of the illustrated V-shaped three-dimensional filter are the same as the front schematic view and the right schematic view, respectively.

Fig. 10 is a three-dimensional schematic diagram of a V-shaped three-dimensional filter screen used in the first to third embodiments of the multi-stage composite three-dimensional water curtain gas filter device of the present invention, with the square funnel mouth facing upward. Fig. 11 is also a three-dimensional schematic diagram of the three-dimensional filter used in the multi-stage composite three-dimensional water curtain gas filter device of the present invention, but the square funnel mouth is downward.

As shown in Figures 7-11, the weaving of the V-shaped three-dimensional filter screen 9 used in the present invention adopts a three-dimensional weaving method. The filtering unit of the filter screen is a polyhedral V-shaped three-dimensional structure. Structure arrangement. Due to the characteristics of such a three-dimensional structure, the filter screen greatly increases the mechanical interception and inertial collision probability of the polluted particles in the filtered gas when filtering the gas, greatly improves the filtering effect, and effectively reduces the filtration pressure drop. , To ensure the smooth flow of filtered gas. Referring again to Figure 4, more importantly, the present invention utilizes the three-dimensional structure of the filter screen. When fully sprayed, each layer of the grid can form a water film, and the overlapping three-dimensional grids will form a multi-layer water film. It is arranged three-dimensionally to form a three-dimensional water curtain wall. When the gas to be filtered passes through it, the pollutants in the gas can be washed out to the greatest extent. By adopting a V-shaped three-dimensional filter screen and designing a specific innovative structure, the filter device of the present invention obtains an excellent industrial production effect of filtering submicron pollutant particles.

The V-shaped three-dimensional filter screen 9 includes a plurality of filter units in the shape of a tetrahedron, and each filter unit includes at least two groups of filaments interwoven together perpendicularly to each other; the filaments of each group are parallel to each other, and the cross section of each group of filaments Multiple "V"-shaped structures are arranged.

Each filter unit includes a first group of materials. The filaments of the first group of materials have offset spacing in the vertical and horizontal directions to form a plurality of "V"-shaped structural arrangements. Each filament belonging to the first group of materials is Keep a predetermined distance from other filaments in the vertical and horizontal directions. Each filter unit also includes a second group of materials. The filaments of the second group of materials have offset spacing in the vertical and horizontal directions to form a plurality of "V"-shaped structural arrangements, and each filament belongs to the second group of materials. Both maintain a predetermined distance from other filaments in the vertical and horizontal directions. The filaments of the first group of materials and the filaments of the second group of materials are perpendicular to each other and interlaced on the same plane.

Each filter unit may also include the n-th group of materials, where n is a positive integer greater than or equal to 3. The filaments of the nth group of materials are parallel to each other, and the filaments of the nth group of materials are interlaced with the filaments of the first group of materials or the second group of materials.

Each filter unit is interlaced braided connection or integrated fixed connection, which can be prepared by a mold forming method or an injection molding method. The processing method of the filter can be weaving, molding, injection molding or 3D printing.

The cross-section of the filament forming the filtration unit may be circular, with a diameter of, for example, 10 μm-5 cm.

The V-shaped three-dimensional filter screen can be made of high molecular polymer, thermoplastic polymer material, composite fiber material and natural or synthetic material with coating. The coating may be a thermoplastic coating with heat shrinkability

A specific embodiment of the V-shaped three-dimensional filter screen will be described below. This specific embodiment adopts a frame structure and a net structure to form a filter unit, wherein the wire of the frame structure is thicker than the wire of the net structure to increase filtration. The crispness and applicability of the net. This particular embodiment is suitable for the case where the filter screen has a large area. Generally, when the radial size of the filter screen is greater than 2 meters, it can be considered whether to choose this embodiment, for example, when the radial size is 5 meters×5 meters. This specific implementation mode is only a selectable and applicable mode, and is not a necessary structure for the present invention.

As an implementation of the V-shaped three-dimensional filter screen, the filter unit of the V-shaped three-dimensional filter screen can be a tetrahedral square-shaped structure, and each filter unit is composed of a frame structure and a net structure interlaced, and the frame structure is composed of frame warp threads. A frame structure formed by weaving the frame weft wires perpendicularly at a predetermined distance, and the cross section of the filter unit is at least a W-shaped structure. The mesh structure is a mesh surface structure formed by the mesh warp threads and the mesh weft threads interwoven perpendicularly to each other, and is used to ensure the mesh density of the filter mesh. The frame warp threads and the net warp threads are parallel to each other, and are regularly arranged in a predetermined sequence, distance and interval. The frame weft thread and the net weft thread are parallel to each other, and are regularly arranged in a predetermined order, distance and interval.

In this embodiment, the diameter of the cross-section of the frame warp threads may be greater than the diameter of the cross-section of the mesh warp threads. The ratio of the cross-sectional diameter of the frame warp wire to the screen warp wire can range from 1.1:1 to 5:1. The diameter of the cross-section of the frame weft wire may be greater than the diameter of the cross-section of the mesh weft wire. The ratio of the cross-sectional diameter of the frame weft wire and the net weft wire is 1.1:1 ~ 5:1.

In this embodiment, the frame warp threads and a number of mesh warp threads are arranged at regular intervals to form a large warp thread group, and each thread belonging to the large warp thread group is in horizontal and vertical directions with other threads in the group. Keep a predetermined distance on the board. The frame weft thread and several net weft threads are arranged at intervals to form a large weft thread group, the cross section of which is at least one W-shaped structure, and each thread belonging to the large weft thread group is kept in the horizontal and vertical directions with the other wires in the group. Predetermined distance. The filaments of the large warp thread group and the large weft thread group are staggered in a special geometric form, so that the cross section of the filter unit has at least one W-shaped structure, and at the same time, the cross section has a certain thickness.

In this embodiment, the V-shaped three-dimensional filter screen may also include the Nth group of materials, which are interlaced with the filaments of the large warp thread group and/or the large weft thread group, where N≥3, and the large warp thread group is the first The first group of materials, the large weft thread group is the second group of materials. There are N frame wefts between the two frame warps, N≥3.

In this embodiment, the number of frame warp threads in each large warp thread group is an odd number, the number of net warp threads is an even number, and the warp threads at both ends of each filter unit are shared with the next filter unit.

In this embodiment, the mesh warp threads can be evenly distributed on both sides of the frame warp threads, and the number of the mesh warp threads on both sides can be equal.

In this embodiment, the cross-sectional diameter of the frame warp and the frame weft can be the same, and the value range is 0.055~25mm; the cross-sectional diameter of the mesh warp and the weft can be the same, and the value range is 0.050~ 22.7mm.

In this embodiment, the ratio of the cross-sectional diameter of the frame warp wire and the mesh warp wire can be 1.3:1 ~ 3.0:1; the ratio of the cross-sectional diameter of the frame weft wire and the mesh weft wire can be 1.3:1 ~ 3.0:1.

Another specific embodiment of the V-shaped three-dimensional filter will be described below. As shown in FIG. 12, the V-shaped three-dimensional filter screen can be stacked as a filter screen layer or a filter, which includes an N-layer three-dimensional filter screen 9 and a grid 91 located on the side of the N-layer three-dimensional filter screen 9. In FIG. 12, although only the grille 91 located on the side above the N-layer three-dimensional filter screen 9 is shown, the grille 91 can be provided on both sides, and generally speaking, the grille 91 is provided on both sides. There are more cases where the grill 91 is provided on only one side. Please note that the grille 91 is a fixed and supporting structure of the filter layer or filter, which can increase the stability and safety of the filter layer or filter. This structure is the filter layer or filter can choose the applicable structure , But it is not a structure that the present invention must adopt. Obviously, adding the grid 91 will increase the size of the filter layer or filter and increase the structural components. Obviously, the filter mesh layer or the filter needs to be fixed in the housing of the gas filter device of the present invention through structural members, but the V-shaped three-dimensional filter can be fixed in various existing ways, and it can also be designed with new simplicity, lightness and weight. Reliable structure to fix the V-shaped three-dimensional filter in the housing. One filter mesh layer or filter may include V-shaped three-dimensional filter meshes with different layers, for example, the number of layers may be 1, 2, 3, 5, 6, 7, or more layers, such as 10 layers. Since the grill 91 is a member that can be selected as to whether it is applicable or not, the grill 91 is not shown in the previous drawings of the first to third embodiments. When the size of the filter layer or filter is large enough to require a specific structure to fix and support, the specific structure of the grid can be considered.

Each layer of the three-dimensional filter screen 9 includes a plurality of filter units in the shape of a tetrahedron, and the plurality of filter units are connected to form a three-dimensional filter screen. Each filter unit includes at least two sets of mutually perpendicularly interwoven filaments. The cross-section of the group wire is arranged in a plurality of V-shaped structures, and N is a natural number greater than or equal to 1. The grid 91 includes a plurality of support parts for supporting the N-layer three-dimensional filter screen 9, and the plurality of support parts are adapted to the N-layer three-dimensional filter screen 9.

In the aforementioned filter mesh layer or filter, each layer of three-dimensional filter mesh 9 can be arranged in parallel, and the distance between any two layers of three-dimensional filter mesh is within a predetermined distance range.

In the aforementioned filter mesh layer or filter, each support portion is provided at a predetermined position on the grid 91, and each layer of three-dimensional filter mesh 9 is provided on a corresponding support portion.

In the aforementioned filter mesh layer or filter, some or all of the three-dimensional filter meshes of the N-layer three-dimensional filter mesh 9 have different filter pore diameters.

In the aforementioned filter layer or filter, the filter aperture of the i-th three-dimensional filter 9 in the N-layer three-dimensional filter 9 is larger than the filter aperture of the (i+1)-th three-dimensional filter.

In the aforementioned filter layer or filter, the grille 91 may include a frame, and the shape of the frame is at least one of the following: circular, oval, square, and cross. The grille may be made of at least one of the following materials Made: FRP, steel and industrial plastics.

In the aforementioned filter mesh layer or filter, the grid 91 may include at least two groups of interwoven supporting structures, each group of supporting structures includes at least one keel, and any two groups of supporting structures are arranged crosswise. The crossing angle between the intersecting keels is less than or equal to a predetermined angle. It should be pointed out here that in the present invention, the number of layers of the V-shaped three-dimensional filter in each filter layer or filter and the setting of the density of the grid are determined by the physical and chemical properties of the gas, such as the type of gas, For air speed, air volume, pollutant content, temperature, etc., those skilled in the art can design the number of layers and grid density of each filter layer or V-shaped three-dimensional filter in the filter according to design requirements. In the above embodiment, the filter layer or filter includes: the first pretreatment filter layer 20 and the second pretreatment filter layer 21 of the pretreatment filter unit 11; the three-dimensional water curtain wall filter of the three-dimensional water curtain wall filter unit 12 22; and, the waterproof filter layer 23 of the waterproof filter unit 13.

The number of filter structures in each filter unit is also determined by the need for gas filtration.

Please note that those skilled in the art can modify and combine the features of the above-mentioned embodiments without departing from the spirit of the present invention. Therefore, the present invention is not limited to the above-mentioned embodiments. Moreover, the specific features such as shape, size and position of the multi-stage composite three-dimensional water curtain gas filter device of the present invention can be specifically designed with the functions of the features disclosed above, and these designs can be realized by those skilled in the art. For example, the radial size of the multi-stage composite three-dimensional water curtain gas filter device of the present invention can be specifically designed according to needs, and can be large or small, for example, designed to be 1-2 meters.

The invention constitutes a composite treatment device and has an original treatment unit, which has a good treatment effect on submicron pollutants.

The present invention is a new type of aerosol treatment device with good treatment effect on submicron pollutants, easy to manufacture and maintain, and is an important advancement in the environmental protection field of removing harmful components of micron aerosol.

1: Shell 2: Air inlet 3: Air outlet 5: Spray piping system 6: Fan 7: Three-dimensional water curtain 8: Spray liquid 9: V-shaped three-dimensional filter 91: grille 10: Reverse saturated spray unit 11: Pretreatment filter unit 12: Three-dimensional water curtain wall filter unit 13: Waterproof filter unit 20: First pretreatment filter layer 21: Second pretreatment filter layer 22: Three-dimensional water curtain wall filter 23: Waterproof filter layer 30: Reverse saturated spray device 31: Spray device for the first pretreatment filter layer 32: The second pretreatment filter layer spray device 33: Three-dimensional water curtain wall filter front spray device 34: Three-dimensional water curtain wall filter rear spray device 40: nozzle 41: water outlet 42: sewer pipe 43: Drain

In order to enable your reviewer to further understand the purpose, features, and effects of the present invention, three preferred embodiments are listed below, which will be described in detail in conjunction with the drawings. Among them: Fig. 1 is a schematic cross-sectional view of a first embodiment of the multi-stage composite three-dimensional water curtain gas filtering device of the present invention. Fig. 2 is a spraying schematic diagram of the reverse saturated spraying unit of the first embodiment of the multi-stage composite three-dimensional water curtain gas filter device of the present invention when the air is not in the air. Fig. 3 is a schematic view of the spraying of the reverse saturated spray unit of the first embodiment of the multi-stage composite three-dimensional water curtain gas filter device of the present invention when air is taken in. 4 is a schematic diagram of the working state of the three-dimensional water curtain wall filter unit of the first embodiment of the multi-stage composite three-dimensional water curtain gas filter device of the present invention. 5 is a schematic cross-sectional view of a second embodiment of the multi-stage composite three-dimensional water curtain gas filtering device of the present invention. 6 is a schematic cross-sectional view of the third embodiment of the multi-stage composite three-dimensional water curtain gas filtering device of the present invention. FIG. 7 is a schematic top view of the V-shaped three-dimensional filter used in the first to third embodiments of the multi-stage composite three-dimensional water curtain gas filter device of the present invention. Fig. 8 is a schematic front view of a V-shaped three-dimensional filter used in the first to third embodiments of the multi-stage composite three-dimensional water curtain gas filter device of the present invention. FIG. 9 is a right side view of the V-shaped three-dimensional filter used in the first to third embodiments of the multi-stage composite three-dimensional water curtain gas filter device of the present invention. Fig. 10 is a three-dimensional schematic diagram of a V-shaped three-dimensional filter used in the first to third embodiments of the multi-stage composite three-dimensional water curtain gas filter device of the present invention. FIG. 11 is a three-dimensional schematic diagram of a V-shaped three-dimensional filter used in the first to third embodiments of the multi-stage composite three-dimensional water curtain gas filter device of the present invention. Fig. 12 is a three-dimensional schematic diagram of the multi-stage composite three-dimensional water curtain gas filtering device of the present invention with a V-shaped three-dimensional filter screen stacked to form an optional grid filter layer or filter.

1: shell

2: air inlet

3: air outlet

5: Spray piping system

6: Fan

10: Reverse saturated spray unit

11: Pretreatment filter unit

12: Three-dimensional water curtain wall filter unit

13: Waterproof filter unit

20: The first pretreatment filter layer

21: The second pretreatment filter layer

22: Three-dimensional water curtain wall filter

23: Waterproof filter layer

30: Reverse saturation spray device

31: The first pretreatment filter layer spray device

32: The second pretreatment filter layer spray device

33: Three-dimensional water curtain wall filter front spray device

34: Three-dimensional water curtain wall filter rear spray device

41: water outlet

42: Sewer pipe

43: Drain

Claims (10)

A multi-stage composite three-dimensional water curtain gas filtering device includes a housing with an air inlet and an air outlet, and a pretreatment filter unit sequentially arranged from the air inlet to the air outlet along the axial direction of the housing, and a three-dimensional Water curtain wall filter unit and waterproof filter unit, including: The pretreatment filtration unit includes at least a first pretreatment filtration layer and a first pretreatment filtration layer spray device. The first pretreatment filtration layer is formed by stacking multiple V-shaped three-dimensional filters. The treatment filter layer spraying device is arranged upstream of the first pretreatment filter layer and sprays the first pretreatment filter layer along the air intake direction; The three-dimensional water curtain wall filter unit is arranged in a vertical direction so that the horizontal direction of the three-dimensional water curtain wall filter unit is perpendicular to the horizontal direction, and includes at least one three-dimensional water curtain wall filter and a three-dimensional water curtain wall filter front spray device , And the spray device behind the three-dimensional water curtain wall filter, of which: The three-dimensional water curtain wall filter is formed by stacking multiple layers of V-shaped three-dimensional filter nets; The front spray device for the three-dimensional water curtain wall filter is arranged upstream of the three-dimensional water curtain wall filter and sprays the three-dimensional water curtain wall filter along the air intake direction; And the three-dimensional water curtain wall filter rear spray device is arranged downstream of the three-dimensional water curtain wall filter and sprays the three-dimensional water curtain wall filter in a direction opposite to the air intake direction; and the waterproof The filter unit is a filter layer made up of multiple layers of V-shaped three-dimensional filter nets, without a spray device. The multi-stage composite three-dimensional water curtain gas filtration device according to claim 1, wherein: the pretreatment filtration unit further includes a second pretreatment filtration layer and a second pretreatment filtration layer spray device, and the first pretreatment filtration unit The treatment filter layer and the second pretreatment filter layer are arranged in sequence along the air intake direction, the second pretreatment filter layer is formed by stacking multiple layers of V-shaped three-dimensional filter meshes, and the second pretreatment filter layer spray device It is arranged upstream of the second pretreatment filter layer and sprays the second pretreatment filter layer along the air intake direction. The multi-stage composite three-dimensional water curtain gas filter device according to claim 1, further comprising a reverse saturated spray unit, which is arranged upstream of the pretreatment filter unit, including a spray rod and a A plurality of nozzles on the spray rod, the plurality of nozzles spray liquid toward the incoming gas in a direction opposite to the intake direction, and make the sprayed liquid cover the entire transverse section of the shell, so that the sprayed liquid The gas is formed into a gas with saturated humidity. The multi-stage composite three-dimensional water curtain gas filter device according to claim 1, wherein: the gas filter device is horizontal, and the axis of the shell is parallel to the horizontal direction. The multi-stage composite three-dimensional water curtain gas filtering device according to claim 4, wherein: the cross section of the casing is rectangular or circular. The multi-stage composite three-dimensional water curtain gas filtering device according to claim 4, wherein: the water outlet of the housing is located below the housing and adjacent to the waterproof filter unit for the sprayed liquid to flow out The housing. The multi-stage composite three-dimensional water curtain gas filtration device according to claim 3, wherein: the pretreatment filtration unit includes more than two pretreatment filtration layers and more than two pretreatment filtration layer spray devices. The multi-stage composite three-dimensional water curtain gas filtering device according to any one of claims 1 to 7, wherein: the three-dimensional water curtain wall filter unit has two or more three-dimensional water curtain wall filters, Each three-dimensional water curtain wall filter is provided with the three-dimensional water curtain wall filter front spray device and the three-dimensional water curtain wall filter rear spray device on both sides. The multi-stage composite three-dimensional water curtain gas filtering device according to any one of claims 1 to 7, wherein: the number of layers of the V-shaped three-dimensional filter screen and the density of the grid of the three-dimensional water curtain wall filter are determined by the gas The physical and chemical properties are set. The multi-stage composite three-dimensional water curtain gas filtering device according to any one of claims 1 to 7, further comprising a fan arranged at the air inlet.

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