Air purification and impurity removal device

Abstract

The present invention provides an air purification and impurity removal device, comprising a box shell, wherein the surface of the box shell is provided with an air intake port and an air exhaust port, and the inside of the box shell is provided with a throttling nozzle, a turbulent flow combiner, a cyclone separation component, a vacuum pump and an exhaust pipe, wherein the inlet of the throttling nozzle is installed corresponding to the position of the air intake port, the outlet of the throttling nozzle is connected to the turbulent flow combiner, the outlet of the turbulent flow combiner is connected to a closed space in the box shell, the inlet of the vacuum pump is connected to the closed space, and the outlet of the vacuum pump is connected to the exhaust port via an exhaust pipe; the cyclone separation component is installed in the closed space; the air flow is pre-processed through structural design, and then impurities and droplets in the air are separated by the centrifugal force of a small cyclone tube to achieve the purpose of purifying the air, and in addition, water flow is directly drawn from the outside to flush the internal cyclone, and the device does not need to be disassembled.

Description

Technical Field

[0001] The present invention relates to the technical field of air purification equipment, and in particular to an air purification and impurity removal device. Background Art

[0002] Air purification equipment (also known as "air cleaning equipment" or air freshener) refers to products that can filter out pollutants in the air and effectively improve air cleanliness. They are mainly household or commercial air purification equipment that removes indoor pollution. Air purification equipment can filter out pollutants such as suspended particles in the air, bacteria, viruses, fungal spores, pollen, asbestos, etc.

[0003] However, in the process of purifying the air, the existing air purification device usually needs to disassemble and clean the filter and other parts to ensure the normal operation of the air purification device. The existing air purification device cannot self-clean the filter structure, and the manual disassembly and cleaning are labor-intensive and cumbersome, which is not suitable for popularization and application. Therefore, it is necessary to provide a new technical solution to solve the defects of the existing air purification device. Summary of the invention

[0004] Based on the above purpose, the present invention provides an air purification and impurity removal device, which pre-treats the air flow through structural design, and then uses the centrifugal force of a small cyclone tube to separate impurities and droplets in the air to achieve the purpose of purifying the air. In addition, water is directly drawn from the outside to flush the internal cyclone without the need to disassemble the device.

[0005] The technical solution adopted by the present invention is as follows: an air purification and impurity removal device, comprising a box shell, the surface of the box shell is provided with an air intake port and an air exhaust port, the inside of the box shell is provided with a throttling nozzle, a turbulent flow combiner, a cyclone separation component, a vacuum pump and an exhaust pipe, the inlet of the throttling nozzle is installed corresponding to the position of the air intake port, the outlet of the throttling nozzle is connected to the turbulent flow combiner, the outlet of the turbulent flow combiner is connected to the enclosed space in the box shell, the inlet of the vacuum pump is connected to the enclosed space, and the outlet of the vacuum pump is connected to the exhaust port through the exhaust pipe;

[0006] The cyclone separation assembly is installed in a closed space, and includes a plurality of cyclone tubes arranged side by side, and the plurality of cyclone tubes arranged side by side are fixedly installed inside the box shell through a first support plate and a second support plate, and the first support plate and the second support plate restrict the airflow entering the closed space to enter from the cyclone tube inlet and be discharged from the cyclone tube outlet. A liquid collecting tank is installed below the closed space in the box shell, and a plurality of drainage ports facing the liquid collecting tank are arranged at the bottom of the closed space, and the plurality of drainage ports are all provided with a pipe section extending toward the lower liquid collecting tank, and a one-way valve is arranged at the bottom flow port of the pipe section.

[0007] Furthermore, a filter membrane is installed in the enclosed space, and the filter membrane is located downstream of the cyclone separation component.

[0008] A high-pressure rotating nozzle for flushing the vortex tube is also installed in the enclosed space. The high-pressure rotating nozzle is connected to a micro water pump through a pipeline. The water pump supplies flushing water to the high-pressure rotating nozzle. Water is drawn from the outside by the water pump to spray and clean the vortex tube, and the cleaning water is also discharged to the liquid collecting tank through the drain port.

[0009] The internal flow channel of the throttling nozzle includes a nozzle large diameter straight section, a nozzle tapering section, a nozzle expanding section, and a nozzle small diameter straight section connected in sequence. The nozzle large diameter straight section is provided with a first air inlet end away from the nozzle tapering section. The first air inlet end is fixedly connected to the air intake port for air to enter the air purification and impurity removal device. The nozzle tapering section and the nozzle expanding section are connected through a nozzle throat. The nozzle throat is the part with the smallest inner diameter of the throttling nozzle. The end of the nozzle expanding section away from the nozzle tapering section is connected to the nozzle small diameter straight section. The end of the nozzle small diameter straight section away from the nozzle expanding section is provided with a first air outlet end, and the first air outlet end is connected to the turbulent flow combiner.

[0010] The inner surface of the nozzle converging section is a converging curved surface with a gradually increasing radius of curvature, and preferably, the ratio of the maximum caliber to the minimum caliber of the nozzle converging section is greater than 4.2. Moreover, the length of the nozzle expanding section is much smaller than the length of the nozzle converging section, and the entire nozzle expanding section and the part of the nozzle converging section adjacent to the nozzle throat are arranged symmetrically with respect to the nozzle throat.

[0011] The swirl tube is preferably an axial flow structure, and each swirl tube is composed of a swirl tube air intake section and a swirl tube separation section. The swirl tube air intake section and the swirl tube separation section are both cylindrical sections, and the diameter of the swirl tube air intake section is smaller than the diameter of the swirl tube separation section. A fixed shaft is coaxially arranged inside the swirl tube separation section, and a swirl blade is installed on the fixed shaft. The swirl blade swirls the incoming air for centrifugal separation. Preferably, the outer diameter of the contour of the swirl blade along the axial direction vertical projection is smaller than the inner diameter of the swirl tube, so that a gap is left between the swirl blade and the inner diameter of the swirl tube, so that the separated droplets and impurity particles can be discharged from the swirl tube more conveniently.

[0012] The advantage of the technical solution of the present invention is that the air purification and impurity removal device of the present invention can realize the air dehumidification function by condensing droplets with the help of throttling effect, and at the same time, the condensed droplets are subjected to a similar atomization treatment for the accelerated airflow, which can optimize the subsequent turbulent aggregation process, so that small-particle impurities in the air can be smoothly aggregated into large-particle impurities, ensuring the purification effect of cyclone separation, that is, condensation dehumidification, condensed droplets strengthen turbulent aggregation, and impurities are aggregated into large particles and then subjected to cyclone separation. The three processes are laid in sequence, and the small-diameter cyclone tube can complete the air purification function in coordination. And the pathogens and impurities in the air that are difficult to remove are filtered by the subsequent medium filter membrane to obtain dry and pure air.

[0013] In addition, the air purification and impurity removal device of the present invention uses a high-pressure nozzle to perform 360-degree clean flushing of the cyclone tube without dead angles, and there is no need to disassemble the device, thus solving the problem that conventional air purification devices need to be disassembled for cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the external outline of the air purification and impurity removal device of the present invention;

[0015] Figure 2 It is an internal cross-sectional view of the air purification and impurity removal device of the present invention;

[0016] Figure 3 It is a schematic diagram of the throttling nozzle structure of the air purification and impurity removal device of the present invention;

[0017] Figure 4 It is a cross-sectional schematic diagram of a turbulent flow condenser of an air purification and impurity removal device of the present invention;

[0018] Figure 5 It is a schematic diagram of the internal structure of the turbulent condenser of the air purification and impurity removal device of the present invention;

[0019] Figure 6 It is a schematic diagram of the three-dimensional structure of the cyclone separation component of the air purification and impurity removal device of the present invention;

[0020] In the figure: 1, air intake, 2, throttling nozzle, 3, turbulence condenser, 4, spoiler column, 5, swirl tube, 6, high-pressure rotating nozzle, 7, high-pressure water pump, 8, filter membrane, 9, vacuum pump, 10, liquid collecting tank, 11, first liquid discharge port, 12, second liquid discharge port, 13, third liquid discharge port, 14, exhaust pipe, 15, first air inlet end, 16, nozzle gradually contracting section, 17, nozzle throat, 18, nozzle gradually expanding section, 19, nozzle small diameter straight section, 20, first air outlet end, 21, second air inlet end, 22, spoiler column, 23, second air outlet end, 24, first support plate, 25, swirl tube air inlet section, 26, swirl tube separation section, 27, swirl blade, 28, gap, 29, second support plate, 30, exhaust port. DETAILED DESCRIPTION

[0021] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships for simplified description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] Figure 1 Schematic diagram of the external outline of the air purification and impurity removal device of the present invention, Figure 2 is an internal cross-sectional view of the air purification and impurity removal device of the present invention; see Figure 1-2 The air purification and impurity removal device of the present invention comprises a box shell, on which an air intake port 1 and an air exhaust port 30 are arranged. The air purification and impurity removal device uses a vacuum pump inside the box shell to inhale air from the air intake port 1, and discharges air from the air exhaust port 30 after purification, dehumidification and impurity removal. A lower layer space for accommodating a liquid collecting tank 10 is formed by a partition under the box shell. The liquid collecting tank 10 is used to collect moisture discharged from the internal components above the partition. Figure 2The box shell is provided with a gas path in series of a throttling nozzle 2, a turbulent flow agglomerator 3, a cyclone separation component, a vacuum pump 9, and an exhaust pipe 14. The air inlet end of the throttling nozzle 2 is connected with the air inlet 1. The throttling nozzle 2 throttles and increases the speed of the inhaled gas, and at the same time reduces the pressure and temperature to condense the moisture in the gas. The air outlet end of the throttling nozzle 2 is connected with the air inlet end of the turbulent flow agglomerator 3. The air outlet end of the turbulent flow agglomerator 3 is connected with the cyclone separation component through a pipeline. After the cyclone separation of the cyclone separation component and the subsequent filtration of the filter membrane 8 or the filter element, the filter membrane 8 can be selected as a polytetrafluoroethylene air filter membrane, for example, the purified gas enters the vacuum pump 9 and is then discharged from the exhaust port 30 through the exhaust pipe 14. The condensed moisture and the large-size impurities agglomerated and grown by the turbulent flow agglomerator 3 are separated by the centrifugal separation effect of the multiple cyclone tubes arranged side by side in the cyclone separation component, and then the preliminarily purified air is further purified by the filter membrane 8 and discharged as dry and pure air.

[0025] See also Figure 2 , a closed space for installing the cyclone separation component and the filter membrane is formed by a partition inside the box shell of the air purification and impurity removal device, and a plurality of drain ports are arranged at the lower part of the closed space, and at least one drain port is arranged in front of the filter membrane 8, and at least one drain port is arranged behind the filter membrane 8. In this embodiment, a situation in which a total of three drain ports, namely a first drain port 11, a second drain port 12, and a third drain port 13, are arranged is shown. The lower part of the drain port is connected to a collecting tank 10 for discharging condensed water and flushing water to the collecting tank 10. The collecting tank 10 adopts a detachable extractable structure, and a sealing strip is installed in the contact gap between the upper surface of the collecting tank 10 and the box shell. In some embodiments, the plurality of drain ports are provided with a pipe section extending toward the collecting tank 10 below, and a one-way valve is arranged at the bottom flow port of the pipe section. After water gradually accumulates in the pipe section and blocks the suction effect of the vacuum pump on the valve core of the one-way valve, the one-way valve is opened, and the accumulated water entrains the impurity particles and is discharged into the collecting tank 10, and then the one-way valve is closed again.

[0026] Figure 3 It is a schematic diagram of the throttling nozzle structure of the air purification and impurity removal device of the present invention. As shown in the figure, the internal flow channel of the throttling nozzle 2 includes a nozzle large diameter straight section, a nozzle tapering section 16, a nozzle expanding section 18, and a nozzle small diameter straight section 19 connected in sequence. The nozzle large diameter straight section is provided with a first air inlet end 15 away from the nozzle tapering section 16. The first air inlet end 15 is fixedly connected to the air intake port 1 for air to enter the air purification and impurity removal device. The nozzle tapering section 16 and the nozzle expanding section 18 are connected through a nozzle throat 17. The nozzle throat 17 is the smallest inner diameter portion of the throttling nozzle 2. The end of the nozzle expanding section 18 away from the nozzle tapering section 16 is connected to the nozzle small diameter straight section 19, and the end of the nozzle small diameter straight section 19 away from the nozzle expanding section 18 is provided with a first air outlet end 20.

[0027] The nozzle large diameter straight section and the nozzle small diameter straight section assist in stabilizing the air flow entering and exiting the throttling nozzle 2, see Figure 3 The inner diameter ratio of the nozzle large diameter straight section and the nozzle small diameter straight section is preferably greater than 4, and the reduction of the inner diameter is mainly in the nozzle tapered section 16. The inner surface of the nozzle tapered section 16 is a tapered curved surface with a gradually increasing curvature radius, that is, along the direction from left to right as shown in Figure 3, the curvature radius of the inner diameter curve of the nozzle tapered section 16 gradually increases until it extends to the nozzle throat 17. The ratio of the maximum diameter to the minimum diameter of the nozzle tapered section 16 is greater than 4.2. The air flow is greatly accelerated and cooled by the tapered curved surface with a gradually decreasing curvature, which can maximize the condensation of moisture therein and achieve the effect of air dehumidification.

[0028] In a specific embodiment, the boundary line equation of the inner surface of the nozzle tapered section 16 can be expressed as:

[0029]

[0030] Where: x is the horizontal axis along the central axis and the direction of air flow, with the center of the nozzle convergence section inlet of the throttle nozzle as the origin; y is the vertical axis along the radial direction of the throttle nozzle, which intersects with the x-axis at the origin; is the nozzle throat radius, mm; is the inner radius of the nozzle's major diameter straight section, mm, and L is the length of the nozzle's tapered section, mm.

[0031] The design curve of the nozzle diverging section 18 can adopt the common characteristic line method. Preferably, if the length of the nozzle diverging section 18 is h, h is much smaller than L, and the nozzle diverging section 18 and the portion of the nozzle convergent section 16 adjacent to the nozzle throat 17 with a length of h are arranged symmetrically with respect to the nozzle throat 17.

[0032] See also Figure 4 , Figure 5, are respectively a cross-sectional schematic diagram of the turbulent agglomerator of the air purification and impurity removal device of the present invention and a schematic diagram of the internal structure of the turbulent agglomerator of the air purification and impurity removal device of the present invention. The turbulent agglomerator 3 is a square tube profile structure, the front end of which is set as a second air inlet end 21 connected to the first air outlet end 21 of the throttling nozzle 2, and the rear end of which is set as a second air outlet end 23 connected to the closed space where the cyclone separation component and the filter membrane are installed. The turbulent agglomerator 3 has multiple rows of spoiler columns 22 arranged along the air flow direction. The spoiler columns 22 can be selected from conventional cross-sectional shapes such as cross-shaped, M-shaped, square, T-shaped, etc., or a combination of several of these shapes. The throttling condenses the droplets in the air before the turbulent agglomerator 3, which is similar to the atomization treatment before entering the turbulent agglomerator 3, so that the small-sized impurities are agglomerated into large-sized impurities after passing through the turbulent agglomerator 3, and due to the generation of droplets, the particle agglomeration efficiency is higher, and the liquid-containing air carries the impurities into the cyclone separation component to complete the separation of gas, liquid and impurities.

[0033] Figure 6 It is a schematic diagram of the three-dimensional structure of the cyclone separation component of the air purification and impurity removal device of the present invention. The cyclone separation component is fixed by a first support plate 24 and a second support plate 29 to install multiple axial flow cyclone tubes 5 side by side. Each cyclone tube 5 is composed of a cyclone tube air intake section 25 and a cyclone tube separation section 26. A fixed shaft is coaxially arranged inside the cyclone tube separation section 26. A cyclone blade 27 is installed on the fixed shaft. The cyclone blade 27 swirls the incoming air for centrifugal separation. Preferably, the outer diameter of the contour of the cyclone blade 27 along the axial direction vertical projection is smaller than the inner diameter of the cyclone tube 5, so that a gap 28 is left between the cyclone blade 27 and the inner diameter of the cyclone tube 5, so that the separated droplets and impurity particles can be discharged from the cyclone tube more conveniently.

[0034] In a specific embodiment, the swirl blade 27 can be constructed by the following equation:

[0035]

[0036] Where: x(t), y(t), z(t) are the three-point coordinates of the outer contour of the swirl blade when the center axis of the swirl blade is the z axis, r is the inner diameter of the swirl tube 5, is the length of gap 28, is the angular velocity, v is the velocity along the axis, and t is the motion time.

[0037] See also Figure 2As an important design point of the present invention, a high-pressure rotary nozzle 6 is also installed in the closed space where the cyclone separation component and the filter membrane are installed. The high-pressure rotary nozzle 6 is used to regularly clean the cyclone tube 5 of the cyclone separation component. It is connected to the micro high-pressure water pump 7 in the box shell through a water pipe. The high-pressure water pump 7 draws water from the outside to spray and clean the cyclone tube, and the cleaning water is also discharged to the liquid collection tank 10 through the drain port. The self-cleaning of the air purification and impurity removal device can be achieved by connecting the external water basin only through a thin hose, without disassembly, which is more convenient and simple.

[0038] Although the specific implementation modes of the present invention are described above in conjunction with the accompanying drawings, this does not limit the scope of protection of the present invention. Those skilled in the art should understand that, based on the technical solution of the present invention, various modifications or deformations of equivalent structures or equivalent processes that can be made by those skilled in the art without creative work, or directly or indirectly applied to other related technical fields, are still within the scope of protection of the present invention.

Claims

1. An air purification and impurity removal device, characterized in that: The invention comprises a box shell, wherein the surface of the box shell is provided with an air intake port and an air exhaust port, and the inside of the box shell is provided with a throttling nozzle, a turbulent flow combiner, a cyclone separation component, a vacuum pump and an exhaust pipe, wherein the inlet of the throttling nozzle is installed corresponding to the position of the air intake port, the outlet of the throttling nozzle is connected to the turbulent flow combiner, the outlet of the turbulent flow combiner is connected to the enclosed space in the box shell, the inlet of the vacuum pump is connected to the enclosed space, and the outlet of the vacuum pump is connected to the exhaust port through the exhaust pipe; The cyclone separation assembly is installed in a closed space, and includes a plurality of cyclone tubes arranged side by side. A liquid collecting tank is installed in the box shell below the closed space, and a plurality of liquid discharge ports facing the liquid collecting tank are arranged at the bottom of the closed space. The plurality of liquid discharge ports are all provided with pipe sections extending toward the liquid collecting tank below, and a one-way valve is arranged at the bottom flow port of the pipe section. The internal flow channel of the throttling nozzle comprises a nozzle large diameter straight section, a nozzle tapering section, a nozzle expanding section, and a nozzle small diameter straight section connected in sequence. The nozzle large diameter straight section is provided with a first air inlet end away from the nozzle tapering section. The first air inlet end is fixedly connected to the air intake port for air to enter the air purification and impurity removal device. The nozzle tapering section and the nozzle expanding section are connected through a nozzle throat. The nozzle throat is the part with the smallest inner diameter of the throttling nozzle. The end of the nozzle expanding section away from the nozzle tapering section is connected to the nozzle small diameter straight section. The end of the nozzle small diameter straight section away from the nozzle expanding section is provided with a first air outlet end. The first air outlet end is connected to the turbulent flow combiner. A high-pressure rotating nozzle for flushing the cyclone tube is also installed in the enclosed space, and the high-pressure rotating nozzle is connected to a micro water pump through a pipeline, and the water pump supplies flushing water to the high-pressure rotating nozzle; The inner surface of the nozzle tapered section is a tapered curved surface with a gradually increasing curvature radius, and the boundary line equation of the inner surface is: Where: x is the horizontal axis along the central axis and the direction of air flow, with the center of the nozzle convergence section inlet of the throttle nozzle as the origin; y is the vertical axis along the radial direction of the throttle nozzle, which intersects with the x-axis at the origin; is the nozzle throat radius, mm; is the inner radius of the nozzle's major diameter straight section, mm, L is the length of the nozzle's tapered section, mm; A filter membrane is also installed in the enclosed space, and the filter membrane is located downstream of the cyclone separation component; A plurality of swirl tubes arranged side by side are fixedly installed inside the box shell through a first support plate and a second support plate, and the first support plate and the second support plate restrict the airflow entering the enclosed space to enter from the swirl tube inlet and be discharged from the swirl tube outlet; The swirl tube is of axial flow type.

2. The air purification and impurity removal device according to claim 1 is characterized in that: The length of the nozzle expanding section is much shorter than the length of the nozzle converging section, and the entire nozzle expanding section and the part of the nozzle converging section adjacent to the nozzle throat are arranged in left-right symmetry with respect to the nozzle throat.

3. The air purification and impurity removal device according to claim 1 is characterized in that: The swirl tubes are composed of a swirl tube air inlet section and a swirl tube separation section. The swirl tube air inlet section and the swirl tube separation section are both cylindrical sections, and the diameter of the swirl tube air inlet section is smaller than the diameter of the swirl tube separation section. A fixed shaft is coaxially arranged inside the swirl tube separation section, and swirl blades are installed on the fixed shaft.

4. The air purification and impurity removal device according to claim 3 is characterized in that: The swirl blade is constructed by the following formula: Where: x(t), y(t), z(t) are the three-point coordinates of the outer contour of the swirl blade when the center axis of the swirl blade is the z axis, r is the inner diameter of the swirl tube, is the gap length between the outer diameter of the swirl blade in the axial direction and the inner diameter of the swirl tube, is the angular velocity, v is the velocity along the axis, and t is the motion time.

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