Vertical air filter

Abstract

The vertical air filter comprises a barrel, a filter element assembly, a particle separation chamber and an air guide pipe, the barrel is of a cylindrical structure, an air outlet is formed in the top of the barrel, an air inlet is formed in the side wall of the barrel, and the air inlet direction of the air inlet is tangent to the inner wall of the barrel; the particle separation chamber is arranged in a cavity of the barrel and is in an inverted conical shape, the bottom surface of the particle separation chamber is located below the air inlet and is of an open structure, the air inlet is communicated with the particle separation chamber, and the edge of the bottom surface of the particle separation chamber is in sealed connection with the inner wall of the barrel; a cavity of the barrel body is divided into an upper cavity and a lower cavity; the gas-guide tube is suspended in the upper chamber, one end of the gas-guide tube is connected with the gas outlet, and the other end of the gas-guide tube extends into the particle separation chamber; the filter element assembly is embedded in the gas-guide tube; a separation opening is formed in the vertex of the particle separation chamber, and a dust discharging opening is formed in the bottom of the barrel. According to the scheme, the use cost of a user can be reduced.

Description

Technical Field

[0001] This application relates to the field of engine air filtration, and particularly to a vertical air filter. Background Art

[0002] The engine is the core equipment of power machinery such as automobiles and ships. Its function is to convert the chemical energy of fuel into mechanical energy through combustion, so as to drive various mechanical equipment to operate. The engine works in a cycle of four strokes: intake, compression, power, and exhaust to achieve energy conversion and power output. The cleanliness of the air directly affects the combustion efficiency of the engine. High-cleanliness air helps to maintain the best performance of the engine and extend its service life. For this reason, engines are generally equipped with air filters to ensure the cleanliness of the air.

[0003] However, in a sandy environment, the content of particulate matter in the air is much higher than that in a general environment, which causes the air filter to quickly accumulate a large amount of dust, and the filter element soon reaches a saturated state. Users need to frequently replace and maintain the air filter, which greatly increases the user's usage cost.

[0004] Therefore, in order to reduce the cost of users using the air filter, it is necessary to develop a new type of air filter to solve these problems. Utility Model Content

[0005] The purpose of this application is to provide a vertical air filter, which can reduce the usage cost of users.

[0006] To achieve the above purpose, on the one hand, this application provides a vertical air filter. The vertical air filter includes a cylinder body, a filter element assembly, a particle separation chamber, and an air guide pipe. Among them, the cylinder body is a cylindrical structure. An air outlet is provided at the top of the cylinder body, and an air inlet is provided on the side wall of the cylinder body. The air inlet direction of the air inlet is tangent to the inner wall of the cylinder body. The particle separation chamber is arranged in the cavity of the cylinder body. The particle separation chamber is in an inverted conical shape. The bottom surface of the particle separation chamber is located below the air inlet, and the bottom surface of the particle separation chamber is an open structure. The air inlet is connected to the particle separation chamber. The edge of the bottom surface of the particle separation chamber is hermetically connected to the inner wall of the cylinder body to divide the cavity of the cylinder body into an upper chamber and a lower chamber. The air guide pipe is suspended in the upper chamber, and one end of the air guide pipe is connected to the air outlet, and the other end of the air guide pipe extends into the particle separation chamber to connect the air outlet and the particle separation chamber. The filter element assembly is embedded in the air guide pipe. A separation port is provided at the vertex of the particle separation chamber, a dust discharge port is provided at the bottom of the cylinder body, the upper chamber and the lower chamber are connected through the separation port, and the dust discharge port is connected to the lower chamber.

[0007] Further, a spiral groove is provided on the inner wall of the side wall of the particle separation chamber, and the spiral groove spirally extends from the bottom edge of the particle separation chamber towards the vertex of the particle separation chamber.

[0008] Further, the filter element assembly includes a plurality of frame layers and a plurality of filter paper layers. The cross-sectional shapes of the frame layers and the filter paper layers are adapted to the cross-sectional shape of the air guide tube, and one filter paper layer is provided between any two of the frame layers.

[0009] Further, the frame layer is a metal frame layer, and the particle separation chamber is made of a metal material.

[0010] Further, the cross-sectional shape of the air guide tube is cylindrical, and the central axis of the air guide tube coincides with the central axis of the particle separation chamber.

[0011] Further, a plurality of support arms are provided in the cavity of the cylinder body. One end of each support arm is connected to the inner wall of the cylinder body, and the other end of each support arm is connected to the side wall of the particle separation chamber to limit the particle separation chamber at a specified position within the cylinder body.

[0012] Further, the cylinder body includes an upper cylinder body and a lower cylinder body. The upper cylinder body and the lower cylinder body are connected by threads; the air outlet and the air inlet are provided on the upper cylinder body, and the dust discharge port is provided on the lower cylinder body.

[0013] Further, the vertical air filter further includes a transition pipe. The transition pipe is a long-radius elbow pipe. The transition pipe is provided outside the cylinder body, and one end of the transition pipe is movably sleeved on the air outlet.

[0014] Further, the upper cylinder body is made of a metal material, and a plurality of corrugated indentation structures are formed on the outer surface of the upper cylinder body by an extrusion process.

[0015] It can be seen that the solution provided by this application, the air filter is composed of a cylinder body, a filter element assembly, a particle separation chamber and a gas guide pipe. The cylinder body is placed vertically, and the particle separation chamber is arranged in an inverted conical shape in the cavity of the cylinder body and is connected to the air inlet of the cylinder body. The particle separation chamber divides the cavity of the cylinder body into an upper chamber and a lower chamber, and the air inlet direction of the air inlet is tangent to the inner wall of the upper chamber. In this way, when the outside air enters the upper chamber through the air inlet, the air will rotate along the inner wall of the upper chamber. When the air rotates, the heavy components in the air (such as solid particles such as sand particles and coal dust) are thrown to the inner wall of the upper chamber due to the action of a large centrifugal force and slide down to the bottom of the particle separation chamber under the action of their own gravity, while the light components (such as gas) tend to the center of the upper chamber due to the action of a small centrifugal force, and then form an upward air flow. Since the gas guide pipe is suspended in the upper chamber, one end of the gas guide pipe is connected to the air outlet, and a filter element assembly is embedded in the gas guide pipe, so the upward air flow will enter the gas guide pipe and flow out from the air outlet after being filtered by the filter element assembly, and finally clean air is obtained. Further, the inverted conical structure of the particle separation chamber makes the air gradually contract towards the central axis of the particle separation chamber during the rotation process, which can increase the rotation speed of the air and thus enhance the centrifugal force. The enhancement of the centrifugal force helps to more effectively separate the heavy components from the light components. At the same time, a separation port is provided at the bottom of the particle separation chamber. When the heavy components such as sand particles and coal dust slide to the bottom of the particle separation chamber, they can fall from the separation port into the lower chamber and then be discharged from the dust discharge port at the bottom of the cylinder body. The solution of this application first uses the particle separation chamber to generate a swirling effect to effectively separate the large particles in the air, and then uses the filter element assembly to perform secondary filtration on the air flow. Thanks to the role of the particle separation chamber, most of the large particles in the air flow entering the filter element assembly have been removed in advance, which can significantly reduce the risk of blockage of the filter element assembly, extend the service life of the filter element assembly, and finally reduce the maintenance frequency of the air filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 is a perspective view of a vertical air filter with a transfer pipe in an embodiment provided by this application;

[0018] Figure 2 is a perspective view of the structure of a vertical air filter without a transfer pipe in an embodiment provided by this application;

[0019] Figure 3It is a three-dimensional structure diagram of another perspective of a vertical air filter without a transfer pipe provided in an embodiment of the present application;

[0020] Figure 4 It is a cross-sectional view of a vertical air filter provided in an embodiment of the present application. Detailed implementation manners

[0021] To make the objectives, technical solutions, and advantages of the present application clearer, the following will further describe the embodiments of the present application in detail with reference to the accompanying drawings. Terms such as "upper", "above", "lower", "below", "first end", "second end", "one end", "the other end", etc., which represent relative spatial positions used in the present application, are for the purpose of facilitating description of the relationship between one unit or feature and another unit or feature as shown in the accompanying drawings. The terms of relative spatial positions may be intended to include different orientations of the device in use or operation other than the orientation shown in the figures. For example, if the device in the figure is flipped, the unit described as being "below" or "beneath" other units or features will be located "above" other units or features. Therefore, the exemplary term "below" can encompass both the upper and lower orientations. The device can be oriented in other ways (rotated 90 degrees or other orientations), and the spatially related descriptive terms used herein can be interpreted accordingly.

[0022] In addition, terms such as "installed", "set", "provided with", "connected", "slidingly connected", "fixed", "socketed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there can be internal communication between two devices, components, or parts. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0023] The engine is the core equipment of power machinery such as automobiles and ships. Its function is to convert the chemical energy of fuel into mechanical energy through combustion, so as to drive various mechanical equipment to operate. The engine works in a cycle of four strokes: intake, compression, power, and exhaust to achieve energy conversion and power output. Fuel combustion requires air. If the air contains a large amount of impurities such as dust and dirt, it may hinder the full mixing of fuel and air, resulting in incomplete fuel combustion, thereby reducing the power output and fuel efficiency of the engine. At the same time, these impurities will cause wear to the internal components of the engine, such as pistons, valves, cylinder walls, etc., shortening the service life of the engine. Obviously, the cleanliness of the air directly affects the combustion efficiency and service life of the engine. High-cleanliness air helps to maintain the best performance of the engine and extend its service life. For this reason, air filters are generally equipped on engines to ensure the cleanliness of the air.

[0024] However, in a dusty environment, the particulate matter content in the air is much higher than that in a general environment. These particulate matters can penetrate the filter layer of the air filter and accumulate on the filter element. When the accumulated dusty particulate matters on the filter element reach a certain level, the filtering effect of the filter element will significantly decline or even completely lose the filtering effect. At this time, the filter element needs to be replaced; otherwise, it will affect the performance and lifespan of the engine. Due to the higher content of particulate matters in the dusty environment, the accumulated dusty particulate matters on the filter element will reach the saturation state faster, so users need to replace and maintain the air filter more frequently, which greatly increases the user's usage cost.

[0025] Therefore, how to improve the structure of the air filter to reduce the user's usage cost has become an urgent issue to be solved in this field.

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those skilled in the art without creative efforts based on the embodiments in the present application belong to the scope protected by the present application.

[0027] Please refer to Figures 1 to 4 together. The present application provides a vertical air filter, which is vertically installed in the engine compartment and close to the engine intake duct. The air inlet of the vertical air filter is connected to the outside air, and the air outlet of the air filter is connected to the intake manifold of the engine. It is mainly used to filter the air entering the engine.

[0028] In an implementable embodiment, the above-mentioned vertical air filter includes a cylinder body 1, a filter element assembly 2, a particle separation chamber 3, and an air duct 4. The cylinder body 1 is configured as a cylindrical structure. An air outlet 11 is provided at the top of the cylinder body 1, and the air outlet 11 is connected to the intake manifold of the engine. An air inlet 12 is provided on the side wall of the cylinder body 1, and the air inlet 12 is connected to the outside air, and the air inlet direction of the air inlet 12 is tangent to the inner wall of the cylinder body 1. In other words, since the vertical air filter is vertically installed in the engine compartment, the air intake of the above-mentioned vertical air filter is tangential, which means that the direction of the outside air flowing in is consistent with the tangent direction of the inner wall of the cylinder body 1. The above design makes the outside air start to rotate along the inner wall of the cylinder body 1 immediately after entering the inside of the cylinder body 1.

[0029] The particle separation chamber 3 is disposed in the cavity of the cylinder body 1. The particle separation chamber 3 is in an inverted conical shape, and the bottom surface 31 of the particle separation chamber 3 is located below the air inlet 12. The bottom surface 31 of the particle separation chamber 3 is an open structure, and the air inlet 12 is connected to the particle separation chamber 3, so that when air enters the interior of the cylinder body 1 from the air inlet 12, the above-mentioned air can enter the interior of the particle separation chamber 3 through the bottom surface 31 of the particle separation chamber 3. Further, the edge of the bottom surface 31 of the particle separation chamber 3 is hermetically connected to the inner wall of the cylinder body 1 to divide the cavity of the cylinder body 1 into an upper chamber 13 and a lower chamber 14. It should be noted that the bottom surface 31 of the particle separation chamber 3 can be regarded as the bottom surface of a virtual inverted cone. The bottom surface 31 of the particle separation chamber 3 does not physically exist, but serves as a reference point or a conceptual boundary.

[0030] Since the inner wall of the particle separation chamber 3 is joined to the inner wall of the cylinder body 1, when external air enters the interior of the cylinder body 1 and rotates along the inner wall of the cylinder body 1, the above-mentioned air will further rotate along the inner wall of the particle separation chamber 3. The inverted conical structure of the particle separation chamber 3 causes the fluid to gradually contract towards the central axis of the particle separation chamber 3 during rotation, which can increase the rotation speed of the fluid, thereby enhancing the centrifugal force. Under the action of the centrifugal force, heavy components such as sand particles and coal dust mixed in the air will be thrown towards the inner wall of the particle separation chamber 3 and move downward under the action of their own gravity to the bottom of the particle separation chamber 3, so that large particles such as sand particles and coal dust in the air are separated. At the same time, light components such as gas in the air tend to the central axis of the particle separation chamber 3 due to the smaller centrifugal force, and then form an air flow rising along the central axis of the particle separation chamber 3.

[0031] The air duct 4 is suspended in the upper chamber 13, and one end of the air duct 4 is connected to the air outlet 11. The other end of the air duct 4 passes through the bottom surface 31 of the particle separation chamber 3 and extends into the internal space of the particle separation chamber 3. When the air flow rises along the central axis of the particle separation chamber 3, the above-mentioned air flow can enter the air duct 4. Since the filter element assembly 2 is embedded in the air duct 4, when the air flow enters the air duct 4, it can be further filtered by the filter element assembly 2, thereby further improving the cleanliness of the air flow.

[0032] At the vertex of the particle separation chamber 3, a separation port 32 is provided. At the bottom of the cylinder body 1, a dust discharge port 15 is provided. The upper chamber 13 and the lower chamber 14 are connected through the separation port 32, and the dust discharge port 15 is connected to the lower chamber 14. When the large particles slide to the bottom of the particle separation chamber 3 under the action of their own gravity, the above-mentioned large particles will fall into the lower chamber 14 through the separation port 32. The lower chamber 14 can play a role in storing large particles. When the large particles in the lower chamber 14 are stored to a certain volume, the user can use a negative pressure device such as a vacuum cleaner to extract the above-mentioned large particles from the lower chamber 14 through the dust discharge port 15 to prevent the large particles from accumulating excessively in the lower chamber 14.

[0033] In an achievable embodiment, a spiral groove is provided on the inner wall of the side wall 33 of the particle separation chamber 3, and the spiral groove spirally extends from the edge of the bottom surface 31 of the particle separation chamber 3 towards the vertex of the particle separation chamber 3 (i.e., the separation port 32). The above-mentioned spiral groove can promote the air to form a more compact rotational flow inside the particle separation chamber 3 and guide the large particles to move along a spiral trajectory towards the separation port 32 of the particle separation chamber 3, so that the large particles can be more effectively separated and collected.

[0034] In an achievable embodiment, the filter element assembly 2 includes a plurality of frame layers 21 and a plurality of filter paper layers 22. The cross-sectional shapes of the frame layer 21 and the filter paper layer 22 are adapted to the cross-sectional shape of the air duct 4 to facilitate the assembly of the filter element assembly 2 in the air duct 4. The frame layer 21 and the filter paper layer 22 are arranged alternately. The filter paper layer 22 can effectively capture and filter the fine particles in the air, and the frame layer 21 can provide a support structure to prevent the filter paper layer 22 from deforming due to pressure during the filtering process. At the same time, the multi-layer structure design can also increase the filtering area of the filter paper layer 22, ultimately improving the filtering effect of the filter element assembly 2. The filter element assembly 2 can further capture and filter the fine particles in the air, thereby improving the cleanliness of the air entering the intake manifold.

[0035] It should be noted that the particle separation chamber 3 first separates the large particles from the air by the swirl effect, and the filter element assembly 2 further filters the fine particles in the air. Since the particle separation chamber 3 first separates the large particles, the load on the filter element assembly 2 will be reduced, and the service life of the filter element assembly 2 will be extended. The filter element assembly 2 and the particle separation chamber 3 cooperate with each other, which can reduce the need for frequent replacement of the filter element assembly 2 and reduce the maintenance cost of the air filter.

[0036] Optionally, the frame layer 21 is a metal frame layer, and the particle separation chamber 3 is made of metal material to enhance the stability and reliability of the filter element assembly 2 and the particle separation chamber 3 in a complex working environment.

[0037] Optionally, the cross-sectional shape of the air duct 4 is cylindrical, and the centerline of the air duct 4 coincides with the centerline of the particle separation chamber 3. The cylindrical air duct 4, whose centerline coincides with the centerline of the particle separation chamber 3, can simplify the air flow path, reduce energy loss during the flow process, and improve air flow efficiency. At the same time, the centerline of the air duct 4 coincides with the centerline of the particle separation chamber 3, and can also ensure that the rising airflow generated by the particle separation chamber 3 can be effectively transferred to the air duct 4, thereby improving the performance of the entire filtration system. The overlapping centerline design also helps to reduce noise and vibration during the air flow process and improve the operational stability of the system.

[0038] In one feasible embodiment, a plurality of support arms 16 are disposed within the cavity of the cylinder 1. One end of each support arm 16 is connected to the inner wall of the cylinder 1, and the other end of each support arm 16 is connected to the sidewall 33 of the particle separation chamber 3. The support arms 16 are strip-shaped and provide support for the sidewall 33 of the particle separation chamber 3 to prevent the sidewall 33 of the particle separation chamber 3 from shaking under the impact of the airflow. Furthermore, the support arms 16 can also confine the particle separation chamber 3 to a specified position within the cylinder 1. For example, the support arms 16 are configured to confine the centerline of the particle separation chamber 3 to coincide with the centerline of the air duct 4.

[0039] Optionally, the cylinder 1 is composed of an upper cylinder 17 and a lower cylinder 18, wherein the upper cylinder 17 and the lower cylinder 18 are connected together by threads to facilitate the user to disassemble and repair the cylinder 1. The air outlet 11 and the air inlet 12 are provided on the upper cylinder 17, and the dust exhaust port 15 is provided on the lower cylinder 18.

[0040] In one feasible embodiment, the vertical air filter further includes an adapter tube 5, which is a long-radius elbow. The adapter tube 5 is disposed outside the housing 1, with one end flexibly sleeved over the air outlet 11 and the other end connected to the engine's intake manifold. The adapter tube 5 can rotate around the air outlet 11, allowing the user to adjust the angle of rotation to accommodate different installation positions of the vertical air filter within the engine compartment, thereby facilitating connection between the air outlet 11 and the engine's intake manifold.

[0041] Optionally, the upper cylinder 17 can be constructed of metal to accommodate the high temperatures experienced within the engine compartment and to protect it from damage caused by frequent impacts with large particles. Furthermore, since the air filter generates significant vibration during operation, the upper cylinder 17 is subjected to significant stress and is susceptible to fatigue damage. Therefore, a stamping and stretching process can be used to form a number of corrugated indentations on the outer surface of the upper cylinder 17 to increase its rigidity and strength, making it less susceptible to deformation when subjected to external pressure or vibration.

[0042] As can be seen, in the solution provided by this application, the air filter is composed of a cylinder body, a filter element assembly, a particle separation chamber, and an air guide pipe. The cylinder body is placed vertically, and the particle separation chamber is arranged in an inverted conical shape in the cavity of the cylinder body and is connected to the air inlet of the cylinder body. The particle separation chamber divides the cavity of the cylinder body into an upper chamber and a lower chamber. The air inlet direction of the air inlet is tangent to the inner wall of the upper chamber. In this way, when the outside air enters the upper chamber through the air inlet, the air will rotate along the inner wall of the upper chamber. When the air rotates, the heavy components in the air (such as solid particles like sand particles and coal dust) are thrown towards the inner wall of the upper chamber due to the action of a larger centrifugal force and slide down to the bottom of the particle separation chamber under the action of their own gravity, while the light components (such as gas) tend to the center of the upper chamber due to the action of a smaller centrifugal force and then form an upward air flow. Since the air guide pipe is suspended in the upper chamber, one end of the air guide pipe is connected to the air outlet, and the filter element assembly is embedded in the air guide pipe. Therefore, the upward air flow will enter the air guide pipe and flow out from the air outlet after being filtered by the filter element assembly, and finally clean air is obtained. Further, the inverted conical structure of the particle separation chamber makes the air gradually contract towards the central axis of the particle separation chamber during the rotation process, which can increase the rotation speed of the air and thus enhance the centrifugal force. The enhancement of the centrifugal force helps to more effectively separate the heavy components from the light components. At the same time, a separation port is provided at the bottom of the particle separation chamber. When the heavy components such as sand particles and coal dust slide to the bottom of the particle separation chamber, they can fall from the separation port into the lower chamber and then be discharged from the dust discharge port at the bottom of the cylinder body. In the solution of this application, first, the particle separation chamber is used to generate a swirling effect to effectively separate the large particles in the air, and then the filter element assembly is used to perform secondary filtration on the air flow. Thanks to the role of the particle separation chamber, most of the large particles in the air flow entering the filter element assembly have been removed in advance, which can significantly reduce the risk of blockage of the filter element assembly, extend the service life of the filter element assembly, and finally reduce the maintenance frequency of the air filter.

[0043] The above are only the preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of this application shall be included in the protection scope of this application.

Claims

1. A vertical air filter, characterized in that: The vertical air filter includes a cylinder, a filter element assembly, a particle separation chamber and an air duct, wherein: The cylinder is a cylindrical structure, an air outlet is provided on the top of the cylinder, and an air inlet is provided on the side wall of the cylinder, and the air inlet direction of the air inlet is tangent to the inner wall of the cylinder; The particle separation chamber is disposed in the cavity of the cylinder, the particle separation chamber is in an inverted cone shape, the bottom surface of the particle separation chamber is located below the air inlet, and the bottom surface of the particle separation chamber is an open structure, the air inlet is communicated with the particle separation chamber, and the bottom edge of the particle separation chamber is sealedly connected to the inner wall of the cylinder to divide the cavity of the cylinder into an upper chamber and a lower chamber; The air duct is suspended in the upper chamber, and one end of the air duct is connected to the air outlet, and the other end of the air duct extends into the particle separation chamber to connect the air outlet with the particle separation chamber, and the filter element assembly is embedded in the air duct; A separation port is provided at the apex of the particle separation chamber, a dust discharge port is provided at the bottom of the cylinder, the upper chamber and the lower chamber are communicated through the separation port, and the dust discharge port is communicated with the lower chamber.

2. The vertical air filter according to claim 1, characterized in that: A spiral groove is provided on the inner wall of the side wall of the particle separation chamber, and the spiral groove spirally extends from the edge of the bottom surface of the particle separation chamber to the vertex of the particle separation chamber.

3. The vertical air filter according to claim 2, characterized in that: The filter element assembly includes multiple frame layers and multiple filter paper layers. The cross-sectional shapes of the frame layers and the filter paper layers are adapted to the cross-sectional shape of the air duct, and one filter paper layer is arranged between any two frame layers.

4. The vertical air filter according to claim 3, characterized in that: The frame layer is a metal frame layer, and the particle separation chamber is constructed of metal materials.

5. The vertical air filter according to claim 4, characterized in that: The cross-section of the air guide tube is cylindrical, and a center line of the air guide tube coincides with a center line of the particle separation chamber.

6. The vertical air filter according to claim 5, characterized in that: A plurality of support arms are provided in the cavity of the cylinder, one end of each support arm is connected to the inner wall of the cylinder, and the other end of each support arm is connected to the side wall of the particle separation chamber to limit the particle separation chamber to a specified position within the cylinder.

7. The vertical air filter according to claim 1, characterized in that: The cylinder includes an upper cylinder and a lower cylinder, wherein: The upper cylinder and the lower cylinder are threadedly connected; The air outlet and the air inlet are arranged on the upper cylinder, and the dust exhaust port is arranged on the lower cylinder.

8. The vertical air filter according to claim 7, characterized in that: The vertical air filter further comprises a transfer tube, which is a long radius elbow. The transfer tube is arranged outside the cylinder, and one end of the transfer tube is movably sleeved on the air outlet.

9. The vertical air filter according to claim 8, characterized in that: The upper cylinder is made of metal material, and a plurality of wave-shaped indentation structures are formed on the outer surface of the upper cylinder through an extrusion process.

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