Inlet air filter of nitrogen compressor

Abstract

The utility model provides an air inlet filter of a nitrogen compressor, and belongs to the field of nitrogen compression. The problem that a traditional filter is difficult to balance the air inflow, the rotating speed and the filtering effect, so that the filtering efficiency and the filtering effect become poor is solved. The device comprises a filtering assembly, a plurality of filtering parts are detachably connected to the filtering assembly, and the outlet end is used for being connected with external equipment or air; the air inlet separation assembly is rotationally connected to the inlet end of the connecting assembly; the driving assembly is connected with the air inlet separation assembly and used for driving the air inlet separation assembly to rotate; wherein the air inlet separation assembly comprises a rotating shell, an air inlet channel, a flow dividing part, blades, a weight reduction air inlet part and a separation air outlet end, the rotating shell is used for pushing air into the rotating shell in the radial direction during rotation, and the rotating shell is provided with the blades used for forming airflow flowing from the weight reduction air inlet part to the separation air outlet end during rotation; and the flow dividing part is used for separating large particles in the airflow. The device is mainly used for nitrogen filtration.

Description

Technical Field

[0001] This utility model belongs to the field of nitrogen compression, and in particular relates to a nitrogen compressor inlet filter. Background Technology

[0002] Filtration of the intake air is a crucial step in the nitrogen compression process. Traditional filters have numerous problems in practical applications, severely impacting the overall performance and operating efficiency of the nitrogen compression system.

[0003] Traditional filters struggle to strike a balance between rotational speed and separation efficiency. Improving separation efficiency typically requires increasing the filter's rotational speed. However, this leads to a significant increase in power consumption, and the excessive airflow from the increased speed can cause dust to escape again. Conversely, reducing the rotational speed lowers power consumption, but this reduces separation efficiency. This contradiction makes it difficult for traditional filters to find their optimal operating state in practical applications, failing to simultaneously meet the requirements of high efficiency and low power consumption.

[0004] Particulate matter easily damages the filter screens of traditional filters. As airborne particles pass through the filter, they impact and wear down the screen. Larger particles, in particular, can create scratches and holes, reducing filtration performance and even causing leaks. This not only affects filtration efficiency but can also allow impurities to enter the compressor, causing wear on critical components such as pistons and cylinders, shortening the compressor's lifespan, and increasing maintenance costs and repair frequency. Traditional methods for separating large particles mostly use baffles to separate gas and particulate matter. However, baffles experience high wear, and this method is difficult to use at high speeds. Under limited speed and airflow conditions, it's difficult to improve filtration efficiency and ensure separation effectiveness, while also resulting in significant airflow loss. Summary of the Invention

[0005] In view of this, the present invention aims to propose a nitrogen compressor intake filter to solve the problem that traditional filters are unable to balance intake volume, speed and filtration effect, resulting in poor filtration efficiency and effect.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a nitrogen compressor inlet filter, comprising:

[0007] The filter assembly has several filter sections that are detachably connected to it. The inlet end is detachably connected to the outlet end of the connecting assembly. The outlet end is used to connect to external equipment or to the air.

[0008] The intake separator assembly is rotatably connected to the inlet end of the connecting assembly;

[0009] A drive assembly, connected to the intake separation assembly, is used to drive the intake separation assembly to rotate;

[0010] The air intake separation assembly includes a rotating housing, an air intake duct, a flow divider, blades, a weight-reducing air intake duct, and a separation outlet. The rotating housing has several air intake ducts arranged around its periphery to push gas radially into the housing during rotation. The rotating housing has several weight-reducing air intake ducts and a separation outlet on its two axially opposite end faces. The separation outlet is connected to the inlet end of the connecting assembly. The rotating housing has several blades on its inner wall to form an airflow from the weight-reducing air intake duct to the separation outlet during rotation. The flow divider is coaxially arranged inside the rotating housing to separate large particles in the airflow.

[0011] Furthermore, the diverter section is generally truncated conical in shape, with the radius gradually increasing from the weight-reducing air intake section to the separation air outlet side.

[0012] Furthermore, the rotating outer shell is a conical hollow rotating body with the radius gradually decreasing from the weight-reducing air intake to the separation air outlet.

[0013] Furthermore, the blade is connected to the inner wall of the rotating housing, which is provided with a weight-reducing air intake, and cooperates with the flow divider to divide the interior of the rotating housing into several separation chambers. Each separation chamber is connected to at least one air intake and at least one weight-reducing air intake. Each separation chamber is connected to the separation outlet.

[0014] Furthermore, the angle of attack of the windward surface when the air intake rotates is 30-60 degrees.

[0015] Furthermore, the filter assembly also includes a filter housing and an insert, wherein the filter housing is provided with a plurality of inserts for connecting each of the filter units.

[0016] Furthermore, the filtration section includes, but is not limited to, a plurality of filtration units with progressively decreasing filtration diameters, a drying unit, a disinfection unit, and / or a noise reduction unit.

[0017] Furthermore, the connecting assembly also includes a support portion, with the connecting inlet end and the connecting outlet end disposed on two opposite sides of the support portion.

[0018] Furthermore, the drive assembly includes a drive motor and a transmission assembly, wherein the drive motor is connected to the rotating housing via the transmission assembly.

[0019] Furthermore, the transmission assembly includes a pulley and a driven pulley. The pulley is connected to the rotating end of the drive motor, and the driven pulley is connected to the rotating housing. The pulley and the driven pulley are connected by a belt.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. This device is equipped with a rotating air intake separation component, which allows the rotating air intake channel to move relative to the gas, thereby introducing the gas into the air intake separation component. At the same time, the rotating blades inside create a gas flow, allowing another part of the gas to enter through the weight reduction air intake section. The two gas flows increase the air intake volume under the same rotation speed, improving the filtration efficiency without increasing the rotation speed, and preventing secondary escape of particles due to excessive flow velocity.

[0022] 2. This device forms a separation chamber by setting up a flow divider and blades together. Large particles in the airflow will have a downward separation tendency due to the overall rotation of the blades and air intake separation components and the collision of the blades. As they move downward, they will be separated and discharged through the air intake duct that has moved to the lower part. Thus, under the premise of rotation and large air intake volume, the separation of large particles is completed without causing air loss, thereby improving the overall filtration efficiency.

[0023] 3. The flow divider in this device can, to a certain extent, create a separation tendency between particles and gas. By narrowing the flow divider in conjunction with the rotating shell, the gas pressure and flow rate can be increased. At the same time, the solid throwing effect formed by the flow divider and the centrifugal effect formed by the rotating shell can improve the fixed separation efficiency. Attached Figure Description

[0024] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0025] Figure 1 This is a first-view perspective three-dimensional structural diagram of a nitrogen compressor inlet filter according to the present invention;

[0026] Figure 2 This is a second-view perspective three-dimensional structural diagram of a nitrogen compressor inlet filter according to the present invention;

[0027] Figure 3 This is a top view of a nitrogen compressor inlet filter according to the present invention;

[0028] Figure 4 The present utility model Figure 3 Sectional view along axis AA;

[0029] Figure 5 The present utility model Figure 3 BB-direction sectional view;

[0030] Figure 6 This is a top view of the air intake separation assembly described in this utility model;

[0031] Figure 7 The present utility model Figure 6 CC-direction sectional view.

[0032] Filter assembly 1; filter housing 1-1; embedding part 1-2; filter part 1-3; connecting assembly 2; connecting inlet end 2-1; support part 2-2; connecting outlet end 2-3; drive assembly 3; drive motor 3-1; pulley 3-2; transmission assembly 3-3; passive pulley 3-4; air intake separation assembly 4; rotating housing 4-1; air intake duct 4-2; flow divider 4-3; blade 4-4; weight reduction air intake 4-5; separated air outlet end 4-6. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present utility model can be combined with each other, and the described embodiments are only some embodiments of the present utility model, not all embodiments.

[0034] It should be noted that the descriptions of "left," "right," "left side," "right side," "upper part," "lower part," "top," and "bottom" in this utility model are defined based on the orientation or positional relationships shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and are not intended to indicate or imply that the described structure must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0035] In the description of this utility model, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] Referring to the accompanying drawings, this embodiment describes a nitrogen compressor inlet filter, comprising:

[0037] The filter assembly 1 has several filter parts 1-3 detachably connected to it. The inlet end is detachably connected to the outlet end 2-3 of the connecting assembly 2. The outlet end is used to connect to external equipment or to the air. The filter assembly 1 also includes a filter shell 1-1 and an insert 1-2. The filter shell 1-1 is provided with several inserts 1-2 for connecting each of the filter parts 1-3. The filter housing 1-1 is a box-type housing. The material of the housing can be reasonably selected according to the placement position and usage environment. It is mainly to provide support for the filter part 1-3. In order to improve the efficiency of disassembly and assembly, several embedding parts 1-2 are opened on the top wall or side wall of the filter housing 1-1 to provide space for the filter part 1-3 to engage. Specifically, the embedding part 1-2 is a slot with a shape and size adapted to the filter part 1-3. After the filter part 1-3 is inserted, an engaging structure is set at the corresponding position to lock the filter part 1-3. For example, protrusions are set at corresponding positions on the filter part 1-3 and the filter housing 1-1 so that the protrusions cooperate with each other to complete the locking. When the filter part 1-3 is pulled outward, the protrusion will undergo a slight deformation to release the locking state. Of course, other engaging structures that can cooperate and lock can also be used according to actual needs. The structure that is conducive to disassembly and locking can be used in this application and is within the spirit of the invention of this application.

[0038] In this embodiment, the filter units 1-3 include, but are not limited to, a plurality of filter units with progressively decreasing filter diameters, a drying unit, a sterilization unit, and / or a noise reduction unit. After passing through these units, the impact on subsequent compression units can be reduced, for example, the impact on nitrogen compression components can be reduced, and the quality of nitrogen can be improved.

[0039] The intake separator 4 is rotatably connected to the inlet end of the connecting assembly 2. The rotatable design of the intake separator 4 is primarily to generate centrifugal force during rotation, which helps separate large particles and increase the intake volume during the stroke. This results in better intake performance and separation efficiency at the same rotational speed, thus improving overall efficiency. The connecting assembly 2 mainly serves as a connection and support in the middle. Its detachable structure improves the convenience of disassembly and maintenance, reducing downtime for repairs.

[0040] Drive component 3 is connected to intake separation component 4 and is used to drive intake separation component 4 to rotate;

[0041] The air intake separation assembly 4 includes a rotating housing 4-1, an air intake duct 4-2, a flow divider 4-3, blades 4-4, a weight-reducing air intake 4-5, and a separation outlet 4-6. The rotating housing 4-1 has several air intake ducts 4-2 arranged around its periphery to push gas radially into the rotating housing 4-1 during rotation. The rotating housing 4-1 has several weight-reducing air intake ducts 4-5 and separation outlets 4-6 arranged on two opposite end faces along the axial direction. The separation outlet 4-6 is connected to the inlet end 2-1 of the connecting assembly 2. The inner wall of the rotating housing 4-1 has several blades 4-4 arranged to form an airflow from the weight-reducing air intake 4-5 to the separation outlet 4-6 during rotation. The flow divider 4-3 is coaxially arranged inside the rotating housing 4-1 to separate large particles in the airflow. The rotating outer shell 4-1 is specifically designed as a hollow rotating body. During rotation, the relative motion between the air intake 4-2 and the gas, along with its own angle of attack, draws the gas radially into the rotating outer shell 4-1. The internal blades 4-4, during rotation, generate axial airflow, which in turn influences the radial airflow, creating a conical converging gas flow throughout the movement. The blades contact the particles during rotation, and the formation of the separation chamber, combined with the centrifugal force generated during rotation, effectively separates the particles and gas. With the help of the separation chamber, the particles are ejected from the downward-facing air intake 4-2, where a particle collection container is located. To improve safety, multiple hanging chains can be installed on both sides of the rotating outer shell 4-1 to prevent particles from injuring people or objects. Furthermore, the formation of the conical gas flow is achieved because the diversion section 4-3 is a truncated cone, with the radius gradually increasing from the weight-reducing air intake 4-5 towards the separation outlet 4-6. The rotating outer shell 4-1 is a conical hollow rotating body with its radius gradually decreasing from the weight-reducing air inlet 4-5 towards the separation outlet 4-6. The diameter of the cavity between the diversion section 4-3 and the inner wall of the rotating outer shell 4-1 gradually decreases towards the separation outlet 4-6, meaning the communication area between this wall and the separation outlet 4-6 gradually decreases, increasing gas pressure and flow rate. Simultaneously, thanks to the conical structure of the diversion section 4-3, during rotation, the conical surface forms a downward-sloping separation angle with the particles, further increasing the downward tendency of the particles under centrifugal force, facilitating gas and particle separation and improving separation efficiency. This design promotes particle and gas separation, ensuring that most particles are separated in the initial stage, minimizing impact on subsequent filtration units and increasing their lifespan. It also reduces the filtration pressure of subsequent filtration units. Without increasing the rotational speed, the structural design increases the air intake and fluid pressure, achieving a balance between energy efficiency and overall efficiency.

[0042] In this embodiment, the blade 4-4 is connected to the inner wall of the rotating housing 4-1, where the weight-reducing air intake 4-5 is located, and cooperates with the flow divider 4-3 to divide the interior of the rotating housing 4-1 into several separation chambers. Each separation chamber is connected to at least one air intake 4-2 and at least one weight-reducing air intake 4-5, and each separation chamber is connected to the separation outlet 4-6. The main function of the separation chamber is to form a separation trajectory, preventing the entering particles from flowing excessively in adjacent chambers, which would reduce the separation efficiency, while ensuring that the particles are effectively discharged.

[0043] In this embodiment, the angle of attack of the windward surface of the air intake 4-2 when it rotates is 30-60 degrees, preferably 45 degrees. This achieves better air intake performance and reduces air intake resistance.

[0044] In this embodiment, the connecting assembly 2 further includes a support portion 2-2, with the connecting inlet end 2-1 and the connecting outlet end 2-3 located on two opposite sides of the support portion 2-2. This ensures that the gas entry and exit process does not reduce fluid pressure, minimizing gas pressure loss. The support portion 2-2 primarily serves a supporting function, providing installation space for the drive motor 3-1. Bolt holes are provided below the support portion 2-2 as needed. During installation, a corresponding steel frame foundation or concrete foundation is constructed, and the motor is secured using anchor bolts.

[0045] In this embodiment, the drive assembly 3 includes a drive motor 3-1 and a transmission assembly 3-3. The drive motor 3-1 is connected to the rotating housing 4-1 via the transmission assembly 3-3. The control means and power supply method of the drive motor 3-1 are arranged reasonably according to the usage scenario.

[0046] In this embodiment, the transmission assembly 3-3 includes a pulley 3-2 and a driven pulley 3-4. The pulley 3-2 is connected to the rotating end of the drive motor 3-1, and the driven pulley 3-4 is connected to the rotating housing 4-1. The pulley 3-2 and the driven pulley 3-4 are connected by a belt. The rotating housing 4-1 is fixedly connected to the driven pulley 3-4. When the drive motor 3-1 operates, it drives the pulley 3-2 to rotate, which in turn drives the driven pulley 3-4 to rotate via a V-belt, thereby causing the rotating housing 4-1 to rotate.

[0047] In use, the drive motor 3-1 rotates, driving the pulley 3-2 to rotate. The pulley 3-2, through the V-belt, drives the driven pulley 3-4 to rotate, which in turn drives the rotating housing 4-1 to rotate. When the rotating housing 4-1 rotates, the blades 4-4 and the air intake duct 4-2 rotate together, forming a converging gas flow. At the same rotation speed, the air intake volume is increased. During rotation, the centrifugal inertia and the synergistic effect of the separation chamber and the diversion section 4-3 help to quickly separate particles and gas, and increase the gas flow rate, so that the gas enters the filter assembly 1 for filtration before being discharged.

[0048] The sensors, controllers, and control programs mentioned above are all existing technologies and will not be elaborated upon.

[0049] The embodiments of the present invention disclosed above are merely illustrative of the present invention. The embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific implementations described. Many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention.

Claims

1. A nitrogen compressor inlet filter, characterized in that, include: The filter assembly (1) has several filter sections (1-3) detachably connected to it. The inlet end is detachably connected to the outlet end (2-3) of the connecting assembly (2). The outlet end is used to connect to external equipment or to the air. The intake separation assembly (4) is rotatably connected to the inlet end of the connecting assembly (2); The drive assembly (3) is connected to the intake separation assembly (4) and is used to drive the intake separation assembly (4) to rotate; The air intake separation assembly (4) includes a rotating housing (4-1), an air intake duct (4-2), a flow divider (4-3), blades (4-4), a weight-reducing air intake duct (4-5), and a separation outlet (4-6). The rotating housing (4-1) is provided with several air intake ducts (4-2) around its periphery, which are used to push the gas radially into the rotating housing (4-1) when rotating. The rotating housing (4-1) is provided with several weight-reducing air intake ducts (4-5) and separation outlets (4-6) on two opposite end faces along the axial direction. The separation outlet (4-6) is connected to the inlet end (2-1) of the connecting assembly (2). The inner wall of the rotating housing (4-1) is provided with several blades (4-4) for forming an airflow from the weight-reducing air intake duct (4-5) to the separation outlet (4-6) when rotating. The flow divider (4-3) is coaxially arranged inside the rotating housing (4-1) for separating large particles in the airflow.

2. The nitrogen compressor inlet filter according to claim 1, characterized in that: The splitter section (4-3) is generally truncated cone-shaped, with the radius gradually increasing from the weight-reducing air intake section (4-5) to the separation air outlet section (4-6).

3. The nitrogen compressor inlet filter according to claim 2, characterized in that: The rotating outer shell (4-1) is a cone-shaped hollow rotating body, with the radius gradually decreasing from the weight-reducing air intake (4-5) to the separation air outlet (4-6).

4. The nitrogen compressor inlet filter according to claim 3, characterized in that: The blade (4-4) is connected to the inner wall of the rotating housing (4-1) which is provided with a weight-reducing air intake (4-5), and cooperates with the flow divider (4-3) to divide the interior of the rotating housing (4-1) into several separation chambers. Each separation chamber is connected to at least one air intake (4-2) and at least one weight-reducing air intake (4-5). Each separation chamber is connected to the separation outlet (4-6).

5. The nitrogen compressor inlet filter according to claim 1, characterized in that: When the air intake (4-2) rotates, the angle of attack of the windward side is 30-60 degrees.

6. A nitrogen compressor inlet filter according to any one of claims 1-5, characterized in that: The filter assembly (1) further includes a filter housing (1-1) and an insert (1-2). The filter housing (1-1) is provided with a plurality of inserts (1-2) for connecting each filter unit (1-3).

7. A nitrogen compressor inlet filter according to claim 6, characterized in that, The filtration section (1-3) includes, but is not limited to: a plurality of filtration units with successively decreasing filtration diameters, a drying unit, a disinfection unit and / or a noise reduction unit.

8. A nitrogen compressor inlet filter according to claim 6, characterized in that: The connecting component (2) further includes a support (2-2), and the connecting inlet end (2-1) and the connecting outlet end (2-3) are located on two opposite sides of the support (2-2).

9. A nitrogen compressor inlet filter according to claim 1, 2, 3, 4, 5, 7 or 8, characterized in that: The drive assembly (3) includes a drive motor (3-1) and a transmission assembly (3-3). The drive motor (3-1) is connected to the rotating housing (4-1) through the transmission assembly (3-3).

10. A nitrogen compressor inlet filter according to claim 9, characterized in that: The transmission assembly (3-3) includes a pulley (3-2) and a driven pulley (3-4). The pulley (3-2) is connected to the rotating end of the drive motor (3-1), and the driven pulley (3-4) is connected to the rotating housing (4-1). The pulley (3-2) and the driven pulley (3-4) are connected by a belt.

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