An oil-free air compressor

Abstract

This utility model discloses an oil-free air compressor, including an oil-free air compressor body. A fixed frame is fixedly connected to one side of the top of the oil-free air compressor body. A separation component is fixedly installed on one side of the outer surface of the fixed frame. A solenoid valve is fixedly connected to the bottom of the separation component, and a diverter pipe is fixedly connected to the top of the separation component. An adjustable movable pipe is sealed to the outer surface of the diverter pipe, and pressure seats are fixedly connected to both outlet ends of the adjustable movable pipe. In this utility model, by integrating a separation component consisting of an inverted conical pipe, a tangential air inlet square pipe, and a solenoid valve, and setting an adjustable and compressed filter component at the air inlet end, a two-stage purification system combining centrifugal separation and high-efficiency filtration is formed. This system can efficiently remove liquid water and particulate pollutants from the intake air, significantly improve the intake air quality, and thus effectively protect the precision components inside the oil-free compressor from corrosion and wear, extending the service life of the equipment.

Description

Technical Field

[0001] This utility model relates to the field of oil-free air compressor technology, and in particular to an oil-free air compressor. Background Technology

[0002] An oil-free air compressor is a compressor that does not use lubricating oil. Its core feature is that it avoids the use of lubricating oil through special design or materials (such as oil-free lubricating materials and special sealing structures), thereby avoiding oil contamination. This type of compressor has important applications in many fields, such as food processing, medical, and industrial production, because it can provide cleaner, pollution-free compressed air.

[0003] Oil-free air compressors require the intake of large amounts of ambient air during operation. This environment contains pollutants such as water vapor and dust. Direct inhalation of these pollutants can corrode delicate internal components, accelerate wear, and severely impact equipment lifespan and reliability. Current technology typically uses inlet filters to intercept particulate matter, but traditional filters have limited effectiveness in separating liquid water (such as mist and rain) and are prone to clogging, requiring frequent replacement. Frequent maintenance not only increases costs but also leads to equipment downtime, disrupting continuous production. Furthermore, for air compressors with dual inlets, existing filters are often separate structures, making replacement time-consuming and labor-intensive, and it's difficult to ensure consistent sealing and filtration efficiency between the two inlet channels. Therefore, there is an urgent need for an integrated intake pretreatment solution that can efficiently separate water and dust and support rapid maintenance, fundamentally ensuring the long-term stable operation of oil-free air compressors. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose an oil-free air compressor.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an oil-free air compressor, comprising an oil-free air compressor body, a fixed frame fixedly connected to one side of the top of the oil-free air compressor body, a separation component fixedly installed on one side of the outer surface of the fixed frame, a solenoid valve fixedly connected to the bottom of the separation component, and a diversion pipe fixedly connected to the top of the separation component.

[0006] An adjustable movable tube is sealed to the outer surface of the diverter pipe. Both outlet ends of the adjustable movable tube are fixedly connected to pressure seats. One end of each pressure seat is abutted against a fixed cover, and the two fixed covers are fixedly connected to the two air inlets of the oil-free air compressor body.

[0007] Both of the aforementioned pressure seats are sealed and pressed together with the adjacent fixed cover to form a filter assembly.

[0008] Furthermore, the separation component includes an inverted cone tube, which is fixedly connected to a mounting bracket and is fixedly interconnected with a solenoid valve. A short pipe is fixedly interconnected at the top of the inverted cone tube, and the short pipe is fixedly sleeved on the middle of the outer surface of the air inlet end of the splitter pipe. An air inlet square pipe is fixedly interconnected on one side of the outer surface of the short pipe along the tangential direction. This structure, through the design of "the air inlet square pipe being connected to the short pipe along the tangential direction", allows the intake air to form a high-speed rotating vortex inside the inverted cone tube, using centrifugal force to efficiently separate liquid water and heavier particulate matter.

[0009] Furthermore, the adjustable movable tube includes a handwheel, which is located on one side of the fixed frame. A screw is fixedly connected to the outer surface of the handwheel on one side of the fixed frame, and the screw passes through the fixed frame and is rotatably connected to the fixed frame. A nut is threaded onto the outer surface of the screw. This design allows the screw to be driven to rotate by rotating a single handwheel, thereby controlling the linear movement of the nut and converting the rotational motion into linear displacement.

[0010] Furthermore, a movable rod is fixedly sleeved on the outer surface of the nut, and both ends of the movable rod are fixedly connected to movable tube bodies. The movable tube bodies are sealed and slidably sleeved on the outer surface of the diverter tube and are fixedly interconnected with the pressure seat. The movable rod synchronously transmits the linear movement of the nut to the movable tube bodies on both sides, driving the two pressure seats to move simultaneously.

[0011] Furthermore, retaining rings are fixedly connected to the inner surfaces of both fixed covers, ensuring that the filter assembly can be quickly aligned and withstand the clamping force from the pressure seat during installation, thereby forming a stable sealing interface.

[0012] Furthermore, both of the aforementioned filter components include an annular frame, with both ends of the annular frame sealingly abutting against a retaining ring and a pressure seat, respectively. A filter element is fixedly connected to the inner surface of the annular frame. This structure integrates the filter element into the annular frame to form a standard modular unit, making the replacement of the filter element extremely simple and quick.

[0013] The beneficial effects of this utility model are:

[0014] In use, this utility model integrates a separation component consisting of an inverted conical tube, a tangential air intake square tube, and a solenoid valve, and sets up an adjustable pressure filter component at the air intake end, forming a two-stage purification system that combines centrifugal separation and high-efficiency filtration. This system can efficiently remove liquid water and particulate pollutants from the intake air, significantly improve the intake air quality, and thus effectively protect the precision components inside the oil-free host from corrosion and wear, extending the service life of the equipment.

[0015] 2. In use, the adjustable clamping mechanism consisting of a handwheel, screw, and movable tube can quickly and synchronously control the clamping and loosening of the two air inlet filter components, realizing convenient replacement and reliable sealing of the filter elements, greatly simplifying the daily maintenance process, reducing equipment downtime, and ensuring the consistency of the dual air inlet sealing, thereby improving the stability of equipment operation and maintenance efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0018] Figure 2 For the present utility model Figure 2 Enlarged view of point A in the middle;

[0019] Figure 3 This is a partial cross-sectional view of the present invention.

[0020] The attached figures are labeled as follows:

[0021] 1. Oil-free air compressor body; 2. Diverter pipe; 3. Inlet square pipe; 4. Inverted cone pipe; 5. Solenoid valve; 6. Short pipe; 7. Handwheel; 8. Fixing frame; 9. Fixing cover; 10. Pressure base; 11. Screw; 12. Nut; 13. Movable rod; 14. Retaining ring; 15. Filter element; 16. Annular frame; 17. Movable pipe body. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1-3As shown, an oil-free air compressor is disclosed, comprising an oil-free air compressor body 1. A fixed frame 8 is fixedly connected to one side of the top of the oil-free air compressor body 1. A separation component is fixedly installed on one side of the outer surface of the fixed frame 8. A solenoid valve 5 is fixedly connected to the bottom of the separation component. The solenoid valve 5 can be electrically connected to the controller used by the oil-free air compressor body 1 to facilitate its operation, or it can be independently controlled by an existing controller. A diverter pipe 2 is fixedly connected to the top of the separation component. The separation component includes an inverted cone pipe 4, which is fixedly connected to the fixed frame 8 and fixedly connected to the solenoid valve 5. A short pipe 6 is fixedly connected to the top of the inverted cone pipe 4, and the short pipe 6 is fixedly sleeved on the middle of the outer surface of the air inlet end of the diverter pipe 2. An air inlet square pipe 3 is fixedly connected to one side of the outer surface of the short pipe 6 along the tangential direction. The air inlet square pipe 3 is connected to the short pipe 6 along the tangential direction, so that the intake air generates a swirling flow, and the centrifugal force is used to initially separate moisture and impurities. The inverted cone pipe 4 is the main body of the separation component, and its conical structure helps to accelerate the airflow and promote the collection and falling of droplets.

[0024] An adjustable movable tube is sealed to the outer surface of the diverter pipe 2. Both outlet ends of the adjustable movable tube are fixedly connected to pressure seats 10. One end of each pressure seat 10 abuts against a fixed cover 9, and the two fixed covers 9 are respectively fixedly connected to the two air inlets of the oil-free air compressor body 1. The adjustable movable tube includes a handwheel 7, which is located on one side of the fixed frame 8. The outer surface of the handwheel 7 has anti-slip textures to increase friction and prevent slippage during use. A screw 11 is fixedly connected to the outer surface of the handwheel 7 on one side of the fixed frame 8, and the screw 11 passes through the fixed frame 8 and is rotatably connected to it. The screw 11 is rotatably connected to the fixed frame 8 through a bearing seat. The bearing housing is fixed to the outer surface of the screw 11. The screw 11 is threaded with a nut 12. The screw 11 has a threaded helix angle smaller than the friction angle, which gives it a self-locking capability and prevents it from shifting due to vibration or load. The outer surface of the nut 12 is fixed with a movable rod 13. Both ends of the movable rod 13 are fixedly connected to a movable tube body 17. The movable tube body 17 is slidably fitted onto the outer surface of the diverter 2 and is fixedly connected to the pressure seat 10. A sealing ring is fixedly embedded on the inner surface of the movable tube body 17 and seals against the diverter 2, thus achieving a sealed connection between the movable tube body 17 and the diverter 2.

[0025] Both pressure seats 10 are sealed and pressed together with the adjacent fixed covers 9 to form filter components. The inner surfaces of both fixed covers 9 are fixedly connected with retaining rings 14. Both filter components include annular frames 16, and the two ends of the annular frames 16 are sealed and abutted against the retaining rings 14 and pressure seats 10 respectively. The two ends of the annular frames 16 are fixedly connected with annular sealing gaskets, which are sealed and abutted against the retaining rings 14 and pressure seats 10 respectively, so as to achieve a sealed connection between the annular frames 16 and the retaining rings 14 and pressure seats 10. The inner surface of the annular frames 16 is fixedly connected with filter elements 15. The filter elements 15 are the core of the filter components and are used to finally filter fine particulate matter in the air to ensure that the air entering the main unit is clean.

[0026] I. Centrifugal Separation Stage (Primary Water and Dust Removal):

[0027] Ambient air first enters the cyclone separation chamber, composed of short pipe 6 and inverted cone pipe 4, tangentially through the air intake square pipe 3. Due to the tangential air intake, the air forms a high-speed rotating vortex within the inverted cone chamber. Under the action of centrifugal force, denser liquid water droplets, oil mist droplets, and solid particles in the air are thrown towards the inner wall of the chamber. These separated impurities flow downwards along the inner wall of the inverted cone and eventually collect at the bottom of the separation chamber. The solenoid valve 5 integrated at the bottom acts as an automatic drain valve, which can periodically open according to a preset program (such as a timer) or a liquid level signal to automatically discharge the collected liquid water and contaminants from the system, thereby achieving continuous and automatic primary purification.

[0028] II. Airflow Distribution and Fine Filtration Stage:

[0029] After initial purification by centrifugation, the air enters the splitter pipe 2, which divides the airflow into two paths, each leading to one of the two air inlets of the oil-free air compressor body 1. This accommodates the needs of the dual-inlet compressor and ensures balanced airflow. Each airflow path flows sequentially through the adjustable movable pipe and the compressor base 10, finally entering the fixed cover 9. At the inlet of the fixed cover 9, a filter assembly consisting of an annular frame 16 and a filter element 15 is installed. The filter element 15 performs secondary fine filtration, effectively capturing any remaining fine dust particles, ensuring extremely high air cleanliness entering the oil-free air compressor body 1 and meeting the stringent requirements of oil-free compression.

[0030] III. Implementation of convenient maintenance functions:

[0031] When the filter element 15 needs to be replaced or cleaned, the operator can rotate the handwheel 7. The handwheel 7 drives the screw 11 to rotate, causing the threaded nut 12 to move axially. The nut 12, through the movable rod 13, drives the movable tube bodies 17 at both ends and the pressure seat 10 to move away from the fixed cover 9, thereby releasing the clamping force on the filter assembly annular frame 16. At this time, the old filter assembly can be easily removed for replacement. After installing the new assembly, rotate the handwheel 7 in the opposite direction. Driven by the screw 11, the pressure seat 10 re-clamps the annular frame 16, forming a reliable seal with the retaining ring 14 and the pressure seat 10 to prevent unfiltered air leakage.

[0032] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, 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 this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An oil-free air compressor comprising an oil-free air compressor main body (1), characterized by: A fixed frame (8) is fixedly connected to the top side of the oil-free air compressor body (1). A separation component is fixedly installed on one side of the outer surface of the fixed frame (8). A solenoid valve (5) is fixedly connected to the bottom of the separation component. A diversion pipe (2) is fixedly connected to the top of the separation component. The outer surface of the diversion pipe (2) is sealed with an adjustable movable pipe. The two outlet ends of the adjustable movable pipe are fixedly connected to pressure seats (10). One end of each pressure seat (10) is abutted against a fixed cover (9), and the two fixed covers (9) are fixedly connected to the two air inlets of the oil-free air compressor body (1). Both of the pressure seats (10) are sealed and pressed together with the adjacent fixed cover (9) to form a filter assembly.

2. The oil-free air compressor of claim 1, wherein: The separation component includes an inverted cone tube (4), which is fixedly connected to a fixed frame (8) and is fixedly interconnected with a solenoid valve (5). A short tube (6) is fixedly interconnected at the top of the inverted cone tube (4), and the short tube (6) is fixedly sleeved on the middle of the outer surface of the air inlet end of the split pipe (2). An air inlet square tube (3) is fixedly interconnected on one side of the outer surface of the short tube (6) along the tangential direction.

3. The oil-free air compressor of claim 1, wherein: The adjustable movable tube includes a handwheel (7), and the handwheel (7) is located on one side of the fixed frame (8). The outer surface of the handwheel (7) is fixedly connected to a screw (11) on one side of the fixed frame (8). The screw (11) passes through the fixed frame (8) and is rotatably connected to the fixed frame (8). The outer surface of the screw (11) is threaded with a nut (12).

4. The oil-free air compressor of claim 3, wherein: The outer surface of the nut (12) is fixedly sleeved with a movable rod (13), and both ends of the movable rod (13) are fixedly connected to a movable tube body (17). The movable tube body (17) is sealed and slidably sleeved on the outer surface of the diversion pipe (2) and is fixedly interconnected with the pressure seat (10).

5. The oil-free air compressor of claim 1, wherein: Both of the fixed covers (9) have retaining rings (14) fixedly connected to their inner surfaces.

6. An oil-free air compressor as claimed in claim 5, wherein: Both of the filter components include an annular frame (16), and the two ends of the annular frame (16) are sealed and abutted against the retaining ring (14) and the pressure seat (10) respectively. The inner surface of the annular frame (16) is fixedly connected with a filter element (15).

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