Oil-free twin-screw air compressor

Abstract

This utility model discloses an oil-free twin-screw air compressor, relating to the field of air compressor technology. It includes an air compressor mounting housing, with a fixed housing installed at one end of both the air inlet and outlet. A connecting block is fixedly connected to one side of the outer wall of each fixed housing, and a motor is connected to the inner wall of the connecting block. A spur gear is connected to the output end of the motor. This utility model uses an adjustment mechanism to adjust the intake and exhaust port diameters in real time, precisely matching the air demand under different operating conditions. For example, at low loads, reducing the intake area can reduce ineffective compression and leakage losses, while at high loads, rapidly expanding the opening area can ensure sufficient air supply to the components, avoiding additional energy consumption due to insufficient pressure. This reduces energy waste associated with traditional fixed throttling or variable frequency speed control methods, ensuring the compressor always operates within its high-efficiency range.

Description

Technical Field

[0001] This utility model relates to the field of air compressor technology, specifically to an oil-free twin-screw air compressor. Background Technology

[0002] With increasing demands for energy efficiency and air quality in the industrial sector, high-efficiency, energy-saving oil-free twin-screw air compressors have become core equipment in high-precision industries such as food, pharmaceuticals, and electronics. These compressors, through their oil-free lubrication design, avoid the problem of reduced compressed air purity caused by lubricant contamination in traditional oil-lubricated compressors. Simultaneously, the high-efficiency compression characteristics of the twin-screw structure reduce energy consumption and operating costs. However, in actual industrial applications, different production processes have significantly different requirements for compressed air, such as dynamic changes in parameters like flow rate, pressure, and supply stability.

[0003] In existing technologies, traditional adjustment methods are difficult to achieve rapid response and precise matching, resulting in energy waste and increased equipment wear. Traditional adjustment methods usually rely on mechanical valves or variable frequency motors, which have problems such as adjustment lag, insufficient accuracy or high energy consumption. For example, under partial load conditions, fixed flow guide devices may cause excessive intake resistance, while variable frequency speed regulation can adjust the output, but cannot directly optimize the airflow path, resulting in additional energy loss. Furthermore, it is difficult to achieve continuous and precise control of the opening area, which further limits the compressor's adaptability under different operating conditions.

[0004] To address these issues, we designed an oil-free twin-screw air compressor. Utility Model Content

[0005] The purpose of this invention is to provide an oil-free twin-screw air compressor to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides an oil-free twin-screw air compressor, including an air compressor mounting housing. A fixed housing is installed at one end of the air inlet and one end of the air outlet of the air compressor mounting housing. A connecting block is fixedly connected to one side of the outer wall of each fixed housing. A motor is connected to the inner wall of the connecting block. A spur gear is connected to the output end of the motor. A turntable is meshed with one side of the spur gear. Multiple first guide rails are provided on the inner wall of the turntable. A sliding column is slidably connected to the inner wall of each first guide rail. A stop block is fixedly connected to the bottom end of the sliding column. A sliding block is fixedly connected to the bottom end of the stop block. A fixed disk is rotatably connected to the bottom end of the turntable. Multiple second guide rails are provided at the top end of the fixed disk.

[0007] Furthermore, a pipe is connected to the top of the fixed housing, and the pipe is connected to the interior of the air compressor mounting housing through the fixed housing.

[0008] Furthermore, the inner wall of the air compressor mounting housing is rotatably connected to a first screw and a second screw, which mesh with each other.

[0009] Furthermore, the outer wall of the motor is fixedly connected to the inner wall of the connecting block, and teeth are installed on one side of the outer wall of the turntable, with the teeth encircling the outer wall of the turntable at a 120-degree angle.

[0010] Furthermore, the air compressor mounting housing is bolted to the fixed housing by multiple bolts, and the fixed plate is fixedly connected to the inner wall of the fixed housing.

[0011] Furthermore, the stop block is slidably connected to the second guide rail of the fixed plate via a sliding block, and ventilation grooves are provided in the middle of both the turntable and the fixed plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. By adjusting the intake and exhaust port diameters in real time, the compressor can accurately match the air demand under different operating conditions. For example, at low load, reducing the intake area can reduce ineffective compression and leakage losses, while at high load, the opening area can be rapidly expanded to ensure sufficient air supply to the components, avoid extra energy consumption caused by insufficient pressure, reduce the energy waste of traditional fixed throttling or variable frequency speed control methods, and keep the compressor always operating in the high-efficiency range.

[0013] 2. The opening shape of the regulating mechanism can reduce airflow turbulence and eddy current loss, reduce pressure drop during intake and exhaust processes, thereby improving the volumetric efficiency and adiabatic efficiency of the compressor. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall external structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the internal structure of the adjustment component in the overall design of this utility model.

[0016] Figure 3 This is a schematic diagram showing the disassembled adjustment components of the present invention.

[0017] Figure 4 This is a schematic diagram of the overall middle stop block of this utility model.

[0018] In the diagram: 1. Air compressor mounting housing; 2. Fixed housing; 3. Connecting block; 4. Motor; 5. Spur gear; 6. Turntable; 7. First guide rail; 8. Stop block; 9. Sliding block; 10. Fixed plate; 11. Second guide rail; 12. Pipe; 13. First screw; 14. Second screw; 15. Sliding column. Detailed Implementation

[0019] Please see Figure 1-4 This utility model provides an oil-free twin-screw air compressor, including an air compressor mounting housing 1. A fixed housing 2 is installed at one end of the air inlet and one end of the air compressor mounting housing 1. The fixed housing 2 is fixed and remains stationary with the air compressor mounting housing 1, providing a mounting platform for the adjustment mechanism and connecting the adjustment mechanism to the air compressor mounting housing 1. It also serves as part of the gas inlet and outlet channel of the air compressor mounting housing 1, guiding the gas smoothly into or out of the air compressor mounting housing 1. Each fixed housing 2 has a fixed connection on one outer wall. Connecting block 3, with motor 4 connected to its inner wall. Connecting block 3 is fixed and remains relatively stationary with the fixed housing 2, ensuring the stability of motor 4 during operation and preventing displacement of motor 4 due to vibration or other reasons, which would affect the normal operation of the adjustment mechanism. A spur gear 5 is connected to the output end of motor 4. After motor 4 starts, it drives spur gear 5 to rotate synchronously. A turntable 6 is meshed with one side of spur gear 5. Multiple first guide rails 7 are provided on the inner wall of turntable 6. Each first guide rail 7... A sliding column 15 is slidably connected to the wall. A spur gear 5 transmits the rotational motion of the motor 4 to the turntable 6, realizing the power transmission. The turntable 6 rotates around its own axis under the drive of the spur gear 5. The rotation causes the sliding column 15 to slide within the first guide rail 7. A stop block 8 is fixedly connected to the bottom end of the sliding column 15, and a sliding block 9 is fixedly connected to the bottom end of the stop block 8. The movement of the sliding column 15 causes the stop block 8 to move. A fixed plate 10 is rotatably connected to the bottom end of the turntable 6. Multiple second guide rails 11 are opened at the top of the fixed plate 10. The stop block 8 directly participates in the movement of the sliding column 15. The size of the inlet and outlet openings is adjusted by changing the flow area of ​​the openings through its own movement, thereby controlling the gas flow rate entering or exiting the air compressor housing 1 to meet the gas demand under different operating conditions. The fixed plate 10 is fixed and remains stationary with the fixed housing 2. The fixed plate 10 cooperates with the turntable 6 and guides the movement of the sliding block 9 through the second guide slide rail 11, thereby controlling the position of the stop block 8 and realizing the adjustment of the size of the inlet and outlet openings. At the same time, the ventilation groove on the fixed plate 10 ensures that the gas can pass smoothly through the adjustment mechanism without affecting the normal intake or exhaust of the compressor.

[0020] The top of the fixed housing 2 is connected to a pipe 12. The pipe 12 is connected to the inside of the air compressor mounting housing 1 through the fixed housing 2. The pipe 12 is fixed and remains relatively stationary with the fixed housing 2. As a channel for gas transportation, it guides or introduces the gas that has passed through or is about to enter the air compressor mounting housing 1 into the air compressor mounting housing 1, ensuring that the gas can be stably transported along a predetermined path to meet the gas demand under different working conditions.

[0021] The inner wall of the air compressor mounting housing 1 is rotatably connected to a first screw 13 and a second screw 14. The first screw 13 and the second screw 14 mesh with each other and rotate in a meshing manner. During the rotation, the volume of the tooth grooves of the screws changes continuously, realizing the intake, compression and discharge of gas. The two work together to gradually compress the gas entering the air compressor mounting housing 1 to the required pressure. The rotational movements of the first screw 13 and the second screw 14 are balanced with each other, reducing the vibration and noise of the compressor.

[0022] The stop block 8 is slidably connected to the second guide rail 11 of the fixed disk 10 via the sliding block 9. Ventilation grooves are provided in the middle of both the turntable 6 and the fixed disk 10. The ventilation grooves ensure that the gas can pass smoothly during the rotation of the turntable 6, and avoid the normal flow of gas being affected by the obstruction of the turntable 6.

[0023] Working principle: The fixed housing 2 at one end of the air compressor mounting housing 1 (air inlet and outlet) provides a mounting platform for the adjustment mechanism and guides the gas in and out. After the motor 4 starts, it drives the spur gear 5 to rotate. The spur gear 5 drives the meshing turntable 6 to rotate around its own axis. When the turntable 6 rotates, the sliding column 15 in the first guide rail 7 on the inner wall slides synchronously. The sliding column 15 drives the stop block 8 to move. The sliding block 9 at the bottom of the stop block 8 slides in the second guide rail 11 of the fixed disk 10. The fixed disk 10 is fixed and the sliding block 9 is guided to move by the second guide rail 11, thereby controlling the position of the stop block 8, changing the flow area of ​​the air inlet and outlet openings, and controlling the gas flow rate entering or leaving the air compressor mounting housing 1 to meet the gas demand of different working conditions. At the same time, the ventilation groove in the middle of the turntable 6 and the fixed disk 10 ensures that the gas passes smoothly through the adjustment mechanism without affecting the normal air intake or exhaust of the compressor. This reduces the energy waste of traditional fixed throttling or variable frequency speed control methods and keeps the air compressor mounting housing 1 always operating in the high-efficiency range.

Claims

1. An oil-free twin-screw air compressor, characterized in that: The air compressor mounting housing (1) is provided with a fixed housing (2) installed at one end of the air inlet and the air outlet of the air compressor mounting housing (1). A connecting block (3) is fixedly connected to one side of the outer wall of each fixed housing (2). A motor (4) is connected to the inner wall of the connecting block (3). A spur gear (5) is connected to the output end of the motor (4). A turntable (6) is meshed with one side of the spur gear (5). Multiple first guide rails (7) are provided on the inner wall of the turntable (6). A sliding column (15) is slidably connected to the inner wall of each first guide rail (7). A stop block (8) is fixedly connected to the bottom end of the sliding column (15). A sliding block (9) is fixedly connected to the bottom end of the stop block (8). A fixed disk (10) is rotatably connected to the bottom end of the turntable (6). Multiple second guide rails (11) are provided at the top end of the fixed disk (10).

2. The oil-free twin-screw air compressor as described in claim 1, characterized in that: The top of the fixed housing (2) is connected to a pipe (12), which is connected to the interior of the air compressor mounting housing (1) through the fixed housing (2).

3. The oil-free twin-screw air compressor as described in claim 2, characterized in that: The inner wall of the air compressor mounting housing (1) is rotatably connected to a first screw (13) and a second screw (14), and the first screw (13) and the second screw (14) mesh with each other.

4. An oil-free twin-screw air compressor as described in claim 3, characterized in that: The outer wall of the motor (4) is fixedly connected to the inner wall of the connecting block (3). The outer wall of one side of the turntable (6) is equipped with teeth, which surround the outer wall of one side of the turntable (6) at a 120-degree angle.

5. An oil-free twin-screw air compressor as described in claim 4, characterized in that: The stop block (8) is slidably connected to the second guide rail (11) of the fixed disk (10) via the sliding block (9), and ventilation grooves are provided in the middle of both the turntable (6) and the fixed disk (10).

6. An oil-free twin-screw air compressor as described in claim 5, characterized in that: The air compressor mounting housing (1) is bolted to the fixed housing (2) by multiple bolts, and the fixed plate (10) is fixedly connected to the inner wall of the fixed housing (2).

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