Oil-free air cooling structure of high-temperature screw compressor

Abstract

The utility model relates to the technical field of cooling structures, in particular to an oil-free air cooling structure of a high-temperature screw compressor, which comprises a cooling structure and a compressor, a bearing seat is arranged in the cooling structure, a bearing is arranged at the upper end of the bearing seat, a bearing pressing sleeve is arranged at the upper end of the bearing, and the compressor is arranged in the bearing pressing sleeve. A spacer bush is installed on the side of the bearing seat, a sealing piece is installed at the lower end of the bearing seat, a bearing seat cover plate is arranged at the upper end of the bearing pressing sleeve, and an exhaust port is formed in the middle of the bearing seat cover plate. According to the utility model, continuous compressed air enters the bearing cavity and is exhausted from the exhaust port of the bearing seat cover plate to take away heat generated during the operation of the compressor, so that the temperature generated during the operation of the bearing is reduced, and the bearing is always in the best service environment by adjusting the air flow to meet different working conditions; and even in some high-risk and high-risk environments, the system can also be used, and dangerous events caused by too high compression temperature are avoided.

Description

Technical Field

[0001] This utility model relates to the field of cooling structure technology, specifically to an oil-free air-cooled cooling structure for a high-temperature screw compressor. Background Technology

[0002] Various compressors are used in evaporation, industrial gas recovery and treatment equipment, and gas expansion equipment. In these specialized industries, the performance requirements for compressors are extremely stringent. For example, the operating temperature in evaporation equipment is generally between 85-195℃, while the adiabatic temperature generated by the compressor during compression is even higher. At this temperature, the components involved in the compressor compression process can be damaged due to excessive heat.

[0003] The existing technology still has the following drawbacks in its use:

[0004] To prevent bearing damage from high temperatures, current practices typically involve using lubricating oil for heat exchange to lower the operating temperature and protect the compressor bearings. However, this limits the compressor's application range. Traditionally, bearing operation relies on the flow of lubricating oil to remove heat and achieve bearing cooling. Industries such as pharmaceuticals, food, brewing, and printing and dyeing require oil-free compressor operation, which presents significant challenges to oil-free cooling of the compressor's moving parts.

[0005] In view of this, we propose an oil-free air-cooled cooling structure for high-temperature screw compressors to solve the existing problems. Utility Model Content

[0006] The purpose of this invention is to provide an oil-free air-cooled cooling structure for a high-temperature screw compressor to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a high-temperature screw compressor oil-free air-cooled cooling structure, comprising a cooling structure and a compressor, wherein a bearing housing is provided within the cooling structure, a bearing is provided at the upper end of the bearing housing, a bearing pressure sleeve is provided at the upper end of the bearing, a spacer is installed on the side of the bearing housing, a seal is installed at the lower end of the bearing housing, a bearing housing cover plate is provided at the upper end of the bearing pressure sleeve, an exhaust port is provided in the middle of the bearing housing cover plate, a dustproof mesh is connected to the exhaust port, the bearing housing is circular in shape, connecting bolts are provided on the bearing housing cover plate, and the bearing housing, bearing, bearing pressure plate, spacer, and bearing housing cover plate are connected by connecting bolts, multiple quick-connect plugs are provided on the side of the bearing housing cover plate, an air inlet is provided in the quick-connect plugs, a bearing housing hole is provided inside the compressor, and the bearing housing is installed on the bearing housing hole.

[0008] Preferably, the cooling structure is cylindrical in shape, and each component is installed in a unique orientation during installation to facilitate the passage of process air vents.

[0009] Preferably, the upper part of the bearing housing has an L-shaped structure.

[0010] Preferably, the cooling structure is provided with an air guide pipe, which runs along the inside of the bearing housing, through the bottom of the bearing, and to the exhaust port.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. In this invention, a continuous stream of compressed air enters the bearing cavity and exits through the exhaust port of the bearing housing cover, carrying away the heat generated during compressor operation and reducing the bearing temperature. By adjusting the airflow rate, different operating conditions can be met, ensuring the bearing remains in an optimal operating environment. It can be used even in high-risk environments without the risk of dangerous events due to excessively high compression temperatures. It offers high flexibility, allowing for easy adjustment of the compressed air flow rate according to the actual operating conditions of the compressor.

[0013] 2. The oil-free air-cooled cooling structure of the high-temperature screw compressor of this utility model adopts an oil-free air-cooled heat exchange cooling mode, which changes the traditional lubricating oil heat exchange cooling, so that the screw compressor is no longer limited by lubricating oil leakage.

[0014] 3. This utility model uses compressed air as the heat exchange medium to replace lubricating oil for cooling. Air does not cause any pollution to the environment, saving on the costs of purchasing and disposing of waste lubricating oil. This makes the screw compressor an energy-saving and environmentally friendly device with no pollution sources. Attached Figure Description

[0015] Figure 1 This is a cross-sectional structural diagram of the present invention.

[0016] In the diagram: 1. Bearing; 2. Bearing housing; 3. Bearing housing bore; 4. Spacer; 5. Bearing compression sleeve; 6. Exhaust port; 7. Dustproof screen; 8. Connecting bolt; 9. Bearing housing cover plate; 10. Quick connector; 11. Compressor; 12. Seal. Detailed Implementation

[0017] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0018] Example 1

[0019] like Figure 1As shown, this utility model proposes a high-temperature screw compressor oil-free air-cooled cooling structure, including a cooling structure and a compressor 11. A bearing housing 2 is provided within the cooling structure, a bearing 1 is mounted on the upper end of the bearing housing 2, a bearing sleeve 5 is mounted on the upper end of the bearing 1, a spacer 4 is installed on the side of the bearing housing 2, and a seal 12 is installed on the lower end of the bearing housing 2. A bearing housing cover plate 9 is provided on the upper end of the bearing sleeve 5, and an exhaust port 6 is provided in the middle of the bearing housing cover plate 9. A dustproof mesh 7 is connected to the exhaust port 6. The bearing housing 2 is circular in shape, and connecting bolts 8 are provided on the bearing housing cover plate 9. The bearing housing 2, bearing 1, and bearing 1 sleeve 5 are connected together. The plate, spacer 4, and bearing housing cover 9 are connected by connecting bolts 8. Multiple quick-connect plugs 10 are provided on the side of the bearing housing cover 9, each with an air inlet. The compressor 11 has a bearing housing hole 3, and the bearing housing 2 is installed in the bearing housing hole 3. Three air passage holes are drilled on the main body of the bearing housing 2 of the compressor 11. One hole is machined from the bottom as the main hole, another hole is machined from the flange connecting the bearing housing 2 to the main hole, and the third hole is machined from the middle of the bearing housing 2, at the bottom of the step where the bearing 1 is installed, intersecting the main hole to facilitate air entry into the lower end of the bearing 1. Sealing threads are machined into the holes. One hole is used to install a quick-connect air pipe connector, and the other two holes are used to install sealing plugs. A threaded hole is drilled at the center of the bearing housing 2 pressure plate to install a bent-tube type dustproof mesh 7. Bearing housing 2, bearing 1, bearing 1 pressure plate, spacer 4, bearing housing cover 9, and dustproof net 7 are installed sequentially at the bearing housing 2 position of compressor 11. Low-pressure compressed air is input from the position shown in the figure, flows through the bottom of bearing 1 to the bearing 1 chamber, and then is discharged from the exhaust port 6 of bearing 1 pressure plate.

[0020] Furthermore, the cooling structure has a cylindrical shape, and each component is installed in a unique direction during assembly, which facilitates the passage of process vents, ensures smooth overall ventilation, and provides good heat dissipation.

[0021] Furthermore, the upper part of the bearing housing 2 has an L-shaped structure. The L-shaped vertical wall increases the contact area between the bearing 1 and the airflow, thereby improving the heat dissipation effect.

[0022] Furthermore, the cooling structure is equipped with an air guide pipe that runs along the inside of the bearing housing 2, through the bottom of the bearing 1, and through to the exhaust port 6.

[0023] An oil-free air-cooled cooling structure for a high-temperature screw compressor reduces bearing operating temperature. The system integrates a main air supply pipe into the compressor unit. Six distribution pipes are installed on this main pipe, enabling it to distribute compressed air and control its flow rate. Six more distribution pipes extend directly into the compressor body, corresponding to the air inlets of the compressor's six bearing housings. Air enters the bearing chamber directly through gas channels in the bearing housings, following the designated air path, and exits through the exhaust ports at the top of the bearing housings, carrying away the heat generated during bearing operation.

[0024] The above specific embodiments are merely several preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A high-temperature screw compressor oil-free air-cooled cooling structure, characterized in that, The device includes a cooling structure and a compressor (11). A bearing housing (2) is installed within the cooling structure. A bearing (1) is installed at the upper end of the bearing housing (2). A bearing sleeve (5) is installed at the upper end of the bearing (1). A spacer (4) is installed on the side of the bearing housing (2). A seal (12) is installed at the lower end of the bearing housing (2). A bearing housing cover plate (9) is installed at the upper end of the bearing sleeve (5). An exhaust port (6) is located in the middle of the bearing housing cover plate (9). A dustproof mesh (7) is connected to the exhaust port (6). The bearing housing (2) is circular in shape. The bearing housing cover plate (9) is provided with connecting bolts (8). The bearing housing (2), bearing (1), bearing (1) pressure plate, spacer (4), and bearing housing cover plate (9) are connected by connecting bolts (8). The side of the bearing housing cover plate (9) is provided with multiple quick-connect plugs (10). The quick-connect plugs (10) are provided with air inlets. The compressor (11) is provided with bearing housing holes (3). The bearing housing (2) is installed on the bearing housing holes (3).

2. The oil-free air-cooled cooling structure for a high-temperature screw compressor according to claim 1, characterized in that: The cooling structure is cylindrical in shape, and each component is installed in a unique orientation to facilitate the passage of process air vents.

3. The oil-free air-cooled cooling structure for a high-temperature screw compressor according to claim 1, characterized in that: The upper part of the bearing housing (2) has an L-shaped structure.

4. The oil-free air-cooled cooling structure for a high-temperature screw compressor according to claim 1, characterized in that: The cooling structure is equipped with an air guide pipe, which runs along the inside of the bearing seat (2), through the bottom of the bearing (1), and through to the exhaust port (6).

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