Large-flow double-screw air compressor

Abstract

This utility model provides a high-flow-rate twin-screw air compressor, belonging to the field of air compressor technology. It includes a housing with a partition in the middle. The left side of the partition is the working chamber, and the right side is the drive chamber. A driven shaft and a drive shaft are rotatably connected inside the working chamber, arranged parallel to each other. A female screw and a male screw are respectively mounted on the driven shaft and drive shaft, meshing with each other. The gear ratio between the female and male screws is 5.5:6.6 to 6.5:7.8. The diameter of the exhaust pipe is 10-13 cm. The beneficial effect of this utility model is that by increasing the helical density of the female and male screws, the air intake volume of the air compressor is increased. Then, by increasing the diameter of the exhaust pipe, the discharge speed of the compressed gas is increased, reducing the number of air compressors in a spinning mill workshop from three to two, effectively reducing the enterprise's energy consumption and further reducing the enterprise's economic costs.

Description

Technical Field

[0001] This utility model belongs to the field of air compressor technology, specifically relating to a large-flow twin-screw air compressor. Background Technology

[0002] The working principle of a twin-screw air compressor is mainly based on the rotation and meshing of the screws. Specifically, air enters the compressor through the inlet, and a sealed working space is formed by the meshing of the main screw and the driven screw. As the screws rotate, the volume of the working space gradually decreases, thereby compressing the incoming air. During the compression process, heat is generated due to the compression of the gas, so cooling is required. Twin-screw air compressors are usually equipped with a cooling system, which uses a cooler or cooling lubricant to reduce the temperature of the compressed air to an acceptable range. When the gas is fully compressed, it is discharged through the outlet. At this point, the gas has reached the required compressed air state and can be supplied to various industrial equipment and applications.

[0003] The air compressor used in a certain spinning mill has a motor power of 132 kW, a volumetric flow rate of 19.5 m³ / min, and an exhaust pressure of 10 MPa. During production, the spinning mill can meet normal production needs with an air pressure of 6.0-6.2 MPa. The screw air compressor with an exhaust pressure of 10 MPa has a spare capacity of 3.8-4.0 MPa that is not actually used. The 132 kW motor can only achieve 85% of its maximum power performance at 6.0-6.2 MPa. The instantaneous flow rate of compressed air used in the spinning mill workshop is 45 m³, requiring three air compressors to meet the demand. Each air compressor has a certain degree of spare capacity, which increases the company's energy consumption. Therefore, a high-flow-rate twin-screw air compressor that can achieve 100% performance at an air pressure of 6.0-6.2 MPa is needed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to address the problem that current air compressors with a discharge pressure of 10MPa cannot fully utilize their performance at discharge pressures of 6-6.2MPa, leading to the need for multiple air compressors to meet enterprise needs and increasing energy consumption. This invention proposes a high-flow-rate twin-screw air compressor that can fully utilize its performance at discharge pressures of 6-6.2MPa, reducing the number of air compressors required and further lowering energy consumption for enterprises.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows: a high-flow twin-screw air compressor, including a housing, with a partition in the middle of the housing. The left side of the partition is the working chamber, and the right side is the drive chamber. A driven shaft and a drive shaft are rotatably connected inside the working chamber. The driven shaft and the drive shaft are arranged in parallel. A female screw and a male screw are respectively provided on the driven shaft and the drive shaft. The female screw and the male screw mesh with each other, and the gear ratio between the female screw and the male screw is 5.5:6.6-6.5:7.8. An exhaust pipe with a diameter of 10-13 cm is also connected to the housing. In use, the intake volume of the air compressor is increased by increasing the helical density of the female screw and the male screw, and the exhaust speed of the compressed gas is increased by increasing the diameter of the exhaust pipe. This reduces the number of air compressors in a spinning mill workshop from three to two, effectively reducing the company's electricity consumption and further reducing the company's economic costs. The overall performance is good and the practicality is strong.

[0006] Furthermore, two cylindrical roller bearings are installed on the inner left side wall of the working chamber. The left ends of the driven shaft and the driving shaft are fixed to the inner rings of the two cylindrical roller bearings respectively. The cylindrical roller bearings can meet the usage requirements of the air compressor.

[0007] Furthermore, the right ends of the driven shaft and the driving shaft pass through the partition and are rotatably connected to the partition. Both the driven shaft and the driving shaft are rotatably connected to bearing bushes, which are installed on the partition. Sealing rings are provided at both ends of the bearing bushes. The bearing bushes can prevent wear on the driven shaft and the driving shaft, and the sealing rings can seal the working chamber.

[0008] Furthermore, the drive cavity is equipped with driven teeth and driving teeth. The driven teeth are mounted on the driven shaft, and the driving teeth are mounted on the driving shaft.

[0009] Furthermore, the right end of the drive shaft passes through the housing and is rotatably connected to the housing. A drive motor is installed outside the housing, and the output end of the drive motor is connected to the drive shaft. The drive motor drives the drive shaft to rotate, which in turn drives the driven shaft to rotate, allowing the air compressor to start working.

[0010] Furthermore, both the female and male screws are coated with a wear-resistant coating, which further improves their service life.

[0011] As can be seen from the above technical solutions, this utility model has the following advantages:

[0012] By increasing the spiral density of the male and female screws to increase the air intake of the air compressor, and then increasing the diameter of the exhaust pipe to increase the discharge speed of the compressed gas, the number of air compressors in the spinning mill workshop can be reduced from three to two. This effectively reduces the company's electricity consumption and further reduces the company's economic costs. The overall performance is good and the practicality is strong. Attached Figure Description

[0013] To more clearly illustrate the technical solution of this utility model, the drawings used in the description 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.

[0014] Figure 1 This is a top view cross-sectional structural diagram of the present invention.

[0015] In the diagram: 1. Housing; 2. Driven shaft; 3. Drive shaft; 4. Female screw; 5. Male screw; 6. Cylindrical roller bearing; 7. Bearing shell; 8. Sealing ring; 9. Driven gear; 10. Drive gear; 11. Drive motor; 12. Working chamber; 13. Drive chamber; 14. Partition plate. Detailed Implementation

[0016] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0017] like Figure 1As shown, this embodiment proposes a high-flow-rate twin-screw air compressor, including a housing 1. A partition 14 is provided in the middle of the housing 1. The left side of the partition 14 is the working chamber 12, and the right side is the drive chamber 13. The driven shaft 2 and the drive shaft 3 are rotatably connected inside the working chamber 12. Two cylindrical roller bearings 6 are provided on the inner left side wall of the working chamber 12. The left ends of the driven shaft 2 and the drive shaft 3 are respectively fixed to the inner rings of the two cylindrical roller bearings 6. The cylindrical roller bearings 6 can meet the usage requirements of the air compressor. The right ends of the driven shaft 2 and the drive shaft 3 pass through the partition. The driven shaft 2 and the driving shaft 3 are rotatably connected to the partition plate 14. Bearing shells 7 are rotatably connected to both the driven shaft 2 and the driving shaft 3. The bearing shells 7 are mounted on the partition plate 14, and sealing rings 8 are provided at both ends of the bearing shells 7. The bearing shells 7 prevent wear on the driven shaft 2 and the driving shaft 3, and the sealing rings 8 seal the working chamber 12. The driven shaft 2 and the driving shaft 3 are arranged in parallel. A female screw 4 and a male screw 5 are respectively provided on the driven shaft 2 and the driving shaft 3. The female screw 4 and the male screw 5 mesh with each other, and the gear ratio between the female screw 4 and the male screw 5 is 5.5:6.6-. 6.5:7.8, both the female screw 4 and the male screw 5 are coated with a wear-resistant coating, which further improves their service life. An exhaust pipe 15 with a diameter of 10-13 cm is also connected to the housing 1. The drive chamber 13 contains a driven gear 9 and a driving gear 10. The driven gear 9 is mounted on the driven shaft 2, and the driving gear 10 is mounted on the driving shaft 3. The right end of the driving shaft 3 passes through the housing 1 and is rotatably connected to it. A drive motor 11 is located outside the housing 1. The output end of motor 11 is connected to the drive shaft 3. The drive shaft 3 is rotated by the drive motor 11, which in turn drives the driven shaft 2 to rotate, so that the air compressor starts to work. During use, the intake volume of the air compressor is increased by increasing the spiral density of the female screw 4 and the male screw 5. Then, the exhaust gas discharge speed is increased by increasing the diameter of the exhaust pipe 15. This reduces the number of air compressors in the spinning mill workshop from three to two, which can effectively reduce the company's power consumption and further reduce the company's economic costs. The overall performance is good and the practicality is strong.

[0018] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A large flow double screw air compressor comprising a casing (1), characterized in that, A partition (14) is provided in the middle of the housing (1). The left side of the partition (14) is the working chamber (12), and the right side is the driving chamber (13). The working chamber (12) is rotatably connected to the driven shaft (2) and the driving shaft (3). The driven shaft (2) and the driving shaft (3) are arranged in parallel. The driven shaft (2) and the driving shaft (3) are respectively provided with a female screw (4) and a male screw (5). The female screw (4) and the male screw (5) mesh with each other. The gear ratio between the female screw (4) and the male screw (5) is 5.5:6.6-6.5:7.

8. An exhaust pipe (15) is also connected to the housing (1). The diameter of the exhaust pipe (15) is 10-13 cm.

2. The large flow twin screw air compressor of claim 1, wherein, Two cylindrical roller bearings (6) are provided on the inner left side wall of the working cavity (12), and the left ends of the driven shaft (2) and the driving shaft (3) are fixed to the inner rings of the two cylindrical roller bearings (6) respectively.

3. The large flow twin screw air compressor of claim 1, wherein, The right ends of the driven shaft (2) and the driving shaft (3) pass through the partition (14) and are rotatably connected to the partition (14). Both the driven shaft (2) and the driving shaft (3) are rotatably connected to bearing bushes (7). The bearing bushes (7) are installed on the partition (14). Both ends of the bearing bushes (7) are provided with sealing rings (8).

4. The large flow twin screw air compressor of claim 1, wherein, The drive cavity (13) is provided with a driven tooth (9) and a driving tooth (10). The driven tooth (9) is mounted on the driven shaft (2), and the driving tooth (10) is mounted on the driving shaft (3).

5. The large flow twin screw air compressor of claim 4, wherein, The right end of the drive shaft (3) passes through the housing (1) and is rotatably connected to the housing (1). A drive motor (11) is provided on the outside of the housing (1), and the output end of the drive motor (11) is connected to the drive shaft (3).

6. The large flow twin screw air compressor of claim 1, wherein, Both the female screw (4) and the male screw (5) are coated with a wear-resistant coating.

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