Main shaft system of single-screw water-lubricated compressor

Abstract

The utility model discloses a single-screw water lubrication compressor spindle shaft system, and belongs to the field of compressor spindles, the single-screw water lubrication compressor spindle shaft system comprises a shaft rod, a connecting disc is fixedly mounted on the outer edge of the shaft rod, a first spindle bearing seat is fixedly mounted on the outer edge of the connecting disc, a sealing ring is mounted on the outer edge of the shaft rod, and a first static ring is fixedly mounted on the outer edge of the shaft rod; a first movable ring is installed on the outer edge of the shaft rod, an impeller is fixedly installed on the outer edge of the shaft rod, a gland is installed on one side of the shaft rod, a second static ring and a second movable ring are fixedly installed on the outer edge of the shaft rod, a second main shaft bearing seat is fixedly installed on the outer edge of the second static ring, and a pouring opening is formed in the inner wall of the shaft rod. A circular groove is formed in the outer edge of the shaft rod; water is injected into the inner wall of the filling opening to enter the inner cavity of the shaft rod, so that the shaft rod can be lubricated and cooled, the number of mechanical seals is reduced to the maximum extent, and the shaft rod is conveniently connected with the water pipe connector through the arrangement of the circular groove.

Description

Technical Field

[0001] This application relates to the field of compressor spindle technology, and more particularly to a spindle system for a single-screw water-lubricated compressor. Background Technology

[0002] The compressor spindle is a crucial component of the compressor, responsible for transmitting power and rotating the rotor. The spindle constitutes the rotating part of the compressor, transmitting power via a motor to rotate the rotor inside the compressor, thus completing the compression and transmission of gas.

[0003] In the petrochemical industry, the compressed medium is mostly flammable, explosive, or even highly toxic, which places high demands on the sealing performance of the compressor. Currently, compressors mainly use mechanical seals or dry gas seals, which are not very reliable and are expensive. In addition, dry gas seals or mechanical seals are prone to contaminating the compressed medium due to leakage, making them unsuitable for applications with high operating requirements. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides a main shaft system for a single-screw water-lubricated compressor, which overcomes the shortcomings of the prior art and aims to solve the problems in the background art.

[0005] To achieve the above objectives, this application adopts the following technical solution: a main shaft system for a single-screw water-lubricated compressor, comprising a shaft, a connecting disc fixedly mounted on the outer edge of the shaft, a main shaft bearing seat fixedly mounted on the outer edge of the connecting disc, a sealing ring mounted on the outer edge of the shaft, a stationary ring fixedly mounted on the outer edge of the shaft, a rotating ring fixedly mounted on the outer edge of the shaft, an impeller fixedly mounted on the outer edge of the shaft, a pressure cap mounted on one side of the shaft, a second stationary ring and a second rotating ring fixedly mounted on the outer edge of the shaft, a second main shaft bearing seat fixedly mounted on the outer edge of the second stationary ring, a filling port opened on the inner wall of the shaft, and a circular groove opened on the outer edge of the shaft.

[0006] In a preferred embodiment, the sealing ring and the main shaft bearing housing are tightly fitted together on one side of the bearing housing, and the sealing ring is made of rubber.

[0007] By adopting the above technical solution, the sealing performance of the spindle bearing housing can be guaranteed, thereby ensuring that dust and impurities will not adhere to the inner wall of the spindle bearing housing during equipment operation, and thus ensuring the stability of the spindle bearing housing during operation.

[0008] In a preferred embodiment, abutment ring one and abutment ring two are symmetrically fixedly installed on the outer edge of the shaft, and the impeller is located at the middle position of abutment ring one and abutment ring two.

[0009] By adopting the above technical solution, the abutting ring one and abutting ring two can be used to abut the impeller, ensuring that the impeller can be stably set at the outer edge of the shaft, and ensuring that it will not easily shake or shift in position during operation.

[0010] In a preferred embodiment, the inner wall of the spindle bearing housing abuts against the outer edge of the stationary ring, and the outer edge of the moving ring fits against the inner wall of the abutment ring.

[0011] By adopting the above technical solution, the fit of the device after overall assembly and welding can be guaranteed, thus ensuring that there will be no large gaps after assembly, and thus ensuring the overall robustness of the device.

[0012] In a preferred embodiment, the outer edges of both the moving ring two and the stationary ring two near the moving ring two are in contact with the inner wall of the abutting ring two.

[0013] By adopting the above technical solution, the tightness of the overall assembly of the side of the abutment ring two near the pressure cover can be guaranteed, while the smoothness of the spindle bearing housing one and the spindle bearing housing two when rotating synchronously can be guaranteed.

[0014] In a preferred embodiment, a protrusion is fixedly installed on the outer edge of the shaft, and the left side of the impeller abuts against the right side of the protrusion.

[0015] By adopting the above technical solution, the impeller can be supported, ensuring that the impeller will not easily shift its position during installation and welding, thus improving stability and ensuring the accuracy of the combined welding.

[0016] The beneficial effects of this application are:

[0017] 1. The main shaft system of this single-screw water-lubricated compressor allows water to enter the inner cavity of the shaft through the inner wall of the injection port, thereby lubricating the shaft and cooling it, minimizing the number of mechanical seals, and facilitating the connection between the shaft and the water pipe joint by setting a circular groove.

[0018] 2. The main shaft system of this single-screw water-lubricated compressor is achieved by sleeved impeller onto the outer edge of the shaft, and then sleeved abutment ring one and abutment ring two onto both sides of the impeller on the outer edge of the shaft until the side of the impeller closest to abutment ring one abuts against the outer side of the protrusion. This ensures the fit of the entire assembly after welding, thus ensuring that there will be no large gaps after assembly, and thus ensuring the overall robustness of the assembly. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall cross-sectional structure of this application;

[0020] Figure 2This is a partial structural diagram of this application;

[0021] Figure 3 For the purposes of this application Figure 2 Enlarged structural diagram at point A in the middle.

[0022] The following are the labels in the diagram: 1. Shaft; 2. Connecting disc; 3. Main shaft bearing housing 1; 4. Sealing ring; 5. Stationary ring 1; 6. Rotary ring 1; 7. Pressure cap; 8. Abutment ring 1; 9. Abutment ring 2; 10. Impeller; 11. Main shaft bearing housing 2; 12. Stationary ring 2; 13. Rotary ring 2; 14. Filling port; 15. Circular groove; 16. Protrusion. Detailed Implementation

[0023] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0024] Reference Figure 1-3 A single-screw water-lubricated compressor main shaft system includes a shaft 1, a connecting plate 2 fixedly installed on the outer edge of the shaft 1, a main shaft bearing seat 3 fixedly installed on the outer edge of the connecting plate 2, a sealing ring 4 installed on the outer edge of the shaft 1, a stationary ring 5 fixedly installed on the outer edge of the shaft 1, a rotating ring 6 fixedly installed on the outer edge of the shaft 1, an impeller 10 fixedly installed on the outer edge of the shaft 1, a pressure cover 7 installed on one side of the shaft 1, a stationary ring 12 and a rotating ring 13 fixedly installed on the outer edge of the shaft 1, a main shaft bearing seat 11 fixedly installed on the outer edge of the stationary ring 12, a filling port 14 opened on the inner wall of the shaft 1, and a circular groove 15 opened on the outer edge of the shaft 1.

[0025] See Figure 1 and Figure 2 The sealing ring 4 and the side of the main spindle bearing housing 3 that are close to each other are tightly fitted. The sealing ring 4 is made of rubber, which ensures the sealing performance of the main spindle bearing housing 3. This ensures that dust and impurities will not stick to the inner wall of the main spindle bearing housing 3 during operation, thus ensuring the stability of the main spindle bearing housing 3 during operation.

[0026] See Figure 1 Abutment ring 1 8 and abutment ring 2 9 are symmetrically fixedly installed on the outer edge of shaft 1. Impeller 10 is located in the middle position of abutment ring 1 8 and abutment ring 2 9, so that abutment ring 1 8 and abutment ring 2 9 can abut against impeller 10, ensuring that impeller 10 can be stably set on the outer edge of shaft 1, and ensuring that it will not easily shake or shift in position during operation.

[0027] See Figure 1 and Figure 2The inner wall of the main shaft bearing housing 3 abuts against the outer edge of the stationary ring 5, and the outer edge of the moving ring 6 fits against the inner wall of the abutment ring 8, which ensures the fit of the whole assembly after welding, thus ensuring that there will be no large gap after assembly, and thus ensuring the overall firmness of the device.

[0028] See Figure 1 - Figure 2 The outer edges of the moving ring 13 and the stationary ring 12 near the moving ring 13 are both in contact with the inner wall of the abutting ring 9, which ensures the tightness of the overall assembly of the abutting ring 9 near the pressure cover 7, and at the same time ensures the smoothness of the main shaft bearing housing 13 and the main shaft bearing housing 21 when rotating synchronously.

[0029] See Figure 2 A protrusion 16 is fixedly installed on the outer edge of the shaft 1. The left side of the impeller 10 abuts against the right side of the protrusion 16, which can support the impeller 10 and ensure that the impeller 10 will not easily shift its position when it is installed and welded, thus improving stability and ensuring the accuracy of the combined welding.

[0030] Working principle: When using this device, firstly, the impeller 10 can be fitted onto the outer edge of the shaft 1. Then, the first abutment ring 8 and the second abutment ring 9 are fitted onto both sides of the impeller 10 on the outer edge of the shaft 1 until the side of the impeller 10 closest to the first abutment ring 8 abuts against the outer side of the protrusion 16. This ensures the fit of the device after overall assembly and welding, thus ensuring that there will be no large gap after assembly, and thus ensuring the overall firmness of the device. Then, the first main shaft bearing seat 3, the first stationary ring 5, the second main shaft bearing seat 11, and the second stationary ring 12 can be installed onto the outer edge of the shaft 1 in sequence. Water is injected into the inner cavity of the shaft 1 through the inner wall of the injection port 14, which can be used for lubrication of the shaft 1 and for cooling.

[0031] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] The present invention has been described above with reference to specific embodiments. However, those skilled in the art should understand that these descriptions are exemplary and not intended to limit the scope of protection of the present invention. Those skilled in the art can make various modifications and variations to the present invention based on its spirit and principles, and these modifications and variations are also within the scope of the present invention.

Claims

1. A main shaft system for a single-screw water-lubricated compressor, comprising a shaft (1), characterized in that, A connecting plate (2) is fixedly installed on the outer edge of the shaft (1). A main shaft bearing seat (3) is fixedly installed on the outer edge of the connecting plate (2). A sealing ring (4) is installed on the outer edge of the shaft (1). A stationary ring (5) is fixedly installed on the outer edge of the shaft (1). A moving ring (6) is installed on the outer edge of the shaft (1). An impeller (10) is fixedly installed on the outer edge of the shaft (1). A pressure cap (7) is installed on one side of the shaft (1). A stationary ring (12) and a moving ring (13) are fixedly installed on the outer edge of the shaft (1). A main shaft bearing seat (11) is fixedly installed on the outer edge of the stationary ring (12). A filling port (14) is opened on the inner wall of the shaft (1). A circular groove (15) is opened on the outer edge of the shaft (1).

2. The main shaft system of a single-screw water-lubricated compressor according to claim 1, characterized in that, The sealing ring (4) and the main shaft bearing housing (3) are closely fitted together on the side that is close to each other. The sealing ring (4) is made of rubber.

3. The main shaft system of a single-screw water-lubricated compressor according to claim 1, characterized in that, The shaft (1) is symmetrically fixed with abutment ring one (8) and abutment ring two (9) on its outer edge, and the impeller (10) is located in the middle position between abutment ring one (8) and abutment ring two (9).

4. The main shaft system of a single-screw water-lubricated compressor according to claim 1, characterized in that, The inner wall of the main shaft bearing housing (3) abuts against the outer edge of the stationary ring (5), and the outer edge of the moving ring (6) fits against the inner wall of the abutting ring (8).

5. The main shaft system of a single-screw water-lubricated compressor according to claim 1, characterized in that, The outer edges of the moving ring 2 (13) and the stationary ring 2 (12) near the moving ring 2 (13) are both in contact with the inner wall of the abutting ring 2 (9).

6. The main shaft system of a single-screw water-lubricated compressor according to claim 1, characterized in that, A protrusion (16) is fixedly installed on the outer edge of the shaft (1), and the left side of the impeller (10) abuts against the right side of the protrusion (16).

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