An oil-free dry screw compressor rotor

Abstract

The utility model discloses a kind of oil-free dry screw compressor rotors, including rotor assembly, rotor assembly is made of rotor, and is equipped with heat dissipation through-hole on rotor, it further includes shaft body assembly, shaft body assembly is made of shaft rod arranged on rotor, the end of mutual faraway of shaft rod is all provided with clamping rod, shaft body assembly is based on the shaft rod on rotor, the clamping rod of two ends extension can be accurately butt-jointed air guide component, let air guide component can be stabilized with rotor synchronous operation, not prone to relative sliding, and the threaded rod of clamping rod tail end, again can be adapted with the threaded sleeve of fixed assembly, for subsequent fixed air guide component, limit component displacement provides link foundation, shaft body structure is classified by shaft rod, clamping rod, threaded rod, both realize the orderly link of rotor and external component, and provide support for the stable operation of each component, guarantee the smoothness of rotor overall operation.

Description

Technical Field

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

[0002] Oil-free dry screw compressors are widely used in precision manufacturing, environmental protection and other fields because they do not require lubricating oil to participate in the compression process, thus avoiding oil pollution.

[0003] Existing oil-free dry screw compressors still often use a single shaft to connect the rotor to the compressor body, which can easily lead to axial misalignment during installation, resulting in decreased rotor meshing accuracy and affecting compression efficiency.

[0004] Furthermore, the rotor heat dissipation relies on an external heat dissipation structure, resulting in low heat dissipation efficiency. High temperatures can easily lead to the degradation of rotor material properties. As a further solution of this utility model, the rotor lacks an auxiliary air guiding structure during rotation, making it impossible to enhance the heat dissipation effect by utilizing the rotor's own rotation. Utility Model Content

[0005] The purpose of this invention is to provide an oil-free dry screw compressor rotor to solve the technical problems of existing rotors using a single shaft, which are prone to axial displacement, resulting in decreased accuracy and low heat dissipation efficiency.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An oil-free dry screw compressor rotor includes a rotor assembly, which is composed of a rotor and has heat dissipation holes. It also includes a shaft assembly, which is composed of shafts mounted on the rotor. Each shaft has a locking rod at one end and a threaded rod at the other end.

[0008] As a preferred embodiment of this utility model, limit plates are provided on both sides of the shaft located on the rotor, and the diameter of the limit plates is larger than the diameter of the snap-fit ​​rod.

[0009] The limiting plates on both sides of the rotor shaft, with a diameter larger than that of the snap-fit ​​rod, can fit tightly against the mounting end face of the compressor body, effectively limiting the axial movement of the rotor during operation. This prevents the rotor from experiencing meshing deviation due to displacement, ensuring that the rotor is always in a precise meshing state, reducing operating losses caused by misalignment, and enhancing the stability of the connection between the rotor and the body, making the overall operation of the compressor more stable and reliable.

[0010] As a preferred embodiment of this utility model, both locking rods are provided with air guiding components. The air guiding components are composed of limiting sleeves sleeved on the locking rods. The limiting sleeves and locking rods are interlocked. The limiting sleeves are provided with threaded blades.

[0011] The limiting sleeve of the air guide assembly is fixed to the snap-fit ​​rod and can rotate synchronously with the rotor, driving the conical threaded blades on it to rotate. When the blades rotate, they can guide the airflow to converge towards the rotor, accelerate the airflow around the rotor heat dissipation holes, and work synergistically with the heat dissipation holes to more efficiently remove the heat generated during rotor operation. The above process does not require additional power and relies on the rotor's own rotation to achieve active heat dissipation, effectively preventing the rotor from experiencing performance degradation due to high temperature and ensuring the continuous and stable operation of the compressor.

[0012] As a further embodiment of this utility model, the threaded blade has a tapered structure, and the tapered angle of the threaded blade increases sequentially from both sides inward.

[0013] The threaded blades adopt a conical structure with an angle that increases inward from both sides. As the rotor rotates, they can guide the airflow towards the center of the rotor, allowing the airflow to act more precisely around the rotor. The airflow guidance design can accelerate the airflow around the rotor's heat dissipation holes, forming an efficient combination with the heat dissipation holes, and more effectively removing the heat generated during rotor operation, preventing the rotor from being affected by high temperature. At the same time, no additional power is required; active heat dissipation can be achieved by relying on the rotor's own rotation, making the heat dissipation process more in line with the compressor's operating rhythm.

[0014] As a preferred embodiment of this utility model, each of the two threaded rods is provided with a fixing component, which is composed of a threaded sleeve that is threadedly connected to the threaded rod.

[0015] The fixing components on the two threaded rods are installed by threaded sleeves and threaded connections to the threaded rods. This securely locks the position of the air guide components, preventing them from shifting during rotor rotation. The tightness of the threaded connection reduces the loose space between components. In conjunction with the subsequent limiting baffle, it can also indirectly absorb the vibration generated by the rotor operation, preventing the air guide components from loosening due to vibration. This makes the entire rotor structure more stable during operation and ensures smooth heat dissipation and compression processes.

[0016] As a further embodiment of this utility model, a limiting baffle is provided on the side of the threaded sleeve near the threaded blade, the limiting baffle is in contact with the threaded blade, and the diameter of the limiting baffle is larger than the diameter of the limiting sleeve.

[0017] The limiting baffle on the side of the threaded sleeve near the threaded blades can firmly hold the limiting sleeve of the air guide assembly in contact with the threaded blades. Because the diameter of the limiting baffle is larger than that of the limiting sleeve, it can fully cover the end face of the limiting sleeve, preventing the air guide assembly from axially shifting when the rotor rotates. At the same time, the contact state can also buffer the vibration generated by the rotor operation, reduce the risk of loosening between the air guide assembly and the shaft, and ensure that the air guide assembly always follows the rotor stably, ensuring the continuous and stable heat dissipation effect.

[0018] Compared with the prior art, the beneficial effects of the oil-free dry screw compressor rotor provided by this utility model are as follows:

[0019] This utility model uses a shaft assembly based on the shaft on the rotor. The snap-fit ​​rods extending from both ends can precisely connect to the air guide assembly, allowing the air guide component to operate stably and synchronously with the rotor, making it less prone to relative slippage. The threaded rod at the end of the snap-fit ​​rod can also be adapted to the threaded sleeve of the fixing component, providing a connection basis for subsequent fixing of the air guide assembly and limiting component displacement. The entire shaft structure, through the hierarchical design of the shaft, snap-fit ​​rod, and threaded rod, not only achieves the orderly connection between the rotor and external components, but also provides support for the stable operation of each component, ensuring the smooth operation of the rotor as a whole. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only examples of embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram of the disassembled structure of an embodiment of the present utility model;

[0023] Figure 3 This is a schematic diagram of the rotor assembly in an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the shaft assembly in an embodiment of the present utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the air guide component and the fixing component in the embodiment of this utility model.

[0026] Figure label:

[0027] 1. Rotor assembly; 11. Rotor; 12. Heat dissipation through-hole;

[0028] 2. Air guide assembly; 21. Limiting sleeve; 22. Threaded blades;

[0029] 3. Fixing components; 31. Limiting baffle; 32. Threaded sleeve;

[0030] 4. Shaft assembly; 41. Shaft rod; 42. Limiting plate; 43. Snap-fit ​​rod; 44. Threaded rod. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.

[0032] In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of the present invention 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 the embodiments of the present invention.

[0033] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an integral connection, or a detachable connection; they can refer to the internal connection of two components; they can refer to a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present invention should be understood according to the specific circumstances.

[0034] See Figure 1-5 As shown in the figure, an oil-free dry screw compressor rotor of this utility model includes a rotor assembly 1, which is composed of a rotor 11, and the rotor 11 is provided with heat dissipation through holes 12.

[0035] It also includes a shaft assembly 4, which is composed of shafts 41 mounted on the rotor 11. Each shaft 41 has a locking rod 43 at one end and a threaded rod 44 at the other end. Based on the shafts 41 on the rotor 11, the locking rods 43 extending from both ends of the shaft assembly 4 can precisely connect to the air guide assembly 2, allowing the air guide component to operate stably and synchronously with the rotor 11 without relative slippage. The threaded rod 44 at the end of the locking rod 43 can also be adapted to the threaded sleeve 32 of the fixing component 3, providing a connection basis for fixing the air guide assembly 2 and limiting component displacement. The entire shaft structure, through the hierarchical design of shafts 41, locking rods 43, and threaded rods 44, not only achieves the orderly connection between the rotor 11 and external components, but also provides support for the stable operation of each component, ensuring the smooth operation of the rotor 11 as a whole.

[0036] Limiting plates 42 are provided on both sides of the rotor 11 on the shaft 41. The diameter of the limiting plates 42 is larger than the diameter of the snap-fit ​​rod 43. The limiting plates 42 on the shaft 41 on both sides of the rotor 11 can fit tightly with the mounting end face of the compressor body due to their larger diameter. This effectively restricts the axial movement of the rotor 11 during operation, avoids meshing deviation of the rotor 11 due to displacement, ensures that the rotor 11 is always in a precise meshing state, reduces operating losses caused by misalignment, and enhances the stability of the connection between the rotor 11 and the body, making the overall operation of the compressor more stable and reliable.

[0037] Both locking rods 43 are equipped with air guide components 2, which consist of limiting sleeves 21 sleeved on the locking rods 43. The limiting sleeves 21 and locking rods 43 are interlocked. The limiting sleeves 21 are equipped with threaded blades 22. The limiting sleeves 21 and locking rods 43 are locked and fixed, and can rotate synchronously with the rotor 11, driving the conical threaded blades 22 on them to rotate. When the blades rotate, they can guide the airflow to converge towards the rotor 11, accelerate the airflow around the heat dissipation holes 12 of the rotor 11, and form a synergistic effect with the heat dissipation holes 12 to more efficiently remove the heat generated by the rotor 11 during operation. The above process does not require additional power and relies on the rotation of the rotor 11 to achieve active heat dissipation, effectively avoiding the performance degradation of the rotor 11 due to high temperature and ensuring the continuous and stable operation of the compressor.

[0038] The threaded blade 22 has a conical structure, and the conical angle of the threaded blade 22 increases from both sides inward. The threaded blade 22 adopts a conical structure and the angle increases from both sides inward. When the rotor 11 rotates, it can guide the airflow to converge towards the center of the rotor 11, so that the airflow can act more accurately around the rotor 11. The airflow guidance design can accelerate the airflow around the heat dissipation hole 12 of the rotor 11, and form an efficient cooperation with the heat dissipation hole 12, so as to more fully remove the heat generated by the rotor 11 during operation, and prevent the rotor 11 from being affected by high temperature. At the same time, no additional power is required. Active heat dissipation can be achieved by relying on the rotation of the rotor 11 itself, so that the heat dissipation process is more in line with the operating rhythm of the compressor.

[0039] Each of the two threaded rods 44 is equipped with a fixing component 3, which is composed of a threaded sleeve 32. The threaded sleeve 32 is threadedly connected to the threaded rod 44. The fixing components 3 on the two threaded rods 44 are installed through the threaded connection between the threaded sleeve 32 and the threaded rod 44, which can firmly lock the position of the air guide component 2 and prevent it from shifting when the rotor 11 rotates. The tightness of the threaded connection can reduce the loose space between components. At the same time, in conjunction with the subsequent limiting baffle 31, it can also indirectly absorb the vibration generated by the operation of the rotor 11, prevent the air guide component 2 from loosening due to vibration, make the entire rotor 11 structure more stable during operation, and ensure the smooth operation of heat dissipation and compression processes.

[0040] A limiting baffle 31 is provided on the side of the threaded sleeve 32 near the threaded blade 22. The limiting baffle 31 contacts the threaded blade 22. The diameter of the limiting baffle 31 is larger than the diameter of the limiting sleeve 21. The limiting baffle 31 on the side of the threaded sleeve 32 near the threaded blade 22 can firmly abut against the limiting sleeve 21 of the air guide assembly 2 by contacting the threaded blade 22. Because the diameter of the limiting baffle 31 is larger than that of the limiting sleeve 21, it can fully cover the end face of the limiting sleeve 21, preventing the air guide assembly 2 from axially shifting when the rotor 11 rotates. At the same time, the contact state can also buffer the vibration generated by the operation of the rotor 11, reduce the risk of loosening between the air guide assembly 2 and the shaft, and ensure that the air guide assembly 2 always stably follows the rotor 11, ensuring the continuous and stable heat dissipation effect.

[0041] In this embodiment of the invention, the shaft assembly 4 is based on the shaft 41 on the rotor 11. The locking rods 43 at both ends of the shaft assembly 4 can be precisely locked with the limiting sleeve 21 of the air guide assembly 2, so that the air guide assembly 2 rotates synchronously with the rotor 11. The threaded rod 44 at the end of the locking rod 43 can be threadedly connected with the threaded sleeve 32 of the fixing assembly 3. At the same time, the limiting plates 42 on both sides of the rotor 11 on the shaft 41 fit against the mounting end face of the compressor body, restricting the axial movement of the rotor 11 and ensuring precise meshing of the rotor 11. When the conical threaded blades 22 in the air guide assembly 2 rotate, they guide the airflow to converge towards the rotor 11. Together with the heat dissipation holes 12 on the rotor 11, they accelerate the dissipation of heat. After the threaded sleeve 32 of the fixing assembly 3 is fixed by threaded connection, the limiting baffle 31 on one side of it contacts the threaded blades 22, abutting against the limiting sleeve 21 of the air guide assembly 2, preventing the air guide assembly 2 from shifting and buffering vibration, and finally achieving stable operation and efficient heat dissipation of the rotor 11.

[0042] The foregoing has shown and described the basic principles of the present invention. The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. The above embodiments and descriptions in the specification are only illustrative of the principles of the present invention. Any modifications, equivalent substitutions, and improvements made within the scope of the present invention without departing from the scope of the present invention should be included within the protection scope of the present invention.

Claims

1. An oil-free dry screw compressor rotor, comprising a rotor assembly (1), the rotor assembly (1) being composed of a rotor (11), wherein the rotor (11) is provided with heat dissipation through holes (12), characterized in that: It also includes a shaft assembly (4), which is composed of shafts (41) disposed on the rotor (11). Each shaft (41) is provided with a snap-fit ​​rod (43) at one end away from each other, and each snap-fit ​​rod (43) is provided with a threaded rod (44) at one end away from each other.

2. The rotor of an oil-free dry screw compressor according to claim 1, characterized in that: Limiting plates (42) are provided on both sides of the rotor (11) on the shaft (41), and the diameter of the limiting plates (42) is larger than the diameter of the snap-fit ​​rod (43).

3. The rotor of an oil-free dry screw compressor according to claim 1, characterized in that: Both of the clamping rods (43) are provided with air guide components (2). The air guide components (2) are composed of limiting sleeves (21) sleeved on the clamping rods (43). The limiting sleeves (21) and the clamping rods (43) are interlocked. The limiting sleeves (21) are provided with threaded blades (22).

4. The rotor of an oil-free dry screw compressor according to claim 3, characterized in that: The threaded blade (22) has a conical structure, and the conical angle of the threaded blade (22) increases sequentially from both sides inward.

5. The rotor of an oil-free dry screw compressor according to claim 1, characterized in that: Both of the threaded rods (44) are provided with a fixing component (3), which is composed of a threaded sleeve (32) and is threadedly connected to the threaded rod (44).

6. The rotor of an oil-free dry screw compressor according to claim 5, characterized in that: A limiting baffle (31) is provided on the side of the threaded sleeve (32) near the threaded blade (22). The limiting baffle (31) is in contact with the threaded blade (22). The diameter of the limiting baffle (31) is larger than the diameter of the limiting sleeve (21).

Images