A screw air compressor rotor

Abstract

The invention discloses a screw air compressor rotor, which relates to the technical field of air compressor rotors. Its technical highlights include a rotor shaft, a rotor module is arranged in the middle of the outer wall of the rotor shaft, an installation cavity is opened in the inner ring of one end of the rotor module, a balance adjustment component is installed inside the installation cavity and at the outer wall of the rotor shaft, and a centrifugal stop component is arranged on the inner side of the balance adjustment component; the balance adjustment component includes a first annular plate fixedly installed on the outer wall of the rotor shaft, and a second annular plate is rotatably installed inside the installation cavity and at a position corresponding to the first annular plate. The technical effect is that the invention arranges a balance adjustment component and a balance structure position guiding component, and when adjusting the dynamic balance state of the rotor, the sliding rod and the counterweight adjustment block are used to perform quasi-sinusoidal sliding along the sliding groove as a whole, thereby adjusting the overall rotor center of gravity position, so that the rotor is restored to a balanced state.

Description

Technical Field

[0001] The invention relates to the technical field of air compressor rotors, in particular to a screw air compressor rotor. Background Art

[0002] In the modern industrial field, air compressors are an extremely important general-purpose equipment, widely used in many industries such as machinery manufacturing, chemical industry, energy, mining, etc., shouldering the important task of providing a stable compressed air source for the production process. The air compressor rotor is undoubtedly one of the core components of the air compressor, and its performance is directly related to the overall operating efficiency, reliability and energy consumption level of the air compressor.

[0003] During the use of current air compressor rotors, the high-speed rotation of the rotors will cause wear at the rotor contact points, resulting in changes in the balance of the rotors during rotation, causing vibrations during the rotation of the rotors. It is necessary to perform a dynamic balancing test and drill holes in the outer ring of the rotor to adjust the rotor weight distribution in order to restore the rotor's balance. However, repeated use of this dynamic balancing adjustment method will cause the rotor structure to lose strength. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a screw air compressor rotor that can adjust the dynamic balance of the rotor repeatedly without damaging the rotor structure, thereby avoiding a decrease in the firmness of the rotor structure.

[0005] To achieve the above object, the present invention provides the following technical solution: a screw air compressor rotor, comprising a rotor shaft, a rotor module is arranged in the middle of the outer wall of the rotor shaft, an installation cavity is opened in the inner ring of one end of the rotor module, a balance adjustment component is installed inside the installation cavity and at the outer wall of the rotor shaft, and a centrifugal anti-rotation component is arranged inside the balance adjustment component;

[0006] The balance adjustment component comprises a first annular plate fixedly mounted on the outer wall of the rotor shaft, a second annular plate is rotatably mounted inside the mounting cavity and corresponding to the first annular plate, a fine-tuning structure is arranged on one side of the first annular plate, and a balance structure position guiding component is arranged on one side of the second annular plate;

[0007] The fine-tuning structure includes an adjusting gear rotatably arranged on one side of the first annular plate, an adjusting knob rotatably installed on one side of the first annular plate, the adjusting knob is a damping rotation to prevent the adjusting knob from rotating easily and causing the position of the second annular plate to change, and the inner wall of the second annular plate is provided with inner ring teeth used in conjunction with the adjusting gear;

[0008] The balancing structure position guiding component includes an annular connecting plate fixedly mounted on one side of the second annular plate, a sliding rod is slidably mounted on one side of the annular connecting plate, a counterweight adjustment block is fixedly arranged on the outer wall of the sliding rod, a sliding groove for cooperating with the sliding rod is also provided on one side of the annular connecting plate, and a track groove for cooperating with the sliding rod is provided on one side of the first annular plate.

[0009] Preferably, a cover groove is further opened at one end of the installation cavity, and an end cover plate is connected to the cover groove to seal the installation cavity. It should be noted that the end cover plate adopts a more common screw fastening method, which will not be repeated here.

[0010] Preferably, a gear installation groove is provided inside the first annular plate and corresponding to the adjusting gear, and the two sides of the gear installation groove are through-connected for installing the adjusting gear, and the adjusting gear corresponds to the position of the inner ring gear, and the adjusting gear is meshed and connected with the inner ring gear.

[0011] Preferably, one end of the adjusting knob is fixedly connected to the rotating shaft end of the adjusting gear, an adjusting slot is provided at one end of the adjusting knob, and a docking hole is provided on one side of the end cover plate corresponding to the adjusting knob to facilitate the rotation adjustment of the adjusting gear.

[0012] Preferably, the counterweight adjustment block is circular, so as to ensure that after the balance adjustment is completed, no change in gravity balance will occur.

[0013] Preferably, the track groove is a quasi-sine track connected end to end, which is used to facilitate the adjustment of the balance state of the rotor after wear. The quasi-sine design can refine the overall adjustment range and better realize dynamic balance adjustment.

[0014] Preferably, the centrifugal anti-rotation component includes a plurality of limiting plugs annularly arranged on the outer wall of the first annular plate, and hidden grooves are provided on the outer wall of the first annular plate at positions corresponding to the limiting plugs.

[0015] Preferably, a spring is installed inside the hidden groove, and one end of the spring is fixedly connected to the limiting plug block, so as to provide a rebound force for the limiting plug block after the centrifugal force is lost.

[0016] Preferably, one end of the limiting plug block is provided with an insertion bevel, which is adapted to the inner recess of the inner ring tooth and is used to limit the position of the second annular plate to prevent it from rotating during high-speed rotation, causing changes in the overall balance and causing vibration of the rotor.

[0017] Compared with the prior art, the present invention provides a screw air compressor rotor, which has the following beneficial effects: the present invention sets a balance adjustment component and a balance structure position guiding component, and when adjusting the dynamic balance state of the rotor, the sliding rod and the counterweight adjustment block are used to slide quasi-sinusoidally along the sliding groove as a whole, thereby adjusting the center of gravity position of the overall rotor, so that the rotor can be restored to a balanced state, and there is no need to drill holes on the outer ring of the rotor module to adjust it, repeatedly damage the structure of the rotor module, and cause the structural firmness of the rotor module to decrease; the setting of the centrifugal anti-rotation component can cleverly utilize the centrifugal force to limit the position of the second annular plate during rotation, thereby avoiding changes in the balance state of the rotor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure after the end cover plate of the present invention is disassembled;

[0020] Figure 3 It is a schematic diagram of the partial disassembly structure of the present invention;

[0021] Figure 4 For the present invention Figure 3 The enlarged schematic diagram at A in the middle;

[0022] Figure 5 It is a schematic diagram of the structure of the other side of the first annular plate in the present invention;

[0023] Figure 6 is a schematic structural diagram of the first annular plate in the present invention;

[0024] Figure 7 It is a schematic diagram of the structure of the end cover plate in the present invention;

[0025] Figure 8 It is a schematic diagram of the cross-sectional structure of the first annular plate in the present invention.

[0026] In the figure: 1, rotor shaft; 11, rotor module;

[0027] 2. End cover plate; 201. Mounting foot plate; 21. First annular plate; 22. Second annular plate; 23. Mounting cavity; 24. Cover connection groove; 25. Annular connecting plate;

[0028] 3. Sliding rod; 31. Counterweight adjustment block; 32. Sliding slot; 33. Track slot;

[0029] 4. Adjustment knob; 41. Adjustment gear; 42. Gear mounting slot; 43. Inner ring gear; 44. Docking hole;

[0030] 5. Limiting plug; 51. Hidden slot; 52. Spring; 53. Insertion slope. DETAILED DESCRIPTION

[0031] In the present invention, unless otherwise specified, the directions used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0032] See also Figure 1-8 , the present invention provides a technical solution for a screw air compressor rotor:

[0033] Embodiment 1, a screw air compressor rotor, comprising a rotor shaft 1, a rotor module 11 is arranged in the middle of the outer wall of the rotor shaft 1, an installation cavity 23 is opened in the inner ring of one end of the rotor module 11, a balancing adjustment component is installed inside the installation cavity 23 and located on the outer wall of the rotor shaft 1, and a centrifugal anti-rotation component is arranged inside the balancing adjustment component;

[0034] The balance adjustment component includes a first annular plate 21 fixedly mounted on the outer wall of the rotor shaft 1, a second annular plate 22 is rotatably mounted inside the mounting cavity 23 and corresponding to the first annular plate 21, a fine-tuning structure is arranged on one side of the first annular plate 21, and a balance structure position guide component is arranged on one side of the second annular plate 22;

[0035] The fine-tuning structure includes an adjusting gear 41 rotatably arranged on one side of the first annular plate 21. An adjusting knob 4 is rotatably installed on one side of the first annular plate 21. The adjusting knob 4 is a damping rotation to prevent the adjusting knob 4 from rotating easily, causing the position of the second annular plate 22 to change. The inner wall of the second annular plate 22 is provided with an inner ring tooth 43 used in conjunction with the adjusting gear 41.

[0036] The balancing structure position guiding component includes an annular connecting plate 25 fixedly mounted on one side of the second annular plate 22, a sliding rod 3 is slidably mounted on one side of the annular connecting plate 25, a counterweight adjustment block 31 is fixedly arranged on the outer wall of the sliding rod 3, a sliding groove 32 used in conjunction with the sliding rod 3 is also provided on one side of the annular connecting plate 25, a track groove 33 used in conjunction with the sliding rod 3 is provided on one side of the first annular plate 21, a cover groove 24 is also provided at one end of the installation cavity 23, an end cover plate 2 is covered at the cover groove 24 for sealing the installation cavity 23, a plurality of mounting foot plates 201 are installed in an array on the outer wall of the end cover plate 2, and a plurality of mounting foot plates 201 are installed on the outer wall of the end cover plate 2. It should be noted that the end cover plate 2 adopts a more common screw fastening method, which will not be elaborated here. A gear mounting groove 42 is provided inside the first annular plate 21 and corresponds to the adjusting gear 41. The gear mounting groove 42 has through-holes on both sides for installing the adjusting gear 41. The adjusting gear 41 corresponds to the position of the inner ring gear 43, and the adjusting gear 41 is meshed with the inner ring gear 43. One end of the adjusting knob 4 is fixedly connected to the rotating shaft end of the adjusting gear 41, and an adjusting notch is provided at one end of the adjusting knob 4. A docking hole 44 is provided on one side of the end cover plate 2 and corresponds to the adjusting knob 4 to facilitate the rotation adjustment of the adjusting gear 41.

[0037] In the second embodiment, the counterweight adjustment block 31 is circular, which is used to ensure that after the balance adjustment is completed, there will be no change in the gravity balance. The track groove 33 is a quasi-sine track connected end to end, which is used to facilitate the adjustment of the balance state of the rotor after wear. The quasi-sine design can refine the overall adjustment range and better realize dynamic balance adjustment.

[0038] Embodiment three, the centrifugal anti-rotation component includes a plurality of limit plugs 5 arranged in an annular shape on the outer wall of the first annular plate 21, and the outer wall of the first annular plate 21 and the corresponding positions of the limit plugs 5 are provided with hidden grooves 51, and the interior of the hidden grooves 51 is provided with springs 52, and one end of the spring 52 is fixedly connected to the limit plug 5, and is used to provide a rebound force for the limit plug 5 after the centrifugal force is lost. An insertion bevel 53 is provided at one end of the limit plug 5, and the insertion bevel 53 is adapted to the inner recess of the inner ring tooth 43, and is used to limit the position of the second annular plate 22 to prevent it from rotating during high-speed rotation, causing changes in the overall balance and causing vibration of the rotor.

[0039] When used specifically, the present invention is used as a screw air compressor rotor. During use, when the rotor vibrates abnormally, the rotor only needs to be removed and a dynamic balance test is performed on a dynamic balance test instrument. After the test is completed, the adjusting tool is inserted into the adjusting notch of the adjusting knob 4, and the adjusting knob 4 is rotated to drive the adjusting gear 41 to rotate, and the adjusting gear 41 is meshed with the inner ring gear 43 to cause the second annular plate 22 to rotate. In the process of the second annular plate 22 rotating, the annular connecting plate 25 is also driven to rotate. While rotating, the sliding rod 3 will slide along the track of the track groove 33. Due to the sine-like design of the track groove 33, the sliding rod 3 and the counterweight adjustment block 31 will slide back and forth along the sliding groove 32 as a whole, so as to adjust the position of the counterweight adjustment block 31, thereby adjusting the position of the center of gravity of the rotor as a whole. Through continuous adjustment and testing with a dynamic balancing tester, the balance state of the rotor is restored. There is no need to perform hole punching and adjustment on the outer ring of the rotor module 11, which repeatedly damages the structure of the rotor module 11 and causes the structural firmness of the rotor module 11 to decrease.

[0040] After the dynamic balancing adjustment is completed, during the subsequent rotation of the rotor, the limit plug 5 will slide outward under the action of centrifugal force and be inserted into the recess between the inner ring teeth 43. At the same time, the spring 52 will be stretched to complete the position limitation of the second annular plate 22 to prevent the second annular plate 22 from rotating during high-speed rotation, causing a change in the balance state of the rotor. When the rotor stops rotating, the limit plug 5 will be driven to retract into the hidden groove 51 under the action of the rebound force of the spring 52, which will not affect the subsequent balance adjustment.

[0041] The dynamic balance test instrument adopts the dynamic balance test instrument commonly used in the art, and it only needs to be able to realize the dynamic balance detection of rotation, and no specific limitation is made in the present invention.

[0042] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. A screw air compressor rotor, comprising a rotor shaft (1), a rotor module (11) being arranged in the middle of an outer wall of the rotor shaft (1), characterized in that: An installation cavity (23) is provided in the inner ring of one end of the rotor module (11), a balance adjustment component is installed inside the installation cavity (23) and on the outer wall of the rotor shaft (1), and a centrifugal anti-rotation component is provided inside the balance adjustment component; The balance adjustment component comprises a first annular plate (21) fixedly mounted on the outer wall of the rotor shaft (1); a second annular plate (22) is rotatably mounted inside the mounting cavity (23) and at a position corresponding to the first annular plate (21); a fine adjustment structure is provided on one side of the first annular plate (21); and a balance structure position guide component is provided on one side of the second annular plate (22); The fine-tuning structure comprises an adjusting gear (41) rotatably arranged on one side of the first annular plate (21); an adjusting knob (4) is rotatably mounted on one side of the first annular plate (21); the adjusting knob (4) is a damping rotation to prevent the adjusting knob (4) from rotating easily and causing a position change of the second annular plate (22); and an inner ring tooth (43) is arranged on the inner wall of the second annular plate (22) for use with the adjusting gear (41); The balancing structure position guiding component comprises an annular connecting plate (25) fixedly mounted on one side of the second annular plate (22); a sliding rod (3) is slidably mounted on one side of the annular connecting plate (25); a counterweight adjustment block (31) is fixedly arranged on the outer wall of the sliding rod (3); a sliding groove (32) for use with the sliding rod (3) is also provided on one side of the annular connecting plate (25); and a track groove (33) for use with the sliding rod (3) is provided on one side of the first annular plate (21).

2. A screw air compressor rotor according to claim 1, characterized in that: A cover connection groove (24) is formed at one end of the installation cavity (23), and an end cover plate (2) is connected to the cover connection groove (24) for sealing the installation cavity (23).

3. A screw air compressor rotor according to claim 1, characterized in that: A gear installation groove (42) is provided inside the first annular plate (21) and at a position corresponding to the adjusting gear (41). The gear installation groove (42) is penetrated on both sides and is used for installing the adjusting gear (41). The adjusting gear (41) corresponds to the position of the inner ring gear (43), and the adjusting gear (41) is meshedly connected with the inner ring gear (43).

4. A screw air compressor rotor according to claim 2, characterized in that: One end of the adjusting knob (4) is fixedly connected to the rotating shaft end of the adjusting gear (41), and an adjusting notch is provided at one end of the adjusting knob (4). A docking hole (44) is provided on one side of the end cover plate (2) at a position corresponding to the adjusting knob (4) to facilitate rotational adjustment of the adjusting gear (41).

5. A screw air compressor rotor according to claim 1, characterized in that: The counterweight adjustment block (31) is circular and is used to ensure that no change in gravity balance will occur after the balance adjustment is completed.

6. A screw air compressor rotor according to claim 1, characterized in that: The track groove (33) is a quasi-sine track connected end to end, and is used to facilitate adjustment of the balance state of the rotor after wear.

7. A screw air compressor rotor according to claim 1, characterized in that: The centrifugal anti-rotation component comprises a plurality of limiting inserts (5) arranged in an annular shape on the outer wall of the first annular plate (21), and hidden grooves (51) are provided on the outer wall of the first annular plate (21) at positions corresponding to the limiting inserts (5).

8. A screw air compressor rotor according to claim 7, characterized in that: A spring (52) is installed inside the hidden groove (51), and one end of the spring (52) is fixedly connected to the limiting plug block (5) for providing a rebound force for the limiting plug block (5) after the centrifugal force is lost.

9. A screw air compressor rotor according to claim 7, characterized in that: One end of the limiting plug block (5) is provided with an inserting inclined surface (53), which is adapted to fit the inner recess of the inner ring gear (43) and is used to limit the position of the second annular plate (22).

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