Axial force adjusting structure of compressor

Abstract

The utility model discloses an axial force adjusting structure of a compressor, which relates to the technical field of compressors and comprises a locking disc inserted outside a stress block. The locking assembly can firmly fix the impeller outside the main rotating shaft and has a self-locking function and a self-locking structure, so that the locking nut cannot be loosened due to vibration generated during operation of the compressor after installation is completed, stable fixation of the impeller and normal operation and use of the compressor are guaranteed, operation is convenient, and practicability is high. Meanwhile, the locking assembly can be freely disassembled, the compressor can be conveniently overhauled and maintained, use is flexible, and the problems that an impeller of an existing compressor is locked and installed on a main rotating shaft through a nut, the nut has or has no locking structure, and therefore the nut is prone to loosening due to vibration and other factors when the compressor runs, and the compressor cannot be damaged are solved. The impeller is not firmly fixed, and the normal use of the compressor is influenced.

Description

Technical Field

[0001] The utility model belongs to the technical field of compressors, and more specifically, particularly relates to a compressor axial force adjustment structure. Background Art

[0002] The magnetic levitation centrifugal compressor is a highly efficient and energy-saving compressor. It uses magnetic levitation bearings to keep the rotor of the compressor in a suspended state during operation, so that there is no mechanical contact with the machine base during rotation, avoiding mechanical friction. For example, in the patent with the application number: CN202320479019.3, a structure for balancing the axial force of a magnetic levitation compressor is disclosed. A first-stage impeller is provided in the first-stage compression, and a second-stage impeller is provided in the second-stage compression. The diameter of the first-stage impeller is larger than that of the second-stage impeller. The first-stage and second-stage impellers are relatively installed on both sides of the rotor. By adjusting the sizes of the first-stage and second-stage impellers, the overall axial force of the compressor rotor is balanced. A bevel gear is provided behind the first-stage and second-stage impellers, and a straight gear is provided at the contact position between the first-stage and second-stage shaft seals and the first-stage and second-stage impellers. The sealing structure formed by the bevel gear and the straight gear improves the gas production of the compressor. The axial force generated when the bevel gear rotates balances the axial force generated by the first-stage and second-stage impellers themselves during rotation. An adjusting part is also provided behind the impeller. The cooperation between the adjusting part and the roller shaft makes there be a gap between the impeller and the shaft seal to prevent rubbing. The utility model provides a new method for solving the balance of the axial force of a magnetic levitation compressor, which has the advantages of balancing the axial force, improving the stability of the compressor, and increasing the gas production.

[0003] As for the above-mentioned existing magnetic levitation compressor axial force structure, its impeller is installed on the main rotating shaft by a nut. As is well known, the compressor will generate high-frequency vibration during operation, and the nut has no locking structure, so that the nut is very easy to loosen due to vibration and other factors during the operation of the compressor, resulting in the impeller being not firmly fixed, affecting the normal use of the compressor, with poor stability and low practicality. Summary of the Utility Model

[0004] The embodiment of the present disclosure relates to a compressor axial force adjustment structure, which has a locking assembly. The locking assembly can firmly fix the impeller outside the main rotating shaft, and the locking assembly has a self-locking function and structure, so that the locking nut will not loosen due to the vibration generated during the operation of the compressor after installation, ensuring the stable fixation of the impeller and the normal operation and use of the compressor, with convenient operation. At the same time, the locking assembly can also be freely disassembled, facilitating the maintenance and repair operations of the compressor, with flexible use, and extremely strong stability, flexibility and practicality.

[0005] In the first aspect of the present disclosure, a compressor axial force adjustment structure is provided, including a body assembly, the body assembly includes a main rotating shaft and an impeller, the impeller is inserted outside the main rotating shaft, and the main rotating shaft is fixedly installed at the outer end of the compressor rotor; a locking assembly, the locking assembly includes a locking nut, a force-bearing block and a locking disc, the locking nut is inserted outside the main rotating shaft, and the force-bearing block is inserted outside the main rotating shaft, the locking disc is inserted outside the force-bearing block, and one side of the force-bearing block abuts against the side surface of the impeller.

[0006] In at least some embodiments, a thread is provided on the outer end rod body of the main rotating shaft, and the locking nut is screwed onto the outside of the main rotating shaft through the thread, and the rod body of the main rotating shaft with the threaded part passes through the inside of the impeller and the force-bearing block.

[0007] In at least some embodiments, a track groove is provided on the outside of the main rotating shaft, and a track block is provided inside the force-bearing block, and the track block is inserted inside the track groove.

[0008] In at least some embodiments, a synchronous block is provided on the side surface of the force-bearing block, and the cross-section of the block body of the synchronous block is a regular polygon, and a synchronous groove is provided inside the locking disc, and the synchronous block is inserted inside the synchronous groove.

[0009] In at least some embodiments, a locking top spring is provided on the side surface of the locking disc, and both ends of the locking top spring respectively abut against the side surface of the locking disc and the side surface of the force-bearing block.

[0010] In at least some embodiments, a disassembly abutting block is provided on the side surface of the locking disc.

[0011] In at least some embodiments, control tooth rings with a right-angled triangle tooth profile are provided on the opposite side surfaces of the locking nut and the locking disc.

[0012] Compared with the prior art, the present utility model has the following beneficial effects:

[0013] The locking assembly can firmly fix the impeller outside the main rotating shaft, and the locking assembly has a self-locking function and structure, so that the locking nut will not loosen due to the vibration generated during the operation of the compressor after installation, ensuring the stable fixation of the impeller and the normal operation and use of the compressor, with convenient operation. At the same time, the locking assembly can also be freely disassembled, facilitating the maintenance and repair operations of the compressor, with flexible use, improving the flexibility, stability and practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the present utility model.

[0015] Figure 2 is a schematic structural diagram of the disassembled present utility model.

[0016] Figure 3 It is a schematic diagram of the internal structure of the present utility model.

[0017] Figure 4 It is a schematic diagram of the internal structure when the locking nut of the present utility model rotates forward.

[0018] Figure 5 It is a schematic diagram of the internal structure when the present utility model disassembles and resists by the sleeve touching and extruding.

[0019] Figure 6 It is the present utility model Figure 3 The enlarged schematic diagram of part A in it.

[0020] In the figure, the corresponding relationship between the part names and the drawing reference numbers is as follows:

[0021] 1. Body assembly; 101. Main rotating shaft; 1011. Track groove; 102. Impeller;

[0022] 2. Locking assembly; 201. Locking nut; 202. Force-bearing block; 2021. Track block; 2022. Synchronous block; 203. Locking disc; 2031. Synchronous groove; 2032. Locking top spring; 2033. Disassembly resisting block; 2034. Control gear ring. Specific embodiments

[0023] The following further describes in detail the embodiments of the present utility model in conjunction with the drawings and examples.

[0024] As shown in the attached Figure 1 to the attached Figure 6 shown:

[0025] Embodiment 1: The present utility model provides a compressor axial force adjustment structure, including a body assembly 1, the body assembly 1 includes a main rotating shaft 101 and an impeller 102, the impeller 102 is inserted outside the main rotating shaft 101, and the main rotating shaft 101 is fixedly installed at the outer end of the compressor rotor; a locking assembly 2, the locking assembly 2 includes a locking nut 201, a force-bearing block 202 and a locking disc 203, the locking nut 201 is inserted outside the main rotating shaft 101, and the force-bearing block 202 is inserted outside the main rotating shaft 101, the locking disc 203 is inserted outside the force-bearing block 202, and one side of the force-bearing block 202 abuts against the side of the impeller 102.

[0026] In an embodiment of the present disclosure, the outer end rod body of the main rotating shaft 101 is provided with threads, and the locking nut 201 is screwed onto the outside of the main rotating shaft 101 through the threads. The rod body of the main rotating shaft 101 with the threaded part passes through the inside of the impeller 102 and the force-bearing block 202. During use, the locking nut 201 can fix the impeller 102 to the outside of the main rotating shaft 101 through the threads on the outer shaft body of the main rotating shaft 101. When the main rotating shaft 101 is fixed and the locking nut 201 is rotated, the locking nut 201 can abut against and squeeze the force-bearing block 202 to drive the force-bearing block 202 to move synchronously, so as to fix the impeller 102 to the outside of the main rotating shaft 101 by the way that the force-bearing block 202 abuts against and squeezes the impeller 102, and the installation is convenient and fast.

[0027] In an embodiment of the present disclosure, a locking top spring 2032 is provided on the side surface of the locking disc 203, and both ends of the locking top spring 2032 abut against the side surface of the locking disc 203 and the side surface of the force-bearing block 202 respectively. Control tooth rings 2034 with a right-angled triangle tooth profile are provided on the opposite side surfaces of the locking nut 201 and the locking disc 203. During use, the locking assembly 2 has a self-locking function and structure. After the impeller 102 is installed and fixed, under the action of the locking top spring 2032, the two control tooth rings 2034 are inserted into each other, so that under the clamping action of the straight edges of the teeth of the two control tooth rings 2034, the locking nut 201 cannot rotate in the reverse direction (towards the loosening direction) independently of the locking disc 203. A synchronous block 2022 is provided on the side surface of the force-bearing block 202, and the block cross-section of the synchronous block 2022 is a regular polygon. A synchronous groove 2031 is provided inside the locking disc 203, and the synchronous block 2022 is inserted into the synchronous groove 2031. Under the action of the synchronous groove 2031 and the synchronous block 2022, the force-bearing block 202 and the locking disc 203 form an integral body. A track groove 1011 is provided on the outside of the main rotating shaft 101, and a track block 2021 is provided inside the force-bearing block 202. The track block 2021 is inserted into the track groove 1011. Under the action of the track groove 1011 and the track block 2021, the force-bearing block 202 can never rotate independently of the main rotating shaft 101. At this time, the locking nut 201 cannot rotate in the reverse direction on the outside of the main rotating shaft 101, realizing the function of locking the locking nut 201 to the outside of the main rotating shaft 101, avoiding the phenomenon that the locking nut 201 becomes loose due to the vibration generated during the operation of the compressor, and the use is stable. When the locking nut 201 rotates forward, at this time, the inclined sides of the teeth of the two control tooth rings 2034 squeeze each other, causing the locking disc 203 to move to one side to make way, and will not jam the forward rotation action of the locking nut 201, and the operation is convenient and fast, and the use is stable.

[0028] In the disclosed embodiment, a disassembly block 2033 is provided on the side of the locking disk 203. During use, when the locking nut 201 needs to be disassembled to repair the compressor, the locking disk 203 only needs to be manually moved or a sleeve is inserted into the outside of the locking nut 201 and squeezed to disassemble the block 2033. When the locking disk 203 is manually moved or the sleeve is squeezed to disassemble the block 2033, the locking disk 203 will move in a direction away from the locking nut 201 and compress the locking top spring 2032, thereby releasing the plug-in relationship between the two sets of control tooth rings 2034. After that, the locking nut 201 can rotate freely in the opposite direction to realize the disassembly operation, and the disassembly is quick.

[0029] The specific usage and function of this embodiment are as follows:

[0030] In the present invention, the locking nut 201 can fix the impeller 102 to the outside of the main shaft 101 through the threads on the outside of the main shaft 101. When the main shaft 101 is fixed and the locking nut 201 is rotated, the locking nut 201 can contact and squeeze the force block 202 to drive the force block 202 to move synchronously, thereby fixing the impeller 102 to the outside of the main shaft 101 by the force block 202 contacting and squeezing the impeller 102. The locking assembly 2 has a self-locking function and structure. When the impeller 102 is installed After the fixing is completed, under the action of the locking top spring 2032, the two sets of control tooth rings 2034 are plugged into each other, so that the locking nut 201 cannot rotate independently of the locking plate 203 in the opposite direction (towards the direction of loosening) under the clamping action of the straight edges of the gear teeth of the two sets of control tooth rings 2034. Under the action of the synchronous groove 2031 and the synchronous block 2022, the force block 202 and the locking plate 203 form a whole. Under the action of the track groove 1011 and the track block 2021, the force block 202 can never be independent of the main shaft. 101 rotates, so that the locking nut 201 cannot rotate in the opposite direction outside the main rotating shaft 101, thereby realizing the function of locking the locking nut 201 outside the main rotating shaft 101, avoiding the phenomenon that the locking nut 201 is loosened due to the vibration generated when the compressor is running, and the use is stable. When the locking nut 201 rotates forward, the bevel edges of the teeth of the two sets of control gear rings 2034 squeeze each other, causing the locking plate 203 to move to one side to avoid it, and the forward rotation of the locking nut 201 will not be blocked. When it is necessary to disassemble the locking nut 201 When the nut 201 is used to repair the compressor, it is only necessary to manually move the locking plate 203 or insert a sleeve into the outside of the locking nut 201 and squeeze the disassembly block 2033. When the locking plate 203 is manually moved or the sleeve is squeezed to disassemble the block 2033, the locking plate 203 will move away from the locking nut 201 and compress the locking top spring 2032, thereby releasing the plug-in relationship between the two sets of control tooth rings 2034. After that, the locking nut 201 can be freely rotated in the opposite direction to realize the disassembly operation.

[0031] In this document, the following points need attention:

[0032] 1. The accompanying drawings of the embodiments of the present disclosure only relate to the structures involved in the embodiments of the present disclosure, and other structures can refer to the general design.

[0033] 2. Without conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0034] The above is only the specific implementation manner of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of changes or substitutions, which should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. A compressor axial force adjustment structure, characterized in that: include: A machine body component (1), the machine body component (1) comprising a main rotating shaft (101) and an impeller (102), the impeller (102) being inserted into the outside of the main rotating shaft (101), and the main rotating shaft (101) being fixedly mounted on the outer end of a compressor rotor; a locking component (2), the locking component (2) comprising a locking nut (201), a force block (202) and a locking plate (203), the locking nut (201) being inserted into the outside of the main rotating shaft (101), the force block (202) being inserted into the outside of the main rotating shaft (101), the locking plate (203) being inserted into the outside of the force block (202), and one side of the force block (202) being in contact with a side surface of the impeller (102).

2. A compressor axial force adjustment structure as claimed in claim 1, characterized in that: The outer end rod body of the main rotating shaft (101) is provided with threads, and the locking nut (201) is screwed onto the outside of the main rotating shaft (101) via threads. The rod body of the main rotating shaft (101) with the threaded portion passes through the inside of the impeller (102) and the force block (202).

3. A compressor axial force adjustment structure as claimed in claim 2, characterized in that: A track groove (1011) is provided on the outside of the main rotating shaft (101), and a track block (2021) is provided on the inside of the force bearing block (202), and the track block (2021) is plugged into the inside of the track groove (1011).

4. A compressor axial force adjustment structure as claimed in claim 3, characterized in that: A synchronizing block (2022) is provided on the side of the force-bearing block (202), and the block cross-section of the synchronizing block (2022) is a regular polygon; a synchronizing groove (2031) is provided inside the locking disk (203), and the synchronizing block (2022) is inserted into the synchronizing groove (2031).

5. A compressor axial force adjustment structure as claimed in claim 4, characterized in that: A locking top spring (2032) is provided on the side of the locking plate (203), and two ends of the locking top spring (2032) respectively abut against the side of the locking plate (203) and the side of the force block (202).

6. A compressor axial force adjustment structure as claimed in claim 5, characterized in that: A disassembly stop (2033) is provided on the side of the locking plate (203).

7. A compressor axial force adjustment structure as claimed in claim 6, characterized in that: The opposite sides of the locking nut (201) and the locking plate (203) are both provided with a control tooth ring (2034) having a right-angled triangle tooth cross section.

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