Rotating shaft for air compressor

Abstract

The utility model relates to the technical field of air compressors, in particular to a rotating shaft for an air compressor, which comprises a rotating shaft body, two ends of the rotating shaft body are open, the inside of the rotating shaft body is hollow, two diversion trenches are axially arranged on the side wall of the rotating shaft body, and the two diversion trenches are symmetrically distributed. Oil outlet holes enabling the flow guide grooves to be communicated with the interior of the rotating shaft body are formed in the rotating shaft body, a plurality of oil outlet holes are correspondingly formed in each flow guide groove, and the oil outlet holes are symmetrically distributed. The rotating shaft is designed to be of an internal hollow structure, so that a worker can inject lubricating oil into the shaft from the position of the cover body, then the lubricating oil enters the flow guide grooves in cooperation with the oil outlet holes in the surface of the shaft body, and finally the lubricating oil is conveyed to the surfaces of all parts on the shaft body through the flow guide grooves, so that the lubricating oil can be stored in the rotating shaft; the number of times of adding lubricating oil is reduced, so that the lubricating oil can be added into the shaft body when the machine runs, and the running of the machine does not need to be stopped.

Description

Technical Field

[0001] The utility model relates to the technical field of air compressors, in particular to a rotating shaft used for an air compressor. Background Art

[0002] An air compressor, also known as an air compressor, is a device used to compress gas. Its primary function is to convert the mechanical energy of a prime mover into the pressure energy of air. It is the core component of an air source device. By compressing gas, an air compressor can produce high-pressure gas to meet the needs of various equipment and projects.

[0003] Existing air compressors usually rotate by the internal rotating shaft, driving the bearings, gears and rotors (such as Figure 1 The air is compressed by the rotating shaft (as shown in the figure). To ensure that the rotating shaft and the bearings, gears and rotors installed on the rotating shaft can run smoothly, the staff usually add lubricating oil to the outer surface of the rotating shaft, so that the lubricating oil flows along the outer surface of the rotating shaft to the bearings, gears and rotors, and finally forms a lubricating film on the surface, which not only makes the machine run smoothly, but also can reduce the temperature of internal parts.

[0004] The existing method of adding lubricating oil is usually to add it directly to the outside of the rotating shaft. This method not only requires stopping the equipment during oiling, but also causes a large amount of oil to adhere to the outer surface of the rotating shaft, causing dripping and evaporation, resulting in resource waste. To this end, we have proposed a rotating shaft for air compressors to effectively address the above drawbacks. Utility Model Content

[0005] The purpose of the present utility model is to provide a rotating shaft for an air compressor, so as to solve the problems raised in the above background technology.

[0006] The utility model is realized by the following technical solutions: a rotating shaft for an air compressor, comprising a rotating shaft body, the rotating shaft body being open at both ends and having a hollow interior, a bearing, a gear and a rotor fixedly connected to the outer wall of the rotating shaft body;

[0007] Two guide grooves are provided on the side wall of the rotating shaft along the axial direction, and the two guide grooves are symmetrically distributed;

[0008] The rotating shaft body is provided with an oil outlet hole for connecting the guide groove with the interior of the rotating shaft body; each guide groove has a corresponding number of oil outlet holes, and the oil outlet holes are symmetrically distributed.

[0009] Optionally, a blocking component is movably and slidably connected in the oil outlet hole, and the blocking component includes a piston slidably connected in the oil outlet hole, and the piston is frustum-shaped, and the piston is used to control the on / off state of the oil outlet hole.

[0010] Optionally, a connecting block is fixedly provided at one end of the piston facing the center of the rotating shaft, the connecting block is in a U-shape, and a sliding block is fixedly provided on the inner wall of the connecting block.

[0011] Optionally, a driving component is slidably provided in the rotating shaft body, and the driving component is used to drive the two opposite blocking components to move closer to or away from each other.

[0012] Optionally, the driving assembly includes a slide plate arranged to slide axially along the rotating shaft, the slide plate is provided with an arc-shaped slide groove, and the slider is slidably connected in the slide groove; when the slider is located at the end of the slide groove, the oil outlet hole is in a closed state; when the slider is located in the middle position of the slide groove, the oil outlet hole is in an open state; a control rod is fixed to one end of the slide plate, and the control rod extends to the outside of the rotating shaft.

[0013] Optionally, an anti-slip block is fixedly provided at a position near the oil outlet on the inner wall of the rotating shaft body, the anti-slip block is sleeved on the outside of the piston, and the piston and the anti-slip block are slidably connected; sealing covers are fixedly installed at the openings at both ends of the rotating shaft body, the control rod passes through the sealing cover on one side, and the control rod and the sealing cover are slidably connected.

[0014] Compared with the prior art, the present invention provides a rotating shaft for an air compressor, which has the following beneficial effects:

[0015] 1. The present invention designs the rotating shaft to have an internal hollow structure, allowing workers to inject lubricating oil into the shaft through the cover. The oil outlet holes on the shaft surface then allow the lubricating oil to enter the guide groove, which ultimately transports the lubricating oil to the surfaces of various parts on the shaft, forming a lubricating film. Compared with the method of adding oil from the outside, the present invention can not only store lubricating oil internally, reducing the number of times lubricating oil is added, but also allows the shaft to be lubricated while the machine is running without stopping the machine.

[0016] 2. The utility model sets a driving component and a blocking component inside the shaft body that can control the switch state of the oil outlet, so that the staff can add lubricating oil to the outside of the shaft body more conveniently when it is needed, and at the same time prevent the internal lubricating oil from being thrown out completely when the shaft body rotates. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the rotating shaft structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the disassembly of the rotating shaft and drive assembly of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the drive assembly of the utility model;

[0021] Figure 5 This is a schematic diagram of the internal structure of the rotating shaft of the utility model;

[0022] Figure 6 This is a cross-sectional view of the rotating shaft structure of the utility model.

[0023] In the figure: 1. rotating shaft; 2. guide groove; 3. oil outlet; 4. blocking assembly; 401. piston; 402. connecting block; 403. slider; 5. driving assembly; 501. slide plate; 502. slide groove; 503. control rod; 6. anti-slip block; 7. sealing cover. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figures 1-6 A rotating shaft for an air compressor includes a rotating shaft body 1, which is open at both ends and has a hollow interior. Bearings, gears, and rotors are fixedly connected to the outer wall of the rotating shaft body 1 so that staff can inject lubricating oil into the interior from both sides of the rotating shaft body 1. Two guide grooves 2 are provided on the side wall of the rotating shaft body 1 along the axial direction, and the two guide grooves 2 are symmetrically distributed. The rotating shaft body 1 is provided with oil outlet holes 3 that connect the guide grooves 2 with the interior of the rotating shaft body 1; each guide groove 2 has a corresponding number of oil outlet holes 3, and the oil outlet holes 3 are symmetrically distributed so that the lubricating oil inside the rotating shaft body 1 can flow into the guide groove 2 through the oil outlet holes 3, and then be guided to the outside of the rotating shaft body 1 by the guide groove 2. Compared with adding lubricating oil directly from the outside, the present application can store lubricating oil, reduce the number of times lubricating oil is added, and enable the machine to add lubricating oil at any time during operation, thereby improving the working efficiency of the air compressor.

[0026] In order to enable the staff to control the oil discharge time according to demand, the present application has a plugging assembly 4 that is movably and slidably connected in the oil outlet 3. The plugging assembly 4 includes a piston 401 that is slidably connected in the oil outlet 3. The piston 401 is in a frustum shape so that the piston 401 can enter the oil outlet 3 more smoothly. The piston 401 is used to control the on / off state of the oil outlet 3, so that the staff can control the on / off state of the oil outlet 3 by controlling the movement of the piston 401.

[0027] Other structures of the blocking component 4 are described below:

[0028] A connecting block 402 is fixedly provided at one end of the piston 401 facing the center of the rotating shaft 1 . The connecting block 402 is in a U-shape, and a sliding block 403 is fixedly provided on the inner wall of the connecting block 402 .

[0029] Furthermore, a driving assembly 5 is slidingly provided in the rotating shaft 1 , and the driving assembly 5 is used to drive the two opposite blocking assemblies 4 to move closer to or away from each other. The driving assembly 5 drives the blocking assemblies 4 to move by driving the slider 403 .

[0030] Specifically, the drive assembly 5 includes a slide plate 501 that slides axially along the rotating shaft 1. The slide plate 501 is provided with an arc-shaped slot 502, and the slider 403 is slidably connected to the slot 502. When the slider 403 is at the end of the slot 502, the connecting block 402 and the piston 401 are close to the outside of the rotating shaft 1. At this time, the piston 401 is completely located in the oil outlet 3, so that the piston 401 can block the oil outlet 3, thereby closing the oil outlet 3. When the slider 403 is in the middle of the slot 502, that is, as the slide plate 501 moves, the slider 403 gradually moves to the middle of the slot 502. During this process, the slot 502 drives the two opposing sliders 403 to move closer to each other, thereby bringing the connecting blocks 402 and the piston 401 on both sides closer to each other. The larger side of the piston 401 will move away from the oil outlet 3, leaving the oil outlet 3 open, thereby allowing the oil in the rotating shaft 1 to enter the oil outlet 3, ultimately achieving the operation of adding lubricating oil to the outside of the rotating shaft 1.

[0031] In order to enable the staff to control the switch of the oil outlet hole 3 when the machine is running, the present application fixes a control rod 503 at one end of the slide 501, and the control rod 503 extends to the outside of the rotating shaft 1, so that the staff can move the slide 501 by pulling or pushing the control rod 503, thereby causing the slide groove 502 to drive the slider 403 to move, and then causing the piston 401 to start moving, thereby realizing the control of the switch of the oil outlet hole 3.

[0032] Furthermore, an anti-slip block 6 is fixedly provided at a position on the inner wall of the rotating shaft 1 near the oil outlet 3, and the anti-slip block 6 is sleeved on the outside of the piston 401. The piston 401 and the anti-slip block 6 are slidably connected so that the larger side of the piston 401 will enter the encirclement of the anti-slip block 6 when leaving the oil outlet 3, and the anti-slip block 6 is composed of four blocks arranged in a circle, so that the anti-slip block 6 will not affect the entry of lubricating oil into the oil outlet 3. At the same time, when the piston 401 needs to return to the oil outlet 3, the slide groove 502 is prevented from causing the blocking component 4 to shift as a whole, thereby preventing the piston 401 from being unable to be inserted directly into the oil outlet 3.

[0033] Sealing covers 7 are fixedly installed at the openings at both ends of the rotating shaft body 1. The control rod 503 passes through the sealing cover 7 on one side, and the control rod 503 and the sealing cover 7 are slidably connected to prevent the lubricating oil inside the rotating shaft body 1 from leaking.

[0034] The working principle and usage process of the present invention are as follows: First, when using the rotating shaft body 1, the bearings, gears and rotors are fixedly connected to the outside of the rotating shaft body 1 so that the rotating shaft body 1 can drive the bearings, gears and rotors to rotate. Then, the sealing cover 7 on one side of the rotating shaft body 1 is opened, and lubricating oil is injected into the interior of the rotating shaft body 1 for storage, or an oil guide pipe is used to extend into the rotating shaft body 1 for adding oil.

[0035] When the compressor is running, the rotating shaft 1 begins to rotate. At this time, the staff can pull or push the control lever 503 to move the slide 501. At this time, the slider 403 in the slide groove 502 will be driven to move. When the slider 403 moves from the end of the slide groove 502 to the middle position, the two opposing sliders 403 will approach each other, thereby driving the connecting blocks 402 and the piston 401 on both sides to approach each other, and then the piston 401 will leave the oil outlet 3. At this time, the lubricating oil in the rotating shaft 1 will enter the oil outlet 3, and the oil outlet 3 will transport the lubricating oil to the guide groove 2. The guide groove 2 will guide the lubricating oil along the path to various parts of the outside of the rotating shaft 1. Finally, the lubricating oil will form a lubricating film on the surface of the rotating shaft 1, bearings, gears and rotor, thereby improving the operating efficiency of the compressor and cooling the interior, avoiding waste caused by excessive oil addition from the outside. Storing lubricating oil inside the rotating shaft 1 reduces the number of oil additions and improves the working efficiency of the device.

[0036] At the same time, when lubricating oil needs to be added to the rotating shaft 1, the machine can be kept running without stopping. The oil guide tube can be inserted into the rotating shaft 1 to make the rotating shaft 1 and the sealing cover 7 rotate outside the guide tube. At this time, adding oil through the oil guide tube does not affect the operation of the machine.

[0037] Finally, when the oil outlet hole 3 needs to be closed, the above steps are performed by pulling or pushing the control rod 503 in the reverse direction to control the slide plate 501 to move in the reverse direction to close the oil outlet hole 3, which is easy to operate.

[0038] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0039] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotating shaft for an air compressor, characterized in that: It comprises a rotating shaft body (1), the rotating shaft body (1) is open at both ends and has a hollow interior, and a bearing, a gear and a rotor are fixedly connected to the outer wall of the rotating shaft body (1); Two guide grooves (2) are provided on the side wall of the rotating shaft (1) along the axial direction, and the two guide grooves (2) are symmetrically distributed; The rotating shaft (1) is provided with oil outlet holes (3) for connecting the guide groove (2) with the interior of the rotating shaft (1); each guide groove (2) has a corresponding plurality of oil outlet holes (3), and the oil outlet holes (3) are symmetrically distributed.

2. The rotating shaft for an air compressor according to claim 1, characterized in that: A blocking assembly (4) is movably and slidably connected in the oil outlet hole (3). The blocking assembly (4) comprises a piston (401) slidably connected in the oil outlet hole (3). The piston (401) is in a truncated cone shape and is used to control the on / off state of the oil outlet hole (3).

3. The rotating shaft for an air compressor according to claim 2, characterized in that: A connecting block (402) is fixedly provided at one end of the piston (401) facing the center of the rotating shaft (1). The connecting block (402) is in a U-shape, and a sliding block (403) is fixedly provided on the inner wall of the connecting block (402).

4. The rotating shaft for an air compressor according to claim 3, characterized in that: A driving assembly (5) is slidably provided in the rotating shaft (1), and the driving assembly (5) is used to drive two opposing blocking assemblies (4) to move closer to or farther from each other.

5. The rotating shaft for an air compressor according to claim 4, characterized in that: The driving assembly (5) comprises a slide plate (501) axially slidingly arranged along the rotating shaft (1), the slide plate (501) being provided with an arc-shaped slide groove (502), and the slider (403) being slidably connected in the slide groove (502); when the slider (403) is located at the end of the slide groove (502), the oil outlet hole (3) is in a closed state; when the slider (403) is located in the middle of the slide groove (502), the oil outlet hole (3) is in an open state; a control rod (503) is fixedly provided at one end of the slide plate (501), and the control rod (503) extends to the outside of the rotating shaft (1).

6. The rotating shaft for an air compressor according to claim 5, characterized in that: An anti-slip block (6) is fixedly provided at a position near the oil outlet hole (3) on the inner wall of the rotating shaft body (1), and the anti-slip block (6) is sleeved on the outside of the piston (401), and the piston (401) and the anti-slip block (6) are slidably connected; sealing covers (7) are fixedly installed at the openings at both ends of the rotating shaft body (1), and the control rod (503) passes through the sealing cover (7) on one side, and the control rod (503) and the sealing cover (7) are slidably connected.

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