Air compressor rotor

Abstract

The utility model discloses an air compressor rotor, and belongs to the technical field of air compressors. Comprising two rotating shafts which are arranged side by side; one end of each rotating shaft is fixedly provided with a gear, and the two gears are meshed with each other; a cooling assembly is arranged in the rotating shaft and comprises a feeding pipe and a return guide pipe, the axis of the feeding pipe and the axis of the return guide pipe are parallel to the axis of the rotating shaft, the end, located in the rotating shaft, of the feeding pipe communicates with the return guide pipe, and connecting pieces are arranged at the ends, located outside the rotating shaft, of the feeding pipe and the return guide pipe. A rotating joint is rotationally arranged at one end, away from the rotating shaft, of the connecting piece; according to the air compressor rotor, the problem that the temperature difference between the inside and the outside of the screw is large easily due to the fact that heat on the inner side of the screw body cannot be rapidly taken away in a traditional oil injection cooling mode is solved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of air compressors, in particular to an air compressor rotor. BACKGROUND

[0002] The screw air compressor adopts a pre-assembled screw air compressor which only needs a single power connection and compressed air connection and is internally provided with a cooling system, the rotor is driven by a motor, the tooth groove space of the main rotor and the slave rotor is large when the tooth groove space is turned to the opening of the air inlet end wall, the air outside is filled in the space, when the air inlet side end surface of the rotor is turned away from the air inlet of the shell, the air in the tooth groove is enclosed between the main rotor, the slave rotor and the shell, and the air suction process is completed; in the conveying process, the volume is continuously reduced, the gas is continuously compressed, the pressure is increased, and the temperature is increased, when the closed tooth peak of the rotor rotates to meet the exhaust port of the shell, the compressed air starts to be discharged, until the matching surface of the tooth peak and the tooth groove moves to the exhaust end surface, at this time, the tooth groove space is zero, that is, the exhaust process is completed.

[0003] When the traditional screw air compressor works, the temperature of the gas in the compression process is increased, and the temperature of the rotor and the shell is also increased accordingly, so in the air suction process, the gas is expanded by the heating of the rotor and the shell, and accordingly the air suction amount is reduced, some rotors of the screw air compressor adopt oil cooling, and the shell is cooled by water.

[0004] However, the lubricating oil cannot completely take away the heat transferred to the inside of the screw surface, and as the screw speed increases, the cooling effect of the mixed lubricating oil cooling mode is getting worse and worse, causing the rapid decrease of the air suction amount and the exhaust amount.

[0005] Therefore, it is necessary to provide an air compressor rotor to solve the above problems.

[0006] It should be noted that the above information disclosed in the background section of the present application is only used to understand the background technology of the concept of the present application, and therefore, it can contain information which does not constitute prior art. CONTENT OF THE UTILITY MODEL

[0007] Based on the above problems existing in the prior art, the present application solves the problem of providing an air compressor rotor, which solves the problem that the traditional oil injection cooling mode cannot quickly take away the heat inside the screw body, which easily causes a large temperature difference between the inside and outside of the screw.

[0008] The technical scheme adopted by the application to solve its technical problems is: an air compressor rotor, comprising a rotating shaft, the rotating shaft is provided with two and is arranged side by side, one end of the rotating shaft is fixedly installed with a gear, the two gears are engaged with each other, the inside of the rotating shaft is provided with a cooling assembly, the cooling assembly comprises a feeding pipe and a return pipe, the axes of the feeding pipe and the return pipe are arranged in parallel with the axis of the rotating shaft, one end of the feeding pipe in the rotating shaft is communicated with the return pipe, one end of the feeding pipe and the return pipe outside the rotating shaft is provided with a connecting piece, and one end of the connecting piece away from the rotating shaft is rotatably provided with a rotary joint; therefore, the water cooling system of the air compressor shell guides the cooling water into the feeding pipe through the connecting piece, then guides the cooling water out through the return pipe, and then quickly takes away the heat inside the rotating shaft.

[0009] Further, the outside of the rotating shaft is provided with threaded protrusions, the two threaded protrusions are staggered; the threaded protrusions are unequal distance threads, and the distance gradually shortens; therefore, the distance of the threads near the air inlet is the largest, and the distance of the threads near the air outlet is the smallest, which further ensures the air intake and also enhances the compression speed.

[0010] Further, the thickness of the threaded protrusions gradually thins, and the two threaded protrusions are engaged with each other.

[0011] Further, the feeding pipe is a spiral pipe, the return pipe is a straight-through pipe, and the feeding pipe is sleeved outside the return pipe.

[0012] Further, the connecting piece is located at one end of the rotating shaft away from the gear, the inside of the connecting piece is installed with a return pipe and an inlet pipe, one end of the inlet pipe and the return pipe penetrates one end of the connecting piece, and the inlet pipe is arranged on one side of the return pipe; one end of the inlet pipe is communicated with the feeding pipe, and one end of the return pipe is communicated with the return pipe.

[0013] Further, one end of the rotary joint away from the rotating shaft is fixedly connected with a three-way pipe, and the outside of the three-way pipe is fixedly connected with the air compressor shell.

[0014] The beneficial effects of the application are: the air compressor rotor provided by the application is provided with a cooling assembly, the water cooling system of the air compressor shell guides the cooling water into the feeding pipe through the connecting piece, then guides the cooling water out through the return pipe, and then quickly takes away the heat inside the rotating shaft.

[0015] In addition to the purposes, features and advantages described above, the application has other purposes, features and advantages. The purposes, features and advantages will be described below with reference to the Figures 1-3 The application will be further described in detail. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings accompanying the specification of this application provide further understanding of the application, serve as a further example of the illustrative embodiments of the application, and serve to explain the application, but do not in any way limit the application.

[0017] In the drawings:

[0018] Figure 1 is a schematic view of the overall air compressor rotor in the application;

[0019] Figure 2 is a schematic view of the cooling assembly in the rotating shaft;

[0020] Figure 3 is a schematic view of the cross-section of the connecting piece structure;

[0021] In the drawings, various reference signs:

[0022] 11, rotating shaft; 111, feed pipe; 112, return pipe; 12, threaded protrusion; 2, connecting piece; 21, inlet pipe; 22, return pipe; 3, rotary joint; 4, tee. DETAILED DESCRIPTION

[0023] It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other without conflict. The application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0024] In order to enable those skilled in the art to better understand the application scheme, the technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only a part of the embodiments of the application, not all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the application.

[0025] As Figures 1-3 shown, the application provides an air compressor rotor, which comprises rotating shafts 11, the rotating shafts 11 are provided in two and arranged side by side; one end of the rotating shaft 11 is fixedly installed with a gear, and the two gears are engaged with each other; the inside of the rotating shaft 11 is provided with a cooling assembly, the cooling assembly comprises a feed pipe 111 and a return pipe 112, the axes of the feed pipe 111 and the return pipe 112 are arranged in parallel with the axis of the rotating shaft 11, one end of the feed pipe 111 in the rotating shaft 11 is communicated with the return pipe 112, the other end of the feed pipe 111 and the return pipe 112 outside the rotating shaft 11 is provided with a connecting piece 2, and one end of the connecting piece 2 away from the rotating shaft 11 is rotatably provided with a rotary joint 3; thus, the water cooling system of the air compressor shell guides the cooling water into the feed pipe 111 through the connecting piece 2, and then guides the cooling water out through the return pipe 112, and then quickly takes away the heat inside the rotating shaft 11, thereby avoiding the problem of large temperature difference between the inside and outside of the rotating shaft 11.

[0026] With reference to Figure 1 , the outer side of the rotating shaft 11 is provided with threaded protrusions 12, and two threaded protrusions 12 are staggered; the threaded protrusions 12 are unevenly threaded, and the interval gradually shortens; thus, the threaded interval near the air inlet is the largest, and the threaded interval near the air outlet is the smallest, further ensuring the air intake amount, and also enhancing the compression speed.

[0027] Among them: the thickness of the spiral protrusion gradually thins, and the two spiral protrusions mesh with each other.

[0028] With reference to Figure 2 , the feeding pipe 111 is a spiral pipe, the backflow pipe 112 is a straight-through pipe, and the feeding pipe 111 is sleeved outside the backflow pipe 112.

[0029] With reference to Figure 2 , Figure 3 , the connecting piece 2 is located at the end of the rotating shaft 11 away from the gear, and the inside of the connecting piece 2 is provided with a backflow pipe 22 and an inflow pipe 21; one end of the inflow pipe 21 and the backflow pipe 22 penetrates one end of the connecting piece 2, and the inflow pipe 21 is arranged on one side of the backflow pipe 22; one end of the inflow pipe 21 communicates with the feeding pipe 111, and one end of the backflow pipe 22 communicates with the backflow pipe 112.

[0030] In addition, the rotary joint 3 is fixedly connected with a three-way pipe 4 at the end away from the rotating shaft 11, and the outer side of the three-way pipe 4 is fixedly connected with the air compressor shell.

[0031] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An air compressor rotor, characterized by: The application relates to a rotary shaft (11) provided with two rotary shafts (11) arranged side by side, one end of the rotary shaft (11) is fixedly provided with a gear, the two gears are engaged with each other, the rotary shaft (11) is internally provided with a cooling assembly, the cooling assembly comprises a feeding pipe (111) and a return pipe (112), the axes of the feeding pipe (111) and the return pipe (112) are arranged in parallel with the axis of the rotary shaft (11), one end of the feeding pipe (111) in the rotary shaft (11) is communicated with the return pipe (112), one end of the feeding pipe (111) and the return pipe (112) outside the rotary shaft (11) is provided with a connecting piece (2), one end of the connecting piece (2) away from the rotary shaft (11) is rotatably provided with a rotary joint (3).

2. A compressor rotor as claimed in claim 1, wherein: The feeding pipe (111) is a spiral pipe, the return pipe (112) is a straight-through pipe, and the feeding pipe (111) is arranged outside the return pipe (112).

3. A compressor rotor as claimed in claim 2, wherein: The connecting piece (2) is located at one end of the rotary shaft (11) away from the gear, the connecting piece (2) is internally provided with a return flow pipe (22) and an inlet flow pipe (21), one end of the inlet flow pipe (21) and the return flow pipe (22) penetrates one end of the connecting piece (2), the inlet flow pipe (21) is arranged on one side of the return flow pipe (22), one end of the inlet flow pipe (21) is communicated with the feeding pipe (111), and one end of the return flow pipe (22) is communicated with the return pipe (112).

4. A compressor rotor as claimed in claim 3, wherein: One end of the rotary joint (3) away from the rotary shaft (11) is fixedly connected with a three-way pipe (4), and the outer side of the three-way pipe (4) is fixedly connected with an air compressor shell.

5. A compressor rotor as claimed in claim 4, wherein: The outer side of the rotary shaft (11) is provided with thread protrusions (12), the two thread protrusions (12) are arranged alternately, the thread protrusions (12) are unevenly threaded, and the pitch is gradually shortened.

6. A compressor rotor as claimed in claim 5, wherein: The thickness of the thread protrusions (12) is gradually thinned, and the two thread protrusions (12) are engaged with each other.

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