Axial inlet air compressor

Abstract

The present invention provides an axial air intake air compressor, which relates to the technical field of air compressors. The air compressor includes: a cylinder barrel, in which an axial partition is arranged, and the axial partition divides the cylinder barrel into an inner cavity and several outer cavities; both ends of the inner cavity are closed, the air intake end of the outer cavity is closed, and the air outlet end is communicated with an air outlet pipe; a rotating shaft, which penetrates through the inner cavity, and the rotating shaft is in sealing contact with the axial partition to divide the inner cavity into several air intake cavities; axial blades are arranged on the outer wall of the rotating shaft, and the axial blades are accommodated in the air intake cavities; a hollow cavity is formed in the axial blades, and an air intake groove communicated with the hollow cavity is formed at the air intake end of the rotating shaft; air intake holes communicating the hollow cavity with the air intake cavities are formed on the axial blades, and air intake elastic pieces are arranged on the air intake holes; air outlet holes communicating the air intake cavities with the outer cavities are formed on the axial partition, and air outlet elastic pieces are arranged on the air outlet holes; the air outlet end of the rotating shaft is connected to a power system. In the embodiment of the present invention, the air compressor has a simple structure, small occupied space, low cost and good heat dissipation effect.

Description

Technical Field

[0001] The present invention relates to the technical field of air compressors, and particularly relates to an axial intake air compressor. Background Art

[0002] An air compressor (abbreviation: air compressor) is a device used to compress gas. The air compressor is similar in structure to a water pump.

[0003] Currently, most of the air compressors configured on cement transport vehicles adopt single-cylinder or double-cylinder pendulum air compressors, which have complex structures, large occupied spaces, poor heat dissipation effects, and require dedicated diesel engines. There are many inconveniences in installing them under the beam of the cement transport vehicle. To solve the above problems, a screw air compressor has emerged on the market. However, due to its high cost and low cost performance, the promotion and popularization effect is not good, and it still cannot solve the problems of complex structure, large occupied space, and poor heat dissipation effect of the air compressors of most cement transport vehicles.

[0004] Therefore, there is an urgent need in this field for an air compressor with a simple structure, low cost, small volume, and good heat dissipation effect. Summary of the Invention

[0005] (I) Technical Problems to be Solved

[0006] Aiming at the deficiencies of the prior art, the present invention provides an axial intake air compressor, which solves the problems of complex structure, large occupied space, and poor heat dissipation effect of the air compressor.

[0007] (II) Technical Solutions

[0008] To achieve the above objectives, the present invention is realized through the following technical solutions:

[0009] An axial intake air compressor, the air compressor includes:

[0010] A cylinder barrel, wherein a plurality of axial partitions are arranged in the cylinder barrel, and the axial partitions divide the cylinder barrel into an inner cavity and a plurality of outer cavities; both ends of the inner cavity are closed, the head end of the outer cavity is closed, and the tail end is communicated with an air outlet pipe;

[0011] A rotating shaft, the rotating shaft penetrates through the inner cavity along the axis of the cylinder barrel and is connected to the closed structures at both ends of the inner cavity through sealed bearings, and the rotating shaft is in sealed contact with the axial partitions to divide the inner cavity into a plurality of intake cavities;

[0012] Axial blades corresponding to the intake cavities one by one are arranged on the outer wall of the rotating shaft, the axial blades are accommodated in the intake cavities and are in sealed contact with the inner walls of the intake cavities;

[0013] A hollow cavity is formed in the axial blade, and an intake groove communicated with the hollow cavity is formed at the head end of the rotating shaft; intake holes communicating the hollow cavity with the intake cavity are formed on the axial blade, and intake elastic pieces are arranged on the intake holes;

[0014] An air outlet hole communicating the air inlet cavity and the outer cavity is formed in the axial partition plate, and an air outlet elastic piece is arranged at the air outlet hole;

[0015] The end of the rotating shaft is connected to a power system.

[0016] Preferably, the number of the axial partition plates, the air inlet cavities, and the axial blades is not less than two.

[0017] Preferably, a head end cover is installed at the head end of the cylinder barrel. The head end cover seals the inner cavity and the outer cavity and is connected to the rotating shaft through a sealed bearing.

[0018] Preferably, a filter cover is sleeved outside the head end cover, and a filter element is installed on the filter cover.

[0019] Preferably, a tail end cover is installed at the tail end of the cylinder barrel. The air outlet pipe is arranged on the tail end cover. An air outlet cavity is formed inside the tail end cover, and the air outlet cavity communicates all the outer cavities with the air outlet pipe.

[0020] Preferably, the end of the rotating shaft passes through the tail end cover, and the two are connected through a sealed bearing.

[0021] Preferably, a sealing strip is installed at the position where the axial partition plate contacts the rotating shaft, and a sealing strip is installed at the position where the axial blade contacts the inner wall of the air inlet cavity.

[0022] Preferably, the air inlet elastic piece is installed on the side of the air inlet hole close to the air inlet cavity; the air outlet elastic piece is installed on the side of the air outlet hole close to the outer cavity.

[0023] Preferably, the power system is a stepper motor.

[0024] (III) Beneficial effects

[0025] The present invention provides an axial air inlet type air compressor. Compared with the prior art, the following beneficial effects are achieved:

[0026] In the embodiment of the present invention, the rotating shaft of the air compressor drives the axial blade to swing reciprocally forward and backward in the air intake cavity. When the axial blade moves away from the axial partition, the air outlet elastic piece closes, creating a negative pressure in the air intake cavity between the axial blade and the axial partition, forcing the air intake elastic piece to undergo elastic deformation. The air outside the air compressor is successively inhaled into the air intake cavity through the air intake groove, the hollow cavity, and the air intake hole. When the axial blade approaches the axial partition, the air intake elastic piece closes, generating a positive pressure in the air intake cavity between the axial blade and the axial partition, forcing the air outlet elastic piece to undergo elastic deformation. The compressed air in the air intake cavity enters the outer cavity through the air outlet hole and is then blown out through the air outlet pipe, thus realizing the function of the air compressor. Compared with the traditional pendulum air compressor, the structure of this air compressor is simple, occupies less space, and has a low cost. Moreover, the external air enters the air compressor from the air intake groove, which can cool the rotating shaft and the internal structure of the air compressor, improving the heat dissipation effect and effectively solving the problems of complex structure, large space occupation, and poor heat dissipation effect of the air compressor of the cement transport vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0028] Figure 1 Isometric view of the air compressor in the embodiment of the present invention;

[0029] Figure 2 Axial sectional view of the air compressor in the embodiment of the present invention;

[0030] Figure 3 Radial sectional view of the air compressor in the embodiment of the present invention;

[0031] Figure 4 Isometric view of the rotating shaft and the axial blade in the embodiment of the present invention;

[0032] Figure 5 Structural schematic diagram of the cylinder barrel in the embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0034] In view of the deficiencies of the prior art, the present invention provides an axial intake air compressor, which solves the problems of complex structure, large occupied space and poor heat dissipation effect of the air compressor.

[0035] The technical solutions in the embodiments of the present application are used to solve the above technical problems, and the general idea is as follows:

[0036] In the embodiment of the present invention, the rotating shaft of the air compressor drives the axial blades to swing back and forth in the intake cavity. When the axial blades move away from the axial partition, the outlet elastic piece closes, so that a negative pressure is generated in the intake cavity between the axial blades and the axial partition, forcing the intake elastic piece to produce elastic deformation. The air outside the air compressor is successively sucked into the intake cavity through the intake groove, the hollow cavity and the intake hole; when the axial blades approach the axial partition, the intake elastic piece closes, and a positive pressure is generated in the intake cavity between the axial blades and the axial partition, forcing the outlet elastic piece to produce elastic deformation. The compressed air in the intake cavity enters the outer cavity through the air outlet hole and is then blown out from the air outlet pipe, thus realizing the function of the air compressor. Compared with the traditional pendulum air compressor, the structure of the air compressor is simple, the occupied space is small, the cost is low, and the external air enters the air compressor from the intake groove, which can cool the rotating shaft and the internal structure of the air compressor, improve the heat dissipation effect, and effectively solve the problems of complex structure, large occupied space and poor heat dissipation effect of the air compressor of the cement transport vehicle.

[0037] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the accompanying drawings of the specification and specific embodiments.

[0038] Embodiment:

[0039] As Figures 1 to 5 shown, the present invention provides an axial intake air compressor, which includes:

[0040] A cylinder barrel 10, in which a plurality of axial partitions 20 are arranged. The axial partitions 20 divide the cylinder barrel 10 into an inner cavity and a plurality of outer cavities 11; both ends of the inner cavity are closed, the head end of the outer cavity 11 is closed, and the tail end is communicated with an air outlet pipe 12;

[0041] A rotating shaft 30, which penetrates the inner cavity along the axis of the cylinder barrel 10 and is connected to the closed structures at both ends of the inner cavity through sealed bearings (not shown in the figure). The rotating shaft 30 is in sealed contact with the axial partition 20 to divide the inner cavity into a plurality of intake cavities 13;

[0042] Axial blades 40 corresponding to the intake cavities 13 one by one are arranged on the outer wall of the rotating shaft 30. The axial blades 40 are accommodated in the intake cavities 13 and are in sealed contact with the inner walls of the intake cavities 13;

[0043] A hollow cavity is formed inside the axial blade 40, and an air inlet groove 31 communicating with the hollow cavity is formed at the head end of the rotating shaft 30; an air inlet hole 41 communicating the hollow cavity with the air inlet cavity 13 is formed on the axial blade 40, and an air inlet elastic piece 42 is arranged at the air inlet hole 41;

[0044] An air outlet hole 21 communicating the air inlet cavity 13 with the outer cavity 11 is formed on the axial partition plate 20, and an air outlet elastic piece 22 is arranged at the air outlet hole 21;

[0045] The end of the rotating shaft 30 is connected to a power system (not shown in the figure), and the rotating shaft 30 rotates forward and backward reciprocally under the drive of the power system.

[0046] The rotating shaft 30 of the air compressor drives the axial blade 40 to swing forward and backward reciprocally in the air inlet cavity 13. When the axial blade 40 moves away from the axial partition plate 20, the air outlet elastic piece 22 closes, so that a negative pressure is generated in the air inlet cavity 13 between the axial blade 40 and the axial partition plate 20, forcing the air inlet elastic piece 42 to generate elastic deformation. The air outside the air compressor is successively sucked into the air inlet cavity 13 through the air inlet groove 31, the hollow cavity and the air inlet hole 41; when the axial blade 40 approaches the axial partition plate 20, the air inlet elastic piece 42 closes, and a positive pressure is generated in the air inlet cavity 13 between the axial blade 40 and the axial partition plate 20, forcing the air outlet elastic piece 22 to generate elastic deformation. The compressed air in the air inlet cavity 13 enters the outer cavity 11 through the air outlet hole 21 and is then blown out from the air outlet pipe 12, thus realizing the function of the air compressor. Compared with the traditional pendulum type air compressor, the structure of the air compressor is simple, occupies less space and has a low cost. Moreover, the external air enters the air compressor from the air inlet groove 31, which can cool the rotating shaft 30 and the internal structure of the air compressor, improving the heat dissipation effect and effectively solving the problems of complex structure, large occupied space and poor heat dissipation effect of the air compressor of the cement transport vehicle.

[0047] As Figure 3 shown, the number of the axial partition plates 20, the air inlet cavities 13 and the axial blades 40 is not less than two. When the axial blade 40 swings forward and backward reciprocally in the air inlet cavity 13, while one side of the axial blade 40 intakes air, the other side discharges air. Two functions are realized by the same action, greatly improving the working efficiency of the air compressor.

[0048] As Figure 2 shown, a head end cover 14 is installed at the head end of the cylinder barrel 10. The head end cover 14 seals the inner cavity and the outer cavity 11 and is connected to the rotating shaft 30 through a sealed bearing. The head end cover 14 is detachable, which is convenient for cleaning and maintaining the air compressor.

[0049] As Figure 1 、 Figure 2As shown, a filter cover 50 is sleeved outside the head end cover 14, and a filter element 51 is installed on the filter cover 50. The filter element 51 filters the air entering the air compressor to prevent impurity particles from entering the air compressor and causing internal structure failures.

[0050] As Figure 1 , Figure 2 shown, a terminal cover 15 is installed at the end of the cylinder barrel 10. The air outlet pipe 12 is arranged on the terminal cover 15. An air outlet cavity 16 is formed inside the terminal cover 15, and the air outlet cavity 16 communicates all the outer cavities 11 with the air outlet pipe 12.

[0051] As Figure 2 shown, the end of the rotating shaft 30 passes through the terminal cover 15, and the two are connected by a sealed bearing (not shown in the figure).

[0052] As Figure 2 , Figure 3 shown, a sealing strip is installed at the position where the axial partition plate 20 contacts the rotating shaft 30, and a sealing strip is also installed at the position where the axial blade 40 contacts the inner wall of the air inlet cavity 13 to prevent air leakage when the air compressor works. The sealing strip is an easily worn part and is convenient for replacement.

[0053] As Figures 3 to 5 shown, the intake spring piece 42 is installed on the side of the intake hole 41 close to the air inlet cavity 13; the outlet spring piece 22 is installed on the side of the outlet hole 21 close to the outer cavity 11.

[0054] The power system is prior art (for example: stepper motor; motor with additional crankshaft, connecting rod and rocker arm, etc.), and will not be elaborated here.

[0055] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0056] In the embodiment of the present invention, the rotating shaft of the air compressor drives the axial blade to swing back and forth in the air inlet cavity. When the axial blade moves away from the axial partition plate, the outlet spring piece closes, causing a negative pressure in the air inlet cavity between the axial blade and the axial partition plate, forcing the intake spring piece to elastically deform. The air outside the air compressor is successively sucked into the air inlet cavity through the intake groove, the hollow cavity and the intake hole; when the axial blade moves close to the axial partition plate, the intake spring piece closes, and a positive pressure is generated in the air inlet cavity between the axial blade and the axial partition plate, forcing the outlet spring piece to elastically deform. The compressed air in the air inlet cavity enters the outer cavity through the outlet hole and is then blown out from the air outlet pipe, thus realizing the function of the air compressor. Compared with the traditional pendulum air compressor, the structure of the air compressor is simple, occupies less space, and has a low cost. Moreover, the external air enters the air compressor from the intake groove, which can cool the rotating shaft and the internal structure of the air compressor, improving the heat dissipation effect and effectively solving the problems of complex structure, large occupied space and poor heat dissipation effect of the air compressor of the cement transport vehicle.

[0057] It should be noted that, in this document, relational terms such as first and second are only used 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 "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the said element.

[0058] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An axial intake air compressor, characterized in that, the air compressor comprises: a cylinder barrel (10), wherein a plurality of axial partition plates (20) are arranged inside the cylinder barrel (10), and the axial partition plates (20) divide the cylinder barrel (10) into an inner cavity and a plurality of outer cavities (11); both ends of the inner cavity are closed, the head end of the outer cavity (11) is closed, and the tail end is communicated with an air outlet pipe (12); a rotating shaft (30), the rotating shaft (30) penetrates through the inner cavity along the axis of the cylinder barrel (10) and is connected with the closed structures at both ends of the inner cavity through sealed bearings, and the rotating shaft (30) is in sealed contact with the axial partition plates (20) to divide the inner cavity into a plurality of intake cavities (13); axial blades (40) corresponding to the intake cavities (13) one by one are arranged on the outer wall of the rotating shaft (30), the axial blades (40) are accommodated in the intake cavities (13) and are in sealed contact with the inner walls of the intake cavities (13); a hollow cavity is formed in the axial blade (40), and an intake groove (31) communicated with the hollow cavity is formed at the head end of the rotating shaft (30); an intake hole (41) communicating the hollow cavity with the intake cavity (13) is formed on the axial blade (40), and an intake elastic sheet (42) is arranged on the intake hole (41); an air outlet hole (21) communicating the intake cavity (13) with the outer cavity (11) is formed on the axial partition plate (20), and an air outlet elastic sheet (22) is arranged on the air outlet hole (21); the tail end of the rotating shaft (30) is connected with a power system; the numbers of the axial partition plates (20), the intake cavities (13) and the axial blades (40) are all not less than two; a head end cover (14) is installed at the head end of the cylinder barrel (10), the head end cover (14) seals the inner cavity and the outer cavity (11) and is connected with the rotating shaft (30) through a sealed bearing.

2. The axial intake air compressor according to claim 1, characterized in that, a filter cover (50) is sleeved outside the head end cover (14), and a filter element (51) is installed on the filter cover (50).

3. The axial intake air compressor according to claim 1, characterized in that, a tail end cover (15) is installed at the tail end of the cylinder barrel (10), the air outlet pipe (12) is arranged on the tail end cover (15), an air outlet cavity (16) is formed on the inner side of the tail end cover (15), and the air outlet cavity (16) communicates all the outer cavities (11) with the air outlet pipe (12).

4. The axial intake air compressor according to claim 3, characterized in that, the tail end of the rotating shaft (30) penetrates through the tail end cover (15), and the two are connected through a sealed bearing.

5. The axial intake air compressor according to any one of claims 1 to 4, characterized in that, sealing strips are installed at the positions where the axial partition plates (20) are in contact with the rotating shaft (30), and sealing strips are installed at the positions where the axial blades (40) are in contact with the inner walls of the intake cavities (13).

6. The axial intake air compressor according to any one of claims 1 to 4, characterized in that, the intake elastic sheet (42) is installed on the side of the intake hole (41) close to the intake cavity (13); the air outlet elastic sheet (22) is installed on the side of the air outlet hole (21) close to the outer cavity (11).

7. The shaft inlet air compressor according to any one of claims 1 to 4, characterized in that, the power system is a stepper motor.

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