Combined impeller air compressor

Abstract

The application provides a combined impeller air compressor, which comprises a shaft and a blade group, the shaft is fixedly arranged at a driving end of the air compressor, the blade group is clamped on the shaft, the blade group comprises a first impeller and a second impeller which are clamped on the shaft respectively; the first impeller and the second impeller respectively comprise a disc which is clamped on the shaft, and blades which are fixedly arranged on the disc, the blades are fixed on the disc through a locking mechanism, and the disc of the first impeller and the disc of the second impeller form a circular trapezoid. The combined impeller air compressor can form a complete blade group through the cooperation of the first impeller and the second impeller, and can also use the first impeller or the second impeller alone, so that the air compressor can be applied to different fields. Through the arrangement of the fastening mechanism, the first impeller can be fixed on the shaft, and the working efficiency of the blade group is not affected.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air compressors, in particular to a combined impeller air compressor. BACKGROUND

[0002] The working principle of an air compressor is usually to store compressed gas in an accumulator, and when needed, the gas is delivered to the required location through a pipeline. Different types of air compressors have different compression methods, such as piston, screw, turbine, and centrifugal.

[0003] A centrifugal air compressor is a device that uses a high-speed rotating centrifugal impeller to drive the blades on the impeller to rotate at high speed, doing work on the air to increase the pressure of the air. It compresses air or other gases and stores high-pressure gases in a container for use. Air compressors have many applications, such as aerodynamics, industrial automation, mining machinery, automobiles, aerospace, etc.

[0004] Currently, the existing centrifugal air compressor impellers are all integrally cast structures, fixedly installed on the shaft, which is not easy to disassemble, and not easy to repair after damage. The blades in the impeller are in a fixed state, i.e. they are shaped during casting, so when different performance and efficiency air compressors are needed, the impeller cannot be replaced in time, and only multiple air compressors can be used, resulting in cost waste. SUMMARY

[0005] The purpose of the present application is to provide a combined impeller air compressor to solve the problem of inconvenient replacement of the impeller and non-adjustable blades of the air compressor in the prior art.

[0006] To achieve the above-mentioned purpose, the technical solution of the present application is as follows:

[0007] A combined impeller air compressor, comprising:

[0008] A shaft is fixedly arranged at the driving end of the air compressor; a leaf group is clamped on the shaft, the leaf group comprising a first impeller and a second impeller clamped on the shaft respectively; the first impeller is fixed on the shaft by a fastening mechanism, and the second impeller is fixed on the shaft by the first impeller;

[0009] The first impeller and the second impeller each comprise a disc clamped on the shaft and a blade fixedly arranged on the disc, the blade being fixed on the disc by a locking mechanism, and the disc of the first impeller and the disc of the second impeller form a circular trapezoid.

[0010] Further, the locking mechanism comprises a strip-shaped hole formed on the wheel disc, a clamping plate inserted into the strip-shaped hole, and a screw threadedly connected to the clamping plate, the clamping plate is fixedly arranged at the bottom of the vane, and the screw expands the clamping plate, and the expanded clamping plate is fastened in the strip-shaped hole.

[0011] Further, the length direction of the bottom of the clamping plate is provided with two expansion plates arranged opposite to each other, a variable groove is formed between the two expansion plates, a plurality of arc-shaped screw thread grooves are formed opposite to each other at the bottom of the two expansion plates, the screw is screwed into the arc-shaped screw thread grooves, the screw is tapered, and the minimum diameter of the screw is equal to the diameter of the screw thread groove.

[0012] Further, a circular hole is formed at the center of the wheel disc of the second impeller for the machine shaft to pass through, and a clamping mechanism is arranged between the circular hole and the machine shaft; the clamping mechanism comprises a clamping groove formed on the side surface of the machine shaft and a clamping block fixedly arranged on the inner wall of the circular hole, and the clamping block and the clamping groove are clamped.

[0013] Further, the clamping groove comprises a vertical groove formed along the axial direction of the machine shaft and an inclined groove inclined by more than 90° with respect to the vertical groove, and the vertical groove and the inclined groove are arranged in communication, and the clamping block slides along the tracks of the vertical groove and the inclined groove.

[0014] Further, a circular ring is fixedly arranged at the end of the circular hole away from the machine shaft, and the circular ring abuts against the end of the machine shaft.

[0015] Further, the fastening mechanism comprises a first square sleeve fixedly arranged at the center of the end of the machine shaft, a second square sleeve fixedly arranged at the center of the wheel disc of the first impeller, and a clamping piece clamping the first square sleeve and the second square sleeve, and the first square sleeve is inserted into the second square sleeve.

[0016] Further, the clamping piece comprises a sliding groove formed on the side wall of the first square sleeve, a sliding block slidingly arranged in the sliding groove, and a jacking rod slidingly arranged in the first square sleeve, one end of the sliding block located in the first square sleeve is arranged as an inclined surface, the jacking rod abuts against the inclined surface, and one end of the sliding block located outside the first square sleeve abuts against the second square sleeve.

[0017] Further, a locking block is fixedly arranged at one end of the sliding block located outside the first square sleeve, a locking groove is formed at the position of the locking block of the second square sleeve, and the surfaces of the locking block and the locking groove in contact with each other are arranged as mutually adapted inclined surfaces.

[0018] Further, the upper and lower ends of the chute are provided with baffles, the sliding block and the baffle are provided with elastic sheets, the center of the wheel disc of the first impeller is provided with a screw rod, the screw rod is screwed with the wheel disc of the first impeller, and the screw rod is rotationally connected with the top rod.

[0019] Compared with the prior art, the present application has the following beneficial effects:

[0020] The combined impeller air compressor has the following advantages.

[0021] In addition, the locking mechanism ensures that the blades on the wheel disc can be replaced, the efficiency of the blade group can be changed, the applicability is improved, the arc-shaped thread groove and the screw are matched to ensure that the blades can be fixed on the wheel disc, the stability of the blades is improved, the vertical groove and the inclined groove are matched to ensure that the wheel disc of the second impeller can be fixed on the shaft, and the stability of the second impeller is improved.

[0022] In addition, the first square sleeve and the second square sleeve are matched to ensure the stability of the first impeller, the locking block and the locking groove are matched to fix the first impeller on the shaft, and the stability of the first impeller is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the application, and are incorporated herein for explanation by reference. In the drawings:

[0024] Figure 1 The overall structure of the combined impeller air compressor is shown in the accompanying drawings.

[0025] Figure 2 The exploded view of the combined impeller air compressor is shown in the accompanying drawings.

[0026] Figure 3 The exploded view of the combined impeller air compressor is shown in the accompanying drawings.

[0027] Figure 4 The exploded view of the combined impeller air compressor is shown in the accompanying drawings.

[0028] Figure 5 A portion of the drawings, as shown in Figure 4 A portion of the drawings, as shown in

[0029] Figure 6 A portion of the drawings, as shown in

[0030] Figure 7 A portion of the drawings, as shown in Figure 6 A portion of the drawings, as shown in

[0031] Figure 8 A portion of the drawings, as shown in

[0032] BRIEF DESCRIPTION OF DRAWINGS

[0033] 1. shaft;

[0034] 2A, first impeller; 2B, second impeller; 201, wheel disc; 202, blade;

[0035] 3. fastening mechanism; 301, first sleeve; 302, second sleeve;

[0036] 303, clamping piece; 3031, sliding groove; 3032, sliding block; 3033, ejector rod; 3034, locking block; 3035, locking groove; 3036, baffle; 3037, elastic sheet; 3038, screw rod;

[0037] 4. locking mechanism; 401, strip-shaped hole; 402, clamping plate; 403, screw; 404, expansion plate; 405, arc-shaped threaded groove;

[0038] 5. round hole;

[0039] 6. clamping mechanism; 601, clamping groove; 6011, vertical groove; 6012, inclined groove;

[0040] 602, clamping block; 603, circular ring. DETAILED DESCRIPTION

[0041] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0042] In the description of the present application, it should be noted that if the terms indicating the orientation or position relationship such as "upper", "lower", "inner", "back" and the like appear, they are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, if the terms "first", "second" and the like appear, they are also only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0043] Furthermore, in the description of the present application, unless otherwise explicitly defined, the terms "mounting", "connecting", "connection" should be understood in a broad sense. For example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood in combination with specific circumstances.

[0044] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0045] The present embodiment relates to a combined impeller air compressor, as a whole, as shown in Figure 1 and Figure 2 , it includes a shaft 1 and a leaf group.

[0046] Among them, the shaft 1 is fixedly arranged at the driving end of the air compressor, the leaf group is clamped on the shaft 1, the leaf group includes a first impeller 2A and a second impeller 2B clamped on the shaft 1 respectively; the first impeller 2A is fixed on the shaft 1 through a fastening mechanism 3, and the second impeller 2B is fixed on the shaft 1 through the first impeller 2A; the first impeller 2A and the second impeller 2B respectively include a disc 201 clamped on the shaft 1, and a blade 202 fixedly arranged on the disc 201, the blade 202 is fixed on the disc 201 through a locking mechanism 4, and the disc 201 of the first impeller 2A and the disc 201 of the second impeller 2B form a circular trapezoid.

[0047] It is worth mentioning that the centrifugal compressor is a common air compressor in the prior art, and its structure principle is the same as that of the existing air compressor, which will not be repeated here. The first impeller 2A and the second impeller 2B are installed on the shaft 1 to form a complete leaf group. In this way, only the first impeller 2A can be installed during installation, or only the second impeller 2B can be installed, or they can be installed in combination. Different installation methods can achieve different effects, which can ensure that the air compressor is suitable for different fields. When installing the second impeller 2B, it is only fixed through the first impeller 2A, and the blade 202 can be selected not to be installed, which ensures the stability of the second impeller 2B during operation. Figure 2 As can be seen from the drawings, the disc 201 of the first impeller 2A abuts against the disc 201 of the second impeller 2B, and the first impeller 2A is fixed through the fastening mechanism 3, that is, the first impeller 2A and the second impeller 2B are both fixed on the shaft 1 through the fastening mechanism 3, which ensures the stability of the leaf group during rotation, and the blade 202 is fixed on the disc 201 through the locking mechanism 4, which can ensure that the blade 202 is easily disassembled and replaced with different angle and different radian blades 202 to achieve different effects.

[0048] Based on the above overall introduction, an exemplary structure of the combined impeller air compressor of the embodiment is shown in Figure 4 The locking mechanism 4 includes a strip-shaped hole 401 formed in the wheel disc 201, a clamping plate 402 inserted into the strip-shaped hole 401, and a screw 403 screwed on the clamping plate 402. The clamping plate 402 is fixedly arranged at the bottom of the blade 202, the screw 403 expands the clamping plate 402, and the expanded clamping plate 402 is fastened in the strip-shaped hole 401. The lengthwise two sides of the bottom of the clamping plate 402 are respectively provided with expansion plates 404, a variable groove is formed between the two expansion plates 404, a plurality of arc-shaped threaded grooves 405 are formed in the bottom of the two expansion plates 404 opposite to each other, the screw 403 is screwed in the arc-shaped threaded grooves 405, the screw 403 is tapered, and the smallest diameter of the screw 403 is equal to the diameter of the threaded groove.

[0049] It should be noted that the strip-shaped hole 401 penetrates along the height of the wheel disc 201, the clamping plate 402 is arranged in the strip-shaped hole 401, the bottom of the clamping plate 402 is parallel to the bottom of the wheel disc 201, the screw 403 is fastened on the clamping plate 402, and the thickness of the clamping plate 402 changes to be fastened in the strip-shaped hole 401. Such an arrangement can ensure that the blade 202 does not shake during rotation, thereby not affecting the working efficiency of the blade group. The reason for the change in the thickness of the clamping plate 402 is that the screw 403 is not tapered, and after entering the arc-shaped threaded groove 405, the diameter of the screw 403 becomes larger and larger, which pushes the two expansion plates 404 outward, that is, the distance between the two expansion plates 404 in the variable groove becomes larger, and the two expansion plates 404 abut against the wall of the strip-shaped hole 401, thereby completing the fastening. The arc-shaped threaded grooves 405 can be provided in multiple groups along the variable groove. This fastening mode does not occupy space and does not have the problem of weight deviation, thereby ensuring the stability of the blade group during rotation.

[0050] As preferred, as shown in Figure 3 In the embodiment, a circular hole 5 is formed in the center of the wheel disc 201 of the second impeller 2B for the machine shaft 1 to pass through, and a clamping mechanism 6 is arranged between the circular hole 5 and the machine shaft 1. The clamping mechanism 6 includes a clamping groove 601 formed in the side surface of the machine shaft 1 and a clamping block 602 fixedly arranged on the inner wall of the circular hole 5, and the clamping block 602 and the clamping groove 601 are clamped. The clamping groove 601 includes a vertical groove 6011 formed along the axial direction of the machine shaft 1 and an inclined groove 6012 inclined by more than 90° with respect to the vertical groove 6011, and the vertical groove 6011 and the inclined groove 6012 are communicatively arranged, and the clamping block 602 slides along the tracks of the vertical groove 6011 and the inclined groove 6012. The end of the circular hole 5 away from the machine shaft 1 is fixedly provided with a circular ring 603, and the circular ring 603 abuts against the end of the machine shaft 1.

[0051] Specifically, the size of the round hole 5 is the same as that of the shaft 1, which ensures that the second impeller 2B does not shake when it is sleeved on the shaft 1. The circular ring 603 prevents the second impeller 2B from being inserted too deeply into the shaft 1 and can also cooperate with the clamping block 602 to fasten the second impeller 2B on the shaft 1. Specifically, the disc 201 of the second impeller 2B is inserted into the shaft 1, at which time the clamping block 602 enters the vertical slot 6011. When the clamping block 602 reaches the bottom of the vertical slot 6011, the second impeller 2B is rotated. Due to the inclined slot 6012, the clamping block 602 moves along the inclined slot 6012. The circular ring 603 has abutted with the shaft 1, so that the circular ring 603 and the clamping block 602 can be fastened on the shaft 1. The angle between the inclined slot 6012 and the vertical slot 6011 is greater than 90°. In this way, the clamping block 602 can be fastened. The second impeller 2B can also be clamped between the first impeller 2A and the shaft 1 to prevent the second impeller 2B from rotating, thereby completely fastening the second impeller 2B. In the present embodiment, the clamping block 602 and the clamping groove 601 are provided in four groups, which can ensure the uniformity of fastening. Of course, other numbers of groups can also be selected according to actual conditions.

[0052] As a preferred embodiment, as shown in Figure 6 the present embodiment, the fastening mechanism 3 includes a first square sleeve 301 fixedly arranged at the center of the end of the shaft 1, a second square sleeve 302 fixedly arranged at the center of the disc 201 of the first impeller 2A, and a clamping piece 303 clamping the first square sleeve 301 and the second square sleeve 302, the first square sleeve 301 being inserted into the second square sleeve 302. The clamping piece 303 includes a sliding groove 3031 opened in the side wall of the first square sleeve 301, a sliding block 3032 slidingly arranged in the sliding groove 3031, and a top rod 3033 slidingly arranged in the first square sleeve 301. One end of the sliding block 3032 located in the first square sleeve 301 is provided with an inclined surface, the top rod 3033 abuts against the inclined surface, and the other end of the sliding block 3032 located outside the first square sleeve 301 abuts against the second square sleeve 302.

[0053] It should be noted that the first party cover 301 is inserted outside the second party cover 302, and the first party cover 301 slides on the second party cover 302, and the clamping piece 303 can lock the first party cover 301 and the second party cover 302, the clamping piece 303 slides transversely on the second party cover 302, and when it slides out, it can be clamped with the first party cover 301. Specifically, the sliding groove 3031 is transversely arranged on the side surface of the first party cover 301, the sliding block 3032 slides in the sliding groove 3031, the inclined surface can facilitate the top rod 3033 to push the sliding block 3032 to slide along the sliding groove 3031, the size of the top rod 3033 is the same as that of the first party cover 301, so that the sliding block 3032 can be completely pushed out, and when the top rod 3033 pushes the sliding block 3032 to extend out of the sliding groove 3031, the sliding block 3032 can abut against the inner wall of the second party cover 302. The first party cover 301 is provided with four sliding grooves 3031 and sliding blocks 3032, which can ensure the uniformity of the locking, and the top rod 3033 can simultaneously push the four sliding blocks 3032 to move, so as to ensure that the four sliding blocks 3032 abut on the second party cover 302 at the same time.

[0054] As preferred, as shown in Figure 7 and Figure 8 The sliding block 3032 of the embodiment is fixedly provided with a locking block 3034 at one end outside the first party cover 301, the second party cover 302 is provided with a locking groove 3035 at the position of the locking block 3034, and the surfaces of the locking block 3034 and the locking groove 3035 in contact with each other are provided as mutually adapted inclined surfaces. The upper and lower ends of the sliding groove 3031 are provided with baffles 3036, the sliding block 3032 and the baffle 3036 are provided with elastic sheets 3037 therebetween, the screw rod 3038 is provided through the center of the disc 201 of the first impeller 2A, the screw rod 3038 is screwed with the disc 201 of the first impeller 2A, and the screw rod 3038 is rotationally connected with the top rod 3033.

[0055] Specifically, the locking block 3034 is located in the middle of the sliding block 3032, the height of the locking block 3034 is less than the height of the sliding block 3032, the elastic sheet 3037 is arranged at the position, the baffle 3036 ensures that the elastic sheet 3037 is located in the sliding groove 3031, when the top rod 3033 is pulled out, the elastic sheet 3037 can push the sliding block 3032 and the locking block 3034 back to the first square sleeve 301, and the locking block 3034 and the locking groove 3035 are also separated, the first impeller 2A can be removed, the locking block 3034 and the locking groove 3035 can ensure that the first square sleeve 301 and the second square sleeve 302 cannot be separated after clamping, and the inclined surface of the locking block 3034 and the locking groove 3035 can ensure that the first square sleeve 301 and the second square sleeve 302 cannot shake after locking, the locking effect is improved, the screw rod 3038 is screwed on the wheel disc 201 of the first impeller 2A, the height can be adjusted by rotating, so that the top rod 3033 is pushed to slide in the first square sleeve 301, the top rod 3033 can also be ensured to stay at a preset position, and the first square sleeve 301 and the second square sleeve 302 are located at the center of the shaft 1 and the first impeller 2A, so that the weight deviation problem of the blade group during rotation can be avoided.

[0056] The combined impeller air compressor in the embodiment can form a complete blade group through the cooperation of the first impeller 2A and the second impeller 2B, and can also use the first impeller 2A or the second impeller 2B alone, so that the air compressor can be applied to different fields, the first impeller 2A can be fixed on the shaft 1 through the fastening mechanism 3, and the working efficiency of the blade group is not affected, the second impeller 2B can be fixed on the shaft 1 through the cooperation of the clamping mechanism 6 and the first impeller 2A, and the working efficiency of the blade group is also not affected.

[0057] The above only describes the preferred embodiments of the present application and should not be used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A combined impeller air compressor, characterized by, The utility model relates to a combined impeller air compressor which comprises a shaft (1) fixedly arranged at the driving end of an air compressor, a blade set clamped on the shaft (1), the blade set comprising a first impeller (2A) and a second impeller (2B) clamped on the shaft (1) respectively, the first impeller (2A) being fixed on the shaft (1) through a fastening mechanism (3), the second impeller (2B) being fixed on the shaft (1) through the first impeller (2A), the first impeller (2A) and the second impeller (2B) each comprising a disc (201) clamped on the shaft (1) and blades (202) fixedly arranged on the disc (201), the blades (202) being fixed on the disc (201) through a locking mechanism (4), the discs (201) of the first impeller (2A) and the second impeller (2B) forming a circular trapezoid, the fastening mechanism (3) comprising a first square sleeve (301) fixedly arranged at the center of the end of the shaft (1), a second square sleeve (302) fixedly arranged at the center of the disc (201) of the first impeller (2A), and a clamping piece (303) clamping the first square sleeve (301) and the second square sleeve (302), the first square sleeve (301) being inserted into the second square sleeve (302), the clamping piece (303) comprising a sliding groove (3031) formed in the side wall of the first square sleeve (301), a sliding block (3032) slidingly arranged in the sliding groove (3031), and a top rod (3033) slidingly arranged in the first square sleeve (301), one end of the sliding block (3032) located in the first square sleeve (301) being provided with an inclined surface, the top rod (3033) abutting against the inclined surface, and one end of the sliding block (3032) located outside the first square sleeve (301) abutting against the second square sleeve (302).

2. The combined impeller air compressor according to claim 1, wherein the locking mechanism (4) comprises a strip-shaped hole (401) formed in the disc (201), a clamping plate (402) inserted into the strip-shaped hole (401), and a screw (403) screwed on the clamping plate (402), the clamping plate (402) being fixedly arranged at the bottom of the blade (202), the screw (403) expanding the clamping plate (402), and the expanded clamping plate (402) being fastened in the strip-shaped hole (401).

3. The combined impeller air compressor according to claim 2, wherein the clamping plate (402) is provided with expansion plates (404) oppositely arranged at the lengthwise direction of the bottom of the clamping plate (402), a variable groove being formed between the two expansion plates (404), a plurality of arc-shaped screw grooves (405) being oppositely formed at the bottom of the two expansion plates (404), the screw (403) being screwed in the arc-shaped screw grooves (405), the screw (403) being provided in a conical shape, and the minimum diameter of the screw (403) being equal to the diameter of the screw groove.

4. The combined impeller air compressor according to claim 3, wherein ​ ​ ​ ​ ​ ​ ​ ​ The disc (201) of the second impeller (2B) is provided with a circular hole (5) for the machine shaft (1) to pass through, and a clamping mechanism (6) is arranged between the circular hole (5) and the machine shaft (1). The clamping mechanism (6) comprises a clamping groove (601) arranged on the side surface of the machine shaft (1) and a clamping block (602) fixedly arranged on the inner wall of the circular hole (5), and the clamping block (602) and the clamping groove (601) are clamped.

5. The combined impeller air compressor according to claim 4, characterized in that: The clamping groove (601) comprises a vertical groove (6011) arranged along the axial direction of the machine shaft (1) and an inclined groove (6012) inclined by more than 90° with respect to the vertical groove (6011), and the vertical groove (6011) and the inclined groove (6012) are arranged in communication, and the clamping block (602) slides along the tracks of the vertical groove (6011) and the inclined groove (6012).

6. The combined impeller air compressor according to claim 4, characterized in that: The circular hole (5) is fixedly provided with a circular ring (603) at the end away from the machine shaft (1), and the circular ring (603) abuts against the end of the machine shaft (1).

7. The combined impeller air compressor according to claim 1, characterized in that: The sliding block (3032) is fixedly provided with a locking block (3034) at the end located outside the first square sleeve (301), the second square sleeve (302) is provided with a locking groove (3035) at the position of the locking block (3034), and the surfaces of the locking block (3034) and the locking groove (3035) in contact with each other are provided as mutually adapted inclined surfaces.

8. The combined impeller air compressor according to claim 1, characterized in that: The sliding groove (3031) is provided with a baffle (3036) at the upper and lower ends, a spring piece (3037) is arranged between the sliding block (3032) and the baffle (3036), a screw rod (3038) is arranged to pass through the center of the disc (201) of the first impeller (2A), the screw rod (3038) is screwed with the disc (201) of the first impeller (2A), and the screw rod (3038) is rotationally connected with the top rod (3033).

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