Split type air compressor shell

Abstract

The utility model provides a split type air compressor shell, which belongs to the technical field of air compressors and comprises a pressure end volute, a main shell and a control end shell, the main shell comprises a first shell module, a waterproof sealing gasket and a second shell module which are sequentially arranged along the axial direction, and the rear end of the first shell module and the front end of the second shell module are fixed by bolts; an edge folding structure is arranged on the periphery of the rear end of the first shell module, an annular limiting groove is formed in the inner side of the edge folding structure, and the front end of the second shell module extends into the limiting groove and enables the waterproof sealing gasket to abut against the groove bottom of the limiting groove. According to the split type air compressor shell provided by the utility model, the second shell module extends into the limiting groove in the inner side of the folded edge structure by virtue of the fastening effect of the bolt and extrudes the waterproof sealing gasket between the second shell module and the limiting groove so as to improve the sealing effect and the waterproof effect; the split modular preparation of the main shell of the air compressor is realized, the miniaturization and light weight of products are facilitated, and the structure of a generator is more compact.

Description

Technical Field

[0001] The utility model belongs to the technical field of air compressors, and more specifically, relates to a split air compressor casing. Background Art

[0002] The existing air compressor casing includes a compression end volute, a main casing and a control end casing; the main casing is generally cast in one piece, and its wall thickness and weight cannot be effectively reduced due to the limitations of the casting process, which is not conducive to the miniaturization, modular integration design and lightweight design of the product. Utility Model Content

[0003] The purpose of the utility model is to provide a split air compressor housing, aiming to realize split casting of the housing so as to facilitate miniaturized modular integrated design of the product.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide a split air compressor casing, including a compression end volute, a main casing and a control end casing, the main casing including a first casing module, a waterproof sealing gasket and a second casing module arranged in sequence along the axial direction, the rear end of the first casing module and the front end of the second casing module are fixed by means of bolts; the outer periphery of the rear end of the first casing module is provided with a folding structure, and the inner side of the folding structure is provided with an annular limiting groove, the front end of the second casing module extends into the limiting groove and presses the waterproof sealing gasket against the bottom of the limiting groove.

[0005] As another embodiment of the present application, the front end of the second shell module has a circumference having a clearance notch for adapting to the folding structure, and the folding structure is sleeved on the outside of the clearance notch and rests on the rear end surface of the clearance notch.

[0006] As another embodiment of the present application, a plurality of first connection parts protruding outward are evenly distributed around the circumference of the folding structure, a plurality of second connection parts protruding outward are provided at the front end of the second shell module, the second connection parts are located on the rear side of the clearance notch, the plurality of first connection parts and the plurality of second connection parts are abutted one by one, and through bolt holes are provided on the first connection parts and the second connection parts.

[0007] As another embodiment of the present application, a connecting ring protruding outward is further provided in the middle of the second housing module, and the connecting ring abuts against the front connecting surface of the control end housing and is fixed by means of bolts.

[0008] As another embodiment of the present application, the connecting ring is attached to the rear side of the second connecting portion.

[0009] As another embodiment of the present application, the front end of the first housing module has a mounting ring protruding outward, and the mounting ring abuts against the mounting surface of the compression end volute and is fixed by means of bolts.

[0010] As another embodiment of the present application, it also includes an air cooling structure, which includes a first air hole section located in the first shell module and a second air hole section located in the second shell module. The first air hole section and the second air hole section are connected with the aid of an air vent opened on the waterproof sealing gasket to form an air cooling channel; the front end of the first air hole section is used to connect to the inner cavity of the compression end volute, and the tail end of the second air hole section extends into the cavity of the control end shell.

[0011] As another embodiment of the present application, it also includes a water cooling structure, which includes a first water cooling hole and a first water channel structure located on the first shell module, and a second water cooling hole and a second water channel structure located on the second shell module; the first water channel structure and the second water channel structure are connected by means of a through hole on the waterproof sealing gasket to form a water cooling channel, and the two ends of the water cooling channel are respectively connected to the first water cooling hole and the second water cooling hole; the axial projection of the water cooling channel is spaced apart from the air cooling channel.

[0012] As another embodiment of the present application, there is an angle between the axial projections of the first water-cooling hole and the second water-cooling hole; the outer ends of the first water-cooling hole and the second water-cooling hole are connected to water-cooling pipe joints, and the water-cooling pipe joints are connected to the first shell module / the second shell module by means of a water-cooling pressure plate.

[0013] The beneficial effect of the split air compressor casing provided by the utility model is that: compared with the existing technology, the split air compressor casing of the utility model divides the main casing into a first casing module and a second casing module, and a folding structure is provided at the rear end of the first casing module. The second casing module extends into the limiting groove on the inner side of the folding structure with the help of the fastening action of bolts and squeezes the waterproof sealing gasket between the two to increase the sealing effect and waterproof effect; the split modular preparation of the air compressor main casing is realized, which is more conducive to the miniaturization and lightweight of the product, and makes the structure of the generator more compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1A schematic structural diagram of a split air compressor housing provided by an embodiment of the present utility model;

[0016] Figure 2 A front view of a split air compressor housing provided by an embodiment of the present utility model;

[0017] Figure 3 For the Figure 2 Cross-sectional view along line AA;

[0018] Figure 4 This is an exploded structural diagram of the split air compressor casing provided in an embodiment of the present utility model.

[0019] In the figure: 1. Control end housing; 2. Pressure end volute; 3. First housing module; 4. Second housing module; 5. Water-cooled pipe joint; 6. Water-cooled pressure plate; 7. Waterproof sealing gasket; 8. First water channel structure; 9. First annular water channel; 10. Second annular water channel; 11. Mounting ring; 12. Folding structure; 13. First air hole section; 14. Connecting ring. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] See also Figures 1 to 4 The split air compressor housing provided by the present invention is now described. The split air compressor housing comprises a compression end volute 2, a main housing, and a control end housing 1. The main housing comprises a first housing module 3, a waterproof sealing gasket 7, and a second housing module 4, which are arranged in sequence along the axial direction. The rear end of the first housing module 3 and the front end of the second housing module 4 are fixed by bolts. The outer periphery of the rear end of the first housing module 3 is provided with a folding structure 12, and the inner side of the folding structure 12 is provided with an annular limiting groove. The front end of the second housing module 4 extends into the limiting groove and presses the waterproof sealing gasket 7 against the bottom of the limiting groove.

[0022] Compared with the prior art, the split air compressor casing provided by the present invention divides the main casing into a first casing module 3 and a second casing module 4, and a folding structure 12 is provided at the rear end of the first casing module 3. The second casing module 4 extends into the limiting groove inside the folding structure 12 with the help of the fastening action of bolts and squeezes the waterproof sealing gasket 7 between the two to increase the sealing effect and the waterproof effect; the split modular preparation of the main casing of the air compressor is realized, which is more conducive to the miniaturization and lightweight of the product and makes the structure of the generator more compact.

[0023] The front end of the main housing near the pressure-end volute 2 is referred to as the front end, and the rear end of the main housing near the control-end housing 1 is referred to as the rear end. The front end of the first housing module 3 is used to connect to the pressure-end volute 2, and the rear end of the first housing module 3 is connected to the front end of the second housing module 4. The rear end of the second housing module 4 is used to connect to the control-end housing 1.

[0024] The waterproof sealing gasket 7 not only realizes the inner sealing between the two housing modules, but also realizes the waterproof effect of the water cooling structure. The waterproof sealing gasket 7 can be made of materials such as silica gel.

[0025] Specifically, the front end of the second housing module 4 has a circumferential clearance for adapting to the folding structure 12 , and the folding structure 12 is sleeved on the outside of the clearance and abuts against the rear end surface of the clearance.

[0026] The outer diameter of the second shell module 4 is consistent with the outer diameter of the first shell module 3. In order to facilitate the front end of the second shell module 4 to extend into the limiting groove of the folding structure 12, the circumferential part of the front end of the second shell module 4 is grooved to form an annular clearance gap at its front end. The inner diameter of the clearance gap is consistent with the inner diameter of the folding structure 12.

[0027] The folding structure 12 extends axially backward. To increase the strength of the folding structure 12 , the folding structure 12 may be thickened on its outer side so that the outer diameter of the folding structure 12 is larger than the outer diameter of the main body of the first shell module 3 .

[0028] When the front end of the second housing module 4 extends to the inner side of the folding structure 12 , the folding structure 12 is sleeved and connected to the second housing module 4 , and the rear end surface of the folding structure 12 extends to the rear end of the clearance notch.

[0029] like Figure 1 As shown, a plurality of first connection parts protruding outward are evenly distributed around the circumference of the folding structure 12, and a plurality of second connection parts protruding outward are provided at the front end of the second shell module 4. The second connection parts are located at the rear side of the clearance notch. The plurality of first connection parts and the plurality of second connection parts are in one-to-one correspondence with each other, and through bolt holes are provided on both the first connection parts and the second connection parts.

[0030] During installation, align the multiple first connecting parts of the first housing module 3 with the multiple second connecting parts of the second housing module 4, aligning their bolt holes. Bolts are inserted sequentially through the corresponding bolt holes of the first and second connecting parts and secured with nuts. The tightening action of the bolts aligns the first and second connecting parts, while the front end of the second housing module 4 presses the waterproof sealing gasket 7 against the bottom of the retaining groove, achieving waterproofing and sealing. This completes the connection and securement of the two housing modules.

[0031] In addition, a connecting ring 14 protruding outward is provided in the middle of the second housing module 4. The connecting ring 14 abuts against the front connection surface of the control end housing 1 and is fixed by bolts. The connecting ring 14 has multiple equally spaced protrusions that protrude outward in the radial direction of the second housing module 4. Similarly, a corresponding annular edge and protrusion are present on the connection surface at the front end of the control end housing 1. Bolt holes are provided in each protrusion. By fixing the corresponding bolt holes of the two protrusions with bolts, the second housing module 4 and the control end housing 1 are fixed. The connecting ring 14 is attached to the rear side of the second connecting portion. To save the volume of the second housing module 4 and promote product miniaturization and lightweighting, the connecting ring 14 is attached to the second connecting portion, so that part of the second housing module 4 extends backward into the interior of the control end housing 1, thereby shortening the overall volume of the air compressor and reducing costs.

[0032] Correspondingly, the front end of the first housing module 3 has a mounting ring 11 protruding outward, which abuts against the mounting surface of the compression end volute 2 and is fixed by bolts. The front end of the first housing module 3 forms an integrated thrust bearing structure, and a mounting ring 11 is formed on the outside of the first housing module 3. The structure of the mounting ring 11 also has multiple equally spaced protrusions, and the protrusions have axial bolt holes. Correspondingly, the rear end face of the compression end volute 2 is also provided with an annular connection structure and multiple protrusions. The mounting ring 11 and the compression end volute 2 are fixed by bolts, thereby achieving a fixed connection between the first housing module 3 and the compression end volute 2.

[0033] The split air compressor casing also includes an air cooling structure, which includes a first air hole section 13 located in the first casing module 3 and a second air hole section located in the second casing module 4. The first air hole section 13 and the second air hole section are connected with the aid of an air vent provided on the waterproof sealing gasket 7 to form an air cooling channel; the front end of the first air hole section 13 is used to connect to the inner cavity of the compression end volute 2, and the tail end of the second air hole section extends into the cavity of the control end casing 1.

[0034] The air cooling structure connects the inner cavity of the compression end volute 2 and the inner cavity of the control end housing 1. The air cooling structure includes an axial air cooling channel and a radial air cooling channel, wherein the radial air cooling channel is opened at the tail end of the second housing module 4. The radial air cooling channel connects the tail end of the air cooling channel, and at the same time connects the outer side of the rotating shaft and the inner cavity between the second housing module 4 and the control end housing 1.

[0035] In order to use the compressed gas in the compression end volute 2 as a low-temperature gas source for air cooling, the front end of the first air hole section 13 extends to the front end face of the first shell module 3 and is connected with the inner cavity of the compression end volute 2; the first air hole section 13 and the second air hole section are connected with the help of the air vents opened on the waterproof sealing gasket 7, and are connected with the radial air cooling channel at the tail end of the second air hole section, so as to realize the delivery of cooling gas to the tail end of the rotating shaft and the inner cavity of the control end shell 1.

[0036] At the same time, the split air compressor housing also includes a water cooling structure, which includes a first water cooling hole and a first water channel structure 8 located on the first housing module 3, and a second water cooling hole and a second water channel structure located on the second housing module 4; the first water channel structure 8 and the second water channel structure are connected by means of a through hole on the waterproof sealing gasket 7 to form a water cooling channel, and the two ends of the water cooling channel are respectively connected to the first water cooling hole and the second water cooling hole; the axial projection of the water cooling channel is spaced apart from the air cooling channel.

[0037] A first water-cooling hole and a first water channel structure 8 are cast in the first housing module 3, and a connection port for the first water channel structure 8 is reserved on the rear end face of the first housing module 3. A second water-cooling hole and a second water channel structure are cast in the second housing module 4, and a connection port for the second water channel structure is reserved on the front end face of the second housing module 4.

[0038] The connection port of the first water channel structure 8 and the connection port of the second water channel structure are coaxially arranged and connected via a through hole, forming a complete water cooling channel. The water cooling channel connects the first water cooling hole and the second water cooling hole. During use, cooling water enters the water cooling channel through the second water cooling hole or the first water cooling hole and exits through the other water cooling hole after passing through the water cooling channel.

[0039] Due to the provision of the air-cooling channel, the first water channel structure 8 and the second water channel structure need to avoid the air-cooling channel.

[0040] Specifically, the first water channel structure 8 is a Z-shaped structure; the second water channel structure comprises a first annular water channel 9 and a second annular water channel 10, spaced apart along the axial direction. The first annular water channel 9 comprises two symmetrical arcuate water channels, while the second annular water channel 10 is an annular water channel structure with a gap, forming the inlet and outlet of the second annular water channel 10. One end of the first arcuate water channel communicates with the through hole, and the other end communicates with the inlet of the second annular water channel 10; the outlet of the second annular water channel 10 communicates with the inlet of the second arcuate water channel, and the outlet of the second arcuate water channel communicates with the second water-cooling hole.

[0041] During casting, a sealing ring may be provided on the back side of the second housing module 4 , and the sealing ring is connected to the second housing module 4 for sealing the second annular water channel 10 .

[0042] There is an angle between the axial projections of the first water-cooling hole and the second water-cooling hole; the outer ends of the first water-cooling hole and the second water-cooling hole are both connected to a water-cooling pipe joint 5, and the water-cooling pipe joint 5 is connected to the first shell module 3 / second shell module 4 by means of a water-cooling pressure plate 6.

[0043] To accommodate the water cooling channel, the projections of the first water cooling hole and the second water cooling hole along the axial direction toward one end are at an angle. The projection of the air cooling channel along the axial direction is located between the first water cooling hole and the second water cooling hole.

[0044] During installation, the water-cooling pressure plate 6 is sleeved on the outside of the water-cooling pipe joint 5, and the water-cooling pressure plate 6 is bolted to the first shell module 3 / second shell module 4 to fix the water-cooling pipe joint 5 in the first water-cooling hole / second water-cooling hole.

[0045] The setting of the water cooling channel facilitates the later casting of the water channel structure and shell module as well as the steel mold opening to save costs.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Split type air compressor housing, characterized in that: The invention comprises a pressure end volute (2), a main housing and a control end housing (1); the main housing comprises a first housing module (3), a waterproof sealing gasket (7) and a second housing module (4) arranged in sequence along the axial direction; the rear end of the first housing module (3) and the front end of the second housing module (4) are fixed by means of bolts; the outer periphery of the rear end of the first housing module (3) is provided with a folding structure (12); the inner side of the folding structure (12) is provided with an annular limiting groove; the front end of the second housing module (4) extends into the limiting groove and presses the waterproof sealing gasket (7) against the bottom of the limiting groove.

2. The split air compressor housing according to claim 1, characterized in that: The front end of the second housing module (4) is provided with a clearance notch on its circumference for adapting to the folding structure (12); the folding structure (12) is sleeved on the outside of the clearance notch and abuts against the rear end surface of the clearance notch.

3. The split type air compressor housing according to claim 2, characterized in that: The folding structure (12) is evenly distributed around its circumference with a plurality of first connecting portions protruding outward, and the front end of the second shell module (4) is provided with a plurality of second connecting portions protruding outward, the second connecting portions are located at the rear side of the clearance notch, the plurality of first connecting portions and the plurality of second connecting portions are in one-to-one contact with each other, and through bolt holes are provided on both the first connecting portions and the second connecting portions.

4. The split air compressor housing according to claim 3, wherein: A connecting ring (14) protruding outward is further provided in the middle of the second housing module (4); the connecting ring (14) abuts against the front connecting surface of the control end housing (1) and is fixed by means of bolts.

5. The split type air compressor housing according to claim 4, characterized in that: The connecting ring (14) is attached to the rear side of the second connecting portion.

6. The split type air compressor housing according to claim 1, characterized in that: The front end of the first housing module (3) has a mounting ring (11) protruding outward, and the mounting ring (11) abuts against the mounting surface of the compression end volute (2) and is fixed by means of bolts.

7. The split type air compressor housing according to claim 1, characterized in that: It also includes an air cooling structure, which includes a first air hole section (13) located in the first housing module (3) and a second air hole section located in the second housing module (4), the first air hole section (13) and the second air hole section are connected to form an air cooling channel by means of a vent hole provided on the waterproof sealing gasket (7); the front end of the first air hole section (13) is used to connect to the inner cavity of the pressure end volute (2), and the rear end of the second air hole section extends into the cavity of the control end housing (1).

8. The split type air compressor housing according to claim 7, characterized in that: It also includes a water cooling structure, which includes a first water cooling hole and a first water channel structure (8) located on the first shell module (3), and a second water cooling hole and a second water channel structure located on the second shell module (4); the first water channel structure (8) and the second water channel structure are connected by means of a through hole on the waterproof sealing gasket (7) to form a water cooling channel, and the two ends of the water cooling channel are respectively connected to the first water cooling hole and the second water cooling hole; the axial projection of the water cooling channel is spaced apart from the air cooling channel.

9. The split type air compressor housing according to claim 8, characterized in that: There is an angle between the axial projections of the first water-cooling hole and the second water-cooling hole; the outer ends of the first water-cooling hole and the second water-cooling hole are both connected to a water-cooling pipe joint (5), and the water-cooling pipe joint (5) is connected to the first shell module (3) / the second shell module (4) by means of a water-cooling pressure plate (6).

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