A mine energy-saving magnetic levitation air compressor

Abstract

The present invention discloses a mine energy-saving magnetic levitation air compressor, which includes a housing, a liquid cooling component and a filtering mechanism. The air compressor is cooled by a combination of liquid cooling and air cooling, so that the air compressor can always maintain a good and stable operating state in harsh environments such as mines. And blades are arranged in the liquid cooling component, so that when the coolant enters the water inlet cavity, the liquid cooling component can rotate under the action of the blades and the impact force of the cooling water. Furthermore, the liquid cooling component can form an annular cooling plate with a uniform temperature distribution, further improving the cooling efficiency of the liquid cooling component. In addition, the air inlet channel is set as an L-shaped channel covering the rotating groove, so that the external air can be cooled by the liquid cooling component before entering the housing, further improving the air cooling efficiency. Additionally, a filtering mechanism is provided to effectively filter the dust in the air, thereby preventing the dust from affecting the normal operation of the air compressor.

Description

Technical Field

[0001] The present invention relates to the technical field of air compressors, and in particular to a mine - used energy - saving magnetic levitation air compressor. Background Technique

[0002] The mine - used energy - saving magnetic levitation air compressor is a highly efficient and energy - saving compressed air device designed for industrial fields such as mining. It uses magnetic levitation bearing technology, enabling the rotor to rotate while suspended in a magnetic field without physical contact, thus having almost no frictional losses and significantly improving the energy utilization efficiency.

[0003] However, magnetic levitation bearings are sensitive to foreign objects. Especially in the dusty environment of mines, dust intrusion may cause the magnetic levitation gap to get out of control or the sensor to fail. Most existing air compressors use air - cooling methods to cool the compressor. Therefore, the stability of the compressor in the mine environment is relatively low. And due to the relatively low air circulation in the mine itself, the air temperature will gradually rise during the air - cooling process, which in turn causes the temperature of the compressor to gradually increase. In a high - temperature environment, the permanent magnet will demagnetize, leading to a permanent decrease in the motor efficiency.

[0004] Therefore, it is necessary to provide a mine - used energy - saving magnetic levitation air compressor to solve the problems raised in the above background technique. Summary of the Invention

[0005] To achieve the above object, the present invention provides the following technical solution: A mine - used energy - saving magnetic levitation air compressor, including a housing, a first cover plate, a second cover plate, a liquid - cooling component, a volute, a rotating shaft, a first impeller, and a second impeller. Among them, the first cover plate and the second cover plate are respectively fixedly arranged on the front and rear sides of the housing. There are two radial magnetic bearings and one axial magnetic bearing arranged in the housing. The rotating shaft is rotatably arranged in the housing through the radial magnetic bearings and the axial magnetic bearing. The volute is fixedly arranged at the front end of the housing. The first impeller is rotatably arranged in the volute. A thrust disk is arranged at the rear end of the housing. The second impeller is rotatably arranged on the thrust disk. Both the first impeller and the second impeller are in transmission connection with the rotating shaft. An annular rotating groove is opened in the housing, and the liquid - cooling component is rotatably arranged in the rotating groove.

[0006] Preferably, a cooling cavity is opened in the housing. A stator and a rotor are arranged in the cooling cavity. The rotor is in transmission connection with the rotating shaft. An L - shaped annular air inlet groove is opened on the housing. A filtering mechanism is rotatably arranged in the air inlet groove. A plurality of air inlet channels are circumferentially opened in the housing. The air inlet channels communicate the cooling cavity with the air inlet groove. The air inlet channels are L - shaped, and one L - side of it just covers the rotating groove.

[0007] Preferably, the liquid cooling component includes an annular plate, blade plates, a spacer plate, an L-shaped plate one, and an L-shaped plate two. Among them, the annular plate is rotatably arranged in the rotating groove. A plurality of blade plates are fixedly arranged at the inner side of the annular plate in a circumferential and uniform manner. The output end of the blade plate is attached to the rotating groove. An annular spacer plate is fixedly arranged at one end of the blade plate. The spacer plate rotates in a sealed manner along the rotating groove. An L-shaped plate one is fixedly arranged on the spacer plate. An L-shaped plate two is fixedly arranged at the other end of the blade plate.

[0008] Preferably, a plurality of through holes are formed in the spacer plate in a circumferential and uniform manner;

[0009] The plurality of blade plates divide the rotating groove into a plurality of cooling channels. An inlet water chamber is formed between the L-shaped plate one and the rotating groove. An outlet water chamber is formed between the L-shaped plate two and the rotating groove. The outlet water chamber is communicated with the cooling channels. The through holes communicate the inlet water chamber with the cooling channels.

[0010] Preferably, a plurality of blades are fixedly arranged on the L-shaped plate one in a circumferential manner. The housing is provided with an inlet water hole and an outlet water hole in the vertical direction. The inlet water hole is located in the tangential direction of the inlet water chamber. The outlet water hole is located at the top of the outlet water chamber. Both the outlet water hole and the inlet water hole are communicated with an external liquid cooling circulation mechanism through water pipes.

[0011] Preferably, the filtering mechanism includes an inner ring, an outer ring, a side plate one, a side plate two, and a filter screen. Among them, both the inner ring and the outer ring are rotatably arranged in the air inlet groove and are respectively attached to both sides of the air inlet groove. An annular side plate one is fixedly arranged on the inner ring. An annular side plate two is fixedly arranged on the outer ring. The outer sides of the side plate one and the side plate two are both attached to the outer side surface of the housing. The filter screen is fixedly arranged between the side plate one and the side plate two. A plurality of air guiding plates are fixedly arranged between the inner ring and the outer ring in a circumferential and inclined manner.

[0012] Preferably, a cleaning brush is slidably arranged on the housing through hydraulic drive. A collection box is detachably arranged at the bottom of the cleaning brush. The cleaning brush can be attached to the filter screen.

[0013] Preferably, an air outlet chamber is formed between the thrust disc and the housing. A plurality of air outlet channels are formed in the housing in a circumferential manner. The air outlet channels communicate the cooling chamber with the air outlet chamber. A plurality of air outlet holes are formed in the thrust disc;

[0014] An air outlet is formed in the cover plate two. A negative pressure chamber is formed between the cover plate two and the thrust disc. The air outlet holes communicate the air outlet chamber with the negative pressure chamber.

[0015] Compared with the prior art, the present invention provides a mine-used energy-saving magnetic levitation air compressor, which has the following beneficial effects:

[0016] In the present invention, the air compressor is cooled by a combination of liquid cooling and air cooling, so that the air compressor can maintain a good heat dissipation effect in harsh environments such as mines, and further enables the air compressor to always maintain a good and stable operating state. Moreover, blades are provided in the liquid cooling component so that when the coolant is introduced into the water inlet cavity, the liquid cooling component can rotate under the action of the blades and the impact force of the cooling water. Thus, the liquid cooling component can form an annular cooling plate with a uniform temperature distribution, further improving the cooling efficiency of the liquid cooling component. In addition, the air inlet channel is set as an L-shaped channel covering the rotating groove, so that the external air can be cooled by the liquid cooling component before entering the housing, further improving the air cooling efficiency. Additionally, a filtering mechanism is provided to effectively filter the dust in the air, thereby preventing the dust from affecting the normal operation of the air compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 is a schematic side view of the overall structure of the present invention;

[0019] Figure 3 is a schematic diagram of the structure of the housing in the present invention;

[0020] Figure 4 is a schematic diagram of the structure of the liquid cooling component in the present invention;

[0021] Figure 5 is Figure 4 an enlarged schematic diagram of the structure of part A in

[0022] Figure 6 is a schematic diagram of the structure of the filtering mechanism in the present invention;

[0023] In the figure: 1, housing; 11, radial magnetic bearing; 12, axial magnetic bearing; 13, thrust disc; 131, air outlet hole; 14, rotating groove; 141, cooling channel; 142, water inlet cavity; 143, water outlet cavity; 15, stator; 16, rotor; 17, air inlet groove; 18, air inlet channel; 19, air outlet channel; 2, cover plate one; 3, cover plate two; 4, liquid cooling component; 41, ring plate; 42, blade plate; 43, spacer plate; 431, through hole; 44, L plate one; 441, blade; 45, L plate two; 5, volute; 6, rotating shaft; 7, impeller one; 8, impeller two; 9, filtering mechanism; 91, inner ring; 92, outer ring; 93, side plate one; 94, side plate two; 95, filter net; 96, air guiding plate; 97, cleaning brush; 98, collection box. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Please refer to Figures 1 to 6, in the embodiments of the present invention, a mine - used energy - saving magnetic - levitation air compressor includes a housing 1, a first cover plate 2, a second cover plate 3, a liquid - cooling component 4, a volute 5, a rotating shaft 6, a first impeller 7, and a second impeller 8. Among them, the first cover plate 2 and the second cover plate 3 are respectively fixedly arranged on the front and rear sides of the housing 1. Two radial magnetic bearings 11 and one axial magnetic bearing 12 are arranged in the housing 1. The rotating shaft 6 is rotatably arranged in the housing 1 through the radial magnetic bearings 11 and the axial magnetic bearing 12. The volute 5 is fixedly arranged at the front end of the housing 1. The first impeller 7 is rotatably arranged in the volute 5. A thrust disc 13 is arranged at the rear end of the housing 1. The second impeller 8 is rotatably arranged on the thrust disc 13. Both the first impeller 7 and the second impeller 8 are in transmission connection with the rotating shaft 6. An annular rotating groove 14 is formed in the housing 1, and the liquid - cooling component 4 is rotatably arranged in the rotating groove 14;

[0025] A cooling cavity is formed in the housing 1. A stator 15 and a rotor 16 are arranged in the cooling cavity. The rotor 16 is in transmission connection with the rotating shaft 6. An L - shaped annular air - inlet groove 17 is formed in the housing 1. A filtering mechanism 9 is rotatably arranged in the air - inlet groove 17. A plurality of air - inlet channels 18 are formed in a circular pattern in the housing 1. The air - inlet channels 18 communicate the cooling cavity with the air - inlet groove 17. The air - inlet channels 18 are L - shaped, and one L - side of it just covers the rotating groove 14;

[0026] The liquid - cooling component 4 includes an annular plate 41, blade plates 42, spacer plates 43, a first L - shaped plate 44, and a second L - shaped plate 45. Among them, the annular plate 41 is rotatably arranged in the rotating groove 14. A plurality of blade plates 42 are evenly and fixedly arranged in a circular pattern on the inner side of the annular plate 41. The output end of the blade plate 42 fits with the rotating groove 14. An annular spacer plate 43 is fixedly arranged at one end of the blade plate 42. The spacer plate 43 rotates in a sealed manner along the rotating groove 14. The first L - shaped plate 44 is fixedly arranged on the spacer plate 43. The second L - shaped plate 45 is fixedly arranged at the other end of the blade plate 42;

[0027] A plurality of through - holes 431 are evenly formed in a circular pattern on the spacer plate 43;

[0028] A plurality of the blade plates 42 divide the rotating groove 14 into a plurality of cooling channels 141. An inlet water cavity 142 is formed between the first L - shaped plate 44 and the rotating groove 14. An outlet water cavity 143 is formed between the second L - shaped plate 45 and the rotating groove 14. The outlet water cavity 143 communicates with the cooling channels 141. The through - holes 431 communicate the inlet water cavity 142 with the cooling channels 141;

[0029] A plurality of blades 441 are fixedly arranged in a circumferential manner on the L-shaped plate 44. The housing 1 is provided with a water inlet hole and a water outlet hole in the vertical direction. The water inlet hole is located in the tangential direction of the water inlet cavity 142, and the water outlet hole is located at the top of the water outlet cavity 143. Both the water outlet hole and the water inlet hole are communicated with an external liquid cooling circulation mechanism through a water delivery pipe.

[0030] The filtering mechanism 9 includes an inner ring 91, an outer ring 92, a first side plate 93, a second side plate 94, and a filter net 95. Among them, the inner ring 91 and the outer ring 92 are both rotatably arranged in the air inlet groove 17 and respectively fit on both sides of the air inlet groove 17. A ring-shaped first side plate 93 is fixedly arranged on the inner ring 91, and a ring-shaped second side plate 94 is fixedly arranged on the outer ring 92. The outer sides of the first side plate 93 and the second side plate 94 are both in contact with the outer side surface of the housing 1. The filter net 95 is fixedly arranged between the first side plate 93 and the second side plate 94, and a plurality of air guiding plates 96 are fixedly arranged in a circumferential and inclined manner between the inner ring 91 and the outer ring 92.

[0031] An air outlet cavity is formed between the thrust disc 13 and the housing 1. A plurality of air outlet channels 19 are circumferentially formed on the housing 1. The air outlet channels 19 communicate the cooling cavity with the air outlet cavity. A plurality of air outlet holes 131 are formed in the thrust disc 13.

[0032] An air outlet is formed in the second cover plate 3. A negative pressure cavity is formed between the second cover plate 3 and the thrust disc 13. The air outlet holes 131 communicate the air outlet cavity with the negative pressure cavity.

[0033] During implementation, a liquid cooling circulation mechanism is used to input cooling water into the water inlet hole. Since the position of the water inlet hole is in the tangential direction of the water inlet cavity 142, the cooling water will wash the blades 441, causing the blades 441 to drive the liquid cooling component 4 to rotate. Subsequently, when the water inlet cavity 142 is filled with cooling water, the cooling water will flow into the cooling channel 141 through the through hole 431. At this time, the cooling water contacts the housing 1 and cools the housing 1 and the stator 15. Then, the cooling water flows into the water outlet cavity 143 and returns to the liquid cooling circulation mechanism through the water outlet hole. During this process, since the liquid cooling component 4 continuously rotates during the input of the cooling water, the liquid cooling component 4 can be regarded as an entire annular cooling plate. That is, this annular cooling plate can uniformly and efficiently cool the housing 1. In addition, during the rotation of the liquid cooling component 4, the positions of the plurality of cooling channels 141 and the through holes 431 also change, so that the pressure in the water inlet cavity 142 can be evenly dispersed to each through hole 431, ensuring that the cooling water can effectively flow through the plurality of cooling channels 141 without being affected by the rotation of the liquid cooling component 4. During the rotation of the rotating shaft 6, the first impeller 7 will rotate accordingly and compress the air. At the same time, the second impeller 8 will also rotate accordingly. However, when the second impeller 8 rotates, it can draw the inside of the housing 1 to a negative pressure state. At this time, external air can be sucked into the cooling cavity through the air inlet groove 17 and the air inlet channel 18. Subsequently, the air entering the cooling cavity can pass through the gaps between the rotor 16 and the stator 15 and between the stator 15 and the housing 1, thereby cooling the stator 15 and the rotor 16. Then, a part of the cooling air is discharged from the air outlet channel 19, and another part of the cooling air passes through the gap between the radial magnetic bearing 11 and the axial magnetic bearing 12 to further cool the radial magnetic bearing 11 and the axial magnetic bearing 12. Subsequently, the cooling air is further attracted to the negative pressure cavity and discharged from the air outlet on the second cover plate 3, thus forming an air cooling circulation. When the air enters the air inlet groove 17, the air will first pass through the filtering mechanism 9, and the dust in the air is filtered by the filter screen 95 in the filtering mechanism 9, preventing dust from entering the compressor and affecting the efficiency of the compressor. In addition, after the air enters the air inlet channel 18, it will first flow along the coverage range of the rotating groove 14, that is, the liquid cooling component 4 can cool the air, so that the air entering the housing 1 is cooled air that has been cooled. Therefore, in a mine environment with poor air circulation, the air cooling efficiency will not be affected by the increase in air temperature, ensuring that the air compressor can always maintain a good and stable operating state in a harsh environment.

[0034] In this embodiment, as Figure 1 and Figure 3, a cleaning brush 97 is slidably arranged on the outer shell 1 through hydraulic drive, a collection box 98 is detachably arranged at the bottom of the cleaning brush 97, and the cleaning brush 97 can be attached to the filter screen 95.

[0035] Specifically, when the external air enters from the air inlet groove 17, it will first pass through the air guide plate 96 and then enter the air inlet passage 18. During this process, the entering air will push the air guide plate 96 to rotate and drive the entire filtering mechanism 9 to rotate, that is, the filter screen 95 will rotate along the outer side surface of the outer shell 1. At this time, the cleaning brush 97 is hydraulically controlled to regularly clean the filter screen 95 to prevent the filter screen 95 from being blocked during a long-term filtering process, and the dust cleaned down can be collected by the collection box 98, and only the dust in the collection box 98 needs to be regularly cleaned.

[0036] In summary, when the present invention is implemented, the air compressor is cooled by a combination of liquid cooling and air cooling, so that the air compressor can maintain a good heat dissipation effect in harsh environments such as mines, and further enables the air compressor to always maintain a good and stable operating state. Moreover, blades 441 are provided in the liquid cooling component 4, so that when the coolant is introduced into the water inlet cavity 142, the liquid cooling component 4 can rotate under the action of the blades 142 and the impact force of the cooling water, and further enables the liquid cooling component 4 to form an annular cooling plate with a uniform temperature distribution, further improving the cooling efficiency of the liquid cooling component 4. In addition, the air inlet passage 18 is set as an L-shaped passage covering the rotating groove 14, so that the external air can be cooled by the liquid cooling component 4 before entering the outer shell 1, further improving the air cooling efficiency. In addition, a filtering mechanism 9 is provided to effectively filter the dust in the air, and further prevent the dust from affecting the normal operation of the air compressor.

[0037] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent replacements or changes, and should be covered within the protection scope of the present invention.

Claims

1. A mine energy-saving magnetic levitation air compressor, characterized in that: It includes a housing (1), a first cover plate (2), a second cover plate (3), a liquid cooling component (4), a volute (5), a rotating shaft (6), a first impeller (7) and a second impeller (8). The first cover plate (2) and the second cover plate (3) are respectively fixedly arranged on the front and rear sides of the housing (1). Two radial magnetic bearings (11) and an axial magnetic bearing (12) are arranged in the housing (1). The rotating shaft (6) is rotatably arranged in the housing (1) through the radial magnetic bearings (11) and the axial magnetic bearing (12). A volute (5) is fixedly arranged at the front end of the housing (1). A first impeller (7) is rotatably arranged in the volute (5). A thrust disc (13) is arranged at the rear end of the housing (1). A second impeller (8) is rotatably arranged on the thrust disc (13). Both the first impeller (7) and the second impeller (8) are in transmission connection with the rotating shaft (6). An annular rotating groove (14) is formed in the housing (1), and the liquid cooling component (4) is rotatably arranged in the rotating groove (14); A cooling cavity is formed in the housing (1). A stator (15) and a rotor (16) are arranged in the cooling cavity. The rotor (16) is in transmission connection with the rotating shaft (6). An L-shaped annular air inlet groove (17) is formed in the housing (1). A filtering mechanism (9) is rotatably arranged in the air inlet groove (17). A plurality of air inlet channels (18) are formed in a circumferential shape in the housing (1). The air inlet channels (18) communicate the cooling cavity with the air inlet groove (17). The air inlet channels (18) are L-shaped, and one L side thereof just covers the rotating groove (14); The liquid cooling component (4) includes an annular plate (41), blade plates (42), a spacer plate (43), a first L-shaped plate (44) and a second L-shaped plate (45). The annular plate (41) is rotatably arranged in the rotating groove (14). A plurality of blade plates (42) are uniformly and fixedly arranged in a circumferential shape on the inner side of the annular plate (41). The output end of the blade plate (42) is attached to the rotating groove (14). An annular spacer plate (43) is fixedly arranged at one end of the blade plate (42). The spacer plate (43) rotates in a sealed manner along the rotating groove (14). The first L-shaped plate (44) is fixedly arranged on the spacer plate (43). The second L-shaped plate (45) is fixedly arranged at the other end of the blade plate (42); A plurality of through holes (431) are uniformly formed in a circumferential shape on the spacer plate (43). The plurality of blade plates (42) divide the rotating groove (14) into a plurality of cooling channels (141). An inlet water cavity (142) is formed between the first L-shaped plate (44) and the rotating groove (14). An outlet water cavity (143) is formed between the second L-shaped plate (45) and the rotating groove (14). The outlet water cavity (143) communicates with the cooling channels (141). The through holes (431) communicate the inlet water cavity (142) with the cooling channels (141); A plurality of blades (441) are fixedly arranged in a circumferential shape on the first L-shaped plate (44). An inlet water hole and an outlet water hole are formed in the housing (1) in the vertical direction. The inlet water hole is located in the tangential direction of the inlet water cavity (142). The outlet water hole is located at the top of the outlet water cavity (143). Both the outlet water hole and the inlet water hole are communicated with an external liquid cooling circulation mechanism through water pipes; The filtering mechanism (9) includes an inner ring (91), an outer ring (92), a first side plate (93), a second side plate (94) and a filter net (95). The inner ring (91) and the outer ring (92) are both rotatably arranged in the air inlet groove (17) and respectively fit on both sides of the air inlet groove (17). A circular first side plate (93) is fixedly arranged on the inner ring (91), and a circular second side plate (94) is fixedly arranged on the outer ring (92). The outer sides of the first side plate (93) and the second side plate (94) are both in contact with the outer side surface of the housing (1). The filter net (95) is fixedly arranged between the first side plate (93) and the second side plate (94). A plurality of air guiding plates (96) are fixedly arranged between the inner ring (91) and the outer ring (92) in a circumferential and inclined manner.

2. The energy-saving magnetic levitation air compressor for mining according to claim 1, wherein: A cleaning brush (97) is slidably arranged on the housing (1) through hydraulic drive. A collection box (98) is detachably arranged at the bottom of the cleaning brush (97). The cleaning brush (97) can be attached to the filter net (95).

3. The energy-saving magnetic levitation air compressor for mining according to claim 1, wherein: An air outlet cavity is formed between the thrust disc (13) and the housing (1). A plurality of air outlet channels (19) are circumferentially formed on the housing (1). The air outlet channels (19) communicate the cooling cavity with the air outlet cavity. A plurality of air outlet holes (131) are formed in the thrust disc (13); An air outlet is formed on the second cover plate (3). A negative pressure cavity is formed between the second cover plate (3) and the thrust disc (13). The air outlet holes (131) communicate the air outlet cavity with the negative pressure cavity.

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