Mining energy-saving magnetic suspension air compressor

Abstract

The invention discloses a mining energy-saving magnetic suspension air compressor which comprises a shell, a liquid cooling assembly and a filtering mechanism, and the air compressor is cooled in a liquid cooling and air cooling combined mode, so that the air compressor can always keep a good and stable operation state in severe environments such as a mine, and the air compressor is high in reliability. Blades are arranged in the liquid cooling assembly, so that the liquid cooling assembly can rotate under the action of impulsive force of the blades and cooling water in the process that the cooling liquid is introduced into the water inlet cavity, then the liquid cooling assembly can form an annular cooling plate with uniform temperature distribution, and the cooling efficiency of the liquid cooling assembly is further improved; in addition, the air inlet channel is arranged to be an L-shaped channel covering the rotating groove, so that external air can be cooled through the liquid cooling assembly before entering the shell, the air cooling efficiency is further improved, in addition, the filtering mechanism is arranged to effectively filter dust in the air, and then the dust is prevented from affecting normal operation of the air compressor.

Description

Technical Field

[0001] The invention relates to the technical field of air compressors, in particular to an energy-saving magnetic suspension air compressor for mining. Background Art

[0002] The energy-saving magnetic levitation air compressor for mining is a high-efficiency and energy-saving compressed air equipment designed specifically for industrial fields such as mining. It uses magnetic levitation bearing technology to allow the rotor to operate suspended in the magnetic field without the need for physical contact, resulting in almost no friction loss, thereby significantly improving energy utilization efficiency.

[0003] However, magnetic bearings are sensitive to foreign matter, especially in dusty environments such as mines. Dust intrusion may cause the magnetic suspension gap to lose control or the sensor to fail. Most existing air compressors use air cooling to cool the compressor, so the stability of the compressor is low in a mine environment. In addition, since the air circulation in the mine itself is low, the air temperature will gradually increase during the air cooling process, which in turn will cause the temperature of the compressor to gradually increase. In a high temperature environment, the permanent magnet will demagnetize, causing the motor efficiency to permanently decrease.

[0004] Therefore, it is necessary to provide an energy-saving magnetic suspension air compressor for mining to solve the problems raised in the above background technology. Summary of the invention

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an energy-saving magnetic levitation air compressor for mining, comprising an outer shell, a cover plate 1, a cover plate 2, a liquid cooling component, a volute, a rotating shaft, an impeller 1 and an impeller 2, wherein the cover plate 1 and the cover plate 2 are fixedly arranged on the front and rear sides of the outer shell respectively, two radial magnetic bearings and an axial magnetic bearing are arranged in the outer shell, the rotating shaft is rotatably arranged in the outer shell through the radial magnetic bearings and the axial magnetic bearing, a volute is fixedly arranged at the front end of the outer shell, an impeller 1 is rotatably arranged in the volute, a thrust plate is arranged at the rear end of the outer shell, an impeller 2 is rotatably arranged on the thrust plate, the impeller 1 and the impeller 2 are both transmission-connected to the rotating shaft, an annular rotating groove is provided in the outer shell, and a liquid cooling component is rotatably arranged in the rotating groove.

[0006] Preferably, a cooling chamber is provided in the shell, a stator and a rotor are arranged in the cooling chamber, the rotor is drivingly connected to the rotating shaft, an L-shaped annular air inlet groove is provided on the shell, a filter mechanism is rotatably arranged in the air inlet groove, a plurality of air inlet channels are circumferentially provided in the shell, the air inlet channels connect the cooling chamber with the air inlet groove, the air inlet channel is L-shaped, and one of the L sides just covers the rotating groove.

[0007] Preferably, the liquid cooling component includes a ring plate, a blade plate, a spacer plate, L-plate 1 and L-plate 2, wherein the ring plate is rotatably arranged in the rotating groove, a plurality of blade plates are evenly and fixedly arranged on the inner side of the ring plate in a circular shape, the output end of the blade plate is in contact with the rotating groove, a ring-shaped spacer plate is fixedly arranged at one end of the blade plate, the spacer plate rotates along the rotating groove in a sealed manner, L-plate 1 is fixedly arranged on the spacer plate, and L-plate 2 is fixedly arranged at the other end of the blade plate.

[0008] Preferably, the partition plate is provided with a plurality of through holes evenly arranged in a circumference;

[0009] The plurality of blades separate the rotating grooves to form a plurality of cooling channels, a water inlet cavity is formed between the L plate 1 and the rotating groove, a water outlet cavity is formed between the L plate 2 and the rotating groove, the water outlet cavity is connected to the cooling channel, and the through hole connects the water inlet cavity to the cooling channel.

[0010] Preferably, a plurality of blades are fixedly arranged in a circle on the L-plate, and a water inlet hole and a water outlet hole are opened in the vertical direction of the shell, and the water inlet hole is located in the tangent direction of the water inlet cavity, and the water outlet hole is located at the top of the water outlet cavity, and the water outlet hole and the water inlet hole are connected to the external liquid cooling circulation mechanism through a water pipe.

[0011] Preferably, the filtering mechanism includes an inner ring, an outer ring, side plate one, side plate two and a filter net, wherein the inner ring and the outer ring are both rotatably arranged in the air inlet slot and respectively fit on both sides of the air inlet slot, the inner ring is fixedly provided with a ring-shaped side plate one, the outer ring is fixedly provided with a ring-shaped side plate two, the outer sides of side plate one and side plate two are both fitted with the outer side surface of the outer shell, the filter net is fixedly arranged between side plate one and side plate two, and a plurality of air guide plates are fixedly arranged at a circular inclination between the inner ring and the outer ring.

[0012] Preferably, a cleaning brush is provided on the housing in a sliding manner driven by hydraulic pressure, a collecting box is detachably provided on the bottom of the cleaning brush, and the cleaning brush can be attached to the filter net.

[0013] Preferably, an air outlet cavity is formed between the thrust plate and the shell, a plurality of air outlet channels are circumferentially provided on the shell, the air outlet channels connect the cooling cavity with the air outlet cavity, and a plurality of air outlet holes are provided on the thrust plate;

[0014] An air outlet is provided on the second cover plate, a negative pressure cavity is formed between the second cover plate and the thrust plate, and the air outlet hole connects the air outlet cavity with the negative pressure cavity.

[0015] Compared with the prior art, the present invention provides an energy-saving magnetic suspension air compressor for mining, which has the following beneficial effects:

[0016] In the present invention, the air compressor is cooled by combining liquid cooling with air cooling, so that the air compressor can maintain a good heat dissipation effect in harsh environments such as mines, thereby allowing the air compressor to always maintain a good and stable operating state, and blades are arranged in the liquid cooling component so that when the coolant passes into the water inlet chamber, the liquid cooling component can rotate under the impact of the blades and the cooling water, so that the liquid cooling component can form an annular cooling plate with uniform temperature distribution, thereby further improving the cooling efficiency of the liquid cooling component, in addition, the air inlet channel is arranged 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 outer casing, thereby further improving the air cooling efficiency, and a filtering mechanism is arranged to effectively filter dust in the air, thereby preventing dust from affecting the normal operation of the air compressor. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

[0021] Figure 5 for Figure 4 A schematic diagram of the enlarged structure of the middle part A;

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

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

[0024] See also Figure 1 to Figure 6In an embodiment of the present invention, a mining energy-saving magnetic levitation air compressor comprises a shell 1, a cover plate 1 2, a cover plate 2 3, a liquid cooling component 4, a volute 5, a rotating shaft 6, an impeller 1 7 and an impeller 2 8, wherein the cover plate 1 2 and the cover plate 2 3 are respectively fixedly arranged on the front and rear sides of the shell 1, two radial magnetic bearings 11 and an axial magnetic bearing 12 are arranged in the shell 1, the rotating shaft 6 is rotatably arranged in the shell 1 through the radial magnetic bearings 11 and the axial magnetic bearings 12, the front end of the shell 1 is fixedly provided with a volute 5, the impeller 1 7 is rotatably arranged in the volute 5, the rear end of the shell 1 is provided with a thrust plate 13, the impeller 2 8 is rotatably arranged on the thrust plate 13, the impeller 1 7 and the impeller 2 8 are both transmission-connected with the rotating shaft 6, an annular rotating groove 14 is provided in the shell 1, and the liquid cooling component 4 is rotatably arranged in the rotating groove 14;

[0025] The housing 1 is provided with a cooling chamber, in which a stator 15 and a rotor 16 are arranged, and the rotor 16 is in transmission connection with the rotating shaft 6. The housing 1 is provided with an L-shaped annular air inlet groove 17, in which a filter mechanism 9 is rotatably arranged, and the housing 1 is provided with a plurality of air inlet channels 18 in a circumferential manner, and the air inlet channels 18 connect the cooling chamber with the air inlet groove 17, and the air inlet channel 18 is L-shaped, and one L side thereof just covers the rotating groove 14;

[0026] The liquid cooling assembly 4 includes a ring plate 41, a blade plate 42, a spacer plate 43, an L plate 1 44 and an L plate 2 45, wherein the ring plate 41 is rotatably arranged in the rotating groove 14, a plurality of blade plates 42 are evenly and fixedly arranged on the inner side of the ring plate 41 in a circumferential manner, the output end of the blade plate 42 is fitted 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 along the rotating groove 14 in a sealed manner, an L plate 1 44 is fixedly arranged on the spacer plate 43, and an L plate 2 45 is fixedly arranged at the other end of the blade plate 42;

[0027] The partition plate 43 is provided with a plurality of through holes 431 evenly arranged in a circumference;

[0028] The plurality of blades 42 separate the rotating groove 14 to form a plurality of cooling channels 141, a water inlet cavity 142 is formed between the L plate 1 44 and the rotating groove 14, a water outlet cavity 143 is formed between the L plate 2 45 and the rotating groove 14, the water outlet cavity 143 is connected to the cooling channel 141, and the through hole 431 connects the water inlet cavity 142 to the cooling channel 141;

[0029] A plurality of blades 441 are fixedly arranged in a circle on the L-plate 144, and a water inlet hole and a water outlet hole are opened in the vertical direction of the housing 1, and the water inlet hole is located in the tangent direction of the water inlet cavity 142, and the water outlet hole is located at the top of the water outlet cavity 143, and the water outlet hole and the water inlet hole are connected to the external liquid cooling circulation mechanism through a water pipe;

[0030] The filtering mechanism 9 comprises an inner ring 91, an outer ring 92, a side plate 1 93, a side plate 2 94 and a filter screen 95, wherein the inner ring 91 and the outer ring 92 are both rotatably arranged in the air inlet slot 17 and respectively fit the two sides of the air inlet slot 17, the inner ring 91 is fixedly provided with a ring-shaped side plate 1 93, the outer ring 92 is fixedly provided with a ring-shaped side plate 2 94, the outer sides of the side plates 1 93 and 2 94 are both fitted with the outer side surface of the housing 1, the filter screen 95 is fixedly arranged between the side plates 1 93 and 2 94, and a plurality of air guide plates 96 are fixedly arranged in a circumferentially inclined manner between the inner ring 91 and the outer ring 92;

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

[0032] An air outlet is provided on the cover plate 2 3 , a negative pressure cavity is formed between the cover plate 2 3 and the thrust plate 13 , and the air outlet hole 131 connects the air outlet cavity with the negative pressure cavity.

[0033] During implementation, cooling water is input into the water inlet hole by using a liquid cooling circulation mechanism. Since the water inlet hole is located in the tangential direction of the water inlet chamber 142, the cooling water will flush the blades 441, so that the blades 441 drive the liquid cooling component 4 to rotate. Then, when the water inlet chamber 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 shell 1 and cools the shell 1 and the stator 15. Then, the cooling water flows into the water outlet chamber 143 and returns to the liquid cooling circulation mechanism through the water outlet hole. In this process, since the liquid cooling component 4 is continuously cooled during the cooling water input process The liquid cooling assembly 4 rotates, and the liquid cooling assembly 4 can be regarded as a whole annular cooling plate, that is, the annular cooling plate can perform uniform and efficient cooling treatment on the housing 1. In addition, during the rotation of the liquid cooling assembly 4, the positions of the plurality of cooling channels 141 and the through holes 431 will also change, so that the pressure in the water inlet chamber 142 can be evenly dispersed to each through hole 431, thereby 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 assembly 4. During the rotation of the rotating shaft 6, the impeller 1 7 will rotate accordingly and compress the air, and the impeller 2 8 will also rotate accordingly, but the impeller 2 8 will rotate when it rotates. The inside of the shell 1 can be evacuated to a negative pressure state. At this time, the external air can be sucked into the cooling chamber through the air inlet slot 17 and the air inlet channel 18. Then, the air entering the cooling chamber can pass through the gap between the rotor 16 and the stator 15 and the stator 15 and the shell 1, thereby cooling the stator 15 and the rotor 16. Then, part of the cooling air is discharged from the air outlet channel 19, and the other part of the cooling air passes through the gap between the radial magnetic bearing 11 and the axial magnetic bearing 12, further cooling the radial magnetic bearing 11 and the axial magnetic bearing 12. Then, the cooling air is further attracted to the negative pressure chamber and discharged from the air outlet on the cover plate 2 3, thereby forming an air cooling cycle. When the air enters the air inlet slot 17, the air will preferentially pass through the filter mechanism 9, and the dust in the air will be filtered through the filter mesh 95 in the filter mechanism 9, thereby preventing the 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 preferentially flow along the coverage of the rotating slot 14, that is, the air can be cooled by the liquid cooling component 4, so that the air entering the housing 1 is the cooling air that has been cooled, so that in the mine environment with poor air circulation, the air cooling efficiency will not be affected by the increase in air temperature, thereby ensuring that the air compressor can always maintain a good and stable operating state in harsh environments.

[0034] In this embodiment, Figure 1 and Figure 3A cleaning brush 97 is provided on the housing 1 through hydraulic driving and sliding, and a collecting box 98 is detachably provided at the bottom of the cleaning brush 97 , and the cleaning brush 97 can be attached to the filter screen 95 .

[0035] In particular, when external air enters from the air inlet slot 17, it will first pass through the air guide plate 96 and then enter the air inlet channel 18. During this process, the air entering will push the air guide plate 96 to rotate and drive the entire filter mechanism 9 to rotate, that is, the filter screen 95 will rotate along the outer side of the 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 period of filtration, and the cleaned dust can be collected by the collection box 98, and only the dust in the collection box 98 needs to be cleaned regularly.

[0036] To sum up, when the present invention is implemented, the air compressor is cooled by combining liquid cooling with air cooling, so that the air compressor can maintain a good heat dissipation effect in harsh environments such as mines, thereby enabling the air compressor to always maintain a good and stable operating state, and blades 441 are arranged in the liquid cooling component 4 so that when the coolant passes into the water inlet chamber 142, the liquid cooling component 4 can rotate under the action of the blades 142 and the impact of the cooling water, so that the liquid cooling component 4 can form an annular cooling plate with uniform temperature distribution, thereby further improving the cooling efficiency of the liquid cooling component 4, and in addition, the air inlet channel 18 is arranged to be an L-shaped channel covering the rotating groove 14, so that the external air can be cooled through the liquid cooling component 4 before entering the outer casing 1, thereby further improving the air cooling efficiency, and the filtering mechanism 9 is arranged to effectively filter the dust in the air, thereby preventing the dust from affecting the normal operation of the air compressor.

[0037] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An energy-saving magnetic suspension air compressor for mining, characterized in that: The invention comprises a housing (1), a cover plate 1 (2), a cover plate 2 (3), a liquid cooling assembly (4), a volute (5), a rotating shaft (6), an impeller 1 (7) and an impeller 2 (8), wherein the cover plate 1 (2) and the cover plate 2 (3) are respectively fixedly arranged on the front and rear sides of the housing (1), and the housing (1) is provided with two radial magnetic bearings (11) and one axial magnetic bearing (12), and the rotating shaft (6) is rotated by the radial magnetic bearings (11) and the axial magnetic bearings (12). The outer casing (1) is provided with a volute (5) fixedly disposed at the front end of the outer casing (1), and an impeller (7) is rotatably disposed in the volute (5). A thrust plate (13) is disposed at the rear end of the outer casing (1), and an impeller (8) is rotatably disposed on the thrust plate (13). The impeller (7) and the impeller (8) are both transmission-connected to the rotating shaft (6). An annular rotating groove (14) is provided in the outer casing (1), and a liquid cooling component (4) is rotatably disposed in the rotating groove (14).

2. The energy-saving magnetic suspension air compressor for mining according to claim 1 is characterized in that: The housing (1) is provided with a cooling chamber, wherein a stator (15) and a rotor (16) are arranged in the cooling chamber, wherein the rotor (16) is drivingly connected to the rotating shaft (6), wherein an L-shaped annular air inlet groove (17) is provided on the housing (1), wherein a filter mechanism (9) is rotatably arranged in the air inlet groove (17), wherein a plurality of air inlet channels (18) are circumferentially provided in the housing (1), wherein the air inlet channels (18) connect the cooling chamber with the air inlet groove (17), wherein the air inlet channels (18) are L-shaped, and wherein one L side thereof just covers the rotating groove (14).

3. The energy-saving magnetic suspension air compressor for mining according to claim 1 is characterized in that: The liquid cooling component (4) comprises a ring plate (41), a blade plate (42), a spacer plate (43), an L plate one (44) and an L plate two (45), wherein the ring plate (41) is rotatably arranged in the rotating groove (14), a plurality of blade plates (42) are evenly and fixedly arranged on the inner side of the ring plate (41) in a circumferential manner, the output end of the blade plate (42) is in contact with the rotating groove (14), one end of the blade plate (42) is fixedly provided with an annular spacer plate (43), the spacer plate (43) rotates along the rotating groove (14) in a sealed manner, the spacer plate (43) is fixedly provided with an L plate one (44), and the other end of the blade plate (42) is fixedly provided with an L plate two (45).

4. The energy-saving magnetic suspension air compressor for mining according to claim 3 is characterized in that: The partition plate (43) is provided with a plurality of through holes (431) uniformly arranged in a circumference; The plurality of blades (42) separate the rotating groove (14) to form a plurality of cooling channels (141); a water inlet cavity (142) is formed between the L plate 1 (44) and the rotating groove (14); a water outlet cavity (143) is formed between the L plate 2 (45) and the rotating groove (14); the water outlet cavity (143) is connected to the cooling channel (141); and the through hole (431) connects the water inlet cavity (142) and the cooling channel (141).

5. The energy-saving magnetic suspension air compressor for mining according to claim 4 is characterized in that: A plurality of blades (441) are fixedly arranged in a circle on the L-plate (44), and a water inlet hole and a water outlet hole are provided in the vertical direction of the shell (1), wherein the water inlet hole is located in the tangent direction of the water inlet cavity (142), and the water outlet hole is located at the top of the water outlet cavity (143), and the water outlet hole and the water inlet hole are both connected to an external liquid cooling circulation mechanism through a water pipe.

6. The energy-saving magnetic suspension air compressor for mining according to claim 2 is characterized in that: The filtering mechanism (9) comprises an inner ring (91), an outer ring (92), a side plate one (93), a side plate two (94) and a filter net (95), wherein 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), the inner ring (91) is fixedly provided with a ring-shaped side plate one (93), the outer ring (92) is fixedly provided with a ring-shaped side plate two (94), the outer sides of the side plate one (93) and the side plate two (94) are both fitted with the outer side surface of the outer shell (1), the filter net (95) is fixedly arranged between the side plate one (93) and the side plate two (94), and a plurality of air guide plates (96) are fixedly arranged in a circular manner between the inner ring (91) and the outer ring (92).

7. The energy-saving magnetic suspension air compressor for mining according to claim 6 is characterized in that: A cleaning brush (97) is provided on the housing (1) in a sliding manner driven by hydraulic pressure, a collecting box (98) is detachably provided at the bottom of the cleaning brush (97), and the cleaning brush (97) can be attached to the filter screen (95).

8. The energy-saving magnetic suspension air compressor for mining according to claim 2 is characterized in that: An air outlet cavity is formed between the thrust plate (13) and the outer shell (1); a plurality of air outlet channels (19) are circumferentially provided on the outer shell (1); the air outlet channels (19) connect the cooling cavity with the air outlet cavity; and a plurality of air outlet holes (131) are provided on the thrust plate (13); An air outlet is provided on the second cover plate (3), a negative pressure cavity is formed between the second cover plate (3) and the thrust plate (13), and the air outlet hole (131) connects the air outlet cavity with the negative pressure cavity.

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