Circulating fan of spaceflight furnace coal grinding system

Abstract

The utility model discloses a circulating fan of a spaceflight furnace coal grinding system. The circulating fan comprises a bottom plate, a lower shell, bolts, fan blades, an annular plate and an upper shell. Second supporting legs are mounted on the upper surface of the bottom plate, a lower shell is mounted at the upper ends of the second supporting legs, a lower mounting plate is mounted on the upper surface of the lower shell, a lifting assembly is mounted on the upper surface of the bottom plate, the upper shell is connected with the lifting assembly, and an air outlet is formed in the front end of the upper shell. And an air inlet is formed in the outer surface of the upper shell. Compared with the prior art, the air volume of the circulating fan can be increased through the large gear and the small gear, the upper shell and the lower shell can be detached through the lifting assembly to replace damaged fan blades, and therefore the efficiency of the circulating fan is effectively improved; the sealing performance between the upper shell and the lower shell can be enhanced through the bolts, the nuts, the positioning plates and the positioning grooves, so that the leakage-proof performance of the circulating fan is improved, and the fan blades are effectively prevented from being abraded.

Description

Technical Field

[0001] The utility model relates to the technical field of circulating fans, in particular to a circulating fan for a coal grinding system of an aerospace furnace. Background Art

[0002] According to the requirements of coal chemical industry and power generation technology, the aerospace furnace coal mill device adopts dry coal powder fluidized bed gasification. Dry pulverized coal and pure oxygen (purity 99.6%) are burned in the gasifier to produce qualified synthesis gas (mainly H2 and CO). Among them, a circulating fan will be set at the outlet of the aerospace furnace coal mill to enhance the combustion effect in the gasifier by conveying air.

[0003] However, after the circulating fan is used for a long time, the fan blades inside the circulating fan will be damaged by particles such as wind sand, coal slag, and dust, causing the fan blades to wear and scratch, which in turn leads to reduced efficiency of the circulating fan. In addition, the fan blades inside the circulating fan usually cannot be replaced or repaired. For this reason, we propose a circulating fan for aerospace furnace coal grinding system. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a circulating fan for a space furnace coal grinding system, which can not only increase the air volume of the fan by means of a large gear and a small gear, but also can disassemble the upper shell and the lower shell by means of a lifting assembly to replace damaged fan blades, so as to effectively improve the efficiency of the circulating fan. In addition, the sealing between the upper shell and the lower shell can be strengthened by means of bolts, nuts, positioning plates and positioning grooves, thereby improving the leak-proofness of the circulating fan, so as to effectively prevent the fan blades from being worn, and can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a circulation fan of a coal grinding system of an aerospace furnace, comprising a bottom plate, a lower shell, bolts, fan blades, an annular plate and an upper shell;

[0006] The upper surface of the bottom plate is provided with a second leg, the upper end of the second leg is provided with a lower shell body, the upper surface of the lower shell body is provided with a lower mounting plate, the upper surface of the bottom plate is provided with a lifting assembly, the upper shell body and the lifting assembly are connected, the front end of the upper shell body is provided with an air outlet, the outer surface of the upper shell body is provided with an air inlet, the lower surface of the upper shell body is provided with an upper mounting plate, the side surface of the lower mounting plate is rotatably provided with a first rotating shaft, the outer surface of the left end of the first rotating shaft is evenly provided with a plurality of connecting plates, the outer ends of the plurality of connecting plates are connected with the circumferential inner wall of the annular plate, the circumferential outer surface of the annular plate is provided with a groove, the bottom surface of the groove is evenly provided with a plurality of card grooves, the lower end of the fan blade is provided with a card block, the card block and the card groove are buckled and connected, the side surface of the annular plate and the side surface of the fan blade are provided with a limiting hole at the corresponding position, and a limiting column is provided in the limiting hole. The two ends of the limit column are sleeved with column sleeves, and the upper surface of the lower mounting plate is provided with a positioning groove, and the lower surface of the upper mounting plate is provided with a positioning plate, and the positioning plate and the positioning groove are snap-connected, and the lower mounting plate is evenly provided with a plurality of first through holes, and the upper mounting plate is provided with a second through hole corresponding to the first through hole. The bolt is passed through the first through hole and the second through hole, and a nut is threadedly installed at the lower end of the bolt, and a first support leg is installed on the upper surface of the base plate, and a gear box is installed on the upper end of the first leg, and a second rotating shaft is installed inside the gear box, and the outer end of the first rotating shaft is rotatably connected to the inner wall of the gear box, a large gear is installed on the second rotating shaft, and a small gear is installed on the first rotating shaft, and the large gear and the small gear are meshed and connected, and a first driving assembly is installed on the upper surface of the base plate, and the first driving assembly is connected with the second rotating shaft.

[0007] Further, the lifting assembly includes a fixed bracket installed on the upper surface of the base plate, a lead screw is rotatably installed on the lower surface of the upper end of the fixed bracket, the lower end of the lead screw is rotatably connected to the upper surface of the base plate, a moving block is threadedly installed on the lead screw, a slide is installed on the rear side of the moving block, a slide groove is provided on the right side of the fixed bracket, the slide and the slide groove are slidably connected, a connecting bracket is installed on the right side of the moving block, a bow frame is installed on the lower end of the connecting bracket, connecting columns are installed on both sides of the upper end of the upper shell, and the inner walls of the bow frame are connected to the corresponding connecting columns respectively, and a second driving assembly is installed on the upper surface of the upper end of the fixed bracket, and the second driving assembly is connected to the upper end of the lead screw. First, the parts between the upper shell and the lower shell are disassembled, and then the second driving assembly works to drive the lead screw to work, the lead screw works to drive the moving block to move under the limiting action of the slide and the slide groove, the moving block moves to drive the connecting bracket to move, and the connecting bracket moves to drive the bow frame and the upper shell to move, so as to facilitate the separation of the upper shell and the lower shell.

[0008] Furthermore, the first driving assembly includes a first motor bracket mounted on the upper surface of the bottom plate, a first motor is mounted on the first motor bracket, an output shaft of the first motor is connected to the end of the second rotating shaft through a first coupling, and an input end of the first motor is electrically connected to an output end of an external controller. The first motor is controlled to work by the external controller, and the first motor drives the second rotating shaft to rotate, thereby completing the rotation of the second rotating shaft by electric power.

[0009] Furthermore, the second drive assembly includes a second motor bracket mounted on the upper surface of the upper end of the fixed bracket, a second motor is mounted on the second motor bracket, an output shaft of the second motor is connected to the upper end of the lead screw through a second coupling, and an input end of the second motor is electrically connected to an output end of an external controller. The second motor is controlled to work by the external controller, and the second motor drives the lead screw to rotate, thereby completing the rotation of the lead screw by electric power.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows: the leakage prevention device for the circulating fan of the aerospace furnace coal grinding system, when actually used, drives the second rotating shaft to rotate through the operation of the first driving component, the rotation of the second rotating shaft drives the large gear to rotate, the rotation of the large gear drives the small gear to rotate, and the rotation of the small gear drives the first rotating shaft to rotate. The large gear and the small gear can be used to increase the rotation speed of the first rotating shaft, thereby increasing the air volume of the fan. The internal accessories can be replaced by disassembling the upper shell and the lower shell, and the damaged fan blades can be replaced by limiting holes, limiting columns, blocks and slots, which can effectively improve the efficiency of the circulating fan. The sealing between the upper shell and the lower shell can be strengthened by bolts, nuts, positioning plates and positioning slots, thereby improving the leakage prevention of the circulating fan to effectively prevent the fan blades from being worn. The lifting component facilitates the installation and disassembly between the upper shell and the lower shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model.

[0013] In the figure: 1 bottom plate, 2 lower mounting plate, 3 lower shell, 4 gear box, 5 first leg, 6 first motor, 7 first motor bracket, 8 second motor, 9 second motor bracket, 10 fixed bracket, 11 connecting bracket, 12 moving block, 13 slide groove, 14 bolt, 15 upper mounting plate, 16 air inlet, 17 bow frame, 18 limit column, 19 groove, 20 fan blade, 21 block, 22 annular plate, 23 first rotating shaft, 24 positioning groove, 25 connecting plate, 26 large gear, 27 small gear, 28 lead screw, 29 upper shell. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] See also Figure 1-2 , This embodiment provides a technical solution: a circulation fan of an aerospace furnace coal grinding system, comprising a bottom plate 1, a lower shell 3, bolts 14, fan blades 20, an annular plate 22 and an upper shell 29;

[0016] A second leg is installed on the upper surface of the bottom plate 1, and a lower shell 3 is installed on the upper end of the second leg. A lower mounting plate 2 is installed on the upper surface of the lower shell 3. A lifting assembly is installed on the upper surface of the bottom plate 1, and an upper shell 29 is connected to the lifting assembly. An air outlet is installed at the front end of the upper shell 29, and an air inlet 16 is provided on the outer surface of the upper shell 29. An upper mounting plate 15 is installed on the lower surface of the upper shell 29. A first rotating shaft 23 is rotatably installed on the side of the lower mounting plate 2. A plurality of connecting plates 25 are evenly installed on the outer surface of the left end of the first rotating shaft 23. The outer ends of the plurality of connecting plates 25 are connected to the circumferential inner wall of the annular plate 22. A groove 19 is provided on the circumferential outer surface of the annular plate 22, and a plurality of card grooves are evenly provided on the bottom surface of the groove 19. A card block 21 is installed on the lower end of the fan blade 20, and the card block 21 is connected with the card groove by buckle. A limiting hole is provided at the corresponding position of the side surface of the annular plate 22 and the side surface of the fan blade 20, and a limiting hole is provided in the limiting hole. A limiting column 18, both ends of which are sleeved with column sleeves, a positioning groove 24 is provided on the upper surface of the lower mounting plate 2, and a positioning plate is installed on the lower surface of the upper mounting plate 15, the positioning plate and the positioning groove 24 are snap-connected, a plurality of first through holes are evenly provided on the lower mounting plate 2, a second through hole corresponding to the first through hole is provided on the upper mounting plate 15, a bolt 14 is passed through the first through hole and the second through hole, and a nut is threadedly installed on the lower end of the bolt 14, a first leg 5 is installed on the upper surface of the base plate 1, a gear box 4 is installed on the upper end of the first leg 5, a second rotating shaft is installed inside the gear box 4, an outer end of the first rotating shaft 23 is rotatably connected to the inner wall of the gear box 4, a large gear 26 is installed on the second rotating shaft, a small gear 27 is installed on the first rotating shaft 23, the large gear 26 and the small gear 27 are meshed and connected, a first driving assembly is installed on the upper surface of the base plate 1, and the first driving assembly is connected to the second rotating shaft.

[0017] During actual use, the second rotating shaft is driven to rotate by the first driving component, and the rotation of the second rotating shaft drives the large gear 26 to rotate, and the rotation of the large gear 26 drives the small gear 27 to rotate, and the rotation of the small gear 27 drives the first rotating shaft 23 to rotate. The large gear 26 and the small gear 27 can be used to increase the rotation speed of the first rotating shaft 23, thereby increasing the air volume of the fan. The internal accessories can be replaced by disassembling the upper shell 29 and the lower shell 3. The damaged fan blades 20 can be replaced by the limiting holes, limiting columns 18, blocks 21 and slots, which can effectively improve the efficiency of the circulation fan. The sealing between the upper shell 29 and the lower shell 3 can be strengthened by the bolts 14, nuts, positioning plates and positioning slots 24, thereby improving the leakage resistance of the circulation fan to effectively prevent the fan blades 20 from being worn. The lifting assembly facilitates the installation and disassembly between the upper shell 29 and the lower shell 3.

[0018] The lifting assembly includes a fixed bracket 10 installed on the upper surface of the base plate 1, a lead screw 28 is rotatably installed on the lower surface of the upper end of the fixed bracket 10, the lower end of the lead screw 28 is rotatably connected to the upper surface of the base plate 1, a moving block 12 is threadedly installed on the lead screw 28, a slide plate is installed on the rear side of the moving block 12, a slide groove 13 is provided on the right side of the fixed bracket 10, the slide plate and the slide groove 13 are slidably connected, a connecting bracket 11 is installed on the right side of the moving block 12, a bow frame 17 is installed at the lower end of the connecting bracket 11, connecting columns are installed on both sides of the upper end of the upper shell 29, and the inner wall sides of the bow frame 17 are respectively connected to the corresponding connecting columns, a second driving assembly is installed on the upper surface of the upper end of the fixed bracket 10, and the second driving assembly is connected to the upper end of the lead screw 28. First, disassemble the parts between the upper shell 29 and the lower shell 3, and then the second drive assembly drives the screw 28 to work, and the screw 28 drives the moving block 12 to move under the limiting action of the slide and the slide groove 13, and the movement of the moving block 12 drives the connecting bracket 11 to move, and the movement of the connecting bracket 11 drives the bow frame 17 and the upper shell 29 to move, thereby facilitating the separation of the upper shell 29 and the lower shell 3.

[0019] The first driving assembly includes a first motor bracket 7 mounted on the upper surface of the bottom plate 1, and a first motor 6 is mounted on the first motor bracket 7. The output shaft of the first motor 6 is connected to the end of the second rotating shaft through a first coupling, and the input end of the first motor 6 is electrically connected to the output end of the external controller. The first motor 6 is controlled to work by the external controller, and the first motor 6 drives the second rotating shaft to rotate, thereby completing the rotation of the second rotating shaft by electric power.

[0020] The second driving assembly includes a second motor bracket 9 mounted on the upper surface of the upper end of the fixed bracket 10, and a second motor 8 is mounted on the second motor bracket 9. The output shaft of the second motor 8 is connected to the upper end of the lead screw 28 through a second coupling, and the input end of the second motor 8 is electrically connected to the output end of the external controller. The second motor 8 is controlled to work by the external controller, and the second motor 8 drives the lead screw 28 to rotate, thereby completing the rotation of the lead screw 28 by electric power.

[0021] The working principle of a circulating fan of a space furnace coal grinding system provided by the utility model is as follows: in actual use, the second rotating shaft is driven to rotate by the first driving component, the rotation of the second rotating shaft drives the large gear 26 to rotate, the rotation of the large gear 26 drives the small gear 27 to rotate, and the rotation of the small gear 27 drives the first rotating shaft 23 to rotate. The large gear 26 and the small gear 27 can be used to increase the rotation speed of the first rotating shaft 23, thereby increasing the air volume of the fan. The internal accessories can be replaced by disassembling the upper shell 29 and the lower shell 3. The damaged fan blades 20 can be replaced by the limiting holes, limiting columns 18, blocks 21 and slots, which can effectively improve the efficiency of the circulating fan. The sealing between the upper shell 29 and the lower shell 3 can be strengthened by the bolts 14, nuts, positioning plates and positioning slots 24, thereby improving the leak-proofness of the circulating fan to effectively prevent the fan blades 20 from being worn. The installation and disassembly between the upper shell 29 and the lower shell 3 are facilitated by the lifting component. First, the parts between the upper shell 29 and the lower shell 3 are disassembled, and then the second drive assembly drives the lead screw 28 to work, and the lead screw 28 drives the moving block 12 to move under the limiting action of the slide plate and the slide slot 13, and the movement of the moving block 12 drives the connecting bracket 11 to move, and the movement of the connecting bracket 11 drives the bow frame 17 and the upper shell 29 to move, so as to facilitate the separation of the upper shell 29 and the lower shell 3. The first motor 6 is controlled to work by an external controller, and the first motor 6 drives the second shaft to rotate, so as to complete the rotation of the second shaft by electric power. The second motor 8 is controlled to work by an external controller, and the second motor 8 drives the lead screw 28 to rotate, so as to complete the rotation of the lead screw 28 by electric power.

[0022] It is worth noting that in this embodiment, the core chip of the external controller is an STC single-chip microcomputer, specifically, the model is STC15W204S, and the first motor 6 and the second motor 8 can be freely configured according to the actual application scenario. The first motor 6 and the second motor 8 can be selected from the JE series single-phase servo motors produced by Beijing Mitsubishi Electric (China) Co., Ltd. The external controller controls the operation of the first motor 6 and the second motor 8 using methods commonly used in the prior art.

[0023] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A circulation fan for aerospace furnace coal grinding system, characterized by: It comprises a bottom plate (1), a lower shell (3), bolts (14), fan blades (20), an annular plate (22) and an upper shell (29); The upper surface of the bottom plate (1) is mounted with a second leg, the upper end of the second leg is mounted with a lower shell (3), the upper surface of the lower shell (3) is mounted with a lower mounting plate (2), the upper surface of the bottom plate (1) is mounted with a lifting assembly, the upper shell (29) is connected to the lifting assembly, the front end of the upper shell (29) is mounted with an air outlet, the outer surface of the upper shell (29) is provided with an air inlet (16), the lower surface of the upper shell (29) is mounted with an upper mounting plate (15), and the side surface of the lower mounting plate (2) is rotatably mounted with a first rotating shaft (23), a plurality of connecting plates (25) are evenly mounted on the outer surface of the left end of the first rotating shaft (23), the outer ends of the plurality of connecting plates (25) are connected to the circumferential inner wall of the annular plate (22), a groove (19) is provided on the circumferential outer surface of the annular plate (22), a plurality of clamping grooves are evenly provided on the bottom surface of the groove (19), a clamping block (21) is mounted on the lower end of the fan blade (20), the clamping block (21) and the clamping groove are buckled and connected, and limiting holes are provided at corresponding positions of the side surface of the annular plate (22) and the side surface of the fan blade (20), and the limiting holes are provided in the limiting holes. A limiting column (18) is provided, and both ends of the limiting column (18) are sleeved with a column sleeve, the upper surface of the lower mounting plate (2) is provided with a positioning groove (24), the lower surface of the upper mounting plate (15) is provided with a positioning plate, the positioning plate and the positioning groove (24) are snap-connected, the lower mounting plate (2) is evenly provided with a plurality of first through holes, the upper mounting plate (15) is provided with a second through hole corresponding to the first through hole, the bolt (14) is passed through the first through hole and the second through hole, and a nut is threadedly installed on the lower end of the bolt (14), and the bottom plate A first leg (5) is mounted on the upper surface of the base plate (1); a gear box (4) is mounted on the upper end of the first leg (5); a second rotating shaft is mounted inside the gear box (4); an outer end of the first rotating shaft (23) is rotatably connected to an inner wall of the gear box (4); a large gear (26) is mounted on the second rotating shaft; a small gear (27) is mounted on the first rotating shaft (23); the large gear (26) and the small gear (27) are meshingly connected; a first driving assembly is mounted on the upper surface of the base plate (1); and the first driving assembly is connected to the second rotating shaft.

2. The circulation fan of the coal grinding system of an aerospace furnace according to claim 1, characterized in that: The lifting assembly comprises a fixed bracket (10) mounted on the upper surface of the base plate (1), a lead screw (28) being rotatably mounted on the lower surface of the upper end of the fixed bracket (10), the lower end of the lead screw (28) being rotatably connected to the upper surface of the base plate (1), a moving block (12) being threadedly mounted on the lead screw (28), a slide plate being mounted on the rear side of the moving block (12), a slide groove (13) being provided on the right side of the fixed bracket (10), the slide plate and the slide groove (13) being slidably connected, a connecting bracket (11) being mounted on the right side of the moving block (12), a bow-shaped frame (17) being mounted on the lower end of the connecting bracket (11), connecting columns being mounted on both sides of the upper end of the upper shell (29), the inner walls of the bow-shaped frame (17) being respectively connected to corresponding connecting columns, a second driving assembly being mounted on the upper surface of the upper end of the fixed bracket (10), the second driving assembly being connected to the upper end of the lead screw (28).

3. The circulation fan of the coal grinding system of an aerospace furnace according to claim 1, characterized in that: The first drive assembly comprises a first motor bracket (7) mounted on the upper surface of the base plate (1); a first motor (6) is mounted on the first motor bracket (7); an output shaft of the first motor (6) is connected to an end of a second rotating shaft via a first coupling; an input end of the first motor (6) is electrically connected to an output end of an external controller.

4. The circulation fan of the coal grinding system of an aerospace furnace according to claim 2, characterized in that: The second drive assembly comprises a second motor bracket (9) mounted on the upper surface of the upper end of the fixed bracket (10), a second motor (8) being mounted on the second motor bracket (9), an output shaft of the second motor (8) being connected to the upper end of the lead screw (28) via a second coupling, and an input end of the second motor (8) being electrically connected to an output end of an external controller.

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