CN216008950U

CN216008950U - Special high-temperature direct-connection fan for coating

Info

Publication number: CN216008950U
Application number: CN202120858358.3U
Authority: CN
Inventors: 张建友; 李海
Original assignee: Linqu Sanmu Electronic Equipment Co ltd
Current assignee: Linqu Sanmu Electronic Equipment Co ltd
Priority date: 2021-04-25
Filing date: 2021-04-25
Publication date: 2022-03-11
Anticipated expiration: 2031-04-25

Abstract

The utility model relates to the technical field of fans, in particular to a special high-temperature direct-connected fan for coating, which comprises a cooling box, a transmission shaft, a heat insulation box and a motor, wherein the front end of the transmission shaft is provided with an impeller, the transmission shaft sequentially penetrates through the heat insulation box and the cooling box, and the rear end of the transmission shaft is connected with the motor through a transmission device; the cooling box includes pivot chamber and cooling circulation chamber, and the transmission shaft passes through the bearing to be connected with the pivot chamber rotation, and one side in cooling circulation chamber is equipped with lubricating oil filling chamber, and lubricating oil filling chamber communicates with each other with the pivot chamber through the oiling mouth that the bottom set up. The heat insulation box is arranged between the transmission shaft and the impeller, so that the bearing and the transmission shaft can be isolated outside a high-temperature area, and heat is reduced to be transferred to the bearing along the transmission shaft; the arranged cooling circulation cavity can form circulating cooling water to carry out uninterrupted water cooling on the bearing and the transmission shaft; the lubricating oil filling cavity is arranged to complete the filling of the lubricating oil without disassembly, and the lubricating oil enters the rotating shaft cavity from the oil filling port to complete the lubricating work of the bearing.

Description

Special high-temperature direct-connection fan for coating

Technical Field

The utility model relates to the technical field of fans, in particular to a special high-temperature direct-connection fan for coating.

Background

The drying box is widely applied to the industries of chemical industry, electronic communication, plastics, cables, electroplating, hardware, rubber products, molds, spraying, printing, medical treatment, aerospace, universities and colleges and the like.

In order to effectively dry the articles, a high-temperature fan is generally arranged in the drying box. The high-temperature fan is used as power support of high-temperature gas circulation in the drying box, the high-temperature fan can be located in a high-temperature environment at any time, and through a heat transfer effect, heat is transferred to a bearing part through a transmission shaft to cause bearing failure, so that a fan unit breaks down. In addition, the fan is located in a high-temperature environment for a long time, the loss of lubricating oil can be accelerated, the existing fan is difficult to fill, lubricate and change oil, the lubricating and oil changing can be carried out only after the fan is disassembled, and time and labor are wasted.

In view of the above, the prior art is obviously inconvenient and disadvantageous in practical use, and needs to be improved.

Disclosure of Invention

Aiming at the technical problems in the prior art, the utility model aims to provide a special high-temperature direct-connection fan for coating, so as to solve the problems that a bearing is easy to overheat and lose efficacy and lubricating oil is difficult to fill in the prior art.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a special high-temperature direct-connection fan for coating comprises a cooling box, a transmission shaft, a heat insulation box and a motor, wherein an impeller is arranged at the front end part of the transmission shaft, the transmission shaft sequentially penetrates through the heat insulation box and the cooling box, and the rear end part of the transmission shaft is connected with an output shaft of the motor through a transmission device; the cooling box includes the pivot chamber that is used for placing the transmission shaft and encircles the pivot chamber so that carry out cooling's refrigeration cycle chamber to the transmission shaft, the transmission shaft rotates in the pivot intracavity through a plurality of bearings and is connected with the lateral wall in pivot chamber, the refrigeration cycle chamber is equipped with coolant liquid entry and coolant liquid export, one side in refrigeration cycle chamber is provided with independent lubricating oil filling chamber, lubricating oil filling chamber communicates with each other with the pivot chamber through the oiling mouth that the bottom set up, the filling end in lubricating oil filling chamber is equipped with the blanking cover.

Because the fan needs to convey high-temperature media, the bearing supporting the transmission shaft is easily affected by high temperature and is easily subjected to jamming and abrasion in a high-temperature environment, so that the service life of the fan is greatly shortened or the fan cannot run directly; circulating cooling water can be formed through the arranged cooling circulation cavity, and the bearing and the transmission shaft are subjected to uninterrupted water cooling; the lubricating oil filling cavity is arranged, so that the lubricating oil can be filled without being detached, and the lubricating oil enters the rotating shaft cavity from the oil filling port to complete the lubricating work of the bearing.

As a further scheme of the utility model, a first sealing cover and a second sealing cover which penetrate through the transmission shaft and are used for sealing and preventing dust are respectively arranged on two sides of the rotating shaft cavity, a first mechanical seal is arranged between the first sealing cover and a port of the rotating shaft cavity, and a second mechanical seal is arranged between the second sealing cover and the other port of the rotating shaft cavity. The first and second mechanical seals can effectively avoid leakage of lubricating oil, reduce loss of lubricating oil, and the first and second sealing covers can avoid external particulate matters from entering the rotating shaft cavity, so that the running stability of the bearing is ensured.

As a further aspect of the present invention, the transmission device includes a driving pulley and a driven pulley, the driving pulley is fixed on an output shaft of the motor, the driven pulley is fixed on a rear end portion of the transmission shaft, and the driving pulley is connected to the driven pulley through a belt. The belt has good elasticity, can alleviate impact and vibration in work, and has stable motion and no noise; when the load is too large, the belt slips on the wheel, so that other parts can be prevented from being damaged, and the safety protection effect is achieved.

As a further scheme of the utility model, a shaft sleeve for limiting is arranged between the bearings. The axial displacement of the shaft sleeve is limited, and the running stability of the bearing is ensured.

As a further aspect of the utility model, the bearing is a ceramic bearing. The influence of expansion with heat and contraction with cold on the ceramic is smaller than that of steel, so that the bearing can be allowed to work in an environment with violent temperature difference change when the gap of the bearing is fixed; the ceramic material has high temperature resistance of 1200 ℃, good self-lubrication, and no expansion caused by temperature difference when the use temperature is between 100 and 800 ℃.

As a further scheme of the utility model, a plurality of heat dissipation holes are formed in the circumferential surface of the shaft sleeve. Firstly, the contact area with a transmission shaft is reduced, and the heat generated by friction is reduced; and secondly, lubricating oil can conveniently flow between the shaft sleeve and the transmission shaft, and the friction between the shaft sleeve and the transmission shaft is reduced.

In conclusion, the utility model has the following beneficial effects:

the heat insulation box is arranged between the transmission shaft and the impeller, so that the bearing and the transmission shaft can be isolated outside a high-temperature area, and high-temperature heat is reduced to be transferred to the bearing along the transmission shaft; the arranged cooling circulation cavity can form circulating cooling water to carry out uninterrupted water cooling on the bearing and the transmission shaft; the lubricating oil filling cavity is arranged to complete the filling of the lubricating oil without disassembly, and the lubricating oil enters the rotating shaft cavity from the oil filling port to complete the lubricating work of the bearing.

Drawings

In order to more clearly illustrate the embodiments or technical solutions of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of a cooling tank of the present invention.

Reference numerals: 1. impeller, 2, heat-insulating box, 3, motor, 4, driving pulley, 5, belt, 6, driven pulley, 7, transmission shaft, 8, cooler bin, 9, first sealed lid, 10, first mechanical seal, 11, lubricating oil filling chamber, 12, oiling mouth, 13, blanking cover, 14, cooling circulation chamber, 15, coolant liquid entry, 16, coolant liquid outlet, 17, second sealed lid, 18, second mechanical seal, 19, bearing, 20, pivot chamber, 21, axle sleeve, 22, louvre.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, belong to the scope of the present invention.

Referring to the attached drawings 1 to 2, the high-temperature direct-connection fan comprises a cooling box 8, a transmission shaft 7, a heat insulation box 2 and a motor 3, wherein an impeller 1 is arranged at the front end of the transmission shaft 7, the transmission shaft 7 sequentially penetrates through the heat insulation box 2 and the cooling box 8, and the rear end of the transmission shaft 7 is connected with an output shaft of the motor 3 through a transmission device.

Referring to fig. 1, the driving device includes a driving pulley 4 and a driven pulley 6, the driving pulley 4 is fixed on an output shaft of the motor 3, the driven pulley 6 is fixed on a rear end portion of a transmission shaft 7, and the driving pulley 4 is connected with the driven pulley 6 through a belt 5. The belt 5 has good elasticity, can alleviate impact and vibration in work, and has stable motion and no noise. When the load is too large, the belt 5 slips on the wheel, so that other parts can be prevented from being damaged, and the safety protection effect is achieved. The heat insulation box 2 arranged between the transmission shaft 7 and the impeller 1 can isolate the transmission shaft 7 and the rear part outside a high-temperature area, and reduce the transmission of high-temperature heat to other transmission parts along the transmission shaft 7.

Referring to fig. 2, the cooling box 8 includes a rotating shaft cavity 20 for placing the transmission shaft 7 and a cooling circulation cavity 14 surrounding the rotating shaft cavity 20 for cooling the transmission shaft 7, the transmission shaft 7 is rotatably connected with the side wall of the rotating shaft cavity 20 in the rotating shaft cavity 20 through a plurality of bearings 19, and the cooling circulation cavity 14 is provided with a cooling liquid inlet 15 and a cooling liquid outlet 16. The cooling circulation cavity 14 is provided with a cooling liquid inlet 15 and a cooling liquid outlet 16 which are connected into a circulation device, so that circulating cooling water can be formed, and the bearing 19 and the transmission shaft 7 are subjected to uninterrupted water cooling.

Referring to fig. 2, an independent lubricating oil filling cavity 11 is arranged on one side of the cooling circulation cavity 14, the lubricating oil filling cavity 11 is communicated with the rotating shaft cavity 20 through an oil filling port 12 arranged at the bottom, and a blocking cover 13 is arranged at the oil filling end of the lubricating oil filling cavity 11. The lubricating oil filling cavity 11 is arranged to complete the filling of the lubricating oil without being disassembled, and the lubricating oil enters the rotating shaft cavity 20 from the oil filling port 12 to complete the lubricating work of the bearing 19.

Referring to fig. 2, a first sealing cover 9 and a second sealing cover 17 which penetrate through the transmission shaft 7 and are used for sealing and preventing dust are respectively arranged on two sides of the rotating shaft cavity 20, a first mechanical seal 10 is arranged between the first sealing cover 9 and one end of the rotating shaft cavity 20, and a second mechanical seal 18 is arranged between the second sealing cover 17 and the other end of the rotating shaft cavity 20. The first and second mechanical seals can effectively avoid leakage of lubricating oil, reduce loss of lubricating oil, and the first and second sealing covers can avoid external particulate matters from entering the rotating shaft cavity 20, so that the running stability of the bearing 19 is ensured. For improved performance, the bearings 19 are ceramic bearings. The influence of expansion with heat and contraction with cold on the ceramic is smaller than that of steel, so that when the clearance of the bearing 19 is fixed, the bearing 19 can be allowed to work in an environment with violent temperature difference change; the ceramic material has high temperature resistance of 1200 ℃, good self-lubrication, and no expansion caused by temperature difference when the use temperature is between 100 and 800 ℃. And a shaft sleeve 21 for limiting is arranged between the bearings 19. A plurality of heat radiation holes 22 are formed in the circumferential surface of the sleeve 21. Firstly, the contact area with the transmission shaft 7 is reduced, and the heat generated by friction is reduced; secondly, lubricating oil flows into between axle sleeve 19 and transmission shaft 7 conveniently, reduces the friction of axle sleeve 21 and transmission shaft 7.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention.

The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the scope of the present invention is defined by the claims. Various modifications and equivalents may be made by those skilled in the art to the present invention without departing from the spirit and scope of the utility model, and such modifications and equivalents should be considered to fall within the scope of the utility model.

Claims

1. A special high-temperature direct-connection fan for coating comprises a cooling box (8), a transmission shaft (7), a heat insulation box (2) and a motor (3), wherein an impeller (1) is arranged at the front end of the transmission shaft (7), the transmission shaft (7) sequentially penetrates through the heat insulation box (2) and the cooling box (8), and the rear end of the transmission shaft (7) is connected with an output shaft of the motor (3) through a transmission device; the method is characterized in that: cooling box (8) are including pivot chamber (20) that are used for placing transmission shaft (7) and encircle pivot chamber (20) so that carry out cooling's cooling circulation chamber (14) to transmission shaft (7), transmission shaft (7) are connected with the lateral wall rotation in pivot chamber (20) through a plurality of bearings (19) in pivot chamber (20), cooling circulation chamber (14) are equipped with coolant liquid entry (15) and coolant liquid outlet (16), one side in cooling circulation chamber (14) is provided with independent lubricating oil filling chamber (11), lubricating oil filling chamber (11) communicate with each other with pivot chamber (20) through oiling mouth (12) that the bottom set up, the oiling end in lubricating oil filling chamber (11) is equipped with blanking cover (13).

2. The special high-temperature direct-connection fan for coating according to claim 1, characterized in that: the two sides of the rotating shaft cavity (20) are respectively provided with a first sealing cover (9) and a second sealing cover (17) which penetrate through the transmission shaft (7) and are used for sealing and preventing dust, a first mechanical seal (10) is arranged between the first sealing cover (9) and the port of the rotating shaft cavity (20), and a second mechanical seal (18) is arranged between the second sealing cover (17) and the other port of the rotating shaft cavity (20).

3. The special high-temperature direct-connection fan for coating according to claim 1, characterized in that: the transmission device comprises a driving belt wheel (4) and a driven belt wheel (6), the driving belt wheel (4) is fixed on an output shaft of the motor (3), the driven belt wheel (6) is fixed at the rear end part of the transmission shaft (7), and the driving belt wheel (4) is connected with the driven belt wheel (6) through a belt (5).

4. The special high-temperature direct-connection fan for coating according to claim 1, characterized in that: and a shaft sleeve (21) for limiting is arranged between the bearings (19).

5. The special high-temperature direct-connection fan for coating according to claim 4, characterized in that: the bearing (19) is a ceramic bearing.

6. The special high-temperature direct-connection fan for coating according to claim 4, characterized in that: the circumference of the shaft sleeve (21) is provided with a plurality of heat dissipation holes (22).