High-temperature plug-in centrifugal fan

Abstract

The utility model discloses a high-temperature plug-in type centrifugal fan which comprises a fan body. A mounting plate is mounted on one side of the fan, a refrigeration box is mounted at the front end of the mounting plate, a centrifugal impeller is mounted at the front end of the refrigeration box, a transmission shaft is mounted at one end of the centrifugal impeller, one end of the transmission shaft penetrates through the refrigeration box and the mounting plate, and a heat conduction oil cavity is formed in the position, located on the outer side of the transmission shaft, in the refrigeration box; a driven belt pulley is mounted on the outer side of the transmission shaft, a mounting frame is mounted on the outer side of the mounting plate, a motor is mounted at the upper end of the mounting frame, a driving belt pulley is mounted at the front end of the motor, and the driving belt pulley and the driven belt pulley are connected through a belt. The cooling oil filled in the heat conduction oil cavity can cool the transmission shaft, the shaft rod can be cooled through the cooling oil, bearings on the two sides of the transmission shaft can be lubricated, and rotation of the transmission shaft is not affected.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal fans, in particular to a high-temperature plug-in centrifugal fan. Background Art

[0002] Plug-in fans, also known as duct fans or roof fans, are a new type of ventilation equipment widely used in industrial production and building ventilation. Its main function is to improve the working environment, improve air quality, eliminate odors, and effectively discharge harmful gases.

[0003] Chinese patent number CN202311171250.7 discloses a high-temperature plug-in centrifugal fan, including a mounting panel, an air guide, a main impeller and a driving mechanism. The mounting panel and the air guide are both provided with a sealing connection assembly, which includes a mounting frame, a mounting plate and a flexible sealing strip. The mounting frame is fixedly mounted in the side wall of the oven, and two mounting plates are respectively fixedly mounted on the mounting panel and the air guide. A card slot is formed on the mounting frame, and a flexible sealing strip is arranged in the card slot. The mounting plate is plugged into the flexible sealing strip. The mounting frame at the mounting panel is bent near the fan insertion side to form a connecting portion, and the mounting panel is fixedly connected to the connecting portion through a connector. The prior art will form resistance during the heat dissipation process, affecting the rotation speed, thereby affecting the efficiency of the fan. Utility Model Content

[0004] The utility model aims to provide a high-temperature plug-in centrifugal fan to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-temperature plug-in centrifugal fan, comprising a fan; a mounting plate is installed on one side of the fan, a refrigeration box is installed at the front end of the mounting plate, a centrifugal impeller is installed at the front end of the refrigeration box, a transmission shaft is installed at one end of the centrifugal impeller, one end of the transmission shaft passes through the refrigeration box and the mounting plate, a heat transfer oil chamber is installed at the outside of the transmission shaft inside the refrigeration box, a driven pulley is installed at the outside of the transmission shaft, a mounting frame is installed at the outside of the mounting plate, a motor is installed at the upper end of the mounting frame, a driving pulley is installed at the front end of the motor, and the driving pulley and the driven pulley are connected by a belt.

[0006] Preferably, a high temperature resistant layer is provided on the outer side of the centrifugal impeller, and the high temperature resistant layer is provided as a ceramic high temperature resistant coating layer.

[0007] Preferably, a heat conducting plate is arranged outside the heat conducting oil cavity, and the heat conducting plate extends into the interior of the refrigeration box.

[0008] Preferably, a heat-insulating shaft is provided in the middle position of the transmission shaft, and the heat-insulating shaft is installed in the middle position of the transmission shaft.

[0009] Preferably, a thermal insulation pad is provided at the upper end of the mounting frame, and the thermal insulation pad is fixed to the upper side of the mounting frame by bolts.

[0010] Preferably, a protective cover is provided on the outer side of the driving pulley and the driven pulley, and the protective cover is installed at one end of the mounting frame.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The cooling oil filled in the heat transfer oil cavity can cool down the transmission shaft. The setting of the cooling oil can not only cool down the shaft, but also lubricate the bearings on both sides of the transmission shaft without affecting the rotation of the transmission shaft;

[0013] 2. The ceramic high temperature resistant coating layer used in the high temperature resistant layer has strong high temperature resistance, which can reduce the high temperature corrosion of the centrifugal impeller during use and extend the service life of the centrifugal impeller;

[0014] 3. The setting of the heat-insulating shaft can prevent heat from being transferred through the transmission shaft, thus preventing heat from being transferred outward and affecting the belt;

[0015] 4. The protective cover is used to protect the driving pulley and the driven pulley to prevent workers from getting close to them and causing danger. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0019] Figure 3 It is a side view structural schematic diagram of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the refrigeration box of the utility model.

[0021] In the figure: 1. fan; 2. heat transfer plate; 3. high temperature resistant layer; 4. centrifugal impeller; 5. heat transfer oil chamber; 6. refrigeration box; 7. mounting plate; 8. insulation shaft; 9. transmission shaft; 10. driven pulley; 11. mounting frame; 12. protective cover; 13. driving pulley; 14. motor; 15. insulation pad. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 In the embodiment of the utility model, a high-temperature plug-in centrifugal fan includes a fan 1; a mounting plate 7 is installed on one side of the fan 1, a refrigeration box 6 is installed at the front end of the mounting plate 7, a centrifugal impeller 4 is installed at the front end of the refrigeration box 6, a transmission shaft 9 is installed at one end of the centrifugal impeller 4, one end of the transmission shaft 9 passes through the refrigeration box 6 and the mounting plate 7, a heat transfer oil chamber 5 is installed at the outer side of the transmission shaft 9 inside the refrigeration box 6, a heat transfer plate 2 is arranged outside the heat transfer oil chamber 5, and the heat transfer plate 2 extends into the refrigeration box 6. The setting of the heat transfer plate 2 can quickly introduce the heat inside the heat transfer oil chamber 5 into the refrigeration box 6, so as to improve the cooling of the inside of the heat transfer oil chamber 5. A driven pulley 10 is installed on the outside of the transmission shaft 9, a mounting frame 11 is installed on the outside of the mounting plate 7, a motor 16 is installed on the upper end of the mounting frame 11, and a heat insulation pad 15 is provided on the upper end of the mounting frame 11. The heat insulation pad 15 is fixedly installed on the upper side of the mounting frame 11 by bolts. The setting of the heat insulation board can increase the heat insulation effect on the upper side of the mounting frame 11 to avoid the high temperature of the mounting frame 11 and the influence on the use of the motor 16. A driving pulley 13 is installed at the front end of the motor 16. The driving pulley 13 and the driven pulley 10 are connected by a belt. A protective cover 12 is provided on the outside of the driving pulley 13 and the driven pulley 10. The protective cover 12 is installed at one end of the mounting frame 11. The setting of the protective cover 12 is used to protect the driving pulley 13 and the driven pulley 10 to avoid danger when the staff approaches.

[0024] A high temperature resistant layer 3 is arranged on the outside of the centrifugal impeller 4, and the high temperature resistant layer 3 is arranged as a ceramic high temperature resistant coating layer. The ceramic high temperature resistant coating layer used in the high temperature resistant layer 3 has strong high temperature resistance, which can reduce the high temperature corrosion of the centrifugal impeller 4 during use and extend the service life of the centrifugal impeller 4.

[0025] An insulating shaft 8 is arranged in the middle of the transmission shaft 9. The insulating shaft 8 is installed in the middle of the transmission shaft 9. The setting of the insulating shaft 8 can block the heat from being transferred through the transmission shaft 9, thereby preventing the heat from being transferred outward and affecting the belt.

[0026] The working principle and use process of the utility model are as follows: when in use, the fan 1 is installed at a designated position through the mounting plate 7, and the motor 16 is turned on by the switch. The motor 16 will drive the driven pulley 10 to rotate through the active pulley 13, and the driven pulley 10 will drive the centrifugal impeller 4 to rotate through the transmission shaft 9. The airflow is driven by the centrifugal impeller 4 to flow, and at the same time, the condensate is introduced into the interior of the refrigeration box 6 to cool the heat transfer oil chamber (5) inside the refrigeration box 6. The cooling oil filled in the heat transfer oil chamber (5) can cool the transmission shaft 9. The setting of the cooling oil can not only cool the shaft rod, but also lubricate the bearings on both sides of the transmission shaft 9 without affecting the rotation of the transmission shaft 9.

[0027] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-temperature plug-in centrifugal fan, comprising a fan (1); characterized in that: A mounting plate (7) is mounted on one side of the fan (1), a refrigeration box (6) is mounted on the front end of the mounting plate (7), a centrifugal impeller (4) is mounted on the front end of the refrigeration box (6), a transmission shaft (9) is mounted on one end of the centrifugal impeller (4), one end of the transmission shaft (9) passes through the refrigeration box (6) and the mounting plate (7), a heat transfer oil chamber (5) is mounted inside the refrigeration box (6) at an outer position of the transmission shaft (9), a driven pulley (10) is mounted on the outer side of the transmission shaft (9), a mounting frame (11) is mounted on the outer side of the mounting plate (7), an electric motor (16) is mounted on the upper end of the mounting frame (11), a driving pulley (13) is mounted on the front end of the electric motor (16), and the driving pulley (13) and the driven pulley (10) are connected by a belt.

2. A high temperature plug-in centrifugal fan according to claim 1, characterized in that: A high temperature resistant layer (3) is arranged on the outer side of the centrifugal impeller (4), and the high temperature resistant layer (3) is arranged as a ceramic high temperature resistant coating layer.

3. A high temperature plug-in centrifugal fan according to claim 1, characterized in that: A heat conducting plate (2) is arranged outside the heat conducting oil chamber (5), and the heat conducting plate (2) extends into the interior of the refrigeration box (6).

4. A high temperature plug-in centrifugal fan according to claim 1, characterized in that: A heat-insulating shaft (8) is provided at the middle position of the transmission shaft (9), and the heat-insulating shaft (8) is installed at the middle position of the transmission shaft (9).

5. A high temperature plug-in centrifugal fan according to claim 1, characterized in that: A heat insulation pad (15) is provided at the upper end of the mounting frame (11), and the heat insulation pad (15) is fixedly mounted on the upper side of the mounting frame (11) by means of bolts.

6. A high temperature plug-in centrifugal fan according to claim 1, characterized in that: A protective cover (12) is provided on the outside of the driving pulley (13) and the driven pulley (10), and the protective cover (12) is installed at one end of the mounting frame (11).

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