CN220302396U

CN220302396U - Zero leakage fan

Info

Publication number: CN220302396U
Application number: CN202321487733.3U
Authority: CN
Inventors: 徐孟磊; 张浙江; 马贵松
Original assignee: Ningfeng Technology Ningbo Co ltd
Current assignee: Ningfeng Technology Ningbo Co ltd
Priority date: 2023-06-12
Filing date: 2023-06-12
Publication date: 2024-01-05
Anticipated expiration: 2033-06-12

Abstract

The utility model relates to the field of fans and discloses a zero-leakage fan, which has the technical scheme that the zero-leakage fan comprises a frame body and a motor arranged on the frame body, wherein the output end of the motor is detachably connected with a main shaft, a bearing box is arranged on the main shaft, the main shaft is ventilated into an air groove through an air pipe, so that the air pressure in the air groove is increased, the air pressure in the air groove is slightly higher than the air pressure in a shell, the air in the shell cannot leak through a labyrinth seal groove, the tightness is ensured, daily maintenance and the replacement of vulnerable parts are not needed, cold water is introduced into the cooling groove through a cooling water pipe to cool a rear end cover and the main shaft, and the cold water can flow out from another cooling water pipe, so that the effectiveness and the continuity of cooling are ensured.

Description

Zero leakage fan

Technical Field

The utility model relates to the field of fans, in particular to a zero-leakage fan.

Background

In the metallurgical industry, many fan media contain inflammable and explosive components such as H2, CO and the like, and the temperature of the media is very high between 200 ℃ and 350 ℃ according to different working conditions, so that higher requirements are put on the functionality of the fan, firstly, zero leakage of the medium gas is ensured, and secondly, the fan can normally and safely operate at high temperature.

In the conventional fan scheme, the shaft seal is usually sealed by adopting a plurality of graphite rings and nitrogen-filled carbon rings, but the carbon ring is high in sealing cost, and the graphite carbon rings are easy to wear and need to be checked and replaced regularly.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide a zero-leakage fan which is sealed in an air pressure mode and free from daily maintenance.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a zero leakage fan, includes the support body and set up in motor on the support body, the output of motor can be dismantled and be connected with the main shaft, be provided with the bearing box on the main shaft, the main shaft deviates from the one end fixedly connected with impeller of motor, can dismantle on the support body and be connected with the casing, the impeller is located in the casing, the bearing box includes the rear end cap, the rear end cap with be provided with the labyrinth seal groove between the main shaft, the air channel has been seted up on the rear end cap, the intercommunication has the trachea on the air channel, the air channel is located the labyrinth seal groove deviates from one side of impeller.

As a further improvement of the utility model, a cooling groove is formed in the rear end cover, and two cooling water pipes are communicated with the cooling groove.

As a further improvement of the utility model, the bearing box further comprises a box body, wherein the box body is fixedly connected with the rear end cover, and the box body is provided with an oil filling hole.

As a further improvement of the utility model, the bearing box further comprises a front end cover, wherein the front end cover is fixedly connected with the box body, two framework seals are arranged between the front end cover and the main shaft, and an oil injection ring is arranged between the two framework seals and is connected with an oil injection pipe.

As a further improvement of the utility model, the rear end cover is detachably connected with a first flange, the machine shell is detachably connected with a second flange, and a corrugated pipe is connected between the first flange and the second flange.

As a further improvement of the utility model, a plurality of fixing lugs are formed on the first flange, fixing holes are formed on the fixing lugs, a screw rod is connected to the second flange in a threaded mode, and the screw rod penetrates through the fixing holes and is connected with two fixing nuts in a threaded mode.

As a further improvement of the utility model, angle steel is detachably connected between the shell and the frame body.

As a further improvement of the utility model, the frame body is fixedly connected with a first channel steel, the casing is fixedly connected with a second channel steel, and the first channel steel and the second channel steel are detachably connected and leave a gap.

As a further improvement of the utility model, a plurality of reinforcing ribs are welded on the rear side of the casing.

As a further improvement of the utility model, an air inlet shell is welded on the shell.

The utility model has the beneficial effects that: according to the utility model, the air pipe is used for ventilating the air groove, so that the air pressure in the air groove is increased and slightly higher than the air pressure in the shell, the air in the shell cannot leak through the labyrinth seal groove, the tightness is ensured, daily maintenance and replacement of vulnerable parts are not required, and cold water is introduced into the cooling groove through the cooling water pipe to cool the rear end cover and the main shaft, and the cold water can flow out from the other cooling water pipe, so that the effectiveness and the persistence of cooling are ensured.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is an enlarged schematic view of the structure of FIG. 1A according to the present utility model;

FIG. 3 is a schematic view of the structure of the present utility model facing the air intake housing;

FIG. 4 is a cross-sectional view of the present utility model;

fig. 5 is an enlarged schematic view of the structure of fig. 4B according to the present utility model.

Reference numerals: 1. a frame body; 11. angle steel; 12. a first channel steel; 2. a motor; 3. a main shaft; 4. a bearing housing; 41. a rear end cover; 411. a labyrinth seal groove; 412. an air tank; 413. an air pipe; 414. a cooling tank; 415. a cooling water pipe; 416. a first flange; 417. a fixed ear; 42. a case; 421. an oil filling hole; 43. a front end cover; 431. sealing a framework; 432. oil injection ring; 433. a filler pipe; 5. an impeller; 6. a housing; 61. a second flange; 62. a bellows; 63. a screw; 64. a fixing nut; 65. a second channel steel; 66. reinforcing ribs; 67. and an air inlet shell.

Detailed Description

The utility model will now be described in further detail with reference to the drawings and examples. Wherein like parts are designated by like reference numerals. It should be noted that the words "front", "back", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "bottom" and "top", "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.

Referring to fig. 1 and 4, the zero leakage fan of the present embodiment includes a frame 1 and a motor 2 disposed on the frame 1, where the frame 1 is provided with three layers, and rubber sealing pads are sandwiched between two adjacent layers, so as to reduce the influence of vibration on the whole equipment;

referring to fig. 4 and 5, the output end of the motor 2 is detachably connected with the main shaft 3, the motor 2 is connected with the main shaft 3 through a coupling, a bearing box 4 is arranged on the main shaft 3, one end of the main shaft 3 deviating from the motor 2 is fixedly connected with an impeller 5, the impeller 5 rotates to realize the flow of wind, a housing 6 is detachably connected on the frame 1, the impeller 5 is positioned in the housing 6, the bearing box 4 comprises a rear end cover 41, a labyrinth seal groove 411 is arranged between the rear end cover 41 and the main shaft 3, an air groove 412 is formed in the rear end cover 41, an air pipe 413 is communicated with the air groove 412, the air is ventilated into the air groove 412 through the air pipe 413, so that the air pressure in the air groove 412 is increased and slightly higher than the air pressure in the housing 6, the air in the housing 6 cannot leak through the labyrinth seal groove 411, the tightness is ensured, the daily maintenance and the replacement of a vulnerable part are not needed, the air pressure in the air groove 412 is only required to be kept, and the air groove 412 is positioned at one side deviating from the impeller 5.

Referring to fig. 5, a cooling groove 414 is formed in the rear end cover 41, two cooling water pipes 415 are connected to the cooling groove 414, cold water is introduced into the cooling groove 414 through one cooling water pipe 415 to cool the rear end cover 41 and the main shaft 3, and the cold water can flow out from the other cooling water pipe 415, so that the effectiveness and the persistence of cooling are ensured.

Referring to fig. 5, the bearing housing 4 further includes a housing 42, where the housing 42 is fixedly connected to the rear end cover 41, and a suspension ring is provided on the housing 42 to facilitate movement of the housing 42; the oil filling hole 421 is formed in the box body 42, the sealing ring is arranged between the rear end cover 41 and the box body 42, the first annular groove is formed in one side, facing the box body 42, of the rear end cover 41, and the sealing ring is embedded in the first annular groove, so that the sealing performance between the rear end cover 41 and the box body 42 is improved.

The bearing box 4 further comprises a front end cover 43, the front end cover 43 is fixedly connected with the box body 42, a second annular groove is formed in one side, facing the box body 42, of the front end cover 43, a sealing ring is embedded in the second annular groove, sealing performance between the front end cover 43 and the box body 42 is improved, two skeleton seals 431 are arranged between the front end cover 43 and the main shaft 3, an oil injection ring 432 is arranged between the two skeleton seals 431, the oil injection ring 432 is connected with an oil injection pipe 433, and the two skeleton seals 431 improve sealing performance between the front end cover 43 and the main shaft 3 and prevent oil leakage.

Referring to fig. 1 and 2, the rear end cover 41 is detachably connected with a first flange 416, a sealing gasket can be added between the first flange 416 and the rear end cover 41, the sealing performance between the first flange 416 and the rear end cover 41 is improved, the casing 6 is detachably connected with a second flange 61, a sealing gasket can be added between the second flange 61 and the casing 6, the sealing performance between the second flange 61 and the casing 6 is improved, and a bellows 62 is connected between the first flange 416 and the second flange 61.

The first flange 416 is provided with a plurality of fixing lugs 417, the fixing lugs 417 are provided with fixing holes, the second flange 61 is connected with a screw 63 in a threaded manner, the screw 63 penetrates through the fixing holes and is connected with two fixing nuts 64 in a threaded manner, an expansion joint structure is formed among the corrugated pipe 62, the first flange 416, the second flange 61, the fixing lugs 417, the fixing holes, the screw 63 and the fixing nuts 64, and the expansion joint structure is utilized to absorb the dimensional change of the cross direction of the south of the patient due to expansion caused by heat, contraction caused by cold and the like.

The angle steel 11 is detachably connected between the shell 6 and the frame body 1, and is detachably connected through bolts, so that the vibration reduction effect is achieved, and the disassembly and the assembly are convenient.

The first channel steel 12 is fixedly connected to the frame body 1, the second channel steel 65 is fixedly connected to the machine shell 6, the first channel steel 12 and the second channel steel 65 are detachably connected, a gap is reserved between the first channel steel 12 and the second channel steel 65, the gap can play a role in reducing the influence of thermal expansion, and a certain space is provided for thermal expansion.

Referring to fig. 1, a plurality of reinforcing ribs 66 are welded on the rear side of the casing 6, the reinforcing ribs 66 comprise a transverse section and a vertical section, the transverse section and the vertical section are all provided with a plurality of reinforcing ribs, and the transverse section and the adjacent vertical section are connected, so that the rigidity of the rear side of the casing 6 can be increased, and the fan is not easy to shake and deform at high temperature during operation.

Referring to fig. 3, an air inlet shell 67 is welded on the casing 6, an air inlet and an air outlet are formed in the casing 6, the air inlet shell 67 is welded on the air inlet, air inlet is facilitated, and air leakage between the air inlet shell and the casing 6 can be reduced in a welding mode, so that the sealing performance is better.

The above is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that modifications and adaptations to the present utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims

1. A zero leakage fan, characterized in that: including support body (1) and set up in motor (2) on support body (1), the output of motor (2) can be dismantled and be connected with main shaft (3), be provided with bearing box (4) on main shaft (3), main shaft (3) deviate from one end fixedly connected with impeller (5) of motor (2), can dismantle on support body (1) and be connected with casing (6), impeller (5) are located in casing (6), bearing box (4) include rear end cap (41), rear end cap (41) with be provided with labyrinth seal groove (411) between main shaft (3), air groove (412) have been seted up on rear end cap (41), the intercommunication has trachea (413) on air groove (412), air groove (412) are located labyrinth seal groove (411) deviate from one side of impeller (5).

2. The zero leakage blower of claim 1, wherein: a cooling groove (414) is formed in the rear end cover (41), and two cooling water pipes (415) are communicated with the cooling groove (414).

3. The zero leakage blower of claim 1, wherein: the bearing box (4) further comprises a box body (42), the box body (42) is fixedly connected with the rear end cover (41), and an oil filling hole (421) is formed in the box body (42).

4. A zero leakage blower according to claim 3, wherein: the bearing box (4) further comprises a front end cover (43), the front end cover (43) is fixedly connected with the box body (42), two framework seals (431) are arranged between the front end cover (43) and the main shaft (3), oil injection rings (432) are arranged between the two framework seals (431), and the oil injection rings (432) are connected with the oil injection pipes (433).

5. The zero leakage blower of claim 1, wherein: the novel solar cell module is characterized in that a first flange (416) is detachably connected to the rear end cover (41), a second flange (61) is detachably connected to the casing (6), and a corrugated pipe (62) is connected between the first flange (416) and the second flange (61).

6. The zero leakage blower of claim 5, wherein: the first flange (416) is provided with a plurality of fixing lugs (417), the fixing lugs (417) are provided with fixing holes, the second flange (61) is connected with a screw (63) in a threaded manner, and the screw (63) penetrates through the fixing holes and is connected with two fixing nuts (64) in a threaded manner.

7. The zero leakage blower of claim 1, wherein: an angle iron (11) is detachably connected between the shell (6) and the frame body (1).

8. The zero leakage blower of claim 1, wherein: the novel frame comprises a frame body (1), and is characterized in that a first channel steel (12) is fixedly connected to the frame body (1), a second channel steel (65) is fixedly connected to the machine shell (6), and the first channel steel (12) and the second channel steel (65) are detachably connected and leave a gap.

9. The zero leakage blower of claim 1, wherein: a plurality of reinforcing ribs (66) are welded on the rear side of the shell (6).

10. The zero leakage blower of claim 1, wherein: an air inlet shell (67) is welded on the shell (6).