Fan and oil tank gland thereof

Abstract

The utility model relates to the technical field of Roots blowers, and provides a blower and an oil tank gland thereof. The oil tank gland for the draught fan comprises a first part and a second part arranged on one side of the first part, the second part is formed by extending perpendicular to one side of the first part, the first part is in a circular ring shape, a through hole is formed in the center of the first part, a draught fan main shaft of the draught fan can penetrate through the through hole, and the through hole is communicated with the first part. An O-shaped ring chamber is formed in the position, adjacent to the outer side of the second part, of the first part, the side, facing the second part, of the first part is sunken to form the O-shaped ring chamber, and an O-shaped ring can be installed in the O-shaped ring chamber; the second part is in a hollow column shape with two open ends, the inner side of the second part is provided with a stepped hole, the inner side, adjacent to the first part, of the second part is provided with an oil separation ring chamber, and the inner side, adjacent to one side, away from the first part, of the oil separation ring chamber, of the second part is arranged in a framework oil seal chamber; and the second part is also provided with an oil return passage.

Description

Technical Field

[0001] The utility model relates to the technical field of Roots blowers, in particular to a blower and an oil tank gland thereof. Background Art

[0002] Roots blower is a positive displacement blower, including a casing, wall panels, impeller, fan main shaft, main oil tank, auxiliary oil tank and oil tank gland, in which the oil tank gland is installed between the fan main shaft and the auxiliary oil tank in a sealed manner, which leads to two leakage points in the oil tank gland: the leakage point between the inner hole of the skeleton oil seal and the outer side of the fan main shaft, and the leakage point between the outer side of the oil tank gland and the inner hole of the auxiliary oil tank. In addition, when the double oil tank blower is running, when the lubricating oil in the auxiliary oil tank is splashed by the rotation of the oil slinger, a small amount of lubricating oil will enter the gland. After long-term operation, the lubricating oil may leak through the inner hole of the skeleton oil seal and the outer side of the fan main shaft. Utility Model Content

[0003] In view of this, the utility model provides an oil tank gland for a fan that can solve or at least alleviate the above-mentioned problem, and a fan including the oil tank gland, so as to isolate the leaked lubricating oil and completely prevent the lubricating oil from leaking to the outside of the fan.

[0004] The utility model provides an oil tank gland for a fan, comprising a first part and a second part arranged on one side of the first part, wherein the second part extends perpendicularly to one side of the first part, the first part is in a circular ring shape, and a through hole is provided in the center thereof for the fan main shaft of the fan to pass through, an O-ring chamber is provided at a position where the first part is adjacent to the outer side of the second part, the O-ring chamber is recessed from the first part toward one side of the second part, and an O-ring can be installed in the O-ring chamber; the second part is in a hollow column shape with openings at both ends, the inner side of the second part is arranged as a step hole, the inner side of the second part adjacent to the first part is arranged as an oil separator ring chamber, and the inner side of the second part adjacent to the oil separator ring chamber away from the first part is arranged in a skeleton oil seal chamber; the second part is also provided with an oil return passage.

[0005] In some embodiments, the diameter of the oil separator chamber is smaller than the diameter of the skeleton oil seal chamber.

[0006] In some embodiments, the oil return passage penetrates a circumferential wall of the second portion in a radial direction of the second portion, and extends from an end of the second portion away from the first portion to the oil separator ring chamber in an axial direction of the second portion.

[0007] In some embodiments, a skeleton oil seal can be installed in the skeleton oil seal chamber.

[0008] In some embodiments, the first portion is further provided with a plurality of mounting holes, through which bolts can pass to mount the oil tank gland on the auxiliary oil tank of the fan, and the plurality of mounting holes are arranged adjacent to the O-ring chamber.

[0009] The utility model also provides a fan, comprising a casing, two wall panels respectively installed at two ends of the casing, a fan main shaft installed on the casing, an impeller installed in the casing, and a main oil tank and an auxiliary oil tank respectively installed on the outsides of the two wall panels, wherein the above-mentioned oil tank gland is installed on the side of the auxiliary oil tank away from the casing.

[0010] Compared with the prior art, the utility model has at least the following beneficial effects:

[0011] 1. The oil tank gland for the fan provided by the utility model can isolate the leaking lubricating oil and completely prevent the lubricating oil from leaking to the outside of the fan.

[0012] 2. The oil tank gland of the utility model has two static seals: a static seal skeleton oil seal is set in the skeleton oil seal chamber, and a static seal O-ring is set in the O-ring chamber. When the double oil tank fan is running, the lubricating oil in the auxiliary oil tank is splashed by the oil-slinging plate when it rotates, and a small amount of lubricating oil will enter the inside of the oil tank gland. After a long time of operation, the lubricating oil may seep out through the skeleton oil seal chamber and the outside of the fan main shaft. Through the oil separator ring chamber, the seeping lubricating oil is isolated here and flows back to the auxiliary oil tank through the oil return passage at the bottom, completely preventing the lubricating oil from leaking to the outside of the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A cross-sectional view of a fan according to an embodiment of the utility model is shown, wherein a partial enlarged view of some components is further shown.

[0014] Figure 2 Shows Figure 1 Another cross-sectional view of the fan is shown.

[0015] Figure 3 Shows Figure 1 A plan view of a fan is shown, wherein a partial cross-sectional view is further shown.

[0016] Figure 4 Shows Figure 1 A plan view of the oil tank gland of the fan is shown.

[0017] Figure 5 Shows Figure 4 A cross-sectional view of the fuel tank gland along line AA is shown.

[0018] Explanation of the reference numerals: 200-blower; 1-oil tank gland; 11-O-ring chamber; 12-oil separator ring chamber; 13-skeleton oil seal chamber; 14-oil return passage; 111-first part; 112-second part; 113-mounting hole; 2-auxiliary oil tank; 3-blower main shaft; 4-O-ring; 5-skeleton oil seal; 6-oil throwing tray; 7-impeller; 8-casing; 9-wall panel; 10-main oil tank. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0020] It should be noted that the following detailed descriptions are all exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0021] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0022] In the present invention, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", "bottom" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present invention, and do not specifically refer to any part or element in the present invention and cannot be understood as limitations on the present invention.

[0023] In the present utility model, terms such as "fixed connection", "connected", "connection", etc. should be understood in a broad sense, indicating that it can be fixedly connected, integrally connected or detachably connected; it can be directly connected or indirectly connected through an intermediate medium. For relevant scientific research or technical personnel in this field, the specific meanings of the above terms in the present utility model can be determined according to specific circumstances, and they cannot be understood as limitations on the present utility model.

[0024] like Figures 1 to 5As shown, the fan 200 of one embodiment of the utility model comprises a casing 8, two wall panels 9 respectively mounted at both ends of the casing 8, a fan main shaft 3 mounted on the casing 8, an impeller 7 mounted in the casing 8, and a main oil tank 10 and a subsidiary oil tank 2 respectively mounted on the outsides of the two wall panels 9, wherein a tank gland 1 is mounted on the side of the subsidiary oil tank 2 facing away from the casing 8. In this embodiment, the casing 8, the wall panels 9, the main oil tank 10, the subsidiary oil tank 2, the fan main shaft 3 and the oil throwing plate 6 can adopt the existing structures in the prior art, and no detailed description is given here.

[0025] In this embodiment, the oil tank gland 1 includes a first portion 111 and a second portion 112 disposed on one side of the first portion 111, wherein the second portion 112 extends perpendicularly to one side of the first portion 111. In this embodiment, the first portion 111 is generally annular, and a through hole is provided at the center thereof for the fan main shaft 3 of the fan 200 to pass through.

[0026] In this embodiment, an O-ring chamber 11 is provided at a position where the first part 111 is adjacent to the outer side of the second part 112, and the O-ring chamber 11 is recessed from the first part 111 toward the side of the second part 112. An O-ring 4 can be installed in the O-ring chamber 11 to ensure the sealing between the first part 111 and the outer side of the auxiliary oil tank 2. The first part 111 is also provided with a plurality of mounting holes 113, through which bolts can pass to mount the oil tank gland 1 on the auxiliary oil tank 2. Preferably, the plurality of mounting holes 113 are provided adjacent to the O-ring chamber 11.

[0027] The second part 112 is generally in the shape of a hollow column with two ends open. The inner side of the second part 112 is set as a step hole, the inner side of the second part 112 adjacent to the first part 111 is set as an oil separator ring chamber 12, and the inner side of the second part 112 adjacent to the oil separator ring chamber 12 away from the first part 111 is set as a skeleton oil seal chamber 13, wherein the diameter of the oil separator ring chamber 12 is smaller than the diameter of the skeleton oil seal chamber 13. The skeleton oil seal 5 can be installed in the skeleton oil seal chamber 13.

[0028] In this embodiment, the second portion 112 of the oil tank gland 1 is further provided with an oil return passage 14. The oil return passage 14 penetrates the peripheral wall of the second portion 112 in the radial direction of the second portion 112, and extends from one end of the second portion 112 away from the first portion 111 to the oil separator ring chamber 12 in the axial direction of the second portion 112.

[0029] There are two leakage points in the existing oil tank gland: the leakage point between the skeleton oil seal chamber and the outside of the fan main shaft 3, and the leakage point between the outside of the oil seal gland and the inside of the auxiliary oil tank. The oil tank gland 1 of the utility model has two static seals: the skeleton oil seal chamber 13 is provided with a static seal skeleton oil seal 5, and the O-ring chamber 11 is provided with a static seal O-ring 4. When the double oil tank fan is running, when the lubricating oil in the auxiliary oil tank 1 rotates through the oil thrower 6 to achieve splash oil lubrication, a small amount of lubricating oil will enter the inside of the oil tank gland 1. After long-term operation, there is a possibility that the lubricating oil will seep out through the skeleton oil seal chamber 13 and the outside of the fan main shaft 3. Through the oil separator ring chamber 12, the seeping lubricating oil is isolated here and flows back to the auxiliary oil tank 2 through the oil return passage 14 at the bottom, completely preventing the lubricating oil from leaking to the outside of the fan.

[0030] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A fuel tank gland for a fan, comprising a first portion and a second portion arranged on one side of the first portion, wherein the second portion extends perpendicularly to one side of the first portion, the first portion is annular, and a through hole is provided in the center thereof for the fan main shaft of the fan to pass through, characterized in that: An O-ring chamber is provided at a position on the outer side of the first part adjacent to the second part, and the O-ring chamber is recessed from the first part toward one side of the second part, and an O-ring can be installed in the O-ring chamber; the second part is in the shape of a hollow column with openings at both ends, and the inner side of the second part is provided as a step hole, and the inner side of the second part adjacent to the first part is provided as an oil separator ring chamber, and the inner side of the second part adjacent to the oil separator ring chamber away from the first part is provided as a skeleton oil seal chamber; the second part also has an oil return passage.

2. The oil tank gland for a fan according to claim 1, characterized in that: The diameter of the oil separator ring chamber is smaller than the diameter of the skeleton oil seal chamber.

3. The oil tank gland for a fan according to claim 1, characterized in that: The oil return passage penetrates the peripheral wall of the second portion in the radial direction of the second portion, and extends from an end of the second portion away from the first portion to the oil separator chamber in the axial direction of the second portion.

4. The oil tank gland for a fan according to claim 1, characterized in that: A skeleton oil seal can be installed in the skeleton oil seal chamber.

5. The oil tank gland for a fan according to claim 1, characterized in that: The first part is also provided with a plurality of mounting holes, through which bolts can pass to mount the oil tank gland on the auxiliary oil tank of the fan, and the plurality of mounting holes are arranged adjacent to the O-ring chamber.

6. A fan, comprising a casing, two wall panels respectively mounted at two ends of the casing, a fan main shaft mounted on the casing, an impeller mounted in the casing, and a main oil tank and an auxiliary oil tank respectively mounted on the outer sides of the two wall panels, wherein an oil tank gland is mounted on a side of the auxiliary oil tank away from the casing, characterized in that: The oil tank gland is the oil tank gland for a fan according to any one of claims 1 to 5.

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