CN215566831U - Novel sealing combination structure of fan - Google Patents
Novel sealing combination structure of fan Download PDFInfo
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- CN215566831U CN215566831U CN202121407849.2U CN202121407849U CN215566831U CN 215566831 U CN215566831 U CN 215566831U CN 202121407849 U CN202121407849 U CN 202121407849U CN 215566831 U CN215566831 U CN 215566831U
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Abstract
A sealing combination structure of a novel fan comprises a negative pressure diversion hole and a composite sealing assembly; the composite sealing assembly comprises a sealing ring, a sealing box and a packing cover, the sealing box, the sealing ring and the packing cover are sleeved on a main shaft of the fan, one end face of the sealing box is connected with a shell of the fan, the other end face of the sealing box is connected with the packing cover, sealing packing is arranged between the sealing box and the packing cover, and the sealing ring is arranged at the joint of the sealing box and the shell of the fan; the negative pressure flow guide hole is formed in the main shaft of the fan, and the composite sealing assembly is communicated with the air inlet of the fan through the negative pressure flow guide hole. Compared with the traditional simple sealing structure, the sealing structure has better sealing performance and small abrasion to the main shaft, and not only can seal gas, but also can effectively leak liquid, gas and liquid drops.
Description
Technical Field
The utility model belongs to the technical field of fan sealing, and particularly relates to a novel fan sealing combination structure.
Background
Along with the development and progress of the society, the environmental protection consciousness of people is enhanced, the fan industry is no exception, the environmental protection aspect requirement of the fan is higher and higher in all industries, the requirement for controlling noise pollution and gas leakage pollution is strict one day than one day, particularly the prevention of toxic and harmful gas leakage with peculiar smell is more important, and the higher requirement is provided for the sealing of the fan.
The existing similar sealing structure in the fan industry mostly adopts a simple seal and a return pipe, the return pipe generally adopts a metal software pipe or a low-carbon steel pipe welding structure, bypasses a shell and is connected to an air inlet to realize negative pressure return, and liquid or dust particles are easy to accumulate and deposit in the pipe due to an overlong path, so that the pipeline is blocked, and the return effect is influenced; the single sealing structure is far lower than the sealing effect of the composite sealing in terms of use effect.
Disclosure of Invention
In order to overcome the above disadvantages of the prior art, the present invention provides a novel sealing assembly structure for a blower, which aims to solve the problems of the prior art.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:
a novel sealing combination structure of fan includes:
the negative pressure diversion hole and the composite sealing assembly;
the composite sealing assembly comprises a sealing ring, a sealing box and a packing cover, the sealing box, the sealing ring and the packing cover are sleeved on a main shaft of the fan, one end face of the sealing box is connected with a shell of the fan, the other end face of the sealing box is connected with the packing cover, sealing packing is arranged between the sealing box and the packing cover, and the sealing ring is arranged at the joint of the sealing box and the shell of the fan;
the negative pressure flow guide hole is formed in the main shaft of the fan, and the composite sealing assembly is communicated with the air inlet of the fan through the negative pressure flow guide hole.
Preferably, the sealing box comprises a head sealing unit and a flange plate, and the head sealing unit and the flange plate are integrally manufactured.
Preferably, the flange plate is connected with the casing of the blower through a bolt member, and the head sealing unit is connected with the packing cover through a bolt member.
Preferably, the head sealing unit comprises a sealing cavity for placing the sealing packing, and one end of the packing cover is in sliding fit with the sealing cavity.
Preferably, an annular groove is formed in the end face, facing the shell of the fan, of the flange plate, and an O-shaped ring is arranged in the annular groove.
Preferably, the sealing box is provided with a pressure expansion cavity, the pressure expansion cavity is arranged along the outer wall surface of the main shaft of the fan in a surrounding mode, and the pressure expansion cavity is communicated with the negative pressure flow guide hole.
Preferably, the negative pressure flow guide hole includes a radial flow guide hole and an axial flow guide hole, wherein the radial flow guide hole is arranged along a radial direction of a main shaft of the fan, the axial flow guide hole is arranged along an axial direction of the main shaft of the fan, one port of the radial flow guide hole is arranged on an outer wall surface of the main shaft of the fan and is located in the diffusion cavity, the other end of the radial flow guide hole is communicated with one end of the axial flow guide hole, and the other port of the axial flow guide hole is located on an axial end surface of the main shaft of the fan and is communicated with an air inlet of the fan.
Preferably, the sealing filler is a black tetrafluoro packing ring.
Preferably, the number of the black tetrafluoro packing rings is two or more than two and is sleeved on the main shaft of the fan, and the adjacent black tetrafluoro packing rings are tightly attached to each other.
Preferably, the sealing ring is a rubber sealing ring.
Compared with the prior art, the utility model has the beneficial effects that:
compared with the traditional simple sealing structure, the novel sealing combination structure of the fan provided by the utility model has the advantages of better sealing performance, small abrasion to the main shaft, and capability of sealing gas and effectively preventing liquid and gas and liquid drops from leaking and leaking. The principle is that a composite sealing blocking and main shaft backflow mode is adopted, and composite sealing realizes that two different sealing modes are combined on the same sealing body and are mutually supplemented; the route that the main shaft backward flow can make the backward flow through negative pressure water conservancy diversion hole is straighter, shorter, has realized the shortest of backward flow route, simultaneously because the distance of backward flow export apart from the impeller import is closer, the static pressure of backward flow department is higher, and suction is bigger, just so can effectually prevent the jam of backward flow route, improves backward flow efficiency, makes sealing performance better.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic view of the general construction of the seal of the present invention;
FIG. 2 is a schematic illustration of a detailed construction of the composite seal assembly of the present invention;
description of reference numerals:
1-sealing ring, 2-sealing box, 3-packing cover, 4-main shaft, 5-sealing packing, 6-shell, 7-O-shaped ring, 8-pressure expanding cavity, 9-radial guide hole, 10-axial guide hole and 11-impeller.
Detailed Description
In order to make the technical problems solved, technical solutions adopted, and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention are described in further detail below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Referring to fig. 1 to 2, an embodiment of the present invention provides a sealing combination structure of a novel fan, including:
the negative pressure diversion hole and the composite sealing assembly;
the composite sealing assembly comprises a sealing ring 1, a sealing box 2 and a packing cover 3, the sealing box 2, the sealing ring 1 and the packing cover 3 are sleeved on a main shaft 4 of the fan, one end face of the sealing box 2 is connected with a shell 6 of the fan, the other end face of the sealing box 2 is connected with the packing cover 3, a sealing packing 5 is arranged between the sealing box and the packing cover 3, and the sealing ring 1 is arranged at the joint of the sealing box 2 and the shell 6 of the fan;
the negative pressure flow guide hole is formed in the main shaft 4 of the fan, and the composite sealing assembly is communicated with the air inlet of the fan through the negative pressure flow guide hole.
The novel sealing combination structure of the fan adopts a mode of composite sealing block and main shaft 4 backflow, and composite sealing realizes the combination of two different sealing modes on the same sealing body, namely a sealing ring 1 is adopted as a front sealing structure, a filled sealing filler 5 is adopted as a rear sealing structure, and the two sealing modes are mutually supplemented; the backflow path of the main shaft 4 can be straighter and shorter through the negative pressure flow guide holes, and the shortest backflow path is realized.
Specifically, the sealing box 2 comprises a head sealing unit and a flange plate, wherein the head sealing unit and the flange plate are integrally manufactured.
Specifically, the flange plate is connected with the casing 6 of the fan through a bolt member, and the head sealing unit is connected with the packing cover 3 through a bolt member.
Specifically, the head sealing unit comprises a sealing cavity for placing the sealing filler 5, and one end of the filler cover 3 is in sliding fit with the sealing cavity.
By adopting the structure, the size of the sealing cavity is adjusted by adjusting the relative position of one end of the packing cover 3 and the sealing cavity and then fixedly connecting the end of the packing cover with the sealing cavity through the bolt piece, so that the sealing packing 5 can be tightly arranged in the sealing cavity.
Specifically, an annular groove is formed in the end face, facing the shell 6 of the fan, of the flange plate, and an O-shaped ring 7 is arranged in the annular groove.
Specifically, the sealing box 2 is provided with a pressure expansion cavity 8, the pressure expansion cavity 8 is arranged along the outer wall surface of the main shaft 4 of the fan in a surrounding mode, and the pressure expansion cavity 8 is communicated with the negative pressure flow guide hole. The pressure expansion cavity 8 is arranged between the front sealing structure and the rear sealing structure, so that the flow rate can be reduced, the static pressure can be increased, and the backflow of the negative pressure diversion hole is facilitated.
Specifically, the negative pressure flow guide hole includes a radial flow guide hole 9 and an axial flow guide hole 10, wherein the radial flow guide hole 9 is disposed along a radial direction of the main shaft 4 of the fan, the axial flow guide hole 10 is disposed along an axial direction of the main shaft 4 of the fan, a port of the radial flow guide hole 9 is disposed on an outer wall surface of the main shaft 4 of the fan and is located in the pressure expansion cavity 8, the other end of the radial flow guide hole 9 is communicated with one end of the axial flow guide hole 10, and another port of the axial flow guide hole 10 is located on an axial end surface of the main shaft 4 of the fan and is communicated with an air inlet of the fan.
Specifically, the sealing filler 5 is a black tetrafluoro packing ring. Compared with other sealing materials, the black PTFE has stronger plasticity and better self-lubricating property, can adjust the tightness between the packing and the main shaft 4 according to the requirement, and can also be conveniently replaced due to the abrasion or deformation failure of the packing.
Specifically, the number of the black tetrafluoro packing rings is two or more than two and is sleeved on the main shaft 4 of the fan, and the adjacent black tetrafluoro packing rings are tightly attached to each other.
Specifically, the sealing ring 1 is a rubber sealing ring 1.
Compared with the prior art, the utility model has the beneficial effects that:
compared with the traditional simple sealing structure, the novel sealing combination structure of the fan provided by the utility model has the advantages that the sealing performance is better, the abrasion to the main shaft 4 is small, the air can be sealed, and the leakage and seepage of liquid, gas and liquid drops can be effectively realized. The principle is that a mode of composite sealing block and main shaft 4 backflow is adopted, and composite sealing realizes that two different sealing modes are combined on the same sealing body and are mutually supplemented; the route that 4 modes of main shaft backward flow pass through the structure in negative pressure water conservancy diversion hole can make the backward flow is straighter, shorter, has realized the shortest of backward flow route, simultaneously because the distance of backward flow export apart from 11 imports of impeller is nearer, and the static pressure of backward flow department is higher, and suction is bigger, just so can effectually prevent the jam in backward flow route, improves backward flow efficiency, makes sealing performance better.
In the description herein, it is to be understood that the terms "upper," "lower," "left," "right," and the like are used in an orientation or positional relationship merely for convenience in description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, configuration, and operation in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.
In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.
The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the utility model and should not be construed in any way as limiting the scope of the utility model. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.
Claims (10)
1. The utility model provides a novel sealed integrated configuration of fan which characterized in that includes:
the negative pressure diversion hole and the composite sealing assembly;
the composite sealing assembly comprises a sealing ring, a sealing box and a packing cover, the sealing box, the sealing ring and the packing cover are sleeved on a main shaft of the fan, one end face of the sealing box is connected with a shell of the fan, the other end face of the sealing box is connected with the packing cover, sealing packing is arranged between the sealing box and the packing cover, and the sealing ring is arranged at the joint of the sealing box and the shell of the fan;
the negative pressure flow guide hole is formed in the main shaft of the fan, and the composite sealing assembly is communicated with the air inlet of the fan through the negative pressure flow guide hole.
2. The sealing combination structure of the novel blower fan as claimed in claim 1, wherein the sealing box comprises a head sealing unit and a flange plate, and the head sealing unit and the flange plate are integrally formed.
3. The sealing combination structure of the novel fan as claimed in claim 2, wherein the flange plate is connected with the casing of the fan through bolt pieces, and the head sealing unit is connected with the packing cover through bolt pieces.
4. The sealing combination structure of the novel blower fan as claimed in claim 3, wherein the head sealing unit comprises a sealing cavity for placing the sealing packing, and one end of the packing cover is in sliding fit with the sealing cavity.
5. The sealing combination structure of the novel fan as claimed in claim 3, wherein the flange plate is provided with an annular groove at an end surface facing the housing of the fan, and the annular groove is internally provided with an O-shaped ring.
6. The sealing combination structure of the novel fan as claimed in claim 1, wherein the sealing box is provided with a pressure expansion cavity, the pressure expansion cavity is arranged around the outer wall surface of the main shaft of the fan, and the pressure expansion cavity is communicated with the negative pressure diversion hole.
7. The sealing assembly structure of a novel fan according to claim 6, wherein the negative pressure diversion hole includes a radial diversion hole and an axial diversion hole, wherein the radial diversion hole is disposed along a radial direction of a main shaft of the fan, the axial diversion hole is disposed along an axial direction of the main shaft of the fan, a port of the radial diversion hole is disposed on an outer wall surface of the main shaft of the fan and is located in the diffusion chamber, another port of the radial diversion hole is communicated with one end of the axial diversion hole, and another port of the axial diversion hole is located on an axial end surface of the main shaft of the fan and is communicated with an air inlet of the fan.
8. The sealing combination structure of the novel fan as claimed in claim 1, wherein the sealing filler is a black tetrafluoro packing ring.
9. The novel fan sealing combination structure of claim 8, wherein the number of the black tetrafluoro disk root rings is two or more, the black tetrafluoro disk root rings are sleeved on the main shaft of the fan, and the adjacent black tetrafluoro disk root rings are tightly attached to each other.
10. The sealing combination structure of the novel blower according to any one of claims 1 to 9, wherein the sealing ring is a rubber sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121407849.2U CN215566831U (en) | 2021-06-23 | 2021-06-23 | Novel sealing combination structure of fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121407849.2U CN215566831U (en) | 2021-06-23 | 2021-06-23 | Novel sealing combination structure of fan |
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| Publication Number | Publication Date |
|---|---|
| CN215566831U true CN215566831U (en) | 2022-01-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121407849.2U Active CN215566831U (en) | 2021-06-23 | 2021-06-23 | Novel sealing combination structure of fan |
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| Country | Link |
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| CN (1) | CN215566831U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117823449A (en) * | 2023-12-28 | 2024-04-05 | 广东肇庆德通有限公司 | Draught fan sealing structure containing tar working condition and treatment system thereof |
| CN117823449B (en) * | 2023-12-28 | 2024-06-07 | 广东肇庆德通有限公司 | Draught fan sealing structure containing tar working condition and treatment system thereof |
-
2021
- 2021-06-23 CN CN202121407849.2U patent/CN215566831U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117823449A (en) * | 2023-12-28 | 2024-04-05 | 广东肇庆德通有限公司 | Draught fan sealing structure containing tar working condition and treatment system thereof |
| CN117823449B (en) * | 2023-12-28 | 2024-06-07 | 广东肇庆德通有限公司 | Draught fan sealing structure containing tar working condition and treatment system thereof |
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