CN220566284U - Nonmetal tooth density sealing device - Google Patents
Nonmetal tooth density sealing device Download PDFInfo
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- CN220566284U CN220566284U CN202321963308.7U CN202321963308U CN220566284U CN 220566284 U CN220566284 U CN 220566284U CN 202321963308 U CN202321963308 U CN 202321963308U CN 220566284 U CN220566284 U CN 220566284U
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- 238000007789 sealing Methods 0.000 title claims abstract description 191
- 229910052755 nonmetal Inorganic materials 0.000 title claims abstract description 9
- 230000002093 peripheral effect Effects 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 230000006872 improvement Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 6
- 239000010410 layer Substances 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Sealing Devices (AREA)
Abstract
The utility model discloses a nonmetal tooth thinning sealing device which comprises an equipment shell, a fixing piece, a bearing and a sealing structure, wherein the sealing structure is detachably fixed with the equipment shell through the fixing piece, and the sealing structure is detachably arranged on the outer surface of the bearing in a surrounding mode; the sealing structure comprises at least one sealing element, the inner peripheral wall of the sealing element comprises a plurality of sealing teeth which are arranged side by side along the axial direction of the bearing, the sealing teeth are in interference fit with the bearing, and the sealing teeth and the bearing are ground to form a sealing gap after rotating. The nonmetallic tooth sparse sealing device has the advantages that a stable sealing gap can be formed between a nonmetallic tooth sparse sealing piece and a bearing, and the bearing cannot be worn.
Description
Technical Field
The utility model relates to the technical field of sealing devices, in particular to a nonmetal tooth lyophobic sealing device.
Background
The rotor and stator of the fan rotate at a high speed while the other is stationary with a certain gap therebetween, so that gas leakage occurs, and a sealing device is required to reduce or prevent the gas leakage. The sealing means employed in fans are typically comb-like sealing means arranged in an axial direction.
The existing light metal material teeth are used for sparse sealing, the size and the weight are generally larger, the dynamic seal fit clearance is fixed from the beginning of design, the dynamic seal fit clearance is limited by materials and machining precision, the clearance cannot be smaller, the leakage quantity cannot be as low as possible, a stable seal clearance cannot be formed, in order to achieve a good sealing effect, the number of teeth and the tooth pitch are required to be increased, the number of teeth of the comb teeth is increased, the axial size occupied by the axial seal is increased, meanwhile, the cost is higher, and the design and machining process are complex. When installed improperly, there may also be some interference with the bearings and wear.
Therefore, the non-metal tooth density sealing device is provided for overcoming the defects of the prior art.
Disclosure of Invention
The utility model provides a non-metal tooth sparse and dense sealing device, which aims to solve the problem that a stable sealing gap cannot be formed between a tooth sparse seal made of a metal material and a bearing, and even the bearing is worn.
The utility model adopts the following technical scheme:
the nonmetal tooth thinning sealing device comprises an equipment shell, a fixing piece, a bearing and a sealing structure, wherein the sealing structure is detachably fixed with the equipment shell through the fixing piece, and the sealing structure is detachably arranged on the outer surface of the bearing in a surrounding mode;
the sealing structure comprises at least one sealing element, the inner peripheral wall of the sealing element comprises a plurality of sealing teeth which are arranged side by side along the axial direction of the bearing, the sealing teeth are in interference fit with the bearing, and the sealing teeth are in running-in with the bearing to form a sealing gap after rotating.
Further as the improvement of the technical scheme of the utility model, the fluid is decelerated step by step and depressurized step by step between a plurality of layers of the sealing gaps.
Further as an improvement of the technical scheme of the utility model, the cross section of the sealing gap is a right triangle, and the right-angle side of the right triangle is positioned close to the outer side of the equipment shell.
Further as an improvement of the technical scheme of the utility model, the sealing element comprises at least one section of sealing main body connected end to end, and the joint of the sealing main bodies is provided with a self-locking structure.
Further as an improvement of the technical scheme of the utility model, the self-locking structure comprises a plurality of dovetail heads and a plurality of plug connectors matched with the dovetail heads, and the sealing main body is spliced with the plug connectors through the dovetail heads to form a sealing piece.
Further as an improvement of the technical scheme of the utility model, the self-locking structure further comprises a sealing strip which is arranged around the dovetail head, and the length and the width of the sealing strip are the same as those of the dovetail head;
the sealing strip is sheet-shaped.
Further as an improvement of the technical scheme of the utility model, the device further comprises a cover plate for pressing the sealing element, and the sealing element and the cover plate are positioned on the outer side of the device shell.
Further as an improvement of the technical scheme of the utility model, the fixing piece comprises a connecting bolt and a nut in threaded connection with the connecting bolt.
Further as an improvement of the technical scheme of the utility model, one end of the sealing element, which is far away from the sealing teeth, is provided with a through hole for the connecting bolt to penetrate.
Further as an improvement of the technical scheme of the utility model, the sealing element is made of PTFE material.
Compared with the prior art, the utility model has the beneficial effects that:
according to the nonmetal tooth thinning sealing device, the sealing structure is arranged and detachably fixed with the equipment shell through the fixing piece, and the sealing structure is detachably arranged on the outer surface of the bearing in a surrounding mode; the sealing structure comprises at least one sealing element, the inner peripheral wall of the sealing element comprises a plurality of sealing teeth which are arranged side by side along the axial direction of the bearing, the sealing teeth are in interference fit with the bearing, a gap between the sealing teeth and the bearing is not required to be reserved in advance through interference fit and installation, and the sealing teeth can form a stable sealing gap by means of self rotation and bearing running-in. Meanwhile, the sealing element is made of PTFE material, so that the self-lubricating property of the sealing element material is good, and the shaft parts at the matching position cannot be abraded. The nonmetallic tooth sparse sealing device has the characteristics that a stable sealing gap can be formed between a nonmetallic tooth sparse sealing piece and a bearing, and the bearing cannot be worn.
Drawings
The technology of the present utility model will be described in further detail below with reference to the attached drawings and detailed description:
FIG. 1 is a schematic cross-sectional view of a double seal in a nonmetallic tooth sparse seal apparatus;
FIG. 2 is a schematic cross-sectional view of a single layer seal in a nonmetallic tooth evacuation sealing device;
FIG. 3 is a schematic cross-sectional view of a seal tooth of a single layer seal in a nonmetallic tooth evacuation sealing device;
FIG. 4 is a schematic cross-sectional view of a seal tooth of a double seal in a nonmetallic tooth sparse seal apparatus;
FIG. 5 is a schematic illustration of a one-sided open unitary closure seal body construction in a nonmetallic tooth sparse seal apparatus;
FIG. 6 is a schematic illustration of a one-sided open-ended open seal body construction in a nonmetallic tooth sparse seal apparatus;
FIG. 7 is a schematic illustration of a two-stage closure seal body configuration for a nonmetallic tooth sparse seal apparatus;
FIG. 8 is a schematic illustration of a two-stage open seal body configuration in a nonmetallic tooth sparse seal.
Reference numerals:
1. an equipment housing;
2. a fixing member; 21. a connecting bolt; 22. a nut;
3. a bearing;
4. a seal; 41. sealing teeth; 42. sealing the gap; 43. a sealing body; 44. a self-locking structure; 45. a dovetail head; 46. a plug;
5. and a cover plate.
Detailed Description
The conception, specific structure, and technical effects produced by the present utility model will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, aspects, and effects of the present utility model. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The same reference numbers will be used throughout the drawings to refer to the same or like parts.
A nonmetallic tooth lyophobic sealing device, referring to fig. 1 to 8, comprises a device shell 1, a fixing piece 2, a bearing 3 and a sealing structure;
in one embodiment, the sealing structure is detachably fixed with the equipment shell 1 through the fixing piece 2, the fixing piece 2 penetrates through the equipment shell 1 and the sealing structure to detachably fix the sealing structure on the outer side of the equipment shell 1, and the sealing structure is detachably arranged on the outer surface of the bearing 3 in a surrounding mode; the sealing device further comprises a cover plate 5 for pressing the sealing member 4, the sealing member 4 and the cover plate 5 are located on the outer side of the equipment housing 1, the outer side of the equipment housing 1 is located on the right side of the equipment housing 1, and the inner side of the equipment housing 1 is located on the left side of the equipment housing 1 as shown in fig. 1. The sealing element 4 can be tightly pressed on the outer side of the equipment shell 1 through the cover plate 5, so that the sealing element 4 is prevented from falling off in the working process of the bearing 3, and in addition, the sealing element 4 is fixedly connected with the equipment shell 1 through the connecting bolt 21 and the nut 22, and the cover plate 5 is arranged on the outer side of the sealing element 4, so that the sealing element 4 can be effectively protected from being crushed by the nut 22.
In one embodiment, referring to fig. 2 and 3, the seal 1 may be used alone when the sealing device has a low requirement for sealing performance; referring to fig. 1 and 4, when the sealing device has high requirement on sealing performance, multiple layers can be combined for use, each layer has respective mounting reference, and the influence of mechanical mounting precision on the sealing performance of the sealing element 1 can be effectively compensated.
In one embodiment, the sealing structure comprises at least one sealing element 1, the inner peripheral wall of the sealing element 1 comprises a plurality of sealing teeth 41 which are arranged side by side along the axial direction of the bearing 3, the sealing teeth 41 are in interference fit with the bearing 3, and the sealing teeth 41 are in running-in with the bearing 3 to form a sealing gap 42 after rotating. When the fluid flows through the sealed matching part, due to the existence of the sealing teeth 41, the fluid is gradually decelerated and decompressed among the layers of sealing gaps 42, so that the sealing purpose is achieved, the cross section of the sealing gaps 42 is right triangle, and the right angle side of the right triangle is positioned at the outer side close to the equipment shell 1.
Wherein, through setting up the seal structure, the mounting 2 runs through the apparatus shell 1 and seal structure and fixes the seal structure on the outside of the apparatus shell 1 removably, the seal structure is enclosed and established on the external surface of the bearing 3 removably; the sealing structure comprises at least one sealing element 1, the inner peripheral wall of the sealing element 1 comprises a plurality of sealing teeth 41 which are arranged side by side along the axial direction of a bearing 3, the sealing teeth 41 are in interference fit with the bearing 3, gaps between the sealing teeth 41 and the bearing 3 do not need to be reserved in advance through interference fit and installation, the sealing teeth 41 can form stable sealing gaps 42 by means of self rotation and running-in of the bearing 3, the size of the sealing gaps 42 is only related to machining and assembly precision of parts, and therefore the minimization of the sealing gaps 42 is achieved, the change of sealing precision caused by manual installation is avoided, and the influence on the sealing performance is caused. Meanwhile, the sealing element 1 is made of PTFE material, the self-lubricating property of the sealing element 1 material is good, and the shaft parts at the matching position cannot be abraded. The nonmetallic tooth sparse sealing device has the characteristics that a stable sealing gap 42 can be formed between a nonmetallic tooth sparse sealing piece and the bearing 3, and the bearing 3 cannot be worn.
In one embodiment, the sealing element 4 comprises at least one section of sealing main body 43 connected end to end, the connecting part of the sealing main body 43 is provided with a self-locking structure 44, the self-locking structure 44 comprises a plurality of dovetail heads 45 and a plurality of plug connectors 46 matched with the dovetail heads 45, the sealing main body 43 is spliced with the plug connectors 46 through the dovetail heads 45 to form the sealing element 4, and the sealing element is fixed on the bearing 3 after being assembled by self-locking the dovetail heads 45 and the plug connectors 46 into a whole, so that the self-clearance is small, and the sealing effect is good. The self-locking structure 44 further comprises a sealing strip which is arranged around the dovetail head 45, and the length and the width of the sealing strip are the same as those of the dovetail head 45; the sealing strip is sheet-shaped.
In one embodiment, referring to fig. 5 and 6, when the sealing element 4 is designed as a single-side opening integral type, when the sealing element 4 is formed by connecting one sealing main body 43, dovetail heads 45 and plug connectors 46 are respectively arranged at the front end and the rear end of the sealing main body 43, when the sealing element is installed, two sides of the opening are twisted to a certain distance, after the inner ring volume of the sealing element 4 is enlarged, the sealing main body 43 is sleeved on the bearing 3, and then the sealing main body is self-locked through the dovetail heads 45 and the plug connectors 46, thereby completing the installation. After installation, the dovetail head 45 and the plug 46 are self-locked into a whole and then fixed on the bearing 3, and the gap between the dovetail head 45 and the plug 46 is very small, and as the connection mode of the dovetail head 45 and the plug 46 is designed as an inclined opening, the dovetail head 45 is also provided with a sealing strip to increase the sealing degree, the self-locking capability is stronger, and the sealing effect is good
In one embodiment, referring to fig. 7 and 8, when the sealing member 4 is of a two-stage design, the sealing member 4 is formed by connecting two sealing bodies 43, and the two sealing bodies 43 are easily installed and replaced by a self-locking structure 44, unlike the integral sealing member 4, and the two sealing bodies 43 can be self-locked by a dovetail head 45 and a plug 46 only after being respectively installed on the bearing 3. After installation, the dovetail head 45 and the plug 46 are self-locked into a whole and then fixed on the bearing 3, the gap between the dovetail head 45 and the plug 46 is very small, and as the connection mode of the dovetail head 45 and the plug 46 is designed as an inclined opening, the dovetail head 45 is also provided with a sealing strip to increase the tightness, the self-locking capability is stronger, and the sealing effect is good.
In one embodiment, the sealing device further comprises a cover plate 5 for pressing the sealing element 4, the sealing element 4 and the cover plate 5 are located on the outer side of the equipment shell 1, the fixing element 2 comprises a connecting bolt 21 and a nut 22 in threaded connection with the connecting bolt 21, and a through hole for the connecting bolt 21 to penetrate is formed in one end, away from the sealing tooth 41, of the sealing element 4.
Other matters of a non-metallic tooth lyophobic seal device of the present utility model are referred to in the prior art, and are not described herein.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
The above is only a preferred embodiment of the present utility model, and is not limited in any way, so any modification, equivalent variation and modification made to the above embodiment according to the technical substance of the present utility model still fall within the scope of the technical solution of the present utility model.
Claims (10)
1. The nonmetal tooth density sealing device is characterized by comprising an equipment shell, a fixing piece, a bearing and a sealing structure, wherein the sealing structure is detachably fixed with the equipment shell through the fixing piece, and the sealing structure is detachably arranged on the outer surface of the bearing in a surrounding mode;
the sealing structure comprises at least one sealing element, the inner peripheral wall of the sealing element comprises a plurality of sealing teeth which are arranged side by side along the axial direction of the bearing, the sealing teeth are in interference fit with the bearing, and the sealing teeth are in running-in with the bearing to form a sealing gap after rotating.
2. The nonmetallic tooth evacuation sealing device of claim 1, wherein: the fluid is gradually decelerated and gradually decompressed among the sealing gaps of the layers.
3. The nonmetallic tooth evacuation sealing device of claim 1 or 2, wherein: the cross section of the sealing gap is a right triangle, and the right-angle side of the right triangle is positioned close to the outer side of the equipment shell.
4. The nonmetallic tooth evacuation sealing device of claim 1, wherein: the sealing piece comprises at least one section of sealing main body connected end to end, and a self-locking structure is arranged at the joint of the sealing main bodies.
5. The nonmetallic tooth evacuation sealing device of claim 4, wherein: the self-locking structure comprises a plurality of dovetail heads and a plurality of plug connectors matched with the dovetail heads, and the sealing main body is spliced with the plug connectors to form a sealing piece through the dovetail heads.
6. The nonmetallic tooth evacuation sealing device of claim 5, wherein: the self-locking structure further comprises a sealing strip which is arranged around the dovetail head, and the length and the width of the sealing strip are the same as those of the dovetail head;
the sealing strip is sheet-shaped.
7. The nonmetallic tooth evacuation sealing device of claim 1, wherein: the sealing device further comprises a cover plate for pressing the sealing element, and the sealing element and the cover plate are positioned on the outer side of the equipment shell.
8. The nonmetallic tooth evacuation sealing device of claim 1, wherein: the fixing piece comprises a connecting bolt and a nut in threaded connection with the connecting bolt.
9. The nonmetallic tooth evacuation sealing device of claim 8, wherein: one end of the sealing piece, which is far away from the sealing teeth, is provided with a through hole for the connecting bolt to penetrate.
10. The nonmetallic tooth evacuation sealing device of claim 1, wherein: the sealing element is made of PTFE material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321963308.7U CN220566284U (en) | 2023-07-25 | 2023-07-25 | Nonmetal tooth density sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321963308.7U CN220566284U (en) | 2023-07-25 | 2023-07-25 | Nonmetal tooth density sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220566284U true CN220566284U (en) | 2024-03-08 |
Family
ID=90087696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321963308.7U Active CN220566284U (en) | 2023-07-25 | 2023-07-25 | Nonmetal tooth density sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220566284U (en) |
-
2023
- 2023-07-25 CN CN202321963308.7U patent/CN220566284U/en active Active
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