CN219045474U - Pneumatic flexible shaft end sealing device and smoke exhaust fan - Google Patents
Pneumatic flexible shaft end sealing device and smoke exhaust fan Download PDFInfo
- Publication number
- CN219045474U CN219045474U CN202223114154.2U CN202223114154U CN219045474U CN 219045474 U CN219045474 U CN 219045474U CN 202223114154 U CN202223114154 U CN 202223114154U CN 219045474 U CN219045474 U CN 219045474U
- Authority
- CN
- China
- Prior art keywords
- shaft end
- end sealing
- sealing sleeve
- sealing
- fan
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Sealing Devices (AREA)
Abstract
The utility model belongs to the technical field of shaft sealing. The utility model discloses a pneumatic flexible shaft end sealing device which comprises a shaft end sealing sleeve, a sealing cavity and a gland, wherein the shaft end sealing sleeve is matched and arranged on a fan shaft, a flange plate is arranged on the outer side of a first end part of the shaft end sealing sleeve, a limit shoulder is arranged on the inner side of the first end part of the shaft end sealing sleeve, and the flange plate is matched, adhered, sealed and fixed with a fan shell; the sealing cavity is arranged between the shaft end sealing sleeve and the fan shaft, at least one air sealing ring and at least one group of sealing filler are arranged in the sealing cavity side by side, and a high-pressure connector corresponding to the air sealing ring is arranged on the side wall of the shaft end sealing sleeve; the gland is correspondingly arranged at the second end part of the shaft end sealing sleeve, and the gland is fixedly connected with the shaft end sealing sleeve. A smoke exhaust blower is also disclosed. The utility model discloses a practicality that can improve the product greatly optimizes seal structure, improves sealed effect for the life of whole structure is longer.
Description
Technical Field
The utility model belongs to the technical field of shaft sealing, and particularly relates to a pneumatic flexible shaft end sealing device and a smoke exhaust fan.
Background
In the industrial production process, the process flue gas is conveyed by a fan, and under partial working conditions, the flue gas inevitably overflows to the environment through the shaft end of the fan due to positive pressure at the outlet of the fan, so that the field environment is severe, the problem of unorganized emission is generated, and the environment is not satisfactory.
The existing sealing method realizes shaft end sealing by pressing a sealing packing at the shaft end, but has the following problems: firstly, the packing is contacted with the shaft, but a gap is inevitably formed, and smoke still overflows through the gap; secondly, after the packing rubs with the shaft for a period of time, the gap can be increased, and the flue gas overflow situation can be aggravated.
Disclosure of Invention
The utility model aims to solve the problems and the defects, and provides a pneumatic flexible shaft end sealing device and a smoke exhaust fan, which are reasonable in structural design, can greatly improve the practicability of products, optimize a sealing structure, improve the sealing effect and prolong the service life of the whole structure.
In order to achieve the above purpose, the technical scheme adopted is as follows:
a pneumatically flexible shaft end sealing device for sealing between a fan shaft and a fan housing, comprising:
the shaft end sealing sleeve is matched and sleeved on the fan shaft, a flange is arranged on the outer side of the first end part of the shaft end sealing sleeve, a limit shoulder is arranged on the inner side of the first end part of the shaft end sealing sleeve, and the flange is matched, adhered, sealed and fixed with the fan shell;
the sealing cavity is arranged between the shaft end sealing sleeve and the fan shaft, at least one air sealing ring and at least one group of sealing filler are arranged in the sealing cavity side by side, and a high-pressure connector corresponding to the air sealing ring is arranged on the side wall of the shaft end sealing sleeve; and
the gland is correspondingly arranged at the second end part of the shaft end sealing sleeve and is fixedly connected with the shaft end sealing sleeve.
According to the pneumatic flexible shaft end sealing device, preferably, an external thread section is arranged on the gland, an internal thread section is arranged at the second end part of the shaft end sealing sleeve, and the gland is fixedly connected with the shaft end sealing sleeve through threads; or (b)
Corresponding multiple groups of threaded holes are formed between the gland and the shaft end sealing sleeve, and the gland and the shaft end sealing sleeve are fixedly connected through bolts.
According to the pneumatic flexible shaft end sealing device, preferably, at least two air sealing rings and at least two groups of sealing fillers are arranged in the sealing cavity, the air sealing rings and the sealing fillers are sequentially staggered, and one air sealing ring is arranged close to the limit shoulder.
According to the pneumatic flexible shaft end sealing device, preferably, two high-pressure connectors are correspondingly arranged on each air sealing ring.
According to the pneumatic flexible shaft end sealing device, preferably, one of the two high-pressure connectors on the air seal ring close to the limit shoulder is connected with a high-pressure air source, the other is communicated with an air outlet of the fan shell through an air outlet pipe, and the air outlet pipe is provided with a pressure control valve.
According to the pneumatic flexible shaft end sealing device, preferably, one of the two high-pressure connectors on the air seal ring far away from the limit shoulder is connected with a high-pressure air source, and the other is connected with a pressure alarm.
A smoke evacuation blower comprising:
the fan shell is provided with an exhaust port and an air outlet;
the impeller is connected and arranged on the fan shell through a fan shaft;
the driving motor is in transmission connection with the fan shaft; and
a pneumatically flexible shaft end seal as described above is disposed between the blower housing and the blower shaft.
By adopting the technical scheme, the beneficial effects are that:
according to the sealing device, an air seal is formed between high-pressure air and the shaft, the packing gland is used for adjusting the packing, the gap between the seal and the shaft is reduced, and the purpose of preventing process flue gas from overflowing is achieved. The main sealing medium is high-pressure air, so that the materials are convenient to obtain on site; the sealing process is that air seal is formed between high-pressure air and the shaft, so that flexible sealing is realized; the number of the gas rings and the high-pressure gas inflow can be flexibly adjusted according to the sealing effect. The packing seal is still adopted as auxiliary seal in the seal, so that the shaft end gap is reduced, and the gap can be freely adjusted. The pneumatic flexible sealing device has the advantages of simple design, convenient manufacture and low investment and operation cost.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present utility model, the following description will briefly explain the drawings of the embodiments of the present utility model. Wherein the showings are for the purpose of illustrating some embodiments of the utility model only and not for the purpose of limiting the same.
FIG. 1 is a schematic structural view of a pneumatic flexible shaft end sealing device according to an embodiment of the utility model.
Number in the figure:
110 is a fan shell, 120 is a fan shaft, 130 is an exhaust port, 140 is an air outlet, and 150 is an impeller;
201 is a shaft end sealing sleeve, 202 is a gland, 203 is a flange, 204 is a limiting shoulder, 205 is an air seal ring, 206 is a sealing filler, and 207 is a high-pressure joint.
Detailed Description
An exemplary embodiment of the present utility model will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the utility model are shown. Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art.
In the description of the present utility model, it should be understood that the expressions "first" and "second" are used to describe various elements of the present utility model and do not denote any order, quantity, or importance, but rather are used to distinguish one element from another.
It should be noted that when an element is referred to as being "connected," "coupled," or "connected" to another element, it can be directly connected, coupled, or connected, but it is understood that there may be intervening elements present therebetween; i.e. the positional relationship of direct connection and indirect connection is covered.
It should be noted that the use of the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items.
It should be noted that terms like "upper," "lower," "left," "right," and the like, which indicate an orientation or a positional relationship, are merely used to indicate a relative positional relationship, and are provided for convenience in describing the present utility model, and do not necessarily refer to devices or elements having a particular orientation, being constructed and operated in a particular orientation; when the absolute position of the object to be described is changed, the relative positional relationship may be changed accordingly.
Referring to fig. 1, the application discloses a pneumatic flexible shaft end sealing device, which is used for sealing between a fan shaft 120 and a fan housing 110, and comprises a shaft end sealing sleeve 201, a sealing cavity and a gland 202, wherein the shaft end sealing sleeve 201 is matched and arranged on the fan shaft 120, a flange 203 is arranged on the outer side of a first end part of the shaft end sealing sleeve 201, a limit shoulder 204 is arranged on the inner side of the first end part of the shaft end sealing sleeve 201, and the flange 203 is matched, adhered, sealed and fixed with the fan housing 110; the sealing cavity is arranged between the shaft end sealing sleeve 201 and the fan shaft 120, at least one air sealing ring 205 and at least one group of sealing fillers 206 are arranged in the sealing cavity side by side, and a high-pressure connector 207 corresponding to the air sealing ring 205 is arranged on the side wall of the shaft end sealing sleeve 201; the gland 202 is correspondingly arranged at the second end part of the shaft end sealing sleeve 201, and the gland 202 is fixedly connected with the shaft end sealing sleeve 201. The gas pocket has been seted up to the circumference of gas seal ring to realize the high pressure gas seal of gas seal ring position department, avoid flue gas to get into and spread, the packing seal can ensure the stability of assembly between the structure, and this application has realized the purpose that smoke protection gas overflows through gas pressure, and can not lead to having the clearance between the part, makes its transmission stable, and the practicality is better.
For the connection mode of the gland and the shaft end sealing sleeve, two different structural forms are provided in the embodiment, and the first structural form is as follows: the gland 202 is provided with an external thread section, the second end of the shaft end sealing sleeve 201 is provided with an internal thread section, and the gland 202 is fixedly connected with the shaft end sealing sleeve 201 through threads. The second structural form is as follows: corresponding multiple groups of threaded holes are formed between the gland 202 and the shaft end sealing sleeve 201, and the gland and the shaft end sealing sleeve are fixedly connected through bolts. The present application preferably adopts the structure of the first structural form.
Further, in order to optimize the sealing effect, at least two air seal rings 205 and at least two groups of sealing fillers 206 are arranged in the sealing cavity of the sealing device in order to keep the sealing device in a good working state, the air seal rings 205 and the sealing fillers 206 are sequentially staggered, and one air seal ring 205 is arranged close to the limiting shoulder 204. The addition of the air seal ring and the sealing filler can be performed according to actual conditions.
In order to further optimize the function of the air seal rings at different positions, so that the performance of the air seal rings is further improved, two high-pressure connectors 207 are correspondingly arranged on each air seal ring 205 in the application. One of the two high-pressure connectors 207 on the air seal ring 205 near the limit shoulder 204 is connected with a high-pressure air source, the other is communicated with the air outlet 140 of the fan shell through an air outlet pipe, and a pressure control valve is arranged on the air outlet pipe. One of the two high-pressure connectors 207 on the gas seal ring 205 far away from the limit shoulder 204 is connected with a high-pressure gas source, and the other is connected with a pressure alarm. The air seal ring near the limiting shoulder 204 can provide flowing air flow so as to be convenient for replacing exuded smoke quickly, avoid corrosion or damage of smoke dust and the like to the sealing structure, and ensure the sealing performance of the whole structure by the air seal ring far away from the limiting shoulder 204.
The application also discloses a smoke exhaust fan, which comprises a fan shell 110, an impeller 150, a driving motor and the pneumatic flexible shaft end sealing device, wherein the fan shell 110 is provided with an exhaust port 130 and an air outlet 140; the impeller 150 is connected to the fan housing 110 through a fan shaft; the driving motor is in transmission connection with the fan shaft 120; a pneumatically flexible shaft end seal is disposed between the blower housing 110 and the blower shaft 120.
Preferred embodiments for carrying out the utility model have been described in detail hereinabove, but it should be understood that these embodiments are merely illustrative and are not intended to limit the scope, applicability or configuration of the utility model in any way. The scope of the utility model is defined by the appended claims and equivalents thereof. Many modifications and variations of the foregoing embodiments will be apparent to those of ordinary skill in the art in light of the teachings of this utility model, which will fall within the scope of this utility model.
Claims (7)
1. A pneumatically flexible shaft end sealing device for sealing between a fan shaft and a fan housing, comprising:
the shaft end sealing sleeve is matched and sleeved on the fan shaft, a flange is arranged on the outer side of the first end part of the shaft end sealing sleeve, a limit shoulder is arranged on the inner side of the first end part of the shaft end sealing sleeve, and the flange is matched, adhered, sealed and fixed with the fan shell;
the sealing cavity is arranged between the shaft end sealing sleeve and the fan shaft, at least one air sealing ring and at least one group of sealing filler are arranged in the sealing cavity side by side, and a high-pressure connector corresponding to the air sealing ring is arranged on the side wall of the shaft end sealing sleeve; and
the gland is correspondingly arranged at the second end part of the shaft end sealing sleeve and is fixedly connected with the shaft end sealing sleeve.
2. A pneumatic flexible shaft end sealing device according to claim 1, wherein an external thread section is arranged on the gland, an internal thread section is arranged at the second end part of the shaft end sealing sleeve, and the gland is fixedly connected with the shaft end sealing sleeve through threads; or (b)
Corresponding multiple groups of threaded holes are formed between the gland and the shaft end sealing sleeve, and the gland and the shaft end sealing sleeve are fixedly connected through bolts.
3. A pneumatic flexible shaft end sealing device according to claim 1, wherein at least two air seal rings and at least two groups of sealing fillers are arranged in the sealing cavity, the air seal rings and the sealing fillers are sequentially staggered, and one air seal ring is arranged close to the limit shoulder.
4. A pneumatic flexible shaft end sealing device according to claim 3, wherein each air seal ring is provided with two high-pressure connectors.
5. A pneumatic flexible shaft end sealing device according to claim 4, wherein one of the two high-pressure connectors on the air seal ring close to the limit shoulder is connected with a high-pressure air source, the other is communicated with an air outlet of the fan shell through an air outlet pipe, and the air outlet pipe is provided with a pressure control valve.
6. A pneumatic flexible shaft end sealing device according to claim 4 or 5, wherein one of the two high pressure connectors on the air seal ring far from the limit shoulder is connected with a high pressure air source, and the other is connected with a pressure alarm.
7. A smoke evacuation blower comprising:
the fan shell is provided with an exhaust port and an air outlet;
the impeller is connected and arranged on the fan shell through a fan shaft;
the driving motor is in transmission connection with the fan shaft; and
a pneumatic flexible shaft end seal assembly according to any one of claims 1-6 disposed between the blower housing and the blower shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223114154.2U CN219045474U (en) | 2022-11-23 | 2022-11-23 | Pneumatic flexible shaft end sealing device and smoke exhaust fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223114154.2U CN219045474U (en) | 2022-11-23 | 2022-11-23 | Pneumatic flexible shaft end sealing device and smoke exhaust fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219045474U true CN219045474U (en) | 2023-05-19 |
Family
ID=86321203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223114154.2U Active CN219045474U (en) | 2022-11-23 | 2022-11-23 | Pneumatic flexible shaft end sealing device and smoke exhaust fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219045474U (en) |
-
2022
- 2022-11-23 CN CN202223114154.2U patent/CN219045474U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201103686Y (en) | Principal shaft sealing device | |
| CN219045474U (en) | Pneumatic flexible shaft end sealing device and smoke exhaust fan | |
| CN201443488U (en) | Filler structure of piston-type compressor | |
| CN209196128U (en) | The horizontal machine of rake type dryer seals | |
| CN202360452U (en) | Ventilator gas seal device | |
| CN209725227U (en) | A kind of dedicated butterfly valve of novel VOCs and RTO exhaust treatment system | |
| CN207131864U (en) | A kind of non-contact rotary sealing structure | |
| CN220060525U (en) | Sealing structure of real gas compressor | |
| CN206647664U (en) | Novel pressure mechanism of qi exports connecting tube | |
| CN220366129U (en) | Corrosion-resistant heat-insulating pipeline | |
| CN202220855U (en) | Air pressure-fired type bearing seal flange of diamond beaded saw | |
| CN219452493U (en) | Piston ring type sealed centrifugal fan | |
| CN221299570U (en) | Fan shaft sealing structure | |
| CN221323324U (en) | Expansion butterfly valve | |
| CN204267776U (en) | A kind of coal powder metering rotary seal valve | |
| CN220168572U (en) | Novel airtight structure of spiral screen centrifuge | |
| CN219960265U (en) | Waterproof type electric motor car wheel hub formula motor | |
| CN220204969U (en) | Heating and ventilation pipeline connecting device | |
| CN214366870U (en) | Fan shaft sealing device of centrifugal fan | |
| CN219623466U (en) | Heating and ventilation pipeline with good ventilation performance | |
| CN109505799B (en) | Novel fan wind gap is sealed device | |
| CN220059950U (en) | Leakage-proof centrifugal fan | |
| CN217519223U (en) | Positive pressure sealing device for equipment roll shaft | |
| WO2021253449A1 (en) | Environmentally friendly sealing apparatus for body of centrifugal blower | |
| CN220955730U (en) | Turbine impeller non-contact sealing system applied to high-pressure environment and turbine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |