CN103046505B - Sealing structure and snow blower - Google Patents
Sealing structure and snow blower Download PDFInfo
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- CN103046505B CN103046505B CN201210564513.6A CN201210564513A CN103046505B CN 103046505 B CN103046505 B CN 103046505B CN 201210564513 A CN201210564513 A CN 201210564513A CN 103046505 B CN103046505 B CN 103046505B
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- air duct
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- seal groove
- weather strip
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Abstract
The invention discloses a sealing structure. The sealing structure comprises an outer air duct (1) and an inter air duct (2), and the outer air duct (1) is sleeved on the outer side of the inner air duct (2) at an interval. The sealing structure further comprises air guide pipes (30), inlet ends of the air guide pipes (30) are arranged on the sidewall of the outer air duct (1) and always connected in the outer air duct (1), and the outlet ends of the air guide pipes (30) are arranged on the sidewall of the outer air duct (1) and always connected in gaps between the outer air duct (1) and the inner air duct (2). Since the air guide pipes (30) connected with the gaps between the outer air duct (1) and the inner air duct (2) are arranged on the inner wall of the outer air duct (1) , one part of airflow entering the outer air duct (1) can be injected into the gaps between the outer air duct (1) and the inner air duct (2), so that the airflow is prevented from leaking from the gaps between the outer air duct (1) and the inner air duct (2). The invention further discloses a snow blower comprising the sealing structure.
Description
Technical field
The present invention relates to snow blowing truck field, particularly, relate to a kind of hermetically-sealed construction and the snow blowing truck comprising sealing structure
Background technology
Snow blowing truck is that the high pressure cold wind that utilizes blower fan to produce or hot blast blow away the ice and snow on ground to reach the environmental sanitation machinery of ground snow removing effect, in the operation process of snow blowing truck, a large amount of high-pressure blasts is needed to purge road surface, simultaneously, also need air channel to move up and down to meet different job requirements, therefore, require, between the interior outer air duct of snow blowing truck, there is excellent sealing performance, should sealing effectiveness be ensured, the motion between interior outer air duct can not be affected again.
Fig. 1 shows a kind of hermetically-sealed construction of prior art, sealing structure comprises outer air duct 1 ', interior air channel 2 ', flange 3 ', joint ring 4 ' and baffle plate 5 ', outer air duct 1 ' is socketed in outside, interior air channel 2 ', flange 3 ' is together with the lower weld of outer air duct, and flange 3 ', joint ring 4 ' and baffle plate 5 ' three are linked together by bolt and nut 6 ', the inside of joint ring 4 ' is provided with three circle airtight and watertight paddings 7 ', between interior outer air duct, there is less gap, during work, interior air channel 2 ' slides up and down in the inside of outer air duct 1 ', sealing between interior outer air duct relies on filler contact to seal.The defect of this prior art is: 1, because interior outer air duct is all thin-walled parts, is very easily out of shape during processing welding, and its size and form tolerance are difficult to ensure, if the gap between interior outer air duct is less, can cause assembling difficulty and can not relative motion; If gap is comparatively large, be difficult to again ensure sealing effectiveness.2, airtight and watertight padding is fixed on joint ring, when moving up and down, due to interior outer air duct form error, filler can not with wind path wall uniform contact, contact tighter position will affect air channel motion, not have contact position will affect sealing performance.
Given this, need to design a kind of novel hermetically-sealed construction, to overcome or to alleviate the above-mentioned defect of prior art.
Summary of the invention
The object of this invention is to provide and a kind ofly not only can ensure sealing effectiveness but also do not affect the hermetically-sealed construction moved between interior outer air duct.
To achieve these goals, the invention provides a kind of hermetically-sealed construction, sealing structure comprises outer air duct and interior air channel, described outer air duct be socketed in described interior air channel outside and and between described interior air channel, there is gap, wherein, described hermetically-sealed construction also comprises induced duct, the sidewall that the arrival end of this induced duct is arranged on described outer air duct lead in described outer air duct all the time, on the sidewall that the port of export of described induced duct is arranged on described outer air duct and the gap led to all the time between described outer air duct and described interior air channel.
Preferably, described induced duct comprises gas inflow segment, interlude and the gas with the described port of export with described arrival end successively and flows out section, and described gas inflow segment and gas flow out section and is obliquely installed obliquely downward relative to the sidewall of described outer air duct.
Preferably, the port of export of described induced duct has gradually expanded form air outlet.
Preferably, the quantity of described induced duct is multiple and arranges relative to the sidewall circumference interval of described outer air duct.
Preferably, described hermetically-sealed construction comprises sealing device, and sealing device is connected to the lower end of described outer air duct to close the gap between described outer air duct and interior air channel.
Preferably, described sealing device comprises flange, baffle plate and the joint ring between flange and baffle plate, the lower end of described flange and described outer air duct links together, described flange, joint ring and baffle plate three are linked together by securing member and near the outer wall in described interior air channel, the inner surface of described joint ring is provided with seal groove, be provided with weather strip and pressing plate in sealing groove, described weather strip is pressed against on the outer wall in described interior air channel by this pressing plate.
Preferably, described seal groove comprises the first seal groove, the weather strip and the pressing plate that are positioned at this first seal groove are respectively the first weather strip and the first pressing plate, described joint ring is provided with the first radial hole communicated with described first seal groove, the first regulating part passes described first radial hole to extrude described first pressing plate.
Preferably, described first weather strip and the first pressing plate are divided into corresponding multiple segmental arcs respectively in the circumferential, and have gap between adjacent two segmental arcs.
Preferably, the inner surface of described joint ring is in axial direction provided with multiple first seal groove, in adjacent two the first seal grooves, stagger in circumferential direction mutually in the gap between adjacent two segmental arcs of the first weather strip.
Preferably, described first weather strip is the C shape weather strip with upper lip and lower lip.
Preferably, described seal groove comprises the second seal groove, this second seal groove is positioned at the bottom of described first seal groove and is positioned at the lower end of described joint ring, the weather strip and the pressing plate that are positioned at this second seal groove are respectively the second weather strip and the second pressing plate, and the cross section of described second weather strip and the second pressing plate is respectively the wedge shape of wedging direction towards the outer wall in described interior air channel.
Preferably, described baffle plate is provided with the second axial hole communicated with described second seal groove, the second regulating part passes described second axial hole to extrude described second pressing plate.
Preferably, described first regulating part and the second regulating part are respectively adjustment screw.
Preferably, the quantity of described seal groove is multiple and arranges relative to the inner surface axial interval of described joint ring, between adjacent two seal grooves, described joint ring is provided with radial passage, is provided with lubricating cup in this radial passage.
The present invention also provides a kind of snow blowing truck, and wherein, described snow blowing truck comprises hermetically-sealed construction of the present invention.
Pass through technique scheme, owing to being provided with the induced duct leading to outer air duct and the gap between outer air duct and interior air channel all the time on the sidewall of outer air duct, sprayed the gap entered between outer air duct and interior air channel with a part for the air-flow by entering outer air duct by induced duct, thus prevent air-flow to leak from the gap of interior outer air duct.Here, air-flow is utilized to seal, not by the impact of air channel distortion with fit-up gap, not only ensure that sealing effectiveness but also do not affected between interior outer air duct and moved, and in addition, use fluid mechanics principle to rely on air-flow inherently to reduce the leakage of cold wind, thus do not need to provide extra power source, in addition, the throughput of induced duct introducing is less and major part flows back to air channel, thus can not cause windage loss.
Other features and advantages of the present invention are described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for manual, is used from explanation the present invention, but is not construed as limiting the invention with detailed description of the invention one below.In the accompanying drawings:
Fig. 1 is a kind of structural representation of existing hermetically-sealed construction;
Fig. 2 is the structural representation of the hermetically-sealed construction according to one embodiment of the present invention;
Fig. 3 is the partial enlarged drawing at I place in Fig. 2;
Fig. 4 is the partial enlarged drawing at II place in Fig. 2.
Description of reference numerals
Air channel 3 ' flange in 1 ' outer air duct 2 '
4 ' joint ring 5 ' baffle plate 6 ' bolt and nut
Air channel in 7 ' airtight and watertight padding 1 outer air duct 2
30 induced duct 31 gas inflow segment 32 gases flow out section
400 sealing device 401 flange 402 joint rings
403 first regulating part 404 first weather strip 405 first pressing plates
406 lubricating cup 407 second weather strip 408 second pressing plates
409 second regulating part 410 baffle plates
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, detailed description of the invention described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
In the present invention, when not doing contrary explanation, the noun of locality such as " upper and lower, left and right " of use typically refers to reference to upper and lower, left and right shown in the drawings; " inside and outside " refers to profile inside and outside relative to each parts itself.
See Fig. 2, hermetically-sealed construction provided by the invention comprises outer air duct 1 and interior air channel 2, outer air duct 1 be socketed in interior air channel 2 outside and and between interior air channel 2, there is gap, wherein, hermetically-sealed construction also comprises induced duct 30, the sidewall that the arrival end of this induced duct 30 is arranged on outer air duct 1 lead in outer air duct 1 all the time, on the sidewall that the port of export of induced duct 30 is arranged on the outer air duct 1 and gap led to all the time between outer air duct 1 and interior air channel 2.
Here, the arrival end of induced duct 30 leads to all the time in outer air duct 1 and refers to when interior air channel 2 moves up and down in outer air duct 1, even if interior air channel 2 moves to the arrival end that peak also can not shelter from induced duct 30, namely in, the top in air channel 2 is lower than the arrival end of induced duct 30, and the port of export of induced duct 30 gap led to all the time between outer air duct 1 and interior air channel 2 refers to when interior air channel 2 moves up and down in outer air duct 1, even if interior air channel 2 moves to the port of export of the top higher than induced duct 30 that minimum point also can make interior air channel 2.
Use hermetically-sealed construction of the present invention, owing to being provided with the induced duct 30 leading to outer air duct 1 and the gap between outer air duct 1 and interior air channel 2 all the time on the inwall of outer air duct 1, sprayed the gap entered between outer air duct 1 and interior air channel 2 with a part for the air-flow by entering outer air duct 1 by induced duct 30, thus prevent air-flow to leak from the gap of interior outer air duct.Here, air-flow is utilized to seal, not by the impact of air channel distortion with fit-up gap, not only ensure that sealing effectiveness but also do not affected between interior outer air duct and moved, and in addition, use fluid mechanics principle to rely on air-flow inherently to reduce the leakage of cold wind, thus do not need to provide extra power source, in addition, the throughput of induced duct 30 introducing is less and major part flows back to air channel, thus can not cause windage loss.
Wherein, induced duct 30 can be arranged on outer air duct 1 in a variety of forms, enter in induced duct 30 more swimmingly to enable air-flow, induced duct 30 comprises the gas inflow segment 31 with described arrival end successively, interlude flows out section 32 with the gas with the described port of export, make the gas inflow segment 31 of induced duct 30 and gas flow out section 32 to be obliquely installed obliquely downward relative to the sidewall of outer air duct 1, even if the arrival end obtaining gas inflow segment 31 caters to the direction that gas flows into substantially, and make the port of export that gas flows out section 32 substantially upwards to spray in the gap entering outer air duct 1 and interior air channel 2 by the air-flow flow in induced duct 30, to stop the air-flow entered in the gap in outer air duct 1 and interior air channel 2 from top to bottom.
In order to better enter the gap between interior outer air duct by barrier air, the preferred port of export by induced duct 30 is arranged to the structure with function of increasing pressure here, and particularly, the port of export of induced duct 30 has gradually expanded form air outlet.Wherein, gradually expanded form air outlet directly can be arranged on the port of export of induced duct 30 integratedly, because the stream pressure at gradually expanded form air outlet place is very large, this gradually expanded form air outlet may be damaged, therefore, for the ease of replacing and the maintenance of component, also a gradually expanded form diffuser pipe can be connected at the port of export of induced duct 30.Here, the port of export due to induced duct 30 has gradually expanded form air outlet, thus the air-flow in induced duct 30 can be made to reduce at port of export flow velocity, to be become by the kinetic transformation of air-flow potential energy to form a partial high pressure district between interior outer air duct, air-flow is stoped to leak from the gap between interior outer air duct.
In addition, in embodiments of the present invention, the quantity of induced duct 30 is multiple and arranges relative to the sidewall circumference interval of outer air duct 1, thus enhances sealing effectiveness.
In order to strengthen the sealing effectiveness of hermetically-sealed construction according to the embodiment of the present invention further, sealing structure comprises sealing device 400, and sealing device 400 is connected to the lower end of outer air duct 1 to close the gap between described outer air duct 1 and interior air channel 2.
Sealing device 400 can be the various common seal being adapted to sealing structure, in embodiments of the present invention, sealing device 400 comprises flange 401, baffle plate 410 and the joint ring between flange and baffle plate 402, flange 401 links together with the lower end of outer air duct 1, described flange 401, joint ring 402 and baffle plate 410 three are linked together by securing member and near the outer wall in described interior air channel 2, the inner surface of joint ring 402 is provided with seal groove, weather strip and pressing plate is provided with in sealing groove, weather strip is pressed against on the outer wall in described interior air channel by this pressing plate.Such setting, makes weather strip can contact fully with the outer wall in interior air channel 2, to reach good sealing effectiveness.
In addition, contact uniformly with the outer wall in interior air channel 2 to enable weather strip, while ensureing sealing effectiveness, make again, between the outer wall in interior air channel 2 and weather strip, there is suitable frictional force, preferably, described seal groove comprises the first seal groove, the weather strip and the pressing plate that are positioned at this first seal groove are respectively the first weather strip 404 and the first pressing plate 405, described joint ring is provided with the first radial hole communicated with described first seal groove, the first regulating part 403 passes described first radial hole to extrude described first pressing plate 405.Wherein, the first weather strip 404 preferably has the C shape weather strip of upper lip and lower lip.Here, radially can regulate the degree of tightness between the first weather strip 404 and interior air channel outer wall by the first regulating part 403, and then not only ensure sealing effectiveness but also do not affected between interior outer air duct to move.It should be noted that; realize having multiple to the radial adjustable means of the first weather strip 404; the first pressing plate 405 such as can be made itself to have elasticity; or connect a Compress Spring etc. at the rear portion of the first pressing plate 405; various distortion like this all should fall into protection scope of the present invention, repeat no more here.
In addition, the first weather strip 404 and the first pressing plate 405 are divided into corresponding multiple segmental arcs respectively in the circumferential, and have gap between adjacent two segmental arcs.Like this, the deflection of weather strip can be made full use of to ensure sealing effectiveness.
In addition, when being in axial direction provided with multiple first seal groove (in embodiments of the present invention being two) on the inner surface of joint ring 402, in adjacent two the first seal grooves, stagger in circumferential direction mutually in gap between adjacent two segmental arcs of the first weather strip 404, like this, air-flow is made can not to leak out from gap.
According to the embodiment of the present invention, described seal groove comprises the second seal groove, this second seal groove is positioned at the bottom of the first seal groove and is positioned at the lower end of joint ring 402, be positioned at the cross section that the weather strip of this second seal groove and pressing plate be respectively the second weather strip 407 and the second pressing plate 408, second weather strip 407 and the second pressing plate 408 and be respectively the wedge shape of wedging direction towards the outer wall in described interior air channel.Baffle plate 410 is provided with the second axial hole communicated with the second seal groove, the second regulating part 409 passes the second axial hole to extrude the second pressing plate 408.The object of such setting and benefit and above-mentioned first weather strip 404 relevant arranges similar, therefore repeats no more.
According to the embodiment of the present invention, preferably, the first regulating part 403 and the second regulating part 409 are respectively adjustment screw.
In addition, when the quantity of seal groove is multiple and arranges relative to the inner surface axial interval of joint ring 402, between adjacent two seal grooves, joint ring 402 is provided with radial passage, lubricating cup 406 is installed in this radial passage.It should be noted that, one section of space is all had between every road sealing groove, by lubricating cup 406, lubricating grease can be added in space, the space being full of lubricating grease is equivalent to flexible filler sealing ring, thus can the leakage of barrier air, meanwhile, flexible lubrication fat also can not produce harmful effect to the motion in air channel.
In addition, the present invention also provides a kind of snow blowing truck, and wherein, described snow blowing truck comprises hermetically-sealed construction of the present invention.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each the concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, can be combined by any suitable mode.In order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible combination.
In addition, also can be combined between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (15)
1. a hermetically-sealed construction, sealing structure comprises outer air duct (1) and interior air channel (2), described outer air duct (1) be socketed in described interior air channel (2) outside and and between described interior air channel (2), there is gap, it is characterized in that, described hermetically-sealed construction also comprises induced duct (30), the sidewall that the arrival end of this induced duct (30) is arranged on described outer air duct (1) lead in described outer air duct (1) all the time, on the sidewall that the port of export of described induced duct (30) is arranged on described outer air duct (1) and the gap led to all the time between described outer air duct (1) and described interior air channel (2).
2. hermetically-sealed construction according to claim 1, it is characterized in that, described induced duct (30) comprises gas inflow segment (31), interlude and the gas with the described port of export with described arrival end successively and flows out section (32), and described gas inflow segment and gas flow out section and is obliquely installed obliquely downward relative to the sidewall of described outer air duct (1).
3. hermetically-sealed construction according to claim 1, is characterized in that, the port of export of described induced duct (30) has gradually expanded form air outlet.
4. hermetically-sealed construction according to claim 1, is characterized in that, the quantity of described induced duct (30) is multiple and arranges relative to the sidewall circumference interval of described outer air duct (1).
5. hermetically-sealed construction according to claim 1, it is characterized in that, described hermetically-sealed construction comprises sealing device (400), and sealing device (400) is connected to the lower end of described outer air duct (1) to close the gap between described outer air duct (1) and interior air channel (2).
6. hermetically-sealed construction according to claim 5, it is characterized in that, described sealing device (400) comprises flange (401), baffle plate (410) and the joint ring between flange and baffle plate (402), described flange (401) links together with the lower end of described outer air duct (1), described flange (401), joint ring (402) and baffle plate (410) three are linked together by securing member and near the outer wall of described interior air channel (2), the inner surface of described joint ring (402) is provided with seal groove, weather strip and pressing plate is provided with in sealing groove, described weather strip is pressed against on the outer wall in described interior air channel by this pressing plate.
7. hermetically-sealed construction according to claim 6, it is characterized in that, described seal groove comprises the first seal groove, the weather strip and the pressing plate that are positioned at this first seal groove are respectively the first weather strip (404) and the first pressing plate (405), described joint ring is provided with the first radial hole communicated with described first seal groove, the first regulating part (403) through described first radial hole to extrude described first pressing plate (405).
8. hermetically-sealed construction according to claim 7, is characterized in that, described first weather strip (404) and the first pressing plate (405) are divided into corresponding multiple segmental arcs respectively in the circumferential, and have gap between adjacent two segmental arcs.
9. hermetically-sealed construction according to claim 8, it is characterized in that, the inner surface of described joint ring (402) is in axial direction provided with multiple first seal groove, in adjacent two the first seal grooves, stagger in circumferential direction mutually in the gap between adjacent two segmental arcs of the first weather strip (404).
10. hermetically-sealed construction according to claim 7, is characterized in that, described first weather strip (404) is for having the C shape weather strip of upper lip and lower lip.
11. hermetically-sealed constructions according to claim 6, it is characterized in that, described seal groove comprises the second seal groove, this second seal groove is positioned at the bottom of described first seal groove and is positioned at the lower end of described joint ring (402), the weather strip and the pressing plate that are positioned at this second seal groove are respectively the second weather strip (407) and the second pressing plate (408), and the cross section of described second weather strip (407) and the second pressing plate (408) is respectively the wedge shape of wedging direction towards the outer wall in described interior air channel.
12. hermetically-sealed constructions according to claim 11, it is characterized in that, described baffle plate (410) is provided with the second axial hole communicated with described second seal groove, the second regulating part (409) through described second axial hole to extrude described second pressing plate (408).
13. hermetically-sealed constructions according to claim 7 or 12, it is characterized in that, described first regulating part (403) and the second regulating part (409) are respectively adjustment screw.
14. hermetically-sealed constructions according to claim 6, it is characterized in that, the quantity of described seal groove is multiple and arranges relative to the inner surface axial interval of described joint ring (402), between adjacent two seal grooves, (402) are provided with radial passage to described joint ring, are provided with lubricating cup (406) in this radial passage.
15. 1 kinds of snow blowing trucks, is characterized in that, described snow blowing truck comprises according to the hermetically-sealed construction in claim 1-14 described in any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210564513.6A CN103046505B (en) | 2012-12-24 | 2012-12-24 | Sealing structure and snow blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210564513.6A CN103046505B (en) | 2012-12-24 | 2012-12-24 | Sealing structure and snow blower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103046505A CN103046505A (en) | 2013-04-17 |
| CN103046505B true CN103046505B (en) | 2014-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210564513.6A Active CN103046505B (en) | 2012-12-24 | 2012-12-24 | Sealing structure and snow blower |
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| CN (1) | CN103046505B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2480892A1 (en) * | 1980-04-18 | 1981-10-23 | Ferodo Sa | Compressible end seal for air duct of car heater - is used in open length housing onto open duct lip of which ends have external returns of quadrant shape |
| CN2365500Y (en) * | 1997-10-18 | 2000-02-23 | 方贺 | Self-compensating elliptical ring self-sealing pipe joint |
| DK1481135T3 (en) * | 2002-03-01 | 2007-04-02 | Mt Hoejgaard As | Gasket for use between counter-rotating cylinder faces and method of mounting the transition piece on a pile member |
| CN200971472Y (en) * | 2006-10-20 | 2007-11-07 | 江阴法尔胜住电新材料有限公司 | Water-proof covering for slope chain |
| CN202161269U (en) * | 2011-07-25 | 2012-03-14 | 莱克电气股份有限公司 | Metal extension tube of low-energy-consumption dust collector |
| CN202280035U (en) * | 2011-10-28 | 2012-06-20 | 中联重科股份有限公司 | Fan interface structure for sweeping vehicle |
| CN202969316U (en) * | 2012-12-24 | 2013-06-05 | 长沙中联重科环卫机械有限公司 | Sealing structure and snow blowing vehicle |
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2012
- 2012-12-24 CN CN201210564513.6A patent/CN103046505B/en active Active
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| CN103046505A (en) | 2013-04-17 |
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Address after: 410000 Hunan province Changsha hi tech Development Zone, Lin Yulu No. 288 Patentee after: Changsha ZOOMLION Environmental Industry Co., Ltd. Address before: 410013 Changsha province high tech Development Zone, No. 307 South Road, silver basin Patentee before: Environmental & Sanitation Machinery Branch of Changsha Zoomlion Heavy Industry Science & Technology |