CN203906787U - Gas-assisted compensation type end face sealing structure - Google Patents
Gas-assisted compensation type end face sealing structure Download PDFInfo
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- CN203906787U CN203906787U CN201420182425.4U CN201420182425U CN203906787U CN 203906787 U CN203906787 U CN 203906787U CN 201420182425 U CN201420182425 U CN 201420182425U CN 203906787 U CN203906787 U CN 203906787U
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- valve rotor
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- discharge valve
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- 238000007789 sealing Methods 0.000 title abstract description 24
- 239000011148 porous material Substances 0.000 claims description 18
- 210000002421 cell wall Anatomy 0.000 claims description 11
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 235000014676 Phragmites communis Nutrition 0.000 claims description 2
- 238000010943 off-gassing Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 23
- 230000000694 effects Effects 0.000 abstract description 18
- 239000000843 powder Substances 0.000 abstract description 14
- 238000007599 discharging Methods 0.000 abstract description 10
- 239000002245 particle Substances 0.000 abstract description 3
- 239000008187 granular material Substances 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 210000001138 tear Anatomy 0.000 description 1
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Abstract
The utility model belongs to the field of rotary discharging valve equipment, and particularly relates to a gas-assisted compensation type end face sealing structure for a pump. The gas-assisted compensation type end face sealing structure at least comprises a rotary discharging valve rotor and an end cover; a gap is formed between the end cover and a rotary discharging valve rotor end part end face and/or a rotary discharging valve rotor end part ring face of the rotary discharging valve rotor; the end cover is provided with an accommodating area used for accommodating a sealing part, one end of the sealing part is abutted against the corresponding face of the end cover, and the other end of the sealing part extends towards the rotary discharging valve rotor end part end face and/or the rotary discharging valve rotor end part ring face of the rotary discharging valve rotor and is abutted against the face; the end cover is also provided with an air hole channel for communicating an external compressed air source with an end cover matched face on the sealing part, and the air outlet direction of the air hole channel is the same as the force application direction of the sealing part to the corresponding face of the rotary discharging rotor. The gas-assisted compensation type end face sealing structure can effectively guarantee the reliable sealing effect during operation of a valve body and further fulfill the aim of stopping particle material or powder leakage.
Description
Technical field
The utility model belongs to the rotary discharge valve apparatus field using in the feeding system, air-transport system, transmission measurement system of the industry granule materials such as chemical industry, food, metallurgy or powder material, is specifically related to the auxiliary compensation end face seal structure of a kind of pump gas.
Background technique
Granule materials or powder and daily life are closely bound up, play a part very important in national economy.Along with the fast development of China's economy, the production of all trades and professions is also in continuous expansion, and being gradually improved and advanced person of granule materials or powder preparation and treatment technology, has brought the flourish of China's granule materials or powder technology.Some industry was paid attention to more and more widely as some raw material of the factories such as oil, chemical industry, metallurgy, building materials, grain, pharmacy, grain, the environmental pollution that powder-granule material produces in traditional feed, mode of movement production process in the past, therefore the feed of granule materials or powder, conveying technology by the traditional approachs such as original carrier bar conveying, Belt Conveying, fighter's lift progressively to high content of technology, floor space is little, the advanced pneumatic conveying mode of easy operating control develops, and thoroughly changes the problems such as the pollution that traditional approach leaves over.
Pneumatic conveyer is mainly made up of parts such as control system, feeding device, air machinery, separation dedusting, pipelines; Rotary valve is as the key equipment of feeding device, and the whether reasonable success or not that directly has influence on rotary valve and transporting system of its Seal Design, closely has influence on other relevant devices and whole system.Rotary valve device fabrication industry in China's feedway is always in low-level developing stage for a long time; the life and reliability of traditional form sealing does not reach requirement on industrial application, and the reason over half that causes rotary valve machine halt trouble is because the inefficacy of sealing system causes material from leakage.Therefore seal failure has become the bottleneck of restriction rotary valve stable operation, how to overcome above-mentioned technology chains, and develop a kind of solid body end face seal structure, to guarantee the sealing effect of valve body when the running, be related domain technical problem urgently to be resolved hurrily nearly ten years.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, provide a kind of a kind of gas rational in infrastructure and practical to assist compensation end face seal structure, to guarantee the reliable sealing effect of valve body in the time operating, and then reach the object of stopping granule materials or powder leakage.
For achieving the above object, the utility model has adopted following technological scheme:
The auxiliary compensation end face seal structure of a kind of gas, at least comprise rotary discharge valve rotor and be positioned at rotary discharge valve rotor tip place and its rotating shaft between form the end cap that is rotatably assorted, between the rotary discharge valve rotor tip end face of described end cap and rotary discharge valve rotor and/or end anchor ring, have gap; It is characterized in that: described end caps possesses the district that holds for holding sealed department, sealed department one end is resisted against the respective face place of end cap, another rotary discharge valve rotor-end to rotary discharge valve rotor tip end face and/or postpone in anchor ring place, end and with its face against layout; Described end caps is also furnished with and is communicated with on external compression source of the gas and sealed department and pore path end cap fitting surface place, and the outgassing direction of described pore path and sealed department arrange in the same way for the application of force direction of rotary discharge valve rotor respective face.
Parallel and uniform successively along the bearing of trend that holds district between the axis that holds district of described pore path axis and annular groove shape.
The described district's profile of holding is annular groove shape and coaxially arranged with rotary discharge valve rotor axis; Pore path be positioned at state annular groove shape hold district bottom land place.
The district that holds of described annular groove shape is oat tail groove structure; Sealed department is annular seal bar, on sealed department with hold that an end that district coordinates is corresponding to be and to hold cell wall angle of inclination, district consistent conical surface structure, form inlaid type matching relationship between the two.
On described sealed department, be provided with deep gouge with holding one end end face indent that district coordinates, the district's axis coaxle that holds of deep gouge axis and annular groove shape is arranged; In deep gouge, be embedded and be furnished with spring sheet, the elastic force direction of spring sheet is pointed to the cell wall place, both sides that holds district of annular groove shape.
Spring sheet profile is " U " word shape and along the deep gouge flute length direction layout that postpones, and deep gouge cross-sectional profile is corresponding is " U " word columnar structure consistent with spring sheet profile, and deep gouge cell wall spacing is less than spring sheet maximum flexibility size; Deep gouge notch profile is the closing in shape structure for positioning ejection reed position.
The described district that holds is arranged in and closes on rotary discharge valve rotor tip end face edge place on end cap.
The end, one end for coordinating with rotary discharge valve rotor end-face on the sealed department structure that takes the form of inclined plane, the cooperation place with it of rotary discharge valve rotor end-face is provided with chamfering, and formation face pushes against formula matching relationship between the two.
The beneficial effects of the utility model are:
1), abandoned traditional pure mechanical seal structure, in the mode of source of the gas ventilation, in conjunction with traditional end face seal structure, thereby realized the certainly mobile regulating effect of sealed department self.On the basis of traditional end face seal, to be communicated with the pore via alignment sealed department of compressed gas source, thereby given all the time the application of force of sealed department with assigned direction, meanwhile, the other end at the relative pore path place of sealed department is pushed against end face or the anchor ring place, end of aforementioned rotor, constantly rotate when stirring with conveying material at rotary discharge valve rotor, due to the existence of sealed department, granule materials or powder material are arranged in along the matching gap of rotary discharge valve rotor and end cap, also be moving part and not the matching gap of moving part let out, thereby ensure the steady discharging of material, along with the continuous rotation of rotary discharge valve rotor, at the fitting surface place of itself and sealed department, will inevitably make the relatively soft sealed department of quality produce wearing and tearing, mechanical seal in the past is just certain to occur the unreliable and leakage phenomenon of sealing, and the layout of pore path of the present utility model, exactly solve above-mentioned difficult point, because compressed gas source is ventilated all the time, also be that sealed department has a directing force that points to the corresponding fitting surface of rotary discharge valve rotor all the time, no matter how sealed department produces wearing and tearing, under the pressurized gas effect of source of the gas, sealed department constantly along its application of force direction move ahead and continue push against rotary discharge valve rotor, finally complete both long-time reliable sealing effects, its practice is reliable and stable, can effectively guarantee the reliable sealing effect of valve body in the time of running, and then reach the object of stopping granule materials or powder leakage.
2), as holding the preferred arrangement scheme in district, herein or with the annular groove shape coaxial with rotary discharge valve rotor axis, be especially as the criterion with the annular groove shape structure of dove-tail.On the one hand, above-mentioned coaxially arranged annular groove columnar structure, in the process that has effectively ensured to rotate at rotary discharge valve rotor, for the minimum application of force impact of sealed department, the rotary discharge valve rotor that may occur while having avoided disalignment is for the application of force skewness of sealed department; On the other hand, the district that holds of dovetail groove shape constructs, not only ensure that sealed department is in the affixed effect that is embedded of holding in district, especially in the time of outside compressed gas source ventilation, make sealed department be able to hold by " extruding " mode of district's sidewall, further ensure sealed department and hold the interval effect that closely cooperates, to guarantee the reliable sealing object of sealed department self.
3), the deep gouge on sealed department, in fact can be understood as along its end face another road groove structure being arranged to of postponing, it has ensured the location and installation of follow-up spring sheet on the one hand, give on the other hand reliable shock surface when external air source enters, facilitated the effective application of force effect of external air source for sealed department; The layout of spring sheet, hold at aforementioned dovetail groove shape on the basis of cone match of district and sealed department, further ensure sealing effect between the two, the elastic force of the assigned direction by spring sheet is exerted pressure, make sealed department no matter under which kind of use state of valve body, can stablize the application of force to holding the respective side walls in district accurately and reliably; The closing in groove structure of deep gouge self structure shown in also can design cost model utility, thereby ensure the polarization of spring sheet, make it in the time of practical operation, be unlikely to occur dropping possibility under the situations such as valve body vibration, finally for the normal reliable operation of whole sealing mechanism provides strong guarantee.
4), the arrangement of pore path, ensured the even application of force effect for the sealing surface that holds district and even whole sealed department of annular groove shape; The position that holds district limits, better ensure the isolated obstruction effect for external particle material or powder, avoid the design the phenomenon unreasonable and granule materials of appearance or the matching gap of powder infiltration end cap and rotary discharge valve rotor end-face of sealed department to occur, can be chamfering seal construction in both fitting surface place designs especially, further to ensure stabilized seal object between the two, its sealing is very reliable.
Brief description of the drawings
Fig. 1 is mounting point of the present utility model structural representation;
Fig. 2 is the I part partial enlarged drawing of Fig. 1.
The corresponding each component names of number in the figure institute is as follows:
10-rotary discharge valve rotor 11-chamfering
20-end cap 21-holds district 22-pore path
30-sealed department 31-deep gouge 32-spring sheet
Embodiment
For ease of understanding, in conjunction with Fig. 1-2, concrete assembly of the present utility model and workflow are done to following description herein:
Concrete structure of the present utility model as shown in Figure 1-2, comprise valve casing a, the built-in rotor of valve casing a (being also rotary discharge valve rotor 10), is provided with the conveying blade for delivery of material on rotor, the both sides axle head of rotor respectively and be arranged between the end cap 20 of its corresponding side the formation relation that is rotatably assorted; At the counterface gap location of rotor and end cap 20, the utility model is provided with sealed department 30 and is sealed; The concrete arrangement of sealed department 30, is to rely on the concentric annular groove shape of indent setting and rotating shaft rotating shaft on the face that faces rotor end-face place on end cap 20 to hold district 21, holds and in district 21, is embedded sealed department 30; The mode that sealed department 30 is embedded with wedge shape is on the one hand fixed in to be held in district 21, its the other end is directly postponed and is pushed against the corresponding end-faces place of rotor, thereby between the rotor end-face that makes originally to exist gap and end cap 20, form seal construction, completely cut off effect with the external particle material or the powder that complete when the conveying.Hold district's 20 profiles in the form of slot, just naturally there is bottom land, the utility model arranges pore path 22 at its bottom land place, and directly extend to external compression source of the gas place, like this, once the ventilation of external compression source of the gas, can inculcate to holding in district 21 along pore path 22, further to realize the effect that pushes against for sealed department 30; One end indent that faces pore path 22 of sealed department 30 arranges deep gouge 31, in deep gouge 31, is embedded with " U " word shape spring sheet 32, finally realizes above-mentioned deep gouge 31 cell walls of sealed department 30 and holds the application of force between district's 21 cell walls against effect.
When the utility model specific operation, open machine, granule materials or powder material are constantly fallen by top, and rotor self rotate and the synergy of conveying blade on it under constantly descended dumping material; Meanwhile, because rotor starts to rotate, the sealed department 30 that is now positioned at its end be again and end cap 20 as moving part not between direct affixed, therefore rotor start and sealed department 30 between produce and rub and make constantly generation service wear of sealed department 30.The existence of sealed department 30, effectively intercept granule materials or the powder leakage phenomenon along the matching gap of rotor and end cap 20, guarantee the normal reliable running of body, and along the pore path 22 of end cap 20 interior layouts, constantly exert pressure to sealed department 30, make sealed department 30 be able to all the time tightly be fitted in rotor end-face place, specifically as shown in Figure 1.Afterwards, machine continues running, sealed department 30 constantly weares and teares, sealed department 30 is in wearing and tearing, it constantly continues to move ahead along the cell wall that holds district 21 being subject to the effect of the bleed pressure being applied by pore path 22, the seal clearance being occurred with rotor end-face because of self wearing and tearing to supplement sealed department 30, thus also just guarantee all the time the reliable sealing effect between sealed department 30 and rotor end-face.
In sum, the power source of the utility model using source of the gas as sealed department 30, in conjunction with traditional mechanical seal; The compression pressure providing using source of the gas is as the power that pushes against between sealed department 30 and rotor end-face, thereby guarantee being sealed and matched between sealed department 30 and rotor end-face, again with the sealed department 30 of spring sheet 32 and unique conical surface shape with hold being fitted to each other of district's 21 cell walls, thereby ensure that sealed department 30 can reliably be fitted in closely all the time and hold 21 cell wall places of district in the time moving ahead, thereby guaranteed to hold being sealed and matched of district 21 and sealed department 30; Above-mentioned two realizations that are sealed and matched, have ensured the reliable sealing object for whole rotary discharge valve, and its practice effect is remarkable, finally for the normal continuous firing of body provides strong guarantee.
Claims (8)
1. the auxiliary compensation end face seal structure of gas, between that at least comprise rotary discharge valve rotor (10) and be positioned at rotary discharge valve rotor (10) end and its rotating shaft, form the end cap (20) being rotatably assorted, between the rotary discharge valve rotor tip end face of described end cap (20) and rotary discharge valve rotor (10) and/or end anchor ring, have gap; It is characterized in that: described end cap (20) is located to possess and held district (21) for what hold sealed department (30), sealed department (30) one end is resisted against the respective face place of end cap (20), the other end to rotary discharge valve rotor (10) end end face and/or postpone in anchor ring place, end and with its face against layout; Described end cap (20) is located to be also furnished with and is communicated with on external compression source of the gas and sealed department (30) and pore path (22) end cap fitting surface place, and the outgassing direction of described pore path (22) and sealed department (30) arrange in the same way for the application of force direction of rotary discharge valve rotor (10) respective face.
2. the auxiliary compensation end face seal structure of gas according to claim 1, is characterized in that: described in hold district (21) profile and be annular groove shape and arrange with rotary discharge valve rotor (10) axis coaxle; Pore path (22) be positioned at state annular groove shape hold district (21) bottom land place.
3. the auxiliary compensation end face seal structure of gas according to claim 2, is characterized in that: the district (21) that holds of described annular groove shape is oat tail groove structure; Sealed department (30) is annular seal bar, on sealed department (30) with hold that an end that district (21) coordinates is corresponding to be and to hold cell wall angle of inclination, district (21) consistent conical surface structure, form inlaid type matching relationship between the two.
4. according to the auxiliary compensation end face seal structure of the gas described in claim 2 or 3, it is characterized in that: on described sealed department (30), be provided with deep gouge (31) with holding one end end face indent that district (21) coordinates, district (21) axis coaxle that holds of deep gouge (31) axis and annular groove shape is arranged; In deep gouge (31), be embedded and be furnished with spring sheet (32), the elastic force direction of spring sheet (32) is pointed to the cell wall place, both sides that holds district (21) of annular groove shape.
5. the auxiliary compensation end face seal structure of gas according to claim 4, it is characterized in that: spring sheet (32) profile is " U " word shape and along deep gouge (31) the flute length direction layout that postpones, deep gouge (31) cross-sectional profile is corresponding is " U " word columnar structure consistent with spring sheet (32) profile, and deep gouge (31) cell wall spacing is less than spring sheet (32) maximum flexibility size; Deep gouge (31) notch profile is the closing in shape structure for positioning ejection reed (32) position.
6. according to the auxiliary compensation end face seal structure of the gas described in claim 2 or 3, it is characterized in that: it is uniform successively that between the axis that holds district (21) of described pore path (22) axis and annular groove shape, parallel and edge holds the bearing of trend in district.
7. according to the auxiliary compensation end face seal structure of the gas described in claim 2 or 3, it is characterized in that: described in hold district (21) and be arranged in and close on end face edge place, rotary discharge valve rotor (10) end on end cap.
8. the auxiliary compensation end face seal structure of gas according to claim 7, it is characterized in that: the structure that takes the form of inclined plane of the end, one end for coordinating with rotary discharge valve rotor (10) end face on sealed department (30), the cooperation place with it of rotary discharge valve rotor (10) end face is provided with chamfering (11), and formation face pushes against formula matching relationship between the two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420182425.4U CN203906787U (en) | 2014-04-15 | 2014-04-15 | Gas-assisted compensation type end face sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420182425.4U CN203906787U (en) | 2014-04-15 | 2014-04-15 | Gas-assisted compensation type end face sealing structure |
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| Publication Number | Publication Date |
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| CN203906787U true CN203906787U (en) | 2014-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420182425.4U Expired - Lifetime CN203906787U (en) | 2014-04-15 | 2014-04-15 | Gas-assisted compensation type end face sealing structure |
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| CN (1) | CN203906787U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110479973A (en) * | 2019-09-25 | 2019-11-22 | 珠海大华新材料有限公司 | The cold continuous cast crystallizer of one Albatra metal vacuum water connects sealing flange |
-
2014
- 2014-04-15 CN CN201420182425.4U patent/CN203906787U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110479973A (en) * | 2019-09-25 | 2019-11-22 | 珠海大华新材料有限公司 | The cold continuous cast crystallizer of one Albatra metal vacuum water connects sealing flange |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141029 |