CN113309732B - Gas conveying device - Google Patents
Gas conveying device Download PDFInfo
- Publication number
- CN113309732B CN113309732B CN202110602271.4A CN202110602271A CN113309732B CN 113309732 B CN113309732 B CN 113309732B CN 202110602271 A CN202110602271 A CN 202110602271A CN 113309732 B CN113309732 B CN 113309732B
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- Prior art keywords
- ring
- adjusting ring
- adjusting
- inlet
- annular
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/16—Sealings between pressure and suction sides
- F04D29/161—Sealings between pressure and suction sides especially adapted for elastic fluid pumps
- F04D29/162—Sealings between pressure and suction sides especially adapted for elastic fluid pumps of a centrifugal flow wheel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
Abstract
The invention discloses a gas conveying device, which comprises a centrifugal fan, wherein the centrifugal fan comprises an impeller (1) and a volute (2), the impeller comprises a cover plate (3), a bottom plate (4) and blades (5), an inlet ring (6) is arranged at an air inlet of the volute, and an inlet ring (8) is arranged at an air inlet of the impeller of the cover plate, and the gas conveying device is characterized in that: the inner periphery of the inlet ring (6) is connected with a first adjusting ring (7), and the first adjusting ring is adjustably connected relative to the inlet ring; the inlet ring (8) is provided with an annular adjusting groove (9) which extends along the axial direction, a second adjusting ring (10) is connected in the annular adjusting groove, and the second adjusting ring is connected with the inlet ring in an adjustable mode. The centrifugal fan has the advantages of being convenient to install and detach, convenient to adjust, good in adjusting controllability/precision, convenient to maintain and replace and capable of saving production cost, and the first adjusting ring and the second adjusting ring are arranged on the centrifugal fan.
Description
Technical Field
The invention relates to the technical field of industrial gas conveying devices/equipment, in particular to a gas conveying device.
Background
The utility model provides an industrial gas conveying device (centrifugal fan) extensively is used for various industry, production system's gas transportation, and it includes centrifugal fan, pipeline, and centrifugal fan is connected with pipeline, and centrifugal fan includes impeller, spiral case, and the impeller is installed in the spiral case, and the impeller includes apron, bottom plate, blade, and a plurality of blades are along circumference evenly distributed and connect between apron and bottom plate, and spiral case air intake department of spiral case is provided with the inlet ring, and the impeller air intake department of apron is provided with the inlet ring, sealing connection between inlet ring and the inlet ring. The existing sealing mode is fixed sealing or adjustable sealing. However, the existing adjustable seal has the problems of inconvenient installation/disassembly and adjustment, inconvenient maintenance and high cost.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a gas conveying device (centrifugal fan), which is provided with a first adjusting ring and a second adjusting ring, and has the advantages of convenient installation/disassembly, convenient adjustment, good adjustment controllability/precision, convenient maintenance/replacement, production cost saving and good sealing effect compared with the adjustable sealing at the inlet of the traditional centrifugal fan.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a gas conveying device, it includes centrifugal fan, pipeline, and centrifugal fan includes impeller (1), spiral case (2), and the impeller is installed in the spiral case, and the impeller includes apron (3), bottom plate (4), blade (5), and a plurality of blades are along circumference evenly distributed and connect between apron and bottom plate, and spiral case air intake department of spiral case is provided with inlet ring (6), and the impeller air intake department of apron is provided with inlet ring (8), its characterized in that: the inner periphery of the inlet ring (6) is connected with a first adjusting ring (7) which is adjustably connected relative to the inlet ring.
Further, the first adjusting ring (7) is provided with external threads, the inlet ring (6) is provided with internal threads, and the first adjusting ring is in threaded adjustable connection with the inlet ring.
Further, the inlet ring (8) is provided with an annular adjusting groove (9), the annular adjusting groove extends along the axial direction, a second adjusting ring (10) is connected in the annular adjusting groove, and the second adjusting ring is connected with the inlet ring in an adjustable mode.
Further, the second adjusting ring (10) is provided with an internal thread, and the internal thread of the second adjusting ring is in threaded adjustable connection with the annular adjusting groove (9).
Further, the second adjusting ring (10) is provided with external threads, and the external threads of the second adjusting ring are in threaded adjustable connection with the annular adjusting groove (9).
Further, the outer periphery of the second adjusting ring (10) is in clearance fit with the large-diameter wall of the annular adjusting groove (9), and the clearance is a tiny clearance.
Further, the first adjusting ring (7) is used for coarse adjustment, the second adjusting ring (10) is used for fine adjustment, and/or the adjusting precision of the first adjusting ring is smaller than that of the second adjusting ring, and/or the axial adjusting range of the first adjusting ring (7) is larger than that of the second adjusting ring (10).
Further, the radially inner end of the first adjusting ring (7) has an annular flange (11) extending from one side of the first adjusting ring to the impeller side.
Further, a first axial gap S is formed between the end face of the first adjusting ring (7) and the end face of the second adjusting ring (10), a radial gap r is formed between the outer peripheral face of the annular flange (11) and the inner peripheral face of the second adjusting ring (10), a second axial gap g is formed between the end face of the annular flange (11) and the end face of the inlet ring (8), and the first axial gap S, the radial gap r and the second axial gap g are sequentially connected.
Further, one end face of the first adjusting ring (7) is provided with one or more polygonal blind holes along the circumferential direction, and one end face of the second adjusting ring (10) is provided with one or more polygonal blind holes along the circumferential direction.
Compared with the adjustable seal at the inlet of the existing centrifugal fan, the gas conveying device (centrifugal fan) provided by the invention has the advantages of convenience in mounting/dismounting, convenience in adjustment, good controllability/precision in adjustment, convenience in maintenance/replacement, production cost saving and good sealing effect.
Drawings
FIG. 1 is a schematic diagram of a centrifugal fan structure according to the present invention;
fig. 2 is a schematic diagram of the centrifugal fan structure of the invention.
In the figure: impeller 1, spiral case 2, apron 3, bottom plate 4, blade 5, inlet ring 6, first adjusting ring 7, inlet ring 8, annular adjusting slot 9, second adjusting ring 10, annular flange 11.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention is described in further detail below with reference to the accompanying drawings.
As shown in fig. 1-2, a gas conveying device comprises a centrifugal fan and a conveying pipeline, the centrifugal fan comprises an impeller 1 and a volute 2, the impeller 1 is installed in the volute 2, the impeller 1 comprises a cover plate 3, a bottom plate 4 and blades 5, the blades 5 are uniformly distributed along the circumferential direction and are connected between the cover plate 3 and the bottom plate 4, an inlet ring 6 is arranged at an air inlet of the volute 2, and an inlet ring 8 is arranged at an air inlet of the impeller of the cover plate 3, and the gas conveying device is characterized in that: the inner periphery of the inlet ring 6 is connected with a first adjusting ring 7, the first adjusting ring 7 being adjustably connected with respect to the inlet ring 6.
The first adjusting ring 7 is provided with external threads, the inlet ring 6 is provided with internal threads, and the first adjusting ring 7 is in threaded adjustable connection with the inlet ring 6.
Further, the inlet ring 8 is provided with an annular adjusting groove 9, the annular adjusting groove 9 extends along the axial direction, a second adjusting ring 10 is connected in the annular adjusting groove 9, and the second adjusting ring 10 is adjustably connected relative to the inlet ring 8.
The second adjusting ring 10 is provided with an internal thread, and the internal thread of the second adjusting ring 10 is in threaded adjustable connection with the annular adjusting groove 9.
In one embodiment, the second adjusting ring 10 has an external thread, and the external thread of the second adjusting ring 10 is in threaded adjustable connection with the annular adjusting groove 9.
In another embodiment, the outer periphery of the second adjusting ring 10 is in clearance fit with the large diameter wall of the annular adjusting groove 9, the clearance being a slight clearance.
The first adjusting ring 7 is used for coarse adjustment, the second adjusting ring 10 is used for fine adjustment, and/or the adjusting accuracy of the first adjusting ring 7 is smaller than the adjusting accuracy of the second adjusting ring 10, and/or the axial adjusting range of the first adjusting ring 7 is larger than the axial adjusting range of the second adjusting ring 10.
Further, the radially inner end of the first adjusting ring 7 has an annular flange 11, the annular flange 11 extending from one side of the first adjusting ring 7 to the impeller side.
A first axial gap S is formed between the end face of the first adjusting ring 7 and the end face of the second adjusting ring 10, a radial gap r is formed between the outer peripheral face of the annular flange 11 and the inner peripheral face of the second adjusting ring 10, a second axial gap g is formed between the end face of the annular flange 11 and the end face of the inlet ring 8, and the first axial gap S, the radial gap r and the second axial gap g are sequentially connected. The first axial gap S and the second axial gap g are adjustable gaps.
One end surface of the first adjusting ring 7 is provided with one or more polygonal blind holes in the circumferential direction, and one end surface of the second adjusting ring 10 is provided with one or more polygonal blind holes in the circumferential direction for operation/adjustment with a wrench.
Compared with the adjustable seal at the inlet of the existing centrifugal fan, the gas conveying device (centrifugal fan) provided by the invention has the advantages of convenience in mounting/dismounting, convenience in adjustment, controllability in adjustment and good precision, convenience in maintenance/replacement, production cost saving and good sealing effect.
The above-described embodiments are illustrative of the present invention and are not intended to be limiting, and it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the spirit and scope of the present invention as defined by the appended claims and their equivalents.
Claims (1)
1. The utility model provides a gas delivery device, it includes centrifugal fan, pipeline, centrifugal fan includes impeller (1), spiral case (2), the impeller is installed in the spiral case, the impeller includes apron (3), bottom plate (4), blade (5), a plurality of blades are along circumference evenly distributed and connect between apron and bottom plate, spiral case air intake department of spiral case is provided with inlet ring (6), impeller air intake department of apron is provided with inlet ring (8), the inner periphery of inlet ring (6) is connected with first adjusting ring (7), first adjusting ring is adjustable for the inlet ring and is connected, first adjusting ring (7) have the external screw thread, inlet ring (6) have the internal screw thread, first adjusting ring is adjustable with inlet ring screw thread and is connected;
the method is characterized in that: the inlet ring (8) is provided with an annular adjusting groove (9) which extends along the axial direction, a second adjusting ring (10) is connected in the annular adjusting groove, and the second adjusting ring is connected with the inlet ring in an adjustable mode; the second adjusting ring (10) is provided with an internal thread, the internal thread of the second adjusting ring is in threaded adjustable connection with the annular adjusting groove (9), the second adjusting ring (10) is provided with an external thread, and the external thread of the second adjusting ring is in threaded adjustable connection with the annular adjusting groove (9);
the radially inner end of the first adjusting ring (7) is provided with an annular flange (11) which extends from one side of the first adjusting ring to the impeller side; a first axial gap S is formed between the end face of the first adjusting ring (7) and the end face of the second adjusting ring (10), a radial gap r is formed between the outer peripheral face of the annular flange (11) and the inner peripheral face of the second adjusting ring (10), a second axial gap g is formed between the end face of the annular flange (11) and the end face of the inlet ring (8), and the first axial gap S, the radial gap r and the second axial gap g are sequentially connected; the outer periphery of the second adjusting ring (10) is in clearance fit with the large-diameter wall of the annular adjusting groove (9), and the clearance is a tiny clearance;
the first adjusting ring (7) is used for coarse adjustment, the second adjusting ring (10) is used for fine adjustment, and the adjusting precision of the first adjusting ring is smaller than that of the second adjusting ring or the axial adjusting range of the first adjusting ring (7) is larger than that of the second adjusting ring (10);
one end face of the first adjusting ring (7) is provided with one or more polygonal blind holes along the circumferential direction, and one end face of the second adjusting ring (10) is provided with one or more polygonal blind holes along the circumferential direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110602271.4A CN113309732B (en) | 2021-05-31 | 2021-05-31 | Gas conveying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110602271.4A CN113309732B (en) | 2021-05-31 | 2021-05-31 | Gas conveying device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113309732A CN113309732A (en) | 2021-08-27 |
| CN113309732B true CN113309732B (en) | 2023-05-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110602271.4A Active CN113309732B (en) | 2021-05-31 | 2021-05-31 | Gas conveying device |
Country Status (1)
| Country | Link |
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| CN (1) | CN113309732B (en) |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE381497B (en) * | 1975-02-10 | 1975-12-08 | Stenberg Flygt Ab | DEVICE FOR BALANCING RADIAL FORCES IN CENTRIFUGAL PUMPS |
| CN2035013U (en) * | 1988-04-07 | 1989-03-29 | 湘潭市食品机械总厂 | Automatically adjustable end-face sealing device for beverage pump |
| CN2079230U (en) * | 1990-01-12 | 1991-06-19 | 昆明工学院 | Centrifugal fan impeller inlet sealing |
| AUPN143795A0 (en) * | 1995-03-01 | 1995-03-23 | Sykes Pumps Australia Pty Limited | Centrifugal pump |
| CN2628764Y (en) * | 2003-04-17 | 2004-07-28 | 李伯卿 | Centrifugal pump |
| CN201269216Y (en) * | 2008-11-05 | 2009-07-08 | 中国船舶重工集团公司第七○三研究所 | Centrifugal fan for switch gas circulation |
| DE102012217381A1 (en) * | 2012-09-26 | 2014-03-27 | Bosch Mahle Turbo Systems Gmbh & Co. Kg | Radial compressor for an exhaust gas turbocharger |
| CN203404122U (en) * | 2013-08-15 | 2014-01-22 | 长沙山水节能研究院有限公司 | Impeller ring sealing device of water pump and impeller ring used for impeller ring sealing device |
| CN205669506U (en) * | 2016-03-25 | 2016-11-02 | 上海水泵制造有限公司 | A kind of centrifugal pump impeller end face seal structure |
| CN105927579B (en) * | 2016-07-01 | 2019-01-04 | 南京林业大学 | A kind of centrifugal fluid transporter of non-internal leakage axial force self-balancing |
| CN106438449B (en) * | 2016-10-12 | 2019-08-02 | 浙江远邦流体科技有限公司 | Seal assembly and centrifugal pump for centrifugal pump |
| EP3805570A1 (en) * | 2019-10-09 | 2021-04-14 | Sulzer Management AG | Centrifugal pump for conveying a fluid |
| DE102019129494A1 (en) * | 2019-10-31 | 2021-05-06 | Nidec Gpm Gmbh | Coolant pump with improved gap seal |
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2021
- 2021-05-31 CN CN202110602271.4A patent/CN113309732B/en active Active
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| CN113309732A (en) | 2021-08-27 |
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