CN112343843A - Disrotatory axial-flow type main ventilator - Google Patents
Disrotatory axial-flow type main ventilator Download PDFInfo
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- CN112343843A CN112343843A CN202011158702.4A CN202011158702A CN112343843A CN 112343843 A CN112343843 A CN 112343843A CN 202011158702 A CN202011158702 A CN 202011158702A CN 112343843 A CN112343843 A CN 112343843A
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- shaft
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- coaxially
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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
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
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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
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/053—Shafts
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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
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/053—Shafts
- F04D29/054—Arrangements for joining or assembling shafts
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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
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a counter-rotating axial-flow type main ventilator which comprises a double-shaft transmission mechanism, a main machine cylinder, a driving assembly and two impellers, wherein the main machine cylinder is horizontally arranged, the two impellers are respectively and coaxially arranged in the main machine cylinder and are distributed at intervals along the axial direction of the main machine cylinder, the driving assembly is provided with a hollow driving shaft and a transmission driving shaft which are coaxially distributed and have opposite driving directions, the transmission driving shaft is positioned in the hollow driving shaft, the driving assembly is arranged at one end of the main machine cylinder, the hollow driving shaft and the transmission driving shaft face the main machine cylinder and are coaxially distributed with the impellers, the double-shaft transmission mechanism is coaxially arranged between the driving assembly and the impellers, and is used for being in transmission connection with the hollow driving shaft and the impellers close to the driving assembly and is used. The contra-rotating axial-flow type main ventilator realizes synchronous transmission of two impellers by using the double-shaft transmission mechanism and one driving mechanism, and saves the occupied space and the manufacturing cost of the contra-rotating axial-flow type main ventilator.
Description
Technical Field
The invention relates to the technical field of a contra-rotating axial-flow main ventilator.
Background
The ventilator is a general mechanical device which converts the rotating mechanical energy into gas pressure energy and kinetic energy and conveys the gas out; an axial fan is a mechanical device that converts mechanical energy of rotation into pressure energy and kinetic energy of gas, and axially introduces and axially conveys the gas out of the fan. The contra-rotating axial-flow type ventilator converts mechanical energy into gas pressure energy and kinetic energy through a pair of impellers which rotate in opposite directions, has the characteristics of high efficiency, high pressure head and low noise, and is applied to mine ventilation.
In the conventional counter-rotating axial-flow main ventilator, two motors are arranged in a main machine cylinder body, two impellers are driven by the two motors to rotate in opposite directions respectively, when airflow in a flow channel contains combustible and explosive gases, the motors need to be in an explosion-proof type, and the cost of the explosion-proof type motors is much higher than that of common motors; the motor is arranged in the fan, so that the maintenance is extremely inconvenient; two motors need two sets of electric control devices, and the manufacturing cost is high.
Disclosure of Invention
In order to solve the technical problem, the invention provides a counter-rotating axial-flow main ventilator which can realize the simultaneous transmission of two impellers by using one driving assembly.
A contra-rotating axial-flow type main ventilator, which comprises a double-shaft transmission mechanism, a main machine barrel, a driving component and two impellers, the main machine cylinder is horizontally arranged, the two impellers are respectively and coaxially arranged in the main machine cylinder and are distributed at intervals along the axial direction of the main machine cylinder, the driving component is provided with a hollow driving shaft and a transmission driving shaft which are coaxially distributed and have opposite driving directions, the transmission driving shaft is positioned in the hollow driving shaft, the driving component is arranged at one end of the main machine cylinder body, the hollow driving shaft and the transmission driving shaft face the main machine cylinder and are coaxially distributed with the impeller, the double-shaft transmission mechanism is coaxially arranged between the driving assembly and the impeller, is used for being in transmission connection with the hollow driving shaft and the impeller close to the driving assembly, and is used for being in transmission connection with the driving shaft and the other impeller.
Preferably, biax drive mechanism includes hollow shaft, transmission shaft, hollow driven shaft, transmission driven shaft and two shaft couplings, two the shaft coupling is followed the axial interval of impeller sets up drive assembly with between the impeller, just the hollow shaft with the coaxial setting of transmission shaft is two between the shaft coupling, just the hollow shaft with the both ends of transmission shaft respectively with the homonymy the coupling joint, the hollow driven shaft with the coaxial setting of transmission driven shaft is in the impeller with be close to it between the shaft coupling, and the both ends of hollow driven shaft respectively with the shaft coupling with be close to it impeller coaxial coupling, the one end of transmission driven shaft with shaft coupling coaxial coupling, its other end pass the hollow driven shaft and with another impeller coaxial coupling.
Preferably, the shaft coupling includes two half shaft coupling bodies, every half shaft coupling body includes interior half shaft coupling body and an outer half shaft coupling body respectively, interior half shaft coupling body is the cylinder, outer half shaft coupling body includes first shaft section and the second shaft section of coaxial coupling and intercommunication, just the radius of first shaft section is greater than interior half shaft coupling body with the radius of second shaft section, interior half shaft coupling body coaxial arrangement is in the first shaft section, the both ends of hollow shaft are used for being connected with two second shaft section coaxial that are close to each other respectively, the both ends of transmission shaft are used for being connected with two interior half shaft coupling body coaxial that are close to each other respectively, hollow driving shaft and transmission driving shaft are used for being close to it respectively with be close to it second shaft section with interior half shaft coupling body coaxial coupling, hollow driven shaft with the transmission driven shaft is kept away from the both ends of impeller are used for being close to it respectively with second shaft section with interior half shaft coupling body The body is coaxially connected.
Preferably, the hollow shaft is coaxially sleeved on the transmission shaft, and two ends of the hollow shaft are respectively installed on the transmission shaft through bearings in running fit with the hollow shaft.
Preferably, the second shaft section and the inner wall of the inner semi-coupling body are provided with key slots.
Preferably, the driving assembly is disposed at one end outside the main machine cylinder.
Preferably, the driving assembly includes a motor and a transmission unit, the transmission unit has an input shaft, a hollow output shaft and a rotation output shaft, the hollow output shaft is coaxially distributed outside the rotation output shaft, the motor is disposed at one end of the main body cylinder, the transmission unit is disposed between the main body cylinder and the motor, the motor is in transmission connection with the input shaft of the main body cylinder, the hollow output shaft and the rotation output shaft are coaxially distributed with the main body cylinder, the hollow output shaft constitutes the hollow driving shaft of the driving assembly, and the rotation output shaft constitutes the transmission driving shaft of the driving assembly.
This application to revolving axial-flow type main blower utilizes above-mentioned biax drive mechanism and a actuating mechanism to realize the synchronous drive of two impellers, set up a motor and a control unit can, practiced thrift to revolving axial-flow type main blower's occupation space and manufacturing cost.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings. The detailed description of the present invention is given in detail by the following examples and the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a schematic structural view of a counter-rotating axial-flow type main fan according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a dual-shaft transmission mechanism according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a coupling according to an embodiment of the present invention.
The specific meanings of the reference numerals are:
1. a double-shaft transmission mechanism; 11. a hollow shaft; 12. a drive shaft; 13. a hollow driven shaft; 14. a driven shaft is driven; 15. a coupling; 151. an inner half coupling body; 152. a first shaft section; 153. a second shaft section; 2. a main body cylinder; 3. a drive assembly; 31. a motor; 32. a transmission unit; 4. an impeller.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The principles and features of the present invention are described below in conjunction with the accompanying fig. 1-3, which are provided by way of example only to illustrate the present invention and not to limit the scope of the present invention. The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, the counter-rotating axial-flow type main ventilator disclosed in the embodiment of the present invention includes a dual-shaft transmission mechanism 1, a main barrel 2, a driving assembly 3 and two impellers 4, wherein the main barrel 2 is horizontally disposed, the two impellers 4 are respectively coaxially mounted in the main barrel 2 and axially spaced apart from each other, the driving assembly 3 has a hollow driving shaft and a transmission driving shaft which are coaxially disposed and have opposite driving directions, the transmission driving shaft is located in the hollow driving shaft, the driving assembly 3 is disposed at one end of the main barrel 2, the hollow driving shaft and the transmission driving shaft face the main barrel 2 and are coaxially disposed with the impellers 4, the dual-shaft transmission mechanism 1 is coaxially disposed between the driving assembly 3 and the impellers 4, the dual-shaft transmission mechanism 1 is configured to drivingly connect the hollow driving shaft and the impellers 4 close to the driving assembly 3, and is used for being in transmission connection with the transmission driving shaft and the other impeller 4.
The contra-rotating axial-flow type main ventilator realizes contra-rotating operation of the two impellers 4 by utilizing a single motor, only one motor and one electric control unit are needed to be arranged for the contra-rotating axial-flow type main ventilator, and the occupied space and the manufacturing cost of the contra-rotating axial-flow type main ventilator are saved; just this application drive assembly 3 sets up 2 outsides of main engine barrel, drive assembly 3 need not to adopt explosion proof machine, further reduces the cost of disrotatory axial-flow type main blower, it is convenient simultaneously drive assembly 3's maintenance, the maintenance of being convenient for.
In this embodiment, the driving assembly 3 includes a motor 31 and a transmission unit 32, the transmission unit 32 has an input shaft, a hollow output shaft and a rotation output shaft, and the hollow output shaft is coaxially distributed outside the rotation output shaft, the motor 31 is disposed at one end of the main barrel 2, the transmission unit 32 is disposed between the main barrel 2 and the motor 31, and the motor 31 is in transmission connection with the input shaft of the main barrel 2, the hollow output shaft and the rotation output shaft are coaxially distributed with the main barrel 2, the hollow output shaft constitutes a hollow driving shaft of the driving assembly 3, and the rotation output shaft constitutes a transmission driving shaft of the driving assembly 3.
The transmission unit of this embodiment adopts the coaxial bevel gear transmission as disclosed in the chinese utility model patent with publication number CN211175237U to utilize the single motor to realize the simultaneous output of hollow output shaft and rotation output shaft, and above-mentioned coaxial bevel gear transmission can realize the syntropy or reverse output of hollow output shaft and rotation output shaft.
Preferably, the double-shaft transmission mechanism 1 comprises a hollow shaft 11, a transmission shaft 12, a hollow driven shaft 13, a transmission driven shaft 14 and two couplers 15, wherein the two couplers 15 are arranged between the driving assembly 3 and the impeller 4 at intervals along the axial direction of the impeller 4, and the hollow shaft 11 and the transmission shaft 12 are coaxially arranged between the two couplings 15, and both ends of the hollow shaft 11 and the transmission shaft 12 are respectively connected with the shaft couplings 15 at the same side, the hollow driven shaft 13 and the transmission driven shaft 14 are coaxially arranged between the impeller 4 and the coupling 15 adjacent thereto, and both ends of the hollow driven shaft 13 are respectively coaxially connected with the shaft coupling 15 and the impeller 4 close to the hollow driven shaft, one end of the transmission driven shaft 14 is coaxially connected with the shaft coupling 15, the other end of the hollow driven shaft passes through the hollow driven shaft 13 and is coaxially connected with the other impeller 4.
The hollow shaft 11 with the transmission shaft transmission is connected two the shaft coupling, drive assembly 3 and two impeller 4 respectively with be close to it the shaft coupling transmission is connected, thereby has realized drive assembly 3's hollow driving shaft and transmission driving shaft and two the transmission of impeller 4 is connected, has realized single motor to the drive of two impeller 4, has practiced thrift space and manufacturing cost.
Preferably, the coupling 15 includes two coupling body halves, each of which includes an inner coupling body 151 and an outer coupling body half, the inner coupling body 151 is cylindrical, the outer coupling body half includes a first shaft section 152 and a second shaft section 153 coaxially connected and communicated with each other, the radius of the first shaft section 152 is greater than the radius of the inner coupling body 151 and the second shaft section 153, the inner coupling body 151 is coaxially disposed in the first shaft section 152, two ends of the hollow shaft 11 are respectively coaxially connected with the two second shaft sections 153 close to each other, two ends of the transmission shaft 12 are respectively coaxially connected with the two inner coupling body halves 151 close to each other, the hollow driving shaft and the transmission driving shaft are respectively coaxially connected with the second shaft section 153 close to the hollow shaft and the inner coupling body 151 close to the hollow shaft, the two ends of the hollow driven shaft 13 and the transmission driven shaft 14 far away from the impeller 4 are respectively used for being coaxially connected with the second shaft section 153 and the inner semi-coupling body 151 close to the two ends.
The two half coupling bodies realize the transmission of the hollow driving shaft and the hollow shaft and the transmission of the transmission driving shaft and the transmission driven shaft, and the structure is simple.
Preferably, the hollow shaft 11 is coaxially sleeved on the transmission shaft 12, and two ends of the hollow shaft are respectively installed on the transmission shaft 12 through bearings in running fit with the hollow shaft.
The hollow shaft 11 rotatably mounted on the driving shaft 12 enhances the strength of the driving shaft 12, and can be used in a long-distance torque transmission scenario.
Preferably, the second shaft section 153 and the inner wall of the inner coupling body half 151 are provided with keyways.
The key slot can make the hollow shaft 11, the driven shaft 12, the hollow driving shaft, the transmission driving shaft and the hollow driven shaft 13 and the transmission driven shaft 14 respectively with correspond 15 key-type connections of shaft coupling, so that 15 transmission bigger moments of torsion of shaft coupling.
As shown, the inner coupling half body 151 and the outer coupling half body may be both flange coupling halves, or may be one or both of a flange coupling half, a tire coupling half, and an elastic pin coupling half, respectively.
Preferably, the driving assembly 3 is disposed at one end outside the main body cylinder 2.
The motor 31 of the driving assembly 3 is placed outside the main barrel body 2, so that the motor 31 is convenient to maintain, an explosion-proof motor is not required, and the cost is reduced.
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner; the present invention may be readily implemented by those of ordinary skill in the art as illustrated in the accompanying drawings and described above; however, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the scope of the invention as defined by the appended claims; meanwhile, any changes, modifications, and evolutions of the equivalent changes of the above embodiments according to the actual techniques of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (7)
1. The utility model provides a disrotatory axial-flow type main ventilation fan, its characterized in that, including biax drive mechanism (1), host barrel (2), drive assembly (3) and two impeller (4), host barrel (2) level sets up, two impeller (4) coaxial mounting respectively just along its axial interval distribution in host barrel (2), drive assembly (3) have coaxial distribution and drive direction opposite hollow driving shaft and transmission driving shaft, just the transmission driving shaft is located in the hollow driving shaft, drive assembly (3) set up the one end of host barrel (2), hollow driving shaft and transmission driving shaft orientation host barrel (2) and with impeller (4) coaxial distribution, biax drive mechanism (1) coaxial setting is in drive assembly (3) with between impeller (4), the double-shaft transmission mechanism (1) is used for being in transmission connection with the hollow driving shaft and the impeller (4) close to the driving assembly (3) and is used for being in transmission connection with the driving shaft and the other impeller (4).
2. A counter-rotating axial-flow main ventilator according to claim 1, wherein the double-shaft transmission mechanism (1) includes a hollow shaft (11), a transmission shaft (12), a hollow driven shaft (13), a transmission driven shaft (14) and two couplers (15), two couplers (15) are disposed between the driving assembly (3) and the impellers (4) along the axial interval of the impellers (4), and the hollow shaft (11) and the transmission shaft (12) are disposed coaxially between two couplers (15), and both ends of the hollow shaft (11) and the transmission shaft (12) are respectively connected with the couplers (15) at the same side, the hollow driven shaft (13) and the transmission driven shaft (14) are disposed coaxially between the impellers (4) and the couplers (15) near thereto, and both ends of the hollow driven shaft (13) are respectively connected with the couplers (15) and the impellers (4) near thereto And one end of the transmission driven shaft (14) is coaxially connected with the coupling (15), and the other end of the transmission driven shaft passes through the hollow driven shaft (13) and is coaxially connected with the other impeller (4).
3. A counter-rotating axial flow main ventilator according to claim 2, characterized in that the coupling (15) comprises two half coupling bodies, each half coupling body comprising an inner half coupling body (151) and an outer half coupling body, respectively, the inner half coupling body (151) being cylindrical, the outer half coupling body comprising a first shaft section (152) and a second shaft section (153) coaxially connected and communicating, and the radius of the first shaft section (152) being larger than the radius of the inner half coupling body (151) and the second shaft section (153), the inner half coupling body (151) being coaxially arranged within the first shaft section (152), both ends of the hollow shaft (11) being adapted to be coaxially connected with two second shaft sections (153) adjacent to each other, respectively, both ends of the drive shaft (12) being adapted to be coaxially connected with two inner half coupling bodies (151) adjacent to each other, the hollow driving shaft and the transmission driving shaft are respectively used for being coaxially connected with the second shaft section (153) close to the hollow driving shaft and the inner half coupling body (151), and the two ends of the hollow driven shaft (13) and the transmission driven shaft (14) far away from the impeller (4) are respectively used for being coaxially connected with the second shaft section (153) close to the hollow driving shaft and the inner half coupling body (151).
4. A counter-rotating axial flow main ventilator according to claim 3 characterized in that said hollow shaft (11) is coaxially fitted over said transmission shaft (12) and both ends thereof are respectively mounted on said transmission shaft (12) through bearings rotatably fitted thereto.
5. A counter-rotating axial flow main ventilator according to claim 3 in which the second shaft section (153) and the inner wall of the inner semi-coupling body (151) are splined.
6. A counter-rotating axial flow main ventilator according to claim 1 in which the drive assembly (3) is located at one end outside the main barrel (2).
7. A counter-rotating axial flow main ventilator according to claim 1 in which the drive assembly (3) comprises a motor (31) and a transmission unit (32), the transmission unit (32) having an input shaft, a hollow output shaft and a rotating output shaft, the hollow output shaft is coaxially distributed outside the rotating output shaft, the motor (31) is arranged at one end of the main machine cylinder body (2), the transmission unit (32) is arranged between the main machine cylinder (2) and the motor (31), and the motor (31) is in transmission connection with the input shaft of the main machine cylinder (2), the hollow output shaft and the rotary output shaft are coaxially distributed with the main machine cylinder body (2), the hollow output shaft forms a hollow driving shaft of the driving assembly (3), and the rotating output shaft forms a transmission driving shaft of the driving assembly (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011158702.4A CN112343843A (en) | 2020-10-26 | 2020-10-26 | Disrotatory axial-flow type main ventilator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011158702.4A CN112343843A (en) | 2020-10-26 | 2020-10-26 | Disrotatory axial-flow type main ventilator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112343843A true CN112343843A (en) | 2021-02-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011158702.4A Pending CN112343843A (en) | 2020-10-26 | 2020-10-26 | Disrotatory axial-flow type main ventilator |
Country Status (1)
| Country | Link |
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| CN (1) | CN112343843A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115126707A (en) * | 2022-06-28 | 2022-09-30 | 湖北工程学院 | External motor driven counter-rotating axial-flow type impeller main ventilator and construction method thereof |
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|---|---|---|---|---|
| CN203847411U (en) * | 2014-01-02 | 2014-09-24 | 山东科技大学 | Shaft-shared double-propeller axial flow fan |
| CN104482117A (en) * | 2014-11-22 | 2015-04-01 | 太原理工大学 | Contra-rotating impeller ventilating driving device |
| CN104989657A (en) * | 2015-06-12 | 2015-10-21 | 太原理工大学 | Contra-rotating impeller ventilation equipment driven by long shaft |
| CN105465205A (en) * | 2014-08-11 | 2016-04-06 | 孙翠翠 | Enlarged type elastic coupling for metal diaphragm |
| CN107781195A (en) * | 2017-12-03 | 2018-03-09 | 山西巨龙风机有限公司 | A kind of coal quo of local Fan for Mine of V belt translation case |
| CN109099049A (en) * | 2018-09-13 | 2018-12-28 | 安徽精科检测技术有限公司 | The long transmission shaft of rigidity |
| CN211082304U (en) * | 2019-07-08 | 2020-07-24 | 江苏犇泰泵业有限公司 | Long shaft submerged pump |
| CN211508821U (en) * | 2020-03-23 | 2020-09-15 | 中铁工程装备集团盾构制造有限公司 | Hollow shaft motor driving connecting device and hollow shaft motor |
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2020
- 2020-10-26 CN CN202011158702.4A patent/CN112343843A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203847411U (en) * | 2014-01-02 | 2014-09-24 | 山东科技大学 | Shaft-shared double-propeller axial flow fan |
| CN105465205A (en) * | 2014-08-11 | 2016-04-06 | 孙翠翠 | Enlarged type elastic coupling for metal diaphragm |
| CN104482117A (en) * | 2014-11-22 | 2015-04-01 | 太原理工大学 | Contra-rotating impeller ventilating driving device |
| CN104989657A (en) * | 2015-06-12 | 2015-10-21 | 太原理工大学 | Contra-rotating impeller ventilation equipment driven by long shaft |
| CN107781195A (en) * | 2017-12-03 | 2018-03-09 | 山西巨龙风机有限公司 | A kind of coal quo of local Fan for Mine of V belt translation case |
| CN109099049A (en) * | 2018-09-13 | 2018-12-28 | 安徽精科检测技术有限公司 | The long transmission shaft of rigidity |
| CN211082304U (en) * | 2019-07-08 | 2020-07-24 | 江苏犇泰泵业有限公司 | Long shaft submerged pump |
| CN211508821U (en) * | 2020-03-23 | 2020-09-15 | 中铁工程装备集团盾构制造有限公司 | Hollow shaft motor driving connecting device and hollow shaft motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115126707A (en) * | 2022-06-28 | 2022-09-30 | 湖北工程学院 | External motor driven counter-rotating axial-flow type impeller main ventilator and construction method thereof |
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Application publication date: 20210209 |