CN108980087B - Self-adaptive opening and closing valve device and centrifugal ventilator - Google Patents
Self-adaptive opening and closing valve device and centrifugal ventilator Download PDFInfo
- Publication number
- CN108980087B CN108980087B CN201811090998.3A CN201811090998A CN108980087B CN 108980087 B CN108980087 B CN 108980087B CN 201811090998 A CN201811090998 A CN 201811090998A CN 108980087 B CN108980087 B CN 108980087B
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- Prior art keywords
- hole
- rotating shaft
- blade
- closing valve
- valve device
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000009434 installation Methods 0.000 claims abstract description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 230000003044 adaptive effect Effects 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 238000005336 cracking Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 description 4
- 230000007306 turnover Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
- F04D25/166—Combinations of two or more pumps ; Producing two or more separate gas flows using fans
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
-
- 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
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
- F04D29/4246—Fan casings comprising more than one outlet
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Air-Flow Control Members (AREA)
Abstract
The invention provides a self-adaptive opening and closing valve device and a centrifugal ventilator, which belong to the field of engineering machinery and comprise an installation body, a blade and a rotating shaft, wherein the installation body is provided with a cavity and three through holes, the three through holes are respectively a first through hole, a second through hole and a third through hole, the rotating shaft is arranged at the joint of the first through hole and the second through hole, the blade is arranged on the rotating shaft, and the rotating blade enables the first through hole to be closed or enables the second through hole to be closed. The self-adaptive opening and closing valve device provided by the invention effectively utilizes the wind pressure of the fans to control the valve plate turning position, thereby controlling the through-flow mode, being safe, reliable and convenient to install, being capable of switching the two fan air outlets back and forth without manual operation, effectively preventing the return air phenomenon, avoiding the phenomenon that when one fan stops running when the two fans are connected in parallel, the medium is shunted from the side of the stopped fan when the other fan runs, ensuring the running performance of the fans, being free from manual operation and reducing the labor cost.
Description
Technical Field
The invention relates to the field of engineering machinery, in particular to a self-adaptive opening and closing valve device and a centrifugal ventilator.
Background
The centrifugal ventilator is an industrial device for conveying gas through rotation of an impeller and a main shaft, and because the arrangement of fans is normal at present, and the fans connected in parallel are all standby, in order to prevent return air and ensure the operation performance of the fans, valves are usually arranged in pipelines to prevent the occurrence of the above situations.
Disclosure of Invention
The invention aims to provide a self-adaptive valve opening and closing device, which is used for controlling a valve plate turnover position to control a through-flow mode by effectively utilizing wind pressure of a fan.
The invention aims to provide a centrifugal ventilator which can effectively control a through-flow mode by controlling the position of a valve turnover by using wind pressure of a fan.
The invention is realized in the following way:
based on the first object, the invention provides a self-adaptive opening and closing valve device, which comprises a mounting body, a blade and a rotating shaft, wherein a cavity and three through holes are formed in the mounting body, the three through holes are respectively a first through hole, a second through hole and a third through hole, the first through hole, the second through hole and the third through hole are respectively communicated with the cavity, the rotating shaft is arranged at the joint of the first through hole and the second through hole, the blade is arranged on the rotating shaft, the blade is positioned in the cavity, and the first through hole is closed or the second through hole is closed by rotating the blade.
The self-adaptive opening and closing valve device provided by the invention effectively utilizes the wind pressure of the fans to control the valve plate turning position, thereby controlling the through-flow mode, being safe, reliable and convenient to install, being capable of switching the two fan air outlets back and forth without manual operation, effectively preventing the return air phenomenon, avoiding the phenomenon that when one fan stops running when the two fans are connected in parallel, the medium is shunted from the side of the stopped fan when the other fan runs, ensuring the running performance of the fans, being free from manual operation and reducing the labor cost.
In one implementation of the present embodiment: the first through hole and the second through hole are symmetrically arranged along the axial lead of the third through hole.
Therefore, when the blade is turned over, the blade is more convenient, and meanwhile, the ventilation mode of wind in the third through hole, the first through hole and the second through hole can be ensured to be smooth.
In one implementation of the present embodiment: the self-adaptive opening and closing valve device further comprises two limiting blocks, the two limiting blocks are respectively arranged on the installation body, the two limiting blocks are respectively located in the first through hole and the second through hole, and the rotating shaft is located between the third through hole and the limiting blocks.
The limiting block can limit and fix the blade, and when wind passes through, the blade can be tightly pressed on the limiting block through wind pressure.
In one implementation of the present embodiment: the blade is provided with a magnetic block, and the limiting block is made of iron.
By utilizing the attraction characteristic of the magnetic block and the iron, the blade can be well connected with the limiting block when no wind pressure exists.
In one implementation of the present embodiment: the size of the first through hole is equal to that of the second through hole, the limiting blocks are annular, and the two limiting blocks are coaxially arranged with the first through hole and the second through hole respectively.
The annular limiting block can have a sealing effect, and after the blade is completely attached to the limiting block, the annular limiting block can block gaps between the blade and the second through holes and gaps between the blade and the second through holes, so that the sealing performance is improved.
In one implementation of the present embodiment: the cross section of the first through hole is circular, the cross section of the second through hole is circular, the blade is circular, the outer diameter of the limiting block is equal to the diameter of the first through hole, and the inner diameter of the limiting block is smaller than the diameter of the blade.
Therefore, tightness can be ensured through the fitting of the blades and the limiting blocks more easily.
In one implementation of the present embodiment: the diameter of the first through hole is smaller than that of the third through hole.
Thus, the wind can pass more smoothly, and the pressure of the wind on the blades is increased.
In one implementation of the present embodiment: the rotary shaft is rotationally connected with the installation body, the rotary shaft rotates around the axial lead of the rotary shaft relative to the installation body, the axial lead of the rotary shaft is perpendicular to the axial lead of the first through hole, the axial lead of the rotary shaft is perpendicular to the axial lead of the second through hole, and the blades are fixedly connected with the rotary shaft.
When the states of the first through hole and the second through hole need to be adjusted, the rotating shaft is only required to rotate, the blades can be driven to rotate to the first through hole or the second through hole, when the blades are located at the first through hole, the first through hole can be blocked, wind flows through the second through hole and the third through hole, when the blades are located at the second through hole, the blades block and seal the second through hole to flow through the first through hole and the third through hole.
In one implementation of the present embodiment: one end of the rotating shaft extends out of the installation body, and one end of the rotating shaft extending out of the installation body is provided with a handle.
The handle is arranged and then is controlled more conveniently.
Based on the second object, the invention further provides a centrifugal fan, which comprises the self-adaptive opening and closing valve device.
The centrifugal ventilator provided by the invention comprises the self-adaptive valve opening and closing device, and can safely, reliably and conveniently control the valve plate turning position by using the wind pressure of the ventilator, thereby controlling the flow way.
Compared with the prior art, the invention has the beneficial effects that:
the self-adaptive opening and closing valve device provided by the invention effectively utilizes the wind pressure of the fans to control the valve plate turning position, thereby controlling the through-flow mode, being safe, reliable and convenient to install, being capable of switching the two fan air outlets back and forth without manual operation, effectively preventing the return air phenomenon, avoiding the phenomenon that when one fan stops running when the two fans are connected in parallel, the medium is shunted from the side of the stopped fan when the other fan runs, ensuring the running performance of the fans, being free from manual operation and reducing the labor cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will briefly explain the practical drawings required in the embodiments or the prior art, and it is obvious that the drawings described below are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of an adaptive opening and closing valve device according to embodiment 1 of the present invention;
FIG. 2 is a schematic view showing a mounting body according to embodiment 1 of the present invention;
fig. 3 shows a schematic view of a stopper according to embodiment 1 of the present invention;
fig. 4 shows a schematic view of a rotating shaft according to embodiment 1 of the present invention.
In the figure: 101-a mounting body; 102-leaf; 103-limiting blocks; 104-a first through hole; 105-a second through hole; 106-a third through hole; 107-cavity; 108-rotating shaft; 109-handle.
Detailed Description
In order to improve the above problems, the present invention provides a self-adaptive opening and closing valve device, which comprises a mounting body, a blade and a rotating shaft, wherein a cavity and three through holes are formed in the mounting body, the three through holes are respectively a first through hole, a second through hole and a third through hole, the first through hole, the second through hole and the third through hole are respectively communicated with the cavity, the rotating shaft is mounted at the joint of the first through hole and the second through hole, the blade is mounted on the rotating shaft, the blade is positioned in the cavity, and the blade is rotated to enable the first through hole to be closed or enable the second through hole to be closed.
The self-adaptive opening and closing valve device provided by the invention effectively utilizes the wind pressure of the fans to control the valve plate turning position, thereby controlling the through-flow mode, being safe, reliable and convenient to install, being capable of switching the two fan air outlets back and forth without manual operation, effectively preventing the return air phenomenon, avoiding the phenomenon that when one fan stops running when the two fans are connected in parallel, the medium is shunted from the side of the stopped fan when the other fan runs, ensuring the running performance of the fans, being free from manual operation and reducing the labor cost.
The invention will now be described in further detail by way of specific examples of embodiments in connection with the accompanying drawings.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention are clearly and completely described above in conjunction with 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. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Accordingly, the above detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the 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.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be understood that the terms "orientation" or "positional relationship" are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and to simplify the description, rather than to indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.
In the present invention, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected or integral; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature may include first and second features directly contacting each other, either above or below a second feature, or through additional features contacting each other, rather than directly contacting each other. Moreover, the first feature being above, over, and on the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being below, beneath, and beneath the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is less level than the second feature.
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
Example 1
Referring to fig. 1 to 4, the embodiment provides a self-adaptive opening and closing valve device, which comprises a mounting body 101, a blade 102 and a rotating shaft 108, wherein a cavity 107 and three through holes are formed in the mounting body 101, the three through holes are a first through hole 104, a second through hole 105 and a third through hole 106 respectively, the first through hole 104, the second through hole 105 and the third through hole 106 are communicated with the cavity 107 respectively, the rotating shaft 108 is mounted at the joint of the first through hole 104 and the second through hole 105, the blade 102 is mounted on the rotating shaft 108, the blade 102 is positioned in the cavity 107, and the rotating blade 102 enables the first through hole 104 to be closed or enables the second through hole 105 to be closed.
The self-adaptive opening and closing valve device provided by the embodiment effectively utilizes the wind pressure of the fan to control the valve turnover position, so that the through-flow mode is controlled, the self-adaptive opening and closing valve device is safe and reliable and convenient to install, can switch the two fan air outlets back and forth without manual operation, effectively prevents the return air phenomenon, avoids the phenomenon that when two fans are connected in parallel, one fan stops running, and when the other fan runs, the medium is shunted from the side of the stopped fan, so that the running performance of the fan is ensured, manual operation is not needed, and the labor cost is reduced.
The first through hole 104 and the second through hole 105 are symmetrically disposed along the axis of the third through hole 106. This is more convenient when the blade 102 is turned over, and it is possible to ensure smooth flow of wind from the third through hole 106 to the first through hole 104 and the second through hole 105.
The self-adaptive opening and closing valve device further comprises two limiting blocks 103, the two limiting blocks 103 are respectively arranged on the installation body 101, the two limiting blocks 103 are respectively positioned in the first through hole 104 and the second through hole 105, and the rotating shaft 108 is positioned between the third through hole 106 and the limiting blocks 103. The limiting block 103 can limit and fix the blade 102, and when wind passes through, the blade 102 can be tightly pressed on the limiting block 103 through wind pressure.
The blade 102 is provided with a magnetic block, and the limiting block 103 is made of iron. By utilizing the attraction characteristic of the magnetic block and the iron, the blade 102 can be well connected with the limiting block 103 when no wind pressure exists.
The size of the first through hole 104 is equal to that of the second through hole 105, the limiting blocks 103 are annular, and the two limiting blocks 103 are coaxially arranged with the first through hole 104 and the second through hole 105 respectively. The annular limiting block 103 can have a sealing effect, and after the blade 102 is completely attached to the limiting block 103, the annular limiting block 103 can block gaps between the blade 102 and the second through holes 105 and gaps between the blade 102 and the second through holes 105, so that sealing performance is improved.
The cross section of the first through hole 104 is circular, the cross section of the second through hole 105 is circular, the blade 102 is circular, the outer diameter of the limiting block 103 is equal to the diameter of the first through hole 104, and the inner diameter of the limiting block 103 is smaller than the diameter of the blade 102. Thus, the tightness can be ensured by the fitting of the blade 102 and the limiting block 103 more easily.
The diameter of the first through hole 104 is smaller than the diameter of the third through hole 106. This may allow for a more comfortable passage of wind while increasing the pressure of the wind against the blades 102.
The rotating shaft 108 is rotationally connected with the mounting body 101, the rotating shaft 108 rotates around the axial lead of the rotating shaft 108 relative to the mounting body 101, the axial lead of the rotating shaft 108 is perpendicular to the axial lead of the first through hole 104, the axial lead of the rotating shaft 108 is perpendicular to the axial lead of the second through hole 105, and the blades 102 are fixedly connected with the rotating shaft 108. When the states of the first through hole 104 and the second through hole 105 need to be adjusted, the blade 102 can be driven to rotate to the first through hole 104 or the second through hole 105 only by rotating the rotating shaft 108, when the blade 102 is positioned at the first through hole 104, the first through hole 104 can be blocked, wind flows through the second through hole 105 and the third through hole 106, when the blade 102 is positioned at the second through hole 105, the blade 102 blocks and seals the second through hole 105 to flow through the first through hole 104 and the third through hole 106.
One end of the rotating shaft 108 protrudes out of the mounting body 101, and one end of the rotating shaft 108 protruding out of the mounting body 101 is provided with a handle 109. The handle 109 is arranged to be controlled more conveniently.
Example 2
The embodiment provides a centrifugal ventilator, which comprises the self-adaptive opening and closing valve device.
The centrifugal ventilator provided by the embodiment comprises the self-adaptive valve opening and closing device, and can safely, reliably and conveniently control the valve plate turning position by using the wind pressure of the fan, so that the through-flow mode is controlled.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The self-adaptive opening and closing valve device is characterized by comprising an installation body, a blade and a rotating shaft, wherein a cavity and three through holes are formed in the installation body, the three through holes are a first through hole, a second through hole and a third through hole respectively, the first through hole, the second through hole and the third through hole are respectively communicated with the cavity, the rotating shaft is arranged at the joint of the first through hole and the second through hole, the blade is arranged on the rotating shaft, the blade is positioned in the cavity, and the first through hole is closed or the second through hole is closed by rotating the blade; the first through hole and the second through hole are symmetrically arranged along the axial lead of the third through hole; the self-adaptive opening and closing valve device further comprises two limiting blocks, the two limiting blocks are respectively arranged on the installation body, the two limiting blocks are respectively positioned in the first through hole and the second through hole, and the rotating shaft is positioned between the third through hole and the limiting blocks; the blades are provided with magnetic blocks, and the limiting blocks are made of iron; the size of the first through hole is equal to that of the second through hole, the limiting blocks are annular, and the two limiting blocks are coaxially arranged with the first through hole and the second through hole respectively.
2. The adaptive opening and closing valve device according to claim 1, wherein the cross section of the first through hole is circular, the cross section of the second through hole is circular, the blade is circular, the outer diameter of the limiting block is equal to the diameter of the first through hole, and the inner diameter of the limiting block is smaller than the diameter of the blade.
3. The adaptive cracking valve apparatus of claim 2, wherein a diameter of the first through hole is smaller than a diameter of the third through hole.
4. The adaptive opening and closing valve device according to claim 1, wherein the rotating shaft is rotatably connected to the mounting body, the rotating shaft rotates around its axis relative to the mounting body, the axis of the rotating shaft is perpendicular to the axis of the first through hole, the axis of the rotating shaft is perpendicular to the axis of the second through hole, and the vane is fixedly connected to the rotating shaft.
5. The adaptive opening and closing valve device according to claim 1, wherein one end of the rotating shaft extends out of the mounting body, and one end of the rotating shaft extending out of the mounting body is provided with a handle.
6. A centrifugal fan comprising an adaptive opening and closing valve arrangement according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811090998.3A CN108980087B (en) | 2018-09-20 | 2018-09-20 | Self-adaptive opening and closing valve device and centrifugal ventilator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811090998.3A CN108980087B (en) | 2018-09-20 | 2018-09-20 | Self-adaptive opening and closing valve device and centrifugal ventilator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108980087A CN108980087A (en) | 2018-12-11 |
| CN108980087B true CN108980087B (en) | 2024-03-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811090998.3A Active CN108980087B (en) | 2018-09-20 | 2018-09-20 | Self-adaptive opening and closing valve device and centrifugal ventilator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108980087B (en) |
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| EP1715141A2 (en) * | 2005-04-21 | 2006-10-25 | Snecma | Device for the control of an air flow flowing in a rotor shaft of a turbine |
| CN203717453U (en) * | 2013-12-25 | 2014-07-16 | 宁波风机有限公司 | Fan air inlet guide blade valve |
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| CN204312382U (en) * | 2014-11-17 | 2015-05-06 | 华唯金属矿产资源高效循环利用国家工程研究中心有限公司 | The anti-inverted ventilation control gear of a kind of Mine Ventilator |
| CN104653496A (en) * | 2015-01-27 | 2015-05-27 | 浙江理工大学 | Single-double-suction adjustable centrifugal ventilator |
| CN204493244U (en) * | 2015-01-12 | 2015-07-22 | 浙江理工大学 | A kind of centrifugal ventilation fan test seal arrangement |
| CN206682040U (en) * | 2017-04-19 | 2017-11-28 | 沈阳鼓风机集团安装检修配件有限公司 | A kind of centrifugal compressed machine rotor |
| CN108087317A (en) * | 2018-01-24 | 2018-05-29 | 洛阳智超机电科技有限公司 | A kind of Mine Ventilator air pressure air flow balance switching intelligence control system |
| CN108426357A (en) * | 2018-05-15 | 2018-08-21 | 林翔 | A kind of adaptive ventiduct system auxiliary device |
| CN208885571U (en) * | 2018-09-20 | 2019-05-21 | 重庆通用工业(集团)有限责任公司 | An adaptive opening and closing valve device and centrifugal fan |
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2018
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Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1715141A2 (en) * | 2005-04-21 | 2006-10-25 | Snecma | Device for the control of an air flow flowing in a rotor shaft of a turbine |
| CN203717453U (en) * | 2013-12-25 | 2014-07-16 | 宁波风机有限公司 | Fan air inlet guide blade valve |
| CN104454609A (en) * | 2014-11-17 | 2015-03-25 | 华唯金属矿产资源高效循环利用国家工程研究中心有限公司 | Mine ventilation system capable of preventing air current from being inverted and circulated and use method |
| CN204312382U (en) * | 2014-11-17 | 2015-05-06 | 华唯金属矿产资源高效循环利用国家工程研究中心有限公司 | The anti-inverted ventilation control gear of a kind of Mine Ventilator |
| CN204493244U (en) * | 2015-01-12 | 2015-07-22 | 浙江理工大学 | A kind of centrifugal ventilation fan test seal arrangement |
| CN104653496A (en) * | 2015-01-27 | 2015-05-27 | 浙江理工大学 | Single-double-suction adjustable centrifugal ventilator |
| CN206682040U (en) * | 2017-04-19 | 2017-11-28 | 沈阳鼓风机集团安装检修配件有限公司 | A kind of centrifugal compressed machine rotor |
| CN108087317A (en) * | 2018-01-24 | 2018-05-29 | 洛阳智超机电科技有限公司 | A kind of Mine Ventilator air pressure air flow balance switching intelligence control system |
| CN108426357A (en) * | 2018-05-15 | 2018-08-21 | 林翔 | A kind of adaptive ventiduct system auxiliary device |
| CN208885571U (en) * | 2018-09-20 | 2019-05-21 | 重庆通用工业(集团)有限责任公司 | An adaptive opening and closing valve device and centrifugal fan |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108980087A (en) | 2018-12-11 |
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