CN116357597B - Centrifugal multi-outlet ventilator - Google Patents
Centrifugal multi-outlet ventilator Download PDFInfo
- Publication number
- CN116357597B CN116357597B CN202310501015.5A CN202310501015A CN116357597B CN 116357597 B CN116357597 B CN 116357597B CN 202310501015 A CN202310501015 A CN 202310501015A CN 116357597 B CN116357597 B CN 116357597B
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- China
- Prior art keywords
- hole
- shaft
- sprocket
- movable
- movable shaft
- Prior art date
- 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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- 230000001681 protective effect Effects 0.000 claims abstract description 71
- 230000007246 mechanism Effects 0.000 claims abstract description 30
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 238000009423 ventilation Methods 0.000 abstract description 5
- 238000001816 cooling Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000012530 fluid Substances 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
- F04D29/00—Details, component parts, or accessories
- F04D29/002—Details, component parts, or accessories especially adapted for elastic fluid pumps
-
- 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
-
- 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
- F04D29/626—Mounting or removal of fans
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to the technical field of auxiliary devices of ventilation equipment, in particular to a centrifugal multi-outlet ventilator, which has a simple structure, adopts an upper protective shell and a lower protective shell to cover a belt, and the position of a motor can be moved, so that the motor is convenient to install and use; the device comprises a frame, wherein a motor and an impeller main body are arranged on the frame, and the motor is in transmission connection with an impeller of the impeller main body through a belt and a belt pulley; the belt pulley is covered by the two protective shells which are buckled together, each protective shell is driven by the driving mechanism, the two driving mechanisms are arranged in a circumferential array, the driving mechanism comprises two fixing plates which are connected with the frame and distributed on two sides of the protective shell, a first through hole and a second through hole which are communicated are formed in the fixing plates, a first movable shaft and a second movable shaft are fixed on the protective shell, and the first movable shaft and the second movable shaft penetrate through the first through hole; the first through hole is vertical, and the second through hole is obtuse with the first through hole.
Description
Technical Field
The invention relates to the technical field of auxiliary devices of ventilation equipment, in particular to a centrifugal multi-outlet ventilator.
Background
The centrifugal fan is a machine for increasing the pressure of gas and discharging the gas by means of input mechanical energy, is a driven fluid machine, and is divided into a single-outlet fan and a multi-outlet fan according to purposes. Centrifugal fans are widely used for ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and induced draft of boilers and industrial kilns; cooling and ventilation in air-conditioning devices and household appliances; drying and selecting grains; inflation and propulsion of wind tunnel wind source and air cushion ship, etc.
The motor of part of centrifugal fan is connected with the impeller by belt and belt pulley, in order to prevent the danger caused by the rotating belt, a protective shell is arranged outside the belt and belt pulley, in the prior art, the shell is mostly arranged by bolts and the like, and the disassembly and the assembly are not easy, thus the belt is inconvenient to replace; the motor is fixedly installed, the position of the motor relative to the impeller cannot be adjusted, and the distance between the motor and the impeller is required to be continuously adjusted during installation so as to adjust the belt to an optimal state, thereby bringing inconvenience.
Disclosure of Invention
In order to solve the technical problems, the invention provides the centrifugal multi-outlet ventilator which is simple in structure, the belt is covered by the upper protective shell and the lower protective shell, the motor can be moved, the motor is convenient to install, and the use is more convenient.
The invention relates to a centrifugal multi-outlet ventilator which comprises a frame, wherein a motor and an impeller main body are arranged on the frame, and the motor is in transmission connection with an impeller of the impeller main body through a belt and a belt pulley; the belt pulley is covered by the two protective shells which are buckled together, each protective shell is driven by the driving mechanism, the two driving mechanisms are arranged in a circumferential array, the driving mechanism comprises two fixing plates which are connected with the frame and distributed on two sides of the protective shell, a first through hole and a second through hole which are communicated are formed in the fixing plates, a first movable shaft and a second movable shaft are fixed on the protective shell, and the first movable shaft and the second movable shaft penetrate through the first through hole;
the first through hole is vertical, and the second through hole is obtuse with the first through hole.
The invention is further improved, the driving mechanism further comprises a first sprocket, a second sprocket and a third sprocket which are rotatably arranged on the fixed plate, a first chain is sleeved on the first sprocket, the second sprocket and the third sprocket, and a part of the first chain is parallel to the first through hole and the second through hole;
the first chain is fixedly provided with a pushing block, and the movable shaft is arranged on the pushing block.
The invention is further improved, the driving mechanism positioned below also comprises a connecting shaft rotatably arranged on the two fixed plates, and the connecting shaft is in transmission connection with the second sprocket;
the driving mechanism positioned below the connecting shaft also comprises a worm rotatably arranged on one of the fixing plates, and a worm wheel meshed with the worm is fixed on the connecting shaft.
The invention is further improved, and two chain wheels on different driving mechanisms are connected with a central shaft in a transmission way.
According to the invention, a baffle is fixed on the protective shell below the protective shell.
The invention is further improved, and the tensioning shaft is rotatably arranged in the protective shell.
The invention is further improved, a sliding block is arranged on the pushing block in a sliding way, and the sliding block is rotationally connected with the moving shaft.
The invention is further improved, and the protective shell is provided with a transparent plate.
According to the invention, a screw rod is rotatably arranged on the frame, a threaded sleeve is connected to the screw rod in a threaded manner, a movable seat is fixed on the threaded sleeve, the motor is fixed on the movable seat, and the movable seat is in sliding connection with the frame.
The invention is further improved, rollers are arranged on the first moving shaft and the second moving shaft, and the rollers move along the first through hole and the second through hole.
Compared with the prior art, the invention has the beneficial effects that: this device can be fast with two protective housing dismouting, for the mode that utilizes the bolt fastening protective housing, convenient and fast more to the protective housing that is located the below can also act as a platform and use, convenient and practical more.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a partial enlarged view of a portion a in fig. 1;
FIG. 3 is a perspective view from the left side of FIG. 1;
fig. 4 is a partial enlarged view of a portion B in fig. 3;
FIG. 5 is a schematic view of the right side view of the hidden sprocket five and chain three of FIG. 4;
FIG. 6 is a cross-sectional view of the present invention;
the reference numerals in the drawings: 1. a frame; 2. a motor; 3. an impeller main body; 4. a protective shell; 5. a fixing plate; 6. a first through hole; 7. a second through hole; 8. a sprocket I; 9. a second chain wheel; 10. a sprocket III; 11. a first chain; 12. a pushing block; 13. a connecting shaft; 14. a sprocket IV; 15. a second chain; 16. a worm; 17. a worm wheel; 18. a sprocket V; 19. a third chain; 20. a baffle; 21. a tensioning shaft; 22. a slide block; 23. a screw rod; 24. a screw sleeve; 25. a movable seat; 26. a roller; 27. moving the first shaft; 28. and a second moving shaft.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1 to 6, the centrifugal multi-outlet ventilator of the present invention comprises a frame 1, wherein a motor 2 and an impeller main body 3 are installed on the frame 1, and the motor 2 is in transmission connection with an impeller of the impeller main body 3 through a belt and a belt pulley; the belt pulley type belt pulley device comprises two protective cases 4, the two protective cases 4 are buckled together to cover a belt and a belt pulley, each protective case 4 is driven by a driving mechanism, the two driving mechanisms are arranged in a circumferential array, each driving mechanism comprises two fixing plates 5 which are connected with a frame 1 and distributed on two sides of the protective case 4, a first through hole 6 and a second through hole 7 which are communicated are formed in each fixing plate 5, a first movable shaft 27 and a second movable shaft 28 are fixed on each protective case 4, and each first movable shaft 27 and each second movable shaft 28 penetrate through the corresponding first through hole 6;
the first through hole 6 is vertical, and an included angle between the second through hole 7 and the first through hole 6 is an obtuse angle;
in the embodiment, as shown in the figure, two protective cases 4 are buckled together to form a closed space for protecting the belt and the belt pulley, and notches are formed at corresponding positions of the protective cases 4 to facilitate the installation of the impeller main shaft and the motor 2 main shaft;
as shown in fig. 2, when the two protective cases 4 are buckled together, the first movable shaft 27 and the second movable shaft 28 are both positioned on the first through hole 6, and when the protective case 4 needs to be disassembled, the driving mechanism is operated to enable the protective case 4, the first movable shaft 27 and the second movable shaft 28 to move along the first through hole 6 and then along the second through hole 7;
taking the lower protective shell 4 as an example, the first movable shaft 27 and the second movable shaft 28 move along the first through hole 6, and in the process, the first movable shaft 27, the second movable shaft 28 and the protective shell 4 vertically move downwards, so that the protective shell 4 is separated from the belt pulley and the belt and cannot touch the belt pulley or the belt;
after the protective shell 4 is separated from the belt pulley and the belt, the moving shaft II 28 positioned below is firstly moved to the through hole II 7, and then the moving shaft I27 positioned above is moved to the through hole II 7, and because the included angle between the through hole II 7 and the through hole I6 is an obtuse angle, the moving shaft I27 and the moving shaft II 28 can smoothly move to the through hole II 7, so that the protective shell 4 can move to the side surfaces of the belt and the belt pulley, the replacement space of the belt is further increased, and the protective shell 4 positioned above is similarly moved to the upper part of the frame 1;
when the first movable shaft 27 and the second movable shaft 28 of the protective shell 4 positioned below are moved to the second through hole 7, the protective shell 4 is selected relative to the initial state and is in a substantially horizontal state, so that the protective shell can be used as a platform, tools can be placed, and the belt can be replaced more conveniently;
after the belt is replaced, the driving mechanism is operated to enable the first movable shaft 27 and the second movable shaft 28 to move along the second through hole 7 and then move along the first through hole 6 until the two protective shells 4 are buckled to stop the driving mechanism.
The invention is further improved, the driving mechanism also comprises a first sprocket 8, a second sprocket 9 and a third sprocket 10 which are rotatably arranged on the fixed plate 5, the circle centers of the first sprocket 8, the second sprocket 9 and the third sprocket 10 are connected to form a triangle, a first chain 11 is sleeved on the first sprocket 8, the second sprocket 9 and the third sprocket 10, and part of the first chain 11 is parallel to the first through hole 6 and the second through hole 7;
a pushing block 12 is fixed on the first chain 11, and a moving shaft 27 is arranged on the pushing block 12;
in this embodiment, as shown in fig. 2, a part of the first chain 11 is parallel to the first through hole 6 and the second through hole 7, and the pushing block 12 is fixed on the first chain 11, so when one of the sprockets selects, the first chain 11 is driven to move, the first chain 11 moves along the first through hole 6 and the second through hole 7 with the pushing block 12, the pushing block 12 moves the first moving shaft 27 along the first through hole 6 and the second through hole 7, and since the first moving shaft 27 and the second moving shaft 28 are both fixed on the protective shell 4, the second moving shaft 28 also moves along the first through hole 6 and the second through hole 7, and the angle of the protective shell 4 is determined by the positions of the first moving shaft 27 and the second moving shaft 28;
the driving mode has the advantages of simple structure and small occupied space.
The invention is further improved, as shown in fig. 3 and 4, the driving mechanism positioned below also comprises a connecting shaft 13 rotatably arranged on the two fixed plates 5, and the connecting shaft 13 is in transmission connection with the chain wheel II 9 through a chain wheel IV 14 and a chain II 15 sleeved on the chain wheel IV 14;
the driving mechanism positioned below also comprises a worm 16 rotatably arranged on one of the fixing plates 5, and a worm wheel 17 meshed with the worm 16 is fixed on the connecting shaft 13;
in this embodiment, as shown in fig. 4, a hand wheel is installed at the end of the worm 16, and the worm 16 is rotated by rotating the hand wheel, so as to drive the worm wheel 17 and the connecting shaft 13 to rotate, and the chain two 15 and the chain wheel four 14 cooperate to drive the chain one 11 on the two side fixing plates 5 to rotate, so that the movement of the protective housing 4 can be controlled by simple rotation, and the cost is lower.
The invention is further improved, and two chain wheels I8 on different driving mechanisms are connected in a shaft transmission way;
in this embodiment, as shown in fig. 2 and 4, the central shafts of the two first sprockets 8 are in transmission connection with the third sprocket 18 through the third sprocket 19 sleeved on the first sprocket 18, so that the two driving mechanisms can synchronously act by rotating the hand wheel.
The invention is further improved, and a baffle 20 is fixed on the protective shell 4 positioned below;
in this embodiment, when the first moving shaft 27 and the second moving shaft 28 are both located on the second through hole 7, the protective housing 4 is used as a platform, and the baffle 20 can prevent the articles from falling.
The invention is further improved, as shown in fig. 6, a tensioning shaft 21 is rotatably arranged in the protective shell 4;
in this embodiment, install the tight axle 21 that rises in the protective housing 4 rotation that is located the top, when the protective housing 4 that is located the top is vertically down moved, the tight axle 21 that rises can compress tightly the belt to need not to adjust the elasticity of belt again, it is more convenient, when the protective housing 4 moves up, the tight axle 21 that rises also moves thereupon, makes the belt become loose, more convenient change.
As shown in fig. 2, 4 and 5, the pushing block 12 is provided with a sliding block 22 in a sliding manner, and the sliding block 22 is rotationally connected with a first movable shaft 27;
in the present embodiment, such a mounting manner enables the slider 22 to be changed in position with respect to the push block 12 even if the through hole one 6 and the through hole two 7 and the like start to deviate, so that the movement of the movement shaft one 27 is smoother.
The invention is further improved, and a transparent plate is arranged on the protective shell 4;
in the present embodiment, the operation in the protective case 4 is observed through the transparent plate mounted.
The invention is further improved, as shown in fig. 1 and 6, a screw rod 23 is rotatably arranged on the frame 1, a threaded sleeve 24 is connected on the screw rod 23 in a threaded manner, a movable seat 25 is fixed on the threaded sleeve 24, the motor 2 is fixed on the movable seat 25, and the movable seat 25 is in sliding connection with the frame 1;
in this embodiment, a hand wheel is installed at the end of the screw rod 23, and the screw rod 23 is rotated by rotating the hand wheel, so that the screw sleeve 24, the motor 2 and the moving seat 25 can move relative to the frame 1, and the motor 2 can be installed at a proper position more quickly.
As shown in fig. 5, the first moving shaft 27 and the second moving shaft 28 are provided with rollers 26, and the rollers 26 move along the first through hole 6 and the second through hole 7;
in this embodiment, the roller 26 moves along the first through hole 6 and the second through hole 7, and protrusions are provided at both ends of the roller 26 to prevent the roller 26 from being separated from the fixing plate 5.
When the invention is used, the screw rod 23 is rotated by rotating the hand wheel when the motor 2 is installed, so that the screw sleeve 24, the motor 2 and the movable seat 25 move relative to the frame 1, and the motor 2 can be more quickly installed at a proper position;
during normal use, the two protective shells 4 are buckled together, and the first movable shaft 27 and the second movable shaft 28 are positioned on the first through hole 6;
when the protective shell 4 needs to be disassembled, the hand wheel is rotated, the first chain 11 on the fixing plates 5 at two sides is driven to rotate under the cooperation of the second chain 15 and the fourth chain wheel 14, the first movable shaft 27 and the second movable shaft 28 move along the first through hole 6, and in the process, the first movable shaft 27, the second movable shaft 28 and the protective shell 4 vertically move downwards, so that the protective shell 4 is separated from the belt pulley and the belt, and cannot touch the belt pulley or the belt;
after the protective shell 4 is separated from the belt pulley and the belt, the moving shaft II 28 positioned below is firstly moved to the through hole II 7, and then the moving shaft I27 positioned above is moved to the through hole II 7, and because the included angle between the through hole II 7 and the through hole I6 is an obtuse angle, the moving shaft I27 and the moving shaft II 28 can smoothly move to the through hole II 7, so that the protective shell 4 can move to the side surfaces of the belt and the belt pulley, the replacement space of the belt is further increased, and the protective shell 4 positioned above is similarly moved to the upper part of the frame 1;
when the first movable shaft 27 and the second movable shaft 28 of the protective shell 4 positioned below are moved to the second through hole 7, the protective shell 4 is selected relative to the initial state and is in a substantially horizontal state, so that the protective shell can be used as a platform, tools can be placed, and the belt can be replaced more conveniently;
after the belt is replaced, the driving mechanism is operated to enable the first movable shaft 27 and the second movable shaft 28 to move along the second through hole 7 and then move along the first through hole 6 until the two protective shells 4 are buckled to stop the driving mechanism.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (8)
1. A centrifugal multi-outlet ventilator comprises a frame, wherein a motor and an impeller main body are arranged on the frame, and the motor is in transmission connection with an impeller of the impeller main body through a belt and a belt pulley; the belt pulley is characterized by further comprising two protective cases, the two protective cases are buckled together to cover the belt and the belt pulley, each protective case is driven by a driving mechanism, the two driving mechanisms are arranged in a circumferential array, each driving mechanism comprises two fixing plates which are connected with a frame and distributed on two sides of the protective case, the fixing plates are provided with a first through hole and a second through hole which are communicated, the protective cases are fixedly provided with a first movable shaft and a second movable shaft, and the first movable shaft and the second movable shaft penetrate through the first through hole;
the first through hole is vertical, and an included angle between the second through hole and the first through hole is an obtuse angle;
the driving mechanism further comprises a first sprocket, a second sprocket and a third sprocket which are rotatably arranged on the fixed plate, wherein a first chain is sleeved on the first sprocket, the second sprocket and the third sprocket, and a part of the first chain is parallel to the first through hole and the second through hole;
a pushing block is fixed on the first chain, and the movable shaft is arranged on the pushing block;
the driving mechanism positioned below also comprises a connecting shaft rotatably arranged on the two fixed plates, and the connecting shaft is in transmission connection with the second sprocket;
the driving mechanism positioned below the connecting shaft also comprises a worm rotatably arranged on one of the fixing plates, and a worm wheel meshed with the worm is fixed on the connecting shaft.
2. A centrifugal multi-outlet ventilator according to claim 1 wherein two sprockets on different drive mechanisms are connected in a center shaft drive.
3. A centrifugal multi-outlet ventilator according to claim 2, wherein the underlying protective housing has baffles secured thereto.
4. A centrifugal multi-outlet ventilator according to claim 3 wherein the protective housing is rotatably mounted with the tensioning shaft.
5. A centrifugal multi-outlet ventilator according to claim 4 wherein the push block has a slider slidably mounted thereon, the slider being rotatably coupled to the movable shaft.
6. A centrifugal multi-outlet ventilator according to claim 5 wherein the protective housing is provided with a transparent plate.
7. A centrifugal multi-outlet ventilator according to claim 6 wherein the housing is rotatably mounted with a screw having a threaded sleeve thereon, the sleeve having a movable mount secured thereto, the motor being secured to the movable mount, the movable mount being slidably coupled to the housing.
8. A centrifugal multi-outlet ventilator according to claim 7 wherein rollers are mounted on both the first and second movable shafts, the rollers being movable along the first and second through holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310501015.5A CN116357597B (en) | 2023-05-05 | 2023-05-05 | Centrifugal multi-outlet ventilator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310501015.5A CN116357597B (en) | 2023-05-05 | 2023-05-05 | Centrifugal multi-outlet ventilator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116357597A CN116357597A (en) | 2023-06-30 |
| CN116357597B true CN116357597B (en) | 2024-02-13 |
Family
ID=86939427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310501015.5A Active CN116357597B (en) | 2023-05-05 | 2023-05-05 | Centrifugal multi-outlet ventilator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116357597B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3040660A1 (en) * | 1980-10-29 | 1982-05-27 | Klöckner-Humboldt-Deutz AG, 5000 Köln | Safety guard for belt drive - has single central mounting screw for pulley and guard |
| CN209334918U (en) * | 2018-11-16 | 2019-09-03 | 湖北豪杰机电科技有限公司 | A kind of plasma cutting machine protective device |
| CN214998359U (en) * | 2021-06-15 | 2021-12-03 | 威海阿莱克斯环保科技有限公司 | Fan square box |
| CN215762315U (en) * | 2021-09-06 | 2022-02-08 | 合肥振泰暖通工程有限公司 | Centrifugal fire-fighting smoke exhaust fan |
| CN115325119A (en) * | 2022-07-11 | 2022-11-11 | 珠海格力电器股份有限公司 | Transmission device, panel assembly and air conditioner |
| CN218522834U (en) * | 2022-10-14 | 2023-02-24 | 江苏中南鼓风机有限公司 | Large fan belt cover |
| CN218696610U (en) * | 2022-09-29 | 2023-03-24 | 杭州淳一科技有限公司 | Protective door of numerical control machine tool |
-
2023
- 2023-05-05 CN CN202310501015.5A patent/CN116357597B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3040660A1 (en) * | 1980-10-29 | 1982-05-27 | Klöckner-Humboldt-Deutz AG, 5000 Köln | Safety guard for belt drive - has single central mounting screw for pulley and guard |
| CN209334918U (en) * | 2018-11-16 | 2019-09-03 | 湖北豪杰机电科技有限公司 | A kind of plasma cutting machine protective device |
| CN214998359U (en) * | 2021-06-15 | 2021-12-03 | 威海阿莱克斯环保科技有限公司 | Fan square box |
| CN215762315U (en) * | 2021-09-06 | 2022-02-08 | 合肥振泰暖通工程有限公司 | Centrifugal fire-fighting smoke exhaust fan |
| CN115325119A (en) * | 2022-07-11 | 2022-11-11 | 珠海格力电器股份有限公司 | Transmission device, panel assembly and air conditioner |
| CN218696610U (en) * | 2022-09-29 | 2023-03-24 | 杭州淳一科技有限公司 | Protective door of numerical control machine tool |
| CN218522834U (en) * | 2022-10-14 | 2023-02-24 | 江苏中南鼓风机有限公司 | Large fan belt cover |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116357597A (en) | 2023-06-30 |
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