CN111102995A - Air door position detection device for drying fan - Google Patents
Air door position detection device for drying fan Download PDFInfo
- Publication number
- CN111102995A CN111102995A CN201911367422.1A CN201911367422A CN111102995A CN 111102995 A CN111102995 A CN 111102995A CN 201911367422 A CN201911367422 A CN 201911367422A CN 111102995 A CN111102995 A CN 111102995A
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- clamping
- air door
- drying fan
- driving
- detection cylinder
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- 238000001514 detection method Methods 0.000 title claims abstract description 82
- 238000001035 drying Methods 0.000 title claims abstract description 40
- 230000006835 compression Effects 0.000 claims abstract description 22
- 238000007906 compression Methods 0.000 claims abstract description 22
- 238000009423 ventilation Methods 0.000 claims description 13
- 238000010926 purge Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000007423 decrease Effects 0.000 claims 1
- 238000003825 pressing Methods 0.000 abstract description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 16
- 235000017491 Bambusa tulda Nutrition 0.000 description 16
- 241001330002 Bambuseae Species 0.000 description 16
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 16
- 239000011425 bamboo Substances 0.000 description 16
- 230000009471 action Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention provides an air door position detection device for a drying fan, which belongs to the technical field of position detection and comprises a detection barrel, a proximity switch, a driving piece, a trigger block, a clamping piece and a compression spring. The upper wall of the detection cylinder is provided with a control hole. The proximity switch is fixedly arranged at the lower end in the detection cylinder. The lower end of the driving piece is arranged in the detection barrel in a sliding mode, and the upper end of the driving piece penetrates through the upper wall of the detection barrel in a sliding mode and is fixedly connected with the air door at the leakage end. The trigger block is slidably disposed between the proximity switch and the driving member. Two holders are arranged at intervals relatively, and the middle parts of the holders are hinged with the driving piece around the horizontal axis. The compression spring is arranged at the upper end between the two clamping pieces. The lower extreme of two holders slides downwards and realizes pressing from both sides tight trigger block, and two holders slide upwards, realize that the lower extreme of two holders loosens the trigger block. The air door position detection device for the drying fan solves the problem that signals of opening of the air door and opening of the air door to the maximum position cannot be acquired.
Description
Technical Field
The invention belongs to the technical field of position detection, and particularly relates to an air door position detection device for a drying fan.
Background
A drying fan of the cold rolling finishing machine is provided with an air door, and finishing liquid and surface water on the surface of the strip steel are blown by air blown out of the air door to be blown and cooled. According to the process requirement and the protection of the limit action of the equipment, the opening signal of the air door and the signal of the maximum opening position of the air door are required to be collected in the program, and because the position of the air door is also provided with tension roller equipment, a clamping plate, a hydraulic pipeline and the like in a crossed manner, the action of the air door cannot be led out in a transmission mode and the like, the collection of the opening signal of the air door and the signal of the maximum opening position of the air door cannot be realized in the prior art.
Disclosure of Invention
The invention aims to provide an air door position detection device for a drying fan, and aims to solve the problems that signals of opening of an air door and opening of the air door to the maximum position cannot be acquired.
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a throttle position detection device for drying fan, includes detection section of thick bamboo, proximity switch, driving piece, trigger block, holder and compression spring. The detection barrel is used for being fixedly arranged relative to an air door of the drying fan, the axial lead of the detection barrel is vertically arranged, and a control hole with a trapezoidal longitudinal section and gradually reducing outwards is formed in the upper wall of the detection barrel. The proximity switch is fixedly arranged at the lower end in the detection cylinder. The lower extreme of driving piece slides and locates in detecting a section of thick bamboo, the upper end slides and pierces through detect the upper wall of a section of thick bamboo and spill the end and be used for with air door fixed connection. The trigger block is arranged in the detection barrel in a sliding mode and located between the proximity switch and the driving piece. The quantity of holder is two and slides and locates in detecting a section of thick bamboo, two the holder sets up at interval relatively, the middle part of holder around horizontal axis with the driving piece is articulated. Compression spring locates two upper end between the holder, compression spring's both ends are used for outwards extrudeing two the upper end of holder. The lower extreme of holder slides along with the driving piece extrusion downwards trigger the piece, realize two the lower extreme of holder rotates the back and presss from both sides tightly trigger the piece, the upper end of holder slides upward along with the driving piece and penetrates the control hole realizes two the lower extreme of holder rotates the back and loosens trigger the piece.
As another embodiment of this application, the opposite side of holder has set firmly convex clamping part, two the lower extreme of clamping part all is equipped with first chamfer and two first chamfer sets up relatively, the upper end of trigger block has set firmly the tight post of clamp of vertical setting, press from both sides tight post and two in the air between the first chamfer is adjusted well from top to bottom, press from both sides tight post and be used for by two the medial surface of clamping part presss from both sides tightly.
As another embodiment of this application, the up end that presss from both sides tight post sets firmly along the radial outside convex first spacing portion that presss from both sides tight post, first spacing portion is used for two the clamping part presss from both sides tightly the realization is right when pressing from both sides tight post the axial of clamping part is spacing.
As another embodiment of this application, the inboard upper end of holder sets firmly the drive post that the level set up, the middle part of drive post sets firmly the edge the spacing portion of the radial outside convex second of drive post, two are located to the compression spring cover on the drive post just one is extruded respectively at compression spring's both ends the spacing portion of second.
As another embodiment of this application, the driving piece is including locating detect the driving block in a section of thick bamboo and pierce through the actuating lever of upper wall, the driving block with actuating lever fixed connection, the end of leaking of actuating lever is followed the axial of actuating lever is equipped with a plurality of connecting holes that are used for with air door fixed connection.
As another embodiment of this application, the bottom in the detection section of thick bamboo sets firmly the installed part, the fixed orifices of vertical setting is seted up to the installed part, be used for in the fixed orifices to fix proximity switch.
As another embodiment of this application, the air intake has been seted up to the lower wall of detecting a section of thick bamboo, the air intake intercommunication has the source of sweep gas, be equipped with ventilation channel in the detecting a section of thick bamboo, ventilation channel's one end intercommunication control hole, the other end communicates the air intake after passing corresponding end, the trigger block and the installed part of driving piece in proper order.
As another embodiment of this application, the installed part includes by last first end cover, with detect a coaxial first cover of section of thick bamboo and establish ring, fixed plate and with detect a coaxial second cover of section of thick bamboo that the components of a whole that can function independently set up down in proper order and establish the ring, proximity switch's middle part is fixed in on the fixed plate.
As another embodiment of this application, the lower extreme of the internal surface of a detection section of thick bamboo has along the radial inside sunken spacing groove of a detection section of thick bamboo, the installed part with the spacing groove matches the laminating.
As another embodiment of this application, detect the lower wall of a section of thick bamboo with the barrel components of a whole that can function independently setting of a section of thick bamboo detects, the bottom surface butt of lower wall has the bearing pole, the one end of bearing pole with the barrel is articulated around horizontal axis, the other end of bearing pole with the help of the hasp lock with the barrel is connected.
The air door position detection device for the drying fan, provided by the invention, has the beneficial effects that: compared with the prior art, the air door position detection device for the drying fan has the advantages that as the driving piece is fixedly connected with the air door, when the air door is closed, the lower ends of the clamping pieces slide downwards along with the driving piece to extrude the trigger block, the lower ends of the two clamping pieces clamp the trigger block under the action of the resilience force of the compression spring after rotating, when the air door is opened, the two clamping pieces clamp the trigger block to slide upwards, the proximity switch sends out a signal at the moment, when the upper end of the clamping piece slides upwards along with the driving piece and penetrates into the control hole, as the longitudinal section of the control hole is trapezoidal and gradually reduces outwards, therefore, the upper ends of the two clamping pieces can rotate inwards, the lower ends of the two clamping pieces finally rotate outwards and then the trigger block is loosened, the trigger block slides downwards under the action of gravity, and when the air door is opened to the maximum position, the proximity switch sends a signal, therefore, the invention solves the problems that the signals of the opening of the air door and the opening of the air door to the maximum position can not be acquired.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic axial view of a damper position detecting device for a drying blower according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional structural view of a damper position detecting device for a drying blower according to an embodiment of the present invention;
FIG. 3 is an enlarged schematic view of a portion A of FIG. 2;
fig. 4 is a schematic axial view of a detection cylinder in a damper position detection device for a drying fan according to an embodiment of the present invention, after a lower wall of the detection cylinder is removed;
fig. 5 is a schematic axial view of a lower wall of the damper position detecting device for a drying fan according to an embodiment of the present invention;
fig. 6 is a schematic axial structural diagram of a driving block in a damper position detecting device for a drying fan according to an embodiment of the present invention;
fig. 7 is a schematic axial view of a driving rod in a damper position detecting device for a drying blower according to an embodiment of the present invention.
In the figure: 1. a detection cylinder; 11. an upper wall; 111. a control hole; 12. a lower wall; 121. an air inlet; 122. a wiring hole; 123. a third sleeving ring; 13. a barrel; 131. a limiting groove; 132. a slideway; 2. a proximity switch; 21. a nut; 3. a drive member; 31. a drive block; 311. a first mounting hole; 312. a second mounting hole; 32. a drive rod; 321. connecting holes; 4. a trigger block; 41. a support pillar; 411. clamping the column; 412. a first limiting part; 42. sleeving a block; 43. a second chamfer; 5. a clamping member; 51. a clamping portion; 511. a first chamfer; 52. a drive column; 521. a second limiting part; 6. a compression spring; 7. a mounting member; 701. a fixing hole; 704. air holes are formed; 71. a first end cap; 72. a first nesting ring; 73. a fixing plate; 74. a second nesting ring; 8. a support rod; 81. connecting grooves; 9. a hasp lock; 10. a connecting plate.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 4 together, the damper position detecting device for a drying fan according to the present invention will now be described. The air door position detection device for the drying fan comprises a detection barrel 1, a proximity switch 2, a driving piece 3, a trigger block 4, a clamping piece 5 and a compression spring 6. The detection barrel 1 is used for being fixedly arranged relative to an air door of the drying fan, the axial lead of the detection barrel 1 is vertically arranged, and a control hole 111 with a trapezoidal longitudinal section and gradually reduced outwards is formed in the upper wall 11 of the detection barrel 1. The proximity switch 2 is fixedly arranged at the lower end in the detection cylinder 1. The lower end of the driving piece 3 is arranged in the detection barrel 1 in a sliding mode, the upper end penetrates through the upper wall 11 of the detection barrel 1 in a sliding mode, and the leakage end is fixedly connected with the air door. The trigger block 4 is slidably disposed in the detection barrel 1 and located between the proximity switch 2 and the driving member 3. The quantity of holder 5 is two and slides and locate in detecting a section of thick bamboo 1, and two holder 5 relative intervals set up, and the middle part of holder 5 is articulated around horizontal axis and driving piece 3. The compression spring 6 is arranged at the upper end between the two clamping pieces 5, and the two ends of the compression spring 6 are used for outwards extruding the upper ends of the two clamping pieces 5. The lower extreme of holder 5 extrudees trigger block 4 along with driving piece 3 lapse, realizes that the lower extreme of two holders 5 rotates the back and presss from both sides tight trigger block 4, and the upper end of holder 5 penetrates control hole 111 along with driving piece 3 upwards slides, realizes that the lower extreme of two holders 5 rotates the back and loosens trigger block 4.
In this embodiment, the detecting cylinder 1 may be fixedly connected to a connecting plate 10, and is fixedly connected to a wall or the like through the connecting plate 10.
Compared with the prior art, the air door position detection device for the drying fan, provided by the invention, has the advantages that as the driving piece 3 is fixedly connected with the air door, when the air door is closed, the lower ends of the clamping pieces 5 slide downwards along with the driving piece 3 to extrude the trigger block 4, the lower ends of the two clamping pieces 5 clamp the trigger block 4 under the action of the resilience force of the compression spring 6 after rotating, when the air door is opened, the two clamping pieces 5 clamp the trigger block 4 to slide upwards, at the moment, the approach switch 2 sends a signal, when the upper ends of the clamping pieces 5 slide upwards along with the driving piece 3 to penetrate into the control hole 111, as the longitudinal section of the control hole 111 is trapezoidal and gradually becomes smaller outwards, the upper ends of the two clamping pieces 5 can rotate inwards, finally, the lower ends of the two clamping pieces 5 rotate outwards and then release the trigger block 4, the trigger block 4 slides downwards under the action of gravity, at the moment, when the, the proximity switch 2 sends out signals, so the invention solves the problem that the signals of the opening of the air door and the opening of the air door to the maximum position can not be collected.
As a specific embodiment of the device for detecting the position of the air door of the drying fan, please refer to fig. 2 to 4, in order to realize that the lower ends of the clamping members 5 slide downwards along with the driving member 3 to press the trigger block 4, the lower ends of the two clamping members 5 rotate to clamp the trigger block 4, the opposite sides of the clamping members 5 are fixedly provided with the protruding clamping portions 51, the lower ends of the two clamping portions 51 are respectively provided with the first chamfers 511, the two first chamfers 511 are oppositely arranged, the upper end of the trigger block 4 is fixedly provided with the vertically arranged clamping column 411, the space between the clamping column 411 and the two first chamfers 511 is vertically aligned, and the clamping column 411 is used for being clamped by the inner side surfaces of the two clamping portions 51. The clamping column 411 is opened by pressing the two first chamfers 511, and when the clamping column 411 enters between the two clamping parts 51, the lower ends of the two clamping parts 51 clamp the clamping column 411 inwards due to the compression spring 6 compressing the upper ends of the two clamping pieces 5 to rotate outwards. That is, the lower ends of the two clamping pieces 5 are rotated to clamp the trigger block 4. In this embodiment, the inner surface of the detection cylinder 1 may be further provided with two slide rails 132. The two slideways 132 are respectively used for sliding one of the clamping pieces 5, so that when the two clamping pieces 5 slide upwards, the upper ends of the two clamping pieces 5 can accurately penetrate into the control hole 111, and when the two clamping pieces 5 slide downwards, the lower ends of the two clamping pieces 5 accurately clamp the clamping column 411.
Referring to fig. 2, as a specific embodiment of the device for detecting a position of a damper of a drying fan, referring to the upper end surface of a clamping column 411, a first limiting portion 412 protruding outward along a radial direction of the clamping column 411 is fixedly disposed on the upper end surface of the clamping column 411, and the first limiting portion 412 is used for realizing axial limiting of the clamping portion 51 when the two clamping portions 51 clamp the clamping column 411, so that reliability of upward sliding of the trigger block 4 along with the clamping piece 5 can be increased, that is, reliability of signal transmission of the proximity switch 2 is increased. The first limiting portion 412 is used for opening the two clamping portions 51, and when the two clamping portions 51 move downwards to the position of the clamping column 411, the two clamping portions 51 rotate inwards to clamp the clamping column 411.
Referring to fig. 3, in order to realize that the two ends of the compression spring 6 extrude the upper ends of the two clamping members 5 outwards, the upper end of the inner side of the clamping member 5 is fixedly provided with a driving column 52 horizontally arranged, the middle part of the driving column 52 is fixedly provided with a second limiting portion 521 protruding outwards along the radial direction of the driving column 52, the compression spring 6 is sleeved on the two driving columns 52, and the two ends of the compression spring 6 respectively extrude the second limiting portions 521.
Referring to fig. 2, 6 and 7, as an embodiment of the damper position detecting device for a drying fan provided by the present invention, a driving member 3 includes a driving block 31 disposed in a detecting cylinder 1 and a driving rod 32 penetrating through an upper wall 11, the driving block 31 is fixedly connected to the driving rod 32, and a plurality of connecting holes 321 for fixedly connecting to a damper are disposed at a leakage end of the driving rod 32 along an axial direction of the driving rod 32. The structure is simple and easy to process, and the arrangement of the connecting holes 321 can ensure that the detection device is suitable for different air doors of the drying machine, and the application range is wider. In this embodiment, two first mounting holes 311 that radially outwards link up may be seted up to the terminal surface of drive block 31, the middle part of two holders 5 is located one first mounting hole 311 respectively, the middle part of drive block 31 may set up horizontally second mounting hole 312, the both ends of second mounting hole 312 communicate one first mounting hole 311 respectively, be used for placing compression spring 6's middle part in the second mounting hole 312, when two holders 5 grip trigger block 4, the bottom surface of drive block 31 is used for carrying out the butt spacing to the top surface of trigger block 4, prevent that the lower extreme that two holders 5 damage trigger block 4 is not the part that is used for being gripped.
As a specific embodiment of the air door position detecting device for a drying fan provided by the present invention, please refer to fig. 2, a mounting member 7 is fixedly disposed at a bottom end of a detecting cylinder 1, the mounting member 7 is provided with a fixing hole 701 vertically disposed, and the fixing hole 701 is used for fixing a proximity switch 2. The proximity switch 2 is disposed in the fixing hole 701 to prevent the proximity switch 2 from being damaged due to the pressing or collision of the trigger block 4. In this embodiment, in order to further protect proximity switch 2, trigger block 4 includes that middle metal material's support column 41 and cover locate the outer nylon material's of support column 41 cover and establish piece 42, support column 41 establishes piece 42 fixed connection with the cover, the upper end of support column 41 extends to outside the cover establishes piece 42, support column 41 is located one section of cover establishing piece 42 top and is used for setting up to pressing from both sides tight post 411, the lower surface of support column 41 is used for contacting with the upper surface of installed part 7, do not influence the use of trigger block 4 like this, the weight of trigger block 4 has still been lightened, also reduced because the influence of the vibrations of trigger block 4 downward sliding collision installed part 7 to proximity switch 2.
Referring to fig. 1, 2 and 5, as a specific embodiment of the damper position detecting device for a drying fan provided by the present invention, the ambient temperature near the detecting cylinder 1 is high, which affects the proximity switch 2, and iron powder and accumulated dust enter the detecting cylinder 1 through the control hole 111 above, which affects the use of the device, which requires frequent wiping or replacement of parts in the detecting cylinder 1, and the working place for these operations is high, the space is narrow, and the risk coefficient is large. In order to avoid the above influence, the lower wall 12 of the detection cylinder 1 is provided with an air inlet 121, the air inlet 121 is communicated with a purging air source, a ventilation channel is arranged in the detection cylinder 1, one end of the ventilation channel is communicated with the control hole 111, and the other end of the ventilation channel sequentially penetrates through the corresponding end of the driving member 3, the trigger block 4 and the mounting member 7 and then is communicated with the air inlet 121. High-pressure gas generated by the purging gas source enters the detection cylinder 1 from the air inlet 121 and is discharged from the control hole 111 after passing through the ventilation channel, so that iron powder and accumulated dust can be prevented from entering the detection cylinder 1 from the control hole 111 above, and meanwhile, the ventilation channel can also reduce the temperature in the detection cylinder 1. In this embodiment, the purge gas source may adopt an air compressor, the ventilation channel includes a plurality of ventilation holes 704 for ventilation, which are formed on the mounting member 7 and the trigger block 4, the two ends of the trigger block 4 are both provided with the second chamfer 43, and the second chamfer 43 at the lower end is used for leaking the ventilation holes 704 of the mounting member 7. The lower wall 12 of the detection cylinder 1 can be provided with a wiring hole 122, and the electric connection wires of the proximity switch 2 can hermetically extend out of the wiring hole 122.
As a specific embodiment of the device for detecting the position of the air door of the drying fan, referring to fig. 2, in order to facilitate the installation of the proximity switch 2, the installation member 7 includes a first end cover 71, a first sleeve ring 72 coaxial with the detection tube 1, a fixing plate 73, and a second sleeve ring 74 coaxial with the detection tube 1, which are separately arranged from top to bottom, the middle portion of the proximity switch 2 is fixed on the fixing plate 73, the proximity switch 2 is inserted into the fixing hole 701, and the proximity switch 2 is fixedly connected with the fixing plate 73 through two nuts 21 on the proximity switch 2.
Referring to fig. 2 and 4, in order to facilitate installation of the installation member 7, a lower end of an inner surface of the detection cylinder 1 is provided with a limiting groove 131 which is recessed inwards along a radial direction of the detection cylinder 1, and the installation member 7 is matched and attached to the limiting groove 131.
Referring to fig. 1 to 2, as a specific embodiment of the device for detecting a position of an air door of a drying fan, a lower wall 12 of a detection cylinder 1 and a cylinder body 13 of the detection cylinder 1 are separately arranged, a support rod 8 is abutted to a bottom surface of the lower wall 12, one end of the support rod 8 is hinged to the cylinder body 13 around a horizontal axis, and the other end of the support rod 8 is connected to the cylinder body 13 by a snap lock 9. When the mounting piece 7 needs to be mounted, in the first step, the connection between the cylinder body 13 and the lower wall 12 is disconnected through the snap lock 9, then the supporting rod 8 is rotated downwards, and the lower wall 12 is taken down; secondly, placing the mounting piece 7 in the limiting groove 131, then resetting the lower wall 12, and thirdly, rotating the supporting rod 8 upwards to reset the supporting rod; finally, the cylinder 13 is connected with the lower wall 12 through the snap lock 9. In this embodiment, the ring 123 is established to the fixed third cover that is coaxial with the detection section of thick bamboo 1 of the upper surface of lower wall 12, and the outer surface and the laminating of spacing groove 131 that the ring 123 was established to the third cover are established mutually, and the upper surface that the ring 123 was established to the third cover is used for bearing installed part 7, can make things convenient for the installation location of lower wall 12 like this. In this embodiment, the snap lock 9 is hinged to the cylinder 13 around a horizontal axis, and a connecting groove 81 for connecting with the snap lock 9 is opened on the lower surface of the support rod 8.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911367422.1A CN111102995B (en) | 2019-12-26 | 2019-12-26 | Air door position detection device for drying fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911367422.1A CN111102995B (en) | 2019-12-26 | 2019-12-26 | Air door position detection device for drying fan |
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| CN111102995A true CN111102995A (en) | 2020-05-05 |
| CN111102995B CN111102995B (en) | 2024-12-27 |
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| CN201911367422.1A Active CN111102995B (en) | 2019-12-26 | 2019-12-26 | Air door position detection device for drying fan |
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