CN208509652U - A kind of fully-automatic intelligent silo air vent - Google Patents
A kind of fully-automatic intelligent silo air vent Download PDFInfo
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- CN208509652U CN208509652U CN201820810074.5U CN201820810074U CN208509652U CN 208509652 U CN208509652 U CN 208509652U CN 201820810074 U CN201820810074 U CN 201820810074U CN 208509652 U CN208509652 U CN 208509652U
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Abstract
The utility model relates to a kind of fully-automatic intelligent silo air vents, including shell, lateral arrangement has ventilation outer cylinder in the middle part of the inner cavity of the shell, and the inner cavity of the ventilation outer cylinder is set with ventilation inner cylinder, and the inner sidewall of the ventilation inner cylinder is fixedly installed with air blower by connection component；The upper end center of the shell is provided with the stifling mouth being connected to housing cavity, the top of the shell is provided with the motor housing that one end extends to hull outside by bracket, the motor housing front end is slidably fitted with mobile closure door, lateral arrangement has speed-down servo motor in the accommodating cavity of the motor housing, the output shaft of the speed-down servo motor is vertically arranged and lower end is coaxially connected with shaft, and the shaft is fixedly connected with capping by two L-type connecting plates being vertically set in shaft；Side in the accommodating cavity of the motor housing is equipped with master control borad, and the utility model has the characteristics that use manpower and material resources sparingly, improves detection efficiency, automation, intelligence.
Description
Technical field
The utility model relates to foodstuff preservation equipment technical fields, more particularly to a kind of fully-automatic intelligent silo ventilation opening
Device.
Background technique
China is a populous big country, and scientific grain storage is to ensure people's staple food supply, promotes the big of social stability
The monitoring of thing, silo temperature and humidity occupies an important position in scientific grain storage, and temperature control grain storage is that grain is made to keep one during storage
Fixed temperature and humidity is horizontal, achievees the purpose that safe storage, and temperature control grain storage is able to maintain the preferable quality of grain, is more advanced at present
A kind of safety, economic, green grain storage technology, it has also become the new direction of current science grain storage technology development.
The capping of traditional silo ventilation opening is opened by manpower, since closing generates negative pressure state for a long time in silo, is made
Air outlet capping opening becomes difficult, in addition the Temperature and Humidity in silo usually passes through artificial detection, due to detection and
It controls temperature and humidity not in time, often results in the grain loss in silo, it is therefore desirable to optimize a kind of fully-automatic intelligent silo ventilation
Mouth device.
Summary of the invention
The technical problem to be solved by the utility model is to provide a kind of fully-automatic intelligent silo air vents, have section
Human-saving material resources improve the features such as detection efficiency, automation, intelligence.
The technical scheme adopted by the utility model to solve the technical problem is as follows: providing a kind of fully-automatic intelligent silo ventilation
Mouth device, including shell, the shell are the square box structure that one end is equipped with opening, one opposite with opening of the shell
End center is provided with ventilation hole, and the ventilation outer cylinder that lateral arrangement has one end to dock with ventilation hole in the middle part of the inner cavity of the shell is described
The inner cavity of ventilation outer cylinder is set with ventilation inner cylinder, and the inner sidewall of the ventilation inner cylinder is fixedly installed with air blast by connection component
Rotation axis one end of machine, the air blower extends to the direction of ventilation hole and is equipped with leaf in the elongated end of air blower rotation axis
Wheel；The upper end center of the shell is provided with the stifling mouth being connected to housing cavity, and the top of the shell is located at stifling mouth
Side is provided with the motor housing that one end extends to hull outside by bracket, and two insides up and down of the motor housing front end are horizontal respectively
To track groove is provided with, mobile closure door is slidably fitted in the track groove, there is lateral arrangement in the accommodating cavity of the motor housing
The output shaft of speed-down servo motor, the speed-down servo motor is vertically arranged and lower end is coaxially connected with shaft, the shaft with
It is rotatablely connected between shell by being arranged symmetrically in two bearing blocks of hull outside wall, the shaft is turned by being vertically set on
Two L-type connecting plates on axis are fixedly connected with capping；Side in the accommodating cavity of the motor housing is equipped with master control borad, described
The detection signal input part of master control borad is connected with the temperature sensor and humidity sensor being arranged in silo respectively by signal wire
It connects, the control signal output of the master control borad passes through relay of the signal wire respectively with speed-down servo motor and control air blower
Connection, the top of the lateral wall of the motor housing are equipped with display screen, shown on the display screen temperature data in silo and
Humidity data, the arranged beneath of the display screen have multiple control buttons.
As a kind of supplement to technical solution described in the utility model, the open end of the shell be surrounded by
Outer horizontal-extending protruding portion is equipped with sealing strip along protruding portion on the protruding portion, the shell it is opposite to the open end
One end is surrounded by outside vertically extending mounting portion, is laid with a circle sealing strip along protruding portion, improves the close of air vent
Feng Xing, mounting portion are bonded with silo wall outer side wall, mounting portion and wall are passed through by fastener, so that shell is fixed on silo
On wall, and then shell is facilitated to install.
As a kind of supplement to technical solution described in the utility model, the inner cavity of the ventilation outer cylinder is set with ventilation
The same end outer edge of inner cylinder and ventilation outer cylinder and inner cylinder of divulging information is respectively equipped with outside the first vertically extending fixed part of a circle
With the second fixed part, consolidated between the ventilation outer cylinder and ventilation inner cylinder by sequentially passing through the second fixed part and first from the front to the back
The fastener for determining portion is fixedly connected, and fixed part is arranged in one end of ventilation inner cylinder, installation easy to disassemble ventilation inner cylinder, and then conveniently
The air blower of tube inner chamber in replacement ventilation.
As a kind of supplement to technical solution described in the utility model, the connection component includes being in tilted layout in logical
The fixed plate of tube inner chamber in wind, three vertical plates between the lower end of the fixed plate and interior medial wall of the tube of divulging information by being arranged side by side
In connection, the fixed plate two sides and ventilation between medial wall of the tube and three vertical plate lower ends and interior medial wall of the tube of divulging information
It is fixedly connected by welding, fixed plate and three vertical plates strengthen the bonding strength between ventilation inner cylinder and air blower.
As a kind of supplement to technical solution described in the utility model, the two sides up and down of the mobile closure door are horizontal respectively
To the sliding block cooperated with two track grooves is disposed with, a middle side part of the mobile closure door front end is provided with handle, mobile closure door
Can be with sealed electric-motor case along track groove sliding, and then protect the motor and master control borad in motor housing.
As a kind of supplement to technical solution described in the utility model, the shaft upper end center is equipped with round recessed
Slot, the output shaft of the speed-down servo motor be downwardly into circular groove and the output shaft lower end of servo motor and shaft it
Between be fixedly connected by being horizontally through the bolt of groove two sidewalls, watched by designing circular groove in shaft upper end center with deceleration
The output shaft lower end cooperation of motor is taken, so that it is easy for installation, to neutral good.
As a kind of supplement to technical solution described in the utility model, the multiple control button includes control servo
Opening button, close button and the hand for opening button, freeze button, close button and control air blower of decelerating motor/from
Switching push button can switch manual and full-automatic two kinds of operation modes by pressing hand/adaptive switched button, meet equipment in difference
It is used under environment.
As a kind of supplement to technical solution described in the utility model, the side of the motor housing be located at display screen and
Control button is surrounded by protection edge, and protection is along for avoiding display screen and control button from being destroyed.
As a kind of supplement to technical solution described in the utility model, the servo deceleration motor control capping is opened
Maximum angle be 120o.
As a kind of supplement to technical solution described in the utility model, the lateral wall of the shell has been vertically arranged temperature
Degree meter, thermometer can be with the temperature in the real-time display silo external world.
The utility model has the advantages that passing through speed-down servo motor the utility model relates to a kind of fully-automatic intelligent silo air vent
Control capping opens and closes, and solves the problems, such as to generate artificial bad opening capping when negative pressure in silo；By being arranged in grain
Collected information is passed to master control borad and shown by temperature sensor and humidity sensor in storehouse by signal wire to be shown
On screen, master control borad compares the upper limit value of collected temperature and humidity information and the temperature and humidity set, when adopting
When the temperature or humidity collected is more than the upper limit value of setting, sent out by the control output end of logical operation master control borad by signal wire
Open instructions is to speed-down servo motor and the relay for controlling air blower out, and then covers and automatically open, and air blower, which is opened, makes work,
When temperature and humidity is adjusted to the preset lower limit value of master control borad program, master control borad issues instruction and closes servo motor and control
The relay of air blower；Control button by being arranged in motor housing side can also manually control servo motor and air blower
It opens；It is connect, the drug of atomization can be delivered in silo with the stifling mouth of shell upper end by external pipe；By that will pacify
Ventilation inner cylinder equipped with air blower disassembles, and can carry out gravity-flow ventilation by ventilation outer cylinder；The utility model, which has, to be saved
Manpower and material resources improve the features such as detection efficiency, automation, intelligence.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the partial view of Fig. 1；
Fig. 3 is the structural schematic diagram of the motor housing of the utility model；
Fig. 4 is the assembling schematic diagram between the ventilation outer cylinder of the utility model and inner cylinder of divulging information；
Fig. 5 is the structural schematic diagram of the shell of the utility model.
Appended drawing reference: 1, shell, 2, ventilation hole, 3, ventilation outer cylinder, 4, ventilation inner cylinder, 5, air blower, 6, impeller, 7, deceleration
Servo motor, 8, shaft, 9, bearing block, 10, L-type connecting plate, 11, capping, 12, master control borad, 13, display screen, 14, protruding portion,
15, protruding portion, the 16, first fixed part, the 17, second fixed part, 18, fixed plate, 19, vertical plate, 20, track groove, 21, mobile envelope
Door, 22, sliding block, 23, protection edge, 24, bolt, 25, thermometer, 26, control button, 27, handle, 28, stifling mouth, 29, bracket,
30, motor housing.
Specific embodiment
The present invention will be further illustrated below in conjunction with specific embodiments.It should be understood that these embodiments are merely to illustrate this
Utility model rather than limitation the scope of the utility model.In addition, it should also be understood that, in the content for having read the utility model instruction
Later, those skilled in the art can make various changes or modifications the utility model, and such equivalent forms equally fall within this Shen
It please the appended claims limited range.
The embodiments of the present invention is related to a kind of fully-automatic intelligent silo air vent, as shown in Figs. 1-5, including
Shell 1, the shell 1 are the square box structure that one end is equipped with opening, and one end center opposite with being open of the shell 1 is opened
There are ventilation hole 2, the ventilation outer cylinder 3 that lateral arrangement has one end to dock with ventilation hole 2 in the middle part of the inner cavity of the shell 1, the ventilation
The size of one end of outer cylinder 3 is greater than the size of ventilation hole 2 and by welding coaxially connects ventilation outer cylinder 3 with ventilation hole 2
It connects, the inner cavity of the ventilation outer cylinder 3 is set with ventilation inner cylinder 4, and the inner sidewall of the ventilation inner cylinder 4 is pacified by the way that connection component is fixed
Equipped with air blower 5, the pedestal of the air blower 5 is fixedly connected by fastener with connection component, the rotation axis of the air blower 5
One end extends to the direction of ventilation hole 2 and is equipped with impeller 6 in the elongated end of 5 rotation axis of air blower；In the upper end of the shell 1
The heart is provided with the stifling mouth 28 being connected to 1 inner cavity of shell, and external pipe is connect by ring flange by mist body drug with stifling mouth 28
It is delivered in silo by external pipe and stifling mouth 28, the top of the shell 1 is provided with one end by bracket 29 and extends to
The motor housing 6 in 1 outside of shell, there are two Z-shaped plates positioned opposite to form for the bracket 29, above and below 30 front end of motor housing
Two insides are horizontally arranged with track groove 20 respectively, and mobile closure door 21, the motor housing 30 are slidably fitted in the track groove 20
Accommodating cavity in lateral arrangement have speed-down servo motor 7, the output shaft of the speed-down servo motor 7 is vertically arranged and lower end is coaxial
It is connected with shaft 8, is connected between the shaft 8 and shell 1 by being arranged symmetrically in two bearing blocks 9 of 1 lateral wall of shell and rotating
It connects, the bearing inner race of described two bearing blocks 9 is coaxially arranged, and the shaft 8 is from top to bottom in the bearing of two bearing blocks 9
Circle is interference fit between the shaft 8 and the bearing inner race of bearing block 9, and the shaft 8 is by being vertically set in shaft 8
Two L-type connecting plates 10 be fixedly connected with capping 11, one end of the L-type connecting plate 10 and shaft 8 are by welding
Connection, two adjacent inner faces of the bending place of the L-type connecting plate 10 respectively with capping 11 liang of adjacent lateral walls be bonded and
Binding face is fixedly connected by welding or by fastener；Side in the accommodating cavity of the motor housing 6 is equipped with master control borad
12, the detection signal input part of the master control borad 12 by signal wire respectively with the temperature sensor and humidity that are arranged in silo
The control signal output of sensor connection, the master control borad 12 is roused with speed-down servo motor 7 and control respectively by signal wire
The relay of blower 5 connects, the control signal output of the master control borad 12 can also by signal wire respectively be arranged in grain
Cooling system in storehouse is connected with heating system, and the cooling system includes the cooling pipe being layed in silo, the cooling
The entrance of pipeline is provided with the solenoid valve being connected with the control signal output of master control borad 12, and the heating system includes being arranged in
Resistance heating wire in silo is disposed with the control signal output phase with master control borad 12 on the circuit of the resistance-type heater strip
Relay even, the top of the lateral wall of the motor housing 6 are equipped with display screen 13, show in silo on the display screen 13
Temperature data and humidity data, the arranged beneath of the display screen 13 have multiple control buttons 26.
The open end of the shell 1 is surrounded by outside horizontal-extending protruding portion 14, along prominent on the protruding portion 14
Portion 14 is equipped with sealing strip out, and one end opposite to the open end of the shell 1 is surrounded by outside vertically extending installation
Portion 15.
The inner cavity of the ventilation outer cylinder is set with ventilation inner cylinder 4 and the same end outer edge of divulge information outer cylinder 3 and inner cylinder 4 of divulging information
Be respectively equipped with a circle vertically extending the first fixed part 16 and the second fixed part 17 outward, the ventilation outer cylinder 3 with divulge information in
It is fixedly connected by sequentially passing through the second fixed part 17 from the front to the back with the fastener of the first fixed part 16 between cylinder 4.
The connection component includes being in tilted layout in the fixed plate 18 of ventilation 4 inner cavity of inner cylinder, the lower end of the fixed plate 18
It is connect between ventilation 4 inner sidewall of inner cylinder by three vertical plates 19 being arranged side by side, 18 two sides of fixed plate and ventilation inner cylinder 4
It is fixedly connected by welding between inner sidewall and three 19 lower ends of vertical plate and ventilation 4 inner sidewall of inner cylinder.
Lateral arrangement has the sliding block 22 with the cooperation of two track grooves 20 respectively for the two sides up and down of the mobile closure door 21, described
One middle side part of 21 front ends of mobile closure door is provided with handle 27.
8 upper end center of shaft is equipped with circular groove, and the output shaft of the speed-down servo motor 7 is downwardly into round recessed
It is fixedly connected in slot and between the output shaft and shaft 8 of servo motor 7 by being horizontally through the bolt 24 of groove two sidewalls.
The multiple control button 26 include the control opening button of servo deceleration motor 7, freeze button, close button and
Control opening button, close button and hand/adaptive switched button of air blower 5.
The side of the motor housing 30 is located at display screen 13 and being surrounded by for control button 26 is protected along 23.
The maximum open angle of the control of servo deceleration motor 7 capping 11 is 120o.
The lateral wall of the shell 1 has been vertically arranged thermometer 25.
The application method and working principle of the utility model:
When using automatic control mode, pressing hand/adaptive switched button first switches to fully automatic mode, in silo
Temperature and humidity data will test information by temperature sensor and humidity sensor and be sent to master control borad 12 and detect
Temperature and humidity data real-time display is on display screen 13, the temperature signal and moisture signal and the storage of master control borad 12 that detect
Analog information compares, when the temperature and humidity in silo is more than preset upper limit value in 12 program of master control borad, master control borad
12 control signal output by signal wire issue open instructions to speed-down servo motor 7 and control air blower 5 relay,
And then the output shaft of speed-down servo motor 7 drives shaft 8 to rotate, shaft 8 is connected by two L-types being vertically set in shaft 8
Fishplate bar 10 drives capping 11 until being opened to maximum angle, meanwhile, the work impeller 6 of air blower 5 rotates, and then passes through ventilation
Inner cylinder 4 carries out the extraneous air heat exchange with silo, grain temperature and humidity is reduced, when the temperature and humidity of silo is reduced to
Within limit value, by above-mentioned control mode, master control borad 12 issues out code to speed-down servo motor 7 and control air blower 5
Relay, and then air blower 5 close, capping 11 close simultaneously with 1 open end of shell be fitted close.
When using MANUAL CONTROL mode, pressing hand/adaptive switched button switches to manual mode first, and pressing control is slowed down
The opening button of servo motor 7, speed-down servo motor 7 start and then drive capping 11 to open by shaft 8, open in capping 11
In the process, the opening action of capping 11 can be suspended by the freeze button of pressing control speed-down servo motor 7 at any time, then pressed
The freeze button of a secondary control speed-down servo motor 7 is pressed, speed-down servo motor 7, which is again started up, to be continued to drive capping from stop position
11 open to maximum angle, the close button of pressing control speed-down servo motor 7, and capping 11 is inwardly rotated up to shaft 8
It closes, the closing that the freeze button that can equally, in closing process press control speed-down servo motor 7 at any time stops covering 11 is dynamic
Make, the freeze button of pressing control speed-down servo motor 7, capping are started turning from stop position up to completely closing again；It is logical
The opening button and close button of crossing pressing control air blower 5 carry out the opening and closing of control air blower 5.
Claims (10)
1. a kind of fully-automatic intelligent silo air vent, it is characterised in that: including shell (1), the shell (1) sets for one end
There is the square box structure of opening, one end center opposite with being open of the shell (1) is provided with ventilation hole (2), the shell
(1) the ventilation outer cylinder (3) that lateral arrangement has one end to dock with ventilation hole (2) in the middle part of inner cavity, the inner cavity of ventilation outer cylinder (3)
It is set with ventilation inner cylinder (4), the inner sidewall of ventilation inner cylinder (4) is fixedly installed with air blower (5) by connection component, described
Rotation axis one end of air blower (5) extends to the direction of ventilation hole (2) and is equipped with leaf in the elongated end of air blower (5) rotation axis
It takes turns (6)；The upper end center of the shell (1) is provided with the stifling mouth (28) being connected to shell (1) inner cavity, the shell (1)
Top, which is located at the side of stifling mouth (28) and is provided with one end by bracket (29), extends to motor housing (30) on the outside of shell (1),
Two insides up and down of motor housing (30) front end are horizontally arranged with track groove (20) respectively, sliding peace in the track groove (20)
It seals up a door (21) equipped with mobile, there is speed-down servo motor (7) lateral arrangement in the accommodating cavity of the motor housing (30), the deceleration is watched
The output shaft for taking motor (7) is vertically arranged and lower end is coaxially connected with shaft (8), is passed through between the shaft (8) and shell (1)
It is arranged symmetrically in two bearing blocks (9) rotation connection of shell (1) lateral wall, the shaft (8) is by being vertically set on shaft
(8) two L-type connecting plates (10) on are fixedly connected with capping (11)；Side installation in the accommodating cavity of the motor housing (30)
Have master control borad (12), the detection signal input part of the master control borad (12) by signal wire respectively with the temperature that is arranged in silo
Sensor is connected with humidity sensor, the control signal output of the master control borad (12) by signal wire respectively with speed-down servo
Motor (7) is connected with the relay of control air blower (5), and the top of the lateral wall of the motor housing (30) is equipped with display screen
(13), the temperature data and humidity data in silo, the lower section cloth of the display screen (13) are shown on the display screen (13)
It is equipped with multiple control buttons (26).
2. fully-automatic intelligent silo air vent according to claim 1, it is characterised in that: shell (1) is opened
Mouthful end is surrounded by outside horizontal-extending protruding portion (14), is equipped with sealing along protruding portion (14) on the protruding portion (14)
Item, one end opposite to the open end of the shell (1) are surrounded by outside vertically extending mounting portion (15).
3. fully-automatic intelligent silo air vent according to claim 1, it is characterised in that: the ventilation outer cylinder (3)
Inner cavity be set with ventilation inner cylinder (4) and divulge information outer cylinder (3) and ventilation inner cylinder (4) the same end outer edge be respectively equipped with a circle to
Outer vertically extending first fixed part (16) and the second fixed part (17), lead between the ventilation outer cylinder (3) and ventilation inner cylinder (4)
It crosses and sequentially passes through the second fixed part (17) from the front to the back and be fixedly connected with the fastener of the first fixed part (16).
4. fully-automatic intelligent silo air vent according to claim 1, it is characterised in that: the connection component includes
It is in tilted layout in the fixed plate (18) of ventilation inner cylinder (4) inner cavity, the lower end of the fixed plate (18) and ventilation inner cylinder (4) inner sidewall
Between by the connection of three vertical plates (19) being arranged side by side, between fixed plate (18) two sides and inner cylinder (4) inner sidewall of divulging information
And it is fixedly connected by welding between three vertical plate (19) lower ends and ventilation inner cylinder (4) inner sidewall.
5. fully-automatic intelligent silo air vent according to claim 1, it is characterised in that: the mobile closure door (21)
Lateral arrangement has the sliding block (22) with the cooperation of two track grooves (20) respectively for two sides up and down, described mobile closure door (21) front end
One middle side part is provided with handle (27).
6. fully-automatic intelligent silo air vent according to claim 1, it is characterised in that: shaft (8) upper end
Center is equipped with circular groove, and the output shaft of the speed-down servo motor (7) is downwardly into circular groove and speed-down servo electricity
It is fixedly connected between the output shaft of machine (7) and shaft (8) by being horizontally through the bolt (24) of groove two sidewalls.
7. fully-automatic intelligent silo air vent according to claim 1, it is characterised in that: the multiple control button
It (26) include the opening of the opening button for controlling speed-down servo motor (7), freeze button, close button and control air blower (5)
Button, close button and hand/adaptive switched button.
8. fully-automatic intelligent silo air vent according to claim 7, it is characterised in that: the motor housing (30)
Side is located at display screen (13) and being surrounded by for control button (26) is protected along (23).
9. fully-automatic intelligent silo air vent according to claim 8, it is characterised in that: the speed-down servo motor
(7) the maximum open angle of control capping (11) is 120o.
10. fully-automatic intelligent silo air vent according to claim 1, it is characterised in that: outside the shell (1)
Side wall has been vertically arranged thermometer (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820810074.5U CN208509652U (en) | 2018-05-29 | 2018-05-29 | A kind of fully-automatic intelligent silo air vent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820810074.5U CN208509652U (en) | 2018-05-29 | 2018-05-29 | A kind of fully-automatic intelligent silo air vent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208509652U true CN208509652U (en) | 2019-02-19 |
Family
ID=65339590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820810074.5U Active CN208509652U (en) | 2018-05-29 | 2018-05-29 | A kind of fully-automatic intelligent silo air vent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208509652U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108718724A (en) * | 2018-05-29 | 2018-11-02 | 虞城县明强仓储设备有限公司 | A kind of fully-automatic intelligent silo air vent |
| CN111742726A (en) * | 2020-06-24 | 2020-10-09 | 浙江穗丰机电科技有限公司 | Easy open and close ventilation opening |
-
2018
- 2018-05-29 CN CN201820810074.5U patent/CN208509652U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108718724A (en) * | 2018-05-29 | 2018-11-02 | 虞城县明强仓储设备有限公司 | A kind of fully-automatic intelligent silo air vent |
| CN111742726A (en) * | 2020-06-24 | 2020-10-09 | 浙江穗丰机电科技有限公司 | Easy open and close ventilation opening |
| CN111742726B (en) * | 2020-06-24 | 2021-07-09 | 浙江穗丰机电科技有限公司 | Easy open and close ventilation opening |
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