CN109571768A - A kind of cement feeding device reducing cement fugitive dust - Google Patents
A kind of cement feeding device reducing cement fugitive dust Download PDFInfo
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- CN109571768A CN109571768A CN201811625229.9A CN201811625229A CN109571768A CN 109571768 A CN109571768 A CN 109571768A CN 201811625229 A CN201811625229 A CN 201811625229A CN 109571768 A CN109571768 A CN 109571768A
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- Prior art keywords
- light
- continuous work
- work task
- cement
- operating frequency
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/04—Supplying or proportioning the ingredients
- B28C7/06—Supplying the solid ingredients, e.g. by means of endless conveyors or jigging conveyors
- B28C7/10—Supplying the solid ingredients, e.g. by means of endless conveyors or jigging conveyors by means of rotary members, e.g. inclinable screws
Abstract
The invention belongs to apparatus for building technical fields, disclose a kind of cement feeding device for reducing cement fugitive dust, it is provided with auger conveyor, the auger conveyor is mounted on the lowermost end of equipment, dry powder can supporting leg is installed, the upper support ladle bowl of the dry powder can supporting leg is equipped on the right side of the auger conveyor and mixes rope above the auger conveyor, channel steel is installed below the ladle bowl, between the auger conveyor and channel steel is installed communicating pipe.The present invention carries out the feeding of cement using auger conveyor and channel steel, reduces the fugitive dust of cement.
Description
Technical field
The invention belongs to apparatus for building technical field more particularly to a kind of cement feeding devices for reducing cement fugitive dust.
Background technique
Currently, the prior art commonly used in the trade is such that
Currently, with the development of the times, more and more buildings use concrete, and concrete is by blender by cement
Sand is mixed, be stirred after obtained from, but polluted during existing concrete batching it is larger, it is dusty,
So that the environment in building site is more severe, the health of operator is influenced.
In conclusion problem of the existing technology is:
Existing technology causes dust from flying during conveying, endangers operator's health.
The conveying speed of the prior art not can be effectively controlled, and cause cement feeding uneven, influence quality, while cannot be right
Abnormal speed is alarmed.
Summary of the invention
In view of the problems of the existing technology, the present invention provides a kind of cement feeding devices for reducing cement fugitive dust.
The invention is realized in this way a kind of cement feeding device for reducing cement fugitive dust includes: auger conveyor, dry powder
Tank supporting leg mixes rope, ladle bowl, channel steel, communicating pipe.
The auger conveyor is mounted on the lowermost end of equipment, and dry powder can branch is equipped with above the auger conveyor
Leg, the upper support ladle bowl of the dry powder can supporting leg are equipped on the right side of the auger conveyor and mix rope, under the ladle bowl
Side is equipped with channel steel, is equipped with communicating pipe between the auger conveyor and channel steel.
Further, the auger conveyor is connected to agitating device.
Further, the rope of mixing is connected and fixed device.
Further, for auger conveyor by signal wire link control module, the control method of control module includes: setting control
One threshold speed of the integrated central processing unit of molding block；
Judge that a maximum can handle load capacity according to threshold speed；
Multiple first tasks are combined into one first continuous work task according to platform power administrative skill is collected；
Judge whether a load capacity of the first continuous work task is greater than maximum and can handle load capacity；
It, will be in the first continuous work task when the load capacity of the first continuous work task, which is greater than maximum, to handle load capacity
One of overload part the first task remove the first continuous work task；
When receiving the first continuous work task, central processing unit is switched into an operation mould by a suspend mode
Formula, and the first continuous work task of processing；And after the completion of the processing of the first continuous work task, central processing unit is set
For suspend mode.
Further, the operating frequency of central processing unit has a normal operating frequency and method under general operation
Further include:
One first operating frequency is determined according to the load capacity of the first continuous work task and threshold speed；
And when central processing unit switches to operation mode, by the operating frequency of central processing unit by normal operating
Frequency upgrading handles the first continuous work task to the first operating frequency, and by the first operating frequency；
Wherein the working frequency of the first operating frequency is higher than the working frequency of normal operating frequency；
Central processing unit controls method further include:
After the processing of the first continuous work task is completed and central processing unit enters suspend mode, according to collecting platform
First task of multiple second tasks and part of overloading is combined into one second continuous work by power management techniques
Task.
Further, when receiving the second continuous work task, central processing unit is switched into operation by suspend mode
Mode；
The operating frequency of central processing unit is promoted to one second operating frequency by normal operating frequency, passes through the second behaviour
Working frequency handles the second continuous work task；And after the completion of the processing of the second continuous work task, central processing unit is set
For suspend mode；
Wherein the working frequency of the first operating frequency is higher than the working frequency of normal operating frequency；
First continuous work task is handled the time point completed and beginning using the first operating frequency by central processing unit
Receiving had for one first interval time between the time point of the second continuous work task, and used normal frequency continuous by first
Task processing, which is completed and received, had for one second interval time between the second continuous work task, wherein when the first interval
Between less than the second interval time.
Further, control module also connects alarm system by conducting wire, and the alarm system includes detector, light report
The upper end of alarm system is arranged in alert device, phonetic alarm, the detector, and the light alarm apparatus is connected to detector
Downside, the phonetic alarm is connected to the side of light alarm apparatus.
Further, the audio alert implement body uses siren sound loudspeaker warner, and setting operation keyboard, voice mention
Show device, LCD data exception display screen.
Further, the detection implement body is combined using sound wave detector and fixing, and light is arranged in sound wave detector
Fine and light element, light element are fixed in detector body by fixing material, and fixed material is formed in the week of light element
At least part of at least part enclosed, light element is formed by glass, and fixed material is fluorine resin material, tetrafluoro second
Dioxol polymer and fluorine silicone rubber or the refractive index low-refraction silicone lower than the refractive index of light element between alkene-perfluor
Resin or methyl system silicone resin, for the light exit side of light element by fixing material covering, light element includes going out to from light source
The first light conducting member and spread the light conducted by the first light conducting member and conduct to sound wave detector that the light penetrated is conducted
The second neighbouring light conducting member, the second light conducting member include expanding incident light from the light incident side of the first light conducting member incidence in light
At least the second light conducting member is fixed by fixing material in scattered light pervasion component, the first light conducting member and the second light conducting member, the
Only the second light conducting member is fixed by fixing material in one light conducting member and the second light conducting member, fixing include have distal end and
The long element of proximal end, fixing further include the opposed member and shell that at least one is mounted on the far-end of long element,
Opposed member is arranged in a part that detector is clamped between long element and opposed member, and opposed member is from long element
The proximal end for being distally-oriented to long element extend, opposed member is connected to long element by traversing component, traverses component by cloth
It is set to the top edge of a part of engagement detector in use, opposed member is resiliently biased towards long element,
Shell is mounted to long element in the side opposite with opposed member of long element, and the shell is by around transverse to elongated
The axis of the longitudinal direction of component and be pivotally mounted to long element, shell is slidably mounted relative to long element, use
In the brake apparatus for the opposite sliding for preventing shell and long element, brake apparatus includes rack gear and pawl.
Further, the light alarm apparatus specifically uses infra-red alarm, setting DC power supply, infrared light emission electricity
Road, infrared electro conversion circuit, level signal amplifying circuit, DC power supply include light source, drive light source pulse generating circuit,
Total control circuit and power-supply battery, light alarm apparatus shell, light alarm apparatus shell include the pedestal and circular arc type of cylindrical type
Upper cover, light source are the red high-brightness light emitting diode LED of at least one set for being specially insertion upper cover, every group of two pole of red high-brightness luminous
Pipe LED includes the orthogonal red high-brightness light emitting diode LED of 2 axis, and total control circuit controls the pulse generation electricity
The pulse duty factor and pulse width on road control continuous 8 pulses and light high-brightness light emitting diode LED, total control circuit control
Audio and impulse generator export bass signal to woofer, the frequency of audio signal and the resonance of light alarm apparatus shell
Frequency is consistent.
Further, the matrix of alarm shell opens up several apertures, and the region that matrix inner wall opens up several apertures has covered
The ultrafiltration membrane material of hydrophobic, is provided with built-in button, and below power-supply battery and periphery is provided with thermal insulation material, infrared light hair
Transmit-receive radio road is made of infrared light-emitting diode, resistance and linear potentiometer, the model SE303 that infrared light-emitting diode is selected,
Infrared light-emitting diode anode is by resistor wiring potentiometer one end, and the linear potentiometer other end and its activity termination circuit are just
Pole, with connecing circuit, infrared electro conversion circuit is by infrared photodiode, resistance, NPN type crystal for infrared light-emitting diode cathode
Pipe, time base circuit and capacitor composition, the model PH202 that infrared photodiode is selected, the model that time base circuit is selected
NE555。
Advantages of the present invention and good effect are as follows:
The present invention utilizes the cooperation of auger conveyor and channel steel, is conveyed, had both been improved defeated using stablizing for auger conveyor
The efficiency sent, and reduce the generation of dust.
For auger conveyor of the present invention by signal wire link control module, the control method of control module includes: setting control
One threshold speed of the integrated central processing unit of molding block；
Judge that a maximum can handle load capacity according to threshold speed；
Multiple first tasks are combined into one first continuous work task according to platform power administrative skill is collected；
Judge whether a load capacity of the first continuous work task is greater than maximum and can handle load capacity；
It, will be in the first continuous work task when the load capacity of the first continuous work task, which is greater than maximum, to handle load capacity
One of overload part the first task remove the first continuous work task；
When receiving the first continuous work task, central processing unit is switched into an operation mould by a suspend mode
Formula, and the first continuous work task of processing；And after the completion of the processing of the first continuous work task, central processing unit is set
For suspend mode.The intelligent control of speed can be achieved.
Control module also connects alarm system by conducting wire, and the alarm system includes detector, light alarm apparatus, language
The upper end of alarm system is arranged in sound alarm, the detector, and the light alarm apparatus is connected to the downside of detector,
The phonetic alarm is connected to the side of light alarm apparatus.The alarm of abnormal speed can be achieved, and prompt effect good.
Detailed description of the invention
Fig. 1 is facing for the structural schematic diagram of the cement feeding device provided in an embodiment of the present invention for reducing cement fugitive dust
Figure.
Fig. 2 is the side view of the structural schematic diagram of the cement feeding device provided in an embodiment of the present invention for reducing cement fugitive dust
Figure.
Fig. 3 is the vertical view of the structural schematic diagram of the cement feeding device provided in an embodiment of the present invention for reducing cement fugitive dust
Figure.
In figure: 1, auger conveyor；2, dry powder can supporting leg；3, rope is mixed；4, ladle bowl；5, channel steel；6, communicating pipe.
Specific embodiment
In order to further understand the content, features and effects of the present invention, the following examples are hereby given, and cooperate attached drawing
Detailed description are as follows.
Existing technology causes dust from flying during conveying, endangers operator's health.
Structure of the invention is explained in detail with reference to the accompanying drawing.
As shown in Figure 1-Figure 3, the embodiment of the present invention provides the cement feeding device for reducing cement fugitive dust, is provided with spiral
Conveyer 1, dry powder can supporting leg 2 mix rope 3, ladle bowl 4, channel steel 5, communicating pipe 6.
The auger conveyor 1 is mounted on the lowermost end of equipment, and the top of the auger conveyor 1 is equipped with dry powder can branch
Leg 2, the upper support ladle bowl 4 of the dry powder can supporting leg 2, the right side of the auger conveyor 1, which is equipped with, mixes rope 3, the tank
The lower section of shell 4 is equipped with channel steel 5, is equipped with communicating pipe 6 between the auger conveyor 1 and channel steel 5.
The auger conveyor 1 is connected to agitating device.
The rope 3 of mixing is connected and fixed device.
Dry powder: being put into the inside of ladle bowl 4 by the working principle of the invention, is connected to entire conveying device by mixing rope 3
Inside agitating device, raw material is by being transported to auger conveyor 1 communicating pipe 6 inside ladle bowl 4, and auger conveyor 1 is by raw material
Stable is transported to inside agitating device, and dry powder can supporting leg 2 is used to support ladle bowl 4, is transported by stablizing for auger conveyor 1,
To reduce the generation of dust.
It is preferably implemented as the present invention, auger conveyor passes through signal wire link control module, the controlling party of control module
Method includes: the threshold speed for setting the integrated central processing unit of control module；
Judge that a maximum can handle load capacity according to threshold speed；
Multiple first tasks are combined into one first continuous work task according to platform power administrative skill is collected；
Judge whether a load capacity of the first continuous work task is greater than maximum and can handle load capacity；
It, will be in the first continuous work task when the load capacity of the first continuous work task, which is greater than maximum, to handle load capacity
One of overload part the first task remove the first continuous work task；
When receiving the first continuous work task, central processing unit is switched into an operation mould by a suspend mode
Formula, and the first continuous work task of processing；And after the completion of the processing of the first continuous work task, central processing unit is set
For suspend mode.
It is preferably implemented as the present invention, the operating frequency of central processing unit has normal operating frequency under general operation
Rate and method further include:
One first operating frequency is determined according to the load capacity of the first continuous work task and threshold speed；
And when central processing unit switches to operation mode, by the operating frequency of central processing unit by normal operating
Frequency upgrading handles the first continuous work task to the first operating frequency, and by the first operating frequency；
Wherein the working frequency of the first operating frequency is higher than the working frequency of normal operating frequency；
Central processing unit controls method further include:
After the processing of the first continuous work task is completed and central processing unit enters suspend mode, according to collecting platform
First task of multiple second tasks and part of overloading is combined into one second continuous work by power management techniques
Task.
It is preferably implemented as the present invention, when receiving the second continuous work task, by central processing unit by suspend mode mould
Formula switches to operation mode；
The operating frequency of central processing unit is promoted to one second operating frequency by normal operating frequency, passes through the second behaviour
Working frequency handles the second continuous work task；And after the completion of the processing of the second continuous work task, central processing unit is set
For suspend mode；
Wherein the working frequency of the first operating frequency is higher than the working frequency of normal operating frequency；
First continuous work task is handled the time point completed and beginning using the first operating frequency by central processing unit
Receiving had for one first interval time between the time point of the second continuous work task, and used normal frequency continuous by first
Task processing, which is completed and received, had for one second interval time between the second continuous work task, wherein when the first interval
Between less than the second interval time.
It is preferably implemented as the present invention, control module also connects alarm system by conducting wire, and the alarm system includes
The upper end of alarm system, the light alarm is arranged in detector, light alarm apparatus, phonetic alarm, the detector
Device is connected to the downside of detector, and the phonetic alarm is connected to the side of light alarm apparatus.
In embodiments of the present invention, the audio alert implement body uses siren sound loudspeaker warner, setting operation
Keyboard, voice prompting device, LCD data exception display screen.
It is preferably implemented as the present invention, the detection implement body is combined using sound wave detector and fixing, sound wave
Detector setting optical fiber and light element, light element are fixed in detector body by fixing material, and fixed material is formed in
At least part of at least part around light element, light element is formed by glass, and fixed material is fluorine resin
Dioxol polymer and fluorine silicone rubber or refractive index are lower than the refractive index of light element between material, tetrafluoroethylene-perfluoro
Low-refraction silicone resin or methyl system silicone resin, the light exit side of light element is by fixing material covering, light element packet
It includes the first light conducting member conducted to the light being emitted from light source and the light conducted by the first light conducting member is made to spread and conduct
The second light conducting member near to sound wave detector, the second light conducting member is in light from the light incident side packet of the first light conducting member incidence
The light pervasion component for spreading incident light is included, at least the second light conducting member is by fixing in the first light conducting member and the second light conducting member
Material is fixed, and only the second light conducting member is fixed by fixing material in the first light conducting member and the second light conducting member, fixing clamp attached bag
It includes with long element proximally and distally, fixing further includes that at least one is mounted on the opposite of the far-end of long element
Component and shell, opposed member are arranged in a part that detector is clamped between long element and opposed member, opposite structure
Part extends from the proximal end for being distally-oriented to long element of long element, and opposed member is connected to long element by traversing component,
Component is traversed to be arranged to engage the top edge of a part of detector in use, opposed member by towards long element and
It is resiliently biased, shell is mounted to long element in the side opposite with opposed member of long element, and the shell is enclosed
It is pivotally mounted to long element around the axis transverse to the longitudinal direction of long element, shell can be slided relative to long element
It installs dynamicly, the brake apparatus of the opposite sliding for preventing shell and long element, brake apparatus includes rack gear and pawl.
In embodiments of the present invention, the light alarm apparatus specifically uses infra-red alarm, setting DC power supply, red
Outer optical transmission circuit, infrared electro conversion circuit, level signal amplifying circuit, DC power supply include light source, the arteries and veins for driving light source
It includes the pedestal of cylindrical type that circuit, total control circuit and power-supply battery, light alarm apparatus shell, light alarm apparatus shell, which occur, for punching
With the upper cover of circular arc type, light source is the red high-brightness light emitting diode LED of at least one set for being specially insertion upper cover, and every group of red is high
Bright Light-emitting diode LED includes the orthogonal red high-brightness light emitting diode LED of 2 axis, described in total control circuit control
The pulse duty factor and pulse width of pulse generating circuit control continuous 8 pulses and light high-brightness light emitting diode LED, master control
Circuit control audio processed and impulse generator export bass signal to woofer, the frequency and light alarm apparatus of audio signal
The resonant frequency of shell is consistent.
In embodiments of the present invention, the matrix of alarm shell opens up several apertures, and matrix inner wall opens up several apertures
Region covers the ultrafiltration membrane material of hydrophobic, is provided with built-in button, and below power-supply battery and periphery is provided with thermal insulating material
Material, infrared light emission circuit are made of infrared light-emitting diode, resistance and linear potentiometer, the type that infrared light-emitting diode is selected
Number be SE303, infrared light-emitting diode anode pass through resistor wiring potentiometer one end, the linear potentiometer other end and its activity
Termination circuit anode, with connecing circuit, infrared electro conversion circuit is by infrared photodiode, electricity for infrared light-emitting diode cathode
Resistance, NPN transistor, time base circuit and capacitor composition, the model PH202 that infrared photodiode is selected, time base circuit choosing
Model NE555.
The above is only the preferred embodiments of the present invention, and is not intended to limit the present invention in any form,
Any simple modification made to the above embodiment according to the technical essence of the invention, equivalent variations and modification, belong to
In the range of technical solution of the present invention.
Claims (10)
1. a kind of cement feeding device for reducing cement fugitive dust, which is characterized in that the cement feeding dress for reducing cement fugitive dust
It sets and is provided with
Auger conveyor；
The auger conveyor is mounted on the lowermost end of equipment, and dry powder can supporting leg, institute are equipped with above the auger conveyor
The upper support ladle bowl of dry powder can supporting leg is stated, is equipped on the right side of the auger conveyor and mixes rope, the lower section peace of the ladle bowl
Equipped with channel steel, between the auger conveyor and channel steel be installed communicating pipe.
2. reducing the cement feeding device of cement fugitive dust as described in claim 1, which is characterized in that the auger conveyor connects
Logical agitating device.
3. reducing the cement feeding device of cement fugitive dust as described in claim 1, which is characterized in that described to mix rope connection admittedly
Determine device.
4. reducing the cement feeding device of cement fugitive dust as described in claim 1, which is characterized in that auger conveyor passes through letter
Number line link control module, the control method of control module include: to set a speed of the integrated central processing unit of control module
Spend critical value；
Judge that a maximum can handle load capacity according to threshold speed；
Multiple first tasks are combined into one first continuous work task according to platform power administrative skill is collected；
Judge whether a load capacity of the first continuous work task is greater than maximum and can handle load capacity；
When the load capacity of the first continuous work task, which is greater than maximum, to handle load capacity, by one of first continuous work task
First task of overload part removes the first continuous work task；
When receiving the first continuous work task, central processing unit is switched into an operation mode by a suspend mode, with
And the first continuous work task of processing；And after the completion of the processing of the first continuous work task, central processing unit is set as stopping
Sleep mode.
5. reducing the cement feeding device of cement fugitive dust as claimed in claim 4, which is characterized in that the behaviour of central processing unit
Working frequency has a normal operating frequency and method under general operation further include:
One first operating frequency is determined according to the load capacity of the first continuous work task and threshold speed；
And when central processing unit switches to operation mode, by the operating frequency of central processing unit by normal operating frequency
It is promoted to the first operating frequency, and the first continuous work task is handled by the first operating frequency；
Wherein the working frequency of the first operating frequency is higher than the working frequency of normal operating frequency；
Central processing unit controls method further include:
After the processing of the first continuous work task is completed and central processing unit enters suspend mode, according to collecting platform power
First task of multiple second tasks and part of overloading is combined into one second continuous work task by administrative skill；
When receiving the second continuous work task, central processing unit is switched into operation mode by suspend mode；
The operating frequency of central processing unit is promoted to one second operating frequency by normal operating frequency, passes through the second operation frequency
Rate handles the second continuous work task；And after the completion of the processing of the second continuous work task, central processing unit is set as stopping
Sleep mode；
Wherein the working frequency of the first operating frequency is higher than the working frequency of normal operating frequency；
First continuous work task is handled the time point completed and starts to receive by central processing unit using the first operating frequency
To having for one first interval time between the time point of the second continuous work task, and use normal frequency by the first continuous work
Task processing, which is completed and received, had for one second interval time between the second continuous work task, wherein the first interval time is small
In the second interval time.
6. reducing the cement feeding device of cement fugitive dust as claimed in claim 4, which is characterized in that control module, which also passes through, to be led
Line connects alarm system, and the alarm system includes detector, light alarm apparatus, phonetic alarm, and the detector is set
It sets in the upper end of alarm system, the light alarm apparatus is connected to the downside of detector, and the phonetic alarm is connected to
The side of light alarm apparatus.
7. smart home solid bodyguard as claimed in claim 6, which is characterized in that the audio alert implement body is using police
Whistling sound loudspeaker warner, setting operation keyboard, voice prompting device, LCD data exception display screen.
8. reducing the cement feeding device of cement fugitive dust as claimed in claim 7, which is characterized in that the detection implement body
It is combined using sound wave detector and fixing, optical fiber and light element is arranged in sound wave detector, and light element is by fixing material
It being fixed in detector body, fixed material is formed at least part around light element, and at least the one of light element
Part is formed by glass, and fixed material is dioxol polymer and fluorine silicon rubber between fluorine resin material, tetrafluoroethylene-perfluoro
Glue or the refractive index low-refraction silicone resin or methyl system silicone resin lower than the refractive index of light element, the light of light element
Exit end by fix material covering, light element include the first light conducting member that the light being emitted from light source is conducted and make by
The second light conducting member that the light of first light conducting member conduction spreads and conducts to sound wave detector, the second light conducting member is in light
Light incident side from the incidence of the first light conducting member includes the light pervasion component for spreading incident light, and the first light conducting member and second is led
At least the second light conducting member is fixed by fixing material in light component, only second guide-lighting in the first light conducting member and the second light conducting member
Component is fixed by fixing material, and fixing includes with long element proximally and distally, and fixing further includes at least one
The opposed member and shell of a far-end for being mounted on long element, opposed member are arranged in long element and opposed member
Between clamp a part of detector, opposed member extends from the proximal end for being distally-oriented to long element of long element, opposite structure
Part is connected to long element by traversing component, traverses component and is arranged to engage the top of a part of detector in use
Edge, opposed member are resiliently biased towards long element, and shell is in the side opposite with opposed member of long element
It is mounted to long element, the shell is pivotally mounted to grow around the axis transverse to the longitudinal direction of long element
Shape component, shell are slidably mounted relative to long element, the braking of the opposite sliding for preventing shell and long element
Device, brake apparatus include rack gear and pawl.
9. reducing the cement feeding device of cement fugitive dust as claimed in claim 8, which is characterized in that the light alarm apparatus
Infra-red alarm is specifically used, setting DC power supply, infrared light emission circuit, infrared electro conversion circuit, level signal are put
Big circuit, DC power supply include light source, the pulse generating circuit, total control circuit and the power-supply battery that drive light source, light alarm
Device shell, light alarm apparatus shell include the pedestal of cylindrical type and the upper cover of circular arc type, and light source is specially to be embedded in upper cover extremely
Few one group of red high-brightness light emitting diode LED, every group of red high-brightness light emitting diode LED include that 2 axis are orthogonal red
Color high-brightness light emitting diode LED, total control circuit control the pulse duty factor and pulse width of the pulse generating circuit, control
High-brightness light emitting diode LED is lighted in continuous 8 pulses, and total control circuit controls audio and impulse generator exports bass signal
To woofer, the frequency of audio signal is consistent with the resonant frequency of light alarm apparatus shell.
10. reducing the cement feeding device of cement fugitive dust as claimed in claim 9, which is characterized in that the base of alarm shell
Body opens up several apertures, and the region that matrix inner wall opens up several apertures covers the ultrafiltration membrane material of hydrophobic, is provided with built-in
Button, below power-supply battery and periphery are provided with thermal insulation material, infrared light emission circuit by infrared light-emitting diode, resistance and
Linear potentiometer composition, the model SE303 that infrared light-emitting diode is selected, infrared light-emitting diode anode pass through resistor wiring
Property potentiometer one end, the linear potentiometer other end and its activity termination circuit anode, infrared light-emitting diode cathode with connecing circuit,
Infrared electro conversion circuit is made of infrared photodiode, resistance, NPN transistor, time base circuit and capacitor.
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| CN201811625229.9A CN109571768A (en) | 2018-12-28 | 2018-12-28 | A kind of cement feeding device reducing cement fugitive dust |
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| CN201811625229.9A CN109571768A (en) | 2018-12-28 | 2018-12-28 | A kind of cement feeding device reducing cement fugitive dust |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110221063A (en) * | 2019-07-03 | 2019-09-10 | 广州市丰华生物工程有限公司 | A kind of rapid time resolved fluorometric immunoassay detection kit and its detection method |
| CN110317152A (en) * | 2019-06-18 | 2019-10-11 | 武汉青江化工黄冈有限公司 | A kind of O- methyl-N methyl-N '-nitro isourea production method |
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Application publication date: 20190405 |