CN111323349A - Constant temperature and humidity dust environment simulation device - Google Patents
Constant temperature and humidity dust environment simulation device Download PDFInfo
- Publication number
- CN111323349A CN111323349A CN202010178872.2A CN202010178872A CN111323349A CN 111323349 A CN111323349 A CN 111323349A CN 202010178872 A CN202010178872 A CN 202010178872A CN 111323349 A CN111323349 A CN 111323349A
- Authority
- CN
- China
- Prior art keywords
- dust
- chamber
- simulation
- air supply
- outlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000428 dust Substances 0.000 title claims abstract description 287
- 238000004088 simulation Methods 0.000 title claims abstract description 134
- 238000001914 filtration Methods 0.000 claims abstract description 5
- 230000007246 mechanism Effects 0.000 claims description 45
- 230000001105 regulatory effect Effects 0.000 claims description 19
- 238000001816 cooling Methods 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 13
- 238000007664 blowing Methods 0.000 claims description 9
- 230000001276 controlling effect Effects 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 7
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 238000005485 electric heating Methods 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 15
- 238000005516 engineering process Methods 0.000 description 6
- 230000001360 synchronised effect Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L1/00—Enclosures; Chambers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L7/00—Heating or cooling apparatus; Heat insulating devices
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Clinical Laboratory Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Dispersion Chemistry (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a constant-temperature and constant-humidity dust environment simulation device, which comprises a dust simulation chamber, wherein a dust outlet chamber is arranged at the upper part of the dust simulation chamber and is connected with a dust generating device, the dust outlet chamber is also communicated with a circulating air supply system, the circulating air supply system comprises a circulating air supply pipeline, a circulating pump is arranged on the circulating air supply pipeline, an air suction chamber is arranged at the bottom of the dust simulation chamber, the air suction chamber and the dust outlet chamber are positioned at the opposite sides of the dust simulation chamber, one end of the circulating air supply pipeline is communicated with the dust outlet chamber, the other end of the circulating air supply pipeline is communicated with the air suction chamber, and a filtering device is arranged in the air suction chamber; the dust simulation room is also provided with a constant temperature device for controlling the temperature of the dust simulation room and a constant humidity device for controlling the humidity of the dust simulation room. The dust environment simulation device can simulate dust simulation environments with different temperatures and humidity, so that the calibration requirement of the dust concentration detection instrument is met, and the accuracy of the calibration result is improved.
Description
Technical Field
The invention relates to a dust environment simulation device, in particular to a constant-temperature constant-humidity dust environment simulation device.
Background
The environment simulation technology is a new edge technology, and mainly researches artificial reproduction technologies of various natural environments and test technologies of products in a simulation environment; the ground environment simulation equipment mainly comprises low-temperature environment simulation, high-temperature environment simulation, damp-heat environment simulation, solar irradiation simulation, sand dust environment simulation, rain environment simulation, dipping simulation, acid environment simulation, explosive atmosphere environment simulation, ice accumulation/freezing rain environment simulation, mold environment simulation and the like. Once simulated, some environments may be tested for environmental reliability, accuracy, or durability of the product. However, the two dust simulation environments are still limited, and the horizontal dust simulation environment is only suitable for dust environment simulation with high concentration but not suitable for dust simulation with low concentration, particularly the dust concentration requirement is 0.01-20 mg/m3: the reason is that the wind speed cannot be fast if the trace dust is uniform in the wind tunnel, and the dust with too slow wind speed is slowly deposited on the lower half part of the wind tunnel due to the self gravity, so that the concentration of the same section of the wind tunnel is inconsistent, and the calibration accuracy of the dust concentration measuring instrument is influenced.
Although the simulated environment of the dust simulation device of the vertical wind tunnel is more accurate, the simulation device cannot realize the environment simulation under specific temperature and humidity and cannot be calibrated under the dust simulation environment with a plurality of different parameters. When some dust concentration detection instruments are calibrated, the calibration is performed in a laboratory environment, and the calibration is accurate in the laboratory environment, but when the dust concentration detection instruments are used in an actual detection environment, due to different temperatures, different environmental humidities and the like, the detection results of the dust concentration detection instruments fluctuate greatly, and the detection results are possibly inaccurate.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the dust environment simulation device can simulate dust simulation environments with different temperatures and humidity, so that the calibration requirement of a dust concentration detection instrument is met, and the accuracy of a calibration result is improved.
In order to solve the technical problems, the technical scheme of the invention is as follows: a constant-temperature and constant-humidity dust environment simulation device comprises a dust simulation chamber, wherein a dust outlet chamber is arranged at the upper part of the dust simulation chamber and connected with a dust generating device, the dust outlet chamber is also communicated with a circulating air supply system for blowing dust provided by the dust generating device into the dust simulation chamber, the circulating air supply system comprises a circulating air supply pipeline, a circulating pump is arranged on the circulating air supply pipeline, an air suction chamber is arranged at the bottom of the dust simulation chamber, the air suction chamber and the dust outlet chamber are positioned at the opposite sides of the dust simulation chamber, one end of the circulating air supply pipeline is communicated with the dust outlet chamber, the other end of the circulating air supply pipeline is communicated with the air suction chamber, and a filtering device is arranged in the air suction chamber; the dust simulation room is also provided with a constant temperature device for controlling the temperature of the dust simulation room and a constant humidity device for controlling the humidity of the dust simulation room.
As a preferred scheme, the constant temperature device comprises a temperature control chamber arranged outside the dust simulation chamber, the lower part of the temperature control chamber is communicated with the dust simulation chamber through an air inlet or an air outlet, the upper part of the temperature control chamber is communicated with the dust simulation chamber through an air outlet or an air inlet, the air outlet and the air inlet are both provided with openable shutters, a fan for providing aerodynamic force is fixed in the temperature control chamber, a heating device for heating the air in the temperature control chamber and a cooling device for cooling the air in the temperature control chamber are also arranged in the temperature control chamber, a temperature sensor for detecting the temperature is arranged in the dust simulation chamber, the constant temperature device can firstly adjust the temperature of the dust simulation chamber before the dust environment simulation, and when the temperature of the dust simulation chamber meets the requirement, the shutters are closed to enable the dust simulation chamber to be in a relatively closed environment, therefore, the dust outlet of the dust outlet chamber simulates a dust environment in a relatively constant temperature state, and the calibration of the instrument is facilitated.
As a preferable scheme, the constant temperature device further comprises an auxiliary temperature control device, the auxiliary temperature control device comprises an auxiliary cooling device arranged at the top of the dust simulation chamber and an electric auxiliary heating device arranged at the bottom of the dust simulation chamber, and the auxiliary temperature control device can be used for further accurately controlling the temperature in the calibration process of the dust concentration detection instrument, so that the accuracy of the calibration result is improved.
Preferably, the heating device is an electric heating rod assembly, the cooling device is a condenser, and the auxiliary cooling device is a cooling coil assembly.
As a preferred scheme, the dust generating device comprises a low-concentration dust generating device and a high-concentration dust generating device, the low-concentration dust generating device is communicated with the dust outlet chamber through a low-concentration dust outlet channel, the high-concentration dust generating device is communicated with the dust outlet chamber through a high-concentration dust outlet channel, valves are arranged on the low-concentration dust outlet channel and the high-concentration dust outlet channel, and the dust generating device can generate a low-concentration dust simulation environment and a high-concentration dust simulation environment, so that the calibration requirements of different dust concentration detection instruments are further met.
As a preferred scheme, the low-concentration dust generating device comprises a base fixed outside a dust simulation chamber, a dust generating chamber is arranged on the base and connected with the low-concentration dust outlet channel, the dust generating chamber is connected with a dust generating air supply pipeline, an air supply pump is arranged on the dust generating air supply pipeline, a brush assembly is rotatably mounted in the dust generating chamber and driven by a brush rotating power device, a lower through hole is formed in the bottom of the dust generating chamber, a lifting seat is vertically mounted on the base in a lifting manner, a fixed cylinder is fixed on the upper portion of the lifting seat, a powder block is mounted at the upper end of the fixed cylinder, the position of the fixed cylinder corresponds to the position of the lower through hole, a screw nut mechanism is rotatably mounted on the base, a nut of the screw nut mechanism is transmitted to the lifting motor through a transmission mechanism, and the upper end of a screw of the screw nut mechanism penetrates through the lifting seat, a locking mechanism for locking or loosening the screw rod is arranged between the lifting seat and the upper end of the screw rod, the nut of the screw rod nut mechanism is driven to rotate by the lifting motor of the low-concentration dust generating device, the screw rod can be lifted by the rotation of the nut of the screw rod nut mechanism, the upper end of the screw rod is locked with the lifting seat into a whole through the locking mechanism, the lifting seat moves along with the screw rod and slowly ascends, so that dust is gradually fed, the brush assembly is driven to rotate by the brush rotating power device to scrape out the dust on the surface of the dust block, and then the dust block is blown out through the dust generating air supply pipeline and finally enters the dust simulation chamber; and after the powder piece is used and accomplished, at this moment, loosen locking structure, can artifical reversal lead screw, the lead screw just can be relative nut rotation and descend, drives the lift seat decline in the in-process that descends, drives the decline of solid fixed cylinder then, makes the decline of solid fixed cylinder very fast like this to make things convenient for the change of powder piece.
As a preferable scheme, the locking mechanism comprises a ratchet wheel fixed at the upper end of the screw rod, and an insertion block matched with the ratchet wheel in a locking way is slidably mounted on the corresponding lifting seat along the radial direction of the ratchet wheel, the locking mechanism is simple in structure, and when the locking is needed, the screw rod can be locked to rotate only by inserting the insertion block into a groove of the ratchet wheel, so that the screw rod and the lifting seat ascend together; when the insert blocks are separated from the grooves of the ratchet wheels, the lead screw can rotate relative to the lifting seat, so that the lifting seat can be pulled to descend through the ratchet wheels when the lead screw rotates to descend, the fixing block finally descends fast, and dust can be replaced conveniently.
Preferably, the lifting seat is further provided with a linear driving mechanism for driving the insertion block to slide, so that the insertion block can be automatically controlled by the linear driving mechanism, and the degree of automation is higher.
As a preferred scheme, the dust outlet chamber is a strip-shaped dust outlet chamber, a conical dust outlet mouth is arranged on the dust outlet chamber, the dust outlet mouth is provided with blowing holes which are arranged in a straight line, an air outlet quantity adjusting mechanism for adjusting the air quantity of the dust outlet is arranged on the dust outlet mouth, and the air quantity can be adjusted by utilizing the air outlet quantity adjusting mechanism, so that the air quantity of the dust outlet can be better controlled, and the simulation of different dust concentration environments is met.
As a preferred scheme, air output adjustment mechanism all is provided with a plurality of bar hole including installing in the last regulating plate of play dirt mouth portion top, installing in the lower regulating plate of play dirt mouth portion below on last regulating plate and the lower regulating plate, all be fixed in the top and the below of play dirt mouth portion through installing the downthehole bolt of bar on last regulating plate and the lower regulating plate, this air output adjustment mechanism simple structure adjusts the convenience.
After the technical scheme is adopted, the invention has the effects that: the dust environment simulation device comprises a dust simulation chamber, a dust outlet chamber is arranged at the upper part of the dust simulation chamber, the dust outlet chamber is connected with a dust generating device, the dust outlet chamber is also communicated with a circulating air supply system for blowing dust provided by the dust generating device into the dust simulation chamber, the circulating air supply system comprises a circulating air supply pipeline, a circulating pump is arranged on the circulating air supply pipeline, an air suction chamber is arranged at the bottom of the dust simulation chamber, the air suction chamber and the dust outlet chamber are positioned at the opposite sides of the dust simulation chamber, one end of the circulating air supply pipeline is communicated with the dust outlet chamber, the other end of the circulating air supply pipeline is communicated with the air suction chamber, and a filtering device is arranged in the air suction chamber; the dust simulation chamber is also provided with a constant temperature device for controlling the temperature of the dust simulation chamber and a constant humidity device for controlling the humidity of the dust simulation chamber, therefore, the dust simulation device discharges dust through the dust discharge chamber arranged at the upper part, then the power of the dust discharge comes from the circulating pump, and the air flow of the dust simulation chamber is internally circulated without introducing external air, thus reducing interference, the constant temperature device and the constant humidity device are utilized to regulate and control the temperature and the humidity in the dust simulation chamber, therefore, when a certain dust concentration detection instrument is calibrated, real environment simulation can be carried out according to the actual condition required by the dust concentration detection instrument, different temperatures and different humidities of the dust simulation chamber are adjusted, therefore, the dust concentration detection instrument can calibrate dust under different simulated environments for many times, and the accuracy of the calibration result of the dust concentration detection instrument is improved.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a perspective view of the external structure of an embodiment of the present invention;
FIG. 2 is a perspective view of the chamber wall hiding the dust simulation chamber;
FIG. 3 is a perspective view of another angle of the chamber wall hiding the dust simulation chamber;
FIG. 4 is a perspective view of the dust chamber;
FIG. 5 is a perspective view of a low concentration dust generating apparatus;
FIG. 6 is a schematic front view of a low-consistency dusting apparatus;
FIG. 7 is a cross-sectional view at A-A of FIG. 6;
FIG. 8 is a cross-sectional view of FIG. 6 at B-B;
in the drawings: 1. a dust simulation chamber; 2. a low concentration dust generating device; 21. a machine base; 22. a lifting seat; 23. a fixed cylinder; 24. a lead screw; 25. a ratchet wheel; 26. inserting a block; 27. a nut; 28. a driving synchronous pulley; 29. a lifting motor; 210. a dust-emitting chamber; 211. a brush rotation power device; 212. a brush assembly; 213. a rotation operation part; 3. a high concentration dust generating device; 4. a dust outlet chamber; 41. a dust outlet part; 42. a blowing hole; 43. an upper adjusting plate; 44. a strip-shaped hole; 45. a circulation pump; 46. a circulating gas supply line; 5. a temperature control chamber; 6. a condenser; 7. an electrical heating rod assembly; 8. a fan; 9. an air outlet; 10. an air inlet; 11. a suction chamber; 12. a cooling coil assembly; 13. an electrically assisted heating device.
Detailed Description
The present invention is described in further detail below with reference to specific examples.
As shown in fig. 1 to 8, a constant temperature and humidity dust environment simulation apparatus includes a dust simulation chamber 1, and the shape of the dust simulation chamber 1 is not limited, but is preferably a rectangular parallelepiped, and the space thereof is relatively large, and is more suitable for simulating a dust environment.
A dust outlet chamber 4 is arranged at the upper part of the dust simulation chamber 1, the dust outlet chamber 4 is connected with a dust generating device, the dust outlet chamber 4 is also communicated with a circulating air supply system for blowing dust provided by the dust generating device into the dust simulation chamber 1, the circulating air supply system comprises a circulating air supply pipeline 46, a circulating pump 45 is arranged on the circulating air supply pipeline 46, an air suction chamber 11 is arranged at the bottom of the dust simulation chamber 1, the air suction chamber 11 and the dust outlet chamber 4 are positioned at the opposite sides of the dust simulation chamber 1, one end of the circulating air supply pipeline 46 is communicated with the dust outlet chamber 4, the other end of the circulating air supply pipeline is communicated with the air suction chamber 11, and a filtering device is arranged in the air suction chamber 11; the dust simulation room 1 is also provided with a constant temperature device for controlling the temperature of the dust simulation room 1 and a constant humidity device for controlling the humidity of the dust simulation room 1.
In this embodiment, the constant temperature device includes a temperature control chamber 5 disposed outside the dust simulation chamber 1, a lower portion of the temperature control chamber 5 is communicated with the dust simulation chamber 1 through an air inlet 10 or an air outlet 9, an upper portion of the temperature control chamber 5 is communicated with the dust simulation chamber 1 through the air outlet 9 or the air inlet 10, in this embodiment, the lower portion of the temperature control chamber 5 is the air outlet 9, and the upper portion is the air inlet 10; but air outlet 9 and air intake 10 department all are provided with open closed shutter, temperature control cavity 5 internal fixation has the fan 8 that provides aerodynamic, still is provided with the heating device that heats the air in the temperature control cavity 5, carries out the cooling device that cools down to the air in the temperature control cavity 5, set up in the temperature sensor who is used for detecting the temperature in dust simulation room 1, this constant temperature equipment can adjust dust simulation room 1's temperature earlier before the dust environment simulation, and when dust simulation room 1's temperature reached the requirement, closed shutter makes dust simulation room 1 be located a relative confined environment, goes out the dust environment that dust chamber 4 goes out the dirt and has simulated under the relative constant temperature state like this, makes things convenient for the demarcation of instrument.
The shutter is of a conventional structure, and is commercially available.
As shown in fig. 1 to fig. 3, the constant temperature device further includes an auxiliary temperature control device, the auxiliary temperature control device includes an auxiliary cooling device disposed at the top of the dust simulation chamber 1 and an electric auxiliary heating device 13 disposed at the bottom of the dust simulation chamber 1, and the auxiliary temperature control device can be used to further accurately control temperature during calibration of the dust concentration detection instrument, so as to improve accuracy of a calibration result. The heating device is an electric heating rod assembly 7, the cooling device is a condenser 6, and the auxiliary cooling device is a cooling coil assembly 12. The electric auxiliary heating device 13 is a U-shaped electric heating tube, and is arranged at the bottom of the floor of the dust simulation chamber 1. The cooling coil assembly 12 is a modular assembly that can be configured according to the size of the dust simulation chamber 1.
In this embodiment, the dust generating device includes low concentration dust generating device 2 and high concentration dust generating device 3, low concentration dust generating device 2 goes out dirt passageway and goes out dirt cavity 4 intercommunication through the low concentration, high concentration dust generating device 3 goes out dirt passageway and goes out dirt cavity 4 intercommunication through the high concentration, all be provided with the valve on low concentration goes out dirt passageway and the high concentration and goes out the dirt passageway, and this dust generating device not only can produce the dust simulation environment of low concentration, but also can produce high concentration dust simulation environment, further satisfies different dust concentration instrumentation's demarcation requirement. The high-concentration dust generating apparatus 3 can adopt the technical scheme described in CN201320205310.8, and the structure is clear, so the detailed description is omitted.
As shown in fig. 5 to 8, the low concentration dust generating device 2 includes a base 21 fixed outside the dust simulation chamber 1, a dust generating chamber 210 is disposed on the base 21, the dust generating chamber 210 is connected to the low concentration dust outlet channel, the dust generating chamber 210 is connected to a dust generating air supply pipeline, an air supply pump is disposed on the dust generating air supply pipeline, air generated by the air supply pump enters the dust generating chamber 210 through the dust generating air supply pipeline, and blows out dust generated by rotation of the brush assembly 212 from the dust outlet channel to generate dust, the brush assembly 212 is rotatably mounted in the dust generating chamber 210, the brush assembly 212 is driven by a brush rotation power device 211, the brush rotation power device 211 is a motor, a lower through hole is disposed at the bottom of the dust generating chamber 210, a lifting base 22 is vertically mounted on the base 21 in a lifting manner, a limit switch is disposed on the base 21, and contacts with the limit switch when the lifting base 22 is lifted to a limit position, so that the elevating platform 22 stops rising.
A fixed cylinder 23 is fixed on the upper part of the lifting seat 22, a powder block is installed at the upper end of the fixed cylinder 23, the position of the fixed cylinder 23 corresponds to the position of the lower through hole, a screw 24 and nut 27 mechanism is rotatably installed on the machine base 21, the nut 27 of the screw 24 and nut 27 mechanism is in transmission with a lifting motor 29 through a transmission mechanism, in the embodiment, the transmission mechanism is a synchronous belt transmission mechanism, the nut 27 is directly in a synchronous belt pulley structure, a driving synchronous belt pulley 28 is installed on an output shaft of the lifting motor 29, the upper end of the screw 24 and nut 27 mechanism penetrates through the lifting seat 22, a locking mechanism for locking or unlocking the screw 24 is arranged between the lifting seat 22 and the upper end of the screw 24, the low-concentration dust generating device 2 drives the nut 27 of the screw 24 and nut 27 mechanism to rotate through the lifting motor 29, and the nut 27 of the screw 24 and nut 27 mechanism rotates to enable the screw, the upper end of the screw 24 is locked with the lifting base 22 by a locking mechanism, so that the lifting base 22 moves along with the screw 24 and rises slowly, thereby gradually feeding the dust, and the rotation speed of the nut 27 is very slow because the powder block rises very slowly.
The brush assembly 212 is driven by the brush rotating power device 211 to rotate so as to scrape out the dust on the surface of the dust block, and then the dust block is blown out through the dust generating air supply pipeline and finally enters the dust simulation chamber 1; and when the powder block is used, at the moment, the locking structure is loosened, the screw rod 24 can be manually reversed, wherein the rotary operation part 213 is arranged at the lower end of the screw rod 24 in the operation of turning over the screw rod 24, so that the manual operation is convenient. The screw rod 24 rotates and descends relative to the nut 27, and drives the lifting seat 22 to descend in the descending process, and then drives the fixed cylinder 23 to descend, so that the fixed cylinder 23 descends very quickly, and the powder block is convenient to replace.
In this embodiment, the locking mechanism includes a ratchet 25 fixed on the upper end of the lead screw 24, and an insert 26 locked with the ratchet 25 is slidably mounted on the corresponding lifting seat 22 along the radial direction of the ratchet 25, the locking mechanism has a simple structure, and when locking is required, the lead screw 24 can be locked to rotate only by inserting the insert 26 into the groove of the ratchet 25, so that the lead screw 24 and the lifting seat 22 ascend together; when the insert 26 is separated from the groove of the ratchet 25, the screw 24 can rotate relative to the lifting seat 22, so that the screw 24 rotates and descends, meanwhile, the lifting seat 22 can be pulled to descend through the ratchet 25, finally, the fixing block descends rapidly, and dust is convenient to replace.
Wherein, the slip locking of inserted block 26 can adopt manual operation's mode, and at this moment, can lock the position of inserted block 26 through lock nut 27 between inserted block 26 and the frame 21, and of course, more advanced still install the gliding linear drive mechanism of drive inserted block 26 on the lift seat 22, inserted block 26 can be by linear drive structure automatic control like this, and degree of automation is higher like this.
As shown in fig. 4, the dust outlet chamber 4 is a strip-shaped dust outlet chamber 4, the dust outlet chamber 4 is provided with a cone-shaped dust outlet portion 41, the dust outlet portion 41 is provided with blowing holes 42 arranged in a straight line, a uniform dust-containing air flow can be formed at the upper portion of the dust simulation chamber through the blowing holes, and then a uniform dust environment is formed through natural sedimentation and dissipation, and because the amount of the blowing holes 42 is large and the area is small, the dust can be blown to the other end of the dust simulation chamber, the dust at each position of the dust simulation chamber is also uniform, the dust outlet portion 41 is provided with an air outlet amount adjusting mechanism for adjusting the air outlet amount, the air outlet amount can be adjusted by using the air outlet amount adjusting mechanism, so that the air outlet amount can be better controlled, and the simulation of different dust concentration environments can be satisfied. Air output adjustment mechanism is including installing in the last regulating plate 43 of play dirt mouth part 41 top, installing in the lower regulating plate of play dirt mouth part 41 below, all be provided with a plurality of bar hole 44 on last regulating plate 43 and the lower regulating plate, all be fixed in the top and the below of play dirt mouth part 41 through the bolt of installing in bar hole 44 on last regulating plate 43 and the lower regulating plate, this air output adjustment mechanism simple structure, it is convenient to adjust.
The gas circuit system, the actuating devices such as the servo motor and the like, the gear transmission mechanism and the screw rod 24 and nut 27 mechanism mentioned in the embodiment are the conventional technologies at present, the specific structures and principles of the cylinder, the motor and other transmission mechanisms and other designs are disclosed in detail in the fifth edition of the mechanical design manual printed for twenty-eight times in the fifth edition of Beijing in 4 months in 2008, and belong to the prior art, the structure of the gas circuit system is clearly clarified, a vacuum element, a gas circuit and program control are disclosed in detail in the modern practical pneumatic technology 3 rd edition SMC training teaching material published by the mechanical industry publisher in 2008, 08 months and 01, the gas circuit structure in the embodiment is also the prior art, and the control and the travel switch of the motor are also described in detail in the motor driving and speed regulating book published by the chemical industry publisher in 2015, 07 months and 01, therefore, the electrical and gas path connections are clear.
The above-mentioned embodiments are merely descriptions of the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and alterations made to the technical solution of the present invention without departing from the spirit of the present invention are intended to fall within the scope of the present invention defined by the claims.
Claims (10)
1. The utility model provides a constant temperature and humidity dust environment analogue means, includes dust simulation room, its characterized in that: the dust simulation device comprises a dust simulation chamber, a dust outlet chamber, a circulating air supply system, a circulating air supply pipeline, a circulating pump, an air suction chamber and a filtering device, wherein the dust outlet chamber is arranged at the upper part of the dust simulation chamber, the dust outlet chamber is connected with a dust generating device, the dust outlet chamber is also communicated with the circulating air supply system which sprays dust provided by the dust generating device into the dust simulation chamber, the circulating air supply system comprises a circulating air supply pipeline, the circulating air supply pipeline is provided with the circulating pump, the bottom of the dust simulation chamber is provided with the air suction chamber, the air suction chamber and the dust outlet chamber are positioned at the opposite sides of the dust simulation chamber, one end of the circulating air supply pipeline is communicated with the; the dust simulation room is also provided with a constant temperature device for controlling the temperature of the dust simulation room and a constant humidity device for controlling the humidity of the dust simulation room.
2. The dust environment simulation device of claim 1, wherein: the constant temperature equipment is including setting up in the outside control by temperature change cavity of dust simulation room, air intake or air outlet and dust simulation room intercommunication are passed through to the lower part of control by temperature change cavity, air outlet or air intake and dust simulation room intercommunication are passed through to the upper portion of control by temperature change cavity, air outlet and air intake department all are provided with open closed shutter, be fixed with the fan that provides aerodynamic in the control by temperature change cavity, still be provided with in the control by temperature change cavity and carry out the heating device that heats, carry out the cooling device that cools down to the air in the control by temperature change cavity, set up in the temperature sensor who is used for detecting the temperature.
3. The dust environment simulation device of claim 2, wherein: the constant temperature device further comprises an auxiliary temperature control device, and the auxiliary temperature control device comprises an auxiliary cooling device arranged at the top of the dust simulation chamber and an electric auxiliary heating device arranged at the bottom of the dust simulation chamber.
4. A constant temperature and humidity dust environment simulation apparatus according to claim 3, wherein: the heating device is an electric heating rod assembly, the cooling device is a condenser, and the auxiliary cooling device is a cooling coil assembly.
5. A constant temperature and humidity dust environment simulation apparatus as set forth in any one of claims 1 to 4, wherein: the dust generating device comprises a low-concentration dust generating device and a high-concentration dust generating device, the low-concentration dust generating device is communicated with the dust outlet chamber through a low-concentration dust outlet channel, the high-concentration dust generating device is communicated with the dust outlet chamber through a high-concentration dust outlet channel, and valves are arranged on the low-concentration dust outlet channel and the high-concentration dust outlet channel.
6. The dust environment simulation device of claim 5, wherein: the low-concentration dust generating device comprises a base fixed outside a dust simulation chamber, a dust generating chamber is arranged on the base and connected with the low-concentration dust outlet channel, the dust generating chamber is connected with a dust generating air supply pipeline, an air supply pump is arranged on the dust generating air supply pipeline, a brush assembly is rotatably arranged in the dust generating chamber and driven by a brush rotating power device, a lower through hole is formed in the bottom of the dust generating chamber, a lifting seat is vertically arranged on the base in a lifting manner, a fixing cylinder is fixed on the upper portion of the lifting seat, a powder block is arranged at the upper end of the fixing cylinder, the position of the fixing cylinder corresponds to the position of the lower through hole, a screw nut mechanism is rotatably arranged on the base, a nut of the screw nut mechanism is transmitted to a lifting motor through a transmission mechanism, and the upper end of a screw of the screw nut mechanism penetrates through the lifting seat, and a locking mechanism for locking or loosening the screw rod is arranged between the lifting seat and the upper end of the screw rod.
7. The dust environment simulation device of claim 6, wherein: the locking mechanism comprises a ratchet wheel fixed at the upper end of the screw rod, and an inserting block which is matched with the ratchet wheel in a locking mode is installed on the corresponding lifting seat in a sliding mode along the radial direction of the ratchet wheel.
8. The dust environment simulation device of claim 7, wherein: and the lifting seat is also provided with a linear driving mechanism for driving the insertion block to slide.
9. The dust environment simulation device of claim 1, wherein: the dust outlet cavity is a strip-shaped dust outlet cavity, a conical dust outlet opening is arranged on the dust outlet cavity, the dust outlet opening is provided with blowing holes which are arranged in a straight line, and an air outlet quantity adjusting mechanism for adjusting the air quantity of the dust outlet is arranged on the dust outlet opening.
10. The dust environment simulation device of claim 9, wherein: air output adjustment mechanism is including installing in the last regulating plate of play dirt mouth portion top, installing in the lower regulating plate of play dirt mouth portion below, all is provided with a plurality of bar hole on last regulating plate and the lower regulating plate, all be fixed in the top and the below of play dirt mouth portion through installing the bolt in the bar hole on last regulating plate and the lower regulating plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010178872.2A CN111323349A (en) | 2020-03-15 | 2020-03-15 | Constant temperature and humidity dust environment simulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010178872.2A CN111323349A (en) | 2020-03-15 | 2020-03-15 | Constant temperature and humidity dust environment simulation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111323349A true CN111323349A (en) | 2020-06-23 |
Family
ID=71164384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010178872.2A Pending CN111323349A (en) | 2020-03-15 | 2020-03-15 | Constant temperature and humidity dust environment simulation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111323349A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112683450A (en) * | 2020-12-11 | 2021-04-20 | 上海增达科技股份有限公司 | Dust test cabin for whole vehicle test |
-
2020
- 2020-03-15 CN CN202010178872.2A patent/CN111323349A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112683450A (en) * | 2020-12-11 | 2021-04-20 | 上海增达科技股份有限公司 | Dust test cabin for whole vehicle test |
| CN112683450B (en) * | 2020-12-11 | 2021-09-07 | 上海增达科技股份有限公司 | Dust test cabin for whole vehicle test |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103604733B (en) | The method of dust atmosphere analogue means and demarcation dust concentration tester thereof | |
| CN111323349A (en) | Constant temperature and humidity dust environment simulation device | |
| CN212932306U (en) | Constant temperature and humidity dust environment simulation device | |
| US4750355A (en) | Wind-velocity controlling apparatus for simulating self-propelled vehicle velocity | |
| CN212549059U (en) | Dust generating device of constant-temperature and constant-humidity dust environment simulation device | |
| CN107084906A (en) | A kind of circulating high temperature baking test case | |
| CN203595651U (en) | Dust environment simulation device | |
| KR102314034B1 (en) | Dust test apparatus | |
| CN111318193A (en) | Dust generating device of constant-temperature and constant-humidity dust environment simulation device | |
| CN215728762U (en) | Insulation resistance tester calibrating device | |
| CN114062918B (en) | Relay performance inspection device with state simulation function | |
| CN103994967B (en) | Ozone-induced cracking aging testing instrument | |
| CN115078770A (en) | Extremely low wind speed calibration system | |
| CN211800089U (en) | Low-concentration dust generating device | |
| CN218409276U (en) | Air volume testing device for air conditioner ventilation | |
| CN213866139U (en) | PCR nucleic acid amplification instrument | |
| CN219097853U (en) | Automatic feeding device capable of adjusting conveying distance | |
| CN111691910A (en) | Coal mine adjusting air window capable of accurately determining ventilation volume | |
| CN219269658U (en) | Warmhouse booth of temperature of can monitoring | |
| CN218973590U (en) | Calibrating device of gas flow sensor | |
| CN115931694A (en) | Mortar material cracking resistance test equipment and test method | |
| CN110426263B (en) | Cigarette balance adjusting device and method | |
| CN112880990B (en) | Air-blowing seed supply stability testing device for different seeds | |
| CN219455724U (en) | Constant temperature tensile test device | |
| CN219744866U (en) | Temperature control structure of temperature change screening test box |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |