CN210071593U - Dust environment simulation equipment and dust transmission device - Google Patents
Dust environment simulation equipment and dust transmission device Download PDFInfo
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- CN210071593U CN210071593U CN201821899493.7U CN201821899493U CN210071593U CN 210071593 U CN210071593 U CN 210071593U CN 201821899493 U CN201821899493 U CN 201821899493U CN 210071593 U CN210071593 U CN 210071593U
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Abstract
The utility model discloses a dust environment simulation equipment and dust transmission device, wherein dust transmission device includes a dust transmission unit and a negative pressure generator, wherein the dust transmission unit includes a transmission main part, wherein the transmission main part includes a load-bearing element, load-bearing element can be by the drive motion to a transmission dust, wherein negative pressure generator has a first transmission path and a second transmission path, wherein second transmission path intercommunication first transmission path and exterior space, can form the negative pressure in the first transmission path with the dust is certainly second transmission path inhales first transmission pipeline, just negative pressure generator can control the dust flow in the first transmission pipeline.
Description
Technical Field
The utility model relates to a testing arrangement, in particular to dust environment simulation equipment and dust transmission device.
Background
In recent years, global air pollution has become serious, and the concentration of PM2.5 in the air, where PM2.5 refers to particulate matter having an aerodynamic equivalent diameter of 2.5 or less in the air, also referred to as fine particulate matter, has become an important index for evaluating the quality of air. A large amount of PM2.5 can not only float in the air to cause air turbidity, but also PM2.5 is easy to carry toxic and harmful substances, such as microorganisms, heavy metals and the like. In addition, in the process of breathing, PM2.5 is easy to enter alveoli of human body, or dissolve in blood, or combine with hemoglobin in human body, thus seriously threatening the health of human body, and easily causing various respiratory diseases, cardiovascular diseases and the like.
Various dust sensors, such as PM2.5 sensors, are increasingly used in people's daily life and industrial production to detect the concentration of fine particulate matters in the air, so that users can know the quality of the air in the environment in real time. For example, as pollutants such as dust particles in the air outside the automobile and automobile exhaust can enter the inner space of the automobile, second-hand smoke in the automobile can be left in the inner air of the automobile for a long time, and harmful substances can be emitted from the inner decorations of the automobile after the automobile is exposed to the sun, even dust, dust mites at the air conditioner opening of the automobile and bacteria on a steering wheel can be left in the inner space of the automobile, which affects the health of a user, the PM2.5 sensor is applied to the automobile to detect the quality of the gas in the inner space of the automobile, so that the user can improve the environment in the automobile in time, and the requirement of the user on the quality of the air in the environment in the automobile is met.
In order to ensure that the PM2.5 sensor can meet the use requirements of users for a long time, it is necessary to detect the quality and service life of the PM2.5 sensor during the process of manufacturing the PM2.5 sensor, and ensure that the PM2.5 sensor can work normally within a predetermined period of time. Specifically, the PM2.5 sensor needs to be placed in a simulated dust environment, and the operating state of the PM2.5 sensor needs to be monitored in real time, so as to relatively accurately grasp the service life of the PM2.5 sensor, and to avoid that the finished PM2.5 sensor cannot reach the life cycle promised by the manufacturer after being sold, which reduces the user experience and satisfaction of the customer. In the actual detection process, the simulated dust environment can more accurately determine whether the detected PM2.5 sensor can normally work within the preset time or not by reaching the conditions of constant temperature, constant humidity and constant dust concentration. Once the temperature, humidity and dust concentration related parameter changes of the simulated dust environment affect the test result. Also, in the process of detecting the service life of the PM2.5, the temperature, humidity and dust concentration in the simulated dust environment need to be changed in stages, and the environmental condition parameters in each cycle need to be kept consistent, i.e., constant temperature, constant humidity and constant dust concentration, so that the life of the detected PM2.5 sensor can be determined within a predetermined detection time to improve the efficiency and accuracy of the detection. In particular, the dust amount entering the simulated dust environment directly affects the dust concentration and humidity in the simulated dust environment, and therefore, the dust amount entering the simulated dust environment needs to be accurately controlled to ensure that the environmental conditions in the simulated dust environment reach the standard, so as to accurately detect the service life of the PM2.5 sensor.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a dust environment analog device and dust transmission device, wherein dust transmission device can transmit a dust to a test space in, with simulate a detection ring border in the test space to supply to detect a dust sensor's life.
Another object of the utility model is to provide a dust environment simulation equipment and dust transmission device and transmission method thereof, wherein dust transmission device can adjust the entering dust volume in the test space, with the guarantee dust concentration in the test space reaches the test requirement, and then improves the accuracy of dust environment simulation equipment test.
An object of the utility model is to provide a dust environment simulation equipment and dust transmission device, wherein dust transmission device can with the dust transmits extremely evenly test space to do benefit to accurately control and get into dust volume in the test space, with it is invariable to simulate dust concentration in the test space detection environment, and then improve the accuracy of dust environment simulation equipment test.
Another object of the present invention is to provide a dust environment simulation device and a dust transmission device, wherein the dust can be uniformly kept in the dust transmission device to do benefit to accurately controlling the entering the dust amount in the test space.
Another object of the utility model is to provide a dust environment simulation equipment and dust transmission device, wherein the dust is at the in-process of transmission by even in dust transmission device to do benefit to accurately control and get into the dust volume in the test space.
Another object of the utility model is to provide a dust environment simulation equipment and dust transmission device, wherein through the adjustment the dust can change in the thickness after being leveled of transmission in the transmission course and is transmitted the entering dust volume in the test space.
Another object of the utility model is to provide a dust environment simulation equipment and dust transmission device, wherein the dust can be inhaled by the negative pressure in the test space, and transmit through the control the negative pressure size of dust can control the entering dust volume in the test space.
Another object of the utility model is to provide a dust environment simulation equipment and dust transmission device, wherein dust transmission device includes a transmission main part and an even flat main part, wherein the transmission main part can rotate in order to transport the dust, just the dust can be leveled by even flat main part, the adjustment the transmission main part with distance between the even flat main part can change by even flat back the thickness of dust to do benefit to the control entering dust volume in the test space.
Another object of the present invention is to provide a dust environment simulation apparatus and a dust transmission device, wherein the dust transmission device is adapted to adjust the rotation speed of the transmission main body, and the transmission main body is controlled to enter the dust amount in the test space.
Another object of the present invention is to provide a dust environment simulation device and a dust transmission apparatus, wherein the transmission main body has at least one leveling groove, the dust can be uniformly kept in the leveling groove, change the capacity of the leveling groove can be changed by the suction of negative pressure the dust amount in the test space.
According to an aspect of the present invention, the present invention provides a dust transmission method for transmitting a dust, wherein the dust transmission method comprises the following steps:
(I) allowing a bearing element to drive the dust held on the bearing element to move; and
(II) smoothing the dust moved by the carrier member by at least one smoothing member held on the upper side of the carrier member.
According to the utility model discloses an embodiment, in step (II), through a plurality of spaced apart even piece according to the precedence even by the bearing element drives and removes the dust.
According to the utility model discloses an embodiment in step (II), even when the even level of even level is driven and is removed by bearing element the dust, even level drive the dust gets into bearing element's even flat groove.
According to an embodiment of the present invention, in the above method, the leveling member levels the dust moved by the bearing member by means of elastic deformation.
According to an embodiment of the present invention, in the above method, when the leveling member is used to level the dust moved by the driving of the bearing member by generating elastic deformation, the bearing member is kept flat, so that the leveling member drives the dust to enter the leveling groove of the bearing member.
According to an embodiment of the invention, the carrier element is driven in a circular motion.
According to another aspect of the utility model, the utility model discloses a dust transmission device is further provided, it includes:
a dust transport unit, wherein the dust transport unit comprises a transport body, wherein the transport body comprises a carrier element, which can be driven in motion to transport a dust; and
a negative pressure generator, wherein negative pressure generator has a first transmission path and a second transmission path, wherein second transmission path intercommunication first transmission path and exterior space, can form the negative pressure in the first transmission path with the dust certainly second transmission path inhales first transmission pipeline, just negative pressure generator can control dust flow in the first transmission pipeline.
According to an embodiment of the present invention, the dust transporting device further comprises a leveling body, wherein the leveling body comprises at least one leveling member, the leveling member is held above the carrying element of the transporting body, and the leveling member can level the dust.
According to one embodiment of the invention, the number of levelling members is two, two of said levelling members being held spaced apart above said carrier element.
According to the utility model discloses an embodiment, even flat piece has an even plane, even flat piece even plane can take place deformation and paste in the transmission main part.
According to an embodiment of the invention, the transfer body has at least one levelling groove, the levelling member being held above the levelling groove.
According to an embodiment of the invention, the transmission body comprises a filter element having at least one through hole, the filter element being arranged in the carrier element and forming the levelling groove between the carrier element and the filter element.
According to an embodiment of the invention, the filter element is detachably arranged to the carrier element.
According to an embodiment of the present invention, the leveling main body further includes at least one supporting seat, the supporting seat is fixed to the bearing member, the leveling member is movably disposed on the supporting seat, and the leveling member can move up and down relative to the supporting seat and can be limited to a fixed position.
According to an embodiment of the invention, the transmission body comprises a drive element, which is communicably connected to the carrier element and controls the speed of movement of the carrier element.
According to an embodiment of the present invention, the dust transporting device further comprises a flow monitor communicably connected to the negative pressure generator, the flow monitor being capable of detecting a flow rate of gas in the first transporting passage.
According to another aspect of the utility model, the utility model discloses a dust environment simulation equipment is further provided, it includes:
a dust transport device, wherein the dust transport device further comprises:
a dust transport unit, wherein the dust transport unit comprises a transport body, wherein the transport body comprises a carrier element, which can be driven in motion to transport a dust; and
a negative pressure generator, wherein the negative pressure generator has a first transmission channel and a second transmission channel, wherein the second transmission channel is communicated with the first transmission channel and the external space, negative pressure can be formed in the first transmission channel to suck the dust from the second transmission channel into the first transmission pipeline, and the negative pressure generator can control the dust flow in the first transmission pipeline; and
a testing device, wherein the testing device is provided with a testing space, and the testing space is communicated with the first transmission channel of the negative pressure generator.
According to another aspect of the utility model, the utility model discloses a dust transmission device is further provided to supply a transmission dust, it includes:
the dust conveying unit comprises a driving element and a bearing element connected with the driving element, wherein the bearing element can drive the dust held on the bearing element to move; and
a leveling body, wherein the leveling body comprises at least one leveling member, wherein the leveling member is held at an upper portion of the bearing member to level the dust held at the bearing member during movement of the dust held at the bearing member by the bearing member.
According to an embodiment of the invention, the carrier element has at least one levelling groove.
According to an embodiment of the present invention, the number of leveling members is one.
According to an embodiment of the invention, the number of levelling pieces is two, and two the levelling pieces are spaced from each other.
According to an embodiment of the present invention, the leveling member is a brush.
According to another aspect of the utility model, the utility model discloses a dust environment simulation equipment is further provided, it includes:
a dust transport apparatus, comprising:
the dust conveying unit comprises a driving element and a bearing element connected with the driving element, wherein the bearing element can drive the dust held on the bearing element to move; and
a leveling body, wherein the leveling body includes at least one leveling member, wherein the leveling member is held at an upper portion of the bearing member to level the dust held at the bearing member during movement of the dust held at the bearing member by the bearing member; and
a testing device, wherein the testing device is provided with a testing space, and the testing space is communicated with the first transmission channel of the negative pressure generator.
Drawings
Fig. 1 is a schematic perspective view of a dust environment simulation device according to a preferred embodiment of the present invention.
Fig. 2A is a schematic diagram of a stage of the dust conveying device of the dust environment simulation apparatus according to the above preferred embodiment of the present invention conveying a dust.
Fig. 2B is a schematic view of a stage of the dust transmission device transmitting the dust according to the above preferred embodiment of the present invention.
Fig. 2C is a schematic view of a stage of the dust transmission device transmitting the dust according to the above preferred embodiment of the present invention.
Fig. 2D is a schematic view of a stage of the dust transmission device transmitting the dust according to the above preferred embodiment of the present invention.
Fig. 3 is a schematic view of the dust generating apparatus according to the above preferred embodiment of the present invention, which controls the amount of dust transported by controlling the flow rate of the air current.
Fig. 4 is a schematic view of the dust generating apparatus according to the above preferred embodiment of the present invention controlling the amount of dust transported by controlling the rotation speed of the carrying member.
Fig. 5 is a schematic view of the dust generating device according to the above preferred embodiment of the present invention, which controls the amount of dust transported by controlling the distance between the leveling member and the carrying platform.
Fig. 6A is a schematic view of the dust generating apparatus according to another preferred embodiment of the present invention, which controls the amount of dust transported by controlling the degree of deformation of the leveling member.
Fig. 6B is a schematic view of the dust generating device of the dust environment simulation apparatus according to another preferred embodiment of the present invention.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents and other technical solutions without departing from the spirit and scope of the invention.
It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purposes of limitation.
It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.
With reference to the accompanying drawings 1 to 2D of the specification, a dust environment simulation apparatus 100 according to the present invention will be explained in the following description, wherein the dust environment simulation apparatus 100 is capable of simulating a detection environment with constant temperature and humidity and constant dust concentration for detecting the service life of at least one dust sensor 200. Specifically, the dust environment simulation device comprises a dust transmission device 300 and a testing device 400, wherein the dust transmission device 300 can obtain dust 500, and uniformly transmit the dust 500 to a testing space 401 of the testing device 400, so as to facilitate the simulation of the detection environment with constant dust concentration in the testing space 401, and thus improve the accuracy of the service life of the dust sensor detected by the dust environment simulation device 100. Moreover, the dust transport device 300 can adjust and accurately control the amount of dust entering the test space 402 of the test device 400, and further can adjust the environmental condition parameters in the test environment in stages, so as to complete the detection of the service life of the component sensor 300 within a preset time.
It is worth mentioning that the type of dust 500 is not limited, and the dust 500 can be implemented as, but not limited to, a1 ultra fine test dust, a2 fine test dust, A3 medium grade test dust, a4 coarse test dust or other types of dust known to those skilled in the art, and the like. In addition, the type of the dust sensor 200 is also not limited, and the dust sensor 200 may be implemented as, but not limited to, a PM2.5 sensor. The specific types of dust 500 and dust sensor 200 are merely examples and should not be construed as limiting the scope and content of the present invention.
Referring to fig. 1 to 2D of the specification, the dust transporting apparatus 300 further includes a dust generating unit 10 and a dust transporting unit 20, wherein the dust generating unit 10 has a containing cavity 11 for containing particulate matters and the like to be used for forming the dust 500 later, and the dust generating unit 10 can form the dust 500 from the particulate matters and the like, for example, the dust generating unit 10 can form the dust 500 from the particulate matters and the like by means of, but not limited to, stirring, crushing, grinding, filtering and the like. Preferably, the dust generating unit 10 can control the size of the dust 500 particles. The dust transporting unit 20 includes a transporting body 21, wherein the transporting body 21 includes a carrying element 211, the dust 500 can enter the accommodating chamber 11 from the upper opening 111 of the accommodating chamber 11, and the dust 500 can fall from the lower opening 112 of the accommodating chamber 11 to the carrying element 211 of the transporting body 21 under the action of gravity. That is, the lower end opening 112 of the accommodating chamber 11 corresponds to the bearing member 211, so that the dust 500 can automatically fall to the bearing member 211 after the dust 500 is detached from the accommodating chamber 11 from the lower end opening 112 of the accommodating chamber 11.
Preferably, the carrier member 211 is in the shape of a disk, and the carrier member 211 is driven to horizontally rotate to transfer the dust 500. It should be understood that the carrier element 211 may also be embodied in other shapes, such as a polygon or an ellipse, etc.
Alternatively, the carrier element 211 is belt-shaped, and the carrier element 211 can be driven to move back and forth in the horizontal direction and the vertical direction, i.e. the transmission body 21 is a crawler-type transmission structure. For example, the transmission body 21 includes two rollers, the bearing elements 211 are circumferentially disposed on the rollers, and the rollers are respectively and alternately retained at two ends of the bearing elements, and the rollers roll to drive the bearing elements 211 to rotate so as to transmit the dust 500.
Alternatively, the carrier member 211 is in a belt shape, and the carrier member 211 can be received in a roll shape, and the carrier member 211 horizontally moves to transport the dust 500. For example, the transmission body 21 further includes two rollers and two transition shafts, the two transition shafts are held between the two rollers, the transition shafts are held above the rollers, one end of the bearing element 211 is wound around the roller on the left side, that is, the bearing element 211 is wound around the roller on the left side, one end of the bearing element 211 is sequentially passed through the two rollers and is disposed on the roller on the right side, the two rollers are driven to rotate to drive the bearing element 211 to move from the roller on the left side to the roller on the right side, while the dust 500 is continuously and horizontally transmitted, and the bearing element 211 is continuously wound around the roller on the right side, after the bearing element 211 stored in the roller on the left side is completely unfolded, the bearing element 211 stored in the right side in a wound manner is replaced to the left side, thereby continuing to transport the dust 500.
According to a preferred embodiment of the present invention, the transmission body 21 further has a transmission groove 212, the transmission groove 212 communicates with the dust transmission device 10 to hold the chamber 11, the dust 500 in the chamber 11 can fall down into the transmission groove 212 under the action of gravity. Specifically, the transmission body 21 further includes an inner wall 213 and an outer wall 214, the inner wall 213 and the outer wall 214 are disposed at intervals on the carrier element 211, and the transmission slot 212 is formed between the inner wall 213, the outer wall 214 and the carrier element 211. Preferably, the bearing element 211, the inner barrier 213 and the outer barrier 214 are of a one-piece construction.
Further, the dust 500 in the containing chamber 11 can be uniformly dropped on the bearing member 211 of the conveying body 21. Specifically, the dust generating unit 10 includes a discharging body 12 and a material controlling mechanism 13, wherein the accommodating chamber 11 is formed in the discharging body 12, the material controlling mechanism 13 is held in the accommodating chamber 11, and the material controlling mechanism 13 can control the particle size of the dust 500 in the accommodating chamber 11 and the amount of the dust 500 falling onto the carrying element 211 of the transporting body 21. For example, the material control mechanism 13 can movably block the lower end opening 112 of the accommodating chamber 11 to change the amount of dust falling from the lower end opening 112 of the accommodating chamber 11 to the bearing element 211, i.e. change the thickness of the dust 500 accumulated on the bearing element 211. Preferably, the material control mechanism 13 may be implemented by a stirring motor, and the rotating speed of the stirring motor is controlled to control the particle size of the dust 500 and the amount of the dust 500 falling onto the bearing element 211 of the dust transmission unit 20, so as to ensure that the dust 500 can uniformly fall onto the bearing element 211 of the dust transmission unit 20, which is beneficial to uniformly transmitting the dust 500 into the test space 401 of the test device 400 in the subsequent process, so as to ensure that the dust transmission device 300 can accurately control the amount of the dust entering the test space 401. For example, the material control mechanism 13 controls the particle size of the dust 500 by, but not limited to, stirring, crushing, grinding, filtering, etc.
Preferably, the blanking main body 12 is funnel-shaped, that is, the cross-sectional area of the lower part of the blanking main body 12 is smaller than that of the upper part of the blanking main body 12, which is beneficial to guide the dust 500 contained in the containing cavity 11 of the blanking main body 12 to orderly enter the transmission groove 212 of the transmission main body 21 of the dust transmission unit 20, so as to avoid the dust from being blocked in the containing cavity 11.
In addition, the dust generating unit 10 includes a supporting frame 14, the blanking main body 12 is disposed on the supporting frame 14, and the blanking main body 12 is stably held above the bearing element 211, and the lower end opening 112 of the accommodating chamber 11 communicates with the accommodating chamber 11 and the transmission groove 212.
Preferably, the blanking main body 12 is movably mounted on the supporting frame 14, and the distance between the blanking main body 12 and the bearing element 211 of the conveying main body 21 can be adjusted to change the thickness of the dust 500 accumulated on the bearing element 211.
Further, the dust generating unit 10 includes a vibrating member 15, the vibrating member 15 is disposed on the supporting frame 14, the vibrating member 15 can vibrate to vibrate the supporting frame 14 and drive the discharging main body 12 to vibrate, so that the dust 500 contained in the containing cavity 11 of the discharging main body 12 can vibrate in the containing cavity 11 and orderly fall on the bearing element 211, so as to avoid the dust 500 from being blocked in the containing cavity 11. Preferably, the vibration member 15 may be implemented as a vibration motor.
Referring to fig. 1 to 2D of the specification, in an embodiment of the present invention, the dust transfer unit 20 includes a leveling body 22, and the leveling body 22 can level the dust 500 accumulated on the supporting member 211, so that the dust 500 can be uniformly held on the supporting member 211. Further, the carrying element 211 of the conveying body 20 can be driven to move relative to the leveling body 22, so that the dust 500 falling to the carrying element 211 is leveled during the conveying.
According to an embodiment of the present invention, the leveling body 22 comprises at least one leveling member 221, and the leveling member 221 is held above the bearing member 211 to level the dust 500 passing through the leveling member 221. Preferably, said levelling member 221 is arranged at a predetermined vertical distance H from said carrying element 211 of said transmission body 211So that the dust 500 is flattened on the carrier element 211 by the leveler 221 during the process that the carrier element 211 carried on the transmission body 21 is transmitted, so that the dust 500 passing through the carrier element 211 is maintained at a predetermined thickness. It should be understood that in some embodiments of the present invention, the predetermined vertical distance H between the leveler 221 and the bearing element 2111The predetermined thickness of the dust 500 after passing through the leveler 221 of the leveler body 22 is determined. In other words, changing the vertical distance between the leveling member 221 and the bearing element 211 can change the amount of the dust 500 uniformly borne on the bearing element 211, thereby facilitating the subsequent control of the amount of the dust entering the test space 401.
Preferably, the specific number of said levelling pieces 221 is implemented as two, defining two said levelling pieces 221 as a first levelling piece 2211 and a second levelling piece 2212, respectively, said first levelling piece 2211 and said second levelling piece 2212 are arranged above said bearing element 211 of said transmission body 21 at a distance from each other, and said predetermined vertical distance H exists between said first levelling piece 2211 and said second levelling piece 2212 and said bearing element 2111Thereby enabling the dust 500 accumulated on the bearing member 211 to be leveled by the first leveling member 2211 and the second leveling member 2212. When the dust 500 dropped on the carrying member 211 from the containing chamber 11 of the dust generating unit 10 falls on the carrying member 211 and moves toward the first leveling member 2211, the dust 500 is leveled for the first time to avoid the accumulation of the dust 500, and the dust 500 continues to face toward the first leveling member 2211The second leveling member 2212 moves and is leveled for the second time, and the dust 500 is leveled twice by the leveling body 22 during the transportation, further keeping the dust 500 to be uniformly held on the bearing member 211. It should be understood that the specific number of the leveling members 221 of the leveling body 22 is not limited, and the leveling members 221 may be implemented in one or more, so that the dust 500 is transferred into the test space 401 of the test device 400 after being leveled one or more times, to facilitate simulation of the test environment in which the temperature is constant, the humidity is constant, and the dust concentration is constant in the test space 401.
The levelling body 22 further comprises at least one support seat 222, the support seat 222 being fixed to the bearing element 211, the levelling member 221 being arranged on the support seat 222 such that the levelling member 221 is stably held above the bearing element 211. Referring to fig. 5, preferably, the leveling member 221 is movably disposed on the supporting seat 222, and the leveling member 221 can move up and down relative to the supporting seat 222 and can be limited to a fixed position, so that the predetermined vertical distance H between the leveling member 221 and the bearing element 211 is set1Can be adjusted, and then change by even piece 221 even the thickness of the dust 500 after being even to be favorable to in the follow-up control get into the dust volume in test space 401, thereby ensure the dust concentration in test space 401.
Further, the transporting body 21 of the dust transporting unit 20 has at least one leveling groove 215, the leveling groove 215 communicates with the transporting groove 212, the leveling body 22 is held above the leveling groove 215, the leveling groove 215 communicates with the accommodating chamber 11 of the dust generating unit 10, the dust 500 can directly fall from the accommodating chamber 11 into the leveling groove 215, and the dust 500 falling to the transporting body 20 can be leveled by the leveling body 22 into the leveling groove 215 and stably held in the leveling groove 215, thereby ensuring that the dust 500 can be transported in a manner of being uniformly held by the carrying member 211 to prevent the dust 500 from being accumulated, facilitating the subsequent uniform transportation of the dust 500 to the testing space 401 of the testing device 400.
In a preferred embodiment of the present invention, the transmission body 21 further comprises a filter member 216, wherein the filter member 216 has at least one through hole 2161, the filter member 216 is disposed in the transmission slot 212 of the transmission body 21, the through hole 2161 communicates with the transmission slot 212, and the filter member 216 is held on the supporting element 211 in a manner of being attached to the surface of the supporting element 211, thereby forming the leveling slot 215 between the filter member 216 and the supporting element 211.
Further, the leveling member 221 of the leveling body 22 can be attached to the surface of the filter member 216 such that the leveling member 221 is held above the leveling groove 215, and the leveling member 221 can cover the opening of the leveling groove 215 such that the dust 500 just can fill the leveling groove 215 through the leveling member 221, further contributing to ensuring that the dust 500 is uniformly transported to the test space 401 of the test apparatus 400.
Preferably, the filter element 216 can be embodied as a sieve. More preferably, the filter elements 216 are removably retained to the carrier element 211 to facilitate individual replacement or maintenance of the filter elements 216 to preserve the useful life of the transport body 21. In other embodiments of the present invention, different filter members 216 have different sizes of the through holes 2161, the filter members 216 having different sizes of the through holes 2161 are mounted on the supporting member 211, the leveling grooves 215 formed between the filter members 216 and the supporting member 211 can have different capacities, and thus the user can adjust the amount of dust required during the testing process by replacing different filter members 216.
Preferably, the leveling groove 215 is formed directly on the bearing element 211, i.e., the surface of the bearing element 211 is recessed inward to form the leveling groove 215. Alternatively, the carrier element 212 is made of metal, such as copper, iron, stainless steel, etc., and the leveler slot 215 can be made by a stamping process.
Preferably, the leveling grooves 215 are multiple in number, and the leveling grooves 215 are uniformly and orderly distributed on the bearing element 211, so that the dust 500 can be uniformly held on the bearing element 211 and can be uniformly conveyed into the test space 401 of the test device 400 subsequently. It should be understood that the capacity of the leveling grooves 215 and the distribution density of the leveling grooves 215 determine the amount of dust held on the bearing member 211 after leveling.
Alternatively, the number of the leveling grooves 215 may be implemented as one, one leveling groove 215 being formed circumferentially in the carrier member 211, the leveling groove 215 communicating with the dust control chamber 11 of the dust generating unit 10. Preferably, the lower end of the leveling body 22 is held at the opening position of the leveling groove 215, that is, the lower end of the leveling body 22 and the opening of the leveling groove 211 are held on the same plane, and the dust 500 accumulated in the leveling groove 215 and exceeding the opening position of the leveling groove 215 can be blocked by the leveling body 221 and leveled while the carrier element 211 rotates relative to the leveling body 22, thereby ensuring that the dust 500 can be held uniformly on the carrier element 211.
In another embodiment of the present invention, the leveling member 221 has a leveling surface 2201 and a bottom surface 2202 extending from the leveling surface 2201, the leveling member 221 is held above the bearing element 211 in such a manner that the bottom surface 2202 is attached to the bearing element 211 and the leveling surface 2201 faces the dust generating unit 10, the bottom surface 2202 and the bearing element 211 generate friction during the movement of the bearing element 211, and when the accumulated dust 500 passes through the leveling surface 2201 of the leveling member 221, the leveling surface 2201 of the leveling member 221 blocks the dust 500, the bearing element 211 continues to rotate, and the dust 500 can pass between the bottom surface 2202 of the leveling member 221 and the surface of the bearing element 211 and be held uniformly on the bearing element 211. It should be appreciated that in other embodiments, the bottom surface 2202 of the leveler 221 is attached to the surface of the filter element 216 and the dust 500 can pass between the bottom surface 2202 of the leveler 221 and the filter element 216.
Preferably, with reference to fig. 6A, the levelling piece 221 can be held above the bearing element 211 in a deformed manner. Preferably, the leveling member 221 is deformable by being blocked by the bearing member 211 and the filter member 216, the leveling surface 2201 of the leveling member 221 faces the dust generating unit 10, and the leveling member 221 is deformed by the leveling surface 2201 to partially cover the upper end opening of the leveling groove 215, and the bearing member 211 is held above the bearing member 211. The leveling surface 2201 of the leveling member 221 can block the accumulated dust 500, and the accumulated dust 500 is uniformly pushed by the leveling surface 2201 of the leveling member 221 to be leveled with the leveling groove 215 during the driving movement of the carrier member 211, and is uniformly held by the carrier member 211 of the transmission body 22. For example, the leveling member 221 can be made of, but not limited to, rubber, silicon, or plastic, and the supporting element 211 can be made of, but not limited to, metal, ceramic, stone, glass, or other materials. Preferably, the smoothing member 221 may be implemented as a brush.
Further, by changing the degree of deformation of the leveling member 221, the thickness of the dust 500 passing through the leveling member 221 can be controlled, and the amount of the dust 500 after leveling can be determined. For example, if the degree of elastic deformation of the leveling member 221 is increased, the friction between the leveling surface 2201 of the leveling member 221 and the bearing element 211 is increased, and the leveling member 221 can block more dust 500 from passing through the leveling member 221, which is beneficial to reducing the amount of dust entering into the test space 401; when the degree of elastic deformation of the leveler 221 is reduced, the friction between the leveler 2201 of the leveler 221 and the carrier element is reduced, and more dust 500 can be uniformly held on the carrier element 211 with the movement of the carrier element 211, so that more dust 500 can be subsequently transferred to the test space 401, thereby increasing the dust concentration in the test space 401.
Referring to fig. 6B, in another embodiment of the present invention, the bearing member 211 may be held under the leveling member 221 in a manner that a portion of the bearing member is blocked by the leveling member 221 to be deformed, and the leveling member 221 may cover the leveling groove 215. When the carrier element 211 passes through the leveling member 221 during rotation, the position of the carrier element 211 corresponding to the bottom surface 2202 of the leveling member 221 is deformed, and the dust 500 accumulated on the carrier element 211 is blocked by the leveling surface 2201 of the leveling member 221 and leveled. Preferably, the bottom surface 2202 of the leveling member 221 has a curvature, and the bearing element 211 passing through the leveling member 221 can be smoothly deformed, so that the bearing element 211 is prevented from shaking the leveled dust 500 during deformation recovery, and the dust 500 is uniformly held on the bearing element 211. It should be understood that the degree of deformation of the bearing element 211 is adjusted by controlling the height of the leveling member 221, and thus the frictional force between the leveling member 221 and the bearing element 211 can be changed to control the amount of dust passing through the leveling member 221.
According to a preferred embodiment of the present invention, the dust transporting device 100 comprises a flow control unit 30, wherein the flow control unit 30 can transport the dust 500 uniformly held on the bearing element 211 of the transporting body 21 into the testing space 401 of the testing device 400. Specifically, the flow control unit 30 includes a negative pressure generator 31, wherein the negative pressure generator 31 has a first transmission channel 311 and a second transmission channel 312, wherein the second transmission channel 312 communicates the first transmission channel 311 and the transmission groove 212 of the transmission body 21, that is, the opening of the second transmission channel 312 is located above the bearing element 211. A flow of air can be flowed from the first transfer passage 311 of the negative pressure generator 31 to the test space 401 of the test apparatus 400 at a predetermined flow rate in the negative pressure generator 31. Further, when the air flow flows in the first conveying channel 311 of the negative pressure generator 31 at the predetermined flow rate, the pressure of the air in the first conveying channel 311 is lower than the pressure of the air in the second conveying channel 312 and the ambient pressure, so that a negative pressure environment is formed in the negative pressure generator 31, the dust 500 carried on the carrying element 211 is sucked into the second conveying channel 312, and the dust 500 enters the first conveying channel 311 and is carried by the air flow in the first conveying channel 311 to be conveyed into the testing space 401 of the testing device 400.
Further, the negative pressure generator 31 includes a first transmission pipe 313, a second transmission pipe 314 and a negative pressure generating body 315, the first transfer passage 313 and the second transfer passage 314 are provided to the negative pressure generating body 315, wherein the first transmission channel 311 is formed at the first transmission pipe 313, the transmission channel 312 is formed at the second transmission pipe 314, the second transmission pipe 314 is disposed at the first transmission pipe 313, and the second transfer pipe 314 is located between the first transfer pipe 313 and the carrying member 211 of the transfer body 21 of the dust transfer unit 20, the first transmission pipe 313 can be connected to the testing device 400, and the negative pressure generating body 315 can drive the air flow from the first transmission channel 311 into the detection space 401 of the testing device 400 at the predetermined flow rate. The dust 500 uniformly carried on the carrying element 211 of the transmission body 21 sequentially passes through the first transmission pipe 313 and the second transmission pipe 314 of the negative pressure generator 31 and enters the test space 401 of the test device 400 by the negative pressure generator 31. Preferably, the second conveying pipe 314 is disposed at the first conveying pipe 313 in a manner perpendicular to the first conveying pipe 313, thereby facilitating smooth entry of the dust 500 into the first conveying passage 311.
Further, the negative pressure generating body 315 of the negative pressure generator 31 can adjust the predetermined flow rate of the air flow, so as to change the air pressure in the first flow channel 311 of the negative pressure generator 31, so as to change the suction force of the negative pressure generator 31, and further control the amount of the dust 500 entering the first conveying channel 311, so as to ensure the dust concentration in the detection space 401 of the testing device 400.
Specifically, referring to FIG. 3, the gas flow velocity V in the first transfer passage 311 is increased1The pressure of the gas in the first transmission channel 311 can be reduced, so that the pressure difference between the first transmission channel 311 and the external space is increased, the suction force formed by the negative pressure environment in the negative pressure generator 31 is increased, and more dust 500 is favorably sucked into the test space 401, so as to improve the dust concentration in the test space 401. Further, the gas flow velocity V in the first transfer passage 311 is reduced1The pressure of the gas in the first transmission channel 311 can be increased, so that the pressure difference between the first transmission channel 311 and the external space is reduced, the suction force formed by the negative pressure environment in the negative pressure generator 31 is reduced, and the amount of the dust 500 sucked into the test space 401 is reduced, so as to reduce the dust concentration in the test space 401. Further, the negative pressure generator 31 can uniformly change the gas flow velocity V in the first transfer passage 3111。
Preferably, the flow control unit 30 further comprises a flow monitor 32. The flow monitor 32 is communicably connected to the negative pressure generating body 315 of the negative pressure generator 31, the flow monitor 32 can detect the flow rate of the gas in the first transmission passage 311 and the flow rate of the mixture gas entering the detection space 401 of the testing device 400 from the first transmission passage 311, and then the flow monitor 32 can cooperate with the negative pressure generator 31 to control the amount of the dust entering the detection space 401, thereby ensuring that the dust concentration in the detection space 401 meets the testing requirement, and ensuring the accuracy of the dust environment simulation apparatus 100 in detecting the lifetime of the dust sensor 200. Preferably, the flow rate of the mixed gas refers to A2 dust and air with normal temperature and 8% RH humidity. Preferably, the flow monitor 32 may be implemented as, but is not limited to, a float gauge.
Further, the transmission body 21 comprises a support base 217, wherein the transmission body 21 can be driven to rotate relative to the support base 217, and the bearing element 211 can move along the leveling body 22 towards the second transmission pipe 314 of the negative pressure generator 31, so as to continuously transmit the leveled dust 500 to the negative pressure generator 31 of the flow control unit 30.
Further, the transmission body 21 comprises a driving element 218, the driving element 218 is disposed on the carrying element 211, and the driving element 218 can precisely control the rotation speed of the carrying element 211. Preferably, the drive element 218 is mounted to the support base 217. Preferably, the drive element 218 is implemented as a drive motor. The rotation speed of the carrier member 211, and thus the transport speed of the dust 500, is precisely controlled by precisely controlling the magnitude of the output power of the drive-advancement motor, so as to facilitate control of the amount of the dust 500 passing through the negative pressure generator 31. Referring to fig. 4, when the rotation speed V of the carrier 211 is high2Accelerating, the amount of dust passing through the negative pressure generator 31 is increased, and then the amount of dust which can be transmitted to the test space 401 by the negative pressure generator 31 is increased, which is beneficial to improving the dust concentration in the test space 401; when the rotational speed V of the carrier 211 is2And the dust amount passing through the negative pressure generator 31 is reduced, so that the dust amount transmitted to the test space 401 by the negative pressure generator 31 is reduced, and the reduction of the dust concentration in the test space 401 is facilitated.
Further, the dust transporting device 300 includes a housing 40, the housing 40 has a containing cavity 41 and a feeding port 42, wherein the feeding port 42 is communicated with the containing cavity 41, the dust generating unit 10, the dust transporting unit 20 and the flow control unit 30 are contained in the housing 40, and the dust 400 can be added into the material control cavity 11 of the dust generating unit 10 through the feeding port 42. Specifically, the housing 40 includes a housing main body 43 and a cover plate 44, and the cover plate 44 is movably disposed on the housing main body 43, so that the accommodating chamber 41 and the feeding port 42 can be closed, so as to prevent the dust 400 from overflowing from the feeding port 42 to pollute the environment. Preferably, the housing main body 43 and/or the cover plate 44 are transparent, so that the condition in the accommodating space 41 can be observed through the housing main body 43 and/or the cover plate 44, especially, the remaining amount of the dust 500 in the material control chamber 11 of the dust generating unit 10 can be observed at any time through the cover plate 44, and the dust 500 is added at any time, so as to ensure that the sufficient dust 500 is always present in the material control chamber 11 of the dust generating unit 10.
Further, the dust transporting apparatus 300 includes a power supply unit 50, the power supply unit 50 is accommodated in the accommodating chamber 41 of the housing 40, and the power supply unit 50 is electrically connected to and provides power supply for the driving element 218 of the dust transporting unit 20, the material control mechanism 13 of the dust generating unit 10, the vibrating member 15, the negative pressure generator 31 of the flow control unit 30, and the flow monitor 32.
The utility model discloses a dust transmission method of dust transmission device 300 is further provided, wherein dust transmission method includes following step:
(i) transporting said dust 500 into said test space 401; and
(ii) uniformly changing the amount of the dust 500 entering the test space 401.
Specifically, the step (I) further comprises a step (III): forming a negative pressure and transporting the dust to the test space. The negative pressure generating body 315 of the negative pressure generator 31 controls the airflow to flow through the first conveying channel 312 according to the predetermined flow rate, so as to form the negative pressure environment in the negative pressure generator 31, and thus the dust of the bearing element 211 can be sucked into the first conveying channel 312.
Further, step (iii) is preceded by step (i): the dust 500 is leveled on the bearing component 311. Specifically, the step (i) further comprises the following steps:
(i.1) dropping the dust 500 onto the carrier 211; and
(i.2) rotating the carrier member 211.
Further included in step (i.1) is step (i.3): the dust 500 accommodated in the accommodating chamber 11 of the dust generating unit 10 is vibrated. Specifically, the vibration member 15 vibrates to drive the discharging main body 12 to vibrate, so that the dust 500 contained in the containing cavity 11 of the discharging main body 12 shakes in the containing cavity 11 and orderly falls on the bearing element 211, thereby preventing the dust 500 from being blocked in the containing cavity 11.
According to a preferred embodiment of the present invention, the step (i) further comprises a step (i.5): the dust 500 accumulated on the supporting member 221 is blocked by the leveling member 221 to level the dust 500. In particular, the levelling member 221 is arranged at the predetermined vertical distance H from the carrying element 211 of the transport body 211So that the dust 500 is flattened on the carrier element 211 by the leveler 221 during the process that the carrier element 211 carried on the transmission body 21 is transmitted, so that the dust 500 passing through the carrier element 211 is maintained at a predetermined thickness. Preferably, the step (II) further comprises the step (II.4): adjusting the predetermined vertical distance H between the leveler 221 and the bearing element 2111So as to change the amount of dust transported by the transporting body 21, and further facilitate controlling the amount of dust transported from the negative pressure generator 31 to the testing space 401, as shown in fig. 5.
Preferably, step (i.1) further comprises step (i.4): the dust 500 is received by the leveling grooves 215. Specifically, the dust 500 is orderly dropped from the containing chamber 11 into the leveling groove 215, and the dust 500 higher than the upper end opening of the leveling groove 215 can be blocked by the leveling member 221 during the rotation of the carrier member 211, so that the dust 500 can be uniformly held in the leveling groove 215.
Preferably, the step (II) further comprises the step (II.1): the negative pressure is controlled to adjust the suction force on the dust 500. In particular, with reference to fig. 3, the gas flow rate V in the first transfer channel 311 is reduced1The pressure of the gas in the first transmission channel 311 can be increased, so that the pressure difference between the first transmission channel 311 and the external space is reduced, the suction force formed by the negative pressure environment in the negative pressure generator 31 is reduced, and the amount of the dust 500 sucked into the test space 401 is reduced, so as to reduce the dust concentration in the test space 401.
Preferably, the step (II) further comprises the step (II.2): adjusting the output power of a driving element to control the rotation speed of the bearing element. Referring to fig. 4, when the rotation speed V of the carrier 211 is high2Accelerating, the amount of dust passing through the negative pressure generator 31 is increased, and then the amount of dust which can be transmitted to the test space 401 by the negative pressure generator 31 is increased, which is beneficial to improving the dust concentration in the test space 401; when the rotational speed V of the carrier 211 is2And the dust amount passing through the negative pressure generator 31 is reduced, so that the dust amount transmitted to the test space 401 by the negative pressure generator 31 is reduced, and the reduction of the dust concentration in the test space 401 is facilitated.
Preferably, the step (II) further comprises the step (II.3): the capacity of the levelling tank 215 is varied to control the amount of dust 500 in transit. Specifically, by replacing the filter element 216 with through holes 2161 of different sizes with the carrier element 211, the smoothing groove 215 that can be formed between the filter element 216 and the carrier element 211 can have different capacities, and the user can adjust the amount of dust required during the testing process by replacing a different filter element 216.
Preferably, the step (II) further comprises the step (II.1): and controlling the negative pressure to adjust the suction force on the dust. Specifically, when the degree of elastic deformation of the leveling member 221 is increased, the friction between the leveling surface 2201 of the leveling member 221 and the bearing element 211 is increased, and the leveling member 221 can block more dust 500 from passing through the leveling member 221, which is beneficial to reducing the amount of dust entering the test space 401; when the degree of elastic deformation of the leveler 221 is reduced, the friction between the leveler 2201 of the leveler 221 and the carrier element is reduced, and more dust 500 can be uniformly held on the carrier element 211 with the movement of the carrier element 211, so that more dust 500 can be subsequently transferred to the test space 401, thereby increasing the dust concentration in the test space 401.
It will be appreciated by persons skilled in the art that the above embodiments are only examples, wherein features of different embodiments may be combined with each other to obtain embodiments which are easily imaginable in accordance with the disclosure of the invention, but which are not explicitly indicated in the drawings.
It will be understood by those skilled in the art that the embodiments of the present invention as described above and shown in the drawings are given by way of example only and are not limiting of the present invention. The objects of the present invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the embodiments without departing from the principles, embodiments of the present invention may have any deformation or modification.
Claims (12)
1. A dust transport apparatus, comprising:
a dust transport unit, wherein the dust transport unit comprises a transport body, wherein the transport body comprises a carrier element, which can be driven in motion to transport a dust; and
a negative pressure generator, wherein negative pressure generator has a first transmission path and a second transmission path, wherein second transmission path intercommunication first transmission path and exterior space, can form the negative pressure in the first transmission path with the dust certainly second transmission path inhales first transmission pipeline, just negative pressure generator can control dust flow in the first transmission pipeline.
2. The dust transport device of claim 1, wherein the dust transport device further comprises a levelling body, wherein the levelling body comprises at least one levelling member, the levelling member being held above the carrier element of the transport body and the levelling member being capable of levelling the dust.
3. The dust transport device of claim 2, wherein the number of levelers is two, the two levelers being held above the carrier element at a distance from each other; or the leveling piece is provided with a leveling surface, the leveling surface of the leveling piece can be deformed to be attached to the transmission main body or the transmission main body is provided with at least one leveling groove, and the leveling piece is kept above the leveling groove; or two levelling members, the two levelling members being held above the carrier element at a distance from each other, the conveying body having at least one levelling groove, the levelling members being held above the levelling groove.
4. A dust transport apparatus according to claim 3, wherein the transport body includes a filter member having at least one through hole, the filter member being disposed on the carrier element and forming the smoothing groove between the carrier element and the filter member; or the transmission main body comprises a filter element with at least one through hole, the filter element is detachably arranged on the bearing element, and the even groove is formed between the bearing element and the filter element.
5. The dust transporting device of claim 4, wherein the leveling body further comprises at least one support seat fixed to the bearing element, the leveling member is movably disposed on the support seat, and the leveling member is capable of moving up and down relative to the support seat and being restrained at a fixed position or the transporting body comprises a driving element communicably connected to the bearing element and controlling a moving speed of the bearing element; or the dust transport device further comprises a flow monitor communicatively coupled to the negative pressure generator, the flow monitor capable of detecting an amount of airflow within the first transport path.
6. A dust environment simulation apparatus, comprising:
the dust transport apparatus of any one of claims 1 to 5; and
a testing device, wherein the testing device is provided with a testing space, and the testing space is communicated with the first transmission channel of the negative pressure generator.
7. A dust conveying device for conveying a dust, comprising:
the dust conveying unit comprises a driving element and a bearing element connected with the driving element, wherein the bearing element can drive the dust held on the bearing element to move; and
a leveling body, wherein the leveling body comprises at least one leveling member, wherein the leveling member is held at an upper portion of the bearing member to level the dust held at the bearing member during movement of the dust held at the bearing member by the bearing member.
8. The dust transport apparatus of claim 7, wherein the carrier element has at least one leveling channel; or the bearing element is provided with at least one leveling groove, and the number of the leveling pieces is one; or the carrying element has at least one levelling groove, the number of levelling pieces is two, and the levelling pieces are spaced from each other.
9. A dust transport apparatus according to claim 7 or 8, wherein the levelling member is a brush.
10. A dust environment simulation apparatus, comprising:
a dust transport device, wherein the dust transport device comprises:
the dust conveying unit comprises a driving element and a bearing element connected with the driving element, wherein the bearing element can drive dust held on the bearing element to move; and
a leveling body, wherein the leveling body includes at least one leveling member, wherein the leveling member is held at an upper portion of the bearing member to level the dust held at the bearing member during movement of the dust held at the bearing member by the bearing member; and
a testing device, wherein the testing device is provided with a testing space, and the testing space is communicated with the dust conveying device to receive the dust.
11. A dust environment simulating assembly according to claim 10 wherein said carrier member has at least one leveling groove; or the bearing element is provided with at least one leveling groove, and the number of the leveling pieces is one; or the carrying element has at least one levelling groove, the number of levelling pieces is two, and the levelling pieces are spaced from each other.
12. A dust environment simulating assembly according to claim 10 or 11 in which the levelling member is a brush.
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| CN201821899493.7U CN210071593U (en) | 2018-11-16 | 2018-11-16 | Dust environment simulation equipment and dust transmission device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109765152A (en) * | 2018-11-16 | 2019-05-17 | 江苏日盈电子股份有限公司 | Dust environment simulation equipment and dust transmitting device and its dust transmission method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109765152A (en) * | 2018-11-16 | 2019-05-17 | 江苏日盈电子股份有限公司 | Dust environment simulation equipment and dust transmitting device and its dust transmission method |
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