CN113219521B - Radon detector and calibration method thereof - Google Patents
Radon detector and calibration method thereof Download PDFInfo
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- CN113219521B CN113219521B CN202110654733.7A CN202110654733A CN113219521B CN 113219521 B CN113219521 B CN 113219521B CN 202110654733 A CN202110654733 A CN 202110654733A CN 113219521 B CN113219521 B CN 113219521B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T7/00—Details of radiation-measuring instruments
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T7/00—Details of radiation-measuring instruments
- G01T7/005—Details of radiation-measuring instruments calibration techniques
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Abstract
The invention discloses a radon measuring instrument and a calibration method thereof, wherein the radon measuring instrument comprises a main machine body, the outer side of the main machine body is provided with a shell, a plurality of sliding plates capable of sliding in sequence are arranged in the shell, and the left side and the right side of each sliding plate form a wind cavity with variable volume; a driving mechanism for driving the sliding plates to slide is arranged in the shell, the driving mechanism rotates forwards to drive the sliding plates to move to one side simultaneously, the driving mechanism rotates backwards to drive the single sliding plate to slide to the other side in sequence, a plurality of air inlets and air outlets which are matched with each other are arranged on the outer side of the shell, and the sliding plates slide in sequence to drive external air to enter an air cavity in the shell through the air inlets; the second sliding plate and the third sliding plate are driven to move leftwards, and then sucked air is stored in an air cavity formed by the first sliding plate, the second sliding plate and the inner wall of the shell and in an air cavity formed by the second sliding plate, the third sliding plate and the inner wall of the shell, so that the detection of multiple air positions is completed.
Description
Technical Field
The invention relates to the technical field of radon measuring instruments, in particular to a radon measuring instrument and a calibration method thereof.
Background
Radon gas is a radioactive gas, and its half-life is 3.824 days in the radioactive uranium series; its first generation daughter 218Po had a half-life of 3.05min, the second generation daughter 2pb of 26.8min, and the third generation daughter 214Po of 26.8min. The method for measuring radon by the balloon method is a rapid and accurate radon measuring method and has the characteristics of simplicity and convenience in operation, convenience in carrying, high sensitivity and the like. In the air suction stage, a filter membrane 1 is arranged at an air inlet, air is sucked into the balloon for 5 minutes at the speed of 30L/min, so that the radon daughter in the atmosphere is completely collected on the filter membrane 1, and the radon gas without the radon daughter enters the balloon; standing for 5 minutes to allow radon gas in the balloon to decay into a first generation daughter 218po thereof; in the exhaust stage, a filter membrane 2 is arranged at an air outlet, and the air is exhausted at the speed of 30L/min, so that the new decayed daughter of the radon gas in the balloon is collected on the filter membrane 2; a daughter measurement stage, wherein when the gas is exhausted for 2 minutes, the daughter collecting filter membrane 1 is placed into a probe for measurement, and the measurement time is 3 minutes; and in the radon gas measuring stage, the radon gas collecting filter membrane 2 is placed in a probe for measuring, and the measuring time is 10 minutes. The total radon measurement by the one-shot balloon method takes 26 minutes.
The chinese invention patent CN 102818906B discloses an automatic ventilation balloon emanometer, comprising: room and A-frame are collected to host computer, radon gas, the host computer includes radon gas sampling device, gas circuit automatic switching control equipment and probe, wherein, radon gas sampling device for collect the filtration to radon gas: the automatic gas circuit switching device is used for smooth switching between gas circuits when the balloon is pumped or exhausted, and reversible gas flow circuits are realized. According to the automatic ventilation type balloon radon measuring instrument, the radon sampling device and the probe are arranged in the same host, and the step of manually replacing the gas circuit is omitted through the automatic gas circuit switching device, so that gas leakage in the manual replacing process is avoided, and the reliability of the balloon radon measuring instrument is improved; the automatic ventilation type balloon emanometer is arranged on the triangular support, and is convenient for field use.
However, when the device is used for testing, when air in multiple directions or multiple positions needs to be tested, the balloon needs to be detached and then installed during testing, the operation is complex, and monitoring can not be performed on multiple positions simultaneously, so that the use is limited to a certain extent.
Therefore, it is necessary to provide a radon measuring instrument and a calibration method thereof to solve the above technical problems.
Disclosure of Invention
The invention aims to provide a radon measuring instrument and a calibration method thereof, and aims to solve the problems that in the prior art, when air in multiple directions or multiple positions needs to be tested, a balloon needs to be detached and then installed during testing, the operation is complex, and monitoring can not be performed on multiple positions simultaneously, so that the use is limited to a certain extent.
In order to achieve the purpose, the invention provides the following technical scheme: the radon measuring instrument comprises a host body, wherein a shell is arranged on the outer side of the host body, and the radon measuring instrument is characterized in that: a plurality of sliding plates capable of sliding in sequence are arranged in the shell, and the left side and the right side of each sliding plate form an air cavity with variable volume; the shell is internally provided with a driving mechanism for driving the sliding plates to slide, the driving mechanism positively rotates to drive the plurality of sliding plates to move towards one side simultaneously, the driving mechanism reversely rotates to drive the single sliding plate to slide towards the other side in sequence, the outer side of the shell is provided with a plurality of air inlets and air outlets which are matched with each other, and the sliding plates sequentially slide to drive external air to enter the air cavity inside the shell through the air inlets.
During specific use, because the slide forms sealed wind chamber with the shell, when the slide is inside when moving to the right side in the shell, the left space of slide increases, and pressure reduces correspondingly, can make the air intake enter into inside the shell under the effect of outside atmospheric pressure this moment, and when the slide moved left, can extrude the left wind chamber of the inside slide of shell to the inside air in messenger's wind chamber passes through air outlet department and flows.
As a further scheme of the invention, the air inlet and the air outlet comprise a first air inlet and a first air outlet which are arranged on one side of the shell and are matched with each other for use, a first air inlet probe is arranged at the first air inlet, and a first air outlet probe is arranged at the first air outlet; the second air inlet and the third air inlet are arranged on one side, far away from the first air inlet, of the top of the shell, a second air inlet probe is arranged at the second air inlet, and a third air inlet probe is arranged at the third air inlet; and the second air outlet and the third air outlet are arranged at one side of the bottom of the shell, which is close to the first air inlet, the second air outlet is provided with a second air outlet probe, and the third air outlet is provided with a third air outlet probe.
During the specific use, through the cooperation of first air intake probe and the first probe of giving vent to anger, can detect the air in one of them wind chamber, and on the same hand, give vent to anger the probe cooperation through second air intake probe and second and can detect the air that has the wind intracavity portion of a formation to analogize, can detect the air of a plurality of different directions or positions.
As a further scheme of the invention, a first one-way valve is arranged at the first air inlet probe and used for allowing outside air to enter the shell in a one-way mode, and a second one-way valve is arranged at the first air outlet probe and used for allowing air in the shell to flow to the outside of the shell in a one-way mode.
When the air-conditioning device is used, the first one-way valve enables outside air to enter the shell in a one-way mode, and the second one-way valve enables the air inside the shell to flow towards the outside of the shell in a one-way mode.
As a further scheme of the present invention, the bottom ends of the second air inlet probe and the third air inlet probe are provided with a first sealing lifting assembly for sequentially sealing the second air inlet probe and the third air inlet probe, the bottom ends of the second air outlet probe and the third air outlet probe are provided with a second sealing lifting assembly for sequentially sealing the second air outlet probe and the third air outlet probe, and both the first sealing lifting assembly and the second sealing lifting assembly are in transmission connection with the driving mechanism.
During the specific use, through a sealed lifting unit of actuating mechanism drive and the sealed lifting unit of second more energy-conserving when in actual use to compact structure, the integrated level is high.
As a further scheme of the invention, the first sealing lifting assembly and the second sealing lifting assembly both comprise a sealing rod and a support, the bottom of the sealing rod is provided with a cavity, a vent hole is formed in the outer side of the sealing rod, the support is fixedly connected to one end, away from the shell, of the sealing rod, the support is distributed oppositely, two mutually matched cams are arranged on the inner side of the support, the two mutually matched cams are in transmission connection through a driving mechanism, the sealing rod is arranged at one end, away from the shell, of the first air inlet probe and the second air inlet probe and is in sliding connection with the first air inlet probe and the second air inlet probe, and a first spring is arranged on the outer side of the sealing rod.
When the air outlet mechanism drives the sealing rod at the position of the second probe to move downwards, the second sliding plate can be opened, the air outlet mechanism can drive the bracket to move downwards through the cam at the bottom of the shell, the air outlet probe can move downwards through the cam at the bottom of the shell, and the air inlet probe and the air outlet probe can move upwards through a plurality of air inlet probes in sequence.
As a further scheme of the invention, the sliding plate comprises a first sliding plate, a second sliding plate and a third sliding plate which are sequentially arranged, and a baffle ring is arranged on one side opposite to the sliding plates and penetrates through the sliding plates and is fixedly connected with the sliding plates.
During specific use, when actuating mechanism drives first slide, when second slide and third slide move to extreme position left simultaneously, the left wind chamber grow of first slide, under the effect of outside atmospheric pressure, the air flows inside to the shell, first slide at the in-process of returning journey at this moment is at first the left motion, and second slide and third slide keep the original position motionless, when needs detect two or more than two, can drive second slide and third slide and move left, and then store the inspiratory air in the wind chamber that first slide, second slide and shell inner wall are constituteed, inside the wind chamber that third slide and shell inner wall are constituteed, thereby accomplish the detection to many places air.
As a further aspect of the present invention, the driving mechanism includes a screw rod disposed inside the housing, the screw rod sequentially penetrates through the first sliding plate, the second sliding plate and the third sliding plate and is in threaded connection with the retaining rings on the first sliding plate, the second sliding plate and the third sliding plate, one end of the screw rod penetrates through the housing and is provided with a first bevel gear at one end thereof, one side of the housing is provided with a motor, an output end of the motor is provided with a transmission shaft, a second bevel gear engaged with the first bevel gear is disposed at a top of the transmission shaft, a third bevel gear is disposed at a top of the second bevel gear in a manner of being matched with the first bevel gear, a transverse shaft is disposed at one side of the third bevel gear, a gear reducer is disposed at one end of the transverse shaft away from the third bevel gear, a connecting rod extends from one side of the gear reducer, one end of the connecting rod is provided with a pressing plate, the connecting rod penetrates through the pressing plate and is in threaded connection with the pressing plate, a U-shaped extrusion plate is disposed at one side of the housing, the U-shaped extrusion plate penetrates through the housing and is in sliding connection with the housing, one side of the U-shaped extrusion plate extending to the housing and is in contact with the third sliding connection with the third sliding plate, and a second spring is disposed between the pressing plate and the pressing plate.
When the structure is used, when the screw rod reversely rotates to drive the first sliding plate to move leftwards to the leftmost side, the connecting rod just drives the U-shaped extrusion plate to extrude to drive the second sliding plate to mesh with the screw rod by extruding the third sliding plate, and then the structure can drive the first sliding plate, the second sliding plate and the third sliding plate to move leftwards sequentially.
As a further scheme of the invention, a spring seat is arranged at the left end of the screw rod, and a limiting spring is arranged in the spring seat.
During specific use, can extrude the slide through spacing spring to make the third slide and the lead screw of rightmost side mesh mutually, be favorable to driving the slide and reset.
As a further scheme of the invention, a rotating shaft is arranged at the top of the shell, a first belt wheel is fixedly connected to the outer sides of the rotating shaft and the connecting rod, a first belt is sleeved on the outer side of the first belt wheel, a first through groove is arranged on the outer side of the bracket intersected with the rotating shaft, the rotating shaft penetrates through the first through groove, the rotating shaft penetrates through the cam and is fixedly connected with the cam, a long shaft is arranged at the bottom end of the shell, a second through groove is arranged on the outer sides of the two brackets intersected with the long shaft, the long shaft penetrates through the second through groove and is fixedly connected with the cam, a second belt wheel is arranged between the long shaft and the connecting rod, and a second belt is arranged on the outer side of the second belt wheel.
When the rotary shaft and the long shaft are used specifically, the interference between the rotary shaft and the support and the interference between the long shaft and the support can be avoided by arranging the first through groove and the second through groove.
The calibration method of the radon measuring instrument is used, air is filled into the shell through the calibration port on the front side of the shell, then the air is discharged through the calibration port on the rear side of the shell, when all parameters of the air detection meter are observed to be external normal air parameters after a period of time, the air filling is stopped, and the equipment is started to detect the air.
The working principle is as follows: the transmission shaft is driven to rotate through the output end of the motor, the screw rod can be driven to rotate through the meshing of the first bevel gear and the second bevel gear, the first sliding plate, the second sliding plate and the third sliding plate can be driven to move to the rightmost side through the rotation of the screw rod, meanwhile, the cross shaft can be driven to rotate through the meshing of the first bevel gear and the third bevel gear, the cross shaft can drive the connecting rod to rotate through the gear reducer, the pressing plate can be further driven to move towards the left side, the U-shaped extrusion plate can be extruded through the spring, the U-shaped extrusion plate can extrude the third sliding plate, through the structure, when the screw rod rotates reversely to drive the first sliding plate to move towards the leftmost side, the connecting rod just drives the U-shaped extrusion plate to extrude to drive the second sliding plate to mesh with the screw teeth on the screw rod through extruding the third sliding plate, and then the second sliding plate can be driven to move towards the left successively, the structure can drive the first sliding plate, the second sliding plate and the third sliding plate to move to the left side in sequence, the driving mechanism drives the two mutually matched cams to rotate to extrude the U-shaped bracket, so as to drive the bracket to move upwards and drive the sealing rod to move upwards, so that the ventilation hole on one sealing rod is taken out of the interior of the second air inlet probe, so that the second air inlet probe is communicated with the outside air, at the moment, when the first sliding plate slides leftwards, the outside air can be sucked into the shell through the first air inlet probe, when the cams gradually remove the extrusion on the bracket, the bracket and the sealing rod at the bottom of the bracket can be driven to move downwards under the tensile force of the spring, at the moment, the sealing rod can seal the second air inlet probe again, when the driving mechanism continues to operate to drive the second sliding plate to move leftwards, the other cam can extrude the bracket at the outer side of the bracket, in a similar way, can drive the vent on the sealing rod and move to the outside of third air intake probe, and actuating mechanism also drives the support downstream through the cam of shell bottom this moment, and then make the sealing rod downstream of the probe department of giving vent to anger of second, can give vent to anger the probe with the second and open, the second slide moves left this moment, can give vent to anger the probe discharge through the second with the air in the wind chamber between first slide and the second slide, and new air can enter into the shell through the third air intake probe inside, can open second air intake probe and third air intake probe in proper order through above structure, the probe is given vent to anger to the second and the third is given vent to anger the probe, can detect the air of giving vent to anger in succession.
According to the radon measuring instrument and the calibration method thereof, the first sliding plate is only driven to move leftwards by the driving mechanism, at the moment, the sucked air is stored in the air cavity formed by the first sliding plate, the second sliding plate and the inner wall of the shell, the radon decays after a period of time, and then the radon is discharged from the first air outlet probe.
Drawings
The invention is further illustrated by the following examples in conjunction with the drawings.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic perspective view of the present invention;
FIG. 3 is a schematic view of a second seal lifting assembly of the present invention;
FIG. 4 is a schematic view of the slide and air chamber configuration of the present invention;
FIG. 5 is a left side view of the present invention;
FIG. 6 is a front view of the present invention;
FIG. 7 is a schematic view of a first air intake probe of the present invention;
FIG. 8 is a schematic view of a first seal lifting assembly of the present invention;
FIG. 9 is an enlarged view of the portion A of FIG. 1 in accordance with the present invention;
FIG. 10 is an enlarged view of the portion B of FIG. 4 according to the present invention.
In the figure: 1. a housing; 2. a slide plate; 201. a first slide plate; 202. a second slide plate; 203. a third slide plate; 3. a wind cavity; 4. an air inlet; 401. a first air inlet; 402. a second air inlet; 403. a third air inlet; 5. an air outlet; 501. a first air outlet; 502. a second air outlet; 503. a third air outlet; 6. a first air intake probe; 7. a first air outlet probe; 8. a second air intake probe; 9. a third air intake probe; 10. a second air outlet probe; 11. a third air outlet probe; 12. a baffle ring; 13. a first seal lifting assembly; 131. a sealing rod; 1311. a vent hole; 132. a support; 133. a cam; 134. a first spring; 14. a second seal lifting assembly; 15. a drive mechanism; 151. a screw rod; 152. a first bevel gear; 153. a drive shaft; 154. a second bevel gear; 155. a third bevel gear; 156. a horizontal axis; 157. a gear reducer; 158. a connecting rod; 159. pressing a plate; 1510. a U-shaped extrusion plate; 1511. a second spring; 16. a support frame; 17. a slide rail; 18. a slider; 19. a limiting spring; 20. a first belt; 21. a rotating shaft; 22. a long axis; 23. a second belt; 24. a base plate; 25. a fixed mount; 26. and a vent pipe.
Detailed Description
Embodiments of the present invention will be described below with reference to the drawings. In this process, the width of the lines or the size of the components in the drawings may be exaggerated for clarity and convenience of description.
In addition, the following terms are defined based on the functions of the present invention, and may be different depending on the intention of a user or an operator or a common practice. Therefore, these terms are defined based on the entire contents of the present specification.
As shown in fig. 1, 2, 3 and 7, a radon measuring instrument and a calibration method thereof, including the host computer body, the host computer body includes shell 1, the inside slide 2 that is provided with a plurality of slidability of shell 1, forms the changeable wind chamber 3 of volume in the left and right sides of slide 2, and the host computer body outside is provided with air intake 4 and air outlet 5 of mutually supporting, mainly is: the air conditioner comprises a first air inlet 401 and a first air outlet 501 which are arranged on one side of a shell 1 and matched with each other, wherein a first air inlet probe 6 is arranged at the first air inlet 401, a first air outlet probe 7 is arranged at the first air outlet 501, a first one-way valve is arranged at the first air inlet probe 6, so that external air can enter the shell 1 in a one-way mode, and a second one-way valve is arranged at the first air outlet probe 7, so that the air in the shell 1 can flow to the outside of the shell 1 in a one-way mode; a second air inlet 402 and a third air inlet 403 which are arranged on one side of the top of the housing 1 far away from the first air inlet 401, wherein a second air inlet probe 8 is arranged at the second air inlet 402, and a third air inlet probe 9 is arranged at the third air inlet 403; a second air outlet 502 and a third air outlet 503 which are arranged at the bottom of the housing 1 and close to one side of the first air inlet 401, a second air outlet probe 10 is arranged at the second air outlet 502, and a third air outlet probe 11 is arranged at the third air outlet 503.
In practical use, because the sliding plate 2 and the housing 1 form the sealed air cavity 3, when the sliding plate 2 moves towards the right side in the housing 1, the space on the left side of the sliding plate 2 increases, and the pressure decreases correspondingly, at this time, air can be forced to enter the housing 1 through the first air inlet probe 6 at the first air inlet 401 under the action of the external atmospheric pressure, and when the sliding plate 2 moves towards the left, the air cavity 3 on the left side of the sliding plate 2 in the housing 1 can be squeezed, so that the air in the air cavity 3 flows out through the first air outlet probe 7 at the first air outlet 501.
Further, the sliding plate 2 comprises a first sliding plate 201, a second sliding plate 202 and a third sliding plate 203 which are arranged from left to right in sequence, and a baffle ring 12 is arranged on each of the opposite sides of the sliding plate 2, and the baffle ring 12 penetrates through the sliding plate 2 and is fixedly connected with the sliding plate 2;
furthermore, a first sealing lifting assembly 13 for sequentially sealing the second air inlet probe 8 and the third air inlet probe 9 is arranged at the bottom ends of the second air inlet probe 8 and the third air inlet probe 9, and a second sealing lifting assembly 14 for sequentially sealing the second air outlet probe 10 and the third air outlet probe 11 is arranged at the bottom ends of the second air outlet probe 10 and the third air outlet probe 11;
still further, a driving mechanism 15 for driving the sliding plate 2 to move inside the housing 1 is arranged inside the housing 1, and the driving mechanism 15 can drive the first sliding plate 201, the second sliding plate 202 and the third sliding plate 203 to move to the right side at the same time, and can sequentially drive the first sliding plate 201, the second sliding plate 202 and the third sliding plate 203 to move to the left side during the return process.
When the air conditioner is used, when the driving mechanism 15 drives the first sliding plate 201, the second sliding plate 202 and the third sliding plate 203 to move rightwards to the limit position at the same time, the air cavity 3 on the left side of the first sliding plate 201 becomes large, air flows into the shell 1 under the action of external air pressure, at this time, the first sliding plate 201 moves leftwards at first in the process of return, the second sliding plate 202 and the third sliding plate 203 are kept still at the original position, and at this time, the first sealing lifting assembly 13 can open the second air inlet probe 8 at the second air inlet, therefore, when the first sliding plate 201 moves leftwards, air in the air cavity 3 on the left side of the first sliding plate 201 can be discharged through the first air outlet probe 7 at the first air outlet, the air cavity 3 on the right side of the first sliding plate 201 is enlarged, at this time, external air enters the shell 1 through the second air inlet probe 8 at the second air inlet under the action of external pressure, when the first sliding plate 201 moves to the left to the limit position, the second sliding plate 202 starts to move to the left, at which time the first sealing and lifting assembly 13 opens the third air inlet probe 9 at the third air inlet, and the second air outlet probe 10 at the second air outlet is opened through the second sealing and lifting assembly 14, at which time, when moving to the left, the air cavity 3 at the left side of the second sliding plate 202 is reduced, the air at the left side of the second sliding plate 202 can be squeezed and discharged through the opened second air outlet probe 10, and the air cavity 3 at the right side of the second sliding plate 202 is increased, the external air can be forced into the interior of the housing 1 through the opened third air inlet probe 9 and placed between the second sliding plate 202 and the third sliding plate 203, when moving to the left side of the second sliding plate 202 to the limit position, the third sliding plate 203 starts to move to the left, at which time the third air outlet probe 11 at the third air outlet is opened through the second sealing and lifting assembly 14, therefore, when the third sliding plate 203 moves leftwards, the air in the left air cavity 3 can be exhausted through the opened third air outlet probe 11, the structure is mutually matched with the first air outlet probe 7 through the first air inlet probe 6, the first sliding plate 201, the second sliding plate 202 and the inner wall of the shell 1 form an air cavity 3, so that the air entering from the first air inlet probe 6 is exhausted from the first air outlet probe 7, similarly, the second sliding plate 202, the third sliding plate 203 and the inner wall of the shell 1 form an air cavity 3, so that the air entering from the second air inlet probe 8 is exhausted from the second air outlet probe 10, the third air inlet probe 9 and the third air outlet probe 11 are also in a similar air inlet and exhaust mode, when only one or one direction of air needs to be detected during actual use, the first sliding plate is driven to move leftwards by the driving mechanism 15 when only one or one direction of air needs to be detected, at the time when the air entering the air cavity 3 formed by the first sliding plate 201, the second sliding plate 202 and the inner wall of the shell 1 needs to be exhausted, the air flows through the first air inlet probe 1, the second air outlet probe 3 and the second air inlet probe 3, the second air outlet probe 1 and the air filtering probe 3 are arranged in the shell 1, when the air inlet probe 1, the air inlet probe 1 and the air filtering probe 3, the air inlet probe 1, the air filtering probe 3, when the air inlet probe 1 and the air inlet probe 2 and the air filtering probe 2 are both need to be detected, when the air inlet and the air outlet probe 20, the air inlet and the second air inlet probe 20 and the second air inlet probe 3, when the air filtering probe 3 are arranged in the second air inlet and the air filtering probe 20, thus completing the detection of air at multiple places.
As shown in fig. 4-6, each of the first seal lifting assembly 13 and the second seal lifting assembly 14 includes a seal rod 131 and a bracket 132, the bottom of the seal rod 131 is provided as a cavity and a vent hole 1311 is provided on the outer side of the seal rod 131, the bracket 132 is fixedly connected to one end of the seal rod 131 away from the housing 1, the bracket 132 is distributed oppositely and is provided with two mutually cooperating cams 133 on the inner side of the bracket 132, the two mutually cooperating cams 133 are driven by a driving mechanism 15 to operate, the second air intake probe 8 and the third air intake probe 9 can be opened in sequence through cooperation of the two cams 133, the seal rod 131 is provided on one end of the first air intake probe 6 and the second air intake probe 8 away from the housing 1 and is slidably connected with the first air intake probe 6 and the second air intake probe 8, normally, the vent hole 1 on the outer side of the seal rod 131 is disposed inside the first air intake probe 6 and the second air intake probe 8, a support seat is provided on the outer side of the seal rod 131, the support seat is fixedly connected to the top of the housing 1, and the seal rod 131 is disposed between the first spring 131134 and the support seat 132;
further, the bracket 132 is provided in a U-shape.
When the air conditioner is used, the two mutually matched cams 133 are driven to rotate by the driving mechanism 15, the cams 133 rotate to extrude the U-shaped bracket 132, so that the bracket 132 is driven to move upwards, the bracket 132 can drive the sealing rods 131 to move upwards, so that the vent holes 1311 in one sealing rod 131 are taken out of the interior of the second air inlet probe 8, so that the second air inlet probe 8 is communicated with external air, at the moment, when the first sliding plate 201 slides leftwards, the external air can be sucked into the interior of the shell 1 through the first air inlet probe 6, when the cams 133 gradually remove the extrusion on the bracket 132, the bracket 132 and the sealing rods 131 at the bottom of the bracket can be driven to move downwards under the tensile force of the first springs 134, at the moment, the sealing rods 131 can seal the second air inlet probe 8 again, when the driving mechanism 15 continues to operate and drive the second sliding plate 202 to move leftwards, the other cams 133 can extrude the bracket 132 at the outer side of the bracket 132, and simultaneously, the vent holes in the sealing rods 131 can be driven to move to the outer side of the third air inlet probe 9 through the second air inlet probe 202, and the second air outlet probe can be driven to move downwards through the shell 1 and the third air inlet probe 202, and the air outlet probe 202, and the air inlet probe 10 can be opened sequentially through the third air inlet probe 20, and the third air outlet probe 20, and the third air inlet probe can be beneficial to move downwards through the third air inlet probe 20, and the third air inlet probe 20 and the third air inlet probe inlet and the third air outlet probe 20.
As shown in fig. 4 to 10, the driving mechanism 15 includes a screw rod 151 disposed inside the housing 1, the screw rod 151 sequentially penetrates through the first sliding plate 201, the second sliding plate 202 and the third sliding plate 203, and is in threaded connection with the retainer ring 12 on the first sliding plate 201, the second sliding plate 202 and the third sliding plate 203, one end of the screw rod 151 penetrates through the housing 1 and is provided with a first bevel gear 152 at one end thereof, one side of the housing 1 is provided with a motor, an output end of the motor is provided with a transmission shaft 153, a second bevel gear 154 engaged with the first bevel gear 152 is disposed on a top of the transmission shaft 153, a third bevel gear 155 is disposed on a top of the second bevel gear 154 in cooperation with the first bevel gear 152, a lateral shaft 156 is disposed on one side of the third bevel gear 155, a gear reducer 157 is disposed on one end of the lateral shaft 156 away from the third bevel gear 155, a connecting rod 158 extends from one side of the gear reducer 157, a pressing plate 159 is disposed on one end of the connecting rod 158, the connecting rod 158 penetrates through the pressing 159 and is in threaded connection with the pressing plate 159, a U-shaped pressing plate 1510 is disposed on one side of the housing 1 and is slidably connected with a U-shaped pressing plate 1510, a U-shaped pressing plate 1510 is disposed between the connecting plate 1510, and a U-shaped pressing plate 1510 is disposed on one side of the connecting plate 203, and a U-shaped pressing plate 1510.
Furthermore, support frames 16 are arranged on two sides of the pressing plate 159, a slide rail 17 is arranged on one side opposite to the support frame 16, sliders 18 matched with the slide rail 17 are arranged on two sides of the pressing plate 159, and the sliders 18 are slidably connected inside the slide rail 17.
When the structure is used, the output end of the motor drives the transmission shaft 153 to rotate, the first bevel gear 152 is meshed with the second bevel gear 154 to drive the screw rod 151 to rotate, the screw rod 151 rotates to drive the sliding plate 2 to slide in the shell 1, the first sliding plate 201, the second sliding plate 202 and the third sliding plate 203 can be driven to move to the rightmost side through the screw rod 151, meanwhile, the meshing of the first bevel gear 152 and the third bevel gear 155 can drive the cross shaft 156 to rotate, the cross shaft 156 can drive the connecting rod 158 to rotate through the gear reducer 157, the connecting rod 158 is in threaded connection with the pressing plate 159, the connecting rod 158 rotates through the matching of the sliding block 18 and the sliding rail 17 to drive the pressing plate 159 to move to the left side, the U-shaped pressing plate 1510 is pressed through the spring, the U-shaped pressing plate 1510 can press the third sliding plate 203, through the structure, when the first sliding plate 201 is driven to move to the leftmost side through the reverse rotation of the screw rod 151, the connecting rod 158 drives the U-shaped pressing plate 1510 to squeeze the third sliding plate 202 to drive the second sliding plate 202 to mesh with the screw rod 151, and then drive the second sliding plate 202 to move to the left side sequentially, and the second sliding plate 202 and the third sliding plate 202 to move to the left side sequentially facilitate the second sliding plate 202 and the second sliding plate 202 to move to the third sliding plate 202.
Further, be provided with the spring holder at the left end of lead screw 151, the inside spacing spring 19 that is provided with of spring holder, when all backplate movements to the leftmost side, can extrude slide 2 through spacing spring 19 to make the third slide 203 on rightmost side mesh with lead screw 151 mutually, be favorable to driving slide 2 and reset.
Furthermore, a rotating shaft 21 is arranged at the top of the housing 1, a first belt wheel is fixedly connected to the outer sides of the rotating shaft 21 and the connecting rod 158, a first belt 20 is sleeved on the outer side of the first belt wheel, a first through groove is arranged on the outer side of the bracket 132 intersecting with the rotating shaft 21, the rotating shaft 21 penetrates through the first through groove, and the rotating shaft 21 penetrates through the cam 133 and is fixedly connected with the cam 133.
Furthermore, a long shaft 22 is disposed at the bottom end of the housing 1, second through grooves are disposed at the outer sides of the two brackets 132 intersecting with the long shaft 22, the long shaft 22 passes through the second through grooves and is fixedly connected with the cam 133, a second belt pulley is disposed between the long shaft 22 and the connecting rod 158, and a second belt 23 is disposed at the outer side of the second belt pulley.
During the use, make connecting rod 158 can drive pivot 21 rotation through first belt 20, and then drive the cam 133 rotation at shell 1 top, can drive sealing rod 131 lateral motion through cam 133, and then make outside air enter into inside the shell 1, and in the same way, the motion through major axis 22 can pull out sealing rod 131 of shell 1 bottom lateral, and then makes the inside air escape of shell 1.
As shown in fig. 5-6, for installation, a bottom plate 24 is disposed at the bottom of the housing 1, support legs are fixedly connected between the bottom plate 24 and the housing 1, a fixing frame 25 is disposed outside the supporting frame 16, a connecting rod 158 penetrates through the fixing frame 25 and is rotatably connected with the fixing frame 25, calibration ports are disposed at the front and rear sides of the housing 1, ventilation pipes 26 are disposed at the calibration ports, an air detection meter is disposed at the top of the housing 1, a guide rod is disposed at one side of the housing 1, and the guide rod penetrates through the U-shaped extrusion plate 1510 and is slidably connected with the U-shaped extrusion plate 1510.
The working principle is as follows: the transmission shaft 153 is driven to rotate through the output end of the motor, the screw rod 151 can be driven to rotate through the meshing of the first bevel gear 152 and the second bevel gear 154, the first sliding plate 201, the second sliding plate 202 and the third sliding plate 203 can be driven to move to the rightmost side through the rotation of the screw rod 151, meanwhile, the cross shaft 156 can be driven to rotate through the meshing of the first bevel gear 152 and the third bevel gear 155, the cross shaft 156 can drive the connecting rod 158 to rotate through the gear reducer 157, the pressing plate 159 can be driven to move to the left side, the U-shaped pressing plate 1510 can be pressed through the spring, the U-shaped pressing plate 1510 can press the third sliding plate 203, through the structure, when the screw rod 151 rotates reversely to drive the first sliding plate 201 to move to the leftmost side, the connecting rod 158 just drives the U-shaped pressing plate 1510 to extrude to drive the second sliding plate 202 to mesh with the screw teeth on the screw rod 151 through pressing the third sliding plate 203, and then can drive the second sliding plate 202 to move leftwards successively, this structure can drive the first sliding plate 201, the second sliding plate 202 and the third sliding plate 203 to move leftwards in turn, drive two mutually matched cams 133 to rotate and extrude the U-shaped bracket 132 through the driving mechanism 15, thereby driving the bracket 132 to move upwards, and can drive the sealing rod 131 to move upwards, thereby taking the vent hole 1311 on one sealing rod 131 out of the interior of the second air inlet probe 8, so that the second air inlet probe 8 is communicated with the outside air, at this time, when the first sliding plate 201 slides leftwards, the outside air can be sucked into the interior of the housing 1 through the first air inlet probe 6, when the cams 133 gradually withdraw the extrusion to the bracket 132, the bracket 132 and the sealing rod 131 at the bottom thereof can be driven to move downwards under the pulling force of the spring, at this time, the sealing rod 131 can seal the second air inlet probe 8 again, when the driving mechanism 15 continues to operate to drive the second sliding plate 202 to move leftward, another cam 133 extrudes the bracket 132 outside the second sliding plate, and in a similar manner, the vent on the sealing rod 131 can be driven to move to the outside of the third air inlet probe 9, and at this time, the driving mechanism 15 also drives the bracket 132 to move downward through the cam 133 at the bottom of the housing 1, so that the sealing rod 131 at the second air outlet probe 10 moves downward, the second air outlet probe 10 can be opened, at this time, the second sliding plate 202 moves leftward, air in the air cavity 3 between the first sliding plate 201 and the second sliding plate 202 can be discharged through the second air outlet probe 10, new air can enter the housing 1 through the third air inlet probe 9, the second air inlet probe 8 and the third air inlet probe 9 can be opened in sequence through the above structures, and the second air outlet probe 10 and the third air outlet probe 11 can continuously detect the excess air.
Claims (8)
1. The utility model provides a radon measuring instrument, includes the host computer body, and the host computer body outside sets up to the shell, its characterized in that: a plurality of sliding plates capable of sliding in sequence are arranged in the shell, and the left side and the right side of each sliding plate form an air cavity with variable volume; a driving mechanism for driving the sliding plates to slide is arranged in the shell, the driving mechanism rotates forwards to drive the sliding plates to move to one side simultaneously, the driving mechanism rotates backwards to drive the single sliding plate to slide to the other side in sequence, a plurality of air inlets and air outlets which are matched with each other are arranged on the outer side of the shell, and the sliding plates slide in sequence to drive external air to enter an air cavity in the shell through the air inlets;
the sliding plate comprises a first sliding plate, a second sliding plate and a third sliding plate which are sequentially arranged, and a baffle ring is arranged on one side opposite to the sliding plates and penetrates through the sliding plates and is fixedly connected with the sliding plates;
the driving mechanism comprises a screw rod arranged inside a shell, the screw rod sequentially penetrates through a first sliding plate, a second sliding plate and a third sliding plate and is in threaded connection with baffle rings on the first sliding plate, the second sliding plate and the third sliding plate, one end of the screw rod penetrates through the shell, a first bevel gear is arranged at one end of the screw rod, a motor is arranged on one side of the shell, a transmission shaft is arranged at the output end of the motor, a second bevel gear meshed with the first bevel gear is arranged at the top of the transmission shaft, a third bevel gear is arranged at the top of the second bevel gear in a matched mode with the first bevel gear, a cross shaft is arranged on one side of the third bevel gear, a gear reducer is arranged at one end, away from the third bevel gear, a connecting rod extends out of one side of the gear reducer, a pressing plate is arranged at one end of the connecting rod, the connecting rod penetrates through the pressing plate and is in threaded connection with the pressing plate, a U-shaped extrusion plate is arranged on one side of the shell, the U-shaped extrusion plate penetrates through the shell and is in sliding connection with the shell, one side of the U-shaped extrusion plate, the U-shaped extrusion plate extends to the shell, the side of the connecting plate and is in contact with the third sliding plate, the connecting rod, the connecting plate, the connecting rod penetrates through the U-shaped extrusion plate, and is in sliding connection with the U-shaped extrusion plate, and is arranged between the U-shaped extrusion plate, and a second spring is arranged between the second spring.
2. The radon measuring instrument as set forth in claim 1, wherein: the air inlet and the air outlet comprise a first air inlet and a first air outlet which are arranged on one side of the shell and matched with each other, a first air inlet probe is arranged at the first air inlet, and a first air outlet probe is arranged at the first air outlet; the second air inlet and the third air inlet are arranged on one side, far away from the first air inlet, of the top of the shell, a second air inlet probe is arranged at the second air inlet, and a third air inlet probe is arranged at the third air inlet; and the second air outlet and the third air outlet are arranged at one side of the bottom of the shell, which is close to the first air inlet, the second air outlet is provided with a second air outlet probe, and the third air outlet is provided with a third air outlet probe.
3. The radon measuring instrument according to claim 2, wherein: the first air inlet probe is provided with a first one-way valve for allowing external air to enter the shell in a one-way mode, and the first air outlet probe is provided with a second one-way valve for allowing air in the shell to flow outside the shell in a one-way mode.
4. The radon measuring instrument in accordance with claim 2, wherein: the bottom of second air intake probe and third air intake probe is provided with the first sealed lifting unit who seals second air intake probe and third air intake probe in proper order, the bottom of the second air outlet probe and third air outlet probe is provided with the sealed lifting unit of second that seals the second air outlet probe and third air outlet probe in proper order, first sealed lifting unit and the sealed lifting unit of second all are connected with the actuating mechanism transmission.
5. The emanometer of claim 4, wherein: first sealed lifting unit and the sealed lifting unit of second all include sealing rod and support, and the sealing rod bottom sets up to the cavity and is provided with the ventilation hole in the outside of sealing rod, and support fixed connection keeps away from the one end of shell at the sealing rod, and support relative distribution is and be provided with two cams that mutually support in the support inboard, and two cams that mutually support are connected by the actuating mechanism transmission, and sealing rod sets up in the one end that the shell was kept away from to first air intake probe and second air intake probe and with first air intake probe and second air intake probe sliding connection, the sealing rod outside is provided with first spring.
6. The radon measuring instrument in accordance with claim 1, wherein: the left end of the screw rod is provided with a spring seat, and a limiting spring is arranged inside the spring seat.
7. The emanometer of claim 6, wherein: the utility model discloses a cam, including shell, pivot and connecting rod, the shell top is provided with the pivot, at the first band pulley of the equal fixedly connected with in the outside of pivot and connecting rod, and the outside cover of first band pulley is equipped with first belt, and wherein be provided with first logical groove with the crossing support outside of pivot, the pivot passes first logical groove, the pivot run through the cam and with cam fixed connection, the shell bottom is provided with the major axis, all is provided with the second with two support outsides that the major axis intersects and leads to the groove, the major axis pass the second lead to the groove and with cam fixed connection, be provided with the second band pulley between major axis and connecting rod, be provided with the second belt in the second band pulley outside.
8. A calibration method using the emanometer according to any of claims 1 to 7, wherein: the air is filled into the shell through the calibration port on the front side of the shell, then the air is discharged through the calibration port on the rear side of the shell, when all parameters of the air detection meter observed after a period of time are external normal air parameters, the air filling is stopped, and the starting equipment detects the air.
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| CN202110654733.7A CN113219521B (en) | 2021-06-11 | 2021-06-11 | Radon detector and calibration method thereof |
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