CN111982609A - Gas sampling equipment for FID and PID double-detector gas chromatograph - Google Patents
Gas sampling equipment for FID and PID double-detector gas chromatograph Download PDFInfo
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- CN111982609A CN111982609A CN202010803171.3A CN202010803171A CN111982609A CN 111982609 A CN111982609 A CN 111982609A CN 202010803171 A CN202010803171 A CN 202010803171A CN 111982609 A CN111982609 A CN 111982609A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
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Abstract
The invention discloses gas sampling equipment for a gas chromatograph with dual detectors of FID and PID, which comprises a fixed seat, an air pump arranged on the fixed seat, an air delivery pipe arranged on the fixed seat, a driving device arranged on one side of the fixed seat, a first fixing device arranged on the fixed seat and a second fixing device arranged on the fixed seat, wherein the air pump is arranged on the fixed seat; the first fixing device comprises a plurality of first fixing components arranged on the fixing seat; the first fixing assembly comprises a fixing hole formed in the fixing seat, a first driving piece arranged on the fixing hole, a first telescopic rod arranged on the first driving piece, and a fixing rod arranged on the first telescopic rod. The invention reduces the occupied area of the equipment when in use, and can conveniently sample the air with different heights.
Description
Technical Field
The invention belongs to the field of gas sampling equipment, and particularly relates to gas sampling equipment which can be used for a gas chromatograph with FID (fast infrared detection) and PID (proportion integration differentiation) dual detectors.
Background
In the gas sampling equipment that current is connected with FID, PID detector gas chromatograph, generally place sampling box or sampling equipment subaerial, it is great to the area of gas sampling department, when sampling the gas of higher department simultaneously, need operate the position of exhaust tube pulling to higher department, increased staff's the operation degree of difficulty.
Disclosure of Invention
The invention provides a gas sampling device which can be used for an FID (fast infrared detector) and PID (proportion integration differentiation) dual-detector gas chromatograph, aims to overcome the defects of the prior art, reduces the occupied area when the device is used, and conveniently samples higher air.
In order to achieve the purpose, the invention adopts the following technical scheme: a gas sampling device for a gas chromatograph with FID and PID dual detectors comprises a fixed seat, an air pump arranged on the fixed seat, a gas pipe arranged on the fixed seat, a driving device arranged on one side of the fixed seat, a first fixing device arranged on the fixed seat and a second fixing device arranged on the fixed seat; the first fixing device comprises a plurality of first fixing components arranged on the fixing seat; the first fixing assembly comprises a fixing hole formed in the fixing seat, a first driving piece arranged on the fixing hole, a first telescopic rod arranged on the first driving piece and a fixing rod arranged on the first telescopic rod; the air pump with the gas-supply pipe is the cooperation setting, a plurality of first fixed subassembly structures are the same and are the symmetry setting, dead lever one end is the toper structure.
According to the invention, through the arrangement of the fixed rod, when the equipment needs to be installed on a wall body for a long time, firstly, the electric drill is used for punching the position, needing to be fixed on the wall body, of the fixed rod, then, the second fixing device is pressed on the surface of the wall body, and the first driving piece is started to drive the first telescopic rod to extend, thereby driving the fixed rod to move, leading the conical structure at one end of the fixed rod to be close to the surface of the wall body, meanwhile, the first driving piece is matched to drive the fixed rod to move towards the wall body, so that one end of the fixed rod is drilled into the wall body, and the fixed seat and the equipment are fixed by the plurality of fixed rods after the plurality of fixed rods are drilled into the wall body, the floor area of the equipment is reduced by fixing the equipment on the wall, and the equipment is convenient to install at a high position to sample air at a higher position; through the setting of aspiration pump and gas-supply pipe, when equipment fixing accomplished and need bleed the air and sample, start the aspiration pump with the gas suction in the region to the aspiration pump, transport the gas of suction to detection device in through the gas-supply pipe afterwards, accomplish the operating procedure to gas sampling.
The driving device comprises a first gear ring arranged on the fixed seat, a second gear ring arranged on the fixed seat, a plurality of gears used for connecting the first gear ring and the second gear ring, a plurality of through grooves respectively arranged on the plurality of gears, and a plurality of protection components respectively arranged on the plurality of gears; the protection assembly comprises a telescopic sleeve arranged on the gear and a plurality of rotating baffles arranged on the telescopic sleeve; the first gear ring can rotate relative to the fixed seat, the second gear ring can rotate relative to the fixed seat, the first gear ring and the gear are arranged in a matched mode, the second gear ring and the gear are arranged in a matched mode, the through grooves and the fixing rods are arranged correspondingly, the rotating baffle can rotate relative to the telescopic sleeve, the fixing rods and the rotating baffle are arranged in a matched mode, a torsional spring is arranged in the rotating baffle, one end of the torsional spring is connected to the rotating baffle, and the other end of the torsional spring is connected to the telescopic sleeve; through the arrangement of the rotating baffle, when the fixed rod is driven by the first telescopic rod to move towards the wall, one end of the fixed rod can contact with the plurality of rotating baffles, then the fixed rod can drive the telescopic sleeve to extend through the plurality of rotating baffles in the process of continuously moving the fixed rod, when one end of the fixed rod is close to the surface of the wall body and is driven by the first driving piece to continuously move towards the interior of the wall body, the fixed rod can drive the plurality of rotating baffles to turn outwards, and then when the fixed rod continues to move towards the interior of the wall body, the dust that the fixed rod was driled the hole to the wall body and was produced has most to be wrapped up in by rotating the baffle and flexible cover in inside, has avoided the fixed rod to carry out the drilling the wall body when the dust that produces a large amount of dispersions in the air and the follow-up condition that leads to is difficult to collect the clearance to the dust, has reduced the clearance degree of difficulty among the equipment fixing process.
The second fixing device comprises a connecting pipe arranged on the fixing seat, a sucker arranged on the connecting pipe, an air exhaust hole arranged on the fixing seat, a second telescopic rod arranged on the air exhaust hole, a piston rod arranged on the second telescopic rod, and a first elastic piece used for connecting the second telescopic rod and the fixing seat; the air exhaust hole and the connecting pipe are correspondingly arranged, one end of the piston rod penetrates through the air exhaust hole, the piston rod can move relative to the air exhaust hole, and the connecting pipe is arranged at the center of the second toothed ring; through the setting of piston rod, when needs are temporarily with equipment fixing on the wall body and need not for a long time fixed, press the sucking disc on the surface of wall body, press the second telescopic link simultaneously and drive the piston rod and remove along the aspirating hole, make the piston rod extrude the external world with some air in aspirating hole and the sucking disc, loosen the second telescopic link afterwards and make the piston rod reset under the drive of first elastic component, and then make the piston rod with remaining air suction to the aspirating hole in with the sucking disc, the adsorption affinity of sucking disc to wall body surface has been increased, the condition that the equipment that has avoided the sucking disc to lead to the adsorption affinity on wall body surface drops from the wall body in the use has increased the stability in the equipment use.
The second fixing device also comprises a fixing groove arranged on the sucker, a rotating groove arranged on the fixing seat, a rotating ring used for connecting the rotating groove and the second toothed ring, and a fixing ring arranged on the rotating ring; the fixed ring and the fixed groove are arranged in a matched mode, the rotating ring is in threaded connection with the rotating groove, and the rotating ring can move relative to the second gear ring; through the arrangement of the fixing ring, after the sucker is adsorbed on the surface of a wall body, the first toothed ring is rotated, the second toothed ring is driven to rotate through the plurality of gears, then when the second toothed ring rotates, the second toothed ring can drive the rotating ring to rotate, and meanwhile, the rotating ring is matched with the threaded connection between the rotating ring and the rotating groove, so that the rotating ring moves towards the direction of the sucker in the rotating process, further the rotating ring drives the fixing ring to move towards the direction of the sucker, finally the fixing ring is buckled into the fixing groove, the peripheral edge of the sucker is fixed through the fixing ring, the phenomenon that the edge of the sucker leaks due to the fact that the gravity borne by the sucker is too large is avoided, the stability when the sucker is fixed is improved, meanwhile, the edge of the sucker is compacted on the surface of the wall body through the fixing ring, and the fixing seat can be guided through the fixing ring, the condition that the fixing seat inclines downwards due to the fact that the fixing seat is influenced by gravity is avoided, and stability of the fixing seat is improved.
The second fixing device also comprises a rotating disc used for connecting the connecting pipe and the fixing seat, a plurality of ratchets arranged on the rotating disc, vent holes arranged on the rotating disc, a rotating pipe arranged on the vent holes and a moving ring used for connecting the rotating pipe and the connecting pipe; the rotating disc can rotate relative to the fixed seat, the rotating disc can rotate relative to the connecting pipe, the ratchet teeth and the rotating ring are arranged in a matched mode, the rotating pipe and the moving ring are movably connected, and the moving ring is in threaded connection with the connecting pipe; through the arrangement of the ratchets, when the first gear ring drives the second gear ring and the rotating ring to rotate and fix the edge of the sucker, the rotating disc cannot be driven by the rotating ring due to the characteristics of the ratchets, when the device needs to be disassembled after being used, the second gear ring synchronously generates reverse rotation by reversely rotating the first gear ring, the second gear ring can drive the ratchets through the rotating ring, so that the rotating disc drives the rotating pipe to rotate, when the rotating pipe is driven to rotate, the movable connection between the rotating pipe and the moving ring and the threaded connection between the moving ring and the connecting pipe are matched, so that the moving ring rotates and moves along the length direction of the connecting pipe under the driving of the threads, one end of the moving ring moves to the surface of the wall body, and reverse thrust is applied to the device through the wall body in the process of continuous movement, the fixing base and the sucker are prevented from being detached due to over-tight adsorption of the sucker, the situation that the sucker is difficult to detach is avoided, meanwhile, the sucker on the back of the equipment does not need to be detached by a worker, and the operation difficulty in the detaching process of the equipment is reduced.
The second fixing device also comprises a telescopic ring arranged on the moving ring, a second elastic piece arranged in the telescopic ring, and a plurality of third telescopic rods arranged on the telescopic ring; a plurality of inclined blocks are respectively arranged at one end of each of the plurality of third telescopic rods, the third telescopic rods are matched with the suckers, and the third telescopic rods are matched with the telescopic rings; through the setting of third telescopic link, move and the pivoted in-process when the shift ring along the length direction of connecting pipe, the one end of expansion ring can contact the surface of wall body, and at the in-process that the shift ring continued to move, compress the length of expansion ring, make the intra-annular gas of expansion ring crowded to the third telescopic link in, and then make a plurality of third telescopic links extend, make the inside edge of the slope piece contact sucking disc of third telescopic link one end after the extension afterwards, and promote the inside edge of sucking disc through a plurality of slope pieces, make the sucking disc prized from inside, the dismantlement process of sucking disc has been made things convenient for, the condition that the equipment that has avoided the sucking disc to adsorb tightly and lead to can't be dismantled has been avoided.
The driving device further comprises a plurality of limiting holes formed in the first toothed ring, a limiting block arranged on the fixed seat, a moving block arranged on the limiting block, a fourth telescopic rod used for connecting the limiting block and the moving block, a third elastic piece sleeved on the fourth telescopic rod and used for connecting the limiting block and the moving block, and a limiting rod arranged on the moving block; the limiting hole and the limiting rod are arranged in a matched mode, and the moving block can move relative to the fixed seat; through the setting of gag lever post, when needs rotate first ring gear, the pulling movable block makes the fourth telescopic link contract, and then make the gag lever post break away from the position in spacing hole, thereby make first ring gear rotate, after first ring gear rotates and accomplishes, loosen the movable block, make the movable block reset under the drive of fourth telescopic link and third elastic component, and then make the gag lever post insert in spacing hole, fix first ring gear through gag lever post and spacing hole simultaneously, the equipment that has avoided equipment to touch first ring gear because the mistake when using and the equipment that leads to appears fixed unstable condition, the stability in the equipment use has been increased.
The second fixing device further comprises a plurality of connecting components for connecting the suction cup and the connecting pipe; the connecting assembly comprises a connecting block arranged on the sucker, a groove arranged on the connecting block, a connecting rod arranged on the connecting pipe and a connecting wire used for connecting the connecting rod and the connecting pipe; the connecting components are identical in structure and symmetrically arranged, the connecting rods and the grooves are arranged in a matched mode, coil springs are arranged in the connecting pipes, and one ends of the connecting wires are arranged on the coil springs; through the setting of connecting rod, when needs are changed the sucking disc and are dismantled, the pulling connecting rod makes the connecting wire extension, and then make the connecting rod break away from the position of groove, and then make the connecting block can take off from the connecting pipe department, the dismantlement operation of sucking disc has been made things convenient for, simultaneously when needs installation sucking disc, the pulling connecting rod blocks the outer wall department of connecting pipe with the connecting block, loosen the connecting rod afterwards, make the connecting rod buckle into in the recess under the drive of connecting wire, and fix a plurality of connecting blocks through a plurality of connecting rods, make things convenient for the installation or the dismantlement operation of sucking disc.
In summary, the invention has the following advantages: the floor space of the device is reduced, and the air at a higher position is conveniently sampled.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a front view of the present invention.
3 FIG. 3 3 3 is 3 a 3 cross 3- 3 sectional 3 view 3 taken 3 along 3 line 3 A 3- 3 A 3 of 3 FIG. 3 2 3 in 3 accordance 3 with 3 the 3 present 3 invention 3. 3
Fig. 4 is a partial enlarged view of the invention at a in fig. 3.
Fig. 5 is a partial enlarged view of the invention at a in fig. 4.
Fig. 6 is a partial enlarged view of the invention at B in fig. 4.
Fig. 7 is a partial enlarged view of the invention at B in fig. 3.
Fig. 8 is a partial enlarged view of the invention at a in fig. 7.
Fig. 9 is a partial enlarged view of the invention at B in fig. 7.
Fig. 10 is a flow chart of the control method for synchronous operation of FID and PID dual detectors of the gas chromatograph according to the present invention.
FIG. 11 is a schematic view of the structure of the bladder of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.
A synchronous operation control method for FID and PID dual detectors of a gas chromatograph comprises the following steps:
a set double-detector synchronous operation control method is used for controlling a circuit control system, a first electromagnetic valve, a second electromagnetic valve and gas sampling equipment which are arranged on a gas path of a chromatograph;
the circuit control system controls the on-off of the first electromagnetic valve, the second electromagnetic valve and the gas sampling equipment according to the time parameters and the control parameters through a control time sequence which is compiled in advance;
the first electromagnetic valve is connected with the output end of the circuit control system, and the switching of the first electromagnetic valve is realized by using a switching value signal of the circuit control system, so that the switching of the high-pressure driving gas is controlled to realize the switching of the ten-way valve in the gas path;
the second electromagnetic valve is connected with the output end of the circuit control system, and the switching of the second electromagnetic valve is realized by using a switching value signal of the circuit control system, so that the switching of the high-pressure driving gas is controlled to realize the switching of the ten-way valve in the gas path;
the gas sampling device is connected with the output end of the circuit control system, the switching of the gas sampling device is realized by using a switching value signal of the circuit control system, and sampling operation is carried out in the sampling step;
when the instrument runs the analysis method, firstly controlling the FID to start entering a sampling time sequence, and opening the gas sampling equipment for sampling, wherein the time sequence lasts for 0.5 minute; after 0.5 minute, entering an FID balance state, closing the gas sampling equipment in the state, and balancing the air pressure in the sampling gas circuit, wherein the time sequence lasts for 0.1 minute; after 0.1 minute, entering an FID sample injection time sequence, wherein in the time sequence, the first electromagnetic valve is controlled to be opened, an FID quantitative ring is cut from the sampling branch to the sample injection branch, and the sample gas enters a detector for sample analysis;
when the appearance is advanced in the FID branch road chronogenesis, PID gets into the sampling chronogenesis, opens gaseous sampling equipment sampling once more, and FID and PID are in the chronogenesis of appearance and sampling respectively this moment, the sampling gas circuit that originally links together because the time difference's of control chronogenesis relation, mutual isolation comes, and the sampling of two detectors is not influenced by each other with advancing the appearance, has stopped the detection deviation problem that two detectors caused at the mutual interference of sampling process.
The operation steps eliminate the condition caused by mutual interference of two systems when a common double detector runs, and greatly improve the accuracy of instrument analysis and detection.
Meanwhile, in the above steps, the method further comprises:
1) FID Detector analysis cycle, i.e. the time it takes for FID to detect the concentration of a substance in a sample. A conventional FID detector analyzes the period of the detected substance, including but not limited to sampling, balancing, sampling, back flushing, etc. several time sequences, and the operation time of each time sequence needs to determine an optimal value according to the specific application, i.e. the time sequence of the current time sequence. Determining the time sequence quantity and time sequence time, namely determining an analysis period of the FID detector;
2) like the FID detector, the PID detector also has an independent analysis period. The PID analysis period is substantially the same as the FID analysis period, including but not limited to several time sequences such as sampling, balancing, sampling, and back flushing, and the operation time of each time sequence needs to be determined as an optimal value according to the specific application, i.e. as the time sequence time of the current time sequence. Determining the time sequence quantity and time sequence time, namely determining an analysis period of the PID detector;
3) after the PID independent analysis period is determined, according to the peak output condition of the PID, fine adjustment is carried out on the analysis period under the condition that all the peaks are ensured to be output by the PID. Properly increasing or reducing the time of the PID blowback time sequence to ensure that the time of one analysis period (comprising four time sequences of sampling, balancing, sample introduction and blowback) of the PID is integral multiple of the time used by one analysis period of the FID, and the increased or reduced time is most suitable to be not more than one analysis period of the FID;
4) when the two detectors are controlled to work simultaneously, the circular detection of the FID is started firstly, and then the circular detection of the PID detector is started when the FID carries out sample injection, so that the purpose of completely separating the sampling and balance time sequence of the FID from the sampling balance time sequence of the PID is achieved in the first operation period. And then, the set FID operation period and the set PID operation period are integral multiples, and the cycle operation method and the sampling and balancing time sequences of the two methods can be automatically separated, so that the problem of detection deviation caused by mutual interference of the two detectors in the sampling process is solved.
As shown in fig. 1-11, the gas sampling apparatus in the method for controlling the synchronous operation of the FID and PID dual detectors of the gas chromatograph includes a fixing base 1, an air pump 2 disposed on the fixing base, an air pipe 3 disposed on the fixing base, a driving device 4 disposed on one side of the fixing base, a first fixing device 5 disposed on the fixing base, and a second fixing device 6 disposed on the fixing base; the air suction pump is prior art, and is not described herein any more, and the air suction pump and the air delivery pipe are connected through an air pipe.
The first fixing device 5 comprises a plurality of first fixing components arranged on the fixing seat; the first fixing component comprises a fixing hole 51, a first driving piece 52, a first telescopic rod 53 and a fixing rod 55; a fixed hole 51 is formed in the fixed seat, a first driving piece 52 is formed in the fixed hole, a first telescopic rod 53 is formed in the first driving piece, and a fixed rod 55 is formed in the first telescopic rod; the first fixing assemblies are identical in structure and symmetrically arranged, and one end of each fixing rod is of a conical structure; the first driving piece is an air cylinder, and the first telescopic rod is an air rod driven by the air cylinder.
The driving device 4 comprises a first toothed ring 41, a second toothed ring 42, a plurality of gears 43, a plurality of through grooves 44, a plurality of protection components, a plurality of limiting holes 47, a limiting block 48, a moving block 49, a fourth telescopic rod 40, a third elastic part 401 and a limiting rod 402; the first gear ring 41 is arranged on the fixed seat 1, the second gear ring 42 is arranged on the fixed seat, the plurality of gears 43 are used for connecting the first gear ring and the second gear ring, the plurality of through grooves 44 are respectively arranged on the plurality of gears, and the plurality of protection components are respectively arranged on the plurality of gears; the protection assembly comprises a telescopic sleeve 45 and a plurality of rotary baffles 46; a telescopic sleeve 45 is arranged on the gear, and a plurality of rotating baffles 46 are arranged on the telescopic sleeve; the first gear ring can rotate relative to the fixed seat, the second gear ring can rotate relative to the fixed seat, the first gear ring is meshed with the gear, the second gear ring is meshed with the gear, the through grooves and the fixing rods are correspondingly arranged, the rotating baffle can rotate relative to the telescopic sleeve, the fixing rods can push the rotating baffle, a torsion spring is arranged in the rotating baffle, one end of the torsion spring is connected to the rotating baffle, and the other end of the torsion spring is connected to the telescopic sleeve; a plurality of limiting holes 47 are formed in the first toothed ring 41, a limiting block 48 is formed in the fixed base, a moving block 49 is formed in the limiting block, a fourth telescopic rod 40 is used for connecting the limiting block and the moving block, a third elastic piece 401 is sleeved on the fourth telescopic rod and used for connecting the limiting block and the moving block, and a limiting rod 402 is formed in the moving block; the limiting rod can penetrate into the limiting hole, the moving block can move relative to the fixed seat, and the third elastic piece is a spring.
The second fixing device 6 comprises a connecting pipe 61, a suction cup 62, a suction hole 63, a second telescopic rod 64, a piston rod 65, a first elastic piece 66, a fixing groove 67, a rotating groove 68, a rotating ring 69, a fixing ring 60, a rotating disc 601, a plurality of ratchets 602, a vent hole 603, a rotating pipe 604, a moving ring 605, a telescopic ring 606, a second elastic piece 607, a plurality of third telescopic rods 608, a plurality of inclined blocks 94 and a plurality of connecting components; the connecting pipe 61 is arranged on the fixed seat 1, the sucking disc 62 is arranged on the connecting pipe, the air suction hole 63 is arranged on the fixed seat, the second telescopic rod 64 is arranged on the air suction hole, the piston rod 65 is arranged on the second telescopic rod, and the first elastic piece 66 is used for connecting the second telescopic rod and the fixed seat; the air exhaust hole and the connecting pipe are correspondingly arranged, one end of the piston rod penetrates through the air exhaust hole, the piston rod can move relative to the air exhaust hole, the connecting pipe is arranged at the central position of the second toothed ring, and the first elastic piece is a spring; the fixed groove 67 is arranged on the sucking disc 62, the rotating groove 68 is arranged on the fixed seat, the rotating ring 69 is used for connecting the rotating groove and the second gear ring, and the fixed ring 60 is arranged on the rotating ring; the fixing ring can be buckled into the fixing groove, the rotating ring is in threaded connection with the rotating groove, and the rotating ring can move relative to the second gear ring; the rotating disc 601 is used for connecting the connecting pipe 61 and the fixed seat 1, the plurality of ratchets 602 are arranged on the rotating disc, the vent holes 603 are arranged on the rotating disc, the rotating pipe 604 is arranged on the vent holes, and the moving ring 605 is used for connecting the rotating pipe and the connecting pipe; the rotating disc can rotate relative to the fixed seat, the rotating disc can rotate relative to the connecting pipe, the ratchet teeth are meshed with one side of the rotating ring, the rotating pipe is movably connected with the moving ring, and the moving ring is in threaded connection with the connecting pipe; the telescopic ring 606 is arranged on the moving ring 605, the second elastic member 607 is arranged in the telescopic ring, and the plurality of third telescopic rods 608 are arranged on the telescopic ring; a plurality of inclined blocks 94 are respectively arranged at one end of each of the plurality of third telescopic rods, the third telescopic rods can push the inner edge of the sucking disc, the third telescopic rods are communicated with the telescopic rings, and the second elastic piece is a spring; a plurality of connecting members for connecting the suction cup 62 and the connecting tube 61, the connecting members including a connecting block 609, a groove 610, a connecting rod 611, a connecting wire 612; the connecting block 609 is arranged on the sucker, the groove 610 is arranged on the connecting block, the connecting rod 611 is arranged on the connecting pipe, and the connecting wire 612 is used for connecting the connecting rod and the connecting pipe; a plurality of coupling assembling structures are the same and are the symmetry setting, the connecting rod can be detained in the recess, be equipped with the wind spring in the connecting pipe, connecting wire one end is located on the wind spring, the connecting wire is the steel wire.
The second fixing device 6 further comprises a storage groove 91 arranged on the suction cup 62, two shielding plates 92 arranged on the storage groove, a feeding groove 93 arranged on the suction cup and having one end connected to the storage groove, an air bag 95 arranged at one end of the feeding groove, and a check valve 96 arranged at one end of the air bag; the gel can be added into the storage tank through a feeding tank; through the storage tank and the gel stored in the storage tank, when the fixing ring 60 is buckled into the fixing groove 67 to fix the sucker, the two baffle plates on one side of the storage tank can be squeezed open by the fixing ring, the gel in the storage tank can flow out from the position where the two baffle plates are opened, and then the gap position between the sucker and the wall body is sealed through the gel, so that the condition that the sucker cannot be adsorbed on the wall body due to the uneven surface of part of the wall body is avoided, the applicability of the equipment is increased, meanwhile, when the equipment needs to be taken down from the wall body, the inclined block 94 can rotate under the driving of the moving ring and approach to the gel at one side, the position of the gel can be pried after the inclined block approaches to the gel, and meanwhile, the inclined block can rotate to cut the gel by matching with the rotating process of the moving ring, the gel can be guaranteed to be separated from the wall body, and most of the gel can, meanwhile, the condition that the gel cannot be detached from the wall body to cause that the equipment cannot be detached is avoided; through the setting of gasbag, when needs retrieve into the holding tank with gel in, press the outside of gasbag for the gasbag shrink loosens the gasbag afterwards and makes the gasbag kick-back, and then makes in gasbag cooperation check valve makes gel suction to the holding tank, has made things convenient for reuse and subsequent use to gel.
The specific working principle is as follows: when the equipment needs to be temporarily installed on a wall body and does not need to be fixed for a long time, the suction cup 62 is pressed on the surface of the wall body, meanwhile, the second telescopic rod 64 is pressed to drive the piston rod 65 to move along the suction hole 63, so that the piston rod 65 extrudes the suction hole 63 and a part of air in the suction cup 62 to the outside, and then the second telescopic rod 64 is loosened to enable the piston rod 65 to reset under the driving of the first elastic piece 66, so that the piston rod 65 sucks the residual air in the suction cup 62 into the suction hole 63; after the suction cup 62 is adsorbed on the surface of the wall body, the first toothed ring 41 is rotated, the second toothed ring 42 is driven to rotate through the plurality of gears 43, and then when the second toothed ring 42 rotates, the second toothed ring 42 drives the rotating ring 69 to rotate, and meanwhile, the rotating ring 69 moves towards the suction cup 62 in the rotating process by matching with the threaded connection between the rotating ring 69 and the rotating groove 68, so that the rotating ring 69 drives the fixing ring 60 to move towards the suction cup 62, and finally the fixing ring 60 is buckled into the fixing groove 67, and the peripheral edges of the suction cup 62 are fixed through the fixing ring 60; when the first ring gear 41 drives the second ring gear 42 and the rotating ring 69 to rotate and fix the edge of the suction cup 62, the rotating disc 601 is not driven by the rotating ring 69 due to the characteristics of the ratchet 602, when the device is used and needs to be disassembled, the second ring gear 42 synchronously rotates in reverse direction by reversely rotating the first ring gear 41, at this time, the second ring gear 42 can drive the ratchet 602 through the rotating ring 69, and further the rotating disc 601 rotates, so that the rotating disc 601 drives the rotating pipe 604 to rotate, when the rotating pipe 604 is driven to rotate, the movable connection between the rotating pipe 604 and the moving ring 605 and the threaded connection between the moving ring 605 and the connecting pipe 61 are matched, so that the moving ring 69 moves and rotates along the length direction of the connecting pipe 61 under the driving of the threads, and further one end of the moving ring 605 moves to the surface of the wall body, in the process of continuously moving, reverse thrust is applied to the equipment through the wall body, and the fixed seat 1 and the suction disc 62 are helped to be detached; meanwhile, in the process that the moving ring 605 moves and rotates along the length direction of the connecting pipe 61, one end of the telescopic ring 606 contacts the surface of the wall, and in the process that the moving ring 605 continues to move, the length of the telescopic ring 606 is compressed, so that the gas in the telescopic ring 606 is squeezed into the third telescopic rods 608, and further the plurality of third telescopic rods 608 are extended, and then the inclined blocks 94 at one end of the extended third telescopic rods 608 contact the inner edge of the suction cup 62 and push the inner edge of the suction cup 62 through the plurality of inclined blocks 94, so that the suction cup 62 is pried from the inside; when needs are fixed this equipment on the wall body for a long time, at first use the electric drill to punch a hole to the position that dead lever 55 need fix on the wall body, press second fixing device 6 on the wall body surface afterwards, and start first driving piece 52 and drive first telescopic link 53 and extend, and then drive dead lever 55 and remove, make the toper structure department of dead lever 55 one end be close to the position on wall body surface, cooperate first driving piece 52 to drive dead lever 55 to remove in the wall body simultaneously, make the one end of dead lever 55 bore inside the wall body, and fix fixing base 1 and equipment through a plurality of dead levers 55 after a plurality of dead levers 55 bore inside the wall body.
It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Claims (8)
1. A gas sampling device for a gas chromatograph with FID and PID double detectors comprises a fixed seat (1), an air pump (2) arranged on the fixed seat, a gas pipe (3) arranged on the fixed seat, a driving device (4) arranged on one side of the fixed seat, a first fixing device (5) arranged on the fixed seat, and a second fixing device (6) arranged on the fixed seat; the method is characterized in that: the first fixing device (5) comprises a plurality of first fixing components arranged on the fixing seat; the first fixing component comprises a fixing hole (51) arranged on the fixing seat, a first driving piece (52) arranged on the fixing hole, a first telescopic rod (53) arranged on the first driving piece, and a fixing rod (55) arranged on the first telescopic rod; the air pump with the gas-supply pipe is the cooperation setting, a plurality of first fixed subassembly structures are the same and are the symmetry setting, dead lever one end is the toper structure.
2. The gas sampling apparatus usable with an FID and PID dual detector gas chromatograph according to claim 1, wherein: the driving device (4) comprises a first gear ring (41) arranged on the fixed seat (1), a second gear ring (42) arranged on the fixed seat, a plurality of gears (43) used for connecting the first gear ring and the second gear ring, a plurality of through grooves (44) respectively arranged on the gears, and a plurality of protection components respectively arranged on the gears; the protection assembly comprises a telescopic sleeve (45) arranged on the gear and a plurality of rotating baffles (46) arranged on the telescopic sleeve; first ring gear can for the fixing base rotates, the second ring gear can for the fixing base rotates, first ring gear with the gear is the cooperation setting, the second ring gear with the gear is the cooperation setting, a plurality of logical grooves with a plurality of dead levers are corresponding the setting, the rotating baffle can for the telescope tube rotates, the dead lever with the rotating baffle is the cooperation setting, be equipped with the torsional spring in the rotating baffle, torsional spring one end connect in on the rotating baffle, the torsional spring other end connect in on the telescope tube.
3. A gas sampling apparatus usable with a FID and PID dual detector gas chromatograph as recited in claim 2, wherein: the second fixing device (6) comprises a connecting pipe (61) arranged on the fixed seat (1), a sucker (62) arranged on the connecting pipe, an air suction hole (63) arranged on the fixed seat, a second telescopic rod (64) arranged on the air suction hole, a piston rod (65) arranged on the second telescopic rod, and a first elastic piece (66) used for connecting the second telescopic rod with the fixed seat; the air exhaust hole and the connecting pipe are correspondingly arranged, one end of the piston rod penetrates through the air exhaust hole, the piston rod can move relative to the air exhaust hole, and the connecting pipe is arranged at the center of the second toothed ring.
4. A gas sampling apparatus usable with an FID and PID dual detector gas chromatograph as recited in claim 3, wherein: the second fixing device (6) further comprises a fixing groove (67) arranged on the sucker (62), a rotating groove (68) arranged on the fixing seat, a rotating ring (69) used for connecting the rotating groove and the second toothed ring, and a fixing ring (60) arranged on the rotating ring; the fixed ring and the fixed groove are in matched arrangement, the rotating ring and the rotating groove are in threaded connection, and the rotating ring can move relative to the second gear ring.
5. The gas sampling apparatus usable with an FID and PID dual detector gas chromatograph of claim 4, wherein: the second fixing device (6) further comprises a rotating disc (601) used for connecting the connecting pipe (61) and the fixing seat (1), a plurality of ratchet teeth (602) arranged on the rotating disc, a vent hole (603) arranged on the rotating disc, a rotating pipe (604) arranged on the vent hole, and a moving ring (605) used for connecting the rotating pipe and the connecting pipe; the rotating disc can rotate relative to the fixed seat, the rotating disc can rotate relative to the connecting pipe, the ratchet teeth and the rotating ring are arranged in a matched mode, the rotating pipe and the moving ring are movably connected, and the moving ring is in threaded connection with the connecting pipe.
6. A gas sampling apparatus usable with a FID and PID dual detector gas chromatograph as recited in claim 5, wherein: the second fixing device (6) further comprises a telescopic ring (606) arranged on the moving ring (605), a second elastic piece (607) arranged in the telescopic ring, and a plurality of third telescopic rods (608) arranged on the telescopic ring; one end of a plurality of third telescopic links is equipped with a plurality of slope pieces (94) respectively, the third telescopic link with the sucking disc is the cooperation setting, the third telescopic link with the expansion ring is the cooperation setting.
7. A gas sampling apparatus usable with a FID and PID dual detector gas chromatograph as recited in claim 2, wherein: the driving device (4) further comprises a plurality of limiting holes (47) formed in the first gear ring (41), a limiting block (48) formed in the fixed seat, a moving block (49) formed in the limiting block, a fourth telescopic rod (40) used for connecting the limiting block and the moving block, a third elastic part (401) sleeved on the fourth telescopic rod and used for connecting the limiting block and the moving block, and a limiting rod (402) formed in the moving block; the limiting hole and the limiting rod are arranged in a matched mode, and the moving block can move relative to the fixed base.
8. A gas sampling apparatus usable with an FID and PID dual detector gas chromatograph as recited in claim 3, wherein: the second fixing device (6) further comprises a plurality of connecting assemblies for connecting the suction cup (62) and the connecting tube (61); the connecting assembly comprises a connecting block (609) arranged on the sucker, a groove (610) arranged on the connecting block, a connecting rod (611) arranged on the connecting pipe, and a connecting wire (612) used for connecting the connecting rod and the connecting pipe; the connecting components are identical in structure and symmetrically arranged, the connecting rods and the grooves are arranged in a matched mode, coil springs are arranged in the connecting pipes, and one ends of the connecting wires are arranged on the coil springs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010803171.3A CN111982609B (en) | 2020-08-11 | 2020-08-11 | Gas sampling equipment capable of being used for FID and PID dual-detector gas chromatograph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010803171.3A CN111982609B (en) | 2020-08-11 | 2020-08-11 | Gas sampling equipment capable of being used for FID and PID dual-detector gas chromatograph |
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| CN111982609A true CN111982609A (en) | 2020-11-24 |
| CN111982609B CN111982609B (en) | 2023-09-19 |
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| CN202010803171.3A Active CN111982609B (en) | 2020-08-11 | 2020-08-11 | Gas sampling equipment capable of being used for FID and PID dual-detector gas chromatograph |
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| CN210328676U (en) * | 2019-07-30 | 2020-04-17 | 无锡同源文化创意有限公司 | Landscape planted in rock |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5909758A (en) * | 1995-11-27 | 1999-06-08 | Kitamura; Akio | Supporting tool and method of installing same |
| CN207439760U (en) * | 2017-10-09 | 2018-06-01 | 湖南省产商品质量监督检验研究院 | Detection of Air Quality sample collection device |
| CN109571776A (en) * | 2018-11-30 | 2019-04-05 | 邬成眉 | A kind of contraction compacting means of building monitoring auxiliary installing device |
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|---|---|
| CN111982609B (en) | 2023-09-19 |
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