CN114544269A - Portable collecting device for collecting soil gas sample - Google Patents
Portable collecting device for collecting soil gas sample Download PDFInfo
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- CN114544269A CN114544269A CN202210220772.0A CN202210220772A CN114544269A CN 114544269 A CN114544269 A CN 114544269A CN 202210220772 A CN202210220772 A CN 202210220772A CN 114544269 A CN114544269 A CN 114544269A
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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
- G01N1/2294—Sampling soil gases or the like
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Abstract
The invention discloses a portable acquisition device for acquiring a soil gas sample, which comprises a supporting mechanism, a stabilizing mechanism, a drilling mechanism and an acquisition mechanism, wherein the supporting mechanism is connected with the stabilizing mechanism; the supporting mechanism comprises a supporting bottom plate, a first through hole which is communicated up and down is formed in the center of the supporting bottom plate, and a supporting platform which is communicated with a circular truncated cone up and down is fixedly arranged at the position, located at the first through hole, of the top of the supporting bottom plate; the stabilizing mechanism comprises a stabilizing mechanism shell fixed at the edge of the top of the supporting bottom plate; whole device can carry out swift dismantlement and assembly, and convenient transport and carrying have stronger scene adaptability, can carry out the collection work of soil gas under multiple environment, and whole device has good stability when gathering soil gas, and the collection pipe of concatenation formula can be according to the accurate soil gas sample of gathering the required position of actual demand, and the collection pole point end of autonomic formula of opening and close can effectively avoid blockking up the problem.
Description
Technical Field
The invention relates to the technical field of soil gas collection, in particular to a portable collecting device for collecting a soil gas sample.
Background
The soil gas is gas existing in soil pores, has the characteristics of poor fluidity and great influence of the physical and chemical properties of the soil on the gas characteristics, and mainly absorbs oxygen in the atmosphere in the conventional process of the soil gas, and discharges carbon dioxide generated by soil respiration into the atmosphere.
The sampling method of the soil gas mainly comprises the following steps: the static box method, the diffusion bottle method, the hollow tube method and the like are insufficient, the static box method has overlarge volume and inconvenient transportation, the field sampling and popularization are inconvenient, the diffusion bottle method has large damage to the physical properties of soil, the real soil gas characteristics cannot be well reflected, the hollow tube method needs to go deep into the soil body by means of external force no matter whether the hollow tube method is inserted or drilled, great damage to the physical properties of soil, high requirement on the control of time points in the air pumping process, low gas collection efficiency, therefore, the portable sampling device for developing soil gas samples has important practical requirements, the traditional static box is large in size, heavy, inconvenient to carry and high in processing cost of the stainless steel box, and various experimental error factors also reduce observation precision, such as unbalance of air pressure inside and outside the box.
Disclosure of Invention
The invention aims to provide a portable collecting device for collecting soil gas samples, which can be quickly disassembled and assembled and is convenient to carry.
In order to achieve the purpose, the invention provides the following technical scheme:
a portable collecting device for collecting soil gas samples comprises a supporting mechanism, a stabilizing mechanism, a drilling mechanism and a collecting mechanism;
the supporting mechanism comprises a supporting bottom plate, a first through hole which is communicated up and down is formed in the center of the supporting bottom plate, and a supporting platform which is communicated with a circular truncated cone up and down is fixedly arranged at the position, located at the first through hole, of the top of the supporting bottom plate;
the stabilizing mechanism comprises stabilizing mechanism shells fixed at the top edge of the supporting bottom plate, and at least three stabilizing mechanism shells are uniformly distributed at the top edge of the supporting bottom plate;
a first sliding block which slides up and down is arranged in the stabilizing mechanism shell, a thread restraining barrel which extends up and down is fixedly arranged in the stabilizing mechanism shell, the thread restraining barrel is positioned below the first sliding block, internal threads are machined on the inner side wall of the thread restraining barrel, and a thread ejector rod is arranged in the thread restraining barrel in a transmission manner;
the first sliding block is provided with a second through hole which is communicated up and down, the top of the first sliding block is fixedly provided with a first motor, an output shaft of the first motor is in transmission connection with the upper end of the threaded mandril, the lower end of the threaded mandril is fixedly provided with a spiral drill rod, and the support bottom plate is provided with a third through hole which is communicated with the inside of the stabilizing mechanism shell;
the top of the supporting table is fixedly provided with vertically-through sampling constraint pipes, the side faces of the sampling constraint pipes are provided with first open grooves extending along the axial direction of the sampling constraint pipes, and at least three first open grooves are uniformly arranged along the circumferential direction of the sampling constraint pipes;
the drilling mechanism comprises a plurality of electric control push rods arranged at the top of the supporting base plate, a pair of push rod supporting plates extending up and down are fixedly arranged at one side of the first through hole at the top of the supporting base plate, and one ends of the electric control push rods are connected with the positions, close to the top ends, of the push rod supporting plates through movable hinges;
a caliper mechanism is arranged on the outer side of the sampling restraint tube in a vertically sliding fit manner, the caliper mechanism comprises an inner sliding cylinder and an outer sliding cylinder which are coaxially and fixedly connected, and the inner sliding cylinder is in a sliding fit with the outer side surface of the sampling restraint tube;
the side surface of the inner sliding cylinder is provided with third slots extending up and down, the number and the positions of the third slots are consistent with those of the first slots, the inner side wall of the outer sliding cylinder is connected with a caliper block connecting rod through a movable hinge, the other end of the caliper block connecting rod is connected with a caliper block through a movable hinge, and one end of the caliper block connecting rod, which is connected with the caliper block, is lower than one end of the caliper block connecting rod, which is connected with the inner side wall of the outer sliding cylinder, so that the caliper block connecting rod is in a downward extending inclined posture;
an electric control telescopic rod is connected between the inner side wall of the outer sliding cylinder and the caliper block connecting rod, and two ends of the electric control telescopic rod are connected with the inner side wall of the outer sliding cylinder and the caliper block connecting rod through movable hinges;
the connecting point of the caliper block connecting rod and the inner side wall of the outer sliding cylinder, the connecting point of the electric control telescopic rod and the inner side wall of the outer sliding cylinder and the connecting point of the electric control telescopic rod and the caliper block connecting rod form a variable triangular structure;
the collecting mechanism comprises a plurality of collecting rods which are connected in a splicing manner, the collecting rods are vertically and slidably constrained in the sampling constraint pipes, the collecting rods are of a hollow structure which is vertically communicated, and gas collecting pipes which are coaxial with the collecting rods are fixedly arranged in the collecting rods;
a fixed snap ring is fixedly arranged at a position, close to the upper end, of the inner side wall of the acquisition rod, a plurality of restraint blocks are fixedly arranged at a position, close to the lower end, of the inner side wall of the acquisition rod, a plurality of restraint blocks are uniformly arranged along the circumferential direction of the acquisition rod, third through holes which are vertically communicated are formed in the restraint blocks, a buckle connecting rod is arranged in each third through hole in a sliding fit mode, and a buckle block is arranged at the lower end of each buckle connecting rod;
the fixed clamping ring is provided with a disassembly groove which extends through up and down, and the number of the disassembly groove is consistent with that of the buckle connecting rods;
the side surface of the collecting rod is provided with a second open groove, the second open groove is positioned above the constraint block, an eccentric cam is arranged in the second open groove in a rotating fit mode, a side cover plate is fixedly arranged on the eccentric cam, a fastening ejecting block is fixedly arranged at the top end of the buckle connecting rod, and the lower end of the fastening ejecting block is in ejecting contact fit with the upper end of the eccentric cam.
Preferably, the inner side wall of the sampling restraint pipe is fixedly provided with at least one direction restraint ring respectively close to the upper end and the lower end.
Description of the drawings: the direction restriction ring can enable the collection rod to have better directionality when penetrating into the ground, and can reduce the frictional resistance of the outer side wall of the collection rod.
Preferably, a plurality of stable reinforcing plates are fixedly arranged on the side faces, far away from each other, of the pair of push rod supporting plates, and an anti-slip gasket is fixedly arranged on the side face of the clamp block.
Preferably, the fixed cone joint that is equipped with the lateral surface for the back taper of gas collecting pipe lower extreme, the fixed toper cooperation that is equipped with the medial surface for the back taper in gas collecting pipe upper end connects, the cone joint lateral surface has the sealing washer holding tank, the sealing washer has in the sealing washer holding tank, the conical joint's the outer conical surface with the sealed cooperation of the interior conical surface that the toper cooperation connects is connected.
Description of the drawings: and the adjacent gas collecting pipes can play a good sealing role.
Preferably, a limiting ring is fixedly arranged on the outer side surface of the gas collecting pipe close to the lower end.
Preferably, the collection rod outer side wall has a binding screw hole near the second slotted upper side edge.
Description of the drawings: corresponding screws are screwed into the constraint screw holes, so that the side cover plate can be fixed, and the side cover plate is prevented from loosening due to external resistance.
Preferably, a storage containing shell is fixedly arranged at the top of the stabilizing mechanism shell, a fourth through hole which is through from top to bottom is formed in the center of the storage containing shell, a plurality of vacuum gas collecting bottles are fixedly arranged inside the storage containing shell, gas inlet ports are formed in the vacuum gas collecting bottles, gas inlet valves are connected to the gas inlet ports, a gas collecting manifold is fixedly arranged in the storage containing shell, one end of the gas collecting manifold is communicated with the gas collecting pipes, the other end of the gas collecting manifold is respectively communicated and connected with each vacuum gas collecting bottle through a plurality of gas collecting branch pipes, and opening and closing valves are arranged on the gas collecting branch pipes.
Preferably, a spring snap ring is fixedly arranged on the buckle connecting rod and below the constraint block, and a first spring is arranged between the spring snap ring and the lower end of the constraint block in a jacking and matching manner.
Description of the drawings: the first spring enables the buckle connecting rod to be reset more smoothly.
Preferably, the upper end face and the lower end face of the collecting rod are respectively provided with at least one half screw hole.
Description of the drawings: when two collection poles are connected, a complete screw hole is formed between the half screw holes, and a corresponding screw is screwed into the screw hole, so that the adjacent collection poles are prevented from generating torsion displacement.
Preferably, one of the collection rods has an inverted conical collection rod tip at the lower end, the outer side surface of the collection rod tip has a plurality of vertically extending sealing holes, the side wall of the collection rod tip has a small ventilation tube inside, the inner side wall of the collection rod is fixedly provided with a hollow gas collecting buffer ring, one end of the small ventilation tube is communicated with the sealing holes, the other end of the small ventilation tube is communicated with the inside of the gas collecting buffer ring, and the gas collecting buffer ring is communicated with the gas collecting tube through a pipeline;
gather the most advanced inside sealed awl that is equipped with of pole, sealed awl is last to have a plurality of airtight cooperation pieces, airtight cooperation piece is filled airtight downthehole, gather the most advanced internal fixation of pole and be equipped with sealed awl backup pad, sealed awl backup pad lower extreme is fixed and is equipped with sealed awl telescopic link, sealed awl telescopic link the other end with sealed awl upper end fixed connection.
Description of the drawings: the lowest end of the collecting rod is the tip of the inverted-cone-shaped collecting rod, and the small ventilating pipe is prevented from being blocked by soil through the mutual matching of the airtight matching block and the airtight hole.
Compared with the prior art, the invention has the beneficial effects that: the soil gas collecting device is reasonable in structural design and convenient to operate, the whole device can be rapidly disassembled and assembled, is convenient to carry and carry, has strong scene adaptability, can collect soil gas in various environments, has good stability when collecting the soil gas, can accurately collect soil gas samples at required positions according to actual requirements, and can effectively avoid the problem of blockage due to the tip of the self-opening and self-closing collecting rod.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a partial view A of FIG. 1;
FIG. 4 is a top view of FIG. 3;
FIG. 5 is a schematic view of the construction of the acquisition rod of the present invention;
FIG. 6 is a top view of FIG. 5;
FIG. 7 is a schematic view of the structure of the tip of the acquisition rod of the present invention;
FIG. 8 is a bottom view of FIG. 7;
fig. 9 is a schematic structural view of a storage-accommodating case of the present invention.
In the figure, 10-supporting mechanism, 11-supporting bottom plate, 111-supporting bottom plate, 112-third through hole, 12-supporting table, 13-sampling restraining tube, 131-first open slot, 132-direction restraining ring, 20-stabilizing mechanism, 21-stabilizing mechanism shell, 22-first slide block, 221-second through hole, 23-thread restraining barrel, 24-thread ejector rod, 25-first motor, 26-auger stem, 30-drilling mechanism, 301-push rod supporting plate, 302-stabilizing reinforcing plate, 31-electric control push rod, 32-caliper mechanism, 321-inner slide barrel, 322-outer slide barrel, 3211-third open slot, 33-caliper block connecting rod, 34-caliper block, 341-anti-slip gasket, 35-electric control telescopic rod, 40-acquisition mechanism, 41-acquisition rod, 411-fixed snap ring, 412-constraint block, 4111-disassembly slot, 4121-third through hole, 413-buckle connecting rod, 4131-buckle block, 414-second slot, 415-eccentric cam, 416-side cover plate, 417-first spring, 4132-fastening top block, 4133-spring snap ring, 42-gas collecting pipe, 421-conical connector, 422-conical matching connector, 4211-sealing ring accommodating groove, 423-sealing ring, 43-acquisition rod tip, 431-sealed hole, 432-small ventilation pipe, 433-gas collecting buffer ring, 44-sealed cone, 441-sealed matching block, 442-sealed cone supporting plate, 443-sealed cone, 51-storage containing shell, 511-fourth through hole, 52-vacuum gas collecting bottle, 521-gas inlet interface, 522-gas inlet valve, 53-gas collecting header pipe, 54-gas collecting branch pipe and 541-start-stop valve.
Detailed Description
The invention will now be described in detail with reference to fig. 1-9, for ease of description, the orientations described below will now be defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.
Example (b):
a portable collecting device for soil gas sample collection is shown in figure 1, and comprises a supporting mechanism 10, a stabilizing mechanism 20, a drilling mechanism 30 and a collecting mechanism 40;
as shown in fig. 1, the supporting mechanism 10 includes a supporting bottom plate 11, a supporting bottom plate 111 penetrating up and down is provided in the center of the supporting bottom plate 11, and a supporting table 12 penetrating up and down and having a circular truncated cone shape is fixedly provided on the top of the supporting bottom plate 11 at the first through hole 111;
the stabilizing mechanism 20 comprises stabilizing mechanism shells 21 fixed at the top edge of the supporting bottom plate 11, and at least three stabilizing mechanism shells 21 are uniformly distributed at the top edge of the supporting bottom plate 11;
as shown in fig. 1, a first slide block 22 which slides up and down is arranged in the stabilizing mechanism housing 21, a thread restraining barrel 23 which extends up and down is fixedly arranged in the stabilizing mechanism housing 21, the thread restraining barrel 23 is positioned below the first slide block 22, internal threads are processed on the inner side wall of the thread restraining barrel 23, and a thread ejector rod 24 is arranged in the thread restraining barrel 23 in a transmission manner;
the first sliding block 22 is provided with a second through hole 221 which is through up and down, the top of the first sliding block 22 is fixedly provided with a first motor 25, an output shaft of the first motor 25 is in transmission connection with the upper end of the threaded mandril 24, the lower end of the threaded mandril 24 is fixedly provided with a spiral drill rod 26, and the support base plate 11 is provided with a third through hole 112 which is communicated with the inside of the stabilizing mechanism shell 21;
the top of the supporting table 12 is fixedly provided with vertically-through sampling constraint tubes 13, the side surfaces of the sampling constraint tubes 13 are provided with first slots 131 extending along the axial direction of the sampling constraint tubes, and at least three first slots 131 are uniformly arranged along the circumferential direction of the sampling constraint tubes 13;
as shown in FIG. 3, at least one direction restriction ring 132 is fixed on the inner side wall of the sampling restriction tube 13 near the upper end and the lower end respectively.
As shown in fig. 1, the drilling mechanism 30 includes a plurality of electrically controlled push rods 31 disposed at the top of the supporting base plate 11, a pair of push rod supporting plates 301 extending up and down are fixedly disposed at one side of the first through hole 111 at the top of the supporting base plate 11, and one end of each electrically controlled push rod 31 is connected to a position near the top end of the push rod supporting plate 301 through a movable hinge;
a plurality of stable reinforcing plates 302 are fixedly arranged on the side surfaces of the pair of push rod supporting plates 301 which are far away from each other;
as shown in fig. 3, a caliper mechanism 32 is provided outside the sampling restriction tube 13 in a vertically sliding fit manner, the caliper mechanism 32 includes an inner sliding cylinder 321 and an outer sliding cylinder 322 which are coaxially and fixedly connected, and the inner sliding cylinder 321 is in a sliding fit on the outer side surface of the sampling restriction tube 13;
as shown in fig. 3, the side surface of the inner sliding cylinder 321 is provided with third slots 3211 extending vertically, the number and the positions of the third slots 3211 are the same as those of the first slots 131, the inner side wall of the outer sliding cylinder 322 is connected with a caliper block connecting rod 33 through a movable hinge, the other end of the caliper block connecting rod 33 is connected with a caliper block 34 through a movable hinge, the side surface of the caliper block 34 is fixedly provided with an anti-slip pad 341, and one end of the caliper block connecting rod 33 connected with the caliper block 34 is lower than one end connected with the inner side wall of the outer sliding cylinder 322 and is in an inclined downward extending posture;
an electric control telescopic rod 35 is connected between the inner side wall of the outer sliding cylinder 322 and the caliper block connecting rod 33, and two ends of the electric control telescopic rod 35 are connected with the inner side wall of the outer sliding cylinder 322 and the caliper block connecting rod 33 through movable hinges;
the connecting point of the caliper block connecting rod 33 and the inner side wall of the outer sliding cylinder 322, the connecting point of the electric control telescopic rod 35 and the inner side wall of the outer sliding cylinder 322 and the connecting point of the electric control telescopic rod 35 and the caliper block connecting rod 33 form a variable triangular structure;
as shown in fig. 5, the collecting mechanism 40 includes a plurality of collecting rods 41 connected in a splicing manner, the collecting rods 41 are constrained in the sampling constraining tube 13 in a vertically sliding manner, the collecting rods 41 are of a hollow structure penetrating vertically, and a gas collecting tube 42 coaxial with the collecting rods 41 is fixedly arranged in the collecting rods 41;
the fixed cone 421 that is equipped with the lateral surface for the back taper in discharge tube 42 lower extreme, the fixed toper cooperation joint 422 that is equipped with the medial surface for the back taper in discharge tube 42 upper end, cone 421 lateral surfaces have sealing washer holding tank 4211, sealing washer 423 has in the sealing washer holding tank 4211, the outer conical surface of cone 421 with the sealed cooperation of the inner conical surface that the toper cooperation connects 422 is connected, discharge tube 42 lateral surface is close to the fixed spacing ring 424 that is equipped with in lower extreme position.
As shown in fig. 5, a fixed snap ring 411 is fixedly arranged at a position, close to the upper end, of the inner side wall of the acquisition rod 41, a plurality of restriction blocks 412 are fixedly arranged at a position, close to the lower end, of the inner side wall of the acquisition rod 41, a plurality of the restriction blocks 412 are uniformly arranged along the circumferential direction of the acquisition rod 41, a third through hole 4121 which is through up and down is formed in each restriction block 412, a buckle connecting rod 413 is arranged in each third through hole 4121 in a sliding fit manner, and a buckle block 4131 is arranged at the lower end of each buckle connecting rod 413;
the fixed clamp ring 411 is provided with a disassembly slot 4111 which extends and penetrates up and down, and the number of the disassembly slot 4111 is consistent with that of the buckle connecting rod 413;
the side surface of the collecting rod 41 is provided with a second slot 414, the second slot 414 is located above the constraint block 412, the second slot 414 is internally and rotatably provided with an eccentric cam 415, a side cover plate 416 is fixedly arranged on the eccentric cam 415, the top end of the buckle connecting rod 413 is fixedly provided with a fastening top block 4132, and the lower end of the fastening top block 4132 is in abutting contact with the upper end of the eccentric cam 415.
As shown in fig. 6, the upper and lower end faces of the collecting rod 41 are each provided with at least one half screw hole 418.
A spring snap ring 4133 is fixedly arranged below the restraint block 412 on the buckle connecting rod 413, and a first spring 417 is arranged between the spring snap ring 4133 and the lower end of the restraint block 412 in a pressing fit manner.
The outer side wall of the collecting rod 41 is provided with a binding screw hole 419 close to the upper edge of the second slot 414.
As shown in fig. 7, the lower end of one of the collection rods 41 is provided with an inverted conical collection rod tip 43, the outer side surface of the collection rod tip 43 is provided with a plurality of vertically extending closed holes 431, the side wall of the collection rod tip 43 is internally provided with an air-permeable small tube 432, the inner side wall of the collection rod 41 is fixedly provided with a hollow air-collecting buffer ring 433, one end of the air-permeable small tube 432 is communicated with the closed holes 431, the other end of the air-permeable small tube 432 is communicated with the inside of the air-collecting buffer ring 433, and the air-collecting buffer ring 433 is communicated with the air-collecting pipe 42 through a pipeline;
the collection rod tip 43 is internally provided with a sealing cone 44, the sealing cone 44 is provided with a plurality of sealing matching blocks 441, the sealing matching blocks 441 are filled in the sealing hole 431, a sealing cone support plate 442 is fixedly arranged in the collection rod tip 43, a sealing cone expansion rod 443 is fixedly arranged at the lower end of the sealing cone support plate 442, and the other end of the sealing cone expansion rod 443 is fixedly connected with the upper end of the sealing cone 44.
As shown in fig. 1, a storage accommodating shell 51 is fixedly arranged at the top of the stabilizing mechanism housing 21, a fourth through hole 511 which penetrates up and down is formed in the center of the storage accommodating shell 51, as shown in fig. 9, a plurality of vacuum gas collecting bottles 52 are fixedly arranged inside the storage accommodating shell 51, an air inlet interface 521 is formed on each vacuum gas collecting bottle 52, an air inlet valve 522 is connected to each air inlet interface 521, a gas collecting manifold 53 is fixedly arranged inside the storage accommodating shell 51, one end of the gas collecting manifold 53 is communicated with the gas collecting pipe 42, the other end of the gas collecting manifold 53 is respectively communicated and connected with each vacuum gas collecting bottle 52 through a plurality of gas collecting branch pipes 54, and an on-off valve 541 is formed on each gas collecting branch pipe 54.
In the practical application process of the invention, the whole device is placed at a required collection point, the output shaft of the first motor 25 drives the threaded ejector rod 24 to rotate, the threaded ejector rod 24 moves downwards simultaneously under the constraint of the threaded constraint barrel 23, the first motor 25 is communicated with the first sliding block 22 to move downwards together, and the auger stem 26 is driven by the threaded ejector rod 24 to drill underground;
after the auger stem 26 is drilled into the ground, the whole device can be stabilized, the acquisition rod 41 with the acquisition rod tip 43 is placed into the sampling constraint tube 13, the electric control telescopic rod 35 extends out to enable the caliper block 34 at one end of the caliper block connecting rod 33 to be pressed against the outer side surface of the acquisition rod 41, the acquisition rod 41 is tightened under the combined action of the multiple caliper blocks 34, then the electric control push rod 31 extends, the electric control push rod 31 drives the caliper mechanism 32 to move downwards, the caliper block 34 in the caliper mechanism 32 drives the acquisition rod 41 to be inserted into the ground, when the electric control push rod 31 extends to the limit, the electric control telescopic rod 35 retracts to enable the multiple caliper blocks 34 to be separated from the acquisition rod 41, and then the electric control push rod 31 retracts to the shortest limit;
the collecting rods 41 are gradually pushed underground by repeating the steps for a plurality of times, when a plurality of collecting rods 41 are required to be spliced, the buckle connecting rod 413 in the lower end of one collecting rod 41 is inserted into the top end of the other collecting rod 41, the upper end surface of the buckle block 4131 at the lower end of the buckle connecting rod 413 is tightly clamped on the lower end surface of the fixed clamp ring 411, and adjacent air collecting pipes 42 are connected in a sealing mode;
in the initial position, the airtight fitting block 441 is filled in the airtight hole 431, so that the outer side surface of the collection rod tip 43 is a complete smooth outer conical surface, when the collection rod tip 43 reaches the collection position, the sealing cone telescopic rod 443 retracts, so that the airtight fitting block 441 is separated from the airtight hole 431, at this time, the air-ventilating small tube 432 is communicated with the outside, soil gas enters the gas-collecting buffer ring 433 through the air-ventilating small tube 432, the soil gas in the gas-collecting buffer ring 433 enters the gas-collecting pipe 53 through the gas-collecting pipe 42, the soil gas in the gas-collecting pipe 53 is conveyed to the inside of the vacuum gas-collecting bottle 52 through each gas-collecting branch pipe 54, and the collection of the soil gas is completed.
Claims (10)
1. A portable collecting device for soil gas sample collection is characterized by comprising a supporting mechanism (10), a stabilizing mechanism (20), a drilling mechanism (30) and a collecting mechanism (40);
the supporting mechanism (10) comprises a supporting bottom plate (11), a first through hole (111) which is through up and down is formed in the center of the supporting bottom plate (11), and a supporting platform (12) which is through up and down and is in a truncated cone shape is fixedly arranged at the position, located at the first through hole (111), of the top of the supporting bottom plate (11);
the stabilizing mechanism (20) comprises stabilizing mechanism shells (21) fixed at the top edge of the supporting bottom plate (11), and at least three stabilizing mechanism shells (21) are uniformly distributed at the top edge of the supporting bottom plate (11);
a first sliding block (22) which slides up and down is arranged in the stabilizing mechanism shell (21), a thread restraining barrel (23) which extends up and down is fixedly arranged in the stabilizing mechanism shell (21), the thread restraining barrel (23) is positioned below the first sliding block (22), internal threads are machined on the inner side wall of the thread restraining barrel (23), and a thread ejector rod (24) is arranged in the thread restraining barrel (23) in a transmission manner;
a second through hole (221) which is through up and down is formed in the first sliding block (22), a first motor (25) is fixedly arranged at the top of the first sliding block (22), an output shaft of the first motor (25) is in transmission connection with the upper end of the threaded ejector rod (24), a spiral drill rod (26) is fixedly arranged at the lower end of the threaded ejector rod (24), and a third through hole (112) which is communicated with the interior of the stabilizing mechanism shell (21) is formed in the supporting base plate (11);
the top of the supporting table (12) is fixedly provided with sampling constraint tubes (13) which are vertically communicated, the side surfaces of the sampling constraint tubes (13) are provided with first slots (131) which axially extend along the sampling constraint tubes, and at least three first slots (131) are uniformly arranged along the circumferential direction of the sampling constraint tubes (13);
the drilling mechanism (30) comprises a plurality of electric control push rods (31) arranged at the top of the supporting base plate (11), a pair of push rod supporting plates (301) extending up and down is fixedly arranged at one side of the first through hole (111) at the top of the supporting base plate (11), and one end of each electric control push rod (31) is connected with the position, close to the top end, of each push rod supporting plate (301) through a movable hinge;
a caliper mechanism (32) is arranged on the outer side of the sampling restraint tube (13) in a vertically sliding fit manner, the caliper mechanism (32) comprises an inner sliding cylinder (321) and an outer sliding cylinder (322) which are coaxially and fixedly connected, and the inner sliding cylinder (321) is in a sliding fit manner on the outer side surface of the sampling restraint tube (13);
the side surface of the inner sliding cylinder (321) is provided with third slots (3211) which extend up and down, the number and the positions of the third slots (3211) are consistent with those of the first slots (131), the inner side wall of the outer sliding cylinder (322) is connected with a caliper block connecting rod (33) through a movable hinge, the other end of the caliper block connecting rod (33) is connected with a caliper block (34) through a movable hinge, and one end of the caliper block connecting rod (33) connected with the caliper block (34) is lower than one end of the caliper block connecting rod connected with the inner side wall of the outer sliding cylinder (322) and is in an inclined downward extending posture;
an electric control telescopic rod (35) is connected between the inner side wall of the outer sliding cylinder (322) and the caliper block connecting rod (33), and two ends of the electric control telescopic rod (35) are connected with the inner side wall of the outer sliding cylinder (322) and the caliper block connecting rod (33) through movable hinges;
the connecting point of the caliper block connecting rod (33) and the inner side wall of the outer sliding cylinder (322), the connecting point of the electric control telescopic rod (35) and the inner side wall of the outer sliding cylinder (322) and the connecting point of the electric control telescopic rod (35) and the caliper block connecting rod (33) form a variable triangular structure;
the collecting mechanism (40) comprises a plurality of collecting rods (41) which are connected in a splicing manner, the collecting rods (41) are constrained in the sampling constraint pipe (13) in a vertical sliding manner, the collecting rods (41) are of a hollow structure which is communicated up and down, and a gas collecting pipe (42) coaxial with the collecting rods (41) is fixedly arranged in the collecting rods;
a fixed clamping ring (411) is fixedly arranged at a position, close to the upper end, of the inner side wall of the acquisition rod (41), a plurality of restriction blocks (412) are fixedly arranged at a position, close to the lower end, of the inner side wall of the acquisition rod (41), a third through hole (4121) which is through up and down is formed in each restriction block (412) and is arranged along the circumferential direction of the acquisition rod (41), a buckle connecting rod (413) is arranged in each third through hole (4121) in a sliding fit mode, and a buckle block (4131) is arranged at the lower end of each buckle connecting rod (413);
the fixed clamping ring (411) is provided with a disassembly slot (4111) which extends and runs through up and down, and the number of the disassembly slot (4111) is consistent with that of the buckle connecting rod (413);
the side surface of the acquisition rod (41) is provided with a second groove (414), the second groove (414) is located above the constraint block (412), an eccentric cam (415) is arranged in the second groove (414) in a rotating fit mode, a side cover plate (416) is fixedly arranged on the eccentric cam (415), a fastening top block (4132) is fixedly arranged at the top end of the buckle connecting rod (413), and the lower end of the fastening top block (4132) is in pressing contact fit with the upper end of the eccentric cam (415).
2. The portable collection device for soil gas sample collection of claim 1, wherein: the inner side wall of the sampling restraint pipe (13) is at least fixedly provided with a direction restraint ring (132) close to the upper end and the lower end respectively.
3. The portable collection device for soil gas sample collection of claim 1, wherein: the side surfaces, far away from each other, of the pair of push rod supporting plates (301) are fixedly provided with a plurality of stable reinforcing plates (302), and the side surfaces of the clamp blocks (34) are fixedly provided with anti-skidding gaskets (341).
4. The portable collection device for soil gas sample collection of claim 1, wherein: the fixed cone joint (421) that are equipped with the lateral surface for the back taper of gas collecting pipe (42) lower extreme, the fixed toper cooperation that is equipped with the medial surface for the back taper in gas collecting pipe (42) upper end connects (422), cone joint (421) lateral surface has sealing washer holding tank (4211), sealing washer (423) have in sealing washer holding tank (4211), the outer conical surface of cone joint (421) with the sealed cooperation of the interior conical surface that the toper cooperation connects (422) is connected.
5. The portable collection device of claim 4, wherein said portable collection device comprises: and a limiting ring (424) is fixedly arranged on the outer side surface of the gas collecting pipe (42) close to the lower end.
6. The portable collection device for soil gas sample collection of claim 1, wherein: the outer side wall of the collecting rod (41) is provided with a binding screw hole (419) close to the upper side edge of the second groove (414).
7. The portable collection device for soil gas sample collection of claim 1, wherein: the stabilizing mechanism is characterized in that a storage containing shell (51) is fixedly arranged at the top of the stabilizing mechanism shell (21), a fourth through hole (511) which is through up and down is formed in the center of the storage containing shell (51), a plurality of vacuum gas collecting bottles (52) are fixedly arranged in the storage containing shell (51), a gas inlet interface (521) is formed in each vacuum gas collecting bottle (52), a gas inlet valve (522) is connected to each gas inlet interface (521), a gas collecting manifold (53) is fixedly arranged in the storage containing shell (51), one end of each gas collecting manifold (53) is communicated with the gas collecting pipe (42), the other end of each gas collecting manifold (53) is communicated with each vacuum gas collecting bottle (52) through a plurality of gas collecting branch pipes (54), and an opening and closing valve (541) is formed in each gas collecting branch pipe (54).
8. The portable collection device for soil gas sample collection of claim 1, wherein: a snap ring (4133) is fixedly arranged on the buckle connecting rod (413) below the constraint block (412), and a first spring (417) is arranged between the snap ring (4133) and the lower end of the constraint block (412) in a pressing fit mode.
9. The portable collection device for soil gas sample collection of claim 1, wherein: the upper end face and the lower end face of the collecting rod (41) are respectively provided with at least one half screw hole (418).
10. The portable collection device for soil gas sample collection of claim 1, wherein: one of the collection rods (41) is provided with an inverted conical collection rod tip (43) at the lower end, the outer side surface of the collection rod tip (43) is provided with a plurality of vertically extending closed holes (431), the side wall of the collection rod tip (43) is internally provided with an air small tube (432), the inner side wall of the collection rod (41) is fixedly provided with a hollow air collection buffer ring (433), one end of the air small tube (432) is communicated with the closed holes (431), the other end of the air small tube (432) is communicated with the inside of the air collection buffer ring (433), and the air collection buffer ring (433) is communicated with the air collection pipe (42) through a pipeline;
the collecting rod is characterized in that a sealing cone (44) is arranged inside the collecting rod tip (43), a plurality of sealing matching blocks (441) are arranged on the sealing cone (44), the sealing matching blocks (441) are filled in the sealing hole (431), a sealing cone supporting plate (442) is fixedly arranged in the collecting rod tip (43), a sealing cone telescopic rod (443) is fixedly arranged at the lower end of the sealing cone supporting plate (442), and the other end of the sealing cone telescopic rod (443) is fixedly connected with the upper end of the sealing cone (44).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210220772.0A CN114544269B (en) | 2022-03-08 | 2022-03-08 | Portable collecting device for collecting soil gas samples |
| JP2022071989A JP7144658B1 (en) | 2022-03-08 | 2022-04-25 | Portable sampler for taking soil gas samples |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210220772.0A CN114544269B (en) | 2022-03-08 | 2022-03-08 | Portable collecting device for collecting soil gas samples |
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| CN114544269B CN114544269B (en) | 2023-02-07 |
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| CN (1) | CN114544269B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115452457A (en) * | 2022-09-22 | 2022-12-09 | 生态环境部南京环境科学研究所 | Sampling device and method for ecological risk evaluation of soil in high-geological background area |
| CN115824729A (en) * | 2022-12-13 | 2023-03-21 | 山东省农业科学院 | Greenhouse gas collecting device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN114544269B (en) | 2023-02-07 |
| JP2023131078A (en) | 2023-09-21 |
| JP7144658B1 (en) | 2022-09-30 |
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