CN114323800B - Pore water collection system in soil - Google Patents
Pore water collection system in soil Download PDFInfo
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- CN114323800B CN114323800B CN202210037378.3A CN202210037378A CN114323800B CN 114323800 B CN114323800 B CN 114323800B CN 202210037378 A CN202210037378 A CN 202210037378A CN 114323800 B CN114323800 B CN 114323800B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 61
- 239000011148 porous material Substances 0.000 title claims abstract description 27
- 239000002689 soil Substances 0.000 title claims abstract description 21
- 238000005070 sampling Methods 0.000 claims abstract description 162
- 238000009434 installation Methods 0.000 claims abstract description 35
- 239000007788 liquid Substances 0.000 claims description 39
- 239000012530 fluid Substances 0.000 claims description 30
- 238000009423 ventilation Methods 0.000 claims description 24
- 238000005192 partition Methods 0.000 claims description 19
- 238000004891 communication Methods 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 16
- 238000003780 insertion Methods 0.000 claims description 12
- 230000037431 insertion Effects 0.000 claims description 12
- 230000000903 blocking effect Effects 0.000 claims description 7
- 238000000429 assembly Methods 0.000 claims description 5
- 230000000712 assembly Effects 0.000 claims description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 2
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 2
- 241001330002 Bambuseae Species 0.000 claims description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 2
- 239000011425 bamboo Substances 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims description 2
- 239000012535 impurity Substances 0.000 abstract description 5
- 239000013049 sediment Substances 0.000 description 6
- 238000000926 separation method Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000007654 immersion Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a pore water collecting device in soil, which comprises an outer cylinder, a top cover and a conical cylinder, wherein the top cover is fixedly connected to the top end of the outer cylinder, the top of the conical cylinder is fixedly connected with the bottom end of the outer cylinder, an operation shaft is coaxially arranged in the outer cylinder, the top end of the operation shaft penetrates out of the top cover and is rotationally connected with the top cover, the bottom end of the operation shaft is rotationally connected with a bottom plate, and the bottom plate is fixedly connected to the top of the conical cylinder. According to the invention, the outer cylinder, the top cover and the conical cylinder are arranged, so that the device is convenient to carry, can be directly inserted into the ground to sample interstitial water, and sampling personnel can start to collect by only rotating the operation shaft, so that the device is convenient and quick to sample; when inserting the deposit in, the arc door is closed and the sampling component is in the shrink state, can avoid impurity to get into in the installation box to reduce the resistance when inserting the deposit, and when sampling, the sampling component inserts in the deposit, can improve sampling efficiency.
Description
Technical Field
The invention relates to the technical field of pore water collection. In particular to a pore water collecting device in soil.
Background
Pore water is groundwater deposited among particles of underground loose sediments, a large amount of information is hidden in the pore water, and the information can be obtained through collecting and carrying out certain experimental analysis.
In the prior art, pore water is generally taken out through a sampling device, then secondary separation is carried out, the trouble of secondary transportation exists, a certain influence can exist on the experiment of the pore water, and different equipment is needed for sampling and secondary separation, so that the operation is inconvenient.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to provide a pore water collecting device in soil, which is convenient to operate, collect and sample and improves the working efficiency.
In order to solve the technical problems, the invention provides the following technical scheme: the pore water collecting device in the soil comprises an outer cylinder, a top cover and a conical cylinder, wherein the top cover is fixedly connected to the top end of the outer cylinder, the top of the conical cylinder is fixedly connected with the bottom end of the outer cylinder, an operation shaft is coaxially arranged in the outer cylinder, the top end of the operation shaft penetrates out of the top cover and is rotationally connected with the top cover, the bottom end of the operation shaft is rotationally connected with a bottom plate, and the bottom plate is fixedly connected to the top of the conical cylinder; the side wall of the outer barrel is provided with a rectangular groove, the inner side wall of the outer barrel is provided with an installation box, the opening side of the installation box is inserted into the rectangular groove and is in sealing fit with the groove wall of the rectangular groove, the installation box is respectively provided with a suction pipe and a sampling assembly in a penetrating manner, the liquid outlet end of the suction pipe is in fluid conduction, the sampling assembly is in sliding fit in the installation box, and the top of the storage box and the top of the liquid outlet end of the sampling assembly are in fluid conduction with a ventilation water blocking assembly; the top of the bottom plate is fixedly connected with a first negative pressure component and a second negative pressure component, the suction end of the first negative pressure component is in fluid communication with the air outlet end of the ventilation water-blocking component at the top of the storage box through a hose, and the suction end of the second negative pressure component is in fluid communication with the air outlet end of the ventilation water-blocking component at the top of the liquid outlet end of the sampling component through a hose; the side wall of the operation shaft is fixedly connected with a cam driving block, and the driving end of the cam driving block is in driving connection with one end, close to the operation shaft, of the sampling assembly.
According to the pore water collecting device in soil, the suction pipe and the sampling assembly are positioned on the same cross section of the outer barrel, the sampling assemblies are arranged along the radial direction of the outer barrel, a vertical partition plate is arranged between the suction pipe and the sampling assembly along the height direction of the outer barrel, the side wall of the vertical partition plate is in sealing fit with the inner side wall of the installation box, and the installation box is divided into two mutually independent spaces by the vertical partition plate; the utility model discloses a convenient operation of the motor, including the urceolus, the urceolus is seted up along its circumference in the section of thick bamboo wall, just the sliding tray passes the rectangle groove, sliding fit has the arc door in the sliding tray, the area of arc door is greater than the area of rectangle groove, the opening lateral wall face of mounting box with one side of perpendicular baffle all with the sealed sliding fit of the inside wall face of arc door, fixedly connected with actuating lever on the inside wall of arc door, the other end of actuating lever with the lateral wall fixed connection of operating shaft.
Above-mentioned pore water collection system in soil, sampling assembly includes sampling tube and pull rod, the sampling tube runs through the installation box, coaxial fixed connection of pull rod is in on the sampling tube is close to the one end of operating shaft, fixedly connected with inserts the pole on the other end of pull rod, the other end fixedly connected with stopper of inserting the pole, the middle part sealing fit in the sampling tube has the filter, be located on the pipe wall of sampling tube the both sides of filter all are provided with the plug, the sampling tube is kept away from on the one end of operating shaft seted up the inlet, laminating has the rubber slab on the inside wall of sampling tube, the rubber slab seals the laminating and is in on the inlet, one side of rubber slab with sampling tube inside wall fixed connection; the ventilation water-blocking component is arranged on the top of the sampling tube and is in fluid communication with the sampling tube.
Above-mentioned pore water collection system in soil, the cam drive piece includes the arc, the indent side of arc with the lateral wall fixed connection of operating axle, the equal fixedly connected with backup pad in evagination lateral wall upper portion and lower part of arc, equal fixedly connected with deflector on the opposite side of backup pad, two the opposite lateral wall face of deflector is close to each other, two interval between the deflector equals the diameter of inserting the pole, the length of inserting the pole is greater than the thickness of deflector, insert two in the gap between the deflector, the stopper with an end wall face is connected with to the inserting pole the inside wall face overlap joint of deflector, the pull rod with the one end wall face that the inserting pole is connected with the outside wall face overlap joint of deflector.
Above-mentioned pore water collection system in soil, the deflector includes parallel section and drive section, parallel section with the everywhere thickness of drive section equals, parallel section with the smooth transitional coupling of drive section, the inside wall optional point position of parallel section extremely the radial distance of operating shaft axis equals, the inside wall of drive section extremely the radial distance of operating shaft axis: gradually increasing from an end near the parallel section to an end far from the parallel section; in a rotational direction in which the cam drive block drives the sampling assembly away from the operating shaft: the parallel section is positioned in front of the driving section; on the same cross section, the included angle formed by the two ends of the parallel section and the axis of the operation shaft is equal to the included angle formed by the side wall of the installation box on one side of the suction pipe and the vertical partition plate and the axis of the operation shaft.
The pore water collection device in soil comprises a closed pipe, a floating ball, a liquid storage tank and a connecting pipe, wherein the top end and the bottom end of the inner wall of the closed pipe are concave spherical surfaces with the same diameter as the floating ball, the floating ball is movably arranged in the closed pipe, an air outlet is formed below the side wall of the closed pipe, the minimum straight line distance from the air outlet to the bottom end of the inner wall of the closed pipe is larger than the radius of the floating ball, an air vent is formed in the top end of the inner wall of the closed pipe, the liquid storage tank is fixed on the side wall of the closed pipe, the closed pipe is in fluid conduction with the liquid storage tank through the air vent, the air vent is positioned above the side wall of the liquid storage tank, and the connecting pipe is in fluid conduction with the top of the liquid storage tank; the bottom end of the closed tube of the ventilation water-blocking assembly above the sampling assembly is vertically inserted into the tube wall of the sampling tube, and the air outlet is in fluid communication with the sampling tube; the bottom end of the closed pipe of the ventilation water-blocking component positioned at the top of the storage box is vertically inserted into the top of the storage box, and the air outlet is in fluid communication with the storage box.
The first negative pressure component and the second negative pressure component are identical in structure, the first negative pressure component comprises a piston cylinder, a piston and a piston rod, the piston is in sealing fit in the piston cylinder, the piston rod is coaxially arranged in the piston cylinder, the top end of the piston rod is fixedly connected with the bottom end of the piston, a supporting frame is fixedly connected in the piston cylinder, the bottom end of the piston rod penetrates through the supporting frame and is fixedly connected with a fixed block, a tension spring is sleeved on the piston rod, one end of the tension spring is fixedly connected with the bottom of the piston, the other end of the tension spring is fixedly connected with the top of the supporting frame, a stop block is fixedly connected on the side wall of the fixed block along the radial direction of the piston cylinder, and a transverse groove is formed in the side wall of the piston cylinder at a position corresponding to the stop block; the side wall of the operation shaft is fixedly connected with a movable block, the movable block is clamped into a transverse groove of the side wall of the piston cylinder of the first negative pressure component, and the bottom wall of the stop block is lapped on the top of the movable block; the top end of the piston cylinder of the first negative pressure component is in fluid communication with a connecting pipe of the ventilation water-blocking component at the top of the storage box through a hose; the side wall of the sampling tube is fixedly connected with a baffle plate, the baffle plate is fixedly connected with a bolt, and the bolt is inserted into a transverse groove of the side wall of the piston cylinder of the second negative pressure component and is propped against the bottom of the stop block.
According to the pore water collecting device in the soil, the top end of the side wall of the operating shaft is fixedly connected with the handle; the number of the sampling components is two or more than two, the two or more than two sampling components are arranged along the height direction of the installation box, a diaphragm is arranged between every two adjacent sampling components, and two sides of the diaphragm are fixedly connected with the side wall of the vertical diaphragm and the inner side wall of the installation box respectively.
The technical scheme of the invention has the following beneficial technical effects:
1. according to the invention, the outer cylinder, the top cover and the conical cylinder are arranged, so that the device is convenient to carry, can be directly inserted into the ground to sample interstitial water, and sampling personnel can start to collect by only rotating the operation shaft, so that the device is convenient and quick to sample; through setting up operating shaft, cam driving piece and sampling assembly, during the sample, rotate the operating shaft just can control the arc door and open and make the sampling assembly stretch out, insert in the deposit, easy operation is swift; when inserting the deposit in, the arc door is closed and the sampling component is in the shrink state, can avoid impurity to get into in the installation box to reduce the resistance when inserting the deposit, and when sampling, the sampling component inserts in the deposit, can improve sampling efficiency.
2. According to the invention, the installation box can be divided into two independent spaces by arranging the vertical partition plate and is matched with the suction pipe, the arc-shaped door is opened to a certain angle by controlling the operation shaft to rotate to a certain angle in the initial sampling stage, and as the sediment is inserted into the acquisition device, certain disturbance is caused to the sediment to cause turbidity of the water body, the subsequent test is caused to be troublesome by direct sampling, the turbid water body can be pumped away by utilizing the suction pipe and the storage box, so that the cleanliness of sampling is improved, and the turbid water body cannot flow to the sampling assembly under the action of the vertical partition plate, so that the sampling assembly is ensured not to receive pollution of the turbid water body.
3. According to the invention, by arranging the cam driving block, the parallel section can ensure that the sampling assembly cannot be displaced when the arc-shaped door is opened to pump away the turbid water body, collision is avoided, and the driving section can drive the sampling assembly to shrink or stretch out, so that sampling is facilitated.
4. According to the invention, the first negative pressure component and the movable block are arranged, so that the first negative pressure component can be synchronously started when the operation shaft is rotated, and suction is performed; the opening of the second negative pressure component is controlled by the sampling component, and the movement of the sampling component is controlled by the driving section, so that when the first negative pressure component is opened, the second negative pressure component is closed, and the opening of the arc door, the extension of the sampling component and the opening of the second negative pressure component can be realized only by continuously rotating the operation shaft, and the three components are coordinated and matched, so that the operation steps of sampling personnel are reduced, and the sampling is convenient; the first negative pressure component and the second negative pressure component are purely mechanical mechanisms, no electric control component participates, and the long-time immersion in water is used for sampling, so that the running stability can be greatly improved, and the smooth proceeding of sampling is ensured; the sampling tube is divided into two sections of spaces by the filter plate, and when sampling is performed, the filtering can be realized, and the gap water with certain impurities and the pure gap water are obtained, so that the sampling can be directly performed without secondary separation during subsequent experiments.
5. According to the invention, by arranging the ventilation water-blocking component, sampling can be automatically stopped when the storage box or the sampling tube is filled with liquid, the liquid can be prevented from entering the negative pressure component, the running stability of the equipment is improved, and even if part of the liquid flows out, the liquid can be collected in the liquid storage box, so that the protection performance is improved.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic top sectional view of the present invention;
FIG. 3 is a schematic perspective view of the invention with the outer barrel removed;
FIG. 4 is a schematic perspective view of the invention with the outer barrel and the arcuate door removed;
FIG. 5 is a schematic perspective view of the cam driving block of the present invention mated with an insertion rod;
FIG. 6 is a schematic top view of the cam drive block of the present invention mated with an insert rod;
FIG. 7 is a schematic top cross-sectional view of the suction tube and sampling assembly of the present invention mounted within a mounting box;
FIG. 8 is a schematic elevational structural view of the vented water blocking assembly of the present invention;
FIG. 9 is a schematic cross-sectional elevation view of a first negative pressure assembly of the present invention;
FIG. 10 is a schematic cross-sectional elevation view of a second negative pressure assembly of the present invention.
The reference numerals in the drawings are as follows: 1-an outer cylinder; 2-top cover; 3-a cone; 4-an operation shaft; 5-mounting boxes; 6-suction tube; 601-a storage box; 7-a sampling assembly; 701-filtering plate; 702-a rubber plate; 703-a rubber plug; 704, a liquid inlet; 705-tie rod; 706-inserting a rod; 707-limiting blocks; 708-a sampling tube; 8-rectangular grooves; 9-arc door; 10-a cam drive block; 101-arc plates; 102-supporting a plate; 103-a guide plate; 104-parallel segments; 105-a drive section; 11-a bottom plate; 12-a first negative pressure component; 121-a piston cylinder; 122-piston; 123-piston rod; 124-tension springs; 125-supporting frames; 126-fixing blocks; 127-stop; 128-transverse grooves; 13-a second negative pressure assembly; 14-a venting water-blocking assembly; 141-closing the tube; 142-floating ball; 143-an air outlet; 144-a liquid storage tank; 145-connecting pipes; 15-vertical partition plates; 16-diaphragm plates; 17-a movable block; 18-a drive rod; 19-a baffle; 20-plug pins.
Detailed Description
Referring to fig. 1 and 2, the pore water collecting device in soil in this embodiment includes an outer cylinder 1, a top cover 2 and a conical cylinder 3, the top cover 2 is in threaded connection with the top end of the outer cylinder 1, the top of the conical cylinder 3 is in threaded connection with the bottom end of the outer cylinder 1, an operation shaft 4 is coaxially arranged in the outer cylinder 1, a handle is fixedly connected with the top end of the side wall of the operation shaft 4, the top end of the operation shaft 4 penetrates out of the top cover 2 and is in rotational connection with the top cover 2, a bottom plate 11 is rotatably connected with the bottom end of the operation shaft 4, the bottom plate 11 is fixedly connected with the top of the conical cylinder 3, and through the arrangement of the outer cylinder 1, the top cover 2 and the conical cylinder 3, the device is convenient to carry, gap water sampling can be directly inserted into the ground, sampling personnel can start to collect by only rotating the operation shaft 4, and rapid sampling is realized; a rectangular groove 8 is formed in the side wall of the outer barrel 1, an installation box 5 is installed on the inner side wall of the outer barrel 1, the opening side of the installation box 5 is inserted into the rectangular groove 8 and is in sealing fit with the groove wall of the rectangular groove 8, a suction pipe 6 and a sampling assembly 7 are respectively installed on the installation box 5 in a penetrating mode, a liquid outlet end of the suction pipe 6 is in fluid conduction with a storage box 601, the sampling assembly 7 is in sliding fit in the installation box 5, and a ventilation and water blocking assembly 14 is in fluid conduction with the top of the storage box 601 and the liquid outlet end top of the sampling assembly 7; the top of the bottom plate 11 is fixedly connected with a first negative pressure component 12 and a second negative pressure component 13, the suction end of the first negative pressure component 12 is in fluid communication with the air outlet end of the ventilation water-blocking component 14 at the top of the storage box 601 through a hose, and the suction end of the second negative pressure component 13 is in fluid communication with the air outlet end of the ventilation water-blocking component 14 at the top of the liquid outlet end of the sampling component 7 through a hose; the side wall of the operation shaft 4 is fixedly connected with a cam driving block 10, the driving end of the cam driving block 10 is in driving connection with one end of the sampling assembly 7, which is close to the operation shaft 4, and the operation shaft 4, the cam driving block 10 and the sampling assembly 7 are arranged, so that the arc-shaped door 9 can be controlled to be opened and the sampling assembly 7 can be extended out during sampling by rotating the operation shaft 4, and the operation is simple and quick; when inserting the deposit, arc door 9 closes and sampling assembly 7 is in the shrink state, can avoid impurity to get into in the installation box 5 to reduce the resistance when inserting the deposit, and when sampling, sampling assembly 7 inserts in the deposit, can improve sampling efficiency.
As shown in fig. 3 and fig. 4, the suction pipe 6 and the sampling assembly 7 are located on the same cross section of the outer barrel 1, the sampling assembly 7 is arranged along the radial direction of the outer barrel 1, a vertical partition 15 is arranged between the suction pipe 6 and the sampling assembly 7 along the height direction of the outer barrel 1, the side wall of the vertical partition 15 is in sealing fit with the inner side wall of the installation box 5, the installation box 5 is divided into two mutually independent spaces by the vertical partition 15, the installation box 5 can be divided into two independent spaces and matched with the suction pipe 6, in the initial sampling stage, the arc-shaped door 9 is opened to a certain angle by controlling the operation shaft 4, a certain disturbance is caused to the sediment, a certain trouble is caused to the subsequent test by direct sampling, the turbid water can be pumped away by the suction pipe 6 and the storage box 601, so that the degree of sampling is improved, the turbid water cannot flow to the assembly 7, the number of the sampling assembly is ensured to be polluted by the two adjacent side walls of the installation box 7, the three sampling assembly 7 is ensured, the three sampling assemblies are respectively arranged along the two sides of the partition 5, and the two sides of the sampling assembly 6 are respectively, the partition 16 is fixedly arranged between the two side walls of the sampling assembly 7 and the two adjacent to the partition 5; the inner wall of the outer barrel 1 is provided with a sliding groove along the circumferential direction of the inner wall, the sliding groove penetrates through the rectangular groove 8, an arc-shaped door 9 is in sliding fit in the sliding groove, the area of the arc-shaped door 9 is larger than that of the rectangular groove 8, the side wall surface of the opening of the installation box 5 and one side of the vertical partition plate 15 are in sealing sliding fit with the side wall surface of the arc-shaped door 9, a driving rod 18 is fixedly connected to the side wall of the arc-shaped door 9, and the other end of the driving rod 18 is fixedly connected with the side wall of the operation shaft 4.
As shown in fig. 7, the sampling assembly 7 includes a sampling tube 708 and a pull rod 705, the sampling tube 708 penetrates through the mounting box 5, the pull rod 705 is coaxially and fixedly connected to one end of the sampling tube 708, which is close to the operation shaft 4, an insertion rod 706 is fixedly connected to the other end of the pull rod 705, a limiting block 707 is fixedly connected to the other end of the insertion rod 706, a filter plate 701 is in sealing fit with the middle part in the sampling tube 708, rubber plugs 703 are provided on two sides of the filter plate 701 on the tube wall of the sampling tube 708, a liquid inlet 704 is provided on one end of the sampling tube 708, which is far away from the operation shaft 4, a rubber plate 702 is attached to the inner side wall of the sampling tube 708, the rubber plate 702 is in sealing fit to the liquid inlet 704, and one side of the rubber plate 702 is fixedly connected to the inner side wall of the sampling tube 708. The breathable water blocking assembly 14 is mounted on top of the sampling tube 708 and is in fluid communication with the sampling tube 708.
As shown in fig. 5 and 6, the cam driving block 10 includes an arc 101, the concave side of the arc 101 is fixedly connected with the side wall of the operation shaft 4, the upper portion and the lower portion of the convex side wall of the arc 101 are fixedly connected with a supporting plate 102, the other side of the supporting plate 102 is fixedly connected with a guide plate 103, two opposite side wall surfaces of the guide plate 103 are close to each other, the distance between the two guide plates 103 is equal to the diameter of the insertion rod 706, the length of the insertion rod 706 is greater than the thickness of the guide plate 103, the insertion rod 706 is inserted into a gap between the two guide plates 103, a limiting block 707 and the insertion rod 706 are connected with an end wall surface and an inner side wall surface of the guide plate 103, one end wall surface of the pull rod 705 and an outer side wall surface of the guide plate 103 are connected, by setting the cam driving block 10, the parallel section 104 can ensure that the sampling assembly 7 cannot displace when the arc door 9 is opened to pump away a turbid water body, the sampling assembly 105 can be prevented from colliding, and the sampling assembly 7 can be driven to stretch out or be convenient for sampling assembly 7 to be driven.
As shown in fig. 6, the guide plate 103 includes a parallel section 104 and a driving section 105, where thicknesses of the parallel section 104 and the driving section 105 are equal, the parallel section 104 and the driving section 105 are in smooth transition connection, radial distances from any point position of an inner sidewall of the parallel section 104 to an axis of the operating shaft 4 are equal, and radial distances from the inner sidewall of the driving section 105 to the axis of the operating shaft 4 are equal: gradually increasing from an end closer to the parallel section 104 to an end farther from the parallel section 104; in the rotational direction in which the cam driving block 10 drives the sampling assembly 7 away from the operating shaft 4: the parallel section 104 is located in front of the drive section 105; as shown in fig. 2 and 6, on the same cross section, an included angle B formed by two ends of the parallel section 104 and the axis of the operation shaft 4 is equal to an included angle a formed by the side wall of the installation box 5 on the side where the suction pipe 6 is installed and the vertical partition 15 and the axis of the operation shaft 4.
As shown in fig. 8, the ventilation water-blocking component 14 includes a closed tube 141, a floating ball 142, a liquid storage tank 144 and a connecting tube 145, wherein the top end and the bottom end of the inner wall of the closed tube 141 are concave spherical surfaces with the same diameter as the floating ball 142, the floating ball 142 is movably disposed in the closed tube 141, an air outlet 143 is formed below the side wall of the closed tube 141, the minimum linear distance from the air outlet 143 to the bottom end of the inner wall of the closed tube 141 is greater than the radius of the floating ball 142, an air vent is formed on the top end of the inner wall of the closed tube 141, the liquid storage tank 144 is fixed on the side wall of the closed tube 141, the closed tube 141 is in fluid conduction with the liquid storage tank 144 through the air vent, the air vent is located above the side wall of the liquid storage tank 144, and the connecting tube 145 is in fluid conduction with the top of the liquid storage tank 144; the bottom end of the closed tube 141 of the ventilation and water-blocking component 14 above the sampling component 7 is vertically inserted into the tube wall of the sampling tube 708, and the air outlet 143 is in fluid communication with the sampling tube 708; the bottom end of the closed tube 141 of the ventilation and water-blocking component 14 positioned at the top of the storage box 601 is vertically inserted into the top of the storage box 601, and the air outlet 143 is in fluid conduction with the storage box 601, so that when the storage box 601 or the sampling tube 708 is filled with liquid, sampling can be automatically stopped, liquid can be prevented from entering the negative pressure component, the running stability of equipment is improved, and even if part of liquid flows out, the liquid can be collected in the liquid storage box 144, and the protection is improved.
As shown in fig. 9 and 10, the structures of the first negative pressure component 12 and the second negative pressure component 13 are the same, the first negative pressure component 12 includes a piston cylinder 121, a piston 122 and a piston rod 123, the piston 122 is in sealing fit in the piston cylinder 121, the piston rod 123 is coaxially disposed in the piston cylinder 121, the top end of the piston rod 123 is fixedly connected with the bottom end of the piston 122, a supporting frame 125 is fixedly connected in the piston cylinder 121, the bottom end of the piston rod 123 passes through the supporting frame 125 and is fixedly connected with a fixing block 126, a tension spring 124 is sleeved on the piston rod 123, one end of the tension spring 124 is fixedly connected with the bottom of the piston 122, the other end of the tension spring 124 is fixedly connected with the top of the supporting frame 125, a stop block 127 is fixedly connected on the side wall of the fixing block 126 along the radial direction of the piston cylinder 121, and a transverse slot 128 is formed on the side wall of the piston cylinder 121 at a position corresponding to the stop block 127; the side wall of the operation shaft 4 is fixedly connected with a movable block 17, the movable block 17 is clamped into a transverse groove 128 of the side wall of the piston cylinder 121 of the first negative pressure component 12, and the bottom wall of the stop block 127 is lapped on the top of the movable block 17; the top end of the piston cylinder 121 of the first negative pressure component 12 is in fluid communication with the connecting pipe 145 of the ventilation and water-blocking component 14 at the top of the storage box 601 through a hose; the side wall of the sampling tube 708 is fixedly connected with a baffle 19, the baffle 19 is fixedly connected with a plug pin 20, the plug pin 20 is inserted into a transverse groove 128 of the side wall of the piston cylinder 121 of the second negative pressure component 13 and is propped against the bottom of the stop block 127, and by arranging the first negative pressure component 12 and the movable block 17, the first negative pressure component 12 can be synchronously started when the operation shaft 4 is rotated, so that suction is performed; the opening of the second negative pressure component 13 is controlled by the sampling component 7, and the movement of the sampling component 7 is controlled by the driving section 105, so that when the first negative pressure component 12 is opened, the second negative pressure component 13 is closed, and the opening of the arc door 9, the extension of the sampling component 7 and the opening of the second negative pressure component 13 can be realized only by continuously rotating the operation shaft 4, and the three components are coordinated and matched, so that the operation steps of sampling personnel are reduced, and the sampling is facilitated; the first negative pressure component 12 and the second negative pressure component 13 are purely mechanical mechanisms, no electric control component participates, and the stability of operation can be greatly improved for long-time immersion in water for sampling, so that the smooth proceeding of sampling is ensured; the sampling tube 708 is divided into two sections by the filter plate 701, and when sampling is performed, filtering can be realized, and gap water with certain impurities and pure gap water can be obtained, so that extraction can be directly performed without secondary separation during subsequent experiments.
Working principle: when the device is used, the whole device is vertically inserted into sediment downwards, then the operation shaft 4 is rotated to a certain angle, the parallel section 104 of the cam driving block 10 is connected with the sampling assembly 7, the sampling assembly 7 does not move, the operation shaft 4 drives the arc door 9 to open through the driving rod 18 to expose the suction pipe 6 positioned in the mounting box 5, the movable block 17 is synchronously driven to rotate due to the rotation of the operation shaft 4, the stop block 127 of the first negative pressure assembly 12 loses support along with the rotation of the movable block 17, the tension spring 124 contracts to drive the piston 122 to move downwards to form negative pressure, the storage box 601 is sucked, turbid gap water is sucked into the storage box 601 through the suction pipe 6, when the storage box 601 is filled with water, as shown in fig. 8, the water enters the sealing pipe 141 through the air outlet 143, the floating ball is upwards moved due to the water density which is greater than the air density, then the air vent is blocked under the top movement of the water, the air vent is closed, even if a small amount of air vent is passed, the air vent is stored in the storage box 144, and the air vent cannot enter the first negative pressure assembly 12;
When turbid gap water is pumped away, the operation shaft 4 is continuously rotated by the band-pass cam driving block 10, as shown in fig. 6, at this time, the driving section 105 is connected with the sampling assembly 7, the outer side wall surface of the driving section 105 pushes against the end part of the pull rod 705, so that the sampling tube 708 is driven to extend outwards, the arc door 9 is synchronously opened to expose the end part of the sampling tube 708, when the arc door 9 is completely opened, the end part of the sampling tube 708 is inserted into sediment, as shown in fig. 4, simultaneously, due to the movement of the sampling tube 708, the baffle 19 is driven to move, the plug pin 20 is pulled to move, the stop block 127 of the second negative pressure assembly 13 is enabled, the sampling tube 708 is sucked into the sampling tube 708, the gap water is filtered through the filter plate 701, and when the sampling tube 708 is fully filled with water, the ventilation assembly 14 above the sampling tube 708 blocks the water according to the same principle, and the collection is completed;
After the collection is completed, the operation shaft 4 is reversely rotated, the device is pulled out, the operation shaft 4 is forwardly rotated again after the device is transported to a laboratory, the arc-shaped plate 101 is completely opened, the sampling tube 708 is exposed, then the operation shaft 4 is continuously rotated, the insertion rod 706 is separated from the gap between the guide plates 103, then the ventilation water blocking component 14 positioned at the top of the sampling tube 708 is pulled out, the sampling tube 708 is pulled out outwards, and a pore water sample is conveniently taken out.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While the obvious variations or modifications which are extended therefrom remain within the scope of the claims of this patent application.
Claims (8)
1. The pore water collection device in soil is characterized by comprising an outer barrel (1), a top cover (2) and a conical barrel (3), wherein the top cover (2) is fixedly connected to the top end of the outer barrel (1), the top of the conical barrel (3) is fixedly connected with the bottom end of the outer barrel (1), an operation shaft (4) is coaxially arranged in the outer barrel (1), the top end of the operation shaft (4) penetrates out of the top cover (2) and is rotationally connected with the top cover (2), a bottom plate (11) is rotationally connected to the bottom end of the operation shaft (4), and the bottom plate (11) is fixedly connected to the top of the conical barrel (3); rectangular grooves (8) are formed in the side wall of the outer barrel (1), an installation box (5) is arranged on the inner side wall of the outer barrel (1), the opening side of the installation box (5) is inserted into the rectangular grooves (8) and is in sealing fit with the groove walls of the rectangular grooves (8), a suction pipe (6) and a sampling assembly (7) are respectively and penetratingly arranged on the installation box (5), a storage box (601) is in fluid conduction with the liquid outlet end of the suction pipe (6), the sampling assembly (7) is in sliding fit with the installation box (5), and a ventilation water-blocking assembly (14) is in fluid conduction with the top of the storage box (601) and the liquid outlet end top of the sampling assembly (7); the top of the bottom plate (11) is fixedly connected with a first negative pressure component (12) and a second negative pressure component (13), the suction end of the first negative pressure component (12) is in fluid conduction with the air outlet end of the ventilation water-blocking component (14) at the top of the storage box (601) through a hose, and the suction end of the second negative pressure component (13) is in fluid conduction with the air outlet end of the ventilation water-blocking component (14) at the top of the liquid outlet end of the sampling component (7) through a hose; the side wall of the operation shaft (4) is fixedly connected with a cam driving block (10), and the driving end of the cam driving block (10) is in driving connection with one end, close to the operation shaft (4), of the sampling assembly (7).
2. The pore water collection device in soil according to claim 1, wherein the suction pipe (6) and the sampling assembly (7) are positioned on the same cross section of the outer barrel (1), the sampling assembly (7) is arranged along the radial direction of the outer barrel (1), a vertical partition plate (15) is arranged between the suction pipe (6) and the sampling assembly (7) along the height direction of the outer barrel (1), the side wall of the vertical partition plate (15) is in sealing fit with the inner side wall of the installation box (5), and the installation box (5) is divided into two mutually independent spaces by the vertical partition plate (15); the utility model discloses a motor control device for a motor control device, including urceolus (1) and rectangle groove (8), the section of thick bamboo wall of urceolus (1) is interior along its circumference has seted up the sliding tray, just the sliding tray passes rectangle groove (8), sliding fit has arc door (9) in the sliding tray, the area of arc door (9) is greater than the area of rectangle groove (8), the opening lateral wall face of installation box (5) with one side of perpendicular baffle (15) all with the inside wall face sealing sliding fit of arc door (9), fixedly connected with actuating lever (18) on the inside wall of arc door (9), the other end of actuating lever (18) with the lateral wall fixed connection of operating shaft (4).
3. The pore water collection device in soil according to claim 1, wherein the sampling assembly (7) comprises a sampling tube (708) and a pull rod (705), the sampling tube (708) penetrates through the installation box (5), the pull rod (705) is coaxially and fixedly connected to one end of the sampling tube (708) close to the operation shaft (4), an inserting rod (706) is fixedly connected to the other end of the pull rod (705), a limiting block (707) is fixedly connected to the other end of the inserting rod (706), a filter plate (701) is in sealing fit with the middle part in the sampling tube (708), rubber plugs (703) are arranged on two sides of the wall of the sampling tube (708) located on the filter plate (701), a liquid inlet (704) is formed in one end of the sampling tube (708) away from the operation shaft (4), a rubber plate (702) is attached to the inner side wall of the sampling tube (708), the rubber plate (702) is sealed to the liquid inlet (704), and one side of the sampling tube (702) is fixedly connected with the inner side wall (708); the vent-water block assembly (14) is mounted on top of the sampling tube (708) and is in fluid communication with the sampling tube (708).
4. A device for collecting pore water in soil according to claim 3, wherein the cam driving block (10) comprises an arc plate (101), the concave side of the arc plate (101) is fixedly connected with the side wall of the operation shaft (4), the upper part and the lower part of the convex side wall of the arc plate (101) are fixedly connected with a supporting plate (102), the other side of the supporting plate (102) is fixedly connected with a guide plate (103), the opposite side wall surfaces of the two guide plates (103) are close to each other, the distance between the two guide plates (103) is equal to the diameter of the insertion rod (706), the length of the insertion rod (706) is larger than the thickness of the guide plate (103), the insertion rod (706) is inserted into a gap between the two guide plates (103), one end wall surface of the limiting block (707) is connected with the insertion rod (706) and the inner side wall surface of the guide plate (103) is lapped, and the space between one end wall surface of the pull rod (705) and the outer side wall surface of the guide plate (103) is lapped.
5. The pore water collection device in soil according to claim 4, wherein the guide plate (103) comprises a parallel section (104) and a driving section (105), the thickness of each part of the parallel section (104) and the thickness of each part of the driving section (105) are equal, the parallel section (104) and the driving section (105) are in smooth transition connection, the radial distance from any point position of the inner side wall of the parallel section (104) to the axis of the operation shaft (4) is equal, and the radial distance from the inner side wall of the driving section (105) to the axis of the operation shaft (4) is equal: gradually increasing from an end closer to the parallel section (104) to an end further from the parallel section (104); in a rotational direction in which a cam drive block (10) drives the sampling assembly (7) away from the operating shaft (4): -the parallel section (104) is located in front of the drive section (105); on the same cross section, the included angle formed by the two ends of the parallel section (104) and the axis of the operation shaft (4) is equal to the included angle formed by the side wall of the installation box (5) on one side of the suction pipe (6) and the vertical partition plate (15) and the axis of the operation shaft (4).
6. The pore water collection device in soil according to claim 3, wherein the ventilation water blocking component (14) comprises a closed tube (141), a floating ball (142), a liquid storage tank (144) and a connecting tube (145), the top end and the bottom end of the inner wall of the closed tube (141) are concave spherical surfaces with the same diameter as the floating ball (142), the floating ball (142) is movably arranged in the closed tube (141), an air outlet (143) is formed below the side wall of the closed tube (141), the minimum linear distance from the air outlet (143) to the bottom end of the inner wall of the closed tube (141) is larger than the radius of the floating ball (142), an air port is formed in the top end of the inner wall of the closed tube (141), the liquid storage tank (144) is fixed on the side wall of the closed tube (141), the closed tube (141) is in fluid communication with the liquid storage tank (144) through the air port, the top of the liquid storage tank (144) is in fluid communication with the connecting tube (145); the bottom end of a closed tube (141) of a ventilation water-blocking assembly (14) above the sampling assembly (7) is vertically inserted into the tube wall of the sampling tube (708), and the air outlet (143) is in fluid communication with the sampling tube (708); the bottom end of a closed pipe (141) of the ventilation and water blocking component (14) positioned at the top of the storage box (601) is vertically inserted into the top of the storage box (601), and the air outlet (143) is in fluid communication with the storage box (601).
7. The pore water collection device in soil according to claim 6, wherein the first negative pressure component (12) and the second negative pressure component (13) have the same structure, the first negative pressure component (12) comprises a piston cylinder (121), a piston (122) and a piston rod (123), the piston (122) is in sealing fit in the piston cylinder (121), the piston rod (123) is coaxially arranged in the piston cylinder (121), the top end of the piston rod (123) is fixedly connected with the bottom end of the piston (122), a supporting frame (125) is fixedly connected in the piston cylinder (121), the bottom end of the piston rod (123) passes through the supporting frame (125) and is fixedly connected with a fixing block (126), one end of the tension spring (124) is fixedly connected with the bottom of the piston (122), the other end of the tension spring (124) is fixedly connected with the top of the supporting frame (125), the side wall of the fixing block (126) is fixedly connected with a stop block (127) along the radial direction of the piston cylinder (121), and the stop block (127) is correspondingly provided with the stop block (121); a movable block (17) is fixedly connected to the side wall of the operation shaft (4), the movable block (17) is clamped into a transverse groove (128) of the side wall of the piston cylinder (121) of the first negative pressure assembly (12), and the bottom wall of the stop block (127) is lapped on the top of the movable block (17); the top end of a piston cylinder (121) of the first negative pressure component (12) is in fluid communication with a connecting pipe (145) of the ventilation water-blocking component (14) at the top of the storage box (601) through a hose; the side wall of the sampling tube (708) is fixedly connected with a baffle plate (19), the baffle plate (19) is fixedly connected with a plug pin (20), and the plug pin (20) is inserted into a transverse groove (128) on the side wall of the piston cylinder (121) of the second negative pressure component (13) and is propped against the bottom of the stop block (127).
8. The pore water collection device in soil according to claim 2, wherein a handle is fixedly connected to the top end of the side wall of the operation shaft (4); the number of the sampling assemblies (7) is two or more than two, the two or more than two sampling assemblies (7) are arranged along the height direction of the installation box (5), a diaphragm plate (16) is arranged between every two adjacent sampling assemblies (7), and two sides of the diaphragm plate (16) are fixedly connected with the side wall of the vertical diaphragm plate (15) and the inner side wall of the installation box (5) respectively.
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| CN116448493B (en) * | 2023-06-16 | 2023-09-12 | 交通运输部天津水运工程科学研究所 | Underwater sediment sample collecting device |
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| CN111855312A (en) * | 2020-07-31 | 2020-10-30 | 中国科学院南京地理与湖泊研究所 | Portable sediment profile gap water in-situ rapid sampling device |
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| CN211668816U (en) * | 2020-03-12 | 2020-10-13 | 四川省兴冶岩土工程检测有限责任公司 | Self-made soil collector |
| CN111595611B (en) * | 2020-05-13 | 2021-11-16 | 中国科学院海洋研究所 | ROV-based deep sea sediment acoustic parameter in-situ detection system and method |
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| CN111855312A (en) * | 2020-07-31 | 2020-10-30 | 中国科学院南京地理与湖泊研究所 | Portable sediment profile gap water in-situ rapid sampling device |
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| Title |
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| 海底沉积物取样的扰动机理研究;秦华伟;陈鹰;顾临怡;;海洋学报(中文版);20070330(02);全文 * |
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