CN201859082U - Piston-type clayey soil pore water mechanical squeezing instrument - Google Patents
Piston-type clayey soil pore water mechanical squeezing instrument Download PDFInfo
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- CN201859082U CN201859082U CN2010206077324U CN201020607732U CN201859082U CN 201859082 U CN201859082 U CN 201859082U CN 2010206077324 U CN2010206077324 U CN 2010206077324U CN 201020607732 U CN201020607732 U CN 201020607732U CN 201859082 U CN201859082 U CN 201859082U
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model discloses a piston-type clayey soil pore water mechanical squeezing instrument which comprises a support seat, a press filtering device, a water sample collection bottle and a pressure applying device, wherein the press filtering device at least comprises a hollow column used for containing a soil sample; the upper part and the lower part of the hollow column are respectively connected with a piston and a base; the base is provided with a water guide hole and a water guide groove; the water guide hole is communicated with the water sample collection bottle by a water guide pipe; a filter screen and a filter membrane are arranged between the base and the soil sample; the pressure applying device at least comprises a lever mechanism and a double-rod bracket; a cross beam of the double-rod bracket is connected with the piston by screws; and one end of a lever in the lever mechanism is connected with the support seat by a bearing A and connected with two rods of the double-rod bracket by a bearing B, and the other end of the lever is provided with a balance weight device. The piston-type clayey soil pore water mechanical squeezing instrument is simple in operation and low in cost, realizes continuous pressure application and does not cause pollution for the water sample.
Description
Technical field
The utility model relates to a kind of mechanical expression instrument, is specifically related to a kind of piston type cohesive soil pore water mechanical expression instrument that is used to test hole water constituent and content.
Background technology
Milling process is an effective ex situ method of testing of extracting the cohesive soil pore water.Traditional squeezer mainly is made up of filter-pressing device and oil pressure (pneumatics) pressure source at present, and driven by motor oil pump (air compressor machine) work is delivered to soil sample with pressure by piston, and pore water is collected in extruding.Pressure limit is 5MPa～36.6MPa, and pressure reaches predetermined high value motor and quits work, and the high pressure slow release drops to predetermined low value motor and restarts pressurization.Its shortcoming is that the loss of electric machine is big, and high pressure can not continue, and for the low water content cohesive soil, after pressure discharged, pore water flowed and stops or resilience, causes pore water can not squeeze or the water yield can not satisfy testing requirement.Filter-pressing device is made up of soil sample container and filter paper, permeable stone usually, but the filter paper rapid wear causes pore water to pollute easily.
Therefore, pressure is continued and avoid pore water to pollute, significant to effective extraction pore water; Secondly, reduce cost, reducing loss is the importance that instrument can be promoted the use of.
Summary of the invention
The purpose of this utility model is to remedy existing cohesive soil pore water squeezing instrument cost height, loss is big, high pressure can not continue and the defective of water sample vulnerable to pollution, provide a kind of simple to operate, cost is low, can continue to exert pressure and free of contamination piston type cohesive soil pore water mechanical expression instrument.
Realize that the technical scheme that the utility model purpose is adopted is:
A kind of piston type cohesive soil pore water mechanical expression instrument, at least comprise bearing, filter-pressing device and water sample receiving flask, also comprise device for exerting, described filter-pressing device comprises the hollow posts of a splendid attire soil sample at least, the top of hollow posts is connected with piston by screw, fixedly connected with base in the bottom of hollow posts, the center of base is provided with water-guiding hole, also be provided with some guiding gutters that are communicated with water-guiding hole on it, water-guiding hole is communicated with the water sample receiving flask by aqueduct, base and water sample receiving flask place on the bearing, are provided with screen pack between base and the soil sample, and screen pack is provided with filtering membrane; Described device for exerting comprises leverage and two shaft bar at least, be provided with crossbeam between two bars of two shaft bars, crossbeam is connected with piston by screw, an end of lever is connected with bearing by bearing A in the leverage, also be connected with two bars of two shaft bars by bearing B, the other end of lever is provided with counter weight device.
And guiding gutter is that the center of circle radially distributes with the water-guiding hole.
And guiding gutter is that the center of circle radially distributes with the water-guiding hole, and also being provided with the water-guiding hole is the guiding gutter that the center of circle distributes ringwise.
And piston is provided with O-ring seal.
And base is provided with O-ring seal.
And lever is provided with counterbalance weight with the end that two shaft bars are connected.
Compared with prior art, advantage of the present utility model is as follows:
The piston type cohesive soil pore water mechanical expression instrument that the utility model provides is not only simple to operate, and cost is low, and can realize continuing to exert pressure, all applicable from high-moisture to the collection of low water content cohesive soil pore water, the collection water yield is big, and is pollution-free, can satisfy different testing requirements.This instrument transformation is convenient, can promote the use of, and has broad application prospects.
Description of drawings
Fig. 1 is the structural representation of piston type cohesive soil pore water mechanical expression instrument of the present utility model;
Fig. 2 is the structural representation of filter-pressing device in the piston type cohesive soil pore water mechanical expression instrument;
Among the figure, 1: piston; 2: O-ring seal; 3: hollow posts; 4: screen pack; 5: filtering membrane; 6: base; 7: water-guiding hole; 8: guiding gutter; 9: aqueduct; 10: crossbeam; 11: two shaft bars; 12: lever; 13: the water sample receiving flask; 14: bearing A; 15: bearing B; 16: bearing; 17: counter weight device; 18: counterbalance weight.
Embodiment
Below by the drawings and specific embodiments the utility model is further described.
As Fig. 1, Fig. 2, piston type cohesive soil pore water mechanical expression instrument of the present utility model mainly is made of bearing 16, filter-pressing device, water sample receiving flask 13 and device for exerting.
Filter-pressing device mainly comprises the hollow posts 3 of a splendid attire soil sample, the top of hollow posts 3 is connected with piston 1 by screw, piston 1 is provided with O-ring seal 2, the bottom of hollow posts 3 is screwed with base 6 and is connected, base 6 is provided with O-ring seal, the center of base 6 is provided with water-guiding hole 7, and the O-ring seal in the present embodiment is an O type circle, and the diameter of water-guiding hole is 2mm.Water-guiding hole 7 is communicated with water sample receiving flask 13 by aqueduct 9, base 6 is provided with some guiding gutters 8 that are communicated with water-guiding hole 7, guiding gutter 8 is that the center of circle radially distributes with water-guiding hole 7 in the present embodiment, also being provided with water-guiding hole 7 is the guiding gutter that the center of circle distributes ringwise, and also can make guiding gutter is center of circle shape distribution in the shape of a spiral with the water-guiding hole.Base 6 and water sample receiving flask 13 place on the bearing 16, are provided with screen pack 4 between base 6 and the soil sample, and screen pack 4 is provided with filtering membrane 5.The aperture of screen pack and filtering membrane is respectively 1mm and 15 μ m in the present embodiment, and the material of employing is teflon.
Device for exerting mainly is made of lever transmission mechanism and two shaft bar 11, be provided with crossbeam 10 between two bars of two shaft bars 11, crossbeam 10 is connected with piston 1 by screw, an end of lever 12 is connected with bearing 16 by bearing A14 in the leverage, this end also is connected with two bars of two shaft bars 11 by bearing B15, and the other end of lever 12 is provided with counter weight device 17.When 17 pairs of levers 12 of counter weight device were exerted pressure, lever 12 drove two shaft bars 11 by bearing B15 and moves downward, and two shaft bars 11 drive pistons 1 move downward exerts pressure to soil sample.Adopt counterweight as counter weight device in the present embodiment, the length of lever 12: bearing B15 is 12: 1 to the distance of fulcrum (being bearing A14).When excessive, support 16 is toppled over to an end that is provided with counter weight device 17 for fear of pressurization, and present embodiment is provided with a counterbalance weight 18 at lever 12 with the end that pair shaft bars 11 are connected.
The operating process of piston type cohesive soil pore water mechanical expression instrument of the present utility model is as follows:
(1) hollow posts 3 is screwed with base 6 is connected, on base 6, place screen pack 4 and filtering membrane 5 successively.Open undisturbed soil sample, oxidized part around scraping off is cut one section earth pillar and is put in the hollow posts 3, connects piston 1, aqueduct 9 and water sample receiving flask 13, places then on the bearing 16.
(2) make lever 12 levels, two shaft bars 11 are vertical with lever 12, with screw crossbeam 10 fixedlyed connected with piston 1.Classification weight application counterweight, every stage pressure is stablized a period of time, after the observation aquifer yield does not have significant change, enters next stage pressure.Along with moving down of piston 1, when lever 12 moves down into maximum displacement, need counterweight is unloaded, lever 12 is maintained an equal level, add weight again and exert pressure.
(3) pore water in the collection water sample receiving flask 13 removes soil sample after collection finishes.Can from lower to upper soil sample be ejected from water-guiding hole 7 air inlets with high pressure gas pipeline by means of air compressor machine when removing soil sample.
Squeezing instrument of the present utility model is according to lever principle the pore water in the soil sample to be squeezed.As fulcrum, big more at the left end applied pressure of lever with bearing A, then the reacting force that bears of the soil body is just big more.Gradable exerting pressure when therefore using this squeezing instrument, when cohesive soil applies next stage pressure again after distortion under the first order pressure is stable, pressure continues to increase, pore water can evenly be squeezed to little space from big space, see through filtering membrane and discharge, avoided directly applying high pressure and discharged again and cause the part pore water to be closed in situation in the soil body from the water-guiding hole of base.
Claims (7)
1. piston type cohesive soil pore water mechanical expression instrument, at least comprise bearing, filter-pressing device and water sample receiving flask, it is characterized in that: also comprise device for exerting, described filter-pressing device comprises the hollow posts of a splendid attire soil sample at least, the top of hollow posts is connected with piston by screw, fixedly connected with base in the bottom of hollow posts, the center of base is provided with water-guiding hole, also be provided with some guiding gutters that are communicated with water-guiding hole on it, water-guiding hole is communicated with the water sample receiving flask by aqueduct, base and water sample receiving flask place on the bearing, are provided with screen pack between base and the soil sample, and screen pack is provided with filtering membrane; Described device for exerting comprises leverage and two shaft bar at least, be provided with crossbeam between two bars of two shaft bars, crossbeam is connected with piston by screw, an end of lever is connected with bearing by bearing A in the leverage, also be connected with two bars of two shaft bars by bearing B, the other end of lever is provided with counter weight device.
2. piston type cohesive soil pore water mechanical expression instrument according to claim 1 is characterized in that: guiding gutter is that the center of circle radially distributes with the water-guiding hole.
3. piston type cohesive soil pore water mechanical expression instrument according to claim 2 is characterized in that: guiding gutter is that the center of circle radially distributes with the water-guiding hole, and also being provided with the water-guiding hole is the guiding gutter that the center of circle distributes ringwise.
4. piston type cohesive soil pore water mechanical expression instrument according to claim 1 is characterized in that: guiding gutter is center of circle shape distribution in the shape of a spiral with the water-guiding hole.
5. piston type cohesive soil pore water mechanical expression instrument according to claim 1, it is characterized in that: piston is provided with O-ring seal.
6. piston type cohesive soil pore water mechanical expression instrument according to claim 1, it is characterized in that: base is provided with O-ring seal.
7. piston type cohesive soil pore water mechanical expression instrument according to claim 1 is characterized in that: lever is provided with counterbalance weight with the end that two shaft bars are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206077324U CN201859082U (en) | 2010-11-16 | 2010-11-16 | Piston-type clayey soil pore water mechanical squeezing instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206077324U CN201859082U (en) | 2010-11-16 | 2010-11-16 | Piston-type clayey soil pore water mechanical squeezing instrument |
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| Publication Number | Publication Date |
|---|---|
| CN201859082U true CN201859082U (en) | 2011-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206077324U Expired - Fee Related CN201859082U (en) | 2010-11-16 | 2010-11-16 | Piston-type clayey soil pore water mechanical squeezing instrument |
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| CN (1) | CN201859082U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901805A (en) * | 2012-09-28 | 2013-01-30 | 中国地质大学（武汉） | Strain type double-faced drainage squeezing instrument for pore water of ground |
| CN103293024A (en) * | 2013-05-10 | 2013-09-11 | 湖南农业大学 | Method and device for rapidly extracting saturation pore water from cement-based material |
| CN104949858A (en) * | 2015-06-25 | 2015-09-30 | 中国地质大学（武汉） | Squeezing instrument |
| CN106512503A (en) * | 2016-12-14 | 2017-03-22 | 新乡市恒星科技有限责任公司 | Small-sized lubricating grease filter device |
| CN106932248A (en) * | 2017-03-02 | 2017-07-07 | 中国地质大学（武汉） | Portable pore water pressure squeezes device |
-
2010
- 2010-11-16 CN CN2010206077324U patent/CN201859082U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901805A (en) * | 2012-09-28 | 2013-01-30 | 中国地质大学（武汉） | Strain type double-faced drainage squeezing instrument for pore water of ground |
| CN102901805B (en) * | 2012-09-28 | 2015-07-22 | 中国地质大学（武汉） | Strain type double-faced drainage squeezing instrument for pore water of ground |
| CN103293024A (en) * | 2013-05-10 | 2013-09-11 | 湖南农业大学 | Method and device for rapidly extracting saturation pore water from cement-based material |
| CN104949858A (en) * | 2015-06-25 | 2015-09-30 | 中国地质大学（武汉） | Squeezing instrument |
| CN106512503A (en) * | 2016-12-14 | 2017-03-22 | 新乡市恒星科技有限责任公司 | Small-sized lubricating grease filter device |
| CN106932248A (en) * | 2017-03-02 | 2017-07-07 | 中国地质大学（武汉） | Portable pore water pressure squeezes device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110608 Termination date: 20131116 |