CN202256114U

CN202256114U - Novel permeameter

Info

Publication number: CN202256114U
Application number: CN2011204270162U
Authority: CN
Inventors: 温文富; 王勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-10-27
Filing date: 2011-10-27
Publication date: 2012-05-30
Anticipated expiration: 2021-10-27

Abstract

The utility model relates to a novel permeameter, which belongs to the technical field of the geotechnical test, and comprises a base, wherein the base is provided with two ventilation pipes, one water inlet pipe, a circular groove and a ring groove; the ventilation pipes are communicated to the wall of the circular groove, and a vent port is provided with a ventilation valve; the water inlet pipe is communicated to the bottom part of the circular groove; a first water permeable stone is arranged on the circular groove, a cutting ring is arranged on the first water permeable stone, and the cutting ring is provided with a second water permeable stone; the ring groove is sequentially provided with a first tuber ring, a bushing and a second rubber ring; an upper cover is arranged on the second water permeable stone and the second rubber ring, and t he upper cover is provided with a water outlet pipe; the base and the upper cover are provided with three ears; and the base and the upper cover are fixedly connected with each other through ears via three bolts. The novel permeameter has good sealing effect, can control the water leakage, is simple to operate, and can conveniently, rapidly and effectively execute the permeability test.

Description

A kind of novel permeameter

Technical field

The utility model relates to a kind of permeameter, is used for the soil test technique field.

Background technology

Mostly the permeameter that is used for soil test at present, loam cake are to have only a point of fixity pressing, and it is good inadequately to seal, and often leaks in the process of the test; And difficult in operating process, need to use bigger strength just can tighten.In addition, mostly base is to have only a water inlet pipe and each design form in a side of gas outlet, is unfavorable for the front exhaust that experimentizes like this, can cause test findings not accurate enough.

Summary of the invention

Good inadequately for overcoming existing permeameter sealing, to leak easily, operation is than shortcomings such as difficulty and exhaust are not thorough; The utility model provides a kind of novel permeameter, and this permeameter is not only operated simpler, can keep good sealing effectiveness; And help testing front exhaust, to obtain accurate result.

The utility model solves the technical scheme that its technical matters adopted: a kind of permeameter, comprise base, and said base is provided with 2 gas outlets, 1 water inlet pipe and circular groove, annular groove; Said gas outlet is communicated to the circular groove wall, and exhausr port is provided with vent valve; Said water inlet pipe is communicated to the circular groove bottom; Place first permeable stone on the said circular groove, place cutting ring on said first permeable stone, place second permeable stone on the said cutting ring; Place first rubber band, sleeve, second rubber band on the said annular groove successively; Said second permeable stone and place loam cake above second rubber band is covered with a rising pipe on said; Said base and loam cake all are provided with 3 ears, and each ear is a semicircle, and the line angle in the center of circle and base and the loam cake center of circle all is 120 °; Said base and loam cake are connected fixing through ear separately with bolt.

The thick 25mm of above-mentioned base, its diameter are 102mm, its annular groove overall diameter 82mm, circular groove diameter 62mm; 3 ears of base all are that diameter is the semicircle of 40mm, the diameter of bolt 10mm on the ear, and itself and base cylindrical are tangent; The high 40mm of above-mentioned sleeve, thick 10mm, external diameter are 82mm; The thick 23mm of above-mentioned loam cake, its diameter also are 102mm, and 3 ears also all are that diameter is the semicircle of 40mm on its limit, the diameter of bolt 10mm on the ear, and itself and loam cake cylindrical are tangent; The high 78mm of above-mentioned permeameter.

The beneficial effect of the utility model is, can be when carrying out permeability test exhaust thorough, reach good sealing effectiveness, prevent to leak, simple to operate, convenient test is fast and effeciently carried out.

Description of drawings

Fig. 1 is the utility model structural representation

Fig. 2 is the structural representation of the utility model base

Fig. 3 is the utility model loam cake synoptic diagram

1. bolts among the figure, 2. loam cake, 3. rising pipe, 4. second permeable stone, 5. second rubber band; 6. cutting ring, 7. sleeve, 8. first rubber band, 9. gas outlet, 10. water inlet pipe; 11. base, 12. annular grooves, 13. circular grooves, 14. circular groove walls, 15. vent valves; 16. first permeable stone, 17. base ears, 18. loam cake ears, 19. bolt of lower base holes, 20. loam cake bolts hole.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is further specified.

A kind of permeameter comprises base 11, and said base 11 is provided with 9,1 water inlet pipe 10 of 2 gas outlets and circular groove 13, annular groove 12; Said gas outlet 9 is communicated to circular groove wall 14, and gas outlet 9 is provided with vent valve 15; Said water inlet pipe 10 is communicated to circular groove 13 bottoms; Place first permeable stone 16 on the said circular groove 13, place cutting ring 6 on said first permeable stone 16, place second permeable stone 4 on the said cutting ring 6; Place first rubber band 8, sleeve 7, second rubber band 5 on the said annular groove 12 successively; Said second permeable stone 4 and second rubber band, the 5 top loam cakes 2 of placing, said loam cake 2 is provided with a rising pipe 3; Said base 11 is respectively equipped with 3 ears 17 (with 18) with loam cake 2, and ear is a semicircle, and the line angle in its center of circle and base 11 and loam cake 2 centers of circle all is 120 °; Said base 11 and loam cake 2 are connected fixing through ear (17 and 18) separately with 3 bolts 1.Above-mentioned base 11 thick 25mm, its diameter is 102mm, its annular groove 12 overall diameter 82mm, circular groove 13 diameter 62mm; 3 ears 17 of base all are that diameter is the semicircle of 40mm, the bolt hole 19 diameter 10mm on the ear 17, and itself and base 11 cylindricals are tangent; Above-mentioned sleeve 7 high 40mm, thick 10mm, external diameter are 82mm; Above-mentioned loam cake 2 thick 23mm, its diameter also is 102mm, 3 ears 18 also all are that diameter is the semicircle of 40mm on its limit, the bolt hole 20 diameter 10mm on the ear 18, itself and loam cake 2 cylindricals are tangent; The high 88mm of above-mentioned permeameter external form.

The operation steps of the utility model is: the first, according to the soil test method for making sample, smear vaseline at the cutting ring inwall earlier, and utilize cutting ring to cut the test soil sample again; The second, prepare two and the isodiametric qualitative filter paper of soil sample, after bedewing filter paper, the service test water is attached to the end face and the bottom surface of the test soil sample for preparing; The 3rd, after the cutting ring outer wall is smeared vaseline, soil sample is put into sleeve gently, whole then being placed on the base of completing first permeable stone and first rubber band; The 4th, after covering second rubber band and second permeable stone on the sleeve respectively, cover loam cake, through tighting a bolt permeameter is sealed; The 5th, close water inlet pipe mouth tongs on the permeameter base, open the water inlet threeway of scale one end of measuring head, test water is got into measure the test tube certain altitude, close T-valve then; The 6th, open two vent valves of base, open base water inlet pipe mouth tongs again; Flow out by gas outlet after making test water get into the permeameter kerve; Repeat the 5th step, after the test water that gas outlet flows out does not contain bubble, quick closedown vent valve and water inlet pipe mouth tongs; The 7th, repeat the 5th step, open the water inlet pipe mouth tongs, the soil sample in the inner cutting ring of permeameter is from bottom to top reached capacity; At last; After treating the fluid stable of the water that rising pipe flows out, repeating step five, begin to measure and record start head and end of a period head and between four times flowing through; After measuring water temperature and other correlation test parameters, calculate the infiltration coefficient of soil sample by penetration formula.

Claims

1. a novel permeameter comprises base, and said base is provided with 2 gas outlets, 1 water inlet pipe and circular groove, annular groove; Said gas outlet is communicated to the circular groove wall, and exhausr port is provided with vent valve, it is characterized in that: said water inlet pipe is communicated to the circular groove bottom; Place first permeable stone on the said circular groove, place cutting ring on said first permeable stone, place second permeable stone on the said cutting ring; Place first rubber band, sleeve, second rubber band on the said annular groove successively; Said second permeable stone and place loam cake above second rubber band is covered with a rising pipe on said; Said base and loam cake all are provided with 3 ears, and each ear is a semicircle, and the line angle in the center of circle and base and the loam cake center of circle all is 120 °; Said base and loam cake are connected fixing through ear separately with 3 bolts.

2. require described novel permeameter according to right 1, it is characterized in that: the thick 25mm of base, its diameter are 102mm, its annular groove overall diameter 82mm, circular groove diameter 62mm; 3 ears of base all are that diameter is the semicircle of 40mm, the diameter of bolt 10mm on the ear, and itself and base cylindrical are tangent; The high 40mm of sleeve, thick 10mm, external diameter are 82mm; The thick 23mm of loam cake, its diameter also are 102mm, and 3 ears also all are that diameter is the semicircle of 40mm on its limit, the diameter of bolt 10mm on the ear, and itself and loam cake cylindrical are tangent; The high 78mm of above-mentioned permeameter.