Novel cutting ring method soil permeability measuring device

Abstract

The utility model relates to a novel cutting ring method soil permeability measuring device which comprises a cutting ring measuring device, a funnel, a measuring cylinder and a bracket, the cutting ring measuring device comprises a cutting ring, a sealing gasket and a clamping ring; the cutting ring comprises an annular cutting edge, an annular wall and a protruding annular edge. The protruding annular edge and the annular cutting edge are arranged at the two ends of the annular wall respectively. The protruding ring edge of each cutting ring is provided with a limiting bayonet, the two cutting rings are vertically arranged, and the protruding ring edge of the upper cutting ring faces the protruding ring edge of the lower cutting ring. The sealing gasket is arranged between the cutting ring on the upper side and the cutting ring on the lower side, and the sealing gasket is horizontally arranged at the limiting bayonets of the two cutting rings; the first limiting bolts are sequentially screwed into the corresponding threaded through holes of the fixed connecting bases in the adjusting clamping rings on the upper side and the corresponding threaded through holes of the fixed connecting bases in the adjusting clamping rings on the lower side, and the upper side cutting ring and the lower side cutting ring are connected in a sealed mode through adjustment of the first limiting bolts and under the action of the sealing gaskets. According to the utility model, lateral loss of soil moisture in an experiment is effectively prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to a novel ring knife method soil permeability determination device belongs to the technical field of soil physics. BACKGROUND

[0002] Soil permeability is a key index for evaluating the risk of water and soil loss. In the terrain undulating areas such as mountains and hills, if the soil permeability is poor, the water is difficult to infiltrate quickly after rainfall, and the surface runoff is easy to form. The strong flow scouring force will wrap a large number of soil particles, and aggravate the water and soil loss. Determining the soil permeability can help to determine the high-risk areas prone to water and soil loss, and plan the measures such as afforestation, building terraces and other soil and water conservation measures, so as to stabilize the soil, protect the land resources, maintain the ecological balance, reduce the sediment accumulation burden of water bodies such as rivers and lakes, and ensure the normal operation of water conservancy facilities.

[0003] At present, the double ring knife method is one of the common experimental methods for determining soil permeability. The method takes undisturbed soil samples by ring knife, and after immersion, the water flow velocity through the unit soil cross section perpendicular to the water flow direction is calculated under the unit water pressure gradient according to Darcy's law, that is, the saturated water conductivity or permeability coefficient of the soil. The advantages are small water storage, simple equipment, easy operation, convenient carrying, etc. At the same time, the disadvantages are also obvious. In the experimental process, it is difficult to determine whether the double ring is perpendicular to the horizontal condition, and the seepage phenomenon between the double rings has an influence on the experimental results.

[0004] Therefore, it is necessary to improve the existing double ring knife method soil permeability determination device according to the existing shortcomings. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the defects of the prior art, and provides a novel ring knife method soil permeability determination device.

[0006] In order to realize the above utility model purposes, the utility model adopts the following technical scheme: a novel ring knife method soil permeability determination device, characterized by comprising a ring knife determination device, a hopper, a measuring cylinder and a support.

[0007] The ring knife determination device comprises a ring knife, a sealing gasket and a snap ring.

[0008] The number of the ring knife is 2, the ring knife comprises a ring-shaped cutting edge, a ring-shaped wall and a convex ring edge, the convex ring edge and the ring-shaped cutting edge are arranged at both ends of the ring-shaped wall respectively, a limiting socket is arranged on the convex ring edge of each ring knife, the two ring knives are arranged vertically, and the convex ring edge of the upper ring knife faces the convex ring edge of the lower ring knife.

[0009] The sealing gasket is arranged between the upper ring knife and the lower ring knife, and is horizontally arranged in the limiting socket of the two ring knives.

[0010] The snap ring comprises two adjusting snap rings, the inner diameter of the adjusting snap ring is smaller than the outer diameter of the convex ring edge, at least two fixed connecting seats are arranged on each adjusting snap ring, and threaded through holes are arranged on the fixed connecting seats; one adjusting snap ring is sleeved on the annular wall of the upper ring cutter, the other adjusting snap ring is sleeved on the annular wall of the lower ring cutter, a first limiting bolt is further arranged, the first limiting bolt is screwed into the threaded through holes of the fixed connecting seats of the upper adjusting snap ring and the fixed connecting seats of the lower adjusting snap ring in sequence, the first limiting bolt is adjusted, and the upper ring cutter is sealingly connected with the lower ring cutter under the action of the sealing gasket;

[0011] The support comprises a base, a vertical support rod, a support rod and a ring cutter limiting snap ring, the vertical support rod is fixed on the base and perpendicular to the base, one end of the support rod is fixed with the vertical support rod, and the other end is fixed with the ring cutter limiting snap ring; the ring cutter measuring device is fixed on the ring cutter limiting snap ring;

[0012] A measuring cylinder is arranged on the base, a funnel is arranged on the measuring cylinder, the inlet of the funnel faces the ring cutter, and the outlet of the funnel faces the inside of the cylinder.

[0013] One end of the support rod connected with the vertical support rod is provided with a support rod limiting snap ring, the support rod limiting snap ring is sleeved on the vertical support rod, a threaded through hole penetrating through the support rod limiting snap ring is arranged on the support rod limiting snap ring, and a limiting bolt is screwed on the threaded through hole; the position of the support rod limiting snap ring on the vertical support rod is adjusted, and the vertical height of the support rod limiting snap ring is adjusted; the limiting bolt is screwed on the threaded through hole and presses the vertical support rod, so that the support rod is fixed with the vertical support rod.

[0014] A threaded hole is arranged on the side wall of the ring cutter limiting snap ring, a second limiting bolt is screwed on the threaded hole, the ring cutter limiting snap ring is sleeved on the ring cutter of the ring cutter measuring device, the second limiting bolt is screwed into the threaded hole of the side wall of the ring cutter limiting snap ring and presses the ring cutter, so that the ring cutter measuring device is fixed on the ring cutter limiting snap ring, the second limiting bolt releases the pressing on the ring cutter, and the ring cutter can move up and down in the ring cutter limiting snap ring and adjust the position.

[0015] The ring cutter limiting snap ring and the support rod are fixedly connected through screwing.

[0016] The part, where the ring cutter limiting snap ring is connected with the support rod, is provided with a connecting seat, a connecting groove is arranged on the connecting seat, and fastening threaded holes are arranged on the upper and lower sides of the connecting groove;

[0017] One end of the support rod connected with the ring cutter limiting snap ring is provided with a locking hole, the support rod is inserted into the connecting groove of the connecting seat; a fastening bolt is further arranged, the fastening bolt is screwed into one fastening threaded hole of the connecting seat, the locking hole and the other fastening threaded hole in sequence and is screwed tightly, so that the ring cutter limiting snap ring and the support rod are fixedly connected through screwing.

[0018] The base is provided with a level meter, and the four feet of the bottom of the base are provided with horizontal adjusting foot stands perpendicular to the base, the base is leveled by the horizontal adjusting foot stands, and whether the base is leveled is observed by the level meter.

[0019] The utility model discloses a simple structure, convenient to use, through the utility model, structure includes ring cutter measuring device, hopper, measuring cylinder, support, support includes base, vertical support rod, support rod, ring cutter limit snap ring, vertical support rod is fixed on the base, and with base vertical, one end of support rod is fixed with vertical support rod, and the other end is fixed with ring cutter limit snap ring, ring cutter measuring device is fixed on ring cutter limit snap ring, hopper is vertically placed on the measuring cylinder, and the measuring cylinder is vertically placed on the support.

[0020] The base is provided with a level meter, and the four feet of the bottom of the base are provided with horizontal adjusting foot stands perpendicular to the base, the base is leveled by the horizontal adjusting foot stands, and whether the base is leveled is observed by the level meter.

[0021] Advantages: compared with prior art, the utility model has the following advantages:

[0022] 1. Prevent lateral water seepage: ring cutter cooperates with sealing gasket and snap ring to effectively prevent lateral loss of soil moisture during experiment and improve experimental accuracy.

[0023] 2. Ensure vertical infiltration: the base is provided with a level meter and a horizontal adjusting foot stand, the base is leveled, and vertical infiltration of water is ensured, further improving experimental accuracy.

[0024] 3. Easy to adjust and fix: the support rod and the vertical support rod can be fixed by the limiting bolt, the ring cutter measuring device is fixed on the ring cutter limit snap ring by the second limiting bolt, and the ring cutter can move up and down and adjust the position in the ring cutter limit snap ring, facilitating experimental operation.

[0025] In summary, the novel ring cutter method soil permeability measuring device can effectively prevent lateral loss of soil moisture during experiment by the cooperation of ring cutter, sealing gasket and snap ring, and at the same time, the horizontal support base is provided with a level meter for adjustment, ensuring vertical infiltration of water and further improving experimental accuracy. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0028] Figure 3 yes Figure 1 Enlarged view at point B in the middle;

[0029] Figure 4 This is a schematic diagram of the structure of a ring cutter in this utility model;

[0030] Figure 5 This is a structural schematic diagram of the ring cutter, sealing gasket, and retaining ring in this utility model;

[0031] Figure 6 This is a schematic diagram of the structure of the two ring cutters connected in this utility model;

[0032] Figure 7 This is a schematic diagram of the adjusting retaining ring in this utility model;

[0033] In the diagram: 1. Ring cutter measuring device; 2. Funnel; 3. Measuring cylinder; 4. Support; 11. Ring cutter; 11-1. Annular cutter edge; 11-2. Annular wall; 11-3. Protruding ring edge; 12. Sealing gasket; 13. Snap ring; 14. Fixed connecting seat; 41. Base; 42. Vertical support rod; 43. Support rod limiting snap ring; 44. Ring cutter limiting snap ring; 45. Support rod; 46. Second limiting bolt; 47. Connecting seat; 48. Fastening bolt; 111. Limiting snap; 131. First limiting bolt; 132. Adjusting snap ring; 411. Level; 412. Horizontal adjusting foot; 431. Limiting bolt. Detailed Implementation

[0034] The present invention will be further described below with reference to the accompanying drawings and descriptions.

[0035] A novel ring cutter method for measuring soil permeability is characterized by comprising a ring cutter measuring device 1, a funnel 2, a measuring cylinder 3, and a support 4; the ring cutter measuring device 1 comprises a ring cutter 11, a sealing gasket 12, and a retaining ring 13.

[0036] The ring cutter 11 consists of two ring cutters, each including an annular cutting edge 11-1, an annular wall 11-2, and a raised annular edge 11-3. The raised annular edge 11-3 and the annular cutting edge 11-1 are respectively located at both ends of the annular wall 11-2. Each ring cutter 11 has a limiting slot 111 on its raised annular edge 11-3. The two ring cutters 11 are arranged vertically, with the raised annular edge 11-3 of the upper ring cutter 11 facing the raised annular edge 11-3 of the lower ring cutter 11.

[0037] The sealing gasket 12 is placed between the upper ring cutter 11 and the lower ring cutter 11, and the sealing gasket 12 is horizontally placed in the limiting slots 111 of the two ring cutters 11; the retaining ring 13 includes two adjusting retaining rings 132, the inner diameter of the adjusting retaining ring 132 is smaller than the outer diameter of the protruding ring edge 11-3, and each adjusting retaining ring 132 is provided with at least two fixed connecting seats 14, and the fixed connecting seats 14 are provided with threaded through holes; one adjusting retaining ring 132 is fitted onto the annular wall 11 of the upper ring cutter 11. 1-2, another adjusting ring 132 is fitted onto the annular wall 11-2 of the lower ring cutter 11, and a first limiting bolt 131 is also provided. The first limiting bolt 131 is screwed into the threaded through hole of the fixed connecting seat 14 in the corresponding upper adjusting ring 132 and the threaded through hole of the fixed connecting seat 14 in the lower adjusting ring 132 in sequence. Adjustment is made by the first limiting bolt 131, and under the action of the sealing gasket 12, the upper ring cutter 11 and the lower ring cutter 11 are sealed together.

[0038] The bracket 4 includes a base 41, a vertical support rod 42, a support rod 45, and a ring cutter limiting ring 44. The vertical support rod 42 is fixed to the base 41 and is perpendicular to the base 41. One end of the support rod 45 is fixed to the vertical support rod 42, and the other end is fixed to the ring cutter limiting ring 44. The ring cutter measuring device 1 is fixed to the ring cutter limiting ring 44. A measuring cylinder 3 is set on the base 41, and a funnel 2 is set on the measuring cylinder 3. The inlet of the funnel 2 faces the ring cutter 11, and the outlet of the funnel 2 faces the inside of the measuring cylinder 3.

[0039] A level 411 is installed on the base 41. All four feet of the base 41 are equipped with leveling feet 412 that are perpendicular to the base 41. The base 41 is leveled by adjusting the leveling feet 412, and the level is observed by the level 411.

[0040] Furthermore, a support rod limiting ring 43 is provided at one end of the support rod 45 that connects to the vertical support rod 42. The support rod limiting ring 43 is fitted onto the vertical support rod 42. A threaded through hole is provided on the support rod limiting ring 43, and a limiting bolt 431 is screwed onto the threaded through hole. By adjusting the position of the support rod limiting ring 43 on the vertical support rod 42, the vertical height of the support rod limiting ring 43 is adjusted. The limiting bolt 431 is screwed into the threaded through hole and presses against the vertical support rod 42, thereby fixing the support rod 45 and the vertical support rod 42.

[0041] Furthermore, a threaded hole is provided on the side wall of the ring cutter limiting retainer 44, and a second limiting bolt 46 is screwed onto the threaded hole. The ring cutter limiting retainer 44 is fitted onto the ring cutter 11 on the ring cutter measuring device 1. The second limiting bolt 46 is screwed into the threaded hole on the side wall of the ring cutter limiting retainer 44 and squeezes the ring cutter 11, so that the ring cutter measuring device 1 is fixed on the ring cutter limiting retainer 44 and the compression of the ring cutter 11 by the second limiting bolt 46 is released. The ring cutter 11 can move up and down and adjust its position within the ring cutter limiting retainer 44.

[0042] Furthermore, the ring cutter limiting retaining ring 44 and the support rod 45 are fixedly connected by bolts. Specifically, a connecting seat 47 is provided at the part where the ring cutter limiting retaining ring 44 and the support rod 45 are connected. The connecting seat has a connecting groove, and fastening threaded holes are provided on the upper and lower sides of the connecting groove. A locking hole is provided at the end where the support rod 45 is connected to the ring cutter limiting retaining ring 44, and the support rod 45 is inserted into the connecting groove of the connecting seat 47. A fastening bolt 48 is also provided. The fastening bolt 48 is screwed into one fastening threaded hole, the locking hole, and the other fastening threaded hole of the connecting seat in sequence and tightened to fix it, so that the ring cutter limiting retaining ring 44 and the support rod 45 are fixedly connected by bolts.

Claims

1. A novel ring sampler method for measuring soil permeability, characterized in that: Includes a ring cutter measuring device (1), a funnel (2), a measuring cylinder (3), and a support (4); The ring cutter measuring device (1) includes a ring cutter (11), a sealing gasket (12), and a retaining ring (13); wherein: The number of ring cutters (11) is 2. Each ring cutter (11) includes an annular cutting edge (11-1), an annular wall (11-2), and a raised annular edge (11-3). The raised annular edge (11-3) and the annular cutting edge (11-1) are respectively located at both ends of the annular wall (11-2). Each ring cutter (11) has a limiting slot (111) on its raised annular edge (11-3). The two ring cutters (11) are arranged vertically up and down, with the raised annular edge (11-3) of the upper ring cutter (11) facing the raised annular edge (11-3) of the lower ring cutter (11). The sealing gasket (12) is placed between the upper ring cutter (11) and the lower ring cutter (11), and the sealing gasket (12) is placed horizontally at the limiting slot (111) of the two ring cutters (11). The retaining ring (13) includes two adjusting retaining rings (132). The inner diameter of the adjusting retaining ring (132) is smaller than the outer diameter of the protruding ring edge (11-3). Each adjusting retaining ring (132) is provided with at least two fixed connecting seats (14), and the fixed connecting seats (14) have threaded through holes. One adjusting retaining ring (132) is fitted onto the annular wall (11-2) of the upper ring cutter (11), and the other adjusting retaining ring (132) is fitted onto the lower ring cutter (11). The annular wall (11-2) is also provided with a first limiting bolt (131). The first limiting bolt (131) is screwed into the threaded through hole of the fixed connecting seat (14) in the corresponding upper adjusting ring (132) and the threaded through hole of the fixed connecting seat (14) in the lower adjusting ring (132). The first limiting bolt (131) is adjusted, and under the action of the sealing gasket (12), the upper ring cutter (11) and the lower ring cutter (11) are sealed and connected. The bracket (4) includes a base (41), a vertical support rod (42), a support rod (45), and a ring cutter limiting ring (44). The vertical support rod (42) is fixed on the base (41) and is perpendicular to the base (41). One end of the support rod (45) is fixed to the vertical support rod (42), and the other end is fixed to the ring cutter limiting ring (44). The ring cutter measuring device (1) is fixed on the ring cutter limiting ring (44). The base (41) is provided with a measuring cylinder (3), and the measuring cylinder (3) is provided with a funnel (2). The inlet of the funnel (2) faces the ring cutter (11), and the outlet of the funnel (2) faces the inside of the measuring cylinder (3). The base (41) is equipped with a level (411), and the four bottom feet of the base (41) are equipped with horizontal adjustment feet (412) that are perpendicular to the base (41). The base (41) is adjusted to be level by adjusting the horizontal adjustment feet (412), and the level is observed by the level (411).

2. The novel ring sampler method for measuring soil permeability according to claim 1, characterized in that: The support rod (45) is connected to the vertical support rod (42) at one end with a support rod limiting ring (43). The support rod limiting ring (43) is fitted onto the vertical support rod (42). The support rod limiting ring (43) has a threaded through hole that is connected to the inside of the support rod limiting ring (43). A limiting bolt (431) is screwed onto the threaded through hole. The vertical height of the support rod limiting ring (43) is adjusted by adjusting the position of the support rod limiting ring (43) on the vertical support rod (42). The limiting bolt (431) is screwed into the threaded through hole and squeezes the vertical support rod (42), so that the support rod (45) and the vertical support rod (42) are fixed.

3. The novel ring sampler method for measuring soil permeability according to claim 1, characterized in that: The side wall of the ring cutter limiting retainer (44) is provided with a threaded hole, and a second limiting bolt (46) is screwed on the threaded hole. The ring cutter limiting retainer (44) is fitted onto the ring cutter (11) on the ring cutter measuring device (1). The second limiting bolt (46) is screwed into the threaded hole on the side wall of the ring cutter limiting retainer (44) and squeezes the ring cutter (11), so that the ring cutter measuring device (1) is fixed on the ring cutter limiting retainer (44) and the compression of the ring cutter (11) by the second limiting bolt (46) is released. The ring cutter (11) can move up and down and adjust its position within the ring cutter limiting retainer (44).

4. The novel ring sampler method for measuring soil permeability according to claim 1, characterized in that: The ring cutter limiting ring (44) and the support rod (45) are fixedly connected by bolts.

5. The novel ring sampler method for measuring soil permeability according to claim 1, characterized in that: The part where the ring cutter limiting retaining ring (44) connects to the support rod (45) is provided with a connecting seat (47), the connecting seat has a connecting groove, and fastening threaded holes are opened on the upper and lower sides of the connecting groove; The support rod (45) has a locking hole at one end connected to the ring cutter limiting ring (44), and the support rod (45) is inserted into the connecting groove of the connecting seat (47); a fastening bolt (48) is also provided, and the fastening bolt (48) is screwed into one fastening thread hole, the locking hole and the other fastening thread hole of the connecting seat in sequence and tightened to fix it, so that the ring cutter limiting ring (44) and the support rod (45) are tightened and fixed by the bolt.

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