A multi - granularity water - filtering and sediment - settling device

Abstract

The present invention discloses a multi - grain - level water - filtering and sand - sedimenting device in the field of ecological environmental protection technology, which includes a drainage part with a drainage slope whose top size is larger than the bottom size; a cylinder part arranged below the drainage part, and the top end of the cylinder part is fixedly connected to the bottom end of the drainage part; a primary sand - filtering net detachably and fixedly connected to the top of the inner cavity of the cylinder part; a secondary sand - filtering net detachably and fixedly connected to the middle of the inner cavity of the cylinder part; a tertiary sand - filtering net detachably and fixedly connected to the bottom of the inner cavity of the cylinder part; wherein, the mesh size of the secondary sand - filtering net is larger than that of the tertiary sand - filtering net and smaller than that of the primary sand - filtering net, and the meshes of the primary sand - filtering net, secondary sand - filtering net and tertiary sand - filtering net can be opened and closed. The present invention utilizes the gravity of the fluid for filtering and sedimenting sand, not only realizing multi - stage filtering of water - filtering and sand - sedimenting, but also having the advantages of good sand - sedimenting effect and the sediment amount of each particle size level can be quantitatively measured.

Description

Technical Field

[0001] The invention relates to the technical field of ecological environmental protection, and in particular to a multi-grade water filtering and sand settling device. Background Art

[0002] In the soil and water conservation measures system, drainage and sedimentation measures are an important part of temporary measures. Temporary drainage and sedimentation measures at the construction site of production and construction projects are not only an effective means to reduce soil and water loss on site, but also an important means to estimate the intensity of soil and water loss by measuring the sand content on site. The sand content of the sedimentation tank directly affects the calculation results of the amount of soil and water loss. At present, the more mature and traditional sedimentation tanks in temporary soil and water conservation measures are brick-built and mortar-faced, which are widely used in soil and water conservation.

[0003] Sedimentation pond measures are generally more suitable for areas dominated by water erosion or with greater erosion intensity during the rainy season. The temporary measures of sedimentation ponds currently adopted have high requirements for the layout site and are relatively expensive. At the same time, the sand interception effect is not obvious. The muddy water in the sedimentation pond is in a saturated overflow state for a long time, which cannot play a good role in sedimentation. The silt and sand at the bottom of the sedimentation pond cannot be cleaned in time, and it is even more impossible to take water samples to determine the sand content.

[0004] In view of the shortcomings of the existing sedimentation tank, technicians in this field have come up with the idea of ​​using a multi-stage filtration method to measure the sand content in the drainage. In actual measurement, since the radial dimension of the sand filter is about 1000mm, and the spacing between the two adjacent sand filters is 500mm to 800mm, and when dumping the sand outward, the entire water filtration and sedimentation device needs to be dumped, which is not only inconvenient for the discharge of sand, but also easily causes some of the sand on the lower sand filter to pass through the upper sand filter under the action of gravity and mix with the sand on the upper sand filter, resulting in the sand content of sand particles of different particle sizes cannot be directly measured.

[0005] Therefore, how to achieve rapid and accurate discharge of sand particles of different particle sizes on different sand filter nets has become a technical problem that needs to be urgently solved by technical personnel in this field. Summary of the invention

[0006] In view of this, the object of the present invention is to provide a multi-grade water filtration and sedimentation device to solve the technical problem that the existing multi-stage filtration device cannot quickly and accurately measure the sand content in the drainage.

[0007] The technical solution adopted by the present invention is: a multi-grade water filtering and sand settling device, comprising:

[0008] A drainage portion, wherein the drainage portion has a drainage slope with a top dimension larger than a bottom dimension;

[0009] The cylindrical body part is arranged below the drainage part, and the top end of the cylindrical body part is fixedly connected to the bottom end of the drainage part;

[0010] The first-stage sand filter screen is arranged at the top of the inner cavity of the cylindrical body part, and the first-stage sand filter screen is detachably and fixedly connected to the cylindrical body part;

[0011] The second-stage sand filter screen is arranged in the middle of the inner cavity of the cylindrical body part, and the second-stage sand filter screen is detachably and fixedly connected to the cylindrical body part;

[0012] The third-stage sand filter screen is arranged at the bottom of the inner cavity of the cylindrical body part, and the third-stage sand filter screen is detachably and fixedly connected to the cylindrical body part;

[0013] Wherein, the mesh size of the second-stage sand filter screen is larger than that of the third-stage sand filter screen and smaller than that of the first-stage sand filter screen, and the meshes of the first-stage sand filter screen, the second-stage sand filter screen and the third-stage sand filter screen can be opened and closed.

[0014] Preferably, the first-stage sand filter screen, the second-stage sand filter screen and the third-stage sand filter screen all include a static filter disc, a dynamic filter disc and a hollow connecting pipe arranged coaxially. The static filter disc is fixedly connected to the hollow connecting pipe, and the dynamic filter disc is connected to the hollow connecting pipe and can rotate relative to the static filter disc so that the static filter holes of the static filter disc can be aligned or misaligned with the dynamic filter holes of the dynamic filter disc.

[0015] Preferably, a rotating disc is arranged in the inner cavity of the hollow connecting pipe. A plurality of horizontal connecting rods are circumferentially and evenly distributed on the circumferential side of the rotating disc. Guide limiting grooves matched with the horizontal connecting rods are circumferentially and evenly distributed on the pipe wall of the hollow connecting pipe; The middle part of the horizontal connecting rod is horizontally slidably connected in the guide limiting groove, and one end of the horizontal connecting rod is fixedly connected to the dynamic filter disc to drive the dynamic filter disc to rotate relative to the static filter disc through the rotating disc.

[0016] Preferably, a rotating rod is coaxially arranged in the hollow connecting pipe. A long strip-shaped inserting block is vertically connected to the bottom end of the rotating rod. A long strip-shaped through groove hole and a long strip-shaped blind groove hole are vertically connected on the rotating disc, and the length of the through groove hole is greater than the length of the inserting block so that the inserting block can axially pass through the rotating disc, and the inserting block is in transmission cooperation with the blind groove hole to drive the rotating disc to rotate.

[0017] Preferably, the hollow connecting pipe includes alternately arranged static pipe sections and dynamic pipe sections. The static filter disc is fixedly connected to the static pipe section, the dynamic filter disc is fixedly connected to the dynamic pipe section, and a different-axis rod is arranged in the inner cavity of the hollow connecting pipe. The bottom end of the different-axis rod is in transmission connection with the dynamic pipe section and can drive the dynamic filter disc to rotate relative to the static filter disc.

[0018] Preferably, a plugging ring is provided on the inner wall of the moving pipe section, a supporting block is provided at the top of the hollow connecting pipe, a radial partition rod is provided between the supporting block and the hollow connecting pipe, and the three radial partition rods are distributed along the circumferential direction of the hollow connecting pipe to divide the inner cavity of the hollow connecting pipe into three rotating rod areas, and the plugging rings are respectively located below the rotating rod areas.

[0019] Preferably, a connecting portion capable of being detachably and fixedly connected to the top end of the offset shaft rod is provided on the supporting block, and the connecting portion can enable the offset shaft rod to rotate around the axis of the hollow connecting pipe.

[0020] Preferably, the static filter disc is arranged above the dynamic filter disc, and the lower surface of the static filter disc is attached to the upper surface of the dynamic filter disc; an arc-shaped limiting groove is provided on the lower surface of the static filter disc, and a limiting protrusion is provided on the upper surface of the dynamic filter disc, and the limiting protrusion is slidably connected in the arc-shaped limiting groove.

[0021] Preferably, an upper chamber is formed between the first-stage sand filter screen, the second-stage sand filter screen and the cylindrical part, a middle chamber is formed between the second-stage sand filter screen, the cylindrical part and the third-stage sand filter screen, and a lower chamber is formed between the third-stage sand filter screen and the cylindrical part; an upper drain pipe, a middle drain pipe and a lower drain pipe are provided on the cylindrical part, the upper drain pipe is communicated with the upper chamber, the middle drain pipe is communicated with the middle chamber, the lower drain pipe is communicated with the lower chamber, and the included angles between the upper drain pipe and the middle drain pipe and the horizontal direction are both 45°.

[0022] Preferably, the mesh diameter of the first-stage sand filter screen is 2 mm, the mesh diameter of the second-stage sand filter screen is 0.25 mm, and the mesh diameter of the third-stage sand filter screen is 0.075 mm.

[0023] Advantages of the present invention:

[0024] The present invention utilizes the principles of space division and time division, enabling the mesh holes of each sand filter screen to be opened and closed. When filtering drainage is required, the mesh holes on the sand filter screen can be opened to achieve multi-stage filtering of sand grains with different particle sizes. When it is necessary to pour out sand grains with different particle sizes, the mesh holes on the sand filter screen can be closed to make the sand grains with different particle sizes in non-communicating spaces, so as to facilitate pouring out the sand grains with different particle sizes quickly one after another and ensure the accuracy of the weighing measurement of sand grains with each particle size.

[0025] The sand filter screen in the present invention includes a static filter disc, a dynamic filter disc and a hollow connecting pipe arranged coaxially. The static filter disc is detachably and fixedly connected to the hollow connecting pipe and the cylindrical part, and the dynamic filter disc is rotatably connected to the hollow connecting pipe, enabling the dynamic filter disc and the static filter disc to rotate relative to each other, and enabling the dynamic filter holes on the dynamic filter disc to be aligned or misaligned with the static filter holes on the static filter disc, thereby realizing the opening and closing of the mesh holes of the sand filter screen. Description of the drawings

[0026] Figure 1 It is a schematic structural view of the multi - granularity water - filtering and sediment - settling device of the present invention;

[0027] Figure 2 It is a three - dimensional schematic view of the multi - granularity water - filtering and sediment - settling device of the present invention;

[0028] Figure 3 It is a top view of the sand - filtering net;

[0029] Figure 4 It is one of the schematic structural views of the sand - filtering net;

[0030] Figure 5 It is a schematic structural view of the rotating disk;

[0031] Figure 6 It is a perspective view of the hollow connecting pipe;

[0032] Figure 7 It is one of the connection schematic views of the sand - filtering net and the hollow connecting pipe;

[0033] Figure 8 It is another connection schematic view of the sand - filtering net and the hollow connecting pipe;

[0034] Figure 9 It is a top view of the hollow connecting pipe;

[0035] Figure 10 It is another schematic structural view of the sand - filtering net.

[0036] Explanation of the reference numerals in the figure:

[0037] 100, drainage part;

[0038] 110, drainage slope;

[0039] 200, cylinder part;

[0040] 210, upper drain pipe; 220, middle drain pipe; 230, lower drain pipe;

[0041] 300, primary sand - filtering net;

[0042] 310, static filtering disk; 311, arc - shaped limiting groove;

[0043] 320, moving filtering disk; 321, limiting protrusion;

[0044] 330, hollow connecting pipe; 331, guiding and limiting groove; 332, static pipe section; 333, moving pipe section; 334, pipe cap;

[0045] 340, rotating disk; 341, through slot hole; 342, blind slot hole; 343, horizontal connecting rod; 344, arc - shaped blocking hole plate;

[0046] 350, Rotating rod; 351, Insertion block;

[0047] 360, Insertion ring;

[0048] 370, Non - coaxial rod;

[0049] 380, Support block; 381, Radial partition rod; 382, Connection part;

[0050] 400, Secondary sand - filtering net;

[0051] 500, Tertiary sand - filtering net. Detailed implementation manners

[0052] The following further elaborates in detail the detailed implementation manners of the present invention with reference to the accompanying drawings. These implementation manners are only used to illustrate the present invention and are not intended to limit the present invention.

[0053] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0054] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] In addition, in the description of the present invention, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0056] Embodiment, as Figures 1 - 10 shown, a multi - granularity water - filtering and sediment - settling device is installed at the end of a drainage ditch and can classify and filter sand grains with different particle sizes in the drainage water; the device includes:

[0057] A drainage part 100, and the drainage part 100 has a drainage slope 110 with a top size larger than the bottom size.

[0058] The cylindrical body part 200 is arranged below the drainage part 100, and the top end of the cylindrical body part 200 is fixedly connected to the bottom end of the drainage part 100.

[0059] The first-stage sand filtering net 300 is arranged at the top of the inner cavity of the cylindrical body part 200, and the first-stage sand filtering net 300 is detachably and fixedly connected to the cylindrical body part 200.

[0060] The second-stage sand filtering net 400 is arranged in the middle of the inner cavity of the cylindrical body part 200, and the second-stage sand filtering net 400 is detachably and fixedly connected to the cylindrical body part 200.

[0061] The third-stage sand filtering net 500 is arranged at the bottom of the inner cavity of the cylindrical body part 200, and the third-stage sand filtering net 500 is detachably and fixedly connected to the cylindrical body part 200.

[0062] Wherein, the mesh size of the second-stage sand filtering net 400 is larger than that of the third-stage sand filtering net 500 and smaller than that of the first-stage sand filtering net 300, and the meshes of the first-stage sand filtering net 300, the second-stage sand filtering net 400 and the third-stage sand filtering net 500 can be opened and closed.

[0063] This application utilizes the principles of space division and time division to enable the meshes of the first-stage sand filtering net 300, the second-stage sand filtering net 400 and the third-stage sand filtering net 500 to be opened and closed. When it is necessary to filter the drainage, the meshes on the first-stage sand filtering net 300, the second-stage sand filtering net 400 and the third-stage sand filtering net 500 can be opened to achieve hierarchical filtration of sand grains with different particle sizes; when it is necessary to pour out sand grains with different particle sizes, the meshes on the first-stage sand filtering net 300, the second-stage sand filtering net 400 and the third-stage sand filtering net 500 can be closed to make the sand grains with different particle sizes in non-connected spaces, so as to facilitate pouring out the sand grains with different particle sizes quickly one after another to ensure the accuracy of the weighing measurement of sand grains with each particle size.

[0064] In a specific embodiment, such as Figure 2 、 Figure 4 、 Figure 7 、 Figure 8As shown in the figure, the primary sand filter screen 300, the secondary sand filter screen 400, and the tertiary sand filter screen 500 all include a static filter disc 310, a dynamic filter disc 320, and a hollow connecting pipe 330 that are coaxially arranged; among them, the outer circumferential side of the static filter disc 310 is fixedly connected to the inner wall of the cylindrical body 200 in the circumferential direction, so that the static filter disc 310 is fixed in the inner cavity of the cylindrical body 200; the static filter disc 310 is coaxially sleeved outside the hollow connecting pipe 330 and fixedly connected to the hollow connecting pipe 330, so that the hollow connecting pipe 330 can be coaxially fixed in the inner cavity of the cylindrical body 200; the dynamic filter disc 320 is coaxially sleeved outside the hollow connecting pipe 330, and the dynamic filter disc 320 can rotate relative to the static filter disc 310, so that the static filter holes on the static filter disc 310 can be aligned or misaligned with the dynamic filter holes on the dynamic filter disc 320, thereby realizing the opening and closing of the mesh holes of the primary sand filter screen 300, the secondary sand filter screen 400, and the tertiary sand filter screen 500.

[0065] Such a setting is because: the static filter disc 310 is coaxially and fixedly connected to the hollow connecting pipe 330, and the dynamic filter disc 320 is coaxially and rotatably connected to the hollow connecting pipe 330, so that the static filter disc 310 and the dynamic filter disc 320 can rotate relative to each other; when it is necessary to filter the drainage, the dynamic filter disc 320 can be rotated to align the dynamic filter holes on the dynamic filter disc 320 with the static filter holes on the static filter disc 310, realizing the opening of the mesh holes of the primary sand filter screen 300, the secondary sand filter screen 400, and the tertiary sand filter screen 500; when it is necessary to pour out the sand particles, the dynamic filter disc 320 can be rotated to completely misalign the dynamic filter holes on the dynamic filter disc 320 with the static filter holes on the static filter disc 310, realizing the closing of the mesh holes of the primary sand filter screen 300, the secondary sand filter screen 400, and the tertiary sand filter screen 500.

[0066] Preferably, the outer circumferential side of the static filter disc 310 is axially slidably connected and circumferentially fixedly connected to the cylindrical body 200; for example, the outer circumferential side of the static filter disc 310 is provided with a sealing slider, and the inner wall of the cylindrical body 200 is provided with an axial chute, and the sealing slider is hermetically slidably connected in the axial chute.

[0067] In a specific embodiment, such as Figure 3 、 Figure 4 、 Figure 5 、 Figure 6As shown, a rotating disk 340 is coaxially arranged in the inner cavity of the hollow connecting pipe 330. The number of the rotating disks 340 is three, and the three rotating disks 340 are spaced along the axial direction of the hollow connecting pipe 330; a plurality of horizontal connecting rods 343 are circumferentially and evenly distributed on the outer circumferential side of the rotating disk 340, for example, three or four horizontal connecting rods 343; at the same time, guiding and limiting grooves 331 corresponding to the horizontal connecting rods 343 one by one are circumferentially and evenly distributed on the pipe wall of the hollow connecting pipe 330. The guiding and limiting grooves 331 are arc-shaped grooves in the horizontal direction and are used for guiding and limiting the horizontal rotation of the horizontal connecting rods 343; the middle part of the horizontal connecting rod 343 is horizontally slidably connected in the guiding and limiting groove 331, and one end of the horizontal connecting rod 343 is fixedly connected to the moving filter disk 320, so as to drive the moving filter disk 320 to rotate relative to the static filter disk 310 through the driving of the rotating disk 340.

[0068] Such a setting is because: a rotatable rotating disk 340 is coaxially arranged in the inner cavity of the hollow connecting pipe 330, and the rotating disk 340 and the moving filter disk 320 are fixedly connected through the horizontal connecting rod 343. With the supporting, guiding and limiting effects of the guiding and limiting grooves 331 on the horizontal connecting rod 343 on the hollow connecting pipe 330, the rotating disk 340 can drive the moving filter disk 320 to rotate forward and backward relative to the static filter disk 310, so as to realize the opening and closing of the meshes of the primary sand filtering net 300, the secondary sand filtering net 400 and the tertiary sand filtering net 500.

[0069] It should be noted that: any known driving method can be selected for the driving method of the rotating disk 340, for example, a driving motor fixedly connected to the hollow connecting pipe 330 is installed below the rotating disk 340.

[0070] Preferably, an arc-shaped blocking hole plate 344 is arranged in the middle of the horizontal connecting rod 343. The radial dimension of the arc-shaped hole plate 344 is equal to the inner diameter dimension of the hollow connecting pipe 330, and the guiding and limiting groove 331 can be closed during the horizontal rotation of the horizontal connection 343 in the guiding and limiting groove 331.

[0071] In a specific embodiment, such as Figure 5 、 Figure 6As shown in the figure, a rotating rod 350 is coaxially arranged in the hollow connecting pipe 330, and a long strip-shaped plug-in block 351 is vertically connected to the bottom end of the rotating rod 350; on the rotating disk 340, there are a vertically connected long strip-shaped through slot 341 and a long strip-shaped blind slot 342, and a circular hole penetrating the rotating disk 340 is provided at the vertically connected position of the through slot 341 and the blind slot 342. The circular hole is coaxial with the rotating disk 340, so that the rotating rod 350 can freely penetrate the rotating disk 340; at the same time, the length of the through slot 341 is greater than the length of the plug-in block 351, and the width dimension of the through slot 341 is greater than the width of the plug-in block 351, so that the plug-in block 351 can axially pass through the rotating disk 340; the plug-in block 351 can be inserted into the blind slot 342, and the rotation of the rotating disk 340 is driven by the stop fit between the side wall of the plug-in block 351 and the side wall of the long strip-shaped blind slot 342.

[0072] Such a setting is because: a rotating rod 350 is arranged in the inner cavity of the hollow connecting pipe 330, and a long strip-shaped through slot 341 and a long strip-shaped blind slot 342 perpendicular to each other are arranged on the rotating disk 340; when it is necessary to manually open or close the meshes of the primary sand filter screen 300, the secondary sand filter screen 400 and the tertiary sand filter screen 500, the plug-in block 351 at the bottom end of the rotating rod 350 can be aligned with the through slot 341, so that the rotating rod 350 can pass through the upper rotating disk 340, and by rotating the rotating rod 350 by 90° or 180°, the plug-in block 351 is aligned with the blind slot 342 on the lower rotating disk 340, and by rotating the rotating rod 350 by a predetermined angle (preferably 90°) again, the rotation of the lower rotating disk 340 is realized, that is, the opening or closing of the meshes of the lower sand filter screen is realized.

[0073] Preferably, the length of the rotating rod 350 is at least greater than the axial length from the lowermost rotating disk 340 to the top end of the hollow connecting pipe 330. Preferably, the axial length of the rotating rod 350 is equal to or greater than the axial length of the hollow connecting pipe 330, and a pipe cap 334 is fixedly connected to the top end of the rotating rod 350. The pipe cap 334 can be detachably and sealingly connected to the top end of the hollow connecting pipe 330, such as by screw connection.

[0074] Such a setting is because: a pipe cap 334 is fixedly connected to the top end of the rotating rod 350, and the pipe cap 334 can be screwed to the top end of the hollow connecting pipe 330, which not only closes the top end of the hollow connecting pipe 330 to prevent drainage from entering the hollow connecting pipe 330, but also facilitates the fixation of the rotating rod 350.

[0075] In a specific embodiment, such as Figure 7 、 Figure 8As shown, the hollow connecting pipe 330 includes multiple static pipe segments 332 and dynamic pipe segments 333 arranged alternately, and the static pipe segments 332 and the dynamic pipe segments 333 are coaxially rotatably connected; the static filter discs 310 and the static pipe segments 332 are in one-to-one correspondence, and the static filter discs 310 are fixedly connected to the bottom ends of the static pipe segments 332, the dynamic filter discs 320 and the dynamic pipe segments 333 are in one-to-one correspondence, and the dynamic filter discs 320 are fixedly connected to the top ends of the dynamic pipe segments 333; multiple off-axis rods 370 are arranged in parallel in the inner cavity of the hollow connecting pipe 330, the off-axis rods 370 and the dynamic pipe segments 333 are in one-to-one correspondence, and the bottom ends of the off-axis rods 370 are drivingly connected to the dynamic pipe segments 333 to drive the dynamic filter discs 320 to rotate relative to the static filter discs 310 through the off-axis rods 370.

[0076] Such a setting is because: the hollow connecting pipe 330 is set as the alternately arranged and rotatably connected static pipe segments 332 and dynamic pipe segments 333, and the bottom ends of the off-axis rods 370 in the inner cavity of the hollow connecting pipe 330 are connected to the dynamic pipe segments 333. By driving the off-axis rods 370 to rotate around the axis of the hollow connecting pipe 330, the dynamic pipe segments 333 can be driven to rotate relative to the static pipe segments 332, thereby realizing the relative rotation of the dynamic filter discs 320 and the static filter discs 310.

[0077] In a specific embodiment, as Figure 8 、 Figure 9 shown, on the inner wall of the dynamic pipe segment 333, there are insertion rings 360, that is, the number of the insertion rings 360 is three, and the three insertion rings 360 are circumferentially evenly distributed around the axis of the hollow connecting pipe 330. At the same time, the bottom ends of the off-axis rods 370 can be inserted into the insertion rings 360; at the top of the hollow connecting pipe 330, there is a support block 380, and between the support block 380 and the hollow connecting pipe 330, there are three radial partition rods 381; the three radial partition rods 381 are equally spaced along the circumferential direction of the hollow connecting pipe 330, and the three radial partition rods 381 divide the inner cavity of the hollow connecting pipe 330 into three rotating rod areas, and the insertion rings 360 are respectively located below the rotating rod areas.

[0078] Such a setting is because: after the bottom ends of the off-axis rods 370 are inserted into the inner holes of the insertion rings 360, the relative rotation of the dynamic pipe segments 333 and the static pipe segments 332 can be realized by rotating the off-axis rods 370 around the axis of the hollow connecting pipe 330; at the same time, the off-axis rods 370 are radially and axially supported by the three radial partition rods 381.

[0079] In a specific embodiment, as Figure 8 、 Figure 9 shown, on the support block 380, there is a connecting portion 382 that can be detachably and fixedly connected to the top ends of the off-axis rods 370, and the connecting portion 382 can enable the off-axis rods 370 to rotate around the axis of the hollow connecting pipe 330.

[0080] This arrangement is because: by setting a connecting portion 382 on the support block 380, the top of the off-axis rod 370 can be fixedly connected to the connecting portion 382 to ensure that the rotation axis of the off-axis rod 370 coincides with the axis of the hollow connecting tube 330, thereby facilitating driving the moving tube section 333 to rotate.

[0081] Preferably, the connecting portion 382 is a positioning hole, which is coaxial with the hollow connecting tube 330 .

[0082] In a specific embodiment, if Figure 10 As shown, the static filter disc 310 is arranged above the dynamic filter disc 320, and the lower surface of the static filter disc 310 is in contact with the upper surface of the dynamic filter disc 320 to prevent a horizontal connecting gap from being formed between the static filter holes on the static filter disc 310 and the dynamic filter holes of the dynamic filter disc 320; an arc-shaped limiting groove 311 is provided on the lower surface of the static filter disc 310 along the circumferential direction, and a hemispherical limiting protrusion 321 is provided on the upper surface of the dynamic filter disc 320, and the limiting protrusion 321 is slidably connected in the arc-shaped limiting groove 311.

[0083] This arrangement is because: the relative rotation of the static filter disc 310 and the dynamic filter disc 320 can be guided by the sliding of the limiting protrusion 321 in the arc-shaped limiting groove 311, and the relative rotation of the static filter disc 310 and the dynamic filter disc 320 can be limited by the cooperation between the limiting protrusion 321 and the stoppers at both ends of the arc-shaped limiting groove 311, so that the static filter holes on the static filter disc 310 are aligned or staggered with the dynamic filter holes on the dynamic filter disc 320.

[0084] In a specific embodiment, if Figure 1 , Figure 2 As shown, an upper chamber is formed between the primary sand filter net 300, the secondary sand filter net 400 and the cylinder body 200, a middle chamber is formed between the secondary sand filter net 400, the cylinder body 200 and the tertiary sand filter net 500, and a lower chamber is formed between the tertiary sand filter net 500 and the cylinder body 200; at the same time, an upper drainage pipe 210, a middle drainage pipe 220 and a lower drainage pipe 230 are provided on the cylinder body 200, the upper drainage pipe 210 is connected to the upper chamber, the middle drainage pipe 220 is connected to the middle chamber, the lower drainage pipe 230 is connected to the lower chamber, and the angles between the upper drainage pipe 210 and the middle drainage pipe 220 and the horizontal direction are both 45°.

[0085] This arrangement is because: in different usage environments, due to different filtration levels and different difficulties in laying drainage pipes, the direction of drainage needs to be determined according to actual working conditions; for example, when only one level of filtration is required, close the mesh holes of the secondary sand filter net 400 and the tertiary sand filter net 500, and drain the water outward through the upper drainage pipe 210.

[0086] Preferably, the upper drain pipe 210, the middle drain pipe 220, and the lower drain pipe 230 are made of PVC, and different PVC elbows can be added for connection according to the actual drainage direction of the site.

[0087] In a specific embodiment, as Figure 1 shown, the mesh diameter of the first-stage sand filtration net 300 is 2 mm, which can achieve the function of filtering and sedimentation of sediment with a particle size greater than or equal to 2 mm; the mesh diameter of the second-stage sand filtration net 400 is 0.25 mm, which can achieve the function of filtering and sedimentation of sediment with a particle size less than 2 mm and greater than 0.075 mm; the mesh diameter of the third-stage sand filtration net 500 is 0.075 mm, which can achieve the function of filtering and sedimentation of sediment with a particle size less than 0.075 mm; the included angle between the drainage inclined plane 110 and the horizontal plane is 45°.

[0088] The usage process of the device of the present invention is as follows:

[0089] First, place the device stably at the end of the drainage ditch so that the meshes of the first-stage sand filtration net 300, the second-stage sand filtration net 400, and the third-stage sand filtration net 500 are all in a misaligned closed state, and embed the upper drain pipe 210, the middle drain pipe 220, and the lower drain pipe 230 according to the on-site terrain.

[0090] Secondly, according to the required filtration and sedimentation level, by rotating the rotating rod 350 and the eccentric rod 370 by a predetermined angle, select to turn on the filtration and sedimentation function of the first-stage sand filtration net 300 or the first-stage sand filtration net 300, the second-stage sand filtration net 400, or the first-stage sand filtration net 300, the second-stage sand filtration net 400, and the third-stage sand filtration net 500 respectively; after the filtration and sedimentation are completed, the whole device can be taken out, and after closing the meshes of the first-stage sand filtration net 300, the second-stage sand filtration net 400, and the third-stage sand filtration net 500, directly pour out the sediment in the collection device and weigh it with a balance, and the amount of sediment is the soil erosion amount generated by a certain catchment area within a certain period of time.

[0091] In the first-stage filtration state, closing the second-stage and third-stage filtrations can shorten the filtration time, accelerate the outflow of the filtrate, and reduce the loss of sediment in the second-stage and third-stage filtrations and the error caused by collection during the sediment weighing process.

[0092] Compared with the prior art, the present application has at least the following beneficial technical effects:

[0093] The device in the present application uses the gravity of the fluid for filtration and sedimentation, not only realizing multi-stage filtration of water and sediment, but also having the advantages of good sedimentation effect and direct quantitative measurement of the sediment volume of each particle size level.

[0094] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and substitutions can be made, and these improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A multi - granular - level water - filtering and sediment - settling device, characterized in that, it includes: A drainage part (100), the drainage part (100) having a drainage slope (110) with a top size larger than the bottom size; A cylinder part (200), the cylinder part (200) being arranged below the drainage part (100), and the top end of the cylinder part (200) being fixedly connected to the bottom end of the drainage part (100); A primary sand - filtering net (300), the primary sand - filtering net (300) being arranged at the top of the inner cavity of the cylinder part (200), and the primary sand - filtering net (300) being detachably and fixedly connected to the cylinder part (200); A secondary sand - filtering net (400), the secondary sand - filtering net (400) being arranged in the middle of the inner cavity of the cylinder part (200), and the secondary sand - filtering net (400) being detachably and fixedly connected to the cylinder part (200); A tertiary sand - filtering net (500), the tertiary sand - filtering net (500) being arranged at the bottom of the inner cavity of the cylinder part (200), and the tertiary sand - filtering net (500) being detachably and fixedly connected to the cylinder part (200); wherein, the mesh size of the secondary sand - filtering net (400) is larger than the mesh size of the tertiary sand - filtering net (500) and smaller than the mesh size of the primary sand - filtering net (300), and the meshes of the primary sand - filtering net (300), secondary sand - filtering net (400) and tertiary sand - filtering net (500) can be opened and closed; The primary sand - filtering net (300), secondary sand - filtering net (400) and tertiary sand - filtering net (500) all include a static filtering disk (310), a dynamic filtering disk (320) and a hollow connecting pipe (330) arranged coaxially. The static filtering disk (310) is fixedly connected to the hollow connecting pipe (330), and the dynamic filtering disk (320) is connected to the hollow connecting pipe (330) and can rotate relative to the static filtering disk (310) so that the static filtering holes of the static filtering disk (310) can be aligned or misaligned with the dynamic filtering holes of the dynamic filtering disk (320); A rotating disk (340) is arranged in the inner cavity of the hollow connecting pipe (330). A plurality of horizontal connecting rods (343) are circumferentially and evenly distributed on the circumferential side of the rotating disk (340). Guide and limit grooves (331) matching with the horizontal connecting rods (343) are circumferentially and evenly distributed on the pipe wall of the hollow connecting pipe (330); The middle part of the horizontal connecting rod (343) is horizontally slidably connected in the guide and limit groove (331), and one end of the horizontal connecting rod (343) is fixedly connected to the dynamic filtering disk (320) to drive the dynamic filtering disk (320) to rotate relative to the static filtering disk (310) through the rotating disk (340).

2. The multi - granular - level water - filtering and sediment - settling device according to claim 1, characterized in that, A rotating rod (350) is coaxially arranged in the hollow connecting pipe (330). A long strip-shaped insertion block (351) is vertically connected to the bottom end of the rotating rod (350). A long strip-shaped through slot hole (341) and a long strip-shaped blind slot hole (342) are vertically connected to the rotating disc (340). The length of the through slot hole (341) is greater than the length of the insertion block (351), so that the insertion block (351) can axially pass through the rotating disc (340), and the insertion block (351) is in driving cooperation with the blind slot hole (342) to drive the rotating disc (340) to rotate.

3. A multi-stage water filtering and sediment settling device according to claim 2, characterized in that the static filter disc (310) is arranged above the dynamic filter disc (320), and the lower surface of the static filter disc (310) is attached to the upper surface of the dynamic filter disc (320); an arc-shaped limiting groove (311) is arranged on the lower surface of the static filter disc (310), and a limiting protrusion (321) is arranged on the upper surface of the dynamic filter disc (320), and the limiting protrusion (321) is slidably connected in the arc-shaped limiting groove (311).

4. A multi-stage water filtering and sediment settling device according to claim 1, characterized in that an upper chamber is formed between the primary sand filtering net (300), the secondary sand filtering net (400) and the cylindrical part (200), a middle chamber is formed between the secondary sand filtering net (400), the cylindrical part (200) and the tertiary sand filtering net (500), and a lower chamber is formed between the tertiary sand filtering net (500) and the cylindrical part (200); an upper drain pipe (210), a middle drain pipe (220) and a lower drain pipe (230) are arranged on the cylindrical part (200), the upper drain pipe (210) communicates with the upper chamber, the middle drain pipe (220) communicates with the middle chamber, the lower drain pipe (230) communicates with the lower chamber, and the included angles between the upper drain pipe (210) and the middle drain pipe (220) and the horizontal direction are both 45°.

5. A multi-stage water filtering and sediment settling device according to claim 1, characterized in that the mesh diameter of the primary sand filtering net (300) is 2 mm, the mesh diameter of the secondary sand filtering net (400) is 0.25 mm, and the mesh diameter of the tertiary sand filtering net (500) is 0.075 mm.

6. A multi-stage water filtering and sediment settling device, characterized in that comprises: a drainage part (100), the drainage part (100) having a drainage slope (110) with a top size larger than the bottom size; a cylindrical part (200), the cylindrical part (200) being arranged below the drainage part (100), and the top end of the cylindrical part (200) being fixedly connected to the bottom end of the drainage part (100); a primary sand filtering net (300), the primary sand filtering net (300) being arranged at the top of the inner cavity of the cylindrical part (200), and the primary sand filtering net (300) being detachably and fixedly connected to the cylindrical part (200); Secondary sand filter screen (400), the secondary sand filter screen (400) is arranged in the middle of the inner cavity of the cylinder part (200), and the secondary sand filter screen (400) is detachably and fixedly connected to the cylinder part (200); Tertiary sand filter screen (500), the tertiary sand filter screen (500) is arranged at the bottom of the inner cavity of the cylinder part (200), and the tertiary sand filter screen (500) is detachably and fixedly connected to the cylinder part (200); Wherein, the mesh size of the secondary sand filter screen (400) is larger than that of the tertiary sand filter screen (500) and smaller than that of the primary sand filter screen (300), and the meshes of the primary sand filter screen (300), secondary sand filter screen (400) and tertiary sand filter screen (500) can be opened and closed; The primary sand filter screen (300), secondary sand filter screen (400) and tertiary sand filter screen (500) all include a static filter disc (310), a dynamic filter disc (320) and a hollow connecting pipe (330) arranged coaxially. The static filter disc (310) is fixedly connected to the hollow connecting pipe (330), and the dynamic filter disc (320) is connected to the hollow connecting pipe (330) and can rotate relative to the static filter disc (310) so that the static filter holes of the static filter disc (310) can be aligned or misaligned with the dynamic filter holes of the dynamic filter disc (320); The hollow connecting pipe (330) includes alternately arranged static pipe sections (332) and dynamic pipe sections (333). The static filter disc (310) is fixedly connected to the static pipe section (332), the dynamic filter disc (320) is fixedly connected to the dynamic pipe section (333), and a non-coaxial rod (370) is arranged in the inner cavity of the hollow connecting pipe (330). The bottom end of the non-coaxial rod (370) is drivingly connected to the dynamic pipe section (333) and can drive the dynamic filter disc (320) to rotate relative to the static filter disc (310).

7. A multi-stage water filtering and sediment settling device according to claim 6, Characterized in that, A plug-in ring (360) is arranged on the inner wall of the dynamic pipe section (333), a support block (380) is arranged at the top of the hollow connecting pipe (330), and a radial partition rod (381) is arranged between the support block (380) and the hollow connecting pipe (330). The three radial partition rods (381) are distributed along the circumferential direction of the hollow connecting pipe (330) and divide the inner cavity of the hollow connecting pipe (330) into three rotating rod areas, and the plug-in ring (360) is located directly below the rotating rod areas one by one.

8. A multi-stage water filtering and sediment settling device according to claim 7, Characterized in that, A connecting portion (382) capable of being detachably and fixedly connected to the top end of the non-coaxial rod (370) is arranged on the support block (380), and the connecting portion (382) can make the non-coaxial rod (370) rotate around the axis of the hollow connecting pipe (330).

9. A multi-stage water filtering and sediment settling device according to claim 6, Characterized in that, The static filter disc (310) is arranged above the dynamic filter disc (320), and the lower surface of the static filter disc (310) is attached to the upper surface of the dynamic filter disc (320); an arc-shaped limiting groove (311) is provided on the lower surface of the static filter disc (310), and a limiting protrusion (321) is provided on the upper surface of the dynamic filter disc (320), and the limiting protrusion (321) is slidably connected in the arc-shaped limiting groove (311).

10. A multi-stage water-filtering and sand-settling device according to claim 6, characterized in that an upper chamber is formed among the primary sand-filtering net (300), the secondary sand-filtering net (400) and the cylindrical body part (200), a middle chamber is formed among the secondary sand-filtering net (400), the cylindrical body part (200) and the tertiary sand-filtering net (500), and a lower chamber is formed between the tertiary sand-filtering net (500) and the cylindrical body part (200); an upper drain pipe (210), a middle drain pipe (220) and a lower drain pipe (230) are provided on the cylindrical body part (200), the upper drain pipe (210) communicates with the upper chamber, the middle drain pipe (220) communicates with the middle chamber, the lower drain pipe (230) communicates with the lower chamber, and the included angles between the upper drain pipe (210) and the middle drain pipe (220) and the horizontal direction are both 45°.

11. A multi-stage water-filtering and sand-settling device according to claim 6, characterized in that the mesh diameter of the primary sand-filtering net (300) is 2 mm, the mesh diameter of the secondary sand-filtering net (400) is 0.25 mm, and the mesh diameter of the tertiary sand-filtering net (500) is 0.075 mm.

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