Telescopic leachate liquid level shielding measuring cylinder

Abstract

The utility model discloses a telescopic leachate liquid level shielding measuring cylinder which comprises a telescopic cylinder body, the telescopic cylinder body comprises a first section measuring cylinder, a tail section measuring cylinder and a middle measuring cylinder arranged between the first section measuring cylinder and the tail section measuring cylinder, the first section measuring cylinder is provided with an air hole, and the tail section measuring cylinder is provided with an air hole. The first section of measuring cylinder is in sliding connection with the middle measuring cylinder, the middle measuring cylinder is in sliding connection with the tail section of measuring cylinder, a filter cover is arranged at the lower end of the tail section of measuring cylinder, and a plurality of filter holes are formed in the filter cover. The filtering cover with the dirt filtering function is arranged at the bottom of the telescopic cylinder, leachate is filtered before entering the cylinder, the situation that dirt floats and enters along with the leachate to affect liquid level height measurement of the measuring device is avoided, and liquid level measurement data are more accurate.

Description

TECHNICAL FIELD

[0001] The utility model relates to liquid level measurement field, especially a telescopic percolate liquid level shielding measuring cylinder. BACKGROUND

[0002] Percolate is a kind of liquid with high concentration of organic or inorganic components produced in the process of stacking and landfill of garbage under the seepage of precipitation and groundwater, and these percolates are collected into percolate pool. In order to better handle these percolates, the staff needs to measure the liquid level of percolate. In the prior art, the measuring device is usually directly inserted into the bottom of the percolate pool for measurement. However, the surface of the percolate pool is usually covered with a lot of floating dirt, and the thickness of the floating dirt is measured into the height of the percolate when measuring the liquid level by the existing measuring device, so that an inaccurate data is obtained, which makes the staff unable to grasp the real height of the percolate liquid level and affects the subsequent treatment of percolate. SUMMARY

[0003] In view of the above problems of the prior art, the utility model solves the technical problem to provide a telescopic percolate liquid level shielding measuring cylinder, which is provided with a filter cover at the bottom of the cylinder body to filter the dirt and prevent the dirt from entering the measuring cylinder, thereby ensuring the accuracy of the liquid level measurement.

[0004] To solve the above technical problems, one technical scheme of the utility model is to provide a telescopic percolate liquid level shielding measuring cylinder, which comprises a telescopic cylinder body, the telescopic cylinder body comprises a first measuring cylinder, a last measuring cylinder and an intermediate measuring cylinder arranged between the first measuring cylinder and the last measuring cylinder, the first measuring cylinder is provided with an air hole, the first measuring cylinder and the intermediate measuring cylinder and the intermediate measuring cylinder and the last measuring cylinder are connected by sliding, and the lower end of the last measuring cylinder is provided with a filter cover, and a plurality of filter holes are formed in the filter cover.

[0005] Further, the first measuring cylinder, the intermediate measuring cylinder and the last measuring cylinder are all hollow measuring cylinders with cylindrical cavities in the middle, and the diameters of the first measuring cylinder, the intermediate measuring cylinder and the last measuring cylinder gradually increase from small to large; when the telescopic cylinder body is in the contracted state, the first measuring cylinder, the intermediate measuring cylinder and the last measuring cylinder are gradually sleeved together from inside to outside, and when the telescopic cylinder body is in the extended state, the upper ends of the intermediate measuring cylinder and the last measuring cylinder are limited to the lower ends of the previous measuring cylinder.

[0006] Further, the first section measuring cylinder and the lower periphery of the intermediate measuring cylinder are provided with an outer edge for limiting the next section measuring cylinder to prevent the next section measuring cylinder from being separated, and the outer diameter of the outer edge is smaller than the inner diameter of the cylindrical cavity of the next section measuring cylinder.

[0007] Further, the upper end of the cylindrical cavity of the intermediate measuring cylinder and the last section measuring cylinder is provided with an inner edge, the inner diameter of the inner edge of the intermediate measuring cylinder and the last section measuring cylinder is smaller than the inner diameter of the respective cylindrical cavity, and the inner diameter of the inner edge is greater than the outer diameter of the previous section measuring cylinder and smaller than the outer diameter of the outer edge of the previous section measuring cylinder, so that the intermediate measuring cylinder and the last section measuring cylinder can slide along the length direction of the previous section measuring cylinder but not separate from the previous section measuring cylinder.

[0008] Further, the intermediate measuring cylinder is defined as a plurality of intermediate measuring cylinders which are sequentially and slidably sleeved from top to bottom, the inner diameter of the inner edge of the intermediate measuring cylinder adjacent to the first section measuring cylinder is greater than the outer diameter of the first section measuring cylinder and smaller than the outer diameter of the outer edge thereof; the inner diameter of the inner edge of the remaining intermediate measuring cylinders is greater than the outer diameter of the previous section intermediate measuring cylinder and smaller than the outer diameter of the outer edge thereof.

[0009] Further, the lower end of the last section measuring cylinder is provided with a cylinder, the lower end of the cylinder is provided with a lower circular ring, the filter cover includes an upper circular ring and a tapered cylinder formed by the upper circular ring downwardly protruding, the inner and outer diameters of the upper circular ring and the lower circular ring are matched, and a hinge seat is jointly arranged between one side end of the upper circular ring and the corresponding position of the lower circular ring, and the other end of the upper circular ring away from the hinge seat is detachably connected with the lower circular ring through a fixing member.

[0010] Further, the fixing member includes a limiting block, one end of the limiting block is fixedly provided with a screw rod, a plug hole matched with the outer diameter of the screw rod is jointly arranged between the upper circular ring and the lower circular ring, the screw rod extends into one end of the plug hole and extends out of the other end of the plug hole, and a nut is screwed on the end of the screw rod extending out of the plug hole.

[0011] Further, at least two groups of traction ropes are further included for stretching and contracting the respective section measuring cylinders, the force receiving ends of the at least two groups of traction ropes are connected with the outer driving part for being elongated and shortened under the action of the outer driving part, and the force applying ends of the at least two groups of traction ropes sequentially pass through the cylindrical space of the last section measuring cylinder and the intermediate measuring cylinder from bottom to top and are fixed with the first section measuring cylinder.

[0012] Further, the lower end of the cylindrical cavities of the first measuring cylinder, the middle measuring cylinder and the last measuring cylinder are provided with fixing parts, the fixing parts are attached to the inner cavity wall of the cylindrical cavities at positions corresponding to the at least two groups of traction ropes, and the force applying ends of the at least two groups of steel wires are fixed to the fixing part of the first measuring cylinder after sequentially passing through the fixing parts of the last measuring cylinder and the middle measuring cylinder.

[0013] Further, the fixing part comprises a fixing ring arranged at the inner cavity wall of the cylindrical cavity and at least two groups of through cavities arranged at positions of the fixing ring corresponding to the at least two groups of traction ropes, the through cavities pass through the fixing ring along the length direction of the cylinder body, and the force applying ends of the at least two groups of traction ropes form knots after sequentially passing through the fixing rings of the last measuring cylinder, the middle measuring cylinder and the first measuring cylinder.

[0014] The telescopic percolate liquid level shielding measuring cylinder has at least the following beneficial effects: the filter cover with the dirt filtering function is arranged at the bottom of the telescopic cylinder body, the percolate is filtered before entering the cylinder body, dirt floating is avoided and also enters to affect the measurement of the liquid level height by the measuring device, liquid level measurement data is more accurate. BRIEF DESCRIPTION OF DRAWINGS

[0015] The drawings described herein are used to provide further understanding of the present application, constitute a part of the present application, the illustrative embodiments of the present application and the description thereof are used to explain the present application, and do not constitute improper limitation on the present application. In the drawings:

[0016] Figure 1 It is a structure diagram of an embodiment of a telescopic percolate liquid level shielding measuring cylinder Figure 1

[0017] Figure 2 It is a structure diagram of an embodiment of a telescopic percolate liquid level shielding measuring cylinder Figure 1

[0018] Figure 3 It is a structure diagram of an embodiment of a telescopic percolate liquid level shielding measuring cylinder Figure 2

[0019] Figure 4 It is a structure diagram of an embodiment of a telescopic percolate liquid level shielding measuring cylinder Figure 3

[0020] Figure 5 It is a structure diagram of an embodiment of a telescopic percolate liquid level shielding measuring cylinder Figure 3

[0021] It is a structure diagram of an embodiment of a telescopic percolate liquid level shielding measuring cylinder Figure 6 Figure 3 It is a structure diagram of an embodiment of a telescopic percolate liquid level shielding measuring cylinder

[0022] Figure 7 It is a structure diagram of an embodiment of a telescopic percolate liquid level shielding measuring cylinder​​​​​Figure 3 Partial structure schematic view at E;

[0023] Figure 8 For Figure 3 Partial structure schematic view at F;

[0024] Figure 9 For Figure 3 Partial structure schematic view at G.

[0025] The meanings of the various reference signs in the drawings are as follows:

[0026] Telescopic barrel 1;

[0027] Towing rope 2, knot head 21;

[0028] Filter cover 3, upper annular ring 31, conical cylinder 32, hinged seat 33, fixing member 34, filter hole 35, limiting block 341, screw rod 342, nut 343, insertion hole 344;

[0029] Ultrasonic liquid level measuring instrument 4;

[0030] First section measuring cylinder 5, side annular wall 51, air hole 52, first outer edge 53, first fixed part 5a, first fixed ring 51a, first through cavity 52a;

[0031] Intermediate measuring cylinder 6, first intermediate measuring cylinder 61, first cylindrical cavity 611, first inner edge 612, second outer edge 613, second fixed part 61a, second intermediate measuring cylinder 62, second cylindrical cavity 621, second inner edge 622, third outer edge 623, third fixed part 62a, fourth fixed part 62b, fourth fixed ring 621b, fourth through cavity 622b, third intermediate measuring cylinder 63, third cylindrical cavity 631, third inner edge 632, fourth outer edge 633, fifth fixed part 63a;

[0032] Last section measuring cylinder 7, fourth cylindrical cavity 71, fourth inner edge 72, sixth fixed part 7a, seventh fixed part 7b, cylindrical barrel 73, lower annular ring 74. DETAILED DESCRIPTION

[0033] The utility model will be further described below in combination with the drawings.

[0034] With reference to Figure 1The utility model discloses a telescopic percolate liquid level shielding measuring cylinder is used for erecting above the percolation pond, when needing to measure the percolate liquid level in the percolation pond, downward stretches into the percolate liquid and measures, when not needing to measure, retracts upward. The telescopic percolate liquid level shielding measuring cylinder includes telescopic cylinder 1 and at least two groups of traction ropes 2 for the traction of telescopic cylinder 1. The bottom of telescopic cylinder 1 is connected with filter cover 3 for filtering the liquid surface floating matter in the percolation pond, and the top of telescopic cylinder 1 is connected with ultrasonic liquid level measuring instrument 4, and the sound velocity incident wave of ultrasonic liquid level measuring instrument 4 passes through telescopic cylinder 1 and enters the lower end filter cover 3 to measure the liquid level height of the percolate liquid entering filter cover 3. The force receiving end of at least two groups of traction ropes 2 is connected with the outer driving part to be telescopic under the action, and the force applying end of at least two groups of traction ropes 2 is connected with telescopic cylinder 1 to pull telescopic cylinder 1 to be telescopic.

[0035] Telescopic cylinder 1 includes first measuring cylinder 5, middle measuring cylinder 6 and last measuring cylinder 7 which are sequentially and slidably connected from top to bottom and from inside to outside, that is, first measuring cylinder 5 and middle measuring cylinder 6 are slidably connected, and middle measuring cylinder 6 and last measuring cylinder 7 are also slidably connected. First measuring cylinder 5, middle measuring cylinder 6 and last measuring cylinder 7 are all hollow measuring cylinders with cylindrical cavities penetrating through corresponding measuring cylinders along the length direction, and the diameters of first measuring cylinder 5, middle measuring cylinder 6 and last measuring cylinder 7 are gradually arranged from small to large.

[0036] The first section measuring cylinder 5 comprises a top wall and a side ring wall 51 arranged around the lower end edge of the top wall, and a through hole is formed in the top wall for the sound velocity incident wave of the ultrasonic liquid level measuring instrument 4 to pass through, which can be defined as being arranged concentrically with the top wall. A fixing hole is arranged around the periphery of the through hole on the top wall for fixing the ultrasonic liquid level measuring instrument 4, which can be defined as a threaded hole, a rivet hole, a clamping hole or any other hole structure that can detachably arrange the ultrasonic liquid level measuring instrument on the top wall. The side ring wall 51 is provided with a plurality of air holes 52 for balancing the air pressure in the telescopic cylinder body 1, and a plurality of air holes 52 are uniformly distributed on the side ring wall 51 in a circumferential direction with the center of the top wall as the center. It should be understood that the position and number of the air holes 52 are not limited to the above description, and in different embodiments, the air holes 52 can be set according to different needs, so this place will not be described one by one. The lower end of the outer periphery of the side ring wall 51 is outwardly protruded to form a first outer edge 53 for sealing sliding between the first section measuring cylinder 5 and the immediately next intermediate measuring cylinder 6 without mutual disengagement, and the first outer edge 53 is used to block the upper end of the next intermediate measuring cylinder to prevent the next intermediate measuring cylinder from continuing to disengage downward from the first section measuring cylinder 5. A first fixing part 5a is arranged on the inner peripheral wall of the side ring wall 52, which is attached to the inner cavity wall of the cylindrical cavity at a position corresponding to the at least two groups of traction ropes 2. In the shown embodiment, the first fixing part 5a is defined as comprising a first fixing ring 51a arranged on the inner cavity wall of the cylindrical cavity and at least two first through cavities 52a arranged on the first fixing ring 51a at a position corresponding to the at least two groups of traction ropes 2, and the first through cavities 52a penetrate through the first fixing ring 51a along the length direction of the cylinder body. It should be understood that the fixing part can also be defined as other structures in different embodiments, for example, at least two fixing blocks arranged on the inner cavity wall of the cylindrical cavity at a position corresponding to each traction rope 2, and the above-mentioned through cavities can be directly arranged on the fixing blocks.

[0037] In the shown embodiment, the intermediate measuring cylinder 6 is defined as a plurality of intermediate measuring cylinders 6 which are slidably sleeved together. For the convenience of description, the intermediate measuring cylinder 6 sleeved with the first section measuring cylinder 5 at the uppermost end is referred to as the first intermediate measuring cylinder 61, the intermediate measuring cylinder 6 sleeved with the last section measuring cylinder 7 at the lowermost end is referred to as the second intermediate measuring cylinder 62, and the at least one intermediate measuring cylinder 6 between the first intermediate measuring cylinder 61 and the second intermediate measuring cylinder 62 is collectively referred to as the third intermediate measuring cylinder 63.

[0038] The first intermediate measuring cylinder 61 has a first cylindrical cavity 611 extending through in the axial direction, and the upper end of the first cylindrical cavity 611 is formed with a first inner rim 612 which is in position-limiting cooperation with the first outer rim 55, the inner diameter of the first inner rim 612 is greater than the outer diameter of the first section measuring cylinder 5, less than the outer diameter of the first outer rim 53, and less than the inner diameter of the first cylindrical cavity 611, and the outer diameter of the first outer rim 53 is less than the inner diameter of the first cylindrical cavity 611, that is, the outer diameter of the first section measuring cylinder 5 < the inner diameter of the first inner rim 612 < the outer diameter of the first outer rim 53 < the inner diameter of the first cylindrical cavity 611. When the first section measuring cylinder 5 is assembled with the first intermediate measuring cylinder 61, the first section measuring cylinder 5 can be arranged in the first cylindrical cavity 611 from bottom to top, and the first section measuring cylinder 5 has a portion which passes out of the first inner rim 612 upwardly and protrudes upwardly at the upper end of the first intermediate measuring cylinder 61, and the lower end of the first section measuring cylinder 5 and the first outer rim 53 are limited in the first cylindrical cavity 611 by the first inner rim 612. When they are in the contracted state, the lower end of the first section measuring cylinder 5 is located at the lower end of the first intermediate measuring cylinder 61, and the upper end of the first section measuring cylinder 5 protrudes at the upper end of the first intermediate measuring cylinder 61; when they are in the expanded state, the portion of the first section measuring cylinder 5 except the first outer rim 53 is exposed upwardly at the upper end of the first telescopic measuring cylinder. The outer periphery of the lower end of the first intermediate measuring cylinder 61 is formed with a second outer rim 613 for sealingly and slidingly connecting the first intermediate measuring cylinder 61 with the third intermediate measuring cylinder 63 located immediately below the lower end of the first intermediate measuring cylinder 61, and the first intermediate measuring cylinder 61 and the third intermediate measuring cylinder 63 cannot be separated from each other. The inner peripheral wall of the first cylindrical cavity 611 is provided with a second fixing portion 61a.

[0039] The second intermediate measuring cylinder 62 has a second cylindrical cavity 621 extending through in axial direction, and an upper end of the second cylindrical cavity 621 is formed with a second inner edge 622 which is limitedly matched with the third intermediate measuring cylinder 63, and an inner diameter of the second inner edge 622 is greater than an outer diameter of the third intermediate measuring cylinder 63 located at the upper end thereof, and is less than an inner diameter of the second cylindrical cavity 621. An outer periphery of a lower end of the second intermediate measuring cylinder 62 is outwardly protruded to form a third outer edge 623 for sealingly sliding and not being separated from the terminal measuring cylinder 7, and the third outer edge 623 is used for stopping an upper end of the terminal measuring cylinder 7 when the second intermediate measuring cylinder 62 is assembled with the terminal measuring cylinder 7, so as to prevent the terminal measuring cylinder 7 from continuously separating downward from the second intermediate measuring cylinder 62. A third fixing part 62a is arranged on an inner periphery wall of the second cylindrical cavity 621. A fourth fixing part 62b is arranged on an outer periphery lower end of the second intermediate measuring cylinder 62, and the fourth fixing part 62b is arranged on an outer wall of the second intermediate measuring cylinder 62 at positions corresponding to the at least two groups of traction ropes 2. In the shown embodiment, the fourth fixing part 62b is defined as including a fourth fixing ring 621b arranged on the outer wall of the second intermediate measuring cylinder 62, and at least two groups of fourth through cavities 622b arranged at positions corresponding to the at least two groups of traction ropes 2, and the fourth through cavities 622b extend through the fourth fixing ring 621b in a length direction of the telescopic cylinder body 1. It should be understood that the fixing part can also be defined as other structures in different embodiments, for example, at least two fixing blocks arranged on the outer wall of the second intermediate measuring cylinder 62 at positions corresponding to each traction rope 2, and the above-mentioned through cavities can be directly arranged on the fixing blocks.

[0040] The third intermediate measuring cylinder 63 has a third cylindrical cavity 631 extending through the third intermediate measuring cylinder 63 in the axial direction. The upper end of the third cylindrical cavity 631 is formed with a third inner edge 632 which is in position-limiting cooperation with a measuring cylinder located at the upper end of the third cylindrical cavity 631. The third inner edge 632 has an inner diameter which is greater than the outer diameter of a measuring cylinder located at the upper end of the third cylindrical cavity 631, smaller than the outer diameter of the inner edge of a measuring cylinder located at the upper end of the third cylindrical cavity 631, and smaller than the inner diameter of the third cylindrical cavity 631. The outer diameter of the third inner edge 632 of the third intermediate measuring cylinder 63 located at the upper end is smaller than the inner diameter of the third cylindrical cavity 631 located at the lower end. When a measuring cylinder is assembled with the third intermediate measuring cylinder 63, the measuring cylinder located at the upper end of the third intermediate measuring cylinder 63 is arranged in the third cylindrical cavity 631 from the lower end to the upper end of the third intermediate measuring cylinder 63. The upper end of the measuring cylinder located at the upper end of the third intermediate measuring cylinder 63 protrudes upwardly beyond the third inner edge 632 and is exposed upwardly beyond the upper end of the third intermediate measuring cylinder 63. The lower end of the measuring cylinder located at the upper end of the third intermediate measuring cylinder 63 is located at the lower end of the third intermediate measuring cylinder 63, and the upper end of the measuring cylinder located at the upper end of the third intermediate measuring cylinder 63 is exposed upwardly beyond the upper end of the third intermediate measuring cylinder 63 when they are in the contracted state. The measuring cylinder located at the upper end of the third intermediate measuring cylinder 63 is exposed upwardly beyond the upper end of the third intermediate measuring cylinder 63 except for the outer edge of the measuring cylinder when they are in the expanded state. The lower end of the third intermediate measuring cylinder 63 is outwardly protruded to form a fourth outer edge 633 for sealingly and slidably connecting the third intermediate measuring cylinder 63 with a measuring cylinder located immediately below the lower end of the third intermediate measuring cylinder 63 without being separated from each other. A fifth fixed portion 63a is arranged on the inner circumferential wall of the third cylindrical cavity 631.

[0041] The end section measuring cylinder 7 has a fourth cylindrical cavity 71 through it along its axial direction, the upper end of the fourth cylindrical cavity 71 is formed with a fourth inner edge 72 which is limitedly matched with the third outer edge 623, the inner diameter of the fourth inner edge 72 is greater than the outer diameter of the second intermediate measuring cylinder 62, less than the outer diameter of the third outer edge 623, and less than the inner diameter of the fourth cylindrical cavity 71, the outer diameter of the third outer edge 623 is less than the inner diameter of the fourth cylindrical cavity 71. When the second intermediate measuring cylinder 62 is assembled with the end section measuring cylinder 7, the second intermediate measuring cylinder 62 is arranged in the fourth cylindrical cavity 71 from bottom to top, and the second intermediate measuring cylinder 62 has a part which penetrates the fourth inner edge 72 upwardly and protrudes upwardly on the upper end of the end section measuring cylinder 7, the lower end of the second intermediate measuring cylinder 62 and the third outer edge 623 are limited in the fourth cylindrical cavity 71 by the fourth inner edge 72. When they are in the contracted state, the lower end of the second intermediate measuring cylinder 62 is located at the lower end of the end section measuring cylinder 7, and the upper end of the second intermediate measuring cylinder 62 protrudes at the upper end of the end section measuring cylinder 7; when they are in the expanded state, the part of the second intermediate measuring cylinder 62 except the third outer edge 623 is exposed upwardly on the upper end of the end section measuring cylinder 7. A sixth fixing part 7a is arranged on the inner circumferential wall of the fourth cylindrical cavity 71. A seventh fixing part 7b is arranged on the outer circumferential wall of the lower end of the end section measuring cylinder 7. The lower end of the end section measuring cylinder 7 protrudes downwardly to form a cylinder 73, and the lower end of the cylinder 73 is provided with a lower annular ring 74 for mounting the filter cover 3 thereon.

[0042] The structures and principles of the second fixing part 61a, the third fixing part 62a, the fifth fixing part 63a, the sixth fixing part 7a and the first fixing part 5a are the same, and the structures and principles of the seventh fixing part 7b and the fourth fixing part 62b are the same, so they will not be described one by one here.

[0043] The filter cover 3 comprises an upper annular ring 31 and a conical cylinder 32 protruding downward from the lower end of the upper annular ring 31, the inner diameter and the outer diameter of the upper annular ring 31 are matched with the lower annular ring 74, and the cylinder 73, the lower annular ring 74, the upper annular ring 31 and the middle part of the conical cylinder 32 are communicated. A hinge seat 33 is arranged between one side end of the upper annular ring 31 and the corresponding position of the lower annular ring 74, and the other end of the upper annular ring 31 away from the hinge seat 33 is detachably connected with the lower annular ring 74 through a fixing piece 34. The conical cylinder 32 is provided with a plurality of filter holes 35 for filtering impurities in the percolate, and a plurality of filter holes 35 are uniformly and evenly distributed on the side wall of the conical cylinder 32 with the center of the lower annular ring 74 as the center, and a plurality of filter holes 35 are distributed from dense to sparse as the diameter of the conical cylinder 32 increases. It should be understood that the opening position and number of the filter holes 35 are not limited to the above description, and in different embodiments, the filter holes 35 can be set according to different needs, so this place will not be described one by one.

[0044] The fixing piece 34 comprises a limiting block 341, a screw rod 342 arranged at the end of the limiting block 341 and a nut 343 screwed at the end of the screw rod 342. A through hole 344 is arranged between the upper annular ring 31 and the lower annular ring 74, the inner diameter of the through hole 344 is matched with the outer diameter of the screw rod 342, the screw rod 342 is arranged in the through hole 344, the screw rod 342 extends into the through hole 344 from one end of the through hole 344 and extends out of the through hole 344 from the other end of the through hole 344, and the nut 343 is screwed on the part of the screw rod 342 extending out of the through hole 344.

[0045] The working mode of one of the embodiments of the telescopic percolate liquid level shielding measuring cylinder is as follows: first, the outer driving part of the two traction ropes 2 is connected with the external power equipment, the force applying end is sequentially threaded through the through cavity of the fourth fixed part 62b and the seventh fixed part 7b from top to bottom, and then is bent upwards at the lower end of the last section measuring cylinder 7, and then is sequentially threaded through the sixth fixed part 7a, the third fixed part 62a, the fifth fixed part 63a, the second fixed part 61a and the first fixed part 5a from bottom to top, and finally forms a knot 21 at the upper end of the first fixed ring 51a. In the unused state, the traction rope 2 is retracted by the power equipment, and the telescopic cylinder body 1 is in the contracted state under the pulling of the traction rope 3, at this time, the first section measuring cylinder 5, the intermediate measuring cylinder 6 and the last section measuring cylinder 7 are sleeved together from inside to outside. When the liquid level of the percolate needs to be measured, the external power equipment is started to release the traction rope 2, and as the traction rope 2 is elongated, the telescopic cylinder body 1 is gradually stretched, and the upper end of the intermediate measuring cylinder 6 and the last section measuring cylinder 7 is limited to the lower end of the previous section measuring cylinder.

[0046] When the filter cover 3 extends into the leachate, the leachate sewage enters the telescopic cylinder 1 from the inside of the pool liquid through the tapered cylinder 32, and because the side wall of the first measuring cylinder 5 is provided with a plurality of air holes 52, the telescopic cylinder 1 will form a large atmospheric communication pipe under the action of balanced air resistance. Because the tapered cylinder 32 is provided with a plurality of filter holes 35, when the leachate enters the telescopic cylinder 1, the floating cover layer of the sewage in the leachate is isolated outside the telescopic cylinder 1 by the tapered cylinder, which is effectively shielded. The liquid level of the leachate will fluctuate with the insertion of the telescopic cylinder 1, but the interaction between the internal friction of the sewage and the balanced air resistance will inhibit the fluctuation of the liquid level, so that the liquid level in the telescopic cylinder 1 can change with the change of the leachate pool liquid level, and the relative stability of the liquid level can be maintained, facilitating subsequent liquid level measurement of the liquid level by the staff.

[0047] When the device is used for a period of time, the tapered cylinder 32 will adhere to a lot of dirt, which may block the filter holes 35 and affect the normal use of the device, so it needs to be cleaned in time. When cleaning is needed, the power equipment is started to wind up the traction rope 2, so that the telescopic cylinder 1 is contracted to the initial state, at this time the telescopic cylinder 1 as a whole is no longer located in the leachate pool. At this time, the nut 343 is rotated to be unscrewed from the end of the screw rod 342, and the limiting block 341 is held to pull out the screw rod 342 from the insertion hole 344, at this time the fixing part 34 is released from the fixed state of the filter cover 3, and the filter cover 3 is rotated and opened with the hinge point of the hinge seat 33 as the center, and the surface dirt of the filter cover 3 is cleaned with a high-pressure water gun. After cleaning, the filter cover 3 is returned to the original position by reversing the above steps.

[0048] Compared with the prior art, the telescopic leachate liquid level shielding measuring cylinder of the utility model is provided with a filter cover with a dirt filtering function at the bottom of the telescopic cylinder, and the leachate is filtered before entering the cylinder to avoid dirt floating and entering to affect the measurement of the liquid level height by the measuring device, so that the liquid level measurement data is more accurate.

Claims

1. A telescoping leachate level shielded measuring cylinder comprising a telescoping cylinder body, characterized by: The telescopic cylinder comprises a first measuring cylinder, a last measuring cylinder and an intermediate measuring cylinder arranged between the first measuring cylinder and the last measuring cylinder, the first measuring cylinder is provided with a gas hole, the first measuring cylinder and the intermediate measuring cylinder and the intermediate measuring cylinder and the last measuring cylinder are in sliding connection, and the lower end of the last measuring cylinder is provided with a filter cover, and a plurality of filter holes are formed in the filter cover.

2. The retractable leachate level shielded measuring cylinder of claim 1, wherein: The first measuring cylinder, the intermediate measuring cylinder and the last measuring cylinder are all hollow measuring cylinders provided with cylindrical cavities in the middle, and the diameters of the first measuring cylinder, the intermediate measuring cylinder and the last measuring cylinder gradually increase from small to large; when the telescopic cylinder is in a contracted state, the first measuring cylinder, the intermediate measuring cylinder and the last measuring cylinder are gradually sleeved together from inside to outside, and when the telescopic cylinder is in an extended state, the upper ends of the intermediate measuring cylinder and the last measuring cylinder are limited at the lower ends of the respective last measuring cylinders.

3. The retractable leach level shield gauge cylinder of claim 2, wherein: The lower periphery of the first measuring cylinder and the intermediate measuring cylinder is provided with an outer edge for limiting the respective next measuring cylinder to prevent the next measuring cylinder from being separated, and the outer diameter of the outer edge is smaller than the inner diameter of the cylindrical cavity of the next measuring cylinder.

4. The retractable leach level shield gauge cylinder of claim 3, wherein: The upper end of the cylindrical cavity of the intermediate measuring cylinder and the last measuring cylinder is provided with an inner edge, the inner diameter of the inner edge of the intermediate measuring cylinder and the last measuring cylinder is smaller than the inner diameter of the respective cylindrical cavity, and the inner diameter of the inner edge is larger than the outer diameter of the respective last measuring cylinder and smaller than the outer diameter of the outer edge of the last measuring cylinder, so that the intermediate measuring cylinder and the last measuring cylinder can slide along the length direction of the respective last measuring cylinder but not separate from the last measuring cylinder.

5. The retractable leach level shield gauge cylinder of claim 4, wherein: The intermediate measuring cylinder is defined as a plurality of intermediate measuring cylinders which are sequentially and slidably sleeved from top to bottom, the inner diameter of the inner edge of the intermediate measuring cylinder adjacent to the first measuring cylinder is larger than the outer diameter of the first measuring cylinder and smaller than the outer diameter of the outer edge thereof; and the inner diameter of the inner edge of the remaining intermediate measuring cylinders is larger than the outer diameter of the previous intermediate measuring cylinder and smaller than the outer diameter of the outer edge thereof.

6. The retractable leach level shield gauge cylinder of claim 1, wherein: The lower end of the last measuring cylinder is provided with a cylinder, the lower end of the cylinder is provided with a lower circular ring, the filter cover comprises an upper circular ring and a conical cylinder formed by protruding downward from the lower end of the upper circular ring, the inner and outer diameters of the upper circular ring and the lower circular ring are matched, and a hinge seat is jointly arranged between one side end of the upper circular ring and the corresponding position of the lower circular ring, and the other end of the upper circular ring away from the hinge seat is detachably connected with the lower circular ring through a fixing piece.

7. The retractable leach level shield gauge cylinder of claim 6, wherein: The fixing piece comprises a limiting block, one end of the limiting block is fixedly provided with a screw rod, a plug hole matched with the outer diameter of the screw rod is jointly formed between the upper circular ring and the lower circular ring, the screw rod is inserted into one end of the plug hole and protrudes from the other end of the plug hole, and a nut is screwed on the end of the screw rod protruding out of the plug hole.

8. A telescoping leachate level shielded measuring cylinder as claimed in any one of claims 1 to 7, characterised in that: The measuring device further comprises at least two groups of traction ropes for stretching and contracting the measuring tubes, the force-receiving ends of the at least two groups of traction ropes being connected to the outer driving part for being stretched and contracted under the action of the outer driving part, and the force-exerting ends of the at least two groups of traction ropes being sequentially threaded through the cylindrical spaces of the last measuring tube and the middle measuring tube from bottom to top and then fixed to the first measuring tube.

9. The retractable leach level shield gauge cylinder of claim 8, wherein: The lower ends of the cylindrical cavities of the first measuring tube, the middle measuring tube and the last measuring tube are provided with fixing parts which are attached to the inner cavity walls of the cylindrical cavities at positions corresponding to the at least two groups of traction ropes, and the force-exerting ends of the at least two groups of steel wires are sequentially threaded through the fixing parts of the last measuring tube and the middle measuring tube and then fixed to the fixing part of the first measuring tube.

10. The retractable leach level shield gauge cylinder of claim 9, wherein: The fixing part comprises a fixing ring which is annularly arranged on the inner cavity wall of the cylindrical cavity and at least two groups of through cavities which are arranged on the fixing ring at positions corresponding to the at least two groups of traction ropes, the through cavities penetrating the fixing ring along the length direction of the tube body, and the force-exerting ends of the at least two groups of traction ropes are sequentially threaded through the fixing rings of the last measuring tube, the middle measuring tube and the first measuring tube and then formed into a knot.

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