A sewer low water level sampling device and method

Abstract

The application provides a low water level sampling device and method for a drainage pipeline, which comprises a circular frame, an air bag unit, a water inlet pipeline, a hand rope, a movable handle and a plastic soft pad; the top of the circular frame is provided with an inflation valve mounting port, a deflation valve mounting port and a deflation valve opening micro inclined rod; the outer lateral wall of the circular frame is provided with the movable handle, and the bottom is provided with the plastic soft pad; the inside of the plastic soft pad is provided with the water inlet pipeline which is connected with the inside of the circular frame; the circular frame rope of the hand rope is connected with the movable handle, and the micro inclined rod of the hand rope is connected with the deflation valve opening micro inclined rod; the inside of the circular frame is provided with the air bag unit which is connected with the inflation valve mounting port and the deflation valve mounting port. The device can be used for low water level pipeline sampling operation, and does not need to be connected with power to provide power, and is simple and convenient to operate, and is convenient to popularize, and is especially suitable for low water level pipeline water quality sampling in the field.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sewer network water sample monitoring and analysis, and particularly relates to a sewer low water level sampling device and method. BACKGROUND

[0002] In order to understand the water quality concentration analysis of the entire sewage system and scientifically formulate the pipe network quality improvement and efficiency improvement strategy, the premise is to scientifically and reasonably sample, not only to analyze the water quality of full water pipes and normal water level pipes, but also to analyze the water quality of low water level pipes, and scientifically diagnose the sewage system and external water intrusion.

[0003] At present, most simple sampling devices are applicable to the condition that the pipe water level is deep, and only the entire device can be immersed below the pipe water level to take water samples from the pipe. For the pipe with low water level, there is no available device for sampling, and the problem of water quality sampling of low water level pipe cannot be solved. SUMMARY

[0004] The purpose of the present application is to overcome the shortcomings of the prior art, and the present application provides a sewer low water level sampling device and method, which can be used for sampling operation of low water level pipes. The device does not need to be powered by electricity, is simple and convenient to operate, is convenient to popularize, and is especially suitable for water quality sampling of low water level pipes in the wild.

[0005] In order to realize the above technical features, the purpose of the present application is realized as follows: a sewer low water level sampling device, which comprises a circular frame, an air bag unit, a water inlet pipe, a hand rope, a movable handle and a plastic soft pad;

[0006] The top of the circular frame is provided with an inflation valve mounting port, a deflation valve mounting port and a deflation valve opening micro inclined rod; the outer wall of the circular frame is provided with a movable handle, and the bottom is provided with a plastic soft pad; the plastic soft pad is internally provided with a water inlet pipe for communication with the inside of the circular frame;

[0007] The circular frame rope of the hand rope is connected with the movable handle, and the micro inclined rod rope of the hand rope is connected with the deflation valve opening micro inclined rod;

[0008] The inside of the circular frame is provided with an air bag unit, which is in communication with the inflation valve mounting port and the deflation valve mounting port.

[0009] The deflation valve opening micro inclined rod is hinged at the top of the circular frame through a fulcrum, and the distance between the fulcrum of the deflation valve opening micro inclined rod and the deflation valve mounting port is less than one half of the distance between the fulcrum and the micro inclined rod rope.

[0010] The deflation valve opening micro inclined rod adopts light section material, and the end of the deflation valve opening micro inclined rod is in contact with the deflation valve of the air bag unit through a reverse triangular protrusion.

[0011] The active handle is connected with the circular frame body through an active connection.

[0012] The air bag unit top is provided with an inflation valve for inflation and a deflation valve for deflation; the inflation valve is installed in the inflation valve installation port, and the deflation valve is installed in the deflation valve installation port.

[0013] The plastic soft pad is a soft rubber pad with a density less than water, and the shape is a cylinder, and the plastic soft pad is sealingly connected with the lower part of the circular frame body.

[0014] The water inlet pipeline comprises a water inlet straight pipe, a water inlet folding telescopic hose and a hard plastic spherical water inlet; the water inlet straight pipe is arranged in the interior of the plastic soft pad, and the tail end of the water inlet straight pipe is connected with the hard plastic spherical water inlet through the water inlet folding telescopic hose.

[0015] The hard plastic spherical water inlet is made of hard plastic with a density greater than 1.0 kg / L, and the water inlet is distributed in the obliquely lower part of the hard plastic ball.

[0016] The method for sampling by using the low water level sampling device of the drainage pipeline comprises the following steps:

[0017] Step one: initially, the air bag unit is inflated through the inflation valve, and after the air bag unit is fully inflated, the device is lowered from the inspection well into the low water level pipeline through the circular frame body lifting rope;

[0018] Step two: after the plastic soft pad contacts the pipeline bottom, the micro-inclined rod lifting rope is lifted to open the micro-inclined rod and the deflation valve;

[0019] Step three: the air bag unit is contracted, and the water at the low water level of the pipeline will enter the circular frame body through the hard plastic spherical water inlet, the water inlet folding telescopic hose and the water inlet straight pipe in sequence;

[0020] Step four: after the water sample is taken, the circular frame body is slowly lifted through the circular frame body lifting rope, the circular frame body is deflected under the action of the eccentric force, and the plastic soft pad faces upward;

[0021] Step five: after the device is taken out of the inspection well, the air bag unit is inflated through the inflation valve to discharge the internal water sample, and the next sampling is sequentially performed.

[0022] The present application has the beneficial effects:

[0023] 1、The device is initially inflated by the inflation valve, and after the air bag is fully inflated, the device is lowered from the inspection well into the low water level pipeline by the round frame lifting rope, and after the plastic soft pad contacts the bottom of the pipe, the micro inclined rod lifting rope is lifted to open the deflation valve, at which time the air bag unit is contracted, and the water in the low water level pipeline enters the round frame through the hard plastic spherical water inlet, the water inlet folding telescopic hose and the water inlet straight pipe, and after the water sample is taken, the round frame is slowly lifted by the round frame lifting rope, and under the action of the eccentric force, the round frame is deflected, and the plastic soft pad is upward, and after the device is taken out of the inspection well, the air bag unit is inflated by the inflation valve to discharge the internal water sample, and the next sampling is carried out in turn. The integrated simple device does not need to be connected to provide power, is simple and convenient to operate, is convenient to popularize, and is especially suitable for water quality sampling of low water level pipeline in the wild.

[0024] 2、The air bag unit, the water inlet pipeline, the hand rope, the movable handle and the plastic soft pad are integrated in the round frame, so that the device is modularized, has high integration degree, is light and simple, and is beneficial to popularization.

[0025] 3、The device only needs to be connected to a conventional inflator, and sampling can be realized by hand lifting without additional energy and equipment driving.

[0026] 4、The device can make up the technical blank of low water level pipeline sampling, and realizes convenient and rapid sampling of low water level pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0027] The application will be further described below in combination with the drawings and examples.

[0028] Figure 1 It is a front view of the application.

[0029] Figure 2 It is a side view of the application.

[0030] Figure 3 It is a main sectional view of the application.

[0031] Figure 4 It is a plan view.

[0032] In the figure: round frame 1, inflation valve installation port 11, deflation valve installation port 12;

[0033] Air bag unit 2, inflation valve 21, deflation valve 22;

[0034] Water inlet pipeline 3, water inlet straight pipe 31, water inlet folding telescopic hose 32, hard plastic spherical water inlet 33;

[0035] Hand rope 4, round frame lifting rope 41, deflation valve opening micro inclined rod 42, micro inclined rod lifting rope 43;

[0036] Activity handle 5;

[0037] 6. Plastic cushion. Detailed Implementation

[0038] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0039] Example 1:

[0040] Please see Figures 1-4 A low-water-level sampling device for drainage pipes includes a circular frame 1, an airbag unit 2, a water inlet pipe 3, a carrying rope 4, a movable handle 5, and a plastic pad 6. The circular frame 1 has an inflation valve mounting port 11, a deflation valve mounting port 12, and a deflation valve opening micro-slant rod 42 at its top. The movable handle 5 is installed on the outer wall of the circular frame 1, and the plastic pad 6 is located at its bottom. The water inlet pipe 3, which communicates with the interior of the circular frame 1, is located inside the plastic pad 6. The circular frame carrying rope 41 of the carrying rope 4 is connected to the movable handle 5, and the micro-slant rod carrying rope 43 of the carrying rope 4 is connected to the deflation valve opening micro-slant rod 42. The airbag unit 2 is located inside the circular frame 1 and is connected to the inflation valve mounting port 11 and the deflation valve mounting port 12. Using the above-described sampling device, initially, the airbag unit 2 is inflated through the inflation valve 21. After the airbag is fully inflated, the device is lowered from the inspection well into the low-water-level pipeline through the circular frame lifting rope 41. Once the plastic pad 6 contacts the bottom of the pipe, the miniature inclined rod lifting rope 43 is lifted, and the miniature inclined rod 42 opens the deflation valve 22. At this time, the airbag unit 2 contracts, and the low-water-level water in the pipeline will sequentially enter the circular frame 1 through the rigid plastic spherical inlet 33, the inlet folding telescopic hose 32, and the inlet straight pipe 31. After the water sample is full, the circular frame 1 is slowly lifted through the circular frame lifting rope 41. Under the action of eccentric force, the circular frame deflects, and the plastic pad 6 faces upward. After the device is removed from the inspection well, the airbag unit 2 is inflated through the inflation valve 21 to expel the internal water sample, and then the next sampling is performed. This integrated and simple device does not require electricity, is easy to operate, and is easy to promote, especially suitable for water quality sampling in low-water-level pipelines in the field.

[0041] Furthermore, the micro-slant rod 42 for opening the vent valve is hinged to the top of the circular frame 1 via a fulcrum, and the distance between the fulcrum of the micro-slant rod 42 and the vent valve mounting port 12 is less than half the distance between the fulcrum and the lifting rope 43 of the micro-slant rod. In use, the distance between the lifting rope of the micro-slant rod and the fulcrum can be adjusted to ensure that the lifting rope can easily open the vent valve, ensuring that the water sample can be smoothly drawn into the circular frame.

[0042] Further, the deflation valve opening micro inclined rod 42 adopts light section, and the end of the deflation valve opening micro inclined rod 42 is in contact with the deflation valve 22 of the air bag unit 2 through an inverted triangular protrusion. In use, the deflation valve can be lifted upward by the micro inclined rod to compress the deflation valve spring and discharge the gas in the air bag. In use, the triangular protrusion can be conical according to the actual design, so as to ensure that the deflation valve spring can be compressed under the control of the fulcrum to form negative pressure in the circular frame to suck water samples.

[0043] Further, the movable handle 5 is movably connected with the circular frame 1. In use, the side of the circular frame can be movably connected or fixedly connected with the handle.

[0044] Further, the air bag unit 2 is provided with an inflation valve 21 and a deflation valve 22 at the top for inflation and deflation, respectively. The inflation valve 21 is correspondingly installed in the inflation valve installation port 11, and the deflation valve 22 is correspondingly installed in the deflation valve installation port 12.

[0045] Further, the plastic soft pad 6 is a soft rubber pad with a density less than water, and is in the shape of a cylinder. The plastic soft pad 6 is sealingly connected with the lower part of the circular frame 1. In use, the soft rubber pad with a density less than water can not be provided.

[0046] Further, the water inlet pipeline 3 includes a water inlet straight pipe 31, a water inlet folding telescopic hose 32, and a hard plastic spherical water inlet 33. The water inlet straight pipe 31 is arranged in the interior of the plastic soft pad 6, and the end of the water inlet straight pipe 31 is connected with the hard plastic spherical water inlet 33 through the water inlet folding telescopic hose 32.

[0047] Further, the hard plastic spherical water inlet 33 is made of hard plastic with a density greater than 1.0 kg / L, and the water inlets are distributed on the obliquely lower side of the hard plastic sphere. In use, the hard plastic sphere can not be provided according to actual needs, and a material with a density greater than water can be directly wrapped at the end of the water inlet pipeline, so as to ensure that the pipeline can sink in water.

[0048] Embodiment 2:

[0049] The method for sampling by using the low water level sampling device for a drainage pipeline includes the following steps:

[0050] Step one: initially, the air bag unit 2 is inflated through the inflation valve 21, and after the air bag unit 2 is fully inflated, the device is lowered from the inspection well to the low water level pipeline through the circular frame lifting rope 41;

[0051] Step two: after the plastic soft pad 6 contacts the bottom of the pipeline, the micro inclined rod lifting rope 43 is lifted to open the deflation valve 22 through the deflation valve opening micro inclined rod 42;

[0052] Step three: the air bag unit 2 is contracted, and the water at low water level in the pipeline will enter the circular frame 1 through the hard plastic spherical water inlet 33, the water inlet folding telescopic hose 32 and the water inlet straight pipe 31 in sequence;

[0053] Step four: after the water sample is taken, the circular frame 1 is slowly lifted through the circular frame lifting rope 41, and the circular frame is deflected under the action of the eccentric force, and the plastic soft pad 6 faces upward;

[0054] Step five: after the device is lifted out of the inspection well, the air bag unit 2 is inflated through the inflation valve 21 to discharge the internal water sample, and the next sampling is sequentially performed.

Claims

1. A low-water-level sampling device for drainage pipes, characterized in that, It includes a circular frame (1), an airbag unit (2), a water inlet pipe (3), a carrying rope (4), a movable handle (5), and a plastic pad (6); the top of the circular frame (1) is provided with an inflation valve mounting port (11), a deflation valve mounting port (12), and a deflation valve opening micro-slant rod (42); the outer side wall of the circular frame (1) is provided with a movable handle (5), and the bottom is provided with a plastic pad (6); the inside of the plastic pad (6) is provided with a water inlet pipe (3) for communicating with the inside of the circular frame (1); the circular frame carrying rope (41) of the carrying rope (4) is connected to the movable handle (5), and the micro-slant rod carrying rope (43) of the carrying rope (4) is connected to the deflation valve opening micro-slant rod (42). The circular frame (1) is connected to the airbag unit (2), which is connected to the inflation valve mounting port (11) and the deflation valve mounting port (12). The deflation valve opening micro-slant rod (42) is hinged to the top of the circular frame (1) through a fulcrum, and the distance between the fulcrum of the deflation valve opening micro-slant rod (42) and the deflation valve mounting port (12) is less than half the distance between the fulcrum and the micro-slant rod lifting rope (43). The deflation valve opening micro-slant rod (42) is made of lightweight profile, and the end of the deflation valve opening micro-slant rod (42) contacts the deflation valve (22) of the airbag unit (2) through an inverted triangular protrusion. The movable handle (5) is movably connected to the circular frame (1).

2. The low-water-level sampling device for drainage pipes according to claim 1, characterized in that, The airbag unit (2) is provided with an inflation valve (21) for inflation and a deflation valve (22) for deflation on its top; the inflation valve (21) is installed in the inflation valve mounting port (11) and the deflation valve (22) is installed in the deflation valve mounting port (12).

3. The low-water-level sampling device for drainage pipes according to claim 2, characterized in that, The plastic pad (6) is a soft plastic pad with a density less than that of water and is cylindrical in shape. The plastic pad (6) is sealed to the lower part of the circular frame (1).

4. The low-water-level sampling device for drainage pipes according to claim 2, characterized in that, The water inlet pipe (3) includes a straight water inlet pipe (31), a flexible water inlet folding hose (32), and a rigid plastic spherical water inlet (33); the straight water inlet pipe (31) is located inside the plastic pad (6), and the end of the straight water inlet pipe (31) is connected to the rigid plastic spherical water inlet (33) through the flexible water inlet folding hose (32).

5. The low-water-level sampling device for drainage pipes according to claim 4, characterized in that, The rigid plastic spherical inlet (33) is made of rigid plastic with a density greater than 1.0 kg / L, and the inlet is located diagonally below the rigid plastic sphere.

6. A method for sampling using the low-water-level sampling device for drainage pipes as described in any one of claims 4-5, characterized in that, Includes the following steps: Step 1: Initially, inflate the airbag unit (2) through the inflation valve (21). After the airbag unit (2) is fully inflated, lower the device from the inspection well into the low water level pipeline through the lifting rope (41) of the circular frame. Step 2: After the plastic pad (6) touches the bottom of the pipe, lift the miniature inclined rod rope (43) and open the miniature inclined rod (42) through the vent valve to open the vent valve (22). Step 3: The airbag unit (2) contracts, and the water at the low water level in the pipeline will enter the circular frame (1) through the rigid plastic spherical inlet (33), the water inlet folding telescopic hose (32), and the water inlet straight pipe (31) in sequence. Step 4: After the water sample is full, slowly lift the circular frame (1) using the lifting rope (41). Under the action of eccentric force, the circular frame will deflect and the plastic pad (6) will face upward. Step 5: After the device is removed from the inspection well, inflate the airbag unit (2) through the air valve (21) to discharge the internal water sample, and then perform the next sampling in sequence.

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