On-site processing and testing equipment for barrier materials

Abstract

The present invention discloses an on-site processing and testing device for barrier materials, comprising: a welding unit for welding barrier materials and a testing unit for testing the air tightness of the barrier materials after welding, wherein the welding unit and the testing unit are detachably connected. Through the above-mentioned method, the on-site processing and testing device for barrier materials of the present invention can replace and adjust the heating plate according to the welding width required for on-site barrier material construction to ensure welding quality and airtightness effect, and can also perform real-time testing on each weld, thereby improving the efficiency of testing and the accuracy of data.

Description

Technical Field

[0001] The invention relates to the field of soil remediation, and in particular to an on-site processing and testing device for barrier materials. Background Art

[0002] In recent years, the country has attached great importance to environmental protection and governance, and has continuously increased its support for soil remediation. With the promulgation and implementation of the "Soil Pollution Prevention and Control Law" and the "Soil Pollution Prevention and Control Action Plan", the remediation concept of "risk control as the goal" has gradually been recognized by domestic environmental management departments. As one of the main implementation technologies for risk control, soil barrier technology has a short processing cycle and low application cost. As more and more polluted sites do not require excavation construction in land planning, the application of this technology in China will also become more extensive.

[0003] Barrier technology places contaminated soil or treated soil in an impermeable barrier landfill composed of impermeable barrier materials such as high-density polyethylene film (HDPE), or blocks the migration and diffusion of pollutants in the soil by laying a barrier layer, so as to isolate the contaminated soil from the surrounding environment, prevent pollutants from contacting the human body and migrating with precipitation or groundwater, thereby causing harm to the human body and the surrounding environment. On the one hand, this technology can isolate pollutants in the soil from migrating to the surrounding environment, and on the other hand, it can make the pollutants naturally degrade in the barrier area. One of the main key technical parameters that affect the remediation effect of soil barrier landfill technology is the performance of the barrier material, that is, the airtightness of the barrier material (high-density polyethylene film (HDPE)).

[0004] At present, in the process of soil barrier landfill construction, the method generally adopted is to entrust a third party to conduct on-site testing and laboratory testing, and the on-site rapid detection adopts the hand pressure pump pressure measurement method. The above two methods have the following problems: first, they cannot be tested immediately during the construction process and cannot verify the construction effect of the on-site barrier materials; second, the air tightness of the hand pump is not rigorous and the data accuracy is not high. Summary of the invention

[0005] The purpose of the present invention is to solve two problems in the construction process of soil barrier landfill. First, it is impossible to conduct real-time detection during the construction process and to verify the construction effect of the on-site barrier material; second, the air tightness of the hand pump is not rigorous and the data accuracy is not high.

[0006] In order to solve the above technical problems, a technical solution adopted by the present invention is:

[0007] Provided is an on-site processing and testing device for barrier materials, comprising: a welding unit for welding the barrier materials and a testing unit for testing the air tightness of the barrier materials after welding, wherein the welding unit and the testing unit are detachably connected.

[0008] The welding unit includes a HDPE film hot melt welding machine body, a heating unit and a telescopic fixing unit. The heating unit includes a supporting platform, a heating plate, a fixing platform, a fixing slot and a fixing strip. The supporting platform and the telescopic fixing unit are arranged on the base of the HDPE hot melt welding machine body. The fixing platform and the fixing strip are respectively arranged on both sides of the supporting platform. The heating plate is movably arranged on the supporting platform between the fixing platform and the fixing strip for heating. The fixing slot is arranged on the inner wall of the fixing platform. One end of the heating plate is detachably connected to the fixing slot.

[0009] The telescopic fixing unit comprises a base telescopic rod and a slidable sleeve, the base telescopic rod comprises a fixed tube, a movable tube, and a locking device, the movable tube is nested and connected with the fixed tube, and the fixed tube is provided with a locking device for loosening or fixing and locking the movable tube.

[0010] The head end of the movable tube is movably arranged in the fixed tube, one end of the slidable sleeve for fixing the position of the heating plate is detachably connected to the end of the movable tube, and the other end of the slidable sleeve is detachably connected to the fixed clip strip to adjust the position of the slidable sleeve.

[0011] The detection unit includes an automatic pressurizing device and an integrated inflation unit. The integrated inflation unit includes an inflation pipe and an inflation probe. One end of the inflation pipe is connected to the automatic pressurizing device, and the other end is connected to the inflation probe.

[0012] In a preferred embodiment of the present invention, the HDPE hot melt welding machine body is electrically heated.

[0013] In a preferred embodiment of the present invention, the main body of the HDPE hot-melt welding machine is a draw-plate structure.

[0014] In a preferred embodiment of the present invention, the heating plate is made of a heat conductive material.

[0015] In a preferred embodiment of the present invention, the diameter of the movable tube is smaller than the diameter of the fixed tube.

[0016] In a preferred embodiment of the present invention, the telescopic fixing unit is arranged on the outer side of the fixing clip.

[0017] In a preferred embodiment of the present invention, a locking device is provided on the wall of the fixed pipe close to the opening of the fixed pipe.

[0018] In a preferred embodiment of the present invention, one end of the slidable sleeve is connected to the movable tube via a buckle, and a buckle connected to the fixed clip strip is provided at the bottom of the other end of the slidable sleeve.

[0019] In a preferred embodiment of the present invention, the inflation probe and the inflation pipe are an integrated structure.

[0020] In a preferred embodiment of the present invention, the inflation probe is connected to the inflation pipe by means of threads / bolts.

[0021] The beneficial effects of the present invention are: the heating plate can be replaced and adjusted according to the welding width required for on-site barrier material construction to ensure welding quality and airtightness, and each weld can be detected in real time, thereby improving the efficiency of detection and the accuracy of data. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0023] Figure 1 It is a structural schematic diagram of a welding unit in a preferred embodiment of an on-site processing and testing device for barrier materials of the present invention;

[0024] Figure 2 It is a structural schematic diagram of a detection unit in a preferred embodiment of an on-site processing detection device for barrier materials of the present invention. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figure 1-2 , the embodiment of the present invention includes:

[0027] An on-site processing and testing device for barrier materials can inspect the construction effect of barrier materials on site in real time and form overall synchronization with the construction of barrier materials. Its structure mainly includes a welding unit for barrier materials and a testing unit for testing the air tightness of the barrier materials after welding.

[0028] (1) Welding unit

[0029] The welding unit realizes the barrier material welding function, so that the barrier material forms a closed space. The welding unit includes a HDPE film hot-melt welding machine body, a heating unit and a telescopic fixing unit.

[0030] The main body of the HDPE hot melt welding machine adopts electric heating and is a draw plate structure. The barrier material is heated and melted by the heating plate, and then connected together after being butted and fused. The temperature of the heating plate is set to the welding temperature according to the welding process parameters given by the welding machine to achieve temperature adjustability.

[0031] The heating unit includes a supporting platform 2, a heating plate 3, a fixing platform 4, a fixing slot, and a fixing strip 5. The supporting platform and the telescopic fixing unit are arranged on a base 1 of the HDPE hot melt welding machine body. The base is provided with rollers. The fixing platform and the fixing strip are respectively arranged on both sides of the supporting platform. The heating plate is movably arranged on the supporting platform between the fixing platform and the fixing strip for heating. The telescopic fixing unit is arranged on the outside of the fixing strip.

[0032] The fixing slot is provided on the inner wall of the fixing platform for fixing and buckling the heating plate. One end of the heating plate is detachably connected to the fixing slot, so that heating plates of different widths (15CM, 20CM, 25CM) can be installed on the supporting platform. The heating plate is made of a material that is easy to conduct heat.

[0033] The telescopic fixing unit includes a base telescopic rod and a slidable sleeve 13. The base telescopic rod includes a fixed tube 6, a movable tube 7, and a locking device 8. The fixed tube is a hollow structure, and the movable tube is nested in the fixed tube. When the movable tube extends outward, the length of the base telescopic rod increases, and when the movable tube retracts inward, the length of the base telescopic rod decreases. The diameter of the movable tube is smaller than the diameter of the fixed tube.

[0034] A locking device is arranged on the wall of the fixed tube near the opening of the fixed tube. The locking device is a locking mechanism used to loosen or lock the movable tube to adjust the length of the telescopic fixed unit.

[0035] The head end of the movable tube is movably arranged in the fixed tube, one end of the slidable sleeve for limiting the position of the heating plate is detachably connected to the end of the movable tube, and the other end of the slidable sleeve is clamped with the fixed clip, wherein the slidable sleeve and the movable tube are embeddedly connected via a clip 9, and the clip is provided at the bottom of the slidable sleeve, and the clip is clamped with the fixed clip.

[0036] When heating plates of different widths are required, first move the slidable sleeve to the outside, then place the required heating plate on the supporting platform, and fix one end of the heating plate through a fixed slot; adjust the length of the movable rod to drive the slidable sleeve to move to the corresponding position on the side of the heating plate; tighten the locking device to fix the base telescopic rod, thereby completing the positioning and fixation of the entire heating plate.

[0037] In this way, heating plates of different widths can be selected and replaced according to the weld width of the barrier material construction on site. When the soil barrier technology construction is more stringent, the requirements of different weld widths and contact areas during barrier material welding can be met. Before the barrier material is welded, the width of the heating plate is set to increase the heated area of ​​the barrier material and the width of the weld formed by the butt fusion of the barrier materials, thereby ensuring the welding quality and airtightness effect.

[0038] (2) Detection unit

[0039] The detection unit realizes the air tightness detection function of the barrier material and can check the construction effect of the barrier material on site in real time. The detection unit can be movably arranged at any position around the welding unit. The detection unit can be used in combination with the welding unit or separated from the welding unit and used alone. The detection unit includes an automatic pressurizing device and an integrated inflation unit.

[0040] The integrated inflation unit includes an inflation pipe 10 and an inflation probe 11. One end of the inflation pipe is connected to the automatic pressurizing device 12, and the other end is connected to the inflation probe. The automatic pressurizing device has a pressure display meter to realize the automatic inflation and pressurization function and display the pressure value in real time.

[0041] The inflation probe and the inflation pipe can be an integrated structure to achieve the integration of the inflation probe and the inflation pipe, avoid needle damage and replacement of the inflation needle. In addition, the inflation probe and the inflation pipe can also be connected by threads / bolts, etc., wherein the inflation probe is made of steel that is not easy to bend.

[0042] In view of the characteristics of hot-melt welding that forms double-track welds and an air cavity is reserved in the middle of the weld, a detection unit is used to detect the air tightness of the weld: when a weld of the barrier material is completed, both ends of the weld air cavity are sealed, and the automatic pressurizing device is started. The gas is pressurized to 250kPa through the integrated inflation unit to maintain the air cavity for 3-5 minutes. The air pressure is not lower than 240kPa, and then a hole is opened at the other end of the weld to release the air. If the pressure gauge pointer can quickly return to zero, the barrier material construction is deemed to be qualified for air tightness.

[0043] The beneficial effects of the on-site processing and testing equipment for barrier materials of the present invention are:

[0044] 1. In terms of the welding width of the barrier material, the welding machine of this system uses heating plates of different widths. The heating plates can be replaced and adjusted according to the welding width required for the on-site barrier material construction to ensure the welding quality and airtightness effect.

[0045] 2. In terms of real-time detection, this system uses air pressure detection equipment to detect the welds of barrier materials, and can detect each weld to achieve real-time detection and high efficiency. The addition of an integrated air-filled pipe system and an automatic pressurizing device avoids manual pressurization and improves data accuracy.

[0046] 3. In terms of equipment optimization, the heating plate of this system is set to be loadable and adjustable, which is different from the existing general hot melt machine structure, that is, a single hot melt machine can only be set with a heating plate of the same width. This system method realizes that a single hot melt machine can be set with adjustable heating plates of different widths, which greatly reduces the consumption of mechanical costs and indirectly improves the utilization rate of equipment.

[0047] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An on-site processing and testing device for barrier materials, characterized in that: include: A welding unit for welding the barrier material and a detection unit for detecting the air tightness of the barrier material after welding, wherein the welding unit and the detection unit are detachably connected. The welding unit includes a HDPE hot melt welding machine body, a heating unit and a telescopic fixing unit. The heating unit includes a supporting platform, a heating plate, a fixing platform, a fixing slot and a fixing strip. The supporting platform and the telescopic fixing unit are arranged on the base of the HDPE hot melt welding machine body. The fixing platform and the fixing strip are respectively arranged on both sides of the supporting platform. The heating plate is movably arranged on the supporting platform between the fixing platform and the fixing strip for heating. The fixing slot is arranged on the inner wall of the fixing platform. One end of the heating plate is detachably connected to the fixing slot. The telescopic fixing unit comprises a base telescopic rod and a slidable sleeve, the base telescopic rod comprises a fixed tube, a movable tube, and a locking device, the movable tube is nested and connected with the fixed tube, and the fixed tube is provided with a locking device for loosening or fixing the movable tube. The head end of the movable tube is movably arranged in the fixed tube, one end of the slidable sleeve for fixing the position of the heating plate is detachably connected to the end of the movable tube, and the other end of the slidable sleeve is detachably connected to the fixed clip strip to adjust the position of the slidable sleeve. The detection unit includes an automatic pressurizing device and an integrated inflation unit, the integrated inflation unit includes an inflation pipe and an inflation probe, one end of the inflation pipe is connected to the automatic pressurizing device, and the other end is connected to the inflation probe; The main body of the HDPE hot melt welding machine adopts electric heating, and the heating plate is made of heat-conducting material.

2. The on-site processing and testing equipment for barrier materials according to claim 1, characterized in that: The main body of the HDPE hot melt welding machine is a drawer type structure.

3. The on-site processing and testing equipment for barrier materials according to claim 1, characterized in that: The diameter of the movable tube is smaller than the diameter of the fixed tube.

4. The on-site processing and testing equipment for barrier materials according to claim 1, characterized in that: The telescopic fixing unit is arranged on the outer side of the fixing clip.

5. The on-site processing and testing equipment for barrier materials according to claim 1, characterized in that: A locking device is arranged on the wall of the fixed pipe close to the opening of the fixed pipe.

6. The on-site processing and testing equipment for barrier materials according to claim 1, characterized in that: One end of the slidable sleeve is connected to the movable tube through a buckle, and a buckle connected to the fixed clip strip is arranged at the bottom of the other end of the slidable sleeve.

7. The on-site processing and testing equipment for barrier materials according to claim 1, characterized in that: The inflation probe and the inflation pipe are an integrated structure.

8. The on-site processing and testing equipment for barrier materials according to claim 1, characterized in that: The inflation probe is connected to the inflation pipe by means of threads / bolts.

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