A transparent device for holding river and lake bottom mud during indoor environmental dredging tests

Abstract

The present invention relates to a transparent device for containing river and lake bottom mud during an indoor environmental dredging test, comprising: a bottom support system, located at the bottom of the entire device; an external protection frame, located above the bottom support system, and connected to the bottom support system by anchor bolts; a transparent water tank, located inside the external protection frame, a water tank overflow port is provided on one side of the top of the transparent water tank, and a water tank outlet port is provided on one side of the bottom, and the positions of the water tank overflow port and the water tank outlet port are arranged relative to the water inlet device; the water inlet device extends into the transparent water tank and is located at a corner of the transparent water tank, the elevation of the water inlet device is consistent with the elevation of the water tank overflow port, and is connected to the external protection frame; the water outlet device is located below the transparent water tank and is connected to the water tank outlet port. During the test of this device, the flow process and state of river and lake bottom mud can be truly observed; the inlet and outlet water have little disturbance on the river and lake bottom mud, meet the hydraulic conveying requirements during the dredging process, and can simulate the real existence state of river and lake bottom mud.

Description

Technical Field

[0001] The invention belongs to the technical field of indoor environmental dredging tests, and in particular relates to a transparent device for containing river and lake bottom mud during indoor environmental dredging tests. Background Art

[0002] Compared with traditional dredging, environmental dredging in rivers and lakes requires high construction precision, small silt disturbance, and weak impact on the growth of aquatic organisms. Dispersed sediment is the main source of pollution in environmental dredging, and pollution prevention and control in environmental dredging mainly focuses on controlling the mud that is dispersed but not transported.

[0003] When using transparent, stable, and leak-free devices to hold river and lake sediments, it is possible to observe the degree of excavation, transportation, and disturbance of the dredged sediment by environmental protection machinery during the dredging process, thereby developing excavation machinery and transportation systems that meet the requirements of environmental protection dredging.

[0004] In addition, under existing technical conditions, a transparent water tank that can meet the large volume capacity and ensure that there is no mud leakage needs to be spliced. In order to reduce the impact of the adhesive strips on the test, it is necessary to control the size and arrangement of the longitudinal and transverse beams of the external frame to ensure the flatness of the internal bottom plate of the transparent water tank. Summary of the invention

[0005] In order to solve the problems existing in the prior art, the present invention proposes a transparent device for holding river and lake bottom mud during indoor environmental dredging tests. The device can meet the needs of indoor environmental dredging tests, and can intuitively display the stirring conditions and sedimentation characteristics of the mud; it can observe the excavation, transportation and diffusion of river and lake bottom mud during dredging at 360° without blind spots; the water inlet device has the functions of energy dissipation and water dispersion, and can reduce the disturbance of the settled mud during the water inlet process; the overflow port can flow out excess water to ensure the stability of the dredged water surface; the outlet device can ensure rapid and timely discharge of mud to achieve the purpose of recycling the mud and the device. The device has the advantages of simple structure, transparent and intuitive, low disturbance, strong practicality, self-drainage of residual water, rapid drainage of wastewater, adjustable model size, and convenient use.

[0006] The present invention is implemented as follows: a transparent device for containing river and lake bottom mud during indoor environmental dredging tests, comprising:

[0007] A bottom support system, wherein the bottom support system is located at the bottom of the entire device;

[0008] An external protection frame, the external protection frame is located above the bottom support system and is connected to the bottom support system via anchor bolts;

[0009] A transparent water tank, the transparent water tank is located inside the external protection frame and is in clearance with the external protection frame; a water tank overflow port is provided on one side of the top of the transparent water tank, and a water tank outlet is provided on one side of the bottom of the transparent water tank, and the positions of the water tank overflow port and the water tank outlet are arranged opposite to the water inlet device;

[0010] A water inlet device, the water inlet device extends into the transparent water tank and is located at a corner of the transparent water tank, the elevation of the water inlet device is consistent with the elevation of the overflow port of the water tank, and is connected to the external protection frame;

[0011] A water outlet device is located below the transparent water tank and is connected to a water outlet of the water tank.

[0012] In the above technical solution, preferably, the bottom support system includes a support leg seat located at the lower part, a support leg located in the middle part, and a support crossbeam and a support longitudinal beam located at the upper part; the bottom of the support leg is welded above the support leg seat, and the support leg seat is in a plate shape and is located at the bottom of the bottom support system; the support crossbeam and the support longitudinal beam are welded and fixed, and welded to the top of the support leg; support anchor bolt holes are provided on the support longitudinal beams at both ends of the support crossbeam.

[0013] In the above technical scheme, preferably, the external protection frame includes a frame bottom crossbeam and a frame bottom longitudinal beam located at the lower part, a frame leg located in the middle part, and a frame top crossbeam, a frame top longitudinal beam and a frame top overflow port crossbeam located at the upper part; the frame bottom crossbeam and the frame bottom longitudinal beam are welded and fixed; the bottom of the frame leg is welded above the frame bottom longitudinal beam; the frame top longitudinal beam and the frame top crossbeam are welded above the frame leg; the frame top overflow port crossbeam is located on one side of the upper part of the external protection frame, arranged opposite to the water inlet device, and the elevation of the frame top overflow port crossbeam is consistent with the elevation of the water tank overflow port, so that a recess corresponding to the water tank overflow port of the transparent water tank is formed on one side of the upper part of the external protection frame.

[0014] In the above technical solution, it is further preferred that a frame anchor bolt hole is opened on the bottom longitudinal beam of the frame at a position corresponding to the support anchor bolt hole of the bottom support system, and the external protection frame and the bottom support system are anchored by anchor bolts passing through the frame anchor bolt hole and the support anchor bolt hole.

[0015] In the above technical solution, preferably, the transparent water tank includes a water tank side plate and a water tank bottom plate, and the water tank side plates and the water tank bottom plate, and the water tank side plates and the water tank side plates are bonded and fixed by side edge bonding strips.

[0016] In the above technical solution, it is further preferred that the water tank bottom plates are spliced ​​and are bonded and fixed at the connecting seams of the water tank bottom plates by bottom plate bonding strips located outside the transparent water tank; when the transparent water tank is placed in an external protective frame, the bottom plate bonding strips can be stuck in the lower part of the external protective frame.

[0017] In the above technical scheme, it is further preferred that the water tank bottom plate is formed by splicing multiple pieces, and the bottom plate bonding strips are composed of longitudinal and / or transverse bottom plate bonding strips; the frame bottom cross beam 1 and the frame bottom longitudinal beam 1 at the lower part of the external protection frame are located at the same elevation, the frame bottom cross beam 2 and the frame bottom longitudinal beam 2 are located at the same elevation, and the top surface elevation of the frame bottom cross beam 1 is at least higher than the top surface elevation of the frame bottom cross beam 2 by the thickness of a bottom plate bonding strip; the frame bottom longitudinal beam 1 located at both ends of the frame bottom cross beam 2 is provided with a frame bottom longitudinal beam groove, and the frame bottom longitudinal beam 1 located at both ends of the frame bottom longitudinal beam 2 is provided with a frame bottom beam groove, so that each bottom plate bonding strip can be stuck in the frame bottom cross beam groove and the frame bottom longitudinal beam groove.

[0018] In the above technical solution, it is further preferred that the water tank side panels and the water tank bottom panel are made of a transparent acrylic material with a thickness of more than 18 mm; the material of the side edge adhesive strips and the bottom panel adhesive strips are consistent with the material of the water tank side panels and the water tank bottom panel, and have the same thickness.

[0019] In the above technical solution, preferably, the water inlet device includes a water inlet plate, and the water inlet plate is clamped on the external protective frame through a water inlet card holder.

[0020] In the above technical solution, preferably, the water outlet device includes a water outlet pipe, a water outlet ball valve and a water outlet sealing plate from bottom to top, the water outlet ball valve is installed on the water outlet pipe, the top of the water outlet pipe is connected to the water outlet sealing plate, the top of the water outlet sealing plate is connected to the water outlet of the water tank, and a water-stop rubber pad is arranged between the two, and the water-stop rubber pad is used to prevent mud from dripping from the transparent water tank.

[0021] The advantages and positive effects of the present invention are:

[0022] 1) The transparent device for holding river and lake bottom mud of the present invention has an adjustable size of transparent water tank, which can meet the requirements of indoor small and medium-sized environmental protection dredging; the device is intuitive and transparent, and the flow process and state of river and lake bottom mud can be truly observed during the test of environmental protection dredging machinery; and the disturbance of river and lake bottom mud by water inlet and outlet is small, which meets the requirements of hydraulic transportation during dredging and can simulate the real existence state of river and lake bottom mud.

[0023] 2) The transparent water tank of the device is located inside the external protection frame, and the gap between the two is matched. When filled with water, the transparent water tank can maintain stability through its own deformation and pressure. The device has a simple structure, is easy to assemble, easy to use, does not leak during the test, is stable and reliable, and has good test results, meeting the requirements of indoor environmental dredging tests. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of a transparent device for containing river and lake bottom mud provided by an embodiment of the present invention;

[0025] Figure 2 It is a schematic diagram of the disassembled structure of a transparent device for containing river and lake bottom mud provided by an embodiment of the present invention;

[0026] Figure 3 is a schematic structural diagram of a bottom support system provided by an embodiment of the present invention;

[0027] Figure 4 is a schematic structural diagram of an external protection frame provided by an embodiment of the present invention;

[0028] Figure 5 is a schematic diagram of the structure inside the transparent water tank provided by an embodiment of the present invention;

[0029] Figure 6 is a schematic diagram of the structure of the exterior of a transparent water tank provided by an embodiment of the present invention;

[0030] Figure 7 is a schematic structural diagram of a water inlet device provided in an embodiment of the present invention;

[0031] Figure 8 It is a structural schematic diagram of the water outlet device provided in this embodiment of the new invention.

[0032] In the figure:

[0033] 10. Bottom support system; 101. Support leg seat; 102. Support leg one; 103. Support beam one; 104. Support longitudinal beam; 105. Support anchor bolt hole; 106. Support leg two; 107. Support beam two;

[0034] 20. External protection frame; 201. Frame leg 1; 202. Frame top crossbeam; 203. Frame top longitudinal beam; 204. Frame bottom longitudinal beam 1; 205. Frame anchor bolt hole; 206. Frame bottom crossbeam 1; 207. Frame leg 2; 208. Frame bottom longitudinal beam groove; 209. Frame bottom angle steel support plate; 210. Frame bottom crossbeam 2; 211. Frame bottom longitudinal beam 2; 212. Frame top turning crossbeam; 213. Frame top overflow crossbeam; 214. Frame bottom crossbeam groove; 215. Notch;

[0035] 30. Transparent water tank; 301. Water tank side panel; 302. Side edge adhesive strip; 303. Water tank bottom plate; 304. Water tank bottom plate connecting seam; 305. Water tank overflow port; 306. Water tank outlet; 307. Bottom plate adhesive strip;

[0036] 40. Water inlet device; 401. Water inlet tray; 402. Water inlet plate;

[0037] 50. Water outlet device; 501. Water outlet pipe; 502. Water outlet ball valve; 503. Water outlet plugging plate; 504. Water-stop rubber pad. DETAILED DESCRIPTION

[0038] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than 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.

[0039] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, and are 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "one", "two", and "three" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] See also Figures 1 to 8 This embodiment provides a transparent device for holding river and lake bottom mud during indoor environmental dredging tests, including: a bottom support system 10, an external protection frame 20, a transparent water tank 30, a water inlet device 40 and a water outlet device 50.

[0042] The bottom support system 10 is located at the bottom of the entire device to ensure the stability of the overall structure of the entire device.

[0043] The bottom support system 10 includes a support leg seat 101 at the bottom, a support leg at the middle, and a support crossbeam and a support longitudinal beam 104 at the top; the bottom of the support leg is welded to the top of the support leg seat 101, and the support leg seat 101 is a beveled 1 / 2 square plate, which is located at the bottom of the entire device. The larger area is used to reduce the weight of the upper structure transmitted to the ground; the support crossbeam and the support longitudinal beam 104 are welded and fixed, and welded to the top of the support leg; support anchor bolt holes 105 are provided on the support longitudinal beams 104 at both ends of the support crossbeam.

[0044] The supporting legs are divided into supporting legs 102 located on the left and right sides of the bottom supporting system 10 and supporting legs 106 located in the middle of the bottom supporting system 10, the cross-sectional area of ​​supporting legs 106 is twice the cross-sectional area of ​​supporting legs 102, the top elevations of supporting legs 102 and supporting legs 106 are consistent, and their heights can be adjusted according to indoor test requirements; the supporting beams are divided into supporting beams 103 located on the left and right sides of the bottom supporting system 10 and supporting beams 107 located in the middle of the bottom supporting system 10, the cross-sectional area of ​​supporting beams 107 is twice the cross-sectional area of ​​supporting beams 103. In this embodiment, in the bottom support system 10, the support legs and the support beams are arranged correspondingly, and a total of 8 support legs 102 are arranged, and a total of 2 support legs 106 are arranged; a total of 4 support beams 103 are arranged, and a single support beam 2 107 is arranged; one support anchor bolt hole 105 is distributed at both ends of each support beam 1 103, and two support anchor bolt holes 105 are distributed at both ends of the support beam 2 107.

[0045] The external protection frame 20 is located above the bottom support system 10 and is connected to the bottom support system 10 by anchor bolts, and has the characteristics of enhancing the rigidity and integrity of the internal transparent water tank 30 .

[0046] The external protection frame 20 includes a frame bottom cross beam and a frame bottom longitudinal beam at the bottom, a frame leg at the middle, and a frame top cross beam 202, a frame top longitudinal beam 203 and a frame top overflow port cross beam 213 at the top; the frame bottom cross beam and the frame bottom longitudinal beam are welded and fixed; the bottom of the frame leg is welded above the frame bottom longitudinal beam; the frame top longitudinal beam 203 and the frame top cross beam 202 are welded above the frame leg, and the two have the same elevation; the frame top overflow port cross beam 213 is located at the upper part of the external protection frame 20 On one side, it is arranged opposite to the water inlet device 40, and the elevation of the frame top overflow port crossbeam 213 is consistent with the elevation of the water tank overflow port 305, so that a recess 215 corresponding to the water tank overflow port 305 of the transparent water tank 30 is formed on one side of the upper part of the external protection frame 20. In this embodiment, the frame top overflow port crossbeam 213 is about 5 cm lower than the highest elevation of the frame top longitudinal beam 203; the two ends of the frame top overflow port crossbeam 213 are respectively connected to the frame top longitudinal beam 203 through the frame top turning crossbeam 212, and the cross-section of the frame top turning crossbeam 212 is a right angle.

[0047] A frame anchor bolt hole 205 is opened on the bottom longitudinal beam of the frame at a position corresponding to the support anchor bolt hole 105. The external protection frame 20 and the bottom support system 10 are anchored by anchor bolts passing through the frame anchor bolt hole 205 and the support anchor bolt hole 105. The nut and screw diameter of the anchor bolt can be selected according to the size of the overall device to ensure the connection reliability between the bottom support system 10 and the upper external protection frame 20.

[0048] In addition, a frame bottom angle steel support plate 209 is provided at the bottom position of the frame bottom longitudinal beam corresponding to the connection position of the frame legs.

[0049] The frame bottom cross beam is divided into a frame bottom cross beam 1 206 located on the left and right sides of the external protection frame 20 and a frame bottom cross beam 2 210 located in the middle of the external protection frame 20. The cross-sectional area of ​​the frame bottom cross beam 210 is twice the cross-sectional area of ​​the frame bottom cross beam 1 206. The frame bottom longitudinal beam is divided into a frame bottom longitudinal beam 1 204 located on the front and rear sides of the external protection frame 20 and a frame bottom longitudinal beam 2 211 located in the middle of the external protection frame 20. The frame bottom longitudinal beam 1 204, the frame bottom longitudinal beam 211, the frame bottom cross beam 1 206 and the frame bottom cross beam 2 210 are welded together to form the lower part of the external protection frame 20.

[0050] The frame legs are divided into frame legs 1 201 located on the left and right sides of the external protective frame 20 and frame legs 2 207 located in the middle of the external protective frame 20. The cross-sectional area of ​​the frame legs 207 is twice the cross-sectional area of ​​the frame legs 1 201. The top elevations of the frame legs 1 201 and 207 are consistent.

[0051] In this embodiment, the frame leg one 201, the frame leg two 207, the frame bottom cross beam one 206, the frame bottom cross beam two 210 and the frame bottom longitudinal beam one 204 correspond to the support leg one 102, the support leg two 106, the support cross beam one 103, the support cross beam two 107 and the support longitudinal beam 104 in the vertical projection and have similar sizes.

[0052] A transparent water tank 30 is located inside the external protective frame 20, and is mainly used for settling mud and holding river and lake bottom mud that needs to be dredged, and is loosely matched with the external protective frame 20; when there is no water, there is a gap between the transparent water tank 30 and the external protective frame 20, and after filling with water, the side wall of the transparent water tank 30 is close to the inner wall of the external protective frame 20; a water tank overflow port 305 is provided on one side of the top of the transparent water tank 30, and a water tank outlet port 306 is provided on one side of the bottom of the transparent water tank 30, and the size of the water tank outlet port 306 is changed according to the volume of the transparent water tank 30, and the positions of the water tank overflow port 305 and the water tank outlet port 306 are arranged relative to the water inlet device 40.

[0053] The transparent water tank 30 includes a water tank side plate 301 and a water tank bottom plate 302. The water tank side plates 301 and the water tank bottom plate 302, and the water tank side plates 301 and the water tank side plates 301 are bonded and fixed by side edge bonding strips 302 located inside the transparent water tank 30. The water tank bottom plates 302 are spliced ​​together, and are bonded and fixed by bottom plate bonding strips 307 located outside the transparent water tank 30 at the water tank bottom plate connection seam 304. Specifically, the water tank bottom plate 302 is spliced ​​together by 4 pieces, and the bottom plate bonding strips 307 are composed of two bottom plate bonding strips 307 in a vertical and horizontal direction, and the bottom plate bonding strips 307 can completely cover the water tank bottom plate connection seam 304.

[0054] The frame bottom cross beam 1 206 and the frame bottom longitudinal beam 1 204 are located at the same elevation, the frame bottom cross beam 2 210 and the frame bottom longitudinal beam 2 211 are located at the same elevation, the top surface elevation of the frame bottom cross beam 1 206 is at least higher than the top surface elevation of the frame bottom cross beam 210 by the thickness of a bottom plate adhesive strip 307 (approximately 20 mm); the frame bottom longitudinal beam 1 204 located at both ends of the frame bottom cross beam 210 is provided with a frame bottom longitudinal beam groove 208, and the frame bottom cross beam groove 214 is provided on the frame bottom cross beam 1 206 located at both ends of the frame bottom longitudinal beam 211, so that the bottom plate adhesive strip 307 can be stuck in the frame bottom cross beam groove 214 and the frame bottom longitudinal beam groove 208. Specifically, it is best if the bottom plate adhesive strip 307 can be completely stuck in the bottom cross beam groove 214 of the frame and the bottom longitudinal beam groove 208 of the frame. At this time, the water tank bottom plate 302 can fit exactly with the bottom cross beam 206 of the frame and the bottom longitudinal beam 204 of the frame, thereby playing a better supporting and protective role.

[0055] The water tank side panels 301 and the water tank bottom panel 302 are made of transparent acrylic material with a thickness of more than 18 mm, and can also be made of other materials. The material of the side edge adhesive strip 302 and the bottom panel adhesive strip 307 is consistent with that of the water tank side panels 301 and the water tank bottom panel 302, and the thickness is the same.

[0056] The water inlet device 40 extends into the transparent water tank 30 and is located at one of the four corners of the transparent water tank 30. The elevation of the water inlet device 40 is consistent with the elevation of the water tank overflow port 305. In this embodiment, it is 5 cm lower than the highest elevation of the transparent water tank 30. The water outlet device 50 is located below the transparent water tank 30 and is connected to the water tank outlet 306, and can quickly discharge the mud in the transparent water tank 30. By adding the water inlet device 40 with a water dispersion function, the disturbance of the inlet water flow to the settled dredged sludge can be reduced, and the excess or original mud-water mixture can be discharged by overflowing from the top and emptying from the bottom.

[0057] The water inlet device 40 includes a water inlet plate 402, and the water inlet plate 402 is clamped on the external protection frame 20 through a water inlet bracket 401; specifically, one end of the water inlet bracket 401 supports the water inlet plate 402, and the other end is clamped on the frame top cross beam 202 and the frame top longitudinal beam 203 of the external protection frame 20.

[0058] The water outlet device 50 includes a water outlet pipe 501, a water outlet ball valve 502 and a water outlet sealing plate 503 from bottom to top. The water outlet ball valve 502 is installed on the water outlet pipe 501. The top of the water outlet pipe 501 is connected to the water outlet sealing plate 503. The inner hole of the water outlet sealing plate 503 is consistent with the size of the water tank water outlet 306. The top of the water outlet sealing plate 503 is connected to the water tank water outlet 306, and a water-stopping rubber pad 504 is arranged between the two. The water-stopping rubber pad 504 is used to prevent mud from dripping from the transparent water tank 30.

[0059] In summary, as an indoor environmental dredging sludge holding device and test site, compared with the indoor remolded soil test device, the present invention can observe the deformation characteristics of silty soil or mud during the environmental dredging equipment test, ensuring that the mud does not seep out and the water does not flow out; and under the premise of ensuring that the mud is not disturbed, water can be filled and pumped into the device, thereby meeting the requirements of hydraulic transportation during the dredging process. The device is simple, reliable, and reusable, meeting the requirements of indoor environmental dredging tests.

[0060] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are within the scope of the technical solution of the present invention.

Claims

1. A transparent device for holding river and lake bottom mud during indoor environmental dredging tests. It is characterized in that include: A bottom support system, wherein the bottom support system is located at the bottom of the entire device; An external protection frame, the external protection frame is located above the bottom support system and is connected to the bottom support system via anchor bolts; A transparent water tank, the transparent water tank is located inside the external protection frame and is in clearance with the external protection frame; a water tank overflow port is provided on one side of the top of the transparent water tank, and a water tank outlet is provided on one side of the bottom of the transparent water tank, and the positions of the water tank overflow port and the water tank outlet are arranged opposite to the water inlet device; A water inlet device, the water inlet device extends into the transparent water tank and is located at a corner of the transparent water tank, the elevation of the water inlet device is consistent with the elevation of the overflow port of the water tank, and is connected to the external protection frame; A water outlet device, the water outlet device is located below the transparent water tank and connected to the water outlet of the water tank; The transparent water tank comprises a water tank side plate and a water tank bottom plate, and the water tank side plates and the water tank bottom plate, and the water tank side plates and the water tank side plates are bonded and fixed by side edge bonding strips; The water tank bottom plate is formed by splicing multiple pieces, and the joints of the water tank bottom plate are bonded and fixed by the bottom plate bonding strips located outside the transparent water tank, and the bottom plate bonding strips are composed of longitudinal and transverse bottom plate bonding strips; the external protection frame includes a frame bottom cross beam and a frame bottom longitudinal beam located at the lower part, and the frame bottom cross beam is divided into a frame bottom cross beam 1 located on the left and right sides of the external protection frame and a frame bottom cross beam 2 located in the middle of the external protection frame, and the frame bottom longitudinal beam is divided into a frame bottom longitudinal beam 1 located on the front and rear sides of the external protection frame and a frame bottom longitudinal beam 2 located in the middle of the external protection frame; The frame bottom cross beam 1 and the frame bottom longitudinal beam 1 at the lower part of the external protection frame are located at the same elevation, the frame bottom cross beam 2 and the frame bottom longitudinal beam 2 are located at the same elevation, the top surface elevation of the frame bottom cross beam 1 is at least higher than the top surface elevation of the frame bottom cross beam 2 by the thickness of a bottom plate adhesive strip; the frame bottom longitudinal beam 1 located at both ends of the frame bottom cross beam 2 is provided with a frame bottom longitudinal beam groove, and the frame bottom cross beam 1 located at both ends of the frame bottom longitudinal beam 2 is provided with a frame bottom cross beam groove, when the transparent water tank is placed in the external protection frame, each bottom plate adhesive strip is completely stuck in the frame bottom cross beam groove and the frame bottom longitudinal beam groove; The material of the side edge bonding strip and the bottom plate bonding strip is consistent with the material of the water tank side plate and the water tank bottom plate, and the thickness is the same.

2. The transparent device for holding river and lake bottom mud during indoor environmental dredging test according to claim 1, It is characterized in that The bottom support system includes a support leg seat at the bottom, a support leg at the middle, and a support crossbeam and a support longitudinal beam at the top; the bottom of the support leg is welded above the support leg seat, and the support leg seat is in a plate shape and is located at the bottom of the bottom support system; the support crossbeam and the support longitudinal beam are welded and fixed, and welded to the top of the support leg; support anchor bolt holes are provided on the support longitudinal beams at both ends of the support crossbeam.

3. The transparent device for containing river and lake bottom mud during indoor environmental dredging test according to claim 1, It is characterized in that The external protection frame also includes a frame leg located in the middle, and a frame top crossbeam, a frame top longitudinal beam and a frame top overflow port crossbeam located in the upper part; the frame bottom crossbeam and the frame bottom longitudinal beam are welded and fixed; the bottom of the frame leg is welded above the frame bottom longitudinal beam; the frame top longitudinal beam and the frame top crossbeam are welded above the frame leg; the frame top overflow port crossbeam is located on one side of the upper part of the external protection frame, arranged opposite to the water inlet device, and the elevation of the frame top overflow port crossbeam is consistent with the elevation of the water tank overflow port, so that a recess corresponding to the water tank overflow port of the transparent water tank is formed on one side of the upper part of the external protection frame.

4. The transparent device for containing river and lake bottom mud during indoor environmental dredging test according to claim 3, It is characterized in that A frame anchor bolt hole is provided on the bottom longitudinal beam of the frame at a position corresponding to the support anchor bolt hole of the bottom support system, and the external protection frame and the bottom support system are anchored by anchor bolts passing through the frame anchor bolt hole and the support anchor bolt hole.

5. The transparent device for containing river and lake bottom mud during indoor environmental dredging test according to claim 1, It is characterized in that The water tank side panels and the water tank bottom panel are made of a transparent acrylic material with a thickness of more than 18 mm.

6. The transparent device for containing river and lake bottom mud during indoor environmental dredging test according to claim 1, It is characterized in that The water inlet device comprises a water inlet plate, and the water inlet plate is clamped on the external protection frame through a water inlet clamp.

7. The transparent device for containing river and lake bottom mud during indoor environmental dredging test according to claim 1, It is characterized in that The water outlet device includes a water outlet pipe, a water outlet ball valve and a water outlet sealing plate from bottom to top. The water outlet ball valve is installed on the water outlet pipe. The top of the water outlet pipe is connected to the water outlet sealing plate. The top of the water outlet sealing plate is connected to the water outlet of the water tank, and a water-stopping rubber pad is arranged between the two. The water-stopping rubber pad is used to prevent mud from dripping from the transparent water tank.

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