A three-stage plug-in bite seal connection device with built-in water stop strip

Abstract

A three-stage plug-in bite sealing connection structure with a built-in waterstop strip includes a two-cavity side panel, a three-cavity side panel and an expansion waterstop strip. The two-cavity side panel and the three-cavity side panel 2 are connected by plug-in bite sealing, and the expansion waterstop strip expands when exposed to water to achieve sealing between the two. The two-cavity side plate includes a large cavity and a small cavity, with inverted T-shaped convex bodies on both sides of the large cavity, and inverted T-shaped convex bodies and inverted L-shaped convex bodies on both sides of the small cavity; the three-cavity side plate includes a left cavity, a middle cavity and a right cavity, with inverted L-shaped convex bodies and J-shaped convex bodies on the left and right sides of the left cavity, respectively, J-shaped convex bodies and inverted J-shaped convex bodies on both sides of the middle cavity, and inverted J-shaped convex bodies and T-shaped convex bodies on the left and right sides of the right cavity; the expansion waterstop strip is inserted and fixed in the middle cavity; it has a simple structure, and the insertion is smooth, light and unobstructed. During the insertion process, the expansion waterstop strip will not be cut off, or shrink and gather, and will not be damaged, and the amount of expansion waterstop strip used is small, and the sealing performance is stable and reliable.

Description

Technical Field

[0001] The present invention relates to the fields of environmental treatment and water conservancy construction of polluted sites such as petrochemical industry, mining and smelting, and solid waste disposal, and in particular to a sealing connection device between two adjacent HDPE geomembranes in a vertical flexible barrier system. Background Art

[0002] In long-term solid waste storage, simple garbage dumps, and non-standard landfills, a commonly used method to prevent underground contaminated water leakage is a vertical barrier system. A vertical barrier system is the fastest and safest method for blocking harmful underground liquid flows. CN 102444145 B discloses a porous sealing device for connecting a vertical flexible barrier system, comprising an expansion waterstop pad and connecting locking members disposed on both sides of an HDPE geomembrane and maintaining a seal with the HDPE geomembrane. When the connecting locking members on each HDPE geomembrane and the connecting locking members on another HDPE geomembrane are fastened to form a sealing device, a cavity for installing the expansion waterstop pad is formed between the two fastened connecting locking members, and the expansion waterstop pad is filled in the cavity.

[0003] In the embodiment of the present invention, a scheme of forming a seven-level seal by seven expansion water-stop pads is listed, claiming that it can ensure a long-lasting seal at the connection of the vertical flexible barrier system. Although the connection sealing structure provided by this scheme makes sense in theory, in actual use, the product of this structure cannot be used normally, because when the connection locks fixed on the two HDPE geomembranes cooperate with each other to form a sealing device, an expansion water-stop pad cavity for installing the expansion water-stop pad is formed between the mutually cooperating T-shaped structures or between the mutually cooperating T-shaped structures and the inverted L-shaped structures. When two adjacent HDPE geomembranes are connected by the connection locks, although an expansion water-stop pad cavity for installing the expansion water-stop pad is formed at the connection of the connection locks of the two, the expansion water-stop pad will expand rapidly when it comes into contact with water, with an expansion multiple of more than 5 times, and the lower sections of the connection of the connection locks of the two are in a water area. At the same time, the bottom of the groove is full of mud and is easy to precipitate, making it difficult to insert the expansion water-stop pad. Therefore, the strip-shaped expansion water-stop pad is soft and has a length of more than 30 meters. It is impossible to insert such a long soft expansion waterstop pad into the expansion waterstop pad cavity, because the soft expansion waterstop pad will inevitably contact the cavity wall when inserted, and there is a sticky effect between the two. Pushing the soft expansion waterstop pad in only one direction from top to bottom will cause the soft expansion waterstop pad to gather in the height direction, resulting in the soft expansion waterstop pad unable to be evenly distributed in the preset waterproof cavity, causing the space that should have been sealed by the soft expansion waterstop pad absorbing water to be unfilled or hollowly filled, and the sealing performance cannot be guaranteed.

[0004] The construction workers first fixed the soft expansion water-stop pad on the movable connecting lock, and then inserted it together with the movable connecting lock. The effect was also very poor. Although the fixed connecting lock has been fixed, the verticality of the exposed end is not guaranteed. It is very difficult to smoothly insert the connecting lock with the soft expansion water-stop pad into the fixed connecting lock. During the insertion process, since the verticality of the movable connecting lock to be inserted cannot be guaranteed during the downward movement, the movable connecting lock has a certain amount of shaking. In this way, the pre-adhered expansion water-stop pad is easily touched by the end portion of the fixed connecting lock. The end of the fixed connecting lock cuts off the expansion water-stop pad, and the lower section of the cut expansion water-stop pad falls freely and blocks the lower part of the fixed connecting lock. This will not only prevent the expansion water-stop pad from moving downward and inserting, but also make the movable connecting lock unable to be inserted into place. The upper section of the cut expansion waterstop pad will be blocked and gathered by the upper port of the fixed connecting lock, so that the expansion waterstop pad cannot be inserted smoothly. The connecting locks on the two adjacent HDPE geomembranes cooperate with each other to form a so-called sealing device that is not sealed.

[0005] In summary, the porous sealing device disclosed in CN 102444145 B for connecting a vertical flexible barrier system cannot be properly inserted to the bottom when inserting the expansion water-stop pad, and the sealing cavity cannot be evenly filled, inevitably resulting in false insertion and false filling. The construction workers will directly cut off the excess parts that cannot be inserted into place, forming a false sealing structure in the bottom water storage area, which cannot achieve the sealing and blocking of underground contaminated water and the reliable sealing purpose of the invention. It must be improved. Summary of the Invention

[0006] The purpose of the present invention is to provide a three-stage plug-in bite sealing connection structure with a built-in water stop strip, so as to overcome the shortcomings of the prior art.

[0007] In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is as follows:

[0008] A three-stage plug-in bite seal connection structure with a built-in water stop strip, characterized in that it includes a two-cavity side plate, a three-cavity side plate, and an expansion water stop strip, wherein the two-cavity side plate includes a right side plate body and two inverted T-shaped protrusions, a large cavity, a small cavity, and an inverted L-shaped protrusion, the large cavity and the small cavity are arranged in sequence, with inverted T-shaped protrusions on both sides of the large cavity, an inverted T-shaped protrusion on the left side of the small cavity, and an inverted L-shaped protrusion on the right side of the small cavity;

[0009] The three-chamber side plate includes a right side plate body, a left chamber, a middle chamber and a right chamber. The left side of the left chamber is an inverted L-shaped convex body, the right side of the left chamber is a J-shaped convex body, and the two sides of the middle chamber are respectively provided with a J-shaped convex body and an inverted J-shaped convex body. The left side of the right chamber is provided with an inverted J-shaped convex body, and the right side of the right chamber is provided with a T-shaped convex body.

[0010] The expansion water stop strip is inserted and fixed in the middle cavity;

[0011] The two-cavity side panel and the three-cavity side panel are connected by plug-in bite sealing, and the expansion water stop strip between the two is used to achieve sealing when it expands when exposed to water.

[0012] Furthermore, the plug-in and bite connection structure between the two-cavity side panel and the three-cavity side panel is as follows: the T-shaped protrusion on the three-cavity side panel is inserted into the small cavity on the two-cavity side panel, and the J-shaped protrusion and the inverted J-shaped protrusion on the three-cavity side panel are inserted into the large cavity on the two-cavity side panel.

[0013] The installation method of the present invention is as follows: first, place the two-cavity side panel into a pre-opened groove, and expose the large cavity and the non-cavity in the two-cavity side panel, fill the remaining part with soil or fill it with concrete, compact it and fix it vertically, insert the expansion water stop strip into the middle cavity of the three-cavity side panel and fix it, then insert the T-shaped protrusion on the three-cavity side panel with the expansion water stop strip into the small cavity on the two-cavity side panel, and insert the J-shaped protrusion and the inverted J-shaped protrusion on the three-cavity side panel into the large cavity on the two-cavity side panel. As the expansion waterstop continuously absorbs moisture in the groove and expands, its volume after expansion increases by 5 to 30 times. In this way, after the expansion waterstop expands, it will squeeze, seal and fill the two-cavity side panels and the three-cavity side panels, so that the two are reliably sealed at the connection point of the locking piece. It has a simple structure and is easy and convenient to install. During the installation process, the expansion waterstop will not be cut off, nor will it be gathered, nor will it be damaged. The amount of expansion waterstop used is small, the sealing performance is stable and reliable, and a firm connection is achieved through a three-level plug-in bite structure. It is an ideal solution to replace existing products. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the assembly structure of the expansion waterstop strip of the present invention before expansion.

[0015] Figure 2 Schematic diagram of the structure of the two-cavity side plate;

[0016] Figure 3 It is a structural diagram of the three-cavity side panel;

[0017] Figure 4 This is a schematic diagram of the assembly structure of the expansion waterstop strip of the present invention after expansion.

[0018] In the figure: 1-two-cavity side panel; 2-three-cavity side panel; 3-expansion water stop strip; 11-left side panel body;

[0019] 12 - inverted T-shaped convex body; 13 - large cavity; 14 - small cavity 14; 15 - inverted L-shaped convex body; 21 - right side plate body;

[0020] 22-left cavity; 23-middle cavity; 24-right cavity; 25-inverted L-shaped convex body; 26-J-shaped convex body;

[0021] 27-inverted J-shaped convex body; 28-T-shaped convex body. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] Example 1: A three-stage plug-in bite seal connection structure with a built-in water stop strip, such as Figures 1-4 As shown, it includes a two-cavity side plate 1, a three-cavity side plate 2 and an expansion water stop strip 3. The two-cavity side plate 1 includes a left plate body 11 and two inverted T-shaped protrusions 12, a large cavity 13, a small cavity 14 and an inverted L-shaped protrusion 15. The large cavity 13 and the small cavity 14 are arranged in sequence. The inverted T-shaped protrusions 12 are respectively provided on both sides of the large cavity 13, the inverted T-shaped protrusion 12 is provided on the left side of the small cavity 14, and the inverted L-shaped protrusion 15 is provided on the right side of the small cavity 14;

[0024] The three-chamber side plate 2 includes a right side plate body 21, a left cavity 22, a middle cavity 23, and a right cavity 24. The left side of the left cavity 22 is an inverted L-shaped convex body 25, the right side of the left cavity 22 is a J-shaped convex body 26, and the two sides of the middle cavity 23 are respectively provided with a J-shaped convex body 26 and an inverted J-shaped convex body 27. The left side of the right cavity 24 is provided with an inverted J-shaped convex body 27, and the right side of the right cavity 24 is provided with a T-shaped convex body 28; the expansion water stop strip 3 is inserted and fixed in the middle cavity 22. In the intermediate cavity 23; the two-cavity side panel 1 and the three-cavity side panel 2 are connected by plug-in bite sealing, and the two are sealed by the expansion water stop strip 3 that expands when it comes into contact with water. In this example, the plug-in bite connection structure between the two-cavity side panel 1 and the three-cavity side panel 2 is: the T-shaped protrusion 28 on the three-cavity side panel 2 is inserted into the small cavity 14 on the two-cavity side panel 1, and the J-shaped protrusion 26 and the inverted J-shaped protrusion 27 on the three-cavity side panel 2 are inserted into the large cavity 13 on the two-cavity side panel 1.

[0025] There are many embodiments of the present invention, which are not listed one by one here. Those skilled in the art should understand from the above embodiments that the present invention is not limited to the above embodiments. Any modifications and equivalent substitutions made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A three-stage plug-in bite seal connection structure with a built-in water stop strip, characterized by: The invention comprises a two-cavity side plate (1), a three-cavity side plate (2) and an expansion water stop strip (3); the two-cavity side plate (1) comprises a left plate body (11), two inverted T-shaped convex bodies (12), a large cavity (13), a small cavity (14) and an inverted L-shaped convex body (15); the large cavity (13) and the small cavity (14) are arranged in sequence; the inverted T-shaped convex bodies (12) are respectively provided on both sides of the large cavity (13); the inverted T-shaped convex body (12) is provided on the left side of the small cavity (14); and the inverted L-shaped convex body (15) is provided on the right side of the small cavity (14); The three-chamber side plate (2) comprises a right side plate body (21), a left accommodating chamber (22), a middle accommodating chamber (23), and a right accommodating chamber (24); the left side of the left accommodating chamber (22) is an inverted L-shaped convex body (25); the right side of the left accommodating chamber (22) is a J-shaped convex body (26); the two sides of the middle accommodating chamber (23) are respectively provided with a J-shaped convex body (26) and an inverted J-shaped convex body (27); the left side of the right accommodating chamber (24) is provided with an inverted J-shaped convex body (27); and the right side of the right accommodating chamber (24) is provided with a T-shaped convex body (28); The expansion water stop strip (3) is inserted and fixed in the middle cavity (23); The two-cavity side panel (1) and the three-cavity side panel (2) are connected by plug-in bite sealing, and the two are sealed by the expansion water stop strip (3) that expands when it encounters water. The plug-in bite connection structure between the two-cavity side panel (1) and the three-cavity side panel (2) is as follows: the T-shaped protrusion (28) on the three-cavity side panel (2) is plugged into the small volume cavity (14) on the two-cavity side panel (1), and the J-shaped protrusion (26) and the inverted J-shaped protrusion (27) on the three-cavity side panel (2) are plugged into the large volume cavity (13) on the two-cavity side panel (1).

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