Reusable water stop screw

Abstract

The utility model relates to a reusable waterstop screw, which comprises a hollow pipe, a stud, an abutting block and an abutting nut, the hollow pipe is arranged between two templates, the hollow pipe is connected with a waterstop steel plate, one end of the stud is detachably connected in the hollow pipe, the abutting block is arranged on the templates, the abutting nut is arranged on the template, and the other end of the stud is detachably connected in the hollow pipe. One end of the stud penetrates through the abutting block, the other end of the stud penetrates through the abutting block, the abutting nut is in threaded fit with the other end of the stud, the abutting block is located between the abutting nut and the formworks, after concrete between the two formworks is solidified, the stud is taken out, and the hollow pipe is filled with the concrete. The sealing effect of the water stop screw can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water-stop screw rods, in particular to a reusable water-stop screw rod. Background Art

[0002] Waterstop screws are usually used in the pouring of basement shear walls to fix the formwork and control the thickness of concrete pouring.

[0003] The Chinese patent with the announcement number CN213418497U discloses a reusable water-stop tension screw rod, which includes a screw rod for embedding in a wall, two tensioning components are sleeved on the outer periphery of the screw rod, a water-stop sleeve body located between the two tensioning components and swellable in water is sleeved on the outer periphery of the screw rod, and the water-stop sleeve body is detachably connected to the screw rod. The reusable water-stop tension screw rod provided by the present application can pull the screw rod out of the wall rod as a whole without cutting it, so it is not easy to damage the wall rod, and the screw rod can be recycled, while the water-stop sleeve body is retained in the wall rod, and the water-stop sleeve body fills the joint cavity and other areas by expanding, thereby improving the waterproof effect.

[0004] With respect to the above-mentioned related technologies, in the prior art, the staff pre-sets a water-stop sleeve that can expand when exposed to water. After the concrete inside the formwork solidifies, the sleeve expands to achieve a waterproof effect. However, the concrete is moist before solidifying. When pouring concrete in the two formworks, the water-stop sleeve is likely to expand when encountering moist concrete. After the concrete solidifies, the expanded water-stop sleeve will hinder the withdrawal of the screw (friction between the threads on the surface of the screw and the water-stop sleeve). If the screw is forcibly pulled out, the internal structure of the water-stop sleeve will also be damaged, which will affect the overall sealing performance of the water-stop sleeve and reduce the sealing effect of the water-stop screw. Utility Model Content

[0005] In order to improve the sealing effect of the water-stop screw, the present application provides a reusable water-stop screw.

[0006] The present application provides a reusable water-stop screw adopting the following technical solution:

[0007] A reusable waterstop screw comprises a hollow tube, a stud, a locking block and a locking nut installed between two templates, wherein a waterstop steel plate is connected to the hollow tube, one end of the stud is detachably connected to the hollow tube, the locking block is arranged on the template, the other end of the stud passes through the locking block, the locking nut is threadedly engaged with the other end of the stud, the locking block is located between the locking nut and the template, and after the concrete between the two templates solidifies, the stud is taken out and the hollow tube is filled with concrete.

[0008] By adopting the above technical solution, the staff pre-installs the hollow tube between the two templates, then detachably connects one end of the stud to the hollow tube, then sets the abutment block on the screw, rotates the abutment nut, and makes the abutment nut fit the abutment block to stabilize the two templates, and finally pours concrete between the two templates, removes the stud after the concrete solidifies, and pours concrete into the hollow tube to seal the hollow tube. The staff can remove the stud after the concrete solidifies for next use, and finally fill the hollow tube with concrete to seal the hollow tube, reducing the possibility of water seepage in the hollow tube, further improving the sealing of the hollow tube, and improving the sealing effect of the water-stop screw.

[0009] Optionally, a connecting nut is connected to the waterstop steel plate at a position corresponding to the hollow tube, the connecting nut is located inside the hollow tube, and one end of the stud is threadedly engaged with the connecting nut.

[0010] By adopting the above technical solution, when installing the stud, the staff fits one end of the stud into the connecting nut through a thread, thereby realizing the detachable installation of the stud.

[0011] Optionally, the waterstop steel plate is connected to a connecting tube at a position corresponding to the hollow tube, one end of the stud is connected to a limiting block, a movable groove is opened at a position corresponding to the limiting block, a rotating arc groove is opened at one end of the movable groove close to the waterstop steel plate, the center of the rotating arc groove is located on the axis of the connecting tube, and a limiting groove matching the shape of the limiting block is opened at one end of the rotating arc groove away from the movable groove, and when the stud is installed, the limiting block is located in the limiting groove.

[0012] By adopting the above technical solution, when installing the stud, the staff inserts the stud into the connecting tube, and the limiting block moves in the movable groove until the limiting block enters the rotating arc groove. The stud is then rotated to rotate the limiting block until it is aligned with the limiting groove, and the stud is pulled to insert the limiting block into the limiting groove, thereby realizing the installation of the stud.

[0013] Optionally, one end of the stud is connected to a connecting spring, and one end of the connecting spring away from the stud is connected to a contact plate.

[0014] By adopting the above technical solution, the staff uses the resistance plate to resist the waterstop steel plate, so that the connecting spring applies force to the stud, so that the limiting block is restricted in the limiting groove, further limiting the freedom of the stud and providing convenience for the installation of the stud.

[0015] Optionally, two clamping grooves are formed on the clamping block, two steel pipes are arranged between the clamping block and the template, the clamping grooves match the shapes of the steel pipes, and the steel pipes are located between the template and the clamping grooves.

[0016] By adopting the above technical solution, the staff evenly distributes the pressure of the clamping block on the formwork through the cooperation of the clamping groove and the steel pipe, thereby ensuring the forming size of the concrete.

[0017] Optionally, the surface of the waterstop steel plate is coated with polytetrafluoroethylene.

[0018] By adopting the above technical solution, the waterstop steel plate is used for a long time inside the concrete, and there is a possibility of rust on the waterstop steel plate, which affects the structural strength of the waterstop steel plate and reduces the water-blocking performance of the waterstop steel plate. The staff applied a polytetrafluoroethylene coating on the surface of the waterstop steel plate to isolate the waterstop steel plate from contact with external substances, improve the corrosion resistance of the waterstop steel plate, and increase the service life of the waterstop steel plate.

[0019] Optionally, the hollow tube is a PVC tube.

[0020] By adopting the above technical solution, the PVC pipe has strong corrosion resistance and low cost, and the hollow pipe will not undergo chemical reaction in concrete for a long time, thereby increasing the service life of the hollow pipe.

[0021] Optionally, a limiting ring is connected to the waterstop steel plate, a fixing ring is connected to the position of the template corresponding to the hollow tube, one end of the hollow tube is connected to the limiting ring, and the other end is connected to a mounting ring, and the mounting ring is sleeved on the fixing ring.

[0022] By adopting the above technical solution, the staff uses a limiting ring to limit one end of the hollow tube, and uses the limiting ring to be sleeved on the fixing ring, thereby limiting the installation position of the hollow tube on the template, improving the installation stability of the hollow tube, and providing convenience for the installation of the stud.

[0023] Optionally, a plug plate is provided outside the hollow tube, the shape of the plug plate matches the inner hole of the hollow tube, a fixing column is connected to the plug plate, and a plurality of reinforcement rods are connected between the plug plate and the fixing column.

[0024] By adopting the above technical solution, when filling the hollow tube with concrete, there is a possibility that the concrete is not filled tightly in the hollow tube, which will affect the overall sealing of the hollow tube. The staff controls the fixed column to squeeze the concrete inside the hollow tube with the plug plate, making the concrete tighter and ensuring the sealing inside the hollow tube.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. The staff installs the hollow tube between the two templates in advance, and then removably connects one end of the stud to the hollow tube, then sets the clamping block on the screw, and turns the clamping nut to make the clamping nut fit the clamping block to stabilize the two templates, and finally pours concrete between the two templates. After the concrete solidifies, the stud is removed, and concrete is poured into the hollow tube to seal the hollow tube. The staff can remove the stud after the concrete solidifies for next use, and finally fill the hollow tube with concrete to seal the hollow tube, reducing the possibility of water seepage in the hollow tube, further improving the sealing of the hollow tube, and improving the sealing effect of the water-stop screw;

[0027] 2. When installing the stud, the staff inserts the stud into the connecting tube, and the limiting block moves in the movable groove until the limiting block enters the rotating arc groove. Then the stud is rotated to rotate the limiting block until it is aligned with the limiting groove, and the stud is pulled to insert the limiting block into the limiting groove, thereby completing the installation of the stud. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the water stop screw in Example 1 of the present application.

[0029] Figure 2 It is a schematic diagram of the assembly of the water stop screw in Example 1 of the present application.

[0030] Figure 3 It is a cross-sectional view used to illustrate the internal structure of the hollow tube in Example 1 of the present application.

[0031] Figure 4 It is a schematic diagram of the structure of the plug plate in Example 1 of the present application.

[0032] Figure 5 It is an exploded view used to illustrate the stud structure in Example 2 of the present application.

[0033] Figure 6 It is a cross-sectional view used to reflect the internal structure of the connecting tube in Example 2 of the present application.

[0034] Figure 7 It is an assembly cross-sectional view of the stud in Example 2 of the present application.

[0035] Explanation of the reference numerals: 01, template; 011, fixing ring; 1, hollow tube; 11, water-stop steel plate; 111, limiting ring; 12, mounting ring; 2, stud; 21, connecting spring; 22, contact plate; 23, limiting block; 3, tightening block; 31, steel tube; 4, tightening nut; 5, connecting nut; 6, plug plate; 61, fixing column; 62, reinforcing rod; 7, connecting tube; 71, movable groove; 72, rotating arc groove; 73, limiting groove. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-7 This application is described in further detail.

[0037] Example 1 of the present application discloses a reusable water-stop screw. Figure 1 , Figure 2 and Figure 3 The reusable water-stop screw includes a plurality of hollow tubes 1, studs 2, abutment blocks 3 and abutment nuts 4 arranged between two templates 01. In this embodiment, nine hollow tubes 1 are taken as an example, and three hollow tubes 1 form a row. The hollow tubes 1 are PVC tubes. A water-stop steel plate 11 is arranged on the hollow tube 1. The surface of the water-stop steel plate 11 is coated with a polytetrafluoroethylene coating. The polytetrafluoroethylene coating is used to extend the service life of the water-stop steel plate 11. The water-stop steel plate 11 divides the hollow tube 1 into two sections. A limiting ring 111 is fixedly connected to the position of the water-stop steel plate 11 corresponding to the hollow tube 1. A fixing ring 011 is fixedly connected to the position of the template 01 corresponding to the limiting ring 111. One end of the hollow tube 1 is fixedly connected in the limiting ring 111, and the other end is fixedly connected to a mounting ring 12. The mounting ring 12 is sleeved on the fixing ring 011.

[0038] Reference Figure 2 and Figure 3 , a connecting nut 5 is fixedly connected to the water stop steel plate 11, and the connecting nut 5 is located in the hollow tube 1. One end of the stud 2 is threadedly fitted in the connecting nut 5, and the other end extends to the outside of the hollow tube 1. Two tightening grooves are provided on the tightening block 3, and the tightening block 3 is sleeved on the other end of the stud 2. A steel pipe 31 is provided between the tightening groove and the template 01, and the three horizontal tightening blocks 3 share two steel pipes 31. The tightening nut 4 is threadedly fitted on the other end of the stud 2 and fits the tightening block 3.

[0039] Reference Figure 1 and Figure 4 A plug plate 6 is arranged outside the hollow tube 1 , and the plug plate 6 is a circular plate. A fixing column 61 is fixedly connected to the plug plate 6 , and a plurality of reinforcing rods 62 are fixedly connected between the fixing column 61 and the plug plate 6 .

[0040] When installing the water-stop screw, the staff installs the hollow tube 1 between the two templates 01 in advance, then threads one end of the stud 2 into the connecting nut 5, and then sets the abutment block 3 on the stud 2, places the steel pipe 31 between the abutment groove and the template 01, and finally rotates the abutment nut 4 to achieve the installation of the water-stop screw. Pour concrete between the two templates 01, and after the concrete solidifies, loosen the abutment nut 4, rotate the stud 2 in the opposite direction to remove the stud 2, and pour concrete into the hollow tube 1, and use the plug plate 6 to squeeze the concrete in the hollow tube 1 to compact the concrete.

[0041] The implementation principle of a reusable water-stop screw in Example 1 of the present application is as follows: the staff installs the hollow tube 1 between the two templates 01, then extends one end of the stud 2 into the hollow tube 1, and cooperates with the connecting nut 5 threadedly, then puts the tightening block 3 on the stud 2, and places the steel pipe 31 between the tightening groove and the template 01, and finally rotates the tightening nut 4 to install the water-stop screw, and then pours concrete between the two templates 01; after the concrete solidifies, loosen the tightening nut 4, rotate the stud 2 in the opposite direction to take out the stud 2, and then fill the hollow tube 1 with concrete, and use the plug plate 6 to squeeze the concrete to compact the concrete, thereby achieving the sealing of the hollow tube 1.

[0042] The staff can remove the stud 2 after the concrete solidifies for next use, and finally fill the hollow tube 1 with concrete to seal the hollow tube 1, thereby reducing the possibility of water seepage in the hollow tube 1, further improving the sealing performance of the hollow tube 1, and improving the sealing effect of the water-stop screw.

[0043] Embodiment 2: The difference between this embodiment and embodiment 1 is that the connection method of the stud 2 is different.

[0044] Reference Figure 5 , Figure 6 and Figure 7 The water stop steel plate 11 is fixedly connected with a connecting tube 7 at a position corresponding to the hollow tube 1, and one end of the stud 2 is fixedly connected with two limiting blocks 23. A moving groove 71 is opened at a position corresponding to the limiting blocks 23 of the connecting tube 7, and a rotating arc groove 72 is opened at one end of the moving groove 71 close to the water stop steel plate 11, and the center of the rotating arc groove 72 is located on the axis of the connecting tube 7. A limiting groove 73 that is plugged and matched with the limiting blocks 23 is opened at one end of the rotating arc groove 72 away from the moving groove 71.

[0045] Reference Figure 5 and Figure 7 One end of the stud 2 is also fixedly connected to a connecting spring 21, and one end of the connecting spring 21 away from the stud 2 is fixedly connected to a contact plate 22. When the stud 2 is installed, the contact plate 22 fits the water stop steel plate 11, and the connecting spring 21 is compressed.

[0046] When installing the stud 2, the staff inserts one end of the stud 2 into the hollow tube 1, and the limiting block 23 slides and fits in the movable groove 71 until the limiting block 23 enters the rotating arc groove 72, and then rotates the stud 2 until the limiting block 23 is aligned with the limiting groove 73, pulls the stud 2, and makes the limiting block 23 plug and fit into the limiting groove 73. At the same time, the contact plate 22 contacts the water-stop steel plate 11, so that the connecting spring 21 applies a force to the stud 2, so that the limiting block 23 is restricted in the limiting groove 73, and the installation of the stud 2 is realized.

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A reusable water-stop screw, characterized in that: The invention comprises a hollow tube (1), a stud (2), a clamping block (3) and a clamping nut (4) installed between two templates (01); the hollow tube (1) is connected to a water stop steel plate (11); one end of the stud (2) is detachably connected to the inside of the hollow tube (1); the clamping block (3) is arranged on the template (01); the other end of the stud (2) passes through the clamping block (3); the clamping nut (4) is threadedly engaged with the other end of the stud (2); the clamping block (3) is located between the clamping nut (4) and the template (01); after the concrete between the two templates (01) solidifies, the stud (2) is taken out and the hollow tube (1) is filled with concrete.

2. The reusable water-stop screw according to claim 1, characterized in that: A connecting nut (5) is connected to the position of the water-stop steel plate (11) corresponding to the hollow tube (1); the connecting nut (5) is located inside the hollow tube (1); one end of the stud (2) is threadedly matched with the connecting nut (5).

3. The reusable water-stop screw according to claim 1, characterized in that: The water-stop steel plate (11) is connected to a connecting tube (7) at a position corresponding to the hollow tube (1), one end of the stud (2) is connected to a limiting block (23), a movable groove (71) is formed at a position corresponding to the limiting block (23), a rotating arc groove (72) is formed at one end of the movable groove (71) close to the water-stop steel plate (11), the center of the rotating arc groove (72) is located on the axis of the connecting tube (7), a limiting groove (73) matching the shape of the limiting block (23) is formed at one end of the rotating arc groove (72) away from the movable groove (71), and when the stud (2) is installed, the limiting block (23) is located in the limiting groove (73).

4. The reusable water-stop screw according to claim 3 is characterized in that: One end of the stud (2) is connected to a connecting spring (21), and one end of the connecting spring (21) away from the stud (2) is connected to a contact plate (22).

5. The reusable water-stop screw according to claim 1, characterized in that: The abutment block (3) is provided with two abutment grooves. Two steel pipes (31) are arranged between the abutment block (3) and the template (01). The abutment grooves match the shapes of the steel pipes (31). The steel pipes (31) are located between the template (01) and the abutment grooves.

6. The reusable water-stop screw according to claim 1, characterized in that: The surface of the water-stop steel plate (11) is coated with a polytetrafluoroethylene coating.

7. The reusable water-stop screw according to claim 1, characterized in that: The hollow tube (1) is a PVC tube.

8. The reusable water-stop screw according to claim 1, characterized in that: The water stop steel plate (11) is connected to a limiting ring (111), the template (01) is connected to a fixing ring (011) at a position corresponding to the hollow tube (1), one end of the hollow tube (1) is connected to the limiting ring (111), and the other end is connected to a mounting ring (12), and the mounting ring (12) is sleeved on the fixing ring (011).

9. The reusable water-stop screw according to claim 1, characterized in that: A plug plate (6) is arranged outside the hollow tube (1), the outer shape of the plug plate (6) matches the inner hole of the hollow tube (1), a fixing column (61) is connected to the plug plate (6), and a plurality of reinforcing rods (62) are connected between the plug plate (6) and the fixing column (61).

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