Novel combined type water stop screw

Abstract

A novel combined type water stop screw comprises an FRP water stop piece, FRP water stop inner rods, a steel outer rod and a plastic positioner, the two sides of the FRP water stop piece are connected with the FRP water stop inner rods respectively, the outer ends of the FRP water stop inner rods penetrate through the end face of the plastic positioner and are in threaded connection with the end face of the plastic positioner, and the outwards-extending threaded sections of the FRP water stop inner rods are connected with the inner ends of threads of the steel outer rod. While the construction convenience and the construction efficiency are improved, the problems of wall leakage, painting rust and the like caused by the use of the water stop screw rod can be fundamentally avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to waterproof engineering field relates to a water stop screw. BACKGROUND

[0002] The concrete wall with waterproof function adopts the water stop screw for formwork reinforcement according to the specification. The early traditional water stop screw method is that a water stop piece is welded in the middle of a single screw, wherein the screw can play a role in reinforcing the formwork, and part of the screw is poured into the concrete, and the water stop piece in the middle plays a role in water stop. This method faces two major problems: 1. difficult to remove, after the concrete is poured, it is difficult to remove the formwork, and it is also difficult to cut off the exposed screw in the concrete; 2. the subsequent screw hole plugging process is complex and has five steps: hole expansion, rust prevention paint brushing, cleaning and wetting, waterproof mortar layering and filling, and two round waterproof plugging. In the actual operation on the construction site, there are often cases of violent removal and incomplete screw hole plugging. As a result, after the project is delivered for a period of time, the water stop rod left in the wall rusts, which leads to leakage of the waterproof wall and rust marks on the indoor paint at the water stop rod, affecting normal use.

[0003] At present, the segmented water stop screw is also widely used, and the screw needs to be connected into a whole by a connecting nut in the middle, which effectively solves the problem of difficult removal of the traditional water stop screw, but the problem of complex screw hole plugging process is not solved, and there are five steps: removing the connecting nut, brushing rust prevention paint, cleaning and wetting, waterproof mortar layering and filling, and two round waterproof plugging. The on-site construction is often not in place, so it is still not possible to effectively avoid the problems of leakage and paint rust marks in the waterproof wall.

[0004] The root cause of the above problems is that the water stop rod left in the wall is made of steel material, which is easy to rust in the presence of water or humid air, and then causes leakage. In addition, the screw hole plugging process requires more steps and complex process, which is difficult to completely implement. SUMMARY

[0005] In order to overcome the deficiencies of the existing water stop screw in terms of difficult removal and complex screw hole plugging, the utility model provides a novel combined water stop screw, which can improve the construction convenience and construction efficiency, and avoid the problems of wall leakage and paint rust marks caused by the use of water stop screw from the root.

[0006] The technical scheme adopted by the utility model to solve its technical problems is:

[0007] The utility model provides a new combined water stop screw rod, which comprises an FRP water stop sheet, an FRP water stop inner rod, a steel outer rod and a plastic positioner, the two sides of the FRP water stop sheet are connected with the FRP water stop inner rod respectively, the outer end of the FRP water stop inner rod penetrates through the closed end of the plastic positioner and is connected with the plastic positioner, and the outer threaded section of the FRP water stop inner rod is threadedly connected with the inner end of the steel outer rod.

[0008] Further, the plastic positioner is outwardly open, the closed end of the plastic positioner is provided with threads, and the FRP water stop inner rod is threadedly connected with the closed end of the plastic positioner.

[0009] Still further, the inner side surface of the plastic positioner is provided with a concave point for connecting with the filled concrete, and the outer side surface of the plastic positioner is provided with a convex point for connecting with the filled concrete.

[0010] Preferably, the FRP water stop sheet and the FRP water stop inner rod are integrated.

[0011] Still further, the new combined water stop screw rod further comprises a mountain-shaped clamp and a fixing nut, the mountain-shaped clamp is sleeved on the steel outer rod and is fixed through the fixing nut.

[0012] The technical concept of the utility model is as follows: compared with steel bars, FRP bars have similar mechanical properties and deformation properties, can be well combined with concrete, will not rust, have better durability than ordinary steel bars, and can be flexibly processed into various shapes. The utility model makes full use of the above-mentioned advantages, uses FRP material to manufacture the water stop inner rod. The middle water stop sheet and the inner rod are integrally formed and do not need to be welded, so that the water resistance is stronger, the inner rod is poured in concrete and can be effectively bonded with the concrete, so that the purpose of water stop is achieved.

[0013] The plastic positioner plays a role in controlling the thickness of the wall body by being connected with the inner rod through threads, and protruding points are arranged on the outer surface of the plastic positioner and concave points are arranged on the inner surface of the plastic positioner, so that the plastic positioner can be effectively engaged with the wall body concrete and the sealing material.

[0014] In terms of disassembly and assembly process, the utility model adopts a three-section shape (two outer rods + one inner rod), and uses a plastic positioner + outer rod inner thread combination to replace the commonly used connecting nut, so that the outer rod can be conveniently taken out, the formwork can be conveniently disassembled and assembled, and the hole sealing in the later stage can be conveniently performed, and the process of twice disassembly and assembly of the connecting nut can be reduced.

[0015] In terms of screw rod hole sealing process, because FRP material has good durability and will not rust and corrode, the process of rust prevention and two-time circular waterproof treatment can be omitted, after the formwork is disassembled, the small hole of the plastic positioner is directly compacted and sealed by using high-strength micro-expansion cement mortar, the threaded end of the inner rod exposed in the plastic positioner can play a role of anchorage similar to a planted bar for sealing mortar, and therefore the sealing part can be reliably connected with the concrete wall body.

[0016] The utility model discloses beneficial effect mainly shows in: 1, not only can improve construction and management efficiency, also save the cost simultaneously, 2, in the structural wall body use stage, the reliability also promotes greatly. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is new type combined water stop screw installation system schematic diagram.

[0018] Figure 2 It is plastic positioner schematic diagram.

[0019] The figure sign is: 1.FRP water stop inner rod;2.FRP water stop piece;3. Steel outer rod;4. Fixed nut;5. Mountain type card;6. Plastic positioner, 6.1 with water stop inner rod connection thread, 6.2 with wall body concrete connection convex point, 6.3 with filling concrete connection concave point;7. Reinforcing steel pipe;8. Square wood;9. Formwork;10. Concrete wall body. DETAILED DESCRIPTION

[0020] The utility model will be further described below in conjunction with the drawings.

[0021] Reference Figure 1 And Figure 2 A new type combined water stop screw, including FRP water stop piece 2, FRP water stop inner rod 1, steel outer rod 3 and plastic positioner 6, the two sides of FRP water stop piece 2 are connected with FRP water stop inner rod 1 respectively, the outer end of FRP water stop inner rod 1 passes through the closed end of plastic positioner and is connected with plastic positioner 6, the outer extension thread section of FRP water stop inner rod 1 is connected with the inner thread of one end of steel outer rod 3.

[0022] Further, the plastic positioner 6 opens outward (with FRP water stop piece 2 as the internal center), the closed end of the plastic positioner is provided with a thread, and the FRP water stop inner rod 1 is threadedly connected with the closed end of the plastic positioner.

[0023] The inner side of the plastic positioner 6 is provided with a filling concrete connection concave point 6.3, and the outer side of the plastic positioner 6 is provided with a filling concrete connection convex point 6.2.

[0024] Preferably, the FRP water stop piece 2 and the FRP water stop inner rod 1 are integrated.

[0025] Further, the new type combined water stop screw further includes a mountain type card 5 and a fixed nut 4, the mountain type card 5 is sleeved on the steel outer rod 3, and is fixed through the fixed nut 4.

[0026] The scheme of the embodiment is to make a new FPR waterstop inner rod which is integrally formed with a waterstop piece. The inner rod is connected with two outer rods through the inner nut of the steel outer rod, and together with the plastic positioner, the gable card and the fixing nut, etc. to form a new combined waterstop screw. The outer rod, the plastic positioner and the gable card play a role in positioning and reinforcing the formwork. The inner rod and the waterstop piece thereon are filled and bonded with the concrete to play a role in waterstop. The hole after the outer rod is taken out is plugged with high-strength micro-expansion cement mortar, and then the next process can be entered.

[0027] The construction process of the embodiment is as follows:

[0028] Step 1. Select the diameter and specification of the waterstop inner rod 1 and the steel outer rod 3 according to the thickness and height of the waterproof wall. Generally, the diameter of the inner rod is selected from M12 to M18, and the diameter of the outer rod is selected from M16 to M22.

[0029] Step 2. Install a plastic positioner 6 on both sides of the waterstop inner rod 1 through the thread 6.1, and the opening end of the plastic positioner 6 is outward. Check the size between the two positioners to control the deviation from the wall thickness. Then connect the two outer rods 3 with the waterstop inner rod 1 on both sides through the inner thread.

[0030] Step 3. According to the required screw spacing of the construction scheme, draw a line and open the screw hole at the corresponding position of the two side formworks 9.

[0031] Step 4. After the new combined waterstop screw is inserted through the hole of one side of the formwork 9, the corresponding hole of the other side of the formwork 9 is also inserted into the new combined waterstop screw. The wall thickness is determined by the plastic positioner 6. Then install the gable card 5 and the fixing nut 4 on the outer rod outside the formwork. Ensure that the screw holes on both sides are aligned.

[0032] Step 5. After checking that the formwork joint is flat and the screw spacing meets the requirements of the construction scheme, install the vertical square wood 8 and the horizontal reinforcing steel pipe 7 on both sides in turn, and fix the gable card 5 and the nut 4. After the fixing is completed, ensure that the waterstop screw is perpendicular to the wall, and at the same time ensure that the plastic positioner 6 is tightly attached to the inside of the formwork 9, so as to ensure that the thickness of the concrete wall meets the design requirements.

[0033] Step 6. After the formwork is reinforced and passes the acceptance check, pour the concrete. During the concrete vibrating process, the vibrating rod should be vibrated within the horizontal spacing of the waterstop screw to avoid direct contact with the waterstop screw to prevent deformation and damage, thereby affecting the stability of the formwork reinforcement and the concrete molding effect.

[0034] Step 7. When the concrete reaches the condition for removing the side formwork, first loosen the two side fixing nuts 4, remove the two side gable cards 5; then remove the vertical square wood 8 and the horizontal reinforcing steel pipe 7; then use an electric wrench to rotate and pull out the two steel outer rods 3 from the formwork hole; finally remove the two side formworks 9 of the wall.

[0035] Step 8, the screw hole left by the wall is plugged with high-strength micro-expanding cement mortar, ensuring that the mortar fills and compacts the screw hole and is flush with the wall in the height direction without protruding from the wall.

[0036] Step 9, after the external wall maintenance reaches the conditions, the next process such as external waterproofing construction and internal painting construction is entered.

[0037] The present embodiment uses the outstanding durability of FRP material to design a new water stop inner rod. A new outer rod form is proposed, a new connection method is used to connect the inner and outer rods, and a new disassembly and assembly process and plugging process are proposed. The present embodiment can be used on wall bodies that require waterproofing and sealing performance, such as underground engineering, various pools, civil air defense engineering, etc. Using the present embodiment can not only improve construction and management efficiency, but also save costs. Reliability is also greatly improved during the use stage of the structural wall body.

[0038] The content described in the embodiments of the present specification is only a list of implementation forms of the utility model concept, and is only for the purpose of description. The protection scope of the utility model should not be considered as limited to the specific forms stated in the embodiments, and the protection scope of the utility model also extends to equivalent technical means that can be thought of by those skilled in the art according to the utility model concept.

Claims

1. A new type of combined water-stop screw, characterized in that: The new combined water-stop screw includes an FRP water-stop plate, an FRP water-stop inner rod, a steel outer rod and a plastic locator. The two sides of the FRP water-stop plate are respectively connected to the FRP water-stop inner rod. The outer end of the FRP water-stop inner rod passes through the closed end of the plastic locator and is connected to the plastic locator. The outwardly extending threaded section of the FRP water-stop inner rod is threadedly connected to the inner end of the steel outer rod.

2. A new type of combined water-stop screw according to claim 1, characterized in that: The plastic positioner opens outward, a closed end of the plastic positioner is provided with a thread, and the FRP water-stop inner rod is threadedly connected to the closed end of the plastic positioner.

3. A new type combined water-stop screw as claimed in claim 1 or 2, characterized in that: The inner side surface of the plastic positioner is provided with a concave point for connection with the filling concrete, and the outer side surface of the plastic positioner is provided with a convex point for connection with the filling concrete.

4. A novel combined water-stop screw according to claim 1 or 2, characterized in that: The FRP water-stop plate and the FRP water-stop inner rod are integrated.

5. A novel combined water-stop screw as claimed in claim 1 or 2, characterized in that: The novel combined water-stop screw further comprises a mountain-shaped clip and a fixing nut. The mountain-shaped clip is sleeved on the steel outer rod and fixed by the fixing nut.

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