A-10 water stop needle

规格：

500个/箱

The high-pressure water-stop needle is also called the grouting nozzle.
1 Product Description
The high-pressure water-stop needle uses the principle of ring pressure fastening. The head is equipped with a one-way stop valve to prevent the slurry from spraying back under high-pressure pushing. The ring pressure expansion part uses a rubber casing with a diameter of 0.0 Å. Plug it into the grouting hole with a diameter of 0.0 Å. Tighten the ring pressure expansion bolt and compress the rubber casing to fix the grouting nozzle in the grouting hole. The one-way valve of the grouting nozzle cannot be opened until the upper pressure is applied, so the grouting pressure must be higher than this value. There are currently four types of high-pressure water-stop needles: copper nozzles, aluminum nozzles, steel nozzles, and plastic nozzles. The first three are ring pressure types. It is divided into front water-stop type, that is, the check valve of the inlet of the grouting nozzle is set at the inlet, and rear water-stop type, that is, the check valve of the feed inlet is set at the outlet. The choice can be made according to the specific situation. After the front water-stop type has buried the mouth, the front end can be unscrewed for pressure relief and drainage. When grouting, the rear water-stop type has its mouth buried and the front end can be unscrewed for pressure relief and drainage. However, the grouting mouth can be removed after the construction is completed. construction process. The diameter of the rubber sealing part of the commonly used grouting nozzle is , and a drill bit is required. For dense structures, a grouting nozzle with a length of . For loose structures, a grouting nozzle with a length of .
Two accessories
Rubber pad, butter head rubber, the rubber is made of special rubber material that can withstand high-pressure impact. Under high-pressure squeeze, the rubber head will not be deformed and damaged, causing the medicine to flow out.
The traditional spiral method of butter head removal consumes more than 100 hours of work, and the pressure resistance can reach more than 100%. The four-claw quick connector saves labor and time. The rubber expands rapidly under the extrusion pressure of the agent, and the four claws tightly wrap and adhere to the grouting nozzle.
Precautions
The butter head rubber is easily damaged due to excessive pressure and corrosion of chemical grouting materials during the construction process. Therefore, if damage is found during the construction process, it should be replaced in time, otherwise it will cause slurry leakage.
At the end of the construction, the cleaning agent used to clean the machine has a corrosive effect on the butter head rubber, causing the butter head rubber to be easily damaged, so it should be replaced in time during the next construction.
Three steps before construction
Look for cracks. For wet base layers, clean away the accumulated water first. When the base layer is completely cleaned and the surface is slightly dry, carefully look for cracks and mark them along the cracks with colored pens or chalk. For dry base layers , after cleaning, use an air pump or hair dryer to blow off the surface dust.
According to the thickness of the concrete structure, drill holes at an angle to the left or right of the lowest point of the crack to half the depth of the structure. Drill from low to high in sequence. After drilling to the highest point, bury the water-stop needle again. , since the cracks in the general structure are in an irregular state, special attention must be paid to drilling cross holes on both sides along the direction of the crack when drilling. The hole spacing should be determined according to the actual situation on site. It is based on the principle that the grout can meet at the crack after grouting the two holes. Generally, the hole spacing is appropriate at the beginning. The size of the hole diameter should be determined according to the size of the matching water-stop needle. Use The ones are non-standard drill bits. The holes and crack sections should intersect at a certain degree and should intersect in the middle/range of the bottom plate.
Buried water-stop needle The water-stop needle is a matching component. It is a connecting piece for slurry to be injected into the crack. When burying it, tools should be used to tighten it. Make sure that the rubber part of the needle and the hole wall are dry before use, otherwise it will be tightened. It is easy to cause slipping when solid.
Drill holes in the water seepage/reinforcement area, lock the needle, pour the medicine into the material cup, turn on the power switch, squeeze out the remaining detergent or lubricant in the material cup and tube until the medicine sprays out, and then insert The needle is used to inject the medicine into the wall to stop leakage and reinforce it.
Four applicable scopes: Concrete leakage prevention.