Anti-crystallization replaceable filling type drain pipe

Abstract

The invention discloses an anti-crystallization replaceable filling type drain pipe which comprises a PVC pipe, and the drain pipe is composed of the PVC pipe, a hollow filling sponge and a permeable stone pipe cover. Threads are arranged at the pipe end of the PVC pipe, the hollow filling sponge is cylindrical, a hollow channel is reserved in the sponge to facilitate water passing, and the permeable stone pipe cover is provided with a rubber sealing ring and the threads and used for being fixed to a pipe opening of the drainage pipe and preventing air from entering the space in the pipe. The sponge is embedded in a traditional PVC pipe, water is drained through water permeability of the sponge, solute of drained water is slowed down through water retention of the sponge to reach a supersaturated state, pipe blockage caused by crystallization of minerals in the tunnel drainage pipe is effectively prevented, meanwhile, the permeable stone pipe cover and the PVC pipe are combined, installation is convenient and fast, and the manufacturing cost is low.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel drainage engineering, and more specifically, to an anti-crystallization replaceable filling type drainage pipe. Background Art

[0002] Field research in the project shows that the phenomenon of drainage pipe blockage exists during the construction and operation of tunnels in karst areas. Because the groundwater in the karst area is rich in calcium ions, calcium carbonate crystals will precipitate when the groundwater flows out of the tunnel drainage pipe and then adhere to the pipe wall, which is easy to cause chemical blockage on the drainage pipe wall, thereby affecting the drainage efficiency and increasing the external water pressure of the tunnel lining, affecting the safety and stability of the structure. Therefore, calcium carbonate crystal blockage in tunnel drainage pipes is one of the important problems that plague the safe and normal operation of tunnels. There is currently no effective and low-cost solution to the crystal blockage of drainage pipes caused by other external natural factors during operation.

[0003] The CO2 released by vegetation on the tunnel surface through respiration at night is one of the main sources of CO2 in the tunnel. CO2 dissolves in water. When it is rich in calcium ions and discharged through the drainage pipe, it will quickly react with CO2 in the air to form calcium carbonate. After dry-wet cycles, crystals will precipitate and adhere to the pipe wall. Over time, the drainage pipe will be gradually filled and blocked by crystals. At present, there is no device in China that can effectively solve the problem of crystal blockage in tunnel transverse drainage pipes. Summary of the invention

[0004] In order to make up for the above shortcomings, the purpose of the present invention is to provide an anti-crystallization replaceable filling drainage pipe with convenient construction, low cost, low maintenance frequency and difficulty to solve the problems in the above background technology.

[0005] The present invention discloses an anti-crystallization replaceable filling drainage pipe, comprising a PVC pipe, which is composed of a PVC pipe, an internal hollow filling sponge, and a permeable stone pipe cover. The end of the PVC pipe is provided with a thread matching the pipe cap, the internal hollow filling sponge is cylindrical, a hollow channel is left in the sponge for convenient water flow, the permeable stone is only permeable to water but not to air, and the pipe cover is provided with a rubber sealing ring and a thread, which is used to be fixed on the pipe mouth of the drainage pipe and prevent air from entering the space inside the pipe.

[0006] Among them, the length of the PVC drainage pipe can be set according to needs, such as the thickness of the tunnel arch foot, and the thread length should not be less than 2 cm.

[0007] Furthermore, the drain pipe is filled with a cylindrical sponge that runs through the entire pipe section. A high-density, fine-pore, and highly permeable water-retaining sponge is selected, and a hollow channel is left inside to increase the water-passing cross-sectional area.

[0008] Furthermore, the permeable stone of the pipe cover is in the shape of a cake, and the diameter matches that of the drainage pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions in the present invention, the drawings required for use in the embodiments or prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0010] Figure 1 It is a three-dimensional assembly cross-sectional effect diagram of the present invention;

[0011] Figure 2 It is a detailed structural diagram of the present invention; DETAILED DESCRIPTION

[0012] The following will provide a clear, complete and detailed description of the technology in the patent of the present invention in conjunction with the drawings in the patent of the present invention.

[0013] refer to Figure 1 It can be seen that the present invention is a crystallization-proof replaceable filling drainage pipe, including a PVC pipe, which is composed of a PVC pipe, an internal hollow filling sponge, and a permeable stone pipe cover. The end of the PVC pipe is equipped with a thread matching the pipe cap, the internal hollow filling sponge is cylindrical, and a hollow channel is left in the sponge for convenient water flow, the permeable stone is only permeable to water but not air, and the pipe cover is equipped with a rubber sealing ring and a thread, which is used to be fixed on the pipe mouth of the drainage pipe and prevent air from entering the space inside the pipe.

[0014] Specifically, the drain pipe is filled with a cylindrical sponge that runs through the entire pipe section. A high-density, fine-pore, and highly permeable water-retaining sponge is selected, and a hollow channel is left inside to increase the water-passing cross-sectional area.

[0015] Specifically, the pipe cover material is a PVC pipe, the permeable stone is embedded in the pipe cover, and the edge of the permeable stone is filled and fixed with waterproof glue.

[0016] Specifically, the diameter of the sponge is slightly larger than the diameter of the PVC pipe, and the sponge is pressed into the pipe section by utilizing its elasticity so that no gap is left between the sponge and the PVC pipe wall.

[0017] Specifically, the diameter of the pipe cover sealing ring is consistent with the diameter of the drain pipe. During installation, the pipe cover is tightened and fixed at the pipe mouth by threads to ensure that the discharged water in the drain pipe only flows out from the permeable stone.

[0018] According to the actual situation, determine the usage status of the filling sponge in the tube. When the filling sponge hardens, remove the tube cover in time for replacement.

[0019] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An anti-crystallization replaceable filling type drainage pipe, comprising a PVC pipe, characterized in that: The PVC pipe end has a threaded interface and is equipped with a detachable permeable stone pipe cover. The interior is filled with high-density sponge and runs through the entire pipe section. A hollow water passage is left inside the high-density sponge. The filling sponge can be replaced at any time. The permeable stone is in the shape of a cake and is embedded in the threaded pipe with a rubber sealing ring to form a pipe cover.

2. The anti-crystallization replaceable filling type drain pipe according to claim 1, characterized in that: The inside of the PVC drain pipe is filled with water-retaining sponge.

3. The anti-crystallization replaceable filling type drain pipe as claimed in claim 1, characterized in that The permeable stone pipe cover (2) is fixed to the pipe opening of the PVC drainage pipe through threads and a sealing ring.

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