Background
The plastic pipe has the advantages of good corrosion resistance and flexibility, so that the plastic pipe is particularly suitable for a water supply and drainage pipe network.
The existing plastic pipe connection modes mainly comprise plastic welding, flange connection and the like.
Plastic welding refers to a joining method in which two plastic parts are joined into a single body by simultaneously melting the contact surfaces of the two plastic parts by heating. The prior art plastic welding techniques include hot plate welding, hot air welding, hot bar and pulse welding, etc. The hot plate welding is to melt and soften two planes to be welded by a plane electric heating plate, then quickly remove the electric heating plate, combine the two planes and apply force to the two planes for cooling. The hot air welding means that when hot air flow is directly blown to a joint area, filler wires which are made of the same material as the base metal in the joint area are melted.
The flange connection adopts a mechanical method, the common flanges are made of cast iron, alloy and the like and are used for fastening plastic parts, the expansion coefficients or the contraction coefficients are different, the connection quality is not high, and the cost is higher.
The connecting device or the connecting method have the defects of inconvenient construction on site at a construction site, long construction time, low economic benefit, incapability of ensuring the connection quality, short service life and other engineering quality problems.
Disclosure of Invention
In order to overcome the defects of the existing plastic pipe connecting mode, the invention provides a plastic pipe combined type sealing connecting device.
The plastic pipe combined type sealing connection device comprises an outer pipe, an inner pipe, a rubber sealing ring and a heating element, wherein the rubber sealing ring and the heating element are arranged between the connection parts of the outer pipe and the inner pipe; the connection relationship of the plastic pipe combined type sealing connection device is as follows: the outer pipe needing to be connected is placed horizontally, then a heating element is installed on the inner wall of the outer pipe, and then a rubber sealing ring is installed in a sealing groove on the inner wall of the outer pipe, or: a heating element is arranged on the outer wall of the inner pipe, and then a rubber sealing ring is arranged in a sealing groove on the outer wall of the inner pipe; the outer pipe is in butt joint with the inner pipe, then the heating element is electrified, the heating element generates heat and is connected with the inner wall of the outer pipe and the outer wall of the inner pipe in a melting mode, and the rubber sealing ring and the heating element are welded in a melting mode to form the double-combined type sealing connection plastic pipe.
When the inner tube be the plain-walled pipe of equal pipe diameter, then: the plastic pipe combined type sealing connection device is characterized in that a sleeve pipe is adopted to replace an outer pipe, two inner pipes, one sleeve pipe, a rubber sealing ring and a heating element form the plastic pipe combined type sealing connection device, and the connection relation of the plastic pipe combined type sealing connection device is as follows: the method comprises the steps of firstly, horizontally placing two inner pipes with the same pipe diameter to be connected, installing a rubber sealing ring and a heating element on the inner wall of a connecting sleeve, then, sleeving the connecting sleeve on a left inner pipe, butting a right inner pipe with the left inner pipe, namely, butting the right end face of the left inner pipe with the left end face of the right inner pipe, electrifying the heating element after butting in place, heating and melting the inner wall and the outer wall of the connecting sleeve by the heating element, and fusion welding the rubber sealing ring and the heating element to form the double-combined type sealed connecting inner pipe and the sleeve.
When the outer pipe is manufactured into a socket pipe with a socket at one end, then: the inner pipe is a socket pipe, and a plastic pipe combined type sealing connecting device is composed of a socket pipe, a rubber sealing ring and a heating element, and the connection relation of the socket pipe and the socket pipe combined type sealing connecting device is as follows: the socket pipe and the spigot pipe which need to be connected are horizontally placed, the rubber sealing ring and the heating element are installed between the socket pipe and the spigot pipe, the heating element is electrified after the socket pipe and the spigot pipe are in butt joint, the heating element heats and melts to connect the inner wall of the socket pipe and the outer wall of the spigot pipe, and the rubber sealing ring and the heating element are welded in a melting mode to form a double-combined sealing mode to connect the socket pipe and the spigot pipe.
The inner wall of the socket pipe is provided with a sealing groove for mounting a rubber sealing ring; the socket pipe is matched with the socket pipe, and a rubber sealing ring and a heating element are arranged at the joint of the socket pipe and the socket pipe.
The inner pipe is a socket pipe; the socket pipe is matched with the socket pipe, and the outer wall of the socket pipe is provided with a sealing groove for mounting a rubber sealing ring; and a rubber sealing ring and a heating element are arranged at the joint of the socket pipe and the spigot pipe.
The rubber sealing ring is as follows: at least more than one rubber sealing ring is arranged.
The heating element is as follows: at least more than one group of heating elements are arranged.
The heating element is any one of a heating wire and a heating sheet.
The rubber sealing ring and the heating element are at least used when the nominal pipe diameter of the inner pipe is less than 500 cm
More than one rubber sealing ring and more than one group of heating elements are arranged.
The rubber sealing rings and the heating elements are at least provided with more than two rubber sealing rings and more than two groups of heating elements when the nominal pipe diameter of the inner pipe is more than 500 cm. The connecting process method of the plastic pipe combined type sealing connecting device comprises the following steps:
a method for connecting a combined type sealed plastic inner pipe and a sleeve.
The method comprises the following steps: checking a plastic inner pipe, a sleeve, a rubber sealing ring and a heating element of the plastic pipe combined type sealing connection device; comprises a socket pipe and a spigot pipe; after the requirement of safe production is met, the installation and connection are started;
the method comprises the following steps: cleaning the outer wall of the plastic pipe and the inner wall of the sleeve, particularly the positions of a sealing groove and a heating element;
the method comprises the following steps: the inner wall of the sleeve is sequentially provided with a rubber sealing ring and a heating element;
the method comprises the following steps: the plastic pipe to be installed is well installed and positioned, the left side of the sleeve is butted with the right side of the left end plastic pipe according to the design size requirement, then the right side of the sleeve is butted with the left side of the right end plastic pipe according to the design size requirement,
the method comprises the following steps: checking whether the connection position meets the design requirement or not, and whether the rubber sealing ring is installed in place or not, wherein the heating element is intact;
the method comprises the following steps: determining that the rubber sealing ring of the connecting sleeve is in place, and switching on a power supply of the heating element after the heating element is not damaged, and heating, melting and welding;
the method comprises the following steps: checking the fusion welding quality of the connecting position of the heating element to meet the technical requirements; and (5) delivering for use. And finishing the pipeline connection installation construction.
The noun defines:
level: a plane parallel to the horizontal plane of the earth.
Left: the left side of the combined sealing and connecting device facing the horizontally placed plastic pipes is defined as the left side.
And (3) right: the right side of the combined sealing connection device facing the horizontally placed plastic pipes is defined as the right side.
Left side: the left side of the modular sealing connection facing horizontally placed plastic pipes is defined as the left side.
Right side: the right side of the modular sealing joint facing horizontally placed plastic pipes is defined as the right side.
The utility model discloses plastic tubing combination formula sealing connection device's apparent characteristics and technical progress are: the technical route is designed to adopt a rubber sealing ring and heating element fusion welding double-sealing technical means, the technical effects of realizing simple process flow, ensuring sealing quality and improving the sealing performance, the compression resistance and the outer surface corrosion resistance of the plastic pipe combined sealing connecting device are achieved, and the technical purpose of realizing is to reduce the production and construction cost as much as possible and improve the economic benefit; the defects that the plastic of the inner wall and the outer wall of the joint of the pipe is cracked, water leakage occurs and the service life is shortened in the installation and use process are overcome; the key is that the pipeline connection is firmer, the sealing and leakage-free are ensured, the manufacturing, construction, operation and maintenance costs of the pipe are reduced, and the economic benefit is improved.