CN2670722Y

CN2670722Y - Spigot joint of plastic pipe

Info

Publication number: CN2670722Y
Application number: CNU2003201188922U
Authority: CN
Inventors: 高其容; 黄尧舜; 何宏东
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-12-01
Filing date: 2003-12-01
Publication date: 2005-01-12
Anticipated expiration: 2013-12-01

Abstract

The utility model relates to a spigot joint of plastic pipe. The port of the pipe material is inserted in the spigot opening of the spigot joint. A groove which is depressed toward the interior of the pipe wall along the circumferential direction is arranged the position which is close to the port of the joint. A rubber sealing ring which is matched with the groove is arranged in the groove. A smoothness structure, a circumferential direction reinforcing rib which is formed by protruding outwards, or an axial direction reinforcing rib is arranged at the position where the pipe wall of the external side is corresponding to the bottom of the groove. The spigot joint of the utility model is a flexible joint which can be installed in any climate and environment. Few auxiliary tools are needed, which reduces the labor intensity of workers. The rubber sealing ring which is installed in the spigot opening can effectively support and connect the pipes with large diameters, and can effectively prevent the leakage. The adoption of the plastics as the manufacture raw materials makes the joint has the advantages of good resistance to chemical attack performance, aging resistance, coldness resistance, light weight, convenient transportation and operation, low cost of operation, management and maintenance, good economy, non toxicity and environmental protection.

Description

A kind of spigot and socket type pipe joint of plastic tube

Technical field

The utility model relates to a kind of plastic pipe, is meant the flexible spigot-and-socket joint assembly when connecting in the socket joint mode mutually between a kind of large-bore plastics tubing especially.

Background technique

In the market the heavy-caliber plastic pipe of Xiao Shouing particularly the joint that uses of heavy caliber winding structure pipe mostly be injection molding part or even make moulding by hand.When adopting injection molding because heavy caliber makes the fabricating cost of mould high and require in course of working at the large-tonnage injection molding machine, produce drop into bigger; Adopting the manual manufacture joint to be subjected to workman's self technical merit to influence big and be difficult to reach produces in batches and stable product quality.Using joint at present also has electric heating to melt the connecting band joint, though can solving tubing, this technology connects and the quality consistency problem, but still there are some defectives in this technology in connection procedure: one, and operation must be carried out under the environment of drying, and meeting sleety weather and construction ground humidity all can not operation; Its two, must be equipped with working tools such as clamping plate, power line, electric welding machine, field work must be power autonomous, causes construction labor intensity big and work procedure is numerous and diverse thus; Its three, during construction, the hot melt control and the molten connecting band of electric heating of the molten connecting band of electric heating are all had relatively high expectations with the technology of the cooperate degree of large-diameter pipe and construction workman's technical merit, have misoperation the phenomenon that not prison welding consequently occurs leaking will occur slightly; Its four, because of the manufacture cost height, the molten connecting band sale price of market of electric heating commonly used is higher.The technology of China's ZL0225295.9 patent " a kind of novel multi-use plastic pipe " and ZL0311724.4 patent " porose Steel Skeleton strengthens the composition polymer pipe coupling " narration is exactly the note to the molten connecting band technology of electric heating.China's ZL0223042.1 patent " the socket joint device that tubing is connected with pipe fitting " discloses a kind of improvement technology, comprise pipe fitting, screw thread neck bush, nut, O type circle, jump ring, sealer, tubing, groove, during assembling the screw thread neck bush is screwed in tubing one end that has internal thread, be rolled into groove at tubing one end, jump ring is inserted in the groove, O type snare is gone in the screw thread neck bush, after an end of tubing is coated with the last layer sealer, tubing is inserted in the pipe fitting, relend and help nut to connect locking; The advantage of this technology is an easy construction, manufacturability and workmen's technical merit is had no special requirements, but its Component still dislikes more and cause the program in the operation numerous and diverse.

Summary of the invention

The purpose of this utility model provides that a kind of integral installation distribution structure is simple, and Component are few, and work procedure is few, the spigot-and-socket joint of the less demanding plastic tube of Job Operations manufacturability.

Designed a kind of plastic tube spigot-and-socket joint according to above-mentioned purpose, comprise the spigot and socket type pipe joint, the port of tubing is inserted in the birdsmouth of spigot and socket type pipe joint, be provided with along circumferential groove at the proximal port place of spigot and socket type pipe joint, be provided with the seal ring that is complementary with this grooved in the groove to the tube wall sunken inside.With to the corresponding outside tube wall of the bottom land of tube wall sunken inside also spirogyrate stiffening rib circumferentially correspondingly, outside tube wall also can be complete, level and smooth integral type certainly, at this moment can be at tube wall arranged outside shaft orientation reinforcing rib.Simultaneously, the groove to the tube wall sunken inside has at least more than 1.The seal ring that is adopted is special-shaped circle, and the inboard indentation of this circle cross section also can return the type hook to what side setting of the mouth of pipe and seal ring fused at seal ring, and this rhampotheca is on the port edge of pipe joint.

Because seal ring adopts anti-corrosion rubber manufacturing, so the spigot-and-socket joint that the utility model provides is flexible joint, no matter so under any weather and environment, all can implement installation exercise, assistant tool required when in addition constructing is few, installation is simple, work procedure is few, less demanding to the Job Operations manufacturability, reduced workmen's labor intensity to a great extent; Simultaneously because of on the birdsmouth inwall, rubber seal being installed, except that can effectively supporting, connect the large-diameter pipe, leakage proof more effectively.In addition, the utility model pipe joint can adopt high density polyethylene (HDPE) for mainly making raw material, thus resistance to chemical corrosion is good, also ageing-resistant, cold-resistant; In light weight, be convenient to transportation, construction, construction, management, maintenance expenses are low, good economy performance; And nontoxic, environmental protection.

Description of drawings

Accompanying drawing 1 is the assembling complete section schematic representation of the utility model when adopting a kind of seal ring;

Accompanying drawing 2 is the utility model assembling complete section schematic representation when adopting another kind of seal ring.

Specific embodiments

Thinking of the present utility model is according to prior art complexity, expensive, defective that difficulty of construction is big, under the prerequisite of the basic structure that does not change existing joint, provides a kind of simple in structure, cost is low, construction is easy, sealing is high bell and spigot joint.

With reference to accompanying drawing.The joint that the spigot-and-socket joint that the utility model provides is promptly special-purpose also fuses with tubing and is positioned at the joint of tubing one end.Be that example is illustrated below with the special joint.Outer wall design at connected joint 1 has circumferential stiffening rib 11 or shaft orientation reinforcing rib, also can be designed to not have the level and smooth outer wall of stiffening rib certainly.When being circumferential stiffening rib, the position of stiffening rib and the width of muscle corresponding with the groove 2 to the tube wall sunken inside that seal ring 3 is installed and the width of groove adapt.Seal ring is anti-corrosion rubber system, is the abnormal shape circle, the cross section indentation 31 of the surface of contact of this circle and insertion tubing.Seal ring can be simple abnormal shape circle, also can be provided with time type hook 32 that fuses with seal ring to a side of the mouth of pipe at seal ring.The type rhampotheca that returns of seal ring wraps on the port edge of joint and with port, more demonstrated fully the definition that flexibly connects, and sealability is better.

Claims

1, a kind of spigot and socket type pipe joint of plastic tube comprises spigot and socket type pipe joint (1), and the port of tubing is inserted in the birdsmouth of spigot and socket type pipe joint, it is characterized in that

Be provided with along circumferential groove (2) at the proximal port place of spigot and socket type pipe joint, be provided with the seal ring (3) that is complementary with this grooved in the groove to the tube wall sunken inside.

2, connected pipe joint according to claim 1, it is characterized in that with to the corresponding outside tube wall of the bottom land of tube wall sunken inside also spirogyrate stiffening rib (11) circumferentially correspondingly.

3, connected pipe joint according to claim 1 is characterized in that in the tube wall arranged outside shaft orientation reinforcing rib being arranged.

4, connected pipe joint according to claim 1 is characterized in that the tube wall outside is complete smooth structure.

5,, it is characterized in that described groove to the tube wall sunken inside has at least more than 1 according to described each connected pipe joint of claim 1 to 4.

6, connected pipe joint according to claim 5 is characterized in that described seal ring is special-shaped circle, the inboard indentation (31) of this circle cross section, be fixed on its shape be complementary in the groove of tube wall sunken inside.

7,, it is characterized in that seal ring is provided with time type hook (32) that fuses with seal ring to a side of the mouth of pipe according to described each connected pipe joint of claim 1 to 4.