CN201318518Y

CN201318518Y - Direct connector for pipe fittings

Info

Publication number: CN201318518Y
Application number: CNU2008201303942U
Authority: CN
Inventors: 王栋
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-12-14
Filing date: 2008-12-14
Publication date: 2009-09-30
Anticipated expiration: 2018-12-14

Abstract

The utility model discloses a direct connector for pipe fittings, which comprises two socket reducing sleeves and a short pipe, wherein, male threads are formed at the two ends of the short pipe which is in threaded connection with the socket reducing sleeves; and a seal ring snap ring matched with the screw threads on the short pipe is arranged on the short pipe. The utility model adopts spiral self-tapping principle to generate self-tapping action between the socket reducing sleeves and the screw-threaded short pipe through external force, and has the characteristics of scientific and reasonable design, convenient use, easy operation, convenient connection, high connection strength, long service life, aging resistance, scale formation resistance, dewatering performance and low cost. The direct connector for pipe fittings can be used for as long as 50 years under a normal working condition; and the manufacturing cost thereof can be reduced by 30% compared with a metal pipe fitting of the same type.

Description

A kind of fitting to fitting

Technical field

The utility model belongs to a kind of pipe fitting technology, particularly a kind of fitting to fitting.

Background technique

China's shortage of water resources, can utilize gross amount of water resources is 2.8 billion cubic meters, and the occupancy volume per person is 1/4 of a world average level only, and wherein agricultural water takies about 80%, and agricultural water wasting phenomena is very serious.Tenth Five-Year Plan Period 1.5 hundred million mu of newly-increased water-saving irrigation areas, wherein spray 7,900 ten thousand mu, 1,000 ten thousand mu of drip irrigations, 1,400 ten thousand mu of pipeline water deliveries are finished 1000kt such as all kinds of tubing of this need of work, pipe fitting, shower nozzle, increase more than 1,000 hundred million yuan of investments.Wherein a part adopts the PE material, estimates that the PE pipe market share in this field coming years will also can be multiplied.But realize between the PE pipe in the farmland water-saving irrigation at present that the pipe fitting technology that connects is relatively backward, can not satisfy agricultural demand, and have bigger hysteresis quality that exist connection constant in practical application, problems such as poor sealing performance directly influence installation speed.Need develop a kind of directly special pipe fitting of in farmland water-saving is irrigated, realizing between the PE pipe fast for this reason.

Summary of the invention

The utility model purpose provides and a kind ofly can effectively improve the simplicity that pipeline is connected with pipe fitting and the fitting to fitting of sealing and fixing.

For achieving the above object, solution of the present utility model is: a kind of fitting to fitting, short tube by two socket joint reduction centers and two ends design external screw thread connects to form, and described socket joint reduction center and short tube are threaded, and described short tube is provided with the seal ring snap ring suitable with its screw thread form.

The utility model design is gone up and is adopted spiral self tapping principle, forms the self tapping effect by external force between socket joint reduction center and the screw thread short tube, and it is reasonable to have design science, easy to use, operate simple and easy, easy to connect, the join strength height, long service life reaches 50 years in normal working conditions, and is ageing-resistant, non-scaling, characteristics such as the power water-based is strong, cheap, the comparable metal pipe element of the same type of cost saves 30%.

Description of drawings

Fig. 1 is the utility model embodiment's a structural representation.

Embodiment

As shown in Figure 1, a kind of fitting to fitting described in the utility model, short tube 2 by two socket joint reduction centers 1 and two ends design external screw thread connects to form, and described socket joint reduction center 1 and short tube 2 are threaded, and described short tube 2 is provided with the seal ring snap ring 3 suitable with its screw thread form.Described seal ring snap ring 3 is a helical, and it is ductile.Described socket joint reduction center 1 is enclosed within the pipe outer wall of PE pipe, socket joint reduction center 1 appearance is designed to polygonal, be convenient to manually screw this socket joint reduction center, making it closely be connected two ends opens on the short tube 2 of silk, end with seal ring snap ring 3 is connected on the tube head of PE pipe again, the outer wall of seal ring snap ring 3 has the half-open osculum in four roads to be divided into 4 half, can freely stretch in the time of on being nested in the PE pipe, there are four sections tongues at the outer wall middle part of snap ring, its effect is to be stuck in socket joint reduction center inwall, the PE tube head that fixedly is inserted in, the inwall that the short tube 2 of silk is driven at two ends is equipped with the rubber seal of being close to tube wall, make the PE tube head tightly withstand on the rubber seal, this rubber seal has very strong rebound elasticity, seal ring snap ring 3 fixing PE tube head and screw thread short tubes form the self tapping effect, follow the power of self tapping effect to stretch automatically, at last the short tube 2 of socket joint reduction center 1 with two ends design screw thread is connected, the other end with the seal ring snap ring is connected with another root PE pipe equally, screw the polygonal of socket joint reduction center 1 outside, make it closely be connected two ends and open the installation of finishing on the short tube 2 of silk the PE pipe.

Above-mentioned PE is direct, changed the connection way that adopts hot melt in the past, and only need select for use the utility model just can reach purpose of connecting, technical difficulty reduces greatly, adopt by hand and just can carry out good connection, simple installation, workable, sealing is good, effectively solved the common run, drip, leak phenomenon of such pipe fitting, cheap, can effectively reduce the construction work cost, the utlity model has the join strength height, ageing-resistant, corrosion resistance is strong, can repeatedly dismantle use.

Claims

1. fitting to fitting, short tube (2) by two socket joint reduction centers (1) and two ends design external screw thread connects to form, it is characterized in that: described socket joint reduction center (1) and short tube (2) are threaded, and described short tube (2) is provided with the seal ring snap ring (3) suitable with its screw thread form.

2. a kind of fitting to fitting according to claim 1 is characterized in that: described seal ring snap ring (3) is a helical, and it is ductile.

3. a kind of fitting to fitting according to claim 1 is characterized in that: described socket joint reduction center (1) external form is a polygonal.