CN222559241U - Cross-linked pipe type self-sealing connection ball valve - Google Patents

Abstract

The utility model provides a cross-linked pipe type self-sealing connection ball valve, and belongs to the technical field of valve connection. The ball valve solves the problems that most of the existing ball valve and pipelines are connected incompletely and water seepage and water leakage risks exist after long-time use. The cross-linked pipe type self-sealing connection ball valve comprises a ball valve body, wherein a QE pipe fitting connector is installed and connected at a port of the ball valve body, a screw sleeve installation step, a plurality of limiting grooves and limiting protrusions are formed on the QE pipe fitting connector from front to back in sequence in the circumferential direction, the QE pipe fitting connector is matched with a PE-Xa pipe for installation, a QE ring is sleeved at the front end of the PE-Xa pipe from front to back, during pipeline installation, expansion flaring is carried out on the PE-Xa pipe and the QE ring by special tools, then the QE pipe fitting connector is inserted into a pipeline after flaring, and the PE-Xa pipe and the QE ring are tightly sleeved on the QE pipe fitting connector after retraction. The utility model has the advantages of realizing self-sealing of valve connection, convenient installation, strong sealing performance and ensuring long-term smooth operation of the ball valve and the connecting pipeline thereof.

Description

Cross-linked pipe type self-sealing connection ball valve

Technical Field

The utility model belongs to the technical field of valve connection, and relates to a ball valve, in particular to a cross-linked pipe type self-sealing connection ball valve.

Background

The PEX crosslinked pipeline is divided into PE-Xa, PE-Xb and PE-Xc according to different crosslinking modes and crosslinking degrees, wherein the PE-Xa pipeline is also called a crosslinked polyethylene PE-Xa pipeline, high-density polyethylene XL-1800 is used as a main material, and chemical covalent bonds are formed among polyethylene molecular chains through crosslinking, so that molecules form a three-dimensional network structure, and the PE-Xa pipeline has excellent high temperature resistance, pressure resistance and other physical and chemical properties. Quick Easy connection using PE-Xa tubing is a tubing connection widely used in Europe and North America.

The ball valve is a valve which is driven by a valve rod to open and close a piece (a ball) and rotates around the axis of the ball valve, and is widely applied to various water systems such as air conditioners, heating, living water supply and the like, and is used for converging, diverging and switching the flow direction of fluid media between regulating and controlling pipelines.

As shown in fig. 1, a conventional ball valve generally includes a ball valve body 100, a threaded joint 110, and a joint nut 120 connecting the two, the joint nut 120 being sleeved outside the junction of the ball valve body 100 and the threaded joint 110. In the prior art, the threaded joint 110 is connected with the water system pipeline by adopting a threaded connection mode, PPR welding, clamping and pressing connection and the like, but as the connection modes are all incomplete connection, the ball valve is easy to produce water seepage and water leakage after long-time use, so that the connecting ball valve with convenient installation and strong sealing performance needs to be designed.

Disclosure of utility model

The utility model aims to solve the problems in the prior art and provides a cross-linked pipe type self-sealing connection ball valve.

The cross-linked pipe type self-sealing connection ball valve comprises a ball valve body, wherein threaded connectors and QE pipe connectors are respectively installed and connected at ports on two sides of the ball valve body through connector threaded sleeves, threaded sleeve installation steps are formed at the joints of the QE pipe connectors and the connector threaded sleeves, and a plurality of limit grooves and limit protrusions are formed on the rear sides of the threaded sleeve installation steps in the circumferential direction of the outer pipe wall of the QE pipe connectors;

The QE pipe fitting joint is matched with the PE-Xa pipe, the QE ring is sleeved at the front end of the PE-Xa pipe from front to back, a special tool is used for expanding and flaring the PE-Xa pipe and the QE ring when the pipeline is installed, the QE pipe fitting joint is inserted into the pipeline after flaring, and the PE-Xa pipe and the QE ring are tightly sleeved on the QE pipe fitting joint after retracting to realize pipeline self-sealing.

In the cross-linked pipe type self-sealing connection ball valve, the rear side of the threaded sleeve mounting step is arranged on the outer pipe wall of the QE pipe fitting joint, a primary limiting groove, a primary limiting protrusion, a secondary limiting groove and a secondary limiting protrusion are formed in sequence from front to back in the circumferential direction, and the outer diameters of the primary limiting protrusion and the secondary limiting protrusion are reduced from front to back inwards.

In the cross-linked pipe type self-sealing connection ball valve, the QE ring is integrally formed with a limiting ring extending towards the center at the front end, and the limiting ring is used for limiting and fixing the QE ring when the QE ring is sleeved at the front end of the PE-Xa pipe from front to back.

In the cross-linked pipe type self-sealing connection ball valve, the two side ports of the ball valve body can be replaced according to actual application requirements, and the cross-linked pipe type self-sealing connection ball valve comprises QE pipe fittings which are installed and connected at two ends of the ball valve body.

Compared with the prior art, the cross-linked pipe type self-sealing connection ball valve provided by the utility model has the advantages that the threaded joint is replaced by the QE pipe fitting joint, and the cross-linked pipe type connection is used for replacing the traditional connection modes such as threaded connection, so that the self sealing of the port of the valve body is realized after the ball valve is connected with a pipeline, the installation is convenient and fast, the tightness is strong, the water leakage and seepage risks caused by incomplete connection are avoided, and the long-term smooth operation of the ball valve and the connecting pipeline thereof is ensured.

Drawings

FIG. 1 is a schematic diagram of the cross-linked tubular self-sealing connection ball valve;

FIG. 2 is a cross-sectional view of the cross-linked tubular self-sealing connection ball valve;

FIG. 3 is an enlarged view of the structure of FIG. 2 at circle A;

Fig. 4 is a schematic structural view of a QE fitting joint in the present cross-linked tubular self-sealing connection ball valve.

In the above figures, 100 parts of ball valve body, 110 parts of threaded joint, 120 parts of joint screw sleeve, 130 parts of QE pipe fitting joint, 131 parts of screw sleeve mounting step, 132 parts of first-stage limit groove, 133 parts of first-stage limit bulge, 134 parts of second-stage limit groove, 135 parts of second-stage limit bulge, 210 parts of PE-Xa pipe, 220 parts of QE ring, 221 parts of limit ring.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

As shown in fig. 1 to 4, the cross-linked pipe type self-sealing connection ball valve comprises a ball valve body 100, wherein two side ports of the ball valve body 100 are connected with connectors through connector threaded sleeves 120, and the connectors are connected with a water system pipeline. Under the prior art, the joint is connected with the pipeline by adopting the connection modes such as threaded connection, PPR welding, clamping connection and the like, is not completely connected, and is easy to produce the phenomenon of water seepage and water leakage after long-time use.

Quick Easy connection is a pipeline connection mode widely applied to europe and north america, and the PE-Xa pipe 210 and the QE pipe are matched to realize the close connection of all pipelines. The PE-Xa pipe 210 has better flexibility and smaller bending radius than other pipes, can keep stable performance in severe environments with high and low temperatures, can prevent the pipe from being friable due to the low temperature environment, has a highest running temperature of 110 ℃, has unique thermal memory performance, and can enable the pipe to be quickly restored after being heated by hot air at high temperature under the condition of bending. The PE-Xa pipe 210 has smooth inner wall, has better anti-scaling performance compared with a metal pipeline, and can ensure long-term smooth running of the pipeline.

The Quick Easy connection mode is applied to the connection between the ball valve and the pipeline. The joint types can be replaced according to practical application requirements at the ports on two sides of the ball valve body 100, and the joint types comprise that the threaded joint 110 and the QE pipe joint 130 are respectively installed and connected at two ends of the ball valve body 100 through the joint threaded sleeve 120, the QE pipe joint 130 is respectively installed and connected at two ends of the ball valve body 100, and the like.

As shown in fig. 2 to 4, the QE tube joint 130 applied to the ball valve is formed with a screw sleeve mounting step 131 at the joint with the joint screw sleeve 120, when the QE tube joint 130 is mounted, the joint screw sleeve 120 is sleeved outside the joint between the QE tube joint 130 and the port of the ball valve body 100 from back to front, the front end of the joint screw sleeve 120 is connected with the ball valve body 100 through threads, and the rear end is clamped with the screw sleeve mounting step 131 in a matching manner, so that the QE tube joint 130 is fixed at the port of the ball valve body 100.

The rear side of the swivel nut mounting step 131 is circumferentially formed with a primary limiting groove 132, a primary limiting protrusion 133, a secondary limiting groove 134 and a secondary limiting protrusion 135 on the outer tube wall of the QE tube fitting 130 from front to back in sequence, wherein the outer diameters of the primary limiting protrusion 133 and the secondary limiting protrusion 135 are slightly reduced from front to back inwards, and the cross section is trapezoidal. The QE pipe fitting joint 130 is matched with the PE-Xa pipe 210, a plurality of limit grooves and limit protrusions are arranged on the QE pipe fitting joint 130 at intervals, so that the PE-Xa pipe 210 can be tightly attached to the rugged outer surface of the QE pipe fitting joint 130 after the installation is retracted, the effects of complete connection and self-sealing are achieved, the front large and rear small trapezoid cross section can effectively prevent the PE-Xa pipe 210 from being sheathed on the QE pipe fitting joint 130 and then sliding backwards and loosening, and the connection tightness and stability are ensured.

The front end of the PE-Xa pipe 210 is sleeved with a QE ring 220, the QE ring 220 is integrally formed with a limiting ring 221 extending towards the center at the front end, and the limiting ring 221 limits and fixes the QE ring 220 when the front end of the PE-Xa pipe 210 is sleeved with the QE ring 220 from front to back.

The working principle of the utility model in installation is that the QE ring 220 is sleeved into the port of the PE-Xa pipe 210 from front to back, then the combined PE-Xa pipe 210 and the QE ring 220 are expanded and flared by a special tool, and the QE pipe fitting joint 130 is inserted into the flared PE-Xa pipe 210. Because of the inherent material properties of the PE-Xa tube 210 and the QE ring 220, the two can generate strong shrinkage force when being retracted after being expanded, after a few seconds, the PE-Xa tube 210 and the QE ring 220 can be tightly sleeved on the QE tube joint 130, and the joint is as firm as a pipeline after 6 hours. The self-sealing connection of the ball valve is realized, the installation is convenient and fast, the sealing performance is strong, the water leakage and seepage risks caused by incomplete connection are avoided, and the long-term smooth operation of the ball valve and the connecting pipeline thereof is ensured.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Although various terms are used more herein, the use of other terms is not precluded. These terms are only used to more conveniently describe and explain the nature of the utility model and should be construed in a manner consistent with their spirit and scope.

Claims (4)

1. The cross-linked pipe type self-sealing connection ball valve comprises a ball valve body (100), and is characterized in that threaded connectors (110) and QE pipe connectors (130) are respectively installed and connected at ports on two sides of the ball valve body (100) through connector threaded sleeves (120), a threaded sleeve installation step (131) is formed at the joint of the QE pipe connectors (130) and the connector threaded sleeves (120), and a plurality of limit grooves and limit protrusions are formed on the rear side of the threaded sleeve installation step (131) on the outer pipe wall of the QE pipe connectors (130) in the circumferential direction;

The QE pipe fitting joint (130) is matched with the PE-Xa pipe (210), the QE ring (220) is sleeved at the front end of the PE-Xa pipe (210) from front to back, a special tool is used for expanding and flaring the PE-Xa pipe (210) and the QE ring (220) when the pipeline is installed, the QE pipe fitting joint (130) is inserted into the pipeline after flaring, and the PE-Xa pipe (210) and the QE ring (220) are tightly sleeved on the QE pipe fitting joint (130) after retracting to realize pipeline self-sealing.

2. The cross-linked pipe type self-sealing connection ball valve according to claim 1, wherein a primary limit groove (132), a primary limit protrusion (133), a secondary limit groove (134) and a secondary limit protrusion (135) are circumferentially formed on the outer pipe wall of the QE pipe fitting joint (130) from front to back in sequence at the rear side of the screw sleeve mounting step (131), and the outer diameters of the primary limit protrusion (133) and the secondary limit protrusion (135) are reduced inwards from front to back.

3. The cross-linked pipe type self-sealing connection ball valve according to claim 1, wherein the QE ring (220) is integrally formed with a limiting ring (221) extending towards the center at the front end, and the limiting ring (221) limits and fixes the QE ring (220) when the QE ring is sleeved at the front end of the PE-Xa pipe (210) from front to back.

4. The cross-linked pipe type self-sealing connection ball valve according to claim 1, wherein the joint types of the two side ports of the ball valve body (100) can be changed according to actual application requirements, and the cross-linked pipe type self-sealing connection ball valve comprises QE pipe fittings (130) installed and connected at two ends of the ball valve body (100).