CN206093036U - Plastic tubing connection structure of ball valve - Google Patents

Abstract

The utility model relates to a plastic tubing connection structure of ball valve, including plastic tubing, connecting pipe and clamp, it is protruding that the outside of connecting pipe free end is equipped with the connecting pipe annular, and the outside of plastic tubing tip is equipped with the annular arch of plastic tubing, and the bellied external diameter of connecting pipe annular is the same with the bellied external diameter of plastic tubing annular, and the annular bellied outer end face contaction of connecting pipe bellied outer terminal surface of annular and plastic tubing, clamp include the clamp recess that is formed by the both sides flange, and the clamp recess matches with connecting pipe annular arch, the annular arch of plastic tubing of contact. Connecting pipe annular is protruding, the plastic tubing in annular bellied end face obliquely set up, the inner wall of flange has and is connected pipe ring, the annular bellied interior terminal surface matched with inclination of plastic tubing. The utility model discloses a cooperation of annular arch and clamp realizes that not only connect convenient and fast, joint support intensity is big, and the size that does not have the design ball valve metalwork of nut moreover need not too greatly, with low costs, and satisfies the great pipe diameter requirement of plastic tubing.

Description

A plastic pipe connection structure of a ball valve

technical field

The utility model relates to a ball valve connection structure, in particular to a plastic pipe connection mechanism of a ball valve, which belongs to the technical field of pipe ball valve connection.

Background technique

Metal pipes have high strength and are easy to connect and are widely used in water, oil and other pipelines, but metal pipes are expensive and easy to rust and corrode during use; With the advantages of tensile strength, compressive strength, environmental protection, and small fluid resistance, the liquid transportation pipeline system not only has plastic pipes but also has control valves, such as ball valves. And the nut that is connected with the connecting pipe through the thread, the valve body and the nut are metal parts, the existing ball valve is connected with the plastic pipe by unscrewing the nut, the plastic pipe passes through the nut, and the end of the plastic pipe is turned outwards The edge fits with the end face of the nut, and then the nut is threadedly connected with the connecting pipe. In this connection method, the plastic pipe needs to be provided with an outer flange. In order to ensure the support strength of the outer flange, the outer diameter of the outer flange is usually smaller than that of the plastic pipe. The inner diameter is much larger, and the outer flange with a larger outer diameter will cause the inner diameter of the nut to be larger, and the outer diameter of the connecting pipe that matches the nut will increase. This connection method not only increases the cost of the ball valve, but is often more expensive. Large ball valves are connected to plastic pipes with small inner diameters, which limits the flow rate and flow efficiency of the liquid in the liquid delivery system.

Utility model content

The utility model aims at the deficiencies of the prior art, and provides a plastic pipe connection structure of a ball valve with simple structure, convenient connection, low cost and ensuring the connection strength between the plastic pipe and the ball valve.

The technical scheme of the utility model for solving the above-mentioned technical problems is as follows: a plastic pipe connection structure of a ball valve, including a plastic pipe, a connecting pipe arranged at the end of the valve body, and a clamp for connecting the plastic pipe and the connecting pipe, the connection The outer side of the free end of the pipe is provided with a connecting pipe annular protrusion, and the outer side of the end of the plastic pipe is provided with a plastic pipe annular protrusion, and the outer diameter of the connecting pipe annular protrusion is the same as that of the plastic pipe annular protrusion , the outer end surface of the annular protrusion of the connecting pipe is in contact with the outer end surface of the annular protrusion of the plastic pipe, the clamp includes a clamp groove formed by ribs on both sides, and the clamp groove is in contact with the The annular protrusion of the connecting pipe and the annular protrusion of the plastic pipe are matched.

The beneficial effect of the utility model is that the connection between the ball valve and the plastic pipe is realized by the cooperation of the annular protrusion and the hoop, not only the connection is convenient and quick, but the connection support strength is high, and the size of the metal parts of the ball valve without the design of the nut does not need to be too large. The cost is low, and the pipe diameter requirement of the plastic pipe is satisfied.

On the basis of the above technical solutions, the utility model can also be improved as follows.

Further, a gasket is provided between the connecting pipe and the plastic pipe.

The beneficial effect of adopting the above further solution is to enhance the sealing performance of the connection between the connecting pipe and the plastic pipe.

Further, the sealing gasket is arranged in an end surface groove, and the end surface groove is arranged on the outer end surface of the annular protrusion of the connecting pipe and or the outer end surface of the annular protrusion of the plastic pipe.

The beneficial effect of adopting the above further solution is that the gasket is easy to install, the gasket can be positioned, and the situation of poor sealing caused by movement of the gasket can be avoided.

Further, the inner end surfaces of the annular protrusions of the connecting pipe and the annular protrusions of the plastic pipe are inclined, and the inner wall of the rib has an inclined angle.

The beneficial effect of adopting the above further solution is that the positioning of the clamp is fast, convenient and accurate, which facilitates the installation of the clamp and ensures the tightness of the plastic pipe and the ball valve.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment 1;

Fig. 2 is the structural representation of the clamp of the present utility model;

Fig. 3 is the structural representation of the utility model embodiment 2;

In the figure, 1. Valve body; 2. Connecting pipe; 3. Plastic pipe; 4. Annular protrusion of connecting pipe; 5. Annular protrusion of plastic pipe; 6. Clamp; ; 9, gasket; 10, end face groove.

detailed description

The principles and features of the present utility model are described below in conjunction with examples, which are only used to explain the utility model, and are not used to limit the scope of the utility model.

Embodiment 1, as shown in Figure 1 and Figure 2, a plastic pipe connection structure of a ball valve, including a plastic pipe 3, a connecting pipe 2 arranged at the end of the valve body 1, and a clamp for connecting the plastic pipe and the connecting pipe 6. The outer side of the free end of the connecting pipe is provided with a connecting pipe annular protrusion 4, and the outer side of the end of the plastic pipe is provided with a plastic pipe annular protrusion 5, and the outer diameter of the connecting pipe annular protrusion is the same as that of the plastic pipe The outer diameters of the annular protrusions are the same, the outer end surface of the annular protrusion of the connecting pipe is in contact with the outer end surface of the annular protrusion of the plastic pipe, and the clamp 6 includes a clamp groove 8 formed by ribs 7 on both sides , the clamp groove is matched with the contacting annular protrusion of the connecting pipe and the annular protrusion of the plastic pipe.

A gasket 9 is provided between the connecting pipe and the plastic pipe. Enhance the tightness of the connection between the connecting pipe and the plastic pipe.

Embodiment 2, as shown in Figure 3, the inner end surfaces of the annular protrusions of the connecting pipe and the annular protrusions of the plastic pipe are arranged obliquely, and the inner wall of the rib has a The inclination angle of the inner end face matching. The positioning of the clamp is fast, convenient and accurate, which facilitates the installation of the clamp and ensures the tightness of the plastic pipe and the ball valve.

The sealing gasket is arranged in the end surface groove 10, and the end surface groove is arranged on the outer end surface of the annular protrusion of the connecting pipe and or the outer end surface of the annular protrusion of the plastic pipe. The gasket is easy to install, and the gasket is positioned to prevent the gasket from moving and sealing poorly.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (4)

1. A plastic pipe connection structure of a ball valve, characterized in that it comprises a plastic pipe, a connecting pipe arranged at the end of the valve body and a hoop for connecting the plastic pipe and the connecting pipe, the free end of the connecting pipe is provided with a An annular protrusion of the connecting pipe, the outer side of the end of the plastic pipe is provided with an annular protrusion of the plastic pipe, the outer diameter of the annular protrusion of the connecting pipe is the same as that of the annular protrusion of the plastic pipe, and the annular protrusion of the connecting pipe is The outer end surface of the protrusion is in contact with the outer end surface of the annular protrusion of the plastic pipe, and the clamp includes a clamp groove formed by ribs on both sides, and the clamp groove is in contact with the annular protrusion of the connecting pipe. match with the ring-shaped protrusion of the plastic pipe. 2. The plastic pipe connection structure of the ball valve according to claim 1, wherein a sealing gasket is provided between the connection pipe and the plastic pipe. 3. The plastic pipe connection structure of the ball valve according to claim 2, wherein the sealing gasket is arranged in the end face groove, and the end face groove is arranged on the outer end face of the annular protrusion of the connecting pipe and or The outer end surface of the annular protrusion of the plastic pipe. 4. The plastic pipe connection structure of the ball valve according to claim 1, characterized in that, the inner end faces of the annular protrusion of the connecting pipe and the annular protrusion of the plastic pipe are arranged obliquely, and the inner wall of the rib has a The inclination angle of the pipe annular protrusion and the inner end surface of the plastic pipe annular protrusion.