Five-way ball valve with good sealing effect

Abstract

The utility model belongs to valve technical field relates to a five -way ball valve with good sealing effect, including valve body, the inlet and the outlet of valve body all are equipped with the connecting pipe, the peripheral surface of connecting pipe is equipped with flange near the pipe orifice, the nut for connecting the pipe fitting is covered on the connecting pipe, the connecting pipe is covered with the sealing ring of cross section is L type, the outer periphery of small diameter section of sealing ring is equipped with the sealing lip towards its major diameter end, the two end faces of major diameter end of sealing ring are equipped with a plurality of concentric lines, the inner wall of sealing ring is equipped with annular limit slot, the outer periphery of connecting pipe is equipped with the limit block of clamping in limit slot. Through L type sealing ring can realize pipe fitting end surface and peripheral surface double seal, ensure the sealing effect of valve, the limit slot and the limit block cooperate with each other, can prevent sealing ring from being extruded.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a five-way ball valve with good sealing effect. Background Technology

[0002] A five-way ball valve is a special ball valve with five connection ports (channels). It achieves fluid flow control, shut-off, and flow direction switching between different channels by rotating the ball valve core, and is widely used in industrial production and fluid control. To ensure the sealing performance of valves and fittings, a circular sealing ring or Teflon tape is usually installed. However, because the sealing ring has a certain degree of elasticity, it is easily squeezed out during use, thus reducing the sealing effect. Teflon tape wrapping is not only cumbersome and increases installation steps, but also prone to leakage if the number of wraps is insufficient. Therefore, this invention proposes a five-way ball valve with better sealing performance. Utility Model Content

[0003] The main objective of this invention is to provide a five-way ball valve with good sealing performance, so as to solve the problem of poor sealing performance between the ball valve and the pipe fitting caused by a sealing ring or wrapping with PTFE tape in the above-mentioned background art.

[0004] This utility model achieves the above-mentioned objective through the following technical solution: a five-way ball valve with good sealing effect, including a valve body, a connecting pipe provided at both the inlet and outlet of the valve body, a flange provided on the circumference of the connecting pipe near the pipe opening, a nut for connecting pipe fittings fitted on the connecting pipe, a sealing ring with an L-shaped cross section fitted on the connecting pipe, a sealing lip provided on the outer circumference of the small diameter section of the sealing ring facing its large diameter end, multiple concentric patterns provided on the two end faces of the large diameter end of the sealing ring, an annular limiting groove provided on the inner wall of the sealing ring, and a limiting block provided on the outer circumference of the connecting pipe that is locked in the limiting groove.

[0005] Preferably, the outer periphery of the small-diameter end of the sealing ring is provided with an annular sealing protrusion, which is located between the sealing lip and the large-diameter end of the sealing ring.

[0006] Preferably, the sealing protrusion has an air cavity, the outer wall of the sealing ring has an air hole, the sealing ring has an air passage connecting the air cavity and the air hole, and the air hole is located between the sealing lip and the protrusion.

[0007] Preferably, the connecting pipe is provided with a sleeve portion, the sealing ring is fitted on the sleeve portion, and the outer diameter of the sleeve portion is smaller than the outer diameter of the connecting pipe.

[0008] The beneficial effects of this utility model are as follows: the pipe fitting to be connected is connected to the nut by threads, the end face of the pipe fitting abuts against the end face of the large diameter end of the sealing ring to seal the end face of the pipe fitting, the end face of the sealing ring is provided with multiple sealing grooves to ensure the sealing effect, the sealing lip and the sealing protrusion abut against the inner circumferential surface of the pipe fitting to seal the inner circumference of the pipe fitting, thereby achieving double sealing, the inner wall of the sealing ring is provided with an annular limiting groove, and the outer circumference of the connecting pipe is provided with a limiting block that is stuck in the limiting groove to prevent the sealing ring from being squeezed out. Attached Figure Description

[0009] Figure 1 This is a diagram showing the arrangement of the five-way ball valve during operation.

[0010] Figure 2 This is a schematic diagram of the sealing ring structure.

[0011] The numbers in the image represent:

[0012] 1. Valve body; 2. Connecting pipe; 3. Flange; 4. Nut; 5. Sealing ring; 6. Sealing lip; 7. Limiting groove; 8. Limiting block; 9. Sealing protrusion; 10. Air chamber; 11. Air hole. Detailed Implementation

[0013] The present invention will be further described in detail below with reference to specific embodiments.

[0014] Example:

[0015] like Figure 1 and Figure 2 As shown, this utility model discloses a five-way ball valve with good sealing effect, including a valve body 1. The valve body 1 is provided with connecting pipes 2 at both the inlet and outlet. The connecting pipe 2 is provided with a flange 3 near the pipe opening on its circumference. The connecting pipe 2 is fitted with a nut 4 for connecting the pipe 2. The connecting pipe 2 is fitted with a sealing ring 5 with an L-shaped cross section. The outer circumference of the small diameter section of the sealing ring 5 is provided with a sealing lip 6 facing its large diameter end. The two end faces of the large diameter end of the sealing ring 5 are provided with multiple concentric patterns. The inner wall of the sealing ring 5 is provided with an annular limiting groove 7. The outer circumference of the connecting pipe 2 is provided with a limiting block 8 that is locked in the limiting groove 7.

[0016] The sealing ring 5 has an annular sealing protrusion 9 on its outer periphery at the small diameter end, and the sealing protrusion 9 is located between the sealing lip 6 and the large diameter end of the sealing ring 5.

[0017] The sealing protrusion 9 has an air cavity 10 inside, and the outer wall of the sealing ring 5 has an air hole 11. The sealing ring 5 has an air passage connecting the air cavity 10 and the air hole 11. The air hole 11 is located between the sealing lip 6 and the protrusion.

[0018] The connecting pipe 2 is provided with a sleeve portion, and the sealing ring 5 is fitted on the sleeve portion. The outer diameter of the sleeve portion is smaller than the outer diameter of the connecting pipe.

[0019] The beneficial effects of this utility model are as follows: The two pipes to be connected are connected to the nut 4 by threads. The end face of the pipe abuts against the end face of the large diameter end of the sealing ring 5 to seal the end face of the pipe. The end face of the sealing ring 5 is provided with multiple sealing grooves to ensure the sealing effect. The sealing lip 6 and the sealing protrusion 9 abut against the inner circumferential surface of the pipe to seal the inner circumference of the pipe. When leakage occurs in the inner circumference of the pipe, the fluid passes through the sealing lip 6 and enters between the sealing lip 6 and the sealing protrusion 9. The fluid enters the air chamber 10 through the air hole 11. The pressure in the air chamber 10 increases, and the inner wall of the cylinder is squeezed and protrudes outward, thereby enhancing the sealing effect between the sealing protrusion 9 and the inner wall of the pipe.

[0020] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A five-way ball valve with good sealing performance, characterized in that: The valve includes a valve body, with connecting pipes at both the inlet and outlet. A flange is provided on the circumference of the connecting pipe near the pipe opening. A nut for connecting pipe fittings is fitted on the connecting pipe. An L-shaped sealing ring is fitted on the connecting pipe. A sealing lip is provided on the outer circumference of the small-diameter section of the sealing ring, facing towards its large-diameter end. Multiple concentric lines are provided on the two end faces of the large-diameter end of the sealing ring. An annular limiting groove is provided on the inner wall of the sealing ring. A limiting block is provided on the outer circumference of the connecting pipe, which is engaged within the limiting groove.

2. The five-way ball valve with good sealing effect according to claim 1, characterized in that: The outer periphery of the small-diameter end of the sealing ring is provided with an annular sealing protrusion, which is located between the sealing lip and the large-diameter end of the sealing ring.

3. A five-way ball valve with good sealing effect according to claim 2, characterized in that: The sealing protrusion has an air cavity, the outer wall of the sealing ring has an air hole, and the sealing ring has an air passage connecting the air cavity and the air hole. The air hole is located between the sealing lip and the protrusion.

4. A five-way ball valve with good sealing effect according to claim 3, characterized in that: The connecting pipe is provided with a sleeve portion, and the sealing ring is fitted on the sleeve portion. The outer diameter of the sleeve portion is smaller than the outer diameter of the connecting pipe.

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