CN202867959U - Tank container external safe relief valve - Google Patents

Abstract

The utility model provides a tank container external safe relief valve. The tank container outlaid safe relief valve comprises a valve body, wherein a valve cover is fixedly connected on the valve body, a lower end port of the valve body is provided with British standard pipe (BSP) threads, a valve clack is arranged on a cavity of the valve body, springs are arranged between the valve clack and the valve cover, the springs are a spring set, the lower end face of the valve clack is provided with an omega-shaped annular groove, and an O-shaped ring is embedded inside the omega-shaped annular groove in a coating mode. Due to the fact that the spring set is adopted, the tank container external safe relief valve is compact in structure, small in installing space, capable of effectively enlarging filling volume of a container within the rang that standardization volume of the container is guaranteed, capable of improving transportation efficiency, and saving in cost. Furthermore, the omega-shaped annular groove is arranged on the lower end face of the valve clack, and the O-shaped ring is embedded inside the omega-shaped annular groove so that the O-shaped ring is not prone to drop, and therefore the tank container external safe relief valve is good in sealing performance and prolongs service life.

Description

Tank container external safety relief valve

Technical field

The utility model relates to a kind of Decompression valves, particularly relates to a kind of tank container external safety relief valve.

Background technique

Existing tank container external safety relief valve, it is large that valve inner arranges single spring fitting space, can only guarantee tank case demarcation volume by the volume that fills that reduces the tank case, thereby uneconomical; And the flap lower end surface arranges the circular groove of U-shaped, and the O type circle in the circular groove of U-shaped easily comes off, and affects the working life of product and transporting safely of movable tank case.

The model utility content

In order to overcome existing tank container with the above-mentioned shortcoming of Decompression valves, the utility model provides that a kind of compact structure, installing space are little, the tank container external safety relief valve of good seal performance.

The technological scheme that its technical problem that solves the utility model adopts is that tank container external safety relief valve comprises valve body, the valve body top is fixedly connected with valve gap, the valve body lower end mouth is provided with the BSP screw thread, body cavity is provided with flap, be provided with spring between flap and the valve gap, spring is cluster spring, and the flap lower end surface has Ω shape circular groove, and Ω shape circular groove is embedded with and coats O type circle.

Cluster spring is comprised of inner spring and outer spring.

Coating O type loop material is the rubber elastomer by the FEP polymer overmold.

The beneficial effects of the utility model are as follows:

The utility model adopts the cluster spring structure, compact structure, and installing space is little, in the scope that guarantees tank case demarcation volume, can effectively increase the volume that fills of tank case, improves conveying efficiency, saves cost; And Ω shape circular groove is set in the flap lower end surface, and Ω shape circular groove is embedded in O type circle, so that O type circle difficult drop-off, good seal performance has prolonged working life.

Description of drawings

Fig. 1 is the plan view of the present embodiment, is sectional view;

Fig. 2 is the plan view of Fig. 1 medi-spring group 3, is sectional view;

Among Fig. 1,2: 1. valve gap; 2. valve body; 3. cluster spring; 4. flap; 5. Ω shape circular groove; 6. coat O type circle; 7. BSP screw thread; 8. outer spring; 9. inner spring.

Embodiment

As shown in Figure 1, 2, tank container external safety relief valve comprises valve body 2, valve body 2 tops are fixedly connected with valve gap 1, and valve body 2 lower end mouth are provided with BSP screw thread 7, and valve body 2 inner chambers are provided with flap 4, be provided with spring between flap 4 and the valve gap 1, spring is cluster spring 3, and cluster spring 3 is comprised of inner spring 9 and outer spring 8 stacks, and flap 4 lower end surfaces have Ω shape circular groove 5, Ω shape circular groove 5 is embedded with and coats O type circle 6, coats O type circle 6 rubber elastomers by the FEP polymer overmold and forms.

During work, when tank container external safety relief valve is fixedly connected with tank body by BSP screw thread 7, when tank body pressure during greater than setting pressure, flap 4 take-offs realize pressure release, when tank body pressure during less than setting pressure, flap 4 under the effect of cluster spring 3, the auto back seat.

Claims (3)

1. tank container external safety relief valve comprises valve body, the valve body top is fixedly connected with valve gap, the valve body lower end mouth is provided with the BSP screw thread, body cavity is provided with flap, be provided with spring between flap and the valve gap, it is characterized in that: described spring is cluster spring, and described flap lower end surface has Ω shape circular groove, and Ω shape circular groove is embedded with and coats O type circle.

2. described tank container external safety relief valve according to claim 1, it is characterized in that: described cluster spring is comprised of inner spring and outer spring.

3. described tank container external safety relief valve according to claim 1, it is characterized in that: described coating O type loop material is the rubber elastomer by the FEP polymer overmold.

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