TWI635231B - Pressure valve and pressure releasing assembly for the same - Google Patents

Abstract

A pressure relief assembly includes a hollow outer casing, one end of which has a gap therethrough and a main recess formed therein to communicate with the gap, a slider is slidably disposed in the outer casing, and a gastight member is disposed on the inner wall of the outer casing Between the slider and the slider to ensure that gas does not escape from the space between the slider and the inner wall of the casing; when the slider moves rapidly due to the super-high pressure, the airtight member will follow the The slider moves and is then received in the main recess, and then a space is formed between the wall surface of the main recess and the airtight member, so that the gas is discharged from the gap; thus, the air pressure can be quickly lowered to maintain The component is not damaged.

Description

Pressure valve and pressure relief assembly for the pressure valve

The present invention relates to a pressure relief assembly, and more particularly to a pressure relief assembly for a pressure valve that rapidly discharges superhigh pressure.

Pressure valves are commonly used to reduce an intake pressure to a desired exhaust pressure and are widely used in a wide variety of devices. A piston system is movably disposed between the air inlet and the air outlet to selectively block airflow from the high pressure air source to the downstream device; however, when the prior art pressure valve is subjected to ultra high air pressure, its internal components are Damage caused by pushing the super-high pressure.

To overcome these deficiencies, the present invention provides a pressure relief assembly for a pressure valve to alleviate or eliminate the aforementioned problems.

SUMMARY OF THE INVENTION A primary object of the present invention is to provide a pressure relief assembly for a pressure valve for rapidly expelling superhigh pressure. The pressure relief assembly comprises a hollow outer casing having a gap passing through one end, a primary and secondary recess formed therein, the primary and secondary recesses being separated from each other but communicating with the gap, the secondary recess The length is shorter than the length of the main recess; a slider is slidably disposed in the outer casing; an airtight member is disposed between the inner wall of the outer casing and the slider to ensure that gas does not from the slider and the Excreted in the space between the inner walls of the outer casing; when the slider moves rapidly due to the super-high air pressure, the airtight member moves along the sliding block Moving, and first placed in the main recess, a space is formed between the wall surface of the main recess and the airtight member, so that the gas is discharged from the gap, and if the airtight member continues to move, it will be accommodated at the same time. Placed in the main and secondary recesses, at this time another space is formed between the wall surface of the secondary recess and the airtight member to accelerate the pressure relief; thus, the air pressure can be quickly lowered to keep the components from being damaged. .

Other objects, advantages and novel features of the invention will become apparent from

10‧‧‧ Shell

101‧‧‧ intake end

102‧‧‧Exhaust end

11‧‧‧ gap

12‧‧‧Main notch

13‧‧ ‧ notches

20‧‧‧ valve body

30‧‧‧ Slider

31‧‧‧ concave ring

40‧‧‧ airtight parts

50‧‧‧Flexible parts

Figure 1 is a perspective view of a pressure valve of the present invention.

Figure 2: An exploded perspective view of the pressure valve of Figure 1.

Figure 3: Another perspective exploded view of the pressure valve of Figure 1.

Figure 4: An enlarged cross-sectional view of the pressure valve housing of Figure 1.

5A to 5C are partial enlarged cross-sectional views of the pressure valve of Fig. 1 in operation.

Referring to FIGS. 1 to 3 , a pressure valve having a pressure relief assembly includes a housing 10 , a valve body 20 , a slider 30 , an airtight member 40 , and an elastic member 50 .

Referring to FIG. 1 and FIG. 4, the outer casing 10 is hollow and has an air inlet end 101, an exhaust end 102, an inner wall, a gap 11 and a main recess 12; the gap 11 passes through the outer casing. The exhaust end 102 of the 10, the main recess 12 is formed on the inner wall and communicates with the gap 11. In one embodiment, the gap 11 spans longitudinally across the exhaust end 102, and the outer casing 10 has a primary recess 13 formed on the inner wall of the outer casing, with the main recess 12 Separate but in communication with the gap 11, the secondary recess 13 is opposite the main recess 12 and is short to the main recess 12. In an embodiment, the outer casing 10 includes two halves.

Referring to FIGS. 1 and 2, the valve body 20 is disposed within the outer casing 10 adjacent to the intake end 101 and optionally blocks gas flow through the valve body 20.

Referring to FIGS. 2 and 3, the slider 30 is slidably disposed within the outer casing 10 adjacent to the exhaust end 102. In one embodiment, the slider 30 has a concave ring 31.

The airtight member 40 is disposed between the inner wall of the outer casing 10 and the slider 30, and is coupled to the slider 30 and is selectively housed in the main recess 12. In one embodiment, the airtight member 40 is an O-ring and is disposed in the recessed ring 31 of the slider 30.

The elastic member 50 is disposed in the outer casing 10 and is interposed between the slider 30 and the exhaust end 102 of the outer casing 10. In one embodiment, the slider 30 includes an axial recess for receiving the resilient member 50. In another embodiment, the outer casing 10 includes an inner protrusion, and one end of the elastic member 50 is looped on the inner protrusion to linearly hold the elastic member 50. In still another embodiment, the elastic member is a spring.

Referring to FIG. 5A, the airtight member 40 abuts against the inner wall of the outer casing 10 to block the passage of airflow.

Referring to FIG. 5B, the front pressure valve is subjected to an ultra-high air pressure, so that the slider 30 is pushed and moved quickly, and the airtight member 40 is also moved along the slider 30 until the airtight member 40 is placed. The outer casing 12 of the outer casing 10 is in the interior. When the airtight member 40 is received in the main recess 12 of the outer casing 10, the airtight member 40 no longer abuts against the inner wall of the outer casing 10, and between the wall surface of the main recess 12 and the airtight member 40. A space is formed at which time gas can be discharged from the gap 11 through the main recess 12 of the outer casing 10, so that the air pressure can be rapidly lowered.

Referring to FIG. 5C, the front pressure valve is subjected to an ultra-high pressure, so that the slider 30 is pushed and moved quickly, and the airtight member 40 is also moved along the slider 30 until the airtight member 40 is accommodated in the outer casing. The main recess 12 and the secondary recess 13 of the 10 are as shown. When the airtight member 40 is received in the main recess 12 and the secondary recess 13 of the outer casing 10, the airtight member 40 no longer resists the inner wall of the outer casing 10, and the airtight member 40, the main recess Two spaces are formed between the wall surface of the wall 12 and the wall surface of the secondary recess 13 at which time the gas can pass through the space. The main recess 12 and the secondary recess 13 of the outer casing 10 are drained from the gap 11; since the gas is simultaneously discharged through the main recess 12 and the secondary recess 13, the pressure drop can be accelerated.

When the air pressure of the pressure valve drops to the preset pressure, the elastic member 50 pushes the slider 30 back to the normal position.

The pressure relief assembly formed by the gap 11, the main recess 12, the slider and the airtight member 40 is easily released by the gas being discharged through the main recess 12; Therefore, the front pressure valve is not damaged by the high air pressure.

While the invention has been described in connection with the details The details may be varied, particularly in terms of shape, size and arrangement of the elements under the principles of the invention, insofar as the broad and ordinary meaning of the terms expressed in the scope of the appended claims.

Claims (12)

A pressure relief assembly comprising: a hollow outer casing comprising: an exhaust end; an inner wall; a gap passing through the exhaust end; a main recess formed on the inner wall and a gap communication; and a primary recess formed on the inner wall of the outer casing, separate from the main recess but communicating with the gap; wherein the length of the secondary recess is shorter than the length of the main recess; a slider a sliding member is disposed in the outer casing and adjacent to the exhaust end; a gas-tight member is disposed between the inner wall of the outer casing and the sliding block, and is connected to the sliding block to be selectively received in the main recess And optionally, simultaneously received in the main recess and the recess; and an elastic member disposed in the outer casing and sandwiched between the slider and the exhaust end of the outer casing. The pressure relief assembly of claim 1, wherein the slider comprises a concave ring; and the airtight member is disposed in the groove. The pressure relief assembly of claim 1, wherein the airtight member is an O-ring. The pressure relief assembly of claim 2, wherein the airtight member is an O-ring. The pressure relief assembly of claim 1 wherein the slider includes an axial groove for receiving the resilient member. The pressure relief assembly of claim 1, wherein the outer casing comprises an inner bump; and the one end of the elastic member is disposed on the inner bump. A pressure valve comprising: a hollow outer casing comprising: an intake end; an exhaust end; an inner wall; a gap passing through the exhaust end; a main recess formed on the inner wall and communicating with the gap And a notch formed on the inner wall of the outer casing, separate from the main recess but communicating with the gap; wherein the length of the secondary recess is shorter than the length of the main recess; a valve body Provided in the housing adjacent to the intake end, and optionally blocking airflow through the valve body; a slider is slidably disposed in the housing adjacent to the exhaust end; an airtight member is disposed on the outer casing Between the inner wall and the slider, and connected to the slider, to be selectively received in the main recess, or selectively accommodated in the main recess and the recess; and an elastic member, The utility model is disposed in the outer casing and is interposed between the sliding block and the exhaust end of the outer casing. The pressure valve of claim 7, wherein the slider comprises a concave ring; and the airtight member is disposed in the groove. The pressure valve of claim 7, wherein the airtight member is an O-ring. The pressure valve of claim 8, wherein the airtight member is an O-ring. The pressure valve of claim 7, wherein the slider includes an axial groove for receiving the elastic member. The pressure valve of claim 1, wherein the outer casing comprises an inner bump; and the one end of the elastic member is disposed on the inner bump.