TWI629425B - Adjustable pressure valve - Google Patents

Abstract

A pressure regulating valve includes a valve body, a passive cover and an active cover; the passive cover is disposed at an exhaust port of the valve body and abuts against a piston in the valve body and has a slanted edge. The active cover is rotatably abutted against the passive cover and has another inclined edge that abuts against the inclined edge of the passive cover; when the active cover is rotated relative to the passive cover, the active cover is The inclined edge pushes the passive cover and slides it inward or outward; then, the sliding of the active cover can compress the elastic member of the valve body more or less to adjust the preset exhaust pressure, and It is not necessary to reassemble the pressure regulator.

Description

Pressure regulating valve

The present invention relates to a pressure valve, and more particularly to a pressure regulating valve.

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 prior art pressure regulating valve includes an actively disposed inlet port and A piston between the air outlets to selectively block airflow from the high pressure air source to the downstream device, a spring disposed about the piston to urge the piston to move toward the exhaust port. When the exhaust pressure is set to a preset pressure, the spring force of the spring is offset by the exhaust pressure, and the piston is pushed to seal the air inlet to prevent gas from flowing through the pressure valve; The pressure begins to decrease, which is insufficient to offset the spring force of the spring, causing the piston to be pushed away from the air inlet, allowing the gas to flow through the prior art pressure regulator.

The prior art pressure valve utilizes different springs to preset the required exhaust pressure, the plurality of springs having tolerances such that the predetermined exhaust pressure is inconsistent with the required exhaust pressure. In order to reduce this difference, the manufacturer must change the spring, but since the preset exhaust pressure can only be measured after the prior art valve valve is assembled, when the preset exhaust pressure does not match the required row When the port side pressure is applied, the manufacturer must reassemble the pressure valve. Therefore, the process of the prior art pressure valve will be more complicated.

To overcome these deficiencies, the present invention provides 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 regulating valve having a preset exhaust pressure that is adjustable without having to be reassembled. The pressure regulating valve comprises a valve body, a passive cover and an active cover; the passive cover is disposed in the exhaust port of the valve body and abuts against the piston in the valve body and has a slanted edge. The active cover is rotatably abutted against the passive cover and has another inclined edge that abuts against the inclined edge of the passive cover; when the active cover is rotated relative to the passive cover, the inclined edge of the active cover The passive cover is pushed and slid inward or outward; then, the sliding of the active cover can compress the elastic member of the valve body more or less to adjust the preset exhaust pressure without reassembling The pressure regulating valve.

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

10‧‧‧ valve body

100‧‧‧ Shell

11‧‧‧Exhaust port

12‧‧‧Piston

13‧‧‧Flexible parts

20, 20A, 20B‧‧‧ Passive cover

21, 21A, 21B‧‧‧ sloping sides

211‧‧‧ teeth

211A‧‧‧

30‧‧‧Active cover

31, 31A, 31B‧‧‧ sloping sides

311‧‧‧ teeth

311A‧‧‧

32‧‧‧ Notch

40‧‧‧ indicator

Paragraphs 401, 402, 403‧‧

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

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

Figure 3: A side cross-sectional view of a portion of the pressure regulating valve of Figure 1.

Figure 4: A side view of the pressure regulating valve of Figure 1.

Figure 5 is a side elevational view of another embodiment of a pressure regulating valve of the present invention.

Figure 6 is a side elevational view of yet another embodiment of a pressure regulating valve of the present invention.

Figure 7 is a perspective view of an active cover of the pressure regulating valve of Figure 1.

Figure 8 is a perspective view of the actuation of the pressure regulating valve of Figure 1.

Figure 9 is a side elevational view of a portion of the pressure regulating valve of Figure 1.

Referring to FIG. 1 and FIG. 2, a pressure regulating valve of the present invention comprises a valve body 10, a passive cover 20, an active cover 30 and an indicator 40.

Referring to FIG. 1 to FIG. 3, the valve body 10 can selectively block the flow of gas through the valve body 10, and includes a housing 100 having an exhaust port 11, a piston 12 and an elastic member 13; 12 is rotatably disposed in the outer casing 100 adjacent to the exhaust port 11, and the elastic member 13 is disposed in the outer casing 100 and compressed between the piston 12 and the inner wall of the outer casing 100.

Referring to FIGS. 2 to 4 , the passive cover 20 rotatably penetrates the exhaust port 11 of the valve body 10 to abut the piston 12 and avoid rotation relative to the valve body 10 . In one embodiment, the passive cover 20 has at least one tab 201 formed on the inner wall of the passive cover 20 to be retained in the corresponding recess to limit rotation of the passive cover 20 relative to the valve body 10. The passive cover 20 has an outer end and a sloped edge 21 formed at an outer end of the passive cover 20. As shown in an embodiment of FIG. 4, a plurality of teeth 211 are formed on the inclined side 21 of the passive cover 20. In another embodiment, as shown in FIG. 5, the plurality of steps 211A are formed on the slope of the passive cover 20A. On the side 21A; and in an embodiment as shown in FIG. 6, the inclined side 21B of the passive cover 20B is smooth.

Referring to FIGS. 2 and 7, the active cover 30 is rotatably abutted against the passive cover 20 and is prevented from being separated from the passive cover 20. The active cover 30 includes a side wall, an inner end, an inclined side 31 and a notch 32. The inner end of the active cover 30 faces the outer end of the passive cover 20; the inclined edge of the active cover 30 is formed therein. The inner end of the active cover 30 abuts against the inclined side 21 of the passive cover 20; the recess 32 passes through the side wall and is formed in the inner end of the active cover 30. In an embodiment shown in FIG. 4, a plurality of teeth 311 are formed on the inclined side 31 of the active cover 30 and mesh with the tooth portion 211 of the passive cover 20 to be between the active cover 30 and the passive cover 20. The adjustment is segmented; in still another embodiment shown in FIG. 5, a plurality of stages 311A are formed on the inclined side 31A of the active cover 30A and engaged with the inclined side 211A of the passive cover 20A, so that the active cover 30 is engaged. The adjustment with the passive cover 20 is segmented; another implementation shown in Figure 6 For example, the inclined side 31B of the active cover 30B is smooth, so that there is no segment adjustment between the active cover 30 and the passive cover 20.

Referring to FIGS. 2 and 3, the indicator 40 is rotatably disposed on the active cover 30 and is prevented from being separated from the active cover 30. The indicator 40 has a side wall divided by a plurality of sections 401, 402, 403; the plurality of sections 401, 402, 403 of the side wall of the indicator 40 can selectively correspond to the recess 32 and have different indicia to distinguish each other Therefore, when one of the plurality of segments 401, 402, 403 corresponds to the notch 32, the corresponding notches 32 of 401, 402, and 403 can be easily recognized by paying attention to different indications; wherein different indications can be Different colors; in another embodiment, different labels may be different characters or symbols.

Referring to FIG. 1, FIG. 3, FIG. 8 and FIG. 9, when a predetermined exhaust pressure does not match a desired exhaust pressure, the active cover 30 can be rotated to adjust the preset exhaust pressure. When the active cover 30 is rotated relative to the passive cover 20, since the passive cover 20 is prevented from rotating relative to the valve body 10, the inclined edge 31 of the active cover 30 moves along the inclined side 21 of the passive cover 20; When the inclined edge 31 of the active cover 30 moves along the inclined side 21 of the passive cover 20, the active cover 30 will push the passive cover 20 to slide inward or outward to the exhaust port 11 of the valve body 10.

When the passive cover 20 is slid inwardly to the exhaust port 11 of the valve body 10, the passive cover 20 pushes the piston 12, causing the elastic member 31 to be compressed more. According to Hooke's law, the more the elastic member 13 is compressed, the greater the force of the elastic member 13. Since the force of the elastic member 13 is larger, a larger exhaust pressure is required to appropriately offset the force of the elastic member 13; therefore, the preset exhaust pressure can be increased to match the required exhaust pressure.

When the passive cover 20 is slid outward to the exhaust port 11 of the valve body 10, the elastic member 13 pushes the piston 12; at this time, the elastic member 13 is compressed less. According to Hooke's law, the less the elastic member 13 is compressed, the smaller the force of the elastic member 13. Because the force of the elastic member 13 is smaller, it needs to be smaller. The exhaust pressure is appropriate to counteract the force of the resilient member 13; therefore, the predetermined exhaust pressure can be reduced to match the required exhaust pressure.

In addition, the space between the recess 32 of the active cover 30 and the outer end of the passive cover 20 may change as the passive cover 20 slides inward or outward to the exhaust port 11 of the valve body 10; The segment corresponding to the plurality of segments 401, 402, 403, corresponding to the notch 32, will be exposed through the space and will change to indicate the pressure adjustment result.

The front pressure valve has a plurality of advantages as described later. As the inclined edge 21 of the passive cover 20 abuts against the inclined side 31 of the active cover 30, the passive cover 20 is pushed inward or toward the direction when the active cover 30 rotates. Sliding to the valve body 10; the sliding of the passive cover 20 causes a compression difference of the elastic member to adjust the preset exhaust pressure of the valve body 10. Therefore, the preset exhaust pressure of the pressure valve can be adjusted as needed, and there is no need to re-assemble the pressure valve before assembly. Moreover, the adjustment result between the passive cover 20 and the active cover 30 can be easily identified by the indication of the plurality of segments 401, 402, 403 on the indicator 40.

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 (7)

A pressure regulating valve comprising: a valve body comprising: a casing having an exhaust port; a piston rotatably disposed in the casing adjacent to the exhaust port; and an elastic member In the outer casing, and compressed between the piston and the inner wall of the outer casing; a passive cover rotatably passing through the exhaust port of the valve body and resisting the piston to avoid relative to the valve The body rotates and includes: an outer end; and a slanted edge formed on the outer end of the passive cover; and an active cover rotatably resisting the passive cover and avoiding separation from the passive cover And comprising: a side wall; an inner end facing the outer end of the passive cover; a sloped edge formed on the inner end of the active cover and abutting against the inclined edge of the passive cover. The pressure regulating valve of claim 1, wherein: the plurality of teeth are formed on the inclined side of the passive cover; and the plurality of teeth are formed on the inclined side of the active cover, and the teeth of the passive cover Engage. The pressure regulating valve according to claim 1, wherein: the plurality of steps are formed on the inclined side of the passive cover; and the plurality of steps are formed on the inclined side of the active cover, and the step of the passive cover Engage. The pressure regulating valve according to claim 1, wherein: the inclined edge of the passive cover is smooth; and the inclined edge of the active cover is smooth. The pressure regulating valve according to any one of claims 1 to 4, further comprising an indicator, wherein: the active cover has a recess penetrating the side wall and formed within the active cover And the indicator is rotatably disposed in the active cover and avoids separation from the active cover, and includes an inner wall divided by a plurality of segments; wherein the plurality of segments of the inner wall of the indicator are selectively Corresponding to the notches, and have different indications. The pressure regulating valve of claim 5, wherein the different markings are of different colors. The pressure regulating valve of claim 5, wherein the different indication has a different letter or symbol.