FILTER-INCLUDED ENERGY-SAVING LARGE-CAPACITY DIRECT-ACTING PRECISION PRESSURE REGULATION VALVE

Abstract

A filter-included energy-saving large-capacity direct-acting precision pressure regulation valve includes a main body that is formed of a pressure regulation seat, a pressure regulation filter valve, and a protective cap arranged in sequence from top to bottom. The pressure regulation filter valve includes a main channel through which a primary side pressure and a secondary side pressure may flow. The main channel includes a primary valve port and a secondary valve port arranged therein for controlling and regulating the secondary side pressure and flow in a stage-wise manner. A flowrate straight rod assembly includes a straight rod fit to a pressure plunger ring. A straight rod spherical seat and a straight rod holder are coupled to an upper section of the straight rod and a secondary valve port spring supports a lower section of the straight rod. The pressure plunger ring is supported on a primary valve port the spring.

Claims

1. A filter-included energy-saving large-capacity direct-acting precision pressure regulation valve, comprising: main body, which is formed of a pressure regulation seat, a pressure regulation filter valve, and a protective cap that are connected with each other in sequence from top to bottom, the pressure regulation filter valve being formed therein with a main channel that allows a primary side pressure and a secondary side pressure to be in fluid connection with and in communication with each other, the main channel being provided in an interior thereof with a primary valve port and a secondary valve port arranged in an interior of the primary valve port to provide stage-wise regulation of flow into the secondary side pressure, wherein a flowrate straight rod assembly comprises a straight rod, that receives a pressure plunger ring to fit thereto, a straight rod spherical seat and a straight rod holder being coupled to an upper stage of the straight rod, a lower stage of the straight rod being abutted by and supported on a secondary valve port spring, the pressure plunger ring being provided on an underside thereof with a primary valve port the spring abutting thereon so that the pressure plunger ring is displaceable for opening/closing the primary valve port, the straight rod spherical seat being subjected to application of pressure thereto by a primary diaphragm arranged in the pressure regulation seat so that the main body is operable to first allow a partial flow and a partial pressure to flow through the secondary valve port to thereby achieve pressure setting and precision pressure regulation at the same time, while no consumption of gas at an overflow orifice formed at a lateral side of the pressure regulation seat by discharging gas to a surrounding atmosphere, wherein with an increase of a pressing force applied by the primary diaphragm for regulation purposes, the flowrate straight rod assembly opens the primary valve port to allow an enlarged flow to pass through both the primary valve port and the secondary valve port.

2. The filter-included energy-saving large-capacity direct-acting precision pressure regulation valve according to claim 1, wherein the flowrate straight rod assembly comprises a stage-wise structural arrangement so that the primary valve port and the secondary valve port are openable in a consecutive manner.

3. The filter-included energy-saving large-capacity direct-acting precision pressure regulation valve according to claim 2, wherein the stage-wise structural arrangement of the flowrate straight rod assembly includes at least two stages, wherein a first stage of minimum displacement is carried out for 0.3 to 0.1 millimeters so that a second stage displacement is subsequently carried out as early as possible to provide the enlarged flow output.

4. The filter-included energy-saving large-capacity direct-acting precision pressure regulation valve according to claim 1, wherein the straight rod also comprises a straight rod elastic enclosure that covers a surface of the straight rod and is contactable with a bottom of the straight rod holder to improve sealing of the secondary valve port.

5. The filter-included energy-saving large-capacity direct-acting precision pressure regulation valve according to claim 1, wherein the straight rod spherical seat also comprises a spherical seat elastic enclosure, which covers a surface of the straight rod spherical seat to improve sealing through contact with the primary diaphragm.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0012] FIG. 1 is a cross-sectional view showing a structure of the present invention in a standby condition.

[0013] FIG. 2A is a cross-sectional view, in an exploded form, illustrating a flowrate straight rod of the present invention.

[0014] FIG. 2B is a cross-sectional view, in an assembled form, illustrating the flowrate straight rod of the present invention.

[0015] FIG. 3 is a cross-sectional view illustrating a secondary valve port of the present invention in a working condition.

[0016] FIG. 4 is a cross-sectional view, in an enlarged form, illustrating a portion of the secondary valve port of the present invention in the working condition.

[0017] FIG. 5 is a cross-sectional view illustrating a primary valve port of the present invention in a working condition.

[0018] FIG. 6 is a cross-sectional view, in an enlarged form, illustrating a portion of the primary valve port of the present invention in the working condition.

[0019] FIG. 7 is a schematic view illustrating a structure of prior art.

[0020] FIG. 8 is a schematic view illustrating the structure of the prior art in a working condition.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] The following descriptions are exemplary embodiments only, and are not intended to limit the scope, applicability or configuration of the invention in any way. Rather, the following description provides a convenient illustration for implementing exemplary embodiments of the invention. Various changes to the described embodiments may be made in the function and arrangement of the elements described without departing from the scope of the invention as set forth in the appended claims.

[0022] The present invention can be better understood with a detailed description, as provided below, for illustrating the best feasible embodiment of the present invention, with reference to FIGS. 1 and 2 of the attached drawings.

[0023] The present invention provides a filter-included energy-saving large-capacity direct-acting precision pressure regulation valve, which has a structure that comprises: a main body (10), which is formed of a pressure regulation seat (20), a pressure regulation filter valve (30), and a protective cap (40) that are connected to each other in sequence from top to bottom. The protective cap (40) is provided, in an interior thereof, with a plastic cup (41), and the plastic cup (41) receives a filter core seat (42) to locate therein. The filter core seat (42) is provided thereon with a replaceable filter core (43), and the filter core seat (42) is also provided therein with a bottom board (dip.

[0024] The pressure regulation filter valve (30) is formed therein with a main channel (31) that allows a primary side pressure (P1) and a secondary side pressure (P2) to be in fluid connection with and in communication with each other. The main channel (31) is provided in an interior thereof with a primary valve port (32) and a secondary valve port (33) that is arranged in an interior of the primary valve port (32) so as to provide stage-wise control of a flow moving into the secondary side pressure (P2). The secondary valve port (33) is provided, on an underside thereof, with a secondary valve port spring (346), which provides a spring force to close the secondary valve port (33) and thus, providing the secondary valve port (33) with a spring-based returning function. The secondary valve port spring (346) has a spring constant that is as small as possible in order to provide precision regulation and control of an output pressure.

[0025] Also provided is a flowrate straight rod assembly (34), which is formed of a straight rod (341) that receives a pressure plunger ring (343) to fit thereon. Specifically, after the pressure plunger ring (343) has been so fit, there is a space that allows for a first stage of minimum displacement to carry out. The first stage of displacement is carried out for just around 0.3 to 0.1 millimeters, to allow a second stage of displacement to be subsequently carried out as early as possible in order to provide an enlarged output of flow.

[0026] The straight rod (341) is connected, at a top thereof, to a straight rod spherical seat (342) and is also coupled to a straight rod holder (344); the straight rod (341) is supported, at a bottom thereof, on a secondary valve port spring (346) as being abutted thereby. The pressure plunger ring (343) is provided, on an underside thereof, with a primary valve port the spring (345) abutting thereon so that the pressure plunger ring (343) is elastically biased for displacement to open/close the primary valve port (32). The straight rod spherical seat (342) is subjected to application of pressure thereto by a primary diaphragm (21) and a primary spring (25) arranged in the pressure regulation seat (20) so that the main body (10) may first allow a partial flowrate and partial pressure to flow through the secondary valve port (33), during which time precision pressure regulation can be conducted in respect of a set pressure. And, this can be done in such a manner that an overflow orifice (26) requires on air or gas to be consumed thereby as being discharged to the surrounding atmosphere. With an increase of the pressing force applied by the primary diaphragm (21) as a consequence of the regulation operation, the flowrate straight rod assembly (34) may open the primary valve port (32), so that as simultaneously moving through the primary valve port (32) and the secondary valve port (33), an enlarged flow is provided.

[0027] As shown in FIG. 2, the flowrate straight rod assembly (34) is structured such that the straight rod (341) is covered by a straight rod elastic enclosure (3411), and the straight rod spherical seat (342) is also covered, on a surface thereof, with a spherical seat elastic enclosure (3421). Additional reference being had to FIG. 1, it can be understood that the straight rod elastic enclosure (3411) is provided on a surface that is contactable with a bottom of the straight rod holder (344) for opening/closing the secondary valve port (33). The pressure plunger ring (343) is also provided with a pressure plunger ring elastic enclosure (3431) for opening/closing the primary valve port (32). The spherical seat elastic enclosure (3421) is provided to improve sealing engagement thereof with the primary diaphragm (21) through contacting therebetween for closing or opening to allow the secondary side pressure (P2) in the pressure regulation filter valve (30) to move in and out for adjusting accuracy of regulation of the secondary side pressure (P2). Thus, it can be seen that the flowrate straight rod assembly (34) is formed of a two-staged structural arrangement to better control and regulation of flowing of the secondary side pressure (P2).

[0028] Referring to FIGS. 3 and 4, when the primary side pressure (P1) moves along the main channel (31) by passing through the secondary valve port (33), the flowrate straight rod assembly (34) undergoes only the first stage displacement, where the primary diaphragm (21) is initially pushed downward and flowrate required for operation of the main body (10) does not reach the maximum level. Further referring to FIGS. 5 and 6, when the flowrate straight rod assembly (34) is further pushed downward by the primary diaphragm (21), the pressure plunger ring (343) is also caused by the straight rod (341) to move downward to additionally carry out the second stage displacement, and thus opening the primary valve port (32), where the flowrate can be allowed to move through the main body (10) at the maximum level.

[0029] In the illustration of the drawings of the present invention, it can be seen that an overflow orifice (26) is arranged at a lateral side of the pressure regulation seat (20) and is a normally closed arrangement so that when a flow passes through the main channel (31), no air or gas is consumed through or by the overflow orifice (26). Therefore, the main body (10) could achieve an excellent effect of saving energy. In addition, regarding internal structure, this invention is similar to the prior art, except the flowrate straight rod assembly (34) and the primary and secondary valve ports (32, 33) are of different structures, the other components are almost the same and can be shared between the two, so that direct replacement or substitute can be made to adopt the stage-wise valve port arrangement according to the present invention, in order to improve the flowrate without the need to make any modification or change to the overall size of the main body (10) and thus, cost and time required to fabricate new molds for new manufacturing operations can be saved. In addition, it can be learnt from the above that in opening and closing the primary valve port (32) and the secondary valve port (33), by means of reducing the surface area of the secondary valve port (33) to a minimum area, while keeping the surface area of the primary valve port (32) the same, under the condition that the accuracy of pressure regulation is generally commeasurable to the condition of flow and pressure required by the prior art structure, this invention could reduce loss to an even lower level, while capable of achieving accurate and precise pressure regulation.

[0030] In summary, the present invention provides a filter-included energy-saving large-capacity direct-acting precision pressure regulation valve, which provides a flowrate straight rod assembly (34) that involves a structural arrangement for opening/closing a primary valve port (32) and a secondary valve port (33) in a two-stage manner to respectively suit the needs for regular flowrate and large flowrate, whereby besides an increase can be made on an overall flow passing therethrough, a response speed of the device can also be enhanced, and in addition, pressure differential between a primary side pressure (P1) and a secondary side pressure (P2) can be reduced to allow a user to conduct control in a effort-saving and easy manner, so that an effect of precision regulation of pressure can be achieved and application to a valve port of an increased size can be done by changing the two-stage structure of the valve port to a more-stage structure. This could overcome the drawback of the prior art that an increase of capacity requires a corresponding increase of the parts, and also makes control and use easier.

[0031] While certain novel features of this invention have been shown and described and are pointed out in the annexed claim, it is not intended to be limited to the details above, since it will be understood that various omissions, modifications, substitutions and changes in the forms and details of the device illustrated and in its operation can be made by those skilled in the art without departing in any way from the claims of the present invention.