CN211738038U - Contraposition opening and closing double-piston valve - Google Patents

Abstract

An aligned opening and closing dual piston valve comprising: the valve body is provided with a cavity and two piston seats positioned on two opposite axial sides of the cavity; the two pistons are arranged in the chamber and can axially move towards or away from the two piston seats to open or close the chamber; the two control rods are respectively provided with a rod head and a rod arm, and the two rod arms are embedded into the cavity from the outside of the valve body and are respectively connected with the two pistons; the linkage member has two guide grooves, and the two rod heads are respectively embedded into the two guide grooves.

Description

Contraposition opening and closing double-piston valve

Technical Field

The present invention relates to a fluid control assembly, and more particularly to a dual piston valve capable of being opened and closed at opposite positions.

Background

Conventional valves use a single piston to control the flow of fluid (e.g., liquid, gas) in a conduit, which requires a piston seat and a braking mechanism (e.g., spring, pneumatic pressure, electromechanical assembly, mechanical screw, or mechanical plunger, etc.) on one radial side of the conduit. Since the piston moves in the radial direction of the pipe to open/close the fluid passage, the length of the piston seat must be greater than the stroke length of the piston (about the inner diameter of the pipe), and the piston seat plus the stopper mechanism makes the overall size of the valve large, so that the installation position of the valve is limited.

There are valves that use dual pistons to control the flow of material in a line, however the accuracy of controlling fluid flow using dual pistons remains to be improved.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a pair of position-aligning open/close double-piston valve capable of aligning to open or close a flow path, comprising: the valve body is provided with a cavity and two piston seats positioned on two opposite axial sides of the cavity; the two pistons are arranged in the chamber and can axially move towards or away from the two piston seats to open or close the chamber; the two control rods are respectively provided with a rod head and a rod arm, and the two rod arms are embedded into the cavity from the outside of the valve body and are respectively connected with the two pistons; the linkage member has two guide grooves, and the two rod heads are respectively embedded into the two guide grooves.

In one embodiment, the two club heads are spheres.

In one embodiment, the two guide channels are arc-shaped or oblique.

In one embodiment, the above-mentioned aligning automatic opening and closing piston valve further comprises: and a diaphragm disposed on a sidewall of the chamber, wherein the two lever arms are connected to the two pistons through the diaphragm.

In one embodiment, the diaphragm is a polymer film having elasticity.

The utility model discloses an counterpoint and open and close double-piston valve, the valve body has the cavity and is located two piston seats of the relative both sides of cavity axial, two pistons can move towards or keep away from two piston seats axially and open or closed cavity, the lever arm of two control levers is connected two pistons respectively by the outside embedding cavity of valve body, two pole heads imbed two guide's ditch of interlock spare respectively, because two pistons are along pipeline axial displacement, the pole head of control lever moves and opens or the fluid passage of closed valve body along the guide's ditch of interlock spare, and the interlock spare can keep the double-piston to open or closed position under the condition of not exerting external force, effectively promote the design elasticity of pipeline and control valve and flow control's accuracy.

Drawings

Fig. 1 is an axial sectional view of the closed state of the contraposition opening and closing double-piston valve of the present invention;

FIG. 2 is an axial sectional view of the opening state of the contraposition opening and closing dual-piston valve of the present invention;

fig. 3 is an axial cross-sectional view of the piston seat and the piston of the alignment opening and closing dual-piston valve of the present invention;

fig. 4 is a schematic top view of a linkage of the alignment on/off dual-piston valve according to an embodiment of the present invention.

Description of reference numerals:

1-alignment opening and closing double-piston valve, 10-valve body, 11, 12-piston, 13, 14-control rod, 15 ' -linkage piece, 16-diaphragm, 101-chamber, 102, 103-piston seat, 104, 105-connecting part, 111, 121-slotted hole, 131, 141-rod head, 132, 142-rod arm, 151 ', 152 ' -guide groove.

Detailed Description

The embodiments of the present invention will be described in more detail with reference to the drawings and the accompanying drawings, so that those skilled in the art can read the description to implement the embodiments. It should be noted that, for clearly showing the main features of the present invention, the drawings only show the relative relationship or operation manner between the main components in a schematic manner, and are not drawn according to the actual size, so the size, shape, arrangement, configuration, etc. of the main components in the drawings are only referred to, and are not used to limit the scope of the present invention.

The utility model discloses a counterpoint is opened and close double piston valve and is set up in the fluid pipeline, can open or the fluid passage in the closed fluid pipeline. Fig. 1 is the utility model discloses an axial cross-sectional view of the closed state of double-piston valve is opened and close in counterpoint, fig. 2 is the utility model discloses an axial cross-sectional view of the open mode of double-piston valve is opened and close in counterpoint.

As shown in fig. 1 and 2, the contraposition opening and closing dual-piston valve 1 includes: valve body 10, two pistons 11, 12, two control rods 13, 14, linkage 15 and diaphragm 16. The valve body 10 has a chamber 101 arranged axially (e.g., Z-axis in fig. 1 and 2), two piston seats 102, 103 located on opposite sides of the chamber 101, and two connecting portions 104, 105 respectively connecting the two piston seats 102, 103 and communicating with the chamber 101, wherein the two connecting portions 104, 105 have threads for engaging a fluid pipeline (not shown), and the two piston seats 104, 105 and the two connecting portions 104, 105 form a fluid passage therein. The two pistons 11, 12 are disposed in the chamber 101, and the two pistons 11, 12 are cylinders having a radial area larger than the radial area of the two piston seats 104, 105, and can move axially toward or away from the two piston seats 102, 103 to open or close the chamber 101. The two control rods 13, 14 have rod heads 131, 141 and lever arms 132, 142, respectively, and the two lever arms 132, 142 are respectively fitted into the two pistons 11, 12 from the outside of the valve body 10 via the diaphragm 16; the linkage member 15 is connected to a braking mechanism (including, but not limited to, manual, pneumatic, mechanical, or electric, not shown), and has two guide grooves 151, 152 (as shown in the top view of the linkage member 15 in fig. 1 and 2), and the two rod heads 131, 141 are spherical bodies and are respectively inserted into the two guide grooves 151, 152. The diaphragm 16 is made of a polymer having elasticity, and is disposed on the sidewall of the chamber 10, so that the lever arms 131 and 141 can reciprocate and prevent fluid from leaking in the radial direction of the chamber 10.

In this embodiment, when the dual-piston valve 1 is opened, the linkage member 15 is rotated by the brake mechanism, the rod heads 131, 141 of the two control rods 13, 14 slide from the end (proximal end) of the guide grooves 151, 152 near the center of the linkage member 15 to the end (distal end) of the linkage member 15 away from the center, the rod arms 132, 142 of the two control rods 13, 14 make the pistons 11, 12 synchronously open the fluid passages of the two piston seats 102, 103, the fluid flows from the pipeline on one side of the joint valve body 10 to the pipeline on the other side of the joint valve body 10, and when the linkage member 15 rotates counterclockwise by 90 degrees, the pistons 11, 12 reach the maximum opening state, and the rotation angle of the linkage member 15 is controlled by the brake mechanism, so as to precisely control the fluid flow rate of the pipeline.

When the contraposition opening and closing double-piston valve is closed, the brake mechanism rotates the linkage member 15, the rod heads 131 and 141 of the two control rods 13 and 14 slide from the far ends of the guide grooves 151 and 152 to the near ends, the rod arms 132 and 142 of the two control rods 13 and 14 enable the pistons 11 and 12 to synchronously close the fluid channels of the two piston seats 102 and 103, so that the fluid flow of a pipeline can be blocked, the size of the contraposition opening and closing double-piston valve 1 in the radial direction (such as the Y axis in fig. 1 and 2) of the pipeline is greatly reduced through the axial movement of the double pistons 11 and 12 along the pipeline, the distance between the adjacent pipelines can be reduced, and the design elasticity of the pipeline and the control valve is increased.

It should be noted that, when the user adjusts the alignment opening and closing dual-piston valve 1 to the state of opening or closing the fluid channel as required, the linkage 15 can keep the positions of the control rods 13 and 14 and the pistons 11 and 12 without the continuous application of external force by the brake mechanism, thereby effectively reducing the requirements of the alignment opening and closing dual-piston valve 1 on the brake mechanism and energy.

Fig. 3 is an axial sectional view of the piston seat and the piston of the alignment opening and closing dual-piston valve of the present invention. As shown in fig. 3, each piston 11, 12 has a slot 111, 121 into which a lever arm 132, 142 can be inserted. Each lever arm 132, 142 may further include an internally embedded reinforcement to improve its mechanical strength and the accuracy of the control of the pistons 11, 12.

Fig. 4 is a schematic top view of a linkage of the alignment on/off dual-piston valve according to an embodiment of the present invention. As shown in fig. 1, 2 and 4, in the present embodiment, the linking member 15 ' is a rectangular plate having two inclined guide grooves 151 ', 152 ', and the rod heads 131, 141 of the two control levers 13, 14 can be respectively inserted into the two guide grooves 151 ', 152 '. When the contraposition opening and closing double-piston valve is opened, the brake mechanism axially moves the linkage part 15 ', the rod heads 131 and 141 of the two control rods 13 and 14 slide from the proximal end of the guide grooves 151' and 152 'close to the center of the linkage part 15' to the distal end far away from the center of the linkage part 15 ', the rod arms 132 and 142 of the two control rods 13 and 14 enable the pistons 11 and 12 to synchronously open the fluid channels of the two piston seats 102 and 103, fluid flows into the pipeline on the other side of the joint valve body 10 from the pipeline on one side of the joint valve body 10, and the stroke length of the linkage part 15' is controlled through the brake mechanism, so that the fluid flow of the pipeline can be accurately controlled.

When the contraposition opening and closing double-piston valve is closed, the brake mechanism axially moves the linkage part 15 ', the rod heads 131 and 141 of the two control rods 13 and 14 slide from the far ends to the near ends of the guide grooves 151 ' and 152 ', and the rod arms 132 and 142 of the two control rods 13 and 14 enable the pistons 11 and 12 to synchronously close the fluid channels of the two piston seats 102 and 103, so that the fluid flow of the pipeline can be blocked.

To sum up, the utility model discloses an counterpoint is opened and close double-piston valve contains the valve body, two pistons, two control levers and interlock spare, the valve body has the cavity and is located two piston seats of the relative both sides of cavity axial, two pistons can move towards or keep away from two piston seats axially and open or closed cavity, the lever arm of two control levers is connected two pistons respectively by the outside embedding cavity of valve body, two ditch of leading of interlock spare are embedded respectively to two pole heads, because two pistons are along pipeline axial displacement, the pole head of control lever removes and opens or the fluid passage of closed valve body along the ditch of leading of interlock spare, and the interlock spare can keep the double-piston to open or closed position under the condition of not exerting external force, effectively promote the design elasticity of pipeline and control valve and the accuracy of flow control.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those of ordinary skill in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which come within the spirit and scope of the invention as defined by the appended claims be embraced by the present invention.

Claims (5)

1. The utility model provides a counterpoint opens and close double piston valve, sets up in fluid line, its characterized in that contains:

the valve body is provided with a cavity and two piston seats positioned on two opposite sides of the cavity in the axial direction;

two pistons arranged in the chamber and capable of moving axially towards or away from the two piston seats to open or close the chamber;

the two control rods are respectively provided with a rod head and a rod arm, and the two rod arms are embedded into the cavity from the outside of the valve body and are respectively connected with the two pistons;

the linkage piece is provided with two guide grooves, and the two rod heads are respectively embedded into the two guide grooves.

2. The aligned opening and closing dual-piston valve as claimed in claim 1, wherein the two rod heads are spheres.

3. The aligned opening and closing dual-piston valve as claimed in claim 1, wherein the two guide channels are arc-shaped or oblique.

4. The aligned opening and closing dual-piston valve according to claim 1, further comprising: and the diaphragm is arranged on the side wall of the chamber, and the two lever arms are connected with the two pistons through the diaphragm.

5. The aligned on-off dual-piston valve according to claim 4, wherein the diaphragm is a polymer film having elasticity.

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