A dead volume free rocker arm two-way solenoid valve

Abstract

This invention relates to a dead-volume-free rocker arm two-way solenoid valve, comprising a valve body, a valve seat, a fluid inlet, a fluid outlet, a rocker arm, and a diaphragm. The valve seat covers the valve body. The valve body, valve seat, fluid inlet, fluid outlet, and diaphragm together form a fluid flow channel. The flow channel is provided with a sweeping structure that eliminates dead volume. The sweeping structure includes a first inclined surface and a guide vane. The first inclined surface is the inclined surface on the left side of the diaphragm, near the fluid inlet. The flow channel slopes upward in a horizontal direction from the fluid inlet to the fluid outlet, with the fluid outlet located at the farthest end of the flow channel. The guide vane forms a flow guiding structure to control the fluid in the flow channel to prevent rotation and thus prevent the formation of dead volume. By adopting the above structure, the following effects can be achieved: the flow conditions of the fluid inside the valve are completely changed, the dead volume inside the valve is eliminated, the experimental accuracy and precision are improved, and the economic benefits and experimental results are exceptionally significant.

Description

Technical Field

[0001] This invention relates to the fields of rocker arm solenoid valve technology and analytical instrument technology. Specifically, it is a rocker arm two-way solenoid valve with no dead volume that utilizes the sweeping principle in fluid mechanics to design a sweeping structure, achieving the effect of no fluid (including liquid or gaseous reagents) residue inside the rocker arm two-way solenoid valve, thereby improving the accuracy and precision of experiments. Background Technology

[0002] Currently, rocker arm solenoid valves are relatively advanced and delicate components, and are therefore frequently installed in sophisticated, cutting-edge, and expensive experimental analytical equipment. Due to their high precision, sophistication, and cost, these devices are usually not dedicated to the detection of a single fluid (including liquids or gases) in order to save on experimental costs and expenses. Instead, they are often used for different fluids (including liquids or gases) at different times. However, because current technology and research focus too much on rocker arm technology, a drawback of existing rocker arm valve technology has been overlooked: there is a dead volume inside the valve. When two fluids (including liquids or gases) pass through it, the reagents remaining inside the valve affect the accuracy of the measurement.

[0003] Therefore, this invention discloses a rocker arm two-way solenoid valve with no dead volume, which utilizes the sweeping principle in fluid mechanics to design a sweeping structure, achieving the effect of no fluid (including liquid or gaseous reagents) residue inside the rocker arm two-way solenoid valve, thereby improving the accuracy and precision of experiments. Summary of the Invention

[0004] The purpose of this invention is to provide a dead-volume-free rocker arm two-way solenoid valve that utilizes the sweeping principle in fluid mechanics to design a sweeping structure, achieving the effect of no fluid (including liquids or gases and other reagents) residue inside the rocker arm two-way solenoid valve, thereby improving the accuracy and precision of experiments.

[0005] The technical solution adopted in this invention is: a two-way solenoid valve with a rocker arm and no dead volume, comprising a valve body, a valve seat, a fluid inlet, a fluid outlet, a rocker arm, and a diaphragm. The valve seat covers the valve body, the rocker arm and the diaphragm are both disposed on the valve body, and the fluid outlet and fluid inlet are both disposed on the valve seat. The valve body is provided with a moving armature and a spring. The valve body, valve seat, fluid inlet, fluid outlet, and diaphragm together form a fluid flow channel. The rocker arm, driven by the moving armature and the spring, causes the diaphragm to move, thereby opening and closing the flow channel. The invention is characterized in that: the flow channel is provided with a sweeping structure that eliminates the dead volume of the fluid; the sweeping structure includes a first inclined surface and a guide vane. The first inclined surface is located on the left side of the diaphragm, near the fluid inlet. The flow channel is horizontally inclined upward from the fluid inlet to the fluid outlet, with the fluid outlet located at the farthest end of the valve body flow channel. The guide vane is a boss located below the valve seat and near the fluid outlet. When the solenoid valve is in the on state, the right side of the diaphragm abuts against the bottom of the boss to form a flow guiding structure that prevents the fluid in the flow channel from rotating and forming a dead volume. Alternatively, the guide vane is a boss located above the right side of the diaphragm and near the fluid outlet. When the solenoid valve is in the on state, the top of the boss abuts against the bottom surface of the valve seat near the fluid outlet to form a flow guiding structure that prevents the fluid in the flow channel from rotating and forming a dead volume.

[0006] Furthermore, the sweeping structure also includes a second inclined surface, which is an inclined surface under the valve seat. The second inclined surface is located between the fluid inlet and the fluid outlet, and the inclination angle of the second inclined surface is 3 to 15 degrees in the horizontal direction from the fluid inlet to the fluid outlet.

[0007] The sweeping structure also includes an outlet end hole, which is located at the lower part of the fluid outlet and at the end of the valve body flow channel. The radius of the outlet end hole is larger than the radius of the inner hole of the fluid outlet, and the transition between the outlet end hole and the lower inner hole of the fluid outlet is smooth.

[0008] The first inclined plane is inclined at a horizontal angle of -3 degrees to -15 degrees from the fluid inlet to the fluid outlet.

[0009] Furthermore, the flow channel is inclined at a horizontal angle of 3 to 15 degrees from the fluid inlet to the fluid outlet.

[0010] Furthermore, the boss is an ellipse with a smooth transition from the fluid inlet to the fluid outlet, and the boss is located on the line connecting the fluid inlet and the fluid outlet.

[0011] Furthermore, the first inclined plane is inclined at -8 degrees in the horizontal direction from the fluid inlet to the fluid outlet.

[0012] Furthermore, the second inclined plane is inclined at 8 degrees in the horizontal direction from the fluid inlet to the fluid outlet.

[0013] The above structure achieves the following effects: The technical solution utilizes the sweeping principle of fluid mechanics to design a new flow pattern for the fluid (including liquids or gases) within the flow channel. The incoming fluid completely replaces and discharges the original fluid (including liquids or gases) within the valve, significantly improving the flow and controlling its condition within the valve, thus eliminating dead zones. Firstly, it completely alters the positions of the fluid inlet and outlet within the valve, reducing the volume that could create dead zones, and innovatively changes the flow channel structure, such as using an inclined channel to reduce the area of ​​diaphragm deformation. Secondly, it fully utilizes the "sweeping" technology of fluid mechanics, innovatively designing an inclined structure on the diaphragm area at the fluid inlet of the valve. The sweeping principle of fluid kinetic energy guides the fluid to sweep away the dead zones within the valve at the fluid inlet. The innovations include: 1) eliminating dead volume within the valve at the fluid inlet; 2) innovating a new structure at the fluid outlet, with guide vanes controlling fluid rotation to prevent it from rotating, thus making the fluid flow direction within the valve controllable and eliminating the possibility of dead volume and fluid residue due to uncontrolled fluid rotation in the flow channel between the fluid inlet and outlet; 3) designing the fluid outlet at the farthest end of the flow channel within the valve, overcoming the shortcomings of existing rocker arm solenoid valves where the fluid outlet is not at the farthest end of the flow channel, easily leading to dead volume and fluid residue; 4) completely changing the flow pattern of the fluid within the valve, eliminating dead volume, and achieving a residue-free effect for fluids (including liquids or gases) within the rocker arm two-way solenoid valve. This allows high-precision experimental analysis equipment to smoothly and accurately detect and analyze different fluids (including liquids or gases) at different times, improving experimental accuracy and precision, resulting in exceptionally significant economic benefits and experimental effects. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the prior art structure of the present invention.

[0015] Figure 2 This is a schematic diagram of the present invention in the active state.

[0016] Figure 3 This is a schematic diagram of the present invention in the off state.

[0017] Figure 4 This is a schematic diagram of the improved part of the present invention (in the conductive state).

[0018] Figure 5 This is a front perspective view of the improved liquid flow simulation of the present invention.

[0019] Figure 6This is a rear perspective view of the improved liquid flow simulation of the present invention.

[0020] In the figure, 1 is the valve body, 2 is the valve seat, 3 is the fluid inlet, 4 is the fluid outlet, 5 is the rocker arm, 6 is the diaphragm, 7 is the guide vane, 8 is the outlet end hole, 9 is the first inclined surface, 10 is the second inclined surface, and 11 is the moving armature and spring. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] like Figures 2 to 6 As shown, a dead-volume-free rocker arm two-way solenoid valve includes a valve body 1, a valve seat 2, a fluid inlet 3, a fluid outlet 4, a rocker arm 5, and a diaphragm 6. The valve seat 2 covers the valve body 1. The rocker arm 5 and the diaphragm 6 are both disposed on the valve body 1. The fluid outlet 4 and the fluid inlet 3 are both disposed on the valve seat 2. The valve body 1 is provided with a moving armature and a spring 11. The valve body 1, valve seat 2, fluid inlet 3, fluid outlet 4, and diaphragm 6 together form a fluid flow channel. The rocker arm 5, driven by the moving armature and spring 11, causes the diaphragm 6 to move, thereby opening and closing the flow channel. The valve is characterized by having a sweeping structure on the flow channel that eliminates dead volume. The sweeping structure includes a first inclined surface 9 and a guide vane 7. The inclined surface 9 is the inclined surface on the left side of the diaphragm 6. The first inclined surface 9 is close to the fluid inlet 3. The flow channel is horizontally inclined upward from the fluid inlet 3 to the fluid outlet 4. The fluid outlet 4 is located at the farthest end of the valve body flow channel. The guide vane 7 is a boss located below the valve seat 2 and near the fluid outlet 4. When the solenoid valve is in the conducting state, the right side of the diaphragm 6 abuts against the bottom of the boss to form a flow guiding structure that prevents the fluid in the flow channel from rotating and forming a dead volume. Alternatively, the guide vane 7 is a boss located above the right side of the diaphragm 6 and near the fluid outlet 4. When the solenoid valve is in the conducting state, the top of the boss abuts against the bottom surface of the valve seat 2 near the fluid outlet 4 to form a flow guiding structure that prevents the fluid in the flow channel from rotating and forming a dead volume.

[0023] Furthermore, the sweeping structure also includes a second inclined surface 10, which is an inclined surface under the valve seat 2. The second inclined surface 10 is located between the fluid inlet 3 and the fluid outlet 4. The inclination angle of the second inclined surface 10 is 3 to 15 degrees in the horizontal direction from the fluid inlet 3 to the fluid outlet 4, which makes the guiding effect more significant.

[0024] Furthermore, the sweeping structure also includes an outlet end hole 8, which is located at the lower part of the fluid outlet 4. The outlet end hole 8 is located at the end of the valve body flow channel. The radius of the outlet end hole 8 is larger than the radius of the inner hole of the fluid outlet 4. The transition between the outlet end hole 8 and the lower inner hole of the fluid outlet 4 is smooth, making the fluid flow out more smoothly.

[0025] Furthermore, the first inclined plane 9 is inclined at a horizontal angle of -3 degrees to -15 degrees from the fluid inlet 3 to the fluid outlet 4.

[0026] Furthermore, the flow channel is inclined at a horizontal angle of 3 to 15 degrees from the fluid inlet 3 to the fluid outlet 4, which makes the flow guiding effect more significant.

[0027] Furthermore, the protrusion is an elliptical shape with a smooth transition from the fluid inlet 3 to the fluid outlet 4. The protrusion is located on the line connecting the fluid inlet 3 and the fluid outlet 4, which makes the flow guiding effect better. In addition, it is not limited to an elliptical shape, but can also be a long strip shape, etc. Any structure that is conducive to forming a good flow guiding effect is within the protection scope of this invention.

[0028] Furthermore, the first inclined surface 9 is inclined at -8 degrees in the horizontal direction from the fluid inlet 3 to the fluid outlet 4. The inclination angle can also be -4 degrees, -5 degrees, -6 degrees, -7 degrees, -9 degrees, -10 degrees, -11 degrees, -12 degrees, -13 degrees, -14 degrees, etc.

[0029] Furthermore, the second inclined plane 10 is inclined at 8 degrees in the horizontal direction from the fluid inlet 3 to the fluid outlet 4. The inclination angle can also be 4 degrees, 5 degrees, 6 degrees, 7 degrees, 9 degrees, 10 degrees, 11 degrees, 12 degrees, 13 degrees, 14 degrees, etc.

[0030] Furthermore, the flow channel is inclined at 8 degrees in the horizontal direction from fluid inlet 3 to fluid outlet 4. The inclination angle can also be 4 degrees, 5 degrees, 6 degrees, 7 degrees, 9 degrees, 10 degrees, 11 degrees, 12 degrees, 13 degrees, 14 degrees, etc.

[0031] The specific working principle of this invention is as follows: The above technical solution utilizes the sweeping principle of fluid mechanics to design a new flow scheme for fluids (including liquids or gases) within the flow channel. The subsequent flow (including liquids or gases) completely replaces and discharges the original fluids (including liquids or gases) within the valve, significantly improving the flow of the fluids (including liquids or gases), controlling the flow conditions within the valve, and eliminating dead zones within the valve. Firstly, the positions of the fluid inlet and outlet within the valve are completely changed to reduce the volume that could form dead zones. The structure of the flow channel is innovatively altered, for example, by using an inclined flow channel to reduce the area of ​​diaphragm deformation. Secondly, by fully utilizing the "sweeping" technology of fluid mechanics, an inclined structure is innovatively designed on the diaphragm area at the fluid inlet of the valve. The sweeping principle of fluid kinetic energy guides the fluid to sweep away the dead zones within the valve area at the fluid inlet, eliminating dead zones. The innovations include: 1) eliminating the dead volume within the valve at the fluid inlet; 2) introducing a new structure at the fluid outlet, with guide vanes controlling fluid rotation to prevent it from rotating, thus making the fluid flow direction within the valve controllable and eliminating the possibility of fluid residue due to uncontrolled fluid rotation in the flow channel between the fluid inlet and outlet; 3) designing the fluid outlet at the farthest end of the flow channel within the valve, overcoming the shortcomings of existing rocker arm solenoid valves where the fluid outlet is not at the farthest end of the flow channel, easily leading to dead volume and fluid residue; 4) completely changing the flow pattern of the fluid within the valve, eliminating the dead volume, and achieving a residue-free effect for fluids (including liquids or gases) within the rocker arm two-way solenoid valve. This allows high-precision experimental analysis equipment to smoothly and accurately detect and analyze different fluids (including liquids or gases) at different times, improving experimental accuracy and precision, with exceptionally significant economic benefits and experimental results.

Claims

1. A two-way solenoid valve with a rocker arm and no dead volume, comprising a valve body, a valve seat, a fluid inlet, a fluid outlet, a rocker arm, and a diaphragm, wherein the valve seat covers the valve body, the rocker arm and the diaphragm are both disposed on the valve body, the fluid outlet and the fluid inlet are both disposed on the valve seat, the valve body is provided with a moving armature and a spring, and the valve body, valve seat, fluid inlet, fluid outlet, and diaphragm together form a fluid flow channel, wherein the rocker arm, driven by the moving armature and the spring, causes the diaphragm to move, thereby causing the flow channel to be in an open or closed state, characterized in that: The flow channel is equipped with a sweeping structure to eliminate dead volume of the fluid; the sweeping structure includes a first inclined surface and a guide vane. The first inclined surface is the inclined surface on the left side of the diaphragm, and the first inclined surface is close to the fluid inlet. The flow channel is horizontally inclined upward from the fluid inlet to the fluid outlet, and the fluid outlet is located at the farthest end of the valve body flow channel. The guide vane is a boss located below the valve seat and near the fluid outlet end. When the solenoid valve is in the on state, the right side of the diaphragm abuts against the bottom of the boss to form a guide structure that prevents the fluid in the flow channel from rotating and forming dead volume; or the guide vane is a boss located above the right side of the diaphragm and near the fluid outlet end. When the solenoid valve is in the on state, the top of the boss abuts against the bottom of the valve seat near the fluid outlet. The bottom surfaces abut against each other to form a flow-guiding structure that prevents the fluid in the flow channel from rotating and forming a dead volume; the sweeping structure also includes a second inclined surface, which is an inclined surface under the valve seat, located between the fluid inlet and the fluid outlet, with an inclination angle of 3 to 15 degrees in the horizontal direction from the fluid inlet to the fluid outlet; the sweeping structure also includes an outlet end hole, located at the lower part of the fluid outlet, at the end of the valve body flow channel, with a radius larger than the radius of the fluid outlet inner hole, and a smooth transition between the outlet end hole and the lower inner hole of the fluid outlet; the boss is an ellipse with a smooth transition from the fluid inlet to the fluid outlet, located on the line connecting the fluid inlet and the fluid outlet.

2. The dead-volume-free rocker arm two-way solenoid valve according to claim 1, characterized in that: The first inclined plane is inclined at -8 degrees in the horizontal direction from the fluid inlet to the fluid outlet.

3. The dead-volume-free rocker arm two-way solenoid valve according to claim 2, characterized in that: The second inclined plane is inclined at 8 degrees in the horizontal direction from the fluid inlet to the fluid outlet.

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