TWM519205U - The valve having two opposing self-sealing poppets - Google Patents

Description

Aligned self-sealing piston valve

This creation is directed to a fluid control element, particularly a valve for controlling the flow of a liquid or gaseous substance.

Traditionally, a valve has only a single piston to control the flow of material through the passage, such as liquids, gases, or other materials. (1) When the flow of material is to be stopped, the valve is provided with a spring, pneumatic pressure, electromagnet, electromechanical device, mechanical screw or mechanical lever to force the piston to seal the passage. (2) When the flow of material is to be stopped, the valve is forced to seal the passage by a spring, pneumatic pressure, electromagnet, electromechanical device, mechanical screw or mechanical control rod.

External force is required to seal the passage. Therefore, the creator has studied a valve that uses the pressure of a substance to stop the flow of matter and seal the passage. Since the pressure of the substance is utilized, the external force required to seal the passage is minimized. Therefore, the material flow can be precisely controlled by the valve.

The main purpose of this creation is to provide a valve that closes the flow path with minimal external force.

To achieve this, a valve according to the present invention includes a valve body, a first piston, a second piston, a diaphragm, a first control rod, a second control rod, and an actuator. The valve body includes a cavity disposed therein, disposed on opposite sides of the cavity and Two channels communicating with the cavity, and a first piston seat and a second piston seat respectively disposed adjacent to the ends of the channels. The first piston and the second piston are disposed opposite to each other and correspond to the first piston seat and the second piston seat, respectively. The diaphragm is disposed within the valve body to define the cavity and to maintain the substance within the cavity. The first control rod and the second control rod each have an end disposed below the diaphragm and extending into the cavity to contact the pistons, and the other end is disposed above the diaphragm and attached to the brake. The actuator can be manual, pneumatic, mechanical or electric.

One of the features of the present invention is that the substance exerts pressure on the rear surface of the pistons to press the pistons against the piston seats, thereby creating a seal for the passage. By utilizing the pressure of the substance, the only external force required is to move the piston to contact the piston seat. As long as the total force of the substance and the control rod pushing the rear surface of the piston is greater than the force of the substance pushing against the front surface of the piston, the material stops flowing. When the valve is in a closed state to stop the flow of material in either direction, the two piston sets are located opposite each other within the valve body.

This case provides a valve that can be configured to be normally closed or normally open. The valve can be operated by various types of actuators, such as manual, pneumatic, mechanically powered or powered devices.

Preferably, the piston is integrally formed. The valve body is also integrally formed. The diaphragm and the lever are also made of any suitable elastomeric polymer or elastomeric material.

1‧‧‧ valve body

1a‧‧‧First piston seat

1b‧‧‧Second piston seat

1c‧‧‧ entrance channel

1d‧‧‧Exit channel

1e‧‧‧cavity

2‧‧‧First Piston

2a‧‧‧first protrusion

2b‧‧‧Drilling

2c‧‧‧second protrusion

3‧‧‧second piston

4‧‧‧Separator

4a‧‧‧First lever

4b‧‧‧Second lever

4c‧‧‧ pivot point

42‧‧‧ gap

Figure 1 is a cross-sectional view of a self-sealing piston valve according to the present invention, wherein the piston valves are in a closed state to stop the flow of material; and Figure 2 is a cross-sectional view of the self-sealing piston valve according to the present invention, wherein the piston valves are located The open state allows the material to flow; and Figure 3 shows an enlarged cross-sectional view of the piston and piston seat of Figure 2.

Referring to Figures 1 to 3, the self-sealing piston valve is used to open or close the flow of the substance. Substance refers to any type of fluid, such as liquids, gases, liquid chemicals, gaseous chemicals, and the like. Figure 1 shows the valve in a closed state, which closes the flow path. Figures 2 and 3 show the valve in an open state, which opens the flow path. A valve according to a preferred embodiment of the present invention includes a valve body 1, a first piston 2, a second piston 3, a diaphragm 4, a first control rod 4a, a second control rod 4b and an actuator (Figure not shown).

The valve body 1 includes a cavity 1e disposed therein, an inlet passage 1c, an outlet passage 1d, a first piston seat 1a that is flat and round, and a second piston seat 1b that is round and round. The inlet passage 1c and the outlet passage 1d are disposed on opposite sides of the cavity 1e and communicate with the cavity 1e. The first piston seat 1a is disposed around one end of the inlet passage 1c adjacent to the cavity 1e, and the second piston seat 1b is disposed around one end of the outlet passage 1d adjacent to the cavity 1e. When the valve is in the open state, the substance flows into the cavity 1e from the inlet passage 1c, and flows out of the cavity 1e into the outlet passage 1d. Preferably, the valve body 1 is integrally formed.

The diaphragm 4 is a circular flat plate that is disposed in the valve body 1 to define a cavity 1e and a holding substance sealed in the cavity 1e. The first lever 4a and the second lever 4b each have a first end extending above the diaphragm 4 and a second end extending below the diaphragm 4. The first lever 4a and the second lever 4b are each pivoted at a pivot point 4c to allow the first lever 4a and the second lever 4b to pivot within a predetermined angular amount. It is preferable that the diaphragm 4, the first lever 4a and the second lever 4b are integrally formed and are a single piece. The first lever 4a and the second lever 4b, each of which may have an insert disposed therein to improve mechanical strength.

The cylindrical first piston 2 and the second piston 3 are disposed in the cavity 1e and opposed to each other. The first piston 2 and the second piston 3 are mounted at the second ends of the first lever 4a and the second lever 4b, and are respectively located at the positions corresponding to the first piston seat 1a and the second piston seat 1b. The first lever 4a and the second lever 4b are respectively pivoted to move a first piston 2 and a second piston 3 toward or away from the first piston seat 1a and the second piston seat 1b. The first piston 2 has a first side facing the plane of the inlet passage 1c and a second side facing the cavity 1e, the second piston 3 having a first side facing the plane of the outlet passage 1d and a second side facing the cavity 1e. The first side of the first piston 2 and the second piston 3 may abut against the first piston seat 1a and the second piston seat 1b to form a seal that covers the inlet passage 1c and the outlet passage 1d, respectively. When the flow of material is to be stopped or allowed, the first piston 2 and the second piston 3 close or open the flow path by moving axially toward or away from the first piston seat 1a and the second piston seat 1b.

Referring to FIG. 3, the first piston 2 and the second piston 3 each have a bore 2b to accommodate the first lever 4a and the second lever 4b. A first protrusion 2a is disposed around an upper portion of the bore 2b of the piston, and a second protrusion 2c is disposed around an intermediate portion of the other side of the bore 2b. There is a gap 42 between the piston and the control rod so that the piston is not rigidly fixed to the control rod to allow the control of the first projection itself to move. When the material flow is turned on, the first lever 4a and the second lever 4b pry the first piston 2 and the second piston 3 from the first piston seat 1a and the second piston seat 1b on the first protrusion 2a. Therefore, when the valve according to the present invention is shifted from the closed state to the open state, the amount of force necessary to move the first piston 2 and the second piston 3 away from the first piston seat 1a and the second piston seat 1b is reduced. . Preferably, the first piston 2 and the second piston 3 are integrally formed.

The first ends of the first lever 4a and the second lever 4b may be coupled to the actuator to open or close the flow path. This valve can be operated by different types of actuators, Such as manual, pneumatic, mechanical or electronic means.

When the substance and the total force exerted by the first lever 2a and the second lever 4b on the second side of the first piston 2 and the second piston 3 are greater than the substance applied to the first surface of the first piston 2 and the second piston 3 When the power is on, the flow of matter stops.

When the substance and the first control rod 4a and the second control rod 4b exert a total force on the second side of the first piston 2 and the second piston 3, less than the substance is applied to the first surface of the first piston 2 and the second piston 3 When the power is on, the flow of matter opens.

Since the pressure of the substance is utilized, the external force from the first lever 4a and the second lever 4b is required to be minimized. Therefore, the valve according to the present case can be accurately controlled.

1‧‧‧ valve body

1a‧‧‧First piston seat

1b‧‧‧Second piston seat

1c‧‧‧ entrance channel

1d‧‧‧Exit channel

1e‧‧‧cavity

2‧‧‧First Piston

3‧‧‧second piston

4‧‧‧Separator

4a‧‧‧First lever

4b‧‧‧Second lever

4c‧‧‧ pivot point

Claims (8)

A self-sealing piston valve includes: a valve body having two piston seats disposed opposite to each other; a first piston and a second piston respectively disposed corresponding to the piston seats and configured to be axially a flow path that moves toward or away from the piston seats to close or open the substance; and a first control rod and a second control rod respectively coupled to the first piston and the second piston, the first control rod And each of the second control rods is pivotally disposed at a pivot point to move the pistons axially toward or away from the piston seats, the first control rod and the second control rod being manually Actuated by pneumatic, mechanical or electronic means; wherein each of the pistons further comprises a bore for receiving the control rod, a first protrusion disposed at an upper periphery of one side of the borehole and at the periphery thereof The inner side, and a second protrusion are disposed at a half height of the hole around the other side of the drilled hole and at the inner side thereof, there is a gap between the piston and the control rods, so The piston is not rigidly attached to the levers, Allowing the activity of the first lever protrusion. The self-sealing piston valve of claim 1, further comprising a diaphragm coupled to the first control rod and the second control rod. The self-sealing piston valve of claim 2, wherein the diaphragm, the first control rod and the second control rod are integrally formed. The self-sealing piston valve of claim 2, wherein the diaphragm, the first control rod and the second control rod are made of a polymer or an elastomer material. The self-sealing piston valve of claim 1, wherein the valve body is integrally formed. The self-sealing piston valve of claim 1, wherein the first piston is integrally formed and the second piston is integrally formed. The self-sealing piston valve of claim 1, wherein the first protrusion and the second protrusion in the piston respectively abut the portions of the control rod in the piston on. The self-sealing piston valve of claim 2, wherein the pivoting points of the levers are above the diaphragm of the valve body.