TW202124866A - Balanced high-speed solenoid valve for the inner sliding shaft to perform high-speed reciprocating movement with the assistance of replacing the balance diaphragms of different thicknesses - Google Patents

Abstract

A balanced high-speed solenoid valve includes an actuator connected to a valve body, and a balance diaphragm sandwiched between the actuator and the valve body. Inside the valve body, there is a sliding shaft passage. Inside the sliding shaft passage, there are an inner sliding shaft and an adjustable outer sliding shaft. The center of the inner sliding shaft has an upper abutment surface and a lower abutment surface, and an inner sliding shaft fixing member is connected to the inner portion of the adjustable outer sliding shaft in cooperation with the lower portion of the inner sliding shaft, so as to maintain the fluid pressure balance and stability during exhausting. Furthermore, by adjusting the displacement distance of the adjustable outer sliding shaft, the elastic force of a spring and the displacement of the lower abutment surface can be changed. Also, with the assistance of replacing the balance diaphragms of different thicknesses, the balance diaphragm drives the inner sliding shaft to perform high-speed reciprocating movement.

Description

Balanced high-speed solenoid valve

This creation belongs to the field of solenoid valves, especially about the structure of a balanced high-speed solenoid valve.

At present, the solenoid valves on the market have improved a lot in the current technical structure, and the overall valve seat volume size, which was originally limited by the specific structure design, has also been improved. Such valve bodies can usually operate with a faster movement cycle. Therefore, there are many related technologies that can be improved for this;

Please refer to Taiwan Patent I277698 "Direct-operated pneumatic valve with differential auxiliary recovery", in which the fluid control valve has a valve body with a fluid inlet and a discharge port, and the axially extending flow passage and inlet in the valve body communicate with the discharge port , The valve member arranged in the flow channel can guide the fluid from the inlet to the discharge port. The valve member has a first valve head and a second valve head with different diameters, which can engage the first sealing diameter and the second valve head in the channel. Two sealing diameters, and the valve seat connecting member acting on the contact between the first valve head and the second sealing diameter generates a net restoring force, which can be in a second direction opposite to the first direction when the valve actuator force is removed Pilot valve member. Therefore, it can be understood that when the valve actuator stops operating, the valve assembly can be brought into a pressure equilibrium state, which means that the valve actuator needs to trigger the valve member to accelerate the displacement through force; and when the valve actuator operates, it will To generate unbalanced pressure, it is necessary to cooperate with different valve components in the channel to achieve an acceleration valve component, so that the valve assembly does not need a bypass port, reducing the overall cost, and achieving the purpose of accelerating valve displacement.

However, when the open end of the aforementioned structure passes through the air pressure source, when the air pressure source passes through the valve equalization channel, high noise is easily generated, and the internal valve components are moved quickly due to the rapid displacement, resulting in a little unstable situation. Therefore, there is still need for further improvement.

Please also refer to Taiwan Patent I240050 "Direct Actuating Pneumatic Valve with Air-Assisted Return", in which the actuating valve assembly includes a valve body with a pressurized air supply inlet port communicating with a pressurized air source, and at least a single cylindrical port The valve body also has an axially extending valve perforation, and a valve member is supported in the valve perforation to move between predetermined positions, and pressurized air is selectively guided to flow from the inlet port through the cylindrical port, The actuator is mounted on the valve body to move the valve member in a first direction, and a biasing member is arranged between the valve member and the valve body to provide a biasing force to the valve member in the opposite direction, and at the same time, contains An air auxiliary passage providing a pneumatic pressure source is combined with a biasing member and then actuated together to move the valve member operatively in a direction opposite to the movement induced by the actuator. The aforementioned structure can actuate the valve more quickly through air assist, and the valve assembly can include a smaller biasing member, and can also provide a smaller force to make the valve member move faster, if the solenoid valve assembly is disabled Therefore, the valve member can be moved quickly and effectively, especially the second or enabled position, and the air auxiliary passage can also provide the necessary mechanical driving force to assist in moving the valve member to the disabled position.

However, the air auxiliary passage in the aforementioned structure is connected to the outflow port. Although it is combined with the biasing member to act together, when the valve member is displaced, the relevant air source passes through the valve element to circulate to the air auxiliary passage and the outflow port. At this time, the valve element will be affected by the scattered discharge of the air source, and the valve member's recovery rate cannot be effectively and quickly recovered even if it is matched with the elastic force of the spring. Therefore, there is a disadvantage that the elastic recovery needs to be improved. In view of this, there is still a lot of room for improvement in the shortcomings of the above-mentioned two case structures. Therefore, the author has created a balanced high-speed solenoid valve after repeated creation and research and development.

The main purpose of this new model is to provide a balanced high-speed solenoid valve, which mainly utilizes the sliding shaft passage inside the valve body. The actuator is connected so that the upper and lower abutting surfaces of the inner sliding shaft can further cooperate with the pressure source to drive the inner sliding shaft to perform corresponding displacement actions when the pressure source passes through the sliding shaft passage. The adjustable outer sliding shaft on the outside of the sliding shaft adjusts the displacement distance of the lower top abutment surface, which can change the elastic force of the spring and the displacement of the lower top abutment surface, and cooperate with the replacement of balance diaphragms of different thicknesses to enable the inner sliding shaft to perform High-speed adjustment.

In order to solve the above-mentioned problems and achieve the purpose of the new type, the technical means of the present invention is a balanced high-speed solenoid valve, which is characterized in that the actuator has a coil composed of a movable iron and a fixed iron, and the coil is provided A push rod that penetrates the fixed iron; a valve body with a sliding shaft passage inside, an inner sliding shaft and an adjustable outer sliding shaft are arranged in the sliding shaft passage, and a balance diaphragm is arranged above the valve body, It is connected with an actuator to allow the push rod to abut against the balance diaphragm. The center of the inner sliding shaft is provided with an upper abutment surface and a lower abutment surface. Adjust the inside of the outer slide shaft. When the pressure source pushes the inner slide shaft downward through the slide shaft passage to the upper abutment surface, the pressure source can be discharged through an air outlet located in the slide shaft passage, and the lower The abutting surface abuts the adjustable outer sliding shaft to make the exhaust port closed. When the pressure source is weakened, the elastic force of a spring connected under the inner sliding shaft will generate thrust, allowing the exhaust port to circulate the exhaust It can also adjust the displacement distance with the adjustable outer sliding shaft, so that the elastic force of the spring and the displacement of the lower abutting surface are changed, so that the inner sliding shaft can perform high-speed reciprocating motion.

The second object of the present invention is that the balance diaphragm can cooperate with the adjustable outer sliding shaft to adjust the displacement distance, and the balance diaphragm can be replaced with different thicknesses.

The third object of the present invention is to adjust the displacement distance of the outer sliding shaft within a range of 0.01 cm to 0.03 cm.

The fourth object of the present invention is that the thickness of the balance diaphragm is between 0.015 cm and 0.035 cm.

The new balanced high-speed solenoid valve, through the upper and lower abutting surfaces of the center of the inner slide shaft, cooperates with the inner slide shaft fixing parts and the adjustable outer slide shaft, allowing the pressure source to pass through the inner slide shaft of the valve body When the channel is flowing, it can no longer produce sharp noises, and by cooperating with the balance diaphragm and the adjustable outer sliding shaft to adjust each other, when the inner sliding shaft is moved, the elastic force of the spring is not affected by the relevant pressure, so that The inner sliding shaft can be adjusted smoothly at high speed.

This model is a balanced high-speed solenoid valve. Please refer to Figure 1. The structure includes: an actuator (10) with a movable iron (111) on the upper part of the inside and a fixed iron on the lower part of the inside. (112), the movable iron (111) cooperates with the fixed iron (111) to form a coil (11), and a push rod (1121) penetrating the fixed iron (112) is provided under the coil (11) ), wherein there is a gap (Y) between the movable iron (111) and the fixed iron (111), and the length of the gap (Y) can be changed through the length of the push rod (1121);

A valve body (20) with a sliding shaft passage (22) inside, the sliding shaft passage (22) is axially arranged, and the sliding shaft passage (22) is further provided with an inner sliding shaft (221), and An adjustable outer sliding shaft (222). A balance diaphragm (21) is provided above the valve body (20) to cooperate with the actuator (10) to be clamped so that the valve body (20) can cooperate with the actuator (10). ) Is in a connected state, so that the aforementioned push rod (1121) abuts against the balance diaphragm (21);

The center of the aforementioned inner sliding shaft (221) is slightly protruding from the diameter of the inner sliding shaft (221), and an upper abutting surface (2211) and a lower abutting surface (2212) are provided here, and an inner sliding shaft fixing member (2214) Cooperate with the inner sliding shaft (221) to be connected to the inside of the adjustable outer sliding shaft (222);

Please refer to Figures 2 to 3, when a pressure source (P) pushes the inner slide shaft (221) downward through the slide shaft passage (22) to the upper abutment surface (2211), then The pressure source (P) can be discharged through an air outlet (A) located in the sliding shaft passage (22), and the lower abutting surface (2212) abuts the adjustable outer sliding shaft (222) to make a row The air port (R) is closed; and when the pressure source (P) is weakened, the elastic force of a spring (2213) connected below the inner sliding shaft (221) will generate a thrust, so that the air outlet (A) will flow through the Exhaust port (R);

The displacement distance (X) is adjusted through the adjustable outer sliding shaft (222), and the displacement distance (X) ranges from 0.01 cm to 0.03 cm, which can further allow the elastic force of the spring (2213) and the lower abutment surface ( The displacement of 2212) changes. In more detail, the pressure source (P) corresponds to the contact area and the direction of travel of the upper abutment surface (2211) of the inner sliding shaft (221), which is a downward force; and The spring (2213) corresponds to the contact area and the direction of travel of the lower abutting surface (2212) of the inner sliding shaft (221), which is an upward force. Since the contact area is equal, the downward force is equal to the upward force When the air outlet (A) of the inner sliding shaft (221) is exhausted through the exhaust port (R), the inner sliding shaft (221) is allowed to form a reset action without differential pressure assistance, in other words, when the push rod (1121) When the thrust of) stops, it will not affect the spring (2213) to push the upper abutment surface (2211) to close the air outlet (A), which is the balanced structure proposed in this case. In addition to allowing the inner sliding shaft (221) to respond more quickly when it is displaced, it can also be supplemented by the balance diaphragm (21) to replace different thicknesses. The thicker the thickness, the lower the tension, and the thinner the thickness is the tension. The larger is, the purpose of tension adjustment of different sizes can be achieved, so that the push rod (1121) in the actuator (10) and the inner sliding shaft (221) in the valve body (20) move at a high speed. The distance of movement can be reduced or increased to adjust its displacement. The thickness of the aforementioned balance diaphragm (21) can be between 0.015 cm and 0.035 cm, and the aforementioned gap (Y) needs to be greater than the displacement distance (X) In this way, the purpose of high-speed movement of the push rod (1121) and the inner sliding shaft (221) can be ensured.

Please refer to Figure 4 again, which is another embodiment of the balanced high-speed solenoid valve of this creation. All components in the structure are the same, except that the balance diaphragm (21) is removed and replaced with a piston and an O-ring. , And remove the inner slide shaft fixing part (2214) of the inner slide shaft (221), and lengthen the length of the parts of the adjustable outer slide shaft (222) to make the upper abutment surface (2211) of the inner slide shaft (221) When performing a reset action without differential pressure assistance with the lower abutment surface (2212), it is coordinated with the adjustable outer sliding shaft (222) for adjustment. Since there is only one O-ring in this embodiment, the frictional force of the O-ring is No increase, no resistance during high-speed movement;

In summary, the new balanced high-speed solenoid valve, through the sliding shaft passage (22) provided in the valve body (20), through the inner sliding shaft (221) connecting the inner sliding shaft fixing member (2214) through the lower part, and The adjustable outer sliding shaft (222) arranged on the outer side of the inner sliding shaft fixing member (2214) further adjusts the displacement distance (X) and changing the thickness of the balance diaphragm (21) so that the inner sliding shaft ( 221) To achieve balance and have the purpose of high-speed action.

(10): Actuator (11): Coil (111): Movable Iron (112): fixed iron (1121): putter (20): Valve body (21): Balance diaphragm (22): Sliding shaft passage (221): inner sliding shaft (2211): Top-to-face (2212): Bottom and Top to Face (2213): Spring (2214): inner sliding shaft fixing (222): Adjustable outer sliding shaft (A): Outlet (P): Pressure source (R): Exhaust port (X): Displacement distance (Y): Clearance

[Figure 1] is a schematic diagram of the new model. [Figure 2] is a partial enlarged view of the new model in Figure 1. [Figure 3] is a schematic diagram of the displacement of the inner sliding shaft in Figure 2 of the new model. [Figure 4] is a schematic diagram of the present invention in another embodiment.

(10): Actuator

(11): Coil

(111): Movable Iron

(112): fixed iron

(1121): putter

(20): Valve body

(21): Balance diaphragm

(22): Sliding shaft passage

(221): inner sliding shaft

(2211): Top-to-face

(2212): Bottom and Top to Face

(2213): Spring

(2214): inner sliding shaft fixing

(222): Adjustable outer sliding shaft

(A): Outlet

(P): Pressure source

(R): Exhaust port

Claims (4)

A balanced high-speed solenoid valve, comprising: an actuator (10) with a coil (11) composed of a movable iron (111) and a fixed iron (112), and the coil (11) is provided below A push rod (1121) passing through the fixed iron (112); a valve body (20) with a sliding shaft passage (22) inside, and an inner sliding shaft (221), And an adjustable outer sliding shaft (222). After the valve body (20) is provided with a balancing diaphragm (21), it is connected with the actuator (10) so that the push rod (1121) abuts against the balancing diaphragm The sheet (21) is characterized in that: an upper abutment surface (2211) and a lower abutment surface (2212) are arranged in the center of the inner sliding shaft (221), and an inner sliding shaft fixing part (2214) is matched with the inner sliding shaft (2211). 221) The lower part is connected to the inside of the adjustable outer sliding shaft (222), when a pressure source (P) passes through the sliding shaft passage (22) to the upper abutment surface (2211) to push the inner sliding shaft (221) toward Downward displacement, the pressure source (P) can be discharged through an air outlet (A) located in the sliding shaft passage (22), and the lower abutting surface (2212) abuts the adjustable outer sliding shaft (222) ) Make an exhaust port (R) in a closed shape. When the thrust of the push rod (1121) is weakened, the elastic force of a spring (2213) connected under the inner sliding shaft (221) will generate thrust to make the exhaust port (A) Circulate the exhaust port (R), and the displacement distance (X) of the adjustable outer sliding shaft (222) can be used to make the spring (2213) elastic force and the displacement of the lower abutment surface (2212) The change is made, so that the inner sliding shaft (221) can be adjusted at a high speed. For example, the balanced high-speed solenoid valve described in item 1 of the scope of patent application, wherein the balance diaphragm (21) can cooperate with the adjustable outer sliding shaft (222) to adjust the displacement distance, and the balance diaphragm (21) Cooperate with the replacement of different thickness. For the balanced high-speed solenoid valve described in item 1 of the scope of patent application, the range of the adjustable displacement distance of the outer sliding shaft (222) is between 0.01 cm and 0.03 cm. For the balanced high-speed solenoid valve described in item 2 of the scope of patent application, the thickness of the balanced diaphragm (21) is between 0.015 cm and 0.035 cm.

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