CN211852841U - Balanced high-speed electromagnetic valve - Google Patents

Abstract

The utility model discloses a balanced type high-speed solenoid valve, it contains: an actuator is connected with a valve body, a balance diaphragm is clamped between the actuator and the valve body, a sliding shaft passage is arranged in the valve body, an inner sliding shaft and an adjustable outer sliding shaft are arranged in the sliding shaft passage, an upper abutting surface and a lower abutting surface are arranged in the center of the inner sliding shaft, an inner sliding shaft fixing piece is matched with the lower portion of the inner sliding shaft and connected inside the adjustable outer sliding shaft, the pressure balance and stability of fluid can be kept during exhaust, the elastic force of a spring and the displacement of the lower abutting surface can be changed by adjusting the displacement distance of the adjustable outer sliding shaft, and the balance diaphragm with different thicknesses can be replaced to drive the inner sliding shaft to perform high-speed reciprocating movement.

Description

Balanced high-speed electromagnetic valve

Technical Field

The utility model relates to a solenoid valve technical field, especially a structure of balanced type high-speed solenoid valve.

Background

In the current market of solenoid valves, under the circumstances of many technological structural advances, the overall valve seat volume originally limited by specific structural design is also improved, and such valve bodies can usually operate in a faster movement period, so that many related technologies can improve the valve bodies;

taiwan patent I277698 "direct operated pneumatic valve with differential assisted return" wherein the fluid control valve has a valve body portion with fluid inlet and discharge ports, an axially extending flow passage in the valve body and an inlet communicating with the discharge port, a valve member disposed in the flow passage capable of directing fluid from the inlet to the discharge port, the valve member having a first valve head portion and a second valve head portion of different diameter design capable of engaging a first sealing diameter and a second sealing diameter in the passage, and a valve seating member acting on the first valve head portion and the second sealing diameter in contact generates a net return force capable of directing the valve member in a second direction opposite to the first direction when the valve actuator force is removed. Therefore, it can be understood that when the valve actuator is out of operation, the valve assembly can be in a pressure balance state, which represents that the valve actuator needs to trigger the valve member to perform displacement acceleration through force; when the valve actuator is operated, unbalanced pressure is generated, and different valve members in the passage are matched to accelerate the valve members, so that the valve assembly does not need a bypass port, the overall cost is reduced, and the purpose of accelerating the displacement of the valve can be achieved.

However, when the open end of the aforementioned structure passes through the air pressure source, the air pressure source also easily causes high noise when passing through the valve equalization channel, and the valve members inside the structure are slightly unstable due to rapid displacement.

Please refer to taiwan patent I240050 "direct-acting pneumatic valve with air-assisted return stroke", wherein the actuator valve assembly includes a valve body having a pressurized air supply inlet port in communication with a source of pressurized air, and at least a single cylindrical port, the valve body further having an axially extending valve bore therein and a valve member supported for movement within the valve bore between predetermined positions for selectively directing pressurized air from the inlet port through the cylindrical port, an actuator mounted to the valve body for moving the valve member in a first direction, and a biasing member disposed between the valve member and the valve body to provide a biasing force to the valve member in an opposite direction, also, an air assist passage is included that provides a source of pneumatic pressure that, in conjunction with the biasing member, is operated together to operatively move the valve member in a direction opposite to the movement caused by the actuator. The foregoing structure enables the valve to be actuated more quickly by air assist, and the valve assembly can include a smaller biasing member and also provide less force to move the valve member more quickly, if the solenoid valve assembly is de-energized, quickly and efficiently moving the valve member away from the second or energized position, and the air assist passage can also provide the necessary mechanical urging force to assist in moving the valve member to the de-energized position.

However, the air auxiliary passage in the above structure is connected to the outlet port, although it is operated in conjunction with the biasing member, when the valve member is displaced, the related air source is circulated to the air auxiliary passage and the outlet port through the valve assembly, which causes the valve assembly to be affected by the dispersed discharge of the air source, so that the valve member cannot be rapidly restored at a restoration rate even in cooperation with the elastic force of the spring, and there is a disadvantage in that the improvement of the elastic restoration is required.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a balanced type high speed solenoid valve, it mainly utilizes the inside slide-shaft passageway of valve body, through setting up interior slide-shaft and adjustable outer slide-shaft, the balanced diaphragm and the actuator that cooperation valve body top set up are connected, let the last top that interior slide-shaft set up support the face with support the face down, when can further cooperate the pressure source through the slide-shaft passageway, drive interior slide-shaft and carry out corresponding displacement action, and utilize the adjustable outer slide-shaft adjustment of locating in this interior slide-shaft outside to support the displacement distance of face down, the elasticity that enables the spring and the displacement of supporting the face down produce the change, and the cooperation is changed the balanced diaphragm of different thickness, make interior slide-shaft can carry out high-speed adjustment.

In order to solve the above problems and achieve the object of the present invention, the present invention provides a balanced high-speed solenoid valve, wherein an actuator has a coil formed by a movable iron cooperating with a fixed iron, and a push rod penetrating through the fixed iron is arranged below the coil; a valve body, in which there is a slide shaft channel, in which there are an internal slide shaft and an adjustable external slide shaft, a balance diaphragm is set above the valve body and is connected with an actuator to make the push rod push against the balance diaphragm, the center of the internal slide shaft is set with an upper and a lower push surfaces, an internal slide shaft fixing piece is connected with the interior of the adjustable external slide shaft matching with the lower of the internal slide shaft, when the pressure source pushes the internal slide shaft to move downwards through the slide shaft channel to the upper push surface, the pressure source can be discharged through an air outlet in the slide shaft channel, and the lower push surface pushes against the adjustable external slide shaft to make the air outlet be closed, when the pressure source weakens, the elastic force of a spring connected below the internal slide shaft will produce thrust to make the air outlet flow through the air outlet, and the displacement distance can be adjusted by the adjustable external slide shaft to make the elastic force of the spring and the displacement of the lower push surface change, so that the inner sliding shaft can reciprocate at high speed.

The second purpose of the utility model is that the balance diaphragm can be matched with the distance of the adjustable outer sliding shaft to adjust the displacement, and different thicknesses can be changed by matching the balance diaphragm.

The third objective 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.

For the fourth purpose of the present invention, the thickness of the balance membrane is between 0.015 cm and 0.035 cm.

The utility model discloses balanced type high speed solenoid valve, through the last face of supporting and the face of supporting of pushing up down of interior slide shaft central authorities, slide shaft mounting and adjustable outer slide shaft in the cooperation, can let the pressure source when flowing via the inside slide shaft passageway of this valve body, can no longer produce sharp-pointed noise, and through the balanced diaphragm of cooperation and adjustable outer slide shaft mutual regulation, can let interior slide shaft when the displacement actuates, the elasticity of this spring is replied and is not influenced by relevant pressure, the smooth high speed regulation that carries on of slide shaft ability in messenger.

Drawings

Fig. 1 is a schematic view of the present invention;

fig. 2 is a partially enlarged view of fig. 1 according to the present invention;

fig. 3 is a schematic diagram illustrating the displacement of the inner sliding shaft in fig. 2 according to the present invention;

fig. 4 is a schematic diagram of another embodiment of the present invention.

Description of reference numerals:

(10) .. actuator

(11) .. coil

(111) .. moving iron

(112) .. fixed iron

(1121) .. push rod

(20) .. valve body

(21) .. balance diaphragm

(22) .. slide shaft path

(221) .. inner sliding axle

(2211) .. Upper abutting surface

(2212) .. lower abutting surface

(2213) .. spring

(2214) .. internal slide axle fixer

(222) .. adjustable external sliding axle

(A) .. air outlet

(P.) pressure source

(R.) exhaust port

(X.) displacement distance

(Y).

Detailed Description

The embodiments described below by referring to the drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

The utility model relates to a balanced type high-speed solenoid valve, please refer to as shown in fig. 1, wherein the structure includes: an actuator 10, wherein a movable iron 111 is disposed on the upper portion of the interior thereof, a fixed iron 112 is disposed on the lower portion of the interior thereof, the movable iron 111 cooperates with the fixed iron 111 to form a coil 11, a push rod 1121 disposed through the fixed iron 112 is disposed below the coil 11, wherein a gap Y exists between the movable iron 111 and the fixed iron 111, and the length of the gap Y can be changed by the length of the push rod 1121.

A valve body 20, having a sliding shaft passage 22 inside, the sliding shaft passage 22 being disposed axially, and an inner sliding shaft 221 and an adjustable outer sliding shaft 222 being further disposed inside the sliding shaft passage 22, a balance diaphragm 21 being disposed above the valve body 20 and being clamped by the actuator 10, so that the valve body 20 is connected with the actuator 10, and the push rod 1121 pushes against the balance diaphragm 21.

The center of the inner sliding shaft 221 is slightly protruded from the diameter of the inner sliding shaft 221, and an upper abutting surface 2211 and a lower abutting surface 2212 are disposed therein, and an inner sliding shaft fixing member 2214 is connected to the inside of the adjustable outer sliding shaft 222 in a manner of matching with the lower portion of the inner sliding shaft 221.

As shown in fig. 2 to fig. 3, when a pressure source P pushes the inner sliding shaft 221 to move downward through the sliding shaft passage 22 to the upper abutting surface 2211, the pressure source P is discharged through an air outlet a located in the sliding shaft passage 22, and the lower abutting surface 2212 abuts against the adjustable outer sliding shaft 222 to make an air outlet R in a closed state; when the pressure source P is weakened, the elastic force of a spring 2213 connected below the inner sliding shaft 221 will generate a pushing force to make the air outlet a flow through the air outlet R.

The displacement distance X is adjusted by the adjustable outer sliding shaft 222, and the range of the displacement distance X is 0.01 cm to 0.03 cm, so that the elastic force of the spring 2213 and the displacement of the lower abutting surface 2212 can be further changed, and in more detail, the pressure source P is a downward force corresponding to the contact area and the traveling direction of the upper abutting surface 2211 of the inner sliding shaft 221; the contact area and the moving direction of the spring 2213 corresponding to the lower abutting surface 2212 of the inner sliding shaft 221 are upward forces, and since the contact areas are equal, the downward force is equal to the upward force, when the air outlet a of the inner sliding shaft 221 exhausts through the air outlet R, the inner sliding shaft 221 forms a return action without pressure difference assistance, that is, when the pushing force of the pushing rod 1121 is stopped, the spring 2213 is not affected to push the upper abutting surface 2211 to close the air outlet a, i.e., the balance structure claimed in this application. In addition to the faster response time when the inner sliding shaft 221 is displaced, and the balance diaphragm 21 is replaced with different thicknesses, the thicker the thickness the smaller the tension, the thinner the thickness the greater the tension, so as to achieve the purpose of adjusting the tension with different magnitudes, so that the moving distance of the push rod 1121 in the actuator 10 and the inner sliding shaft 221 in the valve body 20 is reduced or increased when moving at a high speed, thereby adjusting the displacement, the thickness of the balance diaphragm 21 may be between 0.015 cm and 0.035 cm, and the gap Y needs to be greater than the displacement distance X, so as to ensure the high-speed movement of the push rod 1121 and the inner sliding shaft 221.

As shown in fig. 4, the balance diaphragm 21 is removed to be changed into a piston and an O-ring, the inner sliding shaft fixing member 2214 of the inner sliding shaft 221 is removed, and the length of the adjustable outer sliding shaft 222 is lengthened, so that the adjustable outer sliding shaft 222 is adjusted when the upper abutting surface 2211 and the lower abutting surface 2212 of the inner sliding shaft 221 perform a return operation without pressure difference assistance.

To sum up, the utility model discloses balanced type high speed solenoid valve, through the inside slide shaft passageway 22 of establishing of valve body 20, through the adjustable outer slide shaft 222 in the interior slide shaft 221 of below connection interior slide shaft mounting 2214 and locating this interior slide shaft mounting 2214 outside, further through the action of adjustment displacement distance X and the thickness of changing this balanced diaphragm 21, lets this interior slide shaft 221 must be in order to reach balanced and have the purpose of actuating at a high speed.

The structure, features and effects of the present invention have been described in detail above according to the embodiment shown in the drawings, and the above description is only the preferred embodiment of the present invention, but the present invention is not limited to the implementation scope shown in the drawings, and all changes made according to the idea of the present invention or equivalent embodiments modified to the same changes should be considered within the protection scope of the present invention when not exceeding the spirit covered by the description and drawings.

Claims (4)

1. A balanced, high-speed solenoid valve, comprising: an actuator (10) having a coil (11) formed by a movable iron (111) cooperating with a fixed iron (112), and a push rod (1121) passing through the fixed iron (112) is provided below the coil (11); a valve body (20), having a sliding shaft passage (22) inside, an inner sliding shaft (221) and an adjustable outer sliding shaft (222) are disposed in the sliding shaft passage (22), and after a balance diaphragm (21) is disposed above the valve body (20), the balance diaphragm (21) is connected with the actuator (10) in a matching manner, so that the push rod (1121) abuts against the balance diaphragm (21), characterized in that: an upper abutting surface (2211) and a lower abutting surface (2212) are arranged at the center of the inner sliding shaft (221), an inner sliding shaft fixing part (2214) is matched with the lower part of the inner sliding shaft (221) and connected to the inner part of the adjustable outer sliding shaft (222), when a pressure source (P) pushes the inner sliding shaft (221) to move downwards through the sliding shaft passage (22) to the upper abutting surface (2211), the pressure source (P) can be discharged through an air outlet (A) in the sliding shaft passage (22), the lower abutting surface (2212) abuts against the adjustable outer sliding shaft (222) to enable an air outlet (R) to be closed, when the thrust of the push rod (1121) is weakened, the elastic force of a spring (2213) connected below the inner sliding shaft (221) generates thrust, the air outlet (A) is enabled to flow through the air outlet (R), and the displacement distance (X) of the adjustable outer sliding shaft (222) is used for adjusting, the elastic force of the spring (2213) and the displacement of the lower abutting surface (2212) are changed, so that the inner sliding shaft (221) can be adjusted at high speed.

2. The balanced high-speed solenoid valve according to claim 1, wherein the balancing diaphragm (21) can be adjusted in displacement distance in cooperation with the adjustable outer slide shaft (222) to replace the balancing diaphragm (21) with different thickness.

3. The balanced high-speed solenoid valve according to claim 1, wherein the displacement distance of the adjustable outer spool (222) ranges from 0.01 cm to 0.03 cm.

4. Balanced high-speed solenoid valve according to claim 2, characterised in that the balancing diaphragm (21) has a thickness comprised between 0.015 and 0.035 cm.

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