CN111692403B

CN111692403B - Vacuum large-capacity electric control proportional valve

Info

Publication number: CN111692403B
Application number: CN201910194875.2A
Authority: CN
Inventors: 游平政; 郑志圣; 陈郁澧
Original assignee: TAIWAN CHELIC CORP
Current assignee: TAIWAN CHELIC CORP
Priority date: 2019-03-14
Filing date: 2019-03-14
Publication date: 2022-09-13
Anticipated expiration: 2039-03-14
Also published as: CN111692403A

Abstract

A kind of vacuum large capacity electric control proportional valve, contain the body formed by valve base, middle valve base, guide seat, the body has a vacuum pressure cavity, there is a main diaphragm in the vacuum pressure cavity, the main diaphragm inlays and sets up a guide of the vacuum valve group and exhausts the straight lever, have a regulation channel which connects the vacuum pressure cavity in the guide seat, a guide's atmosphere channel is located in the middle valve base and leads to and connects to the main diaphragm below: the upper part of the valve seat forms a first vacuum destruction valve in the cooperation of the pilot exhaust straight rod, the upper part of the vacuum valve group forms a second vacuum destruction valve in the cooperation of the upper valve inner wall in the valve base, after the leading-in external atmospheric pressure pushes the opening and closing of the first vacuum destruction valve and the second vacuum valve, the straight rod embedding seat in the valve base cooperates with the lower part of the pilot exhaust straight rod to form the first valve, after the first valve is opened, the primary side pressure is accelerated through the auxiliary channel to form a secondary side pressure, and the lower part of the vacuum valve group cooperates with the second valve formed by the lower valve inner wall in the valve base to synchronously open and close.

Description

Vacuum large-capacity electric control proportional valve

Technical Field

The invention relates to a vacuum large-capacity electronic control proportional valve, which is characterized in that a pilot exhaust straight rod and a vacuum valve set are arranged in the vacuum large-capacity electronic control proportional valve, and the pilot exhaust straight rod is further matched with a pilot atmosphere channel to introduce atmospheric pressure and a main channel and an auxiliary channel for communicating a primary side pressure and a secondary side pressure, so that the pilot exhaust straight rod can adjust the vacuum strength through the up-down movement, and the purposes of energy conservation and precise adjustment can be achieved.

Background

Referring to fig. 14, a vacuum electrically controlled proportional valve widely used in the field of automation equipment in the prior art generally includes a setting hole (91) for an absorption object, a vacuum hole (92) connected to a vacuum pump, and an atmospheric hole (93) for adjusting vacuum pressure, and when the vacuum pump is operated, the pressure of the setting hole (91) and the fluid flowing to the vacuum hole (92) are sucked through an internal passage of the vacuum electrically controlled proportional valve to form vacuum, as indicated by an arrow in the figure;

when the vacuum electronic control proportional valve is in a testing process, an operator needs to accumulate experience for a long time and repeatedly test to manufacture a good vacuum electronic control proportional valve, but a loop in the structure of the vacuum electronic control proportional valve is relatively complex, so that a vacuum air pressure pipeline for testing and equipment need to be connected in a 90-degree corner mode, and for the testing operator, when the vacuum air pressure pipeline cannot be connected with the equipment in a straight-in and straight-out assembling mode for testing, more time and energy are consumed;

at present, if a loop inside a vacuum electronic control proportional valve in the prior art needs to be modified aiming at an internal air pressure loop, much time and money are needed for improvement, although the connection mode of an external vacuum air pressure pipeline can be changed, the matching of various parts also needs to be tested one by one, wherein if the original fine level of vacuum regulation and control needs to be maintained, related parts for vacuum regulation and control need to be redesigned, and if the vacuum electronic control proportional valve is used for a larger-capacity application, the pipeline connection and the matching of the parts are more complicated.

Disclosure of Invention

The invention relates to a vacuum large-capacity electric control proportional valve, which mainly aims to reduce the vacuum intensity by utilizing a guide exhaust straight rod to match with a first vacuum breaking valve and a second vacuum breaking valve arranged in a body and regulate the vacuum intensity by using the first valve and the second valve which are also arranged in the body, thereby reducing the complex loop in the existing structure in turn, and precisely regulating the intensity of vacuum pressure and shortening the reaction time when the vacuum large-capacity electric control proportional valve is applied to vacuum regulation of the large-capacity electric control proportional valve by matching the opening and closing of the valves with the guide exhaust straight rod.

The invention relates to a vacuum high-capacity electric control proportional valve, which comprises: a valve base is connected with a middle valve seat and a guide seat from bottom to top in sequence to form a body, a main diaphragm is clamped between the guide seat and the valve seat to form a vacuum pressure cavity, an elastic component is arranged above the main diaphragm and connected with the guide seat, a guide exhaust straight rod with a vacuum valve set is embedded in the center of the main diaphragm, a main channel for general use of primary side pressure and secondary side pressure flow is arranged in the body, the main channel is further communicated with a guide channel and a feedback channel, a vacuum piezoelectric solenoid valve for controlling the opening and closing of the guide channel, an atmospheric solenoid valve and a sensor for detecting the feedback channel are arranged above the guide seat, an adjusting channel is arranged in the guide seat and communicated with the upper part of the vacuum pressure cavity, two ends of the adjusting channel are respectively connected with the vacuum piezoelectric solenoid valve and the atmospheric solenoid valve, and an atmospheric pilot channel is arranged in the middle valve seat and communicated with the lower space of the main diaphragm, for use with an atmospheric pressure stream;

when the primary side pressure is matched with the vacuum piezoelectric solenoid valve through the guide channel to generate vacuum pressure to flow into the vacuum pressure cavity, the adjusting channel is closed, so that the main diaphragm in the vacuum pressure cavity is restored to the horizontal position to form a stable pressure state, the guide exhaust straight rod is matched with the upper part of the middle valve seat to form a first vacuum destruction valve, the upper part of the vacuum valve group is matched with the inner wall of an upper valve in the valve base to form a second vacuum destruction valve, external atmospheric pressure can be introduced from an atmospheric port of the atmospheric solenoid valve to push the first vacuum destruction valve and the second vacuum destruction valve, so that the intensity of vacuum in the body is adjusted and reduced more rapidly, and the reaction time for reducing vacuum adsorption is shortened;

the valve base is internally provided with a straight rod embedding seat, the straight rod embedding seat is matched with the lower part of the guide exhaust straight rod to form a first valve, when the vacuum solenoid valve continuously operates to generate vacuum pressure, the first valve can be driven to be opened, the primary side pressure forms secondary side pressure through a secondary channel, a second valve is formed on the lower valve inner wall below the vacuum valve group and matched with the inner part of the valve base, the secondary side pressure can be accelerated and led into the secondary side pressure by the second valve, and the second valve can drive a third valve to be opened and closed together, so that the vacuum strength in the body is adjusted and raised more rapidly.

Further, the elastic component is a spring.

Further, the vacuum valve group is composed of: the two convex parts are formed by matching convex surfaces with a spring oppositely, the inner part of the convex part is designed to be through, the pilot exhaust straight rod can be arranged in the convex part, and the upper part and the lower part of the lateral edge of the pilot exhaust straight rod are respectively provided with a limiting convex catch to limit the displacement stroke of the pilot exhaust straight rod.

Compared with the prior art, the vacuum large-capacity electronic control proportional valve provided by the embodiment of the invention can effectively shorten the reaction time of vacuum adsorption, so that the purposes of energy conservation and precise adjustment of vacuum strength can be achieved.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a perspective view from another perspective of the present invention.

Fig. 3 is a schematic diagram of the circuit of the present invention.

Fig. 4 is a schematic diagram of the present invention in a ready state.

Fig. 5 is a schematic diagram of the structure of the present invention in the steady state.

Fig. 6 is a schematic diagram of the first stage of the vacuum level adjustment of the present invention.

Fig. 7 is a partially enlarged schematic view of fig. 6.

FIG. 8 is a second schematic diagram of the present invention in a vacuum state.

Fig. 9 is a partially enlarged schematic view of fig. 8.

FIG. 10 is a first schematic illustration of the present invention in vacuum condition lift.

Fig. 11 is a partially enlarged schematic view of fig. 10.

FIG. 12 is a schematic diagram of a second stage of the vacuum conditioning of the present invention.

Fig. 13 is a partially enlarged schematic view of fig. 12.

Fig. 14 is a schematic diagram of the prior art.

Description of reference numerals:

10

Valve seat

111.. upper valve inner wall

112

Atmospheric channel

Middle valve seat

A pilot atmospheric channel

A guide seat

A vacuum solenoid valve

An atmospheric solenoid valve

1321

A sensor

Adjusting the channel

Main diaphragm

An elastic assembly

Guide exhaust straight rod

A first vacuum break valve

Vacuum valve set

A second vacuum break valve

Male member 222

Spring 223

224

Vacuum pressure chamber

Main channel 30

A guide channel

Feedback channel

A secondary channel

Straight rod embedding seat

A first valve

A second valve

A third valve

A

Setting hole

V. vacuum hole

P1

P2

PP.. atmospheric pressure

PT.. vacuum pressure

P

PR.

PI.. force signal

PS.. pressure representation

PO.. output signal

Setting a hole

92. vacuum hole

93.. atmospheric vent

Detailed Description

In general, the best possible embodiment, in accordance with the present invention, is described in detail with reference to FIGS. 1-4 to enhance understanding of the present invention;

the invention provides a vacuum large-capacity electronic control proportional valve, which structurally comprises: a main body 10, which is composed of a valve base 11 sequentially connected with a middle valve seat 12 and a guide seat 13 from bottom to top, a main diaphragm 20 is clamped between the guide seat 13 and the middle valve seat 12 to form a vacuum pressure cavity 23, an elastic component 201 is arranged above the main diaphragm 20 and connected with the guide seat 13, a guide exhaust straight rod 21 with a vacuum valve group 22 is embedded in the center of the main diaphragm 20, and the vacuum valve group 22 mainly comprises: the two convex parts 222 are respectively formed by matching a spring 223 with a convex surface oppositely, the interior of the convex part 222 is designed to be through, the guide exhaust straight rod 21 can be arranged in the convex part, and the upper part and the lower part of the side edge of the guide exhaust straight rod 21 are respectively provided with a limit convex hook 224 so as to limit the stroke of the up-and-down displacement action of the guide exhaust straight rod 21;

the main body 10 further has a main channel 30 for providing a common flow of the primary pressure P1 and the secondary pressure P2, the main channel 30 is further communicated with a guiding channel 31 and a feedback channel 32, a vacuum solenoid valve 131 for controlling the opening and closing of the guiding channel 31, an atmospheric solenoid valve 132, and a sensor 133 for detecting the feedback channel 32 are further disposed above the guiding seat 13, an adjusting channel 134 is further disposed in the guiding seat 13 and communicated to the upper side of the vacuum pressure chamber 23, and two ends of the adjusting channel 134 are further connected to the vacuum solenoid valve 131 and the atmospheric solenoid valve 132 respectively;

a pilot atmospheric channel 121, which is disposed in the middle valve seat 12 and connected to the space below the main diaphragm 20 for the circulation of atmospheric pressure PP, when the primary pressure P1 passes through the pilot channel 31 and cooperates with the vacuum solenoid valve 131 to generate a vacuum pressure PT flowing into the vacuum pressure chamber 23, the adjustment channel 134 is closed, so that the main diaphragm 20 in the vacuum pressure chamber 23 returns to the horizontal position to form a pressure-stabilized state;

the leading exhaust straight rod 21 is provided with a first vacuum breaker valve 211 above the middle valve seat 12, and a second vacuum breaker valve 221 is provided above the vacuum valve set 22 and matched with an upper valve inner wall 111 inside the valve base 11, so that external atmospheric pressure PP can be introduced through an atmospheric port 1321 of the atmospheric solenoid valve 132 to push the first vacuum breaker valve 211 and the second vacuum breaker valve 221, so that the adjustment and reduction range of the internal vacuum of the body 10 is more rapid, and the reaction time of reducing vacuum adsorption is shortened;

the valve base 11 is provided with a straight rod insert seat 40, the straight rod insert seat 40 cooperates with the lower portion of the pilot exhaust straight rod 21 to form a first valve 41, when the vacuum pressure solenoid valve 131 continuously operates to generate vacuum pressure PT, the first valve 41 can be driven to open, so that the primary pressure P1 forms a secondary pressure P2 through a secondary channel 33, the vacuum strength is adjusted to a first level, and a second valve 42 is formed below the vacuum valve group 22 and cooperates with a lower valve inner wall 112 inside the valve base 11, the second valve 42 can accelerate the primary pressure P1 to the secondary pressure P2, so that the vacuum strength is adjusted to a second level, and the vacuum adjustment range inside the body 10 is more rapid.

Referring to fig. 1 to 2, it can be seen that the connection ends of the main body 10 respectively adsorb a set hole O of an object, a vacuum hole V connected to a vacuum pump, and an atmospheric hole a for adjusting atmospheric pressure, and through the design of the internal structure, after the connection of the pipelines for testing, the pipelines directly enter the set hole O to the vacuum hole V and directly exit the vacuum hole V, and the special way of 90 degrees rotation of the structure in the prior art is not required for testing, so that the inconvenience of complicated and repeated testing work can be improved;

referring to fig. 3, it can be seen that the vacuum solenoid valve 131, the atmospheric solenoid valve 132, and the sensor 133 are mainly driven by a power supply PR through a control loop P, and after a force input signal PI and a force output signal PO are set, the display related pressure representation PS of the control loop P is used to drive the vacuum solenoid valve 131 and the atmospheric solenoid valve 132, and the sensor 133 is mainly used to detect the vacuum pressure of the secondary pressure P2, and when the vacuum pressure exceeds or is lower than the set value of the secondary pressure P2, the sensor is used to feed back information to the control loop P to perform the discrimination between the vacuum solenoid valve 131 and the atmospheric solenoid valve 132, and drive the subsequent related control actions through the control loop P, and this part of operations is a common means, and therefore will not be described again;

referring to fig. 4, when the present invention is in the ready state, it can be seen that the vacuum solenoid valve 131 and the atmospheric solenoid valve 132 are both in the non-activated state, the first valve 41 and the second valve 42 in the main channel 30 are also closed, and a part of atmospheric pressure PP flows to the lower side of the main diaphragm 20 in the pilot atmospheric channel 121, but the main diaphragm 20 is pre-compressed by the elastic component 201 above, so that the main diaphragm 20 is kept below the horizontal level, and the atmospheric pressure PP can flow to the secondary side pressure P2 through the first vacuum breaking valve 211, and the secondary side pressure P2 is equal to the atmospheric pressure PP, where the level is described by using the two ends of the main diaphragm 20 as a reference, and comparing the center of the main diaphragm 20 with the reference of the two ends.

Referring to fig. 5, in order to maintain a stable pressure state, when the vacuum suction is achieved, the sensor 133 transmits related information to the control circuit P, and then the vacuum solenoid valve 131 is closed, and the vacuum pressure PT in the vacuum pressure chamber 23 and the adjusting channel 134 is kept stable, and at this time, the elastic element 201 and the atmospheric pressure PP entering from the first atmospheric channel 121 mutually press the main diaphragm 20, so that the main diaphragm 20 is restored to the horizontal state, thereby maintaining the internal vacuum of the whole body 10.

Referring to fig. 6 to 7, in the first stage of the vacuum level-adjusting state, firstly, it can be seen that the atmospheric solenoid valve 132 is opened, external atmospheric pressure PP is introduced from an atmospheric port 1321 and enters the vacuum pressure chamber 23 through the adjusting channel 134, the main diaphragm 20 which originally keeps horizontal is displaced downward, the first vacuum breaking valve 211 is gradually opened, and the atmospheric pressure PP in the pilot atmospheric channel 121 is allowed to pass through the first vacuum breaking valve 211 downward along the pilot straight exhaust rod 21, so as to adjust the first stage of the internal vacuum level-adjusting state.

Referring to fig. 8-9, in the second stage of the vacuum descending state, after the atmospheric pressure solenoid valve 132 is continuously opened, more atmospheric pressure PP is introduced into the atmospheric port 1321 to force the main diaphragm 20 to continuously move downward, the limit protrusion 224 of the pilot exhaust straight rod 21 pushes the second vacuum breaking valve 221 to open, at this time, the atmospheric channel 113 located below the second vacuum breaking valve 221 will provide more atmospheric pressure PP to enter, so that the amplitude of the internal vacuum descending is more rapid, when the main diaphragm 20 moves downward to the bottom of the vacuum pressure chamber 23, the flow rate of the atmospheric pressure PP entering the pilot atmospheric channel 121 will be reduced to the minimum, and the flow rate of the atmospheric pressure PP entering the atmospheric channel 121 will be increased to the maximum.

Referring to fig. 10 to 11, in the first stage of the vacuum pumping state, when the vacuum pressure solenoid valve 131 is opened, the primary pressure P1 will cooperate with the vacuum pressure solenoid valve 131 to flow into the vacuum pressure chamber 23 through the guide channel 31 and the adjustment channel 134 to form the vacuum pressure PT, which will also drive the main diaphragm 20 and the pilot exhaust straight rod 21 to move upward, and the first valve 41 will be opened at this time, so that the primary pressure P1 can form the secondary pressure P2 along the sub-channel 33 through the first valve 41, so as to raise the vacuum strength as the first stage.

Referring to fig. 12 to 13, the lower valve inner wall 112 further includes: a third valve 43 is disposed above the second valve 42, the third valve 43 can be synchronized with the opening and closing state of the second valve 42, when the vacuum solenoid valve 131 is continuously opened, the main diaphragm 20 will move upward to the top of the vacuum pressure chamber 23, and at this time, a second stage of vacuum lift-adjusting state is formed, and the pilot exhaust straight rod 21 will drive the convex member 222 below the vacuum valve set 22 to move upward in a linkage manner, so that the second valve 42 and the third valve 43 are synchronously opened, so that more primary pressure P1 flows to the secondary pressure P2, and lift-adjusting is performed at the second stage, so that the reaction time of vacuum strength lift-adjusting is further shortened.

In summary, the vacuum large-capacity electrically controlled proportional valve disclosed in the present invention cooperates with the designed pilot atmospheric channel 121 and the pilot exhaust straight rod 21, so that the external air can flow into the secondary pressure P2 for vacuum intensity reduction adjustment through the first vacuum breaking valve 211 and the second vacuum breaking valve 221, and further uses the pilot exhaust straight rod to cooperate with the vacuum valve set 22 for linkage, so that the first valve 41, the second valve 42, and the third valve 43 can accelerate the raising process of the vacuum intensity, so that the adjusted response time can be improved, and the valve is suitable for the electrically controlled proportional valve with larger capacity, and further, the problem of inconvenient test caused by the complicated ventilation loop in the prior art can be simplified.

The construction, features and functions of the present invention are described in detail in the embodiments illustrated in the drawings, which are only preferred embodiments of the present invention, but the present invention is not limited by the drawings, and all equivalent embodiments modified or changed according to the idea of the present invention should fall within the protection scope of the present invention without departing from the spirit of the present invention covered by the description and the drawings.

Claims

1. A vacuum high capacity electronically controlled proportional valve comprising:

a body (10) composed of a valve base (11) connected with a middle valve seat (12) and a guide seat (13) from bottom to top in sequence, a main diaphragm (20) is clamped between the guide seat (13) and the middle valve seat (12) to form a vacuum pressure cavity (23), an elastic component (201) is arranged above the main diaphragm (20) and connected with the guide seat (13), a guide exhaust straight rod (21) with a vacuum valve set (22) is embedded in the center of the main diaphragm (20), a main channel (30) which provides primary side pressure and secondary side pressure flow for general use is arranged in the body (10), the main channel (30) is also communicated with a guide channel (31) and a feedback channel (32), a vacuum piezoelectric solenoid valve (131) for controlling the opening and closing of the guide channel (31), an atmospheric solenoid valve (132) and a sensor (133) for detecting the feedback channel (32) are also arranged above the guide seat (13), an adjusting channel (134) is also arranged in the guide seat (13) and communicated to the upper part of the vacuum pressure cavity (23), and two ends of the adjusting channel (134) are respectively connected with the vacuum solenoid valve (131) and the atmospheric solenoid valve (132);

a pilot atmosphere channel (121) arranged in the middle valve seat (12) and communicated to the space below the main diaphragm (20) for the circulation of atmosphere pressure;

the method is characterized in that: when the primary pressure is matched with the vacuum pressure solenoid valve (131) through the guide passage (31) to generate a vacuum pressure to flow into the vacuum pressure chamber (23), the adjusting passage (134) is closed, so that the main diaphragm (20) in the vacuum pressure chamber (23) is restored to a horizontal position to form a pressure-stabilizing state; a first vacuum breaking valve (211) is formed above the pilot exhaust straight rod (21) and the middle valve seat (12), a second vacuum breaking valve (221) is formed above the vacuum valve group (22) and matched with an upper valve inner wall (111) in the valve base (11), and external atmospheric pressure can be introduced through an atmospheric port (1321) of the atmospheric solenoid valve (132) to push the first vacuum breaking valve (211) and the second vacuum breaking valve (221); a straight rod insert seat (40) is arranged in the valve base (11), the straight rod insert seat (40) is matched with the lower part of the pilot exhaust straight rod (21) to form a first valve (41), when the vacuum electromagnetic valve (131) continuously operates to generate vacuum pressure, the first valve (41) can be driven to be opened, the primary side pressure forms the secondary side pressure through a sub-channel (33), a second valve (42) is formed on a lower valve inner wall (112) in the valve base (11) matched with the lower part of the vacuum valve group (22), a third valve (43) is arranged above the second valve (42), the second valve (42) and the third valve (43) can be synchronously opened and closed, and the primary side pressure can be accelerated to be led into the secondary side pressure.

2. Vacuum high capacity electrically controlled proportional valve according to claim 1, wherein the elastic element (201) is a spring.

3. Vacuum high capacity electrically controlled proportioning valve according to claim 1, wherein the vacuum valve group (22) is formed by: the two convex parts (222) are formed by matching a spring (223) with convex surfaces oppositely, the inner part of the convex part (222) is designed to be through, the pilot exhaust straight rod (21) can be arranged in the convex part, and the upper part and the lower part of the side edge of the pilot exhaust straight rod (21) are respectively provided with a limiting convex stopper (224) so as to limit the stroke of the vertical displacement of the pilot exhaust straight rod (21).