TWM581173U - Vacuum large-capacity electric control proportional valve - Google Patents

Abstract

The utility model relates to a vacuum large-capacity electronically controlled proportional valve, which is composed of a valve base, a middle valve seat and a guiding seat. The body has a vacuum pressure chamber, and a main diaphragm is arranged in the vacuum pressure chamber, and the main diaphragm is provided with elasticity. The component is connected to the guiding seat, and a pilot exhaust straight rod having a vacuum valve group is embedded in the center of the main diaphragm, and a main channel is further disposed in the body, and the main channel is connected with a guiding channel and a feedback channel, and A vacuum pressure solenoid valve, an atmospheric pressure solenoid valve and an inductor are arranged above the guide seat, and an adjustment passage connecting the vacuum pressure chamber is further arranged in the guide seat, and a pilot air passage is arranged in the middle valve seat to connect to the main a space under the diaphragm; a first vacuum breaking valve is formed above the valve seat of the pilot exhaust straight rod, and a second vacuum breaking valve is formed on the inner wall of the upper valve of the valve valve base above the vacuum valve group, and can be at atmospheric pressure The electromagnetic valve is introduced into the external atmospheric pressure to push open and close the first vacuum breaking valve and the second vacuum breaking valve, so that the internal vacuum of the body is more rapidly reduced; and the valve base is provided with a straight rod insert to match the pilot exhaust straight The first valve is formed below, and when the vacuum pressure solenoid valve continues to operate, the first valve is opened, so that the primary side pressure forms a secondary side pressure through the auxiliary passage, and the lower valve inner wall of the valve valve base is formed under the vacuum valve group to form a second The valve has a third valve disposed above the second valve and can be opened and closed synchronously with the second valve, and can accelerate the primary side pressure to the secondary side pressure.

Description

Vacuum large capacity electronically controlled proportional valve

This creation is about a vacuum large-capacity electronically controlled proportional valve that is internally coupled with a pilot exhaust straight rod and a vacuum valve group to further introduce the atmospheric pressure into the pilot atmosphere channel, and to connect the primary side pressure with the secondary side pressure. The channel and the auxiliary channel enable the pilot exhaust straight rod to adjust the vacuum strength through the up and down displacement action, so that it can achieve energy saving and precise adjustment.

In the past, vacuum electronically controlled proportional valves widely used in the field of automation equipment, please refer to Figure 14, which usually has a conventional setting hole (91) for adsorbing objects, a conventional vacuum hole (92) for connecting a vacuum pump, and for adjustment. The vacuum pressure of the conventional atmospheric hole (93), usually when operated by a vacuum pump, draws a vacuum through the internal passage of the vacuum electronically controlled proportional valve to draw the pressure of the conventional set hole (91) and the fluid flow to the conventional vacuum hole (92), as shown in the figure. Arrow mark

When the vacuum electronically controlled proportional valve is in the test process, the operator has to undergo a long period of accumulated experience and repeated tests to produce a good vacuum electronically controlled proportional valve, but the circuit within the vacuum electronically controlled proportional valve structure is also relatively complicated. The vacuum air line for testing and the equipment need to be connected at a 90-degree angle. For the test operator, it is not possible to connect the vacuum air line and the equipment through the straight-in and straight-out assembly. More time and effort;

At present, the internal circuit of the vacuum electronically controlled proportional valve, if it is necessary to modify the internal pneumatic circuit, requires a lot of time and money to improve, although it can change the way of external vacuum pressure pipe connection, but also the cooperation of various parts. It is also necessary to test one by one, in which it is necessary to redesign the relevant vacuum-regulated parts if it is necessary to maintain the fine level of the original vacuum control, in the case of a vacuum electronically controlled proportional valve for larger capacity applications, the aforementioned pipe connection And the matching of parts will be more cumbersome; therefore, there are still many improvements.

This creation is a vacuum large-capacity electronically controlled proportional valve. Its main technical purpose is to use the pilot exhaust straight rod to match the first vacuum destruction valve and the second vacuum destruction valve in the body to reduce the vacuum strength. And the first valve and the second valve, which are also disposed in the body, are used to adjust the vacuum strength, thereby reducing the complex circuit inside the movable structure, and the pilot exhaust is opened and closed through the aforementioned valves. Straight rods allow precise adjustment of vacuum pressure and reaction time when applied to vacuum adjustment of large-capacity electronically controlled proportional valves.

The vacuum large-capacity electronically controlled proportional valve is composed of: a valve base sequentially connecting a middle valve seat and a guiding seat from bottom to top to form a body, and a main body is sandwiched between the guiding seat and the middle valve seat. a diaphragm is formed to form a vacuum pressure chamber, and an elastic element is disposed above the main diaphragm to connect the guiding seat, and a pilot exhaust straight rod having a vacuum valve group is embedded in the center of the main diaphragm, and the body has a primary inside a main passage common to the side pressure and the secondary side pressure flow, the main passage is further connected with a guiding passage and a feedback passage, and a vacuum pressure electromagnetic valve for controlling opening and closing of the guiding passage is disposed above the guiding seat, An atmospheric pressure solenoid valve, and a sensor for detecting the feedback passage, and an adjustment passage is connected to the vacuum pressure chamber in the guide seat, and the vacuum is respectively connected to the vacuum passage a solenoid valve and an atmospheric pressure solenoid valve, and a pilot air passage is disposed in the middle valve seat to connect to a space below the main diaphragm for supplying a common atmospheric pressure flow;

When the primary side pressure is operated by the guiding channel and the vacuum pressure solenoid valve, the vacuum pressure flows into the vacuum pressure chamber, and the adjusting channel is closed, so that the main diaphragm in the vacuum pressure chamber returns to the horizontal position to form a steady state. A pilot vacuum straight rod is formed with a first vacuum breaking valve formed above the middle valve seat, and a second vacuum breaking valve is formed on an inner wall of the upper valve valve inside the vacuum valve group, and the atmospheric pressure solenoid valve can be used The introduction of external atmospheric pressure by the atmospheric pressure pushes the first vacuum destruction valve and the second vacuum destruction valve, so that the intensity of the vacuum inside the body is reduced more rapidly, so as to shorten the reaction time for reducing vacuum adsorption;

The valve base is further provided with a straight rod inserting seat, and the straight rod inserting seat forms a first valve under the pilot exhaust straight rod. When the vacuum pressure solenoid valve continues to operate, a vacuum pressure is generated, which can drive the first valve to open. The primary side pressure is formed by a pair of passages to form a secondary side pressure, and a lower valve is formed under the vacuum valve group to fit the inner wall of the lower valve inside the valve base, and the second valve can accelerate the primary side pressure introduction To the secondary side pressure, and the second valve can also drive a third valve to open and close, so that the vacuum intensity inside the body is increased more rapidly.

Therefore, the vacuum large-capacity electronically controlled proportional valve can effectively shorten the reaction time of vacuum adsorption, so that it can achieve the purpose of energy saving and vacuum strength precision adjustment.

Generally, according to the present creation, the best feasible embodiment, together with the detailed description of Figures 1 to 4 of the drawing, adds to the understanding of the creation;

The utility model relates to a vacuum large-capacity electronically controlled proportional valve, which comprises: a body (10), which is connected by a valve base (11) from bottom to top with a middle valve seat (12) and a guiding seat. (13) constituting, and a main diaphragm (20) is interposed between the guiding seat (13) and the middle valve seat (12) to form a vacuum pressure chamber (23), and an elastic layer is arranged above the main diaphragm (20). The component (201) is coupled to the guiding seat (13), and a pilot exhaust straight rod (21) having a vacuum valve group (22) is embedded in the center of the main diaphragm (20). The vacuum valve group (22) is mainly The two convex members (222) are respectively formed by a convex surface facing a spring (223), and the convex member (222) has a through-design inside, and the pilot exhaust straight rod (21) can be disposed therein, and The pilot exhaust straight rod (21) is provided with a limiting cam (224) at the upper and lower sides of the side edge, so as to limit the stroke of the pilot exhaust straight rod (21) in the up and down displacement action;

The main body (10) further has a main passage (30) for providing primary side pressure (P1) and secondary side pressure (P2) flow, and the main passage (30) is further connected with a guide passage (31) and a return. a channel (32), a vacuum pressure solenoid valve (131) for controlling the guiding channel (31), a one-pressure solenoid valve (132), and a detection mechanism for detecting the feedback (13) a sensor (133) of the channel (32), wherein the guiding seat (13) is further provided with an adjusting channel (134) connected to the vacuum pressure chamber (23), the adjusting channel (134) Further connecting the vacuum pressure solenoid valve (131) and the atmospheric pressure solenoid valve (132);

A pilot air channel (121) is disposed in the middle valve seat (12) to connect to a space below the main diaphragm (20) for circulating an atmospheric pressure (PP) when the primary side pressure (P1) passes through the guiding channel ( 32) cooperate with the vacuum pressure solenoid valve (131) to generate a vacuum pressure (PT) flow into the vacuum pressure chamber (23), and the adjustment passage (134) is closed to make the main diaphragm in the vacuum pressure chamber (23) (20) After returning to the horizontal position, a steady state is formed;

The pilot exhaust straight rod (21) is located above the middle valve seat (12) and is provided with a first vacuum breaking valve (211), and the vacuum valve group (22) is fitted above an upper valve inside the valve base (11). The wall (111) is further provided with a second vacuum breaking valve (221), which can push the first vacuum breaking valve (211) by introducing an external atmospheric pressure (PP) to an atmospheric port (1321) of the atmospheric pressure solenoid valve (132), and The second vacuum destroying valve (221) causes the internal vacuum of the body (10) to be more rapidly adjusted to shorten the reaction time for reducing vacuum adsorption;

The valve base (11) is further provided with a straight rod insert (40), and the straight rod insert (40) cooperates with the pilot exhaust straight rod (21) to form a first valve (41), when the vacuum is pressed The solenoid valve (131) continuously operates to generate a vacuum pressure (PT), which can drive the first valve (41) to open, so that the primary side pressure (P1) forms a secondary side pressure (P2) through a pair of passages (33), and the vacuum strength is The first section is raised, and the lower valve inner wall (112) inside the valve valve base (11) is formed with a second valve (42) under the vacuum valve group (22), and the second valve (42) can be used for the primary side. The pressure (P1) is accelerated into the secondary side pressure (P2), and the vacuum strength is accelerated in the second stage. The true air conditioner inside the body (10) is increased more rapidly.

Referring to Figures 1 and 2 of the figure, the connecting end of the main body (10) can be seen, which respectively adsorbs a setting hole (O) of the object, a vacuum hole (V) connected to the vacuum pump, and an atmospheric hole for adjusting the atmospheric pressure ( A) Through the design of the internal structure, after the test pipeline is connected, change the setting hole (O) straight into the vacuum hole (V) straight out, do not need to test in a special way of 90 degrees of the conventional structure, making it cumbersome The inconvenience of repeating the test work can be improved;

Referring to Figure 3, you can see the vacuum pressure solenoid valve (131), the atmospheric pressure solenoid valve (132), and the sensor (133), which are mainly driven by a control circuit (P) via a power supply (PR). After the good input signal (PI) and the output signal (PO), the display pressure (PS) is displayed through the control circuit (P), thereby driving the vacuum pressure solenoid valve (131) and the atmospheric pressure solenoid valve (132), and sensing The device (133) is mainly used to detect the vacuum pressure of the secondary side pressure (P2). When it exceeds or falls below the set value of the secondary side pressure (P2), it is used to feed back information to the control circuit (P) for vacuum. The discriminating between the pressure solenoid valve (131) and the atmospheric pressure solenoid valve (132), and driving the subsequent related control actions through the control loop (P), this part of the manipulation is a common commonly used means, so it will not be described again;

Referring to Figure 4 of the drawing, when the creation is in the ready state, it can be seen that the vacuum pressure solenoid valve (131) and the atmospheric pressure solenoid valve (132) are both in an unactivated state, and the first valve in the main passage (30) (41) And the second valve (42) is also closed, while the pilot atmosphere channel (121) has a partial atmospheric pressure (PP) flowing under the main diaphragm (20), but the main diaphragm (20) is subjected to the upper elastic element (201) The elastic preloading maintains the main diaphragm (20) below the level, allowing the atmospheric pressure (PP) to flow to the secondary side pressure (P2) via the first vacuum destruction valve (211), at which time the secondary side pressure (P2) is equal to atmospheric pressure (PP), and the level described here is based on the ends of the main diaphragm (20), and then the comparison is made with the center of the main diaphragm (20) and the reference of both ends.

Referring to Figure 5 of the figure, it is a regulated state. When the vacuum adsorption purpose is achieved, the sensor (133) transmits relevant information to the control loop (P), thereby closing the vacuum pressure solenoid valve (131). The vacuum pressure (PT) in the vacuum pressure chamber (23) and the adjustment passage (134) is kept stable, and the elastic member (201) at this time also interacts with the atmospheric pressure (PP) entering from the pilot atmospheric passage (121). The main diaphragm (20) is pressed against the main diaphragm (20) to restore the internal vacuum of the body (10) as a whole.

Please refer to Figures 6 to 7 of the figure, which is the first stage of the true air conditioning drop state. First, the atmospheric pressure solenoid valve (132) can be opened, and the external atmospheric pressure (PP) is adjusted from an atmospheric port (1321). (134) Entering the vacuum pressure chamber (23), the main diaphragm (20) which is originally kept horizontal is displaced downward, and gradually the first vacuum breaking valve (211) is opened to make the atmospheric pressure in the pilot atmospheric passage (121) The force (PP) is passed down the pilot exhaust straight rod (21) through the first vacuum break valve (211) to adjust the first stage of the internal vacuum strength.

Please refer to the figure 8-9, which is the second stage of the true air conditioning drop state. When the atmospheric pressure solenoid valve (132) is continuously opened, the atmospheric port (1321) will introduce more atmospheric pressure (PP). The main diaphragm (20) is continuously displaced downward, and the limiting ram (224) of the pilot exhaust straight rod (21) will push the second vacuum breaking valve (221) to open, and the second vacuum breaking valve is located at this time. (221) The lower atmospheric channel (113) will provide more atmospheric pressure (PP) entry, allowing the internal true air conditioner to drop more quickly as the main diaphragm (20) goes down to the vacuum pressure chamber (23). At the bottom, the atmospheric pressure (PP) flow entering the pilot atmosphere channel (121) is minimized, and the atmospheric pressure (PP) flow entering the atmospheric channel (121) is also maximized.

Referring to Figures 10 to 11 of the figure, it is the first stage of the true air conditioning state. When the vacuum pressure solenoid valve (131) is opened, the primary side pressure (P1) is matched with the vacuum pressure solenoid valve (131). The guiding channel (31) and the adjusting channel (134) flow into the vacuum pressure chamber (23) to form a vacuum pressure (PT), which also drives the main diaphragm (20) and the pilot exhaust straight rod (21) to be displaced upward. At this time, the first valve (41) will also be opened, so that the primary side pressure (P1) can form a secondary side pressure (P2) along the secondary passage (33) through the first valve (41), so that the vacuum strength is made. A period of upswing.

Referring to Figures 12-13, the lower valve inner wall (112) further includes a third valve (43) disposed above the second valve (42), the third valve (43) mainly It can cooperate with the opening and closing state of the second valve (42), and when the vacuum pressure solenoid valve (131) is continuously opened, the main diaphragm (20) will be displaced upward to the top of the vacuum pressure chamber (23), and the true shape is formed at this time. The second section of the air conditioning ascending state, and the pilot exhaust straight rod (21) will drive the convex member (222) under the vacuum valve group (22) to move upwardly, so that the second valve (42) and the third valve ( 43) Simultaneously open, so that more primary side pressure (P1) flows to the secondary side pressure (P2), and the second stage is raised, so that the reaction time of the vacuum intensity increase is further shortened.

In summary, the vacuum large-capacity electronically controlled proportional valve is matched by the designed pilot atmosphere channel (121) and the pilot exhaust straight rod (21), so that the external air is destroyed by the first vacuum valve (211). The second vacuum breaks the valve (221), and can flow into the secondary side pressure (P2) to adjust the vacuum strength, and further applies the pilot exhaust straight rod to cooperate with the vacuum valve group (22) to make the first valve (41) and the second valve. The valve (42) and the third valve (43) can accelerate the process of increasing the vacuum strength, so that the adjusted reaction time can be improved and is suitable for a larger capacity electronically controlled proportional valve, which simplifies the test of the complicated ventilation circuit. Inconvenience.

(10) ‧‧‧ Ontology  (11)‧‧‧Valve base  (111)‧‧‧Upper valve inner wall  (112) ‧‧‧ Lower valve inner wall  (113)‧‧‧Atmospheric passage  (12) ‧‧‧中座  (121) ‧‧‧Leading atmospheric passage  (13) ‧‧‧Guide  (131)‧‧‧Vacuum pressure solenoid valve  (132)‧‧‧Atmospheric pressure solenoid valve  (1321)‧‧‧ atmosphere  (133)‧‧‧ Sensors  (134)‧‧‧Adjustment channel  (20)‧‧‧Main diaphragm  (201)‧‧‧Flexural components  (21)‧‧‧ pilot exhaust straight rod  (211)‧‧‧First vacuum break valve  (22)‧‧‧Vacuum valve group  (221)‧‧‧Second vacuum break valve  (222)‧‧‧Shaped parts  (223) ‧ ‧ spring  (224)‧‧‧Limited convex  (23)‧‧‧ Vacuum pressure chamber  (30) ‧‧‧ main channel  (31)‧‧‧ Guide channel  (32) ‧‧‧Return channel  (33) ‧‧‧Subchannel  (40)‧‧‧ Straight rod inserts  (41)‧‧‧First valve  (42)‧‧‧Second valve  (43) ‧ ‧ third valve  (A) ‧ ‧ atmospheric holes  (O)‧‧‧Setting holes  (V) ‧ ‧ vacuum holes  (P1) ‧ ‧ primary side pressure  (P2) ‧ ‧ secondary side pressure  (PP) ‧ ‧ atmospheric pressure  (PT) ‧ ‧ vacuum pressure  (P)‧‧‧Control loop  (PR)‧‧‧Power  (PI)‧‧‧ Input Signal  (PS) ‧ ‧ pressure indication  (PO) ‧ ‧ output signal  (91)‧‧‧Use setting hole  (92) ‧ ‧ custom vacuum holes  (93) ‧ ‧ Customized atmospheric holes  

[Fig. 1] is a perspective view of the creation.  [Fig. 2] is a perspective view of another creation from another perspective.  [Fig. 3] is a schematic diagram of the circuit of the creation.  [Fig. 4] is a schematic diagram of the structure of the creation in the preparation state.  [Fig. 5] is a schematic diagram of the structure created in the steady state.  [Fig. 6] is the first schematic diagram of the creation of the vacuum state reduction.  [Fig. 7] is a partially enlarged schematic view of the creation of Fig. 6.  [Fig. 8] is a schematic diagram of the second stage of the creation of the vacuum state.  [Fig. 9] is a partially enlarged schematic view of the creation of Fig. 8.  [Fig. 10] is the first schematic diagram of the creation of the vacuum state.  [Fig. 11] is a partially enlarged schematic view of the creation of Fig. 10.  [Fig. 12] is a schematic diagram of the second stage of the creation of the vacuum state.  [Fig. 13] is a partially enlarged schematic view of the creation of Fig. 12.  [Fig. 14] is a schematic diagram of a conventional technique.  

Claims (3)

A vacuum large capacity electronically controlled proportional valve comprising:  A body (10) is formed by a valve base (11) sequentially connecting a middle valve seat (12) and a guiding seat (13) from bottom to top, and the guiding seat (13) and the A main diaphragm (20) is interposed between the central valve seat (12) to form a vacuum pressure chamber (23), and an elastic element (201) is disposed above the main diaphragm (20) to connect the guiding seat (13). A pilot exhaust straight rod (21) having a vacuum valve group (22) is disposed in the center of the main diaphragm (20), and the main body (10) has a primary side pressure (P1) and a secondary side pressure (P2) flow. A main channel (30) is used. The main channel (30) is further connected with a guiding channel (31) and a feedback channel (32). The guiding seat (13) is further provided with a guiding channel (31). a vacuum pressure solenoid valve (131), an atmospheric pressure solenoid valve (132), and a sensor (133) for detecting the feedback passage (32), the guide seat (13) is further provided An adjustment passage (134) is connected to the vacuum pressure chamber (23), the adjustment passage (134) is further connected to the vacuum pressure solenoid valve (131) and the atmospheric pressure solenoid valve (132);  a pilot atmosphere channel (121) disposed in the middle valve seat (12) to connect to a space below the main diaphragm (20) for circulating an atmospheric pressure (PP);  The utility model is characterized in that when the primary side pressure (P1) is operated by the guiding passage (32) and the vacuum pressure electromagnetic valve (131), a vacuum pressure (PT) flows into the vacuum pressure chamber (23), and the adjustment is performed. The passage (134) is closed to restore the main diaphragm (20) in the vacuum pressure chamber (23) to a horizontal position to form a steady state; the pilot exhaust straight rod (21) cooperates with the middle valve seat (12) a first vacuum destruction valve (211) is formed above, and a second vacuum destruction valve (221) is formed on the upper valve inner wall (111) of the valve valve base (11) above the vacuum valve group (22). The first vacuum breaking valve (211) and the second vacuum breaking valve (221) can be pushed to the outside air pressure (PP) by an atmospheric port (1321) of the atmospheric pressure solenoid valve (132) to make the body (10) The internal vacuum intensity is adjusted more rapidly to shorten the reaction time for reducing vacuum adsorption; and the valve base (11) is additionally provided with a straight rod insert (40), and the straight rod insert (40) fits A first valve (41) is formed under the pilot exhaust straight rod (21), and when the vacuum pressure solenoid valve (131) is continuously operated, a vacuum pressure (PT) is generated, and the belt can be brought. The first valve (41) is opened, so that the primary side pressure (P1) forms the secondary side pressure (P2) via a pair of passages (33), and the vacuum valve group (22) is fitted under the valve base (11) The inner valve inner wall (112) is formed with a second valve (42), and a third valve (43) is disposed above the second valve (42), the second valve (42) and the third The valve (43) can be synchronously opened and closed, and the primary side pressure (P1) can be acceleratedly introduced to the secondary side pressure (P2), so that the true air conditioner inside the body (10) can be increased more rapidly.   The vacuum large-capacity electronically controlled proportional valve according to claim 1, wherein the elastic member (201) is a spring. The vacuum large-capacity electronically controlled proportional valve according to claim 1, wherein the vacuum valve group (22) is composed of: two convex members (222) which are convexly opposed to a spring (223), and the convex portion The inside of the profile (222) is a through-through design, and the pilot exhaust straight rod (21) can be disposed therein, and the pilot exhaust straight rod (21) is provided with a limiting cam on each of the upper and lower sides of the side edge (224). ), by which the stroke of the pilot exhaust straight rod (21) can be limited.