TWM561159U - Vacuum energy-saving and large-capacity precision pressure regulating valve - Google Patents

Abstract

The utility model relates to a vacuum energy-saving large-capacity precision pressure regulating valve, which is composed of a main valve, a middle valve seat and a pressure regulating seat from bottom to top, and a main valve is provided with a primary side pressure and a secondary side pressure circulation. a main passage, and a valve piston is disposed in the center of the main valve to form a valve port, the inside of the valve piston is pivotally connected with a sealing straight rod connected to the main diaphragm, and the main diaphragm is clamped to the middle valve A vacuum pressure chamber is formed between the seat and the main valve, and a balance diaphragm and an atmospheric passage are interposed between the middle valve seat and the pressure regulating seat, and the atmospheric passage is connected to the space below the balance diaphragm. The atmospheric pressure is circulated, and a guiding passage is connected to the vacuum pressure chamber and the main passage through a feedback passage; when the primary side pressure is passed through the guiding passage to the vacuum pressure chamber, a vacuum suction is synchronously generated, so that the main diaphragm can be linked upward. The valve piston opens the valve port and forms a secondary side pressure to balance the pressure difference through the orifice of the feedback passage, and then flows into the pressure regulating seat to push back the balance diaphragm and the pressure regulating straight rod, so that the guiding passage is closed. After the main diaphragm is no longer removed, Under the balanced steady state, the valve seat and the body can achieve precise adjustment of vacuum pressure and energy saving under the flow without suction atmospheric pressure.

Description

Vacuum energy-saving large-capacity precision pressure regulating valve

The present invention relates to a vacuum energy-saving large-capacity precision pressure regulating valve, wherein the main body is provided with a main passage, a guiding passage, a feedback passage, and an atmospheric passage, and is connected to the vacuum pressure chamber through the foregoing passages, so as to be disposed in the vacuum pressure chamber The main diaphragm in the vacuum pressure chamber can cooperate with the orifice to balance the pressure difference, and the balance channel can drive the balance diaphragm to move, so that the body can adjust the pressure in a large range, without inhalation atmospheric pressure. Under the flow, it also has the purpose of energy saving and precise adjustment of vacuum pressure.

In the past, the vacuum precision pressure regulating valve widely used in the field of automation equipment, whether it is selling products in the domestic and foreign markets, in terms of the type of technical application, it is necessary to continuously inhale the atmosphere to maintain the vacuum pressure accuracy of the pressure regulating valve. Types of vacuum precision pressure regulating valves, which inevitably allow the pressure fluid to continuously draw in the external air flow. Although the intended goal can be achieved, the resources consumed by the process will increase the overall manufacturing cost under long-term use. The cumulative amount will be very substantial. Therefore, in order to improve the precision and efficiency of the automated processing process, some operators have exchanged high-precision output pressure by reducing the suction air flow rate through the pneumatic circuit, but it is not easy to manufacture vacuum precision pressure regulating valve design. There is a tendency to be complicated in design and production, so there are still many improvements;

This creator was in the previous authoring structure, for example:

China's Republic of China patent M513295, axial-guided vacuum pressure reducing valve, the main diaphragm and the straight rod provided in the structure, the guide hole is provided through the inside of the straight rod, so that the gas flowing inside can shorten the path to reduce the The number of parts consumed and the assembly steps; however, after the actual production and application of the guiding hole structure, the path of the gas can be shortened, the number of parts and the assembly steps are reduced, but in the process of implementation, the main diaphragm and the straight rod are Operation is still limited by the flow rate at which atmospheric pressure must be drawn, and the gas flow and vacuum pressure accuracy are partially retarded.

The Republic of China patent M532528, energy-saving vacuum precision pressure regulating valve, the several channels in the structure, can allow the pressure fluid to stabilize the pressure inside the body by matching the main valve port and the straight valve port, so that it does not need to be utilized. The atmospheric suction flow rate can be balanced, and the pressure regulator can be precisely adjusted to improve the use efficiency; the straight valve port is offset by the upper balance diaphragm, and when the pressure is adjusted, the piston can be used. If the area to be adsorbed is too large, it will affect that the equilibrium membrane is adsorbed downward and cannot be returned to the original state, and the operation of the gas circulation instability is caused.

In addition to the improvement of the foregoing structure, although the design of the simplified part is improved to improve the assembly and the complicated design, the pressure fluid is generated by the improved internal passage to generate the equal pressure, so that the energy loss can be made by feedback. Significantly reduced, although it has certain effects, but the improvement of vacuum pressure accuracy is not excellent, and there is still a lack of smooth operation in the operation. It is known after the actual application and research by the above structure, so there are some shortcomings that must be improved. .

This creation is a kind of vacuum energy-saving large-capacity precision pressure regulating valve. Its main technical purpose is to use the main diaphragm to connect the sealing straight rod to be set in the valve piston, so that the main diaphragm can be smoothly absorbed by the vacuum. Drive the valve piston to open and close the valve port;

The secondary technical purpose is to reduce the area of adsorption between the balanced diaphragms by adjusting the actuating push rod between the straightening rod and the balancing diaphragm, thereby improving the actuation of the push rod by vacuum suction and not returning. Happening;

The technical purpose again is that the valve piston is open to the valve port, and the upper and lower sides of the main diaphragm will maintain an equilibrium state of vacuum suction, so that the flow rate through which the valve port can pass is maximized;

The vacuum energy-saving large-capacity precision pressure regulating valve is composed of a main valve, a middle valve seat and a pressure regulating seat, which are sequentially connected from bottom to top, and the main valve has a primary side pressure and a secondary side pressure circulation. a main passage, and a valve port formed by a valve piston disposed at a center of the main valve seat, the valve piston is internally connected with a sealing straight rod having a main diaphragm, and the bottom end of the valve piston is further provided with The sealing main pipe is connected to the piston overflow hole, and the main diaphragm is formed by the central valve seat and the main valve clamp to form a vacuum pressure chamber, and the pressure regulating seat is balanced with the middle valve seat. The diaphragm is positioned, and a pressure regulating straight rod is disposed under the balance diaphragm, and the pressure regulating straight rod is disposed in the central chamber of the central valve seat; a guiding passage is passed through the main passage through the main chamber Up to the vacuum pressure chamber; an atmospheric passage is disposed in the middle valve seat and is connected to the space below the balance diaphragm to allow atmospheric pressure to flow;

And a feedback channel is formed by the connection under the valve seat to the inside of the pressure regulating seat, and the feedback channel is also connected to the main channel, and when the primary side pressure passes through the guiding channel to the vacuum pressure chamber, a vacuum suction is generated. The main diaphragm can be connected to the valve port to be opened upward, and the vacuum suction is synchronously formed to balance the pressure difference of the orifice in the feedback channel, and then continue to flow to the pressure regulating seat to push back the balance film. The sheet and the pressure regulating straight rod make the guiding passage closed. When the main diaphragm is no longer moved, in a balanced and stable state, the valve seat and the body can still achieve precise adjustment pressure under the flow without the suction atmospheric pressure. And the purpose of saving energy.

Generally, according to the present creation, the best feasible embodiment, together with the detailed description of Figures 1 to 6 of the drawing, adds to the understanding of the creation;

The present invention is a vacuum energy-saving large-capacity precision pressure regulating valve, and the structure comprises: a body (10), which is composed of a main valve (20), a middle valve seat (30), and a pressure regulating seat (40). The bottom-up connection is integrally formed with a screw locking group, and the main valve (20) has a main passage (201) capable of circulating the primary side pressure (P1) and the secondary side pressure (P2), and a valve The piston (24) is disposed at a valve port (25) formed in the center of the main valve (20), wherein the primary side pressure (P1) is a vacuum source suction, and the valve piston (24) has a connection and a connection therein. A sealing straight rod (231) of the main diaphragm (23) is pivotally connected, and a bottom end of the valve piston (24) cooperates with the sealing straight rod (231) to form a piston overflow hole (241) of the adjustable switch, The piston overflow hole (241) is pivotally adjusted to adjust the gap distance between the hole and the bottom of the valve piston (24) to control the inflow of the external atmosphere, and the main diaphragm (23) is received by the central valve seat (30). a vacuum pressure chamber (26) is formed with the body (10), and a balance diaphragm (43) is positioned between the pressure regulator (40) and the middle valve seat (30), and the balance film is disposed. Under the film (43) A pressure regulating straight rod (32) is in abutting contact, and the pressure regulating straight rod (32) is mainly disposed in a central chamber (301) of the middle valve seat (30), the balance diaphragm (43) and the An actuating push rod (44) is further disposed between the pressure regulating straight rods (32), and the actuating push rod (44) can minimize the adsorption area of the pressure regulating straight rod (32) and absorb the vacuum suction force (PT). The force is also minimized, so that the balance diaphragm (43) can be prevented from being adsorbed to the middle valve seat (30) by the vacuum;

a guiding passage (21), the range of which is from the main passage (201) through the chamber (301) to the inside of the vacuum pressure chamber (26); and the other feedback passage (22), the range is determined by the The lower seat of the middle valve seat (30) is connected to the inside of the pressure regulating seat (40), and the feedback passage (22) is also connected to the main passage (201); an atmospheric passage (33) is disposed at the middle seat (30) internal, the range is connected from the outer side of the middle valve seat (30) to the space below the balance diaphragm (43), so that atmospheric pressure (PP) can be circulated for controlling the pressure regulating straight rod (32) Acting;

Referring to Figure 1 of the figure, the body (10) is in the ready state, and the secondary side pressure (P2) is 0. The pressure fluid inside the body (10) is subjected to the suction of the primary side pressure (P1) vacuum source to make the guiding channel. The pressure fluid in (21) is discharged through the main passage (201), and it can be seen that the pressure regulating straight rod (32) of the chamber (301) is closed, and the pressure fluid of the guiding passage (21) cannot flow to the vacuum. In the pressure chamber (26), but there is still external atmospheric pressure (PP) in the atmospheric passage (33), so the vacuum (PT) cannot be generated on the main diaphragm (23), and the valve port (25) At present, it is also in the closed state, and the piston overflow hole (241) is in an open state, so that the atmospheric pressure (PP) enters the secondary side pressure (P2) end inside the main valve (20), so that the secondary side pressure (P2) is 0;

Referring to Figure 2, the body (10) is in operation. The secondary pressure (P2) is less than 0. At this time, the pressure regulating straight rod (32) is pushed by the main spring (42), which will result in extremely short The displacement stroke of the distance enables the primary side pressure (P1) in the guiding passage (21) to pass through the chamber (301) and into the vacuum pressure chamber (26), and the primary side pressure (P1) at this time Formed as a vacuum suction (PT), thereby driving the main diaphragm (23) to move upward, at this time, the valve piston (24) will be linked together to open the valve port (25), the valve port (25) The open state is because the vacuum suction (PT) multiplied by the area above the main diaphragm (23) will be greater than the secondary side pressure (P2) multiplied by the area under the main diaphragm (23) plus the spring (251) thrust. The upward balance allows the valve port (25) to be opened. In detail, when the valve piston (24) is opened upward, its vacuum suction (PT) flows into the upper diaphragm (23) and can be referred to as the upper half. And the lower half is the primary side pressure (P1) flowing out through the valve port (25), and the secondary side pressure (P2) and the spring (251) are compressed to generate thrust, when the upper half and the lower half are mutually After the force is removed, the displacement of the valve piston (24) is maximized. When the area of the valve port (25) is increased and the secondary side pressure (P2) is increased, the maximum air flow is the valve port ( 25) the maximum allowable throughput;

Further, as can be seen from Fig. 3, the middle valve seat (30) can mainly use the feedback passage (22) to control the secondary side pressure (P2) to maintain a stable flow rate, so that the atmospheric suction consumption is zero. The pressure difference of the orifice (31) balances the pressure accuracy, and as shown in Fig. 4, the main valve (20) can mainly be used to control the secondary side pressure (P2) flow rate. Maximizing, and allowing the movement of the main diaphragm (23) to increase the displacement range of the valve piston (24), thereby increasing the flow rate of the intake air and allowing the secondary side pressure (P2) to be closed. The orifice (31) balances the pressure so that the main diaphragm (23) is not quickly closed, and thus the central valve seat (30) mainly controls the main diaphragm (23) and the orifice (31). Used, and the main valve (20) is used to control the flow.

The aforementioned vacuum suction (PT) forms the secondary side pressure (P2) when the valve piston (24) is displaced upward by the main diaphragm (23), and the secondary side pressure (P2) can be used by the feedback passage ( 22) After the inner orifice (31) balances the differential pressure, it flows to the pressure regulating seat (40) to push the balance diaphragm (43) and the pressure regulating straight rod (32) downward, so that the guiding passage (21) is closed. After the main diaphragm (23) is no longer changed, in a balanced and stable state, the middle valve seat (30) and the body (10) can still achieve precise adjustment pressure and energy saving under the flow rate without suction atmospheric pressure. The purpose is shown in Figure 5;

In summary, the vacuum energy-saving large-capacity precision pressure regulating valve of the present invention has a main channel (201), a guiding channel (21) and a feedback channel (22) provided inside the body (10), which can internally flow. The primary side pressure (P1), the secondary side pressure (P2), and the vacuum suction force (PT) are used to open and close the valve port (25) through the main diaphragm (23) and the coupled valve piston (24). The atmospheric pressure (PP) of the atmospheric passage (33) assists the balance diaphragm (43) to prevent the balance diaphragm (43) from being completely adsorbed, so that the flow inside the body (10) can maintain precise adjustment pressure and save energy consumption. The purpose.

(10) ‧‧‧ Ontology
(20)‧‧‧Main valve
(201) ‧‧‧ main channel
(21)‧‧‧ Guide channel
(22) ‧‧‧Return channel
(23)‧‧‧Main diaphragm
(231)‧‧‧ Sealed straight rod
(24)‧‧‧ valve piston
(241)‧‧‧Piston overflow hole
(25)‧‧‧ Valve port
(251) ‧ ‧ spring
(26)‧‧‧ Vacuum pressure chamber
(30) ‧‧‧中座
(301) ‧ ‧ ‧ room
(31) ‧‧‧ orifice
(32) ‧‧‧Pressure straight rod
(33) ‧ ‧ atmospheric passage
(40) ‧‧‧pressure seat
(41)‧‧‧ knob
(42)‧‧‧Main Spring
(43) ‧‧‧balanced diaphragm
(44)‧‧‧Activity putter
(P1) ‧ ‧ primary side pressure
(P2) ‧ ‧ secondary side pressure
(PT) ‧ ‧ vacuum suction
(PP) ‧ ‧ atmospheric pressure

[Fig. 1] is a schematic diagram of the structure of the creation in the preparation state. [Fig. 2] is a schematic diagram of the structure of the creation in the working state. [Fig. 3] is an enlarged view of a part of the structure of the creation in the working state. [Fig. 4] is an enlarged view of a part of the structure created in the working state. [Fig. 5] is a schematic diagram of the creation or adjustment state. [Fig. 6] is a schematic diagram of the control loop of the present creation.

Claims (3)

A vacuum energy-saving large-capacity precision pressure regulating valve comprises: a body (10), which is supported by a main valve seat (20), a middle valve seat (30), and a pressure regulating seat (40) from bottom to top. The main valve seat (20) has a main passage (201) capable of circulating the primary side pressure (P1) and the secondary side pressure (P2), and a valve piston (24) is disposed on the main valve The center of the seat (20) constitutes a valve port (25), and the inside of the valve piston (24) is pivotally connected with a sealing straight rod (231) connected to a main diaphragm (23). The valve piston (24) The bottom end cooperates with the sealing straight rod (231) to form a piston overflow hole (241) of the adjustable switch, and the main diaphragm (23) is clamped by the middle valve seat (30) and the main valve seat (20). Forming a vacuum pressure chamber (26), and a balance diaphragm (43) is disposed between the pressure regulating seat (40) and the middle valve seat (30), and a balance is arranged below the balance diaphragm (43) a straightening rod (32), the pressure regulating straight rod (32) is disposed in a central chamber (301) of the middle valve seat (30); a guiding passage (21) is formed by the main passage (201) Passing through the chamber (301) to the vacuum pressure chamber (26); a feedback passage (22) from which the valve seat (30) The square is connected to the inside of the pressure regulating seat (40), and the feedback channel (22) is also connected to the main channel (201); an atmospheric channel (33) is disposed in the middle valve seat (30). And connecting to the space below the balancing membrane (43) to allow atmospheric pressure (PP) to flow; characterized in that the primary side pressure (P1) is generated through the guiding passage (21) to the vacuum pressure chamber (26) Vacuum suction (PT) causes the main diaphragm (23) to interlock the valve piston (24) to open the valve port (25), and the vacuum suction (PT) synchronously forms the secondary side pressure (P2). The secondary side pressure (P2) is balanced by the orifice (31) in the feedback passage (22), and then flows to the pressure regulating seat (40) to push back the balance diaphragm (43) and the adjustment. The straightening rod (32) is closed to close the guiding passage (21), and the central valve seat (30) and the body (10) can be inhaled without being inhaled after the main diaphragm (23) is no longer displaced. Under the pressure of atmospheric pressure (PP), it is still possible to achieve precise adjustment of pressure and energy conservation. The vacuum energy-saving large-capacity precision pressure regulating valve according to the first aspect of the invention, wherein the balance diaphragm (43) further comprises: an actuating push rod (44) disposed on the balance diaphragm (43) Between the pressure regulating straight rod (32), the adsorption area of the pressure regulating straight rod (32) is minimized, and the suction force of the vacuum suction force (PT) is minimized. In contrast, the balancing diaphragm (43) is affected by The area of atmospheric pressure (PP) action is also maximized to prevent the balancing diaphragm (43) from being adsorbed onto the center valve seat (30). The vacuum energy-saving large-capacity precision pressure regulating valve according to the first aspect of the patent application, wherein the valve port (25) is driven by the valve piston (24) to increase the area of the valve port (25), Lifting the valve piston (24) to the maximum displacement and increasing the secondary side pressure (P2) is the maximum allowable amount of air that can be vented by vacuum suction (PT).