TWM573397U - Two-stage intake and two-stage exhaust structure of electronically controlled proportional valve - Google Patents

Abstract

The utility model relates to a two-stage intake air and a two-stage exhaust structure of an electronically controlled proportional valve, which has a decompression chamber connected with a sound guiding hole passage, a sensor passage, and an exhaust passage, and a main film is arranged in the decompression chamber The film can push the straight rod with the main intake valve port and the auxiliary air inlet valve port to be displaced, and by detecting the sensor channel, when the pressure is too low, the main diaphragm pushes the straight rod downward for the first adjustment. And use the exhaust solenoid valve to adjust the secondary side pressure to control the decompression, so that the main intake valve port can accurately adjust the output of the secondary side pressure, when the main diaphragm pushes the straight rod down for the second stage. When the pressure is output, the auxiliary air inlet valve port can be opened to perform a large amount of output pressure, and the decompression chamber is exhausted to the exhaust electromagnetic valve through the exhaust passage to the first exhaust structure, and the vent hole provided by the straight rod is connected to the atmosphere. , the second section of the exhaust structure, the two sides of the intake and exhaust to make the secondary side pressure output can be fast and stable.

Description

Two-stage intake and two-stage exhaust structure of electronically controlled proportional valve

The utility model relates to a two-stage intake air and a two-stage exhaust structure of an electronically controlled proportional valve. The valve seat has a sound guiding hole passage, an exhaust passage and a sensor passage, and a main diaphragm with a check valve And a straight rod with a main intake valve port and a secondary intake valve port, and an air intake electromagnetic valve is connected outside the valve seat to connect the sound guide hole passage, the exhaust electromagnetic valve through the exhaust passage, and the sensor Connecting the sensor channel, when the primary side pressure is input into the decompression chamber through the intake solenoid valve through the channel of the guide hole, the main diaphragm can be pushed downward to open the main inlet valve port, and the excess valve valve will be redundant. The pressure is discharged to the exhaust passage, and the sensor detects the information of the secondary side pressure flowing in the sensor channel, and then adjusts the decompression time and the exhaust speed to make the main intake valve port finely adjusted. The output of the secondary side pressure, and when the main diaphragm pushes the straight rod down again for the second stage adjustment, the auxiliary air inlet valve port can be opened, and a large amount of output pressure is transmitted through the auxiliary air inlet valve port, thereby accelerating the stability. Fine adjustment of the secondary side pressure output, while the decompression chamber passes through the exhaust passage to the row The solenoid valve exhaust is called the first section of the exhaust structure, and the vent hole provided by the straight rod is connected to the atmosphere, which is the second section of the exhaust structure. By means of the two sections of intake and exhaust, the secondary side pressure output can be fast and The purpose of stability.

Electronically controlled proportional valves are widely used in different industries, but the power provided by pneumatic fluids, the stability and the pressure of the resulting output vary with the pressure of the air pressure. Therefore, in order to stabilize the pressure output and receive electricity Control system control, the conventional electronically controlled proportional valve is used to control the pressure of the pneumatic fluid is generally adopted, according to the control of the pneumatic fluid used to obtain a stable and controlled pressure;

The conventional electronically controlled proportional valve is generally provided with a decompression chamber, a straight rod, and a diaphragm. The operation process is generally performed by inputting a fluid from the input end, flowing through the flow path to the diaphragm, and driving the straight rod to be displaced downward. The fluid in the electronically controlled proportional valve can be adjusted through the valve port to the output end, and the diaphragm and the straight rod are usually disposed in the decompression chamber, and the space height of the decompression chamber is usually slightly omitted for the purpose of easy adjustment. More than the actuation stroke of the diaphragm, the displacement of the straight rod can be relatively smooth; due to the pressure difference between the diaphragm and the decompression chamber, a force is applied to the straight rod, so that the input fluid pressure maintains a certain output flow, so The input fluid pressure cannot be used for precise pressure adjustment, and in order to optimize the application of the input fluid, a structure that can perform range adjustment pressure and has precise adjustment is required.

The author is a two-stage intake and two-stage exhaust structure of an electronically controlled proportional valve. The main technical purpose is to use a main diaphragm with a check valve to fit in the valve seat to form a decompression chamber. When the primary side pressure of the external input is input into the decompression chamber through the intake solenoid valve through the passage hole, the main diaphragm can be pushed down to open the main intake valve port, and the excess pressure is discharged to the check valve through the check valve. The exhaust passage, and the sensor detects the information of the secondary side pressure flowing in the sensor channel, and then opens the pressure reducing solenoid valve to adjust the reaction time and the exhaust speed of the decompression, so that the main intake valve port The output of the secondary side pressure is precisely adjusted;

When the main diaphragm pushes the straight rod again to perform the second stage adjustment, the main diaphragm will again push down the straight rod from the aforementioned position, so that the auxiliary air inlet valve port is also opened and passed through the auxiliary feed. The gas valve port performs a large amount of output pressure to accelerate the precise adjustment of the secondary side pressure output.

Another objective of this creation is to maintain the effect of increasing the pressure at a steady rate by controlling the cross-sectional area of the orifice flow < the cross-sectional area of the intake solenoid valve flow, and the space in the center of the decompression chamber. The required volume, such as the round hole area and the round hole height, can be minimized, so that the height of the top valve is effectively reduced, and the main diaphragm can still quickly balance the pressure in the decompression chamber.

The author is a two-stage intake and two-stage exhaust structure of an electronically controlled proportional valve, which is composed of an intake solenoid valve, an exhaust solenoid valve, and a sensor above a valve seat having a flow path. The flow path has an input end for the primary side pressure inflow and an output end for the secondary side pressure to flow out, and the main diaphragm with the check valve is disposed in the valve seat to form a decompression chamber, and the decompression chamber is connected Provided with a sounding guide channel connected to the input end by the intake solenoid valve, an exhaust valve provided with an exhaust solenoid valve to control excess pressure, and a detector for detecting the connection of the output end a sensor channel, and a straight rod is disposed in the center of the valve seat, the straight rod is sleeved on the outer side of the straight rod assembly, and the main elastic element and the secondary elastic element are respectively disposed on the straight rod and the straight rod assembly The lower part is formed by the main intake valve port and the auxiliary air inlet valve port, so that the straight rod can be opened and closed in two stages;

After the sensor detects the secondary side pressure passed by the sensor channel, if the output pressure is too low, the main diaphragm pushes the straight rod downward for the first stage adjustment, and the exhaust electromagnetic The valve can adjust the secondary side pressure to perform the decompression control by the opening of the check valve, so that the main intake valve port reaches the output of the secondary side pressure precisely adjusted, and when the main diaphragm is pushed downward again When the rod performs the second stage output pressure, the auxiliary air inlet valve port can be opened to perform a large amount of output pressure, thereby accelerating the purpose of stabilizing the secondary side pressure output.

In general, according to the present creation, the best feasible embodiment, together with the detailed description of Figures 1 to 10, will increase the understanding of the creation;

The creation is a two-stage intake and two-stage exhaust structure of an electronically controlled proportional valve, and the structure comprises: a valve seat (20) having a first-class diameter (24) inside, the flow path (24) There is an input end (21) for the primary side pressure (P1) to flow in, and an output end (22) for the secondary side pressure (P2) to flow out, and a top valve (30) is connected to the valve seat (20). And the top valve (30) is internally provided with a passage, and the valve seat (20) is further provided with an intake electromagnetic valve (PA), a throttle port (PA1), an exhaust solenoid valve (PB), and a sensor (PC);

a decompression chamber (23), in detail, the decompression chamber (23) having a check valve (401) and a gasket when the top valve (30) is coupled to the valve seat (20) A main diaphragm (40) of (402) is interposed therebetween, and the intake solenoid valve (PA) and the throttle port (PA1) are connected to the input end of the decompression chamber (23). a sounding guide passage (211) of (21), an exhaust passage (222) for controlling excess pressure by the exhaust solenoid valve (PB), and detecting the output end by the sensor (PC) (22) a sensor channel (221) is connected, and the volume required for the central space of the decompression chamber (23), such as the area of the hole and the height of the hole, can be minimized to the main diaphragm (40) ) to quickly balance the pressure in the decompression chamber (23), more specifically, to adjust the equilibrium pressure (Pt) more quickly, and to limit the orifice (P1) of the primary side pressure (P1) The intake air flow rate, but still retains the effect of increasing the pressure at a steady speed, can make the opening time of the intake electromagnetic valve (PA) shorter, so that the displacement stroke of the main diaphragm (40) can be more easily controlled;

The straight rod (50) is disposed at the inner center of the valve seat (20), and the outer rod (50) is sleeved outside the straight rod assembly (51), and a main elastic member (501) is disposed under the straight rod (50) Forming a main intake valve port (502), and the straight rod assembly (51) is provided with a pair of elastic members (511) to form a pair of intake valve ports (512), so that the straight rod (50) can be in two stages Opening and closing design of the intake air;

Referring again to Figure 1, it can be seen that an intake solenoid valve (PA), an exhaust solenoid valve (PB), and a sensor (PC) are connected above the top valve (30). After the control circuit (P) is driven by the power supply (PR), after setting the input force signal (PI) and the output signal (PO), the relevant pressure indication (PP) is displayed through the control circuit (P) to drive the intake electromagnetic The valve (PA) and the exhaust solenoid valve (PB), and the path connecting the top valve (30) via the output end (22) to the front of the control circuit (P) is a sensor channel (221), the sensing The device (PC) is mainly used to detect the flow of the secondary side pressure (P2). When it exceeds or falls below the set value, the information is fed back to the control circuit (P) for the intake solenoid valve (PA) and the exhaust electromagnetic When the valve (PB) is discriminated, if the secondary side pressure (P2) is too high, the exhaust solenoid valve (PB) and the check valve (401) are further driven to perform secondary side pressure (P2) exhaust, And open the air outlet (PB1) at the exhaust solenoid valve (PB) to increase the displacement; conversely, if the secondary pressure (P2) is too low, drive the intake solenoid (PA) to push the main diaphragm (40) ) to open the main intake valve port (502), vice The door valve (512) to the purpose of increasing the secondary pressure (P2), but also with please refer circuit diagram showing an overall configuration of a second as shown in FIG., It can be appreciated that more operational flow.

Referring again to Figures 3 to 4, when the state is ready, the intake solenoid valve (PA) is in the closed state, and the exhaust solenoid valve (PB) is in the open state, and the primary side pressure (P1) is seen by After the input end (21) enters, it is blocked by the main intake valve port (502) and the auxiliary intake valve port (512), and part of the primary side pressure (P1) flows through the sound guide hole passage (211) to the intake electromagnetic After the valve (PA), it is blocked from flowing into the decompression chamber (23); thus, the secondary side pressure (P2) is seen to be 0 at this time, and the vent hole below the straight rod (50) ( 61) Keep the connection with the outside for the opening.

Referring again to Figures 5 to 6, as shown in the first stage of the adjustment state, the intake solenoid valve (PA) is in an open state, and the exhaust solenoid valve (PB) is in a closed state, the primary side. The pressure (P1) flows through the orifice (PA1) of the intake solenoid valve (PA) through the sounding passage passage (211) into the decompression chamber (23), and forms a balance pressure (Pt) to be the main diaphragm. (40) pushing down the top against the straight rod (50) to be displaced downward, and the main intake valve port (502) is also opened together, at this time the first stage exhaust structure (70) and the second stage exhaust The structure (80) is closed, and the primary side pressure (P1) also partially flows through the main intake valve port (502) to form a secondary side pressure (P2) to the output end (22), and at the output end (22). The sensor channel (221) on the side also causes part of the secondary side pressure (P2) to flow to the sensor (PC), and the sensor (PC) returns the signal to the control loop (P) to interpret the relevant secondary side. Pressure (P2), after the determination of the intake solenoid valve (PA) and the exhaust solenoid valve (PB), if the secondary side pressure (P2) is too high, the output command is again applied to the exhaust solenoid valve (PB). Exhaust pressure decompression action; can be seen from the first stage adjustment state The secondary pressure (P2) is now >0, and the vent (61) below the straight rod (50) is closed.

Referring again to Figures 7 to 8, as shown in the second stage after startup, the intake solenoid valve (PA) is in an open state, and the exhaust solenoid valve (PB) is in a closed state when input. When the primary side pressure (P1) continues to increase, the main diaphragm (40) will increase in downward force and push the straight rod (50) downward again, at which time the first section of the exhaust structure (70) The second section of the exhaust structure (80) is still closed, and at the same time, the auxiliary inlet valve port (512) is also opened to speed up the flow of the fluid and increase the flow rate; the secondary side can be seen by the second stage adjustment state. The pressure (P2) is now greater than 0, and the vent (61) below the straight rod (50) is closed.

Referring again to Figures 9 to 10, the voltage is in a regulated state, the intake solenoid valve (PA) is in a closed state, and the exhaust solenoid valve (PB) is in an open state. When a stable pressure is required, The main diaphragm (40), the gasket (402) and the check valve (401) are opened through the exhaust solenoid valve (PB), and the air port (PB1) is driven through the exhaust passage (222) to balance the pressure. (Pt) partially flows to the outside to the preset working pressure value of the electronically controlled proportional valve (10), and the main intake valve port (502) and the auxiliary intake valve port (512) are closed at this time; It can be seen from the steady state that the secondary side pressure (P2) is greater than 0 at this time, but no longer flows to the output end (22), and the vent hole (61) below the straight rod (50) is closed, in more detail. At this time, the operation of the decompression chamber (23) through the exhaust passage (222) to the exhaust solenoid valve (PB) is referred to as a first-stage exhaust structure (70), and the first-stage exhaust structure (70) is opened. When the exhaust solenoid valve (PB) can completely control the decompression speed of the decompression and the reaction time is completely 100%, the control loop (P) also completely dominates the decompression result to achieve the precise secondary side. Pressure (P2) output, then When the pressure is adjusted and returned to the preparation state as shown in Figures 3 to 4, it can be seen that the main diaphragm (40), the gasket (402) and the internal pressure balance of the decompression chamber (23) are displaced upward. The secondary side pressure (P2) in the valve seat (20) will be discharged through the vent hole (60) extending above the straight rod (50), and the decompression speed is faster and the reaction time is faster. And this stage of operation is called the second section of the exhaust structure (80).

In summary, the two-stage intake and two-stage exhaust structure of the electronically controlled proportional valve are driven by the main diaphragm (40) and the sealing gasket (402) in two stages (50). The upper main intake valve port (502) and the auxiliary intake valve port (512) perform two-stage intake opening and closing adjustment, and assist the two-stage exhaust through the air port (PB1) and the vent hole (60). Therefore, the electronically controlled proportional valve (10) can be quickly regulated and achieve precise voltage regulation in the case of a short reaction time.

(10)‧‧‧Electric proportional valve

(20)‧‧‧ Seat

(21)‧‧‧ Input

(211)‧‧‧Guide channel

(22)‧‧‧ Output

(221)‧‧‧Sensor channel

(222)‧‧‧Exhaust passage

(23)‧‧‧Decompression room

(24) ‧ ‧ flow path

(30)‧‧‧Top valve

(40)‧‧‧Main diaphragm

(401)‧‧‧Check valve

(402)‧‧‧Seal gasket

(50)‧‧‧ Straight

(501)‧‧‧Subelastic elements

(502)‧‧‧Auxiliary intake valve port

(51)‧‧‧ Straight rod assembly

(511)‧‧‧Main elastic element

(512)‧‧‧Main intake valve port

(60) ‧ ‧ vents

(70)‧‧‧First stage exhaust structure

(80)‧‧‧Second section exhaust structure

(P)‧‧‧Control loop

(PA)‧‧‧Intake solenoid valve

(PA1) ‧ ‧ burrow

(PB)‧‧‧Exhaust solenoid valve

(PB1)‧‧‧ atmosphere

(PC)‧‧‧ Sensor

(PR)‧‧‧Power

(PI)‧‧‧ Input Signal

(PO) ‧ ‧ output signal

(PP) ‧ ‧ pressure indication

(P1) ‧ ‧ primary side pressure

(P2) ‧ ‧ secondary side pressure

(Pt) ‧‧ ‧balanced pressure

[Fig. 1] is a schematic diagram of the structure of the creation. [Fig. 2] is a schematic diagram of the circuit created in the overall structure. [Fig. 3] is a schematic diagram of the action in the preparation state. [Fig. 4] is a partially enlarged schematic view of the creation of Fig. 3. [Fig. 5] is a schematic diagram of the action of the first stage adjustment. [Fig. 6] is a partially enlarged schematic view of the creation of Fig. 5. [Fig. 7] is a schematic diagram of the action of the second stage adjustment. [Fig. 8] is a partially enlarged schematic view of the creation of Fig. 7. [Fig. 9] is a schematic diagram of the action created in the steady state. [Fig. 10] is a partially enlarged schematic view of the creation of Fig. 9.

Claims (3)

A two-stage intake and two-stage exhaust structure of an electronically controlled proportional valve, comprising: a valve seat (20) having a first-class diameter (24) therein, the flow path (24) having a primary side pressure ( P1) an input end (21) flowing in, and a secondary side pressure (P2) flowing out of an output end (22), and an intake electromagnetic valve (PA) and an exhaust electromagnetic unit are arranged above the valve seat (20) a valve (PB), a flow port (PA1), and a sensor (PC); a decompression chamber (23) having a check valve (401) and a gasket A main diaphragm (40) of the piece (402) is configured to be interposed with the valve seat (40), and the decompression chamber (23) is coupled to be connected to the input end by the intake electromagnetic valve (PA). a sounding guide passage (211) of (21), an exhaust passage (222) for controlling excess pressure by the exhaust solenoid valve (PB), and detecting the output end by the sensor (PC) ( 22) a sensor channel (221) connected; a straight rod (50) disposed at the center of the valve seat (20), the outer rod (50) is sleeved with a straight rod assembly (51), the straight rod (50) A main elastic member (501) is disposed below to form a main intake valve port (502), and the straight rod assembly (51) is provided with a pair of bullets. The sexual component (511) forms an intake valve port (512), so that the straight bar (50) can be opened and closed in a two-stage intake; the feature is: detecting through the sensor (PC) After the secondary side pressure (P2) of the sensor channel (221) passes, if the output end (21) pressure is too low, the main diaphragm (40) pushes the straight rod (50) downward for the first time. In the stage adjustment, the exhaust solenoid valve (PA) can adjust the secondary side pressure (P2) by the check valve (401) to perform decompression control, so that the main intake valve port (502) can be precisely adjusted. The output of the secondary side pressure (P2), and when the main diaphragm (22) pushes the straight rod (50) downward again to perform the second stage output pressure, the auxiliary intake valve port (512) can be opened. A large amount of output pressure is used to accelerate the stabilization of the secondary side pressure (P2) output. According to the two-stage intake and two-stage exhaust structure of the electronically controlled proportional valve according to claim 1, wherein the throttle port (PA1) has a flow cross-sectional area smaller than that of the intake solenoid valve (PB) The cross-sectional area of the flow rate enables the primary side pressure (P1) entering the decompression chamber (23) to be stably pressurized to the equilibrium pressure (Pt), and also to the second time on the other side of the main diaphragm (40) The side pressure (P2) also quickly balances the equilibrium pressure (Pt) in the decompression chamber (23). The two-stage intake and two-stage exhaust structure of the electronically controlled proportional valve according to claim 1 further includes: a first stage exhaust structure (70), which is the decompression chamber (23) The exhaust passage (222) is connected to the exhaust solenoid valve (PB), and the exhaust solenoid valve (PB) can completely control the speed of the decompression exhaust gas and the reaction time, so that the second time The side pressure (P2) can achieve a precision output; a second stage exhaust structure (80) is formed by a vent hole (60) extending above the straight rod (50) to the lower portion, and the second stage exhaust The structure (80) decompresses faster than the first stage exhaust structure (70), so that the first stage exhaust structure (70) and the second stage exhaust structure (80) can be decompressed. The time is faster and the purpose of exhaust gas regulation can be achieved.