TWM580151U - Electrically controlled high-capacity proportional valve - Google Patents

Abstract

The utility model relates to an electronically controlled large-capacity proportional valve, which has a decompression chamber inside, which is connected with a sound guiding hole channel, a sensor channel and an exhaust channel, and the decompression chamber is provided with a main diaphragm with a check valve, which can be used To drive a spindle member and a primary shaft member to perform a displacement operation, by detecting the sensor passage, when the pressure is too low, the main diaphragm pushes the spindle member against the secondary shaft member, and the secondary shaft member The valve port can adjust the displacement of the two-stage displacement to control the fluid flow after the valve port is opened. At this time, the primary side pressure enters the output end of the valve base to increase the secondary side pressure, so that the output of the secondary side pressure is precisely adjusted. The two-stage exhaust can be performed by using the vent hole provided in the main shaft member and the air flow hole provided in the exhaust chamber, so that the overall structure can be quickly adjusted and precision regulated by two-stage intake and exhaust. And for the purpose of large-capacity proportional valves.

Description

Electronically controlled large capacity proportional valve

An electronically controlled large-capacity proportional valve, wherein a valve chamber is formed with a decompression chamber formed by a main diaphragm having a check valve, and a valve composed of a main shaft member and a sub-shaft member that is displaced by the main diaphragm The mouth can be input into the decompression chamber by the channel of the guide hole and the opening of the intake solenoid valve, so that the pressure on the main diaphragm is increased to push the first stage downward, and the second step is adjusted through the exhaust solenoid valve. The side pressure is controlled by decompression, so that the spindle part, the secondary shaft part and the valve port can achieve the precision adjustment of the output of the secondary side pressure, and when a large amount of exhaust demand is required, the top end of the main shaft piece completely enters the exhaust chamber, because The area of the exhaust chamber minus the area of the main shaft member is equal to the area of the valve port, so that a large amount of secondary side pressure can be accelerated by the air flow hole to pass through the outside of the valve seat, thereby accelerating the purpose of stabilizing the secondary side pressure. .

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 be electrically controlled System control, the technique of using the electronically controlled proportional valve to control the pressure of the pneumatic fluid is generally adopted, and the pneumatic fluid used is controlled to obtain a stable and controlled pressure; the conventional electronically controlled proportional valve generally The decompression chamber, the straight rod, and the diaphragm are arranged, and the operation process is generally: after the input end inputs the fluid, the internal flow path flows to the diaphragm, and the straight rod is driven to be displaced downward, so that the fluid in the electronically controlled proportional valve can pass. The valve port is circulated to the output end for adjustment, and the aforementioned film The sheet and the straight rod are usually arranged in the decompression chamber, and for easy adjustment, the space height of the decompression chamber is usually slightly larger than the actuation stroke of the diaphragm, so that the displacement of the straight rod can be smooth; because the diaphragm and the decompression chamber The pressure difference is applied to the straight rod so that the input fluid pressure maintains a certain output flow rate, so the input fluid pressure cannot be used for precise pressure adjustment, and if a larger capacity electronic control ratio is required If the valve is applied, the design of the mechanism will become more complicated. Therefore, in order to make the input fluid to be optimally applied to the electronically controlled proportional valve of the large-capacity structure, it is required to be able to operate within the working pressure range. The pressure is adjusted and the structure is precisely adjusted.

This creation is an electronically controlled large-capacity proportional valve. Its 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 external input of the primary side pressure passes through the sound guide hole When the passage and the opening intake electromagnetic valve flow into the decompression chamber to push the main diaphragm, the displacement of the main shaft member and the sub-shaft member can be pushed, so that the valve port can be opened and closed to control the output of the secondary side pressure; After the primary side pressure input raises the secondary side pressure, if the pressure is too high and a larger flow rate of exhaust is required, the exhaust solenoid valve in the decompression chamber is quickly exhausted to reduce the pressure on the main diaphragm, the spindle piece and The secondary shaft members are all reset upward by the elastic member, so that the top end of the main shaft member completely enters the exhaust chamber, because the annular chamber area after the area of the exhaust chamber minus the area of the main shaft member is equal to the area of the valve opening, so The airflow hole accelerates the output and discharges a large amount of pressure to the outside of the valve seat. Thus, the two-stage exhaust through the main shaft member and the two-stage air intake design of the secondary shaft member make the pressure regulation more precise and stable; An electrically controlled proportional valve mass, which by the Department: above the valve seat having a flow path is provided an intake valve, an exhaust valve, and the sensor, the flow path can be provided for the primary-side pressure of the inflowing The input end and the output end for the secondary side pressure to flow out, the main diaphragm of the valve seat is provided with a check valve to form a decompression chamber, and the decompression chamber is connected with the intake solenoid valve. a sounding passageway connected to the input end, an exhaust gas passage connected to the output end of the exhaust solenoid valve, and a sensor channel for detecting the connection from the output end, and a vent hole a main shaft member is installed in an exhaust chamber of the middle valve, and a primary shaft member of the elastic member is disposed below the main shaft member, the main diaphragm abuts against the main shaft member, and the displacement drives the secondary shaft member, the secondary shaft The piece cooperates with the elastic force of the elastic element to form a valve port. When the output end pressure is too low, the main diaphragm pushes the top of the main shaft member against the secondary shaft member, and the secondary shaft member enables the valve port to perform a two-stage displacement distance. Adjusting and controlling the fluid flow after the valve port is opened. At this time, the primary side pressure enters the output end of the valve seat to increase the secondary side pressure; if the pressure is too high, the exhaust electromagnetic valve can adjust the secondary side by the check valve The pressure is controlled by decompression, so that the valve port reaches The output of the secondary side pressure is tightly adjusted, and when a large amount of exhaust demand is performed, the top end of the main shaft member completely enters the exhaust chamber, and the annular area after the area of the exhaust chamber minus the area of the main shaft member is equal to the valve opening The area can be used to accelerate the output of a large amount of pressure through the large size of the venting hole to directly pass through the outside of the valve seat, thereby accelerating the purpose of stabilizing the secondary side pressure output.

(10) ‧‧‧ seat

(101)‧‧‧Main diaphragm

(1011)‧‧‧Check valve

(102)‧‧‧Decompression chamber

(11)‧‧‧Top valve

(111)‧‧‧Guide channel

(112)‧‧‧Exhaust passage

(113)‧‧‧Sensor channel

(12)‧‧‧中中阀

(121) ‧‧‧ steady orifice

(122)‧‧‧Chinese valve check valve

(123)‧‧‧Airflow holes

(124)‧‧‧Exhaust chamber

(13)‧‧‧Valve base

(131)‧‧‧ Input

(132)‧‧‧ Output

(133)‧‧‧ flow path

(134)‧‧‧Flexural components

(14)‧‧‧Spindle parts

(141) ‧ ‧ vents

(15) ‧‧‧ times shaft parts

(151)‧‧‧Inlay

(152)‧‧‧ Valve port

(PA)‧‧‧Intake solenoid valve

(PA1) ‧ ‧ burrow

(PB)‧‧‧Exhaust solenoid valve

(PB1)‧‧‧ atmosphere

(PC)‧‧‧ Sensor

(P)‧‧‧Control loop

(PR)‧‧‧Power

(PI)‧‧‧ Input Signal

(PP) ‧ ‧ pressure indication

(PO) ‧ ‧ output signal

(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 of the structure of the present creation.

[Fig. 3] is a schematic diagram of the action in the preparation state.

[Fig. 4] is a schematic diagram of the action created in the startup state.

[Fig. 5] is a schematic diagram of the action of the micro-liter pressure in the startup state.

[Fig. 6] is a schematic diagram of the action of creating a slight pressure drop in the startup state.

[Fig. 7] is a schematic diagram of the action created in the standby state.

[Fig. 8] is a schematic diagram of the action created in the working state.

Generally, according to the present creation, the best feasible embodiment, together with the detailed description of Figures 1-8, adds to the understanding of the creation; the creation is an electronically controlled large-capacity proportional valve, the structure of which includes The valve seat (10) is connected by a top valve (11), a middle valve (12) and a valve base (13) from top to bottom. The valve seat (10) has a primary side pressure. (P1) an input terminal (131) and an output terminal (132) for outputting a secondary side pressure (P2), the input terminal (131) to the output terminal (132) being driven by a first-class diameter (133) Connecting, a main diaphragm (101) having a check valve (1011) is interposed between the top valve (11) and the middle valve (12) to form a decompression chamber (102), and the decompression The volume required for the central space of the chamber (102), such as the round hole area and the round hole height, can be minimized, so that the main diaphragm (101) can quickly balance the pressure in the decompression chamber (102), in more detail. In this case, the adjustment of the balance pressure (PT) is more rapid, and if the intake flow rate of the orifice (PA1) of the primary side pressure (P1) is further limited, but the effect of increasing the pressure at a constant rate is maintained, Let the intake solenoid valve (PA) open The opening time is further shortened, so that the displacement stroke of the main diaphragm (101) can be more easily controlled; the decompression chamber (102) is further connected to have an intake solenoid valve (PA) controlled to be connected to the input end ( 131) a sounding guide passage (111), an exhaust passage (112) for controlling excess pressure by the exhaust solenoid valve (PB), and detecting the output end (132) by a sensor (PC) a sensor channel (113) connected to the valve, and a central flow hole (121) connected to the valve base (13) is provided in the middle valve (12), and the steady flow hole is provided (121) a middle valve check valve (122) connected to the sound guiding hole passage (111), and an air flow hole (123) through the outside; and a main shaft member (14) having a vent hole (141) Installed in an exhaust chamber (124) of the middle valve (12), and below the main shaft member (14) is provided a primary shaft member (15) having an elastic member (134), the main diaphragm (101) The top end of the main shaft member (14), and thus the displacement driving the sub-shaft member (15) and the elastic force of the elastic member (134) to form a valve port (152), when the output end (132) pressure is too low, the The main diaphragm (101) pushes the main shaft member (14) and the secondary shaft member (15) downward, and the secondary shaft member (15) performs two-stage intake air adjustment, and the exhaust electromagnetic valve (PA) can take the backstop The valve (1011) adjusts the output of the secondary side pressure (P2), and when a large amount of exhaust demand is made, the top end of the spindle member (14) completely enters the exhaust chamber (124) because of the exhaust chamber (124) The area of the area minus the area of the main shaft member (14) is equal to the area of the valve port (152), so that the air flow hole (123) can be used to accelerate the output of a large amount of pressure to the outside of the valve seat (10), thereby accelerating the stability. The purpose of this secondary side pressure (P2) output.

Referring again to Figure 1, it can be seen that the top valve (11) is connected with an intake solenoid valve (PA), an exhaust solenoid valve (PB), and a sensor (PC), which mainly pass through the control loop ( P) After the power supply (PR) is driven, after setting the input force signal (PI) and the output signal (PO), the relevant pressure indication (PP) is displayed through the control loop (P) to drive the intake solenoid valve (PA). And the exhaust solenoid valve (PB), and the path connecting the top valve (11) to the control circuit (P) via the output terminal (132) is a sensor channel (113), and the sensor (PC) is mainly It is used to detect the pressure of the secondary side pressure (P2). When the value of the secondary side pressure (P2) is exceeded or lower, the information is fed back to the control circuit (P) for the intake solenoid valve (PA) and the row. The difference between the gas solenoid valve (PB), if the secondary side pressure (P2) is too high, and then drive the exhaust solenoid valve (PB) and the check valve (1011) to perform the secondary side pressure (P2) One-stage exhaust, and opening the air port (PB1) at the exhaust solenoid valve (PB) to increase the exhaust volume, and when a large amount of exhaust demand is made, the top end of the main shaft member (14) completely enters the row. In the gas chamber (124), since the area of the exhaust chamber (124) minus the area of the main shaft member (14) is equal to the area of the valve port (152), the air flow hole (123) can be used to accelerate the output. A large amount of pressure is passed through the outside of the valve seat (10), which is the second stage exhaust; if the secondary side pressure (P2) is too low, the intake solenoid valve (PA) is driven to push the main diaphragm (101), so that The main shaft member (14) continues to move downward to push the secondary shaft member (15), so that the secondary side pressure (P2) can continue to increase to a predetermined value, and also refers to the circuit diagram of the overall structure as shown in FIG. , can understand the relevant operational processes more clearly.

Referring again to the preparation state as shown in Figure 3, it can be seen that the intake solenoid valve (PA) is closed, the exhaust solenoid valve (PB) is open, and the primary side pressure (P1) is entered by the input end (131) due to the valve port. (152) Closed and blocked, part of the primary side pressure (P1) flows through the sounding guide passage (111) to the intake electromagnetic valve (PA), and is blocked from flowing to the decompression chamber (102). The secondary side pressure (P2) is zero.

Referring again to the starting state as shown in Fig. 4, the intake solenoid valve (PA) is open, the exhaust solenoid valve (PB) is closed, and the primary side pressure (P1) is passed through the pilot hole passage (111) through the intake solenoid valve. The orifice (PA1) of the (PA) flows into the decompression chamber (102) at a position above the main diaphragm (101), and also forms a balance pressure (PT) to push the main diaphragm (101) downward. Up to the bottom, and driving the top to resist the downward displacement of the main shaft member (14), further driving the secondary shaft member (15) to be displaced downward, thereby opening the valve port (152); passing through the valve port (152) The primary side pressure (P1) is converted to the secondary side pressure (P2), which in turn flows to the output end (132), the middle valve (12), and the sensor channel (113), when the sensor (PC) returns the signal. The control circuit (P) interprets the relevant secondary side pressure (P2), and 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 is re-output. An operation of exhausting and decompressing the exhaust solenoid valve (PB) is instructed; and the secondary side pressure (P2) can flow into the middle valve (12) via the steady flow hole (121), the steady flow hole (121) Mainly based on the central axis of the middle valve (12), with A symmetrically disposed annularly arranged together, so that the main membrane (101) increase the stability of the displacement.

This design can effectively improve the stability of the displacement of the main diaphragm (101); at this time, the valve port (152) is in a state in which the first stage intake and the second stage intake are simultaneously performed, this stage is The state of the valve port (152) is fully opened.

Referring again to the starting state as shown in Figure 5, the secondary side pressure (P2) rise is adjusted, the intake solenoid valve (PA) is closed, the exhaust solenoid valve (PB) is open, and the exhaust solenoid valve is opened. (PB) control to reduce fluid flowing into the decompression chamber (102) above the main diaphragm (101), thereby reducing the equilibrium pressure (PT), and the equilibrium pressure (PT) is located within the decompression chamber (102) After the secondary side pressure (P2) under the main diaphragm (101) is balanced, the generated force is applied to the main diaphragm (101), and the main diaphragm (101) is displaced upward from the lowermost portion of FIG. The main shaft member (14) and the secondary shaft member (15) are all reset upward by the elastic member (134). At this time, the valve port (152) is in the state of the first stage intake, and the primary side pressure ( P1) The gap between the secondary shaft member (15) and the valve port (152) flows to the output end (132), the secondary side pressure (P2) does not rise rapidly, and the intake solenoid valve (PA) can be completely percent. One hundred controls the time and speed at which the secondary side pressure (P2) rises.

Referring again to the starting state as shown in Fig. 6, which is to adjust the pressure drop, the intake solenoid valve (PA) is closed, the exhaust solenoid valve (PB) is open, and the valve port (152) at this time is In the closed state, the primary side pressure (P1) cannot flow through the valve port (152), and the vent hole (141) located in the spindle member (14) also allows the secondary side pressure (P2) to flow to the decompression chamber. In (102), this circulation is called the first stage exhaust in this creation, and the time and speed of discharging the fluid by the exhaust solenoid valve (PB), and completely control the secondary side pressure (P2) by 100%. The reduced time and speed reach a predetermined target value.

Referring again to the standby state as shown in Fig. 7, the intake solenoid valve (PA) is closed, the exhaust solenoid valve (PB) is closed, and the valve port (152) is closed. The output terminal (132) in this state is also Closed, the secondary side pressure (P2) can be kept in a stable state; Referring again to the working state as shown in Fig. 8, the intake solenoid valve (PA) is open, the exhaust solenoid valve (PB) is closed, and the valve port (152) is fully opened for the first stage and the second stage. The secondary side pressure (P2) is outputted by the output terminal (132) in a large amount; as shown in the third to eighth figures, only the secondary side pressure (P2) of the ready state and the working state is normal. The output fluid, the secondary side pressure (P2) of other states is not output by the output end (132); and the air flow hole (123) located in the middle valve (12) is only in the ready state or the output end. (132) When the pressure of the counter-current fluid is too large, the second-stage exhaust can be started to accelerate the completion of the large-capacity exhaust, and the other states are not opened; and the middle valve located in the middle valve (12) is stopped. The valve (122), in further detail, is connected between the steady flow hole (121) and the sound guide hole passage (111), when the primary side pressure (P1) is lower than the secondary side pressure (P2) The secondary side pressure (P2) can be used to circulate and match the primary side pressure (P1), and the secondary side pressure (P2) can be quickly decompressed and balanced.

In summary, the electronically controlled large-capacity proportional valve of the present invention can obtain the two-stage intake of the secondary shaft member (15) by the combined stage driving of the main shaft member (14) and the secondary shaft member (15). Adjusting the design, and performing the first stage of exhausting, and the air flow hole (123) disposed in the exhaust chamber (124) for the second stage in conjunction with the vent hole (141) also provided in the main shaft member (14) Exhaust gas enables this creation to quickly perform secondary side pressure (P2) voltage regulation and achieve precise pressure regulation in a large-capacity electronically controlled proportional valve field.

Claims (4)

An electronically controlled large-capacity proportional valve comprising: a valve seat (10), which is composed of a top valve (11), a middle valve (12) and a valve base (13) connected in sequence from top to bottom, the valve seat (10) an input terminal (131) for inputting the primary side pressure (P1) and an output terminal (132) for outputting the secondary side pressure (P2), the input terminal (131) to the output terminal (132) The main diaphragm (101) with a check valve (1011) is formed between the top valve (11) and the middle valve (12) by a first-class diameter (133) to form a decompression chamber. (102), the top valve (11) is connected with a sound guiding hole passage (111) connected to the input end (131) by the intake electromagnetic valve (PA), and an exhaust electromagnetic valve (PB) Controlling an exhaust passage (112) for removing excess pressure, and detecting a sensor passage (113) connected by the output end (132) by a sensor (PC), and the middle valve (12) a steady flow hole (121) connected to the valve base (13) is provided, and a steady-state hole (121) is connected to a middle valve check valve (122) of the sound guide hole passage (111), And an air flow hole (123) that passes through the outside; and is characterized in that: a main shaft member (14) having a vent hole (141) is mounted on one of the middle valve (12) A primary shaft member (15) having an elastic member (134) is disposed in the air chamber (124), and the main diaphragm (101) abuts against the main shaft member (14). Displacement drives the secondary shaft member (15) to cooperate with the elastic force of the elastic member (134) to form a valve port (152). When the output end (132) is under pressure, the main diaphragm (101) pushes the main shaft downward. The piece (14) and the secondary shaft member (15) perform two-stage intake air adjustment, and the exhaust solenoid valve (PA) can pass the check valve (1011) of the main diaphragm (101) and the vent hole ( 141) adjusting the secondary side pressure (P2) to perform the first stage exhaust gas pressure reduction control, so that the valve port (152) can precisely adjust the output of the secondary side pressure (P2), and when a large amount of exhaust gas is performed When required, the top end of the main shaft member (14) completely enters the exhaust chamber (124), and the annular area of the area of the exhaust chamber (124) minus the area of the main shaft member (14) is equal to the valve opening ( 152) area, so the airflow hole (123) can accelerate the output of a large amount of pressure to the outside of the valve seat (10), which is a large amount of exhaust gas decompression in the second stage, thereby accelerating the stabilization of the secondary side pressure (P2) output. purpose. The electronically controlled large-capacity proportional valve according to the first aspect of the invention, wherein the secondary shaft member (15) further comprises: a recessed groove (151) disposed at a center of the lower shaft member (15), The slot (151) can be disposed in the spindle member (14) to control the opening and closing of the vent hole (141). The electronically controlled large-capacity proportional valve according to the first aspect of the patent application, wherein the steady flow hole (121) further comprises: a middle valve check valve (122) disposed in the steady flow hole (121) One side is configured to connect the steady flow hole (121) to the sound guide hole passage (111), so that the secondary side pressure (P2) can quickly match the decrease of the primary side pressure (P1), and the secondary side is made Pressure (P2) can be used for decompression and balance. The electronically controlled large-capacity proportional valve according to the first aspect of the patent application, wherein the steady flow hole (121) is arranged in a ring-shaped symmetrical manner with an even number of the central valve (12) as a reference. The stability of the displacement of the main diaphragm (101) is increased.