CN110594480B - Explosion-proof intelligent positioner - Google Patents
Explosion-proof intelligent positioner Download PDFInfo
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- CN110594480B CN110594480B CN201910950847.9A CN201910950847A CN110594480B CN 110594480 B CN110594480 B CN 110594480B CN 201910950847 A CN201910950847 A CN 201910950847A CN 110594480 B CN110594480 B CN 110594480B
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- interface
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- 230000008713 feedback mechanism Effects 0.000 claims abstract description 20
- 230000000149 penetrating effect Effects 0.000 claims abstract description 16
- 238000002955 isolation Methods 0.000 claims abstract description 14
- 238000012546 transfer Methods 0.000 claims description 67
- 238000007789 sealing Methods 0.000 claims description 58
- 239000000758 substrate Substances 0.000 claims description 52
- 238000006243 chemical reaction Methods 0.000 claims description 37
- 230000001105 regulatory effect Effects 0.000 claims description 24
- 238000010892 electric spark Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004663 powder metallurgy Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
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- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
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- 125000006850 spacer group Chemical group 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
- F16K37/0083—For recording or indicating the functioning of a valve in combination with test equipment by measuring valve parameters
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The invention discloses an explosion-proof intelligent positioner which comprises a shell, a piezoelectric valve, a feedback mechanism and a control board, wherein the shell is limited with a first accommodating space and a second accommodating space which are isolated from each other, the first accommodating space and the second accommodating space are provided with public isolation side walls, and the isolation side walls are provided with wire passing holes; the piezoelectric valve is arranged in the first accommodating space; the feedback mechanism and the control board are arranged in the second accommodating space, the feedback mechanism is in signal connection with the control board, and the control board is in signal connection with the piezoelectric valve through a signal wire penetrating through the wire passing hole. According to the flameproof intelligent positioner provided by the embodiment of the invention, the piezoelectric valve is arranged in the first accommodating space, and the feedback mechanism and the control panel are arranged in the second accommodating cavity and are isolated from each other, so that the flameproof and flameproof effects can be improved. In addition, the piezoelectric valve, the feedback mechanism and the control panel are respectively assembled to the first accommodating space and the second accommodating space, so that the assembly is convenient, and the structure is simpler.
Description
Technical Field
The invention relates to the technical field of valve control, in particular to an explosion-proof intelligent positioner.
Background
The electric valve positioner is a main accessory of the pneumatic control valve, and is usually matched with the pneumatic control valve, the electric valve positioner is connected with an actuator (generally, an air cylinder and the like), the actuator is connected with the pneumatic control valve, the actuator pushes a valve rod in the pneumatic control valve to move so as to change the opening degree, the electric valve positioner is linked with the actuator, the valve rod displacement of the pneumatic control valve is converted into an electric signal, the electric signal is fed back to the controller, the electric signal is compared with a set signal by the controller, and when the electric signal and the set signal deviate, the controller changes an output signal to the actuator, so that the actuator acts, and the opening degree of the pneumatic control valve is regulated to a set value. In other words, the valve positioner uses the valve rod displacement as a feedback control signal, thereby realizing the feedback control of the pneumatic regulating valve.
The electric valve positioner comprises a shell, a feedback mechanism and a piezoelectric valve, wherein the feedback mechanism and the piezoelectric valve are arranged in the shell, the feedback mechanism is connected to an actuator, and the displacement of a valve rod of the pneumatic regulating valve is converted into an electric signal along with the action of the actuator and is fed back to the controller, and the controller performs on-off control on the piezoelectric valve according to the electric signal. The piezoelectric valve is generally connected to the actuator through the shell, when the piezoelectric valve is opened, high-pressure gas can be provided for the actuator to push the actuator to act, and the actuator further pushes the valve rod of the pneumatic regulating valve to further regulate the opening degree of the pneumatic regulating valve, so that the feedback control of the pneumatic regulating valve is realized. The inventor discovers that the valve positioner in the related art at least has the problems of complex structure, poor explosion-proof and explosion-proof performances and the like.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent. Therefore, the invention aims to provide an explosion-proof intelligent positioner.
In order to achieve the above object, according to an embodiment of the present invention, an explosion-proof intelligent positioner includes:
The device comprises a shell, a first storage space and a second storage space, wherein the shell is limited with the first storage space and the second storage space which are isolated from each other, the first storage space and the second storage space are provided with a public isolation side wall, and the isolation side wall is provided with a wire through hole;
The piezoelectric valve is arranged in the first accommodating space;
The feedback mechanism and the control board are arranged in the second accommodating space, the feedback mechanism is in signal connection with the control board, and the control board is in signal connection with the piezoelectric valve through a signal wire penetrating through the wire passing hole.
According to the flameproof intelligent positioner provided by the embodiment of the invention, the piezoelectric valve is arranged in the first accommodating space, and the feedback mechanism and the control panel are arranged in the second accommodating cavity and are isolated from each other, so that the flameproof and flameproof effects can be improved. In addition, the piezoelectric valve, the feedback mechanism and the control panel are respectively assembled to the first accommodating space and the second accommodating space, so that the assembly is convenient, and the structure is simpler.
In addition, the flameproof intelligent positioner according to the above embodiment of the present invention may further have the following additional technical features:
According to one embodiment of the invention, the shell comprises a substrate part, wherein a first side surface of the substrate part is provided with an air inlet external interface and an air outlet external interface, and the air inlet external interface and the air outlet external interface are positioned outside the first accommodating space; the top surface of the substrate part is provided with an air inlet inner interface and an air outlet inner interface, and the air inlet inner interface and the air outlet inner interface are positioned in the first accommodating cavity; an air inlet channel which is communicated with the air inlet outer interface and the air inlet inner interface and an air outlet channel which is communicated with the air outlet outer interface and the air outlet inner interface are formed in the substrate part;
The piezoelectric valve is positioned above the substrate part and provided with an air inlet and an air outlet, and an air passage adapter plate is arranged between the piezoelectric valve and the substrate part;
The top surface of the gas circuit adapter plate is provided with a gas inlet upper switching port and a gas outlet upper switching port, the gas inlet upper switching port is opposite to a gas inlet on the piezoelectric valve, and the gas outlet upper switching port is opposite to a gas outlet on the piezoelectric valve; the bottom surface of the gas circuit adapter plate is provided with a gas inlet down-conversion interface and a gas outlet down-conversion interface, the gas inlet down-conversion interface is staggered with the gas inlet up-conversion interface and is opposite to the gas inlet inner interface, and the gas outlet down-conversion interface is staggered with the gas outlet up-conversion interface and is opposite to the gas outlet inner interface; and an air inlet switching channel which is communicated with the air inlet up-conversion interface and the air inlet down-conversion interface and an air outlet switching channel which is communicated with the air outlet up-conversion interface and the air outlet down-conversion interface are formed in the air circuit switching plate.
According to one embodiment of the invention, the piezoelectric valve further comprises an exhaust port;
The second side surface of the substrate part is provided with an exhaust external interface, the exhaust external interface is positioned outside the first accommodating space, the top surface of the substrate part is provided with an exhaust internal interface, the exhaust internal interface is positioned in the first accommodating space, and an exhaust channel which is communicated with the exhaust external interface and the exhaust internal interface is formed in the substrate part;
an exhaust upper transfer port is arranged on the top surface of the gas circuit adapter plate, and the exhaust upper transfer port is opposite to an exhaust port on the piezoelectric valve; an exhaust down-conversion interface is arranged on the bottom surface of the gas circuit adapter plate, and is staggered with the exhaust up-conversion interface and is opposite to the exhaust internal interface; and an exhaust switching channel which is communicated with the exhaust up-conversion interface and the exhaust down-conversion interface is formed in the gas circuit switching plate.
According to one embodiment of the invention, the air inlet inner interface, the air outlet inner interface and the air outlet outer interface are internally provided with isolation filters for isolating electric sparks and filtering particulate matters and moisture in the air.
According to one embodiment of the invention, the shell further comprises a boss part, the boss part is formed on the bottom surface of the base plate part, a pipeline-free air outlet outer interface is arranged on the boss part, and a pipeline-free air outlet channel which is used for communicating the pipeline-free air outlet outer interface with the air outlet inner interface is formed in the base plate part.
According to one embodiment of the invention, the seal is detachably arranged on the ductless outlet external interface to seal the ductless outlet external interface.
According to one embodiment of the invention, the outer outlet port without the pipeline comprises a first hole section and a second hole section which are coaxially connected, wherein the first hole section is adjacent to the bottom surface of the boss part, the diameter of the second hole section is smaller than that of the first hole section, so that a step surface is formed at the joint of the first hole section and the second hole section, and the second hole section is provided with internal threads;
The sealing element comprises a screw rod part, a head part connected to one end of the screw rod part and a first sealing ring sleeved on the screw rod part, the screw rod part is matched with the internal thread of the second hole section, and the head part compresses the first sealing ring on the step surface.
According to one embodiment of the invention, the air conditioner further comprises a flow regulator, wherein the top surface of the base plate part is further provided with a plug hole penetrating to the air outlet channel;
The flow regulating piece is arranged in the inserting hole in a penetrating way so as to be rotationally operated by a user to regulate the size of the air outlet channel.
According to one embodiment of the invention, the flow regulating member comprises a regulating rod and a second sealing ring sleeved on the regulating rod, the lower end of the regulating rod is provided with a vent hole penetrating through the regulating rod in the radial direction, the through hole is communicated with the air outlet channel, and the second sealing ring is clamped between the inner wall of the inserting hole and the outer peripheral surface of the regulating rod.
According to one embodiment of the invention, the device further comprises a first sealing cover and a second sealing cover, wherein the first sealing cover is arranged on the shell to seal the first accommodating space, the second sealing cover is arranged on the shell to seal the second accommodating space, and a transparent window is arranged on the second sealing cover.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a flameproof intelligent positioner according to an embodiment of the present invention;
FIG. 2 is a first exploded view of an flameproof intelligent positioner according to an embodiment of the present invention;
FIG. 3 is a second exploded view of an flameproof intelligent positioner according to an embodiment of the present invention;
FIG. 4 is a partial cross-sectional view of a portion of the structure of an flameproof intelligent positioner according to an embodiment of the present invention;
FIG. 5 is an exploded view of a portion of the structure of an flameproof intelligent positioner according to an embodiment of the present invention;
FIG. 6 is a top view of an air circuit adapter plate in an explosion-proof intelligent positioner according to an embodiment of the present invention;
FIG. 7 is a cross-sectional view taken in the direction A-A of FIG. 6;
FIG. 8 is a sectional view taken in the direction B-B of FIG. 6;
FIG. 9 is a cross-sectional view taken in the direction C-C of FIG. 6;
FIG. 10 is a first partial cross-sectional view of a housing in an flameproof intelligent positioner according to an embodiment of the present invention;
FIG. 11 is a second partial cross-sectional view of a housing in an flameproof intelligent positioner according to an embodiment of the present invention;
FIG. 12 is a bottom view of a piezoelectric valve (with only one air outlet) in an flameproof intelligent positioner according to an embodiment of the present invention;
FIG. 13 is a bottom view of a piezoelectric valve (having two air outlets) in an flameproof intelligent positioner according to an embodiment of the present invention;
FIG. 14 is a schematic view of a structure of another view of a housing in an flameproof intelligent positioner according to an embodiment of the present invention;
FIG. 15 is a third partial cross-sectional view of a housing in an flameproof intelligent positioner according to an embodiment of the present invention;
FIG. 16 is an enlarged view of a portion of FIG. 15 at A;
FIG. 17 is a fourth partial cross-sectional view of a housing in an flameproof intelligent positioner according to an embodiment of the present invention;
FIG. 18 is a schematic view of the structure of an explosion-proof intelligent positioner (with the flip open) according to an embodiment of the present invention;
FIG. 19 is yet another exploded view of an flameproof intelligent positioner according to an embodiment of the present invention.
Reference numerals:
A housing 10;
a substrate portion 101;
an intake external interface 1011;
outlet outer interfaces 1012a, 1012b;
an intake internal interface 1013;
internal outlet ports 1014a, 1014b;
exhaust external interfaces 1015a, 1015b;
internal exhaust ports 1016a, 1016b;
An intake passage H11;
the gas outlet channels H12a, H12b;
Exhaust passages H13a, H13b;
A ductless outlet channel H14;
a boss portion 102;
a ductless outlet outer interface 1021;
a second bore section 1021a;
A first bore section 1021b;
The first accommodating space P11;
a second accommodating space P12;
a third plug 11;
A seal 12;
a screw portion 121;
A head 122;
A first seal ring 123;
a flow rate adjusting member 13;
a vent hole 131;
a spacer filter 14;
a first sealing cover 15;
a second sealing cap 16;
a transparent window 161;
a piezoelectric valve 20;
an air inlet 201;
air outlets 202, 202a, 202b;
exhaust ports 203a, 203b;
The gas circuit adapter plate 30;
an intake upper transfer port 301;
upper air outlet ports 302a, 302b;
exhaust upper interfaces 303a, 303b;
An intake lower transfer port 304;
lower outlet ports 305a, 305b;
exhaust down-converting ports 306a, 306b;
an intake switching passage H31;
The air outlet switching channels H32a and H32b;
Exhaust gas switching passages H33a, H33b;
a first plug 31;
Second plugs 32a, 32b;
Control board 40.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below are exemplary and intended to illustrate the present invention and should not be construed as limiting the invention, and all other embodiments, based on the embodiments of the present invention, which may be obtained by persons of ordinary skill in the art without inventive effort, are within the scope of the present invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
The explosion-proof intelligent positioner according to the embodiment of the invention is described in detail below with reference to the accompanying drawings.
Referring to fig. 1 to 17, the flameproof intelligent positioner provided according to an embodiment of the present invention includes a housing 10, a piezoelectric valve 20, a feedback mechanism (not shown), and a control board 40.
Specifically, the housing 10 defines a first accommodating space P11 and a second accommodating space P12 isolated from each other, the first accommodating space P11 and the second accommodating space P12 have a common isolation sidewall, and the isolation sidewall has a via hole.
The piezoelectric valve 20 is disposed in the first accommodating space P11. The feedback mechanism and the control board 40 are disposed in the second accommodating space P12, the feedback mechanism is in signal connection with the control board 40, and the control board 40 is in signal connection with the piezoelectric valve 20 through a signal line passing through the wire passing hole. In a particular application, the feedback mechanism is coupled to the actuator, converts the displacement of the valve stem of the pneumatic regulator valve into an electrical signal as the actuator moves, and feeds back to the control board 40, which control board 40 controls the opening and closing of the piezoelectric valve 20 in response to the electrical signal.
According to the flameproof intelligent positioner provided by the embodiment of the invention, the piezoelectric valve 20 is arranged in the first accommodating space P11, and the feedback mechanism and the control board 40 are arranged in the second accommodating cavity and are isolated from each other, so that the flameproof and flameproof effects can be improved. In addition, the piezoelectric valve 20 and the feedback mechanism and the control board 40 are assembled to the first and second receiving spaces P11 and P12, respectively, which is convenient to assemble and simpler in structure.
Referring to fig. 19, in an example of the invention, the housing 10 is further provided with a third accommodating space P13, an opening of the third accommodating space P13 is located at one side of the housing 10, and a third sealing cover 19 is provided on the opening. A connecting terminal block 18 is disposed in the third accommodating space P13 for connecting to an external power source. The side wall of the third accommodating space P13 is further provided with two through holes P131, and the through holes P131 are used for connecting the power line to the terminal block 18 after penetrating. In this way, the third accommodating space P13 is used to install the terminal block 18 alone, so that the terminal block 18 can be isolated from other parts, the explosion-proof and flame-proof effects are further improved, and in addition, the wiring is convenient.
Referring to fig. 2 and fig. 4 to fig. 9, in some embodiments of the present invention, the housing 10 includes a base plate 101, a first side of the base plate 101 is provided with an air inlet external port 1011 and air outlet external ports 1012a, 1012b, and the air inlet external port 1011 and the air outlet external ports 1012a, 1012b are located outside the first accommodating space P11; the top surface of the substrate 101 is provided with an air inlet internal interface 1013 and air outlet internal interfaces 1014a and 1014b, and the air inlet internal interface 1013 and the air outlet internal interfaces 1014a and 1014b are positioned in the first accommodating cavity; the substrate 101 has an air inlet channel H11 communicating the air inlet outer port 1011 and the air inlet inner port 1013, and air outlet channels H12a and H12b communicating the air outlet outer ports 1012a and 1012b and the air outlet inner ports 1014a and 1014 b.
That is, the inlet inner interface 1013 of the top surface of the substrate portion 101 communicates with the inlet outer interface 1011 of the first side surface of the substrate portion 101 through the inlet passage H11 therein, and the outlet inner interfaces 1014a, 1014b of the top surface of the substrate portion 101 communicate with the outlet outer interfaces 1012a, 1012b of the first side surface of the substrate portion 101 through the outlet passages H12a, H12b therein. Wherein the air inlet outer port 1011 is for connection to an air supply device, the air outlet outer ports 1012a, 1012b are for connection to an actuator, such as a cylinder, and the air outlet outer ports 1012a, 1012b are connected to air inlet ports of the cylinder. The inlet outer port 1011 and the outlet outer ports 1012a and 1012b are provided on the first side surface of the substrate 101, so as to be connected to external gas source equipment and actuators.
The piezoelectric valve 20 is located above the substrate 101 and has an air inlet 201 and an air outlet 202 (202 a, 202 b), and an air passage adapter plate 30 is disposed between the piezoelectric valve 20 and the substrate 101.
The top surface of the gas circuit adapter plate 30 is provided with a gas inlet upper transfer port 301 and gas outlet upper transfer ports 302a and 302b, the gas inlet upper transfer port 301 is opposite to the gas inlet 201 on the piezoelectric valve 20, and the gas outlet upper transfer ports 302a and 302b are opposite to the gas outlets 202 (202 a and 202 b) on the piezoelectric valve 20; that is, when the air passage adapter plate 30 is disposed between the substrate portion 101 and the piezoelectric valve 20, the upper air inlet port 301 on the top surface of the air passage adapter plate 30 is directly communicated with the air inlet 201 on the bottom surface of the piezoelectric valve 20, and the upper air outlet ports 302a, 302b on the top surface of the air passage adapter plate 30 are directly communicated with the air outlet 202 (202 a, 202 b) on the bottom surface of the piezoelectric valve 20.
The bottom surface of the gas circuit adapter plate 30 is provided with a gas inlet down-conversion port 304 and gas outlet down-conversion ports 305a and 305b, the gas inlet down-conversion port 304 is offset from the gas inlet up-conversion port 301 and is opposite to the gas inlet inner port 1013, and the gas outlet down-conversion ports 305a and 305b are offset from the gas outlet up-conversion ports 302a and 302b and are opposite to the gas outlet inner ports 1014a and 1014 b. That is, when the air passage adapter plate 30 is disposed between the substrate portion 101 and the piezoelectric valve 20, the air inlet down-converting port 304 on the bottom surface of the air passage adapter plate 30 is directly communicated with the air inlet inner port 1013 on the top surface of the substrate portion 101, and the air outlet down-converting ports 305a, 305b on the bottom surface of the air passage adapter plate 30 are directly communicated with the air outlet inner ports 1014a, 1014b on the top surface of the substrate portion 101.
An air inlet switching channel H31 communicating the air inlet upper switching port 301 and the air inlet lower switching port 304, and air outlet switching channels H32a and H32b communicating the air outlet upper switching ports 302a and 302b and the air outlet lower switching ports 305a and 305b are formed in the air circuit switching board 30. That is, the upper air inlet switching port 301 on the top surface of the air path switching plate 30 is arranged in a staggered manner with the lower air inlet switching port 304 on the bottom surface of the air path switching plate 30, and is communicated with the air inlet switching channel H31 in the air path switching plate 30, while the upper air outlet switching ports 302a and 302b on the top surface of the air path switching plate 30 are arranged in a staggered manner with the lower air outlet switching ports 305a and 305b on the bottom surface of the air path switching plate 30, and are communicated with the air outlet switching channels H32a and H32b in the air path switching plate 30.
In other words, since the in-inlet interface 1013 and the out-outlet interfaces 1014a, 1014b on the case 10 do not correspond to the positions of the inlet 201 and the outlet 202 (202 a, 202 b) on the piezoelectric valve 20, in order to achieve the connection, the in-inlet interface 301 and the out-outlet interfaces 302a, 302b on the top surface of the air path adapter plate 30 are arranged to correspond to the positions of the inlet 201 and the outlet 202 (202 a, 202 b) on the bottom surface of the piezoelectric valve 20. And the inlet down-conversion port 304 and the outlet down-conversion ports 305a, 305b on the bottom surface of the gas circuit adapter plate 30 are arranged to correspond to the positions of the inlet internal port 1013 and the outlet internal ports 1014a, 1014b on the substrate portion 101. In this case, the inlet upper transfer port 301 and the inlet lower transfer port 304 form a staggered arrangement, and the outlet upper transfer ports 302a, 302b and the outlet lower transfer ports 305a, 305b form a staggered arrangement. The air inlet transfer channel H31 in the air path transfer plate 30 is used to communicate the air inlet up-transfer interface 301 with the air inlet down-transfer interface 304, and the air outlet transfer channels H32a and H32b in the air path transfer plate 30 are used to communicate the air outlet up-transfer interfaces 302a and 302b with the air outlet down-transfer interfaces 305a and 305b, so that when the air path transfer plate 30 is arranged between the piezoelectric valve 20 and the substrate 101, the air inlet 201 of the piezoelectric valve 20 can be communicated with the air inlet internal interface 1013 on the substrate 101 through the air inlet up-transfer interface 301, the air inlet transfer channel H31 and the air inlet down-transfer interface 304, and the air outlet 202 (202 a and 202 b) of the piezoelectric valve 20 can be communicated with the air outlet internal interfaces 1014a and 1014b on the substrate 101 through the air outlet up-transfer interfaces 302a and 302b, the air outlet transfer channels H32a and H32b and the air outlet down-transfer interfaces 305a and 305 b.
In a specific application, the air inlet external interface 1011 on the first side of the substrate 101 is connected to the air source device, and the air outlet external interfaces 1012a and 1012b are connected to the actuator, so that the air provided by the air source device can sequentially enter the piezoelectric valve 20 through the air inlet external interface 1011, the air inlet channel H11, the air inlet internal interface 1013, the air inlet lower adaptor 304, the air inlet adaptor channel H31, the air inlet upper adaptor 301 and the air inlet 201. The gas output from the gas outlet 202 (202 a, 202 b) of the piezoelectric valve 20 sequentially passes through the gas outlet upper switching ports 302a, 302b, the gas outlet switching channels H32a, H32b, the gas outlet lower switching ports 305a, 305b, the gas outlet inner ports 1014a, 1014b, the gas outlet channels H12a, H12b, and the gas outlet outer ports 1012a, 1012b to enter the actuator, thereby pushing the actuator to act.
In this embodiment, the upper inlet port 301 and the upper outlet ports 302a and 302b on the top surface of the air path adapter plate 30 are respectively opposite to the air inlet 201 and the air outlet 202 (202 a and 202 b) on the piezoelectric valve 20. The air inlet down-converting port 304 and the air outlet down-converting port 305a, 305b on the bottom surface of the air path adapter plate 30 are respectively opposite to the air inlet inner port 1013 and the air outlet inner port 1014a, 1014b, and an air inlet converting channel H31 communicating the air inlet up-converting port 301 and the air inlet down-converting port 304 and air outlet converting channels H32a, H32b communicating the air outlet up-converting ports 302a, 302b and the air outlet down-converting ports 305a, 305b are formed in the air path adapter plate 30, so that when the air path adapter plate 30 is connected between the piezoelectric valve 20 and the substrate 101, the air inlet 201 of the piezoelectric valve 20 can communicate with the air inlet inner port 1013 on the substrate 101 through the air inlet up-converting port 301, the air inlet converting channel H31 and the air inlet down-converting port 304, and the air outlet 202 (202 a, 202 b) of the piezoelectric valve 20 can communicate with the air outlet inner ports a, 1014b on the substrate 101 through the air outlet up-converting ports 302a, 302b, the air outlet down-converting channels H32b and the air outlet down-converting ports 305a, 305 b. In other words, the connection between the piezoelectric valve 20 and the housing 10 can be realized through the air path adapter plate 30, which is convenient to connect, and solves the problem that the air inlet 201, the air outlet 202 (202 a, 202 b) and the air outlet 203a, 203b on the piezoelectric valve 20 cannot be connected due to the fact that the positions of the air inlet and the air outlet on the positioner are not corresponding. In addition, when configuring different piezoelectric valves 20, can through changing different gas circuit conversion boards, in order to realize that different voltage valves can adapt to same locator, improve the commonality of piezoelectric valve 20.
Referring to fig. 2 and 4 to 11, in one embodiment of the present invention, the piezoelectric valve 20 further includes exhaust ports 203a, 203b; the second side of the substrate 101 is provided with exhaust external ports 1015a and 1015b, the exhaust external ports 1015a and 1015b are located outside the first accommodating space P11, the top surface of the substrate 101 is provided with exhaust internal ports 1016a and 1016b, the exhaust internal ports 1016a and 1016b are located in the first accommodating space P11, and exhaust passages H13a and H13b communicating the exhaust external ports 1015a and 1015b with the exhaust internal ports 1016a and 1016b are formed in the substrate 101. That is, the exhaust inner ports 1016a, 1016b on the top surface of the substrate portion 101 are communicated to the exhaust outer ports 1015a, 1015b on the second side surface of the substrate portion 101 through the exhaust passages H13a, H13b therein, and the exhaust outer ports 1015a, 1015b are used for exhausting the other to the outside atmosphere.
The top surface of the air path adapter plate 30 is provided with an exhaust upper adapter port 303a and 303b, and the exhaust upper adapter port 303a and 303b are opposite to the exhaust ports 203a and 203b on the piezoelectric valve 20. That is, when the air passage adapter plate 30 is provided between the substrate portion 101 and the piezoelectric valve 20, the exhaust upper transfer ports 303a, 303b of the top surface of the air passage adapter plate 30 are directly communicated with the exhaust ports 203a, 203b of the bottom surface of the piezoelectric valve 20.
The bottom surface of the gas circuit adapter plate 30 is provided with lower exhaust switching ports 306a and 306b, and the lower exhaust switching ports 306a and 306b are staggered with the upper exhaust switching ports 303a and 303b and are opposite to the inner exhaust ports 1016a and 1016 b; exhaust switching channels H33a and H33b which are communicated with the exhaust upper switching ports 303a and 303b and the exhaust lower switching ports 306a and 306b are formed in the gas circuit switching plate 30. That is, the exhaust upper switching ports 303a and 303b on the top surface of the air path switching board 30 are arranged in a staggered manner with the exhaust lower switching ports 306a and 306b on the bottom surface of the air path switching board 30, and are communicated with the exhaust switching channels H33a and H33b in the air path switching board 30. In a specific application, the gas exhausted from the exhaust ports 203a, 203b of the piezoelectric valve 20 is exhausted through the exhaust upper switching ports 303a, 303b, the exhaust switching channels H33a, H33b, the exhaust lower switching ports 306a, 306b, the exhaust inner ports 1016a, 1016b, the exhaust channels H13a, H13b, and the exhaust outer ports 1015a, 1015b in sequence.
In the present embodiment, the upper exhaust ports 303a and 303b on the top surface of the air path adapter plate 30 are configured to correspond to the positions of the exhaust ports 203a and 203b on the bottom surface of the piezoelectric valve 20, and the lower exhaust ports 306a and 306b on the bottom surface of the air path adapter plate 30 are configured to correspond to the inner exhaust ports 1016a and 1016b on the substrate 101. The exhaust gas transfer channels H33a and H33b in the air path transfer plate 30 are used to communicate the exhaust gas upper transfer ports 303a and 303b with the exhaust gas lower transfer ports 306a and 306b, so that when the air path transfer plate 30 is arranged between the piezoelectric valve 20 and the substrate 101, the exhaust ports 203a and 203b of the piezoelectric valve 20 can communicate with the exhaust gas inner ports 1016a and 1016b on the substrate 101 through the exhaust gas upper transfer ports 303a and 303b, the exhaust gas transfer channels H33a and H33b, and the exhaust gas lower transfer ports 306a and 306b, which is convenient to connect.
It will be appreciated that the outer gas outlet ports 1012a, 1012b, the gas outlet channels H12a, H12b, and the inner gas outlet ports 1014a, 1014b on the substrate portion 101 may be two groups, each group including one outer gas outlet port 1012a (1012 b), one inner gas outlet port 1014a (1014 b), and one gas outlet channel H12a (H12 b) connecting the outer gas outlet port 1012a (1012 b) and the inner gas outlet port 1014a (1014 b). Similarly, the upper air outlet switching ports 302a and 302b, the air outlet switching channels H32a and H32b, and the lower air outlet switching ports 305a and 305b of the air-operated switching board may be two sets, each set including one upper air outlet switching port 302a and 302b, one lower air outlet switching port 305a and 305b, and one air outlet switching channel H32a and H32b that connects the upper air outlet switching ports 302a and 302b and the lower air outlet switching ports 305a and 305 b.
Therefore, the flameproof intelligent positioner can be suitable for different actuators, such as a single-acting cylinder and a double-acting cylinder. Specifically, when the piezoelectric valve 20 with only one air outlet 202 (202 a, 202 b) is used for the single-acting air cylinder, the air outlet external interface 1012a (1012 b) in one of the two groups is connected to the interface of the single-acting air cylinder, and at this time, the single-acting air cylinder can be driven to work. While for a double acting cylinder, a piezo valve 20 with two air outlets 202 (202 a, 202 b) may be employed, one of the two sets of air outlet ports 1012a may be connected to a first port of the double acting cylinder, and the other of the two sets of air outlet ports 1012b may be connected to a second port of the double acting cylinder, such that actuation of the double acting cylinder may be achieved.
The number of the exhaust outer ports 1015a and 1015b, the exhaust passages H13a and H13b, the exhaust inner ports 1016a and 1016b, and the number of the exhaust upper ports 303a and 303b, the exhaust transfer passages H33a and H33b, and the exhaust lower ports 306a and 306b on the air-operated adapter plate may be arranged according to the number of the exhaust ports 203a and 203b of the piezoelectric valve 20, and when the piezoelectric valve 20 has two exhaust ports 203a and 203b, the number of the exhaust outer ports 1015a and 1015b, the exhaust passages H13a and H13b, the exhaust inner ports 1016a and 1016b, and the number of the exhaust upper ports 303a and 303b, the exhaust transfer passages H33a and H33b, and the exhaust lower ports 306a and 306b on the air-operated adapter plate may be arranged.
Referring to fig. 9, in one embodiment of the present invention, the air intake upper switching port 301 is offset from and partially overlapped with the air intake lower switching port 304, and the air intake switching channel H31 is formed in the air intake upper switching port and partially overlapped with the air intake lower switching port and penetrates through the air intake upper switching port and the air intake lower switching port from top to bottom.
That is, the intake upper transfer port 301 and the intake lower transfer port 304 are partially overlapped in a staggered state, and in this structure, the intake transfer passage H31 penetrating from top to bottom can be directly provided in the overlapped portion, so that the processing of the intake transfer passage H31 is facilitated, and the intake upper transfer port and the intake lower transfer port are ensured to be capable of communicating.
Referring to fig. 8, in one embodiment of the present invention, the gas outlet upper switching ports 302a and 302b are offset from and partially overlap with the gas outlet lower switching ports 305a and 305b, and the gas outlet switching channels H32a and H32b are formed in the gas outlet upper switching ports and the gas outlet lower switching ports and penetrate through the gas outlet upper switching ports and the gas outlet lower switching ports from top to bottom.
That is, the gas outlet up-converting port and the gas outlet down-converting port are partially overlapped in a staggered state, and in this structure, gas outlet converting channels H32a and H32b penetrating from top to bottom can be directly provided in the overlapped portion, so that the processing of the gas outlet converting channels H32a and H32b is facilitated, and the gas outlet up-converting ports 302a and 302b and the gas outlet down-converting ports 305a and 305b are ensured to be capable of communicating.
Referring to fig. 7, in another embodiment of the present invention, the air outlet upper switching ports 302a and 302b are offset from and do not overlap with the air outlet lower switching ports 305a and 305b, the air outlet switching channels H32a and H32b extend from the first side surface S31 of the air channel switching board 30 to the second side surface S32 of the air channel switching board 30 so as to communicate the air outlet upper switching ports with the air outlet lower switching ports, and one end of the air outlet switching channels H32a and H32b located on the first side surface S31 of the air channel switching board 30 is plugged and sealed by the first plug 31, and the first side surface S31 is opposite to the second side surface S32.
That is, the gas outlet up-converting port and the gas outlet down-converting port are completely dislocated without overlapping portions, and in this structure, the first side surface S31 of the gas path adapter plate 30 may be drilled on the second side surface S32 of the gas path adapter plate 30 to form gas outlet converting channels H32a, H32b, and the gas outlet converting channels H32a, H32b have junctions with the gas outlet up-converting ports 302a, 302b and the gas outlet down-converting ports 305a, 305b in the extending direction, thereby penetrating the gas outlet up-converting port and the gas outlet down-converting port. And the upper end of the first side surface S31 is sealed by the first plug 31, so that the processing is convenient, and the communication between the air outlet upper switching ports 302a and 302b and the air outlet lower switching ports 305a and 305b is ensured.
Referring to fig. 8, in one embodiment of the present invention, the exhaust gas upper transfer ports 303a and 303b are offset from and do not overlap with the exhaust gas lower transfer ports 306a and 306b, the exhaust gas transfer channels H33a and H33b extend from the third side surface S33 of the gas circuit transfer plate 30 to the fourth side surface S34 of the gas circuit transfer plate 30 so as to communicate the exhaust gas upper transfer ports with the exhaust gas lower transfer ports, and one end of the exhaust gas transfer channels H33a and H33b located at the third side surface S33 of the gas circuit transfer plate 30 is sealed by the second plugs 32a and 32b, and the third side surface S33 is opposite to the fourth side surface S34.
That is, the exhaust gas upper transfer ports 303a, 303b and the exhaust gas lower transfer ports 306a, 306b are completely offset without overlapping portions, and in this structure, the third side surface S33 of the air path transfer plate 30 may be bored on the fourth side surface S34 of the air path transfer plate 30 to form the exhaust gas transfer passages H33a, H33b, which have junctions with the exhaust gas upper transfer ports 303a, 303b and the exhaust gas lower transfer ports 306a, 306b in the extending direction, thereby penetrating the exhaust gas upper transfer ports and the exhaust gas lower transfer ports. The upper end of the third side surface S33 is sealed by the second plugs 32a and 32b, which is convenient to process and ensures that the exhaust upper ports 303a and 303b and the exhaust lower ports 306a and 306b can communicate.
Referring to fig. 7 to 9, in some embodiments of the present invention, a first sealing ring is disposed between the base plate 101 and the gas circuit adapter plate 30, so that the inlet inner interface 1013 is connected with the inlet lower adapter 304 in a sealing manner, the outlet inner interfaces 1014a, 1014b are connected with the outlet lower adapter 305a, 305b in a sealing manner, and the outlet inner interfaces 1016a, 1016b are connected with the outlet lower adapter 306a, 306b in a sealing manner. A second sealing ring is arranged between the gas path adapter plate 30 and the piezoelectric valve 20, so that the gas inlet upper adapter opening 301 is in sealing connection with the gas inlet 201, the gas outlet upper adapter openings 302a and 302b are in sealing connection with the gas outlet 202 (202 a and 202 b), and the gas outlet upper adapter openings 303a and 303b are in sealing connection with the gas outlet 203a and 203 b.
In this way, the first seal ring can ensure the seal between the in-inlet interface 1013 and the in-inlet lower transfer port 304, the seal between the out-outlet inner interfaces 1014a, 1014b and the out-outlet lower transfer ports 305a, 305b, and the seal between the in-exhaust interfaces 1016a, 1016b and the out-exhaust lower transfer ports 306a, 306b are more reliable. The second seal ring can ensure more reliable sealing between the upper inlet port 301 and the inlet port 201, and between the upper outlet ports 302a, 302b and the outlet ports 202 (202 a, 202 b), and between the lower outlet port and the outlet ports 203a, 203 b.
Referring to fig. 2, in one embodiment of the present invention, isolation filters 14 are provided in the inlet inner interface 1013, the outlet inner interfaces 1014a, 1014b, and the outlet outer interfaces 1015a, 1015b to isolate the spark and filter particulates and moisture from the gas. The isolation filter 14 may be a stainless steel powder metallurgy filter, bronze powder metallurgy filter, stainless steel sintered filter, bronze sintered filter, or the like.
On the other hand, the electric control part in the flameproof intelligent positioner may generate electric sparks during operation, and by providing the isolation filter 14 in the in-inlet interface 1013, the out-outlet interfaces 1014a, 1014b and the exhaust ports 203a, 203b, the electric sparks are prevented from entering the in-inlet interface 1013, the out-outlet interfaces 1014a, 1014b and the exhaust ports 203a, 203b, thereby improving the safety and reliability of the flameproof intelligent positioner. On the other hand, when the gas is introduced into and discharged from the gas inlet/outlet inner port 1013, the gas outlet inner ports 1014a and 1014b, and the gas outlet ports 203a and 203b, particulate matter, moisture, and the like in the gas can be filtered out by the separator filter 14.
Referring to fig. 14 to 17, in some embodiments of the present invention, the housing 10 further includes a boss 102, the boss 102 is formed on the bottom surface of the base 101, a non-pipe outlet outer port 1021 is provided on the boss 102, and a non-pipe outlet channel H14 is formed in the base 101 to connect the non-pipe outlet outer port 1021 and the outlet inner ports 1014a, 1014 b.
That is, the outer outlet port 1021 on the bottom surface of the boss 102 is connected to the inner outlet ports 1014a, 1014b on the top surface of the substrate 101 through the inner outlet channel H14, and the outer outlet port 1021 is configured to be directly plugged with the ports on the actuator to connect with the actuator.
In this embodiment, the boss 102 is provided with a non-pipeline air outlet external interface 1021, and the air outlet internal interfaces 1014a and 1014b are communicated with the air outlet internal interfaces 1014a and 1014b through a non-pipeline air outlet channel H14, so that in a specific application, a user can select to connect the air outlet external interfaces 1012a and 1012b to the actuator through pipelines according to different types of the actuator, or directly connect the interfaces on the actuator with the non-pipeline air outlet external interface 1021 in an inserting manner, which is convenient and flexible to connect. In addition, the gas outlet external interface 1021 without a pipeline is used for connection, a pipeline is not needed, the connection is simple and reliable, and the explosion-proof intelligent positioner is inserted on the actuator, so that the occupation of space is reduced.
Referring to fig. 14 and 15, in one embodiment of the present invention, a ductless outlet channel H14 extends from a first side of the boss portion 102 toward a second side of the boss portion 102 to penetrate the outlet inner interfaces 1014a, 1014b and the ductless outlet outer interface 1021, and an end of the ductless outlet channel H14 located at the first side of the boss portion 102 is sealed by the third plug 11, the first side of the boss portion 102 being opposite to the second side of the boss portion 102.
That is, during the processing, the second side surface of the boss portion 102 may be drilled from the first side surface of the boss portion 102 to the second side surface without drilling through the second side surface, so as to form the ductless outlet channel H14, and the ductless outlet channel H14 has an intersection with the outlet inner port and the ductless outlet outer port 1021 in the extending direction, thereby communicating the outlet inner ports 1014a, 1014b with the ductless outlet outer port 1021, and sealing the end on the first side surface of the boss portion 102 with the third plug 11.
Referring to fig. 14 to 16, in one embodiment of the present invention, the sealing member 12 is further included, and the sealing member 12 is detachably disposed on the ductless outlet outer port 1021 to seal the ductless outlet outer port 1021.
In a specific application, if the ductless outer outlet port 1021 is not required, the ductless outer outlet port 1021 may be sealed by the seal 12 so that gas can only be exhausted from the outer outlet ports 1012a, 1012b of the first side of the substrate portion 101 to the actuator, thereby ensuring reliable actuation of the actuator. When the extra-outlet joint 1021 is needed, the sealing element 12 is detached from the extra-outlet joint 1021, and the extra-outlet joint 1021 is plugged into a joint on an actuator, so that the extra-outlet joint 1021 and the extra-outlet joints 1012a and 1012b can be switched and used conveniently and flexibly.
Referring to fig. 16, in one embodiment of the present invention, the outer outlet port 1021 includes a first hole section 1021b and a second hole section 1021a coaxially connected, the first hole section 1021b is adjacent to the bottom surface of the boss 102, and the second hole section 1021a has a smaller diameter than the first hole section 1021b, so that a step surface is formed at the junction of the first hole section 1021b and the second hole section 1021a, and the second hole section 1021a has an internal thread.
The sealing member 12 comprises a screw portion 121, a head portion 122 connected to one end of the screw portion 121, and a first sealing ring 123 sleeved on the screw portion 121, the screw portion 121 is matched with the internal thread of the second hole section 1021a, and the head portion 122 presses the first sealing ring 123 on the step surface.
In this embodiment, on one hand, the screw portion 121 is connected in the outer joint 1021 of the no-pipeline outlet in a threaded connection manner, so that the connection and the disassembly are simple and convenient, and on the other hand, the head 122 is used for pressing the first sealing ring 123 on the step surface, so that a good sealing effect can be achieved, and the outer joint 1021 of the no-pipeline outlet is ensured to maintain a good sealing state and be airtight when not in use.
Referring to fig. 17, in one embodiment of the present invention, the flow regulator 13 is further included, and the top surface of the base plate 101 is further provided with a plug hole penetrating to the air outlet channels H12a, H12 b; the flow regulator 13 is inserted into the insertion hole, so that a user can rotate the flow regulator to adjust the sizes of the air outlet channels H12a and H12 b.
That is, the flow regulator 13 is pivotally disposed in the insertion hole, and the size of the air outlet channels H12a and H12b can be adjusted by rotating the flow regulator 1313, so as to adjust the flow rate of the air flowing through the air outlet channels H12a and H12b, thereby meeting different use requirements.
More specifically, the flow regulator 13 includes a regulating rod and a second sealing ring sleeved on the regulating rod, the lower end of the regulating rod is provided with a vent hole 131 penetrating through the regulating rod along the radial direction, the through hole is communicated with the air outlet channels H12a and H12b, and the second sealing ring is clamped between the inner wall of the plugging hole and the outer circumferential surface of the regulating rod.
When the adjusting rod is rotated, the vent hole 131 at the lower end of the adjusting rod is staggered with the air outlet channels H12a and H12b by a certain angle, so that a part of the vent hole 131 is shielded, namely the vent hole 131 is smaller, and the size of the air flow can be adjusted. And, the air flow rate adjustment accuracy can be made high by utilizing rotation.
Referring to fig. 1 to 3, in one embodiment of the present invention, a first sealing cover 15 and a second sealing cover 16 are further included, the first sealing cover 15 is disposed on the housing 10 to close the first accommodating space P11, the second sealing cover is disposed on the housing 10 to close the second accommodating space P12, and a transparent window 161 is disposed on the second sealing cover 16.
In this way, the first and second receiving spaces P11 and P12 can be sealed by the first and second sealing covers 15 and 16, respectively, and the transparent window 161 facilitates viewing of the display screen on the internal circuit board.
Referring to fig. 18, in some embodiments of the present invention, the second sealing cover 16 is further provided with an operation key 162 and a flip cover 17, wherein the operation key 162 is located on the top surface of the second sealing cover 16, and the flip cover 17 is pivotally connected to one side of the second sealing cover 16 and can be flipped between an open position and a closed position. When the flip 17 is located at the closed position, the flip 17 can be sealed and attached to the top surface of the second sealing cover 16, so as to seal the operation key 162, prevent the operation key 162 from being exposed, and play a role in isolation protection. When the operation key 162 is required to be operated to calibrate the positioner, the flip 17 can be rotated to the opening position, at this time, the flip 17 and the second sealing cover 16 form a certain included angle, and the operation key 162 can be exposed, so that the operation key 162 is convenient to operate, and the operation key is convenient and safe to use. If the operation key 162 is disposed in the second accommodating space P12, the second sealing cover 16 needs to be opened during operation, which is easy to cause the danger such as inflammable or explosive, so that the embodiment can avoid the danger caused by opening the second sealing cover 16 in a high-risk environment (inflammable and explosive place), and has better explosion-proof and flame-proof effects and higher safety.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (7)
1. An explosion-proof intelligent positioner, which is characterized by comprising:
The device comprises a shell, a first storage space and a second storage space, wherein the shell is limited with the first storage space and the second storage space which are isolated from each other, the first storage space and the second storage space are provided with a public isolation side wall, and the isolation side wall is provided with a wire through hole;
The piezoelectric valve is arranged in the first accommodating space;
The feedback mechanism and the control board are arranged in the second accommodating space, the feedback mechanism is in signal connection with the control board, and the control board is in signal connection with the piezoelectric valve through a signal wire penetrating through the wire passing hole;
The shell comprises a substrate part, an air inlet external interface and an air outlet external interface are arranged on the first side surface of the substrate part, and the air inlet external interface and the air outlet external interface are positioned outside the first accommodating space; the top surface of the substrate part is provided with an air inlet inner interface and an air outlet inner interface, and the air inlet inner interface and the air outlet inner interface are positioned in the first accommodating space; an air inlet channel which is communicated with the air inlet outer interface and the air inlet inner interface and an air outlet channel which is communicated with the air outlet outer interface and the air outlet inner interface are formed in the substrate part;
The piezoelectric valve is positioned above the substrate part and provided with an air inlet and an air outlet, and an air passage adapter plate is arranged between the piezoelectric valve and the substrate part;
The top surface of the gas circuit adapter plate is provided with a gas inlet upper switching port and a gas outlet upper switching port, the gas inlet upper switching port is opposite to a gas inlet on the piezoelectric valve, and the gas outlet upper switching port is opposite to a gas outlet on the piezoelectric valve; the bottom surface of the gas circuit adapter plate is provided with a gas inlet down-conversion interface and a gas outlet down-conversion interface, the gas inlet down-conversion interface is staggered with the gas inlet up-conversion interface and is opposite to the gas inlet inner interface, and the gas outlet down-conversion interface is staggered with the gas outlet up-conversion interface and is opposite to the gas outlet inner interface; an air inlet switching channel which is communicated with the air inlet up-conversion interface and the air inlet down-conversion interface and an air outlet switching channel which is communicated with the air outlet up-conversion interface and the air outlet down-conversion interface are formed in the air circuit switching board;
The piezoelectric valve further comprises an exhaust port; the second side surface of the substrate part is provided with an exhaust external interface, the exhaust external interface is positioned outside the first accommodating space, the top surface of the substrate part is provided with an exhaust internal interface, the exhaust internal interface is positioned in the first accommodating space, and an exhaust channel which is communicated with the exhaust external interface and the exhaust internal interface is formed in the substrate part;
an exhaust upper transfer port is arranged on the top surface of the gas circuit adapter plate, and the exhaust upper transfer port is opposite to an exhaust port on the piezoelectric valve; an exhaust down-conversion interface is arranged on the bottom surface of the gas circuit adapter plate, and is staggered with the exhaust up-conversion interface and is opposite to the exhaust internal interface; an exhaust switching channel which is communicated with the exhaust up-conversion interface and the exhaust down-conversion interface is formed in the gas circuit switching plate;
And isolation filters are arranged in the air inlet inner interface, the air outlet inner interface and the air outlet outer interface and are used for isolating electric sparks and filtering particulate matters and moisture in the air.
2. The flameproof intelligent positioner according to claim 1, wherein the housing further comprises a boss portion formed on the bottom surface of the base plate portion, a ductless air outlet external interface is formed on the boss portion, and a ductless air outlet channel which communicates the ductless air outlet external interface with the air outlet internal interface is formed in the base plate portion.
3. The flameproof intelligent positioner according to claim 2, further comprising a sealing member detachably provided on the ductless outlet external interface to seal the ductless outlet external interface.
4. The flameproof intelligent positioner according to claim 3, wherein the gas outlet external interface without a pipeline comprises a first hole section and a second hole section which are coaxially connected, the first hole section is adjacent to the bottom surface of the boss part, the diameter of the second hole section is smaller than that of the first hole section, so that a step surface is formed at the joint of the first hole section and the second hole section, and the second hole section is provided with internal threads;
The sealing element comprises a screw rod part, a head part connected to one end of the screw rod part and a first sealing ring sleeved on the screw rod part, the screw rod part is matched with the internal thread of the second hole section, and the head part compresses the first sealing ring on the step surface.
5. The flameproof intelligent positioner according to claim 1, further comprising a flow regulator, wherein the top surface of the base plate portion is further provided with a plug hole penetrating to the air outlet channel;
The flow regulating piece is arranged in the inserting hole in a penetrating way so as to be rotationally operated by a user to regulate the size of the air outlet channel.
6. The explosion-proof intelligent positioner according to claim 5, wherein the flow regulator comprises a regulating rod and a second sealing ring sleeved on the regulating rod, a vent hole penetrating through the regulating rod in the radial direction is arranged at the lower end of the regulating rod, the vent hole is communicated with the air outlet channel, and the second sealing ring is clamped between the inner wall of the plug hole and the outer circumferential surface of the regulating rod.
7. The flameproof intelligent positioner according to claim 1, further comprising a first sealing cover and a second sealing cover, wherein the first sealing cover is arranged on the housing to close the first accommodating space, the second sealing cover is arranged on the housing to close the second accommodating space, and a transparent window is arranged on the second sealing cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910950847.9A CN110594480B (en) | 2019-10-08 | 2019-10-08 | Explosion-proof intelligent positioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910950847.9A CN110594480B (en) | 2019-10-08 | 2019-10-08 | Explosion-proof intelligent positioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110594480A CN110594480A (en) | 2019-12-20 |
| CN110594480B true CN110594480B (en) | 2024-09-06 |
Family
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| CN211525657U (en) * | 2019-10-08 | 2020-09-18 | 深圳市摩控自动化设备有限公司 | Flame-proof type intelligent positioner |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3576280B2 (en) * | 1995-07-26 | 2004-10-13 | 甲南電機株式会社 | Electro-pneumatic conversion mechanism of positioner for actuator position control |
| US6422532B1 (en) * | 2000-03-01 | 2002-07-23 | Invensys Systems, Inc. | Severe service valve positioner |
| US20090283160A1 (en) * | 2008-05-02 | 2009-11-19 | James Fishwick | Fluid flow control device and control circuit |
| WO2016037493A1 (en) * | 2014-09-12 | 2016-03-17 | 厦门科际精密器材有限公司 | Air pump |
| CN206072490U (en) * | 2016-10-08 | 2017-04-05 | 武汉拓优测控科技有限公司 | A kind of flame-proof type intelligent valve positioner of compatible Nozzle flapper valve and piezo electric valve |
| CN206347183U (en) * | 2016-11-03 | 2017-07-21 | 杭州赛密科阀门制造有限公司 | A kind of Explosion-proof valve nonshared control unit |
| CN206347184U (en) * | 2016-11-03 | 2017-07-21 | 杭州赛密科阀门制造有限公司 | It is a kind of that reliable and stable Explosion-proof valve nonshared control unit is installed |
| CN208565730U (en) * | 2018-07-13 | 2019-03-01 | 深圳市摩控自动化设备有限公司 | Electropneumatic valve positioner |
| CN108612897B (en) * | 2018-07-13 | 2024-05-17 | 深圳市摩控自动化设备有限公司 | Positioner for electric valve |
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| CN211525657U (en) * | 2019-10-08 | 2020-09-18 | 深圳市摩控自动化设备有限公司 | Flame-proof type intelligent positioner |
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