CN111810703B - A fully automatic pneumatic control device - Google Patents
A fully automatic pneumatic control device Download PDFInfo
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- CN111810703B CN111810703B CN202010876945.5A CN202010876945A CN111810703B CN 111810703 B CN111810703 B CN 111810703B CN 202010876945 A CN202010876945 A CN 202010876945A CN 111810703 B CN111810703 B CN 111810703B
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- 239000007788 liquid Substances 0.000 claims abstract description 44
- 238000006243 chemical reaction Methods 0.000 claims abstract description 21
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 16
- 230000003111 delayed effect Effects 0.000 claims abstract description 3
- 238000007789 sealing Methods 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 45
- 238000013461 design Methods 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 abstract description 8
- 239000008358 core component Substances 0.000 abstract description 3
- 239000010865 sewage Substances 0.000 description 39
- 239000000306 component Substances 0.000 description 23
- 230000007246 mechanism Effects 0.000 description 13
- 238000004891 communication Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 9
- 238000003825 pressing Methods 0.000 description 8
- 239000012528 membrane Substances 0.000 description 7
- 230000009471 action Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- 238000013016 damping Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 230000010354 integration Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000000737 periodic effect Effects 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000003287 bathing Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000010866 blackwater Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000010797 grey water Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
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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
- F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
- F16K31/1268—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like with a plurality of the diaphragms
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Driven Valves (AREA)
Abstract
本发明涉及一种全自动气动控制装置，包括壳体、安装在壳体内的执行组件及动力组件、触发动力组件驱动执行组件工作的控制组件；所述执行组件、动力组件及控制组件由上至下依次分布；所述执行组件包括用于实现空气及真空通断的阀芯组件；所述动力组件包括用于实现延时关闭的针阀组件及用于实现快速开启的滑阀组件；所述控制组件包括液位压力传感器、稳压缓冲单元及动能转换单元；本发明主要由三大核心组件构成，包括执行组件、动力组件及控制组件，能够实现结构设计的紧凑性及可靠性；内部形成的空间具有主动的、可靠的、有效的集水和排水技术与结构，且内部合理的流通管路设计，阻力小效率高。
The present invention relates to a fully automatic pneumatic control device, comprising a shell, an actuator and a power assembly installed in the shell, and a control assembly for triggering the power assembly to drive the actuator to work; the actuator, power assembly and control assembly are distributed in sequence from top to bottom; the actuator comprises a valve core assembly for realizing air and vacuum on and off; the power assembly comprises a needle valve assembly for realizing delayed closing and a slide valve assembly for realizing rapid opening; the control assembly comprises a liquid level pressure sensor, a voltage stabilizing buffer unit and a kinetic energy conversion unit; the present invention is mainly composed of three core components, including an actuator, a power assembly and a control assembly, which can realize the compactness and reliability of the structural design; the space formed inside has active, reliable and effective water collection and drainage technology and structure, and the internal reasonable circulation pipeline design has small resistance and high efficiency.
Description
Technical Field
The invention relates to the technical field of vacuum sewage valve control systems in vacuum sewage continuous collection, temporary storage and periodic transportation systems, wherein the vacuum sewage continuous collection, temporary storage and periodic transportation systems belong to vacuum wells, a temporary sewage collection device for periodically discharging sewage by adopting a vacuum sewage valve is arranged, sewage in the sewage collection device can be conveyed into a downstream vacuum collection pipeline network, and is controlled by adopting a differential pressure driving control method, namely a pneumatic control method.
Background
In the technical field of vacuum domestic sewage collection, transportation and treatment, vacuum domestic sewage collection is the forefront technical field, and includes a technical application scenario that domestic sewage (such as black water represented by wastewater sources of urinal, toilet bowl and the like, and grey water represented by wastewater sources of kitchen, changing and bathing and the like) from a building (such as rural one-storey house, tile house, building, cement house, villa, urban residential building, building and the like) is transported to a remote sewage tank or vacuum collection and transportation pipeline system by means of a pipe based on a vacuum or negative pressure airflow transportation force principle of sucking air at one end and exhausting air at the other end.
A typical solution for implementing this application scenario is to use a temporary sewage tank having an inlet connected to a building sewage outlet, and a sewage suction inlet connected to a vacuum sewage delivery line (or vacuum source, vacuum sewage tank, etc.), and a vacuum sewage valve (or vacuum valve, main valve) connecting the sewage suction inlet to the vacuum sewage delivery line, the vacuum sewage valve having a control system or device whose basic operating (or working) flow is to suck and empty sewage when the sewage level in the tank reaches a first preset value (or high water level) by a controller applying a vacuum force to the vacuum sewage valve until the sewage level in the sewage tank falls to another preset value (or low water level), the control system closing the vacuum sewage valve, the system being defined as a continuous vacuum sewage collection, temporary storage and periodic delivery system, simply referred to as a vacuum collection well, or vacuum well.
In general, in the technical field of liquid or sewage collection, vacuum technology is a known technology for collecting liquid or sewage, in the past 130 years, a great deal of foreign patent documents relate to the technical fields of subdivision, and although the domestic technology accumulation time is relatively short, the development of a vacuum blow-off valve control system, especially a differential pressure type pneumatic controller, is very rapid in recent years, and for domestic and foreign design, the vacuum blow-off valve control system is generally divided into three main core components, an execution component, a control component and a power component, wherein:
(1) The execution assembly is used for realizing continuous intermittent connection of vacuum and air to the output interface, so that the output interface finally realizes the requirement of intermittent connection of vacuum and air in turn;
Currently, there are mainly two types of diaphragm-type reversing valve structures for realizing the function, namely a diaphragm-type reversing valve structure with a spring above a diaphragm and a diaphragm-type reversing valve structure with a spring below the diaphragm, wherein the diaphragm-type reversing valve structure with a spring above the diaphragm can refer to the invention patent of Foreman et al, the European patent of European patent No. EP0519523A2 (1992), U.S. Pat. No. 5069243 (1989) and the like, the invention patent of Huisma et al, the invention patent of European patent No. EP0152386B1 (1984), the invention patent of Foreman et al and the invention patent of 1981, the invention patent of U.S. Pat. No. 4373838 (1981), the invention patent of FEATHERINGILL et al, the invention patent of U.S. Pat. No. 5570715 (1995), the invention patent of John et al and the invention patent of 1976, the invention patent of U.S. Pat. No. 3998736 (1976) and the like;
the prior art has the following defects:
a. The drainage effect in the chamber is not good, for example, the problem of concentrated water and difficult drainage in the chamber in European Union patent number EP0519523A2 is that the suction opening 38 is arranged at the top of the chamber, and the drain pipe 39 is particularly added for draining the condensed water accumulated in the chamber 40, but the groove of the corrugated membrane 38 is very close to the inlet of the drain pipe 39 after the corrugated membrane 38 acts so as to drain the water;
b. The drainage in the chamber is not thorough, for example, the grooves of the corrugated membrane 38 of European patent No. 0519523A2 are very close to the inlet of the drain pipe 39 after the corrugated membrane acts so as to drain the water; however, too close a distance causes the end of the drain pipe 39 to absorb the corrugated diaphragm 48 together during the high-speed air extraction process, so that the corrugated diaphragm cannot further rise, and further the function of the executing assembly is affected to realize the switching between air and vacuum, so that in the actual use situation, the gap is relatively large, and water accumulation remains, while the output port 122 in U.S. Pat. No. 5,182 is communicated with the control chambers in various valves, while the vacuum port 96 is circulated or communicated to the interface 122 is only subjected to two bending steps, which is a preferred scheme, but the installation mode of the controller is horizontally installed, namely 96 and 122 are installed vertically on the ground, and the problem exists that the impact force of air flow of the air of the 122 pipeline on the 114 valve core condenses moisture in the air into condensed water, and the condensed water is mixed with impurities such as dust in the air and adheres to the 114 valve core sealing contact edge, so that the sealing is poor, and thus the air leakage phenomenon occurs;
c. The vacuum is not rapidly introduced, for example, the outlet 51 of the European patent No. 0519523A2 and the vacuum pipeline (the pipeline below the sealing ring 43) are bent for a plurality of times, the vacuum pipeline reaches the outlet 51 from the vacuum inlet (at the side) of the pneumatic controller of the vacuum blow-off valve, and the air passage turns for 4 times by 90 degrees, and as a result, the circulation resistance of the air passage pipeline is large, so that the air in the control chambers in the various valves with communicated output ports can not be rapidly and thoroughly discharged through the vacuum inlet, while the output port 122 of the U.S. patent No. 4373838 is communicated with the control chambers in the various valves, and the vacuum port 96 is circulated or communicated to the interface 122 only is bent for two times, so that the working effect is further improved relatively;
d. The integration with other functional components cannot be achieved, for example, the water collecting and draining functional module or part (simply called water collecting and draining or water collecting and draining part) in EP0519523A2 is configured independently of the pneumatic controller, takes up more space than the integrated part, requires more parts such as mounting parts and connecting parts, and the like, and the vacuum port is positioned below the air port, so that the integrated design is not favored, the water collecting and draining function requires a larger chamber, the internal height of the effective chamber is extremely important under the condition that the controller is inconvenient, the air inlet is positioned above the vacuum port, which means that the height of the water collecting and draining chamber is shortened, and the water collecting effect is reduced, and the corrugated diaphragm valve core of US4373838 is horizontally operated, and each chamber is horizontally arranged, so that the water collecting and draining component based on gravity concentration for collecting condensed water cannot realize the functions.
(2) The control component is used for realizing the change of the volume of the related chamber under the control of the sensor so as to trigger the execution of the power device, and the basic functional technical requirements are that the reaction is sensitive and the reset is reliable;
At present, a control component for realizing the function comprises a sensor, a voltage stabilizing buffer and a kinetic energy conversion unit; wherein, the sensor is designed based on the principle of air pressure change caused by liquid level change; the kinetic energy conversion unit is a part for converting liquid level pressure energy into displacement, so as to provide a control signal for the power device;
The kinetic energy conversion devices are based on diaphragm structures, but the details in many aspects are different, and the most representative technology mainly has two structural types, namely the invention patent applied by Foreman et al, the invention patent of U.S. Pat. No. 5069243 (1989) and the invention patent applied by Foreman et al, and the invention patent of U.S. Pat. No. 4373838 (1981);
the prior art has the following defects:
a. The reliability and effectiveness of the drainage in the chamber are poor, for example, the liquid level controller in US5069243 has the problems that the connecting pipeline needs to be bent once, the connecting pipeline is bent and deformed in the long-time use process, the joint 25 is damaged, the raised pipeline joint is unfavorable for the backflow drainage of condensed water in the pipeline, the problem is serious, the condensate well in the chamber 29 enters the chamber through the damping hole of the corrugated diaphragm 30 and gradually accumulates through the pipeline 32, the accumulated condensate water cannot return or drain through the original path due to the fact that the joint 25 is arranged at the top, and the drainage difficulty of the condensate water is further improved due to the fact that the fluctuation of the liquid level in the liquid level sensor is not remarkable, particularly the existence of the corrugated damping hole 30.
In the U.S. patent No. 4373838, the drainage problem is explored or improved to a certain extent, the condensed water in the chamber 78 can be discharged from the pipeline communicated with the liquid level sensor through the damping hole 118 at the lower end of the controller, more importantly, the liquid level controller joint is horizontally arranged, so that the condensed water is discharged from the chamber 80, and the condensed water in the chamber 79 can be discharged out of the controller under the action of the vacuum suction pipe 120, but the hole 88 is not at the tangent position of the bottommost part of the chamber of the horizontally arranged controller, but is close to one point in the center direction, so that certain condensed water can be accumulated in the chamber 79, and meanwhile, the vacuum suction pipe 120 in the chamber 80 is vertically arranged, so that the vacuum suction speed is reduced under the action of the throttle valve 120, particularly the absorption effect of the condensed water on the surface of the chamber, particularly the bottom surface of the chamber, and the accumulated condensed water can not be thoroughly and effectively emptied;
b. The liquid level fluctuation pressure stabilizing function is poor in reliability and effectiveness, for example, in the U.S. patent No. 4373838, the liquid level fluctuation pressure stabilizing is realized by the damping hole 118, the scheme is simple in structure and poor in effect, because the sudden increase of the air pressure caused by the sudden increase of the liquid level accelerates the air to be sprayed out of the damping hole 118, a certain pressure stabilizing effect is further achieved in a certain pressure range, the influence of the pressure increase and the pressure decrease on the corrugated diaphragm 86 is the same, the directions are opposite, the technical aim is that the pressure stabilizing effect is good, slow and stable when the air pressure is increased, the air pressure is fast and continuous when the air pressure is decreased, and the speed when the air pressure is decreased is the same as the speed when the air pressure is increased in practical situation;
c. the structural arrangement of the orifice is not reasonable, for example, in US4373838, different parts 118 are required to be configured to cope with the different high liquid level differences of different vacuum well sewage tanks, and the parts are special-shaped pieces, are inconvenient to store, and have large die opening cost due to the existence of small holes.
(3) The power assembly is used for realizing intermittent connection of vacuum and air to the execution assembly under the control of the control assembly, so as to meet the requirement of quick switching, and is similar to a two-position two-way reversing valve or a two-position three-way reversing valve, wherein two input interfaces are respectively connected with vacuum and/or air, one output interface is provided, and the output interface is connected with the input interface or the control interface of the execution assembly;
The power assembly mainly comprises an air on-off or vacuum switching mechanism, a time-delay closing mechanism and the like, wherein the air on-off or air switching mechanism is indirectly triggered by a sensor from an executing assembly so as to realize power driving of pressure difference, the energy-power conversion mechanism is a device for realizing the pressure difference between the vacuum and the atmosphere through the air on-off or air switching mechanism so as to serve as a device for driving the executing assembly, the purpose of quick opening is realized, the energy-power conversion mechanism can adopt a piston type slide valve structure or a diaphragm type slide valve structure and other working principle structures, namely a two-position two-way reversing valve or a two-position three-way reversing valve, the piston type slide valve structure is compact in size in consideration of the diaphragm type structure, meanwhile, the energy-power conversion mechanism adopts a two-position two-way piston type slide valve reversing valve in consideration of time delay adjustment of the air, an input interface is connected with a vacuum pipeline, the output interface is provided with an input interface or a control interface connected with the executing assembly, the time-delay closing mechanism is used for prolonging the closing time of the controller, the time-delay closing mechanism is used for closing after a period of time delay, liquid level in a vacuum collecting well is beneficial to lowering to the liquid level position, the vacuum collecting well is reduced, the working distance is reduced, and the high-speed is reduced, and the service life of the vacuum collecting well is prevented from being degraded frequently due to the fact that the vacuum collecting well is lowered.
The most representative techniques in the prior art mainly have two structural types, namely, the invention patent applied by Foreman et al, the invention patent of which is US5069243 (1989), the invention patent applied by Foreman et al, the invention patent of which is US4373838 (1981);
the prior art has the following defects:
a. the sheet metal part has poor reliability, for example, the on-off switch mechanism in the U.S. Pat. No. 3,218 has two schemes, namely a duckbill valve structure and a spring lever return force clamp structure, and the duckbill valve structure is manufactured by adopting rubber parts, and is easy to block or leak gas although the structure is compact, so the environmental adaptability is poor; the technical scheme of the on-off switch mechanism in U.S. Pat. No. 4373838 is a spring lever return force clamp structure, which has more complex structure, and particularly has the defects of hinge type sheet metal parts, high sensitivity, easy abrasion and easy rusting of a rotating shaft, and the like, particularly has the defects that the part corrosivity and the matched air tightness are aggravated when the air with high humidity and dust enters the controller;
b. The water collecting and draining functions are unreliable, for example, the time-delay closing mechanism structure scheme in U.S. patent No. 5069243 is that a speed-regulating needle valve is arranged on an air pipeline, and vacuum is turned on and off, the time-delay closing mechanism structure scheme in the technology in U.S. patent No. 4373838 is just opposite to the former, namely, the speed-regulating needle valve is arranged on the vacuum pipeline, and air is turned on and off, because the vacuum pressure can be influenced by a plurality of factors, such as the instant pressure fluctuation on the vacuum pipeline, of the on-off state of a vacuum blowdown valve, the backflow of sewage in the sewage suction pipe impacts a liquid level sensor after the operation of the vacuum blowdown valve is finished, the liquid level fluctuation is caused, and further, the control is more serious, an upper vacuum control pipeline connector is arranged on the top of the device and is close to the bottom of a chamber 80 through a suction pipe 120, so that the problems of water accumulation and poor blowdown exist.
Aiming at a series of problems existing in the prior art, such as difficult or incomplete drainage of condensation accumulated water in a cavity, unreasonable design of related ventilation pipelines, poor design functionality and reliability of the whole structure, and the like, the invention develops a full-automatic pneumatic control device to solve the problems existing in the prior art, and the technical proposal which is the same as or similar to the invention is not found through searching.
Disclosure of Invention
The invention aims to provide a full-automatic pneumatic control device to solve the problems that in the prior art, accumulated water is difficult to discharge or is not completely discharged, internal pipelines are unreasonable in design, and the functionality and reliability are poor.
The technical scheme is that the full-automatic pneumatic control device comprises a shell, an execution assembly, a power assembly and a control assembly, wherein the execution assembly, the power assembly and the control assembly are installed in the shell, the control assembly is used for triggering the power assembly to drive the execution assembly to work, the execution assembly, the power assembly and the control assembly are sequentially distributed from top to bottom, the execution assembly comprises a valve core assembly used for realizing air and vacuum on-off, the power assembly comprises a needle valve assembly used for realizing time delay closing and a slide valve assembly used for realizing quick opening, and the control assembly comprises a liquid level pressure sensor, a pressure stabilizing buffer unit and a kinetic energy conversion unit.
Preferably, the shell comprises an upper shell, a middle shell and a lower shell which are sequentially arranged from top to bottom, a first cavity, a second cavity, a third cavity, a fourth cavity, a fifth cavity and a sixth cavity which are sequentially communicated from top to bottom are arranged in the middle shell, a first inner hole is arranged between the first cavity and the second cavity, a second inner hole is arranged between the second cavity and the third cavity, a third inner hole is arranged between the third cavity and the fourth cavity, a fourth inner hole is arranged between the fifth cavity and the sixth cavity, first air passage channels with two ends respectively communicated with the fourth inner hole and the sixth cavity are arranged on the side edges of the fourth inner hole, an air flow passage is further arranged in the middle shell, an air inlet and an air interface of the valve body which are communicated with the air flow passage, an air control interface of the valve body which is communicated with the third cavity, and a vacuum inlet and outlet which are communicated with the fourth cavity are arranged on the side walls of the middle shell, and the air flow passage is further communicated with the second cavity and the sixth cavity.
The valve core assembly comprises a valve core body, a first reset spring and a first diaphragm, wherein the valve core body sequentially penetrates through a first inner hole, a second inner hole and a third inner hole and extends into a first cavity, a second cavity, a third cavity and a fourth cavity, rubber sealing rings used for forming sealing with the side wall of the valve core body are nested on the inner walls of the first inner hole, the second inner hole and the third inner hole, a sealing pressing plate is arranged on the valve core body in the third cavity in an integrated structure, through grooves are formed in the side wall of the valve core body at the upper end and the lower end of the sealing pressing plate, the first reset spring is sleeved on the outer wall of the valve core body in the second cavity, the first diaphragm is arranged in the fourth cavity, the middle part of the first reset spring is fixedly connected with the lower end of the valve core body, the outer end in the circumferential direction of the first reset spring is fixedly connected with the inner wall of the fourth cavity, and the fourth cavity is divided into a first upper cavity and a first lower cavity.
Preferably, a throttle channel communicated with the fifth cavity is arranged on the side wall of the middle shell opposite to the fifth cavity, the throttle channel is communicated with the vacuum inlet and outlet, and the needle valve assembly is nested and matched in the throttle channel and comprises a needle valve body extending into the fifth cavity and an adjusting knob fixed on one side of the needle valve body far away from the fifth cavity.
The sliding valve assembly comprises a valve rod, a second reset spring and a second diaphragm, wherein the valve rod is nested and matched with a fourth inner hole in a sliding mode, a second air passage channel communicated with the side wall and the upper end face is arranged between the side wall and the fourth inner hole, the second reset spring is arranged in the fourth inner hole at the upper end of the valve rod, the second diaphragm is arranged in a sixth cavity, the middle part of the second diaphragm is fixedly connected with the lower end part of the valve rod, the outer end of the second diaphragm in the circumferential direction is fixedly connected with the inner wall of the sixth cavity, and the sixth cavity is divided into a second upper cavity and a second lower cavity.
Preferably, the lower end of the lower shell is fixedly provided with a connector, a seventh cavity is arranged between the upper end of the connector and the lower end face of the lower shell, a diversion hole is arranged between the seventh cavity and the sixth cavity, a sensor interface communicated with the seventh cavity is arranged between the seventh cavity and the side wall, the liquid level pressure sensor is connected with the sensor interface, the pressure stabilizing buffer unit comprises a region formed by the connector and the seventh cavity, a third diaphragm is arranged in the seventh cavity, the outer end of the third diaphragm in the circumferential direction is fixedly connected with the inner wall of the seventh cavity, a through hole communicated with the upper end and the lower end of the third diaphragm is arranged on the end face, and the kinetic energy conversion unit comprises a sixth cavity and a region formed by the second diaphragm.
Compared with the prior art, the invention has the advantages that:
(1) The invention mainly comprises three core components, including an execution component, a power component and a control component, can realize the compactness and reliability of structural design, has active, reliable and effective water collecting and draining technology and structure in the space formed inside, has reasonable circulation pipeline design inside, small resistance and high efficiency.
(2) The third middle shell which is connected with the valve body pneumatic control interface in a matching way can realize vortex inflow and jet outflow of air flow, and is convenient for discharging condensed water vapor in the structure, thereby effectively realizing water collection and drainage functions, realizing structural combination of the execution assembly and a water collection and drainage functional component, realizing functional integration and avoiding independent configuration.
(3) The power component is used for realizing intermittent connection of vacuum and air to the execution component and meeting the requirement of quick switching, the invention adopts the piston type slide valve component to carry out quick opening control and adopts the needle valve component to carry out delay closing control, the technology of adopting traditional sheet metal component to open control fast is avoided, the part quantity has significantly reduced, and the structure is compacter, and the reliability is stronger.
(4) The control component is used for realizing the volume change of a second upper cavity and a second lower cavity in the device under the control of the liquid level pressure sensor, further triggering the power component to drive the execution component to work, the control component has a reliable liquid level fluctuation voltage stabilization function, namely, a third membrane with a through hole is adopted, voltage stabilization during voltage boosting and rapid pressure relief during voltage reduction can be realized, meanwhile, a sensor interface is positioned at the bottom of the full-automatic pneumatic control device, condensed water vapor in a sixth cavity can be sequentially discharged along a guide hole, the through hole and the sensor interface, the water collecting and draining function is effectively realized, and the through hole on the third membrane has the drainage function and the ventilation function, the function integration is realized, and the reliability is high.
Drawings
The invention is further described below with reference to the accompanying drawings and examples:
FIG. 1 is a schematic view of a fully automatic pneumatic control device of the present invention installed in a vacuum well;
FIG. 2 is a front view, partially in section, of a fully automatic pneumatic control device according to the present invention;
FIG. 3 is a front view, partially in section, of a housing according to the present invention;
FIG. 4 is a top view of a third intermediate housing according to the present invention;
FIG. 5 is a front view of an installation section of the actuator/valve cartridge assembly of the present invention;
FIG. 6 is a schematic structural view of the valve core body according to the present invention;
FIG. 7 is a front view in section of the power assembly of the present invention;
FIG. 8 is a schematic view of the upper end of the deflector ring according to the present invention;
FIG. 9 is a schematic view of the lower end of the deflector ring according to the present invention;
FIG. 10 is a partial cross-sectional view of a control assembly according to the present invention;
FIG. 11 is an exploded view of a 1/4 side cross-sectional structure of a first middle housing, a second middle housing, and a third middle housing and an airflow path diagram according to the present invention;
FIG. 12 is a circuit diagram illustrating communication between an air inlet and an air flow path according to the present invention;
FIG. 13 is a schematic view of the bottom structure of the fourth middle housing according to the present invention;
FIG. 14 is a schematic view showing a structure of a sealing strip and a 1/2 cross-sectional structure of a fourth middle case according to the present invention;
FIG. 15 is a circuit diagram of a throttle passage communicating with a vacuum port according to the present invention;
FIG. 16 is a drain line diagram within the control assembly of the present invention;
FIG. 17 is a cross-sectional view of the power assembly of the present invention in a non-operative condition;
FIG. 18 is a cross-sectional view of the power assembly of the present invention in an operative condition;
FIG. 19 is a schematic view of the operating principle of the actuator assembly of the present invention;
FIG. 20 is a cross-sectional view of an actuator assembly according to the present invention in a non-operative condition;
FIG. 21 is a cross-sectional view of an actuator assembly according to the present invention in an operative condition;
FIG. 22 is a flow-through circuit diagram of the third middle housing of the present invention when the upper end of the third middle housing is drained;
fig. 23 is a flow path diagram of the third middle case according to the present invention when the lower end portion is drained.
Wherein, 01, a vacuum well, 02, a full-automatic pneumatic control device;
1. a housing;
11. An upper shell, 12, a middle shell, 13, a lower shell, 14, an air channel, 15, an air inlet, 16, a valve body air interface, 17, a valve body air control interface, 18 and a vacuum inlet and outlet;
101. First, 102, second, 103, third, 104, fourth, 1041, first upper, 1042, first lower, 105, fifth, 106, sixth, 1061, second upper, 1062, second lower;
111. A first inner bore 112, a second inner bore 113, a third inner bore 114, a fourth inner bore 115, a first gas passage 116, a throttle passage;
121. a first middle case 122, a second middle case 123, a third middle case 124, a fourth middle case 125, and a fifth middle case;
1241. diversion trenches, 1242, sealing strips,
2. An execution component;
21. The valve comprises a valve core body, 211, a sealing pressing plate, 212, a through groove, 22, a first return spring, 23, a first diaphragm, 24 and a rubber sealing ring;
3. A power assembly;
31. Needle valve assembly 311, needle valve body 312, adjusting knob 313, guide ring 314, guide groove 315, cavity;
32. a slide valve assembly 321, a valve rod 322, a second return spring 323, a second diaphragm 324 and a second air passage;
4. A control assembly;
41. The liquid level pressure sensor 42, the pressure stabilizing buffer unit 43, the kinetic energy conversion unit 44, the connector 45, the seventh cavity 46, the third diaphragm 47, the diversion hole 48 and the sensor interface;
G01, input port, G02, output port, G03, air pipeline interface, G04, vacuum pipeline interface.
Detailed Description
The following describes the present invention in further detail with reference to specific examples:
As shown in fig. 1, the full-automatic pneumatic control device is arranged in a vacuum well 01 and is used for conveying sewage in the vacuum well 01 into a downstream vacuum collection pipeline network, the sewage is a part marked as '02' in fig. 1, as shown in fig. 2, the full-automatic pneumatic control device structurally comprises a shell 1, an execution assembly 2, a power assembly 3 and a control assembly 4, wherein the execution assembly 2, the power assembly 3 and the control assembly 4 are arranged in the shell 1, and the control assembly 4 triggers the execution assembly 2 to work, and are distributed sequentially from top to bottom.
As shown in fig. 3, the housing 1 includes an upper housing 11, a middle housing 12 and a lower housing 13 which are sequentially disposed from top to bottom, and in order to facilitate processing of each space inside the middle housing 12, the middle housing 12 is designed as a first middle housing 121, a second middle housing 122, a third middle housing 123, a fourth middle housing 124 and a fifth middle housing 125 which are sequentially disposed from top to bottom; the inner part of the middle shell 12 is provided with a first cavity 101, a second cavity 102, a third cavity 103, a fourth cavity 104, a fifth cavity 105 and a sixth cavity 106 which are sequentially communicated from top to bottom, wherein the first cavity 101 is arranged in the first middle shell 121, the second cavity 102 is arranged in the second middle shell 122, a first inner hole 111 is arranged between the second cavity 102 and the first cavity 101, the third cavity 103 and the fourth cavity 104 are arranged at the upper end and the lower end of a third middle shell 123, a second inner hole 112 is arranged between the third cavity 103 and the second cavity 102, a third inner hole 113 is arranged between the third cavity 103 and the fourth cavity 104, a fifth cavity 105 is arranged in the fourth middle shell 124, a throttling channel 116 which is also arranged between the side wall of the fourth middle shell 124 and is also arranged between the sixth cavity 106 and the lower end of the fifth middle shell 125, a fourth inner hole 114 is arranged between the fourth inner hole 114 and the fourth inner hole 114, two ends of the first air channel 12 which are respectively communicated with the fourth inner hole 114 and the sixth cavity 106, a first air channel 12, a third air channel 14, a fourth air channel 122, a fourth air channel 14 and a fourth air channel 122 are arranged between the fourth air channel 14 and the fourth hollow shell 124, and the fourth hollow shell 124 are sequentially communicated with the fourth hollow shell 124.
The side wall of the middle shell 12 is provided with an air inlet 15, a valve body air interface 16, a valve body air control interface 17 and a vacuum inlet and outlet 18, wherein the air inlet 15 is arranged at the side wall of the fourth middle shell 124 and is communicated with the air flow channel 14, the detailed communication principle is referred to below as communication between the air inlet 15 and the air flow channel 14, the valve body air interface 16 is arranged at the side wall of the first middle shell 121 and is used for being connected with a vacuum blowdown valve and communicated with the air flow channel 14, the valve body air control interface 17 and the vacuum inlet and outlet 18 are arranged on the third middle shell 123, the valve body air control interface 17 is communicated with the third cavity 103, and the vacuum inlet and outlet 18 is communicated with the fourth cavity 104 as shown in fig. 4.
The main function of the execution assembly 2 is to realize continuous intermittent connection of vacuum and air to an output port, namely a valve body pneumatic control interface 17, so that the output port finally realizes the requirement of intermittent sequential connection of vacuum and air, and is similar to a two-position three-way reversing valve; the structure of the valve core assembly comprises a valve core assembly for realizing air and vacuum on-off, the valve core assembly comprises a valve core body 21, a first reset spring 22 and a first diaphragm 23, the valve core body 21 sequentially penetrates through a first inner hole 111, a second inner hole 112 and a third inner hole 113 and extends into a first cavity 101, a second cavity 102, a third cavity 103 and a fourth cavity 104, rubber sealing rings 24 for sealing with the side wall of the valve core body 21 are nested on the inner walls of the first inner hole 111, the second inner hole 112 and the third inner hole 113, a sealing pressing plate 211 is integrally arranged on the valve core body 21 in the third cavity 103, as shown in fig. 6, through grooves 212 are formed in the side wall of the valve core body 21 at the upper end and the lower end of the sealing pressing plate 211, the first reset spring 22 is sleeved on the outer wall of the valve core body 21 in the second cavity 102, the first diaphragm 23 is arranged in the fourth cavity 104, the middle is fixedly connected with the lower end of the valve core body 21, the outer end of the periphery is fixedly connected with the inner wall of the fourth cavity 104, the fourth cavity 104 is divided into a first upper cavity 1041 and a lower cavity 1042, the first diaphragm 23 is fixedly connected with the outer end of the first diaphragm 23 in a sleeved mode, and the middle part is fixedly connected with the outer end of the first diaphragm 23 is fixedly connected with the first diaphragm 23 in a sleeved mode, and is fixedly connected with the outer diaphragm 23 through the middle diaphragm 23, and is fixedly connected with the middle diaphragm 23.
The main function of the power assembly 3 is to realize that vacuum and air are intermittently communicated to the execution assembly 2 under the control of the control assembly 4, so that the requirement of quick switching is met, and the valve is similar to a two-position two-way reversing valve or a two-position three-way reversing valve; as shown in FIG. 7, the structure of the valve comprises a needle valve assembly 31 for realizing delayed closing and a slide valve assembly 32 for realizing quick opening, the needle valve assembly 31 is nested and matched in a throttle channel 116 and comprises a needle valve body 311 extending into a fifth cavity 105 and an adjusting knob 312 fixed at one side of the needle valve body 311 far away from the fifth cavity 105, a diversion ring 313 is further arranged at the lower end of the inner side of the fifth cavity 105, as shown in FIG. 8 and FIG. 9, a cavity 315 which is annularly arranged is arranged at the lower end surface of the diversion ring 313, a plurality of diversion grooves 314 which extend into the cavity from the upper end surface to the cavity in an arc shape are uniformly arranged at the upper end part, wherein the cavity 315 is communicated with the throttle channel 116, the throttle channel 116 is communicated with a vacuum inlet and outlet 18, the detailed communication principle refers to the following 'communication of the throttle channel 116 with the vacuum inlet and outlet 18', the slide valve assembly 32 comprises a valve rod 321, a second return spring 322 and a second diaphragm 323, the valve rod 321 is nested and a fourth inner hole 114 and is in sliding fit, a second air passage 324 communicated between the side wall and the upper end surface is arranged in the fourth inner hole 114 of the valve rod 321, the second return spring 322 is arranged at the upper end of the fourth inner hole 114, the second return spring is arranged at the lower end of the valve rod 321, the cavity is communicated with the sixth inner end part of the sixth diaphragm 106, the second diaphragm is fixedly connected with the lower end of the cavity 106 and the cavity 106, and the upper end of the cavity 106 is fixedly arranged at the lower end 1062, and the upper end of the cavity 106 is separated from the cavity 1.
The control assembly 4 comprises a liquid level pressure sensor 41, a pressure stabilizing buffer unit 42 and a kinetic energy conversion unit 43, and mainly has the functions of realizing the change of the volume of an internal relevant space under the control of the liquid level pressure sensor 41, triggering the power assembly 3 to work and finally driving the execution assembly 2 to finish the action, wherein a connector 44 is fixed at the lower end of the lower shell 13, a seventh cavity 45 is arranged between the upper end of the connector 44 and the lower end face of the lower shell 13, a diversion hole 47 is arranged between the seventh cavity 45 and a sixth cavity 106, a sensor interface 48 communicated with the side wall is arranged between the seventh cavity 45 and the side wall, the lower end of the liquid level pressure sensor 41 extends to the lower end of a vacuum well 01 and the upper end of the vacuum well is connected with the sensor interface 48, the pressure stabilizing buffer unit 42 comprises a region formed by the connector 44 and the seventh cavity 45, a third diaphragm 46 is arranged in the seventh cavity 45, the outer end of the third diaphragm 46 in the circumferential direction is fixedly connected with the inner wall of the seventh cavity 45, a through hole communicated with the upper end and lower ends of the third diaphragm 46 is arranged on the end face, and the kinetic energy conversion unit 43 comprises a region 323 formed by the sixth cavity 106 and the second diaphragm 323.
In this embodiment, the structural principle of the pipeline communication is as follows:
(1) Communication of the air inlet 15 with the air flow passage 14:
As shown in fig. 11, an arc-shaped air flow passage is formed between the first middle housing 121 and the second middle housing 122 and between the second middle housing 122 and the third middle housing 123, when air enters from the air inlet 15, the air passes through the third middle housing 123 (as indicated by a point a in fig. 11 and 12), enters into the two layers of air flow passages to circulate (as indicated by two arc-shaped circulation paths in fig. 11), then enters into the first middle housing 121 (as indicated by a point B in fig. 11 and 12), and communicates with the air flow passage 14 at the point B, and at this time, the air inlet 15 communicates with the air flow passage 14, and the communication paths are indicated by dotted lines in fig. 11 and 12.
(2) Communication of the throttle passage 116 with the vacuum port 18:
As shown in fig. 13, the lower end surface of the fourth middle casing 124 has a guiding groove 1241, two ends of the guiding groove 1241 are respectively a point C and a point D, wherein the point C is located at one side of the deviation throttling channel 116 and is communicated with the throttling channel 116, the point D penetrates through the fourth middle casing 124, as shown in fig. 14, the lower end of the guiding groove 1241 has a sealing strip 1242 with the same shape as the guiding groove 1241, as shown in fig. 15, the first middle casing 121, the second middle casing 122 and the third middle casing 123 are internally provided with a first vacuum channel communicated with the point D, the upper ends of the first middle casing 121, the second middle casing 122 and the third middle casing 123 are internally provided with a second vacuum channel communicated with the vacuum inlet 18, and the upper end of the first middle casing 121 is provided with a third annular vacuum channel and is used for communicating the first vacuum channel and the second vacuum channel, and finally, the communication route between the throttling channel 116 and the vacuum inlet 18 can be realized as shown by dotted lines in fig. 15.
In this embodiment, the working principle of each component is as follows:
(1) Control assembly 4:
a. the liquid level pressure sensor 41. When the liquid level in the vacuum well 01 reaches the high limit set by the liquid level pressure sensor 41, the full-automatic pneumatic control device starts to perform sewage disposal, when the liquid level gradually decreases to the lowest point, air enters the liquid level pressure sensor 41, and the kinetic energy conversion unit 43 related below is quickly reset, and as the liquid level pressure sensor 41 belongs to the prior art and is in a kinetic energy conversion mode based on a diaphragm type structure, the invention will not be repeated on a more detailed working principle thereof.
B. And the pressure stabilizing buffer unit 42 is shown in fig. 16, when the liquid level pressure sensor 41 reaches a low liquid level, accumulated water in the sewage suction pipeline flows back to impact the liquid level pressure sensor 41 to cause larger fluctuation of the liquid level, and the pressure stabilizing buffer unit 42 can effectively reduce the sensitivity of the liquid level sensor to air pressure fluctuation in the liquid level sensor.
C. The kinetic energy conversion unit 43 is shown in fig. 16, the kinetic energy conversion unit 43 is composed of a second diaphragm 323, air is introduced above the second diaphragm, the liquid level pressure sensor 41 is introduced below the second diaphragm to control pressure, the second upper chamber 1061 is introduced with air, the second lower chamber 1062 is introduced with control pressure, and when the liquid level is at the lowest point, the air enters the liquid level pressure sensor 41, so that the kinetic energy conversion unit 43 is quickly reset.
D. The water draining principle is that the inlet and outlet of the kinetic energy converting unit 43 is located below, and the third membrane 46 in the pressure stabilizing buffer unit 42 is provided with a through hole to play a role of water draining, so that the diversion hole 47 below the kinetic energy converting unit can be used as a ventilation inlet and outlet as well as a water draining outlet as far as possible, and a specific water draining path is shown by a dotted line in fig. 16.
(2) Power assembly 3:
In the non-working state, the kinetic energy conversion unit 43 is in a reset state, the first air passage 115 and the second air passage 324 are not communicated, the valve rod 321 is in an air normally-closed mode, the second reset spring 322 is also in a reset state, meanwhile, the air in the fifth cavity 105 is discharged after passing through the needle valve assembly 31, and the vacuum inlet and outlet 18 is communicated with the throttling passage 116 and communicated with the fifth cavity 105, at the moment, the fifth cavity 105 is in a vacuum-on state, the internal flow path is shown by a dotted line in fig. 17, and the throttling function of the needle valve assembly 31 can realize the function of time-lapse reset closing the execution assembly 2.
In the working state, the control pressure of the second lower chamber 1062 is greater than the air pressure of the second upper chamber 1061, as shown in fig. 18, the valve rod 321 moves upward, at this time, the first air passage 115 and the second air passage 324 are communicated, air enters the second upper chamber 1061 from the air flow passage 14, enters the second air passage 324 through the first air passage 115, and finally enters the fifth cavity 105, at this time, the fifth cavity 105 is in an air-passing state, and the internal circulation line is shown by the dotted line in fig. 18.
(3) Executing component 2:
As shown in fig. 19, the structure diagram of the execution assembly is shown, the second cavity 102, the third cavity 103, the fourth cavity 104 and the fifth cavity 105 are sequentially arranged from top to bottom, the valve core body 21 penetrating through the second cavity 102, the third cavity 103 and the fourth cavity 104, the first return spring 22 sleeved outside the valve core body 21, the sealing pressing plate 211 integrally arranged with the valve core body 21, the first diaphragm 23 connected with the lower end of the valve core body, wherein the sealing pressing plate 211 is arranged in the third cavity 103, the first diaphragm 23 is arranged between the fourth cavity 104 and the fifth cavity 105, further, the fifth cavity 105 is communicated with an input port G01, the input port G01 is acted by the power assembly 3 to realize intermittent communication of vacuum and air, namely, vacuum is communicated in a non-working state, the third cavity 103 is communicated with an output port G02, namely, the valve body pneumatic control interface 17, the second cavity 102 is communicated with an air pipeline interface G03, namely, the air inlet 15, and the fourth cavity 104 is communicated with a vacuum pipeline interface G04, namely, the inlet 18.
In the non-working state, namely, the fifth cavity 105 is vacuumized, because the fifth cavity 105 is communicated with the first lower cavity 1042, the first lower cavity 1042 is vacuumized at the moment, the valve core body 21 is contacted and sealed with the upper end surface of the rubber sealing ring 24 in the third inner hole 113 under the action of the first reset spring 22, so that the first upper cavity 1041 where the vacuum inlet and outlet 18 is located cannot be communicated with the third cavity 103 where the valve body pneumatic control interface 17 is located, meanwhile, air in the air channel 14 is communicated with the third cavity 103 through the second cavity 102 and the through groove 212 on the side wall of the valve core body 21, and further, the air is communicated with the valve body pneumatic control interface 17, and the vacuum sewage draining valve connected with the valve core body is reset and closed at the moment, as shown in fig. 20, and the air flow path diagram is shown.
In the working state, namely, the fifth cavity 105 is ventilated, because the fifth cavity 105 is communicated with the first lower cavity 1042, at the moment, the first lower cavity 1042 is ventilated, the first upper cavity 1041 and the first lower cavity 1042 generate upward moving force due to the existence of pressure difference, after the force overcomes the first return spring 22, the sealing pressing plate 211 contacts and seals the lower end face of the rubber sealing ring 24 in the second inner hole 112, so that the second cavity 102 where the air is located cannot be communicated with the third cavity 103 where the valve body pneumatic interface 17 is located, meanwhile, the first upper cavity 1041 where the vacuum inlet and outlet 18 is located is communicated with the third cavity 103 through the through groove 212 on the side wall of the valve core body 21, and then is communicated with the valve body pneumatic interface 17, at the moment, the vacuum blow-off valve connected with the first upper cavity 1041 is opened, and sewage discharge or circulation is realized, as shown in fig. 21, which is a vacuum circulation circuit diagram.
The working principle of water collection and drainage is that the air flow is known from the flowing direction of the air flow in the working state, the air flow from the valve body air control interface 17 enters the third cavity 103 in the anticlockwise direction (referring to fig. 4) due to the deviation of the valve body air control interface 17, gradually flows to the middle area along the peripheral area, and is beneficial to the drainage of accumulated water in the cavity, the lower end of the third inner hole 113 is provided with an annular notch, as shown in fig. 22, so that liquid flows to the first upper cavity 1041 in the anticlockwise direction (referring to the overlook direction of the third middle shell 123) through the annular notch, as shown in fig. 23, is thrown in the radial direction and the tangential direction (referring to the overlook direction of the third middle shell 123) under the jet action of the annular notch, and then is discharged to the vacuum inlet 18 in the tangential direction along the peripheral area of the first upper cavity 1041, and then enters the subsequent vacuum pipeline system, and finally the drainage of condensed water vapor in the air control chamber in the vacuum drain valve is ensured.
The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement the same according to the content of the present invention, and are not intended to limit the scope of the present invention. It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and thus, the embodiments are to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (5)
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| CN112663747B (en) * | 2020-12-29 | 2025-04-29 | 清环拓达(苏州)环境科技有限公司 | A pneumatic controller for extracting odor triggered by a pneumatic button |
| CN112663743B (en) * | 2020-12-29 | 2025-03-07 | 清环拓达(苏州)环境科技有限公司 | An integrated gas control controller with split trigger |
| CN113152610B (en) * | 2021-04-06 | 2025-02-25 | 清环拓达(苏州)环境科技有限公司 | A hand-controlled magnetic opening and closing controller |
| CN115183047B (en) * | 2022-05-16 | 2026-01-06 | 苏州中鹿环保设备有限公司 | On/off converter with delayed closing valve function |
| CN114962724B (en) * | 2022-05-30 | 2024-09-24 | 上海飞奥燃气设备有限公司 | General pressure switch of integrated relief valve and gas equipment |
| CN115070612B (en) * | 2022-07-12 | 2024-09-17 | 深圳市加逸科技有限公司 | A grinding machine quick connector with pressure relief adjustment structure |
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| CN105155651A (en) * | 2015-08-19 | 2015-12-16 | 清华大学深圳研究生院 | Negative pressure drainage system and drainage method |
| CN212318945U (en) * | 2020-08-27 | 2021-01-08 | 清环拓达(苏州)环境科技有限公司 | Full-automatic pneumatic control device |
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| US6223361B1 (en) * | 1998-05-13 | 2001-05-01 | Mag Aerospace Industries, Inc. | Galley waste disposal system |
| US9777855B2 (en) * | 2014-11-17 | 2017-10-03 | Regulator Technologies Tulsa, Llc | Pressure vacuum relief valve providing monitoring capabilities |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105155651A (en) * | 2015-08-19 | 2015-12-16 | 清华大学深圳研究生院 | Negative pressure drainage system and drainage method |
| CN212318945U (en) * | 2020-08-27 | 2021-01-08 | 清环拓达(苏州)环境科技有限公司 | Full-automatic pneumatic control device |
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