CN112663743A

CN112663743A - Split type triggered integrated pneumatic control controller

Info

Publication number: CN112663743A
Application number: CN202011592189.XA
Authority: CN
Inventors: 崔利兴; 邓永峰
Original assignee: Qinghuan Tuoda Suzhou Environmental Technology Co ltd
Current assignee: Qinghuan Tuoda Suzhou Environmental Technology Co ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-04-16

Abstract

The invention relates to a split-type triggered integrated pneumatic control controller, which comprises a shell and an execution control assembly arranged in the shell; the outer wall of the shell is provided with a control interface, a vacuum interface, an air interface and an output interface; the execution control assembly comprises an upper valve core assembly, a middle valve core assembly and a lower valve core assembly which are communicated with the vacuum interface and the air interface intermittently and realize the output interface through the air pressure change of the control interface; the invention adopts a split type pneumatic control button connected with the control interface for triggering, and the related pneumatic control controller is of an integrated structure, so that the integral structure has fewer parts and higher reliability, and the control component can move along the axial direction by controlling the air pressure change at the interface, thereby controlling the output interface to be intermittently communicated with the vacuum interface and the air interface, namely controlling the output interface to intermittently introduce air or form vacuum.

Description

Split type triggered integrated pneumatic control controller

Technical Field

The invention relates to the technical field of vacuum sewage collection, transportation and treatment, wherein the vacuum sewage collection technology refers to a front-end device or a product for collecting sewage at a sewage source, and the front-end device or the product comprises but is not limited to various kitchens (such as a closestool, a urinal, a shower room, a bathtub and the like) and sanitary products (such as a vegetable washing tank, a dish washing machine and the like); the vacuum sewage conveying technology is related to the technology of efficiently conveying sewage collected by a front-end device or a product to sewage post-treatment equipment, and comprises core components of a vacuum pump station, a sewage collecting tank, an underground vacuum conveying pipe network system, a vacuum well, a fault detection and diagnosis system and the like; the invention relates to a vacuum sewage treatment technology, in particular to a post-treatment device or device, which mainly has the functions of carrying out solid-liquid separation and purification on sewage collected in a centralized manner, wherein solid can be made into organic fertilizer, and the sewage is filtered and purified by an MBR (membrane biological reactor) membrane technology to realize green emission.

Background

In the technical field of vacuum domestic sewage collection, transportation and treatment, vacuum domestic sewage collection is the foremost technology. The basic realization principle is as follows: first, the sewage collection inlet line (or blowdown inlet line) in the vacuum sewage delivery system is connected to various sewage front end collection devices, including but not limited to various kitchens (such as toilets, urinals, shower stalls, tubs, etc.) and sanitary products (such as sink basins, dishwashers, etc.); secondly, the vacuum pump set generates vacuum in the vacuum sewage conveying system; finally, in the working process of the sewage front-end collecting device, after the vacuum sewage discharge valve is connected, the pressure difference between the external atmospheric pressure and the vacuum value in the pipeline in the vacuum sewage conveying system is acted on the sewage and mixed with air to realize the turbulent conveying of the sewage into the sewage collecting inlet pipeline (or the sewage discharge inlet pipeline).

It is well known that the vacuum domestic sewage collecting system has the disadvantages that the controller of the vacuum toilet is frequently failed in operation and is inconvenient to use, and the controller types are as follows:

first, the pure mechanical type: reference is made to CN1201057C, US6128789, which is controlled mainly by means of a lever mechanism and a cam mechanism.

Secondly, the pneumatic control mode: two types of controllers are included:

(1) single button controllers such as CN101107405A, CN200680003008.7, CN201580081233.1, US5069243, US4373838, US4171853, US 5570715;

(2) dual button controls such as 202010655551.7, 202010710038.3 size water dual button controls and their vacuum sewer systems.

The reasons and disadvantages for these controller failures are:

the mechanical electric control controller has the advantages of large number of parts, complex structure, poor reliability, heaviness and large volume due to the related mechanical parts, and the vacuum closestool is completely paralyzed particularly under the condition of flood disasters.

The pneumatic controllers are all provided with the functions of pressing for delayed connection, and the non-pressing state is the disconnection state, however, the integrated pneumatic controller is inconvenient to use; the known push button triggering devices of pneumatic controllers are mounted on the lid behind the vacuum toilet and have inconvenience in use, such as requiring turning around to trigger the flush mode button after the toilet is finished. During operation, a user can see the excrement in the closestool and simultaneously ask for excrement odor, and particularly, the existing vacuum closestool has high flushing noise, so that the mode of turning over and bending down to flush after going to the toilet increases the retention time, and further the influence probability of flushing noise is increased.

Therefore, aiming at various defects of a mechanical electric control controller and a pneumatic control controller, the invention develops the integrated pneumatic control controller triggered in a split mode to solve the problems in the prior art, and a technical scheme which is the same as or similar to the technical scheme is not found through retrieval.

Disclosure of Invention

The invention aims to: the utility model provides an integral type gas accuse controller that split type was triggered to solve among the prior art to the complicated and poor problem of reliability of mechanical type electric control controller structure, and to the inconvenient problem of pneumatic type gas accuse controller use.

The technical scheme of the invention is as follows: a split-type triggered integrated pneumatic control controller comprises a shell and an execution control assembly arranged in the shell; the outer wall of the shell is provided with a control interface, a vacuum interface, an air interface and an output interface; the execution control assembly comprises an upper valve core assembly, a middle valve core assembly and a lower valve core assembly which are communicated with the vacuum interface and the air interface intermittently and realize the output interface through the air pressure change of the control interface.

Preferably, the shell is internally provided with an installation cavity for installing the upper valve core assembly, the middle valve core assembly and the lower valve core assembly from top to bottom and moving in a matched manner, and the side edge of the interior of the shell is provided with an air flow channel, a vacuum flow channel A and a vacuum flow channel B which are communicated with the installation cavity; the control interface is communicated with the upper end part of the installation cavity, the vacuum interface is communicated with the vacuum flow passage A and the vacuum flow passage B, the air interface is communicated with the air flow passage, and the output interface is communicated with the lower end part of the installation cavity.

Preferably, the mounting chamber comprises a first cavity, a second cavity, a third cavity and a fourth cavity which are sequentially arranged from top to bottom; a first inner hole is formed in the upper end of the first cavity, a second inner hole is formed between the first cavity and the second cavity, a third inner hole is formed between the second cavity and the third cavity, and a fourth inner hole is formed between the third cavity and the fourth cavity; the upper valve core assembly is arranged in the first inner hole and the first cavity and comprises an upper valve rod and a pressing plate which are arranged in an integrated structure and a first return spring arranged below the pressing plate; the upper valve rod is inserted and matched in the first inner hole, and the pressure plate is arranged in the first cavity and divides the first cavity into a first upper cavity and a first lower cavity; the middle valve core assembly comprises a middle valve rod and a second return spring, the middle valve rod is inserted and matched in the second inner hole, and the upper end and the lower end of the middle valve rod respectively extend into the first cavity and the second cavity; the lower valve core assembly comprises a lower valve rod, a corrugated diaphragm fixed at the upper end part of the lower valve rod and a third return spring; the lower valve rod penetrates through the third inner hole, the upper end and the lower end of the lower valve rod respectively extend into the second cavity and the third cavity, and the lower end part of the lower valve rod is moved to realize the connection and disconnection of the fourth inner hole; the corrugated diaphragm is arranged in the second cavity and divides the second cavity into a second upper cavity and a second lower cavity; the air flow channel is communicated with the first upper cavity, the first lower cavity and the fourth cavity; the vacuum flow passage A is communicated with the vacuum interface and the second lower cavity, and the vacuum flow passage B is communicated with the second lower cavity and the side wall of the second inner hole; the control interface is communicated with the first inner hole, and the output interface is communicated with the third cavity.

Preferably, a gap a for realizing the communication between the first lower chamber and the second upper chamber when the middle valve rod moves to be aligned with the second inner hole is arranged on the side wall of the upper end part of the middle valve rod, and a vent hole for realizing the communication between the second upper chamber and the vacuum flow passage B when the middle valve rod moves to be aligned with the side wall of the second inner hole is arranged on the lower end part of the middle valve rod; and a gap B for realizing the communication between the second lower cavity and the third cavity when the lower valve rod moves to be aligned with the third inner hole is arranged on the side wall of the lower valve rod.

Preferably, first cavity, second cavity, third cavity, first hole, second hole, third hole, fourth hole, go up valve core subassembly, well valve core subassembly and lower valve core subassembly all coaxial setting, chamber upper end is provided with the interior slat of direction on the second, lower valve rod upper end is provided with the outer slat of direction that cooperates and can realize coaxial relative motion with the interior slat plug bush of direction.

Preferably, the control interface is arranged on the side wall of the upper end part of the shell, the vacuum interface, the air interface and the output interface are all arranged on the lower end surface of the shell, and the number of the output interfaces is two.

Preferably, a needle valve assembly for controlling the flow rate of the gas is arranged in the vacuum flow channel B along the horizontal direction at one end biased to the second lower chamber.

Preferably, the first return spring and the second return spring are both located in the first lower chamber and are respectively used for realizing upward return of the first valve rod and the second valve rod; and the third return spring is positioned in the second lower chamber and is used for realizing the upward return of the third valve rod.

Preferably, sealing components are arranged between the upper valve rod and the first inner hole, between the middle valve rod and the second inner hole, between the lower valve rod and the third inner hole and in a fourth inner hole which is used for being matched with the lower end part of the lower valve rod to realize plugging.

Preferably, the seal assembly includes an annular seal ring disposed between the upper valve rod and the first inner bore, a lip seal ring disposed between the middle valve rod and the second inner bore, an o-ring disposed between the lower valve rod and the third inner bore, and a rubber plug disposed in the fourth inner bore.

Compared with the prior art, the invention has the advantages that:

(1) the invention adopts a split type pneumatic control button connected with the control interface for triggering, and the related pneumatic control controller is of an integrated structure, so that the integral structure has fewer parts and higher reliability, and the control component can move along the axial direction by controlling the air pressure change at the interface, thereby controlling the output interface to be intermittently communicated with the vacuum interface and the air interface, namely controlling the output interface to intermittently introduce air or form vacuum.

(2) The single pneumatic control controller provided by the invention is provided with two output interfaces, so that the single pneumatic control controller can be simultaneously connected with two control parts (such as a vacuum blowoff valve, a pneumatic water valve and the like) and controls the two control parts, and the functionality is stronger.

(3) The pneumatic control controller does not need to use an electric power supply, such as a battery pack, a solar panel, a cable, a transformer and the like, can directly realize control by controlling the air pressure change at the interface, and has low energy consumption of the whole structure.

(4) Compared with the traditional valve core damping structure, the valve core damping structure has the advantages that the valve core damping structure can be adjusted only by disassembling and assembling the valve core damping structure, the valve core damping structure can be adjusted directly through the valve needle assembly without disassembling, and the use convenience is higher.

(5) Overall structure's is sealed through seal assembly and is realized, seals through ring type sealing washer between last valve rod and the first hole promptly, seals through lip seal between well valve rod and the second hole, seals through o type sealing washer between lower valve rod and the third hole, and the break-make of fourth hole is sealed with the rubber end cap through tip under the lower valve rod, and overall structure designs more rationally.

Drawings

The invention is further described with reference to the following figures and examples:

FIG. 1 is a schematic structural diagram of a split-type triggered integrated pneumatic controller according to the present invention;

FIG. 2 is a bottom view of a split-type triggering integrated pneumatic controller according to the present invention;

FIG. 3 is a top view of a split-triggered integrated pneumatic controller according to the present invention;

FIG. 4 is a sectional view A-A of the integrated pneumatic controller with split triggering according to the present invention;

FIG. 5 is a cross-sectional view of the housing of the present invention;

FIG. 6 is a cross-sectional view of 1/4 of a split-type pneumatic controller according to the present invention;

FIG. 7 is a schematic diagram of an execution control module according to the present invention;

FIG. 8 is a B-B cross-sectional view of a split triggered integrated pneumatic controller according to the present invention;

FIG. 9 is an enlarged sectional view B-B of the split-type triggered integrated pneumatic controller according to the present invention;

FIG. 10 is a partial cross-sectional structural view of the lower housing of the present invention;

FIG. 11 is an enlarged view of a portion of the vacuum flow passage B and the vent hole of the present invention;

FIG. 12 is a cross-sectional view of a valve stem according to the present invention;

FIG. 13 is a schematic view of the lower stem of the present invention;

FIG. 14 is a cross-sectional view of a split-type pneumatic controller according to the present invention in a non-operating state;

FIG. 15 is a schematic diagram of an internal air circulation circuit of the split-type triggered integrated pneumatic controller according to the present invention when the controller is not in operation;

FIG. 16 is a vacuum circulation line diagram of the integrated pneumatic controller with split triggering according to the present invention when the output port is communicated with the vacuum port in the operating state;

fig. 17 is a vacuum circulation line diagram in the lower valve rod resetting process in the working state of the split-type triggered integrated pneumatic controller.

Wherein: 1. a housing;

11. the device comprises an upper shell, a first middle shell, a second middle shell, a lower shell, a control interface, a vacuum interface, an air interface, an output interface and a control interface, wherein the upper shell 12, the first middle shell, 13, the second middle shell, 14, the lower shell, 15, the control interface, 16, the vacuum interface, 17;

161. vacuum flow channels a, 162, vacuum flow channel B;

2. installing a chamber;

21. a first cavity, 22, a second cavity, 23, a third cavity, 24, a fourth cavity, 25, a first inner hole, 26, a second inner hole, 27, a third inner hole, 28, a fourth inner hole, 29, an air flow passage;

211. a first upper chamber 212, a first lower chamber;

221. a second upper chamber, 222, a second lower chamber;

3. an execution control component;

31. an upper spool assembly;

311. an upper valve rod 312, a pressure plate 313 and a first return spring;

321. the middle valve rod 322, the second return spring 323, the gap A, 324 and the vent hole;

331. a lower valve rod 332, a corrugated diaphragm 333, a third return spring 334 and a notch B;

4. a seal assembly;

41. an annular sealing ring 42, a lip-shaped sealing ring 43, an o-shaped sealing ring 44 and a rubber plug;

5. a needle valve assembly.

Detailed Description

The present invention will be further described in detail with reference to the following specific examples:

as shown in fig. 1-4, a split-type triggered integrated pneumatic controller includes a housing 1, and an execution control assembly 3 disposed inside the housing 1; a control interface 15, a vacuum interface 16, an air interface 17 and an output interface 18 are arranged on the outer wall of the shell 1; the execution control assembly 3 comprises an upper valve core assembly 31, a middle valve core assembly 32 and a lower valve core assembly 33 which are communicated with the vacuum interface 16 and the air interface 17 intermittently through the output interface 18 by controlling the air pressure change of the interface 15.

More specifically, as shown in fig. 1-4, the housing 1 is a cylindrical structure, and includes an upper housing 11, a first middle housing 12, a second middle housing 13, and a lower housing 14, which are sequentially disposed from top to bottom, in order to facilitate processing of an internal cavity, the upper housing 11, the first middle housing 12, the second middle housing 13, and the lower housing 14 are coaxially and fixedly connected by a long rod screw, an installation cavity 2 is formed inside, in which the upper valve core assembly 31, the middle valve core assembly 32, and the lower valve core assembly 33 are installed from top to bottom and move in a matching manner, and an air flow channel 29, a vacuum flow channel a161, and a vacuum flow channel B162, which are communicated with the installation cavity 2, are disposed on the inner side; as shown in fig. 5, the installation chamber 2 includes a first cavity 21, a second cavity 22, a third cavity 23 and a fourth cavity 24 sequentially arranged from top to bottom; a first inner hole 25 is arranged at the upper end of the first cavity 21, a second inner hole 26 is arranged between the first cavity 21 and the second cavity 22, a third inner hole 27 is arranged between the second cavity 22 and the third cavity 23, and a fourth inner hole 28 is arranged between the third cavity 23 and the fourth cavity 24.

As shown in fig. 4, 6 and 7, the upper valve core assembly 31 is disposed in the first inner hole 25 and the first cavity 21, and includes an upper valve rod 311 and a pressure plate 312 which are integrally disposed, and a first return spring 313 disposed below the pressure plate 312; the upper valve rod 311 is inserted and matched in the first inner hole 25, the pressure plate 312 is arranged in the first cavity 21, and the first cavity 21 is divided into a first upper cavity 211 and a first lower cavity 212; the middle valve core assembly 32 comprises a middle valve rod 321 and a second return spring 322, the middle valve rod 321 is inserted and matched in the second inner hole 26, and the upper end and the lower end of the middle valve rod 321 extend into the first cavity 21 and the second cavity 22 respectively; the lower spool assembly 33 includes a lower stem 331, a bellows diaphragm 332 fixed to an upper end portion of the lower stem 331, and a third return spring 333; the lower valve rod 331 penetrates through the third inner hole 27, the upper end and the lower end of the lower valve rod respectively extend into the second cavity 22 and the third cavity 23, and the lower end part of the lower valve rod realizes the connection and disconnection of the fourth inner hole 28 through movement; the bellows 332 is disposed in the second cavity 22 and divides the second cavity 22 into the second upper chamber 221 and the second lower chamber 222.

The communication between the interface and the internal chamber outside the housing 1 is specifically as follows:

as shown in fig. 1 and 2, the control interface 15 is disposed on the side wall of the upper end of the housing 1, the vacuum interface 16, the air interface 17 and the output interface 18 are disposed on the lower end surface of the housing 1, and the number of the output interfaces 18 is two, so that the control interface can be connected with two control components (such as a vacuum blowoff valve, a pneumatic water valve, etc.) and can control the two control components simultaneously, so that the functionality is stronger; the control interface 15 is communicated with the upper end part of the mounting chamber 2, and the control interface 15 is communicated with the first inner hole 25; as shown in fig. 5, the air port 17 is communicated with the air flow passage 29, and the air flow passage 29 is communicated with the first upper chamber 211, the first lower chamber 212 and the fourth cavity 24; the vacuum port 16 is communicated with the vacuum flow channel a161 and the vacuum flow channel B162, as shown in fig. 8 and 9, the vacuum flow channel a161 is disposed at the inner side of the second middle shell 13 and the lower shell 14, as shown in fig. 10, the lower end of the vacuum flow channel a161 is communicated with the vacuum port 16, and the upper end is communicated with the second lower chamber 222; as shown in fig. 11, the vacuum flow passage B162 is disposed at the inner side of the first middle shell 12 and the second middle shell 13, the lower end of the vacuum flow passage B is communicated with the second lower chamber 222, the upper end of the vacuum flow passage B is communicated with the side wall of the second inner hole 26, and the needle valve assembly 5 for controlling the flow rate of the gas is horizontally disposed at one end of the lower end biased to the second lower chamber 222; the output port 18 communicates with the lower end of the mounting chamber 2, i.e. with the third cavity 23; further, as shown in fig. 12, a side wall of an upper end portion of the middle valve rod 321 is provided with a notch a323 for realizing communication between the first lower chamber 212 and the second upper chamber 221 when the middle valve rod 321 moves to be aligned with the second inner hole 26, a lower end portion of the middle valve rod 321 is provided with a vent hole 324 for realizing communication between the second upper chamber 221 and the vacuum flow passage B162 when the middle valve rod 321 moves to be aligned with the side wall of the second inner hole 26, and the vacuum flow passage B162 is communicated with the vent hole 324 when the middle valve rod 321 is in the reset state; as shown in fig. 13, a notch B334 is provided at the sidewall of the lower stem 331 for communicating the second lower chamber 222 with the third cavity 23 when moving into alignment with the third bore 27.

The first cavity 21, the second cavity 22, the third cavity 23, the first inner hole 25, the second inner hole 26, the third inner hole 27, the fourth inner hole 28, the upper valve core assembly 31, the middle valve core assembly 32 and the lower valve core assembly 33 are all coaxially arranged, the upper end of the second upper cavity 221 is provided with a guide inner strip plate, and the upper end of the lower valve rod 331 is provided with a guide outer strip plate which is in plug-in fit with the guide inner strip plate and can realize coaxial relative movement; the first return spring 313 and the second return spring 322 are both located in the first lower chamber 212 and are respectively used for realizing upward return of the first valve rod and the second valve rod; a third return spring 333 is within the second lower chamber 222 for effecting upward return of the third valve stem.

As shown in fig. 8, in order to ensure the sealing performance of the structure, sealing assemblies 4 are disposed between the upper valve rod 311 and the first inner hole 25, between the middle valve rod 321 and the second inner hole 26, between the lower valve rod 331 and the third inner hole 27, and in the fourth inner hole 28 for sealing in cooperation with the lower end portion of the lower valve rod 331; seal assembly 4 includes an annular seal 41 disposed between upper stem 311 and first bore 25, a lip seal 42 disposed between middle stem 321 and second bore 26, an o-ring 43 disposed between lower stem 331 and third bore 27, and a rubber plug 44 disposed in fourth bore 28.

When the pneumatic control device is used, the control interface 15 is used for being connected with a pneumatic control button so as to control the change of the air pressure between the pneumatic control interface and the first inner hole 25, and the specific working state and the working principle under different working states are as follows:

(1) in the non-working state, the pneumatic control button connected with the control interface 15 is in a non-pressing state;

the air interface 17 is communicated with the first upper chamber 211 and the first lower chamber 212 through the air flow passage 29, as shown in fig. 14, the upper valve rod 311 rises and returns to the highest point under the action of the first return spring 313, the middle valve rod 321 rises and returns to the highest point under the action of the second return spring 322, and meanwhile, the first lower chamber 212 is not communicated with the second upper chamber 221 under the action of the lip-shaped sealing ring 42, so that the air in the first lower chamber 212 cannot enter the second upper chamber 221; meanwhile, the lower valve rod 331 rises and resets to the topmost end under the action of the third reset spring 333, the lower end part of the lower valve rod 331 is separated from the rubber plug 44, the third cavity 23 communicated with the output interface 18 is communicated with the fourth cavity 24 through the fourth inner hole 28 and is further communicated with the air interface 17, and finally the output interface 18 can be filled with air; as shown in fig. 15, the broken line in the figure is a specific air flow line.

(2) In the working state, the pneumatic control button is pressed to the bottommost part;

after the pneumatic control button is pressed, the air pressure in the first inner hole 25 communicated with the control interface 15 is increased, and then the spring force of the first return spring 313 and the second return spring 322 is overcome, so that the upper valve rod 311 and the middle valve rod 321 move downwards; after the lower end of the middle valve rod 321 contacts with the upper end of the lower valve rod 331, the air pressure in the first inner hole 25 continuously overcomes the spring forces of the first return spring 313, the second return spring 322 and the third return spring 333, and then the upper valve rod 311, the middle valve rod 321 and the lower valve rod 331 all descend to the bottom; when the lower valve stem 331 is at the bottom, the lower end of the lower valve stem 331 blocks the rubber plug 44, thereby disconnecting the air interface 17 from the third cavity 23.

Meanwhile, since the notch B334 is formed in the side wall of the lower stem 331, the notch B334 is aligned with the third inner hole 27 when the lower stem 331 moves to the bottom, and is not aligned with the third inner hole 27 when the lower stem 331 is at the upper end, the notch B334 enables the second lower chamber 222 to communicate with the third cavity 23; further, as shown in fig. 16, the vacuum port 16 is communicated with the second lower chamber 222, so that the output port 18 communicated with the third cavity 23 is communicated with the vacuum port 16, and a more detailed communication circuit can be shown by the dotted lines in fig. 9 and 10, where point M is the same position, and a vacuum is formed at the output port 18.

(3) In the working state, the upper valve rod 311 rapidly rebounds to the initial state, the middle valve rod 321 slowly rises and resets, and at the moment, the rising reset speed of the middle valve rod 321 is faster than that of the lower valve rod 331;

when the air control button is pressed and the hand is released, the upper valve rod 311 quickly rebounds to the initial state under the action of the first return spring 313, the middle valve rod 321 slowly rises and returns under the action of the second return spring 322, the performance requirement between the first return spring 313 and the second return spring 322 is that the rising speed of the middle valve rod 321 is faster than the rising and returning speed of the lower valve rod 331, and particularly, the middle valve rod 321 is completely reset and finished under the condition that the lower valve rod 331 is not completely reset and rises; in the process that the middle valve rod 321 returns and rises, the air interface 17 is communicated with the first upper chamber 211 and the first lower chamber 212 through the air flow passage 29, and in the process that the middle valve rod 321 rises and returns to the highest point under the action of the second return spring 322 from the lowest point, the notch a323 on the side wall of the middle valve rod 321 is always opposite to the second inner hole 26, so that the first lower chamber 212 is ensured to be communicated with the second upper chamber 221, and further, the air in the first lower chamber 212 enters the second upper chamber 221, so that the second upper chamber 221 is kept at atmospheric pressure.

Meanwhile, in the process that the middle valve rod 321 moves downwards to the bottom and is lifted and reset from the bottom under the action of the second reset spring 322, the upper end part of the vacuum flow channel B162 is staggered with the vent hole 324 in the middle valve rod 321 to realize closing; thereby ensuring that the air pressure in the second upper chamber 221 changes from the negative pressure of the non-operating state to the atmospheric pressure; as the middle stem 321 continues to rise, the notch a323 in the sidewall of the middle stem 321 leaves the engagement of the lip seal 42, eventually ensuring that air in the first lower chamber 212 does not enter the second upper chamber 221.

(4) In the working state, the upper valve rod 311 and the middle valve rod 321 are lifted and reset under the action of the first return spring 313 and the second return spring 322;

as the middle stem 321 continues to rise, after the middle stem 321 rises to the top, a pressure difference is generated between the air above the bellow membrane 332 and the vacuum below, and the pressure difference acts on the bellow membrane 332 to generate a downward pressure (pressure direction is downward), which overcomes the return pressure (pressure direction is upward) of the third return spring 333, so that the lower stem 331 is stationary.

Meanwhile, when the middle valve rod 321 rises to the topmost end, as shown in fig. 17, the vacuum flow passage B162 is communicated with the vent hole 324, and the needle valve assembly 5 starts to operate, because the vacuum flow passage B162 is communicated with the second upper chamber 221 and the second lower chamber 222 and is communicated with the vacuum port 16, the only difference is that the time is required in the process that the air pressure in the second upper chamber 221 is reduced from the atmospheric pressure to the negative pressure, and the time is regulated and controlled by the needle valve assembly 5; the reset speed of the lower valve rod 331 can be controlled by manually adjusting the needle valve component 5, and the delayed closing function of the pneumatic control controller is further realized.

More importantly, under the condition that the work of the pneumatic control controller is not influenced, particularly under the condition that the pneumatic control controller is not disassembled, the needle valve assembly 5 can be adjusted at any time and any place so as to control the delay time, and the function of the controller delay adjustment control can be realized after the controller is disassembled and relevant parts are replaced in the known technology, so that the adjustment efficiency is high, the labor cost is low, the labor intensity is low, and the humanization degree is high.

(5) The working state is recovered to the initial state, and the lower valve rod 331 is lifted and reset under the action of the third reset spring 333;

due to the throttling and speed regulating function of the needle valve assembly 5, the corrugated diaphragm 332 bears a certain pressure difference, the spring force of the third return spring 333 overcomes the pressure generated by the pressure difference of the lower valve core assembly 33 to start to return and rise, and the rising speed of the lower valve rod 331 gradually drops until the rising speed is zero along with the gradual reduction of the pressure difference on the two sides of the corrugated diaphragm 332; when the lower valve rod 331 is completely reset, the communication between the output port 18 and the vacuum port 16 is disconnected, and the output port 18 is communicated with the air port 17.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection 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 it is therefore intended that the present embodiments 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

1. The utility model provides an integral type gas accuse controller of split type trigger which characterized in that: comprises a shell and an execution control assembly arranged in the shell; the outer wall of the shell is provided with a control interface, a vacuum interface, an air interface and an output interface; the execution control assembly comprises an upper valve core assembly, a middle valve core assembly and a lower valve core assembly which are communicated with the vacuum interface and the air interface intermittently and realize the output interface through the air pressure change of the control interface.

2. The integrated pneumatic control controller triggered in a split mode according to claim 1, is characterized in that: an installation cavity for installing the upper valve core assembly, the middle valve core assembly and the lower valve core assembly from top to bottom and moving in a matched manner is arranged in the shell, and an air flow channel, a vacuum flow channel A and a vacuum flow channel B which are communicated with the installation cavity are arranged on the inner side edge; the control interface is communicated with the upper end part of the installation cavity, the vacuum interface is communicated with the vacuum flow passage A and the vacuum flow passage B, the air interface is communicated with the air flow passage, and the output interface is communicated with the lower end part of the installation cavity.

3. The integrated pneumatic control controller triggered in a split mode according to claim 2, is characterized in that: the mounting chamber comprises a first cavity, a second cavity, a third cavity and a fourth cavity which are sequentially arranged from top to bottom; a first inner hole is formed in the upper end of the first cavity, a second inner hole is formed between the first cavity and the second cavity, a third inner hole is formed between the second cavity and the third cavity, and a fourth inner hole is formed between the third cavity and the fourth cavity; the upper valve core assembly is arranged in the first inner hole and the first cavity and comprises an upper valve rod and a pressing plate which are arranged in an integrated structure and a first return spring arranged below the pressing plate; the upper valve rod is inserted and matched in the first inner hole, and the pressure plate is arranged in the first cavity and divides the first cavity into a first upper cavity and a first lower cavity; the middle valve core assembly comprises a middle valve rod and a second return spring, the middle valve rod is inserted and matched in the second inner hole, and the upper end and the lower end of the middle valve rod respectively extend into the first cavity and the second cavity; the lower valve core assembly comprises a lower valve rod, a corrugated diaphragm fixed at the upper end part of the lower valve rod and a third return spring; the lower valve rod penetrates through the third inner hole, the upper end and the lower end of the lower valve rod respectively extend into the second cavity and the third cavity, and the lower end part of the lower valve rod is moved to realize the connection and disconnection of the fourth inner hole; the corrugated diaphragm is arranged in the second cavity and divides the second cavity into a second upper cavity and a second lower cavity; the air flow channel is communicated with the first upper cavity, the first lower cavity and the fourth cavity; the vacuum flow passage A is communicated with the vacuum interface and the second lower cavity, and the vacuum flow passage B is communicated with the second lower cavity and the side wall of the second inner hole; the control interface is communicated with the first inner hole, and the output interface is communicated with the third cavity.

4. The integrated pneumatic control controller triggered in a split mode according to claim 3, is characterized in that: a gap A for realizing the communication between the first lower chamber and the second upper chamber when the middle valve rod moves to be aligned with the second inner hole is arranged on the side wall of the upper end part of the middle valve rod, and a vent hole for realizing the communication between the second upper chamber and the vacuum flow passage B when the middle valve rod moves to be aligned with the side wall of the second inner hole is arranged on the lower end part of the middle valve rod; and a gap B for realizing the communication between the second lower cavity and the third cavity when the lower valve rod moves to be aligned with the third inner hole is arranged on the side wall of the lower valve rod.

5. The integrated pneumatic control controller triggered in a split mode according to claim 4, is characterized in that: first cavity, second cavity, third cavity, first hole, second hole, third hole, fourth hole, go up valve core subassembly, well valve core subassembly and lower valve core subassembly all coaxial setting, chamber upper end is provided with the interior slat of direction on the second, valve rod upper end is provided with the outer slat of direction that cooperates and can realize coaxial relative motion with the interior slat plug bush of direction down.

6. The integrated pneumatic control controller triggered in a split mode according to claim 5, is characterized in that: the control interface is arranged on the side wall of the upper end part of the shell, the vacuum interface, the air interface and the output interface are all arranged on the lower end surface of the shell, and the number of the output interfaces is two.

7. The integrated pneumatic control controller triggered in a split mode according to claim 5, is characterized in that: and a needle valve assembly for controlling the flow rate of gas is arranged at one end of the interior of the vacuum flow channel B, which is deviated to the second lower chamber, along the horizontal direction.

8. The integrated pneumatic control controller triggered in a split mode according to claim 5, is characterized in that: the first return spring and the second return spring are both positioned in the first lower chamber and are respectively used for realizing upward return of the first valve rod and the second valve rod; and the third return spring is positioned in the second lower chamber and is used for realizing the upward return of the third valve rod.

9. The integrated pneumatic control controller triggered in a split mode according to claim 5, is characterized in that: and sealing components are arranged between the upper valve rod and the first inner hole, between the middle valve rod and the second inner hole, between the lower valve rod and the third inner hole and in a fourth inner hole which is matched with the lower end part of the lower valve rod to realize plugging.

10. The integrated pneumatic control controller triggered in a split mode according to claim 9, is characterized in that: the sealing assembly comprises an annular sealing ring arranged between the upper valve rod and the first inner hole, a lip-shaped sealing ring arranged between the middle valve rod and the second inner hole, an o-shaped sealing ring arranged between the lower valve rod and the third inner hole and a rubber plug arranged in the fourth inner hole.