CN112663747A - Pneumatic controller triggered by pneumatic control button and used for pumping odor - Google Patents

Abstract

The invention relates to an air-controlled controller triggered by an air-controlled button for odor extraction, which comprises a shell and an execution control assembly arranged in the shell; the outer side wall of the shell is provided with a control interface, an air interface, an input interface and an input interface; the execution control assembly comprises an upper valve core assembly, a middle valve core assembly and a lower valve core assembly which are intermittently communicated with the input interface and the input interface through the air pressure change of the control interface; the invention is suitable for the vacuum closestool with the function of odor extraction and flushing, solves the problems of odor extraction and toxin expelling by inching control, adopts an integrated structure design, and has few parts and high reliability; the control interface is used for being connected with control button, realizes control interface atmospheric pressure change for the execution control subassembly takes place the motion, and then intermittent type nature's intercommunication input interface and input interface, because the input interface is used for being connected with the vacuum source, can realize effectual bad smell action of taking out.

Description

Pneumatic controller triggered by pneumatic control button and used for pumping odor

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; the invention relates to a vacuum sewage treatment technology, in particular to a pneumatic control button triggered pneumatic control controller for odor extraction, which is applied to a vacuum toilet.

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).

As is well known, vacuum sewage systems are characterized in that a vacuum toilet simultaneously sucks a large amount of air into a vacuum delivery pipe system during the process of draining sewage, and the technical characteristic plays a certain role in purifying the air in a toilet room.

In 2020, the sudden outbreak of the new coronary pneumonia epidemic situation enables people to deeply feel the huge harmfulness of virus spread in the air, and the virus in the air is conveyed to a farther place through the flowing of the air flow and is stained on the surface of a related object, so that the spread range of the virus is greatly expanded. Therefore, besides the core function of noise reduction, the detoxification function puts higher requirements on the use of the military and civil toilet. It is required to efficiently discharge toxic gases released by a patient near a toilet and remaining in the air, such as toxic gases diffused in the air when the patient coughs, vomits and the like in the toilet; it should be noted that epidemic situations do not occur frequently in hundreds of years. Under normal circumstances, however, other problems are encountered during use by the resident. For example, the owner can not smoke the toilet everywhere during smoking the toilet, especially when the wife is pregnant. The windowing ventilation can be influenced by the influence of windless weather, and the use of the exhaust fan can increase the energy consumption and noise, which is inconsistent with the theme, namely noise reduction; other situations include handling problems with vomiting released flavors on the toilet caused by excessive drinking.

It is worth reminding that some excrement and urine that can release foul smell can be discharged sometimes in the patient is like the lavatory in-process, like above procedure, can be with remaining foul smell in the staving of horse barrel under the effect of human body conversion to the air current that produces in the appearance process of standing by the position of sitting after the people stands up, and other positions of bathroom around the closestool are filled in, lead to whole bathroom bad smell, how to solve the problem that the foul smell pollutes whole bathroom, at present known technical scheme or solution have following three kinds:

firstly, an exhaust fan or an air ventilation fan is added in the toilet.

In general, the problem can be solved by adopting a window-opening ventilation or an exhaust fan. However, in the high outbreak period of epidemic outbreak, the odor released from the feces may contain pathogenic germs to spread over not only the whole toilet but also the exhaust pipeline and the window by diffusion to pollute a wider area, and the solution is not beneficial to the use in hospital places with patients with high infectious virus.

Secondly, the time of air exhaust and pollution discharge is prolonged.

The solution of prolonging the air exhaust and sewage discharge time is to increase the air exhaust and sewage discharge time of the vacuum toilet. The method has the advantages of simplicity and low cost, but has clear defects because the energy consumption of the vacuum sewage system is increased in the using process of the scheme, the operation and maintenance cost is increased, and particularly, the energy efficiency is increased obviously in the items such as hotels where the vacuum toilets are used in a centralized way; moreover, another disadvantage of prolonging the pumping time is that the frequency of toilet use is affected, the waiting time for toilet use is increased, and the humanized service level is reduced.

More seriously, the current technical proposal for prolonging the sewage pumping and discharging of the vacuum closestool is carried out by delaying the working time of a controller in the vacuum closestool; the specific use mode of the known technical scheme is that after toilet use is finished, a vacuum closestool flushing button is immediately pressed, then the vacuum closestool quickly leaves a toilet and closes a toilet door, and then the vacuum closestool begins to flush after a certain time delay; because the closestool can produce huge bath noise when washing by water, therefore vacuum closestool is in the time delay blowdown in-process, is not suitable for waiting in the bathroom, and the consequence of this kind of condition leads to the bathroom entrance to need the probability of waiting in line to increase by a wide margin, and humanized degree is low.

And thirdly, optimizing a noise reduction and deodorization channel.

At present, the vacuum toilet noise reduction technology is a hotspot and a difficult point of development, and the basic solution is to adopt a scheme of a sealed toilet cover and an air supply channel, which can refer to other contemporary patents of the first invention; the air supply channel is basically used for supplying air in the water inlet area of the toilet bowl body, and air enters from the bottom or the lower side of the rear side of the toilet bowl body, wherein some technical schemes are that the supplied air directly enters the toilet bowl body, and other technical schemes are that the supplied air also enters a vacuum blowoff valve with an air supply function.

Moreover, the known solutions (refer to 2000-US6128789A, 2002-EP0778432B1, etc.) are that in case of closing the lid of the toilet, air is taken in from the bottom of the toilet and then respectively into the toilet bowl and the vacuum blowoff valve; the big drawback of this kind of technical scheme is unfavorable for in time getting rid of the foul smell of human defecation release because need accomplish like the lavatory after, close the toilet lid earlier, then press the bath button, then the people leaves the bathroom, this kind of use flow is mainly because the bath in-process can produce huge bath noise, stops for a long time and can lead to the health problem of the person, and is humanized not high.

In order to solve the problem of odor exhaust (smoking, vomiting and defecation during defecation) under special conditions, an independent odor exhaust pipeline needs to be added on a vacuum horse barrel body, and air is supplemented in the opposite direction at the same time, but the controllers in the prior art only have the following types at present;

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 controllers have the functions of being connected in a pressing time-delay mode and being in a disconnected state when not in a pressing state, and do not have the inching control function, and meanwhile, the controller applied to the vacuum closestool in the prior art cannot effectively solve the problems of odor pumping, toxin expelling and the like due to the unreasonable structural design, so that the odor pumping air-controlled controller triggered by the air-controlled button is developed to solve the problems in the prior art, and the technical scheme which is the same as or similar to that of the controller is not found through retrieval.

Disclosure of Invention

The invention aims to: the utility model provides a pneumatic control button triggered takes out odor gas accuse controller to solve among the prior art and be applied to the controller in the vacuum closestool and can't effectively solve take out odor gas and the problem of toxin expelling, solve the problem that the controller can't effectively realize inching control because structural design's unreasonable simultaneously.

The technical scheme of the invention is as follows: a pneumatic controller triggered by a pneumatic control button for odor pumping comprises a shell and an execution control assembly arranged in the shell; the outer side wall of the shell is provided with a control interface, an air interface, an input interface and an input interface; the execution control assembly comprises an upper valve core assembly, a middle valve core assembly and a lower valve core assembly which are used for intermittently communicating the input interface and the input 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, an air suction pipeline and a throttling pipeline which are communicated with the installation cavity; the control interface is communicated with the upper end part of the mounting cavity and is arranged on the side wall of the upper end part of the shell; the air interface, the input interface and the input interface are all arranged on the lower end face of the shell, the air interface is communicated with the air flow channel, the input interface is communicated with the lower end part of the installation cavity, and the input interface is communicated with the air suction pipeline and the throttle pipeline.

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 air suction pipeline is communicated with the input interface and the second lower cavity, and the throttling pipeline 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 input 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 throttling pipeline 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, a needle valve assembly for controlling the flow rate of the gas is arranged in the horizontal direction at one end of the throttle pipe, which is deviated 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 is suitable for the vacuum closestool with the function of odor extraction and the vacuum closestool body with the function of odor extraction and flushing, solves the problems of odor extraction and toxin expelling by inching control, and is convenient to use; the pneumatic controller is of an integrated structure, and has few parts and higher reliability; the control interface is used for being connected with a trigger component (such as an air control button) arranged outside, the air pressure at the control interface is changed, the control component is executed to move along the axial direction, the input interface and the input interface are communicated intermittently, the input interface is used for being connected with a vacuum source, when the input interface is communicated with the input interface, the effective odor pumping and toxin expelling actions can be realized, and the gas flows and is exhausted along the input interface, the third cavity, the second lower cavity, the gas pumping pipeline and the input interface in sequence.

(2) The pneumatic controller provided by the invention can realize control by directly controlling the air pressure change at the interface without using an electric power supply, such as a battery pack, a solar panel, a cable, a transformer and the like, and has low energy consumption of the whole structure and strong adaptability.

(3) The resetting speed of the upper valve core assembly, the middle valve core assembly and the lower valve core assembly is gradually reduced, the resetting speed of the upper valve core assembly is higher than that of the middle valve core assembly, the resetting speed of the middle valve core assembly is higher than that of the lower valve core assembly, meanwhile, the delayed resetting of the lower valve core assembly can be adjusted through the needle valve assembly.

(4) The odor extraction is suitable for occasions including but not limited to vomit acid gas after drinking, smoke and smoke, odor of waste discharged in toilet and the like, and the noise is much lower than that of pollution discharge of a vacuum toilet in the odor extraction process.

(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 front view of a pneumatic controller for odor extraction triggered by a pneumatic button according to the present invention;

fig. 2 is a bottom view of the pneumatic controller for air-controlled button triggered odor extraction according to the present invention;

FIG. 3 is a cross-sectional view of a pneumatic controller for air control button triggered odor extraction according to the present invention;

FIG. 4 is a cross-sectional view of the housing of the present invention;

FIG. 5 is a schematic diagram of an execution control module according to the present invention;

FIG. 6 is a cross-sectional view of the pneumatic controller for air-controlled odor extraction triggered by the pneumatic control button along the vertical plane of the central axis of the air extraction pipeline;

FIG. 7 is a partial cross-sectional view of the distribution of the suction lines of the present invention;

FIG. 8 is a cross-sectional structural view of 1/4 of the lower housing of the present invention;

FIG. 9 is an enlarged view of a portion of the throttle pipe and the vent hole of the present invention;

FIG. 10 is a cross-sectional view of a valve stem according to the present invention;

FIG. 11 is a schematic view of the lower stem of the present invention;

fig. 12 is a cross-sectional view of the pneumatic control button triggered odor extraction pneumatic controller of the present invention in a non-operating state;

fig. 13 is a flow chart of an internal circuit of the pneumatic controller for odor extraction triggered by the pneumatic button in a non-operating state (wherein a dotted line is an air flow circuit chart, and a solid line is a vacuum source extraction circuit chart);

fig. 14 is a flow chart of an internal circuit of the pneumatic controller for air-controlled button triggered odor extraction according to the present invention in an operating state (wherein a dotted line is an air flow circuit chart, and a solid line is an odor extraction circuit chart);

fig. 15 is a flow chart of an internal circuit when the upper valve core assembly is reset and the middle valve core assembly and the lower valve core assembly are not reset in a working state of the pneumatic controller for odor extraction triggered by the pneumatic control button according to the present invention (wherein a dotted line is an air flow circuit chart and a solid line is an odor extraction circuit chart);

fig. 16 is a flow chart of internal lines when the upper valve core assembly and the middle valve core assembly are reset and the lower valve core assembly is not reset in an operating state of the pneumatic controller for odor extraction triggered by the pneumatic control button according to the present invention (wherein a dotted line is an air flow line chart, and a solid line is an odor extraction and vacuum extraction line chart).

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 second middle shell, a second middle;

161. an air extraction pipeline 162 and a throttling pipeline;

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. 1-3, a pneumatic controller triggered by a pneumatic button for odor extraction comprises a housing 1 and an execution control assembly 3 arranged inside the housing 1; the outer wall of the shell 1 is provided with a control interface 15, an air interface 17, an input interface 18 and an output interface 16; the executive control assembly 3 comprises an upper spool assembly 31, a middle spool assembly 32 and a lower spool assembly 33 which are used for realizing intermittent communication between the input interface 18 and the output interface 16 through the air pressure change of the control interface 15.

More specifically, as shown in fig. 1-3, 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, an air suction pipeline 161, and a throttle pipeline 162 are disposed on the inner side edge of the installation cavity 2; as shown in fig. 4, 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.

Referring to fig. 3 and 5, 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, a pressure plate 312, 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:

referring to fig. 1 and 2, the control interface 15 is disposed at a side wall of an upper end of the housing 1, and the air interface 17, the input interface 18, and the output interface 16 are disposed on a lower end surface of the output housing 1, wherein the control interface 15 is used for connecting with a peripheral triggering component (such as an air control button) and changing air pressure at the control interface 15; the output interface 16 is used for connecting with a vacuum source, and when the input interface 18 is communicated with the output interface 16, air suction action is realized; 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. 4, 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 output port 16 is communicated with the air suction pipeline 161 and the throttle pipeline 162, as shown in fig. 6-8, the air suction pipeline 161 is disposed at the inner side of the second middle shell 13 and the lower shell 14, the lower end of the air suction pipeline 161 is communicated with the output port 16, and the upper end is communicated with the second lower chamber 222; as shown in fig. 9, the throttling pipeline 162 is arranged at the inner side of the first middle shell 12 and the second middle shell 13, the lower end part of the throttling pipeline is communicated with the second lower chamber 222, the upper end part of the throttling pipeline 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 arranged at one end of the lower end part, which is biased to the second lower chamber 222; the input port 18 communicates with the lower end of the mounting chamber 2, i.e. with the third cavity 23; further, as shown in fig. 10, 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 throttle pipe 162 when the middle valve rod 321 moves to be aligned with the side wall of the second inner hole 26, and the throttle pipe 162 is communicated with the vent hole 324 when the middle valve rod 321 is in the reset state; as shown in FIG. 11, a notch B334 is provided in the sidewall of lower stem 331 for allowing second lower chamber 222 to communicate with third cavity 23 when moved into alignment with 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. 6, 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 air-pressure-control air-suction device is installed, the control interface 15 is used for being connected with an external trigger component (such as an air control button), air pressure change at the control interface 15 is realized through the air control button, meanwhile, the output interface is connected with a vacuum source, air suction is convenient to realize, and the specific working state and the working principle under each working state 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 connection 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. 12, 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 simultaneously, 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 to reset to the topmost end under the action of the third reset spring 333, the lower end of the lower valve rod 331 is separated from the rubber plug 44 and blocks the third inner hole 27 to block the third cavity 23 and the second lower chamber 222, and at this time, the input interface 18 is not communicated with the output interface 16.

In this state, as shown in fig. 13, air is introduced into the air port 17 and can enter the first upper chamber 211 and the first lower chamber 212 along the air flow passage 29; meanwhile, the vent hole 324 in the middle valve rod 321 is communicated with the throttling pipeline 162, so that the second upper chamber 221 is communicated with the second lower chamber 222, and since the second lower chamber 222 is communicated with the output interface 16 through the suction pipeline and the output interface 16 is connected with the vacuum source, so that the vacuum degree is maintained in both the second upper chamber 221 and the second lower chamber 222.

(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, as shown in fig. 14, since the notch B334 is provided at 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, since the output port 16 communicates with the second lower chamber 222, the input port 18 communicates with the output port 16, the solid lines in the drawing indicate the flow path of the gas during the evacuation, and the broken lines indicate the air flow path lines, and the more detailed communication path diagram during the evacuation can be shown in conjunction with the broken lines in fig. 7 and 8, where point M is the same position, and at this time, the output port 16 is connected to the vacuum source, so that the evacuation operation can be performed.

(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;

as shown in fig. 15, when the air control button is pressed and the hand is released, the upper valve rod 311 rapidly 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 between the first return spring 313 and the second return spring 322 requires that the rising speed of the middle valve rod 321 is faster than that of the lower valve rod 331, and particularly, the middle valve rod 321 has been completely reset and completed when the lower valve rod 331 has 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 of the throttling pipeline 162 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 shown in fig. 16, as the middle valve rod 321 continues to rise, after the middle valve rod 321 rises to the top, the throttle pipe 162 is communicated with the vent hole 324, and at this time, the needle valve assembly 5 starts to work, and since the throttle pipe 162 is communicated with the second upper chamber 221 and the second lower chamber 222 and is communicated with the vacuum source, the exhaust action is realized, only the time is needed 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 stem 331 is completely reset, the input line 18 and the output line 16 are disconnected, and the odor exhausting operation is stopped.

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 (9)

1. The utility model provides a take out odor gas accuse controller that gas accuse button triggered which characterized in that: comprises a shell and an execution control assembly arranged in the shell; the outer side wall of the shell is provided with a control interface, an air interface, an input interface and an input interface; the execution control assembly comprises an upper valve core assembly, a middle valve core assembly and a lower valve core assembly which are used for intermittently communicating the input interface and the input interface through the air pressure change of the control interface.

2. The pneumatic control button triggered pneumatic control controller for air exhaust and odor according to claim 1, 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, an air suction pipeline and a throttling pipeline which are communicated with the installation cavity are arranged on the inner side edge of the shell; the control interface is communicated with the upper end part of the mounting cavity and is arranged on the side wall of the upper end part of the shell; the air interface, the input interface and the input interface are all arranged on the lower end face of the shell, the air interface is communicated with the air flow channel, the input interface is communicated with the lower end part of the installation cavity, and the input interface is communicated with the air suction pipeline and the throttle pipeline.

3. The pneumatic control button triggered odor extraction pneumatic control controller according to claim 2, 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 air suction pipeline is communicated with the input interface and the second lower cavity, and the throttling pipeline 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 input interface is communicated with the third cavity.

4. The pneumatic control button triggered controller for air exhaust of odor according to claim 3, 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 throttling pipeline 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 pneumatic control button triggered pneumatic control controller for air exhaust and odor according to claim 4, wherein: 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 pneumatic control button triggered odor extraction pneumatic control controller according to claim 5, characterized in that: and a needle valve assembly for controlling the flow rate of gas is arranged at one end of the throttling pipeline, which is deviated to the second lower chamber, along the horizontal direction.

7. The pneumatic control button triggered odor extraction pneumatic control controller according to claim 5, 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.

8. The pneumatic control button triggered odor extraction pneumatic control controller according to claim 5, 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.

9. The pneumatic control button triggered odor extraction pneumatic control controller according to claim 8, 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.

Images