CN101469727B - Frequency generating apparatus - Google Patents
Frequency generating apparatus Download PDFInfo
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- CN101469727B CN101469727B CN 200710306305 CN200710306305A CN101469727B CN 101469727 B CN101469727 B CN 101469727B CN 200710306305 CN200710306305 CN 200710306305 CN 200710306305 A CN200710306305 A CN 200710306305A CN 101469727 B CN101469727 B CN 101469727B
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- generating apparatus
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Abstract
The present invention discloses a frequency generating device, which includes an air flow controller with a selective sliding part (4) that can block input port (13) of airflow; wherein the sliding part can be exerted pressure difference generated by inside airflow to invert direction; an airflow output device which is connected to the air source output port (14) of the air flow controller; the airflow output device responses inverting of the sliding part (4) and output impulse airflow. The present invention needs no power and no help from other direction control valve, realizes automatic output of impulse airflow signal through inside air pressure control totally, therefore the frequency generating device of the present invention can work secure and reliable with long service life under terrible working environment like inflammable, explosive, damp, dust large, magnetic field intense, temperature high and low etc. and environment of no electromagnetically controller.
Description
Technical field
The present invention relates to a kind of frequency generating apparatus.
Background technique
Frequency generating apparatus commonly used is the Electromagnetic Control class at present, but Electromagnetic Control quefrency generating means needs power supply, and is not suitable for inflammable, explosive, moist, the abominable working environments such as dust large, high magnetic fields, high temperature, low temperature.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of frequency generating apparatus, can not need power supply and controls by air pressure inside and automatically realize output pulsing airflow signal.
For solving the problems of the technologies described above, the invention provides a kind of frequency generating apparatus, comprising: air flow controller, have the slider that selectively stops up its air-flow inlet opening, the pressure difference that slider response internal gas flow produces, and commutate; Air flow output device is connected to the source of the gas delivery outlet of air flow controller; Air flow output device responds the commutation of slider and exports pulsing airflow.
Preferably, air flow controller is valve member, comprising: valve body, its two ends are connected with valve bonnet seal with valve pocket respectively; And mangetic core assembly, have and coordinate the first piston that forms the first air chamber with valve pocket and coordinate the second piston that forms the second air chamber with valve gap, the second air chamber is communicated with the first air chamber, and mangetic core assembly selectively stops up the air-flow inlet opening of the second air chamber side under the promotion of the pressure difference of two air chambers.
Preferably, the airflow delivery outlet of the second air chamber side is communicated with the first air chamber by connecting tube and first throttle valve.
Preferably, an end of the second piston is extended with the first ladder shaft part that can stop up the air-flow inlet opening vertically, and the other end stretches out the second shaft part that is connected with first piston.
Preferably, the first ladder shaft part has the tapering transition face that coordinates with the air-flow inlet opening.
Preferably, the second shaft part is fastened in the first piston inner chamber, and can be with respect to the first piston elastic movement by spring.
Preferably, be provided with sealing gasket between air-flow inlet opening and described the second piston.
Preferably, the first piston of mangetic core assembly has the sectional area greater than the second piston.
Preferably, valve gap is connected connection by thereon locking nut locking valve body is set with valve gap.
Preferably, air flow output device is one-way throttle valve, has the second outlet that exports and get rid of air-flow in the first air chamber for first of pulsing airflow output.
The present invention is due to need not power supply and do not need by other position control valve, control by air pressure inside fully and the automatic output pulsing airflow signal of realizing, therefore frequency generating apparatus of the present invention inflammable, explosive, moist, dust large, high magnetic fields, high temperature, low temperature etc. are badly in working environments, and can not use in the environment of Electromagnetic Control, safe and reliable, the life-span is long.Can be widely used in various Pneumatic time-delay control system, in the pneumatic gas-control first-aid respirator.
Description of drawings
Accompanying drawing forms the part of this specification, with helping further understand the present invention.These accompanying drawings illustrate some embodiments of the present invention, and can be used for illustrating principle of the present invention together with specification.In accompanying drawing:
Fig. 1 is the longitudinal sectional view of frequency generating apparatus of the present invention, and slide valve assembly shown in figure separates with the air-flow inlet opening.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated.Identical parts represent with identical label in the accompanying drawings.
With reference to sectional view of the present invention shown in Figure 1, frequency generating apparatus of the present invention comprises: air flow controller and air flow output device, wherein air flow controller be valve member comprise valve body 5, be sealedly connected on valve body 5 two ends valve pocket 2 and valve gap 8, be arranged on mangetic core assembly 4 in valve body 5, be arranged on the first throttle valve 1 of valve pocket 2 sides.Wherein valve gap 8 connection of being connected with valve gap by the locking nut 7 locking valve bodies 5 that arrange thereon, its end is pressed on valve body 5 by sealing gasket 6, and valve pocket 2 is threaded with valve body 5, and seal ring 3 is equipped with in the joint of itself and valve body 5.Mangetic core assembly 4 (in the present invention, slider is mangetic core assembly), have and coordinate the first piston 16 that forms the first air chamber 17 with valve pocket 2 and coordinate the second piston 15 that forms the second air chamber 12 with valve gap 8, and first piston 16 has greater than the sectional area of the second piston 15 and proportional.The inwall of piston 15,16 outer wall and valve body 5 is by suitable seal ring sealing.Valve body 5 offers the airflow delivery outlet 14 that is communicated with the second air chamber 12, and airflow delivery outlet 14 makes the second air chamber 12 be communicated with the first air chamber 17 by connecting tube 11 and first throttle valve 1.The second piston 15 has the first ladder shaft part that can stop up air-flow inlet opening 13 and the second shaft part that is connected with first piston 16 elasticity, particularly, the first ladder shaft part has the tapering transition face that coordinates with air-flow inlet opening 13, and the second shaft part of the second piston 15 is fastened in first piston 16 inner chambers and can be with respect to the first piston elastic movement by spring.
Equally with reference to Fig. 1, air flow output device is one-way control valve, comprise: the second throttle valve 10 that is connected with valve body 5, the one-way valve 9 that is connected with the second throttle valve 10, this one-way control valve have the second outlet EXH for air-flow in the first outlet A of pulsing airflow output and eliminating the first air chamber 17.
The process of frequency generating apparatus output pulsing airflow of the present invention is as follows, when mangetic core assembly 4 shown in Figure 1 does not stop up air-flow inlet opening 13, when the entrance P input of forced draft from valve gap 8, air-flow is divided into two-way through the first air chamber 12 from flow outlet 14 outputs, one the road regulates by the second throttle valve 10 from the second throttle valve 10 output and large I, and this moment, one-way valve 9 was in closed condition because of spool two ends differential pressure action.Exert pressure to first piston 16 through connecting tube 11, first throttle valve 1, inflow the second air chamber 17 in another road, when this pressure be enough to overcome the stream pressure that acts on first piston 15 and piston 15,16 and the resistance of valve body 5 promote mangetic core assembly 4 and slide, to stop up air-flow inlet opening 13.By and sealing gasket 6 and valve gap 8 between sealing, cut off the air-flow between the second throttle valve 10 on valve gap 8 and valve body 5, the second throttle valve 10 stops the output gas flow signal; One-way valve 9 is opened under the effect of Returnning spring, gas in valve pocket 5 first air chambers 17 is discharged through first throttle valve 1, connecting tube 11, the second throttle valve 10, one-way valve 9, when the first air chamber 17 internal pressures are down to certain value, mangetic core assembly 4 resets mangetic core assembly 4 under valve gap 8 end gas pressure effects, and the second throttle valve 10 is the output gas flow signal again.Realize and so forth output pulsing airflow signal.The size of the aperture of the commutating frequency of mangetic core assembly 4 and first throttle valve 1, air chamber 12,17 volumes and input stream pressure size are relevant, when air chamber 12,17 volumes and input stream pressure are constant, the speed of controlling to the first air chamber 17 interior inflations by regulating first throttle valve 1 realizes that mangetic core assembly 4 commutating frequencies are adjustable continuously.
Although the present invention is illustrated with reference to accompanying drawing and preferred embodiment, obviously, for a person skilled in the art, under the prerequisite that does not deviate from the spirit and scope of the present invention, can make various modifications and variations to the present invention.
Claims (8)
1. the frequency generating apparatus in a Pneumatic time-delay control system, is characterized in that, comprising:
Air flow controller has the slider that selectively stops up its air-flow inlet opening (13), the pressure difference that described slider response internal gas flow produces and commutating;
Air flow output device is connected to the airflow delivery outlet (14) of described air flow controller;
Described air flow output device responds the commutation of described slider and exports pulsing airflow;
Valve body (5), its two ends are tightly connected with valve pocket (2) and valve gap (8) respectively; And
Described slider is mangetic core assembly, and described mangetic core assembly (4) has the second piston (15) that coordinates the first piston (16) that forms the first air chamber (17) with described valve pocket (2) and coordinate formation the second air chamber (12) with valve gap (8);
Described the second air chamber (12) is communicated with described the first air chamber (17), described mangetic core assembly (4) selectively stops up the air-flow inlet opening (13) of described the second air chamber (12) side under the promotion of the pressure difference of two described air chambers (12,17);
Described air flow output device is one-way control valve, has the second outlet that exports and get rid of air-flow in described the first air chamber (17) for first of pulsing airflow output.
2. frequency generating apparatus according to claim 1, wherein, the airflow delivery outlet (14) of described the second air chamber (12) side is communicated with described the first air chamber (17) by connecting tube (11) and first throttle valve (1).
3. frequency generating apparatus according to claim 2, wherein, one end of described the second piston (15) is extended with the first ladder shaft part that can stop up described air-flow inlet opening (13) vertically, and the other end stretches out the second shaft part that is connected with first piston (16).
4. frequency generating apparatus according to claim 3, wherein, described the first ladder shaft part has the tapering transition face that coordinates with described air-flow inlet opening (13).
5. frequency generating apparatus according to claim 4, wherein, described the second shaft part is fastened in described first piston (16) inner chamber, and can be with respect to first piston (16) elastic movement by spring.
6. frequency generating apparatus according to claim 5, wherein, be provided with sealing gasket (6) between described air-flow inlet opening (13) and described the second piston (15).
7. frequency generating apparatus according to claim 6, wherein, the first piston (16) of described mangetic core assembly (4) has the sectional area greater than described the second piston (15).
8. frequency generating apparatus according to claim 7, wherein, described valve gap (8) is locked described valve body (5) and is connected 8 with valve gap by thereon locking nut (7) is set) connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710306305 CN101469727B (en) | 2007-12-28 | 2007-12-28 | Frequency generating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710306305 CN101469727B (en) | 2007-12-28 | 2007-12-28 | Frequency generating apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101469727A CN101469727A (en) | 2009-07-01 |
| CN101469727B true CN101469727B (en) | 2013-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710306305 Active CN101469727B (en) | 2007-12-28 | 2007-12-28 | Frequency generating apparatus |
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| Country | Link |
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| CN (1) | CN101469727B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846120B (en) * | 2010-04-27 | 2012-11-21 | 武汉工程大学 | Inserted type pulse stream generator |
| CN110043448B (en) * | 2019-05-28 | 2024-01-26 | 华北水利水电大学 | Pulse supercharging airflow generating device |
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2007
- 2007-12-28 CN CN 200710306305 patent/CN101469727B/en active Active
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| Publication number | Publication date |
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| CN101469727A (en) | 2009-07-01 |
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