CN201795114U - Constant-pressure valve structure - Google Patents

Abstract

A constant-pressure valve structure is mounted in a pneumatic power tool and an air pressure delivery pipeline and used for regulating and controlling constant-pressure output. An actuator, a top plug and a spring ring are assembled between a valve body and a base, wherein a two-sectional hollow opened space container is arranged in the valve body, inner thread is disposed on the tail section of the inner wall of the space container, after a second seal ring is assembled in a second concave circular groove of the actuator, a concave space of the second concave annular groove is communicated with outlets on two sides of a convex portion at the front end, a T-shaped portion with outer thread is arranged on the base, the spring ring can penetrate into the surface of a cylinder body at the front end, a first seal ring is assembled in a first concave annular groove at the most significant end, a two-sectional hollow opening is arranged in the base so as to form a front-end passageway, air pressure of an air pressure source enters the passageway, after assembling is finished, the constant-pressure valve structure is respectively connected with the air pressure source and an output part, and accordingly the constant-pressure valve achieves constant-pressure output effect after air pressure numerical values are set by the aid of a regulating and controlling component.

Description

The structure of pressure fixing valve

Technical field

The structure of a kind of pressure fixing valve of the utility model is pressure fixing valve is installed in pneumatic tool, the pneumatic tube road, thinks to maintain the level pressure output action of setting the atmospheric pressure value.

Background technique

Press, generally the atmospheric pressure that uses on pneumatic tool, pneumatic tube road is because the supply of gas pressure source and unstable, so that cause the output back numerical value more or less can some variation, also cause the implementation result of tool using relatively influenced jointly, this is to using the influence property on the miniature pneumatic instrument especially obvious, even also can cause the infringement of this instrument, so that need to upgrade exchange device, it is negative that the fluctuating of this increase to manufacture cost, the instability of making quality and working efficiency is not established a capital.

Therefore, the claimant satisfies the author content of the present utility model of developing through with great concentration, and proposes the application of patent.

Summary of the invention

The purpose of this utility model is to provide a kind of structure of pressure fixing valve, and it is installed in pressure fixing valve in pneumatic tool, the pneumatic tube road, think to maintain the level pressure output action of setting the atmospheric pressure value, and simple in structure, easy to assembly, function-stable.

For achieving the above object, the utility model discloses a kind of structure of pressure fixing valve, it is installed in pneumatic tool, the pneumatic tube road, its by a valve body, base, make kinetoplast, top plug and spring ring and constitute; It is characterized in that:

Be shaped on a space room that is the two-part hollow open in the valve body, the latter end of space room inwall is shaped on internal thread;

Base is for having externally threaded convex character shape, the shaft surface of this base front end place spring ring and on the first scrobicular ring ditch foremost assembling one first seal ring, thereby this base inside is the runner of the front end that atmospheric pressure that the hollow open of two-part forms the air feed potential source enters;

Assemble one second seal ring and make kinetoplast at the second scrobicular ring ditch, and have and make the interior concave space that the outlet of protuberance both sides of the front end of kinetoplast connects;

Make kinetoplast, top plug and spring ring position are between valve body and base, utilizing the outside thread of base to be screwed in the internal thread of valve body finishes with assembling, connect respectively more afterwards and establish gas pressure source and output member, and behind the setting atmospheric pressure numerical value of regulation and control assembly, make gas pressure source begin input air pressure power by the runner of base in it to making kinetoplast, do the output supply by the outlets direct of doing the kinetoplast both sides to the outlet of valve body again, when the atmospheric pressure of input increases, to pass spring ring above the atmospheric pressure of setting value, make and make kinetoplast and produce offset phenomena and do adjusting, only return back to when original at the atmospheric pressure of input, then spring ring just will be made kinetoplast to being pushed back to the origin-location state, so reach to maintain the level pressure output of setting the atmospheric pressure value.

Pass through said structure, the utility model makes pressure fixing valve behind the setting atmospheric pressure numerical value by the regulation and control assembly, can allow then gas pressure source begin input air pressure power by the runner of base in it to making kinetoplast, doing output supply by the outlets direct of doing the kinetoplast both sides to the outlet of valve body again; Because atmospheric pressure numerical value is for setting cause, when being the atmospheric pressure increase of input, then will give above the atmospheric pressure of setting value and pass spring ring, think to cause and make kinetoplast thereby produce offset phenomena to do adjusting, only return back to when original at the atmospheric pressure of input, then spring ring just will be made kinetoplast to being pushed back to the origin-location state, so maintain the level pressure output action of setting the atmospheric pressure value to reach.

Description of drawings

Fig. 1: three-dimensional exploded view of the present utility model.

Fig. 2: the stereogram after the utility model combination.

Fig. 3: the sectional view after the utility model combination.

Fig. 4: the diagram of the utility model when start.

Embodiment

At first, please cooperate shown in the detailed description of consulting Fig. 1: the structure of a kind of pressure fixing valve of the utility model, refer to be installed in pneumatic tool, the pneumatic tube road, think the regulating and controlling effect of doing level pressure output, its whole pressure fixing valve system by a valve body 1, base 2, make kinetoplast 3, top plug 4, spring ring 5 and constituted; Wherein be shaped on a space room 11 that is the two-part hollow open in valve body 1, the latter end of space room 11 inwalls falls to then being shaped on internal thread 12; Base 2 is made the convex character shape with outside thread 21, shaft 22 surfaces of thinking front end are placed spring ring 5, and at foremost the first scrobicular ring ditch 221 assembling, one first seal ring 2A, and be in inside two-part hollow open, think that the runner 23 that forms front end comes the atmospheric pressure P of air feed potential source to enter; And make kinetoplast 3 behind the second scrobicular ring ditch, 31 assemblings, one second seal ring 3A, and connect in of the outlet 34 of interior concave space 32 with protuberance 33 both sides of front end; So will make 5 of kinetoplasts 3, top plug 4, spring ring after between valve body 1, the base 2, the outside thread 21 of thinking base 2 is screwed into then in the internal thread 12 in the valve body 1 and finishes (as Fig. 2) to form assembling, so being connect respectively by its two end connector after finishing assembling established gas pressure source and output member, and behind the setting atmospheric pressure numerical value of regulation and control assembly, can make gas pressure source begin input air pressure power P and do output supply (as Fig. 3) by the runner 23 of base 2 in it to the outlet 13 of making kinetoplast 3, guiding to valve body 1 by the outlet 34 of doing kinetoplast 3 both sides again.

During this time, because the numerical value of whole output pressure power has been configured by the regulation and control assembly, therefore increase when becoming atmospheric pressure P1 as the atmospheric pressure P that imports, then the residual gas pressure P 2 that surpasses setting value can be given and pass spring ring 5, think to cause jointly and make kinetoplast 3 and produce offset phenomena then and do adjusting (as Fig. 4), only the atmospheric pressure P of input returns back to when original, promptly do not surpass under residual gas pressure P 2 situations of setting value, then spring ring 5 just will be made kinetoplast 3 to being pushed back to origin-location state (as Fig. 3), make the atmospheric pressure P of real output be maintained lasting output in setting value, so to reach the purpose of level pressure output.

Claims (1)

1. the structure of a pressure fixing valve, it is installed in pneumatic tool, the pneumatic tube road, its by a valve body, base, make kinetoplast, top plug and spring ring and constitute; It is characterized in that:

Be shaped on a space room that is the two-part hollow open in the valve body, the latter end of space room inwall is shaped on internal thread;

Base is for having externally threaded convex character shape, the shaft surface of this base front end place spring ring and on the first scrobicular ring ditch foremost assembling one first seal ring, thereby this base inside is the runner of the front end that atmospheric pressure that the hollow open of two-part forms the air feed potential source enters;

Assemble one second seal ring and make kinetoplast at the second scrobicular ring ditch, and have and make the interior concave space that the outlet of protuberance both sides of the front end of kinetoplast connects;

Make kinetoplast, top plug and spring ring position are between valve body and base, utilizing the outside thread of base to be screwed in the internal thread of valve body finishes with assembling, connect respectively more afterwards and establish gas pressure source and output member, and behind the setting atmospheric pressure numerical value of regulation and control assembly, make gas pressure source begin input air pressure power by the runner of base in it to making kinetoplast, do the output supply by the outlets direct of doing the kinetoplast both sides to the outlet of valve body again, when the atmospheric pressure of input increases, to pass spring ring above the atmospheric pressure of setting value, make and make kinetoplast and produce offset phenomena and do adjusting, only return back to when original at the atmospheric pressure of input, then spring ring just will be made kinetoplast to being pushed back to the origin-location state, so reach to maintain the level pressure output of setting the atmospheric pressure value.

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