CN210014031U

CN210014031U - Gas cylinder pressure reducer for welding and cutting

Info

Publication number: CN210014031U
Application number: CN201920655156.1U
Authority: CN
Inventors: 张树清
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-08
Filing date: 2019-05-08
Publication date: 2020-02-04
Anticipated expiration: 2029-05-08

Abstract

The utility model discloses a gas cylinder pressure reducer for welding cutting with integral type valve, including main part, valve spring, valve and ejector pin, the inner chamber bottom of main part is provided with valve spring, valve spring's top is provided with the valve, the top of valve is provided with the ejector pin, and the top of ejector pin stretches out the top of main part inner chamber, be the contact connection between ejector pin and the valve, between valve and the spring, the utility model has the advantages of reasonable design, all seted up the direction venthole at built-in valve seat and the top of external shell, this hole length has the helical pitch position, and the circumscribed circle cooperation with the ejector pin slides, the utility model provides a valve wholly is soft material, has replaced the mode that valve body and valve sealing gasket separated in the past, has reduced the installation degree of difficulty and manufacturing cost, the utility model provides a technical scheme simple structure, Easy assembly and production and reduced production cost.

Description

Gas cylinder pressure reducer for welding and cutting

Technical Field

The utility model relates to a gaseous pressure reducer technical field especially relates to a gas cylinder pressure reducer for welding cutting.

Background

A pressure reducer is a pressure regulating device on a gas cylinder and piping that reduces the inlet pressure to the desired outlet pressure and automatically maintains the outlet pressure substantially constant as the inlet pressure and outlet flow vary. The pressure reducer is often needed to be used in welding and cutting, and suitable gases comprise oxygen, argon, nitrogen, carbon dioxide, hydrogen, acetylene gas, propane gas, liquefied petroleum gas and the like, and the pressure reducer is called as oxygen pressure reducer for oxygen, acetylene pressure reducer for acetylene gas and the like.

The pressure reducer is divided into an internal type and an external type according to an assembling mode, the internal type is provided with a separate valve seat, and a high-pressure chamber at the air inlet end is sealed inside the internal type. The external mounting type valve seat is not provided with a separate valve seat, the valve seat is arranged on the main body and is externally assembled, the high-pressure chamber at the air inlet end is sealed by an end cover, and other parts are completely the same and comprise an ejector rod, a valve sealing gasket, a valve nut, a valve screw and a valve spring.

In the prior art, the ejector rod has a thin section and a small area, a valve screw movable valve body is provided with a positioning hole or a supporting point which is not directly contacted with a valve sealing gasket so as to avoid being pricked, the valve sealing gasket is provided with a central hole, metal is arranged in the hole and used for positioning the ejector rod or jacking, the ejector rod is jacked at the center of the valve in order to balance force, and the central hole of the valve sealing gasket needs to be sealed, so that a lot of troubles are caused for manufacturing the valve.

Generally including six kinds of structures among the prior art, structure one and structure two all adopt the mode that valve nut and valve screw thread screwed, press from both sides tight valve sealing gasket and reach sealed effect, but the valve screw center of structure one has added the screw thread again and the screw thread of ejector pin adds the boss and pushes down the sealed centre bore of valve sealing gasket, but can cause production waste labor and time-consuming and material like this to three four parts still need the assembly together, and the assembly degree of difficulty is big.

The valve sealing gasket and the valve body in the structure III, the structure IV and the structure V are thermally attached together, the requirements of the thermal attaching process on temperature, pressure, adhesive, environmental humidity and the like are strict, the production and processing difficulty is high, the quality is influenced due to the fact that the adhesive cannot be adhered, and the valve sealing gasket and the valve body are close to each other in one direction of the forward structure.

In the sixth structure, the valve seat and the main body are screwed by threads to clamp the valve sealing gasket, the screwing force makes the convex deformation of the valve sealing gasket inconsistent, the performance of the pressure reducer is influenced, the assembly is not easy, the valve seat is provided with a useless large cavity, the size is increased, and the empty groove at the rear tail of the valve is not easy to process.

In conclusion, the cost is increased due to the fact that the original six structures take labor, materials and time, and the like, and the defects of unstable performance and poor reliability are caused.

To this end, we propose a gas cylinder pressure reducer for welding and cutting.

SUMMERY OF THE UTILITY MODEL

The utility model provides a gas cylinder pressure reducer for welding cutting, the above-mentioned current structure manufacturing cost who mentions of aim at is high, the processing degree of difficulty is big, the unstable problem of performance and reliability are poor.

In order to realize the technical purpose, the technical effect is achieved, the utility model discloses a realize through following technical scheme:

the utility model provides a gas cylinder pressure reducer for welding cutting, includes main part, valve spring, valve and ejector pin, the inner chamber bottom of main part is provided with valve spring, valve spring's top is provided with the valve, the top of valve is provided with the ejector pin, and the top of ejector pin stretches out the top of main part, be the contact connection between ejector pin and the valve, between valve and the spring.

Preferably, in the gas cylinder pressure reducer for welding and cutting, the main body includes an internal housing and an internal valve seat, and the internal housing is fitted to a bottom of the internal valve seat.

Preferably, in the above welding-cutting cylinder pressure reducer, the main body includes an outer end cap and an outer case fitted to a bottom of the outer end cap.

Preferably, in the gas cylinder pressure reducer for welding and cutting, a limiting groove is formed in the top of the valve, an insertion column matched with the limiting groove is arranged at the bottom of the ejector rod, and the ejector rod and the insertion column are of an integrated structure.

Preferably, in the gas cylinder pressure reducer for welding and cutting, the top of the valve is provided with a limiting column, the bottom of the ejector rod is provided with a mounting groove matched with the limiting column, and the limiting column and the valve are of an integrated structure.

Preferably, among the above-mentioned gas cylinder pressure reducer for welding cutting, the bottom of valve is provided with the spacing arch or the spacing concave yield with valve spring matched with, and spacing arch or spacing concave yield all with valve formula structure as an organic whole, the valve is formed by soft material preparation.

Preferably, in the gas cylinder pressure reducer for welding and cutting, the ejector rod is made of a square or hexagonal section.

Preferably, in the gas cylinder pressure reducer for welding and cutting, the top of the main body is provided with a guide gas outlet, and the section of the guide gas outlet is an circumscribed circle of the section of the ejector rod.

The utility model has the advantages that:

the utility model has the advantages of reasonable design, it is first: the top parts of the built-in valve seat and the built-out shell are both provided with guide air outlet holes, and the guide air outlet holes are long, have lead parts and are matched with the circumscribed circle of the ejector rod to slide;

secondly, the method comprises the following steps: the ejector rod is made of square, hexagonal and other sectional materials, the circumscribed circle of the ejector rod is matched with the guide air outlet hole, and the fan-shaped hollow groove is an air outlet channel, so that the contact area of the ejector rod and the valve is larger, and the limiting groove on the valve is matched with the plug-in column at the bottom of the ejector rod (or the limiting column at the top of the valve is matched with the mounting groove at the bottom of the ejector rod) to position the valve by the ejector rod, and further the valve is not required to be positioned through an excircle;

thirdly, the method comprises the following steps: the utility model provides a whole soft materials that is of valve has replaced the mode that the valve body and the sealed pad of valve separated in the past, has reduced the installation degree of difficulty and manufacturing cost.

To sum up, the utility model provides a technical scheme simple structure, easily assembly production, reduced manufacturing cost.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of a usage state structure of the present invention;

FIG. 2 is a second schematic view of the structure of the utility model in use;

FIG. 3 is a first schematic view of the connection structure of the valve and the ejector pin of the present invention;

FIG. 4 is a schematic view of the connection structure of the valve and the ejector pin of the present invention;

fig. 5 is a first schematic view of the valve structure of the present invention;

fig. 6 is a schematic view of the valve structure of the present invention;

fig. 7 is a top view of fig. 1 of the present invention;

fig. 8 is a top view of fig. 2 of the present invention;

FIG. 9 is a schematic view of the built-in valve seat of the present invention;

fig. 10 is a partial structural schematic view of the external casing of the present invention;

in the drawings, the components represented by the respective reference numerals are listed below:

1-main body, 101-built-in type shell, 102-built-in type valve seat, 103-built-in type end cover, 104-built-in type shell, 2-valve spring, 3-valve, 301-limit groove, 302-limit column, 4-ejector rod, 401-plug column and 402-mounting groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

The embodiment is a gas cylinder pressure reducer for welding and cutting, which comprises a main body 1, a valve spring 2, a valve 3 and a push rod 4, and referring to fig. 1, the main body 1 comprises an internal casing 101 and an internal valve seat 102, the internal casing 101 is sleeved at the bottom (namely, an internal model) of the internal valve seat 102, a guide vent hole is formed in the top of the internal valve seat 102, the push rod 4 extends out of the top of the internal valve seat 102 through the guide vent hole, the cross section of the push rod 4 is internally tangent to the cross section of an inner cavity of the guide vent hole, referring to fig. 2, the main body 1 comprises an external end cover 103 and an external casing 104, the external casing 104 is sleeved at the bottom (namely, an external model) of the external end cover 103, the top of the external casing 104 is provided with the guide vent hole, the push rod 4 extends out of the top of the external casing 104 through the guide vent hole, and the cross section of, the bottom of the inner cavity of the main body 1 is provided with a valve spring 2, the top of the valve spring 2 is provided with a valve 3, the bottom of the valve 3 is provided with a limit protrusion or a limit recess (a limit protrusion structure is shown in fig. 3 or fig. 4, a limit recess structure is shown in fig. 5 or fig. 6) matched with the valve spring 2, the limit protrusion or the limit recess is of an integral structure with the valve 3, the valve 3 is made of soft materials (such as rubber blocks), the ejector rod 4 is in contact connection with the valve 3 and the spring 2, the ejector rod 4 is made of square, hexagonal and other sectional materials, referring to fig. 3, the top of the valve 3 is provided with a limit groove 301, the bottom of the ejector rod 4 is provided with a plug-in column 401 matched with the limit groove 301, the ejector rod 4 and the plug-in column 401 are of an integral structure (i.e., the bottom of the top rod 4 is provided with a mounting groove 402 matched with the limiting column 302, and the limiting column 302 and the valve 3 are of an integrated structure (i.e. a lower limiting type matching structure).

The utility model relates to a concrete implementation, the utility model has reasonable structural design, the guide air outlet holes are arranged at the top parts of the built-in valve seat 102 and the external casing 104, the hole is long, the lead part is arranged, the limit guide function is carried out on the ejector rod 4, the ejector rod 4 is matched with the circumcircle of the ejector rod 4 to slide, the ejector rod 4 adopts the square, hexagonal and other section bars, the circumcircle of the ejector rod 4 is matched with the guide air outlet holes, the fan-shaped hollow groove is an air outlet channel (refer to figures 7, 8, 9 and 10), thus the contact area between the ejector rod 4 and the valve 3 is larger, and the valve 3 is not easy to collapse, the top part of the valve 3 is not provided with a center hole, and the limit groove 301 on the valve 3 is matched with the inserting column 401 at the bottom of the ejector rod 4 (or the limit column 302 at the top part of the valve 3 is matched with the mounting groove 402 at the bottom of, and then need not fix a position valve 3 through the excircle, to sum up, the utility model provides a technical scheme simple structure, easily assembly production, reduced manufacturing cost.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not exhaustive and do not limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a gas cylinder pressure reducer for welding cutting which characterized in that: including main part, valve spring, valve and ejector pin, the inner chamber bottom of main part is provided with valve spring, valve spring's top is provided with the valve, the top of valve is provided with the ejector pin, and the top of ejector pin stretches out the top of main part, be the contact connection between ejector pin and the valve, between valve and the spring.

2. The gas cylinder pressure reducer for welding and cutting as set forth in claim 1, wherein: the main body comprises an internal shell and an internal valve seat, and the internal shell is sleeved at the bottom of the internal valve seat.

3. The gas cylinder pressure reducer for welding and cutting as set forth in claim 1, wherein: the main body comprises an external end cover and an external shell, and the external shell is sleeved at the bottom of the external end cover.

4. The gas cylinder pressure reducer for welding and cutting as set forth in claim 1, wherein: the top of the valve is provided with a limiting groove, the bottom of the ejector rod is provided with an insertion column matched with the limiting groove, and the ejector rod and the insertion column are of an integrated structure.

5. The gas cylinder pressure reducer for welding and cutting as set forth in claim 1, wherein: the top of valve is provided with spacing post, the bottom of ejector pin is seted up with spacing post matched with mounting groove, and spacing post and valve formula structure as an organic whole.

6. The gas cylinder pressure reducer for welding and cutting as set forth in claim 1, wherein: the bottom of valve is provided with the spacing arch or the spacing concave yield with valve spring matched with, and spacing arch or spacing concave yield all with valve formula structure as an organic whole, the valve is formed by soft material preparation.

7. The gas cylinder pressure reducer for welding and cutting as set forth in claim 1, wherein: the ejector rod is made of square or hexagonal section bars.

8. The gas cylinder pressure reducer for welding and cutting as set forth in claim 1, wherein: the top of the main body is provided with a guide air outlet, and the section of the guide air outlet is an circumscribed circle of the section of the ejector rod.